EMU air conditioning display setting device

Abstract

The embodiment of the present invention provides a train air conditioner display setter, which includes: an FPGA chip, a power supply circuit, a first current loop communication circuit, a digital tube control circuit, a key control circuit, and a second current loop communication circuit, wherein the power supply circuit, the first current loop communication circuit, the digital tube control circuit, the key control circuit, and the second current loop communication circuit are respectively connected to the FPGA chip; the first current loop communication circuit is used to connect to the air conditioning unit; and the second current loop communication circuit is used to connect to a monitoring device. The train air conditioner display setter provided in this embodiment uses an FPGA chip as the main control chip, which solves the problem that the original imported train air conditioner display setter has a relatively special chip architecture and a relatively special compilation environment, and the chip supply channels are limited and the versatility is poor.

Description

Technical Field

[0001] The invention relates to the technical field of motor vehicles, and in particular to a display setting device for an air conditioner of a motor vehicle group. Background Art

[0002] At present, the EMU air conditioning display setter is imported and must rely on foreign technology. The technical service is not in place and the cost is high.

[0003] The imported EMU air conditioning display setter uses a single-chip microcomputer as the main control chip, an external RAM chip is expanded to control the display setter, and the software is written in assembly language.

[0004] However, the chip architecture and compilation environment of the EMU air-conditioning display setter used in the original imported model are rather special, the chip supply channels are limited, and the universality is poor. Summary of the invention

[0005] The embodiment of the present invention provides a train air conditioner display setter, which solves the problem that the original imported train air conditioner display setter has a special chip architecture and a compilation environment, limited chip supply channels, and poor versatility.

[0006] In a first aspect, an embodiment of the present invention provides a train air conditioner display setter, comprising: a power supply circuit, an FPGA chip, a first current loop communication circuit, and a digital tube control circuit; wherein:

[0007] The power supply circuit, the first current loop communication circuit and the digital tube control circuit are respectively connected to the FPGA chip;

[0008] The first current loop communication circuit is used to connect to the air conditioning unit;

[0009] The FPGA chip is used to transmit the air-conditioning control instructions to the air-conditioning unit through the first current loop communication circuit, and obtain the operating status of the air-conditioning unit through the first current loop communication circuit and control the digital tube control circuit to display the air-conditioning operating status.

[0010] In one possible design, it also includes:

[0011] A key control circuit, wherein the key control circuit is connected to the FPGA chip;

[0012] The button control circuit is used to obtain the air-conditioning control instruction triggered by the user and transmit the air-conditioning control instruction to the FPGA chip.

[0013] In one possible design, it also includes:

[0014] A second current loop communication circuit, the second current loop communication circuit is connected to the FPGA chip, and the second current loop communication circuit is used to connect to a monitoring device;

[0015] The second current loop communication circuit is used to obtain the air conditioning control instruction sent by the monitoring device and transmit the air conditioning control instruction to the FPGA chip.

[0016] In a possible design, the invention further includes: a clock circuit;

[0017] The clock circuit is connected to the FPGA chip;

[0018] The clock circuit is used to control the synchronization between the FPGA chip and the monitoring device.

[0019] In one possible design, it also includes:

[0020] An LED control circuit, wherein the LED control circuit is connected to the FPGA chip;

[0021] The FPGA chip is also used to control the display of the LED control circuit according to the operating status of the air-conditioning unit.

[0022] In one possible design, it also includes:

[0023] A voltage conversion circuit is connected to the power supply circuit, the FPGA chip, the first current loop communication circuit and the second current loop communication circuit respectively.

[0024] In one possible design, it also includes:

[0025] A reset circuit, wherein the reset circuit is connected to the key control circuit and the FPGA chip respectively;

[0026] The reset circuit is used to obtain a reset instruction under the control of the key control circuit, and send the reset instruction to the FPGA chip.

[0027] In one possible design, it also includes:

[0028] A program configuration circuit, wherein the program configuration circuit is connected to the FPGA chip;

[0029] The program configuration circuit is used to store the running program of the FPGA chip.

[0030] In one possible design, it also includes:

[0031] A storage circuit, wherein the storage circuit is connected to the FPGA chip;

[0032] The storage circuit is used to store the operating status of the air conditioning unit.

[0033] In one possible design, the power supply circuit is arranged on a first circuit board, and the FPGA chip and other circuits are arranged on a second circuit board.

[0034] The EMU air conditioning display setter provided in this embodiment includes: an FPGA chip, a power supply circuit, a first current loop communication circuit, a digital tube control circuit, a key control circuit and a second current loop communication circuit; wherein the power supply circuit, the first current loop communication circuit, the digital tube control circuit, the key control circuit and the second current loop communication circuit are respectively connected to the FPGA chip; the first current loop communication circuit is used to connect to the air conditioning unit; the second current loop communication circuit is used to connect to the monitoring device. The second current loop communication circuit obtains the air conditioning control instruction sent by the monitoring device and transmits the air conditioning control instruction to the FPGA chip. The FPGA chip transmits the air conditioning control instruction to the air conditioning unit through the first current loop communication circuit, the key control circuit obtains the air conditioning control instruction sent by the user by triggering the key, and transmits the air conditioning control instruction to the FPGA chip, and the FPGA chip transmits the air conditioning control instruction to the air conditioning unit through the first current loop communication circuit. The FPGA chip obtains the operating status information of the air conditioning unit through the first current loop communication circuit and controls the digital tube control circuit to display the operating status information of the air conditioning unit, and sends the acquired operating status information of the air conditioning unit to the monitoring device through the second current loop communication circuit. The EMU air conditioning display setter provided in this embodiment adopts an FPGA chip as the main control chip, which solves the problem that the chip architecture and compilation environment of the originally imported EMU air conditioning display setter are relatively special, the chip supply channels are limited, and the versatility is poor. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0036] Figure 1 A diagram showing a usage scenario of the EMU air conditioning display setting device provided in an embodiment of the present invention;

[0037] Figure 2 The structure diagram of the EMU air conditioning display setting device provided in this embodiment Figure 1 ;

[0038] Figure 3 A schematic diagram of the structure of the power supply circuit provided in this embodiment;

[0039] Figure 4 The structure diagram of the EMU air conditioning display setting device provided in this embodiment Figure 2 . DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Figure 1 This is a usage scenario diagram of the EMU air conditioning display setting device provided by an embodiment of the present invention. Figure 1 As shown, the air conditioning display setting device 10 is connected to the air conditioning unit 20 and the monitoring device 30 respectively.

[0042] The EMU air conditioning display setter 10 is used for CRH, CRH380A (L), unified vehicles and other models, and is a device for realizing the information transfer function of the air conditioning unit 20 and the monitoring device 30.

[0043] Specifically, the main function of the EMU air conditioning display setter 10 is to obtain the air conditioning control command sent by the monitoring device 30, and send the air conditioning control command sent from the monitoring device 30 to the air conditioning unit 20. At the same time, the EMU air conditioning display setter 10 also displays the operating status information of the air conditioning unit 20, and transmits the operating status information of the air conditioning unit 20 to the monitoring device 30.

[0044] The EMU air conditioning display setter 10 also changes the operating state of the air conditioning unit 20, including the operating temperature and the operating mode, etc. The EMU air conditioning display setter 10 can change the operating state of the air conditioning unit 20 by pressing a button or in other ways. This embodiment does not limit the specific way in which the EMU air conditioning display setter 10 changes the operating state of the air conditioning unit 20.

[0045] The specific structure of the EMU air conditioning display setter 10 is described in detail below in conjunction with a specific embodiment.

[0046] Figure 2 The structure diagram of the EMU air conditioning display setting device provided in this embodiment Figure 1 ,like Figure 2As shown, the EMU air conditioning display setter 10 provided in this embodiment includes: an FPGA chip 101, a power supply circuit 102, a first current loop communication circuit 103, a digital tube control circuit 104, a key control circuit 105 and a second current loop communication circuit 106; wherein,

[0047] The power supply circuit 102 , the first current loop communication circuit 103 , the digital tube control circuit 104 , the key control circuit 105 and the second current loop communication circuit 106 are respectively connected to the FPGA chip 101 ; the first current loop communication circuit 102 is used to connect to the air-conditioning unit 20 ; the second current loop communication circuit 106 is used to connect to the monitoring device 30 .

[0048] Specifically, the FPGA (Field Programmable Gate Array) chip 101 is the main control chip of the EMU air conditioning display setter 10 . The FPGA chip 101 has the characteristics of parallel execution, fast response speed, high reliability and flexible programming.

[0049] Optionally, the FPGA chip 101 uses Verliog as the programming language, and may also use other hardware description languages ​​as the programming language. This embodiment does not impose any specific restrictions on the programming language used by the FPGA chip 101.

[0050] Optionally, FPGA chip 101 may use Xilinx's newer Spartan-6 series FPGA chip products, which have strong substitutability and code portability.

[0051] Optionally, the chip model of the FPGA chip 101 is XC6SLX25. According to the evaluation, XC6SLX25 can realize all the functions of the EMU air conditioning display setter 10 currently required, and the chip resource occupancy is about 60%, so that resources can be reserved for the functional requirements that may be required in the future of the EMU air conditioning display setter 10. This embodiment does not limit the specific chip model of the FPGA chip.

[0052] Specifically, the power supply circuit 102 is used to supply power to the EMU air conditioner display setter 10. The EMU air conditioner display setter 10 receives a 100V DC voltage, and the power supply circuit 102 converts the 100V DC voltage into 5V DC to supply power to the EMU air conditioner display setter 10.

[0053] Figure 3 Schematic diagram of the structure of the power supply circuit provided in this embodiment. Figure 3 As shown, the power supply circuit 102 provided in this embodiment includes: an input power supply filter 1021, a DC / DC conversion circuit 1022 and an output power supply filter 1023;

[0054] The DC / DC conversion circuit 1022 is connected to the input power filter 1021 and the output power filter 1023 respectively.

[0055] Specifically, the input power filter 1021 is used to filter out the noise signal on the 100V DC voltage input to the EMU air conditioning display setter 10; the DC / DC conversion circuit 1022 is used to convert the 100V DC voltage into a 5V DC voltage to power the EMU air conditioning display setter 10; the output power filter 1023 is used to filter out the noise signal on the 5V DC voltage output by the DC / DC conversion circuit 1022.

[0056] Optionally, the power circuit 102 uses TDK's mature power module CN50A110-5, which can also be used in Hitachi air conditioning control devices. The input voltage range of the power module CN50A110-5 is a DC voltage of 70V to 125V, the output voltage range is a DC voltage of 5±5%V, and the interface uses a 5V JC2 interface.

[0057] The power supply circuit 102 provided in this embodiment adopts the power supply module CN50A110-5 of TDK. The power supply module CN50A110-5 adopts a mature DC-DC power supply module to build a power conversion circuit, making the circuit design more concise and easy to maintain.

[0058] Specifically, the digital tube control circuit 104 is used to display the operating status information of the air conditioning unit 20, such as the operating temperature and fault information of the air conditioning unit. Optionally, the digital tube control circuit 104 includes five 8-bit digital tubes, and the digital tube control circuit 104 controls the lighting of the five 8-bit digital tubes to display the operating status information of the air conditioning unit 20.

[0059] For example, the digital tube control circuit 104 controls 5 8-bit digital tubes to light up and display 12.3, which means that the fan of the air-conditioning unit 20 is abnormal; the digital tube control circuit 104 controls 5 8-bit digital tubes to light up and display 14.2, which means that the compressor of the air-conditioning unit 20 is relieved of abnormality; the digital tube control circuit 104 controls 5 8-bit digital tubes to light up and display 23, which means that the operating temperature of the air-conditioning unit 20 is 23 degrees Celsius. This embodiment will not be repeated here.

[0060] Specifically, the button control circuit 105 is used to receive the air conditioning control command triggered by the user to control the operating state of the air conditioning unit 20. Optionally, the button control circuit 105 includes 13 buttons, and the user can send different control commands to the button control circuit 105 by triggering different buttons to control the operating state of the air conditioning unit 20.

[0061] For example, the user can trigger a button to send a heating or cooling instruction to the button control circuit 105; the user can also trigger a button to send a temperature increase or temperature decrease instruction to the button control circuit 105; the user can also trigger a button to send a fault check instruction to the button control circuit 105. This embodiment will not be described in detail here.

[0062] The specific working process of the EMU air conditioning display setting device 10 provided in this embodiment is described in detail below:

[0063] The second current loop communication circuit 106 obtains the air conditioning control instruction sent by the monitoring device 30 and transmits the air conditioning control instruction to the FPGA chip 101. The FPGA chip 101 transmits the air conditioning control instruction to the air conditioning unit 20 through the first current loop communication circuit 103.

[0064] The button control circuit 105 obtains the air conditioning control instruction sent by the user by triggering the button, and transmits the air conditioning control instruction to the FPGA chip 101. The FPGA chip 101 transmits the air conditioning control instruction to the air conditioning unit 20 through the first current loop communication circuit 103.

[0065] The FPGA chip 11 obtains the operating status information of the air conditioning unit 20 through the first current loop communication circuit 103 and controls the digital tube control circuit 104 to display the operating status information of the air conditioning unit 20. And the acquired operating status information of the air conditioning unit is sent to the monitoring device 30 through the second current loop communication circuit 106.

[0066] The EMU air conditioning display setter provided in this embodiment includes: an FPGA chip, a power supply circuit, a first current loop communication circuit, a digital tube control circuit, a key control circuit and a second current loop communication circuit; wherein the power supply circuit, the first current loop communication circuit, the digital tube control circuit, the key control circuit and the second current loop communication circuit are respectively connected to the FPGA chip; the first current loop communication circuit is used to connect to the air conditioning unit; the second current loop communication circuit is used to connect to the monitoring device; the second current loop communication circuit obtains the air conditioning control instruction sent by the monitoring device and transmits the air conditioning control instruction to the FPGA chip; the FPGA chip transmits the air conditioning control instruction to the air conditioning unit through the first current loop communication circuit, the key control circuit obtains the air conditioning control instruction sent by the user by triggering the key, and transmits the air conditioning control instruction to the FPGA chip, and the FPGA chip transmits the air conditioning control instruction to the air conditioning unit through the first current loop communication circuit; the FPGA chip obtains the operating status information of the air conditioning unit through the first current loop communication circuit and controls the digital tube control circuit to display the operating status information of the air conditioning unit, and sends the obtained operating status information of the air conditioning unit to the monitoring device through the second current loop communication circuit. The EMU air conditioning display setter provided in this embodiment adopts an FPGA chip as the main control chip, which solves the problem that the chip architecture and compilation environment of the originally imported EMU air conditioning display setter are relatively special, the chip supply channels are limited, and the versatility is poor.

[0067] The EMU air conditioning display setter provided in this embodiment is further described in detail below in conjunction with specific embodiments.

[0068] Figure 4 The structure diagram of the EMU air conditioning display setting device provided in this embodiment Figure 2 ,like Figure 4 As shown, the EMU air conditioning display setter 10 provided in this embodiment further includes: a voltage conversion circuit 107, an LED control circuit 108, a reset circuit 109, a program configuration circuit 110, a storage circuit 111 and a clock circuit 112; wherein,

[0069] The LED control circuit 108, the program configuration circuit 110, the storage circuit 111 and the clock circuit 112 are respectively connected to the FPGA chip 101;

[0070] The voltage conversion circuit 107 is connected to the power supply circuit 102 , the FPGA chip 101 , the first current loop communication circuit 103 , and the second current loop communication circuit 106 , respectively.

[0071] The reset circuit 109 is connected to the key control circuit 105 and the FPGA chip 101 respectively.

[0072] Optionally, the power circuit 102 is arranged on the first circuit board, and the FPGA chip 101, the power circuit 102, the first current loop communication circuit 103, the digital tube control circuit 104, the key control circuit 105, the second current loop communication circuit 106, the voltage conversion circuit 107, the LED control circuit 108, the reset circuit 109, the program configuration circuit 110, the storage circuit 111 and the clock circuit 11 are arranged on the second circuit board. The 5V DC voltage output by the power circuit 102 is used to power the second circuit board.

[0073] Specifically, the voltage conversion circuit 107 is used to convert the 5V DC voltage output by the power supply circuit 102 to provide power for the FPGA chip 101, the first current loop communication circuit 103, the second current loop communication circuit 106 and other circuits.

[0074] Optionally, the voltage conversion circuit 107 includes: an input voltage filter 1071, a first DC / DC conversion circuit 1072, a second DC / DC conversion circuit 1073, a third DC / DC conversion circuit 1074 and a fourth DC / DC conversion circuit 1075; wherein,

[0075] The input voltage filter 1071 is connected to the first DC / DC conversion circuit 1072 , the second DC / DC conversion circuit 1073 , the third DC / DC conversion circuit 1074 , and the fourth DC / DC conversion circuit 1075 , respectively.

[0076] The input voltage filter 1071 is used to filter out the noise signal on the 5V DC voltage of the input voltage conversion circuit 107; the first DC / DC conversion circuit 1072 is used to convert the 5V DC voltage into a 3.3V DC voltage to power the FPGA chip 101 and the reset circuit 109; the second DC / DC conversion circuit 1073 is used to convert the 5V DC voltage into a 2.5V DC voltage to power the storage circuit 111 and the clock circuit 112; the third DC / DC conversion circuit 1074 is used to convert the 5V DC voltage into a 1.2V DC voltage to power the digital tube control circuit 104 and the LED control circuit 108; the fourth DC / DC conversion circuit 1075 is used to convert the 5V DC voltage into a 24V DC voltage to power the first current loop communication circuit 103 and the second current loop communication circuit 106.

[0077] Specifically, the LED control circuit 108 is used to display the operating status information of the air conditioning unit 20, such as the operating status and fault information of the air conditioning unit. Optionally, the LED control circuit 108 includes 13 LEDs, and the LED control circuit 108 displays the operating status information of the air conditioning unit 20 by lighting up the 13 LEDs.

[0078] For example, the LED control circuit 108 displays that the operating state of the air conditioning unit 20 is the heating state by lighting up 13 LEDs. The LED control circuit 108 also displays that the operating state of the air conditioning unit 20 is the cooling state by lighting up 13 LEDs. The LED control circuit 108 also displays that the operating state of the air conditioning unit 20 is the fault state by lighting up 13 LEDs. This embodiment is not described in detail here.

[0079] Specifically, the reset circuit 109 is used to obtain the reset instruction sent by the key control circuit 105 by triggering the reset key, and reset the FPGA chip 101. Optionally, the reset circuit 109 can use a watchdog chip to implement the reset function.

[0080] Optionally, the watchdog chip is a watchdog chip ADM706TAR. The watchdog chip can monitor the reset button state of the button control circuit 105. When the reset button state is pressed, the display setter FPGA chip 101 is reset. This embodiment does not limit the specific implementation of the reset circuit 109.

[0081] Specifically, the program configuration circuit 110 is used to store the running program of the FPGA chip 101. Optionally, the program configuration circuit 110 uses a SPI FLASH chip to store the running program of the FPGA chip 101. According to the FPGA program size and the chip program storage margin requirements, the SPI FLASH chip can select the M25P32-VME6 chip.

[0082] Specifically, the storage circuit 111 is used to store the operation status information of the air conditioning unit 20. Optionally, the storage circuit 111 uses a 128Mb NAND FLASH chip and an EEPROM chip, the NAND FLASH chip is used as data storage, and the EEPROM chip is used as auxiliary storage.

[0083] Optionally, the NAND FLASH chip uses Micron's NAND128W3A2BN6E chip. Micron's NAND128W3A2BN6E chip can store 48 hours of operating status information of the air conditioning unit 20.

[0084] Optionally, the EEPROM chip uses an I2C-type EEPROM TSSOP8 chip with easy access. Compared with imported products, the TSSOP8 chip has improved capacity and occupies less space on the substrate. The TSSOP8 chip can store the standard cooling temperature, standard heating temperature and 30 fault codes of the air-conditioning unit 20. This embodiment does not limit the specific implementation of the storage circuit 111.

[0085] Specifically, the clock circuit 112 is used to control the synchronization of the FPGA chip 101 and the monitoring device 30, so that the EMU air conditioning display setter 10 can accurately determine the time when the air conditioning unit fault occurs even if the communication with the monitoring device 30 is interrupted, thereby making the fault code and fault data recording more accurate. Optionally, the clock circuit 112 uses the time management chip M41T81SM6F. When the EMU network communication is poor, the EMU air conditioning display setter 10 can continuously time even if the communication with the monitoring device 30 is interrupted, which solves the problem that the imported air conditioning display setter does not have its own timing function and cannot give the accurate time when the air conditioning unit fault occurs when it has poor communication with the on-board network. This embodiment does not limit the specific implementation method of the clock circuit 112.

[0086] The specific working process of the EMU air conditioning display setting device 10 provided in this embodiment is described in detail below:

[0087] The reset circuit 109 obtains the reset instruction sent by the button control circuit 105 by triggering the reset button, and resets the FPGA chip 101.

[0088] The second current loop communication circuit 106 obtains the air conditioning control instruction sent by the monitoring device 30, and transmits the air conditioning control instruction to the FPGA chip 101. The FPGA chip 101 parses the air conditioning control instruction, and then performs binary conversion on the parsed air conditioning control instruction, and stores it through the storage circuit 111. The air conditioning control instruction is then converted into decimal, and then data is parsed, and finally transmitted to the air conditioning unit 20 through the first current loop communication circuit 103.

[0089] The button control circuit 105 obtains the air conditioning control instruction sent by the user through the trigger button, and transmits the air conditioning control instruction to the FPGA chip 101. The FPGA chip 101 parses the air conditioning control instruction, and then performs binary conversion on the parsed air conditioning control instruction, and stores it through the storage circuit 111. The air conditioning control instruction is then converted into decimal, and then data is parsed, and finally transmitted to the air conditioning unit 20 through the first current loop communication circuit 103.

[0090] The FPGA chip 11 obtains the operating status information of the air-conditioning unit 20 through the first current loop communication circuit 103, analyzes the operating status information of the air-conditioning unit 20, and then performs binary conversion on the analyzed operating status information, stores it through the storage circuit 111 and controls the digital tube control circuit 104 and the LED control circuit 108 to display the operating status information of the air-conditioning unit 20. The operating status information is converted into decimal, and then the data is analyzed, and finally sent to the monitoring device 30 through the second current loop communication circuit 106.

[0091] The EMU air conditioner display setter provided in this embodiment also includes: a voltage conversion circuit, an LED control circuit, a reset circuit, a program configuration circuit, a storage circuit and a clock circuit; wherein the LED control circuit, the program configuration circuit, the storage circuit and the clock circuit are respectively connected to the chip; the voltage conversion circuit is respectively connected to the power supply circuit, the FPGA chip, the first current loop communication circuit and the second current loop communication circuit. The reset circuit is respectively connected to the key control circuit and the FPGA chip. The EMU air conditioner display setter provided in this embodiment uses an FPGA chip as the main control chip, which solves the problem that the chip architecture and its compilation environment of the original imported EMU air conditioner are relatively special, the chip supply channels are limited, and the versatility is poor. The clock circuit can still keep time uninterruptedly even when the EMU network communication is poor and the EMU air conditioner display setter is disconnected from the monitoring device, which solves the problem that the imported air conditioner display setter does not have its own timing function and cannot give the accurate time of the air conditioner unit failure when it has poor communication with the on-board network.

[0092] In the present invention, unless otherwise clearly stipulated and limited, the terms "connection", "connected", "fixed", "installed", etc. should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to specific circumstances.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display setting device for an EMU air conditioner, characterized in that: include: Power supply circuit, FPGA chip, first current loop communication circuit and digital tube control circuit; wherein, The power supply circuit, the first current loop communication circuit and the digital tube control circuit are respectively connected to the FPGA chip; The first current loop communication circuit is used to connect to the air conditioning unit; The FPGA chip is used to transmit the air-conditioning control instruction to the air-conditioning unit through the first current loop communication circuit, and obtain the operating status information of the air-conditioning unit through the first current loop communication circuit and control the digital tube control circuit to display the operating status information of the air-conditioning unit; The EMU air conditioning display setter also includes: a key control circuit, a program configuration circuit, and a storage circuit; wherein, The button control circuit, the program configuration circuit, and the storage circuit are respectively connected to the FPGA chip; The button control circuit is used to obtain the air-conditioning control command triggered by the user and transmit the air-conditioning control command to the FPGA chip, the program configuration circuit is used to store the running program of the FPGA chip, and the storage circuit is used to store the running status of the air-conditioning unit; The EMU air conditioning display setting device also includes: A second current loop communication circuit, the second current loop communication circuit is connected to the FPGA chip, and the second current loop communication circuit is used to connect to a monitoring device; The second current loop communication circuit is used to obtain the air conditioning control instruction sent by the monitoring device and transmit the air conditioning control instruction to the FPGA chip; The EMU air conditioning display setter also includes: a clock circuit; The clock circuit is connected to the FPGA chip; The clock circuit is used to control the synchronization between the FPGA chip and the monitoring device; The EMU air conditioning display setter further includes: a voltage conversion circuit, wherein the voltage conversion circuit is respectively connected to the power supply circuit, the FPGA chip, the first current loop communication circuit, and the second current loop communication circuit; The power supply circuit is arranged on a first circuit board, and the FPGA chip and other circuits are arranged on a second circuit board.

2. The EMU air conditioning display setting device according to claim 1, characterized in that: Also includes: An LED control circuit, wherein the LED control circuit is connected to the FPGA chip; The FPGA chip is also used to control the display of the LED control circuit according to the operating status information of the air-conditioning unit.

3. The EMU air conditioning display setting device according to claim 1, characterized in that: Also includes: A reset circuit, wherein the reset circuit is connected to the key control circuit and the FPGA chip respectively; The reset circuit is used to obtain a reset instruction under the control of the key control circuit, and send the reset instruction to the FPGA chip.

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