SBIR Phase I: An Indoor Air Quality Monitor and HVAC Controler Based on Infrared Sensing Technology

9861457这个小企业创新研究第一阶段项目的重点是研究和开发一种基于新型中红外光学传感器的具有成本效益，高效，商业化的室内空气质量监测仪和暖通空调控制器的原型。该检测系统将能够测量二氧化碳水平、温度、时间和房间占用情况。使用已知浓度的二氧化碳预混合气体，将设计、制造和测试固态光学传感器和监测器。初步测试表明，二氧化碳传感器具有良好的准确性和快速的响应时间，使其成为需求控制通风（DCV）系统应用的良好候选者。无机电部件的固态光源减少了维护重量，尺寸和功率要求，并且相对于目前可用的传感器提供了低成本的潜力。双光束设计使用匹配的光电探测器减少漂移和校准误差。基于二氧化碳的需求控制通风在保持室内空气质量的同时，为建筑物节能提供了巨大的潜力。目前可用的二氧化碳光学传感器体积庞大，需要经常校准和维护。按需控制通风系统的架构将在第II阶段发展，该系统使用拟议的监测器并结合湿度传感器。本提案所述的室内空气质量监测器适用于任何室内环境，只要空气质量及其对健康的影响是一个问题。在大型可变占用空间和采用可变风量通风系统和直接数字控制的建筑物中，它将特别有用。商业应用可能涉及放置在战略位置的多个单元，每个单元通过公共数据网络连接。这种配置将允许开发的室内污染控制平台成为更大需求控制通风系统的关键传感组件，该系统优化能源使用，同时促进建筑居住者的舒适度、生产力和健康。

9861457 This Small Business Innovation Research Phase I project is focused on research and development of a prototype of cost effective, efficient, commercializable indoor air quality monitor and HVAC controller based on a new middle infrared optical sensor. This detection system will be capable of measuring C02 level, temperature, time and room occupancy. A solidstate optical sensor and a monitor will be designed, built, and tested, using premixed gases of known concentration of C02. Preliminary tests show that the C02 sensor demonstrates promising accuracy and a fast response time, making it a good candidate for demand controlled ventilation (DCV) system applications. The solid state light source with no electromechanical parts reduces maintenance weight, size, and power requirements, and provides the potential for low cost relative to currently available sensors. A dual beam design using matched photodetectors reduces drift and calibration errors. C02 based Demand Controlled Ventilation offers a large potential to conserve energy in buildings while maintaining indoor air quality. Currently available optical sensors for C02 are bulky, and require frequent calibration and maintenance. The architecture of a demand controlled ventilation system, using the proposed monitor and incorporating a humidity sensor will be developed in phase II. The indoor air quality monitor described in this proposal has application in any indoor environment where air quality and its effect on health is a concern. It will be particularly useful in large variable occupancy spaces and in buildings incorporating variable air volume ventilation systems and direct digital controls. Commercial applications could involve multiple units placed at strategic locations each connected through a common data network. This configuration would allow the developed indoor pollution control platform to become the key sensing component(s) of a larger demand controlled ventilation system which optimizes energy use while promoting the comfort, productivity and health of the building occupants.