Design of a new type three-axis acceleration sensor

• Published in: International Technology and Innovation Conference 2006 (ITIC 2006) pp. 2129 - 2133
• Main Authors: Zhang Xin, Fei Yetai
• Format: Conference Proceeding
• Language: English
• Published: Stevenage Inst. of Eng. and Technol 2006
• Subjects: Design; Instrumentation; Measurement and control instrumentation industry; Numerical analysis; Sensing devices and transducers; Velocity, acceleration and rotation measurement; strain gauge; FEM simulation; three-axis full shearing strain acceleration sensor design; finite element analysis; design engineering; rigidity; beams; finite element method; strain gauges; strain sensors; elastic body; Wheatstone bridges; accelerometers; thin cylinder; sensing element; inertial mass
• ISBN: 0863416969; 9780863416965
• DOI: 10.1049/cp:20061124

A new type of three-axis full shearing strain acceleration sensor has been developed. It uses strain gauge as sensing element for the detection of acceleration. The sensor consists of an elastic body and inertial mass. The elastic body is a thin cylinder on which four holes are opened evenly in two levels. There are three Wheatstone bridges on the beams to detect the acceleration in three directions. The sensor was designed from the results of finite element method (FEM) simulation. As indicated by the calculations and experiments, this sensor is not only of high sensitivity and adequate rigidity in the three directions, but also of fairly small cross sensitivities and low hysteresis.