Arithmetic Apparatus Temperature Detection Mode Switching
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Solution Overview
Problem
Electronic equipment requiring temperature control faces challenges in continuing temperature detection while minimizing power consumption in power saving mode, as existing techniques fail to efficiently manage power usage without compromising detection accuracy.
Innovation Solution
An arithmetic apparatus with a temperature detection unit and two processing units operating on different voltages, switching between normal and power saving modes to maintain temperature detection while reducing power consumption, using a PMIC to generate and control voltages and a selector to route temperature detection results between the units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If temperature detection is continued in power saving mode, then temperature monitoring reliability is improved, but power consumption increases
Solution Approach 1:
The system segments the processing units into two distinct types: ASIC for normal operation and MCU for power saving mode. This segmentation allows each unit to be optimized for its specific function, with the ASIC handling high-performance tasks when power is abundant and the MCU handling essential temperature detection when power must be conserved, thus maintaining detection continuity while reducing overall power consumption.
Solution Approach 2:
The system dynamically switches between operating modes based on power availability. The operation mode switching mechanism allows the system to transition from ASIC-based operation to MCU-based operation in power saving mode, enabling continuous temperature detection while adapting power consumption levels to match available power supply conditions.
2Measurement precision
If ASIC is used for temperature detection, then detection precision is improved, but power consumption increases
Solution Approach 1:
The system applies local quality by assigning different processing capabilities to different operational contexts. The ASIC provides high-precision temperature detection when needed (normal mode), while the MCU provides sufficient precision for power saving mode requirements. This localized optimization ensures that precision is applied only where necessary, reducing overall power consumption while maintaining adequate detection accuracy in all modes.
Solution Approach 2:
The system changes operational parameters by switching between ASIC and MCU based on power mode requirements. In power saving mode, the MCU operates with adjusted parameters to maintain acceptable temperature detection precision while consuming significantly less power than the ASIC would require, thus achieving a balance between measurement precision and power consumption.
3Use of energy by moving object
If MCU is used in power saving mode, then power consumption is reduced, but detection capability may be compromised
Solution Approach 1:
The temperature detection unit serves as an intermediary between the MCU and the external environment, performing the actual temperature sensing function. This intermediary role allows the MCU to maintain detection capability while operating in a low-power state, as the detection unit can be designed to work efficiently with the MCU's limited processing resources without requiring the full power consumption of the ASIC.
Data Source
AI summary
An arithmetic apparatus that comprises a temperature detection unit and calculates a detection result obtained by the temperature detection unit, the apparatus comprising a first processing unit configured to perform arithmetic processing based on a first voltage, and a second processing unit configured to perform arithmetic processing based on a second voltage, wherein the apparatus includes, as operation modes, a first mode of supplying both the first voltage and the second voltage and a second mode of suppressing supply of the first voltage, and the temperature detection unit outputs a detection result to the first processing unit in the first mode and outputs a detection result to the second processing unit in the second mode.