SYSTEMS AND METHODS FOR INTERFERENCE MITIGATION IN PASSIVE WIRELESS SENSORS
Номер патента: US20150154432A1. Автор: Abedi Ali. Владелец: . Дата публикации: 04-06-2015.Systems and methods are disclosed that reduce or eliminate interference from non-target sensors in a wireless network. In some embodiments, the sensors contain a blocking device, such as a diode or a transistor, connected between the antenna and the transducer that blocks the cross-correlation response from being transmitted from non-target sensors while permitting an autocorrelation response from a target sensor to be transmitted. 1. A set of sensors for use in an interrogation system with reduced or eliminated interference from non-target sensors , each of the set of sensors comprising:an antenna configured to receive an interrogating signal and transmit a response signal detectable by a transceiver;a transducer with an embedded code; and (i) allows the interrogating signal to be received by the transducer of the given sensor;', '(ii) where a sensor is a target sensor, allows an autocorrelation response to the interrogating signal to be transmitted via the antenna of the given sensor; and', '(iii) where a sensor is a non-target sensor, blocks transmission of a cross-correlation response to the interrogating signal via the antenna of the given sensor., 'a blocking device positioned between the antenna and the transducer, wherein the plurality of sensors, collectively, comprise digital codes embedded in the transducers, the embedded codes allowing for separation of the sensor response signals to a given interrogating signal by creation of an autocorrelation response at a target sensor that is differentiable from cross-correlation responses from non-target sensors, and wherein the blocking device of a given sensor in the set of sensors2. The set of sensors of claim 1 , wherein at least one of the sensors comprise a metal electrode photolithographically printed onto a piezoelectric substrate.3. The set of sensors of claim 1 , wherein at least one of the sensors is a passive wireless sensor.4. (canceled)5. The set of sensors of claim 1 , wherein the set of sensors ...