Remote Bus Enable via Voltage Regulator Switch
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Solution Overview
Problem
Conventional communication systems require direct power-up of the master device to enable bus communications, which can be inefficient and require extra wires or a separate bus system, especially when the master device is in a low-power mode.
Innovation Solution
The implementation of a remote bus enable system that allows a non-master device to wake up the master device using a voltage regulator and switch mechanism, enabling communications without the need for direct power-up, and utilizing a two-wire bus with a master transceiver, voltage regulator, and switch to facilitate low-power operation and fast communication resumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the master device is directly powered up to enable bus communications, then communication functionality is ensured, but power consumption increases and additional wiring is required
Solution Approach 1:
A voltage regulator is introduced as an intermediary component between the power source and the master device. The voltage regulator receives power from a first power source and provides regulated power to the master device, enabling remote wake-up functionality without requiring direct power-up control wiring. This mediator allows the master device to be activated remotely while maintaining reliable communication functionality.
2Reliability
If the master device is directly powered up to enable bus communications, then communication functionality is ensured, but device complexity increases due to extra wires or separate bus system
Solution Approach 1:
The voltage regulator is designed to serve multiple functions: it provides power regulation for the master device, enables remote wake-up capability, and eliminates the need for separate control wiring. By making the voltage regulator multi-functional, the system achieves reliable communication functionality without increasing wiring complexity or requiring a separate bus system for wake-up control.
3Use of energy by moving object
If the system enters low-power mode to save energy, then power consumption decreases, but communication resumption time increases
Solution Approach 1:
The voltage regulator is configured to receive power from a first power source and maintain readiness to activate the master device. When a wake-up signal is received, the voltage regulator can immediately provide power to the master device without delay. This preliminary setup of the power delivery path enables the system to enter low-power mode for energy savings while ensuring fast communication resumption when wake-up is needed.
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
Enables power savings by allowing the system to enter a low-power mode when not in use and quickly return to full communication, reducing power consumption and eliminating the need for additional wiring, while maintaining high-speed communication capabilities.
Implementation Method 1
a voltage regulator, wherein the voltage regulator has a voltage output and an enable input, and the voltage output is coupled to the master transceiver
Implementation Method 2
a switch coupled to the enable input of the voltage regulator
Data Source
AI summary
Disclosed herein are systems and techniques for remote bus enable. In some embodiments, a communication system with remote enable functionality may include: a master transceiver coupled to a downstream link of a bus; a voltage regulator, wherein the voltage regulator has a voltage output and an enable input, and the voltage output is coupled to the master transceiver; and a switch coupled to the enable input of the voltage regulator.