Shock Logger

Abstract

A shock logger includes an acceleration sensor; a circuit element including a timing circuit that generates time data, a sensor circuit that processes a signal output from the acceleration sensor, and a memory circuit that stores process data processed by the sensor circuit and the time data in relation to each other; and a package that houses the acceleration sensor and the circuit element. The shock logger has a natural vibration frequency less than 33 Hz or more than 100 Hz. The natural vibration frequency is preferably less than 25 Hz or more than 1 kHz or is more preferably less than 20 Hz or more than 10 kHz.

Dependencies are inferred from the claim text.