FAST-ACTION SENSOR OF OBJECT APPROACHING Russian patent published in 1995 - IPC

FIELD: instrumentation engineering. SUBSTANCE: each generator of sensor is manufactured on inverter and logic gate 2NOT-AND. Input of inverter is connected through resistor to its output and through capacitor to its oscillatory circuit and output of inverter is linked to first input of logic 2NOT-AND gate of its generator and to second input of 2NOT-AND gate of second generator. Phase discriminator, for instance, D flip flop, is used as registering device. Its input is connected to output of inverter of first generator and its C input is linked to output of inverter of second generator and output is linked to input of power transistor key. Outputs of logic 2NOT-AND gates of each generator have their resistors and are connected to their oscillatory circuits by means of capacitive dividers. EFFECT: improved efficiency of control over assembly lines and numerically controlled machine tools. 2 dwg