Real-time discharge detection method and device for micro electrical discharge machining of metal-ceramic functional gradient materials

The invention discloses a real-time discharge detection method and device for micro electrical discharge machining of metal-ceramic functional gradient materials, relates to a discharge detection technology for micro electrical discharge machining of metal-ceramic functional gradient materials, and aims to realize accurate and real-time detection on the discharge state. The method comprises: detecting the discharge voltage between an electrode and a workpiece; converting the discharge voltage into three digital signals respectively; and judging the discharge state of each discharge pulse according to the quantity of rising edges of three digital signals of each discharge pulse. A resistive voltage dividing module of the device is used for acquiring two-pole voltage of a discharge gap and dividing the voltage, an operational amplifier voltage dividing module further divides the voltage, a high-speed voltage comparator module converts the signal after two-stage voltage division into three digital signals, and a