Gravity: I2C BME680 環境多功能感測器 測量VOC（揮發性有機物）、溫度、濕度、氣壓

描述

Gravity: I2C BME680 環境多功能感測器 測量VOC（揮發性有機物）、溫度、濕度、氣壓

DFRobot 推出了新的  Gravity: I2C BME680 環境多功能感測器 是一款四合一MEMS環境感測器，可測量VOC（揮發性有機物）、溫度、濕度、氣壓這四個參數，非常適用於監測空氣品質。由於採用了MEMS技術，該感測器體積小、功耗低，因此也適用於低功耗場合，如可穿戴等。

DFRobot Gravity BME680環境感測器採用Gravity I2C介面，隨插即用，連線簡單方便；板載電源穩壓晶片和電平信號轉換晶片，相容性好，可直接相容3.3V和5V系統；預留了SPI介面，方便做擴展。本產品集成度高，可同時檢測四個環境參數，是氣象站、智慧家居、物聯網、可穿戴等場景的理想選擇。使用本產品，可迅速搭建出一套空氣品質檢測儀。當今空氣污染越來越嚴重，有毒物質超標的傢俱屢屢出現，因此是時候為自己的健康把關了。

技術規格

• 輸入電壓：3V-5.0V
• 工作電流：5mA（開啟VOC測量後，工作電流為25mA）
• 通信介面：Gravity I2C
• 預留介面：SPI
• 溫度測量範圍：-40℃~+85℃
• 溫度測量精度：±1.0℃(0~65℃)
• 濕度測量範圍：0-100%r.H.
• 濕度測量精度：±3%r.H.(20-80% r.H.,25℃)
• 氣壓測量範圍：300-1100hPa
• 氣壓測量精度：±0.6hPa(300-1100hPa,0~65℃)
• IAQ（室內空氣品質）範圍：0-500（值越大，空氣品質越差）
• 模組尺寸：30 × 22(mm) / 1.18 x0.87(inches)

IAQ（室內空氣質量）對照表

室內空氣質量指數對照表

接線圖

本產品支持I2C接口與SPI接口。使用時，請根據選用的通信接口，選擇對應的連線方式。連線方式參考下圖。 推薦使用I2C接口方式，即插即用，簡單易用。 若使用SPI接口，則模塊使用3.3V供電

I2C連接圖

請務必注意線序，VCC接電源，GND接地

1	請務必注意線序，VCC接電源，GND接地

BME680 I2C連線圖

SPI連接圖

請務必注意線序，VCC接3.3V，GND接地

1	請務必注意線序，VCC接3.3V，GND接地

無 IAQ 數據

Arduino

/* * file DFRobot_BME680_I2C.ino * * @ https://github.com/DFRobot/DFRobot_BME680 * * connect bme680 I2C interface with your board (please reference board compatibility) * * Temprature, Humidity, pressure, altitude, calibrate altitude and gas resistance data will print on serial window. * * Copyright [DFRobot](http://www.dfrobot.com), 2016 * Copyright GNU Lesser General Public License * * version V1.0 * date 2017-12-7 */ #include "DFRobot_BME680_I2C.h" #include "Wire.h" /*use an accurate altitude to calibrate sea level air pressure*/ #define CALIBRATE_PRESSURE DFRobot_BME680_I2C bme(0x77); //0x77 I2C address float seaLevel; void setup() { uint8_t rslt = 1; Serial.begin(9600); while(!Serial); delay(1000); Serial.println(); while(rslt != 0) { rslt = bme.begin(); if(rslt != 0) { Serial.println("bme begin failure"); delay(2000); } } Serial.println("bme begin successful"); #ifdef CALIBRATE_PRESSURE bme.startConvert(); delay(1000); bme.update(); /*You can use an accurate altitude to calibrate sea level air pressure. *And then use this calibrated sea level pressure as a reference to obtain the calibrated altitude. *In this case,525.0m is chendu accurate altitude. */ seaLevel = bme.readSeaLevel(525.0); Serial.print("seaLevel :"); Serial.println(seaLevel); #endif } void loop() { bme.startConvert(); delay(1000); bme.update(); Serial.println(); Serial.print("temperature(C) :"); Serial.println(bme.readTemperature() / 100, 2); Serial.print("pressure(Pa) :"); Serial.println(bme.readPressure()); Serial.print("humidity(%rh) :"); Serial.println(bme.readHumidity() / 1000, 2); Serial.print("gas resistance(ohm) :"); Serial.println(bme.readGasResistance()); Serial.print("altitude(m) :"); Serial.println(bme.readAltitude()); #ifdef CALIBRATE_PRESSURE Serial.print("calibrated altitude(m) :"); Serial.println(bme.readCalibratedAltitude(seaLevel)); #endif }

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/* * file DFRobot_BME680_I2C.ino * * @ https://github.com/DFRobot/DFRobot_BME680 * * connect bme680 I2C interface with your board (please reference board compatibility) * * Temprature, Humidity, pressure, altitude, calibrate altitude and gas resistance data will print on serial window. * * Copyright   [DFRobot](http://www.dfrobot.com), 2016 * Copyright   GNU Lesser General Public License * * version  V1.0 * date  2017-12-7 */   #include "DFRobot_BME680_I2C.h" #include "Wire.h"   /*use an accurate altitude to calibrate sea level air pressure*/ #define CALIBRATE_PRESSURE   DFRobot_BME680_I2C bme(0x77);  //0x77 I2C address   float seaLevel; void setup() {   uint8_t rslt = 1;   Serial.begin(9600);   while(!Serial);   delay(1000);   Serial.println();   while(rslt != 0) {     rslt = bme.begin();     if(rslt != 0) {       Serial.println("bme begin failure");       delay(2000);     }   }   Serial.println("bme begin successful");   #ifdef CALIBRATE_PRESSURE   bme.startConvert();   delay(1000);   bme.update();   /*You can use an accurate altitude to calibrate sea level air pressure.    *And then use this calibrated sea level pressure as a reference to obtain the calibrated altitude.    *In this case,525.0m is chendu accurate altitude.    */   seaLevel = bme.readSeaLevel(525.0);   Serial.print("seaLevel :");   Serial.println(seaLevel);   #endif }   void loop() {   bme.startConvert();   delay(1000);   bme.update();   Serial.println();   Serial.print("temperature(C) :");   Serial.println(bme.readTemperature() / 100, 2);   Serial.print("pressure(Pa) :");   Serial.println(bme.readPressure());   Serial.print("humidity(%rh) :");   Serial.println(bme.readHumidity() / 1000, 2);   Serial.print("gas resistance(ohm) :");   Serial.println(bme.readGasResistance());   Serial.print("altitude(m) :");   Serial.println(bme.readAltitude());   #ifdef CALIBRATE_PRESSURE   Serial.print("calibrated altitude(m) :");   Serial.println(bme.readCalibratedAltitude(seaLevel));   #endif }

帶 AIQ 數值

Arduino

/* * file DFRobot_BME680_I2C.ino * * @ https://github.com/DFRobot/DFRobot_BME680 * * connect bme680 I2C interface with your board (please reference board compatibility) * * Temprature, Humidity, pressure, altitude, calibrated altitude, gas resistance and IAQ data will be printed via serial. * * Copyright [DFRobot](http://www.dfrobot.com), 2016 * Copyright GNU Lesser General Public License * * version V1.0 * date 2017-12-7 */ #include "DFRobot_BME680_I2C.h" #include "Wire.h" /*use an accurate altitude to calibrate sea level air pressure*/ #define CALIBRATE_PRESSURE DFRobot_BME680_I2C bme(0x77); //0x77 I2C address float seaLevel; void setup() { uint8_t rslt = 1; Serial.begin(115200); while(!Serial); delay(1000); Serial.println(); while(rslt != 0) { rslt = bme.begin(); if(rslt != 0) { Serial.println("bme begin failure"); delay(2000); } } Serial.println("bme begin successful"); bme.supportIAQ(); } void loop() { static uint8_t calibrated = 0; #ifdef CALIBRATE_PRESSURE if(calibrated == 0) { if(bme.iaqUpdate() == 0) { /*You can use an accurate altitude to calibrate sea level air pressure. *And then use this calibrated sea level pressure as a reference to obtain the calibrated altitude. *In this case,525.0m is chendu accurate altitude. */ seaLevel = bme.readSeaLevel(525.0); Serial.print("seaLevel :"); Serial.println(seaLevel); calibrated = 1; } } #else calibrated = 1; #endif if(calibrated) { uint8_t rslt = bme.iaqUpdate(); if(rslt == 0) { Serial.println(); Serial.print("timestamp(ms) :"); Serial.println(millis()); Serial.print("temperature(C) :"); Serial.println(bme.readTemperature(), 2); Serial.print("pressure(Pa) :"); Serial.println(bme.readPressure()); Serial.print("humidity(%rh) :"); Serial.println(bme.readHumidity(), 2); Serial.print("altitude(m) :"); Serial.println(bme.readAltitude()); #ifdef CALIBRATE_PRESSURE Serial.print("calibrated altitude(m) :"); Serial.println(bme.readCalibratedAltitude(seaLevel)); #endif Serial.print("gas resistance :"); Serial.println(bme.readGasResistance()); if(bme.isIAQReady()) { Serial.print("IAQ :"); float iaq = bme.readIAQ(); Serial.print(iaq); if(iaq < 50) Serial.println(" good"); else if(iaq < 100) Serial.println(" average"); else if(iaq < 150) Serial.println(" little bad"); else if(iaq < 200) Serial.println(" bad"); else if(iaq < 300) Serial.println(" worse"); else Serial.println(" very bad"); } else { Serial.print("IAQ not ready, please wait about "); Serial.print((int)(305000-millis())/1000); Serial.println(" seconds"); } } } }

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/* * file DFRobot_BME680_I2C.ino * * @ https://github.com/DFRobot/DFRobot_BME680 * * connect bme680 I2C interface with your board (please reference board compatibility) * * Temprature, Humidity, pressure, altitude, calibrated altitude, gas resistance and IAQ data will be printed via serial. * * Copyright   [DFRobot](http://www.dfrobot.com), 2016 * Copyright   GNU Lesser General Public License * * version  V1.0 * date  2017-12-7 */ #include "DFRobot_BME680_I2C.h" #include "Wire.h"   /*use an accurate altitude to calibrate sea level air pressure*/ #define CALIBRATE_PRESSURE   DFRobot_BME680_I2C bme(0x77);  //0x77 I2C address     float seaLevel; void setup() {   uint8_t       rslt = 1;   Serial.begin(115200);   while(!Serial);   delay(1000);   Serial.println();   while(rslt != 0) {     rslt = bme.begin();     if(rslt != 0) {       Serial.println("bme begin failure");       delay(2000);     }   }   Serial.println("bme begin successful");   bme.supportIAQ(); }   void loop() {   static uint8_t       calibrated = 0;      #ifdef CALIBRATE_PRESSURE   if(calibrated == 0) {     if(bme.iaqUpdate() == 0) {       /*You can use an accurate altitude to calibrate sea level air pressure.        *And then use this calibrated sea level pressure as a reference to obtain the calibrated altitude.        *In this case,525.0m is chendu accurate altitude.        */       seaLevel = bme.readSeaLevel(525.0);       Serial.print("seaLevel :");       Serial.println(seaLevel);       calibrated = 1;     }   }   #else     calibrated = 1;   #endif      if(calibrated) {     uint8_t rslt = bme.iaqUpdate();     if(rslt == 0) {       Serial.println();       Serial.print("timestamp(ms) :");       Serial.println(millis());       Serial.print("temperature(C) :");       Serial.println(bme.readTemperature(), 2);       Serial.print("pressure(Pa) :");       Serial.println(bme.readPressure());       Serial.print("humidity(%rh) :");       Serial.println(bme.readHumidity(), 2);       Serial.print("altitude(m) :");       Serial.println(bme.readAltitude()); #ifdef CALIBRATE_PRESSURE       Serial.print("calibrated altitude(m) :");       Serial.println(bme.readCalibratedAltitude(seaLevel)); #endif       Serial.print("gas resistance :");       Serial.println(bme.readGasResistance());       if(bme.isIAQReady()) {         Serial.print("IAQ :");         float iaq = bme.readIAQ();         Serial.print(iaq);         if(iaq < 50) Serial.println(" good");         else if(iaq < 100) Serial.println(" average");         else if(iaq < 150) Serial.println(" little bad");         else if(iaq < 200) Serial.println(" bad");         else if(iaq < 300) Serial.println(" worse");         else Serial.println(" very bad");       } else {         Serial.print("IAQ not ready, please wait about ");         Serial.print((int)(305000-millis())/1000);         Serial.println(" seconds");       }     }   } }

结果

無 IAQ 數據

带IAQ数据