The invention comprises an environmental sensor that measures a value of an environmental parameter of the ambient environment of the biometric measurement system.
本发明包括环境传感器，其测量生物统计测量系统的周围环境的环境参数值。
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Real modal parameter identification has been used and 13 modes are identified. The obtained modes are compared with the results from steady exciting, ambient vibration and FEM calculation.
Discovery after study, the electric parameter change reason is the dirt adhered at the producing on the surface of potentiometer inner basic chip absorbs wet in high thermal wet ambient.