CN211151532U - Portable data communication station - Google Patents
Portable data communication station Download PDFInfo
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- CN211151532U CN211151532U CN201921894449.1U CN201921894449U CN211151532U CN 211151532 U CN211151532 U CN 211151532U CN 201921894449 U CN201921894449 U CN 201921894449U CN 211151532 U CN211151532 U CN 211151532U
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- communication station
- data communication
- portable data
- capacitor
- antenna
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Abstract
The utility model discloses a portable data communication station, including basic station, antenna and power, this communication station still includes electric capacity C1, two C2 of electric capacity, inductance L, resistance R and lightning protection unit, the both ends of electric capacity one are connected respectively basic station and antenna, electric capacity one and antenna are connected to the one end of inductance, its other end connecting resistance and lightning protection unit, the lightning protection unit includes temperature fuse Tf, piezo-resistor MOV and gas discharge tube GDT, temperature fuse, piezo-resistor and gas discharge tube establish ties in proper order, and connects between inductance and ground, the other end connection power of resistance, the one end connection power of electric capacity two, its other end ground connection, the utility model discloses a lightning damage problem and the signal interference problem of base station equipment when using can effectively be solved to portable data communication station.
Description
Technical Field
The utility model relates to a communication station technical field, concretely relates to portable data communication station.
Background
At present, communication station equipment mostly adopts a microelectronic circuit with high integration level, and communication electronic equipment is technically characterized by high integration level, weak overvoltage and overcurrent resistance of devices, sensitivity to external electromagnetic interference, low impact resistance level, sensitivity to lightning electromagnetic pulse and easiness in damage by surge overvoltage. The invasion mode of the lightning to the communication station comprises the following steps: (1) lightning strikes the outside of a building, and transient voltage drop is caused on a grounding resistor; (2) lightning strikes the outside of the building, and overvoltage is induced inside the building; (3) lightning strikes the overhead cable of the remote power supply to cause overvoltage; (4) lightning between cloud layers induces overvoltage to the power supply overhead cable; (5) lightning strikes distant ground and underground communication cables cause overvoltage due to ground potential rise or induction. Communication stations that concentrate on the use of microelectronic devices must take appropriate protective measures to avoid the danger to the communication equipment, transmission lines and related personnel due to over-voltages and resulting over-currents.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a portable data communication station with lightning protection performance.
In order to solve the technical problem, the utility model provides a portable data communication station, including basic station, antenna and power, this communication station still includes electric capacity C1, two C2 of electric capacity, inductance L, resistance R and lightning protection unit, the both ends of electric capacity one are connected respectively basic station and antenna, electric capacity one and antenna are connected to the one end of inductance, its other end connecting resistance and lightning protection unit, the lightning protection unit includes temperature fuse Tf, piezo-resistor MOV and gas discharge tube GDT, temperature fuse, piezo-resistor and gas discharge tube establish ties in proper order, and connect between inductance and ground, the power is connected to the other end of resistance, the one end of electric capacity two is connected the power, its other end ground connection.
The utility model discloses a preferred embodiment, further include that this communication station still includes transient state suppression diode TVS, transient state suppression diode and electric capacity two are parallelly connected, its one end connection power and resistance, and the other end ground connection.
In a preferred embodiment of the present invention, the voltage dependent resistor is a voltage dependent resistor with a temperature safety.
In a preferred embodiment of the present invention, it is further included that the piezoresistors have at least two groups.
In a preferred embodiment of the present invention, the two sets of piezoresistors are connected in series.
In a preferred embodiment of the present invention, the two sets of piezoresistors are connected in parallel.
In a preferred embodiment of the present invention, the power supply is a high voltage dc power supply.
The utility model has the advantages that:
the utility model discloses a communication station, the whole that establishes ties in proper order by temperature fuse, piezo-resistor and gas discharge tube constitutes one-level lightning protection basic station and avoids the thunderbolt damage. The gas discharge tube is completely opened when no thunder occurs, so that the leakage current of the piezoresistor can be blocked, the heat accumulation effect of the piezoresistor under the direct-current condition can be relieved, and the ground insulation property of the piezoresistor used for a long time can be ensured; (2) the temperature fuse has self-recovery, and when the operating temperature of piezo-resistor exceeded the default, the temperature fuse opened, and the temperature fuse resets when the temperature recovers to the normal atmospheric temperature, and the lightning protection merges the return circuit once more, further solves the piezo-resistor and causes the problem that the leakage current influences ground insulating nature because of the heat accumulation effect.
On the other hand, the radio-frequency signal sent by the base station is transmitted to the antenna through the first capacitor, and the inductor and the capacitor form a low-pass filter to isolate the radio-frequency signal, so that the radio-frequency signal is not transmitted to a power supply end, and the loss of the radio-frequency signal is reduced; the direct current provided by the power supply end is transmitted to the antenna through the resistor and the inductor, the capacitor prevents the direct current from passing through the base station to protect the base station, and the radio frequency signal and the direct current signal are simultaneously transmitted to the antenna.
Drawings
Fig. 1 is a schematic circuit diagram of a communication station in a preferred embodiment of the invention.
Detailed Description
The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
Examples
The present embodiment discloses a portable data communication station, which, as shown in fig. 1, includes a base station, an antenna, a high voltage dc power supply, a capacitor C1, a capacitor C2, an inductor L, a resistor R, a lightning protection unit, and a transient suppression diode TVS.
The two ends of the first capacitor C1 are respectively connected with the base station and the antenna, one end of the inductor L is connected with the first capacitor C1 and the antenna, the other end of the inductor R is connected with the resistor R and the lightning protection unit, the other end of the resistor R is connected with the power supply, one end of the second capacitor C2 is connected with the power supply, the other end of the capacitor C2 is grounded, a radio-frequency signal sent by the base station is transmitted to the antenna through the first capacitor, the inductor and the capacitor form a low-pass filter to isolate the radio-frequency signal from a power supply end, loss of the radio-frequency signal is reduced, direct current provided by the power supply end is transmitted to the antenna through the resistor and the inductor, the first capacitor prevents direct current from passing through the.
The lightning protection unit comprises a temperature fuse Tf, a piezoresistor MOV and a gas discharge tube GDT, wherein the piezoresistor MOV is a piezoresistor with a temperature fuse, the temperature fuse Tf, the piezoresistor MOV and the gas discharge tube GDT are sequentially connected in series and are connected between an inductor L and the ground, the temperature fuse Tf, the piezoresistor MOV and the gas discharge tube GDT are sequentially connected in series to form a primary lightning protection base station to be protected from lightning stroke, wherein (1) the gas discharge tube GDT is completely opened when no lightning occurs, can block leakage current of the piezoresistor MOV, relieves heat accumulation effect of the piezoresistor MOV under direct current conditions, ensures insulation to the ground for long-term use, 2) the temperature fuse Tf has self-recovery property, is disconnected when the working temperature of the piezoresistor MOV exceeds a preset value, and is reset when the temperature returns to normal temperature, protection is merged into a loop again, further solves the problem that the leakage current affects the insulation to the ground caused by the piezoresistor MOV, and (3) can effectively improve the reliability of lightning protection by improving the use of the lightning protection.
The transient suppression diode TVS is connected with the capacitor II C2 in parallel, one end of the transient suppression diode TVS is connected with the power supply and the resistor R, the other end of the transient suppression diode TVS is grounded, and the transient suppression diode TVS forms a secondary lightning protection to protect the base station from being damaged by lightning.
In order to further improve the insulation of the piezoresistor to the ground caused by the heat accumulation effect, the piezoresistor has at least two groups. In one implementation of this embodiment, the two sets of piezoresistors are connected in series. In another implementation scheme, the two groups of piezoresistors are connected in parallel.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.
Claims (7)
1. A portable data communication station comprises a base station, an antenna and a power supply and is characterized by further comprising a first capacitor (C1), a second capacitor (C2), an inductor (L), a resistor (R) and a lightning protection unit, wherein two ends of the first capacitor are respectively connected with the base station and the antenna, one end of the inductor is connected with the first capacitor and the antenna, the other end of the inductor is connected with the resistor and the lightning protection unit, the lightning protection unit comprises a temperature fuse (Tf), a piezoresistor (MOV) and a Gas Discharge Tube (GDT), the temperature fuse, the piezoresistor and the gas discharge tube are sequentially connected in series and are connected between the inductor and the ground, the other end of the resistor is connected with the power supply, one end of the second capacitor is connected with the power supply, and the other end of the second capacitor is grounded.
2. A portable data communication station as recited in claim 1, wherein: the communication station further comprises a transient suppression diode (TVS) which is connected with the second capacitor in parallel, one end of the TVS is connected with the power supply and the resistor, and the other end of the TVS is grounded.
3. A portable data communication station as recited in claim 1, wherein: the piezoresistor is a piezoresistor with a temperature fuse.
4. A portable data communication station as recited in claim 1 or 3, wherein: the piezoresistors have at least two groups.
5. A portable data communication station as recited in claim 4, wherein: the two groups of piezoresistors are connected in series.
6. A portable data communication station as recited in claim 4, wherein: the two groups of piezoresistors are connected in parallel.
7. A portable data communication station as recited in claim 1, wherein: the power supply is a high-voltage direct-current power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921894449.1U CN211151532U (en) | 2019-11-05 | 2019-11-05 | Portable data communication station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921894449.1U CN211151532U (en) | 2019-11-05 | 2019-11-05 | Portable data communication station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211151532U true CN211151532U (en) | 2020-07-31 |
Family
ID=71772103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921894449.1U Active CN211151532U (en) | 2019-11-05 | 2019-11-05 | Portable data communication station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211151532U (en) |
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2019
- 2019-11-05 CN CN201921894449.1U patent/CN211151532U/en active Active
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