传感技术学报2017，Vol.30Issue(12)：1794-1799,6.DOI:10.3969/j.issn.1004-1699.2017.12.003
眼角膜超声测厚及眼压测量复合传感器设计
Design of Composite Sensor for Ultrasound Corneal Thickness and Intraocular Pressure Measurement
夏翎 1赵兴群1
作者信息
- 1. 东南大学生物科学与医学工程学院,南京210096
- 折叠
摘要
Abstract
Corneal thickness and intraocular pressure ( IOP ) are both the significant physiological parameters of the eyeball,and have great influence on the diagnosis of refractive errors, glaucoma and other eye diseases. The new kind of composite sensor could achieve a simultaneous measurement of the two parameters. The use of this sensor, on the one hand could improve the convenience of ophthalmic diagnosis,on the other hand could correct IOP based on corneal thickness. To complete the two measurements synchronously,the ultrasonic sensor and the electromagnet-ic-driven pressure control system were combined. Ultrasonic sensor used piezoelectric composite materials,and cor-neal thickness was measured with the high frequency ultrasonic pulse-echo. The structural and electromagnetic con-trol parameters in the electromagnetic drive system were got by electromagnetic functions,the electromagnetic force was controlled according to the actual needs of IOP measuring. The experimental results showed that the accuracy of corneal thickness measurement was within ± 10 μm;in the electromagnetic pressure control system, the pressure range was 0~0.490 N,the accuracy 0.0006 N. The accuracy and range of the composite sensor were in line with the standard of traditional corneal thickness measurement and tonometer. This study laid the foundation for the fur-ther development of two-in-one measuring ophthalmic instruments.关键词
医用传感器/眼角膜测厚/眼压测量/电磁压力控制Key words
medical sensor/corneal thickness measurement/intraocular pressure measurement/electromagnetic pressure control分类
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夏翎,赵兴群..眼角膜超声测厚及眼压测量复合传感器设计[J].传感技术学报,2017,30(12):1794-1799,6.
