Sensor Power Reset Control for Driving Support Continuity
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Solution Overview
Problem
Existing driving support systems face issues where resetting the power supply of multiple sensors due to a malfunctioning sensor affects the operation of other functional sensors, leading to disruption of driving support functions.
Innovation Solution
A power supply control apparatus that includes a malfunction determination unit, an operation determination unit, and a power supply control unit to selectively perform power supply resets of multiple sensors based on the operational status of other driving support functions and vehicle conditions, such as speed and direction, ensuring that critical functions are not disrupted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a common switch is used to control power supply to multiple sensors, then the number of switches is reduced, but power supply to non-malfunctioning sensors is temporarily cut off when resetting
Solution Approach 1:
The power supply control switch is divided into multiple independent switches, with each switch corresponding to a specific sensor. This segmentation allows individual sensor power supply control without affecting other sensors, resolving the contradiction between reducing switch quantity and maintaining system reliability during reset operations.
2Reliability
If power supply reset is performed on multiple sensors to recover from malfunction, then sensor detection reliability is improved, but driving support functions using other sensors are disrupted
Solution Approach 1:
The power supply control switch is divided into multiple independent switches, with each switch corresponding to a specific sensor. This segmentation allows individual sensor power supply control without affecting other sensors, resolving the contradiction between improving sensor reliability through reset and maintaining continuous operation of driving support functions.
3Reliability
If power supply is cut off and restored to reset a malfunctioning sensor, then sensor malfunction is recovered, but detection function is temporarily lost during reset process
Solution Approach 1:
The power supply control switch is divided into multiple independent switches, enabling isolated reset of malfunctioning sensors without affecting others. This reduces the overall time loss by allowing parallel operation of non-malfunctioning sensors and minimizing the scope of detection function interruption to only the specific sensor being reset.
Data Source
AI summary
The power supply control apparatus performs power supply control of a sensor used in the driving support apparatus. The power supply control apparatus comprises a power supply control unit. The power supply control unit performs power supply reset of a plurality of sensors when it is determined that one of the driving support functions other than one of the driving support functions using a malfunctioning sensor is in inoperative. The power supply control unit does not perform power supply reset of the plurality of sensors when it is determined that one of the driving support functions other than one of the driving support functions using the malfunctioning sensor is operative.