CN202350798U - Standard distance simulator - Google Patents
Standard distance simulator Download PDFInfo
- Publication number
- CN202350798U CN202350798U CN2011205089507U CN201120508950U CN202350798U CN 202350798 U CN202350798 U CN 202350798U CN 2011205089507 U CN2011205089507 U CN 2011205089507U CN 201120508950 U CN201120508950 U CN 201120508950U CN 202350798 U CN202350798 U CN 202350798U
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- laser
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- electric signal
- time delay
- control circuit
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Abstract
The utility model discloses a standard distance simulator which comprises a photoelectric conversion probe, a laser emitter, a precise time delay control circuit and a computer control system, wherein the photoelectric conversion probe receives a laser signal sent by a pulse laser distance measurer, converts the laser signal into an electric signal and outputs the electric signal to the precise time delay control circuit; the precise time delay control circuit transmits the electric signal after delay time set by the computer control system to the laser emitter; and the laser emitter converts the received electric signal into the laser signal and sends the laser signal out. According to a photoelectric time delay theory, the electric signal replaces the laser and is transmitted; the transmission time delay of the laser in the atmosphere is simulated by controlling the delay time of the electric signal, so that the influence of environment and weather conditions is avoided, and different space distances can be simulated; and the standard distance simulator has the advantages of high efficiency and low cost.
Description
Technical field
The utility model relates to calibrating installation, is specifically related to the gauged distance simulator, is used for the test and the calibration of pulse laser laser welder distance accuracy.
Background technology
The pulse type laser stadimeter be a kind of through Laser Measurement from being transmitted into the instrument of the time computed range between returning, this instrument need be calibrated distance accuracy in use.At present, the outer place that has that the test of pulse laser laser welder distance accuracy and calibration are generally adopted is tested and two kinds of methods of Optical Fiber Transmission.Wherein, Outer place method of testing is in outdoor target range, and the distance of stipulating in the maximum ranging of measured laser stadimeter is last, vertically places a target; The size of target plate and diffuse reflectance are stipulated by the product closed specification; Find range with the repetition frequency of regulation continuously in stadimeter aiming target plate center, judge the distance accuracy of stadimeter through the distance of contrast space length and stadia surveying.Optical fiber transmission method is the method that present indoor measurement is adopted; Concrete grammar is: the optical fiber that adopts one section regular length; The nominal light path of optical fiber is in the ranging of stadimeter; With being coupled in the optical fiber after the measured laser stadimeter emitted laser decay focusing, as transmission medium, coupling attenuation turns back to the receiving end of laser range finder after Optical Fiber Transmission with optical fiber; Repetition frequency with regulation is found range continuously, and the distance of light path and stadia surveying through contrast optical fiber is judged the distance accuracy of stadimeter.
But above-mentioned two kinds of methods all come with some shortcomings.Outer place method of testing receives the influence of weather condition bigger; When abominable or visibility is low when weather, can't test, perhaps measurement result is inaccurate; And the distance between target and the measured laser stadimeter generally can reach tens kilometers; Receive the restriction of site condition, efficiency of measurement is low, and time cost is high.
Optical fiber transmission method since the optical fiber that adopts regular length as transmission medium; Can only measure the distance accuracy of a certain fixed range point; When distance changes, need change optical fiber, cause efficiency of measurement low, and along with the increase of fiber lengths; The weight and volume of optical fiber increases, and causes and measures the cost increase.
The utility model content
The utility model technical matters to be solved is that the existing pulse type laser stadimeter distance accuracy calibration steps efficient of solution is low, cost is high, is subject to the problem that various extraneous factors influence.
In order to solve the problems of the technologies described above; The technical scheme that the utility model adopted provides a kind of gauged distance simulator; Comprise opto-electronic conversion probe, generating laser, precision time delay control circuit and computer control system; The laser signal that said opto-electronic conversion probe received pulse laser range finder sends also converts electric signal into and exports to said precision time delay control circuit; Said precision time delay control circuit is set delay time according to said computer control system and is sent said electric signal time-delay to said generating laser, and said generating laser is that laser signal sends with the electrical signal conversion of receiving.
In such scheme; Said computer control system is provided with the distance setting interface; Said distance setting interface is used to receive the simulated range that the user sets, and said computer control system calculates said delay time according to the simulated range of the transmission speed of laser in atmosphere and user's setting.
The utility model adopts photoelectricity time-delay principle, and the laser that the opto-electronic conversion probe is received is through after the opto-electronic conversion; Replace laser to transmit with electric signal, through the time-delay of control electric signal, the transmission delay of simulated laser in atmosphere; Electric signal, returns with the laser form by generating laser emission laser through electric light conversion back again at the terminal, therefore can not receive the influence of environmental weather conditions; And can simulate the target of different spaces distance, efficient is high, cost is low.
Description of drawings
Fig. 1 is the principle of work synoptic diagram of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is made detailed explanation.
Fig. 1 is the principle of work synoptic diagram of the utility model, and is as shown in Figure 1, and the gauged distance simulator that the utility model provides comprises opto-electronic conversion probe 1, generating laser 3, precision time delay control circuit 2 and computer control system 4.
Precision time delay control circuit 2 is connected with computer control system 4 through serial interface cable 5; Computer control system 4 is provided with the distance setting interface; Be used for the fiber lengths distance that to simulate through the distance setting interface setting; Computer control system 4 calculates required delay time according to the simulated range that transmission speed and the user of laser in atmosphere sets, and through setting different distances, can simulate the optical fiber of different length.
The core of opto-electronic conversion probe 1 is a high-speed photodetector, is used for converting high-speed optical pulse into electric impulse signal, and the core of generating laser 3 is laser diodes, is used for converting electric impulse signal into laser pulse.Precision time delay control circuit 2 mainly is made up of high speed signal treatment circuit, delay control circuit and precision time delay circuit, is used to accomplish the time-delay and the control function of electric impulse signal.When testing and calibrating; The opto-electronic conversion of gauged distance simulator probe 1 is aimed at the emission port 7 of pulse laser laser welder 6; The generating laser 3 of gauged distance simulator is aimed at the receiving port 8 of pulse laser laser welder 6; The opto-electronic conversion laser signal that 1 received pulse laser range finder 6 sends from emission port 7 of popping one's head in; And convert this laser signal into electric signal and export to precision time delay control circuit 2; Precision time delay control circuit 2 is set delay time according to computer control system 4 and is sent said electric signal time-delay to generating laser 3, and generating laser 3 is that laser signal sends with the electrical signal conversion of receiving again, by receiving port 8 receptions of pulse laser laser welder 6.
The utility model; Adopt electric signal to replace light signal to transmit, solved light signal and in transmission course, received external condition to influence bigger problem, and the electric signal transmission is more prone to control than optical signal transmission; Can accurately simulate different space lengths; And space length can be regulated through computer control system continuously, thereby has realized the test and the calibration of paired pulses laser range finder distance accuracy parameter, and whole test process does not receive the restriction of extraneous factor; Can under limited environmental baseline, accomplish, efficiency of measurement height, result are accurately and reliably.
The utility model is not limited to above-mentioned preferred forms, and anyone should learn the structural change of under the enlightenment of the utility model, making, every with the utlity model has identical or close technical scheme, all fall within the protection domain of the utility model.
Claims (2)
1. gauged distance simulator; It is characterized in that; Comprise opto-electronic conversion probe, generating laser, precision time delay control circuit and computer control system; The laser signal that said opto-electronic conversion probe received pulse laser range finder sends also converts electric signal into and exports to said precision time delay control circuit; Said precision time delay control circuit is set delay time according to said computer control system and is sent said electric signal time-delay to said generating laser, and said generating laser is that laser signal sends with the electrical signal conversion of receiving.
2. gauged distance simulator as claimed in claim 1; It is characterized in that; Said computer control system is provided with the distance setting interface; Said distance setting interface is used to receive the simulated range that the user sets, and said computer control system calculates said delay time according to the simulated range of the transmission speed of laser in atmosphere and user's setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205089507U CN202350798U (en) | 2011-12-08 | 2011-12-08 | Standard distance simulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205089507U CN202350798U (en) | 2011-12-08 | 2011-12-08 | Standard distance simulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202350798U true CN202350798U (en) | 2012-07-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205089507U Expired - Fee Related CN202350798U (en) | 2011-12-08 | 2011-12-08 | Standard distance simulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202350798U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109031250A (en) * | 2018-06-12 | 2018-12-18 | 南京理工大学 | It is a kind of to emit quantitative detection system in servo-actuated laser radar performance room |
| CN110873864A (en) * | 2018-08-31 | 2020-03-10 | 南京理工大学 | Linear array laser radar range profile simulation device and method |
-
2011
- 2011-12-08 CN CN2011205089507U patent/CN202350798U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109031250A (en) * | 2018-06-12 | 2018-12-18 | 南京理工大学 | It is a kind of to emit quantitative detection system in servo-actuated laser radar performance room |
| CN109031250B (en) * | 2018-06-12 | 2021-09-10 | 南京理工大学 | Indoor quantitative detection system for performance of laser radar capable of emitting follow-up laser |
| CN110873864A (en) * | 2018-08-31 | 2020-03-10 | 南京理工大学 | Linear array laser radar range profile simulation device and method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20161208 |