CN101478175A - Power supplier for cable television network - Google Patents
Power supplier for cable television network Download PDFInfo
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- CN101478175A CN101478175A CNA2009100101035A CN200910010103A CN101478175A CN 101478175 A CN101478175 A CN 101478175A CN A2009100101035 A CNA2009100101035 A CN A2009100101035A CN 200910010103 A CN200910010103 A CN 200910010103A CN 101478175 A CN101478175 A CN 101478175A
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Abstract
The invention discloses a cable TV network power supply device which comprises a standard control circuit, a main 220/60V transformer, an output control circuit, a detection and interlocking control circuit, an interactive voltage detection current, a current detection circuit, a shaping and amplifying circuit, a three-phase automatic switching circuit, a three-phase sampling circuit and a time delay control circuit, wherein the three-phase automatic switching circuit is respectively connected with a three-phase power supply, the main 220/60V transformer and the standard control circuit, and the standard control circuit is provided with four CD4081 digital integrated circuits for finishing four logic processing functions with a gate circuit. The self-locking and mutual-locking functions of the power supply device and the self-locking and mutual-locking function in the multi-power supply combined power supply system are realized through the combination of all the unit circuits, the reliability of power supply of the cable TV network is enhanced, the invention has the functions of lightning protection and surging prevention, the volume and the cost are reduced by one half, the weight is reduced by two thirds, and the invention is the ideal the power supply device for the present cable TV network.
Description
Technical field
The present invention relates to a kind of charger, particularly a kind of power supplier for cable television network.
Background technology
General charger is that single phase power supply, technology are simple mostly, less reliable to the cable TV network power supply, but along with the increase that inserts the power supply number of phases, fail safe, detectability and the control technology difficulty of its work increase greatly, and general electrical equipment coupled circuit and analog circuit are difficult to realize above-mentioned purpose.The big way incessanly wired company of cable TV network share began to produce a kind of " charger at random " of interaction function at random that have in 1997, and this charger comprises that control safety circuit, transformer, output control circuit, self check are examined mutually, self-locking interlocking and short-circuit protection control circuit.When this charger uses, in certain zone, select two or more supply terminals to insert cable television network simultaneously, as the device of the automatic power at random outage of place's supply terminals, the device of automatic power at random of another place's supply terminals detects immediately, changes power supply state automatically over to.This supply power mode is reliable, can choose at random the installation site, chooses at random the power supply access point, construction install convenience.But this charger adopts the magnetic saturation transformer, produces bigger noise pollution, allows community resident be difficult to accept.Along with the development of cable TV technology, the upgrading of power network and the development of digital television techniques, its drawback is more and more obvious, show as mainly that volume is big, weight is big, noise pollution is big, backward in technique, cost is high, can not adapt to the needs of modern cable TV network development.
Summary of the invention
Be to solve the problems referred to above that prior art exists, the present invention to design a kind ofly have that volume is little, in light weight, noise pollution is little, multi-functional, the lightning protection characteristic is good, reliability is high power supplier for cable television network.
To achieve these goals, technical scheme of the present invention is as follows: a kind of power supplier for cable television network, comprise the standardization control circuit, main 220/60V transformer, output control circuit, detect the interlocking control circuit, interactive voltage detecting circuit, current detection circuit, shaping amplification circuit, also comprise the three-phase automatic switch-over circuit, the three-phase sample circuit, the time delay control circuit, described three-phase automatic switch-over circuit respectively with three phase mains, main 220/60V transformer links to each other with the standardization control circuit, described output control circuit respectively with main 220/60V transformer, detecting the interlocking control circuit links to each other with the standardization control circuit, described interactive voltage detecting circuit links to each other with the standardization control circuit with detection interlocking control circuit respectively, described current detection circuit links to each other with shaping amplification circuit with main 220/60V transformer respectively, described time delay control circuit links to each other with the standardization control circuit with shaping amplification circuit respectively, and described three-phase sample circuit links to each other with the standardization control circuit with three phase mains respectively.
Standardization control circuit of the present invention is to have 4 AND circuit can finish the CD4081 digital integrated circuit of 4 logical process functions.
Main 220/60V transformer of the present invention is E type transformer or toroidal transformer.
Three-phase automatic switch-over circuit of the present invention and main 220/60V transformer comprise the zinc oxide pressure-sensitive lightning protection component respectively.
Main 220/60V transformer of the present invention and output control circuit comprise anti-surge element respectively.
Three-phase sample circuit of the present invention comprises comparison amplifying circuit LM324.
Output control circuit of the present invention comprises digital circuit ULN2003.
Three-phase sample circuit of the present invention comprises three independently voltage transformers.
Compared with prior art, the present invention has following beneficial effect:
1, because the present invention has increased the access function of single-phase, two-phase, three phase mains, the three unities or sub-district be can independently be installed in and two-phase, three-phase electricity access except that single-phase inserted, improved the reliability of should the zone cable network powering.The present invention has adopted heterogeneous power supply and Liang Tai and many access waies more than two at random, greatly reduces the power failure that the causes influence of outer power supply network fault.
2, because circuit design of the present invention becomes three independently three-phase control circuit boards; as breaking down in the circuit; himself protective circuit separable with being connected of integrated circuit; automatically be transformed on the control circuit of other normal phase by independently detecting with delay separately; can realize the inherent functional reliability of this charger, single phase power supply adopt with other mutually and the mode that connects can realize above-mentioned effect equally.
3, because the present invention has the overload protection function and the short-circuit protection function of overcurrent, overvoltage, the overload reaction time is less than 3ms.
4,, can automatically recover after making network power supply device overload or short-circuit protection quit work because the present invention has designed the delay automatic reset circuit.
5, because the present invention has used digital gate circuit CD4081, when adopting two and the online power supply of a plurality of power supply unit basis needs, can automatically switch, promptly interactive interlocking, principle is like bistable circuit.
6, because the present invention can be according to automatic testing result, major-minor power supply each other at random, place's power supply has a power failure, and another place's power supply provides immediately, guarantees the reliable continuously of network electricity consumption.
7, because the zinc oxide pressure-sensitive lightning protection component is equipped with in the present invention, link to each other, behind the access ground wire, can have lightning protection function with each power lead.
8, because the present invention all is added with anti-surge device between electric power introducing and the power supply output line to network 60V, this response device time has inhibit feature to surge voltage soon, thereby the equipment in the network that guarantees is avoided superpotential infringement.
9, because the present invention has adopted new components and parts and structure, and volume has reduced half, and weight has reduced 2/3rds, cost has also reduced half.
Description of drawings
The present invention is 1 of drawings attached only, wherein:
Fig. 1 is the schematic diagram of power supplier for cable television network.
Among the figure: 1, three phase mains, 2, three-phase automatic switch-over circuit, 3, main 220/60V transformer, 4, output control circuit, 5, detect the interlocking control circuit, 6, three-phase sample circuit, 7, standardization control circuit, 8, current detection circuit, 9, shaping amplification circuit, 10, time delay control circuit, 11, interactive voltage detecting circuit.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further.As shown in Figure 1, a kind of power supplier for cable television network, comprise standardization control circuit 7, main 220/60V transformer 3, output control circuit 4, detect interlocking control circuit 5, interactive voltage detecting circuit 11, current detection circuit 8, shaping amplification circuit 9, three-phase automatic switch-over circuit 2, three-phase sample circuit 6, time delay control circuit 10, described three-phase automatic switch-over circuit 2 respectively with three phase mains 1, main 220/60V transformer 3 links to each other with standardization control circuit 7, described output control circuit 4 respectively with main 220/60V transformer 3, detecting interlocking control circuit 5 links to each other with standardization control circuit 7, described interactive voltage detecting circuit 11 links to each other with standardization control circuit 7 with detection interlocking control circuit 5 respectively, described current detection circuit 8 links to each other with shaping amplification circuit 9 with main 220/60V transformer 3 respectively, described time delay control circuit 10 links to each other with standardization control circuit 7 with shaping amplification circuit 9 respectively, and described three-phase sample circuit 6 links to each other with standardization control circuit 7 with three phase mains 1 respectively.Described standardization control circuit 7 is to have 4 AND circuit can finish the CD4081 digital integrated circuit of 4 logical process functions.Described main 220/60V transformer 3 is E type transformers.Described three-phase automatic switch-over circuit 2 and main 220/60V transformer 3 comprise the zinc oxide pressure-sensitive lightning protection component respectively.Described main 220/60V transformer 3 and output control circuit 4 comprise anti-surge element respectively.Described three-phase sample circuit 6 comprises comparison amplifying circuit LM324.Described output control circuit 4 comprises digital circuit ULN2003.Described three-phase sample circuit 6 comprises three independently voltage transformers.
Main 220/60V transformer 3 of the present invention also can be a toroidal transformer.
That the present invention has increased is single-phase, the access function of two-phase, three phase mains, can independently be installed in the three unities or sub-district and insert two-phase, three-phase electricity access except that single-phase, to improve the reliability that this zone cable network is powered.Also available above-mentioned access way combination interactive access way at random reaches more powerful reliability power supply.In a word, because the compatibility that supply power mode of the present invention inserts and various, installing and using on the net at cable TV can be more convenient, and power supply also can be more reliable.
Logical process of the present invention adopts the CD4081 digital integrated circuit, establishes 42 input AND circuit in it, and whether 4 outputs of may command to be, can realize " with " logic function, when promptly own 2 inputs all are " 1 ", be output as " 1 "; Input has 1 or 2 " 0 ", is output as " 0 ", and logical relation is Y=AB.Owing in the CD4081 4 AND circuit are arranged, can finish 4 logical process functions.This circuit has been realized interlocking between three-phase electricity, the logical process of examining mutually.
Claims (8)
1, a kind of power supplier for cable television network, comprise standardization control circuit (7), main 220/60V transformer (3), output control circuit (4), detect interlocking control circuit (5), interactive voltage detecting circuit (11), current detection circuit (8), shaping amplification circuit (9), it is characterized in that: also comprise three-phase automatic switch-over circuit (2), three-phase sample circuit (6), time delay control circuit (10), described three-phase automatic switch-over circuit (2) respectively with three phase mains (1), main 220/60V transformer (3) links to each other with standardization control circuit (7), described output control circuit (4) respectively with main 220/60V transformer (3), detecting interlocking control circuit (5) links to each other with standardization control circuit (7), described interactive voltage detecting circuit (11) links to each other with standardization control circuit (7) with detection interlocking control circuit (5) respectively, described current detection circuit (8) links to each other with shaping amplification circuit (9) with main 220/60V transformer (3) respectively, described time delay control circuit (10) links to each other with standardization control circuit (7) with shaping amplification circuit (9) respectively, and described three-phase sample circuit (6) links to each other with standardization control circuit (7) with three phase mains (1) respectively.
2, power supplier for cable television network according to claim 1 is characterized in that: described standardization control circuit (7) is to have 4 AND circuit can finish the CD4081 digital integrated circuit of 4 logical process functions.
3, power supplier for cable television network according to claim 1 is characterized in that: described main 220/60V transformer (3) is E type transformer or toroidal transformer.
4, power supplier for cable television network according to claim 1 is characterized in that: described three-phase automatic switch-over circuit (2) and main 220/60V transformer (3) comprise the zinc oxide pressure-sensitive lightning protection component respectively.
5, power supplier for cable television network according to claim 1 is characterized in that: described main 220/60V transformer (3) and output control circuit (4) comprise anti-surge element respectively.
6, power supplier for cable television network according to claim 1 is characterized in that: described three-phase sample circuit (6) comprises comparison amplifying circuit LM324.
7, power supplier for cable television network according to claim 1 is characterized in that: described output control circuit (4) comprises digital circuit ULN2003.
8, power supplier for cable television network according to claim 1 is characterized in that: described three-phase sample circuit (6) comprises three independently voltage transformers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100101035A CN101478175A (en) | 2009-01-14 | 2009-01-14 | Power supplier for cable television network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100101035A CN101478175A (en) | 2009-01-14 | 2009-01-14 | Power supplier for cable television network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101478175A true CN101478175A (en) | 2009-07-08 |
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ID=40838820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100101035A Pending CN101478175A (en) | 2009-01-14 | 2009-01-14 | Power supplier for cable television network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101478175A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102299703A (en) * | 2010-06-24 | 2011-12-28 | 快捷韩国半导体有限公司 | Interlock circuit and interlock system having the same |
| CN102299703B (en) * | 2010-06-24 | 2016-12-14 | 快捷韩国半导体有限公司 | Interlock circuit and the interlock system including this interlock circuit |
| WO2017049509A1 (en) * | 2015-09-23 | 2017-03-30 | 华为技术有限公司 | Power supply system and method for cable network, and related device |
-
2009
- 2009-01-14 CN CNA2009100101035A patent/CN101478175A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102299703A (en) * | 2010-06-24 | 2011-12-28 | 快捷韩国半导体有限公司 | Interlock circuit and interlock system having the same |
| CN102299703B (en) * | 2010-06-24 | 2016-12-14 | 快捷韩国半导体有限公司 | Interlock circuit and the interlock system including this interlock circuit |
| WO2017049509A1 (en) * | 2015-09-23 | 2017-03-30 | 华为技术有限公司 | Power supply system and method for cable network, and related device |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090708 |