带语音功能的温湿度测量仪设计

Design of temperature and humidity measuring instrument with voice broadcast function

利用凌阳16位单片机SPCE061A,一线制数字温度传感器DS18B20和电容式湿度传感器HS1101,设计一种带语音功能的室内温湿度测试系统。DS18B20作为温度传感器,将采集到的温度值送入单片机中进行数据处理得到摄氏温度值;将湿度传感器HS1101接入由555定时器构成的多谐振荡器电路中,测量输出频率,根据频率与湿度的关系计算出相对湿度值;测量结果输出到RT12864M液晶显示模块进行显示;通过按键控制温湿度测量值的语音播报。系统性能指标:温度测量范围0～80℃,精度0.5℃;湿度测量范围0～80%RH,精度5%RH。本测试仪具有较高的稳定性、准确性和实用性。

Temperature and humidity measuring instrument is designed using Sunplus 16-bit MCU （micro controller unit） SPCE061A, one-wire digital temperature sensor DS18B20 and capacitive humidity sensor HS1101, which has voice broadcast function. Using DS18B20 as a temperature sensor, temperature data is acquired by microprocessor for processing to celsius temperature; HS1101 humidity sensor is connected to the multiple harmonic oscillator circuit based on timer 555, the output frequency is measured, according to the frequency and humidity formula, and the corresponding humidity is calculated. The results of temperature and humidity are exported to RT12864M LCD（liquid crystal display）modules, the voice broadcast of temperature and humidity measurements is controlled through keystroke. System Specifications： temperature measurement range 0-80℃, accuracy 0. 5℃, humidity measurement range 0-80% RH, accuracy 5% RH. The instrument has high stability, accuracy and practicality.