CN201742602U - Car lamp glaring preventing system based on laser digital phase measuring - Google Patents
Car lamp glaring preventing system based on laser digital phase measuring Download PDFInfo
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- CN201742602U CN201742602U CN2010202154586U CN201020215458U CN201742602U CN 201742602 U CN201742602 U CN 201742602U CN 2010202154586 U CN2010202154586 U CN 2010202154586U CN 201020215458 U CN201020215458 U CN 201020215458U CN 201742602 U CN201742602 U CN 201742602U
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Abstract
The utility model provides a car lamp glaring preventing system based on laser digital phase measuring which includes a laser emitting device, a laser receiving device and a signal processor; the signal processor includes a master oscillator, a phase shifter, a phase discriminator and a microprocessor which are connected in sequence; the master oscillator is connected with the laser emitting device; the laser receiving device is connected with the phase discriminator; and the microprocessor is connected with the control circuit of a car lamp. The car lamp glaring preventing system based on laser digital phase measuring has excellent glaring preventing effect and good coupling degree with cars, which can fundamentally reduce light pollution, and has the advantages like lower cost, etc.
Description
Technical field
The utility model belongs to anti-dazzling light technical field, particularly a kind of anti-dazzling light system that surveys phase based on laser digital.
Background technology
Along with popularizing of automobile, what its high beam caused dazzles the eyes phenomenon serious day by day, is threatening the person and traffic safety.In order to improve the phenomenon of dazzling the eyes that high beam causes, two kinds of technology of general employing, a kind of is to set about from improving light source, car light is improved design, another kind is by utilizing optical film technique, and to vehicle reflector, shadow shield carries out plated film, or the glasses of wearing for the driver with some material with special optical characteristic, to reduce pleasing to the eye luminous flux.Though this dual mode can reduce the generation of dazzling the eyes phenomenon effectively, and bigger limitation is all arranged.Dazzle the eyes phenomenon if improve the structure of car light with minimizing, many-sided factors such as Vehicle lamp structure and illuminance are subjected to the restriction of relevant rules again, the car light standard difference that different approaches is transformed, difficult popularizing, and car light improvement cost costliness; Various glasses glasses lens plated or the design special material in the car have just been reduced the luminous flux of injecting human eye, can not prevent the light pollution and the waste of energy greatly that cause by unnecessary high light from the source.
At above weak point, the someone has proposed a kind of automotive anti-glare monitoring system based on DSP, by the intense light source image information of utilizing the CCD camera collection to arrive, changes the light illumination mode of automobile immediately, thereby realizes the abblendbar purpose.Though this technology can be adjusted the light illumination mode of car light according to traffic, makes its automatic conversion, the cost height, system complex is subject to external interference, and is not high with the automobile degree of coupling.Therefore, need provide a kind of original equipment of automobile that can make to make the best use of everything, can solve the device of dazzling light problem again effectively at all.
The utility model content
For the shortcoming and deficiency that overcomes prior art, main purpose of the present utility model is a kind of simple and reasonable for structure, can survey by laser digital and measure spacing mutually, and survey the anti-dazzling light system of phase with effectively anti-dazzling light based on laser digital by microprocessor regulating and controlling vehicle light illumination condition.
The purpose of this utility model is achieved through the following technical solutions: the anti-dazzling light system that surveys phase based on laser digital, comprise laser beam emitting device, laser receiver and signal processing apparatus, described signal processing apparatus comprises master oscillator, phase shifter, phase discriminator and the microprocessor that connects successively, described master oscillator is connected with laser beam emitting device, described laser receiver is connected with phase discriminator, and described microprocessor is connected with the control circuit of car light.
Described laser beam emitting device comprises laser and the acousto-optic modulator that connects successively, and described acousto-optic modulator is connected with described master oscillator.
Described laser is a semiconductor laser, and laser emitted laser wavelength is 780～1080nm, and the sensitive wavelength of described photomultiplier and described Wavelength of Laser are complementary.
As preferably, described laser beam emitting device also comprises the transmitter-telescope that is connected with described acousto-optic modulator.
Described laser receiver comprises narrow band pass filter and the photomultiplier that connects successively, and described photomultiplier is connected with phase discriminator.
As preferably, described laser receiver also comprises the receiving telescope that is connected with described narrow band pass filter.
Described microprocessor is a digital signal processor.
Principle of the present utility model is: the utility model is launched laser by laser beam emitting device, and receives the laser that the front vehicles reflection comes by laser receiver; Be converted into the measurement signal of telecommunication by in the laser receiver laser that reflects being handled, again by phase discriminator will measure the signal of telecommunication handle be converted into this vehicle with head-on send a car or front vehicles apart from digital signal; By microprocessor according to comparing result default in distance digital signal and the microprocessor apart from the threshold values digital signal, thereby send corresponding signal, with the lighting system of regulating and controlling car light, thereby reach the effect of anti-dazzling light.
The utility model compared with prior art has following advantage and beneficial effect:
1, the utility model compared with prior art, anti-dazzle effect is superior, and is good with the automobile degree of coupling, can fundamentally reduce light pollution, cost is lower, has advantages such as environmental protection.
2, the utility model is provided with acousto-optic modulator in laser beam emitting device, can improve the output quality of laser greatly; In laser receiver, be provided with narrow band pass filter, can improve the sensitivity of receiving spectrum greatly, to obtain high-quality Laser Measurement; The utility model can improve the accuracy of range finding greatly by laser ranging.
3, the utility model is regulated control by microprocessor to the lighting system of car light intelligence, can improve degree of regulation greatly, and through evidence, the utility model only within 0.1m, can be realized anti-dazzle effect to the regulating error of vehicle light illumination very effectively.
4, the utility model has improved the collimation and the directivity of light beam by transmitter-telescope when emission laser; It is light modulated that the acousto-optic modulator modulator makes the laser that sends, and is not subject to interference of stray light; When accepting the laser that reflects, narrow band pass filter has improved the monochromaticjty of accepting light beam, can improve beam quality greatly.
5, the utility model is when accepting the laser that reflects, and receiving telescope makes has more light signal can enter photomultiplier, has increased receiving light power; And photomultiplier can be converted into the signal of telecommunication with faint optical signal, and sensitivity is higher, can improve the sensitivity of the vehicle distances of detection greatly.
Description of drawings
Fig. 1 is the general structure schematic diagram of the utility model system.
Fig. 2 is the course of work flow chart of system shown in Figure 1.
Fig. 3 is the another kind of structural representation of the utility model system.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
Embodiment 1
As shown in Figure 1, this surveys the anti-dazzling light system of phase based on laser digital, comprise laser beam emitting device, laser receiver and signal processing apparatus, described signal processing apparatus comprises master oscillator, phase shifter, phase discriminator and the microprocessor that connects successively, described master oscillator is connected with laser beam emitting device, described laser receiver is connected with phase discriminator, and described microprocessor is connected with the control circuit of car light.
Described laser beam emitting device comprises laser and the acousto-optic modulator that connects successively, and described acousto-optic modulator is connected with described master oscillator.
Described laser is a semiconductor laser.
Described laser receiver comprises narrow band pass filter and the photomultiplier that connects successively, and described photomultiplier is connected with phase discriminator.
Described microprocessor is a digital signal processor.
As shown in Figure 2, the course of work of said system specifically comprises the steps:
(1) microprocessor in the initializing signal processing unit is provided with apart from the threshold values digital signal;
(2) open laser beam emitting device, emission laser, on laser radiation vehicle forwardly, and by the vehicle reflection in the place ahead, specific as follows: by semiconductor laser emission laser to acousto-optic modulator; Laser is radiated on the vehicle in the place ahead after the acousto-optic modulator modulation again; Described acousto-optic modulator carries out feed control by the master oscillator in the signal processing apparatus;
(3) laser receiver receives the laser that the vehicle in the place ahead reflects back, and is translated into the measurement signal of telecommunication, and specific as follows: laser light reflected is converted into the measurement signal of telecommunication by photomultiplier more earlier via the spuious light of narrow band pass filter filtering;
(4) measure the signal of telecommunication through signal processing apparatus be converted between car light and the front vehicles apart from digital signal, and will be sent in the microprocessor of signal processing apparatus apart from digital signal, specific as follows:
(4-1) the master oscillator transmitted-reference signal of telecommunication, reference electrical signal is through the phase shifter phase shift;
(4-2) reference electrical signal after the phase shift is sent in the phase discriminator simultaneously in the measurement signal of telecommunication of described step (3) and the step (4-1), and phase discriminator carries out phase demodulation relatively to measuring the signal of telecommunication and reference electrical signal; When zero crossing appearred in phase discriminator, it is corresponding apart from digital signal that phase discriminator is exported between the described measurement signal of telecommunication and the reference electrical signal phase signal, and will be sent in the microprocessor apart from digital signal;
(5) microprocessor will and compare apart from the threshold values digital signal apart from digital signal;
(6) microprocessor to the car light regulating and controlling, is adjusted to dipped headlights illumination or high beam illumination according to the comparative result of described step (5), and is specific as follows:
(6-1) if apart from digital signal greater than distance threshold values digital signal, then car light is adjusted to high beam illumination;
(6-2) if apart from digital signal less than distance threshold values digital signal, then car light is adjusted to dipped headlights illumination.
The wavelength of laser emitted laser is 780nm, and the sensitive wavelength of described photomultiplier and described Wavelength of Laser be complementary, and is 780nm.
Embodiment 2
Present embodiment except that following characteristics other features with embodiment 1:
As shown in Figure 3, described laser beam emitting device comprises laser, acousto-optic modulator and the transmitter-telescope that connects successively, and described acousto-optic modulator is connected with described master oscillator.
Described laser receiver comprises receiving telescope, narrow band pass filter and the photomultiplier that connects successively, and described photomultiplier is connected with phase discriminator.
Described laser is a semiconductor laser, and the wavelength of laser emitted laser is 1080nm, and the sensitive wavelength of described photomultiplier and described Wavelength of Laser be complementary, and is 1080nm.
The system of present embodiment is when work, laser is after the acousto-optic modulator modulation in the step (2), adjust the collimation and the direction of laser beam earlier by transmitter-telescope, be radiated at again on the vehicle in the place ahead, that is, the Laser emission step of described step (2) is specific as follows: launch laser to acousto-optic modulator by semiconductor laser; Laser is after the acousto-optic modulator modulation, and collimation and direction through transmitter-telescope adjustment laser beam are radiated on the vehicle in the place ahead again.
The light of reflection is via before the narrow band pass filter in the step (3), adjust the collimation and the direction of laser beam earlier by receiving telescope, promptly, the step of described step (3) is specific as follows: the light of reflection is adjusted the collimation and the direction of laser beam earlier by receiving telescope, via the spuious light of narrow band pass filter filtering, be converted into the measurement signal of telecommunication by photomultiplier again.
The foregoing description is the utility model preferred implementation; but execution mode of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection range of the present utility model.
Claims (7)
1. survey the anti-dazzling light system of phase based on laser digital, it is characterized in that: comprise laser beam emitting device, laser receiver and signal processing apparatus, described signal processing apparatus comprises master oscillator, phase shifter, phase discriminator and the microprocessor that connects successively, described master oscillator is connected with laser beam emitting device, described laser receiver is connected with phase discriminator, and described microprocessor is connected with the control circuit of car light.
2. according to claim 1ly survey the anti-dazzling light system of phase based on laser digital, it is characterized in that: described laser beam emitting device comprises laser and the acousto-optic modulator that connects successively, and described acousto-optic modulator is connected with described master oscillator.
3. according to claim 2ly survey the anti-dazzling light system of phase based on laser digital, it is characterized in that: described laser is a semiconductor laser.
4. according to claim 2ly survey the anti-dazzling light system of phase based on laser digital, it is characterized in that: described laser beam emitting device also comprises the transmitter-telescope that is connected with described acousto-optic modulator.
5. according to claim 1ly survey the anti-dazzling light system of phase based on laser digital, it is characterized in that: described laser receiver comprises narrow band pass filter and the photomultiplier that connects successively, and described photomultiplier is connected with phase discriminator.
6. according to claim 5ly survey the anti-dazzling light system of phase based on laser digital, it is characterized in that: described laser receiver also comprises the receiving telescope that is connected with described narrow band pass filter.
7. according to claim 1ly survey the anti-dazzling light system of phase based on laser digital, it is characterized in that: described microprocessor is a digital signal processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202154586U CN201742602U (en) | 2010-05-31 | 2010-05-31 | Car lamp glaring preventing system based on laser digital phase measuring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202154586U CN201742602U (en) | 2010-05-31 | 2010-05-31 | Car lamp glaring preventing system based on laser digital phase measuring |
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| Publication Number | Publication Date |
|---|---|
| CN201742602U true CN201742602U (en) | 2011-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202154586U Expired - Fee Related CN201742602U (en) | 2010-05-31 | 2010-05-31 | Car lamp glaring preventing system based on laser digital phase measuring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870272A (en) * | 2010-05-31 | 2010-10-27 | 暨南大学 | Automobile lamp glaring prevention system and method based on laser digital phase determination |
-
2010
- 2010-05-31 CN CN2010202154586U patent/CN201742602U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870272A (en) * | 2010-05-31 | 2010-10-27 | 暨南大学 | Automobile lamp glaring prevention system and method based on laser digital phase determination |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20130531 |