CN108332980A - A kind of car electrics automatic test device and method - Google Patents
A kind of car electrics automatic test device and method Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000012360 testing method Methods 0.000 title abstract description 11
- 238000001514 detection method Methods 0.000 claims abstract description 158
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000007921 spray Substances 0.000 claims abstract description 4
- 238000004891 communication Methods 0.000 claims description 24
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- 238000005507 spraying Methods 0.000 claims description 12
- 238000005286 illumination Methods 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 11
- 238000012216 screening Methods 0.000 claims description 9
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The present invention discloses a kind of car electrics automatic test device and method, is related to technical field of automotive electronics, realizes the automatic detection to rainwater light sensor and logical combination car light, can ensure the accuracy of testing result while promoting detection efficiency.The device includes host computer computer, control unit, environmental simulation unit and detection unit, and host computer computer is connect with control unit, and control unit is connect with environmental simulation unit, and detection unit is connect with host computer computer and control unit respectively；Environmental simulation unit controls water spray Simulated rainwater and/or adjusts lighting simulation sunlight according to analog signal；Detection unit is according to detection signal acquisition detection information；Control unit is based on detection instruction output analog control signal and detection signal；Host computer computer is according to analog signal and/or detection information, the corresponding testing result for exporting rainwater light sensor and/or logical combination car light.This method includes the device that above-mentioned technical proposal is carried.
Description
Technical Field
The invention relates to the technical field of automobile electronics, in particular to an automobile electrical appliance function detection device and method.
Background
With the rapid development of economy and improvement of living standard of people in China, the automobile industry in China has already stepped into a high-speed growth period. Not only the yield of the automobile is greatly increased, but also the technological content of the automobile is continuously increased. Modern automobile manufacturing technology is increasingly and closely fused with electronic technology and information technology. Automobiles are no longer simple vehicles, but have become the carrier of modern technology.
In order to ensure the factory yield of the automobile, the factory detection of the automobile is particularly important, wherein the detection of the rain light sensor and the automobile lamp is an important detection item of the automobile electrical appliance, the traditional detection method is mainly completed through manual testing, for example, when the rain light sensor is detected, in order to detect the environment with a specific mode, the automobile is usually required to be driven outdoors (the brightness is enhanced) or covered with a rain cloth (the brightness is reduced), and whether the automobile works normally is judged by observing the action output of the rain light sensor in different light environments; when the car lights are detected, one person is required to sit in the cab to operate different light switches one by one, and the other person correspondingly records the light state outside the car so as to judge whether the car lights work normally; therefore, the manual testing method has the defects of low testing efficiency and dependence on subjective judgment of testing personnel on the testing result, and can not meet the requirement of high-speed development on automobile production.
Disclosure of Invention
The invention aims to provide a device and a method for detecting functions of automobile electrical appliances, which realize automatic detection of a rainwater light sensor and a logic combination automobile lamp and can ensure the accuracy of a detection result while improving the detection efficiency.
In order to achieve the above object, one aspect of the present invention provides an automotive electrical appliance function detection device for automatically detecting a rain light sensor and a logic combination automotive lamp, wherein the device comprises an upper computer, a control unit, an environment simulation unit and a detection unit, the upper computer is connected with the control unit, the control unit is connected with the environment simulation unit, and the detection unit is respectively connected with the upper computer and the control unit;
the environment simulation unit is used for controlling the water spraying amount to simulate rainwater and/or adjusting illumination to simulate sunlight according to the simulation signal;
the detection unit is used for acquiring detection information according to the detection signal, wherein the detection information comprises wiper state information, vehicle exterior environment brightness information and vehicle lamp brightness information;
the control unit is used for outputting an analog control signal and the detection signal based on a detection instruction;
and the upper computer is used for correspondingly outputting the detection result of the rainwater light sensor and/or the logic combination car lamp according to the analog signal and/or the detection information.
The environment simulation unit comprises a water pump, a light regulator, a sprinkler head, a lamp holder and a magnetic sucker, wherein the water pump and the light regulator are respectively connected with the control unit, the water pump is communicated with the sprinkler head through a water pipe, the light regulator is electrically connected with the lamp holder, and the light regulator and the lamp holder are of an integrated structure;
the water pump is used for controlling the water spraying amount of the water spraying head according to the rainwater analog signal;
the light regulator is used for regulating the illumination of the lamp holder according to the sunlight simulation signal;
the magnetic sucker is used for fixing the sprinkler head and the lamp cap of the integrated structure at a designated position of a vehicle body through a flexible hose;
the analog signal includes the rain analog signal and the sunlight analog signal.
Further, the environment simulation unit further comprises a driving plate, and the water pump and the lamp holder are respectively connected with the control unit through the driving plate.
Preferably, the detection unit comprises a motion sensor, a CAN interface, an LIN interface and a plurality of light source brightness detection sensors which are respectively connected with the control unit, the CAN interface is in signal connection with a CAN gateway of the vehicle body, the LIN interface is in signal connection with a BCM controller of the vehicle body, and the plurality of light source brightness detection sensors are correspondingly installed on a lamp shade of the vehicle lamp;
the action sensor is used for sensing the action state of the windscreen wiper and acquiring the state information of the windscreen wiper;
the LIN interface is used for receiving the vehicle exterior environment brightness message in the BCM controller and acquiring vehicle exterior environment brightness information;
the CAN interface is used for receiving the message information of the lighting of the vehicle lamp in the CAN gateway;
the light source brightness detection sensor is used for acquiring the brightness value of the corresponding car lamp according to the car lamp lighting message information.
Preferably, the detection unit further comprises a communication interface for establishing communication connection between the detection unit and the upper computer;
the communication interface is an RS232 interface.
Preferably, the upper computer comprises an instruction input module and a judgment output module, the instruction input module is connected with the control unit, and the judgment output module is connected with the communication interface.
The instruction input module is used for inputting one or more of a rainwater detection instruction of the rainwater light sensor, a light detection instruction of the rainwater light sensor and a light function detection instruction of the logic combination vehicle lamp;
the judgment output module is used for judging that the rainwater detection function of the rainwater light sensor is normal when the sprinkler head sprays water and the windscreen wiper moves; or,
the device is used for judging that the light ray detection function of the rainwater light ray sensor is normal when the lamp cap flickers and the brightness information of the environment outside the automobile changes along with the flickering of the lamp cap; or,
and the system is used for judging that the logic combination vehicle lamp with the corresponding function is normal when the brightness information of the logic combination vehicle lamp with any function reaches the standard, wherein the brightness information comprises the brightness value of each vehicle lamp in the logic combination vehicle lamp.
Preferably, the upper computer further comprises a storage module and a comparison module, the comparison module is arranged between the communication interface and the judgment output module, and the storage module is connected with the comparison module;
the storage module is used for storing the brightness information sample of the logic combination car lamp of each function;
the comparison module is used for comparing the collected brightness information with the logical combination car lamp brightness information sample of the corresponding function, and when the comparison result is in the threshold range, the brightness information of the corresponding car lamp combination function is judged to reach the standard.
Preferably, the comparison module comprises a processing submodule, a screening submodule and a calculation submodule which are connected in sequence, the input end of the processing submodule is connected with the output end of the communication interface, and the output end of the calculation submodule is connected with the input end of the judgment output module;
the screening submodule is used for collecting the number of the vehicle lamps corresponding to all the n functional logic combination vehicle lamps and screening out a group with the maximum number m of the vehicle lamps;
the processing submodule is used for establishing a standard matrix of n x m according to the brightness information sample, and establishing a detection matrix according to the collected brightness information, wherein any element in the standard matrix/the detection matrix represents the brightness value of the vehicle lamp;
and the calculation submodule calculates the sum of squares of the residual errors of the detection matrix and the standard matrix, and judges that the brightness information of the corresponding car lamp combination function reaches the standard when the calculation result is within the threshold range.
Optionally, the upper computer further comprises a shift module connected with the instruction input module;
and the shifting module is used for sequentially calling out the next detection instruction to the input module after the current detection instruction is finished.
Compared with the prior art, the function detection device for the automobile electrical appliance provided by the invention has the following beneficial effects:
the invention provides a function detection device for automobile electrical appliances, which is composed of an upper computer, a control unit, an environment simulation unit and a detection unit. The control unit correspondingly outputs a rainwater analog signal/sunlight analog signal after receiving the instruction, so that the environment simulation unit controls water to simulate rainwater according to the rainwater analog signal or controls illumination to simulate sunlight according to the sunlight analog signal; and because the detection unit is respectively connected with the upper computer and the control unit, after the environment simulation unit simulates rainwater/sunlight, the detection unit can receive the detection signal sent by the control unit and correspondingly acquire the state information of the windscreen wiper, the environment brightness information outside the vehicle and the vehicle lamp brightness information, so that the upper computer can correspondingly output the detection result of the rainwater optical line sensor and/or the logic combination vehicle lamp based on the simulation signal and/or the detection information.
In the process of detecting the rain light sensor, when the environment simulation unit receives a rain simulation signal, water is sprayed to the rain light sensor mounted on the windscreen wiper, the state of the windscreen wiper is detected by the detection unit, and if the windscreen wiper works, the upper computer judges that the rain detection function of the rain light sensor is normal; similarly, when the environment simulation unit receives the sunlight simulation signal, the illumination intensity is automatically adjusted, the brightness information of the environment outside the vehicle is detected through the detection unit, and the upper computer judges that the sunlight detection function of the rainwater light sensor is normal when the brightness information of the environment outside the vehicle changes; or, in the process of detecting the logic combination vehicle lamp, the brightness information of the logic combination vehicle lamp is detected by the detection unit, and when the brightness information of the logic combination vehicle lamp with any function reaches the standard, the upper computer judges that the function of the logic combination vehicle lamp is normal. Therefore, the automobile electrical appliance function detection device provided by the embodiment can simulate the detection environment manually, and the automatic detection of the functions of the rainwater light sensor and the logic combination automobile lamp is completed, so that the accuracy of the detection efficiency and the detection result is improved.
The invention provides a method for detecting the functions of the automobile electrical appliances, which comprises the device for detecting the functions of the automobile electrical appliances in the technical scheme.
Compared with the prior art, the beneficial effects of the method for detecting the functions of the automobile electrical appliances provided by the invention are the same as those of the device for detecting the functions of the automobile electrical appliances provided by the technical scheme, and the detailed description is omitted.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of an apparatus for detecting functions of electrical appliances of an automobile according to a first embodiment;
FIG. 2 is a schematic structural diagram of an electrical function detecting apparatus for an automobile according to a first embodiment;
FIG. 3 is a schematic diagram of the environment simulation unit shown in FIG. 2;
fig. 4 is a schematic flow chart illustrating a method for detecting functions of automotive electrical appliances according to an embodiment.
Reference numerals:
1-an upper computer and 2-a control unit;
3-an environment simulation unit, 4-a detection unit;
11-instruction input module, 12-comparison module;
13-judgment output module, 14-storage module;
121-a processing submodule, 122-a screening submodule;
123-calculation submodule.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. 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.
Example one
Referring to fig. 1 and 2, the device for detecting functions of an automotive electrical appliance provided in this embodiment is used for automatically detecting a rain sensor and a logical combination vehicle lamp, and includes an upper computer 1, a control unit 2, an environment simulation unit 3 and a detection unit 4, wherein the upper computer 1 is connected with the control unit 2, the control unit 2 is connected with the environment simulation unit 3, and the detection unit 4 is respectively connected with the upper computer 1 and the control unit 2; the environment simulation unit 3 is used for controlling the water spraying amount to simulate rain and/or adjusting illumination to simulate sunlight according to the simulation signal; the detection unit 4 is used for acquiring detection information according to the detection signal, wherein the detection information comprises wiper state information, vehicle exterior environment brightness information and vehicle lamp brightness information; the control unit 2 is used for outputting an analog control signal and a detection signal based on the detection instruction; the upper computer 1 is used for correspondingly outputting the detection result of the rainwater light sensor and/or the logic combination vehicle lamp according to the analog signal and/or the detection information.
In the specific implementation process, in the process of detecting the rainwater light sensor, when the environment simulation unit 3 receives a rainwater simulation signal, water is sprayed to the rainwater light sensor arranged on the windscreen wiper, at the moment, the state of the windscreen wiper is detected through the detection unit 4, and if the windscreen wiper works, the upper computer 1 judges that the rainwater detection function of the rainwater light sensor is normal; similarly, when the environment simulation unit 3 receives the sunlight simulation signal, the illumination intensity is automatically adjusted, the brightness information of the environment outside the vehicle is detected through the detection unit 4, and the upper computer 1 judges that the sunlight detection function of the rainwater light sensor is normal when the brightness information of the environment outside the vehicle changes; in the process of detecting the logic combination vehicle lamp, the brightness information of the logic combination vehicle lamp is detected by the detection unit 4, and when the brightness information of the logic combination vehicle lamp of any function reaches the standard, the host computer 1 judges that the function of the logic combination vehicle lamp is normal.
According to the implementation process, the upper computer 1, the control unit 2 and the environment simulation unit 3 are sequentially connected, a water injection instruction/a light modulation instruction can be input by controlling the upper computer 1, and the control unit 2 correspondingly outputs a rainwater simulation signal/a sunlight simulation signal after receiving the instruction, so that the environment simulation unit 3 controls water to simulate rainwater according to the rainwater simulation signal or controls illumination to simulate sunlight according to the sunlight simulation signal; and because the detection unit 4 is respectively connected with the upper computer 1 and the control unit 2, after the environment simulation unit 3 simulates rainwater/sunlight, the detection unit 4 can receive a detection signal sent by the control unit 2 and correspondingly acquire windscreen wiper state information, vehicle exterior environment brightness information and vehicle lamp brightness information, so that the upper computer 1 can correspondingly output a detection result of a rainwater light sensor and/or a logical combination vehicle lamp based on the simulation signal and/or the detection information. Therefore, the automobile electrical appliance function detection device provided by the embodiment can simulate the detection environment manually, and the automatic detection of the functions of the rainwater light sensor and the logic combination automobile lamp is completed, so that the accuracy of the detection efficiency and the detection result is improved.
Specifically, referring to fig. 3, the environment simulation unit 3 in the above embodiment includes a water pump, a light adjuster, a sprinkler head, a lamp head, and a magnetic chuck, the water pump and the light adjuster are respectively connected to the control unit 2, the water pump is communicated with the sprinkler head through a water pipe, the light adjuster is electrically connected to the lamp head, and the light adjuster and the lamp head are integrated; the water pump is used for controlling the water spraying amount of the water spraying head according to the rainwater analog signal; the light regulator is used for regulating the illumination of the lamp holder according to the sunlight analog signal; the magnetic sucker is used for fixing the sprinkler head and the lamp holder of the integrated structure at the designated position of the vehicle body through the flexible hose; the analog signals include a rain analog signal and a sunlight analog signal. In addition, the environment simulation unit 3 further comprises a driving plate, and the water pump and the lamp holder are respectively connected with the control unit 2 through the driving plate.
In specific implementation, the magnetic sucker is fixed on the top of a vehicle, and the water spraying head and the lamp cap which are integrated are fixed above the windscreen wiper through the flexible hose, so that water sprayed out of the water spraying head can be sprinkled on the rainwater light sensor to simulate a rainwater sprinkling environment really; it should be noted that, the back of the integrated structure is provided with a water pipe communication hole (not shown in the drawings) and a wire communication hole (not shown in the drawings), the water pump is communicated with the water pipe communication hole through the water pipe communication hole, and the light regulator is electrically communicated with the lamp holder through the wire communication hole.
Further, please continue to refer to fig. 2, the detecting unit 4 in the above embodiment includes a motion sensor, a CAN interface, a LIN interface and a plurality of light source brightness detecting sensors respectively connected to the control unit 2, the CAN interface is in signal connection with a CAN gateway of the vehicle body, the LIN interface is in signal connection with a BCM controller of the vehicle body, and the plurality of light source brightness detecting sensors are correspondingly installed on the lamp shade of the vehicle lamp; the action sensor is used for sensing the action state of the windscreen wiper and acquiring the state information of the windscreen wiper; the LIN interface is used for receiving the vehicle exterior environment brightness message in the BCM controller and acquiring vehicle exterior environment brightness information; the CAN interface is used for receiving the message information of the lighting of the vehicle lamp in the CAN gateway; the light source brightness detection sensor is used for acquiring the brightness value of the corresponding car lamp according to the car lamp lighting message information. The detection unit 4 also comprises a communication interface for establishing communication connection between the detection unit 4 and the upper computer 1; the communication interface is an RS232 interface.
In specific implementation, the action sensor is installed on the front windshield of the automobile, the light source brightness detection sensors are installed on the lamp covers of the automobile in a one-to-one correspondence manner, inconvenience in fixing the light source brightness detection sensors and the lamp covers is considered, please refer to the figure, the light source brightness detection sensors in the embodiment comprise sensor bodies and suckers, the light source brightness detection sensors are connected in series with each other through electric wires, and the electric wires penetrate through the bottoms of the suckers and are electrically connected with the sensor bodies, so that the brightness value of the automobile is measured. In addition, the remote communication connection between the detection unit 4 and the upper computer 1 can be realized through an RS232 interface, so that the upper computer 1 can timely acquire the state information of the windscreen wiper, the brightness information of the environment outside the vehicle and the brightness value of the vehicle lamp. In actual operation, referring to fig. 2, the CAN interface, the LIN interface, and the RS232 interface may be disposed on a processing unit, which is illustratively a data acquisition control board.
Referring to fig. 1, the upper computer 1 in the above embodiment includes a command input module 11 and a judgment output module 13, the command input module 11 is connected to the control unit 2, and the judgment output module 13 is connected to the communication interface; the instruction input module 11 is used for inputting one or more of a rainwater detection instruction of the rainwater light sensor, a light detection instruction of the rainwater light sensor and a light function detection instruction of the logic combination vehicle lamp; the judgment output module 13 is used for judging that the rainwater detection function of the rainwater light sensor is normal when the sprinkler head sprays water and the windscreen wiper moves; or, the light ray detection function of the rainwater light ray sensor is judged to be normal when the lamp cap flickers and the brightness information of the environment outside the automobile changes along with the flickering of the lamp cap; or, the method is used for judging that the logical combination vehicle lamp of the corresponding function is normal when the brightness information of the logical combination vehicle lamp of any function reaches the standard, and the brightness information comprises the brightness value of each vehicle lamp in the logical combination vehicle lamp.
After a light function detection command of the logical combination vehicle lamp is input, the upper computer 1 sequentially performs a logical combination vehicle lamp test of functions such as sequentially detecting a low beam lamp, a high beam lamp, a daytime running lamp, a position lamp, a parking lamp, a turn signal lamp, an emergency warning lamp, a brake lamp, a backup lamp, a front fog lamp, a rear fog lamp, a corner lamp, and an optical horn. In the specific implementation process, the logical combination vehicle lamp of each function usually lights a plurality of vehicle lamps at the same time, taking the golf GTI vehicle model as an example, when turning on the dipped headlight function, the dipped headlight function is dipped headlight + position light bulb + LED light band + tail lamp, that is, only the brightness value of the vehicle lamp on the right side of the equation is all up to standard, which indicates that the dipped headlight function is normal.
Optionally, with continuing reference to fig. 1, the upper computer 1 in the above embodiment further includes a storage module 14 and a comparison module 12, the comparison module 12 is disposed between the communication interface and the judgment output module 13, and the storage module 14 is connected to the comparison module 12; the storage module 14 is used for storing the brightness information samples of the logic combination car lamp of each function; the comparison module 12 is configured to compare the collected luminance information with the logical combination car light luminance information sample of the corresponding function, and when the comparison result is within the threshold range, determine that the luminance information of the corresponding car light combination function is up to standard. In addition, the upper computer 1 further comprises a shift module connected with the instruction input module 11; the shifting module is used for sequentially calling out the next detection instruction to the input module after the current detection instruction is finished.
In specific implementation, the brightness information sample is composed of standard brightness values of each vehicle lamp in the corresponding functional logic combination vehicle lamp, wherein the collection method of the brightness information sample of the logical combination vehicle lamp of each function is as follows: by the data sampling method, the logical combination vehicle lamp of each function is sampled for w times, the weighted average value of the corresponding brightness value of the logical combination vehicle lamp of each function is calculated based on the w times of sampling data, the calculated weighted average value is set as the brightness information sample of the logical combination vehicle lamp of the corresponding function, and w is more than or equal to 1000. The upper limit of the threshold may be a maximum value of the luminance information in the sample data, and the lower limit of the threshold may be a minimum value of the luminance information in the sample data.
Therefore, based on the actual detection experience of the logical combination vehicle lamps, it can be found that, because the adjacent vehicle lamps generate crosstalk, in order to ensure the accuracy of the brightness information sample, the embodiment does not use the official calibration brightness value of each vehicle lamp to form the brightness information sample, but reduces the actual error of the brightness information sample to the maximum extent through w times of actual sampling calculation.
Please refer to fig. 1, the comparison module 12 in the above embodiment includes processing sub-modules 121 and 122 and a calculating sub-module 123 connected in sequence, an input end of the processing sub-module 121 is connected to an output end of the communication interface, and an output end of the calculating sub-module 123 is connected to an input end of the judgment output module 13; 122 is used for collecting the number of the vehicle lamps corresponding to all the n functional logic combination vehicle lamps and screening out a group with the maximum number m of the vehicle lamps; the processing submodule 121 is configured to establish a standard matrix of n × m according to the brightness information sample, and establish a detection matrix according to the collected brightness information, where any element in the standard matrix/detection matrix represents a brightness value of the vehicle lamp; the calculation submodule 123 calculates the sum of squares of the residuals of the detection matrix and the standard matrix, and determines that the brightness information of the corresponding car light combination function reaches the standard when the calculation result is within the threshold range.
In specific implementation, in order to facilitate the comparison process between the collected luminance information and the luminance information sample, the embodiment employs a matrix calculation method to implement fast matching comparison, which specifically includes:
screening a group with the largest number m of vehicle lamps, establishing a standard matrix of n x m according to a brightness information sample, setting currently acquired brightness information (brightness values of the vehicle lamps) as vectors, and copying the vectors into n parts to form a detection matrix; secondly, subtracting the detection matrix and the standard matrix to obtain an operation result; and thirdly, performing square sum calculation on each row vector in the operation result, judging that the brightness information of the corresponding vehicle lamp combination function reaches the standard when the square sum result is minimum and is within a threshold range, and otherwise, judging that the brightness information does not reach the standard.
In order to reduce the number of light source brightness detection sensors and simplify the installation process, in the embodiment, 2 to 4 light source brightness detection sensors are only arranged on each headlamp assembly (more than 4 headlamps), the light information of the headlamp assembly is collected for m times through the light source brightness detection sensors, the weighted average value of the light information of the headlamp assembly is obtained based on the m light information of the headlamp assembly, a standard light intensity distribution diagram is drawn according to the result, and the identification features in the standard light intensity distribution diagram are extracted and reserved as a sample; in the actual detection process, the currently acquired headlight assembly light information can be made and drawn into a light intensity distribution graph, the identification features of the headlight assembly light information are extracted, and whether the headlight assembly light information reaches the standard can be quickly judged by comparing the extracted identification features with the sample, so that the steps of headlight detection are simple and efficient. In addition, the headlamp assembly refers to a left headlamp assembly, a right front headlamp assembly, a left rear headlamp assembly or a right rear headlamp assembly, and only the steps are required to be taken to sequentially detect the listed headlamp assemblies, which is not described herein again.
It should be noted that the functions of the control unit 2, the instruction input module 11, the judgment output module 13, the storage module 14 and the comparison module 12 in the above embodiments are all realized by existing devices or logic circuits, and this embodiment only improves the application and connection relationship of each device, but does not improve the functions of each device and logic circuits. For example, the judgment output module 13 may be a judger or a judgment circuit, and the comparison module 12 may be a microprocessor chip.
Example two
Referring to fig. 4, an embodiment of the present invention provides a method for detecting functions of an electrical appliance of an automobile, where the automobile includes the device for detecting functions of the electrical appliance of the automobile according to the first embodiment.
Compared with the prior art, the beneficial effects of the method for detecting the functions of the automobile electrical appliance provided by the embodiment of the invention are the same as those of the device for detecting the functions of the automobile electrical appliance provided by the first embodiment, and are not repeated herein.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. An automobile electrical appliance function detection device is used for automatically detecting a rainwater light sensor and a logic combination automobile lamp and is characterized by comprising an upper computer, a control unit, an environment simulation unit and a detection unit, wherein the upper computer is connected with the control unit, the control unit is connected with the environment simulation unit, and the detection unit is respectively connected with the upper computer and the control unit;
the environment simulation unit is used for controlling the water spraying amount to simulate rainwater and/or adjusting illumination to simulate sunlight according to the simulation signal;
the detection unit is used for acquiring detection information according to the detection signal, wherein the detection information comprises wiper state information, vehicle exterior environment brightness information and vehicle lamp brightness information;
the control unit is used for outputting an analog control signal and the detection signal based on a detection instruction;
and the upper computer is used for correspondingly outputting the detection result of the rainwater light sensor and/or the logic combination car lamp according to the analog signal and/or the detection information.
2. The automobile electric appliance function detection device according to claim 1, wherein the environment simulation unit comprises a water pump, a light regulator, a sprinkler head, a lamp holder and a magnetic sucker, the water pump and the light regulator are respectively connected with the control unit, the water pump is communicated with the sprinkler head through a water pipe, the light regulator is electrically connected with the lamp holder, and the light regulator and the lamp holder are of an integrated structure;
the water pump is used for controlling the water spraying amount of the water spraying head according to the rainwater analog signal;
the light regulator is used for regulating the illumination of the lamp holder according to the sunlight simulation signal;
the magnetic sucker is used for fixing the sprinkler head and the lamp cap of the integrated structure at a designated position of a vehicle body through a flexible hose;
the analog signal includes the rain analog signal and the sunlight analog signal.
3. The automotive electrical appliance function detection device according to claim 2, wherein the environment simulation unit further comprises a driving board, and the water pump and the lamp holder are respectively connected with the control unit through the driving board.
4. The automotive electric appliance function detection device according to claim 1, wherein the detection unit comprises a motion sensor, a CAN interface, an LIN interface and a plurality of light source brightness detection sensors which are respectively connected with the control unit, the CAN interface is in signal connection with a CAN gateway of an automobile body, the LIN interface is in signal connection with a BCM controller of the automobile body, and the plurality of light source brightness detection sensors are correspondingly arranged on a lamp shade of the automobile lamp;
the action sensor is used for sensing the action state of the windscreen wiper and acquiring the state information of the windscreen wiper;
the LIN interface is used for receiving the vehicle exterior environment brightness message in the BCM controller and acquiring vehicle exterior environment brightness information;
the CAN interface is used for receiving the message information of the lighting of the vehicle lamp in the CAN gateway;
the light source brightness detection sensor is used for acquiring the brightness value of the corresponding car lamp according to the car lamp lighting message information.
5. The automotive electrical appliance function detection device according to claim 4, wherein the detection unit further comprises a communication interface for establishing communication connection between the detection unit and the upper computer;
the communication interface is an RS232 interface.
6. The automotive electrical appliance function detection device according to claim 5, wherein the upper computer comprises a command input module and a judgment output module, the command input module is connected with the control unit, and the judgment output module is connected with the communication interface;
the instruction input module is used for inputting one or more of a rainwater detection instruction of the rainwater light sensor, a light detection instruction of the rainwater light sensor and a light function detection instruction of the logic combination vehicle lamp;
the judgment output module is used for judging that the rainwater detection function of the rainwater light sensor is normal when the sprinkler head sprays water and the windscreen wiper moves; or,
the device is used for judging that the light ray detection function of the rainwater light ray sensor is normal when the lamp cap flickers and the brightness information of the environment outside the automobile changes along with the flickering of the lamp cap; or,
and the system is used for judging that the logic combination vehicle lamp with the corresponding function is normal when the brightness information of the logic combination vehicle lamp with any function reaches the standard, wherein the brightness information comprises the brightness value of each vehicle lamp in the logic combination vehicle lamp.
7. The automotive electrical appliance function detection device according to claim 6, wherein the upper computer further comprises a storage module and a comparison module, the comparison module is arranged between the communication interface and the judgment output module, and the storage module is connected with the comparison module;
the storage module is used for storing the brightness information sample of the logic combination car lamp of each function;
the comparison module is used for comparing the collected brightness information with the logical combination car lamp brightness information sample of the corresponding function, and when the comparison result is in the threshold range, the brightness information of the corresponding car lamp combination function is judged to reach the standard.
8. The automotive electrical appliance function detection device according to claim 7, wherein the comparison module comprises a processing submodule, a screening submodule and a calculation submodule which are connected in sequence, wherein the input end of the processing submodule is connected with the output end of the communication interface, and the output end of the calculation submodule is connected with the input end of the judgment output module;
the screening submodule is used for collecting the number of the vehicle lamps corresponding to all the n functional logic combination vehicle lamps and screening out a group with the maximum number m of the vehicle lamps;
the processing submodule is used for establishing a standard matrix of n x m according to the brightness information sample, and establishing a detection matrix according to the collected brightness information, wherein any element in the standard matrix/the detection matrix represents the brightness value of the vehicle lamp;
and the calculation submodule calculates the sum of squares of the residual errors of the detection matrix and the standard matrix, and judges that the brightness information of the corresponding car lamp combination function reaches the standard when the calculation result is within the threshold range.
9. The automotive electrical appliance function detection device according to claim 8, wherein the upper computer further comprises a shift module connected with the instruction input module;
and the shifting module is used for sequentially calling out the next detection instruction to the input module after the current detection instruction is finished.
10. A method for detecting functions of automobile electrical appliances is characterized by comprising the following steps:
controlling the water spraying quantity to simulate rainwater and/or adjusting illumination to simulate sunlight according to the simulation signal;
acquiring detection information according to the detection signal, wherein the detection information comprises wiper state information, vehicle exterior environment brightness information and vehicle lamp brightness information;
outputting an analog control signal and the detection signal based on a detection instruction;
and correspondingly outputting the detection result of the rainwater light sensor and/or the logic combination vehicle lamp according to the analog signal and/or the detection information.
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