CN204836207U

CN204836207U - Register is synthesized to 1394B bus interface protection type

Info

Publication number: CN204836207U
Application number: CN201520522340.0U
Authority: CN
Inventors: 王勇; 栾璟明; 温金涛
Original assignee: Shaanxi Qianshan Avionics Co Ltd
Current assignee: Shaanxi Qianshan Avionics Co Ltd
Priority date: 2015-07-17
Filing date: 2015-07-17
Publication date: 2015-12-02
Anticipated expiration: 2025-07-17

Abstract

The utility model discloses a register is synthesized to 1394B bus interface protection type, by power module (1), data management unit (2), two 1394B bus module (3) are constituteed, wherein data management unit (2) are including microprocessor (201), FPGA circuit (202), power monitoring circuit (203), DCDC alternaties (204), audio acquisition interface circuit (205), operating condition indicating units (206), program memory (207), SDRAM circuit (208), data memory (209), two way ethernet transceiver (210) and two way isolation transformer (211). The utility model discloses a protection register has networking configuration restructural, and the parameter is resolved in real time, data acquisition and the integrated outstanding advantage of record.

Description

A kind of 1394B bus interface protection type composite record device

Technical field

The utility model belongs to avionics field, is specifically related to a kind of 1394B bus interface protection type composite record device.

Background technology

Protection register is commonly called as " black box ", is the special equipment of flight parameter record, for the accident investigation after aircraft has an accident provides reliable criterion.Protection register should have anti-anti-to ruin, the function such as anti-baked wheaten cake and beacon location.

Existing protection register, shortcoming only has the function of record, by aircraft sensors signals such as exclusive data collecting computer collection simulation, switches, sends to register, cannot carry out real-time resolving to each system parameters of aircraft by special serial-bus.Under new aeronautical technology promotes, aircraft starts extensively to adopt number bus, and it is the inexorable trend of technical development that data acquisition and writing function are integrated in same air equipment by protection register.

Along with the maturation of communications field bus communication technology, the point-to-point communication mode of aviation field by a high speed, complicated, the bus network can joined flexibly replaces.Military 1394B bus is the bussing technique that avionic device of new generation adopts, and brings the upgrading of avionic device thus.

Utility model content

The purpose of this utility model proposes a kind of 1394B bus configuration restructural, the protection type composite record device of parameter real-time resolving.

Consider the problems referred to above of prior art, an aspect disclosed in the utility model, the utility model by the following technical solutions:

A kind of 1394B bus interface protection type composite record device, is made up of power module (1), Data Management Unit (2), two 1394B bus modules (3);

Data Management Unit (2) comprises microprocessor (201), FPGA circuit (202), power supply supervisory circuit (203), DC/DC converter (204), audio collection interface circuit (205), operating state indicating member (206), program storage (207), SDRAM circuit (208), data storage (209), two-way ethernet transceiver (210) and two-way isolating transformer (211);

Described microprocessor (201) is connected with two-way ethernet transceiver (210) respectively, be connected with industry ethernet after two-way ethernet transceiver (210) is connected with two-way isolating transformer (211), by industry ethernet, Data Management Unit (2) is connected with ground checkout equipment and data management computer; Microprocessor (201) is also connected with program storage (207), SDRAM circuit (208), data storage (209) respectively; The data gathered send to microprocessor (201) by 1394B bus module (3);

FPGA circuit (202) is connected with audio collection interface circuit (205), completes the collection of a road voice data; FPGA circuit (202) is also connected with microprocessor (201), and the voice data gathered is carried out record by being sent to data storage (209) after microprocessor (201) process;

Power supply supervisory circuit (203) is connected with power module (1), and the work state information of output data management unit (2) is to operating state indicating member (206);

The power supply of the Power convert that power module (1) inputs by DC/DC converter (204) needed for microprocessor (201) and FPGA circuit (202).

The protection type composite record device of a kind of 1394B bus interface of the present utility model, has networking configuration restructural, parameter real-time resolving, the outstanding advantages of data acquisition and record integration.

Accompanying drawing explanation

Fig. 1 is protection type composite record device structure chart;

Fig. 2 is Data Management Unit structure chart;

Fig. 3 is 1394B bus module structure chart.

Embodiment

Below in conjunction with embodiment, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.

As shown in Figure 1, a kind of 1394B bus interface protection type composite record device, is made up of power module (1), Data Management Unit (2), two 1394B bus modules (3).

As shown in Figure 3,1394B bus module (3) comprises controller bus interface module (300), 1394B bus protocol module (301), link layer functionality module (302), physical layer function (303), external physical interface module (304), power module (305) and clock circuit (306).

Controller bus interface module (300) realizes by connector the interface that remote node main frame reads and writes operational network interface daughter board, comprises 21 bit address signals, 32 bit data signals, read signal, write signal, chip selection signal, reset signal, interrupt signal, ready signal etc.Also supply a pattern in addition and select signal to control each port communication pattern.

1394B bus protocol module (301) realizes AS5643 agreement.Its function completed comprises: the sending and receiving of STOF bag, asynchronous flow bag and parsing, supports message integrity management and system integrity management etc.

Link layer functionality module (302) realizes the protocol processes of 1394B link layer, its function completed comprises: provide link layer and physical layer interface, produce reply data bag, directly for application provides isochronal data to transmit service, produce and be used for synchronously and the periodic signal of timing, complete CRC data check.

Physical layer function (303) realizes the protocol processes of 1394B physical layer, comprises bus message transfer arbitrator, to the encoding and decoding of 1394B packet, and internodal data Packet forwarding and loop detection/disconnection.

External physical interface module (304) comprises transformer and pigtail connects port.Transformer realizes the level conversion of network interface port and the effect of interference and insulation.Pigtail connects port and accesses bus network by connector.

Power module (305) achieves the function being produced 1.8V and 1.5V by 3.3V.

Clock circuit (306) provides the clock of the 49.152MHZ of homology to input for 1394B bus protocol module (301) and physical layer function (303).

Claims

1. a 1394B bus interface protection type composite record device, is made up of power module (1), Data Management Unit (2), two 1394B bus modules (3);