CN1123405A - Method for measuring size of object and apparatus thereof - Google Patents
Method for measuring size of object and apparatus thereof Download PDFInfo
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- CN1123405A CN1123405A CN 95105928 CN95105928A CN1123405A CN 1123405 A CN1123405 A CN 1123405A CN 95105928 CN95105928 CN 95105928 CN 95105928 A CN95105928 A CN 95105928A CN 1123405 A CN1123405 A CN 1123405A
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Abstract
The measuring method comprises converting a beam of laser light into an uniform parallel light beam, placing an object in the range of the said beam and measuring the voltage variation to achieve the aim of determing the diameter (thickness or width) of the object. The device includes a piece of biconvex lens which can convert the conic beam emitted from the laser into a parallel beam, and a piece of biconcave grating hole which converts the parallel beam into a parallel beam with the same cross-section as the hole. Advantage: simple structure, convenient operation, small size, low cost and high accuracy.
Description
The present invention relates to a kind ofly change laser beam into even directional light irradiating object, measure the method and the equipment thereof of its diameter, thickness, width etc., be applicable to various wire rods, the measurement of tubing or other object measured piece by optical system.
Applicating laser technology is measured wire rod, pipe diameter, and the method and the equipment thereof of thickness, width etc. have obtained application in commercial production.Wherein be referred to as the method and the equipment thereof of " sweep type laser diameter measurement " exactly with the immediate technology of the present invention.The principle of work of this instrument and equipment be with laser beam irradiation to rotating mirror by driven by motor rotation, laser beam is moved with uniform angular velocity, when laser beam during by the linear sweep lens, scanning laser line promptly becomes even linear velocity by uniform angular velocity.Light converges on the photodetector by integration lens more then, when object is between scanner head and reception head, will produce certain being in the light the time, and the difference of the time that utilization is in the light and is not in the light records numerical value such as the diameter of object, thickness, width.The adopting said method Measuring Object, very high to the measuring equipment requirement, the wow and flutter of motor, the drift of circuit component temperature, the variation of season and weather can both produce bigger adverse effect to measuring accuracy.Measuring equipment start back is longer stabilization time in addition, thereby has influenced the line operation.Because equipment must have movement parts, make and use inconvenience by complex structure that fault is many besides, volume is big, the cost height.Though the people was arranged afterwards on this basis to the motor speed shakiness, component parameter in wow and flutter and the signal processing circuit is subjected to temperature variation and unstable has done some for influence that measuring accuracy caused to compensate, for example: the patented claim of University of Electronic Science and Technology (application number 91107169.5), it is at F (Q)
Settled a standard light blocking part between A/D transducer and terminal presentation facility, the computer processing system that carries out data processing and measurement Error Compensation to be arranged between lens and the integration lens, but still do not solve complex structure, use inconvenience, volume is big, the problem that cost is high.
Purpose of the present invention just provides a kind of energy that utilizes laser in object enters measurement range, because of object blocks the laser measuring apparatus that the relative principle that reduces designs, makes it not have motion, and easy to operate, volume is little, and cost is low.
Technical scheme of the present invention is to be that to place a light hole before or after the lens of the parallel light velocity be concave concave strip light hurdle in the approximate conical Beam Transformation that Laser Devices are sent, and promptly becoming the cross section after laser beam is by light hole is concave concave parallel beam.We know, the laser beam that laser diode sends is though can change parallel beam into lens combination, but on the direction of wide emission angle, its energy is to be normal distribution, and promptly the vertical plane self-energy of parallel beam is not the state of being evenly distributed, middle strong, a little less than the both sides.If put into parallel beam with testee this moment, place different positions, because the energy that retaining goes is strong and weak different, the change in voltage that the photoelectricity receiving end is risen is also just different, measures and has also just lost accuracy.The double concave light hole light hurdle of this programme design, solved the uneven problem of above-mentioned parallel beam energy distribution, laser beam is by behind the light hole, promptly becoming a cross section is concave concave parallel beam, this light beam is the energy distribution approximately equal on the double concave long axis direction, and an obvious object is placed on the caused change in voltage in the interior arbitrary position of such light beam scope also with basically identical.Reduce principle like this with regard to having guaranteed to utilize laser energy to be blocked and measure the diameter of measured object, the possibility of thickness, width and accuracy by testee.
The measuring equipment of realizing above-mentioned measuring method includes: a generating laser, the approximate conical Beam Transformation that Laser Devices can be sent is the lens combination of parallel beam, one can change collimated laser beam into the uniform light hole of one dimension oriented energy is double concave strip light hurdle, one can receive collimated laser beam, and laser beam converged to plus lens system on the photoelectric device, a photoelectric device, and voltage amplifier system.
The present invention has adopted the light hurdle of special concave-concave curve light hole to solve the uneven problem of energy distribution in the laser beam, makes to utilize laser energy to be blocked by measured object and reduce principle Measuring Object diameter, and width, thickness become possibility.With the method Measuring Object diameter, wide, thick etc. all simple and easy to do, equipment need not any motion, and volume is little, and cost is low, has also simplified circuit.
The invention will be further described with reference to the accompanying drawings below.
Fig. 1 light path principle figure
Fig. 2 concave-concave curve light hole light hurdle structural representation,
Wherein: 1. high stable power supply 2. laser instruments 3. transmissive mirror 4. smooth hurdle 5. measured objects, 6. plus lens, 7. photoelectric devices, 8. amplifiers
As shown in Figure 1: link to each other with high stable power supply (1) by laser instrument (2), a two-sided protruding transmissive mirror (3) is placed on laser instrument before, concave-concave curve light hole light hurdle (4) retaining is constituted the ejector system of measuring equipment before or after the transmissive mirror.Receiver system is the plus lens (6) that receives parallel beam by, and photoelectric device (7) places thereafter and the formation that links to each other with voltage amplifier (8).Measuring process is as follows: at first testee (5) is placed between transmissive mirror and the plus lens, make the major axis of the axis normal of testee in beam cross section.The high stable light beam that sends from laser instrument becomes parallel beam through lens, for becoming xsect, the light hole light hurdle of spill is laser beam with the light hole similar shape through two-sided again, this light beam is from concave concave short-axis direction, the energy that unit length is launched is uneven, but sees that from the double concave long axis direction energy that unit length launches is uniform really.When this light process testee, portion of energy will be blocked by measured object, and institute's energy that blocks and diameter that measured object is surveyed (width, thickness) are linear.Dump energy is received and input amplifier circuit by photoelectric device by plus lens, diameter (width, thickness) the changing of line that the output voltage of amplifier circuit is measured with measured object handled diameter (width, the thickness) actual value that gets final product Measuring Object through AD/DA again.
Claims (2)
1. the method for a Measuring Object size, it is to enter that measurement range internal cause object blocks and reduce the method that records dimension of object relatively at object with the energy of laser, it is characterized in that: it is to change the approximate conical light beam that laser instrument emits into parallel beam by the lenticular lens that is placed in before the laser instrument, be that the curved strip light of concave-concave hurdle changes parallel beam into cross section and with the parallel beam of light hurdle light hole similar shape light beam equated along strip light hurdle long axis direction energy approximation everywhere by being placed in light hole before or after the convex lens again, measured object is placed among this parallel beam, by measured object be in the light how much to cause that receiving-end voltage changes the diameter that records object (wide, thick).
2. one kind is the custom-designed measuring equipment of use claim 1, and it is characterized in that: it is the laser instrument (2) that links to each other by with high stable power supply (1); A lenticular lens (3) that is placed on before the laser instrument, one places the concave-concave curve light hole light hurdle (4) before or after the transmissive mirror to form ejector system; By being positioned at the plus lens (6) after transmissive mirror or the concave-concave curve light hole light hurdle and placing thereafter phototube (8), the voltage amplifier that links to each other with phototube (8) composition receiver system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95105928 CN1123405A (en) | 1995-06-02 | 1995-06-02 | Method for measuring size of object and apparatus thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95105928 CN1123405A (en) | 1995-06-02 | 1995-06-02 | Method for measuring size of object and apparatus thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1123405A true CN1123405A (en) | 1996-05-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95105928 Pending CN1123405A (en) | 1995-06-02 | 1995-06-02 | Method for measuring size of object and apparatus thereof |
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| CN (1) | CN1123405A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100387929C (en) * | 2006-05-24 | 2008-05-14 | 长春理工大学 | Triple-prism height laser non-contacting detection method and apparatus |
| CN101836073A (en) * | 2007-10-23 | 2010-09-15 | Gii采集有限责任公司,以总检测有限责任公司的名义营业 | The method and system that is used for optically inspecting parts |
| CN102410813A (en) * | 2011-12-12 | 2012-04-11 | 上海博泽电机有限公司 | Motor jolt detection device and method |
| CN102980524A (en) * | 2012-10-30 | 2013-03-20 | 吴江新劲纺织有限公司 | Synthetic fiber detection device |
| CN103300863A (en) * | 2013-06-19 | 2013-09-18 | 张英泽 | Laser ruler for surgical operation |
| CN104406533A (en) * | 2014-11-28 | 2015-03-11 | 沈阳飞机工业（集团）有限公司 | Laser diameter measuring instrument calibrating method |
| CN106370074A (en) * | 2016-08-29 | 2017-02-01 | 合肥常青机械股份有限公司 | Automobile tubular beam specification gauge device |
| CN106862157A (en) * | 2017-01-13 | 2017-06-20 | 深圳市金洲精工科技股份有限公司 | Contourgraph and its lens care method |
| CN107702650A (en) * | 2017-09-12 | 2018-02-16 | 广东技术师范学院 | A kind of metal wire rod on-line detecting system |
| CN109282748A (en) * | 2018-11-12 | 2019-01-29 | 苏州经贸职业技术学院 | A kind of photoelectric precision detection system of embedded technology |
| CN110440706A (en) * | 2019-07-24 | 2019-11-12 | 天津大学 | Device and its application method based on the Linear Laser measurement winch drum wiring number of plies |
| CN110793457A (en) * | 2019-10-31 | 2020-02-14 | 安徽三弟电子科技有限责任公司 | Electronic measuring instrument structure for highlight environment |
| CN110836693A (en) * | 2019-11-19 | 2020-02-25 | 中国科学院合肥物质科学研究院 | Method and device for measuring size and injection frequency of impurity shot |
| CN117824511A (en) * | 2023-12-05 | 2024-04-05 | 钛玛科（北京）工业科技有限公司 | Measuring device for measuring high-speed width by infrared light |
-
1995
- 1995-06-02 CN CN 95105928 patent/CN1123405A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100387929C (en) * | 2006-05-24 | 2008-05-14 | 长春理工大学 | Triple-prism height laser non-contacting detection method and apparatus |
| CN101836073A (en) * | 2007-10-23 | 2010-09-15 | Gii采集有限责任公司,以总检测有限责任公司的名义营业 | The method and system that is used for optically inspecting parts |
| CN102410813A (en) * | 2011-12-12 | 2012-04-11 | 上海博泽电机有限公司 | Motor jolt detection device and method |
| CN102410813B (en) * | 2011-12-12 | 2014-03-19 | 上海博泽电机有限公司 | Motor jolt detection device and method |
| CN102980524A (en) * | 2012-10-30 | 2013-03-20 | 吴江新劲纺织有限公司 | Synthetic fiber detection device |
| CN103300863A (en) * | 2013-06-19 | 2013-09-18 | 张英泽 | Laser ruler for surgical operation |
| CN103300863B (en) * | 2013-06-19 | 2014-09-10 | 张英泽 | Laser ruler for surgical operation |
| CN104406533A (en) * | 2014-11-28 | 2015-03-11 | 沈阳飞机工业（集团）有限公司 | Laser diameter measuring instrument calibrating method |
| CN106370074A (en) * | 2016-08-29 | 2017-02-01 | 合肥常青机械股份有限公司 | Automobile tubular beam specification gauge device |
| CN106862157A (en) * | 2017-01-13 | 2017-06-20 | 深圳市金洲精工科技股份有限公司 | Contourgraph and its lens care method |
| CN106862157B (en) * | 2017-01-13 | 2019-07-30 | 深圳市金洲精工科技股份有限公司 | Contourgraph and its lens care method |
| CN107702650A (en) * | 2017-09-12 | 2018-02-16 | 广东技术师范学院 | A kind of metal wire rod on-line detecting system |
| CN109282748A (en) * | 2018-11-12 | 2019-01-29 | 苏州经贸职业技术学院 | A kind of photoelectric precision detection system of embedded technology |
| CN110440706A (en) * | 2019-07-24 | 2019-11-12 | 天津大学 | Device and its application method based on the Linear Laser measurement winch drum wiring number of plies |
| CN110793457A (en) * | 2019-10-31 | 2020-02-14 | 安徽三弟电子科技有限责任公司 | Electronic measuring instrument structure for highlight environment |
| CN110836693A (en) * | 2019-11-19 | 2020-02-25 | 中国科学院合肥物质科学研究院 | Method and device for measuring size and injection frequency of impurity shot |
| CN110836693B (en) * | 2019-11-19 | 2021-08-13 | 中国科学院合肥物质科学研究院 | Method and device for measuring size and injection frequency of impurity shot |
| CN117824511A (en) * | 2023-12-05 | 2024-04-05 | 钛玛科（北京）工业科技有限公司 | Measuring device for measuring high-speed width by infrared light |
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