CN204807044U - Great -scale displacement sensor - Google Patents
Great -scale displacement sensor Download PDFInfo
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- CN204807044U CN204807044U CN201520558990.0U CN201520558990U CN204807044U CN 204807044 U CN204807044 U CN 204807044U CN 201520558990 U CN201520558990 U CN 201520558990U CN 204807044 U CN204807044 U CN 204807044U
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- housing
- detection window
- displacement transducer
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- lens subassembly
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Abstract
The utility model relates to a great -scale displacement sensor, including the inside casing that is provided with the cavity to and set up at the inside optical components of casing, luminous component, optical sensation ware, and optical sensation ware support circuit, optical components includes the lens subassembly, and the lens subassembly is used for removing the form images image response mouthful of optical sensation ware of object surface, offered detection window on the casing, the income light side of prism subassembly sets up the luminous component, and the light -emitting side is slope setting with the detection window plane, and the lens subassembly setting is in one side of prism subassembly to parallel with the detection window plane, the light -emitting side of lens subassembly sets up the optical sensation ware, the optical sensation ware includes image formation by rays measuring unit and DSP the control unit, and image formation by rays measuring unit's output is in proper order through logical interface unit and communication unit output measured data, image formation by rays measuring unit be used for according to the light of collecting generate the survey map like, the survey map that DSP the control unit is used for contrasting the adjacent moment is like obtaining measured data.
Description
Technical field
The utility model relates to measurement sensor, is specially a kind of displacement transducer.
Background technology
Displacement transducer is sensor conventional in measuring, general employing slide rheostat principle.Therefore this sensor usually has following problem in using: use procedure sealing is easily aging, and brush loose contact, brings damage; Power supply capacity hour analog output error is large; The precision of the load variable effect measurement processing of measuring circuit; During due to employing analog output, the stability of power supply is very large on the impact of measuring, and needs the reference voltage adopting stability high; Installation process requires that centering is high, otherwise brings comparatively big error, easily damages displacement transducer simultaneously.
Utility model content
For problems of the prior art, the utility model provides a kind of structure simple, and signal stabilization, measuring accuracy is high, is quick on the draw, and outputs signal the displacement transducer into digital signal.
The utility model is achieved through the following technical solutions:
A kind of displacement transducer, comprises the housing that inside is provided with cavity, and is arranged on the optical module of enclosure interior, luminous component, optical sensor, and optical sensor support circuit; Optical module comprises lens subassembly, and lens subassembly is used for image sensing mouth mobile object surface being imaged onto optical sensor; Housing offers detection window, the incident side of prism assemblies arranges luminous component, and light emission side and detection window plane are inclined to set, and lens subassembly is arranged on the side of prism assemblies, and parallel with detection window plane, the light emission side of lens subassembly arranges optical sensor; Optical sensor comprises image formation by rays measuring unit and DSP control module, and the output terminal of image formation by rays measuring unit exports measurement data through Logic Interface Unit and communication unit successively; Image formation by rays measuring unit is used for generating measurement image according to the light collected, and DSP control module obtains measurement data for the measurement image contrasting adjacent moment.
Preferably, communication unit is provided with USB and/or PS2 interface and/or wave point.
Preferably, it is the measurement slide bar of integral hermetic that the side that housing is provided with detection window is connected with housing, and measure the direction of motion of slide bar and the ray intersection of prism assemblies light emission side, one end of measurement slide bar is connected with testee.
Preferably, outside arranges the holddown spring that the side for making housing is arranged detection window contacts with the laminating of testee surface; The free end of holddown spring is fixed on mounting bracket.
Preferably, also comprise the outer cover arranged in sealing, outer cover inner rotation is provided with swiveling wheel; The rotating shaft of swiveling wheel is stretched out outer cover and is connected with testee; Housing is arranged on outer cover inside, and housing arranges the tangential setting of side along swiveling wheel of detection window, and detection window is arranged towards the rotating shaft of swiveling wheel.
Preferably, luminous component adopts visible ray illuminating part, infrared light illuminating part or lasing fluorescence part.
Preferably, optical module also comprises for the prism assemblies as passage of light; Prism assemblies is used for the light sent by luminous component, is transmitted to the surface of testee after prism assemblies transmission.
Preferably, DSP control module is also for controlling the time interval of synthetic image.
Compared with prior art, the utility model has following useful technique effect:
The utility model is by the luminous component arranged and the optical module transmitting light, collect, utilize spontaneous light and collect mobile realize of reflection ray to testee and measure, the image formation by rays measuring unit in optical sensor and DSP control chip is utilized to be analyzed the image collected, thus obtain the displacement information of testee, realize the measurement to displacement and sensing, can directly measure testee; Can with measured object without being fixedly connected with, self does not have moving component, is convenient to install, and use procedure fault is few, and the life-span is long; Do not limit by size sensor during measurement, measurement can reach no maximum scope, applied widely, and structure is simple, and detect stable, identity is high, with low cost, is quick on the draw, and can improve precision and efficiency of detecting; Measurement result directly exports with digital signal, can adapt to multiple interfaces type, meets the needs of digital intelligent test.
Further, by arranging the slide bar with sensor integral packaging, measured object Sports band moving slide-bar can be made to move, and the displacement of slide bar, by sensor measurement record, makes its fixation measuring more accurate.More high precision can be met, tester motion stabilization, the testing requirement of displacement in certain limited field of measurement.
Further, by the setting of holddown spring, when can ensure that spacing between sensor and measured object is constant, the effective damage reduced because mobile object brings sensor in the swing perpendicular to direction of motion, can increase the life-span of sensor greatly.
Further, by the setting of circular arc outer cover, what can ensure housing and cylindric measured object is well connected and measuring distance stable, improves measuring accuracy and dependability.
Accompanying drawing explanation
Fig. 1 is the structural representation of displacement transducer described in the utility model example.
The irradiation light-path schematic diagram that Fig. 2 is displacement transducer described in the utility model example.
Fig. 3 is testee imaging path schematic diagram when displacement transducer described in the utility model example uses.
Fig. 4 is the circuit structure block diagram of displacement transducer described in the utility model example.
The circuit structure principle connection layout that Fig. 5 is displacement transducer described in the utility model example.
Fig. 6 carries out the structural representation of straight-line displacement measurement for displacement transducer described in the utility model example.
Fig. 7 carries out the structural representation of planar displacement measurement for displacement transducer described in the utility model example.
Fig. 8 carries out the structural representation of angle displacement measurement for displacement transducer described in the utility model example.
Fig. 9 is provided with the structural representation of slide bar for displacement transducer described in the utility model example.
Figure 10 is provided with the structural representation of outer cover for displacement transducer described in the utility model example.
In figure: housing 1, optical sensor 2, optical sensor support circuit 3, prism assemblies 4, lens subassembly 5, LED6, cable 7, measures slide bar 8, holddown spring 9, mounting bracket 10, outer cover 11, swiveling wheel 12.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, described in be to explanation of the present utility model instead of restriction.
The utility model, as shown in fig. 1, it comprises the housing 1 that inside is provided with cavity, and is arranged on the optical module of housing 1 inside, luminous component, optical sensor 2, and optical sensor support circuit 3; Shell 1 is all devices of fixing internal, and adopt high-abrasive material to ensure the spacing on optical system and measured object surface is preserved fixing in bottom, metal shield materials can be adopted suitably to reduce interference in the place that electromagnetic environment is poor.Adopt LED6 as luminous component in this preferred embodiment, optical path and other electron devices.Optical sensor 2 receives from the imaging of measured object reflection ray and is transferred to communication unit transmission after comparing calculation displacement information.The optical transport that LED6 occurs is irradiated to measured object surface by the prism assemblies 4 that optical module comprises.What optical module comprised 5 is that lens subassembly is by the image-receptive region of the image formation by rays of testee surface reflection to optical mouse chip.LED6 produces the light that optical sensor 2 can receive use, preferred employing common light, infrared light or laser.Cable 7 can use as the cable of signal and/or power supply.
The utility model can be applicable to different precision, different velocity of displacements, different testees surface, and can communicate with computing machine easily.As shown in Figure 1, Figure 2 and Figure 3, tested moving object is the more smooth plane motion object in a surface, is the displacement parameter main body that will observe; The displacement movement direction of moving direction measured by displacement transducer; Sensor outer housing 1 is body sensor internal components and parts being provided to protection and support, can be designed to high-abrasive material as required by with measured object contact point, ensures the gap between measured object; Optical sensor support circuit 3 adopts circuit board mode to arrange, and provides the fixing of electronic devices and components and circuit substrate; LED6 sends the measurement institute light requirement of applicable intensity; Prism assemblies 4 is that the light sent from LED conduction is irradiated to measured object surface, if led directly projects measured object surface, can save these parts; The micro image on measured object surface is imaged onto the image receiving portion of optical sensor by lens subassembly 5; Optical sensor 2 comprises image formation by rays measuring unit, image formation by rays measuring unit is used for generating measurement image according to the light collected, by the image of image acceptance place of chip according to the change in displacement of being undertaken by DSP control module setting-up time interval between unique point that image ratio comparatively calculates between consecutive image, then the delta data of different directions is transferred to communication unit by transmission logic interface.Displacement is directly transferred out displacement transducer according to the interface designed by communication unit.
As shown in Figure 6, LED6 sends the light source needing type to image-forming principle, is irradiated to article for rotation surface after the catadioptric of light by a prism assemblies 4, and point of irradiation is right against the detection window position of optical sensor 2; Prism assemblies 4 its can utilize optical glass or optical resin manufacture, also can save, directly be irradiated without prism assemblies 4 by LED6.As light carries out reflecting the imaging hole entering image formation by rays measuring unit through lens subassembly 5 by Fig. 3 mobile object, obtain the microcosmic imaging on mobile object surface at image formation by rays measuring unit.As shown in Figure 4 and Figure 5, obtain a time point by DPS control module and absorb a micro image, second micro image is recorded again after setting-up time, two micro images are compared by DSP unit, draw and spread out of the displacement that image occurs this result through Logic Interface Unit and communication unit.
With this principle, the utility model displacement transducer as in-plane displancement sensor, can be measured and obtains the displacement parameter of mobile object two vertical direction easily.Use as shown in Figure 7, at the holddown spring 9 that housing 1 outer setting contacts with the laminating of testee surface for making side housing 1 being arranged detection window; The free end of holddown spring 9 is fixed on mounting bracket 10.The compression of displacement transducer described in the utility model and testee direction of motion can be ensured, ensure the precision measured.
The utility model displacement transducer can also be used for the body surface rotated, and as shown in Figure 8, namely can measure the angular displacement of this rotating object, in this preferred embodiment, as shown in Figure 10, by the outer cover 11 arranged in sealing, outer cover 11 inner rotation is provided with swiveling wheel 12; The rotating shaft of swiveling wheel 12 is stretched out outer cover 11 and is connected with testee; It is inner that housing 1 is arranged on outer cover 11, and housing 1 arranges the tangential setting of side along swiveling wheel 12 of detection window, and detection window is arranged towards the rotating shaft of swiveling wheel 12; Thus the High-Accuracy Angular Displacement Measurement that can realize without dead angle.
The utility model displacement transducer, it can also be sealed with a slide bar, as shown in Figure 9, the side that housing 1 is provided with detection window is connected with and the measurement slide bar 8 of housing 1 in integral hermetic, measure the direction of motion of slide bar 8 and the ray intersection of prism assemblies 4 light emission side, the one end measuring slide bar 8 is connected with testee.Thus the linear movement measuring of high-precision limited range can be met.
The measurement of the utility model by adopting same structure can meet displacement of the lines, plane (two dimension) displacement, angular displacement.During practical application, in the data transmission procedure in cable 7, can Incremental data transmit be adopted, the requirement of data transmission to communication speed can be greatly reduced.The measurement needs that wireless communications component (as bluetooth communication) can meet wireless connections are added according to powered battery.
Claims (8)
1. a displacement transducer, is characterized in that, comprises the housing (1) that inside is provided with cavity, and be arranged on the inner optical module of housing (1), luminous component, optical sensor (2), and optical sensor support circuit (3);
Described optical module comprises lens subassembly (5), and lens subassembly (5) is for being imaged onto the image sensing mouth of optical sensor by mobile object surface;
Described housing (1) offers detection window, the incident side of prism assemblies (4) arranges luminous component, light emission side and detection window plane are inclined to set, lens subassembly (5) is arranged on the side of prism assemblies (4), and parallel with detection window plane, the light emission side of lens subassembly (5) arranges optical sensor (2);
Described optical sensor (2) comprises image formation by rays measuring unit and DSP control module, and the output terminal of image formation by rays measuring unit exports measurement data through Logic Interface Unit and communication unit successively; Image formation by rays measuring unit is used for generating measurement image according to the light collected, and DSP control module obtains measurement data for the measurement image contrasting adjacent moment.
2. a kind of displacement transducer according to claim 1, is characterized in that, communication unit is provided with USB and/or PS2 interface and/or wave point.
3. a kind of displacement transducer according to claim 1, it is characterized in that, the side that housing (1) is provided with detection window is connected with the measurement slide bar (8) with housing (1) in integral hermetic, measure the direction of motion of slide bar (8) and the ray intersection of prism assemblies (4) light emission side, the one end measuring slide bar (8) is connected with testee.
4. a kind of displacement transducer according to claim 1, is characterized in that, the holddown spring (9) that the side that housing (1) outer setting is used for making housing (1) to be arranged detection window contacts with the laminating of testee surface; The free end of holddown spring (9) is fixed on mounting bracket (10).
5. a kind of displacement transducer according to claim 1, is characterized in that, also comprise the outer cover (11) arranged in sealing, outer cover (11) inner rotation is provided with swiveling wheel (12); The rotating shaft of swiveling wheel (12) is stretched out outer cover (11) and is connected with testee; It is inner that housing (1) is arranged on outer cover (11), and housing (1) arranges the tangential setting of side along swiveling wheel (12) of detection window, and detection window is arranged towards the rotating shaft of swiveling wheel (12).
6. a kind of displacement transducer according to claim 1, is characterized in that, luminous component adopts visible ray illuminating part, infrared light illuminating part or lasing fluorescence part.
7. a kind of displacement transducer according to claim 1, is characterized in that, described optical module also comprises for the prism assemblies (4) as passage of light; Prism assemblies (4) light for being sent by luminous component, is transmitted to the surface of testee after prism assemblies (4) transmits.
8. a kind of displacement transducer according to claim 1, is characterized in that, described DSP control module is also for controlling the time interval of synthetic image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520558990.0U CN204807044U (en) | 2015-07-29 | 2015-07-29 | Great -scale displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520558990.0U CN204807044U (en) | 2015-07-29 | 2015-07-29 | Great -scale displacement sensor |
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| CN204807044U true CN204807044U (en) | 2015-11-25 |
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| CN201520558990.0U Active CN204807044U (en) | 2015-07-29 | 2015-07-29 | Great -scale displacement sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507469A (en) * | 2018-05-28 | 2018-09-07 | 上海岭先机器人科技股份有限公司 | Slip detection device and its detection method |
| CN113945843A (en) * | 2020-07-17 | 2022-01-18 | 深圳绿米联创科技有限公司 | Method for detecting slippage of curtain motor, curtain motor and curtain |
-
2015
- 2015-07-29 CN CN201520558990.0U patent/CN204807044U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507469A (en) * | 2018-05-28 | 2018-09-07 | 上海岭先机器人科技股份有限公司 | Slip detection device and its detection method |
| CN113945843A (en) * | 2020-07-17 | 2022-01-18 | 深圳绿米联创科技有限公司 | Method for detecting slippage of curtain motor, curtain motor and curtain |
| CN113945843B (en) * | 2020-07-17 | 2024-05-31 | 深圳绿米联创科技有限公司 | Method for detecting slip of curtain motor, curtain motor and curtain |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210820 Address after: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee after: XI'AN HIGH VOLTAGE APPARATUS RESEARCH INSTITUTE Co.,Ltd. Address before: 710075 Shaanxi city of Xi'an Province Tang Hing Road No. 7 Patentee before: CHINA XD ELECTRIC Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee after: Xi'an High Voltage Electrical Apparatus Research Institute Co.,Ltd. Address before: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee before: XI'AN HIGH VOLTAGE APPARATUS RESEARCH INSTITUTE Co.,Ltd. |