CN202599966U - Remote laser measurement device of rotating speed of rotary objects - Google Patents
Remote laser measurement device of rotating speed of rotary objects Download PDFInfo
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- CN202599966U CN202599966U CN2012202024064U CN201220202406U CN202599966U CN 202599966 U CN202599966 U CN 202599966U CN 2012202024064 U CN2012202024064 U CN 2012202024064U CN 201220202406 U CN201220202406 U CN 201220202406U CN 202599966 U CN202599966 U CN 202599966U
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Abstract
The utility model provides a remote laser measurement device of rotating speed of rotary objects. The remote laser measurement device can measure the rotating speed of the rotary objects remotely in non-contact mode, and therefore measurement devices and operating personnel can keep far away from measured objects to be safe and reliable, and measurement results are accurate and visualized. The remote laser measurement device has the advantages of being small in size, convenient to carry, simple to operate and the like. The remote laser measurement device comprises a remote laser rotating speed sensor fixed on a support, a counting device connected with the remote laser rotating speed sensor, and a reflective film attached on the rotary objects. The remote laser rotating speed sensor comprises a laser generator and a twin lens assembly composed of a laser light-emitting lens and a scattered-light focusing lens, wherein the laser generator sends laser beams through the laser light-emitting lens and recovers lasers reflected on the reflective film through the scattered-light focusing lens, then generates pulse signals of the rotating speed. The counting device obtains the rotating speed of the rotary objects by receiving the pulse signals of the rotating speed output by the remote laser rotating speed sensor.
Description
Technical field
The utility model relates to the mechanics field of measuring techniques, particularly relates to a kind of rotating object rotating speed long distance laser measurement mechanism.
Background technology
The tachometric survey of rotating object occupies critical role in the mechanics metering.At present, be mostly tachometer of measuring or tachometer gage and so at the measurement mechanism that uses aspect the measurement of rotating object rotating speed both at home and abroad.The maximum limitation of these measurement mechanisms is exactly that operating distance is near excessively, and when measuring the rotating speed of ultra-large type hydro-extractor or ultrahigh rotating speed hydro-extractor, near excessively operating distance may produce safety problem.
The utility model content
The defective that the utility model exists according to prior art; A kind of rotating object rotating speed long distance laser measurement mechanism is provided; Can measure the rotating speed of rotating object through remote contactless mode; Make surveying instrument and operating personnel away from testee, safe and reliable, measurement result is also more accurately with directly perceived.Also possess volume little, be easy to carry, simple operation and other advantages.
The technical scheme of the utility model is:
A kind of rotating object rotating speed long distance laser measurement mechanism is characterized in that, comprises long distance laser speed probe that is fixed on the support and the counting equipment that links to each other with the long distance laser speed probe and is attached to the reflective membrane on the rotating object; Said long distance laser speed probe comprises laser generator and the twin-lens assembly of being made up of lasing fluorescence camera lens and scattered light amasthenic lens; Said laser generator through the twin-lens assembly lasing fluorescence camera lens emission of lasering beam and reclaim laser light reflected from the reflective membrane that is attached to rotating object through the scattered light amasthenic lens; Produce rotational speed pulse signal and export to said counting equipment, said counting equipment obtains the rotating speed of rotating object through the rotational speed pulse signal that receives the output of long distance laser speed probe.
Said long distance laser speed probe also comprises photoelectricity reception and switching device, photosignal amplification and shaping circuit and the Transistor-Transistor Logic level signal output apparatus that connects in order; Said photoelectricity receives and switching device receives the reflector laser that is reclaimed by the scattered light amasthenic lens and converts thereof into pulse electrical signal; Amplify and shaping circuit will be amplified by the pulse electrical signal of photoelectric commutator conversion and is shaped as the Transistor-Transistor Logic level signal through photosignal, the Transistor-Transistor Logic level signal is exported to said counting equipment by the Transistor-Transistor Logic level signal output apparatus.
Scattered light amasthenic lens in the said twin-lens assembly is convex lens, and the center position of said convex lens has the light source position hole, has semiconductor laser and amasthenic lens on the central axis of convex lens, and laser beam can not be dispersed apart from inner focusing long; The place, focal position of convex lens has photoelectricity and receives and switching device; Said laser generator, reclaims and focuses on photoelectricity reception and the switching device through the scattered light amasthenic lens through the reflective membrane laser light reflected through lasing fluorescence camera lens emission laser from the light source position hole.
Said laser generator is the semiconductor laser of being made up of laser diode.
The measuring distance of said long distance laser speed probe reaches more than 10 meters.
The tachometric survey scope of said long distance laser speed probe is 20r/min～100000r/min.
The technique effect of the utility model:
A kind of rotating object rotating speed long distance laser measurement mechanism that the utility model provides; Can directly measure the rotating speed of rotating object through remote contactless mode; Particularly when measuring the rotating speed of ultra-large type hydro-extractor or ultrahigh rotating speed hydro-extractor; Make that surveying instrument and operating personnel can be away from testees, safe and reliable, measurement result is also more accurately with directly perceived.Also possess volume little, be easy to carry, simple operation and other advantages.
The core of the measurement mechanism of the utility model is the long distance laser speed probe; Utilize long distance laser speed probe emission of lasering beam to shine on the rotating object that posts reflective membrane; When laser beam irradiation arrives reflective membrane; Laser beam is returned the long distance laser speed probe through the reflective membrane reflection; Photoelectric receiving device in the long distance laser speed probe can receive from the reflective membrane laser light reflected and be converted into electric signal exports to the counting equipment that is attached thereto, when laser beam irradiation when rotating object does not paste the part of reflective membrane, the photoelectric receiving device in the long distance laser speed probe does not receive laser signal and does not have electric signal output; What counting equipment received like this is the rotational speed pulse signal of rotating object, this pulse signal analytical calculation can be obtained the rotating speed of rotating object.Have emission laser and the twin-lens assembly that reclaims emission laser in the long distance laser speed probe wherein of the present invention; At present; Though what the tachometer of measuring that uses both at home and abroad had also is to utilize the laser-bounce principle; But this quasi-instrument is to utilize same camera lens to carry out Laser emission and scattered light recovery, in order to take into account emission light and catoptrical focusing, has just caused such apparatus measures apart from short disadvantage.And the creationary scattered light amasthenic lens that increased of long distance laser speed probe of the present invention; Through lasing fluorescence camera lens emission laser; Utilize the scattered light amasthenic lens to reclaim through the reflective membrane laser light reflected, the use of twin-lens is that rotation-speed measuring device measuring distance of the present invention can reach the key guarantee more than 10 meters.The present invention adopts semiconductor laser as laser generator in addition, and advantages of small volume, luminous point are concentrated, feed circuit are simple, therefore measurement mechanism volume of the present invention little, be easy to carry, size sensor has only Φ 4.5cm * 12cm.
Description of drawings
Fig. 1 is that the rotating object rotating speed long distance laser measurement mechanism of the utility model is formed synoptic diagram.
Fig. 2 is that the long distance laser speed probe in the utility model measurement mechanism is formed synoptic diagram.
Fig. 3 is the principle schematic of the twin-lens assembly in the long distance laser speed probe of the utility model.
Reference numeral is listed as follows: the 1-laser generator, and 2-lasing fluorescence camera lens, 3-scattered light amasthenic lens, 4-photoelectricity receives and switching device, and the 5-photosignal amplifies and shaping circuit, 6-TTL level signal output circuit, 7-light source position hole, 8-reflective membrane.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is done further explain.
As shown in Figure 1, be that the rotating object rotating speed long distance laser measurement mechanism of the utility model is formed synoptic diagram.Comprise long distance laser speed probe that is fixed on the support and the counting equipment that links to each other with the long distance laser speed probe and be attached to the reflective membrane on the rotating object.The general design idea of this covering device is; Utilize long distance laser speed probe emission of lasering beam to shine on the rotating object that posts reflective membrane; When the reflective membrane of laser beam irradiation on being attached to rotating object, laser beam is returned the long distance laser speed probe through the reflective membrane reflection, and the long distance laser speed probe receives from the reflective membrane laser light reflected and is converted into electric signal and then this electric signal is exported to counting equipment; When laser beam irradiation when rotating object does not paste the part of reflective membrane; The long distance laser speed probe does not receive laser signal, thereby does not have electric signal output, and the output of long distance laser speed probe is rotational speed pulse signal like this; On counting equipment, just can receive the rotational speed pulse signal of this rotating object, this pulse signal analytical calculation can be obtained the rotating speed of rotating object.
As shown in Figure 2, be that the long distance laser speed probe in the utility model measurement mechanism is formed synoptic diagram.The long distance laser speed probe comprises laser generator 1 and the twin-lens assembly of being made up of lasing fluorescence camera lens 2 and scattered light amasthenic lens 3, comprises that also photoelectricity receives and switching device 4, photosignal amplification and shaping circuit 5 and Transistor-Transistor Logic level signal output apparatus 6; Laser generator 1 reclaims from being attached to the reflective membrane laser light reflected of rotating object through lasing fluorescence camera lens 2 emission of lasering beam and through scattered light amasthenic lens 3; Photoelectricity receives and switching device 4 receives the reflector laser that is reclaimed by scattered light amasthenic lens 3 and convert thereof into pulse electrical signal; Amplify and shaping circuit 5 will be amplified by the pulse electrical signal of photoelectric commutator conversion and is shaped as the Transistor-Transistor Logic level signal through photosignal, the Transistor-Transistor Logic level signal is exported to counting equipment by Transistor-Transistor Logic level signal output apparatus 6.
As shown in Figure 3, be the principle schematic of the twin-lens assembly in the long distance laser speed probe of the utility model.Scattered light amasthenic lens 3 in the twin-lens assembly is convex lens; The center position of convex lens has light source position hole 7; Have semiconductor laser 1 and luminous camera lens 2 on the central axis of convex lens, the place, focal position of convex lens has photoelectricity and receives and switching device 4; Laser generator, shines on the reflective membrane 87 through lasing fluorescence camera lens 2 emission laser from the light source position hole, through reflective membrane 8 laser light reflected reclaim and focus to through scattered light amasthenic lens 3 photoelectricity receives and switching device 4 on.Owing to have the twin-lens assembly of forming by lasing fluorescence camera lens and scattered light amasthenic lens in the long distance laser speed probe of the present invention; Effectively increased the receiving area of scattered light; The measuring distance of measurement mechanism of the present invention is improved greatly, can reach more than 10 meters.
Laser generator plays lasing light emitter in the long distance laser speed probe.Can produce the laser generator that monochromaticity is better, luminous point is comparatively concentrated at present has gas laser and semiconductor laser etc., and gas laser is not suitable in the laser speed probe of the utility model owing to reasons such as volume is big, complicated circuit.And have advantages such as advantages of small volume, luminous point are comparatively concentrated, feed circuit are simple by the semiconductor laser that laser diode is formed, be particularly suitable in the laser speed probe of the present invention.Therefore the size of long distance laser speed probe of the present invention has only Φ 4.5cm * 12cm, and the tachometric survey scope is at 20r/min～100000r/min.
Claims (6)
1. a rotating object rotating speed long distance laser measurement mechanism is characterized in that, comprises long distance laser speed probe that is fixed on the support and the counting equipment that links to each other with the long distance laser speed probe and is attached to the reflective membrane on the rotating object; Said long distance laser speed probe comprises laser generator and the twin-lens assembly of being made up of lasing fluorescence camera lens and scattered light amasthenic lens; Said laser generator through the twin-lens assembly lasing fluorescence camera lens emission of lasering beam and reclaim laser light reflected from the reflective membrane that is attached to rotating object through the scattered light amasthenic lens; Produce rotational speed pulse signal and export to said counting equipment, said counting equipment obtains the rotating speed of rotating object through the rotational speed pulse signal that receives the output of long distance laser speed probe.
2. rotating object rotating speed long distance laser measurement mechanism according to claim 1; It is characterized in that said long distance laser speed probe also comprises photoelectricity reception and switching device, photosignal amplification and shaping circuit and the Transistor-Transistor Logic level signal output apparatus that connects in order; Said photoelectricity receives and switching device receives the reflector laser that is reclaimed by the scattered light amasthenic lens and converts thereof into pulse electrical signal; Amplify and shaping circuit will be amplified by the pulse electrical signal of photoelectric commutator conversion and is shaped as the Transistor-Transistor Logic level signal through photosignal, the Transistor-Transistor Logic level signal is exported to said counting equipment by the Transistor-Transistor Logic level signal output apparatus.
3. rotating object rotating speed long distance laser measurement mechanism according to claim 2; It is characterized in that; Scattered light amasthenic lens in the said twin-lens assembly is convex lens; The center position of said convex lens has the light source position hole, has the lasing fluorescence camera lens on the central axis of convex lens, and the place, focal position of convex lens has photoelectricity and receives and switching device; Said laser generator, reclaims and focuses on photoelectricity reception and the switching device through the scattered light amasthenic lens through the reflective membrane laser light reflected through lasing fluorescence camera lens emission laser from the light source position hole.
4. rotating object rotating speed long distance laser measurement mechanism according to claim 3 is characterized in that said laser generator is the semiconductor laser of being made up of laser diode.
5. rotating object rotating speed long distance laser measurement mechanism according to claim 4 is characterized in that the measuring distance of said long distance laser speed probe reaches more than 10 meters.
6. rotating object rotating speed long distance laser measurement mechanism according to claim 4 is characterized in that the tachometric survey scope of said long distance laser speed probe is 20r/min～100000r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202024064U CN202599966U (en) | 2012-05-08 | 2012-05-08 | Remote laser measurement device of rotating speed of rotary objects |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012202024064U CN202599966U (en) | 2012-05-08 | 2012-05-08 | Remote laser measurement device of rotating speed of rotary objects |
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| CN202599966U true CN202599966U (en) | 2012-12-12 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931720A (en) * | 2015-06-25 | 2015-09-23 | 张卫忠 | Photoelectric conversion device and motor rotational speed measuring device comprising same |
| CN105242059A (en) * | 2015-10-12 | 2016-01-13 | 东南大学成贤学院 | Rotating speed measuring instrument by means of visual persistence and lens imaging principle, and measuring method thereof |
| CN106124792A (en) * | 2016-06-13 | 2016-11-16 | 海信集团有限公司 | A kind of colour wheel rotating speed measurement method and device |
| CN106370204A (en) * | 2016-10-28 | 2017-02-01 | 中国电子科技集团公司第四十四研究所 | Method for detecting rotating speed of spinning top |
| CN107340404A (en) * | 2017-06-12 | 2017-11-10 | 高睿 | A kind of method of non-cpntact measurement Axle Parts rotating speed |
| CN107402134A (en) * | 2017-09-07 | 2017-11-28 | 清华大学 | Rotating machinery tach signal synchronization detecting system based on hole inspecting hole |
| CN107741505A (en) * | 2017-11-16 | 2018-02-27 | 中国测试技术研究院 | Rotating speed measuring sensor and system |
| CN107831331A (en) * | 2017-12-06 | 2018-03-23 | 中国测试技术研究院 | Rotary body detection means and system |
| CN108414784A (en) * | 2017-02-07 | 2018-08-17 | 计算系统有限公司 | Laser strobe tachymeter |
| CN108507626A (en) * | 2018-06-25 | 2018-09-07 | 西安交通大学 | A kind of bearing movable component temperature-speed sync monitoring method based on quantum dot |
| CN108845256A (en) * | 2018-06-20 | 2018-11-20 | 天津中德应用技术大学 | Unmanned plane dynamic test system |
| CN111751567A (en) * | 2019-03-28 | 2020-10-09 | 比亚迪股份有限公司 | Rotational speed detection device and vehicle |
-
2012
- 2012-05-08 CN CN2012202024064U patent/CN202599966U/en not_active Expired - Lifetime
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931720A (en) * | 2015-06-25 | 2015-09-23 | 张卫忠 | Photoelectric conversion device and motor rotational speed measuring device comprising same |
| CN105242059B (en) * | 2015-10-12 | 2018-06-26 | 东南大学成贤学院 | Utilize the persistence of vision and the tachometric survey instrument and measuring method of lens imaging principle |
| CN105242059A (en) * | 2015-10-12 | 2016-01-13 | 东南大学成贤学院 | Rotating speed measuring instrument by means of visual persistence and lens imaging principle, and measuring method thereof |
| CN106124792A (en) * | 2016-06-13 | 2016-11-16 | 海信集团有限公司 | A kind of colour wheel rotating speed measurement method and device |
| CN106124792B (en) * | 2016-06-13 | 2019-01-25 | 海信集团有限公司 | A kind of colour wheel rotating speed measurement method and device |
| CN106370204A (en) * | 2016-10-28 | 2017-02-01 | 中国电子科技集团公司第四十四研究所 | Method for detecting rotating speed of spinning top |
| CN108414784B (en) * | 2017-02-07 | 2020-08-18 | 计算系统有限公司 | Laser stroboscopic velocimeter |
| CN108414784A (en) * | 2017-02-07 | 2018-08-17 | 计算系统有限公司 | Laser strobe tachymeter |
| CN107340404A (en) * | 2017-06-12 | 2017-11-10 | 高睿 | A kind of method of non-cpntact measurement Axle Parts rotating speed |
| CN107402134B (en) * | 2017-09-07 | 2018-08-03 | 清华大学 | Rotating machinery tach signal based on hole inspecting hole synchronizes detecting system |
| CN107402134A (en) * | 2017-09-07 | 2017-11-28 | 清华大学 | Rotating machinery tach signal synchronization detecting system based on hole inspecting hole |
| CN107741505A (en) * | 2017-11-16 | 2018-02-27 | 中国测试技术研究院 | Rotating speed measuring sensor and system |
| CN107741505B (en) * | 2017-11-16 | 2024-05-03 | 中国测试技术研究院 | Rotational speed measuring sensor and system |
| CN107831331A (en) * | 2017-12-06 | 2018-03-23 | 中国测试技术研究院 | Rotary body detection means and system |
| CN108845256A (en) * | 2018-06-20 | 2018-11-20 | 天津中德应用技术大学 | Unmanned plane dynamic test system |
| CN108507626A (en) * | 2018-06-25 | 2018-09-07 | 西安交通大学 | A kind of bearing movable component temperature-speed sync monitoring method based on quantum dot |
| CN111751567A (en) * | 2019-03-28 | 2020-10-09 | 比亚迪股份有限公司 | Rotational speed detection device and vehicle |
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