CN203327033U

CN203327033U - EtherCAT-based data acquisition device for flight test

Info

Publication number: CN203327033U
Application number: CN2013201949185U
Authority: CN
Inventors: 滕斌; 肖杰; 彭攀; 杨博; 周训强
Original assignee: XI'AN ZHONGFEI AVIATION TEST TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: XI'AN ZHONGFEI AVIATION TEST TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2013-04-17
Filing date: 2013-04-17
Publication date: 2013-12-04
Anticipated expiration: 2023-04-17

Abstract

The utility model relates to an etherCAT-based data acquisition device for a flight test. A network real-time high-speed data acquisition design configuration is employed for networking test data acquisition in the field of flight test; and functions can be effectively integrated, and maintainability of the device is improved. The data acquisition device comprises a power supply module, and a bus connection unit, a time acquiring and synchronizing module, a PCM coding output module, an analog quantity acquiring module, a digital quantity acquiring module, an Ethernet data transmitting and receiving module, an AFDX/ARINC664-7 bus monitoring module and a bus end connector are successively connected to the power supply module, wherein the bus connection unit is an embedded bus controller or a bus coupler, the embedded bus controller is connected with an input and display module and a detachable high-speed data recoding module, and the bus end connector is equipped with an EtherCAT interface.

Description

Flight test data collecting device based on the ethercat real-time ethernet

One, technical field:

The utility model relates to a kind of flight test data collecting device based on the ethercat real-time ethernet.

Two, background technology:

The characteristics of large aircraft flight test test can be summarized as: 1. measurement parameter is many, and the kind of parameter is numerous and diverse, and for example the A340 measurement parameter of taking a flight test reaches more than 10,000, and the flight test parameter of A380 reaches more than 15,000; 2. the high speed analog parameter is many, bandwidth is high; 3. aircraft is large, but the engineer's random flight of taking a flight test; 4. the space on aircraft is large, can install testing equipment a large amount of, large volume additional; 5. large aircraft is generally civil purpose, and the cycle of taking a flight test is short, cost is low.

Recent decades, what Airborne Testing System generally adopted in the world is American I RIG106 telemetry standards, and using maximum is pulse code multichannel modulation (being PCM) system of time-devision system, always using PCM as transfer of data with the standard approach of record.PCM has also proved that it is in all many-sided advantages such as stability, reliabilities really.PCM is also the standard of current data telemetry and best method, and data are placed to the fixed position of the PCM frame of fixed size, and repeatedly occurs with the frequency of fixing.The engineer that takes a flight test calculates the throughput of data and the service condition of available bandwidth, and then optimal design PCM frame structure, to maximally utilise remote measurement bandwidth for transmission data.

In the large aircraft flight test, along with the requirement of flight test is more and more higher, the parameter of test is more and more, speed is more and more higher, and the PCM form of working out for each test assignment also becomes increasingly complex.In a large-scale system, due to the parameter kind complexity gathered, the speed speed does not wait, code length is inconsistent, it is very difficult building an active data transmission structure, once particularly set up, due to the adjustment of task, Iterim Change PCM format structure, the change parameter is just more difficult.Secondly, what the PCM transmission adopted mostly is the RS422 host-host protocol, restriction because of agreement itself, transmission rate and transmission range have also limited the raising of the data rate of transmission, namely limited the raising of the function of system own, the maximum bitrate of current state-of-the-art PCM data acquisition system is about 20Mbps.In addition, the PCM structure is order-response type bus, and data communication is point-to-point communication, can not realize data sharing and exchanges data.

And Ethernet has the agreement of high bandwidth, standard, cheap operation, the characteristics such as more flexible, allow to carry out exchanges data between each register, display port and other test macros.Secondly, the network equipment, computer product commercialization degree are very high, and technology maturation is cheap.In commercial field, the technology that a large amount of transfer of data makes this field is constantly progressive, the transmission data from start several million, tens, hundreds of million, several gigabits up till now, technology is day by day ripe, cost is also in rapid decline.In addition, the networking of airborne electronic equipment system (as AFDX, technology such as Ethernets) application has aboard also proposed new demand to the Airborne Testing System networking.

Three, utility model content:

The utility model, in order to solve the weak point in the above-mentioned background technology, provides a kind of flight test data collecting device based on the ethercat real-time ethernet, and it is convenient to effectively integrating of function, has improved safeguarding of equipment.

For achieving the above object, the technical solution adopted in the utility model is: a kind of flight test data collecting device based on the ethercat real-time ethernet, it is characterized in that: comprise power module, be connected with bus connection device and time collection and synchronization module on described power module in turn, the pcm encoder output module, analogue collection module, the digital data acquisition module, the Ethernet data transceiver module, AFDX/ARINC664-7 bus monitoring module and bus termination, be connected with input and display module and detachable high-speed data recording module on described embedded type bus controller.

Be provided with the EtherCAT interface on described bus termination.

Described bus connection device is embedded type bus controller or bus coupler.

Compared with prior art, the advantage and the effect that the utlity model has are as follows:

1) the flight test data collecting device based on the ethercat real-time ethernet, the real time high-speed Data Acquisition Design framework of Adoption Network, realize the networking of test flight field test data collection;

2) be convenient to effectively integrating of function, improved safeguarding of equipment;

3) integrate the demand from the data of different test macros or different field: standard broadband analog signal, ARINC429, AFDX, switching value etc.

Four, accompanying drawing explanation:

Fig. 1 equipment principle block diagram of the present utility model;

When Fig. 2 moves for employing PC engine control system, the system operating mode theory diagram;

Reference numeral: 1-power module, 2-bus connection device, 3-time gathers and synchronization module, 4-pcm encoder output module, 5-analogue collection module, 6-digital data acquisition module, 7-Ethernet data transceiver module, 8-AFDX/ARINC664-7 bus monitoring module, 9-bus termination, 10-input and display module, 11-detachable high-speed data recording module.

Five, embodiment:

Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.

Referring to Fig. 1: a kind of flight test data collecting device based on the ethercat real-time ethernet, it is characterized in that: comprise power module 1, being connected with the described bus connection device 2 of bus connection device 2(on described power module 1 in turn is embedded type bus controller or bus coupler) and time collection and synchronization module 3, pcm encoder output module 4, analogue collection module 5, digital data acquisition module 6, Ethernet data transceiver module 7, AFDX/ARINC664-7 bus monitoring module 8 and bus termination 9, be connected with input and display module 10 and detachable high-speed data recording module 11 on described embedded type bus controller 2, be provided with the EtherCAT interface on described bus termination 9.(module in the utility model is existing module)

Each functions of modules of the present utility model is:

The embedded type bus controller, for using the operative scenario of embedded type bus controller control system operation, the functions such as the initialization of completion system, operation control, storage format processing;

Time gathers and synchronization module, and as the real-time clock of accurate synchronous other each slave station acquisition modules of system time reference, its clock signal derives from external clock or the local clock signals such as GPS, IRIG-B, IEEE1588 grandmaster;

Detachable high-speed data recording module, for realizing the real time record function of image data;

The Ethernet data transceiver module, be the FDX Ethernet transceiver module, can extract the data in the EtherCAT network, and be sent to as requested destination node, after also the Ethernet data bag can being carried out to time mark, inserts in the EtherCAT network;

AFDX/ARINC-664-7 bus monitoring module, can receive the AFDX data, after processing according to user instruction, inserts in the EtherCAT network, also can provide the digital simulation function of AFDX, for module or System self-test;

EtherCAT bus coupler (referring to the bus coupler in Fig. 2), for the connection of inner each cabinet of acquisition system is provided, can carry out by it design of system various topological structures;

EtherCAT bus termination (bus termination that refers to the tail end in Fig. 1 and Fig. 2), for the connection between the acquisition system internal chassis is provided, can complete the expansion of linear connection;

Analogue collection module, for completing the collection of analog quantity, and by its analog acquisition result the form with the EtherCAT frame, be sent in the EtherCAT network;

The digital data acquisition module, for completing the collection of digital quantity, and by its digital data acquisition result the form with the EtherCAT frame, be sent in the EtherCAT network;

Power module provides stabilized power supply for the system operation;

The pcm encoder output module, exported the data in the EtherCAT network as requested in the mode of pcm encoder;

Above-mentioned modules is coordinated, and the composition data acquisition system, complete digital quantity, analog quantity, and the acquisition tasks such as network data acquisition, and can transfer to high speed memory modules and carry out record.

System can be controlled the operation of data acquisition system by the embedded type bus controller, also support the operation by PC host computer control data acquisition system.Downlink data EtherCAT port or the bus coupler that can control by embedded type bus carry out the expansion of system topology.

While adopting the embedded type bus controller, system operating mode as shown in Figure 1.While adopting the operation of PC engine control system, system operating mode as shown in Figure 2.

Claims

1. the flight test data collecting device based on the ethercat real-time ethernet, it is characterized in that: comprise power module (1), be connected with bus connection device (2) and time collection and synchronization module (3) on described power module (1) in turn, pcm encoder output module (4), analogue collection module (5), digital data acquisition module (6), Ethernet data transceiver module (7), AFDX/ARINC664-7 bus monitoring module (8) and bus termination (9), be connected with input and display module (10) and detachable high-speed data recording module (11) on described embedded type bus controller (2).

2. the flight test data collecting device based on the ethercat real-time ethernet according to claim 1, it is characterized in that: described bus termination is provided with the EtherCAT interface on (9).

3. the flight test data collecting device based on the ethercat real-time ethernet according to claim 1 and 2, it is characterized in that: described bus connection device (2) is embedded type bus controller or bus coupler.