公开(公告)号：US20250070767A1

公开(公告)日：2025-02-27

申请号：US18945463

申请日：2024-11-12

Applicant: HUNAN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Guohong FU

IPC: H03K5/01

Abstract: A signal transmission device for reducing a turn-off time of an electromagnetic controlled source includes a first electronic switch, a twisted pair cable and a second electronic switch. The first electronic switch constitutes a bridge arm, and includes a first bridge arm switch, a second bridge arm switch, a third bridge arm switch and a fourth bridge arm switch. The second electronic switch is configured to control turn-on and turn-off of the twisted pair cable. The signal transmission device and ground constitute a signal transmission loop.

公开(公告)号：US20220187488A1

公开(公告)日：2022-06-16

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: G01V3/08 ,  G01V3/12

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：US20240103194A1

公开(公告)日：2024-03-28

申请号：US18520524

申请日：2023-11-27

Applicant: HUNAN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Hui CHENG ,  Chenxing JIA ,  Diquan LI ,  Guohong FU ,  Xiuying LIAO

IPC: G01V3/02 ,  H03K19/177 ,  H03K19/21

CPC classification number: G01V3/02 ,  H03K19/177 ,  H03K19/21

Abstract: A detection device for high-frequency pseudo-random spread spectrum coded sequence signal of shallow geologic body includes a signal transmitter and a synchronous signal receiver. The signal transmitter includes a first Mono-Chip Computer (MCU), a first Field Programmable Gate Array (FPGA), a power amplifier module, a direct-current (DC) power supply, a first display module, a first Global Position System (GPS) synchronization module, a first communication module, and a first memory module. The synchronous signal receiver includes a preamplifier circuit, a bandpass filter circuit, a program-controlled amplifier circuit, an analog to digital (AD) converter circuit, a second FPGA, a second MCU, a second communication module, a second display module, a second GPS synchronization module, and a second memory module. A method using the detection device is further provided.

公开(公告)号：US20220236441A1

公开(公告)日：2022-07-28

申请号：US17687243

申请日：2022-03-04

Applicant: HUNAN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Guohong FU ,  Qiyun JIANG ,  Songyuan FU ,  Hui CHENG

IPC: G01V3/10 ,  H01Q7/00 ,  H05K1/02 ,  H05K1/11

Abstract: A high-density integrated magnetic receiving antenna for electromagnetic exploration, including a multi-layer PCB. A PCB coil of multiple turns are drawn on each conductive layer of the multi-layer PCB, and is continuously wound on each conductive layer of the multi-layer PCB. PCB coils respectively on adjacent conductive layers are connected end to end via a conductive via or a conductive via and a jumper wire such that the PCB coils on each conductive layer of the multi-layer PCB are connected in series to form the high-density integrated magnetic receiving antenna with multiple turns.

公开(公告)号：US20220221612A1

公开(公告)日：2022-07-14

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

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.

公开(公告)号：US20250067896A1

公开(公告)日：2025-02-27

申请号：US18945450

申请日：2024-11-12

Applicant: HUNAN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Guohong FU ,  Lijuan YANG ,  Shijie WANG ,  Hui CHENG ,  Songyuan FU ,  Tianchun YANG

IPC: G01V3/12 ,  H03F3/24 ,  H03F3/45 ,  H04B1/04

Abstract: A transmission device for multi-frequency equal-amplitude non-harmonic electrical prospecting signal includes a single-chip microcontroller, a field programmable gate array (FPGA), a digital to analog conversion (DAC) module, an isolation amplifier circuit, a differential amplifier module, a digital power amplifier circuit, and a sensor module connected successively. A plurality of output ends of the digital power amplifier circuit is in cascade connection with a grounding electrode A and a grounding electrode B to form a loop with ground. An input end of the sensor module is connected with the digital power amplifier circuit. An output end of the sensor module is connected with the single-chip microcontroller.

公开(公告)号：US20250060502A1

公开(公告)日：2025-02-20

申请号：US18937177

申请日：2024-11-05

Applicant: HUNAN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Hui CHENG ,  Guohong FU ,  Yan LIU ,  Xiuying LIAO

IPC: G01V3/08

Abstract: A device and method for measuring spectrum parameters of a formation outcrop and a rock mass are provided. An excitation signal is generated by a direct digital synthesis (DDS) module of a signal transmission portion. A constant voltage mode or a constant current mode is adopted for observation. After the signal passes through a constant voltage/constant current module, a constant high-voltage signal source or a current source signal with constant current output is formed and output to ground through grounding electrodes A and B to establish a stable observation signal field source. Geoelectric response information under the excitation of each frequency signal is acquired by a signal receiving portion through grounding electrodes M and N, processed and send out to a microcontroller unit (MCU) for display and storage. The spectrum parameters at different depths are observed by adjusting geometric dimensions of AB and MN.