CN205139368U - Novel phase type laser distance -measurement appearance - Google Patents
Novel phase type laser distance -measurement appearance Download PDFInfo
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- CN205139368U CN205139368U CN201520790159.8U CN201520790159U CN205139368U CN 205139368 U CN205139368 U CN 205139368U CN 201520790159 U CN201520790159 U CN 201520790159U CN 205139368 U CN205139368 U CN 205139368U
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Abstract
The utility model discloses a novel phase type laser distance -measurement appearance, including laser emission device, laser receiving device, signal unit, beam splitting device and central processing unit, beam splitting device divide into the calibration with the laser beam of launching and uses laser with laser with measuring, last first automatically controlled photoswitch and the automatically controlled photoswitch of second of being provided with of beam splitting device, and the calibration jets out through first automatically controlled photoswitch with laser, and the measurement jets out through the automatically controlled photoswitch of second with laser, central processing unit connects first automatically controlled photoswitch, the automatically controlled photoswitch of second respectively and controls two automatically controlled photoswitch timesharing and open. The utility model discloses a novel phase type laser distance -measurement appearance utilizes automatically controlled photoswitch to carry out application with laser and measurement with laser to the calibration, realizes keeping apart two bundles of laser and the quick switching to guarantee splendid system temperature characteristic and operation stability, just the utility model discloses a distancer simple structure, convenient, the low in production cost of maintenance have high price / performance ratio.
Description
Technical field
The utility model relates to laser ranging field, is specifically related to a kind of novel phase type laser range finder.
Background technology
Present laser ranging has been widely used in life and engineering, and the phase alignment adopted in existing phase laser distance measurement product has following several: one is adopt the calibration of circuit frequency mixer; Two is adopt mechanical turnover device to carry out switching calibration to light path; Three is be provided with independent optical paths for calibration.But, there is shortcoming separately in above-mentioned phase alignment: when adopting the calibration of circuit frequency mixer, cannot accurate alignment because the avalanche diode gain error that causes of variation of ambient temperature; And when adopting mechanical turnover device to carry out switching calibration to light path, mechanical overturn precision and underspeed, physical construction is fragile simultaneously, and serviceable life is short; Independent optical paths is set and then can carries out accurate calibration for calibration, but its device needs strict coupling, with high costs.
Utility model content
In order to solve existing phase laser distance measurement product Problems existing, the purpose of this utility model is to provide a kind of novel phase type laser range finder.
The technical scheme that the utility model adopts is:
A kind of novel phase type laser range finder, comprising:
Laser beam emitting device, for Emission Lasers;
Laser receiver, for receiving calibration laser and measurement laser, and is sent to signal element the signal extracted;
Signal element, for providing the drive singal of Laser emission, receives the signal that laser receiver provides simultaneously;
Light-dividing device, laser beam for being launched by laser beam emitting device is divided into calibration laser and measurement laser, described light-dividing device is provided with the first electric control optical switch and the second electric control optical switch, calibration is with laser by directive laser receiver direct after the first electric control optical switch, and measurement is reflected to laser receiver through target after passing through the second electric control optical switch with laser;
Central processing unit, described central processing unit connects the first electric control optical switch, the second electric control optical switch and signal element respectively, and central processing unit is used for analyzing the signal of signal element, controls two electric control optical switch timesharing simultaneously and opens.
As the further improvement of technique scheme, described first electric control optical switch and the second electric control optical switch are liquid crystal board.
As the further improvement of technique scheme, described first electric control optical switch and the second electric control optical switch are the high permeability liquid crystal board of TN type high speed.
As the further improvement of technique scheme, described laser receiver is avalanche diode.
As the further improvement of technique scheme, be provided with signal amplifier in described signal element, the signal that described laser receiver provides enters in signal element after signal amplifier.
The beneficial effects of the utility model are:
Contrast prior art, novel phase type laser range finder of the present utility model utilizes electric control optical switch to carry out Time-sharing control to calibration laser and measurement laser, reaches the effect by two bundle laser isolation and rapid translating, thus has the following advantages:
1, calibration laser and measurement laser share laser beam emitting device and laser receiver, thus ensure splendid system temperature characteristic;
2, the photoswitch of light-dividing device adopts automatically controlled mode to control, and without any mechanical movement means, precision is accurate, and long service life, has fabulous degree of stability when ensureing that this stadimeter runs simultaneously;
3, stadimeter structure of the present utility model is simple, easy to maintenance, production cost is low, has high cost performance, is convenient to promote.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the schematic diagram of novel phase type laser range finder of the present utility model when measuring;
Fig. 2 is the structural representation of light-dividing device.
Embodiment
With reference to Fig. 1, Fig. 2, the preferred embodiment that the utility model provides, a kind of novel phase type laser range finder, comprises laser beam emitting device 1, laser receiver 2, signal element 3, light-dividing device 4 and central processing unit 5.
Described signal element 3 connects laser beam emitting device 1, and signal element 3 provides drive singal, driving laser emitter 1 Emission Lasers bundle.
Be provided with spectroscope in described light-dividing device 4, the laser beam that laser beam emitting device 1 is launched is divided into calibration laser and measurement laser by spectroscope.Light-dividing device 4 is also provided with the first electric control optical switch 41 and the second electric control optical switch 42, calibration is with laser by directive laser receiver 2 direct after the first electric control optical switch 41, and measurement laser is by reflecting to laser receiver 2 through target 6 after the second electric control optical switch 42.Preferably, described first electric control optical switch 41 and the second electric control optical switch 42 are the high permeability liquid crystal board of TN type high speed.
Described laser receiver 2 receives calibration laser and measurement laser, and in the present embodiment, described laser receiver 2 is avalanche diode.Laser receiver 2 connection signal unit 3, the phase signal extracted from calibration laser and measurement laser is sent to signal element 3 by laser receiver 2.
Signal amplifier is provided with, for the phase signal that amplifying laser receiving trap 2 inputs in described signal element 3.
Described central processing unit 5 connects the first electric control optical switch 41, second electric control optical switch 42 and signal element 3 respectively.Central processing unit 5 is opened for controlling two electric control optical switch timesharing, realizes, by two isolation of bundle laser and rapid translating, being convenient to collect calibrating signal and measuring-signal; Central processing unit 5 also can be analyzed, for calibrating system initial phase the phase signal that signal element 3 receives.
Utilize novel phase type laser range finder of the present utility model to carry out phase alignment, comprise the following steps: S1, laser beam emitting device 1 Emission Lasers bundle are in light-dividing device 4; The laser beam that laser beam emitting device 1 is launched is divided into a drive test amount laser by S2, light-dividing device 4, a road calibration laser; S3, central processing unit 5 send steering order, and make the first electric control optical switch 41 conducting, the second electric control optical switch 42 ends, and calibration laser enters laser receiver 2 by light-dividing device 4 and processes; S4, central processing unit 5 send steering order, and the first electric control optical switch 41 is ended, the second electric control optical switch 42 conducting, and measurement by after light-dividing device 4 with laser, enters laser receiver 2 by target 6 reflection and processes; S5, laser receiver 2 extract the signal of two bundle laser and are sent to signal element 3, the phase information of being carried by central processing unit 5 analyzing and processing calibration laser and measurement laser; The phase information that S6, central processing unit 5 obtain according to above-mentioned steps 5 analysis, by the drive singal of control signal unit 3, calibrates system initial phase.
Contrast prior art, novel phase type laser range finder of the present utility model utilizes electric control optical switch to carry out Time-sharing control to calibration laser and measurement laser, reaches the effect by two bundle laser isolation and rapid translating, thus has the following advantages:
1) calibration laser and measurement laser share laser beam emitting device 1 and laser receiver 2, thus ensure splendid system temperature characteristic;
2) photoswitch of light-dividing device 4 adopts automatically controlled mode to control, and without any mechanical movement means, precision is accurate, and long service life, has fabulous degree of stability when ensureing that this stadimeter runs simultaneously;
3) stadimeter structure of the present utility model is simple, easy to maintenance, production cost is low, has high cost performance, is convenient to promote.
Above concrete structure and dimensional data illustrate preferred embodiment of the present utility model, but the utility model is created and is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite without prejudice to the utility model spirit, and these equivalent distortion or replacement are all included in the application's claim limited range.
Claims (5)
1. a novel phase type laser range finder, is characterized in that, comprising:
Laser beam emitting device, for Emission Lasers;
Laser receiver, for receiving calibration laser and measurement laser, and is sent to signal element the signal extracted;
Signal element, for providing the drive singal of Laser emission, receives the signal that laser receiver provides simultaneously;
Light-dividing device, laser beam for being launched by laser beam emitting device is divided into calibration laser and measurement laser, described light-dividing device is provided with the first electric control optical switch and the second electric control optical switch, calibration is with laser by directive laser receiver direct after the first electric control optical switch, and measurement is reflected to laser receiver through target after passing through the second electric control optical switch with laser;
Central processing unit, described central processing unit connects the first electric control optical switch, the second electric control optical switch and signal element respectively, and central processing unit is used for analyzing the signal of signal element, controls two electric control optical switch timesharing simultaneously and opens.
2. the novel phase type laser range finder of one according to claim 1, is characterized in that: described first electric control optical switch and the second electric control optical switch are liquid crystal board.
3. the novel phase type laser range finder of one according to claim 2, is characterized in that: described first electric control optical switch and the second electric control optical switch are the high permeability liquid crystal board of TN type high speed.
4. the novel phase type laser range finder of one according to claim 1, is characterized in that: described laser receiver is avalanche diode.
5. the novel phase type laser range finder of one according to claim 1, it is characterized in that: be provided with signal amplifier in described signal element, the signal that described laser receiver provides enters in signal element after signal amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520790159.8U CN205139368U (en) | 2015-10-13 | 2015-10-13 | Novel phase type laser distance -measurement appearance |
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| CN201520790159.8U CN205139368U (en) | 2015-10-13 | 2015-10-13 | Novel phase type laser distance -measurement appearance |
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| CN205139368U true CN205139368U (en) | 2016-04-06 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301597A (en) * | 2015-10-13 | 2016-02-03 | 深圳市迈测科技股份有限公司 | Novel phase type laser range finder and phase calibration method thereof |
| CN106019301A (en) * | 2016-05-23 | 2016-10-12 | 广东工业大学 | Laser range finding system of electronic switch switching type singe optical path free of spectroscope |
| CN106248175A (en) * | 2016-10-09 | 2016-12-21 | 深圳市迈测科技股份有限公司 | Laser fiber fluid level measuring instrument and measuring method |
| CN115079133A (en) * | 2022-06-14 | 2022-09-20 | 韩晓霞 | Calibration range finder based on laser ranging technology and operation method thereof |
-
2015
- 2015-10-13 CN CN201520790159.8U patent/CN205139368U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301597A (en) * | 2015-10-13 | 2016-02-03 | 深圳市迈测科技股份有限公司 | Novel phase type laser range finder and phase calibration method thereof |
| CN106019301A (en) * | 2016-05-23 | 2016-10-12 | 广东工业大学 | Laser range finding system of electronic switch switching type singe optical path free of spectroscope |
| CN106019301B (en) * | 2016-05-23 | 2017-12-12 | 广东工业大学 | Exempt from spectroscopical LDMS in a kind of electronic switch suitching type monochromatic light road |
| CN106248175A (en) * | 2016-10-09 | 2016-12-21 | 深圳市迈测科技股份有限公司 | Laser fiber fluid level measuring instrument and measuring method |
| WO2018064846A1 (en) * | 2016-10-09 | 2018-04-12 | 深圳市迈测科技股份有限公司 | Laser fiber liquid level measuring instrument and measurement method |
| CN115079133A (en) * | 2022-06-14 | 2022-09-20 | 韩晓霞 | Calibration range finder based on laser ranging technology and operation method thereof |
| CN115079133B (en) * | 2022-06-14 | 2023-05-12 | 山东沂蒙地理信息有限公司 | Calibration range finder based on laser ranging technology and operation method thereof |
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