Sensor Device Signal Comparator Responsiveness
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Solution Overview
Problem
Existing sensor devices face reduced responsiveness due to longer output signal lengths required for abnormality determination of Hall elements, which increases transmission intervals and deteriorates device responsiveness.
Innovation Solution
Incorporating a sensor device with a main detector and a sub detector, a signal comparator that compares main and sub detection values, and a signal transmitter that generates an output signal including only the main signal when values match, reducing signal length and improving responsiveness without compromising reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two detection signals are transmitted by serial transmission for abnormality determination, then the reliability of detector abnormality detection is improved, but the output signal length increases and transmission interval increases, deteriorating responsiveness
Solution Approach 1:
The signal comparator performs preliminary comparison between main and sub detection signals before transmission, identifying matching signals in advance. This allows the system to transmit only necessary signals (main signal when matching, or main+sub signals when not matching), reducing average transmission length and improving responsiveness while maintaining abnormality detection reliability
Solution Approach 2:
The output signal configuration is made dynamic based on the comparison result. When detection values match, only the main signal is transmitted; when they don't match, both main and sub signals are transmitted. This dynamic adaptation optimizes transmission efficiency while ensuring reliability, directly resolving the contradiction between speed and reliability
Data Source
AI summary
A sensor device includes sensors and an Electronic Control Unit (ECU). The sensors include sensor elements, a signal comparator, and a signal transmitter. The signal comparator compares a first main detection value from one of the sensor elements, and a first sub detection value from the other of the sensor elements. When the first main detection value matches the first sub detection value, the signal transmitter generates and transmits an output signal that includes a first main signal corresponding to the first main detection value without including a first sub signal corresponding to the first sub detection value. In such manner, the responsiveness of the sensor device may be improved, without deteriorating a reliability of the output signals from the sensor sections.