Agricultural Gas Sensor Systems

农业气体传感器系统

• 批准号: 560687-2020
• 负责人: AbdelRahman, Eihab
• 金额: $ 2.19万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=707145
• 关键词: Agricultural; Gas; Sensor; Systems

The production of manure releases chemical compounds generated from biochemical reactions. The sensors will be installed on top of the manure pits to detect the composition and concentration of rising gases. The sensors should have short response and recovery times to allow for continuous monitoring of manure conditions. The wire-grid installation needs to be semi-permanent and maintenance-free. As a result, the sensors should be lightweight, portable, automated, and battery-powered (low power). This implies low (room or ambient) operating temperature as heating would impose significant energy and safety requirements on the sensor system. Methane and Ammonia sensors should be collocated on a single chip and operate as a single sensor system to reduce weight and system complexity. Good candidate sensors should have reasonable sensitivity to methane and ammonia, high selectivity against interferents gases, and good long-term stability. Inertial Micro Electro Mechanical System (MEMS) gas sensors can (i) detect a multiplicity of those gases simultaneously, (ii) in real-time, and (iii) meet low gas concentrations requirements. More sophisticated sensors exist but they are bulky, unsuitable for portable applications, and require manual handling and processing. Over the last decade, the applicants have established a track record of excellence in micro gas sensor design, fabrication, and characterization working both individually and as group. The complementary capabilities of their laboratories are now one of the best micro gas sensor development, test, and characterization facilities in Canada. The underlying detector polymers, sensing mechanism, and gas identification technology have been previously demonstrated. This project will marshal those capabilities to develop a unique sensor system for monitoring of manure pits and lagoons.

肥料的产生释放了生化反应产生的化合物。传感器将安装在肥料坑的顶部，以检测出现的气体的组成和浓度。传感器应具有较短的响应和恢复时间，以允许对肥料状况进行连续监测。电网安装需要半永久性和不含维护。结果，传感器应轻巧，便携，自动化和电池供电（低功率）。这意味着较低（房间或环境）的工作温度，因为加热将对传感器系统施加明显的能量和安全要求。甲烷和氨传感器应在单个芯片上置于单个传感器系统上，以降低重量和系统的复杂性。良好的候选传感器应对甲烷和氨，对干扰物质的高选择性以及良好的长期稳定性具有合理的敏感性。 惯性微型电动机械系统（MEMS）气体传感器可以（i）同时检测到这些气体的多样性，（ii）实时，（iii）满足低气体浓度要求。存在更复杂的传感器，但它们笨重，不适合便携式应用程序，需要手动处理和处理。 在过去的十年中，申请人建立了微型气体传感器设计，制造和表征的卓越记录。其实验室的互补功能现在是加拿大最好的微型汽油传感器开发，测试和表征设施之一。先前已经证明了基础检测器聚合物，感应机制和气体识别技术。该项目将使这些功能设置出一种独特的传感器系统，以监视肥料坑和泻湖。