CN208569273U - Laser auxiliary lighting system - Google Patents
Laser auxiliary lighting system Download PDFInfo
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- CN208569273U CN208569273U CN201821191634.XU CN201821191634U CN208569273U CN 208569273 U CN208569273 U CN 208569273U CN 201821191634 U CN201821191634 U CN 201821191634U CN 208569273 U CN208569273 U CN 208569273U
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- drive circuit
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Abstract
The utility model relates to a kind of laser auxiliary lighting systems, including laser drive circuit, laser and laser facula homogenizer, the pulse control signal output end of the triggering end connection image capture device of the laser drive circuit, the laser drive circuit output end connects the laser, the light beam that the laser facula homogenizer is set to the laser issues front, and the light beam that the laser issues penetrates the laser facula homogenizer.The laser auxiliary lighting system improves system effectiveness, reduces system power dissipation.
Description
Technical field
The utility model relates to a kind of lighting areas, and in particular to a kind of laser auxiliary lighting system.
Background technique
In recent years, with the fast development of urban track traffic infrastructure construction cause, subway tunnel safety and road
Health evaluating and real-time monitoring become increasingly important.The country, to tunnel monitoring mostly using image capture device Image Acquisition point
The method of analysis.But ambient light illumination is low in tunnel, it is necessary to carry out floor light to environment in tunnel.LED is because of luminous efficiency
Up to 100Lm/W becomes the preferred option of image capture device floor light.
However, there are two big difficult points for LED floor light:
1) LED illumination System power consumption is high, low efficiency
Nowadays tunnel Image Acquisition mostly uses LED to carry out floor light.LED luminous efficiency is about 100Lm/W, in order to protect
The enough light exposures of image capture device are demonstrate,proved, under LED continuous operation mode, power consumption is up to kW even 10kW rank.This is to rail
It is a huge burden for the energy supply of road monitoring car.This is a great problem that current floor light must solve.
2) LED illumination is larger by environment and illumination effect
LED illumination is wider because of its luminescence spectrum and is in tunnel illumination spectral region, is difficult technically to prevent
Influence of the environment light to image capture device.The serious image capture device that results even in is over-exposed, causes acquisition image
Quality degradation.Simultaneously because its emission spectrum is wider, image capture device acquired image is difficult to similar target
It is identified, such as infiltration and oil leak.It is unable to satisfy the requirement that system screens tunnel health status.
Utility model content
In order to overcome above-mentioned defect existing in the prior art, the purpose of the utility model is to provide a kind of low in energy consumption to swash
Light auxiliary lighting system.
To achieve the goals above, the utility model provides a kind of laser auxiliary lighting system, including Laser Driven electricity
Road, laser and laser facula homogenizer, the triggering letter of the triggering end connection image capture device of the laser drive circuit
Number output end, the laser drive circuit output end connect the laser, and the laser facula homogenizer, which is set to, described to swash
The light beam of light device issues front, and the light beam that the laser issues penetrates the laser facula homogenizer.
After laser drive circuit receives the trigger signal of image capture device sending, driving laser is started to work.Its
LED pulse width and intensity are by external trigger pulse control.Because lasing fluorescence efficiency is about twice of LED luminous efficiency, because
This, to same system, using laser light source compared with LED light source for, can greatly improve system effectiveness, reduce system power dissipation.
Meanwhile laser beam overcomes the poor problem of uniformity of laser beam, meets image after the rearrangement of laser facula homogenizer
Acquisition system needs.
Further, described image acquisition equipment includes master control borad and sequence controller, the master control borad output end connection
The trigger signal output end of the sequence controller, the master control borad connects the sequence controller trigger signal input terminal, institute
The laser delays time to control output end for stating sequence controller connects the laser drive circuit triggering end, and the master control borad is by regulation
Time interval to the sequence controller send trigger signal, after the sequence controller receives trigger signal, to laser
Device is triggered.
Further, described image acquisition equipment further includes image acquisition units, and the camera of the sequence controller prolongs
When control output end connect described image acquisition unit triggering end, the master control borad is by predetermined time interval to the timing control
Device processed sends trigger signal, synchronous to trigger the laser and Image Acquisition after the sequence controller receives trigger signal
Unit.
Using the synchronous triggering laser of sequence controller and image acquisition units, be conducive to preferably in image capture device
Enough light exposures are provided when work for image acquisition units.
Further, the laser drive circuit includes first resistor, pull-up resistor, first capacitor, the second capacitor and field
Effect pipe；
The pulse control signal output end of described image acquisition equipment connects one end of the first resistor and first capacitor,
The other end of the first resistor and first capacitor is all connected with the grid of the field-effect tube, the drain electrode connection of the field-effect tube
One end of the pull-up resistor, the other end of the upper connecting resistance connect power supply VCC, and described first capacitor one end connects power supply
VCC, other end ground connection；The driving end of the source electrode connecting laser of the field-effect tube.The circuit structure is simple, production cost
It is low.
Preferably, the laser facula homogenizer is lenticule.It compares with traditional homogenisation techniques, is homogenized using lenticule
It can make laser facula distribution energy more evenly, be more advantageous to the work of image capture device.And for image capture device
The size of horizontal and vertical visual field, light spot shape can also be changed by the design of lenticule, eliminate traditional homogenisation techniques
Circular light spot is greater than the optical energy loss of visual field, so that light source utilization efficiency is higher.
The beneficial effects of the present invention are: the laser auxiliary lighting system passes through figure within the image capture device time for exposure
As acquisition equipment progress external trigger, system effectiveness can be improved, reduce system power dissipation.In addition laser emission spectrum is narrow, on the one hand,
It can prevent the influence of environment light using the means that wavelength filters；On the other hand, because various substances are to the light of various wavelength
Absorptivity is different, such as water and oil, tonal gradation meeting that they on image capture device be imaged different to the absorptivity of laser
There is certain difference, so as to screen in itself to different material.Furthermore because spectrum is relatively narrow, in addition to utilizing tradition
Geometric optics method carry out outside beam shaping, can also be using physioptial diffraction theory to the progress of the Energy distribution of hot spot
It resets, reaches the basic demand of auxiliary lighting system Uniform Illumination.
The additional aspect and advantage of the utility model will be set forth in part in the description, partially will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will
Become obvious and be readily appreciated that, in which:
Fig. 1 is the principles of the present invention block diagram；
Fig. 2 is laser drive circuit；
Fig. 3 is the schematic diagram of the preferred embodiment of embodiment.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, unless otherwise specified and limited, it should be noted that term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be mechanical connection or electrical connection, the company being also possible to inside two elements
It is logical, it can be directly connected, can also indirectly connected through an intermediary, for the ordinary skill in the art, it can
To understand the concrete meaning of above-mentioned term as the case may be.
A kind of laser auxiliary lighting system as shown in Figure 1, including laser drive circuit, laser and laser facula are even
Change device, the trigger signal output end of the triggering end connection image capture device of the laser drive circuit, the Laser Driven electricity
Road output end connects the driving end of the laser, and the light beam that the laser facula homogenizer is set to the laser issues just
Front, the light beam that the laser issues penetrate the laser facula homogenizer.
Wherein, as shown in Fig. 2, laser drive circuit includes first resistor R1, pull-up resistor RX, first capacitor C1, second
Capacitor C2, field-effect tube Q and diode D1；
The pulse control signal output end of described image acquisition equipment connects the first resistor R1's and first capacitor C1
The other end of one end, the first resistor R1 and first capacitor C1 are all connected with the grid of the field-effect tube Q, the field-effect tube
The drain electrode of Q connects one end of the pull-up resistor RX, and the other end of the upper connecting resistance RX connects power supply VCC, first electricity
Hold the one end C1 and connects power supply VCC, other end ground connection；The driving end of the source electrode connecting laser LD of the field-effect tube Q, laser
The ground terminal of LD is grounded, and the cathode of diode D1 connects the source electrode of field-effect tube Q, the plus earth of diode D1.
After laser drive circuit receives image capture device sending trigger signal, driving laser is started to work.Because
Lasing fluorescence efficiency is about twice of LED luminous efficiency, this greatly improves system effectiveness, reduces system power dissipation.Triggering letter
Number generally be mostly pulse signal.Such as: to same system, the if desired LED illumination of 2000W, then needed for Laser emission peak
Value power is about 1000W, and with the image capture device time for exposure for 300 μ s, image acquisition rates are 30FPS calculating, power consumption
About 9W, about the 0.5% of 2000WLED lighting system.
In the present embodiment, laser facula homogenizer is preferably but not limited to as lenticule, and wherein lenticule is preferably but not limited to
For diffraction microlens array.After being reset using diffraction microlens array, laser facula heterogeneity is about 5%, meets image and adopts
Collecting system needs.
As the preferred embodiment of the present embodiment, as shown in figure 3, described image acquisition equipment includes master control borad, timing control
Device and image acquisition units, the master control borad output end connect the sequence controller, the trigger signal output of the master control borad
End connects the sequence controller trigger signal input terminal, and the laser delays time to control output end of the sequence controller connects institute
State laser drive circuit triggering end, the camera delays time to control output end connection described image acquisition unit touching of the sequence controller
Originator, the master control borad send trigger signal to the sequence controller by predetermined time interval, and the sequence controller connects
It is synchronous to trigger the laser and image acquisition units after receiving trigger signal.In specific implementation, sequence controller uses 51
Single-chip microcontroller but it is not limited to the realization of 51 series monolithics, image acquisition units at least one group, every group of image acquisition units include two
A camera, two cameras are synchronous to carry out tunnel Image Acquisition, and laser provides light source for it, and master control borad can also be carried out with server
Connection, realizes the interaction of information.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
Stating may not refer to the same embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be
It can be combined in any suitable manner in any one or more embodiment or examples.
While there has been shown and described that the embodiments of the present invention, it will be understood by those skilled in the art that:
These embodiments can be carried out with a variety of variations, modification, replacement in the case where not departing from the principles of the present invention and objective
And modification, the scope of the utility model are defined by the claims and their equivalents.
Claims (5)
1. a kind of laser auxiliary lighting system, which is characterized in that homogenized including laser drive circuit, laser and laser facula
Device, the trigger signal output end of the triggering end connection image capture device of the laser drive circuit, the laser drive circuit
Output end connects the laser, and the light beam that the laser facula homogenizer is set to the laser issues front, described
The light beam that laser issues penetrates the laser facula homogenizer.
2. laser auxiliary lighting system according to claim 1, which is characterized in that it includes master control that described image, which acquires equipment,
Plate and sequence controller, the master control borad output end connect the sequence controller, the trigger signal output end of the master control borad
The sequence controller trigger signal input terminal is connected, described in the laser delays time to control output end connection of the sequence controller
Laser drive circuit triggering end, the master control borad send trigger signal, institute to the sequence controller by predetermined time interval
It states after sequence controller receives trigger signal, laser is triggered.
3. laser auxiliary lighting system according to claim 2, which is characterized in that it further includes figure that described image, which acquires equipment,
As acquisition unit, the camera delays time to control output end of the sequence controller connects described image acquisition unit triggering end, described
Master control borad sends trigger signal to the sequence controller by predetermined time interval, and the sequence controller receives triggering letter
It is synchronous to trigger the laser and image acquisition units after number.
4. laser auxiliary lighting system according to claim 1, which is characterized in that the laser drive circuit includes first
Resistance, pull-up resistor, first capacitor, the second capacitor and field-effect tube；
The pulse control signal output end of described image acquisition equipment connects one end of the first resistor and first capacitor, described
The other end of first resistor and first capacitor is all connected with the grid of the field-effect tube, described in the drain electrode connection of the field-effect tube
One end of pull-up resistor, the other end of the pull-up resistor connect power supply VCC, and described first capacitor one end connects power supply VCC, separately
One end ground connection；The source electrode of the field-effect tube connects the driving end of the laser.
5. laser auxiliary lighting system according to claim 1, which is characterized in that the laser facula homogenizer is micro-
Mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821191634.XU CN208569273U (en) | 2018-07-26 | 2018-07-26 | Laser auxiliary lighting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821191634.XU CN208569273U (en) | 2018-07-26 | 2018-07-26 | Laser auxiliary lighting system |
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| Publication Number | Publication Date |
|---|---|
| CN208569273U true CN208569273U (en) | 2019-03-01 |
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ID=65448084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201821191634.XU Active CN208569273U (en) | 2018-07-26 | 2018-07-26 | Laser auxiliary lighting system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113758681A (en) * | 2021-08-16 | 2021-12-07 | 昆山丘钛微电子科技股份有限公司 | Module lighting driving device and machine table |
-
2018
- 2018-07-26 CN CN201821191634.XU patent/CN208569273U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113758681A (en) * | 2021-08-16 | 2021-12-07 | 昆山丘钛微电子科技股份有限公司 | Module lighting driving device and machine table |
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