Aiming at problem of present i GPS photoelectric sensor which can’t be used in dynamic posture detecting field of large size component

an array photoelectric sensor is designed and structural parameters calibration method is put forward. The sensor consists of three parts

which are sensor body

amplifier

and frontend processor. Weak laser signal received by circular array silicon photocell series of sensor body is transformed into usable voltage signal

which is amplified and conditioned; functions include signal collection

identification

calculation and transmission are completed by STM32F103ZET6 which is act as main control chip. Experimental results show that at measuring range of 10 m × 10 m

measurement precision of system is 0. 5 mm

the sensor satisfies the requirements of practical application.