Comparator Circuit Continuous Wake-Up Test for Sensor Start Cycles
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Solution Overview
Problem
Existing methods for checking the number of start-up cycles of detection devices in motor vehicles are insufficient, especially in autonomous driving modes where restarts significantly multiply the number of start-ups, making traditional specifications inadequate.
Innovation Solution
A checking apparatus and method utilizing a comparator circuit and an electrical switching device to perform a continuous wake-up test on the detection device, allowing for the reliable and efficient monitoring of start-up cycles without physically arranging the detection device on the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional start-up cycle checking methods are used, then the checking process is simple, but the checking time is too long and cannot keep up with significantly multiplied start-ups in autonomous driving modes
Solution Approach 1:
The patent implements a continuous wake-up test that continuously monitors the detection device without interruption. The comparator circuit continuously compares sensor signals against reference values, enabling uninterrupted monitoring of start-up cycles. This continuous operation allows the system to keep pace with significantly multiplied start-ups occurring in autonomous driving modes, resolving the contradiction between checking speed and checking time.
2Reliability
If the detection device is arranged on the motor vehicle for checking, then the checking reflects real operating conditions, but the checking process becomes complex and time-consuming
Solution Approach 1:
The patent creates a simplified test environment that copies the essential operational characteristics of the detection device without requiring the actual vehicle setup. The comparator circuit and electrical switching device replicate the functional behavior of the detection device in a controlled laboratory setting, maintaining checking accuracy while dramatically reducing system complexity and setup time.
3Productivity
If a continuous wake-up test is performed using a comparator circuit, then the number of start-up cycles can be checked quickly, but additional circuit components are required
Solution Approach 1:
The comparator circuit serves multiple functions simultaneously: it continuously monitors sensor signals, compares them against reference values, detects start-up events, and generates output signals for evaluation. This multi-functionality enables quick checking of start-up cycles while minimizing the number of separate components needed, as the comparator circuit replaces what would otherwise require multiple discrete monitoring and comparison devices.
Data Source
AI summary
A checking apparatus for checking a number of start-up cycles of a detection device of a motor vehicle includes an electrical switching device for providing an electrical sensor supply for the detection device and includes a contact device for electrically contacting the electrical switching device with the detection device. The electrical switching device has a comparator circuit and, by way of the comparator circuit, a continuous wake up test of the detection device is carried out and thus the number of start cycles is checked.