Multi-Port Power Supply Circuit Using One-Wire Bus Allocation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing solutions for dynamic power allocation in electronic devices with multiple power supply ports require an additional central controller and a two-wire communication protocol, increasing the overall cost.
Innovation Solution
A processing circuit with N control modules connected to a one-wire bus, where each control module transmits value signals representing power supply information, allowing detection and adjustment of operating parameters without a central processor, using a one-wire bus connected to power line ground through a resistor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a central controller and two-wire communication protocol are used to obtain power supply information, then power allocation can be achieved, but the cost increases
Solution Approach 1:
Each control module independently detects the bus signal and determines power supply information without requiring a central controller. The control modules self-organize to achieve power allocation, eliminating the need for additional control hardware and reducing system cost while maintaining power allocation capability
Solution Approach 2:
The bus serves multiple functions: it acts as both a communication medium for transmitting power supply information and a reference voltage source for detection. This multi-functionality eliminates the need for separate communication controllers and reduces overall system complexity and cost
2Device complexity
If a one-wire bus is used instead of a two-wire communication bus, then cost is reduced, but communication capability must be maintained
Solution Approach 1:
The system changes the detection parameter from voltage to current. By detecting the current flowing through the resistor connected to the one-wire bus, the system can extract power supply information while maintaining communication capability with reduced hardware complexity
Solution Approach 2:
A resistor is introduced as an intermediary element between the one-wire bus and ground. This resistor enables current-based communication and information transmission over the single wire, maintaining communication capability while reducing hardware complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution reduces costs by eliminating the need for a central processor and bi-directional communication bus, enabling efficient dynamic power allocation among multiple power supply ports while simplifying the circuit and communication process.
Implementation Method 1
the bus is connected to a power line ground through a resistor
Data Source
AI summary
The present invention provides a processing circuit, a method, and an electronic device for multiple power supply ports. The processing circuit includes N control modules and a bus. Each control module is correspondingly connected to a power supply port. The communication interface of each control module is connected to the bus. The bus is a one-wire bus and is connected to a power line ground through a resistor. The control modules transmit value signals to the bus. The varied range of a first physical quantity of a bus signal carried by the bus is related to first physical quantities or second physical quantities of all target signals transmitted to the bus. The control module detects the first quantity of the bus signal through the communication interface and adjusts the operating parameter of the connected power supply port according to the varied range of the detected first physical quantity.