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This project is created for COVID-19 Detect & Protect Challenge.
When the Malaysia Government announced Restricted Movement Order (RMO), this is how it's look like at the groceries store near to my home where the management team of the groceries store implemented limited amount of customer to enter inside the premises by doing manually. Hence this is where the idea started. A monitoring and managing people to store
People went to buy groceries at groceries store
Simple IOT Human Counter in Premises Architecture
VCC 3.3V PinGND GND PinOUT Pin 40
Schematic Raspberry PI and PIR Sensor
MQ135 Sensor Wemos D1 Mini
VCC 5V PinGND GND PinAO A0 Pin
Dashboardin Node-Red
Video Demo
#include <MQ135.h>
#include <PubSubClient.h>
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
//Wifi setup
const char* ssid="YOUR_WIFI_SSID";
const char* pswd="YOUR_WIFI_PASSWORD";
//MQTT Server
const char* mqtt_server="YOUR MQTT Broker Server";
#define mqtt_port 1883
//timer
long now=millis();
long lastMeasure=0;
//define analog pin
#define ANALOGPIN A0
#define RZERO 206.85
float rzero, ppm;
MQ135 gasSensor =MQ135(ANALOGPIN);
WiFiClient espClient;
PubSubClient client(espClient);
void setup_wifi(){
delay(10);
WiFi.begin(ssid,pswd);
Serial.println();
Serial.print("Connecting to: ");
Serial.println(ssid);
while(WiFi.status() != WL_CONNECTED){
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi Connected");
Serial.print("IP Address: ");
Serial.println(WiFi.localIP());
}
void mqtt_connect(){
Serial.println("Attempting MQTT Connection");
if(client.connect("ESP8266Client")){
Serial.println("MQTT Server Connected");
}
else{
Serial.print("MQTT Connection failed, rc=");
Serial.print(client.state());
Serial.println("Reconnect in 5s");
delay(5000);
}
}
void setup() {
Serial.begin(115200);
Serial.setTimeout(500);
setup_wifi();
client.setServer(mqtt_server, mqtt_port);
rzero = gasSensor.getRZero();
delay(3000);
Serial.print("MQ135 RZERO Calibration Value: ");
Serial.println(rzero);
}
void loop() {
if(!client.connected()){
mqtt_connect();
}
if(!client.loop()){
client.connect("ESpClient8266");
}
now = millis();
if(now-lastMeasure > 5000){
ppm = gasSensor.getPPM();
if(isnan(ppm)){
Serial.println("Failed to read MQ135 Sensor");
client.publish("/mq135/ppm","Failed to read sensor");
}
static char ppmTemp[7];
dtostrf(ppm,6,2,ppmTemp);
client.publish("/mq135/ppm",ppmTemp);
Serial.println("CO2 ppm value: ");
Serial.println(ppm);
delay(3000);
}
}
raspberry-pi-ir-sensor-entrance-gate-node-red-flow
JSONCopy the flow, and paste at Node-Red import > Clipboard
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0","property":"payload","propertyType":"msg","rules":[{"t":"eq","v":"0","vt":"num"}],"checkall":"true","repair":false,"outputs":1,"x":330,"y":120,"wires":[["5b80cf68.ef7c5"]]},{"id":"5b80cf68.ef7c5","type":"change","z":"1e50305d.a3e2f","name":"","rules":[{"t":"set","p":"payload","pt":"msg","to":"entrance","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":330,"y":160,"wires":[["67c6c2ff.061c9c","ea9014b0.4a60f8","916a8c7e.65c47","1559b6a5.733539"]]},{"id":"a6b60375.984ca8","type":"ui_template","z":"1e50305d.a3e2f","group":"ba957629.2b4f28","name":"Counter Widget","order":1,"width":"7","height":"6","format":"<div style=\"text-align:center;\">\n<h1>No. Customer in Permise</h1>\n<br/>\n\n<font size={{msg.size}} > {{msg.payload}} </font>\n</div>","storeOutMessages":true,"fwdInMessages":true,"resendOnRefresh":false,"templateScope":"local","x":1020,"y":180,"wires":[[]]},{"id":"916a8c7e.65c47","type":"function","z":"1e50305d.a3e2f","name":"set log","func":"var date = Date.now()\nvar createdAt = Date.now();\nvar gate = \"entrance\"\n\nmsg.payload =date+\"/\"+gate+\"/\"+createdAt;\nreturn msg;","outputs":1,"noerr":0,"x":570,"y":380,"wires":[["4df2e94e.11aa28"]]},{"id":"a7a4631b.31f44","type":"mqtt in","z":"1e50305d.a3e2f","name":"","topic":"pi/2/exit/1","qos":"1","datatype":"auto","broker":"53ab3d41.e551b4","x":120,"y":440,"wires":[["6c2c821e.f307cc","6dd8eb5b.e78c74"]]},{"id":"6c2c821e.f307cc","type":"debug","z":"1e50305d.a3e2f","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","x":310,"y":520,"wires":[]},{"id":"4df2e94e.11aa28","type":"file","z":"1e50305d.a3e2f","name":"","filename":"/home/pi/log/entrance-log.csv","appendNewline":true,"createDir":true,"overwriteFile":"false","encoding":"none","x":790,"y":380,"wires":[["656b9bd3.511b54"]]},{"id":"16906cdb.47ee93","type":"function","z":"1e50305d.a3e2f","name":"set count to payload","func":"msg.size = 80\nmsg.payload = msg.payload+\"/50 pax\"\nreturn msg","outputs":1,"noerr":0,"x":760,"y":180,"wires":[["e6bdc88a.c098f8","a6b60375.984ca8"]]},{"id":"e6bdc88a.c098f8","type":"debug","z":"1e50305d.a3e2f","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","x":950,"y":140,"wires":[]},{"id":"656b9bd3.511b54","type":"debug","z":"1e50305d.a3e2f","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","x":1010,"y":380,"wires":[]},{"id":"ad500107.84ccd","type":"mqtt in","z":"1e50305d.a3e2f","name":"","topic":"/mq135/ppm/section1","qos":"1","datatype":"utf8","broker":"53ab3d41.e551b4","x":160,"y":620,"wires":[["71657a33.78df04","75fb8365.f21b7c","6349519c.149d8","c4677a7f.25ce58"]]},{"id":"71657a33.78df04","type":"debug","z":"1e50305d.a3e2f","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","x":390,"y":620,"wires":[]},{"id":"ea9014b0.4a60f8","type":"function","z":"1e50305d.a3e2f","name":"function counter","func":"var counter = flow.get(\"counter\")||0\n\nif((msg.payload ===\"entrance\")&&(counter<50)){\n counter++\n}\nelse if((msg.payload===\"exit\")&&(counter>0)){\n counter--\n}\nelse if(msg.payload===\"reset\"){\n counter=0\n}\n\nflow.set(\"counter\",counter)\nmsg.payload = counter\n\nreturn msg","outputs":1,"noerr":0,"x":560,"y":180,"wires":[["16906cdb.47ee93"]]},{"id":"75fb8365.f21b7c","type":"ui_gauge","z":"1e50305d.a3e2f","name":"","group":"6d8e7178.80df1","order":1,"width":0,"height":0,"gtype":"gage","title":"C02 Level","label":"ppm","format":"{{value}}","min":"0","max":"1000","colors":["#00b500","#e6e600","#ca3838"],"seg1":"","seg2":"","x":390,"y":680,"wires":[]},{"id":"6349519c.149d8","type":"ui_chart","z":"1e50305d.a3e2f","name":"","group":"6d8e7178.80df1","order":3,"width":0,"height":0,"label":"CO2 PPM Chart","chartType":"line","legend":"false","xformat":"HH:mm:ss","interpolate":"linear","nodata":"","dot":false,"ymin":"0","ymax":"1000","removeOlder":1,"removeOlderPoints":"","removeOlderUnit":"3600","cutout":0,"useOneColor":false,"useUTC":false,"colors":["#1f77b4","#aec7e8","#ff7f0e","#2ca02c","#98df8a","#d62728","#ff9896","#9467bd","#c5b0d5"],"useOldStyle":false,"outputs":1,"x":400,"y":740,"wires":[[]]},{"id":"8841e283.24f81","type":"file","z":"1e50305d.a3e2f","name":"","filename":"/home/pi/log/air-quality.csv","appendNewline":true,"createDir":true,"overwriteFile":"false","encoding":"none","x":540,"y":800,"wires":[[]]},{"id":"c4677a7f.25ce58","type":"function","z":"1e50305d.a3e2f","name":"set log","func":"var date = Date.now()\nmsg.payload = date+\"/mq135/ppm/section1/\"+msg.payload\nreturn msg;","outputs":1,"noerr":0,"x":350,"y":800,"wires":[["8841e283.24f81"]]},{"id":"8789b2c7.02fe","type":"inject","z":"1e50305d.a3e2f","name":"","topic":"increment","payload":"entrance","payloadType":"str","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":130,"y":160,"wires":[["5b80cf68.ef7c5"]]},{"id":"66a72d5.db653d4","type":"inject","z":"1e50305d.a3e2f","name":"","topic":"decrement","payload":"exit","payloadType":"str","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":120,"y":360,"wires":[["6dd8eb5b.e78c74"]]},{"id":"6dd8eb5b.e78c74","type":"change","z":"1e50305d.a3e2f","name":"","rules":[{"t":"set","p":"payload","pt":"msg","to":"exit","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":350,"y":400,"wires":[["ea9014b0.4a60f8"]]},{"id":"9c31fbca.8b4948","type":"inject","z":"1e50305d.a3e2f","name":"","topic":"reset","payload":"reset","payloadType":"str","repeat":"86400","crontab":"","once":false,"onceDelay":0.1,"x":310,"y":220,"wires":[["ea9014b0.4a60f8"]]},{"id":"8c4c2b02.d842f8","type":"mqtt in","z":"1e50305d.a3e2f","name":"","topic":"/mq135/ppm/section2","qos":"1","datatype":"utf8","broker":"53ab3d41.e551b4","x":120,"y":900,"wires":[["f9f8b236.a9e","47ea6a65.75a8f4","1f943d43.eddfd3","4b2406ca.28a528"]]},{"id":"f9f8b236.a9e","type":"debug","z":"1e50305d.a3e2f","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","x":350,"y":900,"wires":[]},{"id":"47ea6a65.75a8f4","type":"ui_gauge","z":"1e50305d.a3e2f","name":"","group":"cb18c461.3ef6f8","order":1,"width":0,"height":0,"gtype":"gage","title":"C02 Level","label":"ppm","format":"{{value}}","min":"0","max":"1000","colors":["#00b500","#e6e600","#ca3838"],"seg1":"","seg2":"","x":350,"y":960,"wires":[]},{"id":"1f943d43.eddfd3","type":"ui_chart","z":"1e50305d.a3e2f","name":"","group":"cb18c461.3ef6f8","order":3,"width":0,"height":0,"label":"CO2 PPM Chart","chartType":"line","legend":"false","xformat":"HH:mm:ss","interpolate":"linear","nodata":"","dot":false,"ymin":"0","ymax":"1000","removeOlder":1,"removeOlderPoints":"","removeOlderUnit":"3600","cutout":0,"useOneColor":false,"useUTC":false,"colors":["#1f77b4","#aec7e8","#ff7f0e","#2ca02c","#98df8a","#d62728","#ff9896","#9467bd","#c5b0d5"],"useOldStyle":false,"outputs":1,"x":360,"y":1020,"wires":[[]]},{"id":"3009c8d1.bf5dc8","type":"file","z":"1e50305d.a3e2f","name":"","filename":"/home/pi/log/air-quality.csv","appendNewline":true,"createDir":true,"overwriteFile":"false","encoding":"none","x":520,"y":1080,"wires":[[]]},{"id":"4b2406ca.28a528","type":"function","z":"1e50305d.a3e2f","name":"set log","func":"var date = Date.now()\nmsg.payload = date+\"/mq135/ppm/section2/\"+msg.payload\nreturn msg;","outputs":1,"noerr":0,"x":310,"y":1080,"wires":[["3009c8d1.bf5dc8"]]},{"id":"1559b6a5.733539","type":"function","z":"1e50305d.a3e2f","name":"function total counter","func":"var total= flow.get(\"total\")||0\n\nif(msg.payload ===\"entrance\"){\n total++\n}\nelse if(msg.payload ===\"reset\"){\n total=0\n}\n\nflow.set(\"total\",total)\nmsg.payload = total\n\nreturn msg","outputs":1,"noerr":0,"x":600,"y":280,"wires":[["5ab2d5fc.8eb6dc"]]},{"id":"cfaf4709.1d8f28","type":"ui_template","z":"1e50305d.a3e2f","group":"ba957629.2b4f28","name":"Counter Widget","order":3,"width":"7","height":"6","format":"<div style=\"text-align:center;\">\n<h1>Total Customer Visited</h1>\n<br/>\n\n<font size={{msg.size}} > {{msg.payload}} </font>\n</div>","storeOutMessages":true,"fwdInMessages":true,"resendOnRefresh":false,"templateScope":"local","x":1060,"y":280,"wires":[[]]},{"id":"5ab2d5fc.8eb6dc","type":"function","z":"1e50305d.a3e2f","name":"add msg.size for font size","func":"msg.size = 80\nreturn msg","outputs":1,"noerr":0,"x":830,"y":280,"wires":[["cfaf4709.1d8f28","df6c20b5.6b4bf"]]},{"id":"df6c20b5.6b4bf","type":"debug","z":"1e50305d.a3e2f","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","x":1030,"y":320,"wires":[]},{"id":"ba957629.2b4f28","type":"ui_group","z":"","name":"Counter","tab":"82aa9dd6.c514","order":1,"disp":true,"width":"7","collapse":false},{"id":"53ab3d41.e551b4","type":"mqtt-broker","z":"","name":"","broker":"localhost","port":"1883","clientid":"","usetls":false,"compatmode":false,"keepalive":"60","cleansession":true,"birthTopic":"","birthQos":"0","birthPayload":"","closeTopic":"","closeQos":"0","closePayload":"","willTopic":"","willQos":"0","willPayload":""},{"id":"6d8e7178.80df1","type":"ui_group","z":"","name":"Vegetable Section","tab":"82aa9dd6.c514","order":2,"disp":true,"width":"6","collapse":false},{"id":"cb18c461.3ef6f8","type":"ui_group","z":"","name":"Instant Drink Section","tab":"82aa9dd6.c514","order":3,"disp":true,"width":"6","collapse":false},{"id":"82aa9dd6.c514","type":"ui_tab","z":"","name":"Shopping Mall Human Counter","icon":"Shopping Mall","disabled":false,"hidden":false}]
raspberry-pi-ir-sensor-exit-gate-node-red-flow-
JSONCopy the flow, and paste at Node-Red import > Clipboard
[{"id":"738b8376.f759ac","type":"debug","z":"e82eeb8d.5d3038","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","x":765.0000419616699,"y":200.00000953674316,"wires":[]},{"id":"70cfac26.2d3314","type":"switch","z":"e82eeb8d.5d3038","name":"!=msg.motion","property":"payload","propertyType":"msg","rules":[{"t":"neq","v":"motion","vt":"msg"}],"checkall":"true","repair":false,"outputs":1,"x":298,"y":57,"wires":[["6d50a86c.57a4c8","7d338535.abea8c"]]},{"id":"6d50a86c.57a4c8","type":"switch","z":"e82eeb8d.5d3038","name":"check ir is triggered","property":"payload","propertyType":"msg","rules":[{"t":"eq","v":"1","vt":"num"}],"checkall":"true","repair":false,"outputs":1,"x":540.0000762939453,"y":147.00000095367432,"wires":[["5d19a793.98b598","5aeb6975.9c5078"]]},{"id":"7d338535.abea8c","type":"function","z":"e82eeb8d.5d3038","name":"debounce message","func":"flow.set(\"motion\",msg.payload)\nreturn msg;","outputs":1,"noerr":0,"x":308.99999237060547,"y":99.00000190734863,"wires":[[]]},{"id":"5d19a793.98b598","type":"function","z":"e82eeb8d.5d3038","name":"set-message-log","func":"var date = Date.now()\nvar id = msg.payload.id\nmsg.payload = date+\"/\"+msg.topic+\"/exit/\"+msg.payload\nreturn msg;","outputs":1,"noerr":0,"x":548.5,"y":198,"wires":[["738b8376.f759ac","154e5ea0.ed7811"]]},{"id":"154e5ea0.ed7811","type":"file","z":"e82eeb8d.5d3038","name":"","filename":"/home/pi/log.csv","appendNewline":true,"createDir":false,"overwriteFile":"false","encoding":"utf8","x":737.01171875,"y":253.68359375,"wires":[["dff9f496.f48288"]]},{"id":"dff9f496.f48288","type":"debug","z":"e82eeb8d.5d3038","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","x":951.01953125,"y":255.00390625,"wires":[]},{"id":"75475f70.51048","type":"mqtt out","z":"e82eeb8d.5d3038","name":"","topic":"pi/2/exit/1","qos":"1","retain":"","broker":"b3f3aeb0.0845e","x":909.0117645263672,"y":36.6328125,"wires":[]},{"id":"5aeb6975.9c5078","type":"function","z":"e82eeb8d.5d3038","name":"mqtt-message","func":"msg.payload =+msg.topic+\"/exit/\"+msg.payload\nreturn msg;","outputs":1,"noerr":0,"x":678.0195388793945,"y":39.00391387939453,"wires":[["75475f70.51048"]]},{"id":"535c7e9d.66024","type":"rpi-gpio in","z":"e82eeb8d.5d3038","name":"","pin":"40","intype":"down","debounce":"25","read":false,"x":93.5,"y":80,"wires":[["70cfac26.2d3314"]]},{"id":"b3f3aeb0.0845e","type":"mqtt-broker","z":"","name":"","broker":"192.168.1.8","port":"1883","clientid":"","usetls":false,"compatmode":false,"keepalive":"60","cleansession":true,"birthTopic":"","birthQos":"0","birthPayload":"","closeTopic":"","closeQos":"0","closePayload":"","willTopic":"","willQos":"0","willPayload":""}]
3 projects • 0 followers
Freelance R&D Developer mainly focus in AR/VR and IOT Technologies
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