Integrated detection device, control system and air conditioning system

Abstract

The embodiment of the utility model provides an integrated detection device, a control system and an air conditioning system. The integrated detection device comprises: a main body provided with a plurality of mutually independent cavities; the plurality of pipe bodies are communicated with the plurality of cavities in a one-to-one correspondence manner, and the plurality of pipe bodies are used for communicating the plurality of to-be-detected fluid pipelines with the corresponding cavities; the plurality of pressure sensitive elements are in one-to-one correspondence with the plurality of cavities, and the pressure sensitive elements are in contact with the to-be-measured fluid in the corresponding cavities and are used for sensing the pressure of the to-be-measured fluid and generating corresponding pressure electric signals; the conditioning module is electrically connected with the multiple pressure sensitive elements and used for processing the pressure electric signals generated by the pressure sensitive elements and outputting multiple detection signals, the multiple detection signals correspond to the multiple pressure sensitive elements in a one-to-one mode, and the detection signals are signals obtained after the pressure electric signals generated by the pressure sensitive elements are processed. According to the integrated detection device, the product cost is reduced, and the assembly efficiency is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of sensing technologies, and in particular, to an integrated detection device, a control system, and an air conditioning system. Background Art

[0002] The control of an air conditioning system usually requires the use of pressure sensors. The pressure sensors detect the pressure in the system pipeline and feedback it to the control main board. The control main board controls the compressor according to the pressure value. For example, a low-pressure pressure sensor is arranged on the suction pipe of the compressor, and a high-pressure pressure sensor is arranged on the discharge pipe. Each pressure sensor is connected to the control main board through three wires. The multiple pressure sensors are independent sensors. To arrange multiple sensors, corresponding installation structures and corresponding electrical cables need to be provided, and corresponding connectors also need to be set on the control main board, which reduces the assembly efficiency and increases the cost of the air conditioning system. Summary of the Utility Model

[0003] Embodiments of the present disclosure provide an integrated detection device, a control system, and an air conditioning system to solve or alleviate one or more technical problems in the prior art.

[0004] As a first aspect of the embodiments of the present disclosure, an integrated detection device is provided, including:

[0005] A main body provided with a plurality of independent cavities;

[0006] A plurality of pipe bodies, corresponding to and communicating with the plurality of cavities one by one, and the plurality of pipe bodies are used to connect a plurality of fluid pipelines to be measured with the corresponding cavities;

[0007] A plurality of pressure-sensitive elements, corresponding to the plurality of cavities one by one, and the pressure-sensitive elements are in contact with the fluid to be measured in the corresponding cavities, and are used to sense the pressure of the fluid to be measured and generate corresponding pressure electrical signals;

[0008] A conditioning module, electrically connected to the plurality of pressure-sensitive elements respectively, and is used to process the pressure electrical signals generated by the pressure-sensitive elements and output a plurality of detection signals. The plurality of detection signals correspond to the plurality of pressure-sensitive elements one by one, and the detection signal is a signal obtained by processing the pressure electrical signal generated by the pressure-sensitive element.

[0009] In some embodiments, the plurality of cavities include a first cavity and a second cavity, the plurality of pipe bodies include a first pipe body and a second pipe body, and the plurality of pressure-sensitive elements include a first pressure-sensitive element and a second pressure-sensitive element;

[0010] The first pipe body and the second pipe body are respectively communicated with the first cavity and the second cavity;

[0011] The first pressure-sensitive element and the second pressure-sensitive element are respectively in contact with the fluid to be measured in the first cavity and the second cavity, and respectively generate corresponding first pressure electrical signals and second pressure electrical signals;

[0012] The conditioning module is electrically connected to the first pressure-sensitive element and the second pressure-sensitive element respectively, and is used to process the first pressure electrical signal and the second pressure electrical signal, and output a first detection signal and a second detection signal.

[0013] In some embodiments, the conditioning module includes a first conditioning unit, and the first conditioning unit includes a first input channel and a second input channel. The first pressure-sensitive element and the second pressure-sensitive element are electrically connected to the first input channel and the second input channel respectively.

[0014] In some embodiments, the first conditioning unit includes a first output channel and a second output channel. The first output channel and the second output channel are respectively used to output the first detection signal and the second detection signal.

[0015] In some embodiments, a first transmission cable is further included. The first transmission cable includes a first signal line, a second signal line, a first power line and a second power line. The first signal line and the second signal line are electrically connected to the first output channel and the second output channel respectively, and the first power line and the second power line are electrically connected to the positive power supply and the negative power supply of the first conditioning unit respectively.

[0016] In some embodiments, the first conditioning unit includes a third output channel, and the third output channel is used to alternately output the first detection signal and the second detection signal.

[0017] In some embodiments, a first transmission cable is further included. The first transmission cable includes a signal line, a first power line and a second power line. The signal line is electrically connected to the third output channel, and the first power line and the second power line are electrically connected to the positive power supply and the negative power supply of the first conditioning unit respectively.

[0018] In some embodiments, a communication bus cable is further included. The communication bus cable is used to output the first detection signal and the second detection signal, and is also used to supply the power obtained from the outside to the first conditioning unit.

[0019] In some embodiments, the conditioning module includes a second conditioning unit and a third conditioning unit. The second conditioning unit includes a first input channel and a first output channel. The first pressure electrical signal is electrically connected to the first input channel, and the first output channel is used to output the first detection signal, and the first detection signal is a signal obtained by processing the first pressure electrical signal;

[0020] The third conditioning unit includes a second input channel and a second output channel. The second pressure electrical signal is electrically connected to the second input channel, and the second output channel is used to output a second detection signal, where the second detection signal is a signal obtained by processing the second pressure electrical signal.

[0021] In some embodiments,

[0022] The integrated detection device further includes a second transmission cable. The second transmission cable includes a first signal line, a second signal line, a first power line, and a second power line. The first signal line and the second signal line are electrically connected to the first output channel and the second output channel respectively. The first power line is electrically connected to the positive power supply of the second conditioning unit and the third conditioning unit, and the second power line is electrically connected to the negative power supply of the second conditioning unit and the third conditioning unit.

[0023] In some embodiments, the detection range of the first pressure-sensitive element is 0 to 2 MPa; the detection range of the second pressure-sensitive element is 3.5 MPa to 4.5 MPa.

[0024] In some embodiments, multiple cavities are arranged in parallel. The pressure-sensitive element is installed at one end of the cavity away from the pipe body, and is hermetically connected between the pressure-sensitive element and the cavity; the conditioning module is located on the side of the pressure-sensitive element away from the cavity;

[0025] The integrated detection device further includes a cover body that covers the main body, and the conditioning module is located between the pressure-sensitive element and the cover body.

[0026] In some embodiments, it further includes a temperature sensing element. The temperature sensing element is electrically connected to the conditioning module, and the conditioning module is further used to process the temperature electrical signal generated by the temperature sensing element. The detection signal output by the conditioning module includes a pressure detection signal and a temperature detection signal.

[0027] In some embodiments, it further includes a temperature detection device. The negative power supply of the temperature detection device is electrically connected to the negative power supply of the conditioning module. The integrated detection device further includes a temperature signal line, and the temperature signal line is electrically connected to the signal terminal of the temperature detection device.

[0028] As the second aspect of the embodiments of the present disclosure, the embodiments of the present disclosure provide a control system, which includes the integrated detection device of the present disclosure, and further includes a control module electrically connected to the integrated detection device. The control module is used to perform control according to the detection signal output by the integrated detection device.

[0029] In some embodiments, it further includes a signal isolation module. The signal isolation module includes an isolation input part and an isolation output part. The integrated detection device is electrically connected to the isolation input part, and the isolation output part is electrically connected to the control module.

[0030] In some embodiments, the detection signal output by the integrated detection device is a digital signal, and the signal isolation module satisfies:

[0031] The signal isolation module includes an optocoupler device. The detection signal output by the integrated detection device is coupled to the input part of the optocoupler device, and the control module is coupled to the output part of the optocoupler device. The control module is configured to perform control according to the signal obtained from the output part of the optocoupler device; or,

[0032] The signal isolation module includes a digital isolator. The digital isolator includes an input part and an output part. The positive power supply terminal and the negative power supply terminal of the input part are respectively coupled to the positive power supply terminal and the negative power supply terminal of the integrated detection device, and the signal terminal of the input part is coupled to the detection signal of the integrated detection device; the positive power supply terminal, the negative power supply terminal and the signal terminal of the output part are all coupled to the control module. The control module is configured to perform control according to the signal obtained from the signal terminal of the output part.

[0033] In some embodiments, the detection signal output by the integrated detection device is an analog signal. The signal isolation module includes an isolation operational amplifier. The isolation operational amplifier includes an input part and an output part. The positive power supply terminal and the negative power supply terminal of the input part are respectively coupled to the positive power supply terminal and the negative power supply terminal of the integrated detection device, and the two signal terminals of the input part are respectively coupled to the detection signal and the negative power supply terminal of the integrated detection device; the positive power supply terminal, the negative power supply terminal and the two signal terminals of the output part are all coupled to the control module. The control module is configured to perform control according to the signals obtained from the two signal terminals of the output part.

[0034] In some embodiments,

[0035] The control module includes a power socket for receiving a power supply. The positive power supply terminal and the negative power supply terminal of the integrated detection device are respectively coupled to the positive power supply terminal and the negative power supply terminal of the power socket; or,

[0036] The control module includes a power socket for receiving a power supply. The control system further includes a DC isolation power supply. The two input power pins of the DC isolation power supply are respectively coupled to the two power pins of the power socket, and the two output power pins of the DC isolation power supply are respectively coupled to the positive power supply terminal and the negative power supply terminal of the integrated detection device team;

[0037] The control system further includes a power module. The power module includes a primary winding, a first-stage output winding and a second-stage output winding. Among them, the primary winding of the power module is coupled to an alternating current, the first-stage output winding of the power module is used to supply power to the control module, and a capacitor is provided between the first-stage output winding and the primary winding; the second-stage output winding of the power module is coupled to the positive power supply terminal and the negative power supply terminal of the integrated detection device.

[0038] In some embodiments, the control system further includes a compressor. The first pipe body in the integrated detection device is communicated with the suction pipe of the compressor, and the second pipe body in the integrated detection device is communicated with the discharge pipe of the compressor. The control module is configured to control the operation of the compressor according to the detection signal output by the integrated detection device.

[0039] As a third aspect of the embodiments of the present disclosure, the embodiments of the present disclosure provide an air conditioning system, including the integrated detection device of the present disclosure; or, including the control system of the present disclosure.

[0040] In the technical solution of the embodiments of the present disclosure, the integrated detection device integrates a plurality of modules for sensing the pressure of the fluid to be measured in one body, can perform fluid pressure detection on a plurality of fluid pipelines to be measured, reduces the manufacturing cost of the detection device, saves the assembly time, and improves the assembly efficiency. When the integrated detection device is applied to an air conditioning system, one integrated detection device can perform pressure detection on the suction pipe and the discharge pipe of the compressor, improves the assembly efficiency of the air conditioning system, and reduces the cost of the air conditioning system.

[0041] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present disclosure will be readily apparent by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In the drawings, unless otherwise specified, the same reference numerals throughout the several views denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments in accordance with the present disclosure and should not be regarded as limiting the scope of the present disclosure.

[0043] Figure 1 It is a schematic diagram of the pressure control connection in the air conditioning system;

[0044] Figure 2 It is a schematic exploded view of a pressure sensor;

[0045] Figure 3 It is a schematic exploded view of the integrated detection device in an embodiment of the present disclosure;

[0046] Figure 4 It is a schematic diagram of the electrical connection between the integrated detection device and the control module in an embodiment of the present disclosure;

[0047] Figure 5 It is a schematic diagram of the electrical connection between the integrated detection device and the control module in another embodiment of the present disclosure;

[0048] Figure 6Schematic diagram of the electrical connection between the integrated detection device and the control module in another embodiment of the present disclosure;

[0049] Figure 7 Schematic diagram of the electrical connection between the integrated detection device and the control module in another embodiment of the present disclosure;

[0050] Figure 8 Schematic diagram of the electrical connection between the integrated detection device and the control module in yet another embodiment of the present disclosure;

[0051] Figure 9 Schematic diagram of the electrical connection between the integrated detection device and the control module in another embodiment of the present disclosure;

[0052] Figure 10 Schematic diagram of the electrical connection between the integrated detection device and the control module in yet another embodiment of the present disclosure;

[0053] Figure 11 Schematic diagram of the connection of the control system in another embodiment of the present disclosure;

[0054] Figure 12 Schematic diagram of the connection of the control system in another embodiment of the present disclosure;

[0055] Figure 13 Schematic diagram of the connection of the control system in another embodiment of the present disclosure;

[0056] Figure 14 Schematic diagram of the connection of the control system in another embodiment of the present disclosure;

[0057] Figure 15 Schematic diagram of the power supply circuit of the control module and the integrated detection device in an embodiment of the present disclosure;

[0058] Figure 16 Schematic diagram of the power supply circuit of the control module and the integrated detection device in another embodiment of the present disclosure;

[0059] Figure 17 Schematic diagram of the power supply circuit of the control module and the integrated detection device in another embodiment of the present disclosure. Detailed implementation manners

[0060] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present disclosure, and different embodiments can be arbitrarily combined without conflict. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0061] Figure 1 Schematic diagram of the pressure control connection in the air conditioning system, Figure 2It is a schematic exploded view of a pressure sensor. As Figure 1 shown, in an air-conditioning system, a low-pressure pressure sensor is usually arranged on the suction pipe of the compressor, and a high-pressure pressure sensor is arranged on the discharge pipe of the compressor. The low-pressure pressure sensor and the high-pressure pressure sensor are respectively connected to the control main board through a three-core cable. The control main board may include a printed circuit board and a main control unit (MCU) arranged on the printed circuit board. The main control unit may be a main control chip or a modular circuit. The control main board provides a DC power supply to the pressure sensor through the cable. The DC power supply may be 5V or 3.3V. The pressure sensor outputs a pressure detection signal corresponding to the pressure according to the actually sensed pressure. The pressure detection signal may be an analog signal or a digital signal conforming to a certain protocol and is provided to the control main board. The control main board obtains the pressures of the suction pipe and the discharge pipe of the compressor according to the received pressure detection signal and controls the working state of the compressor.

[0062] The pressure sensor and its structure are as Figure 2 shown. The pressure sensor includes a tube body, an outer structural member, a sealing ring, a shielding protection metal member, a pressure-sensitive element, a circuit board, etc. Among them, the outer structural member is provided with a cavity, the tube body communicates with the cavity, and the other end of the tube body is used to communicate with a pipeline to receive the gas to be measured; the shielding protection metal member is used to achieve Electro Magnetic Compatibility (EMC); the pressure-sensitive element may also be called a pressure-sensitive element, and the pressure-sensitive element may include Microelectro Mechanical Systems (MEMS), ceramics, etc.; the circuit board includes a conditioning chip and its peripheral circuit. Common pressure-sensitive elements include resistive, capacitive, etc. The pressure-sensitive element is used to convert the pressure in the pipeline into a weak electrical signal, and the conditioning chip is used to process the weak electrical signal and feedback the processed signal to the control main board.

[0063] Usually, before the product leaves the factory, it is necessary to calibrate and test the pressure-sensitive element of each pressure sensor and write the corresponding parameters into the corresponding conditioning chip. For the shielding protection metal member, some pressure sensors are provided with a shielding protection metal member, and some are not. As Figure 2 shown, the outer structural member is provided with a cavity, and the shielding protection metal member is located in the cavity. The shielding protection metal member is insulated from the outer structural member. Usually, insulating paper is arranged between the shielding protection metal member and the outer structural member, or an insulating layer is sprayed on the inner side wall of the outer structural member to achieve insulation between the shielding protection metal member and the outer structural member.

[0064] In a pressure sensor provided with a shielding protection metal part, the positive power supply and the negative power supply on the circuit board are respectively connected to the shielding protection metal part through capacitors. For a pressure sensor without a shielding protection metal part, the positive power supply and the negative power supply on the circuit board are respectively connected to the outer structural part through capacitors. Usually, the outer structural part is connected to the machine structure and then to the ground. Therefore, the pressure sensor without a shielding protection metal part has a lower withstand voltage and a lower cost, while the pressure sensor provided with a shielding protection metal part has a higher withstand voltage and a higher cost.

[0065] In the related art, in order to improve the voltage withstand of the pressure sensor, a shielding protection metal part is provided in the pressure sensor, resulting in a higher cost. Moreover, multiple pressure sensors are independent of each other and are assembled independently, which reduces the assembly efficiency and increases the assembly cost, thereby increasing the cost of the air conditioning system.

[0066] To solve some problems in the related art, an embodiment of the present disclosure proposes an integrated detection device, which can also be called an integrated sensor.

[0067] Figure 3 It is a schematic exploded view of the integrated detection device in an embodiment of the present disclosure. As Figure 3 shown, the integrated detection device may include a main body 11, a plurality of pipe bodies 12, a plurality of pressure sensitive elements 13, and a conditioning module 14. The main body 11 is provided with a plurality of independent cavities. The plurality of pipe bodies 12 communicate with the plurality of cavities one by one, and the plurality of pipe bodies 12 are used to connect a plurality of fluid pipelines to be measured with the corresponding cavities. For example, one end of the first pipe body 12a communicates with the corresponding cavity, and the other end of the first pipe body 12a can communicate with the fluid pipeline to be measured. Thus, the first pipe body 12a can connect the fluid pipeline to be measured with the corresponding cavity, so that the fluid pressure in the cavity is the same as the fluid pressure in the fluid pipeline to be measured. The fluid can be liquid and / or gas.

[0068] The plurality of pressure sensitive elements 13 correspond to the plurality of cavities one by one, and the pressure sensitive elements 13 are in contact with the fluid to be measured in the corresponding cavities. The pressure sensitive elements 13 are used to sense the pressure of the fluid to be measured and generate corresponding pressure electrical signals. The conditioning module 14 is electrically connected to the plurality of pressure sensitive elements respectively, and the conditioning module 14 is used to process the pressure electrical signals generated by the pressure sensitive elements 13 and output a plurality of detection signals. The plurality of detection signals correspond to the plurality of pressure sensing elements one by one, and the detection signals are signals obtained by processing the pressure electrical signals generated by the pressure sensitive elements.

[0069] Exemplarily, the integrated detection device is electrically connected to a control module 20. The control module 20 receives the detection signals output by the conditioning module 14 and can obtain the corresponding fluid pressure according to the detection signals.

[0070] In the technical solution of the embodiment of the present disclosure, the integrated detection device integrates a plurality of modules for sensing the pressure of the fluid to be measured in a main body 11, and can perform fluid pressure detection on a plurality of fluid pipelines to be measured, reducing the manufacturing cost of the detection device, saving the assembly time, and improving the assembly efficiency. When the integrated detection device is applied to an air conditioning system, one integrated detection device can perform pressure detection on the suction pipe and the discharge pipe of the compressor, improving the assembly efficiency of the air conditioning system and reducing the cost of the air conditioning system.

[0071] In one embodiment, as Figure 3 shown, a plurality of cavities are arranged in parallel, and the pressure-sensitive element 13 is installed at one end of the cavity away from the pipe body 12. The pressure-sensitive element 13 is hermetically connected to the cavity. Thus, the pressure-sensitive element 13 closes the cavity, so that the fluid in the cavity can act on the pressure-sensitive element 13, and the pressure-sensitive element can sense the pressure of the fluid. The conditioning module 14 is located on the side of the pressure-sensitive element 13 away from the cavity, and a preset gap is provided between the conditioning module 14 and the pressure-sensitive element 13. A sealing ring can be provided between the pressure-sensitive element 13 and the cavity to make the two hermetically connected, or a sealant can be provided between the pressure-sensitive element 13 and the cavity to make the two hermetically connected.

[0072] The integrated detection device further includes a cover body (not shown in the figure). The cover body covers the main body 11, and the conditioning module 14 is located between the pressure-sensitive element 13 and the cover body. A preset gap is provided between the conditioning module 14 and the pressure-sensitive element 13, and a preset gap is provided between the conditioning module 14 and the cover body. The shape of the cover body can be a cylindrical wall type, and an accommodating space can be formed inside the cover body, and the conditioning module 14 can be located in the accommodating space of the cover body. The shape of the cover body is not limited to a cylindrical shape, and can also be other shapes.

[0073] Exemplarily, an insulating material can be filled between the pressure-sensitive element 13 and the conditioning module 14. The filled insulating material can not only separate the pressure-sensitive element 13 from the conditioning module 14 so that a preset gap is maintained between the two, but also play an insulating and protective role. The insulating material can be insulating glue or the like.

[0074] Exemplarily, the material of the structural member in the integrated detection device can include aluminum or steel. In the related art, the main body material of the pressure sensor is copper, and the cost of copper material is relatively high. The structural member of the integrated detection device in the present disclosure uses aluminum or steel, greatly reducing the material cost.

[0075] For the integrated detection device with such a structure, multiple cavities are arranged in parallel, which can reduce the cross-sectional size of the main body; a pressure-sensitive element is used to seal the other end of the cavity, eliminating the need to fabricate other sealing components additionally, simplifying the assembly process and improving the assembly efficiency; the conditioning module 14 is arranged on the side of the pressure-sensitive element away from the cavity, ensuring that the cross-sectional size of the integrated sensor is defined by the main body, further guaranteeing that the integrated detection device has a smaller overall volume and saving the installation space; by providing a cover body and covering the conditioning module 14 with the cover body, a better protection effect is achieved on the conditioning module 14.

[0076] In one embodiment, as Figure 3 shown, the multiple cavities may include a first cavity and a second cavity. For example, the main body is provided with two independent cavities, namely the first cavity and the second cavity. The shape of the cavity may be columnar. Correspondingly, the multiple tubes 12 may include a first tube 12a and a second tube 12b; the multiple pressure-sensitive elements may include a first pressure-sensitive element 13a and a second pressure-sensitive element 13b.

[0077] As Figure 3 shown, the first tube 12a and the second tube 12b may communicate with the first cavity and the second cavity respectively. For example, one end of the first tube 12a communicates with the first cavity, and the other end of the first tube 12a is used to communicate with a fluid pipeline to be measured; one end of the second tube 12b communicates with the second cavity, and the other end of the second tube 12b is used to communicate with another fluid pipeline to be measured. Figure 3 The shapes of the tubes shown in

[0078] are linear. In other embodiments, the shapes of the tubes are not limited to linear shapes, and the shapes of the tubes may also be arc-shaped or curved. The specific shapes of the tubes may be set according to needs as long as they can achieve the communication between the fluid pipeline to be measured and the corresponding cavity.

[0079] Exemplarily, the detection range of the first pressure-sensitive element 13a is 0 to 2 MPa; the detection range of the second pressure-sensitive element 13b is 3.5 MPa to 4.5 MPa. With such a setting, the detection range of the first pressure-sensitive element 13a is adapted to the gas pressure range in the return air pipe of the air-conditioning system and can be used to detect the fluid pressure in the return air pipe; the detection range of the second pressure-sensitive element 13b is adapted to the gas pressure range in the exhaust pipe of the air-conditioning system and can be used to detect the fluid pressure in the exhaust pipe. Thus, this integrated detection device can detect the pressures of the return air pipe and the exhaust pipe of the compressor, improving the assembly efficiency of the air-conditioning system and reducing the cost of the air-conditioning system.

[0080] It should be noted that the detection ranges of the first pressure-sensitive element 13a and the second pressure-sensitive element 13b can be set according to needs for application in other scenarios.

[0081] The pressure-sensitive element can include Microelectro Mechanical Systems (MEMS) and pressure-sensitive materials, etc. The type of the pressure-sensitive element can be resistive, capacitive, fiber optic, resonant, or piezoelectric, etc. The pressure-sensitive element is used to convert the pressure in the pipeline into a weak electrical signal. The pressure-sensitive material in the pressure-sensitive element can be semiconductor material, ceramic material, or metal material, etc.

[0082] The conditioning module 14 is electrically connected to the first pressure-sensitive element 13a and the second pressure-sensitive element 13b respectively, and is used to process the first pressure electrical signal and the second pressure electrical signal and output the processed signals. The conditioning module 14 can perform signal amplification, filtering, etc. on the first pressure electrical signal and the second pressure electrical signal to improve the intensity of the output detection signal and the detection accuracy. Exemplarily, the first pressure-sensitive element 13a is electrically connected to the conditioning module 14 and transmits the first pressure electrical signal to the conditioning module 14; the second pressure-sensitive element 13b is electrically connected to the conditioning module 14 and transmits the second pressure electrical signal to the conditioning module 14. The conditioning module 14 processes the received first pressure electrical signal and second pressure electrical signal and outputs the first detection signal and the second detection signal. The first detection signal is the signal after processing the first pressure electrical signal. The second detection signal is the signal after processing the second pressure electrical signal.

[0083] The integrated detection device is set to integrate two cavities, two pipe bodies, and two pressure-sensitive elements, so that the integrated detection device can detect two different fluid pipelines to be measured.

[0084] It should be noted that in the specific embodiments of this article, taking an integrated detection device that integrates two cavities, two pipe bodies, two pressure-sensitive elements, etc. and can detect two fluid pipelines to be measured as an example, the integrated detection device will be described in detail. It can be understood that the integrated detection device of the present disclosure is not limited to detecting two fluid pipelines to be measured. Those skilled in the art can, according to the inventive concept of the present disclosure, set the integrated detection device to integrate more cavities, pipe bodies, and pressure-sensitive elements, so as to detect more fluid pipelines to be measured.

[0085] Figure 4 FIG. is a schematic diagram of the electrical connection between the integrated detection device and the control module in an embodiment of the present disclosure. The control system may include the integrated detection device in the embodiments of the present disclosure, and further include a control module 20. The integrated detection device 10 is electrically connected to the control module 20. The control module 20 can perform control according to the detection signal output by the integrated detection device 10. In one embodiment, in the integrated detection device, the conditioning module 14 may include a first conditioning unit 14a. As Figure 4 shown, the first conditioning unit 14a may include a first input channel and a second input channel. The first pressure-sensitive element 13a and the second pressure-sensitive element 13b are respectively electrically connected to the first input channel and the second input channel. For example, the first pressure-sensitive element 13a is connected to the first input channel. Thus, the first pressure electrical signal generated by the first pressure-sensitive element 13a can be transmitted to the first conditioning unit 14a through the first input channel, so that the conditioning module 14 can process the first pressure electrical signal. The second pressure-sensitive element 13b is connected to the second input channel. Thus, the second pressure electrical signal generated by the second pressure-sensitive element 13b can be transmitted to the first conditioning unit 14a through the second input channel, so that the conditioning module 14 can process the second pressure electrical signal.

[0086] Exemplarily, the first conditioning unit 14a may include a conditioning chip. The conditioning module 14 may further include a first printed circuit board (PCB1). The conditioning chip may be disposed on the first printed circuit board. When the first conditioning unit 14a includes a conditioning chip, the conditioning module 14 may further include a peripheral circuit disposed on the first printed circuit board. In another embodiment, the first conditioning unit 14a may be a conditioning circuit with conditioning functions disposed on the first printed circuit board.

[0087] The number of connection ports of the first input channel and the second input channel can be set as needed. Figure 4In this case, the first pressure-sensitive element 13a or the second pressure-sensitive element 13b is electrically connected to the first conditioning unit 14a through three or four connection lines. Therefore, the number of connection ports of the first input channel and the second input channel is 3 or 4. In a specific embodiment, the number of connection lines between the pressure-sensitive element and the first conditioning unit 14a can be determined according to the type of the pressure-sensitive element (such as resistive, capacitive, etc.), and then the number of connection ports of the first input channel and the second input channel can be determined. For example, when the pressure-sensitive element is capacitive, the number of connection ports of the first input channel and the second input channel is 3, and the number of connection lines between the pressure-sensitive element and the first conditioning unit 14a is 3.

[0088] In one embodiment, the first pressure-sensitive element 13a and the second pressure-sensitive element 13b are symmetrically arranged with respect to the first conditioning unit 14a. When the first pressure-sensing element and the second pressure-sensitive element 13b adopt the same first conditioning unit 14a, arranging the first pressure-sensitive element 13a and the second pressure-sensitive element 13b symmetrically with respect to the first conditioning unit 14a can further reduce the distance between each pressure-sensitive element and the first conditioning unit 14a, improve the signal transmission performance, and improve the accuracy of the detected signal.

[0089] As Figure 4 shown, the first conditioning unit 14a includes a first output channel OUT1 and a second output channel OUT2. The first output channel OUT1 and the second output channel OUT2 are respectively used to output a first detection signal and a second detection signal. For example, the first conditioning unit 14a is a conditioning chip, and the conditioning chip has a first output pin and a second output pin, and these two output pins are the first output channel OUT1 and the second output channel OUT2. The first detection signal is a signal obtained by processing the first pressure electrical signal. The second detection signal is a signal obtained by processing the second pressure electrical signal. In this way, after the conditioning module 14 processes the first pressure electrical signal and the second pressure electrical signal respectively, the first detection signal and the second detection signal are output from the first output channel OUT1 and the second output channel OUT2 respectively, which simplifies the signal processing logic of the conditioning module 14.

[0090] As Figure 4 shown, since the first detection signal and the second detection signal are output separately, the first detection signal can be an analog signal or a digital signal, and the second detection signal can be an analog signal or a digital signal.

[0091] For the convenience of signal transmission of the integrated detection device, the integrated detection device may further include a first transmission cable. The first transmission cable may include a first signal line, a second signal line, a first power line, and a second power line. The first signal line and the second signal line may be electrically connected to the first output channel OUT1 and the second output channel OUT2 respectively. Thus, the first detection signal and the second detection signal may be transmitted to the control module 20 through the first signal line and the second signal line. The first power line and the second power line may be connected to the positive power supply terminal P+ and the negative power supply terminal P- of the first conditioning unit 14a respectively. Thus, the operating power supply may be provided to the conditioning module 14 through the first power line and the second power line.

[0092] For example, 4 connection pins may be provided on the first printed circuit board of the conditioning module 14. The 4 connection pins may be electrically connected to the first output channel OUT1, the second output channel OUT2, the positive power supply terminal P+, and the negative power supply terminal P- respectively. The 4 wires in the first transmission cable may be connected to the 4 connection pins respectively. Thus, the integrated detection device may be connected to the control module 20 through one first transmission cable. Correspondingly, only one socket for connecting the first transmission cable needs to be provided on the control module 20.

[0093] Therefore, the embodiments of the present disclosure may reduce the number of transmission cables, further reduce the cost of the integrated detection device, and improve the assembly efficiency.

[0094] Figure 5 It is a schematic diagram of the electrical connection between the integrated detection device and the control module in another embodiment of the present disclosure. In Figure 5 the embodiment, in the integrated detection device 10, the first pressure-sensitive element 13a and the second pressure-sensitive element 13b are electrically connected to the first input channel and the second input channel of the first conditioning unit 14a respectively. The first conditioning unit 14a includes a third output channel OUT3. The third output channel OUT3 is used to alternately output the first detection signal and the second detection signal. The first detection signal is a signal obtained by processing the first pressure electrical signal, and the second detection signal is a signal obtained by processing the second pressure electrical signal.

[0095] In this embodiment, one third output channel is adopted to output the first detection signal and the second detection signal. For the convenience of output of the detection signal, the third output channel alternately outputs the first detection signal and the second detection signal. "Alternately" may be understood as "intermittently" or "periodically" or "at different preset times". For example, the third output channel alternately outputs the first detection signal and the second detection signal; or, the third output channel periodically outputs the first detection signal and the second detection signal; or, the third output channel outputs the first detection signal at the first preset time and outputs the second detection signal at the second preset time.

[0096] In order to distinguish whether the signal output by the third output channel OUT3 is the first detection signal or the second detection signal, the odd-frame data output by the third output channel OUT3 can be set as the first detection signal, and the even-frame data can be set as the second detection signal. Alternatively, different marker values can be set for the data output by the third output channel OUT3. When the marker value is the first marker value, the signal output by the third output channel OUT3 is the first detection signal; when the marker value is the second marker value, the signal output by the third output channel OUT3 is the second detection signal. In this embodiment, the signal output by the third output channel OUT3 is a digital signal.

[0097] As Figure 5 shown, the integrated detection device may further include a first transmission cable Cable1. The first transmission cable Cable1 includes a signal line, a first power line, and a second power line. The signal line is electrically connected to the third output channel OUT3, and the first power line and the second power line are respectively electrically connected to the positive power supply terminal P+ and the negative power supply terminal P- of the first conditioning unit 14a. Thus, the first detection signal and the second detection signal can be transmitted to the control module 20 through the signal line, and the operating power supply can be provided to the conditioning module 14 through the first power line and the second power line. In this way, compared with Figure 4 the embodiment, the number of core wires of the first transmission cable is reduced, further reducing the product cost.

[0098] Figure 6 This is an electrical connection schematic diagram of the integrated detection device and the control module in another embodiment of the present disclosure. As Figure 6 shown, the integrated detection device may further include a communication bus cable. The communication bus cable is used to output the first detection signal and the second detection signal, and is also used to supply the power obtained from the outside to the first conditioning unit 14a. For example, the LIN bus technology can be adopted. The communication bus cable only requires two core wires, further reducing the cost. In this way, by adopting the communication bus technology and only using a cable with two core wires, not only can the power transmission be realized, but also the detection signal can be transmitted, further reducing the cost. Exemplarily, the LIN bus technology can be adopted. In other embodiments, other types of bus technologies can also be adopted, and it is not limited to the LIN bus.

[0099] Figure 7 This is an electrical connection schematic diagram of the integrated detection device and the control module in another embodiment of the present disclosure, Figure 8 This is an electrical connection schematic diagram of the integrated detection device and the control module in yet another embodiment of the present disclosure. In one embodiment, as Figure 7 and Figure 8As shown, the conditioning module 14 may include a plurality of conditioning units. The number of conditioning units may be the same as the number of pressure-sensitive elements, and the pressure-sensitive elements and the conditioning units are in one-to-one correspondence. Each conditioning unit has an input channel and an output channel. The pressure-sensitive element is electrically connected to the input channel of the corresponding conditioning unit, and the output channel of the conditioning unit outputs a detection signal corresponding to the pressure-sensitive element.

[0100] Exemplarily, as Figure 7 and Figure 8 shown, the conditioning module 14 may include two conditioning units, namely the second conditioning unit 14b and the third conditioning unit 14c. The second conditioning unit 14b includes a first input channel and a first output channel OUT1. The first pressure electrical signal is electrically connected to the first input channel. That is to say, the first pressure electrical signal generated by the first pressure-sensitive element 13a is electrically connected to the first input channel. The first output channel OUT1 is used to output a first detection signal, and the first detection signal is a signal obtained by processing the first pressure electrical signal.

[0101] The third conditioning unit 14c includes a second input channel and a second output channel OUT2. The second pressure electrical signal is electrically connected to the second input channel. That is to say, the second pressure electrical signal generated by the second pressure-sensitive element 13b is electrically connected to the second input channel. The second output channel OUT2 is used to output a second detection signal, and the second detection signal is a signal obtained by processing the second pressure electrical signal.

[0102] In this way, two pressure-sensitive elements correspond to two conditioning units. Each conditioning unit only needs to process the pressure electrical signal generated by the corresponding pressure-sensitive element and output a detection signal, and there will be no mutual interference between the two conditioning units. Although the number of conditioning units is increased, the internal processing flow of the conditioning units is simplified, which is beneficial to improving the detection accuracy.

[0103] Exemplarily, when the number of conditioning units is multiple, each conditioning unit may correspond to a transmission cable, which can avoid mutual interference between the detection signals output by different conditioning units.

[0104] For example, as Figure 7As shown, the integrated detection device further includes a third transmission cable Cable3 and a fourth transmission cable Cable4. Both the third transmission cable Cable3 and the fourth transmission cable Cable4 include signal lines, a first power line, and a second power line. The signal line, the first power line, and the second power line in the third transmission cable are respectively electrically connected to the first output channel OUT1, the positive power supply, and the negative power supply in the second conditioning unit 14b. The signal line, the first power line, and the second power line in the third transmission cable are respectively electrically connected to the second output channel OUT2, the positive power supply, and the negative power supply in the third conditioning unit 14c. That is to say, connecting one conditioning unit to one transmission cable can avoid the mutual interference between different detection signals and further improve the detection accuracy.

[0105] In another embodiment, multiple conditioning units can use one transmission cable, thereby reducing the number of transmission cables and cost. For example, as Figure 8 shown, the integrated detection device further includes a second transmission cable Cable2. The second transmission cable Cable2 includes a first signal line, a second signal line, a first power line, and a second power line. The first signal line and the second signal line are respectively electrically connected to the first output channel OUT1 and the second output channel OUT2. The first power line is electrically connected to the positive power supply of the second conditioning unit 14b and the third conditioning unit 14c, and the second power line is electrically connected to the negative power supply of the second conditioning unit 14b and the third conditioning unit 14c.

[0106] The output channels of multiple conditioning units are respectively connected to multiple signal lines. The positive power supplies of multiple conditioning units can be connected to the same first power line. For example, the first power line is electrically connected to the positive power supply of the second conditioning unit 14b and the third conditioning unit 14c; the negative power supplies of multiple conditioning units can be connected to the same second power line. For example, the second power line is electrically connected to the negative power supply of the second conditioning unit 14b and the third conditioning unit 14c. In this way, not only can the interference between the detection signals output by different conditioning units be reduced, but also the sharing of power lines reduces the number of core wires in the cable and the cost. For example, Figure 8 the second transmission cable in the embodiment only requires 4 core wires.

[0107] For the second transmission cable Cable2, a shielded cable can be selected, which can further reduce the interference of the outside world on the detection signals transmitted in the cable and improve the signal transmission performance of the cable.

[0108] In one embodiment, connectors can be provided on the first printed circuit board where the conditioning unit is arranged. Multiple pins in the connectors are respectively connected to the output channels of the conditioning unit and the positive power supply and the negative power supply through the core wires in the transmission cable. Thus, the transmission cable connects the integrated detection device and the conditioning unit.

[0109] In another embodiment, as Figure 3 shown, the integrated detection device may further include a connector. The connector is plugged into the first printed circuit board. A plurality of pins are provided on the connector, and the plurality of pins can be respectively connected to the output channels of the conditioning unit, the positive power supply, and the negative power supply. The core wires in the transmission cable can be welded to the plurality of pins of the connector.

[0110] To facilitate the extension of the transmission cable, a wire passing hole can be provided on the cover of the integrated detection device, and the wire passing hole is used for the transmission cable to extend out.

[0111] Figure 9 FIG. is a schematic diagram of the electrical connection between the integrated detection device and the control module in another embodiment of the present disclosure. Figure 10 FIG. is a schematic diagram of the electrical connection between the integrated detection device and the control module in yet another embodiment of the present disclosure. In one embodiment, as Figure 9 shown, the integrated detection device may further include a temperature sensing element, and the temperature sensing element can be electrically connected to the conditioning module 14. The conditioning module 14 is further configured to process the temperature electrical signal generated by the temperature sensing element. The detection signal output by the conditioning module 14 includes a pressure detection signal and a temperature detection signal.

[0112] Exemplarily, the first detection signal and the second detection signal in the above can be pressure detection signals reflecting the fluid pressure. The detection signal corresponding to the temperature electrical signal output by the conditioning module 14 can be called a temperature detection signal, and the temperature detection signal is used to reflect the temperature.

[0113] The specific number of the temperature sensing elements can be set according to needs, and can be one or multiple.

[0114] The conditioning module 14 can output the pressure detection signal and the temperature detection signal through one output channel. Both the pressure detection signal and the temperature detection signal are digital signals. The output channel of the conditioning module 14 can sequentially output a plurality of pressure detection signals and a plurality of temperature detection signals. For example, each pressure detection signal and each temperature detection signal are configured with corresponding marker values. According to the marker values, it can be determined whether the detection signal is a pressure detection signal or a temperature detection signal, and it can be determined which pressure sensitive element or which temperature sensing element the detection signal corresponds to. In this way, the integrated detection device only needs a three-core transmission cable, which reduces the cost.

[0115] In another embodiment, as Figure 10 shown, the integrated detection device may further include a temperature sensor. The negative power supply of the temperature sensor is electrically connected to the negative power supply of the conditioning module 14. The integrated detection device further includes a temperature signal wire, and the temperature signal wire is electrically connected to the signal terminal of the temperature sensor.

[0116] Electrically connecting the negative power supply of the temperature sensor to the negative power supply of the conditioning module 14 can save a power cord and reduce costs.

[0117] The temperature-sensitive element can adopt common temperature-sensitive elements, and no specific limitation is made here. The temperature sensor can adopt common devices for detecting temperature, and no specific limitation is made here.

[0118] In other embodiments, the integrated detection device can also integrate other types of sensors, which can be set as needed.

[0119] The integrated detection device according to the embodiments of the present disclosure integrates multiple modules for sensing the pressure of the fluid to be measured in one body, can perform fluid pressure detection on multiple fluid pipelines to be measured, reduces the manufacturing cost of the detection device, saves the assembly time, and improves the assembly efficiency. When the integrated detection device is applied to an air-conditioning system, one integrated detection device can perform pressure detection on the suction pipe and the discharge pipe of the compressor, improving the assembly efficiency of the air-conditioning system and reducing the cost of the air-conditioning system.

[0120] Reference Figures 4 - 10 , the integrated detection device can be connected to the control module 20. The control module 20 can include a second printed circuit board and a main control unit (MCU) disposed on the second printed circuit board. The integrated detection device is connected to the main control unit. The control module 20 can determine the corresponding fluid pressure according to the detection signal output by the integrated detection device. For example, the control module 20 can determine the fluid pressure of the corresponding pipeline according to the first detection signal, and determine the fluid pressure of the corresponding pipeline according to the second detection signal, and then control relevant components such as a compressor or a valve.

[0121] The embodiments of the present disclosure also provide a control system. Reference Figures 4 - 10 , the control system can include the integrated detection device according to the embodiments of the present disclosure, and can also include a control module 20. The integrated detection device is electrically connected to the control module 20. The control module 20 is configured to perform control according to the detection signal output by the integrated detection device. Reference Figure 4 , the control module 20 can determine the fluid pressure of the corresponding pipeline according to the first detection signal output by the integrated detection device, and control the working state of relevant components such as a compressor or a valve. The control module 20 can determine the fluid pressure of another corresponding pipeline according to the second detection signal output by the integrated detection device, and control the working state of relevant components such as a compressor or a valve.

[0122] Reference Figure 9 and Figure 10Moreover, the control module 20 can also determine the temperature detected by the temperature sensing element according to the temperature detection signal output by the integrated detection device, or the control module 20 can determine the temperature detected by the temperature detection device according to the signal received from the temperature signal line, thereby controlling the temperature.

[0123] Figure 11 FIG. is a schematic connection diagram of a control system in another embodiment of the present disclosure. In one embodiment, the control system may further include a signal isolation module 30. The signal isolation module 30 includes an isolation input part and an isolation output part. The integrated detection device 10 is electrically connected to the isolation input part, and the isolation output part is electrically connected to the control module 20.

[0124] In the related art, referring to Figure 2 , a shielding protection metal part is used to achieve EMC protection, resulting in a complex sensor structure and high cost.

[0125] In the embodiment of the present disclosure, a signal isolation module 30 is provided in the control system. The integrated detection device 10 is electrically connected to the isolation input part of the signal isolation module 30, and the control module 20 is electrically connected to the isolation output part of the signal isolation module 30. Thus, the detection signal output by the integrated detection device 10 can be isolated from the control module 20 through the signal isolation module 30, realizing the EMC protection of the integrated detection device. The cost of using the signal isolation module is much lower than the cost of using a shielding protection metal part in the related art. Therefore, the control system in the embodiment of the present disclosure not only realizes EMC isolation but also reduces the cost.

[0126] Exemplarily, the control module 20 may include a second printed circuit board and a main control unit (MCU) disposed on the second printed circuit board. The main control unit may include a main control chip. The signal isolation module may include a signal isolation circuit or an isolation device. The signal isolation module may be disposed on the second printed circuit board, so that there is no need to separately manufacture a printed circuit board for setting the signal isolation module, reducing the number of parts of the control system and improving the assembly efficiency.

[0127] Figure 12 FIG. is a schematic connection diagram of a control system in another embodiment of the present disclosure. Exemplarily, the detection signal output by the integrated detection device is a digital signal. The signal isolation module may include an optocoupler device. The detection signal output by the integrated detection device is coupled to the input part of the optocoupler device, and the control module 20 is coupled to the output part of the optocoupler device. The control module 20 is configured to perform control according to the signal obtained from the output part of the optocoupler device. For example, the control module 20 controls relevant components according to the signal obtained from the output part of the optocoupler device.

[0128] For example, the detection signal output by the integrated detection device can be coupled to the input part of the optocoupler device through the first signal processing circuit. The first signal processing circuit can filter, amplify, and process the detection signal output by the integrated detection device, and process the detection signal into a control signal that matches the input part of the optocoupler device. After the control signal controls the operation of the optocoupler device, an output signal can be obtained from the output part of the optocoupler device. The output part of the optocoupler device can be coupled to the control module 20 through the second signal processing circuit. The second signal processing circuit processes the signal output by the output part of the optocoupler device and processes the output signal into a signal that can be received and recognized by the control module 20. The control module 20 controls relevant components such as a compressor or a valve according to the signal obtained from the second signal processing circuit.

[0129] The specific forms and structures of the first signal processing circuit and the second signal processing circuit can be set according to needs and are not specifically limited herein.

[0130] It should be noted that Figure 12 an output channel for outputting a detection signal of the integrated detection device shown in Figures 4 - 10 any one of them can be adopted. When the integrated detection device has multiple output channels, each output channel can be connected to the control module 20 through an optocoupler device to achieve signal isolation.

[0131] Figure 13 It is a connection schematic diagram of the control system in another embodiment of the present disclosure. Exemplarily, the detection signal output by the integrated detection device is a digital signal. The signal isolation module can include a digital isolator. The digital isolator includes an input part and an output part. As Figure 13 shown, the positive power supply terminal VCC1 and the negative power supply terminal GND1 of the input part are respectively coupled to the positive power supply terminal VCC and the negative power supply terminal GND of the integrated detection device, and the signal terminal of the input part is coupled to the detection signal of the integrated detection device. The positive power supply terminal VCC2, the negative power supply terminal GND2, and the signal terminal of the output part are all coupled to the control module 20. The control module 20 is used to control according to the signal obtained from the signal terminal of the output part. The positive power supply terminal VCC2 and the negative power supply terminal GND2 of the output part can be respectively connected to the positive power supply terminal VCC and the negative power supply terminal GND of the control module 20.

[0132] Exemplarily, as Figure 13As shown, a resistor R1 can be provided between the detection signal of the integrated detection device and the signal terminal of the input section, and a first capacitor C1 can be provided between the signal terminal of the input section and the power supply negative terminal GND1. The value of the resistor R1 and the value of the first capacitor C1 can be set as needed. A resistor R2 can be provided between the signal terminal of the output section of the digital isolator and the control module 20, and a second capacitor C2 can be provided between the signal terminal and the power supply negative terminal GND2. The value of the resistor R2 and the value of the second capacitor C2 can be set as needed.

[0133] Figure 14 It is a connection schematic diagram of the control system in another embodiment of the present disclosure. The detection signal output by the integrated detection device can be an analog signal. The signal isolation module can include an isolation operational amplifier. The isolation operational amplifier includes an input section and an output section. Refer to Figure 14 , the power supply positive terminal VCC1 and the power supply negative terminal GND1 of the input section of the isolation operational amplifier are respectively coupled to the power supply positive terminal VCC and the power supply negative terminal GND of the integrated detection device, and the two signal terminals of the input section are respectively coupled to the detection signal of the integrated detection device and the power supply negative terminal GND. The power supply positive terminal, the power supply negative terminal, and the two signal terminals of the output section of the isolation operational amplifier are all coupled to the control module 20, and the control module 20 is configured to perform control according to the signals obtained from the two signal terminals of the output section.

[0134] For example, the two signal terminals of the input section of the isolation operational amplifier are coupled to the detection signal of the integrated detection device and the power supply negative terminal GND through a third signal processing circuit. Thus, the detection signal output by the integrated detection device is processed by the third signal processing circuit and then transmitted to the two signal terminals of the input section of the isolation operational amplifier. The signals output by the two signal terminals of the output section of the isolation operational amplifier are transmitted to the control module 20 after passing through a fourth signal processing circuit, and the control module 20 controls components such as a compressor or a valve according to the signals obtained from the two signal terminals of the output section of the isolation operational amplifier. The third signal processing circuit can process the detection signal output by the integrated detection device into a signal adapted to the isolation operational amplifier. The fourth signal processing circuit can process the signal output by the output section of the isolation operational amplifier into a signal that can be received and recognized by the control module 20.

[0135] The specific forms and structures of the third signal processing circuit and the fourth signal processing circuit can be set as needed and are not specifically limited herein.

[0136] Generally, refer to Figures 4 - 10 , the power supply required by the conditioning module 14 in the integrated detection device can be directly provided by an external power supply or can be provided by the control module 20.

[0137] Figure 15Schematic diagram of the power supply circuit for the control module and the integrated detection device in an embodiment of the present disclosure. Exemplarily, the control module 20 and the integrated detection device may adopt the same power supply. For example, the control module 20 may include a power socket for receiving the power supply, and the positive power supply terminal and the negative power supply terminal of the integrated detection device are respectively coupled to the positive power supply terminal and the negative power supply terminal of the power socket. Thus, the integrated detection device and the control module 20 adopt the same power supply. The control system may further include a power module, and the power module may be a switching power supply. As Figure 15 shown, the switching power supply can convert alternating current into direct current. The switching power supply includes an AC input terminal and a DC output terminal. The alternating current is connected to the AC input terminal of the switching power supply to supply the alternating current to the switching power supply. The switching power supply converts the alternating current into direct current inside and supplies the direct current to the control module 20 and the integrated detection device. Inside the switching power supply, the alternating current passes through a filter circuit and a rectifier circuit and is connected to the primary winding S1. There is no electrical connection between the primary winding S1 and the output winding S2.

[0138] Figure 16 Schematic diagram of the power supply circuit for the control module and the integrated detection device in another embodiment of the present disclosure. In one embodiment, the control module 20 includes a power socket for receiving the power supply. Thus, the power module can supply power to the power socket for the control module 20 to use. The power module may include a switching power supply. As Figure 16 shown, the switching power supply includes an AC input terminal and a DC output terminal. The alternating current is connected to the AC input terminal of the switching power supply to supply the alternating current to the switching power supply. The switching power supply converts the alternating current into direct current inside and supplies the direct current to the control module 20. Generally, in order to ensure that the switching power supply can pass the EMC test, a third capacitor C3 may be provided between the primary winding S1 and the output winding S2 inside the switching power supply, or a resistor R3 and a fourth capacitor C4 may be provided between the primary winding S1 and the output winding S2. If the direct current power output by the output winding S2 of the switching power supply is directly supplied to the integrated detection device, it will cause the withstand voltage performance of the integrated detection device to decline and fail to meet the safety regulations test.

[0139] To meet the safety regulations test, the control system may further include a DC isolation power supply. As Figure 16As shown, the two input power pins of the DC isolation power supply are respectively coupled to the two power pins of the power socket of the control module 20, and the two output power pins of the DC isolation power supply are respectively coupled to the positive power supply and the negative power supply of the integrated detection device team. Exemplarily, the DC isolation power supply includes an input winding S3 and an output winding S4. The two ends of the input winding S3 are respectively coupled to the two power pins of the power socket of the control module 20. The output winding S4 is used to supply power to the integrated detection device, and the two ends of the output winding S4 can be coupled to the positive power supply and the negative power supply of the conditioning module 14 of the integrated detection device to supply power to the conditioning module 14. Such a power supply method, for the integrated detection device, is equivalent to setting a shielding protection metal part in the integrated detection device, improving the withstand voltage performance of the integrated detection device, improving the EMC performance of the integrated detection device, and having a lower cost compared with the related technology.

[0140] Figure 17 This is a schematic diagram of the power supply circuit of the control module and the integrated detection device in another embodiment of the present disclosure. In one embodiment, as Figure 17 shown, the control system includes a power supply module, and the power supply module includes a switching power supply. The switching power supply includes a primary winding S1, a first-stage output winding S2, and a second-stage output winding S3. The primary winding S1 is coupled to the alternating current. The first-stage output winding S2 of the power supply module can output a first DC power supply, and the first-stage output winding S2 is used to supply power to the control module 20. In order to ensure that the switching power supply can pass the EMC test, a third capacitor C3 can be provided between the primary winding S1 and the first-stage output winding S2 inside the switching power supply, or a resistor R3 and a fourth capacitor C4 can be provided between the primary winding S1 and the first-stage output winding S2. The second-stage output winding S3 of the power supply module is coupled to the positive power supply and the negative power supply of the integrated detection device, and the second-stage output winding S3 provides a second DC power supply to the integrated detection device.

[0141] Refer to Figures 15 - 17 , inside the switching power supply, the alternating current is connected to the primary winding S1 through a filter circuit and a rectifier circuit. The various parts of the circuit inside the switching power supply can adopt conventional techniques in the art and will not be specifically limited here.

[0142] The control system may further include a compressor. The first pipe body in the integrated detection device can be communicated with the suction pipe of the compressor, and the second pipe body can be communicated with the discharge pipe of the compressor. The control module is used to control the operation of the compressor according to the detection signals (such as the first detection signal and the second detection signal) output by the integrated detection device. The control module can obtain the air pressure of the suction pipe and the discharge pipe of the compressor according to the first detection signal and the second detection signal, and then can control the operation of the compressor according to the air pressure.

[0143] An embodiment of the present disclosure further provides an air conditioning system, which includes the integrated detection device in the embodiment of the present disclosure, or includes the control system in the embodiment of the present disclosure.

[0144] The air conditioning system adopts the integrated detection device of the embodiment of the present disclosure. An integrated detection device can simultaneously detect the air pressures of the compressor suction pipe and the discharge pipe, reducing the number of pressure sensors used, reducing the assembly steps of the entire system, improving the assembly efficiency, and reducing the cost.

[0145] In the description of this specification, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present disclosure.

[0146] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present disclosure, the meaning of "plurality" is two or more unless otherwise specifically defined.

[0147] In the present disclosure, unless otherwise clearly defined and limited, the terms "install", "connect", "couple", "fix", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0148] In this disclosure, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include contact between the first and second features not directly but through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and diagonally above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and diagonally below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0149] The above disclosure provides many different embodiments or examples for implementing different structures of the present disclosure. To simplify the present disclosure, the components and settings of specific examples are described above. Of course, they are merely examples and are not intended to limit the present disclosure. In addition, the present disclosure may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0150] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of various changes or substitutions. Different parts in different embodiments can be combined with each other without conflict, and these should all be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. An integrated detection device, characterized in that: include: A main body is provided with a plurality of cavities independent of each other; A plurality of tubes, connected to the plurality of cavities in a one-to-one correspondence, and the plurality of tubes are used to connect a plurality of fluid pipelines to be tested with the corresponding cavities; A plurality of pressure sensitive elements, corresponding one to one with the plurality of cavities, the pressure sensitive elements being in contact with the fluid to be measured in the corresponding cavities, and being used to sense the pressure of the fluid to be measured and generate corresponding pressure electrical signals; The conditioning module is electrically connected to the multiple pressure sensitive elements respectively, and is used to process the pressure electrical signals generated by the pressure sensitive elements and output multiple detection signals. The multiple detection signals correspond to the multiple pressure sensitive elements one by one, and the detection signals are signals obtained by processing the pressure electrical signals generated by the pressure sensitive elements.

2. The integrated detection device according to claim 1, characterized in that: The plurality of cavities include a first cavity and a second cavity, the plurality of tubes include a first tube and a second tube, and the plurality of pressure sensitive elements include a first pressure sensitive element and a second pressure sensitive element; The first tube body and the second tube body are communicated with the first cavity and the second cavity respectively; The first pressure sensitive element and the second pressure sensitive element are in contact with the fluid to be measured in the first cavity and the second cavity, respectively, and generate corresponding first pressure electrical signals and second pressure electrical signals, respectively; The conditioning module is electrically connected to the first pressure sensitive element and the second pressure sensitive element respectively, and is used to process the first pressure electrical signal and the second pressure electrical signal, and output a first detection signal and a second detection signal.

3. The integrated detection device according to claim 2, characterized in that: The conditioning module comprises a first conditioning unit, the first conditioning unit comprises a first input channel and a second input channel, the first pressure sensitive element and the second pressure sensitive element are electrically connected to the first input channel and the second input channel respectively.

4. The integrated detection device according to claim 3, characterized in that: The first conditioning unit includes a first output channel and a second output channel, and the first output channel and the second output channel are used to output the first detection signal and the second detection signal, respectively.

5. The integrated detection device according to claim 4, characterized in that: It also includes a first transmission cable, which includes a first signal line, a second signal line, a first power line and a second power line, the first signal line and the second signal line are electrically connected to the first output channel and the second output channel, respectively, and the first power line and the second power line are electrically connected to the positive power supply and the negative power supply of the first conditioning unit, respectively.

6. The integrated detection device according to claim 3, characterized in that: The first conditioning unit includes a third output channel, and the third output channel is used to alternately output the first detection signal and the second detection signal.

7. The integrated detection device according to claim 6, characterized in that: It also includes a first transmission cable, which includes a signal line, a first power line and a second power line, the signal line is electrically connected to the third output channel, and the first power line and the second power line are electrically connected to the positive power supply and the negative power supply of the first conditioning unit respectively.

8. The integrated detection device according to claim 3, characterized in that: It also includes a communication bus cable, which is used to output the first detection signal and the second detection signal, and is also used to provide power obtained from the outside to the first conditioning unit.

9. The integrated detection device according to claim 2, characterized in that: The conditioning module includes a second conditioning unit and a third conditioning unit, the second conditioning unit includes a first input channel and a first output channel, the first pressure electrical signal is electrically connected to the first input channel, the first output channel is used to output a first detection signal, and the first detection signal is a signal processed from the first pressure electrical signal; The third conditioning unit includes a second input channel and a second output channel. The second pressure electric signal is electrically connected to the second input channel. The second output channel is used to output a second detection signal. The second detection signal is a signal obtained by processing the second pressure electric signal.

10. The integrated detection device according to claim 9, characterized in that: The integrated detection device also includes a second transmission cable, which includes a first signal line, a second signal line, a first power line, and a second power line. The first signal line and the second signal line are electrically connected to the first output channel and the second output channel respectively, the first power line is electrically connected to the positive power pole of the second conditioning unit and the third conditioning unit, and the second power line is electrically connected to the negative power pole of the second conditioning unit and the third conditioning unit.

11. The integrated detection device according to claim 2, characterized in that: The detection range of the first pressure sensitive element is 0-2 MPa; the detection range of the second pressure sensitive element is 3.5 MPa-4.5 MPa.

12. The integrated detection device according to claim 1, characterized in that: The multiple cavities are arranged in parallel, the pressure sensitive element is installed at one end of the cavity away from the tube body, and the pressure sensitive element is sealed and connected to the cavity; the conditioning module is located on a side of the pressure sensitive element away from the cavity; The integrated detection device further comprises a cover body, wherein the cover body is disposed on the main body, and the conditioning module is located between the pressure sensitive element and the cover body.

13. The integrated detection device according to claim 1, characterized in that: It also includes a temperature sensing element, which is electrically connected to the conditioning module. The conditioning module is also used to process the temperature electrical signal generated by the temperature sensing element. The detection signal output by the conditioning module includes a pressure detection signal and a temperature detection signal.

14. The integrated detection device according to claim 1, characterized in that: It also includes a temperature detection device, the negative power pole of the temperature detection device is electrically connected to the negative power pole of the conditioning module, and the integrated detection device also includes a temperature signal line, which is electrically connected to the signal end of the temperature detection device.

15. A control system, characterized in that: It comprises the integrated detection device according to any one of claims 1 to 14, and also comprises a control module electrically connected to the integrated detection device, wherein the control module is used to perform control according to a detection signal output by the integrated detection device.

16. The control system according to claim 15, characterized in that: It also includes a signal isolation module, which includes an isolation input part and an isolation output part. The integrated detection device is electrically connected to the isolation input part, and the isolation output part is electrically connected to the control module.

17. The control system according to claim 16, characterized in that: The detection signal output by the integrated detection device is a digital signal, and the signal isolation module meets the following requirements: The signal isolation module includes an optocoupler device, the detection signal output by the integrated detection device is coupled to the input part of the optocoupler device, the control module is coupled to the output part of the optocoupler device, and the control module is used to control according to the signal obtained from the output part of the optocoupler device; or, The signal isolation module includes a digital isolator, which includes an input part and an output part. The positive power pole and the negative power pole of the input part are respectively coupled to the positive power pole and the negative power pole of the integrated detection device, and the signal end of the input part is coupled to the detection signal of the integrated detection device; the positive power pole, the negative power pole and the signal end of the output part are coupled to the control module, and the control module is used to perform control according to the signal obtained from the signal end of the output part.

18. The control system according to claim 16, characterized in that: The detection signal output by the integrated detection device is an analog signal. The signal isolation module includes an isolation operational amplifier, and the isolation operational amplifier includes an input part and an output part. The positive power supply and the negative power supply of the input part are respectively coupled to the positive power supply and the negative power supply of the integrated detection device, and the two signal terminals of the input part are respectively coupled to the detection signal and the negative power supply of the integrated detection device; the positive power supply, the negative power supply and the two signal terminals of the output part are all coupled to the control module, and the control module is used to perform control according to the signals obtained from the two signal terminals of the output part.

19. The control system according to claim 15, characterized in that: The control module comprises a power socket for receiving a power supply, and the positive power electrode and the negative power electrode of the integrated detection device are respectively coupled to the positive power electrode and the negative power electrode of the power socket; or, The control module includes a power socket for receiving a power supply, and the control system also includes a DC isolation power supply, wherein two input power pins of the DC isolation power supply are respectively coupled to two power pins of the power socket, and two output power pins of the DC isolation power supply are respectively coupled to a positive power supply electrode and a negative power supply electrode of the integrated detection device team; The control system also includes a power supply module, which includes a primary winding, a primary output winding and a secondary output winding, wherein the primary winding of the power supply module is coupled to alternating current, the primary output winding of the power supply module is used to supply power to the control module, and a capacitor is arranged between the primary output winding and the primary winding; the secondary output winding of the power supply module is coupled to the positive power supply electrode and the negative power supply electrode of the integrated detection device.

20. The control system according to claim 15, characterized in that: It also includes a compressor, the first tube body in the integrated detection device is connected to the return air pipe of the compressor, the second tube body in the integrated detection device is connected to the exhaust pipe of the compressor, and the control module is used to control the operation of the compressor according to the detection signal output by the integrated detection device.

21. An air conditioning system, characterized in that: An integrated detection device comprising any one of claims 1-14; or a control system comprising any one of claims 15-20.

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