系统能够实现自动化灌溉，具有排水警示、实时时钟、历史数据查询、数据上传及双向通信等功能。
And, the system can realize functions of automatic irrigation, drainage warning, real time clock, historical data inquiry, data up-transmission and two-way communication.
数据采集系统包括信号调理电路、DSK接口电路、RS- 485通信接口电路、系统时钟电路及电源电路等。
The data acquisition system consists of the signal conditioning circuit, DSK interfacing circuit, RS-485 communication interfacing circuit, system clock circuit, the power circuit, and so on.
设计了一种新型平滑度仪，详细描述了控制器、数据采集、人机接口和实时时钟等模块的具体选型及设计；
A new smoothness tester has been designed and accomplished. This paper presents in details the module design of controller, data acquisition, man-machine interface and real clock.
在发送端时钟频率随时间变化的情况下，以较低的成本和较简单的电路实现，保证了接收端采样数据及音频数据恢复的准确性。
Because clocking frequency of sending terminal is changed with times at lower cost and simple circuit, accuracy of receiving end sampled data and audio - data recovery is assured.
在发送端时钟频率随时间变化的情况下，以较低的成本和较简单的电路实现，保证了接收端采样数据及音频数据恢复的准确性。
Because clocking frequency of sending terminal is changed with times at lower cost and simple circuit, accuracy of receiving end sampled data and audio - data recovery is assured.
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