信号装置

Apparatus for converting an M-bit digital signal into an analogue signal.

将M位数字信号转换为模拟信号的装置。

The system adopted active tracking,namely calculate the input angle of the tracking device in advance,the angle is correspondent to the sun position some moment.Photoelectric sensors react the sunlight that putting on different position of the platform, feedback electrical signal.Then single-chip applys the subprogram and sends out pulse to step motors according to the signals,can control the rotate angle and direction of the step motor. The mechanism has realized the automatic track to the sun, so that the trackers top flat board can be always vertical to the sunlight and arrive the furthest receiving energy.

系统采用主动式跟踪，即预先计算好对应于某时刻太阳位置的跟踪机构的输入角度，通过跟踪器上平台不同位置上摆放的光电传感器感受该太阳位置的光照，反馈回电信号，单片机根据该信号调用子程序发出脉冲对步进电动机的转动角度和方向进行控制，实现了机构对太阳的自动跟踪，使跟踪装置的上平台始终处于垂直于光照方向，达到了能量最大限度的接收。

Annunciator is an accessory device used to give remote indication of the status of an operating component in a system.

信号器：信号器作为一个附属装置常用于远程显示系统的各个组成部分的运行状态。

The device further comprises a modulation unit (3) coupled to the heating control unit (2) for producing the control signal in response to an audio signal.

该装置还包括耦合到热控制单元(2)用于响应音频信号产生控制信号的调制单元(3)。

Scanner is a relatively sophisticated equipment, it is necessary to use at work within the photoelectric conversion device to convert analog signals into digital signals, and then to the computer.

扫描仪是一种比较精致的设备，它在工作时需要用到内部的光电转换装置，以便把模拟信号转换成数字信号，然后再送到计算机中。

A sidestream CO2 concentration measurement device using infrared method for medical is researched and developed in this paper. The module uses a detecter based on infrared absorption, and obtains gas sample from patient respiratory route through sidestream airway. A microprocessor is used to collect and process data, and to communicate with patient monitor, receiving commands, transmitting wavedata and parameters.

本文研制了一种医用旁流式红外吸收CO2浓度检测装置，利用红外吸收气体检测原理设计CO2浓度探头和信号放大电路，使用旁流式采样气路获取病人呼吸气体的样本，以32位微控制器为核心的信息处理系统负责对信号进行采集、处理，以及与主机通讯接受控制命令和传输波形数据和计算参数。

A load modulating device comprises means (4) for polarising the housing of the transistor (M2, M3), at the first supply voltage or at the second voltage, in accordance with a logic modulation signal.

载荷调制装置包括一些偏压装置(4)，它可以根据逻辑调制信号，使一个或两个晶体管(M2、M3)的阱偏置到第一电源电压或第二电源电压。

The relationship between safe driving and technical condition of automobiles is analyzed in terms of steering system, brake system, wheel, walking mechanism , light signals and the key points for preventing accidents are presented.

本文主要从转向装置、动装置、轮、路机构、光信号等方面分析了安全行驶与汽车技术状况的关系，指出了事故预防的要点。

The extra low electromagnetic wave, wavelet technology, pipe track instrument,DGPS and tracing signal equipment are used to solve the key question of trans-mit- receive and communication.

研究信息融合技术在海底管道维修装置与检测装置间的应用，采用超低频电磁波，小波分析等技术与管线跟踪探测仪、DGPS以及示踪信号探测器等设备解决发射、接收、通讯技术中的关键技术点。

The common interference sources of microprocessor-based protective equipment are sum-marized,including power supply interference,electrostatic and electromagnetic induction interference,signal channel interference,and so on.

归纳了微机保护装置常见的干扰源，主要有供电系统、静电感应、电磁感应及信号通道等干扰，分析了干扰对装置正常工作的影响。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。