CN103683261A - Optical transceiver equipotential arrester - Google Patents
Optical transceiver equipotential arrester Download PDFInfo
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- CN103683261A CN103683261A CN201310746266.6A CN201310746266A CN103683261A CN 103683261 A CN103683261 A CN 103683261A CN 201310746266 A CN201310746266 A CN 201310746266A CN 103683261 A CN103683261 A CN 103683261A
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Abstract
The invention discloses an optical transceiver equipotential arrester, comprising a power system surge overvoltage equipotential processing circuit connected between the live wire and null wire of a power, a signal system surge overvoltage equipotential processing circuit connected between the cable core and shielding layer of a signal wire, and a fault warning and indicating circuit, wherein the power system surge overvoltage equipotential processing circuit comprises a gas discharge tube and a piezoresistor; the problem about wire protection of cable television optical transceiver is solved, and the technical challenge is overcome by the equipotential equipotential protection technology. When in use, the optical transceiver equipotential arrester is directly matched, thus being convenient and rapid to mount and maintain; cost for excavating large area of ground to reduce grounding resistance in the surge protection of the optical transceiver is saved, steel resources are saved, and waste by repetition is avoided.
Description
Technical field
The present invention relates to a kind of optical transmitter and receiver equipotential arrester.
Background technology
Broadcasting and TV cable TV network circuit covers rural area, city every family, cable TV optical transmitter and receiver application quantity in video line is very large, but its mounting condition is limited, is mostly arranged in stairs port, in wall rainproof box, road limit, community, rural area are mainly placed under eaves, electric pole etc.There is no good shielding protection, how nearby its supply line power taking, and from stairs port or in the majority from electric pole power taking, electricity consumption is also lack of standardization, and circuit does not have shielding measure yet.The protective earthing of optical transmitter and receiver is simultaneously mostly unsettled, because in community, city, road surface sclerosis cannot be excavated, rural area electric pole hangs ground connection difficulty.Grounding requirement resistance that the most difficult is will arrive 4 ohm of Anti-surging effects could be more obvious, so be badly in need of a equipotential arrester that does not rely on earth resistance, this equipotential arrester can address the above problem.
Summary of the invention
The deficiency existing for solving prior art, the invention discloses a kind of optical transmitter and receiver equipotential arrester, by equipotential carrying out surge protection technology, realizes a difficult problem for cable TV optical transmitter and receiver line protection, the technical barrier of capturing.
For achieving the above object, concrete scheme of the present invention is as follows:
An optical transmitter and receiver equipotential arrester, comprises the power-supply system overvoltage surge equipotential treatment circuit being connected between power firestreak, zero line, is connected to the cable core of holding wire and the signal system overvoltage surge equipotential treatment circuit between screen;
When surge produces, optical transmitter and receiver electric supply system enters the power interface of lightning arrester, power-supply system overvoltage surge equipotential treatment circuit is realized between phase line and zero line, the full guard between phase line and protection ground wire, adopted multistage varistor device all to press, making does not have potential difference between the phase line of electric power system and zero line;
Simultaneously; optical transmitter and receiver vision signal is through signal system overvoltage surge equipotential treatment circuit; between circuit screen and coaxial core, the vision signal of process is realized to multi-stage protection, adopt gas discharge tube all to press, allow and there is no potential difference between screen and cable core.
Described power-supply system overvoltage surge equipotential treatment circuit comprises piezo-resistance and gas discharge tube, between power circuit L and N, between power circuit N and PE and between PE and power circuit L, be provided with equalizer circuit, described equalizer circuit includes gas discharge tube, and gas discharge tube and a plurality of piezo-resistance being in parallel are in series.
Described signal system overvoltage surge equipotential treatment circuit comprises inductance, piezo-resistance, gas discharge tube and electric capacity, two signal ends are divided into two-way, one tunnel is connected with inductance, another road is connected with electric capacity, between two inductance, be also in series with another one inductance, between adjacent two inductance, be also provided with equalizer circuit, equalizer circuit comprises two piezo-resistances that are in parallel, piezo-resistance is also in parallel with electric capacity, and the common port of two equalizer circuits is connected with gas discharge tube.
On described equipotential arrester, be also provided with aluminium alloy guard shield.
The discharge voltage 70V-3KV of described gas discharge tube, discharging current 5KA-50KA.
Power-supply system overvoltage surge equipotential treatment circuit operation principle: when surge voltage invasion power circuit L or N, piezo-resistance R in high-impedance state and gas discharge tube GDT transient switching are realized all pressures to N and PE, forming equipotential all presses, simultaneously between live wire and zero line, between live wire and ground wire, between zero line and ground wire, all adopt equal circuit all to press, realize the equilibrium of moment, so just do not become potential difference, just can not produce large electric current.Therefore can protect the normal operation of rear end equipment.
Signal system overvoltage surge equipotential treatment circuit operation principle: during surge voltage invasion signal line coaxial cable, mutual inductor L produces induction reactance Xl for high frequency surge, the conducting speed that suppresses high frequency voltage, remainder high voltage is all pressed through the achieve a butt joint conducting equipotential in place of the transient switching of piezo-resistance R, gas discharge tube GDT punctures conducting simultaneously, the cable core of signal line, screen and device interior earth point form same current potential, realize the equilibrium of moment, so just do not become potential difference, just can not produce large electric current.Therefore can protect the normal operation of rear end equipment.
Power failure warning system comprises power supply input, then carries out common mode protection and differential mode protection, then power supply output, last lightning protection device fault detect.After power circuit suffers high seas bore bad, power-supply system cannot be exported by normal power supply, normal run indicator dump, and green indicating lamp extinguishes, and switches and has battery powered red led, when red simultaneously.
Beneficial effect of the present invention:
The feature of patented product of the present invention is: 1 realizes light pick power-supply system and signal system composite type full protection, 2 protection principles adopt " all pressing " equipotential technology, realize multistep treatment mode, 3 its protection effects do not rely on earth resistance, whether there is ground connection can both well play protection effect, 4 performances: the strong residual voltage of protective capacities is low, 5 easy for installation, safeguard simple.
By equipotential carrying out surge protection technology, realize a difficult problem for cable TV optical transmitter and receiver line protection, the technical barrier of capturing.Directly supporting in application, convenient for installation and maintenance quick, saving optical transmitter and receiver protection surge needs dig on a wide area ground, reduces the cost of earth resistance, has saved steel resources, avoids repetition and waste.
Accompanying drawing explanation
Fig. 1 overall structure schematic diagram of the present invention;
Fig. 2 signal system overvoltage surge equipotential treatment system circuit diagram;
Fig. 3 power-supply system overvoltage surge equipotential handling principle figure;
Fig. 4 fault warning systematic schematic diagram.
Embodiment:
Below in conjunction with accompanying drawing, the present invention is described in detail:
As shown in Figure 1, a kind of optical transmitter and receiver equipotential arrester, comprise the power-supply system overvoltage surge equipotential treatment circuit being connected between power firestreak, zero line, be connected to the cable core of holding wire and the signal system overvoltage surge equipotential treatment circuit between screen;
When surge produces, optical transmitter and receiver electric supply system enters the power interface of lightning arrester, power-supply system overvoltage surge equipotential treatment circuit is realized between phase line and zero line, the full guard between phase line and protection ground wire, adopted multistage varistor device all to press, making does not have potential difference between the phase line of electric power system and zero line;
Simultaneously; optical transmitter and receiver vision signal is through signal system overvoltage surge equipotential treatment circuit; between circuit screen and coaxial core, the vision signal of process is realized to multi-stage protection, adopt gas discharge tube all to press, allow and there is no potential difference between screen and cable core.
As shown in Figure 3, power-supply system overvoltage surge equipotential treatment circuit comprises piezo-resistance and gas discharge tube, between power circuit L and N, between power circuit N and PE and between PE and power circuit L, be provided with equalizer circuit, described equalizer circuit includes gas discharge tube, and gas discharge tube and a plurality of piezo-resistance being in parallel are in series.
As shown in Figure 2, described signal system overvoltage surge equipotential treatment circuit comprises inductance, piezo-resistance, gas discharge tube and electric capacity, two signal ends are divided into two-way, one tunnel is connected with inductance, and another road is connected with electric capacity, between two inductance, is also in series with another one inductance, between adjacent two inductance, be also provided with equalizer circuit, equalizer circuit comprises two piezo-resistances that are in parallel, and piezo-resistance is also in parallel with electric capacity, and the common port of two equalizer circuits is connected with gas discharge tube.
On equipotential arrester, be also provided with aluminium alloy guard shield.The discharge voltage 70V-3KV of gas discharge tube, discharging current 5KA-50KA.
Power-supply system overvoltage surge equipotential treatment circuit operation principle: when surge voltage invasion power circuit L or N, piezo-resistance R in high-impedance state and gas discharge tube GDT transient switching are realized all pressures to N and PE, forming equipotential all presses, simultaneously between live wire and zero line, between live wire and ground wire, between zero line and ground wire, all adopt equal circuit all to press, realize the equilibrium of moment, so just do not become potential difference, just can not produce large electric current.Therefore can protect the normal operation of rear end equipment.
Signal system overvoltage surge equipotential treatment circuit operation principle: during surge voltage invasion signal line coaxial cable, mutual inductor L produces induction reactance Xl for high frequency surge, the conducting speed that suppresses high frequency voltage, remainder high voltage is all pressed through the achieve a butt joint conducting equipotential in place of the transient switching of piezo-resistance R, gas discharge tube GDT punctures conducting simultaneously, the cable core of signal line, screen and device interior earth point form same current potential, realize the equilibrium of moment, so just do not become potential difference, just can not produce large electric current.Therefore can protect the normal operation of rear end equipment.
As shown in Figure 4, power failure warning system comprises power supply input, then carries out common mode protection and differential mode protection, then power supply output, last lightning protection device fault detect.After power circuit suffers high seas bore bad, power-supply system cannot be exported by normal power supply, normal run indicator dump, and green indicating lamp extinguishes, and switches and has battery powered red led, when red simultaneously.
Optical transmitter and receiver equipotential arrester comprises the power line lightning protection electrical pulse overvoltage circuit being connected between power firestreak, zero line, be connected to the cable core of holding wire and the netting twine lightning protection electrical pulse overvoltage circuit between screen, fault warning indicating circuit, relay indicating light, connecting interface and cable, aluminum alloy casing.By integrated, the communication and the compatibility of transmitting of various functions, realized the management upgrade of existing system (communication exchanges power unit), system reliability is increased greatly, reduced maintenance and construction cost, saved space resources.This product object is a kind of reasonable in design to be provided, can to eliminate the differential mode induction lightening between power line and holding wire, and differential mode voltage is controlled to the equipotential lightning protection device within the scope that equipment bears.
Optical transmitter and receiver equipotential arrester, it is widely used in the electric equipments such as safety monitoring.Include power supply discharge tube 3, power supply piezo-resistance and first signal discharge tube 4, secondary signal discharge tube 5 and the 3rd signal discharge tube 6, after described power supply discharge tube 3 and the series connection of power supply piezo-resistance, be connected between two poles; After first signal discharge tube 4 and 5 series connection of secondary signal discharge tube, be connected between signal end and earth terminal; Between the common port of the common port of power supply discharge tube 3 and power supply piezo-resistance and first signal discharge tube and secondary signal discharge tube, be connected with the piezo-resistance that forms current potential bridge.
For different environment for use requirements, above-mentioned discharge tube can be selected discharge voltage 70V-3KV, discharging current 5KA-50KA, and piezo-resistance can be selected the Multiple Types such as 13D150K, 14D463K, 20D571K.
Key of the present invention is the piezo-resistance R that forms current potential bridge setting up, and its major function is to eliminate the harm to electric equipment of overvoltage between power line and holding wire.
When surge produces, optical transmitter and receiver electric supply system enters the power interface of lightning arrester.By powering to optical transmitter and receiver again after equipotential protection system.Power supply equipotential surge protection system, adopts the principle of differential mode and common mode full guard to realize, and the full guard between phase line and zero line, between phase line and protection ground wire has adopted multistage varistor device all to press simultaneously.Allow and there is no potential difference between the phase line of electric power system and zero line, just do not become momentary pulse electric current, thus play the effect of safeguard protection, when surge pulse recovers normal condition later.
Described optical transmitter and receiver vision signal equipotential surge protection system, realizes multi-stage protection between the vision signal circuit screen of process and coaxial core.Adopt gas discharge tube all to press, allow and there is no potential difference between screen and cable core, play safeguard protection effect, when surge pulse recovers normal condition later.
Equipment normal power supply run indicator shows green light, and when protecting former device to be damaged or circuit is obstructed, indicator light shows red.
Claims (5)
1. an optical transmitter and receiver equipotential arrester, it is characterized in that, comprise the power-supply system overvoltage surge equipotential treatment circuit being connected between power firestreak, zero line, be connected to the cable core of holding wire and the signal system overvoltage surge equipotential treatment circuit between screen;
When surge produces, optical transmitter and receiver electric supply system enters the power interface of lightning arrester, power-supply system overvoltage surge equipotential treatment circuit is realized between phase line and zero line, the full guard between phase line and protection ground wire, adopted multistage varistor device all to press, making does not have potential difference between the phase line of electric power system and zero line;
Simultaneously; optical transmitter and receiver vision signal is through signal system overvoltage surge equipotential treatment circuit; between circuit screen and coaxial core, the vision signal of process is realized to multi-stage protection, adopt gas discharge tube all to press, allow and there is no potential difference between screen and cable core.
2. a kind of optical transmitter and receiver equipotential arrester as claimed in claim 1, it is characterized in that, described power-supply system overvoltage surge equipotential treatment circuit comprises piezo-resistance and gas discharge tube, between power circuit L and N, between power circuit N and PE and between PE and power circuit L, be provided with equalizer circuit, described equalizer circuit includes gas discharge tube, and gas discharge tube and a plurality of piezo-resistance being in parallel are in series.
3. a kind of optical transmitter and receiver equipotential arrester as claimed in claim 1, it is characterized in that, described signal system overvoltage surge equipotential treatment circuit comprises inductance, piezo-resistance, gas discharge tube and electric capacity, two signal ends are divided into two-way, one tunnel is connected with inductance, another road is connected with electric capacity, between two inductance, be also in series with another one inductance, between adjacent two inductance, be also provided with equalizer circuit, equalizer circuit comprises two piezo-resistances that are in parallel, piezo-resistance is also in parallel with electric capacity, and the common port of two equalizer circuits is connected with gas discharge tube.
4. a kind of optical transmitter and receiver equipotential arrester as claimed in claim 1, is characterized in that, is also provided with aluminium alloy guard shield on described equipotential arrester.
5. a kind of optical transmitter and receiver equipotential arrester as claimed in claim 1, is characterized in that, the discharge voltage 70V-3KV of described power supply discharge tube and signal discharge tube, discharging current 5KA-50KA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310746266.6A CN103683261A (en) | 2013-12-30 | 2013-12-30 | Optical transceiver equipotential arrester |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310746266.6A CN103683261A (en) | 2013-12-30 | 2013-12-30 | Optical transceiver equipotential arrester |
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| CN103683261A true CN103683261A (en) | 2014-03-26 |
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| CN201310746266.6A Pending CN103683261A (en) | 2013-12-30 | 2013-12-30 | Optical transceiver equipotential arrester |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105375457A (en) * | 2014-08-25 | 2016-03-02 | 潍坊学院 | LED streetlight four-stage lightning protection module |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2798388Y (en) * | 2005-05-24 | 2006-07-19 | 四川中光高技术研究所有限责任公司 | Electric source signal combined lightning protector |
| US20060262478A1 (en) * | 2005-05-20 | 2006-11-23 | Nisar Chaudhry | Surge protected broadband power line communication system |
| CN201733086U (en) * | 2010-05-24 | 2011-02-02 | 广西地凯科技有限公司 | Two-port surge protection device for separation and protection of wired television feed signals |
-
2013
- 2013-12-30 CN CN201310746266.6A patent/CN103683261A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060262478A1 (en) * | 2005-05-20 | 2006-11-23 | Nisar Chaudhry | Surge protected broadband power line communication system |
| CN2798388Y (en) * | 2005-05-24 | 2006-07-19 | 四川中光高技术研究所有限责任公司 | Electric source signal combined lightning protector |
| CN201733086U (en) * | 2010-05-24 | 2011-02-02 | 广西地凯科技有限公司 | Two-port surge protection device for separation and protection of wired television feed signals |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105375457A (en) * | 2014-08-25 | 2016-03-02 | 潍坊学院 | LED streetlight four-stage lightning protection module |
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Application publication date: 20140326 |
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