CN111308131A

CN111308131A - Air-cooled general test case of LRM module

Info

Publication number: CN111308131A
Application number: CN202010236061.3A
Authority: CN
Inventors: 陈晓红; 王鹏
Original assignee: Sichuan Hongchuang Electronic Technology Co ltd
Current assignee: Sichuan Hongchuang Electronic Technology Co ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2020-06-19

Abstract

The invention discloses an LRM module air-cooled universal test case which comprises a case body, a connecting plate and a universal test module for testing LRM module functions, wherein an FMC connector, an LRM connector and a mixed power socket are arranged on the connecting plate; the universal test module comprises a shell and a test circuit board, the test circuit board is arranged inside the shell, an FMC interface matched with the FMC connector is arranged outside the shell, and the connecting board is connected with the universal test module through the FMC connector and the FMC interface; the inner wall of the box body is provided with a supporting bar, and the testing circuit bottom plate and the universal testing circuit board are fixed on the supporting bar. The invention aims to provide an LRM module air-cooled general test case, which changes a printed board of a connecting board into a simple form of connecting a PCBA board with a general test module, and solves the problems of high design cost, long design period, large size of the printed board and poor heat dissipation of the connecting board.

Description

Air-cooled general test case of LRM module

Technical Field

The invention relates to the technical field of optical fiber connectors, in particular to an LRM module air-cooled universal test case.

Background

With the development of military LRM modules, a test chassis is required to complete the functional test and verification of the LRM module in the development stage of the LRM module.

In the prior art, an LRM module is generally connected to a test board through a chassis, and then a power-on function test is performed, and the LRM module is provided with a plug-in and locking device, so that the connection and separation of the LRM module and the test board can be easily realized after the LRM module is assembled with the chassis.

All test functions are designed on the test bottom plate, so that the design cost of the test bottom plate is high, the period is prolonged, the size of the test bottom plate is large, and devices on the test bottom plate are naturally radiated through the radiating plate to cause problems easily during high-temperature tests.

Disclosure of Invention

The invention aims to provide an LRM module air-cooled universal test case, which changes a printed board of a test base plate into a simple form of connecting a PCBA board with a universal test module, and solves the problems of high design cost, prolonged design period, larger size of the test base plate and poor heat dissipation of the test base plate.

The invention is realized by the following technical scheme:

an LRM module air-cooled universal test case comprises a case body, a connecting plate and a universal test module for testing the function of the LRM module, wherein an FMC connector, an LRM connector and a mixed power socket for supplying power to the LRM module are arranged on the connecting plate;

the universal test module comprises a shell and a test circuit board, the test circuit board is arranged inside the shell, an FMC interface matched with the FMC connector is arranged outside the shell, and the connecting board and the universal test module are connected through the FMC connector and the FMC interface;

the inner wall of box is provided with the support bar, the connecting plate with general test module is fixed in on the support bar.

In the scheme, the printed board of the test base board is changed into a simple mode that the PCBA board is connected with the universal test module, the test function to be realized on the test base board is transferred to the universal test module through the FMC connector, and when the LRM module is tested, except that a radio frequency cable is directly led out from a radio frequency cavity of a base of the LRM connector in the radio frequency test, other test functions are designed on the universal test module. According to different functions of the LRM module, different universal test modules can be used, so that all test functions are not required to be designed on the test base plate, and the problems of high design cost, prolonged design period, large size of the test base plate and poor heat dissipation of the test base plate are solved.

Meanwhile, in the scheme, the LRM module is not directly connected with the universal test module but is indirectly connected with the universal test module through the connecting board, and as long as the LRM connectors on the connecting board are arranged enough, a plurality of LRM modules can be tested at the same time, so that the test efficiency is greatly improved.

In addition, in the scheme, the test functions on the test base plate are dispersed to all the universal test modules, different function tests can be simultaneously carried out on different LRM modules, and meanwhile, because all the test function modules are mutually separated, electromagnetic interference can not be caused, and the test accuracy is improved.

Further, a fan is arranged outside the universal test module. The fan is used for radiating the universal test module, so that the problem caused by radiation can be avoided when the universal test module is subjected to high-temperature test along with the box body and the LRM module.

Further, the box door is further included, and the box door is detachably connected with the box body. When different LRM modules need to be tested with different functions, the LRM modules are convenient to replace.

Furthermore, the bottom of the box door is hinged with the bottom of the box body, and the top of the box door is fixedly connected with the top of the box body.

Furthermore, a debugging port and a debugging window are arranged on the box door, and the debugging window slides up and down along the debugging port. The debugging port adopts the design of the sliding sheet trial-opening window, so that a module debugging cable can be led out through the debugging port when the case is in a high-temperature test chamber, and the contact surface between the inside of the case and the outside can be small, thereby ensuring that the wind pressure of the case is not influenced by the external environment.

Furthermore, a heat radiation fan is further arranged on the box body. Used for radiating the box body so as to cool the working environment in the box body.

Furthermore, an exhaust fan is further arranged on the box body, and the exhaust fan and the radiating fan are arranged in an opposite mode. One side air inlet of the box body draws air, circulation of air inside the box body is accelerated, and the heat dissipation effect is better.

Further, a handle is arranged on the outer side of the box body. The box body is convenient to carry.

Further, a waist-shaped hole for vibration fixation is formed in the bottom of the box body. The waist-shaped hole is used for fixing the box body during the vibration test.

Further, the outside of box is provided with the pilot lamp. For detecting a power-up condition of the LRM module.

Compared with the prior art, the invention has the following advantages and beneficial effects:

1. the printed board of the test bottom board is changed into a simple form that the PCBA board is connected with the universal test module, so that the problems of high design cost, long design period, large size of the test bottom board and poor heat dissipation are solved;

2. a plurality of LRM modules can be tested at the same time, so that the testing efficiency is greatly improved;

3. the test function modules are mutually separated, so that electromagnetic interference can not be caused, and the test accuracy is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic structural view of a connecting plate according to the present invention;

FIG. 2 is a schematic diagram of the connection relationship between the connection board and the universal test module according to the present invention;

FIG. 3 is a schematic front view of the case of the present invention;

FIG. 4 is a side schematic view of the case of the present invention;

reference numbers and corresponding part names in the drawings:

1. a box body; 2. a connecting plate; 3. a general test module; 4. an FMC connector; 5. an LRM connector; 6. a mixed power socket; 7. an FMC interface; 8. a fan; 9. a box door; 10. debugging a window; 11. a handle; 12. an indicator light; 13. a heat dissipation fan.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

Examples

As shown in the figures 1-4 of the drawings,

a universal LRM module air-cooled test case comprises a case body 1 with the size of 370.6mm (L) x 317.1mm (W) x 211mm (H), a connecting plate 2 and a universal test module 3 for testing the functions of the LRM module, wherein 2

FMC connectors

4, 4 LRM connectors 5 and a mixed power socket 6 for supplying power to the LRM module are arranged on the connecting plate 2. The universal test module 3 comprises a shell and a test circuit board, wherein the test circuit board is arranged inside the shell, an FMC interface 7 matched with the FMC connector 4 is arranged outside the shell, and the connecting board 2 and the universal test module 3 are connected through the FMC connector 4 and the FMC interface 7.

The box body 1 comprises four closed surfaces and two opening surfaces, wherein the two opening surfaces of the box body 1 are oppositely arranged, one opening surface is provided with a box door 9, and the other opening surface is provided with a cover plate. In this embodiment, the middle part of chamber door 9 is provided with the debugging mouth, and the debugging mouth adopts the design of gleitbretter trial-open window for quick-witted case can draw forth module debugging cable through the debugging mouth when high temperature test case, can make quick-witted incasement portion again little with outside contact surface, does not receive external environment's influence with the wind pressure of guaranteeing quick-witted case. The bottom of chamber door 9 and the bottom of box 1 adopt hinge connection, and the screw has all been seted up at the top of chamber door 9 and the top of box 1, and when chamber door 9 and box 1 closed, the two utilized the nut fixed. The contact position of the cover plate and the box body 1 is also provided with a screw hole, and when the cover plate and the box body 1 are closed, the cover plate and the box body are fixed by nuts.

In this embodiment, the inner wall of the box 1 is further provided with a support strip. Wherein, the support bar, all seted up phi 4.5 mm's fixed orifices on general test template and the connecting plate 2, and the position of fixed orifices on the support bar is corresponding with the position of fixed orifices on general test template and the connecting plate 2, after connecting plate 2 and general test module 3 pass through FMC connector 4 and FMC interface 7 and connect, place connecting plate 2 and general test module 3 that will connect on the support bar, reuse M4 pan head combination screw fixes connecting plate 2 and general test module 3 on the support bar, with the cooperation tolerance of guaranteeing FMC connector 4, fix the apron on box 1 again afterwards.

When the LRM module is tested, the LRM module to be tested is placed in the box body 1, connected with the LRM connector 5 on the connecting board 2 and also connected with the mixed power socket 6, and the box door 9 is covered so that the test can be started.

In the scheme, the printed board of the test base plate is changed into a simple mode that the PCBA board is connected with the universal test module 3, the test function to be realized on the test base plate is transferred to the universal test module 3 through the FMC connector 4, and when the LRM module is tested, except that the radio frequency test directly leads out a radio frequency cable from a radio frequency cavity of a base of the LRM connector 5, other test functions are designed on the universal test module 3. According to the different functions of the LRM module, different universal test modules 3 can be used, so that all test functions are not required to be designed on the test base plate, and the problems of high design cost, prolonged design period, large size of the test base plate and poor heat dissipation of the test base plate are solved.

Meanwhile, in the scheme, the LRM module is not directly connected with the universal test module 3 but is indirectly connected with the universal test module 3 through the connecting board 2, and as long as the LRM connectors 5 on the connecting board 2 are set to be enough, a plurality of LRM modules can be tested at the same time, so that the test efficiency is greatly improved.

In addition, in the scheme, the test functions on the test base plate are dispersed to the universal test modules 3, different function tests can be simultaneously carried out on different LRM modules, and meanwhile, because the test function modules are separated from each other, electromagnetic interference can not be caused, and the test accuracy is improved.

In addition, in the present embodiment, a fan 8 is further provided outside the universal test module 3. The fan 8 is used for radiating the universal test module 3 so as to ensure that the universal test module 3 cannot cause problems due to heat radiation when performing high-temperature tests along with the box body 1 and the LRM module.

In another embodiment, the ventilation opening is formed in the left side of the box body 1, the cooling fan 13 is installed, the air suction opening is formed in the right side of the box body 1, the air suction fan is installed, air can be sucked from one side of the box body 1 while air is sucked, the circulation of air inside the box body 1 can be accelerated, and the heat dissipation effect inside the box body 1 is better.

The left side and the right side of the top of the box body 1 are both provided with handles 11. The box body 1 is convenient for workers to carry. The bottom of the box body 1 is also provided with a waist-shaped hole for vibration fixation. The waist-shaped hole is used for fixing the box body 1 during the vibration test. An indicator light 12 is arranged on the outer side of the box body 1. For detecting a power-up condition of the LRM module.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The air-cooled universal test case for the LRM module is characterized by comprising a case body (1), a connecting board (2) and a universal test module (3) for testing the function of the LRM module, wherein an FMC connector (4), an LRM connector (5) and a mixed power socket (6) for supplying power to the LRM module are arranged on the connecting board (2);

the universal test module (3) comprises a shell and a test circuit board, the test circuit board is arranged inside the shell, an FMC interface (7) matched with the FMC connector (4) is arranged outside the shell, and the connecting board (2) and the universal test module (3) are connected through the FMC connector (4) and the FMC interface (7);

the inner wall of the box body (1) is provided with a supporting strip, and the connecting plate (2) and the universal test module (3) are fixed on the supporting strip.

2. An LRM module air-cooled universal test chassis according to claim 1, characterized in that the universal test module (3) is externally provided with a fan (8).

3. An LRM module air-cooled universal test chassis according to claim 1 or 2, further comprising a door (9), wherein the door (9) is detachably connected to the box body (1).

4. An LRM module air-cooled universal test cabinet according to claim 3, characterized in that the bottom of the box door (9) is hinged with the bottom of the box body (1), and the top of the box door (9) is fixedly connected with the top of the box body (1).

5. The universal LRM module air-cooled tester case as claimed in claim 4, wherein said box door (9) is provided with a debugging port and a debugging window (10), and said debugging window (10) slides up and down along said debugging port.

6. An LRM module air-cooled universal test case as claimed in any of claims 1, 2, 4 or 5, wherein the case (1) is further provided with a heat dissipation fan (13).

7. The universal LRM module air-cooled test case as claimed in claim 6, wherein an induced draft fan is further disposed on the case body (1), and the induced draft fan and the heat dissipation fan (13) are disposed in an opposite direction.

8. An LRM module air-cooled universal test case according to claim 7, characterized in that the outside of the case (1) is provided with a handle (11).

9. An LRM module air-cooled universal test case as claimed in claim 8, characterized in that the bottom of the case (1) is provided with a waist-shaped hole for vibration fixation.

10. An LRM module air-cooled universal test chassis according to claim 9, characterized in that an indicator light (12) is arranged on the outside of the box body (1).