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综观现有的酒精检测器系统以单片机AT89S52单片机为基础,并借助相应的外围电路,将检测结果通过LED、LCD等显示方式告知使用者。本设计用的MQK2酒精传感器就是一种对气体敏感的化学传感器,它能随着外部气体的浓度或不同而改变敏感膜的电阻。同时采用了DS18B20温度采集,它能够直接读出被测温度,并且可根据实际要求通过简单的编程实现9~12位的数字值读数方式。系统选AT89S52单片机为控制核心,对检测到的气体状况进行相应的处理分析、处理和显示,并通过报警进行提示。
Looking at the existing alcohol detector system to microcontroller AT89S52 microcontroller-based, and with the appropriate peripheral circuits, the test results through the LED, LCD and other display to inform the user. The MQK2 alcohol sensor designed for this design is a gas-sensitive chemical sensor that changes the resistance of a sensitive membrane depending on the concentration of the external gas or on the difference. At the same time using the DS18B20 temperature acquisition, it can directly read out the measured temperature, and according to the actual requirements of a simple programming to achieve 9 to 12 digital value reading. System selected AT89S52 microcontroller for the control of the core of the detected gas status of the corresponding treatment analysis, processing and display, and through the alarm prompt.