Title:
METAL DETECTOR FOR BURIED ABANDONED JAPANESE CHEMICAL WEAPONS
Document Type and Number:
WIPO Patent Application WO/2019/127842
Kind Code:
A1
Abstract:
Disclosed is a metal detector for buried abandoned Japanese chemical weapons, comprising: a frequency selecting unit used to adjust a frequency of a sounding signal; a transmitting circuit electrically connected to the frequency selecting unit and used to transmit the sounding signal; a receiving circuit used to receive a signal reflected by a detection object illuminated by the sounding signal; an analog-to-digital conversion unit electrically connected to the receiving circuit and used to transform the reflected signal from an analog signal to a digital signal; and a control unit electrically connected to the analog-to-digital conversion unit. The frequency selecting unit can switch between different frequencies for outputted signals to detect different iron compounds, thereby improving detection precision.
Inventors:
ZHENG XIAOPING (CN)
YANG YEQING (CN)
GENG HUA (CN)
YANG YEQING (CN)
GENG HUA (CN)
Application Number:
PCT/CN2018/075039
Publication Date:
July 04, 2019
Filing Date:
February 02, 2018
Export Citation:
Assignee:
UNIV TSINGHUA (CN)
International Classes:
G01V3/12
Foreign References:
| CN102298159A | 2011-12-28 | |||
| CN204989502U | 2016-01-20 | |||
| CN205720711U | 2016-11-23 | |||
| US5942899A | 1999-08-24 |
Other References:
TONG, SHIBAI ET AL., ANALOG ELECTRONIC TECHNOLOGY FOUNDATION, 31 January 2001 (2001-01-31), pages 20, 390 - 394 ; 474
Attorney, Agent or Firm:
ACIP LAW OFFICES (CN)
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