Author(s)

J.M. Pauschke, S. Lang & D. Ryan

Abstract

A method for the direct, real-time recording of ground displacements during earthquakes J.M. Pauschke", S. Lang\ D. Ryan^ ^Department of Mechanical Engineering ^Department of Electrical Engineering, Northern ABSTRACT This paper presents the development of an integration circuit which can be used in conjunction with existing accelerometers to directly record ground motion acceleration, velocity, and displacement time histories in real-time. Because this circuit can compute the time histories on-line, this improves the current off-line processing required to obtain the ground motion time histories. The real-time acceleration processing (RAP) circuit consists of two integrators which can process the ground acceleration data in real-time to obtain velocity and displacement. Results verifying the accuracy of the displacements generated by the RAP circuit, when used with an accelerometer, are compared to the output from a linear variable differential transformer (LVDT).

Keywords