A field environment simulation device for testing the performance of optical terminal equipment

Abstract

The present application provides a field environment simulation device for testing the performance of an optical terminal, which includes a receiver, a transmitter, and a main body of the testing machine. Among them, the main body of the testing machine includes a box body and an adjustable testing part arranged inside the box body. The optical terminal to be tested is arranged inside the box body, and the adjustable testing part sprays water mist, sand and dust, or sprays water at different angles to the optical terminal to respectively simulate the optical terminal in a high humidity environment, a sandstorm weather, and a rainfall weather. The transmitter is arranged on one side outside the box body, and the output end of the transmitter is connected to the input end of the optical terminal through an optical fiber. The receiver is arranged on the other side outside the box body, and the input end of the receiver is connected to the output end of the optical terminal through an optical fiber. The field environment simulation device for testing the performance of an optical terminal provided by the present application realizes more accurate simulation of the real field environment to test the optical terminal, and improves the real reliability of the simulation effect.

Description

Technical Field

[0001] The present invention relates to the field of optical terminal testing devices, and particularly to a field environment simulation device for testing the performance of optical terminals. Background Art

[0002] An optical terminal is a device used in optical fiber communication. It can convert an electrical signal into an optical signal or convert an optical signal into an electrical signal. The performance of the optical terminal directly affects the quality and stability of optical fiber communication. Therefore, various tests need to be carried out on the optical terminal to ensure its normal operation under different environmental conditions.

[0003] Currently, some existing environment simulation devices usually apply water mist or sand and dust with a fixed direction and spray water to the optical terminal to simulate the working state of the optical terminal in a high-humidity environment, sandy weather, and rainy weather, in order to test its performance. Since the optical terminal used in the field is affected by water mist or sand and dust and rainfall from different directions and angles, however, the existing test devices cannot simulate the influence of the optical terminal being affected by water mist or sand and dust or rainfall from different angles. Therefore, the simulation effect of the existing environment simulation device is inaccurate and cannot truly simulate the field environment. Summary of the Invention

[0004] The purpose of the present invention is to provide a field environment simulation device for testing the performance of an optical terminal, so as to solve the technical problem that the traditional field environment simulation device cannot accurately simulate the real field environment, resulting in inaccurate simulation effects.

[0005] To solve the above problems, the present invention provides a field environment simulation device for testing the performance of an optical terminal. The field environment simulation device for testing the performance of an optical terminal includes:

[0006] A test machine main body, the test machine main body includes a box body and an adjustable test part arranged in the box body. The optical terminal to be tested is arranged in the box body, and the adjustable test part sprays water mist or sand and dust or spray water at different angles to the optical terminal to respectively simulate the optical terminal in a high-humidity environment, sandy weather, and rainy weather;

[0007] A transmitter, the transmitter is arranged on one side outside the box body, and the output end of the transmitter is connected to the input end of the optical terminal through an optical fiber;

[0008] A receiver, the receiver is arranged on the other side outside the box body, and the input end of the receiver is connected to the output end of the optical terminal through an optical fiber.

[0009] In one embodiment, the adjustable test part includes:

[0010] An arc-shaped rotating shaft, both ends of the arc-shaped rotating shaft are rotatably arranged on the box body through a bearing device, and a rack structure and a chute are arranged on the arc-shaped rotating shaft;

[0011] A first power unit, the first power unit is arranged on the box body, and the power output end of the first power unit is connected to the arc-shaped rotating shaft;

[0012] An adjustment platform, the adjustment platform is slidably arranged on the chute of the arc-shaped rotating shaft;

[0013] A second power unit, the second power unit is arranged on the adjustment platform, and a gear meshing with the rack structure is arranged at the power output end of the second power unit;

[0014] A water supply water pipe, the water supply water pipe is fixed on the adjustment platform, and a spray head is arranged at the end of the water supply water pipe;

[0015] A dust pipe, the dust pipe is fixed on the adjustment platform, and a dust spray head is arranged at the end of the dust pipe;

[0016] An air supply pipe, the air supply pipe is fixed on the adjustment platform, a water mist spray head is arranged at the end of the air supply pipe, and the air supply pipe is respectively connected to the water supply water pipe and the dust pipe; one-way valves are arranged between the air supply pipe and the water supply water pipe and between the air supply pipe and the dust pipe; the flow direction of the one-way valve between the air supply pipe and the water supply water pipe is from the water supply water pipe to the air supply pipe; the flow direction of the one-way valve between the air supply pipe and the dust pipe is from the air supply pipe to the dust pipe;

[0017] A first electromagnetic valve, a second electromagnetic valve, and a third electromagnetic valve, the first electromagnetic valve is arranged at the end of the water supply water pipe, the second electromagnetic valve is arranged at the end of the air supply pipe, and the third electromagnetic valve is arranged at the end of the dust pipe.

[0018] In one embodiment, the spray head, the dust spray head, and the water mist spray head are all lotus-shaped spray heads.

[0019] In one embodiment, the arc-shaped rotating shaft has a semi-circular ring structure, and the optical terminal is located at the center of the arc of the semi-circular ring structure of the arc-shaped rotating shaft.

[0020] In one embodiment, the adjustable test unit further includes a humidity sensor, the humidity sensor is fixed near the optical terminal, and the humidity sensor is electrically connected to the second electromagnetic valve.

[0021] In one embodiment, an anti-seismic test unit is further included, and the anti-seismic test unit includes:

[0022] An elastic member, one end of the elastic member is fixed inside the box;

[0023] A test platform, the test platform is fixed to the other end of the elastic member, a clamping structure is arranged on the test platform, and the optical terminal is fixed to the clamping structure of the test platform;

[0024] A third power unit, the third power unit is arranged inside the box, and the power output end of the third power unit acts on the test platform.

[0025] In one embodiment, a temperature control device is further included, the temperature control device is arranged inside the box, and the temperature control device is used to control the temperature inside the box.

[0026] In one embodiment, an electromagnetic interference instrument is further included, the electromagnetic interference instrument is arranged inside the box, and the electromagnetic interference instrument is used to emit electromagnetic interference signals to the optical terminal.

[0027] One or more of the above technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

[0028] The field environment simulation device for testing the performance of an optical terminal provided by the embodiments of the present invention, by setting a test machine main body, arranging the optical terminal to be tested inside the box, and arranging an adjustable test part inside the test machine main body, using the adjustable test part to spray water mist or sand and dust or sprinkle water on the optical terminal at different angles to respectively simulate the optical terminal in a high humidity environment, sandy weather and rainy weather, using a transmitter to be connected to the input end of the optical terminal through an optical fiber, and connecting the output end of the optical terminal to a receiver through an optical fiber, by comparing the signal received by the receiver with the signal sent by the transmitter in real time, the working state of the optical terminal (including communication quality and stability, etc.) can be detected in real time, and then a more accurate simulation of the real field environment can be realized to test the optical terminal and improve the real reliability of the simulation effect. Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0030] Figure 1 It is a schematic structural diagram of the field environment simulation device for testing the performance of an optical terminal provided by the embodiments of the present invention;

[0031] Figure 2 For Figure 1 A partial enlarged schematic diagram of part A in

[0032] Among them, each reference numeral is as follows:

[0033] 1. Main body of the testing machine; 2. Transmitter; 3. Receiver; 4. Optical terminal unit; 5. Optical fiber; 11. Box body; 12. Adjustable testing part; 13. Vibration-proof testing part; 14. Temperature control device; 121. Arc-shaped rotating shaft; 122. First power part; 123. Adjusting platform; 124. Second power part; 125. Water supply water pipe; 126. Dust pipe; 127. Air supply pipe; 128. First electromagnetic valve; 129. Second electromagnetic valve; 1210. Third electromagnetic valve; 1211. Rack structure; 1212. Slide groove; 1213. Check valve; 1214. Humidity sensor; 131. Elastic member; 132. Testing platform; 133. Third power part; 1241. Gear; 1251. Sprinkler head; 1261. Dust spray head; 1271. Water mist spray head. Detailed implementation manners

[0034] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation to the present invention.

[0035] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0036] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0037] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Please refer to Figures 1 to 2 , an outdoor environment simulation device for testing the performance of an optical terminal provided by an embodiment of the present application includes a receiver 3, a transmitter 2, and a test machine main body 1. Among them, the test machine main body 1 includes a box body 11 and an adjustable test part 12 arranged in the box body 11. The optical terminal 4 to be tested is arranged in the box body 11. The adjustable test part 12 sprays water mist or sand and dust or sprays water at the optical terminal 4 at different angles to respectively simulate the optical terminal 4 in a high humidity environment, a sandy weather, and a rainy weather; the transmitter 2 is arranged on one side outside the box body 11, and the output end of the transmitter 2 is connected to the input end of the optical terminal 4 through an optical fiber 5; the receiver 3 is arranged on the other side outside the box body 11, and the input end of the receiver 3 is connected to the output end of the optical terminal 4 through an optical fiber 5.

[0039] The outdoor environment simulation device for testing the performance of an optical terminal provided by this embodiment, by setting the test machine main body 1, arranging the optical terminal 4 to be tested in the box body 11, and arranging an adjustable test part 12 in the test machine main body 1, using the adjustable test part 12 to spray water mist or sand and dust or spray water at the optical terminal 4 at different angles to respectively simulate the optical terminal 4 in a high humidity environment, a sandy weather, and a rainy weather, using the transmitter 2 to be connected to the input end of the optical terminal 4 through an optical fiber 5, and connecting the output end of the optical terminal 4 to the receiver 3 through an optical fiber 5, by comparing the signal received by the receiver 3 with the signal sent by the transmitter 2 in real time, the working state of the optical terminal 4 (including communication quality and stability, etc.) can be detected in real time, and then a more accurate simulation of the outdoor real environment can be realized to test the optical terminal 4 (the output angle of the water mist or sand and dust or sprayed water can be changed through the adjustable test part 12 to more accurately conform to the outdoor environment), improving the real reliability of the simulation effect.

[0040] In one embodiment, the adjustable test unit 12 includes an arc-shaped rotating shaft 121, a first power unit 122, an adjustment platform 123, a second power unit 124, a water supply water pipe 125, a dust pipe 126, an air supply pipe 127, a first electromagnetic valve 128, a second electromagnetic valve 129, and a third electromagnetic valve 1210. Among them, both ends of the arc-shaped rotating shaft 121 are rotatably arranged on the box body 11 through bearing devices, and a rack structure 1211 and a chute 1212 are arranged on the arc-shaped rotating shaft 121; the first power unit 122 is arranged on the box body 11, and the power output end of the first power unit 122 is connected to the arc-shaped rotating shaft 121; the adjustment platform 123 is slidably arranged on the chute 1212 of the arc-shaped rotating shaft 121; the second power unit 124 is arranged on the adjustment platform 123, and a gear 1241 meshing with the rack structure 1211 is arranged at the power output end of the second power unit 124; the water supply water pipe 125 is fixed on the adjustment platform 123, and a spray head 1251 is arranged at the end of the water supply water pipe 125; the dust pipe 126 is fixed on the adjustment platform 123, and a dust spray head 1261 is arranged at the end of the dust pipe 126; the air supply pipe 127 is fixed on the adjustment platform 123, a water mist spray head 1271 is arranged at the end of the air supply pipe 127, and the air supply pipe 127 is respectively connected to the water supply water pipe 125 and the dust pipe 126; check valves 1213 are arranged between the air supply pipe 127 and the water supply water pipe 125 and between the air supply pipe 127 and the dust pipe 126; the flow direction of the check valve 1213 between the air supply pipe 127 and the water supply water pipe 125 is from the water supply water pipe 125 to the air supply pipe 127; the flow direction of the check valve 1213 between the air supply pipe 127 and the dust pipe 126 is from the air supply pipe 127 to the dust pipe 126; the first electromagnetic valve 128 is arranged at the end of the water supply water pipe 125, the second electromagnetic valve 129 is arranged at the end of the air supply pipe 127, and the third electromagnetic valve 1210 is arranged at the end of the dust pipe 126.

[0041] Optionally, the water supply water pipe 125, the dust pipe 126, and the air supply pipe 127 are all made of flexible hoses, and the water supply water pipe 125, the dust pipe 126, and the air supply pipe 127 all reserve a margin for easy movement in the box body 11 to cooperate with the adjustment platform 123 for angle direction adjustment.

[0042] Such as Figure 1As shown, when the first power unit 122 drives the arc-shaped rotating shaft 121 to rotate (the rotation angle of the arc-shaped rotating shaft 121 is 0 - 180°), the front-back tilt angle of the adjustment platform 123 located on the arc-shaped rotating shaft 121 will change accordingly. And by driving the gear 1241 to rotate through the second power unit 124, the adjustment platform 123 slides along the chute 1212, and then the left-right tilt angle of the adjustment platform 123 changes (the adjustable angle value is 5° - 175°). Therefore, by controlling the first power unit 122 and the second power unit 124, the front-back, left-right tilt angles of the adjustment platform 123 can be controlled, and then the spraying directions of the water supply pipe 125, the dust pipe 126, and the air supply pipe 127 located on the adjustment platform 123 will change accordingly.

[0043] As Figure 2 shown, when it is necessary to test the working state of the optical terminal 4 in a humid environment (such as swamps, lakes, etc.) (to test the moisture-proof and corrosion-resistant performance of the optical terminal 4), only need to close the first electromagnetic valve 128 and the third electromagnetic valve 1210, and open the second electromagnetic valve 129. Then, the water flow in the water supply pipe 125 flows leftward through the one-way valve 1213 into the air supply pipe 127, and under the impact of the high-speed air flow in the air supply pipe 127, it sprays out from the water mist nozzle 1271 at the end of the air supply pipe 127 to form water mist, thereby increasing the air humidity in the box body 11 to simulate the working state of the optical terminal 4 in a high-humidity environment. When it is necessary to test the working state of the optical terminal 4 in rainy days (to test the sealing and waterproof performance of the optical terminal 4), only need to close the second electromagnetic valve 129 and the third electromagnetic valve 1210, and open the first electromagnetic valve 128, so that the water flow in the water supply pipe 125 sprays out through the spray head 1251 at the end of the water supply pipe 125 and sprays onto the optical terminal 4, thereby simulating the sealing and waterproof performance of the optical terminal 4 in rainy days. When it is necessary to test the working state of the optical terminal 4 in a sandy environment (to test the dust-proof performance of the optical terminal 4), only need to close the first electromagnetic valve 128 and the second electromagnetic valve 129, open the third electromagnetic valve 1210, and cut off the water supply of the water supply pipe 125, so that the high-speed air flow in the air supply pipe 127 flows leftward through the one-way valve 1213 into the dust pipe 126, and blows the dust in the dust pipe 126 from the dust nozzle 1261 onto the optical terminal 4 to simulate a sandy environment, and then detect the working state of the optical terminal 4 in a sandy environment.

[0044] In one embodiment, the spray head 1251, the dust nozzle 1261, and the water mist nozzle 1271 are all lotus-shaped nozzles. By setting the spray head 1251, the dust nozzle 1261, and the water mist nozzle 1271 as lotus-shaped nozzles, the sprayed spray water / dust / water mist from the spray head 1251 / dust nozzle 1261 / water mist nozzle 1271 is more uniform, which is convenient for testing.

[0045] In one embodiment, the arc-shaped rotating shaft 121 has a semi-circular ring structure, and the optical terminal 4 is located at the center of the circle of the arc-shaped rotating shaft 121 of the semi-circular ring structure. By setting the arc-shaped rotating shaft 121 to a semi-circular ring structure and setting the optical terminal 4 at the center of the circle of the arc-shaped rotating shaft 121 of the semi-circular ring structure, it is only necessary to initially align the spraying directions of the spray head 1251, the dust spray head 1261, and the water mist spray head 1271 with the position where the optical terminal 4 is located. Subsequently, no matter how the angle of the arc-shaped rotating shaft 121 or the adjustment platform 123 is adjusted, the spraying directions of the spray head 1251, the dust spray head 1261, and the water mist spray head 1271 still remain directed towards the position where the optical terminal 4 is located, and the distance from the optical terminal 4 remains unchanged. Furthermore, other factors (the distance between the nozzle and the optical terminal 4 and whether the nozzle is directly facing the optical terminal 4) are excluded to the greatest extent, improving the accuracy and reliability of the test.

[0046] In one embodiment, the adjustable test unit 12 further includes a humidity sensor 1214. The humidity sensor 1214 is fixed near the optical terminal 4, and the humidity sensor 1214 is electrically connected to the second electromagnetic valve 129. By setting the humidity sensor 1214 near the optical terminal 4, the humidity sensor 1214 is used to monitor the humidity environment where the optical terminal 4 is located in real time, and the opening and closing of the second electromagnetic valve 129 are controlled according to the monitored humidity value. Furthermore, when the humidity sensor 1214 detects that the humidity environment where the optical terminal 4 is located is the target test environment humidity value, the humidity sensor 1214 controls the second electromagnetic valve 129 to close, so that the water mist spray head 1271 stops spraying water mist into the box body 11, and the humidity environment where the optical terminal 4 is located is maintained at the test environment humidity value.

[0047] As Figure 1As shown, in order to test the seismic performance and structural strength of the optical terminal 4, in one embodiment, an anti-seismic test unit 13 is further included. The anti-seismic test unit 13 includes a third power unit 133, a test platform 132, and an elastic member 131. One end of the elastic member 131 is fixed inside the box 11; the test platform 132 is fixed to the other end of the elastic member 131. A clamping structure is provided on the test platform 132, and the optical terminal 4 is fixed to the clamping structure of the test platform 132; the third power unit 133 (specifically, it can be a hydraulic cylinder or a pneumatic cylinder) is arranged inside the box 11, and the power output end of the third power unit 133 acts on the test platform 132. When conducting the test, first fix the optical terminal 4 to the clamping structure of the test platform 132, and then start the third power unit 133, so that the telescopic end of the third power unit 133 extends until the test platform 132 is lifted upward by a certain height, and then quickly retract the telescopic end of the third power unit 133, so that the test platform 132 and the optical terminal 4 thereon descend and compress the elastic member 131 (spring or elastic sheet). The compression of the elastic member 131 causes its elastic force to increase. When the test platform 132 descends to the limit position, it will rebound under the action of the elastic force of the elastic member 131, thereby causing the test platform 132 and the optical terminal 4 to move up and down repeatedly, thereby simulating the seismic performance and structural strength of the optical terminal 4 during vibration (including the connection strength between the optical fiber 5 and the input and output interfaces of the optical terminal 4).

[0048] In order to test the working state of the optical terminal 4 in high temperature / low temperature environments, in one embodiment, a temperature control device 14 (specifically, it can include a heating unit, a refrigeration unit, and a temperature measurement unit) is further included. The temperature control device 14 is arranged inside the box 11, and the temperature control device 14 is used to control the temperature inside the box 11. By setting the temperature control device 14 and using the temperature control device 14 to control the temperature inside the box 11, the heat dissipation performance of the optical terminal 4 in high temperature environments and the cold resistance performance in low temperature environments can be simulated.

[0049] In one embodiment, an electromagnetic interference instrument is further included. The electromagnetic interference instrument is arranged inside the box 11, and the electromagnetic interference instrument is used to emit electromagnetic interference signals to the optical terminal 4. The electromagnetic interference signals emitted by the electromagnetic interference instrument can be used to simulate the anti-interference performance of the optical terminal 4 under different electromagnetic interference environments.

[0050] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A field environment simulation device for testing the performance of an optical terminal, characterized in that The field environment simulation device for testing the performance of an optical terminal includes: A test machine main body, which includes a box body and an adjustable test part arranged in the box body. The optical terminal to be tested is arranged in the box body. The adjustable test part sprays water mist, sand dust or sprays water at different angles to the optical terminal to respectively simulate the optical terminal in a high humidity environment, sandy weather and rainy weather; A transmitter, which is arranged on one side outside the box body. The output end of the transmitter is connected to the input end of the optical terminal through an optical fiber; A receiver, which is arranged on the other side outside the box body. The input end of the receiver is connected to the output end of the optical terminal through an optical fiber; The adjustable test part includes: An arc-shaped rotating shaft, the two ends of which are rotatably arranged on the box body through bearing devices. A rack structure and a chute are arranged on the arc-shaped rotating shaft; A first power part, which is arranged on the box body, and the power output end of the first power part is connected to the arc-shaped rotating shaft; An adjustment platform, which is slidably arranged on the chute of the arc-shaped rotating shaft; A second power part, which is arranged on the adjustment platform. A gear meshing with the rack structure is arranged at the power output end of the second power part; A water supply water pipe, which is fixed on the adjustment platform, and a spray head is arranged at the end of the water supply water pipe; A dust pipe, which is fixed on the adjustment platform, and a dust spray head is arranged at the end of the dust pipe; An air supply pipe, which is fixed on the adjustment platform, and a water mist spray head is arranged at the end of the air supply pipe. The air supply pipe is respectively connected to the water supply water pipe and the dust pipe; One-way valves are arranged between the air supply pipe and the water supply water pipe and between the air supply pipe and the dust pipe; The flow direction of the one-way valve between the air supply pipe and the water supply water pipe is from the water supply water pipe to the air supply pipe; The flow direction of the one-way valve between the air supply pipe and the dust pipe is from the air supply pipe to the dust pipe; A first electromagnetic valve, a second electromagnetic valve and a third electromagnetic valve. The first electromagnetic valve is arranged at the end of the water supply water pipe, the second electromagnetic valve is arranged at the end of the air supply pipe, and the third electromagnetic valve is arranged at the end of the dust pipe.

2. The field environment simulation device for testing the performance of an optical terminal according to claim 1, characterized in that: The spray head, the dust spray head and the water mist spray head are all lotus-shaped spray heads.

3. The field environment simulation device for testing the performance of an optical terminal according to claim 1, characterized in that: The arc-shaped rotating shaft has a semi-circular ring structure, and the optical terminal is located at the center of the arc of the semi-circular ring structure of the arc-shaped rotating shaft.

4. The field environment simulation device for testing the performance of an optical terminal according to claim 1, characterized in that: The adjustable test part further includes a humidity sensor, which is fixed near the optical terminal, and the humidity sensor is electrically connected to the second electromagnetic valve.

5. The field environment simulation device for testing the performance of an optical terminal according to claim 1, wherein It further includes a seismic test unit, and the seismic test unit includes: An elastic member, one end of the elastic member is fixed inside the box; A test platform, the test platform is fixed to the other end of the elastic member, a clamping structure is arranged on the test platform, and the optical terminal is fixed to the clamping structure of the test platform; A third power unit, the third power unit is arranged inside the box, and the power output end of the third power unit acts on the test platform.

6. The field environment simulation device for testing the performance of an optical terminal according to claim 1, wherein: It further includes a temperature control device, the temperature control device is arranged inside the box, and the temperature control device is used to control the temperature inside the box.

7. The field environment simulation device for testing the performance of an optical terminal according to claim 1, wherein: It further includes an electromagnetic interference instrument, the electromagnetic interference instrument is arranged inside the box, and the electromagnetic interference instrument is used to emit electromagnetic interference signals to the optical terminal.

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