CN204947586U - The smart machine lightning protection interface of intelligent transportation system - Google Patents
The smart machine lightning protection interface of intelligent transportation system Download PDFInfo
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- CN204947586U CN204947586U CN201520693857.6U CN201520693857U CN204947586U CN 204947586 U CN204947586 U CN 204947586U CN 201520693857 U CN201520693857 U CN 201520693857U CN 204947586 U CN204947586 U CN 204947586U
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Abstract
A kind of smart machine lightning protection interface of intelligent transportation system, comprise input port, output port and ground wire, the first discharge paths is connected with between described input port and ground wire, the second discharge paths is connected with between described output port and ground wire, time delay coordination circuits is also connected with between described input port and output port, described time delay coordination circuits is made up of inductance and Capacitance parallel connection, and the leakage current ability of described first discharge paths is greater than the second discharge paths.Adopt Smart Home lightning protection interface described in the utility model, can effectively prevent and reduce surge pulse overvoltage that the phenomenon such as startup and stopping due to the system switching on effect of external world's thunderbolt, electromagnetic interference etc. or internal system, perception and capacitive load causes and the harm that overcurrent is brought system equipment, meet books circulation amount, response time fast while achieve low residual voltage and filter with low insertion loss.
Description
Technical field
The utility model belongs to intelligent transportation apparatus field, relates to thunder resisting equipment, particularly the smart machine lightning protection interface of intelligent transportation system.
Background technology
Thunder and lightning average current be 3 Wan An training, maximum current can reach 30 Wan An training.The voltage of thunder and lightning is very high, is about 1 hundred million to 10 hundred million volt.: to communication system, thunder and lightning and other strong jamming cause that to undermine the consequence caused thus be serious, lightning protection will become the required measure ensureing lives and properties.
Lightening pulse by high energy low frequency component with have infiltrative high-frequency components and form, it acts on equipment mainly through two kinds of forms: one directly conducts thunder and lightning by metal pipe line or ground wire to cause damage equipment; Be with various coupled modes, the Lightning Electromagnetic Pulse of lightning channel and current by pass senses that metal pipe line or ground wire produce surge and cause a damage equipment, most thunder damages and is caused by this induction.For electronic message unit, harm mainly comes from the coupling energy of the Lightning Electromagnetic Pulse caused by thunder and lightning, the electrical surge produced by following three passages.1, metal pipe line passage, as the surge that running water pipe, power line, antenna feeder, holding wire, flying obstacle lamp lead etc. produce; 2, ground wire passage, earth potential is strikeed back; 3, spatial channel, the emittance of electromagnetic field.
Thunder and lightning general principle of releasing is released by the earth by the energy of thunder and lightning and Lightning Electromagnetic Pulse, and should meet level principle, namely many as far as possible, as far as possible excess energy was released before introducing communication system into.
The smart machine of intelligent transportation system is owing to have employed a large amount of electronic chip, low to high pressure thunderbolt resistivity, must adopt lightning protection measures.
Utility model content
The abnormal pressure caused from indirect lightning strike, antenna feeder exception and static discharge etc. in actual applications for protection intelligent home device destroys, and the utility model discloses the smart machine lightning protection interface of intelligent transportation system.
The smart machine lightning protection interface of intelligent transportation system described in the utility model, comprise input port, output port and ground wire, the first discharge paths is connected with between described input port and ground wire, be connected with the second discharge paths between described output port and ground wire, and the leakage current ability of described first discharge paths is greater than the second discharge paths; Time delay coordination circuits is also connected with between described input port and output port;
Described first discharge paths is in series by gas discharge switch and the first piezo-resistance, and described second discharge paths is in series by switching device and the second piezo-resistance; Wherein piezo-resistance connects ground wire, and the electric current handling capacity of the first piezo-resistance is better than the second piezo-resistance, in described first discharge paths, and the control end of the common node connecting valve device of gas discharge switch and the first piezo-resistance;
Described time delay coordination circuits is composed in parallel by inductance and delay capacitor.
Preferably, described switching device is NMOS tube.
Further, coupling capacitance is connected with between the source electrode of described NMOS tube and grid.
Preferably, described first piezo-resistance is that two 820KD14J resistor coupled in parallel form, and described second piezo-resistance is single 820KD14J resistance.
Preferably, the resonance frequency of described time delay coordination circuits is 10-100 million.
Preferably, between described first discharge paths, the second discharge paths, time delay coordination circuits and inner lead be copper conductor, and live width is not less than 100 microns.
Adopt Smart Home lightning protection interface described in the utility model, can effectively prevent and reduce surge pulse overvoltage that the phenomenon such as startup and stopping due to the system switching on effect of external world's thunderbolt, electromagnetic interference etc. or internal system, perception and capacitive load causes and the harm that overcurrent is brought system equipment, meet books circulation amount, response time fast while achieve low residual voltage and filter with low insertion loss.
Accompanying drawing explanation
Fig. 1 is a kind of embodiment schematic diagram of the smart machine lightning protection interface of intelligent transportation system described in the utility model;
In figure, Reference numeral name is called: IN-input port OUT-output port L-inductance C1-delay capacitor C2-coupling capacitance G-gas discharge switch M-switching device MR1-first piezo-resistance MR2-second piezo-resistance.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
Embodiment 1
The smart machine lightning protection interface of intelligent transportation system described in the utility model, comprise input port, output port and ground wire, the first discharge paths is connected with between described input port and ground wire, be connected with the second discharge paths between described output port and ground wire, and the leakage current ability of described first discharge paths is greater than the second discharge paths; Also be connected with time delay coordination circuits between described input port and output port, described time delay coordination circuits is made up of inductance and Capacitance parallel connection.
Described first discharge paths is in series by gas discharge switch and the first piezo-resistance, and described second discharge paths is in series by switching device and the second piezo-resistance; Wherein piezo-resistance connects ground wire, and the electric current handling capacity of the first piezo-resistance is better than the second piezo-resistance, in described first discharge paths, and the control end of the common node connecting valve device of gas discharge switch and the first piezo-resistance;
Described time delay coordination circuits is composed in parallel by inductance and delay capacitor.
The object of lightning protection circuit is the device stoping high-voltage great-current to directly act on internal system poor voltage withstand capability, and needing was released it by current drain path for this reason before abnormal pressure electric current arrives internal system port imports the earth.The utility model is after thunder and lightning enters input port IN from antenna feeder antenna, first high pressure triggers the first discharge paths conducting, big current is conducting to ground wire from the first discharge paths, time delay coordination circuits is by inductance L, delay capacitor C1 composes in parallel a resonant circuit, the resonance frequency of this resonant circuit is relevant with C1 capacitance product value to inductance, signal near resonance frequency is by after this resonant circuit, energy is attenuated to relatively large extent, by selecting suitable inductance and electric capacity, when making lightning strike signals arrive input port, stopped by resonant circuit time delay, in delay time section, the first discharge paths be triggered significantly is released, after resonant circuit, voltage and current before arrival output port OUT is significantly weakened all.
First discharge paths is while conducting is released; on first piezo-resistance MR1, voltage produces momentary spike; the switching device of the second discharge paths is triggered conducting; but the second discharge paths and the first discharge paths are due to the existence of gas discharge switch and switching device; certain conducting time delay must be had; after first discharge paths conducting in certain hour; to be released dump energy by triggering second branch road of releasing again; thus protecting the internal system device be connected with input port not destroy by high pressure, the second piezo-resistance MR2 plays moment suppression effect to the second discharge paths.
In the present embodiment, input port can be chosen as N-50K type impedance transformer, and described output port is N-50J type impedance transformer.When realizing impedance matching by impedance transformation, thus obtain maximum power delivery.
Embodiment 2
This gives a kind of embodiment of time delay coordination circuits.Time delay coordination circuits designing points is: do not hinder normal Signal transmissions during normal work, thunderbolt effectively can stop that time delay lightning strike signals arrived output port OUT before most of energy of being released by the first discharge paths, by possessing the current capacity of ampere level temporarily.The resonance frequency of time delay coordination circuits preferably should control in 10-100 million scope, avoids hindering radio band Signal transmissions, obtains certain time delay interval simultaneously and to release energy for the first discharge paths, and have certain skew allowance.
Select inductance L 1 in described time delay coordination circuits to be HVB822K102C2T for core inductance 2A-10 μ H-J φ 3.86 × 6.5-C-1, described delay capacitor C1 in the present embodiment, can above-mentioned requirements be met.
Embodiment 3
In the present embodiment, described switching device is NMOS tube, is connected with coupling capacitance C2 between the source electrode of described NMOS tube and grid, after increasing coupling capacitance C2, can trigger NMOS tube conducting faster.
In the present embodiment, described gas discharge switch G is gas discharge tube R158HT, and described first piezo-resistance is that two 820KD14J are formed in parallel, and described second piezo-resistance MOV3 is single 820KD14J.
In each embodiment above-mentioned, between described first discharge paths, the second discharge paths, time delay coordination circuits and inner lead be copper conductor, and live width is not less than 100 microns, to ensure the unobstructed to ground path electric discharge of thunder-strike current.
Previously described is each preferred embodiment of the present utility model, preferred implementation in each preferred embodiment is if not obviously contradictory or premised on a certain preferred implementation, each preferred implementation can stack combinations use arbitrarily, design parameter in described embodiment and embodiment is only the utility model proof procedure in order to clear statement utility model people, and be not used to limit scope of patent protection of the present utility model, scope of patent protection of the present utility model is still as the criterion with its claims, the equivalent structure change that every utilization specification of the present utility model and accompanying drawing content are done, in like manner all should be included in protection range of the present utility model.
Claims (6)
1. the smart machine lightning protection interface of intelligent transportation system, comprise input port, output port and ground wire, it is characterized in that, the first discharge paths is connected with between described input port and ground wire, be connected with the second discharge paths between described output port and ground wire, and the leakage current ability of described first discharge paths is greater than the second discharge paths; Time delay coordination circuits is also connected with between described input port and output port;
Described first discharge paths is in series by gas discharge switch and the first piezo-resistance, and described second discharge paths is in series by switching device and the second piezo-resistance; Wherein piezo-resistance connects ground wire, and the electric current handling capacity of the first piezo-resistance is better than the second piezo-resistance, in described first discharge paths, and the control end of the common node connecting valve device of gas discharge switch and the first piezo-resistance;
Described time delay coordination circuits is composed in parallel by inductance and delay capacitor.
2. the smart machine lightning protection interface of intelligent transportation system as claimed in claim 1, it is characterized in that, described switching device is NMOS tube.
3. the smart machine lightning protection interface of intelligent transportation system as claimed in claim 2, is characterized in that, be connected with coupling capacitance between the source electrode of described NMOS tube and grid.
4. the smart machine lightning protection interface of intelligent transportation system as claimed in claim 1, it is characterized in that, described first piezo-resistance is that two 820KD14J resistor coupled in parallel form, and described second piezo-resistance is single 820KD14J resistance.
5. the smart machine lightning protection interface of intelligent transportation system as claimed in claim 1, it is characterized in that, the resonance frequency of described time delay coordination circuits is 10-100 million.
6. the smart machine lightning protection interface of intelligent transportation system as claimed in claim 1, is characterized in that, between described first discharge paths, the second discharge paths, time delay coordination circuits and inner lead be copper conductor, and live width is not less than 100 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520693857.6U CN204947586U (en) | 2015-09-09 | 2015-09-09 | The smart machine lightning protection interface of intelligent transportation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520693857.6U CN204947586U (en) | 2015-09-09 | 2015-09-09 | The smart machine lightning protection interface of intelligent transportation system |
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| CN204947586U true CN204947586U (en) | 2016-01-06 |
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| CN201520693857.6U Expired - Fee Related CN204947586U (en) | 2015-09-09 | 2015-09-09 | The smart machine lightning protection interface of intelligent transportation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105162101A (en) * | 2015-09-09 | 2015-12-16 | 成都川睿科技有限公司 | Intelligent equipment lightning protection interface for intelligent transportation system |
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2015
- 2015-09-09 CN CN201520693857.6U patent/CN204947586U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105162101A (en) * | 2015-09-09 | 2015-12-16 | 成都川睿科技有限公司 | Intelligent equipment lightning protection interface for intelligent transportation system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20160909 |
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| CF01 | Termination of patent right due to non-payment of annual fee |