MQ-3酒精乙醇傳感器模塊 酒精氣敏檢測報警
產(chǎn)品概述
MQ-3酒精乙醇傳感器模塊是一款高靈敏度氣體檢測模塊，專為酒精（乙醇）蒸汽檢測設計。該模塊采用二氧化錫（SnO2）半導體氣敏材料，能夠在清潔空氣中保持低電導率，當環(huán)境中存在酒精蒸汽時，電導率隨濃度增加而升高，從而實現(xiàn)對酒精濃度的有效檢測。模塊具備雙路信號輸出（模擬量AO和數(shù)字量DO），可靈活接入單片機或繼電器系統(tǒng)，適用于機動車駕駛?cè)藛T檢測、工業(yè)安全監(jiān)測等場景。模塊外形緊湊（尺寸約35.5×22.5×23mm），配備螺絲孔便于安裝，且具有快速的響應恢復特性與長期穩(wěn)定性。1813
技術特點
模塊核心特性包括：
- 雙信號輸出：模擬量AO輸出0~5V電壓（濃度越高電壓越高），數(shù)字量DO輸出TTL低電平信號（可直接驅(qū)動單片機或繼電器）。
- 高靈敏度與選擇性：對乙醇蒸汽響應優(yōu)異，抗汽油、煙霧及水蒸氣干擾。
- 穩(wěn)定可靠：預熱20秒后數(shù)據(jù)穩(wěn)定，內(nèi)置電熱絲正常工作時會輕微發(fā)熱（異常高溫需檢查）。
- 易用性：提供電源指示燈和信號輸出指示燈，支持通過電位器調(diào)節(jié)閾值。2324
應用場景
廣泛用于酒駕排查、工業(yè)乙醇泄漏監(jiān)測、智能家居安全系統(tǒng)等。例如，通過連接單片機可實現(xiàn)濃度超標聲光報警；模擬量輸出可配合ADC轉(zhuǎn)換器實現(xiàn)實時濃度顯示。模塊兼容Arduino、STM32等開發(fā)平臺，適合教育實驗與項目開發(fā)。4527
Product Overview
The MQ-3 Alcohol Ethanol Sensor Module is a highly sensitive gas detection module designed for ethanol vapor monitoring. Utilizing tin dioxide (SnO2) semiconductor technology, the module maintains low conductivity in clean air, while its conductivity increases proportionally with alcohol concentration. It features dual output modes (analog AO and digital DO) for seamless integration with microcontrollers or relay systems, making it ideal for applications such as drunk driving prevention and industrial safety checks. With a compact design (35.5×22.5×23mm) and mounting holes, the module ensures rapid response and long-term reliability.1813
Key Features
- Dual Output Options: Analog AO outputs 0~5V voltage (scaling with concentration), while digital DO provides TTL low-level signals for direct control.
- High Sensitivity & Selectivity: Optimized for ethanol detection with minimal interference from gasoline, smoke, or humidity.
- Stable Performance: Requires 20-second preheating for stable readings; mild heating during operation is normal.
- User-Friendly: Includes power and signal indicators, with adjustable thresholds via potentiometer.2324
Applications
Suitable for diverse scenarios:
- Transportation: Integrated into breathalyzers for real-time alcohol detection.
- Industrial Safety: Monitors ethanol leaks in factories or storage areas.
- Smart Devices: Compatible with Arduino/STM32 for educational or DIY projects, enabling functions like LCD displays or audible alarms.4527
MQ-3酒精乙醇傳感器模塊 酒精氣敏檢測報警
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