Wireless sensing system using sensing device with excitation element

A wireless sensing system, comprising:

• an RF sensor tag configured to evaluate a physical characteristic of an object, comprising:
• an RF circuit and an antenna electronically coupled to the RF circuit,
• a sensor electronically coupled to the RF circuit, and
• an excitation device configured to be activated and generate an excitation signal to change a condition,
• wherein the sensor generates a sensing signal associated with the physical characteristic of the object that varies in response to the changed condition when the excitation device is activated,
• wherein the RF sensor tag is configured to transmit a data signal associated with the sensing signal via the antenna;
• and
• an RF reader configured to transmit an interrogation power to the RF sensor tag to activate the excitation device and receive the data signal,
• wherein the RF reader is further configured to adjust the interrogation power based on the data signal.

A wireless sensing system, comprising:

• a plurality of sensing devices, each sensing device comprising:
• a wireless transceiver and an antenna electronically coupled to the wireless transceiver,
• a sensor electronically coupled to the wireless transceiver, and
• an excitation device configured to generate an excitation signal,
• wherein the sensor produces a sensing signal when the excitation signal is generated,
• wherein the sensing device is configured to transmit a data signal associated with the sensing signal via the antenna;
• and
• a reader configured to transmit activation signals to the plurality of sensing devices to activate the excitation devices and receive data signals from the plurality of sensing devices,
• wherein at least some of the plurality of sensing devices are disposed at locations different from each other,
• wherein the reader is further configured to coordinate a transmission order of activation signals to the plurality of sensing devices in a pattern related to the location of sensing devices.