A Design Method for a Microwave-Based Moisture Sensing System for Granular Materials in Arbitrarily Shaped Containers

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Jiarasuwan S., Chamnongthai K., Kittiamornkul N.

ผู้เผยแพร่: Institute of Electrical and Electronics Engineers

ปีที่เผยแพร่ (ค.ศ.): 2021

วารสาร: IEEE Sensors Journal (1530-437X)

Volume number: 21

Issue number: 17

หน้าแรก: 19436

หน้าสุดท้าย: 19452

จำนวนหน้า: 17

นอก: 1530-437X

eISSN: 1558-1748

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85111014695&doi=10.1109%2fJSEN.2021.3087414&partnerID=40&md5=2b11a4d7a5be0b4434087f2e1c7bb48c

ภาษา: English-Great Britain (EN-GB)

ดูในเว็บของวิทยาศาสตร์ | ดูบนเว็บไซต์ของสำนักพิมพ์ | บทความในเว็บของวิทยาศาสตร์

บทคัดย่อ

To estimate the moisture in an entire arbitrarily shaped workpiece, an automatic system should continuously sense moisture at all points of the workpiece. This paper proposes a design method for a microwave-based moisture sensing system for granular materials in arbitrarily shaped containers based on scanning in a moisture sensing box. The size of the moisture sensing box is first determined as the maximum size of any granular material containers based on the initial user requirements. The moisture sensing system physically consists of a pair of antennas for the microwave transmission and reception and a pair of distance sensors to scan throughout the maximum scanning range of the moisture sensing box to find the attenuation and workpiece thickness at all points of the workpiece. Then, these sensed microwave attenuations and measured workpiece thicknesses are used to calculate the moisture at all points of the workpiece. Finally, the average moisture of all points is taken as the estimated moisture of the entire workpiece. To evaluate the performance of the proposed system, experiments were performed with granular materials in containers of various shapes. The estimation results show that the proposed method of continuous moisture scanning of a workpiece can improve accuracy by approximately 7.77% compared to the antenna array approach. © 2001-2012 IEEE.

คำสำคัญ

arbitrarily shaped container, granular materials, Microwave-based moisture sensing, moisture sensing box, moisture sensing system