KR20010096244A - Displacement measuring apparatus using electromagnetic standing wave - Google Patents
Displacement measuring apparatus using electromagnetic standing wave Download PDFInfo
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- KR20010096244A KR20010096244A KR1020000020262A KR20000020262A KR20010096244A KR 20010096244 A KR20010096244 A KR 20010096244A KR 1020000020262 A KR1020000020262 A KR 1020000020262A KR 20000020262 A KR20000020262 A KR 20000020262A KR 20010096244 A KR20010096244 A KR 20010096244A
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- optical sensor
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- standing wave
- electromagnetic
- electromagnetic wave
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
- H05B41/295—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
- H05B41/298—Arrangements for protecting lamps or circuits against abnormal operating conditions
- H05B41/2981—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
- G08B7/062—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources indicating emergency exits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
- H02J9/065—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads for lighting purposes
Abstract
Description
본 발명은 도파관에 유도된 전자기 정상파를 이용하여 변위를 측정하는 장치에 관한 것이다.The present invention relates to an apparatus for measuring displacement using electromagnetic standing waves induced in a waveguide.
일반적으로 미세 변위의 변화를 측정하는 변위 센서의 종류는 광센서, 정전용량형 근접센서, LVDT, COD 게이지(gage) 등이 사용되고 있다.Generally, optical sensors, capacitive proximity sensors, LVDTs, COD gauges, etc., are used as the types of displacement sensors that measure the change of fine displacement.
또한, 상기 광센서의 종류에도 여러가지가 있으나 그 중에서 포토다이오드가 일반적으로 사용되고 있는데, 이 센서는 직진성, 고속응답, 파장감도 등의 장점이 있으나 출력전류가 작아 트랜지스터나 IC등의 증폭수단을 병행해야하는 문제점이 있었다.In addition, although there are various types of optical sensors, photodiodes are generally used. The sensors have advantages such as linearity, high-speed response, and wavelength sensitivity, but the output current is small so that amplification means such as transistors or ICs must be used in parallel. There was a problem.
또한, 정전용량형 근접센서는 도체 및 유도체의 모든 물체의 검출이 가능하며 이것은 정전용량 근접센서에 검출물질에 접근시 전극간의 정전용량 변화에 따른 전기신호를 이용하여 변위를 측정하게 된다. 그러나 변위를 측정하고자 하는 물질이 부도체일 경우 사용할 수 없다는 문제점이 있었다.In addition, the capacitive proximity sensor is capable of detecting all objects of conductors and derivatives. When the proximity sensor approaches the detection material, the capacitive proximity sensor measures displacement using an electric signal according to the change of capacitance between electrodes. However, there was a problem that can not be used when the material to measure the displacement is an insulator.
또한, LVDT는 차동트랜스를 이용하여 일정 주파수, 일정전압으로 여자되는 1차코일 그리고 역극성으로 접속된 2차 코일과 운동해서 움직이는 철tla으로 구성되어 철심의 위치에 따라 2차코일에 유기되는 기전력의 변화를 이용하여 변위를 측정하는 센서이다.In addition, the LVDT consists of a primary coil excited at a constant frequency, a constant voltage and a secondary coil connected in reverse polarity using a differential transformer and an iron tla moving in movement with the secondary coil. A sensor that measures displacement using a change of.
또한, COD게이지는 게이지에 붙어있는 스트레인 게이지(strain gage)의 스트레인을 측정하여 이로부터 변위를 측정하는 방식이다.In addition, the COD gauge measures the strain of the strain gage attached to the gauge and measures the displacement therefrom.
그러나 상술한 변위센서들은 외부 변수와 환경에 따라 선형적인 신호를 일관되게 얻기 힘들며 그 측정범위에 한계가 있다는 문제점이 있었다.However, the above-described displacement sensors have a problem in that it is difficult to consistently obtain a linear signal according to external variables and environments, and the measurement range is limited.
따라서, 본 발명은 상술한 문제점들을 해결하기 위하여 적절한 파장을 갖는 전자기파에 의해 유도된 정상파를 도체판에 의해 외부의 영향을 배제하고 유도관의길이 방향으로 만들어 측정범위 및 한계를 극복할 수 있는 변위 측정장치를 제공하는 것을 목적으로 한다.Therefore, in order to solve the above-mentioned problems, the present invention is a displacement that can overcome the measurement range and limitations by making the standing wave induced by the electromagnetic wave having the appropriate wavelength exclude the external influence by the conductor plate and extending the length of the guide tube. It is an object to provide a measuring device.
상기 목적을 달성하기 위하여 본 발명은 외부 변수를 차단하고 정상파를 만들기 위해 도체로 만들어진 도파관과; 전자기파를 구동시키기 위한 구동부와; 상기 구동부에서 구동된 전자기파를 발진시키기 위한 전자기파 발진기와; 상기 전자기파 발진기로부터 발진된 전자기파를 도파관 내부로 입사시키는 발진용 광학센서와, 상기 도파관 내부에 형성된 정상파의 진폭을 거리변환에 따라 감지하는 수신용 광학센서와; 상기 수신용 광학센서에 의해 감지된 진폭 변화신호를 입력하여 전기신호로 변환시키는 신호처리 모듈과; 상기 신호처리모듈에서 변환된 전기적 신호를 분석하여 이동 변위를 계산하는 계산모듈을 포함하는 전자기 정상파를 이용한 변위 측정장치를 특징으로 한다.In order to achieve the above object, the present invention comprises a waveguide made of a conductor to block external variables and make standing waves; A driving unit for driving electromagnetic waves; An electromagnetic wave oscillator for oscillating electromagnetic waves driven by the driver; An oscillation optical sensor for injecting electromagnetic waves oscillated from the electromagnetic wave oscillator into a waveguide, and a reception optical sensor for sensing an amplitude of a standing wave formed in the waveguide according to a distance change; A signal processing module for inputting an amplitude change signal sensed by the receiving optical sensor and converting the signal into an electrical signal; Characterized in that the displacement measuring device using an electromagnetic standing wave including a calculation module for calculating the movement displacement by analyzing the electrical signal converted by the signal processing module.
도1은 본 발명에 따른 전자기 정상파를 이용한 변위 측정장치를 나타낸 도면.1 is a view showing a displacement measuring device using an electromagnetic standing wave according to the present invention.
<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>
11 : 도파관 12 : 전자기파 구동부11 waveguide 12 electromagnetic wave driving unit
13 : 전자기파 발진부 14 : 발신용 광학센서13: electromagnetic wave oscillator 14: transmission optical sensor
15 : 수신용 광학센서 16 : 수신용 광학센서 설치봉15: receiving optical sensor 16: receiving optical sensor mounting rod
17 : 신호처리 모듈 18 : 계산모듈17: signal processing module 18: calculation module
이하, 첨부된 도면을 참조하여 본 발명을 상세히 설명하기로 한다.Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.
도1은 본 발명에 따른 전자기 정상파를 이용한 변위측정장치를 나타낸 것으로, 상기 변위 측정장치는 외부 변수를 차단하고 정상파를 만들기 위해 도체로 만들어진 도파관(11)과; 전자기파를 구동시키기 위한 전자기파 구동부(12)와; 상기 구동부에서 구동된 전자기파를 발진시키기 위한 전자기파 발진부(13)와; 상기 전자기파 발진부(13)로부터 발진된 전자기파를 도파관(11) 내부로 입사시키는 발신용 광학센서(14)와, 상기 도파관(11) 내부에 형성된 정상파의 진폭을 거리변환에 따라감지하는 수신용 광학센서(15)와; 상기 수신용 광학센서(15)에 의해 감지된 진폭 변화신호를 입력하여 전기신호로 변환시키는 신호처리 모듈(17)과; 상기 신호처리모듈(17)에서 변환된 전기적 신호를 분석하여 이동 변위를 계산하는 계산모듈(18)로 이루어져 있다.1 shows a displacement measuring device using an electromagnetic standing wave according to the present invention, the displacement measuring device comprising: a waveguide 11 made of a conductor to block external variables and make a standing wave; An electromagnetic wave driver 12 for driving electromagnetic waves; An electromagnetic wave oscillator (13) for oscillating electromagnetic waves driven by the driver; A transmission optical sensor 14 for injecting the electromagnetic wave oscillated from the electromagnetic wave oscillator 13 into the waveguide 11, and a receiving optical sensor for sensing the amplitude of the standing wave formed in the waveguide 11 in accordance with the distance conversion 15; A signal processing module (17) for inputting an amplitude change signal sensed by the receiving optical sensor (15) to convert it into an electrical signal; It consists of a calculation module 18 for analyzing the electrical signal converted by the signal processing module 17 to calculate the movement displacement.
상기 도판관(11)은 철재로 제조되며 일측면에는 전자기파 발진기(13)로부터 입사되는 전자기파를 도파관(11) 내부로 입사하기 위한 발신용 광학센서(14)가 부착되고, 일측면에는 도파관(11) 내부에 생성된 정상파의 변위를 측정하기 위한 수신용 광학센서(15)가 수신용 광학센서 설치봉(16)에 의해 설치되어 있다.The waveguide 11 is made of steel, and one side of the waveguide 11 is attached with an optical sensor 14 for transmitting the electromagnetic wave incident from the electromagnetic wave oscillator 13 into the waveguide 11, and one side of the waveguide 11. The receiving optical sensor 15 for measuring the displacement of the standing wave generated therein is provided by the receiving optical sensor mounting rod 16.
또한, 상기 도파관의 일측으로부터 입사되는 전자기파는 사용목적에 따라 적외선과 같은 파장을 입사시킬 수도 있다. 상기 입사되는 전자기파는 도파관의 경계조건에 의해 위치와 시간에 따라 위상이나 진폭이 변하지 않는 정상파가 도파관 내부에 만들어진다. 상기 도파관 내부에 형성된 정상파는 도파관의 길이방향에 따라 진폭의 변화가 최대값과 최소값을 가지며 이때 정상파의 길이방향에 따라 삽입된 수신용 광학센서를 통해 거리변화에 따른 진폭변화를 전기신호로 감지하여 계산 모듈에서 변위로 환산된다.In addition, the electromagnetic wave incident from one side of the waveguide may be incident on a wavelength such as infrared rays depending on the purpose of use. The incident electromagnetic wave is a standing wave inside the waveguide in which the phase or amplitude does not change with position and time due to the boundary condition of the waveguide. The standing wave formed inside the waveguide has a maximum value and a minimum value of the amplitude change along the length direction of the waveguide. At this time, the amplitude change according to the distance change is detected as an electric signal through a receiving optical sensor inserted along the length direction of the standing wave. Converted to displacement in the calculation module.
한 실시예로서 파장이 1mm인 전자기파를 발신용 광학센서에서 도파관 내부로 입사시키면 0.5mm(1/2파장)마다 진폭이 최대와 최소로 변하게되고, 이때 수신용 관학센서가 도파관을 움직일 때 최대값이 2번 감지된다면 수신용 광학센서가 이동한 거리는 2mm가 된다. 이를 계산모듈로 처리하여 변위가 2mm 이동한 것을 나타내게 된다.As an example, when an electromagnetic wave having a wavelength of 1 mm is incident into the waveguide from the transmitting optical sensor, the amplitude changes to maximum and minimum every 0.5 mm (1/2 wavelength), and at this time, the maximum value when the receiving tube sensor moves the waveguide If detected twice, the distance traveled by the receiving optical sensor is 2mm. This is processed by the calculation module to indicate that the displacement has moved 2 mm.
상술한 바와 같이 본 발명의 정상파를 이용한 변위 측정장치는 도파관에 입사되어 생성된 정상파를 이용하여 거리에 따른 진폭의 변화로부터 거리를 측정할 수 있으며, 정상파는 거리에 따라 일정 진폭변화를 가지므로 선형적인 신호를 얻을 수 있으며, 전자기파에 의해 생성된 정상파를 광학센서에 의해 감지하므로 전기적인 신호로 변환시키기가 용이하여 신호 증폭기등을 설치할 필요가 없어 부품수를 줄일 수 있다. 또한 상기와 같은 이유로 특정범위와 측정 한계를 극복할 수 있다.As described above, the displacement measuring apparatus using the standing wave of the present invention can measure the distance from the change in amplitude according to the distance by using the standing wave generated by entering the waveguide, and the standing wave has a constant amplitude change according to the distance and thus is linear. It is possible to obtain a general signal and to detect the standing wave generated by the electromagnetic wave by the optical sensor, so it is easy to convert it into an electric signal. It is also possible to overcome certain ranges and measurement limits for the same reasons as above.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013123090A1 (en) * | 2012-02-13 | 2013-08-22 | California Institute Of Technology | Sensing radiation metrics through mode-pickup sensors |
| US9225069B2 (en) | 2011-10-18 | 2015-12-29 | California Institute Of Technology | Efficient active multi-drive radiator |
| US9485076B2 (en) | 2012-02-17 | 2016-11-01 | California Institute Of Technology | Dynamic polarization modulation and control |
| US9621269B2 (en) | 2012-07-26 | 2017-04-11 | California Institute Of Technology | Optically driven active radiator |
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| JPH03144306A (en) * | 1989-10-30 | 1991-06-19 | Okuma Mach Works Ltd | Length measuring device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9225069B2 (en) | 2011-10-18 | 2015-12-29 | California Institute Of Technology | Efficient active multi-drive radiator |
| US10290944B2 (en) | 2011-10-18 | 2019-05-14 | California Institute Of Technology | Efficient active multi-drive radiator |
| WO2013123090A1 (en) * | 2012-02-13 | 2013-08-22 | California Institute Of Technology | Sensing radiation metrics through mode-pickup sensors |
| US9921255B2 (en) | 2012-02-13 | 2018-03-20 | California Institute Of Technology | Sensing radiation metrics through mode-pickup sensors |
| US9485076B2 (en) | 2012-02-17 | 2016-11-01 | California Institute Of Technology | Dynamic polarization modulation and control |
| US9686070B2 (en) | 2012-02-17 | 2017-06-20 | California Institute Of Technology | Dynamic polarization modulation and control |
| US9621269B2 (en) | 2012-07-26 | 2017-04-11 | California Institute Of Technology | Optically driven active radiator |
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| KR100339698B1 (en) | 2002-06-07 |
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