CN104192097B - A kind of vehicle automatic device for changing light recovers method and the circuit of normal working - Google Patents
A kind of vehicle automatic device for changing light recovers method and the circuit of normal working Download PDFInfo
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- CN104192097B CN104192097B CN201410481038.5A CN201410481038A CN104192097B CN 104192097 B CN104192097 B CN 104192097B CN 201410481038 A CN201410481038 A CN 201410481038A CN 104192097 B CN104192097 B CN 104192097B
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Abstract
The invention discloses method and circuit that a kind of vehicle automatic device for changing light recovers normal working, when described vehicle automatic device for changing light is arranged on the intact automobile of headlight, detection is carried out to the resistance value of automobile front lamp or current value and obtain 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 than the initial detecting data in memory device or reduce, namely vehicle automatic device for changing light thinks that automobile front lamp damages, thus enter dormant state, neither launch varying optical signal, also do not perform change light; The inventive method is simple, reliable, easy, can overcome the defect that existing vehicle automatic device for changing light cannot recover normal work again.
Description
Technical field
The present invention relates to automatic light changing device for vehicle after automobile front lamp damages, how to recover method and the circuit of normal working.
Background technology
The automobile of automatic device for changing light (disclosed in patent of invention ZL200910225709.0, ZL200910225710.3 automatic device for changing light of front headlight of motor vehicle) is installed, there is following functions: when vehicle meeting, wherein dipped beam opened by a vehicle, automatic device for changing light then launches wireless varying optical signal, opposite Kaiyuan City light vehicle receives this varying optical signal, execution is become light by the automatic device for changing light of this car makes far lighting automatically become lower beam illumination, makes two cars safety meeting when opening dipped beam.Meanwhile, for guaranteeing traffic safety, automatic device for changing light has self-inspection defencive function, when it detects that Der Scheinwerfer mit FernlichtAbblendlichtStandlicht damages, as: passing light damages, and system will enter dormant state automatically: automatic device for changing light neither launches varying optical signal, does not also perform change light.Like this, can guarantee that motor-driven vehicle headlight adapter can not because being produced new potential safety hazard by change light after damaging.More renew if the bulb of vehicle damage is pulled down by car owner, existing automatic device for changing light cannot recover both can launch varying optical signal again, being become the normal working of light again, still there is traffic safety hidden danger during vehicle meeting by receiving varying optical signal.
Summary of the invention
The object of the invention is for prior art Problems existing, provide a kind of and change method and the circuit that rear vehicle automatic device for changing light recovers normal working, to eliminate traffic safety hidden danger during vehicle meeting at headlight.
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 intact automobile of headlight, detection is carried out to the resistance value of automobile front lamp or current value and obtain 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 than the initial detecting data in memory device or reduce, namely vehicle automatic device for changing light thinks that automobile front lamp damages, thus enter dormant state, neither launch varying optical signal, also do not perform change light;
After damage automobile front lamp is replaced, again detection is carried out to the resistance value of automobile front lamp or current value and obtain current detection data, substitute initial detecting data as new initial detecting data by current detection 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 needs by receiving cue, just again carries out detections acquisition current detection data to the resistance value of automobile front lamp or current value.
Described cue is after traffic police checks that confirmation automobile front lamp is intact, the wireless signal launched to vehicle automatic device for changing light by traffic police, or be the current switching signal of again will power again after complete for vehicle automatic device for changing light power-off, or be under power supply state, change the level state of certain pin position of vehicle automatic device for changing light micro controller system.
For detecting the circuit of current value in the present invention, comprise current detection module MC1001, micro controller system IC2, field effect transistor V, aerotron T, resistance R1, 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 R3, the other end of resistance R3 is connected with the base stage of aerotron T, resistance R1, the connection end of R2 is connected with the grid of field effect transistor V, the other end of resistance R2 is connected with the collecting electrode of aerotron T, the other end of resistance R1 and the current output terminal of 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 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 detection is carried out to the resistance value of automobile front lamp or current value and obtain current detection data, initial detecting data are substituted and as new initial detecting data, then vehicle automatic device for changing light reenters normal working by current detection data.The inventive method is simple, reliable, easy, can overcome the defect that existing vehicle automatic device for changing light cannot recover normal work again.Control vehicle automatic device for changing light by cue and again recover normal work, the automobile front lamp that can prevent from car owner from changing not meeting vehicle management and specify, guarantee traffic safety.
Technical scheme of the present invention is further illustrated below in conjunction with embodiment.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of wireless launcher to 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 detecting the circuit diagram of current value in the present invention.
Fig. 5 is the circuit diagram of existing automatic device for changing light.
Detailed description of the invention
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 intact automobile of headlight, under putting the control of program within it, the automatic resistance value to two automobile front lamps or current value carry out detection 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 than the initial detecting data in memory device or reduce, namely vehicle automatic device for changing light thinks that automobile front lamp damages, thus enter dormant state, neither launch varying optical signal, also do not perform change light;
After damage automobile front lamp is replaced, vehicle automatic device for changing light again carries out detection to the resistance value of automobile front lamp or current value and obtains current detection data, substitute initial detecting data as new initial detecting data by current detection 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 needs by receiving cue, just again carries out detections acquisition current detection data to the resistance value of automobile front lamp or current value;
Described cue is after traffic police checks that confirmation automobile front lamp is intact, the wireless signal launched to vehicle automatic device for changing light by wireless launcher (inspection device) by traffic police, as shown in Figure 1; Or be the current switching signal of again will power again after complete for vehicle automatic device for changing light power-off, as in Fig. 2, the switch k1 connecting vehicle automatic device for changing light micro controller system first disconnected, then is 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, as in Fig. 3, change switch k2 position, micro controller system p-n pin can be made to become 0 level by high level, also can uprise level by 0 level.
Adopt cue to control vehicle automatic device for changing light again to detect the resistance value of automobile front lamp or current value, be accurately can not reflect based on resistance value or current value the actual conditions changing automobile front lamp under certain conditions, thus 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, thus car owner changes wherein one or two headlights, be difficult to ensure the resistance value after changing and the detection data consistent being kept at memory device, thus best mode is after making vehicle automatic device for changing light again get initial detecting data value, then enters normal working.
And current value can run into this situation: illustrate with 12V power supply dolly, 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 that 55 × 2 ÷ 12=9.17(pacify).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, measuring current value is: 100 × 2 ÷ 12=16.67(pacify), pacify with the data 9.7(of former memory device) compared with, obviously not right.Because system is only found current value and is significantly less than data in memory device and just can be considered to headlight and damages, and car owner disorderly changes the bulb privately, and system obviously can be caused correctly cannot to identify headlight quality.
Above-mentioned situation illustrates to prevent vehicle automatic device for changing light from judging by accident, after best mode gets initial detecting data value again by reception cue startup vehicle automatic device for changing light exactly, then enters normal working.
Receive cue adopts the mode of being launched by traffic police, its benefit is, if headlight damage, car owner by car light change after, must through traffic police check and confirmation headlight intact, prevent car owner not as prescribed arbitrarily change automobile front lamp, be conducive to traffic safety.
For detecting the circuit of current value as shown in Figure 4 in the present invention, comprise current detection module MC1001, micro controller system IC2, field effect transistor V, aerotron T, resistance R1, R2, R3, passing light JD, 1st pin (OUT) of current detection module MC1001 is analog voltage mouth, 3rd pin (VDD) is power voltage terminal, 9th pin (RS-) is current output terminal, and the 14th pin (RS+) is current input terminal, 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 R3, the other end of resistance R3 is connected with the base stage of aerotron T, resistance R1, the connection end of R2 is connected with the grid of field effect transistor V, the other end of resistance R2 is connected with the collecting electrode of aerotron T, the source electrode of the other end of resistance R1 and the 9th pin of 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, 3rd pin of current detection module MC1001 is connected with vehicle automatic device for changing light constant voltage power suspply (5v), 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 of system micro controller system IC2 exports high level, field effect transistor V conducting is made by controlling aerotron T, voltage analog signal A and D converter in micro controller system IC2 that P-n pin gathers, become digital data, initial detecting data are preserved in memory, and as the foundation that later image data contrasts.When not detecting passing light JD at ordinary times, the P-m pin of micro controller system IC2 exports O level, and make field effect transistor V be in off condition by controlling aerotron T, the electric current that passing light JD does not have circuit after testing passes through.When detecting passing light, the P-m pin of micro controller system IC2 exports high level, field effect transistor V conducting, the 14th pin received current of module MC1001, the 9th pin outgoing current, and flows through passing light JD.The 1st pin due to MC1001 is that analog voltage exports, and the size of current that its size inputs to the 14th pin is directly proportional.If passing light JD damages one, namely the electric current of the 14th pin input reduces half, namely the data of micro controller system P-n pin collection reduce half, through contrasting with the primary data of micro controller system internal memory, find obviously to reduce, namely system thinks that automobile dipped headlight damages, and namely vehicle automatic device for changing light enters dormant state, namely varying optical signal is not launched, also constant light.
This current detection circuit can be used for automatic device for changing light disclosed in ZL200910225710.3 patent of invention, substituted in this patent of invention physical circuit (see Fig. 5) by amplifier IC4(IC4-A, IC4-B), electric capacity C1, C2, the resistance detecting circuit that resistance hinders R4, R5, R6, R7, R11, R12, R13, R14, R17, R21 etc. to form.
Can prior art be adopted for the circuit of detection resistance value in the present invention, such as, in patent of invention ZL200910225709.0, just provide a kind of mode detecting headlight resistance.Its testing circuit is connected to form by amplifier IC, electric capacity C and related resistors R.Under SCM program commander, this testing circuit amplifier output pin exports high level, can detect dipped beam, country beam resistance respectively, and preserved in memory by resistance data record through the built-in AD conversion of micro controller system.When detecting headlight, only initial detecting data in new measuring resistance data and memory device need be compared, if find, new data of surveying obviously increase, and system then thinks that headlight damages.
Claims (2)
1. the method for a vehicle automatic device for changing light recovery normal working, when described vehicle automatic device for changing light is arranged on the intact automobile of headlight, detection is carried out to the resistance value of automobile front lamp or current value and obtain 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 than the initial detecting data in memory device or reduce, namely vehicle automatic device for changing light thinks that automobile front lamp damages, thus enter dormant state, neither launch varying optical signal, also do not perform change light; It is characterized in that: after damage automobile front lamp is replaced, after traffic police checks that confirmation automobile front lamp is intact, by traffic police to vehicle automatic device for changing light wireless signal emission, system is again carried out detection to the resistance value of automobile front lamp or current value and is obtained current detection data, substitute initial detecting data as new initial detecting data by current detection data, then vehicle automatic device for changing light reenters normal working.
2. vehicle automatic device for changing light according to claim 1 to recover in the method for normal working, for detecting a circuit for current value, to comprise current detection module MC1001, micro controller system IC2, field effect transistor V, aerotron T, resistance R1, 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 R3, the other end of resistance R3 is connected with the base stage of aerotron T, resistance R1, the connection end of R2 is connected with the grid of field effect transistor V, the other end of resistance R2 is connected with the collecting electrode of aerotron T, the other end of resistance R1 and the current output terminal of 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 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 |
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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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| 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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| CN104192097A CN104192097A (en) | 2014-12-10 |
| CN104192097B true 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 |
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2014
- 2014-09-19 CN CN201410481038.5A patent/CN104192097B/en not_active Expired - Fee Related
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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| CN104192097A (en) | 2014-12-10 |
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