CN102403590B - There is the jockey of anti-electrolysis - Google Patents
There is the jockey of anti-electrolysis Download PDFInfo
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- CN102403590B CN102403590B CN201010275696.0A CN201010275696A CN102403590B CN 102403590 B CN102403590 B CN 102403590B CN 201010275696 A CN201010275696 A CN 201010275696A CN 102403590 B CN102403590 B CN 102403590B
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Abstract
A kind of jockey with anti-electrolysis, it applies in electronic installation, this electronic installation comprises a waterproof construction and an exposed area, internal circuit in waterproof construction operates in a standard logic current potential, and in the jockey of exposed area, detect pin be electrically connected to circuit for detecting and the voltage operating in below 1.23V, the electrolysis caused to prevent this detecting pin to be subject to moisture content.
Description
[technical field]
The present invention, about the element on a kind of electronic installation, particularly applies to the jockey in electronic installation with anti-electrolysis (electrolysiseffect) about one.
[background technology]
Palmtop computer, notebook computer and all types of portable electronic devices have been widely used in various application.The internal circuit element of these electronic installations is configured in the inner space of a housing, can be subject to protection, isolation to make internal circuit element.
In some application; such as military or some need be used in wet environment or be rich in moisture content environment, even leaching be placed in the medium field of water; possess water-proof function to make electronic installation or avoid being subject to the intrusion of outside moisture and undermine internal circuit element, therefore being protected with waterproof case or the housing with waterproof construction in the housing.
Inevitably, above-mentioned electronic installation necessarily has jockey (connector) and exposes to casing and be connected to carry out data transmission with extraneous electronic installation (externaldevice), such as USB jockey.As everyone knows, USB jockey interface is the input and output interfaces of a plug and play, when external USB element is inserted in USB jockey, automatically must be detected immediately, and carry out the transmission of data with external USB element.Therefore, these input and output interfaces have some pins and expose to casing, and are used for transmitting data and detecting the change (such as detecting external USB element whether to insert) of external environment state.
In other words, these electronic installations with special water-proof function are to reach the change can detecting external environment state, then must be provided with extend to waterproof case exposed area expose pin and as detecting pin, and the voltage of a logic of propositions current potential must be applied on this detecting pin, utilize the change of its logic level whether to insert to detect extraneous electronic installation.In general, the logic of propositions current potential that detecting pin applies is direct current 5V or 3V, to meet the output input signal current potential of most electronic installation.
For USB jockey, when detecting pin and not yet having detected the insertion of external USB element, detecting pin can maintain logic of propositions current potential, and other pin in USB jockey is then in open-circuit condition (opencircuit); Otherwise when detecting pin and having detected the insertion of external USB element, detecting pin can be modified as earthing potential, and other the pin in USB jockey then can provide signal, and and carries out data transmission between external USB element.
Consult shown in Fig. 1, it shows the system schematic of existing electronic installation.As shown in Figure 1; the housing 1 of one electronic installation 100 possesses water-proof function in order to protect all circuit elements in casing 1; that is housing 1 is a waterproof construction, and internal circuit 30 is arranged in housing 1, and it operates in standard logic current potential (Vcc).Moreover the region outside housing 1 is exposed area, that is exposed area is positioned at outside waterproof construction.
Moreover jockey 20 is arranged at exposed area.Jockey 20 includes some metallic pin, and it to be arranged in jockey 20 and to be electrically connected to internal circuit 30.Wherein, internal circuit 30 provides jockey 20 required voltage, and internal circuit 30 transmits data by jockey 20 with extraneous electronic installation.Moreover it has a standard logic current potential (Vcc) to have a detecting pin 22 in metallic pin, and is not provided voltage by internal circuit 30 under detecting metallic pin 24 normality beyond pin 22.
In Fig. 1, and metallic pin 24, detecting pin 22 are positioned at exposed area.In other words, detect pin 22 may soak and put in water or be placed in the environment being rich in moisture content.Moreover, detecting pin 22 is electrically connected to the first resistance R1 of casing 1 inside, and the first resistance R1 is connected between a standard logic current potential Vcc and detecting pin 22, first resistance R1 is as a pull-up resistor (pull-upresistor), it can make detecting pin 22 when not yet detecting extraneous electronic installation and inserting jockey 20, and the signal of detecting pin 22 is pulled to standard logic current potential Vcc.Wherein, standard logic current potential Vcc is typical 5V or 3V.
As shown in Figure 1, the detecting pin 22 of existing electronic installation 100 is when not yet having detected extraneous electronic installation and having inserted jockey 20, the signal of detecting pin 22 is pulled to standard logic current potential Vcc (5V or 3V) by the first resistance R1, meanwhile, the signal of this logic level Vcc also inputs internal circuit 30.That is, according to the signal receiving standard logic current potential Vcc, internal circuit 30 judges that the jockey 20 detecting pin 22 place not yet has extraneous electronic installation to insert.
Otherwise, detecting pin 22 is when having detected extraneous electronic installation and having inserted jockey 20, the signal of detecting pin 22 can by drop-down (pulldown) to earthing potential (0V), and meanwhile, this earthing potential (0V) also inputs internal circuit 30.Also be say, according to the signal of the earthing potential received (0V), internal circuit 30 judges that the jockey 20 at detecting pin 22 place has had extraneous electronic installation to insert.
But above-mentioned traditional design, is present in some problems when the application of reality.When the leaching of detecting pin 22 is put in water or when being placed in the environment being rich in moisture content, because the signal being applied to detecting pin 22 is standard logic current potential Vcc (5V or 3V).And the magnitude of voltage of standard logic current potential Vcc (5V or 3V) is under the condition of less than 25 degree Celsius, detecting pin 22 can produce a leakage current (leakagecurrent), and produces an electrolysis Response time (ElectromotiveForce).And the electrolysis electromotive force produced will make detecting pin 22 cause electrolysis (ElectrolysisEffect), and cause the signal potential detected pin 22 damage of material or produce mistake to be passed to internal circuit 30, make internal circuit 30 misjudgment.
[summary of the invention]
Therefore, an object of the present invention is for the electronic installation having detecting pin in jockey, a kind of jockey with anti-electrolysis is provided, when the leaching of detecting pin is put in water or when being placed in the environment being rich in moisture content, the generation of unlikely because electrolysis electromotive force, and make detecting pin cause the impaired or internal circuit misjudgment of electrolysis.
The present invention proposes a kind of jockey with anti-electrolysis, be applicable to an electronic installation, described electronic installation comprises a waterproof construction, one internal circuit, one circuit for detecting and an exposed area, described internal circuit is arranged in described waterproof construction, described exposed area is arranged at outside waterproof construction, and described jockey is arranged at described exposed area, wherein internal circuit provides jockey required voltage, and internal circuit transmits data by jockey with extraneous electronic installation, the described jockey with anti-electrolysis comprises some metallic pin, described metallic pin to be arranged in jockey and to provide electronic signal transmission, and there is in metallic pin a detecting pin, wherein, detecting pin continues the voltage being provided below 1.23V by internal circuit, and the metallic pin detected beyond pin is not provided voltage by internal circuit under normality, wherein, described circuit for detecting is electrically connected described detecting pin and continues circuit for detecting and differentiates whether detecting pin is electrically connected extraneous electronic installation, and when circuit for detecting differentiates that detecting pin is electrically connected extraneous electronic installation, send a notification signal and make to internal circuit internal circuit provide the metallic pin of voltage to detecting beyond pin.
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and coordinate accompanying drawing, be described in detail below.
[accompanying drawing explanation]
Fig. 1 illustrates the system schematic of existing electronic installation.
Fig. 2 illustrates electronic apparatus system schematic diagram of the present invention.
Fig. 3 illustrates the first embodiment of circuit for detecting in electronic apparatus system of the present invention.
Fig. 4 illustrates the second embodiment of circuit for detecting in electronic apparatus system of the present invention.
Fig. 5 illustrates the 3rd embodiment of circuit for detecting in electronic apparatus system of the present invention.
[embodiment]
About the electrolysis Response time of water further illustrates as follows:
DeltaGm0＝-nFE0＝-nRTlnKc
DeltaGm0: the gibbs free energy change of cell reaction under standard state, J/mol
N: the electron transfer number in reaction
F: Faraday constant, 96500C/mol
E0: the standard eleotromotive force of reacting under standard state, V
R: ideal gas constant, R=8.315J/molK
T: absolute temperature
Kc: the equilibrium constant (EquilbriumConstant)
Generate in the chemical reaction of water, free energy change is-474.4kJ/mol
Namely
2H
2(g)+O
2(g)＝2H
2O(1)
Half-reaction respectively
O
2+4H
++4e＝2H
2O
2H
2＝4H
++4e
Namely
Electron transfer number=4
Sum up above formula
-474.4×10
3＝-4×96500E0
E0＝1.23V
Obtain water under 0.1MPa (pressure unit), the condition of 25 degree Celsius by above formula institute value, the electrolysis of water can be suppressed lower than electrolysis below electromotive force 1.23V.This selected electrolysis electromotive force, except considering the condition of pressure and temperature, also can be considered to electroplate (Electroplating) effect:
Ei＝E0+gTotal
Ei: actual decomposition voltage
E0＝Ec–Ea
Ec: negative electrode reversible electrode current potential
Ea: anode reversible electrode current potential
If the material that negative electrode and positive electrode uses is identical, therefore E0=0
Ei＝gTotal
GTotal represents total overvoltage value (TotalOvervoltage), this total overvoltage value represents the overvoltage value needed for will electroplating, and this overvoltage value may be produced by cathodic overvoltage, anodic overvoltage, concentration overvoltage, solution current strength, solution resistance.According to actual test, this total overvoltage value gTotal is about 0.6V.
From above-mentioned calculating, be applied to the better selection (such as 1.0V) between 0.6V ~ 1.23V of actual logic current potential of detecting pin, namely effectively can reach and prevent from detecting pin and be subject to moisture content and the electrolysis that causes.
But, due to 0.6V ~ 1.23V and non-standardized cargo current potential Vcc (5V or 3V).Therefore, the present invention is directed in jockey the electronic installation having detecting pin, a kind of jockey with anti-electrolysis is provided, when the leaching of detecting pin is put in water or when being placed in the environment being rich in moisture content, the generation of unlikely because electrolysis electromotive force, and make detecting pin cause the impaired or internal circuit misjudgment of electrolysis.
Consult shown in Fig. 2, it shows electronic apparatus system schematic diagram of the present invention.As shown in Figure 2; the housing 2 of one electronic installation 200 possesses water-proof function in order to protect all circuit elements in casing 2; that is housing 2 is a waterproof construction, and internal circuit 230 is arranged in housing 1, and it operates in standard logic current potential (Vcc).Moreover the region outside housing 2 is exposed area, also namely exposed area is positioned at outside waterproof construction.
Moreover jockey 220 is arranged at exposed area.Jockey 220 includes some metallic pin, and it is arranged in jockey 220.Wherein internal circuit 230 provides jockey 220 required voltage, and internal circuit 230 transmits data by jockey 220 with extraneous electronic installation.Moreover it has an anti-electrolytic potential (V1) to have a detecting pin 222 in metallic pin, and is not provided voltage by internal circuit 230 under detecting metallic pin 224 normality beyond pin 222.
In Fig. 2, and metallic pin is positioned at exposed area.In other words, detect pin 222 may soak and put in water or be placed in the environment being rich in moisture content.Moreover, detecting pin 222 is electrically connected to the first resistance R1 of casing 2 inside, and the first resistance R1 is connected between an anti-electrolytic potential (V1) and detecting pin 222, first resistance R1 is as a pull-up resistor (pull-upresistor), it can make detecting pin 222 when not yet detecting extraneous electronic installation and inserting jockey 220, and the signal of detecting pin 222 is pulled to anti-electrolytic potential V1.Wherein, anti-electrolytic potential V1 is between 0.6V ~ 1.23V.
According to embodiments of the invention, the invention provides a circuit for detecting 240 and be connected between detecting pin position 222 and internal circuit 230.As shown in Figure 2, the detecting pin 222 of electronic installation 200 of the present invention is when not yet having detected extraneous electronic installation and having inserted jockey 220, the signal of detecting pin 222 is pulled to anti-electrolytic potential V1 (between 0.6V ~ 1.23V) by the first resistance R1, meanwhile, the signal of this anti-electrolytic potential V1 can be converted into the notification signal D of standard logic current potential Vcc by circuit for detecting 240.That is, according to the notification signal D receiving standard logic current potential Vcc, internal circuit 230 judges that the jockey 220 detecting pin 222 place not yet has extraneous electronic installation to insert.
Otherwise, detecting pin 222 is when having detected extraneous electronic installation and having inserted jockey 220, the signal of detecting pin 222 can by drop-down (pulldown) to earthing potential (0V), meanwhile, this earthing potential (0V) also can be converted into the notification signal D input internal circuit 230 of earthing potential (0V) by circuit for detecting 240.Also be say, according to the notification signal D of the earthing potential received (0V), internal circuit 230 judges that the jockey 220 at detecting pin 222 place has had extraneous electronic installation to insert.
That is, circuit for detecting 240 of the present invention is electrically connected to detecting and connects 222 and continue circuit for detecting differentiation detecting pin position 222 whether be electrically connected extraneous electronic installation, and in circuit for detecting 240 determine detecting pin 222 be electrically connected extraneous electronic installation time, the signal D that gives notice make to internal circuit 230 internal circuit 130 provide voltage to detecting pin 222 beyond detecting pin 224.
Below the operating principle of electronic installation 200 of the present invention is introduced in detail.As shown in Figure 2, the detecting pin 222 of electronic installation 200 of the present invention is when not yet detecting jockey and having extraneous electronic installation to insert, and the signal of detecting pin 222 is pulled to anti-electrolytic potential V1 by the first resistance R1.Because anti-electrolytic potential V1 is between 0.6V ~ 1.23V, therefore this anti-electrolytic potential V1 can't produce leakage current (leakagecurrent), also can not produce electrolysis Response time (ElectromotiveForce), therefore, detect pin 222 and can not cause electrolysis (ElectrolysisEffect).
Moreover the signal of anti-electrolytic potential V1 is converted into the notification signal D of standard logic current potential Vcc by circuit for detecting 240.Therefore, according to the notification signal D receiving standard logic current potential Vcc, internal circuit 230 judges that the jockey 220 detecting pin 222 place not yet has extraneous electronic installation to insert.Now, in jockey, other pin 224 is in open-circuit condition (opencircuit).
Otherwise, detecting pin 222 detect in jockey 220 have extraneous electronic installation to insert time, the signal of detecting pin 222 can by drop-down (pulldown) to earthing potential (0V), meanwhile, circuit for detecting 240 can produce the notification signal D of earthing potential (0V) to internal circuit 230.Also be say, according to the notification signal D of the earthing potential received (0V), internal circuit 230 judges that the jockey 220 at detecting pin 222 place has had extraneous electronic installation to insert.Afterwards, other pin 224 of jockey 220 can start to provide signal and carry out data transmission with extraneous electronic installation.
Clearly, because detecting pin 222 maximum voltage value is only anti-electrolytic potential V1, therefore electrolysis cannot be caused.
Consult shown in Fig. 3, it shows the first embodiment of circuit for detecting in electronic apparatus system of the present invention.Because the operating principle of other element is all identical, therefore the 3rd figure only introduces the operating principle of circuit for detecting 240 in detail.The circuit for detecting 240 of the first embodiment comprises comparator 245, a second resistance R2, the 3rd resistance R3.Wherein, the second resistance R2 and the 3rd resistance R3 are serially connected with anti-electrolytic potential V1 and can produce V-voltage with the node (node) making the second resistance R2 be connected with the 3rd resistance R3 between earthing potential.The negative input end of comparator 245 receives V-voltage, and the positive input of comparator 25 is connected to detecting pin 222.
Because comparator 245 receives the power supply of standard logic current potential Vcc, when detecting pin 222 is anti-electrolytic potential V1, anti-electrolytic potential V1 is greater than V-voltage, and therefore, comparator 245 output produces the notification signal D of standard logic current potential Vcc.Otherwise when detecting pin 222 is earthing potential (0V), earthing potential (0V) is less than V-voltage, and therefore, comparator 245 output produces the notification signal D of earthing potential (0V).
Consult shown in Fig. 4, it shows the second embodiment of circuit for detecting in electronic apparatus system of the present invention.Because the operating principle of other element is all identical, therefore Fig. 4 only introduces the operating principle of circuit for detecting 240 in detail.The circuit for detecting 240 of the second embodiment formed from analog to digital quantizer 246, when detecting pin 222 is anti-electrolytic potential V1, anti-electrolytic potential V1 is considered as analog signal by analog-to-digital converter 246, and is converted to the notification signal D of standard logic current potential Vcc and notification signal D is considered as digital signal.Otherwise when detecting pin 222 is earthing potential (0V), earthing potential (0V) is considered as analog signal by analog-to-digital converter 246, and is converted to the notification signal D of earthing potential (0V).
Consult shown in Fig. 5, it shows the 3rd embodiment of circuit for detecting in electronic apparatus system of the present invention.Because the operating principle of other element is all identical, therefore Fig. 5 only introduces the operating principle of circuit for detecting 20 in detail.The circuit for detecting 240 of the 3rd embodiment is made up of electric potential transducer (levelshifter) 248, and when detecting pin 222 is anti-electrolytic potential V1, anti-electrolytic potential V1 is converted to the notification signal D of standard logic current potential Vcc by electric potential transducer 248.Otherwise when detecting pin 222 is earthing potential (0V), earthing potential (0V) is converted to the notification signal D of earthing potential (0V) by electric potential transducer 248.
Above-mentioned comparator 245 and analog-to-digital converter 246, be only the various different embodiment of circuit for detecting 240 from electric potential transducer 248.In the application of reality, also can comprise the circuit element of other different circuit function, such as optical coupler, offset buffer etc.The circuit element of these difference in functionalitys is all containing being placed in the equivalence element of the circuit for detecting 240 defined in the present invention.Moreover, the present invention is not limited to the specification of jockey, such as a USB jockey, an IEEE1394 jockey, a HDMI jockey, a network connection device or a memory card connector, all can apply to the present invention and reach the jockey with anti-electrolysis.
Therefore, advantage of the present invention is for the electronic installation with detecting pin, a kind of jockey with anti-electrolysis is provided, when the leaching of detecting pin is put in water or when being placed in the environment being rich in moisture content, the generation of unlikely because electrolysis electromotive force, and make detecting pin cause the impaired or internal circuit misjudgment of electrolysis.
Although preferred embodiment discloses as above by the present invention; so itself and be not used to limit the present invention; anyly have the knack of this those skilled in the art; without departing from the spirit and scope of the present invention; when doing a little change and retouching, therefore protection scope of the present invention is when being as the criterion depending on the appended claim person of defining.
Claims (8)
1. one kind has the connected system of anti-electrolysis, comprise a jockey and an electronic installation, it is characterized in that, described electronic installation comprises a waterproof construction, one internal circuit, one circuit for detecting and an exposed area, described internal circuit is arranged in described waterproof construction, described exposed area is arranged at outside waterproof construction, and described jockey is arranged at described exposed area, wherein internal circuit provides jockey required voltage, and internal circuit transmits data by jockey with extraneous electronic installation;
Described jockey comprises some metallic pin, described metallic pin to be arranged in jockey and to provide electronic signal transmission, and there is in metallic pin a detecting pin, wherein, detecting pin continues the voltage being provided below 1.23V by internal circuit, and the metallic pin detected beyond pin is not provided voltage by internal circuit under normality;
Wherein, described circuit for detecting is electrically connected described detecting pin and continues circuit for detecting and differentiates whether detecting pin is electrically connected extraneous electronic installation, and when circuit for detecting differentiates that detecting pin is electrically connected extraneous electronic installation, send a notification signal and make to internal circuit internal circuit provide the metallic pin of voltage to detecting beyond pin.
2. the connected system with anti-electrolysis according to claim 1, is characterized in that, this detecting pin continues to provide voltage between 1.23V to 0.6V by internal circuit.
3. the connected system with anti-electrolysis according to claim 1, is characterized in that, the metallic pin beyond this detecting pin is not provided the voltage of 3V or 5V under normality by internal circuit.
4. the connected system with anti-electrolysis according to claim 1, is characterized in that, this jockey is also electrically connected one first resistance, and this first resistance is connected between this detecting pin and voltage of this below 1.23V.
5. the connected system with anti-electrolysis according to claim 1, is characterized in that, this jockey is a USB jockey, an IEEE1394 jockey, a HDMI jockey, a network connection device or a memory card connector.
6. the connected system with anti-electrolysis according to claim 1, is characterized in that, this circuit for detecting comprised in described electronic installation comprises:
One second resistance;
One the 3rd resistance, this second resistance and the 3rd resistance are serially connected with between earthing potential and the voltage of this below 1.23V; And
One comparator, has a negative input end and is connected to the node that this second resistance is connected with the 3rd resistance, have positive input terminal and be connected to this detecting pin, have an output and export this notification signal.
7. the connected system with anti-electrolysis according to claim 1, is characterized in that, this circuit for detecting is an analog-to-digital converter.
8. the connected system with anti-electrolysis according to claim 1, is characterized in that, this circuit for detecting is an electric potential transducer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010275696.0A CN102403590B (en) | 2010-09-08 | 2010-09-08 | There is the jockey of anti-electrolysis |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010275696.0A CN102403590B (en) | 2010-09-08 | 2010-09-08 | There is the jockey of anti-electrolysis |
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| CN102403590A CN102403590A (en) | 2012-04-04 |
| CN102403590B true CN102403590B (en) | 2015-11-25 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1450432A (en) * | 2002-04-10 | 2003-10-22 | 希旺科技股份有限公司 | Multi-function electronic peripheral card capable of detecting pluggable card |
| CN101494342A (en) * | 2008-01-22 | 2009-07-29 | 华硕电脑股份有限公司 | Detection device and connector module |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW555253U (en) * | 2002-05-13 | 2003-09-21 | Delta Electronics Inc | Connector having signal detection function |
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2010
- 2010-09-08 CN CN201010275696.0A patent/CN102403590B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1450432A (en) * | 2002-04-10 | 2003-10-22 | 希旺科技股份有限公司 | Multi-function electronic peripheral card capable of detecting pluggable card |
| CN101494342A (en) * | 2008-01-22 | 2009-07-29 | 华硕电脑股份有限公司 | Detection device and connector module |
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| CN102403590A (en) | 2012-04-04 |
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