CN204028693U - A kind of function detection device of automobile electronic fuel oil jet system electronic control unit - Google Patents
A kind of function detection device of automobile electronic fuel oil jet system electronic control unit Download PDFInfo
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- CN204028693U CN204028693U CN201420412418.9U CN201420412418U CN204028693U CN 204028693 U CN204028693 U CN 204028693U CN 201420412418 U CN201420412418 U CN 201420412418U CN 204028693 U CN204028693 U CN 204028693U
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Abstract
The utility model discloses a kind of function detection device of automobile electronic fuel oil jet system electronic control unit, relate to signal imitation and the detection technique of automobile electronic fuel oil jet system electronic control unit.The structure of this device is signal imitation unit, signal adapter, fault injector are connected successively with ECU, sends the sensor signal of simulation to ECU; Signal adapter respectively with simulation executing and external true actuator can be selected to be connected, make ECU be operated in specific environment; Signal adapter is connected with control module with input, the parameter that the display of LABVIEW virtual instrument man-machine interface calculates and ECU duty.The utility model facilitates signalling channel to expand and ECU direct fault location, takes into account ECU development function; There is the database functions such as the storage of ECU information, inquiry, facilitate product to follow the trail of; It is a kind of ECU Function detection scheme of low cost.
Description
Technical field
The utility model relates to signal imitation and the detection technique of automobile electronic fuel oil jet system electronic control unit (being called for short ECU), particularly relates to a kind of function detection device 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 checking, be the problem that Automobile Electronic Industry needs to solve.
Traditional sensing techniques has automatic optics inspection (AOI) and automatic on-line to detect (ICT), and AOI can detect wrong material, leak material and welding point defect etc.; ICT can carry out Function detection to the passive devices such as resistance, electric capacity and diode and the chip such as amplifier and power supply.A large amount of making sheet and welding mistake can be got rid of 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 the workload of Product checking in order to ensure ECU, in the urgent need to a kind of automobile ECU function detection device.
ECU is adopted to replace fuel feeding and the ignition process that traditional mechanical system (as carburetor) controls engine.The signals such as the rotating speed of the temperature of engine, air-fuel ratio, throttle situation, engine, load, crank position and traveling state of vehicle are inputted ECU by various sensor by automobile electronic fuel oil jet system, ECU is according to these signal parameters, calculate and control distributive value, oil injection time and the time of ignition required for each cylinder of engine, guaranteeing that engine and actuator always work in optimum condition.
Summary of the invention
The purpose of this utility model is just the shortcoming and defect overcoming prior art existence, provides a kind of function detection device of automobile electronic fuel oil jet system electronic control unit.
The technical solution adopted in the utility model 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 are connected successively with ECU, send the sensor signal of simulation to ECU;
Signal adapter respectively with simulation executing and external true actuator can be selected 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 and data processor are connected with LABVIEW virtual instrument man-machine interface respectively, the parameter that the display of LABVIEW virtual instrument man-machine interface calculates and ECU duty;
LABVIEW virtual instrument man-machine interface and DataBase combining;
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, read data stream when ECU works and diagnostic trouble code, in conjunction with the simulation executing working condition detected, judge that whether the function of ECU is normal; Its key step is as follows:
1. parameter during ECU working condition is set;
2. control signal analogue unit makes ECU be operated in the automotive 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 utility model has following advantages and good effect:
1. facilitate signalling channel to expand and ECU direct fault location, take into account ECU development function;
2. there is the database functions such as the storage of ECU information, inquiry, facilitate product to follow the trail of;
In a word, the utility model is a kind of ECU Function detection scheme of low cost, can be also cost-saving in developing ECU manufacturer.
Accompanying drawing explanation
Fig. 1 is the block diagram of this device;
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 imitation 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-external true actuator can be selected.
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 external true actuator 300 can be selected to be connected, the executive signal that ECU100 exports is sent to simulation executing 240 and can select external true actuator 300 by signal adapter 220, 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 and data processor 253 are connected with LABVIEW virtual instrument man-machine interface 255 respectively, the parameter that the display of LABVIEW virtual instrument man-machine interface 255 calculates and ECU duty;
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:
The sensor signal of simulation is given ECU100 by signal adapter 220 and fault injector 210 by signal imitation unit 230, output executive signal during 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, the parameter of the data collected and calculating is given LABVIEW virtual instrument man-machine interface 255 again by data collecting card 252 and data processor 253, the parameter that the display of LABVIEW virtual instrument man-machine interface 255 calculates and ECU duty, LABVIEW virtual instrument man-machine interface 255 realizes the functions such as the storage of ECU information and inquiry by database 254, simultaneously by the duty of control data capture card 252 control signal analogue unit 230.
Two, apparatus function block
1、ECU100
ECU100 is provided by ECU producer, and this device can the ECU of compatible different model.By fault injector 210 and signal adapter 220, can adapt to the multiple pin configurations of ECU, the ECU that the sense channel that device is reserved can adapt to different model detects and maintenance.
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 providing sensor failure signals, 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 transferring to the ECU signal of different model and stitch definition.
(3) signal imitation unit 230
Signal imitation unit 230 main analog automobile electronic fuel oil jet system working sensor state, comprising:
1. low-speed voltage signal imitation sensor 231
The functional part of low-speed voltage signal imitation sensor 231 to be a kind of modulating output be low-speed voltage signal transducer duty, as analog temperature sensor, pressure transducer and throttle position sensor etc.
2. frequency and duty cycle signals analog sensor 232
The functional part of frequency and duty cycle signals analog sensor 232 to be a kind of modulating output be 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 a kind of functional parts of simulating ECU actuator duty, as relay, idle motors, snifting valve and fuel injector etc.
(5) input and control module 250
The functional part that input and control module 250 are a kind of main settling signal collections, parameter calculates display, ECU information stores and controls, comprising:
1. signals collecting converter 251
Signals collecting converter 251 is a kind of general functional parts, 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 changing, the data collected are sent to LABVIEW virtual instrument man-machine interface 255 by signals collecting converter 251;
Data collecting card 252 adopts Yan Hua company PCI 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, the signal after changing is obtained 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 controller, 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, by the LABVIEW programming of America NI company, provides control and display interface, and complete automatically detect and manually detect ECU, mutual with database, show the function such as engine and ECU duty.
3, external true actuator 300 can be selected
External true actuator 300 can be selected to comprise the actuating equipment of ECU as ignition coil, snifting valve, switch relay and idle motors etc.
Claims (2)
1. a function detection device for automobile electronic fuel oil jet system electronic control unit, is characterized in that:
Comprise target ECU(100) and external true actuator (300) can be selected;
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;
Signal adapter (220) is respectively with simulation executing (240) with external true actuator (300) can be selected to be connected;
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, and data collecting card (252) is connected with LABVIEW virtual instrument man-machine interface (255) respectively with data processor (253);
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 according to claim 1, it is characterized in that:
Signal imitation unit (230) main analog automobile electronic fuel oil jet system working sensor state, comprising: low-speed voltage signal imitation 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).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420412418.9U CN204028693U (en) | 2014-07-24 | 2014-07-24 | A kind of function detection device of automobile electronic fuel oil jet system electronic control unit |
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| CN201420412418.9U CN204028693U (en) | 2014-07-24 | 2014-07-24 | A kind of function detection device of automobile electronic fuel oil jet system electronic control unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281739A (en) * | 2018-09-28 | 2019-01-29 | 潍柴动力股份有限公司 | A kind of Wiring detection method and detection device |
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2014
- 2014-07-24 CN CN201420412418.9U patent/CN204028693U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281739A (en) * | 2018-09-28 | 2019-01-29 | 潍柴动力股份有限公司 | A kind of Wiring detection method and detection device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430048 Hubei city of Wuhan Province East Lake Jinyinhu street water Road No. 8 Patentee after: WUHAN LINGDIAN AUTOMOBILE ELECTRONIC CONTROL SYSTEMCO., LTD. Address before: 430048 Hubei city of Wuhan Province East Lake Jinyinhu street water Road No. 8 Patentee before: Wuhan Ryoden Automotive Electronics Co., Ltd. |