CN103558483A - Charging equipment non-load detecting method and device, MCU and power supply equipment connecting wire - Google Patents
Charging equipment non-load detecting method and device, MCU and power supply equipment connecting wire Download PDFInfo
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- CN103558483A CN103558483A CN201310578046.7A CN201310578046A CN103558483A CN 103558483 A CN103558483 A CN 103558483A CN 201310578046 A CN201310578046 A CN 201310578046A CN 103558483 A CN103558483 A CN 103558483A
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- 238000001514 detection method Methods 0.000 claims abstract description 23
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Abstract
The embodiment of the invention provides a charging equipment non-load detecting method and device, an MCU and a power supply equipment connecting wire. The method is applied to an MCU chip of the power supply equipment connecting wire and comprises the steps that a voltage signal of a first resistor is received, wherein the voltage signal is fed back by a feedback connecting wire and the voltage signal undergoes voltage dividing through a second resistor; the first resistor is arranged on a ground wire of a USB wire arranged on the power supply equipment connecting wire, one end of the feedback connecting wire is connected between a positive electrode data line of the USB wire and the ground wire, the other end of the feedback connecting wire is connected with the MCU chip, one end of the second resistor is connected between the two ends of the feedback connecting wire and the other end of the second resistor is grounded; the voltage value of the voltage signal is determined; when the voltage value is zero, charging equipment connected with the power supply equipment connecting wire is determined to be in a non-load state. The charging equipment non-load detecting method and device, the MCU and the power supply equipment connecting wire realize non-load detection of the charging equipment at the end of the power supply equipment connecting wire.
Description
Technical field
The present invention relates to electronic technology field, more particularly, relate to the unloaded detection method of a kind of charging equipment, device, MCU and power-supply unit connecting line.
Background technology
Power-supply unit connecting line refers to and connects power-supply unit and charging equipment, electric current is transferred to the connecting line of charging equipment by power-supply unit, and current power-supply unit connecting line, except having charge function, also has data-transformation facility; The data transmission of power-supply unit connecting line and the realization of charge function are generally based on USB(Universal Serial Bus, USB (universal serial bus)) technology.
The mode that detects at present charging equipment zero load is mainly to be undertaken by the built-in power management chip of charging equipment, when power management chip is when the battery that charging equipment detected receives the electric weight of extraneous input, determine that charging equipment is connected with external power-supply unit, not in light condition, otherwise, determine that charging equipment is not connected with external power-supply unit, in light condition.
The present inventor finds in realizing process of the present invention: although prior art has the mode of multiple detection charging equipment zero load, but these detection modes are all carried out at charging equipment end, do not have at present a kind of in the whether unloaded technology of power-supply unit connection line end detection charging equipment, therefore provide a kind of charging equipment unloaded detection method, so that power-supply unit connecting line has the function that detects charging equipment zero load, become those skilled in the art's urgent problem.
Summary of the invention
In view of this, the embodiment of the present invention provides the unloaded detection method of a kind of charging equipment, device, MCU and power-supply unit connecting line, does not have the problem of the function that detects charging equipment zero load to solve existing power-supply unit connecting line.
For achieving the above object, the embodiment of the present invention provides following technical scheme:
A unloaded detection method, is applied to be arranged on the micro-control unit MCU chip of power-supply unit connecting line, and described method comprises:
The voltage signal of the first resistance after the second electric resistance partial pressure that reception feedback link line feeds back to; Wherein, described the first resistance is arranged on the ground wire of general-purpose serial bus USB wire of described power-supply unit connecting line, described feedback link line one end is connected between the anodal data line and ground wire of described USB wire, the other end and described MCU chip join, one end of described the second resistance is connected between the two ends of described feedback link line, and the other end joins 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 comprises:
At definite described charging equipment during in light condition, to the cue circuit output cue of joining with described MCU chip.
Wherein, described method also comprises:
Receive the automatic power-on reset signal of the automatic electrify restoration circuit output of the MCU joining with described MCU chip;
According to described automatic power-on reset signal, carry out automatic electrification reset operation.
The embodiment of the present invention also provides a kind of charging equipment unloaded pick-up unit, is applied to be arranged on the micro-control unit MCU chip of power-supply unit connecting line, and described method comprises:
The first receiver module, for receiving the voltage signal of the first resistance after the second electric resistance partial pressure that feedback link line feeds back to; Wherein, described the first resistance is arranged on the ground wire of general-purpose serial bus USB wire of described power-supply unit connecting line, described feedback link line one end is connected between the anodal data line and ground wire of described USB wire, the other end and described MCU chip join, one end of described the second resistance is connected between the two ends of described feedback link line, and the other end joins with ground;
Magnitude of voltage determination module, for determining the magnitude of voltage of described voltage signal;
Unloaded determination module, when at described magnitude of voltage being zero, determines that the charging equipment being connected with described power-supply unit connecting line is in light condition.
Wherein, described device also comprises:
Prompting output module, at definite described charging equipment during in light condition, exports cue to the cue circuit joining with described MCU chip.
Wherein, described device also comprises:
The second receiver module, for receiving the automatic power-on reset signal of the automatic electrify restoration circuit output of the MCU joining with described MCU chip;
Automatically electrification reset module, operates for carry out automatic electrification reset according to described automatic power-on reset signal.
The embodiment of the present invention also provides a kind of micro-control unit MCU chip, comprises the unloaded pick-up unit of charging equipment described above.
The embodiment of the present invention also provides a kind of power-supply unit connecting line, comprising: connecting line input connector; Connecting line output connecting head; The general-purpose serial bus USB wire that connects described connecting line input connector and described connecting line output connecting head; The first resistance; The 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 the anodal data line and ground wire of described USB wire, and the other end and described MCU chip join;
One end of described the second resistance is connected between the two ends of described feedback link line, and the other end joins with ground;
Described MCU chip and described feedback link line join, and described MCU chip is MCU chip described above.
Wherein, described power-supply unit connecting line also comprises:
Join with described MCU chip, at described charging equipment, during in light condition, receive the cue of described MCU chip output, carry out the cue circuit of prompting operation.
Wherein, described MCU chip is STM8S103T6 chip.
Based on technique scheme, the unloaded detection method of charging equipment that the embodiment of the present invention provides, by being arranged at the MCU chip of power-supply unit connecting line, receive the voltage signal of the first resistance after the second electric resistance partial pressure that feedback link line feeds back to, determine the magnitude of voltage of described voltage signal, when described magnitude of voltage is zero, can 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 at power-supply unit the zero load detection that line end has been realized charging equipment.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The process flow diagram of the unloaded detection method of charging equipment that Fig. 1 provides for the embodiment of the present invention;
Another process flow diagram of the unloaded detection method of charging equipment that Fig. 2 provides for the embodiment of the present invention;
The structured flowchart of the unloaded pick-up unit of charging equipment that Fig. 3 provides for the embodiment of the present invention;
Another structured flowchart of the unloaded pick-up unit of charging equipment 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.
Embodiment
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The process flow diagram of the unloaded detection method of charging equipment that Fig. 1 provides for the embodiment of the present invention, the method is applied to be arranged at the MCU(Micro Control Unit of power-supply unit connecting line, micro-control unit) on chip, with reference to Fig. 1, the method can comprise:
The voltage signal of the first resistance after the second electric resistance partial pressure that step S100, reception feedback link line feed back to;
Optionally, the wire of power-supply unit connecting line can be USB wire, and the first resistance can be arranged on the ground wire of USB wire; One end of feedback link line is connected between the anodal data line and ground wire of USB wire, and the other end and MCU chip join; One end of the second resistance is connected between the two ends of feedback link line, and the other end joins with ground.
Step S200, determine the magnitude of voltage of described voltage signal;
Step S300, 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.
When power-supply unit connecting line and charging equipment join, the voltage signal that is arranged at the first resistance between ground wire can feed back to MCU chip by the connecting line being connected with anodal data line, the magnitude of voltage that MCU chip is detected is non-vanishing, when the magnitude of voltage that therefore can detect at MCU chip is non-vanishing, determine that power-supply unit connecting line and charging equipment join; When power-supply unit connecting line and charging equipment disconnect, the voltage signal that is arranged at the first resistance between ground wire disappears, the magnitude of voltage that MCU chip detects is zero, now can determine that power-supply unit connecting line and charging equipment disconnect, and charging equipment is in light condition.
Another process flow diagram of the unloaded detection method of charging equipment that Fig. 2 provides for the embodiment of the present invention, shown in Fig. 1 and Fig. 2, method shown in Fig. 2, on the basis of method shown in Fig. 1, also comprises:
Step S400, at definite described charging equipment during in light condition, to the cue circuit output cue of joining with described MCU chip.
Cue circuit, after receiving cue, will be carried out prompting operation, current in light condition so that user knows charging equipment.
Optionally, the unloaded detection method of charging equipment that the embodiment of the present invention provides can also comprise the steps: to receive the automatic power-on reset signal of the automatic electrify restoration circuit output of the MCU joining with described MCU chip, according to described automatic power-on reset signal, carries out automatic electrification reset operation.
The unloaded detection method of charging equipment that the embodiment of the present invention provides, by being arranged at the MCU chip of power-supply unit connecting line, receive the voltage signal of the first resistance after the second electric resistance partial pressure that feedback link line feeds back to, determine the magnitude of voltage of described voltage signal, when described magnitude of voltage is zero, can 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 at power-supply unit the zero load detection that line end has been realized charging equipment.
The unloaded pick-up unit of the charging equipment below embodiment of the present invention being provided is introduced, and the unloaded pick-up unit of charging equipment described below can mutual corresponding reference with the unloaded detection method of above-described charging equipment.
The structured flowchart of the unloaded pick-up unit of charging equipment that Fig. 3 provides for the embodiment of the present invention, the unloaded pick-up unit of this charging equipment is applied to be arranged on the MCU chip of power-supply unit connecting line, and with reference to Fig. 3, the unloaded pick-up unit of this charging equipment can comprise:
The first receiver module 100, for receiving the voltage signal of the first resistance after the second electric resistance partial pressure that feedback link line feeds back to;
Wherein, described the first resistance is arranged on the ground wire of general-purpose serial bus USB wire of described power-supply unit connecting line, described feedback link line one end is connected between the anodal data line and ground wire of described USB wire, the other end and described MCU chip join, one end of described the second resistance is connected between the two ends of described feedback link line, and the other end joins with ground;
Magnitude of voltage determination module 200, for determining the magnitude of voltage of described voltage signal;
Another structured flowchart of the unloaded pick-up unit of charging equipment that Fig. 4 provides for the embodiment of the present invention, shown in Fig. 3 and Fig. 4, the unloaded pick-up unit of this charging equipment can also comprise:
Prompting output module 400, at definite described charging equipment during in light condition, exports cue to the cue circuit joining with described MCU chip.
Optionally, the unloaded pick-up unit of charging equipment shown in Fig. 3 can also comprise: the second receiver module and automatically electrification reset module;
Wherein, the second receiver module, for receiving the automatic power-on reset signal of the automatic electrify restoration circuit output of the MCU joining with described MCU chip;
Automatically electrification reset module, operates for carry out automatic electrification reset according to described automatic power-on reset signal.
Optionally, the unloaded pick-up unit of charging equipment shown in Fig. 4 also can comprise the second receiver module and automatic electrification reset module.
The unloaded pick-up unit of charging equipment that the embodiment of the present invention provides, by being arranged at the MCU chip of power-supply unit connecting line, receive the voltage signal of the first resistance after the second electric resistance partial pressure that feedback link line feeds back to, determine the magnitude of voltage of described voltage signal, when described magnitude of voltage is zero, can 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 at power-supply unit the zero load detection that line end has been realized charging equipment.
The embodiment of the present invention also provides a kind of MCU chip, comprises the unloaded pick-up unit of charging equipment described above, and the description of the unloaded pick-up unit of charging equipment can, with reference to the description of corresponding part above, repeat no more herein.
The power-supply unit the connecting line below embodiment of the present invention being provided is introduced, power-supply unit connecting line described below relate to MCU chip part can with the corresponding reference of 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, this power-supply unit connecting line can comprise: connecting line input connector 1, connecting line output connecting head 2, USB wire 3, the first resistance R 1, the second resistance R 2, feedback link line, MCU chip 4;
Wherein, connecting line input connector 1 can be used for joining with power-supply unit, to realize the input of supply current; Optionally, connecting line input connector 1 can be attaching plug, for joining with socket, realizes the input of supply current; Connecting line input connector 1 can be also the electric current input adapter of adapter;
Connecting line output connecting head 2 can be used for joining with charging equipment, so that supply current is conveyed in charging equipment, realizes the charging to charging equipment;
Connecting line is inputted to connector 1 with USB wire 3 and connecting line output connecting head 2 couples together, and realizes supply current transmission to connecting line output connecting head 2 by connecting line input connector 1; USB wire 3 also can be realized data-transformation facility simultaneously;
The first resistance R 1 is arranged on the ground wire of USB wire 3;
One end of feedback link line is connected between the anodal data line and ground wire of USB wire 3, and the other end and MCU chip 4 join;
One end of the second resistance R 2 is connected between the two ends of described feedback link line, and the other end joins with ground;
The voltage signal of the first resistance R 1, by described feedback link line, after the second resistance R 2 dividing potential drops, transfers to MCU chip 4;
The power-supply unit connecting line that the embodiment of the present invention provides, the voltage signal of the first resistance after the second electric resistance partial pressure feeding back to by MCU chip reception feedback link line, when described magnitude of voltage is zero, determine that charging equipment is in light condition, realized at power-supply unit connection line end and carried out the whether unloaded detection of charging equipment.
Another structural representation of the power-supply unit connecting line that Fig. 6 provides for the embodiment of the present invention, shown in Fig. 5 and Fig. 6, on the basis of the connecting line of power-supply unit shown in Fig. 5, the connecting line of power-supply unit shown in Fig. 6 also comprises: cue circuit 5 and automatically electrify restoration circuit 6;
Wherein, cue circuit 5 joins with MCU chip 4, at described charging equipment, during in light condition, receives the cue of MCU chip 4 outputs, carries out prompting operation;
Automatically electrify restoration circuit 6 joins with MCU chip 4, can send automatic power-on reset signal to MCU chip 4, so that MCU chip 4 is carried out automatic electrification reset operation according to described automatic power-on reset signal.
The prompting mode of the embodiment of the present invention can be auditory tone cues, can be also light prompt.Cue circuit can be audible alarm circuit, and/or, optical alarm circuit.
The embodiment of the present invention has realized at power-supply unit connection line end carries out the whether unloaded detection of charging equipment.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the present invention.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. the unloaded detection method of charging equipment, is characterized in that, be applied to be arranged on the micro-control unit MCU chip of power-supply unit connecting line, described method comprises:
The voltage signal of the first resistance after the second electric resistance partial pressure that reception feedback link line feeds back to; Wherein, described the first resistance is arranged on the ground wire of general-purpose serial bus USB wire of described power-supply unit connecting line, described feedback link line one end is connected between the anodal data line and ground wire of described USB wire, the other end and described MCU chip join, one end of described the second resistance is connected between the two ends of described feedback link line, and the other end joins 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.
2. method according to claim 1, is characterized in that, also comprises:
At definite described charging equipment during in light condition, to the cue circuit output cue of joining with described MCU chip.
3. method according to claim 1, is characterized in that, also comprises:
Receive the automatic power-on reset signal of the automatic electrify restoration circuit output of the MCU joining with described MCU chip;
According to described automatic power-on reset signal, carry out automatic electrification reset operation.
4. the unloaded pick-up unit of charging equipment, is characterized in that, be applied to be arranged on the micro-control unit MCU chip of power-supply unit connecting line, described method comprises:
The first receiver module, for receiving the voltage signal of the first resistance after the second electric resistance partial pressure that feedback link line feeds back to; Wherein, described the first resistance is arranged on the ground wire of general-purpose serial bus USB wire of described power-supply unit connecting line, described feedback link line one end is connected between the anodal data line and ground wire of described USB wire, the other end and described MCU chip join, one end of described the second resistance is connected between the two ends of described feedback link line, and the other end joins with ground;
Magnitude of voltage determination module, for determining the magnitude of voltage of described voltage signal;
Unloaded determination module, when at described magnitude of voltage being zero, determines that the charging equipment being connected with described power-supply unit connecting line is in light condition.
5. device according to claim 4, is characterized in that, also comprises:
Prompting output module, at definite described charging equipment during in light condition, exports cue to the cue circuit joining with described MCU chip.
6. device according to claim 4, is characterized in that, also comprises:
The second receiver module, for receiving the automatic power-on reset signal of the automatic electrify restoration circuit output of the MCU joining with described MCU chip;
Automatically electrification reset module, operates for carry out automatic electrification reset according to described automatic power-on reset signal.
7. a micro-control unit MCU chip, is characterized in that, comprising: the unloaded pick-up unit of charging equipment described in claim 4-6 any one.
8. a power-supply unit connecting line, is characterized in that, comprising: connecting line input connector; Connecting line output connecting head; The general-purpose serial bus USB wire that connects described connecting line input connector and described connecting line output connecting head; The first resistance; The 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 the anodal data line and ground wire of described USB wire, and the other end and described MCU chip join;
One end of described the second resistance is connected between the two ends of described feedback link line, and the other end joins with ground;
Described MCU chip and described feedback link line join, and described MCU chip is MCU chip claimed in claim 7.
9. power-supply unit connecting line according to claim 8, is characterized in that, also comprises:
Join with described MCU chip, at described charging equipment, during in light condition, receive the cue of described MCU chip output, carry out the cue circuit of prompting operation.
10. power-supply unit connecting line according to claim 8, is characterized in that, described MCU chip is STM8S103T6 chip.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| CN103558483A true CN103558483A (en) | 2014-02-05 |
| CN103558483B CN103558483B (en) | 2016-08-31 |
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| CN103558483B (en) | 2016-08-31 |
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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. |