Sensor Device Temperature Control via Wiring Resistance
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Solution Overview
Problem
Existing potential measurement devices face temperature fluctuations in the sensing region due to integrated heat-generating elements, affecting reaction speeds and living cell activity measurements.
Innovation Solution
A sensor device with an electrode array and wiring line layers in the same layer, utilizing a temperature determiner based on electric resistance to control the sensing region's temperature, ensuring accurate and stable measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple elements (electrode, amplifier, A/D converter) are integrated on a single substrate to enable multi-point potential measurement, then measurement capability is improved, but temperature stability deteriorates due to heat generation
Solution Approach 1:
The patent divides the integrated substrate into distinct functional regions: a measurement region containing electrodes for potential measurement and a control region containing temperature control elements. This spatial segmentation allows independent optimization of each region, enabling multi-point measurement while maintaining temperature stability through separate control mechanisms.
Solution Approach 2:
The patent introduces a temperature control element (such as a heater or Peltier element) as an intermediary component in the control region that actively regulates the temperature of the measurement region. This intermediary mechanism compensates for heat generated by integrated elements, maintaining temperature stability despite the integration of multiple functional components.
2Measurement precision
If temperature control is added to maintain stable measurement conditions, then measurement accuracy is improved, but device complexity increases
Solution Approach 1:
The patent combines the temperature control element with the existing substrate structure, integrating it into the same substrate as the measurement electrodes. The control element is designed to work in conjunction with existing components rather than adding entirely separate systems, thereby maintaining measurement accuracy while minimizing the increase in device complexity.
Solution Approach 2:
The substrate is designed to serve multiple functions: it acts as both the measurement platform for electrodes and the mounting structure for temperature control elements. This multi-functional design allows temperature control to be implemented without requiring entirely separate components, reducing overall device complexity while maintaining measurement precision.
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 allows for precise temperature control of the sensing region, stabilizing measurements and maintaining optimal conditions for living cell activity.
Implementation Method 1
a temperature determiner that determines a temperature of the sensing region on the basis of an electric resistance of the wiring line layer
Data Source
AI summary
To provide a sensor device and a measurement apparatus that are able to appropriately control a temperature of a sensing region where a potential is measured. Provided is a sensor device that includes an electrode array exposed to a sensing region, at least one or more wiring line layers provided in a layer same as the electrode array, a temperature determiner that determines a temperature of the sensing region on the basis of an electric resistance of the wiring line layer, and a temperature controller that controls the temperature of the sensing region on the basis of the temperature of the sensing region determined by the temperature determiner.