If the frequency converter has a monitoring division on the fault, it has a great significance for the test. The main reason is that the state fault monitoring is in the form of DC over-voltage, while DC over-current, AC over-current, and speed. The deviation is too large and the ground fault is not equal. From these aspects, it is not only the detection of hardware faults, but also the same current board fault, trigger board fault IGBT fault, pulse generator fault form is certain. The change. The frequency converter speed control technology is an important development direction of modern power transmission technology. With the development of power electronics technology, the application of microelectronic technology and modern control theory in AC speed control system, frequency conversion AC speed regulation has been Gradually replaced the past slip speed regulation, variable pole speed regulation, DC speed regulation and other speed control systems, more and more widely used in many fields of industrial production and daily life. However, due to the use environment, age and human operation Some factors on the inverter, the service life of the inverter is greatly reduced, and various faults have appeared in the use. In terms of the effects of the inverter and the development of electronic technology, there is a certain theory in modern control. The change, so the changes in the speed control system also have a great significance. An electronic clock device with a wireless network monitoring camera is characterized in that it comprises an electronic clock device body with a wireless network monitoring camera; the electronic clock device body with a wireless network monitoring camera is composed of a foot, a wireless transmission module, a It consists of a rechargeable battery, a speaker, a touch display screen, a camera, a casing, an infrared device, and a microprocessor; the feet are fixedly installed at the bottom of the rechargeable battery; a casing is fixedly installed on the top of the rechargeable battery, and the The interior is provided with a touch screen, a camera, an infrared device and a microprocessor; the microprocessor is electrically connected to the rechargeable battery through wires; the wireless transmission module, speaker, display, camera and infrared device are connected to the micro processor through wires The display screen is arranged at the bottom of the camera, and the camera is surrounded by an infrared device; the wireless transmission module is fixedly installed on both sides of the rechargeable battery, and the speakers are opened on both sides of the casing Wifi Electronic Clock,Wifi Electronic Clock hidden camera,hidden camera wifi,hidden camera wireless,spy camera wifi Jingjiang Gisen Technology Co.,Ltd , https://www.gisengroup.com