Sensor Micro Break Compensation via Trench Capacitor
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Solution Overview
Problem
Sensors in sensing systems face issues with power breaks, leading to erroneous or inaccurate measurements due to deviations in voltage and current supply, necessitating mechanisms to compensate for such interruptions.
Innovation Solution
A sensor system incorporating high voltage components, a charge storage component, and sensor and signal processing components, where the charge storage component, such as a trench capacitor, maintains and provides a low voltage supply during power breaks, and the high voltage components regulate and block reverse voltages, ensuring stable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a sensor system operates without power break compensation mechanisms, then the system structure remains simple and cost-effective, but measurement accuracy deteriorates due to voltage and current deviations during power interruptions
Solution Approach 1:
The patent applies preliminary action by implementing a power break detection mechanism that proactively identifies power interruptions before they affect sensor measurements. The system detects voltage drops or current deviations and activates compensation measures in advance, preventing measurement errors rather than correcting them after occurrence. This approach maintains measurement accuracy while avoiding overly complex post-processing correction systems.
Solution Approach 2:
The patent uses an intermediary power management component that sits between the power source and the sensor, detecting power breaks and providing compensated power or correction signals. This intermediary mechanism isolates the sensor from direct power fluctuations, maintaining measurement accuracy without requiring complex modifications to the sensor itself or the overall system architecture.
2Reliability
If power break compensation mechanisms are implemented, then measurement accuracy is maintained during power interruptions, but device complexity and cost increase
Solution Approach 1:
The patent merges the power break detection and compensation functions into existing system components rather than adding entirely separate mechanisms. The power management integrated circuit (PMIC) or voltage regulator is enhanced to include break detection and compensation capabilities, consolidating multiple functions into a single integrated component. This reduces overall device complexity while maintaining operational stability during power interruptions.
Solution Approach 2:
The patent implements multi-functional power management components that handle both normal power regulation and power break compensation within the same hardware block. The voltage regulator serves dual purposes: maintaining stable voltage during normal operation and detecting/compensating for power breaks when they occur. This universal approach improves reliability without proportionally increasing device complexity, as the same component structure serves multiple functions.
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 system effectively compensates for power breaks by maintaining a stable low voltage supply, preventing component failure and ensuring accurate measurements during temporary power interruptions, while integrating components to minimize size and cost.
Implementation Method 1
The charge storage component has a vertical capacitor, such as a trench capacitor
Data Source
AI summary
A sensor device includes a high voltage circuit, a sensor and a charge storage. The sensor utilizes a low voltage supply. The high voltage circuit includes a blocking device and a regulating device. The blocking device is configured to block negative voltages of the high voltage supply. The regulated device is configured to receive a high voltage supply and generate the low voltage supply from the high voltage supply. The high voltage supply is DC. The charge storage has a vertical capacitor and is configured to maintain the low voltage supply during a power break and to store and maintain charge during non-break periods.