基于压电换能器的运动称重面积估计电路

2021 28th IEEE International Conference on Electronics, Circuits, and Systems (ICECS) Pub Date : 2021-11-28 DOI:10.1109/icecs53924.2021.9665543

Zoi Agorastou, V. Gogolou, Konstantinos Kozalakis, S. Siskos

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引用次数: 0

摘要

提出了一种用于运动称重的超低功耗压电传感器接口电路。它针对道路监控应用中的能源自动车辆重量测量系统进行了优化，可以与任何类型和尺寸的压电装置结合使用。每当使用的压电传感器的输出电压超过预定义的阈值水平时，电路就被激活，测量检测到的脉冲的电压面积积分。一个低功耗的微控制器单元可以用于计算和使用获得的重量测量值。该电路由离散模拟电路组合实现，用于激活和持续时间单元，以及用于面积积分计算的集成电压-频率转换器。

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Area estimation circuit for Weigh-In-Motion applications using piezoelectric transducers

An ultra-low power, piezoelectric sensor interface circuit for Weigh-In-Motion applications is presented. It is optimized for energy-autonomous vehicle-weight measuring systems in road monitoring applications and can be combined with any type and size of piezoelectric device. Whenever the output voltage of the used piezoelectric sensor exceeds a predefined threshold level, the circuit is activated, measuring the voltage area integral of the detected pulse. A low-power microcontroller unit can be used for the calculation and use of the obtained weight measurements. The circuit was implemented with a combination of discrete analog circuits for the activation and duration units, as well as an integrated voltage-to-frequency converter for the area-integral calculation.

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来源期刊

2021 28th IEEE International Conference on Electronics, Circuits, and Systems (ICECS)

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