CN111204475A - Ground off-position detection device and method for airplane ground proximity warning system - Google Patents
Ground off-position detection device and method for airplane ground proximity warning system Download PDFInfo
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Abstract
The invention discloses a ground off-position detection device of an airplane near-ground alarm system and a detection method thereof, and the device comprises a detection device for detecting a cross-linked signal which is from the airplane near-ground alarm system and a related system and is used for controlling the operation of the airplane near-ground alarm system when the ground off-position function of the airplane near-ground alarm system is detected.
Description
Technical Field
The invention relates to the technical field of detection of cross-linked signals of an aircraft ground proximity warning system and an associated aircraft system, in particular to a ground off-position detection device of the aircraft ground proximity warning system and a detection method thereof.
Background
The airplane ground proximity warning system is an effective means for preventing the airplane from flying and colliding with the ground and improving the flying safety. With the increase of new tasks and performances of airplanes, the safe near-earth flight of various airplanes for military use, civil use and the like increasingly depends on the normal work of a near-earth warning system. The fault of the aircraft ground proximity warning system causes misjudgment and misjudgment of pilots, thereby causing the occurrence of ground proximity flight accidents.
Disclosure of Invention
The invention provides a ground dislocation detection device of an aircraft ground proximity warning system and a detection method thereof, which are used for solving the technical problems that no special equipment for detecting the functional fault of the aircraft ground proximity warning system exists in the prior art, the self-checking and the omission of an aircraft are caused, and the flight safety of the aircraft is influenced.
The technical scheme adopted by the invention is as follows:
according to one aspect of the invention, a ground off-position detection device of an aircraft ground proximity warning system is provided, which is used for detecting the aircraft ground proximity warning system when the aircraft is subjected to periodic inspection or special inspection, and comprises:
the signal simulation device is connected with the aircraft ground proximity warning system and is used for simulating the circuit working conditions of other systems of the aircraft related to the aircraft ground proximity warning system;
the signal conditioning unit is used for receiving the cross-linking signal sent by the aircraft ground proximity warning system, converting the cross-linking signal and outputting the signal to the signal acquisition and sending unit, and receiving the signal of the signal acquisition and sending unit, converting the signal and outputting the signal to the aircraft ground proximity warning system, so that the output signal meets the requirement of the aircraft ground proximity warning system on the working signal;
the signal acquisition and transmission unit is used for receiving the sampling data or transmitting the data and outputting the data to the central processing unit or the signal conditioning unit;
the bus communication unit is used for the communication of digital signals between the airplane ground proximity warning system and the central processing unit;
the central processing unit is wirelessly connected with the handheld terminal and is used for realizing data processing, conversion and transmission among the signal acquisition and transmission unit, the bus communication unit and the handheld terminal;
the wireless unit is used for realizing the wireless communication of data between the central processing unit and the handheld terminal;
the handheld terminal is in wireless connection with the central processing unit and is used for monitoring in real time and displaying monitoring information and monitoring results in real time;
and the power supply unit is used for converting a common 220V50Hz power supply into 28V direct current and supplying the direct current to the signal simulation device and the airplane ground proximity warning system.
Preferably, the signal simulation device is powered by the power supply unit when working; the hand-held terminal is internally provided with a battery as a power supply and is charged through a common 220V50Hz socket or a USB port.
Preferably, the cross-linked signals received and transmitted by the signal simulation device comprise airplane position signals, flight attitude signals, flight state signals, alarm signals, 429 bus digital signals and the like.
Preferably, the aircraft position signal corresponding to the cross-linked signal comprises longitude, latitude, absolute barometric altitude, relative barometric altitude, radio altitude, and the like; the flight attitude signal comprises a course angle, a pitch angle, a roll angle and the like; the flight state signals comprise ground speed, vacuum speed, gliding deviation, course deviation, landing configuration state of the undercarriage, landing configuration state of the flap and the like, and the alarm signals comprise a terrain alarm indicator lamp, a pull-up alarm indicator lamp, various voice signals and the like; 429 bus digital signals include digital versions of the above signals.
Preferably, the signal acquisition and transmission unit includes an I/O port for receiving and transmitting a switching value signal, an ADC sampling port for receiving a frequency value signal, and a DAC transmission port for transmitting an analog value signal, and the bus communication unit includes a bus port for receiving and transmitting 429 bus digital signals.
Preferably, the central processing unit is further provided with a data processing module for preprocessing the monitoring data.
Preferably, the central processing unit is further provided with a conversion module for converting the monitoring data into a digital signal, and the digital signal is used for wireless communication between the central processing unit and the handheld terminal.
Preferably, the handheld terminal is used for loading detection software of the detection device to realize ground off-position detection of the airplane ground proximity warning system function.
Preferably, the detection method comprises the steps that the central processing unit receives detection data generated under the drive of an input instruction of a system associated with the simulated aircraft ground proximity warning system, and on one hand, the detection data is generated after a signal conditioning unit receives a cross-linking signal of the aircraft ground proximity warning system, is converted and is sampled by a data acquisition and sending unit; on the other hand, the detection data is generated by the bus communication unit; the central processing unit carries out data preprocessing and conversion on the detection data and wirelessly transmits the data to the mobile phone terminal; and the handheld terminal monitors the detection data in real time, displays the test result in real time, and determines the fault type and the fault position according to the detection result.
The invention has the following beneficial effects:
the invention relates to a ground off-position detection device and a detection method of an airplane ground proximity alarm system, which are used for simulating, detecting, displaying and judging cross-linked signals of the airplane ground proximity alarm system and a related airborne system thereof, and displaying the cross-linked signals to ground crew through a handheld terminal display screen, thereby being convenient for monitoring and finding out the faults of the airplane ground proximity alarm system in time, solving the problem that the function faults of the airplane ground proximity alarm system in the past lack of detection means, meanwhile, the detection device has good portability, simple operation steps and intuitive test results, and greatly reducing the flight safety hidden dangers and flight accidents caused by misjudgment and misjudgment of pilots due to the faults of the airplane ground proximity alarm system.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic block diagram of a preferred embodiment of the detection apparatus of the present invention;
FIG. 2 is a diagram illustrating the connection between a detection device and an aircraft ground proximity warning system in an out-of-position state in accordance with a preferred embodiment of the present invention;
FIG. 3 is a schematic view of an operation panel of the signal simulation apparatus according to the preferred embodiment of the present invention;
FIG. 4 is a schematic diagram of the software main interface of the detection device in the preferred embodiment of the present invention;
FIG. 5 is a schematic diagram of a software alarm function checking interface of the detection apparatus according to the preferred embodiment of the present invention;
FIG. 6 is a schematic view of the function checking interface of the software signal conversion box of the detection device in the preferred embodiment of the present invention;
FIG. 7 is a flow chart illustrating the detection method in the preferred embodiment of the present invention.
Description of reference numerals:
1. an aircraft ground proximity warning system; 2. connecting a cable; 21. an aviation plug; 22. an aviation plug; 3. a detection device; 100. a signal simulation device; 200. a signal conditioning unit; 300. a signal acquisition and transmission unit; 400. a bus communication unit; 500. a central processing unit; 600. a wireless unit; 700. a handheld terminal; 800. a power supply unit.
Detailed Description
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
Referring to fig. 1-7, a ground off-position detection device of an aircraft ground proximity warning system and a detection method thereof include a detection device 3 for detecting a cross-linked signal from the aircraft ground proximity warning system 1 and its associated systems for controlling the operation of the aircraft ground proximity warning system 1 when the ground off-position function of the aircraft ground proximity warning system 1 is detected, wherein the detection device 3 includes a signal simulation device 100, a signal conditioning unit 200, a signal acquisition and transmission unit 300, a bus communication unit 400, a central processing unit 500, a wireless unit 600, a handheld terminal 700 and a power supply unit 800; the signal simulation device 100 is connected with the aircraft ground proximity warning system 1 and is used for simulating the circuit working conditions of other systems of the aircraft associated with the aircraft ground proximity warning system 1; the signal conditioning unit 200 is configured to receive the cross-linked signal sent by the aircraft ground proximity warning system 1, convert the cross-linked signal and output the converted signal to the signal acquisition and transmission unit 300, receive the signal from the signal acquisition and transmission unit 300, convert the converted signal and output the signal to the aircraft ground proximity warning system 1, so that the output signal meets the requirement of the aircraft ground proximity warning system 1 on the working signal; the signal acquisition and transmission unit 300 is configured to receive sampling data or transmit data, and output the data to the central processing unit 500 or the signal conditioning unit 200; the bus communication unit 400 is used for the communication of digital signals between the aircraft ground proximity warning system 1 and the central processing unit 500; the central processing unit 500 is wirelessly connected with the handheld terminal 700 and is used for realizing data processing, conversion and transmission among the signal acquisition and transmission unit 300, the bus communication unit 400 and the handheld terminal 700; a wireless unit 600 for implementing wireless communication of data between the central processing unit 500 and the handheld terminal 700; the handheld terminal 700 is wirelessly connected with the central processing unit 500 and is used for monitoring in real time and displaying monitoring information and monitoring results in real time; the power supply unit 800 is used for converting a common 220V50Hz power supply into 28V direct current and supplying the direct current to the signal simulation device 100 and the aircraft ground proximity warning system 1; the detection device 3 simulates, detects, displays and judges the cross-linking signals of the aircraft ground proximity warning system 1 and the associated airborne system, and displays the cross-linking signals to ground crew through the display screen of the handheld terminal 700, so that the faults of the aircraft ground proximity warning system 1 can be conveniently monitored and found in time, the problem that the function faults of the aircraft ground proximity warning system 1 in the prior airport lack a deviation detection means is solved, meanwhile, the detection device 3 is good in portability, simple in operation steps and visual in test result, and the flight safety hidden dangers and flight accidents caused by misjudgment and misjudgment of pilots due to the faults of the aircraft ground proximity warning system 1 are reduced to a great extent.
Referring to fig. 2, in the present embodiment, the detecting device 3 is connected to the aircraft ground proximity warning system 1 via the aviation plug 22, the detecting cable 2, and the aviation plug 21, and the wireless unit 600 implements wireless information communication between the central processing unit 500 and the handheld terminal 700. The detection device 3 of the embodiment can output proper normal working signals of the aircraft ground proximity warning system 1 to the aircraft ground proximity warning system 1 according to time sequence and working conditions, namely, signals of the position, the attitude, the state and the like of the aircraft are output to the aircraft ground proximity warning system 1, and the normal work of the aircraft ground proximity warning system 1 in an off-position state is ensured; the detection device 3 of the embodiment can also measure output information from the off-position aircraft ground proximity warning system 1, and realizes function check of the aircraft ground proximity warning system 1 in a ground off-position state through comprehensive judgment of the output information of the aircraft ground proximity warning system 1. Meanwhile, the input and output signals of the aircraft ground proximity warning system 1 can be displayed on a warning display of the aircraft ground proximity warning system 1, so that ground crew can conveniently know the simulated flight state of the aircraft and the working state of the aircraft ground proximity warning system 1; or the information can be displayed on the display screen of the handheld terminal 700, so that ground crew can conveniently check whether the function of the aircraft ground proximity warning system 1 is normal.
In this embodiment, the power supply unit 800 supplies power to the signal simulation apparatus 100 during operation; the handheld terminal 700 is provided with a battery as a power source and is charged through a common 220V50Hz socket or a USB port.
In this embodiment, the cross-linking signals received and transmitted by the signal simulation apparatus 100 include an aircraft position signal, a flight attitude signal, a flight status signal, an alarm signal, a 429 bus digital signal, and the like.
In this embodiment, the aircraft position signal corresponding to the cross-linked signal includes longitude, latitude, absolute barometric altitude, relative barometric altitude, radio altitude, and the like; the flight attitude signal comprises a course angle, a pitch angle, a roll angle and the like; the flight state signals comprise ground speed, vacuum speed, gliding deviation, course deviation, landing configuration state of the undercarriage, landing configuration state of the flap and the like, and the alarm signals comprise a terrain alarm indicator lamp, a pull-up alarm indicator lamp, various voice signals and the like; 429 bus digital signals include digital versions of the above signals.
In this embodiment, fig. 3 is a schematic view of an operation panel of the signal simulation apparatus 100 according to the preferred embodiment of the present invention. The device is used for being connected with the aircraft ground proximity warning system 1, simulating the circuit working conditions of other systems of the aircraft associated with the aircraft ground proximity warning system 1, and realizing the physical connection of signals between the detection device 3 and the aircraft ground proximity warning system 1. In addition, the operation panel is also used for fixing the electric connector, the circuit board, the signal lamp, the switch and the connecting wires thereof of the detection device 3, storing the connecting cable and the like. The operation panel is divided into two parts, namely a function area and a connection area. The functional area is used for monitoring the working state of the detection device 3 and comprises a direct current voltmeter, a direct current ammeter, a main switch, a system power supply switch, a communication lamp, a direct current fuse, a communication antenna and the like; the connection area is used for connecting a cable, and physical connection of signals between the detection device 3 and the aircraft ground proximity warning system 1 is realized. Further, the detection device 3 is internally used for mounting a circuit board and placing a connection cable and the like.
In this embodiment, the signal conditioning unit 200 is responsible for adjusting the switching value signal in the sending data transmitted from the I/O port in the signal collecting and sending unit 300 to the value required by the aircraft ground proximity warning system 1, and sending the value to the aircraft ground proximity warning system 1; the analog quantity signal in the sending data transmitted from the DAC port in the signal acquisition and sending unit 300 is adjusted to the value required by the aircraft ground proximity warning system 1 and sent to the aircraft ground proximity warning system 1; the method comprises the steps that after clutter and interference are filtered out from frequency signals in data collected by an aircraft ground proximity warning system 1, the voltage is regulated to an effective input range of a signal collecting and sending unit 300, and the signal is provided to an ADC sampling port of the signal collecting and sending unit 300; the switching signal in the data collected from the aircraft ground proximity warning system 1 is adjusted to the effective input range of the signal collecting and transmitting unit 300 and is provided to the I/O sampling port of the signal collecting and transmitting unit 300.
In this embodiment, the signal collecting and transmitting unit 300 includes an I/O port for receiving and transmitting a switching value signal, a differential/single-ended ADC sampling port for receiving a frequency value signal, and a DAC transmitting port for transmitting an analog value signal, and the bus communication unit 400 includes a bus port for receiving and transmitting 429 bus digital signals, so that the signal testing requirements of the detecting apparatus 3 can be fully satisfied due to the integration of the collection and transmission of various types of signals.
In this embodiment, the central processing unit 500 includes a 32-bit RISC ARM single-chip microcomputer, which integrates a control kernel of the real-time operating system, and the central processing unit 500 is further provided with a data processing module for preprocessing monitoring data, and processes and transmits data transmitted from the signal acquisition and transmission unit 300, the bus communication unit 400, and the handheld terminal 600; the cpu 500 is further provided with a conversion module for converting the monitoring data into a digital signal, converts the data transmitted from the signal acquisition and transmission unit 300 and the bus communication unit 400 into a digital signal, and transmits the digitized sampling data to the handheld terminal 700 through the wireless unit 600.
In this embodiment, the wireless unit 600 includes two components, one of the components is integrated in the central processing unit 500, the other component is integrated in the handheld terminal 700, when the detection device 3 works, the two components work together to realize wireless data transmission between the central processing unit 500 and the handheld terminal 700, and the data transmission of the wireless unit 600 conforms to the LORA2.0 protocol.
In this embodiment, in order to not be limited by the use limitation of ac power supply and meet the requirement of airport detection, the detection device 3 further includes a power supply unit 800, which is configured to convert the common 220V50Hz power supply into 28V dc power to supply power to the detection device 3 and the off-site aircraft ground proximity warning system, in order to implement the conversion and the working stability of the power supply, a conversion module and a voltage stabilizing circuit of the dc power supply are added in the circuit of the power supply unit 800 to ensure the normal operation of the detection device 3, the detection device has a small structure volume and is convenient to carry by using the power supply unit 800, the input voltage range is wide, the input and output are isolated, and the anti-interference capability is strong, and preferably, a short circuit/overcurrent protection circuit is provided in the power supply unit 800 to enhance the reliability of power supply.
In this embodiment, the handheld terminal 700 is used for loading software of the detection device 3 to realize ground off-position detection of the function of the aircraft ground proximity warning system 1.
Preferably, in the software of the ground off-position detection device 3 of the aircraft ground proximity warning system 1 in the preferred embodiment of the present invention, the interfaces mainly include three parts, namely, a main interface as shown in fig. 4, a warning function check interface as shown in fig. 5, and a signal conversion box function check interface as shown in fig. 6.
In this embodiment, the software of the detection device of the handheld terminal 700 is developed based on an embedded computer platform wince6.0 system, the software of the detection device 3 is a core part of the detection device 3, the embedded device is used as a hardware core platform, the wince6.0 system is used as an actual running software platform, the handheld terminal 700 receives signal data from the central processing unit 500 through the wireless unit 600, and further processes, displays and judges the data to determine whether the function of the aircraft ground proximity warning system is normal, and the handheld terminal 700 is provided with a display screen and can display the detection result in real time so that ground crew can observe and read the data, and can respond to keys on the handheld terminal 700 to complete the switching between the software function and the working mode.
In this embodiment, the software of the detection device 3 is designed in a modular manner, and the software of the detection device 3 can complete system self-checking, signal sending and signal acquisition, realize real-time processing of information, and display the detection result on a display screen in real time.
According to the detection requirements of the detection device 3, the detection software is designed to mainly complete the following work:
(1) checking the alarm function of the aircraft ground proximity alarm system 1;
(2) checking the function of the signal conversion box equipment of the airplane ground proximity warning system 1;
(3) simulating working signals of the aircraft ground proximity warning system 1 in an off-position state, wherein the working signals mainly comprise aircraft position signals, flight attitude signals, flight state signals and the like;
(4) according to different alarm modes, off-position simulation working signals of the aircraft ground proximity alarm system 1 are digitized and graphically displayed in real time;
(5) collecting alarm signals output by the aircraft ground proximity alarm system 1;
(6) and displaying the detection data in real time, judging whether the function of the aircraft ground proximity warning system 1 is normal or not according to the warning information, and giving out fault information.
In the embodiment, the ground off-position detection device of the aircraft ground proximity warning system and the detection method thereof comprise a detection method, wherein a central processing unit 500 receives detection data generated under the drive of a simulation system input instruction associated with the aircraft ground proximity warning system 1, on one hand, the detection data is generated after a signal conditioning unit 200 receives a cross-linking signal of the aircraft ground proximity warning system 1, and the cross-linking signal is converted and is sampled by a signal acquisition and transmission unit 300; on the other hand, the detection data is generated by the bus communication unit 400; the central processing unit 500 performs data preprocessing and conversion on the detection data, and wirelessly transmits the detection data to the handheld terminal 700; the handheld terminal 700 monitors the detection data in real time, displays the test result in real time, and determines the fault type and the fault position according to the detection result.
Referring to fig. 7, in the embodiment, a detection flow of the ground dislocation detection method of the aircraft ground proximity warning system 1 is shown, and a detection process is as follows:
(1) the power supply unit 800 supplies power to the aircraft ground proximity warning system 1 and the detection device in the off-position state, so that the aircraft ground proximity warning system and the detection device are in a preparation working state;
(2) after power is supplied, software is started in the handheld terminal 700, a software main interface (fig. 4) is entered, at this time, the software establishes communication connection between the handheld terminal 700 and the central processing unit 500 in the detection device 3, when the connection is normal, a communication indicator lamp in the main interface of fig. 4 turns into green and red to alternately flash, otherwise, the connection is abnormal, after the normal connection between the handheld terminal 700 and the central processing unit 500 in the detection device 3 is established, the detection device 3 starts self-detection, and a self-detection result is displayed in a text box after the self-detection state in a code form;
(3) after the self-checking is normal, clicking an alarm function checking button of the main interface, entering an alarm function checking interface (figure 5), and when checking the ground off-position alarm function of the aircraft ground proximity alarm system 1, firstly selecting an alarm mode and then selecting a checking mode (automatic testing or manual testing); secondly, clicking a start button to start the alarm function check of the selected alarm mode, if the selected alarm mode is the automatic check mode, simulating the flight state parameters of the airplane according to a preset rule by software, outputting the flight state parameters to the off-position airplane ground proximity alarm system 1 through the signal acquisition and transmission unit 300 and the bus communication unit 400, enabling the off-position airplane ground proximity alarm system to work normally, wherein at the moment, an editing frame on an alarm function check interface is in a readable state, the simulated airplane flight state parameter values are displayed in real time, and meanwhile, a coordinate graph on the interface also displays the simulated airplane state in real time; if the aircraft is in the manual inspection mode, at the moment, an editing frame on the interface is in an editable state, the flight state parameter value of the aircraft needs to be set manually, and after a start button is clicked, the flight state parameter value of the aircraft is output to the aircraft ground proximity warning system 1 in the off-position state through the signal acquisition and transmission unit 300 and the bus communication unit 400 so as to enable the aircraft ground proximity warning system to work normally; after the aircraft ground proximity warning system 1 works normally, software measures the warning information returned by the aircraft ground proximity warning system 1 through the signal acquisition and sending unit 300 and the bus communication unit 400, judges whether the warning function is normal or not according to the warning information, displays the checking result on an interface in a code form, and at the moment, the warning function of the current warning mode is checked completely. According to the method, the alarm functions of the rest alarm modes are checked in sequence, and when the alarm functions of all the alarm modes are checked, the alarm function check interface (figure 5) is quitted and the main interface (figure 4) is returned;
(4) after the alarm function is checked, the signal conversion box function check button on the main interface (fig. 4) is clicked, and the signal conversion box function check interface (fig. 6) is entered to check the signal conversion box function. Firstly, setting a flight state parameter value of a simulated airplane in a signal sending value edit frame of the interface; secondly, clicking a determination button, outputting a set parameter value simulating the flight state of the airplane to a signal conversion box through the signal acquisition and transmission unit 300 and the bus communication unit 400, measuring an output signal of the signal conversion box through the bus communication unit 400, and displaying the output signal in a readable edit box of the measured value on a function check interface (figure 6) of the signal conversion box; then, the software judges the conversion result of each signal parameter according to the input and output signal parameter values of the signal conversion box, and displays the conversion result in a readable edit box of the state on a function check interface (figure 6) of the signal conversion box; finally, the software synthesizes the conversion judgment results of each signal parameter of the signal conversion box, determines whether the function of the signal conversion box is normal, displays the inspection result on a function inspection interface (figure 6) of the signal conversion box in a code form, finishes the inspection of the function of the signal conversion box, and exits from the function inspection interface (figure 6) of the signal conversion box;
(5) and (3) after the ground off-position function of the aircraft ground proximity warning system 1 is checked, quitting the software main interface (figure 4) and finishing the checking process.
The invention selects a general embedded computer on the market as a main control platform, takes the touch screen button and the button switch as input control, and displays the test result in real time by using the handheld terminal 700. The method is characterized in that a signal simulation device 100, a signal conditioning unit 200, a signal acquisition and transmission unit 300, a bus communication unit 400, a central processing unit 500, a wireless unit 600, a handheld terminal 700 and a power supply unit 800 are designed for cross-linked signals of an aircraft ground proximity alarm system 1 and other aircraft systems related to the aircraft ground proximity alarm system, and the ground departure detection method logic and algorithm of the aircraft ground proximity alarm system 1 are designed and compiled on a WinCe6.0 software platform, so that the ground departure detection device of the aircraft ground proximity alarm system is finally developed. The test proves that the method is feasible, the feedback of the client on-site use is good, the ground off-position detection requirement of the airplane near-ground alarm system 1 is met, and the problem that the ground off-position detection of the airplane near-ground alarm system 1 in the past is lack of a detection means is solved; meanwhile, the device has good portability, simple operation steps and visual test results, meets the use requirements of airports, and greatly reduces the flight safety hidden dangers and flight accidents caused by misjudgment and misjudgment of pilots due to faults of the airplane ground proximity warning system 1.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope and implementation of the present invention, and various modifications and variations of the present invention may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A ground off-position detection device and a detection method of an aircraft ground proximity warning system are characterized in that: the system comprises a detection device (3) for detecting a cross-linking signal which comes from an aircraft ground proximity warning system (1) and a related system and is used for controlling the operation of the aircraft ground proximity warning system (1) when the ground off-position function of the aircraft ground proximity warning system (1) is detected, wherein the detection device (3) comprises a signal simulation device (100), a signal conditioning unit (200), a signal acquisition and sending unit (300), a bus communication unit (400), a central processing unit (500), a wireless unit (600), a handheld terminal (700) and a power supply unit (800);
the signal simulation device (100) is connected with the aircraft ground proximity warning system (1) and is used for simulating the circuit working condition of other systems of the aircraft associated with the aircraft ground proximity warning system;
the signal conditioning unit (200) is used for receiving the cross-linking signal sent by the aircraft ground proximity warning system (1), converting the cross-linking signal and outputting the signal to the signal acquisition and sending unit (300), receiving the signal of the signal acquisition and sending unit (300), converting the signal and outputting the signal to the aircraft ground proximity warning system (1), and enabling the output signal to meet the requirement of the aircraft ground proximity warning system (1) on the working signal;
the signal acquisition and transmission unit (300) is used for receiving sampling data or transmitting data and outputting the data to the central processing unit (500) or the signal conditioning unit (200);
the bus communication unit (400) is used for the communication of digital signals between the aircraft ground proximity warning system (1) and the central processing unit (500);
the central processing unit (500) is in wireless connection with the handheld terminal (700) and is used for realizing data processing, conversion and transmission among the signal acquisition and transmission unit (300), the bus communication unit (400) and the handheld terminal (700);
the wireless unit (600) is used for realizing the wireless communication of data between the central processing unit (500) and the handheld terminal (700);
the handheld terminal (700) is in wireless connection with the central processing unit (500) and is used for monitoring in real time and displaying monitoring information and monitoring results in real time;
and the power supply unit (800) is used for converting a common 220V50Hz power supply into 28V direct current and supplying the direct current to the signal simulation device (100) and the aircraft ground proximity warning system (1).
2. The aircraft ground alarm system ground off-position detection device and the detection method thereof according to claim 1, characterized in that the signal simulation device (100) is powered by a power supply unit (800) when in operation; the hand-held terminal (700) is internally provided with a battery as a power supply and is charged through a common 220V50Hz socket or a USB port.
3. The ground off-position detection device and the ground off-position detection method for the aircraft ground proximity alarm system according to claim 1, wherein the cross-linked signals received and transmitted by the signal simulation device (100) comprise aircraft position signals, flight attitude signals, flight state signals, alarm signals, 429 bus digital signals and the like.
4. The aircraft ground proximity warning system ground off-position detection device and the detection method thereof according to claim 3, characterized in that: the aircraft position signals corresponding to the cross-linked signals comprise longitude, latitude, absolute barometric altitude, relative barometric altitude, radio altitude and the like; the flight attitude signal comprises a course angle, a pitch angle, a roll angle and the like; the flight state signals comprise ground speed, vacuum speed, gliding deviation, course deviation, landing configuration state of the undercarriage, landing configuration state of the flap and the like, and the alarm signals comprise a terrain alarm indicator lamp, a pull-up alarm indicator lamp, various voice signals and the like; 429 bus digital signals include digital versions of the above signals.
5. The aircraft ground proximity warning system ground off-position detection device and the detection method thereof according to claim 1, characterized in that: the signal acquisition and transmission unit (300) comprises an I/O port for receiving and transmitting a switching value signal, an ADC sampling port for receiving a frequency quantity signal and a DAC transmitting port for transmitting an analog quantity signal, and the bus communication unit (400) comprises a bus port for receiving and transmitting 429 bus digital signals.
6. The aircraft ground proximity warning system ground off-position detection device and the detection method thereof according to claim 1, characterized in that: the central processing unit (500) is also arranged in a data processing module for preprocessing the monitoring data.
7. The aircraft ground proximity warning system ground off-position detection device and the detection method thereof according to claim 1, characterized in that: the central processing unit (500) is further provided with a conversion module for converting the monitoring data into a digital signal, and the digital signal is used for wireless communication between the central processing unit (500) and the handheld terminal (700).
8. The aircraft ground proximity warning system ground off-position detection device and the detection method thereof according to claim 1, characterized in that: the handheld terminal (700) is used for loading detection software of the detection device (3) and realizing ground off-position detection of the function of the airplane ground proximity warning system (1).
9. The ground off-position detection device and the detection method thereof of the aircraft ground proximity alarm system according to any one of claims 1 to 8, characterized in that: the detection method comprises the steps that a central processing unit (500) receives detection data generated under the drive of a simulation system input instruction associated with an aircraft ground proximity warning system (1), on one hand, the detection data are generated after a signal conditioning unit (200) receives a cross-linking signal of the aircraft ground proximity warning system (1), are converted and are sampled by a signal acquisition and sending unit (300); on the other hand, the detection data is generated by a bus communication unit (400); the central processing unit (500) performs data preprocessing and conversion on the detection data and wirelessly transmits the detection data to the handheld terminal (700); the handheld terminal (700) monitors the detection data in real time, displays the test result in real time, and determines the fault type and the fault position according to the detection result.
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