CN105163570B - Electromagnetism interference method and apparatus - Google Patents
Electromagnetism interference method and apparatus Download PDFInfo
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- CN105163570B CN105163570B CN201510498059.2A CN201510498059A CN105163570B CN 105163570 B CN105163570 B CN 105163570B CN 201510498059 A CN201510498059 A CN 201510498059A CN 105163570 B CN105163570 B CN 105163570B
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Abstract
The invention discloses a kind of electromagnetism interference method and apparatus.Wherein, this method includes：The interference noise of objective chip is detected, wherein, the frequency of interference noise falls in the working frequency range of objective chip；And the fundamental clock frequency of adjustment objective chip is until the frequency of interference noise removes working frequency range, wherein, the frequency of interference noise is the frequency of interference module and the product of overtone order, interference module is that the module of interference noise is produced inside objective chip, and the frequency of interference module is frequency of the fundamental clock frequency of objective chip after frequency multiplication.The present invention solves the technical problem that correlation technique is adopted as improving hardware cost caused by chip sets radome solution chip electromagnetic interference problem.
Description
Technical field
The present invention relates to electronic applications, in particular to a kind of electromagnetism interference method and apparatus.
Background technology
With the fast development of electronic technology, the type and quantity of electronic chip are more and more.Electronic chip is in normal work
Make that electric current can be consumed in state, and disparate modules can produce electromagnetic interference under different operating frequency inside electronic chip, electromagnetism
Interference can produce the interference of radiation or conduction, have a strong impact on the performance of electronic chip.In order to improve the performance of electronic chip, need
Electromagnetic interference inside electronic chip is eliminated.Prior art, which is typically employed in outside electronic chip, sets up protective cover,
Change module placement, or eliminate electromagnetic interference phenomenon using the mode of wave filter, still, the above method improve hardware into
This, anti-jamming effectiveness can not be predicted, and eliminate the electromagnetic interference needs longer cycle, can not meet practical application request.
For correlation technique be adopted as chip set radome solve chip electromagnetic interference problem caused by improve hardware into
This problem of, effective solution is not yet proposed at present.
The content of the invention
The embodiments of the invention provide a kind of electromagnetism interference method and apparatus, and core is adopted as at least to solve correlation technique
Piece sets radome to solve the technical problem for improving hardware cost caused by chip electromagnetic interference problem.
One side according to embodiments of the present invention, there is provided a kind of electromagnetism interference method, including：Detect objective chip
Interference noise, wherein, the frequency of interference noise falls in the working frequency range of objective chip；And the basis of adjustment objective chip
Clock frequency until the frequency of interference noise removes working frequency range, wherein, the frequency of interference noise for interference module frequency with
The product of overtone order, interference module are that the module of interference noise is produced inside objective chip, and the frequency of interference module is target
Frequency of the fundamental clock frequency of chip after frequency multiplication.
Further, the fundamental clock frequency of objective chip is adjusted until detecting that the frequency of interference noise removes work frequency
Section includes：Reduce the fundamental clock frequency of objective chip until detecting that the frequency of interference noise is less than the starting frequency of working frequency range
Rate；Or the fundamental clock frequency of increase objective chip is until detect that the frequency of interference noise is more than the termination frequency of working frequency range
Rate.Further, after the interference noise of detection objective chip, the electromagnetism interference method also includes：Obtain first frequency
Difference and second frequency it is poor, wherein, first frequency difference for interference noise frequency and working frequency range initial frequency difference, second frequency
Rate difference for interference noise frequency and working frequency range termination frequency difference；Detect the size of first frequency difference and second frequency difference
Relation；And the fundamental clock frequency of objective chip is adjusted according to magnitude relationship.
Further, the fundamental clock frequency of objective chip is adjusted according to magnitude relationship to be included：It is less than in first frequency difference
In the case of second frequency difference, reduce the fundamental clock frequency of objective chip until detecting that the frequency of interference noise is less than work
The initial frequency of frequency range；In the case where first frequency difference is more than second frequency difference, increase the fundamental clock frequency of objective chip
Until detect that the frequency of interference noise is more than the termination frequency of working frequency range；It is and poor equal to second frequency in first frequency difference
In the case of, reduce the fundamental clock frequency of objective chip until detecting that the frequency of interference noise is less than the starting of working frequency range
Frequency, or increase the fundamental clock frequency of objective chip until detecting that the frequency of interference noise is more than the termination of working frequency range
Frequency.
Further, detecting the interference noise of objective chip includes：Detect the frequency of interference noise；And detection interference is made an uproar
The amplitude of sound, wherein, the fundamental clock frequency of objective chip is being adjusted until when the frequency of interference noise removes working frequency range, is being done
The amplitude for disturbing noise keeps constant.
Another aspect according to embodiments of the present invention, a kind of electromagnetic interference resistant device is additionally provided, including：First detection mould
Block, for detecting the interference noise of objective chip, wherein, the frequency of interference noise falls in the working frequency range of objective chip；With
And first adjusting module, for adjusting the fundamental clock frequency of objective chip until the frequency of interference noise removes working frequency range,
Wherein, the frequency of interference noise is the frequency of interference module and the product of overtone order, and interference module is to be produced inside objective chip
The module of raw interference noise, the frequency of interference module is frequency of the fundamental clock frequency of objective chip after frequency multiplication.
Further, the first adjusting module includes：Reduce module, for reduce objective chip fundamental clock frequency until
Detect that the frequency of interference noise is less than the initial frequency of working frequency range；Or increase module, for increasing the base of objective chip
Plinth clock frequency is until detect that the frequency of interference noise is more than the termination frequency of working frequency range.
Further, the electromagnetic interference resistant device also includes：Acquisition module, for obtaining first frequency difference and second frequency
Difference, wherein, first frequency difference for interference noise frequency and working frequency range initial frequency difference, second frequency difference makes an uproar for interference
The difference of the frequency of sound and the termination frequency of working frequency range；Second detection module, it is poor for detecting first frequency difference and second frequency
Magnitude relationship；And second adjusting module, the fundamental clock frequency of objective chip is adjusted according to magnitude relationship for adjusting.
Further, the second adjusting module includes：First adjustment submodule, for being less than second frequency in first frequency difference
In the case of difference, reduce the fundamental clock frequency of objective chip until detecting that the frequency of interference noise is less than rising for working frequency range
Beginning frequency；Second adjustment submodule, in the case of being more than second frequency difference in first frequency difference, increase the base of objective chip
Plinth clock frequency is until detect that the frequency of interference noise is more than the termination frequency of working frequency range；And the 3rd adjustment submodule,
In the case of being equal to second frequency difference in first frequency difference, reduce the fundamental clock frequency of objective chip until detecting dry
The frequency for disturbing noise is less than the initial frequency of working frequency range, or increases the fundamental clock frequency of objective chip until detecting dry
The frequency for disturbing noise is more than the termination frequency of working frequency range.
Further, first detection module includes：First detection sub-module, for detecting the frequency of interference noise；And
Second detection sub-module, for detecting the amplitude of interference noise, wherein, the fundamental clock frequency of objective chip is being adjusted until dry
When disturbing the frequency removal working frequency range of noise, the amplitude of interference noise keeps constant.
In embodiments of the present invention, production inside adjustment objective chip is realized by adjusting the fundamental clock frequency of objective chip
The frequency of the interference module of raw interference noise, because the frequency of interference noise is determined by the frequency harmonic number of interference module,
So the frequency of interference noise can be adjusted not in objective chip working frequency range by adjusting the fundamental clock frequency of objective chip
It is interior, to have reached the purpose for eliminating electromagnetic interference inside objective chip, it is achieved thereby that quickly and efficiently eliminating chip internal electricity
Magnetic disturbance, cost-effective technique effect, and then solve correlation technique and be adopted as chip setting radome solution chip electromagnetism
The technical problem of hardware cost is improved caused by interference problem.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the flow chart of electromagnetism interference method according to embodiments of the present invention；
Fig. 2 is TCON internal clocking configuration diagrams according to embodiments of the present invention；
Fig. 3 is the schematic diagram of objective chip interference noise according to embodiments of the present invention；
Fig. 4 is the schematic diagram of elimination electromagnetic interference according to embodiments of the present invention；And
Fig. 5 is the schematic diagram of electromagnetic interference resistant device according to embodiments of the present invention.
Embodiment
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, it should all belong to the model that the present invention protects
Enclose.
It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, "
Two " etc. be for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so use
Data can exchange in the appropriate case, so as to embodiments of the invention described herein can with except illustrating herein or
Order beyond those of description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that cover
Cover it is non-exclusive include, be not necessarily limited to for example, containing the process of series of steps or unit, method, system, product or equipment
Those steps or unit clearly listed, but may include not list clearly or for these processes, method, product
Or the intrinsic other steps of equipment or unit.
According to embodiments of the present invention, there is provided a kind of embodiment of the method for electromagnetism interference method, it is necessary to explanation,
The step of flow of accompanying drawing illustrates can perform in the computer system of such as one group computer executable instructions, also,
, in some cases, can be with different from shown in order execution herein although showing logical order in flow charts
The step of going out or describing.
Fig. 1 is the flow chart of electromagnetism interference method according to embodiments of the present invention, as shown in figure 1, the electromagnetism interference
Method comprises the following steps：
Step S102, the interference noise of objective chip is detected, wherein, the frequency of interference noise falls the work in objective chip
In frequency range；
Step S104, frequency removal working frequency range of the fundamental clock frequency up to interference noise of objective chip is adjusted, its
In, the frequency of interference noise is the frequency of interference module and the product of overtone order, and interference module is to be produced inside objective chip
The module of interference noise, the frequency of interference module is frequency of the fundamental clock frequency of objective chip after frequency multiplication.
By above-mentioned steps, can solve correlation technique and be adopted as chip and set radome to solve chip electromagnetic interference asking
The technical problem of hardware cost is improved caused by topic, quickly and efficiently elimination chip internal electromagnetic interference can be reached, and save
The technique effect of cost.
Objective chip in the embodiment is with Base clock module, and the frequency of Base clock module can be adjusted
Whole chip, wherein, Base clock module can be plug-in clock module or be embedded in the clock mould of chip internal
Block.The embodiment using timer/counter control register TCON as objective chip exemplified by resist electromagnetic interference method carry out
It is discussed in detail, it is necessary to illustrate, TCON is a kind of preferred embodiment of objective chip, and the objective chip in the embodiment is simultaneously
TCON one kind is not limited only to, it is every that there is Base clock module, and the chip that the frequency of Base clock module can be adjusted
Belong to objective chip.
The electromagnetism interference method in the embodiment of the present invention is described in detail by taking TCON as an example below：
In cellular network coverage, and employing wireless wide area network (Wireless Wide Area Network, referred to as
WWAN) technology causes terminal device, such as notebook computer or other equipment device to be anywhere connected to interconnection
Net, and then, the WWAN radio communication devices in terminal device can connect fast wireless network data.WWAN in terminal device
Radio communication device includes a variety of different network service standards, such as GSM, UMTS, UWB, GPS, CDMA2000, TD-
SCDMA, WCDMA, WiMax, LTE4G, bluetooth etc..Different network service standards are corresponding with different frequency separations.Eventually
One or more kinds of chips can be included in end equipment, wherein, the objective chip in terminal device can be operated in above-mentioned several
Any one in network service standard, the different network service standards of objective chip are corresponding with different working frequency range.
Objective chip in normal work inside can produce electromagnetic interference, interference noise can have a strong impact on the property of objective chip
Energy.Wherein, the frequency of objective chip interference noise and amplitude with the network service standard where objective chip it is different without
Together.Electromagnetic interference inside objective chip is related to the clock architecture inside objective chip, illustrates target by taking TCON as an example below
The generation principle of chip internal electromagnetic interference：
Fig. 2 is TCON internal clocking configuration diagrams according to embodiments of the present invention, as shown in Fig. 2 TCON includes receiving
Input/output module 20, Base clock module 22, phaselocked loop 24, TCON internal modules 26 and external interface 28.Wherein, receive
Input/output module 20 is used to receive data message from primary link；Base clock module 22 provides Base clock for TCON chips
Frequency, when the Base clock in Base clock module 22 is changed into the fundamental frequency of TCON internal modules 26 after being divided by frequency divider
Clock；After the base frequency clock is by phaselocked loop 24, phaselocked loop 24 can produce the clock of a variety of different frequencies, respectively TCON internal modes
Multiple submodule in block 26 provides clock；Include one or more submodule, each submodule in TCON internal modules 26
The clock frequency that block provides according to phaselocked loop 24 receives the data message from reception input/output module 20, and the data are believed
Breath is sent into terminal device by external interface 28；External interface 28 can also receive the clock frequency of the offer of phaselocked loop 24,
For receiving the data message from TCON internal modules 26 according to the clock frequency.It should be noted that during TCON basis
Clock frequency can be adjusted by external or embedded pulse width modulation module PWM, including increase or reduce Base clock
Frequency.
As shown in Fig. 2 after TCON works on power, the Base clock module 22 inside TCON is started working, Base clock
One local base frequency clock is produced by frequency divider, after the local base frequency clock delivers to phaselocked loop 24, phaselocked loop 24 produces multiple
Clock frequency needed for TCON internal modules 26.Data message is received from primary link during TCON normal works, the data message
TCON internal modules 26 are reached by receiving input/output module 20, are then transmitted by external interface 28 to terminal device.
TCON can consume electric current when working, and the different submodules in TCON internal modules 26 will produce electromagnetism and do at different frequencies
Disturb, electromagnetic interference (Electromagnetic Interference, referred to as EMI) can produce the interference of radiation or conduction.
Electromagnetic interference derives from harmonic wave (harmonic wave), and harmonic wave refers to frequency contained in electric current for the integral multiple of fundamental wave
Electricity.The reason for work clock of TCON internal modules 26 can be because of harmonic wave integer frequency is to very high frequency band, so as to influence
TCON performance.
The anti-interference electromagnetic method of the embodiment is after the network service standard of objective chip is determined, the work of objective chip
Making frequency range can be determined by network service standard, and the higher limit of the noise amplitude in working frequency range can also have network service system
Formula determines.When detecting noise frequency in objective chip working frequency range be present, and the amplitude of its noise is more than network service standard
Specified in higher limit when, the noise will interfere to objective chip.Therefore, in order to eliminate the interference inside objective chip
Noise, the anti-interference electromagnetic method of the embodiment employ the side that the frequency of interference noise is removed to objective chip working frequency range
Formula.The frequency and amplitude for detecting objective chip interference noise can be obtained by filter measurement, and Fig. 3 is implemented according to the present invention
The schematic diagram of the objective chip interference noise of example, as shown in figure 3, the working frequency range of objective chip is 2.4-2.5GHz, that is, is disturbed
Noise can not channel, otherwise will influence the performance of objective chip.Can be true according to the network service standard of objective chip
The noise amplitude in chip operation frequency range that sets the goal must not exceed -110dbm, and frequency be present in multiple noises shown in Fig. 3 falls
In 2.4-2.5GHz frequency ranges, and amplitude is higher than -110dbm noise, then the noise is the interference noise of objective chip, such as
The interference noise of 2.4GHz in Fig. 3.
The factor for forming the interference noise of objective chip falls in objective chip working frequency range including noise frequency；Noise width
Degree is higher than the higher limit in objective chip network service standard.Alternatively, detecting the interference noise of objective chip can include：Inspection
Survey the frequency of interference noise；And the amplitude of detection interference noise.
In order to eliminate the electromagnetic interference of objective chip, the electromagnetism interference method of the embodiment is by step S104, i.e., logical
The fundamental clock frequency of adjustment objective chip is crossed until the working frequency of the frequency removal objective chip of interference noise, disappears to reach
Except the purpose of electromagnetic interference inside objective chip, wherein, the fundamental clock frequency of objective chip is being adjusted up to interference noise
When frequency removes working frequency range, the amplitude of interference noise keeps constant.
The embodiment eliminates electromagnetic interference using by adjusting the fundamental clock frequency of objective chip, is due to following original
Cause：
First, as caused by the harmonic wave of disparate modules working frequency inside objective chip, i.e., objective chip interference noise is
Corresponding relation be present：Frequency × overtone order of frequency=interference module of interference noise, then want the frequency of adjustment interference noise
Rate can by adjusting the frequency of interference module, wherein, interference module is that the module of interference noise is produced inside objective chip.
Secondly, inside objective chip disparate modules frequency, including the frequency of interference module is basis by objective chip
, that is, corresponding relation be present in the frequency that clock frequency obtains after frequency multiplication：Frequency=fundamental clock frequency × n of interference module,
Wherein, n can be decimal, or integer.
It can be obtained by above-mentioned reason, adjustment fundamental clock frequency can adjust the frequency of interference module, and then adjust
The frequency of interference noise, the frequency of interference noise is fallen outside objective chip working frequency range, reach and eliminate electricity inside objective chip
The purpose of magnetic disturbance.
Alternatively, step S104 adjusts the fundamental clock frequency of objective chip until detecting that the frequency of interference noise removes
Working frequency range can include：Reduce the fundamental clock frequency of objective chip until detecting that the frequency of interference noise is less than work frequency
The initial frequency of section；Or the fundamental clock frequency of increase objective chip is until detect that the frequency of interference noise is more than work frequency
The termination frequency of section.
Reduce or the foundation of the fundamental clock frequency of increase objective chip is：The frequency distance objective chip of interference noise
The distance of two end points of working frequency range, i.e., when the frequency distance initial frequency of interference noise is nearer, then reduce Base clock frequency
Rate causes the frequency of interference noise to be moved to initial frequency direction until removing working frequency range；When the frequency distance of interference noise is whole
When only frequency is nearer, then increases fundamental clock frequency and the frequency of interference noise is moved until removing work to frequency direction is terminated
Make frequency range.
Alternatively, the distance of frequency distance objective chip two end points of working frequency range of interference noise can use difference on the frequency table
Show.The method of the electromagnetism interference of the embodiment can obtain the after interference noise is detected before adjustment fundamental clock frequency
One difference on the frequency and second frequency are poor, wherein, first frequency difference for interference noise frequency and working frequency range initial frequency difference,
Second frequency difference for interference noise frequency and working frequency range termination frequency difference；Detect first frequency difference and second frequency is poor
Magnitude relationship；And the fundamental clock frequency of objective chip is adjusted according to magnitude relationship.
Wherein, the fundamental clock frequency of objective chip is adjusted according to magnitude relationship to be included：It is less than in first frequency difference
In the case of second frequency difference, reduce the fundamental clock frequency of objective chip until detecting that the frequency of interference noise is less than work
The initial frequency of frequency range；In the case where first frequency difference is more than second frequency difference, increase the fundamental clock frequency of objective chip
Until detect that the frequency of interference noise is more than the termination frequency of working frequency range；It is and poor equal to second frequency in first frequency difference
In the case of, reduce the fundamental clock frequency of objective chip until detecting that the frequency of interference noise is less than the starting of working frequency range
Frequency, or increase the fundamental clock frequency of objective chip until detecting that the frequency of interference noise is more than the termination of working frequency range
Frequency.
Alternatively, increasing or reduce the fundamental clock frequency of objective chip can be realized by pulse width modulation module, should
Pulse width modulation module can be the plug-in module of objective chip or objective chip embedded module.Pass through pulse width modulation module
It can be as accurate as the size of the table fundamental clock frequency, thus it is possible to vary the frequency of objective chip internal interference module, and then change
The frequency of interference noise, realize the purpose for eliminating electromagnetic interference inside objective chip.
This embodiment offers the frequency of two ways adjustment interference noise, that is, increases or reduce fundamental clock frequency,
Flexible and changeable regulation can be realized.Fundamental clock frequency is adjusted according to the magnitude relationship of first frequency difference and second frequency difference,
It can ensure that the frequency shifts of interference noise are in small distance, interference noise displacement is smaller to be advantageous to not influence objective chip
Performance, ensure that objective chip is free from side effects.
By taking the interference noise shown in Fig. 3 as an example, from figure 3, it can be seen that the frequency distance working frequency range of interference noise
Initial frequency it is nearer, i.e. first frequency difference poor, the then mode by the frequency of interference noise to initial frequency that is less than second frequency
It is mobile until remove working frequency, as shown in figure 4, by reducing fundamental clock frequency, by the frequency of interference noise from can not be
Frequency range, i.e. the working channel of objective chip moved to outside useful frequency range, has been reached and has been eliminated electromagnetic interference inside objective chip
Purpose, wherein, Fig. 4 is the schematic diagram of elimination electromagnetic interference according to embodiments of the present invention.
Similarly, if the network service standard of objective chip changes, the interference noise of other working frequencies of objective chip
Eliminate can also use increase or reduction objective chip fundamental clock frequency by the way of, by increasing or reducing target core
The frequency of disparate modules (including interference module) moves to the frequency of interference noise outside the working frequency range of objective chip inside piece, with
Reach the purpose for eliminating electromagnetic interference inside objective chip.
The electromagnetism interference method of the embodiment is by adjusting frequency of the fundamental clock frequency by interference noise of objective chip
Rate removes the working frequency range of objective chip, and to realize the purpose for eliminating electromagnetic interference inside objective chip, this method is without increase
Hardware cost, eliminates that the time cycle of electromagnetic interference is shorter, and effect is quickly obvious, beneficial to product volume production.And can be neatly
The solution of complication system and the interference noise in each working frequency range is tackled, the side effect for eliminating interference noise is smaller.
According to embodiments of the present invention, a kind of device embodiment of electromagnetic interference resistant device is additionally provided, it is necessary to illustrate,
The electromagnetic interference resistant device of the embodiment is able to carry out the electromagnetism interference method of the embodiment of the present invention, and the embodiment of the present invention resists
Electromagnetic interference method can also perform in the electromagnetic interference resistant device of the embodiment.
Fig. 5 is the schematic diagram of electromagnetic interference resistant device according to embodiments of the present invention, as shown in figure 5, the electromagnetism interference
Device includes：The adjusting module 52 of first detection module 50 and first.
First detection module 50, for detecting the interference noise of objective chip, wherein, the frequency of interference noise falls in target
In the working frequency range of chip.
First adjusting module 52, for adjusting the fundamental clock frequency of objective chip until the frequency of interference noise removes work
Make frequency range, wherein, the frequency of interference noise is the frequency of interference module and the product of overtone order, and interference module is objective chip
Inside produces the module of interference noise, and the frequency of interference module is frequency of the fundamental clock frequency of objective chip after frequency multiplication
Rate.
Objective chip in the embodiment is with Base clock module, and the frequency of Base clock module can be adjusted
Whole chip, wherein, Base clock module can be plug-in clock module or be embedded in the clock mould of chip internal
Block.The embodiment using timer/counter control register TCON as objective chip exemplified by resist electromagnetic interference method carry out
It is discussed in detail, it is necessary to illustrate, TCON is a kind of preferred embodiment of objective chip, and the objective chip in the embodiment is simultaneously
TCON one kind is not limited only to, it is every that there is Base clock module, and the chip that the frequency of Base clock module can be adjusted
Belong to objective chip.
In cellular network coverage, and employing wireless wide area network (Wireless Wide Area Network, referred to as
WWAN) technology causes terminal device, such as notebook computer or other equipment device to be anywhere connected to interconnection
Net, and then, the WWAN radio communication devices in terminal device can connect fast wireless network data.WWAN in terminal device
Radio communication device includes a variety of different network service standards, such as GSM, UMTS, UWB, GPS, CDMA2000, TD-
SCDMA, WCDMA, WiMax, LTE4G, bluetooth etc..Different network service standards are corresponding with different frequency separations.Eventually
One or more kinds of chips can be included in end equipment, wherein, the objective chip in terminal device can be operated in above-mentioned several
Any one in network service standard, the different network service standards of objective chip are corresponding with different working frequency range.
Objective chip in normal work inside can produce electromagnetic interference, interference noise can have a strong impact on the property of objective chip
Energy.Wherein, the frequency of objective chip interference noise and amplitude with the network service standard where objective chip it is different without
Together.Electromagnetic interference inside objective chip is related to the clock architecture inside objective chip, illustrates target by taking TCON as an example below
The generation principle of chip internal electromagnetic interference：
As shown in Fig. 2 TCON includes receiving input/output module 20, Base clock module 22, phaselocked loop 24, inside TCON
Module 26 and external interface 28.Wherein, input/output module 20 is received to be used to receive data message from primary link；When basic
Clock module 22 provides fundamental clock frequency for TCON chips, after the Base clock in Base clock module 22 is divided by frequency divider
It is changed into the base frequency clock of TCON internal modules 26；After the base frequency clock is by phaselocked loop 24, phaselocked loop 24 can produce it is a variety of not
Multiple submodule in the clock of same frequency, respectively TCON internal modules 26 provides clock；TCON internal modules 26 include
There is one or more submodule, the clock frequency that each submodule provides according to phaselocked loop 24 is received from reception input and output
The data message of module 20, and the data message is sent into terminal device by external interface 28；External interface 28 may be used also
To receive the clock frequency of the offer of phaselocked loop 24, believe for receiving the data from TCON internal modules 26 according to the clock frequency
Breath.It should be noted that TCON fundamental clock frequency can be adjusted by external or embedded pulse width modulation module PWM
It is whole, including increase or reduce fundamental clock frequency.
As shown in Fig. 2 after TCON works on power, the Base clock module 22 inside TCON is started working, Base clock
One local base frequency clock is produced by frequency divider, after the local base frequency clock delivers to phaselocked loop 24, phaselocked loop 24 produces multiple
Clock frequency needed for TCON internal modules 26.Data message is received from primary link during TCON normal works, the data message
TCON internal modules 26 are reached by receiving input/output module 20, are then transmitted by external interface 28 to terminal device.
TCON can consume electric current when working, and the different submodules in TCON internal modules 26 will produce electromagnetism and do at different frequencies
Disturb, electromagnetic interference (Electromagnetic Interference, referred to as EMI) can produce the interference of radiation or conduction.
Electromagnetic interference derives from harmonic wave (harmonic wave), and harmonic wave refers to frequency contained in electric current for the integral multiple of fundamental wave
Electricity.The reason for work clock of TCON internal modules 26 can be because of harmonic wave integer frequency is to very high frequency band, so as to influence
TCON performance.
The working frequency range of objective chip can be determined by network service standard, and the upper limit of the noise amplitude in working frequency range
Value can also have the determination of network service standard.When detecting noise frequency in objective chip working frequency range be present, and its noise
Amplitude is more than specified in network service standard during higher limit, and the noise will interfere to objective chip.Therefore, in order to disappear
Except the interference noise inside objective chip, the embodiment employs removes objective chip working frequency range by the frequency of interference noise
Mode.The executive agent of first detection module 50 can be wave filter, that is, detect the frequency and amplitude of objective chip interference noise
It can be obtained by filter measurement.
The factor for forming the interference noise of objective chip falls in objective chip working frequency range including noise frequency；Noise width
Degree is higher than the higher limit in objective chip network service standard.Alternatively, first detection module 50 can include：First detection
Module, for detecting the frequency of interference noise；And second detection sub-module, for detecting the amplitude of interference noise, wherein,
The fundamental clock frequency of objective chip is adjusted until when the frequency of interference noise removes working frequency range, the amplitude of interference noise is kept
It is constant.
In order to eliminate the electromagnetic interference of objective chip, the embodiment adjusts the base of objective chip by the first adjusting module 52
Plinth clock frequency is until the frequency of interference noise removes the working frequency of objective chip, to reach electromagnetism inside elimination objective chip
The purpose of interference, wherein, when the fundamental clock frequency for adjusting objective chip removes working frequency range up to the frequency of interference noise,
The amplitude of interference noise keeps constant.
The embodiment eliminates electromagnetic interference using the fundamental clock frequency of the first adjusting module 52 adjustment objective chip, is
Due to the fact that：
First, as caused by the harmonic wave of disparate modules working frequency inside objective chip, i.e., objective chip interference noise is
Corresponding relation be present：Frequency × overtone order of frequency=interference module of interference noise, then want the frequency of adjustment interference noise
Rate can by adjusting the frequency of interference module, wherein, interference module is that the module of interference noise is produced inside objective chip.
Secondly, inside objective chip disparate modules frequency, including the frequency of interference module is basis by objective chip
, that is, corresponding relation be present in the frequency that clock frequency obtains after frequency multiplication：Frequency=fundamental clock frequency × n of interference module,
Wherein, n can be decimal, or integer.
It can be obtained by above-mentioned reason, adjustment fundamental clock frequency can adjust the frequency of interference module, and then adjust
The frequency of interference noise, the frequency of interference noise is fallen outside objective chip working frequency range, reach and eliminate electricity inside objective chip
The purpose of magnetic disturbance.
Alternatively, the first adjusting module 52 can include：Reduce module, for reducing the fundamental clock frequency of objective chip
Until detect that the frequency of interference noise is less than the initial frequency of working frequency range；Or increase module, for increasing objective chip
Fundamental clock frequency until detect interference noise frequency be more than working frequency range termination frequency.
Reduce or the foundation of the fundamental clock frequency of increase objective chip is：The frequency distance objective chip of interference noise
The distance of two end points of working frequency range, i.e., when the frequency distance initial frequency of interference noise is nearer, then reduce Base clock frequency
Rate causes the frequency of interference noise to be moved to initial frequency direction until removing working frequency range；When the frequency distance of interference noise is whole
When only frequency is nearer, then increases fundamental clock frequency and the frequency of interference noise is moved until removing work to frequency direction is terminated
Make frequency range.
Alternatively, the distance of frequency distance objective chip two end points of working frequency range of interference noise can use difference on the frequency table
Show.The electromagnetic interference resistant device of the embodiment can also include：Acquisition module, for obtaining first frequency difference and second frequency
Difference, wherein, first frequency difference for interference noise frequency and working frequency range initial frequency difference, second frequency difference makes an uproar for interference
The difference of the frequency of sound and the termination frequency of working frequency range；Second detection module, it is poor for detecting first frequency difference and second frequency
Magnitude relationship；And second adjusting module, the fundamental clock frequency of objective chip is adjusted according to magnitude relationship for adjusting.
Wherein, the second adjusting module can include：First adjustment submodule, for being less than second frequency in first frequency difference
In the case of difference, reduce the fundamental clock frequency of objective chip until detecting that the frequency of interference noise is less than rising for working frequency range
Beginning frequency；Second adjustment submodule, in the case of being more than second frequency difference in first frequency difference, increase the base of objective chip
Plinth clock frequency is until detect that the frequency of interference noise is more than the termination frequency of working frequency range；And the 3rd adjustment submodule,
In the case of being equal to second frequency difference in first frequency difference, reduce the fundamental clock frequency of objective chip until detecting dry
The frequency for disturbing noise is less than the initial frequency of working frequency range, or increases the fundamental clock frequency of objective chip until detecting dry
The frequency for disturbing noise is more than the termination frequency of working frequency range.
Alternatively, increasing or reduce the fundamental clock frequency of objective chip can be realized by pulse width modulation module, should
Pulse width modulation module can be the plug-in module of objective chip or objective chip embedded module.Pass through pulse width modulation module
It can be as accurate as the size of the table fundamental clock frequency, thus it is possible to vary the frequency of objective chip internal interference module, and then change
The frequency of interference noise, realize the purpose for eliminating electromagnetic interference inside objective chip.
The embodiment increases or reduced basis by increasing module or reducing the frequency of module adjustment interference noise
Clock frequency, it is possible to achieve flexible and changeable regulation.Basis is adjusted according to the magnitude relationship of first frequency difference and second frequency difference
Clock frequency, it is ensured that the frequency shifts of interference noise are in small distance, and interference noise displacement is smaller to be advantageous to not influence
The performance of objective chip, ensure that objective chip is free from side effects.
The electromagnetic interference resistant device of the embodiment detects the interference noise of objective chip using first detection module 50, utilizes
The fundamental clock frequency of first adjusting module 52 adjustment objective chip is until the frequency of interference noise removes working frequency range, to reach
Eliminate the effect of electromagnetic interference inside objective chip.By the electromagnetic interference resistant device of the embodiment, solve correlation technique and adopt
Set radome to improve the technical problem of hardware cost caused by solving chip electromagnetic interference problem with for chip, reached quick
Efficiently eliminate chip internal electromagnetic interference, and cost-effective technique effect.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
In the above embodiment of the present invention, the description to each embodiment all emphasizes particularly on different fields, and does not have in some embodiment
The part of detailed description, it may refer to the associated description of other embodiment.
In several embodiments provided herein, it should be understood that disclosed technology contents, others can be passed through
Mode is realized.Wherein, device embodiment described above is only schematical, such as the division of the unit, Ke Yiwei
A kind of division of logic function, can there is an other dividing mode when actually realizing, for example, multiple units or component can combine or
Person is desirably integrated into another system, or some features can be ignored, or does not perform.Another, shown or discussed is mutual
Between coupling or direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some interfaces, unit or module
Connect, can be electrical or other forms.
The unit illustrated as separating component can be or may not be physically separate, show as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On unit.Some or all of unit therein can be selected to realize the purpose of this embodiment scheme according to the actual needs.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated list
Member can both be realized in the form of hardware, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and is used as independent production marketing or use
When, it can be stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially
The part to be contributed in other words to prior art or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, including some instructions are causing a computer
Equipment (can be personal computer, server or network equipment etc.) perform each embodiment methods described of the present invention whole or
Part steps.And foregoing storage medium includes：USB flash disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. are various can be with store program codes
Medium.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (8)
- A kind of 1. electromagnetism interference method, it is characterised in that including：The interference noise of objective chip is detected, wherein, the frequency of the interference noise falls the working frequency range in the objective chip It is interior；AndThe frequency removal working frequency range of the fundamental clock frequency up to the interference noise of the objective chip is adjusted,Wherein, the frequency of the interference noise is the frequency of interference module and the product of overtone order, and the interference module is institute The module that the interference noise is produced inside objective chip is stated, when the frequency of the interference module is the basis of the objective chip Frequency of the clock frequency after frequency multiplication；Wherein, the frequency of the interference module=fundamental clock frequency × n, wherein, n is decimal；Wherein, after the interference noise of detection objective chip, methods described also includes：Obtain first frequency difference and second frequency Difference, wherein, first frequency difference for the frequency and the initial frequency of the working frequency range of the interference noise difference, described the Two difference on the frequencies are the difference of the frequency and the termination frequency of the working frequency range of the interference noise；Detect first frequency difference and The magnitude relationship of the second frequency difference；And the fundamental clock frequency of the objective chip is adjusted according to the magnitude relationship.
- 2. electromagnetism interference method according to claim 1, it is characterised in that adjust the Base clock of the objective chip Frequency is until detect that the frequency of the interference noise removes the working frequency range and included：Reduce the fundamental clock frequency of the objective chip until detecting that the frequency of the interference noise is less than work frequency The initial frequency of section；OrIncrease the fundamental clock frequency of the objective chip until detecting that the frequency of the interference noise is more than work frequency The termination frequency of section.
- 3. electromagnetism interference method according to claim 2, it is characterised in that the mesh is adjusted according to the magnitude relationship The fundamental clock frequency of mark chip includes：In the case where first frequency difference is less than the second frequency difference, reduce the fundamental clock frequency of the objective chip Until detect that the frequency of the interference noise is less than the initial frequency of the working frequency range；In the case where first frequency difference is more than the second frequency difference, increase the fundamental clock frequency of the objective chip Until detect that the frequency of the interference noise is more than the termination frequency of the working frequency range；AndIn the case where first frequency difference is equal to the second frequency difference, reduce the fundamental clock frequency of the objective chip Until detecting that the frequency of the interference noise is less than the initial frequency of the working frequency range, or increase the objective chip Fundamental clock frequency is until detect that the frequency of the interference noise is more than the termination frequency of the working frequency range.
- 4. electromagnetism interference method according to claim 1, it is characterised in thatThe interference noise of detection objective chip includes：Detect the frequency of the interference noise；And the detection interference noise Amplitude,Wherein, the fundamental clock frequency of the objective chip is being adjusted until the frequency of the interference noise removes the work frequency Duan Shi, the amplitude of the interference noise keep constant.
- A kind of 5. electromagnetic interference resistant device, it is characterised in that including：First detection module, for detecting the interference noise of objective chip, wherein, the frequency of the interference noise falls in the mesh In the working frequency range for marking chip；AndFirst adjusting module, for adjusting the fundamental clock frequency of the objective chip until the frequency of the interference noise removes The working frequency range,Wherein, the frequency of the interference noise is the frequency of interference module and the product of overtone order, and the interference module is institute The module that the interference noise is produced inside objective chip is stated, when the frequency of the interference module is the basis of the objective chip Frequency of the clock frequency after frequency multiplication；Wherein, the frequency of the interference module=fundamental clock frequency × n, wherein, n is decimal；Wherein, described device also includes：Acquisition module, it is poor for obtaining first frequency difference and second frequency, wherein, described first Difference on the frequency is the difference of the frequency and the initial frequency of the working frequency range of the interference noise, and the second frequency difference is described dry Disturb the difference of the frequency of noise and the termination frequency of the working frequency range；Second detection module, it is poor for detecting the first frequency With the magnitude relationship of second frequency difference；And second adjusting module, for adjusting according to magnitude relationship adjustment The fundamental clock frequency of objective chip.
- 6. electromagnetic interference resistant device according to claim 5, it is characterised in that first adjusting module includes：Reduce module, for reducing the fundamental clock frequency of the objective chip until detecting that the frequency of the interference noise is small In the initial frequency of the working frequency range；OrIncrease module, for increasing the fundamental clock frequency of the objective chip until detecting that the frequency of the interference noise is big In the termination frequency of the working frequency range.
- 7. electromagnetic interference resistant device according to claim 6, it is characterised in that second adjusting module includes：First adjustment submodule, in the case of being less than the second frequency difference in first frequency difference, reduces the mesh The fundamental clock frequency of chip is marked until detecting that the frequency of the interference noise is less than the initial frequency of the working frequency range；Second adjustment submodule, in the case of being more than the second frequency difference in first frequency difference, increases the mesh The fundamental clock frequency of chip is marked until detecting that the frequency of the interference noise is more than the termination frequency of the working frequency range；With And3rd adjustment submodule, in the case of being equal to the second frequency difference in first frequency difference, reduces the mesh The fundamental clock frequency of chip is marked until detecting that the frequency of the interference noise is less than the initial frequency of the working frequency range, or Person increases the fundamental clock frequency of the objective chip until detecting that the frequency of the interference noise is more than the working frequency range Termination frequency.
- 8. electromagnetic interference resistant device according to claim 5, it is characterised in thatThe first detection module includes：First detection sub-module, for detecting the frequency of the interference noise；And second inspection Submodule is surveyed, for detecting the amplitude of the interference noise,Wherein, the fundamental clock frequency of the objective chip is being adjusted until the frequency of the interference noise removes the work frequency Duan Shi, the amplitude of the interference noise keep constant.
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| CN110391853A (en) * | 2019-08-29 | 2019-10-29 | 珠海格力电器股份有限公司 | Bypassing method, storage medium and the mobile terminal of antenna for mobile phone interference |
| CN113324328B (en) * | 2021-05-11 | 2022-12-13 | Tcl空调器(中山)有限公司 | Method and device for determining shielding frequency of refrigeration equipment and storage medium |
| CN114985239B (en) * | 2022-05-30 | 2024-03-26 | 青岛海信医疗设备股份有限公司 | Ultrasonic anti-interference method and ultrasonic equipment |
| CN115811328A (en) * | 2022-11-24 | 2023-03-17 | 硅谷数模(苏州)半导体股份有限公司 | Harmonic parameter adjusting method and device, processor and electronic equipment |
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