A detection device that detects existence of a radio wave transmitting/receiving body inside a specific space has a first antenna, a second antenna, a controller that controls a first detection signal and a second detection signal that the first antenna transmits to an inside of the specific space, and a disturbing signal that the second antenna transmits, a third antenna that receives a response signal transmitted to the first detection signal and the second detection signal, which have been received by the radio wave transmitting/receiving body, and a determination unit that determines an existence position of the radio wave transmitting/receiving body, based on the response signal received by the third antenna.
Detection device, detection system and detection method of radio wave transmitting/receiving body
2016-08-30
Patent
Electronic Resource
English
IPC: | G08B SIGNALLING OR CALLING SYSTEMS , Signalisier- oder Rufsysteme / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H04W WIRELESS COMMUNICATION NETWORKS , Drahtlose Kommunikationsnetze / G01S RADIO DIRECTION-FINDING , Funkpeilung / H04B TRANSMISSION , Übertragung / E05B LOCKS , Schlösser |
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