CN102476616B - Periodic self-detection method for electric equipment of vehicle - Google Patents
Periodic self-detection method for electric equipment of vehicle Download PDFInfo
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- CN102476616B CN102476616B CN201010559624.9A CN201010559624A CN102476616B CN 102476616 B CN102476616 B CN 102476616B CN 201010559624 A CN201010559624 A CN 201010559624A CN 102476616 B CN102476616 B CN 102476616B
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Abstract
The invention relates to a periodic self-detection method for electric equipment of a vehicle. The detection method is characterized by comprising performing self-detection on an equipment control network, each network node processor and electric equipment of a vehicle controlled by the network node processor respectively. The detection method is simple and effectively; detected failure information can be transmitted in time, so that a user can find problems very first time and take further measures; and the user take precaution measures on faults, the occurrence rate of danger is lowered effectively, and the safety of the user is guaranteed greatly.
Description
Technical field
The present invention relates to method of inspection, specifically, relate to cycle self-sensing method.
Background technology
In modern vehicle, microprocessor control technology is widely applied in each function system, discrete function system performance is got a promotion, discrete function system is coupled together by bus, just formed a vehicle arrangement bus control network system, be articulated between each functional node on this network and realized function synthesized and information sharing by specific bus communication control protocol; Vehicle arrangement bus control network system not only will be realized the control to equipment, also will realize the self-checking function in vehicle arrangement operational process, when et out of order, can indicate to occupant in real time.
Gu Wenyan Mao Enrong China Agricultural University journal 2000, (4): 109-112 discloses " the Vehicle Security performance automatic detection system based on the new world ", by " outward appearance detects and the discharge of login station detects station " etc., formed, and further point out: " self-checking function: the mode of operation that can detect automobile equipment, comprise A/D cartoon road, PORT COM coupled condition, discharge station, speedmeter tester sideslip detecting bench, axle weight/brake platform and headlight, loudspeaker, the self check of station is detected on chassis ", documents content is special vehicle testing technology, that a kind of " off-line " formula detects, testing goal is " safety method ", but this checking system needs computer to complete concrete detection, make vehicle can not reflect in time the status information of vehicle in the process of travelling, once et out of order, user can not understand this information in the very first time, also just cannot take in time treatment measures to fault, extend thus a series of problem, make this system still to the detection of vehicle arrangement, rest on an elementary step.
Summary of the invention
The object of the invention is to, in view of the foregoing defects the prior art has, a kind of periodic self-detection method for electric equipment of vehicle is provided, this method of inspection is simply effective, can detect in time rapidly the failure problems of vehicle, thereby make user in the very first time, to fault, make a response and process, broken through the defect that normal conventional vehicle arrangement detects.
A kind of periodic self-detection method for electric equipment of vehicle provided by the invention, its improvements are that described method of inspection comprises respectively for device control network, detection certainly for each node of network treater and the electrical equipment controlled for node of network treater, comprises the following steps:
1) bus controller and each node are switched on power, the program of each self-operating oneself, the counting machine of node microprocessor starts accumulated counts;
2) bus controller program, from remote node 1, is first inquired node communication state, by the response message decision node communications status of node, if mal illustrates node communication failure; If normal, carry out query node counter data below, if the data of receiving are identical with the data of receiving last time, be that counting is not cumulative for counting machine, represent modal processor possible breakdown, if counting machine is cumulative normal, represent that node communication and microprocessor are controlled function normal, can proceed operation below;
3) modal processor operational vehicle equipment self-inspection measuring program, and testing result is uploaded to bus controller, realize the real-time self-checking function to car load electrical equipment;
4) bus controller requires node to communicate interface self check, and result is in order to the bus communication inquiry of next system cycle;
5) bus controller and each remote node are carried out above to 2) to 4) operation.
The provided by the invention first preferred periodic self-detection method for electric equipment of vehicle, described for device control network from detecting as to complete by the trace routine of moving on bus network controller: fault detection program is embedded in system program, adopt the operation of fixing bus scheduling frequency together with system program, be about to bus line command and break into data packet and send in bus with certain cycle frequency; The beginning of each program loop will be inquired remote node communications status, and the end in each cycle all requires the current communications status of remote node self check, and stores this information in order to inquiry next time, thereby detects performance period.
The provided by the invention second preferred vehicular electrical equipment is controlled the cycle self-sensing method of network, and the described trace routine from detecting as moving on by each microprocessor node for each node of network completes:
Microprocessor trace routine is embedded in the control program of microprocessing unit equally, micro-processing trace routine is designed to a continuous cumulative counting machine, counter values can be running in the watchdog routine of bus controller and inquire about periodically, if the counter values inquiring is constantly cumulative, just illustrate that each microprocessor node is working properly; If counter values is constant or variation abnormality, illustrate that the work of microprocessor node has fault;
The provided by the invention the 3rd preferred vehicular electrical equipment is controlled the cycle self-sensing method of network, when bus network and modal processor state are all normal, carry out equipment periodic from detecting, test has realized the cycle self-checking function to whole vehicular electrical equipment so by different level again.
The provided by the invention the 4th preferred vehicular electrical equipment is controlled the cycle self-sensing method of network, step 1) gate time interval is less than the minimum cycle of run of system program on bus controller.
The continuous application in vehicle arrangement is controlled based on microprocessor control technology and bus communication control technology, the present invention proposes a kind of periodic self-detection method for electric equipment of vehicle, bus network, each node mode of operation in work and the equipment of controlling are detected in real time, can real-time diagnosis warning when certain node, certain device fails.
To the state-detection of electrical equipment comprise generating, take out dirt, starting, battery tension detect, oil mass detects, connection, disconnection, overcurrent, the short circuit of load, the distribution state of a control such as open circuit detect, when fault being detected, according to fault rank, point out and report to the police.
And " vehicular electrical equipment cycle from detect " refer to that vehicle realizes the real time automatic detection to electrical equipment in the process of moving, feature one is that self-checking function and systemic-function coupling are tight, testing process is embedded in system control function, control and together carry out with vehicle, can quick sensing when object is et out of order, for maintenance provides support.Feature two is existing by total line control network implementation, improves state-detection coverage and the degree of depth.
Compared with prior art, a kind of periodic self-detection method for electric equipment of vehicle provided by the invention has the following advantages:
1, method of inspection is simply effective, can pass in time the failure message detecting, and user was pinpointed the problems in the very first time, and then takes further terms of settlement;
2, make user to fault, take the measure checking erroneous ideas at the outset, effectively reduce dangerous generation, for user's safety provides strong guarantee;
3, promoted the application in vehicle arrangement is controlled of microprocessor control technology and bus communication control technology;
4, the failure problems of vehicle is processed in time, can greatly reduce vehicle because not keeping in repair for a long time, effectively extends the service life of vehicle;
5, easily manufacture, can extensively promote, good commercial promise is provided;
6, broken through common detecting test of vehicle not in time, inefficient defect;
7, can further promote the universal of automobile, the life being convenient for people to;
8, promote economic further developing, and the progress of science.
Accompanying drawing explanation
Fig. 1 is: the vehicle arrangement control bus network architecture schematic diagram of a kind of periodic self-detection method for electric equipment of vehicle provided by the invention;
Fig. 2 is: the vehicle arrangement control bus network monitoring program flow diagram of a kind of periodic self-detection method for electric equipment of vehicle provided by the invention;
Fig. 3 is: the power & electric management system bus network schematic diagram about embodiment of a kind of periodic self-detection method for electric equipment of vehicle provided by the invention.
The specific embodiment
By the specific embodiment, a kind of periodic self-detection method for electric equipment of vehicle provided by the invention is done to further more detailed description below.
embodiment 1
The periodic self-detection method for electric equipment of vehicle of the present embodiment, wherein, method of inspection comprises respectively for device control network, the detection certainly for each node of network treater and the electrical equipment controlled for node of network treater, comprises the following steps:
1) bus controller and each node are switched on power, the program of each self-operating oneself, the counting machine of node microprocessor starts accumulated counts;
2) bus controller program, from remote node 1, is first inquired node communication state, by the response message decision node communications status of node, if mal illustrates node communication failure; If normal, carry out query node counter data below, if the data of receiving are identical with the data of receiving last time, be that counting is not cumulative for counting machine, represent modal processor possible breakdown, if counting machine is cumulative normal, represent that node communication and microprocessor are controlled function normal, can proceed operation below;
3) modal processor operational vehicle equipment self-inspection measuring program, and testing result is uploaded to bus controller, realize the real-time self-checking function to car load electrical equipment;
4) bus controller requires node to communicate interface self check, and result is in order to the bus communication inquiry of next system cycle;
5) bus controller and each remote node are carried out above to 2) to 4) operation.
For device control network from detecting as to complete by the trace routine of moving on bus network controller: fault detection program is embedded in system program, adopt the operation of fixing bus scheduling frequency together with system program, be about to bus line command and break into data packet and send in bus with certain cycle frequency; The beginning of each program loop will be inquired remote node communications status, and the end in each cycle all requires the current communications status of remote node self check, and stores this information in order to inquiry next time, thereby detects performance period.
The trace routine from detecting as moving on by each microprocessor node for each node of network completes:
Microprocessor trace routine is embedded in the control program of microprocessing unit equally, micro-processing trace routine is designed to a continuous cumulative counting machine, counter values can be running in the watchdog routine of bus controller and inquire about periodically, if the counter values inquiring is constantly cumulative, just illustrate that each microprocessor node is working properly; If counter values is constant or variation abnormality, illustrate that the work of microprocessor node has fault;
When bus network and modal processor state are all normal, then carry out equipment periodic from detecting, test and realized the cycle self-checking function to whole vehicular electrical equipment so by different level.
Wherein, step 1) gate time interval is less than the minimum cycle of run of system program on bus controller.
Vehicle arrangement control bus network program flow process as shown in Figure 2.
The method of the present embodiment is applied in the power & electric management system based on total line control at certain model project, concrete steps:
(1) the power & electric management system bus network of certain model project based on total line control as shown in Figure 3, bus network is MIC bus, for fixing main control end formula bus architecture, chassis electronics package is MIC bus controller, node has power-supply controller of electric, and (address is 7, realize generating and take out dirt and detect), (address is 11 to electrical equipment Comprehensive Control box, realize starting, battery tension detects, oil mass detects), gun commander's load control capsule (address is 8), vehicle commander's load control capsule (address is 9), (address is 10 to chassis load control capsule, 8, 9, 10 3 control capsulees are realized the connection of load, disconnect, overcurrent, short circuit, the distribution state of a control such as open circuit detects).
The treater of (2) five nodes is Infineon's microprocessor, all be provided with the cumulative monitoring function of counting machine, counter values is put into the data buffer of MIC bus communication interface by dual port RAM, monitoring bus query node program loop communications status, the modal processor mode of operation of chassis electronics package and the equipment state of controlling, when detecting when abnormal, can real-time prompting or warning; Its cycle is from detecting watchdog routine flow process as shown in Figure 2.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; although the present invention is had been described in detail with reference to above-described embodiment; those of ordinary skill in the field are to be understood that: technical personnel still can be modified or be equal to replacement the specific embodiment of the present invention after being read present specification, but these modifications or change all depart from the present patent application, do not await the reply within claim protection domain.
Claims (4)
1. a periodic self-detection method for electric equipment of vehicle, it is characterized in that described method of inspection comprises respectively for device control network, detection certainly for each node of network treater and the electrical equipment controlled for node of network treater, comprises the following steps:
1) bus controller and each node are switched on power, the program of each self-operating oneself, the counting machine of node microprocessor starts accumulated counts;
2) bus controller program, from remote node 1, is first inquired node communication state, by the response message decision node communications status of node, if mal illustrates node communication failure; If normal, carry out query node counter data below, if the data of receiving are identical with the data of receiving last time, be that counting is not cumulative for counting machine, represent modal processor possible breakdown, if counting machine is cumulative normal, represent that node communication and microprocessor are controlled function normal, can proceed operation below;
3) modal processor operational vehicle equipment self-inspection measuring program, and testing result is uploaded to bus controller, realize the real-time self-checking function to car load electrical equipment;
4) bus controller requires node to communicate interface self check, and result is in order to the bus communication inquiry of next system cycle;
5) bus controller and each remote node are carried out above to 2) to 4) operation;
Described for device control network from detecting as to complete by the trace routine of moving on bus network controller: fault detection program is embedded in system program, adopt the operation of fixing bus scheduling frequency together with system program, be about to bus line command and break into data packet and send in bus with certain cycle frequency; The beginning of each program loop will be inquired remote node communications status, and the end in each cycle all requires the current communications status of remote node self check, and stores this information in order to inquiry next time, thereby detects performance period.
2. cycle self-sensing method according to claim 1, is characterized in that the described trace routine from detecting as moving on by each microprocessor node for each node of network completes:
Microprocessor trace routine is embedded in the control program of microprocessing unit equally, microprocessor trace routine is designed to a continuous cumulative counting machine, counter values can be running in the watchdog routine of bus controller and inquire about periodically, if the counter values inquiring is constantly cumulative, just illustrate that each microprocessor node is working properly; If counter values is constant or variation abnormality, illustrate that the work of microprocessor node has fault.
3. cycle self-sensing method according to claim 1, it is characterized in that when bus network and modal processor state are all normal, carry out equipment periodic from detecting, test has realized the real-time period self-checking function to whole vehicular electrical equipment so by different level again.
4. cycle self-sensing method according to claim 1, is characterized in that step 1) gate time interval is less than the minimum cycle of run of system program on bus controller.
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| CN201010559624.9A CN102476616B (en) | 2010-11-26 | 2010-11-26 | Periodic self-detection method for electric equipment of vehicle |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103112361A (en) * | 2013-03-08 | 2013-05-22 | 苏州恒知传感科技有限公司 | Automobile battery used as sensing node and electric automobile provided with the same |
| CN103412555B (en) * | 2013-07-01 | 2016-01-06 | 奇瑞新能源汽车技术有限公司 | A kind of method for diagnosing faults of electric vehicle controller chip |
| CN103577296B (en) * | 2013-11-21 | 2015-03-25 | 中国科学院深圳先进技术研究院 | Bus reliability testing method and system |
| CN108153273B (en) * | 2016-12-02 | 2021-02-05 | 上海汽车集团股份有限公司 | Vehicle signal failure fault diagnosis method and vehicle control unit |
| CN109683596A (en) * | 2019-03-04 | 2019-04-26 | 内蒙古一机集团宏远电器股份有限公司 | A kind of cab signal collector detection device |
| CN109709941A (en) * | 2019-03-04 | 2019-05-03 | 内蒙古一机集团宏远电器股份有限公司 | A kind of vehicle-mounted pumping dirt signal box detection device |
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