CAJ | 학술논문

手持式移动终端平台在农业信息采集与监控领域得到广泛应用。为了降低通信成本和提高通信可靠性，本文基于Internet的C/S架构，设计了移动终端平台与数据采集汇聚节点的多径通信系统，并实现了温室监控数据的远近程通信。远程通信时，移动终端平台通过3G或4G电信网络登录到Internet网络，与汇聚节点服务器实现数据通信；近程通信时，移动终端平台通过局域网WiFi的AP模式与汇聚节点直接通信。温室环境参数监测测试结果表明，移动终端能够可靠的的获取温室汇聚节点的数据，并根据网络连接状态和WiFi信号强弱实现远近程两种通信模式自由切换。
수지식이동종단평태재농업신식채집여감공영역득도엄범응용。위료강저통신성본화제고통신가고성，본문기우Internet적C/S가구，설계료이동종단평태여수거채집회취절점적다경통신계통，병실현료온실감공수거적원근정통신。원정통신시，이동종단평태통과3G혹4G전신망락등록도Internet망락，여회취절점복무기실현수거통신；근정통신시，이동종단평태통과국역망WiFi적AP모식여회취절점직접통신。온실배경삼수감측측시결과표명，이동종단능구가고적적획취온실회취절점적수거，병근거망락련접상태화WiFi신호강약실현원근정량충통신모식자유절환。
Handheld mobile terminal platform has been widely used in the field of agricultural information col-lection and monitoring. In order to reduce communication costs and improve the communication reliability, in this paper, a multipath communication system, which has achieved remote communication and short-range com-munication, has been designed between mobile terminal platform and data acquisition sink node based on C/S architecture of Internet. In the case of remote communication, mobile terminal logs on to the Internet platform to communicate with sink node by 3G or 4G network; While under short-range communication, mobile terminal communicates with data acquisition sink node by LAN WiFi-AP mode. The test results of Greenhouse environ-ment parameters monitoring show that mobile terminal is not only able to obtain reliable data from greenhouse sink node, but also achieve the free switch between remote communication mode and short-range communication mode depending on the network connection status and WiFi signal strength.