Power grid iron tower ground pressure monitoring system

Abstract

The invention discloses a power grid iron tower ground pressure monitoring system, and aims to solve the problems that in the prior art, professional personnel are frequently dispatched to a site for monitoring, so that the labor cost and the traffic cost are increased; real-time monitoring cannot be achieved, and problems are difficult to find in time. And omissions or errors possibly exist in manually recorded data, so that comprehensive and continuous data acquisition is difficult to realize. And historical data is difficult to accumulate systematically by manual inspection, and long-term trend analysis is not facilitated. The invention provides the power grid iron tower ground pressure monitoring system. Comprising pressure sensors arranged on four feet of a power grid and used for measuring pressure signals of the ground; the isolation circuit is connected with the pressure sensor and is used for reducing external interference on an output signal of the pressure sensor; and the data acquisition module is connected with the isolation circuit and is used for integrating output signals of the pressure sensor and generating pressure monitoring data.

Description

Technical Field

[0001] The invention belongs to the field of power grid equipment monitoring and relates to a ground pressure monitoring system for a power grid iron tower. Background Art

[0002] Grid towers are usually large structures made of steel or other metal materials. They bear their own weight as well as the weight of cables and insulators hanging on them. Over time, these towers may be affected by natural factors such as corrosion, wind, earthquakes, frost, etc., causing their structural strength to deteriorate. Pressure monitoring can detect structural problems in time and take measures.

[0003] In the prior art, construction workers regularly visit the tower to monitor the pressure of the tower and determine potential problems with the tower.

[0004] The prior art has the following technical problems:

[0005] 1. Frequent dispatch of professionals to on-site monitoring will increase labor costs and transportation costs.

[0006] 2. Due to the long inspection cycle, important abnormal situations may be missed between two inspections, and real-time monitoring cannot be achieved, making it difficult to find problems in time. Even if a problem is found, the maintenance team may not be able to respond quickly due to the delay in information transmission, thus delaying the resolution of the problem.

[0007] 3. Manually recorded data may contain omissions or errors, making it difficult to achieve comprehensive and continuous data collection. In addition, manual inspections are difficult to systematically accumulate historical data, which is not conducive to long-term trend analysis and prediction of possible problems in the future. Summary of the invention

[0008] In view of the above-mentioned existing technologies, frequently dispatching professionals to the site for monitoring will increase labor costs and transportation costs; due to the long inspection cycle, important abnormal situations may be missed between two inspections, and real-time monitoring cannot be achieved, making it difficult to find problems in time. Even if a problem is found, the maintenance team may not be able to respond quickly due to the delay in information transmission; and there may be omissions or errors in the manually recorded data, making it difficult to achieve comprehensive and continuous data collection. In addition, manual inspections are difficult to systematically accumulate historical data, which is not conducive to long-term trend analysis. The present invention provides a ground pressure monitoring system for power grid towers.

[0009] The technical solution adopted by the present invention is as follows:

[0010] A power grid tower ground pressure monitoring system, comprising:

[0011] Pressure sensors are installed on the four legs of the power grid to measure the pressure signal on the ground;

[0012] an isolation circuit, connected to the pressure sensor, for reducing external interference with an output signal of the pressure sensor;

[0013] The data acquisition module is connected to the isolation circuit and is used to integrate the output signal of the pressure sensor to generate pressure monitoring data.

[0014] Furthermore, the above also includes:

[0015] A wireless transmission module is connected to the data acquisition module and is used to send the pressure monitoring data to a remote server by wireless transmission; wherein the remote server is used to view, analyze and store the pressure monitoring data.

[0016] Furthermore, the above also includes:

[0017] A storage battery, connected to the data acquisition module, and used to provide power to the data acquisition module;

[0018] The protection circuit is connected between the storage battery and the data acquisition module and is used to control the amount of electric energy.

[0019] Furthermore, the above also includes:

[0020] The solar panel is connected to the storage battery and is used for converting solar energy into electrical energy and storing the electrical energy in the storage battery.

[0021] Furthermore, there are four pressure sensors mentioned above, which are respectively located on four legs of the power grid and 1m to 2m underground.

[0022] Furthermore, the data processing module includes:

[0023] A digital-to-analog conversion unit, connected to the pressure sensor, and configured to convert the pressure signal from an analog signal to a digital signal;

[0024] An STM32 microcontroller unit is connected to the digital-to-analog conversion unit and is used to receive and process the pressure signal in the form of a digital signal to obtain pressure monitoring data;

[0025] A clock unit, connected to the STM32 microcontroller unit, for recording the sampling time of the pressure monitoring data in real time;

[0026] A storage unit is connected to the STM32 microcontroller unit and is used to store the pressure monitoring data.

[0027] Furthermore, the above-mentioned STM32 microcontroller unit includes: an STM32 main control chip, a reset circuit and a crystal oscillator circuit;

[0028] The reset circuit includes a resistor R3, a capacitor C15 and a manual reset switch SW1; one end of the resistor R3 is connected to a 3.3V power supply, the other end of the resistor R3 is connected to one end of the capacitor C15, and is connected to the NRST pin of the STM32 main control chip, the other end of the capacitor C15 is grounded, the NRST pin of the STM32 main control chip is also connected to one end of the manual reset switch SW1, and the other end of the manual reset switch SW1 is grounded;

[0029] The crystal oscillator circuit includes a crystal oscillator Y1, a resistor R5, a capacitor C16 and a capacitor C17; pin 1 of the crystal oscillator Y1 is connected to one end of the capacitor C16, the other end of the capacitor C16 is connected to pin 2 of the crystal oscillator Y1 and is grounded, pin 3 of the body oscillator Y1 is connected to one end of the capacitor C17, the other end of the capacitor C17 is connected to pin 4 of the crystal oscillator Y1 and is grounded, pin 1 of the crystal oscillator Y1 is also connected to one end of the resistor R5 and is connected to the OSC_IN pin of the STM32 main control chip, and the other end of the resistor R5 is connected to pin 3 of the crystal oscillator Y1 and is connected to the OSC_OUT pin of the STM32 main control chip.

[0030] Furthermore, the protection circuit includes: a DC-DC converter, a rectifier circuit, a first filter circuit, a second filter circuit, a third filter circuit, a fourth filter circuit, a field effect transistor M1, a feedback circuit, a current limiting circuit, a resistor R1, a resistor R2, a diode D3, a diode D4, and an inductor L;

[0031] The VCC pin of the DC-DC converter is connected to the input power supply, and is connected to one end of the first filter circuit and one end of the resistor R1. The other end of the first filter circuit is grounded. The other end of the resistor R1 is connected to the diode D3 and the diode D4. The other end of the diode D3 is connected to the DONE pin of the DC-DC converter. The other end of the diode D4 is connected to the CHRG pin of the DC-DC converter. The VG pin of the DC-DC converter is connected to one end of the second filter circuit. The other end of the second filter circuit is connected to the source of the field effect transistor M1. The gate of the field effect transistor M1 is connected to the DRV pin of the DC-DC converter. The drain of the field effect transistor M1 is connected to one end of the inductor L. A rectifier circuit is provided between the field effect transistor M1 and the inductor L, the other end of the inductor L is connected to one end of the current limiting circuit, the other end of the current limiting circuit is connected to one end of the feedback circuit, the other end of the feedback circuit is connected to the FB pin of the DC-DC converter, the CSP pin of the DC-DC converter is connected between the inductor L and the current limiting circuit, the BAT pin of the DC-DC converter is connected between the current limiting circuit and the feedback circuit and is connected to the third filter circuit, the COM pin of the DC-DC converter is connected to one end of the resistor R2, the other end of the resistor R2 is connected to one end of the fourth filter circuit, the other end of the fourth filter circuit is grounded, and the GND pin of the DC-DC converter is grounded.

[0032] Furthermore, the above also includes:

[0033] A display is connected to the data acquisition module and is used to view the pressure monitoring data.

[0034] Furthermore, the above also includes:

[0035] A keyboard is connected to the data acquisition module and is used for data browsing, calibration, data transmission, mode selection, unit selection, tolerance selection and factory reset operations.

[0036] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0037] 1. The present invention can monitor the pressure changes on the ground in real time by installing pressure sensors at the four feet of the iron tower, reducing the need for manual intervention and the possibility of human error. By using a wireless transmission module, the monitoring data can be sent to a remote server in real time, making it convenient for managers to view data anytime and anywhere, timely discover potential safety hazards, and improve work efficiency.

[0038] 2. The present invention reduces external interference through an isolation circuit, thereby ensuring the accuracy of the output signal of the pressure sensor; at the same time, the digital-to-analog converter converts the analog signal into a digital signal, which is convenient for microcontroller processing and improves the reliability and readability of the data. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative work, among which:

[0040] Figure 1 It is a structural schematic diagram of a power grid tower ground pressure monitoring system provided according to an embodiment of the present invention;

[0041] Figure 2 It is a block diagram of a data processing module of a power grid tower ground pressure monitoring system provided according to an embodiment of the present invention;

[0042] Figure 3 It is a schematic diagram of an STM32 microcontroller unit of a data processing module of a power grid tower ground pressure monitoring system provided by an embodiment of the present invention;

[0043] Figure 4 1. It is a schematic diagram of a reset circuit of a data processing module of a ground pressure monitoring system of a power grid tower provided by an embodiment of the present invention;

[0044] Figure 5 It is a schematic diagram of a crystal oscillator circuit of a data processing module of a ground pressure monitoring system of a power grid tower provided by an embodiment of the present invention;

[0045] Figure 6 It is a schematic diagram of a protection circuit of a data processing module of a ground pressure monitoring system of a power grid tower provided by an embodiment of the present invention;

[0046] Figure 7 It is a schematic diagram of the main interface of a data processing module of a power grid tower ground pressure monitoring system provided by an embodiment of the present invention;

[0047] Figure 8 It is a supplementary schematic diagram of the main interface of a data processing module of a power grid tower ground pressure monitoring system provided according to an embodiment of the present invention. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0049] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0050] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0051] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0052] like Figure 1 As shown, an embodiment of the present invention provides a power grid tower ground pressure monitoring system, comprising:

[0053] Pressure sensors are installed on the four legs of the power grid to measure the pressure signal on the ground;

[0054] an isolation circuit, connected to the pressure sensor, for reducing external interference with an output signal of the pressure sensor;

[0055] The data acquisition module is connected to the isolation circuit and is used to integrate the output signal of the pressure sensor to generate pressure monitoring data.

[0056] Optionally, also include:

[0057] A wireless transmission module is connected to the data acquisition module and is used to send the pressure monitoring data to a remote server by wireless transmission; wherein the remote server is used to view, analyze and store the pressure monitoring data.

[0058] In this embodiment, the remote server displays the real-time pressure monitoring data in the form of a data curve and a data list, wherein the horizontal axis of the data curve is time, and the vertical axis is the pressure monitoring data.

[0059] Optionally, also include:

[0060] A storage battery, connected to the data acquisition module, and used to provide power to the data acquisition module;

[0061] The protection circuit is connected between the storage battery and the data acquisition module and is used to control the amount of electric energy.

[0062] In this embodiment, the storage battery is selected from two rechargeable lithium batteries connected in series, with a battery voltage of 7.4V, a capacity of 2800mV, built-in charge and discharge protection, and has mortgage, overcurrent, short circuit, and temperature control protection. The battery size is: 66*36*20 (mm).

[0063] Optionally, also include:

[0064] The solar panel is connected to the storage battery and is used for converting solar energy into electrical energy and storing the electrical energy in the storage battery.

[0065] Optionally, there are four pressure sensors, which are located on four legs of the power grid and 1m to 2m underground.

[0066] In the embodiment, it is located 1.5 m underground.

[0067] Optionally, the data processing module includes:

[0068] A digital-to-analog conversion unit, connected to the pressure sensor, and configured to convert the pressure signal from an analog signal to a digital signal;

[0069] An STM32 microcontroller unit is connected to the digital-to-analog conversion unit and is used to receive and process the pressure signal in the form of a digital signal to obtain pressure monitoring data;

[0070] A clock unit, connected to the STM32 microcontroller unit, for recording the sampling time of the pressure monitoring data in real time;

[0071] A storage unit is connected to the STM32 microcontroller unit and is used to store the pressure monitoring data.

[0072] In this embodiment, Figure 2As shown, a detailed block diagram of the data processing module is provided, including:

[0073] AC-DC power supply: AC-DC power converter, used to convert AC power into a stable DC power supply system.

[0074] Charge and discharge management circuit: responsible for the charge and discharge management of lithium batteries to ensure the safe use of batteries.

[0075] LDO-3.3V: Low dropout voltage regulator, which converts the battery voltage into a stable voltage of 3.3 volts for use in subsequent circuits.

[0076] STM32 microcontroller: The microcontroller from STMicroelectronics is the core of the entire system, used to process data and control other components.

[0077] ADC ADS1235: Analog-to-digital converter, used to convert analog signals into digital signals for easy processing by the microcontroller.

[0078] RTC PCF8563T: Real-time clock chip, used to provide accurate time information.

[0079] OLED display: Organic light-emitting diode display, used to display system information.

[0080] PCF8563T: Real-time clock chip, used to provide accurate time information.

[0081] EEPROM AT24C128: Non-volatile memory used to store system configuration and other important data.

[0082] UART: Universal Asynchronous Receiver / Transmitter, used for serial communication with other devices.

[0083] RS485: A commonly used industrial fieldbus communication protocol used for long-distance, multi-node communications.

[0084] Button 5: used for human-computer interaction and to issue instructions to the system.

[0085] PC (GX16-3): May be an interface to a computer or other device for data exchange.

[0086] Sensor 1 (GX16-4) and Sensor 2 (GX16-4): two different sensors, connected to the system through the GX16-4 interface respectively.

[0087] FLASH: Flash memory, used to store programs and data.

[0088] In this embodiment, the single chip microcomputer configuration and peripheral design of the data processing module are shown in Table 1:

[0089]

[0090] Table 1

[0091] Among them, the microcontroller pin definition is shown in Table 2:

[0092]

[0093] Table 2

[0094] Optionally, the STM32 microcontroller unit includes: an STM32 main control chip, a reset circuit and a crystal oscillator circuit;

[0095] The reset circuit includes a resistor R3, a capacitor C15 and a manual reset switch SW1; one end of the resistor R3 is connected to a 3.3V power supply, the other end of the resistor R3 is connected to one end of the capacitor C15, and is connected to the NRST pin of the STM32 main control chip, the other end of the capacitor C15 is grounded, the NRST pin of the STM32 main control chip is also connected to one end of the manual reset switch SW1, and the other end of the manual reset switch SW1 is grounded;

[0096] The crystal oscillator circuit includes a crystal oscillator Y1, a resistor R5, a capacitor C16 and a capacitor C17; pin 1 of the crystal oscillator Y1 is connected to one end of the capacitor C16, the other end of the capacitor C16 is connected to pin 2 of the crystal oscillator Y1 and is grounded, pin 3 of the body oscillator Y1 is connected to one end of the capacitor C17, the other end of the capacitor C17 is connected to pin 4 of the crystal oscillator Y1 and is grounded, pin 1 of the crystal oscillator Y1 is also connected to one end of the resistor R5 and is connected to the OSC_IN pin of the STM32 main control chip, and the other end of the resistor R5 is connected to pin 3 of the crystal oscillator Y1 and is connected to the OSC_OUT pin of the STM32 main control chip.

[0097] like Figure 3-Figure 5 As shown, in this embodiment, the size of the resistor R3 is 10KΩ, and the size of the capacitor C15 is 100nF.

[0098] Optionally, the protection circuit includes: a DC-DC converter, a rectifier circuit, a first filter circuit, a second filter circuit, a third filter circuit, a fourth filter circuit, a field effect transistor M1, a feedback circuit, a current limiting circuit, a resistor R1, a resistor R2, a diode D3, a diode D4, and an inductor L;

[0099] The VCC pin of the DC-DC converter is connected to the input power supply, and is connected to one end of the first filter circuit and one end of the resistor R1. The other end of the first filter circuit is grounded. The other end of the resistor R1 is connected to the diode D3 and the diode D4. The other end of the diode D3 is connected to the DONE pin of the DC-DC converter. The other end of the diode D4 is connected to the CHRG pin of the DC-DC converter. The VG pin of the DC-DC converter is connected to one end of the second filter circuit. The other end of the second filter circuit is connected to the source of the field effect transistor M1. The gate of the field effect transistor M1 is connected to the DRV pin of the DC-DC converter. The drain of the field effect transistor M1 is connected to one end of the inductor L. A rectifier circuit is provided between the field effect transistor M1 and the inductor L, the other end of the inductor L is connected to one end of the current limiting circuit, the other end of the current limiting circuit is connected to one end of the feedback circuit, the other end of the feedback circuit is connected to the FB pin of the DC-DC converter, the CSP pin of the DC-DC converter is connected between the inductor L and the current limiting circuit, the BAT pin of the DC-DC converter is connected between the current limiting circuit and the feedback circuit and is connected to the third filter circuit, the COM pin of the DC-DC converter is connected to one end of the resistor R2, the other end of the resistor R2 is connected to one end of the fourth filter circuit, the other end of the fourth filter circuit is grounded, and the GND pin of the DC-DC converter is grounded.

[0100] like Figure 6 As shown, in this embodiment, the DC-DC converter uses a CN3762 chip, the first filter circuit is a capacitor C1, the second filter circuit is a capacitor C2, the third filter circuit is a capacitor C3, the fourth filter circuit is a capacitor C4, and the rectifier circuit includes a diode D1 and a diode D2, the anode of the diode D1 is connected to the drain of the field effect transistor M1, the cathode of the diode D1 is connected to the inductor L, the cathode of the diode D2 is connected between the diode D1 and the inductor L, and the anode of the diode D2 is grounded. The feedback circuit is a resistor Rcs, and the current limiting circuit is a resistor Rx.

[0101] In this embodiment, the circuit further includes a protection circuit BAT, one end of the protection circuit BAT is connected between the capacitor C3 and the resistor Rcs, and the other end of the protection circuit BAT is grounded.

[0102] In this embodiment, the size of the capacitor C2 is 100 nF, and the size of the capacitor C4 is 220 nF.

[0103] Optionally, also include:

[0104] A display is connected to the data acquisition module and is used to view the pressure monitoring data.

[0105] In this embodiment, the display uses a 2.4-inch monochrome screen, and its specific parameters are as follows:

[0106] A. Resolution: 128*64;

[0107] B. Module size: 62.1*53.3*9mm;

[0108] C. Interface: four-wire SPI (FPC);

[0109] D. Working voltage: 3.3V;

[0110] E. Viewing angle: greater than 160°;

[0111] F. Contrast ratio: >10000:1;

[0112] G. Working temperature: -40℃~+85℃;

[0113] Optionally, also include:

[0114] A keyboard is connected to the data acquisition module and is used for data browsing, calibration, data transmission, mode selection, unit selection, tolerance selection and factory reset operations.

[0115] In this embodiment, the keys of the keyboard adopt OFF-OFF light touch keys, and the parameters are as follows:

[0116] A. Single pole single throw;

[0117] B. Contact rated current: 50mA / 12V;

[0118] C.Key travel: 1.3mm±0.2mm;

[0119] D. Pressing force: 3.5N±1.0N;

[0120] E.Size: 6.0*6.1*5mm;

[0121] The following describes the data management of this application in detail through user interaction:

[0122] In this embodiment, the keyboard includes a “SAVE key”, an “OK key”, a “return key”, an “up key”, a “down key”, a “left key” and a “right key”.

[0123] First start the system, the monitor displays the power-on interface, press any key on the keyboard to enter the data measurement interface (real-time measurement mode and unit are preset), and the data measurement interface dynamically refreshes the two-way measurement values.

[0124] Click the "SAVE button" to save the data measured 2 seconds ago, and enter the browsing interface through the data browsing option on the main interface. A maximum of 2000 records can be saved. If more than 2000 records are saved, the numbering will start from 0001 and overwrite the current data in sequence. The data information includes real-time time, number, measurement value, and unit. Press and hold the "OK button" for more than two seconds to enter the main interface. The main interface is as follows: Figure 7 and Figure 8 shown.

[0125] In the main interface, use the "up key" and "down key" to select the corresponding function option, and then click the "OK key" to enter the corresponding option interface. Click the "return key" to return to the main interface. Press and hold the "OK key" and "return key" for more than two seconds at the same time to delete all data.

[0126] In this embodiment, the function options of the main interface include data browsing, calibration, data transmission, mode selection, unit selection, tolerance selection and restoring factory settings.

[0127] In the calibration interface, use the "left key" and "right key" to select a digit (4 digits in total), use the "up key" and "down key" to set the value (0 to 9), click the "OK key" to confirm, and click the "OK key" again (after an interval of more than 500ms) to start calibration. After the calibration is completed, the calibration completion will be displayed on the display.

[0128] In the data transmission interface, use the "up key" and "down key" to determine the start or end of the filling item (the selected item is reversed), use the "left key" and "right key" to select the start and end digits (a total of 4 digits, the selected item is reversed), use the "up key" and "down key" to set the value (range 0 to 9), click the "OK key" to confirm, select upload and click the "OK key" to start uploading data, and after the upload is completed, the upload success will be displayed on the display.

[0129] In the model selection interface, there are three modes, including tracking mode, first peak and automatic peak. Only one of the three measurement modes can exist at the same time. Click the "up key" and "down key" to confirm the mode item (the selected item is reversed), use the "left key" and "right key" to select the on / off of the mode (when one of the items is on, the other two are automatically off), set the switch with the "up key" and "down key", and click the "OK key" to confirm.

[0130] When the first peak is turned on, jump to the first peak interface, use the "left key" and "right key" to select the digit of the decline rate (2 digits in total, the selected digit is reversed, and the range is 00 to 99), and use the "up key" and "down key" to set the value of each digit (range 0 to 9). After setting, click the "OK key" to confirm, and click the "return key" to exit the interface.

[0131] When the automatic peak value is turned on, jump to the automatic peak value interface, use the "left key" and "right key" to select the digit of the time interval (3 digits in total, the selected digit is reversed, and the range is 000 to 999), and use the "up key" and "down key" to set the value of each digit (range 0 to 9). After setting, click the "OK key" to confirm, and click the "return key" to exit the interface.

[0132] In the unit selection interface, you can choose two units (Kg and N), click the "up key" and "down key" to confirm the unit item (the selected item is reversed), use the "left key" and "right key" to select the unit on / off (when one is on, the other is automatically off), use the "up key" and "down key" to set the unit, click the "OK key" to confirm, and click the "return key" to exit this interface.

[0133] In the tolerance selection interface, you can set the upper and lower limits of the tolerance. The upper and lower limits can only be set when the tolerance is on. Use the "up key" and "down key" to determine whether the tolerance is on or off. Click the "OK key" to confirm and jump to the upper limit. Click the "left key" and "right key" to select the digit of the upper limit (4 digits in total, the selected digit is reversed, and the range is 0000~9999). Use the "up key" and "down key" to set the value of each digit (range 0~9). After setting, click the "OK key" to jump to the lower limit. Click the "left key" and "right key" to select the digit of the lower limit (4 digits in total, the selected digit is reversed, and the range is 0000~9999). Use the "up key" and "down key" to set the value of each digit (range 0~9). After setting, click the "OK key" to confirm, and click the "return key" to exit this interface.

[0134] On the factory reset interface, press and hold the "OK button" for more than two seconds. A factory reset interface will pop up. Click the "left button" and "right button" to select whether to reset the factory settings. Click the "OK button" to confirm. Click the "return button" to exit the interface.

[0135] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions and improvements made by any technician familiar with the field within the spirit and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A power grid tower ground pressure monitoring system, characterized in that: include: Pressure sensors are installed on the four legs of the power grid to measure the pressure signal on the ground; an isolation circuit, connected to the pressure sensor, for reducing external interference with an output signal of the pressure sensor; The data acquisition module is connected to the isolation circuit and is used to integrate the output signal of the pressure sensor to generate pressure monitoring data.

2. A power grid tower ground pressure monitoring system according to claim 1, characterized in that: Also includes: A wireless transmission module is connected to the data acquisition module and is used to send the pressure monitoring data to a remote server by wireless transmission; wherein the remote server is used to view, analyze and store the pressure monitoring data.

3. A power grid tower ground pressure monitoring system according to claim 1, characterized in that: Also includes: A storage battery, connected to the data acquisition module, and used to provide power to the data acquisition module; The protection circuit is connected between the storage battery and the data acquisition module and is used to control the amount of electric energy.

4. A power grid tower ground pressure monitoring system according to claim 3, characterized in that: Also includes: The solar panel is connected to the storage battery and is used for converting solar energy into electrical energy and storing the electrical energy in the storage battery.

5. A power grid tower ground pressure monitoring system according to claim 1, characterized in that: There are four pressure sensors, which are respectively located on the four legs of the power grid and 1m to 2m underground.

6. A power grid tower ground pressure monitoring system according to claim 1, characterized in that: The data processing module comprises: A digital-to-analog conversion unit, connected to the pressure sensor, and configured to convert the pressure signal from an analog signal to a digital signal; An STM32 microcontroller unit is connected to the digital-to-analog conversion unit and is used to receive and process the pressure signal in the form of a digital signal to obtain pressure monitoring data; A clock unit, connected to the STM32 microcontroller unit, for recording the sampling time of the pressure monitoring data in real time; A storage unit is connected to the STM32 microcontroller unit and is used to store the pressure monitoring data.

7. A power grid tower ground pressure monitoring system according to claim 6, characterized in that ,The STM32 micro control unit includes: an STM32 main control chip, a reset circuit and a crystal oscillator circuit; The reset circuit includes a resistor R3, a capacitor C15 and a manual reset switch SW1; one end of the resistor R3 is connected to a 3.3V power supply, the other end of the resistor R3 is connected to one end of the capacitor C15, and is connected to the NRST pin of the STM32 main control chip, the other end of the capacitor C15 is grounded, the NRST pin of the STM32 main control chip is also connected to one end of the manual reset switch SW1, and the other end of the manual reset switch SW1 is grounded; The crystal oscillator circuit includes a crystal oscillator Y1, a resistor R5, a capacitor C16 and a capacitor C17; pin 1 of the crystal oscillator Y1 is connected to one end of the capacitor C16, the other end of the capacitor C16 is connected to pin 2 of the crystal oscillator Y1 and is grounded, pin 3 of the body oscillator Y1 is connected to one end of the capacitor C17, the other end of the capacitor C17 is connected to pin 4 of the crystal oscillator Y1 and is grounded, pin 1 of the crystal oscillator Y1 is also connected to one end of the resistor R5 and is connected to the OSC_IN pin of the STM32 main control chip, and the other end of the resistor R5 is connected to pin 3 of the crystal oscillator Y1 and is connected to the OSC_OUT pin of the STM32 main control chip.

8. A power grid tower ground pressure monitoring system according to claim 3, characterized in that: The protection circuit includes: a DC-DC converter, a rectifier circuit, a first filter circuit, a second filter circuit, a third filter circuit, a fourth filter circuit, a field effect transistor M1, a feedback circuit, a current limiting circuit, a resistor R1, a resistor R2, a diode D3, a diode D4, and an inductor L; The VCC pin of the DC-DC converter is connected to the input power supply, and is connected to one end of the first filter circuit and one end of the resistor R1. The other end of the first filter circuit is grounded. The other end of the resistor R1 is connected to the diode D3 and the diode D4. The other end of the diode D3 is connected to the DONE pin of the DC-DC converter. The other end of the diode D4 is connected to the CHRG pin of the DC-DC converter. The VG pin of the DC-DC converter is connected to one end of the second filter circuit. The other end of the second filter circuit is connected to the source of the field effect transistor M1. The gate of the field effect transistor M1 is connected to the DRV pin of the DC-DC converter. The drain of the field effect transistor M1 is connected to one end of the inductor L. A rectifier circuit is provided between the field effect transistor M1 and the inductor L, the other end of the inductor L is connected to one end of the current limiting circuit, the other end of the current limiting circuit is connected to one end of the feedback circuit, the other end of the feedback circuit is connected to the FB pin of the DC-DC converter, the CSP pin of the DC-DC converter is connected between the inductor L and the current limiting circuit, the BAT pin of the DC-DC converter is connected between the current limiting circuit and the feedback circuit and is connected to the third filter circuit, the COM pin of the DC-DC converter is connected to one end of the resistor R2, the other end of the resistor R2 is connected to one end of the fourth filter circuit, the other end of the fourth filter circuit is grounded, and the GND pin of the DC-DC converter is grounded.

9. A power grid tower ground pressure monitoring system according to claim 2, characterized in that: Also includes: A display is connected to the data acquisition module and is used to view the pressure monitoring data.

10. A power grid tower ground pressure monitoring system according to claim 9, characterized in that: Also includes: A keyboard is connected to the data acquisition module and is used for data browsing, calibration, data transmission, mode selection, unit selection, tolerance selection and factory reset operations.

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