CN217789816U - 2M link on-off dual-sub signal indicator - Google Patents
2M link on-off dual-sub signal indicator Download PDFInfo
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- CN217789816U CN217789816U CN202221925574.6U CN202221925574U CN217789816U CN 217789816 U CN217789816 U CN 217789816U CN 202221925574 U CN202221925574 U CN 202221925574U CN 217789816 U CN217789816 U CN 217789816U
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Abstract
The utility model discloses a 2M link break-make double sub signal indicator relates to distribution frame technical field. 2M link break-make pair sub-signal indicator, including digital distribution frame and signal indicator, the upper transmission side transmitting terminal of digital distribution frame and/or the transmitting terminal of lower floor's equipment side are inserted and are established and be connected with signal indicator, and signal indicator is used for monitoring the upper transmission side transmitting terminal of digital distribution frame and/or the link state of lower floor's equipment side transmitting terminal, signal indicator includes 2M head main part, crimping sleeve pipe, protective housing and emitting diode, and 2M head main part includes wiring hole, copper core and ground point, and the one end of protective housing is the line hole. The utility model discloses a signal indicator's luminous state carries out visual monitoring to the 2M link state on the current digital distribution frame, can show under the condition that does not influence business normal operating completely, has also promoted the tour and the maintenance efficiency of working class to equipment 2M business greatly.
Description
Technical Field
The utility model relates to a distribution frame technical field specifically is 2M link break-make gemini signal indicator.
Background
The arrangement of Digital Distribution Frames (DDFs) generally takes the form of a columnar arrangement, i.e. in columns. ITU-T G.703 signals (2 Mbits/s) from microwave, fiber and other equipment are connected to the digital distribution frame via 75 omega coaxial cables, which are fixedly connected to the connection base to ensure minimum attenuation of the connection. On the paired wire holders, the wire holder on the left side is a sending wire holder, and the wire holder on the right side is a receiving wire holder. When designing a circuit, signals sent by the same kind of equipment are generally collected together, all the sending signals of the equipment multiplexer are connected to one row of wiring terminals on the left, all the receiving signals of the equipment multiplexer are connected to one row on the right, and because the multiple connection equipment adopts a back-to-back mode, the transceiving of two adjacent wiring bases is the transceiving of two sets of back-to-back equipment.
The DDF distribution frame and the cable forming end of the subway communication specialty are all completed in the construction stage, and once the cable or the connecting terminal of the DDF is broken or loosened in the operation and use stage, the 2M link is physically disconnected or virtually connected. Thereby directly affecting the normal function of the 2M service. The 2M link comprises a receiving core and a transmitting core, and the states of the two cores are kept intact so as to ensure that the 2M service is normal. But it cannot be visually seen at the side of the distribution frame or even at the side of the transmission network management which core cable or connection terminal has a problem, and it is normally checked whether the 2M link is intact, usually by the following method:
(1) Hardware loops back, a DDF (distributed data frame) on the station side corresponds to a port, a terminal vertical insertion is changed into a horizontal insertion, a 2M meter is hung on the center side, and whether a link is normal is tested. The service is interrupted during the test process.
(2) And (4) software loopback, namely, utilizing transmission system software to make a soft loopback at a station, hanging a 2M meter at the center side, and testing whether a link is normal or not. The service needs to be interrupted.
At present, when a DDF distribution frame in a communication machine room is patrolled and overhauled in the subway industry, the operation state of a 2M link on the current DDF distribution frame cannot be visually monitored through instruments or naked eyes due to the fact that the number of terminal rows is large and the service is complex. In addition, the fastening operation of the 2M terminal can only ensure that the 2M terminal is not loosened, but the current state of the cable and the cable joint cannot be judged. Therefore, the signal sensing device capable of monitoring the on-off of the 2M link is designed, and the significance for inspection and overhaul of 2M services in a subway communication machine room is great.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a 2M link break-make gemini signal indicator to solve the problem of proposing among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the 2M link on-off dual-sub signal indicator comprises a digital distribution frame and a signal indicator, wherein the signal indicator is inserted and connected with a transmitting end on an upper transmission side of the digital distribution frame and/or a transmitting end on a lower equipment side, and the signal indicator is used for monitoring the link state of the transmitting end on the upper transmission side of the digital distribution frame and/or the transmitting end on the lower equipment side.
As a preferred technical solution in this application, the signal indicator includes a 2M head main body, a crimping sleeve, a protective shell, and a light emitting diode, the 2M head main body includes a wiring hole, a copper core, and a ground point, one end of the protective shell is a wiring hole, an anode of the light emitting diode is welded to the copper core of the 2M head main body, a cathode of the light emitting diode is welded to the ground point inside the 2M head main body, and a bulb of the light emitting diode can be exposed through the wiring hole of the protective shell.
As a preferred technical solution in this application, the signal indicator further includes a crimping sleeve, and the crimping sleeve is used for pressing the cathode of the light emitting diode to the grounding point.
As a preferred technical solution in the present application, the length of the anode of the light emitting diode is greater than the length of the cathode.
As a preferred technical solution in this application, the color of the light source of the signal indicator at the transmitting end of the upper layer transmission side is different from the color of the light source of the signal indicator at the transmitting end of the lower layer device side.
As a preferred embodiment of the present invention, the crimp sleeve is fixedly attached to the ground point.
As the preferred technical scheme in this application, the external screw thread has been seted up on the 2M head main part, and the inboard of protective housing one end is formed with the internal thread groove with external screw thread looks adaptation.
Compared with the prior art, the beneficial effects of the utility model are that:
the 2M link on-off dual-sub signal indicator has the following advantages:
(1) The invention visually monitors the 2M link state on the current digital distribution frame through the luminous state of the signal indicator, can display the state under the condition of not influencing the normal operation of the service completely, and also greatly improves the inspection and maintenance efficiency of the worker class on the 2M service of the equipment.
(2) The invention can monitor whether the receiving and transmitting cores are reversely inserted or not during construction operation or troubleshooting. The two signal indicators are matched for use, and the receiving and sending of the two adjacent wire holders can be visually monitored, so that the communication link of the transmission system and the equipment system is ensured to be normal.
Drawings
Fig. 1 is a schematic exploded view of a signal indicator according to the present invention;
fig. 2 is a schematic view of a rear panel of the digital distribution frame of the present invention;
fig. 3 is a schematic view of the front panel of the digital distribution frame of the present invention.
In the figure: 1. a 2M head body; 101. an external thread; 102. a wiring hole; 103. a copper core; 104. a ground point; 2. crimping the sleeve; 3. a protective shell; 301. a wire hole; 4. a light emitting diode.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that, in the description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of the description, and do not indicate or imply 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 limiting the present invention.
Further, it will be appreciated that the dimensions of the various elements shown in the figures are not drawn to scale, for ease of description, and that the thickness or width of some layers may be exaggerated relative to other layers, for example.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus, once an item is defined or illustrated in one figure, it will not need to be further discussed or illustrated in detail in the description of the following figure.
As shown in fig. 1-3, the utility model provides a technical solution: the 2M link on-off dual-sub signal indicator comprises a digital distribution frame and a signal indicator, wherein the signal indicator is connected with an upper transmission side transmitting end of the digital distribution frame and/or a lower equipment side transmitting end in an inserting mode and used for monitoring the link state of the upper transmission side transmitting end of the digital distribution frame and/or the lower equipment side transmitting end.
Referring to the ITU-T g.703 standard, the pulse amplitude of a 2M signal transmitted on a DDF distribution frame, if the impedance is 75 ohms, the nominal peak voltage of that 2M signal is 2.37V. The invention refers to a DDF digital distribution frame with 75 ohm impedance of a communication machine room. Thus, the nominal peak voltage of the 2M signal is 2.37V.
In this embodiment, specifically, as shown in fig. 1, the signal indicator includes a 2M head body 1, a pressure contact sleeve 2, a protective shell 3, and a light emitting diode 4,2M, the head body 1 includes a wire connection hole 102, a copper core 103, and a ground point 104, one end of the protective shell 3 is a wire hole 301, an anode of the light emitting diode 4 is welded to the copper core 103 of the 2M head body 1, a cathode of the light emitting diode 4 is welded to the ground point 104 inside the 2M head body 1, a bulb of the light emitting diode 4 can be exposed through the wire hole 301 of the protective shell 3, and the pressure contact sleeve 2 is tightly mounted on the ground point 104.
In this embodiment, first, a light source of the 2M link on-off dual signal indicator is selected, and the light emitting diode 4 is used as the light source, and it is noted that the red light emitting diode has a starting voltage of 1.7-2.5V, the yellow light emitting diode has a starting voltage of 1.9-2.4V, the green light emitting diode has a starting voltage of 2.0-2.4V, and the blue/white light emitting diode has a starting voltage of 3.0-3.8V. According to the 2M signal with the nominal peak voltage of 2.37V and the test of the red, yellow, green, blue and white light LEDs, the red LED and the yellow LED are selected as the light source of the indicator. Specifically, the indicators of the two different light sources can be used independently or in pairs. When the device is used independently, the on-off state of a link of one or a pair of two-megabyte interfaces can be monitored. The pairing use can monitor the link on-off conditions of the two pairs of 2M interfaces measured by the upper port transmission side and the lower port equipment at the same time, and can clearly distinguish whether the link problem is the link problem of the upper layer transmission side or the link problem is the link problem of the lower layer equipment side.
In the embodiment, the wiring of the light emitting diode 4 is that, the signal indicator is improved on the basis of the existing 2M head, specifically, on the basis of the 2M head, a light emitting light source is additionally arranged, the light emitting diode 4 is conducted in the forward direction, and when the starting voltage of the light emitting diode 4 is reached, the light emitting diode 4 can continuously emit light, the light emitting diode 4 and the 2M head are welded, and a conducting closed loop is created between the light emitting diode 4 and the 2M head. The anode of the led 4 is soldered to the copper core 103 of the 2M terminal. The cathode stub of the led 4 is soldered to the ground point 104 inside the 2M head and then fastened with the crimp sleeve 2. The bulb of the led 4 can just be exposed through the wire hole 301 of the 2M head. It should be noted that the cathode of the led 4 is trimmed and can be spot welded to the grounding point 104.
Specifically, the signal indicator captures a voltage value of a 2M link on the DDF digital distribution frame, when the captured voltage value can drive the light source, the light source emits red or yellow light, if the voltage output is constant, and within an effective range, the light source emits continuous light, and if the light source emits continuous constant light, it can be verified that the current 2M link is normal, and there is no virtual connection or disconnection. Adding a light source that does not illuminate or frequently flashes, or even does not illuminate, may indicate that the current 2M link is problematic.
This signal indicator is exactly through reforming transform the 2M head, utilizes the hole and the welding space that are used for the threading originally, implants emitting diode 4, forms inside through the welding and switches on the return circuit. The signal indicators, after being connected to the terminal rows of the digital distribution frame, may receive electrical signals transmitted by the upper transmission system or electrical signals transmitted by the lower equipment system. When the voltage is conducted in the forward direction and the voltage value reaches the starting voltage of the light emitting diode 4, the light emitting diode 4 emits light, and if the voltage signal is stable, the light emitting of the diode is continued, and the light source is kept normally on. Therefore, voltage monitoring of the 2M link and the 2M port is realized, whether the output voltage value of the current port is normal or not, whether the link and the terminal have problems or not is judged by judging whether the output voltage value of the current port is normal or not and whether the output voltage value of the current port is normal or not is judged. Moreover, the 2M head is developed by considering the tight connection between the 2M and the DDF distribution frame, so that the method is stable and reliable and avoids the problem of unmatched interfaces. The connector is inserted into a terminal in the middle of a 2M connector at ordinary times, and on the premise that 2M service is not influenced, whether the current pair of receiving and transmitting terminals is normal or not is monitored in real time, so that the connector is clear at a glance.
In this embodiment, specifically, as shown in fig. 1, an external thread 101 is formed on the 2M head body 1, and an internal thread groove adapted to the external thread 101 is formed on the inner side of one end of the protective shell 3. After the light emitting diode 4 is installed, the protective shell 3 is screwed into the 2M head body 1, and at this time, the light emitting diode 4 is just placed in the wire hole 301.
In particular, when the signal indicator is used for monitoring, the signal indicator is firstly connected to a terminal row of a digital distribution frame according to requirements, and particularly can be usually inserted into a test hole of a DDF terminal L9-JKJ tee. The signal indicator can then receive the electrical signal sent by the upper layer transmission system or the electrical signal sent by the lower layer equipment system, and the signal indicator comprises a red light source signal indicator and a yellow light source signal indicator. The two indicators with different light sources can be used independently or in pairs. When the device is used independently, the on-off state of a link of one or a pair of two-megabyte interfaces can be monitored. The pairing use can monitor the link on-off conditions of the two pairs of 2M interfaces measured by the upper port transmission side and the lower port equipment at the same time, and can clearly distinguish whether the link problem is the link problem of the upper layer transmission side or the link problem is the link problem of the lower layer equipment side.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1.2M periodic line break-make pair sub-signal indicator, including digital distribution frame and signal indicator, its characterized in that: and a signal indicator is inserted and connected with a transmitting end of an upper transmission side and/or a transmitting end of a lower equipment side of the digital distribution frame, and the signal indicator is used for monitoring the link state of the transmitting end of the upper transmission side and/or the transmitting end of the lower equipment side of the digital distribution frame.
2. The 2M link on-off dual sub-signal indicator of claim 1, wherein: the signal indicator comprises a 2M head main body (1), a protective shell (3) and a light-emitting diode (4), wherein the 2M head main body (1) comprises a wiring hole (102), a copper core (103) and a grounding point (104), one end of the protective shell (3) is a wiring hole (301), the anode of the light-emitting diode (4) is welded with the copper core (103) of the 2M head main body (1), the cathode of the light-emitting diode (4) is welded with the grounding point (104) inside the 2M head main body (1), and a bulb of the light-emitting diode (4) can be exposed through the wiring hole (301) of the protective shell (3).
3. The 2M link on-off dual sub-signal indicator of claim 2, wherein: the signal indicator further comprises a crimping sleeve (2), and the crimping sleeve (2) is used for pressing the negative electrode of the light-emitting diode (4) to the grounding point (104).
4. The 2M link on-off dual sub-signal indicator of claim 2, wherein: the length of the anode of the light-emitting diode (4) is larger than that of the cathode.
5. The 2M link on-off dual sub-signal indicator of claim 1, wherein: and the color of the light source of the signal indicator at the transmitting end of the upper layer transmission side is different from that of the signal indicator at the transmitting end of the lower layer equipment side.
6. The 2M link on-off dual sub-signal indicator of claim 3, wherein: the crimping sleeve (2) is fixedly mounted on the grounding point (104).
7. The 2M link on-off dual sub-signal indicator of claim 2, wherein: external screw thread (101) have been seted up on 2M head main part (1), and the inboard of protective housing (3) one end is formed with the internal thread groove with external screw thread (101) looks adaptation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221925574.6U CN217789816U (en) | 2022-07-25 | 2022-07-25 | 2M link on-off dual-sub signal indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221925574.6U CN217789816U (en) | 2022-07-25 | 2022-07-25 | 2M link on-off dual-sub signal indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217789816U true CN217789816U (en) | 2022-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221925574.6U Active CN217789816U (en) | 2022-07-25 | 2022-07-25 | 2M link on-off dual-sub signal indicator |
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|---|---|
| CN (1) | CN217789816U (en) |
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- 2022-07-25 CN CN202221925574.6U patent/CN217789816U/en active Active
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