Integrated detection apparatus, control system, and air conditioning system

Abstract

An integrated detection apparatus, comprising: a main body (11), provided with a plurality of cavities independent of each other; a plurality of fluid channels (12), one end of each fluid channel (12) being in communication with one of the plurality of cavities, and the other end of each fluid channel (12) being in communication with one of a plurality of fluid pipes to be measured; a plurality of pressure measurement elements (13), each cavity being provided with at least one pressure measurement element (13), and the pressure measurement element (13) sensing the pressure of said corresponding fluid pipe and generating a corresponding pressure electrical signal; and a signal conditioning module (14), separately electrically connected to the plurality of pressure measurement elements (13), wherein the signal conditioning module (14) receives the plurality of pressure electrical signals generated by the plurality of pressure measurement elements (13) and outputs a plurality of measurement signals, and the measurement signals are signals obtained by processing the pressure electrical signals generated by the pressure measurement elements (13). The integrated detection apparatus reduces product costs and improves assembly efficiency. Further provided are a control system and an air conditioning system.

Description

Integrated detection device, control system and air conditioning system

[0001] The present disclosure claims priority to Chinese Patent Application No. 202411117698.5, filed on August 14, 2024, entitled "Integrated detection device, control system and air conditioning system", and Chinese Patent Application No. 202421972139.8, filed on August 14, 2024, entitled "Integrated detection device, control system and air conditioning system", the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of sensing, and in particular, to an integrated detection device, a control system and an air conditioning system. BACKGROUND

[0003] A plurality of pressure sensors are usually arranged in a refrigerant circulation loop, each pressure sensor is electrically connected to a control mainboard through an electrical cable, the plurality of pressure sensors detect pressures at different positions, each pressure sensor detects pressures at different positions in the refrigerant circulation loop and feeds back to the control mainboard, and the control mainboard controls the compressor according to the pressure values. For example, the exhaust pipe of the compressor is a relatively high-pressure pipeline in the refrigerant circulation loop, and a pressure sensor is arranged on the exhaust pipe to detect the exhaust pressure. The gas return pipe of the compressor is a relatively low-pressure pipeline in the refrigerant circulation loop, and a pressure sensor is arranged on the gas return pipe to detect the gas return pressure.

[0004] However, the plurality of pressure sensors are independent sensors, in order to arrange the plurality of sensors, corresponding mounting structures are arranged on the to-be-detected pipelines of the refrigerant circulation loop, and a damping reinforcing sleeve needs to be installed to prevent the pressure sensor from vibrating, and each pressure sensor has a corresponding electrical cable, and corresponding connectors are arranged on the control mainboard to connect the electrical cables of the pressure sensors. The installation personnel need to install the pressure sensors to the refrigerant circulation pipelines one by one, and then connect the electrical cables to the connectors on the control mainboard one by one, which reduces the assembly efficiency and increases the cost of the air conditioning system. SUMMARY

[0005] The 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.

[0006] As a first aspect of the embodiments of the present disclosure, the embodiments of the present disclosure provide an integrated detection device, comprising:

[0007] a main body provided with a plurality of cavities independent of each other;

[0008] a plurality of fluid channels, each of the fluid channels being in communication with one of the plurality of cavities at one end and one of a plurality of fluid lines to be tested at the other end;

[0009] a plurality of pressure detecting elements, each of the cavities being provided with at least one of the pressure detecting elements, the pressure detecting elements sensing pressure of the corresponding fluid line to be tested and generating corresponding pressure electrical signals;

[0010] a conversion electrical module electrically connected to the plurality of pressure detecting elements, the conversion electrical module receiving the plurality of pressure electrical signals generated by the plurality of pressure detecting elements and outputting a plurality of detection signals, the detection signals being signals processed from the pressure electrical signals generated by the pressure detecting elements.

[0011] In some embodiments, the plurality of cavities includes a first cavity and a second cavity, the plurality of fluid channels includes a first fluid channel and a second fluid channel, and the plurality of pressure detecting elements includes a first pressure detecting element and a second pressure detecting element.

[0012] The first fluid channel is in communication with the first cavity and one of the fluid lines to be tested, and the second fluid channel is in communication with the second cavity and another of the fluid lines to be tested.

[0013] The first pressure detecting element is received in the first cavity, detects pressure of the one of the fluid lines to be tested and generates a first pressure electrical signal, and the second pressure detecting element is received in the second cavity, detects pressure of the another of the fluid lines to be tested and generates a second pressure electrical signal.

[0014] The conversion electrical module is electrically connected to the first pressure detecting element and the second pressure detecting element, and is configured to process the first pressure electrical signal and the second pressure electrical signal and output a first detection signal and a second detection signal.

[0015] In some embodiments, the conversion electrical module includes a first input end and a second input end, and the first pressure detecting element and the second pressure detecting element are electrically connected to the first input end and the second input end, respectively.

[0016] In some embodiments, the conversion electrical module includes a first output end and a second output end, and the first output end and the second output end are configured to output the first detection signal and the second detection signal, respectively.

[0017] In some embodiments, the first transmission cable further comprises 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 with the first output end and the second output end respectively, and the first power line and the second power line are electrically connected with the positive and negative power supply of the adapter electric module respectively.

[0018] In some embodiments, the adapter electric module further comprises a third output end, the third output end is used for alternately outputting the first detection signal and the second detection signal.

[0019] In some embodiments, the first transmission cable further comprises a signal line, a first power line and a second power line, the signal line is electrically connected with the third output end, and the first power line and the second power line are electrically connected with the positive and negative power supply of the adapter electric module respectively.

[0020] In some embodiments, the communication bus cable is used for outputting the first detection signal and the second detection signal, and is also used for providing the power supply obtained from the outside to the adapter electric module.

[0021] In some embodiments, two adapter electric modules are included, one of which comprises a first input end and a first output end, the first pressure detection element is electrically connected with the first input end, and the first output end is used for outputting the first detection signal, the first detection signal being a signal processed from the first pressure electric signal.

[0022] The other adapter electric module comprises a second input end and a second output end, the second pressure detection element is electrically connected with the second input end, and the second output end is used for outputting the second detection signal, the second detection signal being a signal processed from the second pressure electric signal.

[0023] In some embodiments, the integrated detection device further comprises a second transmission cable, the second transmission cable comprises 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 with the first output end and the second output end respectively, the first power line is electrically connected with the positive power supply of the two adapter electric modules, and the second power line is electrically connected with the negative power supply of the two adapter electric modules.

[0024] In some embodiments, the detection range of the first pressure detection element is 0-2 MPa, and the detection range of the second pressure detection element is 3.5-4.5 MPa.

[0025] In some embodiments, the plurality of cavities are arranged in parallel, the pressure detection element is installed at one end of the cavity away from the fluid channel, and the pressure detection element is in sealed connection with the cavity; the adapter electrical module is located on the side of the pressure detection element away from the cavity.

[0026] The integrated detection device further comprises a cover body arranged on the main body, and the adapter electrical module is located between the pressure detection element and the cover body.

[0027] In some embodiments, a temperature sensor is further included, the temperature sensor is in electrical connection with the adapter electrical module, the adapter electrical module is further used for processing a temperature electrical signal generated by the temperature sensor, and the detection signal output by the adapter electrical module comprises a pressure detection signal and a temperature detection signal.

[0028] In some embodiments, a temperature sensor is further included, the negative electrode of the power supply of the temperature sensor is in electrical connection with the negative electrode of the power supply of the adapter electrical module, and the integrated detection device further comprises a temperature signal line in electrical connection with the signal end of the temperature sensor.

[0029] In some embodiments, the main body comprises an outer structural member, the outer structural member comprises a metal shell and an insulating shell wrapped around the outer circumferential side of the metal shell.

[0030] The metal shell comprises two independently arranged cavities, the bottom wall of the metal shell is provided with a plurality of openings, a plurality of fluid channels are inserted into and communicated with the openings, and one side of each cavity is in communication with the openings, and the other side of the cavity is in communication with the pressure detection element.

[0031] In some embodiments, the adapter electrical module comprises an FPC adapter plate, a plurality of terminals and a plurality of cables, the FPC adapter plate is in electrical conduction with the plurality of pressure detection elements, the plurality of terminals are in electrical conduction with the FPC adapter plate, and the plurality of cables and the plurality of terminals are in one-to-one electrical conduction.

[0032] In some embodiments, the FPC adapter plate comprises a grounding portion in ground communication with the metal shell; and the FPC adapter plate is in electrical connection with a control module via a signal isolation module through the terminals and the cables.

[0033] In some embodiments, the outer structural member further comprises one metal shielding shell, a plurality of independent cavities are arranged in the one metal shielding shell, the FPC adapter plate has a grounding portion in ground communication with the one metal shielding shell.

[0034] Alternatively, the outer structure further comprises a plurality of metal shielding shells, each of the metal shielding shells is internally provided with a pressure detection element, and the pressure detection element in each of the metal shielding shells and the bottom wall of the metal shielding shell form the cavity; the number of the FPC adapter plates is plural, and each of the FPC adapter plates is correspondingly arranged in one of the metal shielding shells, and the grounding part of each of the FPC adapter plates is grounded to one of the metal shielding shells.

[0035] In some embodiments, the fluid channel is a metal connecting pipe, the fluid pipeline to be detected is grounded, and the fluid channel is in communication with the fluid pipeline to be detected and is grounded.

[0036] As a second aspect of the embodiments of the present disclosure, a control system comprises the integrated detection device of the first aspect, and further comprises a control module electrically connected to the integrated detection device, wherein the control module is configured to control according to the detection signal output by the integrated detection device.

[0037] In some embodiments, the control system further comprises a signal isolation module, wherein the signal isolation module comprises 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.

[0038] In some embodiments, the detection signal output by the integrated detection device is a digital signal, and the signal isolation module satisfies:

[0039] The signal isolation module comprises an optocoupler, the detection signal output by the integrated detection device is coupled to the input part of the optocoupler, the control module is coupled to the output part of the optocoupler, and the control module is configured to control according to the signal obtained from the output part of the optocoupler; or,

[0040] The signal isolation module comprises a digital isolator, the digital isolator comprises an input part and an output part, the power positive electrode and the power negative electrode of the input part of the digital isolator are coupled to the power positive electrode and the power negative electrode of the integrated detection device respectively, and the signal end of the input part of the digital isolator is coupled to the detection signal of the integrated detection device; the power positive electrode, the power negative electrode and the signal end of the output part of the digital isolator are coupled to the control module, and the control module is configured to control according to the signal obtained from the signal end of the output part of the digital isolator.

[0041] In some embodiments, the detection signal output by the integrated detection device is an analog signal, the signal isolation module comprises an isolation operational amplifier, the isolation operational amplifier comprises an input part and an output part, the positive power supply terminal and the negative power supply terminal of the input part are coupled to the positive power supply terminal and the negative power supply terminal of the integrated detection device respectively, and two signal terminals of the input part are coupled to the detection signal and the negative power supply terminal of the integrated detection device respectively; the positive power supply terminal, the negative power supply terminal and the two signal terminals of the output part are coupled to the control module, and the control module is configured to control according to the signals obtained from the two signal terminals of the output part.

[0042] In some embodiments, the control module comprises a power socket for receiving a power supply, and the positive power supply terminal and the negative power supply terminal of the integrated detection device are coupled to the positive power supply terminal and the negative power supply terminal of the power socket respectively; or,

[0043] The control module comprises a power socket for receiving a power supply, and the control system further comprises a DC isolation power supply, two input power supply pins of the DC isolation power supply are coupled to two power supply pins of the power socket respectively, and two output power supply pins of the DC isolation power supply are coupled to the positive power supply terminal and the negative power supply terminal of the integrated detection device respectively.

[0044] The control system further comprises a power module, the power module comprises a primary winding, a primary output winding and a secondary output winding, wherein the primary winding of the power module is coupled to an alternating current, the primary output winding of the power module is configured 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 module is coupled to the positive power supply terminal and the negative power supply terminal of the integrated detection device.

[0045] In some embodiments, a compressor is further included, a first fluid channel in the integrated detection device is in communication with a return gas pipe of the compressor, a second fluid channel in the integrated detection device is in communication with an exhaust pipe of the compressor, and the control module is configured to control the operation of the compressor according to the detection signal output by the integrated detection device.

[0046] As a third aspect of the embodiments of the present disclosure, an air conditioning system comprises the integrated detection device of the first aspect described above; or, the control system of the second aspect described above.

[0047] In some embodiments, a heat source unit, a load unit, and a gas connection pipe and a liquid connection pipe in communication with the heat source unit and the load unit are included, and the heat source unit, the load unit, the gas connection pipe and the liquid connection pipe form a refrigerant circulation loop.

[0048] The integrated detection device or the control system is located in the heat source unit.

[0049] In some embodiments, the heat source unit includes a compressor, a four-way valve, and a heat source heat exchanger, and the load unit includes a load heat exchanger;

[0050] The four-way valve includes a first port, a second port, a third port and a fourth port. The first port is connected to the compressor exhaust port via an exhaust pipe, the second port is connected to the heat source heat exchanger via a piping, the third port is connected to the compressor return port via a return pipe, and the fourth port is connected to the gas connection pipe via a piping.

[0051] One of the multiple fluid channels is connected to the exhaust pipe or the connecting pipe forming the first interface, and another of the multiple fluid channels is connected to the return pipe or the connecting pipe forming the second interface.

[0052] The technical solution of this disclosure provides an integrated detection device that integrates multiple modules for sensing the pressure of the fluid under test into a single main body. This allows for fluid pressure detection across multiple fluid pipelines, reducing manufacturing costs, saving assembly time, and improving assembly efficiency. When this integrated detection device is applied to an air conditioning system, a single device can perform pressure detection on the compressor's return and exhaust pipes, improving assembly efficiency and reducing the cost of the air conditioning system.

[0053] The above overview is for illustrative purposes only and is not intended to be limiting in any way. Further aspects, embodiments, and features of this disclosure will become readily apparent from the accompanying drawings and the following detailed description, in addition to the illustrative aspects, embodiments, and features described above. Attached Figure Description

[0054] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments according to this disclosure and should not be construed as limiting the scope of this disclosure.

[0055] Figure 1 is a schematic diagram of the pressure control connection in an air conditioning system;

[0056] Figure 2 is an exploded structural diagram of a pressure sensor;

[0057] Figure 3 is an exploded structural diagram of an integrated detection device in one embodiment of this disclosure;

[0058] Figure 4 is a schematic diagram of the structure of an integrated detection device in one embodiment of this disclosure;

[0059] Fig. 5 is a schematic diagram of the electrical connection of the integrated detection device and the control module according to an embodiment of the present disclosure;

[0060] Fig. 6 is a schematic diagram of the circuit structure of the adapter module according to an embodiment of the present disclosure;

[0061] Fig. 7 is another schematic diagram of the circuit structure of the adapter module according to an embodiment of the present disclosure;

[0062] Fig. 8 is a schematic diagram of the electrical connection of the integrated detection device and the control module according to another embodiment of the present disclosure;

[0063] Fig. 9 is a schematic diagram of the electrical connection of the integrated detection device and the control module according to another embodiment of the present disclosure;

[0064] Fig. 10 is a schematic diagram of the electrical connection of the integrated detection device and the control module according to another embodiment of the present disclosure;

[0065] Fig. 11 is a schematic diagram of the electrical connection of the integrated detection device and the control module according to another embodiment of the present disclosure;

[0066] Fig. 12 is a schematic diagram of the electrical connection of the integrated detection device and the control module according to another embodiment of the present disclosure;

[0067] Fig. 13 is a schematic diagram of the electrical connection of the integrated detection device and the control module according to another embodiment of the present disclosure;

[0068] Fig. 14 is a schematic diagram of the connection of the control system according to another embodiment of the present disclosure;

[0069] Fig. 15 is a schematic diagram of the structure of the control system according to another embodiment of the present disclosure;

[0070] Fig. 16 is a schematic diagram of the structure of the integrated detection device according to another embodiment of the present disclosure;

[0071] Fig. 17 is a schematic diagram of the fluid passage and the fluid pipeline to be detected according to an embodiment of the present disclosure;

[0072] Fig. 18 is a schematic diagram of the fluid passage and the fluid pipeline to be detected according to another embodiment of the present disclosure;

[0073] Fig. 19 is a schematic diagram of the connection of the control system according to another embodiment of the present disclosure;

[0074] Fig. 20 is a schematic diagram of the connection of the control system according to another embodiment of the present disclosure;

[0075] Fig. 21 is a schematic diagram of the connection of the control system according to another embodiment of the present disclosure;

[0076] Fig. 22 is a schematic diagram of the connection of the control system according to another embodiment of the present disclosure;

[0077] Fig. 23 is a schematic diagram of a power supply circuit of a control module and an integrated detection device according to an embodiment of the present disclosure;

[0078] Fig. 24 is a schematic diagram of a power supply circuit of a control module and an integrated detection device according to another embodiment of the present disclosure;

[0079] Fig. 25 is a schematic diagram of a power supply circuit of a control module and an integrated detection device according to another embodiment of the present disclosure;

[0080] Fig. 26 is a schematic diagram of a structure of an air conditioning system according to an embodiment of the present disclosure;

[0081] Fig. 27 is a schematic diagram of a connection between an integrated detection device and a four-way valve according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0082] In the following, only certain 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 combined arbitrarily without conflict. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0083] Fig. 1 is a schematic diagram of a pressure control connection in an air conditioning system, and Fig. 2 is a schematic diagram of an exploded structure of a pressure sensor. As shown in Fig. 1, in an air conditioning system, a low-pressure pressure sensor is usually arranged at a return pipe of a compressor, and a high-pressure pressure sensor is arranged at an exhaust pipe of the compressor. The low-pressure pressure sensor and the high-pressure pressure sensor are respectively connected to a control main board through three-core cables. The control main board can include a printed circuit board and a master control unit (MCU) arranged on the printed circuit board. The master control unit can be a master control chip or a modularized circuit. The control main board provides a direct current power supply to the pressure sensors through the cables. The direct current power supply can be 5V or 3.3V. The pressure sensors output pressure detection signals corresponding to the actual pressures sensed by the pressure sensors according to the sensed actual pressures. The pressure detection signals can be analog signals or digital signals conforming to a certain protocol, and are provided to the control main board. The control main board obtains the pressures of the return pipe and the exhaust pipe of the compressor according to the received pressure detection signals, and controls the working state of the compressor.

[0084] The pressure sensor and its structure are shown in FIG.2. The pressure sensor includes a fluid channel, an outer structure, a sealing ring, a shielding metal piece, a pressure detection element, a circuit board, etc. The outer structure is provided with a cavity, the fluid channel is in communication with the cavity, and the other end of the fluid channel is used to communicate with the pipeline to receive the fluid to be measured. The shielding metal piece is used to realize electromagnetic compatibility (EMC). The pressure detection element can include a microelectro mechanical system (MEMS), ceramic, etc. The circuit board includes a conditioning chip and its peripheral circuit. The common pressure detection elements include a resistance type and a capacitance type. The pressure detection element is used to convert the pressure in the pipeline into a weak electric signal. The conditioning chip is used to process the weak electric signal and feed back the processed signal to the control mainboard.

[0085] Generally, before the product is shipped, the pressure detection element of each pressure sensor needs to be calibrated and tested, and the corresponding parameters are written into the corresponding conditioning chip. For the shielding metal piece, some pressure sensors are provided with a shielding metal piece, and some are not provided with a shielding metal piece. As shown in FIG.2, the outer structure is provided with a cavity, and the shielding metal piece is located in the cavity. The shielding metal piece is insulated from the outer structure. Generally, an insulating paper is arranged between the shielding metal piece and the outer structure, or an insulating layer is sprayed on the inner side wall of the outer structure to realize the insulation between the shielding metal piece and the outer structure.

[0086] In the pressure sensor provided with the shielding metal piece, the positive and negative power supplies on the circuit board are respectively connected to the shielding metal piece through capacitors. For the pressure sensor without the shielding metal piece, the positive and negative power supplies on the circuit board are respectively connected to the outer structure through capacitors. Generally, the outer structure is connected with the fluid pipe to be measured, and the fluid pipeline is connected to the ground. Therefore, the pressure sensor without the shielding metal piece has lower voltage resistance and lower cost, while the pressure sensor with the shielding metal piece has higher voltage resistance and higher cost.

[0087] In the related art, in order to improve the voltage resistance of the pressure sensor, the shielding metal piece is arranged in the pressure sensor, which results in higher cost. Moreover, the plurality of pressure sensors are independent of each other and are independently assembled, which reduces the assembly efficiency, increases the assembly cost, and further increases the cost of the air conditioning system.

[0088] In order to solve some problems in the related art, the present disclosure provides an integrated detection device, which can also be called an integrated sensor.

[0089] Figure 3 is an exploded structural schematic diagram of an integrated detection device according to an embodiment of the present disclosure. As shown in Figure 3, the integrated detection device can include a main body 11, a plurality of fluid channels 12, a plurality of pressure detection elements 13, and an electrical conversion module 14. The main body 11 is provided with a plurality of cavities that are independent of each other. Each fluid channel 12 is in communication with one of the plurality of cavities at one end and in communication with one of a plurality of fluid lines to be detected at the other end. For example, one end of the first fluid channel 12a is in communication with a corresponding cavity, and the other end of the first fluid channel 12a can be in communication with a fluid line to be detected, so that the first fluid channel 12a can communicate the fluid line to be detected with the corresponding cavity, so that the fluid pressure in the cavity is the same as the fluid pressure in the fluid line to be detected. The fluid can be a liquid and / or a gas.

[0090] Each cavity is provided with at least one pressure detection element 13, which senses the pressure of the corresponding fluid line to be detected and generates a corresponding pressure electrical signal. The electrical conversion module 14 is electrically connected to the plurality of pressure detection elements 13, respectively, and receives a plurality of pressure electrical signals generated by the plurality of pressure detection elements 13 and outputs a plurality of detection signals, which are signals processed from the pressure electrical signals generated by the pressure detection elements 13.

[0091] For example, the integrated detection device 10 is electrically connected to a control module 20, which receives the detection signals output by the electrical conversion module 14 and obtains the corresponding fluid pressure according to the detection signals.

[0092] The technical scheme of the embodiment of the present disclosure integrates a plurality of modules for sensing the pressure of the fluid to be detected in one main body 11, which can detect the fluid pressure of a plurality of fluid lines to be detected, 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 detect the pressure of the return air pipe and the exhaust air pipe of the compressor, which improves the assembly efficiency of the air conditioning system and reduces the cost of the air conditioning system.

[0093] In one embodiment, as shown in Figure 3, the plurality of cavities are arranged in parallel, the pressure detection elements 13 are installed in the cavities away from one end of the fluid channels 12, and the pressure detection elements 13 are in sealed connection with the cavities, so that the pressure detection elements 13 close the cavities, so that the fluid in the cavities can act on the pressure detection elements 13, and the pressure detection elements can sense the pressure of the fluid. The electrical conversion module 14 is located away from the cavities on the side of the pressure detection elements 13, and a predetermined gap is provided between the electrical conversion module 14 and the pressure detection elements 13. A sealing ring can be provided between the pressure detection elements 13 and the cavities to achieve sealed connection, or sealing glue can be provided between the pressure detection elements 13 and the cavities to achieve sealed connection.

[0094] The integrated detection device further comprises a cover (not shown in the figure) covering the main body 11, and the adapter electrical module 14 is located between the pressure detection element 13 and the cover. The adapter electrical module 14 and the pressure detection element 13 are provided with a preset gap, and the adapter electrical module 14 and the cover are provided with a preset gap. The cover can be in a cylindrical shape, and an accommodation space can be formed in the cover. The adapter electrical module 14 can be located in the accommodation space of the cover. The shape of the cover is not limited to a cylindrical shape, and can also be other shapes.

[0095] Exemplarily, the pressure detection element 13 and the adapter electrical module 14 can be filled with insulating material. The filled insulating material not only separates the pressure detection element 13 and the adapter electrical module 14 to maintain a preset gap therebetween, but also plays an insulating protection role. The insulating material can be insulating glue or the like.

[0096] Exemplarily, the material of the structural member in the integrated detection device can include aluminum or steel. In the related art, the main body of the pressure sensor is made of copper, and the cost of the copper material is relatively high. In the present disclosure, the structural member of the integrated detection device is made of aluminum or steel, which greatly reduces the material cost.

[0097] The integrated detection device with such a structure can reduce the cross-sectional size of the main body by arranging multiple cavities in parallel. The pressure detection element 13 is used to close the other end of the cavity, and no additional plugging component needs to be made, which can simplify the assembly process and improve the assembly efficiency. The adapter electrical module 14 is arranged on the side of the pressure detection element 13 away from the cavity, which can ensure that the cross-sectional size of the integrated detection device is limited by the main body, further ensuring that the integrated detection device has a relatively small overall volume and saves installation space. By arranging the cover and covering the adapter electrical module 14 with the cover, the adapter electrical module 14 is well protected.

[0098] In one embodiment, as shown in FIG. 3, the multiple cavities can include a first cavity and a second cavity, for example, the main body is provided with two cavities independent of each other, which are respectively the first cavity and the second cavity. The shape of the cavity can be cylindrical. Correspondingly, the multiple fluid channels 12 can include a first fluid channel 12a and a second fluid channel 12b; and the multiple pressure detection elements 13 can include a first pressure detection element 13a and a second pressure detection element 13b.

[0099] As shown in FIG. 3, the first fluid channel 12a communicates the first cavity with one fluid pipeline to be detected, and the second fluid channel 12b communicates the second cavity with another fluid pipeline to be detected; the first pressure detection element 13a is accommodated in the first cavity, detects the pressure of the one fluid pipeline to be detected, and generates a first pressure electrical signal; and the second pressure detection element 13b is accommodated in the second cavity, detects the pressure of the other fluid pipeline to be detected, and generates a second pressure electrical signal.

[0100] The shape of each fluid passage shown in FIG. 3 is linear, but in other embodiments, the shape of each fluid passage is not limited to linear, and can be arcuate or curvilinear. The specific shape of the fluid passage can be set as needed, as long as the fluid pipeline to be tested can be connected to the corresponding cavity.

[0101] The first pressure detection element 13a and the second pressure detection element 13b can respectively contact the fluid to be tested in the first cavity and the second cavity, and respectively generate corresponding first pressure electrical signals and second pressure electrical signals. For example, the first pressure detection element 13a contacts the fluid to be tested in the first cavity, senses the pressure of the fluid to be tested, and generates a first pressure electrical signal; the second pressure detection element 13b contacts the fluid to be tested in the second cavity, senses the pressure of the fluid to be tested, and generates a second pressure electrical signal.

[0102] Exemplarily, the detection range of the first pressure detection element 13a is 0-2 MPa; the detection range of the second pressure detection element 13b is 3.5-4.5 MPa. Such a setting, the detection range of the first pressure detection element 13a is adapted to the gas pressure range in the return air pipe in 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 detection element 13b is adapted to the gas pressure range in the exhaust pipe in the air conditioning system, and can be used to detect the fluid pressure in the exhaust pipe, so that the integrated detection device can detect the pressure of the return air pipe and the exhaust pipe of the compressor, improve the assembly efficiency of the air conditioning system, and reduce the cost of the air conditioning system.

[0103] It should be noted that the detection ranges of the first pressure detection element 13a and the second pressure detection element 13b can be set as needed for application in other occasions.

[0104] The pressure detection element 13 can include a micro-electro-mechanical system (MEMS) and a material capable of sensing pressure. The type of pressure detection element 13 can be resistive, capacitive, optical fiber, resonant, or piezoelectric, etc., and the pressure detection element 13 is used to convert the pressure in the pipeline into a weak electrical signal. The material capable of sensing pressure can be a semiconductor material, a ceramic material, or a metal material, etc.

[0105] The switching electric module 14 is electrically connected with the first pressure detection element 13a and the second pressure detection element 13b respectively, for processing the first pressure electric signal and the second pressure electric signal, and outputting the first detection signal and the second detection signal. The switching electric module 14 can perform signal amplification, filtering and other processing on the first pressure electric signal and the second pressure electric signal, so as to improve the strength of the output detection signal and improve the detection accuracy. Exemplarily, the first pressure detection element 13a is electrically connected with the switching electric module 14 and transmits the first pressure electric signal to the switching electric module 14; the second pressure detection element 13b is electrically connected with the switching electric module 14 and transmits the second pressure electric signal to the switching electric module 14. The switching electric module 14 processes the received first pressure electric signal and second pressure electric signal, and outputs the first detection signal and the second detection signal. The first detection signal is the signal after processing the first pressure electric signal. The second detection signal is the signal after processing the second pressure electric signal.

[0106] The integrated detection device is provided with two cavities, two fluid channels and two pressure detection elements, so that the integrated detection device can detect two different fluid pipelines to be detected. FIG. 4 also shows a structural schematic diagram of the integrated detection device which can detect two different fluid pipelines to be detected.

[0107] It should be noted that, in the specific embodiments herein, the integrated detection device is taken as an example to be described in detail, which integrates two cavities, two fluid channels, two pressure detection elements and the like, and can detect two fluid pipelines to be detected. It can be understood that the integrated detection device of the present disclosure is not limited to detecting two fluid pipelines to be detected, and a person skilled in the art can set the integrated detection device to integrate more cavities, fluid channels and pressure detection elements according to the inventive concept of the present disclosure, so as to detect more fluid pipelines to be detected.

[0108] Figure 5 is a schematic diagram of the electrical connection between the integrated detection device and the control module according to an embodiment of the present disclosure. The control system can include the integrated detection device 10 according to an embodiment 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 be controlled according to the detection signal output by the integrated detection device 10. In one embodiment, the integrated detection device 10, as shown in Figure 5, the switching electrical module 14 can include a first input end and a second input end. The first pressure detection element 13a and the second pressure detection element 13b are electrically connected to the first input end and the second input end respectively. For example, the first pressure detection element 13a is connected to the first input end, so that the first pressure electrical signal generated by the first pressure detection element 13a can be transmitted to the switching electrical module 14 through the first input end, so as to facilitate the switching electrical module 14 to process the first pressure electrical signal. The second pressure detection element 13b is connected to the second input end, so that the second pressure electrical signal generated by the second pressure detection element 13b can be transmitted to the switching electrical module 14 through the second input end, so as to facilitate the switching electrical module 14 to process the second pressure electrical signal.

[0109] For example, as shown in Figures 6 and 7, the switching electrical module 14 can include a conditioning chip, and the switching electrical module 14 can further include a first printed circuit board (PCB1), and the conditioning chip can be disposed on the first printed circuit board. When the switching electrical module 14 includes the conditioning chip, the switching electrical module 14 can further include a peripheral circuit disposed on the first printed circuit board. In another embodiment, the switching electrical module 14 can be a conditioning circuit with conditioning function disposed on the first printed circuit board.

[0110] As shown in Figure 8, the switching electrical module 14 can include one input end and one output end, the pressure electrical signals of the plurality of pressure detection elements 13 can be alternately or periodically transmitted to the switching electrical module 14 through the one input end, and the one output end can alternately or periodically output the detection signals corresponding to each pressure detection element 13, which are signals obtained by processing the pressure electrical signals of the pressure detection element 13.

[0111] The switching electrical module 14 can also include a plurality of input ends and a plurality of output ends. As shown in Figure 9, the switching electrical module includes two input ends and two output ends. The first pressure detection element 13a can transmit the first pressure electrical signal to the switching electrical module 14 through one of the input ends, and the second pressure detection element 13b can transmit the second pressure electrical signal to the switching electrical module 14 through the other input end. One of the output ends of the switching electrical module 14 outputs the first detection signal obtained by processing the first pressure electrical signal, and the other output end outputs the second detection signal obtained by processing the second pressure electrical signal.

[0112] The number of connection ports of the input end and the output end of the adapter electric module 14 can be set as needed. In FIG. 5, the first pressure detection element 13a or the second pressure detection element 13b is electrically connected to the adapter electric module 14 by 3 or 4 connection lines, and thus the number of connection ports of the first input end and the second input end is 3 or 4. In a specific embodiment, the number of connection lines between the pressure detection element 13 and the adapter electric module 14 can be determined according to the type (for example, resistance type, capacitance type, etc.) of the pressure detection element 13, and thus the number of connection ports of the first input end and the second input end is determined. For example, when the pressure detection element 13 is of the capacitance type, the number of connection ports of the first input end and the second input end is 3, and the number of connection lines between the pressure detection element 14 and the adapter electric module 14 is 3.

[0113] In an embodiment, the first pressure detection element 13a and the second pressure detection element 13b are symmetrically arranged relative to the adapter electric module 14. When the first pressure detection element 13a and the second pressure detection element 13b use the same adapter electric module 14, symmetrically arranging the first pressure detection element 13a and the second pressure detection element 13b relative to the adapter electric module 14 can further reduce the distance between each pressure detection element 13 and the adapter electric module 14, improve signal transmission performance, and improve the accuracy of the detection signal.

[0114] As shown in FIG. 5, the adapter electric module 14 includes a first output end OUT1 and a second output end OUT2. The first output end OUT1 and the second output end OUT2 are respectively used to output a first detection signal and a second detection signal. For example, the adapter electric module 14 is a conditioning chip, and the conditioning chip has a first output pin and a second output pin, which are the first output end OUT1 and the second output end OUT2. The first detection signal is a signal processed from the first pressure electric signal. The second detection signal is a signal processed from the second pressure electric signal. In this way, the adapter electric module 14 processes the first pressure electric signal and the second pressure electric signal respectively, and outputs the first detection signal and the second detection signal from the first output end OUT1 and the second output end OUT2 respectively, which simplifies the processing logic of the adapter electric module 14 on the signal.

[0115] As shown in FIG. 5, since the first detection signal and the second detection signal are output respectively, 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.

[0116] In order to facilitate the transmission of the signals of the integrated detection device, the integrated detection device can further comprise a first transmission cable. The first transmission cable can comprise 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 can be electrically connected with the first output terminal OUT1 and the second output terminal OUT2 respectively, so that the first detection signal and the second detection signal can 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 can be connected with the positive electrode P+ and the negative electrode P- of the adapter electric module 14 respectively, so that the working power can be provided to the adapter electric module 14 through the first power line and the second power line.

[0117] For example, four terminals can be arranged on the first printed circuit board of the adapter electric module 14, and the four terminals can be electrically connected as the first output terminal OUT1, the second output terminal OUT2, the positive electrode P+ and the negative electrode P- respectively. The four lines in the first transmission cable can be connected with the four terminals respectively, so that the integrated detection device can be connected with the control module 20 through the first transmission cable. Correspondingly, only one socket for connecting the first transmission cable needs to be arranged on the control module 20.

[0118] Therefore, the embodiment of the present disclosure can reduce the number of transmission cables, further reduce the cost of the integrated detection device, and improve the assembly efficiency.

[0119] FIG. 8 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 the embodiment of FIG. 8, the first pressure detection element 13a and the second pressure detection element 13b in the integrated detection device 10 are electrically connected with the first input terminal and the second input terminal of the adapter electric module 14 respectively. The adapter electric module 14 comprises a third output terminal OUT3, and the third output terminal OUT3 is used to alternately output the first detection signal and the second detection signal. The first detection signal is a signal processed from the first pressure electric signal, and the second detection signal is a signal processed from the second pressure electric signal.

[0120] In the embodiment, one third output terminal OUT3 is used to output the first detection signal and the second detection signal. In order to facilitate the output of the detection signal, the third output terminal OUT3 alternately outputs the first detection signal and the second detection signal. The "alternately" can be understood as "intermittently" or "periodically" or "at different preset times". For example, the third output terminal OUT3 alternately outputs the first detection signal and the second detection signal; or the third output terminal OUT3 periodically outputs the first detection signal and the second detection signal; or the third output terminal OUT3 outputs the first detection signal at a first preset time and outputs the second detection signal at a second preset time.

[0121] In order to distinguish whether the signal output by the third output terminal OUT3 is the first detection signal or the second detection signal, odd frame data output by the third output terminal OUT3 can be set as the first detection signal, and even frame data output by the third output terminal OUT3 can be set as the second detection signal. Alternatively, different mark values can be set for the data output by the third output terminal OUT3. When the mark value is a first mark value, the signal output by the third output terminal OUT3 is the first detection signal; and when the mark value is a second mark value, the signal output by the third output terminal OUT3 is the second detection signal. In this embodiment, the signal output by the third output terminal OUT3 is a digital signal.

[0122] As shown in FIG. 8, the integrated detection device can further include a first transmission cable Cable1, which includes a signal line, a first power line and a second power line. The signal line is electrically connected with the third output terminal OUT3, and the first power line and the second power line are electrically connected with the positive power supply P+ and the negative power supply P- of the adapter electric module 14, respectively. Thus, the first detection signal and the second detection signal can be transmitted to the control module 20 through the signal line, and working power supply can be provided to the adapter electric module 14 through the first power line and the second power line. In this way, compared with the embodiment of FIG. 5, the number of core wires of the first transmission cable is reduced, and the product cost is further reduced.

[0123] FIG. 9 is a schematic diagram of electrical connection between the integrated detection device and the control module in another embodiment of the present disclosure. As shown in FIG. 9, the integrated detection device can further include a communication bus cable, which is used to output the first detection signal and the second detection signal, and is also used to provide the power supply obtained from the outside to the adapter electric module 14. For example, the LIN bus technology can be used. The communication bus cable only needs two core wires, and the cost is further reduced. In this way, by using the communication bus technology, only two core wires of the cable are needed, not only the transmission of the power supply can be realized, but also the transmission of the detection signal can be realized, and the cost is further reduced. For example, the LIN bus technology can be used, and in other embodiments, other types of bus technologies can also be used, and are not limited to the LIN bus.

[0124] FIG. 10 is a schematic diagram of electrical connection between the integrated detection device and the control module in another embodiment of the present disclosure, and FIG. 11 is a schematic diagram of electrical connection between the integrated detection device and the control module in another embodiment of the present disclosure. In one embodiment, as shown in FIG. 10 and FIG. 11, the integrated detection device 10 can include a plurality of adapter electric modules 14, and the number of the adapter electric modules 14 can be the same as the number of the pressure detection elements 13. The pressure detection elements 13 correspond to the adapter electric modules 14 one by one. Each adapter electric module 14 has an input terminal and an output terminal. The pressure detection element 13 is electrically connected with the input terminal of the corresponding adapter electric module 14, and the output terminal of the adapter electric module 14 outputs the detection signal corresponding to the pressure detection element 13.

[0125] Exemplarily, as shown in FIG. 10 and FIG. 11, the integrated detection device 10 includes two conversion electric modules 14. One of the conversion electric modules 14 includes a first input end and a first output end OUT1, and the first pressure detection element 13a is electrically connected with the first input end, that is, the first pressure electric signal generated by the first pressure detection element 13a is transmitted to the conversion electric module 14 through the first input end. The first output end OUT1 is used for outputting a first detection signal, and the first detection signal is a signal processed from the first pressure electric signal.

[0126] The other conversion electric module 14 of the above two conversion electric modules 14 includes a second input end and a second output end OUT2, and the second pressure detection element 13b is electrically connected with the second input end, that is, the second pressure electric signal generated by the second pressure detection element 13b is transmitted to the conversion electric module 14 through the second input end. The second output end OUT2 is used for outputting a second detection signal, and the second detection signal is a signal processed from the second pressure electric signal.

[0127] In this way, the two pressure detection elements 13 correspond to the two conversion electric modules 14, and each conversion electric module 14 only needs to process the pressure electric signal generated by the corresponding pressure detection element 13 and output the detection signal, and there is no mutual interference between the two conversion electric modules 14. Although the number of conversion electric modules 14 is increased, the internal processing flow of the conversion electric module 14 is simplified, which is conducive to improving the detection accuracy.

[0128] Exemplarily, when the number of conversion electric modules 14 is multiple, one transmission cable can be corresponded to each conversion electric module 14, so that the mutual interference between the detection signals output by different conversion electric modules 14 can be avoided.

[0129] For example, as shown in FIG. 10, the integrated detection device further includes a third transmission cable Cable3 and a fourth transmission cable Cable4. The third transmission cable Cable3 and the fourth transmission cable Cable4 each include a signal line, 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 Cable3 are respectively electrically connected with the first output end OUT1, the positive electrode of the power supply and the negative electrode of the power supply of one of the above two conversion electric modules 14. The signal line, the first power line and the second power line in the fourth transmission cable Cable4 are respectively electrically connected with the second output end OUT2, the positive electrode of the power supply and the negative electrode of the power supply of the other of the above two conversion electric modules 14. That is, one conversion electric module 14 is connected with one transmission cable, and the mutual interference between different detection signals can be avoided, and the detection accuracy is further improved.

[0130] In another embodiment, the plurality of adapter electrical modules 14 can employ one transmission cable, so that the number of transmission cables can be reduced to reduce the cost. For example, as shown in FIG. 11, the integrated detection device further comprises a second transmission cable Cable2, which comprises 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 with the first output end OUT1 and the second output end OUT2 respectively. The first power line is electrically connected with the positive poles of the two adapter electrical modules 14, and the second power line is electrically connected with the negative poles of the two adapter electrical modules 14.

[0131] The output ends of the plurality of adapter electrical modules 14 are connected with a plurality of signal lines respectively, the positive poles of the plurality of adapter electrical modules 14 can be connected with the same first power line, for example, the first power line is electrically connected with the positive poles of the two adapter electrical modules 14; the negative poles of the plurality of adapter electrical modules 14 can be connected with the same second power line, for example, the second power line is electrically connected with the negative poles of the two adapter electrical modules 14. In this way, not only can the interference between the detection signals output by different adapter electrical modules 14 be reduced, but also the sharing of power lines reduces the number of core wires in the cable, thereby reducing the cost. For example, the second transmission cable Cable2 in the embodiment of FIG. 11 only needs 4 core wires.

[0132] For the second transmission cable Cable2, a cable with shielding can be selected, which can further reduce the interference of the outside to the detection signals transmitted in the cable, thereby improving the signal transmission performance of the cable.

[0133] In an embodiment, a connector can be arranged on the first printed circuit board on which the adapter electrical modules 14 are arranged, a plurality of pins in the connector are connected with the output ends of the adapter electrical modules 14 and the positive poles and the negative poles of the adapter electrical modules 14 through the core wires in the transmission cable respectively. Thus, the transmission cable connects the control module 20 with the adapter electrical modules 14.

[0134] In another embodiment, as shown in FIG. 2, the integrated detection device can further comprise a connector, which is connected with the first printed circuit board in a plug-in manner, and a plurality of pins are arranged on the connector, which can be connected with the output ends of the adapter electrical modules 14 and the positive poles and the negative poles of the adapter electrical modules 14 respectively. The core wires in the transmission cable can be welded with the plurality of pins of the connector.

[0135] In order to facilitate the extension of the transmission cable, a threading hole can be arranged on the cover of the integrated detection device, which is used for the extension of the transmission cable.

[0136] Fig. 12 is a schematic diagram of the electrical connection between the integrated detection device and the control module according to another embodiment of the present disclosure, and Fig. 13 is a schematic diagram of the electrical connection between the integrated detection device and the control module according to yet another embodiment of the present disclosure. In one embodiment, as shown in Fig. 12, the integrated detection device can further include a temperature sensor, which can be electrically connected to the adapter electrical module 14. The adapter electrical module 14 is further configured to process the temperature electrical signal generated by the temperature sensor. The detection signal output by the adapter electrical module 14 includes the pressure detection signal and the temperature detection signal.

[0137] By way of example, the first detection signal and the second detection signal in the above description can be pressure detection signals reflecting the fluid pressure, and the detection signal output by the adapter electrical module 14 corresponding to the temperature electrical signal can be referred to as a temperature detection signal, which is used to reflect the temperature.

[0138] The specific number of temperature sensors can be set as needed, which can be one or multiple. In Fig. 12, temperature sensor 1 and temperature sensor n are schematically shown, and in Fig. 13, temperature sensor 1 and temperature sensor 2 are schematically shown.

[0139] The adapter electrical module 14 can output the pressure detection signal and the temperature detection signal through one output terminal. Both the pressure detection signal and the temperature detection signal are digital signals, and the output terminal of the adapter electrical module 14 can sequentially output multiple pressure detection signals and multiple temperature detection signals. For example, each pressure detection signal and each temperature detection signal is configured with a corresponding marker value, according to which it can be determined whether the detection signal is a pressure detection signal or a temperature detection signal, and which pressure detection element or temperature sensor the detection signal corresponds to. In this way, the integrated detection device only needs to use a three-core transmission cable, thereby reducing the cost.

[0140] In another embodiment, as shown in Fig. 13, the integrated detection device can further include a temperature sensor, the negative electrode of the power supply of the temperature sensor is electrically connected to the negative electrode of the power supply of the adapter electrical module 14, and the integrated detection device further includes a temperature signal line, which is electrically connected to the signal terminal of the temperature sensor.

[0141] By electrically connecting the negative electrode of the power supply of the temperature sensor to the negative electrode of the power supply of the adapter electrical module 14, one power supply line can be saved, thereby reducing the cost.

[0142] The temperature sensor can use a commonly used temperature sensing element, which is not specifically limited herein. The temperature sensor can use a commonly used temperature detection device, which is not specifically limited herein.

[0143] In other embodiments, the integrated detection device can further integrate other types of sensors, which can be set as needed.

[0144] The integrated detection device of the embodiments of the present disclosure integrates a plurality of sensing modules for detecting fluid pressure of a plurality of fluid pipelines, thereby 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 detect the pressure of the suction pipe and the discharge pipe of the compressor, thereby improving the assembly efficiency of the air conditioning system and reducing the cost of the air conditioning system.

[0145] Referring to FIGS. 5-14, the integrated detection device 10 can be connected with a control module 20, which can include a second printed circuit board and a master control unit (MCU) disposed on the second printed circuit board. The integrated detection device is connected with the master control unit. The control module 20 can determine the corresponding fluid pressure according to the detection signals 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 the related components such as the compressor or the valve.

[0146] In some embodiments of the present disclosure, as shown in FIG. 2, the main body includes an outer structure. As shown in FIG. 4, the outer structure includes a metal shell and an insulating shell wrapped around the outer periphery of the metal shell; the metal shell includes two independently arranged cavities, the bottom wall of the metal shell is provided with a plurality of openings, a plurality of fluid channels are inserted and communicated in the openings, and one side of each cavity is communicated with the openings, and the other side of the cavity is communicated with the pressure detection element.

[0147] In some embodiments of the present disclosure, as shown in FIG. 4, the adapter electrical module includes an FPC adapter plate and a plurality of terminals and a plurality of cables, the FPC adapter plate is in electrical conduction with the plurality of pressure detection elements, the plurality of terminals are in electrical conduction with the FPC adapter plate, and the plurality of cables and the plurality of terminals are in one-to-one electrical conduction. In FIG. 4, the adapter plate (FPC) is the above-mentioned FPC adapter plate.

[0148] In some embodiments of the present disclosure, as shown in FIG. 15, the FPC adapter plate includes a grounding portion in grounding communication with the metal shell; the FPC adapter plate is electrically connected with the control module through the terminals and the cables via the signal isolation module. In FIG. 4, the adapter plate (FPC) is the above-mentioned FPC adapter plate.

[0149] In some embodiments of the present disclosure, as shown in FIG. 4, the outer structure further includes a metal shielding shell, the plurality of independent cavities are arranged in the metal shielding shell, the FPC adapter plate has a grounding portion in grounding communication with the metal shielding shell.

[0150] Alternatively, in some other embodiments, as shown in FIG. 16, the outer structure further comprises a plurality of metal shielding shells, each of which is provided with a pressure detection element, and a cavity is formed between the pressure detection element in each metal shielding shell and the bottom wall of the metal shielding shell; the number of FPC adapter boards is plural, and each FPC adapter board is provided in one of the metal shielding shells in a one-to-one correspondence, and the grounding portion of each FPC adapter board is grounded to the corresponding metal shielding shell.

[0151] In some embodiments of the present disclosure, as shown in FIGS. 17 and 18, the fluid channel is a metal connecting pipe, and the fluid pipeline to be detected is grounded, and the fluid channel is in communication with and grounded to the fluid pipeline to be detected. For example, the fluid channel and the fluid pipeline to be detected can both be copper pipes. In the sensor module shown in FIG. 17, the adapter electric module and the pressure detection element can be included, the pressure chamber is the cavity, and the shielding shell is the metal shielding shell or the metal shell, and the material of the shielding shell can be stainless steel, aluminum, or copper, etc. The conductive connection portion can be the grounding portion described above.

[0152] In FIG. 18, in order to better connect the fluid channel and the fluid pipeline to be detected, a copper sleeve is provided, one end of the copper sleeve is sleeved on the fluid channel, and the other end is inserted into the fluid pipeline to be detected. The pipe diameter of the copper sleeve is greater than the pipe diameter of the fluid channel, so that the copper sleeve can be sleeved on the fluid channel, and the connection position of the copper sleeve and the fluid channel will not have liquid leakage, and the connection position of the copper sleeve and the fluid channel can also be sealed by a sealing element such as sealing glue or a sealing ring. FIG. 18 is a schematic diagram taking a copper sleeve as an example, and in actual application, a metal sleeve made of other conductive materials such as an aluminum sleeve, a stainless steel sleeve, etc. can also be used.

[0153] The embodiments of the present disclosure also provide a control system, which can include the integrated detection device of the embodiments of the present disclosure, and can also include a control module 20, and the integrated detection device is electrically connected to the control module 20. The control module 20 is used to control according to the detection signal output by the integrated detection device. Referring to FIG. 5, 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 the related components such as the compressor or the 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 the related components such as the compressor or the valve.

[0154] Referring to FIGS. 12 and 13, the control module 20 can also determine the temperature detected by the temperature sensor 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 sensor according to the signal received from the temperature signal line, so as to control the temperature.

[0155] FIG. 14, FIG. 15 and FIG. 19 are connection diagrams of the control system in another embodiment of the present disclosure. In an embodiment, the control system can further include a signal isolation module 30, the signal isolation module 30 including an isolation input and an isolation output, the integrated detection device 10 being electrically connected to the isolation input, and the isolation output being electrically connected to the control module 20.

[0156] In the related art, referring to FIG. 2, the EMC protection is achieved by using a shielding protective metal part, which leads to a complex sensor structure and high cost.

[0157] In the embodiment of the present disclosure, the signal isolation module 30 is arranged in the control system, the integrated detection device 10 is electrically connected to the isolation input of the signal isolation module 30, and the control module 20 is electrically connected to the isolation output 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 by the signal isolation module 30, the EMC protection of the integrated detection device is achieved, and the cost of using the signal isolation module is much lower than that of using the shielding protective metal part in the related art. Therefore, the control system in the embodiment of the present disclosure not only achieves the EMC isolation, but also reduces the cost.

[0158] Exemplarily, the control module 20 can include a second printed circuit board and a master control unit (MCU) arranged on the second printed circuit board, and the master control unit can include a master control chip. The signal isolation module can include a signal isolation circuit or an isolation device. The signal isolation module can be arranged on the second printed circuit board, so that a printed circuit board for arranging the signal isolation module does not need to be separately manufactured, the number of parts of the control system is reduced, and the assembly efficiency is improved.

[0159] FIG. 20 is a connection 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 an optical coupling device, the detection signal output by the integrated detection device is coupled to the input of the optical coupling device, and the control module 20 is coupled to the output of the optical coupling device. The control module 20 is configured to control according to the signal obtained from the output of the optical coupling device, for example, the control module 20 controls relevant components according to the signal obtained from the output of the optical coupling device.

[0160] For example, the detection signal output by the integrated detection device can be coupled to the input of the optocoupler through the first signal processing circuit. The first signal processing circuit can filter and amplify the detection signal output by the integrated detection device, and process the detection signal into a control signal matched with the input of the optocoupler. When the control signal controls the optocoupler to work, an output signal can be obtained from the output of the optocoupler. The output of the optocoupler can be coupled to the control module 20 through the second signal processing circuit, and the second signal processing circuit processes the signal output by the output of the optocoupler into a signal that can be received and recognized by the control module 20. The control module 20 controls relevant components such as compressors or valves according to the signal obtained from the second signal processing circuit.

[0161] The specific form and structure of the first signal processing circuit and the second signal processing circuit can be set as needed, and are not specifically limited here.

[0162] It should be noted that the integrated detection device shown in FIG. 20 has one output end for outputting a detection signal, and the integrated detection device can adopt any one of FIGS. 5-14. When the integrated detection device has multiple output ends, each output end can be connected to the control module 20 through an optocoupler to achieve signal isolation.

[0163] FIG. 21 is a connection diagram of a control system in another embodiment of the present disclosure. For example, 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 and an output. As shown in FIG. 21, the power supply positive VCC1 and the power supply negative GND1 of the input of the digital isolator are coupled to the power supply positive VCC and the power supply negative GND of the integrated detection device, respectively, and the signal end of the input of the digital isolator is coupled to the detection signal of the integrated detection device. The power supply positive VCC2 and the power supply negative GND2 of the output of the digital isolator and the signal end are coupled to the control module 20, and the control module 20 is configured to control according to the signal obtained from the signal end of the output. The power supply positive VCC2 and the power supply negative GND2 of the output of the digital isolator can be connected to the power supply positive VCC and the power supply negative GND of the control module 20, respectively.

[0164] Exemplarily, as shown in FIG. 21, a resistance R1 can be arranged between the detection signal of the integrated detection device and the signal end of the input part of the digital isolator, a first capacitor C1 can be arranged between the signal end of the input part of the digital isolator and the power negative pole GND1, and the value of the resistance R1 and the value of the first capacitor C1 can be set as needed. A resistance R2 can be arranged between the signal end of the output part of the digital isolator and the control module 20, a second capacitor C2 can be arranged between the signal end and the power negative pole GND2, and the value of the resistance R2 and the value of the second capacitor C2 can be set as needed.

[0165] FIG. 22 is a connection diagram of a 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 part and an output part. Referring to FIG. 22, the power positive pole VCC1 and the power negative pole GND1 of the input part of the isolation operational amplifier are respectively coupled to the power positive pole VCC and the power negative pole GND of the integrated detection device, and two signal ends of the input part are respectively coupled to the detection signal and the power negative pole GND of the integrated detection device. The power positive pole, the power negative pole and two signal ends of the output part of the isolation operational amplifier are coupled to the control module 20, and the control module 20 is configured to control according to the signals obtained from the two signal ends of the output part.

[0166] For example, the two signal ends of the input part of the isolation operational amplifier are coupled to the detection signal and the power negative pole GND of the integrated detection device through a third signal processing circuit, so that the detection signal output by the integrated detection device is transmitted to the two signal ends of the input part of the isolation operational amplifier after being processed by the third signal processing circuit. The signals output by the two signal ends of the output part of the isolation operational amplifier are transmitted to the control module 20 after being processed by a fourth signal processing circuit, and the control module 20 controls the components such as the compressor or the valve according to the signals obtained from the two signal ends of the output part of the isolation operational amplifier. The third signal processing circuit can process the detection signal output by the integrated detection device into a signal suitable for the isolation operational amplifier. The fourth signal processing circuit can process the signal output by the output part of the isolation operational amplifier into a signal that can be received and recognized by the control module 20.

[0167] The specific forms and structures of the third signal processing circuit and the fourth signal processing circuit can be set as needed, which are not limited here.

[0168] Referring to FIGS. 5-14, the power supply required by the switching power module 14 in the integrated detection device can be directly provided by an external power supply or provided by the control module 20.

[0169] FIG. 23 is a schematic diagram of a power supply circuit of the control module and the integrated detection device according to an embodiment of the present disclosure. In an example, the control module 20 and the integrated detection device can use the same power supply. For example, the control module 20 can include a power jack for receiving a power supply, and the positive and negative power terminals of the integrated detection device can be coupled to the positive and negative power terminals of the power jack, respectively, so that the integrated detection device uses the same power supply as the control module 20. The control system can further include a power module, which can be a switching power supply. As shown in FIG. 23, the switching power supply can convert AC power to DC power. The switching power supply includes an AC input terminal and a DC output terminal. The AC power is connected to the AC input terminal of the switching power supply to provide AC power to the switching power supply. The switching power supply internally converts the AC power to DC power and provides the DC power to the control module 20 and the integrated detection device. Inside the switching power supply, the AC power is connected to the primary winding S1 through a filter circuit and a rectifier circuit, and there is no electrical connection between the primary winding S1 and the output winding S2.

[0170] FIG. 24 is a schematic diagram of a power supply circuit of the control module and the integrated detection device according to another embodiment of the present disclosure. In an example, the control module 20 includes a power jack for receiving a power supply, so that the power module can supply power to the power jack for use by the control module 20. The power module can include a switching power supply. As shown in FIG. 24, the switching power supply includes an AC input terminal and a DC output terminal. The AC power is connected to the AC input terminal of the switching power supply to provide AC power to the switching power supply. The switching power supply internally converts the AC power to DC power and provides the DC power to the control module 20. Typically, to ensure that the switching power supply can pass EMC tests, a third capacitor C3 can 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 can be provided between the primary winding S1 and the output winding S2. If the DC power output by the output winding S2 of the switching power supply is directly provided to the integrated detection device, the voltage resistance performance of the integrated detection device can be degraded and cannot meet the safety test requirements.

[0171] In order to meet the regulatory test, the control system can further include a DC isolation power supply, as shown in FIG. 24, two input power supply pins of the DC isolation power supply are coupled with two power supply pins of the power socket of the control module 20 respectively, and two output power supply pins of the DC isolation power supply are coupled with the positive power supply and the negative power supply of the integrated detection device. Exemplarily, the DC isolation power supply includes an input winding S3 and an output winding S4, two ends of the input winding S3 are coupled with two power supply pins of the power socket of the control module 20 respectively, and the output winding S4 is used to supply power to the integrated detection device, and two ends of the output winding S4 can be coupled with the positive power supply and the negative power supply of the relay module 14 in the integrated detection device to supply power to the relay module 14. Such a power supply mode is equivalent to providing a shielding protective metal piece in the integrated detection device, which improves the withstand voltage performance of the integrated detection device, improves the EMC performance of the integrated detection device, and has lower cost than the related art.

[0172] FIG. 25 is a schematic diagram of a power supply circuit of the control module and the integrated detection device in another embodiment of the present disclosure. In one embodiment, as shown in FIG. 25, the control system includes a power module, and the power module includes a switching power supply. The switching power supply includes a primary winding S1, a first output winding S2 and a second output winding S3. The primary winding S1 is coupled with the alternating current, and the first output winding S2 of the power module can output a first direct current, and the first 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 arranged between the primary winding S1 and the first output winding S2 inside the switching power supply, or a resistor R3 and a fourth capacitor C4 can be arranged between the primary winding S1 and the first output winding S2. The second output winding S3 of the power module is coupled with the positive power supply and the negative power supply of the integrated detection device, and the second output winding S3 provides a second direct current to the integrated detection device.

[0173] Referring to FIGS. 23-25, inside the switching power supply, the alternating current is connected to the primary winding S1 through the filtering circuit and the rectifier circuit, and the parts of the circuit inside the switching power supply can adopt the conventional technology in the art, which is not limited here.

[0174] The control system can further include a compressor, the first fluid channel in the integrated detection device can be in communication with the return air pipe of the compressor, and the second fluid channel can be in communication with the exhaust 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 return air pipe and the air pressure of the exhaust pipe of the compressor according to the first detection signal and the second detection signal, and then control the operation of the compressor according to the air pressure.

[0175] The air conditioning system according to the embodiments of the present disclosure comprises the integrated detection device according to the embodiments of the present disclosure, or the control system according to the embodiments of the present disclosure.

[0176] In some embodiments of the present disclosure, as shown in FIG. 26, the air conditioning system comprises a heat source unit, a load unit, and a gas connection pipe and a liquid connection pipe connecting the heat source unit and the load unit, the heat source unit, the load unit, the gas connection pipe and the liquid connection pipe forming a refrigerant circulation loop; the integrated detection device or the control system is arranged in the heat source unit.

[0177] In some embodiments of the present disclosure, as shown in FIG. 26, the heat source unit comprises a compressor, a four-way valve, a heat source heat exchanger, and the load unit comprises a load heat exchanger; the four-way valve comprises a first interface, a second interface, a third interface and a fourth interface, the first interface is communicated with the compressor exhaust port via an exhaust pipe, the second interface is communicated with the heat source heat exchanger via a pipe, the third interface is communicated with the compressor gas inlet port via a gas return pipe, and the fourth interface is communicated with the gas connection pipe via a pipe; one of the plurality of fluid passages is communicated with the exhaust pipe or the pipe forming the first interface, and the other of the plurality of fluid passages is communicated with the gas return pipe or the pipe forming the second interface.

[0178] As shown in FIG. 27, the four-way valve is connected to the integrated detection device, and the integrated detection device is communicated with the pipe forming the first interface of the four-way valve and the pipe forming the third interface of the four-way valve through the fluid passages respectively. In actual application, the first interface is communicated with the exhaust pipe, and the third interface is communicated with the gas return pipe, so the integrated detection device can also be communicated with the exhaust pipe and the gas return pipe through the fluid passages respectively.

[0179] The air conditioning system adopts the integrated detection device according to the embodiments of the present disclosure, one integrated detection device can detect the gas pressures of the compressor gas return pipe and the exhaust pipe at the same time, the number of pressure sensors is reduced, the assembly steps of the whole system are reduced, the assembly efficiency is improved, and the cost is reduced.

[0180] In the description of the present disclosure, 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" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present disclosure.

[0181] In addition, the terms "first", "second", etc. are used only to describe different instances, and cannot be construed to indicate or imply relative importance or imply the number of indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present disclosure, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0182] In the present disclosure, unless explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0183] In the present disclosure, unless explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0184] The above disclosure provides many different implementations or examples to realize different structures of the present disclosure. In order to simplify the present disclosure, the components and settings of specific examples are described above. Of course, they are only examples, and the purpose is not to limit the present disclosure. In addition, the present disclosure can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0185] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and any skilled person in the art can easily think of various changes or replacements within the technical scope disclosed by the present disclosure, and different parts in different embodiments can be combined with each other without conflict. These should 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, The utility model relates to a pressure detection device for multiple fluid pipes, comprising: a main body provided with multiple cavities independent of each other; multiple fluid channels, one end of each of the fluid channels being connected to one of the multiple cavities, and the other end of each of the fluid channels being connected to one of multiple fluid pipes to be detected; multiple pressure detection elements, at least one pressure detection element being arranged in each of the cavities, the pressure detection elements sensing the pressure of the corresponding fluid pipe to be detected and generating corresponding pressure electrical signals; an adapter electrical module electrically connected to the multiple pressure detection elements, the adapter electrical module receiving the multiple pressure electrical signals generated by the multiple pressure detection elements and outputting multiple detection signals, the detection signals being signals processed from the pressure electrical signals generated by the pressure detection elements.

2. The integrated detection device of claim 1, wherein, The multiple cavities include a first cavity and a second cavity, the multiple fluid channels include a first fluid channel and a second fluid channel, and the multiple pressure detection elements include a first pressure detection element and a second pressure detection element. The first fluid channel is connected to the first cavity and one of the fluid pipes to be detected, and the second fluid channel is connected to the second cavity and another of the fluid pipes to be detected. The first pressure detection element is arranged in the first cavity, detects the pressure of the one fluid pipe to be detected, and generates a first pressure electrical signal. The second pressure detection element is arranged in the second cavity, detects the pressure of the another fluid pipe to be detected, and generates a second pressure electrical signal. The adapter electrical module is electrically connected to the first pressure detection element and the second pressure detection element, and is configured 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 of claim 2, wherein, The adapter electrical module includes a first input end and a second input end, and the first pressure detection element and the second pressure detection element are electrically connected to the first input end and the second input end, respectively.

4. The integrated detection device of claim 3, wherein, The adapter electrical module includes a first output end and a second output end, and the first output end and the second output end are configured to output the first detection signal and the second detection signal, respectively.

5. The integrated detection device of claim 4, wherein, The utility model further includes a first transmission cable, 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 end and the second output end, respectively, and the first power line and the second power line are electrically connected to the positive electrode and the negative electrode of the power supply of the adapter electrical module.

6. The integrated detection device of claim 3, wherein, The adapter electrical module includes a third output end, and the third output end is configured to alternately output the first detection signal and the second detection signal.

7. The integrated detection device of claim 6, wherein, The utility model further includes a first transmission cable, 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 end, and the first power line and the second power line are electrically connected to the positive electrode and the negative electrode of the power supply of the adapter electrical module.

8. The integrated detection device of claim 3, wherein, The utility model further includes a communication bus cable, the communication bus cable is configured to output the first detection signal and the second detection signal, and further configured to provide the adapter electrical module with power obtained from the outside.

9. The integrated detection device of claim 2, wherein, The two adapter electric modules include a first input end and a first output end, the first pressure detection element is electrically connected with the first input end, and the first output end is used for outputting the first detection signal which is a signal processed from the first pressure electric signal. Another adapter electric module includes a second input end and a second output end, the second pressure detection element is electrically connected with the second input end, and the second output end is used for outputting the second detection signal which is a signal processed from the second pressure electric signal.

10. The integrated detection device of claim 9, wherein, 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 with the first output end and the second output end respectively, the first power line is electrically connected with the positive electrode of the power supply of the two adapter electric modules, and the second power line is electrically connected with the negative electrode of the power supply of the two adapter electric modules.

11. The integrated detection device of claim 2, wherein, The detection range of the first pressure detection element is 0-2 MPa, and the detection range of the second pressure detection element is 3.5-4.5 MPa.

12. The integrated detection device of claim 1, wherein, The plurality of cavities are arranged in parallel, the pressure detection element is installed at one end of the cavity away from the fluid channel, and the pressure detection element is in sealed connection with the cavity. The adapter electric module is located on the side of the pressure detection element away from the cavity. The integrated detection device further includes a cover body, the cover body is arranged on the main body, and the adapter electric module is located between the pressure detection element and the cover body.

13. The integrated detection device of claim 1, wherein, Further comprising a temperature sensor, the temperature sensor is electrically connected with the adapter electric module, the adapter electric module is further used for processing a temperature electric signal generated by the temperature sensor, and the detection signal output by the adapter electric module includes a pressure detection signal and a temperature detection signal.

14. The integrated detection device of claim 1, wherein, Further comprising a temperature sensor, the negative electrode of the power supply of the temperature sensor is electrically connected with the negative electrode of the power supply of the adapter electric module, and the integrated detection device further includes a temperature signal line, the temperature signal line is electrically connected with the signal end of the temperature sensor.

15. The integrated detection device of claim 1, wherein, The main body includes an outer structure, the outer structure includes a metal shell and an insulating shell wrapped around the metal shell; The metal shell includes two independently arranged cavities, a plurality of openings are arranged in the bottom wall of the metal shell, a plurality of fluid channels are inserted into and communicated with the openings, and one side of each cavity is communicated with the openings, and the other side of the cavity is communicated with the pressure detection element.

16. The integrated detection device of claim 15, wherein, The adapter electric module includes an FPC adapter plate, a plurality of terminals and a plurality of cables, the FPC adapter plate is in electrical conduction with the plurality of pressure detection elements, the plurality of terminals are in electrical conduction with the FPC adapter plate, and the plurality of cables and the plurality of terminals are in one-to-one electrical conduction.

17. The integrated detection device of claim 16, wherein, The FPC adapter plate comprises a grounding part in ground communication with the metal shell; and the FPC adapter plate is electrically connected with the control module via a signal isolation module through the terminal and the cable.

18. The integrated detection device of claim 16, wherein, The outer structure further comprises one metal shielding shell, and a plurality of independent cavities are arranged in the metal shielding shell; the FPC adapter plate has a grounding part in ground communication with the metal shielding shell. Alternatively, the outer structure further comprises a plurality of metal shielding shells, each of which is provided with a pressure detection element; the pressure detection element in each metal shielding shell and the bottom wall of the metal shielding shell form the cavity; the number of FPC adapter plates is plural, and each FPC adapter plate is arranged in one of the metal shielding shells in one-to-one correspondence; and the grounding part of each FPC adapter plate is in ground connection with the corresponding metal shielding shell.

19. The integrated detection device of claim 1, wherein, The fluid channel is a metal connecting pipe, and the to-be-tested fluid pipeline is grounded; the fluid channel is in communication with and grounded to the to-be-tested fluid pipeline.

20. A control system characterized by, The integrated detection device comprises a control module electrically connected with the integrated detection device, and the control module is used for controlling according to the detection signal output by the integrated detection device.

21. The control system of claim 20, wherein, The integrated detection device further comprises a signal isolation module, and the signal isolation module comprises an isolation input part and an isolation output part; the integrated detection device is electrically connected with the isolation input part, and the isolation output part is electrically connected with the control module.

22. The control system of claim 21, wherein, The detection signal output by the integrated detection device is a digital signal, and the signal isolation module satisfies: The signal isolation module comprises an optical coupling device, the detection signal output by the integrated detection device is coupled with the input part of the optical coupling device, and the control module is coupled with the output part of the optical coupling device; or The signal isolation module comprises a digital isolator, the input part of the digital isolator is coupled with the power positive pole and the power negative pole of the integrated detection device, and the signal end of the input part of the digital isolator is coupled with the detection signal of the integrated detection device; the power positive pole and the power negative pole and the signal end of the output part of the digital isolator are coupled with the control module; and the control module is used for controlling according to the signal obtained from the signal end of the output part of the digital isolator.

23. The control system of claim 21, wherein, The detection signal output by the integrated detection device is an analog signal, the signal isolation module comprises an isolation operational amplifier, the isolation operational amplifier comprises an input part and an output part, the positive power supply electrode and the negative power supply electrode of the input part are coupled with the positive power supply electrode and the negative power supply electrode of the integrated detection device respectively, and the two signal ends of the input part are coupled with the detection signal and the negative power supply electrode of the integrated detection device respectively; the positive power supply electrode, the negative power supply electrode and the two signal ends of the output part are coupled with the control module, and the control module is used for controlling according to the signals obtained from the two signal ends of the output part.

24. The control system according to claim 20, wherein, the control module comprises a power socket for receiving a power supply, and the positive power supply electrode and the negative power supply electrode of the integrated detection device are coupled with the positive power supply electrode and the negative power supply electrode of the power socket respectively; or, the control module comprises a power socket for receiving a power supply, and the control system further comprises a DC isolation power supply, two input power supply pins of the DC isolation power supply are coupled with two power supply pins of the power socket respectively, and two output power supply pins of the DC isolation power supply are coupled with the positive power supply electrode and the negative power supply electrode of the integrated detection device respectively; the control system further comprises a power module, the power module comprises a primary winding, a first output winding and a second output winding, wherein the primary winding of the power module is coupled with an alternating current, the first output winding of the power module is used for supplying power to the control module, and a capacitor is arranged between the first output winding and the primary winding; the second output winding of the power module is coupled with the positive power supply electrode and the negative power supply electrode of the integrated detection device.

25. The control system of claim 20, wherein, Further comprising a compressor, a first fluid channel in the integrated detection device is communicated with a return gas pipe of the compressor, a second fluid channel in the integrated detection device is communicated with an exhaust pipe of the compressor, and the control module is used for controlling the operation of the compressor according to the detection signal output by the integrated detection device.

26. An air conditioning system comprising: The integrated detection device according to any one of claims 1-19; or, the control system according to any one of claims 20-25.

27. The air conditioning system of claim 26, wherein, Further comprising: a heat source unit, a load unit, and a gas connection pipe and a liquid connection pipe which communicate the heat source unit and the load unit, the heat source unit, the load unit, the gas connection pipe and the liquid connection pipe form a refrigerant circulation loop; the integrated detection device or the control system is arranged in the heat source unit.

28. The air conditioning system of claim 27, wherein, The heat source unit comprises a compressor, a four-way valve and a heat source heat exchanger, and the load unit comprises a load heat exchanger; the four-way valve comprises a first interface, a second interface, a third interface and a fourth interface, the first interface is communicated with a compressor exhaust port via an exhaust pipe, the second interface is communicated with the heat source heat exchanger via a pipe, the third interface is communicated with a compressor return gas port via a return gas pipe, and the fourth interface is communicated with the gas connection pipe via a pipe; the four-way valve comprises a first interface, a second interface, a third interface and a fourth interface, the first interface is communicated with a compressor exhaust port via an exhaust pipe, the second interface is communicated with the heat source heat exchanger via a pipe, the third interface is communicated with a compressor return gas port via a return gas pipe, and the fourth interface is communicated with the gas connection pipe via a pipe; One of the plurality of fluid passages is in communication with the exhaust pipe or a connection pipe forming the first interface, and another of the plurality of fluid passages is in communication with the return pipe or a connection pipe forming the second interface.

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