SBIR Phase II: Two-Wavelength Thermal Imaging Solutions to Materials Process Control Needs

这项小型企业创新研究（SBIR）第二阶段项目将开发一种原型双波长成像高温计。为了监测高温材料过程，它使用了基于砷化铟镓（InGaAs）的相机。双波长成像利用强度比对发射率变化的物体进行精确的温度测量。单波长成像传感器将发射率变化引起的绝对强度变化误认为温度变化。温度是许多高温材料加工过程中的中心参数。长时间生产需要温度控制以保证产品质量的一致性。这种热成像传感器有望满足行业对精度、低温操作和低成本的需求。第二阶段将开发用于专业实验室实验的“研究级”成像高温计和用于工业设施测试的“加固级”成像高温计。热成像传感器（具有1-2毫米灵敏度）的潜在商业应用有望在高温材料加工的工业过程控制传感器中得到应用。

This Small Business Innovation Research (SBIR) Phase II project will develop a prototype two-wavelengthimaging pyrometer. To monitor high-temperature materials processes, it uses an indium gallium arsenide (InGaAs)-based camera. Two-wavelength imaging uses intensity ratios to provide accurate temperature measurement of objects with emissivity variation. Single wavelength imaging sensors mistake absolute intensity changes, caused by emissivity variation, for temperature changes. Temperature is a central parameter in many high-temperature materials processese. Long production runs require temperature control for consistent product quality. This thermal imaging sensor is expected to meet industry needs for accuracy, low temperature operation, and low cost. Phase II will develop a 'research grade' imaging pyrometer for use in specialized laboratory experiments and a 'ruggedized grade' imaging pyrometer for testing in industrial facilities.Potential commercial applications of the thermal imaging sensor (with its 1-2 mm sensitivity) are expected in industrial process control sensors for high temperature materials processing.