CN206650758U - A kind of laser night-vision device - Google Patents
A kind of laser night-vision device Download PDFInfo
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- CN206650758U CN206650758U CN201621291419.8U CN201621291419U CN206650758U CN 206650758 U CN206650758 U CN 206650758U CN 201621291419 U CN201621291419 U CN 201621291419U CN 206650758 U CN206650758 U CN 206650758U
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Abstract
The utility model discloses a kind of laser night-vision device, including：Zoom lens, video camera, laser irradiating angle automatic linkage intelligent control circuit, Focusable laser collimator and extender camera lens, laser drive circuit, the semiconductor laser being sequentially connected.Technical scheme provided by the utility model is, laser lens are replaced by d.c. motor driving and position feedback elements are used as using precision potentiator, form closed loop controlling structure, and pass through pwm motor rotating speed, potentiometer is made with camera lens synchronous axial system by gear drive while motor driving camera lens rotates, the rotation of potentiometer can change its resistance value, microprocessor has unique corresponding relation by the resistance value of the potentiometer measured by analog to digital conversion circuit and the position of laser lens and laser irradiating angle, and the corresponding relation error is minimum and accumulated error is not present.
Description
Technical field
A kind of monitoring device is the utility model is related to, in particular to a kind of laser night-vision device.
Background technology
Laser night-vision device uses active laser infrared night vision technology, has good background reflectance, imaging clearly, is not shone by the external world
The features such as bright influence, turn black video camera using high-resolution low-light (level) is color, night can farthest find personnel at 3000 meters, car
, the target such as facility, and continuous monitoring round the clock can be realized.The lighting angle (laser irradiating angle) of commercially available main flow laser night-vision device
Predominantly adjust and two kinds of laser synchronization zoom manually.Regulation needs operating personnel to adjust laser manually according to the actual requirements manually
Irradiating angle, it is flexible and convenient to use, but labor intensive, it is not suitable for unattended type monitoring application；Laser synchronization zoom is then
Pass through microprocessor automatic data collection video camera current field angle, by matching corresponding relation between the two in advance, driving
Laser lens stepper motor rotates specific step number to realize synchronous zoom purpose, and its shortcoming mainly has：1st, stepper motor is open loop
Control, easily produces site error, and the margin of error can accumulate with the time, and the working time is more long, and accumulated error is bigger, so
Need often playback calibration, influence usage experience, 2, for ensure stepping motor smooth rotate, it is necessary to microprocessor it is continual to
Motor drive circuit sends pulse signal, and requires higher to the time interval between adjacent pulse, therefore uses stepper motor to drive
Flowing mode, therefore more microprocessor resources can be consumed.When the 3rd, needing to monitor a certain highest priority, laser irradiating angle can not
Control manually.
Accordingly, it is desirable to provide a kind of improved technical scheme meets the needs of prior art.
Utility model content
To avoid above-mentioned drawback, laser night-vision device is improved in the applicability of different application occasion, is avoided because of laser illumination angle
Accumulated error is spent, laser irradiating angle is excessive and makes that target illuminance is too low or laser irradiating angle is too small and makes light filling scope mistake
It is small, and counterweight syllabus target monitoring capacity is influenceed, the utility model provides a kind of improvement type of drive and using control manually
The technical scheme scheme adaptive with automatic linkage, to realize the purpose of this utility model.
The utility model uses following technical proposals：
A kind of laser night-vision device, it is characterised in that including：Zoom lens 4, video camera 5, the laser illumination angle being sequentially connected
Spend automatic linkage intelligent control circuit 2, Focusable laser collimator and extender camera lens 3, laser drive circuit 1 and semiconductor laser 6.
Further, the semiconductor laser 6 includes fiber coupled laser, space array laser and C-mount
Encapsulated laser.
Further, the Focusable laser collimator and extender camera lens 3 is constant focal length, changes focal position to adjust laser
Shooting angle, the closed loop being made up of d.c. motor and potentiometer control the laser emitting angle.
Further, the laser irradiating angle automatic linkage intelligent control circuit 2 and laser drive circuit 1 are to be integrated in
Same PCB or the circuit being integrated in respectively on two pieces of PCB.
Further, the laser irradiating angle automatic linkage intelligent control circuit 2 and laser drive circuit 1 include：Firmly
Part and software two parts.
Further, the hardware includes：Microprocessor, the motor of PWM mode speed governing and zoom signal, aperture signal
With RS485 input interfaces.
Further, the software includes：MANUAL CONTROL mode and automatic linkage pattern；The manual mode passes through aperture
Instruction control laser irradiating angle change；Automatic mode linkage includes being rapidly achieved matched position and low speed be accurate to up to
With two stages of position.
Compared with immediate prior art, the utility model has the advantages that：
1st, laser lens of the present utility model are replaced by d.c. motor driving and member are fed back using precision potentiator as position
Part, closed loop controlling structure is formed, and gear drive is passed through while rotation by pwm motor rotating speed, motor driving camera lens
Potentiometer is set to change its resistance value with camera lens synchronous axial system, the rotation of potentiometer, microprocessor passes through analog to digital conversion circuit institute
The resistance value of the potentiometer measured and the position of laser lens and laser irradiating angle have unique corresponding relation, the corresponding relation
Error is minimum and accumulated error is not present.
2nd, the utility model due to driving d.c. motor microprocessor only need to driving chip send start, terminates order and
Direction signal, reduce microprocessor work amount.
3rd, microprocessor of the present utility model is controlled by RS485 interfaces and zoom motor voltage real time monitoring signals zoom
Order, automatic linkage pattern is immediately switched to after microprocessor receives zoom control command, is monitored field of view angle in real time and is become
Change and drive laser lens to make the automatic tracking field of view angle change of laser irradiating angle, after zoom, which instructs, to be stopped, switching immediately
To MANUAL CONTROL mode, laser lens corresponding actions are controlled after receiving manual control commands.
Brief description of the drawings
Fig. 1 is the fundamental diagram of laser night-vision device；
Fig. 2 is the structured flowchart of laser night-vision device；
The pictorial diagram of Fig. 3 laser night-vision devices；
Wherein, 1- laser drive circuits, 2- laser irradiating angle automatic linkages intelligent control circuit, 3- Focusable lasers are accurate
Straight expander lens, 4- zoom lens, 5- video cameras, 6- semiconductor lasers.
Embodiment
This programme passes through monitoring and controlling command status, automatic switchover mode of operation using microprocessor as main control chip.Control
Part is encapsulated in same module with laser and laser lens.
Laser night vision technology belongs to one kind of active infrared night-viewing technology, main application model be without visible ray or
Actively launch under the weaker dark surrounds of visible ray and swash target illuminated, while target is received using the night vision camera lens of high pass light quantity
The laser imaging and output of reflection.At present, to realize the remote monitor under the conditions of night low-illumination, mainly near-infrared ripple is utilized
Section semiconductor laser carries out light filling, and this comes from the spy for the aspects such as laser itself monochromaticjty is good, the angle of divergence is small, brightness is high
Property.
Technical scheme provided by the utility model is elaborated below in conjunction with the accompanying drawings：
As shown in Figure 1, a) microprocessor is controlled by RS485 interfaces and zoom motor voltage real time monitoring signals zoom
Order, b) receive zoom control command after, microprocessor is immediately switched to automatic linkage pattern, c) analog-to-digital conversion microprocessor point
Cai Ji not camera lens zoom potentiometer resistance value corresponding with camera field of view angle and corresponding with laser irradiating angle
Laser lens potentiometer resistance, and compared according to camera lens model with the linkage data lookup table for being pre-stored within microprocessor internal,
Calculate the position offset of laser lens, d) control laser lens motor to turn to specified location at full speed according to offset.Then
Jumping to step a circulation above-mentioned steps, e) microprocessor received after zoom control ceases and desist order, the resistance of zoom potentiometer is gathered again
Value and laser lens potentiometer resistance, f) close to target location when, PWM speed regulating control motor low speed is accurate to up to matched position,
Site error is ± 1LSB, g) after position is accurate, mode of operation is immediately switched to MANUAL CONTROL mode, h) microprocessor is real
When monitoring input aperture instruction, and instruct control laser lens motor to perform corresponding actions according to aperture, reach control manually and put
Purpose that is big or reducing laser irradiating angle.Then jump to step a circulation above-mentioned steps.
As shown in Figure 3, the collection light drive circuit 1 is connected with semiconductor laser 6, for producing driving current, point
Bright wavelength is 800~1000nm laser；
The laser irradiating angle automatic linkage intelligent control circuit 2 is connected with Focusable laser collimator and extender camera lens 3, is used
In control laser works state and the angle of laser emitting hot spot；
The video camera 5 camera lens being installed in casing, daytime is realized for zoom to be connected with zoom lens 4
Night images for visible light wave range and the near of near infrared band image, remote monitor；
The semiconductor laser 6 produces laser beam using 800~1000nm laser and collimated with Focusable laser
Expander lens 2 connect, for providing infrared illumination source to video camera under night no light conditions.
Finally it should be noted that：Above example is merely to illustrate the technical scheme of the application rather than to its protection domain
Limitation, although the application is described in detail with reference to above-described embodiment, those of ordinary skill in the art should
Understand：Those skilled in the art read the embodiment of application can be still carried out after the application a variety of changes, modification or
Person's equivalent substitution, but these changes, modification or equivalent substitution, within the claims that application is given special approval to.
Claims (5)
- A kind of 1. laser night-vision device, it is characterised in that including：Zoom lens (4), video camera (5), the laser being sequentially connected irradiate Angle automatic linkage intelligent control circuit (2), Focusable laser collimator and extender camera lens (3), laser drive circuit (1) and semiconductor Laser (6).
- 2. a kind of laser night-vision device as claimed in claim 1, it is characterised in that the semiconductor laser (6) includes optical fiber Coupled laser, space array laser and C-mount encapsulated lasers.
- A kind of 3. laser night-vision device as claimed in claim 1, it is characterised in that the Focusable laser collimator and extender camera lens (3) it is constant focal length, changes focal position to adjust laser emitting angle, the closed loop being made up of d.c. motor and potentiometer Control the laser emitting angle.
- A kind of 4. laser night-vision device as claimed in claim 1, it is characterised in that the laser irradiating angle automatic linkage intelligence Control circuit (2) and laser drive circuit (1) are the circuit for being integrated in same PCB or being integrated in respectively on two pieces of PCB.
- A kind of 5. laser night-vision device as claimed in claim 4, it is characterised in that the laser irradiating angle automatic linkage intelligence Control circuit (2) and laser drive circuit (1) include：Microprocessor, the motor of PWM mode speed governing and zoom signal, aperture Signal and RS485 input interfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621291419.8U CN206650758U (en) | 2016-11-28 | 2016-11-28 | A kind of laser night-vision device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621291419.8U CN206650758U (en) | 2016-11-28 | 2016-11-28 | A kind of laser night-vision device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206650758U true CN206650758U (en) | 2017-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621291419.8U Active CN206650758U (en) | 2016-11-28 | 2016-11-28 | A kind of laser night-vision device |
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| CN (1) | CN206650758U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108040201A (en) * | 2017-11-27 | 2018-05-15 | 青岛浩海网络科技股份有限公司 | A kind of method of laser lens and visible light lens synchronous zoom |
| CN108234846A (en) * | 2018-01-08 | 2018-06-29 | 中国电子科技集团公司第十五研究所 | A kind of night vision device |
| CN111435973A (en) * | 2019-01-15 | 2020-07-21 | 杭州海康威视数字技术股份有限公司 | Laser camera |
| CN114939717A (en) * | 2022-04-02 | 2022-08-26 | 华工法利莱切焊系统工程有限公司 | High-power laser cutting head control system and method |
-
2016
- 2016-11-28 CN CN201621291419.8U patent/CN206650758U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108040201A (en) * | 2017-11-27 | 2018-05-15 | 青岛浩海网络科技股份有限公司 | A kind of method of laser lens and visible light lens synchronous zoom |
| CN108040201B (en) * | 2017-11-27 | 2020-02-18 | 青岛浩海网络科技股份有限公司 | Method for synchronously zooming laser lens and visible light lens |
| CN108234846A (en) * | 2018-01-08 | 2018-06-29 | 中国电子科技集团公司第十五研究所 | A kind of night vision device |
| CN111435973A (en) * | 2019-01-15 | 2020-07-21 | 杭州海康威视数字技术股份有限公司 | Laser camera |
| CN114939717A (en) * | 2022-04-02 | 2022-08-26 | 华工法利莱切焊系统工程有限公司 | High-power laser cutting head control system and method |
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