Optical communication tunable filter with compact structure

Abstract

The invention discloses a tunable filter with a compact structure for optical communication, and relates to the technical field of filters. The optical communication tunable filter with the compact structure comprises a lower shell, an upper shell and a first screw, a first filter module, a second filter module, a cooling fan, a self-detection device and a relay are arranged in the lower shell, and a quick replacement mechanism is fixedly connected to the bottom of the inner surface of the lower shell. The outer surface of the first filter module and the outer surface of the second filter module are each provided with an input connector, the outer surface of the relay is provided with an output connector, and the outer surface of the lower shell and the outer surface of the upper shell are provided with an air outlet hole and an air inlet hole, so that the device has the redundancy design of the double filter modules; the other filter module can automatically take over work, continuous operation of the system is guaranteed, meanwhile, a quick replacement mechanism is designed, a user can conveniently replace a fault module, and the downtime of the system is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of filters, and in particular to a compact tunable filter for optical communication. Background Art

[0002] With the rapid development of optical communication technology, optical fiber communication systems play an increasingly important role in modern communication networks, especially the application of wavelength division multiplexing (WDM) technology, which enables a single optical fiber to simultaneously transmit multiple optical signals of different wavelengths, greatly improving the capacity and efficiency of communication systems. In this multi-wavelength parallel transmission environment, the selection and tuning of optical signals have become one of the key technologies. Tunable filters have become one of the core components in optical fiber communication systems because of their ability to dynamically adjust the transmission and reception wavelengths.

[0003] Most of the existing tunable filters are designed with a single working module. When a filter fails, the entire communication system may need to be shut down for maintenance, which poses a threat to the stability and reliability of the system. The replacement and maintenance process is complicated and time-consuming, which can easily cause long-term system shutdown and affect the continuity of communication services. Summary of the invention

[0004] In view of the shortcomings of the existing problems, the present invention provides a compact tunable filter for optical communication to solve the existing problems mentioned in the above background technology.

[0005] To solve the above problems, the present invention is implemented through the following technical solutions: A compact tunable filter for optical communication, comprising a lower shell, an upper shell and a first screw, wherein a first filter module, a second filter module, a cooling fan, a self-detection device and a relay are arranged inside the lower shell, a quick replacement mechanism is fixedly connected to the bottom of the inner surface of the lower shell, the outer surfaces of the first filter module and the second filter module are both provided with input connectors, the outer surface of the relay is provided with an output connector, the outer surfaces of the lower shell and the upper shell are provided with air outlets and air inlet holes, the outer surface of the lower shell is provided with a protective mechanism, the outer surface of the upper shell is fixedly connected with a shielding cover, the self-detection device comprises a smart meter and a second screw, the upper surface of the smart meter is provided with a display screen, a first indicator light and a second indicator light, the quick replacement mechanism comprises a fixing rod, a limit block is sleeved on the outer surface of the fixing rod, a connecting sleeve is fixedly connected to the upper surface of the limit block, a fixing plate is fixedly connected to the top of the fixing rod, a spring is fixedly connected to the upper surface of the fixing plate, a slide groove is provided on the inner surface of the connecting sleeve, and a connecting rotating plate is rotatably connected inside the slide groove.

[0006] Preferably, the lower shell is connected to the upper shell by a first screw, and a card slot is provided on the top of the upper shell, and the inner surface of the card slot is adapted to the outer surface of the smart meter.

[0007] Preferably, the air outlet is arranged opposite to the cooling fan, the air inlet is arranged on a side of the lower shell away from the air outlet, the shielding cover is arranged on the outside of the air outlet, and the protective mechanism is arranged on the outside of the air inlet.

[0008] Preferably, the smart meter is electrically connected to the first filter module, the second filter module and the relay.

[0009] Preferably, a mounting bracket is fixedly connected to the lower surface of the smart meter, and the mounting bracket is connected to the lower shell through a second screw.

[0010] Preferably, the bottom end of the fixing rod is fixedly connected to the bottom of the inner surface of the lower shell, the outer surface of the fixing rod is sleeved on the bottom of the connecting sleeve, and the outer surface of the fixing plate is extruded and fitted with the inner surface of the connecting sleeve.

[0011] Preferably, one end of the spring away from the fixed plate is fixedly connected to the lower surface of the connecting rotating plate, and the connecting rotating plate is arranged just above the fixed plate.

[0012] Preferably, the protection mechanism includes a protection cover shell and a third screw, the outer surface of the protection cover shell is fixedly connected with a mounting plate, the mounting plates are symmetrically arranged on both sides of the protection cover shell, and the mounting plates are connected to the lower shell body through the third screw.

[0013] Preferably, ventilation holes are provided on the outer surface of the protective cover shell, a first baffle is provided on the top of the inner surface of the protective cover shell, a second baffle is provided on the bottom of the inner surface of the protective cover shell, the first baffle and the second baffle are arranged alternately, and a sponge strip is provided at the interval between the first baffle and the second baffle.

[0014] The present invention provides a compact tunable filter for optical communication, which has the following beneficial effects:

[0015] 1. The compact structure of the tunable filter for optical communication has a redundant design of dual filter modules through the cooperation between the first filter module, the second filter module, the self-detection device and the relay. When one filter module fails, the other filter module can automatically take over the work to ensure the continuous operation of the system. There is no need to shut down the entire communication system for maintenance, thereby ensuring the continuity of communication services.

[0016] 2. The compact tunable filter for optical communication has a quick replacement mechanism. When installing or removing the first filter module or the second filter module, it is only necessary to rotate the connecting sleeve 180 degrees. The operation is simple and convenient, and the function of quickly replacing a faulty filter module is realized. The user can easily replace the faulty module and reduce system downtime.

[0017] 3. The compactly structured tunable filter for optical communication can achieve air circulation inside the filter through the coordination of the air inlet, air outlet, cooling fan, protective mechanism and shielding cover, and the coordination of the cooling fan with the air inlet and air outlet, so as to facilitate the discharge of heat generated by the operation of the filter from the air outlet. At the same time, the protective mechanism can prevent dust and moisture in the air from entering the filter from the air inlet as much as possible, and the shielding cover can also prevent dust in the air from entering the filter from the air outlet, thereby extending the service life of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 A second perspective structural schematic diagram of the present invention as a whole;

[0020] Figure 3 It is a schematic diagram of the overall split structure of the present invention;

[0021] Figure 4 It is a schematic diagram of the internal structure of the lower housing of the present invention;

[0022] Figure 5 It is a structural schematic diagram of the self-detection device of the present invention;

[0023] Figure 6 It is a structural schematic diagram of the quick-change mechanism of the present invention;

[0024] Figure 7 It is a structural schematic diagram of the protection mechanism of the present invention.

[0025] In the figure: 1. lower shell; 2. upper shell; 3. first screw; 4. first filter module; 5. second filter module; 6. cooling fan; 7. self-detection device; 71. smart meter; 72. mounting bracket; 73. second screw; 74. display screen; 75. first indicator light; 76. second indicator light; 8. relay; 9. quick replacement mechanism; 91. fixing rod; 92. limit block; 93. connecting sleeve; 94. fixing plate; 95. slide groove; 96. connecting rotating plate; 97. spring; 10. input connector; 11. output connector; 12. air outlet; 13. air inlet; 14. protective mechanism; 141. protective cover shell; 142. mounting plate; 143. third screw; 144. ventilation hole; 145. first baffle plate; 146. second baffle plate; 147. sponge strip; 15. card slot; 16. shielding cover. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0027] Example 1

[0028] like Figure 1-Figure 7 As shown, the present invention provides a technical solution: a compact tunable filter for optical communication, comprising a lower shell 1, an upper shell 2 and a first screw 3, the interior of the lower shell 1 is provided with a first filter module 4, a second filter module 5, a cooling fan 6, a self-detection device 7 and a relay 8, the bottom of the inner surface of the lower shell 1 is fixedly connected with a quick replacement mechanism 9, the outer surfaces of the first filter module 4 and the second filter module 5 are both provided with an input connector 10, the outer surface of the relay 8 is provided with an output connector 11, the outer surfaces of the lower shell 1 and the upper shell 2 are provided with an air outlet 12 and an air inlet 13, and the outer surface of the lower shell 1 is provided with an anti- The protective mechanism 14, the outer surface of the upper shell 2 is fixedly connected with a shielding cover 16, the self-detection device 7 includes a smart meter 71 and a second screw 73, the upper surface of the smart meter 71 is provided with a display screen 74, a first indicator light 75 and a second indicator light 76, the quick replacement mechanism 9 includes a fixed rod 91, the outer surface of the fixed rod 91 is sleeved with a limit block 92, the upper surface of the limit block 92 is fixedly connected with a connecting sleeve 93, the top of the fixed rod 91 is fixedly connected with a fixing plate 94, the upper surface of the fixing plate 94 is fixedly connected with a spring 97, the inner surface of the connecting sleeve 93 is provided with a slide groove 95, and the inner surface of the slide groove 95 is rotatably connected with a connecting rotating plate 96.

[0029] The lower housing 1 is connected to the upper housing 2 by means of a first screw 3 . A card slot 15 is provided on the top of the upper housing 2 . The inner surface of the card slot 15 is matched with the outer surface of the smart meter 71 .

[0030] The air outlet 12 is arranged opposite to the cooling fan 6 , the air inlet 13 is arranged on a side of the lower housing 1 away from the air outlet 12 , the shielding cover 16 is arranged outside the air outlet 12 , and the protection mechanism 14 is arranged outside the air inlet 13 .

[0031] The smart meter 71 is electrically connected to the first filter module 4 , the second filter module 5 and the relay 8 .

[0032] A mounting bracket 72 is fixedly connected to the lower surface of the smart meter 71 , and the mounting bracket 72 is connected to the lower housing 1 via a second screw 73 .

[0033] The bottom end of the fixing rod 91 is fixedly connected to the bottom of the inner surface of the lower shell 1 , the outer surface of the fixing rod 91 is sleeved on the bottom of the connecting sleeve 93 , and the outer surface of the fixing plate 94 is squeezed and adapted to the inner surface of the connecting sleeve 93 .

[0034] One end of the spring 97 away from the fixed plate 94 is fixedly connected to the lower surface of the connecting rotating plate 96 , and the connecting rotating plate 96 is arranged just above the fixed plate 94 .

[0035] The protection mechanism 14 includes a protection cover shell 141 and a third screw 143 . The outer surface of the protection cover shell 141 is fixedly connected with a mounting plate 142 . The mounting plates 142 are symmetrically arranged on both sides of the protection cover shell 141 . The mounting plates 142 are connected to the lower shell 1 through the third screw 143 .

[0036] The outer surface of the protective cover shell 141 is provided with ventilation holes 144, the top of the inner surface of the protective cover shell 141 is provided with a first baffle 145, the bottom of the inner surface of the protective cover shell 141 is provided with a second baffle 146, the first baffle 145 and the second baffle 146 are arranged alternately, and a sponge strip 147 is arranged at the interval between the first baffle 145 and the second baffle 146.

[0037] When in use, the first filter module 4 is normally connected to the system during use, while the second filter module 5 is used as a backup module. The smart meter 71 of the self-detection device 7 is connected to the first filter module 4 and the second filter module 5 through wires, and is used to monitor the circuit conditions of the first filter module 4 and the second filter module 5 in real time. The relay 8 is suitable for an electrical control device that automatically adjusts and converts the circuit. If the first filter module 4 is electrically connected to the system, when the smart meter 71 detects that the first filter module 4 fails, the smart meter 71 immediately transmits a signal to the relay 8, and uses the relay 8 to automatically disconnect the first filter module 4 from the system, and connect the second filter module 5 to the system to ensure the normal operation of the system. At the same time, the first indicator light 75 lights up to prompt the user that the first filter module 4 has a fault. Similarly, if the second filter module 5 is electrically connected to the system, when the second filter module 5 fails, it can automatically switch to the first filter module 4 connecting to the system, and the second indicator light 76 lights up, so that the filter can always keep in operation.

[0038] When installing the first filter module 4 and the second filter module 5 through the quick replacement mechanism 9, first place the first filter module 4 and the second filter module 5 at the corresponding positions in the lower housing 1, then lift the connecting shell 93 upward and rotate it 180 degrees, the limit block 92 moves and rotates accordingly, the distance between the connecting rotating plate 96 and the fixing plate 94 increases, the spring 97 is stretched, so that the limit block 92 is located above the mounting seat of the first filter module 4 and the mounting seat of the second filter module 5, and the connecting shell 93 is released. Under the elastic action of the spring 97 and the gravity of the limit block 92, the limit block 92 is pressed on the upper surface of the mounting seat of the first filter module 4 and the mounting seat of the second filter module 5. At this time, the spring 97 is still in a stretched state, so that the connecting shell 93 is The connecting sleeve 93 and the limiting block 92 tend to move downward, so that the mounting seat of the first filter module 4 and the mounting seat of the second filter module 5 are pressed, and the quick replacement mechanism 9 on both sides of the first filter module 4 and the second filter module 5 repeats the above operation, so that the first filter module 4 and the second filter module 5 are firmly installed in the lower shell 1. When the first filter module 4 or the second filter module 5 fails and the power is cut off, the connecting sleeve 93 is rotated one hundred and eighty degrees in the opposite direction and released, so that the limiting block 92 leaves the mounting seat of the first filter module 4 or the mounting seat of the second filter module 5, thereby releasing the restriction on the first filter module 4 or the second filter module 5, so as to facilitate the removal of the first filter module 4 or the second filter module 5 for repair or replacement.

[0039] Through the cooling fan 6 and the protective mechanism 14, the cooling fan 6 is started to blow out the heat generated during the operation of the filter from the air outlet 12. At the same time, the cold air from the outside passes through the protective mechanism 14 and enters the inside of the filter from the air inlet 13. The cold air from the outside first enters the protective cover shell 141 from the ventilation hole 144, passes through the first baffle 145, the second baffle 146 and the sponge strip 147, and then enters from the air inlet 13. In this process, most of the dust and moisture in the air will be blocked by the first baffle 145, the second baffle 146 and the sponge strip 147, so as to prevent the dust and moisture in the air from entering the filter from the air inlet 13 as much as possible. The shielding cover 16 can also prevent the dust in the air from entering the filter from the air outlet 12, so as to extend the service life of the filter.

[0040] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A compact tunable filter for optical communication, comprising a lower housing (1), an upper housing (2) and a first screw (3), characterized in that: The interior of the lower shell (1) is provided with a first filter module (4), a second filter module (5), a cooling fan (6), a self-detection device (7) and a relay (8); the bottom of the inner surface of the lower shell (1) is fixedly connected to a quick-change mechanism (9); the outer surfaces of the first filter module (4) and the second filter module (5) are both provided with input connectors (10); the outer surface of the relay (8) is provided with an output connector (11); the outer surfaces of the lower shell (1) and the upper shell (2) are provided with air outlets (12) and air inlet holes (13); the outer surface of the lower shell (1) is provided with a protective mechanism (14); the outer surface of the upper shell (2) is fixedly connected to a shielding cover (16); The self-detection device (7) comprises an intelligent electric meter (71) and a second screw (73), the upper surface of the intelligent electric meter (71) is provided with a display screen (74), a first indicator light (75) and a second indicator light (76), the quick replacement mechanism (9) comprises a fixed rod (91), the outer surface of the fixed rod (91) is sleeved with a limit block (92), the upper surface of the limit block (92) is fixedly connected with a connecting sleeve (93), the top end of the fixed rod (91) is fixedly connected with a fixing plate (94), the upper surface of the fixing plate (94) is fixedly connected with a spring (97), the inner surface of the connecting sleeve (93) is provided with a slide groove (95), and the inside of the slide groove (95) is rotatably connected with a connecting rotating plate (96).

2. The compact tunable filter for optical communication according to claim 1, characterized in that: The lower housing (1) is connected to the upper housing (2) via a first screw (3); a card slot (15) is provided on the top of the upper housing (2); and the inner surface of the card slot (15) is adapted to the outer surface of the smart meter (71).

3. The compact tunable filter for optical communication according to claim 1, characterized in that: The air outlet (12) is arranged at a position opposite to the cooling fan (6), the air inlet (13) is arranged on a side of the lower shell (1) away from the air outlet (12), the shielding cover (16) is arranged on the outside of the air outlet (12), and the protective mechanism (14) is arranged on the outside of the air inlet (13).

4. The compact tunable filter for optical communication according to claim 1, characterized in that: The smart electric meter (71) is electrically connected to the first filter module (4), the second filter module (5) and the relay (8).

5. The compact tunable filter for optical communication according to claim 1, characterized in that: A mounting frame (72) is fixedly connected to the lower surface of the smart electric meter (71), and the mounting frame (72) is connected to the lower housing (1) via a second screw (73).

6. The compact tunable filter for optical communication according to claim 1, characterized in that: The bottom end of the fixing rod (91) is fixedly connected to the bottom of the inner surface of the lower shell (1), the outer surface of the fixing rod (91) is sleeved on the bottom of the connecting sleeve (93), and the outer surface of the fixing plate (94) is extruded and matched with the inner surface of the connecting sleeve (93).

7. The compact tunable filter for optical communication according to claim 1, characterized in that: One end of the spring (97) away from the fixed plate (94) is fixedly connected to the lower surface of the connecting rotating plate (96), and the connecting rotating plate (96) is arranged just above the fixed plate (94).

8. The compact tunable filter for optical communication according to claim 1, characterized in that: The protection mechanism (14) comprises a protection cover shell (141) and a third screw (143); a mounting plate (142) is fixedly connected to the outer surface of the protection cover shell (141); the mounting plates (142) are symmetrically arranged on both sides of the protection cover shell (141); and the mounting plates (142) are connected to the lower shell (1) via the third screw (143).

9. The compact tunable filter for optical communication according to claim 1, characterized in that: The outer surface of the protective cover shell (141) is provided with a ventilation hole (144), the top of the inner surface of the protective cover shell (141) is provided with a first baffle (145), and the bottom of the inner surface of the protective cover shell (141) is provided with a second baffle (146), the first baffle (145) and the second baffle (146) are arranged alternately, and a sponge strip (147) is arranged at the interval between the first baffle (145) and the second baffle (146).

Images