Oscillator Temperature Compensation With External Sensor Correction
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Solution Overview
Problem
Circuit devices with oscillation circuits and temperature sensors face inefficiencies due to wasteful power consumption in correction circuits required for accurate temperature detection data output, leading to increased costs and reduced accuracy.
Innovation Solution
Incorporating an oscillation circuit, temperature sensor circuit, temperature compensation circuit, memory for storing correction data, and an interface circuit to output temperature detection and correction data, allowing external processing devices to correct temperature data minimally and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a correction circuit is provided inside the circuit device to correct temperature detection data, then accurate temperature detection data can be output to external processing devices, but power consumption increases due to the correction circuit operation
Solution Approach 1:
The patent extracts the correction function from the circuit device and relocates it to the external processing device. The circuit device only outputs raw temperature detection data and correction data through the interface circuit, while the actual correction calculation is performed externally, eliminating the need for an internal correction circuit and reducing power consumption.
Solution Approach 2:
The patent introduces correction data as an intermediary element that enables external processing devices to correct temperature detection data. This correction data serves as a mediator between the temperature sensor circuit and external processing devices, allowing accurate temperature detection without requiring a power-consuming correction circuit within the circuit device itself.
2Measurement precision
If a correction circuit is provided inside the circuit device, then temperature detection data can be corrected, but device complexity and cost increase
Solution Approach 1:
The correction circuit functionality is extracted from the circuit device and moved to external processing devices. This extraction simplifies the internal circuit structure of the circuit device while maintaining temperature detection accuracy through the use of correction data stored in memory and output via the interface circuit.
3Use of energy by moving object
If temperature detection data is output without correction, then power consumption is reduced, but measurement accuracy deteriorates
Solution Approach 1:
The patent uses correction data as an intermediary that enables accurate temperature detection without requiring active correction circuits. The correction data, stored in memory and output through the interface circuit, serves as a passive corrective element that improves measurement accuracy while consuming minimal power compared to active correction circuits.
Data Source
AI summary
A circuit device includes an oscillation circuit configured to generate an oscillation signal using a resonator, a temperature sensor circuit configured to output temperature detection data, a temperature compensation circuit configured to perform, based on the temperature detection data, temperature compensation on an oscillation frequency of the oscillation signal, a memory configured to store correction data for correcting the temperature detection data to obtain a temperature, and an interface circuit configured to output the temperature detection data and the correction data.