- thingsboard.yml端口1883
- 服务器防火墙开启1883端口
- mqtt消息发送，代码来自互联网：脚本地址 https://blog.csdn.net/ieflex/article/details/97149225
//Requires node.js and mqtt library installed.
var mqtt = require('mqtt');
const thingsboardHost = "192.168.198.224";
// Reads the access token from arguments
const accessToken = process.argv[2];
const minTemperature = 17.5,
maxTemperature = 30,
minHumidity = 12,
maxHumidity = 90;
// Initialization of temperature and humidity data with random values
var data = {
temperature: minTemperature + (maxTemperature - minTemperature) * Math.random(),
humidity: minHumidity + (maxHumidity - minHumidity) * Math.random()
};
// Initialization of mqtt client using Thingsboard host and device access token
console.log('Connecting to: %s using access token: %s', thingsboardHost, accessToken);
var client = mqtt.connect('mqtt://' + thingsboardHost, {
username: accessToken
});
// Triggers when client is successfully connected to the Thingsboard server
client.on('connect', function() {
console.log('Client connected!');
// Uploads firmware version as device attribute using 'v1/devices/me/attributes' MQTT topic
client.publish('v1/devices/me/attributes', JSON.stringify({
"firmware_version": "1.0.1"
}));
// Schedules telemetry data upload once per second
console.log('Uploading temperature and humidity data once per second...');
setInterval(publishTelemetry, 1000);
});
// Uploads telemetry data using 'v1/devices/me/telemetry' MQTT topic
function publishTelemetry() {
data.temperature = genNextValue(data.temperature, minTemperature, maxTemperature);
data.humidity = genNextValue(data.humidity, minHumidity, maxHumidity);
client.publish('v1/devices/me/telemetry', JSON.stringify(data));
}
// Generates new random value that is within 3% range from previous value
function genNextValue(prevValue, min, max) {
var value = prevValue + ((max - min) * (Math.random() - 0.5)) * 0.03;
value = Math.max(min, Math.min(max, value));
return Math.round(value * 10) / 10;
}
//Catches ctrl+c event
process.on('SIGINT', function() {
console.log();
console.log('Disconnecting...');
client.end();
console.log('Exited!');
process.exit(2);
});
//Catches uncaught exceptions
process.on('uncaughtException', function(e) {
console.log('Uncaught Exception...');
console.log(e.stack);
process.exit(99);
});
- 使用node执行js脚本发送模拟数据,6r983jTRLUpfsmoROnPt为设备令牌
node emulator_pub.js 6r983jTRLUpfsmoROnPt
- 使用仪表板查看数据
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Original: https://www.cnblogs.com/defineconst/p/15963608.html
Author: 咸鱼翻身
Title: 【IoT】thingsboard3.3.3测试，使用node-mqtt发送消息
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