Difference between revisions of "IoTGateway/Node-Red"

Revision as of 04:32, 16 March 2016

Advantech implements some Node-RED nodes for better development experience.

Node-RED for Alljoyn

We plan to provide three kinds of Node-RED nodes for Alljoyn feature.

• Action Handler
• Event Reader & Rule Engine
• ControlPanel Client

Installation

You can install the node-red-contrib-alljoyn via NPM, or download it on GitHub.

Usage

Please refer to README.

Demo

• Alljoyn ControlPanel and Action on Node-RED Demo

Node-RED for WSN

Wireless Sensor Network (WSN) is supported on Advantech IoT Gateway and all provided features are basically described by REST API respectively. For users to quickly access the WSN features and build the prototype control flow of application before knowing the detailed REST API manipulation and programming, we provide the following Node-RED nodes to easily read the information and access functions of WSN on Advantech IoT Gateway.

• wsn-gw
• wsn-senhub

Usage

1. In the browser, enter Advantech IoT Gateway's IP address with Node-RED port 1880 to open Node-RED web page.
2. On the left of the page, scroll down to find wsn-related nodes in Advantech section as depicted below.
3. Drag and drop wsn-related nodes into Sheet to start building control flow.

wsn-gw Node

Node to get the information and set functions of a Advantech WSN gateway platform, triggered by an input message. Outputs a msg with msg.payload containing the JSON description of reading or result. During configuration, it will automatically detect available options for Network, Category, and Attribute in real time.

Configuration

• Drag and drop wsn-gw node into Sheet
• Double click on the node to open Edit wsn-gw Node window for configuration as below
• Start from the top item in the window, it will automatically detect and list the available options currently.

Items in Edit Window

• Operation : Get or Set
• Net Type : Supported network types on the platform
• Net ID : List of available network interfaces of selected Net Type above. Options are listed in the format of :

• Category : Class of Attributes
• Attribute : List of Attributes in selected Category above
• Set to : Place for entering value when Operation is Set
• Name : (optional) Place for entering the name of this node

Example: Get SensorHub List

This example shows how to build a control flow to get a list of sensorhub MAC address on selected network interface.

1. Build a flow using inject as input node to wsn-gw node, and debug as output node.

2. Double click on wsn-gw node to open Edit wsn-gw node window and configure the node as below

3. Connect nodes together and click on Deploy

4. Click on the input node and you will see the result in debug window

5. The output in the debug window is a JSON format string describing the result

{ 
    "StatusCode": 200, 
    "Result": { 
        "n": "SenHubList", 
        "sv": "00170d0000603a0e,00170d0000602e5a,00170d0000304ab4,00170d000060339c", 
        "asm":	"r" 
    } 
}

wsn-senhub Node

Node to get the information and set functions of a remote SensorHub (ex. WISE-1020) controlled by Advantech WSN gateway platform, triggered by an input message. Outputs a msg with msg.payload containing the JSON description of reading or result. During configuration, it will automatically detect available options for Network, on-line sensorhub, and Attribute in real time.

Configuration

• Drag and drop wsn-senhub node into Sheet
• Double click on the node to open Edit wsn-senhub Node window for configuration as below
• Start from the top item in the window, it will automatically detect and list the available options currently.

Items in Edit Window

• Operation : Get or Set
• NetWork : List of available network interfaces. Options are listed in the format of :

• Sensor ID : List of available SensorHub MAC address on network interface selected above.
• Category : Class of Attributes
• Attribute : List of Attributes in selected Category above
• Set to : Place for entering value when Operation is Set
• Name : (optional) Place for entering the name of this node

Example: Get CO2 Reading

This example shows how to build a control flow to get CO2 sensor reading on selected sensorhub.

1. Build a flow using inject as input node to wsn-senhub node, and debug as output node.

2. Double click on wsn-senhub node to open Edit wsn-senhub node window and configure the node as below

3. Connect nodes together and click on Deploy

4. Click on the input node and you will see the result in debug window

5. The output in the debug window is a JSON format string describing the result

{ 
    "SttatusCode": 200, 
    "Result": { 
        "n":	"CO2", 
        "u":	"ppm", 
        "v":	722, 
        "min":	400, 
        "max": 2000, 
        "asm":	"r", 
        "type": "d", 
        "rt": "ucum.ppm", 
        "st":	"ipso", 
        "exten": "" 
    } 
}

WSN Sensor/Actuator Demo

Besides reading information, we can create more complex control flow using wsn-related nodes introduced above and native Node-RED nodes.

Here is a demo shows how to interact with sensor and actuator, and build a connection between them.

In this demo, a wsn-senhub node is used to retrieve the CO2 reading from a remote sensor hub. The CO2 reading is then verified by a pre-defined threshold value. The result of this judgement is then sent to a wsn-senhub node to turn on/off a fan controlled by another remote sensor hub.

The complete control flow of this demo is :

To see the demo video on youtube, go to youtube web page and search by the keyword Node-RED WSN senhub node Demo

Connect WSN node with Freeboard