CN1621776A - New pattern displacement gauge - Google Patents
New pattern displacement gauge Download PDFInfo
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- CN1621776A CN1621776A CN 200410103404 CN200410103404A CN1621776A CN 1621776 A CN1621776 A CN 1621776A CN 200410103404 CN200410103404 CN 200410103404 CN 200410103404 A CN200410103404 A CN 200410103404A CN 1621776 A CN1621776 A CN 1621776A
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- laser
- displacement meter
- suspension system
- laser ranging
- sensor
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Abstract
The new type of displacement meter includes laser source and laser range finding assembly for ranging; suspension system to make the laser source in suspension state; and signal processing unit to process measuring signal and display or output. The laser source, the laser range finding assembly and the suspension system are set inside one casing, and the measuring output of the laser range finding assembly is connected to the signal processing unit. Owing to the suspension technology and the laser ranging technology, the present invention measures the absolute displacement amount in the nanometer level precision, and has no phase shift variation, flat frequency response in wide frequency range, capacity of measuring static displacement, powerful anti-jamming capacity and high stability. The present invention may find its application in many fields.
Description
Technical field
The present invention relates to a kind of high precision displacement measurement mechanism.
Background technology
In test and control field, sensor is as requisite critical elements, the quality of its quality is directly determining the success or failure of whole process, and fast development along with modern science and technology, measure with the parameter of control also more and more, be applied to various fields such as Aeronautics and Astronautics, weapons, boats and ships, communications and transportation, metering more and more widely, and introducing in the daily life.But the displacement meter that uses in the engineering mostly is the velocity profile displacement meter at present, it is not displacement meter truly, such displacement meter is to become displacement by the speed amount Integral Transformation that integrating circuit is tested reality, need and secondary instrument, as supporting uses such as strainmeter, numerical value voltage tables, its frequency band is narrower, measurement sensitivity is relatively low, need measure sensitivity to improve it by amplifier usually.
Summary of the invention
At the deficiency that prior art exists, the object of the present invention is to provide a kind ofly to have linear phase and the smooth high precision displacement meter of frequency response in the frequency band of broad.
For achieving the above object, displacement meter of the present invention comprises:
Lasing light emitter is used to carry out laser ranging;
The laser ranging assembly matches with lasing light emitter and to carry out laser ranging;
Suspension system is used to make lasing light emitter to be in suspended state;
Signal processing apparatus is handled back demonstration or output to measured value;
Above-mentioned lasing light emitter, laser ranging assembly and suspension system all are arranged in the body, and the measurement output terminal of laser ranging assembly links to each other with signal processing apparatus.
Further, described lasing light emitter comprises one or two or three laser heads, and its transmit direction is one dimension, two dimension, three-dimensional shape respectively.
Further, described laser ranging assembly comprises laser grating, and this laser grating is arranged on and laser head levitation position corresponding section, makes that the emission light of laser head can inswept laser grating when body is subjected to displacement.
Further, described laser grating is positioned on the inwall of body, around the laser head setting.
Further, described laser ranging assembly comprises the CCD position transducer, and this CCD position transducer is arranged on and laser head levitation position corresponding section, makes that the emission light of laser head can inswept its sensitive surface when body is subjected to displacement.
Further, described laser ranging assembly comprises the laser ranging receiver, is provided with in the body and the corresponding catoptron of laser head, and the laser ranging receiver is arranged on the reflected light path of laser.
Further, described suspension system is positioned at body intracavity bottom centre, and lasing light emitter is positioned at directly over the suspension system.
Further, described suspension system can be magnetic levitation system, comprising:
Rotor, laser head are arranged on this rotor;
Actuator mainly is made of electromagnet and power amplifier, and rotor can be in stable suspended state under the magneticaction of electromagnet;
Sensor is used for the displacement that detection rotor departs from reference point;
Controller comprises microprocessor, be used for sensor to shift transformation become control signal to export to actuator, keep rotor to be in suspended state by the size of adjusting electromagnet magnetic force in the actuator;
The output terminal of sensor links to each other with controller, controller becomes control signal with the shift transformation that detects, power amplifier converts this control signal to Control current then, and Control current produces magnetic force in electromagnet, turns back to original equilibrium position thereby drive rotor.
Further, described suspension system can be the gas suspension device, comprising:
Air bag, laser head are arranged on picking up of its top and shake the position;
Sensor is used to detect the displacement that reference point is departed from ten shake positions;
Actuator mainly is made of amplifier and aerating device;
Controller comprises microprocessor, be used for sensor to shift transformation become control signal to export to actuator, keep picking up the shake position by the size of adjusting aerating device aeration quantity in the actuator and be in suspended state;
The output terminal of sensor links to each other with controller, controller becomes control signal with the shift transformation that detects, amplifier flows to aerating device with this control signal then, and aerating device is given airbag aeration then, and the position turns back to original equilibrium position thereby shake is picked up in driving.
The present invention adopts magnetic levitation or gas suspension device that laser head is suspended, make it keep absolute rest, when testee moves, the displacement meter body that is installed on it also moves synchronously, make the skyborne laser head of static suspension be shifted, produce relative motion, thereby utilize multiple laser ranging technique just can obtain the accurate movement displacement with respect to the displacement meter body.
Because displacement meter of the present invention has adopted suspension technology and laser ranging technique, therefore the displacement of being tested is the absolute displacement amount, measuring accuracy reaches nanoscale, overcome the shortcoming of traditional displacement meter, no phase shift variations, and frequency response is smooth in the frequency band of broad, even can test off-position and move, have stronger anti-electromagnetic interference capability, good stability is being with a wide range of applications such as many fields such as Aero-Space, robot manufacturing, weapons manufacturing, engineering vibration-testings.
Description of drawings
Fig. 1 is the structural principle synoptic diagram of the specific embodiment of the invention;
Fig. 2 is the composition synoptic diagram of magnetic suspension system;
Fig. 3 is the structured flowchart of gas suspension system;
The structural principle synoptic diagram of Fig. 4 for adopting ccd sensor to carry out laser ranging;
The structural principle synoptic diagram of Fig. 5 for adopting the laser ranging receiver to carry out laser ranging;
Embodiment:
As shown in Figure 1, pendulum mass 3, laser grating 4 and suspension system 5 all are arranged in the body 1, the measurement output terminal of laser grating 4 links to each other with signal processing apparatus, signal processing apparatus is handled back demonstration or output to measured value, suspension system 5 is positioned at body intracavity bottom centre, pendulum mass 3 be positioned at suspension system 5 directly over, can under the effect of suspension system 5, be in the suspended state of absolute rest, pendulum mass 3 is provided with laser head 10, laser grating 4 is arranged on the interior wall of body, when laser head 10 is in suspended state, just be positioned within the measurement range of laser grating 4, when body 1 was subjected to displacement, the laser beam that laser head 10 sends was subjected to displacement on laser grating 4, thereby promptly can read the moving displacement amount according to laser grating 4.
As shown in Figure 2, magnetic levitation system is mainly by rotor 11, sensor 6, controller 7, power amplifier 8, electromagnet 9 is formed, laser head is arranged on the rotor 11, rotor 11 is in stable suspended state under the magneticaction of electromagnet 9, if on the reference position, rotor 11 is subjected to a downward disturbance, will depart from its reference position, at this moment sensor 6 detects the displacement that rotor 11 departs from reference point, microprocessor as controller 7 becomes control signal with the shift transformation that detects, power amplifier 8 converts this control signal to Control current then, Control current produces magnetic force in electromagnet 9, turn back to original equilibrium position thereby drive rotor 11, therefore, be subjected to downward or upward disturbance no matter change 11 sons, rotor can be in stable equilibrium state all the time.
Suspension system also can adopt the gas suspension device, as shown in Figure 3, the gas suspension device is mainly by displacement transducer, controller, power amplifier, aerating device and air bag etc. are partly formed, laser head is arranged on picking up of its top and shakes the position, if on the reference position, place the shake position of picking up on air bag top that disturbance takes place, depart from its reference position, at this moment sensor goes out the displacement that reference point is departed from ten shake positions, microprocessor as controller becomes control signal with the shift transformation that detects, power amplifier flows to the intrasystem aerating device of gas suspension with this control signal then, then aerating device is given airbag aeration, partly turns back to original equilibrium position thereby drive to pick up to shake.
Certainly, laser ranging also is not limited to laser grating, also can adopt the CCD position transducer, as shown in Figure 4, the signal output part of CCD position transducer 21 links to each other with signal processing apparatus 24, CCD position transducer 21 is arranged on and laser head 22 levitation position corresponding sections, makes that the emission light of laser head 22 can inswept its sensitive surface when CCD position transducer 21 is subjected to displacement with body 23, and displacement also records thus.
Laser ranging also can be adopted the light wave distance measuring method of development comparative maturity, promptly the computing formula according to D=ct draws displacement, D is 2 distances, c is the light velocity, t is that laser is covered the required time of this segment distance, as shown in Figure 5, catoptron 32 is arranged on the body inwall, relative with laser head 31, laser ranging receiver 33 is arranged on the reflected light path, and its output terminal links to each other with signal processing apparatus 34, when body is subjected to displacement with measured object, suspending also produces identical displacement between static laser head 31 and the catoptron 32, and laser ranging receiver 33 can detect the displacement of both relative motions and the output that converts at any time.
The physical dimension of displacement meter of the present invention is decided on measurement range, if measurement range is big, then suspension system needs very wide suspension field force, what therefore the displacement meter physical dimension was relative also can be bigger, measure for common engineering vibration displacement, the physical dimension of displacement meter can with other type displacement meter quite.
Claims (9)
1, a kind of novel displacement meter is characterized in that it comprises:
Lasing light emitter is used to carry out laser ranging;
The laser ranging assembly matches with lasing light emitter and to carry out laser ranging;
Suspension system is used to make lasing light emitter to be in suspended state;
Signal processing apparatus is handled back demonstration or output to measured value;
Above-mentioned lasing light emitter, laser ranging assembly and suspension system all are arranged in the body, and the measurement output terminal of laser ranging assembly links to each other with signal processing apparatus.
2, a kind of novel displacement meter as claimed in claim 1 is characterized in that, described lasing light emitter comprises one or two or three laser heads, and its transmit direction is one dimension, two dimension, three-dimensional shape respectively.
3, a kind of novel displacement meter as claimed in claim 1, it is characterized in that, described laser ranging assembly comprises laser grating, and this laser grating is arranged on and laser head levitation position corresponding section, makes that the emission light of laser head can inswept laser grating when body is subjected to displacement.
4, a kind of novel displacement meter as claimed in claim 3 is characterized in that, described laser grating is positioned on the inwall of body, around the laser head setting.
5, a kind of novel displacement meter as claimed in claim 1, it is characterized in that, described laser ranging assembly comprises ccd sensor, and this ccd sensor is arranged on and laser head levitation position corresponding section, makes that the emission light of laser head can inswept its sensitive surface when body is subjected to displacement.
6, a kind of novel displacement meter as claimed in claim 1 is characterized in that, described laser ranging assembly comprises the laser ranging receiver, is provided with in the body and the corresponding catoptron of laser head, and the laser ranging receiver is arranged on the reflected light path of laser.
7, a kind of novel displacement meter as claimed in claim 1 is characterized in that, described suspension system is positioned at body intracavity bottom centre, and lasing light emitter is positioned at directly over the suspension system.
8, as the arbitrary described a kind of novel displacement meter of claim 2 to 7, it is characterized in that described suspension system can be magnetic levitation system, comprising:
Rotor, laser head are arranged on this rotor;
Actuator mainly is made of electromagnet and power amplifier, and rotor can be in stable suspended state under the magneticaction of electromagnet;
Sensor is used for the displacement that detection rotor departs from reference point;
Controller comprises microprocessor, be used for sensor to shift transformation become control signal to export to actuator, keep rotor to be in suspended state by the size of adjusting electromagnet magnetic force in the actuator;
The output terminal of sensor links to each other with controller, controller becomes control signal with the shift transformation that detects, power amplifier converts this control signal to Control current then, and Control current produces magnetic force in electromagnet, turns back to original equilibrium position thereby drive rotor.
9, as the arbitrary described a kind of novel displacement meter of claim 2 to 7, it is characterized in that described suspension system can be the gas suspension device, comprising:
Air bag, laser head are arranged on picking up of its top and shake the position;
Sensor is used to detect the displacement that reference point is departed from ten shake positions;
Actuator mainly is made of amplifier and aerating device;
Controller comprises microprocessor, be used for sensor to shift transformation become control signal to export to actuator, keep picking up the shake position by the size of adjusting aerating device aeration quantity in the actuator and be in suspended state;
The output terminal of sensor links to each other with controller, controller becomes control signal with the shift transformation that detects, amplifier flows to aerating device with this control signal then, and aerating device is given airbag aeration then, and the position turns back to original equilibrium position thereby shake is picked up in driving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410103404XA CN1300547C (en) | 2004-12-29 | 2004-12-29 | New pattern displacement gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410103404XA CN1300547C (en) | 2004-12-29 | 2004-12-29 | New pattern displacement gauge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1621776A true CN1621776A (en) | 2005-06-01 |
| CN1300547C CN1300547C (en) | 2007-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200410103404XA Expired - Fee Related CN1300547C (en) | 2004-12-29 | 2004-12-29 | New pattern displacement gauge |
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| Country | Link |
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| CN (1) | CN1300547C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500676A (en) * | 2016-11-23 | 2017-03-15 | 广西交通科学研究院 | Electromagnetic levitation type bridge pier top deviation measurement device and its measuring method |
| CN106644757A (en) * | 2016-11-17 | 2017-05-10 | 中国地质大学（武汉） | Rock and earth mass shear rheometer taking rainfall and blast vibration reciprocal actions into account |
| CN106767608A (en) * | 2016-11-23 | 2017-05-31 | 广西交通科学研究院 | Electromagnetic levitation type bearing horizontal displacement measurement apparatus and its measuring method |
| CN106840115A (en) * | 2016-11-23 | 2017-06-13 | 广西交通科学研究院 | Electromagnetic levitation type bridge main tower tower top deviation measurement device and its measuring method |
| CN107631693A (en) * | 2017-09-14 | 2018-01-26 | 重庆大学 | A kind of two-dimentional multiple spot laser displacement measurement system |
| CN112531454A (en) * | 2020-11-13 | 2021-03-19 | 杭州电子科技大学 | Positioning and temperature control device and method of PPKTP crystal for quantum light preparation |
| CN114532980A (en) * | 2021-12-01 | 2022-05-27 | 南方医科大学南方医院 | Human-computer interaction auxiliary diagnosis equipment and method for hospital |
| CN114688959A (en) * | 2022-04-11 | 2022-07-01 | 水利部交通运输部国家能源局南京水利科学研究院 | Detection device and detection method for horizontal displacement of test structure |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5144487A (en) * | 1991-09-03 | 1992-09-01 | Pacific Laser | Portable laser device for alignment tasks |
| CN1252907C (en) * | 2003-01-03 | 2006-04-19 | 浙江理工大学 | Magnetic suspension type micro motion system |
-
2004
- 2004-12-29 CN CNB200410103404XA patent/CN1300547C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644757A (en) * | 2016-11-17 | 2017-05-10 | 中国地质大学（武汉） | Rock and earth mass shear rheometer taking rainfall and blast vibration reciprocal actions into account |
| CN106500676A (en) * | 2016-11-23 | 2017-03-15 | 广西交通科学研究院 | Electromagnetic levitation type bridge pier top deviation measurement device and its measuring method |
| CN106767608A (en) * | 2016-11-23 | 2017-05-31 | 广西交通科学研究院 | Electromagnetic levitation type bearing horizontal displacement measurement apparatus and its measuring method |
| CN106840115A (en) * | 2016-11-23 | 2017-06-13 | 广西交通科学研究院 | Electromagnetic levitation type bridge main tower tower top deviation measurement device and its measuring method |
| CN107631693A (en) * | 2017-09-14 | 2018-01-26 | 重庆大学 | A kind of two-dimentional multiple spot laser displacement measurement system |
| CN107631693B (en) * | 2017-09-14 | 2020-02-07 | 重庆大学 | Two-dimensional multipoint laser displacement measurement system |
| CN112531454A (en) * | 2020-11-13 | 2021-03-19 | 杭州电子科技大学 | Positioning and temperature control device and method of PPKTP crystal for quantum light preparation |
| CN114532980A (en) * | 2021-12-01 | 2022-05-27 | 南方医科大学南方医院 | Human-computer interaction auxiliary diagnosis equipment and method for hospital |
| CN114532980B (en) * | 2021-12-01 | 2023-09-01 | 南方医科大学南方医院 | Application method of man-machine interaction auxiliary diagnosis equipment for hospitals |
| CN114688959A (en) * | 2022-04-11 | 2022-07-01 | 水利部交通运输部国家能源局南京水利科学研究院 | Detection device and detection method for horizontal displacement of test structure |
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| Publication number | Publication date |
|---|---|
| CN1300547C (en) | 2007-02-14 |
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Granted publication date: 20070214 Termination date: 20100129 |