
MQ-8 氫氣感測器模組 四針帶數位輸出可調整靈敏度
- 貨號
- 175875341(A7-7)
- 分類
- 氣體感測器模組
- 庫存
- 有庫存(0)
商品說明 MQ-8 氫氣感測器模組四針帶數位輸出可調整靈敏度 MQ-8 氫氣感測器模組 所使用的氣敏材料是在清潔空氣中電導率較低的二氧化錫(SnO2)。當感測器所處環境中存在可燃氣體時,感測器的電導率隨空氣中可燃氣體濃度的增加而增大。使用簡單的電路即可將電導率的變化轉換為與該氣體濃度相對應的輸出信號。該氣體感測器對氫氣的靈敏度高,對其他含氫氣體的監測也很理想。這種感測器可檢測多種含氫氣體,特別是城市煤氣,是一款適合多種應用的低成本感測器。 特色: 採用優質雙面板設計,具有電源指示和TTL信號輸出指示; 具有DO開關信號(TTL)輸出和AO模擬信號輸出; TTL輸出有效信號為低電平。(當輸出低電平時信號燈亮,可直接接單片機或繼電器模組) 模擬量輸出的電壓,濃度越高電壓越高。 對氫氣檢測有較好的靈敏度。 有四個螺絲孔便於定位; 產品外形尺寸:32(L)*20(W)*22(H) 具有長期的使用壽命和可靠的穩定性 快速的響應恢復特性 電氣性能: 輸入電壓:DC5V功耗(電流):150mA DO輸出:TTL數字量0和1(0.1和5V) AO輸出:0.1-0.3V(相對無污染),最高濃度電壓4V左右 特別提醒:傳感器通電後,需要預熱20S左右,測量的數據才穩定,感測器發熱屬於正常現象,因為內部有電熱絲,如果燙手就不正常了。 MQ-8 Gas Sensor Module with 5V DC for Hydrogen Gas Detection and Gas Leak Alarm by Optimus Electric It is a highly sensitive gas sensor which is capable of detecting 100 to 1,000 ppm hydrogen gas concentrations in the air. It is a low cost sensor that can detect hydrogen leakage, perfect for a wide range of applications such as gas leak alarm, portable gas detector etc. Specifications • Voltage: 5 V • Current: 150 mA • Concentration Detection: 100 to 1.000 ppm • Temperature: -10 to +50 ° C Arduino 氫氣偵測範例 /* MQ-8 Hydrogen Gas Sensor Circuit with Arduino */ const int AOUTpin=0;//the AOUT pin of the hydrogen sensor goes into analog pin A0 of the arduino const int DOUTpin=8;//the DOUT pin of the hydrogen sensor goes into digital pin D8 of the arduino const int ledPin=13;//the anode of the LED connects to digital pin D13 of the arduino int limit; int value; void setup() { Serial.begin(115200);//sets the baud rate pinMode(DOUTpin, INPUT);//sets the pin as an input to the arduino pinMode(ledPin, OUTPUT);//sets the pin as an output of the arduino } void loop() { value= analogRead(AOUTpin);//reads the analaog value from the hydrogen sensor's AOUT pin limit= digitalRead(DOUTpin);//reads the digital value from the hydrogen sensor's DOUT pin Serial.print("Hydrogen value: "); Serial.println(value);//prints the hydrogen value Serial.print("Limit: "); Serial.print(limit);//prints the limit reached as either LOW or HIGH (above or underneath) delay(100); if (limit == HIGH){ digitalWrite(ledPin, HIGH);//if limit has been reached, LED turns on as status indicator } else{ digitalWrite(ledPin, LOW);//if threshold not reached, LED remains off } }




