Threshold-Based Telemetric Data Exchange for Agricultural Machines
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Solution Overview
Problem
Current methods for telemetric data exchange between agricultural machines and master computers incur high costs due to frequent data transmission, especially in regions with poor internet connections, as they require transmitting all user data at short intervals to detect changes, leading to increased fees and computational effort.
Innovation Solution
A method where the on-board computer compares measured values with previous values and only transmits those that differ by a threshold value, reducing data transmission and allowing for more frequent recording without increasing fees, using a data packet structure with separators to indicate unchanged values and including timestamps for accurate data handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If user data is transmitted at short time intervals to detect changes frequently, then measurement precision is improved, but data transmission costs increase
Solution Approach 1:
The system changes the transmission parameter from fixed time interval to threshold-based triggering. Instead of transmitting data at every fixed interval, the system only transmits when the measured value changes by at least a predetermined threshold amount, thereby reducing unnecessary transmissions while maintaining detection precision for significant changes
Solution Approach 2:
The system applies partial action by transmitting only the necessary data portions. Rather than transmitting all measured values at every interval, it selectively transmits only those values that exceed the threshold change, reducing data volume while preserving critical information
2Loss of energy
If compression algorithms are used to reduce data volumes, then data transmission costs decrease, but device complexity increases
Solution Approach 1:
The system extracts only the essential information for transmission - specifically, only those measured values that change by at least the threshold amount. This extraction approach reduces data volume without requiring complex compression algorithms, thereby lowering transmission costs while avoiding the complexity burden
3Loss of energy
If longer time intervals are used for data recording, then data transmission costs decrease, but information content is reduced
Solution Approach 1:
The system changes the recording parameter from fixed time interval to threshold-based triggering. By setting an appropriate threshold value, the system can use longer effective intervals between transmissions while still capturing all significant changes in the measured values, thus maintaining information content while reducing transmission frequency and costs
Data Source
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AI summary
The present invention relates to a method for telemetric data exchange between at least one agricultural machine and a central computer, wherein the agricultural machine comprises an on-board computer with which user data is measured and transmitted to the central computer at fixed time intervals, wherein the measured value for a given user data point is compared with the previously recorded value for that user data point, and wherein the measured value is recorded as a new value and transmitted to the central computer only if it differs from the previously recorded value for the user data point by at least one threshold value. The present invention further relates to such an agricultural machine and to an arrangement comprising such an agricultural machine and a central computer.