CN114706377A - Vehicle-mounted air conditioner testing system - Google Patents
Vehicle-mounted air conditioner testing system Download PDFInfo
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- CN114706377A CN114706377A CN202210638577.XA CN202210638577A CN114706377A CN 114706377 A CN114706377 A CN 114706377A CN 202210638577 A CN202210638577 A CN 202210638577A CN 114706377 A CN114706377 A CN 114706377A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
- G05B23/0256—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults injecting test signals and analyzing monitored process response, e.g. injecting the test signal while interrupting the normal operation of the monitored system; superimposing the test signal onto a control signal during normal operation of the monitored system
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
- G01R31/007—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks using microprocessors or computers
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Abstract
The invention provides a vehicle-mounted air conditioner testing system which is used for testing the vehicle-mounted air conditioner system and comprises an upper computer and a control cabinet which is in communication connection with the upper computer, wherein the upper computer is used for sending a plurality of different simulation test signals to the control cabinet; the control cabinet carries out corresponding performance detection on the vehicle-mounted control system according to a target simulation test signal sent by the upper computer; the control cabinet is internally provided with a communication module, the communication module is used for sending the target simulation test signal to the vehicle-mounted air conditioning system and sending state information fed back by the vehicle-mounted air conditioning system according to the target simulation test signal to the upper computer, and the upper computer analyzes the state information by using the existing script and obtains a corresponding detection result. The technical problems that in the prior art, the vehicle-mounted air conditioner is tested manually, so that the efficiency is low, the time consumption is high, and mistakes are easily made in the testing process are solved.
Description
Technical Field
The invention relates to the technical field of testing, in particular to a vehicle-mounted air conditioner testing system.
Background
Air conditioning systems are an essential component of vehicle comfort systems. The increased comfort requirements of the consumer for the vehicle and the diversification of the product requirements provide a significant challenge to the functionality and reliability of new products. The high-efficiency and convenient control and reasonable operation logic of the automobile air conditioner, and the stable product performance and the special working condition calibration work of the air conditioner are always the key points of the air conditioning system. The testing of the function of the air conditioner controller is a key step for ensuring the quality of an air conditioning system and bringing vehicles to the market, so developers should make reasonable and effective testing schemes and methods according to the characteristics of the air conditioner controller and the condition of the whole vehicle in the initial stage of new product development, and the sufficiency of product function testing and verification is enhanced.
However, the current vehicle-mounted air conditioner is still in a manual testing state, and because the function of the air conditioning system is complex, especially the tests related to the air conditioner state transition are very complicated, so that the testing process is extremely complicated, the efficiency of the vehicle-mounted air conditioner is low, the time consumption is high, and errors are easy to occur in the testing process.
Disclosure of Invention
Based on this, the invention aims to provide a vehicle-mounted air conditioner testing system, which is used for solving the technical problems of low efficiency, much time consumption and easy error in the testing process caused by manually testing a vehicle-mounted air conditioner in the prior art.
The invention provides a vehicle-mounted air conditioner testing system, which is used for testing the vehicle-mounted air conditioner system, and comprises the following components:
the system comprises an upper computer and a control cabinet which is in communication connection with the upper computer, wherein the upper computer is used for sending a plurality of different simulation test signals to the control cabinet, and the control cabinet is used for carrying out corresponding performance detection on the vehicle-mounted control system according to a target simulation test signal sent by the upper computer;
the control cabinet is internally provided with a communication module, the communication module is used for sending the target simulation test signal to the vehicle-mounted air conditioning system and sending state information fed back by the vehicle-mounted air conditioning system according to the target simulation test signal to the upper computer, and the upper computer analyzes the state information by using the existing script and obtains a corresponding detection result.
Above-mentioned vehicle air conditioner test system, through setting up test model, edit and carry out simulation test signal, realize the automated test to vehicle air conditioner system, tester needn't be engaged in repeatedly, tedious test work, liberate the workman from manual test state, only need start simulation test signal on the host computer, the switch board tests vehicle air conditioner system according to the test script is automatic, generate the test result, promote the work efficiency of test greatly, the prior art has been solved, adopt manually to test vehicle air conditioner, lead to inefficiency in the test process, it is consuming time many, and the technical problem who makes mistakes easily.
Further, on-vehicle air conditioner test system, wherein, on-vehicle air conditioner system includes air conditioner controller and electric connection air conditioner controller's peripheral device set, peripheral device set includes air-out mode motor, temperature air door motor, circulation air door motor and air-blower system.
Further, in the vehicle-mounted air conditioner test system, the communication module comprises an IO board card and a CAN communication board card which are connected with the air conditioner controller through an analog line;
the upper computer can output high level or low level to the air conditioner controller through the IO board card so as to simulate signal input of air conditioner physical keys, wherein the air conditioner physical keys comprise a power supply button, an AUTO button, an air volume adding button, an air volume reducing button and a maximum defrosting button;
the CAN communication board is used for sending an analog message signal to the air conditioner controller and collecting state information fed back by the air conditioner controller according to the analog message signal and sending the state information to the upper computer.
Further, on-vehicle air conditioner test system, wherein, still be equipped with power module in the switch board, power module electric connection air conditioner controller is in order to right air conditioner controller with the peripheral device set supplies power, the host computer is steerable power module is right air conditioner controller exports different voltages.
Further, in the vehicle-mounted air conditioner testing system, the IO board card is used for sending resistance signals simulating the in-vehicle temperature sensor, the evaporation temperature sensor and the sunlight sensor to the air conditioner controller through the simulation circuit, and the IO board card can control any in-vehicle temperature, control any evaporator temperature and control any sunlight intensity without being connected to a real sensor, so that the test of the air conditioner controller under various working conditions is simulated.
Further, the vehicle-mounted air conditioner test system is characterized in that a DA converter connected with the air conditioner controller through an analog line is further arranged in the control cabinet, the DA converter is used for sending feedback voltage signals simulating a refrigerant pressure sensor and an anion generator to the air conditioner controller through the analog line, the actual refrigerant pressure sensor and the anion generator do not need to be installed, and any refrigerant pressure and anion feedback voltage can be controlled and output, so that the test of the air conditioner controller under some extreme working conditions can be simulated.
Further, in the vehicle-mounted air conditioner test system, the CAN communication board is used for sending an outside temperature message signal simulating an outside temperature sensor to the air conditioner controller through a simulation circuit, the outside temperature is collected by the vehicle body controller and sent out through a CAN bus, the real vehicle body controller does not need to be installed, the CAN communication board is connected with the CAN line of the air conditioner controller, and after the DBC file of the vehicle body controller is loaded by the control cabinet, the outside temperature message of the vehicle body controller CAN be sent to the air conditioner controller in a simulated mode, so that the function of simulating the outside temperature is achieved.
Further, the vehicle-mounted air conditioner test system is characterized in that an LIN communication board card connected with the air conditioner controller through a simulation line is arranged in the control cabinet, the LIN communication board card is used for sending a PM2.5 value message signal simulating a PM2.5 sensor to the air conditioner controller through the simulation line, the real PM2.5 sensor does not need to be installed, and the effect of controlling the PM2.5 value in the vehicle is achieved.
Further, on-vehicle air conditioner test system, wherein, be equipped with in the switch board with air-out mode motor temperature air door motor the circulation air door motor reaches the AD converter that air-blower system connects, the AD converter is used for gathering air-out mode motor temperature air door motor the circulation air door motor reaches air-blower system's analog quantity voltage signal, and will analog quantity voltage signal converts the digital quantity signal into in the host computer.
Further, in the vehicle-mounted air conditioner testing system, the upper computer analyzes the acquired state information by using a python script, and obtains a corresponding detection result.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a block diagram of a vehicle air conditioner testing system according to the present invention;
FIG. 2 is a block diagram of an air conditioner controller input through an HIL cabinet according to the present invention;
FIG. 3 is a block diagram of the structure of the air conditioner controller output through the HIL cabinet according to the present invention;
the main components in the figure are illustrated by symbols:
10-an upper computer, 20-a control cabinet, 21-a communication module, 211-an IO board card, 212-CAN communication board card, 22-DA converter, 23-LIN communication board card, 24-AD converter, 25-a power supply module, 30-a vehicle air conditioning system, 31-an air conditioner controller and 32-a peripheral device set.
Detailed Description
In order to make the objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," "up," "down," and the like are used for descriptive purposes only and not for purposes of indicating or implying that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 3, the vehicle air conditioner testing system of the present invention is used for testing a vehicle air conditioner system 30, and the vehicle air conditioner testing system includes an upper computer 10 and a control cabinet 20 communicatively connected to the upper computer 10, where the upper computer 10 is used for sending a plurality of different analog test signals to the control cabinet 20; the control cabinet 20 is used for carrying out corresponding performance detection on the vehicle-mounted control system according to a target simulation test signal sent by the upper computer 10;
the control cabinet 20 is internally provided with a communication module 21, the communication module 21 is used for sending the target simulation test signal to the vehicle-mounted air conditioning system 30 and sending the state information fed back by the vehicle-mounted air conditioning system 30 according to the target simulation test signal to the upper computer 10, and the upper computer 10 analyzes the state information by using the existing script and obtains a corresponding detection result.
Specifically, in this embodiment, the upper computer 10 is an HIL upper computer, and the control cabinet 20 is an HIL cabinet, and is based on the HIL, so as to solve the problem that the current vehicle-mounted air conditioner is still in a manual test state, and can automatically perform logic and function tests on a product, which is beneficial to saving a large amount of software logic verification time in the product development process. The saved time is reserved for the calibration of the air conditioning cold and warm working conditions, so that the comfort of the whole vehicle is improved. Meanwhile, the automatic test can win time, cost and quality, and can replace the repetitive manual test.
In practical application, the system can automatically complete the test of the air conditioner controller 31 under the condition of unmanned operation, including air conditioner state transition test, automatic start-stop test, power supply voltage boosting test, compressor protection strategy test, remote air conditioner test, compressor start request test, air outlet mode motor temperature air door motor circulating air door motor test and the like, and automatically generate a test report. The manual testing state of the automobile air conditioner is released for workers, and the testing efficiency is improved.
In this embodiment, the vehicle-mounted air conditioning system 30 includes an air conditioning controller 31 and a peripheral device set 32 electrically connected to the air conditioning controller 31, where the peripheral device set 32 includes an air outlet mode motor, a temperature damper motor, a circulation damper motor, and an air blower system.
Specifically, the communication module 21 includes an IO board 211 and a CAN communication board 212 connected to the air conditioner controller 31 through a line;
the upper computer 10 can output a high level or a low level to the air conditioner controller 31 through the IO board card 211 to simulate signal input of air conditioner physical keys, wherein the air conditioner physical keys comprise a power button, an AUTO button, an air volume adding button, an air volume reducing button and a maximum defrosting button;
it can be understood that in this embodiment, a real button of the vehicle air conditioner controller 31 does not need to be set, and instead, the HIL upper computer outputs a suspension or low level to the air conditioner controller 31 through the IO board 211, so that a button signal of the air conditioner controller 31 is given by the HIL cabinet, and the purpose of automatic control is achieved.
The CAN communication board is used for sending an analog message signal to the air conditioner controller 31, collecting state information fed back by the air conditioner controller 31 according to the analog message signal and sending the state information to the upper computer 10.
It should be explained that the CAN communication board 212 is in communication connection with a CAN line of the air conditioner controller 31, and after the control cabinet 20 loads the DBC file, the upper computer 10 may automatically analyze data in the CAN message, and may read and write data in the CAN message, such as reading status information of an air conditioner, or writing a control signal of the IVI air conditioner controller 31, and provide support for automatic control.
Further, still be equipped with power module 25 in the switch board 20, power module 25 electric connection air conditioner controller 31, it is right to be right air conditioner controller 31 with peripheral device collection 32 supplies power, host computer 10 is steerable power module 25 is right air conditioner controller 31 outputs different voltages, can test the behavior of air conditioner under the abnormal voltage.
Further, the IO board card 211 is configured to send resistance signals simulating an in-vehicle temperature sensor, an evaporation temperature sensor, and a sunlight sensor to the air conditioner controller 31 through a simulation line, and may control any in-vehicle temperature, any evaporator temperature, and any sunlight intensity without being connected to a real sensor, thereby simulating air conditioner controller tests under various working conditions.
It can be understood that, for the detection of the in-vehicle temperature sensor, the in-vehicle temperature is calculated by the air conditioner controller 31 collecting the signal of the indoor temperature sensor, the type of the signal is a resistance signal, a temperature resistance model is established in the simulink modeling system according to the resistance value corresponding thermometer, and different temperature signals are converted into corresponding resistance values. Finally, the HIL cabinet outputs corresponding resistance signals to the air conditioner controller 31 in an analog mode, a real in-vehicle temperature sensor is not needed to be installed, and the purpose of freely controlling the in-vehicle temperature is achieved.
Aiming at the detection of the evaporator temperature sensor, the control principle of the temperature sensor is similar to that of the temperature sensor in the vehicle, the resistance is output to the air conditioner controller 31 through the simulation of the HIL cabinet, a real evaporator temperature sensor is not required to be installed, and the purpose of freely controlling the temperature of the evaporator is achieved.
Aiming at the sunlight sensor, the control principle of the sunlight sensor is similar to that of a temperature sensor in the vehicle, the resistance is output to the air conditioner controller 31 through the HIL cabinet simulation, a real sunlight sensor does not need to be installed, and the purpose of freely controlling the brightness intensity is achieved.
Further, a DA converter 22 connected to the air conditioner controller 31 through an analog line is further disposed in the control cabinet 20, and the DA converter 22 is configured to send a feedback voltage signal of the analog refrigerant pressure sensor and the negative ion generator to the air conditioner controller 31 through the analog line.
For the detection of the refrigerant pressure sensor, the pressure value is obtained by calculating the feedback signal of the refrigerant pressure sensor acquired by the air conditioner controller 31, the signal type is an analog quantity voltage signal, a pressure and voltage model is established in a simulink modeling system according to a refrigerant pressure value table corresponding to the voltage value, different pressures are converted into corresponding voltage values, namely corresponding voltage signals, and the voltage values are in a linear corresponding relation. And finally, the HIL cabinet simulates and outputs a voltage signal to the air conditioner controller 31 without installing a real high-pressure sensor, so that the aim of freely controlling the pressure of the refrigerant is fulfilled.
For the detection of the anion generator, a real anion generator does not need to be installed, in the implementation, a driving line for driving the anion generator by the air conditioner controller 31 is connected to the IO board card 211 for real-time acquisition, and the upper computer 10 can monitor the driving condition of the anion generator in real time; when the air conditioner controller 31 drives the anion generator, the feedback voltage of the anion generator is monitored in real time, the actual working state of the anions is judged (the feedback voltage range is 4-5V in normal working and the feedback voltage is less than 4V in abnormal working), and the feedback analog quantity voltage signal of the anions is output to the air conditioner controller 31 by the HIL cabinet DA converter 22, so that the feedback voltage in normal working and the feedback voltage in abnormal working are simulated.
Further, the CAN communication board 212 is used for sending the temperature message signal outside the vehicle of the simulation temperature sensor outside the vehicle to the air conditioner controller 31 through the simulation circuit, and collects the temperature state information outside the vehicle fed back by the air conditioner controller 31 and finally sends the temperature state information outside the vehicle to the upper computer 10 for analysis and detection.
For the detection of the external temperature sensor, the temperature is a temperature value in a message of an air conditioner controller 31 collecting a vehicle body controller CAN bus BCM 0x313, and a Rolling counter and a Checksum in the message 0x313 are also judged. In this embodiment, a real vehicle body controller does not need to be installed, the HIL cabinet CAN communication board 212 is connected to the CAN line of the air conditioner controller 31, and after the HIL cabinet loads the DBC file edited by the corresponding CAN network, the HIL cabinet CAN simulate and send a BCM _0x313 vehicle external temperature message to the air conditioner controller 31. In the simulink modeling system, the Rollingcounter signal in the 0x313 message may be assigned a value that rolls from 0-F cycles; the exclusive or processing may be performed on the other 7 bytes of the 0x313 message except for Checksum, and the exclusive or processing value is assigned to Checksum. Thus, the 0x313 message is made into a message which can be identified by the air conditioner controller 31, and the written temperature value is also identified as a real temperature value by the air conditioner controller 31, so that the purpose of measuring the temperature outside the vehicle in a simulated manner is realized.
Further, an LIN communication board 23 connected with the air conditioner controller 31 through an analog line is arranged in the control cabinet 20, and the LIN communication board 23 is used for sending a PM2.5 value message signal simulating a PM2.5 sensor to the air conditioner controller 31 through the analog line.
The detection is directed to the PM2.5 sensor, where the PM2.5 value is a LIN bus 0x13 message signal that the air conditioner controller 31 collects the PM2.5 sensor. In this embodiment, a real PM2.5 sensor does not need to be installed, the LIN communication board 23 of the HIL cabinet is connected to the LIN bus of the air conditioner controller 31, and after the HIL cabinet loads the DBC file edited by the corresponding LIN network, a PM2.5 value may be written into the PM2.5_0X13 message, and the written value is recognized as a real PM2.5 value by the air conditioner controller 31, thereby implementing simulation detection of recognition of the PM2.5 value of the air conditioner.
Further, be equipped with in the switch board 20 with air-out mode motor temperature air door motor the circulation air door motor and air-blower system connect's AD converter 24, AD converter 24 is used for gathering in real time air-out mode motor temperature air door motor the circulation air door motor and air-blower system's analog quantity voltage signal, and will analog quantity voltage signal converts the digital quantity signal transmission to in the host computer 10.
Referring to fig. 3 specifically, in this embodiment, M1 represents the air outlet mode motor, the temperature damper motor, and the circulating damper motor, which are all connected to the real object, and the three motors have position feedback information respectively, and the feedback information of the three motors is also connected to the HIL cabinet AD converter 24 while being connected to the air conditioner controller 31 respectively. The feedback information is an analog quantity voltage signal, the HIL cabinet can acquire the voltage signal in real time through the AD converter 24, the voltage signal is converted into a digital quantity signal, and the digital quantity signal can be converted into specific position information of the motor according to a table.
The blower system comprises an M2 (blower motor), a speed regulation module and a blower relay, which are all connected to a real object. The wind speed gear of the blower is controlled by the speed regulating module through controlling the voltage at the two ends of the blower motor. The voltage across the blower motor is connected to the air conditioner controller 31 and also to the HIL cabinet AD converter 24. The HIL cabinet can acquire voltage signals in real time through the AD converter 24, converts the voltage signals into digital quantity signals, and can convert the digital quantity signals into specific air quantity gear information of the motor according to a table.
In this embodiment, the functional requirements in the test case are converted into a control flow that can be realized by software, and then a test sequence is established and run in the automated test system. The output is processed by the internal program of the tested object, the HIL cabinet collects the output result of the tested object, and the HIL upper computer control system analyzes and evaluates the collected result by utilizing the python script, so that the automatic test of the function of the air conditioner controller 31 is realized.
For the convenience of understanding, taking the voltage boosting strategy of the intelligent generator as an example, (air-conditioning side functional requirements: one of the conditional air volumes is manually controlled to the maximum gear), the HIL automatic test process is as follows:
step S101, supplying power to an air conditioner controller;
step S102, initializing an air conditioner state to enable the air conditioner to be in a closed state;
step S103, manually turning on the air conditioner, and simulating a maximum refrigeration soft key of a hand motor air conditioner by simulating a CAN signal of IVI to enable the air conditioner to be in a maximum refrigeration state;
step S104, collecting an AC _0x305 message, and judging whether a voltage boosting request message is sent;
step S105, analyzing and evaluating the acquired result by using a python script, if a request message for raising the voltage is sent out in the maximum refrigeration state of the air conditioner, the test is passed, otherwise, the test is not passed;
step S106, initializing an air conditioner state;
and step S107, powering off and cutting off the power supply of the air conditioner controller.
In summary, in the vehicle air conditioner testing system in the above embodiments of the present invention, the automatic testing of the vehicle air conditioner system is implemented by building the testing model, editing and executing the simulation test signal, and the tester does not need to engage in repeated and tedious testing work, and releases the manual testing state of the worker, and only needs to start the simulation test signal on the upper computer, and the control cabinet automatically tests the vehicle air conditioner system according to the test script to generate the test result, thereby greatly improving the working efficiency of the test.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a vehicle air conditioner test system for test vehicle air conditioner system, its characterized in that, vehicle air conditioner test system includes:
the system comprises an upper computer and a control cabinet which is in communication connection with the upper computer, wherein the upper computer is used for sending a plurality of different simulation test signals to the control cabinet, and the control cabinet is used for carrying out corresponding performance detection on the vehicle-mounted control system according to a target simulation test signal sent by the upper computer;
the control cabinet is internally provided with a communication module, the communication module is used for sending the target simulation test signal to the vehicle-mounted air conditioning system and sending state information fed back by the vehicle-mounted air conditioning system according to the target simulation test signal to the upper computer, and the upper computer analyzes the state information by using the existing script and obtains a corresponding detection result.
2. The vehicle-mounted air conditioner testing system according to claim 1, wherein the vehicle-mounted air conditioner system comprises an air conditioner controller and a peripheral device set electrically connected with the air conditioner controller, and the peripheral device set comprises an air outlet mode motor, a temperature air door motor, a circulating air door motor and an air blower system.
3. The vehicle-mounted air conditioner testing system of claim 2, wherein the communication module comprises an IO board card and a CAN communication board card connected with the air conditioner controller through analog lines;
the upper computer can output high level or low level to the air conditioner controller through the IO board card so as to simulate signal input of air conditioner physical keys, wherein the air conditioner physical keys comprise a power supply button, an AUTO button, an air volume adding button, an air volume reducing button and a maximum defrosting button;
the CAN communication board is used for sending an analog message signal to the air conditioner controller and collecting state information fed back by the air conditioner controller according to the analog message signal and sending the state information to the upper computer.
4. The vehicle-mounted air conditioner testing system according to claim 2, wherein a power supply module is further arranged in the control cabinet, the power supply module is electrically connected with the air conditioner controller to supply power to the air conditioner controller and the peripheral device set, and the upper computer can control the power supply module to output different voltages to the air conditioner controller.
5. The vehicle-mounted air conditioner testing system of claim 3, wherein the IO board card is configured to send resistance signals simulating an in-vehicle temperature sensor, an evaporation temperature sensor and a sunlight sensor to the air conditioner controller through a simulation line.
6. The vehicle-mounted air conditioner testing system according to claim 3, wherein a DA converter connected with the air conditioner controller through an analog line is further arranged in the control cabinet, and the DA converter is used for sending feedback voltage signals of the analog refrigerant pressure sensor and the negative ion generator to the air conditioner controller through the analog line.
7. The vehicle-mounted air conditioner testing system of claim 3, wherein the CAN communication board card is used for sending an outside temperature message signal simulating an outside temperature sensor to the air conditioner controller through a simulation line.
8. The vehicle-mounted air conditioner testing system according to claim 3, wherein an LIN communication board card connected with the air conditioner controller through a simulation line is arranged in the control cabinet, and the LIN communication board card is used for sending a PM2.5 value message signal simulating a PM2.5 sensor to the air conditioner controller through the simulation line.
9. The vehicle-mounted air conditioner testing system according to claim 2, wherein an AD converter connected with the air outlet mode motor, the temperature damper motor, the circulating damper motor and the blower system is arranged in the control cabinet, and the AD converter is used for collecting analog quantity voltage signals of the air outlet mode motor, the temperature damper motor, the circulating damper motor and the blower system, converting the analog quantity voltage signals into digital quantity signals and sending the digital quantity signals to the upper computer.
10. The vehicle-mounted air conditioner testing system of claim 1, wherein the upper computer analyzes the collected state information by using a python script and obtains a corresponding detection result.
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| US20130205806A1 (en) * | 2012-02-13 | 2013-08-15 | Spx Corporation | Method and Apparatus for Improving Accuracy of A/C Diagnostic Tests |
| CN204667180U (en) * | 2015-06-11 | 2015-09-23 | 南方英特空调有限公司 | Automatic air conditioning controller of automobile detector |
| CN106774260A (en) * | 2016-12-22 | 2017-05-31 | 惠州华阳通用电子有限公司 | The automatic test approach and its system of on-board air conditioner controller |
| CN107577218A (en) * | 2017-08-31 | 2018-01-12 | 中国第汽车股份有限公司 | A kind of air conditioning for automobiles control unit automated test device |
| CN112378687A (en) * | 2020-11-24 | 2021-02-19 | 宝能(广州)汽车研究院有限公司 | Automatic testing system and method for vehicle-mounted air conditioner |
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Application publication date: 20220705 |