采样器

This high voltage electrostatic precipitation controller has 7 channels of analog input,2 channels of analog output, 12 digital inputs and 16 digital outputs. The analog input includes primary current, secondary current, primary voltage, secondary voltage, etc. Controller uses MAX 187 as the A/D converter, which ensure the sampling speed and the conversion precision in the same time. The processor unit is RCM2250 module. Rabit 2000 processor, a 128K SRAM and a 256K Flash Rom are integrated in RCM2250, which improves the performance of pricipitation controller. MAX504 is used to produce the 4~20mA current output.

模拟量输入采集的信号有升压变压器一次电流、一次电压、二次电流、二次电压等，采用12位逐次比较式A/D转换器MAX187，兼顾采样速率和转换精度；中央处理单元采用以8位嵌入式处理器Rabbit2000为基础的RCM2250模块，外扩128KSRAM和256K Flash ROM，内部资源丰富，提高了控制器的整体性能；模拟量输出采用内带基准源的10位电压输出数模转换器MAX504，实现了标准4～20mA电流信号输出；控制器通过控制算法在相应开关量点上输出可控硅的触发脉冲。

This process described the frequency changer - sensor - electric motor test system mathematical model, and in the platform which the microcomputer, the high speed sampling card, hypothesized instrument software constitutes, has realized to the frequency changer power supply electric motor test.

此次过程描述了变频器-传感器-电动机测试系统的数学模型，并在微机、高速采样卡、虚拟仪器软件构成的平台上，实现了对变频器供电的电动机的测试。

Their advantages and disadvantages are discussed and a full digital asynchronous sampling method is devised to meet the integrating need by the decoder. Based on this method, we designed a hardware project, which can make the decoder independent from the sampling clock PLL .

针对解码器高集成化的需求，设计了全数字的异步采样方案；在此基础上提出了一种适合视频解码器的硬件实现方法，该方法采用全数字实现，摆脱了对片外锁相环的依赖。

And this method has been successfully implemented in the real time control system by using a specially devised calculation method with variable integration step.

并通过独特的变积分步长计算方法解决了传感器采样方式与变量积分方式间的矛盾，保证了ECU变量更新能与发动机工作同步，使闭环状态观察器和非线性油膜补偿器在实时控制系统中得以实现。

The dynamiccomparators which are lack of kickback noise keep the a...

回踢噪声很小的动态比较器的应用使模数转换器在高速采样时钟下能保持各级输出的模拟信号的稳定。

Our main products are : Swiss Kuhner Shakers \Swiss Integra Biosciences Products (Cell Spiner, Cell Roller, Automatic Media Preparator, Automatic Petri dish filler, Intelligent multi purpose dosing pumps, Safety vacuum aspirator, Safety burner, Electrical Pipet) \Swiss TPP Cell culture accessories\Autoclaves from Germany\PBI International Air Sampler from Italy and

主要产品有：瑞士阿道夫科耐摇床、IBS细胞培养设备(细胞培养滚瓶机、细胞培养转瓶机、全自动培养基分装机、自动分装泵、火焰灭菌器、真空吸液仪、电转移液枪等等)）、TPP细胞培养器材、德国SYSTEC高压蒸汽灭菌器、意大利空气采样仪等。。。。。。

To reduce the area of the layout,we use one-stage OP-AMP in the ROIC,and the sample and hold circuit shared by pixels in a column is also applied instead of sample and hold circuit in every pixel.

本设计采用电容反馈互阻抗放大器结构作为输入级，列共用方式的采样保持电路，源级跟随器作为输出级，用移位寄存器来控制行、列选通并控制电路工作的时序。

The simulation of the bandgap reference using ideal resistents shows that It's precision is 16.6 ppm.The dynamic range of the sensor is increased by 2~N using multi-sample. The FPN is cancelled using CDS. The pipeline ADC has the good tradeoffs of resolution, sample rate and area.

像素阵列的扫描方式使用多采样技术可以提高传感器动态范围2~N倍，相关二次采样技术消除了像素单元之间的固定模式噪声，使用流水线式的模数转换器可以实现好的分辨率、速度和面积等的折衷。

This board uses two chips, six channels A/D converter and phase locking synchronous technology for collecting three-phase voltage and current signals in timing and equal-time cycle sampling ways, and the gained data make more reasonable for power quality norm analysis.

并采用了两片六通道高速A/D转换器和运用了锁相同步技术，对三相电压和电流信号能进行定时采样和等间隔采样，这样得到的数据对于下一步电能质量指标进行分析更为合理。

This board has proper strategy to get the data for power quality analysis, because it uses two chip, six channel analog-to-digital converter and phase locking synchronous technology, which make it able to collect three phase electric voltage and electric current signals in timing sampling and equal-time cycle sampling ways.

并采用了两片六通道高速A/D转换器和运用了锁相同步技术，对三相电压和电流信号能进行定时采样和等间隔采样，这样得到的数据对于下一步电能质量指标进行分析更为合理。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。