CN109100810A - Foreign matter method for detecting and power-supply system with foreign matter detecting function - Google Patents
Foreign matter method for detecting and power-supply system with foreign matter detecting function Download PDFInfo
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- CN109100810A CN109100810A CN201810348859.XA CN201810348859A CN109100810A CN 109100810 A CN109100810 A CN 109100810A CN 201810348859 A CN201810348859 A CN 201810348859A CN 109100810 A CN109100810 A CN 109100810A
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- China
- Prior art keywords
- receiving end
- feeder ear
- foreign matter
- voltage
- electrical transfer
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
- G01V3/104—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils
- G01V3/105—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/60—Circuit arrangements or systems for wireless supply or distribution of electric power responsive to the presence of foreign objects, e.g. detection of living beings
Abstract
The present invention proposes a kind of foreign matter method for detecting and the power-supply system with foreign matter detecting function.Power-supply system with foreign matter detecting function includes feeder ear, receiving end and cable.Feeder ear includes: power supply unit, foreign matter detecting control circuit and pull-up circuit.Power supply unit supplies control signal according to power supply, provides supply voltage to the receiving end.Whether foreign matter detecting control circuit generates power supply supply control signal and generates foreign matter detection control signal to control power supply unit, and the voltage of the electrical transfer node according to feeder ear, thus judge receiving end with the presence of foreign matter.The level that self-powered transmission node is provided to the supply electric current of receiving end is adaptively adjusted according to foreign matter detection control signal in pull-up circuit.
Description
Technical field
The present invention relates to a kind of foreign matter method for detecting and the power-supply system with foreign matter detecting function, a kind of energy is particularly related to
Whether enough detecting receiving ends that passes through are with the presence of foreign matter, and the electrical transfer node that self-powered end is adaptively adjusted is provided to receiving end
Supply electric current level, thus prevent receiving end from corroding or the foreign matter method for detecting damaged and electricity with foreign matter detecting function
Source system.
Background technique
Figure 1A is please referred to, the block schematic diagram of an embodiment of the power-supply system of the prior art is shown.Figure 1B is please referred to,
The block schematic diagram of another embodiment of its power-supply system for showing the prior art.Fig. 1 C is please referred to, the prior art is shown
The block schematic diagram of the another embodiment of power-supply system.
As shown in figs. 1 a to 1 c, power-supply system 100a, 100b of the prior art and 100c all include a power supply unit 10,
One cable 70 and an electronic device 20.In power-supply system 100a, 100b of the prior art and 100c, power supply unit 10 and electricity
Sub-device 20 is coupled to each other via cable 70.Power supply unit 10 includes at least a power adapter (not shown).Electricity
Sub-device 20 includes at least a load (not shown).Cable 70 includes positive supply transmission line 71, negative supply transmission line 73 and signal
Transmission line 72.When power supply unit 10 (serving as a feeder ear) and electronic device 20 (serving as a receiving end) via cable 70 and that
When this coupling, positive supply transmission line 71 and negative supply transmission line 73 constitute circuit and are able to transmission electric energy.
The above be the prior art shown in Figure 1A~1C power-supply system 100a, 100b and 100c it is common similar
Place.
However, being its respective electronic device in place of power-supply system 100a, 100b of the prior art and the difference of 100c
The building form of resistance possessed by 20 is different each other.
When foreign matter (the such as, but not limited to liquid such as solid or aqueous vapor) or corrosion are (for example) present in the electric current of signal transmission
On path, or when being present between transmission line, the variation of equivalent resistance will cause, the present invention is to pass through detecting equivalent resistance
Variation, determines the presence of foreign matter or corrosion, and prevented.
In the case where electronic device 20 has situation existing for foreign matter, such as, but not limited to the signal of electronic device 20 and cable 70 is passed
On the port that defeated line 72 connects or between transmission line, when there are damp mass, electrolyte, solid foreign materials or corrosion situation occurs, have
It may cause on the port by this one end electrical transmission node CCR of electronic device 20 or abnormal electricity occur between transmission line
Resistance value, can with foreign matter resistance Rf or contact resistance Rcont it is equivalently represented it.Under above-mentioned abnormal conditions, if power supply is supplied
The electric current that device 10 persistently exports high levels will cause on port or generate heat between transmission line to damage to electronic device 20, or in tide
Cell reaction persistently occurs under wet environment, so that causing port or transmission line persistently to corrode, when corrosion situation is more serious
When may also cause danger or make electronic device 20 damage.Unusual condition above-mentioned may have Multiple Failure Modes, below with
Several example explanations.
As shown in Figure 1A, in the electronic device 20 of the power-supply system 100a of the prior art, due to foreign matter resistance Rf or end
The contact resistance Rcont being abnormal on mouth is series at pull down resistor Rd, therefore, positioned at electronic device 20 by electrical transmission node
This one end CCR could possibly be higher than coffret specification (such as, but not limited to USB PD) it is possible that abnormal high resistance value
Resistance value range.
As shown in Figure 1B, the electronic device 20 of the power-supply system 100b of the prior art has the contact resistance being one another in series
Rcont and pull down resistor Rd, and the foreign matter resistance Rf not short to ground.In the case, by this one end electrical transmission node CCR
Equivalent resistance could possibly be higher than or lower than coffret specification resistance value range.
As shown in Figure 1 C, the electronic device 20 of the power-supply system 100c of the prior art has the contact resistance being one another in series
Rcont and pull down resistor Rd, and the foreign matter resistance Rf not short to supply voltage VBUS.In the case, by electrical transmission node
The equivalent resistance of this one end CCR may cause the range of voltage values higher or lower than coffret specification.
CCR is in power-supply system 100a, 100b of the prior art and 100c, may if not handling such unusual condition
It burns or persistently corrodes, may cause danger when situation is more serious or damage electronic device 20.
In view of this, it is an object of the invention to overcome the deficiencies in the prior art and defect, propose a kind of to propose a kind of energy
Whether enough detecting receiving ends that passes through are with the presence of foreign matter, and the electrical transfer node that self-powered end is adaptively adjusted is provided to receiving end
Supply electric current level, thus prevent receiving end from corroding or the foreign matter method for detecting damaged and electricity with foreign matter detecting function
Source system.
Summary of the invention
In order to achieve the above-mentioned object of the invention, just wherein a viewpoint says that the present invention provides a kind of foreign matter method for detecting, are used for
The receiving end between a feeder ear and a receiving end is detected whether with the presence of foreign matter, which passes through a cable with the receiving end
Connection, the cable include a positive supply transmission line, a negative supply transmission line and a signal transmssion line, and wherein the feeder ear has one
Electrical transfer node, the receiving end have one by electrical transmission node, and the signal transmssion line is in the electrical transfer node and is somebody's turn to do by electricity
One transmission signal of transmission, the foreign matter method for detecting comprise the steps of (A) and provide in the electrical transfer node between transmission node
One low current, judges whether a voltage of the electrical transfer node of the feeder ear is greater than or equal to a first voltage；(B1) when
Step (A) is judged as YES, and represents the feeder ear and the receiving end is in and does not couple situation each other, at this point, entering step (B2)；
(B2) low current is provided to the receiving end from the electrical transfer node of the feeder ear；(C) when step (A) is judged as NO, generation
The table feeder ear and the receiving end " preliminary " are judged as being in the situation that is coupled to each other, at this point, from the feeder ear this for fax
Defeated node provides a high current to the receiving end, wherein the level of the high current is greater than the level of the low current；(D) in the confession
Electric end and the receiving end " preliminary " are judged as providing in the situation that is coupled to each other and from the electrical transfer node of the feeder ear
Under the premise of the high current to the receiving end, judge the voltage of the electrical transfer node of the feeder ear whether between one once again
Between second voltage and a tertiary voltage, wherein the level of the first voltage is greater than the level of the second voltage, the second voltage
Level be greater than the level of the tertiary voltage, the level of the tertiary voltage is greater than zero；(E) when step (D) is judged as YES, representing should
Feeder ear and the receiving end " certain " are judged as in the situation that is coupled to each other, at this point, continuing to the confession from the feeder ear
Electrical transmission node provides the high current to the receiving end；And (F1) is judged as NO when step (D), representing the receiving end has foreign matter
In the presence of at this point, entering step (F2)；(F2) change from the electrical transfer node of the feeder ear and provide the low current to should by electricity
Thus end prevents the receiving end from corroding or damaging.
Preferably implement in kenel a kind of, step (F2) changes offer from the electrical transfer node of the feeder ear this is low
Electric current to the receiving end includes: extremely should be by electricity from the low current that the electrical transfer node of the feeder ear changes one constant type of offer
End.
Preferably implement in kenel a kind of, step (F2) changes offer from the electrical transfer node of the feeder ear this is low
Electric current to the receiving end includes: to change the electric current for the pulse wave formula that provides to the receiving end from the electrical transfer node of the feeder ear.
Preferably implement in kenel a kind of, in the receiving end with the presence of foreign matter and from the electrical transfer section of the feeder ear
Under the premise of point changes offer low current to the receiving end: (G) judges the electricity of the electrical transfer node of the feeder ear once again
Whether pressure is greater than or equal to the first voltage.
Preferably implement in kenel a kind of, when step (G) is judged as YES, represents the feeder ear and the receiving end is in that
This does not couple situation, at this point, returning to step (B2).
Preferably implement in kenel a kind of, when step (G) is judged as NO, represents the receiving end with the presence of foreign matter, at this point,
Return to step (F2).
Preferably implement in kenel a kind of, is judged as being in the feeder ear and the receiving end " certain " and is coupled to each other
Situation and continue under the premise of providing the high current to the receiving end from the electrical transfer node of the feeder ear: (H) sentences
Whether the electric energy transmission between the feeder ear and the receiving end of breaking communicates (power delivery communication)
Failure.
Preferably implement in kenel a kind of, when step (H) is judged as YES, represents the receiving end with the presence of foreign matter, at this point,
Return to step (F2).
Another viewpoint is sayed that the present invention provides a kind of power-supply systems with foreign matter detecting function, and there is foreign matter to detect for this
The power-supply system of brake includes a feeder ear, a receiving end and a cable, which is connected with the receiving end by the cable
It connects, it is different whether this there is the receiving end of the power-supply system of foreign matter detecting function for detecting between the feeder ear and the receiving end to have
Object exists, wherein the cable includes a positive supply transmission line, a negative supply transmission line and a signal transmssion line, the wherein power supply
End has an electrical transfer node, which has one by electrical transmission node, and the signal transmssion line is in the electrical transfer node
With this by one transmission signal of transmission between electrical transmission node, there is the power-supply system of foreign matter detecting function to include for this: the feeder ear,
Include: a power adapter, supplies control signal according to a power supply, provide a supply voltage to the receiving end；
One foreign matter detecting control circuit generates power supply supply control signal, to control the power adapter, and, this is different
Object detecting control circuit generates a foreign matter detection control signal according to a voltage of the electrical transfer node of the feeder ear, by
Whether this judges the receiving end with the presence of foreign matter；And one pull-up circuit be adaptively adjusted according to the foreign matter detection control signal
The level of a supply electric current of the receiving end is provided to from the electrical transfer node of the feeder ear.
Preferably implement in kenel a kind of, which includes: a transmission voltage detection circuit, to
The voltage of the electrical transfer node of the feeder ear is detected, to generate an electrical transfer voltage level signal；And one adjustment
Circuit, to generate the foreign matter detection control signal according to the electrical transfer voltage level signal.
Preferably implement in kenel a kind of, which includes: a pull-up voltage source, to provide pull-up electricity
Pressure；And a pull-up current source, to according to the foreign matter detection control signal, be adaptively adjusted from the feeder ear this for fax
Defeated node is provided to the level of the supply electric current of the receiving end.
Preferably implement in kenel a kind of, which includes: a pull-up voltage source, to provide pull-up electricity
Pressure；And a pull-up resistor, the electrical transfer from the feeder ear is adaptively adjusted according to the foreign matter detection control signal
Node is provided to the level of the supply electric current of the receiving end.
Preferably implement in kenel a kind of, the foreign matter detecting control circuit is according to the electrical transfer node of the feeder ear
The voltage, generate the foreign matter detection control signal, it includes following for thus judging whether the receiving end has method existing for foreign matter
Step: (A) the electrical transfer node provide a low current, the transmission voltage detection circuit judge the feeder ear this for fax
Whether the voltage of defeated node is greater than or equal to a first voltage；(B1) when step (A) is judged as YES, represent the feeder ear with should
Receiving end is in and does not couple situation each other, at this point, entering step (B2)；(B2) pull-up circuit from the feeder ear this for fax
Defeated node provides the low current to the receiving end；(C) when step (A) is judged as NO, the feeder ear and the receiving end are represented " just
Step " is judged as in the situation that is coupled to each other, at this point, the electrical transfer node offer one of the pull-up circuit from the feeder ear is high
Electric current is to the receiving end, wherein the level of the high current is greater than the level of the low current；(D) in the feeder ear and the receiving end
" preliminary " is judged as being in the situation that is coupled to each other and the pull-up circuit provides the height from the electrical transfer node of the feeder ear
Under the premise of electric current to the receiving end, which judges being somebody's turn to do for the electrical transfer node of the feeder ear once again
Whether voltage is between a second voltage and a tertiary voltage, wherein the level of the first voltage is greater than the second voltage
Level, the level of the second voltage are greater than the level of the tertiary voltage, and the level of the tertiary voltage is greater than zero；(E) as step (D)
It is judged as YES, represents the feeder ear and the receiving end " certain " is judged as in the situation that is coupled to each other, at this point, the pull-up circuit
It continues to provide the high current to the receiving end from the electrical transfer node of the feeder ear；And (F1) sentences when step (D)
It is no for breaking, and represents the receiving end with the presence of foreign matter, at this point, entering step (F2)；(F2) pull-up circuit being somebody's turn to do from the feeder ear
Electrical transfer node, which changes, provides the low current to the receiving end, thus prevents the receiving end from corroding or damaging.
Preferably implement in kenel a kind of, the electrical transfer node of the pull-up circuit of step (F2) from the feeder ear
Change the low current to the receiving end is provided to include: the pull-up circuit from the electrical transfer node of the feeder ear changes offer one it is constant
The low current of formula is to the receiving end.
Preferably implement in kenel a kind of, the electrical transfer node of the pull-up circuit of step (F2) from the feeder ear
Change the low current to the receiving end to be provided to include: the pull-up circuit change from the electrical transfer node of the feeder ear and a pulse wave is provided
The electric current of formula is to the receiving end.
Preferably implement in kenel a kind of, the receiving end with the presence of foreign matter and the pull-up circuit from the feeder ear this
Under the premise of electrical transfer node changes offer low current to the receiving end: (G) the transmission voltage detection circuit judges once again should
Whether the voltage of the electrical transfer node of feeder ear is greater than or equal to the first voltage.
Preferably implement in kenel a kind of, when step (G) is judged as YES, represents the feeder ear and the receiving end is in that
This does not couple situation, at this point, returning to step (B2).
Preferably implement in kenel a kind of, when step (G) is judged as NO, represents the receiving end with the presence of foreign matter, at this point,
Return to step (F2).
Preferably implement in kenel a kind of, is judged as being in the feeder ear and the receiving end " certain " and is coupled to each other
Situation and the pull-up circuit continue to before providing the high current to the receiving end from the electrical transfer node of the feeder ear
Put: (H) judges that the electric energy transmission between the feeder ear and the receiving end communicates (power delivery
Communication) whether fail.
Preferably implement in kenel a kind of, when step (H) is judged as YES, represents the receiving end with the presence of foreign matter, at this point,
Return to step (F2).
Another viewpoint is sayed, the present invention provides a kind of foreign matter method for detecting, for detecting a feeder ear and a receiving end
Between the receiving end whether with the presence of foreign matter, which is connect with the receiving end by a cable, the cable include a positive electricity
Source transmission line, a negative supply transmission line and a signal transmssion line, wherein the feeder ear has an electrical transfer node, the receiving end
With one by electrical transmission node, the signal transmssion line is in the electrical transfer node and should be transmitted by transmission one between electrical transmission node
Signal, which, which comprises the steps of, provides a low current in the electrical transfer node；And when judgement should be by electricity
Whether end is coupled to the feeder ear and foreign exists, and changes in the electrical transfer node and provides a high current, otherwise in the power supply
Transmission node continues to provide the low current to avoid corrosion.
Preferably implement in kenel a kind of, this judges whether the receiving end is coupled to existing for the feeder ear and foreign
Whether step includes: to judge a voltage of the electrical transfer node within a voltage range；When the electrical transfer node
The voltage is then to judge that the receiving end is coupled to the feeder ear and foreign exists within the voltage range；And works as and be somebody's turn to do
The voltage of electrical transfer node exceeds except the voltage range, then judges that the receiving end is not coupled to the feeder ear or has foreign matter
In the presence of.
Below by way of specific embodiment elaborate, should be easier to understand the purpose of the present invention, technology contents, feature and
The effect of it is realized.
Detailed description of the invention
Figure 1A marks the block schematic diagram of an embodiment of the power-supply system of the prior art.
Figure 1B marks the block schematic diagram of another embodiment of the power-supply system of the prior art.
Fig. 1 C marks the block schematic diagram of the another embodiment of the power-supply system of the prior art.
Fig. 2A is shown, the block schematic diagram of an embodiment of the power-supply system with foreign matter detecting function of the invention.
Fig. 2 B is shown, the block schematic diagram of another embodiment of the power-supply system with foreign matter detecting function of the invention.
Fig. 3 A show foreign matter detecting control circuit of the invention a specific embodiment and pull-up circuit of the invention one
Specific embodiment.
Fig. 3 B show foreign matter detecting control circuit of the invention a specific embodiment and pull-up circuit of the invention it is another
One specific embodiment.
Fig. 4 shows the step flow chart of an embodiment of foreign matter method for detecting of the invention.
Fig. 5 A marks an embodiment of first voltage of the invention, second voltage and tertiary voltage.
Fig. 5 B marks a specific embodiment of first voltage of the invention, second voltage and tertiary voltage.
Fig. 6 shows an embodiment of the electric current of pulse wave formula of the invention.
Specific embodiment
For the present invention aforementioned and other technology contents, feature and effect, it is following cooperation with reference to attached drawing one preferably
In the detailed description of embodiment, can clearly it present.Attached drawing in the present invention belongs to signal, be mostly intended to indicate each device with
And the function relationship between each element, it then and not according to ratio is drawn as circuit, signal waveform and frequency.
Please refer to Fig. 2A and comparative diagram 4.Fig. 2A is shown, and the one of the power-supply system with foreign matter detecting function of the invention is real
Apply the block schematic diagram of example.Fig. 4 shows the step flow chart of an embodiment of foreign matter method for detecting of the invention.
As shown in Figure 2 A, the foreign matter method for detecting of the present embodiment can be applied to such as, but not limited to one, and there is foreign matter to detect function
In the power-supply system 200 of energy.Wherein, the power-supply system 200 with foreign matter detecting function of the present embodiment include a feeder ear 10,
One cable 70 and a receiving end 20.Feeder ear 10 is coupled to each other with receiving end 20 via cable 70, with self-powered end 10 to by
Transmit electric energy in electric end 20.In the present embodiment, cable 70 includes positive supply transmission line 71, negative supply transmission line 73 and signal transmission
Line 72.In the present embodiment, feeder ear 10 has an electrical transfer node CCS, and receiving end 20 is with one by electrical transmission node
CCR, signal transmssion line 72 is in electrical transfer node CCS and by one transmission signal CC of transmission between electrical transmission node CCR.
In one embodiment, power-supply system 200 may be, for example, one and meet USB PD (Universal Serial Bus
Power Delivery) coffret specification power-supply system, and electrical transfer node CCS, by electrical transmission node CCR and biography
Defeated signal CC then corresponds to the CC (Configuration Channel) of USB PD.Certainly, spirit according to the present invention, also not
It is limited to this.
The present invention can detect whether receiving end 20 has foreign matter is existing (as shown in Figure 4) occurs；When detecting by electricity
When there is situation existing for foreign matter at end 20, in one embodiment, the power-supply system 200 with foreign matter detecting function is for example adapted to
Property ground reduction self-powered end 10 electrical transfer node CCS be provided to receiving end 20 one supply electric current Ic level.Another
In one embodiment, when detecting receiving end 20 has situation existing for foreign matter, there are power-supply system 200 of foreign matter detecting function
Alert news can such as be issued or self-powered end 10 can be stopped and provide electric energy to receiving end 20；And (the meaning when being in normal condition
That is, when receiving end 20 is without situation existing for foreign matter), then the power-supply system 200 with foreign matter detecting function then can self-powered
Hold 10 pairs of receiving ends 20 provide electric energy (about the present embodiment how to judge receiving end 20 whether have method details existing for foreign matter with
Feature illustrates after appearance).
As shown in Figure 2 A, in one embodiment, feeder ear 10 such as, but not limited to can (below will be for for a power supply unit
Electric end 10 is expressed as power supply unit 10), and receiving end 20 can be such as, but not limited to an electronic device (below by receiving end 20
It is expressed as electronic device 20).Power supply unit 10 includes a power adapter 11, a foreign matter detecting control circuit 12 and a pull-up
Circuit 13.
Power adapter 11 supplies control signal CTL according to a power supply, provides a supply voltage VBUS to receiving end 20.Electricity
Source converter 11 may be, for example, the switch type power converter (switching power regulator) of various kinds pattern, this hair
It is bright to be applicable to any of which.
Foreign matter detecting control circuit 12 generates power supply supply control signal CTL, on the one hand to control power adapter
11.In addition, on the other hand, foreign matter detecting control circuit 12 is according to a voltage of the electrical transfer node CCS of feeder ear 10
Vccs generates a foreign matter detection control signal S2, thus judges whether receiving end 20 (is detected about foreign matter and controlled with the presence of foreign matter
How circuit 12 judges whether receiving end 20 has method details and feature existing for foreign matter, illustrates after appearance).
10 electrical transfer node CCS of self-powered end is adaptively adjusted according to foreign matter detection control signal S2 in pull-up circuit 13
Be provided to a supply electric current Ic of receiving end 20 level (about when detecting receiving end 20 has situation existing for foreign matter, on
How puller circuit 13 is adaptively adjusted the supply electric current Ic that self-powered end 10 electrical transfer node CCS is provided to receiving end 20
The details and feature of level illustrate after appearance).
Fig. 2 B is please referred to, the side of another embodiment of the power-supply system with foreign matter detecting function of the invention is shown in figure
Block schematic diagram.In the present embodiment, foreign matter detecting control circuit 12 can not also control power adapter 11.
Please refer to Fig. 3 A and comparative diagram 2A.Fig. 3 A show foreign matter detecting control circuit of the invention a specific embodiment and
One specific embodiment of pull-up circuit of the invention.
As shown in Figure 3A, foreign matter detecting control circuit 12 includes a transmission voltage detection circuit 121 and an adjustment circuit
122.Transmit voltage detection circuit 121, a voltage vcc s of the electrical transfer node CCS to detect feeder ear 10, to generate
One electrical transfer voltage level signal S1.Adjustment circuit 122 is to generate foreign matter and detect according to electrical transfer voltage level signal S1
Observing and controlling signal S2.
As shown in Figure 3A, in one embodiment, pull-up circuit 13 includes a pull-up voltage source Vp and a pull-up current source
Ip.Voltage source Vp is pulled up to provide pull-up voltage on one.Pull-up current source Ip, to fit according to foreign matter detection control signal S2
The electrical transfer node CCS at answering property adjustment self-powered end 10 is provided to the level of the supply electric current Ic of receiving end 20.
As shown in Figure 3B, in another embodiment, pull-up circuit 13 includes a pull-up voltage source Vp and a pull-up resistor
Rp.Voltage source Vp is pulled up to provide pull-up voltage on one.Pull-up resistor Rp, to adapt to according to foreign matter detection control signal S2
Property adjustment self-powered end 10 electrical transfer node CCS be provided to receiving end 20 supply electric current Ic level, such as can pass through
It adjusts pull-up resistor Rp and realizes.
In addition, in the present embodiment, electronic device 20 includes a load 21.When power supply unit 10 (serving as a feeder ear)
When being coupled to each other with electronic device 20 (serving as a receiving end) via cable 70, power transmission line (71 and 73) is able to transmission electricity
Can, imply that supply voltage VBUS is sent to the load for being set to receiving end 20 by the power adapter 11 for being set to feeder ear 10
21, thus feeder ear 10 can be considered power supply transmission end and receiving end 20 can be considered power supply receiving end.
Illustrate below, in the present embodiment, how foreign matter detecting control circuit 12 is according to the electrical transfer section of feeder ear 10
Whether the voltage vcc s of point CCS generates foreign matter detection control signal S2, thus judges receiving end 20 with the presence of foreign matter.
Please refer to Fig. 4 and comparative diagram 2A, Fig. 5 A and Fig. 5 B.Fig. 5 A marks first voltage of the invention, second voltage and
One embodiment of three voltages.Fig. 5 B marks a specific embodiment of first voltage of the invention, second voltage and tertiary voltage.
In the present embodiment, step S11 as shown in Figure 4 provides a low current (this low electricity in electrical transfer node CCS
Stream such as, but not limited to can freely pull-up current source Ip shown in Fig. 3 A provide).The transmission of foreign matter detecting control circuit 12
Voltage detection circuit 121 judges whether the voltage vcc s of the electrical transfer node CCS of feeder ear 10 is greater than or equal to one first electricity
It presses (step S12 as shown in Figure 4).In one embodiment, first voltage can be such as, but not limited to bV shown in Fig. 5 A.One
In specific embodiment, first voltage can be such as, but not limited to 4V shown in Fig. 5 B.This means, in the present embodiment, foreign matter is detected
The transmission voltage detection circuit 121 of control circuit 12 judges whether the voltage vcc s of the electrical transfer node CCS of feeder ear 10 is high
In or be equal to a first voltage (such as: whether voltage vcc s is greater than or equal to 4V).
It is worth noting that, 4V shown in Fig. 5 B is not only to for example, to limit the scope of the invention.At it
In his embodiment, first voltage may be other any numerical value.
When being judged as YES for step S12 shown in Fig. 4, represents feeder ear 10 and receiving end 20 is in and does not couple situation each other
(step S21 as shown in Figure 4), at this point, the electrical transfer node CCS at 13 self-powered end 10 of pull-up circuit provides a low current
(implying that supply electric current Ic) to receiving end 20 (step S22 as shown in Figure 4).In one embodiment, when feeder ear 10 and by electricity
End 20 is a low current in the supply electric current Ic that when not coupling situation each other, feeder ear 10 is exported.In one embodiment, this
The level for supplying electric current Ic is such as, but not limited to be 1 μ A.
It is worth noting that, the level of above-mentioned supply electric current Ic is not only to for example, to limit the present invention
Range.In other embodiments, the level of above-mentioned supply electric current Ic may be other any numerical value.In addition, so-called " that
This does not couple situation " mean the transmission voltage detection circuit 121 of foreign matter detecting control circuit 12 for feeder ear 10 for fax
The judgement of the voltage vcc s of defeated node CCS, and by the electrical connection between feeder ear 10 and receiving end 20 is not judged as example but not
Being limited to is open circuit or resistance is more than the state of certain maximum (such as, but not limited to 4,000,000 nurse difficult to understand).
When being judged as NO for step S12 shown in Fig. 4, represents feeder ear 10 and be judged as being in receiving end 20 " preliminary "
The situation that is coupled to each other (step S13 as shown in Figure 4), at this point, the electrical transfer node CCS at 13 self-powered end 10 of pull-up circuit is mentioned
For a high current (implying that supply electric current Ic) to receiving end 20 (step S14 as shown in Figure 4).In one embodiment, work as power supply
End 10 and receiving end 20 " preliminary " be judged as in be coupled to each other situation when, supply electric current Ic that feeder ear 10 is exported is one
High current.In one embodiment, the level of this supply electric current Ic is such as, but not limited to be 330 μ A.Wherein, the level of high current
(such as, but not limited to can be 330 μ A) be greater than the level (such as, but not limited to can be 1 μ A) of low current.
It is worth noting that, the level of above-mentioned supply electric current Ic is not only to for example, to limit the present invention
Range.In other embodiments, the level of above-mentioned supply electric current Ic may be other any numerical value.Institute in the present embodiment
The 330 μ A of high current of citing, can for example corresponding to one of CC pin current source specification of USB PD, in other embodiments,
It can also be other electric current levels of the CC pin current source specification corresponding to USB PD, such as 180 μ A or 80 μ A.Certainly, according to
Spirit of the invention can also correspond to other kinds of coffret specification.
It is judged as in feeder ear 10 and receiving end 20 " preliminary " in be coupled to each other situation and 30 self-powered of pull-up circuit
The electrical transfer node CCS at end 10 provides high current (implying that supply electric current Ic, such as, but not limited to can be 330 μ A) to receiving end
Under the premise of 20, the transmission voltage detection circuit 121 of foreign matter detecting control circuit 12 judges the electrical transfer of feeder ear 10 once again
Whether the voltage vcc s of node CCS is between a second voltage and a tertiary voltage (step S15 as shown in Figure 4).
In one embodiment, second voltage can be such as, but not limited to cV shown in Fig. 5 A.In one embodiment,
Two voltages can be such as, but not limited to 2.6V shown in Fig. 5 B.In one embodiment, tertiary voltage can be such as, but not limited to figure
DV shown in 5A.In one embodiment, tertiary voltage can be such as, but not limited to 0.8V shown in Fig. 5 B.This means, at this
In embodiment, the transmission voltage detection circuit 121 of foreign matter detecting control circuit 12 judges the electrical transfer node CCS of feeder ear 10
Voltage vcc s whether between a second voltage and a tertiary voltage (such as: voltage vcc s whether between 0.8V~
2.6V)。
It is worth noting that, 0.8V, 2.6V shown in Fig. 5 B be not only to for example, to limit model of the invention
It encloses.In other embodiments, second voltage and tertiary voltage may be other any numerical value.
In the present embodiment, the level (such as, but not limited to can be 4V) of first voltage is greater than the level (example of second voltage
Such as, but not limited to, can be 2.6V), the level (such as, but not limited to can be 2.6V) of second voltage is greater than the level (example of tertiary voltage
Such as, but not limited to, can be 0.8V), the level (such as, but not limited to can be 0.8V) of tertiary voltage is greater than zero.
When being judged as YES (this means, when voltage vcc s is between 0.8V~2.6V) (please simultaneously for step S15 shown in Fig. 4
Refering to Fig. 5 A and Fig. 5 B), it represents feeder ear 10 and receiving end 20 " certain " is judged as being in and is coupled to each other situation (such as Fig. 4 institute
The step S16 shown), at this point, the electrical transfer node CCS that pull-up circuit 30 continues to self-powered end 10 provides high current (meaning
Electric current Ic is supplied, such as, but not limited to can be 330 μ A) to receiving end 20 (step S17 as shown in Figure 4).
Illustrated in the present embodiment to judge feeder ear 10 and receiving end 20 " certain " in the situation that is coupled to each other
Voltage vcc s range can be for example corresponding to the CC pin voltage threshold value of USB PD that is, between the section of 0.8V~2.6V
One of specification can also be in other embodiments other threshold ranges of the CC pin voltage threshold value corresponding to USB PD, example
As 0.4V~1.6V (i.e. second voltage is 1.6V and tertiary voltage is 0.4V) or 0.2V~1.6V (i.e. second voltage be 1.6V and
Tertiary voltage is 0.2V) section.Certainly, spirit according to the present invention can also correspond to other kinds of coffret specification.
When step S15 shown in Fig. 4 is no (this means, when voltage vcc s is between 0.8V~0V or when voltage vcc s is situated between
When 4V~2.6V) (please refer to Fig. 5 A and Fig. 5 B), receiving end 20 is represented with the presence of foreign matter, at this point, pull-up circuit 30 is certainly
The electrical transfer node CCS of feeder ear 10, which changes, provides low current to receiving end 20, thus prevents receiving end 20 from corroding or damaging.This
In so-called " change provide low current " be referring to that the level by the supply electric current Ic of script is reduced to 1 μ A (such as Fig. 4 institute from 330 μ A
The step S18A shown).
It is worth noting that, in the present invention, " change and provide low current " can be there are two types of embodiment.In one embodiment,
If being intended to the level of the supply electric current Ic of script being reduced to 1 μ A (step S18A as shown in Figure 4) from 330 μ A, according to Fig. 3 A institute
Show, the present invention can reduce the level of supply electric current Ic provided by the Ip of pull-up current source.
Alternatively, in another embodiment, if being intended to be reduced to 1 μ A (as schemed from 330 μ A the level of the supply electric current Ic of script
Step S18A shown in 4), according to Fig. 3 B, the resistance value of pull-up resistor Rp is can be improved in the present invention, is thus reduced on entire
The level of supply electric current Ic provided by puller circuit 13.
In the present embodiment, receiving end 20 gets rusty in order to prevent, and the present invention has whether detecting receiving end 20 has foreign matter to deposit
Function.For example, it when voltage vcc s is between 0.8V~0V or when voltage vcc s is between 4V~2.6V, represents by electricity
End 20 is with the presence of foreign matter.In the case, the present invention provides corresponding settling mode, that is: 30 self-powered end 10 of pull-up circuit
Electrical transfer node CCS change and provide low current to receiving end 20, by that will supply electric current Ic reduction by one to several powers, can have
Effect slows down the speed of corrosion or a possibility that for example burning occurs.It, can when voltage vcc s is between 0.8V~0V in the present embodiment
Corresponding to the foreign matter in such as, but not limited to Fig. 1 C there are the case where, and when voltage vcc s is between 4V~2.6V, can correspond to
Foreign matter such as, but not limited in 1A or 1B figure there are the case where.
In one embodiment, the electrical transfer node CCS at 30 self-powered end 10 of pull-up circuit, which changes, provides low current to by electricity
The specific embodiment at end 20 such as, but not limited to can be to provide the low current of a constant type to receiving end 20.This means, by script
The level of supply electric current Ic is reduced to 1 μ A (step S18A as shown in Figure 4) from 330 μ A.
Alternatively, in another embodiment, as shown in fig. 6, the electrical transfer node CCS at 30 self-powered end 10 of pull-up circuit changes
The electric current for being such as, but not limited to a pulse wave formula is provided to receiving end 20 (step S18B as shown in Figure 4).As shown in fig. 6, when electricity
When pressing Vccs between 0.8V~0V or when voltage vcc s is between 4V~2.6V, receiving end 20 is represented with the presence of foreign matter.In this feelings
Under condition, pull-up circuit of the invention can the electrical transfer node CCS at self-powered end 10 be provided to the supply electric current Ic of receiving end 20
10ms such as, but not limited to can be only supplied, and in next 990ms, pull-up circuit 30 can temporarily cease self-powered end 10
Electrical transfer node CCS provides supply electric current Ic to receiving end 20.Later, pull-up circuit be further continued for self-powered end 10 for fax
The supply electric current Ic that defeated node CCS is provided to receiving end 20 such as, but not limited to can only supply 10ms.Pass through self-powered end 10
Electrical transfer node CCS change and provide the electric current for being such as, but not limited to a pulse wave formula to receiving end 20, supply being averaged for electric current Ic
Value will be lower than the 330 μ A of high levels of script, similarly, can also effectively slow down the speed of corrosion or the possibility for example burnt occurs
Property.
In one embodiment, in receiving end 20 with the presence of foreign matter and the electrical transfer node at 30 self-powered end 10 of pull-up circuit
CCS change provide low current (such as: be reduced to 1 μ A to the premise of receiving end 20 from 330 μ A the level of the supply electric current Ic of script
Under, the transmission voltage detection circuit 121 of foreign matter detecting control circuit 12 can judge the electrical transfer node CCS of feeder ear 10 once again
Voltage vcc s whether be greater than or equal to first voltage (step S19 as shown in Figure 4).In one embodiment, first voltage example
It can be such as, but not limited to, bV shown in Fig. 5 A.In one embodiment, first voltage such as, but not limited to can be for shown in Fig. 5 B
4V.This means, in the present embodiment, the transmission voltage detection circuit 121 of foreign matter detecting control circuit 12 can judge to power once again
End 10 electrical transfer node CCS voltage vcc s whether be greater than or equal to a first voltage (such as: can judge voltage once again
Whether Vccs is greater than or equal to 4V).
When being judged as YES for step S19 shown in Fig. 4, represents feeder ear 10 and receiving end 20 is in and does not couple situation each other
(step S21 as shown in Figure 4), at this point, the electrical transfer node CCS offer that pull-up circuit 30 continues to self-powered end 10 is low
Electric current is to receiving end 20 (step S22 as shown in Figure 4).
Although in the presence of receiving end 20 has foreign matter and feeder ear 10 is judged as locating with receiving end 20 " certain "
In the situation that is coupled to each other (step S16 as shown in Figure 4), the judgement of step S19 through this embodiment can two degree of confirmations confessions
Whether electric end 10 is with receiving end 20 still in the situation that is coupled to each other.Such as: in the presence of receiving end 20 has foreign matter, foreign matter
The transmission voltage detection circuit 121 of detecting control circuit 12 can judge once again whether voltage vcc s is greater than or equal to 4V.Once Fig. 4
Shown step S19's is judged as YES, and represents feeder ear 10 and receiving end 20 becomes each other not from original situation that is coupled to each other
Coupling situation.
In the presence of receiving end 20 has foreign matter and feeder ear 10 and receiving end 20 " certain " are judged as in that
This coupling situation (step S16 as shown in Figure 4), the judgement of step S19 through this embodiment can two degree (or held with recycling
It is continuous) confirm feeder ear 10 and receiving end 20 whether still with the presence of foreign matter.When being judged as NO for step S19 shown in Fig. 4, represent
Receiving end 20 is still with the presence of foreign matter.Therefore, the power-supply system 200 with foreign matter detecting function of the present embodiment can be returned to such as figure
Step S18A and/or step S18B shown in 4, at this point, pull-up circuit 30 continues to the electrical transfer node at self-powered end 10
CCS provides low current (implying that supply electric current Ic) to receiving end 20, thus continues to prevent receiving end 20 from corroding or damaging.Institute as above
It states, in one embodiment, the level of this supply electric current Ic is such as, but not limited to be 1 μ A.
In one embodiment, it is judged as in feeder ear 10 and receiving end 20 " certain " in situation (such as Fig. 4 that is coupled to each other
Shown step S16) (this means, when voltage vcc s is between 0.8V~2.6V, please refer to Fig. 5 A and Fig. 5 B) and pull-up electricity
The electrical transfer node CCS that road 30 continues to self-powered end 10 provides high current to the receiving end (step as shown in Figure 4
S17 under the premise of), the power-supply system 200 with foreign matter detecting function of the present embodiment can determine whether feeder ear 10 and receiving end 20
Whether (as shown in Figure 4 step for electric energy transmission communication (power delivery communication) each other if failing
S20)." the electric energy transmission communication " in relation to communicating by CC pin, and can make to power for example corresponding in USB PD specification
It communicates with each other mutual power/provided by electric energy power and demand, and after realizing agreement by feeder ear 10 with receiving end 20 at end 10
Specific voltage and/or electric current give receiving end 20.
When being judged as YES for step S20 shown in Fig. 4, receiving end 20 is represented with the presence of foreign matter, having for the present embodiment is different
The power-supply system 200 of object detecting function can return to step S18A and/or step S18B as shown in Figure 4, at this point, pull-up circuit 30
The electrical transfer node CCS at self-powered end 10, which changes, provides low current to receiving end 20, thus prevents receiving end 20 from corroding or damaging.
Here so-called " change and provide low current " is referring to that the level by the supply electric current Ic of script is reduced to 1 μ from 330 μ A
A (step S18A as shown in Figure 4).
Although it is worth noting that, when voltage vcc s is between second voltage and tertiary voltage (such as between 0.8V
When~2.6V), it represents receiving end 20 and exists without any foreign matter.However, the present invention has the advantages that one is big, to prevent Fig. 4 institute
The judgement of the step S16 shown is " false positive (false positive) ", it is, such as feelings existing for multiple foreign matter path
Under condition (foreign matter there are the case where) such as, but not limited in 1B or 1C figure, although being still judged as by the range of voltage vcc s
In normal range (NR) (such as between 0.8V~2.6V), however since foreign matter is implicitly present in, feeder ear 10 and receiving end 20 that
Electric energy transmission communication between this may fail, and thus the present invention can further determine that the presence or absence of foreign matter, improve foreign matter
The ability of detecting.
Therefore, can whether really not any with two degree of confirmation receiving ends 20 by the judgement of step S20 shown in Fig. 4
Foreign matter exists.When being judged as YES for step S20 shown in Fig. 4, the power supply system with foreign matter detecting function of the present embodiment is represented
System 200 judges that the transmission of the electric energy between feeder ear 10 and receiving end 20 communicates (power delivery
Communication) no longer valid (step S20 as shown in Figure 4), in this way, which the present embodiment there is foreign matter to detect function
The power-supply system 200 of energy can take corresponding solution, it is, returning to step S18A and/or step as shown in Figure 4
Thus S18B prevents at this point, the electrical transfer node CCS at 30 self-powered end 10 of pull-up circuit, which changes, provides low current to receiving end 20
The only corrosion of receiving end 20 or damage.
Please continue to refer to Fig. 2A, in one embodiment, in the presence of receiving end 20 is determined as having foreign matter, foreign matter detecting control
12 controllable power converter 11 of circuit makes it for example stop output supply voltage VBUS, different in having to avoid High-current output
Coffret existing for object or aqueous vapor and cause to damage.
In conclusion foreign matter method for detecting of the invention can be summarized simply as follows following step: supply for a viewpoint
Electrical transmission node CCS provides a low current (such as the level of supply electric current Ic is 1 μ A)；And when judge receiving end 20 whether coupling
It is connected to feeder ear 10 and foreign to exist, changes in electrical transfer node CCS and a high current (such as the level of supply electric current Ic is provided
For 330 μ A), otherwise continue to provide low current (namely 1 μ A) in electrical transfer node CCS to avoid corrosion.And one
In embodiment, judge receiving end 20 whether be coupled to feeder ear 10 and foreign there are the step of include: to judge electrical transfer section
Whether a voltage vcc s of point CCS is within a voltage range；When the voltage vcc s of electrical transfer node CCS is between voltage
Within the scope of (such as within the scope of cV to dV above-mentioned), then judge that receiving end 20 is coupled to feeder ear 10 and foreign exists；With
And when the voltage of electrical transfer node CCS is beyond except voltage range, then judge that receiving end 20 is not coupled to feeder ear 10 or has
Foreign matter exists.
Illustrate the present invention for preferred embodiment above, but described above, is only easy to those skilled in the art
Understand the contents of the present invention, interest field not for the purpose of limiting the invention.Under same spirit of the invention, art technology
Personnel are contemplated that various equivalence changes.For example, can plant not influences the main function of circuit between the shown circuit element being directly connected to
The circuit element of energy, such as switch.All this kind, according to the present invention can all teach and analogize and obtain.In addition, illustrated is each
Embodiment, however it is not limited to be used alone, such as, but not limited to two embodiments can also be used in combination with combined application.Therefore, of the invention
Range should cover above-mentioned and other all equivalence changes.In addition, any implementation kenel of the invention necessarily realize it is all
Purpose or advantage, therefore, any one of claim also should not be as limits.
Claims (23)
1. a kind of foreign matter method for detecting, for whether detecting the receiving end between a feeder ear and a receiving end with the presence of foreign matter,
The feeder ear is connect with the receiving end by a cable, which includes a positive supply transmission line, a negative supply transmission line and one
Signal transmssion line, wherein the feeder ear has an electrical transfer node, which has one by electrical transmission node, which passes
Defeated line is in the electrical transfer node and should be included following by one transmission signal of transmission, the foreign matter method for detecting between electrical transmission node
Step:
(A) the electrical transfer node provide a low current, judge the electrical transfer node of the feeder ear a voltage whether
Greater than or equal to a first voltage；
(B1) it when step (A) is judged as YES, represents the feeder ear and the receiving end is in and does not couple situation each other, at this point, into
Step (B2)；(B2) low current is provided to the receiving end from the electrical transfer node of the feeder ear；
(C) it when step (A) is judged as NO, represents the feeder ear and the receiving end " preliminary " is judged as being in the shape that is coupled to each other
Condition, at this point, providing a high current to the receiving end from the electrical transfer node of the feeder ear, wherein the level of the high current
Greater than the level of the low current；
(D) in the feeder ear and the receiving end " preliminary " it is judged as being in the situation that is coupled to each other and from the power supply of the feeder ear
Under the premise of transmission node provides the high current to the receiving end, the electricity of the electrical transfer node of the feeder ear is judged once again
Whether pressure is between a second voltage and a tertiary voltage, wherein the level of the first voltage is greater than the position of the second voltage
Standard, the level of the second voltage are greater than the level of the tertiary voltage, and the level of the tertiary voltage is greater than zero；
(E) it when step (D) is judged as YES, represents the feeder ear and the receiving end " certain " is judged as being in the shape that is coupled to each other
Condition, at this point, continuing to provide the high current to the receiving end from the electrical transfer node of the feeder ear；And
(F1) when step (D) is judged as NO, the receiving end is represented with the presence of foreign matter, at this point, entering step (F2)；
(F2) change from the electrical transfer node of the feeder ear and provide the low current to the receiving end, thus prevent the receiving end from becoming rusty
Erosion is damaged.
2. foreign matter method for detecting according to claim 1, wherein electrical transfer section from the feeder ear of step (F2)
Point changes the offer low current to receiving end
Change the low current that a constant type is provided to the receiving end from the electrical transfer node of the feeder ear.
3. foreign matter method for detecting according to claim 1, wherein electrical transfer section from the feeder ear of step (F2)
Point changes the offer low current to receiving end
Change the electric current for the pulse wave formula that provides to the receiving end from the electrical transfer node of the feeder ear.
4. foreign matter method for detecting according to claim 1, wherein in the receiving end with the presence of foreign matter and from the feeder ear
Under the premise of the electrical transfer node changes offer low current to the receiving end:
(G) judge whether the voltage of the electrical transfer node of the feeder ear is greater than or equal to the first voltage once again.
5. foreign matter method for detecting according to claim 4, wherein when step (G) is judged as YES, represent the feeder ear with should
Receiving end is in and does not couple situation each other, at this point, returning to B2.
6. foreign matter method for detecting according to claim 4, wherein when step (G) is judged as NO, represent the receiving end have it is different
Object exists, at this point, returning to step (F2).
7. foreign matter method for detecting according to claim 1, wherein be judged as in the feeder ear and the receiving end " certain "
In the situation that is coupled to each other and continue to provide the high current to the receiving end from the electrical transfer node of the feeder ear
Under the premise of:
(H) judge that the electric energy transmission between the feeder ear and the receiving end communicates whether to fail.
8. foreign matter method for detecting according to claim 7, wherein when step (H) is judged as YES, represent the receiving end have it is different
Object exists, at this point, returning to step (F2).
9. a kind of power-supply system with foreign matter detecting function, it includes a power supply that this, which has the power-supply system of foreign matter detecting function,
End, a receiving end and a cable, the feeder ear are connect with the receiving end by the cable, this has the power supply of foreign matter detecting function
Whether system is used to detect the receiving end between the feeder ear and the receiving end with the presence of foreign matter, wherein the cable includes one just
Power transmission line, a negative supply transmission line and a signal transmssion line, wherein the feeder ear has an electrical transfer node, should be by electricity
End has one by electrical transmission node, and the signal transmssion line is in the electrical transfer node and should be passed by transmission one between electrical transmission node
Defeated signal, there is the power-supply system of foreign matter detecting function to include for this:
The feeder ear, comprising:
One power adapter supplies control signal according to a power supply, provides a supply voltage to the receiving end；
One foreign matter detecting control circuit generates power supply supply control signal, to control the power adapter, and, which detects
Control circuit is surveyed according to a voltage of the electrical transfer node of the feeder ear, a foreign matter detection control signal is generated, thus sentences
Whether the receiving end break with the presence of foreign matter；And
One pull-up circuit is adaptively adjusted from the electrical transfer node of the feeder ear and mentions according to the foreign matter detection control signal
It is supplied to the level of a supply electric current of the receiving end.
10. the power-supply system according to claim 9 with foreign matter detecting function, wherein the foreign matter detecting control circuit
Include:
One transmission voltage detection circuit, voltage of the electrical transfer node to detect the feeder ear, to generate a power supply
Transmit voltage level signal；And
One adjustment circuit, to generate the foreign matter detection control signal according to the electrical transfer voltage level signal.
11. the power-supply system according to claim 9 with foreign matter detecting function, wherein the pull-up circuit includes:
One pull-up voltage source, to provide pull-up voltage on one；And
One pull-up current source, the electrical transfer from the feeder ear is adaptively adjusted according to the foreign matter detection control signal
Node is provided to the level of the supply electric current of the receiving end.
12. the power-supply system according to claim 9 with foreign matter detecting function, wherein the pull-up circuit includes:
One pull-up voltage source, to provide pull-up voltage on one；And
One pull-up resistor, the electrical transfer section from the feeder ear according to the foreign matter detection control signal, is adaptively adjusted
Point is provided to the level of the supply electric current of the receiving end.
13. the power-supply system according to claim 10 with foreign matter detecting function, wherein the foreign matter detecting control circuit
According to the voltage of the electrical transfer node of the feeder ear, the foreign matter detection control signal is generated, thus judges the receiving end
Whether have method existing for foreign matter the following steps are included:
(A) the electrical transfer node provide a low current, the transmission voltage detection circuit judge the feeder ear this for fax
Whether the voltage of defeated node is greater than or equal to a first voltage；
(B1) it when step (A) is judged as YES, represents the feeder ear and the receiving end is in and does not couple situation each other, at this point, into
Step (B2)；
(B2) pull-up circuit provides the low current to the receiving end from the electrical transfer node of the feeder ear；
(C) it when step (A) is judged as NO, represents the feeder ear and the receiving end " preliminary " is judged as being in the shape that is coupled to each other
Condition, at this point, the pull-up circuit provides a high current to the receiving end from the electrical transfer node of the feeder ear, wherein the height
The level of electric current is greater than the level of the low current；
(D) it is judged as being in the situation that is coupled to each other in the feeder ear and the receiving end " preliminary " and the pull-up circuit is from the power supply
Under the premise of the electrical transfer node at end provides the high current to the receiving end, which judges once again should
Whether the voltage of the electrical transfer node of feeder ear is between a second voltage and a tertiary voltage, wherein this first
The level of voltage is greater than the level of the second voltage, and the level of the second voltage is greater than the level of the tertiary voltage, third electricity
The level of pressure is greater than zero；
(E) it when step (D) is judged as YES, represents the feeder ear and the receiving end " certain " is judged as being in the shape that is coupled to each other
Condition, at this point, the pull-up circuit continues to provide the high current to the receiving end from the electrical transfer node of the feeder ear；With
And
(F1) when step (D) is judged as NO, the receiving end is represented with the presence of foreign matter, at this point, entering step (F2)；
(F2) pull-up circuit changes from the electrical transfer node of the feeder ear provides the low current to the receiving end, thus prevents
Receiving end corrosion is damaged.
14. the power-supply system according to claim 13 with foreign matter detecting function, wherein the pull-up electricity of step (F2)
Road changes the offer low current to receiving end from the electrical transfer node of the feeder ear
The pull-up circuit changes the low current for providing a constant type to the receiving end from the electrical transfer node of the feeder ear.
15. the power-supply system according to claim 13 with foreign matter detecting function, wherein the pull-up electricity of step (F2)
Road changes the offer low current to receiving end from the electrical transfer node of the feeder ear
The pull-up circuit changes the electric current for the pulse wave formula that provides to the receiving end from the electrical transfer node of the feeder ear.
16. the power-supply system according to claim 13 with foreign matter detecting function, wherein there is foreign matter to deposit in the receiving end
And the pull-up circuit from the electrical transfer node of the feeder ear change provide the low current to the receiving end under the premise of:
(G) the transmission voltage detection circuit judges whether the voltage of the electrical transfer node of the feeder ear is higher than or waits once again
In the first voltage.
17. the power-supply system according to claim 16 with foreign matter detecting function, wherein when step (G) is judged as YES,
It represents the feeder ear and the receiving end is in and does not couple situation each other, at this point, returning to step (B2).
18. the power-supply system according to claim 16 with foreign matter detecting function, wherein when step (G) is judged as NO,
The receiving end is represented with the presence of foreign matter, at this point, returning to step (F2).
19. the power-supply system according to claim 13 with foreign matter detecting function, wherein in the feeder ear and be somebody's turn to do by electricity
End " certain " is judged as in the situation that is coupled to each other and the pull-up circuit continues to the electrical transfer section from the feeder ear
Under the premise of point provides the high current to the receiving end:
(H) judge that the electric energy transmission between the feeder ear and the receiving end communicates whether to fail.
20. the power-supply system according to claim 19 with foreign matter detecting function, wherein when step (H) is judged as YES,
The receiving end is represented with the presence of foreign matter, at this point, returning to step (F2).
21. a kind of foreign matter method for detecting, for whether detecting the receiving end between a feeder ear and a receiving end with the presence of foreign matter,
The feeder ear is connect with the receiving end by a cable, which includes a positive supply transmission line, a negative supply transmission line and one
Signal transmssion line, wherein the feeder ear has an electrical transfer node, which has one by electrical transmission node, which passes
Defeated line is in the electrical transfer node and should be included following by one transmission signal of transmission, the foreign matter method for detecting between electrical transmission node
Step:
A low current is provided in the electrical transfer node；And
When judging whether the receiving end is coupled to the feeder ear and foreign exists, change the high electricity of offer one in the electrical transfer node
Stream, otherwise continues to provide the low current in the electrical transfer node to avoid corrosion.
22. foreign matter method for detecting according to claim 21, wherein this judges whether the receiving end is coupled to the feeder ear
And foreign there are the step of include:
Judge a voltage of the electrical transfer node whether within a voltage range；
When the voltage of the electrical transfer node is then to judge that the receiving end is coupled to the feeder ear within the voltage range
And foreign exists；And
When the voltage of the electrical transfer node is beyond except the voltage range, then judge that the receiving end is not coupled to the feeder ear
Or with the presence of foreign matter.
23. foreign matter method for detecting according to claim 22, wherein the foreign matter method for detecting also comprises the steps of
(A) provide the low current in the electrical transfer node, judge the electrical transfer node of the feeder ear the voltage whether
Greater than or equal to a first voltage；
(B1) it when step (A) is judged as YES, represents the feeder ear and the receiving end is in and does not couple situation each other, at this point, into
Step (B2)；(B2) low current is provided to the receiving end from the electrical transfer node of the feeder ear；
(C) it when step (A) is judged as NO, represents the feeder ear and the receiving end " preliminary " is judged as being in the shape that is coupled to each other
Condition, at this point, providing the high current to the receiving end from the electrical transfer node of the feeder ear, wherein the level of the high current
Greater than the level of the low current；
(D) in the feeder ear and the receiving end " preliminary " it is judged as being in the situation that is coupled to each other and from the power supply of the feeder ear
Under the premise of transmission node provides the high current to the receiving end, the electricity of the electrical transfer node of the feeder ear is judged once again
Whether pressure is between a second voltage and a tertiary voltage, wherein the level of the first voltage is greater than the position of the second voltage
Standard, the level of the second voltage are greater than the level of the tertiary voltage, and the level of the tertiary voltage is greater than zero；
(E) it when step (D) is judged as YES, represents the feeder ear and the receiving end " certain " is judged as being in the shape that is coupled to each other
Condition, at this point, continuing to provide the high current to the receiving end from the electrical transfer node of the feeder ear；And
(F1) when step (D) is judged as NO, the receiving end is represented with the presence of foreign matter, at this point, entering step (F2)；
(F2) change from the electrical transfer node of the feeder ear and provide the low current to the receiving end, thus prevent the receiving end from becoming rusty
Erosion is damaged.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15/996,516 US10705497B2 (en) | 2017-06-21 | 2018-06-03 | Foreign object detection method and power system capable of detecting foreign object |
| US16/882,500 US11137733B2 (en) | 2017-06-21 | 2020-05-24 | Foreign object detection method and power system capable of detecting foreign object |
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