CN103630852B - A kind of intelligent head lamp system fault handling method and device - Google Patents
A kind of intelligent head lamp system fault handling method and device Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000001514 detection method Methods 0.000 claims abstract description 49
- 238000012545 processing Methods 0.000 claims abstract description 8
- 238000013024 troubleshooting Methods 0.000 claims description 25
- 230000008569 process Effects 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
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Abstract
The invention provides a kind of intelligent head lamp system fault handling method and device, before intelligent head lamp system initializes and in system running, carry out respectively fault detect and processing, can before system initialization, go out actuator failures by direct-detection, actuator failures is judged more rapid, accurate, simple, in order to avoid actuator still carries out intelligent head lamp system initialization while breaking down, humanized.
Description
Technical field
The invention belongs to automotive lighting technical field, be specifically related to a kind of intelligent front lighting lamp systemSystem fault handling method and device.
Background technology
Along with the international and domestic concern to vehicle security drive aspect, intelligent head lamp systemApply more and more extensive. Intelligence head lamp system generally adopts actuator integrated chip to carry outDrive. Existing intelligent head lamp system troubleshooting scheme is at intelligent front lighting lamp systemIn system running, judge whether fault of actuator, fault is classified, definite holdingRow device fault type belongs to horizontal direction control fault or vertical control fault, andCarry out corresponding troubleshooting.
But existing intelligent head lamp system troubleshooting scheme, mainly stresses faultFault treating procedure after detection, does not elaborate to the fault detect mode of actuator.In addition, according to the control mode of intelligent head lamp system to actuator carry out fault detect andJudgement, cannot actuator failures be detected in the very first time, and fault location is inaccurate.
Therefore, need a kind of intelligent head lamp system troubleshooting scheme badly above-mentioned in order to solveProblem.
Summary of the invention
The embodiment of the present invention provides a kind of intelligent head lamp system fault handling method and dressPut, in order to solve, existing intelligent head lamp system actuator failures location is inaccurate, eventBarrier is processed problem not in time, realizes the accurate location of intelligent head lamp system fault with fastSpeed is processed.
To achieve these goals, the embodiment of the present invention adopts following technological means:
The embodiment of the present invention provides a kind of intelligent head lamp system fault handling method, described inMethod comprises:
Detect actuator chip, and according to actuator chip detection signal, judge actuatorWhether fault; If actuator failures, alarm; Otherwise, indicating intelligent head lamp systemCarry out system initialization operation;
In intelligent head lamp system running, detect all kinds of of intelligent head lamp systemType input signal, and according to described all types of input signals, judge described all types of inputWhether fault of components and parts corresponding to signal, if described components and parts fault is carried out correspondingTroubleshooting.
Preferably, described detection actuator chip, is specially: move in actuator synchronizingUnder state, detect actuator chip.
Further, described method also comprises: if described components and parts fault, alarm;
Described alarm specifically comprises: utilize 1 trouble light grow bright or utilize flicker frequency to refer toShow fault type.
Preferably, described all types of input signal comprises: switching signal, controller localNetwork C AN signal, sensor signal and/or actuator chip signal;
The all types of input signals of the intelligent head lamp system of described detection, specifically comprise: rootAccording to default signal acquisition periods, gather switching signal, CAN bus signals, sensorSignal and/or actuator chip signal;
Described according to described all types of input signals, judge described all types of input signal pairWhether fault of the components and parts of answering, specifically comprises:
If in default switching signal detects duration, the each switching signal homogeneous phase collectingWith, be judged as switch fault; And/or
If detect in duration in a default CAN bus, do not receive CAN busSignal, is judged as CAN bus failure; Or, according to default signal acquisition periods,Gather the angle signal of rotary angle transmitter, and by the angle letter of the rotary angle transmitter receivingNumber compare with default first threshold and Second Threshold, if total at the 2nd default CANLine detects in duration, and the angle signal of described rotary angle transmitter continues to be less than first threshold,Or the angle signal of described rotary angle transmitter continues to be greater than Second Threshold, is judged asCAN bus signals fault; And/or
The sensor signal collecting is compared with the 4th threshold value with the 3rd default threshold value, if sensor signal is less than the 3rd threshold value or is greater than the 4th threshold value, counter adds 1;In default sensor detects duration, the numerical value of statistical counter record, and will countThe numerical value of device record and the 5th default threshold, if the numerical value of counter records is largeIn or equal the 5th threshold value, be judged as sensor fault; And/or
Described actuator chip detection signal is 2 tunnel level signals, if in default executionDevice detects in duration, and in described 2 tunnel level signals, having 1 road signal at least is fault-signal,Be judged as actuator failure of chip.
Preferably, all types of input signals of described intelligent head lamp system comprise actuatorChip signal;
In intelligent head lamp system running, after judging actuator failures, enterBefore the corresponding troubleshooting of row, described method also comprises:
According to the combination of actuator chip signal, determine that actuator failures type is short circuit eventBarrier, open fault or excess temperature fault.
The embodiment of the present invention also provides a kind of intelligent head lamp system fault treating apparatus, bagDraw together:
Detection module detected actuator core before initializing at intelligent head lamp systemSheet; And, in intelligent head lamp system running, detect intelligent head lamp systemAll types of input signals;
Control module, for the actuator chip detection detecting according to described detection moduleSignal, judges whether fault of actuator; If actuator failures, indicates alarm module to accuseAlert; Otherwise indicating intelligent head lamp system carries out system initialization operation; And,In intelligent head lamp system running, what detect according to described detection module is all kinds ofType input signal, judges whether fault of components and parts that described all types of input signal is corresponding,If described components and parts fault, indicates processing module to carry out corresponding troubleshooting.
Preferably, described detection module specifically for, under actuator synchronizing running status,Detect actuator chip.
Further, described control module also for, in the time judging described components and parts fault,Indicate described alarm module alarm;
Described alarm device specifically for, utilize the long bright or flicker frequency of 1 trouble light to refer toShow fault type.
Preferably, described all types of input signal comprises: switching signal, controller localNetwork C AN signal, sensor signal and/or actuator chip signal;
Described detection module specifically for, according to default signal acquisition periods, collection is openedClose signal, CAN bus signals, sensor signal and/or actuator chip signal; DescribedCAN bus signals also comprises the angle signal of rotary angle transmitter;
Described control module specifically for, when in default switching signal detects duration,The each switching signal homogeneous phase collecting simultaneously, is judged as switch fault; And/or
When detecting in duration in a default CAN bus, do not receive CAN busWhen signal, be judged as CAN bus failure; Or, described detection module is collectedThe angle signal of rotary angle transmitter is compared with default first threshold and Second Threshold, whenDetect in duration the angle signal of described rotary angle transmitter in the 2nd default CAN busContinue to be less than first threshold, or the angle signal of described rotary angle transmitter continues to be greater thanWhen Second Threshold, be judged as CAN bus signals fault; And/or
The sensor signal that described detection module is collected and default the 3rd threshold value and theFour threshold, in the time that sensor signal is less than the 3rd threshold value or is greater than the 4th threshold value,Make counter add 1; In default sensor detects duration, the number of statistical counter recordValue, and by the numerical value of counter records and the 5th threshold of presetting, work as counterWhen the numerical value of record is more than or equal to the 5th threshold value, be judged as sensor fault; And/or
Described actuator chip detection signal is 2 tunnel level signals, when the execution defaultDevice detects in duration, and in described 2 tunnel level signals, having 1 road signal at least is fault-signalTime, be judged as actuator failure of chip.
Preferably, all types of input signals of described intelligent head lamp system comprise actuatorChip signal;
Described control module also for, in intelligent head lamp system running, judgementAfter going out actuator failures, before carrying out corresponding troubleshooting, according to actuator chipThe combination of signal, determines that actuator failures type is short trouble, open fault or excess temperatureFault.
Compared with prior art, the above embodiment of the present invention has following useful technology effectReally:
The intelligent head lamp system troubleshooting scheme that the embodiment of the present invention provides is before intelligenceBefore illuminator system initialization and in system running, carry out respectively fault detect and locateReason can go out actuator failures by direct-detection before system initialization, made actuatorFault verification more rapidly, accurately, simple, in order to avoid actuator still enters while breaking downThe intelligent head lamp system of row initializes, humanized.
Brief description of the drawings
The intelligent front lighting lamp system troubleshooting process signal that Fig. 1 provides for the embodiment of the present inventionFigure;
The intelligent head lamp system fault treating apparatus knot that Fig. 2 provides for the embodiment of the present inventionStructure schematic diagram.
Detailed description of the invention
The problems referred to above that exist for prior art, the embodiment of the present invention provides a kind of intelligenceEnergy head lamp system troubleshooting scheme, in order to realize the standard of intelligent head lamp system faultDetermine position and fast processing. Below in conjunction with accompanying drawing, the embodiment of the present invention is described in detail.
Intelligence head lamp system is mainly made up of following components: controller, actuator,Sensor, CAN(ControllerAreaNetwork, controller local area network) busAnd all kinds of switches. The actuator of intelligence head lamp system is selected stepper motor, stepping electricityMachine can walk in synchronizing with partly under two kinds of mode of operations and move, and synchronizing operational mode speed is fast,But precision is not high, be applicable to need the occasion of quick failure judgement; Partly walk operational modePrecision is high, is applicable to accurately move occasion.
After intelligence head lamp system powers on, advanced line control unit MCU(MicroControlUnit, micro-control unit) initialize, to enable the input/output function of controller, and beThe global variable initialization of controller.
The embodiment of the present invention provides a kind of intelligent head lamp system fault treating apparatus, usesIn the actuator to intelligent head lamp system and other input signals carry out fault detect andProcess, this fault treating apparatus can comprise: detection module, control module, processing mouldPiece and alarm module, wherein, detection module is for detection of actuator chip and all types ofInput signal; Control module is corresponding for the signal judgement that detection module is detectedWhether fault of components and parts; Processing module is used for carrying out troubleshooting; Alarm module is for eventBarrier alarm.
After controller has initialized, intelligent headlamp fault treating apparatus can carry outIntelligence head lamp system fault detect and processing. Utilize intelligent headlamp fault treating apparatus,In these two stages before system initialization and in system running, carry out respectively faultDetect and process, not only can before system initialization, fast, accurately detect executionDevice fault can also detect actuator and switch, CAN in system runningBus, sensor input signal fault.
Below in conjunction with Fig. 1, describe intelligent head lamp system troubleshooting process in detail, asShown in figure, this flow process comprises the following steps:
Step 101, detects stepper motor chip.
Concrete, after intelligent head lamp system powers on and completes the initialization of controller,Before intelligent head lamp system carries out system initialization, intelligent headlamp troubleshooting dressPut and detect stepper motor chip. Now, stepper motor adopts synchronizing operation, before intelligence, shinesLamp failure treating apparatus, under stepper motor synchronizing running status, detects stepper motor chip.
Stepper motor chip (for example, sends 2 road low and high level signals by two pinsRepresent with 0 or 1 respectively), to indicate the state of stepper motor, for example, " 1 " representativeFault, " 0 " representative is normal. Intelligence headlamp fault treating apparatus is by default holdingIn row device sense cycle, detect the low and high level of two pins transmissions of stepper motor chipSignal, detecting stepper motor is fault or normal.
Whether step 102, according to stepper motor chip detection signal, judge stepper motorFault, if fault performs step 103; Otherwise, execution step 104.
Concrete, the stepper motor chip letter that intelligent headlamp fault treating apparatus detectsNumber have following four kinds of combinations: 00,01,10,11, for example can distinguish corresponding normal,Open fault, short trouble, four kinds of situations of excess temperature fault. Therefore, if in default holdingRow device detects in duration, and intelligent headlamp fault treating apparatus judges the inspection of stepper motor chipSurveying in signal has at least one fault-signal (at least 1 high level signal for example to be detected1), stepper motor fault is described, carries out alarm; If in the time that default actuator detectsIn length, intelligent headlamp fault treating apparatus judges nothing in stepper motor chip detection signalFault-signal (high level signal for example not detected), is just illustrating stepper motor stateOften, continue subsequent treatment.
Step 103, carries out fault warning.
Concrete, once judging stepper motor, intelligent headlamp fault treating apparatus there is eventWhen barrier, just carry out fault warning, and indicating intelligent head lamp system is forbidden stepper motor fortuneOK, while avoiding stepper motor to break down, proceed system initialization. Before intelligenceIn stage before illuminator system initialization, intelligent headlamp fault treating apparatus is not distinguished stepEnter the fault type of motor, if produce open fault, short trouble, excess temperature fault itsOne of in, alarm module is alarm, only shows stepper motor fault. Preferably, alarmModule is selected stand by lamp, for example, can utilize a normal bright expression stepper motor of stand by lampFault.
Step 104, indicating intelligent head lamp system carries out system initialization, so that initialAfter having changed, move intelligent head lamp system.
The fault that stepper motor chip do not detected when intelligent headlamp fault treating apparatus is believedNumber, illustrate that stepper motor state is normal, at the beginning of indicating intelligent head lamp system carries out systemBeginningization.
Concrete, when intelligent head lamp system carries out system initialization, control motor operationTo border stop, so that headlight resets to zero point (central point), and period error before eliminating,Thereby realize the initial alignment of stepper motor, the accumulated error of avoiding the operation of front subsystem withAnd mechanical factor causes actual playback and affects this fault judgement. Stepper motor dividesFor two kinds of horizontal motor and motor verticals, for horizontal motor, outside border stop isStop; For motor vertical, border stop is lower dead center.
Intelligence head lamp system carries out after system initialization completes, moving immediately before intelligenceIlluminator system.
Can find out by above-mentioned steps, before intelligent head lamp system initializes, firstCarry out stepper motor fault detect and judgement, make stepper motor fault verification more rapidly,Accurately, simply, continuing executive system and initialize while avoiding stepper motor fault, is more peopleProperty.
Step 105, in intelligent head lamp system running, detects intelligent headlampThe all types of input signals of system.
The normal work of intelligence head lamp system not only depends on the normal work of actuator,Also depend on the normal work of the components and parts such as switch, sensor, CAN bus, if theseComponents and parts break down, and also can produce great shadow to the normal work of intelligent head lamp systemRing, therefore, in intelligent head lamp system running, intelligent headlamp troubleshootingDevice should carry out fault detect and troubleshooting to stepper motor, again to switch, biographyThe signals such as sensor, CAN bus do fault detect and troubleshooting.
Intelligence headlamp fault treating apparatus can adopt DFEMA(DesignFailureModeandEffectsAnalysis, design error failure pattern and impact analysis) mode is rightIntelligence head lamp system fault is classified.
The input signal of intelligence head lamp system can comprise: switching signal, CAN busSignal, sensor signal and/or stepper motor signal. Switching signal can comprise: enableSwitching signal, reversing switch signal etc.; CAN bus signals can comprise: headlight letterNumber, brake signal, angular signal etc.; Sensor signal can comprise vehicle speed sensor letterNumber, the high sensor signal of axle etc.; Stepper motor signal can comprise: horizontal stepper motorSignal and vertical stepper motor signal.
In intelligent head lamp system running, switching signal, CAN bus signals,The input signals such as sensor signal, stepper motor signal can be according to default signals collectingCycle obtains. Intelligence headlamp fault treating apparatus first carries out battery tension sampling, soAfterwards according to default signal acquisition periods, gather each switching signal, CAN bus signals,Sensor signal and/or stepper motor chip detection signal, preferred, signal acquisition periodsPreferably be set to 10ms.
It should be noted that, in intelligent head lamp system running, stepper motor is adoptedWith partly walking method of operation operation, corresponding, intelligent headlamp fault treating apparatus is in stepEnter motor and partly walk under running status, gather stepper motor chip detection signal.
Step 106, according to described all types of input signals, judges all types of input signalsWhether fault of corresponding components and parts, if fault performs step 107; Otherwise, carry out stepRapid 105.
Concrete, the input signal that intelligent headlamp fault treating apparatus basis detects,Judge whether fault of components and parts that all types of input signals are corresponding, if fault is carried out phaseThe troubleshooting of answering; Otherwise, continue to detect input according to default signal acquisition periodsSignal. Wherein, the components and parts fault judgment mode that dissimilar input signal is corresponding is notBelow, elaborate respectively together.
For switching signal, mainly carry out switch adhesion or the judgement of overlap joint fault, i.e. intelligenceHeadlamp fault treating apparatus detects duration (as 500-1000ms) in default switching signalIn, the individual switching signal collecting is contrasted, if in the time that this switching signal detectsIn length, each switching signal is all identical, illustrates that the state of switch remains unchanged, and remainsAdhesion or overlap joint state, be judged as switch fault.
CAN fault is mainly points two kinds, and a kind of is that the twisted-pair feeder of CAN is out of question, butThe signal that is network is incorrect. The fault of a kind of CAN of being itself (can be called bus eventBarrier), may be CAN failure of chip, may be also the transmitting-receiving twisted-pair feeder (CAN of CANBus) disconnect. For CAN signal, can pass through codomain determining method or time domain determining methodRealize, for example, if intelligent headlamp fault treating apparatus is in a default CAN busIn detection duration, do not receive CAN bus signals, be judged as CAN bus failure.Or intelligent headlamp fault treating apparatus is by the angle letter of the rotary angle transmitter receivingNumber compare with default first threshold and Second Threshold, if total at the 2nd default CANLine for example detects, in duration (200ms), and the angle signal of rotary angle transmitter continues to be less thanMinimum of a value or continue to be greater than maximum, is judged as CAN bus signals fault, i.e. CANBus signals is incorrect.
For the sensor signal of analog input, the high sensor signal of for example axle, canRealize sensor signal (the high sensor of axle that is about to collect by definite value territory determining methodVoltage input signal) with default the 3rd threshold value (for example 0.5V) and the 4th threshold value (exampleAs 4.5V) compare, if the voltage input signal of the high sensor of axle is less than 0.5V or is greater than4.5V, intelligent headlamp fault treating apparatus can judge the high sensor error of shaft,And start counting, counter adds 1. In default sensor detects duration, statistics meterThe numerical value of number device record, if the numerical value of counter records is more than or equal to the 5th default thresholdValue (for example 50 times), is judged as the high sensor fault of axle.
For stepper motor signal, intelligent headlamp fault treating apparatus is in default executionDevice detects in duration, according to the stepper motor chip detection signal collecting, judges steppingWhether fault of motor, the stepper motor before its specific implementation and system initialization thereforeBarrier judges identical, does not repeat them here.
Further, in intelligent head lamp system running, if detect stepping electricityMachine fault, can also, according to the combination of stepper motor chip detection signal, further determineStepper motor fault type is short trouble, open fault or excess temperature fault. For example, intelligenceCan detect that stepper motor chip signal is 01, is judged as by headlamp fault treating apparatusOpen fault; If detect, stepper motor chip signal is 10, is judged as short trouble;If detect, stepper motor chip signal is 11, is judged as excess temperature fault.
After fault judgement, can further utilize diagnostic instrments to obtain intelligent headlampThe dependent failure of system and fault message, to carry out diagnosis communication.
Step 107, carries out corresponding troubleshooting.
Concrete, intelligent headlamp fault treating apparatus judges that intelligent head lamp system occursAfter fault, can, according to fault category, carry out corresponding troubleshooting.
For switch fault, intelligent headlamp fault treating apparatus indicating intelligent front lighting lamp systemSystem enables respective switch, for example, starts intelligent headlamp.
For CAN fault (bus failure or CAN signal are incorrect), for example, ifRotary angle transmitter fault, resets to horizontal motor and motor vertical, stops usingRotary angle transmitter signal, sends fault alarm; If CAN bus failure, obtains from wire harnessThe number of winning the confidence.
For sensor fault, for example, if vehicle speed sensor is due to the number obtaining from CANCause judging speed sensor failure according to incorrect, obtain signal from wire harness; If axle is highSensor fault, makes zero to motor vertical, then stops the action to motor vertical,Horizontal motor can remain in operation.
For stepper motor fault, stop immediately motor, for example, if the event of horizontal motorBarrier, stops sending horizontal motor rotation order immediately; If motor vertical fault, stopsOnly send the order of motor vertical running.
Further, in order to facilitate system maintenance personnel maintenance and handling failure in time, intelligenceCan judge the components and parts event that all types of input signals are corresponding by headlamp fault treating apparatusAfter barrier (be step 106 after), can also carry out alarm.
For cost-saving, simplified structure, preferred, can utilize a trouble light normalBright or utilize flicker frequency indication fault type. Preferably, can utilize trouble light Chang LiangRepresent stepper motor fault; Trouble light dodges expression switch fault slowly; Trouble light quick flashing representsSensor fault (for example vehicle speed sensor problem); Trouble light goes out and represents normally. ThisUtilize a trouble light normal bright or to utilize flicker frequency also can indicate out of order heavy outward,Want grade, in order to prompting maintainer directly perceived, for example, trouble light Chang Liangwei highest ranking,Trouble light quick flashing takes second place, and it is minimum that trouble light dodges grade slowly.
Can find out by above-mentioned steps 105-107, move at intelligent head lamp systemCheng Zhong, intelligent headlamp fault treating apparatus not only carries out stepper motor fault detect, andAnd also switch, CAN, sensor input signal are carried out to fault detect, make intelligenceThe scope of head lamp system fault detect is more comprehensive, ensured intelligent head lamp systemReliability.
In embodiments of the present invention, before intelligent head lamp system initializes, only to carrying outDevice stepper motor carries out fault detect, and stepper motor adopts synchronizing operation, to reach stepEnter the electrical fault object of identification rapidly. Before system initialization, to stepper motor faultDetect the judgement of also not doing fault type, not distinguish short-circuit fault, open fault or mistakeReviewing knowledge already acquired barrier, in order to avoid the stepper motor time of implementation is long, affects the function of system other parts.In intelligent head lamp system running, according to the signal input of intelligent head lamp system,Design error failure classification and fault important level, and corresponding troubleshooting strategy is set,In this stage, stepper motor adopts half step operation, to meet the requirement of system running precision.
The intelligent head lamp system troubleshooting scheme that the embodiment of the present invention provides is before intelligenceBefore illuminator system initialization and in system running, carry out respectively fault detect and locateReason can go out actuator failures by direct-detection before system initialization, made actuatorFault verification more rapidly, accurately, simple, in order to avoid actuator still enters while breaking downThe intelligent head lamp system of row initializes, humanized.
The embodiment of the present invention also provides a kind of intelligent head lamp system fault treating apparatus, asShown in Fig. 2, this device comprises:
Detection module 21 detected actuator before initializing at intelligent head lamp systemChip; And, in intelligent head lamp system running, detect intelligent front lighting lamp systemThe all types of input signals of system.
Control module 22, for the actuator chip inspection detecting according to detection module 21Survey signal, judge whether fault of actuator; If actuator failures, indicates alarm module23 alarms; Otherwise indicating intelligent head lamp system carries out system initialization operation; WithAnd in intelligent head lamp system running, what detect according to detection module 21 is eachType input signal, judges whether fault of components and parts that described all types of input signal is corresponding,If described components and parts fault, indicates processing module 24 to carry out corresponding troubleshooting.
Preferably, detection module 21 specifically for, under actuator synchronizing running status,Detect actuator chip.
Control module 22 also for, in the time judging described components and parts fault, instruction alarm mouldPiece 23 alarms.
Described alarm device specifically for, utilize the long bright or flicker frequency of 1 trouble light to refer toShow fault type.
Preferably, all types of input signals comprise: switching signal, controller local area networkCAN signal, sensor signal and/or actuator chip signal.
Detection module 21 specifically for, according to default signal acquisition periods, gather switchSignal, CAN bus signals, sensor signal and/or actuator chip signal; DescribedCAN bus signals also comprises the angle signal of rotary angle transmitter.
Control module 22 specifically for, when in default switching signal detects duration, adoptEach switching signal homogeneous phase that collection arrives simultaneously, is judged as switch fault; And/or
When detecting in duration in a default CAN bus, do not receive CAN busWhen signal, be judged as CAN bus failure; Or, detection module 21 is collectedThe angle signal of rotary angle transmitter is compared with default first threshold and Second Threshold, whenDetect in duration the angle signal of described rotary angle transmitter in the 2nd default CAN busContinue to be less than first threshold, or the angle signal of described rotary angle transmitter continues to be greater thanWhen Second Threshold, be judged as CAN bus signals fault; And/or
The sensor signal that detection module 21 is collected and default the 3rd threshold value and theFour threshold, in the time that sensor signal is less than the 3rd threshold value or is greater than the 4th threshold value,Make counter add 1; In default sensor detects duration, the number of statistical counter recordValue, and by the numerical value of counter records and the 5th threshold of presetting, work as counterWhen the numerical value of record is more than or equal to the 5th threshold value, be judged as sensor fault; And/or
Described actuator chip detection signal is 2 tunnel level signals, when the execution defaultDevice detects in duration, and in described 2 tunnel level signals, having 1 road signal at least is fault-signalTime, be judged as actuator failure of chip.
Preferably, all types of input signals of intelligent head lamp system comprise actuator chipSignal.
Control module 22 also for, in intelligent head lamp system running, judgeAfter actuator failures, before carrying out corresponding troubleshooting, believe according to actuator chipNumber combination, determine that actuator failures type is short trouble, open fault or crosses reviewing knowledge already acquiredBarrier.
Be understandable that, above embodiment is only used to illustrate principle of the present inventionAnd the illustrative embodiments adopting, but the present invention is not limited thereto. For abilityThose of ordinary skill in territory, in the situation that does not depart from spirit of the present invention and essenceUnder, can make various modification and improvement, these modification and improvement are also considered as of the present inventionProtection domain.
Claims (8)
1. an intelligent head lamp system fault handling method, is characterized in that, described sideMethod comprises:
Detect actuator chip, and according to actuator chip detection signal, judge actuatorWhether fault; If actuator failures, alarm; Otherwise, indicating intelligent head lamp systemCarry out system initialization operation;
In intelligent head lamp system running, detect all kinds of of intelligent head lamp systemType input signal, and according to described all types of input signals, judge described all types of inputWhether fault of components and parts corresponding to signal, if described components and parts fault is carried out correspondingTroubleshooting;
Described all types of input signal comprises: switching signal, the CAN of controller local area networkSignal, sensor signal and/or actuator chip signal;
The all types of input signals of the intelligent head lamp system of described detection, specifically comprise: rootAccording to default signal acquisition periods, gather switching signal, CAN bus signals, sensorSignal and/or actuator chip signal;
According to described all types of input signals, judge that described all types of input signal is correspondingWhether fault of components and parts, specifically comprises:
If in default switching signal detects duration, the each switching signal homogeneous phase collectingWith, be judged as switch fault; And/or
If detect in duration in a default CAN bus, do not receive CAN busSignal, is judged as CAN bus failure; Or, according to default signal acquisition periods,Gather the angle signal of rotary angle transmitter, and by the angle letter of the rotary angle transmitter receivingNumber compare with default first threshold and Second Threshold, if total at the 2nd default CANLine detects in duration, and the angle signal of described rotary angle transmitter continues to be less than first threshold,Or the angle signal of described rotary angle transmitter continues to be greater than Second Threshold, is judged asCAN bus signals fault; And/or
The sensor signal collecting is compared with the 4th threshold value with the 3rd default threshold value, if sensor signal is less than the 3rd threshold value or is greater than the 4th threshold value, counter adds 1;In default sensor detects duration, the numerical value of statistical counter record, and will countThe numerical value of device record and the 5th default threshold, if the numerical value of counter records is largeIn or equal the 5th threshold value, be judged as sensor fault; And/or
Described actuator chip detection signal is 2 tunnel level signals, if in default executionDevice detects in duration, and in described 2 tunnel level signals, having 1 road signal at least is fault-signal,Be judged as actuator failure of chip.
2. the method for claim 1, is characterized in that, described detection actuatorChip, is specially: under actuator synchronizing running status, detect actuator chip.
3. the method for claim 1, is characterized in that, described method also comprises:If described components and parts fault, alarm;
Described alarm specifically comprises: utilize 1 trouble light grow bright or utilize flicker frequency to refer toShow fault type.
4. the method for claim 1, is characterized in that, described intelligent headlampThe all types of input signals of system comprise actuator chip signal;
In intelligent head lamp system running, after judging actuator failures, enterBefore the corresponding troubleshooting of row, described method also comprises:
According to the combination of actuator chip signal, determine that actuator failures type is short circuit eventBarrier, open fault or excess temperature fault.
5. an intelligent head lamp system fault treating apparatus, is characterized in that, described dressPut and comprise:
Detection module detected actuator core before initializing at intelligent head lamp systemSheet; And, in intelligent head lamp system running, detect intelligent head lamp systemAll types of input signals;
Control module, for the actuator chip detection detecting according to described detection moduleSignal, judges whether fault of actuator; If actuator failures, indicates alarm module to accuseAlert; Otherwise indicating intelligent head lamp system carries out system initialization operation; And,In intelligent head lamp system running, what detect according to described detection module is all kinds ofType input signal, judges whether fault of components and parts that described all types of input signal is corresponding,If described components and parts fault, indicates processing module to carry out corresponding troubleshooting;
Described all types of input signal comprises: switching signal, the CAN of controller local area networkSignal, sensor signal and/or actuator chip signal;
Described detection module specifically for, according to default signal acquisition periods, collection is openedClose signal, CAN bus signals, sensor signal and/or actuator chip signal; DescribedCAN bus signals also comprises the angle signal of rotary angle transmitter;
Described control module specifically for, when in default switching signal detects duration,The each switching signal homogeneous phase collecting simultaneously, is judged as switch fault; And/or
When detecting in duration in a default CAN bus, do not receive CAN busWhen signal, be judged as CAN bus failure; Or, described detection module is collectedThe angle signal of rotary angle transmitter is compared with default first threshold and Second Threshold, whenDetect in duration the angle signal of described rotary angle transmitter in the 2nd default CAN busContinue to be less than first threshold, or the angle signal of described rotary angle transmitter continues to be greater thanWhen Second Threshold, be judged as CAN bus signals fault; And/or
The sensor signal that described detection module is collected and default the 3rd threshold value and theFour threshold, in the time that sensor signal is less than the 3rd threshold value or is greater than the 4th threshold value,Make counter add 1; In default sensor detects duration, the number of statistical counter recordValue, and by the numerical value of counter records and the 5th threshold of presetting, work as counterWhen the numerical value of record is more than or equal to the 5th threshold value, be judged as sensor fault; And/or
Described actuator chip detection signal is 2 tunnel level signals, when the execution defaultDevice detects in duration, and in described 2 tunnel level signals, having 1 road signal at least is fault-signalTime, be judged as actuator failure of chip.
6. device as claimed in claim 5, is characterized in that, described detection module toolBody is used for, and under actuator synchronizing running status, detects actuator chip.
7. device as claimed in claim 5, is characterized in that, described control module alsoBe used for, in the time judging described components and parts fault, indicate described alarm module alarm;
Described alarm module specifically for, utilize the long bright or flicker frequency of 1 trouble light to refer toShow fault type.
8. device as claimed in claim 5, is characterized in that, described intelligent headlampThe all types of input signals of system comprise actuator chip signal;
Described control module also for, in intelligent head lamp system running, judgementAfter going out actuator failures, before carrying out corresponding troubleshooting, according to actuator chipThe combination of signal, determines that actuator failures type is short trouble, open fault or excess temperatureFault.
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| CN105388432B (en) * | 2014-09-03 | 2018-08-21 | 常州星宇车灯股份有限公司 | Test method based on car light automatically testing platform |
| CN104777437B (en) * | 2015-03-31 | 2017-11-17 | 江苏大学 | A kind of LED automobile light fixture failure position finding and detection method based on Two Binomial Tree Model |
| CN105302699A (en) * | 2015-12-09 | 2016-02-03 | 浪潮电子信息产业股份有限公司 | Rack node fault warning method |
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