CN103558483B - Charging equipment zero load detection method, device, MCU and power supply unit connecting line - Google Patents
Charging equipment zero load detection method, device, MCU and power supply unit connecting line Download PDFInfo
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- CN103558483B CN103558483B CN201310578046.7A CN201310578046A CN103558483B CN 103558483 B CN103558483 B CN 103558483B CN 201310578046 A CN201310578046 A CN 201310578046A CN 103558483 B CN103558483 B CN 103558483B
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Abstract
The embodiment of the present invention provides a kind of charging equipment zero load detection method, device, MCU and power supply unit connecting line, wherein method is applied to be arranged in the MCU chip of power supply unit connecting line, and described method includes: receive the voltage signal of the first resistance after the second electric resistance partial pressure that feedback link line is fed back to；Wherein, on the ground wire of the general-purpose serial bus USB wire that described first resistance is arranged at described power supply unit connecting line, described feedback link line one end is connected between positive pole data wire and the ground wire of described USB wire, the other end connects with described MCU chip, one end of described second resistance is connected between the two ends of described feedback link line, and the other end connects with ground；Determine the magnitude of voltage of described voltage signal；When described magnitude of voltage is zero, determine that the charging equipment being connected with described power supply unit connecting line is in Light Condition.The embodiment of the present invention connects line end at power supply unit and achieves the unloaded detection of charging equipment.
Description
Technical field
The present invention relates to electronic technology field, more particularly, it relates to a kind of charging equipment zero load detection side
Method, device, MCU and power supply unit connecting line.
Background technology
Power supply unit connecting line refers to connect power supply unit and charging equipment, is transmitted by power supply unit by electric current
To the connecting line of charging equipment, current power supply unit connecting line, in addition to having charge function, also has number
According to transfer function；The data transmission of power supply unit connecting line and the realization of charge function are generally based on USB
(Universal Serial Bus, USB) technology.
The mode that detection charging equipment is unloaded at present is mainly the power management chip built-in by charging equipment
Carry out, when power management chip is at the electricity that battery receptacle charging equipment being detected inputs to the external world,
Then determine that charging equipment connection has external power supply unit, be not at Light Condition, otherwise, it is determined that charging
Equipment has been not connected to external power supply unit, is in Light Condition.
The present inventor finds during realizing the present invention: although prior art has multiple detection
The mode that charging equipment is unloaded, but these detection modes are all carried out at charging equipment end, the most also
There is no a kind of technology the most unloaded at power supply unit connection line end detection charging equipment, therefore provide a kind of
Charging equipment zero load detection method, so that power supply unit connecting line has the merit that detection charging equipment is unloaded
Can, become those skilled in the art's urgent problem.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of charging equipment zero load detection method, device, MCU
And power supply unit connecting line, to solve existing power supply unit connecting line, not have detection charging equipment unloaded
The problem of function.
For achieving the above object, the following technical scheme of embodiment of the present invention offer:
A kind of charging equipment zero load detection method, is applied to be arranged at the microcontroller list of power supply unit connecting line
In unit's MCU chip, described method includes:
Receive the voltage signal of the first resistance after the second electric resistance partial pressure that feedback link line is fed back to；
Wherein, described first resistance is arranged at the general-purpose serial bus USB wire of described power supply unit connecting line
On ground wire, described feedback link line one end is connected between positive pole data wire and the ground wire of described USB wire,
The other end connects with described MCU chip, and one end of described second resistance is connected to described feedback link line
Between two ends, the other end connects with ground；
Determine the magnitude of voltage of described voltage signal；
When described magnitude of voltage is zero, determine that the charging equipment being connected with described power supply unit connecting line is in
Light Condition.
Wherein, described method also includes:
When determining that described charging equipment is in Light Condition, to the prompting electricity connected with described MCU chip
Road output cue.
Wherein, described method also includes:
Receive electrification reset circuit automatic with the MCU that described MCU chip connects output automatic on reply by cable
Position signal；
Automatic power on reset operation is performed according to described automatic power-on reset signal.
The embodiment of the present invention also provides for a kind of charging equipment zero load detection device, is applied to be arranged at power supply and sets
In the micro-control unit MCU chip of standby connecting line, described method includes:
First receiver module, for receive that feedback link line fed back to after the second electric resistance partial pressure the
The voltage signal of one resistance；Wherein, described first resistance is arranged at the general of described power supply unit connecting line
On the ground wire of serial bus USB wire, described feedback link line one end is just being connected to described USB wire
Between pole data wire and ground wire, the other end connects with described MCU chip, and one end of described second resistance is even
Being connected between the two ends of described feedback link line, the other end connects with ground；
Magnitude of voltage determines module, for determining the magnitude of voltage of described voltage signal；
Zero load determines module, for when described magnitude of voltage is zero, determines and described power supply unit connecting line
The charging equipment being connected is in Light Condition.
Wherein, described device also includes:
Prompting output module, for when determining that described charging equipment is in Light Condition, to described MCU
The cue circuit output cue that chip connects.
Wherein, described device also includes:
Second receiver module, for receiving electrification reset automatic with the MCU that described MCU chip connects electricity
The automatic power-on reset signal of road output；
Automatically electrification reset module, for performing automatic electrification reset according to described automatic power-on reset signal
Operation.
The embodiment of the present invention also provides for a kind of micro-control unit MCU chip, sets including charging described above
Standby unloaded detection device.
The embodiment of the present invention also provides for a kind of power supply unit connecting line, including: connecting line input connector；
Connecting line output connecting head；Connect described connecting line input connector and described connecting line output connecting head
General-purpose serial bus USB wire；First resistance；Second resistance；Feedback link line；Micro-control unit
MCU chip；
Wherein, the first resistance is arranged on the ground wire of described USB wire；
Described feedback link line one end is connected between positive pole data wire and the ground wire of described USB wire, separately
One end connects with described MCU chip,；
One end of described second resistance is connected between the two ends of described feedback link line, the other end and ground phase
Connect；
Described MCU chip connects with described feedback link line, and described MCU chip is described above
MCU chip.
Wherein, described power supply unit connecting line also includes:
Connect with described MCU chip, when described charging equipment is in Light Condition, receive described MCU
The cue of chip output, performs the cue circuit of prompting operation.
Wherein, described MCU chip is STM8S103T6 chip.
Based on technique scheme, the charging equipment zero load detection method that the embodiment of the present invention provides, pass through
Be arranged at power supply unit connecting line MCU chip receive feedback link line fed back to through the second resistance
The voltage signal of the first resistance after dividing potential drop, determines the magnitude of voltage of described voltage signal, at described magnitude of voltage
When being zero, it may be determined that the charging equipment being connected with described power supply unit connecting line is in Light Condition.This
Bright embodiment connects line end at power supply unit and achieves the unloaded detection of charging equipment.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that below,
Accompanying drawing in description is some embodiments of the present invention, for those of ordinary skill in the art, not
On the premise of paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The flow chart of the charging equipment zero load detection method that Fig. 1 provides for the embodiment of the present invention；
Another flow chart of the charging equipment zero load detection method that Fig. 2 provides for the embodiment of the present invention；
The structured flowchart of the charging equipment zero load detection device that Fig. 3 provides for the embodiment of the present invention；
Another structured flowchart of the charging equipment zero load detection device that Fig. 4 provides for the embodiment of the present invention；
The structural representation of the power supply unit connecting line that Fig. 5 provides for the embodiment of the present invention；
Another structural representation of the power supply unit connecting line that Fig. 6 provides for the embodiment of the present invention.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with this
Accompanying drawing in bright embodiment, is clearly and completely described the technical scheme in the embodiment of the present invention,
Obviously, described embodiment is a part of embodiment of the present invention rather than whole embodiments.Based on
Embodiment in the present invention, those of ordinary skill in the art are obtained under not making creative work premise
The every other embodiment obtained, broadly falls into the scope of protection of the invention.
The flow chart of the charging equipment zero load detection method that Fig. 1 provides for the embodiment of the present invention, the method should
For being arranged at the MCU(Micro Control Unit of power supply unit connecting line, micro-control unit) chip
On, with reference to Fig. 1, the method may include that
The first resistance after the second electric resistance partial pressure that step S100, reception feedback link line are fed back to
Voltage signal；
Optionally, the wire of power supply unit connecting line can be USB wire, and the first resistance may be disposed at
On the ground wire of USB wire；One end of feedback link line is connected to positive pole data wire and the ground wire of USB wire
Between, the other end connects with MCU chip；One end of second resistance be connected to feedback link line two ends it
Between, the other end connects with ground.
Step S200, determine the magnitude of voltage of described voltage signal；
Step S300, when described magnitude of voltage is zero, determine and filling that described power supply unit connecting line is connected
Electricity equipment is in Light Condition.
When power supply unit connecting line connects with charging equipment, the electricity of the first resistance being arranged between ground wire
Pressure signal can feed back to MCU chip by the connecting line being connected with positive pole data wire so that MCU chip
The magnitude of voltage detected is not zero, and therefore can determine when the magnitude of voltage that MCU chip is detected is not zero
Power supply unit connecting line connects with charging equipment；When power supply unit connecting line disconnects with charging equipment,
The voltage signal of the first resistance being arranged between ground wire disappears, and the magnitude of voltage that MCU chip is detected is zero,
Now can determine that power supply unit connecting line disconnects with charging equipment, charging equipment is in Light Condition.
Another flow chart of the charging equipment zero load detection method that Fig. 2 provides for the embodiment of the present invention, in conjunction with
Shown in Fig. 1 and Fig. 2, shown in Fig. 2, method is on the basis of method shown in Fig. 1, also includes:
Step S400, when determining that described charging equipment is in Light Condition, to described MCU chip
The cue circuit output cue connected.
Cue circuit is after receiving cue, by execution prompting operation, in order to user knows charging and sets
For being currently at Light Condition.
Optionally, the charging equipment zero load detection method that the embodiment of the present invention provides can also include walking as follows
Rapid: receive electrification reset circuit automatic with the MCU that described MCU chip connects output automatic on reply by cable
Position signal, performs automatic power on reset operation according to described automatic power-on reset signal.
The charging equipment zero load detection method that the embodiment of the present invention provides, connects by being arranged at power supply unit
The first resistance after the second electric resistance partial pressure that the MCU chip reception feedback link line of line is fed back to
Voltage signal, determines the magnitude of voltage of described voltage signal, when described magnitude of voltage is zero, it may be determined that with institute
The charging equipment stating power supply unit connecting line connected is in Light Condition.The embodiment of the present invention is at power supply unit
Connect line end and achieve the unloaded detection of charging equipment.
The charging equipment zero load detection device provided the embodiment of the present invention below is introduced, and is described below
Charging equipment zero load detection device and above-described charging equipment zero load detection method can the most corresponding join
According to.
The structured flowchart of the charging equipment zero load detection device that Fig. 3 provides for the embodiment of the present invention, this charging
Equipment zero load detection device is applied to be arranged in the MCU chip of power supply unit connecting line, with reference to Fig. 3,
This charging equipment zero load detection device may include that
First receiver module 100, for receive that feedback link line fed back to after the second electric resistance partial pressure
The voltage signal of the first resistance；
Wherein, described first resistance is arranged at the general-purpose serial bus USB of described power supply unit connecting line and leads
On the ground wire of line, described feedback link line one end is connected to positive pole data wire and the ground wire of described USB wire
Between, the other end connects with described MCU chip, and one end of described second resistance is connected to described feedback even
Between the two ends of wiring, the other end connects with ground；
Magnitude of voltage determines module 200, for determining the magnitude of voltage of described voltage signal；
Zero load determines module 300, for when described magnitude of voltage is zero, determines and is connected with described power supply unit
The charging equipment that line is connected is in Light Condition.
Another structured flowchart of the charging equipment zero load detection device that Fig. 4 provides for the embodiment of the present invention, knot
Closing shown in Fig. 3 and Fig. 4, this charging equipment zero load detection device can also include:
Prompting output module 400, for when determining that described charging equipment is in Light Condition, to described
The cue circuit output cue that MCU chip connects.
Optionally, charging equipment zero load shown in Fig. 3 detection device can also include: the second receiver module and
Automatically electrification reset module；
Wherein, the second receiver module, automatically power on for receiving the MCU connected with described MCU chip
The automatic power-on reset signal of reset circuit output；
Automatically electrification reset module, for performing automatic electrification reset according to described automatic power-on reset signal
Operation.
Optionally, charging equipment zero load shown in Fig. 4 detection device can also include the second receiver module and from
Dynamic electrification reset module.
The charging equipment zero load detection device that the embodiment of the present invention provides, connects by being arranged at power supply unit
The first resistance after the second electric resistance partial pressure that the MCU chip reception feedback link line of line is fed back to
Voltage signal, determines the magnitude of voltage of described voltage signal, when described magnitude of voltage is zero, it may be determined that with institute
The charging equipment stating power supply unit connecting line connected is in Light Condition.The embodiment of the present invention is at power supply unit
Connect line end and achieve the unloaded detection of charging equipment.
The embodiment of the present invention also provides for a kind of MCU chip, including charging equipment zero load detection described above
Device, the description of charging equipment zero load detection device can refer to the description of corresponding part above, the most no longer
Repeat.
The power supply unit connecting line provided the embodiment of the present invention below is introduced, power supply described below
Interfacility link relates to the part of MCU chip can reference corresponding with above-described MCU chip.
The structural representation of the power supply unit connecting line that Fig. 5 provides for the embodiment of the present invention, with reference to Fig. 5, should
Power supply unit connecting line may include that connecting line inputs connector 1, connecting line output connecting head 2, USB
Wire 3, the first resistance R1, the second resistance R2, feedback link line, MCU chip 4；
Wherein, connecting line input connector 1 can be used for connecting with power supply unit, to realize supply current
Input；Optionally, connecting line input connector 1 can be attaching plug, for connecting with socket, real
The input of existing supply current；Connecting line input connector 1 can also be the electric current input adapter of adapter；
Connecting line output connecting head 2 can be used for connecting with charging equipment, so that supply current is conveyed into charging
In equipment, it is achieved the charging to charging equipment；
Connecting line is inputted connector 1 by USB wire 3 and connecting line output connecting head 2 couples together, real
Existing supply current is by the transmission of connecting line input connector 1 to connecting line output connecting head 2；USB simultaneously
Wire 3 also can realize data-transformation facility；
First resistance R1 is arranged on the ground wire of USB wire 3；
One end of feedback link line is connected between positive pole data wire and the ground wire of USB wire 3, the other end
Connect with MCU chip 4；
One end of second resistance R2 is connected between the two ends of described feedback link line, the other end and ground phase
Connect；
The voltage signal of the first resistance R1 passes through described feedback link line, after the second resistance R2 dividing potential drop,
Transmission is to MCU chip 4；
MCU chip 4 connects with described feedback link line, and MCU chip can be mentioned above including
The MCU chip of charging equipment zero load detection device described above；
MUC chip 4 can be used for receiving after the second electric resistance partial pressure first that feedback link line is fed back to
The voltage signal of resistance, determines the magnitude of voltage of described voltage signal, when described magnitude of voltage is zero, determines
The charging equipment being connected with described power supply unit connecting line is in Light Condition.
The power supply unit connecting line that the embodiment of the present invention provides, receives feedback link line institute by MCU chip
The voltage signal of the first resistance after the second electric resistance partial pressure fed back to, when described magnitude of voltage is zero,
Determine that charging equipment is in Light Condition, it is achieved that connect whether line end is charged equipment at power supply unit
Unloaded detection.
Another structural representation of the power supply unit connecting line that Fig. 6 provides for the embodiment of the present invention, in conjunction with Fig. 5
Shown in Fig. 6, on the basis of power supply unit connecting line shown in Fig. 5, power supply unit shown in Fig. 6 connects
Line also includes: cue circuit 5 and automatic electrification reset circuit 6；
Wherein, cue circuit 5 connects with MCU chip 4, when described charging equipment is in Light Condition,
Receive the cue of MCU chip 4 output, perform prompting operation；
Automatically electrification reset circuit 6 connects with MCU chip 4, can send on automatically to MCU chip 4
Reset signal, so that MCU chip 4 performs automatic electrification reset according to described automatic power-on reset signal
Operation.
The prompting mode of the embodiment of the present invention can be auditory tone cues, it is also possible to be light prompt.Prompting electricity
Road can be audible alarm circuit, and/or, optical alarm circuit.
The embodiment of the present invention achieves and is charged, at power supply unit connection line end, the inspection that equipment is the most unloaded
Survey.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses
The present invention.Multiple amendment to these embodiments will be aobvious and easy for those skilled in the art
See, generic principles defined herein can without departing from the spirit or scope of the present invention,
Realize in other embodiments.Therefore, the present invention is not intended to be limited to the embodiments shown herein,
And it is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (10)
1. a charging equipment zero load detection method, it is characterised in that be applied to be arranged at power supply unit even
In the micro-control unit MCU chip of wiring, described method includes:
Receive the voltage signal of the first resistance after the second electric resistance partial pressure that feedback link line is fed back to；
Wherein, described first resistance is arranged at the general-purpose serial bus USB wire of described power supply unit connecting line
On ground wire, described feedback link line one end is connected between positive pole data wire and the ground wire of described USB wire,
The other end connects with described MCU chip, and one end of described second resistance is connected to described feedback link line
Between two ends, the other end connects with ground；
Determine the magnitude of voltage of described voltage signal；
When described magnitude of voltage is zero, determine that the charging equipment being connected with described power supply unit connecting line is in
Light Condition.
Method the most according to claim 1, it is characterised in that also include:
When determining that described charging equipment is in Light Condition, to the prompting electricity connected with described MCU chip
Road output cue.
Method the most according to claim 1, it is characterised in that also include:
Receive electrification reset circuit automatic with the MCU that described MCU chip connects output automatic on reply by cable
Position signal；
Automatic power on reset operation is performed according to described automatic power-on reset signal.
4. a charging equipment zero load detection device, it is characterised in that be applied to be arranged at power supply unit even
In the micro-control unit MCU chip of wiring, described device includes:
First receiver module, for receive that feedback link line fed back to after the second electric resistance partial pressure the
The voltage signal of one resistance；Wherein, described first resistance is arranged at the general of described power supply unit connecting line
On the ground wire of serial bus USB wire, described feedback link line one end is just being connected to described USB wire
Between pole data wire and ground wire, the other end connects with described MCU chip, and one end of described second resistance is even
Being connected between the two ends of described feedback link line, the other end connects with ground；
Magnitude of voltage determines module, for determining the magnitude of voltage of described voltage signal；
Zero load determines module, for when described magnitude of voltage is zero, determines and described power supply unit connecting line
The charging equipment being connected is in Light Condition.
Device the most according to claim 4, it is characterised in that also include:
Prompting output module, for when determining that described charging equipment is in Light Condition, to described MCU
The cue circuit output cue that chip connects.
Device the most according to claim 4, it is characterised in that also include:
Second receiver module, for receiving electrification reset automatic with the MCU that described MCU chip connects electricity
The automatic power-on reset signal of road output；
Automatically electrification reset module, for performing automatic electrification reset according to described automatic power-on reset signal
Operation.
7. a micro-control unit MCU chip, it is characterised in that including: claim 4-6 is arbitrary
Charging equipment zero load detection device described in Xiang.
8. a power supply unit connecting line, it is characterised in that including: connecting line input connector；Connect
Line output connecting head；Connect described connecting line input connector and described connecting line output connecting head general
Serial bus USB wire；First resistance；Second resistance；Feedback link line；Micro-control unit MCU
Chip；
Wherein, the first resistance is arranged on the ground wire of described USB wire；
Described feedback link line one end is connected between positive pole data wire and the ground wire of described USB wire, separately
One end connects with described MCU chip；
One end of described second resistance is connected between the two ends of described feedback link line, the other end and ground phase
Connect；
Described MCU chip connects with described feedback link line, and described MCU chip is claim 7 institute
The MCU chip stated.
Power supply unit connecting line the most according to claim 8, it is characterised in that also include:
Connect with described MCU chip, when described charging equipment is in Light Condition, receive described MCU
The cue of chip output, performs the cue circuit of prompting operation.
Power supply unit connecting line the most according to claim 8, it is characterised in that described MCU core
Sheet is STM8S103T6 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310578046.7A CN103558483B (en) | 2013-11-18 | 2013-11-18 | Charging equipment zero load detection method, device, MCU and power supply unit connecting line |
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| CN201310578046.7A CN103558483B (en) | 2013-11-18 | 2013-11-18 | Charging equipment zero load detection method, device, MCU and power supply unit connecting line |
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| CN103558483B true CN103558483B (en) | 2016-08-31 |
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| CN115902490B (en) * | 2022-12-13 | 2023-09-29 | 珠海智融科技股份有限公司 | Detection method and device of charging equipment, electronic equipment and storage medium |
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| CN201937300U (en) * | 2010-12-31 | 2011-08-17 | 崧顺电子（深圳）有限公司 | Charger for realizing input zero power consumption after charge or in no-load standby |
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| CN100437126C (en) * | 2005-10-20 | 2008-11-26 | 鸿富锦精密工业（深圳）有限公司 | Voltage detector of universal serial bus interface |
| US7782022B2 (en) * | 2007-10-19 | 2010-08-24 | Texas Instruments Incorporated | Input source detection for a battery charger |
| JP2011198046A (en) * | 2010-03-19 | 2011-10-06 | Kddi Corp | Repeater and method |
| CN201904513U (en) * | 2010-11-25 | 2011-07-20 | 康佳集团股份有限公司 | Wall body USB (Universal Serial Bus) charging socket |
| JP5901241B2 (en) * | 2011-11-18 | 2016-04-06 | キヤノン株式会社 | USB hub device and system using the same |
| CN202749620U (en) * | 2012-07-25 | 2013-02-20 | 王立平 | Display device used for universal serial bus (USB) data line / power line |
| CN202795619U (en) * | 2012-08-14 | 2013-03-13 | 曾维杰 | Display burglar alarm with no false alarm or failure in report |
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| CN201311448Y (en) * | 2008-10-24 | 2009-09-16 | 南京普天大唐信息电子有限公司 | Solar cell panel no-load voltage detection circuit |
| CN201937300U (en) * | 2010-12-31 | 2011-08-17 | 崧顺电子（深圳）有限公司 | Charger for realizing input zero power consumption after charge or in no-load standby |
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Effective date of registration: 20161024 Address after: 315192 Zhejiang city of Ningbo province Yinzhou District Zhonggongmiao garden building 42, room 505, Metro 12 Patentee after: Gao Liheng Address before: 468, Julong Industrial Park, three Ningbo Road, Hangzhou Bay New District, Zhejiang 315336, China Patentee before: NINGBO HENTEK DRAGON ELECTRONICS CO., LTD. |