Automatic leveling tipping bucket type rain sensor and control method

Abstract

The invention discloses an automatic leveling tipping bucket type rainfall sensor and a control method, and belongs to the technical field of tipping bucket type rainfall sensors. Comprising a rain receiving opening assembly, an outer cylinder, a base, a water injection funnel, a tipping bucket support, a metering tipping bucket assembly, a left tipping bucket dip angle supporting column assembly, a right tipping bucket dip angle supporting column assembly, a reed switch, a spirit bubble, a horizontal supporting plate and a drainage funnel. The system further comprises an electronic tilt angle sensor assembly, an electric push rod, a universal joint, a data acquisition terminal and a signal communication unit. The electronic tilt angle sensor assembly is installed on the horizontal support plate, one end of the electric push rod is connected with the horizontal support plate through the universal joint, and the other end is fixed on the base. The device has the advantages that horizontal data of the tipping bucket type rainfall sensor can be quantitatively measured and adjusted, and the accuracy of the sensor is greatly improved; when the vertical rod is installed, the accuracy and reliability of the rainfall sensor are improved, the field installation difficulty is reduced, and the installation cost is reduced; the maintenance cost of the rainfall station is reduced, and manpower and financial resources are greatly saved.

Description

Technical Field

[0001] The invention relates to the technical field of tipping bucket rain gauge sensors, in particular to an automatic leveling tipping bucket rain gauge sensor and a control method thereof. Background Art

[0002] The tipping bucket rain gauge is the largest and most widely used precipitation measuring instrument in the world today. The known tipping bucket rain gauge has the following outstanding advantages: simple structure, long life, low price, no power consumption and can be used for remote sensing. It is widely used in various fields such as hydrology, water conservancy, agriculture, meteorology, flood prevention and disaster reduction, transportation, etc.

[0003] The tipping bucket rain gauge sensor comprises: a rain receiving port assembly 1, an outer tube 2, a base 3, a water injection funnel 4, a tipping bucket bracket 5, a metering tipping bucket assembly 6, a left tipping bucket tilting angle support assembly 7, a right tipping bucket tilting angle support assembly 8, a reed switch 9, a level bubble 10, a horizontal support plate 11, a support plate horizontal manual adjustment device 18 and a drainage funnel 12; The lower end of the outer tube 2 is connected to the base 3, and the upper end of the outer tube 2 is provided with a rain receiving port assembly 1, which is inserted into the outer tube 2; a support plate horizontal manual adjustment device 18 is connected to the base 3, and a horizontal support plate 11 is connected to the support plate horizontal manual adjustment device 18; a tipping bucket bracket 5 is connected to the horizontal support plate 11, and a water injection funnel 4 is provided at the upper end of the tipping bucket bracket 5, and the water inlet of the water injection funnel 4 is located below the water outlet of the rain receiving port assembly 1; a metering tipping bucket assembly 6 is connected to the tipping bucket bracket 5, and the metering tipping bucket assembly 6 is connected to the tipping bucket bracket 5 The fulcrum swings left and right; the left bucket tilt angle support assembly 7 and the right bucket tilt angle support assembly 8 are connected to the horizontal support plate 11 below the metering bucket assembly 6, and the left bucket tilt angle support assembly 7 and the right bucket tilt angle support assembly 8 are located on both sides of the fulcrum of the bucket bracket 5; a horizontal bubble 10 is connected between the left bucket tilt angle support assembly 7 and the right bucket tilt angle support assembly 8; there is a bucket shaft support on the bucket bracket 5, and the bucket shaft 6-1 is installed on the bucket shaft support; there are two drainage funnels 12 under the two bucket tips of the metering bucket assembly 6.

[0004] Wherein, the metering bucket assembly 6 includes: a bucket shaft 6-1, a middle partition 6-2, a left bucket 6-3, a right bucket 6-4 and a permanent magnet 6-5; there is a middle partition 6-2 between the left bucket 6-3 and the right bucket 6-4, the middle partition 6-2 separates the two buckets into a symmetrical left bucket 6-3 and a right bucket 6-4, and there is a bucket shaft 6-1 on the bottom surface of the bucket at the lower end of the middle partition 6-2; permanent magnets 6-5 are connected to the side walls of the left bucket 6-3 and the right bucket 6-4.

[0005] The left bucket 6-3 and the right bucket 6-4 are water discharge buckets or water storage buckets to each other. When one of the buckets is filled with a certain amount of water, the bucket flips toward the other side with the bucket axis 6-1 as the axis. The one flipped downward is the water discharge bucket, and the one flipped upward is the water storage bucket, and this cycle repeats over and over again. The water receiving port of the bucket serving as the water storage bucket is located below the water outlet of the water injection funnel 4; a permanent magnet 6-5 is installed on the bucket, and a reed switch 9 is installed at a corresponding position on the bucket bracket 5. During the flipping process of the bucket, the permanent magnet 6-5 approaches the reed switch 9 and then leaves immediately, causing the contacts in the reed switch 9 to produce a closing and opening process, so that each time the bucket flips, a signal is generated. The rainfall collection and display instrument and the data processing system display the rainfall through signal collection and accumulation and perform data processing.

[0006] The precipitation enters the water injection funnel 4 from the rain receiving port, and then enters the water storage bucket of the tipping bucket through the water injection funnel 4. When the total overturning torque MF generated by the change of the water body in the water storage bucket is instantaneously greater than the total reversal torque MN generated by factors such as the deadweight of the tipping bucket body, it will instantly overturn and drain all the received rainwater. The tipping bucket on the other side will now become a water storage bucket to take on the water storage function, and the precipitation is measured in this reciprocating manner.

[0007] The principle equation of moment dynamic balance is: MN=MK………………………………(1) (1) Where: MK is the reversal torque of the bucket body (including the bucket shell, the middle partition, the permanent magnet, and the bucket shaft), unit: gram·centimeter (g·cm). MK=FK×LK, FK is the bucket body weight, unit: gram (g), LK is the bucket body arm length, unit: centimeter (cm); MF=MS…………………………(2) (2) In the formula: MS is the dynamic moment generated by the weight of the water in the water storage tank. Its magnitude varies with the total amount of water stored and the outward displacement of the center of gravity of the water body. The unit is gram·centimeter (g·cm). MS=FS×LS, FS is the weight of the water body, in grams (g), LS is the length of the water body force arm, in centimeters (cm); In actual use, the tipping bucket rain gauge is often installed on the pole. Due to the settlement of the foundation or the deformation of the pole, in the absence of automatic horizontal detection, and if the maintenance personnel fail to find it in time and adjust the tipping bucket rain gauge back to a horizontal state through the support plate manual horizontal adjustment device 18, the tipping bucket rain gauge will be in an overall tilted state, destroying the moment dynamic balance. The bucket arm length (LK) and the water arm length (LS) in the moment dynamic balance principle equation have changed, which greatly affects the accuracy and reliability of the rain gauge. Severe loss of balance will also cause the water to overflow from the tipping bucket, resulting in measurement failure.

[0008] It is often difficult to level the tipping bucket rain sensor installed on a pole because the pole is high. When a person uses a ladder to adjust it, the ladder will push the pole to tilt. Even if the person goes up and levels the sensor at this moment, the tilt angle of the pole will change after the person comes down. The rain sensor will be working in a tilted state again. The accuracy of the rain sensor will be greatly affected and it will be difficult to reflect the actual rainfall conditions.

[0009] In summary, the disadvantages and shortcomings of the known tipping bucket rain gauge sensor are: 1. Due to the settlement of the foundation or the deformation of the pole, in the absence of automatic level detection, the rain sensor tilts as a whole, destroying the dynamic balance of the moment, which greatly affects the accuracy and reliability of the tipping bucket rain sensor.

[0010] 2. It is often difficult to level the tipping bucket rain sensor installed on a pole, which will greatly affect the accuracy of the rain sensor.

[0011] 3. In order to ensure the accuracy of the tipping bucket rain gauge, it often requires a lot of manpower and financial resources to maintain. In particular, many rain gauges are set up in mountainous areas. Some projects have hundreds or even thousands of rain gauges. Even if multiple people maintain it at the same time, it is difficult to ensure the accuracy of the tipping bucket rain gauge. Summary of the invention

[0012] The task of the present invention is to overcome the shortcomings and deficiencies of the prior art and provide an automatic leveling tipping bucket rain gauge sensor and a control method, that is, to solve the problem of poor measurement accuracy and reliability caused by the existing tipping bucket rain gauge sensor working in a tilted state.

[0013] In order to achieve the above-mentioned purpose, the tipping bucket type rain gauge sensor of the present invention comprises: a rain receiving port assembly, an outer cylinder, a base, a water injection funnel, a tipping bucket bracket, a metering tipping bucket assembly, a left tipping bucket tilting angle support assembly, a right tipping bucket tilting angle support assembly, a reed switch, a horizontal bubble, a horizontal support plate, and a drainage funnel; wherein, the metering tipping bucket assembly comprises: a tipping bucket shaft, a middle partition, a left bucket chamber, a right bucket chamber, and a permanent magnet; It also includes: electronic inclination sensor assembly, electric push rod, universal joint, data acquisition terminal, signal communication unit, signal display control terminal and remote data measurement and control unit (RTU); The electronic inclination sensor assembly is installed on the horizontal support plate, one end of the electric push rod is connected to the horizontal support plate through a universal joint, and the other end of the electric push rod is fixed on the base; The output end of the electronic inclination sensor assembly is connected to the input and output end of the data acquisition terminal; the output end of the data acquisition terminal is connected to the input end of the signal communication unit; the output end of the signal communication unit is simultaneously connected to the input end of the signal display control terminal and the remote data measurement and control unit (RTU).

[0014] The electronic tilt sensor assembly comprises: an electronic tilt sensor, an electronic tilt sensor signal cable and an electronic tilt sensor outer cover; the electronic tilt sensor is fixed inside the electronic tilt sensor outer cover; and the electronic tilt sensor signal cable is connected to the output end of the electronic tilt sensor.

[0015] The number of the electric push rods is two or three; the electric push rods are micro electric push rods with a stroke of 5-50 mm.

[0016] The data acquisition terminal comprises: an electronic inclination sensor signal acquisition circuit, a single-chip microcomputer and an electric push rod control circuit; the electronic inclination sensor signal acquisition circuit is connected to the electronic inclination sensor through an electronic inclination sensor signal cable, the output end of the electronic inclination sensor signal acquisition circuit is connected to the input port of the single-chip microcomputer, and the output port of the single-chip microcomputer is respectively connected to the electric push rod control circuit and the signal communication unit; the output end of the electric push rod control circuit is connected to the electric push rod to control the extension and retraction of the electric push rod.

[0017] The signal communication unit includes: a Bluetooth communication interface module and a remote communication interface module; signal transmission is implemented between the Bluetooth communication interface module and the signal display control terminal to realize short-range wireless communication; signal transmission is implemented between the remote communication interface module and the remote data measurement and control unit (RTU) to realize long-range wireless communication.

[0018] The output signal of the Bluetooth communication interface module is connected to the signal display control terminal, and signal transmission is implemented between the signal display control terminal; the application software APP is installed on the signal display control terminal, and after starting the APP, the data of the electronic inclination sensor can be obtained and displayed on the APP. At the same time, there are several function buttons on the APP. Sending commands can control the level module X up, X down, Y up, Y down, zero point calibration, and one-key leveling functions.

[0019] The remote communication interface module is connected to the remote data measurement and control unit (RTU) for communication. The signal transmission between the remote communication interface module and the remote data measurement and control unit (RTU) transmits the data to the cloud through the remote data measurement and control unit (RTU). The user can use a computer or mobile phone to obtain the level meter data from the cloud, and control the level meter module's X up, X down, Y up, Y down, zero point calibration, and one-key leveling functions.

[0020] The signal display control terminal is a mobile phone or a tablet computer.

[0021] Based on the control method of the automatic leveling tipping bucket rain sensor described above: After the rain sensor is installed, when the power is turned on for the first time or the metering tipping bucket is detected to be overturned, the automatic leveling device starts to work: Step 1: The electronic inclination sensor signal acquisition circuit collects the electrical signal of the electronic inclination sensor through the electronic inclination sensor signal cable; Step 2: The electronic inclination sensor signal acquisition circuit transmits the collected electrical signal to the microcontroller.

[0022] Step 3: The microcontroller calculates the tilt angle of the sensor and the adjustment amount of the electric telescopic rod.

[0023] Step 4: The single chip microcomputer controls the operation of the electric telescopic rod through the electric telescopic rod control circuit.

[0024] Step 5: The electronic inclination sensor signal acquisition circuit acquires the electrical signal of the electronic inclination sensor through the electronic inclination sensor signal cable; Step 6: The electronic inclination sensor signal acquisition circuit transmits the collected electrical signal to the single chip microcomputer.

[0025] Step 7: The microcontroller calculates the tilt angle of the sensor. If the sensor is already in a horizontal state, it stops working and outputs the leveling work log through the signal communication unit; if the sensor is not in a horizontal state, it repeats the above work until the sensor is in a horizontal state.

[0026] Beneficial effect: Due to the adoption of the above technical scheme, when the foundation of the tipping bucket rain sensor sinks or the vertical pole is deformed, the electronic inclination sensor component automatically detects the offset angle of the sensor and transmits the signal of the offset angle to the single-chip microcomputer. The single-chip microcomputer calculates the angle that needs to be adjusted for the tipping bucket rain sensor, and the single-chip microcomputer outputs a control signal to control multiple electric push rods at the same time. Each electric push rod performs a corresponding extension or contraction action until the tipping bucket rain sensor is readjusted to a horizontal state, thereby greatly improving the accuracy and reliability of the sensor.

[0027] It is often difficult to level the tipping bucket rain sensor installed on a vertical pole. With this automatic leveling device, once the tipping bucket rain sensor is installed, the system will automatically identify the tilt angle and level it automatically after power is turned on, effectively avoiding a significant impact on the accuracy of the rain sensor. At the same time, it greatly reduces the difficulty of on-site installation and reduces installation costs.

[0028] In the subsequent use process, the automatic leveling device will adjust the sensor to a horizontal state in time, which greatly reduces the maintenance cost and ensures the accuracy and reliability of the tipping bucket rain gauge. It not only solves the problem of poor measurement accuracy and reliability caused by the existing tipping bucket rain gauge working in a tilted state, but also solves the problem of difficult project maintenance and requiring a lot of manpower and financial resources.

[0029] Advantages: The scheme of the present invention can automatically level the tipping bucket rain sensor. After the rain sensor is installed, when the power is turned on for the first time or the metering tipping bucket is detected to be overturned, the automatic leveling device is automatically started to adjust the tipping bucket rain sensor to a horizontal state, which greatly improves the accuracy and reliability of the sensor; when installing the pole, it solves the problem of difficult leveling on site, which improves the accuracy and reliability of the rain sensor and greatly reduces the difficulty of on-site installation and the installation cost; it reduces the maintenance cost of the rain gauge station and greatly saves manpower and financial resources.

[0030] The invention has a simple structure and is convenient to install and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the present invention.

[0032] Figure 2 This is a structural schematic diagram of Example 2 of the present invention.

[0033] Figure 3 This is a schematic structural diagram of Example 3 of the present invention.

[0034] Figure 4 This is a schematic structural diagram of Example 4 of the present invention.

[0035] Figure 5 This is a control structure diagram of the data acquisition terminal of the present invention.

[0036] Figure 6 It is a structural schematic diagram of the prior art.

[0037] Figure 7 The electrical schematic diagram of the data acquisition terminal and the signal communication unit of the present invention.

[0038] In the figure, 1. rain receiving port assembly; 2. outer cylinder; 3. base; 4. water filling funnel; 5. tipping bucket bracket; 6. metering tipping bucket assembly; 7. left tipping bucket tilt angle support assembly; 8. right tipping bucket tilt angle support assembly; 9. reed switch; 10. level bubble; 11. level support plate; 12. drainage funnel; 13. electronic tilt sensor; 14. electric push rod; 15. universal joint; 16. spring; 17. data acquisition terminal; 18. signal communication unit; 19. signal display control terminal; 20. remote data measurement and control unit (RTU).

[0039] 6-1, tipping shaft; 6-2, middle partition; 6-3, left chamber; 6-4, right chamber; 6-5, permanent magnet.

[0040] 13-1. Electronic inclination sensor; 13-2. Electronic inclination sensor signal cable.

[0041] 17-1. Electronic inclination sensor signal acquisition circuit; 17-2. Single chip microcomputer; 17-3. Electric push rod control circuit.

[0042] 18-1, Bluetooth communication interface module; 18-2, remote communication interface module. DETAILED DESCRIPTION

[0043] Embodiment 1: Figure 1 In the invention, an automatic leveling tipping bucket rain sensor and control method are provided. The tipping bucket rain sensor comprises: a rain receiving port assembly 1, an outer tube 2, a base 3, a water injection funnel 4, a tipping bucket bracket 5, a metering tipping bucket assembly 6, a left tipping bucket tilting angle support assembly 7, a right tipping bucket tilting angle support assembly 8, a reed switch 9, a leveling bubble 10, a leveling support plate 11, and a drainage funnel 12; The lower end of the outer cylinder 2 is connected to the base 3, and the upper end of the outer cylinder 2 is provided with a rain receiving port assembly 1, which is inserted into the outer cylinder 2; the bucket bracket 5 is connected to the horizontal support plate 11, and the upper end of the bucket bracket 5 is provided with a water injection funnel 4, and the water inlet of the water injection funnel 4 is located below the water outlet of the rain receiving port assembly 1; the bucket bracket 5 is connected with a metering bucket assembly 6, and the metering bucket assembly 6 swings left and right with the bucket bracket 5 as a fulcrum; the left bucket tilt angle support assembly 7 and the right bucket tilt angle support assembly 8 are connected to the horizontal support plate 11 below the metering bucket assembly 6, and the left bucket tilt angle support assembly 7 and the right bucket tilt angle support assembly 8 are located on both sides of the fulcrum of the bucket bracket 5; a horizontal bubble 10 is connected between the left bucket tilt angle support assembly 7 and the right bucket tilt angle support assembly 8; the bucket bracket 5 is provided with a bucket shaft support, and the bucket shaft 6-1 is installed on the bucket shaft support; there are two drainage funnels 12 under the two bucket tips of the metering bucket assembly 6.

[0044] Wherein, the metering bucket assembly 6 includes: a bucket shaft 6-1, a middle partition 6-2, a left bucket 6-3, a right bucket 6-4 and a permanent magnet 6-5; there is a middle partition 6-2 between the left bucket 6-3 and the right bucket 6-4, the middle partition 6-2 separates the two buckets into a symmetrical left bucket 6-3 and a right bucket 6-4, and there is a bucket shaft 6-1 on the bottom surface of the bucket at the lower end of the middle partition 6-2; permanent magnets 6-5 are connected to the side walls of the left bucket 6-3 and the right bucket 6-4.

[0045] The left bucket 6-3 and the right bucket 6-4 are water discharge buckets or water storage buckets to each other. When one of the buckets is filled with a certain amount of water, the bucket flips toward the other side with the bucket axis 6-1 as the axis. The one flipped downward is the water discharge bucket, and the one flipped upward is the water storage bucket, and this cycle repeats over and over again. The water receiving port of the bucket serving as the water storage bucket is located below the water outlet of the water injection funnel 4; a permanent magnet 6-5 is installed on the bucket, and a reed switch 9 is installed at a corresponding position on the bucket bracket 5. During the flipping process of the bucket, the permanent magnet 6-5 approaches the reed switch 9 and then leaves immediately, causing the contacts in the reed switch 9 to produce a closing and opening process, so that each time the bucket flips, a signal is generated. The rainfall collection and display instrument and the data processing system display the rainfall through signal collection and accumulation and perform data processing.

[0046] The precipitation enters the water injection funnel 4 from the rain receiving port, and then enters the water storage bucket of the tipping bucket through the water injection funnel 4. When the total overturning torque MF generated by the change of the water body in the water storage bucket is instantaneously greater than the total reversal torque MN generated by factors such as the deadweight of the tipping bucket body, it will instantly overturn and drain all the received rainwater. The tipping bucket on the other side will now become a water storage bucket to take on the water storage function, and the precipitation is measured in this reciprocating manner.

[0047] It also includes: an electronic tilt sensor assembly 13, an electric push rod 14, a universal joint 15, a data acquisition terminal 17, a signal communication unit 18, a signal display control terminal 19 and a remote data measurement and control unit (RTU) 20; The electronic inclination sensor assembly 13 is mounted on the horizontal support plate 11, one end of the electric push rod 14 is connected to the horizontal support plate 11 through a universal joint 15, and the other end of the electric push rod 14 is fixed on the base 3; The output end of the electronic inclination sensor assembly 13 is connected to the input and output ends of the data acquisition terminal 17; the output end of the data acquisition terminal 17 is connected to the input end of the signal communication unit 18; the output end of the signal communication unit 18 is simultaneously connected to the input ends of the signal display control terminal 19 and the remote data measurement and control unit (RTU) 20.

[0048] The universal joint 15 is a closed universal joint, which is composed of a ball head and a ball socket. The ball head is located in the ball socket. Under the action of external force, the ball head and the ball socket cannot be separated.

[0049] The electronic inclination sensor assembly 13 comprises: an electronic inclination sensor 13-1, an electronic inclination sensor signal cable 13-2 and an electronic inclination sensor cover; the electronic inclination sensor 13-1 is fixed inside the electronic inclination sensor cover; the electronic inclination sensor signal cable 13-2 is connected to the output end of the electronic inclination sensor 13-1.

[0050] There are three electric push rods 14; the electric push rods 14 are miniature electric push rods with a stroke of 5-50 mm.

[0051] The data acquisition terminal 17 includes: an electronic inclination sensor signal acquisition circuit 17-1, a single-chip microcomputer 17-2 and an electric push rod control circuit 17-3; the electronic inclination sensor signal acquisition circuit 17-1 is connected to the electronic inclination sensor 13-1 through an electronic inclination sensor signal cable 13-2, the output end of the electronic inclination sensor signal acquisition circuit 17-1 is connected to the input port of the single-chip microcomputer 17-2, and the output port of the single-chip microcomputer 17-2 is respectively connected to the electric push rod control circuit 17-3 and the signal communication unit 18.

[0052] The output end of the electric push rod control circuit 17 - 3 is connected to the electric push rod 14 to control the extension and retraction of the electric push rod 14 .

[0053] The signal communication unit 18 includes: a Bluetooth communication interface module 18-1 and a remote communication interface module 18-2; the Bluetooth communication interface module 18-1 realizes short-range wireless communication; the remote communication interface module 18-2 realizes long-range wireless communication. The output signal of the Bluetooth communication interface module 18-1 is connected to the signal display control terminal 19 for signal transmission; the application software APP is installed on the signal display control terminal 19, and after starting the APP, the data of the electronic inclination sensor 13-1 can be obtained and displayed on the APP. At the same time, there are several function buttons on the APP, and commands can be sent to control the level module X up, X down, Y up, Y down, zero point calibration, and one-key leveling functions; The remote communication interface module 18-2 is connected to the remote data measurement and control unit (RTU) 20 for communication. The signal transmission between the remote communication interface module 18-2 and the remote data measurement and control unit (RTU) 20 transmits the data to the cloud through the remote data measurement and control unit (RTU) 20. The user can use a computer or mobile phone to obtain the level meter data from the cloud, and control the level meter module X up, X down, Y up, Y down, zero point calibration, and one-key leveling functions.

[0054] The signal display control terminal 19 is a mobile phone.

[0055] Based on the control method of the automatic leveling tipping bucket rain sensor described above: After the rain sensor is installed, when the power is turned on for the first time or the metering tipping bucket is detected to be overturned, the automatic leveling device starts to work: Step 1: The electronic inclination sensor signal acquisition circuit 17-1 acquires the electrical signal of the electronic inclination sensor 13-1 through the electronic inclination sensor signal cable 13-2; Step 2: The electronic inclination sensor signal acquisition circuit 17 - 1 transmits the acquired electrical signal to the single chip microcomputer 17 - 2 .

[0056] Step 3: The single chip computer 17 - 2 calculates the tilt angle of the sensor and calculates the adjustment amount of the electric telescopic rod 14 .

[0057] Step 4: The single chip microcomputer 17 - 2 controls the operation of the electric telescopic rod 14 through the electric telescopic rod control circuit 17 - 3 .

[0058] Step 5: The electronic inclination sensor signal acquisition circuit 17-1 acquires the electrical signal of the electronic inclination sensor 13-1 through the electronic inclination sensor signal cable 13-2; Step 6: The electronic inclination sensor signal acquisition circuit 17 - 1 transmits the acquired electrical signal to the single chip microcomputer 17 - 2 .

[0059] Step 7: The single chip computer 17-2 calculates the tilt angle of the sensor. If the sensor is already in a horizontal state, it stops working and outputs the leveling work log through the signal communication unit 18; if the sensor is not in a horizontal state, it repeats the above work until the sensor is in a horizontal state.

[0060] Example 2: Figure 2 In the embodiment, there are two electric push rods 14. The two electric push rods 14 and a fixed support rod are distributed between the horizontal support plate 11 and the base 3. The upper ends of the two electric push rods 14 and the fixed support rod are connected with a universal joint 15; and are connected to the horizontal support plate 11 through the universal joint 15.

[0061] The universal joint 15 is an open universal joint, which consists of a ball head and a ball socket. Under the action of external force, the ball head and the ball socket can be separated. A spring 16 is connected between the horizontal support plate 11 and the base 3, and the spring 16 ensures that the ball head and the ball socket cannot be separated. At the same time, the universal steering of the ball head and the ball socket is also ensured.

[0062] There are at least three springs 16 .

[0063] The signal display control terminal 19 is a tablet computer.

[0064] The rest is the same as Example 1.

[0065] Example 3: Figure 3 In the figure, there are two electric push rods 14; the two electric push rods 14 and a fixed support rod are distributed between the horizontal support plate 11 and the base 3, and the upper ends of the two electric push rods 14 and the fixed support rod are connected with a universal joint 15; and are connected to the horizontal support plate 11 through the universal joint 15.

[0066] The universal joint 15 is a closed universal joint, which is composed of a ball head and a ball socket. The ball head is located in the ball socket. Under the action of external force, the ball head and the ball socket cannot be separated.

[0067] The rest is the same as Example 1.

[0068] Example 4: Figure 4 In the embodiment, there are three electric push rods 14; the electric push rods 14 are miniature electric push rods with a stroke of 5-50 mm.

[0069] The universal joint 15 is an open universal joint, which consists of a ball head and a ball socket. Under the action of external force, the ball head and the ball socket can be separated. A spring 16 is connected between the horizontal support plate 11 and the base 3, and the spring 16 ensures that the ball head and the ball socket cannot be separated. At the same time, the universal steering of the ball head and the ball socket is also ensured.

[0070] There are at least three springs 16 .

[0071] The rest is the same as Example 1.

Claims

1. An automatic leveling tipping bucket rain sensor, comprising: A rain receiving port assembly, an outer cylinder, a base, a water injection funnel, a tipping bucket bracket, a metering tipping bucket assembly, a left tipping bucket tilting angle support assembly, a right tipping bucket tilting angle support assembly, a reed switch, a horizontal bubble, a horizontal support plate, and a drainage funnel; wherein the metering tipping bucket assembly includes: a tipping bucket shaft, a middle partition, a left bucket chamber, a right bucket chamber, and a permanent magnet; Its characteristics are: it also includes: an electronic inclination sensor assembly, an electric push rod, a universal joint, a data acquisition terminal, a signal communication unit, a signal display control terminal and a remote data measurement and control unit (RTU); The electronic inclination sensor assembly is installed on the horizontal support plate, one end of the electric push rod is connected to the horizontal support plate through a universal joint, and the other end of the electric push rod is fixed on the base; The output end of the electronic inclination sensor assembly is connected to the input and output end of the data acquisition terminal; the output end of the data acquisition terminal is connected to the input end of the signal communication unit; the output end of the signal communication unit is simultaneously connected to the input end of the signal display control terminal and the remote data measurement and control unit (RTU).

2. The automatic leveling tipping bucket rain sensor according to claim 1 is characterized in that: The electronic tilt sensor assembly comprises: an electronic tilt sensor, an electronic tilt sensor signal cable and an electronic tilt sensor outer cover; the electronic tilt sensor is fixed inside the electronic tilt sensor outer cover; and the electronic tilt sensor signal cable is connected to the output end of the electronic tilt sensor.

3. The automatic leveling tipping bucket rain sensor according to claim 1 is characterized in that: The number of the electric push rods is two or three; the electric push rods are micro electric push rods with a stroke of 5-50 mm.

4. The automatic leveling tipping bucket rain sensor according to claim 1, characterized in that: The data acquisition terminal comprises: an electronic inclination sensor signal acquisition circuit, a single-chip microcomputer and an electric push rod control circuit; the electronic inclination sensor signal acquisition circuit is connected to the electronic inclination sensor through an electronic inclination sensor signal cable, the output end of the electronic inclination sensor signal acquisition circuit is connected to the input port of the single-chip microcomputer, and the output port of the single-chip microcomputer is respectively connected to the electric push rod control circuit and the signal communication unit; the output end of the electric push rod control circuit is connected to the electric push rod to control the extension and retraction of the electric push rod.

5. The automatic leveling tipping bucket rain sensor according to claim 1, characterized in that: The signal communication unit includes: a Bluetooth communication interface module and a remote communication interface module; signal transmission is implemented between the Bluetooth communication interface module and the signal display control terminal to realize short-range wireless communication; signal transmission is implemented between the remote communication interface module and the remote data measurement and control unit (RTU) to realize long-range wireless communication.

6. The automatic leveling tipping bucket rain sensor according to claim 5, characterized in that: The output signal of the Bluetooth communication interface module is connected to the signal display control terminal, and signal transmission is implemented between the signal display control terminal; the application software APP is installed on the signal display control terminal, and after starting the APP, the data of the electronic inclination sensor can be obtained and displayed on the APP. At the same time, there are several function buttons on the APP. Sending commands can control the level module X up, X down, Y up, Y down, zero point calibration, and one-key leveling functions.

7. The automatic leveling tipping bucket rain sensor according to claim 5 is characterized in that: The communication interface module is connected to the remote data measurement and control unit (RTU) for communication. The signal transmission between the remote communication interface module and the remote data measurement and control unit (RTU) transmits the data to the cloud through the remote data measurement and control unit (RTU). The user can use a computer or mobile phone to obtain the level meter data from the cloud, and control the level meter module's X up, X down, Y up, Y down, zero point calibration, and one-key leveling functions.

8. The automatic leveling tipping bucket rain sensor according to claim 1, characterized in that: The signal display control terminal is a mobile phone or tablet computer.

9. A control method for an automatic leveling tipping bucket rain sensor according to claim 1, characterized in that: After the rain sensor is installed, the automatic leveling device starts working when the power is turned on for the first time or when the metering bucket is detected to be overturned: Step 1: The electronic inclination sensor signal acquisition circuit collects the electrical signal of the electronic inclination sensor through the electronic inclination sensor signal cable; Step 2: The electronic inclination sensor signal acquisition circuit transmits the collected electrical signal to the single chip microcomputer; Step 3: The single chip microcomputer calculates the tilt angle of the sensor and the adjustment amount of the electric telescopic rod; Step 4: The single chip microcomputer controls the operation of the electric telescopic rod through the electric telescopic rod control circuit; Step 5: The electronic inclination sensor signal acquisition circuit acquires the electrical signal of the electronic inclination sensor through the electronic inclination sensor signal cable; Step 6: The electronic inclination sensor signal acquisition circuit transmits the collected electrical signal to the single chip microcomputer; Step 7: The microcontroller calculates the tilt angle of the sensor. If the sensor is already in a horizontal state, it stops working and outputs the leveling work log through the signal communication unit; if the sensor is not in a horizontal state, it repeats the above work until the sensor is in a horizontal state.

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