USB OTG-BASED PORTABLE VOLTAGE MEASURING DEVICE AND VOLTAGE MEASURING METHOD USING SAME

摘要

The present invention relates to an USB OTG-based portable voltage measuring device and a voltage measuring method using the same, capable of performing a function of an oscilloscope by using a smart device. The present invention includes: a channel part receiving an electric signal of a voltage variation by time from a terminal of a measurement object; a filter part removing a high frequency noise of a signal waveform, received from the channel part, and passing a low frequency signal; an AD conversion part amplifying the low frequency signal, passed through the filter part, and then sampling an analogue signal at a predetermined Ms/s speed to convert the signal into a digital signal; a buffer part sequentially and temporarily storing digital signal data converted in the AD conversion part; a data parsing part sequentially loading the data, stored in the buffer part, to inspect the data in accordance with predetermined algorithm; and a controller part receiving the data, verified through the data parsing part, and then transmitting the data to the smart device, connected to enable point-to-point communication of universal serial bus standards, in order to display the voltage waveform by time.;COPYRIGHT KIPO 2016