PMID- 37766052
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20231003
IS  - 1424-8220 (Electronic)
IS  - 1424-8220 (Linking)
VI  - 23
IP  - 18
DP  - 2023 Sep 20
TI  - Design of A High-Precision Component-Type Vertical Pendulum Tiltmeter Based on 
      FPGA.
LID - 10.3390/s23187998 [doi]
LID - 7998
AB  - This paper presents a high-precision component-type vertical pendulum tiltmeter 
      based on an FPGA (Field Programmable Gate Array) that improves the utility and 
      reliability of geophysical field tilt observation instruments. The system is 
      designed for rapid deployment and offers flexible and efficient adaptability. It 
      comprises a pendulum body, a triangular platform, a locking motor and sealing 
      cover, a ratiometric measurement bridge, a high-speed ADC, and an FPGA embedded 
      system. The pendulum body is a plumb-bob-type single-suspension wire vertical 
      pendulum capable of measuring ground tilt in two orthogonal directions 
      simultaneously. It is installed on a triangular platform, sealed as a whole, and 
      equipped with a locking motor to withstand a free-fall impact of 2 m. The system 
      utilizes a differential capacitance ratio bridge in the measurement circuit, 
      replacing analog circuits with high-speed AD sampling and FPGA digital signal 
      processing technology. This approach reduces hardware expenses and interferences 
      from active devices. The system also features online compilation functionality 
      for flexible measurement parameter settings, high reliability, ease of use, and 
      rapid deployment without the need for professional technical personnel. The 
      proposed tiltmeter holds significant importance for further research in 
      geophysics.
FAU - Xu, Xin
AU  - Xu X
AD  - National Institute of Natural Hazards, Beijing 100085, China.
AD  - School of Emergency Management Science and Engineering, University of Chinese 
      Academy of Sciences, Beijing 100049, China.
FAU - Chen, Zheng
AU  - Chen Z
AD  - National Institute of Natural Hazards, Beijing 100085, China.
FAU - Li, Hong
AU  - Li H
AD  - National Institute of Natural Hazards, Beijing 100085, China.
FAU - Ma, Shigui
AU  - Ma S
AD  - National Institute of Natural Hazards, Beijing 100085, China.
FAU - Wu, Liheng
AU  - Wu L
AD  - National Institute of Natural Hazards, Beijing 100085, China.
FAU - Wang, Wenbo
AU  - Wang W
AD  - National Institute of Natural Hazards, Beijing 100085, China.
FAU - Dong, Yunkai
AU  - Dong Y
AD  - National Institute of Natural Hazards, Beijing 100085, China.
FAU - Zhan, Weiwei
AU  - Zhan W
AD  - National Institute of Natural Hazards, Beijing 100085, China.
LA  - eng
GR  - No.41874211/National Natural Science Foundation of China/
GR  - ZDJ2017-26/Institute of Crustal Dynamics, CEA ,Basic scientific Special Fund/
PT  - Journal Article
DEP - 20230920
PL  - Switzerland
TA  - Sensors (Basel)
JT  - Sensors (Basel, Switzerland)
JID - 101204366
SB  - IM
PMC - PMC10535839
OTO - NOTNLM
OT  - FPGA
OT  - digital signal processing
OT  - tiltmeter
COIS- The authors declare no conflict of interest.
EDAT- 2023/09/28 06:43
MHDA- 2023/09/28 06:44
PMCR- 2023/09/20
CRDT- 2023/09/28 01:43
PHST- 2023/08/12 00:00 [received]
PHST- 2023/09/08 00:00 [revised]
PHST- 2023/09/18 00:00 [accepted]
PHST- 2023/09/28 06:44 [medline]
PHST- 2023/09/28 06:43 [pubmed]
PHST- 2023/09/28 01:43 [entrez]
PHST- 2023/09/20 00:00 [pmc-release]
AID - s23187998 [pii]
AID - sensors-23-07998 [pii]
AID - 10.3390/s23187998 [doi]
PST - epublish
SO  - Sensors (Basel). 2023 Sep 20;23(18):7998. doi: 10.3390/s23187998.