Overview

Function Description

LINK is a component of ROMA Connect. It connects to devices for easy management on cloud through MQTT. ROMA Connect has the following advantages for device integration:

• Standard MQTT protocols

  The open-source standard MQTT SDK is used to connect devices to the cloud for message publishing and subscription.

• Low-latency access for massive numbers of devices

  LINK supports horizontal expansion of Broker and long connections of millions of devices.

• Two-way synchronization between devices and applications

  LINK implements two-way synchronization of configuration and status data between devices and applications.

• Secure device information transmission

  LINK provides authorization certification for devices and applications and bidirectional binding authorization for topics to ensure device security and uniqueness. It provides TLS-based data transmission channels for secure message transmission.

Process Flow

The following figure shows the process of using ROMA Connect for device integration.

Figure 1 Process of using ROMA Connect for device integration

1. You have created an instance and an integration application.
2. Create a product.

   A product is a device model. You can define a product to determine the function attributes of devices. Each device belongs to a product.

3. Register a device.

   After a device is registered with ROMA Connect, a unique ID and key are allocated to the device to access LINK.

4. Configure a data forwarding rule.

   ROMA Connect does not directly store data reported by devices. You must configure data forwarding rules to forward device data to other services for storage. Data can be forwarded to ROMA MQS or other services such as Kafka and DIS.

5. Connect to devices.

   After being integrated with an MQTT client, a device can connect to ROMA Connect for reporting data and delivering commands.