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3503 Wireless Gateway
The system gateway is the central bridge between any
3563 Analysis Vibration Sensor sensor and Accelix™ the cloud-based data platform.
The gateway collects measurement data from the sensors then transfers the data to
Accelix™. A single gateway communicates with up to 20 sensors. The gateway uses
a low energy wireless protocol to communicate with the sensor. Communication
between the gateway and Accelix™ is based on IoT technology (MQTT) and is
bidirectional. The measurement data collected by the sensor is processed in Accelix™.
Terminology
Accelix™ Data Platform – This is the platform that hosts the data lake, the
cloud server, and data services.
Bluetooth – This standardized protocol is fast, covers a long range (2.4 Ghz)
and has low power consumption.
IoT – Internet of Things: These are devices connected together over the
Internet. The connectivity allows the sharing of data between the devices.
MQTT – Message Queuing Telemetry Transport: This is the messaging
protocol used in this system.
MQTT is a lightweight protocol using a messaging technique with low
network and power usage.
Similar to other internet protocols, MQTT is based on clients and servers. The
server is responsible for handling client's request to send and receive data.
MQTT server is referred to as MQTT broker which is located within the
Data Platform. The MQTT client is located within the gateway.
When the gateway wants to send data to the broker, the action is referred to
as "publish".
When the gateway wants to receive data from the broker, the action is
referred to as "subscribe".
How the gateway works
To save energy, Bluetooth connection between the sensor and the gateway is
established only on demand. For example when a sensor is configured with a new
measure schedule, or if new measure data is to be transferred to the gateway. The
sensor can buffer a maximum of 18 sets of measured overall plus one set of measured
time waveform (TWF).
Before any vibration or temperature measurements may be taken, the gateway must
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Gateway Technical Data
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