Navigation system fuel oil voice alarm identification simulation system

Abstract

The utility model belongs to the technical field of aviation, is used for simulating, reproducing and recognizing infield faults, and provides a fuel oil voice alarm recognition simulation system of a navigation system, which is used for simulating and recognizing fuel oil voice alarm faults through a test device. The identification method is implemented by the IPC, a 429 bus, fuel alarm signal identification, relation calculation of the remaining fuel quantity and the distance to be flying, an oscilloscope and a vibration table. Through the 429 bus data transmission technology, fault recognition is conducted on a storage unit in a computer, the distance between fuel oil and the remaining distance is calculated, 429 bus data on an IPC is used for simulating a fuel oil sensor to send remaining fuel oil amount GT information to the computer, and an oscilloscope is used for replacing a voice alarm device to receive fuel oil alarm signals. The bus data at any moment can be dynamically analyzed, monitored and inquired in real time, an efficient and convenient solution is provided for troubleshooting, and the working energy efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a navigation system fuel voice alarm identification simulation system. BACKGROUND

[0002] In the product maintenance process, the product air fuel voice alarm cannot be tested and reproduced by the ground detection equipment. Fault reproduction is the root of maintenance, and it is an important condition for solving, restoring and even improving the combat effectiveness of the army. The computer in the navigation system is too much interconnected with external system signals, causing maintenance difficulties. In recent years, we have been committed to seeking convenient maintenance technology, combining existing tools and new test methods, hoping to accurately grasp the equipment status and carry out fault prediction, implement lean maintenance, obtain the best maintenance benefit with the lowest resource consumption, and maximize the equipment effectiveness.

[0003] The utility model analyzes the interconnection signal flow of the computer in the system, analyzes the transmission path of the fault alarm signal and the reason for generating the alarm, and simulates the real-time state of the fault occurrence on the ground to identify whether the alarm exists. It has certain guiding significance for positioning other air occasional faults. UTILITY MODEL CONTENT

[0004] The utility model discloses the purpose: propose a navigation system fuel voice alarm identification simulation system, through 429 bus data transmission technology, to the computer internal storage unit fault identification, to the fuel and the remaining distance carry out the calculation. Use the 429 bus data on the IPC to simulate that the fuel sensor sends the remaining fuel amount GT information to the computer, and the oscilloscope replaces the voice alarm device to receive the fuel alarm signal, can real-time dynamic analysis, monitoring, inquiry any time bus data, provide a kind of efficient, convenient solution for troubleshooting, improve work efficiency.

[0005] The utility model discloses the technical scheme: in order to realize the above-mentioned utility model purpose, the utility model uses the following technical scheme to realize.

[0006] Technical scheme:

[0007] A navigation system fuel voice alarm identification simulation system, comprising: a computer, an IPC industrial computer, an ARINC 429 bus, an oscilloscope, a navigation system;

[0008] The computer is bidirectionally connected with the navigation system through the ARINC 429 bus, and the IPC industrial computer is connected with the computer through the ARINC 429 bus;

[0009] The oscilloscope is connected with the computer for collecting and displaying the navigation good signal, the fuel alarm signal and the remaining fuel amount signal output by the computer.

[0010] Four-channel oscilloscope respectively detects computer socket 3Ш4:12 fuel warning output signal

[0011] Test computer socket 3Ш3B:30 and 3Ш3B:31 remaining fuel 429 bus a and b line signals, 429 bus transmission level is ±5±0.5V, oscilloscope screen from left to right shows 32-bit remaining fuel information sent by IPC industrial computer 429 bus.

[0012] Four-channel oscilloscope respectively tests computer socket 3Ш4:12 fuel warning PK11 output signal, which is 27V high level active for warning, low level for normal; test computer socket 3Ш4:8 navigation good PK7 output signal, low level active for navigation good, high level 27V for navigation not good; test computer socket 3Ш3B:30 and 3Ш3B:31 remaining fuel 429 bus a and b line signals, 429 bus transmission level is ±5±0.5V, oscilloscope screen from left to right shows 32-bit remaining fuel information sent by IPC industrial computer 429 bus.

[0013] Further, the IPC industrial computer outputs the CPT remaining fuel quantity signal. The IPC industrial computer continuously sends the GT digital information of the remaining fuel quantity in the 429 data format, wherein the transmission rate is 48KHZ and the check mode is odd check.

[0014] Further, the computer receives the CPT remaining fuel quantity signal, calculates the remaining fuel flight distance according to the CPT remaining fuel quantity signal, and sends the calculated remaining fuel flight distance to the navigation system.

[0015] The computer completes parameter input and output. Receive the remaining fuel quantity GT of the 429 bus, store the high bit in the 1117 unit, and generate the related one-time instruction stored in the 225 unit (0001001000100000), wherein the 10th digit is "1" indicating that there is a fuel warning signal (PK11 is high level), and "0" indicating that there is no fuel warning signal (PK11 is low level), and the 6th digit is "1" indicating that the computer is normal (PK7 is high level), and "0" indicating that the computer is faulty (PK7 is low level). The computer stores the remaining fuel distance DT calculated by the fuel in the 150 unit, and stores the scale value in the 272 unit. The distance to be flown from the current position MC0 to the navigation point is stored in the 151 unit, and the scale value is stored in the 234 unit.

[0016] Further, the navigation system receives the remaining fuel flight distance, and outputs the fuel warning signal according to the relationship between the remaining fuel flight distance and the distance to be flown. When the remaining fuel flight distance is less than the distance to be flown, the fuel warning signal is output.

[0017] Further, the computer receives the fuel warning signal and the navigation good signal from the navigation system and stores them in the storage area of the computer; and the oscilloscope displays the fuel warning signal and the navigation good signal stored in the storage area.

[0018] Further, when the navigation good signal is normal, the IPC industrial computer is controlled to output the CPT residual fuel amount signal, and when the navigation good signal is abnormal, the IPC industrial computer is controlled not to output the CPT residual fuel amount signal.

[0019] Further, the system further comprises a vibration table, and the computer is arranged on the vibration table, and the vibration table is used to restore the real environment of the vibration power spectral density in the air flight state.

[0020] The beneficial effects of the utility model are as follows:

[0021] (1) The utility model technical scheme realizes real-time monitoring of the ground simulation of the fault caused by the product through fault principle analysis, and can be used for completing the fault prediction and health state management of the product.

[0022] (2) The utility model technical scheme can dynamically display the data change on the bus through real-time data forwarding of the 429 bus, helps the design personnel to quickly locate the fault, shortens the troubleshooting cycle, and improves the work efficiency.

[0023] (3) The utility model technical scheme provides a reference method for the air sporadic fault positioning of the 429 bus control of other products, and is beneficial to popularization in other subjects. DRAWINGS

[0024] Figure 1 A scene schematic view using the identification method and device is provided for the utility model embodiment;

[0025] Figure 2 A fuel warning subprogram diagram is provided for the utility model embodiment;

[0026] Figure 3 A fuel voice warning distance diagram is provided for the utility model embodiment; Figure 3 DETAILED DESCRIPTION

[0027] The utility model will be further described in detail in combination with the drawings and specific examples.

[0028] A navigation system fuel voice warning identification simulation system, through the test device Figure 1 Fuel voice warning is simulated and identified. The device comprises an industrial computer, a 429 bus card, an oscilloscope, a vibration table and a navigation product.

[0029] Fuel warning subprogram Figure 2The input parameters include the longitude and latitude of the airport AER, the current height H, and the fuel quantity GT, etc. The special digital computer calculates the remaining fuel flight distance DT. When the distance from the current position to the airport is greater than the remaining fuel flight distance, the special digital computer outputs the fuel warning information.

[0030] The 429 bus T0 sending end a, b of the IPC is connected to the remaining fuel quantity receiving end of the 3Ш3B:30 and 3Ш3B:31 of the computer socket. The special digital computer continuously sends the remaining fuel quantity GT digital information in the 429 data format. The transmission rate is 48 KHZ, and the check mode is odd check.

[0031] Table 1: Correspondence table of IPC 429 interface setting data and transmission information

[0032]

[0033] The four-channel oscilloscope tests the computer socket 3Ш4:12 fuel warning PK11 output signal. The signal is 27V high level active for warning, and low level is normal. The computer socket 3Ш4:8 navigation good PK7 output signal is tested. The low level is active for navigation good, and the high level 27V is for navigation not good. The 429 bus a line and b line signals of the computer socket 3Ш3B:30 and 3Ш3B:31 remaining fuel are tested. The 429 bus transmission level is ±5±0.5V. The oscilloscope screen displays the 32-bit remaining fuel information sent by the IPC 429 bus from left to right.

[0034] The computer receives the remaining fuel quantity GT of the 429 bus, and the high bit is stored in the 1117 unit. The related one-time instruction is stored in the 225 unit (0001001000100000). The 10th digit is "1" indicating that there is a fuel warning signal (PK11 is high level), and "0" indicating that there is no fuel warning signal (PK11 is low level). The 6th digit is "1" indicating that the computer is normal (PK7 is high level), and "0" indicating that the computer is faulty (PK7 is low level). The computer stores the remaining fuel distance DT calculated by the fuel into the 150 unit, and the scale value is stored in the 272 unit. The distance to be flown from the current position MC0 to the navigation point is stored in the 151 unit, and the scale value is stored in the 234 unit. The computer storage unit values are shown in Tables 2 and 3.

[0035] Table 2: Computer storage unit values

[0036] O3y unit number Name Scale Octal address 150 Range to empty 0P-33554 KM 272 151 Range to current waypoint 0P-33554 KM 234

[0037] Table 3: Computer 150 and 151 unit 0p-14p values (15p good bit)

[0038] 0P 1p 2p 3p 4p 5p 6p 7p 8p 9p 10p 11p 12p 13p 14p 33554 16777 8388.5 4294 2097 1048 524 262 131 65.5 32.8 16.4 8.2 4.1 2.05

[0039] Fuel voice warning distance indication Figure 3 The computer calculates the remaining fuel flight distance as DT, when DT≥DAEP, the DT value is stored to the

[150] unit, 0 is sent to the

[225] 11p bit, when DT

[0040] The vibration table is used for restoring the real environment of the vibration power spectrum density in the air flight state.

[0041] Application example

[0042]

Claims

1. A navigational system fuel voice alert recognition simulation system characterized by: The system comprises: a computer, an IPC industrial computer, an ARINC 429 bus, an oscilloscope, and a navigation system; the computer is bidirectionally connected with the navigation system through the ARINC 429 bus, and the IPC industrial computer is connected with the computer through the ARINC 429 bus; the oscilloscope is connected with the computer for collecting and displaying the navigation good signal, the fuel warning signal and the remaining fuel quantity signal output by the computer.

2. The navigation system fuel voice warning recognition simulation system according to claim 1, wherein, The IPC industrial computer outputs the CPT remaining fuel quantity signal.

3. The navigational system fuel voice alerting recognition simulation system of claim 2, wherein, The computer receives the CPT remaining fuel quantity signal, calculates the remaining fuel flight distance according to the CPT remaining fuel quantity signal, and sends the calculated remaining fuel flight distance to the navigation system.

4. The navigation system fuel voice alerting recognition simulation system of claim 3, wherein, The navigation system receives the remaining fuel flight distance, and outputs the fuel warning signal according to the relationship between the remaining fuel flight distance and the distance to be flown.

5. The navigational system fuel voice alert recognition simulation system of claim 4, wherein, The computer receives the fuel warning signal and the navigation good signal from the navigation system, and stores them in the storage area of the computer; the fuel warning signal and the navigation good signal stored in the storage area are collected by the oscilloscope for display.

6. The navigational system fuel voice alert recognition simulation system of claim 5, wherein, When the navigation good signal is normal, the IPC industrial computer is controlled to output the CPT remaining fuel quantity signal; when the navigation good signal is abnormal, the IPC industrial computer is controlled not to output the CPT remaining fuel quantity signal.

7. The navigational system fuel voice alerting recognition simulation system of claim 1, wherein, The system further comprises a vibration table, and the computer is arranged on the vibration table, and the vibration table is used for restoring the real environment of the vibration power spectral density in the air flight state.

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