制冷剂泄漏检测装置输出参数转化方案研究  

Conversion scheme of output parameters of refrigerant leakage detection device

作　　者：李磊磊 韩同瑞 王力国 Li Leilei;Han Tongrui;Wang Liguo(Qingdao Hisense Hitachi Air-conditioning Systems Co.,Ltd.)

机构地区：[1]青岛海信日立空调系统有限公司

出　　处：《制冷与空调》2025年第2期49-52,共4页Refrigeration and Air-Conditioning

摘　　要：制冷剂泄漏检测装置输出参数大多采用异步串行通信(UART)或脉冲宽度调制(PWM)方式进行采集,但空调器基板主控芯片UART端口和PWM端口较少。本文借用成熟的PWM转模/数转换(AD)采样电路,提出采用AD采样滤波方法采集制冷剂泄漏检测装置输出参数,并使用软件仿真和示波器对采集数据进行实测,验证采集数据的准确性。For most of refrigerant leakage detection devices, their output parameters are collected using universal asynchronous receiver transmitter(UART) or pulse width modulation(PWM). However, there are fewer UART ports and PWM ports on the main control chip of the air conditioner substrate. A mature PWM to AD sampling circuit is induced and it is proposed to use the AD sampling filtering method for collecting output parameters of refrigerant leakage detection device. Finally, the collected data is measured by software simulation and oscilloscope to verify the accuracy of the collected data.

关 键 词：空调器 制冷剂 泄漏 PWM信号 AD采样 

分 类 号：TB657.2[一般工业技术—制冷工程]