1. A brake pedal test control apparatus, comprising:

the driving assembly (1) comprises a telescopic rod (11) and a fixed support (12), wherein the fixed support (12) is connected with one end of the telescopic rod (11), the fixed support (12) is used for being fixedly connected with a seat of a vehicle, and the other end of the telescopic rod (11) is used for being fixedly connected with a brake pedal of the vehicle;

a control assembly (2) comprising an electronic control unit (21) and a brake line pressure sensor (22), said brake line pressure sensor (22) being adapted to be mounted on a brake line of said vehicle to detect an oil pressure in said brake line, said electronic control unit (21) being electrically connected to said brake line pressure sensor (22) and said telescopic rod (11), said electronic control unit (21) being configured to be capable of driving said telescopic rod (11) to extend and retract in accordance with said oil pressure.

2. The brake pedal test control device according to claim 1, wherein the telescopic rod (11) is an air pressure telescopic rod, one end of the telescopic rod (11) is provided with an air inlet (11a), an air inlet valve (111) is arranged at the air inlet (11a), the other end of the telescopic rod (11) is provided with an air outlet (11b), a pressure relief valve (112) is arranged at the air outlet (11b), and the air inlet valve (111) and the pressure relief valve (112) are both electrically connected with the electronic control unit (21).

3. The brake pedal test control apparatus according to claim 2, further comprising a pressure regulating valve (113), an inlet of the pressure regulating valve (113) communicating with an outlet of the intake valve (111), an outlet of the pressure regulating valve (113) communicating with the intake port (11 a).

4. The brake pedal test control device according to any one of claims 1 to 3, wherein the fixing bracket (12) includes a cushion plate (121), a back plate (122) and a cushion thickness adjusting mechanism (123), the cushion plate (121) is configured to be connected with a seat cushion of the vehicle, the back plate (122) is configured to be connected with a seat back of the vehicle, the cushion thickness adjusting mechanism (123) includes a first connecting plate (1231) and a second connecting plate (1232), one side plate surface of the first connecting plate (1231) is connected with one end of the telescopic rod (11), the other side plate surface of the first connecting plate (1231) is attached with one side plate surface of the second connecting plate (1232), one end of the first connecting plate (1231) is connected with one end of the cushion plate (121), one end of the second connecting plate (1232) has a clamping plate (1233), the clamping plate (1233) is vertically connected with the other side plate surface of the second connecting plate (1232), the backrest plate (122) is connected with the other end of the cushion plate (121), the first connecting plate (1231) is provided with a first strip-shaped mounting hole (1234), the first strip-shaped mounting hole (1234) is perpendicular to the clamping plate (1233), the second connecting plate (1232) is provided with a plurality of first bolt holes (1235) matched with the first strip-shaped mounting hole (1234), and the first bolt holes (1235) are arranged at intervals in the direction perpendicular to the clamping plate (1233).

5. The brake pedal test control device according to claim 4, further comprising a cushion angle adjusting mechanism (124), the other end of the second connecting plate (1232) being rotatably connected with one end of the cushion plate (121) through the cushion angle adjusting mechanism (124), the cushion angle adjusting mechanism (124) being configured to be able to rotate the cushion plate (121) relative to the second connecting plate (1232) about an axis parallel to the second connecting plate (1232) and the clamping plate (1233).

6. The brake pedal test control device according to claim 4, wherein the cushion plate (121) includes a third connecting plate (1211) and a fourth connecting plate (1212), one end of the third connecting plate (1211) is connected to the other end of the second connecting plate (1232), the fourth connecting plate (1212) is attached to the third connecting plate (1211), the fourth connecting plate (1212) is connected to the back plate (122), the fourth connecting plate (1212) has a second strip-shaped mounting hole (1213), the second strip-shaped mounting hole (1213) is parallel to the telescopic rod (11), the third connecting plate (1211) has a plurality of second bolt holes (1214) matched to the second strip-shaped mounting hole (1213), and the plurality of second bolt holes (1214) are spaced apart along the length direction of the telescopic rod (11).

7. The brake pedal test control device according to claim 4, further comprising a backrest angle adjusting mechanism (125), the backrest plate (122) being rotatably connected to the other end of the seat plate (121) by the backrest angle adjusting mechanism (125), the backrest angle adjusting mechanism (125) being configured to enable the backrest plate (122) to rotate relative to the seat plate (121) about an axis parallel to the second connecting plate (1232) and the clamping plate (1233).

8. The brake pedal test control device according to any one of claims 1 to 3, further comprising a pedal connecting bracket (3), wherein the pedal connecting bracket (3) is connected to the other end of the telescopic rod (11), the pedal connecting bracket (3) comprises two clamping plates (31) which are arranged in parallel and spaced, and the two clamping plates (31) are both parallel to the telescopic rod (11).

9. The brake pedal test control device according to claim 8, wherein the end of the clamping plate (31) facing away from the end of the telescopic rod (11) is provided with a plurality of concave holes (311), and the plurality of concave holes (311) are different in size and depth.

10. A control method that is implemented using the brake pedal test control apparatus according to any one of claims 1 to 9, the control method comprising:

outputting a first control instruction, wherein the first control instruction is used for instructing the telescopic rod (11) to be driven to extend so as to press the brake pedal;

obtaining an oil pressure in the brake line of the vehicle;

when the oil pressure in the brake pipeline is larger than a set value, outputting a second control instruction, wherein the second control instruction is used for indicating to drive the telescopic rod (11) to shorten until the oil pressure in the brake pipeline is reduced to the set value; alternatively, the first and second electrodes may be,

and when the oil pressure in the brake pipeline is smaller than the set value, outputting a third control instruction, wherein the third control instruction is used for indicating and driving the telescopic rod (11) to extend until the oil pressure in the brake pipeline is increased to the set value.

Background

The K & C characteristics of the vehicle, i.e., the kinematics and the elastokinematics. The kinematics mainly describe the change law of wheel alignment parameters caused by suspension motion, and the characteristics are related to the geometric parameters of a vehicle suspension guide mechanism. In the process of advancing of the automobile, the same-direction wheel jump working condition of wheels or the reverse wheel jump working condition of the automobile during turning can occur when the automobile meets a rough road, and the characteristic shown when the wheels jump up and down under the working conditions is the kinematics characteristic. The elastic kinematics mainly describes the change law of wheel alignment parameters caused by force and moment between a tire and a road surface, and is mainly related to elastic elements and elastic characteristics of a vehicle suspension. Unlike kinematics, elastokinematics refers to the change in suspension parameters when a force or moment is applied to the tire at a fixed wheel hop. When the K & C characteristics of the vehicle are subjected to simulation tests, the vehicle needs to be frequently braked and braked to simulate different working conditions.

In the related art, in performing a K & C characteristic simulation test of a vehicle, it is common that the brake pedal is continuously depressed and released inside the vehicle by a test driver.

Because the K & C characteristic simulation test of vehicle needs long-time to exert braking force to the vehicle, after long-time test, experimental navigating mate exists because of the tired condition that can't carry out the experiment in succession, and the braking force that needs to exert in the experiment is different simultaneously, and navigating mate also appears because of experience is not enough or misoperation leads to the deviation to the process of trampling of brake pedal appearing easily, leads to the test cycle long, and the degree of accuracy is low.

Disclosure of Invention

The embodiment of the invention provides a brake pedal test control device and a control method, which can continuously and accurately control the stroke of a brake pedal according to different test working condition requirements, shorten the test period of a K & C characteristic simulation test of a vehicle and improve the test accuracy. The technical scheme is as follows:

in a first aspect, an embodiment of the present invention provides a brake pedal test control device, including:

the driving assembly comprises a telescopic rod and a fixed support, the fixed support is connected with one end of the telescopic rod, the fixed support is used for being fixedly connected with a seat of a vehicle, and the other end of the telescopic rod is used for being fixedly connected with a brake pedal of the vehicle;

a control assembly including an electronic control unit and a brake line pressure sensor, the brake line pressure sensor being for installing on the brake line of vehicle to detect the oil pressure in the brake line, the electronic control unit with the brake line pressure sensor with the telescopic link electricity is connected, the electronic control unit is configured to be able to be according to the oil pressure drive the telescopic link is flexible.

Optionally, the telescopic link is a pneumatic telescopic link, one end of the telescopic link is provided with an air inlet, the air inlet is provided with an air inlet valve, the other end of the telescopic link is provided with an air outlet, the air outlet is provided with a pressure release valve, and the air inlet valve and the pressure release valve are electrically connected with the electronic control unit.

Optionally, the brake pedal test control device further comprises a pressure regulating valve, an inlet of the pressure regulating valve is communicated with an outlet of the air inlet valve, and an outlet of the pressure regulating valve is communicated with the air inlet.

Optionally, the fixed bracket comprises a cushion plate, a backrest plate and a cushion thickness adjusting mechanism, the cushion plate is used for being connected with a seat cushion of the vehicle, the backrest plate is used for being connected with a seat backrest of the vehicle, the cushion thickness adjusting mechanism comprises a first connecting plate and a second connecting plate, one side plate surface of the first connecting plate is connected with one end of the telescopic rod, the other side plate surface of the first connecting plate is attached to one side plate surface of the second connecting plate, one end of the first connecting plate is connected with one end of the cushion plate, one end of the second connecting plate is provided with a clamping plate, the clamping plate is vertically connected with the other side plate surface of the second connecting plate, the backrest plate is connected with the other end of the cushion plate, the first connecting plate is provided with a first strip-shaped mounting hole, and the first strip-shaped mounting hole is vertical to the clamping plate, the second connecting plate has a plurality of first bolt holes matched with the first bar-shaped mounting holes, and the plurality of first bolt holes are arranged at intervals in a direction perpendicular to the clamping plate.

Optionally, the brake pedal test control device further includes a cushion angle adjusting mechanism, the other end of the second connecting plate is rotatably connected with one end of the cushion plate through the cushion angle adjusting mechanism, and the cushion angle adjusting mechanism is configured to enable the cushion plate to rotate relative to the second connecting plate around an axis parallel to the second connecting plate and the clamping plate.

Optionally, the cushion plate includes a third connecting plate and a fourth connecting plate, one end of the third connecting plate is connected to the other end of the second connecting plate, the fourth connecting plate is attached to the third connecting plate, the fourth connecting plate is connected to the back plate, the fourth connecting plate has a second strip-shaped mounting hole, the second strip-shaped mounting hole is parallel to the telescopic rod, the third connecting plate has a plurality of second bolt holes matched with the second strip-shaped mounting hole, and the second bolt holes are arranged along the length direction of the telescopic rod at intervals.

Optionally, the brake pedal test control device further comprises a backrest angle adjusting mechanism, the backrest plate is rotatably connected with the other end of the seat cushion plate through the backrest angle adjusting mechanism, and the backrest angle adjusting mechanism is configured to enable the backrest plate to rotate relative to the seat cushion plate around an axis parallel to the second connecting plate and the clamping plate.

Optionally, the brake pedal test control device further comprises a pedal connecting support, the pedal connecting support is connected to the other end of the telescopic rod, the pedal connecting support comprises two clamping plates which are arranged in parallel at intervals, and the two clamping plates are parallel to the telescopic rod.

Optionally, the cardboard dorsad the tip of telescopic link one end has a plurality of shrinkage pools, the size and the degree of depth of a plurality of shrinkage pools are all inequality.

In a second aspect, the present invention provides a control method implemented by the brake pedal test control device according to the first aspect, including the steps of:

outputting a first control instruction, wherein the first control instruction is used for instructing the telescopic rod to be driven to extend so as to pressurize the brake pedal;

obtaining an oil pressure in the brake line of the vehicle;

when the oil pressure in the brake pipeline is larger than a set value, outputting a second control instruction, wherein the second control instruction is used for indicating to drive the telescopic rod to be shortened until the oil pressure in the brake pipeline is reduced to the set value; alternatively, the first and second electrodes may be,

and when the oil pressure in the brake pipeline is smaller than the set value, outputting a third control instruction, wherein the third control instruction is used for indicating and driving the telescopic rod to extend until the oil pressure in the brake pipeline is increased to the set value.

The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:

the installation of the brake pedal test control device is completed by fixedly connecting the fixing support connected with one end of the telescopic rod with the seat of the vehicle and fixedly connecting the other end of the telescopic rod with the brake pedal of the vehicle. When a K & C characteristic simulation test of the vehicle is carried out, when the vehicle is in a working condition that braking needs to be applied to the vehicle, the electronic control unit sends a control command to the telescopic rod to drive the telescopic rod to extend so as to press the brake pedal, so that a driver is simulated to tread the brake pedal, and braking force is applied to the vehicle; when the vehicle is in a working condition that the brake of the vehicle needs to be released, the electronic control unit can also send a control command to the telescopic rod to drive the telescopic rod to be shortened so as to release the pressing of the brake pedal, so that the brake pedal releasing of a driver is simulated. The electronic control unit is used for carrying out remote continuous control on the telescopic rod, and a driver does not need to be matched with the test in the vehicle.

By installing a brake line pressure sensor on a brake line of a vehicle, the brake line pressure sensor can be used for detecting the oil pressure for driving a vehicle brake device, such as a brake caliper, and transmitting an oil pressure value signal to an electronic control unit in real time. Under different working conditions, oil pressure set values required by the vehicle braking device are different, when the electronic control unit detects that the received oil pressure is greater than the set values, the fact that the telescopic rod extends and presses the brake pedal is too long is indicated, and at the moment, a control command can be sent to the telescopic rod to drive the telescopic rod to shorten, so that the oil pressure in a braking pipeline is reduced to the set values; when the electronic control unit detects that the received oil pressure is smaller than the set value, the fact that the stroke of extending the telescopic rod and pressing the brake pedal is too short is indicated, and at the moment, a control command can be sent to the telescopic rod to drive the telescopic rod to extend, so that the oil pressure in the brake pipeline is increased to the set value. The stroke of the brake pedal can be continuously and accurately controlled according to different test working condition requirements, the test period of the K & C characteristic simulation test of the vehicle is shortened, and the test accuracy is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a brake pedal test control device provided by an embodiment of the invention;

FIG. 2 is a partial schematic structural view of a brake pedal test control device provided in an embodiment of the present invention;

FIG. 3 is a sectional view of a brake pedal test control apparatus according to an embodiment of the present invention;

FIG. 4 is a block diagram of a control system of a brake pedal test control device according to an embodiment of the present invention;

fig. 5 is a flowchart of a control method according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the related art, in performing a K & C characteristic simulation test of a vehicle, it is common that the brake pedal is continuously depressed and released inside the vehicle by a test driver.

Because the K & C characteristic simulation test of vehicle needs long-time to exert braking force to the vehicle, after long-time test, experimental navigating mate exists because of the tired condition that can't carry out the experiment in succession, and the braking force that needs to exert in the experiment is different simultaneously, and navigating mate also appears because of experience is not enough or misoperation leads to the deviation to the process of trampling of brake pedal appearing easily, leads to the test cycle long, and the degree of accuracy is low.

Fig. 1 is a schematic structural diagram of a brake pedal test control device according to an embodiment of the present invention. Fig. 2 is a partial structural schematic diagram of a brake pedal test control device according to an embodiment of the invention. Fig. 3 is a structural sectional view of a brake pedal test control device according to an embodiment of the present invention. Fig. 4 is a block diagram of a control system of a brake pedal test control device according to an embodiment of the present invention. As shown in fig. 1 to 4, by practice, the present applicant has provided a brake pedal test control apparatus including a drive assembly 1 and a control assembly 2.

Wherein, drive assembly 1 includes telescopic link 11 and fixed bolster 12. The fixed support 12 is connected with one end of the telescopic rod 11, the fixed support 12 is used for being fixedly connected with a seat of a vehicle, and the other end of the telescopic rod 11 is used for being fixedly connected with a brake pedal of the vehicle. The control assembly 2 includes an electronic control unit 21 and a brake line pressure sensor 22. The brake-line pressure sensor 22 is intended to be mounted on a brake line of a vehicle to detect the oil pressure in the brake line. The electronic control unit 21 is electrically connected to the brake line pressure sensor 22 and the telescopic rod 11, and the electronic control unit 21 is configured to be capable of driving the telescopic rod 11 to expand and contract according to oil pressure.

In the embodiment of the invention, before the K & C characteristic simulation test of the vehicle is required, the brake pedal test control device is firstly placed between the brake pedal and the seat in the cab of the vehicle. The installation of the brake pedal test control device is completed by fixedly connecting the fixing bracket 12 connected with one end of the telescopic rod 11 with the seat of the vehicle and fixedly connecting the other end of the telescopic rod 11 with the brake pedal of the vehicle. When a K & C characteristic simulation test of the vehicle is carried out, when the vehicle is in a working condition that braking needs to be applied to the vehicle, the electronic control unit 21 sends a control command to the telescopic rod 11 to drive the telescopic rod 11 to extend so as to press the brake pedal, so that a driver is simulated to step on the brake pedal to apply braking force to the vehicle; when the vehicle is in a working condition that the brake needs to be released, the electronic control unit 21 can also send a control command to the telescopic rod 11 to drive the telescopic rod 11 to shorten so as to release the pressing of the brake pedal, so that the driver is simulated to release the brake pedal. The electronic control unit 21 is used for carrying out remote continuous control on the telescopic rod 11, and a driver does not need to carry out a fitting test in the vehicle.

By installing the brake line pressure sensor 22 on the brake line of the vehicle, the brake line pressure sensor 22 can be used to detect the oil pressure for driving the vehicle brake device, such as a brake caliper, and transmit the oil pressure value signal to the electronic control unit 21 in real time. Under different working conditions, oil pressure set values required by the vehicle braking device are different, when the electronic control unit 21 detects that the received oil pressure is greater than the set value, the received oil pressure is longer than the set value, which indicates that the telescopic rod 11 is extended and the stroke of pressing the brake pedal is too long, at this moment, a control command can be sent to the telescopic rod 11 to drive the telescopic rod 11 to be shortened, so that the oil pressure in a braking pipeline is reduced to the set value; when the electronic control unit 21 detects that the received oil pressure is smaller than the set value, it indicates that the stroke of extending the telescopic rod 11 and pressing the brake pedal is too short, and at this time, a control command is sent to the telescopic rod 11 to drive the telescopic rod 11 to extend, so that the oil pressure in the brake pipeline is increased to the set value. The stroke of the brake pedal can be continuously and accurately controlled according to different test working condition requirements, the test period of the K & C characteristic simulation test of the vehicle is shortened, and the test accuracy is improved.

For example, in the embodiment of the present invention, the electronic control unit 21 may be disposed in a console dedicated to the K & C characteristic simulation test, and electrically connected to the telescopic rod 11 and the brake line pressure sensor 22 through a cable, a signal transmission wire, and the like, so as to transmit a detection signal and a control model. In other possible implementation manners, the electronic control unit 21 may also be connected to the telescopic rod 11 and the brake line pressure sensor 22 through communication, for example, the electronic control unit 21 may be integrated into a computer program or control software of a mobile terminal such as a mobile phone, and signal transmitting and receiving devices are disposed on the telescopic rod 11 and the brake line pressure sensor 22 to realize remote signal transmitting and receiving to the telescopic rod 11 and the brake line pressure sensor 22 and control driving, and the present invention does not limit the setting position and setting type of the electronic control unit 21.

Optionally, the telescopic rod 11 is an air pressure telescopic rod, one end of the telescopic rod 11 has an air inlet 11a, an air inlet valve 111 is disposed at the air inlet 11a, the other end of the telescopic rod 11 has an air outlet 11b, a pressure relief valve 112 is disposed at the air outlet 11b, and the air inlet valve 111 and the pressure relief valve 112 are both electrically connected to the electronic control unit 21. Illustratively, in the embodiment of the present invention, the telescopic rod 11 is an air pressure telescopic rod, that is, an air cylinder, and the air inlet valve 111 and the pressure relief valve 112 are both electrically controlled valves, and can be turned on and off by receiving a control signal sent by the electronic control unit 21. The air inlet 11a of the telescopic rod 11 is connected to an air compressor for supplying compressed air through an air inlet valve 111. When a K & C characteristic simulation test of the vehicle is started, the air inlet valve 111 receives a control instruction of the electronic control unit 21 and is turned on, compressed air of the air compressor enters a piston cylinder of the telescopic rod 11 through the air inlet 11a and then generates pressure to push the piston rod to extend, so that the telescopic rod 11 extends to apply pressure to a brake pedal of the vehicle to brake the vehicle; when the vehicle is not required to be braked, the electronic control unit 21 can drive the air inlet valve 111 to be closed, drive the pressure relief valve 112 to be communicated and release the pressure in the piston cylinder of the telescopic rod 11, so that the telescopic rod 11 is shortened, and the brake pedal is slowly returned to release the brake of the vehicle. The pneumatic telescopic rod is adopted to drive the brake pedal of the vehicle, the operation is kept away, the structure is simple, the maintenance is convenient, the requirement on test workers is not high, and the practicability of the brake pedal test control device is improved.

Illustratively, in the embodiment of the present invention, in order to ensure that the telescopic rod 11 can be retracted to the position after the telescopic rod stops supplying air and releases the pressure in the piston cylinder of the telescopic rod 11 through the pressure relief valve 112. A return spring can also be arranged at one end of the piston cylinder of the telescopic rod, which is close to the air outlet 11b, namely between the extending end of the piston rod and the piston. When compressed air enters the piston cylinder of the telescopic rod 11 through the air inlet 11a and then generates pressure to push the piston, the return spring can be compressed under the pushing of the piston, and after air supply is stopped and the pressure in the piston cylinder is released, the return spring can be reset under the action of elastic force and drives the piston rod to retract together, so that the telescopic rod 11 can be integrally retracted to a position.

It should be noted that, as shown in fig. 1, the installation position of the intake valve 111 in fig. 1 is merely an example, and the intake valve 111 is connected to the intake port 11a through an intake pipe (not shown), and the specific installation position of the intake valve 111 is not limited in the present invention.

Optionally, the brake pedal test control apparatus further includes a pressure regulating valve 113, an inlet of the pressure regulating valve 113 being in communication with an outlet of the intake valve 111, and an outlet of the pressure regulating valve 113 being in communication with the intake port 11 a. Illustratively, in the embodiment of the invention, the pressure regulating valve 113 is arranged between the air inlet valve 111 and the air inlet 11a of the telescopic rod 11, the opening degree of the opening and closing piece in the valve body of the pressure regulating valve 113 is controlled to regulate the pressure of the air entering the air inlet 11a, the pressure of the compressed air introduced through the air inlet valve 111 is reduced, the pressure after the valve is kept within a certain range, the pressure of the air entering the piston cylinder of the telescopic rod 11 is ensured to be stable, the telescopic rod 11 is prevented from being damaged due to the excessive pressure of the entering air, and the stability of the K & C characteristic simulation test of the vehicle and the service life of the brake pedal test control device are improved. Meanwhile, for different vehicle types requiring different braking force requirements, different braking forces can be accurately provided by adjusting the opening degree of the pressure regulating valve 113.

Optionally, the fixing bracket 12 includes a cushion plate 121, a backrest plate 122 and a cushion thickness adjusting mechanism 123, the cushion plate 121 is configured to be connected to a seat cushion of a vehicle, the backrest plate 122 is configured to be connected to a seat backrest of the vehicle, the cushion thickness adjusting mechanism 123 includes a first connecting plate 1231 and a second connecting plate 1232, a side plate surface of the first connecting plate 1231 is connected to one end of the telescopic rod 11, another side plate surface of the first connecting plate 1231 is attached to a side plate surface of the second connecting plate 1232, and one end of the first connecting plate 1231 is connected to one end of the cushion plate 121. One end of the second connecting plate 1232 has a clamping plate 1233, the clamping plate 1233 is vertically connected to the other side plate surface of the second connecting plate 1232, the backrest plate 122 is connected to the other end of the cushion plate 121, the first connecting plate 1231 has a first bar-shaped mounting hole 1234, the first bar-shaped mounting hole 1234 is vertical to the clamping plate 1233, the second connecting plate 1232 has a plurality of first bolt holes 1235 matched with the first bar-shaped mounting hole 1234, and the plurality of first bolt holes 1235 are arranged at intervals along the direction vertical to the clamping plate 1233. For example, in the embodiment of the present invention, when fixedly connected to the seat of the vehicle through the fixing bracket 12, the clamping plate 1233 is first inserted under the seat cushion of the vehicle, and the second connecting plate 1232 is attached to the seat cushion. Then, the relative positions of the first connecting plate 1231 and the second connecting plate 1232 are adjusted along the direction perpendicular to the clamping plate 1233, so that the cushion plate 121 is attached to the seat cushion, and then the first strip-shaped mounting holes 1234 and the corresponding first bolt holes 1235 are used to bolt the first connecting plate 1231 and the second connecting plate 1232, so that the fixing bracket 12 clamps the seat cushion in the direction perpendicular to the clamping plate 1233, that is, in the vertical direction. Finally, the backrest plate 122 is tightly attached to the seat back of the vehicle and is fixedly connected with the seat back, so that the fixed bracket 12 is fixedly connected with the seat of the vehicle. Through setting up cushion thickness adjustment mechanism 123, can make fixed bolster 12 can carry out the correspondence adjustment according to the seat cushion of different thickness, realize corresponding being connected with not unidimensional seat, improved brake pedal test control device's practicality.

Optionally, the brake pedal test control apparatus further includes a cushion angle adjusting mechanism 124, the other end of the second connecting plate 1232 is rotatably connected with one end of the cushion plate 121 through the cushion angle adjusting mechanism 124, and the cushion angle adjusting mechanism 124 is configured to enable the cushion plate 121 to rotate relative to the second connecting plate 1232 around an axis parallel to the second connecting plate 1232 and the clamping plate 1233. For example, the front end of the seat cushion of the vehicle often has a certain radian and an inclined chamfer, and if the cushion plate 121 is rigidly connected with the second connecting plate 1232, the seat cushion often cannot be flatly attached to the seat cushion sufficiently, so that the clamping is unstable and the seat cushion is easy to loosen. In the embodiment of the invention, the cushion angle adjusting mechanism 124 is arranged between the second connecting plate 1232 and the cushion plate 121, so that a worker can adjust the relative angle between the cushion plate 121 and the second connecting plate 1232, the cushion plate 121 can be pressed on the seat cushion, and the applicability and the installation stability of the brake pedal test control device are improved.

Illustratively, in the embodiment of the present invention, the side of the cushion plate 121 adjacent to the second connecting plate 1232 is provided with a first connecting portion 124a in a protruding manner, the side of the second connecting plate 1232 adjacent to the cushion plate 121 is provided with a second connecting portion 124b in a protruding manner, and the first connecting portion 124a and the second connecting portion 124b are both provided with a first arc-shaped bolt connecting groove m1 in a protruding manner, after the relative angle between the cushion plate 121 and the second connecting plate 1232 is adjusted, the first connecting portion 124a and the second connecting portion 124b are bolted through the first arc-shaped bolt connecting groove m1, so as to complete the adjustment and fixation of the cushion angle adjusting mechanism 124, and ensure that the cushion plate 121 can be tightly pressed against the seat cushion, and the structure is simple and convenient to adjust.

Optionally, the cushion plate 121 includes a third connecting plate 1211 and a fourth connecting plate 1212, one end of the third connecting plate 1211 is connected to the other end of the second connecting plate 1232, the fourth connecting plate 1212 is attached to the third connecting plate 1211, the fourth connecting plate 1212 is connected to the backrest plate 122, the fourth connecting plate 1212 has a second strip-shaped mounting hole 1213, the second strip-shaped mounting hole 1213 is parallel to the telescopic rod 11, the third connecting plate 1211 has a plurality of second bolt holes 1214 matching with the second strip-shaped mounting hole 1213, and the plurality of second bolt holes 1214 are spaced along the length direction of the telescopic rod 11. For example, there may be differences in seat cushion length for different models of vehicles. In the embodiment of the present invention, after the seat cushion pad 121 clamps the seat cushion, the relative positions of the third connecting plate 1211 and the fourth connecting plate 1212 are adjusted along the length direction of the telescopic rod 11, so that the overall length of the seat cushion pad 121 can be increased, the fourth connecting plate 1212 can abut against the seat back, the corresponding backrest plate 122 can be more sufficiently attached to the seat back, and the applicability and the installation stability of the brake pedal test control device are further improved.

Optionally, the brake pedal test control apparatus further includes a backrest angle adjusting mechanism 125, the backrest plate 122 is rotatably connected to the other end of the cushion plate 121 through the backrest angle adjusting mechanism 125, and the backrest angle adjusting mechanism 125 is configured to be able to rotate the backrest plate 122 relative to the cushion plate 121 about an axis parallel to the second connecting plate 1232 and the clamp plate 1233. For example, in a vehicle seat, the relative angle between the seat back and the seat cushion varies according to the size of the vehicle seat, and if the back plate 122 is rigidly connected to the cushion plate 121, the seat back may not be sufficiently attached to the seat back, which may cause the connection of the fixing bracket 12 to be unstable. In the embodiment of the invention, by arranging the backrest angle adjusting mechanism 125 between the backrest plate 122 and the seat cushion plate 121, a worker can adjust the relative angle between the seat cushion plate 121 and the backrest plate 122, so that the backrest plate 122 can be tightly attached to the seat backrest, and the applicability and the installation stability of the brake pedal test control device are further improved.

Illustratively, in the embodiment of the present invention, a third connecting portion 125a is convexly disposed at a side of the cushion plate 121 adjacent to the back plate 122, a fourth connecting portion 125b is convexly disposed at a side of the back plate 122 adjacent to the cushion plate 121, and a second arc-shaped bolt connecting slot m2 is disposed at each of the third connecting portion 125a and the fourth connecting portion 125 b. After the relative angle between the cushion plate 121 and the back plate 122 is adjusted, the third connecting portion 125a and the fourth connecting portion 125b are bolted through the second arc-shaped bolt connecting groove m2, so that the adjustment and fixation of the back angle adjusting mechanism 125 are completed, the back plate 122 can be tightly attached to the seat back, the structure is simple, and the adjustment is convenient.

Optionally, brake pedal test control device still includes footboard linking bridge 3, and footboard linking bridge 3 is connected with the other end of telescopic link 11, and footboard linking bridge 3 includes two cardboard 31 of parallel interval arrangement, and two cardboard 31 all are parallel with telescopic link 11. Illustratively, in the embodiment of the invention, when the other end of the telescopic rod 11 is connected with a brake pedal of a vehicle, the two clamping plates 31 on the pedal connecting bracket 3 can be respectively clamped at the two ends of the brake pedal, and the brake pedal is clamped and fixed by the two clamping plates 31, so that stable connection is ensured in the process of pushing and loosening the brake pedal by using the telescopic rod 11, and the installation stability of the brake pedal test control device is further improved.

Optionally, the end of the clamping plate 31, which is opposite to the end of the telescopic rod 11, has a plurality of concave holes 311, and the size and the depth of the plurality of concave holes 311 are different. Exemplarily, in the embodiment of the present invention, by providing the recessed holes 311 with different sizes and depths at the end portions of the two clamping plates 31, when the brake pedal is clamped by the two clamping plates 31, the recessed holes 311 can be in fit and snap-fit engagement with a flange structure on the brake pedal for increasing friction force, so as to increase clamping stability and further improve installation stability of the brake pedal test control device.

Illustratively, in the embodiment of the present invention, one end of the telescopic rod 11 may be rotatably connected to the fixed bracket 12, such that the telescopic rod 11 may rotate relative to the fixed bracket about an axis parallel to the second connecting plate 1232 and the clamping plate 1233. Thereby adjust the relative angle between two cardboard 31 and the brake pedal, make footboard linking bridge 3 can be more convenient with be the brake pedal stable connection of different gestures, prevent brake pedal and 3 pine of footboard linking bridge from taking off by bulldozing and lax in-process, further improved brake pedal test control device's installation stability.

For example, in addition to detecting the oil pressure for driving the vehicle brake device by using the brake line pressure sensor 22, the brake pedal test control device may further include a brake pressure sensor 23 disposed on a brake cylinder of the vehicle, that is, a vacuum booster connected to the brake pedal, for detecting the air pressure in the vacuum booster, and feeding back the detected air pressure signal to the electronic control unit 21. The staff can observe the air pressure value through a display panel of a special control console, a computer program or a mobile terminal such as a mobile phone. Vacuum booster utilizes the negative pressure to increase the part that the driver applyed the power on the footboard, and its inside atmospheric pressure numerical value has also indirectly reflected the pressurized stroke size of brake pedal, through monitoring this atmospheric pressure numerical value, whether the staff can be more comprehensive to the pressurized stroke size of brake pedal with the oil pressure phase-match in the brake piping that provides rather than carry out the analysis to grasp telescopic link 11 and whole brake pedal test control device's operational aspect, it is experimental to improve the accuracy.

Illustratively, in the embodiment of the present invention, an emergency stop switch 24 may be further provided, the emergency stop switch 24 may be electrically connected to the electronic control unit 21, and a worker may manually turn on and off the emergency stop switch 24 to cut off the signal transceiving and control of the electronic control unit 21 to the control assembly 2, so as to implement emergency stop and shutdown of the entire control assembly 2, and facilitate the worker to temporarily repair and maintain the brake pedal test control device.

Fig. 5 is a flowchart of a control method according to an embodiment of the present invention. As shown in fig. 4, an embodiment of the present invention further provides a control method, where the control method is implemented by using the brake pedal test control apparatus shown in fig. 1 to 4, and the control method includes:

and S51, outputting a first control instruction, wherein the first control instruction is used for instructing the telescopic rod 11 to extend so as to press the brake pedal.

In this step, when the vehicle is in a working condition that the brake needs to be applied to the vehicle, the electronic control unit 21 sends a first control command to the telescopic rod 11 to drive the telescopic rod 11 to extend so as to press the brake pedal, so as to simulate the driver stepping on the brake pedal to apply the brake force to the vehicle.

And S52, acquiring the oil pressure in the brake pipeline of the vehicle.

In this step, by installing the brake line pressure sensor 22 on the brake line of the vehicle, the brake line pressure sensor 22 can be used to detect the oil pressure for driving the vehicle brake device, such as a brake caliper, and transmit an oil pressure value signal to the electronic control unit 21 in real time.

S53, when the oil pressure in the brake pipeline is larger than the set value, outputting a second control instruction, wherein the second control instruction is used for indicating the telescopic rod 11 to be driven to shorten until the oil pressure in the brake pipeline is reduced to the set value; alternatively, the first and second electrodes may be,

and when the oil pressure in the brake pipeline is smaller than the set value, outputting a third control instruction, wherein the third control instruction is used for indicating the extension of the driving telescopic rod 11 until the oil pressure in the brake pipeline is increased to the set value.

In this step, under different working conditions, the oil pressure set values required by the vehicle braking device are also different, and when the electronic control unit 21 detects that the received oil pressure is greater than the set value, it indicates that the telescopic rod 11 is extended and the stroke of pressing the brake pedal is too long, and at this time, a second control command can be sent to the telescopic rod 11 to drive the telescopic rod 11 to be shortened, so that the oil pressure in the brake pipeline is reduced to the set value; when the electronic control unit 21 detects that the received oil pressure is smaller than the set value, it indicates that the stroke of extending the telescopic rod 11 and pressing the brake pedal is too short, and at this time, a third control command is sent to the telescopic rod 11 to drive the telescopic rod 11 to extend, so that the oil pressure in the brake pipeline is increased to the set value.

The control method can realize that the situation that the same test requires different braking force requirements under different working conditions can be set through software linkage according to different test working condition requirements, and the situation can be automatically judged by the electronic control unit 21, so that the lifting of different braking forces can be accurately realized. Meanwhile, for the same test, the situation that whether the braking force is needed under different working conditions or not can be set through software linkage, and the electronic control unit 21 is used for automatically judging, so that the braking force is accurately applied or not applied, and the test errors and the safety risks caused by the application or not of the braking force are avoided. The stroke of the brake pedal is continuously and accurately controlled, the test period of the K & C characteristic simulation test of the vehicle is shortened, and the test accuracy is improved.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, which may also change accordingly when the absolute position of the object being described changes.

The invention is not to be considered as limited to the particular embodiments shown and described, but is to be understood that various modifications, equivalents, improvements and the like can be made without departing from the spirit and scope of the invention.