基于STM32的数据采集系统英文文献.doc

Design of the Data Acquisition System Based on STM32ABSTRACTEarly detection of failures in machinery equipments is one of the most important concerns to industry. In order to monitor effective of rotating machinery, we development a micro-controller uC/OS-II system of signal acquisition system based on STM32 in this paper. we have given the whole design scheme of system and the multi-channel vibration signal in axis X, Y and Z of the rotary shaft can be acquired rapidly and display in real-time. Our system has the character of simple structure, low power consumption, miniaturization.Keywords: STM32; data acquisition; embedded system;uC/OS-II;1. 1. IntroductionThe real-time acquisition of vibration in rotating machinery can effectively predict, assess and diagnose equipment operation state, the industry gets vibration data acquisition Rapidly and analysis in real-time can monitor the rotating machinery state and guarantee the safe running of the equipment. In order to prevent failure, reduce maintenance time, improve the economic efficiency, The purpose of fault diagnosis system can detect these devices through the vibration signal acquisition of rotating machinery, and process the data acquisition, then it will make timely judgment of running state of equipment .While the data acquisition module is the core part of the fault diagnosis system [1-4].The practical application in the industrial field, is the equipment operating parameters will be acquired to monitor equipment operating state. In traditional data acquisition systems, the data from acquisition card are generally send into the computer, and specific software will be developed for the data acquisition. The main contribution of this paper has designed the STM32 platform with ARM technology, that has become a traditional mainstream technology in embedded systems, and the collecting data toward the direction of high real-time, multi-parameter, high-precision, while data storage become large capacity, more miniaturization and portable, and the development of multicommunication mode and long-distance for data transmission. So as to meet the actual acquisition system multitasking requirements, this article has designed based on STM32 micro-controller uC/OS-II system of signal acquisition system. Therefore, in order to meet the actual acquisition system multitask requirements, this novelty of this article has designed a signal acquisition system in micro-controller uC/OS-II based on STM32.2.Architecture of data acquisition systemData acquisition as key technology for monitoring equipment, recently a lot of work has been done on it. An embedded parallel data acquisition system based on FPGA is Optimized designed which will make it reasonable to divide and allocate high-speed and low-speed A/D [5]. Instead, it has use a high-speed A/Dconverter and Stratix II series of FPGA for data collection and processing, in which the main contribution is used of the Compact Peripheral Component Interconnect, the system has the characters of modularization, sturdiness and scalability [6].But remote control will be needed in Special Conditions, this paper introduce the embedded operating system platform based on Windows CE and uC/OS-II to design a remote acquisition and control system with the GPRS wireless technology [7-8].In order to achieve the data sharing of multi-user, it has build the embedded dynamic website for data acquisition management and dissemination with the ARM9 and Linux operation system [9].A data collection terminal devices is designed based on ARM7 microprocessor LPC2290 and embedded real-time operating system uC/OS-II to solve the real-time acquisition of multichannel small signal and multi-channel transmission[10].On the other hands, two parallel DSP-based system dedicated to the data acquisition on rotating machines, and the inner signal conditioner is used to adapt the sensor output to the input range of the acquisition, and then signal post-processing by the design software, while the most frequently structure is to use DAS and FPGA-based, and such programs are also dependent on the DAS cost.In order to meet market requirements of low power consumption, low cost, and mobility, Fig.1 in this paper presents the design overall structure diagram of data acquisition system. Through SPI interface, the system gets the data collection with three axis acceleration sensor into the STM32 controller of inner A/D conversion module with 12-bit, this process is non-interfering parallel acquisition. Our system uses 240x400 LCD and touch screen module real-time to display the collected data in real time.2.1. STM32 micro-controllerA 32 bit RISC STM32F103VET6, used as the processor in our system, compared with similar products, the STM32F103VET6 work at 72MHZ, with characters of strong performance and low power consumption, real-time and low-cost. The processor includes: 512K FLASH, 64K SRAM, and it will communicate by using five ser。