CN204359272U - Based on the optical displacement sensor of CIS - Google Patents
Based on the optical displacement sensor of CIS Download PDFInfo
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- CN204359272U CN204359272U CN201520023510.0U CN201520023510U CN204359272U CN 204359272 U CN204359272 U CN 204359272U CN 201520023510 U CN201520023510 U CN 201520023510U CN 204359272 U CN204359272 U CN 204359272U
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Abstract
The utility model provides a kind of optical displacement sensor based on CIS, comprise outer protection cylinder, sensor core, displacement slide bar, CIS contact-type image sensor, circuit of measurement and control plate and cable, sensor core, CIS contact-type image sensor and circuit of measurement and control plate are all packaged in outer protection cylinder, the mounting groove arranged in sensor core with leave the slit that arranges along sensor core length direction between slideway and mounting groove is communicated by slit with slideway, a part for displacement slide bar is slided in slideway and the other part of displacement slide bar extend out to outside outer protection cylinder from slideway, be arranged at CIS contact-type image sensor in mounting groove receive the reflected light of displacement slide bar by slit and be converted to voltage signal and export circuit of measurement and control plate to and led to outside outer protection cylinder by cable.The optical displacement sensor that the utility model provides is simple for structure, and precision is high, functional reliability and stability high, be suitable for applying of medium and small range displacement monitoring in engineering monitoring.
Description
Technical field
The utility model relates to displacement transducer technology field, particularly a kind of optical displacement sensor based on contact-type image sensor CIS.
Background technology
Displacement transducer is one of important monitoring devices of project security monitoring and engineering automatic monitoring supervisory system in industry and civil engineering structure, it is widely used in the safety and stability of monitoring the engineerings such as hydraulic structure, tunnel, bridge, railway, highway, relates to the displacement of such as geotechnical engineering structure, deformation displacement monitoring and data acquisition etc.The displacement transducer of current widespread use has potentiometric displacement transducer, ultrasonic displacement sensor, magnetostrictive displacement sensor, thread-vibration type device for sensing displacement and optical displacement sensor etc.
Wherein, its ultimate principle of potentiometric displacement transducer mechanical shift is converted to the resistance of linear or certain funtcional relationship with it by potentiometer element or voltage exports, swept resistance formula displacement transducer is a kind of application displacement transducer comparatively early, its ultimate principle is the change change of testee position (distortion) being converted to the resistance value having with it corresponding relation, in fact be exactly utilize a slide rheostat to use as voltage divider, survey calculation change in displacement is carried out with relative voltage, also useful multiturn potentiometer carried out inductive displacement afterwards, i.e. multiturn potentiometer formula displacement transducer, potentiometric displacement transducer structure is simple, output signal is large, easy to use, cheap, but because it exists mechanical contact, such as road in vibration applications environment, in the applied environments such as bridge, Long-term Vibration can cause poor contact of contacts, and potentiometric displacement transducer is difficult to accomplish sealing, limit its application in wet environment.Ultrasonic displacement sensor utilizes ultrasound wave to run into barrier back reflection, the distance between itself and barrier is calculated according to the velocity of sound after receiving reflected impulse, ultrasonic displacement sensor is usually used in object's location detecting system, but its measuring accuracy is not high, error is comparatively large, can not be applied to and require high displacement measurement to measuring accuracy.Magnetostrictive displacement sensor utilizes magnetostriction principle to intersect generation strain-pulse signal by two different magnetic fields to come measuring position exactly, its measuring sensor is a waveguide, and the sensitive element in waveguide is made up of special magnetostriction materials.Magnetostrictive displacement sensor can be applicable in most evil bad industrial environment; be not subject to oil stain, solution, dust or other impact of polluting; and can be applied in high temperature, high pressure and the high environment vibrated; but magnetostrictive displacement sensor is very high to the requirement of power supply; the power supply input that voltage is highly stable must be ensured; otherwise the Output rusults of displacement measurement is abnormal, this makes it be restricted in the application of engineering site.Thread-vibration type device for sensing displacement is the change of measurand is converted to the frequency having with it corresponding relation by the metallic cord strained change as sensitive element, although thread-vibration type device for sensing displacement has simple for structure, reliability and durability feature, but its interference free performance can be caused in vibration environment poor, and this is the unsurmountable shortcoming of vibrating string type sensor (comprising thread-vibration type device for sensing displacement) principle itself.Optical displacement sensor, conventional its ultimate principle of laser light electric-type displacement transducer is by laser directive testee surface by generating laser camera lens, laser through testee reflection is received by receiver camera lens (such as camera lens), the distance between itself and testee is calculated according to angle and the distance between known generating laser camera lens and receiver camera lens, laser displacement sensor can the position of accurate non-cpntact measurement testee, the changes such as displacement, be mainly used in the displacement of inspected object, thickness, vibration, distance, the measurement of the geometric senses such as diameter, but it is suitable only for some specific applications, and due to the high-accuracy lens combination of its laser system demand and complicated signal processing circuit, cause it expensive, be not suitable in engineering site and widely apply.
Utility model content
The utility model is not suitable for the problem applied in the rugged surroundings such as vibration and humidity for existing potentiometric displacement transducer, and ultrasonic displacement sensor, magnetostrictive displacement sensor, thread-vibration type device for sensing displacement and laser light electric-type displacement transducer poor anti jamming capability, low or the expensive problem of precision, a kind of novel CIS optical displacement sensor is provided, have cheap, simple for structure, performance is more reliable and more stable, high resolving power, the advantages such as pin-point accuracy, not only can greatly save sensor cost, and be highly suitable for the application of a large amount of engineering detecting.
The technical solution of the utility model is as follows:
A kind of optical displacement sensor based on CIS, it is characterized in that, comprise outer protection cylinder, sensor core, displacement slide bar, CIS contact-type image sensor, circuit of measurement and control plate and cable, described sensor core, CIS contact-type image sensor and circuit of measurement and control plate are all packaged in outer protection cylinder, the side of described sensor core offers slideway along its length and corresponding opposite side arranges mounting groove along its length, described mounting groove with leave the slit that arranges along sensor core length direction between slideway and mounting groove is communicated by described slit with slideway, a part for described displacement slide bar is slided in described slideway and the other part of displacement slide bar extend out to outside outer protection cylinder from slideway, described CIS contact-type image sensor and circuit of measurement and control plate are interconnected and are all fixedly installed in the mounting groove of sensor core, described CIS contact-type image sensor receives the reflected light of displacement slide bar by slit and is converted to voltage signal and exports circuit of measurement and control plate to, described circuit of measurement and control plate is connected with cable, described cable leads to outside outer protection cylinder.
Described CIS contact-type image sensor comprises linear CMOS image sensor, LED light source and lens, described linear CMOS image sensor is arranged in PCB substrate, described lens receive the reflected light after LED light source irradiation displacement slide bar and convergence images on linear CMOS image sensor, and light signal is converted to voltage signal and exports circuit of measurement and control plate to by described linear CMOS image sensor.
Described circuit of measurement and control plate comprises the high-speed image sampling circuit, microcontroller and the communication interface circuit that connect successively, and described linear CMOS image sensor is connected with microcontroller with high-speed image sampling circuit respectively.
Described slideway is the circular hole be free to slide along sensor core length direction for displacement slide bar, and described mounting groove is groove.
Described circuit of measurement and control plate is also provided with IO interface, and described IO interface is connected with power circuit with communication interface circuit respectively; And/or described high-speed image sampling circuit is high-speed AD acquisition circuit.
Described displacement slide bar is stainless steel, described displacement slide bar arranges register pin in the termination of slipper in slideway, described register pin to penetrate along slit from mounting groove and slides in slit along with the described register pin of slip of displacement slide bar, and the length of described slit is less than the length of mounting groove.
Described LED light source is bar-shaped LED light source array, and described lens are lens pillar arranged in parallel.
The two ends of described outer protection cylinder and sensor core adopt an O RunddichtringO to seal.
Described displacement slide bar extending area and circular hole adopt the 2nd O RunddichtringO to seal.
Described cable adopts water joint to draw.
Technique effect of the present utility model is as follows:
The optical displacement sensor based on CIS that the utility model relates to, comprise outer protection cylinder, sensor core, displacement slide bar, CIS contact-type image sensor, circuit of measurement and control plate and cable, the side of sensor core offers slideway along its length and corresponding opposite side arranges mounting groove along its length, leave between mounting groove with slideway along sensor core length direction arrange slit and mounting groove communicated by described slit with slideway, a part for displacement slide bar is slided in slideway and the other part of displacement slide bar extend out to outside outer protection cylinder from slideway, CIS contact-type image sensor and circuit of measurement and control plate are interconnected and are all fixedly installed in the mounting groove of sensor core, CIS contact-type image sensor receives the reflected light of displacement slide bar and is converted to voltage signal and exports circuit of measurement and control plate to, circuit of measurement and control plate is connected with cable, cable leads to outside outer protection cylinder.The displacement slide bar that this optical displacement sensor based on CIS arranges slideway by the side in sensor core and can move freely along sensor core length direction in slideway, and CIS contact-type image sensor in the mounting groove of the corresponding setting of corresponding opposite side of sensor core and mounting groove and circuit of measurement and control plate, mounting groove is communicated by slit with slideway, therefore therein light source can be irradiated displacement slide bar and the project reflection light image after can receiving light source irradiation displacement slide bar by slit by slit and light signal is converted to voltage signal after photosensitive and exports circuit of measurement and control plate to by CIS contact-type image sensor.When the light source irradiation of CIS contact-type image sensor is on displacement slide bar, the reflected light of displacement slide bar is by the photosensitive absorption of CIS contact-type image sensor, the pixel of CIS contact-type image sensor is caused to be illuminated and to become bright image unit, and there is no the place of displacement slide bar, keep dark pixel state owing to not having reflected light to irradiate, circuit of measurement and control buttress obtains the position of bright-dark cut in image according to the signal received and is the position of displacement slide bar.Owing to adopting CIS contact-type image sensor, in CIS contact-type image sensor normally linear CMOS image sensor as image sensing cell, cheap, image contrast is high, there is the advantage of high resolving power and pin-point accuracy, make the formation of whole optical displacement sensor more succinct and compact conformation, improve functional reliability and the stability of optical displacement sensor, avoid existing laser light electric-type displacement transducer overall price costliness, treatment circuit is complicated, be difficult to the problem realizing a large amount of engineering survey application.Simultaneously of the present utility modelly define based on the CIS contact-type image sensor (or perhaps the linear CMOS image sensor in it) in the optical displacement sensor of CIS and circuit of measurement and control plate the unique texture carrying out the detection of CIS image and make the optical displacement sensor self based on CIS constitute a complete measure-controlling unit, this optical displacement sensor based on CIS is made also to have monitoring function except possessing measurement function, further increase accuracy and the reliability of engineering displacement measurement, be applicable to the application demand of intelligent engineering safety monitoring.The optical displacement sensor based on CIS that the utility model proposes is simple for structure, with low cost, measuring accuracy is high, anti-electromagnetic interference capability is strong, environmental suitability is strong, have high resolving power, precision does not change with the increase of range, is applicable to the widespread use of medium and small range displacement monitoring in engineering site.
Optical displacement sensor based on CIS of the present utility model is stainless steel by arranging displacement slide bar, and the termination of the part of displacement slide bar in the slideway of sensor core arranges register pin, register pin to penetrate along slit from mounting groove and slides at slit along with the slide jaw of displacement slide bar, the sliding scale of register pin is the slit shorter than mounting groove, the register pin arranged has anti-slip function, ensure that displacement slide bar is free to slide and don't as slippage in slideway, to improve the reliability and stability of working sensor further; And; the two ends of outer protection cylinder and sensor core; and displacement slide bar extending area and circular hole (i.e. slideway) all adopt O RunddichtringO encapsulation structure; and cable adopts water joint to draw; the water-tight humidity resistance of further raising optical displacement sensor; form the optical displacement sensor of a complete water-tight, strengthen environmental suitability.
The circuit of measurement and control plate that optical displacement sensor based on CIS of the present utility model is arranged comprises the high-speed image sampling circuit connected successively, microcontroller and communication interface circuit, linear CMOS image sensor scioptics receive LED light source irradiate displacement slide bar after reflected light and be converted to voltage signal and export high-speed image sampling circuit to, generate shadow image after this high-speed image sampling circuit carries out signals collecting and export microcontroller to, microcontroller carries out according to shadow image processing the position coordinates obtaining displacement slide bar, the position coordinates of displacement slide bar can carry out Data Format Transform further and export.This set can the position coordinates of displacement calculating slide bar more accurately, to realize the high-precision requirement of engineering project deformation monitoring further.Communication interface circuit is set and preferably IO interface is set so that this monitoring result based on the optical displacement sensor of CIS is uploaded to host computer machine or other Intelligent data acquisition instrument, and to CIS optical displacement sensor carry out working method configuration and more the initial parameter optimized arrange, or monitoring result is converted to simulating signal so that as the input of follow-up collection in worksite system.
Accompanying drawing explanation
Fig. 1 a is that the utility model is preferably based on the vertical section structure schematic diagram of the optical displacement sensor of CIS; Fig. 1 b and Fig. 1 c is respectively the sectional view of A-A and B-B of Fig. 1 a.
Fig. 2 is the structural representation of the utility model CIS contact-type image sensor.
Fig. 3 is the principle of work structural drawing of the utility model circuit of measurement and control plate.
In figure, each label lists as follows:
1-sensor core; 2-protects cylinder outward; 3-displacement slide bar; 4-CIS contact-type image sensor; 5-circuit of measurement and control plate; 6-cable; 7-the one O RunddichtringO; 8-register pin; 9-the 2nd O RunddichtringO; 10-linear CMOS image sensor; 11-lens; 12-bar-shaped LED light source array; 13-PCB substrate; 14-connecting through hole; 15-glass cover.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described.
The utility model relates to a kind of optical displacement sensor based on CIS, Fig. 1 a is that the utility model is preferably based on the vertical section structure schematic diagram of the optical displacement sensor of CIS, this optical displacement sensor comprises outer protection cylinder 2, sensor core 1, displacement slide bar 3, CIS contact-type image sensor 4, circuit of measurement and control plate 5 and cable 6, sensor core 1, CIS contact-type image sensor 4 and circuit of measurement and control plate 5 are all packaged in outer protection cylinder 2, the side of sensor core 1 offers slideway along its length and corresponding opposite side arranges mounting groove along its length, leave between this mounting groove with slideway along sensor core 1 length direction arrange slit and mounting groove communicated by this slit with slideway, a part for displacement slide bar 3 is slided in this slideway and the other part of displacement slide bar 3 extend out to outside outer protection cylinder 2 from slideway, CIS contact-type image sensor 4 and circuit of measurement and control plate 5 are interconnected and are all fixedly installed in the mounting groove of sensor core 1, CIS contact-type image sensor 4 receives the reflected light of displacement slide bar 3 by slit and is converted to voltage signal and exports circuit of measurement and control plate 5 to, circuit of measurement and control plate 5 is connected with cable 6, cable 6 leads to outside outer protection cylinder 2.The displacement slide bar 3 that this optical displacement sensor based on CIS arranges slideway by the side in sensor core 1 and can move freely along sensor core 1 length direction in slideway, and the CIS contact-type image sensor 4 arranged in the mounting groove and mounting groove of the corresponding setting of corresponding opposite side of sensor core 1 and circuit of measurement and control plate 5, and arrange mounting groove to be communicated by slit with slideway, this vibrational power flow makes CIS contact-type image sensor 4 therein light source can be irradiated displacement slide bar 3 by slit, and the project reflection light image after light source irradiation displacement slide bar 3 can be received by slit, and light signal is converted to voltage signal after photosensitive and exports circuit of measurement and control plate 5 to.When the light source irradiation of CIS contact-type image sensor 4 is on displacement slide bar 3, the reflected light of displacement slide bar 3 is by the photosensitive absorption of CIS contact-type image sensor 4, the pixel of CIS contact-type image sensor 4 is caused to be illuminated and to become bright image unit, and there is no the place of displacement slide bar 3, dark pixel state is kept owing to not having reflected light to irradiate, circuit of measurement and control plate 5 is the position of displacement slide bar 3 according to the position that the signal received obtains bright-dark cut in image (i.e. the separatrix of the first and dark pixel of bright image), thus accurately can draw the numerical value of monitoring result.In addition; circuit of measurement and control plate 5 is connected with cable 6; monitoring result numerical value can lead to outside outer protection cylinder 2 by cable 6, the monitoring result of circuit of measurement and control plate 5 Real-time Collection and storage is numerically reached host computer (i.e. monitoring center) and further stores and process.The optical displacement sensor based on CIS that the utility model proposes, circuit and simple for structure, with low cost, anti-electromagnetic interference capability is strong, and have that measuring accuracy is high, accuracy is high, precision does not change with the increase of range, water-tight is moistureproof, the advantage of anti-adverse environment, functional reliability and security high, be highly suitable for engineering project deformation or the displacement monitoring of the medium and small range of engineering site, and be very suitable for the intelligent requirements that engineering survey of new generation and engineering safety detect.
Fig. 1 b and Fig. 1 c is respectively Fig. 1 a the utility model preferably based on the sectional view of A-A and B-B of the vertical section structure schematic diagram of the optical displacement sensor of CIS, as shown in Figure 1 b, preferably, displacement slide bar 3 can be preferably the stainless steel of any surface finish, reliable and stable during to ensure that displacement slide bar 3 slides in slideway; The termination of displacement slide bar 3 slipper in slideway can arrange register pin 8, when installation is arranged, register pin 8 can penetrate along slit from mounting groove, and along with the slide jaw 8 of displacement slide bar 3 is slided in slit, the length arranging slit is less than the length of mounting groove, therefore the sliding scale of register pin 8 is the slit shorter than mounting groove, register pin 8 has anti-slip function, can ensure that displacement slide bar 3 is free to slide and don't as slippage in slideway, to improve the reliability and stability of working sensor further; As shown in Fig. 1 b or Fig. 1 c, slideway preferably can for the circular hole be free to slide along sensor core 1 length direction for displacement slide bar 3, mounting groove can be preferably groove, as shown in Figure 1a, displacement slide bar 3 extending area and circular hole can adopt two-layer 2nd O RunddichtringO 9 to seal, and outer protection cylinder 2 can adopt a two-layer O RunddichtringO 7 to seal with the two ends of sensor core 1, forms the optical displacement sensor structure of a complete water-tight; In addition, cable 6 preferably can adopt water joint to draw (Fig. 1 a, Fig. 1 b and Fig. 1 c in not shown), to realize water-tight process and physical protection, improves the water-tight humidity resistance of optical displacement sensor further.
The CIS contact-type image sensor 4 of the optical displacement sensor based on CIS that the utility model proposes is for self providing the device of light source and reception displacement slide bar 3 reflected light photosensitive imaging, adoptable preferred structure as shown in Figure 2, comprise linear CMOS image sensor 10, LED light source (preferred bar-shaped LED light source array 12) and lens 11, linear CMOS image sensor 10 is arranged in PCB substrate 13, and PCB substrate 13 realizes the connection with circuit of measurement and control plate 5 by connecting through hole 14; Reflected light is formed after LED light source (i.e. bar-shaped LED light source array 12) irradiates displacement slide bar 3 through glass cover 15, this reflected light is for diffusing, this diffuses to be received by lens 11 through glass cover 15 and pool picture and exports directional light, transfer to linear CMOS image sensor 10 to be again converted to voltage signal and to export circuit of measurement and control plate 5 to, wherein, the lens pillar of lens 11 preferred parallel arrangement, can be fixedly installed on lens band.The utility model adopts linear CMOS image sensor 10 as image sensitive unit, cheap, be easy to integrated, image contrast is high, resolution is high, make the structure of the structure of CIS contact-type image sensor 4 and even whole optical displacement sensor compacter, improve functional reliability and the stability of optical displacement sensor, avoid that existing laser light electric-type displacement transducer overall price is expensive, treatment circuit is complicated, be difficult to realize the problem of a large amount of engineering survey application simultaneously.
Fig. 3 is the principle of work structural drawing of the utility model circuit of measurement and control plate, as shown in Figure 3, the circuit of measurement and control plate 5 of the optical displacement sensor based on CIS that the utility model proposes comprises the high-speed image sampling circuit connected successively, microcontroller and communication interface circuit, wherein, linear CMOS image sensor 10 is connected with microcontroller with high-speed image sampling circuit respectively, linear CMOS image sensor 10 receives the reflected light after LED light source (preferred bar-shaped LED light source array 12) irradiation displacement slide bar 3, and be converted to voltage signal and export high-speed image sampling circuit to, microcontroller is connected with communication interface circuit with linear CMOS image sensor 10, high-speed image sampling circuit respectively, controls and process to realize the collection of monitor signal, conversion, transmission and storage etc.Preferably, high-speed image sampling circuit adopts high-speed AD acquisition circuit, high-speed AD acquisition circuit and microcontroller is welded on circuit of measurement and control plate 5, communication interface circuit is connected with microcontroller with process such as control realization Data Format Transform, circuit of measurement and control plate 5 can also be provided with IO interface, IO interface is connected with power circuit with communication interface circuit respectively, power circuit configuration power supply module powers to whole optical displacement sensor, IO interface can be digital communication interface and/or modulating output interface, digital communication interface can adopt RS-485 interface, data communication can be carried out with host computer (i.e. monitoring center), circuit of measurement and control plate 5 Real-time Collection of this optical displacement sensor and the monitoring result of storage are uploaded to host computer (i.e. monitoring center), and to the initial parameter setting that this optical displacement sensor carries out working method configuration and more optimizes, modulating output interface is set by data with analog signal output, using the input as follow-up collection in worksite system, or, so that engineering site is with various working method composition automatic monitoring system.
The principle of work of the utility model circuit of measurement and control plate 5 is as shown in Figure 3 as follows: after the reflected light after linear CMOS image sensor 10 receives LED light source (preferred bar-shaped LED light source array 12) irradiation displacement slide bar 3, the photosensitive generation optical imagery of microprocessor controls drive wire array CMOS image sensor 10, and the pixel voltage signal being converted to reflection brightness exports high-speed AD acquisition circuit to, the pixel voltage signal of reception carries out quantizing processing and generating shadow image (i.e. the first image formed with dark pixel of bright image) and exports microcontroller to by high-speed AD acquisition circuit, microcontroller carries out scanning analysis calculating according to this shadow image through certain Shadow recognition method, the Shadow recognition method adopted is the position according to bright-dark cut in bright image unit in scan image and dark Pixel Analysis recognition image, and then calculate the displacement information of displacement slide bar 3, and carry out the process such as Data Format Transform by communication interface circuit, the displacement information of displacement slide bar 3 is exported to host computer (i.e. monitoring center) or Intelligent data acquisition instrument again by IO interface.Special instruction, circuit of measurement and control plate 5 directly can buy existing IC Hardware equipment, without the need to arranging software program again, directly can carry out simple data processing and the displacement information of output displacement slide bar 3.As shown in Figure 1a, because the utility model sensor core 1 has the displacement slide bar 3 of movement along its length and the CIS contact-type image sensor 4 of setting corresponding with displacement slide bar 3, and circuit of measurement and control plate 5, when displacement slide bar 3 is moved along sensor core 1 length direction, the position coordinates of displacement slide bar 3 can be obtained, this position coordinates is relative coordinate, the measurement result of this measurement result and this optical displacement sensor previous is carried out computing, the change in displacement of displacement slide bar 3 can be obtained, and then realize engineering survey or project security monitoring.The optical displacement sensor based on CIS that the utility model proposes, has the advantage of high precision and pin-point accuracy, functional reliability and stability high, be applicable to engineering project deformation or the displacement monitoring of medium and small range.
More preferably, circuit of measurement and control plate 5 can also comprise clock circuit, data-carrier store and one or more in real time in the assembly such as display device, real time clock circuit, data-carrier store are connected with microcontroller respectively with real-time display device simultaneously, make control circuit board have the functions such as the calculating of image data, storage, display translation and communication.High-speed image sampling circuit (i.e. high-speed AD acquisition circuit), display, real time clock circuit, data-carrier store and real-time display device are the peripheral circuit of microcontroller, control drive wire array CMOS image sensor by microcontroller and peripheral circuit thereof, carry out high-speed AD image real-time acquisition and read shadow image, and according to the real-time display translation result of location coordinate information of shadow image analytical calculation displacement slide bar, there is engineering site Real-time Collection, monitoring and Presentation Function, and automatically can record Monitoring Data by pre-configured working method.Real time clock circuit and data-carrier store can weld and be arranged on circuit of measurement and control plate 5, and real time clock circuit and data-carrier store can carry out real-time collection and storage to the data that microcontroller exports.
It should be pointed out that the above embodiment can make the invention of those skilled in the art's comprehend, but do not limit the present invention in any way creation.Therefore; although this instructions has been described in detail the invention with reference to drawings and Examples; but; those skilled in the art are to be understood that; still can modify to the invention or equivalent replacement; in a word, all do not depart from technical scheme and the improvement thereof of the spirit and scope of the invention, and it all should be encompassed in the middle of the protection domain of the invention patent.
Claims (10)
1. the optical displacement sensor based on CIS, it is characterized in that, comprise outer protection cylinder, sensor core, displacement slide bar, CIS contact-type image sensor, circuit of measurement and control plate and cable, described sensor core, CIS contact-type image sensor and circuit of measurement and control plate are all packaged in outer protection cylinder, the side of described sensor core offers slideway along its length and corresponding opposite side arranges mounting groove along its length, described mounting groove with leave the slit that arranges along sensor core length direction between slideway and mounting groove is communicated by described slit with slideway, a part for described displacement slide bar is slided in described slideway and the other part of displacement slide bar extend out to outside outer protection cylinder from slideway, described CIS contact-type image sensor and circuit of measurement and control plate are interconnected and are all fixedly installed in the mounting groove of sensor core, described CIS contact-type image sensor receives the reflected light of displacement slide bar by slit and is converted to voltage signal and exports circuit of measurement and control plate to, described circuit of measurement and control plate is connected with cable, described cable leads to outside outer protection cylinder.
2. optical displacement sensor according to claim 1, it is characterized in that, described CIS contact-type image sensor comprises linear CMOS image sensor, LED light source and lens, described linear CMOS image sensor is arranged in PCB substrate, described lens receive the reflected light after LED light source irradiation displacement slide bar and convergence images on linear CMOS image sensor, and light signal is converted to voltage signal and exports circuit of measurement and control plate to by described linear CMOS image sensor.
3. optical displacement sensor according to claim 2, it is characterized in that, described circuit of measurement and control plate comprises the high-speed image sampling circuit, microcontroller and the communication interface circuit that connect successively, and described linear CMOS image sensor is connected with microcontroller with high-speed image sampling circuit respectively.
4. according to the optical displacement sensor one of claims 1 to 3 Suo Shu, it is characterized in that, described slideway is the circular hole be free to slide along sensor core length direction for displacement slide bar, and described mounting groove is groove.
5. optical displacement sensor according to claim 3, is characterized in that, described circuit of measurement and control plate is also provided with IO interface, and described IO interface is connected with power circuit with communication interface circuit respectively; And/or described high-speed image sampling circuit is high-speed AD acquisition circuit.
6. according to the optical displacement sensor one of claims 1 to 3 Suo Shu, it is characterized in that, described displacement slide bar is stainless steel, described displacement slide bar arranges register pin in the termination of slipper in slideway, described register pin to penetrate along slit from mounting groove and slides in slit along with the described register pin of slip of displacement slide bar, and the length of described slit is less than the length of mounting groove.
7. optical displacement sensor according to claim 2, is characterized in that, described LED light source is bar-shaped LED light source array, and described lens are lens pillar arranged in parallel.
8. optical displacement sensor according to claim 4, is characterized in that, the two ends of described outer protection cylinder and sensor core adopt an O RunddichtringO to seal.
9. optical displacement sensor according to claim 4, is characterized in that, described displacement slide bar extending area and circular hole adopt the 2nd O RunddichtringO to seal.
10. according to the optical displacement sensor one of claims 1 to 3 Suo Shu, it is characterized in that, described cable adopts water joint to draw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520023510.0U CN204359272U (en) | 2015-01-13 | 2015-01-13 | Based on the optical displacement sensor of CIS |
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| CN201520023510.0U CN204359272U (en) | 2015-01-13 | 2015-01-13 | Based on the optical displacement sensor of CIS |
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| CN204359272U true CN204359272U (en) | 2015-05-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104567694A (en) * | 2015-01-13 | 2015-04-29 | 基康仪器股份有限公司 | CIS-based photoelectric displacement sensor |
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- 2015-01-13 CN CN201520023510.0U patent/CN204359272U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104567694A (en) * | 2015-01-13 | 2015-04-29 | 基康仪器股份有限公司 | CIS-based photoelectric displacement sensor |
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