CN103630852A - Fault processing method and device of intelligent headlamp system - Google Patents
Fault processing method and device of intelligent headlamp system Download PDFInfo
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Abstract
The invention provides a fault processing method and device of an intelligent headlamp system. Before the initialization of the intelligent headlamp system and in an operation process of the system, fault detection and processing are performed respectively, and the actuator fault can be directly detected before the system initialization, thus the actuator fault judgment is quicker, more accurate and simpler so as to avoid the phenomenon that the initialization of the intelligent headlamp system is still performed when the actuator fails, thereby being more humanized.
Description
Technical field
The invention belongs to automotive lighting technical field, be specifically related to a kind of intelligent head lamp system fault handling method and device.
Background technology
Along with the international and domestic concern to vehicle security drive aspect, intelligent head lamp system application is more and more extensive.Intelligence head lamp system generally adopts actuator integrated chip to drive.Existing intelligent head lamp system fault handling scheme, be in intelligent head lamp system operational process, judge whether fault of actuator, fault is classified, determine that actuator failures type belongs to horizontal direction and controls fault or vertical control fault, and carry out corresponding fault handling.
Yet existing intelligent head lamp system fault handling scheme, mainly stresses the fault treating procedure after fault detect, and the fault detect mode of actuator is not elaborated.In addition, according to the control mode of intelligent head lamp system, actuator is carried out to fault detect and judgement, cannot actuator failures be detected in the very first time, and localization of fault is inaccurate.
Therefore, need a kind of intelligent head lamp system fault handling scheme badly in order to address the above problem.
Summary of the invention
The embodiment of the present invention provides a kind of intelligent head lamp system fault handling method and device, in order to solve inaccurate, the fault handling problem not in time in existing intelligent head lamp system actuator failures location, realize accurate location and the fast processing of intelligent head lamp system fault.
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, and described method comprises:
Detect actuator chip, and according to actuator chip detection signal, judge whether fault of actuator; If actuator failures, alarm; Otherwise indicating intelligent head lamp system carries out system initialization operation;
In intelligent head lamp system operational process, detect all types of input signals of intelligent head lamp system, and according to described all types of input signals, judge whether fault of components and parts that described all types of input signal is corresponding, if described components and parts fault, carries out corresponding fault handling.
Preferably, described detection actuator chip, is specially: under actuator synchronizing running status, detect actuator chip.
Further, described method also comprises: if described components and parts fault, alarm;
Described alarm specifically comprises: utilize 1 trouble light long bright or utilize flicker frequency indication fault type.
Preferably, described all types of input signal comprises: switching signal, the CAN of controller local area network 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: according to default signal acquisition periods, gather switching signal, CAN bus signals, sensor signal and/or actuator chip signal;
Described according to described all types of input signals, judge whether fault of components and parts that described all types of input signal is corresponding, specifically comprise:
If in default switching signal detects duration, each switching signal collecting is all identical, is judged as switch fault; And/or
If detect in duration in a default CAN bus, do not receive CAN bus signals, be judged as CAN bus failure; Or, according to default signal acquisition periods, gather the angle signal of rotary angle transmitter, and the angle signal of the rotary angle transmitter receiving is compared with default first threshold and Second Threshold, if detect in duration in the 2nd default CAN bus, 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 as CAN bus signals fault; And/or
By the sensor signal collecting and the 3rd threshold value and the 4th threshold preset, 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 by the numerical value of counter records and the 5th threshold of presetting, if the numerical value of counter records 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, if in default actuator detects duration, in described 2 tunnel level signals, having 1 road signal at least is fault-signal, is judged as actuator failure of chip.
Preferably, all types of input signals of described intelligent head lamp system comprise actuator chip signal;
In intelligent head lamp system operational process, after judging actuator failures, before carrying out corresponding fault handling, described method also comprises:
According to the combination of actuator chip signal, determine that actuator failures type is short trouble, open fault or excess temperature fault.
The embodiment of the present invention also provides a kind of intelligent head lamp system fault treating apparatus, comprising:
Detection module, for detecting actuator chip before intelligent head lamp system initialization; And, in intelligent head lamp system operational process, detect all types of input signals of intelligent head lamp system;
Control module, for the actuator chip detection signal detecting according to described detection module, judges whether fault of actuator; If actuator failures, indicates alarm module alarm; Otherwise indicating intelligent head lamp system carries out system initialization operation; And, in intelligent head lamp system operational process, all types of input signals that detect according to described detection module, judge 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 fault handling.
Preferably, described detection module specifically for, under actuator synchronizing running status, detect actuator chip.
Further, described control module also for, when judgement is during described components and parts fault, indicate described alarm module alarm;
Described alarm device specifically for, utilize the long bright or flicker frequency indication fault type of 1 trouble light.
Preferably, described all types of input signal comprises: switching signal, the CAN of controller local area network signal, sensor signal and/or actuator chip signal;
Described detection module specifically for, according to default signal acquisition periods, gather switching signal, CAN bus signals, sensor signal and/or actuator chip signal; Described CAN bus signals also comprises the angle signal of rotary angle transmitter;
Described control module specifically for, when switching signal default detects in duration, each switching signal homogeneous phase collecting simultaneously, is judged as switch fault; And/or
When the CAN bus default detects in duration, while not receiving CAN bus signals, be judged as CAN bus failure; Or, the angle signal of the rotary angle transmitter that described detection module is collected is compared with default first threshold and Second Threshold, when the 2nd CAN bus default detects in duration, the angle signal of described rotary angle transmitter continues to be less than first threshold, or, when the angle signal of described rotary angle transmitter continues to be greater than Second Threshold, be judged as CAN bus signals fault; And/or
The sensor signal that described detection module is collected and the 3rd threshold value and the 4th threshold preset, when 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 numerical value of statistical counter record, and by the numerical value of counter records and the 5th threshold of presetting, when the numerical value of counter records 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 actuator default detects in duration, while having at least 1 road signal to be fault-signal in described 2 tunnel level signals, is judged as actuator failure of chip.
Preferably, all types of input signals of described intelligent head lamp system comprise actuator chip signal;
Described control module also for, in intelligent head lamp system operational process, after judging actuator failures, before carrying out corresponding fault handling, according to the combination of actuator chip signal, determine that actuator failures type is short trouble, open fault or excess temperature fault.
Compared with prior art, the above embodiment of the present invention has following useful technique effect:
The intelligent head lamp system fault handling scheme that the embodiment of the present invention provides is before intelligent head lamp system initialization and in system operational process, 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.
Accompanying drawing explanation
The intelligent front lighting lamp system troubleshooting process schematic diagram that Fig. 1 provides for the embodiment of the present invention;
The intelligent head lamp system fault treating apparatus structural representation that Fig. 2 provides for the embodiment of the present invention.
Embodiment
The problems referred to above that exist for prior art, the embodiment of the present invention provides a kind of intelligent head lamp system fault handling scheme, in order to realize accurate location and the fast processing of intelligent head lamp system fault.Below in conjunction with accompanying drawing, the embodiment of the present invention is described in detail.
Intelligence head lamp system is mainly comprised of following components: controller, actuator, sensor, CAN(Controller Area Network, controller local area network) bus and all kinds of switch.The actuator of intelligence head lamp system is selected stepper motor, and stepper motor can be in synchronizing and partly walked under two kinds of mode of operations and move, and synchronizing operational mode speed is fast, but precision is not high, is applicable to the occasion of the quick failure judgement of needs; Partly walk operational mode precision high, be applicable to accurately move occasion.
After intelligence head lamp system powers on, advanced line control unit MCU(Micro Control Unit, micro-control unit) initialization to enable the input/output function of controller, and is the global variable initialization of controller.
The embodiment of the present invention provides a kind of intelligent head lamp system fault treating apparatus, for the actuator of intelligent head lamp system and other input signals are carried out to fault detect and processing, this fault treating apparatus can comprise: detection module, control module, processing module and alarm module, wherein, detection module is for detection of actuator chip and all types of input signals; Control module judges whether fault of corresponding components and parts for signal that detection module is detected; Processing module is used for carrying out fault handling; Alarm module is for fault warning.
After controller initialization completes, intelligent headlamp fault treating apparatus can carry out intelligent head lamp system fault detect and processing.Utilize intelligent headlamp fault treating apparatus, these two stages before system initialization and in system operational process, carry out respectively fault detect and processing, not only actuator failures can be before system initialization, fast, accurately detected, actuator and switch, CAN bus, sensor input signal fault can also be in system operational process, detected.
Below in conjunction with Fig. 1, describe intelligent head lamp system troubleshooting process in detail, as shown in the 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 fault treating apparatus detects stepper motor chip.Now, stepper motor adopts synchronizing operation, and intelligent headlamp fault treating apparatus, under stepper motor synchronizing running status, detects stepper motor chip.
Stepper motor chip sends 2 road low and high level signals (for example, representing respectively with 0 or 1) by two pins, to indicate the state of stepper motor, for example, and " 1 " representing fault, " 0 " representative is normal.Intelligence headlamp fault treating apparatus, by default actuator sense cycle, detects the low and high level signal of two pins transmissions of stepper motor chip, and detecting stepper motor is fault or normal.
Step 102, according to stepper motor chip detection signal, judges whether fault of stepper motor, if fault performs step 103; Otherwise, perform step 104.
Concrete, the stepper motor chip signal that intelligent headlamp fault treating apparatus detects has following four kinds of combinations: 00,01,10,11, for example can distinguish corresponding normally, open fault, short trouble, four kinds of situations of excess temperature fault.Therefore, if in default actuator detects duration, in intelligence headlamp fault treating apparatus judgement stepper motor chip detection signal, there is at least one fault-signal (at least 1 high level signal 1 for example being detected), stepper motor fault is described, carry out alarm; If in default actuator detects duration, non-fault signal (high level signal for example not detected) in intelligent headlamp fault treating apparatus judgement stepper motor chip detection signal, illustrates that stepper motor state is normal, continues subsequent treatment.
Step 103, carries out fault warning.
Concrete, once intelligent headlamp fault treating apparatus judgement stepper motor, break down, just carry out fault warning, and indicating intelligent head lamp system forbids that stepper motor moves, and while avoiding stepper motor to break down, proceeds system initialization.Stage before intelligent head lamp system initialization, intelligence headlamp fault treating apparatus is not distinguished the fault type of stepper motor, as long as produce open fault, short trouble, excess temperature fault one of them, alarm module is alarm, only shows stepper motor fault.Preferably, alarm module is selected stand by lamp, for example, can utilize a normal bright expression stepper motor fault of stand by lamp.
Step 104, indicating intelligent head lamp system carries out system initialization, so that after initialization completes, move intelligent head lamp system.
When intelligent headlamp fault treating apparatus does not detect the fault-signal of stepper motor chip, illustrate that stepper motor state is normal, indicating intelligent head lamp system carries out system initialization.
Concrete, when intelligence head lamp system carries out system initialization, control motor and move to border stop, so that headlight resets to zero point (central point), and period error before eliminating, thereby realize the initial alignment of stepper motor, avoid the cumulative errors of front subsystem operation and mechanical factor to cause actual playback and affect this fault judgement.Stepper motor is divided into two kinds of horizontal motor and motor verticals, and for horizontal motor, border stop is outer dead point; For motor vertical, border stop is lower dead center.
Intelligence head lamp system carries out after system initialization completes, moving immediately intelligent head lamp system.
By above-mentioned steps, can find out, before intelligent head lamp system initialization, first carry out stepper motor fault detect and judgement, make stepper motor fault verification more rapidly, accurately, simply, while avoiding stepper motor fault, continue executive system initialization, humanized.
Step 105, in intelligent head lamp system operational process, detects all types of input signals of intelligent head lamp system.
The normal operation of intelligence head lamp system not only depends on the normal operation of actuator, also depend on the normal operation of the components and parts such as switch, sensor, CAN bus, if these components and parts break down, also can produce significant impact to the normal operation of intelligent head lamp system, therefore, in intelligent head lamp system operational process, intelligence headlamp fault treating apparatus should carry out fault detect and fault handling to stepper motor, again the signals such as switch, sensor, CAN bus is done to fault detect and fault handling.
Intelligence headlamp fault treating apparatus can adopt DFEMA(Design Failure Mode and Effects Analysis, design error failure pattern and impact analysis) mode, intelligent head lamp system fault is classified.
The input signal of intelligence head lamp system can comprise: switching signal, CAN bus signals, sensor signal and/or stepper motor signal.Switching signal can comprise: enable switch signal, reversing switch signal etc.; CAN bus signals can comprise: headlight signal, brake signal, angular signal etc.; Sensor signal can comprise vehicle speed sensor signal, the high sensor signal of axle etc.; Stepper motor signal can comprise: horizontal stepper motor signal and vertical stepper motor signal.
In intelligent head lamp system operational process, the input signals such as switching signal, CAN bus signals, sensor signal, stepper motor signal can obtain according to default signal acquisition periods.Intelligence headlamp fault treating apparatus first carries out battery tension sampling, then 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 periods is preferably set to 10ms.
It should be noted that, in intelligent head lamp system operational process, stepper motor adopts and partly walks method of operation operation, and corresponding, intelligent headlamp fault treating apparatus is partly to walk under running status at stepper motor, gathers stepper motor chip detection signal.
Step 106, according to described all types of input signals, judges whether fault of components and parts that all types of input signals are corresponding, if fault performs step 107; Otherwise, perform step 105.
Concrete, intelligent headlamp fault treating apparatus is according to the input signal detecting, and judges whether fault of components and parts that all types of input signals are corresponding, if fault is carried out corresponding fault handling; Otherwise, according to default signal acquisition periods, continue to detect input signal.Wherein, components and parts fault judgment mode corresponding to dissimilar input signal is different, below elaborates respectively.
For switching signal, mainly carry out switch adhesion or the judgement of overlap joint fault, be that intelligent headlamp fault treating apparatus is in default switching signal detects duration (as 500-1000ms), the individual switching signal collecting is contrasted, if in this switching signal detects duration, each switching signal is all identical, illustrates that the state of switch remains unchanged, remain adhesion or overlap joint state, be judged as switch fault.
CAN fault is mainly minutes two kinds, and a kind of is that the twisted-pair feeder of CAN is out of question, but the signal of network is incorrect.The fault of a kind of CAN of being itself (can be called bus failure), may be CAN failure of chip, may be also that the transmitting-receiving twisted-pair feeder (CAN bus) of CAN disconnects.For CAN signal, can realize by codomain determining method or time domain determining method, for example, if intelligent headlamp fault treating apparatus detects in duration in a default CAN bus, do not receive CAN bus signals, be judged as CAN bus failure.Or, intelligence headlamp fault treating apparatus is compared the angle signal of the rotary angle transmitter receiving with default first threshold and Second Threshold, for example, if detect in duration (200ms) in the 2nd default CAN bus, the angle signal of rotary angle transmitter continues to be less than minimum value or continues to be greater than maximal value, be judged as CAN bus signals fault, CAN bus signals is incorrect.
Sensor signal for analog input, the high sensor signal of axle for example, can realize by definite value territory determining method, the sensor signal that is about to collect (voltage input signal of the high sensor of axle) for example, for example, is compared with default the 3rd threshold value (0.5V) and the 4th threshold value (4.5V), if the voltage input signal of the high sensor of axle is less than 0.5V or is greater than 4.5V, intelligent headlamp fault treating apparatus can judge the high sensor error of shaft, and starts counting, and counter adds 1.In default sensor detects duration, the numerical value of statistical counter record, for example, if the numerical value of counter records is more than or equal to the 5th default threshold value (50 times), is judged as the high sensor fault of axle.
For stepper motor signal, intelligence headlamp fault treating apparatus is in default actuator detects duration, according to the stepper motor chip detection signal collecting, judge whether fault of stepper motor, its specific implementation is identical with the stepper motor fault judgement before system initialization, does not repeat them here.
Further, in intelligent head lamp system operational process, if detect stepper motor fault, can also, according to the combination of stepper motor chip detection signal, further determine that stepper motor fault type is short trouble, open fault or excess temperature fault.For example, it is 01 that intelligent headlamp fault treating apparatus detects stepper motor chip signal, is judged as open fault; If stepper motor chip signal detected, be 10, be judged as short trouble; If stepper motor chip signal detected, be 11, be judged as excess temperature fault.
After fault judgement, can further utilize diagnostic instrments to obtain dependent failure and the failure message of intelligent head lamp system, to carry out diagnosis communication.
Step 107, carries out corresponding fault handling.
Concrete, after intelligent headlamp fault treating apparatus judges that intelligent head lamp system breaks down, can, according to fault category, carry out corresponding fault handling.
For switch fault, intelligent headlamp fault treating apparatus indicating intelligent head lamp system enables respective switch, for example, starts intelligent headlamp.
For CAN fault (bus failure or CAN signal are incorrect), for example, if rotary angle transmitter fault resets to horizontal motor and motor vertical, stop using rotary angle transmitter signal, send fault alarm; If CAN bus failure, obtains signal from wire harness.
For sensor fault, for example, if causing judging because the data of obtaining from CAN are incorrect, vehicle speed sensor from wire harness, obtains signal by speed sensor failure; If the high sensor fault of axle, makes zero to motor vertical, then stop the action to motor vertical, horizontal motor can remain in operation.
For stepper motor fault, stop immediately motor, for example, if horizontal electrical fault stops sending horizontal motor rotation order immediately; If motor vertical fault, stops sending the order that motor vertical turns round.
Further, in order to facilitate system maintenance personnel maintenance and handling failure in time, intelligent headlamp fault treating apparatus, after judging the components and parts fault that all types of input signals are corresponding (after being step 106), can also carry out alarm.
For cost-saving, simplified structure, preferred, can utilize a trouble light normal bright or utilize flicker frequency indication fault type.Preferably, can utilize the normal bright expression stepper motor fault of trouble light; Trouble light dodges expression switch fault slowly; Trouble light quick flashing represents sensor fault (for example vehicle speed sensor problem); Trouble light goes out and represents normally.In addition, utilize a trouble light normal bright or utilize flicker frequency also can indicate out of order important level, in order to prompting maintainer directly perceived, for example, and trouble light Chang Liangwei highest ranking, trouble light quick flashing takes second place, and it is minimum that trouble light dodges grade slowly.
By above-mentioned steps 105-107, can find out, in intelligent head lamp system operational process, intelligence headlamp fault treating apparatus not only carries out stepper motor fault detect, but also switch, CAN, sensor input signal are carried out to fault detect, make the scope of intelligent head lamp system fault detect more comprehensive, guaranteed the reliability of intelligent head lamp system.
In embodiments of the present invention, before intelligent head lamp system initialization, only performer stepper motor is carried out to fault detect, stepper motor adopts synchronizing operation, to reach the stepper motor fault object of identification rapidly.Before system initialization, stepper motor fault detect is not done to the judgement of fault type yet, distinguish short-circuit fault, open fault or excess temperature fault, in order to avoid the stepper motor execution time is long, do not affect the function of system other parts.In intelligent head lamp system operational process, according to the signal input of intelligent head lamp system, design error failure classification and fault important level, and corresponding fault handling 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 fault handling scheme that the embodiment of the present invention provides is before intelligent head lamp system initialization and in system operational process, 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.
The embodiment of the present invention also provides a kind of intelligent head lamp system fault treating apparatus, and as shown in Figure 2, this device comprises:
Detection module 21, for detecting actuator chip before intelligent head lamp system initialization; And, in intelligent head lamp system operational process, detect all types of input signals of intelligent head lamp system.
Control module 22, for the actuator chip detection signal detecting according to detection module 21, judges whether fault of actuator; If actuator failures, indicates alarm module 23 alarms; Otherwise indicating intelligent head lamp system carries out system initialization operation; And, in intelligent head lamp system operational process, all types of input signals that detect according to detection module 21, judge 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 fault handling.
Preferably, detection module 21 specifically for, under actuator synchronizing running status, detect actuator chip.
Control module 22 also for, when judgement is during described components and parts fault, 23 alarms of indication alarm module.
Described alarm device specifically for, utilize the long bright or flicker frequency indication fault type of 1 trouble light.
Preferably, all types of input signals comprise: switching signal, the CAN of controller local area network signal, sensor signal and/or actuator chip signal.
Detection module 21 specifically for, according to default signal acquisition periods, gather switching signal, CAN bus signals, sensor signal and/or actuator chip signal; Described CAN bus signals also comprises the angle signal of rotary angle transmitter.
Control module 22 specifically for, when switching signal default detects in duration, each switching signal homogeneous phase collecting simultaneously, is judged as switch fault; And/or
When the CAN bus default detects in duration, while not receiving CAN bus signals, be judged as CAN bus failure; Or, the angle signal of the rotary angle transmitter that detection module 21 is collected is compared with default first threshold and Second Threshold, when the 2nd CAN bus default detects in duration, the angle signal of described rotary angle transmitter continues to be less than first threshold, or, when the angle signal of described rotary angle transmitter continues to be greater than Second Threshold, be judged as CAN bus signals fault; And/or
The sensor signal that detection module 21 is collected and the 3rd threshold value and the 4th threshold preset, when 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 numerical value of statistical counter record, and by the numerical value of counter records and the 5th threshold of presetting, when the numerical value of counter records 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 actuator default detects in duration, while having at least 1 road signal to be fault-signal in described 2 tunnel level signals, is judged as actuator failure of chip.
Preferably, all types of input signals of intelligent head lamp system comprise actuator chip signal.
Control module 22 also for, in intelligent head lamp system operational process, after judging actuator failures, before carrying out corresponding fault handling, according to the combination of actuator chip signal, determine that actuator failures type is short trouble, open fault or excess temperature fault.
Be understandable that, above embodiment is only used to principle of the present invention is described and the illustrative embodiments that adopts, yet the present invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, can make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.
Claims (10)
1. an intelligent head lamp system fault handling method, is characterized in that, described method comprises:
Detect actuator chip, and according to actuator chip detection signal, judge whether fault of actuator; If actuator failures, alarm; Otherwise indicating intelligent head lamp system carries out system initialization operation;
In intelligent head lamp system operational process, detect all types of input signals of intelligent head lamp system, and according to described all types of input signals, judge whether fault of components and parts that described all types of input signal is corresponding, if described components and parts fault, carries out corresponding fault handling.
2. the method for claim 1, is characterized in that, described detection actuator chip, 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 long bright or utilize flicker frequency indication fault type.
4. the method for claim 1, is characterized in that, described all types of input signals comprise: switching signal, the CAN of controller local area network 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: according to default signal acquisition periods, gather switching signal, CAN bus signals, sensor signal and/or actuator chip signal;
Described according to described all types of input signals, judge whether fault of components and parts that described all types of input signal is corresponding, specifically comprise:
If in default switching signal detects duration, each switching signal collecting is all identical, is judged as switch fault; And/or
If detect in duration in a default CAN bus, do not receive CAN bus signals, be judged as CAN bus failure; Or, according to default signal acquisition periods, gather the angle signal of rotary angle transmitter, and the angle signal of the rotary angle transmitter receiving is compared with default first threshold and Second Threshold, if detect in duration in the 2nd default CAN bus, 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 as CAN bus signals fault; And/or
By the sensor signal collecting and the 3rd threshold value and the 4th threshold preset, 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 by the numerical value of counter records and the 5th threshold of presetting, if the numerical value of counter records 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, if in default actuator detects duration, in described 2 tunnel level signals, having 1 road signal at least is fault-signal, is judged as actuator failure of chip.
5. the method for claim 1, is characterized in that, all types of input signals of described intelligent head lamp system comprise actuator chip signal;
In intelligent head lamp system operational process, after judging actuator failures, before carrying out corresponding fault handling, described method also comprises:
According to the combination of actuator chip signal, determine that actuator failures type is short trouble, open fault or excess temperature fault.
6. an intelligent head lamp system fault treating apparatus, is characterized in that, described device comprises:
Detection module, for detecting actuator chip before intelligent head lamp system initialization; And, in intelligent head lamp system operational process, detect all types of input signals of intelligent head lamp system;
Control module, for the actuator chip detection signal detecting according to described detection module, judges whether fault of actuator; If actuator failures, indicates alarm module alarm; Otherwise indicating intelligent head lamp system carries out system initialization operation; And, in intelligent head lamp system operational process, all types of input signals that detect according to described detection module, judge 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 fault handling.
7. device as claimed in claim 6, is characterized in that, described detection module specifically for, under actuator synchronizing running status, detect actuator chip.
8. device as claimed in claim 6, is characterized in that, described control module also for, when judgement is during described components and parts fault, indicate described alarm module alarm;
Described alarm device specifically for, utilize the long bright or flicker frequency indication fault type of 1 trouble light.
9. device as claimed in claim 6, is characterized in that, described all types of input signals comprise: switching signal, the CAN of controller local area network signal, sensor signal and/or actuator chip signal;
Described detection module specifically for, according to default signal acquisition periods, gather switching signal, CAN bus signals, sensor signal and/or actuator chip signal; Described CAN bus signals also comprises the angle signal of rotary angle transmitter;
Described control module specifically for, when switching signal default detects in duration, each switching signal homogeneous phase collecting simultaneously, is judged as switch fault; And/or
When the CAN bus default detects in duration, while not receiving CAN bus signals, be judged as CAN bus failure; Or, the angle signal of the rotary angle transmitter that described detection module is collected is compared with default first threshold and Second Threshold, when the 2nd CAN bus default detects in duration, the angle signal of described rotary angle transmitter continues to be less than first threshold, or, when the angle signal of described rotary angle transmitter continues to be greater than Second Threshold, be judged as CAN bus signals fault; And/or
The sensor signal that described detection module is collected and the 3rd threshold value and the 4th threshold preset, when 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 numerical value of statistical counter record, and by the numerical value of counter records and the 5th threshold of presetting, when the numerical value of counter records 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 actuator default detects in duration, while having at least 1 road signal to be fault-signal in described 2 tunnel level signals, is judged as actuator failure of chip.
10. device as claimed in claim 6, is characterized in that, all types of input signals of described intelligent head lamp system comprise actuator chip signal;
Described control module also for, in intelligent head lamp system operational process, after judging actuator failures, before carrying out corresponding fault handling, according to the combination of actuator chip signal, determine that actuator failures type is short trouble, open fault or excess temperature fault.
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| CN201310694711.9A CN103630852B (en) | 2013-12-17 | 2013-12-17 | A kind of intelligent head lamp system fault handling method and device |
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