USB Detection Module for Power and Data Management
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Solution Overview
Problem
Existing electronic systems with USB interfaces face challenges in integrating data transmission and charging functions, as they need to determine the power supplying status through transmission lines to avoid improper power supply and ensure successful operation of connected devices.
Innovation Solution
An electronic system with a detection module that determines the connection status between devices and external power through a transmission line with multiple terminals, allowing for selective power supply and data transmission based on connection status, using USB interfaces and a resistor to manage power distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a USB interface is used for both data transmission and power supply, then the versatility of the interface is improved, but the complexity of determining connection status and managing power distribution increases
Solution Approach 1:
The patent introduces a detection module as an intermediary component that mediates between the USB interface and the power management system. This module automatically detects connection status and triggers appropriate power supply actions, resolving the complexity by providing a dedicated detection mechanism rather than requiring complex control logic throughout the system.
Solution Approach 2:
The detection module performs preliminary detection of connection status before power supply is activated. By detecting whether a device is properly connected and whether external power is available in advance, the system prevents improper power distribution and ensures safe operation before actual power transmission begins.
2Power
If external power is always supplied through the transmission line, then the power supply capability is improved, but the risk of improper power supply causing damage increases
Solution Approach 1:
The detection module performs preliminary detection to identify potentially harmful conditions before power supply occurs. It detects whether external power is truly available and whether the connected device is ready to receive power, preventing harmful power distribution by taking preventive action before the harmful effect can occur.
Solution Approach 2:
The system implements feedback through the detection module that continuously monitors connection status and power availability. This feedback mechanism allows the system to adjust power supply decisions based on real-time conditions, ensuring power is only supplied when safe and appropriate, thereby preventing damage from improper power distribution.
3Measurement precision
If multiple connection terminals are used to detect device and power status, then the measurement precision of connection status is improved, but the device complexity increases
Solution Approach 1:
The detection module serves multiple functions using the same set of connection terminals. It can detect both device connection status and external power availability through the same USB interface pins, eliminating the need for separate dedicated detection terminals and reducing overall system complexity while maintaining high measurement precision.
Data Source
AI summary
An electric system includes a transmission line, a first and a second electronic devices, wherein the second electronic device selectively electrically connects to an external power. The transmission line includes a first connection terminal, a second and a third connection terminal, wherein the third connection terminal selectively electrically connects to the external power. The first electronic device includes a first electrical connection portion and a detection module. The first electrical connection portion electrically connects to the first connection terminal of the transmission line. The detection module connects to the first electrical connection portion, to determine whether the second connection terminal of the transmission line is electrically connected to the second electronic device, and determine whether the third connection terminal of the transmission line is electrically connected to an the external power, and performs an operation according to a connection status of the second connection terminal and the third connection terminal.