CN102435994A - Active laser detection apparatus - Google Patents
Active laser detection apparatus Download PDFInfo
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- CN102435994A CN102435994A CN2011103894731A CN201110389473A CN102435994A CN 102435994 A CN102435994 A CN 102435994A CN 2011103894731 A CN2011103894731 A CN 2011103894731A CN 201110389473 A CN201110389473 A CN 201110389473A CN 102435994 A CN102435994 A CN 102435994A
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- apd
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- permutation
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Abstract
The invention discloses an active laser detection apparatus. The apparatus is characterized in that: a pulsed laser emits high frequency pulse laser and a set of parallel lights are output through an optical lens set; the parallel lights are irradiated on a target and reflected light passes through a reception lens and is focused; and then, the light is irradiated on an APD array; a current signal output by the APD array is converted into a voltage signal and is amplified by a signal conversion and amplification module; and the processed signal is input to a time interval measurement module that outputs target distance information to a signal processing computer. According to the invention, the detection apparatus enables scanning-free laser detection to be realized, so that the volume and the power consumption of the apparatus can be substantially reduced and the apparatus structure can be simplified.
Description
Technical field
The present invention relates to a kind of laser active probe method, particularly a kind of laser active probe device based on the linear array APD array.
Background technology
The laser obstacle device of helicopter is normally used at present is the radio The radar exploration technique; But the wave beam broad of radiowave; For thinner barrier such as electric wire; The detectivity of communication line is lower, and the angle of divergence of laser is smaller, so laser obstacle sniffer is the development in future direction.
Present existing Laser Detecting Set is scan-type normally, and promptly laser shines on the detection of a target after scanister scanning, uses an APD probe unit Laser Measurement echoed signal.This sniffer is owing to exist scanning mechanism, and volume is big, and complex structure is safeguarded inconvenient.
Summary of the invention
To above-mentioned technical matters, the purpose of this invention is to provide a kind of laser active probe device.
Technical scheme of the present invention is achieved in that
Pulsed laser emission high-frequency pulse laser is output as one group of directional light through optical lens group; This directional light irradiation target reflection light shines on the APD permutation after receiver lens focuses on; The current signal of APD permutation output is converted into voltage signal and amplification through conversion of signals and amplification module; Input to the time interval measurement module, the range information of time interval measurement module export target is given the signal Processing computing machine.
Described signal Processing computing machine is responsible for signal Processing range-to-go value.
The APD permutation has 16 APD probe units to form according to linear array.
Innovative point of the present invention is mainly reflected in the processing to reflector laser; APD permutation detector by 16 APD probe units according to linear array; When reflector laser shone on the APD probe unit, the APD probe unit can be exported dark current, and conversion of signals and amplification module are converted into voltage signal with current signal; Export in the time interval measurement module, signal processor is being converted into time interval information one group of target range information.
Description of drawings
Accompanying drawing is a structural representation of the present invention;
Below in conjunction with accompanying drawing content of the present invention is done further explain.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is made further detailed description.
As shown in Figure 1, apparatus of the present invention adopt structure as shown in Figure 1, and this structure comprises 1. pulsed lasers; 2. optical lens group, 3. receiver lens, 4.APD permutation; 5. conversion of signals and amplification module, 6. time interval measurement module, 7. signal Processing computing machine; 8. spectroscope, 9. conversion of signals and amplification module.
Embodiment is following: pulsed laser 1 emission high-frequency pulse laser is output as one group of directional light through optical lens group 2; This directional light irradiation target reflection light shines on the .APD permutation 4 after receiver lens 3 focuses on; The current signal of APD permutation 4 outputs is converted into voltage signal and amplification through conversion of signals and amplification module 5; Input to time interval measurement module 6; The range information of time interval measurement module 6 export targets is given signal Processing computing machine 7, and signal Processing computing machine 7 is responsible for the range-to-go value of signal Processing.
Linear array APD detector of the present invention is that the detector of 16 APD probe units according to linear array arranged, and uses this detector can realize non-scanning laser detection, thereby reduces the volume and the power consumption of system, simplied system structure greatly.
Claims (3)
1. laser active probe device; Comprise; 1. pulsed laser (1) is characterized in that, pulsed laser (1) emission high-frequency pulse laser is output as one group of directional light through optical lens group (2); This directional light irradiation target reflection light shines on the APD permutation (4) after receiver lens (3) focuses on; The current signal of APD permutation (4) output is converted into voltage signal and amplification through conversion of signals and amplification module (5), inputs to time interval measurement module (6), and the range information of time interval measurement module (6) export target is given signal Processing computing machine (7).
2. a kind of laser active probe device according to claim 1 is characterized in that, described signal Processing computing machine (7) is responsible for signal Processing range-to-go value.
3. a kind of laser active probe device according to claim 1 is characterized in that APD permutation (4) has 16 APD probe units to form according to linear array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103894731A CN102435994A (en) | 2011-11-30 | 2011-11-30 | Active laser detection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103894731A CN102435994A (en) | 2011-11-30 | 2011-11-30 | Active laser detection apparatus |
Publications (1)
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| CN102435994A true CN102435994A (en) | 2012-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2011103894731A Pending CN102435994A (en) | 2011-11-30 | 2011-11-30 | Active laser detection apparatus |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102946240A (en) * | 2012-11-05 | 2013-02-27 | 西安交通大学 | Time discrimination circuit based on data fitting |
| CN102946242A (en) * | 2012-11-05 | 2013-02-27 | 西安交通大学 | High-precision time discriminator circuit |
| CN102946241A (en) * | 2012-11-05 | 2013-02-27 | 西安交通大学 | Time discriminator circuit based on double-loop data fitting |
| CN103297003A (en) * | 2013-05-08 | 2013-09-11 | 西安交通大学 | Novel moment discrimination circuit |
| CN106291579A (en) * | 2016-08-31 | 2017-01-04 | 湖北久之洋红外系统股份有限公司 | A kind of laser detection system having cooperative target |
| CN112014853A (en) * | 2020-09-04 | 2020-12-01 | 杭州巨星科技股份有限公司 | Special circuit for laser ranging and ranging method based on circuit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776760A (en) * | 2010-02-09 | 2010-07-14 | 中国科学院上海技术物理研究所 | Laser three-dimensional imaging device based on single-photon detector |
-
2011
- 2011-11-30 CN CN2011103894731A patent/CN102435994A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776760A (en) * | 2010-02-09 | 2010-07-14 | 中国科学院上海技术物理研究所 | Laser three-dimensional imaging device based on single-photon detector |
Non-Patent Citations (2)
| Title |
|---|
| 寇松峰等: "基于4元APD阵列的激光测距技术研究", 《激光与红外》, vol. 38, no. 6, 30 June 2008 (2008-06-30), pages 537 - 540 * |
| 陈利: "半导体激光测距回波信号处理技术研究", 《中国优秀硕士学位论文全文数据库 信息科技辑》, no. 4, 15 April 2009 (2009-04-15), pages 7 - 8 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102946240A (en) * | 2012-11-05 | 2013-02-27 | 西安交通大学 | Time discrimination circuit based on data fitting |
| CN102946242A (en) * | 2012-11-05 | 2013-02-27 | 西安交通大学 | High-precision time discriminator circuit |
| CN102946241A (en) * | 2012-11-05 | 2013-02-27 | 西安交通大学 | Time discriminator circuit based on double-loop data fitting |
| CN102946240B (en) * | 2012-11-05 | 2015-08-05 | 西安交通大学 | A kind of moment discrimination circuit based on data fitting |
| CN102946242B (en) * | 2012-11-05 | 2015-10-28 | 西安交通大学 | A kind of High-precision time discriminator circuit |
| CN102946241B (en) * | 2012-11-05 | 2016-01-13 | 西安交通大学 | A kind of moment discrimination circuit based on two-way data fitting |
| CN103297003A (en) * | 2013-05-08 | 2013-09-11 | 西安交通大学 | Novel moment discrimination circuit |
| CN103297003B (en) * | 2013-05-08 | 2015-08-05 | 西安交通大学 | A kind of Novel moment discrimination circuit |
| CN106291579A (en) * | 2016-08-31 | 2017-01-04 | 湖北久之洋红外系统股份有限公司 | A kind of laser detection system having cooperative target |
| CN112014853A (en) * | 2020-09-04 | 2020-12-01 | 杭州巨星科技股份有限公司 | Special circuit for laser ranging and ranging method based on circuit |
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Application publication date: 20120502 |