摘要
采用电信号直接加载在探针上的方式激发校准信号,同时在耳机输入端接入频率计数器使得主观测听的声音信号客观定量化,提高了电子机械故障听诊器的检测准确度。通过实验验证,所提出的检测方法准确有效,与检测人员的主观感知一致。
In this paper, the electrical signals are loaded directly on the probe to stimulate the test signal. At the same time, the frequency counter is added to the headphone input to make the sound signal of the supervisor to be objective and quantitative, and to improve the accuracy of test method. The experimental results show that the proposed method is accurate and effective, consistent with the subjective perception.
出处
《上海计量测试》
2018年第1期38-39,共2页
Shanghai Measurement and Testing
关键词
机械故障
听诊器
频率范围
灵敏度
mechanical malfunction
stethoscope
frequency range
sensitivity
