1. A device for detecting velocity and direction of water flow, characterized in that: the multifunctional electric fan comprises a shell (1) and a battery (13), wherein the shell (1) is respectively and rotatably connected with a first rotating shaft (7) and a second rotating shaft (11), one end of the first rotating shaft (7) and one end of the second rotating shaft (11) are respectively and fixedly provided with a first connecting rod (4) and a second connecting rod (5), and the first connecting rod (4) and the second connecting rod (5) are respectively and fixedly provided with a propeller (6);

the other end of first pivot (7) is fixed with magnet (8), the other end and the generator (12) hub connection of second pivot (11), be equipped with circuit board (10) between magnet (8) and generator (12), be equipped with the controller on circuit board (10), the controller links to each other with the magnetic encoder chip that is used for calculating the velocity of flow with magnet (8) cooperation, the controller links to each other with the electron compass chip that is used for detecting the flow direction.

2. The apparatus of claim 1, wherein the apparatus further comprises: the generator (12) charges the battery (13) through a charging circuit, and the battery (13) supplies power to the circuit board (10) through a power supply circuit.

3. The apparatus of claim 2, wherein the apparatus further comprises: the controller is connected with a communication module U7 which is used for sending flow speed and flow direction data outwards and supporting external parameter setting, and the communication module U7 adopts a fiber module.

4. The apparatus for detecting flow rate and direction of water according to any one of claims 1-3, wherein: the magnetic encoder chip U6 is connected with a filter capacitor C11 and a filter inductor L2, and the magnetic encoder chip U6 outputs corresponding pulses through the magnetic field of the induction magnet (8) in the rotating process of the first rotating shaft (7).

5. The apparatus of claim 4, wherein the apparatus further comprises: the electronic compass chip U1 is connected with filter capacitors C2, C7 and C8, a filter inductor L1 and pull-up resistors R12 and R13.

6. The apparatus of claim 5, wherein the apparatus further comprises: the charging circuit comprises a generator access port P2, a rectifier bridge D1, a voltage stabilizer VR1 and a battery charging chip U5 which are connected in sequence;

the access is used for restraining self-reset fuse F3, high-voltage protection subassembly D2 of external voltage from the access between generator access port P2, the rectifier bridge D1, access energy storage filter electric capacity C21 between rectifier bridge D1, the stabiliser VR1, access energy storage filter electric capacity C3 between stabiliser VR1, the battery charging chip U5, energy storage filter electric capacity C1 is connected to battery charging chip U5.

7. The apparatus of claim 6, wherein the apparatus further comprises: the power supply circuit comprises a DC/DC chip U4, a self-resetting fuse F2 is connected between the DC/DC chip U4 and a battery (13), a high-voltage protection component D5, a filter capacitor C33 and a pull-up resistor R8 are connected between the DC/DC chip U4 and the self-resetting fuse F2, and the DC/DC chip U4 is connected with an energy storage inductor L10, energy storage capacitors C57 and C5, and voltage division resistors R7 and R15 for adjusting output voltage.

8. The apparatus of claim 7, wherein the apparatus further comprises: the communication module U7 is connected with filter capacitors C13, C19, C12 and C20, filter inductors L3 and L4 and pull-up resistors R16 and R17.

9. The apparatus for detecting flow rate and direction of water according to any one of claims 1-3, wherein: the casing (1) is provided with a first annular casing (2) and a second annular casing (3) which extend inwards respectively, and sealing bearings (9) are installed between the first rotating shaft (7) and the first annular casing (2), and between the second rotating shaft (11) and the second annular casing (3).

Background

In the long-term use process of the offshore structure, the offshore structure is constantly influenced by factors such as scouring of ocean currents, impact of ocean waves and breeding of marine organisms, the phenomena of dynamic softening, material erosion and aging of the offshore structure are easy to occur, the attenuation of offshore structures and overall resistance is caused, and the safety and durability of the structure are influenced. Therefore, the ocean current condition is monitored for a long time, the performance evolution of the offshore structure is known, the working state of the component is evaluated, the targeted maintenance is carried out, the safety accident is avoided, the safety of the offshore structure is ensured, the service life is prolonged, the water flow velocity and the water flow direction are one of the main factors influencing the safety of the offshore construction platform, and the safety guarantee is provided for the normal use of the offshore structure by monitoring the ocean current velocity and the water flow direction.

The flow velocity and flow direction instrument is an important instrument used in the hydrological measurement work, and the traditional flow velocity and flow direction instrument has the defects of large measurement error, complex circuit and incapability of continuously working for a long time, so that the requirement of the hydrological measurement work cannot be met.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects in the prior art, the invention provides a device for detecting the flow velocity and the flow direction of water flow, which can effectively overcome the defects of large measurement error, complex circuit and incapability of continuously working for a long time in the prior art.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme:

a device for detecting the flow velocity and the flow direction of water flow comprises a shell and a battery, wherein the shell is respectively and rotatably connected with a first rotating shaft and a second rotating shaft, one end of the first rotating shaft and one end of the second rotating shaft are respectively and fixedly provided with a first connecting rod and a second connecting rod, and propellers are respectively and fixedly arranged on the first connecting rod and the second connecting rod;

the other end of first pivot is fixed with magnet, the other end and the generator shaft of second pivot are connected, be equipped with the circuit board between magnet and the generator, be equipped with the controller on the circuit board, the controller links to each other with the magnetic encoder chip that is used for calculating the velocity of flow with the magnet cooperation, the controller links to each other with the electron compass chip that is used for detecting the flow direction.

Preferably, the generator charges a battery through a charging circuit, and the battery supplies power to the circuit board through a power supply circuit.

Preferably, the controller is connected with a communication module U7 for sending flow rate and flow direction data outwards and supporting external parameter setting, and the communication module U7 adopts a fiber optic module.

Preferably, the magnetic encoder chip U6 is connected to the filter capacitor C11 and the filter inductor L2, and the magnetic encoder chip U6 outputs a corresponding pulse through the magnetic field of the induction magnet during the rotation of the first rotating shaft.

Preferably, the electronic compass chip U1 is connected with filter capacitors C2, C7 and C8, a filter inductor L1 and pull-up resistors R12 and R13.

Preferably, the charging circuit comprises a generator access port P2, a rectifier bridge D1, a voltage stabilizer VR1 and a battery charging chip U5 which are connected in sequence;

the access is used for restraining self-reset fuse F3, high-voltage protection subassembly D2 of external voltage from the access between generator access port P2, the rectifier bridge D1, access energy storage filter electric capacity C21 between rectifier bridge D1, the stabiliser VR1, access energy storage filter electric capacity C3 between stabiliser VR1, the battery charging chip U5, energy storage filter electric capacity C1 is connected to battery charging chip U5.

Preferably, the power supply circuit comprises a DC/DC chip U4, a self-resetting fuse F2 is connected between the DC/DC chip U4 and the battery, a high-voltage protection component D5, a filter capacitor C33 and a pull-up resistor R8 are connected between the DC/DC chip U4 and the self-resetting fuse F2, and the DC/DC chip U4 is connected with an energy storage inductor L10, energy storage capacitors C57 and C5 and voltage division resistors R7 and R15 for adjusting output voltage.

Preferably, the communication module U7 is connected to filter capacitors C13, C19, C12, C20, filter inductors L3, L4, and pull-up resistors R16, R17.

Preferably, the casing is provided with a first annular housing and a second annular housing which extend inwards respectively, and sealing bearings are mounted between the first rotating shaft and the first annular housing and between the second rotating shaft and the second annular housing.

(III) advantageous effects

Compared with the prior art, the device for detecting the flow velocity and the flow direction of the water flow provided by the invention has the advantages that the current flow velocity is converted into the known pulse number through the magnetic encoder chip by utilizing the water flow rotating mechanism of the device, the current flow velocity is calculated according to the recorded pulse number, the current magnetic field direction is obtained by reading the internal data of the electronic compass chip, and the flow direction of the water flow is further obtained, so that the accurate measurement of the flow velocity and the flow direction of the water flow is realized, and the whole circuit is very simple; the generator can convert ocean current energy into electric energy to charge the battery, so that the capacity of the device for long-time continuous work can be improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of the structure of FIG. 1 in accordance with the present invention;

FIG. 3 is a schematic diagram of the system of the present invention;

FIG. 4 is a schematic circuit diagram of a controller according to the present invention;

FIG. 5 is a schematic diagram of a magnetic encoder chip and its peripheral circuitry according to the present invention;

FIG. 6 is a schematic diagram of an electronic compass chip and its peripheral circuits according to the present invention;

FIG. 7 is a schematic diagram of a communication module and its peripheral circuits according to the present invention;

FIG. 8 is a circuit diagram of a charging circuit according to the present invention;

fig. 9 is a circuit diagram of the power supply circuit of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all 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.

A device for detecting the flow velocity and the flow direction of water flow is shown in figures 1 to 3 and comprises a shell 1 and a battery 13, wherein the shell 1 is respectively and rotatably connected with a first rotating shaft 7 and a second rotating shaft 11, one end of the first rotating shaft 7 and one end of the second rotating shaft 11 are respectively fixed with a first connecting rod 4 and a second connecting rod 5, and propellers 6 are respectively fixed on the first connecting rod 4 and the second connecting rod 5;

the other end of first pivot 7 is fixed with magnet 8, and the other end of second pivot 11 is connected with generator 12 hub connection, is equipped with circuit board 10 between magnet 8 and the generator 12, is equipped with the controller on the circuit board 10, and the controller links to each other with the magnetic encoder chip that is used for calculating the velocity of flow with the cooperation of magnet 8, and the controller links to each other with the electron compass chip that is used for detecting the flow direction.

Converting the current flow rate into the known pulse number by using a water flow rotating mechanism of the device through a magnetic encoder chip, and calculating the current flow rate according to the recorded pulse number; the current magnetic field direction is obtained by reading the internal data of the electronic compass chip, and then the water flow direction is obtained, so that the accurate measurement of the water flow speed and the water flow direction is realized.

The casing 1 is provided with a first annular casing 2 and a second annular casing 3 which extend inwards respectively, and sealing bearings 9 are arranged between the first rotating shaft 7 and the first annular casing 2 and between the second rotating shaft 11 and the second annular casing 3. Set up like this, can improve the holistic sealing performance of device, prevent that the sea water from getting into inside 1 shell, cause the erosion to inside electronic component, guarantee the device and normally work.

As shown in fig. 4, the resistor R14 is used for selecting a BOOT pin of the chip, the resistor R4 and the capacitor C3 form a reset circuit of the single chip, and the U3 is the single chip.

As shown in fig. 5, the magnetic encoder chip U6 is connected to the filter capacitor C11 and the filter inductor L2, and the magnetic encoder chip U6 outputs a corresponding pulse through the magnetic field of the induction magnet 8 during the rotation of the first rotating shaft 7.

L2 is filter inductance, and C11 is filter capacitance, and these two devices guarantee that the power stable operation, and U6 is the magnetic encoder chip, through detecting the induction magnetic field that reserves magnet 8 on first pivot 7, and magnetic sensor can utilize induction magnet 8's magnetic field output 1024 pulses when first pivot 7 rotates a week, and this sensor can detect whether magnet 8 is online, improves measurement accuracy greatly.

As shown in FIG. 6, the electronic compass chip U1 is connected with filter capacitors C2, C7 and C8, a filter inductor L1 and pull-up resistors R12 and R13.

C2, C7 and C8 are filter capacitors, L1 is a filter inductor, a circuit formed by the capacitors and the inductor enables a chip power supply to be stable, R12 and R13 are pull-up resistors for communication, and C9 and C10 are external capacitors of the electronic compass chip U1.

The controller is connected with a communication module U7 which is used for sending flow rate and flow direction data outwards and supporting external parameter setting, and the communication module U7 adopts a fiber module.

As shown in fig. 7, the communication module U7 is connected to filter capacitors C13, C19, C12, C20, filter inductors L3, L4, and pull-up resistors R16, R17.

C13, C19, C12 and C20 are filter capacitors, L3 and L4 are filter inductors, a circuit formed by the capacitors and the inductors enables a U7 power supply of the communication module to be stable, R16 is a receiving pull-up resistor, and R17 is a sending pull-up resistor.

The generator 12 charges the battery 13 through the charging circuit, and the battery 13 supplies power to the circuit board 10 through the power supply circuit.

As shown in fig. 8, the charging circuit includes a generator access port P2, a rectifier bridge D1, a voltage regulator VR1, and a battery charging chip U5 connected in sequence;

a self-reset fuse F3 and a high-voltage protection assembly D2 which are used for inhibiting external voltage are connected between a generator access port P2 and a rectifier bridge D1, an energy storage filter capacitor C21 is connected between the rectifier bridge D1 and a voltage stabilizer VR1, an energy storage filter capacitor C3 is connected between the voltage stabilizer VR1 and a battery charging chip U5, and the battery charging chip U5 is connected with the energy storage filter capacitor C1.

P2 is a generator access port, F3 is a self-resetting fuse, D2 is a high-voltage protection component, a circuit formed by F3 and D2 plays a role in inhibiting external over-high voltage, D1 is a rectifier bridge and converts alternating current of a generator into direct current, VR1 is a three-stage voltage stabilizer and converts high-voltage direct current into low-voltage direct current, C3, C21 and C1 are energy storage filter capacitors, and R39 is a charging current limiting value pin.

As shown in fig. 9, the power supply circuit includes a DC/DC chip U4, a self-resetting fuse F2 is connected between the DC/DC chip U4 and the battery 13, a high-voltage protection component D5, a filter capacitor C33 and a pull-up resistor R8 are connected between the DC/DC chip U4 and the self-resetting fuse F2, the DC/DC chip U4 is connected with an energy storage inductor L10, energy storage capacitors C57 and C5, and voltage dividing resistors R7 and R15 for adjusting output voltage.

F2 is from restoring to the throne fuse, carry out the self-protection when the internal power supply breaks down, D5 is the overvoltage production of ESD device protection input power, C33 is filter capacitor, the power supply of protection power supply is stable, R8 is the pull-up resistance of chip, U4 is the DC/DC chip of low-power consumption, can provide the power for the internal circuit, C36 is the signal power supply of chip, L10 is the energy storage inductance of power supply part, R15 and R7 are the divider resistance of power, the regulation to chip output voltage is realized, C57, C5 is energy storage capacitor.

Among this application technical scheme, utilize magnetic encoder chip U6, electron compass chip U1 to carry out the non-contact measurement, the resistance is little, and detectivity is high, can effectively detect the sinuous flow direction from taking the electron compass, carries power generation facility and backup battery and can carry out all-weather detection task, and the defect that the equipment cable easily received the sea water corruption can effectively be overcome in the optical fiber communication, guarantees the long-term even running of device.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.