查询词典 A.D.

One of the key technical difficulties and one of the means to achieve high-speed A / D converter.

其中的关键和技术难点之一就是要实现高速率的A/D转换。

A/D converter is very important in industry measure and control.

A/D转换器件在工业测量和控制系统中占有很重要的地位。

The graduation design is based on single chip microcomputer intelligent design of a power source, hardware design is the main task of the circuit design, battery, the three groups of different size power design, system design, manostat ADC0809 adc design, display design, the watchdog circuit module design, 3-8 decoder circuit design, AT89C51 basic circuit design, 74LS161 prescaler design and auxiliary circuit design, Software design task is: initialize program design, and key process design, charge control program design, A/D conversion program design, over-current protection program design, display design program.

本次毕业设计注意是设计一个基于单片机的智能电源，硬件设计的主要任务是：蓄电池充电电路的设计、三组不同大小的电源设计、系统稳压电源设计、ADC0809模数转换电路设计、看门狗电路设计、显示模块设计、3-8译码电路设计、AT89C51基本工作电路设计、74LS161分频器设计和辅助电路设计；软件设计的任务是：初始化程序设计、按键程序设计、充放电控制程序设计、A/D转换程序设计、过流保护程序设计、显示程序设计。

Accurate analog power is to provide power, digital chip, amplifiers, microcontroller is the voltage required by A/D sampling data output voltage, and comparison, if there is A deviation is the limit, adjust output signal output and closure, alarm, The working process of the working status, manostat by SCM outputs drive LED display, Display circuit used to display the size of the output voltage of power.

准确说就是模拟电源提供各个芯片电源、数码管、放大器所需电压，单片机则通过A/D采样输出电压，与设定值进行比较，若有偏差则调整输出，越限则输出报警信号并截流；工作过程中，稳压电源的工作状态均由单片机输出驱动LED显示；显示电路用于显示电源输出电压的大小。

By sampling echo signal demodulated and A/D transform, sampling value is transmitted to SCM for compare, division, calculation, and exporting gain code to control signal range; furthermore controlling the AGC circuit, realizing amplification control to echo signal, consequently stabilitate the signal range in a window for the later circuit.

通过对检波后的回波信号进行采样，经过A/D变换，采样值送入单片机内部进行比较、判别、计算，然后输出可控制信号幅度的增益码去控制AGC电路的受控级，实现对回波信号的增益控制，从而使得输出信号幅值稳定在一个窗口内，供后续电路处理。

The existing system digitizes the IF signal at the output of the intermediate frequency amplifier by using a 40MSPS A/D converter and improves the real-time ability of the system with the help of high-speed DSP and high-speed local bus.

现有系统从辐射计的中频输出直接进行采样速率为40MSPS的A/D转换，并采用高速DSP和高速局部总线来提高系统实时性。

Modern cylinder pressure acquisition system is deeply affected by the advanced computer hardware technology. A/D card with the capabilities of high resolution, high sampling rate, non discrepancy and setting sampling rate at will is combined with a lot of excellent measuring equipment such as crank shaft angle encoder, charge amplifier, industrial control computer, etc.

高速发展的计算机硬件技术深刻影响着现代气缸压力数据采集系统的发展，高分辨率、高采集率、多通道、无相差和可以任意设定采样频率等特性的A/D板卡及一大批性能优越的相关测试仪器如转角信号发生器、电荷放大器、工控计算机等。

Using the AT89C2051 single chip computer as the Fuzzy controller, with temperature measure and adjust-convection instrument, A/D transformer, LED displayer, solid switch and so on, form a temperature control which based on Fuzzy control arithmetic.

以AT89C2051单片机为模糊控制器，结合温度传感变送器、A/D转换器、LED显示器、固态继电器等，组成一个基于模糊控制算法的温度控制系统。

System this is it glimmer A/D converter AD9048 to include, a high speed RAM, address counter and corresponding control logic.

该系统包括了闪烁A/D转换器AD9048，高速RAM，地址计数器和相应的控制逻辑。

If the oxygen sensor heater circuit is wired directly to the control unit, an A/D converter with a basic shunt circuit is used to directly check the current of the circuit Fig.

如果氧传感器加热电路直接连接到控制器，具有一个基本的并联电路的 A/D 转换器可用于直接检查当前的电路(图 6)。

The most precious possession that ever comes to a man in this world is a womans heart.

在这个世界上，男人最可贵的财产就是一个女人的心。

Some 4 years above company and divisional management experience, 6 year foreign enterprises work experience.

有4年以上的公司及部门管理经验，6年外企工作经验。