CN206595710U - Lightning protection circuit, lightning protection device and electronic equipment - Google Patents
Lightning protection circuit, lightning protection device and electronic equipment Download PDFInfo
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- CN206595710U CN206595710U CN201720314381.XU CN201720314381U CN206595710U CN 206595710 U CN206595710 U CN 206595710U CN 201720314381 U CN201720314381 U CN 201720314381U CN 206595710 U CN206595710 U CN 206595710U
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Abstract
The utility model discloses a kind of lightning protection circuit, lightning protection device and electronic equipment, and wherein lightning protection circuit includes power port protection circuit, aerial signal port protection circuit and discharge circuit, and aerial signal port protection circuit is connected with antennal interface；Power port protection circuit is connected between antennal interface and direct-flow voltage regulation source；Discharge circuit is connected with antennal interface；Power port protection circuit includes Schottky diode, the first Transient Suppression Diode and decoupling circuit；The anode of Schottky diode is connected with direct-flow voltage regulation source, the negative electrode of Schottky diode and one end of decoupling circuit are connected, the other end of decoupling circuit is connected with antennal interface, the first end of first Transient Suppression Diode and the negative electrode of Schottky diode are connected, the second end ground connection of the first Transient Suppression Diode.Technical solutions of the utility model improve the lightning protection grade of equipment, reduce thunderbolt risk.
Description
Technical field
The utility model is related to anti-thunder technical field, more particularly to a kind of lightning protection circuit, using the lightning protection electricity
The electronic equipment of the lightning protection device and application on the road lightning protection device.
Background technology
Due to GPS (Global Positioning System, global positioning system)/BD (BeiDou Navigation
Satellite System, Beidou satellite navigation system) signal it is weaker, so GPS/BD antennas are generally required using active day
Line, therefore not only needed to aerial signal port lightning protection for the lightning protection of GPS/BD antenna openings, in addition it is also necessary to power supply port is prevented
Thunder.
Relatively low for GPS/BD lightning protection degree of protection at present, the communication equipment with GPS/BD antenna openings exists larger by thunder and lightning
The risk of damage, causes economic loss.
Utility model content
Main purpose of the present utility model is to propose a kind of lightning protection circuit, it is intended to improve the lightning protection grade of equipment, is dropped
Low thunderbolt risk.
To achieve the above object, the utility model proposes lightning protection circuit, including power port protection circuit, antenna
Signal port protection circuit and discharge circuit, the aerial signal port protection circuit are connected with antennal interface；Power port is protected
Protection circuit is connected between the antennal interface and direct-flow voltage regulation source；The discharge circuit is connected with the antennal interface；
The power port protection circuit includes Schottky diode, the first Transient Suppression Diode and decoupling circuit；Institute
The anode for stating Schottky diode is connected with the direct-flow voltage regulation source, the negative electrode of the Schottky diode and the decoupling circuit
One end connection, the other end of the decoupling circuit is connected with the antennal interface, the of first Transient Suppression Diode
One end is connected with the negative electrode of the Schottky diode, the second end ground connection of the first Transient Suppression Diode.
Preferably, the discharge circuit is a gas-discharge tube.
Preferably, the decoupling circuit includes first resistor and inductance, the first end of the first resistor and described first
The negative electrode connection of Transient Suppression Diode, the second end of the first resistor is connected with one end of the inductance, the inductance
The other end is connected with the antennal interface.
Preferably, the inductance is air core inductor.
Preferably, first Transient Suppression Diode is unidirectional Transient Suppression Diode, and first transient state suppresses two
The plus earth of pole pipe, the negative electrode of first Transient Suppression Diode is connected with the negative electrode of the Schottky diode.
Preferably, the signal port protection circuit includes the first electric capacity and the second Transient Suppression Diode；Described first
The first end of electric capacity is connected with the antennal interface, and the second end of first electric capacity is connected with aerial signal input port；Institute
The first end for stating the second Transient Suppression Diode is connected with the second end of first electric capacity, second Transient Suppression Diode
The second end ground connection.
The present invention proposes a kind of lightning protection device, and the lightning protection device includes lightning protection circuit as described above.The lightning protection
Circuit includes power port protection circuit, aerial signal port protection circuit and discharge circuit, the aerial signal port protection
Circuit is connected with antennal interface；Power port protection circuit is connected between the antennal interface and direct-flow voltage regulation source；It is described to put
Circuit is connected with the antennal interface；
The power port protection circuit includes Schottky diode, the first Transient Suppression Diode and decoupling circuit；Institute
The anode for stating Schottky diode is connected with the direct-flow voltage regulation source, the negative electrode of the Schottky diode and the decoupling circuit
One end connection, the other end of the decoupling circuit is connected with the antennal interface, the of first Transient Suppression Diode
One end is connected with the negative electrode of the Schottky diode, the second end ground connection of the first Transient Suppression Diode.
The present invention proposes a kind of electronic equipment, and the electronic equipment includes lightning protection device as described above.
Technical solutions of the utility model are by setting power port protection circuit, aerial signal port protection circuit and electric discharge
Circuit, forms a kind of lightning protection circuit.When direct-flow voltage regulation source is impacted by forward direction thunderbolt, thunderbolt energy passes through power port
Residual voltage is higher after protection circuit is released, and may result in direct-flow voltage regulation source damage, therefore be output to decoupling electricity in direct-flow voltage regulation source
One Schottky diode of series connection between road, by the one-way conduction characteristic of diode, prevents surge energy from damaging DC voltage-stabilizing
Source, improves lightning protection circuit anti-lightning ability.Technical solutions of the utility model can improve the lightning protection grade of equipment, reduce thunder
Risk is hit, the economic loss caused by thunder and lightning is reduced.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to the structure shown in these accompanying drawings.
Fig. 1 is the structural representation of the embodiment of the utility model lightning protection circuit one.
Drawing reference numeral explanation：
| Label | Title | Label | Title |
| 100 | Power port protection circuit | TVS2 | Second Transient Suppression Diode |
| 110 | Decoupling circuit | R1 | First resistor |
| 200 | Aerial signal port protection circuit | C1 | First electric capacity |
| 300 | Discharge circuit | D1 | Schottky diode |
| 400 | Antennal interface | G1 | Gas-discharge tube |
| 500 | Direct-flow voltage regulation source | L1 | Inductance |
| 600 | Aerial signal input port | TVS1 | First Transient Suppression Diode |
Realization, functional characteristics and the advantage of the utility model purpose will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present utility model, rather than all
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of the utility model protection.
If it is to be appreciated that related in the utility model embodiment directionality indicate (such as upper and lower, left and right, it is preceding,
Afterwards ...), then directionality indicates to be only used for explaining relative between each part under a certain particular pose (as shown in drawings)
Position relationship, motion conditions etc., if the particular pose changes, directionality indicates also correspondingly therewith to change.
If, should " first ", " the in addition, relate to the description of " first ", " second " etc. in the utility model embodiment
Two " etc. description is only used for describing purpose, and it is not intended that indicating or implying its relative importance or implicit indicate meaning
The quantity of the technical characteristic shown.Thus, " first " is defined, the feature of " second " can express or implicitly include at least one
Individual this feature.In addition, the technical scheme between each embodiment can be combined with each other, but must be with ordinary skill
Personnel can be implemented as basis, when the combination appearance of technical scheme is conflicting or can not realize it will be understood that this technical side
The combination of case is not present, also not within the protection domain of the utility model requirement.
The utility model proposes a kind of lightning protection circuit.
In the utility model embodiment, as shown in figure 1, the lightning protection circuit include power port protection circuit 100,
Aerial signal port protection circuit 200 and discharge circuit 300, the aerial signal port protection circuit 200 and antennal interface
In 400 connections, the present embodiment, the antennal interface uses SMA interfaces.Power port protection circuit 100 is connected to the antenna and connect
Between mouth 400 and direct-flow voltage regulation source 500；The discharge circuit 300 is connected with the antennal interface 400, at the same with the power supply
Port protection circuit 100 is connected, and the power port protection circuit 100 and aerial signal port protection circuit 200 share electric discharge
Circuit 300.
Wherein, power port protection circuit 100 coordinates jointly with discharge circuit 300, when there is thunderbolt, will flow into power end
High voltage in mouth loop is released to greatly；Similarly aerial signal port protection circuit 200 coordinates jointly with discharge circuit 300,
The high voltage for formation of being struck by lightning is released to greatly.
The power port protection circuit 100 includes Schottky diode D1, the first Transient Suppression Diode TVS1 and moved back
Coupling circuit 110；The anode of the Schottky diode D1 is connected with the direct-flow voltage regulation source 500, the Schottky diode D1
Negative electrode be connected with one end of the decoupling circuit 110, the other end of the decoupling circuit 110 is connected with the antennal interface,
The first end of the first Transient Suppression Diode TVS1 is connected with the negative electrode of the Schottky diode D1, and the first transient state suppresses
Diode TVS1 the second end ground connection.
In the present embodiment, because impact of being struck by lightning suffered by equipment is divided into, forward direction thunderbolt is impacted and negative sense is struck by lightning and impacted, so working as
When direct-flow voltage regulation source 500 is impacted by forward direction thunderbolt, thunderbolt energy is released by TVS1 (i.e. the first Transient Suppression Diode TVS1)
Residual voltage is higher afterwards, may result in direct-flow voltage regulation source 500 and damages, therefore is connected between direct-flow voltage regulation source 500 is output to TVS1
One Schottky diode D1, by the one-way conduction characteristic of diode, prevents surge energy from damaging direct-flow voltage regulation source 500, with
Improve lightning protection grade.
Technical solutions of the utility model are by setting power port protection circuit 100, aerial signal port protection circuit
200 and discharge circuit 300, form a kind of lightning protection circuit.So when direct-flow voltage regulation source 500 is impacted by forward direction thunderbolt,
Energy residual voltage after power port protection circuit 100 is released of being struck by lightning is higher, may result in direct-flow voltage regulation source 500 and damages, because
This Schottky diode D1 that connected between direct-flow voltage regulation source 500 is output to decoupling circuit 110, passes through the unidirectional of diode
On state characteristic, prevents surge energy from damaging direct-flow voltage regulation source 500, improves lightning protection circuit anti-lightning ability.This practicality is new
Type technical scheme improves the lightning protection grade of equipment, reduces thunderbolt risk, reduces the economic loss caused by thunder and lightning.
In one embodiment, the discharge circuit 300 is a gas-discharge tube G1.Gas-discharge tube G1 first end with
The common port connection of antennal interface 400 and aerial signal port protection circuit 200 connection.
Further, the decoupling circuit 110 also includes first resistor R1 and inductance L1, the first of the first resistor R1
End is connected with the negative electrode of the first Transient Suppression Diode TVS1, and the second end of the first resistor R1 is with the inductance L1's
One end is connected, and the other end of the inductance L1 is connected with the antennal interface 400.
It should be noted that first resistor R1 is decoupling resistance, for carrying out decoupling after thunderbolt.
In the present embodiment, the inductance L1 is air core inductor.The effect of the inductance, which rises, prevents GPS/BD train of signals to direct current
Effect on source of stable pressure 500, and after signal antenna is struck by lightning, carry out decoupling.
Further, the first Transient Suppression Diode TVS1 is unidirectional Transient Suppression Diode, first transient state
Suppress diode TVS1 plus earth, negative electrode and the Schottky diode D1 of the first Transient Suppression Diode TVS1
Negative electrode connection.
When direct-flow voltage regulation source 500 is struck by lightning by negative sense to be impacted, GND is high voltage, and GPS/BD antennal interfaces 400 are low electricity
Pressure, if from two-way TVS, in negative sense surge, being the GND of direct-flow voltage regulation source 500 to the output end of direct-flow voltage regulation source 500
Between have the high residual voltage of a comparison, this residual voltage there is a possibility that direct-flow voltage regulation source 500 is damaged, therefore the utility model will be two-way
TVS be changed to unidirectional TVS, make suitable bias-voltage 0.7V or so that negative sense surge residual voltage is TVS, so as to realize direct-flow voltage regulation source 500
Protection.
Fig. 1 is continued referring to, specifically, the aerial signal port protection circuit 200 includes the first electric capacity C1 and second
Transient Suppression Diode TVS2；The first end of the first electric capacity C1 is connected with the antennal interface 400, the first electric capacity C1
The second end be connected with aerial signal input port 600；The first end of the second Transient Suppression Diode TVS2 and described the
One electric capacity C1 the second end connection, the second end ground connection of the second Transient Suppression Diode TVS2.
It should be noted that for the protection of GPS/BD antennal interfaces 400, a high pressure blocking electricity is employed in circuit
Hold, i.e. the first electric capacity C1.In the present embodiment, the first electric capacity C1 capacitance is 10pF, pressure-resistant to be more than 500V.Second transient state suppresses two
Pole pipe TVS2 is two-way Transient Suppression Diode.Its mesohigh capacitance is mainly decoupling effect, prevents thunderbolt energy from passing through
Late-class circuit, and then damage chip.Gas-discharge tube G1, which is mainly, carries out primary protection, and the second Transient Suppression Diode TVS2
Secondary protection is mainly carried out, two-stage protection is formed.
The utility model also proposes a kind of lightning protection device, and the lightning protection device includes above-mentioned lightning protection circuit, lightning protection electricity
The concrete structure on road is with reference to above-described embodiment, because this lightning protection device employs whole technical schemes of above-mentioned all embodiments, because
This all beneficial effect that at least technical scheme with above-described embodiment is brought, this is no longer going to repeat them.
The utility model also proposes a kind of electronic equipment, the electronic equipment include above-mentioned lightning protection device, the lightning protection device it is specific
Structure is with reference to above-described embodiment, because this electronic equipment employs whole technical schemes of above-mentioned all embodiments, therefore at least
All beneficial effects that technical scheme with above-described embodiment is brought, this is no longer going to repeat them.
Wherein, the electronic equipment can be the communication equipment of outdoor belt GPS/BD antennas.
Preferred embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited,
It is every under inventive concept of the present utility model, the equivalent structure made using the utility model specification and accompanying drawing content is become
Change, or directly/be used in other related technical fields indirectly and be included in scope of patent protection of the present utility model.
Claims (8)
1. a kind of lightning protection circuit, it is characterised in that including power port protection circuit, aerial signal port protection circuit and
Discharge circuit, the aerial signal port protection circuit is connected with antennal interface；Power port protection circuit is connected to the day
Between line interface and direct-flow voltage regulation source；The discharge circuit is connected with the antennal interface；
The power port protection circuit includes Schottky diode, the first Transient Suppression Diode and decoupling circuit；Xiao
The anode of special based diode is connected with the direct-flow voltage regulation source, the negative electrode of the Schottky diode and the one of the decoupling circuit
End connection, the other end of the decoupling circuit is connected with the antennal interface, the first end of first Transient Suppression Diode
It is connected with the negative electrode of the Schottky diode, the second end ground connection of the first Transient Suppression Diode.
2. lightning protection circuit as claimed in claim 1, it is characterised in that the discharge circuit is a gas-discharge tube.
3. lightning protection circuit as claimed in claim 1, it is characterised in that the decoupling circuit includes first resistor and electricity
Sense, the first end of the first resistor is connected with the negative electrode of first Transient Suppression Diode, and the second of the first resistor
End is connected with one end of the inductance, and the other end of the inductance is connected with the antennal interface.
4. lightning protection circuit as claimed in claim 3, it is characterised in that the inductance is air core inductor.
5. lightning protection circuit as claimed in claim 1, it is characterised in that first Transient Suppression Diode is unidirectional wink
State suppress diode, the plus earth of first Transient Suppression Diode, the negative electrode of first Transient Suppression Diode with
The negative electrode connection of the Schottky diode.
6. lightning protection circuit as claimed in claim 1, it is characterised in that the signal port protection circuit includes the first electricity
Hold and the second Transient Suppression Diode；The first end of first electric capacity is connected with the antennal interface, first electric capacity
Second end is connected with aerial signal input port；The of the first end of second Transient Suppression Diode and first electric capacity
Two ends are connected, the second end ground connection of second Transient Suppression Diode.
7. a kind of lightning protection device, it is characterised in that the lightning protection device includes lightning protection as claimed in any one of claims 1 to 6
Circuit.
8. a kind of electronic equipment, it is characterised in that the electronic equipment includes lightning protection device as claimed in claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720314381.XU CN206595710U (en) | 2017-03-28 | 2017-03-28 | Lightning protection circuit, lightning protection device and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720314381.XU CN206595710U (en) | 2017-03-28 | 2017-03-28 | Lightning protection circuit, lightning protection device and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206595710U true CN206595710U (en) | 2017-10-27 |
Family
ID=60122276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720314381.XU Active CN206595710U (en) | 2017-03-28 | 2017-03-28 | Lightning protection circuit, lightning protection device and electronic equipment |
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| Country | Link |
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| CN (1) | CN206595710U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769183A (en) * | 2017-11-14 | 2018-03-06 | 维沃移动通信有限公司 | surge protection device, method and mobile terminal |
| CN110401181A (en) * | 2019-07-02 | 2019-11-01 | 浙江大华技术股份有限公司 | A kind of surging protection circuit |
| CN110994204A (en) * | 2019-12-30 | 2020-04-10 | 深圳市有方科技股份有限公司 | External antenna circuit and external antenna device |
| CN111404610A (en) * | 2020-03-24 | 2020-07-10 | 中航光电科技股份有限公司 | Remote system of satellite navigation signal |
| US11764569B2 (en) | 2019-07-02 | 2023-09-19 | Zhejiang Dahua Technology Co., Ltd. | Electrical surge protection circuits |
-
2017
- 2017-03-28 CN CN201720314381.XU patent/CN206595710U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769183A (en) * | 2017-11-14 | 2018-03-06 | 维沃移动通信有限公司 | surge protection device, method and mobile terminal |
| CN107769183B (en) * | 2017-11-14 | 2019-07-26 | 维沃移动通信有限公司 | Surge protection device, method and mobile terminal |
| CN110401181A (en) * | 2019-07-02 | 2019-11-01 | 浙江大华技术股份有限公司 | A kind of surging protection circuit |
| CN110401181B (en) * | 2019-07-02 | 2022-03-01 | 浙江大华技术股份有限公司 | Surge protection circuit |
| US11764569B2 (en) | 2019-07-02 | 2023-09-19 | Zhejiang Dahua Technology Co., Ltd. | Electrical surge protection circuits |
| CN110994204A (en) * | 2019-12-30 | 2020-04-10 | 深圳市有方科技股份有限公司 | External antenna circuit and external antenna device |
| CN110994204B (en) * | 2019-12-30 | 2021-05-18 | 深圳市有方科技股份有限公司 | External antenna circuit and external antenna device |
| CN111404610A (en) * | 2020-03-24 | 2020-07-10 | 中航光电科技股份有限公司 | Remote system of satellite navigation signal |
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