Heartbeat Signals for Isolation Channel Power Management
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Solution Overview
Problem
Existing isolation communication channels fail to effectively manage power conservation and fault detection between isolated electric circuits, leading to unnecessary power expenditure and potential system failures due to lack of real-time feedback on circuit operational status.
Innovation Solution
Implementing heartbeat signals across isolation communication channels to detect the operational status of each die, allowing the non-operational die to enter a low power mode, thereby conserving power and ensuring timely recovery upon restoration of functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous communication is maintained across isolation communication channels, then real-time operational status detection is achieved, but power consumption increases
Solution Approach 1:
The patent implements periodic heartbeat signals transmitted at defined intervals instead of continuous communication. Each die transmits a heartbeat signal periodically, and the absence of a heartbeat signal within a threshold period indicates a failure condition. This periodic approach maintains operational status detection capability while significantly reducing power consumption compared to continuous communication.
2Reliability
If isolation communication channels continuously monitor circuit status, then system reliability is improved, but unnecessary power expenditure occurs
Solution Approach 1:
The patent employs a feedback mechanism where each die monitors the presence or absence of heartbeat signals from the other die. When a heartbeat signal is absent for a threshold period, the receiving die enters a low-power mode. This feedback-driven approach ensures system reliability through continuous monitoring only when necessary, while eliminating unnecessary power expenditure by transitioning to low-power states when the other die is operational.
3Loss of time
If heartbeat signals are transmitted frequently, then fault detection speed is improved, but power consumption increases
Solution Approach 1:
The patent optimizes the heartbeat signal transmission frequency to balance fault detection speed and power consumption. The heartbeat signals are transmitted at a frequency that enables timely fault detection while maintaining power efficiency. The system adjusts operational parameters based on the detected presence or absence of heartbeat signals, entering low-power modes when appropriate to minimize energy usage while maintaining acceptable fault detection performance.
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
The proposed solution enables efficient power management by detecting the absence of heartbeat signals to initiate low power modes, reducing unnecessary power consumption and ensuring swift system recovery upon restoration of normal operation.
Implementation Method 1
The isolation communication channels may be implemented, e.g., using capacitive, inductive, or optical isolation techniques.
Implementation Method 2
The isolation communication channels may be implemented, e.g., using capacitive, inductive, or optical isolation techniques.
Implementation Method 3
The isolation communication channels may be implemented, e.g., using capacitive, inductive, or optical isolation techniques.
Data Source
AI summary
A first die is communicatively coupled to a first isolation communication channel and a second isolation communication channel and configured to send a first heartbeat signal over the first isolation communication channel. A second die is coupled to receive the first heartbeat signal from the first die over the first isolation communication channel and to supply a second heartbeat signal to the second isolation communication channel. The first die enters a first die low power mode responsive to detecting an absence of the second heartbeat signal and the second die enters a second die low power mode responsive to detecting an absence of the first heartbeat signal. The first and second die use low power oscillators in the low power mode to supply the heartbeat signals.