CHARACTERISTICS OF PNEUMATIC PROXIMITY SENSOR USING A SWIRLING JET

DRIVEN BY LOW SUPPLY PRESSURE

抄録

In pneumatic proximity sensors of cone jet type, a high supply pressure is usually required for obtaining high output signal. Therefore, a large amount of air is consumed in this type ofsensors. We have proposed the sensing system that can be much more improved by giving swirl to the main jet of the previously reported sensing system, which is combined a proximity sensor with laminar proportional amplifiers for the purpose of lowering supply pressure and reducingair consumptions. Consequently, we have found the new sensing system made it possible to measure the gaps with high accuracy, and to detect even very light weight objects.