CN112396820A - Telecommunication acquisition data switching device for plastic optical fiber capable of receiving three signals - Google Patents
Telecommunication acquisition data switching device for plastic optical fiber capable of receiving three signals Download PDFInfo
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- CN112396820A CN112396820A CN202011264769.6A CN202011264769A CN112396820A CN 112396820 A CN112396820 A CN 112396820A CN 202011264769 A CN202011264769 A CN 202011264769A CN 112396820 A CN112396820 A CN 112396820A
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- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
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- G08C23/06—Non-electrical signal transmission systems, e.g. optical systems through light guides, e.g. optical fibres
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Abstract
The invention discloses a telecommunication acquisition data switching device for plastic optical fibers capable of receiving three signals, which comprises a switching shell and a local communication module, wherein the local communication module comprises an optical signal transceiving module, a main control module electrically connected with the optical signal transceiving module and a power supply module for connecting the optical signal transceiving module and the main control module; and the middle transmission module comprises a debugging module, a plastic optical fiber transceiving module electrically connected with the mode adjusting module and an indicator lamp arranged on the power supply module, wherein the debugging module is a serial port debugging functional module, and is used for integrating a local communication module, a DEBUG debugging module 407, a power supply module and the indicator lamp into a whole, and the master control module 4002 is used for realizing a plastic optical fiber local communication network multi-ring network structure module, better adapting to various complex field environments and application scenes of a plastic optical fiber local acquisition system and improving the compatibility and the adaptability of the plastic optical fiber acquisition system.
Description
Technical Field
The invention relates to the technical field of user electricity consumption information acquisition devices, in particular to a telecommunication acquisition data switching device for plastic optical fibers capable of receiving three signals.
Background
At present, in a plastic optical fiber user electricity consumption information acquisition system, a concentrator local optical fiber communication module performs data interaction with a plastic optical fiber collector through a plastic optical fiber, but the plastic optical fiber local communication structure and the plastic optical fiber distance between two nodes are limited, so that the concentrator local optical fiber communication module cannot be applied to various complex field distribution area environments.
The plastic optical fiber local communication structure adopts a three-layer structure, wherein the first layer is a concentrator plastic optical fiber local communication module; the second layer is a plastic optical fiber collector; the third layer is a user electric energy meter. Wherein the connection mode of the first layer and the second layer is as follows: the concentrator plastic optical fiber local communication module is connected with the plastic optical fiber collector through the plastic optical fiber to form a closed loop structure. The connection mode of the second layer and the third layer is as follows: the plastic optical fiber collector is connected with the user electric energy meter through the plastic optical fiber to form a closed loop structure, or the plastic optical fiber collector is connected with the user electric energy meter through RS-485 to form an open loop structure. The concentrator and a main ring communication network of the plastic optical fiber collector, and the plastic optical fiber collector and a secondary ring network or a chain network of the user electric energy meter jointly form a plastic optical fiber local communication network.
The plastic optical fiber local communication network connects all the plastic optical fiber collectors in series in the platform area, but due to the complex field environment and the limit of the distance between the plastic optical fiber nodes and the nodes, the closed loop of the local network is very difficult to complete in some occasions, and when the plastic optical fiber collection scheme of the platform area is designed, all the point position collection devices cannot be connected into the main loop communication network, so that the plastic optical fiber local communication network has great limitation in the field application process.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The invention is provided in view of the problems of the prior telecommunication acquisition data switching device for plastic optical fiber with one transmission and three receptions.
Therefore, the invention aims to provide a telecommunication acquisition data switching device for plastic optical fibers for receiving and transmitting three signals.
In order to solve the technical problems, the invention provides the following technical scheme: a telecommunication acquisition data switching device for plastic optical fibers capable of receiving and transmitting three signals comprises a switching shell, a local communication module and a power supply module, wherein the local communication module comprises an optical signal transceiving module, a main control module electrically connected with the optical signal transceiving module and the power supply module for connecting the optical signal transceiving module and the main control module; and the intermediate transmission module comprises a debugging module, a plastic optical fiber transceiving module electrically connected with the mode adjusting module and an indicator lamp arranged on the power supply module, and the debugging module is a serial port debugging functional module.
As a preferable scheme of the telecommunication acquisition data switching device for the plastic optical fiber for one receiving and three sending, the invention comprises: the main control module comprises a main control chip and a control circuit matched with the main control chip.
As a preferable scheme of the telecommunication acquisition data switching device for the plastic optical fiber for one receiving and three sending, the invention comprises: the plastic optical fiber transceiving module comprises a first transceiving module, a second transceiving module, a third transceiving module and a fourth transceiving module which are electrically connected with the main control chip.
As a preferable scheme of the telecommunication acquisition data switching device for the plastic optical fiber for one receiving and three sending, the invention comprises: the power supply module comprises 220V-ACDC modules and DC-DC modules.
As a preferable scheme of the telecommunication acquisition data switching device for the plastic optical fiber for one receiving and three sending, the invention comprises: the optical path connector is characterized in that a connecting panel is arranged at the front end of the switching shell, an optical path connector is arranged on the connecting panel, a connecting wire is arranged on the optical path connector, and a protective connecting assembly is arranged between the connecting wire and the optical path connector.
As a preferable scheme of the telecommunication acquisition data switching device for the plastic optical fiber for one receiving and three sending, the invention comprises: protection coupling assembling includes that a plurality of rotations connect the head rod of light path line joint department, articulate and connect the pole and set up at the head rod and connect the otic placode of light path line joint department at the head rod second of keeping away from light path line joint one end, wherein, the head rod connects the peripheral circular array setting along the light path line joint, the second connects the pole and corresponds the setting with the head rod, the second connects keeping away from the head rod one end of pole and is equipped with connecting sleeve.
As a preferable scheme of the telecommunication acquisition data switching device for the plastic optical fiber for one receiving and three sending, the invention comprises: the optical path line connector is provided with a connecting block, a connecting groove is formed in the connecting block, a blocking block is connected to the connecting groove in a sliding mode, a connecting rod extends out of the upper end of the blocking block, a sliding groove is formed in the optical path line connector, and an elastic piece is arranged between the connecting rod and the sliding groove.
As a preferable scheme of the telecommunication acquisition data switching device for the plastic optical fiber for one receiving and three sending, the invention comprises: one end, close to the first extension rod, of the connecting sleeve is further provided with a push plate, the push plate is provided with two first inclined plane plates which are arranged in parallel, a first inclined plane is formed in the upper end of each first inclined plane plate, and a second inclined plane corresponding to the first inclined plane is formed in the lower end face of the blocking block.
As a preferable scheme of the telecommunication acquisition data switching device for the plastic optical fiber for one receiving and three sending, the invention comprises: the lower extreme of push pedal is equipped with the dovetail, seted up in the spread groove with dovetail complex dovetail block.
As a preferable scheme of the telecommunication acquisition data switching device for the plastic optical fiber for one receiving and three sending, the invention comprises: and a connecting insertion pipe communicated with the optical line connector is arranged in the connecting block.
The invention has the beneficial effects that: according to the plastic optical fiber electricity consumption information data acquisition switching device capable of receiving three signals, disclosed by the invention, the local communication module, the DEBUG debugging module 407, the power supply module and the indicator lamp are integrated into a whole by multiple modules, and the master control module 4002 is used for realizing a plastic optical fiber local communication network multi-ring network structure module, so that the plastic optical fiber electricity consumption information data acquisition switching device is better suitable for various complex field environments and application scenes of a plastic optical fiber local acquisition system, and the compatibility and the adaptability of the plastic optical fiber acquisition system are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
fig. 1 is a schematic view of the overall structure of a telecommunication collection data switching device for plastic optical fiber for one-transmission and three-reception according to the present invention.
Fig. 2 is a schematic structural diagram of a portion a in fig. 1 of a telecommunication acquisition data switching apparatus for plastic optical fiber for transmitting and receiving three signals according to the present invention.
Fig. 3 is a schematic structural diagram of a protection connection component of a telecommunication acquisition data switching device for plastic optical fibers for receiving and transmitting three signals.
Fig. 4 is a schematic diagram of a logical structure of a data acquisition device of the telecommunication acquisition data switching device for plastic optical fiber for receiving and transmitting three signals according to the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Furthermore, the present invention is described in detail with reference to the drawings, and in the detailed description of the embodiments of the present invention, the cross-sectional view illustrating the structure of the device is not enlarged partially according to the general scale for convenience of illustration, and the drawings are only exemplary and should not be construed as limiting the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
Example 1
Referring to fig. 1 and 4, the telecommunication acquisition data switching device for the plastic optical fiber capable of receiving and transmitting three signals comprises a switching shell and a local communication module, wherein the local communication module comprises an optical signal transceiver module 408, a main control module 400 electrically connected with the optical signal transceiver module 408 and a power supply module for connecting the optical signal transceiver module 408 and the main control module 400; and the intermediate transmission module comprises a debugging module 407, a plastic optical fiber transceiver module electrically connected with the mode adjusting module and an indicator lamp arranged on the power supply module, the debugging module 407 is a serial port debugging functional module, the main control module 400 comprises a main control chip and a control circuit matched with the main control chip, the plastic optical fiber transceiver module comprises a first transceiver module 403, a second transceiver module 404, a third transceiver module 405 and a fourth transceiver module 406 which are electrically connected with the main control chip, and the power supply module comprises a 220V-ACDC module 401 and a DC-DC module 402.
Specifically, the main body of the present invention includes a adapting housing, the adapting housing is rectangular block-shaped, a local communication module is further disposed inside the adapting housing, in this embodiment, the local communication module includes an optical signal transceiver module 408, the optical signal transceiver module 408 is mainly used for receiving an optical signal and then transmitting the optical signal downward, then a main control module 400 is further electrically connected to the optical signal transceiver module 408, the main control module 400 is used for analyzing and processing a signal received from the optical signal transceiver module 408, in this embodiment, the main control module 400 includes a main control chip, the model of the main control chip is AU64 6438BS, the main control chip can identify the optical signal and output data, and then in order to enable the main control chip to start and normally work, a matching control circuit is further disposed inside the adapting housing, the control circuit includes a main board, the mainboard can accept main control chip, still including connecting pin, can carry out the electricity with main control chip's mainboard and be connected.
Furthermore, the local communication module further includes a power module, the power module mainly supplies power to the entire data transfer device and stabilizes voltage, and in this embodiment, the power module further includes a 220V-ACDC module 401 connected to the DC-DC module 402, and the DC-DC module 402 can convert 220V alternating current into 5V direct current, and then the DC-DC module is directly connected to the main control chip in the main control module 400.
Further, the main body of the present invention further includes an intermediate transmission module, in this embodiment, the intermediate transmission module further includes a debugging module 407, the debugging module 407 is a serial port debugging functional module, and is a DEBUG module 407, the DEBUG module 407 needs to provide 5V direct current for debugging, the intermediate transmission module further includes a plastic optical fiber transceiver module electrically connected to the debugging module 407, the plastic optical fiber transceiver module includes a first transceiver module 403, a second transceiver module 404, a third transceiver module 405, and a fourth transceiver module 406, all of which are electrically connected to the main control chip, and adopts a fully transparent transmission communication manner, after any one of the first transceiver module 403, the second transceiver module 404, the third transceiver module 405, and the fourth transceiver module 406 receives information of a plastic optical fiber collector or a concentrator, the other three sets of plastic optical fiber collectors transparently forward the information to the sets of optical fiber transceivers in real time, meanwhile, an indicator lamp is further arranged on the power module and can show the actual working state of the power module, and if the indicator lamp is turned on, the power module works normally.
The operation process is as follows: according to the plastic optical fiber electricity consumption information data acquisition switching device capable of receiving three signals, disclosed by the invention, the local communication module, the DEBUG debugging module 407, the power supply module and the indicator lamp are integrated into a whole by multiple modules, and the master control module 4002 is used for realizing a plastic optical fiber local communication network multi-ring network structure module, so that the plastic optical fiber electricity consumption information data acquisition switching device is better suitable for various complex field environments and application scenes of a plastic optical fiber local acquisition system, and the compatibility and the adaptability of the plastic optical fiber acquisition system are improved.
Example 2
Referring to fig. 1-3, this embodiment differs from the first embodiment in that: the front end of the adapter housing 100 is provided with a connection panel 101, the connection panel 101 is provided with an optical path connector 102, the optical path connector 102 is provided with a connection wire, a protection connection assembly 200 is arranged between the connection wire and the optical path connector 102, the protection connection assembly 200 comprises a plurality of first connection rods 201 rotatably connected to the optical path connector 102, second connection rods 202 hinged to one ends of the first connection rods 201 far away from the optical path connector 102, and ear plates 203 arranged at the positions of the first connection rods 201 and the optical path connector 102, wherein the first connection rods 201 are arranged along the peripheral circular array of the optical path connector 102, the second connection rods 202 are arranged corresponding to the first connection rods 201, one ends of the second connection rods 202 far away from the first connection rods 201 are provided with connection sleeves 204, the optical path connector 102 is provided with connection blocks 205, the connection grooves 206 are arranged in the connection grooves 205, the connection grooves 206 are connected with blocking blocks 207 in a sliding manner, and the upper ends of the, the optical path connector 102 is provided with a sliding groove, an elastic part 209 is arranged between the connecting rod 208 and the sliding groove, one end of the connecting sleeve 204, which is close to the first connecting rod 201, is further provided with a push plate 300, the push plate 300 is provided with two first inclined planes 302 arranged in parallel, the upper end of each first inclined plane 302 is provided with a first inclined plane 302, the lower end surface of the blocking block 207 is provided with a second inclined plane 303 corresponding to the first inclined plane 302, the lower end of the push plate 300 is provided with a dovetail groove, a dovetail block matched with the dovetail groove is arranged in the connecting groove 206, and a connecting insertion pipe communicated with the optical path connector 102 is arranged in the connecting block 205.
Specifically, the front end of the adaptor housing 100 is further provided with a connection panel 101, the connection panel 101 is further provided with four optical line connectors 102 corresponding to the plastic optical fiber transceiver modules 402DC-DC 401220V-ACDC, and the optical line connectors 102 are used for connecting wires to the optical line connectors 102, and in order to facilitate stable plugging and unplugging of an operator, a protection connection assembly 200 is provided between the wires and the optical line connectors 102.
Further, in this embodiment, the protection connection assembly 200 includes a plurality of first extension rods 201 rotatably connected at the interfaces of the optical path joints 102, the rotation planes of the first extension rods 201 are all perpendicular to the surface of the connection panel 101, and the plurality of first extension rods 201 are arranged along the circular array of the interfaces of the optical path joints 102, then a second extension rod 202 is hinged at the front end of each first extension rod 201, the rotation plane of the second extension rod 202 is also perpendicular to the surface of the connection panel 101, then a connection sleeve 204 is rotatably connected at the end of the second extension rod 202 away from the first extension rod 201, the size diameter of the connection sleeve 204 is the same as the size of the optical path joints 102, then an ear plate 203 is arranged at the end of each first extension rod 201, the ear plate 203 is fixed on the optical path joints 102,
further, still be fixed with connecting block 205 on optical line connects 102, connecting block 205's shape is square block, then still seted up the connecting groove 206 in connecting block 205, the sliding connection has separation block 207 in the connecting groove 206, the parallel and surface direction of connecting panel 101 of the slip direction of separation block 207, then still be fixed with connecting rod 208 on separation block 207's lateral wall, connecting rod 208 stretches out outward, and still seted up the groove of sliding on connecting block 205, the groove of sliding supplies connecting rod 208 to slide, then still be connected with elastic component 209 between connecting rod 208 and the groove of sliding, in this embodiment, elastic component 209 is the spring.
Further, in order to drive the blocking block 207 to slide, and then expose the optical line connector 102 for connection, a push plate 300 is further fixed at one end of the connecting sleeve 204 close to the first connecting rod 201, the cross section of the push plate 300 is arc-shaped, then two first inclined planes 302 arranged in parallel are further fixed on the push plate 300, a first inclined plane 302 is further formed at one end of the first inclined plane 302, which is far away from the connecting sleeve 204, of the first inclined plane 302, a second inclined plane 303 is formed at the lower end of the blocking plate, the second inclined plane 303 abuts against the first inclined plane 302, and then when the first inclined plane 302 moves along with the push plate 300, the blocking block 207 is gradually pushed up under the action of the inclined planes.
Meanwhile, in order to ensure the sliding and the accurate butt joint, a dovetail groove is formed at the lower end of the push plate 300, and a dovetail block matched with the dovetail groove is fixed in the connecting groove 206.
The rest of the structure was the same as in example 1.
The operation process is as follows: when an operator inserts the optical connector, the optical connector is inserted into the connecting sleeve 204, and then the optical connector is pushed inward, at this time, the push plate 300 moves forward and approaches the blocking plate, meanwhile, the first inclined surface 302 plate 301 abuts against the blocking plate, the blocking plate is pushed up under the action of the first inclined surface 302 and the second inclined surface 303, then the optical connector can be inserted into the optical line connector 102, meanwhile, the second connecting rod 202 moves to a position close to the first connecting rod 201, the second connecting rod 202 approaches to the first connecting rod 201, then when the optical connector needs to be pulled out, the operator only needs to press the hinged position of the second connecting rod 202 and the first connecting rod 201, and the optical connector is pushed out by the acting force of the first connecting rod 201 and the second connecting rod 202.
It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. A telecommunication collection data switching device for plastic optical fiber capable of receiving three-way transmission, comprising a switching housing (100), characterized in that: also comprises the following steps of (1) preparing,
the local communication module comprises an optical signal transceiving module (408), a main control module (400) electrically connected with the optical signal transceiving module (408), and a power supply module which connects the optical signal transceiving module (408) and the main control module (400); and the number of the first and second groups,
the middle transmission module comprises a debugging module (407), a plastic optical fiber transceiving module electrically connected with the mode adjusting module and an indicator lamp arranged on the power supply module, wherein the debugging module (407) is a serial port debugging functional module.
2. The apparatus of claim 1, wherein the apparatus comprises: the main control module (400) comprises a main control chip and a control circuit matched with the main control chip.
3. The apparatus of claim 2, wherein the apparatus comprises: the plastic optical fiber transceiving module comprises a first transceiving module (403), a second transceiving module (404), a third transceiving module (405) and a fourth transceiving module (406) which are all electrically connected with the main control chip.
4. The apparatus of claim 1, wherein the apparatus comprises: the power supply module comprises a 220V-ACDC module (401) and a DC-DC module (402).
5. The apparatus for transferring collected data of telecommunication for plastic optical fiber with one transceiver and three transceivers according to any one of claims 1 to 4, wherein: switching casing (100) front end is equipped with connection panel (101), it has light path to connect (102) to set up on connection panel (101), be equipped with connecting wire on light path connects (102), be equipped with protection coupling assembling (200) between connecting wire and light path joint (102).
6. The apparatus of claim 3, wherein the apparatus comprises: the protection connecting component (200) comprises a plurality of first connecting rods (201) rotatably connected to the optical path joint (102), second connecting rods (202) hinged to one ends of the first connecting rods (201) far away from the optical path joint (102), and lug plates (203) arranged at the positions of the first connecting rods (201) and the optical path joint (102),
the first connecting rods (201) are arranged along the peripheral circular array of the optical line joints (102), the second connecting rods (202) are arranged corresponding to the first connecting rods (201), and one ends, far away from the first connecting rods (201), of the second connecting rods (202) are provided with connecting sleeves (204).
7. The apparatus of claim 6, wherein the apparatus comprises: be equipped with connecting block (205) on light path line connects (102), connecting groove (206) have been seted up in connecting block (205), the internal sliding of connecting groove (206) is connected with and blocks piece (207), it has connecting rod (208) to stretch out outward to block piece (207) upper end, the groove of sliding has been seted up on light path line connects (102), connecting rod (208) and slide and be equipped with elastic component (209) between the groove.
8. The apparatus for switching acquisition data of telecommunication for plastic optical fiber for one transceiver and three transceivers according to claim 6 or 7, wherein: the connecting sleeve (204) be close to head rod (201) one end and still be equipped with push pedal (300), be equipped with two first inclined plane (302) board (301) of parallel arrangement each other on push pedal (300), first inclined plane (302) have been seted up to first inclined plane (302) board (301) upper end, second inclined plane (303) that correspond with first inclined plane (302) are seted up to the lower terminal surface that blocks piece (207).
9. The apparatus of claim 8, wherein the apparatus comprises: the lower extreme of push pedal (300) is equipped with the dovetail, seted up in spread groove (206) and dovetail complex dovetail block.
10. The apparatus of claim 9, wherein the apparatus comprises: a connecting cannula communicated with the optical line connector (102) is arranged in the connecting block (205).
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| CN202011264769.6A CN112396820B (en) | 2020-11-12 | 2020-11-12 | Telecommunication acquisition data switching device for plastic optical fiber capable of receiving three signals |
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| CN208537779U (en) * | 2018-08-08 | 2019-02-22 | 深圳市英通达光纤技术有限公司 | A kind of simply connected fiber adapter |
| CN208506963U (en) * | 2018-08-14 | 2019-02-15 | 深圳芯珑电子技术有限公司 | A kind of power consumer low-voltage collecting meter reading system |
| CN109347057A (en) * | 2018-11-05 | 2019-02-15 | 国网山东省电力公司烟台供电公司 | A kind of relay protection device optical port component |
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| CN111505356A (en) * | 2020-04-27 | 2020-08-07 | 贵州电网有限责任公司 | Take obtuse angle joint's secondary test line |
| CN111541094A (en) * | 2020-04-30 | 2020-08-14 | 贵州电网有限责任公司 | Take secondary test line that variable angle connects |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114799489A (en) * | 2022-06-28 | 2022-07-29 | 武汉锐科光纤激光技术股份有限公司 | Laser output head switching device and laser output assembly |
| CN114799489B (en) * | 2022-06-28 | 2022-11-01 | 武汉锐科光纤激光技术股份有限公司 | Laser output head switching device and laser output assembly |
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