Wireless Sensor Data Transmission Using Differential Time-Series
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Solution Overview
Problem
Current wireless communication technologies for sensor data transmission in industrial settings face challenges with narrow communication bands, leading to reduced data accuracy and instability, making it difficult to collect sensor values with high precision and continuity.
Innovation Solution
A communication device that generates and transmits differential data, indicating the difference between basic and measurement data as time-series data, allowing for efficient data transmission with reduced data volume, while maintaining high resolution and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless communication is used to transmit sensor data, then wiring obstruction is eliminated and operational flexibility is improved, but communication bandwidth is limited and data transmission efficiency deteriorates
Solution Approach 1:
The patent extracts only the essential information from sensor data by calculating differences between consecutive measurement values. Instead of transmitting complete sensor data, only the change amount (difference value) is transmitted, significantly reducing communication bandwidth requirements while preserving operational flexibility of wireless communication
Solution Approach 2:
The patent transforms the data transmission approach by changing from transmitting absolute sensor values to transmitting difference values (relative changes). This parameter transformation reduces the amount of data to be transmitted over wireless communication channels, resolving the contradiction between wireless operational flexibility and data transmission efficiency
2Quantity of substance
If sensor resolution is reduced to decrease data amount, then communication bandwidth requirement is lowered, but measurement precision deteriorates
Solution Approach 1:
The patent extracts only the change amount (difference) between consecutive sensor measurements rather than transmitting complete high-resolution sensor values. This extraction approach significantly reduces data amount for wireless transmission while maintaining the precision of measurement changes, avoiding the need to reduce sensor resolution
3Quantity of substance
If difference between measurement value and previous measurement value is recorded, then data amount may be reduced, but data continuity is lost and original sensor value cannot be restored
Solution Approach 1:
The patent performs preliminary action by storing the initial sensor value before transmitting difference values. This preliminary storage of reference data enables reconstruction of original sensor values at the receiving end by accumulating difference values, thereby maintaining data continuity while reducing transmission data amount
Solution Approach 2:
The patent introduces an intermediary mechanism (difference value calculation and accumulation system) that bridges the transmitter and receiver. The receiver accumulates transmitted difference values to reconstruct original sensor values, acting as an intermediary process that preserves data continuity information without requiring transmission of complete original data streams
Data Source
AI summary
The disclosure is provided to transmit a sensor value from a sensor to an external device with high efficiency. A sensor value of a sensor is acquired, basic data as time-series data is generated with reference to the acquired sensor value, differential data indicating a difference between the basic data and measurement data as time-series data corresponding to the sensor value acquired from the sensor is generated, and the differential data is transmitted to an external device through wireless communication.