Data Transmission Device Threshold Sampling Rate Switching
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Solution Overview
Problem
Existing data transmission methods in sensor networks face challenges in efficiently acquiring and transmitting data before a threshold value is exceeded, as they either result in excessive data transmission or limited data availability due to buffer size constraints.
Innovation Solution
A data transmission device that switches between low and high sampling rates based on threshold conditions, storing data at a low sampling rate until the threshold is exceeded, then transmitting batched data and continuing with real-time high sampling rate transmission, allowing for interpolation to maintain data integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If data is transmitted only after exceeding a threshold value, then data transmission volume is reduced, but data before the threshold value is exceeded cannot be obtained
Solution Approach 1:
The system performs preliminary actions by storing measurement data in a buffer before the threshold is exceeded, and transmits this stored data immediately when the threshold condition is met. This preliminary storage action ensures that no data before the threshold is lost, while still reducing overall transmission volume by only triggering transmission when necessary.
Solution Approach 2:
A buffer serves as an intermediary component between the measurement data source and the transmission system. The buffer temporarily holds measurement data, allowing the system to accumulate data before threshold violation and transmit it in batches, thus resolving the contradiction between reducing transmission volume and preserving data availability.
2Loss of information
If a buffer of predetermined size is used to store measurement data, then data before threshold violation can be obtained, but the obtainable data amount is limited to buffer size
Solution Approach 1:
The system dynamically adjusts the buffer utilization based on the threshold condition. When the threshold is not exceeded, the buffer accumulates data; when the threshold is exceeded, the system transmits the accumulated data and resets the buffer. This dynamic operation allows the buffer to effectively store more data over time rather than being limited by its fixed size at any single moment.
Solution Approach 2:
The system employs periodic action by transmitting buffer data in batches when the threshold condition is periodically checked and met. This periodic transmission approach allows the buffer to be reused multiple times, effectively increasing the total data storage capacity beyond the physical buffer size by cycling through multiple accumulation and transmission cycles.
3Stability of the object's composition
If measurement data is acquired at a constant rate, then data continuity is maintained, but the amount of data to be transmitted becomes huge
Solution Approach 1:
The system segments the continuous data stream into buffer units that are transmitted together in batches when the threshold condition is met. This segmentation approach maintains data continuity within each buffer segment while reducing the total transmission volume by consolidating multiple data points into single transmission events, rather than transmitting each data point individually.
Solution Approach 2:
The system changes the transmission parameter from continuous transmission to conditional batch transmission. By modifying the transmission behavior based on the threshold parameter, the system maintains data continuity through consistent measurement at constant rate while dramatically reducing transmission volume by only transmitting when the threshold condition changes.
Data Source
AI summary
According to one embodiment, a data transmission device, includes: a wireless transmitting circuitry transmitting a wireless signal; measurement circuitry measuring a state of a measurement target at a first sampling rate and acquiring a first measurement value of the state of the measurement target; and controlling circuitry determining whether the first measurement value satisfies a first condition based on a first threshold value. The wireless transmitting circuitry transmits the plurality of first measurement values acquired before the first condition is satisfied when the first condition is satisfied. The measurement circuitry switches the first sampling rate to a second sampling rate higher than the first sampling rate when the first condition is satisfied, measures a state of the measurement target at the second sampling rate, and acquires a second measurement value of the state of the measurement target. The wireless transmitting circuitry transmits the second measurement value.