CN108052088B - Automatic test system for display information of automobile air conditioner controller - Google Patents
Automatic test system for display information of automobile air conditioner controller Download PDFInfo
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- CN108052088B CN108052088B CN201711262500.2A CN201711262500A CN108052088B CN 108052088 B CN108052088 B CN 108052088B CN 201711262500 A CN201711262500 A CN 201711262500A CN 108052088 B CN108052088 B CN 108052088B
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- air conditioner
- conditioner controller
- display information
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- lcd screen
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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
- G05B23/0221—Preprocessing measurements, e.g. data collection rate adjustment; Standardization of measurements; Time series or signal analysis, e.g. frequency analysis or wavelets; Trustworthiness of measurements; Indexes therefor; Measurements using easily measured parameters to estimate parameters difficult to measure; Virtual sensor creation; De-noising; Sensor fusion; Unconventional preprocessing inherently present in specific fault detection methods like PCA-based methods
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- Automation & Control Theory (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to the technical field of vehicle-mounted air conditioners, in particular to an automatic test system for display information of an automobile air conditioner controller, which comprises a PC (personal computer) with pre-installed test software, a test board card, a tested automobile air conditioner controller with a segment code LCD (liquid crystal display) screen and a display information acquisition module, wherein the segment code LCD screen is arranged on the test board card; the display information acquisition module, the PC, the test board card and the tested air conditioner controller are electrically connected in sequence. The invention aims to provide an automatic test system for display information of an automobile air conditioner controller, and the technical scheme provided by the invention solves the technical problems that the existing method for realizing the display information test of the automobile air conditioner controller by using an image processing tool is high in economic cost and technical cost and low in execution timeliness.
Description
Technical Field
The invention relates to the technical field of vehicle-mounted air conditioners, in particular to an automatic test system for display information of an automobile air conditioner controller.
Background
The automobile air conditioner controller is used as a control center of an automobile air conditioner, and in the research and development process of automatic testing of the automobile air conditioner controller, judgment of LCD display information of the automobile air conditioner controller is required to be obtained and automatically judged, so that real automatic testing is realized.
The traditional operation method is realized by assistance of an image processing tool, because the display information of the automobile air conditioner controller is relatively simple, and when the software function of the air conditioner controller is tested, the LCD of the air conditioner controller is segment code display, only whether the segment code display is displayed is judged, and excessive test comparison in the aspect of image display quality is not needed, the image processing tool assistance realization method is adopted to realize the test of the LCD display information of the automobile air conditioner controller at both economic cost and technical cost, and the execution timeliness is relatively low.
Disclosure of Invention
The invention aims to provide an automatic test system for display information of an automobile air conditioner controller, and the technical scheme provided by the invention solves the technical problems of higher economic cost, higher technical cost and lower execution timeliness of the conventional method for realizing the display information test of the automobile air conditioner controller by using an image processing tool.
In order to solve the technical problem, the invention provides an automatic test system for display information of an automobile air conditioner controller, which comprises a PC (personal computer) with pre-installed test software, a test board card, a tested automobile air conditioner controller with a segment code LCD (liquid crystal display) screen and a display information acquisition module, wherein the segment code LCD screen is arranged on the PC; the display information acquisition module, the PC, the test board card and the tested air conditioner controller are electrically connected in sequence;
the PC is used for outputting the operation information of the test case to the test board card, receiving the detection signal input by the display information acquisition module, comparing the image signal corresponding to the operation information with the detection signal and outputting a detection report with a comparison result;
the test board card is used for simulating the operation of keys and knobs of the air conditioner controller, generating specific operation signals according to the operation information of the PC, outputting the specific operation signals to the tested air conditioner controller and collecting information fed back by the tested air conditioner controller;
the tested air conditioner controller is used for receiving a specific operation signal of the test board card and making a corresponding response on the segment code LCD screen;
the display information acquisition module is right opposite to the segment code LCD screen of the tested air conditioner controller and is used for converting the image signals displayed by the segment code LCD screen into detection signals.
Preferably, the display information acquisition module comprises a photoelectric detection circuit, a coder and an MCU; the photoelectric detection circuit is used for identifying each icon of the segment code LCD screen and converting the icon into block information of high level or low level; the encoder is used for encoding the block information; and the MCU is used for converting the codes obtained by the encoder into standard serial data streams conforming to the RS232 communication protocol.
Preferably, the photoelectric detection circuit comprises a photodiode facing the segment code LCD screen and an LM339 detection chip connected with the photodiode.
Preferably, the photoelectric detection circuit identifies each block of icon of the segment code LCD screen and converts the block of icon into block information of high level or low level; the photodiode identifies each icon of the segment code LCD screen, the lighted block in the segment code LCD screen generates a low level signal through the LM339 detection chip, and the unlighted block generates a high level signal through the LM339 detection chip.
Preferably, the PC further comprises a camera for collecting and amplifying the image on the segment code LCD screen.
Preferably, the testing software preinstalled in the PC is Vector CANoe software.
Preferably, the device also comprises a programmable power supply and a direct current stabilized power supply; the programmable power supply is used for providing an adjustable power supply for the test board card and the tested air conditioner controller; and the direct current stabilized voltage power supply is used for providing a fixed power supply for the test board card and the tested air conditioner controller.
Therefore, the technical scheme provided by the invention can achieve the following beneficial effects: the invention collects the pattern displayed by the segment code LCD screen of the tested air conditioner controller through the display information collection module, automatically tests the displayed pattern through the test software preinstalled by the PC, realizes the modular control of the system and realizes the high reuse rate of the system; the test result is automatically judged through a program, so that result misjudgment caused by human factors is avoided; compared with a visual recognition system, the method is low in cost and easy to implement.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments of the present invention or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a system connection block diagram according to an embodiment of the present invention;
FIG. 2 is a block diagram of a software design according to an embodiment of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
When the air conditioner controller software function is tested, the LCD of the air conditioner controller displays segment codes, and only needs to judge whether the segment codes are displayed, so that the image processing tool is adopted to assist the realization method to have higher economic cost and technical cost and lower execution timeliness for the automobile air conditioner controller LCD display information test.
In order to solve the above technical problems, please refer to fig. 1-2, the embodiment provides an automatic test system for display information of an automotive air conditioning controller 30, which includes a PC 10 pre-installed with test software, a test board card 20, a tested automotive air conditioning controller 30 with a segment code LCD screen 31, and a display information acquisition module 40; the display information acquisition module 40, the PC 10, the test board 20 and the tested air conditioner controller 30 are electrically connected in sequence.
Also included are a programmable power supply 50 and a regulated dc power supply 60. The programmable power supply 50 is used for providing an adjustable power supply for the test board card 20 and the tested air conditioner controller 30; and the direct-current stabilized power supply 60 is used for supplying fixed power to the test board card 20 and the tested air conditioner controller 30.
The PC 10 is configured to output operation information of the test case to the test board 20, receive a detection signal input by the display information acquisition module 40, compare an image signal and the detection signal corresponding to the operation information, and output a detection report with a comparison result. Since the design programming of the automatic test system for display information of the vehicle air conditioner controller 30 provided in this embodiment implements the CAPL language mainly based on the Vector CANoe software, the test software preinstalled in the PC 10 in this embodiment is the Vector CANoe software.
The test board card 20 is configured to simulate key and knob operations of the air conditioner controller 30, generate specific operation signals according to the operation information of the PC 10, output the specific operation signals to the tested air conditioner controller 30, and collect information fed back by the tested air conditioner controller 30.
And the tested air conditioner controller 30 is used for receiving the specific operation signal of the test board card 20 and responding to the segment code LCD screen 31 correspondingly.
The display information acquisition module 40 is right opposite to the segment code LCD screen 31 of the tested air conditioner controller 30, and is used for converting the image signal displayed on the segment code LCD screen 31 into a detection signal, wherein the detection signal is a level signal and a data stream. Which includes a photo detection circuit 41, an encoder 42 and an MCU 43. The photoelectric detection circuit 41 is used for identifying each block of icons of the segment code LCD screen 31 and converting the block of icons into high-level or low-level block information; an encoder 42 for encoding the block information; and the MCU43 is used for converting the codes obtained by the encoder 42 into a standard serial data stream conforming to the RS232 communication protocol.
Specifically, since the segment code LCD panel 31 of the tested air conditioner controller 30 is a segment code display, the photo detection circuit 41 includes a photodiode 411 facing the segment code LCD panel 31 and an LM339 detection chip 412 connected to the photodiode 411 according to the characteristics of the segment code LCD panel 31. The photoelectric detection circuit 41 identifies each block of icon of the segment code LCD screen 31 and converts the block of icon into block information of high level or low level; the photodiode 411 identifies each icon of the segment code LCD panel 31, the lighted one of the segment code LCD panel 31 generates a level signal (e.g. low level) through the LM339 detection chip 412, and the unlighted one generates a level signal (e.g. high level) through the LM339 detection chip 412; all of these identified chunk information is then encoded by the encoder 42 and converted by the MCU43 into a standard serial data stream conforming to the RS232 communications protocol.
The test software of the PC 10 analyzes the icon information actually displayed on the LCD against the customized rule, and compares the result with the expected result, thereby determining the error.
In order to improve the accuracy of the icon collection by the display information collection module 40, the PC 10 further includes a camera for collecting and amplifying the image on the segment code LCD screen 31, so that the photodiode can identify each segment code icon conveniently.
The automatic test system provided by this embodiment collects patterns displayed on a segment code LCD screen of the tested air conditioner controller through the display information collection module, and automatically tests the displayed patterns through test software preinstalled in the PC, so as to realize modular control of the system and high reuse rate of the system; the test result is automatically judged through a program, so that result misjudgment caused by human factors is avoided; compared with a visual recognition system, the method is low in cost and easy to implement.
The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.
Claims (6)
1. The utility model provides an automatic test system of vehicle air conditioner controller display information which characterized in that: the system comprises a PC (personal computer) with pre-installed test software, a test board card, a tested automobile air conditioner controller with a segment code LCD (liquid crystal display) screen and a display information acquisition module; the display information acquisition module, the PC, the test board card and the tested air conditioner controller are electrically connected in sequence;
the PC is used for outputting the operation information of the test case to the test board card, receiving the detection signal input by the display information acquisition module, comparing the image signal corresponding to the operation information with the detection signal and outputting a detection report with a comparison result;
the test board card is used for simulating the operation of keys and knobs of the air conditioner controller, generating specific operation signals according to the operation information of the PC, outputting the specific operation signals to the tested air conditioner controller and collecting information fed back by the tested air conditioner controller;
the tested air conditioner controller is used for receiving a specific operation signal of the test board card and making a corresponding response on the segment code LCD screen;
the display information acquisition module comprises a photoelectric detection circuit, a coder and an MCU; the photoelectric detection circuit is used for identifying each icon of the segment code LCD screen and converting the icon into block information of high level or low level; the encoder is used for encoding the block information; the MCU is used for converting the codes obtained by the encoder into standard serial data streams conforming to an RS232 communication protocol;
the display information acquisition module is right opposite to the segment code LCD screen of the tested air conditioner controller and is used for converting the image signals displayed by the segment code LCD screen into detection signals.
2. The automatic test system for the display information of the automobile air conditioner controller according to claim 1, characterized in that: the photoelectric detection circuit comprises a photodiode facing the segment code LCD screen and an LM339 detection chip connected with the photodiode.
3. The automatic test system for the display information of the automobile air conditioner controller according to claim 2, characterized in that: the photoelectric detection circuit identifies each block of icons of the segment code LCD screen and converts the icons into block information of high level or low level; the photodiode identifies each icon of the segment code LCD screen, the lighted block in the segment code LCD screen generates a low level signal through the LM339 detection chip, and the unlighted block generates a high level signal through the LM339 detection chip.
4. The automatic test system for the display information of the automobile air conditioner controller according to claim 3, characterized in that: the PC machine also comprises a camera used for collecting and amplifying the image on the segment code LCD screen.
5. The automatic test system for the display information of the automobile air conditioner controller according to claim 4, characterized in that: the pre-installed test software in the PC is Vector CANoe software.
6. The automatic test system for the display information of the automobile air conditioner controller according to claim 5, characterized in that: the device also comprises a programmable power supply and a direct current stabilized power supply; the programmable power supply is used for providing an adjustable power supply for the test board card and the tested air conditioner controller; and the direct current stabilized voltage power supply is used for providing a fixed power supply for the test board card and the tested air conditioner controller.
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| CN201711262500.2A CN108052088B (en) | 2017-12-04 | 2017-12-04 | Automatic test system for display information of automobile air conditioner controller |
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| CN108700874A (en) | 2018-03-21 | 2018-10-23 | 深圳市元征软件开发有限公司 | A kind of graphic display method of data flow, system and automotive diagnostic installation |
| CN109272909B (en) * | 2018-10-16 | 2021-12-24 | 珠海晖达科技有限公司 | Segment code liquid crystal display detection method and device, computer device and computer readable storage medium |
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| CN101672663A (en) * | 2009-09-18 | 2010-03-17 | 中国汽车技术研究中心 | Auto meter visual detecting system based on computer and detecting method thereof |
| CN206057368U (en) * | 2016-08-29 | 2017-03-29 | 宝沃汽车（中国）有限公司 | The speedometer automatic checkout system of vehicle |
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| CN101770088B (en) * | 2008-12-26 | 2011-12-28 | 京东方科技集团股份有限公司 | liquid crystal display module testing device and data transmission method thereof |
| JP5403697B2 (en) * | 2010-11-02 | 2014-01-29 | Ｎｅｃフィールディング株式会社 | Circuit board impact test apparatus and circuit board impact test method |
| CN201926925U (en) * | 2011-01-31 | 2011-08-10 | 中国建筑第二工程局有限公司 | Multifunctional test board for control system of mixing station |
| CN203070097U (en) * | 2013-02-07 | 2013-07-17 | 四川海特高新技术股份有限公司 | Comprehensive test device based on aviation flight management control display assembly |
| CN105301569B (en) * | 2014-06-12 | 2018-09-25 | 惠州市德赛西威汽车电子股份有限公司 | Reversing radar of vehicle display instrument tests system and its test method |
| CN104635092A (en) * | 2015-02-26 | 2015-05-20 | 北京精密机电控制设备研究所 | Detection device and detection method for electromechanical servo system |
| CN106226688A (en) * | 2016-07-21 | 2016-12-14 | 宁波华德汽车零部件有限公司 | A kind of test equipment for automatically testing vehicle switch module performance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101672663A (en) * | 2009-09-18 | 2010-03-17 | 中国汽车技术研究中心 | Auto meter visual detecting system based on computer and detecting method thereof |
| CN206057368U (en) * | 2016-08-29 | 2017-03-29 | 宝沃汽车（中国）有限公司 | The speedometer automatic checkout system of vehicle |
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