公开(公告)号：US20150372716A1

公开(公告)日：2015-12-24

申请号：US14842969

申请日：2015-09-02

Applicant: SERCEL

Inventor： Florent GUICHARD ,  Fabien LE MOINE ,  Sophie LOSTANLEN-NOUY

IPC: H04B1/7156 ,  H04B1/7143

CPC classification number: H04B1/7156 ,  H04B1/7143 ,  H04B2201/71338

Abstract: A method for setting frequency channels in a multi-hop wireless mesh network including a plurality of nodes. Each node hops on frequency channels, with a hop period, according to a frequency channels hopping sequence. All data packets transmitted by the nodes have a duration strictly longer than the hop period. When a given node of the plurality of nodes is in a first transmit mode in order to transmit a data packet, it carries out steps of: selecting a transmit frequency channel as a function of the frequency channels hopping sequence; and transmitting the data packet using, for the entire duration of the data packet, the selected transmit frequency channel.

Abstract translation: 一种用于在包括多个节点的多跳无线网状网络中设置频道的方法。 每个节点在频道上跳跃，具有跳频周期，根据频道跳频序列。 节点发送的所有数据包的持续时间长度大于跳数周期。 当多个节点的给定节点处于第一发射模式以便发送数据分组时，它执行以下步骤：选择作为频道跳频序列的函数的发射频道; 并且在所述数据分组的整个持续时间内，使用所选择的发送频率信道来发送所述数据分组。

公开(公告)号：US20210350953A1

公开(公告)日：2021-11-11

申请号：US16866826

申请日：2020-05-05

Applicant: SERCEL

Inventor： Frédéric NICOLAS ,  Oleg VALISHIN ,  Florent GUICHARD

IPC: H01B9/00 ,  G02B6/44 ,  H01B7/17 ,  E21B17/00 ,  E21B17/02 ,  E21B47/00 ,  E21B49/00

Abstract: A hybrid cable for collecting data inside a well includes an electrical cable extending along a longitudinal axis of the hybrid cable, an optical fiber extending along the longitudinal axis, an armor that extends along the longitudinal axis, and encircles the electrical cable and the optical fiber, and a connecting device extending along the longitudinal axis, to enclose the electrical cable and the optical fiber, and to be enclosed by the armor. The connecting device has an unsmooth external surface.

公开(公告)号：US20240250844A1

公开(公告)日：2024-07-25

申请号：US18101342

申请日：2023-01-25

Applicant: SERCEL

Inventor： Florent GUICHARD ,  Thomas GIRARD ,  Freddy EXCOFFIER

IPC: H04L12/40 ,  H04L25/49

CPC classification number: H04L12/40032 ,  H04L25/4904

Abstract: A communication system includes a node configured to collect ambient data with a sensor, and a docking station configured to couple to the node and to establish a communication path with the node through only one signal along one or two wires. The node includes a first module configured to use a first data communication protocol for receiving commands from the docking station along the communication path, and a second module configured to use a second data communication protocol for sending the ambient data to the docking station along the communication path. The first data communication protocol is different from the second data communication protocol, the first data communication protocol is asynchronous and the second data communication protocol is a modified synchronous protocol.