CAJ | 학술논문

　　作物需水信息的快速获取和实时传输是实现智能诊断和精量灌溉的前提。为此，设计了一种实时采集影响作物需水多环境参数的多通道数据采集系统。该系统以超低功耗单片机 MSP430F149为核心处理模块、西门子MC39i 为无线传输模块，以计算作物需水量的彭曼—蒙特斯公式中的主要气象要素（温度、湿度、日照时数、风速、辐射）和土壤湿度作为采集对象，根据各传感器输出信号设计了数据采集通道数量及类型。设计选用了系统的实时时钟电路、数据存储模块、LCD 液晶显示以及控制键盘等电路，开发了系统各模块的控制软件，实现了通道选择、数据采集、数据处理、液晶显示及无线数据传输等功能。经电位器模拟输出电压测试，系统能实现数据采集和实时显示的功能，可以应用于灌溉决策系统中作物需水信息的实时监测。
　　작물수수신식적쾌속획취화실시전수시실현지능진단화정량관개적전제。위차，설계료일충실시채집영향작물수수다배경삼수적다통도수거채집계통。해계통이초저공모단편궤 MSP430F149위핵심처리모괴、서문자MC39i 위무선전수모괴，이계산작물수수량적팽만—몽특사공식중적주요기상요소（온도、습도、일조시수、풍속、복사）화토양습도작위채집대상，근거각전감기수출신호설계료수거채집통도수량급류형。설계선용료계통적실시시종전로、수거존저모괴、LCD 액정현시이급공제건반등전로，개발료계통각모괴적공제연건，실현료통도선택、수거채집、수거처리、액정현시급무선수거전수등공능。경전위기모의수출전압측시，계통능실현수거채집화실시현시적공능，가이응용우관개결책계통중작물수수신식적실시감측。
The paper designs a multi-channel data acquisition system based on an ultra-low power MCU MSP430F149 and GPRS wireless transmission in order to obtain real-time crop water requirement information precisely and rapidly and achieve wireless remote data transmitting.The system can acquire multiple parameters affecting crop water requirement . The article regards multi-meteorological factors(temperature, humidity, sunshine duration, wind speed, radiation) ac-cording to penman-monteith equation and soil moisture which influences crop water requirement as collecting objects and designs channels and channels ’ type of the system based on sensors ’ output signals.The paper designs a real-time clock circuit, data storage module, LCD liquid crystal display and the keyboard circuits , etc.And develops software of each module.The system can implement channel selection , data acquisition, data processing, liquid crystal display, wireless transmission, etc.The system can achieve the functions of data acquisition and real-time display through the test , the percentage error is 2.56%, which demonstrates the system can be applied to monitoring crop water requirement informa-tion instantly in irrigation decision-making system.