JPH0796896A - Flight data recorder online monitor and test equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To be able to monitor the sensor data of a flight data recorder that records the data of many sensors attached to each part of the aircraft fuselage during a flight test and at the start inspection just before the flight. To do. [Structure] An operation switch 5 and an LCD display unit 4 are provided, and a signal to be stored in a memory of a flight data recorder is branched and taken in from a recorder data input circuit 3 and compared with reference data stored in advance in a reference data memory 9. ,
The state is displayed on the LCD display unit 4. The battery 10 was built in and housed in a small case so that it can be carried in the cabin. [Effect] Flight safety is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention automatically records various operating conditions of various instruments and alarm indicators mounted on an aircraft or the like, and various data relating to the states of aircraft and engines.
The present invention relates to a flight data recorder monitoring device and a test device for obtaining data for investigating the cause of an unexpected accident such as a crash.

[0002]

2. Description of the Related Art An aircraft is equipped with a flight recorder for recording the voice of a pilot and a flight data recorder called a flight data recorder for recording when an accident occurs. The cause of the accident is elucidated by analyzing the operation information of the measured instruments and the airframe information. The flight data recorder is configured to record and record instrument operation information and aircraft information obtained by various sensors attached to various parts of the aircraft in a storage medium. This storage medium (memory) is housed in a special encloser (container) so that the recorded contents are not lost even under a severe environment such as vibration, shock, and high temperature at the time of an accident. The memory capacity of this recording medium is subject to physical constraints due to the miniaturization and weight reduction of onboard equipment, and naturally the data types from a large number of instruments and sensors and the storage sample interval are also limited. In recent years, studies have been carried out to utilize the information on aircraft departure / arrival / arrival and in-flight body information recorded in a flight data recorder for maintenance of aircraft and onboard equipment, and part of them has reached the stage of practical application. Accumulation of various information obtained by a machine sensor for a long time, systematic processing, accumulation of past accident cases, etc. are extremely useful for maintenance of the machine and engine. In order to actively use the data recorded by the flight data recorder for airframe maintenance, the conventional sensor alone is not sufficient, and a new airframe vibration sensor has been added. These sensor information are not displayed on the instrument panel that the pilot can constantly monitor, and are recorded only on the recording medium of the flight data recorder.

FIG. 5 shows a conventional flight data recorder 50.
3 is a block diagram showing a configuration example of FIG. In the figure, reference numeral 51 denotes a machine body sensor, which is used for measuring instrument operating states, engine states,
It is attached to each important point of the aircraft as a dedicated sensor for detecting data such as control status and navigation status. About 100 sensors are installed per machine. Reference numeral 52 denotes a recorder control unit, which converts detection signals from a large number of machine sensors 51 into a predetermined format and performs control for writing to a magnetic tape of a recording unit 56 which is a recording medium or a semiconductor memory. Is. Reference numeral 56 denotes a recording unit in which a memory 57 such as a magnetic tape or a semiconductor memory is housed in a special encloser 58 (container). This encloser (container) 58 is made of a special metal case so that the internal recording medium can be protected even if the aircraft is exposed to strong impact, pressure, heat, etc. due to explosion, flame, or collision due to an accident. There is. Recorder control unit 52
53 is a sensor interface circuit, which is a circuit for inputting information from various sensors 51. 54
Is a control circuit, which converts the format of the data input from the sensor interface circuit 53 and outputs the information to be recorded and accumulated to the recorder drive circuit 55. A recorder drive circuit 55 is a drive circuit for writing the data input from the control circuit 54 into the memory 57 of the recording unit 56.

The above-mentioned flight recorder 50 mounted on an airplane is removed from the fuselage at the time of purchase of the airplane and at the time of maintenance every time a certain long period of operation is performed, and is inspected by a test device for ground support equipment. . FIG. 6 is a block diagram of a conventional test apparatus 60. In the figure, reference numeral 61 denotes a sensor pseudo signal generator, which generates and outputs a pseudo signal equivalent to the detection information output from the machine body sensor attached to each part of the machine body, and is output via the terminal of the flight data recorder 50 of FIG. Is input to the sensor interface circuit 53.
Reference numeral 62 denotes a recorder data input circuit, which is a circuit for inputting the data output from the control circuit 54 of the flight data recorder 50 in FIG. 5 via a terminal. Reference numeral 63 denotes a storage data generation unit, which is the flight data recorder 50 shown in FIG.
The test data to be stored in the memory 57 is generated and output via the terminal of. Reference numeral 64 denotes a stored data reproducing unit which takes in the stored contents of the memory 57 of the flight data recorder 50 via a terminal and reproduces the contents. 65 is an operation switch section, 66 is an LCD (liquid crystal) display section, 67 is a control section, 68
Is a power supply unit. By the switch operation of the operation switch unit 65, each of the above units operates according to the control signal of the control unit 67, and the test result is displayed on the LCD display unit 66. That is, the sensor pseudo signal confirms the operation of the sensor interface circuit 53 and the control circuit 54 of the flight data recorder, and the stored data confirms the operation of the memory 57. As described above, after all the functions and operations of the flight data recorder 50 have been confirmed by the test device 60, which is a ground support equipment, the flight data recorder 50 is mounted on the airplane.

[0005]

However, many (about 100) sensors attached to each part of the aircraft are connected only to the flight data recorder, and the detection information of the sensor is recorded in the memory of the flight data recorder. It is only done. Therefore, the sensor information cannot be acquired until the flight ends and the stored contents of the memory are read. Some of the sensor information activates an alarm when the engine or the aircraft is in a dangerous state after the engine is started and during flight, but when it goes out of the normal value even if the dangerous state is not reached, it is dangerous. Even with predictive data, there is no way to notify the pilot of caution or danger notices.

That is, since the flight data recorder has only an accident diagnosis function which is used for investigating the cause of accidents and improving maintenance work as described above, it is not possible to confirm the operation during flight with the aircraft mounted. There is a drawback that. In particular, if the output status of the sensor during normal operation can be confirmed, an accident can be prevented in advance by performing a start check before flight and an operation check during flight, but there is no such means at present. Recently, new sensors such as an airframe vibration sensor have been installed in order to obtain information useful for maintenance of the airframe and engine. This data can be further enriched in the database for preventive diagnosis by accumulating and analyzing data from long flights. However, since it is not possible to add a display device to monitor the detection information of the newly installed sensor online, it is necessary to reproduce and check the data from the flight data recorder in order to confirm the sensor signal content. was there. Before the flight, the aircraft always checks the operation of each part by starting inspection, but there was no means to confirm the aircraft sensor output that was not displayed on the instrument panel.

Further, in various flight tests carried out before operating a new aircraft, various measurement sensors are specially attached to carry out the tests in order to confirm the operating states of the engine and the like. By equipping the data recorder, the additional sensors for testing can be greatly reduced and used together, and the stored data of the flight data recorder can be reproduced to obtain the measurement data. However, a problem here is that the output state of the airframe sensor signal cannot be confirmed in real time during the flight test. During the flight test, the sensor output data is monitored, and when data that the operating state of the aircraft deviates significantly from the reference value is generated,
In addition to investigating the cause, it is necessary to accurately judge whether the flight test is continued or interrupted. However, although a flight data recorder has been introduced and testing can be performed without the need for additional sensors for testing, there is no means to monitor sensor signals online, so multiple measurement sensors can be mounted for flight testing as before. Have been forced to work. As mentioned above,
Although these sensor information is extremely useful data for flight tests performed before purchasing and operating an airplane and for start-up inspections performed before flights during operation, it is not utilized. There is.

An object of the present invention is to provide an online monitor device and a test device for a flight data recorder, which can simultaneously confirm sensor information that has not been utilized in the past online at the same time during a flight test and during a start inspection before a flight. There are things.

[0009]

An online monitor device of the present invention is configured by selecting a portion required for online monitoring from the configuration of a conventional test device, mounting a battery, and accommodating it in a portable case. The gist of the test device is that the online monitor device is detachably combined and has the same function as a conventional test device when worn.

The on-line monitoring device of the flight data recorder according to the present invention is for monitoring the detection information from a large number of sensors attached to each part of the airplane stored in the flight data recorder on-line during the flight test and the start-up inspection. In, a recorder data input circuit that takes in a signal to be stored in the recording unit of the flight data recorder in a branched manner from the recorder control unit of the flight data recorder, and reference data in which reference data of detection information by the multiple sensors is stored in advance. The detection information of the memory, the operation switch, the liquid crystal display unit, and the sensor designated by the operation switch is fetched through the recorder data input circuit, collated with the reference data of the reference data memory, and displayed on the liquid crystal display unit. Control circuit to control so that the operating voltage It is characterized in that the rechargeable battery is accommodated in the carrying case provided to obtain.

Further, the online monitor device of the present invention for also using the online monitor device as a part of a testing device for ground equipment, comprises:
Control of the sensor pseudo signal input circuit that takes in the sensor pseudo signal output from the test device, the sensor pseudo signal output circuit that outputs the sensor pseudo signal to the sensor interface circuit of the flight data recorder, and the control of the test device A control signal interface for exchanging signals, wherein the control circuit captures the detection information of the sensor designated by the operation switch via the recorder data input circuit, collates it with the reference data of the reference data memory, and compares the detected information. The sensor pseudo signal is captured from the sensor pseudo signal input circuit and displayed from the sensor pseudo signal output circuit to the sensor interface circuit in accordance with a control signal input / output through the control signal interface while being displayed on the liquid crystal display unit. Output and by the test equipment That is configured to control the results of cracking test item so as to display on the liquid crystal display unit is characterized in.

A flight data recorder test apparatus according to the present invention comprises a sensor pseudo signal generator, to which the above online monitor device is detachably attached, and which generates pseudo signals corresponding to a large number of sensors attached to various parts of an airplane. A storage data generating unit for generating storage data for testing the performance of the memory of the flight data recorder, a storage data reproducing unit for extracting and reproducing the contents of the memory stored by the output of the storage data generating unit, and an operation. Switch part,
According to the designation by the operation switch unit, the output of the sensor pseudo signal generator is output to the online monitor device, the output of the storage data generation unit is output to the memory of the flight data recorder, and And a control circuit for controlling the control signal interface to output a control signal for displaying the output of the stored data reproducing unit on the liquid crystal display unit of the online monitor device. .

[0013]

1 is a circuit block diagram of an online device 1 of the present invention. The online monitor device 1 has a function of a portion surrounded by a broken line of the conventional test device 60 of FIG. 6, and the LCD display unit 4 and the recorder data input circuit 3 are the LCD display unit 66 and the recorder of FIG. It corresponds to the data input circuit 62. The operation switch 5 is configured by dividing a necessary portion in the operation switch section 65 of FIG. Further, the control circuit 8 shares the partial function of the control unit 67 of FIG. 6 and controls the operation of the online monitor device 1.
Sensor pseudo signal output circuit 2, sensor pseudo signal input circuit 6, control signal interface 7, reference data memory 9,
The battery 10 and the charging circuit 11 are newly provided,
The online monitor device 1 is housed in a portable case and can be used in the cabin, and when it is detachably attached to the test device of the present invention on the ground, it operates as one test device. A detailed description of the online monitor device 1 of the present invention will be given after the configuration of the test device of the present invention has been described.

FIG. 2 is a circuit block diagram of the test apparatus 15 of the present invention. The test apparatus 15 is configured to have a function as the test apparatus 15 when the online monitor apparatus 1 described in FIG. 1 is mounted. In the figure,
Reference numeral 16 denotes an operation switch section, which is provided with the operation switches necessary for the test apparatus 15 other than the operation switches of the online monitor apparatus 1 in the conventional operation switch section 65 of FIG. Reference numeral 17 denotes a control circuit, which is the test device 15 of the present invention.
Control the operation of. Reference numerals 61, 63, 64 and 68 are the same as the conventional constituent elements shown in FIG.

FIG. 3 is an external structural view of the online monitor device 1 of the present invention, and (A), (B), and (C) are a plan view, a front view, and a side view, respectively. In the figure, 4 is LC
D display section, 5 is an operation switch section, and 12 is a connector of a connection cable to the flight data recorder. 1
Reference numeral 3 denotes a connector for connecting to the test apparatus 15, which connects various signal lines and DC power supply lines. Compact and lightweight,
14 is a handle when carrying.

FIG. 4 is an external structural view of the test apparatus 15 of the present invention, and (A), (B), and (C) are a plan view, a front view, and a side view, respectively. The online monitor unit 1 is attached. The operation switch unit 16 is provided on the front panel. It is about 40 cm high and portable, but it cannot be brought into a narrow cockpit (pilot's seat) because the AC100V power line is connected to the connector on the back.

The online monitor device 1 of the present invention shown in FIG. 1 will be described in more detail. As described above, the online monitor device 1 may be used by itself for flight test and start-up inspection, or may be mounted on the ground support equipment test device 15 and used on the ground. The output circuit 2 and the input circuit 6 of the sensor pseudo signal are the parts that pass the signal from the sensor pseudo signal generator 61 of the main body during the ground test, and the control signal interface 7 is interlocked with the control circuit 17 of the main body. It is a part for.

The operation switch 5 is an operation switch of the online monitor device, and the contents of the switching operation include operation mode switching (sensor signal monitoring, display of quality judgment result during operation of test equipment, display of quality judgment result of machine body sensor signal, Pass / fail judgment input mode, etc.), selection of sensor type when confirming sensor signal contents, setting of upper limit value and lower limit value of sensor data, etc. The LCD display unit 4 is used to confirm the content of the airframe sensor. The display content is for confirming the data input from the recorder control circuit 54 of the flight data recorder.
There are a numerical display method and a graphical display method.
It is also possible to confirm the input content of the machine body sensor signal and selectively display a signal outside the preset quality determination standard. Further, at the time of comparison between the sensor attached to the machine body and the content of the sensor pseudo signal from the test apparatus 15, it is possible to input and display the pass / fail judgment result of the comparison result and the judgment reference value. The recorder data input circuit 3 is a circuit that branches and inputs a data format signal to be written from the recorder control unit of the flight data recorder to the storage unit, and the input data is output to the control circuit 8 after predetermined signal conversion. . The sensor pseudo signal input circuit 6 is a circuit for inputting the sensor pseudo signal generated by the test apparatus. This signal is output to the control circuit 8.

The control circuit 8 includes a recorder data input circuit 3
By comparing the data input from the pseudo signal input circuit 6 and the data input from the pseudo signal input circuit 6, it is possible to confirm that the recorder control unit of the flight data recorder is operating correctly and display the result. The contents of the airframe sensor signals can be displayed in the online monitor state connected to the flight data recorder mounted on the airframe. This is a control for taking out only a specific sensor signal and temporarily monitoring it by temporarily storing data of all the sensors input from the recorder data input circuit 3. Also,
The quality of the sensor signal is judged by comparing with the judgment reference value for each machine sensor input from the reference data memory 9.
Reference numeral 9 is a memory for storing judgment reference data for judging the quality of the machine body sensor signal. 11 is a battery 1
The charging circuit is 0, and the charging DC voltage is input from the test device 15 during the connection with the test device 15 to charge the battery 10. Reference numeral 10 is a battery for supplying operating power during portable operation.

When the online monitor device 1 is brought into the machine for operation, the operation signals of a large number of machine body sensors 51 actually mounted on the machine body are transmitted via the flight data recorder 50 to the recorder data input circuit of the online monitor device 1. Take in 3. The online monitor device temporarily stores the signal taken in the data input circuit 3, and
The sensor signal status is displayed and output in real time on the display unit for each sensor signal. That is, the storage data output from the recorder control unit of the flight data recorder can be temporarily stored, and the level content of the specific sensor signal can be constantly monitored by an instruction from the operation switch. The reference data memory 9 stores reference data of the signal levels of all the sensors in advance. During flight or while the engine is starting, the data captured by the flight data recorder and converted into the format of the writing data in the memory 57 is captured, and compared with the content of the reference data memory 9 to be displayed on the display unit 4. In this way, the aircraft status can be monitored. As a result, it is possible to confirm the overall system operation including the airframe sensor without removing the flight data recorder from the airframe while the system is in the operating state.

Next, the test apparatus 15 of FIG. 2 will be described in more detail. As described above, the test apparatus 15 exerts its function as an apparatus when the online monitor apparatus 1 described above is mounted. The operation is performed by the operation switch 5 mounted on the online monitor device 1 and the operation switch unit 16 mounted on the main body side. That is, the inspection by the generation of the pseudo signal of the sensor and the inspection of the memory of the flight data recorder by the stored data are operated by the operation switch section 16 on the main body side.

[0022]

By using the online monitor device of the present invention capable of monitoring the airframe sensor signal in the online state, it is possible to confirm the operation of the mounted equipment in the mounted state. Also, since it is possible to constantly monitor the contents of the airframe sensor signal, it is
It is possible to detect abnormalities in the aircraft engine etc. at an early stage. Further, by using the monitor device of the present invention during the flight, it is possible to detect the change of the airframe sensor signal during the flight and easily perform the operations such as comparison with the normal value, performance evaluation and measurement. The online monitor device can be easily realized by diverting the function of the test device, and can be realized without requiring a cost burden. Therefore, the present invention is capable of performing online maintenance of the flight data recorder system, pre-flight inspection, and on-line monitoring of the airframe sensor status during flight conditions, which improves work efficiency and is important for early detection of malfunctions. It can contribute to avoiding accidents.

[Brief description of drawings]

FIG. 1 is a block diagram of an online monitor device of the present invention.

FIG. 2 is a block diagram of the test apparatus of the present invention.

FIG. 3 is an external view of an online monitor device of the present invention.

FIG. 4 is an external view of the test apparatus of the present invention.

FIG. 5 is a block diagram of a flight data recorder.

FIG. 6 is a block diagram of a conventional test apparatus.

[Explanation of symbols]

 1 Online Monitor Device 2 Sensor Pseudo Signal Output Circuit 3 Recorder Data Input Circuit 4 LCD Display 5 Operation Switch 6 Sensor Pseudo Signal Input Circuit 7 Control Signal Interface 8 Control Circuit 9 Reference Data Memory 10 Battery 11 Charging Circuit 12 Connector 13 Connector 14 Handle 15 test apparatus 16 operation switch section 17 control circuit 50 flight data recorder 51 sensor 52 recorder control section 53 sensor interface circuit 54 control circuit 55 recorder drive circuit 56 recording section 57 memory 58 container 60 test apparatus 61 sensor pseudo signal generator 62 recorder data Input circuit 63 Memory data generation unit 64 Memory data reproduction unit 65 Operation switch unit 66 LCD display unit 67 Control unit 68 Power supply unit

Claims (3)

[Claims] 1. A recording unit of the flight data recorder for online monitoring of detection information stored in the flight data recorder from a large number of sensors attached to various parts of the airplane during flight test and start-up inspection. A recorder data input circuit for branching a signal to be stored from a recorder control unit of the flight data recorder, a reference data memory in which reference data of detection information by the plurality of sensors is previously stored, an operation switch, and a liquid crystal display unit A control circuit that controls the display information to be displayed on the liquid crystal display unit by collating with the reference data of the reference data memory by fetching the detection information of the sensor designated by the operation switch through the recorder data input circuit; Each part is equipped with a rechargeable battery that gives an operating voltage and is housed in a carrying case On-line monitor device for the modified flight data recorder. 2. A sensor pseudo signal input for taking in a sensor pseudo signal output from the test device to the online monitor device in order to also use the online monitor device according to claim 1 as a part of a test device for ground equipment. A circuit, a sensor pseudo signal output circuit for outputting the sensor pseudo signal to a sensor interface circuit of the flight data recorder, and a control signal interface for exchanging control signals with the test apparatus. , The detection information of the sensor designated by the operation switch is taken in through the recorder data input circuit, collated with the reference data in the reference data memory and displayed on the liquid crystal display unit, and input through the control signal interface. According to the output control signal,
The sensor pseudo signal is fetched from the sensor pseudo signal input circuit, output from the sensor pseudo signal output circuit to the sensor interface circuit, and the result of the test item performed by the test device is displayed on the liquid crystal display unit. The online monitor device according to claim 1, wherein the online monitor device is configured to be controlled as described above. 3. A sensor pseudo signal generator, which is detachably mounted with the online monitor device according to claim 2, and which generates a pseudo signal corresponding to a large number of sensors attached to each part of an airplane, and a memory of a flight data recorder. A storage data generation unit for generating storage data for testing the performance of the storage device, a storage data reproduction unit for extracting and reproducing the contents of the memory stored by the output of the storage data generation unit, an operation switch unit, The output of the sensor pseudo signal generator is output to the online monitor device, the output of the storage data generation unit is output to the memory of the flight data recorder, and the storage is performed according to the designation by the operation switch unit. The control signal for displaying the output of the data reproducing unit on the liquid crystal display unit of the online monitor device is input to the control signal input unit. The test apparatus of the flight data recorder and a control circuit for controlling to output to the face.