CN104567741A - Novel angle displacement measuring device and measuring method thereof - Google Patents
Novel angle displacement measuring device and measuring method thereof Download PDFInfo
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- CN104567741A CN104567741A CN201510007786.4A CN201510007786A CN104567741A CN 104567741 A CN104567741 A CN 104567741A CN 201510007786 A CN201510007786 A CN 201510007786A CN 104567741 A CN104567741 A CN 104567741A
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- 238000006243 chemical reaction Methods 0.000 claims description 8
- 230000005693 optoelectronics Effects 0.000 claims description 8
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- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000005259 measurement Methods 0.000 abstract description 5
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Abstract
The invention discloses a novel angle displacement measuring device, and belongs to the field of measuring devices. The device comprises a revolving shaft. A laser light source is arranged on the revolving shaft. A light chopper is rolled in the shape of a ring and is arranged on the periphery of the revolving shaft. An area array photosensitive device set is arranged on the outer side of the light chopper, and a data processing module is connected with the area array photosensitive device set. The invention further discloses a measurement method of the device. When the device works, a laser light curtain revolves with the revolving shaft, and passes through the light chopper form light spots on the area array photosensitive device set. The positions of the light spots are fed back to the data processing module through the area array photosensitive devices. An absolute revolving position of a current measured shaft is calculated according to the revolving angle corresponding to height position of the helical line of the light chopper, therefore the technical problem that an encoder photoelectric coded disc in the prior art is limited. Compared with a traditional correlation measurement device, the manufacturing difficulty is lowered, the production cycle is shortened, and the production cost is reduced.
Description
Technical field
The present invention relates to measurement mechanism, relate to a kind of novel displacement measuring device and measuring method thereof particularly.
Background technology
Displacement transducer to be gathered around as lathe, robot, production line, elevator etc. at industrial circle and is widely used, the service precision of these machine tools depends on the precision of displacement transducer to a great extent, and displacement transducer widely uses the most with scrambler, can measured angular displacement or straight-line displacement.Scrambler most is at present the device of core with photoelectric code disk based on grating process, and the dividing precision of photoelectric code disk determines the service precision of scrambler, and the precision of photoelectric code disk is higher, and its difficulty of processing is also higher, and the process-cycle is longer, and cost of manufacture is huge.
Summary of the invention
The object of the present invention is to provide a kind of novel displacement measuring device to solve the technical matters of prior art scrambler measuring accuracy by photoelectric code disk limitation.
In order to achieve the above object, the present invention adopts following technical scheme:
A kind of Novel angle displacement measuring device, comprise rotating shaft, LASER Light Source, dimmer, face battle array sensor devices group and data processing module, this rotating shaft is provided with LASER Light Source, described dimmer ring-type parcel is installed on around described rotating shaft, this dimmer is the right cylinder device of middle part hollow out, described periphery has the gap of a zigzag shape, and described battle array sensor devices group is arranged at outside described dimmer, and described data processing module is connected with described battle array sensor devices group; LASER Light Source is arranged in rotating shaft, laser light curtain rotates with rotating shaft, light curtain forms hot spot through dimmer in the battle array sensor devices group of face, the position of hot spot feeds back to data processing module by face battle array sensor devices, and the anglec of rotation corresponding according to the height and position (i.e. the axial address of face, hot spot place array element) of dimmer helix calculates the absolute rotational position of current measured axis.
One as the technical program is improved, and the rotation length of described helix is more than 360.
Another kind as the technical program improves, described battle array sensor devices group is made up of the light-sensitive array element being not less than three quantity, also can be the closed integrated photo-sensitive cell of ring-type of customization, during installation, the photosensitive region of photo-sensitive cell is spatially closed into annular configuration outside dimmer, and face battle array light activated element can be face battle array CMOS, ccd image sensor etc. by the sensor devices of the integrated face battle array of photosensitive unit.
As another improvement of the technical program, described data processing module is used for this face battle array sensor devices group output signal is carried out to estimation & disposing, calculated the positional information of current measured axis and export.
Meanwhile, present invention also offers the measuring method of this Novel angle displacement measuring device, specifically comprise the following steps:
S1, be connected with measured axis by the rotating shaft of shaft coupling by this device, rotating shaft and measured axis do synchronous rotary and move, LASER Light Source energising simultaneously, and laser light curtain is with rotating shaft synchronous rotary;
Laser light curtain in S2, step S1 forms the hot spot of movement in the battle array sensor devices group of face through dimmer, the photosensitive unit of light produces electric signal, and by this Signal transmissions in step S3;
S3, data processing module carry out judgement screening to the electric signal that step S2 produces, and filter out the most sufficient electric signal of opto-electronic conversion, and produce the address information of the most sufficient electric signal of this opto-electronic conversion;
S4, data processing module carry out calculation process to the address information that step S3 produces, and draw the spin angular position of measured axis;
S5, the spin angular position information of measured axis drawn by step S4 export.
Wherein, the arithmetic processing method in described step S4 is specifically made up of following formula:
The reference position of the helix on definition dimmer is 0
Wherein:
for the angle of measured axis;
A is the photosensitive unit line number of face battle array light activated element sensitive volume;
I is the particular row numerical value in the battle array light activated element of face, opto-electronic conversion the most sufficient electric signal row address place.
In a word, the present invention and prior art ratio, its beneficial effect is:
The present invention is with rotating shaft, LASER Light Source, dimmer, face battle array sensor devices group and data processing module form a novel displacement measuring device, during the work of this device, laser light curtain rotates with rotating shaft, light curtain forms hot spot through dimmer in the battle array sensor devices group of face, the position of hot spot feeds back to data processing module by face battle array sensor devices, the anglec of rotation corresponding according to the height and position of dimmer helix calculates the absolute rotational position of current measured axis, thus the circumscribed technical difficult problem of the encoder code disc solving prior art, the thinking that principle provides new is realized for scrambler.With compared with traditional measurement of correlation device, reduce manufacture difficulty, shorten the production cycle, reduce production cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the novel displacement measuring device in embodiment one;
Fig. 2 is the structural representation of dimmer;
Fig. 3 is photosensitive unit face battle array schematic diagram;
Fig. 4 is the measuring method process flow diagram of novel displacement measuring device.
Embodiment
Accompanying drawing, only for exemplary illustration, can not be interpreted as the restriction to this patent.
To those skilled in the art, in accompanying drawing, some known features and explanation thereof may be omitted is understandable.
Below in conjunction with drawings and Examples, be clearly and completely described the technical scheme in the present invention, obviously, described embodiment is only a part of embodiment of invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment one
In the present embodiment, using cmos image sensor as face battle array light activated element, face battle array light activated element is four, and on dimmer, the pitch of helix is 30mm, and cmos image sensor photosensitive unit is of a size of 2.2um × 2.2um.
As shown in Figure 1, for the structural representation of displacement measuring device novel in the present embodiment, this device comprises rotating shaft 1, LASER Light Source 2 is fixedly mounted in this rotating shaft 1, the mounting center of dimmer 3 and the center superposition of this rotating shaft 1, as shown in Figure 2, this dimmer 3 is the right cylinder device of middle part hollow out, described periphery has the gap of helix 31 shape, and the anglec of rotation of this helix 31 is more than 360; The photosensitive region of four unilateral array CMOS image sensor elements 4 is closed into arranged in squares outside dimmer 3 centered by the axis of rotating shaft 1, as shown in Figure 3, each photosensitive unit has its column locations address, when it is by light, this address can output signal, and the data processing module 5 being positioned at the side of this face array CMOS image sensor element 4 can carry out estimation & disposing to this signal, calculates the positional information of current measured axis and export.
Embodiment two
The present embodiment is the measuring method of novel displacement measuring device, as shown in Figure 4, specifically comprises the following steps:
S1, be connected with measured axis by the rotating shaft of shaft coupling by this device, rotating shaft and measured axis do synchronous rotary and move, LASER Light Source energising simultaneously, and laser light curtain is just with rotating shaft synchronous rotary;
Laser light curtain in S2, step S1 forms the hot spot of movement in the battle array sensor devices group of face through dimmer, the photosensitive unit of light produces electric signal, and by this Signal transmissions in step S3;
S3, data processing module carry out judgement screening to the electric signal that step S2 produces, and filter out the most sufficient electric signal of opto-electronic conversion, and produce the address information of the most sufficient electric signal of this opto-electronic conversion;
S4, data processing module carry out calculation process to the address information that step S3 produces, and draw the position of rotation of measured axis;
S5, step S4 is drawn measured axis angular position information export.
Wherein, the arithmetic processing method in described step S4 is made up of following formula:
As shown in Figure 3, each photosensitive unit has its column locations address, when it is by light, this address can output signal, and the photosensitive unit of this method to axially (namely arrange to) is encoded, if the photosensitive unit line number of sensitive volume is a, then be divided into a part 360, on definition dimmer 3, the reference position of helix is 0, then, when the i-th row has photosensitive unit light signal to be detected, now the position of rotation of measured axis is:
.
Embodiment three
By measuring method in the Novel angle displacement measuring device in conjunction with the embodiments in one and embodiment two in the present embodiment;
The column locations address of each cmos image sensor photosensitive unit as shown in Figure 3, the photosensitive unit of axial (column direction) is encoded, the reference position of definition dimmer helix is 0, then the photosensitive unit row address that the hot spot that appears in this position of laser is corresponding is k
1, and the row address of the photosensitive unit at 360 places is k
2.
During this measurement device, data processing module can pick out the most sufficient electric signal of signal opto-electronic conversion (photosensitive unit of its correspondence is photosensitive the most abundant), then obtains the row address of this signal; When detecting that this electric signal row address is the i-th row, so, now the absolute rotational position of measured axis is:
, thus calculate this measured axis position angle now, and export this position angle data.
In the present embodiment, pitch is 30mm, and photosensitive unit is of a size of 2.2um × 2.2um, then the present embodiment measurement precision reach:
, namely 1.584 '.
More than that better enforcement of the present invention is illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite without prejudice to spirit of the present invention, and these equivalent modification or replacement are all included in the application's claim limited range.
Claims (7)
1. a Novel angle displacement measuring device, it is characterized in that, comprise rotating shaft, LASER Light Source, dimmer, face battle array sensor devices group and data processing module, this rotating shaft is provided with LASER Light Source, described dimmer ring-type parcel is installed on around described rotating shaft, described battle array sensor devices group is arranged at outside described dimmer, and described data processing module is connected with described battle array sensor devices group.
2. a kind of Novel angle displacement measuring device as claimed in claim 1, is characterized in that, described dimmer is the right cylinder device of middle part hollow out, and described periphery has the gap of a zigzag shape.
3. a kind of Novel angle displacement measuring device as claimed in claim 2, it is characterized in that, the anglec of rotation of described helix is more than 360.
4. a kind of Novel angle displacement measuring device as claimed in claim 1, is characterized in that, described battle array sensor devices group is not less than the light-sensitive array element of three by quantity or the light-sensitive array element in closed hoop of customization is formed.
5. as right wants a kind of Novel angle displacement measuring device as described in 1, it is characterized in that, described data processing module is used for this face battle array sensor devices group output signal is carried out to estimation & disposing, calculated the positional information of current measured axis and export.
6. a measuring method for Novel angle displacement measuring device, is characterized in that, comprises the following steps:
S1, be connected with measured axis by the rotating shaft of shaft coupling by this device, rotating shaft and measured axis do synchronous rotary and move, LASER Light Source energising simultaneously, and laser light curtain is with rotating shaft synchronous rotary;
Laser light curtain in S2, step S1 forms the hot spot of movement in the battle array sensor devices group of face through dimmer, the photosensitive unit of light produces electric signal, and by this Signal transmissions in step S3;
S3, data processing module carry out judgement screening to the electric signal that step S2 produces, and filter out the most sufficient electric signal of opto-electronic conversion, and produce the address information of this electric signal;
S4, data processing module carry out calculation process to the address information that step S3 produces, and draw the spin angular position of measured axis;
S5, step S4 is drawn measured axis spin angular position information export.
7. the measuring method of a kind of Novel angle displacement measuring device as claimed in claim 6, it is characterized in that, the arithmetic processing method in described step S4 is specifically made up of following formula:
The reference position of the helix on definition dimmer is 0
Wherein:
for the angle of measured axis;
A is the photosensitive unit line number of face battle array light activated element sensitive volume;
I is the particular row numerical value in the battle array light activated element of face, opto-electronic conversion the most sufficient electric signal row address place.
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| CN201510007786.4A CN104567741B (en) | 2015-01-08 | 2015-01-08 | A kind of new angle displacement measuring device and its measuring method |
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| CN201510007786.4A CN104567741B (en) | 2015-01-08 | 2015-01-08 | A kind of new angle displacement measuring device and its measuring method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104932539A (en) * | 2015-05-04 | 2015-09-23 | 陈超 | High precision angle positioning device |
| CN109459447A (en) * | 2018-11-23 | 2019-03-12 | 菲特（天津）检测技术有限公司 | Illuminating source structure, column workpiece detection device and detection method |
| CN110186399A (en) * | 2019-06-20 | 2019-08-30 | 珠海格力电器股份有限公司 | Driver positioning accuracy detection device and method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991506B (en) * | 2017-10-26 | 2019-11-29 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of device and test method of test pendulum scarnning mirror speed and uniformity |
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| CN1134542A (en) * | 1995-04-27 | 1996-10-30 | 胡柳嘉 | Laser optical-disk type angle displacement sensor |
| CN1276749A (en) * | 1997-10-17 | 2000-12-13 | 毕晓普创新有限公司 | Method for manufacture of optical torque transducers |
| CN201130030Y (en) * | 2007-12-07 | 2008-10-08 | 华中科技大学 | Laser phase grating interference displacement sensor |
| CN101968366A (en) * | 2010-07-15 | 2011-02-09 | 南京中科天文仪器有限公司 | Automatic zeroing method and equipment for incremental sensor |
| CN102147238A (en) * | 2011-03-04 | 2011-08-10 | 常州工学院 | Device for detecting cam profile |
| CN102914277A (en) * | 2012-10-17 | 2013-02-06 | 重庆大学 | Photoelectric sensor for measuring angular displacement of rotating shaft and measurement method thereof |
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2015
- 2015-01-08 CN CN201510007786.4A patent/CN104567741B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1134542A (en) * | 1995-04-27 | 1996-10-30 | 胡柳嘉 | Laser optical-disk type angle displacement sensor |
| CN1276749A (en) * | 1997-10-17 | 2000-12-13 | 毕晓普创新有限公司 | Method for manufacture of optical torque transducers |
| CN201130030Y (en) * | 2007-12-07 | 2008-10-08 | 华中科技大学 | Laser phase grating interference displacement sensor |
| CN101968366A (en) * | 2010-07-15 | 2011-02-09 | 南京中科天文仪器有限公司 | Automatic zeroing method and equipment for incremental sensor |
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| CN102914277A (en) * | 2012-10-17 | 2013-02-06 | 重庆大学 | Photoelectric sensor for measuring angular displacement of rotating shaft and measurement method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104932539A (en) * | 2015-05-04 | 2015-09-23 | 陈超 | High precision angle positioning device |
| CN109459447A (en) * | 2018-11-23 | 2019-03-12 | 菲特（天津）检测技术有限公司 | Illuminating source structure, column workpiece detection device and detection method |
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| CN110186399A (en) * | 2019-06-20 | 2019-08-30 | 珠海格力电器股份有限公司 | Driver positioning accuracy detection device and method |
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Inventor after: Liu Zhicheng Inventor after: Wang Xinli Inventor after: Chen Xindu Inventor before: Wang Xinli Inventor before: Chen Xindu |
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