WO2018082186A1 - Emi positioning method and device for television - Google Patents

Emi positioning method and device for television Download PDF

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Publication number
WO2018082186A1
WO2018082186A1 PCT/CN2016/113453 CN2016113453W WO2018082186A1 WO 2018082186 A1 WO2018082186 A1 WO 2018082186A1 CN 2016113453 W CN2016113453 W CN 2016113453W WO 2018082186 A1 WO2018082186 A1 WO 2018082186A1
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WO
WIPO (PCT)
Prior art keywords
emi
circuit
unit
subunit
radiation
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PCT/CN2016/113453
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French (fr)
Chinese (zh)
Inventor
康伟
Original Assignee
深圳Tcl数字技术有限公司
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Publication of WO2018082186A1 publication Critical patent/WO2018082186A1/en

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/001Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
    • G01R31/002Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing where the device under test is an electronic circuit

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to an EMI positioning method and apparatus for a television set.
  • Electromagnetic interference referred to as EMI (EMI, Electro Magnetic Interference (electromagnetic interference) is a signal that is harmful to the human body or the environment. Electrical products, especially TV sets, usually need to be tested by EMI to confirm whether the product can meet the EMI requirements of the sales territory. When the TV cannot meet the sales territory. When EMI indicators are required, TV manufacturers must take effective measures to improve them until they reach the EMI requirements for the sales territory. In the prior art, there are many methods for improving the EMI of a television set, such as adding a absorbing material such as a magnetic ring, an aluminum foil or a foam, or adding shielding measures, or adding a component such as a capacitor, a magnetic bead, or the like to a corresponding circuit of the television.
  • EMI Electromagnetic interference
  • the main object of the present invention is to provide an EMI positioning method for a television set, which aims to improve EMI positioning efficiency and improve EMI positioning accuracy.
  • the present invention provides an EMI positioning method for a television set, and the EMI positioning method of the television set includes the following steps:
  • the EMI radiation value detected by the EMI detector for each EMI circuit subunit under different working states, different working modules or different operating frequencies, the EMI radiation value including an EMI radiation frequency value and an EMI radiation amplitude value;
  • the EMI interference source circuit sub-unit is determined by analysis.
  • the method before receiving the preset EMI test command, before controlling the working state, the working module or the working frequency of each tested EMI circuit subunit of the television set, the method further includes:
  • the television is divided into modules, and the television is divided into several EMI modules;
  • each of the EMI modules contains a switching signal or a high-frequency signal
  • each of the EMI modules is separately divided into circuit units, and each of the EMI modules is divided into a plurality of EMI circuit units;
  • Each of the EMI circuit units is divided into sub-unit circuits according to whether each of the EMI circuit units includes a switching signal or a high-frequency signal, and each of the EMI circuit units is divided into a plurality of EMI circuit sub-units to be tested.
  • controlling the working state, the working module or the operating frequency of each tested EMI circuit subunit of the television set includes:
  • the EMI test UI interface includes each of the EMI modules of the television set, and an EMI circuit unit corresponding to each of the EMI modules And a measured EMI circuit subunit corresponding to each EMI circuit unit;
  • the operating state, the working circuit unit, or the operating frequency of the selected EMI circuit subunit is controlled.
  • the analyzing and determining the EMI interference source circuit subunit according to the obtained EMI radiation value comprises:
  • the measured EMI circuit subunit is EMI Interference source circuit unit
  • the EMI circuit subunit to be tested When the operating state of the EMI circuit subunit to be tested is changed, if the obtained EMI radiation frequency value and the EMI radiation amplitude value are not changed, it is determined that the EMI circuit subunit to be tested is not an EMI interference source circuit unit.
  • the analyzing and determining the EMI interference source circuit sub-unit according to the obtained EMI radiation value further includes:
  • the EMI circuit subunit is an EMI interference source circuit unit
  • the unit is not an EMI interference source circuit unit
  • the EMI radiation sub-unit When the EMI radiation sub-unit is not in operation, the EMI radiation value is obtained, and then the EMI circuit sub-unit under test is determined not to be an EMI interference source circuit unit.
  • the present invention also provides an EMI positioning device for a television set, where the EMI positioning device of the television set includes:
  • Control module for controlling the working state, working module or working frequency of each EMI circuit sub-unit of the television when receiving the preset EMI test command;
  • EMI radiation value acquisition module used to obtain the EMI radiation value detected by the EMI detector for each EMI circuit subunit under different working states, different working modules or different operating frequencies, the EMI radiation value including the EMI radiation frequency Value and EMI radiation amplitude value;
  • the analysis module is configured to analyze and determine the EMI interference source circuit sub-unit according to the obtained EMI radiation value.
  • the EMI positioning device of the television set further comprises:
  • the first dividing module is configured to perform module division on the television according to whether the switching power supply circuit or the high-frequency signal circuit is included, and divide the television into a plurality of EMI modules;
  • a second dividing module configured to divide each of the EMI modules into circuit units according to whether each of the EMI modules includes a switching signal or a high-frequency signal, and divide each of the EMI modules into a plurality of EMI circuit units;
  • a third dividing module configured to divide each of the EMI circuit units into sub-unit circuits according to whether each of the EMI circuit units includes a switching signal or a high-frequency signal, and divide each of the EMI circuit units into a plurality of EMI circuit subunit to be tested.
  • control module comprises:
  • the UI interface calling unit is configured to: call and display a preset EMI test UI interface when receiving the preset EMI test command; the EMI test UI interface includes each of the EMI modules of the television, and each of the EMI The EMI circuit unit corresponding to the module and the EMI circuit subunit corresponding to each EMI circuit unit; when receiving the EMI module selection instruction, calling and displaying each EMI circuit unit corresponding to the selected EMI module; Retrieving and displaying each EMI circuit sub-unit corresponding to the selected EMI circuit unit when the EMI circuit unit selects an instruction;
  • the control unit controls the working state, the working circuit unit or the operating frequency of the selected EMI circuit subunit when receiving the EMI circuit subunit selection command.
  • the analysis module is further configured to:
  • the measured EMI circuit subunit is EMI Interference source circuit unit
  • the EMI circuit subunit to be tested When the operating state of the EMI circuit subunit to be tested is changed, if the obtained EMI radiation frequency value and the EMI radiation amplitude value are not changed, it is determined that the EMI circuit subunit to be tested is not an EMI interference source circuit unit.
  • the analysis module is further configured to:
  • the EMI circuit subunit is an EMI interference source circuit unit
  • the unit is not an EMI interference source circuit unit
  • the EMI radiation sub-unit When the EMI radiation sub-unit is not in operation, the EMI radiation value is obtained, and then the EMI circuit sub-unit under test is determined not to be an EMI interference source circuit unit.
  • the invention provides an EMI positioning method for a television set.
  • the EMI positioning method of the television set comprises the following steps: when receiving a preset EMI test command, working state and working on each measured EMI circuit subunit of the television set Controlling the module or operating frequency; obtaining the EMI radiation value detected by the EMI detector for each EMI circuit subunit under different operating states, different working modules or different operating frequencies, the EMI radiation value including the EMI radiation frequency value And EMI radiation amplitude value; according to the obtained EMI radiation value, the EMI interference source circuit sub-unit is determined by analysis.
  • the EMI positioning method of the television set of the invention has the advantages of high EMI positioning efficiency and high EMI positioning accuracy.
  • FIG. 1 is a schematic flow chart of a first embodiment of an EMI positioning method for a television set according to the present invention
  • FIG. 2 is a schematic flow chart of a second embodiment of an EMI positioning method for a television set according to the present invention
  • FIG. 3 is a schematic flow chart of a third embodiment of an EMI positioning method for a television set according to the present invention.
  • FIG. 4 is a schematic diagram of functional modules of a first embodiment of an EMI positioning apparatus for a television set according to the present invention
  • FIG. 5 is a schematic diagram of functional modules of a second embodiment of an EMI positioning apparatus for a television set according to the present invention.
  • FIG. 6 is a schematic diagram of a refinement function module of a control module in a third embodiment of an EMI positioning apparatus for a television set according to the present invention
  • FIG. 7 is a schematic structural diagram of a first embodiment of an EMI module of a television set in an EMI positioning method of a television set according to the present invention
  • FIG. 8 is a schematic structural diagram of a circuit unit of a movement board in a second embodiment of an EMI module of a television set in an EMI positioning method of a television set according to the present invention
  • FIG. 9 is a schematic structural diagram of a circuit subunit of a SOC circuit unit in a movement board in a third embodiment of an EMI module of a television set in an EMI positioning method of a television set according to the present invention.
  • the present invention provides an EMI positioning method for a television set.
  • the EMI positioning method of the television set includes:
  • Step S10 when receiving the preset EMI test command, controlling the working state, the working module or the working frequency of each tested EMI circuit subunit of the television;
  • the EMI positioning method of the television set provided by the embodiment of the invention is mainly applied to the EMI positioning test system of the television set, and is used for accurately and quickly locating the EMI interference source of the television set, thereby quickly and effectively finding corresponding measures to improve the EMI radiation of the television set.
  • the value of the TV product meets the EMI requirements of the sales territory.
  • the EMI positioning method of the television set is first, when receiving a preset EMI test command, an operating state, a working module, or an operating frequency of each tested EMI circuit subunit of the television set. Take control.
  • the preset EMI test command may be an EMI test command issued by a TV remote controller, for example, an EMI test dedicated button is added to a remote controller of the television, and the tester presses the button.
  • the EMI test dedicated button is used to issue the preset EMI test command, and the television triggers the television to enter the EMI test workflow when receiving the EMI test command issued by the remote controller; in another embodiment, the tester
  • the purpose of inputting the preset EMI test command may also be achieved by pressing a combination of a plurality of digital keys, a plurality of alphabetic keys, or a plurality of numeric keys plus a plurality of alphabetic keys on the remote control of the television, that is, equivalent to passing the remote controller. Entering the preset EMI test password triggers the TV to enter the EMI test.
  • an EMI test dedicated button is added to the remote controller of the television, and the EMI positioning method of the television set of the present invention is performed by pressing the EMI test dedicated button to trigger the television to enter the EMI test.
  • the EMI positioning method of the television set provided by the embodiment, when receiving the preset EMI test command issued by the user by pressing an EMI test dedicated button added on the remote controller, the measured EMI of the television set The operating state, working module or operating frequency of the circuit subunit is controlled.
  • Step S20 Acquire an EMI radiation value detected by the EMI detector for each EMI circuit subunit under different working states, different working modules or different operating frequencies, where the EMI radiation value includes an EMI radiation frequency value and an EMI radiation amplitude. value;
  • Step S30 analyzing and determining the EMI interference source circuit sub-unit according to the obtained EMI radiation value.
  • the EMI circuit subunits of the TV are tested. Control of the working state, working module or working frequency, then pass The EMI detector detects the EMI radiation value (including the EMI radiation frequency value and the EMI radiation amplitude value) of each EMI circuit subunit under different working states, different working modules or different operating frequencies, and then acquires the EMI detector for each measured.
  • the EMI radiation frequency value and the EMI radiation amplitude value detected by the EMI circuit subunit under different working states, different working modules or different operating frequencies, and the EMI interference source is analyzed and determined according to the obtained EMI radiation frequency value and the EMI radiation amplitude value.
  • a circuit subunit that enables positioning of the EMI interference source to the television.
  • the EMI interference source of the television is determined to be specifically in the television. Which circuit subunit is on.
  • controlling the EMI circuit subunit to be tested from the working state to the inactive state ie, the operating state of the EMI circuit subunit under test is changed
  • analyzing the EMI in the case of changing the operating state of the EMI circuit subunit under test Whether the EMI radiation frequency value and the EMI radiation amplitude value detected by the detector are found to be changed, and if the EMI radiation frequency value and the EMI radiation amplitude value detected by the EMI detector are not changed, the measured EMI circuit can be determined.
  • the unit is not the EMI interference source circuit subunit of the television set, that is, the EMI interference source of the television is not on the EMI circuit subunit to be tested, that is, the EMI positioning method of the television set of the embodiment, when the EMI circuit to be tested is changed
  • the EMI circuit sub-unit is not an EMI interference source circuit unit; otherwise, if the measured EMI circuit is changed
  • the EMI circuit subunit is an EMI interference source circuit subunit of the television set, that is, the EMI interference source of the television set can be positioned on the EMI circuit subunit to be tested, that is, the EMI positioning method of the television set of the embodiment, when the When the measured EMI radiation sub-unit is in operation, if the obtained EMI radiation frequency value and the EMI radiation amplitude value do not change, it is determined that the measured EMI circuit sub-unit is not an EMI interference source circuit unit; otherwise, if the measured EMI circuit is changed
  • the EMI circuit subunit is an EMI interference source circuit subunit of the television set,
  • the EMI interference source circuit sub-unit of the television can also be determined. Specifically, when the measured EMI circuit subunit operates, after changing its working mode or changing its working frequency, if the obtained radiation frequency value changes or the acquired radiation amplitude value changes, the judgment center The EMI circuit subunit to be tested is an EMI interference source circuit unit; when the EMI circuit subunit is operated, after changing its working mode or changing its operating frequency, if the obtained EMI radiation frequency value and EMI radiation amplitude value are obtained If no change occurs, it is determined that the EMI circuit subunit to be tested is not an EMI interference source circuit unit.
  • the EMI positioning method of the television provided by the embodiment controls the working state, working module or working frequency of each EMI circuit sub-unit of the television when receiving the preset EMI test command; and then acquires EMI The EMI radiation value detected by the detector for each EMI circuit subunit under different working states, different working modules or different operating frequencies; finally, the EMI interference source circuit subunit is analyzed and determined according to the obtained EMI radiation value.
  • the EMI positioning method of the television set provided by this embodiment has the advantages of high EMI positioning efficiency, high EMI positioning accuracy, and low testing cost for the EMI positioning method for the television set in the prior art.
  • the method further includes:
  • Step S01 according to whether the switching power supply circuit or the high-frequency signal circuit is included, the television is divided into modules, and the television is divided into several EMI modules;
  • Step S02 according to whether each of the EMI modules contains a switching signal or a high-frequency signal, each of the EMI modules is separately divided into circuit units, and each of the EMI modules is divided into a plurality of EMI circuit units;
  • Step S03 according to whether each of the EMI circuit units contains a switching signal or a high-frequency signal, each of the EMI circuit units is divided into sub-unit circuits, and each of the EMI circuit units is divided into a plurality of measured EMI circuits. Subunit.
  • the television is divided into modules according to whether the switching power supply circuit or the high-frequency signal circuit is included.
  • the television 10 is divided into the following EMI modules: the power board 11 and the movement.
  • the board 12 and the liquid crystal display 13, that is, the power board 11, the core board 12, and the liquid crystal display 13 of the television are circuit modules capable of generating EMI radiation.
  • the power board 11, the core board 12 and the liquid crystal display 13 of the television are also referred to as the first level in the television capable of generating EMI radiation interference sources.
  • the key to dividing the level is to see if the module contains The switching power supply circuit or the high-frequency signal circuit part cannot be divided into the first level if it does not include the switching power supply circuit or the high-frequency signal circuit part.
  • the backlight module of a television has a switching current signal (a signal capable of generating EMI radiation) when working, but the backlight module of the television cannot be divided into the above first level because the backlight module of the television
  • the switch signal is provided by the power board. When the power board turns off the backlight signal, the backlight module no longer has a switch current signal.
  • each of the EMI modules is separately divided into circuit units, and each of the EMI modules is divided into a plurality of EMI circuit units, that is, according to each Whether the EMI module contains a switching signal or a high frequency signal when operating, divides each EMI module in the first level of the television into several EMI circuit units. For example, referring to FIG.
  • the present embodiment divides the movement board 12 of the television into the following EMI circuit unit according to whether the movement board 12 (first level) of the television set contains a switching signal or a high frequency signal: the power amplifier circuit
  • the power amplifier circuit unit 121, the network port circuit unit 122, the tuner circuit unit 123, the decoding circuit unit 124, the SOC circuit unit 125, and the power supply circuit unit 126 in the core board 12 are also referred to as televisions.
  • a second level of EMI radiation interference sources can be generated in the machine.
  • the key to the division of the second level is to see whether the circuit contains a switching signal or a high-frequency signal.
  • the specific circuit structure needs to be specifically divided. For example, some SOC circuits have integrated network port circuits, then the network port circuit does not need to be divided.
  • the second level is to see whether the circuit contains a switching signal or a high-frequency signal.
  • each of the EMI circuit units is divided into sub-unit circuits, and each of the EMI circuit units is divided into a plurality of EMI circuits to be tested.
  • the unit that is, according to whether each of the EMI circuit units operates with a switching signal or a high frequency signal, each EMI circuit unit in the second level of the television set is divided into a plurality of EMI circuit subunits to be tested.
  • the present embodiment adjusts the movement of the television according to whether the SOC circuit unit 125 (second level) in the movement board 12 (first level) of the television set contains a switching signal or a high frequency signal.
  • the SOC circuit unit 125 in the board 12 is divided into the following EMI circuit subunits to be tested: a DDR control circuit subunit 1251, a signal input circuit subunit 1252, a signal output circuit subunit 1253, an audio processing circuit subunit 1254, and a video processing circuit. Unit 1255.
  • the DDR control circuit sub-unit 1251, the signal input circuit sub-unit 1252, the signal output circuit sub-unit 1253, the audio processing circuit sub-unit 1254, and the video processing circuit sub-unit 1255 in the SOC circuit 125 are also referred to as televisions.
  • the third level of the machine is capable of generating sources of EMI radiation interference.
  • the third level of division is also to see whether the circuit contains a switching signal or a high frequency signal.
  • the above-mentioned division of the module level of the television set may be divided according to actual needs, and in other embodiments, it may be further divided into more levels.
  • the EMI positioning method of the television set of the present invention is described in detail by dividing the television set into the first level, the second level, and the third level (ie, three levels).
  • the EMI positioning method of the TV set of the present embodiment utilizes the powerful processing and control capability of the TV main chip SOC, and adopts a multi-level modular positioning test method to quickly locate the EMI interference source, that is, by dividing the TV into as many levels as possible.
  • the first level represents several large EMI modules of the TV set. These large EMI modules constitute the possible radiation sources in the entire TV system.
  • the second level is to subdivide the EMI modules in the first level.
  • the third level is to subdivide the EMI circuit cells in the second level into several smaller EMI circuit sub-units.
  • the EMI positioning method of the television set of the embodiment divides the module circuit of the television into the first level, the second level, and the third level, and after receiving the preset EMI test command, the measured EMI of the television
  • the operating state, working module or operating frequency of the circuit subunit ie, the EMI circuit subunit in the third level above
  • the EMI detector is obtained for each EMI circuit subunit under different working states, different working modules or
  • the EMI positioning method of the television set of the embodiment adopts a multi-level modular positioning test method to achieve the purpose of quickly and accurately locating the EMI interference source, so that the EMI positioning method of the television set of the embodiment has high EMI positioning efficiency and accurate EMI positioning.
  • the EMI positioning method of the television set of the present embodiment corresponds to the EMI positioning method in the prior art, the EMI positioning time is greatly shortened, thereby greatly reducing the labor cost.
  • the foregoing step S10 includes:
  • Step S11 when a preset EMI test command is received, calling and displaying a preset EMI test UI interface;
  • the EMI test UI interface includes each of the EMI modules of the television, corresponding to each of the EMI modules An EMI circuit unit and a measured EMI circuit subunit corresponding to each EMI circuit unit;
  • Step S12 when receiving the EMI module selection instruction, calling and displaying each EMI circuit unit corresponding to the selected EMI module;
  • Step S13 when receiving the EMI circuit unit selection instruction, calling and displaying each EMI circuit sub-unit corresponding to the selected EMI circuit unit;
  • Step S14 when receiving the EMI circuit subunit selection command, control the working state, the working circuit unit or the operating frequency of the selected EMI circuit subunit to be tested.
  • the subsequent EMI module selection instruction after the preset EMI test UI interface is invoked and displayed, the subsequent EMI module selection instruction, the EMI circuit unit selection instruction And the input of the EMI circuit subunit selection command can be input through the corresponding button in the orientation selection button on the TV remote control and the OK confirmation button.
  • an EMI positioning test sequence for each of the EMI modules an EMI positioning test sequence for the EMI circuit unit corresponding to each of the EMI modules, and a pair of EMI circuit units
  • the corresponding EMI positioning test sequence of the tested EMI circuit sub-units can be blindly image-based, and the positioning is eliminated one by one.
  • the tester can also select the EMI with the highest probability of EMI interference sources based on his own industry experience.
  • the module, the EMI circuit unit, and the EMI circuit subunit under test are prioritized for EMI testing.
  • the EMI positioning method of the television set of the embodiment is described in detail by taking the EMI positioning test of the movement board of the television as an example:
  • the EMI positioning method of the television set of the embodiment calls and displays a preset EMI test UI interface when receiving a preset EMI test command; and then receives an EMI module selection instruction (the selected test object thereof)
  • a preset EMI test UI interface when receiving a preset EMI test command
  • an EMI module selection instruction (the selected test object thereof)
  • each EMI circuit unit corresponding to the selected movement board is called and displayed, including a power amplifier circuit unit, a network port circuit unit, a tuner circuit unit, a decoding circuit unit, and an SOC.
  • a circuit unit and a power supply circuit unit then, receiving an EMI circuit unit selection instruction (if the test object selected by the instruction is in the movement board) SOC circuit), calling and displaying each EMI circuit subunit corresponding to the selected SOC circuit unit, including a DDR control circuit subunit, a signal input circuit subunit, a signal output circuit subunit, an audio processing circuit subunit, and a video processing circuit subunit; then, receiving an EMI circuit subunit selection instruction (if the test object selected by the instruction is an audio processing circuit subunit in the SOC circuit, ie, the EMI circuit subunit under test is the audio processing In the circuit subunit, the operating state, the working circuit unit or the operating frequency of the selected audio processing circuit subunit are controlled, and then the audio processing circuit subunit is operated in different working states according to the EMI detector.
  • the change in the EMI radiation value ie, the EMI radiation frequency value and the EMI radiation amplitude value
  • the audio processing circuit sub-unit is an EMI interference source circuit sub-unit of the television set.
  • controlling the audio processing circuit sub-unit ie, the EMI circuit sub-unit under test
  • the audio processing circuit sub-unit to change from an active state to an inactive state (ie, the operating state of the audio processing circuit sub-unit has changed)
  • the analysis is changing.
  • the audio processing circuit subunit is a television set.
  • An EMI interference source circuit subunit ie, an EMI interference source of the television set, can be positioned on the audio processing circuit subunit; Subunit processing circuit does not operate, the value of EMI radiation acquired, it is determined that the audio processing circuitry subunit than the EMI source circuit unit.
  • the audio processing circuit subunit may also be determined whether the EMI interference source of the television is in the audio processing circuit. On the unit. Specifically, when the audio processing circuit subunit operates, after changing its working mode or changing its operating frequency, if the obtained radiation frequency value changes or the acquired radiation amplitude value changes, it is determined that the The audio processing circuit subunit is an EMI interference source circuit unit; when the audio processing circuit subunit operates, after changing its working mode or changing its operating frequency, if the obtained EMI radiation frequency value and the EMI radiation amplitude value do not occur If it is changed, it is judged that the audio processing circuit subunit is not an EMI interference source circuit unit.
  • the EMI positioning method of the television set of the embodiment controls the working state, the working circuit unit or the operating frequency of the selected EMI circuit subunit when receiving the EMI circuit subunit selection command, and then according to the EMI detector Determining whether the measured EMI circuit subunit is an EMI interference source circuit of the television set when the measured EMI circuit subunit changes in the EMI radiation value detected by different working states, different working modules or different operating frequencies Subunit.
  • the EMI positioning method of the television set of this embodiment has the advantages of high EMI positioning efficiency and strong EMI positioning accuracy.
  • the present invention also provides an EMI positioning apparatus for a television set.
  • the EMI positioning apparatus 100 of the television set provided by the present invention includes a control module 101, an EMI radiation value acquisition module 102, and an analysis module 103.
  • the control module 101 is configured to control, when receiving a preset EMI test command, an operating state, a working module, or an operating frequency of each tested EMI circuit subunit of the television;
  • the EMI positioning device of the television set provided by the embodiment of the invention is mainly used in the EMI positioning test system of the television set, and is used for accurately and quickly locating the EMI interference source of the television set, thereby quickly and effectively finding corresponding measures to improve the EMI radiation of the television set.
  • the value of the TV product meets the EMI requirements of the sales territory.
  • the EMI positioning apparatus of the television set provided by the embodiment of the present invention is first, when the control module 101 receives a preset EMI test command, the working state of each EMI circuit subunit of the television, The working module or operating frequency is controlled.
  • the preset EMI test command may be an EMI test command issued by a TV remote controller, for example, an EMI test dedicated button is added to a remote controller of the television, and the tester presses the button.
  • the EMI test dedicated button is used to issue the preset EMI test command, and the television triggers the television to enter the EMI test workflow when receiving the EMI test command issued by the remote controller; in another embodiment, the tester
  • the purpose of inputting the preset EMI test command may also be achieved by pressing a combination of a plurality of digital keys, a plurality of alphabetic keys, or a plurality of numeric keys plus a plurality of alphabetic keys on the remote control of the television, that is, equivalent to passing the remote controller. Entering the preset EMI test password triggers the TV to enter the EMI test.
  • an EMI test dedicated button is added to the remote controller of the television, and the user presses the EMI test dedicated button to trigger the television to enter the EMI test work as an example to perform the EMI positioning device of the television set of the present invention.
  • the EMI positioning device of the television set provided by the embodiment, the control module 101, when receiving the preset EMI test command issued by the user by pressing an EMI test dedicated button added on the remote controller, to the television set
  • the operating state, working module or operating frequency of each EMI circuit subunit under test is controlled.
  • the EMI radiation value acquisition module 102 is configured to acquire an EMI radiation value detected by the EMI detector for each EMI circuit subunit under different working states, different working modules or different operating frequencies, where the EMI radiation value includes EMI radiation frequency value and EMI radiation amplitude value;
  • the analyzing module 103 is configured to analyze and determine an EMI interference source circuit sub-unit according to the obtained EMI radiation value.
  • the control module 101 controls each of the television sets. Measure the operating state of the EMI circuit subunit, the control of the working module or the operating frequency, and then pass The EMI detector detects EMI radiation values (including EMI radiation frequency values and EMI radiation amplitude values) of the tested EMI circuit subunits under different operating states, different working modules, or different operating frequencies, and then the EMI radiation value acquiring module 102 Obtaining an EMI radiation frequency value and an EMI radiation amplitude value detected by the EMI detector for each tested EMI circuit subunit under different working states, different working modules or different operating frequencies, and the analyzing module 103 is configured according to the EMI radiation value.
  • EMI radiation values including EMI radiation frequency values and EMI radiation amplitude values
  • the EMI radiation frequency value and the EMI radiation amplitude value acquired by the module 102 are obtained, and the EMI interference source circuit sub-unit is analyzed and determined, thereby realizing the positioning of the EMI interference source of the television.
  • the analysis module 103 analyzes the change of the EMI radiation value of each EMI circuit subunit under different working states, different working modules or different operating frequencies to determine the specific EMI interference source of the television. Which circuit subunit of the TV is on.
  • the control module 101 controls the EMI circuit subunit to be tested to change from the operating state to the inactive state (ie, the operating state of the EMI circuit subunit under test is changed), and the analyzing module 103 analyzes the EMI circuit under test.
  • the EMI circuit subunit to be tested is not an EMI interference source circuit subunit of the television, that is, the EMI interference source of the television is not on the EMI circuit subunit to be tested, that is, the EMI positioning device of the television of this embodiment
  • the analyzing module 103 is further configured to: when the working state of the EMI circuit subunit to be tested is changed, if the obtained EMI radiation frequency value and the EMI radiation amplitude value do not change, determine the measured The EMI circuit subunit is not an EMI interference source circuit unit; conversely, if the EMI radiation frequency value detected by the EMI detector changes after changing the operating state of the EMI circuit subunit under test Or the detected EMI radiation amplitude value changes, it may be determined that the measured
  • the EMI interference source circuit sub-unit of the television can also be determined.
  • the analysis module 103 in the EMI positioning device of the television set of the embodiment is further configured to: when the EMI circuit subunit is operated, change its working mode or change its working frequency, if the obtained radiation frequency value If the change or the obtained radiation amplitude value changes, it is determined that the EMI circuit subunit to be tested is an EMI interference source circuit unit; the analysis module 103 in the EMI positioning device of the television set of the embodiment is further used for When the EMI circuit subunit under test is changed, after changing its working mode or changing its operating frequency, if the obtained EMI radiation frequency value and the EMI radiation amplitude value are not changed, the EMI circuit to be tested is judged.
  • the subunit is not an EMI interference source circuit unit.
  • the EMI positioning device of the television set provided by the embodiment when the control module 101 receives the preset EMI test command, performs the working state, the working module or the working frequency of each EMI circuit subunit of the television. Controlling the EMI radiation value obtained by the EMI detector for each EMI circuit subunit under different operating states, different working modules or different operating frequencies; finally, the analyzing module 103 Based on the obtained EMI radiation value, the EMI interference source circuit sub-unit is determined by analysis.
  • the EMI positioning device of the television set provided by the embodiment has the advantages of high EMI positioning efficiency, high EMI positioning accuracy, and low testing cost.
  • the EMI positioning apparatus 100 of the television set further includes a first division.
  • the first dividing module 104 is configured to divide a television into modules according to whether a switching power supply circuit or a high-frequency signal circuit is included, and divide the television into a plurality of EMI modules;
  • the second dividing module 105 is configured to divide each of the EMI modules into circuit units according to whether each of the EMI modules includes a switching signal or a high frequency signal, and divide each of the EMI modules into a plurality of EMIs. Circuit unit
  • the third dividing module 106 is configured to divide each of the EMI circuit units into sub-unit circuits according to whether each of the EMI circuit units includes a switching signal or a high-frequency signal, and each of the EMI circuit units respectively Divided into a number of EMI circuit subunits under test.
  • the first dividing module 104 performs module partitioning on the television according to whether the switching power supply circuit or the high-frequency signal circuit is included.
  • the first dividing module 104 The television set 10 is divided into the following EMI modules: a power board 11, a core board 12, and a liquid crystal display 13, that is, a power board 11, a core board 12, and a liquid crystal display 13 of the television are circuit modules capable of generating EMI radiation.
  • the power board 11, the core board 12 and the liquid crystal display 13 of the television are also referred to as the first level in the television capable of generating EMI radiation interference sources.
  • the key to dividing the level is to see if the module contains The switching power supply circuit or the high-frequency signal circuit part cannot be divided into the first level if it does not include the switching power supply circuit or the high-frequency signal circuit part.
  • the backlight module of a television has a switching current signal (a signal capable of generating EMI radiation) when working, but the backlight module of the television cannot be divided into the above first level because the backlight module of the television
  • the switch signal is provided by the power board. When the power board turns off the backlight signal, the backlight module no longer has a switch current signal.
  • the second dividing module 105 divides each of the EMI modules into circuit units according to whether each of the EMI modules contains a switching signal or a high-frequency signal, and divides each of the EMI modules into a plurality of EMIs.
  • the circuit unit divides each EMI module in the first level of the television set into a plurality of EMI circuit units according to whether each of the EMI modules operates with a switching signal or a high frequency signal.
  • the second dividing module 105 according to whether the movement board 12 (first level) of the television sets contains a switching signal or a high frequency signal, and the movement board 12 of the television set is used.
  • EMI circuit units a power amplifier circuit unit 121, a network port circuit unit 122, a tuner circuit unit 123, a decoding circuit unit 124, a SOC circuit unit 125, and a power supply circuit unit 126.
  • the power amplifier circuit unit 121, the network port circuit unit 122, the tuner circuit unit 123, the decoding circuit unit 124, the SOC circuit unit 125, and the power supply circuit unit 126 in the core board 12 are also referred to as televisions.
  • a second level of EMI radiation interference sources can be generated in the machine. The key to the division of the second level is to see whether the circuit contains a switching signal or a high-frequency signal.
  • the specific circuit structure needs to be specifically divided. For example, some SOC circuits have integrated network port circuits, then the network port circuit does not need to be divided. The second level.
  • the third dividing module 106 divides each of the EMI circuit units into sub-unit circuits according to whether each EMI circuit unit operates with a switching signal or a high-frequency signal, and divides each of the EMI circuit units For each of the EMI circuit subunits to be tested, that is, according to whether each of the EMI circuit units operates with a switching signal or a high frequency signal, each EMI circuit unit in the second level of the television set is divided into a plurality of EMI circuits to be tested. Subunit.
  • the third dividing module 106 includes a switching signal or a high value according to the SOC circuit unit 125 (second level) in the movement board 12 (first level) of the television set.
  • the frequency signal divides the SOC circuit unit 125 in the movement board 12 of the television into the following EMI circuit subunits to be tested: DDR control circuit sub-unit 1251, signal input circuit sub-unit 1252, signal output circuit sub-unit 1253, audio processing Circuit subunit 1254 and video processing circuit subunit 1255.
  • DDR control circuit sub-unit 1251, the signal input circuit sub-unit 1252, the signal output circuit sub-unit 1253, the audio processing circuit sub-unit 1254, and the video processing circuit sub-unit 1255 in the SOC circuit 125 are also referred to as televisions.
  • the third level of the machine is capable of generating sources of EMI radiation interference.
  • the third level of division is also to see whether the circuit contains a switching signal or a high frequency signal.
  • the above-mentioned division of the module level of the television set may be divided according to actual needs, and in other embodiments, it may be further divided into more levels.
  • the EMI positioning device of the television set of the present invention is described in detail by dividing the television set into the first level, the second level, and the third level (ie, three levels).
  • the EMI positioning device of the TV set of the present embodiment utilizes the powerful processing and control capability of the TV main chip SOC, and adopts a multi-level modular positioning test device to quickly locate the EMI interference source, that is, by dividing the TV into as many levels as possible.
  • the first level represents several large EMI modules of the TV set. These large EMI modules constitute the possible radiation sources in the entire TV system.
  • the second level is to subdivide the EMI modules in the first level.
  • the third level is to subdivide the EMI circuit cells in the second level into several smaller EMI circuit sub-units.
  • the EMI positioning device of the television set of the embodiment divides the module circuit of the television into the first level, the second level and the third level, and after receiving the preset EMI test command, the measured EMI of the television
  • the operating state, working module or operating frequency of the circuit subunit ie, the EMI circuit subunit in the third level above
  • the EMI detector is obtained for each EMI circuit subunit under different working states, different working modules or
  • the EMI positioning device of the television set of the embodiment adopts a multi-level modular positioning test device to achieve the purpose of quickly and accurately locating the EMI interference source, so that the EMI positioning device of the television set of the embodiment has high EMI positioning efficiency and accurate EMI positioning. At the same time, since the EMI positioning device of the television set of the embodiment greatly shortens the EMI positioning time, the labor cost is greatly reduced.
  • the control module 101 includes a UI interface calling unit 1011 and a control unit 1012. .
  • the UI interface invoking unit 1011 is configured to invoke and display a preset EMI test UI interface when receiving a preset EMI test command, where the EMI test UI interface includes each of the EMI modules of the television set, An EMI circuit unit corresponding to each of the EMI modules and a measured EMI circuit sub-unit corresponding to each EMI circuit unit; when receiving an EMI module selection command, calling and displaying each EMI corresponding to the selected EMI module a circuit unit; upon receiving an EMI circuit unit selection instruction, calling and displaying each EMI circuit subunit corresponding to the selected EMI circuit unit;
  • the control unit 1012 is configured to control an operating state, a working circuit unit, or an operating frequency of the selected EMI circuit subunit when receiving the EMI circuit subunit selection instruction.
  • the UI interface invoking unit 1011 invokes and displays the preset EMI test UI interface, and the subsequent EMI module selection instruction
  • the input of the EMI circuit unit selection command and the EMI circuit subunit selection command may be input through a corresponding button of the orientation selection button on the television remote controller and an OK confirmation button.
  • an EMI positioning test sequence for each of the EMI modules, an EMI positioning test sequence for the EMI circuit unit corresponding to each of the EMI modules, and a pair of EMI circuit units The corresponding EMI positioning test sequence of the tested EMI circuit sub-units can be blindly image-based, and the positioning is eliminated one by one.
  • the tester can also select the EMI with the highest probability of EMI interference sources based on his own industry experience.
  • the module, the EMI circuit unit, and the EMI circuit subunit under test are prioritized for EMI testing.
  • the EMI positioning device of the television set of the embodiment is described in detail by taking the EMI positioning test of the movement board of the television as an example:
  • the UI interface invoking unit 1011 calls and displays a preset EMI test UI interface when receiving the preset EMI test instruction; then, the UI interface calling unit When receiving the EMI module selection instruction (the selected test object is the movement board of the television), the 1011 calls and displays each EMI circuit unit corresponding to the selected movement board, including the power amplifier circuit unit and the network port.
  • the UI interface invoking unit 1011 receives an EMI circuit unit selection instruction (if the test object selected by the instruction is the machine) In the core board SOC circuit), calling and displaying each EMI circuit subunit corresponding to the selected SOC circuit unit, including a DDR control circuit subunit, a signal input circuit subunit, a signal output circuit subunit, an audio processing circuit subunit, and a video processing circuit subunit; then, the UI interface invoking unit 1011 receives an EMI circuit subunit selection instruction (if the test object selected by the instruction is an audio processing circuit subunit in the SOC circuit, that is, the measured EMI circuit
  • the control unit 1012 controls the operating state, the working circuit unit or the operating frequency of the selected audio processing circuit subunit, and then according to the EMI detector
  • the audio processing circuit subunit unit analyzes and determines the EMI radiation value (if the test object selected by the instruction is the machine) In the core board SOC circuit), calling and displaying each EMI circuit subunit corresponding to the selected SOC circuit unit, including a
  • the control unit 1012 controls the audio processing circuit sub-unit (ie, the EMI circuit sub-unit under test) to change from an active state to an inactive state (ie, the operating state of the audio processing circuit sub-unit has changed. And analyzing whether the EMI radiation frequency value and the EMI radiation amplitude value detected by the EMI detector are found to change when the operating state of the audio processing circuit subunit is changed, if the EMI radiation frequency value detected by the EMI detector And the EMI radiation amplitude value does not change, it can be determined that the audio processing circuit subunit is not the EMI interference source circuit subunit of the television, that is, the EMI interference source of the television is not on the audio processing circuit subunit; If after the control unit 1012 changes the operating state of the audio processing circuit subunit, if the EMI radiation frequency value detected by the EMI detector changes or the detected EMI radiation amplitude value changes, it may be determined
  • the audio processing circuit subunit is a EMI interference source circuit subunit of the television, that is, the EMI interference
  • the audio processing circuit subunit may also be determined whether the EMI interference source of the television is in the audio processing circuit. On the unit. Specifically, when the audio processing circuit subunit operates, after changing its working mode or changing its operating frequency, if the obtained radiation frequency value changes or the acquired radiation amplitude value changes, it is determined that the The audio processing circuit subunit is an EMI interference source circuit unit; when the audio processing circuit subunit operates, after changing its working mode or changing its operating frequency, if the obtained EMI radiation frequency value and the EMI radiation amplitude value do not occur If it is changed, it is judged that the audio processing circuit subunit is not an EMI interference source circuit unit.
  • the control unit 1012 controls the working state, the working circuit unit or the operating frequency of the selected EMI circuit subunit when receiving the EMI circuit subunit selection command, and then according to
  • the EMI detector analyzes whether the measured EMI circuit subunit is a TV set according to a change of the EMI radiation value detected by the EMI circuit subunit under different operating states, different working modules or different operating frequencies.
  • EMI interference source circuit subunit The EMI positioning device of the television set of this embodiment has the advantages of high EMI positioning efficiency and strong EMI positioning accuracy.

Abstract

Disclosed in the present invention are an electro magnetic interference (EMI) positioning method and device for a television. The EMI positioning method for a television comprises the following steps: when a preset EMI test instruction is received, controlling the operating state, operating module or operating frequency of each tested EMI circuit subunit of a television; acquiring EMI radiation values of each tested EMI circuit subunit in a different operating state, with respect to a different operating module or at a different operating frequency, detected by an EMI detector; the EMI radiation values comprising an EMI radiation frequency value and an EMI radiation amplitude value; according to the acquired EMI radiation values, analyzing to determine an EMI source circuit subunit. The EMI positioning method for a television in the present invention improves EMI positioning efficiency and EMI positioning accuracy.

Description

电视机的EMI定位方法及装置  EMI positioning method and device for television
技术领域Technical field
本发明涉及通信技术领域,尤其涉及一种电视机的EMI定位方法及装置。The present invention relates to the field of communications technologies, and in particular, to an EMI positioning method and apparatus for a television set.
背景技术Background technique
电磁干扰,简称EMI(EMI,Electro Magnetic Interference,电磁干扰)是对人体或环境有害的信号,电器产品尤其是电视机通常需要通过对其做EMI测试来确认该产品是否能满足销售地域的EMI指标要求,当电视机不能满足销售地域的EMI指标要求时,电视机生产企业必须采取有效措施进行改善直至达到销售地域的EMI指标要求。现有技术中,改善电视机EMI的方法有很多,例如增加磁环、铝箔或泡棉等吸波材料,或者增加屏蔽措施,或者在电视机的相应电路上增加电容电感磁珠等元件过滤等。但是目前定位电视机的EMI干扰源的方法却不多,常用的方法是频谱仪分析法,而因其近场测试和实验室远场测试的差异并不能完整有效的捕捉到真实的辐射信号,从而导致该方法的适用范围受到限制;还有一种方法是采用EMI仿真软件进行仿真研究,但由于该方法需要建立模型,而建立模型较困难,并且该方法的定位准确性差,同时,高昂的软件成本也不太适合生产型企业;相比之下,目前最有效的EMI定位方法是在实验室远场测试条件下通过不断的试验来解决电视机的EMI定位问题,但是,该方法属于一种盲人摸象式的处理方式,造成效率低下,占用时间长,从而带来经济成本的增加。Electromagnetic interference, referred to as EMI (EMI, Electro Magnetic Interference (electromagnetic interference) is a signal that is harmful to the human body or the environment. Electrical products, especially TV sets, usually need to be tested by EMI to confirm whether the product can meet the EMI requirements of the sales territory. When the TV cannot meet the sales territory. When EMI indicators are required, TV manufacturers must take effective measures to improve them until they reach the EMI requirements for the sales territory. In the prior art, there are many methods for improving the EMI of a television set, such as adding a absorbing material such as a magnetic ring, an aluminum foil or a foam, or adding shielding measures, or adding a component such as a capacitor, a magnetic bead, or the like to a corresponding circuit of the television. . However, there are not many methods for locating the EMI interference source of the TV set. The commonly used method is the spectrum analyzer analysis method, and the difference between the near field test and the laboratory far field test cannot completely and effectively capture the true radiation signal. As a result, the scope of application of the method is limited; another method is to use EMI simulation software for simulation research, but because the method needs to establish a model, it is difficult to establish the model, and the positioning accuracy of the method is poor, and at the same time, the high software The cost is also not suitable for production enterprises; in contrast, the most effective EMI positioning method is to solve the EMI positioning problem of TV sets through continuous testing under laboratory far field test conditions, but this method belongs to The blind person's image-like approach results in inefficiency and long occupation time, which leads to an increase in economic costs.
发明内容Summary of the invention
本发明的主要目的在于提供一种电视机的EMI定位方法,旨在提高EMI定位效率和提高EMI定位准确性。The main object of the present invention is to provide an EMI positioning method for a television set, which aims to improve EMI positioning efficiency and improve EMI positioning accuracy.
为了实现上述目的,本发明提供一种电视机的EMI定位方法,所述电视机的EMI定位方法包括以下步骤:In order to achieve the above object, the present invention provides an EMI positioning method for a television set, and the EMI positioning method of the television set includes the following steps:
在接收到预设的EMI测试指令时,对电视机的各被测EMI电路子单元的工作状态、工作模块或工作频率进行控制;When receiving the preset EMI test command, controlling the working state, working module or working frequency of each measured EMI circuit subunit of the television;
获取EMI检测仪对各被测EMI电路子单元在不同工作状态、不同工作模块或不同工作频率时所检测到的EMI辐射值,所述EMI辐射值包括EMI辐射频率值和EMI辐射幅度值;Obtaining an EMI radiation value detected by the EMI detector for each EMI circuit subunit under different working states, different working modules or different operating frequencies, the EMI radiation value including an EMI radiation frequency value and an EMI radiation amplitude value;
根据获取到的EMI辐射值,分析确定EMI干扰源电路子单元。Based on the obtained EMI radiation value, the EMI interference source circuit sub-unit is determined by analysis.
优选地,在接收到预设的EMI测试指令时,对电视机的各被测EMI电路子单元的工作状态、工作模块或工作频率进行控制之前还包括:Preferably, before receiving the preset EMI test command, before controlling the working state, the working module or the working frequency of each tested EMI circuit subunit of the television set, the method further includes:
根据是否包含开关电源电路或高频信号电路,对电视机进行模块划分,将电视机划分为若干EMI模块;According to whether the switching power supply circuit or the high-frequency signal circuit is included, the television is divided into modules, and the television is divided into several EMI modules;
根据各所述EMI模块工作时是否含有开关信号或高频信号,将各所述EMI模块分别进行电路单元划分,将各所述EMI模块分别划分为若干EMI电路单元;According to whether each of the EMI modules contains a switching signal or a high-frequency signal, each of the EMI modules is separately divided into circuit units, and each of the EMI modules is divided into a plurality of EMI circuit units;
根据各所述EMI电路单元工作时是否含有开关信号或高频信号,将各所述EMI电路单元分别进行子单元电路划分,将各所述EMI电路单元分别划分为若干被测EMI电路子单元。Each of the EMI circuit units is divided into sub-unit circuits according to whether each of the EMI circuit units includes a switching signal or a high-frequency signal, and each of the EMI circuit units is divided into a plurality of EMI circuit sub-units to be tested.
优选地,在接收到预设的EMI测试指令时,对电视机的各被测EMI电路子单元的工作状态、工作模块或工作频率进行控制包括:Preferably, when receiving the preset EMI test command, controlling the working state, the working module or the operating frequency of each tested EMI circuit subunit of the television set includes:
在接收到预设的EMI测试指令时,调用并显示预设的EMI测试UI界面;所述EMI测试UI界面包含电视机的各所述EMI模块、与各所述EMI模块相对应的EMI电路单元以及与各EMI电路单元相对应的被测EMI电路子单元;Resetting and displaying a preset EMI test UI interface when receiving a preset EMI test command; the EMI test UI interface includes each of the EMI modules of the television set, and an EMI circuit unit corresponding to each of the EMI modules And a measured EMI circuit subunit corresponding to each EMI circuit unit;
在接收到EMI模块选择指令时,调用并显示与选择的EMI模块相对应的各EMI电路单元;When receiving the EMI module selection instruction, calling and displaying each EMI circuit unit corresponding to the selected EMI module;
在接收到EMI电路单元选择指令时,调用并显示与选择的EMI电路单元相对应的各EMI电路子单元;Retrieving and displaying each EMI circuit sub-unit corresponding to the selected EMI circuit unit upon receiving the EMI circuit unit selection instruction;
在接收到EMI电路子单元选择指令时,对选择的被测EMI电路子单元的工作状态、工作电路单元或工作频率进行控制。When the EMI circuit subunit selection command is received, the operating state, the working circuit unit, or the operating frequency of the selected EMI circuit subunit is controlled.
优选地,所述根据获取到的EMI辐射值,分析确定EMI干扰源电路子单元包括:Preferably, the analyzing and determining the EMI interference source circuit subunit according to the obtained EMI radiation value comprises:
当改变所述被测EMI电路子单元的工作状态时,若获取到的EMI辐射频率值发生了变化或获取到的EMI辐射幅度值发生了变化,则判断所述被测EMI电路子单元是EMI干扰源电路单元;When the operating state of the EMI circuit subunit to be tested is changed, if the obtained EMI radiation frequency value changes or the acquired EMI radiation amplitude value changes, it is determined that the measured EMI circuit subunit is EMI Interference source circuit unit;
当改变所述被测EMI电路子单元的工作状态时,若获取到的EMI辐射频率值和EMI辐射幅度值均未发生变化,则判断所述被测EMI电路子单元不是EMI干扰源电路单元。When the operating state of the EMI circuit subunit to be tested is changed, if the obtained EMI radiation frequency value and the EMI radiation amplitude value are not changed, it is determined that the EMI circuit subunit to be tested is not an EMI interference source circuit unit.
优选地,所述根据获取到的EMI辐射值,分析确定EMI干扰源电路子单元还包括:Preferably, the analyzing and determining the EMI interference source circuit sub-unit according to the obtained EMI radiation value further includes:
当所述被测EMI电路子单元工作时,改变其工作模式或改变其工作频率后,若获取到的辐射频率值发生了变化或获取到的辐射幅度值发生了变化,则判断所述被测EMI电路子单元是EMI干扰源电路单元;When the EMI circuit subunit under test is changed, after changing its working mode or changing its operating frequency, if the obtained radiation frequency value changes or the acquired radiation amplitude value changes, the measured value is determined. The EMI circuit subunit is an EMI interference source circuit unit;
当所述被测EMI电路子单元工作时,改变其工作模式或改变其工作频率后,若获取到的EMI辐射频率值和EMI辐射幅度值均未发生变化,则判断所述被测EMI电路子单元不是EMI干扰源电路单元;When the EMI circuit subunit under test is changed, after changing its working mode or changing its operating frequency, if the obtained EMI radiation frequency value and the EMI radiation amplitude value are not changed, the EMI circuit to be tested is judged. The unit is not an EMI interference source circuit unit;
当所述被测EMI电路子单元不工作时,获取到EMI辐射值,则判断所述被测EMI电路子单元不是EMI干扰源电路单元。When the EMI radiation sub-unit is not in operation, the EMI radiation value is obtained, and then the EMI circuit sub-unit under test is determined not to be an EMI interference source circuit unit.
此外,为实现上述目的,本发明还提供一种电视机的EMI定位装置,所述电视机的EMI定位装置包括:In addition, in order to achieve the above object, the present invention also provides an EMI positioning device for a television set, where the EMI positioning device of the television set includes:
控制模块:用于在接收到预设的EMI测试指令时,对电视机的各被测EMI电路子单元的工作状态、工作模块或工作频率进行控制;Control module: for controlling the working state, working module or working frequency of each EMI circuit sub-unit of the television when receiving the preset EMI test command;
EMI辐射值获取模块:用于获取EMI检测仪对各被测EMI电路子单元在不同工作状态、不同工作模块或不同工作频率时所检测到的EMI辐射值,所述EMI辐射值包括EMI辐射频率值和EMI辐射幅度值;EMI radiation value acquisition module: used to obtain the EMI radiation value detected by the EMI detector for each EMI circuit subunit under different working states, different working modules or different operating frequencies, the EMI radiation value including the EMI radiation frequency Value and EMI radiation amplitude value;
分析模块:用于根据获取到的EMI辐射值,分析确定EMI干扰源电路子单元。The analysis module is configured to analyze and determine the EMI interference source circuit sub-unit according to the obtained EMI radiation value.
优选地,所述的电视机的EMI定位装置还包括:Preferably, the EMI positioning device of the television set further comprises:
第一划分模块:用于根据是否包含开关电源电路或高频信号电路,对电视机进行模块划分,将电视机划分为若干EMI模块;The first dividing module is configured to perform module division on the television according to whether the switching power supply circuit or the high-frequency signal circuit is included, and divide the television into a plurality of EMI modules;
第二划分模块:用于根据各所述EMI模块工作时是否含有开关信号或高频信号,将各所述EMI模块分别进行电路单元划分,将各所述EMI模块分别划分为若干EMI电路单元;a second dividing module: configured to divide each of the EMI modules into circuit units according to whether each of the EMI modules includes a switching signal or a high-frequency signal, and divide each of the EMI modules into a plurality of EMI circuit units;
第三划分模块:用于根据各所述EMI电路单元工作时是否含有开关信号或高频信号,将各所述EMI电路单元分别进行子单元电路划分,将各所述EMI电路单元分别划分为若干被测EMI电路子单元。a third dividing module: configured to divide each of the EMI circuit units into sub-unit circuits according to whether each of the EMI circuit units includes a switching signal or a high-frequency signal, and divide each of the EMI circuit units into a plurality of EMI circuit subunit to be tested.
优选地,所述控制模块包括:Preferably, the control module comprises:
UI界面调用单元:用于在接收到预设的EMI测试指令时,调用并显示预设的EMI测试UI界面;所述EMI测试UI界面包含电视机的各所述EMI模块、与各所述EMI模块相对应的EMI电路单元以及与各EMI电路单元相对应的被测EMI电路子单元;在接收到EMI模块选择指令时,调用并显示与选择的EMI模块相对应的各EMI电路单元;在接收到EMI电路单元选择指令时,调用并显示与选择的EMI电路单元相对应的各EMI电路子单元;The UI interface calling unit is configured to: call and display a preset EMI test UI interface when receiving the preset EMI test command; the EMI test UI interface includes each of the EMI modules of the television, and each of the EMI The EMI circuit unit corresponding to the module and the EMI circuit subunit corresponding to each EMI circuit unit; when receiving the EMI module selection instruction, calling and displaying each EMI circuit unit corresponding to the selected EMI module; Retrieving and displaying each EMI circuit sub-unit corresponding to the selected EMI circuit unit when the EMI circuit unit selects an instruction;
控制单元:在接收到EMI电路子单元选择指令时,对选择的被测EMI电路子单元的工作状态、工作电路单元或工作频率进行控制。The control unit controls the working state, the working circuit unit or the operating frequency of the selected EMI circuit subunit when receiving the EMI circuit subunit selection command.
优选地,所述分析模块还用于:Preferably, the analysis module is further configured to:
当改变所述被测EMI电路子单元的工作状态时,若获取到的EMI辐射频率值发生了变化或获取到的EMI辐射幅度值发生了变化,则判断所述被测EMI电路子单元是EMI干扰源电路单元;When the operating state of the EMI circuit subunit to be tested is changed, if the obtained EMI radiation frequency value changes or the acquired EMI radiation amplitude value changes, it is determined that the measured EMI circuit subunit is EMI Interference source circuit unit;
当改变所述被测EMI电路子单元的工作状态时,若获取到的EMI辐射频率值和EMI辐射幅度值均未发生变化,则判断所述被测EMI电路子单元不是EMI干扰源电路单元。When the operating state of the EMI circuit subunit to be tested is changed, if the obtained EMI radiation frequency value and the EMI radiation amplitude value are not changed, it is determined that the EMI circuit subunit to be tested is not an EMI interference source circuit unit.
优选地,所述分析模块还用于:Preferably, the analysis module is further configured to:
当所述被测EMI电路子单元工作时,改变其工作模式或改变其工作频率后,若获取到的辐射频率值发生了变化或获取到的辐射幅度值发生了变化,则判断所述被测EMI电路子单元是EMI干扰源电路单元;When the EMI circuit subunit under test is changed, after changing its working mode or changing its operating frequency, if the obtained radiation frequency value changes or the acquired radiation amplitude value changes, the measured value is determined. The EMI circuit subunit is an EMI interference source circuit unit;
当所述被测EMI电路子单元工作时,改变其工作模式或改变其工作频率后,若获取到的EMI辐射频率值和EMI辐射幅度值均未发生变化,则判断所述被测EMI电路子单元不是EMI干扰源电路单元;When the EMI circuit subunit under test is changed, after changing its working mode or changing its operating frequency, if the obtained EMI radiation frequency value and the EMI radiation amplitude value are not changed, the EMI circuit to be tested is judged. The unit is not an EMI interference source circuit unit;
当所述被测EMI电路子单元不工作时,获取到EMI辐射值,则判断所述被测EMI电路子单元不是EMI干扰源电路单元。When the EMI radiation sub-unit is not in operation, the EMI radiation value is obtained, and then the EMI circuit sub-unit under test is determined not to be an EMI interference source circuit unit.
本发明提供一种电视机的EMI定位方法,该电视机的EMI定位方法包括以下步骤:在接收到预设的EMI测试指令时,对电视机的各被测EMI电路子单元的工作状态、工作模块或工作频率进行控制;获取EMI检测仪对各被测EMI电路子单元在不同工作状态、不同工作模块或不同工作频率时所检测到的EMI辐射值,所述EMI辐射值包括EMI辐射频率值和EMI辐射幅度值;根据获取到的EMI辐射值,分析确定EMI干扰源电路子单元。本发明电视机的EMI定位方法具有EMI定位效率高及EMI定位准确性高的优点。The invention provides an EMI positioning method for a television set. The EMI positioning method of the television set comprises the following steps: when receiving a preset EMI test command, working state and working on each measured EMI circuit subunit of the television set Controlling the module or operating frequency; obtaining the EMI radiation value detected by the EMI detector for each EMI circuit subunit under different operating states, different working modules or different operating frequencies, the EMI radiation value including the EMI radiation frequency value And EMI radiation amplitude value; according to the obtained EMI radiation value, the EMI interference source circuit sub-unit is determined by analysis. The EMI positioning method of the television set of the invention has the advantages of high EMI positioning efficiency and high EMI positioning accuracy.
附图说明DRAWINGS
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的前提下,还可以根据这些附图示出的结构获得其他的附图。In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and those skilled in the art can obtain other drawings according to the structures shown in the drawings without any creative work.
图1为本发明电视机的EMI定位方法第一实施例的流程示意图;1 is a schematic flow chart of a first embodiment of an EMI positioning method for a television set according to the present invention;
图2为本发明电视机的EMI定位方法第二实施例的流程示意图;2 is a schematic flow chart of a second embodiment of an EMI positioning method for a television set according to the present invention;
图3为本发明电视机的EMI定位方法第三实施例的流程示意图;3 is a schematic flow chart of a third embodiment of an EMI positioning method for a television set according to the present invention;
图4为本发明电视机的EMI定位装置第一实施例的功能模块示意图;4 is a schematic diagram of functional modules of a first embodiment of an EMI positioning apparatus for a television set according to the present invention;
图5为本发明电视机的EMI定位装置第二实施例的功能模块示意图;5 is a schematic diagram of functional modules of a second embodiment of an EMI positioning apparatus for a television set according to the present invention;
图6为本发明电视机的EMI定位装置第三实施例中控制模块的细化功能模块示意图;6 is a schematic diagram of a refinement function module of a control module in a third embodiment of an EMI positioning apparatus for a television set according to the present invention;
图7为本发明电视机的EMI定位方法中电视机的EMI模块第一实施例的结构示意图;7 is a schematic structural diagram of a first embodiment of an EMI module of a television set in an EMI positioning method of a television set according to the present invention;
图8为本发明电视机的EMI定位方法中电视机的EMI模块第二实施例中机芯板的电路单元的结构示意图;8 is a schematic structural diagram of a circuit unit of a movement board in a second embodiment of an EMI module of a television set in an EMI positioning method of a television set according to the present invention;
图9为本发明电视机的EMI定位方法中电视机的EMI模块第三实施例中机芯板中SOC电路单元的电路子单元的结构示意图。9 is a schematic structural diagram of a circuit subunit of a SOC circuit unit in a movement board in a third embodiment of an EMI module of a television set in an EMI positioning method of a television set according to the present invention.
本发明目的的实现、功能特点及优点将结合实施例,参照附图做进一步说明。The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments.
具体实施方式detailed description
应当理解,此处所描述的具体实施例仅仅用以解释本发明,并不用于限定本发明。It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
本发明提供一种电视机的EMI定位方法,参照图1,在一实施例中,该电视机的EMI定位方法包括:The present invention provides an EMI positioning method for a television set. Referring to FIG. 1, in an embodiment, the EMI positioning method of the television set includes:
步骤S10,在接收到预设的EMI测试指令时,对电视机的各被测EMI电路子单元的工作状态、工作模块或工作频率进行控制;Step S10, when receiving the preset EMI test command, controlling the working state, the working module or the working frequency of each tested EMI circuit subunit of the television;
本发明实施例提供的电视机的EMI定位方法主要应用在电视机的EMI定位测试系统中,用于准确快速地定位电视机的EMI干扰源,从而快速有效地找到相应措施改善电视机的EMI辐射值,使电视机产品达到销售地域的EMI指标要求。The EMI positioning method of the television set provided by the embodiment of the invention is mainly applied to the EMI positioning test system of the television set, and is used for accurately and quickly locating the EMI interference source of the television set, thereby quickly and effectively finding corresponding measures to improve the EMI radiation of the television set. The value of the TV product meets the EMI requirements of the sales territory.
具体地,本发明实施例提供的该电视机的EMI定位方法,首先是在接收到预设的EMI测试指令时,对电视机的各被测EMI电路子单元的工作状态、工作模块或工作频率进行控制。可以理解的是,在一实施例中,所述预设的EMI测试指令可以是电视机遥控器发出的EMI测试指令,例如在电视机的遥控器上增设一个EMI测试专用按键,测试人员通过按下此EMI测试专用按键来发出所述预设的EMI测试指令,电视机在接收到遥控器发出的此EMI测试指令时,触发电视机进入EMI测试工作流程;在另一实施例中,测试人员还可以通过按下电视机遥控器上原有的若干数字按键、若干字母按键或若干数字按键加若干字母按键的组合形式以实现输入所述预设的EMI测试指令的目的,即相当于通过遥控器输入预设的EMI测试密码的形式触发电视机进入EMI测试工作。以下各实施例中,以在在电视机的遥控器上增设一个EMI测试专用按键,用户通过按下此EMI测试专用按键以触发电视机进入EMI测试工作为例对本发明电视机的EMI定位方法进行详细说明。本实施例提供的该电视机的EMI定位方法,在接收到用户通过按下遥控器上增设的EMI测试专用按键所发出的所述预设的EMI测试指令时,对电视机的各被测EMI电路子单元的工作状态、工作模块或工作频率进行控制。Specifically, the EMI positioning method of the television set provided by the embodiment of the present invention is first, when receiving a preset EMI test command, an operating state, a working module, or an operating frequency of each tested EMI circuit subunit of the television set. Take control. It can be understood that, in an embodiment, the preset EMI test command may be an EMI test command issued by a TV remote controller, for example, an EMI test dedicated button is added to a remote controller of the television, and the tester presses the button. The EMI test dedicated button is used to issue the preset EMI test command, and the television triggers the television to enter the EMI test workflow when receiving the EMI test command issued by the remote controller; in another embodiment, the tester The purpose of inputting the preset EMI test command may also be achieved by pressing a combination of a plurality of digital keys, a plurality of alphabetic keys, or a plurality of numeric keys plus a plurality of alphabetic keys on the remote control of the television, that is, equivalent to passing the remote controller. Entering the preset EMI test password triggers the TV to enter the EMI test. In the following embodiments, an EMI test dedicated button is added to the remote controller of the television, and the EMI positioning method of the television set of the present invention is performed by pressing the EMI test dedicated button to trigger the television to enter the EMI test. Detailed description. The EMI positioning method of the television set provided by the embodiment, when receiving the preset EMI test command issued by the user by pressing an EMI test dedicated button added on the remote controller, the measured EMI of the television set The operating state, working module or operating frequency of the circuit subunit is controlled.
步骤S20,获取EMI检测仪对各被测EMI电路子单元在不同工作状态、不同工作模块或不同工作频率时所检测到的EMI辐射值,所述EMI辐射值包括EMI辐射频率值和EMI辐射幅度值;Step S20: Acquire an EMI radiation value detected by the EMI detector for each EMI circuit subunit under different working states, different working modules or different operating frequencies, where the EMI radiation value includes an EMI radiation frequency value and an EMI radiation amplitude. value;
步骤S30,根据获取到的EMI辐射值,分析确定EMI干扰源电路子单元。Step S30, analyzing and determining the EMI interference source circuit sub-unit according to the obtained EMI radiation value.
具体地,在本实施例中,在接收到用户通过按下遥控器上增设的EMI测试专用按键所发出的所述预设的EMI测试指令时,通过对电视机的各被测EMI电路子单元的工作状态、工作模块或工作频率的控制,然后通过 EMI检测仪检测各被测EMI电路子单元在不同工作状态、不同工作模块或不同工作频率时的EMI辐射值(包括EMI辐射频率值和EMI辐射幅度值),接着获取EMI检测仪对各被测EMI电路子单元在不同工作状态、不同工作模块或不同工作频率时所检测到的EMI辐射频率值和EMI辐射幅度值,根据获取到的EMI辐射频率值和EMI辐射幅度值,分析确定EMI干扰源电路子单元,从而实现对电视机的EMI干扰源的定位。在本实施例中,是通过分析各被测EMI电路子单元在不同工作状态、不同工作模块或不同工作频率时的EMI辐射值的变化情况,以确定电视机的EMI干扰源具体是在电视机的哪个电路子单元上。例如,控制被测EMI电路子单元由工作状态变为不工作状态(即被测EMI电路子单元的工作状态发生了改变),分析在改变被测EMI电路子单元的工作状态的情况下,EMI检测仪检测到的EMI辐射频率值和EMI辐射幅度值是否发现了变化,若EMI检测仪检测到的EMI辐射频率值和EMI辐射幅度值均未发生变化,则可以确定所述被测EMI电路子单元不是电视机的EMI干扰源电路子单元,即电视机的EMI干扰源不在所述被测EMI电路子单元上,即本实施例电视机的EMI定位方法,当改变所述被测EMI电路子单元的工作状态时,若获取到的EMI辐射频率值和EMI辐射幅度值均未发生变化,则判断所述被测EMI电路子单元不是EMI干扰源电路单元;反之,若在改变被测EMI电路子单元的工作状态后,若EMI检测仪检测到的EMI辐射频率值发生了变化或检测到的EMI辐射幅度值发生了变化,则可以确定所述被测EMI电路子单元是电视机的EMI干扰源电路子单元,即电视机的EMI干扰源可以定位在所述被测EMI电路子单元上,即本实施例电视机的EMI定位方法,当改变所述被测EMI电路子单元的工作状态时,若获取到的EMI辐射频率值发生了变化或获取到的EMI辐射幅度值发生了变化,则判断所述被测EMI电路子单元是EMI干扰源电路单元;并且,本实施例电视机的EMI定位方法,当所述被测EMI电路子单元不工作时,获取到EMI辐射值,则判断所述被测EMI电路子单元不是EMI干扰源电路单元。Specifically, in the embodiment, when the preset EMI test command issued by the user by pressing the EMI test dedicated button added on the remote controller is received, the EMI circuit subunits of the TV are tested. Control of the working state, working module or working frequency, then pass The EMI detector detects the EMI radiation value (including the EMI radiation frequency value and the EMI radiation amplitude value) of each EMI circuit subunit under different working states, different working modules or different operating frequencies, and then acquires the EMI detector for each measured The EMI radiation frequency value and the EMI radiation amplitude value detected by the EMI circuit subunit under different working states, different working modules or different operating frequencies, and the EMI interference source is analyzed and determined according to the obtained EMI radiation frequency value and the EMI radiation amplitude value. A circuit subunit that enables positioning of the EMI interference source to the television. In this embodiment, by analyzing the change of the EMI radiation value of each EMI circuit subunit under different working states, different working modules or different operating frequencies, the EMI interference source of the television is determined to be specifically in the television. Which circuit subunit is on. For example, controlling the EMI circuit subunit to be tested from the working state to the inactive state (ie, the operating state of the EMI circuit subunit under test is changed), and analyzing the EMI in the case of changing the operating state of the EMI circuit subunit under test, Whether the EMI radiation frequency value and the EMI radiation amplitude value detected by the detector are found to be changed, and if the EMI radiation frequency value and the EMI radiation amplitude value detected by the EMI detector are not changed, the measured EMI circuit can be determined. The unit is not the EMI interference source circuit subunit of the television set, that is, the EMI interference source of the television is not on the EMI circuit subunit to be tested, that is, the EMI positioning method of the television set of the embodiment, when the EMI circuit to be tested is changed In the working state of the unit, if the obtained EMI radiation frequency value and the EMI radiation amplitude value do not change, it is determined that the measured EMI circuit sub-unit is not an EMI interference source circuit unit; otherwise, if the measured EMI circuit is changed After the operating state of the subunit, if the EMI radiation frequency value detected by the EMI detector changes or the detected EMI radiation amplitude value changes, it may be determined that the The EMI circuit subunit is an EMI interference source circuit subunit of the television set, that is, the EMI interference source of the television set can be positioned on the EMI circuit subunit to be tested, that is, the EMI positioning method of the television set of the embodiment, when the When the measured EMI radiation sub-unit is in operation, if the obtained EMI radiation frequency value changes or the acquired EMI radiation amplitude value changes, it is determined that the EMI circuit sub-unit under test is an EMI interference source circuit unit. Moreover, in the EMI positioning method of the television set of the embodiment, when the EMI radiation sub-unit is not working, when the EMI radiation value is obtained, it is determined that the EMI circuit sub-unit under test is not an EMI interference source circuit unit.
同理,通过分析被测EMI电路子单元处于工作状态下的不同工作模式或不同工作频率下所获取到的EMI辐射值,亦可确定电视机的EMI干扰源电路子单元。具体地,当所述被测EMI电路子单元工作时,改变其工作模式或改变其工作频率后,若获取到的辐射频率值发生了变化或获取到的辐射幅度值发生了变化,则判断所述被测EMI电路子单元是EMI干扰源电路单元;当所述被测EMI电路子单元工作时,改变其工作模式或改变其工作频率后,若获取到的EMI辐射频率值和EMI辐射幅度值均未发生变化,则判断所述被测EMI电路子单元不是EMI干扰源电路单元。 Similarly, by analyzing the EMI radiation values obtained by different operating modes or different operating frequencies of the EMI circuit sub-unit under test, the EMI interference source circuit sub-unit of the television can also be determined. Specifically, when the measured EMI circuit subunit operates, after changing its working mode or changing its working frequency, if the obtained radiation frequency value changes or the acquired radiation amplitude value changes, the judgment center The EMI circuit subunit to be tested is an EMI interference source circuit unit; when the EMI circuit subunit is operated, after changing its working mode or changing its operating frequency, if the obtained EMI radiation frequency value and EMI radiation amplitude value are obtained If no change occurs, it is determined that the EMI circuit subunit to be tested is not an EMI interference source circuit unit.
本实施例提供的该电视机的EMI定位方法,在接收到预设的EMI测试指令时,对电视机的各被测EMI电路子单元的工作状态、工作模块或工作频率进行控制;然后获取EMI检测仪对各被测EMI电路子单元在不同工作状态、不同工作模块或不同工作频率时所检测到的EMI辐射值;最后根据获取到的EMI辐射值,分析确定EMI干扰源电路子单元。本实施例提供的该电视机的EMI定位方法现对于现有技术中对电视机的EMI定位方法,具有EMI定位效率高、EMI定位准确性高及测试成本低的优点。The EMI positioning method of the television provided by the embodiment controls the working state, working module or working frequency of each EMI circuit sub-unit of the television when receiving the preset EMI test command; and then acquires EMI The EMI radiation value detected by the detector for each EMI circuit subunit under different working states, different working modules or different operating frequencies; finally, the EMI interference source circuit subunit is analyzed and determined according to the obtained EMI radiation value. The EMI positioning method of the television set provided by this embodiment has the advantages of high EMI positioning efficiency, high EMI positioning accuracy, and low testing cost for the EMI positioning method for the television set in the prior art.
进一步地,参照图2,基于本发明电视机的EMI定位方法第一实施例,在本发明电视机的EMI定位方法第二实施例中,在上述步骤S10之前还包括:Further, referring to FIG. 2, in the second embodiment of the EMI positioning method of the television set according to the present invention, in the second embodiment of the EMI positioning method of the television set of the present invention, before the step S10, the method further includes:
步骤S01,根据是否包含开关电源电路或高频信号电路,对电视机进行模块划分,将电视机划分为若干EMI模块;Step S01, according to whether the switching power supply circuit or the high-frequency signal circuit is included, the television is divided into modules, and the television is divided into several EMI modules;
步骤S02,根据各所述EMI模块工作时是否含有开关信号或高频信号,将各所述EMI模块分别进行电路单元划分,将各所述EMI模块分别划分为若干EMI电路单元;Step S02, according to whether each of the EMI modules contains a switching signal or a high-frequency signal, each of the EMI modules is separately divided into circuit units, and each of the EMI modules is divided into a plurality of EMI circuit units;
步骤S03,根据各所述EMI电路单元工作时是否含有开关信号或高频信号,将各所述EMI电路单元分别进行子单元电路划分,将各所述EMI电路单元分别划分为若干被测EMI电路子单元。Step S03, according to whether each of the EMI circuit units contains a switching signal or a high-frequency signal, each of the EMI circuit units is divided into sub-unit circuits, and each of the EMI circuit units is divided into a plurality of measured EMI circuits. Subunit.
具体地,本实施例中,根据是否包含开关电源电路或高频信号电路,对电视机进行模块划分,参照图7,本实施例将电视机10划分为以下EMI模块:电源板11、机芯板12和液晶显示屏13,即电视机的电源板11、机芯板12和液晶显示屏13是能产生EMI辐射的电路模块。在本实施例中,电视机的电源板11、机芯板12和液晶显示屏13也称为电视机中能够产生EMI辐射干扰源的第一层级,这一层级的划分关键是看模块是否包含开关电源电路或高频信号电路部分,如果不包含开关电源电路或高频信号电路部分,则不能划分为第一层级。例如电视机的背光模组,背光模组工作时具有开关电流信号(能产生EMI辐射的信号),但是电视机的背光模组不能划分到上述第一层级中,因为电视机的背光模组的开关信号是由电源板提供的,当电源板关闭背光信号后,背光模组就不再存在开关电流信号。Specifically, in this embodiment, the television is divided into modules according to whether the switching power supply circuit or the high-frequency signal circuit is included. Referring to FIG. 7, the television 10 is divided into the following EMI modules: the power board 11 and the movement. The board 12 and the liquid crystal display 13, that is, the power board 11, the core board 12, and the liquid crystal display 13 of the television are circuit modules capable of generating EMI radiation. In this embodiment, the power board 11, the core board 12 and the liquid crystal display 13 of the television are also referred to as the first level in the television capable of generating EMI radiation interference sources. The key to dividing the level is to see if the module contains The switching power supply circuit or the high-frequency signal circuit part cannot be divided into the first level if it does not include the switching power supply circuit or the high-frequency signal circuit part. For example, the backlight module of a television has a switching current signal (a signal capable of generating EMI radiation) when working, but the backlight module of the television cannot be divided into the above first level because the backlight module of the television The switch signal is provided by the power board. When the power board turns off the backlight signal, the backlight module no longer has a switch current signal.
然后,根据各所述EMI模块工作时是否含有开关信号或高频信号,将各所述EMI模块分别进行电路单元的划分,将各所述EMI模块分别划分为若干EMI电路单元,即根据各所述EMI模块工作时是否含有开关信号或高频信号,将电视机的上述第一层级中的各EMI模块分别划分为若干EMI电路单元。例如,参照图8,本实施例根据电视机的机芯板12(第一层级)工作时是否含有开关信号或高频信号,将电视机的机芯板12划分为以下EMI电路单元:功放电路单元121、网口电路单元122、高频头电路单元123、解码电路单元124、SOC电路单元125和供电电路单元126。在本实施例中,机芯板12中的所述功放电路单元121、网口电路单元122、高频头电路单元123、解码电路单元124、SOC电路单元125和供电电路单元126也称为电视机中能够产生EMI辐射干扰源的第二层级。第二层级的划分关键是看电路工作时是否含有开关信号或高频信号,当然具体的电路结构需要具体划分,例如有的SOC电路已经集成了网口电路,那么网口电路就不需要划分在第二层级。Then, according to whether each of the EMI modules is operated with a switching signal or a high-frequency signal, each of the EMI modules is separately divided into circuit units, and each of the EMI modules is divided into a plurality of EMI circuit units, that is, according to each Whether the EMI module contains a switching signal or a high frequency signal when operating, divides each EMI module in the first level of the television into several EMI circuit units. For example, referring to FIG. 8, the present embodiment divides the movement board 12 of the television into the following EMI circuit unit according to whether the movement board 12 (first level) of the television set contains a switching signal or a high frequency signal: the power amplifier circuit The unit 121, the network port circuit unit 122, the tuner circuit unit 123, the decoding circuit unit 124, the SOC circuit unit 125, and the power supply circuit unit 126. In the present embodiment, the power amplifier circuit unit 121, the network port circuit unit 122, the tuner circuit unit 123, the decoding circuit unit 124, the SOC circuit unit 125, and the power supply circuit unit 126 in the core board 12 are also referred to as televisions. A second level of EMI radiation interference sources can be generated in the machine. The key to the division of the second level is to see whether the circuit contains a switching signal or a high-frequency signal. Of course, the specific circuit structure needs to be specifically divided. For example, some SOC circuits have integrated network port circuits, then the network port circuit does not need to be divided. The second level.
接着,根据各所述EMI电路单元工作时是否含有开关信号或高频信号,将各所述EMI电路单元分别进行子单元电路划分,将各所述EMI电路单元分别划分为若干被测EMI电路子单元,即根据各所述EMI电路单元工作时是否含有开关信号或高频信号,将电视机的上述第二层级中的各EMI电路单元分别划分为若干被测EMI电路子单元。例如,参照图9,本实施例根据电视机的机芯板12(第一层级)中的SOC电路单元125(第二层级)工作时是否含有开关信号或高频信号,将电视机的机芯板12中的SOC电路单元125划分为以下被测EMI电路子单元:DDR控制电路子单元1251、信号输入电路子单元1252、信号输出电路子单元1253、音频处理电路子单元1254和视频处理电路子单元1255。在本实施例中,上述SOC电路125中的DDR控制电路子单元1251、信号输入电路子单元1252、信号输出电路子单元1253、音频处理电路子单元1254和视频处理电路子单元1255也称为电视机中能够产生EMI辐射干扰源的第三层级。第三层级的划分同样是看电路工作时是否含有开关信号或高频信号。另外,需要说明的是,上述对电视机的模块层级的划分可以根据实际需要进行划分,在其他实施例中,还可以划分为更多的层级。本实施例是将电视机划分为上述第一层级、第二层级和第三层级(即三个层级)为例来对本发明电视机的EMI定位方法进行详细说明。Then, according to whether each of the EMI circuit units operates with a switching signal or a high-frequency signal, each of the EMI circuit units is divided into sub-unit circuits, and each of the EMI circuit units is divided into a plurality of EMI circuits to be tested. The unit, that is, according to whether each of the EMI circuit units operates with a switching signal or a high frequency signal, each EMI circuit unit in the second level of the television set is divided into a plurality of EMI circuit subunits to be tested. For example, referring to FIG. 9, the present embodiment adjusts the movement of the television according to whether the SOC circuit unit 125 (second level) in the movement board 12 (first level) of the television set contains a switching signal or a high frequency signal. The SOC circuit unit 125 in the board 12 is divided into the following EMI circuit subunits to be tested: a DDR control circuit subunit 1251, a signal input circuit subunit 1252, a signal output circuit subunit 1253, an audio processing circuit subunit 1254, and a video processing circuit. Unit 1255. In the present embodiment, the DDR control circuit sub-unit 1251, the signal input circuit sub-unit 1252, the signal output circuit sub-unit 1253, the audio processing circuit sub-unit 1254, and the video processing circuit sub-unit 1255 in the SOC circuit 125 are also referred to as televisions. The third level of the machine is capable of generating sources of EMI radiation interference. The third level of division is also to see whether the circuit contains a switching signal or a high frequency signal. In addition, it should be noted that the above-mentioned division of the module level of the television set may be divided according to actual needs, and in other embodiments, it may be further divided into more levels. In this embodiment, the EMI positioning method of the television set of the present invention is described in detail by dividing the television set into the first level, the second level, and the third level (ie, three levels).
本实施例电视机的EMI定位方法借助电视机主芯片SOC强大的处理控制能力,采用多层次模块化的定位测试方法,达到快速定位EMI干扰源,即通过将电视机划分为尽可能多的层级,第一层级代表电视机的几个大的EMI模块,这几个大的EMI模块就构成了整个电视机系统中可能的辐射源,第二层级是将第一层级中的EMI模块再细分为几个稍大的EMI电路单元,第三层级就是将第二层级中的EMI电路单元再划分为几个更小的EMI电路子单元。本实施例电视机的EMI定位方法将电视机的模块电路划分为上述第一层级、第二层级和第三层级之后,在接收到预设的EMI测试指令时,对电视机的各被测EMI电路子单元(即上述第三层级中的EMI电路子单元)的工作状态、工作模块或工作频率进行控制,然后获取EMI检测仪对各被测EMI电路子单元在不同工作状态、不同工作模块或不同工作频率时所检测到的EMI辐射值,所述EMI辐射值包括EMI辐射频率值和EMI辐射幅度值,接着根据获取到的EMI辐射值,分析确定电视机的EMI干扰源电路子单元。The EMI positioning method of the TV set of the present embodiment utilizes the powerful processing and control capability of the TV main chip SOC, and adopts a multi-level modular positioning test method to quickly locate the EMI interference source, that is, by dividing the TV into as many levels as possible. The first level represents several large EMI modules of the TV set. These large EMI modules constitute the possible radiation sources in the entire TV system. The second level is to subdivide the EMI modules in the first level. For several slightly larger EMI circuit units, the third level is to subdivide the EMI circuit cells in the second level into several smaller EMI circuit sub-units. The EMI positioning method of the television set of the embodiment divides the module circuit of the television into the first level, the second level, and the third level, and after receiving the preset EMI test command, the measured EMI of the television The operating state, working module or operating frequency of the circuit subunit (ie, the EMI circuit subunit in the third level above) is controlled, and then the EMI detector is obtained for each EMI circuit subunit under different working states, different working modules or The EMI radiation value detected at different operating frequencies, the EMI radiation value including the EMI radiation frequency value and the EMI radiation amplitude value, and then determining the EMI interference source circuit sub-unit of the television set based on the acquired EMI radiation value.
本实施例电视机的EMI定位方法,采用多层次模块化的定位测试方法,达到快速准确定位EMI干扰源的目的,从而使得本实施例电视机的EMI定位方法具有EMI定位效率高和EMI定位准确性强的优点;同时,由于本实施例电视机的EMI定位方法相对应现有技术中的EMI定位方法,极大地缩短了EMI定位时间,从而大大地降低了劳动成本。The EMI positioning method of the television set of the embodiment adopts a multi-level modular positioning test method to achieve the purpose of quickly and accurately locating the EMI interference source, so that the EMI positioning method of the television set of the embodiment has high EMI positioning efficiency and accurate EMI positioning. At the same time, since the EMI positioning method of the television set of the present embodiment corresponds to the EMI positioning method in the prior art, the EMI positioning time is greatly shortened, thereby greatly reducing the labor cost.
进一步地,参照图3,基于本发明电视机的EMI定位方法第二实施例,在本发明电视机的EMI定位方法第三实施例中,上述步骤S10包括:Further, referring to FIG. 3, in the third embodiment of the EMI positioning method of the television set according to the present invention, in the third embodiment of the EMI positioning method of the television set of the present invention, the foregoing step S10 includes:
步骤S11,在接收到预设的EMI测试指令时,调用并显示预设的EMI测试UI界面;所述EMI测试UI界面包含电视机的各所述EMI模块、与各所述EMI模块相对应的EMI电路单元以及与各EMI电路单元相对应的被测EMI电路子单元;Step S11, when a preset EMI test command is received, calling and displaying a preset EMI test UI interface; the EMI test UI interface includes each of the EMI modules of the television, corresponding to each of the EMI modules An EMI circuit unit and a measured EMI circuit subunit corresponding to each EMI circuit unit;
步骤S12,在接收到EMI模块选择指令时,调用并显示与选择的EMI模块相对应的各EMI电路单元;Step S12, when receiving the EMI module selection instruction, calling and displaying each EMI circuit unit corresponding to the selected EMI module;
步骤S13,在接收到EMI电路单元选择指令时,调用并显示与选择的EMI电路单元相对应的各EMI电路子单元;Step S13, when receiving the EMI circuit unit selection instruction, calling and displaying each EMI circuit sub-unit corresponding to the selected EMI circuit unit;
步骤S14,在接收到EMI电路子单元选择指令时,对选择的被测EMI电路子单元的工作状态、工作电路单元或工作频率进行控制。Step S14, when receiving the EMI circuit subunit selection command, control the working state, the working circuit unit or the operating frequency of the selected EMI circuit subunit to be tested.
可以理解的是,在本实施例中,在接收到预设的EMI测试指令时,调用并显示预设的EMI测试UI界面之后,后续的所述EMI模块选择指令、所述EMI电路单元选择指令以及EMI电路子单元选择指令的输入可以通过电视机遥控器上的方位选择按键中的相应按键及OK确认按键输入。另外,需要说明的是,在一实施例中,对各所述EMI模块的EMI定位测试顺序、对与各所述EMI模块相对应的EMI电路单元的EMI定位测试顺序以及对与各EMI电路单元相对应的被测EMI电路子单元的EMI定位测试顺序可以采用盲人摸象式的处理方式,逐一排除定位;在另一实施例中,测试人员也可以凭自身行业经验选择存在EMI干扰源几率最大的EMI模块、EMI电路单元及被测EMI电路子单元优先进行EMI测试。本实施例以对电视机的机芯板的EMI定位测试为例对本实施例电视机的EMI定位方法进行详细说明:It can be understood that, in this embodiment, after receiving the preset EMI test instruction, after the preset EMI test UI interface is invoked and displayed, the subsequent EMI module selection instruction, the EMI circuit unit selection instruction And the input of the EMI circuit subunit selection command can be input through the corresponding button in the orientation selection button on the TV remote control and the OK confirmation button. In addition, it should be noted that, in an embodiment, an EMI positioning test sequence for each of the EMI modules, an EMI positioning test sequence for the EMI circuit unit corresponding to each of the EMI modules, and a pair of EMI circuit units The corresponding EMI positioning test sequence of the tested EMI circuit sub-units can be blindly image-based, and the positioning is eliminated one by one. In another embodiment, the tester can also select the EMI with the highest probability of EMI interference sources based on his own industry experience. The module, the EMI circuit unit, and the EMI circuit subunit under test are prioritized for EMI testing. In this embodiment, the EMI positioning method of the television set of the embodiment is described in detail by taking the EMI positioning test of the movement board of the television as an example:
具体地,本实施例电视机的EMI定位方法,在接收到预设的EMI测试指令时,调用并显示预设的EMI测试UI界面;然后,在接收到EMI模块选择指令(其选择的测试对象为电视机的机芯板)时,调用并显示与选择的所述机芯板相对应的各EMI电路单元,包括功放电路单元、网口电路单元、高频头电路单元、解码电路单元、SOC电路单元和供电电路单元;接着,在接收到EMI电路单元选择指令(若该指令选择的测试对象为所述机芯板中的 SOC电路)时,调用并显示与选择的所述SOC电路单元相对应的各EMI电路子单元,包括DDR控制电路子单元、信号输入电路子单元、信号输出电路子单元、音频处理电路子单元和视频处理电路子单元;然后,在接收到EMI电路子单元选择指令(若该指令选择的测试对象为所述SOC电路中的音频处理电路子单元,即被测EMI电路子单元为所述音频处理电路子单元)时,则对选择的所述音频处理电路子单元的工作状态、工作电路单元或工作频率进行控制,然后根据EMI检测仪对所述音频处理电路子单元在不同工作状态、不同工作模块或不同工作频率时所检测到的EMI辐射值(即EMI辐射频率值和EMI辐射幅度值)的变化情况,分析确定所述音频处理电路子单元是否为电视机的EMI干扰源电路子单元。Specifically, the EMI positioning method of the television set of the embodiment calls and displays a preset EMI test UI interface when receiving a preset EMI test command; and then receives an EMI module selection instruction (the selected test object thereof) When it is a movement board of a television set, each EMI circuit unit corresponding to the selected movement board is called and displayed, including a power amplifier circuit unit, a network port circuit unit, a tuner circuit unit, a decoding circuit unit, and an SOC. a circuit unit and a power supply circuit unit; then, receiving an EMI circuit unit selection instruction (if the test object selected by the instruction is in the movement board) SOC circuit), calling and displaying each EMI circuit subunit corresponding to the selected SOC circuit unit, including a DDR control circuit subunit, a signal input circuit subunit, a signal output circuit subunit, an audio processing circuit subunit, and a video processing circuit subunit; then, receiving an EMI circuit subunit selection instruction (if the test object selected by the instruction is an audio processing circuit subunit in the SOC circuit, ie, the EMI circuit subunit under test is the audio processing In the circuit subunit, the operating state, the working circuit unit or the operating frequency of the selected audio processing circuit subunit are controlled, and then the audio processing circuit subunit is operated in different working states according to the EMI detector. The change in the EMI radiation value (ie, the EMI radiation frequency value and the EMI radiation amplitude value) detected by the module or at different operating frequencies is analyzed to determine whether the audio processing circuit sub-unit is an EMI interference source circuit sub-unit of the television set.
具体地,例如,控制所述音频处理电路子单元(即被测EMI电路子单元)由工作状态变为不工作状态(即所述音频处理电路子单元的工作状态发生了改变),分析在改变所述音频处理电路子单元的工作状态的情况下,EMI检测仪检测到的EMI辐射频率值和EMI辐射幅度值是否发现了变化,若EMI检测仪检测到的EMI辐射频率值和EMI辐射幅度值均没有发生变化,则可以确定所述音频处理电路子单元不是电视机的EMI干扰源电路子单元,即电视机的EMI干扰源不在所述音频处理电路子单元上;反之,若在改变所述音频处理电路子单元的工作状态后,若EMI检测仪检测到的EMI辐射频率值发生了变化或检测到的EMI辐射幅度值发生了变化,则可以确定所述音频处理电路子单元是电视机的EMI干扰源电路子单元,即电视机的EMI干扰源可以定位在所述音频处理电路子单元上;当所述音频处理电路子单元不工作时,获取到EMI辐射值,则判断所述音频处理电路子单元不是EMI干扰源电路单元。Specifically, for example, controlling the audio processing circuit sub-unit (ie, the EMI circuit sub-unit under test) to change from an active state to an inactive state (ie, the operating state of the audio processing circuit sub-unit has changed), and the analysis is changing. In the case of the operating state of the audio processing circuit subunit, whether the EMI radiation frequency value and the EMI radiation amplitude value detected by the EMI detector are found to be changed, if the EMI radiation frequency value and the EMI radiation amplitude value detected by the EMI detector If no change occurs, it may be determined that the audio processing circuit subunit is not an EMI interference source circuit subunit of the television set, that is, the EMI interference source of the television is not on the audio processing circuit subunit; After the operating state of the audio processing circuit subunit, if the EMI radiation frequency value detected by the EMI detector changes or the detected EMI radiation amplitude value changes, it may be determined that the audio processing circuit subunit is a television set. An EMI interference source circuit subunit, ie, an EMI interference source of the television set, can be positioned on the audio processing circuit subunit; Subunit processing circuit does not operate, the value of EMI radiation acquired, it is determined that the audio processing circuitry subunit than the EMI source circuit unit.
同理,通过分析所述音频处理电路子单元处于工作状态下的不同工作模式或不同工作频率下所获取到的EMI辐射值,亦可确定电视机的EMI干扰源是否在所述音频处理电路子单元上。具体地,当所述音频处理电路子单元工作时,改变其工作模式或改变其工作频率后,若获取到的辐射频率值发生了变化或获取到的辐射幅度值发生了变化,则判断所述音频处理电路子单元是EMI干扰源电路单元;当所述音频处理电路子单元工作时,改变其工作模式或改变其工作频率后,若获取到的EMI辐射频率值和EMI辐射幅度值均未发生变化,则判断所述音频处理电路子单元不是EMI干扰源电路单元。Similarly, by analyzing the EMI radiation values obtained by the audio processing circuit subunits in different working modes or different operating frequencies under working conditions, it may also be determined whether the EMI interference source of the television is in the audio processing circuit. On the unit. Specifically, when the audio processing circuit subunit operates, after changing its working mode or changing its operating frequency, if the obtained radiation frequency value changes or the acquired radiation amplitude value changes, it is determined that the The audio processing circuit subunit is an EMI interference source circuit unit; when the audio processing circuit subunit operates, after changing its working mode or changing its operating frequency, if the obtained EMI radiation frequency value and the EMI radiation amplitude value do not occur If it is changed, it is judged that the audio processing circuit subunit is not an EMI interference source circuit unit.
本实施例电视机的EMI定位方法,在接收到EMI电路子单元选择指令时,对选择的被测EMI电路子单元的工作状态、工作电路单元或工作频率进行控制,然后根据EMI检测仪对所述被测EMI电路子单元在不同工作状态、不同工作模块或不同工作频率时所检测到的EMI辐射值的变化情况,分析确定所述被测EMI电路子单元是否为电视机的EMI干扰源电路子单元。本实施例电视机的EMI定位方法具有EMI定位效率高和EMI定位准确性强的优点。The EMI positioning method of the television set of the embodiment controls the working state, the working circuit unit or the operating frequency of the selected EMI circuit subunit when receiving the EMI circuit subunit selection command, and then according to the EMI detector Determining whether the measured EMI circuit subunit is an EMI interference source circuit of the television set when the measured EMI circuit subunit changes in the EMI radiation value detected by different working states, different working modules or different operating frequencies Subunit. The EMI positioning method of the television set of this embodiment has the advantages of high EMI positioning efficiency and strong EMI positioning accuracy.
本发明还提供一种电视机的EMI定位装置,参照图4,在一实施例中,本发明提供的电视机的EMI定位装置100包括控制模块101、EMI辐射值获取模块102及分析模块103。The present invention also provides an EMI positioning apparatus for a television set. Referring to FIG. 4, in an embodiment, the EMI positioning apparatus 100 of the television set provided by the present invention includes a control module 101, an EMI radiation value acquisition module 102, and an analysis module 103.
其中,所述控制模块101,用于在接收到预设的EMI测试指令时,对电视机的各被测EMI电路子单元的工作状态、工作模块或工作频率进行控制;The control module 101 is configured to control, when receiving a preset EMI test command, an operating state, a working module, or an operating frequency of each tested EMI circuit subunit of the television;
本发明实施例提供的电视机的EMI定位装置主要应用在电视机的EMI定位测试系统中,用于准确快速地定位电视机的EMI干扰源,从而快速有效地找到相应措施改善电视机的EMI辐射值,使电视机产品达到销售地域的EMI指标要求。The EMI positioning device of the television set provided by the embodiment of the invention is mainly used in the EMI positioning test system of the television set, and is used for accurately and quickly locating the EMI interference source of the television set, thereby quickly and effectively finding corresponding measures to improve the EMI radiation of the television set. The value of the TV product meets the EMI requirements of the sales territory.
具体地,本发明实施例提供的该电视机的EMI定位装置,首先是所述控制模块101在接收到预设的EMI测试指令时,对电视机的各被测EMI电路子单元的工作状态、工作模块或工作频率进行控制。可以理解的是,在一实施例中,所述预设的EMI测试指令可以是电视机遥控器发出的EMI测试指令,例如在电视机的遥控器上增设一个EMI测试专用按键,测试人员通过按下此EMI测试专用按键来发出所述预设的EMI测试指令,电视机在接收到遥控器发出的此EMI测试指令时,触发电视机进入EMI测试工作流程;在另一实施例中,测试人员还可以通过按下电视机遥控器上原有的若干数字按键、若干字母按键或若干数字按键加若干字母按键的组合形式以实现输入所述预设的EMI测试指令的目的,即相当于通过遥控器输入预设的EMI测试密码的形式触发电视机进入EMI测试工作。以下各实施例中,以在在电视机的遥控器上增设一个EMI测试专用按键,用户通过按下此EMI测试专用按键以触发电视机进入EMI测试工作为例对本发明电视机的EMI定位装置进行详细说明。本实施例提供的该电视机的EMI定位装置,所述控制模块101在接收到用户通过按下遥控器上增设的EMI测试专用按键所发出的所述预设的EMI测试指令时,对电视机的各被测EMI电路子单元的工作状态、工作模块或工作频率进行控制。Specifically, the EMI positioning apparatus of the television set provided by the embodiment of the present invention is first, when the control module 101 receives a preset EMI test command, the working state of each EMI circuit subunit of the television, The working module or operating frequency is controlled. It can be understood that, in an embodiment, the preset EMI test command may be an EMI test command issued by a TV remote controller, for example, an EMI test dedicated button is added to a remote controller of the television, and the tester presses the button. The EMI test dedicated button is used to issue the preset EMI test command, and the television triggers the television to enter the EMI test workflow when receiving the EMI test command issued by the remote controller; in another embodiment, the tester The purpose of inputting the preset EMI test command may also be achieved by pressing a combination of a plurality of digital keys, a plurality of alphabetic keys, or a plurality of numeric keys plus a plurality of alphabetic keys on the remote control of the television, that is, equivalent to passing the remote controller. Entering the preset EMI test password triggers the TV to enter the EMI test. In the following embodiments, an EMI test dedicated button is added to the remote controller of the television, and the user presses the EMI test dedicated button to trigger the television to enter the EMI test work as an example to perform the EMI positioning device of the television set of the present invention. Detailed description. The EMI positioning device of the television set provided by the embodiment, the control module 101, when receiving the preset EMI test command issued by the user by pressing an EMI test dedicated button added on the remote controller, to the television set The operating state, working module or operating frequency of each EMI circuit subunit under test is controlled.
所述EMI辐射值获取模块102,用于获取EMI检测仪对各被测EMI电路子单元在不同工作状态、不同工作模块或不同工作频率时所检测到的EMI辐射值,所述EMI辐射值包括EMI辐射频率值和EMI辐射幅度值;The EMI radiation value acquisition module 102 is configured to acquire an EMI radiation value detected by the EMI detector for each EMI circuit subunit under different working states, different working modules or different operating frequencies, where the EMI radiation value includes EMI radiation frequency value and EMI radiation amplitude value;
所述分析模块103,用于根据获取到的EMI辐射值,分析确定EMI干扰源电路子单元。The analyzing module 103 is configured to analyze and determine an EMI interference source circuit sub-unit according to the obtained EMI radiation value.
具体地,在本实施例中,在接收到用户通过按下遥控器上增设的EMI测试专用按键所发出的所述预设的EMI测试指令时,由所述控制模块101对电视机的各被测EMI电路子单元的工作状态、工作模块或工作频率的控制,然后通过 EMI检测仪检测各被测EMI电路子单元在不同工作状态、不同工作模块或不同工作频率时的EMI辐射值(包括EMI辐射频率值和EMI辐射幅度值),接着所述EMI辐射值获取模块102获取EMI检测仪对各被测EMI电路子单元在不同工作状态、不同工作模块或不同工作频率时所检测到的EMI辐射频率值和EMI辐射幅度值,所述分析模块103根据所述EMI辐射值获取模块102获取到的EMI辐射频率值和EMI辐射幅度值,分析确定EMI干扰源电路子单元,从而实现对电视机的EMI干扰源的定位。在本实施例中,所述分析模块103是分析各被测EMI电路子单元在不同工作状态、不同工作模块或不同工作频率时的EMI辐射值的变化情况,以确定电视机的EMI干扰源具体是在电视机的哪个电路子单元上。例如,所述控制模块101控制被测EMI电路子单元由工作状态变为不工作状态(即被测EMI电路子单元的工作状态发生了改变),所述分析模块103分析在改变被测EMI电路子单元的工作状态的情况下,EMI检测仪检测到的EMI辐射频率值和EMI辐射幅度值是否发现了变化,若EMI检测仪检测到的EMI辐射频率值和EMI辐射幅度值均未发生变化,则可以确定所述被测EMI电路子单元不是电视机的EMI干扰源电路子单元,即电视机的EMI干扰源不在所述被测EMI电路子单元上,即本实施例电视机的EMI定位装置中的所述分析模块103还用于:当改变所述被测EMI电路子单元的工作状态时,若获取到的EMI辐射频率值和EMI辐射幅度值均未发生变化,则判断所述被测EMI电路子单元不是EMI干扰源电路单元;反之,若在改变被测EMI电路子单元的工作状态后,若EMI检测仪检测到的EMI辐射频率值发生了变化或检测到的EMI辐射幅度值发生了变化,则可以确定所述被测EMI电路子单元是电视机的EMI干扰源电路子单元,即电视机的EMI干扰源可以定位在所述被测EMI电路子单元上,即本实施例电视机的EMI定位装置中的所述分析模块103还用于:当改变所述被测EMI电路子单元的工作状态时,若获取到的EMI辐射频率值发生了变化或获取到的EMI辐射幅度值发生了变化,则判断所述被测EMI电路子单元是EMI干扰源电路单元;并且,本实施例电视机的EMI定位装置中的所述分析模块103还用于:当所述被测EMI电路子单元不工作时,获取到EMI辐射值,则判断所述被测EMI电路子单元不是EMI干扰源电路单元。Specifically, in the embodiment, when the preset EMI test command issued by the user by pressing the EMI test dedicated button added on the remote controller is received, the control module 101 controls each of the television sets. Measure the operating state of the EMI circuit subunit, the control of the working module or the operating frequency, and then pass The EMI detector detects EMI radiation values (including EMI radiation frequency values and EMI radiation amplitude values) of the tested EMI circuit subunits under different operating states, different working modules, or different operating frequencies, and then the EMI radiation value acquiring module 102 Obtaining an EMI radiation frequency value and an EMI radiation amplitude value detected by the EMI detector for each tested EMI circuit subunit under different working states, different working modules or different operating frequencies, and the analyzing module 103 is configured according to the EMI radiation value. The EMI radiation frequency value and the EMI radiation amplitude value acquired by the module 102 are obtained, and the EMI interference source circuit sub-unit is analyzed and determined, thereby realizing the positioning of the EMI interference source of the television. In this embodiment, the analysis module 103 analyzes the change of the EMI radiation value of each EMI circuit subunit under different working states, different working modules or different operating frequencies to determine the specific EMI interference source of the television. Which circuit subunit of the TV is on. For example, the control module 101 controls the EMI circuit subunit to be tested to change from the operating state to the inactive state (ie, the operating state of the EMI circuit subunit under test is changed), and the analyzing module 103 analyzes the EMI circuit under test. In the case of the operating state of the subunit, whether the EMI radiation frequency value and the EMI radiation amplitude value detected by the EMI detector have changed, if the EMI radiation frequency value and the EMI radiation amplitude value detected by the EMI detector have not changed, Then, it can be determined that the EMI circuit subunit to be tested is not an EMI interference source circuit subunit of the television, that is, the EMI interference source of the television is not on the EMI circuit subunit to be tested, that is, the EMI positioning device of the television of this embodiment The analyzing module 103 is further configured to: when the working state of the EMI circuit subunit to be tested is changed, if the obtained EMI radiation frequency value and the EMI radiation amplitude value do not change, determine the measured The EMI circuit subunit is not an EMI interference source circuit unit; conversely, if the EMI radiation frequency value detected by the EMI detector changes after changing the operating state of the EMI circuit subunit under test Or the detected EMI radiation amplitude value changes, it may be determined that the measured EMI circuit subunit is an EMI interference source circuit subunit of the television, that is, the EMI interference source of the television can be positioned in the measured EMI circuit The analyzing module 103 in the EMI positioning device of the television set of the embodiment is further configured to: when the working state of the EMI circuit subunit to be tested is changed, if the obtained EMI radiation frequency value occurs The change or the obtained EMI radiation amplitude value is changed, and then the EMI circuit subunit is determined to be an EMI interference source circuit unit; and the analysis module 103 in the EMI positioning device of the television set of the embodiment is further used. When the EMI circuit sub-unit is not working, when the EMI radiation value is obtained, it is determined that the EMI circuit sub-unit under test is not an EMI interference source circuit unit.
同理,通过分析被测EMI电路子单元处于工作状态下的不同工作模式或不同工作频率下所获取到的EMI辐射值,亦可确定电视机的EMI干扰源电路子单元。本实施例电视机的EMI定位装置中的所述分析模块103还用于:当所述被测EMI电路子单元工作时,改变其工作模式或改变其工作频率后,若获取到的辐射频率值发生了变化或获取到的辐射幅度值发生了变化,则判断所述被测EMI电路子单元是EMI干扰源电路单元;本实施例电视机的EMI定位装置中的所述分析模块103还用于:当所述被测EMI电路子单元工作时,改变其工作模式或改变其工作频率后,若获取到的EMI辐射频率值和EMI辐射幅度值均未发生变化,则判断所述被测EMI电路子单元不是EMI干扰源电路单元。 Similarly, by analyzing the EMI radiation values obtained by different operating modes or different operating frequencies of the EMI circuit sub-unit under test, the EMI interference source circuit sub-unit of the television can also be determined. The analysis module 103 in the EMI positioning device of the television set of the embodiment is further configured to: when the EMI circuit subunit is operated, change its working mode or change its working frequency, if the obtained radiation frequency value If the change or the obtained radiation amplitude value changes, it is determined that the EMI circuit subunit to be tested is an EMI interference source circuit unit; the analysis module 103 in the EMI positioning device of the television set of the embodiment is further used for When the EMI circuit subunit under test is changed, after changing its working mode or changing its operating frequency, if the obtained EMI radiation frequency value and the EMI radiation amplitude value are not changed, the EMI circuit to be tested is judged. The subunit is not an EMI interference source circuit unit.
本实施例提供的该电视机的EMI定位装置,所述控制模块101在接收到预设的EMI测试指令时,对电视机的各被测EMI电路子单元的工作状态、工作模块或工作频率进行控制;然后所述EMI辐射值获取模块102获取EMI检测仪对各被测EMI电路子单元在不同工作状态、不同工作模块或不同工作频率时所检测到的EMI辐射值;最后所述分析模块103根据获取到的EMI辐射值,分析确定EMI干扰源电路子单元。本实施例提供的该电视机的EMI定位装置具有EMI定位效率高、EMI定位准确性高及测试成本低的优点。The EMI positioning device of the television set provided by the embodiment, when the control module 101 receives the preset EMI test command, performs the working state, the working module or the working frequency of each EMI circuit subunit of the television. Controlling the EMI radiation value obtained by the EMI detector for each EMI circuit subunit under different operating states, different working modules or different operating frequencies; finally, the analyzing module 103 Based on the obtained EMI radiation value, the EMI interference source circuit sub-unit is determined by analysis. The EMI positioning device of the television set provided by the embodiment has the advantages of high EMI positioning efficiency, high EMI positioning accuracy, and low testing cost.
进一步地,参照图5,基于本发明电视机的EMI定位装置第一实施例,在本发明电视机的EMI定位装置第二实施例中,所述电视机的EMI定位装置100还包括第一划分模块104、第二划分模块105及第三划分模块106。 Further, referring to FIG. 5, in a second embodiment of an EMI positioning apparatus for a television set according to the present invention, in the second embodiment of the EMI positioning apparatus of the television set of the present invention, the EMI positioning apparatus 100 of the television set further includes a first division. The module 104, the second dividing module 105, and the third dividing module 106.
其中,所述第一划分模块104,用于根据是否包含开关电源电路或高频信号电路,对电视机进行模块划分,将电视机划分为若干EMI模块;The first dividing module 104 is configured to divide a television into modules according to whether a switching power supply circuit or a high-frequency signal circuit is included, and divide the television into a plurality of EMI modules;
所述第二划分模块105,用于根据各所述EMI模块工作时是否含有开关信号或高频信号,将各所述EMI模块分别进行电路单元划分,将各所述EMI模块分别划分为若干EMI电路单元;The second dividing module 105 is configured to divide each of the EMI modules into circuit units according to whether each of the EMI modules includes a switching signal or a high frequency signal, and divide each of the EMI modules into a plurality of EMIs. Circuit unit
所述第三划分模块106,用于根据各所述EMI电路单元工作时是否含有开关信号或高频信号,将各所述EMI电路单元分别进行子单元电路划分,将各所述EMI电路单元分别划分为若干被测EMI电路子单元。The third dividing module 106 is configured to divide each of the EMI circuit units into sub-unit circuits according to whether each of the EMI circuit units includes a switching signal or a high-frequency signal, and each of the EMI circuit units respectively Divided into a number of EMI circuit subunits under test.
具体地,本实施例中,所述第一划分模块104根据是否包含开关电源电路或高频信号电路,对电视机进行模块划分,参照图7,本实施例中,所述第一划分模块104将电视机10划分为以下EMI模块:电源板11、机芯板12和液晶显示屏13,即电视机的电源板11、机芯板12和液晶显示屏13是能产生EMI辐射的电路模块。在本实施例中,电视机的电源板11、机芯板12和液晶显示屏13也称为电视机中能够产生EMI辐射干扰源的第一层级,这一层级的划分关键是看模块是否包含开关电源电路或高频信号电路部分,如果不包含开关电源电路或高频信号电路部分,则不能划分为第一层级。例如电视机的背光模组,背光模组工作时具有开关电流信号(能产生EMI辐射的信号),但是电视机的背光模组不能划分到上述第一层级中,因为电视机的背光模组的开关信号是由电源板提供的,当电源板关闭背光信号后,背光模组就不再存在开关电流信号。Specifically, in this embodiment, the first dividing module 104 performs module partitioning on the television according to whether the switching power supply circuit or the high-frequency signal circuit is included. Referring to FIG. 7, in the embodiment, the first dividing module 104 The television set 10 is divided into the following EMI modules: a power board 11, a core board 12, and a liquid crystal display 13, that is, a power board 11, a core board 12, and a liquid crystal display 13 of the television are circuit modules capable of generating EMI radiation. In this embodiment, the power board 11, the core board 12 and the liquid crystal display 13 of the television are also referred to as the first level in the television capable of generating EMI radiation interference sources. The key to dividing the level is to see if the module contains The switching power supply circuit or the high-frequency signal circuit part cannot be divided into the first level if it does not include the switching power supply circuit or the high-frequency signal circuit part. For example, the backlight module of a television has a switching current signal (a signal capable of generating EMI radiation) when working, but the backlight module of the television cannot be divided into the above first level because the backlight module of the television The switch signal is provided by the power board. When the power board turns off the backlight signal, the backlight module no longer has a switch current signal.
然后,所述第二划分模块105根据各所述EMI模块工作时是否含有开关信号或高频信号,将各所述EMI模块分别进行电路单元的划分,将各所述EMI模块分别划分为若干EMI电路单元,即根据各所述EMI模块工作时是否含有开关信号或高频信号,将电视机的上述第一层级中的各EMI模块分别划分为若干EMI电路单元。例如,参照图8,本实施例中,所述第二划分模块105根据电视机的机芯板12(第一层级)工作时是否含有开关信号或高频信号,将电视机的机芯板12划分为以下EMI电路单元:功放电路单元121、网口电路单元122、高频头电路单元123、解码电路单元124、SOC电路单元125和供电电路单元126。在本实施例中,机芯板12中的所述功放电路单元121、网口电路单元122、高频头电路单元123、解码电路单元124、SOC电路单元125和供电电路单元126也称为电视机中能够产生EMI辐射干扰源的第二层级。第二层级的划分关键是看电路工作时是否含有开关信号或高频信号,当然具体的电路结构需要具体划分,例如有的SOC电路已经集成了网口电路,那么网口电路就不需要划分在第二层级。Then, the second dividing module 105 divides each of the EMI modules into circuit units according to whether each of the EMI modules contains a switching signal or a high-frequency signal, and divides each of the EMI modules into a plurality of EMIs. The circuit unit divides each EMI module in the first level of the television set into a plurality of EMI circuit units according to whether each of the EMI modules operates with a switching signal or a high frequency signal. For example, referring to FIG. 8, in the embodiment, the second dividing module 105 according to whether the movement board 12 (first level) of the television sets contains a switching signal or a high frequency signal, and the movement board 12 of the television set is used. It is divided into the following EMI circuit units: a power amplifier circuit unit 121, a network port circuit unit 122, a tuner circuit unit 123, a decoding circuit unit 124, a SOC circuit unit 125, and a power supply circuit unit 126. In the present embodiment, the power amplifier circuit unit 121, the network port circuit unit 122, the tuner circuit unit 123, the decoding circuit unit 124, the SOC circuit unit 125, and the power supply circuit unit 126 in the core board 12 are also referred to as televisions. A second level of EMI radiation interference sources can be generated in the machine. The key to the division of the second level is to see whether the circuit contains a switching signal or a high-frequency signal. Of course, the specific circuit structure needs to be specifically divided. For example, some SOC circuits have integrated network port circuits, then the network port circuit does not need to be divided. The second level.
接着,所述第三划分模块106根据各所述EMI电路单元工作时是否含有开关信号或高频信号,将各所述EMI电路单元分别进行子单元电路划分,将各所述EMI电路单元分别划分为若干被测EMI电路子单元,即根据各所述EMI电路单元工作时是否含有开关信号或高频信号,将电视机的上述第二层级中的各EMI电路单元分别划分为若干被测EMI电路子单元。例如,参照图9,本实施例中,所述第三划分模块106根据电视机的机芯板12(第一层级)中的SOC电路单元125(第二层级)工作时是否含有开关信号或高频信号,将电视机的机芯板12中的SOC电路单元125划分为以下被测EMI电路子单元:DDR控制电路子单元1251、信号输入电路子单元1252、信号输出电路子单元1253、音频处理电路子单元1254和视频处理电路子单元1255。在本实施例中,上述SOC电路125中的DDR控制电路子单元1251、信号输入电路子单元1252、信号输出电路子单元1253、音频处理电路子单元1254和视频处理电路子单元1255也称为电视机中能够产生EMI辐射干扰源的第三层级。第三层级的划分同样是看电路工作时是否含有开关信号或高频信号。另外,需要说明的是,上述对电视机的模块层级的划分可以根据实际需要进行划分,在其他实施例中,还可以划分为更多的层级。本实施例是将电视机划分为上述第一层级、第二层级和第三层级(即三个层级)为例来对本发明电视机的EMI定位装置进行详细说明。Next, the third dividing module 106 divides each of the EMI circuit units into sub-unit circuits according to whether each EMI circuit unit operates with a switching signal or a high-frequency signal, and divides each of the EMI circuit units For each of the EMI circuit subunits to be tested, that is, according to whether each of the EMI circuit units operates with a switching signal or a high frequency signal, each EMI circuit unit in the second level of the television set is divided into a plurality of EMI circuits to be tested. Subunit. For example, referring to FIG. 9, in the embodiment, the third dividing module 106 includes a switching signal or a high value according to the SOC circuit unit 125 (second level) in the movement board 12 (first level) of the television set. The frequency signal divides the SOC circuit unit 125 in the movement board 12 of the television into the following EMI circuit subunits to be tested: DDR control circuit sub-unit 1251, signal input circuit sub-unit 1252, signal output circuit sub-unit 1253, audio processing Circuit subunit 1254 and video processing circuit subunit 1255. In the present embodiment, the DDR control circuit sub-unit 1251, the signal input circuit sub-unit 1252, the signal output circuit sub-unit 1253, the audio processing circuit sub-unit 1254, and the video processing circuit sub-unit 1255 in the SOC circuit 125 are also referred to as televisions. The third level of the machine is capable of generating sources of EMI radiation interference. The third level of division is also to see whether the circuit contains a switching signal or a high frequency signal. In addition, it should be noted that the above-mentioned division of the module level of the television set may be divided according to actual needs, and in other embodiments, it may be further divided into more levels. In this embodiment, the EMI positioning device of the television set of the present invention is described in detail by dividing the television set into the first level, the second level, and the third level (ie, three levels).
本实施例电视机的EMI定位装置借助电视机主芯片SOC强大的处理控制能力,采用多层次模块化的定位测试装置,达到快速定位EMI干扰源,即通过将电视机划分为尽可能多的层级,第一层级代表电视机的几个大的EMI模块,这几个大的EMI模块就构成了整个电视机系统中可能的辐射源,第二层级是将第一层级中的EMI模块再细分为几个稍大的EMI电路单元,第三层级就是将第二层级中的EMI电路单元再划分为几个更小的EMI电路子单元。本实施例电视机的EMI定位装置将电视机的模块电路划分为上述第一层级、第二层级和第三层级之后,在接收到预设的EMI测试指令时,对电视机的各被测EMI电路子单元(即上述第三层级中的EMI电路子单元)的工作状态、工作模块或工作频率进行控制,然后获取EMI检测仪对各被测EMI电路子单元在不同工作状态、不同工作模块或不同工作频率时所检测到的EMI辐射值,所述EMI辐射值包括EMI辐射频率值和EMI辐射幅度值,接着根据获取到的EMI辐射值,分析确定电视机的EMI干扰源电路子单元。The EMI positioning device of the TV set of the present embodiment utilizes the powerful processing and control capability of the TV main chip SOC, and adopts a multi-level modular positioning test device to quickly locate the EMI interference source, that is, by dividing the TV into as many levels as possible. The first level represents several large EMI modules of the TV set. These large EMI modules constitute the possible radiation sources in the entire TV system. The second level is to subdivide the EMI modules in the first level. For several slightly larger EMI circuit units, the third level is to subdivide the EMI circuit cells in the second level into several smaller EMI circuit sub-units. The EMI positioning device of the television set of the embodiment divides the module circuit of the television into the first level, the second level and the third level, and after receiving the preset EMI test command, the measured EMI of the television The operating state, working module or operating frequency of the circuit subunit (ie, the EMI circuit subunit in the third level above) is controlled, and then the EMI detector is obtained for each EMI circuit subunit under different working states, different working modules or The EMI radiation value detected at different operating frequencies, the EMI radiation value including the EMI radiation frequency value and the EMI radiation amplitude value, and then determining the EMI interference source circuit sub-unit of the television set based on the acquired EMI radiation value.
本实施例电视机的EMI定位装置,采用多层次模块化的定位测试装置,达到快速准确定位EMI干扰源的目的,从而使得本实施例电视机的EMI定位装置具有EMI定位效率高和EMI定位准确性强的优点;同时,由于本实施例电视机的EMI定位装置极大地缩短了EMI定位时间,从而大大地降低了劳动成本。The EMI positioning device of the television set of the embodiment adopts a multi-level modular positioning test device to achieve the purpose of quickly and accurately locating the EMI interference source, so that the EMI positioning device of the television set of the embodiment has high EMI positioning efficiency and accurate EMI positioning. At the same time, since the EMI positioning device of the television set of the embodiment greatly shortens the EMI positioning time, the labor cost is greatly reduced.
进一步地,参照图6,基于本发明电视机的EMI定位装置第二实施例,在本发明电视机的EMI定位装置第三实施例中,上述控制模块101包括UI界面调用单元1011和控制单元1012。Further, referring to FIG. 6, in the third embodiment of the EMI positioning apparatus of the television set of the present invention, the control module 101 includes a UI interface calling unit 1011 and a control unit 1012. .
其中,所述UI界面调用单元1011,用于在接收到预设的EMI测试指令时,调用并显示预设的EMI测试UI界面;所述EMI测试UI界面包含电视机的各所述EMI模块、与各所述EMI模块相对应的EMI电路单元以及与各EMI电路单元相对应的被测EMI电路子单元;在接收到EMI模块选择指令时,调用并显示与选择的EMI模块相对应的各EMI电路单元;在接收到EMI电路单元选择指令时,调用并显示与选择的EMI电路单元相对应的各EMI电路子单元;The UI interface invoking unit 1011 is configured to invoke and display a preset EMI test UI interface when receiving a preset EMI test command, where the EMI test UI interface includes each of the EMI modules of the television set, An EMI circuit unit corresponding to each of the EMI modules and a measured EMI circuit sub-unit corresponding to each EMI circuit unit; when receiving an EMI module selection command, calling and displaying each EMI corresponding to the selected EMI module a circuit unit; upon receiving an EMI circuit unit selection instruction, calling and displaying each EMI circuit subunit corresponding to the selected EMI circuit unit;
所述控制单元1012,用于在接收到EMI电路子单元选择指令时,对选择的被测EMI电路子单元的工作状态、工作电路单元或工作频率进行控制。The control unit 1012 is configured to control an operating state, a working circuit unit, or an operating frequency of the selected EMI circuit subunit when receiving the EMI circuit subunit selection instruction.
可以理解的是,在本实施例中,所述UI界面调用单元1011在接收到预设的EMI测试指令时,调用并显示预设的EMI测试UI界面之后,后续的所述EMI模块选择指令、所述EMI电路单元选择指令以及EMI电路子单元选择指令的输入可以通过电视机遥控器上的方位选择按键中的相应按键及OK确认按键输入。另外,需要说明的是,在一实施例中,对各所述EMI模块的EMI定位测试顺序、对与各所述EMI模块相对应的EMI电路单元的EMI定位测试顺序以及对与各EMI电路单元相对应的被测EMI电路子单元的EMI定位测试顺序可以采用盲人摸象式的处理方式,逐一排除定位;在另一实施例中,测试人员也可以凭自身行业经验选择存在EMI干扰源几率最大的EMI模块、EMI电路单元及被测EMI电路子单元优先进行EMI测试。本实施例以对电视机的机芯板的EMI定位测试为例对本实施例电视机的EMI定位装置进行详细说明:It can be understood that, in this embodiment, after receiving the preset EMI test instruction, the UI interface invoking unit 1011 invokes and displays the preset EMI test UI interface, and the subsequent EMI module selection instruction, The input of the EMI circuit unit selection command and the EMI circuit subunit selection command may be input through a corresponding button of the orientation selection button on the television remote controller and an OK confirmation button. In addition, it should be noted that, in an embodiment, an EMI positioning test sequence for each of the EMI modules, an EMI positioning test sequence for the EMI circuit unit corresponding to each of the EMI modules, and a pair of EMI circuit units The corresponding EMI positioning test sequence of the tested EMI circuit sub-units can be blindly image-based, and the positioning is eliminated one by one. In another embodiment, the tester can also select the EMI with the highest probability of EMI interference sources based on his own industry experience. The module, the EMI circuit unit, and the EMI circuit subunit under test are prioritized for EMI testing. In this embodiment, the EMI positioning device of the television set of the embodiment is described in detail by taking the EMI positioning test of the movement board of the television as an example:
具体地,本实施例电视机的EMI定位装置,所述UI界面调用单元1011在接收到预设的EMI测试指令时,调用并显示预设的EMI测试UI界面;然后,所述UI界面调用单元1011在接收到EMI模块选择指令(其选择的测试对象为电视机的机芯板)时,调用并显示与选择的所述机芯板相对应的各EMI电路单元,包括功放电路单元、网口电路单元、高频头电路单元、解码电路单元、SOC电路单元和供电电路单元;接着,所述UI界面调用单元1011在接收到EMI电路单元选择指令(若该指令选择的测试对象为所述机芯板中的 SOC电路)时,调用并显示与选择的所述SOC电路单元相对应的各EMI电路子单元,包括DDR控制电路子单元、信号输入电路子单元、信号输出电路子单元、音频处理电路子单元和视频处理电路子单元;然后,所述UI界面调用单元1011在接收到EMI电路子单元选择指令(若该指令选择的测试对象为所述SOC电路中的音频处理电路子单元,即被测EMI电路子单元为所述音频处理电路子单元)时,则所述控制单元1012对选择的所述音频处理电路子单元的工作状态、工作电路单元或工作频率进行控制,然后根据EMI检测仪对所述音频处理电路子单元在不同工作状态、不同工作模块或不同工作频率时所检测到的EMI辐射值(即EMI辐射频率值和EMI辐射幅度值)的变化情况,分析确定所述音频处理电路子单元是否为电视机的EMI干扰源电路子单元。Specifically, in the EMI positioning apparatus of the television set of the embodiment, the UI interface invoking unit 1011 calls and displays a preset EMI test UI interface when receiving the preset EMI test instruction; then, the UI interface calling unit When receiving the EMI module selection instruction (the selected test object is the movement board of the television), the 1011 calls and displays each EMI circuit unit corresponding to the selected movement board, including the power amplifier circuit unit and the network port. a circuit unit, a tuner circuit unit, a decoding circuit unit, a SOC circuit unit, and a power supply circuit unit; then, the UI interface invoking unit 1011 receives an EMI circuit unit selection instruction (if the test object selected by the instruction is the machine) In the core board SOC circuit), calling and displaying each EMI circuit subunit corresponding to the selected SOC circuit unit, including a DDR control circuit subunit, a signal input circuit subunit, a signal output circuit subunit, an audio processing circuit subunit, and a video processing circuit subunit; then, the UI interface invoking unit 1011 receives an EMI circuit subunit selection instruction (if the test object selected by the instruction is an audio processing circuit subunit in the SOC circuit, that is, the measured EMI circuit When the subunit is the audio processing circuit subunit, the control unit 1012 controls the operating state, the working circuit unit or the operating frequency of the selected audio processing circuit subunit, and then according to the EMI detector The audio processing circuit subunit unit analyzes and determines the EMI radiation value (ie, the EMI radiation frequency value and the EMI radiation amplitude value) detected by the audio processing circuit subunit under different operating states, different working modules, or different operating frequencies. Whether it is the EMI interference source circuit subunit of the TV set.
具体地,例如,所述控制单元1012控制所述音频处理电路子单元(即被测EMI电路子单元)由工作状态变为不工作状态(即所述音频处理电路子单元的工作状态发生了改变),分析在改变所述音频处理电路子单元的工作状态的情况下,EMI检测仪检测到的EMI辐射频率值和EMI辐射幅度值是否发现了变化,若EMI检测仪检测到的EMI辐射频率值和EMI辐射幅度值均没有发生变化,则可以确定所述音频处理电路子单元不是电视机的EMI干扰源电路子单元,即电视机的EMI干扰源不在所述音频处理电路子单元上;反之,若在所述控制单元1012改变所述音频处理电路子单元的工作状态后,若EMI检测仪检测到的EMI辐射频率值发生了变化或检测到的EMI辐射幅度值发生了变化,则可以确定所述音频处理电路子单元是电视机的EMI干扰源电路子单元,即电视机的EMI干扰源可以定位在所述音频处理电路子单元上;当所述音频处理电路子单元不工作时,获取到EMI辐射值,则判断所述音频处理电路子单元不是EMI干扰源电路单元。Specifically, for example, the control unit 1012 controls the audio processing circuit sub-unit (ie, the EMI circuit sub-unit under test) to change from an active state to an inactive state (ie, the operating state of the audio processing circuit sub-unit has changed. And analyzing whether the EMI radiation frequency value and the EMI radiation amplitude value detected by the EMI detector are found to change when the operating state of the audio processing circuit subunit is changed, if the EMI radiation frequency value detected by the EMI detector And the EMI radiation amplitude value does not change, it can be determined that the audio processing circuit subunit is not the EMI interference source circuit subunit of the television, that is, the EMI interference source of the television is not on the audio processing circuit subunit; If after the control unit 1012 changes the operating state of the audio processing circuit subunit, if the EMI radiation frequency value detected by the EMI detector changes or the detected EMI radiation amplitude value changes, it may be determined The audio processing circuit subunit is a EMI interference source circuit subunit of the television, that is, the EMI interference source of the television can be located in the Audio processing circuit sub-unit; audio processing circuit when the sub-unit does not operate, the value of EMI radiation acquired, it is determined that the audio processing circuitry subunit than the EMI source circuit unit.
同理,通过分析所述音频处理电路子单元处于工作状态下的不同工作模式或不同工作频率下所获取到的EMI辐射值,亦可确定电视机的EMI干扰源是否在所述音频处理电路子单元上。具体地,当所述音频处理电路子单元工作时,改变其工作模式或改变其工作频率后,若获取到的辐射频率值发生了变化或获取到的辐射幅度值发生了变化,则判断所述音频处理电路子单元是EMI干扰源电路单元;当所述音频处理电路子单元工作时,改变其工作模式或改变其工作频率后,若获取到的EMI辐射频率值和EMI辐射幅度值均未发生变化,则判断所述音频处理电路子单元不是EMI干扰源电路单元。Similarly, by analyzing the EMI radiation values obtained by the audio processing circuit subunits in different working modes or different operating frequencies under working conditions, it may also be determined whether the EMI interference source of the television is in the audio processing circuit. On the unit. Specifically, when the audio processing circuit subunit operates, after changing its working mode or changing its operating frequency, if the obtained radiation frequency value changes or the acquired radiation amplitude value changes, it is determined that the The audio processing circuit subunit is an EMI interference source circuit unit; when the audio processing circuit subunit operates, after changing its working mode or changing its operating frequency, if the obtained EMI radiation frequency value and the EMI radiation amplitude value do not occur If it is changed, it is judged that the audio processing circuit subunit is not an EMI interference source circuit unit.
本实施例电视机的EMI定位装置,所述控制单元1012在接收到EMI电路子单元选择指令时,对选择的被测EMI电路子单元的工作状态、工作电路单元或工作频率进行控制,然后根据EMI检测仪对所述被测EMI电路子单元在不同工作状态、不同工作模块或不同工作频率时所检测到的EMI辐射值的变化情况,分析确定所述被测EMI电路子单元是否为电视机的EMI干扰源电路子单元。本实施例电视机的EMI定位装置具有EMI定位效率高和EMI定位准确性强的优点。In the EMI positioning apparatus of the television set of the embodiment, the control unit 1012 controls the working state, the working circuit unit or the operating frequency of the selected EMI circuit subunit when receiving the EMI circuit subunit selection command, and then according to The EMI detector analyzes whether the measured EMI circuit subunit is a TV set according to a change of the EMI radiation value detected by the EMI circuit subunit under different operating states, different working modules or different operating frequencies. EMI interference source circuit subunit. The EMI positioning device of the television set of this embodiment has the advantages of high EMI positioning efficiency and strong EMI positioning accuracy.
以上仅为本发明的优选实施例,并非因此限制本发明的专利范围,凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换,或直接或间接运用在其他相关的技术领域,均同理包括在本发明的专利保护范围内。The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the present invention and the drawings are directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention.

Claims (16)

  1. 一种电视机的EMI定位方法,其特征在于,所述电视机的EMI定位方法包括以下步骤: An EMI positioning method for a television set, characterized in that the EMI positioning method of the television set comprises the following steps:
    在接收到预设的EMI测试指令时,对电视机的各被测EMI电路子单元的工作状态、工作模块或工作频率进行控制;When receiving the preset EMI test command, controlling the working state, working module or working frequency of each measured EMI circuit subunit of the television;
    获取EMI检测仪对各被测EMI电路子单元在不同工作状态、不同工作模块或不同工作频率时所检测到的EMI辐射值,所述EMI辐射值包括EMI辐射频率值和EMI辐射幅度值;Obtaining an EMI radiation value detected by the EMI detector for each EMI circuit subunit under different working states, different working modules or different operating frequencies, the EMI radiation value including an EMI radiation frequency value and an EMI radiation amplitude value;
    根据获取到的EMI辐射值,分析确定EMI干扰源电路子单元。Based on the obtained EMI radiation value, the EMI interference source circuit sub-unit is determined by analysis.
  2. 如权利要求1所述的电视机的EMI定位方法,其特征在于,在接收到预设的EMI测试指令时,对电视机的各被测EMI电路子单元的工作状态、工作模块或工作频率进行控制之前还包括:The EMI positioning method for a television set according to claim 1, wherein when the preset EMI test command is received, the working state, the working module or the operating frequency of each measured EMI circuit subunit of the television is performed. Before the control also includes:
    根据是否包含开关电源电路或高频信号电路,对电视机进行模块划分,将电视机划分为若干EMI模块;According to whether the switching power supply circuit or the high-frequency signal circuit is included, the television is divided into modules, and the television is divided into several EMI modules;
    根据各所述EMI模块工作时是否含有开关信号或高频信号,将各所述EMI模块分别进行电路单元划分,将各所述EMI模块分别划分为若干EMI电路单元;According to whether each of the EMI modules contains a switching signal or a high-frequency signal, each of the EMI modules is separately divided into circuit units, and each of the EMI modules is divided into a plurality of EMI circuit units;
    根据各所述EMI电路单元工作时是否含有开关信号或高频信号,将各所述EMI电路单元分别进行子单元电路划分,将各所述EMI电路单元分别划分为若干被测EMI电路子单元。Each of the EMI circuit units is divided into sub-unit circuits according to whether each of the EMI circuit units includes a switching signal or a high-frequency signal, and each of the EMI circuit units is divided into a plurality of EMI circuit sub-units to be tested.
  3. 如权利要求2所述的电视机的EMI定位方法,其特征在于,根据是否包含开关电源电路或高频信号电路,对电视机进行模块划分,将电视机划分为以下EMI模块:电源板、机芯板和液晶显示屏。The EMI positioning method for a television set according to claim 2, wherein the television is divided into modules according to whether or not the switching power supply circuit or the high-frequency signal circuit is included, and the television is divided into the following EMI modules: a power board and a machine. Core board and LCD screen.
  4. 如权利要求3所述的电视机的EMI定位方法,其特征在于,根据所述机芯板工作时是否含有开关信号或高频信号,将所述机芯板划分为以下EMI电路单元:功放电路单元、网口电路单元、高频头电路单元、解码电路单元、SOC电路单元和供电电路单元。The EMI positioning method for a television set according to claim 3, wherein the movement board is divided into the following EMI circuit unit according to whether the movement board contains a switching signal or a high frequency signal: a power amplifier circuit Unit, network port circuit unit, tuner circuit unit, decoding circuit unit, SOC circuit unit, and power supply circuit unit.
  5. 如权利要求4所述的电视机的EMI定位方法,其特征在于,根据所述SOC电路单元工作时是否含有开关信号或高频信号,将所述SOC电路单元划分为以下被测EMI电路子单元:DDR控制电路子单元、信号输入电路子单元、信号输出电路子单元、音频处理电路子单元和视频处理电路子单元。The EMI positioning method for a television set according to claim 4, wherein the SOC circuit unit is divided into the following EMI circuit subunits to be tested according to whether the SOC circuit unit operates with a switching signal or a high frequency signal. : DDR control circuit subunit, signal input circuit subunit, signal output circuit subunit, audio processing circuit subunit, and video processing circuit subunit.
  6. 如权利要求2所述的电视机的EMI定位方法,其特征在于,在接收到预设的EMI测试指令时,对电视机的各被测EMI电路子单元的工作状态、工作模块或工作频率进行控制包括:The EMI positioning method for a television set according to claim 2, wherein when the preset EMI test command is received, the working state, the working module or the operating frequency of each measured EMI circuit subunit of the television set is performed. Controls include:
    在接收到预设的EMI测试指令时,调用并显示预设的EMI测试UI界面;所述EMI测试UI界面包含电视机的各所述EMI模块、与各所述EMI模块相对应的EMI电路单元以及与各EMI电路单元相对应的被测EMI电路子单元;Resetting and displaying a preset EMI test UI interface when receiving a preset EMI test command; the EMI test UI interface includes each of the EMI modules of the television set, and an EMI circuit unit corresponding to each of the EMI modules And a measured EMI circuit subunit corresponding to each EMI circuit unit;
    在接收到EMI模块选择指令时,调用并显示与选择的EMI模块相对应的各EMI电路单元;When receiving the EMI module selection instruction, calling and displaying each EMI circuit unit corresponding to the selected EMI module;
    在接收到EMI电路单元选择指令时,调用并显示与选择的EMI电路单元相对应的各EMI电路子单元;Retrieving and displaying each EMI circuit sub-unit corresponding to the selected EMI circuit unit upon receiving the EMI circuit unit selection instruction;
    在接收到EMI电路子单元选择指令时,对选择的被测EMI电路子单元的工作状态、工作电路单元或工作频率进行控制。When the EMI circuit subunit selection command is received, the operating state, the working circuit unit, or the operating frequency of the selected EMI circuit subunit is controlled.
  7. 如权利要求6所述的电视机的EMI定位方法,其特征在于,所述根据获取到的EMI辐射值,分析确定EMI干扰源电路子单元包括:The EMI positioning method of the television set according to claim 6, wherein the analyzing and determining the EMI interference source circuit sub-unit according to the acquired EMI radiation value comprises:
    当改变所述被测EMI电路子单元的工作状态时,若获取到的EMI辐射频率值发生了变化或获取到的EMI辐射幅度值发生了变化,则判断所述被测EMI电路子单元是EMI干扰源电路单元;When the operating state of the EMI circuit subunit to be tested is changed, if the obtained EMI radiation frequency value changes or the acquired EMI radiation amplitude value changes, it is determined that the measured EMI circuit subunit is EMI Interference source circuit unit;
    当改变所述被测EMI电路子单元的工作状态时,若获取到的EMI辐射频率值和EMI辐射幅度值均未发生变化,则判断所述被测EMI电路子单元不是EMI干扰源电路单元。When the operating state of the EMI circuit subunit to be tested is changed, if the obtained EMI radiation frequency value and the EMI radiation amplitude value are not changed, it is determined that the EMI circuit subunit to be tested is not an EMI interference source circuit unit.
  8. 如权利要求6所述的电视机的EMI定位方法,其特征在于,所述根据获取到的EMI辐射值,分析确定EMI干扰源电路子单元还包括:The EMI positioning method of the television set according to claim 6, wherein the analyzing and determining the EMI interference source circuit sub-unit according to the obtained EMI radiation value further comprises:
    当所述被测EMI电路子单元工作时,改变其工作模式或改变其工作频率后,若获取到的辐射频率值发生了变化或获取到的辐射幅度值发生了变化,则判断所述被测EMI电路子单元是EMI干扰源电路单元;When the EMI circuit subunit under test is changed, after changing its working mode or changing its operating frequency, if the obtained radiation frequency value changes or the acquired radiation amplitude value changes, the measured value is determined. The EMI circuit subunit is an EMI interference source circuit unit;
    当所述被测EMI电路子单元工作时,改变其工作模式或改变其工作频率后,若获取到的EMI辐射频率值和EMI辐射幅度值均未发生变化,则判断所述被测EMI电路子单元不是EMI干扰源电路单元;When the EMI circuit subunit under test is changed, after changing its working mode or changing its operating frequency, if the obtained EMI radiation frequency value and the EMI radiation amplitude value are not changed, the EMI circuit to be tested is judged. The unit is not an EMI interference source circuit unit;
    当所述被测EMI电路子单元不工作时,获取到EMI辐射值,则判断所述被测EMI电路子单元不是EMI干扰源电路单元。When the EMI radiation sub-unit is not in operation, the EMI radiation value is obtained, and then the EMI circuit sub-unit under test is determined not to be an EMI interference source circuit unit.
  9. 一种电视机的EMI定位装置,其特征在于,所述电视机的EMI定位装置包括:An EMI positioning device for a television set, characterized in that the EMI positioning device of the television set comprises:
    控制模块:用于在接收到预设的EMI测试指令时,对电视机的各被测EMI电路子单元的工作状态、工作模块或工作频率进行控制;Control module: for controlling the working state, working module or working frequency of each EMI circuit sub-unit of the television when receiving the preset EMI test command;
    EMI辐射值获取模块:用于获取EMI检测仪对各被测EMI电路子单元在不同工作状态、不同工作模块或不同工作频率时所检测到的EMI辐射值,所述EMI辐射值包括EMI辐射频率值和EMI辐射幅度值;EMI radiation value acquisition module: used to obtain the EMI radiation value detected by the EMI detector for each EMI circuit subunit under different working states, different working modules or different operating frequencies, the EMI radiation value including the EMI radiation frequency Value and EMI radiation amplitude value;
    分析模块:用于根据获取到的EMI辐射值,分析确定EMI干扰源电路子单元。The analysis module is configured to analyze and determine the EMI interference source circuit sub-unit according to the obtained EMI radiation value.
  10. 如权利要求9所述的电视机的EMI定位装置,其特征在于,所述的电视机的EMI定位装置还包括:The EMI positioning device for a television set according to claim 9, wherein the EMI positioning device of the television set further comprises:
    第一划分模块:用于根据是否包含开关电源电路或高频信号电路,对电视机进行模块划分,将电视机划分为若干EMI模块;The first dividing module is configured to perform module division on the television according to whether the switching power supply circuit or the high-frequency signal circuit is included, and divide the television into a plurality of EMI modules;
    第二划分模块:用于根据各所述EMI模块工作时是否含有开关信号或高频信号,将各所述EMI模块分别进行电路单元划分,将各所述EMI模块分别划分为若干EMI电路单元;a second dividing module: configured to divide each of the EMI modules into circuit units according to whether each of the EMI modules includes a switching signal or a high-frequency signal, and divide each of the EMI modules into a plurality of EMI circuit units;
    第三划分模块:用于根据各所述EMI电路单元工作时是否含有开关信号或高频信号,将各所述EMI电路单元分别进行子单元电路划分,将各所述EMI电路单元分别划分为若干被测EMI电路子单元。a third dividing module: configured to divide each of the EMI circuit units into sub-unit circuits according to whether each of the EMI circuit units includes a switching signal or a high-frequency signal, and divide each of the EMI circuit units into a plurality of EMI circuit subunit to be tested.
  11. 如权利要求10所述的电视机的EMI定位方法,其特征在于,所述第一划分模块具体用于:根据是否包含开关电源电路或高频信号电路,对电视机进行模块划分,将电视机划分为以下EMI模块:电源板、机芯板和液晶显示屏。The EMI positioning method of the television set according to claim 10, wherein the first dividing module is specifically configured to: perform module division on the television according to whether the switching power supply circuit or the high-frequency signal circuit is included, and set the television Divided into the following EMI modules: power board, movement board and LCD screen.
  12. 如权利要求11所述的电视机的EMI定位方法,其特征在于,所述第二划分模块具体用于:根据所述机芯板工作时是否含有开关信号或高频信号,将所述机芯板划分为以下EMI电路单元:功放电路单元、网口电路单元、高频头电路单元、解码电路单元、SOC电路单元和供电电路单元。The EMI positioning method of the television set according to claim 11, wherein the second dividing module is specifically configured to: according to whether the movement plate contains a switching signal or a high frequency signal when the movement plate is in operation, the movement is The board is divided into the following EMI circuit units: a power amplifier circuit unit, a network port circuit unit, a tuner circuit unit, a decoding circuit unit, a SOC circuit unit, and a power supply circuit unit.
  13. 如权利要求12所述的电视机的EMI定位方法,其特征在于,所述第三划分模块具体用于:根据所述SOC电路单元工作时是否含有开关信号或高频信号,将所述SOC电路单元划分为以下被测EMI电路子单元:DDR控制电路子单元、信号输入电路子单元、信号输出电路子单元、音频处理电路子单元和视频处理电路子单元。The EMI positioning method of a television set according to claim 12, wherein the third dividing module is specifically configured to: according to whether the SOC circuit unit operates with a switching signal or a high frequency signal, the SOC circuit The unit is divided into the following EMI circuit subunits to be tested: a DDR control circuit subunit, a signal input circuit subunit, a signal output circuit subunit, an audio processing circuit subunit, and a video processing circuit subunit.
  14. 如权利要求10所述的电视机的EMI定位装置,其特征在于,所述控制模块包括:The EMI positioning apparatus for a television set according to claim 10, wherein the control module comprises:
    UI界面调用单元:用于在接收到预设的EMI测试指令时,调用并显示预设的EMI测试UI界面;所述EMI测试UI界面包含电视机的各所述EMI模块、与各所述EMI模块相对应的EMI电路单元以及与各EMI电路单元相对应的被测EMI电路子单元;在接收到EMI模块选择指令时,调用并显示与选择的EMI模块相对应的各EMI电路单元;在接收到EMI电路单元选择指令时,调用并显示与选择的EMI电路单元相对应的各EMI电路子单元;The UI interface calling unit is configured to: call and display a preset EMI test UI interface when receiving the preset EMI test command; the EMI test UI interface includes each of the EMI modules of the television, and each of the EMI The EMI circuit unit corresponding to the module and the EMI circuit subunit corresponding to each EMI circuit unit; when receiving the EMI module selection instruction, calling and displaying each EMI circuit unit corresponding to the selected EMI module; Retrieving and displaying each EMI circuit sub-unit corresponding to the selected EMI circuit unit when the EMI circuit unit selects an instruction;
    控制单元:在接收到EMI电路子单元选择指令时,对选择的被测EMI电路子单元的工作状态、工作电路单元或工作频率进行控制。The control unit controls the working state, the working circuit unit or the operating frequency of the selected EMI circuit subunit when receiving the EMI circuit subunit selection command.
  15. 如权利要求14所述的电视机的EMI定位装置,其特征在于,所述分析模块还用于:The EMI positioning device for a television set according to claim 14, wherein the analysis module is further configured to:
    当改变所述被测EMI电路子单元的工作状态时,若获取到的EMI辐射频率值发生了变化或获取到的EMI辐射幅度值发生了变化,则判断所述被测EMI电路子单元是EMI干扰源电路单元;When the operating state of the EMI circuit subunit to be tested is changed, if the obtained EMI radiation frequency value changes or the acquired EMI radiation amplitude value changes, it is determined that the measured EMI circuit subunit is EMI Interference source circuit unit;
    当改变所述被测EMI电路子单元的工作状态时,若获取到的EMI辐射频率值和EMI辐射幅度值均未发生变化,则判断所述被测EMI电路子单元不是EMI干扰源电路单元。When the operating state of the EMI circuit subunit to be tested is changed, if the obtained EMI radiation frequency value and the EMI radiation amplitude value are not changed, it is determined that the EMI circuit subunit to be tested is not an EMI interference source circuit unit.
  16. 如权利要求14所述的电视机的EMI定位装置,其特征在于,所述分析模块还用于:The EMI positioning device for a television set according to claim 14, wherein the analysis module is further configured to:
    当所述被测EMI电路子单元工作时,改变其工作模式或改变其工作频率后,若获取到的辐射频率值发生了变化或获取到的辐射幅度值发生了变化,则判断所述被测EMI电路子单元是EMI干扰源电路单元;When the EMI circuit subunit under test is changed, after changing its working mode or changing its operating frequency, if the obtained radiation frequency value changes or the acquired radiation amplitude value changes, the measured value is determined. The EMI circuit subunit is an EMI interference source circuit unit;
    当所述被测EMI电路子单元工作时,改变其工作模式或改变其工作频率后,若获取到的EMI辐射频率值和EMI辐射幅度值均未发生变化,则判断所述被测EMI电路子单元不是EMI干扰源电路单元;When the EMI circuit subunit under test is changed, after changing its working mode or changing its operating frequency, if the obtained EMI radiation frequency value and the EMI radiation amplitude value are not changed, the EMI circuit to be tested is judged. The unit is not an EMI interference source circuit unit;
    当所述被测EMI电路子单元不工作时,获取到EMI辐射值,则判断所述被测EMI电路子单元不是EMI干扰源电路单元。When the EMI radiation sub-unit is not in operation, the EMI radiation value is obtained, and then the EMI circuit sub-unit under test is determined not to be an EMI interference source circuit unit.
PCT/CN2016/113453 2016-11-07 2016-12-30 Emi positioning method and device for television WO2018082186A1 (en)

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