IoT Relay Device Sensor Data Backup Priority Transmission
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Solution Overview
Problem
Conventional IoT gateways experience data loss and errors in data calculations due to temporary communication interruptions during poor radio wave conditions, leading to incorrect determination of abnormalities in manufacturing processes.
Innovation Solution
A relay device with a backup management unit, priority determination unit, and server communication unit that backs up sensor data and prioritizes its transmission based on server communication status, ensuring continuous data transmission and minimizing data loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cellular communication is used for data transmission from IoT gateway to server, then wireless communication capability is improved, but communication reliability deteriorates due to temporary interruptions in poor radio wave conditions
Solution Approach 1:
The gateway performs preliminary actions by storing sensor data locally in its memory before transmission to the server. When communication interruption occurs, the stored data is already available and can be transmitted immediately upon restoration without data loss, thus maintaining communication reliability while using wireless cellular communication.
2Loss of information
If sensor data is transmitted continuously to server, then data availability for calculation is improved, but data loss occurs during communication interruption periods
Solution Approach 1:
The gateway acts as an intermediary between the sensor and the server. It receives sensor data, stores it temporarily in its memory, and then transmits it to the server. This intermediary storage function ensures that data is not lost during communication interruptions, as the gateway can buffer the data and forward it when communication is restored.
3Adaptability or versatility
If communication interruption occurs, then wireless transmission flexibility is maintained, but data calculation accuracy deteriorates due to lost sensor data
Solution Approach 1:
The gateway performs preliminary action by pre-storing sensor data in its memory before transmission. This ensures that when communication is restored after an interruption, the data needed for accurate calculation is already available, preventing errors in statistical processing and abnormality determination at the server.
Data Source
AI summary
A relay device includes: a memory; and a hardware processor coupled to the memory. The hardware processor: receives data from a sensor; backs up the data from the sensor, in the memory, to store data failed to be transmitted to a server on a network; determines, based on a server communication status representing a state of data transmission to the server, a priority for data to be transmitted to the server among the data from the sensor and the backed-up data; transmits, to the server, data determined to have a highest priority among the data from the sensor and the backed-up data; and determines the server communication status based on whether communication with the server fails.