CN209823411U - Signal protection device applied to signal centralized monitoring system - Google Patents
Signal protection device applied to signal centralized monitoring system Download PDFInfo
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- CN209823411U CN209823411U CN201821780232.3U CN201821780232U CN209823411U CN 209823411 U CN209823411 U CN 209823411U CN 201821780232 U CN201821780232 U CN 201821780232U CN 209823411 U CN209823411 U CN 209823411U
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Abstract
The utility model provides a signal protection device applied to a signal centralized monitoring system, which comprises a magnetic ring, a current-limiting resistor, a gas discharge tube, a TVS tube, an input terminal and an output terminal; one end of the magnetic ring is connected with the input terminal, and the other end of the magnetic ring is sequentially connected with the current-limiting resistor and the output terminal and is used for dividing and limiting the voltage of the lightning electromagnetic pulse received by the input terminal; one end of the gas discharge tube is connected with one end of the magnetic ring, and the other end of the gas discharge tube is connected with the grounding end and used for discharging energy of the lightning electromagnetic pulse; one end of the TVS tube is connected with the current-limiting resistor, and the other end of the TVS tube is connected with a grounding end and used for changing the lightning electromagnetic pulse between two poles of the TVS tube from high impedance to low impedance. The signal protection device applied to the signal centralized monitoring system has the advantages of scientific design, strong practicability, simple structure and low production cost.
Description
Technical Field
The utility model relates to a railway signal centralized monitoring system, specific theory has related to a be applied to signal centralized monitoring system's signal protector.
Background
The signal centralized monitoring system is important traffic safety equipment for railway transportation, and has important significance for further strengthening the management of a joint part and improving and optimizing field maintenance operation. The signal centralized monitoring system is installed in a signal mechanical room of a vehicle station, the signal mechanical room is connected with outdoor signal equipment through a cable, and after the outdoor equipment is struck by lightning, the electromagnetic field effect generated in the space by lightning stroke discharge appears on a conductor or electrical and electronic equipment in a pulse form; the cable introduces the thunder and lightning electromagnetic pulse into the signal mechanical room, which causes a great deal of damage to the equipment in the signal mechanical room. How to improve the protection performance of the equipment is a problem to be solved by each equipment manufacturer.
In order to solve the above problems, people are always seeking an ideal technical solution.
Disclosure of Invention
The utility model aims at the not enough of prior art to a signal protector for signal centralized monitoring system is applied to design science, practicality are strong, simple structure and low in production cost is provided.
In order to realize the purpose, the utility model discloses the technical scheme who adopts is: a signal protection device applied to a signal centralized monitoring system comprises a magnetic ring, a current-limiting resistor, a gas discharge tube, a TVS tube, an input terminal and an output terminal;
one end of the magnetic ring is connected with the input terminal, and the other end of the magnetic ring is sequentially connected with the current-limiting resistor and the output terminal and is used for dividing and limiting the voltage of the lightning electromagnetic pulse received by the input terminal;
one end of the gas discharge tube is connected with one end of the magnetic ring, and the other end of the gas discharge tube is connected with the grounding end and used for discharging energy of the lightning electromagnetic pulse;
one end of the TVS tube is connected with the current-limiting resistor, and the other end of the TVS tube is connected with a grounding end and used for changing the lightning electromagnetic pulse between two poles of the TVS tube from high impedance to low impedance.
Based on the above, the model of the TVS tube is SMAJ40 CA.
Based on the above, the model number of the gas discharge tube is BC 301N-D.
Based on the above, this signal protector still includes the casing, the casing sets up input interface and output interface, input interface with input terminal links to each other, output interface with output terminal links to each other.
Based on the above, the input terminal is connected with the output end of the wiring box.
Based on the above, output terminal links to each other with the connecting terminal of centralized monitoring collection rack.
Compared with the prior art, the utility model has substantive characteristics and progress, in particular to the utility model provides a signal protection device applied to a signal centralized monitoring system, which comprises a magnetic ring, a current-limiting resistor, a gas discharge tube, a TVS tube, an input terminal and an output terminal, and the utility model is installed in the signal centralized monitoring system, thereby realizing the safety protection of the collected signals, avoiding the damage phenomenon of the collecting equipment of the signal centralized monitoring system after the discharge of lightning stroke, and improving the protection performance of the collecting equipment of the signal centralized monitoring system; the novel LED lamp has the advantages of scientific design, strong practicability, simple structure and low production cost.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an installation schematic diagram of the present invention.
Wherein, 1, a magnetic ring; 2. a current limiting resistor; 3. a gas discharge tube; 4. and a TVS tube.
Detailed Description
The technical solution of the present invention will be described in further detail through the following embodiments.
As shown in fig. 1 and fig. 2, a signal protection device applied to a signal centralized monitoring system comprises a magnetic ring 1, a current-limiting resistor 2, a gas discharge tube 3, a TVS tube 4, an input terminal and an output terminal;
one end of the magnetic ring 1 is connected with the input terminal, and the other end of the magnetic ring is sequentially connected with the current limiting resistor 2 and the output terminal and is used for dividing and limiting the voltage of the lightning electromagnetic pulse received by the input terminal;
one end of the gas discharge tube 3 is connected with one end of the magnetic ring 1, and the other end of the gas discharge tube is connected with a grounding end and used for carrying out energy release on the lightning electromagnetic pulse;
one end of the TVS tube 4 is connected with the current-limiting resistor 2, and the other end of the TVS tube is connected with a grounding end, so that the lightning electromagnetic pulse between two electrodes of the TVS tube 4 is changed from high impedance to low impedance.
Specifically, the gas discharge tube 3 is BC301N-D in model, and the gas discharge tube has a strong current discharge capability, which is a main energy discharge component in the present invention, and can only protect us-level high voltage pulse because its response time is us-level; the magnetic ring 1 has an inhibiting effect on instantaneous high-frequency signals; the current limiting resistor 2 is used for dividing and limiting the voltage of the lightning electromagnetic pulse to prevent the TVS tube from being burnt out due to overload; the model of the TVS tube is SMAJ40CA, the TVS response time is ns level, ns level high-frequency pulse can be protected, and lightning electromagnetic pulse between two electrodes of the TVS tube can be changed from high impedance to low impedance.
The signal protection device further comprises a shell, wherein the shell is provided with an input interface and an output interface, the input interface is connected with the input terminal, and the output interface is connected with the output terminal.
When the wiring box is used, the input terminal is connected with the output end of the wiring box; the output terminal is connected with a connecting terminal of the centralized monitoring and collecting cabinet; after outdoor equipment is struck by lightning, lightning electromagnetic pulses sequentially pass through the wiring box, the protective device and the connecting terminal of the centralized monitoring and collecting cabinet, the protective device carries out energy discharge on the lightning electromagnetic pulses through the gas discharge tube, the lightning electromagnetic pulses between two poles of the TVS tube are changed from high impedance to low impedance through the TVS tube, surge power up to thousands of watts is absorbed, voltage between the two poles is clamped at a preset value, and precise components in the centralized monitoring and collecting cabinet are effectively protected from being damaged by the lightning electromagnetic pulses. The device realizes the safety protection of the collected signals, avoids the phenomenon that the collecting equipment of the signal centralized monitoring system is damaged after being discharged by lightning, and improves the protective performance of the collecting equipment of the signal centralized monitoring system.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (2)
1. The utility model provides a be applied to signal centralized monitoring system's signal protector which characterized in that: the device comprises a magnetic ring, a current-limiting resistor, a gas discharge tube, a TVS tube, an input terminal and an output terminal;
one end of the magnetic ring is connected with the input terminal, and the other end of the magnetic ring is sequentially connected with the current-limiting resistor and the output terminal and is used for dividing and limiting the voltage of the lightning electromagnetic pulse received by the input terminal;
one end of the gas discharge tube is connected with one end of the magnetic ring, and the other end of the gas discharge tube is connected with the grounding end and used for discharging energy of the lightning electromagnetic pulse;
one end of the TVS tube is connected with the current limiting resistor, and the other end of the TVS tube is connected with a grounding end and used for changing the lightning electromagnetic pulse between two poles of the TVS tube from high impedance to low impedance;
the model of the TVS tube is SMAJ40 CA; the model of the gas discharge tube is BC 301N-D;
the signal protection device also comprises a shell, wherein the shell is provided with an input interface and an output interface, the input interface is connected with the input terminal, and the output interface is connected with the output terminal;
the input terminal is connected with the output end of the wiring box.
2. The signal protection device applied to the signal centralized monitoring system according to claim 1, wherein: the output terminal is connected with the connecting terminal of the centralized monitoring and collecting cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821780232.3U CN209823411U (en) | 2018-10-31 | 2018-10-31 | Signal protection device applied to signal centralized monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821780232.3U CN209823411U (en) | 2018-10-31 | 2018-10-31 | Signal protection device applied to signal centralized monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209823411U true CN209823411U (en) | 2019-12-20 |
Family
ID=68868368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821780232.3U Active CN209823411U (en) | 2018-10-31 | 2018-10-31 | Signal protection device applied to signal centralized monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209823411U (en) |
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2018
- 2018-10-31 CN CN201821780232.3U patent/CN209823411U/en active Active
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