Electronic Device Frequency Control via Gravity and Pressure Sensors
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Solution Overview
Problem
Portable electronic devices, such as notebook computers, generate excessive heat when used for extended periods, leading to user discomfort and potential burns, as they often lack effective temperature regulation mechanisms.
Innovation Solution
Incorporating a gravity sensor and a pressure sensor to detect the usage situation of the device, automatically adjusting the processing unit's working frequency to reduce heat generation by decreasing or restoring the processing unit's frequency based on the detected gravity and pressure changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the processing unit operates at high working frequency to maintain productivity, then productivity is improved, but temperature increases causing user discomfort and potential burns
Solution Approach 1:
The patent applies dynamics by making the working frequency of the processing unit adjustable rather than fixed. The system dynamically changes the working frequency based on real-time detection of usage situations (device orientation, pressure, temperature) to balance productivity and temperature control. When the device is detected to be on a user's body, the frequency is reduced; when on a desktop, it returns to normal, achieving adaptive performance management.
2Temperature
If the working frequency is reduced to lower temperature, then temperature is improved, but productivity decreases
Solution Approach 1:
The patent implements feedback mechanisms through multiple sensors (gravity sensor, pressure sensor, temperature sensor) that continuously monitor device usage conditions and feed this information back to the processing unit. Based on this feedback, the system automatically adjusts the working frequency - reducing it when sensors detect the device is on a user's body (high pressure, specific orientation) and restoring it when on a desktop (low pressure, stable orientation), thus intelligently balancing temperature and productivity.
3Device complexity
If a single sensor is used to detect usage situation, then device complexity is reduced, but measurement precision decreases leading to misjudgments
Solution Approach 1:
The patent combines multiple sensors (gravity sensor, pressure sensor, and optionally temperature sensor) into an integrated usage situation detection system. Each sensor provides complementary information - the gravity sensor detects device orientation, the pressure sensor detects contact force, and the temperature sensor monitors thermal conditions. By merging their outputs, the system achieves high-precision usage situation recognition and avoids misjudgments that would occur with a single sensor, while the sensors are integrated into a unified control architecture.
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 effectively reduces user discomfort and prevents burns by dynamically managing the device's temperature, while improving detection accuracy and preventing misjudgments that could occur with single-sensor systems.
Implementation Method 1
The gravity sensor is configured to detect the gravity status of the electronic device and to output a plurality of gravity detecting signals
Implementation Method 2
the pressure sensor is configured to detect a pressure status of the bottom portion of the case and to output a plurality of pressure detecting signals
Data Source
AI summary
An electronic device and a work-frequency reducing method thereof are disclosed. The electronic device at least includes a case, a gravity sensor, a pressure sensor and a processing unit. The gravity sensor detects the gravity status of the electronic device and outputs a plurality of gravity detecting signals. The pressure sensor detects the pressure status of the bottom portion of the case and outputs a plurality of pressure detecting signals. The work-frequency reducing method includes the following steps: receiving the gravity detecting signals and judging whether the variation value of the gravity detecting signals is greater than a default gravity value or not; if yes, decreasing the working frequency of the processing unit; receiving the pressure detecting signals and judging whether the pressure detecting signals are greater than a default pressure value or not; and if no, restoring the working frequency of the processing unit.