Patent ID: 8638253

Claim:
A radar sensor device comprising: a processor; a memory coupled to the processor; power circuitry configured to receive a supply of power from at least one battery; a radar signal transmitter configured to transmit radar signals; a radar signal receiver configured to receive reflected radar signals; the processor configured to compute radar data from received reflected radar signals, computed radar data including a distance from an external object, and a relative velocity of the external object; radio circuitry configured to wirelessly transmit radar data to at least one peer radar sensor device functioning as a network node; a vibration mechanism; and the memory storing instructions that, when executed by the processor, cause the radar sensor device to perform the operations of: powering-on the radar sensor device in response to receiving an input to power-on the radar sensor device; indicating that the radar sensor device has been successfully powered-on by causing a first vibration via the vibration mechanism; and indicating status of a wireless network connection to a given radar sensor network by causing a second vibration via the vibration mechanism.