【爱好者】Arduino+GPRS 的环境监控方案
本实采用的硬件，除了一个串口模块以外（约200元），其他均可以从taobo上面找到标准产品
比较有意思的地方：可以通过手机app，微信随时掌控监测数据的情况。
------------------------------------------------------------------------万恶的分界线------------------------------------------------------------------------------------
使用乐为物联GPRS模块搭建远程环境监测系统
1 目的
试验基于Arduino硬件平台，采用乐为物联GPRS模块监控不具备有线网络接入条件的山区环境，可以用于农业、林业数据采集。
2 实验条件
硬件设备列表：
1) Arduino Nano约50RMB，
2) 乐为物联GPRS模块为测试版（必要的GPRS资费SIM卡），
3) DSM501A模块约30RMB，颗粒物传感器，目的在于监测花粉浓度，PWM输出，
4) HTF3223LF模块23RMB，用于监测空气温湿度，NTC温度输出（试验采用10k上拉），湿度频率输出，
5) BH1750模块13RMB，监测光照强度，I2C输出，
6) 降雨传感器，大约10元，用于监测降雨情况，逻辑电平输出，
7) LCD1602，大约10元，
数据系统平台：乐联网
http://www.lewei50.com
3 硬件连线
1) 乐为物联GPRS模块为6脚，本次只用1、2、3、4脚，1脚为Vcc接电源5-12伏输入，2脚为接地，3脚为TTL电平TX，4脚为TTL电平RX。
2) DSM501A，本次只使用2、3、5脚，2脚为Vout 2 output (PWM)接Arduino D8， 3脚为Vcc接电源5伏，5脚为GND接地。
3) HTF3223LF模块，使用1、2、3、4脚，1脚为NTC输出端，接Arduino A0，2脚为GND接地，3脚为湿度频率输出，接Arduino D2，4脚为Vcc接电源5伏。
4) BH1750模块为5脚，I2C接口，本次不用接ADD脚，VCC接电源5伏，SCL接Arduino A5，SDA接Arduino A4，GND接地。
5) 降雨传感器为4脚，逻辑输出接Arduino D10，VCC接电源5伏，GND接地。
6) LCD1602，本次采用4数据线连接法，RS 接Arduino D12，Enable接Arduino D11， LCD D4接Arduino D4，LCD D5接Arduino D5，LCD D6接Arduino D6，LCD D7接Arduino D7，LCD R/W 接地，LCD V0接10k可调电阻，LCD使用5伏供电，背景灯可设开关。
XML/HTML代码
- #include<string.h>
- //#include <SoftwareSerial.h>
- #include <Wire.h>
- #include <math.h>
- //#include <MsTimer2.h>
- #include <LiquidCrystal.h>
- LiquidCrystal lcd(12, 11, 4, 5, 6, 7);
- //* LCD RS pin to digital pin 12
- // * LCD Enable pin to digital pin 11
- // * LCD D4 pin to digital pin 4
- // * LCD D5 pin to digital pin 5
- // * LCD D6 pin to digital pin 6
- // * LCD D7 pin to digital pin 7
- // * LCD R/W pin to ground
- // * 10K resistor:
- // * ends to +5V and ground
- // * wiper to LCD VO pin (pin 3)
- //SoftwareSerial mySerial(9, 10); // RX, TX
- //String inputString = "";
- const int buttonPin = 10; //the number of the jiangyu input pin
- int buttonState = 0; // variable for reading the jiangyu status
- int Rain = 1;
- int BH1750address = 0x23;//BH1750 I2C地址
- byte buff[2];
- float BH = 0;
- const int analogInPin = A0; // Analog input pin that the potentiometer is attached to//*//Freqinput pin D2
- int pin = 8;//DSM501A input D8
- float wuchaxiuzheng = 0;
- unsigned long duration;
- unsigned long starttime;
- unsigned long endtime;
- unsigned long sampletime_ms = 30000;
- unsigned long lowpulseoccupancy = 0;
- float ratio = 0;
- float concentration = 0;
- float tempconcentration=0;
- int sensorValue = 0; // value read from the NTC
- int TEMPRATURE=0;
- int i=0;
- float R_Data=0;
- float U_data [111]={4.67,4.65,4.64,4.62,4.60,4.57,4.55,4.53,4.51,4.48,4.46,4.43,4.40,4.38,4.35,4.32,4.28,4.25,4.22,4.19,4.15,4.11,4.08,4.04,4.00,3.96,3.92,3.88,3.83,3.79,3.75,3.70,3.65,3.61,3.56,3.51,3.47,3.42,3.37,3.32,3.27,3.22,3.17,3.11,3.06,3.01,2.96,2.91,2.86,2.81,2.75,2.70,2.65,2.60,2.54,2.50,2.44,2.39,2.34,2.29,2.24,2.20,2.15,2.10,2.06,2.01,1.96,1.92,1.87,1.83,1.78,1.74,1.70,1.66,1.62,1.58,1.54,1.50,1.47,1.43,1.39,1.36,1.32,1.29,1.25,1.22,1.19,1.15,1.12,1.09,1.06,1.04,1.01,0.98,0.96,0.93,0.91,0.88,0.86,0.84,0.81,0.79,0.77,0.75,0.73,0.713,0.69,0.67,0.66,0.64,0.62};//温度对应NTC电表格
- int divider[6] = {0, 1, 8, 64, 256, 1024};//read RH use interrupt get F
- int prescaler = 5;
- double count = 0;
- double middle = 0;
- char x = 0;
- int Fout=0;
- int RH=0;
- byte du[8]={
- B00111,
- B00101,
- B00111,
- B00000,
- B00000,
- B00000,
- B00000,
- };//define 1602 char
- ISR(TIMER1_OVF_vect)
- {
- if (prescaler < 4)
- {
- prescaler++;
- }
- }
- void interrupt()
- {
- if (!x)
- {
- count = TCNT1;
- TCNT1 = 0x000;
- TCCR1B = prescaler;
- attachInterrupt(0, interrupt, FALLING);
- }
- else
- {
- middle = TCNT1;
- attachInterrupt(0, interrupt, RISING);
- }
- x = ~x;
- }
- void setup()
- {
- Wire.begin();
- Serial.begin(9600);
- // mySerial.begin(9600);
- // inputString.reserve(200);
- // MsTimer2::set(2000, timer); //定时器设置,每2秒触发一次timer函数操作
- // MsTimer2::start();
- // pinMode(buttonPin, INPUT);
- analogReference(DEFAULT);//INTERNAL
- lcd.createChar(1,du);
- lcd.begin(16, 2);
- lcd.clear();
- // lcd.setCursor(0, 0);
- // lcd.print("PM2.5=");
- // lcd.setCursor(0, 1);
- // lcd.print("T= ");
- // //lcd.write(1);
- // lcd.print(" RH= %");
- // Serial.begin(9600);
- pinMode(buttonPin, INPUT);
- pinMode(8,INPUT);
- TIMSK1 = 0x01;
- TCCR1A = 0x00;
- attachInterrupt(0, interrupt, RISING);
- starttime = millis();
- }
- void loop()
- {
- duration = pulseIn(pin, LOW);
- lowpulseoccupancy += duration;
- endtime = millis();
- if ((endtime-starttime) > sampletime_ms)
- {
- ratio = (lowpulseoccupancy-endtime+starttime + sampletime_ms)/(sampletime_ms*10.0); // Integer percentage 0=>100
- concentration = 1.1*pow(ratio,3)-3.8*pow(ratio,2)+520*ratio+0.62; // using spec sheet curve
- //Serial.print(lowpulseoccupancy);
- // Serial.print(",");
- //Serial.print(ratio);
- // Serial.print("DSM501A:");
- // Serial.println(concentration);
- // Serial.print(";");
- //Serial.println(endtime-starttime);
- wuchaxiuzheng = (endtime-starttime-30000)/30000.0;
- //Serial.println(wuchaxiuzheng);
- concentration = (1.00-wuchaxiuzheng)*concentration;
- //Serial.println(concentration);
- lcd.setCursor(6, 0);
- lcd.print(concentration);
- lcd.print("pcs/0.01cf");
- // lowpulseoccupancy = 0;
- // starttime = millis();
- }
- sensorValue = analogRead(analogInPin); // read the analog in value:
- delay(10);
- R_Data=sensorValue*5/1024.0;
- //Serial.print("R_Data = " );
- //Serial.print(R_Data);
- for(i=0;i<111;i++){
- if(R_Data>4.67)
- {
- TEMPRATURE =-30;//对应-30℃
- }
- else if(R_Data<0.62)
- {
- TEMPRATURE=80; //对应80℃
- }
- else if(R_Data<U_data[i]&&R_Data>U_data[i+1])
- {
- TEMPRATURE=int(i-30-3);
- }
- }
- // Serial.print("T:" );
- // Serial.print(TEMPRATURE);
- // Serial.print(";" );
- delay(10);
- lcd.setCursor(0, 0);
- lcd.print("PM2.5=");
- lcd.setCursor(0, 1);
- lcd.print("T= ");
- //lcd.write(1);
- lcd.print(" RH= %");
- // lcd.setCursor(0, 1);
- // lcd.print("T= ");
- // //lcd.write(1);
- // lcd.print(" RH= %");
- lcd.setCursor(2, 1);
- lcd.print(TEMPRATURE);
- lcd.write(1);
- lcd.print("C");
- Fout=(16000000.0 / divider[prescaler] / count);
- //Serial.print("Vsensor=" );
- //Serial.print(sensorValue);
- //Serial.print(", " );
- //Serial.print("Freq=");
- //Serial.print(Fout);
- // Serial.print(" ");
- // Serial.print(int(divider));
- // Serial.print(" ");
- // Serial.print(prescaler);
- // Serial.print(" ");
- // Serial.println(count);
- if (Fout<8115)
- {
- RH=100;
- // Serial.print("RH:100");
- // Serial.println(";");
- lcd.setCursor(13, 1);
- lcd.print("H.");
- }
- else if(Fout>9595)
- {
- RH=0;
- // Serial.print("RH:0");
- // Serial.println(";");
- lcd.setCursor(13, 1);
- lcd.print("L.");
- }
- else
- {
- RH=(9595-Fout)/14.8;
- // Serial.print("RH:");
- // Serial.print(RH);
- // Serial.println(";");
- lcd.setCursor(13, 1);
- lcd.print(RH);
- }
- if (prescaler > 1)
- {
- prescaler--;
- delay(200);
- }
- //if( flag )//
- // {
- // Serial.print( BH1750() );
- // Serial.println("[lux]");
- //
- // flag = 0;//归零，等着定时中断重新赋值
- // }
- delay(2000);
- if(tempconcentration!=concentration)
- {
- tempconcentration=concentration;
- BH=BH1750();
- // read the state of the jiangyu value:
- buttonState = digitalRead(buttonPin);
- // check if the jiangyu is low.
- // if it is, the buttonState is LOW:
- if (buttonState == LOW) {
- Rain=0;
- }
- else {
- Rain=1;
- }
- //lewei ouput by computer tools
- // Serial.print("D:");
- // Serial.print(concentration);
- // Serial.print(";");
- // Serial.print("T:" );
- // Serial.print(TEMPRATURE);
- // Serial.print(";" );
- // Serial.print("R:");
- // Serial.print(RH);
- // Serial.print(";" );
- // Serial.print("B:" );
- // Serial.print(BH);
- // Serial.print(";" );
- // Serial.print("W:");
- // Serial.print(Rain);
- // Serial.println(";");
- //lewei ouput by GPRS
- lcd.setCursor(0, 1);
- lcd.print(" ");
- lcd.setCursor(0, 1);
- lcd.print(BH);
- lcd.print("LUX");
- //delay(5000);
- String tempstring="@uploading(01,D,";
- String tempstring1=")";
- Serial.print(tempstring);
- Serial.print(int(concentration));
- Serial.println(tempstring1);
- // delay(12000); min transtime
- delay(30000);
- String tempstring2="@uploading(01,T,";
- String tempstring3=")";
- Serial.print(tempstring2);
- Serial.print(TEMPRATURE);
- Serial.println(tempstring3);
- // delay(12000);
- delay(30000);
- String tempstring4="@uploading(01,R,";
- String tempstring5=")";
- Serial.print(tempstring4);
- Serial.print(RH);
- Serial.println(tempstring5);
- // delay(15000);
- delay(30000);
- String tempstring6="@uploading(01,B,";
- String tempstring7=")";
- Serial.print(tempstring6);
- Serial.print(int(BH));
- Serial.println(tempstring7);
- // delay(2000);
- delay(30000);
- String tempstring8="@uploading(01,W,";
- String tempstring9=")";
- Serial.print(tempstring8);
- Serial.print(Rain);
- Serial.println(tempstring9);
- delay(30000);
- lowpulseoccupancy = 0;
- starttime = millis();
- }
- }
- double BH1750() //BH1750设备操作
- {
- int i=0;
- double val=0;
- //开始I2C读写操作
- Wire.beginTransmission(BH1750address);
- Wire.write(0x10);//1lx reolution 120ms//发送命令
- Wire.endTransmission();
- delay(200);
- //读取数据
- Wire.beginTransmission(BH1750address);
- Wire.requestFrom(BH1750address, 2);
- while(Wire.available()) //
- {
- buff[i] = Wire.read(); // receive one byte
- i++;
- }
- Wire.endTransmission();
- if(2==i)
- {
- val=((buff[0]<<8)|buff[1])/1.2;
- }
- if(val<0) val=56134+val;
- return val;
- }
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