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analog quantity
    A method to Evaluate the Accuracy of Data Acquisition System on Linear Analog Quantity
    线性模拟量数据采集系统准确度的一种评价方法
    Interface channel of analog quantity for SS8 electric locomotive
    SS_8 电力机车模拟量接口通道
    The Application of the Way for PLC to Treat Analog Quantity in the Detecting of the Machine Tool Parameter
    PLC处理模拟量的方法在机床参数检测中的应用
    1.Counting-Type Analog Quantity and Development of Mutli-Channel Telementering Computer System for Dynamic Informations about Human Vascular Wall 2.Development of Opened Instrument for Generating and Measuring Physiological Signal
    [1]计数型模拟量及人体血管壁动态信息多道遥测电脑系统的研制 [2]开放式生理信号产生及测量仪的研制
    In a word, this paper realizes several functions as follows: 8-channel analog quantity acquisition, 2-channel digital quantities output, 8-channel switching quantities input and output, RS-232 communication, Ethernet data transmission with the embedded platform as server, the U-disk's data transmission on the platform without PC.
    本论文最终能够实现下面几个功能:8路模拟量的采集,2路数模转换输出控制,8路开关量的输入输出,RS-232的串口通讯,以及以嵌入式板卡为服务器的以太网数据传输和U盘在无PC机板卡上的数据传输。
    The other analog quantity is controlled by the intelligence module to input or output. This system choose intelligent module ADAM4017 (analog input module)and ADAM4024(analog output module).
    其它模拟量由智能化模拟量输入输出模块控制,本系统采用的是研华的智能模块ADAM4017(模拟量输入模块)和ADAM4024(模拟量输出模块)。
    Combining with the practical applications, the whole servo driving system is controlled by the form of analog quantity pulse command.
    结合实际的 应用,采用模拟量脉冲指令的形式对整个伺服驱动系统加以控制。
    The controller is composed of several circuits including MCU system,keyboard and display system, digital quantity input, analog quantity (A/D conversion) input, control output and series communication interface.
    该控制器由MCU系统电路、键盘与显示系统电路、数字量输入电路、模拟量(A/D转换)输入电路、控制输出电路、串行通讯接口电路组成。
    The PWM signal is produced through the program, after the signal was filtered by RC and delayed, the voltage of negative terminal was compared with the voltage value of analog quantity for positive terminal by operational amplifier LM324 to get output value.
    软件产生脉宽调制(PWM)信号,经RC滤波并延时后,LM324对输入负端电压与正端的模拟量电压值进行比较以得到输出。
    Using PIC18F258 as a processor of base-station, automatic identification of analog quantity and switching value can be realized and sensor's signals can be acquired in a high precision with the maximal error of 0.02%, thus not only guaranteeing real-time property but also remarkably improving the system flexibility and function extensibility.
    本文用单片机PIC18F258作监控分站的处理器,既实现了监控分站模拟量和开关量信号的自动识别,又可对传感器信号的高精度采集,采集误差最大为0.02%,不仅保证了实时性,同时也大大提高了系统的灵活性和功能的可扩展性。
    It is adopt inertial method to strain wave to input to analog quantity, raise the precision that A/D changes, have improve systematic anti-interference ability, and made better control result in practical application.
    对模拟量输入采用惯性滤波的方法,提高了A/D转换精度和系统的抗干扰能力,在实际应用中取得了较好的控制效果。
    The rotational speed PID of the electrical machinery was controlled by control order of PID offered with S7-200, combined import / export the modules to realize the control of analog quantity.
    对电机转速PID控制,以S7-200提供的PID控制功能指令,与模拟量输入/输出模块结合实现。
    Counting-type Analog Quantity and Development of Mutli-channel Telemetering Computer System for Dynamic Information about Human Vascular Wall
    计数型模拟量及人体血管壁动态信息多道遥测电脑系统的研制
    In addition, the analog quantity and switch quantity control of the former system is replaced by the digital quantity control, which can improve precision of production and reliability of the system.
    另外,系统采用基于SCI串行通信总线的数字控制,代替原系统中的模拟量和开关量控制,能够有效提高系统的生产精度,改善系统的可靠性。
    Because DSP has analog-digital conversion interface of 10 bit, this type of interface act as sampling of analog quantity.
    由于数字信号处理器具有10位的模拟——数字转换功能的接口,本文使用它的模数转换接口作为模拟量的采样。
    show corresponding supervision interface right, including basic info of device and configuration, digital quantity displaying, curve of analog quantity displaying;
    页面右边为相应的监控画面,包括设备的基本信息和组态信息、开关量显示和模拟量的曲线显示等画面;
    In a word, it magnifies and filters the analog quantity of the smart home and procedure control systems and then transits it into digital quantity through A/D conversion and then finish the data processing.
    简单说来,它将智能家居、过程控制系统中的各种模拟量进行放大、滤波,然后经过A/D转换变成数字量,最后再进行数据处理。
    Eight analog quantity modules EM235 are used as eight routes data collection and flux control.
    扩展8个模拟量组合模块EM235对应8路管道进行数据采集和对流量的控制。
    At the present time, most SPM in China only stay on the level of analog quantity control, which is the intrinsic reason that the instrument can't be further refreshed.
    目前,国内SPM仪器大多还停留在模拟量控制的水平,仪器本身无法在本质上做进一步的更新。
    Data record unit complete data acquisition, which records analog quantity data, parallel and serial digital data, parallel and serial graphic data from the signal source to CF card.
    数据记录单元完成数据采集,把信号源发送的模拟量数据、并行和串行数字量数据、并行和串行图形数据记录到存储设备的CF卡上。
 

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