CN104192097A - Method for restoring normal operating states of automatic light changing device of vehicle - Google Patents
Method for restoring normal operating states of automatic light changing device of vehicle Download PDFInfo
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- CN104192097A CN104192097A CN201410481038.5A CN201410481038A CN104192097A CN 104192097 A CN104192097 A CN 104192097A CN 201410481038 A CN201410481038 A CN 201410481038A CN 104192097 A CN104192097 A CN 104192097A
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- vehicle
- automatic device
- changing light
- vehicle automatic
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Abstract
The invention discloses a method for restoring normal operating states of an automatic light changing device of a vehicle. The method is characterized in that resistance values or current values of headlamps of the vehicle are detected to obtain initial detection data once the automatic light changing device of the vehicle is mounted on the vehicle with the intact headlamps, and the initial detection data are stored in a memory of the automatic light changing device of the vehicle so as to be used as bases for later detection and comparison; the automatic light changing device of the vehicle determines that the headlamps of the vehicle are damaged if later measured resistance values or current values of the headlamps of the vehicle are obviously larger than or smaller than the initial detection data in the memory, so that the automatic light changing device of the vehicle enters a sleep state without transmitting light changing signals or executing light changing. The method has the advantages that the method is simple, reliable and feasible, and the shortcoming that normal operation of an existing automatic light changing device of a vehicle cannot be restored again can be overcome.
Description
Technical field
The present invention relates to automatic light changing device for vehicle after automobile front lamp damages, how to recover the method for normal working.
Background technology
The automobile of automatic device for changing light (automatic device for changing light of front headlight of motor vehicle as disclosed in patent of invention ZL200910225709.0, ZL200910225710.3) is installed, there is following functions: when vehicle meeting, wherein a vehicle is opened dipped beam, automatic device for changing light is launched wireless varying optical signal, Kaiyuan City, opposite light vehicle is received this varying optical signal, the automatic device for changing light of this car becomes light by execution makes far lighting automatically become lower beam illumination, makes two cars safety meeting in the situation that opening dipped beam.Meanwhile, for guaranteeing traffic safety, automatic device for changing light has self check defencive function, when detecting Der Scheinwerfer mit FernlichtAbblendlichtStandlicht, it damages, as: passing light damages, and system will enter dormant state automatically: automatic device for changing light is neither launched varying optical signal, also not carry out change light.Like this, can guarantee can not produce new potential safety hazard because being become light after motor-driven vehicle headlight adapter damages.If car owner pulls down the bulb of vehicle damage more and renews, existing automatic device for changing light cannot recover both can launch varying optical signal again, can be become by receiving varying optical signal again the normal working of light, the traffic safety hidden danger while still there is vehicle meeting.
Summary of the invention
The object of the invention is the problem existing for prior art, provide a kind of after headlight is changed vehicle automatic device for changing light recover the method for normal working, the traffic safety hidden danger when eliminating vehicle meeting.
Technical scheme of the present invention is achieved in that
The method that vehicle automatic device for changing light recovers normal working is:
When vehicle automatic device for changing light is arranged on the automobile that headlight is intact, the resistance value of automobile front lamp or current value are detected to acquisition initial detecting data, and initial detecting data are kept in vehicle automatic device for changing light memory device, as the foundation of late detection contrast;
If the resistance value of the automobile front lamp that the later stage measures or current value obviously increase or reduce than the initial detecting data in memory device, vehicle automatic device for changing light thinks that automobile front lamp damages, thereby the dormant state of entering, neither launches varying optical signal, do not carry out change light yet;
After damage automobile front lamp is replaced, again the resistance value of automobile front lamp or current value are detected to acquisition current detection data, by current detection data, substitute initial detecting data as new initial detecting data, then vehicle automatic device for changing light reenters normal working.
Described damage automobile front lamp is replaced after, vehicle automatic device for changing light need to, by receiving cue, just detect acquisition current detection data to the resistance value of automobile front lamp or current value again.
Described cue is for after checking that through traffic police confirmation automobile front lamp is intact, wireless signal by from traffic police to the transmitting of vehicle automatic device for changing light, or be the current switching signal of again powering again after the complete power-off of vehicle automatic device for changing light, or be under power supply state, change the level state of certain pin position of vehicle automatic device for changing light micro controller system.
In the present invention, for detection of the circuit of current value, comprise current detection module MC1001, micro controller system IC2, field effect transistor V, aerotron T, resistance R 1, R2, R3, passing light JD, the analog voltage mouth of current detection module MC1001 is connected with the p-n pin of micro controller system IC2, and be connected with A and D converter in micro controller system IC2, the p-m pin of micro controller system IC2 is connected with one end of resistance R 3, the other end of resistance R 3 is connected with the base stage of aerotron T, resistance R 1, the end that connects altogether of R2 is connected with the grid of field effect transistor V, the other end of resistance R 2 is connected with the collecting electrode of aerotron T, the source electrode of the current output terminal of the other end of resistance R 1 and current detection module MC1001 and field effect transistor V links together, the drain electrode of field effect transistor V is connected with the current input terminal of vehicle passing light JD, the power voltage terminal of current detection module MC1001 is connected with vehicle automatic device for changing light constant voltage power suspply, the current input terminal of current detection module MC1001 is connected with vehicle accumulator.
Beneficial effect of the present invention:
The vehicle of vehicle automatic device for changing light is installed, after damage automobile front lamp is replaced, again the resistance value of automobile front lamp or current value are detected to acquisition current detection data, by the alternative initial detecting data of current detection data and as new initial detecting data, then vehicle automatic device for changing light reenters normal working.The inventive method simply, reliably, is easily gone, and can overcome the defect that existing vehicle automatic device for changing light cannot recover normal work again.By cue, control vehicle automatic device for changing light and again recover normal work, can prevent that car owner from changing the automobile front lamp that does not meet vehicle management regulation, guarantees traffic safety.
Below in conjunction with embodiment, further illustrate technical scheme of the present invention.
Accompanying drawing explanation
Fig. 1 is that wireless launcher is to the schematic diagram of vehicle automatic device for changing light wireless signal emission.
Fig. 2 is the working state schematic representation of vehicle automatic device for changing light.
Fig. 3 is the another kind of working state schematic representation of vehicle automatic device for changing light.
Fig. 4 is for detection of the circuit diagram of current value in the present invention.
Fig. 5 is the circuit diagram of existing automatic device for changing light.
The specific embodiment
Embodiment 1
The method that vehicle automatic device for changing light recovers normal working is:
When vehicle automatic device for changing light is arranged on the automobile that headlight is intact, put within it under the control of program and automatically the resistance value of two automobile front lamps or current value are detected to acquisition initial detecting data, and initial detecting data are kept in vehicle automatic device for changing light memory device, as the foundation of late detection contrast;
If the resistance value of the automobile front lamp that the later stage measures or current value obviously increase or reduce than the initial detecting data in memory device, vehicle automatic device for changing light thinks that automobile front lamp damages, thereby the dormant state of entering, neither launches varying optical signal, do not carry out change light yet;
After damage automobile front lamp is replaced, vehicle automatic device for changing light detects acquisition current detection data to the resistance value of automobile front lamp or current value again, by current detection data, substitute initial detecting data as new initial detecting data, then vehicle automatic device for changing light reenters normal working.
Embodiment 2
On the basis of embodiment 1, after described damage automobile front lamp is replaced, vehicle automatic device for changing light need to, by receiving cue, just detect acquisition current detection data to the resistance value of automobile front lamp or current value again;
Described cue, for after checking that through traffic police confirmation automobile front lamp is intact, is passed through wireless launcher (inspection device) to the wireless signal of vehicle automatic device for changing light transmitting, as shown in Figure 1 by traffic police; Or be the current switching signal of again powering again after the complete power-off of vehicle automatic device for changing light, in Fig. 2, the switch k1 that connects vehicle automatic device for changing light micro controller system first disconnected, then be communicated with; Or be under power supply state, change the level state of certain pin position of vehicle automatic device for changing light micro controller system, in Fig. 3, change switch k2 position, can make micro controller system p-n pin become 0 level by high level, also can uprise level by 0 level.
Adopting cue to control vehicle automatic device for changing light detects the resistance value of automobile front lamp or current value again, be can not accurately reflect the actual conditions of changing automobile front lamp under certain conditions based on resistance value or current value, thereby affect the judgement of vehicle automatic device for changing light.Temperature influence as easy in resistance, even if add that the headlight power of different vendor is identical, resistance value is also variant, thereby car owner changes wherein one or two headlights, be difficult to guarantee the resistance value and the detection data consistent that is kept at memory device after replacing, thereby best mode is that vehicle automatic device for changing light is got after initial detecting data value again, then enter normal working.
And current value can run into this situation: with 12V power supply dolly for example, during mounting vehicle automatic device for changing light, this dolly passing light (two) power is 55W, wire and other component resistance are ignored, calculate theoretically, in memory device, current value data are 55 * 2 ÷ 12=9.17(peaces).When a low beam, at this moment, if car owner dislikes 55W bulb brightness inadequate, privately buy 2 100W bulbs and change, at this moment, measurement current value is: 100 * 2 ÷ 12=16.67(peaces), and with the data 9.7(peace of former memory device) compare, obviously not right.Because system is only found current value and is significantly less than in memory device data and just can be considered to headlight and damages, and car owner disorderly changes the bulb privately, obviously can cause system cannot correctly identify headlight quality.
Above-mentioned situation explanation is in order to prevent the erroneous judgement of vehicle automatic device for changing light, and best mode is got after initial detecting data value again by receiving cue startup vehicle automatic device for changing light exactly, then enters normal working.
Receive cue and adopt the mode of being launched by traffic police, its benefit is, if headlight damages, after car owner changes car light, must check and confirm that headlight is intact through traffic police, prevent car owner not as prescribed arbitrarily change automobile front lamp, be conducive to traffic safety.
In the present invention for detection of the circuit of current value as shown in Figure 4, comprise current detection module MC1001, micro controller system IC2, field effect transistor V, aerotron T, resistance R 1, R2, R3, passing light JD, the 1st pin (OUT) of current detection module MC1001 is analog voltage mouth, the 3rd pin (VDD) is power voltage terminal, the 9th pin (RS-) is current output terminal, and the 14th pin (RS+) is current input terminal, the 1st pin of current detection module MC1001 is connected with the p-n pin of micro controller system IC2, and be connected with A and D converter in micro controller system IC2, the p-m pin of micro controller system IC2 is connected with one end of resistance R 3, the other end of resistance R 3 is connected with the base stage of aerotron T, resistance R 1, the end that connects altogether of R2 is connected with the grid of field effect transistor V, the other end of resistance R 2 is connected with the collecting electrode of aerotron T, the 9th pin of the other end of resistance R 1 and current detection module MC1001 and the source electrode of field effect transistor V link together, the drain electrode of field effect transistor V is connected with the current input terminal of vehicle passing light JD, the 3rd pin of current detection module MC1001 is connected with vehicle automatic device for changing light constant voltage power suspply (5v), the 14th pin of current detection module MC1001 is connected with vehicle accumulator (12v).
The detection of concrete current value is as follows: vehicle automatic device for changing light installs, confirm that automobile front lamp is intact, the P-m pin output high level of system micro controller system IC2, by controlling aerotron T, make field effect transistor V conducting, voltage analog signal A and D converter in micro controller system IC2 that P-n pin gathers, become digital data, initial detecting data are kept in memory device, and the foundation contrasting as later image data.While not detecting passing light JD at ordinary times, the P-m pin of micro controller system IC2 output O level, makes field effect transistor V in off condition by controlling aerotron T, and passing light JD does not have the electric current of circuit after testing to be passed through.When detecting passing light, the P-m pin of micro controller system IC2 output high level, field effect transistor V conducting, the 14th pin received current of module MC1001, the 9th pin outgoing current, and the passing light JD that flows through.Because the 1st pin of MC1001 is analog voltage output, size of current that its size is inputted with the 14th pin is directly proportional.If passing light JD damages one, the electric current of the 14th pin input reduces half, the data of micro controller system P-n pin collection reduce half, through the primary data contrast with micro controller system internal memory, find obviously to reduce, system thinks that automobile dipped headlight damages, and vehicle automatic device for changing light enters dormant state, do not launch varying optical signal, constant light yet.
This current detection circuit can be used for the disclosed automatic device for changing light of ZL200910225710.3 patent of invention, substituted in this patent of invention physical circuit (referring to Fig. 5) by amplifier IC4(IC4-A, IC4-B), capacitor C 1, C2, the resistance detecting circuit that resistance hinders R4, R5, R6, R7, R11, R12, R13, R14, R17, R21 etc. to form.
Circuit for detection of resistance value in the present invention can adopt prior art, for example, in patent of invention ZL200910225709.0, just provide a kind of mode that detects headlight resistance.Its testing circuit is connected to form by amplifier IC, capacitor C and related resistors R.Under SCM program commander, this testing circuit amplifier output pin output high level, can detect respectively dipped beam, country beam resistance through the built-in AD conversion of micro controller system, and resistance data is recorded in memory device and is preserved.While detecting headlight, only initial detecting data in new measuring resistance data and memory device need be compared, if find, the new data of surveying obviously increase, and system thinks that headlight damages.
Claims (4)
1. a vehicle automatic device for changing light recovers the method for normal working, it is characterized in that: when described vehicle automatic device for changing light is arranged on the automobile that headlight is intact, the resistance value of automobile front lamp or current value are detected to acquisition initial detecting data, and initial detecting data are kept in vehicle automatic device for changing light memory device, as the foundation of late detection contrast;
If the resistance value of the automobile front lamp that the later stage measures or current value obviously increase or reduce than the initial detecting data in memory device, vehicle automatic device for changing light thinks that automobile front lamp damages, thereby the dormant state of entering, neither launches varying optical signal, do not carry out change light yet;
After damage automobile front lamp is replaced, again the resistance value of automobile front lamp or current value are detected to acquisition current detection data, by current detection data, substitute initial detecting data as new initial detecting data, then vehicle automatic device for changing light reenters normal working.
2. vehicle automatic device for changing light according to claim 1 recovers the method for normal working, it is characterized in that: described damage automobile front lamp is replaced after, vehicle automatic device for changing light need to, by receiving cue, just detect acquisition current detection data to the resistance value of automobile front lamp or current value again.
3. vehicle automatic device for changing light according to claim 2 recovers the method for normal working, it is characterized in that: described cue is for after checking that through traffic police confirmation automobile front lamp is intact, wireless signal by from traffic police to the transmitting of vehicle automatic device for changing light, or be the current switching signal of again powering again after the complete power-off of vehicle automatic device for changing light, or be under power supply state, change the level state of certain pin position of vehicle automatic device for changing light micro controller system.
4. the arbitrary described vehicle automatic device for changing light of claims 1 to 3 recovers in the method for normal working, for detection of a circuit for current value, to comprise current detection module MC1001, micro controller system IC2, field effect transistor V, aerotron T, resistance R 1, R2, R3, passing light JD, the analog voltage mouth of current detection module MC1001 is connected with the p-n pin of micro controller system IC2, and be connected with A and D converter in micro controller system IC2, the p-m pin of micro controller system IC2 is connected with one end of resistance R 3, the other end of resistance R 3 is connected with the base stage of aerotron T, resistance R 1, the end that connects altogether of R2 is connected with the grid of field effect transistor V, the other end of resistance R 2 is connected with the collecting electrode of aerotron T, the source electrode of the current output terminal of the other end of resistance R 1 and current detection module MC1001 and field effect transistor V links together, the drain electrode of field effect transistor V is connected with the current input terminal of vehicle passing light JD, the power voltage terminal of current detection module MC1001 is connected with vehicle automatic device for changing light constant voltage power suspply, the current input terminal of current detection module MC1001 is connected with vehicle accumulator.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410481038.5A CN104192097B (en) | 2014-09-19 | 2014-09-19 | A kind of vehicle automatic device for changing light recovers method and the circuit of normal working |
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| CN201410481038.5A CN104192097B (en) | 2014-09-19 | 2014-09-19 | A kind of vehicle automatic device for changing light recovers method and the circuit of normal working |
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| CN104192097B CN104192097B (en) | 2016-04-06 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5182502A (en) * | 1991-05-06 | 1993-01-26 | Lectron Products, Inc. | Automatic headlamp dimmer |
| CN101092122A (en) * | 2006-06-22 | 2007-12-26 | 赵立 | Automatic device for changing light of front headlight of motor vehicle |
| CN102069751A (en) * | 2009-11-23 | 2011-05-25 | 赵立 | Automatic luminosity-changing device for headlights of automotive vehicle |
-
2014
- 2014-09-19 CN CN201410481038.5A patent/CN104192097B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5182502A (en) * | 1991-05-06 | 1993-01-26 | Lectron Products, Inc. | Automatic headlamp dimmer |
| CN101092122A (en) * | 2006-06-22 | 2007-12-26 | 赵立 | Automatic device for changing light of front headlight of motor vehicle |
| CN102069751A (en) * | 2009-11-23 | 2011-05-25 | 赵立 | Automatic luminosity-changing device for headlights of automotive vehicle |
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