【正文】 first channel to achieve 8channel vibration signals A / D converter。 、 MCU Control Unit DesignSystem, the choices are STC12C5410AD Type MCU as a controller, the series microcontroller is a single clock / machine cycle (1T), is patible with 8051 microcontroller core is a highspeed / low power a new generation of 8051, the new pipeline / reduced instruction set architecture , the internal integration of special reset circuit MAX810.It has about features:① enhanced 1T pipeline / RISC 8051CPU, working voltage: 5V.② Operating frequency up to 48MHz, user application space 10K, onchip 512byte RAM.③ A total of two 16bit timer / counter。 SPI synchronous asynchronous serial port, master mode / slave mode.④ clock sources: external highprecision crystal / clock, the internal R / C oscillator。 users to download the user program, the option of using the internal R / C oscillator or external crystal / clock。 room temperature, the internal R / C oscillator frequency is : ~ , high accuracy is not an option to use the internal clock。Microprocessor part of the working principle: The system uses a masterslave MCU design, the main microcontroller Uh1 as the system39。s central controller to control data acquisition from the SCM Uh2 and various I / O port for munication between and, through the USB interface Uh2 collected from the microcontroller to the data upload to the PC, for processing and analysis。 from a single charge of data collection and acquisition channel choice. This bit is designed to be distributed to the main tasks carried out simultaneously from the microcontroller to improve the system in real time. Shown in Figure 49 is a circuit diagram circuit board PCB USB Interface Module1．USB InterfaceUSB is a Universal Serial Bus (Universal Serial Bus) is referred to as the end of 1994 by Compaq, IBM, Microsoft and other panies have jointly put forward in 1995, Compaq and other panies to address the deficiencies of the traditional bus to promote a new type of serial munication standards, in recent years in the PC area has a wide range of applications, such as mobile storage devices, scanners, digital cameras, digital cameras, audio systems, monitors, input devices, etc., due to PC, is now equipped with USB interface, but also There are many manufacturers offer USB chips, peripherals,USB is now entering the golden age of its development. This provides USBbased Data Acquisition Instrument development has brought momentum.2．USB Interface Features(1) Connection easy, easy to useUSB for all USB peripherals to provide a single, easytostandard interface, thus simplifying the design of USB peripherals, but also solve the user to determine which plug socket which corresponds to the time of issue and the realization of a single data mon interface.(2) Independent power supply, reducing the cost of peripheralsCommon use of serial, parallel port devices require a separate power supply system, while the USB device is not required for the USB interface provides a builtin power supply. USB power supply to its lowvoltage devices downstream of the 5volt power supply, so the new devices do not need a dedicated AC power supply, and thus reducing the cost of these devices improve the quality price ratio.(3) Faster to meet the requirements of different peripheralSpeed of performance is one of the salient features of USB technology. From to , the transfer rate of 115 ~ 480Mbps range, faster than the serial port a full one hundred times faster than the parallel port has more than 10 times, you can adapt to different requirements of speed peripherals.(4) USB support for PNP (Plug and Play)USB supports autoconfiguration, when users connect USB peripherals to a running system, WINDOWS able to automatically detect peripherals, load the appropriate software drivers. Peripherals for the first time to connect to the system, WINDOWS driver software may prompt the user to insert the disk, in addition to install is automatic, without locate and run the installation program or reboot the system when the use of peripherals. USB also supports hotswappable, you can connect or disconnect at any time, peripherals, regardless of whether the system or peripheral boot, will not damage PC or peripheral. When the peripheral is connected, the operating system will be detected and ready to use。窗體頂端第4章 便攜式旋轉(zhuǎn)機械振動監(jiān)測系統(tǒng)設(shè)計 隨著企業(yè)設(shè)備管理的現(xiàn)代化，如何使設(shè)備，連續(xù)，可靠，安全，高效運行，以滿足現(xiàn)代企業(yè)管理的要求，顯得尤為重要。旋轉(zhuǎn)機械設(shè)備運行過程中的振動信號，產(chǎn)生了很多隱藏的信息，可以幫助人們正確判斷的旋轉(zhuǎn)機械狀態(tài)的操作過程中的各類。振動分析的理論和狀態(tài)監(jiān)測技術(shù)是不可分割的有機體?；谡駝臃治龅男D(zhuǎn)機械狀態(tài)監(jiān)測系統(tǒng)運行過程中的旋轉(zhuǎn)機械振動產(chǎn)生的核心信息，以確定旋轉(zhuǎn)機械運行或發(fā)生異常。 該系統(tǒng)的工作原理：此次收購旋轉(zhuǎn)機械振動傳感器設(shè)備運行中的振動信號的過程中，過濾后的硬件電路放大，A / D轉(zhuǎn)換，然后通過USB接口上傳數(shù)據(jù)到計算機進行處理。電腦主機可通過信號分析與處理和涂料相關(guān)的波形分析軟件的應(yīng)用程序，然后，通過相關(guān)的波形分析和頻譜分析，以確定健康狀況的數(shù)據(jù)收集器的采樣率，通道選擇等相應(yīng)的參數(shù)設(shè)置。機械和設(shè)備。 這個系統(tǒng)的設(shè)計理念是自上而下的設(shè)計，第一個設(shè)備來實現(xiàn)的總體規(guī)劃功能，然后劃分功能子模塊，實現(xiàn)系統(tǒng)的整體設(shè)計框圖如圖1所示的硬件和軟件的總的工作。 振動傳感器（傳感器）是一個集合可以產(chǎn)生旋轉(zhuǎn)機械振動信號，按一定的規(guī)律轉(zhuǎn)換成相應(yīng)的實物量或信號和其他輸出設(shè)備的振動信號，是實現(xiàn)大型旋轉(zhuǎn)機械狀態(tài)監(jiān)測如果沒有振