CN201392206Y - Opposed type laser detector - Google Patents
Opposed type laser detector Download PDFInfo
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- CN201392206Y CN201392206Y CN200920069541U CN200920069541U CN201392206Y CN 201392206 Y CN201392206 Y CN 201392206Y CN 200920069541 U CN200920069541 U CN 200920069541U CN 200920069541 U CN200920069541 U CN 200920069541U CN 201392206 Y CN201392206 Y CN 201392206Y
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Abstract
The utility model relates to an opposed type laser detector which comprises a laser transmitter and a laser receiver, wherein the optical axes of the laser transmitter and the laser receiver are oppositely arranged; the laser transmitter comprises a double-layer stainless steel I, a front cover I, a rear cover I, a transmitter lens module and a transmitter socket module; and the laser receiver comprises a double-layer stainless steel II, a front cover II, a rear cover II, a transmitter lens module and a transmitter socket module. The opposed type laser detector utilizes the laser transmitting and receiving to achieve position detection and control of the object, adopts 905nm laser, has the detection distance up to 500 meters, can penetrate the mist and flame, simultaneously conforms to the safety standards in transmitting power, is an AEL 1 type of laser product, and has good shock resistance. The opposed type laser detector has wide product usage, can be applied to fields such as cold and hot metal detection and material level control in a furnace, subway and train door safety control, vehicle ultra-high detection, anti-theft security detection, and the like, and has very broad application prospect.
Description
Technical field
The utility model relates to Laser emission and receiving trap, relates in particular to the correlation laser detector.
Background technology
The product of domestic application photoelectric technology inspected object position is more, but mostly is mode such as infrared, CCD greatly, and it is near to detect distance, and antijamming capability is relatively poor, and reliability is not very high, especially uses to be very limited under hot environment.This product has adopted the modulation system pulsed laser, and peak power is big, and average power is little, has both satisfied long distance test and has required (500m), can guarantee laser safety grade (1 grade) again, and the 904nm optical maser wavelength of selecting for use can prevent effectively that the various spectrum of industry spot from disturbing.Water-cooled structure can be applicable to the higher temperature occasion, is particularly useful for fields such as metallurgy industry.
Summary of the invention
The purpose of this utility model is exactly in order to overcome the defective that above-mentioned prior art exists, a kind of compact conformation to be provided, succinct practical correlation laser detector.
The purpose of this utility model can be achieved through the following technical solutions: the correlation laser detector, it is characterized in that, this detecting device comprises generating laser, laser pickoff, described generating laser, the laser pickoff optical axis is oppositely arranged, described generating laser comprises double-layer stainless steel pipe I, protecgulum I, bonnet I, transmitter camera lens module, transmitter socket module, described double-layer stainless steel pipe I comprises outer stainless-steel tube I, inner layer stainless steel tube I, described protecgulum I, bonnet I is respectively with transmitter camera lens module, after transmitter socket module is pressed on the inner layer stainless steel tube I both ends of the surface, with outer stainless-steel tube I by being threaded, described transmitter camera lens module is connected with transmitter socket module; Described laser pickoff comprises double-layer stainless steel pipe II, protecgulum II, bonnet II, receiver camera lens module, receiver socket module, described double-layer stainless steel pipe II comprises outer stainless-steel tube II, inner layer stainless steel tube II, after described protecgulum II, bonnet II are pressed on transmitter camera lens module, transmitter socket module on the inner layer stainless steel tube II both ends of the surface respectively, with outer stainless-steel tube II by being threaded, described receiver camera lens module is connected with receiver socket module.
Described outer stainless-steel tube I, outer stainless-steel tube II are respectively equipped with two interfaces up and down, import chilled water or vapour with the interlayer to double-layer stainless steel pipe I, double-layer stainless steel pipe II.
Between described transmitter camera lens module end face, transmitter socket module end face and the inner layer stainless steel tube I both ends of the surface, be equipped with the sealing plain washer between receiver camera lens module end face, receiver socket module end face and the inner layer stainless steel tube II both ends of the surface.
Described generating laser also comprises base I, dagger I, strut I, and described base I, dagger I welding is fixing, and described strut I and dagger I are by bolt, and bolt is passed through in described strut I and double-layer stainless steel pipe I bottom; Described laser pickoff also comprises base II, dagger II, strut II, and described base II, dagger II welding is fixing, and described strut II and dagger II are by bolt, and bolt is passed through in described strut II and double-layer stainless steel pipe II bottom.
Described generating laser emitted laser wavelength is 905nm.
Described transmitter camera lens module comprises power supply and protection module I, frequency modulation (PFM) module, Laser Driven transmitter module, and described power supply and protection module I, frequency modulation (PFM) module, Laser Driven transmitter module are connected successively; Described receiver camera lens module comprises power supply and protection module II, frequency demodulation frequency locking module, laser pick-off module, and described power supply and protection module II, frequency demodulation frequency locking module, laser pick-off module are connected successively.
Described power supply and protection module I, power supply and protection module II include counnter attack and high-pressure and overflowing protection module, change the pressing mold piece, change high-pressure modular, and described counnter attack and high-pressure and overflowing protection module, commentaries on classics pressing mold piece, commentaries on classics high-pressure modular are connected successively.
Described frequency modulation (PFM) module comprises square wave generation circuit, signal drive circuit, and described square wave generation circuit is connected with signal drive circuit; Described frequency demodulation frequency locking module comprises frequency demodulation circuit, signal adjustment circuit, and this signal adjustment circuit is connected with frequency demodulation circuit.
Described Laser Driven transmitter module comprises laser drive circuit, laser tube holding circuit, laser tube, and described laser drive circuit, laser tube holding circuit, laser tube are connected successively; Described laser pick-off module comprises signal transformation circuit, signal amplification circuit, photosensitive tube, and described photosensitive tube, signal amplification circuit, signal transformation circuit are connected successively; Described laser tube and photosensitive tube optical axis are oppositely arranged.
Compared with prior art, the utility model utilizes Laser emission and reception, realizes that object space detects and control, adopt 905nm laser, detect distance and can reach 500 meters, can penetrate water smoke and flame, emissive power meets safety standard simultaneously, is AEL 1 class laser product, and shock resistance is good; Product purpose is extensive, can be applicable to fields such as material level control in the cold and hot metal detection of metallurgy industry and the stove, subway and the security control of train car door, the detection of vehicle superelevation, anti-theft security detection, and market is big, and application prospect is very extensive.
Description of drawings
Fig. 1 is the complete machine explosive view of generating laser of the present utility model;
Fig. 2 is the explosive view of the transmitter camera lens module of generating laser of the present utility model;
Fig. 3 is the explosive view of the transmitter socket module of generating laser of the present utility model;
Fig. 4 is the complete machine explosive view of laser pickoff of the present utility model;
Fig. 5 is the explosive view of the receiver camera lens module of laser pickoff of the present utility model;
Fig. 6 is the explosive view of the receiver socket module of laser pickoff of the present utility model;
Fig. 7 is welding base of the present utility model and dagger synoptic diagram;
Fig. 8 is the middle axial plane sectional view of double-layer stainless steel pipe of the present utility model;
Fig. 9 is the partial enlarged drawing of the A part of Fig. 8;
Figure 10 is the circuit theory synoptic diagram of the transmitter camera lens module of generating laser of the present utility model;
Figure 11 is the circuit theory synoptic diagram of the receiver camera lens module of laser pickoff of the present utility model;
Figure 12 is the circuit theory synoptic diagram of power supply and protection module among Figure 10 and Figure 11;
Figure 13 is the circuit theory synoptic diagram of Figure 10 medium frequency modulation module;
Figure 14 is the circuit theory synoptic diagram of Laser Driven transmitter module among Figure 10;
Figure 15 is the circuit theory synoptic diagram of Figure 11 medium frequency demodulation locking module;
Figure 16 is the circuit theory synoptic diagram of laser pick-off module among Figure 11.
Embodiment
Below in conjunction with specific embodiment the utility model is described further.
As Fig. 1～shown in Figure 9, the correlation laser detector, this detecting device comprises generating laser, laser pickoff, described generating laser, the laser pickoff optical axis is oppositely arranged, described generating laser comprises double-layer stainless steel pipe I 40, protecgulum I 10, bonnet I 10, transmitter camera lens module 110, transmitter socket module 120, described double-layer stainless steel pipe I comprises outer stainless-steel tube I 41, inner layer stainless steel tube I 42, described protecgulum I10, bonnet I 10 is respectively with transmitter camera lens module 110, after transmitter socket module 120 is pressed on inner layer stainless steel tube I 42 both ends of the surface, with outer stainless-steel tube I 41 by being threaded, described transmitter camera lens module 110 is connected with transmitter socket module 120; Described laser pickoff comprises double-layer stainless steel pipe II 40, protecgulum II 10, bonnet II 10, receiver camera lens module 20, receiver socket module 40, described double-layer stainless steel pipe II 40 comprises outer stainless-steel tube II 41, inner layer stainless steel tube II 42, after described protecgulum II 10, bonnet II 10 are pressed on transmitter camera lens module 20, transmitter socket module 50 on inner layer stainless steel tube II 42 both ends of the surface respectively, with outer stainless-steel tube II41 by being threaded, described receiver camera lens module 20 is connected with receiver socket module 50.
Described outer stainless-steel tube I 41, outer stainless-steel tube II 41 are respectively equipped with two interfaces 44 up and down, import chilled water or vapour with the interlayer to double-layer stainless steel pipe I 40, double-layer stainless steel pipe II 40.
Between described transmitter camera lens module 110 end faces, transmitter socket module 120 end faces and the inner layer stainless steel tube I42 both ends of the surface, be equipped with sealing plain washer 30 between receiver camera lens module 20 end faces, receiver socket module 30 end faces and inner layer stainless steel tube II 42 both ends of the surface.
Described generating laser also comprises base I 61, dagger I 62, strut I 90, described base I 61, dagger I 62 welding are fixed as firm banking 60, described strut I 90 and dagger I 62 are fixing by bolt 80, nut 70, and described strut I and double-layer stainless steel pipe I bottom are fixing by bolt 100, nut 70; Described laser pickoff also comprises base II 61, dagger II 62, strut II 90, described base II 61, dagger II62 welding is fixed as firm banking 60, described strut II90 and dagger II62 are fixing by bolt 80, nut 70, and described strut II and double-layer stainless steel pipe II bottom are fixing by bolt 100, nut 70.
Described generating laser emitted laser wavelength is 905nm.
This detecting device is realized correlation function by a pair of Laser emission and receiving trap (being referred to as generating laser and laser pickoff in this explanation), and embodiment is as follows:
By the cooled device of a kind of double-layer stainless steel pipe of welding formation, with reference to Fig. 8, two pipe adapters up and down of outer stainless-steel tube can divide importing/derivation chilled water or vapour, and cooling is implemented at the interlayer position.Outer stainless-steel tube two ends have screw thread to cooperate with bonnet 10, with reference to Fig. 1 and Fig. 4, pass through screw-threaded coupling, the bonnet at two ends is pressed on receiver camera lens module (or transmitter camera lens module) and receptacle socket module (or transmitter socket module) on the inner layer stainless steel tube end face respectively, be furnished with the sealing plain washer between module end face and inner layer stainless steel tube end face, realize sealing by pressure.
The whole machine installation step: camera lens and the socket module with receiver and transmitter assembles at first respectively, is inserted in respectively along the stainless-steel tube two ends then, and screws the bonnet locking, in the welding base of packing at last.
With reference to Fig. 2, transmitter lens unit 113 is screwed in the transmitter seat 112, utilize threaded engagement to fix, use two screws 115 that transmitter circuit board 1 (being numbered 114) is fixed on the transmitter lens unit 113 again, with the sealing viscose glue transmitter cover plate 111 is fixed in the default groove of transmitter seat 112 at last.
With reference to Fig. 3, at first two light emitting diodes 505 are inserted in the corresponding hole of transmitter circuit board 2 (being numbered 1201) and weld, then with two copper insulated columns 503 by screw-threaded coupling in the screw of transmitter socket cover 1202 correspondences, use two screws 501 that transmitter circuit board 2 (being numbered 1201) is fixed on the corresponding copper insulated column 503 again, will connect in the screw of socket 510 screw-in transmitter socket covers 1202 correspondences and with transmitter circuit board 2 (being numbered 1201) at last.[note: module pre-installation: pour into an amount of transparent silica gel in two through holes in transmitter socket cover 1202 surface and form two blind holes,, promptly utilize transparent silica gel to have both leaded light and sealing function simultaneously] so that the light of two light emitting diodes 505 can conducting
With reference to Fig. 5, receiver lens unit 23 is screwed in the receiver seat 22, utilize threaded engagement to fix, again 3 copper insulated columns 24 are locked in the screw of receiver lens unit correspondence, with screw 26 that acceptor circuit plate 25 is fixing then, with fluid sealant receiver cover plate 21 is fixed in the default groove of receiver seat 22 at last.
With reference to Fig. 6, at first three light emitting diodes 505 are inserted in the corresponding hole of acceptor circuit plates 1 (being numbered 504) and weld, and insert two potentiometers 507 in the corresponding groove of acceptor circuit plates 1 (being numbered 504) and weld, two sealing gaskets 508 are nested into the axle journal of potentiometer 507, then with two copper insulated columns 506 by screw-threaded coupling in the screw of receiver socket cover 509 correspondences, the copper insulated column 503 double screws of doing use, it cooperates with copper insulated column 506 and with acceptor circuit plate 1 (being numbered 504) locking, uses two screws 501 that acceptor circuit plate 3 (being numbered 502) is locked on the copper insulated column 503 again; Two potentiometer plain cushions 511 are put into the circular groove of receiver socket cover 509 correspondences, pass through screw-threaded coupling plain cushion 511 with two nuts 512 again, and potentiometer 507 is fixing, will connect in the hole of socket 510 screw-in receiver socket covers 509 correspondences and with acceptor circuit plate 1 (being numbered 504) at last.[note: module pre-installation: pour into an amount of transparent silica gel in three through holes on receiver socket cover 509 surfaces and form three blind holes,, promptly utilize transparent silica gel to have both leaded light and sealing function simultaneously] so that the light of three light emitting diodes 505 can conducting
With reference to Fig. 7, base 61 and dagger 62 are by being welded and fused, as Fig. 1 and shown in Figure 4, pack in the dagger 62 in strut 90 lower ends, utilize bolt 80 and nut 70 lockings, the back up pad 45 of strut upper plane and double-layer stainless steel pipe owing to strut can move up and down and rotate, thereby guarantees that receiver and transmitter carry out the adjustment in orientation by bolt 100 and hexagonal nut 70 lockings.Outer stainless-steel tube and inner layer stainless steel tube welding welded seal 43.
The utility model apparatus structure compactness, succinct practical.
A whole set of products comprises transmitter and receiver two parts, is separated from each other on the structure, and optical axis is relative during installation.The light that transmitter sends directly enters receiver, and when object to be detected passed through between transmitter and the receiver and blocks light, receiver sent alerting signal, the actuating of relay.
The employed optical maser wavelength of this product is 905nm, belongs to near-infrared laser.Compare with the laser of other wavelength, the infrared ray of 905nm is less to human skin cell's membrane damage, and security is higher.
The pulsed light of this product institute emitted laser for repeating, frequency is 1K, the strict control of the width of each light pulse, pulsewidth is in 10ns (nanosecond) level, and dutycycle is 100,000/.Though so used more powerful laser tube, but average laser power is very low, and (Maximum Permissible Exposure (MPE): human body is subjected to the laser emission level that laser radiation can not produce adverse consequences under the normal condition to be lower than the MPE standard that national standard (GB 7247) and IEC (IEC 60825) formulated.The MPE level refer to eye or skin shone after at once or the maximum illumination level that takes place of long-time back not damaged, it is with radiation wavelength, pulsewidth or irradiation time, biological tissue in the hole and be exposed to the as seen relevant with the size of the retina image-forming in the near-infrared radiation etc. of 400nm-1400nm).And the laser tube that uses high-power (5W) has guaranteed detection range far away (can reach 500m).
Transmitter portion comprises power supply and protection module, frequency modulation (PFM) module, Laser Driven transmitter module.As shown in figure 10.
Receiver partly comprises power supply and protection module, laser pick-off module, frequency demodulation module.As shown in figure 11.
Transmitter is identical with the power supply and the protection module of receiver part; comprise power supply input counnter attack and high-pressure and overflowing protection module, commentaries on classics pressing mold piece (24V commentaries on classics 5V system; because of inside chip uses 5V power supply more), (5V changes high-pressure modular to change high-pressure modular; Laser emission and receiving unit use high pressure), as shown in figure 12.
The frequency modulation (PFM) module of transmitter portion is used to produce the vibration square-wave signal of fixed frequency, and this product uses 1KHz, comprises square wave generation circuit and signal drive circuit, as shown in figure 13.
The Laser Driven transmitter module of transmitter portion is used for driving laser pipe emission laser pulse signal under the triggering of input square-wave signal.Comprise laser drive circuit, laser tube and laser tube holding circuit.As shown in figure 14.Driving tube produces high-voltage pulse signal under the triggering of input square-wave signal, the laser tube holding circuit is used to protect laser tube, prevents that added overtension in its two ends or the electric current that passes through are excessive.
The frequency demodulation module of receiver part is used to receive the signal of fixed frequency, when the received signal frequency of receiver module is the frequency (1K) of being scheduled to, then exports frequency locking and becomes function signal.By signal levelling circuit, frequency locking circuit.As shown in figure 15.
The laser pick-off module of receiver part is used to receive transmitter module institute emitted laser signal, comprises photosensitive tube circuit, signal amplification circuit, signal transformation circuit.As shown in figure 16.Photosensitive tube is converted into electric signal with the light signal that receives, and is amplified by signal amplification circuit, is square-wave signal by the shaping circuit conditioning then.
The frequency modulation (PFM) module of transmitter portion is the square-wave signal that produces 1KHz with voice modulation demodulation chip 567 and peripheral circuit.And, improved the load capacity of output frequency signal by chip for driving EL7104 driving.
The Laser Driven transmitter module of transmitter portion adopts snowslide pipe FMMT413, and the narrow pulse signal that utilizes its snowslide to produce big electric current comes driving laser pipe SPL PL90.
The laser pick-off module of receiver part is at first used high speed signal to put to beat device that the electric signal of photosensitive tube output is amplified to use high speed voltage comparator that signal shaping is square-wave signal then.
The frequency demodulation module of receiver part at first adopts d type flip flop NL17SZ74 input signal to be converted into the square-wave signal of dutycycle 50%, deliver to the input pin of voice modulation demodulation chip LMC567CM then, it is 1K that the concussion frequency of LMC567CM has periphery circuit design.
Claims (9)
1. correlation laser detector, it is characterized in that, this detecting device comprises generating laser, laser pickoff, described generating laser, the laser pickoff optical axis is oppositely arranged, described generating laser comprises double-layer stainless steel pipe I, protecgulum I, bonnet I, transmitter camera lens module, transmitter socket module, described double-layer stainless steel pipe I comprises outer stainless-steel tube I, inner layer stainless steel tube I, described protecgulum I, bonnet I is respectively with transmitter camera lens module, after transmitter socket module is pressed on the inner layer stainless steel tube I both ends of the surface, with outer stainless-steel tube I by being threaded, described transmitter camera lens module is connected with transmitter socket module; Described laser pickoff comprises double-layer stainless steel pipe II, protecgulum II, bonnet II, receiver camera lens module, receiver socket module, described double-layer stainless steel pipe II comprises outer stainless-steel tube II, inner layer stainless steel tube II, after described protecgulum II, bonnet II are pressed on transmitter camera lens module, transmitter socket module on the inner layer stainless steel tube II both ends of the surface respectively, with outer stainless-steel tube II by being threaded, described receiver camera lens module is connected with receiver socket module.
2. correlation laser detector according to claim 1 is characterized in that, described outer stainless-steel tube I, outer stainless-steel tube II are respectively equipped with two interfaces up and down, imports chilled water or vapour with the interlayer to double-layer stainless steel pipe I, double-layer stainless steel pipe II.
3. correlation laser detector according to claim 1, it is characterized in that, between described transmitter camera lens module end face, transmitter socket module end face and the inner layer stainless steel tube I both ends of the surface, be equipped with the sealing plain washer between receiver camera lens module end face, receiver socket module end face and the inner layer stainless steel tube II both ends of the surface.
4. correlation laser detector according to claim 1, it is characterized in that, described generating laser also comprises base I, dagger I, strut I, described base I, dagger I welding is fixing, described strut I and dagger I are by bolt, and bolt is passed through in described strut I and double-layer stainless steel pipe I bottom; Described laser pickoff also comprises base II, dagger II, strut II, and described base II, dagger II welding is fixing, and described strut II and dagger II are by bolt, and bolt is passed through in described strut II and double-layer stainless steel pipe II bottom.
5. correlation laser detector according to claim 1 is characterized in that, described generating laser emitted laser wavelength is 905nm.
6. correlation laser detector according to claim 1, it is characterized in that, described transmitter camera lens module comprises power supply and protection module I, frequency modulation (PFM) module, Laser Driven transmitter module, and described power supply and protection module I, frequency modulation (PFM) module, Laser Driven transmitter module are connected successively; Described receiver camera lens module comprises power supply and protection module II, frequency demodulation frequency locking module, laser pick-off module, and described power supply and protection module II, frequency demodulation frequency locking module, laser pick-off module are connected successively.
7. correlation laser detector according to claim 6; it is characterized in that; described power supply and protection module I, power supply and protection module II include counnter attack and high-pressure and overflowing protection module, change the pressing mold piece, change high-pressure modular, and described counnter attack and high-pressure and overflowing protection module, commentaries on classics pressing mold piece, commentaries on classics high-pressure modular are connected successively.
8. correlation laser detector according to claim 6 is characterized in that, described frequency modulation (PFM) module comprises square wave generation circuit, signal drive circuit, and described square wave generation circuit is connected with signal drive circuit; Described frequency demodulation frequency locking module comprises frequency demodulation circuit, signal adjustment circuit, and this signal adjustment circuit is connected with frequency demodulation circuit.
9. correlation laser detector according to claim 6, it is characterized in that, described Laser Driven transmitter module comprises laser drive circuit, laser tube holding circuit, laser tube, and described laser drive circuit, laser tube holding circuit, laser tube are connected successively; Described laser pick-off module comprises signal transformation circuit, signal amplification circuit, photosensitive tube, and described photosensitive tube, signal amplification circuit, signal transformation circuit are connected successively; Described laser tube and photosensitive tube optical axis are oppositely arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920069541U CN201392206Y (en) | 2009-03-27 | 2009-03-27 | Opposed type laser detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920069541U CN201392206Y (en) | 2009-03-27 | 2009-03-27 | Opposed type laser detector |
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| Publication Number | Publication Date |
|---|---|
| CN201392206Y true CN201392206Y (en) | 2010-01-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920069541U Expired - Fee Related CN201392206Y (en) | 2009-03-27 | 2009-03-27 | Opposed type laser detector |
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| CN (1) | CN201392206Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105278057A (en) * | 2015-11-11 | 2016-01-27 | 西安电子科技大学 | Alignment method of optical transceiver of short-distance free-space optical intercommunication |
-
2009
- 2009-03-27 CN CN200920069541U patent/CN201392206Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105278057A (en) * | 2015-11-11 | 2016-01-27 | 西安电子科技大学 | Alignment method of optical transceiver of short-distance free-space optical intercommunication |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100127 Termination date: 20130327 |