CN205388780U - Machine carries data record appearance - Google Patents

Abstract

The utility model discloses a machine carries data record appearance, including CPU, CPU bus drive circuit, ethernet interface, RS232, RS485 and ARINC429, mil std 1553B data input interface, data storage module, ethernet interface, RS232, RS485 and ARINC429, mil std 1553B and CPU are connected, data storage module passes through CPU bus drive circuit with CPU connects. The utility model discloses a RS232, RS485 and ARINC429, mil std 1553B data input interface has solved the problem of existing data recording apparatus to general aviation data interface's extension, adopt two -stage storage structure, memory capacity is big, and the storage speed is fast to the equipment of having solved closes the problem of the data record disappearance that the electricity caused suddenly.

Description

A kind of Airborne Data Recorder

Technical field

The utility model relates to a kind of data logger, particularly a kind of Airborne Data Recorder.

Background technology

Due to the application particularity of avionic device, before formal installation, new equipment repeatedly can be taken a flight test, right Functional and the reliability of equipment carries out strict checking, and the related data of the state of the equipment of taking a flight test is carried out record.To taking a flight test The output data of equipment carry out real time record, and to be analyzed later playing back be an important means of checking equipment, and it can The foundation of science is provided with functional test, performance test and the reliability testing to the equipment of taking a flight test, and the defect of equipment is divided Analysis provides complete data basis.

Between the particularity of avionic device, for airborne aviation data logger except need conventional RS232, The data-interface such as RS485, Ethernet, in addition it is also necessary to provide the data bus interface of multiple air standard, such as: ARINC429, Mil-Std-1553B etc., there is presently no this kind equipment.Shutting down after being additionally, since end of taking a flight test, Airborne Data Recorder is in wink Between power down, the data being likely to result in the last moment record incomplete situation.

Utility model content

Goal of the invention of the present utility model is: the problem existed for prior art, it is provided that one has data input The airborne number of the data bus interface of the multiple air standard such as interface RS232, RS485 and ARINC429, Mil-Std-1553B According to recorder.

To achieve these goals, the technical solution adopted in the utility model is:

A kind of Airborne Data Recorder, including CPU, cpu bus drive circuit, Ethernet interface, RS232, RS485 and ARINC429, Mil-Std-1553B Data Input Interface, data memory module, described Ethernet interface, RS232, RS485 with And ARINC429, Mil-Std-1553B are connected with CPU, described data memory module passes through described cpu bus drive circuit and institute State CPU to connect.

As preferred version of the present utility model, described data memory module includes single-level memory and second-level storage, Described single-level memory is the NVRAM that read or write speed is fast, and described second-level storage is jumbo NOR FLASH.Pass through two-stage This structure that memory combines, the problem solving the last moment loss of data that recorder instant power-down causes.

As preferred version of the present utility model, described single-level memory NVRAM is STK17TA8 chip, STK17TA8 core The available real-time clock of sheet, mode of operation is identical with SRAM.

As preferred version of the present utility model, described CPU is MPC8270, and microprocessor MPC8270 is by two parts group Become, it may be assumed that the Power PC core of embedding and Communications Processor Module (CPM).

In sum, owing to have employed technique scheme, the beneficial effects of the utility model are:

1, the utility model has RS232, RS485 and ARINC429, the number of many kinds of air standards of Mil-Std-1553B According to interface, and by the bus of CPU, other interface can be extended easily, thus realize Airborne Data Recorder and have many Plant the data bus interface of air standard.

2, the utility model uses two-stage Nonvolatile memory structure, single-level memory and second-level storage, and one-level stores Device is NVRAM, and second-level storage is NOR FLASH.This structure combined by two-level memory device, solves data record The problem of the last moment loss of data that instrument instant power-down causes.

3, the utility model uses microprocessor MPC8270, microprocessor MPC8270 to be made up of two parts, it may be assumed that embedding Power PC core and Communications Processor Module (CPM), the feature of PowerPC framework is that scalability is good, convenient, flexible；And CPM divides Having carried on a shoulder pole the peripheral task of embedded Power PC core, this dual processor architecture power consumption will be less than traditional system knot The processor of structure.

Accompanying drawing explanation

Fig. 1 is the structural representation of the utility model embodiment；

Fig. 2 is the data record flow chart of the utility model embodiment；

Figure marks: 1-CPU, 2-ARINC429 interface, 3-Mil-Std-1553B interface, 4-Ethernet interface, 5- RS232/RS485 interface, 6-CPU bus driving circuits, 7-first order memory (NVRAM), 8,9,10-second level memory (NOR FLASH).

Detailed description of the invention

Below in conjunction with the accompanying drawings, the utility model is described in detail.

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing and enforcement Example, is further elaborated to the utility model.Should be appreciated that specific embodiment described herein is only in order to explain this Utility model, is not used to limit the utility model.

Embodiment

As it is shown in figure 1, a kind of Airborne Data Recorder, including CPU, cpu bus drive circuit, Ethernet interface, RS232, RS485 and ARINC429, Mil-Std-1553B Data Input Interface, data memory module, described Ethernet connects Mouth, RS232, RS485 and ARINC429, Mil-Std-1553B with CPU are connected, and described data memory module passes through described CPU Bus driving circuits is connected with described CPU.

Described data memory module includes that single-level memory and second-level storage, described single-level memory are NVRAM, described Second-level storage is NOR FLASH.

Concrete, as in figure 2 it is shown, described Airborne Data Recorder Data Input Interface provide RS232, RS485 and The multiple interface with avionic device such as ARINC429, Mil-Std-1553B.Data output interface is Ethernet interface, should Interface provides the reading of record data with udp protocol.

The data of these interfaces of CPU Real-time Collection output, the interrupt handling routine of respective interface processes external equipment input Data, by a unified event interface, give the received processing program on upper strata.Received processing program according to data source and Instant data are write in first order memory NVRAM by data type, and safeguard that the length of write data and data are effectively marked Will.After the length of the instant data of write reaches thresholding, call the driver of second level memory FLASH, with file The form of operation writes data in the memory FLASH chip of the second level, removes first order memory after having write again Data in NVRAM, to ensure that data will not be lost.

When the unexpected power down of Airborne Data Recorder, the content of Airborne Data Recorder comprises two parts, it may be assumed that with file shape Formula is saved in the Large Volume Data in the memory of the second level, and with what self-defining data form was saved in first order memory is Time data.

When data record completes, when needing to be read out analyzing to record data, it is connected to be mounted with data by recorder The PC of playback software FD-VIEW, is set up by udp protocol and connects.PC is carried out according to the communication protocol of definition with recorder Interoperability, reads the data of record, and realizes the maintenance to recorder.

Described CPU is that the integrated communicaton microprocessor MPC8270 of MPC8270, Freescale company is made up of two parts, That is: the Power PC core of embedding and Communications Processor Module (CPM), the feature of PowerPC framework is scalability spirit good, convenient Live；And CPM has shared the peripheral task of embedded Power PC core, this dual processor architecture power consumption will be less than passing The processor of the architecture of system, CPM supports 3 quick serial communication controllers (FCC), 2 Multi Channel Controllers simultaneously (MCC), 4 serial communication controllers (SCC), 2 Serial Management Controllers (SMC), 1 SPIs (SPI) and Individual I2C interface.

Described single-level memory NVRAM is STK17TA8 chip, and it is right that the real-time clock that STK17TA8 chip provides can be used for Receive the time tag of data；STK17TA8 chip uses super capacitor as back-up source, solves battery backup power supply Defect, is the super capacitor of 1F with capacity, and data retention over time was up to 30 days；STK17TA8 chip operation mode and SRAM phase With, solve the memories such as EPROM, FLASH and be not easy to the problems such as random read-write, access speed be slow.

Second level memory NOR FLASH is 29GL01GP, and such memory solves the storage problem of Large Volume Data.

FLASH chip owing to being connected with CPU is a lot, the driving force of bus to be increased, and have employed total on cpu bus Line driving chip 74ALVCH16245, it is ensured that the driving force of the signal between CPU and multi-disc memory chip, it is ensured that be System is reliable.

The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all at this Any amendment, equivalent and the improvement etc. made within the spirit of utility model and principle, should be included in the utility model Protection domain within.

Claims (4)

1. an Airborne Data Recorder, it is characterised in that include CPU, cpu bus drive circuit, Ethernet interface, RS232, RS485 and ARINC429, Mil-Std-1553B Data Input Interface, data memory module, described Ethernet interface, RS232, RS485 and ARINC429, Mil-Std-1553B with CPU are connected, and described data memory module is total by described CPU Line drive circuit is connected with described CPU.

Airborne Data Recorder the most according to claim 1, it is characterised in that described data memory module includes that one-level is deposited Reservoir and second-level storage, described single-level memory is NVRAM, and described second-level storage is NOR FLASH.

Airborne Data Recorder the most according to claim 2, it is characterised in that described single-level memory NVRAM is STK17TA8 chip.

Airborne Data Recorder the most according to claim 1, it is characterised in that described CPU is MPC8270 chip.