CN111008129A - Test method of automobile event data recording system - Google Patents
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- CN111008129A CN111008129A CN201911154625.2A CN201911154625A CN111008129A CN 111008129 A CN111008129 A CN 111008129A CN 201911154625 A CN201911154625 A CN 201911154625A CN 111008129 A CN111008129 A CN 111008129A
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- 238000010998 test method Methods 0.000 title claims abstract description 7
- 238000012360 testing method Methods 0.000 claims abstract description 65
- 238000000034 method Methods 0.000 claims abstract description 7
- 230000001133 acceleration Effects 0.000 claims abstract description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000013524 data verification Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000013100 final test Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/36—Preventing errors by testing or debugging software
- G06F11/3668—Software testing
- G06F11/3672—Test management
- G06F11/3688—Test management for test execution, e.g. scheduling of test suites
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/34—Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation ; Recording or statistical evaluation of user activity, e.g. usability assessment
- G06F11/3466—Performance evaluation by tracing or monitoring
- G06F11/3476—Data logging
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/36—Preventing errors by testing or debugging software
- G06F11/3668—Software testing
- G06F11/3672—Test management
- G06F11/3692—Test management for test results analysis
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Abstract
The invention discloses a test method of an automobile event data recording system, which comprises the following steps: the original parameter file is transmitted to a testing computer, the testing computer identifies and processes the original parameter file through built-in testing software and forms a CAN signal to be transmitted to an automobile event data recording system testing box, and the automobile event data recording system testing box is connected with a signal output device of an air bag control module through a connector; the vibration table generates actual acceleration to trigger the automobile event data recording system test box to record test result data; and the test computer acquires the test result data, compares whether the test result data file is consistent with the original parameter file or not, and judges whether the automobile event data recording system is in compliance or not. Through the technical scheme, the test on the automobile event data recording system can be realized, and the performance of the automobile event data recording system is ensured.
Description
Technical Field
The invention relates to the technical field of test of an automobile event data recording system, in particular to a test method of the automobile event data recording system.
Background
An automobile event data recording system (event data records) is a device which is integrated in an air bag control module of a vehicle and is used for recording dynamic time sequence data before, during and after a collision, and can record the speed, acceleration change, brake pedal state and other use conditions of a plurality of seconds before the collision, and the data provides important basis for the accurate reconstruction of traffic accidents. However, there is no method or system available for testing the performance of the vehicle event data recording system before the vehicle leaves the factory.
Disclosure of Invention
The invention aims to provide a test method of an automobile event data recording system aiming at the technical defects in the prior art.
The technical scheme adopted for realizing the purpose of the invention is as follows:
a test method of an automobile event data recording system comprises the following steps:
the original parameter file is transmitted to a testing computer, the testing computer identifies and processes the original parameter file through built-in testing software and forms a CAN signal to be transmitted to an automobile event data recording system testing box, and the automobile event data recording system testing box is connected with a signal output device of an air bag control module through a connector;
the vibration table generates actual acceleration to trigger the automobile event data recording system test box to record test result data;
and the test computer acquires the test result data, compares whether the test result data file is consistent with the original parameter file or not, and judges whether the automobile event data recording system is in compliance or not.
The original parameter file is an Excel format file, and the testing software CAN identify parameters in the original parameter file and form a CAN signal.
The operation interface of the built-in test software of the test computer is provided with buttons, wherein the buttons comprise a data importing button, a data sending stopping button, a record data button for reading an automobile event data recording system, a data comparison button and an experimental data exporting button.
The test software has a function of importing EXCEL document data by one key, and the contents of the form can be displayed on a software interface after the EXCEL document data is imported.
Through the technical scheme, the test of the automobile event data recording system can be realized, and the accuracy verification of data is realized so as to ensure the performance of the automobile event data recording system.
Drawings
FIG. 1 is a schematic diagram of the connection of an automotive event data recording system to an ACU connector;
FIG. 2 is a schematic diagram of the connection of the test box of the automotive event data recording system to the test computer;
FIG. 3 is a schematic view of an automotive event data logging system test box connector;
FIG. 4 is a schematic diagram of a test box connector for an automotive event data recording system;
FIG. 5 is a flow chart of an automotive event data logging system test.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the testing method of the automobile event data recording system of the present invention includes the following steps:
s1, transmitting an original parameter file to a testing computer, identifying and processing the original parameter file by the testing computer through built-in testing software to form a CAN signal and transmitting the CAN signal to a testing box of an automobile event data recording system, wherein the testing box of the automobile event data recording system is connected with a signal output device of an air bag control module through a connector;
s2, the vibration table generates actual acceleration to trigger the automobile event data recording system test box to record test result data;
and S3, the test computer acquires test result data, compares whether the test result data file is consistent with the original parameter file, and judges whether the automobile event data recording system is in compliance.
The original parameter file is an Excel format file, and the testing software CAN identify parameters in the original parameter file and form a CAN signal.
The test software has a function of importing EXCEL document data by one key, and the contents of the form can be displayed on a software interface after the EXCEL document data is imported.
The parameters of the original parameter file are specifically produced and generated according to the conditions of different tested pieces and are formed in an Excel format file. After being imported into the test calculation, the contents can be automatically converted into a table form on the interface of the test software, as shown in table one below.
| Serial number | Signal name | CAN ID | Preset value |
| 1 | Vehicle speed | 123 | 12km/h |
| 2 | Brake | 456 | Actuated by |
| 3 | Rotational speed of engine | 567 | 2345r/ |
| 4 | Steering angle | 001 | -22° |
| 5 | Rotating speed of motor | 124 | 3344r/ |
| 6 | Throttle valve | 134 | 0 |
| 7 | *** | *** | *** |
Watch 1
The parameters of the original parameter file comprise preset values of vehicle speed, brake, engine speed, steering angle, motor speed, accelerator and the like as described in the table above, so that comparison and judgment with the final test result are facilitated.
The test software can convert the imported data into corresponding can messages according to a specific mode (such as can messagelists of different vehicle types). And continuously sending a message to the automobile event data recording system according to the specified frequency by clicking to send data. The second table below is the can message list format
CAN Message list
Watch two
Furthermore, the test software has a function of sending a diagnosis instruction to the automobile event data recording system, reading data stored in the automobile event data recording system, displaying the read data at a corresponding position, comparing the read data with a preset value (comparing and judging according to rules of the laws) and judging OK and NG. As shown in table three below.
| Serial number | Signal name | CAN ID | Preset value | Record the result 1 | Determination | Record the results 2 | Determination | Record the |
Determination | |
| 1 | Vehicle speed | 123 | 12km/h | 12km/h | OK | 12km/h | OK | 12km/h | OK | |
| 2 | Brake | 456 | Actuated by | Actuated by | OK | Actuated by | OK | Actuated by | |
|
| 3 | Rotational speed of engine | 567 | 2345r/min | 2345r/min | OK | 2345r/min | OK | 2345r/ | OK | |
| 4 | Steering angle | 001 | -22° | -22° | OK | -22° | OK | -22° | |
|
| 5 | Rotating speed of motor | 124 | 3344r/min | 2710r/min | OK | 2710r/min | OK | 2710r/ | OK | |
| 6 | Throttle valve | 134 | 0 | 0 | OK | 0 | OK | 0 | OK |
Watch III
Furthermore, the test software has a function of exporting all display interfaces into Excel documents, so that data can be exported and stored conveniently.
The operation interface of the built-in test software of the test computer is provided with buttons, wherein the buttons comprise a data importing button, a data sending stopping button, a record data button for reading an automobile event data recording system, a data comparison button and an experimental data exporting button.
During testing, a positive pole and a negative pole power line of the vibration table are connected with an automobile event data recording system (device) 10 through an ACU connector 11, the ACU connector 11 is connected with a sensor 12, and detection signals are transmitted to the automobile event data recording system (device) 10.
The test box of the automobile event data recording system comprises a test box connector 4 (male end) and a test box connector 1 (female end) which is correspondingly configured with the test box connector, wherein the test box connector 1 is connected with a binding post which is used for being connected with the automobile event data recording system and comprises a binding post female end 3 and a corresponding binding post male end 2. The test box connector 4 (male end) is connected with a plurality of parallel airbag loads 7, two parallel sliding rheostats 8 and a plurality of parallel switches 9, wherein the test box connector 4 (male end) is connected with the test computer 6 through the CAN transceiver module 5 connected with the CAN port to realize the test, as shown in fig. 2.
It should be noted that, in the present invention, the load loop technical requirements of the test box of the vehicle event data recording system are as follows:
1) the resistance value of each resistor of the fixed resistor loop is 2.2 ohms, and the resistance value is required to be stable and small in temperature variation. The resistor is required to bear a load of 28V and 3A direct current, and comprises 30 resistor loops, only 2 of which are shown in FIG. 2, and particularly 30 resistors R1-R30 shown in FIG. 3.
2) The loop range requirement of the sliding rheostat is 200-3000 omega, and the adjustment precision is 100 omega. The sliding rheostat can bear the load of 24V and 0.5A direct current and comprises 2 sliding rheostat circuits.
The 3-switch loop requires that the impedance is larger than 20M omega when the loop is open and is smaller than 0.05 omega when the loop is closed. The switch loop can bear the load of 28V, 1A, wherein the switches are 9 two-gear switches, as shown in FIG. 3, and comprise switches S1-S9.
4) The CAN transceiving module 5 CAN use CAN OE or other CAN transceiving tools, and the CAN transceiving tools are required to be stable and durable, and CAN OE, a peripheral work CAN box and the like which are main products in the market are recommended.
5) The test box connector requires 100 pins or more and can be divided into 2 connectors of 50 pins each. The redundant pin is reserved, but an external wire harness needs to be connected. The connector is firm and reliable in connection and small in contact resistance.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. A test method of an automobile event data recording system is characterized by comprising the following steps:
the original parameter file is transmitted to a testing computer, the testing computer identifies and processes the original parameter file through built-in testing software and forms a CAN signal to be transmitted to an automobile event data recording system testing box, and the automobile event data recording system testing box is connected with a signal output device of an air bag control module through a connector;
the vibration table generates actual acceleration to trigger the automobile event data recording system test box to record test result data;
and the test computer acquires the test result data, compares whether the test result data file is consistent with the original parameter file or not, and judges whether the automobile event data recording system is in compliance or not.
2. The method for testing an automotive event data recording system of claim 1, wherein the raw parameter file is an Excel format file.
3. The method for testing the vehicle event data recording system according to claim 1, wherein the testing computer is provided with buttons on an operating interface of built-in testing software, wherein the buttons include a data importing button, a data sending stopping button, a data reading recording button of the vehicle event data recording system, a data comparing button and an experimental data exporting button.
4. The method for testing an automotive event data recording system according to claim 1, characterized in that the testing software has a function of importing EXCEL document data by one key, and the contents of the form can be displayed on a software interface after the EXCEL document data is imported.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112710911A (en) * | 2020-11-27 | 2021-04-27 | 中汽研汽车检验中心（天津）有限公司 | Power-off storage testing device and method for automobile event data recording system |
| CN113092898A (en) * | 2021-03-22 | 2021-07-09 | 神龙汽车有限公司 | EDR system integration parameter input testing device and testing method |
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| CN112710911A (en) * | 2020-11-27 | 2021-04-27 | 中汽研汽车检验中心（天津）有限公司 | Power-off storage testing device and method for automobile event data recording system |
| CN113092898A (en) * | 2021-03-22 | 2021-07-09 | 神龙汽车有限公司 | EDR system integration parameter input testing device and testing method |
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