CN204044174U - A kind of locomotive photoelectric sensor displacement receiving array device - Google Patents
A kind of locomotive photoelectric sensor displacement receiving array device Download PDFInfo
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- CN204044174U CN204044174U CN201420249520.1U CN201420249520U CN204044174U CN 204044174 U CN204044174 U CN 204044174U CN 201420249520 U CN201420249520 U CN 201420249520U CN 204044174 U CN204044174 U CN 204044174U
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Abstract
A kind of locomotive photoelectric sensor displacement receiving array device, is characterized in that: locomotive photoelectric sensor displacement receiving array device substrate circuit, photoelectric receiving tube, photoelectricity order grid and housing comprise four parts; Photoelectric receiving tube is welded on substrate circuit, the photoelectric receiving tube that photoelectric receiving tube is encapsulated by paster; Photoelectric receiving tube is covered with photoelectricity order grid, and photoelectricity order grid is wrapped up by fenestrated shell and being solidly installed with substrate circuit.The utility model has the advantage of: collection collection signal being changed into porous gap by a single hole gap, compensate for the impact that mismachining tolerance causes naturally, changes multi-tube array collection into by single tube collection.Can at double or the raising precision of decades of times.Also any impact can not be produced on the cutting of light.Also do not need through very loaded down with trivial details Installation and Debugging, and optical chopper supporting comparatively speaking and circuit board thereof are installed also convenient.
Description
Technical field
The utility model relates to a kind of signal transfer method and device, refers in particular to a kind of transmission method of railway locomotive tach signal and the key feature of sensor, belongs to information transmission technique field.
Background technology
The rotating speed of locomotive is an important operational factor, need ceaselessly to observe it in locomotive operation, traditional locomotive Rotating speed measring is all obtain an electric signal by a sensor from axletree, and then this electric signal is delivered in detection system, reflect eventually through tachometer gage.
The photoelectric sensor principle of work being mainly used in locomotive axle measurement of rotating speed is at present: the end face special lenticular lenses (metal disk of the uniform wedge type grating of radial circumference) being coaxially arranged on rotor, make itself and rotor coaxial with frequently rotating, by the photosensitive route of cutting grooved optical chopper (luminescent device of grooved optical chopper and sensor devices are placed in the lenticular lenses both sides of rotation), thus make sensor devices experience interrupted light signal, through opto-electronic conversion, electric signal shaping forms pulse signal, its signal frequency is directly proportional to rotor rotating speed, rear class just can draw turning frequently of rotor by simply changing and calculating.
But accomplish very accurately to test the speed, the dutycycle of pulse signal is most important technical indicator, and general theory requires that in the upset cycle, high level (or low level) accounts for 50% of the whole cycle; Because following several reason causes being difficult to reach ideal state, cause the dutycycle dispersiveness of all the sensors very large.
Fluting in the lenticular lenses of present use is wedge-shaped slot, is different at the width of the radial slot of lenticular lenses:
1, (more and more wider to round edge by the center of circle), the irradiation track of light in lenticular lenses must be made to be a regular circle, and therefore, concentricity requirement is very high as far as possible, such guarantee light the hole of grating of process consistent with the width of muscle.The right alignment of the position that lenticular lenses is installed and rotor has deviation a little, will affect the illumination track of optical chopper, cause dutycycle to change, thus generation signal rocks from side to side, and affects signal quality.
2, the current system of the whole Use Adjustment light emitting diode of industry obtains dutycycle about 50%.Therefore, luminotron has a strong impact on luminescence efficiency by temperature action and causes change in duty cycle.(such as; Summer, locomotive half right and left can reach tens of degree by the solar radiation temperature difference.）
3, the processing of grating encoder inherently has certain mismachining tolerance, cause sampled signal and output signal can not be consistent so can occur exceeding minimum duty cycle is 45% large 52% to go beyond the scope, locomotive microcomputer system F/V circuit sampling ratio comparatively can erroneous judgement for idle running, cause locomotive automatically to sand and reduce traction current to get rid of idle running, and in fact do not produce vacuum and turn, this is that a kind of false idle running forms very large threat (such as to locomotive safety running; If the frequent locomotive that occurs of false idle running is not climbed large slope and produces slope and stop accident when steep gradient climbed by locomotive with all strength) and grating encoder to be cut or chemical corrosion be all difficult to accomplish that machining precision error is less than 0.01mm, 200 holes and grid, the i.e. size in hole is divided in the garden reticule etc. of circumference 45mm by the code-disc calculating a known such as diameter 52mm; (k=45 π/400=0.35mm) processes least error when being 0.01mm, so dutycycle least error is 1.43%, (0.35/50=0.007mm, 0.01/0.007=1.43%) because minimum and maximum error amount is that 2 times=2.86% so just to there will be maximum duty cycle be 52.86 minimum duty cycle 47.14, therefore industry all controls dutycycle to float below 50%.When maximum error is 0.05, maximum duty cycle is 57.14 minimum duty cycle 42.86.
4, locomotive speed sensor at least will have two passages, and A channel will be ahead of channel B 90
zero reached by the adjustment of the installation site of two grooved photoelectric interrupters, adopting when adjusting oscillograph to observe the installation site of moving photoconductor interrupter repeatedly, also may produce displacement when tightening screw, therefore repeatedly adjusting and just can reach permissible error requirement.
Therefore in fact existing locomotive axle measurement of rotating speed is not very accurately, and industry expects a kind of measuring method or the innovative approach appearance that can reduce or avoid this error in a hurry.
Do not find that there is the patent literature constructed with the utility model by patent retrieval, to have mainly containing of certain relation following with the utility model:
1, patent publication No. is CN 201007718 Y, name is called the utility model patent of " locomotive axle terminal photoelectric rotary speed sensor ", which disclose a kind of locomotive axle terminal photoelectric rotary speed sensor, comprise the mount pad be arranged on locomotive, mount pad is tightly connected outer cover, mount pad be provided with the Hooks coupling universal coupling be connected with locomotive axle and the sensor control circuit carrying out photoelectric signal transformation in outer cover, Hooks coupling universal coupling is provided with the grating being with multiple light hole, sensor control circuit is by power supply circuit, EMC functional circuit, photoelectric interrupter, signal processing circuit and signal output apparatus composition, locomotive axle input power drives grating to rotate, the light activated element on photoelectric interrupter is made to produce the photosensitive number of times equal with grating light hole printing opacity number of times, thus in sensor control circuit, export the height electric impulse signal of respective numbers.This sensor control circuit is made up of power supply circuit, EMC functional circuit, photoelectric interrupter, signal processing circuit and signal output apparatus; Described power supply circuit is through EMC functional circuit, and EMC functional circuit is connected photoelectric interrupter with the output terminal of grating, and EMC functional circuit provides power supply and reference potential to photoelectric interrupter and signal processing circuit simultaneously.
2, the patent No. is CN00236027.6, name is called the utility model patent of " a kind of Photoelectric Rotating-speed Sensor at Axle End of Locomotive having pilot lamp to show ", which disclose a kind of Photoelectric Rotating-speed Sensor at Axle End of Locomotive having pilot lamp to show, vehicle wheel rotational speed shaft extension imported into makes the optical code disk synchronous rotary on main shaft, and the tacho-pulse frequency signal that inswept photoelectric conversion module converts out is thus exported by electric connector.The utility model is provided with detection display circuit in housing, and to the tacho-pulse on-line checkingi exported, testing result is shown by the outer pilot lamp of housing immediately.
3, the patent No. is CN201310481535.0, name is called the utility model patent of " locomotive hyperchannel Hall revolution speed transducer and installation method thereof ", which disclose a kind of locomotive hyperchannel Hall revolution speed transducer and installation method thereof, sensor comprises: inductive component and treatment circuit plate, treatment circuit plate comprises power supply processing circuit and signal processing circuit.From the power supply input signal of outside after power supply processing circuit process, be respectively inductive component and signal processing circuit is powered.Inductive component comprises double-channel Hall element more than two, the pulse signal with measure speed gears rotation change sensed is delivered to signal processing circuit by inductive component, after the amplification of signal processing circuit pulse signals, shaping, export more than four tunnels treated signal to host computer.
Though these patents above-mentioned have all related to detection method or the device of some locomotive rotating speeds, but lack and solve the method that locomotive axle measurement of rotating speed is not very accurate problem, therefore to how to improve locomotive axle rotatation speed test method further, improve measuring accuracy, still need to be improved further.
Utility model content
The purpose of this utility model is exactly some problems existed according to the photoelectric sensor method of testing of current locomotive axle measurement of rotating speed, provides the more accurate signal acquisition method of a kind of test and critical component; This signal acquisition method and critical component effectively can improve photoelectric sensor signals collecting precision.
According to above-mentioned utility model object, the technical scheme that the utility model proposes is: a kind of locomotive photoelectric sensor displacement receiving array device, comprises substrate circuit, photoelectric receiving tube, photoelectricity order grid and housing four parts; Photoelectric receiving tube is welded on substrate circuit, and the photoelectric receiving tube that photoelectric receiving tube is encapsulated by paster forms array; Photoelectric receiving tube is covered with photoelectricity order grid, and photoelectricity order grid is wrapped up by fenestrated shell and being solidly installed with substrate circuit.
Further, described substrate circuit is the square PCB circuit be made up of FR4 material or ceramic substrate, forms paster or PID direct inserting device.
Further, described locomotive photoelectric sensor displacement receiving array device is made up of 4 photoelectric receiving tubes, can complete two channel signal collections and phase differential solidifies, assembling sensor does not need adjustment phase differential to coordinate with interlock circuit can make single supply two passage four-way, dual power supply 2-8 passage.
Further, described locomotive photoelectric sensor displacement receiving array device is made up of 8 photoelectric receiving tubes, can complete four-way signals collecting and phase differential solidifies, assembling sensor does not need adjustment phase differential to coordinate with interlock circuit can make single supply four-way, dual power supply 4-8 passage, four power supply 4-16 passages.
Further, described photoelectricity order grid by the thick optical glass of 1mm after overexposure plated film (coating 3-5 micron) through precision optics developing and printing processing, (precision can reach 0.005mm) also can adopt film material (0.18 is thick) to process through film printer; (precision can reach 0.003mm) makes the collection order grid with grating encoder same holes distance;
Further, described photoelectricity order grid order grid are divided into four (A, B, C, D) regions, have two kinds of arrangement modes:
1) Y-direction arrangement: the advanced B90 of A
zero , the advanced D90 of C
zero ,a and C is reverse, B and D is reverse;
2) X-direction arrangement: the advanced C90 of A
zero , D90 before B ultrasonic
zero ,a and B is reverse, C and D is reverse.
Further, described housing uses the latten(-tin) of 0.1-0.15mm to process through chemical corrosion method, surface gold-plating or plate false golden anti-oxidant treatment.
The utility model has the advantage of: collection collection signal being changed into porous gap by a single hole gap, compensate for the impact that mismachining tolerance causes naturally, changes multi-tube array collection into by single tube collection.Can at double or the raising precision of decades of times.Also any impact can not be produced on the cutting of light.Also do not need through very loaded down with trivial details Installation and Debugging, and optical chopper supporting comparatively speaking and circuit board thereof are installed also convenient.
Accompanying drawing explanation
Fig. 1 is theory structure schematic diagram of the present invention;
Fig. 2 is multichannel light electric displacement receiving array device architecture schematic diagram of the present invention;
Fig. 3 is multichannel light electric displacement receiving array device detonation configuration figure of the present invention;
Fig. 4 is multichannel light electric displacement receiving array device photoelectric order grid partitioned organization schematic diagram of the present invention.
Embodiment
Below in conjunction with embodiment, the utility model is further described.
Embodiment one
As shown in drawings, a kind of multichannel light electric displacement receiving array device, comprises four parts; Substrate circuit 1, photoelectric receiving tube 2, photoelectricity order grid 3 and housing 4; Photoelectric receiving tube 2 is welded on substrate circuit 1, and photoelectric receiving tube 2 takes photoelectric displacement receiving array to arrange, and forms photoelectric displacement receiving array device by multiple photoelectric receiving tube 2; The photoelectric receiving tube that photoelectric receiving tube 2 is encapsulated by paster forms; Photoelectric receiving tube 2 is covered with photoelectricity order grid 3, photoelectricity order grid 3 is arranged with ratio hole order 5; Photoelectricity order grid 3 is wrapped up by fenestrated shell 4 and being solidly installed with substrate circuit 1.
Described substrate circuit 1 is that the rectangle PCB circuit be made up of FR4 material forms paster.
Described photoelectric displacement receiving array device is made up of 4 photoelectric receiving tubes, can complete two channel signal collections and phase differential solidifies, assembling sensor does not need adjustment phase differential to coordinate with interlock circuit to make single supply two passage four-way, dual power supply 2-8 passage.
Described photoelectricity order grid 3 by the thick optical glass of 1mm after overexposure plated film (coating 3-5 micron) through precision optics developing and printing processing, (precision can reach 0.005mm) makes the collection order grid with grating encoder same holes distance;
The ratio hole order 5 order grid of described photoelectricity order grid 3 are divided into four (A, B, C, D) regions, arrangement mode following (as described in accompanying drawing 3):
Y-direction arranges; The advanced B90 of A
zero , the advanced D90 of C
zero ,a and C is reverse, B and D is reverse;
Described housing uses the latten(-tin) of 0.1-0.15mm to process through chemical corrosion method, surface gold-plating or plate false golden anti-oxidant treatment.
The locomotive photoelectric sensor displacement method of reseptance of above-mentioned multichannel light electric displacement receiving array device is utilized to be adopt porous gap and multi-tube array mode to gather locomotive photoelectric sensor displacement signal; On railway locomotive photoelectric sensor, 6 load onto annular PCB 7(or claim annular printed circuit version), by multichannel light electric displacement receiving array device 8 welded and installed in annular PCB 7, install above multichannel light electric displacement receiving array device 8
Φ4.6-
Φ10 infraluminescence pipes 9, infraluminescence pipe 9 is arranged on support 11, and infrared light launched by infraluminescence pipe 9, launches diffusion angle 3-10
zero?
(directional light is best), and between multichannel light electric displacement receiving array device 8 and infraluminescence pipe 9, be provided with the grating encoder 10 of rotation, the grating encoder 10 that the photosensitive path of multichannel light electric displacement receiving array device 8 is rotated cuts, according to photoelectric sensor signals collecting principle, convert thereof into electric signal after the light-receiving end of the optical chopper of multichannel light electric displacement receiving array device 8 experiences interrupted light signal, after shaping, form the electric signal relevant with rotor rotational frequency.
Grating encoder 10 cutting that the photosensitive path of described multichannel light electric displacement receiving array device 8 is rotated is opposite multichannel light electric displacement receiving array device 8 being placed on infraluminescence pipe 9 emitted light, between multichannel light electric displacement receiving array device 8 and infraluminescence pipe 9, place a grating encoder rotated 10, grating encoder 10 is equidistantly provided with porous gap; Be placed under a photoelectricity order grid 3 by the photoelectric receiving tube 2 of multichannel light electric displacement receiving array device 8, photoelectricity order grid 3 is provided with ratio hole order 5 simultaneously; By the rotation of grating encoder 10 make the ratio hole order 5 in the porous gap on grating encoder 10 and photoelectricity order grid 3 alternately the light formed infraluminescence pipe sends intermittently cut, it is interrupted light that photoelectric receiving tube 2 receives the light that infraluminescence pipe 9 sends, and by photoelectric receiving tube 2 according to photoelectric sensor signals collecting principle, photoelectric receiving tube converts electric signal to by experiencing interrupted light signal, after shaping, form the electric signal relevant with rotor rotational frequency.
Owing to adopting porous signals collecting to make mismachining tolerance be reduced to ratio hole order multiple, such as; The hole count of photoelectricity order grid is 4 is so+0.01 ,+0.05 ,-0.02 ,-0.01 by adjacent four positions, hole of code-disc actual error distribution of former processing mode, therefore, and ∑
4/ 4=0.0025 is namely equivalent to equal precision and improves about 20 times, and (0.0025/0.007=0.357), when maximum error is 0.05, maximum duty cycle is 50.357 minimum duty cycle 49.643.Because luminotron can not be that directional light always has certain scattering angle so photoelectricity order grid is depended in more high-precision raising in practical application, the mismachining tolerance of photoelectricity order grid of the present invention is 0.005mm, when being 4 hole by photoelectricity order grid, actual error is still 0.005mm and improves 1 times than former error, coordinate again high-precision grating encoder therefore precision can improve decades of times to hundred times, the Duty ratio control of 50% can be coordinated with circuit to reach in (50 ± 0.01-0.1%) scope and exempt from debugging and become possibility.
To be phase differential between two passages have cured adding man-hour for another feature of photoelectricity order grid, and order grid are divided into two rows and are staggered 90
zero , therefore phase differential does not need debugging to reach high-precision requirement.
More than illustrate that the more precision of photoelectricity order grid hole order number are higher, when receiving tube be of a size of 3mm long time, 200 hole order code-discs receive order grid can reach 4 orders, uses infrared receiving tube parallel connection to make reception effective length reach 4mm, then order gate hole number reaches 6 orders, and resolution is higher.
Embodiment two:
A kind of multichannel light electric displacement receiving array device, comprises four parts; Substrate circuit, photoelectric receiving tube, photoelectricity order grid and housing; Photoelectric receiving tube is welded on substrate circuit, and the photoelectric receiving tube that photoelectric receiving tube is encapsulated by paster forms array; Photoelectric receiving tube is covered with photoelectricity order grid, and photoelectricity order grid is wrapped up by fenestrated shell and being solidly installed with substrate circuit.
Described substrate circuit is that the square PCB circuit be made up of ceramic substrate forms paster.
Described photoelectric displacement receiving array device is made up of 8 photoelectric receiving tubes, can complete four-way signals collecting and phase differential solidifies, assembling sensor does not need adjustment phase differential to coordinate with interlock circuit to make single supply four-way, dual power supply 4-8 passage, four power supply 4-16 passages.
Described photoelectricity order grid adopts film material (0.18 is thick) through the processing of film printer, and (precision can reach 0.003mm) makes the collection order grid with grating encoder same holes distance;
Described photoelectricity order grid order grid are divided into four (A, B, C, D) regions, and arrangement mode is as follows:
X-direction arranges; The advanced C90 of A
zero , D90 before B ultrasonic
zero ,a and B is reverse, C and D is reverse.
Described housing uses the latten(-tin) of 0.1-0.15mm to process through chemical corrosion method, surface gold-plating or plate false golden anti-oxidant treatment.
The locomotive photoelectric sensor displacement method of reseptance utilizing above-mentioned multichannel light electric displacement receiving array device is the same with embodiment one.
Embodiment three:
A kind of multichannel light electric displacement receiving array device, comprises four parts; Substrate circuit, photoelectric receiving tube, photoelectricity order grid and housing; Photoelectric receiving tube is welded on substrate circuit, and the photoelectric receiving tube that photoelectric receiving tube is encapsulated by paster forms array; Photoelectric receiving tube is covered with photoelectricity order grid, and photoelectricity order grid is wrapped up by fenestrated shell and being solidly installed with substrate circuit.
Described substrate circuit is PID direct inserting device.
Described photoelectric displacement receiving array device is made up of 8 photoelectric receiving tubes, can complete four-way signals collecting and phase differential solidifies, assembling sensor does not need adjustment phase differential to coordinate with interlock circuit to make single supply four-way, dual power supply 4-8 passage, four power supply 4-16 passages.
Described photoelectricity order grid by the thick optical glass of 1mm after overexposure plated film (coating 3-5 micron) through precision optics developing and printing processing, (precision can reach 0.005mm), makes the collection order grid with grating encoder same holes distance;
Described photoelectricity order grid order grid are divided into four (A, B, C, D) regions, have two kinds of arrangement modes:
1) Y-direction arrangement; The advanced B90 of A
zero , the advanced D90 of C
zero ,a and C is reverse, B and D is reverse;
2) X-direction arrangement; The advanced C90 of A
zero , D90 before B ultrasonic
zero ,a and B is reverse, C and D is reverse.
Described housing uses the latten(-tin) of 0.1-0.15mm to process through chemical corrosion method, surface gold-plating or plate false golden anti-oxidant treatment.
The locomotive photoelectric sensor displacement method of reseptance utilizing above-mentioned multichannel light electric displacement receiving array device is the same with embodiment one.
Can be found out by above-described embodiment, the utility model relates to a kind of multichannel light electric displacement receiving array device, and multichannel light electric displacement receiving array device comprises four parts; Substrate circuit, photoelectric receiving tube, photoelectricity order grid and housing; Photoelectric receiving tube is welded on substrate circuit, the photoelectric receiving tube that photoelectric receiving tube is encapsulated by paster; Photoelectric receiving tube is covered with photoelectricity order grid, and photoelectricity order grid is wrapped up by fenestrated shell and being solidly installed with substrate circuit.
Further, described substrate circuit makes PCB circuit substrate by FR4 material or ceramic substrate to form paster or PID direct inserting device.
Further, described photoelectric displacement receiving array device is made up of 4 photoelectric receiving tubes, can complete two channel signal collections and phase differential solidifies, assembling sensor does not need adjustment phase differential to coordinate with interlock circuit can make single supply two passage four-way, dual power supply 2-8 passage.
Further, described photoelectric displacement receiving array device is made up of 8 photoelectric receiving tubes, can complete four-way signals collecting and phase differential solidifies, assembling sensor does not need adjustment phase differential to coordinate with interlock circuit can make single supply four-way, dual power supply 4-8 passage, four power supply 4-16 passages.
Further, described photoelectricity order grid by the thick optical glass of 1mm after overexposure plated film (coating 3-5 micron) through precision optics developing and printing processing, (precision can reach 0.005mm) also can adopt film material (0.18 is thick) to process through film printer; (precision can reach 0.003mm) makes the collection order grid with grating encoder same holes distance;
Further, described photoelectricity order grid order grid are divided into four (A, B, C, D) regions, have two kinds of arrangement modes:
3) Y-direction arrangement; The advanced B90 of A
zero , the advanced D90 of C
zero ,a and C is reverse, B and D is reverse;
4) X-direction arrangement; The advanced C90 of A
zero , D90 before B ultrasonic
zero ,a and B is reverse, C and D is reverse.
Further, described housing uses the latten(-tin) of 0.1-0.15mm to process through chemical corrosion method, surface gold-plating or plate false golden anti-oxidant treatment.
Claims (7)
1. a locomotive photoelectric sensor displacement receiving array device, is characterized in that: locomotive photoelectric sensor displacement receiving array device comprises substrate circuit, photoelectric receiving tube, photoelectricity order grid and housing four parts; Photoelectric receiving tube is welded on substrate circuit, the photoelectric receiving tube that photoelectric receiving tube is encapsulated by paster; Photoelectric receiving tube is covered with photoelectricity order grid, and photoelectricity order grid is wrapped up by fenestrated shell and being solidly installed with substrate circuit.
2. locomotive photoelectric sensor displacement receiving array device as claimed in claim 1, is characterized in that: described substrate circuit is that the square PCB circuit be made up of FR4 material or ceramic substrate forms paster or PID direct inserting device.
3. locomotive photoelectric sensor displacement receiving array device as claimed in claim 1, it is characterized in that: described locomotive photoelectric sensor displacement receiving array device is made up of 4 photoelectric receiving tubes, can complete two channel signal collections and phase differential solidifies, assembling sensor does not need adjustment phase differential to coordinate with interlock circuit can make single supply two passage four-way, dual power supply 2-8 passage.
4. locomotive photoelectric sensor displacement receiving array device as claimed in claim 1, it is characterized in that: described locomotive photoelectric sensor displacement receiving array device is made up of 8 photoelectric receiving tubes, can complete four-way signals collecting and phase differential solidifies, assembling sensor does not need adjustment phase differential to coordinate with interlock circuit can make single supply four-way, dual power supply 4-8 passage, four power supply 4-16 passages.
5. the locomotive photoelectric sensor displacement receiving array device as described in Claims 1-4 any one, it is characterized in that: described photoelectricity order grid is processed through precision optics by the thick optical glass of 1mm and processed after overexposure plated film, or adopts film material to process through film printer; Make the collection order grid with grating encoder same holes distance.
6. locomotive photoelectric sensor displacement receiving array device as claimed in claim 1, is characterized in that: described photoelectricity order grid order grid are divided into A, B, C, D tetra-regions, have two kinds of arrangement modes:
Y-direction arranges: the advanced B90 of A
zero , the advanced D90 of C
zero ,a and C is reverse, B and D is reverse;
X-direction arranges: the advanced C90 of A
zero , D90 before B ultrasonic
zero ,a and B is reverse, C and D is reverse.
7. locomotive photoelectric sensor displacement receiving array device as claimed in claim 1, is characterized in that: described housing uses the latten(-tin) of 0.1-0.15mm to process through chemical corrosion method, surface gold-plating or plate false golden anti-oxidant treatment.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420249520.1U CN204044174U (en) | 2014-05-15 | 2014-05-15 | A kind of locomotive photoelectric sensor displacement receiving array device |
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|---|---|---|---|
| CN201420249520.1U CN204044174U (en) | 2014-05-15 | 2014-05-15 | A kind of locomotive photoelectric sensor displacement receiving array device |
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| CN204044174U true CN204044174U (en) | 2014-12-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109001483A (en) * | 2018-06-01 | 2018-12-14 | 苏州古柏利电子科技有限公司 | A kind of speed probe |
| CN110441782A (en) * | 2019-07-11 | 2019-11-12 | 深圳市深创谷技术服务有限公司 | Infrared detecting device |
-
2014
- 2014-05-15 CN CN201420249520.1U patent/CN204044174U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109001483A (en) * | 2018-06-01 | 2018-12-14 | 苏州古柏利电子科技有限公司 | A kind of speed probe |
| CN110441782A (en) * | 2019-07-11 | 2019-11-12 | 深圳市深创谷技术服务有限公司 | Infrared detecting device |
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