BigPatents India

A wireless photosensor used for detecting status/presence of any moving/stationary object and accordingly generate output signals for controlling the different motors/valve actuators and counting the events etc. The wireless photosensor is basically comprised of a sensing and transmitting unit and a receiving and processing unit and utilizes phototransistor means to detect status/presence of any moving/stationery object and generate corresponding photosensor signals to actuate relay means for controlling different motors/valves and counting the events. The system avoids the use of huge multi-core wire for transmission of photosensor signal from sensing unit to signal processing unit (output unit) which can be located at different places i,e, near process site and control room respectively. The system would not require the expensive conduit and cable laying and therefore would be simple and cost effective and would be immune to external disturbances such as electromagnetic noise and the like.