转换器

The design of this dissertation begins with the definition of audience data structure based on considering the embedded developing environment features. The dissertation uses the STi5518 chip by ST Microtones to collect audience data, and then the SI analysis and OSD interactive function are used to gain the user watching information. Then collect audience data in EEPROM of STB, use STB and serial to transmit the data, then use the RS232 serial port and RJ-45 converter to realize the data Return of Serial to Ethernet, in the process of data Return it completes the conversion of data format.

本设计首先在嵌入式环境的前提下，在用户数据采集和回传工作中采用了ST Microtones公司提供的STi5518芯片作为机顶盒主芯片，根据收视率调查需要制定出用户的收视信息数据结构，并结合数字电视业务信息分析以及机顶盒的屏幕显示互动功能，对用户的收视情况进行记录；然后把记录的数据存储到机顶盒的EEPROM中，并利用机顶盒串口输出数据，再利用RS232串口与RJ-45转换器实现串口转以太网的数据回传，在回传过程中完成了数据格式的转换。

The output is measured by a voltmeter or detector, such as precision voltmeters, ac measurement standards, ac/dc transfer standards, or thermal voltage converters, fitting them to a wide variety of metrology applications.

输出电压的测量或检测器，如精密电压表，交流计量标准，交流/直流转换标准，或热电压转换器，适合他们的各种计量应用。

The crosstalk reducing unit (14) has a sample rate converter (19) coupled to a synchronous clock for converting the output of the subtractor to the data signal (8) at a synchronous sample rate.

所述串扰降低单元(14)具有与同步时钟耦合的采样率转换器(19)，用于以同步采样率把所述减法器的输出转换为数据信号(8)。

An oxidation catalytic converter is mainly used for catalytic conversion of unburned THC and CO in the exhaust gas, and its primary principle is to reduce the hazardous materials by farther oxidating of the unburned intermediate reactive products in the exhaust gas.

氧化型催化转换器主要用来催化转换排气成分中的THC和CO，其主要工作原理是进一步氧化排气成分中的未完全燃烧的中间产物，以降低排气成分中的有害物质。但是，其工作的热力学环境将大大影响工作性能和效率。

The grid-connected system has two supply sources: wind power and city supply.

在电力转换器与负载间加入自动转换开关。

The polarization transformer is also embodied in a polarization-maintaining optical wave guide and allows for infinite polarization transformations.

偏振转换器同样构成为保持偏振的光波电缆和允许无限的偏振转换。

Basing on TI Corporation's DSP chips TMS320LF2407A as high-voltage protection system CPU in this article, AC analog which comes from high voltage power grid is converted to digital value which DSP can process by 14-bit A/D converter MAX125, monitoring the entire status of the high-voltage power grid in real-time, tripping off by controlling external relay quickly when abnormal operation happened, turn off the power grid to protect the power grid and other electrical equipment.

本文是基于TI公司的TMS320LF2407A型DSP芯片作为高压电继电保护系统的中央处理器。通过MAX125的14位A/D转换器采集高压电网中交流模拟量来转换为供DSP处理的数字量，从而进行数据分析处理，对整个高压电网的运行状况进行实时监控，当遇到不良运转时控制外部继电器迅速跳闸，切断电网，从而保护整个电网及其他用电设备。

In this design, hardware circuit adopts liquid crystal screen and program sensor keyboard as interactive interface, 96 single-chip as chief controller, analog multi-circuit switch as transmission signal. To improve conversion accuracy, I also bond an analog to digital converter%26mdash;AD1674, so the programs mainly contain the display program design of the LCD module, the key-board control program and cyclical monitoring of various parameters and so on.

本文的硬件电路采用液晶显示屏和触摸式键盘作为人机交互界面，用80C196KB作为主控制器，用模拟多路开关传输信号，并且为了提高转换精度，外接了模数转换器AD1674，所以本设计的程序主要包括液晶显示程序、键盘管理程序、控制巡回采样等模块。

ABF Value Converter is an application for measurement units conversion.

亚洲债券基金的价值转换器是一个应用计量单位的转换。

Fluxgate sensor inducts the environment magnetic field, outputs the compass course signal to the CPU system. This signal then is transformed into digital signal. CPU processes it and then gains compass course. When use rotary mathod to measure the deviations, CPU first collects timed the compass course come from the Fluxgate sensor, then calculates automatically their deviations and the correspondent coefficients. Based on all this, CPU can calculates out the real-time magnetic course or the real-time ture course, then sents them to display on the digital displayer.

本系统采用磁通门传感器来直接敏感合成磁场，输出罗航向直流感应电压信号送A/D转换器进行转换，并经CPU计算处理得到罗航向度数值，以及利用&旋回法&测定自差时，CPU按照船舶旋回的角速度定时地采集罗航向度数值，在此基础上CPU自动地计算出各采集罗航向上的白差，再由此计算出自差系数，并实时地解算出磁航向值或真航向值，送数码显示器显示。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。