材料:1，esp8266-01s一個或者esp8266miniD1一個。
2，人體熱釋紅外感應探頭一個
3，杜邦線三根

工作原理:人體熱釋紅外探頭檢測到人體信號，通過esp8266-01s上傳到巴法云，然后給微信發送報警信息，如果你在家門口按裝一個報警器，當有人進入探頭檢測范圍內(3/5米）。報警器通過esp8266給微信發送報警信息，從而實現遠程報警。

源程序:
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266HTTPClient.h>

#define sensor 2 //紅外傳感器輸入口
/******************************************************************************/
#define DEFAULT_STASSID “LP_360-wifi” //WIFI名稱
#define DEFAULT_STAPSW “123456” //WIFI密碼

String uid = “285293a244b640e5d7de1944ee684f”; // 用戶私鑰，巴法云控制臺獲取
String type = “1”; // 1表示是預警消息，默認即可
String device = “人體紅外傳感器設備”; // 設備名稱
String msg = “警告：有人闖入你家”; //發送的消息
String msg2 = “手機遠程報警器”; //消息備注，可為空
int delaytime = 0; //為了防止被設備“騷擾”，可設置賢者時間，單位是秒，如果設置了該值，在該時間內不會發消息到微信，設置為0立即推送。
String ApiUrl = “http://ai.bemfa.com/api/wechat/v1/”; //默認 api 網址

/******************************************************************************/

static uint32_t lastWiFiCheckTick = 0;

//=======================================================================
// WIFI重新連接函數
//=======================================================================
void startSTA(){
WiFi.disconnect();
WiFi.mode(WIFI_STA);
WiFi.begin(DEFAULT_STASSID, DEFAULT_STAPSW);
}
//=======================================================================
// WIFI狀態檢測函數，如果WIFI斷開自動重連
//=======================================================================
void doWiFiTick()
{
if(WiFi.status() != WL_CONNECTED)
{
if(millis() - lastWiFiCheckTick > 1000)
{
lastWiFiCheckTick = millis();
startSTA();
}
}
}
void setup() {
pinMode(sensor, INPUT); // declare sensor as input
delay(1000);
Serial.begin(115200); //Prevents reconnection issue (taking too long to connect)
delay(1000);
WiFi.mode(WIFI_STA); //This line hides the viewing of ESP as wifi hotspot

WiFi.begin(DEFAULT_STASSID, DEFAULT_STAPSW); //Connect to your WiFi router
Serial.println("");

Serial.print(“Connecting”);
// Wait for connection
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}

//If connection successful show IP address in serial monitor
Serial.println("");
Serial.print("Connected to ");
Serial.println(DEFAULT_STASSID);
Serial.print("IP address: ");
Serial.println(WiFi.localIP()); //IP address assigned to your ESP
}

//=======================================================================
// 主循環
//=======================================================================
void loop() {
doWiFiTick();

long state = digitalRead(sensor); if(state == HIGH) {Serial.println("people here");doHttpStick();//在想推送消息的地方執行推送函數即可delay(1000); } else {Serial.println("no people");delay(1000);}

}

//微信消息推送函數**//
void doHttpStick(){ //微信消息推送函數
HTTPClient http; //Declare object of class HTTPClient
String postData;
//Post Data
postData = “uid=”+uid+"&type=" + type +"&time="+delaytime+"&device="+device+"&msg="+msg+"&msg2="+msg2;
http.begin(ApiUrl); //Specify request destination
http.addHeader(“Content-Type”, “application/x-www-form-urlencoded”); //Specify content-type header
int httpCode = http.POST(postData); //Send the request
String payload = http.getString(); //Get the response payload
Serial.println(httpCode); //Print HTTP return code
Serial.println(payload); //Print request response payload
http.end(); //Close connection
Serial.println(“send success”);
}
//=======================================================================[/mw_shl_code]


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