CN201464647U - Laser radar gate control circuit - Google Patents
Laser radar gate control circuit Download PDFInfo
- Publication number
- CN201464647U CN201464647U CN2009201254796U CN200920125479U CN201464647U CN 201464647 U CN201464647 U CN 201464647U CN 2009201254796 U CN2009201254796 U CN 2009201254796U CN 200920125479 U CN200920125479 U CN 200920125479U CN 201464647 U CN201464647 U CN 201464647U
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- China
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- laser radar
- array chip
- gate array
- radar
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- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
Abstract
A laser radar gate control circuit comprises an on-site programmable logic gate array chip, a power supply module, a JTAG port and an output control serial port. The on-site programmable logic gate array chip has the input end thereof connected with the laser of radar and the output end thereof connected with the detector of the radar, the power supply module, the JTAG port and the output control serial port are connected with the corresponding interfaces of the on-site programmable logic gate array chip respectively, and when setting an output waveform, the JTAG port and the other end of the output control serial port are connected with a computer. The laser radar gate control circuit adopts on-site programmable logic gate array chip control and computer read-in data so as to remarkably expand the functions thereof; can set the output waveforms to control the multi-path output; and can drive different drivers so as to be convenient. Each path of output has two options: 5V TTL signal and oc gate output. The laser radar gate control circuit is especially suitable for sequential switch on wind shear laser radar.
Description
Technical field
The utility model relates to a kind of gating circuit that is applied on the wind shear laser radar, can control multichannel output simultaneously, is a kind of easy to use and gating circuit flexibly, and is special in the sequence switch on the laser radar.
Background technology
The wind shear laser radar is based on the Doppler shift principle of light signal, as transmitting illuminant, receives the backward scattered Doppler shift light signal of atmospheric particles with laser, measures the radially wind field of atmosphere by the optical frequency detecting element.Gating circuit is used to trigger the detector of laser radar, promptly opens detector light signal is converted into electric signal, also can be simultaneously as the switch of photon counting card etc., be the sequential circuit that is specifically designed on the wind shear laser radar.
The gating circuit of laser radar has multiple at present, one of them by the monostable integrated chip, can ternary output driver and high speed triode form, the time of collection reference light and detector shut-in time are by electric capacity and the resistance adjustment external with the monostable chip, use more loaded down with trivial details and can not flexible Application, accuracy also be very high.
The utility model content
The purpose of this utility model is in order to overcome the defective that above-mentioned technology exists, to provide a kind of volume little, select for use device few, and the simple laser radar gating circuit of topology layout is to be suitable for the detector on the different laser radars.
For achieving the above object, the utility model adopts following technical proposals:
Described laser radar gating circuit is by field programmable gate array chip (FPGA), power module, the JTAG mouth, output control serial ports is formed, described field programmable gate array chip input end is connected with the laser instrument of radar, output terminal is connected with the detector of radar, power module, program is downloaded serial ports, output control serial ports is connected with field programmable gate array chip corresponding interface respectively, after programmable gate array chip (FPGA) program is finished, download in the chip by the JTAG mouth, when setting output waveform the program output control serial ports other end is connected with computer.The waveform of each output is set on computers, and the program that output is set is write with VC.
The beneficial effects of the utility model are: can accurately realize sequential control, reliability is high, and can arbitrarily change each road output at any time, and versatility is good, uses very flexible.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a laser radar gating circuit schematic diagram described in the utility model.
1-input end among the figure, 2-output terminal, 3-field programmable gate array chip FPGA, 4-output control serial ports, 5-JTAG mouth, 6-power module.
Embodiment
Below in conjunction with specific embodiment the utility model is elaborated:
Described laser radar gating circuit is by field programmable gate array chip (FPGA) 3, power module 6, JTAG mouth 5 (FPGA program download interface, JTAG is the english abbreviation of " joint test behavior tissue ", be a kind of international standard), output control serial ports 4 is formed, described field programmable gate array chip 3 input ends 1 are connected with the laser instrument of radar, output terminal 2 is connected with the detector of radar, power module 6, JTAG mouth 5, output control serial ports 4 is connected with field programmable gate array chip corresponding interface respectively, after programmable gate array chip (FPGA) program is finished, download in the chip by the JTAG mouth, the serial ports other end is connected with computer, the waveform of each output is set on computers, the program that output is set is write with VC. when each passage output waveform is set, can import the passage that needs setting on " Channel " hurdle, import waveform then in the edit box of back, point " Set " button is promptly finished setting.
Described power module has the two-way output circuit, and out-put supply is respectively 1.5 volts and 3.3 volts, also more outputs can be set, and offers each chip.
Chip output has 5 volts of TTL signals and the output of oc door, can drive different detectors.
The utility model course of work is: when the radar laser instrument starts the exomonental while, export the TTL signal to FPGA, FPGA starts working after receiving signal, export according to the control that is provided with in advance, thus the detector on the triggering laser radar.
The utility model is controlled with field programmable gate array chip (FPGA), and computer writes data, and its function is expanded greatly, can control multichannel output simultaneously, and visible system requirement change output, and is very easy to use.Output terminal has TTL signal and the output of oc door, is applicable to different radar detedtors.
Claims (2)
1. laser radar gating circuit, it is characterized in that: described gating circuit is by field programmable gate array chip (3), power module (6), JTAG mouth (5), output control serial ports (4) is formed, described field programmable gate array chip (3) input end (1) is connected with the laser instrument of radar, output terminal (2) is connected with the detector of radar, power module (6), JTAG mouth (5), output control serial ports (4) is connected with field programmable gate array chip corresponding interface respectively, when setting output waveform serial ports (4) is controlled in program output, JTAG mouth (5) other end is connected with computer.
2. laser radar gating circuit according to claim 1, it is characterized in that: described power module (6) is provided with two-way or multiplex output circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201254796U CN201464647U (en) | 2009-06-23 | 2009-06-23 | Laser radar gate control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201254796U CN201464647U (en) | 2009-06-23 | 2009-06-23 | Laser radar gate control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201464647U true CN201464647U (en) | 2010-05-12 |
Family
ID=42391996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201254796U Expired - Fee Related CN201464647U (en) | 2009-06-23 | 2009-06-23 | Laser radar gate control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201464647U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104950299A (en) * | 2015-07-15 | 2015-09-30 | 南京信息工程大学 | Laser radar gating signal generation device |
| CN106527262A (en) * | 2016-11-04 | 2017-03-22 | 合肥天讯亿达光电技术有限公司 | Single wavelength laser radar monitoring system |
-
2009
- 2009-06-23 CN CN2009201254796U patent/CN201464647U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104950299A (en) * | 2015-07-15 | 2015-09-30 | 南京信息工程大学 | Laser radar gating signal generation device |
| CN106527262A (en) * | 2016-11-04 | 2017-03-22 | 合肥天讯亿达光电技术有限公司 | Single wavelength laser radar monitoring system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20140623 |
|
| EXPY | Termination of patent right or utility model |