| 杨十二，李尚蒲.我国耕地保护补偿评估与“纵横模式”构建[J].广东农业科学,2014,41(3):212-216 |
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我国耕地保护补偿评估与“纵横模式”构建 |
| WSN gateway design and networking study of paddy fieldenvironmental monitoring based on directional antenna |
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| DOI： |
| 中文关键词: 耕地保护补偿 耕地保护评估 横纵模式 |
| 英文关键词: wireless sensor networks environmental monitoring gateway communication protocol paddy field |
| 基金项目:国家社会科学基金（12CJL017）；教育部人文社科
项目（11YJC630103）；农业部软科学项目（201114）；广东省科技
攻关项目（2012A020602042） |
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| 摘要点击次数: 1560 |
| 全文下载次数: 531 |
| 中文摘要: |
| 现行耕地保护政策是一种“委托-代理”式的体制，其核心是指标管理加上监督惩罚，忽视了调动地方政府
保护保耕地的积极性，导致中央和地方在耕地保护上的激励不相容。从土地财政、廉价土地出让和违法超额占地等3
个方面评估了我国耕地保护的数量；从粮食盈余、财政支农、可持续发展3个方面估算了耕地保护的质量。通过对各省
耕地数量保护和耕地质量保护的测算，划分出耕地保护赤字区、平衡区和盈余区。根据分析的结论，补充并完善了耕地
保护补偿的“纵横模式”，促进耕地保护外部性内部化，公平分担耕地保护的成本，具有理论和实践的可行性。 |
| 英文摘要: |
| Timely and accurate grasp of paddy environmental system information, has important guiding significance for
scientific regulation of the growth of rice quality. Monitoring the environmental information including paddy soil moisture, air
temperature and humidity etc, is the premise of precise demand irrigation, demand fertilizing and demand spraying. To solve
these problems, a WSN gateway based on directional antenna applied in paddy field environmental monitoring was designed,
and it had the characteristics of automatic alarm and ensured data integrated. The gateway design included hardware design
and software design. A MSP430F149 was used as the gateway core, a nRF905 RF chip was used as peripherals for node
communication. Soil moisture sensor nodes used TDR-3 and air temperature and humidity sensor used DHT22 for paddy
environmental monitoring in real-time. The GPRS module MC55 was used as the communication module, which achieved the
transmission of environmental information and remote monitoring capabilities. In the hardware platform, hardware drivers and
communication protocols, exception message alarm program and time synchronization protocol were written. The
communication distance, power and storage rate of the WSN node were tested, the usefulness of the gateway field was
studied. The results showed that the gateway node communication distance could be up to 331.18 m, the gateway could work
32 days continuously without solar charging, and maximum storage rate was 849.7 kbps. The networking test results showed
that the network packet loss rate was 0.686%, outside the network packet loss rate was 0.712%, sensor node could collect
data steadily, it could meet the requirements of information acquisition in paddy field environmental monitoring. |
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