电子技术
電子技術
전자기술
ELECTRONIC TECHNOLOGY
2014年
9期
93-96
,共4页
酒精气体传感器%模数转换%单片机%酒精浓度阈值%液晶显示器%制版软件%印刷电路板
酒精氣體傳感器%模數轉換%單片機%酒精濃度閾值%液晶顯示器%製版軟件%印刷電路闆
주정기체전감기%모수전환%단편궤%주정농도역치%액정현시기%제판연건%인쇄전로판
alcohol-gas sensor%ADC%MCU%alcohol concentration threshold%LCD%plate-making software
酒精气体浓度探测仪采用MQ-3乙醇气体传感器对空气中的酒精浓度进行检测，利用单片机把检测到的酒精浓度模拟量电压信号转换成数字量，再和预设的酒精浓度阀值进行比较，如果超过阀值由单片机控制三极管驱动蜂鸣器报警，液晶屏显示报警时的酒精浓度；本电路可以由键盘预先设定、调整阀值；本电路能判断吹气是否有效；电路全部采用Protel Dxp 2004制版软件设计；印刷电路板采用双面板设计、双面覆铜方案。
酒精氣體濃度探測儀採用MQ-3乙醇氣體傳感器對空氣中的酒精濃度進行檢測，利用單片機把檢測到的酒精濃度模擬量電壓信號轉換成數字量，再和預設的酒精濃度閥值進行比較，如果超過閥值由單片機控製三極管驅動蜂鳴器報警，液晶屏顯示報警時的酒精濃度；本電路可以由鍵盤預先設定、調整閥值；本電路能判斷吹氣是否有效；電路全部採用Protel Dxp 2004製版軟件設計；印刷電路闆採用雙麵闆設計、雙麵覆銅方案。
주정기체농도탐측의채용MQ-3을순기체전감기대공기중적주정농도진행검측，이용단편궤파검측도적주정농도모의량전압신호전환성수자량，재화예설적주정농도벌치진행비교，여과초과벌치유단편궤공제삼겁관구동봉명기보경，액정병현시보경시적주정농도；본전로가이유건반예선설정、조정벌치；본전로능판단취기시부유효；전로전부채용Protel Dxp 2004제판연건설계；인쇄전로판채용쌍면판설계、쌍면복동방안。
The present alcohol-gas detector uses MQ-3 ethanol gas sensor to detect the alcohol concentration in the air, and uses MCU to convert the analog voltage signal of the alcohol concentration into digital signal, and then compares it with the preset threshold, if it exceeds the threshold, the buzzer alarming driven by a transistor controlled by a MCU, and the LCD displaying the alcohol concentration at the alarming time; the circuit can be set in advance with the keyboard, and the threshold can be adjusted; the circuit can judge whether the blowing is effective; the circuit is designed wholly with Protel Dxp 2004 plate-making software; the PCB uses double-sided design, and double-sided copper-clad plate design scheme.
