Passenger car air conditioning electrical inspection system

Abstract

The utility model discloses a kind of passenger car air conditioner electrical detection systems. The system includes: host computer, air conditioner controller and passenger car air conditioner;Air conditioner controller and passenger car air conditioner are electrically connected;Air conditioner controller is used to control passenger car air conditioner according to control signal;Write-in module includes configuration data input end and first write-in signal output end;Configuration data input end is configured to receive or prestore configuration data containing preset control parameter;First write-in signal output end is electrically connected with air conditioner controller;First write-in signal output end is configured to output first write-in signal according to configuration data, so that air conditioner controller is configured control signal.The utility model embodiment solves the preset parameter adjustment difficulty of existing electrical detection system, difficult to adapt to a variety of different passenger car air conditioner problem, realizes the flexible configuration of control parameter.

Description

Technical Field

[0001] This utility model relates to the field of motor vehicle cooling module technology, and in particular to a passenger vehicle air conditioning electrical detection system. Background Technology

[0002] In the factory testing of passenger vehicle air conditioning controllers, control parameter configuration and function verification must be completed through an electrical testing system to ensure accurate control of the passenger vehicle air conditioning.

[0003] However, existing electrical detection systems generally rely on hardware signal logic. When faced with the differentiated control requirements of different passenger car air conditioners, if the preset control parameters need to be adjusted, it is necessary to redesign the host computer hardware circuit, which is difficult to adapt to various passenger car air conditioners. Utility Model Content

[0004] This utility model provides a passenger vehicle air conditioning electrical testing system to solve the problem that existing electrical testing systems are difficult to adjust preset parameters and cannot be adapted to various passenger vehicle air conditioning systems.

[0005] In a first aspect, this utility model embodiment provides a passenger vehicle air conditioning electrical inspection system, which includes: a host computer, an air conditioning controller, and a passenger vehicle air conditioner;

[0006] The air conditioning controller is electrically connected to the passenger vehicle's air conditioning system; the air conditioning controller is used to regulate the passenger vehicle's air conditioning system according to the control signal.

[0007] The host computer includes a writing module;

[0008] The write module includes a configuration data input terminal and a first write signal output terminal;

[0009] The configuration data input terminal is configured to receive or pre-store configuration data containing preset control parameters;

[0010] The first write signal output terminal is electrically connected to the air conditioner controller; the first write signal output terminal is configured to output a first write signal according to the configuration data, so as to configure the control signal for the air conditioner controller.

[0011] Optionally, the host computer may also include a first detection module;

[0012] The first detection module includes a first test signal output terminal, a first feedback signal receiving terminal, and a first comparison unit;

[0013] The first test signal output terminal is electrically connected to the air conditioner controller; the first test signal output terminal is configured to output a first test signal to the air conditioner controller according to preset control parameters.

[0014] The first feedback signal receiving end is electrically connected to the air conditioner controller; the first feedback signal receiving end is configured to receive the first feedback signal fed back by the air conditioner controller.

[0015] The first comparison unit is electrically connected to the first feedback signal receiver; the first comparison unit is configured to:

[0016] When the first feedback signal received at the first feedback signal receiving end exceeds the preset feedback threshold range, the air conditioner controller is marked as faulty.

[0017] Optionally, the host computer may also include a second detection module;

[0018] The second detection module includes a second test signal output terminal, a second feedback signal receiving terminal, and a second comparison unit;

[0019] The second test signal output terminal is electrically connected to the air conditioner controller; the second test signal output terminal is configured to output a second test signal to the air conditioner controller.

[0020] The second feedback signal receiver is electrically connected to the air conditioner controller.

[0021] The second feedback signal receiver is configured to continuously receive the second feedback signal from the air conditioning controller.

[0022] The second comparison unit is electrically connected to the second feedback signal receiving end;

[0023] The second comparison unit is configured as follows:

[0024] When the duration of the second feedback signal remaining unchanged reaches a preset waiting time, the value of the second test signal corresponding to the moment when the second feedback signal stops changing is obtained, and the value of the second test signal is marked as the limit signal.

[0025] The second test signal is a test signal in which voltage or current continuously increases, and the limit signal is the critical operating parameter of the passenger car air conditioner.

[0026] Optionally, the host computer may also include a data adjustment module;

[0027] The data adjustment module is electrically connected to the first write signal output terminal and the second comparison unit, respectively.

[0028] The data adjustment module is configured as follows:

[0029] Based on the limit signal, the preset control parameters are linearly mapped to generate configuration data of the adjusted control parameters;

[0030] The first write signal output terminal is also configured as follows:

[0031] Based on the adjusted control parameter configuration data, a third write signal is output to configure the control signal for the air conditioner controller.

[0032] Optionally, the host computer can communicate with the air conditioner controller via a USBCAN bus analyzer.

[0033] Optionally, the air conditioning controller is connected to the passenger vehicle's air conditioning system via the air conditioning unit wiring harness.

[0034] Optionally, the passenger vehicle air conditioning system includes a blower, a speed control module, and a mode motor.

[0035] Optionally, the air conditioner controller includes a speed control pin, which is electrically connected to the speed control module, and the output voltage range of the speed control pin is 0 to 12V.

[0036] Optionally, the air conditioning controller includes a blower control pin, which is electrically connected to the blower, and the output voltage accuracy of the control pin is ±0.3V.

[0037] Optionally, the air conditioner controller includes an angle control pin, which is electrically connected to the mode motor, and the mode motor control accuracy is ±0.06V.

[0038] This invention provides a passenger vehicle air conditioning electrical testing system. It allows for flexible input and configuration of preset control parameters through a visual interface on a host computer, and configures the control commands of the air conditioning controller via a writing module. The air conditioning controller then controls the passenger vehicle air conditioning based on the control signals. This solves the problems of existing electrical testing systems, such as difficulty in adjusting preset parameters and inability to adapt to various passenger vehicle air conditioning systems. Attached Figure Description

[0039] Figure 1 A schematic diagram of the structure of a passenger vehicle air conditioning electrical inspection system provided in this embodiment of the present utility model;

[0040] Figure 2 A schematic diagram of a visual operation interface for a host computer provided in an embodiment of this utility model;

[0041] Figure 3 A schematic diagram of the structure of an air conditioner controller provided for an embodiment of this utility model;

[0042] Figure 4 This is a schematic diagram of the circuit structure of an air conditioner controller provided in an embodiment of the present utility model. Detailed Implementation

[0043] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0044] Figure 1 This is a schematic diagram of the structure of a passenger vehicle air conditioning electrical inspection system provided in an embodiment of the present invention. Figure 2 This is a schematic diagram of a visual operation interface for a host computer provided in an embodiment of the present utility model. Figure 3 This is a structural schematic diagram of an air conditioner controller provided as an embodiment of the present utility model. Figure 1 and Figure 3 As shown in the figure, an embodiment of the present invention provides a passenger vehicle air conditioning electrical inspection system, including: a host computer 100, an air conditioning controller 200, and a passenger vehicle air conditioner 300;

[0045] The air conditioning controller 200 is electrically connected to the passenger vehicle air conditioner 300; the air conditioning controller 200 is used to control the passenger vehicle air conditioner 300 according to the control signal;

[0046] The host computer 100 includes a write module 110;

[0047] The write module 110 includes a configuration data input terminal 111 and a first write signal output terminal 112;

[0048] Configuration data input terminal 111 is configured to receive or pre-store configuration data containing preset control parameters;

[0049] The first write signal output terminal 112 is electrically connected to the air conditioner controller 200; the first write signal output terminal 112 is configured to output a first write signal according to the configuration data, so as to configure the control signal for the air conditioner controller 200.

[0050] The configuration data, which includes preset control parameters, can be understood as the voltage or current input of different structures in the passenger car air conditioner 300 under specific operating modes.

[0051] Specifically, during the writing process, the operator uses methods such as... Figure 2The host computer (100) is operated through a visual interface. The user inputs the "configuration data" corresponding to the air conditioning function to be tested, such as defrosting, internal circulation, external circulation, and fan speed level 1. Alternatively, the user can select a configuration pre-stored in a database or file. After receiving the configuration data through the data input terminal 111, the writing module (110) converts it into specific communication protocol instructions that the air conditioning controller (200) can recognize and accept, such as CAN-based protocol instructions. The first writing signal is then sent to the air conditioning controller (200) through the first writing signal output terminal 112. The controller (200) generates the corresponding control signal according to the preset control parameters and selects the corresponding controller. Different controllers correspond to different structures in the passenger car air conditioning 300, such as the blower 320, speed control module 310, and mode motor 330.

[0052] This invention provides a passenger vehicle air conditioning electrical testing system. It allows for flexible input and configuration of preset control parameters through a visual interface on a host computer, and configures the control commands of the air conditioning controller via a writing module. The air conditioning controller then controls the passenger vehicle air conditioning based on the control signals. This solves the problems of existing electrical testing systems, such as difficulty in adjusting preset parameters and inability to adapt to various passenger vehicle air conditioning systems.

[0053] In an optional embodiment, the host computer 100 communicates with the air conditioner controller 200 via a USBCAN bus analyzer 400.

[0054] For details, please refer to [link / reference]. Figure 1 The host computer 100 communicates with the air conditioner controller 200 via a USBCAN bus analyzer 400. The USBCAN bus analyzer 400 acts as a data exchange bridge, supporting data parsing and conversion of the CAN bus protocol, enabling bidirectional communication control between the host computer 100 and the air conditioner controller 200, and ensuring reliable transmission of configuration data and control signals.

[0055] In an optional embodiment, the air conditioning controller 200 is connected to the passenger vehicle air conditioning unit 300 via the air conditioning unit wiring harness 500.

[0056] For details, please refer to [link / reference]. Figure 1 The air conditioning controller 200 is connected to the passenger vehicle air conditioner 300 via the air conditioning housing wiring harness 500. The air conditioning housing wiring harness 500 includes multiple sets of independent wires and connectors, which correspond to the transmission channels of power signals, control signals, and feedback signals, respectively, to meet the anti-interference and reliability requirements in the vehicle environment.

[0057] Figure 3 This is a schematic diagram of the structure of an air conditioner controller provided in an embodiment of the present invention. Figure 4 This is a schematic diagram of the circuit structure of an air conditioner controller provided as an embodiment of the present utility model. Figure 3 and Figure 4 As shown, in an optional embodiment, the passenger vehicle air conditioner 300 includes a blower 320, a speed control module 310, and a mode motor 330.

[0058] Correspondingly, the air conditioner controller 200 includes a speed control pin 201, which is electrically connected to the speed control module 310. The output voltage range of the speed control pin 201 is 0 to 12V.

[0059] In addition, the air conditioning controller 200 also includes a blower control pin 202, which is electrically connected to the blower 320, and the output voltage accuracy of the control pin is ±0.3V.

[0060] Specifically, the passenger vehicle air conditioner 300 includes a blower 320, a speed control module 310, and a mode motor 330. The speed control module 310 receives speed control signals to adjust the speed of the blower 320, and the mode motor 330 drives the air conditioning damper to switch airflow modes.

[0061] In terms of control logic implementation, refer to Figure 3 As shown, the physical operating components of the air conditioner controller 200 include an air conditioner speed button, a temperature adjustment knob, and a fan speed adjustment knob, each corresponding to a different control path: When the user presses the air conditioner speed button to trigger a fixed fan speed mode, the air conditioner controller 200 directly outputs a fixed voltage signal (accuracy ±0.3V) corresponding to the speed setting through the blower control pin 202, driving the blower 320 to run at a preset speed; while when the user performs stepless speed adjustment through the fan speed knob, the air conditioner controller 200 outputs a 0-12V continuously adjustable voltage signal to the speed control module 310 through the speed control pin 201, which is converted by the internal circuit of the speed control module 310 to achieve linear adjustment of the blower 320 speed.

[0062] Continue to refer to Figure 3 and Figure 4 In an optional embodiment, the air conditioning controller 200 includes an angle control pin 203, which is electrically connected to a mode motor 330, and the mode motor control accuracy is ±0.06V.

[0063] Specifically, the mode motor 330 is a servo motor with potentiometer feedback, and its output shaft is connected to the air conditioning damper linkage mechanism through a gear set. When the angle control pin 203 outputs a specific voltage signal, the mode motor 330 achieves angle control through a built-in Hall sensor, ensuring that the damper positioning accuracy error is ≤0.1°, and the corresponding voltage control accuracy is ±0.06V.

[0064] In one specific embodiment, the passenger vehicle air conditioner 300 includes, in addition to the blower 320, speed control module 310, and mode motor 330, an internal / external circulation motor, a left temperature motor, and a right temperature motor.

[0065] refer to Figure 4 Correspondingly, the air conditioning controller includes mode motor interface 1, connector AMP1355081-1; right temperature motor interface 2, connector AMP1355081-1; speed control module interface 3, connector THBDJ7042-6,3-21; blower interface 4, connector AMP172130-1; left temperature motor interface 5, connector AMP1355081-1; and internal / external circulation motor interface 6, connector AMP1355081-1.

[0066] Continue to refer to Figure 1 and Figure 2 In an optional embodiment, the host computer 100 further includes a first detection module 120;

[0067] The first detection module 120 includes a first test signal output terminal 121, a first feedback signal receiving terminal 122, and a first comparison unit 123;

[0068] The first test signal output terminal 121 is electrically connected to the air conditioner controller 200; the first test signal output terminal 121 is configured to output a first test signal to the air conditioner controller 200 according to preset control parameters.

[0069] The first feedback signal receiving terminal 122 is electrically connected to the air conditioner controller 200; the first feedback signal receiving terminal 122 is configured to receive the first feedback signal fed back by the air conditioner controller 200.

[0070] The first comparison unit 123 is electrically connected to the first feedback signal receiver 122; the first comparison unit 123 is configured to:

[0071] When the first feedback signal received by the first feedback signal receiver 122 exceeds the preset feedback threshold range, the air conditioner controller 200 is marked as faulty.

[0072] The first test signal can be understood as an instruction signal generated by the host computer based on the preset function parameters in the interface. For example, the AD value (0~1024) corresponds to functions such as face blowing, foot blowing, and internal and external circulation, and the voltage value (0~25.5V) corresponds to functions such as air volume 1 and air volume 2.

[0073] Specifically, during operation, the first detection module 120 of the host computer 100 sends a first test signal to the air conditioner controller 200 through the first test signal output terminal 121 according to the preset control parameters; after the air conditioner controller 200 executes the instruction, it sends the status feedback signal back to the host computer through the first feedback signal receiving terminal 122; the first comparison unit 123 performs threshold verification, response time verification and logic consistency verification on the feedback signal. Once the feedback signal is detected to exceed the preset threshold range or to have a logic error, the corresponding fault is marked.

[0074] In an optional embodiment, the host computer 100 further includes a second detection module 130;

[0075] The second detection module 130 includes a second test signal output terminal 131, a second feedback signal receiving terminal 132, and a second comparison unit 133;

[0076] The second test signal output terminal 131 is electrically connected to the air conditioner controller 200; the second test signal output terminal 132 is configured to output the second test signal to the air conditioner controller 200.

[0077] The second feedback signal receiver 132 is electrically connected to the air conditioner controller 200;

[0078] The second feedback signal receiver 132 is configured to continuously receive the second feedback signal from the air conditioning controller 200.

[0079] The second comparison unit 133 is electrically connected to the second feedback signal receiving terminal 123;

[0080] The second comparison unit 133 is configured as follows:

[0081] When the duration of the second feedback signal remaining unchanged reaches a preset waiting time, the value of the second test signal corresponding to the moment when the second feedback signal stops changing is obtained, and the value of the second test signal is marked as the limit signal.

[0082] The second test signal is a test signal where voltage or current continuously increases, and the limit signal is the critical operating parameter of the passenger car air conditioner 300. The second feedback signal can be understood as a state feedback signal used to provide feedback on the current operating state of the passenger car air conditioner 300. For example, when the second test signal is a test signal where voltage or current continuously increases, the second feedback signal can be a state feedback signal where the voltage is constant and the current changes, or the current is constant and the voltage changes.

[0083] Specifically, during operation, the second detection module 130 of the host computer 100 outputs a continuously increasing test signal (e.g., starting from 0V and increasing at a rate of 0.1V / second) to the air conditioning controller 200 through the second test signal output terminal 131; simultaneously, the second feedback signal receiving terminal 132 continuously receives the second feedback signal from the air conditioning controller 200. When the second comparison unit 133 detects that the feedback signal has not changed for 10 consecutive seconds, it marks the second test signal value corresponding to the moment of cessation of change as a "limit signal," which corresponds to the critical operating parameters of the passenger vehicle air conditioning 300, such as the maximum wind speed voltage threshold.

[0084] In an optional embodiment, the host computer 100 further includes a data adjustment module 140;

[0085] The data adjustment module 140 is electrically connected to the first write signal output terminal 112 and the second comparison unit 133, respectively.

[0086] Data adjustment module 140 is configured as follows:

[0087] Based on the limit signal, the preset control parameters are linearly mapped to generate configuration data of the adjusted control parameters;

[0088] The first write signal output terminal 112 is also configured as follows:

[0089] Based on the adjusted control parameter configuration data, a third write signal is output to configure the control signal for the air conditioner controller 200.

[0090] The third write signal can be understood as the configuration data of the control parameters after linear mapping.

[0091] Specifically, since different air conditioning controllers 200 or passenger car air conditioners 300 may have different critical control parameters, during operation, when the second comparison unit 133 captures the limit signal through feedback stagnation, the data adjustment module 140 reads the limit signal and then performs linear mapping calculation with the original range of the preset control parameters to generate the adjusted control parameters.

[0092] After generating the adjusted control parameters, the first write signal output terminal 112 outputs the third write signal based on these adjusted parameters, updates the control instructions of the air conditioning controller 200, and realizes the dynamic calibration of the control strategy.

[0093] For example, in the preset control logic, the control parameters for airflow levels 1 to 8 are 1-8V, with level 8 being the maximum level. The voltage corresponding to the ultimate airflow signal is 12V. Therefore, after linear mapping, the control parameters for airflow levels 1 to 8 change to 1-12V, such as level 8 changing from 8V to 12V.

[0094] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, combinations, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A passenger vehicle air conditioning electrical inspection system, characterized in that, include: Host computer, air conditioning controller and passenger vehicle air conditioning; The air conditioning controller is electrically connected to the passenger vehicle air conditioning system; The air conditioning controller is used to regulate the air conditioning of the passenger vehicle according to the control signal; The host computer includes a writing module; The writing module includes a configuration data input terminal and a first write signal output terminal; The configuration data input terminal is configured to receive or pre-store configuration data containing preset control parameters; The first write signal output terminal is electrically connected to the air conditioner controller; The first write signal output terminal is configured to output a first write signal according to the configuration data, so as to configure the control signal for the air conditioner controller.

2. The passenger vehicle air conditioning electrical testing system according to claim 1, characterized in that, The host computer also includes a first detection module; The first detection module includes a first test signal output terminal, a first feedback signal receiving terminal, and a first comparison unit; The first test signal output terminal is electrically connected to the air conditioner controller; the first test signal output terminal is configured to output a first test signal to the air conditioner controller according to the preset control parameters. The first feedback signal receiving end is electrically connected to the air conditioner controller; the first feedback signal receiving end is configured to receive the first feedback signal fed back by the air conditioner controller. The first comparison unit is electrically connected to the first feedback signal receiving terminal; the first comparison unit is configured to: When the first feedback signal received by the first feedback signal receiving terminal exceeds the preset feedback threshold range, the air conditioner controller is marked as faulty.

3. The passenger vehicle air conditioning electrical testing system according to claim 1, characterized in that, The host computer also includes a second detection module; The second detection module includes a second test signal output terminal, a second feedback signal receiving terminal, and a second comparison unit; The second test signal output terminal is electrically connected to the air conditioner controller; the second test signal output terminal is configured to output a second test signal to the air conditioner controller; The second feedback signal receiving end is electrically connected to the air conditioner controller; The second feedback signal receiver is configured to continuously receive the second feedback signal from the air conditioner controller; The second comparison unit is electrically connected to the second feedback signal receiving terminal; The second comparison unit is configured as follows: When the duration of the second feedback signal remaining unchanged reaches a preset waiting time, the second test signal value corresponding to the moment when the second feedback signal stops changing is obtained, and the second test signal value is marked as a limit signal. The second test signal is a test signal in which voltage or current continuously increases, and the limit signal is the critical operating parameter of the passenger vehicle air conditioner.

4. The passenger vehicle air conditioning electrical testing system according to claim 3, characterized in that, The host computer also includes a data adjustment module; The data adjustment module is electrically connected to the first write signal output terminal and the second comparison unit, respectively. The data adjustment module is configured as follows: The preset control parameters are linearly mapped based on the limit signal to generate configuration data for the adjusted control parameters; The first write signal output terminal is also configured as follows: Based on the configuration data of the adjusted control parameters, a third write signal is output to configure the control signal for the air conditioner controller.

5. The passenger vehicle air conditioning electrical testing system according to claim 1, characterized in that, The host computer communicates with the air conditioner controller via a USBCAN bus analyzer.

6. The passenger vehicle air conditioning electrical testing system according to claim 1, characterized in that, The air conditioning controller is connected to the passenger vehicle's air conditioning unit via the air conditioning unit wiring harness.

7. The passenger vehicle air conditioning electrical testing system according to claim 1, characterized in that, The passenger vehicle air conditioner includes a blower, a speed control module, and a mode motor.

8. The passenger vehicle air conditioning electrical testing system according to claim 7, characterized in that, The air conditioner controller includes a speed control pin, which is electrically connected to the speed control module. The output voltage range of the speed control pin is 0~12V.

9. The passenger vehicle air conditioning electrical testing system according to claim 7, characterized in that, The air conditioning controller includes a blower control pin, which is electrically connected to the blower, and the output voltage accuracy of the control pin is ±0.3V.

10. The passenger vehicle air conditioning electrical testing system according to claim 7, characterized in that, The air conditioner controller includes an angle control pin, which is electrically connected to the mode motor. The mode motor has a control accuracy of ±0.06V.

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