Optical fiber sensor with one-key detection distance setting function

Abstract

The invention discloses an optical fiber sensor with a one-key detection distance setting function. The sensor comprises an MCU control module, a calibration control program is stored in the MCU control module; the signal input end of the control module is connected with a key module used for selecting a calibration control program, the signal output end of the MCU control module is connected witha transmitting module, and the transmitting module comprises a light source and a modulator, the transmitting module is used for emitting the modulated optical signals under the control of the MCU control module, the optical signals are transmitted to the detected object through the transmitting optical fibers to be reflected, and the reflected optical signals are transmitted to a receiving module through the receiving optical fibers, the receiving module is used for amplifying the received optical signals, the amplified optical signals are sent to an A / D module, the A / D module is used for carrying out conversion on the received optical signals and then sending the converted optical signals to the MCU control module, the MCU control module judges and recognizes the optical signals received by the MCU control module, and after the calibration is successful, the MCU control module sends a working signal to an output module, and the output module operates.

Description

technical field [0001] The invention relates to the field of optical fiber sensors, in particular to an optical fiber sensor with the function of setting the detection distance with one key. Background technique [0002] Fiber Optic Sensor (FOS: FiberOpticalSensor) is a new type of sensor based on optical fiber developed in the mid-1970s. Its basic principle is to transmit the optical signal from the light source through the optical fiber after being modulated, and the optical signal modulated by the receiver is processed by the processor to output the action signal. [0003] The current optical fiber sensor basically uses a potentiometer to adjust the detection distance. The general potentiometer has no limit function. During the operation, it is not easy to know whether to adjust to the maximum, which often causes damage to the product potentiometer, which leads to the failure of the distance adjustment function of the product. [0004] In addition, the potentiometer is ...

AI Technical Summary

Problems solved by technology

The general potentiometer has no limit function. During the operation, it is not easy to know whether it is adjusted to the maximum, which often causes damage to the product potentiometer, which leads to the failure of the distance adjustment function of the product.

[0004] In addition, the potentiometer is used to adjust the potentiometer, which is easy to damage. When it is used in a strong vibration environment, the setting distance will change; when calibrating, a supporting tool is required

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