38 results about "Power over fiber" patented technology

A method and apparatus for transmitting and receiving power over optical fiber is disclosed. In particular, a power over fiber system in which an optical network transmits electrical power via an optical signal and is also transmits data within the optical network as well. The optical signals include a high frequency data portion that includes the data to be transmitted, and either a constant or low frequency power signal portion. The optical signal is received and converted into an electrical signal by a photodetector/photodiode that is electrically filtered to separate the data signal from the power signal. The data signal is then processed using known techniques. The power signal can be conditioned and/or regulated, if necessary, and provided either directly to a terminal piece of equipment to provide all the required power thereto, or may be combined with locally provided power to contribute at least a portion of the power required by the equipment. The terminal piece of equipment may be a wireless access point.

The invention relates to an on-line monitoring system for data collection of electric arresters based on GPS (Global Positioning System) synchronization. The on-line monitoring system comprises a back-stage management server, wherein the back-stage management server is connected to a station control central unit; terminal devices are connected to the station control central unit; synchronous data of running parameters of the electric arresters which are in a network are collected by the terminal devices; power is supplied to the terminal devices by remote optical fibers of the arrester station control central unit; optical fiber communication is utilized to transmit the data; the station control central unit has a GPS time service function and is used for supplying synchronously collected pulses to the terminal devices distributed in different places, thereby realizing synchronous data collection; and inspection personnel can conveniently perform field check and state display on the running parameters of a plurality of local arresters by virtue of a man-machine interface of the station control central unit. Meanwhile, the collected data can be transmitted to the back-stage management server through the optical fibers or in a backup GPRS (General Packet Radio Service) wireless manner; therefore, the system has the characteristics of reducing the working strength of maintenance personnel and finding out potential hidden dangers of the arresters in time and is high in safety.

A computer storage system protected from electromagnetic pulses is described. The storage system utilizes either a hard drive or a solid state drive to hold the data. The device uses fiber optics to transfer data and is powered by either a Power over Fiber system or by a switched battery system. The device protects against radiation, magnetic pulses, and electronic pulses using an enclosure that incorporates a faraday cage, a radiation shield, and/or a magnetic shield.

A laser fiber power supply working method based on power adaptive feedback adopts a laser fiber power supply system, the laser fiber power supply system comprises a laser, a super capacitor energy storage module, a photovoltaic module and a first microcontroller, and the photovoltaic module is suitable for supplying power to a sensing node. When the laser optical fiber power supply system is in a sensing node power supply mode, the first microcontroller executes loop feedback control on the incident laser power transmitted to the photovoltaic module by the laser based on the output power of the photovoltaic module, the power requirement of the sensing node and the working voltage of the super capacitor energy storage module, and the charging process of the photovoltaic module to the super-capacitor energy storage module and the discharging process of the super-capacitor energy storage module to the sensing node are controlled. The laser fiber power supply working method based on power adaptive feedback can improve the long-term reliability of the laser fiber power supply system.

The invention relates to a network of switched optical fiber for airplane seats. The network connects the screens of the seats to each other and to a server via an optical fiber. The network includes optical switches of the MEMS type including mirrors, said switches being provided perpendicular to each seat. Each switch delivers the light beam in the optical fiber to the screen with which it is connected and re-amplifies it in the optical fiber when it is powered, while the switch directly delivers the light beam to the following seat when it is not powered.

An optical connector of a power over fiber system includes a shutter. The shutter opens in conjunction with a connection operation to enable the connection and closes in conjunction with a disconnection operation to block feed light from exiting. A light receiving surface of the shutter is made of a wavelength conversion material. The light receiving surface receives the feed light when the shutter is closed. The optical connector is disposed at a feed-light output end in the power over fiber system.

A power over fiber system includes a power sourcing equipment, a powered device, an optical fiber cable and an openable/closeable or attachable/detachable lid member. The power sourcing equipment includes a semiconductor laser that oscillates with electric power, thereby outputting feed light. The powered device includes a photoelectric conversion element that converts the feed light output by the power sourcing equipment into electric power. The optical fiber cable transmits the feed light from the power sourcing equipment to the powered device. The feed light is invisible light. The lid member covers an outgoing portion from which the feed light goes out. At least part of a light receiving portion of the lid member, the light receiving portion receiving the feed light, is made of a wavelength conversion material that converts a wavelength of the feed light into a wavelength of visible light.

A powered device includes a photoelectric conversion element, a thermoelectric conversion element and a first power line. The photoelectric conversion element receives and converts feed light into electric power. The thermoelectric conversion element is disposed such that heat can be conducted thereto from the photoelectric conversion element. The first power line transmits, to a load, electric power obtained by conversion by the thermoelectric conversion element.

The invention belongs to the technical field of combination of electric energy metering with network communication, and relates to an electric energy meter for PFTTX (power fiber-to-the-x, x = H for home, P for premises, C for curb and N for node or neighborhood), which comprises a measurement mechanism, a shell, a display unit and a wiring unit, wherein wiring terminals are arranged on the wiring unit, and the measurement mechanism is positioned in the shell. The electric energy meter for PFTTX is characterized in that: a fiber input interface and a fiber output interface are arranged on the left side or right side or lower side of the shell, and an optical signal transceiving device is also arranged in the shell; the fiber input interface is connected with an input end of the optical signal transceiving device, and the fiber output interface is connected with an output end of the optical signal transceiving device; the fiber input interface can be externally connected with a fiber, and the fiber output interface can be externally connected with the fiber; grooves for fixing are arranged on both the fiber input interface and the fiber output interface, and threads are arranged at the outer parts of the fiber input interface and the fiber output interface; and a switch for controlling a power supply of the optical signal transceiving device is also arranged on the wiring unit. The invention also discloses a wiring method of the electric energy meter. The invention has the following beneficial effects that: the structure is simple, the use is convenient, the manufacture, the installation and the maintenance are easy, and the like.

The invention relates to a power-over-fiber (PoF) system, comprising: an optical source configured to generate an optical signal, wherein the optical signal comprises an intensity modulation; an optical fiber configured to receive the optical signal from the optical source and to guide the optical signal; an optical sink, which is configured to receive the optical signal from the optical fiber and to convert the optical signal into an electrical signal; a detection unit, which is configured to detect at least one characteristic of the electrical signal, wherein the characteristic is at least partially caused by the intensity modulation of the optical signal; and a control unit, which is configured to control the optical source based on the detected characteristic.