Air conditioner control equipment and train air conditioner control system

Abstract

The embodiment of the utility model provides air conditioner control equipment and a train air conditioner control system. The air conditioner control equipment comprises an equipment shell and a plurality of board cards, the plurality of board cards comprise a core board integrated with a control circuit; a plurality of communication interface circuits and power supply circuits are integrated on the bottom plate; an expansion board for expanding an input function and / or an output function of the control circuit; a backboard integrated with a communication connection line and a power supply connection line; the core plate is inserted into the bottom plate; the bottom plate is inserted into the back plate; the backboard is also provided with a plurality of expansion interfaces; the expansion board is inserted into the back board through the expansion interface, communication connection between the expansion board and the bottom board is established through the communication connection line, and electric connection between the expansion board and the bottom board is established through the power supply connection line. The board card in the air conditioner control equipment adopts a modular design, so that functions on the board card can be expanded conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of train control, in particular to an air-conditioning control device and a train air-conditioning control system. Background Art

[0002] With the continuous development of society, rail transit such as subways and high-speed railways has provided great convenience for people's travel. In order to improve the comfort of passengers, train air conditioning control systems are added to subways and high-speed railways to help maintain the temperature and humidity inside the train.

[0003] A typical train air conditioning control system is mainly composed of an air conditioning unit and a control system. Among them, the air conditioning unit is composed of a structural part, a system part and an air conditioning controller. Specifically, the structural part includes the air conditioning casing and the unit protective cover, etc., the system part includes the evaporator, condenser and variable frequency compressor; the air conditioning controller includes the main controller, the human-computer interaction controller and the emergency ventilation inverter module, etc. The control system can independently control the air conditioning unit through the controller installed in each car, and then adjust the air temperature, humidity, fresh air volume, etc. in the train car. The control system can also realize centralized control of all air conditioning units through the train bus and communication to meet the cooling, heating and ventilation needs of the entire vehicle. However, the traditional train air conditioning control system still has some defects:

[0004] First, it is not convenient to expand the functions on the board of the air-conditioning control equipment arranged in the carriage, and it is difficult to meet and adapt to the ever-changing needs. Second, the train air-conditioning control system cannot achieve a distributed layout. Utility Model Content

[0005] The air conditioning control device and train air conditioning control system provided by the utility model are intended to solve at least one defect of the existing air conditioning control device and train air conditioning control system.

[0006] In the first aspect, the utility model provides an air conditioning control device. The air conditioning control device includes: a device housing and a number of boards and cards contained in the device housing; the several boards and cards include: a core board; a control circuit is integrated on the core board; a bottom board; a number of communication interface circuits and a power supply circuit are integrated on the bottom board; at least one expansion board; the expansion board is used to: expand the input function and / or output function of the control circuit; a back board; a communication connection line and a power supply connection line are integrated on the back board; wherein the core board is plugged into the bottom board; the bottom board is plugged into the back board; the back board is also provided with a number of expansion interfaces; one of the expansion boards is plugged into the back board through one of the expansion interfaces, and a communication connection with the bottom board is established through the communication connection line, and an electrical connection with the bottom board is established through the power supply connection line.

[0007] In some embodiments, the control circuit includes: a main processor core, a real-time processor core, and a built-in memory with a preset capacity.

[0008] In some embodiments, the memory includes: an embedded multimedia card and a low power double data rate memory.

[0009] In some embodiments, the communication interface circuit includes: a first communication interface circuit based on the RS485 serial communication standard; a second communication interface circuit based on the CAN serial communication protocol; and a third communication interface circuit based on the train real-time data protocol.

[0010] In some embodiments, the control logic recorded in the control circuit is editable.

[0011] In some embodiments, the expansion board includes: a first expansion board having N digital signal input channels; a second expansion board having M digital signal output channels; a third expansion board having E analog signal input channels; a fourth expansion board having F analog signal output channels; a fifth expansion board having n digital signal input channels and m digital signal output channels; and a sixth expansion board having e analog signal input channels, f analog signal output channels, and g electromagnetic expansion valve control signal output channels; wherein N, M, n, m, E, F, e, f, and g are all positive integers.

[0012] In some embodiments, the air conditioning control device also includes: at least one display device; wherein the display device is arranged on the surface of the device housing; a touch sensing layer is arranged in the display device; the touch sensing layer is used to: sense the user's operation on the surface of the display device.

[0013] In some embodiments, the communication interface circuit further includes: a display interface circuit; wherein the display device is electrically connected to the display interface circuit.

[0014] In some embodiments, the device shell is rectangular and has a first shell surface and a second shell surface opposite to each other in the thickness direction; wherein the first shell surface is provided with an installation opening adapted to the display device; and the display device is fixed at the installation opening.

[0015] In a second aspect, the utility model provides a train air conditioning control system. The train air conditioning control system comprises: a train control device; at least two of the above-mentioned air conditioning control devices; and an expansion bus; wherein one of the air conditioning control devices is communicatively connected to the train control device; and different air conditioning control devices are communicatively connected via the expansion bus.

[0016] At least one beneficial effect of the air conditioning control device and train air conditioning control system provided by the embodiment of the utility model is that the board in the air conditioning control device adopts a modular design and provides multiple expansion interfaces, so that expansion boards with different functions can be easily plugged into the backplane to expand the functions on the board. Moreover, multiple air conditioning control devices in the train air conditioning control system realize a distributed layout through an expansion bus, thereby greatly improving the scalability, reliability and performance of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] One or more embodiments are exemplarily described by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent the same elements, and the figures in the drawings do not constitute proportional limitations unless otherwise stated.

[0018] Figure 1 A schematic diagram of the structure of an air conditioning control device provided by an embodiment of the utility model;

[0019] Figure 2 An exploded schematic diagram of an air conditioning control device provided by an embodiment of the utility model;

[0020] Figure 3 A functional block diagram of an air conditioning control device provided by an embodiment of the utility model;

[0021] Figure 4 Functional block diagram of a train air conditioning control system provided by an embodiment of the utility model;

[0022] Figure 5 An exploded schematic diagram of a device housing including a backplane provided in an embodiment of the utility model;

[0023] Figure 6 A schematic structural diagram of a device housing including a backplane provided in an embodiment of the utility model.

[0024] Reference numerals:

[0025] 100, air conditioning control device; 200, train air conditioning control system; 101, master air conditioning control device; 102, slave air conditioning control device; 201, train control device; 202, expansion bus; 203, communication bus; 1001, thickness direction; 1002, length direction;

[0026] 1. Equipment shell; 18. First shell surface; 19. Second shell surface; 101. Base; 1011. Bottom plate; 1012. Side plate; 1013. Spacer; 102. Front panel; 1021. First part; 1022. Second part; 13. Back panel; 104. Slide; 105. Bottom plate mounting position; 106. Extension board mounting position; 107. Rectangular hole; 108. Mounting opening; 109. Interface through hole; 2. Board; 21. Core board; 22. Bottom plate; 23. Extension board; 24. Back panel; 2201. Communication bus interface; 2202. Extension bus interface; 3. Display device. DETAILED DESCRIPTION

[0027] The present invention is described in detail below in conjunction with specific embodiments. It should be emphasized that the following description is merely illustrative and is not intended to limit the scope and application of the present invention.

[0028] It should be noted that, unless otherwise clearly specified and limited, the terms "thickness direction", "plug-in" and the like used in this specification to indicate orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The terms such as "installation", "fitting", "connection" and "fixation" should be understood in a broad sense. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; "fixation" can be bolted, snap-fitted or glued; the terms "first", "second", "third", "fourth", "fifth" and "sixth" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated; thus, the features defined as "first", "second", "third", "fourth", "fifth" and "sixth" may explicitly or implicitly include one or more of the features; "multiple" or "several" means two or more; in addition, "and / or" includes any and all combinations of one or more related listed items; for ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0029] In order to make the purpose, technical solutions and advantages of the utility model clearer, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] In this embodiment, the specific shape, structure and size of the "air conditioning control device and train air conditioning control system" are not limited, and those skilled in the art can selectively use any suitable implementation method according to actual needs.

[0031] Figure 1 A schematic diagram of the structure of an air conditioning control device provided in an embodiment of the utility model. Figure 2 This is a schematic diagram of an exploded view of an air conditioning control device provided in an embodiment of the utility model. Figure 3 This is a functional block diagram of an air conditioning control device provided in an embodiment of the utility model.

[0032] See also Figures 1 to 3 The air conditioning control device 100 comprises: a device housing 1 and a plurality of boards 2 housed in the device housing 1. The boards 2 can be fixedly installed in a suitable position inside the device housing 1 according to actual needs.

[0033] In this embodiment, the plurality of boards 2 may include: a core board 21 , a base board 22 , at least one expansion board 23 and a back board 24 .

[0034] The core board 21 is integrated with a control circuit, which is a control core mainly used for performing logic operations and data processing, etc. It can be used to control all communications on the base board 22.

[0035] Preferably, the control logic recorded by the control circuit integrated on the core board 21 can be set to an editable form. Thus, the air conditioning control device 100 can be redeveloped after leaving the factory, and the control logic of the air conditioning control device 100 can be adjusted according to actual needs, thereby improving flexibility.

[0036] The base plate 22 is a platform for providing communication and power supply. A number of communication interface circuits and power supply circuits are integrated on the base plate 22 to realize communication and power supply between boards.

[0037] The expansion board 23 is a board used to expand the input function and / or output function of the control circuit. Specifically, the number of expansion boards 23 and the specific expansion functions can be selected according to actual needs. For example, the expansion boards 23 can be set to six.

[0038] The backplane 24 is a platform that integrates the baseboard and the expansion board. It also integrates communication connection lines and power supply connection lines. The backplane 24 is also provided with a number of expansion interfaces.

[0039] In the actual use and assembly process, the core board 21 is plugged into the bottom board 22, and the bottom board 22 is plugged into the back board 24. Each expansion board 23 is plugged into the back board 24 through an expansion interface.

[0040] Thus, the expansion board 23 can establish a communication connection with the base plate 22 through the communication connection line on the back plate 24, and establish an electrical connection with the base plate 22 through the power supply connection line. The core board 21 can also establish a connection with the expansion board 23 through the base plate 22 and the back plate 24 to achieve data transmission and power supply between the boards.

[0041] The air conditioning control device 100 provided in the embodiment of the utility model adopts a modular design concept, distributing various functional circuits (functional circuits include: control circuits, communication interface circuits and power supply circuits, input functions and / or output functions of control circuits, communication connection lines and power supply connection lines) to boards such as core boards, base boards, expansion boards and back boards, which has the advantages of convenient expansion and miniaturization.

[0042] In some embodiments, the control circuit includes: a main processor core, a real-time processor core, and a built-in memory with a preset capacity.

[0043] Among them, the main processor core is a processor core with relatively high performance. It is responsible for running and processing complex computing tasks and has strong computing and processing capabilities.

[0044] A real-time processor core is another type of processor core that is dedicated to processing tasks that have strict real-time and low latency requirements. Compared with the main processing core, its computing power is relatively weak, but its response speed is fast and it is more suitable for processing time-sensitive tasks.

[0045] For example, the main processing core can be a processor core of model ARM-A35 (Advanced RISC Machines-A35), while the real-time processor core can be a processor core of model ARM-M7 (Advanced RISC Machines-M7). The two are matched with each other, thereby improving the performance of the air conditioning control device 100 while ensuring the real-time performance of the air conditioning control device 100.

[0046] Compared with traditional air-conditioning control devices, the air-conditioning control device 100 provided in the embodiment of the utility model is designed based on the processor core of the ARM architecture and can use the open source Linux operating system, which provides greater convenience for the modification and control of the air-conditioning control device and can better meet specific needs.

[0047] Specifically, the above-mentioned built-in memory includes: an embedded multimedia card and a low-power double data rate memory.

[0048] Among them, the Embedded MultiMedia Card (EMMC) is a memory that integrates flash memory storage and controller functions, and has the characteristics of miniaturization, high integration, low cost, and easy integration and use.

[0049] Moreover, EMMC encapsulates the flash memory chip and controller in a small BGA package (Ball Grid Array), which is conducive to application in smaller devices. EMMC is a memory with an internal integrated controller, which can simplify system design and layout, and make read and write operations faster and more stable.

[0050] Low Power Double Data Rate (LPDDR) is a memory that meets the LPDDR memory technology standard. It has the characteristics of high bandwidth and low power consumption, and adopts the double data rate technology, which can perform data transmission twice in each clock cycle, thereby effectively improving the data transmission speed; in addition, LPDDR also adopts a low power consumption design, which can provide better performance under the same power consumption.

[0051] In some embodiments, the communication interface circuit includes a plurality of communication interface circuits based on different data protocols. In order to distinguish these communication interface circuits, "a first communication interface circuit", "a second communication interface circuit" and "a third communication interface circuit" are used to represent them respectively.

[0052] Among them, the first communication interface circuit can be a communication interface circuit based on the RS485 (Recommended Standard 485) serial communication standard. The second communication interface circuit can be a communication interface circuit based on the CAN (Controller Area Network) serial communication protocol. The third communication interface circuit is a communication interface circuit based on the Train Real-time Data Protocol (TRDP).

[0053] Specifically, the RS485 serial communication standard has the characteristics of high reliability, strong anti-interference ability, and long transmission distance, and is suitable for complex environments and long-distance communication needs.

[0054] The CAN serial communication protocol is a highly reliable and real-time serial communication protocol that can avoid data conflicts when multiple nodes send data simultaneously, and also supports multiple frame types (including data frames, remote frames, and error frames).

[0055] TRDP is a communication protocol for transmitting and processing real-time data (e.g., sensor signals, status information, fault reports, etc.). By using the TRDP protocol, trains can collect, transmit, process and display real-time data, providing accurate and timely information to train operators, maintenance personnel and monitoring centers to support the normal operation, maintenance and management of trains.

[0056] In some embodiments, the expansion board 23 may have a plurality of different actual expansion board types. A plurality of different expansion boards are provided below for illustration. In order to distinguish different expansion boards, they are respectively referred to as "first expansion board", "second expansion board", "third expansion board", "fourth expansion board", "fifth expansion board" and "sixth expansion board" below.

[0057] Specifically, the first expansion board can be an expansion board with N digital signal input channels; the second expansion board is an expansion board with M digital signal output channels; the third expansion board is an expansion board with E analog signal input channels; the fourth expansion board is an expansion board with F analog signal output channels; the fifth expansion board is an expansion board with n digital signal input channels and m digital signal output channels; the sixth expansion board is an expansion board with e analog signal input channels, f analog signal output channels and g electromagnetic expansion valve control signal output channels.

[0058] Wherein, the above N, M, n, m, E, F, e, f, g are all positive integers. The technicians can choose to use one or more of the above first to sixth expansion boards so that the air conditioning control device has the expected number of digital / analog signal output / output channels to meet the data transmission requirements of different types of devices, sensors, etc.

[0059] In some embodiments, please refer to Figures 1 to 3 The air conditioning control device 100 further includes: a display device 3 arranged on the surface of the device housing 1 .

[0060] Among them, in addition to the display area that presents visual information, the display device 3 also has a built-in touch sensing layer, which can be used to sense the user's operation on the surface of the display device 3, thereby achieving the effect of touch operation.

[0061] Therefore, the display device 3 with a touch operation function integrated in the air-conditioning control device 100 can facilitate human-computer interaction, meet customer needs and reduce costs.

[0062] Specifically, in pair with the display device 3, the communication interface circuit integrated on the bottom plate 22 also includes: a display interface circuit. The display interface circuit is electrically connected to the display device 3, so that the display device 3 can present the expected visual information and collect and feedback the user's touch operation instructions.

[0063] In some embodiments, Figure 1 As shown, the device housing 1 has a first housing surface 18 and a second housing surface 19 which are opposite to each other in the thickness direction 1001 .

[0064] The first housing surface 18 of the device housing 1 may be provided with an installation opening adapted to the display device 3. The display device 3 may be fixedly disposed at the installation opening, so as to better display visual information to the user and facilitate the user to perform touch operations.

[0065] Based on the air-conditioning control device provided in the embodiment of the utility model, the utility model further provides a train air-conditioning control system composed of a plurality of air-conditioning control devices in a distributed layout. Figure 4 This is a functional block diagram of a train air conditioning control system provided in an embodiment of the utility model.

[0066] like Figure 4 As shown, the train air conditioning control system 200 includes: a train control device 201 , at least two air conditioning control devices 100 and an expansion bus 202 .

[0067] Among them, the train control device 201 is the core system for realizing train control and monitoring. As the core of train intelligent control, it is used to realize one or more functions related to train operation and passenger service, including but not limited to: controlling and managing key subsystems of the train, real-time monitoring of various working states and key parameters of the train, providing passenger service information (for example, driving time, arrival information), collecting train operation data and realizing two-way communication between the train and the ground control center. In other embodiments, it can also be called "Train Control and Monitoring System" (TCMS).

[0068] An air-conditioning control device having two different roles is provided among the at least two air-conditioning control devices 100 .

[0069] One of the air conditioning control devices 100 can directly establish a communication connection with the above-mentioned train control device 201 and serve as a "host".

[0070] The remaining air-conditioning control devices 100 can act as “slaves” and establish a communication connection with any other air-conditioning control device 100 (including the host) via the expansion bus 202 .

[0071] As a result, the train air conditioning control system 200 forms a distributed layout, thereby achieving the effect of improving the scalability, reliability and performance of the system.

[0072] For details, please continue to refer to Figure 4The air conditioning control device 101 as a host may be provided with a communication bus interface 2201 and an expansion bus interface 2202 on the base plate 22 .

[0073] The communication bus interface 2201 can be connected to the communication bus 203 to realize two-way control communication between the main air-conditioning control device 101 and the train control device 201 .

[0074] The expansion bus interface 2202 is connected to the expansion bus 202 so as to establish bidirectional communication with the remaining air conditioning control devices 102 serving as slaves.

[0075] A plurality of air conditioning control devices 102 as slaves can realize bidirectional communication between any two devices through the expansion bus 202. Alternatively, since the air conditioning control device 102 as a slave does not need to be directly connected to the train control device 201, the communication bus interface 2201 on the bottom plate 22 can be omitted.

[0076] The following combination Figure 5 and Figure 6 , describe the specific structure of the air conditioning control device in detail. Figure 5 A schematic diagram of an exploded view of a device housing including a backplane provided in an embodiment of the utility model. Figure 6 A schematic structural diagram of a device housing including a backplane provided in an embodiment of the utility model.

[0077] like Figure 5 As shown, the device housing 1 may be roughly in the shape of a cuboid, and is formed by a base 101 , a front panel 102 , and a back panel 103 .

[0078] The front panel 102 may be composed of a first portion 1021 and a second portion 1022 which are substantially perpendicular to each other. The first portion 1021 is opposite to the back panel 103, and the second portion 1022 is opposite to the bottom plate 1011, forming the first housing surface 18 mentioned above.

[0079] The base 101 includes a bottom plate 1011, a pair of side plates 1012 extending in the height direction, and a spacer plate 1013. The outer surface of the bottom plate 1011 forms the second shell surface 19, and the pair of side plates 1012 and the spacer plate 1013 extend from the inner surface of the bottom plate 1011 in the height direction.

[0080] The pair of side plates 1012 are located at two opposite sides of the bottom plate 1011 in the length direction, and the spacer plate 1013 is located between the pair of side plates 1012 . The height of the pair of side plates 1012 is also greater than that of the spacer plate 1013 .

[0081] like Figure 5 and Figure 6As shown, a plurality of slide grooves 104 are provided on the side plate 1012 and the partition plate 1013. These slide grooves 104 are arranged at intervals along the height direction, and can cooperate to form a bottom plate installation position 105 for installing the bottom plate 22 and an expansion plate installation position 106 for installing the expansion plate 23.

[0082] Specifically, a pair of slide grooves 104 disposed oppositely and at the same height, respectively located on the side plate 1012 and the partition plate 1013, form an expansion plate installation position 106. A pair of slide grooves 104 disposed oppositely and at the same height, respectively located on the two side plates 1012, can form the above-mentioned bottom plate installation position 105.

[0083] The design of the side panels 1012 and the partition panels 1013 described above can allow two expansion panel installation positions 106 to be arranged side by side in the length direction, which is beneficial for reducing the overall volume of the device and the space occupied by the air conditioning control device.

[0084] Please continue reading Figure 5 and Figure 6 , the back plate 24 is installed and fixed on one side close to the slide slot 104. For example, the back plate 24 can be installed and fixed on the back plate 103 by fasteners such as screws, so that it is fixed at a position close to the end of one side of the slide slot 104.

[0085] Thus, the expansion board 23 that slides into the expansion board installation position 106 through the slide slot 104 can establish an electrical connection with the back plate 24. The bottom plate 22 that slides into the bottom plate installation position 105 through the higher slide slot 104 can also establish an electrical connection with the back plate 24.

[0086] Better yet, please continue reading Figure 5 The first portion 1021 may be provided with a plurality of rectangular holes 107 . Each rectangular hole 107 corresponds to an expansion board installation position 106 .

[0087] The expansion board 23 and the backboard 24 are electrically connected by plugging. For example, the backboard 24 may be provided with a plurality of sockets, and one end of each expansion board 23 may be provided with a plug connector that matches the socket.

[0088] In actual use, the expansion board 23 can easily pass through the rectangular hole 107 and, under the guidance of the slide slot 104 , move to a position in contact with the back panel 24 , so that the plug connector of the expansion board 23 can be stably and reliably plugged into the socket of the back panel 24 .

[0089] Accordingly, the user can apply an outward pulling force to the expansion board 23 that has been plugged into the back plate 24. The outward pulling force causes the plug connector of the expansion board 23 to be disengaged from the plug socket of the back plate 24, and under the guidance of the slide groove 104, the expansion board 23 slides outward through the rectangular hole 107 and is disengaged from the device housing 1. This method effectively improves the convenience of operation when installing and removing the expansion board 23.

[0090] In some embodiments, the bottom plate 22 and the back plate 24 can also be electrically connected by plugging. For example, the back plate 24 is provided with a corresponding bottom plate port, and the bottom plate 22 is provided with a terminal on the side in the length direction thereof. The electrical connection between the bottom plate terminal and the bottom plate port on the back plate is established by plugging the two.

[0091] Specifically, the first portion 1021 of the front panel 102 may also be provided with a plurality of interface through holes 109 at the same height as the bottom plate 22. These interface through holes 109 match the positions of various types of data interfaces on the bottom plate 22, so that the data interfaces can be exposed outside the device housing 1, which is convenient for connecting with external devices through cables. The installation opening 108 may be provided on the second portion 1022 of the front panel 102.

[0092] In summary, the board in the air-conditioning control device provided in the embodiment of the utility model adopts a modular design and provides multiple expansion interfaces so that expansion boards with different functions can be easily plugged into the backplane to facilitate expansion of the functions on the board.

[0093] The train air-conditioning control system provided by the embodiment of the utility model realizes the distributed layout of multiple air-conditioning control devices through an expansion bus to improve the scalability, reliability and performance of the system.

[0094] The above contents are further detailed descriptions of the present invention in combination with specific / preferred implementations, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. An air conditioning control device, comprising: A device housing and a plurality of boards and cards contained in the device housing; wherein the plurality of boards and cards include: Core board; the core board is integrated with a control circuit; Base plate; the base plate is integrated with a plurality of communication interface circuits and a power supply circuit; At least one expansion board; the expansion board is used to: expand the input function and / or output function of the control circuit; Backplane; the backplane is integrated with communication connection lines and power supply connection lines; The core board is plugged into the bottom board; the bottom board is plugged into the back board; the back board is also provided with a plurality of expansion interfaces; One of the expansion boards is plugged into the backplane via the expansion interface, establishes a communication connection with the baseboard via the communication connection line, and establishes an electrical connection with the baseboard via the power supply connection line.

2. The air conditioning control device according to claim 1, characterized in that: The control circuit includes: a main processor core, a real-time processor core and a built-in memory with a preset capacity.

3. The air conditioning control device according to claim 2, characterized in that: The memory comprises: an embedded multimedia card and a low power consumption double data rate memory.

4. The air conditioning control device according to claim 1, characterized in that: The communication interface circuit comprises: A first communication interface circuit based on the RS485 serial communication standard; A second communication interface circuit based on the CAN serial communication protocol; The third communication interface circuit is based on the train real-time data protocol.

5. The air conditioning control device according to claim 1, characterized in that: The control logic recorded in the control circuit is editable.

6. The air conditioning control device according to claim 1, characterized in that: The expansion board includes: A first expansion board having N digital signal input channels; A second expansion board having M digital signal output channels; A third expansion board having E analog signal input channels; a fourth expansion board having F analog signal output channels; a fifth expansion board having n digital signal input channels and m digital signal output channels; and a sixth expansion board having e analog signal input channels, f analog signal output channels, and g electromagnetic expansion valve control signal output channels; Among them, N, M, n, m, E, F, e, f, and g are all positive integers.

7. The air conditioning control device according to any one of claims 1 to 6, characterized in that: Also includes: at least one display device; The display device is arranged on the surface of the device housing; a touch sensing layer is arranged inside the display device; and the touch sensing layer is used to sense the user's operation on the surface of the display device.

8. The air conditioning control device according to claim 7, characterized in that: The communication interface circuit also includes: a display interface circuit; Wherein, the display device is electrically connected to the display interface circuit.

9. The air conditioning control device according to claim 7, characterized in that: The device housing is rectangular and has a first housing surface and a second housing surface that are opposite to each other in the thickness direction; Wherein, a mounting opening adapted to the display device is provided on the surface of the first shell; and the display device is fixed at the mounting opening.

10. A train air conditioning control system, characterized in that: include: Train control equipment; The air conditioning control device according to any one of claims 1 to 9; as well as Expansion bus; There are at least two air-conditioning control devices, one of which is communicatively connected to the train control device; and different air-conditioning control devices are communicatively connected to each other via the expansion bus.

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