ArticleSensors (Basel, Switzerland)2024
Two Proposals of a Simple Analog Conditioning Circuit for Remote Resistive Sensors with a Three-Wire Connection.
Article in Sensors (Basel, Switzerland), 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed, 20 citations in OpenAlex.
- A Multiplexable Op-Amp Interface for Accurate Readout of Remote Resistive Sensors.Sensors (Basel, Switzerland) · 2026Article
- The Realization of a Three-Dimensional Temperature Measurement System with a Two-Dimensional Sensor Array and the Demonstration of the Deformation Effect of Gravity on the Heating Patterns.Sensors (Basel, Switzerland) · 2025Article
- Intelligent Transducer for Temperature Measurement with Two-Wire or Three-Wire Platinum RTD.Sensors (Basel, Switzerland) · 2024Article
- A Tutorial on Mechanical Sensors in the 70th Anniversary of the Piezoresistive Effect.Sensors (Basel, Switzerland) · 2024Article
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Authors and funding
1 author at 1 institution in 1 country.
Funding
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Abstract
This article proposes and experimentally characterizes two implementations of a novel front-end circuit for three-wire connected resistive sensors with a wire-resistance compensation. The first implementation relies on two twin diodes, whereas the second on a switch; in both cases, those devices are non-remote (i.e., they are placed at the circuit end). The two circuit proposals have a square-wave input excitation so that a constant current with the two polarities is alternatively generated. Then, depending on that polarity, the current goes through either the sensor and the wire parasitic resistances or just the parasitic resistances. This generates a square-wave bipolar output signal whose average value, which is obtained by a low-pass filter, is proportional to the sensor resistance and only depends on the mismatch between two of the three wire resistances involved. Experimental tests applied to resistances related to a Pt100 thermal sensor show a remarkable linearity. For example, the switch-based front-end circuit offers a non-linearity error lower than 0.01% full-scale span, and this is practically insensitive to both the presence and the mismatch between the wire resistances.
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