Passenger car air conditioner control method and device

Abstract

The invention discloses a passenger car air conditioner control method and device, and the method comprises the following steps: carrying out fault self-inspection after power-on, and starting an operation indication relay if no fault exists; collecting temperature data in the compartment, and selecting an operation mode of the air conditioner according to the temperature data; after the air conditioner runs, the working state of the fan is monitored in real time, and when it is detected that the started high-speed ventilation fan or low-speed ventilation fan breaks down, the corresponding running indication relay is turned off, and the low-speed ventilation fan or the high-speed ventilation fan is turned on; in the refrigeration mode, the working states of the condenser and the compressor are monitored in real time, and when faults occur, fault alarming is carried out; and in the heating mode, the working state of the auxiliary heater is monitored in real time, and a fault alarm is given when a fault occurs. According to the passenger car air conditioner control method and device, the temperature control accuracy and comfort of the passenger car compartment are improved, the emergency guarantee capacity is high, and the maintenance cost is low.

Description

Technical Field

[0001] This invention relates to the technical field of train air conditioning, and specifically to a passenger car air conditioning control method and control device. Background Technology

[0002] Current rail transit vehicles, especially sleeper trains, have high requirements for the reliability and safety of air conditioning control due to their enclosed environment. When the air conditioning controller software malfunctions and causes the air conditioning to stop working, it requires personnel with certain professional skills to reset the air conditioning controller or manually operate the air conditioning, which is inefficient and prone to errors.

[0003] Existing technology CN203615540U discloses a DSP-based air conditioning controller for rail transit vehicles. This controller uses a DSP main control module to read the operating status of each air conditioning unit and the ambient temperature, enabling real-time control of the air conditioning system across different operating conditions: ventilation, full cooling, partial cooling, full heating, partial heating, off, and automatic. It also performs real-time monitoring and processing of the air conditioning unit status. Suitable for train air conditioning control, it allows for flexible control of the air conditioning unit's operation. However, existing air conditioning controllers lack self-diagnosis of temperature sensors and an independent emergency mechanism.

[0004] In summary, there is a need to design a bus air conditioning control method and control device to solve the problems in the existing technology. Summary of the Invention

[0005] To address the problems in the prior art, the present invention provides a bus air conditioning control method and control device, which solves the problems of existing air conditioning controllers lacking fault self-diagnosis of temperature sensors and lacking an independent emergency mechanism.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A bus air conditioning control device, comprising: The temperature acquisition module is used to collect real-time temperature data inside the carriage. The core control module, which is connected to the temperature acquisition module, is used to output control commands based on the real-time temperature data; The peripheral relay module is connected to the core control module via a signal output module. The peripheral relay module performs start-stop control according to the control command. The peripheral relay module includes a running indicator relay, a heating module relay, a ventilation module relay, and a cooling module relay. An emergency control module includes a manual switch for the air conditioning refrigeration unit. The emergency control module is connected to the refrigeration module relay. When the core control module fails to start the refrigeration module relay due to a malfunction, the emergency control module starts the refrigeration module relay through the manual switch.

[0007] In some embodiments of the present invention, when the emergency control module is in the activated state, the operating power supply of the core control module is in the disconnected state; The manual switch includes a condenser fan control switch and a compressor control switch; the condenser fan control switch and the compressor control switch are interlocked, and when the condenser fan control switch and the compressor control switch are both in the open state, the compressor is in the start state.

[0008] In some embodiments of the present invention, the temperature acquisition module includes a fresh air temperature sensor, a supply air temperature sensor, a return air temperature sensor, a private room temperature sensor, and a crew room temperature sensor; when the core control module detects abnormal data from a certain temperature sensor, it determines that the corresponding temperature sensor has failed, and then the real-time temperature data acquired by that temperature sensor is removed from the temperature weighted fusion calculation.

[0009] In some embodiments of the present invention, when the core control module determines that the data collected by the fresh air sensor is abnormal, the fresh air sensor fails, and the core control module outputs a control command to disconnect the operation indicator relay and a control command to start the fault indicator light.

[0010] In some embodiments of the present invention, the core control module includes a main control unit and an FPGA unit. The FPGA unit is used to convert the real-time temperature data and upload it to the main control unit. The main control unit is used to judge and calculate based on the uploaded data, generate control commands, and send the control commands back to the FPGA unit. The FPGA unit is used to output the control commands to the peripheral relay module.

[0011] In some embodiments of the present invention, a bus air conditioning control method is provided, comprising the following steps: After power-on, a fault self-check is performed. If no fault is found, the operation indicator relay is activated. Collect temperature data inside the carriage and select the air conditioning operating mode based on the temperature data; After the air conditioner is turned on, the working status of the fan is monitored in real time. When a fault is detected in the high-speed ventilation fan or the low-speed ventilation fan that has been turned on, the corresponding operation indicator relay is turned off and the low-speed ventilation fan or the high-speed ventilation fan is turned on. In cooling mode, the operating status of the condenser and compressor is monitored in real time. When a fault occurs, the operation indicator relay is turned off and a fault alarm is triggered. In heating mode, the operating status of the auxiliary heater is monitored in real time. When a fault occurs, the operation indicator relay is turned off and a fault alarm is triggered.

[0012] In some embodiments of the present invention, the air conditioning control method further includes collecting temperature data in real time and dynamically updating temperature trends during air conditioning operation, and switching to the corresponding operating mode when the calculated temperature crosses the temperature threshold value of the current operating mode.

[0013] In some embodiments of the present invention, the air conditioning control method further includes manually selecting the corresponding carriage type by toggling a selection switch before the air conditioning is turned on, wherein the carriage type includes seat / sleeper carriages and dining carriages.

[0014] In some embodiments of the present invention, an electronic device is provided, comprising: A processor, and a memory and a transceiver communicatively connected to the processor; The memory stores computer-executed instructions; the transceiver is used for sending and receiving data. The processor executes computer execution instructions stored in the memory to implement the above control method.

[0015] In some embodiments of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the control method described above.

[0016] The technical solution of the present invention has the following technical effects compared with the prior art: This invention, through the coordination of a temperature acquisition module and a core control module, enables the diagnosis and disabling of malfunctioning temperature sensors, allowing the air conditioning controller to function normally. Simultaneously, by incorporating an emergency control module, it ensures that the air conditioning can be activated even if the core control module fails, maintaining a comfortable temperature inside the bus. The bus air conditioning control method and device of this invention achieve precise and comfortable temperature control in the bus compartment, enhanced emergency response capabilities, and low maintenance costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a bus air conditioning control device according to an embodiment of the present invention.

[0019] Figure 2 This is a flowchart illustrating a bus air conditioning control method according to an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the structure of the electronic device.

[0021] Reference numerals: 100, Control device; 110, Temperature acquisition module; 120, Core control module; 130, Peripheral relay module; 140, Emergency control module; 150, Signal input module; 160, Signal output module; 170, Communication module; 180, Power supply module; 200, Electronic equipment; 210, Processor; 220, Memory; 230, Transceiver. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0024] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, direct connections, or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] The following disclosure provides many different embodiments or examples for implementing different structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0028] Example 1, Reference Figure 1 As shown, a bus air conditioning control device 100 includes: Temperature acquisition module 110 is used to collect real-time temperature data inside the carriage. The core control module 120 is connected to the temperature acquisition module and is used to output control commands based on the real-time temperature data. The peripheral relay module 130 is connected to the core control module 120 through the signal output module 160. The peripheral relay module 130 realizes start and stop control according to the control command. The peripheral relay module 130 includes a running indicator relay, a heating module relay, a ventilation module relay, and a cooling module relay. The emergency control module 140 includes a manual switch for the air conditioning refrigeration unit. The emergency control module 140 is connected to the refrigeration module relay. When the core control module 120 fails to start the refrigeration module relay due to a malfunction, the emergency control module 140 starts the refrigeration module relay through the manual switch.

[0029] Specifically, the control device in this embodiment is a bus air conditioning controller that integrates multiple protections, precise control, emergency protection, and fault tracing.

[0030] In some embodiments of the present invention, the temperature acquisition module 110 includes a fresh air temperature sensor, a supply air temperature sensor, a return air temperature sensor, a private room temperature sensor, and a crew room temperature sensor.

[0031] Specifically, the fresh air temperature sensor is located at the ventilation point between the passenger compartment and the outside environment, meaning it is used to collect the external ambient temperature. Therefore, when the fresh air temperature sensor malfunctions, it indicates that the currently collected external ambient temperature data is invalid and cannot be used as a basis for adjusting the air conditioning temperature. Consequently, the core control module 120 outputs a control command to disconnect the operation indicator relay and simultaneously outputs a control command to activate the fault indicator light. In other words, when the fresh air temperature sensor malfunctions, the core control module 120 controls the bus air conditioner to stop operating, and it will resume operation after the fault is cleared.

[0032] The supply air temperature sensor and return air temperature sensor are installed at the air supply and return air vents inside the passenger compartment. The compartment temperature sensor is installed within the compartment itself, as each compartment is a separate space from the regular passenger compartments. Since passenger cars typically have multiple compartments, each compartment has a temperature sensor to collect the real-time temperature within that compartment. Similarly, the crew compartment temperature sensor is installed in the crew compartment, as it is a separate space from the regular passenger compartments, and is used to collect the real-time temperature inside the crew compartment.

[0033] When the core control module 120 detects abnormal data from a certain temperature sensor (supply air temperature sensor, return air temperature sensor, cabin temperature sensor, or crew room temperature sensor), it determines that the corresponding temperature sensor has failed and then removes the real-time temperature data collected by the temperature sensor from the temperature weighted fusion calculation; that is to say, the real-time temperature measured by the temperature sensor no longer affects the operation and control of the air conditioner.

[0034] In some embodiments of this application, the temperature acquisition sensor further includes an FPGA unit that converts the analog signal of the sensor into a digital signal via an A / D conversion circuit and then transmits it to the core control module 120.

[0035] In some embodiments of this application, the core control module 120 includes a main control unit and an FPGA unit. The FPGA unit is used to convert the real-time temperature data and upload it to the main control unit. The main control unit is used to judge and calculate based on the uploaded data, generate control commands, and send the control commands back to the FPGA unit. The FPGA unit is used to output the control commands to the peripheral relay module 130.

[0036] Specifically, in this embodiment, the core control module 120 adopts an ARM+FPGA chip solution: ARM is responsible for overall control, task scheduling, and other functions through peripheral interfaces; FPGAs acquire data, process digital signals, and communicate data through input / output pins. The two are connected through a parallel interface to enable data interaction and collaborative work.

[0037] In some embodiments of the present invention, the bus air conditioning control device further includes a power supply module 180, a signal input module 150, a signal output module 160, a communication module 170, and a memory. The power supply module 180 provides power to the core control module 120; the signal input module 150 employs an opto-isolation design to achieve electrical isolation between the control core and peripheral circuits, effectively suppressing electromagnetic interference. The signal output module 160 is driven by an FPGA through level conversion to a peripheral relay module 130. The peripheral relay module 130 includes relay types: operation indicator relays, heating module relays (including main heating relays, auxiliary heating relays, room 1 heating relays, room 2 heating relays…room n heating relays), ventilation module relays (including high-speed ventilation fan relays, low-speed ventilation fan relays), and refrigeration module relays (including condenser fan relays, compressor 1 relays, compressor 2 relays).

[0038] The communication module includes an RS232 communication interface and a CAN communication interface: it enables bidirectional data interaction with the host computer via a USB-RS232 interface; the host computer can read information such as the controller's operating mode, the temperature of each sensor, and the interface status in real time. The memory uses an EEPROM, which is controlled by an ARM processor to write fault information: each piece of information includes the fault occurrence time, the values ​​of each temperature sensor, the device's operating status, and the status of peripheral devices.

[0039] In some embodiments of the present invention, the emergency control module 140 can be activated by an emergency refrigeration module relay to ensure that refrigeration can be activated in case the controller fails to operate during high-temperature weather.

[0040] For example, the manual switches in the emergency control module 140 are three pull-type toggle switches located on the upper part of the air conditioner controller, which control the condenser fan, compressor 1, and compressor 2 respectively. The condenser fan control switch and the compressor control switch are interlocked. When both the condenser fan control switch and the compressor control switch are in the "on" state, the compressor is in the "start" state. That is to say, simply turning the compressor switch on will not turn on the compressor. Only when the condenser fan switch is turned on will the compressor switch circuit form a complete circuit, and only then can the compressor start.

[0041] In some embodiments of the present invention, when the emergency control module 140 is in the activated state, the operating power of the core control module 120 is in the deactivated state; that is, in hot weather, if the core control module 120 cannot operate in cooling mode due to the failure of the fresh air temperature sensor or other reasons, the emergency control module 140 is activated and the power of the core control module 120 is deactivated.

[0042] In some embodiments of the present invention, the emergency control module 140 is provided with a window cover, so that emergency operations can be completed without removing the upper cover in an emergency.

[0043] The operation process of the control device in this embodiment is as follows: The bus temperature control device provided in this embodiment is an air conditioning controller with temperature sensor diagnostic and emergency control functions. It comprises a power module 180, a core control module 120, a signal input module 150, a signal output module 160, an emergency control module 140, a temperature acquisition module, a communication module, a vehicle model selection module, and a memory. All modules are electrically connected to form a complete control system. The temperature acquisition module collects data from various temperature sensors and uploads it to the FPGA chip of the core control module 120 after AD conversion. The FPGA converts the data and uploads it to the MCU for data calculation and analysis. If any temperature sensor data is abnormal, the MCU determines whether the temperature sensor is malfunctioning and performs relevant calculations. The system operates in different states based on the corresponding data and sends operating instructions to the FPGA. The FPGA controls the corresponding output pins according to the operating instructions to control the output of peripheral relays through the signal output module 160. The signal input module 150, after photoelectric isolation, transmits the collected signals to the FPGA input pins. The FPGA determines the peripheral signals of the controller based on the input pin status, converts the signals into data, and uploads them to the MCU. The MCU analyzes the data and determines the peripheral feedback signals, then sends relevant instructions to the FPGA. The FPGA performs corresponding actions based on the instructions. When the peripheral signals of the air conditioner controller malfunction, the MCU saves the status of all relevant FPGA input / output ports, the current temperature data, and related data to the memory for later retrieval. Emergency operation, in order to ensure the normal operation of the air conditioner when the controller malfunctions, can be performed by activating the ventilation relay, the condenser fan relay, and the compressor relay in the refrigeration module, while simultaneously shutting down the power module 180 of the air conditioner controller, thus ensuring the normal operation of the air conditioner. The vehicle model selection is achieved by transmitting a signal to the core control module 120 via a selector switch. The system then selects the corresponding control function based on the signal and sends the command to the FPGA. The RS232 interface of the communication module is used for data transmission and online debugging with the host computer. It can upload relevant system operating statuses to the host computer and display them in real time. It can also be used to debug the air conditioning controller and test relevant control outputs through the host computer. The CAN port is used for communication with the vehicle's CAN bus to upload or receive relevant data.

[0044] It should be understood that the bus air conditioning control device 100 here is embodied in the form of a functional module. The term "module" here can refer to application-specific integrated circuits (ASICs), electronic circuits, processors (e.g., shared processors, proprietary processors, or group processors, etc.) and memories for executing one or more software or firmware programs, integrated logic circuits, and / or other suitable components supporting the described functions. In an alternative example, those skilled in the art will understand that the bus air conditioning control device 100 can be specifically the electronic device 200 in Embodiment 3, or the functions of the electronic device 200 in Embodiment 3 can be integrated into the bus air conditioning control device 100. The bus air conditioning control device 100 can be used to execute the various processes and / or steps corresponding to the electronic device 200 in the control method embodiments; to avoid repetition, these will not be described further here.

[0045] The aforementioned bus air conditioning control device 100 has the function of implementing the corresponding steps executed by the electronic device 200 of the control method in Embodiment 2; the aforementioned function can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the aforementioned function. For example, the aforementioned acquisition module can be a communication interface, such as a transceiver interface.

[0046] In the embodiments of this application, Figure 1 The bus air conditioning control device 100 can also be a chip or a chip system, such as a system on chip (SoC).

[0047] Example 2, Reference Figure 2 As shown, a method for controlling the air conditioning of a bus includes the following steps: Step S1: Perform a fault self-check after power-on. If there is no fault, turn on the operation indicator relay. In this step, the fault self-check process includes checking whether the equipment and power supply are normal. If an abnormality is found, the system is stopped and awaits manual hardware reset. If normal, the operation indicator relay is activated, and the microcontroller is initialized.

[0048] Step S2: Collect temperature data inside the carriage and select the air conditioning operating mode based on the temperature data; Specifically, the temperature range of the air conditioning operation mode is dynamically adjusted based on the temperature change trend (rising or falling) obtained from the temperature data inside the carriage.

[0049] Air conditioners include the following operating modes: full heating mode, half heating mode, weak ventilation mode, strong ventilation mode, half cooling mode, and full cooling mode.

[0050] The correspondence between air conditioner operating modes and temperature ranges is as follows: During initial power-on or temperature rise (temperature changes from low to high): when T≤t 11 It is in full warm mode; when t 11 <T≤t 12 The time is a semi-warm mode; when t 12 <T≤t 13 The ventilation mode is currently in low-power mode; when t 13 <T≤t 14 This is the strong ventilation mode; when t 14 <T≤t 15 The time is in semi-cool mode; when T > t 15 It is currently in full cooling mode.

[0051] When the temperature decreases (changes from high to low): when T ≥ t 25 It is in full cooling mode; when t 24 ≤T<t 25 It is in semi-cool mode; when t 23 ≤T<t 24 This is the strong ventilation mode; when t 22 ≤T<t 23 The ventilation mode is currently in low-power mode; when t 21 ≤T<t 22 The time is a semi-warm mode; when T < t 21 It is currently in full warm mode.

[0052] The critical temperature values ​​within the temperature rise range are all slightly higher than the critical temperature values ​​within the temperature fall range (i.e., t). 1n >t 2n ).

[0053] Step S3: After the air conditioner is running, monitor the working status of the fan in real time. If a fault is detected in the high-speed ventilation fan or the low-speed ventilation fan that has been turned on, turn off the corresponding operation indicator relay and turn on the low-speed ventilation fan or the high-speed ventilation fan. In cooling mode, the operating status of the condenser and compressor is monitored in real time. When a fault occurs, the operation indicator relay is turned off and a fault alarm is triggered. In heating mode, the operating status of each heater is monitored in real time. When a fault occurs, the operation indicator relay is turned off and a fault alarm is triggered.

[0054] Specifically, step S31, the air conditioning control method further includes manually selecting the corresponding carriage type by toggling a selection switch before the air conditioning is turned on. The carriage type includes seat / sleeper carriages and dining carriages.

[0055] Because different types of carriages have different external input / output devices and control logic, the controller will select and activate the corresponding control program based on the carriage type selected by the switch.

[0056] Step S32: During the operation of the air conditioner, the temperature is collected in real time and the temperature trend is dynamically updated. When the calculated temperature crosses the temperature threshold of the current operating mode, the corresponding operating mode is switched.

[0057] Step S33: The heating modes include full heating mode and half heating mode, and the control logic of full heating mode and half heating mode is the same.

[0058] Continue to refer to Figure 2 As shown, in full heating mode, the low-speed ventilation fan relay is turned on to check the working status of the low-speed ventilation fan: if the low-speed ventilation fan malfunctions, the running status relay is turned off, a fault alarm is triggered, and the high-speed ventilation fan is turned on to proceed to the next step; if the low-speed ventilation fan is normal, the process proceeds directly to the next step, which involves turning on the main heater relay, the auxiliary heater relay, the room 1 heater relay, the room 2 heater relay, ..., the room n heater relay, and checking the working status of all heaters.

[0059] In semi-warm mode, activate the low-speed ventilation fan relay to check the low-speed ventilation fan's operating status. If the low-speed ventilation fan malfunctions, deactivate the operating status relay, trigger a fault alarm, activate the high-speed ventilation fan, and proceed to the next step. If the low-speed ventilation fan is functioning normally, proceed directly to the next step, which involves activating the main heater relay, the room 1 heater relay, the room 2 heater relay, and so on, activating the room n heater relay, and checking the operating status of all heaters.

[0060] In the semi-heating and full-heating operation modes, a temperature value t is set. r This value is slightly higher than the boundary temperature between semi-heated and weakly ventilated conditions. When the temperature value obtained by any room temperature sensor is greater than t... r When the heater in the designated room is activated, the heater relay for that room will be turned off. If the heater malfunctions, the operating status relay will be turned off and a fault alarm will be triggered; otherwise, a cyclic detection will be initiated.

[0061] The cooling modes include full cooling mode and half cooling mode, and the control logic of full cooling mode and half cooling mode is the same.

[0062] Continue to refer to Figure 2 As shown, in full cooling mode, the high-speed ventilation fan relay is turned on to detect the working status of the high-speed ventilation fan; If the high-speed ventilation fan malfunctions, the operating status relay will be turned off, a fault alarm will be triggered, and the low-speed ventilation fan will be turned on before proceeding to the next step. If the high-speed ventilation fan is working normally, proceed directly to the next step, which is to turn on the condenser fan relay and check the condenser fan's operating status. If the condenser fan malfunctions, the operating status relay will be turned off and a fault alarm will be triggered; otherwise, proceed to the next step, which is to turn on the compressor 1 and compressor 2 relays and check the operating status of compressor 1 and compressor 2. If compressor 1 malfunctions, the operating status relay will be shut down and a fault alarm will be triggered; otherwise, a cyclic detection will be initiated.

[0063] If compressor 2 malfunctions, the operating status relay will be shut down and a fault alarm will be triggered; otherwise, a cyclic detection will be initiated.

[0064] In semi-cooling mode, activate the high-speed ventilation fan relay to check the operating status of the high-speed ventilation fan: If the high-speed ventilation fan malfunctions, the operating status relay will be turned off, a fault alarm will be triggered, and the low-speed ventilation fan will be turned on before proceeding to the next step. If the high-speed ventilation fan is working normally, proceed directly to the next step, which is to turn on the condenser fan relay and check the condenser fan's operating status. If the condenser fan malfunctions, the operating status relay will be turned off and a fault alarm will be triggered; otherwise, proceed to the next step, which is to turn on the compressor 1 relay or compressor 2 relay to check the operating status of compressor 1 or compressor 2: If compressor 1 or compressor 2 malfunctions, the operating status relay will be turned off and a fault alarm will be triggered; the compressor relay of compressor 2 or compressor 1 will be turned on and a cyclic detection will begin.

[0065] Step S34: In addition to the heating and cooling modes mentioned above, the bus air conditioning also includes a low ventilation mode and a high ventilation mode. Continue referring to... Figure 2 As shown, in the weak ventilation mode, the low-speed ventilation fan relay is turned on to detect the working status of the low-speed ventilation fan: if the low-speed ventilation fan malfunctions, the running status relay is turned off, a fault alarm is triggered, and the high-speed ventilation fan is turned on; if the low-speed ventilation fan is normal, the cycle detection is directly entered.

[0066] In strong ventilation mode, the high-speed ventilation fan relay is activated to check the working status of the high-speed ventilation fan: if the high-speed ventilation fan malfunctions, the running status relay is deactivated, a fault alarm is triggered, and the low-speed ventilation fan is activated; if the high-speed ventilation fan is normal, the cycle detection is directly initiated.

[0067] The bus air conditioning control method provided in this embodiment can adjust the temperature according to the feedback from the bus temperature sensor to ensure a suitable temperature inside the carriage. It also features temperature sensor anomaly diagnosis and dynamic temperature control functions, facilitates vehicle model adaptation, and has an emergency control mechanism.

[0068] Example 3, Reference Figure 3 As shown, an electronic device 200 is provided, comprising: Processor 210, and memory 220 and transceiver 230 communicatively connected to said processor; The memory 220 stores computer-executed instructions; the transceiver 230 is used for sending and receiving data. The processor 210 executes the computer execution instructions stored in the memory 220 to implement the control method in Embodiment 2.

[0069] It should be understood that the electronic device 200 can be used to perform the corresponding steps and / or processes in the above method embodiments. Optionally, the memory 220 may include read-only memory and random access memory, and provide instructions and data to the processor. A portion of the memory 220 may also include non-volatile random access memory. For example, the memory 220 may also store device type information. The processor 210 can be used to execute instructions stored in the memory 220, and when the processor 210 executes the instructions, the processor 210 can perform the corresponding steps and / or processes in the above method embodiments.

[0070] It should be understood that, in the embodiments of this application, the processor 210 may be a central processing unit (CPU), or it may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc.

[0071] In implementation, each step of the above method can be completed by the integrated logic circuitry of the hardware in the processor 210 or by instructions in software form. The steps of the method disclosed in the embodiments of this application can be directly embodied in the execution by the hardware processor, or by a combination of hardware and software modules in the processor 210. The software modules can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory, and the processor executes the instructions in the memory, combining them with its hardware to complete the steps of the above method. To avoid repetition, detailed descriptions are not provided here.

[0072] Example 4: In this example, a computer-readable storage medium is provided, which stores computer-executable instructions. When executed by a processor, the computer-executable instructions are used to implement the control method in Example 2.

[0073] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0074] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0075] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0076] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0077] The technical solution of the present invention has the following technical effects compared with the prior art: This invention, through the coordination of a temperature acquisition module and a core control module, enables the diagnosis and disabling of malfunctioning temperature sensors, allowing the air conditioning controller to function normally. Simultaneously, by incorporating an emergency control module, it ensures that the air conditioning can be activated even if the core control module fails, maintaining a comfortable temperature inside the bus. The bus air conditioning control method and device of this invention achieve precise and comfortable temperature control in the bus compartment, enhanced emergency response capabilities, and low maintenance costs.

[0078] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0079] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A control device for an air conditioner for a passenger vehicle, characterized by comprising: The passenger car air conditioner control device comprises: a temperature acquisition module for acquiring real-time temperature data in a car compartment, a core control module connected with the temperature acquisition module for outputting a control instruction according to the real-time temperature data, a peripheral relay module connected with the core control module through a signal output module, the peripheral relay module realizing start-stop control according to the control instruction, the peripheral relay module comprising a running indication relay, a heating module relay, a ventilation module relay and a refrigeration module relay, an emergency control module comprising a manual switch of an air conditioner refrigeration device, the emergency control module being connected with the refrigeration module relay, when the core control module fails to start the refrigeration module relay due to a fault, the emergency control module starts the refrigeration module relay through the manual switch.

2. A control for a passenger vehicle air conditioner as defined in claim 1 wherein, When the emergency control module is in a starting state, a running power supply of the core control module is in a disconnected state; the manual switch comprising a condenser fan control switch and a compressor control switch, the condenser fan control switch and the compressor control switch being interlocked, when the condenser fan control switch and the compressor control switch are simultaneously in an open state, a compressor is in a starting state.

3. A control for a passenger vehicle air conditioner as defined in claim 1 wherein, The temperature acquisition module comprises a fresh air temperature sensor, a supply air temperature sensor, a return air temperature sensor, a compartment temperature sensor and a crew room temperature sensor, when the core control module detects that data of a certain temperature sensor is abnormal, it is determined that the corresponding temperature sensor is invalid, and then the real-time temperature data collected by the temperature sensor is excluded from temperature weighted fusion operation.

4. A control for a passenger vehicle air conditioner as defined in claim 3 wherein, When the core control module judges that data collected by the fresh air sensor is abnormal, the fresh air sensor is invalid, the core control module outputs a control instruction for disconnecting the running indication relay and a control instruction for starting a fault indication lamp.

5. A control for an air conditioner of a passenger vehicle as defined in claim 1, wherein The core control module comprises a main control unit and an FPGA unit, the FPGA unit is used for uploading the real-time temperature data to the main control unit after data conversion, the main control unit is used for generating a control instruction after judging and calculating the uploaded data, and the control instruction is fed back to the FPGA unit, and the FPGA unit is used for outputting the control instruction to the peripheral relay module.

6. A control for a passenger vehicle air conditioner as defined in claim 1 wherein, The control method of the passenger car air conditioner control device comprises the following steps: after power-on, performing fault self-checking, if there is no fault, turning on a running indication relay; acquiring temperature data in a car compartment, and selecting an operation mode of an air conditioner according to the temperature data; after the air conditioner is operated, real-time monitoring of a working state of a fan, when it is detected that a high-speed ventilation fan or a low-speed ventilation fan which has been turned on is faulty, the corresponding running indication relay is turned off and the low-speed ventilation fan or the high-speed ventilation fan is turned on; in a refrigeration mode, real-time monitoring of working states of a condenser and a compressor, when a fault occurs, turning off a running indication relay and performing fault alarm; in a heating mode, real-time monitoring of a working state of an auxiliary heater, when a fault occurs, turning off a running indication relay and performing fault alarm.

7. A control for a passenger vehicle air conditioner as defined in claim 1 wherein, The passenger car air conditioner control method further comprises: during air conditioner operation, collecting temperature in real time, dynamically updating temperature trend, and switching to a corresponding operation mode when the calculated temperature crosses a temperature threshold value in the current operation mode.

8. A control for a passenger vehicle air conditioner as defined in claim 1 wherein, The passenger car air conditioner control method further comprises: before air conditioner operation, selecting a corresponding car type by manually dialing a selection switch, and the car type includes a seat / sleeper car and a dining car.

9. An electronic device, comprising: Comprise: A processor, a memory and a transceiver connected in communication with the processor; The memory stores computer execution instructions; the transceiver is used for transmitting and receiving data; The processor executes the computer execution instructions stored in the memory to realize the passenger car air conditioner control method according to any one of claims 6-8.

10. A computer readable storage medium, characterized in that, The computer readable storage medium stores computer execution instructions, and the computer execution instructions are executed by a processor to realize the passenger car air conditioner control method according to any one of claims 6-8.

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