CN104090570A - Function test device for electronic control unit of automobile electronic fuel injection system and method thereof - Google Patents
Function test device for electronic control unit of automobile electronic fuel injection system and method thereof Download PDFInfo
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- CN104090570A CN104090570A CN201410354482.0A CN201410354482A CN104090570A CN 104090570 A CN104090570 A CN 104090570A CN 201410354482 A CN201410354482 A CN 201410354482A CN 104090570 A CN104090570 A CN 104090570A
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Abstract
The invention discloses a function test device for an electronic control unit of an automobile electronic fuel injection system and a method of the function test device, and relates to the signal simulation and detection technology of the electronic control unit of the automobile electronic fuel injection system. According to the structure of the function test device, a signal simulation unit, a signal adapter, a fault injector and the ECU are connected in sequence, and simulated sensor signals are transmitted to the ECU; the signal adapter is connected with a simulation actuator and a real actuator which can be selectively connected externally so that the ECU can work in a specific environment; the signal adapter is connected with a signal detection and control unit, and parameters of calculation and the working state of the ECU are displayed on a LABVIEW human-computer interface. The function test device can carry out automatic testing, and can also carry out manual testing as required; signal channel extension and ECU fault injection are facilitated, and the device also has the ECU development function; the device has the database functions such as storage and query of ECU information, and product tracking is facilitated; according to the scheme, the function test device is low in cost of ECU function tests.
Description
Technical field
The present invention relates to automobile electronic fuel oil jet system electronic control unit signal imitation and the detection technique of (being called for short ECU), relate in particular to a kind of function detection device and method thereof of automobile electronic fuel oil jet system electronic control unit.
Background technology
Along with the development of Automobile Electronic Industry, ECU kind is increasing, and complexity is also more and more higher, how economical, efficiently, accurately and intactly carry out product detection, be the problem that Automobile Electronic Industry need to solve.
Traditional detection technology has automated optical to detect (AOI) and automatic on-line detects (ICT), and AOI can detect wrong material, leak material and welding point defect etc.; ICT can carry out Function detection to chips such as the passive devices such as resistance, electric capacity and diode and amplifier and power supplys.Can get rid of a large amount of making sheet and welding mistake by ICT and AOI.But due to ECU functional complexity, ICT, AOI can not carry out comprehensive Function detection to ECU.Can normally work and reduce in order to ensure ECU the workload that product detects, in the urgent need to a kind of automobile ECU function detection device.
Adopt ECU to replace traditional mechanical system (as carburetor) and come fuel feeding and the ignition process of control engine.Automobile electronic fuel oil jet system is inputted ECU by various sensors by signals such as rotating speed, load, crank position and the traveling state of vehicle of the temperature of engine, air-fuel ratio, throttle situation, engine, ECU is according to these signal parameters, calculate and the needed distributive value of the each cylinder of control engine, oil spout moment and time of ignition, guarantee that engine and actuator always work in optimum condition.
Summary of the invention
Object of the present invention is just to overcome the shortcoming and defect that prior art exists, and a kind of function detection device and method thereof of automobile electronic fuel oil jet system electronic control unit is provided.
The technical solution used in the present invention is as follows:
1, pick-up unit
This device comprises target ECU and can select external true actuator;
Be provided with ECU function detection equipment;
ECU checkout equipment comprises fault injector, signal adapter, signal imitation unit, simulation executing, input and control module;
Its annexation is:
Signal imitation unit, signal adapter, fault injector and ECU are connected successively, send the sensor signal of simulation to ECU;
Signal adapter respectively with simulation executing and can select external true actuator to be connected, make ECU be operated in specific environment;
Signal adapter is connected with control module with input, that is: signal adapter is connected with signals collecting converter, signals collecting converter is connected with data collecting card and data processor respectively, data collecting card is connected with LABVIEW virtual instrument man-machine interface respectively with data processor, and LABVIEW virtual instrument man-machine interface shows parameter and the ECU duty calculated;
LABVIEW virtual instrument man-machine interface is connected with database;
Data collecting card is connected with signal imitation unit.
2, detection method
By control signal analogue unit simulated automotive working sensor, make ECU be operated in specific operation, data stream and diagnostic trouble code while reading ECU work, in conjunction with the simulation executing working condition detecting, judge that whether the function of ECU is normal; Its key step is as follows:
1. the parameter while setting ECU working condition;
2. control signal analogue unit makes ECU be operated in the motor car engine environment of simulation;
3. read ECU working traffic, detect the peripheral simulation executing duty of ECU, judge that whether ECU function is normal;
4. by ECU relevant information write into Databasce.
The present invention has following advantages and good effect:
1. both can automatically detect, also can manually detect as required;
2. facilitate signalling channel expansion and ECU fault to inject, take into account ECU development function;
3. there is the database function such as storage, inquiry of ECU information, facilitate product to follow the trail of;
In a word, the present invention is one ECU Function detection scheme cheaply, also can be in developing ECU manufacturer cost-saving.
Brief description of the drawings
Fig. 1 is the block diagram of this device;
Fig. 2 is the workflow diagram (automatic mode) of this method;
Fig. 3 is the workflow diagram (manual mode) of this method.
In Fig. 1:
100—ECU；
200-ECU function detection equipment,
210-fault injector,
220-signal adapter,
230-signal imitation unit,
231-low speed voltage signal analog sensor,
232-frequency and duty cycle signals analog sensor,
233-bent axle and camshaft analog sensor,
234-oxygen signal and detonation signal analog sensor;
240-simulation executing;
250-input and control module,
251-signals collecting converter,
252-data collecting card,
253-data processor,
254-database,
255-LABVIEW virtual instrument man-machine interface;
300-can select external true actuator.
english to Chinese:
1, ECU:Electronic Control Unit, automobile electronic fuel oil jet system electronic control unit.
2, LABVIEW: be the graphical programming language of NI company, can facilitate slip-stick artist to write virtual instrument man-machine interface.
Embodiment
Describe in detail below in conjunction with drawings and Examples:
One, device is overall
As Fig. 1, this device comprises target ECU100 and can select external true actuator 300;
Be provided with ECU function detection equipment 200;
ECU checkout equipment 200 comprises fault injector 210, signal adapter 220, signal imitation unit 230, simulation executing 240, input and control module 250;
Its annexation is:
Signal imitation unit 230, signal adapter 220, fault injector 210 are connected successively with ECU100, send the sensor signal of simulation to ECU100;
Signal adapter 220 is respectively with simulation executing 240 with can select external true actuator 300 to be connected, signal adapter 220 sends the executive signal of ECU100 output simulation executing 240 to and can select external true actuator 300, makes ECU100 be operated in specific environment;
Signal adapter 220 is connected with control module 250 with input, that is: signal adapter 220 is connected with signals collecting converter 251, signals collecting converter 251 is connected with data collecting card 252 and data processor 253 respectively, data collecting card 252 is connected with LABVIEW virtual instrument man-machine interface 255 respectively with data processor 253, and LABVIEW virtual instrument man-machine interface 255 shows parameter and the ECU duty calculated;
LABVIEW virtual instrument man-machine interface 255 is connected with database 254;
Data collecting card 252 is connected with signal imitation unit 230.
Its principle of work is:
Signal imitation unit 230 is given ECU100 by the sensor signal of simulation by signal adapter 220 and fault injector 210, output executive signal when ECU100 work is given simulation executing 240 by fault injector 210 and signal adapter 220 and maybe can be selected external true actuator 300, makes ECU100 be operated in specific environment;
Signals collecting converter 251 sends data collecting card 252 and data processor 253 to the signal after conversion, LABVIEW virtual instrument man-machine interface 255 given the parameter of the data that collect and calculating again by data collecting card 252 and data processor 253, LABVIEW virtual instrument man-machine interface 255 shows parameter and the ECU duty calculated, LABVIEW virtual instrument man-machine interface 255 realizes the functions such as the storage of ECU information and inquiry by database 254, simultaneously by controlling the duty of data collecting card 252 control signal analogue units 230.
Two, apparatus function piece
1、ECU100
ECU100 is provided by ECU producer, the ECU that this device can compatible different model.By fault injector 210 and signal adapter 220, can adapt to the multiple pin configurations of ECU, install ECU detection and maintenance that reserved sense channel can adapt to different model.
2, ECU checkout equipment 200
1) outfit of equipment
ECU checkout equipment 200 comprises fault injector 210, signal adapter 220, signal imitation unit 230, simulation executing 240 and input and control module 250.
2) functions of the equipments parts
(1) fault injector 210
Fault injector 210 is a kind of functional circuits that sensor fault signal is provided, as shorted to earth, to the ECU such as power supply short circuit, open circuit wiring and logic error.
(2) signal adapter 220
Signal adapter 220 is a kind of functional parts for the ECU signal of different model and stitch definition is transferred.
(3) signal imitation unit 230
The main simulated automotive electric injection system working sensor state in signal imitation unit 230, comprising:
1. low speed voltage signal analog sensor 231
Low speed voltage signal analog sensor 231 is functional parts that a kind of simulation is output as low speed voltage signal sensor duty, as analog temperature sensor, pressure transducer and throttle position sensor etc.
2. frequency and duty cycle signals analog sensor 232
Frequency and duty cycle signals analog sensor 232 are functional parts that a kind of simulation is output as frequency and duty cycle signals working sensor state, as simulation speed probe.
3. bent axle and camshaft analog sensor 233
Bent axle and camshaft analog sensor 233 are functional parts of a kind of simulated engine crankshaft rotational speed sensor and camshaft speed working sensor state.
4. oxygen signal and detonation signal analog sensor 234
Oxygen signal and detonation signal analog sensor 234 are functional parts of a kind of simulated engine lambda sensor and detonation sensor duty.
(4) simulation executing 240
Simulation executing 240 is functional parts of a kind of ECU of simulation actuator duty, as relay, idle motors, snifting valve and fuel injector etc.
(5) input and control module 250
Input and control module 250 are functional parts of a kind of main settling signal collection, calculation of parameter demonstration, the storage of ECU information and control, comprising:
1. signals collecting converter 251
Signals collecting converter 251 is a kind of general functional parts, and detection signal is converted to data collecting card 252 and the manageable signal of data processor 253.
2. data collecting card 252
Data collecting card 252 is a kind of general functional parts, obtains the signal after conversion by signals collecting converter 251, and the data that collect are sent to LABVIEW virtual instrument man-machine interface 255;
Data collecting card 252 adopts the PCI of Yan Hua company series capture card, capture card has the functions such as multi-analog output, digital output, arbitrary signal output, measures and switching signal control for general signals such as ECU low-frequency voltage signal, switching value, square-wave signal frequency measurements.
3. data processor 253
Data processor 253 is a kind of general functional parts, obtain the signal after conversion by signals collecting converter 251, calculation engine operational factor, as engine parameters such as ignition timing, ignition advance angle, ignition closed angle, bent axle injection timing and fuel injection pulsewidths, then give LABVIEW virtual instrument man-machine interface 255;
Data processor 253 adopts MICROCHIP company 16 position digital signal controllers, and program language is C language.
4. database 254
Database 254 is a kind of general functional parts, adopt free ACCESS database, there is the tracking of ECU serial number, the amendment of ECU detected parameters and preserve, automatically record testing staff's job number and write the functions such as self-defined information to ECU, facilitate ECU to follow the tracks of and keep in repair.
5. LABVIEW virtual instrument man-machine interface 255
LABVIEW virtual instrument man-machine interface 255 is by the LABVIEW programming of America NI company, provide and control and display interface, and complete automatic detection and manually detect ECU, mutual with database, show the functions such as engine and ECU duty.
3, can select external true actuator 300
Can select actuating equipment that external true actuator 300 comprises ECU as ignition coil, snifting valve, switch relay and idle motors etc.
Three, detection method
Detection method has automatic testing method and 2 kinds of manual detection methods.
1, automatic testing method
As Fig. 2, automatic testing method comprises the following steps:
1. control signal analogue unit 230, sets working environment, opens ignition switch-21;
2. calculate ECU100 running parameter by data processor 253, reading data flow and diagnostic trouble code-22;
3. automatically adjust the state of signal imitation unit 230 according to the steering logic of ECU100, detect working condition-23 under the different operating modes of ECU100;
4. judge that whether ECU100 operation is normal-24, is to enter step 5., otherwise enters step 5. through inquiry failure code with after showing failure message-27;
The relevant information of 5. storing ECU100 is in database-25;
6. close ignition switch-26.
2, manual detection method
As Fig. 3, manually detection method comprises the following steps:
A, control signal analogue unit 230, set working environment, opens ignition switch-31;
B, relevant information-32 of calculating operational factor and reading ECU100 by data processor 253
C, by fault injector 210 inject fault-33, by data processor 253 data queries streams-34 with set working environment-35 by LABVIEW virtual instrument man-machine interface 255 control signal analogue units;
Ruuning situation-36 of D, observation ECU100;
The relevant information of E, storage ECU100 is in database 254-37;
F, close ignition switch-38.
Claims (4)
1. a function detection device for automobile electronic fuel oil jet system electronic control unit, is characterized in that:
Comprise target ECU(100) and can select external true actuator (300);
Be provided with ECU function detection equipment (200);
ECU checkout equipment (200) comprises fault injector (210), signal adapter (220), signal imitation unit (230), simulation executing (240), input and control module (250);
Its annexation is:
Signal imitation unit (230), signal adapter (220), fault injector (210) and ECU(100) be connected successively, send the sensor signal of simulation to ECU(100);
Signal adapter (220), respectively with simulation executing (240) with can select external true actuator (300) to be connected, makes ECU(100) be operated in specific environment;
Signal adapter (220) is connected with control module (250) with input, that is: signal adapter (220) is connected with signals collecting converter (251), signals collecting converter (251) is connected with data collecting card (252) and data processor (253) respectively, data collecting card (252) is connected with LABVIEW virtual instrument man-machine interface (255) respectively with data processor (253), and LABVIEW virtual instrument man-machine interface (255) shows parameter and the ECU duty calculated;
LABVIEW virtual instrument man-machine interface (255) is connected with database (254);
Data collecting card (252) is connected with signal imitation unit (230).
2. by the function detection device of a kind of automobile electronic fuel oil jet system electronic control unit claimed in claim 1, it is characterized in that:
The main simulated automotive electric injection system working sensor state in signal imitation unit (230), comprising: low speed voltage signal analog sensor (231), frequency and duty cycle signals analog sensor (232), bent axle and camshaft analog sensor (233) and oxygen signal and detonation signal analog sensor (234).
3. the detection method of utilizing function detection device described in claim 1, is characterized in that:
By control signal analogue unit simulated automotive working sensor, make ECU be operated in specific operation, data stream and diagnostic trouble code while reading ECU work, in conjunction with the simulation executing working condition detecting, judge that whether the function of ECU is normal; Its key step is as follows:
1. the parameter while setting ECU working condition;
2. control signal analogue unit makes ECU be operated in the motor car engine environment of simulation;
3. read ECU working traffic, detect the peripheral simulation executing duty of ECU, judge that whether ECU function is normal;
4. by ECU relevant information write into Databasce.
4. by detection method claimed in claim 3, it is characterized in that detection method has automatic testing method and 2 kinds of manual detection methods:
Automatic testing method comprises the following steps:
1. control signal analogue unit (230), sets working environment, opens ignition switch (21);
2. calculate ECU(100 by data processor (253)) running parameter, reading data flow and diagnostic trouble code (22);
3. according to ECU(100) steering logic automatically adjust the state of signal imitation unit (230), detect ECU(100) working condition (23) under different operating modes;
4. judge ECU(100) whether normally (24) of operation, be to enter step 5., otherwise enter step 5. through inquiry failure code with after showing failure message (27);
5. store ECU(100) relevant information (25) in database;
6. close ignition switch (26);
Manually detection method comprises the following steps:
A, control signal analogue unit (230), set working environment, opens ignition switch (31);
B, calculate operational factor and read ECU(100 by data processor (253)) relevant information (32)
C, inject fault (33), set working environment (35) by data processor (253) data query stream (34) with by LABVIEW virtual instrument man-machine interface (255) control signal analogue unit by fault injector (210);
D, observe ECU(100) ruuning situation (36);
E, storage ECU(100) relevant information to (37) in database (254);
F, close ignition switch (38).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410354482.0A CN104090570A (en) | 2014-07-24 | 2014-07-24 | Function test device for electronic control unit of automobile electronic fuel injection system and method thereof |
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| CN201410354482.0A CN104090570A (en) | 2014-07-24 | 2014-07-24 | Function test device for electronic control unit of automobile electronic fuel injection system and method thereof |
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| CN201410354482.0A Pending CN104090570A (en) | 2014-07-24 | 2014-07-24 | Function test device for electronic control unit of automobile electronic fuel injection system and method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104635726A (en) * | 2015-03-11 | 2015-05-20 | 北京博曼迪汽车科技有限公司 | Method and device for testing electronic control unit of engine |
| CN105673223A (en) * | 2014-12-04 | 2016-06-15 | 现代自动车株式会社 | Method for preventing engine stall using virtual crank signal |
| CN106249070A (en) * | 2016-07-12 | 2016-12-21 | 北京长城华冠汽车科技股份有限公司 | A kind of test system and method for electric automobile heat management pipeline |
| CN104571094B (en) * | 2015-01-08 | 2018-05-08 | 北京动力机械研究所 | Detection device for engine oil control system |
| CN111026778A (en) * | 2019-12-16 | 2020-04-17 | 华南理工大学广州学院 | Data searching method of multifunctional engraving machine based on LabVIEW |
| CN113638813A (en) * | 2021-08-10 | 2021-11-12 | 武汉理工大学 | Detection device and method for automobile ECU recycled part |
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| CN201780506U (en) * | 2010-06-28 | 2011-03-30 | 北京经纬恒润科技有限公司 | Test equipment for testing electronic controller |
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2014
- 2014-07-24 CN CN201410354482.0A patent/CN104090570A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201780506U (en) * | 2010-06-28 | 2011-03-30 | 北京经纬恒润科技有限公司 | Test equipment for testing electronic controller |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673223A (en) * | 2014-12-04 | 2016-06-15 | 现代自动车株式会社 | Method for preventing engine stall using virtual crank signal |
| CN104571094B (en) * | 2015-01-08 | 2018-05-08 | 北京动力机械研究所 | Detection device for engine oil control system |
| CN104635726A (en) * | 2015-03-11 | 2015-05-20 | 北京博曼迪汽车科技有限公司 | Method and device for testing electronic control unit of engine |
| CN106249070A (en) * | 2016-07-12 | 2016-12-21 | 北京长城华冠汽车科技股份有限公司 | A kind of test system and method for electric automobile heat management pipeline |
| CN106249070B (en) * | 2016-07-12 | 2020-03-27 | 北京长城华冠汽车科技股份有限公司 | System and method for testing electric vehicle heat management pipeline |
| CN111026778A (en) * | 2019-12-16 | 2020-04-17 | 华南理工大学广州学院 | Data searching method of multifunctional engraving machine based on LabVIEW |
| CN111026778B (en) * | 2019-12-16 | 2023-05-30 | 华南理工大学广州学院 | Data searching method of multifunctional engraving machine based on LabVIEW |
| CN113638813A (en) * | 2021-08-10 | 2021-11-12 | 武汉理工大学 | Detection device and method for automobile ECU recycled part |
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Application publication date: 20141008 |