公开(公告)号：US11846744B2

公开(公告)日：2023-12-19

申请号：US17687192

申请日：2022-03-04

Applicant: HUNAN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Guohong Fu ,  Hui Cheng ,  Songyuan Fu ,  Xiangqin Zhong

IPC: G01V3/00 ,  G01V3/08 ,  G01V3/12 ,  G01R29/26

CPC classification number: G01V3/083 ,  G01V3/12 ,  G01R29/26 ,  G01V2003/086

Abstract: An electrical prospecting signal transmission device capable of suppressing electromagnetic coupling interference, including a rectangular wave signal source, an output circuit for supplying power to the ground and a plurality of transmission channels. Each of the plurality of transmission channels includes an isolated driving circuit, a low-pass filter circuit and a power amplification circuit connected sequentially in series. The rectangular wave signal source is configured to generate a rectangular wave or a composite rectangular wave. A signal output terminal of the rectangular wave signal source is connected to an input terminal of the isolated driving circuit, and an output terminal of the power amplification circuit is connected to the output circuit to supply power to the ground.

公开(公告)号：US11762122B2

公开(公告)日：2023-09-19

申请号：US17687126

申请日：2022-03-04

Applicant: HUNAN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Guohong Fu ,  Songyuan Fu ,  Hui Cheng ,  Tianchun Yang

IPC: G01V3/38 ,  G01V3/10 ,  G01V3/165

CPC classification number: G01V3/38 ,  G01V3/10 ,  G01V3/165

Abstract: A device for reducing turn-off time of a transient electromagnetic transmitting signal includes a transmitting coil, a first electronic switch to control connection mode of the transmitting coil and a second electronic switch configured to form a bridge arm. The transmitting coil is a twisted pair including a first wire and a second wire. The first wire is connected to one end of the second electronic switch. The other end of the second electronic switch is connected to one end of the first electronic switch. The other end of the first electronic switch is connected to the second wire. The connection mode of the transmitting coil includes head-to-head connection, head-to-tail connection and tail-to-tail connection between the first wire and the second wire. The first wire and the second wire are connected to form a transmitting loop.