Deep well geothermal water pump control circuit and device

Abstract

The utility model relates to the technical field of geothermal water pumps, and provides a deep well geothermal water pump control circuit and a deep well geothermal water pump control device, which are arranged in a water pump control cabinet and comprise a main control module, a frequency converter communication module, a temperature measurement module, a return water temperature communication module and an Ethernet communication module, the frequency converter communication module is electrically connected with the microcontroller U1 and comprises a frequency converter connecting end, and the frequency converter connecting end is used for being connected with a water pump frequency converter. According to the deep well geothermal water pump control circuit and device, the temperature measurement module is arranged to detect the water temperature of a water supply pipeline of the water pump, the return water temperature communication module communicates with a temperature measurement instrument of a return water pipeline, and the master control module adjusts the frequency of a water pump frequency converter according to the obtained inlet and outlet water temperature difference; and when the temperature difference between the supply water and the return water is small, the frequency of the water pump frequency converter is reduced, so that the energy-saving control of the deep well geothermal water pump is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of geothermal water pumps, in particular to a deep well geothermal water pump control circuit and device. Background Art

[0002] The heating and cooling system can pump groundwater or other media to the surface through a deep well geothermal water pump, and use the temperature difference underground to achieve heat exchange. In heating mode, the heat energy from the underground is extracted and transferred to the inside of the building for heating. In cooling mode, the heat energy inside the building is transferred to the underground to achieve a cooling effect. Deep well geothermal water pump systems are generally efficient, environmentally friendly, and stable, because the temperature underground is relatively stable and is not affected by seasonal changes and climate. For example, the geothermal deep well near-zero temperature drop heat exchange system with publication number CN108120038A uses a pump and a circulation pipeline to achieve heat exchange and perform cooling or heating regulation.

[0003] At present, deep well geothermal water pumps are generally controlled by frequency converters. Due to the functional limitations of frequency converters, special control cabinets or control boxes need to be installed to manage the operation of deep well geothermal water pumps. In order to reduce the difficulty of cable laying, the control cabinet of deep well geothermal water pumps is generally installed next to the deep well geothermal water pumps, which is far away from the machine room. Management personnel are often required to operate and control nearby, which increases the difficulty of control. In addition, the current control adjustment of deep well geothermal water pump frequency converters only considers the required heating or cooling temperature. When the deep well water temperature is not much different from the temperature inside the building, the water pump still runs at the original power. At this time, the temperature adjustment and energy consumption are relatively small, which will cause a large waste of energy. Utility Model Content

[0004] In view of this, the utility model proposes a deep well geothermal water pump control circuit and device. By setting a main control module, the main control module performs real-time adjustment of the water pump inverter according to the actual collected parameters to reduce the frequency of manual adjustment. At the same time, the water temperature of the water supply pipe of the water pump is detected by the temperature measurement module, and the return water temperature communication module communicates with the temperature measuring instrument of the return water pipe. According to the obtained inlet and outlet water temperature difference, energy-saving control of the deep well geothermal water pump is realized.

[0005] The technical solution of the utility model is achieved in this way:

[0006] On the one hand, the utility model provides a deep well geothermal water pump control circuit, which is arranged in a water pump control cabinet and includes a main control module, a frequency converter communication module, a temperature measurement module, a return water temperature communication module and an Ethernet communication module, wherein:

[0007] The main control module includes a microcontroller U1;

[0008] The inverter communication module is electrically connected to the microcontroller U1, and the inverter communication module includes an inverter connection terminal, and the inverter connection terminal is used to connect to the water pump inverter;

[0009] The temperature measurement module is electrically connected to the microcontroller U1. The temperature measurement module is embedded in the water supply pipeline of the water pump and is used to detect the water temperature of the water supply pipeline of the water pump. The microcontroller U1 collects the water temperature of the water supply pipeline of the water pump through the temperature measurement module.

[0010] The return water temperature communication module is electrically connected to the microcontroller U1. The microcontroller U1 communicates with the temperature measuring instrument of the return water pipe through the return water temperature communication module to obtain the water temperature of the return water pipe. The microcontroller U1 controls the start and stop of the water pump inverter through the inverter communication module according to the water temperature of the water supply pipe and the water temperature of the return water pipe, and performs frequency reading and writing;

[0011] The Ethernet communication module is electrically connected to the microcontroller U1, and the microcontroller U1 performs Ethernet communication with the PLC in the main control room through the Ethernet communication module.

[0012] On the basis of the above technical solution, preferably, the return water temperature communication module includes a wireless communication chip U6 and a surface acoustic wave filter FL1, the wireless communication chip U6 is electrically connected to the main control module, and is connected to the transceiver antenna through the surface acoustic wave filter FL1.

[0013] On the basis of the above technical solution, preferably, the inverter communication module includes a low-power transceiver U3, a resistor R2, a resistor R3, a resistor R4, a capacitor C1 and a capacitor C2, wherein:

[0014] The low-power transceiver U3 includes a first output connection end, a first input connection end, a second output connection end and a second input connection end, and the first output connection end and the first input connection end of the low-power transceiver U3 are both electrically connected to the main control module;

[0015] One end of the resistor R2 is grounded, and the other end is electrically connected to the second output connection end of the low power transceiver U3;

[0016] Two ends of the resistor R3 are electrically connected to the second output connection terminal and the second input connection terminal of the low power transceiver U3 respectively;

[0017] One end of the resistor R4 is connected to the power supply, and the other end is electrically connected to the second input connection end of the low power transceiver U3;

[0018] One end of the capacitor C1 is grounded, and the other end is electrically connected to the second input connection end of the low power transceiver U3;

[0019] One end of the capacitor C2 is grounded, and the other end is electrically connected to the second output connection end of the low power transceiver U3.

[0020] On the basis of the above technical solution, preferably, the temperature measurement module includes a temperature sensor U4 and a resistor R1, wherein:

[0021] The temperature sensor U4 includes a positive pin, a negative pin and a data transmission pin, wherein the positive pin is electrically connected to the power supply, the negative pin is grounded, and the data transmission pin is electrically connected to the microcontroller U1. The temperature sensor U4 transmits a temperature signal to the microcontroller U1 through the data transmission pin;

[0022] The two ends of the resistor R1 are electrically connected to the positive electrode pin and the data transmission pin of the temperature sensor U4 respectively.

[0023] On the basis of the above technical solution, preferably, the Ethernet communication module includes a network interface chip U5, the network interface chip U5 includes an SPI interface, the microcontroller U1 is electrically connected to the SPI interface, and the microcontroller U1 performs Ethernet communication with the PLC of the main control room through the network interface chip U5.

[0024] On the basis of the above technical solution, preferably, the microcontroller U1 includes an RS-485 interface, the inverter communication module is electrically connected to the RS-485 interface of the microcontroller U1, and the microcontroller U1 communicates between the RS-485 interface and the RS-422 interface through the inverter communication module.

[0025] Further preferably, the wireless communication chip U6 includes an I / O connection end and a RF transceiver end, the I / O connection end is electrically connected to the microcontroller U1, the microcontroller U1 transmits signals with the wireless communication chip U6 through the I / O connection end, the RF transceiver end is electrically connected to the surface acoustic filter FL1, the wireless communication chip U6 receives the RF signal of the surface acoustic filter FL1 through the RF transceiver end, and sends the RF signal to the surface acoustic filter FL1.

[0026] On the basis of the above technical solution, preferably, the main control module also includes a display module, the display module includes a plurality of display connection terminals, the display connection terminals are electrically connected to the microcontroller U1, and the display module is used to display the real-time data and local configuration information acquired by the main control module.

[0027] Further preferably, the main control module also includes a key module, the microcontroller U1 includes a control end, the key module is electrically connected to the control end of the microcontroller U1, and the key module is used to configure the parameters of the main control module and switch the display screen of the display module.

[0028] On the other hand, the utility model provides a deep well geothermal water pump control device, comprising the deep well geothermal water pump control circuit mentioned above.

[0029] The deep well geothermal water pump control circuit of the utility model has the following beneficial effects compared with the prior art:

[0030] 1. By setting up the main control module, the main control module makes real-time adjustments to the water pump inverter according to the actual collected parameters to reduce the artificial frequency adjustment. In addition, by setting up the temperature measurement module to detect the water temperature of the water pump water supply pipe, and communicating with the temperature measuring instrument of the return water pipe through the return water temperature communication module, the main control module adjusts the frequency of the water pump inverter according to the obtained inlet and outlet water temperature difference, and then increases the frequency of the water pump inverter when the supply and return water temperature difference is large. On the contrary, when the supply and return water temperature difference is small, the frequency of the water pump inverter is reduced to achieve energy-saving control of deep well geothermal water pumps;

[0031] 2. Set up an Ethernet communication module to enable the main control module to expand the Ethernet interface through the network interface chip of the Ethernet communication module, and communicate with the PLC in the main control room through Ethernet, so as to realize the monitoring of the deep well hot water pump by the main control room and improve the safety and stability of equipment operation. At the same time, the linkage control of the PLC in the main control room and the main control module can be realized to further optimize the control method. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 It is a structural schematic diagram of the deep well geothermal water pump control circuit of the utility model;

[0034] Figure 2 This is a schematic diagram of the main control module of the deep well geothermal water pump control circuit of the utility model;

[0035] Figure 3 It is a schematic diagram of the Ethernet communication module of the deep well geothermal water pump control circuit of the utility model. DETAILED DESCRIPTION

[0036] The following will be combined with the implementation of the utility model to clearly and completely describe the technical solutions in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] like Figure 1As shown, the deep well geothermal water pump control circuit of the utility model is arranged in the control cabinet of the water pump, and includes a main control module 1, a frequency converter communication module 2, a temperature measurement module 3, a return water temperature communication module 4 and an Ethernet communication module 5.

[0038] like Figure 2 As shown, the main control module 1 adopts the domestic STM32 microcontroller U1 to replace the original controller in the prior art as the main control component to realize logic control. The specific model can be selected as STM32F103C8Tx. The microcontroller U1 has 48 pins, among which pin 8 is grounded, and pin 1, pin 24, pin 36, pin 48 and pin 9 are all connected to +3.3V power supply.

[0039] The inverter communication module 2 is electrically connected to the microcontroller U1, and is used to enable the microcontroller U1 to communicate and interact with the water pump inverter, so that the microcontroller U1 controls the start and stop of the water pump inverter and performs frequency reading and writing.

[0040] In this embodiment, the microcontroller U1 has an RS-485 interface, namely, pins 11, 12 and 13 of the microcontroller U1. The RS-485 interface of the microcontroller U1 is expanded through the inverter communication module 2, and then the water pump inverter is connected, so that the microcontroller U1 and the water pump inverter complete communication interaction and control the water pump inverter.

[0041] Specifically, the inverter communication module 2 includes a low-power transceiver U3, a resistor R2, a resistor R3, a resistor R4, a capacitor C1 and a capacitor C2. The low-power transceiver U3 includes a first output connection end, a first input connection end, a second output connection end and a second input connection end. The first output connection end and the first input connection end of the low-power transceiver U3 are both electrically connected to the main control module (1). One end of the resistor R2 is grounded, and the other end is electrically connected to the second output connection end of the low-power transceiver U3. Both ends of the resistor R3 are electrically connected to the second output connection end and the second input connection end of the low-power transceiver U3 respectively. One end of the resistor R4 is connected to a power supply, and the other end is electrically connected to the second input connection end of the low-power transceiver U3. One end of the capacitor C1 is grounded, and the other end is electrically connected to the second input connection end of the low-power transceiver U3. One end of the capacitor C2 is grounded, and the other end is electrically connected to the second output connection end of the low-power transceiver U3.

[0042] The first output connection end, the first input connection end, the second output connection end and the second input connection end of the low-power transceiver U3 are pin 1, pin 4, pin 7 and pin 6 respectively, wherein pin 1, pin 2 and pin 4 are respectively connected to pin 11, pin 12 and pin 13 of the microcontroller U1, and pin 3 of the low-power transceiver U3 is also connected to pin 12 of the microcontroller U1, pin 7 of the low-power transceiver U3 is connected to resistor R2, and connected to a +5V power supply through resistor R2, pin 6 of the low-power transceiver U3 is connected to resistor R4, and grounded through resistor R4, both ends of resistor R3 are connected to pin 6 and pin 7 of the low-power transceiver U3, one end of capacitor C1 is connected to pin 7 of the low-power transceiver U3, and the other end is grounded, one end of capacitor C2 is connected to pin 6 of the low-power transceiver U3, and the other end is grounded, and at the same time, pin 6 and pin 7 of the low-power transceiver U3 are connected to the control end of the water pump inverter, wherein the resistance values ​​of resistor R2, resistor R3 and resistor R4 are all 10KΩ.

[0043] The low-power transceiver U3 is preferably a MAX485 chip, through which the RS-485 interface and the RS-422 interface communicate, thereby realizing communication and control between the microcontroller U1 and the water pump inverter.

[0044] The temperature measuring module 3 is electrically connected to the microcontroller U1 . The temperature measuring module 3 is embedded in the water supply pipeline of the water pump and is used to detect the water temperature of the water supply pipeline of the water pump. The microcontroller U1 collects the water temperature of the water supply pipeline of the water pump through the temperature measuring module 3 .

[0045] Specifically, the temperature measurement module 3 includes a temperature sensor U4 and a resistor R1. The temperature sensor U4 includes a positive pin, a negative pin and a data transmission pin. The positive pin is electrically connected to the power supply, the negative pin is grounded, and the data transmission pin is electrically connected to the microcontroller U1. The temperature sensor U4 transmits a temperature signal to the microcontroller U1 through the data transmission pin. The two ends of the resistor R1 are electrically connected to the positive pin and the data transmission pin of the temperature sensor U4, respectively.

[0046] like Figure 2 As shown, the positive pin, negative pin and data transmission pin of the temperature sensor U4 are pin 2, pin 1 and pin 3 respectively, wherein pin 1 is grounded, pin 2 of the temperature sensor U4 is connected to the power supply, pin 2 of the temperature sensor U4 is connected to the main control module 1, and the two ends of the resistor R1 are respectively connected to pin 2 and pin 3 of the temperature sensor U4, wherein the resistance value of the resistor R1 is 10KΩ, the temperature sensor U4 is preferably a DS18B20 temperature measurement chip, and pin 2 of the temperature sensor U4 is connected to pin 10 of the microcontroller U1.

[0047] In a specific setting process, the temperature measurement module 3 needs to be directly installed on the water supply pipe of the water pump, and the internal water body is exposed to the temperature sensor U4. The temperature sensor U4 measures the water temperature of the water supply pipe of the water pump in a hard-wired manner and feeds back the detected temperature to the microcontroller U1 in real time.

[0048] The return water temperature communication module 4 is electrically connected to the main control module 1 , and the return water temperature communication module 4 is used to enable the main control module 1 to communicate with a temperature measuring instrument of the return water pipeline.

[0049] At the return water end, a temperature measuring instrument is usually set to detect the return water temperature. However, the distance between the return water end and the outlet water end is large. In order to avoid laying long cables, the return water temperature communication module 4 communicates with the temperature measuring instrument of the return water pipe.

[0050] Specifically, the return water temperature communication module 4 includes a wireless communication chip U6 and an acoustic surface filter FL1. The wireless communication chip U6 is electrically connected to the main control module 1 and is connected to the transceiver antenna through the acoustic surface filter FL1. The model of the wireless communication chip U6 can be selected as SX1272, which has 28 pins, of which pin 16 is grounded, and pins 9, 10, 11, 12, 13 and 14 of the wireless communication chip U6 are respectively connected to pins 31, 32, 33, 34, 37 and 38 of the microcontroller U1. The model of the acoustic surface filter FL1 can be selected as B39162B8813P810, pins 1 and 2 of the acoustic surface filter FL1 are respectively connected to pins 24 and 25 of the wireless communication chip U6, and pins 3 and 4 of the acoustic surface filter FL1 are both connected to the antenna, and signals are received and sent through the antenna.

[0051] The wireless communication chip U6 includes an I / O connection end and a RF transceiver end. The I / O connection end is electrically connected to the microcontroller U1. The microcontroller U1 transmits signals with the wireless communication chip U6 through the I / O connection end. The RF transceiver end is electrically connected to the surface acoustic filter FL1. The wireless communication chip U6 receives the RF signal of the surface acoustic filter FL1 through the RF transceiver end and sends the RF signal to the surface acoustic filter FL1. The I / O connection end is pins 9-14 of the wireless communication chip U6, and the RF transceiver end is pins 24-25 of the wireless communication chip U6.

[0052] During the continuous circulation of water supply and return, if the temperature difference between the water supply temperature and the return water temperature is large, it means that more temperatures need to be adjusted in the building. The microcontroller U1 can directly adjust the water pump inverter according to the supply and return water temperatures fed back by the return water temperature communication module 4 and the temperature measurement module 3 to increase the frequency of the deep well hot water pump. On the contrary, if the temperature difference between the water supply temperature and the return water temperature is small, it means that the water temperature of the building is basically the same. Then, the water pump inverter is adjusted by the microcontroller U1 to reduce the frequency of the deep well hot water pump to achieve the purpose of energy-saving control. It should be noted that the frequency can be adjusted according to the feedback temperature difference by setting the control program or making the temperature difference value correspond to the frequency of the deep well hot water pump. The temperature difference value is made to correspond to the frequency of the deep well hot water pump to adjust the frequency according to the feedback temperature difference. Parameter matching can be achieved by setting a comparison table.

[0053] The Ethernet communication module is electrically connected to the microcontroller U1, and the microcontroller U1 performs Ethernet communication with the PLC in the main control room through the Ethernet communication module.

[0054] The existing control cabinet of the deep well pump is generally installed next to the deep well pump, which is far away from the machine room, and often requires management personnel to operate and control nearby. Through the Ethernet communication module 5, management personnel can perform remote control to save manpower. At the same time, the linkage control of the main control room PLC and the microcontroller U1 can be realized.

[0055] The Ethernet communication module includes a network interface chip U5, and the network interface chip U5 includes an SPI interface. The microcontroller U1 is electrically connected to the SPI interface. The microcontroller U1 performs Ethernet communication with the PLC in the main control room through the network interface chip U5.

[0056] like Figure 3 As shown, the Ethernet communication module 5 includes a network interface chip U5, and the model of the network interface chip U5 is preferably W5100. The network interface chip U5 is electrically connected to the main control module 1 through an SPI interface. There are 76 pins on the network interface chip U5. Pin 7, pin 15, pin 2, pin 12 and pin 31 of the network interface chip U5 are all connected to a +3.3V power supply. An inductor L1 is set between pin 12 and the +3.3V power supply. A resistor R8 is connected in series between pin 31 and the +3.3V power supply. Pin 13 is a ground pin. Pin 27, pin 28, pin 29 and pin 30 of the network interface chip U5 are SPI interfaces, which are respectively connected to pin 16, pin 17, pin 14 and pin 15 of the microcontroller U1. The main control module 1 extends the Ethernet interface through the Ethernet communication module 5, and performs Ethernet communication with the PLC of the main control room, which can support the main control room to monitor the deep well hot water pump.

[0057] As a preferred embodiment, a display module is also provided, and the display module is electrically connected to the main control module 1. The display module is used to display the real-time data acquired by the main control module 1 and local operations such as configuration parameters. Specifically, the display module can select an RC1602A liquid crystal display unit U2, and pin 1 and pin 16 of the display module are grounded, pin 2 and pin 15 are connected to a +5V power supply, and pins 4-14 are respectively connected to pins 41-46 and pins 21-28 of the microcontroller U1.

[0058] In order to adjust the local configuration of the microcontroller U1 and switch the display screen of the display module, a key module is also included. The key module is electrically connected to the main control module 1. The key module is used to configure the parameters of the main control module 1 and switch the display screen of the display module. Specifically, the key module includes four key units, one end of the four key units is connected to the power supply, and the other end is respectively connected to pin 18, pin 19, pin 20 and pin 39 of the microcontroller U1. The local parameter configuration is modified or the display screen of the display module is switched through the four key units.

[0059] The deep well geothermal water pump control device of the utility model comprises the above-mentioned control circuit, specifically a control cabinet provided with the above-mentioned control circuit.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A deep well geothermal water pump control circuit, characterized in that: It is arranged in a water pump control cabinet and comprises a main control module (1), a frequency converter communication module (2), a temperature measurement module (3), a return water temperature communication module (4) and an Ethernet communication module (5), wherein: The main control module (1) includes a microcontroller U1; The frequency converter communication module (2) is electrically connected to the microcontroller U1, and the frequency converter communication module (2) comprises a frequency converter connection end, and the frequency converter connection end is used to connect to the water pump frequency converter; The temperature measurement module (3) is electrically connected to the microcontroller U1. The temperature measurement module (3) is embedded in the water supply pipeline of the water pump and is used to detect the water temperature of the water supply pipeline of the water pump. The microcontroller U1 collects the water temperature of the water supply pipeline of the water pump through the temperature measurement module (3). The return water temperature communication module (4) is electrically connected to the microcontroller U1. The microcontroller U1 communicates with the temperature measuring instrument of the return water pipeline through the return water temperature communication module (4) to obtain the water temperature of the return water pipeline. The microcontroller U1 controls the start and stop of the water pump inverter through the inverter communication module (2) according to the water temperature of the water supply pipeline and the water temperature of the return water pipeline, and performs frequency reading and writing. The Ethernet communication module (5) is electrically connected to the microcontroller U1, and the microcontroller U1 performs Ethernet communication with the PLC in the main control room via the Ethernet communication module (5).

2. The deep well geothermal water pump control circuit according to claim 1, characterized in that: The return water temperature communication module (4) comprises a wireless communication chip U6 and a surface acoustic wave filter FL1. The wireless communication chip U6 is electrically connected to the main control module (1) and is connected to a transceiver antenna via the surface acoustic wave filter FL1.

3. The deep well geothermal water pump control circuit according to claim 1, characterized in that: The inverter communication module (2) comprises a low-power transceiver U3, a resistor R2, a resistor R3, a resistor R4, a capacitor C1 and a capacitor C2, wherein: The low-power transceiver U3 comprises a first output connection end, a first input connection end, a second output connection end and a second input connection end, wherein the first output connection end and the first input connection end of the low-power transceiver U3 are both electrically connected to the main control module (1); One end of the resistor R2 is grounded, and the other end is electrically connected to the second output connection end of the low power transceiver U3; Two ends of the resistor R3 are electrically connected to the second output connection terminal and the second input connection terminal of the low power transceiver U3 respectively; One end of the resistor R4 is connected to the power supply, and the other end is electrically connected to the second input connection end of the low power transceiver U3; One end of the capacitor C1 is grounded, and the other end is electrically connected to the second input connection end of the low power transceiver U3; One end of the capacitor C2 is grounded, and the other end is electrically connected to the second output connection end of the low power transceiver U3.

4. The deep well geothermal water pump control circuit according to claim 1, characterized in that: The temperature measurement module (3) comprises a temperature sensor U4 and a resistor R1, wherein: The temperature sensor U4 includes a positive pin, a negative pin and a data transmission pin, wherein the positive pin is electrically connected to the power supply, the negative pin is grounded, and the data transmission pin is electrically connected to the microcontroller U1. The temperature sensor U4 transmits a temperature signal to the microcontroller U1 through the data transmission pin; The two ends of the resistor R1 are electrically connected to the positive electrode pin and the data transmission pin of the temperature sensor U4 respectively.

5. The deep well geothermal water pump control circuit according to claim 1, characterized in that: The Ethernet communication module (5) comprises a network interface chip U5, the network interface chip U5 comprises an SPI interface, the microcontroller U1 is electrically connected to the SPI interface, and the microcontroller U1 performs Ethernet communication with the PLC of the main control room via the network interface chip U5.

6. The deep well geothermal water pump control circuit according to claim 1, characterized in that: The microcontroller U1 comprises an RS-485 interface, the inverter communication module (2) is electrically connected to the RS-485 interface of the microcontroller U1, and the microcontroller U1 communicates between the RS-485 interface and the RS-422 interface via the inverter communication module (2).

7. The deep well geothermal water pump control circuit according to claim 2, characterized in that: The wireless communication chip U6 includes an I / O connection end and a RF transceiver end. The I / O connection end is electrically connected to the microcontroller U1. The microcontroller U1 transmits signals with the wireless communication chip U6 through the I / O connection end. The RF transceiver end is electrically connected to the surface acoustic filter FL1. The wireless communication chip U6 receives the RF signal of the surface acoustic filter FL1 through the RF transceiver end and sends the RF signal to the surface acoustic filter FL1.

8. The deep well geothermal water pump control circuit according to claim 1, characterized in that: The main control module (1) further comprises a display module, the display module comprising a plurality of display connection terminals, the display connection terminals being electrically connected to the microcontroller U1, and the display module being used to display real-time data and local configuration information acquired by the main control module (1).

9. The deep well geothermal water pump control circuit according to claim 8, characterized in that: The main control module (1) further comprises a key module, the microcontroller U1 comprises a control terminal, the key module is electrically connected to the control terminal of the microcontroller U1, and the key module is used to configure the parameters of the main control module (1) and switch the display screen of the display module.

10. A deep well geothermal water pump control device, characterized in that: The invention comprises the deep well geothermal water pump control circuit as described in any one of claims 1 to 9.

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