基于ARM的振动传感器幅频特性测试系统研究  

An Arm Based Amplitude-Frequency Characteristic Test System for the Vibration Sensor

作　　者：严家明[1] 黄永阳[1] 侯晓伟[1] 

机构地区：[1]西北工业大学电子信息学院,西安710129

出　　处：《传感技术学报》2011年第11期1564-1568,共5页Chinese Journal of Sensors and Actuators

基　　金：航空科学基金项目(2010ZC53028)

摘　　要：设计了以ARM微处理器为核心的中央控制处理单元,以完成振动传感器幅频特性测试的系统。利用ARM上集成的数字模拟转换电路(D/A)的输出通道1产生频率可调的等幅正弦信号,输出通道2对可变增益运放电路进行控制,使得振动传感器输出信号幅度在系统工作范围内,采用模拟数字转换电路(A/D)将振动传感器输出的信号整周期采样,对信号的采样序列,运用Goertzel算法检测信号的幅度。实验结果证实了该测试系统软、硬件设计的正确性和有效性。A central control process unit with ARM as its core is designed in order to implement the amplitude-frequency characteristic test system for the vibration sensor.Output channel 1 of the D/A of the ARM can generate a frequency-adjustable sine signal,while output channel 2 control the variable gain amplifier circuit.Thus the amplitude of the vibration sensoris output signal will be in the working range.Then full period sampling is done to the output signal,using A/D of the ARM.Finally Goertzel algorithm is used to detect the amplitude of signal.The accuracy and effectiven-Ess of this system is verified by the experiment results.

关 键 词：ARM 振动传感器 幅频特性 GOERTZEL算法 

分 类 号：TP27[自动化与计算机技术—检测技术与自动化装置]