Research And Implementation On Condition Monitoring System For Mechanical Transmission Eequipment Base On ARM

With the development of mechanical transmission technology machinery and equipment became more precision, complexity, and more automation, mechanical transmission equipment condition monitoring and fault diagnosis technology has been paid more and more attention. The torque, torsional vibration, and so on as the basic load forms of the various mechanical transmission shaft is an important indicator of power output parameters in mechanical transmission equipment operation. The traditional condition monitoring system has many shortcomings, such as high cost, maintainability and scalability poor, it can not complete the measurement in the special measurement environment such as the closed box, high temperature and rotating parts. It is difficult to study some important mechanical transmission equipment condition monitoring and analysis for researchers. In recent years, embedded systems technology and modern electronic technology developing rapidly, integrated technology improving greatly, and power consumption reducing, that affords the conditions for the applications of the embedded systems in the mechanical equipment condition monitoring field.This paper researches the design and implementation of the mechanical transmission equipment condition monitoring system based on ARM. On the analyzing the inadequate of the traditional mechanical transmission equipment condition monitoring system, according to the principle of state monitoring system, we propose to use embedded technology and modern electronic technology to implement the mechanical transmission equipment monitoring system, which has high integration and can adapt to the special environment. It use 32-bit microcontroller as a core device, completing the AD sampling analog signals, data storage management, data transmission and display by the control of peripheral devices. The hardware design uses LPC1768 based on Cortex-M3 structure to control the system, uses A/D to sampling. There are two ways for data management. One way is storing data to NAND Flash locally, and then uploading to the PC with USB, The other way is wireless transmitting by the RF chip, and then communicating to the PC with USB. Power conversions are DC-DC converters, and we use dynamic power management methods to implement the minimum energy cost. In the software design, embedded operating system uC/OS-II is the system software platform, implementing the function of each module by the control of the software task.According to the system design solution, we design and implement the system, and test in the actual mechanical transmission equipment. After testing, this system has functions as follow: gathering the multiple analog sensor signal, the 16bit and 12bit sampling accuracy, high sampling frequency up to 10KHz, storing a large amount of data locally, communicating between the system and the PC with USB, wireless transmitting data to external receiving data device by RF chips, PC interface friendly and data display and storage easy. System test results show that the system has strong reliability, flexibility and versatility and it can adapt to the harsh test environment.Finally, we have a summary of the work and outlook. With further work, we hope to implement mature engineering applications, help researchers study and analyze the operational status of mechanical transmission equipment, and research the new method of mechanical transmission equipment condition monitoring and fault diagnosis.