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Performance Verification of a Digital Interface Suitable for a Broad Class of Resistive Sensors

机译：适用于广泛电阻传感器的数字接口的性能验证

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摘要

An improved digital interface circuit for resistive sensors is proposed in this paper. The circuit offers many positive features, such as (1) use of single-reference voltage in its architecture, (2) facility to tune/preset the sensor-excitation current, even for different values of resistive sensors, (3) minimal dependence on many circuit non-ideal parameters. The working of the circuit is mathematically described in this paper, followed by its extensive error evaluation. Detailed simulation and experimental studies are performed to verify the feasibility of the interface for three different types of sensors. These studies show that the circuit can efficiently be used in temperature-monitors, magnetometers, and displacement-sensing. The maximum experimental nonlinearity observed from all of these sensor configurations does not exceed 0.06 %. Then, the extensive studies are carried out by simulation as well as experimentation to show the effect of environmental temperature changes on the proposed circuit. Finally, the proposed circuit is compared with some of the recent resistive digital interfaces.
机译：本文提出了一种改进的电阻传感器的数字接口电路。该电路提供了许多正面特征，例如（1）在其架构中使用单参考电压，（2）设施来调整/预设传感器激励电流，即使对于电阻传感器的不同值，（3）最小依赖许多电路非理想参数。在本文中，电路的工作在数学上描述，其次是其广泛的错误评估。进行详细的仿真和实验研究以验证界面的可行性，用于三种不同类型的传感器。这些研究表明，电路可以有效地用于温度监测器，磁力计和位移感测。从所有这些传感器配置中观察到的最大实验非线性不超过0.06％。然后，通过模拟和实验进行广泛的研究，以显示环境温度变化对所提出的电路的影响。最后，将所提出的电路与最近的一些电阻数字接口进行比较。

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