RU196222U1 - Digital Stream Shaper - Google Patents

Abstract

The utility model relates to the field of computing. The technical result consists in expanding the arsenal of technical means. Shaper of the digital information stream with a printed circuit board on which the shaper of the information stream and the buffer memory are located, and the shaper of the information stream is connected to the power module, with an interface for transmitting data to an external medium and a buffer memory connected to the switching means connected with the on-board devices. 2 ill.

Description

The proposed technical solution relates to the field of space technology, and in particular to means for measuring the parameters and characteristics of spacecraft and launch vehicles by means of telemetric systems.

As the closest analogue, a digital data stream former, applicable to land vehicles, was proposed in the patent for utility model RU189705. The shaper of the digital information stream contains a printed circuit board on which the shaper of the information stream and the buffer storage device are located. The shaper of the information flow is connected with an interface for transmitting data to an external medium and a buffer storage device connected to switching facilities connected to the on-board devices via Ethernet.

In turn, the proposed technical solution is aimed at improving the technical means of this class, namely, the creation of a means of collecting and transmitting information from spacecraft to Earth.

A shaper of a digital information stream with printed circuit boards is proposed, on which shapers of an information stream and a buffer storage device are located, and also includes a switchboard. The information flow shaper is connected with power modules, with an interface for transmitting data to an external medium, and a buffer memory connected to switching devices connected to on-board devices via Ethernet. In contrast to the analogue, the shaper of the digital information stream includes the first and second boards for the formation of the output information stream, reserving each other. On each of these boards there is an information stream former and a flash buffer. Each shaper of the information stream is associated with an interface for transmitting data to an external system, a shaper of the information stream on another board for generating the output stream of information, and a buffer storage device on this and other boards for generating the output stream of information. The digital stream shaper also includes a switchboard, each of which is connected to the on-board device via Ethernet and a buffer storage device on the first and second boards for generating the output information stream. The first and second cards for the formation of the output information stream and the switchboard are combined with each other in a single design. It is possible to replace the Ethernet format, which provides the connection of cameras to the digital stream conditioner with the Camera Link protocol.

The technical solution is illustrated by drawings: FIG. 1 is a block diagram (an example of using four video cameras), FIG. 2 - appearance of the design of the shaper of the digital information stream.

The digital stream generator (1) is a device placed on board a launch vehicle or a spacecraft. The first (3) and second (4) cards for the formation of the output information stream and the switchboard (2) are located in the shaper case. The first (3) and second (4) output stream shaping boards reserve each other to ensure reliable information transfer from the booster or spacecraft. On each of the boards (3), (4) of the formation of the output information stream, an information stream former is placed - a microcircuit and a flash memory buffer. The information flow shapers are connected with an RS-485 type interface (if used on a launch vehicle) or LVDS (if applied on a spacecraft), which provides data transfer to an external system - a transmitting device or an on-board telemetry system, respectively. Also, each shaper of the information flow is associated with the shaper of the information flow on another board for generating the output stream of information and a buffer storage device on this and other boards for generating the output stream of information. Dedicated to ensure reliable information collection, the switchboard (2) is designed to accommodate switches, each of which is connected to the on-board device via Ethernet and a buffer storage device on the first and second boards for generating the output information stream.

Digital stream shaper (1) packs information (for example, from cameras in MJPEG, H.264 formats) into frames with the structure recommended by the International Advisory Committee for Space Data Systems (CCSDS), noise-resistant encoding of packed information (convolutional coding and Reed-Solomon coding) and its transmission via RS-485 or LVDS interface to a transmitting device or an on-board telemetry system. The switchboard (2) performs the switching of the information flow over Ethernet. The flow shaping boards (3), (4) provide for storing information in buffer memory devices, imposing noise-proof coding on information in the formers of the information stream and issuing the information stream via the RS-485 or LVDS interface. The information flow shapers form and issue control commands to devices via Ethernet through the switchboard (for example, setting the time, issuing a status word, turning on / off the cameras, video quality factor, clear the memory, setting the resolution of the video image, setting the frame rate, continuous recording mode, etc. )

12 V and 5 V power modules (5), (6) are also provided in the digital stream shaper (1), which can be both power sources for the digital stream shaper itself and for devices connected to it with the corresponding supply voltage.

Claims (1)

Shaper of a digital information stream with a printed circuit board on which the shaper of the information stream and the buffer storage device are located, the shaper of the information stream connected to the power module, with an interface for transmitting data to an external medium and a buffer storage device connected to the switching means connected with the on-board devices, characterized in that it includes the first and second boards of formation of the output stream of information that reserve each other, on each of which is located information flow formatter and flash storage device, each information flow shaper connected to an interface for transferring data to an external system, information flow shaper on another output information flow generation board and a buffer memory on this and other output information flow generation boards, as well as includes a board of switches, each of which is connected to an external on-board device and a buffer storage device on the first and second the boards for generating the output stream of information, the first and second boards for forming the output stream of information, the switchboard, as well as the power modules are combined with each other in a single design.

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