CN206223103U - Fiber grating modulation /demodulation controls circuit - Google Patents
Fiber grating modulation /demodulation controls circuit Download PDFInfo
- Publication number
- CN206223103U CN206223103U CN201621344667.4U CN201621344667U CN206223103U CN 206223103 U CN206223103 U CN 206223103U CN 201621344667 U CN201621344667 U CN 201621344667U CN 206223103 U CN206223103 U CN 206223103U
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- China
- Prior art keywords
- grating
- signal
- strain gauge
- programmable logic
- logic controller
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- Expired - Fee Related
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- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model discloses fiber grating modulation /demodulation control circuit, including measurement grating, reference grating, photodiode, micro-displacement driver, resistance strain gauge, Programmable Logic Controller, the reference grating, micro-displacement driver and resistance strain gauge are brought into close contact, measurement grating, measured strain is converted into the wavelength signals of light；Reference grating, receives the optical wavelength signal of measurement grating transmission, and the optical wavelength signal is sent into photodiode；Photodiode, receives the optical wavelength signal that reference grating module sends, and be converted into on-off model feeding Programmable Logic Controller；Micro-displacement driver, drives the dilatability of reference grating, after the signal of Programmable Logic Controller is received, stopping action, and subsequent signal is to resistance strain gauge.The utility model can utilize the advantage of fiber-optic grating sensor without detecting the instrument of optical wavelength, so that fiber-optic grating sensor simple structure, with low cost, stable performance, market application foreground is very wide.
Description
Technical field
The utility model relates to a kind of fiber grating modulation /demodulation control circuit.
Background technology
Fiber-optic grating sensor is with its high precision, long transmission distance, to adapt to inflammable and explosive and strong magnetic field circumstance etc. excellent
Gesture has obtained being widely recognized as scientific research personnel, but its optical wavelength demodulation instrument costly, since it is desired that the detection of optical wavelength
Equipment is more accurate, and to cause Bragg grating sensor overall cost higher.
So that a modulation /demodulation control circuit, not only effectively utilizes the advantage of fiber-optic grating sensor to measure micro- answering
Become, and it is cheap, and precision is higher.
The content of the invention
The utility model is directed to existing deficiency, devises a kind of fiber grating modulation /demodulation control circuit, can not only have
The advantage measurement microstrain of the sharp fiber-optic grating sensor of effect, and it is cheap, and precision is higher.The utility model uses technical side
Case is：
Fiber grating modulation /demodulation controls circuit, including measurement grating, reference grating, photodiode, Micro-displacement Driving
Device, resistance strain gauge, Programmable Logic Controller, the reference grating, micro-displacement driver and resistance strain gauge are brought into close contact,
Measurement grating, measured strain is converted into the wavelength signals of light；Reference grating, receives measurement grating transmission
Optical wavelength signal, and the optical wavelength signal is sent to photodiode；Photodiode, receives reference grating module and transmitted
The optical wavelength signal for coming, and it is converted into on-off model feeding Programmable Logic Controller；Micro-displacement driver, drives reference grating
Dilatability, after the signal of Programmable Logic Controller is received, stopping action, subsequent signal is to resistance strain gauge；Resistance strain gauge,
The displacement signal of fine motion Drive Module is received, Programmable Logic Controller is given by displacement signal, Programmable Logic Controller is received photosensitive
The on-off model that diode sends, drives fine motion Drive Module to be stopped, and receives resistance strain gauge signal, and record is current
The current numerical value of resistance strain gauge.
Photodiode accesses the On-off signal end of Programmable Logic Controller；Resistance strain gauge is linked into Programmable Logic Controller
Analog input port；The voltage analog output port of Programmable Logic Controller drives micro-displacement driver.
Also include touch-screen, the touch-screen is connected by way of RS485 with Programmable Logic Controller.
The beneficial effects of the utility model：The utility model can utilize the advantage of fiber-optic grating sensor without inspection
The instrument of light-metering wavelength, so that fiber-optic grating sensor simple structure, with low cost, stable performance, market application foreground ten
Divide wide.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Specific embodiment
The utility model is specifically introduced below in conjunction with drawings and Examples as follows：
Fiber grating modulation /demodulation controls circuit, including measurement grating, reference grating, photodiode, Micro-displacement Driving
Device, resistance strain gauge, Programmable Logic Controller, the reference grating, micro-displacement driver and resistance strain gauge are brought into close contact,
Measurement grating, measured strain is converted into the wavelength signals of light；Reference grating, receives measurement grating transmission
Optical wavelength signal, and the optical wavelength signal is sent to photodiode；Photodiode, receives reference grating module and transmitted
The optical wavelength signal for coming, and it is converted into on-off model feeding Programmable Logic Controller；Micro-displacement driver, drives reference grating
Dilatability, after the signal of Programmable Logic Controller is received, stopping action, subsequent signal is to resistance strain gauge；Resistance strain gauge,
The displacement signal of fine motion Drive Module is received, Programmable Logic Controller is given by displacement signal, Programmable Logic Controller is received photosensitive
The on-off model that diode sends, drives fine motion Drive Module to be stopped, and receives resistance strain gauge signal, and record is current
The current numerical value of resistance strain gauge.
Photodiode accesses the On-off signal end of Programmable Logic Controller；Resistance strain gauge is linked into Programmable Logic Controller
Analog input port；The voltage analog output port of Programmable Logic Controller drives micro-displacement driver.
Also include touch-screen, the touch-screen is connected by way of RS485 with Programmable Logic Controller.
Below the utility model is disclosed with preferred embodiment, so itself and be not used to limit the utility model, it is all to take
The technical scheme that the form of equivalent or equivalent transformation is obtained, all falls within protection domain of the present utility model.
Claims (3)
1. fiber grating modulation /demodulation control circuit, including measurement grating, reference grating, photodiode, micro-displacement driver,
Resistance strain gauge, Programmable Logic Controller, it is characterised in that the reference grating, micro-displacement driver and resistance strain gauge are tight
Laminating,
Measurement grating, measured strain is converted into the wavelength signals of light；
Reference grating, receives the optical wavelength signal of measurement grating transmission, and the optical wavelength signal is sent into photodiode；
Photodiode, receives the optical wavelength signal that sends of reference grating module, and be converted into on-off model feeding can
Programmable controller；
Micro-displacement driver, drives the dilatability of reference grating, after the signal of Programmable Logic Controller is received, stopping action,
Subsequent signal is to resistance strain gauge；
Resistance strain gauge, receives the displacement signal of fine motion Drive Module, and Programmable Logic Controller is given by displacement signal；
Programmable Logic Controller, receives the on-off model that photodiode sends, and drives fine motion Drive Module to be stopped, and connects
Resistance strain gauge signal is received, the current numerical value of current resistance strain gauge is recorded.
2. fiber grating modulation /demodulation according to claim 1 controls circuit, it is characterised in that photodiode is accessed can
The On-off signal end of programmable controller；Resistance strain gauge is linked into the analog input port of Programmable Logic Controller；It is programmable
The voltage analog output port of controller drives micro-displacement driver.
3. fiber grating modulation /demodulation according to claim 1 controls circuit, it is characterised in that also including touch-screen, institute
Touch-screen is stated to be connected with Programmable Logic Controller by way of RS485.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621344667.4U CN206223103U (en) | 2016-12-09 | 2016-12-09 | Fiber grating modulation /demodulation controls circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621344667.4U CN206223103U (en) | 2016-12-09 | 2016-12-09 | Fiber grating modulation /demodulation controls circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206223103U true CN206223103U (en) | 2017-06-06 |
Family
ID=58785056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621344667.4U Expired - Fee Related CN206223103U (en) | 2016-12-09 | 2016-12-09 | Fiber grating modulation /demodulation controls circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206223103U (en) |
-
2016
- 2016-12-09 CN CN201621344667.4U patent/CN206223103U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170606 Termination date: 20181209 |