3 results about "Loop network" patented technology

The invention discloses an E1 double-loop network with a loop self-healing function. A current main node receives data of a previous main node through a first E1 interface, and a second E1 interface sends processed data to a later main node. The current main node receives data of the later main node through the second E1 interface. The received data is transmitted to the first E1 interface, and the first E1 interface sends the transmitted data to the previous main node. When a link fails, the previous main node loops back the data sent by the second E1 interface into the data received by the second E1 interface, and the later main node loops back the data sent by the first E1 interface into the data received by the first E1 interface. Through connection of the first E1 interface and the second E1 interface, the nodes of the loop network serve as main and spare loops opposite in direction of data flow. The data of the main loop is looped back to the spare loop at the previous node of a faulty link, the data of the spare loop is transmitted reversely to the later node of the faulty link, and therefore, it is ensured that the communication is not interrupted.

The invention discloses a synchronous crossing robot underground a coal mine. A system comprises a front-end synchronous crossing robot, a rear-end control platform and a mine communication system; wherein the front-end synchronous crossing robot is arranged in a mine working face; the rear-end control platform is arranged in a ground working machine room and is operated by a driver; and the mine communication system is composed of a local UWB communication positioning system, an optical fiber system and a mine looped network. Through the whole set of high-bandwidth mine communication system, limb instruction information of the driver can interact with working condition on-site information of the working face in real time, and the driver makes corresponding limb actions according to information acquired by the robot on site; and the underground robot drives robot joint stepping motors in a one-to-one correspondence mode to rotate in real time according to a limb action signal of the driver, accordingly, the synchronous crossing action corresponding to the action of the driver is completed, the 'man-in-the-loop' remote man-robot synchronous crossing control is realized, and finally, the required unmanned operation of the mine working face is completed.