A device for detecting water flow velocity and flow direction

Abstract

The invention relates to a flow velocity and direction detection device, and in particular to a device for detecting the flow velocity and flow direction of water flow, comprising a shell and a battery, wherein a first rotating shaft and a second rotating shaft are rotatably connected to the shell respectively, a first connecting rod and a second connecting rod are fixed to one end of the first rotating shaft and the second rotating shaft respectively, propellers are fixed to the first connecting rod and the second connecting rod, a magnet is fixed to the other end of the first rotating shaft, the other end of the second rotating shaft is connected to a generator shaft, a circuit board is arranged between the magnet and the generator, a controller is arranged on the circuit board, the controller is connected to a magnetic encoder chip for calculating the flow velocity in cooperation with the magnet, and the controller is connected to an electronic compass chip for detecting the flow direction; the technical solution provided by the invention can effectively overcome the defects of the prior art, such as large measurement error, complex circuit, and inability to work continuously for a long time.

Description

Technical Field

[0001] The invention relates to a flow velocity and direction detection device, in particular to a device for detecting the flow velocity and direction of water flow. Background Art

[0002] During long-term use, offshore structures are constantly affected by factors such as the scouring of ocean currents, the impact of ocean waves, and the breeding of marine organisms. They are prone to softening of the power of the offshore structure foundation, erosion and aging of materials, etc., which leads to the attenuation of the resistance of offshore structural parts and the overall resistance, affecting the safety and durability of the structure. Therefore, long-term monitoring of ocean currents is of great significance for understanding the performance evolution of offshore structures, evaluating the working status of components, conducting targeted maintenance, avoiding safety accidents, ensuring the safety of offshore structures, and increasing their service life. The velocity and direction of water flow are one of the main factors affecting the safety of offshore construction platforms. Monitoring the velocity and direction of ocean water flow will provide safety guarantees for the normal use of offshore structures.

[0003] Flow velocity and direction meters are important instruments used in hydrological measurements. Traditional flow velocity and direction meters have the disadvantages of large measurement errors, complex circuits, and inability to work continuously for a long time, and therefore cannot meet the needs of hydrological measurements. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a device for detecting the flow velocity and direction of water flow, which can effectively overcome the defects of the prior art such as large measurement errors, complex circuits, and inability to work continuously for a long time.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A device for detecting the flow velocity and direction of water flow, comprising a housing and a battery, wherein a first rotating shaft and a second rotating shaft are rotatably connected to the housing, a first connecting rod and a second connecting rod are fixed to one end of the first rotating shaft and the second rotating shaft, respectively, and a propeller is fixed to the first connecting rod and the second connecting rod;

[0009] A magnet is fixed to the other end of the first rotating shaft, and the other end of the second rotating shaft is connected to the generator shaft. A circuit board is provided between the magnet and the generator, and a controller is provided on the circuit board. The controller is connected to a magnetic encoder chip for calculating the flow velocity in cooperation with the magnet, and the controller is connected to an electronic compass chip for detecting the flow direction.

[0010] Preferably, the generator charges the battery through a charging circuit, and the battery supplies power to the circuit board through a power supply circuit.

[0011] Preferably, the controller is connected to a communication module U7 for sending flow rate and flow direction data to the outside and supporting external parameter settings, and the communication module U7 adopts an optical fiber module.

[0012] Preferably, the magnetic encoder chip U6 is connected to 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 during the rotation of the first shaft.

[0013] Preferably, the electronic compass chip U1 is connected to filter capacitors C2, C7, C8, a filter inductor L1, and pull-up resistors R12, R13.

[0014] Preferably, 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;

[0015] A self-resetting fuse F3 and a high-voltage protection component D2 for suppressing external voltage are connected between the generator access port P2 and the rectifier bridge D1, an energy storage filter capacitor C21 is connected between the rectifier bridge D1 and the voltage regulator VR1, an energy storage filter capacitor C3 is connected between the voltage regulator VR1 and the battery charging chip U5, and the battery charging chip U5 is connected to the energy storage filter capacitor C1.

[0016] Preferably, 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, 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 to an energy storage inductor L10, energy storage capacitors C57 and C5, and voltage-dividing resistors R7 and R15 for adjusting the output voltage.

[0017] Preferably, the communication module U7 is connected to filter capacitors C13, C19, C12, C20, filter inductors L3, L4, and pull-up resistors R16, R17.

[0018] Preferably, the outer shell is provided with a first annular shell and a second annular shell extending inwards, respectively, and sealed bearings are installed between the first rotating shaft and the first annular shell, and between the second rotating shaft and the second annular shell.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the device for detecting the flow velocity and direction of water flow provided by the present invention utilizes the water flow rotating mechanism of the device to convert the current flow velocity into a known number of pulses through a magnetic encoder chip, and calculates the current flow velocity based on the recorded number of pulses, and obtains the current magnetic field direction by reading the internal data of the electronic compass chip, thereby obtaining the flow direction of water flow, thereby achieving accurate measurement of the flow velocity and direction of water flow, and the overall circuit is very simple; with the help of a generator, the energy of ocean currents can be converted into electrical energy to charge the battery, thereby improving the ability of the device to work continuously for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 For the present invention Figure 1 A magnified schematic diagram of the local structure;

[0024] Figure 3 It is a schematic diagram of the system of the present invention;

[0025] Figure 4 is a circuit diagram of the controller in the present invention;

[0026] Figure 5 Schematic diagram of the magnetic encoder chip and its peripheral circuits in the present invention;

[0027] Figure 6 This is a schematic diagram of the electronic compass chip and its peripheral circuits in the present invention;

[0028] Figure 7 It is a schematic diagram of the communication module and its peripheral circuits in the present invention;

[0029] Figure 8 is a circuit diagram of a charging circuit in the present invention;

[0030] Fig. 9 It is a circuit diagram of the power supply circuit in the present invention. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] A device for detecting the velocity and direction of water flow, such as Figures 1 to 3 As shown, it includes a housing 1 and a battery 13, the housing 1 is rotatably connected to a first rotating shaft 7 and a second rotating shaft 11, one end of the first rotating shaft 7 and the second rotating shaft 11 are respectively fixed to a first connecting rod 4 and a second connecting rod 5, and the first connecting rod 4 and the second connecting rod 5 are both fixed to a propeller 6;

[0033] A magnet 8 is fixed to the other end of the first rotating shaft 7, and the other end of the second rotating shaft 11 is connected to the shaft of a generator 12. A circuit board 10 is provided between the magnet 8 and the generator 12. A controller is provided on the circuit board 10. The controller is connected to a magnetic encoder chip for calculating the flow velocity in cooperation with the magnet 8, and the controller is connected to an electronic compass chip for detecting the flow direction.

[0034] Utilizing the water flow rotating mechanism of the device, the current flow velocity is converted into a known number of pulses through the magnetic encoder chip, and the current flow velocity is calculated based on the recorded number of pulses. By reading the internal data of the electronic compass chip, the current magnetic field direction is obtained, and then the water flow direction is obtained, thereby achieving accurate measurement of the water flow velocity and direction.

[0035] The housing 1 is provided with a first annular housing 2 and a second annular housing 3 extending inwards, respectively, and sealed bearings 9 are installed between the first rotating shaft 7 and the first annular housing 2, and between the second rotating shaft 11 and the second annular housing 3. This arrangement can improve the sealing performance of the device as a whole, prevent seawater from entering the housing 1 and corroding the internal electronic components, and ensure the normal operation of the device.

[0036] like Figure 4 As shown, resistor R14 is the BOOT pin selection of the chip, resistor R4 and capacitor C3 constitute the reset circuit of the microcontroller, and U3 is the microcontroller.

[0037] like Figure 5 As shown, the magnetic encoder chip U6 is connected to the filter capacitor C11 and the filter inductor L2. When the first shaft 7 rotates, the magnetic encoder chip U6 outputs corresponding pulses through the magnetic field of the induction magnet 8.

[0038] L2 is a filter inductor, C11 is a filter capacitor, these two devices ensure stable operation of the power supply, U6 is a magnetic encoder chip, by detecting the induced magnetic field of the magnet 8 reserved on the first shaft 7, the magnetic sensor can output 1024 pulses using the magnetic field of the induced magnet 8 when the first shaft 7 rotates one circle. This sensor can detect whether the magnet 8 is online, greatly improving the measurement accuracy.

[0039] like Figure 6 As shown, the electronic compass chip U1 is connected to filter capacitors C2, C7, C8, filter inductor L1, and pull-up resistors R12, R13.

[0040] C2, C7, and C8 are filter capacitors, L1 is a filter inductor, and the circuit composed of capacitors and inductors stabilizes the chip power supply. R12 and R13 are pull-up resistors for communication, and C9 and C10 are external capacitors of the electronic compass chip U1.

[0041] The controller is connected to a communication module U7 for sending flow rate and flow direction data to the outside and supporting external parameter settings. The communication module U7 adopts an optical fiber module.

[0042] like Figure 7 As shown, the communication module U7 is connected to filter capacitors C13, C19, C12, C20, filter inductors L3, L4, and pull-up resistors R16, R17.

[0043] C13, C19, C12, and C20 are filter capacitors, L3 and L4 are filter inductors, and the circuit composed of capacitors and inductors stabilizes the power supply of the communication module U7. R16 is the pull-up resistor for receiving, and R17 is the pull-up resistor for sending.

[0044] 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.

[0045] like Figure 8 As shown, 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;

[0046] A self-resetting fuse F3 and a high-voltage protection component D2 for suppressing external voltage are connected between the generator access port P2 and the rectifier bridge D1, an energy storage filter capacitor C21 is connected between the rectifier bridge D1 and the voltage regulator VR1, an energy storage filter capacitor C3 is connected between the voltage regulator VR1 and the battery charging chip U5, and the battery charging chip U5 is connected to the energy storage filter capacitor C1.

[0047] P2 is the generator access port, F3 is a self-resetting fuse, D2 is a high-voltage protection component, and the circuit formed by F3 and D2 suppresses external excessive voltage. D1 is a rectifier bridge, which converts the generator's AC power into DC power. VR1 is a three-stage voltage stabilizer, which converts high-voltage DC power into low-voltage DC power. C3, C21, and C1 are energy storage filter capacitors, and R39 is the charging current limit pin.

[0048] like Fig. 9 As shown, 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, and the DC / DC chip U4 is connected to an energy storage inductor L10, energy storage capacitors C57 and C5, and voltage-dividing resistors R7 and R15 for adjusting the output voltage.

[0049] F2 is a self-resetting fuse, which provides self-protection when the internal power supply fails. D5 is an ESD device that protects the input power supply from overvoltage. C33 is a filter capacitor that protects the power supply stability. R8 is the pull-up resistor of the chip. U4 is a low-power DC / DC chip that can provide power for the internal circuit. C36 is the signal power supply of the chip. L10 is the energy storage inductor of the power supply part. R15 and R7 are the voltage divider resistors of the power supply to adjust the chip output voltage. C57 and C5 are energy storage capacitors.

[0050] In the technical solution of the present application, the magnetic encoder chip U6 and the electronic compass chip U1 are used for non-contact measurement, with small resistance and high detection sensitivity. The built-in electronic compass can effectively detect the direction of turbulent flow. The power generation device and backup battery can carry out all-weather detection tasks. Fiber optic communication can effectively overcome the defect that the equipment cables are easily corroded by seawater, ensuring the long-term and stable operation of the device.

[0051] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for detecting the flow velocity and flow direction of water, characterized in that: The invention comprises a housing (1) and a battery (13); the housing (1) is rotatably connected to a first rotating shaft (7) and a second rotating shaft (11); one end of the first rotating shaft (7) and the second rotating shaft (11) are respectively fixed to a first connecting rod (4) and a second connecting rod (5); and the first connecting rod (4) and the second connecting rod (5) are both fixed to a propeller (6); A magnet (8) is fixed to the other end of the first rotating shaft (7), the other end of the second rotating shaft (11) is connected to the shaft of a generator (12), a circuit board (10) is provided between the magnet (8) and the generator (12), a controller is provided on the circuit board (10), the controller is connected to a magnetic encoder chip for calculating flow velocity in cooperation with the magnet (8), and the controller is connected to an electronic compass chip for detecting flow direction.

2. The device for detecting water flow velocity and flow direction according to claim 1, characterized in that: 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 device for detecting water flow velocity and flow direction according to claim 2, characterized in that: The controller is connected to a communication module U7 for sending flow rate and flow direction data to the outside and supporting external parameter settings. The communication module U7 adopts an optical fiber module.

4. The device for detecting water flow velocity and flow direction according to any one of claims 1 to 3, characterized in that: The magnetic encoder chip U6 is connected to the filter capacitor C11 and the filter inductor L2. When the first rotating shaft (7) rotates, the magnetic encoder chip U6 outputs corresponding pulses through the magnetic field of the induction magnet (8).

5. The device for detecting water flow velocity and flow direction according to claim 4, characterized in that: The electronic compass chip U1 is connected to filter capacitors C2, C7, C8, filter inductor L1, and pull-up resistors R12, R13.

6. The device for detecting water flow velocity and flow direction according to claim 5, characterized in that: 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-resetting fuse F3 and a high-voltage protection component D2 for suppressing external voltage are connected between the generator access port P2 and the rectifier bridge D1, an energy storage filter capacitor C21 is connected between the rectifier bridge D1 and the voltage regulator VR1, an energy storage filter capacitor C3 is connected between the voltage regulator VR1 and the battery charging chip U5, and the battery charging chip U5 is connected to the energy storage filter capacitor C1.

7. The device for detecting water flow velocity and flow direction according to claim 6, characterized in that: 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 (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 to an energy storage inductor L10, energy storage capacitors C57 and C5, and voltage divider resistors R7 and R15 for adjusting the output voltage.

8. The device for detecting water flow velocity and flow direction according to claim 7, characterized in that: The communication module U7 is connected to filter capacitors C13, C19, C12, C20, filter inductors L3, L4, and pull-up resistors R16, R17.

9. The device for detecting water flow velocity and flow direction according to any one of claims 1 to 3, characterized in that: The outer shell (1) is provided with a first annular shell (2) and a second annular shell (3) extending inwards, respectively. A sealed bearing (9) is installed between the first rotating shaft (7) and the first annular shell (2), and between the second rotating shaft (11) and the second annular shell (3).

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