前言
node-red-contrib-buspro 是一个基于 Node-RED 平台,用于控制 HVAC(供热、供冷、通风空调) 等设备的 npm 包。它提供了一套易于使用、高度可定制的控制环境,并能够满足不同用户的需求。
本文将介绍 node-red-contrib-buspro 的安装和使用方法,并提供示例代码,以帮助读者快速上手。
安装
首先,你需要先安装 Node.js 和 Node-RED。安装方法可以参考官网指引(https://nodejs.org/ 和 https://nodered.org/ )。安装完成后,打开 Node-RED,在右上角的菜单中选择 “Manage palette” 选项,点击 “Install” 选项卡,然后搜索 “node-red-contrib-buspro” 包,点击安装即可。
使用
配置
在安装完 node-red-contrib-buspro 后,你需要配置它才能开始使用。打开 Node-RED,将布局中的 “buspro” 节点添加到画布中。然后,双击该节点进入节点配置页面。你需要设置以下参数:
- IP 地址:HVAC 的 IP 地址。
- 设备 ID:HVAC 的设备 ID。注意,这是所有命令的默认目标地址。
- 用于发送命令的快捷键:这个快捷键可以让你在流程中方便地发送命令。例如,你可以配置 F1 快捷键发送“开机”命令。
命令
设置完成后,您可以通过以下方式发送命令:
- 手动输入:在画布上将 buspro 节点连接到一个 debug 节点,设置 debug 节点输出类型为“完整消息”。然后,创建一个字符串类型的节点,并将它连接到 buspro 节点。在字符串节点中输入命令,例如“CH ON 1 25”,这个命令将打开通道 1,设置温度为 25 度。当你在字符串节点上按下快捷键时,会将命令发送到 HVAC。
- 通过流程自动发送:在画布上将 trigger 节点与 buspro 节点连接。在 trigger 节点上设置一个时间间隔触发器。在 buspro 节点上配置“命令行”参数,例如“CH ON 1 25”和“CH OFF 1”。这个流程将每隔一段时间发送一组命令。
示例代码
下面是一个示例流程,用于控制 HVAC 供热、供冷功能。
[{"id":"107c19a7.dff18c","type":"tab","label":"HVAC Control","disabled":false,"info":""},{"id":"4578cf5c.55db34","type":"debug","z":"107c19a7.dff18c","name":"Debug","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":710,"y":100,"wires":[]},{"id":"4e8da4da.4e98fc","type":"buspro","z":"107c19a7.dff18c","name":"HVAC Control","ip":"127.0.0.1","port":"6000","device":"0","commandKey":"F1","x":390,"y":100,"wires":[["4578cf5c.55db34"]]},{"id":"7e9bc2fb.d91fd","type":"inject","z":"107c19a7.dff18c","name":"Heat ON","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"CH ON 1 25","payloadType":"str","x":200,"y":60,"wires":[["4e8da4da.4e98fc"]],"icon":"font-awesome/fa-fire"},{"id":"ea2e5daf.7d839","type":"inject","z":"107c19a7.dff18c","name":"Heat OFF","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"CH OFF 1","payloadType":"str","x":200,"y":140,"wires":[["4e8da4da.4e98fc"]],"icon":"font-awesome/fa-fire"},{"id":"dcd97b0c.1a61b8","type":"inject","z":"107c19a7.dff18c","name":"Cool ON","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"CH ON 2 20","payloadType":"str","x":200,"y":220,"wires":[["4e8da4da.4e98fc"]],"icon":"font-awesome/fa-fire"},{"id":"c04b1dbf.c71c78","type":"inject","z":"107c19a7.dff18c","name":"Cool OFF","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"CH OFF 2","payloadType":"str","x":200,"y":300,"wires":[["4e8da4da.4e98fc"]],"icon":"font-awesome/fa-fire"}]
结论
本文介绍了如何安装和使用 node-red-contrib-buspro,以及如何在 Node-RED 中实现 HVAC 的控制。我们建议读者在实践过程中多尝试和学习,通过掌握和使用该技术,能够更好地应对 HVAC 等设备的控制需求。
来源:JavaScript中文网 ,转载请注明来源 https://www.javascriptcn.com/post/60066b5251ab1864dac668fc