【分享】自制环境参数检测装置接入 oneNet 平台（二）

xiebinqiang

第二部分 传感器接入和数据采集 通信的问题解决了，下面在ardiuno板子上接入传感器，采集数据，三个传感器接线方式如下：

噪音传感器           ardiuno
GND-------------------GND
VCC-------------------5V
AO--------------------A0
DO-------------------悬空

温湿度传感器         ardiuno
GND------------------GND
VCC-------------------5V
AO-----10K上拉电阻----A1

关照传感器传感器         ardiuno
GND------------------------GND
VCC------------------------5V
SCL------------------------SCL
SDA------------------------SDA
ADD------------------------GND


添加了读取传感器数据的函数后，代码如下：

[mw_shl_code=bash,true]#include //温湿度
#include  //IIC
#include  

#define RET_OK   0
#define RET_ERR  1

int BH1750address = 0x23;
byte buff[2];

#define DHTPIN A1
#define DHTTYPE DHT11
DHT dht(DHTPIN, DHTTYPE);

void setup() {
  // put your setup code here, to run once:
  pinMode(8, OUTPUT);
  Serial.begin(115200);
  dht.begin();
  Wire.begin();//初始化IIC接口

  while (!Serial) //
  {
    ; // wait for serial port to connect. Needed for Leonardo only
  }

  //init WIFI module
  WifiInit();
}

void WifiInit(void)
{
  SendCmd("AT+CWMODE=3\r");
  SendCmd("AT+RST\r");
  //无线网络的SSID和密码
  SendCmd("AT+CWJAP=\"hello-simon-30\",\"guajiguajiSIMONSEN2048\"\r");
  SendCmd("AT+CIFSR\r");
  SendCmd("AT+CIPSTART=\"TCP\",\"192.168.206.12\",8234\r");
  //SendCmd("AT+CIPSTART=\"TCP\",\"183.230.40.33\",80\r");
  SendCmd("AT+CIPMODE=1\r");
  Serial.println("AT+CIPSEND\r");
}

void loop() {
  float temp, hum;
  int noise;
  uint16_t light;

  // put your main code here, to run repeatedly:
  ReadTempHum(&hum, &temp);
  noise = ReadVoice();
  light = LightStrength();

  //数据输出到服务器，此处为192.168.206.12的PC
  Serial.print("temp:");
  Serial.print(temp);
  Serial.print("\thum:");
  Serial.print(hum);
  Serial.print("\tnoise:");
  Serial.print(noise);
  Serial.print("\tlight:");
  Serial.println(light);
  delay(2000);
  //LedFlash();
}

void LedFlash(void)
{
  digitalWrite(8, HIGH);
  delay(500);
  digitalWrite(8, LOW);
  delay(500);
}

char SendCmd(String data)
{
  Serial.println(data);  //发送AT指令
  while (1)
  {
      if (Serial.find("OK") == true)
      {
          LedFlash();
          break;
      }
      Serial.println(data);
  }
  return RET_OK;
}

void ReadTempHum(float *h, float *t) //读取温湿度数据
{
  *h = dht.readHumidity();
  // Read temperature as Celsius
  *t = dht.readTemperature();
  // Read temperature as Fahrenheit
  float f = dht.readTemperature(true);

  // Check if any reads failed and exit early (to try again).
  if (isnan(*h) || isnan(*t) || isnan(f))
  {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }
}

int ReadVoice(void)//读取噪声数据
{
  int temp;
  temp = analogRead(A0);
  temp = (long)100*temp/1024; //换算成分贝
  //delay(1000);

  return temp;
}

uint16_t LightStrength(void)//读取光照强度数据
{
   int i;
   uint16_t val=0;
   BH1750_Init(BH1750address);
   delay(200);
   //Serial.println("[lx]");
   if(2 == BH1750_Read(BH1750address))
   {
     val=((buff[0]<<8)|buff[1])/1.2;
     //Serial.print(val,DEC);     
     //Serial.println("[lx]");
   }
  delay(150);

  return val;
}

int BH1750_Read(int address) //
{
  int i=0;
  Wire.beginTransmission(address);
  Wire.requestFrom(address, 2);
  while(Wire.available()) //
  {
    buff = Wire.read();  // receive one byte
    i++;
  }
  Wire.endTransmission();  
  return i;
}

void BH1750_Init(int address)
{
  Wire.beginTransmission(address);
  Wire.write(0x10);//1lx reolution 120ms
  Wire.endTransmission();
}[/mw_shl_code]
编译后烧写到ardiuno板，重启，在PC端用网络调试工具查看数据传输结果，如下图所示：


表明各个传感器数据采集成功。