Ethernet extender

Abstract: An equipment recovery system for high risk environments such as high wall mine shafts has a vehicle that rides on a track including applications where a push-beam conveyor may serve as the track. The vehicle has a guide to keep it on the track and a hitch for attaching a recovery cable. The vehicle is remotely operated from outside the mine, has a power train for moving the vehicle, an implement for performing tasks, and carries an onboard power source and electrical control boxes to power and control the vehicle and implement. The vehicle may communicate with an outside operator station via an Ethernet cable and may employ and Ethernet extender for that purpose. The vehicle may have a camera to transmit video images. The vehicle may be operated from a high wall miner control center or from an operator station on a self propelled support vehicle.

Abstract: The utility model relates to a fundamental frequency type Ethernet extender transmitting via a coaxial cable and being powered by POE, which belongs to the field of electronics, mainly comprises a signal electric power conversion device, a coaxial cable and a conversion device, wherein a POE technology is utilized, so fundamental frequency signal and electric power are integrated and then are transmitted to the signal electric power conversion device, fundamental frequency network signal and electric power are transmitted a second coaxial cable interface on the conversion device via a first coaxial cable interface by passing by the coaxial cable, the fundamental frequency network signal and the electric power are received by a common network device, through the structure, the network transmission distance can reach more than a hundred meters, electronic equipment can remotely transmit network signal and electric power without additionally being connected with a power supply or erected with a power supply, in the meanwhile, the utility model only needs to use the original network signal form, does not need to modulate and demodulate, encode and code, or conversion communication protocol and other processing.

Abstract: A baseband Ethernet extender includes a first transmission device and a second transmission device. The first transmission device and the second transmission devices form therein at least one first baseband Ethernet connection unit and at least one second baseband Ethernet connection unit, respectively. The second baseband Ethernet connection unit is electrically connected through at least one twisted pair cable assembly to the first baseband Ethernet connection unit. Each twisted pair cable constituting the twisted pair cable assembly is electrically connected, at least at one end thereof, to a baseband signal compensation unit. Such an arrangement allows an Ethernet baseband signal to be transmitted to a distance exceeding 100 meters.

Abstract: The Ethernet extension system contains at least a signal and power conversion device, a conversion device, and a coaxial cable connected in between. The signal and power conversion device receives baseband network signal and electricity in accordance with PoE, and delivers the baseband network signal and electricity to the conversion device through the coaxial cable. The conversion device then provides the baseband network signal to an ordinary Ethernet network device. Baseband network signal and electricity as such could be delivered through a coaxial cable beyond the conventional Ethernet without additional configuration of power supplies or power sources, and without repeatedly modulation and demodulation, coding and decoding, or conversion of communication protocols.