WO2017202315A1 - 一种电源适配器的控制方法及控制装置 - Google Patents

一种电源适配器的控制方法及控制装置 Download PDF

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Publication number
WO2017202315A1
WO2017202315A1 PCT/CN2017/085584 CN2017085584W WO2017202315A1 WO 2017202315 A1 WO2017202315 A1 WO 2017202315A1 CN 2017085584 W CN2017085584 W CN 2017085584W WO 2017202315 A1 WO2017202315 A1 WO 2017202315A1
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WO
WIPO (PCT)
Prior art keywords
power adapter
common mode
mode noise
control
scanning frequency
Prior art date
Application number
PCT/CN2017/085584
Other languages
English (en)
French (fr)
Inventor
邹杰
张连明
王文锋
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP17802161.4A priority Critical patent/EP3454450B1/en
Priority to US16/304,459 priority patent/US11126301B2/en
Publication of WO2017202315A1 publication Critical patent/WO2017202315A1/zh

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Classifications

    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/04—Regulation of charging current or voltage
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • 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
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20—Charging or discharging characterised by the power electronics converter

Definitions

  • the present invention relates to the field of computer technologies, and in particular, to a control method and a control device for a power adapter. .
  • terminal devices such as mobile phones, etc.
  • touch screens English: Touch Panel, TP for short.
  • the board provides a human-computer interface.
  • a terminal device with a touch screen usually consumes a large amount of power, so it needs to be charged frequently, but the power adapter is generally a switch charger.
  • the switching frequency of the switch charger is greater than 20Khz, which itself The electromagnetic interference is large.
  • the common mode noise generated by the power adapter will have a large amplitude in multiple frequency bands, as shown in Figure 1, the spectrum of the working signal of the TP, when the TP
  • the scanning frequency corresponds to the peak position of the common mode noise generated by the power adapter
  • the common mode noise generated by the power adapter will cause a large interference to the TP, which may cause the TP to be unresponsive, report an error, or not.
  • the abnormal condition of the response Moreover, with the increasing use of high current fast charging power adapters, the amplitude of the common mode noise generated by the power adapter will increase due to the increase of current, which will further increase the interference to the TP.
  • the TP integrated control chip (English: Integrated Chip, referred to as: IC) can detect the common mode noise generated by the power adapter and determine whether the noise amplitude is When the preset threshold is exceeded, and then the noise amplitude exceeds the preset threshold, the control IC of the TP can adjust the scan frequency of the TP to the preset frequency, so that the adjusted operating frequency corresponds to the valley position of the common mode noise generated by the power adapter. (As shown in Figure 2), thereby reducing the interference of the common mode noise generated by the power adapter to the TP.
  • IC Integrated Chip
  • the TP control IC can not find a clean working frequency point no matter how to adjust the scanning frequency of the TP. This can cause the common mode noise generated by the power adapter to not interfere with the TP.
  • control IC of the TP adjusts the scanning frequency of the TP from the default working frequency to the new working frequency
  • the control IC of the TP also performs operations such as refreshing the working reference and discarding the reporting information, at this time, if the user When the sliding operation is performed on the TP, the TP does not respond (for example, the user performs a continuous sliding operation on the TP, but a breakpoint occurs), which affects the user experience.
  • the embodiment of the invention provides a control method and a control device for a power adapter, which solves the common mode noise generated by the power adapter when the common mode noise generated by the power adapter does not interfere with the TP by adjusting the scanning frequency of the TP.
  • the problem of interference of the common mode noise generated by the power adapter to the TP cannot be reduced because the clean working frequency point cannot be found, and the user is prevented from continuously sliding on the TP.
  • the phenomenon that the TP does not respond during operation occurs.
  • the embodiment of the present invention adopts the following technical solutions:
  • a first aspect of the embodiments of the present invention provides a method for controlling a power adapter, including:
  • the control device acquires the scanning frequency of the TP, and obtains the intensity of the common mode noise generated by the power adapter at the scanning frequency of the TP, and then determines whether the intensity of the acquired common mode noise is greater than or equal to a preset threshold, when determining the common mode When the intensity of the noise is greater than or equal to the preset threshold, it indicates that the common mode noise generated by the power adapter interferes with the TP. At this time, the control device can adjust the operating frequency of the control IC of the power adapter according to the acquired scanning frequency of the TP. The intensity of the newly generated common mode noise of the power adapter at the scanning frequency of the TP is less than a preset threshold.
  • the scanning frequency of the TP refers to the frequency at which the control IC of the TP transmits the driving signal when the TP is in the working state.
  • the threshold value used for determining whether the common mode noise generated by the power adapter interferes with the TP may be set according to the requirements of the actual application scenario, and is not specifically limited in this embodiment of the present invention.
  • the control device determines whether the obtained intensity of the common mode noise generated by the power adapter is greater than or equal to a preset threshold value at the scanning frequency of the TP, and determines that the intensity of the common mode noise is greater than Or equal to the preset threshold, according to the scanning frequency of the acquired TP, adjust the operating frequency of the power adapter's control IC, so that the intensity of the newly generated common mode noise of the power adapter is less than the preset threshold at the scanning frequency of the TP, thus, By adjusting the operating frequency of the control IC of the power adapter, the common mode noise generated by the power adapter does not interfere with the TP at the scanning frequency of the TP, and the common mode noise generated by the power adapter is solved by adjusting the scanning frequency of the TP.
  • the operating frequency of the control IC of the power adapter can be adjusted by the following steps, so that the intensity of the newly generated common mode noise of the power adapter is less than a preset threshold at the scanning frequency of the TP: the control device according to the scanning frequency of the TP a control IC of the power adapter transmits control information; the control information is used to instruct the control IC of the power adapter to adjust its operating frequency, so that the common mode noise generated by the power adapter is at the scanning frequency of the TP The intensity is less than the preset threshold.
  • the control IC of the power adapter can adjust its working frequency according to the control information. So that the common mode noise generated by the power adapter at the scanning frequency of the TP does not interfere with the TP.
  • control IC of the power adapter can adjust its operating frequency by adjusting the resistance of the resistor included in the oscillation circuit in its own control circuit and/or the capacitance of the capacitor.
  • the control device may perform the operation of acquiring the scanning frequency of the TP and the intensity of the common mode noise generated by the power adapter at the scanning frequency of the TP after determining that the TP is in the working state, so that When the TP is in the working state, when the common mode noise generated by the power adapter interferes with the TP, the operating frequency of the power adapter's control IC is adjusted.
  • the scanning frequency of the TP Since the scanning frequency of the TP is known at the control IC of the TP, the scanning frequency of the TP can be obtained by the following steps: The control device reads the scanning frequency of the TP from the control IC of the TP.
  • the intensity of the common mode noise generated by the power adapter at the scanning frequency of the TP can be obtained by the following steps: the intensity of the common mode noise generated by the power adapter at the scanning frequency of the TP is read by the control IC of the TP; or, detected at the TP The intensity of the common mode noise generated by the power adapter at the scan frequency.
  • a second aspect of the embodiments of the present invention provides a control apparatus, including:
  • An obtaining unit configured to acquire a scanning frequency of the touch screen TP, and an intensity of a common mode noise generated by the power adapter at a scanning frequency of the TP;
  • a determining unit configured to determine whether the strength of the common mode noise acquired by the acquiring unit is greater than or equal to a preset threshold
  • control unit configured to: when the determining unit obtains the intensity of the common mode noise is greater than or equal to a preset threshold, adjust an operating frequency of the control IC of the power adapter according to a scanning frequency of the TP, so that The intensity of the newly generated common mode noise of the power adapter at the scanning frequency of the TP is less than the preset threshold.
  • a third aspect of the embodiments of the present invention provides a control apparatus, including: at least one processor, a memory, and a communication interface;
  • the memory is configured to store an instruction
  • the processor is configured to perform the control method of the power adapter provided by the first aspect or the possible implementation manner of the first aspect, to implement the acquiring unit, the determining unit, and the control in the possible implementation manner of the second aspect or the second aspect The function of the unit.
  • the communication interface is configured to perform the control method of the power adapter provided by the possible implementation manner of the first aspect to implement the function of the receiving unit in the possible implementation manner of the second aspect.
  • 1 is a frequency spectrum diagram of common mode noise generated by a power adapter in the prior art provided by the present invention, and a frequency spectrum diagram of an operation signal of the TP;
  • FIG. 2 is a frequency spectrum diagram of common mode noise generated by a power adapter in the prior art provided by the present invention, and a frequency spectrum diagram of an operation signal of the TP before and after adjustment of a scan frequency of the TP;
  • FIG. 3 is a schematic structural diagram of a system according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a control device according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of a method for controlling a power adapter according to an embodiment of the present invention
  • FIG. 6 is a flowchart of another method for controlling a power adapter according to an embodiment of the present invention.
  • FIG. 7 is a frequency spectrum diagram of a working signal of a TP according to an embodiment of the present invention, and a frequency spectrum diagram of common mode noise generated by the power adapter before and after adjustment of an operating frequency of a control IC of the power adapter;
  • FIG. 8 is an oscillating circuit according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of waveforms of common mode noise according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram showing the composition of another control device according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of still another control device according to an embodiment of the present invention.
  • the basic principle of the embodiment of the present invention is: the control device acquires the scanning frequency of the TP, and acquires the intensity of the common mode noise generated by the power adapter at the scanning frequency of the TP, and then determines whether the intensity of the acquired common mode noise is greater than or equal to The preset threshold, when determining that the intensity of the common mode noise is greater than or equal to the preset threshold, adjusting the operating frequency of the control IC of the power adapter according to the acquired scanning frequency of the TP, so that the power adapter is new at the scanning frequency of the TP.
  • the intensity of the generated common mode noise is less than the preset threshold, so that the method of adjusting the scanning frequency of the TP can be used to make the common mode noise generated by the power adapter when the common mode noise generated by the power adapter does not interfere with the TP.
  • FIG. 3 shows a simplified schematic diagram of a system architecture to which embodiments of the present invention may be applied.
  • the system architecture may include a control device 01, a power adapter 02, a terminal device 03 having a TP, and a Universal Serial Bus (USB) cable 04.
  • USB Universal Serial Bus
  • the power adapter 02 can charge the terminal device 03 through the USB cable 04.
  • the terminal device 03 can be an electronic device having a TP such as a mobile phone or a tablet computer.
  • the power adapter 02 can be made up of a casing, a transformer, a metal oxide semiconductor (Metal Oxide Semiconductor, MOS for short) switch, an inductor, a capacitor, a control IC, a printed circuit board (PCB), etc. Component composition.
  • MOS Metal Oxide Semiconductor
  • control device 01 may be included in the power adapter 02 or may be included in the terminal device 03.
  • the embodiment of the present invention does not specifically limit the installation position of the control device 01.
  • the control device 01 is separately provided in the power adapter 02.
  • control device 01 shown in FIG. 3 may include at least one processor 101, a memory 102, and a communication interface 103.
  • control device 01 The various components of the control device 01 will be specifically described below with reference to FIG. 4:
  • the processor 101 can be a processor or a collective name for a plurality of processing elements.
  • the processor 101 is a central processing unit (English: central processing unit, referred to as: CPU), or may be a specific integrated power (Application Specific Integrated Circuit, ASIC for short), or one or more integrated circuits configured to implement the embodiments of the present invention, for example: one or more microprocessors (English: digital signal processor, referred to as: DSP), or one or more field programmable gate arrays (English: Field Programmable Gate Array, referred to as: FPGA).
  • CPU central processing unit
  • ASIC Application Specific Integrated Circuit
  • the processor 101 can perform various functions of the control device 01 by running or executing a software program stored in the memory 102 and calling data stored in the memory 102.
  • processor 101 may include one or more CPUs, such as CPU0 and CPU1 shown in FIG.
  • control device 01 may include a plurality of processors, such as the processor 101 and the processor 104 shown in FIG. 4, each of which may be a single core (single-
  • the CPU) processor can also be a multi-core (multi-CPU) processor.
  • a processor herein may refer to one or more devices, circuits, and/or processing cores for processing data, such as computer program instructions.
  • the memory 102 can be a read-only memory (English: read-only memory, English: ROM) or other types of static storage devices that can store static information and instructions, random access memory (English: random access memory, English: RAM) or Other types of dynamic storage devices that can store information and instructions, or electrically erasable programmable read-only memory (English: EEPROM), read-only optical discs (English: Compact Disc Read- Only Memory, English: CD-ROM) or other disc storage, CD storage (including compact discs, laser discs, CDs, digital versatile discs, Blu-ray discs, etc.), disk storage media or other magnetic storage devices, or can be used to carry or Any other medium that has the desired program code in the form of an instruction or data structure and that can be accessed by a computer is stored, but is not limited thereto.
  • the memory can exist independently and be connected to the processor via a bus.
  • the memory can also be integrated with the processor.
  • the memory 102 is used to store a software program for executing the solution of the embodiment of the present invention, and is controlled by the processor 101 for execution.
  • the communication interface 103 uses a device such as any transceiver for communicating with other devices.
  • the communication interface 103 can include a receiving unit to implement a receiving function, and a transmitting unit to implement a transmitting function.
  • the processor 101 may be a control IC of the power adapter 02, or may be separately provided.
  • the processor 101 may be a processor of the terminal device 03, or may be separately provided.
  • the memory 102 of the control device 01 may be a memory of the power adapter 02 or a memory of the terminal device 03, or may be separately provided depending on the set position.
  • the communication interface 103 can be a USB interface, or a short-range communication interface such as Bluetooth or Wi-Fi.
  • the device structure illustrated in FIG. 4 does not constitute a limitation to the control device, and may include more or less components than those illustrated, or some components may be combined, or different component arrangements.
  • the processor 101 is configured to acquire a scan frequency of the TP, and a strength of a common mode noise generated by the power adapter at a scan frequency of the TP, and determine whether the intensity of the common mode noise is greater than or equal to a preset threshold, when the common mode noise is When the intensity is greater than or equal to the preset threshold, the operating frequency of the control IC of the power adapter is adjusted according to the scanning frequency of the TP, so that the intensity of the newly generated common mode noise of the power adapter is less than the preset threshold at the scanning frequency of the TP.
  • FIG. 5 is a flowchart of a method for controlling a power adapter according to an embodiment of the present invention, as shown in FIG.
  • the law can include:
  • the control device acquires a scanning frequency of the TP and a strength of a common mode noise generated by the power adapter at a scanning frequency of the TP.
  • the intensity of the common mode noise generated by the power adapter at the scanning frequency of the TP is the intensity of the common mode noise of the scanning frequency of the TP.
  • the control device determines whether the strength of the common mode noise is greater than or equal to a preset threshold.
  • the control device can acquire the scanning frequency of the TP and the intensity of the common mode noise generated by the power adapter at the scanning frequency of the TP, and obtain the two parameters. After these two parameters, it is judged whether the obtained common mode noise intensity is greater than or equal to a preset threshold to determine whether the common mode noise generated by the power adapter interferes with the TP.
  • the control device adjusts the operating frequency of the control IC of the power adapter according to the scanning frequency of the TP, so that the common mode noise generated by the power adapter is generated at the scanning frequency of the TP.
  • the intensity is less than the preset threshold.
  • control device determines that the acquired intensity of the common mode noise generated by the power adapter is greater than or equal to a preset threshold value at the scanning frequency of the TP, it indicates that the common mode noise generated by the power adapter interferes with the TP.
  • the control device can adjust the operating frequency of the power supply adapter control IC according to the acquired scanning frequency of the TP to reduce the intensity of the common mode noise generated by the power adapter at the scanning frequency of the TP, so that the power adapter is new at the scanning frequency of the TP.
  • the intensity of the generated common mode noise is less than a preset threshold, so that the TP is not interfered by the common mode noise generated by the power adapter.
  • the control device determines whether the obtained intensity of the common mode noise generated by the power adapter is greater than or equal to a preset threshold value at the scanning frequency of the TP, and determines that the intensity of the common mode noise is greater than Or equal to the preset threshold, according to the scanning frequency of the acquired TP, adjust the operating frequency of the power adapter's control IC, so that the intensity of the newly generated common mode noise of the power adapter is less than the preset threshold at the scanning frequency of the TP, thus, By adjusting the operating frequency of the control IC of the power adapter, the common mode noise generated by the power adapter does not interfere with the TP at the scanning frequency of the TP, and the common mode noise generated by the power adapter is solved by adjusting the scanning frequency of the TP.
  • FIG. 6 is a flowchart of another method for controlling a power adapter according to an embodiment of the present invention. As shown in FIG. 6, the method may include:
  • the control device determines whether the TP is in an active state.
  • the control device can monitor the working state of the TP, and then detect whether the common mode noise generated by the power adapter interferes with the TP when the monitoring TP is in the working state.
  • the control device may determine whether the TP is in an active state by determining whether the status information sent by the control IC of the TP for indicating that the TP is in the working state is determined.
  • a touch operation can be detected while the TP is in operation.
  • the TP can detect the operation when the touch screen is lit, and it is in the working state; in some devices, the TP can also detect the operation when the touch screen is not lit, and it is in the working state, and some screen-out operations can be realized.
  • step 302 may be performed; when the control device determines that the TP is not in the working state, step 301 may be re-executed to continue monitoring the working state of the TP.
  • the power adapter can be charged in an optimal charging mode, such as charging with a large current.
  • the control device acquires a scanning frequency of the TP and a strength of a common mode noise generated by the power adapter at a scanning frequency of the TP.
  • the control device when the control device determines that the TP is in the working state, the control device can acquire the scanning frequency of the TP and the intensity of the common mode noise generated by the power adapter at the scanning frequency of the TP, so as to be used for subsequent detection of the total generated by the power adapter. Whether the mode noise interferes with the TP.
  • Obtaining the scanning frequency of the TP and the intensity of the common mode noise generated by the power adapter at the scanning frequency of the TP may be acquired in a preset period; or may be acquired in a preset time length, such as estimating the charging duration of different charging states, in different Acquired at the beginning of the state of charge, as acquired at the beginning of constant current charging, and acquired at the beginning of trickle charging.
  • the control device may acquire the scanning frequency of the TP by specifically: the control device reads the scanning frequency of the TP by the control IC of the TP. Since the control IC of the TP in the prior art knows the scanning frequency of the TP, the control device can directly read the scanning frequency of the TP from the control IC of the TP. Wherein, in a specific implementation, when the control device is disposed in the power adapter, the control device can communicate with the control IC of the TP through the D+, D- of the USB cable, that is, the control device can pass the D+, D of the USB cable. - Read the scanning frequency of the TP.
  • the control device acquires the strength of the common mode noise generated by the power adapter at the scanning frequency of the TP.
  • the control device may be read by the control IC of the TP at the TP.
  • the control IC of the TP also knows the intensity of the common mode noise generated by the power adapter at the scanning frequency of the TP, so the control device can also directly read the scanning frequency of the TP from the control IC of the TP.
  • the strength of the common mode noise generated by the lower power adapter is the strength of the common mode noise generated by the lower power adapter.
  • the control device when the control device is disposed in the power adapter, the control device can also read the intensity of the common mode noise generated by the power adapter at the scanning frequency of the TP through D+, D- of the USB cable.
  • the control device acquires the strength of the common mode noise generated by the power adapter at the scan frequency of the TP. Specifically, the control device detects that the power adapter is generated at the scan frequency of the TP. The strength of the common mode noise.
  • the control device may detect the ground wire, the power line, the shielding layer, and the like of the USB cable, or may detect the structure of the terminal device to obtain a common mode generated by the power adapter at the scanning frequency of the TP. The strength of the noise.
  • the control device determines whether the strength of the common mode noise is greater than or equal to a preset threshold.
  • the power can be determined by determining whether the intensity of the common mode noise is greater than or equal to a preset threshold. Whether the common mode noise generated by the adapter interferes with the TP. When the intensity of the common mode noise is greater than or equal to the preset threshold, it indicates that the common mode noise generated by the power adapter interferes with the TP. In this case, step 304 may be performed; when the intensity of the common mode noise is less than the preset threshold, the power is indicated. The common mode noise generated by the adapter does not interfere with the TP.
  • step 301 can be re-executed to control the control IC of the power adapter in time to adjust its own operation when the common mode noise generated by the power adapter interferes with the TP.
  • the frequency to achieve common mode noise generated by the power adapter does not interfere with the TP.
  • the control device adjusts an operating frequency of the control IC of the power adapter according to the scanning frequency of the TP.
  • control device may send a control to the control IC of the power adapter according to the scanning frequency of the TP.
  • the information is used to indicate that the control IC of the power adapter adjusts its operating frequency such that the intensity of the newly generated common mode noise of the power adapter is less than a preset threshold at the scanning frequency of the TP.
  • the control device can send the scanning frequency of the TP to the control IC of the power adapter, so that the control IC of the power adapter can adjust its working frequency according to the scanning frequency of the TP, so that the scanning frequency of the TP is generated by the control IC of the adapter.
  • the intensity of the common mode noise newly generated by the power adapter at the scanning frequency of the TP is less than a preset threshold.
  • the control IC of the power adapter can calculate the operating frequency that needs to be adjusted according to the scanning frequency of the TP, thereby calculating the corresponding circuit parameter value, and then adjusting its own circuit parameters to achieve the operating frequency adjustment.
  • control IC of the circuit adapter adjusts the operating frequency of the control IC of the power adapter by adjusting the resistance value
  • the resistance value to be adjusted is calculated; if the control IC of the circuit adapter adjusts the operating frequency of the control IC of the power adapter by adjusting the capacitance value, Calculate the value of the capacitor that needs to be adjusted, and so on.
  • the control device can also calculate the operating frequency of the control IC of the power adapter, and send it to the power adapter to instruct the control IC of the power adapter to adjust the operating frequency according to the calculation result, and the control IC of the power adapter calculates the corresponding circuit parameter according to the received operating frequency. The value is adjusted for the operating frequency.
  • the control device may calculate a circuit parameter value for adjusting the operating frequency of the control IC of the power adapter, and send the circuit parameter value to the control IC of the power adapter, and the control IC of the power adapter adjusts the corresponding circuit according to the received circuit parameter value. Parameters to achieve adjustment of their working frequency.
  • control IC of the circuit adapter adjusts the operating frequency of the control IC of the power adapter by adjusting the resistance value
  • the control device calculates the resistance value to be adjusted and sends it to the control IC of the power adapter; if the control IC of the circuit adapter adjusts by adjusting the capacitance value The operating frequency of the control IC of the power adapter, the control device calculates the capacitance value that needs to be adjusted, sends it to the control IC of the power adapter, and so on.
  • the above control information may carry the scanning frequency of the TP, the operating frequency to be adjusted by the control IC of the power adapter, or the circuit parameter value to be adjusted by the control IC of the power adapter, and those skilled in the art may adjust the power according to the design of the power adapter.
  • the various embodiments of the operating frequency of the control IC of the adapter are not limited herein.
  • steps 301-304 may be performed cyclically during charging; or when the charging is started, steps 302-304 may be performed, and after the operating frequency of the control IC of the power adapter is adjusted in step 304, the method flow is completed. Perform 302-304. again when charging is next time.
  • the control IC of the power adapter can adjust the resistance of the oscillation circuit of the control IC to adjust the operating frequency of the IC.
  • an oscillating circuit as shown in FIG. 8 is used in which a constant current source is used to charge and discharge an RC oscillating circuit, and a comparator receives a sawtooth wave at one end and a reference voltage (hysteresis) at the other end.
  • the output frequency of the circuit has a certain correspondence with the operating frequency of the control IC of the power adapter, so the operating frequency of the control IC of the power adapter also changes, so that the resistance of the resistor R can be adjusted to achieve Adjust the operating frequency of the power adapter's control IC for the purpose.
  • the correspondence between the output frequency of the oscillating circuit and the operating frequency of the control IC of the power adapter is related to the design of the specific power adapter.
  • the purpose of adjusting the operating frequency of the control IC of the power adapter can be achieved, and the resistance value R of the resistor in the oscillating circuit and the capacitance value of the capacitor C can be changed at the same time.
  • the purpose of adjusting the operating frequency of the control IC of the power adapter is achieved, and the principle of changing the resistance of the resistor R is adjusted.
  • the principle of the operating frequency of the control IC of the source adapter is similar, and the embodiments of the present invention are not described herein again.
  • the oscillating circuit shown in FIG. 8 is an RC oscillating circuit, and other types of oscillating circuits, such as an LC oscillating circuit, etc., may be used in practical applications.
  • the output frequency of the oscillating circuit can be adjusted by adjusting the inductance L and/or the capacitance C.
  • the above adjustments of the values of R, C, and L can be achieved by selecting a circuit.
  • a selection circuit having a plurality of branches can be provided, and the resistance value of each branch is different, and the resistance of the circuit R is adjusted by gating different branches.
  • the control device can calculate the resistance value, or the capacitance value or the inductance value that the oscillation circuit needs to adjust, and send it to the control IC of the power adapter, so that the control IC of the power adapter can calculate the resistance value, the capacitance value, or The inductance value adjusts its own operating frequency.
  • the control device can directly adjust the oscillation circuit to adjust the operating frequency of the control IC.
  • the intensity of the newly generated common mode noise of the power adapter changes at the scanning frequency of the TP, so it can be judged after the operating frequency of the control IC of the power adapter changes.
  • the intensity of the newly generated common mode noise of the power adapter is less than the preset threshold at the scanning frequency of the TP, it indicates that the operating frequency of the control IC of the appropriate power adapter is found, so that the common mode noise generated by the power adapter is not It will cause interference to the TP.
  • the common mode noise generated by the power adapter when the scanning frequency of the TP is at the frequency position of the common mode noise corresponding to the peak of the common mode noise generated by the power adapter, the common mode noise generated by the power adapter will interfere with the TP.
  • the scanning frequency of the TP is at the frequency position of the common mode noise corresponding to the valley of the common mode noise generated by the power adapter, the common mode noise generated by the power adapter does not interfere with the TP, and therefore, the power adapter can be adjusted.
  • the operating frequency of the IC makes the scanning frequency of the TP in the trough position of the common mode noise generated by the power adapter, so as to achieve no interference with the TP.
  • the spectrogram of the common mode noise generated by the power adapter can be as shown in FIG. 9 (the ideal spectrum diagram).
  • f represents the operating frequency of the control IC of the power adapter
  • ⁇ f is Indicates frequency jitter
  • ⁇ f is a known amount.
  • the valley position of the common mode noise generated by the power adapter belongs to: n(f+ ⁇ f) ⁇ (n+1)(f- ⁇ f), it can be seen that when f occurs When changing, the valley position of the common mode noise generated by the power adapter will also change.
  • the frequency corresponding to the changed trough position is determined to include the scanning frequency of the TP, it indicates that a suitable one has been found.
  • the operating frequency f of the power adapter's control IC allows the common mode noise generated by the power adapter to not interfere with the TP.
  • f denotes the operating frequency of the control IC of the power adapter
  • ⁇ f denotes the peak width of the fundamental frequency
  • ⁇ f is a known amount
  • the valley position of the common mode noise generated by the power adapter belongs to: nf ⁇ (n+1)(f- ⁇ f)
  • the operating frequency f of the control IC can be selected from the values of the five fs, and the power source is selected.
  • the adapter can support f.
  • the operating frequency f of the control IC can be selected from the values of the five f, and the power adapter is selected.
  • the control IC can support f.
  • the scanning frequency of the TP is only the intermediate frequency of the trough, and the scanning frequency of the optional TP can be close to the left or right side of the trough.
  • the manner of calculating f is the example of the embodiment of the present invention, and n may be determined according to the adjustable range of the operating frequency f of the control IC of the power adapter, thereby determining the value of f.
  • the operating frequency of the control IC of the power adapter can be adjusted by adjusting the resistance R of the oscillating circuit, the capacitance C, and the inductance L to adjust the output frequency of the oscillating circuit.
  • the control device determines whether the obtained intensity of the common mode noise generated by the power adapter is greater than or equal to a preset threshold value at the scanning frequency of the TP, and determines that the intensity of the common mode noise is greater than Or equal to the preset threshold, according to the scanning frequency of the acquired TP, adjust the operating frequency of the power adapter's control IC, so that the intensity of the newly generated common mode noise of the power adapter is less than the preset threshold at the scanning frequency of the TP, thus, By adjusting the operating frequency of the control IC of the power adapter, the common mode noise generated by the power adapter does not interfere with the TP at the scanning frequency of the TP, and the common mode noise generated by the power adapter is solved by adjusting the scanning frequency of the TP.
  • the operating frequency of the control IC of the power adapter is adjusted, thereby reducing the influence on the output efficiency of the power adapter.
  • FIG. 10 is a schematic diagram showing the composition of another control device according to an embodiment of the present invention.
  • the control device may include: an obtaining unit 41, a determining unit 42, and a control unit 43.
  • the obtaining unit 41 is configured to acquire a scanning frequency of the touch screen TP and an intensity of common mode noise generated by the power adapter at the scanning frequency of the TP.
  • the determining unit 42 is configured to determine whether the strength of the common mode noise acquired by the acquiring unit 41 is greater than or equal to a preset threshold.
  • the control unit 43 is configured to: when the determining unit 42 obtains the intensity of the common mode noise is greater than or equal to a preset threshold, adjust an operating frequency of the control IC of the power adapter according to a scanning frequency of the TP, so that The intensity of the newly generated common mode noise of the power adapter is less than the preset threshold at the scanning frequency of the TP.
  • control unit 43 is specifically configured to send control information to the control IC of the power adapter according to the scanning frequency of the TP; the control information is used to indicate the power adapter.
  • the control IC adjusts its operating frequency such that the intensity of the newly generated common mode noise of the power adapter is less than the predetermined threshold at the scanning frequency of the TP.
  • control device may further include: a determining unit 44.
  • the determining unit 44 is configured to obtain, at the acquiring unit 41, a scanning frequency of the touch screen TP, and determine that the TP is in an working state before the intensity of the common mode noise generated by the power adapter at the scanning frequency of the TP.
  • the acquiring unit 41 is specifically configured to read the scanning frequency of the TP by the control IC of the TP.
  • the acquiring unit 41 is specifically configured to read, by the control IC of the TP, the strength of the common mode noise generated by the power adapter at the scanning frequency of the TP; or And detecting an intensity of common mode noise generated by the power adapter at a scanning frequency of the TP.
  • the processor 101 and the processor 104 included in the control apparatus shown in FIG. 4 can implement the control method of the power adapter provided in FIG. 5 or FIG. 6 of the embodiment of the present invention to implement the present invention.
  • EMBODIMENT OF THE INVENTION The functions of the acquisition unit 41, the determination unit 42, the control unit 43, and the determination unit 44 in the control device shown in Fig. 10 or Fig. 11 .
  • the processor 101 and the processor 104 perform the function of the acquisition unit 41 in the control device shown in FIG. 10 or FIG. 11 by executing step 201 shown in FIG.
  • the processor 101 and the processor 104 perform the function of the determining unit 42 in the control device shown in FIG. 10 or FIG. 11 by executing step 303 shown in FIG. 6.
  • the control device provided by the embodiment of the invention is used for executing the control method of the power adapter described above, so that the same effect as the control method of the power adapter described above can be achieved.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division.
  • there may be another division manner for example, multiple units or components may be used.
  • the combination may be integrated into another device, or some features may be ignored or not performed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may be one physical unit or multiple physical units, that is, may be located in one place, or may be distributed to multiple different places. . Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a readable storage medium. Based on such understanding, the technical solution of the embodiments of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a device (which may be a microcontroller, chip, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read only memory (English: Read-Only Memory, abbreviated as: ROM), a random access memory (English: Random Access Memory, abbreviated as: RAM), a magnetic disk or an optical disk, and the like.
  • ROM Read-Only Memory
  • RAM Random Access Memory

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Abstract

本发明实施例公开了一种电源适配器的控制方法及控制装置，涉及计算机技术领域，解决了当共模噪声在TP的整个工作频段内都较大时，由于无法寻找到干净的工作频率点使得无法降低共模噪声对TP的干扰的问题，且避免了用户在TP上进行连续滑动操作时TP不响应的现象出现。具体方案为：获取TP的扫描频率，以及在TP的扫描频率下电源适配器产生的共模噪声的强度；判断共模噪声的强度是否大于或等于预设阈值；当共模噪声的强度大于或等于预设阈值时，调整电源适配器的控制IC的工作频率，以使得在TP的扫描频率下电源适配器新产生的共模噪声的强度小于预设阈值。本发明实施例用于降低共模噪声对TP的干扰过程中。

Description

一种电源适配器的控制方法及控制装置
本申请要求于2016年5月26日提交中国专利局、申请号为201610363271.2、发明名称为“一种电源适配器的控制方法及控制装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及计算机技术领域，尤其涉及一种电源适配器的控制方法及控制装置。。
背景技术
随着通信技术的不断发展，终端设备(如，手机等)在人们的日常生活中越来越普及，且随着科技的进步，终端设备大都采用触摸屏(英文：Touch Panel，简称：TP)的触摸板提供人机交互界面。众所周知的，具有触摸屏的终端设备通常情况下耗电量会较大，因此需经常进行充电，但电源适配器一般为开关充电器，在充电的过程中，开关充电器的开关频率大于20Khz，其本身的电磁干扰较大。如图1中的电源适配器产生的共模噪声的频谱所示，电源适配器产生的共模噪声在多个频段会振幅较大，如图1所示的TP的工作信号的频谱图，当TP的扫描频率(如图1所示)对应电源适配器产生的共模噪声的波峰位置时，电源适配器产生的共模噪声会对TP产生比较大的干扰，从而使得TP出现反应迟钝、报点错误或者不响应的异常状况。并且，随着大电流快速充电电源适配器的应用日趋广泛，电源适配器产生的共模噪声的幅度会由于电流的增大而增大，这将会导致对TP的干扰进一步增加。
在现有技术中，为了降低电源适配器产生的共模噪声对TP的干扰，TP的控制集成芯片(英文：Integrated Chip，简称：IC)可以检测电源适配器产生的共模噪声，并判断噪声幅度是否超过预设阈值，然后当确定噪声幅度超过预设阈值时，TP的控制IC可以调整TP的扫描频率到预设频点，使得调整后的工作频率对应于电源适配器产生的共模噪声的波谷位置(如图2所示)，从而降低电源适配器产生的共模噪声对TP的干扰。
现有技术中至少存在如下问题：
1、当电源适配器产生的共模噪声在TP的整个工作频段内都较大(如宽带高噪声)时，TP的控制IC无论怎样调整TP的扫描频率，均找不到干净的工作频率点，这会导致电源适配器产生的共模噪声对TP的干扰无法降低。
2、在TP的控制IC将TP的扫描频率从默认的工作频率调整到新的工作频率的过程中，TP的控制IC还会进行刷新工作基准和丢弃报点信息等操作，此时，若用户在TP上进行连续滑动操作，则会出现TP不响应的现象(如，用户在TP上进行了连续滑动操作，但出现了断点现象)，影响用户体验。
发明内容
本发明实施例提供一种电源适配器的控制方法及控制装置，解决了采用调整TP的扫描频率的方法使得电源适配器产生的共模噪声不会对TP产生干扰时，在电源适配器产生的共模噪声在TP的整个工作频段内都较大的情况下，由于无法寻找到干净的工作频率点使得无法降低电源适配器产生的共模噪声对TP的干扰的问题，且避免了用户在TP上进行连续滑动 操作时TP不响应的现象出现。
为达到上述目的，本发明实施例采用如下技术方案：
本发明实施例的第一方面，提供一种电源适配器的控制方法，包括：
控制装置获取TP的扫描频率，并获取在该TP的扫描频率下电源适配器产生的共模噪声的强度，然后判断获取到的共模噪声的强度是否大于或等于预设阈值，当确定出共模噪声的强度大于或等于预设阈值时，表明电源适配器产生的共模噪声会对TP产生干扰，此时控制装置可以根据获取到的TP的扫描频率，调整电源适配器的控制IC的工作频率，以使得在TP的扫描频率下电源适配器新产生的共模噪声的强度小于预设阈值。
其中，TP的扫描频率指的是TP处于工作状态时，TP的控制IC发送驱动信号的频率。
需要说明的是，判断电源适配器产生的共模噪声是否对TP产生干扰时所采用的阈值，可以根据实际应用场景的需求进行设置，本发明实施例在此并不做具体限制。
本发明实施例提供的电源适配器的控制方法，控制装置判断获取到的在TP的扫描频率下电源适配器产生的共模噪声的强度是否大于或等于预设阈值，当确定出共模噪声的强度大于或等于预设阈值时，根据获取到的TP的扫描频率，调整电源适配器的控制IC的工作频率，使得在TP的扫描频率下电源适配器新产生的共模噪声的强度小于预设阈值，这样，通过调整电源适配器的控制IC的工作频率，使得在TP的扫描频率下电源适配器产生的共模噪声不会对TP产生干扰，解决了采用调整TP的扫描频率的方法使得电源适配器产生的共模噪声不会对TP产生干扰时，在电源适配器产生的共模噪声在TP的整个工作频段内都较大的情况下，由于无法寻找到干净的工作频率点使得无法降低电源适配器产生的共模噪声对TP的干扰的问题。并且，由于无需调整TP的扫描频率，因此，TP的控制IC也无需进行刷新工作基准的操作，从而避免了用户在TP上进行连续滑动操作时TP不响应的现象出现，提高了用户体验。
结合第一方面，在一种可能的实现方式中，
可以通过以下步骤调整电源适配器的控制IC的工作频率，以使得在TP的扫描频率下电源适配器新产生的共模噪声的强度小于预设阈值：控制装置根据所述TP的扫描频率，向所述电源适配器的控制IC发送控制信息；所述控制信息用于指示所述电源适配器的控制IC调整自身的工作频率，以使得在所述TP的扫描频率下所述电源适配器新产生的共模噪声的强度小于所述预设阈值。
其中，电源适配器的控制IC在接收到控制信息之后，便可以根据控制信息对自身的工作频率进行调整。以使得在TP的扫描频率下电源适配器新产生的共模噪声不会对TP产生干扰。
在本发明实施例中，电源适配器的控制IC可以通过调整自身控制电路中的振荡电路中包括的电阻的阻值和/或电容的容值来调整自身的工作频率。
结合第一方面和上述可能的实现方式，在另一种可能的实现方式中，
为了降低对电源适配器的输出效率的影响，控制装置可以在确定TP处于工作状态之后，再执行获取TP的扫描频率，以及在TP的扫描频率下电源适配器产生的共模噪声的强度的操作，以便于在TP处于工作状态的情况下，当电源适配器产生的共模噪声会对TP产生干扰时，对电源适配器的控制IC的工作频率进行调整。
结合第一方面和上述可能的实现方式，在另一种可能的实现方式中，
由于TP的控制IC处已知TP的扫描频率，因此，可以通过以下步骤获取TP的扫描频率：控制装置由TP的控制IC处读取TP的扫描频率。
结合第一方面和上述可能的实现方式，在另一种可能的实现方式中，
可以通过以下步骤获取在TP的扫描频率下电源适配器产生的共模噪声的强度：由TP的控制IC处读取在TP的扫描频率下电源适配器产生的共模噪声的强度；或者，检测在TP的扫描频率下电源适配器产生的共模噪声的强度。
本发明实施例的第二方面，提供一种控制装置，包括：
获取单元，用于获取触摸屏TP的扫描频率，以及在所述TP的扫描频率下电源适配器产生的共模噪声的强度；
判断单元，用于判断所述获取单元获取到的所述共模噪声的强度是否大于或等于预设阈值；
控制单元，用于当所述判断单元得到所述共模噪声的强度大于或等于预设阈值时，根据所述TP的扫描频率，调整所述电源适配器的控制IC的工作频率，以使得在所述TP的扫描频率下所述电源适配器新产生的共模噪声的强度小于所述预设阈值。
具体的实现方式可以参考第一方面或第一方面的可能的实现方式提供的电源适配器的控制方法中控制装置的行为功能。
本发明实施例的第三方面，提供一种控制装置，包括：至少一个处理器、存储器、通信接口；
所述存储器，用于存储指令；
所述处理器，用于执行第一方面或第一方面的可能的实现方式提供的电源适配器的控制方法，以实现第二方面或第二方面的可能的实现方式中获取单元、判断单元和控制单元的功能。
结合第三方面，在另一种可能的实现方式中，
所述通信接口，用于执行第一方面的可能的实现方式提供的电源适配器的控制方法，以实现第二方面的可能的实现方式中接收单元的功能。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本发明提供的现有技术中的电源适配器产生的共模噪声的频谱图，以及TP的工作信号的频谱图；
图2为本发明提供的现有技术中的电源适配器产生的共模噪声的频谱图，以及TP的扫描频率调整前和调整后，TP的工作信号的频谱图；
图3为本发明实施例提供的一种应用本发明实施例的系统架构示意图；
图4为本发明实施例提供的一种控制装置组成示意图；
图5为本发明实施例提供的一种电源适配器的控制方法的流程图；
图6为本发明实施例提供的另一种电源适配器的控制方法的流程图；
图7为本发明实施例提供的一种TP的工作信号的频谱图，以及电源适配器的控制IC的工作频率调整前和调整后，电源适配器产生的共模噪声的频谱图；
图8为本发明实施例提供的一种振荡电路；
图9为本发明实施例提供一种共模噪声的波形示意图；
图10为本发明实施例提供另一种控制装置的组成示意图；
图11为本发明实施例提供又一种控制装置的组成示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明实施例的基本原理是：控制装置获取TP的扫描频率，并获取在该TP的扫描频率下电源适配器产生的共模噪声的强度，然后判断获取到的共模噪声的强度是否大于或等于预设阈值，当确定出共模噪声的强度大于或等于预设阈值时，根据获取到的TP的扫描频率，调整电源适配器的控制IC的工作频率，以使得在TP的扫描频率下电源适配器新产生的共模噪声的强度小于预设阈值，这样，便可以解决采用调整TP的扫描频率的方法使得电源适配器产生的共模噪声不会对TP产生干扰时，在电源适配器产生的共模噪声在TP的整个工作频段内都较大的情况下，由于无法寻找到干净的工作频率点使得无法降低电源适配器产生的共模噪声对TP的干扰的问题，且可以避免用户在TP上进行连续滑动操作时TP不响应的现象出现。
下面将结合附图对本发明的实施方式进行详细描述。
如图3所示，图3示出的是可以应用本发明实施例的系统架构的简化示意图。该系统架构可以包括控制装置01、电源适配器02、具备TP的终端设备03、通用串行总线(英文：Universal Serial Bus，简称：USB)线缆04。
其中，电源适配器02通过USB线缆04可以为终端设备03充电。
终端设备03可以为手机、平板电脑等等具备TP的电子设备。
电源适配器02可以由外壳、变压器、金属氧化物半导体(英文：Metal Oxide Semiconductor，简称：MOS)开关管、电感、电容、控制IC、印刷电路板(英文：Printed circuit board，简称；PCB)板等元器件组成。
其中，需要说明的是，在本发明实施例中控制装置01可以包括在电源适配器02中，也可以包括在终端设备03中。本发明实施例在此对控制装置01的设置位置并不作具体限制。在具体的实现中，作为一种实施例，例如图3所示的，控制装置01单独设置在电源适配器02中。
如图4所示，图3中示出的控制装置01可以包括至少一个处理器101、存储器102、通信接口103。
下面结合图4对控制装置01的各个构成部件进行具体的介绍：
处理器101可以是一个处理器，也可以是多个处理元件的统称。例如，处理器101是一个中央处理器(英文：central processing unit，简称：CPU)，也可以是特定集成电 路(英文：Application Specific Integrated Circuit，简称：ASIC)，或者是被配置成实施本发明实施例的一个或多个集成电路，例如：一个或多个微处理器(英文：digital signal processor，简称：DSP)，或，一个或者多个现场可编程门阵列(英文：Field Programmable Gate Array，简称：FPGA)。
其中，处理器101可以通过运行或执行存储在存储器102内的软件程序，以及调用存储在存储器102内的数据，执行控制装置01的各种功能。
在具体的实现中，作为一种实施例，处理器101可以包括一个或多个CPU，例如图4中所示的CPU0和CPU1。
在具体实现中，作为一种实施例，控制装置01可以包括多个处理器，例如图4中所示的处理器101和处理器104这些处理器中的每一个可以是一个单核(single-CPU)处理器，也可以是一个多核(multi-CPU)处理器。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
存储器102可以是只读存储器(英文：read-only memory，英文：ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(英文：random access memory，英文：RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(英文：Electrically Erasable Programmable Read-Only Memory，英文：EEPROM)、只读光盘(英文：Compact Disc Read-Only Memory，英文：CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器可以是独立存在，通过总线与处理器相连接。存储器也可以和处理器集成在一起。
其中，所述存储器102用于存储执行本发明实施例方案的软件程序，并由处理器101来控制执行。
通信接口103，使用任何收发器一类的装置，用于与其他设备通信，通信接口103可以包括接收单元实现接收功能，以及发送单元实现发送功能。
当控制装置01包括在电源适配器02中时，处理器101可以为电源适配器02的控制IC，也可以单独设置。当控制装置01包括在终端设备03中时，处理器101可以为终端设备03的处理器，也可以单独设置。
控制装置01的存储器102根据设置位置，可以为电源适配器02的存储器或终端设备03的存储器，或单独设置。
通信接口103可以为USB接口，或蓝牙，Wi-Fi等短距离通信接口。
图4中示出的设备结构并不构成对控制装置的限定，可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。
在具体实现中：
所述处理器101，用于获取TP的扫描频率，以及在TP的扫描频率下电源适配器产生的共模噪声的强度，判断共模噪声的强度是否大于或等于预设阈值，当共模噪声的强度大于或等于预设阈值时，根据TP的扫描频率，调整电源适配器的控制IC的工作频率，以使得在TP的扫描频率下电源适配器新产生的共模噪声的强度小于所述预设阈值。
图5为本发明实施例提供的一种电源适配器的控制方法的流程图，如图5所示，该方 法可以包括：
201、控制装置获取TP的扫描频率，以及在TP的扫描频率下电源适配器产生的共模噪声的强度。
其中，TP的扫描频率下的电源适配器产生的共模噪声的强度，即共模噪声的频率为TP的扫描频率的共模噪声的强度。
202、控制装置判断共模噪声的强度是否大于或等于预设阈值。
其中，为了避免电源适配器产生的共模噪声对TP产生干扰，控制装置可以获取TP的扫描频率，以及在TP的扫描频率下电源适配器产生的共模噪声的强度这两个参数，并在获取到这两个参数之后，判断获取到的共模噪声的强度是否大于或等于预设阈值，以确定电源适配器产生的共模噪声是否会对TP产生干扰。
203、当共模噪声的强度大于或等于预设阈值时，控制装置根据TP的扫描频率，调整电源适配器的控制IC的工作频率，以使得在TP的扫描频率下电源适配器新产生的共模噪声的强度小于预设阈值。
其中，当控制装置确定出获取到的在TP的扫描频率下电源适配器产生的共模噪声的强度大于或等于预设阈值时，表明电源适配器产生的共模噪声会对TP产生干扰，此时，控制装置可以根据获取到的TP的扫描频率，调整电源适配器的控制IC的工作频率，以降低TP的扫描频率处电源适配器产生的共模噪声的强度，以使得在TP的扫描频率下电源适配器新产生的共模噪声的强度小于预设阈值，从而达到TP不会受到电源适配器产生的共模噪声的干扰的目的。
本发明实施例提供的电源适配器的控制方法，控制装置判断获取到的在TP的扫描频率下电源适配器产生的共模噪声的强度是否大于或等于预设阈值，当确定出共模噪声的强度大于或等于预设阈值时，根据获取到的TP的扫描频率，调整电源适配器的控制IC的工作频率，使得在TP的扫描频率下电源适配器新产生的共模噪声的强度小于预设阈值，这样，通过调整电源适配器的控制IC的工作频率，使得在TP的扫描频率下电源适配器产生的共模噪声不会对TP产生干扰，解决了采用调整TP的扫描频率的方法使得电源适配器产生的共模噪声不会对TP产生干扰时，在电源适配器产生的共模噪声在TP的整个工作频段内都较大的情况下，由于无法寻找到干净的工作频率点使得无法降低电源适配器产生的共模噪声对TP的干扰的问题。并且，由于无需调整TP的扫描频率，因此，TP的控制IC也无需进行刷新工作基准的操作，从而避免了用户在TP上进行连续滑动操作时TP不响应的现象出现，提高了用户体验。
图6为本发明实施例提供的另一种电源适配器的控制方法的流程图，如图6所示，该方法可以包括：
301、控制装置判断TP是否处于工作状态。
为了能够降低对电源适配器的输出效率的影响，控制装置可以对TP的工作状态进行监控，并在监控得到TP处于工作状态时，再检测电源适配器产生的共模噪声是否对TP产生干扰。在本发明实施例中，控制装置可以通过判断是否接收到TP的控制IC发送的用于指示TP处于工作状态的状态信息来确定TP是否处于工作状态。TP处于工作状态时可以检测到触摸操作。在一些设备中触摸屏点亮时TP可以检测操作，处于工作状态；还有一些设备中触摸屏没有点亮时TP也可以检测操作，处于工作状态，可以实现一些熄屏操作。
当控制装置确定TP处于工作状态时，可以执行步骤302；当控制装置确定TP不在工作状态时，可以重新执行步骤301，以继续监控TP的工作状态。当TP不在工作状态时，电源适配器可以按照充电最优方式进行充电，如进行大电流充电等。
302、控制装置获取TP的扫描频率，以及在TP的扫描频率下电源适配器产生的共模噪声的强度。
其中，当控制装置确定TP处于工作状态时，此时控制装置可以获取TP的扫描频率，以及在TP的扫描频率下电源适配器产生的共模噪声的强度，以便用于后续检测电源适配器产生的共模噪声是否对TP产生干扰。
获取TP的扫描频率以及TP的扫描频率下电源适配器产生的共模噪声的强度，可以是以预设周期进行获取；或者以预设时间长度进行获取，如估计不同充电状态的充电时长，在不同充电状态开始时获取，如在恒流充电开始时获取，以及在涓流充电开始时获取。
其中，在本发明实施例的一种可能的实现方式中，控制装置获取TP的扫描频率具体的可以是：控制装置由TP的控制IC处读取TP的扫描频率。由于现有技术中TP的控制IC已知TP的扫描频率，因此控制装置可以直接由TP的控制IC处，读取TP的扫描频率。其中，在具体实现时，当控制装置设置在电源适配器中时，控制装置可以通过USB线缆的D+、D-实现与TP的控制IC的通信，即控制装置可以通过USB线缆的D+、D-读取TP的扫描频率。
在本发明实施例的一种可能的实现方式中，控制装置获取在TP的扫描频率下电源适配器产生的共模噪声的强度具体的可以是：控制装置由TP的控制IC处读取在TP的扫描频率下电源适配器产生的共模噪声的强度。其中，在现有技术中TP的控制IC也已知在TP的扫描频率下电源适配器产生的共模噪声的强度，因此控制装置也可以直接由TP的控制IC处，读取在TP的扫描频率下电源适配器产生的共模噪声的强度。在具体实现时，当控制装置设置在电源适配器中时，控制装置也可以通过USB线缆的D+、D-读取在TP的扫描频率下电源适配器产生的共模噪声的强度。在本发明实施例的另一种可能的实现方式中，控制装置获取在TP的扫描频率下电源适配器产生的共模噪声的强度具体的可以是：控制装置检测在TP的扫描频率下电源适配器产生的共模噪声的强度。其中，在具体实现时，控制装置可以通过检测USB线缆的地线、电源线、屏蔽层等，或者可以通过检测终端设备的结构地，以得到在TP的扫描频率下电源适配器产生的共模噪声的强度。
303、控制装置判断共模噪声的强度是否大于或等于预设阈值。
其中，在控制装置获取到TP的扫描频率，以及在TP的扫描频率下电源适配器产生的共模噪声的强度之后，便可以通过判断共模噪声的强度是否大于或等于预设阈值，以确定电源适配器产生的共模噪声是否对TP产生干扰。当共模噪声的强度大于或等于预设阈值时，表明电源适配器产生的共模噪声会对TP产生干扰，此时，可以执行步骤304；当共模噪声的强度小于预设阈值时，表明电源适配器产生的共模噪声不会对TP产生干扰，此时可以重新执行步骤301，以便在电源适配器产生的共模噪声对TP产生干扰时，能够及时的控制电源适配器的控制IC通过调整自身的工作频率，以达到电源适配器产生的共模噪声不会对TP产生干扰的目的。
304、控制装置根据TP的扫描频率，调整电源适配器的控制IC的工作频率。
具体地，控制装置可以根据所述TP的扫描频率，向所述电源适配器的控制IC发送控 制信息，其中，控制信息用于指示电源适配器的控制IC调整自身的工作频率，以使得在TP的扫描频率下电源适配器新产生的共模噪声的强度小于预设阈值。
控制装置可以向所述电源适配器的控制IC发送所述TP的扫描频率，这样电源适配器的控制IC可以根据TP的扫描频率，调整自身的工作频率，使得TP的扫描频率处于适配器的控制IC产生的共模噪声较小的频率范围内，如图7所示，即以使得在TP的扫描频率下电源适配器新产生的共模噪声的强度小于预设阈值。电源适配器的控制IC可以根据TP的扫描频率，计算出自身需要调整的工作频率，由此计算得出相应的电路参数值，然后调整自身的电路参数，以实现工作频率调整。如电路适配器的控制IC通过调整电阻值调整电源适配器的控制IC的工作频率，则计算出需要调整的电阻值；若电路适配器的控制IC通过调整电容值调整电源适配器的控制IC的工作频率，则计算出需要调整的电容值，以此类推。
控制装置还可以计算出电源适配器的控制IC的工作频率，发送给电源适配器以指示电源适配器的控制IC按照计算结果调整工作频率，电源适配器的控制IC根据收到的工作频率，计算相应的电路参数值进行工作频率调整。或者控制装置可以计算出调整电源适配器的控制IC的工作频率的电路参数值，将所述电路参数值发给电源适配器的控制IC，电源适配器的控制IC根据收到的电路参数值调整对应的电路参数，实现调整自身的工作频率。如电路适配器的控制IC通过调整电阻值调整电源适配器的控制IC的工作频率，则控制装置计算出需要调整的电阻值，发给电源适配器的控制IC；若电路适配器的控制IC通过调整电容值调整电源适配器的控制IC的工作频率，则控制装置计算出需要调整的电容值，发送给电源适配器的控制IC，以此类推。
因此上述控制信息中可以携带TP的扫描频率、电源适配器的控制IC需调整的工作频率，或电源适配器的控制IC需调整的电路参数值，本领域技术人员可根据电源适配器的设计得出调整电源适配器的控制IC的工作频率的各种技术方案，本发明实施例在此不作限制。
上述实施例，可以在充电时循环执行上述步骤301-304；也可以在开始充电时，执行步骤302-304，在步骤304中调整完电源适配器的控制IC的工作频率后，则完成方法流程，待下次进行充电时再执行302-304.。
具体的，电源适配器的控制IC可以通过调整控制IC的振荡电路中的电阻，以达到调整自身工作频率的目的。示例性的，如图8所示的振荡电路，在该电路中，恒流源用于对RC振荡电路充放电，比较器一端输入锯齿波，另一端为参考电压(滞环)，当电阻R的阻值发生变化时，RC振荡电路的充放电时间(RC振荡电路的充放电时间T＝R*C)也会发生变化，这样该电路的输出频率(＝1/(2πRC))也会发生变化，而该电路的输出频率与电源适配器的控制IC的工作频率存在一定的对应关系，因此电源适配器的控制IC的工作频率也会发生变化，这样便可以通过调整电阻R的阻值，以达到调整电源适配器的控制IC的工作频率的目的。振荡电路的输出频率和电源适配器的控制IC的工作频率的对应关系和具体的电源适配器的设计有关。
当然，也可以通过改变振荡电路中的电容C的容值，达到调整电源适配器的控制IC的工作频率的目的，还可以通过同时改变振荡电路中的电阻的阻值R和电容C的容值，达到调整电源适配器的控制IC的工作频率的目的，其原理与改变电阻R的阻值达到调整电 源适配器的控制IC的工作频率的原理类似，本发明实施例在此不再一一赘述。
图8所示的振荡电路为RC振荡电路，实际应用中还可以有其他类型的振荡电路，如LC振荡电路等。对于LC振荡电路，可以通过调节电感L和/或电容C来调节振荡电路的输出频率。
上述调整R,C,L的值可以通过选择电路来实现。比如调整电阻R，可以设置具有多个支路的选择电路，每个支路的电阻值不同，通过选通不同的支路，以此调整电路R的阻值。
基于电源适配器的不同的电路设计，调整控制IC工作频率相应地有不同的方法。
步骤304中，控制装置可以计算出振荡电路需要调整的电阻值、或电容值、或电感值，发给电源适配器的控制IC，使电源适配器的控制IC按照计算出的电阻值、电容值、或电感值对自身的工作频率进行调整。
若上述振荡电路设计在控制IC之外，与控制IC相连接，则控制装置可以直接调整所述振荡电路，以调整所述控制IC的工作频率。
当电源适配器的控制IC的工作频率发生变化之后，在TP的扫描频率下电源适配器新产生的共模噪声的强度也会发生变化，因此可以通过判断在电源适配器的控制IC的工作频率发生变化之后，在TP的扫描频率下电源适配器新产生的共模噪声的强度小于预设阈值时，便表明找到了合适的电源适配器的控制IC的工作频率，这样便可以使得电源适配器产生的共模噪声不会对TP产生干扰。
其中，在具体实现中，可以认为当TP的扫描频率处于电源适配器产生的共模噪声的波峰对应的共模噪声的频率位置时，此时电源适配器产生的共模噪声会对TP产生干扰，而当TP的扫描频率处于电源适配器产生的共模噪声的波谷对应的共模噪声的频率位置时，此时电源适配器产生的共模噪声不会对TP产生干扰，因此，可以通过调整电源适配器的控制IC的工作频率，使得TP的扫描频率处于电源适配器产生的共模噪声的波谷位置，从而达到不会对TP产生干扰的目的。具体的，电源适配器产生的共模噪声的频谱图可以如图9所示(理想情况下的频谱图)，在图9的左图中，f表示电源适配器的控制IC的工作频率，△f在表示抖频，且△f为已知量，电源适配器产生的共模噪声的波谷位置属于：n(f+△f)～(n+1)(f-△f)，可以看出，当f发生变化时，电源适配器产生的共模噪声的波谷位置也会随着变化，这样，在f发生变化之后，若判断得到变化后的波谷位置对应的频率包含TP的扫描频率，则表明找到了合适的电源适配器的控制IC的工作频率f，这样便可以使得电源适配器产生的共模噪声不会对TP产生干扰。在图9的右图中，f表示电源适配器的控制IC的工作频率，△f表示基频的波峰宽度，且△f为已知量，电源适配器产生的共模噪声的波谷位置属于为：nf～(n+1)(f-△f)，可以看出，当f发生变化时，电源适配器产生的共模噪声的波谷位置也会随着变化，这样，在f发生变化之后，若判断得到变化后的波谷位置对应的频率包含TP的扫描频率，则表明找到了合适的电源适配器的控制IC的工作频率f，这样便可以使得电源适配器产生的共模噪声不会对TP产生干扰。上述n为大于等于1的整数。
以图9左图为例，可以设置TP的扫描频率(fTP)为在波谷中间频率，这样fTP＝n(f+△f)+((n+1)(f-△f)-n(f+△f))/2，即fTP＝(n+1/2)f-△f/2，则f＝(2fTP+△f)/(2n+1)，其中fTP和△f是已知的，n的取值范围是可以枚举的，如1至5，这样可以得出5个f的值，控制IC的工作频率f可以从这5个f的值中选择一个，选择电源适配器可以支持的 f。
以图9右图为例，可以设置TP的扫描频率(fTP)为在波谷中间频率，这样fTP＝nf+((n+1)(f-△f)-nf)/2，即fTP＝(n+1/2)f-(n+1)△f/2，则f＝(2fTP+(n+1)△f)/(2n+1)，其中fTP和△f是已知的，n的取值范围是可以枚举的，如1至5，这样可以得出5个f的值，控制IC的工作频率f可以从这5个f的值中选择一个，选择电源适配器的控制IC可以支持的f。
上述仅以TP的扫描频率为波谷中间频率为例，可选的TP的扫描频率可以靠近波谷的左侧或右侧。上述计算f的方式为本发明实施例的举例，也可以根据电源适配器的控制IC的工作频率f的可调范围，确定n，从而确定f的取值。
如前所述可以通过调节振荡电路的电阻R，电容C，电感L来调节振荡电路的输出频率以此来调整电源适配器的控制IC的工作频率。
本发明实施例提供的电源适配器的控制方法，控制装置判断获取到的在TP的扫描频率下电源适配器产生的共模噪声的强度是否大于或等于预设阈值，当确定出共模噪声的强度大于或等于预设阈值时，根据获取到的TP的扫描频率，调整电源适配器的控制IC的工作频率，使得在TP的扫描频率下电源适配器新产生的共模噪声的强度小于预设阈值，这样，通过调整电源适配器的控制IC的工作频率，使得在TP的扫描频率下电源适配器产生的共模噪声不会对TP产生干扰，解决了采用调整TP的扫描频率的方法使得电源适配器产生的共模噪声不会对TP产生干扰时，在电源适配器产生的共模噪声在TP的整个工作频段内都较大的情况下，由于无法寻找到干净的工作频率点使得无法降低电源适配器产生的共模噪声对TP的干扰的问题。并且，由于无需调整TP的扫描频率，因此，TP的控制IC也无需进行刷新工作基准的操作，从而避免了用户在TP上进行连续滑动操作时TP不响应的现象出现，提高了用户体验。
并且，控制装置在确定TP处于工作状态之后，若确定电源适配器产生的共模噪声对TP产生干扰，才会对电源适配器的控制IC的工作频率进行调整，降低了对电源适配器的输出效率的影响。
图10为本发明实施例提供另一种控制装置的组成示意图，如图10所示，该控制装置可以包括：获取单元41、判断单元42、控制单元43。
获取单元41，用于获取触摸屏TP的扫描频率，以及在所述TP的扫描频率下电源适配器产生的共模噪声的强度。
判断单元42，用于判断所述获取单元41获取到的所述共模噪声的强度是否大于或等于预设阈值。
控制单元43，用于当所述判断单元42得到所述共模噪声的强度大于或等于预设阈值时，根据所述TP的扫描频率，调整所述电源适配器的控制IC的工作频率，以使得在所述TP的扫描频率下所述电源适配器新产生的共模噪声的强度小于所述预设阈值。
在本发明实施例中，进一步的，所述控制单元43，具体用于根据所述TP的扫描频率，向所述电源适配器的控制IC发送控制信息；所述控制信息用于指示所述电源适配器的控制IC调整自身的工作频率，以使得在所述TP的扫描频率下所述电源适配器新产生的共模噪声的强度小于所述预设阈值。
在本发明实施例中，进一步的，如图11所示，控制装置还可以包括：确定单元44。
确定单元44，用于在所述获取单元41获取触摸屏TP的扫描频率，以及在所述TP的扫描频率下电源适配器产生的共模噪声的强度之前，确定所述TP处于工作状态。
在本发明实施例中，进一步的，所述获取单元41，具体用于由所述TP的控制IC处读取所述TP的扫描频率。
在本发明实施例中，进一步的，所述获取单元41，具体用于由所述TP的控制IC处读取在所述TP的扫描频率下所述电源适配器产生的共模噪声的强度；或者，检测在所述TP的扫描频率下所述电源适配器产生的共模噪声的强度。
需要说明的是，本发明实施例提供的控制装置中各功能模块的具体工作过程可以参考方法实施例中对应过程的具体描述，本发明实施例在此不再详细赘述。
另外，在本发明实施例中，图4所示的控制装置中的包括的处理器101和处理器104可以通过执行本发明实施例图5或图6提供的电源适配器的控制方法，以实现本发明实施例图10或图11所示的控制装置中获取单元41、判断单元42、控制单元43和确定单元44的功能。例如，处理器101和处理器104通过执行图5所示的步骤201，以实现本发明实施例图10或图11所示的控制装置中获取单元41的功能。再例如，处理器101和处理器104通过执行图6所示的步骤303，以实现本发明实施例图10或图11所示的控制装置中判断单元42的功能。
本发明实施例提供的控制装置，用于执行上述电源适配器的控制方法，因此可以达到与上述电源适配器的控制方法相同的效果。
通过以上的实施方式的描述，所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述模块或单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个装置，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是一个物理单元或多个物理单元，即可以位于一个地方，或者也可以分布到多个不同地方。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个可读取存储介质中。基于这样的理解，本发明实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该软件产品存储在一个存储介质中，包括若干指令用以使得一个设备(可以是单片机，芯片等)或处理器(processor)执行本发明各个实施例所述方法的全部或部分步骤。 而前述的存储介质包括：U盘、移动硬盘、只读存储器(英文：Read-Only Memory，简称：ROM)、随机存取存储器(英文：Random Access Memory，简称：RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (11)

  1. 一种电源适配器的控制方法，其特征在于，包括：
    获取触摸屏TP的扫描频率，以及在所述TP的扫描频率下电源适配器产生的共模噪声的强度；
    判断所述共模噪声的强度是否大于或等于预设阈值；
    当所述共模噪声的强度大于或等于预设阈值时，根据所述TP的扫描频率，调整所述电源适配器的控制集成芯片IC的工作频率，以使得在所述TP的扫描频率下所述电源适配器新产生的共模噪声的强度小于所述预设阈值。
  2. 根据权利要求1所述的方法，其特征在于，所述根据所述TP的扫描频率，调整所述电源适配器的控制集成芯片IC的工作频率，以使得在所述TP的扫描频率下所述电源适配器新产生的共模噪声的强度小于所述预设阈值，包括：
    根据所述TP的扫描频率，向所述电源适配器的控制IC发送控制信息；所述控制信息用于指示所述电源适配器的控制IC调整自身的工作频率，以使得在所述TP的扫描频率下所述电源适配器新产生的共模噪声的强度小于所述预设阈值。
  3. 根据权利要求1或2所述的方法，其特征在于，在所述获取触摸屏TP的扫描频率，以及在所述TP的扫描频率下电源适配器产生的共模噪声的强度之前，还包括：
    确定所述TP处于工作状态。
  4. 根据权利要求1-3中任一项所述的方法，其特征在于，所述获取所述TP的扫描频率包括：
    由所述TP的控制IC处读取所述TP的扫描频率。
  5. 根据权利要求1-4中任一项所述的方法，其特征在于，所述获取在所述TP的扫描频率下所述电源适配器产生的共模噪声的强度：
    由所述TP的控制IC处读取在所述TP的扫描频率下所述电源适配器产生的共模噪声的强度；或者，
    检测在所述TP的扫描频率下所述电源适配器产生的共模噪声的强度。
  6. 一种控制装置，其特征在于，包括：
    获取单元，用于获取触摸屏TP的扫描频率，以及在所述TP的扫描频率下电源适配器产生的共模噪声的强度；
    判断单元，用于判断所述获取单元获取到的所述共模噪声的强度是否大于或等于预设阈值；
    控制单元，用于当所述判断单元得到所述共模噪声的强度大于或等于预设阈值时，根据所述TP的扫描频率，调整所述电源适配器的控制集成芯片IC的工作频率，以使得在所述TP的扫描频率下所述电源适配器新产生的共模噪声的强度小于所述预设阈值。
  7. 根据权利要求6所述的装置，其特征在于，所述控制单元，具体用于：
    根据所述TP的扫描频率，向所述电源适配器的控制IC发送控制信息；所述控制信息用于指示所述电源适配器的控制IC调整自身的工作频率，以使得在所述TP的扫描频率下所述电源适配器新产生的共模噪声的强度小于所述预设阈值。
  8. 根据权利要求6或7所述的装置，其特征在于，还包括：
    确定单元，用于在所述获取单元获取触摸屏TP的扫描频率，以及在所述TP的扫描频率下电源适配器产生的共模噪声的强度之前，确定所述TP处于工作状态。
  9. 根据权利要求6-8中任一项所述的装置，其特征在于，所述获取单元，具体用于：
    由所述TP的控制IC处读取所述TP的扫描频率。
  10. 根据权利要求6-9中任一项所述的装置，其特征在于，所述获取单元，具体用于：
    由所述TP的控制IC处读取在所述TP的扫描频率下所述电源适配器产生的共模噪声的强度；或者，
    检测在所述TP的扫描频率下所述电源适配器产生的共模噪声的强度。
  11. 一种控制装置，其特征在于，包括：至少一个处理器、存储器、通信接口；
    所述存储器，用于存储指令；
    所述处理器，用于调用存储在所述存储器中的指令以实现方法权利要求1-5中任一项所述的电源适配器的控制方法。
PCT/CN2017/085584 2016-05-26 2017-05-23 一种电源适配器的控制方法及控制装置 WO2017202315A1 (zh)

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