CN101241189A - Two-dimensional scanning laser collision avoidance radar system - Google Patents
Two-dimensional scanning laser collision avoidance radar system Download PDFInfo
- Publication number
- CN101241189A CN101241189A CNA2008100147180A CN200810014718A CN101241189A CN 101241189 A CN101241189 A CN 101241189A CN A2008100147180 A CNA2008100147180 A CN A2008100147180A CN 200810014718 A CN200810014718 A CN 200810014718A CN 101241189 A CN101241189 A CN 101241189A
- Authority
- CN
- China
- Prior art keywords
- laser
- scanning
- radar
- employs
- controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The present invention provides a laser radar system especially a technique scheme of two-dimensional scan laser anticollision radar system, which comprises of laser generator, extender-lens, beam splitting prism, laser receiving device and radar controller. The laser scan device comprises of digital scan subassembly controlled by digital scan controller which are controlled by radar controller and lens. The digital scan subassembly employs DMD chip. The laser receiving device employs TDC-GP2 high-speed laser distance measuring circuit chip. The laser generator employs semiconductor laser. The scheme of present invention has no mechanical structure and mechanical drive, so control of mechanical structure movement is needn't, the control of whole system employs electric signal control and reaches merits of small volume and low cost.
Description
Technical field:
What the present invention relates to is a kind of laser radar system, especially a kind of two-dimensional scanning laser collision avoidance radar system.
Background technology:
In the prior art, technique known is by disclosed No. 200610044077.4 patented claims of State Intellectual Property Office, this patented claim discloses a kind of technical scheme of automobile collision-proof one-dimensional scanning lidar system, the laser scanning device of this scheme is to adopt one-dimensional scanning galvanometer emission one-dimensional scanning laser beam, the one-dimensional scanning galvanometer then is to be fixed on the axle sleeve, axle sleeve is contained in again on the axostylus axostyle, make the one-dimensional scanning galvanometer can be along spindle rotation, the one dimension laser beam that reaches one-dimensional scanning galvanometer emission can parallel motion scan position, that is to say, utilize of the face scanning of the line sweep of one dimension by the rotation realization two dimension of one dimension laser galvanometer.Therefore, the control that physical construction will be arranged in this scheme and physical construction is moved, this becomes complicated with regard to the structure that makes this scheme, has also increased the difficulty of maintenance, has also limited measuring accuracy simultaneously, and this is the existing in prior technology weak point.
Summary of the invention:
Purpose of the present invention is exactly at the existing in prior technology deficiency, and provide a kind of technical scheme of two-dimensional scanning laser collision avoidance radar system, the laser scanning device of this scheme is to adopt digital scanning assembly dmd chip and lens combination to form, utilize the dmd chip emission, lens combination is amplified, constitute a two dimensional laser scanning array, therefore, this scheme does not have physical construction and mechanical drive, also just not to the control of physical construction, make the control of total system all realize the control of electric signal, it is little to reach volume, cost is low, scanning is fast, the characteristics of precision height and dependable performance.
This programme is realized by following technical measures: include laser generator, beam expanding lens, beam splitter, laser scanning device, laser receiver and radar control device, the characteristics of this programme are that described laser scanning device is to be made of digital scanning assembly and lens combination, this digital scanning assembly is by the control of digital scanning controller, and the digital scanning controller is controlled by the radar control device.The concrete characteristics of this programme also have, and described digital scanning assembly is the dmd chip that adopts.Described laser receiver is that the employing model is the high-rate laser range-measuring circuit chip of TDC-GP2.Described laser generator is the semiconductor laser that adopts.
The beneficial effect of this programme can be learnt according to the narration to such scheme, because the laser scanning device in this scheme is to adopt digital scanning assembly dmd chip and lens combination to form, dmd chip can form the two dimensional laser scanning array of one 1024 * 768 dot matrix, utilize lens combination that the two dimensional laser scanning array is amplified again, just constitute the two dimensional laser scanning face of a detection, as seen this scheme does not have physical construction and mechanical drive, therefore, the also control of just physical construction not being moved, make the control of total system all realize the control of electric signal, can reach the little and low characteristics of cost of volume, in addition, the sweep velocity of dmd chip is fast, can reach for 16300 frame/seconds, and scanning accuracy height, because what adopt is chip, thus reliable working performance, and can arbitrarily gated sweep mode, adding laser receiver again is the high-rate laser range-measuring circuit chip that adopts, so measuring accuracy is also high.This shows that the present invention compared with prior art has outstanding substantive distinguishing features and obvious improvement, the beneficial effect of its enforcement also is conspicuous.
Description of drawings:
Fig. 1 is the structural representation of the specific embodiment of the invention.
Among the figure, 1 is the radar control device, and 2 is laser receiver, and 3 is laser generator, and 4 is beam expanding lens, and 5 is beam splitter, and 6 are the digital scanning assembly, and 7 are the digital scanning controller, and 8 is lens combination.
Embodiment:
For clearly demonstrating the technical characterstic of this programme,, and, this programme is set forth in conjunction with its accompanying drawing below by an embodiment.
By accompanying drawing as can be seen, the two-dimensional scanning laser collision avoidance radar system of this programme, the laser generator 3 that is made of semiconductor laser is arranged, laser generator 3 gives off laser beam and passes to laser scanning device through beam expanding lens 4 expansion Shu Houjing beam splitters 5, and described laser scanning device is to be made of digital scanning assembly 6 and lens combination 8 that dmd chip constitutes, this digital scanning assembly 6 produces one 1024 * 768 dot matrix or higher two dimensional laser scanning array by 7 controls of digital scanning controller after receiving laser beam, this two dimensional laser scanning array becomes to survey through lens combination 8 emissions uses two-dimension scanning laser, and can change scanning area by adjusting lens combination 8.The coaxial reflector laser that detection scanning laser runs into barrier is separated by beam splitter 5 with digital scanning assembly 6 through lens combination 8 passes to laser receiver 2, described laser receiver 2 is that the employing model is the high-rate laser range-measuring circuit chip of TDC-GP2, this chip converts the light signal of receiving to electric signal and is defeated by radar control device 1, described radar control device 1 is the command and control center of total system, the signal that laser receiver 2 can be transmitted carries out data processing, and be detected the distance of object by output terminal OUT output, speed and azimuth information, sending simultaneously instruction control digital scanning controller 7 again goes control figure scan components 6 to produce the two dimensional laser scanning array, reaching total system and finish detection operations in an orderly manner, is a kind of more promising automobile or helicopter collision avoidance system.
The present invention is not limited in above-mentioned embodiment, and the variation that those of ordinary skills make in essential scope of the present invention, remodeling, interpolation or replacement also should belong to protection scope of the present invention.
Claims (4)
1. two-dimensional scanning laser collision avoidance radar system, include laser generator [3], beam expanding lens [4], beam splitter [5], laser scanning device, laser receiver [2] and radar control device [1], it is characterized in that: described laser scanning device is to be made of digital scanning assembly [6] and lens combination [8], this digital scanning assembly [6] is by digital scanning controller [7] control, and digital scanning controller [7] is controlled by radar control device [1].
2. system according to claim 1 is characterized in that: described digital scanning assembly [6] is the dmd chip that adopts.
3. system according to claim 1 and 2 is characterized in that: described laser receiver [2] is that the employing model is the high-rate laser range-measuring circuit chip of TDC-GP2.
4. system according to claim 3 is characterized in that: described laser generator [3] is the semiconductor laser that adopts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100147180A CN101241189A (en) | 2008-03-07 | 2008-03-07 | Two-dimensional scanning laser collision avoidance radar system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100147180A CN101241189A (en) | 2008-03-07 | 2008-03-07 | Two-dimensional scanning laser collision avoidance radar system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101241189A true CN101241189A (en) | 2008-08-13 |
Family
ID=39932867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100147180A Pending CN101241189A (en) | 2008-03-07 | 2008-03-07 | Two-dimensional scanning laser collision avoidance radar system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101241189A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338875A (en) * | 2010-07-16 | 2012-02-01 | 李少勤 | Multi-spectral scanning foresight anti-collision laser radar device and application thereof |
| CN102540193A (en) * | 2010-12-24 | 2012-07-04 | 无锡物联网产业研究院 | Laser radar monitoring system |
| CN103868889A (en) * | 2012-12-18 | 2014-06-18 | 中国科学技术大学 | Micro cantilever beam array biochemical sensing device based on micro-mirror scanning and method |
| CN108983197A (en) * | 2018-08-15 | 2018-12-11 | 武汉煜炜光学科技有限公司 | 3-D scanning laser radar based on MEMS micromirror |
-
2008
- 2008-03-07 CN CNA2008100147180A patent/CN101241189A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338875A (en) * | 2010-07-16 | 2012-02-01 | 李少勤 | Multi-spectral scanning foresight anti-collision laser radar device and application thereof |
| CN102338875B (en) * | 2010-07-16 | 2013-12-04 | 李少勤 | Multi-spectral scanning foresight anti-collision laser radar device and application thereof |
| CN102540193A (en) * | 2010-12-24 | 2012-07-04 | 无锡物联网产业研究院 | Laser radar monitoring system |
| CN102540193B (en) * | 2010-12-24 | 2014-04-30 | 无锡物联网产业研究院 | Laser radar monitoring system |
| CN103868889A (en) * | 2012-12-18 | 2014-06-18 | 中国科学技术大学 | Micro cantilever beam array biochemical sensing device based on micro-mirror scanning and method |
| CN108983197A (en) * | 2018-08-15 | 2018-12-11 | 武汉煜炜光学科技有限公司 | 3-D scanning laser radar based on MEMS micromirror |
| CN108983197B (en) * | 2018-08-15 | 2020-01-24 | 深圳煜炜光学科技有限公司 | Three-dimensional scanning laser radar based on MEMS (micro-electromechanical systems) micro-mirror |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7200378B2 (en) | LIDAR receiver with multiple detectors to reduce range ambiguity | |
| US11194048B1 (en) | Lidar system with high-resolution scan pattern | |
| KR102352206B1 (en) | Multiple hypothesized LIDAR device range aliasing resilience | |
| US11415675B2 (en) | Lidar system with adjustable pulse period | |
| CN107219532B (en) | Three-dimensional laser radar and distance measuring method based on MEMS micro scanning mirror | |
| CN204044359U (en) | A kind of two-dimensional scan formula laser ranging system | |
| US11927697B2 (en) | Use of extended detection periods for range aliasing detection and mitigation in a light detection and ranging (LIDAR) system | |
| Druml et al. | 1D MEMS micro-scanning LiDAR | |
| CN205120965U (en) | Laser radar based on MEMS micro mirror | |
| CN109343034A (en) | A kind of laser radar emission system based on MEMS galvanometer | |
| CN105403169A (en) | Laser contour scanning device for data acquisition and data acquisition method | |
| CN109343032A (en) | A kind of laser thunder emission system based on diffraction beam splitting element | |
| CN101241189A (en) | Two-dimensional scanning laser collision avoidance radar system | |
| CN110824458A (en) | Large-range scanning coaxial MEMS laser radar optical system | |
| CN109343033A (en) | A kind of time-multiplexed laser radar emission system based on diffraction beam splitting element | |
| CN204044362U (en) | A kind of laser vehicle pick-up unit received more | |
| US20110043679A1 (en) | Camera device and adjusting method for the same | |
| CN211293238U (en) | Large-range scanning coaxial MEMS laser radar optical system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20080813 |