CN101566849A - Functional parameter test system for automobile electronic controller and test method thereof - Google Patents
Functional parameter test system for automobile electronic controller and test method thereof Download PDFInfo
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Abstract
The invention relates to functional parameter test system of automobile electronic controller and test method thereof. The system uses a multi-path programmable matrix switch as main structure, comprises a central control computer, a programmable matrix switch with a plurality of common bus in series connection, a signal interface box or the like. The system implements test path switching and flexible configuration of the test system through common bus interconnection of a plurality of programmable matrix switch.
Description
Technical field
The present invention relates to a kind of functional parameter test macro and method of testing thereof of automobile electronic controller, be specifically related to a kind of automobile electronic controller functional parameter test macro implementation method of the program control matrix switch architecture mode of multichannel of connecting mutually based on a plurality of common bus.
Background technology
Along with the develop rapidly of global auto industry, it is safer, intelligent, more energy-conservation more that current automobile becomes, and these are main to be the fast development that has benefited from automotive electronic technology.Have the performance that increasing electronic controller is realized improving vehicle safety, car comfort, controlled aspect such as convenience on the modern automobile.Because it is very complicated that the electrical structure on the automobile becomes, this just requires all parts on the automobile just to have very high quality before installation.Therefore, automobile electronic controller all will carry out strict electric function parameter testing to each product before dispatching from the factory, all be intact product to guarantee each electronic controller that is used for entrucking.
Test implementation method at the automobile electronic controller functional parameter has a lot, and way in the past is all to develop the proprietary electric function parameter test system of a cover for every money product usually, and this method can well realize fast, the purpose of reliable test.But the universal performance of this proprietary electric function parameter test system is just very poor, if a cover special despatch airway dysfunction parameter test system is applied to the test of other controllers, the workload of transformation is just very big.
Be to have following technical matters in the prior art: the versatility of existing electric function parameter test system is poor.
Summary of the invention
The object of the present invention is to provide a kind of functional parameter test macro of automobile electronic controller promptly to have the quick test good characteristic of proprietary test macro, have good portability and compatibility again.
A kind of corresponding test method is provided simultaneously, with the program control matrix switch of multichannel is main framework, in the functional parameter test that realizes automobile electronic controller, take into account the compatibility of system, can be used for the functional parameter test of other automobile electronic controllers very easily.
The electric function parameter test system of the automobile electronic controller among the present invention mainly comprises central control computer, the program control matrix switch of a plurality of common bus series connection, signaling interface case etc.Concentric line by the program control matrix switch of a plurality of multichannels in the system links to each other, and realizes the switching of test access, realizes the flexible configuration of test macro.
Concrete technical scheme is as follows:
A kind of functional parameter test macro of automobile electronic controller, comprise central controller and the program control matrix switch of a plurality of multichannel, described central controller is controlled the program control matrix switch of described a plurality of multichannels, and the program control matrix switch of described a plurality of multichannels is connected mutually by common bus.
Described central controller is a central control computer, and the program control matrix switch of described multichannel is three.
Three program control matrix switches of multichannel are: the program control matrix switch of multichannel that vertical line links to each other with instrument port in the test macro, the program control matrix switch of multichannel that vertical line links to each other with tested electronic controller ECU input port, the program control matrix switch of big current multi-way that vertical line links to each other with tested electronic controller ECU digital output port.
The positive pole of the horizontal common bus of three program control matrix switches of multichannel and negative pole are respectively by two program control relay mutual conduction.
Also comprise interface box, interface box built-in testing system and tested electronic controller be electrically connected passage, and/or program control relay, and/or power termination etc., the contactor in the central control computer control interface case.
Comprise various data acquisition control integrated circuit boards on the described central control computer.
Described data acquisition control integrated circuit board comprises analog quantity output integrated circuit board, digital collection multimeter, CAN address card, digital input and output integrated circuit board.
Under central control computer control, the common bus mutual conduction of three program control matrix switches of multichannel, wherein, big current multi-way matrix switch or the program control matrix switch of multichannel can be linked into the corresponding port of tested ECU on the common bus, and/or the program control matrix switch of multichannel can be linked into corresponding measurement equipment on the common bus, and/or the big program control matrix switch of current multi-way can be linked into corresponding external analog load on the common bus.
A kind of method of testing of functional parameter test macro of above-mentioned automobile electronic controller uses the structure of above-mentioned test macro can carry out coupling between following different electronic controller ECU and the test macro; The vertical line of the program control matrix switch of multichannel is connected respectively on the respective signal pin of different controllers; Central controller inside is called corresponding modification with the pairing signal name of demultiplexing matrix switch vertical line; On program, the test limit value of each signal correspondence is made amendment.
Testing procedure is as follows
(1) sets up test channel;
(2) the tested port-action of the tested electronic controller ECU of control;
(3) data measure and gather;
(4) data computation and judge;
(5) test macro resets.
Step (1) specifically comprises the steps:
1) central control computer is linked into the corresponding port of tested electronic controller ECU on the common bus by controlling big current multi-way matrix switch or the program control matrix switch of multichannel;
2) central control computer is controlled the program control matrix switch of big current multi-way corresponding external analog load is linked on the common bus;
3) central control computer control is the common bus mutual conduction of three matrix switches.
In the step (2), central control computer is controlled the tested port-action of tested electronic controller ECU by the CAN communication network.
In the step (3), central control computer is measured the correlation parameter in the test loop by the integrated circuit board in the computing machine, and test data is imported to central control computer.
In the step (4), central control computer carries out corresponding calculated with the data that collect to be handled, and compare, thereby determine the functional parameter state of internal hardware circuit of the tested port of tested electronic controller ECU with the judgement limit value that is stored in computer-internal in advance.
In the step (5), finish the test of an above-mentioned passage after, central control computer resets the access passage in the program control matrix switch of multichannel, provides ready for starting next step test.
It is characterized in that described tested port can be digital input port, analog input port, frequency output terminal mouth.
Compare with present prior art, it is test macro body frame structure that automobile electronic controller electric function parameter test system among the present invention adopts the program control matrix switch of multichannel of a plurality of common bus series connection, has good compatibility and portability simultaneously again in the function that realizes quick proprietary test macro.Therefore, the automobile electronic controller electric function parameter test system among the present invention has good versatility, can realize the test of various control device with a cover hardware configuration.
Description of drawings
Fig. 1 is the principle sketch of the functional parameter test macro of automobile electronic controller of the present invention
Among the figure:
The central control computer of 1------test macro (being equipped with various test integrated circuit boards);
The 2------first program control matrix switch (it vertically links to each other with instrument port in the test macro);
The 3------second program control matrix switch (it vertically links to each other with the input port of tested ECU);
The big current-programmed matrix switch of 4------(it vertically links to each other with the digital output port of tested ECU);
5------interface box (built-in testing system and tested controller be electrically connected passage, program control relay, power termination etc.); The tested ECU controller of 6------(automobile electronic controller);
7------test macro aanalogvoltage output port;
The 8------digital multimeter is gathered port
9------load 1
10------ECU analog input port
11------ECU analog input ground
12------ECU digitally
The output of 13------ECU flash numeral
14------CAN
Embodiment
Describe the present invention with reference to the accompanying drawings below, it is a kind of preferred embodiment in the numerous embodiments of the present invention.
Specifically, the automobile electronic controller electric function parameter test system among the present invention mainly comprises central control computer, the program control matrix switch of the multichannel of two little electric currents, the program control matrix switch of big current multi-way, signaling interface case etc.Wherein comprise various data acquisition control integrated circuit boards on the central control computer, as: analog quantity output integrated circuit board, digital collection multimeter, CAN address card, digital input and output integrated circuit board etc.
The invention of the core of the electric function parameter test system of the automobile electronic controller among the present invention is that the program control matrix switch of a plurality of common bus series connection is as the test macro main framework, in the framework that common bus is connected in test macro, mainly comprise the program control matrix switch of many (three) individual multichannel, "+" of the horizontal common bus of three program control matrix switches of multichannel and "-" respectively can mutual conduction by two program control relays.Wherein three program control matrix switches of multichannel are respectively: the program control matrix switch of first multichannel that vertical line links to each other with instrument port in the test macro, the program control matrix switch of second multichannel that vertical line links to each other with tested ECU input port, the program control matrix switch of big current multi-way that vertical line links to each other with tested ECU digital output port, fictitious load also is connected on the vertical line of the program control matrix switch of big current multi-way simultaneously.Central control computer in the test macro can be according to the good cycle tests of program composition the imput output circuit of tested ECU controller being carried out the functional parameter test in advance in computing machine, when testing, central control computer can be by controlling big current multi-way matrix switch or the program control matrix switch of second multichannel is linked into the corresponding port of tested ECU on the common bus, central control computer can be controlled the program control matrix switch of first multichannel corresponding measurement equipment is linked on the common bus, central control computer can be controlled the program control matrix switch of big current multi-way corresponding external analog load is linked on the common bus, simultaneously, central control computer can be controlled the common bus mutual conduction three matrix switches, at this moment, the external testing passage of tested ECU port to be measured has just constituted complete test loop by the matrix switch that these common bus link to each other.When testing, central control computer can be controlled the tested port-action (output or input are gathered) of tested ECU controller by CAN, simultaneously, central control computer can be by the integrated circuit board (digital multimeter in the computing machine, data collecting card, analog output unit etc.) correlation parameter in the test loop is measured, and test data is imported to central control computer.Central control computer can carry out corresponding calculated to the data that collect to be handled, and compares with the judgement limit value that is stored in computer-internal in advance, thereby learns the functional parameter state of internal hardware circuit of the tested port of tested ECU.
The program control matrix switch based on many (three) individual common bus series connection among the present invention is that the functional parameter test macro of main framework has good compatibility, be mainly reflected in: when different controllers is tested, only need be connected respectively to the vertical line of the program control matrix switch of multichannel on the respective signal pin of different controllers, simultaneously central control computer inside is called corresponding modification to the pairing signal name of demultiplexing matrix switch vertical line, and the test limit value each signal correspondence is made amendment on program, just can realize the test macro coupling of different tested ECU controllers very easily.
With controller numeral flash output test is that example describes:
With reference to accompanying drawing 1: main test has following a few step:
The first step is set up test channel:
At first the tested output port of tested ECU is linked into common bus: matrix switch K2 and K3 in the big current-programmed matrix switch 4 of central control computer 1 control connect.
Then, the matrix switch K1 in the big current-programmed matrix switch 4 of central control computer 1 control connects, and realizes corresponding load is linked into common bus, realizes fictitious load is linked on the tested port of tested ECU controller.
Matrix switch K1 in the program control matrix switch 2,3 of central control computer 1 control multichannel connects, and realizes the digital multimeter in the test macro is connected on the common bus of the program control matrix switch 2,3 of multichannel.
At last, central control computer 1 is connected by RL1 in the control interface case 5 and RL2, realizes the common bus mutual conduction of program control matrix switch 12 of multichannel and big current-programmed matrix switch 4.Thereby the digital multimeter in the test macro just can be by the common bus that the is connected in series together electric function parameter characteristic to the output port of tested ECU controller 6.
Second step: the tested port-action of controlling tested ECU
The 3rd step: data measure and gather
The 4th step: data computation and judge
The data message that central control computer 1 will obtain from the measurement equipment of test macro carries out computing, data after the processing can directly reflect the electric function parameter characteristic of the inner tested circuit of tested ECU controller, and data after handling and the measurement limit value that is stored in the computing machine in advance compared, whether pass through thereby pass judgment on test.
The 5th step: test macro resets
After the test of finishing an above-mentioned passage, central control computer 1 resets the access passage in the program control matrix switch of multichannel, provides ready for starting next step test.
Above testing procedure can be realized the test to tested ECU controller output port, in fact, and the port of the other types of tested ECU controller, as: digital input port, analog input port, frequency output terminal mouth.All be to realize by similar testing procedure, just insert different measurement equipments and different test channel and loads.
In conjunction with the accompanying drawings the present invention has been carried out exemplary description above; obviously specific implementation of the present invention is not subjected to the restriction of aforesaid way; as long as the various improvement of having adopted method design of the present invention and technical scheme to carry out; or directly apply to other occasion without improvement, all within protection scope of the present invention.
Claims (16)
1, a kind of functional parameter test macro of automobile electronic controller, it is characterized in that, comprise central controller and the program control matrix switch of a plurality of multichannel, described central controller is controlled the program control matrix switch of described a plurality of multichannels, and the program control matrix switch of described a plurality of multichannels is connected mutually by common bus.
2, the functional parameter test macro of automobile electronic controller as claimed in claim 1 is characterized in that, described central controller is a central control computer, and the program control matrix switch of described multichannel is three.
3, the functional parameter test macro of automobile electronic controller as claimed in claim 2, it is characterized in that, three program control matrix switches of multichannel are: the program control matrix switch of first multichannel that vertical line links to each other with instrument port in the test macro, the program control matrix switch of second multichannel that vertical line links to each other with tested electronic controller ECU input port, the program control matrix switch of big current multi-way that vertical line links to each other with tested electronic controller ECU digital output port.
4, the functional parameter test macro of automobile electronic controller as claimed in claim 3 is characterized in that, the positive pole of the horizontal common bus of three program control matrix switches of multichannel and negative pole are respectively by two program control relay mutual conduction.
5, as the functional parameter test macro of each described automobile electronic controller among the claim 2-4, it is characterized in that, also comprise interface box, interface box built-in testing system and tested electronic controller be electrically connected passage, and/or program control relay, and/or power termination etc., the contactor in the central control computer control interface case.
6, as the functional parameter test macro of each described automobile electronic controller among the claim 2-4, it is characterized in that, comprise various data acquisition control integrated circuit boards on the described central control computer.
7, the functional parameter test macro of automobile electronic controller as claimed in claim 6 is characterized in that, described data acquisition control integrated circuit board comprises analog quantity output integrated circuit board, digital collection multimeter, CAN address card, digital input and output integrated circuit board.
8, as the functional parameter test macro of claim 3 or 4 or 6 described automobile electronic controllers, it is characterized in that, under central control computer control, the common bus mutual conduction of three program control matrix switches of multichannel, wherein, big current multi-way matrix switch or the program control matrix switch of multichannel can be linked into the corresponding port of tested ECU on the common bus, and/or the program control matrix switch of multichannel can be linked into corresponding measurement equipment on the common bus, and/or the big program control matrix switch of current multi-way can be linked into corresponding external analog load on the common bus.
9, a kind of method of testing of the functional parameter test macro as automobile electronic controller as described in the claim 1-8 is characterized in that, uses the structure of above-mentioned test macro can carry out coupling between following different electronic controller ECU and the test macro; The vertical line of the program control matrix switch of multichannel is connected respectively on the respective signal pin of different controllers; Central controller inside is called corresponding modification with the pairing signal name of demultiplexing matrix switch vertical line; On program, the test limit value of each signal correspondence is made amendment.
10, the method for testing of the functional parameter test macro of automobile electronic controller as claimed in claim 9 is characterized in that testing procedure is as follows
(1) sets up test channel;
(2) the tested port-action of the tested electronic controller ECU of control;
(3) data measure and gather;
(4) data computation and judge;
(5) test macro resets.
11, the method for testing of the functional parameter test macro of automobile electronic controller as claimed in claim 10 is characterized in that, step (1) specifically comprises the steps:
1) central control computer is linked into the corresponding port of tested electronic controller ECU on the common bus by controlling big current multi-way matrix switch or the program control matrix switch of multichannel;
2) central control computer is controlled the program control matrix switch of big current multi-way corresponding external analog load is linked on the common bus;
3) central control computer control is the common bus mutual conduction of three matrix switches.
12, the method for testing of the functional parameter test macro of automobile electronic controller as claimed in claim 10 is characterized in that, in the step (2), central control computer is controlled the tested port-action of tested electronic controller ECU by the CAN communication network.
13, the method for testing of the functional parameter test macro of automobile electronic controller as claimed in claim 10, it is characterized in that, in the step (3), central control computer is measured the correlation parameter in the test loop by the integrated circuit board in the computing machine, and test data is imported to central control computer.
14, the method for testing of the functional parameter test macro of automobile electronic controller as claimed in claim 10, it is characterized in that, in the step (4), central control computer carries out corresponding calculated with the data that collect to be handled, and compare, thereby determine the functional parameter state of internal hardware circuit of the tested port of tested electronic controller ECU with the judgement limit value that is stored in computer-internal in advance.
15, the method for testing of the functional parameter test macro of automobile electronic controller as claimed in claim 10, it is characterized in that, in the step (5), after finishing the test of an above-mentioned passage, central control computer resets the access passage in the program control matrix switch of multichannel, provides ready for starting next step test.
16, as the method for testing of the functional parameter test macro of each described automobile electronic controller among the claim 10-15, it is characterized in that described tested port can be digital input port, analog input port, frequency output terminal mouth.
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| CN201210253Y (en) * | 2008-06-18 | 2009-03-18 | 北京经纬恒润科技有限公司 | Test device for testing automobile electronic controller |
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| CN102608990A (en) * | 2012-02-20 | 2012-07-25 | 浙江大学 | ECU (Electronic Control Unit) actuator control signal fault injection device for engine HILS (Hardware-In-the-Loop Simulation) system |
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