Rotary Measurement Signal Processing with Coprime Message Sequences
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Solution Overview
Problem
Existing rotation measuring devices and systems suffer from high error susceptibility and inadequate diagnostic capabilities during signal processing, particularly in vehicles.
Innovation Solution
The implementation of a signal processing device that generates message sequences where the number of messages and the number of features are relatively prime to each other, ensuring a changing assignment between messages and measurement features with each rotation, thereby reducing error susceptibility and improving diagnostic capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the number of messages in a message sequence is equal to or a multiple of the number of measuring features, then the signal processing is simpler and more regular, but the same measurement features are repeatedly evaluated and errors remain undetected
Solution Approach 1:
The patent applies asymmetry by deliberately choosing message sequence lengths that are not multiples of the number of measuring features. Specifically, it uses message counts that are coprime to the feature count, creating an asymmetric relationship that ensures all features are evaluated across different positions in the sequence, thereby enabling error detection while managing complexity through mathematical properties.
Solution Approach 2:
The patent implements preliminary action by pre-calculating and storing valid message sequences with coprime lengths before operation. This allows the system to quickly select appropriate sequences during runtime without complex real-time calculations, resolving the contradiction between reliability improvement and operational complexity.
2Productivity
If message sequences are designed with fixed patterns for simplicity, then processing is more efficient, but diagnostic capabilities are insufficient
Solution Approach 1:
The patent changes the parameter of message sequence length from fixed multiples to variable coprime values. This parameter change allows the system to maintain efficient processing through pre-defined sequences while simultaneously improving diagnostic capabilities by ensuring diverse feature evaluation patterns that reveal errors and anomalies.
3Stability of the object's composition
If the same measurement features are repeatedly evaluated in fixed positions, then the data protocol is more consistent, but errors in measurement features remain undetected
Solution Approach 1:
The patent implements periodic action through cyclic message sequences with coprime lengths. This creates a systematic pattern where each measurement feature is evaluated at different positions in successive cycles, maintaining protocol consistency through repetition while enabling error detection through positional variation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces error detection in rotation measuring devices by ensuring all measurement features are recorded and allows for early detection of defects, enhancing safety and reliability in vehicles.
Implementation Method 1
A Hall sensor advantageously enables reliable position determination regardless of the speed, especially when the rotating part is stationary or rotates relatively slowly
Data Source
Figure 1~2A
Figure 2B~3
Figure 4~5B
AI summary
The invention relates to a signal processing device (260), preferably for a vehicle (1000), for processing a signal for a rotary measuring device (200) comprising a rotary measuring sensor (220) and a rotary measurement body (240). The rotary measurement body (240) has a number (AM) of measurement features (250), wherein - the signal processing device (260) is designed to provide chronologically successive message sequences (110) in order to process a signal, - a message sequence (110) has a number (A) of successive messages (120) such that chronologically successive messages (120) are assigned to locally adjacent measurement features (250) which interact with the rotary measuring sensor (220) one after the other chronologically and such that each message (120) is provided in a message type (NT, C, T, P) selected from a specified number of message types, and - a message (120) arranged at a defined sequence position (PSF) of the message sequence (110) is a message of a specified type (123) which describes a feature property (280) of the assigned measurement feature (250). According to the invention, the signal processing device (260) is designed to generate the message sequences (110) such that the number (AN) of messages and the number (AM) of features are relatively prime.