The Development Of Porcelain Post Insulators Fault Detection System Based On ARM Platform

With the rapid development of power industry, the safe operation of power transmission and transformation equipment is the primary task of electric power industry. The insulator as indispensable part of power transmission and transformation equipment, to research the technique of fault detection is also gradually through. Designing a detection device of ARM platform, which adopts the principle of the acoustic wave vibration fault detection based on the analysis of domestic and foreign porcelain post insulator fault detection method.Microprocessor LPC1768 as the main control chip of detector device, introduce the control principle and implementation method of hardware composition and software control. In the design and implement of flaw detector device, in addition to the basic function of device module, such as power supply module and debugging module and so on in addition to the basic function of device module, such as power supply module and debugging module and so on, also proposed an adaptive gain digital potentiometer AD5245 adjustment algorithm. Intelligent voice broadcasting function and the realization of specific frequency sequence excitation signal generation, through the SPI bus test data will be stored in the Fatfs file system on the SD card, test data to WAV format, realizes the data fast write, flaw detector device through the USB interface with PC rapid communication, the computer can operate, increasing delete, change, check on the SD card data, and made the flaw detector prototype.The verification experiment of insulator detector device, including a function module separate debug and substation field detection, through experiment and test results, the whole operation detector device is stable, the fault detection rate is high, can achieve very good for fault detection of porcelain post insulator.