CN201266321Y - Detection device for electric control system - Google Patents
Detection device for electric control system Download PDFInfo
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- CN201266321Y CN201266321Y CNU2008201471011U CN200820147101U CN201266321Y CN 201266321 Y CN201266321 Y CN 201266321Y CN U2008201471011 U CNU2008201471011 U CN U2008201471011U CN 200820147101 U CN200820147101 U CN 200820147101U CN 201266321 Y CN201266321 Y CN 201266321Y
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Abstract
The utility model discloses an electric control system detecting device used for detecting the working situation of an electric control system. The electric control system detecting device comprises a CPU module, a human-computer interface module, a power module and an interface module; the CPU module cuts off, conducts or switches the electric connection between an electronic control unit and a peripheral electronic part of the electronic control unit by the interface module, and generates a signal needed by the electric control system to work and/or measures the signal inputted by the electric control system; the interface module is used for transmitting the signal generated by the CPU module to the electric control system and/or transmitting the signal generated by the electric control system to the CPU module; and the human-computer interface module comprises an operation step, operation selection and a detection result used for displaying or indicating the CPU module. The electric control system detecting device can quickly and accurately determine the failure position of the electric control system, and achieves the goals of reducing the working intensity of maintaining personnel and improving the working efficiency.
Description
[technical field]
The utility model relates to the electric-control system pick-up unit on transport facility and the engineering machinery, relates in particular to the automobile electric control system pick-up unit.
[background technology]
Automobile, excavator, aircraft, boats and ships, electric motor car and the locomotive, the motor-car that are used for track transport all generally have electric-control system, and as the electric-control system of automobile, its complicated electronic circuit has higher requirement for the auto repair personnel.Because the educational level of present most of direct labor or service worker is low, the auto repair personnel often can not determine abort situation fast, mainly only use following two kinds of methods to locate.
The following Fault Locating Method that the auto repair personnel use in the prior art:
One, substitution method is pulled down the electronic unit that suspect to damage, change one good, if fault disappears, just think that institute's electronic unit that changes damages.This method for maintaining principle is simple, and is also practical, but has defective in operation: so because more consuming time, the consumption power of manual steps.Maintenance such as automobile over-emitting black exhaust fault:
1, consumption power.Normally various electronic units such as cooling-water temperature sensor, throttle sensor, electronic control unit are pulled down one by one, this need at first get at the bottom of the car or open hood etc., just can tear electronic unit open then, if certain the electronic unit installation site on the car is hidden, also need to remove earlier corresponding mechanical part.
The electronic unit that need change after the dismounting replaces, and this will guarantee that the electronic unit of respective model such as sensor replace; And numerous owing to vehicle on the market, the electronic unit of respective model is difficult to look for, and normally looks for the car of a same model to dismantle exchange again, so it is many one times to increase the dismantlement work amount.
2, consuming time.Because the over-emitting black exhaust fault is relevant with a plurality of sensors, the vehicle electronic control unit internal electronics is damaged or the internal data entanglement also can produce the over-emitting black exhaust fault, and the maintenance personal needs replacement one by one, and repeatedly start-ups a car, and often the trouble spot is just found in examination to the end.
3, the vehicle electronic control unit price is higher, most of vehicle is difficult to find the replacement part, even it is the peripheral electron parts that the electronic control unit fault also can be checked earlier, replace coupled that the maintenance personal suspects, as cooling-water temperature sensor, throttle sensor etc., in the time of all can not solving to the end, vehicle electronic control unit just can replace.And some fault is very big because of the possibility that vehicle electronic control unit causes, though the peripheral electron parts are influential, but possibility is little, and then first detected electrons control module is only correct.
Two, adopt and to transfer diagnostic trouble code and come the failure judgement position, its principle is that electronic control unit carries out self check, the form of detected fault with digital code is stored in the electronic control unit, operational failure sign indicating number demoder sends reading command then, transmit to it by electronic control unit, receive and resolve by demoder, know fault type thus.
This kind method shortcoming is as follows:
1, must guarantee that at first detecting instrument and electronic control unit line are normal, because demoder is to carry out communication by diagnostic plug and electronic control unit, so this method can only just work under electronic control unit non-fault and the normal situation of communication line.Such as automobile over-emitting black exhaust fault, if communication line disconnects, then demoder can't reading of data, can't determine abort situation; If communication line is normal, the entanglement of electronic control unit internal data, then the data that read of demoder not to or misdirection, mislead the maintenance personal on the contrary easily; If the stitch that electronic control unit is electrically connected with cooling-water temperature sensor is inner and its circuit disconnection at electronic control unit, this belongs to the fault of electronic control unit, but demoder can be pointed out the temperature sensor fault, causes so accurately determining its abort situation.
2, often can only when electronic control unit is working properly, probably learn abort situation, but concrete inadequately, only provide a direction, the personnel that still need repairing further make a definite diagnosis by rule of thumb, as prompting air-conditioning system fault.And a lot of vehicles, because electronic control unit is not worked as yet fully, and data can't obtain, the fuel injection pulse signal during such as starting is wide or narrow also just can't to be detected in starting process.The maintenance personal still needs pick-up unit and electronic unit directly be electrically connected and fetches detection and just can learn more accurate, concrete abort situation like this.
Prior art directly and electronic control unit and the peripheral electron parts detecting instrument that fetches detection that is electrically connected generally have two kinds:
1. sensor, actuator detecting instrument are used for the detection of sensor, actuator.Sensor, the actuator that need detect to be disconnected from primary circuit when its shortcoming is detection, detecting instrument is inserted measure again;
2. the electronic control unit monitor station is used for the detected electrons control module.Need when its shortcoming is detection electronic control unit and peripheral electron parts are disconnected, could detect with monitor station.
Above-mentioned two kinds of detecting instruments will detect electronic control unit and peripheral electron parts and can only detect one earlier, change again other instrument detecting its two; Perhaps same instrument has both measuring abilities simultaneously, also needs to change the plug insertion but surveyed one, or connects other port, or electronic unit is pulled down, and detects etc. again, promptly changes the electrical connection of detecting instrument and/or the electrical connection on former fare road.
The detecting instrument of prior art simulation electronic control module or peripheral electron parts generally also has two kinds:
1. sensor, actuator analog meter are used for the simulation of sensor, actuator.Sensor on the car, actuator and electric-control system to be disconnected when its shortcoming is simulation, again detecting instrument be inserted, simulate the parts that pull out with detecting instrument.
2. the electronic control unit analog meter is used for the electric signal that the sub-control module of analog electrical output sends, with actuate actuators etc.The primary electron control module to be disconnected when its shortcoming is simulation, again detecting instrument be inserted, simulate the electronic control unit that pulls out with detecting instrument.
Above-mentioned two kinds of analog meters will be simulated also electronic control unit and peripheral electron parts and can only be simulated one earlier, change again other instrument simulate its two; Perhaps same analog meter has both analog functuions simultaneously, but simulated certain some electronic unit and also needed to change the plug insertion, or connect other port, or electronic unit pulled down, simulate other electronic unit etc. again, promptly change the electrical connection of analog meter and/or the electrical connection on former fare road.
The detecting instrument of above-mentioned electric-control system or analog meter be both detected electrons control module peripheral electron parts under the situation of not changing electrical connection, again the detected electrons control module; Also be both simulation electronic control module peripheral electron parts, simulation electronic control module again.
In sum, press for a kind of pick-up unit and detection method at present, can quicker, the abort situation when judging electric-controlled system fault more accurately, promptly quicker, judge it is electronic control unit peripheral electron unit failure more accurately, or the electronic control unit fault.If which electronic unit fault electronic control unit peripheral electron unit failure is again, reach the purpose that reduces maintenance personal's labour intensity and increase work efficiency.
[utility model content]
The technical problems to be solved in the utility model is to avoid above-mentioned the deficiencies in the prior art part and a kind of electric-control system pick-up unit is provided, in order to reduce manually-operated as far as possible, and can finish electronic control unit, the electric parameter measurement of peripheral electron parts, parts simulation and automatic analysis and judgment, fast, determine the abort situation of electric-control system exactly, promptly determine it is electronic control unit peripheral electron unit failure, or electronic control unit fault, if electronic control unit peripheral electron unit failure, be again which electronic unit fault, reach the purpose that reduces maintenance personal's labour intensity and increase work efficiency.
The technical scheme that the utility model solve the technical problem employing is:
A kind of electric-control system pick-up unit is provided, in order to detect the working condition of electric-control system, comprises CPU module, human-computer interface module, supply with the power module and the interface module of each module operating voltage; Described interface module comprises respectively electronic control unit electrical interface and two the suitable electrical interfaces of wire harness electrical interface with described electric-control system; Described CPU module is disconnected described electronic control unit, connected or is switched with being electrically connected of described electronic control unit peripheral electron parts by described interface module, and produces described electric-control system and carry out the signal of need of work and/or measure signal by described electric-control system input; Described interface module is used for sending the signal that described CPU module produces to described electric-control system and/or signal that described electric-control system is produced sends described CPU module to; Described human-computer interface module comprises operation steps, operation selection and the testing result that is used to show or indicate described CPU module.
Compare with prior art, the beneficial effect of the utility model electric-control system pick-up unit is:
Because with this pick-up unit one termination electronic control unit, one termination electronic control unit peripheral electron parts, this pick-up unit inserts the back and need not change under the situation that external electric connects, and comprises not dismantling electronic unit, not plug plug, do not change access way such as pick-up unit, also not needing to use supplementary instruments such as multimeter or oscillograph in addition.This pick-up unit not only can the detected electrons control module electrical quantity, electrical quantity that also can detected electrons control module peripheral electron parts; This pick-up unit not only can the simulation electronic control module electrical quantity, comprise signal, voltage, waveform etc., can also be linked in the electronic control unit by simulation electronic control module peripheral electron parts.
Use this pick-up unit can reduce manually-operated as far as possible, and electric parameter measurement, the parts that can finish electronic control unit, electronic control unit peripheral electron parts are simulated and automatic analysis and judgment, and determine the abort situation of this electric-control system quickly and accurately, promptly determine it is the fault of electronic control unit peripheral electron parts, or the fault of electronic control unit, if the fault of electronic control unit peripheral electron parts, be again the fault of which electronic unit, reach the purpose that reduces maintenance personal's labour intensity and increase work efficiency.
[description of drawings]
To be the utility model electric-control system pick-up unit be connected " simplification " electric functional-block diagram with electric-control system 100 on the delivery vehicle to Fig. 1;
Fig. 2 is the electric functional-block diagram of described pick-up unit;
Fig. 3 is the front view that described pick-up unit specifically is applied in the electronic control unit electrical interface 115 of this automobile electric control system among the embodiment on the star automobile electric control system in Chang'an;
Fig. 4 is the front view of the electronic control unit peripheral electron parts 120 wire harness electrical interfaces 125 of automobile electric control system described in Fig. 3 embodiment;
Fig. 5 is the front view of the suitable electrical interface 510 of interface module 500 and described electronic control unit electrical interface 115 among Fig. 3 embodiment;
Fig. 6 is an interface module described in Fig. 5 embodiment 500 and the front view of the suitable electrical interface 520 of wire harness electrical interface described in Fig. 4 125;
Fig. 7 is the method flow diagram that described pick-up unit detects described electric-control system 100.
[embodiment]
Below in conjunction with each accompanying drawing the utility model is described in further detail.
Referring to Fig. 1 and Fig. 2, the utility model relates to a kind of electric-control system pick-up unit, in order to detecting the working condition of described electric-control system 100, electric-control system 100 comprises electronic control unit 110, the electronic control unit electrical interface 115 that is electrically connected with electronic control unit 110, electronic control unit peripheral electron parts 120, the wire harness electrical interface 125 that is electrically connected with electronic control unit peripheral electron parts 120.Described electric-control system pick-up unit comprises CPU module 200, human-computer interface module 300, supplies with the power module 400 and the interface module 500 of each module operating voltage; Described interface module 500 comprises respectively two electrical interfaces 510,520 suitable with the electronic control unit electrical interface 115 of described electric-control system 100 and wire harness electrical interface 125; Described CPU module 200 is disconnected described electronic control unit 110, connected or is switched with being electrically connected of described electronic control unit peripheral electron parts 120, and produces described electric-control system 100 and carry out the signal of need of work and/or measure signal by described electric-control system 100 inputs; Described interface module 500 is used for sending the signal that described CPU module 200 produces to described electric-control system 100 and/or signal that described electric-control system 100 is produced sends described CPU module 200 to; Described human-computer interface module 300 comprises operation steps, operation selection and the testing result that is used to show or indicate described CPU module 200.
Referring to Fig. 2, above-mentioned CPU module 200 comprises microcontroller 210, on-off circuit 220, testing circuit 250 and electronic unit mimic channel 260, described microcontroller 210 is electrically connected with described on-off circuit 220, testing circuit 250 and electronic unit mimic channel 260 respectively, and described on-off circuit 220 also is electrically connected with described testing circuit 250 and electronic unit mimic channel 260 respectively;
Described microcontroller 210 carries out communication with described on-off circuit 220, and by the instruction of described on-off circuit 220 by this microcontroller 210 described electronic control unit 110 is disconnected, connects or switch with being electrically connected of described electronic control unit peripheral electron parts 120; Described testing circuit 250 cooperates described on-off circuit 220 changeable detections to need each electrical quantity of check point, comprises resistance value, voltage, electric current, frequency and waveform; Described electronic unit mimic channel 260 is used to simulate described electronic control unit peripheral electron parts 120, cooperate described on-off circuit 220 described electronic control unit peripheral electron parts 120 can be broken from primary circuit, simulating these electronic control unit peripheral electron parts 120 again inserts, comprise resistance, voltage and waveform, thereby can simulate in the described electronic control unit peripheral electron parts 120 and comprise cooling-water temperature sensor, pressure transducer and crankshaft position sensor, also can simulate the partial function in the described electronic control unit 110, as send to the drive signal of ignition module.
Referring to Fig. 2, the model of above-mentioned microcontroller 210 is STM32F103; Described on-off circuit 220 comprises the integrated circuit of matrix switch and this matrix switch work of control; Described testing circuit 250 comprises the multimeter special IC of being with communication function, and by described microcontroller 210 control detection circuit 250 test items, these detection data are returned to described microcontroller 210 by described testing circuit 250; Described electronic unit mimic channel 260 comprises potentiometer, as a kind of potentiometer of translator.
Prestoring in model is the internal storage of microcontroller 210 of STM32F103 needs the delivery vehicle that detects such as electric-control system 100 each electrical quantity numerical value just often of automobile, electronic control unit electrical interface 115 each stitch resistance to earth value during as static state, the magnitude of voltage dynamically the time, wire harness electrical interface 125 each stitch resistance to earth value when static, the magnitude of voltage dynamically time the etc.Greatly also can external memorizer if detect data volume.The data that this regime values can be obtained or be gathered normal delivery vehicle such as automobile by open source information are as " up-to-date automobile electronic control unit terminal detects databook " of Liaoning science tech publishing house etc.
Referring to Fig. 2, above-mentioned CPU module 200 also comprises communicating circuit 230, and described communicating circuit 230 is electrically connected with described microcontroller 210 and on-off circuit 220 respectively; Described communicating circuit 230 obtains to comprise failure code, voltage data and the temperature data of described electronic control unit 110 by described on-off circuit 220 and electronic control unit 110 communications, and transmits fill order.Described communicating circuit 230 comprises CAN bus interface integrated circuit and protocol conversion integrated circuit;
Referring to Fig. 2, above-mentioned CPU module 200 also comprises radio receiving transmitting module 240 or network transmission module (not marking among the figure), this radio receiving transmitting module 240 or network transmission module are electrically connected with described microcontroller 210, can carry out data transmission or control with wireless mode with Other Instruments or equipment by this radio receiving transmitting module 240, or can carry out data transmission or control with the mode of network with Other Instruments or equipment by this network transmission module.
Above-mentioned human-computer interface module 300 is chromatic liquid crystal screen or the computers that have touch-screen.
Referring to Fig. 2 to Fig. 6, two electrical interfaces 510,520 of above-mentioned interface module 500 be respectively with the suitable automobile interface female 510 of described electronic control unit 100 electrical interfaces and with the suitable automobile electrical interface male 520 of described electronic control unit peripheral electron parts 120 wire harness electrical interfaces 125.
Above-mentioned CPU module 200, human-computer interface module 300, power module 400 and interface module 500 unifications are integrated on the circuit board or are installed in the same housing, reach effect simple in structure, easy to use.
Above-mentioned power module 400 is batteries, supplies with each module operating voltage by this battery; Perhaps, described power module 400 comprises a power interface and by the external power supply adaptor of this power interface, power supply adaptor be input as civil power, each module operating voltage is supplied with in its output.
Detection method when the utility model electric-control system pick-up unit is used to detect electric-control system is, originally the wire harness electrical interface 125 and the electronic control unit electrical interface 115 that were plugged on the electric-control system 100 that at first will have fault to check together separate, two electrical interfaces 510,520 with the interface module 500 of above-mentioned electric-control system pick-up unit are connected with wire harness electrical interface 125 with the electronic control unit electrical interface 115 of the electric-control system 100 that has fault to check respectively again, then the abort situation of the described electric-control system 100 of preliminary judgement according to the following steps:
1. by the disconnection that is electrically connected of the on-off circuit 220 of described CPU module 200 with electronic control unit 110 with the electronic control unit peripheral electron parts 120 of described electric-control system, each static electrical parameter when the testing circuit 250 of described CPU module 200 detects described electronic control unit 110 and electronic control unit peripheral electron parts 120 no powers respectively, comprise resistance value and on state characteristic, again relatively with each just often corresponding static electrical parameter value, tentatively judged whether fault, this operation can detect and comprise short circuit, open circuit, puncture, be electrically connected the fault of loosening and blowout, if any then being solved, then do not continue next step as having;
2. being electrically connected under the state that has disconnected at the 1. described electronic control unit 110 of above step and electronic control unit peripheral electron parts 120, all electrical quantitys when the testing circuit 250 of described CPU module 200 detects power supply to described electronic control unit 110 and electronic control unit peripheral electron parts 120 respectively, comprise magnitude of voltage and frequency, again relatively with each just often corresponding electrical parameter values, further judged whether fault, if any then being solved, then do not continue next step as having;
3. by the on-off circuit 220 of described CPU module 200 with of the be electrically connected connection of described electronic control unit 110 with electronic control unit peripheral electron parts 120, the testing circuit 250 of described CPU module 200 detects has respectively powered to described electronic control unit 110 and electronic control unit peripheral electron parts 120, but each electrical quantity the when delivery vehicle that assembles this electric-control system 100 does not start as yet, comprise electrical quantitys such as magnitude of voltage and frequency, again relatively with each just often corresponding electrical parameter values, further judge whether to exist fault, if any then being solved, then do not continue next step as having; During such as the electric-control system 100 on the measured automobiles, connect ignition switch and make electronic control unit peripheral electron parts 120 feed power supply, each electrical quantity of this automobile electric control system 100 when automobile does not also start;
4. 3. being electrically connected under the state of having connected of above step with described electronic control unit 110 and electronic control unit peripheral electron parts 120, the testing circuit 250 of described CPU module 200 detects has respectively powered to described electronic control unit 110 and electronic control unit peripheral electron parts 120, and the delivery vehicle of equipping this electric-control system 100 has begun to start, each electrical quantity when different running status, comprise electrical quantitys such as magnitude of voltage, frequency, as acceleration, the deceleration of automobile, the electrical quantity when colluding moving up and down of arm etc. as excavator; With each just often corresponding electrical parameter values relatively, further judge whether to exist fault, again if any then being solved.
The order of above steps is not arranged in order, but detecting successively by the order of above steps is best detection method, and detect the fault of described electric-control system 100 when some steps after,, can not carry out following detection if there is not other fault.
Through above step, can judge the abort situation of described electric-control system 100 parts, faults such as, blown fuse loosening, the output of sensor no signal such as short circuit between the wire harness of automobile, car plug.If can't judge, can use the abort situation of the described electric-control system 100 of substitution method preliminary judgement again according to following steps:
5. by the on-off circuit 220 of described CPU module 200 with of the be electrically connected disconnection of described electronic control unit 110 with electronic control unit peripheral electron parts 120, and by the described electronic control unit 110 of described electronic control unit peripheral electron parts 120 accesses of electronic unit mimic channel 260 simulations of described CPU module 200, whether the described electronic control unit 110 of testing circuit 250 detections by described CPU module 200 has corresponding output signal to comprise fuel injection signal again, ignition signal, the pulse width of idle signal and all signals, and judge whether described electronic control unit 110 is normal, then solved as electronic control unit 110 faults as described in really, as not being then to continue next step;
6. by the on-off circuit 220 of described CPU module 200 with of the be electrically connected connection of described electronic control unit 110 with electronic control unit peripheral electron parts 120, disconnect the connecting circuit of a certain parts and the electronic control unit 110 of described electronic control unit peripheral electron parts 120 more one by one by described on-off circuit 220, then a certain parts of simulating these electronic control unit peripheral electron parts 120 that are disconnected by described electronic unit mimic channel 260 insert primary circuit, if fault disappears, then can judge it is a certain parts damages of these electronic control unit peripheral electron parts 120 substantially.With the resistor-type cooling-water temperature sensor disconnection of the above electric-control system 100 of automobile, insert primary circuit by resistance of described electronic unit mimic channel 260 simulations such as earlier again, if fault disappears, the resistor-type cooling-water temperature sensor damage that then disconnects; If fault still exists, then continue to disconnect the air flowmeter of the above electric-control system 100 of automobile, insert primary circuit by described electronic unit mimic channel 260 simulated air flowmeters again, as then this air flowmeter damage of fault disappearance, so analogize.Continue to disconnect one by one another parts of described electronic control unit peripheral electron parts 120 if fault is not removed, and insert, till finding abort situation by described electronic unit mimic channel 260 simulations;
The order of above steps neither be arranged in order, but detecting successively by the order of above steps is best detection method, and detect the fault of described electric-control system 100 when some steps after,, can not carry out following detection if there is not other fault.
7. the electric signal by 110 outputs of described electronic unit mimic channel 260 simulation electronic control modules inserts actuator, according to replacing back and phenomenon just often relatively, can also judge whether this actuator damages.
In addition, be typically provided with the communication terminal on the electronic control unit electrical interface 115 of described electric-control system 100, the diagnostic trouble code demoder is electrically connected read failure code, voltage data, current data etc. by wire harness electrical interface 125, electronic control unit electrical interface 115 etc. with the communication terminal.Can be by this principle, on the CPU module 200 of this electric-control system pick-up unit, communicating circuit 230 is set, in order to carry out communication with electronic control unit 110, thereby obtain failure code, voltage data and the temperature data of described electronic control unit 110, and transmitting fill order etc., this does not need to change the electrical connection of electric-control system 100 equally.By failure code, voltage data and the temperature data that reads described electronic control unit 110, and the transmission fill order etc., again in conjunction with the testing circuit 250 and the electronic unit mimic channel 260 of CPU module 200, abort situation that can the described electric-control system 100 of more accurate, rapider judgement.During detection, whether first trial inspection electronic control unit 110 has fault, and guarantees that its power supply is normal, carries out communication again, according to failure code that reads and/or data, dwindles sensing range, further detects again.The abort situation of the described electric-control system 100 of preliminary judgement according to the following steps:
1. A by the communicating circuit 230 of described CPU module 200 by described on-off circuit 220 and electronic control unit 110 communications, acquisition comprises failure code, voltage data and the temperature data of described electronic control unit 110, and transmission fill order, and judge the abort situation that described electric-control system 100 is general in view of the above, testing circuit 250 and the electronic unit mimic channel 260 by described CPU module 200 detects and simulates according to the result again.
Referring to Fig. 1, Fig. 2 and Fig. 7, another kind of detection method when the utility model electric-control system pick-up unit is used to detect electric-control system is, get at least two of above-mentioned electric-control system pick-up units, be numbered A, B..., at first wire harness electrical interface 125 and the electronic control unit electrical interface 115 that was plugged on originally on each electric-control system 100 together separated, again with the electrical interface 510 of at least one A number described electric-control system pick-up unit interface module 500,520 respectively with a normal electric-control system 100 in electronic control unit electrical interface 115 be connected with wire harness electrical interface 125, with the electrical interface 510 of another B number described electric-control system pick-up unit interface module 500 at least, 520 have the electronic control unit electrical interface 115 in the electric-control system 100 that fault need check to be connected with wire harness electrical interface 125 with one respectively; But the then abort situation of the described electric-control system 100 of preliminary judgement according to the following steps successively:
1. A number described electric-control system pick-up unit detects some projects or a plurality of project of normal electric-control system 100, and the detection data of this project or a plurality of projects are stored in the CPU module 200 of A number described electric-control system pick-up unit; Greatly also can external memorizer if detect data volume;
2. the CPU module 200 of A number described electric-control system pick-up unit is sent instruction, by the radio receiving transmitting module 240 or the network transmission module communication of its radio receiving transmitting module 240 or network transmission module and B number described electric-control system pick-up unit, require B number described electric-control system pick-up unit also to detect this project or a plurality of project of fault electric-control system 100;
3. B number described electric-control system pick-up unit received this instruction by radio receiving transmitting module 240 or network transmission module, and by its CPU module 200 these instructions of parsing, learn it is the project that will detect which correspondence, B number described electric-control system pick-up unit detects this corresponding project or a plurality of project then, and the project that this is corresponding or the detection data of a plurality of projects are stored in the CPU module 200 of B number described electric-control system pick-up unit;
4. the CPU module 200 of B number described electric-control system pick-up unit is sent and is detected the instruction of finishing, by radio receiving transmitting module 240 or the network transmission module communication of its radio receiving transmitting module 240 or network transmission module to A number described electric-control system pick-up unit, after A number described electric-control system pick-up unit receives this signal, send instruction, require B number described electric-control system pick-up unit to transmit it and detect data to A number described electric-control system pick-up unit;
5. after the detection data that B number described electric-control system pick-up unit of A number described electric-control system pick-up unit reception passed back, also should detect data and be stored in its CPU module 200;
6. A number described electric-control system pick-up unit detects data to two or many and compare, and be undesired as this project or certain some project, terminating operation then, and show by described human-computer interface module 300; As normally, proceed the detection of other project, 6. 1. repeating step arrive, till finding abort situation.
In the above operating process, can add manual control, carry out step by step by operating personnel.
The concrete embodiment that uses of the utility model electric-control system pick-up unit:
Describe with the electric-control system that detects automobile below, vehicle is the automobile of the star in Chang'an, and the electronic control unit of the engine that this automobile adopts is produced by German BOSCH company, is numbered 0261207185.Referring to Fig. 3, this engine electronic control unit 110 is provided with 1 to the 55 electronic control unit electrical interface 115 of totally 55 terminals; Referring to Fig. 4,125 of the wire harness electrical interfaces of suitable with it electronic control unit peripheral electron parts 120 are provided with 1 to 55 totally 55 pin holes, can directly insert between them.Electronic control unit peripheral electron parts 120 are electrically connected with wire harness electrical interface 125 by automotive wire bundle (not marking), be directly to be fastened on the electronic control unit electrical interface 115 at this wire harness electrical interface 125 on the automobile at ordinary times, so electronic control unit peripheral electron parts 120 are electrically connected with electronic control unit 110 by automotive wire bundle, wire harness electrical interface 125 and electronic control unit electrical interface 115.
Referring to Fig. 5 and Fig. 6, two electrical interfaces of the interface module 500 of the used electric-control system pick-up unit of this automobile are automobile interface female 510 and automobile electrical interface male 520, promptly an end adopt with this electronic control unit electrical interface 115 suitable 1 to 55 automobile electrical interface female 510, one ends of totally 55 pin holes adopt 1 to the 55 automobile electrical interface male 520 of totally 55 pin holes suitable with wire harness electrical interface 125.Automobile interface female 510 and automobile electrical interface male 520 are inserted electronic control unit electrical interface 115 and wire harness electrical interface 125 respectively, make the utility model electric-control system pick-up unit be electrically connected with the electronic control unit 110 and/or the electronic control unit peripheral electron parts 120 of this automobile electric control system.
The inner CPU module 200 that is provided with of the used electric-control system pick-up unit of this automobile comprises that model is microcontroller 210, on-off circuit 220, communicating circuit 230, radio receiving transmitting module 240 or network transmission module, testing circuit 250 and the electronic unit mimic channel 260 of STM32F103.Wherein testing circuit 250 comprises the multimeter special IC (not marking) of being with communication function, this multimeter special IC can detect resistance, voltage, frequency, diode characteristic etc., by microcontroller 210 its work of control, can select the static state of the project that will test and detected electrons control module 110 and electronic control unit peripheral electron parts 120 and dynamic each electrical quantity, detect the result who obtains and be sent in the microcontroller 210 through it.On-off circuit 220 comprises the integrated circuit (not marking) of matrix switch (not marking) and this matrix switch work of control, on-off circuit 220 is controlled its work on demand by microcontroller 210, can disconnect, connects or switch being electrically connected of electronic control unit 110 and electronic control unit peripheral electron parts 120.Electronic unit mimic channel 260 comprises the potentiometer (not marking) of translator, to suspect when on-off circuit 220 the electronic control unit peripheral electron parts 120 that damage and electronic control unit 110 be electrically connected disconnection after, electronic unit mimic channel 260 these electronic control unit peripheral electron parts 120 of simulation also produce in the simulating signal access electronic control unit 110, thereby judge according to the substitution method principle whether these electronic control unit peripheral electron parts 120 damage; Electronic unit mimic channel 260 is produced by microcontroller 210 and comprises actuator driven signal, sensor signal, transformable voltage etc.; The simulation of the resistor-type electronic control unit peripheral electron parts 120 on the automobile electric control system adopts the potentiometer of microprocessor 210 control translators to realize, then resistance is also different when motor corner difference for the potentiometer of this translator, thereby can realize automatic control, simulate the resistor-type electronic control unit peripheral electron parts 120 under the different operating modes then.Communicating circuit 230 comprises CAN bus interface integrated circuit (not marking) and protocol conversion integrated circuit (not marking), can realize the function of diagnostic trouble code demoder, under electronic control unit 110 normal situations, by reading failure code and/or each data in the electronic control unit 110, learn the fault probable ranges of this automobile electric control system, cooperate testing circuit 250 and electronic unit mimic channel 260 further to obtain location of fault again by detecting the replacement of each electrical quantity, simulation electronic parts.Radio receiving transmitting module 240 can carry out data transmission or control with wireless mode with Other Instruments or equipment, or can carry out data transmission or control with the mode of network with Other Instruments or equipment by this network transmission module.
The inner human-computer interface module 300 that is provided with of the used electric-control system pick-up unit of this automobile is chromatic liquid crystal screen or the computers that have touch-screen, is used to show or indicate operation steps, operation selection and the testing result etc. of described CPU module 200; Touch-screen can be directly touch with hand import, function selecting etc.
The output of the power module 400 of the used electric-control system pick-up unit of this automobile is the DC voltage of 12V, as the battery of 12V, supplies with each module operating voltage by this battery; Perhaps, described power module 400 comprises a power interface and by the external power supply adaptor of this power interface, power supply adaptor be input as civil power, its output is that the DC voltage of 12V is supplied with each module operating voltage; Or when normal and automobile was worked when automobile storage battery and wire harness, described power module 400 can directly replace with automobile storage battery.
In being the internal storage of microcontroller 210 of STM32F103, model prestores this automobile electrical quantity numerical value just often, electronic control unit electrical interface 115 each stitch resistance to earth value during as static state, the magnitude of voltage dynamically the time, wire harness electrical interface 125 each stitch resistance to earth value when static, the magnitude of voltage dynamically time the etc.If data volume greatly also can external memorizer.This numerical value can be obtained or be gathered the data of normal this automobile by open source information, as " up-to-date automobile electronic control unit terminal detects databook " of Liaoning science tech publishing house.
During detection, earlier be plugged on originally on this automobile together wire harness electrical interface 125 and electronic control unit electrical interface 115 separately, again two the electrical interface automobile interface females 510 and the automobile electrical interface male 520 of the interface module 500 of the used electric-control system pick-up unit of this automobile are inserted respectively on electronic control unit electrical interface 115 and the wire harness electrical interface 125.
In the present embodiment, the used electric-control system pick-up unit of this automobile has the artificial selection test and tests two kinds of functions automatically.Artificial selection test is meant that the project that the autonomous selection of operating personnel will be tested detects, simulation, communication etc.Automatically test is that manual steps with standard is set in the central processing module 200, is automatically performed by this pick-up unit, searches abort situation automatically.Below explain with automatic test, the difference of artificial selection test is to comprise that operation steps can select.Give this pick-up unit power supply, select automatic test by the touch-screen of human-computer interface module 300.
Can pass through following steps, each electrical quantity of this automobile electric control system 100 of Preliminary detection, thus judge the place that it breaks down.
One, detect static state and dynamic electrical parameter:
(1) disconnects by the on-off circuit 220 of described CPU module 200 circuit 55 stitch being provided with between two electrical interfaces 510,520 of interface module 500, the electrical connection that is about to electronic control unit 110 and electronic control unit peripheral electron parts 120 disconnects, and whether cooperate on-off circuit 220 to detect this automobile supply voltage earlier by testing circuit 250 then normal.In the present embodiment, the positive pole of this automobile storage battery is electrically connected with No. 37 stitch of wire harness electrical interface 125, is promptly detected the magnitude of voltage of these No. 37 stitch by testing circuit 250, judges whether it has fault, if any then being solved earlier.Cooperate the on-off circuits 220 resistance to earth value of detected electrons control module electrical interface 115 each stitch and wire harness electrical interface 125 other each stitch except that No. 37 stitch one by one by testing circuit 250 again, the result is sent to microcontroller 210, by normal numeric ratio in this microcontroller 210 and the storer in it, if undesired, alert is handled in advance.This can check out and comprise shorted to earth, fault such as loose contact over the ground; such as the power protection diode breakdown in electronic control unit 110 internal circuits; to cause its No. 37 stitch and the short circuit of No. 19 ground wire stitch, the resistance of No. 37 stitch was 0 or was close to 0 this moment.Cause shorted to earth if also causing easily connect that electric wire in the wire harness of electronic control unit peripheral electron parts 120 and wire harness electrical interface 125 is aging, corrosion etc. links to each other with this automobile iron-clad; And sensor, actuator puncture etc. also can cause shorted to earth; Connector lures erosion can cause resistance to earth increase etc.
(2) on state characteristic of testing circuit 250 detected electrons control modules 110 and electronic control unit peripheral electron parts 120 each specific stitch, in 55 stitch such as this electronic control unit electrical interface 115, the ground wire that a plurality of sensors or power unit are arranged, be commonly referred to as the bonding end on the automobile, promptly comprise a plurality of ground wire stitch, as 2, No. 19 stitch etc., they directly are electrically connected in electronic control unit 110, if testing circuit 250 detects not conducting between them, then proof has loose contact or electronic control unit 110 internal circuits that the fault of open circuit is arranged.Because the earth point in this automotive wire bundle is not necessarily identical, such as No. 41 stitch in the wire harness electrical interface 125 through wire harness at cylinder body starter place bonding, 19,2,14, No. 24 stitch can also specifically know it is which position contact is bad through wire harness bonding under accumulator so detect in view of the above.Again such as; No. 37 stitch of the positive termination of electronic control unit 110 internal protection diodes; negativing ending grounding; be that negative terminal connects 2, No. 19 stitch etc.; because the characteristic of diode is not conducting of forward; reverse-conducting, so testing circuit 250 detects the diode characteristic of No. 37 stitch and ground wire stitch in view of the above, can learn whether electronic control unit 110 protection diodes are normal.For other vehicles, some sensor is the device with diode characteristic, also can detect in view of the above and tentatively learn its quality.
(3) resistance value to power end of testing circuit 250 detected electrons control module electrical interfaces, 115 each stitch and wire harness electrical interface 125 each stitch, this can detect electronic control unit 110 or whether electronic control unit peripheral electron parts 120 have faults such as direct power.
(4) resistance value of testing circuit 250 detected electrons control module peripheral electron parts 120, again with just often numeric ratio, can tentatively determine its quality, three connection terminals as throttle position sensor are received 12 of wire harness electrical interface 125 respectively by wire harness, 30, No. 53 stitch, just often, resistance value between No. 12 stitch and No. 53 stitch should be about 1.95 ohm, air throttle is by full cut-off during to standard-sized sheet, resistance is 1.1～280 kilo-ohms of variations between No. 30 stitch and No. 53 stitch, in view of the above, testing circuit 250 detects the resistance value between above-mentioned each stitch of wire harness electrical interfaces 125, can tentatively judge the quality of throttle position sensor.
Step 3, by the on-off circuit 220 of described CPU module 200 with of the be electrically connected connection of described electronic control unit 110 with electronic control unit peripheral electron parts 120, testing circuit 250 detects has respectively powered to described electronic control unit 110 and electronic control unit peripheral electron parts 120, but the electrical quantity when having the automobile unstart of this electric-control system 100, comprise electrical quantitys such as magnitude of voltage and frequency, again relatively with each just often corresponding electrical parameter values, further judge whether to exist fault, if any then being solved, then do not continue next step as having.During such as the electric-control system 100 on the measured automobiles, connect ignition switch and make electronic control unit peripheral electron parts 120 feed power supply, the electrical quantity of this automobile electric control system 100 when automobile does not also start.On-off circuit 220 is all connected 55 stitch circuits between 500 liang of electrical interfaces of interface module 510,520 for another example, make electronic control unit 110 be electrically connected by these 55 stitch circuits with electronic control unit peripheral components 120, do not start up the car this moment, cooperate on-off circuit 220 to detect the electrical quantity of each bar circuit by testing circuit 250, each electrical quantity corresponding with normal value relatively tentatively judged whether fault.
Two, simulate each electronic unit by the substitution method principle:
Through above step, can judge the abort situation of described electric-control system 100 parts of this automobile, faults such as, blown fuse loosening, the output of sensor no signal such as short circuit between the wire harness of this automobile, car plug.If can't judge, can use the abort situation of the described electric-control system 100 of replacement ratio juris this automobile of preliminary judgement again according to following steps:
Step 1, by the on-off circuit 220 of described CPU module 200 with of the be electrically connected disconnection of described electronic control unit 110 with electronic control unit peripheral electron parts 120, and by the described electronic control unit 110 of described electronic control unit peripheral electron parts 120 accesses of electronic unit mimic channel 260 simulations of described CPU module 200, whether the described electronic control unit 110 of testing circuit 250 detections by described CPU module 200 has corresponding output signal to comprise fuel injection signal again, ignition signal, the pulse width of idle signal and all signals, and judge whether described electronic control unit 110 is normal, then solved as electronic control unit 110 faults as described in really, as not being then to continue next step.Such as the automobile interface female 510 of on-off circuit 220 with interface module 500,55 stitch circuits between the automobile electrical interface male 520 all disconnect, electronic unit mimic channel 260 passes through the automobile interface female 510 of interface module 500 again with 18 of electronic control unit electrical interface 115,27, No. 37 stitch are received the positive source of this pick-up unit, present embodiment is+DC voltage of 12V, No. 2 stitch are connect power cathode, and then the square-wave signal that the crankshaft position sensor of being simulated by electronic unit mimic channel 260 sends inserts No. 49 stitch, whether No. 3 stitch that comprised the BOR Bunker of Redelivery pump by testing circuit 250 detected electrons control modules 110 have signal, connect 17 of atomizer, 16,34, No. 35 whether stitch has No. 1 stitch of signal and contact fire coil whether signal is arranged, and the pulse width of signal, amplitudes etc. judge tentatively whether this electronic control unit 110 has fault.
Can simulate more sensor in addition and insert, can further diagnose.As simulate cooling-water temperature transmitter and insert 45, No. 30 stitch with the adaptive interface module 500 automobile interface females 510 of electronic control unit electrical interface 115.The simulation control of described cooling-water temperature transmitter is realized by the potentiometer of translator in the described electronic unit mimic channel 260, potentiometer taper one termination of translator is gone into No. 45 stitch of this automobile interface female 510, No. 30 stitch of one termination, when motor rotates, the resistance change of potentiometer, make described 45, the resistance change of No. 30 stitch, the resistance value of potentiometer is measured by testing circuit 250, adjust in view of the above by microcontroller 210, the resistance that makes access is in normal range, and can in normal range, adjust, thereby simulate temperature under the various operating modes.Pulse width difference such as oil spout ignition signal under the different coolant temperatures, so, can further diagnose this cooling-water temperature transmitter whether fault is arranged with normal value corresponding comparison by oil spout, the firing pulse width that testing circuit 250 detects under the different analog temperatures.
Step 2, by the on-off circuit 220 of described CPU module 200 with of the be electrically connected connection of described electronic control unit 110 with electronic control unit peripheral electron parts 120, disconnect the connecting circuit of a certain parts and the electronic control unit 110 of described electronic control unit peripheral electron parts 120 more one by one by described on-off circuit 220, then a certain parts of simulating these electronic control unit peripheral electron parts 120 that are disconnected by described electronic unit mimic channel 260 insert primary circuit, if fault disappears, then can judge it is a certain parts damages of these electronic control unit peripheral electron parts 120 substantially.With the resistor-type cooling-water temperature sensor disconnection of the above electric-control system 100 of automobile, insert primary circuit by resistance of described electronic unit mimic channel 260 simulations such as earlier again, if fault disappears, the resistor-type cooling-water temperature sensor damage that then disconnects; If fault still exists, then continue to disconnect the air flowmeter of the above electric-control system 100 of automobile, insert primary circuit by described electronic unit mimic channel 260 simulated air flowmeters again, as then this air flowmeter damage of fault disappearance, so analogize.By on-off circuit 220 cooling-water temperature transmitter is opened from circuit interruption for another example, promptly pass through of No. 45 stitch disconnection of the automobile electrical interface male 520 of interface module 500 with wire harness electrical interface 125 by on-off circuit 220, simulate the control cooling-water temperature transmitter is linked into electronic control unit electrical interface 115 by the automobile interface female 510 of interface module 500 45, No. 30 stitch by the potentiometer of translator in the electronic unit mimic channel 260, if fault disappears, then prove its damage; Otherwise cooling-water temperature transmitter is taken back in the circuit by on-off circuit 220, also promptly by the automobile electrical interface male 520 of interface module 500 No. 45 stitch of wire harness electrical interface 125 connected by on-off circuit 220, again another electronic unit is opened from circuit interruption, again by in electronic unit mimic channel 260 its places in circuit of simulation, if fault disappears, then prove its damage; Otherwise continue replacement, if promptly fault is not removed then is continued to disconnect one by one another parts of described electronic control unit peripheral electron parts 120, and by described electronic unit mimic channel 260 simulation accesses, till finding abort situation.
Three, read failure code, data etc., further detect this automobile electric control system 100:
Be typically provided with the communication terminal on the electronic control unit electrical interface 115 of described electric-control system 100, the diagnostic trouble code demoder is electrically connected read failure code, voltage data, current data etc. by wire harness electrical interface 125, electronic control unit electrical interface 115 etc. with the communication terminal.Can be by this principle, on the CPU module 200 of this electric-control system pick-up unit, communicating circuit 230 is set, in order to carry out communication with electronic control unit 110, thereby obtain failure code, voltage data and the temperature data of described electronic control unit 110, and transmitting fill order etc., this does not need to change the electrical connection of electric-control system 100 equally.By failure code, voltage data and the temperature data that reads described electronic control unit 110, and the transmission fill order etc., again in conjunction with the testing circuit 250 and the electronic unit mimic channel 260 of CPU module 200, abort situation that can the described electric-control system 100 of more accurate, rapider judgement.During detection, whether first trial inspection electronic control unit 110 has fault, and guarantees that its power supply is normal, carries out communication again, according to failure code that reads and/or data, dwindles sensing range, further detects again.No. 55 stitch such as this electronic control unit electrical interface 115 are diagnostic signal stitch, communicating circuit 230 is electrically connected with No. 55 stitch of electronic control unit electrical interface 115 by the automobile interface female 510 of interface module 500, press communications protocol read failure code, data stream by microcontroller 210, and resolve fault code implication, analyze the Position Approximate that data stream etc. is learnt fault, by the method for aforesaid detection and simulation, further determine its abort situation again.
In addition, electronic control unit 110 often has the element test function, by with its communication, send test instruction, send drive signal by electronic control unit 110 and give electronic control unit peripheral electron parts 120, whether produce corresponding actions by operating personnel's detected electrons control module peripheral electron parts 120 again, thereby judge that it denys to damage that electronic control unit peripheral electron parts 120 are not carried.Be electrically connected with No. 55 stitch of electronic control unit electrical interface 115 such as the automobile interface female 510 of communicating circuit 230 by interface module 500, send Instruction Selection element test function by microcontroller 210, cooperate on-off circuit 220 to detect the electronic unit of surveying by testing circuit 250 again and whether move, and then learn whether the electronic unit of surveying damages.
In the described electric-control system 100 of this specific embodiment; No. 37 stitch of wire harness electrical interface 125 are connected with the positive electrical of automobile storage battery; when normal and automobile is worked when automobile storage battery and wire harness; the utility model does not need external power source to supply with; its power module 400 can directly replace with the accumulator on the automobile, and this should be considered as not influencing protection domain of the present utility model.Because this moment, if automobile do not have power supply or supply voltage low the operating voltage of this pick-up unit then pick-up unit do not work, operating personnel can judge in view of the above that the automobile power supply has fault; If supply voltage can make this pick-up unit work, then can compare by the testing circuit 250 measurement supply voltages of this pick-up unit and with regime values, diagnostic result and/or voltage value are shown in the LCDs of human-computer interface module 300, whether operating personnel can judge in view of the above also whether power supply is normal, normal etc. such as magnitude of voltage.
The CPU module 200 of the used electric-control system pick-up unit of this automobile also comprises radio receiving transmitting module 240 or network transmission module, this radio receiving transmitting module 240 or network transmission module are electrically connected with described microcontroller 210, can carry out data transmission or control with wireless mode with Other Instruments or equipment by this radio receiving transmitting module 240, or can carry out data transmission or control with the mode of network with Other Instruments or equipment by this network transmission module.
Under the normal condition, the normal value of the various electrical quantitys of the electronic unit of electric-control system is obtained by open source information or measurement usually, but because each transport facility such as car replacement speed are fast, electric-control system on it is also being brought in constant renewal in, or other reason is under the situation that can't obtain its normal electrical parameter, can look for normal traffic means of transport such as automobile that identical electric-control system is housed to do standard, cooperate the used electric-control system pick-up unit of a plurality of these automobiles applied in any combination, existing is that example describes with two.
Get two of the used electric-control system pick-up units of this automobile, be numbered A, B, at first wire harness electrical interface 125 and the electronic control unit electrical interface 115 that was plugged on originally on each electric-control system 100 together separated, again with A number described electric-control system pick-up unit interface module 500 electrical interfaces 510,520 are connected with electronic control unit peripheral electron parts 120 wire harness electrical interfaces 125 with the electronic control unit electrical interface 115 of a normal electric-control system 100 respectively, with another B number described electric-control system pick-up unit interface module 500 electrical interfaces 510,520 have the electronic control unit electrical interface 115 of the electric-control system 100 that fault need check to be connected with electronic control unit peripheral electron parts 120 wire harness electrical interfaces 125 with one respectively; But the then abort situation of the described electric-control system 100 of preliminary judgement according to the following steps successively:
1. A number described electric-control system pick-up unit detects some projects of normal electric-control system 100, such as the voltage of No. 37 stitch that detect wire harness electrical interface 125, in the CPU module 200 that the testing result or the detected value of this project is stored in A number described electric-control system pick-up unit;
2. the CPU module 200 of A number described electric-control system pick-up unit is sent instruction, radio receiving transmitting module 240 or network transmission module communication by its radio receiving transmitting module 240 or network transmission module and B number described electric-control system pick-up unit, require B number described electric-control system pick-up unit also to detect this project of fault electric-control system 100, such as the voltage of No. 37 stitch that also detect wire harness electrical interface 125;
3. B number described electric-control system pick-up unit received this instruction by radio receiving transmitting module 240 or network transmission module, and by its CPU module 200 these instructions of parsing, learn it is the project that will detect which correspondence, B number described electric-control system pick-up unit detects this corresponding project then, and the detection data of the project that this is corresponding are stored in the CPU module 200 of B number described electric-control system pick-up unit;
4. the CPU module 200 of B number described electric-control system pick-up unit is sent and is detected the instruction of finishing, by radio receiving transmitting module 240 or the network transmission module communication of its radio receiving transmitting module 240 or network transmission module to A number described electric-control system pick-up unit, after A number described electric-control system pick-up unit receives this signal, send instruction, require B number described electric-control system pick-up unit to transmit it and detect data to A number described electric-control system pick-up unit;
5. after the detection data that B number described electric-control system pick-up unit of A number described electric-control system pick-up unit reception passed back, also should detect data and be stored in its CPU module 200;
6. A number described electric-control system pick-up unit detects data to two and compare, and be undesired as this project, terminating operation then, and show by described human-computer interface module 300; As normally, proceed the detection of other project, 6. 1. repeating step arrive, till finding abort situation.
In the above operating process, can detect a plurality of projects once by A number described electric-control system pick-up unit, instruct B number described electric-control system pick-up unit once a plurality of projects to be detected again, treat to transmit the detection data again after a plurality of projects detections are finished, compare, and judge it is which project is undesired.In the above operating process, can add manual control, carry out step by step by operating personnel.
It more than is the specific embodiment that the utility model electric-control system pick-up unit detects described automobile electric control system; more than the detection step is a selection in numerous steps; be not limited to described detection step, only change detects step and should be considered as protection domain of the present utility model equally a little.
It is the electrical interface suitable with electronic control unit electrical interface 115 and wire harness electrical interface 125 that the interface module 500 of the utility model electric-control system pick-up unit does not limit, it also can be other electrical interface, form by row's pin of two 40 pin such as interface module 500, dispose various electrical interfaces in addition again, with the electrical interface of configuration with after electronic control unit electrical interface 115 is connected, in the row's of insertion pin, realize that finally electric-control system is electrically connected with this pick-up unit again.Because vehicle is numerous, electronic control unit electrical interface 115 is not necessarily identical with wire harness electrical interface 125, disposes different electrical interfaces and can adapt to different vehicles, and promptly this pick-up unit can be changed interface module 500, and this should be considered as protection domain of the present utility model.
The utility model electric-control system pick-up unit and detection method not only can be used for the electric-control system of motor car engine, can also be used for the electric-control system on the transport facilitys such as electric motor car, aircraft, boats and ships, engineering machinery, power vehicle and railcar; For other electric-control system, only need to select the parameter in corresponding interface module 500 and the adjustment CPU module 200 to get final product, can select corresponding plug, contact pin, test probe etc. as interface module 500.CPU module 200, human-computer interface module 300, power module 400 and interface module 500 be unified be integrated on the circuit board or directly with objects such as plastic cement with all module package in one, reach effect simple in structure, easy to use.
The above embodiment has only expressed preferred implementation of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim; Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection domain of the present utility model; Therefore, all equivalents and modifications of being done with the utility model claim scope all should belong to the covering scope of the utility model claim.
Claims (10)
1. an electric-control system pick-up unit in order to detect the working condition of electric-control system (100), comprises power module (400), it is characterized in that:
Also comprise CPU module (200), human-computer interface module (300) and interface module (500), described power module (400) is supplied with each module operating voltage; Described interface module (500) comprises respectively electronic control unit electrical interface (115) and the suitable electrical interface (510,520) of wire harness electrical interface (125) with described electric-control system (100); Described CPU module (200) is disconnected described electronic control unit (110), connected or is switched with being electrically connected of described electronic control unit peripheral electron parts (120) by described interface module (500), and produces described electric-control system (100) and carry out the signal of need of work and/or measure signal by described electric-control system (100) input; Described interface module (500) is used for sending the signal that described CPU module (200) produces to described electric-control system (100) and/or signal that described electric-control system (100) is produced sends described CPU module (200) to; Described human-computer interface module (300) comprises operation steps, operation selection and the testing result that is used for showing or indicating described CPU module (200).
2. electric-control system pick-up unit according to claim 1 is characterized in that:
Described CPU module (200) comprises microcontroller (210), on-off circuit (220), testing circuit (250) and electronic unit mimic channel (260), described microcontroller (210) is electrically connected with described on-off circuit (220), testing circuit (250) and electronic unit mimic channel (260) respectively, and described on-off circuit (220) also is electrically connected with described testing circuit (250) and electronic unit mimic channel (260) respectively;
Described microcontroller (210) carries out communication with described on-off circuit (220), and by the instruction of described on-off circuit (220) by this microcontroller (210) described electronic control unit (110) is disconnected, connects or switch with being electrically connected of described electronic control unit peripheral electron parts (120); Described testing circuit (250) cooperates the changeable detection of described on-off circuit (220) to need each electrical quantity of check point; Described electronic unit mimic channel (260) is used to simulate described electronic control unit peripheral electron parts (120), cooperate described on-off circuit (220) that described electronic control unit peripheral electron parts (120) are broken from primary circuit, simulate this electronic control unit peripheral electron parts (120) again and insert, thereby can simulate described electronic control unit peripheral electron parts (120) or simulate the partial function of described electronic control unit (110).
3. electric-control system pick-up unit according to claim 2 is characterized in that:
The model of described microcontroller (210) is STM32F103; Described on-off circuit (220) comprises the integrated circuit of matrix switch and this matrix switch work of control; Described testing circuit (250) comprises the multimeter special IC of being with communication function, and by described microcontroller (210) control detection circuit (250) test item, this testing result is returned to described microcontroller (210) by described testing circuit (250); Described electronic unit mimic channel (260) comprises potentiometer.
4. electric-control system pick-up unit according to claim 2 is characterized in that:
Described CPU module (200) also comprises communicating circuit (230), and described communicating circuit (230) is electrically connected with described microcontroller (210) and on-off circuit (220) respectively; Described communicating circuit (230) obtains to comprise failure code, voltage data and the temperature data of described electronic control unit (110) by described on-off circuit (220) and electronic control unit (110) communication, and transmits fill order.
5. electric-control system pick-up unit according to claim 4 is characterized in that:
Described communicating circuit (230) comprises CAN bus interface integrated circuit and protocol conversion integrated circuit.
6. electric-control system pick-up unit according to claim 2 is characterized in that:
Described CPU module (200) also comprises radio receiving transmitting module (240) or network transmission module, this radio receiving transmitting module (240) or network transmission module are electrically connected with described microcontroller (210), can carry out data transmission or control with wireless mode with Other Instruments or equipment by this radio receiving transmitting module (240), or can carry out data transmission or control with the mode of network with Other Instruments or equipment by this network transmission module.
7. electric-control system pick-up unit according to claim 1 is characterized in that:
Described human-computer interface module (300) is chromatic liquid crystal screen or the computer that has touch-screen.
8. electric-control system pick-up unit according to claim 1 is characterized in that:
Two electrical interfaces (510,520) of described interface module (500) be respectively with the suitable automobile interface female (510) of described electronic control unit (100) electrical interface and with the suitable automobile electrical interface male (520) of described electronic control unit peripheral electron parts (120) wire harness electrical interfaces (125).
9. according to each described electric-control system pick-up unit of claim 1～8, it is characterized in that:
Described CPU module (200), human-computer interface module (300), power module (400) and interface module (500) unification are integrated on the circuit board or are installed in the same housing.
10. electric-control system pick-up unit according to claim 9 is characterized in that:
Described power module (400) is a battery, supplies with each module operating voltage by this battery; Perhaps, described power module (400) comprises a power interface and by the external power supply adaptor of this power interface, supplies with each module operating voltage by described power supply adaptor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201471011U CN201266321Y (en) | 2008-08-29 | 2008-08-29 | Detection device for electric control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201471011U CN201266321Y (en) | 2008-08-29 | 2008-08-29 | Detection device for electric control system |
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| CN201266321Y true CN201266321Y (en) | 2009-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008201471011U Expired - Lifetime CN201266321Y (en) | 2008-08-29 | 2008-08-29 | Detection device for electric control system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101515176B (en) * | 2008-08-29 | 2012-02-08 | 郭春勇 | Detection device and detection method for electric control system |
| CN102806853A (en) * | 2012-08-28 | 2012-12-05 | 机科发展科技股份有限公司 | Vehicular digital instrument system with monitoring, parameter-setting and alarm functions |
| CN106200627A (en) * | 2016-08-31 | 2016-12-07 | 山推工程机械股份有限公司 | The autognostic system of a kind of intelligent controller and self-diagnosing method |
| CN107153415A (en) * | 2017-07-21 | 2017-09-12 | 连云港职业技术学院 | The detection means and detection method of a kind of electric-control system |
| CN108089563A (en) * | 2017-11-15 | 2018-05-29 | 厦门市美亚柏科信息股份有限公司 | A kind of ECU fast diagnosis methods, terminal and system |
| CN109116835A (en) * | 2018-09-05 | 2019-01-01 | 中国船舶重工集团公司第七〇九研究所 | A kind of feature card test method peculiar to vessel and device |
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2008
- 2008-08-29 CN CNU2008201471011U patent/CN201266321Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101515176B (en) * | 2008-08-29 | 2012-02-08 | 郭春勇 | Detection device and detection method for electric control system |
| CN102806853A (en) * | 2012-08-28 | 2012-12-05 | 机科发展科技股份有限公司 | Vehicular digital instrument system with monitoring, parameter-setting and alarm functions |
| CN106200627A (en) * | 2016-08-31 | 2016-12-07 | 山推工程机械股份有限公司 | The autognostic system of a kind of intelligent controller and self-diagnosing method |
| CN107153415A (en) * | 2017-07-21 | 2017-09-12 | 连云港职业技术学院 | The detection means and detection method of a kind of electric-control system |
| CN108089563A (en) * | 2017-11-15 | 2018-05-29 | 厦门市美亚柏科信息股份有限公司 | A kind of ECU fast diagnosis methods, terminal and system |
| CN108089563B (en) * | 2017-11-15 | 2019-10-01 | 厦门市美亚柏科信息股份有限公司 | A kind of ECU fast diagnosis method, terminal and system |
| CN109116835A (en) * | 2018-09-05 | 2019-01-01 | 中国船舶重工集团公司第七〇九研究所 | A kind of feature card test method peculiar to vessel and device |
| CN110415632A (en) * | 2019-07-23 | 2019-11-05 | 安徽天域视听器材有限公司 | Video transmission system and its transmission method based on voice control |
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