1. An intelligent safety early warning device for an expressway road and a safety management system thereof comprise a road surface end (100) which is paved on a detection road surface of the expressway and used for monitoring the position of a vehicle, wherein the road surface end (100) comprises an infrared transmitting circuit (101) and an infrared receiving circuit (102); an optical-electrical path is formed between the infrared transmitting circuit (101) and the infrared circuit through an infrared transmitting end and an infrared receiving end, the infrared transmitting circuit (101) and the infrared receiving circuit (102) form an infrared coverage area covering a monitoring area of the pavement end (100), and when a vehicle wheel enters the monitoring area, at least part of infrared rays are blocked and a signal that the vehicle enters the monitoring area is generated; the pavement end (100) further comprises a monitoring unit (103), and when a signal that the vehicle enters a monitoring area is generated, the monitoring unit (103) monitors the vehicle; the pavement end (100) further comprises radio frequency circuitry including a transmitting antenna (104) attached to some or all of the location of the monitoring area; the corresponding vehicle-mounted end (200) comprises a radio frequency receiving circuit (201) coupled with the radio frequency transmitting circuit, when a vehicle enters the monitoring area, the radio frequency receiving circuit (201) is excited and generates a corresponding electric signal, and when the electric signal occurs, the vehicle-mounted end (200) sends an alarm signal to remind people in the vehicle.

2. The safety precaution device of claim 1, characterized in that the pavement end (100) comprises an emission band (105) of a belt-like structure for enclosing the infrared emission circuit (101), the infrared emission end and the infrared receiving end of the infrared receiving circuit (102), the emission band (105) comprises a base layer made of flexible material, the base layer is embedded with a plurality of packaging cylinders (106) made of high-strength material, and the packaging cylinders (106) are used for installing infrared emission modules.

3. The safety precaution device of claim 2, characterized in that the pavement end (100) further comprises an elongated package housing (107) made of inorganic heat conductive material for packaging the transmitting antenna (104), the package housing (107) comprising a slot for mounting a radio frequency antenna.

4. The safety precaution device of claim 3, characterized by further comprising a filler layer (108) made of a hot melt material, the filler layer (108) being located at the lower end of the transmission band (105), the encapsulating housing (107).

5. The safety precaution device of any one of claims 1-4, characterized in that the vehicle-mounted end (200) comprises a plurality of receiving antennas coupled with the transmitting antenna (104), the receiving antennas being tag antennas, the receiving antennas being fixedly distributed at the lower end face of the vehicle body.

6. The safety precaution device according to claim 5, characterized in that the vehicle-mounted terminal (200) further comprises a detection circuit electrically connected with each receiving antenna, the detection circuit is used for detecting a voltage or current signal of each receiving antenna, and when the signal is detected to be generated, the control unit of the vehicle-mounted terminal (200) drives an alarm circuit to send out alarm information to remind personnel on the vehicle.

7. The safety precaution device of claim 6, characterized in that the pavement end (100) further comprises a communication circuit, and the pavement end (100) is connected with the remote unit (109) through the communication circuit in a communication way, so as to form a structure for transmitting the pavement end (100) to the remote unit (109) through the communication circuit.

8. The safety precaution device of claim 7, wherein the monitoring unit (103) obtains vehicle information and transmits it to a remote unit (109) via the communication circuit.

9. The safety precaution device of any one of claims 6-8, characterized in that the vehicle-mounted terminal (200) further comprises a memory circuit storing vehicle identification information uniquely corresponding to the vehicle, said vehicle identification information being read by the rf transmitting antenna (104) and transmitted to the remote unit (109) through the communication circuit when the vehicle-mounted rf receiving antenna is activated by the rf transmitting antenna (104).

Background

In the process of running on the highway, because the speed of a motor vehicle is fast, the road section of going is long, most periods form the condition better, appear the lacked in the driving process very easily, cause the lane that deviates in the driving process, collide urgent lane or middle greenbelt even, current novel vehicle utilizes visual identification technique to warn and correct the lane that deviates, but the great original vehicle of visual identification technique stock is reformed transform, and application range is limited. It is well known that there has been a problem of unsupervised traffic lane occupancy on highways due to the long routes and limited monitoring equipment.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention firstly provides an intelligent safety early warning device for an expressway, so as to solve the technical problems that the traditional vehicle lane deviates from the road and occupies the lane, the active monitoring cannot be reliably realized, and the vehicle recognition device is high in cost and difficult to modify.

The technical scheme is as follows: the system comprises a road surface end which is paved on a detection road surface of the expressway and used for monitoring the position of a vehicle, wherein the road surface end comprises an infrared transmitting circuit and an infrared receiving circuit; a photoelectric path is formed between the infrared transmitting circuit and the infrared circuit through an infrared transmitting end and an infrared receiving end, the infrared transmitting circuit and the infrared receiving circuit form an infrared coverage area covering a pavement end monitoring area, and when a vehicle wheel enters the monitoring area, at least part of infrared rays are blocked and a signal that the vehicle enters the monitoring area is generated; the pavement end also comprises a monitoring unit, and when a signal that the vehicle enters a monitoring area is generated, the monitoring unit monitors the vehicle; the pavement end also comprises a radio frequency circuit, and the radio frequency circuit comprises a transmitting antenna attached to part or all of the monitoring area; the corresponding vehicle-mounted end comprises a radio frequency receiving circuit coupled with the radio frequency transmitting circuit, when a vehicle enters the monitoring area, the radio frequency receiving circuit is excited and generates a corresponding electric signal, and when the electric signal occurs, the vehicle-mounted end sends an alarm signal to remind people in the vehicle.

In the above or some embodiments, the road surface end includes an emission band of a belt structure for encapsulating the infrared emission end and the infrared receiving end of the infrared emission circuit and the infrared receiving circuit, the emission band includes a base layer made of a flexible material, the base layer is embedded with a plurality of encapsulation cylinders made of a high-strength material, and the encapsulation cylinders are used for installing the infrared emission module.

In the above or some embodiments, the pavement end further includes an elongated package casing made of an inorganic heat conductive material for packaging the transmitting antenna, and the package casing includes a slot for mounting the radio frequency antenna.

In the above or some embodiments, the package further comprises a filler layer made of a hot melt material, and the filler layer is positioned at the lower end of the emission band and the packaging shell.

In the foregoing or some embodiments, the vehicle-mounted end includes a plurality of receiving antennas coupled to the transmitting antenna, the receiving antennas are tag antennas, and the receiving antennas are fixedly distributed at the lower end surface of the vehicle body.

In the foregoing or some embodiments, the vehicle-mounted end further includes a detection circuit electrically connected to each of the receiving antennas, the monitoring circuit is configured to detect a voltage or current signal of each of the receiving antennas, and when it is detected that a signal is generated, the control unit of the vehicle-mounted end drives the alarm circuit to send alarm information to remind people on the vehicle.

In the foregoing or some embodiments, the pavement end further includes a communication circuit, and the pavement end is in communication connection with the remote unit through the communication circuit, so as to form a structure for transmitting the pavement end to the remote unit through the communication circuit.

In the above or some embodiments, the monitoring unit obtains vehicle information and transmits it to a remote unit via the communication circuit.

In the foregoing or some embodiments, the vehicle-mounted terminal further includes a storage circuit, where the storage circuit stores vehicle identification information uniquely corresponding to a vehicle, and when the vehicle-mounted rf receiving antenna is activated by the rf transmitting antenna, the vehicle identification information is read by the rf transmitting antenna and transmitted to the remote unit through the communication circuit.

The realization of the function of the scheme has great application prospect for a large number of existing vehicles, the existing vehicles are not required to be greatly technically improved, the pavement end can be paved by utilizing the existing expressway communication system, the scheme is quicker and safer in reaction on reminding drivers, and has greater safety advantage compared with a visual identification scheme; on the other hand, the pavement end and the vehicle-mounted end are economical in pavement and installation modes, can be applied to two sides of the expressway on a large scale, and can be used as powerful means for collecting vehicle driving information.

Drawings

FIG. 1 is a schematic diagram of the present invention in use.

FIG. 2 is a schematic view of a vehicle intruding into an infrared coverage area.

Fig. 3 is a schematic structural view of a pavement end according to the present invention.

FIG. 4 is a schematic cross-sectional view of a pavement end according to the present invention.

Fig. 5 is a schematic structural diagram of a road surface end transmitting band in the invention.

Fig. 6 is a schematic structural view of a road surface end in the present invention.

FIG. 7 is a schematic circuit diagram of the road side and the vehicle side of the present invention.

Fig. 8 is an enlarged schematic view of a portion a in fig. 4.

Detailed Description

The following detailed description is made with reference to the accompanying drawings.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Those of ordinary skill in the art will recognize that the directional terms "upper," "lower," "outer," "inner," etc., are used in a descriptive sense with respect to the figures and are not intended to limit the scope of the claims.

As shown in fig. 1-8, the technical scheme is as follows: the system comprises a road surface end 100 which is paved on a detection road surface of an expressway and used for monitoring the position of a vehicle, and an on-board unit which is fixedly installed on the vehicle. The road end 100 communicates with the remote unit 109 through integrated devices and stores information, and the road end 100 includes an active monitoring means and a passive monitoring means for monitoring whether the vehicle is in dangerous deviation or illegal busy state.

The active monitoring means is realized through an infrared transmitting circuit 101 and an infrared receiving circuit 102, a photoelectric path is formed between the infrared transmitting circuit 101 and the infrared circuit through an infrared transmitting end and an infrared receiving end, the infrared transmitting circuit 101 and the infrared receiving circuit 102 form an infrared coverage area covering a monitoring area of the pavement end 100, and when a vehicle wheel enters the monitoring area, at least part of infrared rays are blocked and a signal that the vehicle enters the monitoring area is generated. The infrared transmitting circuit 101 comprises an infrared driving circuit and a plurality of infrared transmitting heads, the infrared receiving circuit 102 corresponds to and is matched with the infrared receiving heads, when infrared rays are in a path, a circuit of a photoelectric conversion circuit in the infrared receiving heads is in a path state, and when the infrared rays are blocked, the path is broken and corresponding voltage or current signal changes are generated; each infrared emission head corresponds to unique address information and position information, a part of infrared path is necessarily blocked when the front wheel or the rear wheel of the square vehicle is positioned in an infrared coverage area, and the time T of the infrared path from the first interruption is recorded₁、T₂、T₃、T₄、T₅ T₆According to the distance D between the adjacent infrared passages, the instantaneous speed per hour and the average speed per hour of the vehicle entering can be generated to be used for judging whether overspeed behaviors exist or not.

The monitoring system also comprises a monitoring unit 103, when a signal that the vehicle enters a monitoring area is generated, the monitoring unit 103 is started and monitors the vehicle, the monitoring unit 103 can be an intelligent monitoring terminal arranged on one side of the expressway, such as a camera, and the like, the monitoring terminal collects vehicle information, the vehicle information comprises but is not limited to license plate information, driver information and vehicle characteristic information, the shooting action of the camera can be set to be multiple times or timing monitoring, so-called multiple monitoring can be carried out on the vehicle, the monitoring terminal can be multiple times, so-called timing monitoring, the monitoring terminal is started and continuously monitors a certain amount of time when the vehicle enters the monitoring area signal, so as to find whether the vehicle has accident information, and judge whether to inform the remote unit 109, in the scheme, the intelligent monitoring terminal can select an intelligent camera with a visual identification function, whether an accident occurs after the vehicle enters the monitoring area is judged through the intelligent camera, and when the accident occurs, the intelligent communication monitoring terminal informs the remote unit 109 through a communication circuit. Further, the road end 100 can be provided with a prompt circuit, and the prompt unit informs the vehicles to come and go after an accident through acousto-optic alarm, and carries out active alarm and prompt rescue; the prompting circuit comprises an acousto-optic alarm unit execution end and a driving circuit, wherein the driving circuit is electrically connected to a control unit of the pavement end 100, and the control unit executes a single instruction set or partial instruction set to drive the prompting circuit after learning that an accident occurs.

The pavement terminal 100 further includes a passive monitoring means, and a radio frequency transmitting circuit also coupled to the vehicle terminal 200 through a radio frequency circuit. The radio frequency circuit comprises a transmitting antenna 104 attached to part or all of the monitoring area; the corresponding vehicle-mounted end 200 comprises a radio frequency receiving circuit 201 coupled with the radio frequency transmitting circuit, when a vehicle enters the monitoring area, the radio frequency receiving circuit 201 is excited and generates a corresponding electric signal, and when the electric signal occurs, the vehicle-mounted end 200 sends an alarm signal to remind people in the vehicle. In a specific implementation of the above solution, the pavement end 100 includes an emission band 105 having a band structure for encapsulating the infrared emission end and the infrared receiving end of the infrared emission circuit 101 and the infrared receiving circuit 102, the emission band 105 includes a base layer made of a flexible material such as a hot-melt rubber, a plurality of encapsulation cylinders 106 made of a high-strength material including, but not limited to, alumina ceramics are embedded in the base layer, and the encapsulation cylinders 106 are used for mounting the infrared emission module; also included is an elongated package housing 107 made of an inorganic thermally conductive material, including but not limited to alumina ceramic, for packaging the transmitting antenna 104, the package housing 107 including a slot for mounting a radio frequency antenna.

Specifically, a bottom layer of thermoplastic material is first filled in a thermoplastic material mold, then the package shell 107 is laid on the surface of the bottom layer of thermoplastic material, in order to be fixedly laid on a road surface at a later stage, a heat conducting sheet is further laid in communication with the package shell 107, the heat conducting sheet extends to cover the bottom layer of thermoplastic material as much as possible, a heat conducting path is formed between the heat conducting sheet and the package shell 107, and then a top layer of thermoplastic material is filled, so that the package shell 107 is exposed out of the surface of the top layer of thermoplastic material, and the emission band 105 is 5-10mm higher than the surface of the top. In order to avoid the problem of adjusting the flatness when the elongated package housing 107 is mounted, the package housing 107 has a single structure, and a plurality of shorter package housings 107 are connected end to form the elongated package housing 107. The emission band 105 is provided with a plurality of mounting holes along the length of the emission band 105, and the packaging cylinder 106 is fixedly mounted in the mounting holes.

In the above embodiment, in order to mount the transmitting antenna 104, the transmitting antenna 104 is first encapsulated in a wave-transmitting material such as resin, and the encapsulation of the antenna may be completed by filling, and the antenna after encapsulation is fixedly embedded in the groove formed by the encapsulating housing 107 and is flush with the surface of the groove.

When the pavement end 100 needs to be paved and fixed, the heat conducting loop enables the bottom layer thermoplastic material to be melted and attached to the asphalt or concrete pavement to form the fixation of the pavement end 100, when the pavement end 100 needs to be dismantled or moved, the encapsulated radio frequency transmitting antenna 104 is firstly dismantled, then the encapsulated shell 107 is heated, and the dismantling or moving is carried out after the adhesive force between the bottom layer thermoplastic material and the pavement is reduced.

The vehicle-mounted terminal 200 comprises a plurality of receiving antennas coupled with the transmitting antenna 104, wherein the receiving antennas are tag antennas and are fixedly distributed on the lower end face of the vehicle body; preferably, all the tag antennas are fixed on the surface of the chassis of the vehicle frame, and can be divided into three groups, wherein each group is arranged linearly, corresponds to the edge of two sides of the chassis of the vehicle respectively, extends to the head of the vehicle, and also comprises a position located on the central line of the chassis of the vehicle frame; each label type antenna is respectively provided with a monitoring circuit, each detection circuit comprises an inductance element which is connected with the receiving antenna in parallel, the voltage values at two ends of each inductance element are used as voltage signal input ends of a voltage amplifying circuit, and the voltage signals are transmitted to a control unit after passing through an AD conversion circuit. Each tag antenna may further include a memory circuit, which may be an integrated memory or an IC unit including a memory, which stores unique identification information of the vehicle and also contains position information of the corresponding tag antenna, and when the corresponding one or more tag antennas are activated by the radio frequency circuit transmitting antenna 104, the inductive element connected in parallel with each tag antenna generates a voltage and is amplified by the amplifying circuit; the tag antenna and the radio frequency transmitting antenna 104 communicate with each other to transmit the stored vehicle identification information to the road surface end 100, and the communication can be achieved through the existing communication protocol, such as RIFD communication, bluetooth communication protocol, WIFI communication protocol, and any other existing technology capable of achieving communication.

In the above embodiment, once the tag antenna of the vehicle-mounted end 200 is activated, the control unit of the vehicle-mounted end 200 activates the alarm circuit to remind people on the vehicle, the alarm circuit of the vehicle-mounted end 200 may be an independent alarm device independent of the vehicle system of the vehicle, for example, the alarm device is disposed at the driving seat and provided with a voice alarm unit and an audible and visual alarm unit, the above alarm mode may be one or a combination of several types, and the alarm device is provided with the alarm circuit, and the alarm circuit is connected with the control unit in a wired or wireless manner to form a communication or power-on path. Of course, the existing communication line and communication protocol of the vehicle machine can be utilized immediately in the scheme, and the alarm information is implanted into the display unit or the sound unit of the vehicle machine so as to remind people on the vehicle.

The communication circuit of the road-side 100 is connected to the remote unit 109 for communication, so as to form a structure for transmitting the road-side 100 to the remote unit 109 through the communication circuit. The communication circuit can be in a wired or wireless mode, such as WIFI communication, 4G and 5G communication modules, Internet communication and other communication means.

The realization of the function of the scheme has great application prospect for a large number of existing vehicles, the existing vehicles are not required to be greatly technically improved, the pavement end 100 can be paved by utilizing the existing expressway communication system, the scheme is more rapid and safe in reaction on reminding drivers, and has greater safety advantage compared with a visual identification scheme; on the other hand, the pavement end 100 and the vehicle-mounted end 200 are economical in pavement and installation modes, can be applied to two sides of a highway in a large scale, and can be used as powerful means for collecting vehicle driving information.