Increasing wheatstone bridge sensitivity
Many physical variables of interest (movement, force, torque, power, pressure, flow or temperature) are usually measured with sensors whose output (of an electrical parameter) varies little with respect to those physical variables of interest. Thus, in order to have adequate accuracies and resolutio...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/427787 |
| Acceso en línea: | https://hdl.handle.net/2117/427787 https://dx.doi.org/10.1109/TIM.2025.3542674 |
| Access Level: | acceso abierto |
| Palabra clave: | Detectors Bridge circuits Sensitivity Resistors Sensors Topology MOSFET Voltage measurement Bridges Oscilloscopes Time measurement AC Bridge circuit Capacitive sensor Direct interface. resistive sensor Sensitivity analysis Square alternating signal Step function u(t) signal Wheatstone Bridge Circuits elèctrics Àrees temàtiques de la UPC::Enginyeria electrònica |
| Sumario: | Many physical variables of interest (movement, force, torque, power, pressure, flow or temperature) are usually measured with sensors whose output (of an electrical parameter) varies little with respect to those physical variables of interest. Thus, in order to have adequate accuracies and resolutions, it is usually configured in a differential way through an electrical circuit known as a Wheatstone Bridge. This paper presents a new Wheatstone Bridge topology that with square alternating signal excitation increases the traditional sensitivity in voltage difference in the two branches of the Bridge with a sensor element (e/4) to a sensitivity of (e/e), where (e) is the difference in the sensor (as per one) caused by the physical variable of interest. It is analyzed analytically, then simulated with calculation and finally measured in an ad-hoc set-up. |
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