Method for controlling refrigerator by vehicle machine based on can communication data interaction

Abstract

The invention belongs to the technical field of vehicle-mounted refrigerator data interaction, and particularly relates to a method for controlling a refrigerator by a vehicle machine based on can communication data interaction. The vehicle-mounted refrigerator is connected with the vehicle machine through a CAN bus, and data interaction is carried out through can communication. A user performs on / off operation at the vehicle-mounted terminal; the vehicle machine sends instruction data of user operation through can communication; the refrigerator receives the can data of the in-vehicle infotainment terminal; the refrigerator main control unit analyzes the received can data and executes a corresponding instruction; if the current refrigerator is in the shutdown state, starting up; if the current refrigerator is in the starting state, the refrigerator is shut down; the integrated vehicle-mounted refrigerator is regulated and controlled by matching the vehicle trip computer with the CAN bus, and the vehicle-mounted refrigerator integrates a refrigerating mode and a heating mode, so that the requirements in different environments are met. According to the implementation method of the CAN communication software, the data is stable and reliable through the CAN bus system, and the stability of the vehicle body electric control system is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicle refrigerator data interaction, and in particular relates to a method for realizing vehicle computer control of a refrigerator based on CAN communication data interaction. Background Art

[0002] Existing car refrigerators are all based on the expansion of traditional cars, have their own independent control systems, and cannot interact with the car's central control; there are some disadvantages such as inconvenient operation and low applicability; therefore, a method for realizing vehicle-to-refrigerator control based on CAN communication data interaction is provided. Summary of the invention

[0003] To solve the defects and deficiencies of the prior art, the purpose of the present invention is to provide a method for realizing vehicle-mounted refrigerator control based on CAN communication data interaction; this method saves wiring harnesses compared to traditional wiring methods, optimizes the wiring method of the vehicle body, and reduces costs. Through the CAN bus system data control as a whole, the stability of the vehicle body electronic control system is improved, and the control is more intelligent and precise.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: the vehicle refrigerator is connected to the vehicle computer through the CAN bus, and data is exchanged through CAN communication, so as to realize the control of the refrigerator by the vehicle computer and the reporting of refrigerator data; for the control of the local functions of the refrigerator and the control output of each load, when the refrigerator end receives the corresponding control signal (working mode, set temperature, power on and off, etc.) sent by the vehicle computer end through CAN communication, the refrigerator will control the corresponding load control output through its own operating logic.

[0005] Car computer realizes refrigerator refrigeration control: The user adjusts the refrigeration target temperature on the vehicle computer → the vehicle computer sends the target temperature data through CAN communication - the refrigerator receives the CAN data from the vehicle computer → the refrigerator main control unit analyzes the received CAN data to make refrigeration start and stop judgments → if the current temperature in the refrigerator is ≥ the received target temperature by 2°C (this value can be set to 1~5°C according to actual conditions), the compressor and fan are turned on for cooling; if the current temperature in the refrigerator is ≤ the received target temperature, the refrigeration is stopped and the compressor and fan are turned off.

[0006] Car computer realizes refrigerator heating control: The user adjusts the heating target temperature on the vehicle computer → the vehicle computer sends the target temperature data through CAN communication → the refrigerator receives the CAN data from the vehicle computer → the refrigerator main control unit analyzes the received CAN data to make heating on / off judgments → if the current temperature in the refrigerator is ≤2°C of the received target temperature (this value can be set to 1~5°C according to actual conditions), turn on the heating wire for heating; if the current temperature in the refrigerator is ≥the received target temperature, stop heating and turn off the heating wire.

[0007] Car computer realizes refrigerator on / off: The user performs the on / off operation on the vehicle computer → the vehicle computer sends the user's operation command data through CAN communication → the refrigerator receives the CAN data from the vehicle computer → the refrigerator main control unit analyzes the received CAN data and executes the corresponding command → if the refrigerator is currently off, it turns on; if the refrigerator is currently on, it turns off.

[0008] The car side can send data through CAN communication to control the refrigerator and control the refrigerator's cooling, heating, interior lights and other functions; the refrigerator side can send data such as the refrigerator's real-time temperature, set temperature, working status and other data to the car side through CAN communication.

[0009] The present invention has the following beneficial effects: 1. It controls the integrated car refrigerator through the car's on-board computer and the CAN bus, and the car refrigerator integrates both cooling and heating modes to meet the needs in different environments.

[0010] 2. The implementation method of the CAN communication software makes the CAN bus system data stable and reliable, improves the stability of the vehicle body electronic control system, and is more intelligent and precise in control. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention is described in detail through the following specific implementations and drawings.

[0012] Figure 1 This is a flow chart of Embodiment 1 of the present invention; Figure 2 This is a flow chart of Embodiment 2 of the present invention; Figure 3 This is a flowchart of Embodiment 3 of the present invention; Figure 4 This is a schematic diagram of the first embodiment of the present invention; Figure 5 This is a schematic diagram of the second embodiment of the present invention; Figure 6 This is a schematic diagram of the third embodiment of the present invention; Figure 7 This is a circuit diagram of Embodiment 1 of the present invention; Figure 8 This is a circuit diagram of Embodiment 2 of the present invention. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is described below by the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0014] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the solutions according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0015] See Figure 1-Figure 8 As shown, this specific implementation adopts the following technical solution: the vehicle refrigerator is connected to the vehicle computer through the CAN bus, and data is exchanged through CAN communication, so that the vehicle computer controls the refrigerator and reports the refrigerator data; Regarding the control of the local functions of the refrigerator and the control output of each load, when the refrigerator receives the corresponding control signal (working mode, set temperature, power on and off instructions, etc.) sent by the vehicle end through CAN communication, the refrigerator will control the corresponding load control output through its own operating logic.

[0016] See also Figure 1 , Figure 4 , Figure 7 ; Example 1: Car computer realizes refrigerator refrigeration control: ①The user adjusts the cooling target temperature on the vehicle computer →②The vehicle computer sends the target temperature data through CAN communication →③The refrigerator receives the CAN data from the vehicle computer →④The refrigerator main control unit analyzes the received CAN data to make a refrigeration start and stop judgment →⑤If the current temperature in the refrigerator is ≥2℃ of the received target temperature (this value can be set to 1~5℃ according to the actual situation), turn on the compressor and fan for cooling; if the current temperature in the refrigerator is ≤the received target temperature, stop cooling and turn off the compressor and fan.

[0017] The working principle of this embodiment is as follows: the control board chip on the refrigerator outputs a high level to the ioCOMP port to turn on the Q2 transistor across the R5 and R6 resistors, and the compressor starts working.

[0018] See also Figure 2 , Figure 5 , Figure 8 ; Example 2: Car machine realizes refrigerator heating control: ①The user adjusts the heating target temperature on the vehicle computer →②The vehicle computer sends the target temperature data through CAN communication →③The refrigerator receives the CAN data from the vehicle computer →④The refrigerator main control unit analyzes the received CAN data to make heating start and stop judgments →⑤If the current temperature in the refrigerator is ≤2℃ of the received target temperature (this value can be set to 1~5℃ according to actual conditions), turn on the heating wire for heating; if the current temperature in the refrigerator is ≥the received target temperature, stop heating and turn off the heating wire.

[0019] The working principle of this embodiment is as follows: the control board chip on the refrigerator outputs a high level to the ioHeat port to make the MOS tube Q6 conduct the heating wire loop, and the heating wire works.

[0020] See also Figure 3 , Figure 6 ; Example 3: Car machine realizes refrigerator on / off: ①The user performs the on / off operation on the vehicle computer → ②) The vehicle computer sends the user's operation command data through CAN communication → ③The refrigerator receives the CAN data from the vehicle computer → ④The refrigerator main control unit analyzes the received CAN data and executes the corresponding command → ⑤If the refrigerator is currently in the off state, it turns on; if the refrigerator is currently in the on state, it turns off.

[0021] Working principle: The user performs the on / off operation on the car computer. If the refrigerator is currently on, it will be turned off; if the refrigerator is currently off, it will be turned on.

[0022] The method of realizing vehicle-to-refrigerator control based on CAN communication data interaction of the present invention, the vehicle-to-machine end sends CAN communication data to control the refrigerator, and controls the refrigerator's cooling, heating, interior light and other functions; the refrigerator end can send data via CAN communication to transmit the refrigerator's real-time temperature, set temperature, working status and other data to the vehicle-to-machine end.

[0023] The present invention regulates the integrated vehicle refrigerator through the vehicle driving computer and the CAN bus, and the vehicle refrigerator integrates two modes of cooling and heating to meet the needs in different environments. The implementation method of the CAN communication software improves the stability of the vehicle body electronic control system through the CAN bus system data stability and reliability, and is more intelligent and accurate in control. The present invention optimizes the wiring method of the vehicle body, reduces costs, and improves the comfort of users.

[0024] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A method for realizing vehicle computer control of refrigerator based on CAN communication data interaction, characterized in that: The car refrigerator is connected to the vehicle computer via the CAN bus and data is exchanged through CAN communication.

2. The method for realizing vehicle computer control of refrigerator based on CAN communication data interaction according to claim 1 is characterized in that: Car computer realizes refrigerator refrigeration control method: The user adjusts the refrigeration target temperature on the vehicle computer → the vehicle computer sends the target temperature data through CAN communication - the refrigerator receives the CAN data from the vehicle computer → the refrigerator main control unit analyzes the received CAN data to make refrigeration start and stop judgments → if the current temperature in the refrigerator is ≥ the received target temperature by 2°C (this value can be set to 1~5°C according to actual conditions), the compressor and fan are turned on for cooling; if the current temperature in the refrigerator is ≤ the received target temperature, the refrigeration is stopped and the compressor and fan are turned off.

3. The method for realizing vehicle computer control of refrigerator based on CAN communication data interaction according to claim 1 is characterized in that: Car computer realizes refrigerator heating control method: The user adjusts the heating target temperature on the vehicle computer → the vehicle computer sends the target temperature data through CAN communication → the refrigerator receives the CAN data from the vehicle computer → the refrigerator main control unit analyzes the received CAN data to make heating on / off judgments → if the current temperature in the refrigerator is ≤2°C of the received target temperature (this value can be set to 1~5°C according to actual conditions), turn on the heating wire for heating; if the current temperature in the refrigerator is ≥the received target temperature, stop heating and turn off the heating wire.

4. The method for realizing vehicle computer control of refrigerator based on CAN communication data interaction according to claim 1 is characterized in that: How to turn on / off the refrigerator in the car: The user performs the on / off operation on the vehicle computer → the vehicle computer sends the user's operation command data through CAN communication → the refrigerator receives the CAN data from the vehicle computer → the refrigerator main control unit analyzes the received CAN data and executes the corresponding command → if the refrigerator is currently off, it turns on; if the refrigerator is currently on, it turns off.

5. The method for realizing vehicle computer control of refrigerator based on CAN communication data interaction according to claim 1 is characterized in that: The vehicle side sends data via CAN communication to control the refrigerator and its cooling, heating and interior light functions. The refrigerator side sends data via CAN communication to transmit the refrigerator's real-time temperature, set temperature and working status data to the vehicle side.

6. The method for realizing vehicle computer control of refrigerator based on CAN communication data interaction according to claim 2 is characterized in that: The working principle of the car computer to realize refrigerator refrigeration control: the control board chip on the refrigerator outputs a high level to the ioCOMP port to make the Q2 transistor conduct across the R5 and R6 resistors, and the compressor starts working.

7. The method for realizing vehicle computer control of refrigerator based on CAN communication data interaction according to claim 3 is characterized in that: The working principle of the car computer to realize refrigerator heating control: the control board chip on the refrigerator outputs a high level to the ioHeat port to make the MOS tube Q6 turn on the heating wire circuit, and the heating wire works.

8. The method for realizing vehicle computer control of refrigerator based on CAN communication data interaction according to claim 4 is characterized in that: The working principle of the car computer to realize the on / off operation of the refrigerator: the user performs the on / off operation on the car computer. If the refrigerator is currently on, it will be turned off; if the refrigerator is currently off, it will be turned on.

9. The method for realizing vehicle computer control of refrigerator based on CAN communication data interaction according to claim 1 is characterized in that: Car computer realizes refrigerator refrigeration control method: The user adjusts the refrigeration target temperature on the vehicle computer → the vehicle computer sends the target temperature data through CAN communication - the refrigerator receives the CAN data from the vehicle computer → the refrigerator main control unit analyzes the received CAN data to make a refrigeration start and stop judgment → if the current temperature in the refrigerator is ≥ the received target temperature of 4°C; then turn on the compressor and fan for cooling; if the current temperature in the refrigerator is ≤ the received target temperature, stop the refrigeration and turn off the compressor and fan.

10. The method for realizing vehicle computer control of refrigerator based on CAN communication data interaction according to claim 1, characterized in that: Car computer realizes refrigerator heating control method: The user adjusts the heating target temperature on the vehicle computer → the vehicle computer sends the target temperature data through CAN communication → the refrigerator receives the CAN data from the vehicle computer → the refrigerator main control unit analyzes the received CAN data to make a heating on / off judgment → if the current temperature in the refrigerator is ≤ the received target temperature of 4°C; then turn on the heating wire for heating; if the current temperature in the refrigerator is ≥ the received target temperature, stop heating and turn off the heating wire.

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