Impact Logger

Abstract

An impact logger includes an acceleration sensor, a circuit element including a clocking circuit that generates time data, a sensor circuit that processes an output signal of the acceleration sensor, and a memory circuit that stores processing data processed by the sensor circuit and the time data in association with each other, and a package that accommodates the acceleration sensor and the circuit element, and the impact logger has a mass of less than 20 g. When a mass of an impact measurement target is m1 and the mass is m2, a relationship of m2≤( 1/50)×m1 is satisfied.

Dependencies are inferred from the claim text.