CN218806626U

CN218806626U - Frequency sensitive monitor tester

Info

Publication number: CN218806626U
Application number: CN202223218939.4U
Authority: CN
Inventors: 白筠; 黄娟; 何俊; 刘天天; 魏倩茹; 徐自国
Original assignee: Chengdu Qixin Aviation Technology Co ltd; Equipment Repairing Factory Chengdu Aviation Station No4 Air Force
Current assignee: Chengdu Qixin Aviation Technology Co ltd; Equipment Repairing Factory Chengdu Aviation Station No4 Air Force
Priority date: 2022-12-02
Filing date: 2022-12-02
Publication date: 2023-04-07
Anticipated expiration: 2032-12-02

Abstract

The application relates to the technical field of aircraft test instruments and discloses a frequency-sensitive monitor tester, including test mainboard, operating panel and alternating current signal unit, the test mainboard sets up on operating panel, and operating panel and alternating current signal unit hold in proper order down in the box from last. This application adopts the modular design thinking, sets up different functional module in same box, has reduced equipment volume, weight and numerous and diverse cable connection, conveniently carries and uses more, and the holistic degree of integrating of device is also higher.

Description

Frequency sensitive monitor tester

Technical Field

The application relates to the technical field of aircraft test instruments, in particular to a frequency sensitive monitor tester.

Background

Various monitoring systems are loaded on the airplane and used for monitoring the running state of each part of the airplane, so that the safe running of the airplane is ensured. The frequency sensitive monitor is a very important monitoring device, and is mainly used for monitoring the operating state of an engine and the state of a hydraulic system on an aircraft, so that it is very important to test and detect the frequency sensitive monitor periodically to verify the performance of the frequency sensitive monitor.

The frequency sensitive monitor tester is an instrument device specially used for testing and checking the performance of the frequency sensitive monitor, establishes conditions including frequency change, load condition, state change, fault indication and the like by simulating various input states of the frequency sensitive monitor during use, and is used for testing the functions of the frequency sensitive monitor so as to achieve the purpose that an operator can quickly judge whether the frequency sensitive monitor to be tested works normally. The current frequency sensitive monitor tester has large volume and low integration degree, and is very inconvenient to carry and use.

Disclosure of Invention

In order to overcome the problems and the defects existing in the prior art, the frequency sensitive monitor tester has the advantages of high integration degree and convenience in carrying and using.

In order to achieve the above object, the technical solution of the present application is as follows:

a frequency sensitive monitor tester comprises a test mainboard, an operation panel and an alternating current signal unit, wherein the test mainboard is arranged on the operation panel, and the operation panel and the alternating current signal unit are sequentially accommodated in a box body from top to bottom; wherein, the first and the second end of the pipe are connected with each other,

the operation panel comprises a substrate, a touch display screen, operation keys, a conversion power module, a first aerial plug, a second aerial plug and a main switch, wherein the touch display screen and the operation keys are arranged on the substrate; the operation key is connected with an operation key circuit board which is fixed on the substrate and is connected into the test mainboard; the touch display screen, the first aviation plug, the conversion power supply module and the main switch are respectively connected with the test mainboard; the second aviation plug is connected with the conversion power supply module; the base plate is also provided with an air outlet and an air inlet;

the alternating current signal unit comprises a mounting plate and an alternating current signal module integrated on the mounting plate, the mounting plate is fixed on a bottom plate of the box body, and a fan control circuit board are also arranged on the mounting plate; the fan is connected with an air outlet hose, and the other end of the air outlet hose is connected with an air outlet on the substrate; the alternating current signal module is respectively connected with the first aviation plug, the second aviation plug and the test mainboard; the fan control circuit board is respectively connected with the fan and the test mainboard.

Preferably, still be provided with inside hollow radiating block on the mounting panel, be provided with import and export on the lateral wall of radiating block, the import of radiating block passes through the hose and is connected with the fan, and the export is connected with the air outlet on the base plate through the air-out hose, radiating block inside is provided with a plurality of baffles, constitutes radiating passage between the adjacent baffle, by import to export, radiating passage communicates in the radiating block, forms labyrinth heat radiation structure.

Preferably, the air outlet and the air inlet are arranged at two ends of the substrate.

Preferably, the surface cover of the touch display screen is provided with a protective film.

Preferably, the top of the box body is open, an outer cover is arranged at the opening, and the outer cover is hinged with one side of the box body.

Preferably, an operation panel supporting platform is arranged on the side wall of the box body along the circumferential direction, the operation panel is installed on the operation panel supporting platform, and a shock-absorbing rubber pad is arranged between the operation panel and the operation panel.

Preferably, the box body is provided with rollers.

Preferably, the box body is provided with a pull rod.

The beneficial effect of this application:

(1) This application adopts the modular design thinking, sets up different functional module in same box, has reduced equipment volume, weight and numerous and diverse cable connection, conveniently carries and uses more, and the holistic degree of integrating of device is also higher.

(2) This application adopts base plate and mounting panel to carry out the layered structure design with the inner space of box respectively, and each functional module is installed on corresponding face, through reasonable layout structure design, make full use of the interior finite space of box to the radiating effect of device has also been improved.

(3) In this application, be provided with the radiating block on the mounting panel, the inside of radiating block is provided with the heat radiation structure of labyrinth, can fully carry out the heat exchange in the box, improves the radiating effect.

Drawings

The foregoing and following detailed description of the present application will become more apparent when read in conjunction with the following drawings, wherein:

FIG. 1 is a schematic view of the overall structure of the tester of the present application;

FIG. 2 is a schematic view of the internal structure of the tester of the present application;

FIG. 3 is a top view of the operator panel of the present application;

FIG. 4 is a side view of the operator panel of the present application;

FIG. 5 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 3;

FIG. 6 is a top view of an AC signal unit according to the present application;

FIG. 7 is a front view of an AC signal unit of the present application;

FIG. 8 is a side view of an AC signal unit of the present application;

fig. 9 is a schematic view of an internal structure of the heat dissipation block of the present application.

In the figure:

1. testing the main board; 2. an operation panel; 3. an alternating current signal unit; 4. a box body; 5. operating a key; 6. a power supply conversion module; 8. a first air navigation plug; 9. a second aviation plug; 11. an air outlet; 12. an air inlet; 13. a main switch; 15. a fan; 16. a fan control circuit board; 17. an alternating current signal module; 19. an air outlet hose; 21. a heat dissipating block; 22. a partition plate; 23. a heat dissipation channel; 24. a protective film; 25. an outer cover; 26. an operation panel support table; 27. a roller; 28. a pull rod; 29. a special-shaped joint; 101. a touch display screen; 201. a substrate; 301. and (7) mounting the plate.

Detailed Description

The technical solutions for achieving the objects of the present invention are further illustrated by the following specific examples, and it should be noted that the technical solutions claimed in the present application include, but are not limited to, the following examples.

Example 1

Various monitoring systems are loaded on the airplane and used for monitoring the running state of each part of the airplane, so that the safe running of the airplane is ensured. The frequency sensitive monitor is a very important monitoring device, and is mainly used for monitoring the operating state of an engine and the state of a hydraulic system on an aircraft, so that it is very important to test and detect the frequency sensitive monitor regularly to verify the performance of the frequency sensitive monitor.

The frequency sensitive monitor tester is an instrument device specially used for testing and checking the performance of the frequency sensitive monitor, establishes conditions including frequency change, load condition, state change, fault indication and the like by simulating various input states of the frequency sensitive monitor during use, and is used for testing the functions of the frequency sensitive monitor so as to achieve the purpose that an operator quickly judges whether the frequency sensitive monitor to be tested works normally or not. The current frequency sensitive monitor tester has large volume and low integration degree, and is very inconvenient to carry and use.

Based on this, this embodiment provides a frequency sensitive watch-dog tester, adopts the modular design thinking, with the integrated setting of each functional module in a box, has reduced equipment volume, weight and numerous and diverse cable connection, conveniently carries and uses more, and the holistic degree of integrating of device is also higher.

The embodiment discloses a frequency sensitive monitor tester, which mainly comprises three main functional modules, namely a test mainboard 1, an operation panel 2 and an alternating current signal unit 3, and is shown in attached figures 1-8 of the specification; the test mainboard 1 is mainly used for judging and outputting the performance index of the tested piece based on the signal fed back by the tested piece, the operation panel 2 is mainly used for realizing man-machine information interaction, and the alternating-current signal unit 3 is mainly used for providing a test signal of the tested piece; further, the test main board 1 is arranged on the operation panel 2, the operation panel 2 and the alternating current signal unit 3 are sequentially accommodated in the box body 4 from top to bottom, and the operation panel 2 is located above the alternating current signal unit 3; wherein the content of the first and second substances,

the operation panel 2 comprises a substrate 201 made of aluminum alloy, the substrate 201 is connected with the side wall of the box body 4, and the substrate 21 is respectively provided with a touch display screen 101, an operation key 5, a conversion power supply module 6, a first aviation plug 8, a second aviation plug 9, an air outlet 11, an air inlet 12 and a main switch 13; the touch display screen 101 is connected with the test mainboard 1 through a connector, and performs signal transmission with the test mainboard 1 to realize human-computer interaction; the operation key 5 is connected with an operation key circuit board, the operation key circuit board is fixed on the lower surface of the substrate 201 and is connected into the test mainboard 1 through a cable, and the operation key circuit board is connected with the test mainboard 1 and transmits signals; the first aviation plug 8, the conversion power supply module 6 and the main switch 13 are respectively connected with the test mainboard 1; the second aviation plug 9 is connected with the conversion power supply module 6; the touch display screen 101 is also connected with the conversion power supply module 6;

the alternating current signal unit 3 comprises a mounting plate 301, the mounting plate 301 is fixed on a bottom plate of the box body 4, and a fan 15, a fan control circuit board 16, an alternating current signal module 17 and a radiating block 21 are integrated on the mounting plate 301; the alternating current signal module 17 is respectively connected with the first aviation plug 8, the second aviation plug 9 and the test mainboard 1; the fan control circuit board 16 is respectively connected with the fan 15 and the test mainboard 1; the radiating block 21 is hollow inside and is of a box structure, an inlet and an outlet are correspondingly formed in the side wall of the radiating block 21, the inlet of the radiating block 21 is connected with the fan 15 through a hose, the outlet of the radiating block 21 is connected with an air outlet hose 19, and the other end of the air outlet hose 19 is connected with the air outlet 11 in the substrate 201.

In this embodiment, it should be noted that the test main board 1, the touch display 101, the conversion power module 6, the first navigation plug 8, the second navigation plug 9, the operation key circuit board, and other components are all fastened on the substrate 201 by stainless steel screws, nuts, and flat elastic pads.

In this embodiment, it should be further noted that the fan 15, the fan control circuit board 16 and the ac signal module 17 are respectively disposed on the mounting board 301 through corresponding mounting brackets.

The heat dissipation block 21 is directly fixed to the mounting board 301, and since the ac signal module 17 is the main heat source of the entire apparatus, the heat dissipation block 21 is disposed below the mounting block of the ac signal module 17.

In this embodiment, the air outlet hose 19 is connected to the air outlet 11 of the base plate 201 through a special-shaped joint 29, and the special-shaped joint 29 is fixed on the lower surface of the base plate 201 by screws.

The working principle of the tester is as follows:

in the device of the application, the first navigation plug 8 is used for being connected with the tested equipment and outputting a test signal to the tested equipment, and meanwhile, the tested equipment returns a feedback signal to the tester through the navigation plug interface; the second aviation plug 9 is used for being connected with a mains supply to supply power to the whole device, and the specific principle is as follows:

the power supply cable is connected with a second aviation plug 9 of the tester, 220V commercial power is input, then two ends of the test connection cable are respectively connected with the first aviation plug 8 and the tested device, after a main switch button on the operation panel is pressed, the tester is electrified, the display screen is lightened to start self-checking, and after the self-checking is successful, the main interface is accessed, and corresponding instruction operation is carried out on the main interface. When the tester works, alternating current switched on by the power switch is divided into two paths, one path enters the alternating current signal module 17, and the other path enters the conversion power module 6, and power input is provided for the 3-phase alternating current signal source and the measurement and control main board respectively.

After the commercial power input through the second aviation plug 9 enters the alternating current signal module 17, the alternating current signal module 17 converts the 220V alternating current commercial power into a direct current voltage signal through an internal rectification filter circuit, the direct current voltage signal is converted into a three-phase alternating current signal through an amplification shaping circuit, the module controller adjusts the voltage amplitude and the frequency of the output three-phase alternating current signal through controlling the amplification shaping circuit, the three-phase alternating current signal is input to a tested device (frequency sensitive monitor) through a connecting cable after the voltage current value is confirmed to be within a safety range through a detection protection circuit, and the frequency sensitive monitor can make different logic feedbacks after receiving the three-phase alternating current signals with different frequencies. After the voltage and current signals fed back enter the tester through the first aviation plug 8, the voltage and current signals are measured through the detection circuit, and the size of the voltage and current signals is displayed on the touch display screen 101 so that an operator can judge whether the work of the tested piece is normal or not.

After entering the conversion power module 6, the commercial power input through the second aviation plug 9 is subjected to voltage reduction, rectification and filtering through the AC/DC circuit, and then DC12V and DC5V direct current power supplies are output. And after passing through the 1A and 2A fuses, the direct current power supply respectively supplies power to the touch display screen and the control circuit.

The ventilation and heat dissipation principle of the device is as follows:

in this embodiment, the air inlet 12 and the air outlet 11 are disposed at two ends of the substrate 201, and after entering the box 4 through the air inlet 12, the external air passes through the components inside the box 4 and then enters the fan 15 from right to left, and the air is pressurized by the fan 15, passes through the hose and the heat dissipation block 21, takes away heat from the heat source on the heat dissipation block 21, and finally flows through the air outlet hose 19, and discharges the hot air from the air outlet 11. This heat dissipation design keeps apart cold wind and hot-blast physics, avoids cold, hot-blast secondary to mix, in time discharges hot-blast outside box 4, has improved the radiating efficiency greatly.

Example 2

As a preferable implementation manner, on the basis of embodiment 1, in this embodiment, in order to improve the heat dissipation effect of the device, the heat dissipation block 21 is made of aluminum, and the structure of the heat dissipation block 21 is modified accordingly. Referring to the attached figure 9 in the specification, a plurality of partition plates 22 are arranged inside the heat dissipation block 21, the adjacent partition plates 22 are arranged in a staggered manner, a plurality of heat dissipation channels 23 are formed inside the heat dissipation block 21, and the heat dissipation channels 23 are sequentially communicated end to end in the heat dissipation block 21 from an inlet to an outlet to form a labyrinth type heat dissipation structure. After the air enters the radiating block 21, the air shuttles back and forth in the radiating channels 23 in the radiating block 21, so that the contact time and the contact area of the air and the radiating block 21 are increased, the air can be fully subjected to heat exchange with the radiating block 21, the radiating and cooling effects are realized, the air is finally discharged from the outlet of the radiating block 21, and the air is finally discharged to the outside of the box body 4 through the air outlet hose 19.

Further, in the present embodiment, in order to protect the touch display screen 101 and prolong the service life of the touch display screen 101, the surface of the touch display screen 101 is covered with a protective film 24, and the protective film 24 is a PVC protective film with a thickness of 0.5mm, so as to prevent the screen from being scratched or scratched.

Further, in the present embodiment, the top of the box 4 is open, an outer cover 25 is disposed at the opening, the outer cover 25 is hinged to one side of the box 4, and a storage bag 26 is disposed at the side of the outer cover 25 facing the opening of the box 4. In this embodiment, when the cover 25 is closed, the components of the entire device are accommodated in the closed box space, and when the device is not in operation, the functional components of the device can be protected.

Further, in the present embodiment, an operation panel support base 26 is provided on a side wall of the case 4 in the circumferential direction, the operation panel 2 is mounted on the operation panel support base 26, and a cushion rubber pad is provided therebetween.

Further, in this embodiment, in order to facilitate carrying the device, the bottom of the box 4 is provided with rollers 27, and the top is provided with a pull rod 28. The whole tester is in a structural form of a draw-bar box, and can be conveniently carried.

In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present application and for simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the scope of the present application.

In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The foregoing is directed to embodiments of the present invention, which are not limited thereto, and any simple modifications and equivalents thereof according to the technical spirit of the present invention may be made within the scope of the present invention.

Claims

1. A frequency sensitive monitor tester is characterized by comprising a test mainboard (1), an operation panel (2) and an alternating current signal unit (3), wherein the test mainboard (1) is arranged on the operation panel (2), and the operation panel (2) and the alternating current signal unit (3) are sequentially accommodated in a box body (4) from top to bottom;

the operation panel (2) comprises a substrate (201), a touch display screen (101) arranged on the substrate (201), operation keys (5), a conversion power module (6), a first aerial plug (8), a second aerial plug (9) and a main switch (13), wherein the substrate (201) is connected with the inner side wall of the box body (4); the operation key (5) is connected with an operation key circuit board which is fixed on the substrate (201) and is connected into the test mainboard (1); the touch display screen (101), the first aviation plug (8), the conversion power supply module (6) and the main switch (13) are respectively connected with the test mainboard (1); the second aviation plug (9) is connected with the conversion power supply module (6); the substrate (201) is also provided with an air outlet (11) and an air inlet (12);

the alternating current signal unit (3) comprises a mounting plate (301) and an alternating current signal module (17) integrated on the mounting plate (301), the mounting plate (301) is fixed on a bottom plate of the box body (4), and the mounting plate (301) is further provided with a fan (15) and a fan control circuit board (16); the fan (15) is connected with an air outlet hose (19), and the other end of the air outlet hose (19) is connected with an air outlet (11) on the substrate (201); the alternating current signal module (17) is respectively connected with the first aviation plug (8), the second aviation plug (9) and the test mainboard (1); the fan control circuit board (16) is respectively connected with the fan (15) and the test mainboard (1).

2. The frequency-sensitive monitor tester according to claim 1, wherein the mounting plate (301) is further provided with a heat dissipation block (21) with a hollow interior, the side wall of the heat dissipation block (21) is provided with an inlet and an outlet, the inlet of the heat dissipation block (21) is connected with the fan (15) through a hose, the outlet is connected with the air outlet (11) on the substrate (201) through an air outlet hose (19), the heat dissipation block (21) is internally provided with a plurality of partition plates (22), a heat dissipation channel (23) is formed between the adjacent partition plates (22) and is connected from the inlet to the outlet, and the heat dissipation channel (23) is communicated in the heat dissipation block (21) to form a labyrinth heat dissipation structure.

3. The frequency sensitive monitor tester according to claim 1, wherein the air outlet (11) and the air inlet (12) are disposed at both ends of the substrate (201).

4. The frequency sensitive monitor tester of claim 1 wherein the surface of the touch screen display (101) is covered with a protective film (24).

5. The frequency sensitive monitor tester according to claim 1, characterized in that the top of the box body (4) is opened, an outer cover (25) is arranged at the opening, and the outer cover (25) is hinged with one side of the box body (4).

6. The frequency sensitive monitor tester according to claim 1, wherein the side wall of the box body (4) is provided with an operation panel support table (26) along the circumferential direction, the operation panel (2) is mounted on the operation panel support table (26), and a shock-absorbing rubber pad is arranged between the operation panel support table and the operation panel.

7. Frequency sensitive monitor tester according to claim 1, characterized in that the box (4) is provided with rollers (27).

8. Frequency sensitive monitor tester according to claim 1, characterized in that a pull rod (28) is arranged on the box (4).