Wiper Control Testing via Dynamic Communication Speed Switching
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Solution Overview
Problem
The communication speed between wiper control devices and external test tools varies by specification, requiring different test devices for each type, leading to costly and laborious testing, with products having lower communication speeds requiring longer testing times.
Innovation Solution
A wiper control device that includes a test unit capable of communicating at a characteristic communication speed, allowing testing at a faster test communication speed, which includes activating the control section and transitioning to a test mode, enabling efficient testing within a specific duration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If communication is performed at the characteristic communication speed of the control section, then reliable communication is achieved, but testing time increases and productivity decreases
Solution Approach 1:
The patent applies dynamics by making the communication speed adjustable rather than fixed. The test unit can dynamically switch between the characteristic communication speed (for reliable communication during normal operation) and a faster test communication speed (for rapid testing). This dynamic speed adjustment resolves the contradiction by allowing the system to optimize for reliability during normal use and for productivity during testing phases.
2Adaptability or versatility
If different test devices are used for each specification of wiper control devices, then testing compatibility is achieved, but device complexity and cost increase
Solution Approach 1:
The patent applies universality by designing a single test unit that can handle multiple specifications of wiper control devices. The test unit is configured to communicate at the characteristic communication speed of the control section, allowing one universal test device to test various types of control devices. This eliminates the need for multiple specialized test devices, reducing device complexity and cost while maintaining testing compatibility across different specifications.
Data Source
AI summary
A control section is configured to perform rotation control of a wiper motor that causes a wiper blade to perform a wiping operation over a windshield, and a test unit is capable of communicating with the control section at a characteristic communication speed of the control section, and employs a specific communication with the control section at the characteristic communication speed to enable testing of the control section and the wiper motor by communication at a test communication speed of not less than the characteristic communication speed.