CN108563596B

CN108563596B - Portable airplane 1188A interface signal acquisition and detection device

Info

Publication number: CN108563596B
Application number: CN201810349301.3A
Authority: CN
Inventors: 杨永超; 李运; 所玉君; 崔建飞
Original assignee: Tianjin Jinhang Computing Technology Research Institute
Current assignee: Tianjin Jinhang Computing Technology Research Institute
Priority date: 2018-04-18
Filing date: 2018-04-18
Publication date: 2021-06-08
Anticipated expiration: 2038-04-18
Also published as: CN108563596A

Abstract

The invention discloses a portable airplane 1188A interface signal acquisition and detection device, which is connected with a 1188A main interface, an airplane suspension object main interface and a signal acquisition and detection device through a three-way cable; the device includes: the device comprises a power supply module, a computer communication module, a display module, a bandwidth signal module, a pulse discrete magnitude module and a charging wireless module; the power supply module is connected with the external connector and supplies power to other modules; the computer communication module is connected with the external connector through a 1553B bus, receives a control instruction of a ground system in a wireless communication mode through the charging and wireless module, and finishes signal state acquisition and storage of each interface; the bandwidth signal module is connected with the external connector and is used for acquiring high and low bandwidth signals; the pulse discrete quantity module is connected with the external connector and is used for collecting discrete quantity and pulse quantity; the charging and wireless module is connected with the external connector and is used for charging and discharging control management and wireless communication of the airplane; the external connector is connected with the three-way cable.

Description

Portable airplane 1188A interface signal acquisition and detection device

Technical Field

The invention belongs to the technical field of signal acquisition, and relates to a portable airplane 1188A interface signal acquisition and detection device.

Background

GJBll88A-99 "aircraft/hangar electrical connection system interface requirements" is an important national military standard that defines an aircraft-hangar electrical interface. The standard specifies the type and characteristics of electrical interfaces in the main interfaces of ASI (aircraft hangar interface), MSI (task hangar interface), CSI (carrier hangar interface) and CSSI (carrier hangar interface); the signal types mainly comprise high-bandwidth signals, multi-channel data bus signals, low-bandwidth signals, special discrete signals, airplane power supplies and the like. At present, each hanging point main interface of a domestic military aircraft weapon system is generally designed according to the standard, the working state of an electrical signal of the interface is related to the execution result of an aircraft combat mission, and the acquisition and detection of the interface signal are a key technology.

Disclosure of Invention

Objects of the invention

The purpose of the invention is: by designing the portable airplane 1188A interface signal acquisition and detection device, the working states of various electrical signals of the main interface of the airplane can be effectively acquired and detected, so that the working efficiency of ground support personnel is improved.

(II) technical scheme

In order to solve the technical problem, the invention provides a portable airplane 1188A interface signal acquisition and detection device, which is characterized in that a universal beam is arranged on the airplane wing, a 1188A main interface is arranged on the universal beam, and a three-way cable is respectively connected with the 1188A main interface, an airplane launcher, a task suspension main interface and the signal acquisition and detection device; the signal acquisition and detection device comprises: the device comprises a power supply module, a computer communication module, a display module, a bandwidth signal module, a pulse discrete magnitude module and a charging wireless module; the power supply module is connected with the external connector and used for supplying power to other modules; the computer communication module is connected with the external connector through a 1553B bus, receives a control instruction from a ground system in a wireless communication mode through the charging and wireless module, and finishes signal state acquisition and storage of each interface; the bandwidth signal module is connected with the external connector and is used for acquiring high and low bandwidth signals; the pulse discrete quantity module is connected with the external connector and is used for collecting discrete quantity and pulse quantity; the charging and wireless module is connected with the external connector and is used for charging and discharging control management and wireless communication of the airplane; the external connector is connected with the three-way cable.

(III) advantageous effects

In the portable airplane 1188A interface signal acquisition and detection device provided by the technical scheme, the 1188A interface is used as a standard interface of a current military airplane suspension object, the acquisition and detection device has universality for domestic main warfare airplanes, and the reliability, portability and economy of the device are greatly enhanced by adopting the design idea of embedded software and hardware, so that the portable airplane 1188A interface signal acquisition and detection device has a wide application prospect.

Drawings

Fig. 1 is a schematic diagram of the connection of the external interface of the signal acquisition and detection device of the portable aircraft 1188A interface of the present invention.

Fig. 2 is a schematic block diagram of a power supply module according to an embodiment of the invention.

Fig. 3 is a functional block diagram of a high bandwidth signal sub-module according to an embodiment of the present invention.

Fig. 4 is a schematic block diagram of an audio/video module according to an embodiment of the present invention.

Fig. 5 is a schematic block diagram of a pulse discretization module in accordance with an embodiment of the present invention.

Fig. 6 is a schematic block diagram of a charging and wireless module according to an embodiment of the present invention.

Fig. 7 is an electrical schematic diagram of a signal acquisition and detection device according to an embodiment of the present invention.

FIG. 8 is a flowchart illustrating the operation of the detection software in the apparatus according to the embodiment of the present invention.

Detailed Description

In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.

In order to detect the working states of various signals of the main interface of the weapon system, the portable airplane 1188A interface signal acquisition and detection device of the embodiment is mainly used for acquiring and detecting discrete signals, direct-current power signals, alternating-current power signals, pulse quantity signals and multi-channel data bus signals (GJB289A bus signals) of airplane missiles and task suspension main interfaces.

Referring to fig. 1, a universal beam is arranged on the wing of the aircraft, a 1188A main interface is arranged on the universal beam, and a three-way cable is respectively connected with the 1188A main interface, the aircraft launcher, the task suspension main interface and the signal acquisition and detection device.

Referring to fig. 7, the signal collecting and detecting apparatus includes: the device comprises a power supply module, a computer communication module, a display module, a bandwidth signal module, a pulse discrete magnitude module and a charging wireless module; the power supply module is connected with the external connector and used for supplying power to other modules; the computer communication module is connected with the external connector through a 1553B bus, receives a control instruction from a ground system in a wireless communication mode through the charging and wireless module, and finishes signal state acquisition and storage of each interface; the bandwidth signal module is connected with the external connector and is used for acquiring high and low bandwidth signals; the pulse discrete quantity module is connected with the external connector and is used for collecting discrete quantity and pulse quantity; the charging and wireless module is connected with the external connector and is used for charging and discharging control management and wireless communication of the airplane; the external connector is connected with the three-way cable.

The signal acquisition and detection device is mainly used for acquiring and detecting discrete signals, direct current power signals, alternating current power signals, pulse quantity signals and multi-channel data bus signals (GJB289A bus signals) of main interfaces of aircraft missiles and task suspensions, wherein the discrete quantity, the direct current power signals and the alternating current signals are acquired by a discrete quantity acquisition module, high and low bandwidth signals are acquired by a bandwidth signal module, and the GJB289A bus is acquired by a computer communication module. Specific signals are defined in the following table:

table 1.1188A signal type statistics

The computer communication module is a computer system based on ARM9 as core, and the peripheral uses gate array to convert the CPU expansion bus into standard LBE bus. In order to miniaturize the system, the computer communication module integrates GJB289A-97 standard digital interfaces. The on-board processor controls other expansion modules in the case through the internal bus, and processes 1553B information to realize the function of bus MT.

The computer communication module receives a control instruction from the ground system in a wireless communication mode through the charging and wireless module to complete the acquisition and storage of the signal state of each interface. The computer communication module is integrated with a high-performance processor core (compatible with ARM9), has the highest working frequency of 240MHz, and is provided with a high-speed program, a data memory and a high-performance floating-point operation coprocessor; the FPGA is integrated, 30 ten thousand equivalent logic gates and 4 DCM clock management units are integrated; the integrated AMBA bus controller supports an AHB or APB mode; an integrated on-chip SRAM and a 32-bit external memory interface; has 1-way GJB289A bus interface (dual redundancy).

Referring to fig. 2, the power supply module is composed of input filtering, backflow prevention, clamping, energy storage, output filtering, a +5V and + 15V switching power supply and the like, wherein the +5V maximum output power is 10W, the + 15V maximum output power is 3W, the output ripple (peak-to-peak value) <100mV is designed according to the requirements of the GJB181-86 standard class-B power supply equipment.

The bandwidth signal module comprises a high bandwidth signal sub-module and a low bandwidth processing module.

Referring to fig. 3, the high bandwidth signal submodule includes a satellite receiving chip and a CC synchronization pulse receiving chip.

The satellite receiving chip receives satellite signals from the antenna, analyzes positioning information such as longitude and latitude and outputs the positioning information through the UART port.

The main indicators of satellite signal reception are as follows:

receiving signals: GPS L1 frequency point 1575.42 MHz; BD-2B1 frequency point 1561.098MHz

Output protocol format: support NMEA0183, BUPro and RINEX

1PPS output precision: 100ns

Data update rate: 1HZ

Positioning accuracy: level <5m, elevation <10m

The CC synchronization pulse receiving chip is responsible for identifying the pulse issued by the 1188A interface, and the frequency, the amplitude and the pulse width can be measured.

Referring to fig. 4, the low bandwidth processing module includes two parts, namely, a sound unit and a video unit.

The video unit comprises a synchronous extraction chip and a double-channel video AD chip and is used for collecting double-channel video signals and supporting an inner synchronous mode and an outer synchronous mode, and under the inner synchronous mode, the SOPC integrated FPGA collects video and audio signals based on internally generated synchronous signals. In the external synchronization mode, the FPGA firstly controls the synchronization extraction chip to acquire a synchronization signal from an input synchronization video source, and then video data acquisition is carried out according to the synchronization signal.

The sound unit comprises a driving circuit and an isolation circuit, a matching circuit is designed according to the characteristics of input signals, and finally the FPGA finishes the acquisition of sound signals.

Referring to fig. 5, the pulse discrete module supports interfaces such as pulse input and output and discrete quantity control, and acquires discrete quantity and pulse quantity by using an FPGA + optocoupler implementation method. The specific parameters are as follows:

32 discrete quantity input interfaces which can be configured by software (voltage values can be measured);

3 paths of alternating current test interfaces;

6 input pulse circuit interfaces.

Referring to fig. 6, the charging and wireless module includes a charging and discharging management unit and a wireless communication control unit.

The wireless communication control unit adopts a modulation-demodulation mode of direct sequence spread spectrum, has certain anti-jamming capability, can meet the electromagnetic environment of simultaneous working of multiple networks in the same area, provides a technical means of wireless data communication for simultaneous ground wireless testing of multiple airplanes in a short distance, and the sub-modules adopt a half-duplex communication mode and can form a special wireless local area network among multiple devices; a plurality of wireless local area networks can be established in the same area by a frequency division multiple access mode. The specific parameters are as follows:

acting distance: no less than 30m in consideration of the position of the shielding of the machine body and the antenna;

the working frequency is as follows: 1429 MHz-1525 MHz;

system capacity: 8 airplanes in the same area do not interfere with each other;

emission power: 30 dBm;

modulation mode: DS + QPSK;

a multiple access system: TDMA + FDMA;

a duplex mode: half duplex;

chip rate: 5 Mchip/s;

information rate: 1.8 Mbit/s;

frequency point number: 13, the number of the channels is 13;

spreading code length: 8;

spread spectrum coded modulation: 4/8 MSK;

and (3) an encoding mode: CRC check error correction + convolutional code (2,1, 7);

sensitivity: -100dBm @ 10-7;

dynamic range: not less than 70 dB;

the anti-interference capability: the interference rejection margin is not less than 10 dB;

networking protocol: according to the time slot distribution mode;

an antenna: horizontal omnidirectional, vertical polarization, length less than 30 mm.

The charge and discharge management unit is used for charge and discharge management of the battery, and the battery capacity is 2200 mAh; the charging and discharging management unit is internally provided with a state feedback circuit which can feed back the charging state and the electric quantity to the computer communication module; the battery is provided with a temperature sensor which is connected with the charging and discharging management unit to monitor the temperature of the battery in the charging process in real time, and the charging process is automatically interrupted when the temperature is over-temperature.

Referring to fig. 7, the signal collecting and detecting apparatus further includes: a chassis; the power supply module, the computer communication module, the display module, the bandwidth signal module and the pulse discrete magnitude module are arranged in the case; the external connector of the case comprises a main connector and an extension connector.

Based on above-mentioned signal acquisition and detection device, it still is provided with detection software correspondingly, its operating system: an embedded WINCE5.0 operating system; programming language: c + +; developing a tool: EVC + +.

The detection software comprises the following modules:

a power-on self-test module: the method is mainly used for running the power-on self-test program of each functional module after the equipment is powered on, completing the state check of each functional module and displaying the self-test result in the main interface of the equipment.

A parameter and initialization module: the method is mainly used for setting the working parameters of the equipment and mainly comprises parameter setting such as acquisition period, acquisition content and acquisition expected threshold value. After the parameter setting is completed, the software module writes the parameters into each hardware module register through the bus in the system, and the parameter setting function of each functional module is completed.

The test data reading control module: the module periodically reads the state registers of the functional modules according to the period parameters and the acquisition contents and the state of the timer, and finishes the operation of acquiring data from the hardware registers to the internal memory of the host.

And the state display module is used for displaying the states of the acquired signals.

The data storage software module writes data acquired by each module into a flash chip in a computer module in real time in a DMA mode by creating a file system. And the data analysis and analysis are convenient.

And the fault diagnosis module analyzes according to the data acquired in real time, mainly comprises the steps of comparing the working period and the working state of the acquired signals with an expected threshold value of a set parameter, analyzing the acquired data and diagnosing faults.

Based on the above detection software, the main work flow of the portable airplane 1188A interface signal acquisition and detection device is shown in fig. 8.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A portable airplane 1188A interface signal acquisition and detection device is characterized in that a universal beam is arranged on an airplane wing, a 1188A main interface is arranged on the universal beam, and a three-way cable is respectively connected with the 1188A main interface, an airplane launcher, a task suspension main interface and the signal acquisition and detection device; the signal acquisition and detection device comprises: the device comprises a power supply module, a computer communication module, a display module, a bandwidth signal module, a pulse discrete magnitude module and a charging wireless module; the power supply module is connected with the external connector and used for supplying power to other modules; the computer communication module is connected with the external connector through a 1553B bus, and receives a control instruction from a ground system in a wireless communication mode through the charging wireless module to complete the acquisition and storage of signal states of each interface; the bandwidth signal module is connected with the external connector and is used for acquiring high and low bandwidth signals; the pulse discrete quantity module is connected with the external connector and is used for collecting discrete quantity and pulse quantity; the charging wireless module is connected with the external connector and is used for airplane charging and discharging control management and wireless communication; the external connector is connected with the three-way cable.

2. The portable aircraft 1188A interface signal acquisition and detection device of claim 1, wherein the computer communication module is a computer system based on ARM9 as a core, and the peripheral gate array is implemented to convert the CPU expansion bus into a standard LBE bus and integrate a GJB289A-97 standard digital interface.

3. The portable aircraft 1188A interface signal acquisition and detection device of claim 2, wherein the bandwidth signal module includes a high bandwidth signal sub-module and a low bandwidth processing module.

4. The portable aircraft 1188A interface signal acquisition and detection device of claim 3, wherein the high-bandwidth signal submodule comprises a satellite receiving chip and a CC synchronization pulse receiving chip; the satellite receiving chip receives satellite signals from the antenna, analyzes longitude and latitude positioning information and outputs the longitude and latitude positioning information through a UART port; the CC synchronization pulse receiving chip is responsible for identifying the pulse issued by the 1188A interface, and the frequency, the amplitude and the pulse width can be measured.

5. The portable aircraft 1188A interface signal acquisition and detection device of claim 4, wherein the low-bandwidth processing module includes two parts, a sound unit and a video unit; the video unit comprises a synchronous extraction chip and a double-channel video AD chip and is used for collecting double-channel video signals and supporting an inner synchronous mode and an outer synchronous mode, and under the inner synchronous mode, the SOPC integrated FPGA collects video and audio signals based on internally generated synchronous signals; in an external synchronization mode, the FPGA firstly controls a synchronization extraction chip to acquire a synchronization signal from an input synchronization video source, and then video data acquisition is carried out according to the synchronization signal; the sound unit comprises a driving circuit and an isolation circuit, and the FPGA finishes the acquisition of sound signals.

6. The portable aircraft 1188A-interface signal collection and detection device of claim 5, wherein the charging wireless module comprises a charging and discharging management unit and a wireless communication control unit.

7. The portable aircraft 1188A interface signal acquisition and detection device of claim 6, wherein the wireless communication control unit provides wireless data communication for simultaneous ground wireless testing of multiple aircraft at close range in an electromagnetic environment with simultaneous multiple networks operating in the same area by using direct sequence spread spectrum modem.

8. The portable aircraft 1188A interface signal acquisition and detection device of claim 7, wherein the charge and discharge management unit is configured to manage charge and discharge of a battery, the battery capacity being 2200 mAh; the charging and discharging management unit is internally provided with a state feedback circuit which can feed back the charging state and the electric quantity to the computer communication module; the battery is provided with a temperature sensor which is connected with the charging and discharging management unit to monitor the temperature of the battery in the charging process in real time, and the charging process is automatically interrupted when the temperature is over-temperature.

9. The portable aircraft 1188A interface signal acquisition and detection device of claim 8, wherein the signal acquisition and detection device further comprises: a chassis; the power supply module, the computer communication module, the display module, the bandwidth signal module and the pulse discrete magnitude module are arranged in the case; the case panel is arranged outside the case, and a power switch, a display screen, an operation key and an indicator light are arranged on the case panel.

10. The portable aircraft 1188A interface signal collection and detection device of claim 9, wherein the external-to-external connectors are disposed on the chassis and include a main connector and an expansion connector.