KR19980020782A - How to save real-time flight data in aircraft simulator - Google Patents

Abstract

The present invention relates to a method for storing real-time flight data obtained in flight practice in an aircraft simulator used for flight training of an aircraft, and real-time system operated by a real-time operating system, and communicates with the real-time system to analyze and analyze various data An aircraft simulation system having a workstation for processing and storage means connected to the workstation, the real time system comprising: operating a real time timer of a predetermined period by a real time clock of a CPU board; Calculating flight data in real time and consequently storing the flight data in memory; Transmitting a real-time flight completion message from the CPU board to the workstation when the timer expires; And stopping the real time timer and transmitting the real time flight data to the workstation, and when the workstation receives the flight completion message, the workstation receives and stores the real time flight data on the hard disk. Therefore, it is possible to facilitate flight data analysis while ensuring real-time system real-time system.

Description

Method of storing real time navigation data in an airplane simulator

The present invention relates to a method for storing real-time flight data obtained in flight practice in an aircraft simulator used for flight training of an aircraft.

In general, the aircraft simulator is a device that performs a virtual flight for aircraft pilot training and aircraft performance test, such a device is a real time system (operated by a real-time operating system) and input from the real-time system It consists of a workstation which processes various data as well as analyzing and processing various data.

In such an aircraft simulator, it is necessary to store various data obtained during simulation flight and analyze and review the data with previous flight result data, and for this, a means for storing flight data is required. In addition, when the flight data is stored in a storage means such as a disk drive, an access time is required, and thus time is required for storing the data.

However, since a real-time system in which flight data is normally obtained is operated in real time, a CPU board cannot allocate much time for storing flight data. In other words, since the real-time system of the aircraft simulator is operated in real time, flight data cannot be stored during real-time operation on a hard disk with long access time, and the TCP / IP communication protocol is used to transmit such real-time flight data through a network. There may be delays and losses in the transmission of data in real time. In addition, the workstation cannot save the transferred data to the workstation's hard disk in real time.

Accordingly, an object of the present invention is to provide a method for efficiently storing simulated flight data obtained on a system operated in real time in an aircraft simulator on a hard disk of a workstation linked with a real-time system.

In order to achieve the above object, the present invention is provided with a real-time system operated by a real-time operating system, a workstation for communicating with the real-time system to analyze and statistical data, and storage means connected to the workstation An aircraft simulation system, comprising: operating, by a real time system, a real time timer of a predetermined period by a real time clock of a CPU board; Calculating flight data in real time and consequently storing the flight data in memory; Transmitting a real-time flight completion message from the CPU board to the workstation when the timer expires; And stopping the real-time timer and transmitting real-time flight data to a workstation, and when the workstation receives the flight completion message, receiving and storing the real-time flight data on a hard disk. It is done.

As described above, in the present invention, the data obtained during the real-time flight is stored in the memory of the real-time system, and when the flight training is completed, the flight data can be stored on the hard disk without applying load to the real-time system by storing the data on the hard disk of the workstation. .

1 is a system configuration according to the present invention,

2 is a flow chart illustrating a procedure performed in a real-time system for storing real-time flight data in accordance with the present invention;

3 is a flow chart illustrating a procedure performed in a real-time system for storing real-time flight data in accordance with the present invention.

* Explanation of symbols for main parts of the drawings

10: real time system 11: CPU board

20: workstation 22: hard disk drive (HDD)

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a system configuration diagram according to the present invention, Figure 2 is a flow chart illustrating a procedure performed in a real-time system for storing real-time flight data in accordance with the present invention, Figure 3 is a real-time flight data storage in accordance with the present invention A flowchart illustrating a procedure performed in a real time system in order to do so.

Referring to FIG. 1, an aircraft simulator to which the present invention is applied includes a real time system 10, a workstation 20, and a hard disk driver 22 connected to the workstation. In addition, the real-time system 10 is composed of a CPU board 11 and a plurality of input and output boards 12 connected to each other by a VME bus, the workstation 20 and the CPU board 11 of the real-time system 10 is Connected with communication cable, it can communicate according to TCP / IP protocol.

In this configuration, in order to prevent transmission delay and loss of data due to communication during real-time simulation, real-time flight data is directly stored in the memory of the CPU board 11, and then stored in the memory of the CPU board 11 after the simulation ends. The entire data is transferred to the workstation 20 and stored on the workstation's hard disk 22.

That is, the present invention stores the real-time flight data by allocating a memory area for a predetermined time on the CPU board 11 during real-time operation, and stores the entire flight data stored from the CPU board 11 after the real-time operation is completed. By communicating with (20), the real-time flight data is stored in the hard disk 22 of the workstation.

Subsequently, the operation of storing data according to the present invention in the aircraft simulation system configured as described above will be described by dividing into a real-time system and a workstation.

First of all, the overall operation of the CPU board 11 of the real-time system to operate the timer by the real-time clock to store the real-time flight data in the memory at regular intervals, and when the real-time timer of the real-time system CPU board 11 is finished The entire flight data stored in the memory is transmitted to the workstation 20. Workstation 20 stores the entire flight data received on hard disk 22.

1. Real time system

In order to store data, the real-time system initializes communication as shown in FIG. 2, starts a real-time timer of a certain period by a real-time clock of the CPU board 11, and performs real-time processing of flight data in real-time. The flight data is stored in the memory (100, 101, 102). Subsequently, when the timer expires, a real-time flight completion message is transmitted from the real-time CPU board 11 to the workstation 20. If the timer does not expire, the real-time flight data is stored in memory along with the real-time operation processing of the flight data. The process is repeated (102, 103). If the flight complete message is transmitted after the timer expires, the real-time processing timer is stopped and real-time flight data is transmitted to the workstation (104, 105).

2. Workstation

As shown in FIG. 3, the workstation 20 determines whether a real-time flight completion message from the CPU board 11 is received after communication initialization, and if received, receives the real-time flight data to receive a hard disk ( 22) (200, 201, 202).

As described above, the real-time flight data of the system operated in real time in the aircraft simulator according to the present invention at a predetermined time interval (typically during the rest period of the simulation flight training) memory stored data of the real-time system workstation By storing the data on a hard disk connected to the system, flight data analysis can be facilitated while ensuring real-time system real-time.

Claims (1)

In the aircraft simulation system provided with a real-time system operated by a real-time operating system, a workstation in communication with the real-time system to analyze and statistics various data, and storage means connected to the workstation, The real-time system, Operating a real time timer of a predetermined period by a real time clock of the CPU board; Calculating flight data in real time and consequently storing the flight data in memory; Transmitting a real-time flight completion message from the CPU board to the workstation when the timer expires; And stopping the real time timer and transmitting real time flight data to the workstation, The workstation, When the flight completion message is received, real-time flight data storage method of the aircraft simulator to perform the step of receiving and storing the real-time flight data on the hard disk.