测试科学与仪器2024，Vol.15Issue(1)：105-119,15.DOI:10.62756/jmsi.1674-8042.2024011
一种研究线性霍尔传感器频率响应特性的测试平台
A testing platform for frequency response characteristics of linear Hall sensors
摘要
Abstract
Linear Hall sensors are widely used to measure magnetic field strength, but there are few studies on the dynamic response characteristics of Hall sensors. To tackle this issue, a testing platform for the frequency response characteristics of linear Hall sensors was built, which was composed of a controllable constant current source, coils, linear Hall sensors, a low noise amplifier, and a data acquisition device. The system transfer function was constructed and a method of dynamically updating the transfer function was proposed, which realizes the accurate measurement of the dynamic response characteristics of Hall sensors. The dynamic characteristics of NHE520F and P3A were tested on this platform. The results showed that the performance differences in amplitude-frequency and phase-frequency characteristics of these Hall sensors in the range of 2.5 kHz - 2 MHz were fully reflected on this testing platform. The dynamic characteristic parameters of Hall sensors were not necessarily consistent with the static characteristic parameters of Hall sensors, and the distributions of dynamic characteristics were also different. Additionally, according to the amplitude-frequency and phase-frequency characteristics of Hall sensors measured under various temperature and humidity conditions, the average dynamic characteristic curves and three standard deviation envelope curves of Hall sensors were plotted. The data obtained by this testing platform are of great significance for the research of dynamic response characteristics of Hall sensors.关键词
霍尔传感器/磁场测量/幅频特性/相频特性Key words
Hall sensor/magnetic field measurement/amplitude-frequency characteristics/phase-frequency characteristics引用本文复制引用
刘宇,胡亮亮,廖明照,周儒,徐进章..一种研究线性霍尔传感器频率响应特性的测试平台[J].测试科学与仪器,2024,15(1):105-119,15.基金项目
This work was supported by the University Synergy Innovation Program of Anhui Province(No.GXXT-2022-011) （No.GXXT-2022-011）
The Fundamental Research Funds for the Central Universities(No.JZ2022HGQA0203) （No.JZ2022HGQA0203）
And National Natural Science Foundation of China(No.12075072). （No.12075072）
