SENSOR SYSTEM USING LIGHT POWER

摘要

PURPOSE: To improve the utilization efficiency of energy by storing light energy supplied to each sensor after converting the energy into electric energy and generating an optical pulse signal as the function of a measured parameter. CONSTITUTION: A system controller 22 is connected to a light source 18 and an optical receiver 20 and light energy from the light source 18 is supplied to a coupler 12 and various kinds of sensors Sn through a coupler 14 and a bus 16, stored in the capacitor 54 of a power converter 50 in each sensor Sn after the light energy is converted into a DC potential, and selectively supplied to a pulse encoder 42. A pulse signal outputted from the encoder 42 is obtained as the function of the measured value of a parameter measured by means of a transducer 40 and a reference value 2 and returned to the controller 22 and a microprocessor 32 as an optical pulse signal through the bus 16 by means of the laser diode 48 of each sensor Sn.