| 摘要 |
PURPOSE: A method and a device for detecting a pulse signal modulated by a sinusoidal wave are provided to detect a pulse signal with modulated amplitude by the sinusoidal wave. CONSTITUTION: An analog to digital converter(110) samples the size of a pulse signal for a preset period with the preset time interval and converts the sampled signal into a plurality of digital data. An amplitude detector(120) determines the difference between the maximum value and the minimum value of the digital data. If the difference is above the preset value, the amplitude detector determines the detection of the modulated pulse signal by the sinusoidal wave. A signal output unit(130) outputs the preset digital signal based on the average of the continuous digital data among the plurality of digital data.
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