Reset Circuit Using Long-Press Detection to Prevent False Triggering
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Solution Overview
Problem
Existing electronic devices often require inconvenient external tools or additional buttons for reset functions, which can lead to design issues and false triggering.
Innovation Solution
A reset circuit incorporating a charging circuit, driving circuit, and execution circuit, integrated with a control port and reset port, allowing for a button or knob operation to generate a reset signal without external tools, using capacitors and MOS transistors for signal amplification and threshold detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate reset button is added to achieve reset function, then the reset function can be triggered, but the device appearance is affected and false triggering occurs easily
Solution Approach 1:
The patent combines the reset function with an existing power button by adding a long-press detection circuit. The power button structure is merged with reset functionality, where pressing and holding the power button for a specific duration (e.g., 3 seconds) triggers the reset function. This eliminates the need for a separate reset button, maintaining device appearance while preventing false triggering through duration-based authentication.
Solution Approach 2:
The power button is given multiple functions: normal pressing for power control and long-pressing for reset function. This multi-functional design allows a single button to serve both power management and system reset purposes, reducing the total number of buttons while maintaining reliable reset capability through the long-press mechanism.
2Reliability
If a reset hole is used for reset function, then the reset can be triggered, but external tools are required making operation inconvenient
Solution Approach 1:
The reset function is merged with the power button operation. Users can trigger reset by pressing and holding the power button for a specified duration, eliminating the need for a separate reset hole and external tools. This integration makes the reset operation as convenient as the power button operation itself.
Solution Approach 2:
The device uses its own existing button (power button) to perform the reset function, eliminating the need for external tools. The long-press detection circuit within the device automatically recognizes the user's intent to reset when the button is held for the required duration, making the system self-sufficient for reset operations.
3Ease of operation
If additional buttons are added for reset function, then the reset operation becomes accessible, but the device appearance and design are affected
Solution Approach 1:
The reset function is combined with the existing power button, which is already part of the device's standard interface. This merging approach provides accessible reset functionality without adding any new physical elements that would affect the device's appearance or design aesthetics.
Solution Approach 2:
The power button serves dual purposes: normal pressing for power control and long-pressing for reset. This multi-functionality ensures that reset accessibility is achieved without requiring additional buttons or physical features, thereby preserving the device's original appearance and design integrity.
Data Source
AI summary
Provided is a reset circuit including a charging circuit, a driving circuit, and an execution circuit. The charging circuit is configured to, after a first voltage signal provided by a control port is received, generate a second voltage signal. The driving circuit is configured to amplify the second voltage signal, and output the amplified second voltage signal to an execution circuit, after it is detected that a value of the second voltage signal reaches a preset value. The execution circuit is configured to, after the amplified second voltage signal is received, generate a reset signal, and transfer the reset signal to a reset port. Further provided is an electronic device, which includes the foregoing reset circuit, a button, and a microcontroller.