System design of ARM-based handset vibration analyzer

With application and popularity of vibration monitoring and fault diagnosis technology, it is also raising that performance requirement of measurement and analysis instruments for vibration. In order to enhance the current performance and function of portable vibration analyzer, using the technique of embedded system, new portable measurement and analysis instruments for vibration based on ARM technology has developed in this paper. Instruments select S3C2440 based on ARM9 technology for the CPU and analog to digital converter ADS1274 that is Delta-Sigma type, synchronous, high-speed and has 24-bit conversion accuracy, design of Instrument system hardware circuit. To meet vibration analysis needs of a large number of graphics and curves show, devices equipped with high-resolution color TFT -LCD touch screen LS037V7DW03, resolution up to 640 times 480, but the size is only 3.7 inches. On this basis, developed embedded operating system hardware drivers based on Windows CE5.0, using fast interruption solve high-speed A/D acquisition with a large number of serial data transmissions between SPI. Testing showed that frequency of signal acquisition system has been the largest sampling frequency, sampling the results is accurate and reliable.