Multi-Thermistor Temperature Sensing Circuit for Averaged Control
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Solution Overview
Problem
Existing temperature sensing circuits for devices lack efficient methods to accurately determine temperature across multiple thermistors, leading to potential inaccuracies in temperature measurement and control.
Innovation Solution
A temperature sensing circuit comprising a substrate material with multiple thermistors connected through conductive portions, providing a signal to a controller that calculates an average temperature, enabling precise temperature determination and control actions such as fan operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple thermistors are used to sense temperature at different locations, then temperature measurement accuracy is improved, but circuit complexity increases
Solution Approach 1:
Multiple thermistors are connected in parallel between the second conductive portion and third conductive portion, merging their sensing functions into a single circuit configuration. This allows temperature sensing from multiple locations while maintaining a relatively simple circuit structure that can be processed by a single controller
Solution Approach 2:
The temperature sensing circuit is designed to serve multiple functions: it senses temperature at multiple locations simultaneously, provides averaged temperature data for control decisions, and enables both monitoring and control functions through a unified circuit architecture
2Reliability
If an averaged temperature signal is provided to the controller, then reliable control decisions are improved, but information processing complexity increases
Solution Approach 1:
The circuit performs preliminary averaging of temperature signals from multiple thermistors before presenting the data to the controller. This pre-processing step consolidates multiple temperature readings into a single averaged value, reducing the computational burden on the controller while ensuring reliable control decisions based on comprehensive temperature data
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 solution enables accurate temperature measurement and control across devices like battery packs and power tools, ensuring reliable operation and safety by averaging temperature data from multiple thermistors and providing appropriate control signals.
Implementation Method 1
a plurality of thermistors associated with the substrate material for sensing a temperature associated with the device
Data Source
AI summary
Temperature sensing circuits for devices described herein include a substrate material, a first conductive portion, a second conductive portion, and a third conductive portion associated with the substrate material, and a plurality of thermistors associated with the substrate material for sensing a temperature associated with the device. The plurality of thermistors include a first thermistor and a second thermistor. The first thermistor is connected to the first conductive portion. The first thermistor and the second thermistor are both connected to the second conductive portion. The second thermistor is connected to the third conductive portion.