RFID Threshold Accelerometer

This paper introduces a shock sensor design that requires zero power, is small, low cost, and can be remotely monitored. The sensor combines a latching accelerometer with a Radio Frequency Identification (RFID) chip. The accelerometer is a mechanical element that changes states when threshold acceleration is met. The element´s state can be relayed wirelessly to an electronic reader via the RFID chip. Multiple RFID chips can be read simultaneously, making sensor networks possible.