问题描述
我现在刚刚开始使用Thingsboard，遇到了这个东西， https://thingsboard.io/docs/iot-gateway/getting-started/.我已经实现了，但是我面临的问题是
I just now started using Thingsboard and I came across this one,https://thingsboard.io/docs/iot-gateway/getting-started/. I have implemented it but the problems that I'm facing are,
1.我只能传输一个键值对.如何传输多个键值传感器数据?
1.I can transmit only one Key-value pair. How can I transmit multiple key-value sensor data?
2.此外，如果还有其他方法可以访问Cassandra数据库，以便我可以将所有地雷数据检索到Thingsboard.
2.Also if there is any other way to access the Cassandra Database so that I can retrieve all mine data to Thingsboard.
请帮助.谢谢.
推荐答案
例如，湿度，温度，气体.
For example, humidity, temperature, gas.
在这种情况下，您使用一个访问令牌/单个mqtt会话并像这样在单个json中发送数据
In this case you use one access token/single mqtt session and send data in single json like this
{"humidity":42.2, "temperature":23.3, "gas":45}
如果您在单个设备上连接了多个传感器，请像这样发送它们
If you have multiple sensors attached to single device, send them like this
{"sensorA.humidity":42.2, "sensorB.temperature":23.3, "sensorC.gas":45}
可用的主题是静态的，并在此处列出: https://thingsboard.io/docs/reference/mqtt-api/#telemetry-upload-api
Available topics are static and listed here:https://thingsboard.io/docs/reference/mqtt-api/#telemetry-upload-api
这篇关于在IoT网关Thingsboard中发布多个数据的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！