CN105720550A - Explosion-proof data line circuit and explosion-proof data line with same - Google Patents
Explosion-proof data line circuit and explosion-proof data line with same Download PDFInfo
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- CN105720550A CN105720550A CN201610259154.1A CN201610259154A CN105720550A CN 105720550 A CN105720550 A CN 105720550A CN 201610259154 A CN201610259154 A CN 201610259154A CN 105720550 A CN105720550 A CN 105720550A
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- limiting
- data line
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- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 238000004880 explosion Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 6
- 230000001012 protector Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 239000002360 explosive Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000013528 metallic particle Substances 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/6608—Structural association with built-in electrical component with built-in single component
- H01R13/6625—Structural association with built-in electrical component with built-in single component with capacitive component
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/68—Structural association with built-in electrical component with built-in fuse
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R31/00—Coupling parts supported only by co-operation with counterpart
- H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
- H01R31/065—Intermediate parts for linking two coupling parts, e.g. adapter with built-in electric apparatus
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
Abstract
The invention provides an explosion-proof data line circuit applied to a USB data line. The data line circuit comprises a Vbus power line, a GND ground line, a D- signal line and a D+ signal line, wherein the Vbus power line and the GND ground line are connected to a power supply, the D+ signal line and the D+ signal line are used for data transmission line, the explosion-proof data line circuit also comprises a current-limiting protection module and a high-temperature protection module, the current-limiting protection module comprises a first current-limiting protection module, a second current-limiting protection module and a third current-limiting protection module, the first current-limiting protection module and the high-temperature protection module are connected to the Vbus power line in a series mode, the second current-limiting protection module is connected to the D- signal line, the third current-limiting protection module is connected to the D+ signal line, thus, the Vbus power line, the D- signal line and the D+ signal line are all endowed with explosion protection, and the USB explosion-proof data line with the circuit can be used for preventing from causing a fire or an explosion accident under conditions of a high temperature or a large current.
Description
Technical field
The present invention relates to explosion-proof electronic product scope, particularly relate to a kind of explosion-proof electronic product data line circuit and there is the explosion-proof data wire of this circuit.
Background technology
It is known that, data wire is as one of requisite accessory of consumer electronics product, its function essentially consists in and supports the use the charging realizing electronic product with power supply adaptor, or it is connected between electronic product the data transmission exchange to realize between electronic product, bring very convenient and practical Consumer's Experience for users.
But, in the working space of some special industries, such as there is the place of explosive dust atmosphere, the welding (weldering cigarette) of such as mechanical processing industry, polishing (metallic particles), spray paint (coating cloud) station or workshop, the metallurgical plant (metallic particles dust) of metallurgy industry；And there is the place of explosive gas atmosphere, such as chemical plant, coal mine, oil depot etc., when these places are properly functioning, air does not haves explosive dust or gas unavoidably.And data wire is during routine uses; or user to data wire improper use time; all would generally produce heating; and the problem of big electric current; if using data wire in these particular job environment above-mentioned, then it is not provided with the protection of any anti-explosion safety due to routine data line, when heating or big electric current produce; data wire may be produced on fire, thus cause the above-mentioned Code in Hazardous Special Locations that there is explosive dust or gas to produce explosion accident.
Even if additionally, in actual life, data wire charging is on fire, data wire improper use causes the report of blast to occur the most repeatedly, and therefore, the explosion-proof security of data wire has become more and more important.
Summary of the invention
On fire or the problem of blast may be caused in view of data above line during using, it is necessary to provide a kind of new explosion-proof data line circuit to be applied in explosion-proof data wire, make described explosion-proof data wire in the course of the work, described explosion-proof data line circuit can instantaneously sense self temperature and electric current, and when the operating temperature of described explosion-proof data wire and electric current exceed a certain safety value, make described explosion-proof data wire quit work by modes such as fusing or short circuits, thus be prevented effectively from the on fire and explosion issues that may thus cause.
The present invention is based on a kind of new technical scheme that considerations above proposes, it is an object of the invention to provide a kind of explosion-proof data line circuit, described explosion-proof data line circuit can solve the on fire or problem of blast that data wire of the prior art may cause present in its use process because of heating or big electric current.
The present invention also provides for a kind of explosion-proof data wire of USB, the explosion-proof data wire of described USB use described in explosion-proof data line circuit, it is possible to resolve the on fire or problem of blast that data wire of the prior art in use raises because of temperature or big electric current may cause.
For solving above-mentioned technical problem, the explosion-proof data line circuit that the present invention provides be the technical scheme is that
A kind of explosion-proof data line circuit; it is applied in USB data line; described data line circuit includes the Vbus power line for connecting power supply and GND earth lead; and two holding wires of D-and D+ for data transmission; described explosion-proof data line circuit includes a current-limiting protection module and a high temperature protection module; described current-limiting protection module includes that one first current-limiting protection module, one second current-limiting protection module and one the 3rd current-limiting protection module, described first current-limiting protection module and described high temperature protection module are connected in series on described Vbus power line；Described second current-limiting protection module is connected on described D-holding wire, and described 3rd current-limiting protection module is connected on described D+ holding wire.
The explosion-proof data wire of USB that the present invention provides be the technical scheme is that
A kind of explosion-proof data wire of USB, the explosion-proof data line circuit described in employing.
Compared with prior art, the having the technical effect that of present patent application
Based on the matching used data wire of the institute of the most each electronic product at present during it uses, usually can produce heating or the situation of big electric current, thus cause the on fire or problem of blast, the present invention provides a kind of explosion-proof data wire of USB, described explosion-proof data wire is in circuit design, it is configured with current-limiting protection module and high temperature protection module, high temperature or big electric current is produced when described explosion-proof data wire uses, described current-limiting protection module and described high temperature protection module are by generation effect, make described explosion-proof data wire termination work, thus effectively prevent the on fire or explosion accident that described explosion-proof data wire may cause when big electric current or high temperature, it is greatly improved the safety in utilization of described explosion-proof data wire.
Accompanying drawing explanation
Fig. 1 is the present invention explosion-proof data line circuit functional block diagram.
Fig. 2 is the circuit theory diagrams of the explosion-proof data line circuit of the present invention.
Detailed description of the invention
It is further described for the ease of the understanding of those skilled in the art, the explosion-proof data line circuit present invention proposed below with reference to accompanying drawing and the explosion-proof data wire of USB.
General USB data line generally includes 4 lines, respectively VBUS, D+, D-and GND, and wherein Vbus is the power line for power supply, D+ Yu D-is the differential signal line for carrying out data transmission, and GND is earth lead.The general utility functions of USB data line includes charging and data transmission, when electronic product detects that Vbus has power supply when, is taken as charging;If occurring periodic signal, usually AC signal or high-frequency signal on D+/D-holding wire, electronic product receives these signals, then it is assumed that carrying out data transmission at present.
It is described in detail below in conjunction with the embodiment of the explosion-proof data wire of Fig. 1 and Fig. 2 USB, each functional module of data line circuit explosion-proof to the present invention and the operation principle of described circuit.Fig. 1 is the present invention explosion-proof data line circuit functional block diagram, and Fig. 2 is the present invention explosion-proof data line circuit schematic diagram, and in Fig. 2, X1 and X5, X2 and X6, X3 and X7, X4 and X8 represent VBUS, D-, D+, GND respectively.F1 is charging current limiter electric fuse, and F2 is Thermal Cutoffs；F3 and F4 is input current-limiting fuse, F5 and F6 and outfan current-limiting fuse.
Explosion-proof data line circuit described in the present embodiment, it is applied in the explosion-proof data wire of USB, described data line circuit includes the Vbus power line for connecting power supply and GND earth lead, and two holding wires of D-and D+ for data transmission, described explosion-proof data line circuit includes current-limiting protection module 10 and a high temperature protection module 20, described current-limiting protection module 10 includes one first current-limiting protection module 101, one second current-limiting protection module 102 and one the 3rd current-limiting protection module 103, described first current-limiting protection module 101 is connected in series on described Vbus power line with described high temperature protection module 20；Described second current-limiting protection module 102 is connected on described D-holding wire, and described 3rd current-limiting protection module 103 is connected on described D+ holding wire.
Further, described current-limiting protection module 10 includes that a current-limiting fuse, described current-limiting fuse are welded in described explosion-proof data line circuit.
Being the work of Vbus and GND both threads in charging process in view of the explosion-proof data wire in embodiment, the electric current now flowing through Vbus is bigger；And in data transmission exchange process, Vbus plays power supply function, and D-and D+ both threads completes data transmission exchange, the electric current now flowing through D-and D+ both threads is less, in view of above difference, in order to described explosion-proof data line circuit is carried out the most suitable explosive-proof protector, consider the cost of different electric fuse simultaneously, the explosion-proof data wire of USB of the present invention is provided with the current-limiting fuse of bigger blowout current on Vbus power line, and on two holding wires of D-and D+, it is provided with the current-limiting fuse of less blowout current, thus on the basis of optimum cost is considered, achieve the most suitable circuit explosive-proof protector.
Preferably; described first current-limiting protection module 101 includes a charging current limiter electric fuse F1; described charging current limiter electric fuse F1 is welded on described Vbus power line; described second current-limiting protection module 102 includes an an input current-limiting fuse F3 and outfan current-limiting fuse F5; described D-holding wire includes a D-input and a D-outfan; described input current-limiting fuse F3 is positioned at described D-input, and described outfan current-limiting fuse F5 is positioned at described D-outfan.
When D-holding wire works; its input electric current always slightly greater than output end current; in order to ensure obtaining effective explosive-proof protector in described D-holding wire work process, heretofore described input current-limiting fuse F3 and described outfan current-limiting fuse F5 have employed the current-limiting fuse of different size.
Preferably, the blowout current F1 of the described charging current limiter electric fuse arranged on described Vbus power line is 1 peace, the described input current-limiting fuse F3 blowout current 100 milliamperes arranged on described D-holding wire, the blowout current 75 milliamperes of the described outfan current-limiting fuse F5 that described D-holding wire is arranged.
Owing to described D-holding wire is for data exchange transmission, by mainly AC signal or the high-frequency signal of described D-holding wire, simultaneously when described current-limiting fuse is connected to circuit, described current-limiting fuse has certain resistance.And in parallel with electric capacity in view of resistance so that direct current signal or low frequency signal are by difficult, AC signal or high-frequency signal then easily by.Thus, the present invention, by described input current-limiting fuse F3 and described outfan current-limiting fuse F5, is in parallel with electric capacity respectively, then is connected with described D-holding wire.
Preferably; described second current-limiting protection module 102 also includes one first series capacitance group and one second series capacitance group; after described input current-limiting fuse F3 and described first series capacitance group are connected in parallel; after described outfan current-limiting fuse F5 and described second series capacitance group are connected in parallel, link together with described D-holding wire.
The most described first series capacitance group of the embodiment of the present invention is that the electric capacity of three 0.068 μ F is connected in series with each other, and described second series capacitance group is that the electric capacity of three 0.1 μ F is connected in series with each other.
Same, described 3rd current-limiting protection module 103 is positioned on D+ holding wire, and described D+ holding wire and described D-holding wire support the use, and jointly realizes data transmission exchange, and therefore, described D+ holding wire is provided with the explosive-proof protector circuit identical with described D-holding wire.
Further; described 3rd current-limiting protection module 103 is also correspondingly arranged on an input current-limiting fuse F4 identical with a described second current-limiting protection module and outfan current-limiting fuse F6; described D+ holding wire includes a D+ input and a D+ outfan; described input current-limiting fuse F4 is positioned at described D+ input, and described outfan current-limiting fuse F6 is positioned at described D+ outfan.
In addition; described 3rd current-limiting protection module 103 is also correspondingly arranged on the one first series capacitance group identical with described second current-limiting protection module and one second series capacitance group; described input current-limiting fuse is connected in parallel with described first series capacitance group, and described outfan current-limiting fuse is connected in parallel with described second series capacitance group.
Owing to described D-with D+ holding wire supports the use jointly, therefore identical with the blowout current of the current-limiting fuse that D+ holding wire input is arranged at described D-holding wire input, i.e. F3 with F4 blowout current is identical, in like manner, F5 with F6 blowout current is the most identical, the most described input current-limiting fuse F4 blowout current is also 100 milliamperes, and the blowout current of described outfan current-limiting fuse F6 is also 75 milliamperes.
Same, after described input current-limiting fuse F4 is also connected in parallel with described first series capacitance group, after described outfan current-limiting fuse F6 and described second series capacitance group are connected in parallel, link together with described D+ holding wire.
In view of bigger owing to flowing through the electric current of described Vbus power line; the probability being easily caused described Vbus power line generation high temperature or big electric current is bigger; the embodiment of the present invention in addition to being provided with high current protection circuit, is also provided with protection circuit during high temperature on described Vbus power line.
Preferably, described high temperature protection module 20 includes that a Thermal Cutoffs F2, described Thermal Cutoffs F2 are connected in series with described charging current limiter electric fuse F1, and is positioned on described Vbus power line, and the fusing-off temperature of described Thermal Cutoffs is preferable when being 82 degrees Celsius.
In the embodiment that the present patent application is provided; it is to be understood that; it is desirable to provide a kind of explosion-proof data line circuit; described explosion-proof data line circuit is applied in an explosion-proof data wire of USB; the explosion-proof data wire of described USB is in the course of the work; if produce high temperature exothermic or big electric current because of certain reason, described current-limiting protection module and described high temperature protection module will produce explosive-proof protector effect, it is to avoid the on fire or explosion accident thus caused；In mentality of designing; difference in view of the current value flowing through Vbus, D-and D+ in the explosion-proof data line structure of described USB; in conjunction with actual; it is respectively provided with the current-limiting protection module of different current limliting blowout current; and be to be provided with high temperature protection module the most further at Vbus; thus the described explosion-proof data wire of USB is either in charging process, or in carrying out data transmission exchange process, effective explosive-proof protector can be obtained.
The above is only the better embodiment of the present invention, not the restriction to the present patent application.It should be pointed out that, for those skilled in the art, on the premise of without departing from mentality of designing of the present invention, any make with the thinking of the present invention replacement, improve or retouch, within being regarded as protection scope of the present invention.
Claims (11)
1. an explosion-proof data line circuit, it is applied in USB data line, described data line circuit includes the Vbus power line for connecting power supply and GND earth lead, and two holding wires of D-and D+ for data transmission, it is characterized in that: described explosion-proof data line circuit includes a current-limiting protection module and a high temperature protection module, described current-limiting protection module includes one first current-limiting protection module, one second current-limiting protection module and one the 3rd current-limiting protection module, described first current-limiting protection module and described high temperature protection module are connected in series on described Vbus power line；Described second current-limiting protection module is connected on described D-holding wire, and described 3rd current-limiting protection module is connected on described D+ holding wire.
Explosion-proof data line circuit the most as claimed in claim 1, it is characterised in that: described current-limiting protection module includes that a current-limiting fuse, described current-limiting fuse are welded in described explosion-proof data line circuit.
Explosion-proof data line circuit the most as claimed in claim 2; it is characterized in that: described first current-limiting protection module includes a charging current limiter electric fuse; described charging current limiter electric fuse is welded on described Vbus power line; described second current-limiting protection module includes an input current-limiting fuse and an outfan current-limiting fuse; described D-holding wire includes a D-input and a D-outfan; described input current-limiting fuse is positioned at described D-input, and described outfan current-limiting fuse is positioned at described D-outfan.
Explosion-proof data line circuit the most as claimed in claim 3; it is characterized in that: described second current-limiting protection module also includes one first series capacitance group and one second series capacitance group; described input current-limiting fuse is connected in parallel with described first series capacitance group, and described outfan current-limiting fuse is connected in parallel with described second series capacitance group.
Explosion-proof data line circuit the most as claimed in claim 4; it is characterized in that: described 3rd current-limiting protection module is also correspondingly arranged on an input current-limiting fuse identical with described second current-limiting protection module and an outfan current-limiting fuse; described D+ holding wire also includes a D+ input and a D+ outfan; described input current-limiting fuse is positioned at described D+ input, and described outfan current-limiting fuse is positioned at described D+ outfan.
Explosion-proof data line circuit the most as claimed in claim 5; it is characterized in that: described 3rd current-limiting protection module is also correspondingly arranged on the one first series capacitance group identical with described second current-limiting protection module and one second series capacitance group; described input current-limiting fuse is connected in parallel with described first series capacitance group, and described outfan current-limiting fuse is connected in parallel with described second series capacitance group.
Explosion-proof data line circuit the most as claimed in claim 6, it is characterised in that: the blowout current of described charging current limiter electric fuse is 1 peace, described input current-limiting fuse blowout current 100 milliamperes, the blowout current of described outfan current-limiting fuse 75 milliamperes.
Explosion-proof data line circuit the most as claimed in claim 7, it is characterised in that: described first series capacitance group is that the electric capacity of three 0.068 μ F is connected in series with each other, and described second series capacitance group is that the electric capacity of three 0.1 μ F is connected in series with each other.
Explosion-proof data line circuit the most as claimed in claim 1, it is characterised in that: described high temperature protection module includes that a Thermal Cutoffs, described Thermal Cutoffs are connected in series with described charging current limiter electric fuse, and is positioned on described Vbus power line.
Explosion-proof data line circuit the most as claimed in claim 9, it is characterised in that: the fusing-off temperature of described Thermal Cutoffs is 82 degrees Celsius.
11. 1 kinds of explosion-proof data wires of USB, it is characterised in that: the explosion-proof data wire of described USB uses the explosion-proof data line circuit as described in any one of claim 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610259154.1A CN105720550A (en) | 2016-04-25 | 2016-04-25 | Explosion-proof data line circuit and explosion-proof data line with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610259154.1A CN105720550A (en) | 2016-04-25 | 2016-04-25 | Explosion-proof data line circuit and explosion-proof data line with same |
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| Publication Number | Publication Date |
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| CN105720550A true CN105720550A (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610259154.1A Pending CN105720550A (en) | 2016-04-25 | 2016-04-25 | Explosion-proof data line circuit and explosion-proof data line with same |
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| CN (1) | CN105720550A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106295427A (en) * | 2016-08-09 | 2017-01-04 | 珠海溢思得瑞科技创新研究院有限公司 | Safety protection equipment, interface and nucleus equipment |
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| CN203607833U (en) * | 2013-10-25 | 2014-05-21 | 海能达通信股份有限公司 | An explosion-proof electric device |
| CN104134986A (en) * | 2014-08-14 | 2014-11-05 | 刘雨佳 | Two-way dual-mode 485 communication lightning protector |
| CN104410270A (en) * | 2014-08-26 | 2015-03-11 | 上海耀华称重系统有限公司 | Power supply circuit used in field of explosion-proof weighing instrument |
| CN204464983U (en) * | 2015-03-19 | 2015-07-08 | 苏州松田微电子有限公司 | Novel lightning protecting laptop circuit |
| CN205753336U (en) * | 2016-04-25 | 2016-11-30 | 深圳市宝尔爱迪科技有限公司 | Explosion-proof data line circuit and there is the explosion-proof data wire of this circuit |
Cited By (1)
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| CN106295427A (en) * | 2016-08-09 | 2017-01-04 | 珠海溢思得瑞科技创新研究院有限公司 | Safety protection equipment, interface and nucleus equipment |
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