Current Sensor Calibration Trigger Circuit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current sensor calibration in power distribution networks for computing devices is often performed periodically or in response to specific events, which can cause downtime and increased processor load, and may not account for real-time temperature and voltage changes effectively.
Innovation Solution
A current sensor controller that receives temperature and voltage signals to determine if thresholds are exceeded, triggering a hardware-based calibration of the current sensor, allowing for faster and more accurate trimming operations without relying solely on software-driven processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If software-based periodic calibration is used, then calibration is performed regularly, but processor load increases and calibration may not account for real-time temperature and voltage changes
Solution Approach 1:
The patent replaces software-based calibration triggering with a hardware-based solution. A calibration trigger circuit monitors temperature and voltage signals and automatically generates calibration trigger signals when thresholds are exceeded, eliminating the need for software polling and reducing processor load while ensuring timely calibration under critical conditions
Solution Approach 2:
The calibration system becomes self-service by automatically detecting when calibration is needed through hardware monitoring of temperature and voltage conditions. The trigger circuit autonomously generates calibration requests without software intervention, enabling the system to self-regulate calibration timing based on actual operating conditions
2Reliability
If software-driven calibration triggering is used, then calibration can be performed, but response time to temperature and voltage changes is delayed
Solution Approach 1:
The patent replaces software-based calibration triggering with a hardware-based solution. A calibration trigger circuit monitors temperature and voltage signals and automatically generates calibration trigger signals when thresholds are exceeded, eliminating the need for software polling and reducing processor load while ensuring timely calibration under critical conditions
3Measurement precision
If calibration is performed frequently to maintain accuracy, then sensor precision is improved, but device downtime increases
Solution Approach 1:
The patent implements dynamic calibration triggering based on actual operating conditions. Instead of fixed periodic calibration, the system continuously monitors temperature and voltage and triggers calibration only when thresholds are exceeded, adapting the calibration schedule to real-time conditions and minimizing unnecessary calibration events that would cause downtime
Solution Approach 2:
The patent changes the calibration trigger parameter from time-based to condition-based. By monitoring temperature and voltage parameters and triggering calibration when these parameters exceed specific thresholds, the system ensures accuracy is maintained only when environmental conditions actually affect sensor performance, reducing unnecessary calibration events
Data Source
AI summary
Aspects relate to a calibration trigger for a current sensor of a computing device. In one example, a current sensor controller is configured to receive a temperature signal representing a measured temperature of a computing device. A comparator is configured to determine if the temperature signal exceeds a temperature threshold. A logic gate is configured to trigger a calibration of a current sensor coupled to the computing device in response to the temperature true signal exceeding the threshold.