Optical glass molding temperature on-line detection method and device

Abstract

The invention discloses an optical glass molding temperature on-line detection method and device. The method includes the following steps: determining dependence of resistivity of optical glass on temperature in advance; and measuring glass resistance in real time during glass molding, and pre-estimating real-time temperature of the glass according to the measured glass resistance and the dependence of the resistivity on the temperature which is determined in advance. The optical glass molding temperature on-line detection method and device can realize on-line detection of the glass temperature during glass molding, and predicts the internal temperature by measuring the resistance of the optical glass. The response speed of electrical signals can be faster than the response speed of thermocouple, which solves the problem of low temperature measurement response of conventional thermocouple. Voltage and current signals at the two ends of the glass are converted into temperature information, and so no space needs to be left in a mold to embed the thermocouple and no additional temperature sensor is required, which is simple in structure. 本发明公开了一种光学玻璃模压温度在线检测方法以及装置，方法包括：预先测定光学玻璃的电阻率对温度的依赖性；在玻璃模压过程中实时测定玻璃电阻，根据测得的玻璃电阻和预先测定的电阻率对温度的依赖关系预估玻璃的实时温度。本发明可实现玻璃模压过程中玻璃温度的在线检测，通过测量光学玻璃的电阻来预测其内部温度，而电信号的响应速度相较于热电偶的响应速度来说，可以更快，解决了传统热电偶测温响应速度慢的问题，可以直接将玻璃两端的电压和电流信号转化成温度信息，因此不需要在模具中留有空间嵌入热电偶，也不需要额外的温度传感器，结构简单。