[Problem] To provide a wireless sensor system that can suppress power consumption of a sensor unit. [Solution] The wireless sensor system (1) is provided with a sensor unit (10) and a computation control unit (20), wherein the sensor unit (10) has a first signal generation unit (11), which generates a detection signal, a first transmission unit (12), which wirelessly transmits the detection signal, a first reception unit (13), which wirelessly receives a reflection signal and a control signal, a first detector unit (14), which generates detection data, a second detector unit (15), which detects control information, and a first control unit (16), which executes control of the sensor unit and applies modulation to the detection signal, and the computation control unit (20) has a second signal generation unit (21), which generates the control signal, a second transmission unit (22), which wirelessly transmits the control signal, a second reception unit (23), which wirelessly receives the detection signal, a third detector unit (24), which detects the detection data, a computation unit (25), which computes the movement of a subject, and a second control unit (26), which applies modulation to the control signal and generates the control information.
