Electronic Shifter Sensor Timing for Stable Voltage Detection
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Solution Overview
Problem
Conventional methods for preventing power supply voltage fluctuations in devices with multiple high-power loads fail to maintain stable sensor detection accuracy due to timing mismatches between load on/off cycles and sensor data acquisition.
Innovation Solution
An electronic device with a sensor control unit that synchronizes detection value acquisition with the drive cycle of a first load, ensuring stable power supply voltage by controlling the drive timing of both LED elements and a magnetic sensor, thereby preventing voltage fluctuations and ensuring accurate sensor readings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the drive timing of loads is set based on temperature detection to prevent power supply voltage fluctuations, then the power supply voltage stability is improved, but the sensor detection accuracy deteriorates due to timing mismatches between load on/off cycles and sensor data acquisition
Solution Approach 1:
The patent applies dynamics by making the sensor control timing adaptive to the drive cycle conditions. The sensor control unit dynamically adjusts its data acquisition timing based on the actual drive cycle of the load, rather than using fixed timing. This allows the system to maintain both voltage stability and detection accuracy by flexibly synchronizing sensor readings with periods when voltage fluctuations are minimal.
Solution Approach 2:
The patent implements feedback by having the sensor control unit acquire detection values in synchronization with the drive cycle. The control system continuously monitors the drive cycle status and adjusts sensor data acquisition timing accordingly. This feedback mechanism ensures that sensor readings are taken at optimal moments when power supply voltage is stable, thereby maintaining high detection accuracy while preserving voltage stability benefits.
2Speed
If sensor data acquisition is performed independently of the drive cycle, then the detection responsiveness is improved, but the detection accuracy deteriorates due to power supply voltage fluctuations during load switching
Solution Approach 1:
The patent applies periodic action by synchronizing sensor data acquisition with the periodic drive cycle of the load. Instead of continuous or independent sampling, the sensor control unit performs data acquisition at regular intervals that coincide with the drive cycle periods. This periodic synchronization ensures that readings are taken when voltage conditions are predictable and stable, maintaining both responsiveness and accuracy.
Solution Approach 2:
The patent implements preliminary action by pre-synchronizing the sensor data acquisition timing with the drive cycle before actual measurement occurs. The sensor control unit is configured to acquire detection values at predetermined timing points within the drive cycle, ensuring that measurements are taken proactively at optimal moments rather than reactively after voltage fluctuations have already affected the sensor readings.
Data Source
AI summary
An electronic device includes a sensor connected to a power supply, a first load connected to the power supply, a sensor control unit configured to control the sensor, and a drive control unit configured to control drive of the first load, wherein the sensor control unit is configured to acquire a detection value from the sensor in synchronization with a drive cycle by which the drive control unit performs drive control of the first load.