CN109617622A - Reduce method, apparatus, equipment and the storage medium of frame type equipment electromagnetic interference - Google Patents
Reduce method, apparatus, equipment and the storage medium of frame type equipment electromagnetic interference Download PDFInfo
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- CN109617622A CN109617622A CN201811626389.5A CN201811626389A CN109617622A CN 109617622 A CN109617622 A CN 109617622A CN 201811626389 A CN201811626389 A CN 201811626389A CN 109617622 A CN109617622 A CN 109617622A
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- electromagnetic radiation
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B15/00—Suppression or limitation of noise or interference
- H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
Abstract
The application provides a kind of method, apparatus, frame type equipment and storage medium for reducing frame type equipment electromagnetic interference.It include detection device inside the frame type equipment, for detecting electromagnetic radiation energy, which comprises the electromagnetic radiation energy of notice detection device image sensor dies point；Judge whether the electromagnetic radiation energy is greater than preset energy limit value, wherein the energy limit value and Frequency point correspond；If it is, notice spread spectrum module carries out spread-spectrum processing to the corresponding clock signal of the target frequency point.By this method, spread-spectrum processing automatically can be carried out to the corresponding clock signal of Frequency point that electromagnetic radiation energy is more than energy limit value, to reduce the electromagnetic radiation energy of the Frequency point, to reduce the electromagnetic interference of equipment.
Description
Technical field
This application involves inhibit electromagnetic interference technical field more particularly to a kind of side for reducing frame type equipment electromagnetic interference
Method, device, frame type equipment and storage medium.
Background technique
Electro Magnetic Compatibility EMC (ElectroMagnetic Compatibility), refers to equipment or system in its electromagnetism ring
The operation that meets the requirements in border does not generate the ability of intolerable electromagnetic interference to the other equipment in its environment.Therefore, EMC
Requirement including two aspects: on the one hand refer to the electromagnetic interference EMI that equipment generates place environment in normal course of operation
(Electro Magnetic Interference) is no more than certain limit value；On the other hand refer to equipment to place environment
Present in electromagnetic interference there is a degree of immunity to interference, i.e. electromagnetic susceptibility.EMC certification is to entire electronics industry product
The certification that is detected of electromagnetic compatibility, when researching and developing equipment, the examination criteria that all equipment all must satisfy EMC can thrown
Enter market.EMI refers to circuit system by way of conducting or radiating, for the influence that peripheral circuit system generates, EMI meeting
Cause the reduction of circuit performance, if serious, may cause whole equipment disabler.Therefore EMI is that emphasis closes in EMC detection
Hardware design, the structure of one Xiang Zhibiao of note, EMI and equipment that equipment generates design and software design is closely related.
With internet, the accelerated development of cloud computing and big data industry, the application of large-scale frame type equipment is also increasingly
Extensively.And improving the EMC performance of frame type equipment, the examination criteria for complying with EMC is particularly critical.Frame type equipment is reduced at present
There are mainly two types of the methods of EMI: first is that increase the shield effectiveness of cabinet, but this method needs to add in structure design and factory
Working hour keeps the connection gap of cabinet as small as possible, prevents electromagnetic wave from coming out by cabinet gap radiation, and this method can be to processing
Required precision is very high, will increase design and processing cost, secondly, the connection gap for reducing equipment is also unfavorable for equipment cooling.
Another method is to reduce the transmission rate of mainboard inside chip, however, it will be apparent that this method is to sacrifice properties of product and come in fact
Existing, it is unworkable in the case where having strict demand to properties of product.
Summary of the invention
In view of this, this application provides a kind of method, apparatus of reduction frame type equipment electromagnetic interference, frame type equipment and
Storage medium.
Firstly, including inside the frame type equipment this application provides a kind of method for reducing frame type equipment electromagnetic interference
Detection device, for detecting electromagnetic radiation energy, which comprises
Notify the electromagnetic radiation energy of detection device image sensor dies point；
Judge whether the electromagnetic radiation energy is greater than preset energy limit value, wherein the energy limit value and Frequency point
It corresponds；
If it is, notice spread spectrum module carries out spread-spectrum processing to the corresponding clock signal of the target frequency point.
In one embodiment, notice spread spectrum module carries out spread-spectrum processing to the corresponding clock signal of the target frequency point
It specifically includes:
Calculate the energy differences of the electromagnetic radiation energy Yu the preset energy limit value；
Spectral bandwidth is determined according to the energy differences and target frequency point；
The spectral bandwidth and the Frequency point are sent to the spread spectrum module, so that the spread spectrum module is according to
Spectral bandwidth carries out spread-spectrum processing to the corresponding clock signal of the target frequency point.
In one embodiment, history electromagnetic radiation test result of the preset energy limit value based on the frame type equipment
It determines.
Secondly, this application provides a kind of device for reducing frame type equipment electromagnetic interference, described device includes:
Notification module, for notifying the electromagnetic radiation energy of detection device image sensor dies point；And described in the judgement
Electromagnetic radiation energy be greater than preset energy limit value when, then notify spread spectrum module to the corresponding clock signal of the target frequency point into
Row spread-spectrum processing；
Judgment module, for judging whether the electromagnetic radiation energy is greater than preset energy limit value.
In addition, this application provides a kind of frame type equipment, the equipment includes:
Detection device, for receiving the instruction of the processor and detecting electromagnetic radiation energy according to described instruction；
Memory, for storing executable computer program instructions；
Processor, for executing the computer program instructions to perform the steps of
Notify the electromagnetic radiation energy of detection device image sensor dies point；
Judge whether the electromagnetic radiation energy is greater than preset energy limit value, wherein the energy limit value and Frequency point
It corresponds；
If it is, notice spread spectrum module carries out spread-spectrum processing to the corresponding clock signal of the target frequency point.
Further, this application provides a kind of computer readable storage medium, on the computer readable storage medium
It is stored with computer program, following methods step is realized when the computer program is executed by processor:
Notify the electromagnetic radiation energy of detection device image sensor dies point；
Judge whether the electromagnetic radiation energy is greater than preset energy limit value, wherein the energy limit value and Frequency point
It corresponds；
If it is, notice spread spectrum module carries out spread-spectrum processing to the corresponding clock signal of the target frequency point.
The application can get it is following the utility model has the advantages that will test the electromagnetic radiation energy of the target frequency point that device detects with
The comparison of preset energy limit value, judges whether the electromagnetic radiation energy of target frequency point is greater than preset energy limit value, if it is, logical
Know that spread spectrum module carries out spread-spectrum processing to the corresponding clock signal of the target frequency point.It by this method, can be automatically
Spread-spectrum processing is carried out to the corresponding clock signal of Frequency point that electromagnetic radiation energy is more than energy limit value, to reduce the Frequency point
Electromagnetic radiation energy, to reduce the electromagnetic interference of equipment.
Detailed description of the invention
Fig. 1 is a kind of method flow diagram of reduction frame type equipment electromagnetic interference shown in one exemplary embodiment of the application；
Fig. 2 is a kind of schematic illustration of spread spectrum technology shown in one exemplary embodiment of the application；
Fig. 3 is schematic diagram of the CPU shown in one exemplary embodiment of the application to each module tranmitting data register signal；
Fig. 4 is a kind of method flow diagram of reduction frame type equipment electromagnetic interference shown in one exemplary embodiment of the application；
Fig. 5 a is that one exemplary embodiment of the application shows each Frequency point electromagnetic radiation energy spectrogram；
Fig. 5 b is that one exemplary embodiment of the application shows each Frequency point electromagnetic radiation energy spectrogram；
Fig. 6 is a kind of logical box of the device of reduction frame type equipment electromagnetic interference shown in one exemplary embodiment of the application
Figure；
Fig. 7 is a kind of logic diagram of frame type equipment shown in one exemplary embodiment of the application.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the application.
It is only to be not intended to be limiting the application merely for for the purpose of describing particular embodiments in term used in this application.
It is also intended in the application and the "an" of singular used in the attached claims, " described " and "the" including majority
Form, unless the context clearly indicates other meaning.It is also understood that term "and/or" used herein refers to and wraps
It may be combined containing one or more associated any or all of project listed.
It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the application
A little information should not necessarily be limited by these terms.These terms are only used to for same type of information being distinguished from each other out.For example, not departing from
In the case where the application range, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as
One information.Depending on context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determination ".
Electro Magnetic Compatibility EMC (ElectroMagnetic Compatibility), refers to equipment or system in its electromagnetism ring
The operation that meets the requirements in border does not generate the ability of intolerable electromagnetic interference to the other equipment in its environment.Therefore, EMC
Requirement including two aspects: on the one hand refer to the electromagnetic interference EMI that equipment generates place environment in normal course of operation
(Electro Magnetic Interference) is no more than certain limit value；On the other hand refer to equipment to place environment
Present in electromagnetic interference there is a degree of immunity to interference, i.e. electromagnetic susceptibility.EMC certification is to entire electronics industry product
The certification that is detected of electromagnetic compatibility, when researching and developing equipment, the examination criteria that all equipment all must satisfy EMC can thrown
Enter market.EMI refers to circuit system by way of conducting or radiating, for the influence that peripheral circuit system generates, EMI meeting
Cause the reduction of circuit performance, if serious, may cause whole equipment disabler.Therefore EMI is that emphasis closes in EMC detection
Hardware design, the structure of one Xiang Zhibiao of note, EMI and equipment that equipment generates design and software design is closely related.
With internet, the accelerated development of cloud computing and big data industry, the application of large-scale frame type equipment is also increasingly
Extensively.And improving the EMC performance of frame type equipment, the examination criteria for complying with EMC is particularly critical.Frame type equipment is reduced at present
There are mainly two types of the methods of EMI: first is that increase the shield effectiveness of cabinet, but this method needs to add in structure design and factory
Working hour keeps the connection gap of cabinet as small as possible, prevents electromagnetic wave from coming out by cabinet gap radiation, and this method can be to processing
Required precision is very high, will increase design and processing cost, secondly, the connection gap for reducing equipment is also unfavorable for equipment cooling.
Another method is to reduce the transmission rate of mainboard inside chip, however, it will be apparent that this method is to sacrifice properties of product and come in fact
Existing, it is unworkable in the case where having strict demand to properties of product.
To solve the above-mentioned problems, present applicant proposes a kind of reduces the side of installation electromagnetical interference based on spread spectrum technology
Method, the method are suitable for frame type equipment, include a detection device inside the frame type equipment, for detecting electromagnetic radiation energy
Amount, whether the electromagnetic radiation energy by each target frequency point inside detection device detection device is more than preset energy limit value, such as
Fruit is more than preset energy limit value, then automatically turns on spread spectrum module and carry out at spread spectrum to the corresponding clock signal of the target frequency point
Reason reduces equipment electricity to reduce the electromagnetic radiation energy of the target frequency point under the premise of guaranteeing that clock signal is normally functioning
Magnetic disturbance.Specifically, the method is as shown in Figure 1, comprising:
S101, the electromagnetic radiation energy for notifying detection device image sensor dies point；
S102, judge whether the electromagnetic radiation energy is greater than preset energy limit value；
S103, if it is, notice spread spectrum module to the corresponding clock signal of the target frequency point carry out spread-spectrum processing.
With the development of technology, the clock frequency of the digital signal in electronic equipment is higher and higher, and circuit system is for letter
Number the elements such as foundation, retention time, clock jitter propose increasingly higher demands.Clock signal is often circuit system intermediate frequency
The generation of the signal of rate highest and edge steepest, most EMI problems is related with clock signal.When the clock generator work on mainboard
When making, the peak value of pulse can be generated electromagnetic interference (EMI), and spread spectrum (SSC:Spread Spectrum Clocking) technology can be with
The electromagnetic interference that very good solution clock signal generates.Spread spectrum will focus within the scope of narrow-band by warbled means
The broad frequency range of power dissipation to setting reaches drop by reducing clock in the amplitude energy of fundamental frequency and odd harmonic frequencies
The purpose of low system electromagnetic radiation peak value.
Fig. 2 is an operation principle schematic diagram of SSC technology, and general dagital clock signal has very high QP (quasi-peak value)
Value, i.e., all energy all concentrate in very narrow frequency range, show as relatively high energy peak.It is easy on spectrogram
See has very high peak value in intermediate frequency, has lower peak value in odd harmonic position, SSC can be by increasing clock letter
The method of number bandwidth reduces peak energy, reduces the QP value of clock signal.
It is realized when the method for the reduction frame type equipment electromagnetic interference of the application based on above-mentioned spread spectrum technology, the frame of the application
The detection device of a designed, designed is added inside formula equipment, the detection device can detecte the electromagnetism spoke of each Frequency point
Penetrate energy.As shown in Figure 3 after frame type equipment, which is opened, to be run, CPU can give each component tranmitting data register signal in mainboard, than
Such as CPU needs to give DDR, PCIE, EMMC component tranmitting data register signal, these clock signals can correspond to different frequencies, and
These clock signals can generate electromagnetic interference.When equipment operation, an instruction, notice detection first can be sent to detection device
Device detects the electromagnetic radiation energy of frame type equipment internal object Frequency point, then will test the target frequency point of device return
Amount of electromagnetic radiation is compared with preset energy limit value, if the amount of electromagnetic radiation of target frequency point is greater than preset energy limit value,
It is exceeded to illustrate that the electromagnetic radiation energy of target frequency point is possible to meeting, therefore, it is desirable to spread spectrum module be notified to be directed to corresponding target frequency
The clock signal of rate point carries out spread-spectrum processing.Spread spectrum module can be a spread spectrum chip, this spread spectrum chip and clock chip
It is connected, can control and spread-spectrum processing is carried out to the clock signal that clock generator generates.
For example, as shown in Figure 3, it is assumed that CPU is 933MHZ to the frequency of the DDR clock signal DDR Clock sent,
Frequency to the PCIE clock signal PCIE Clock sent is 1200MHZ, the clock signal EMMC Clock sent to EMMC
Frequency be 600MHZ.When determining whether the carry out spread-spectrum processing to this Frequency point of 933MHZ, when reducing electromagnetic interference,
An instruction first can be sent to detection device, notice detection device detects the electromagnetic radiation energy of this frequency point of 933MHZ, so
After will test to obtain electromagnetic radiation energy magnitude compared with preset energy limit value, if electromagnetic radiation energy magnitude greater than energy limit
Value then notifies spread spectrum module to the clock signal progress spread-spectrum processing of this Frequency point of 933MHZ, and spread spectrum module then can be to equipment
Middle frequency is the clock signal of 933MHZ, for example DDR Clock carries out spread-spectrum processing, certainly, if detecting electromagnetic radiation energy
Magnitude is less than preset energy limit value, then without carrying out spread-spectrum processing to target frequency point.Similarly, for other Frequency points
It is detected using identical method, and determines whether to open the spread spectrum function of this Frequency point.
Due to that should guarantee the normal of the function of clock signal, also want when carrying out spread-spectrum processing to clock signal
Guarantee after carrying out spread-spectrum processing to clock signal, the electromagnetic radiation energy of the corresponding Frequency point of clock signal is lower than preset energy
Limit value.In one embodiment, notice spread spectrum module, which carries out spread-spectrum processing to clock signal, can use side as shown in Figure 4
Formula, comprising the following steps:
S401, the energy differences for calculating the electromagnetic radiation energy and the preset energy limit value；
S402, spectral bandwidth is determined based on the energy differences and target frequency point；
S403, the target frequency point and the spectral bandwidth are sent to the spread spectrum module, so as to the spread spectrum mould
Root tuber carries out spread-spectrum processing to the corresponding clock signal of the target frequency point according to the spectral bandwidth.
After the electromagnetic radiation energy for judging target frequency point is beyond preset energy limit value, then system knows needs to this
The corresponding clock signal of target frequency point carries out spread-spectrum processing, needs elder generation to the corresponding clock signal spread-spectrum processing of target frequency point
Determine the range of the bandwidth of frequency spectrum.The electromagnetic radiation energy and the preset target frequency point of target frequency point can first be calculated
The energy differences of energy limit value go determination should be by spectral bandwidth after clock signal spread spectrum further according to energy differences and target frequency point
To be how many, clock signal after spread spectrum is just without departing from preset energy limit value, frequency that then will target frequency point and be calculated
Bands of a spectrum width is sent to spread spectrum module, can be according to spectral bandwidth to target after spread spectrum module receives target frequency point and spectral bandwidth
The corresponding clock signal of Frequency point carries out spread-spectrum processing.
Preset energy limit value is in order to guarantee that the electromagnetic radiation energy magnitude of the Frequency point does not exceed standard, in order to avoid equipment
It can not be tested by electromagnetic radiation, different Frequency points has a corresponding energy limit value, this energy limit value can exist in advance
It is set in equipment.Energy limit value can be determined based on a large amount of history experimental data, in one embodiment, described default
Energy limit value can be determined based on the corresponding relationship of energy limit value difference value and the electromagnetism test result of frame type equipment.For example,
A numerical value first can be specified to the corresponding energy limit value of target frequency point, then in a device limit the energy of target frequency point
Value is set as this specified numerical value, determines the need for carrying out spread spectrum to clock signal so that equipment according to this specifies numerical value
Whether processing, i.e., need to open clock spread spectrum function.After setting, it is then turned on equipment, after allowing equipment to operate normally, by equipment
It is put into darkroom to be tested, obtains the result of electromagnetic radiation test.Then change the value of energy limit value, in the same way
Obtain electromagnetic radiation test as a result, the data of the electromagnetic radiation test result based on history, determine target frequency point
Optimal energy limit value.
In order to which a kind of method for reducing frame type equipment electromagnetic interference provided by the present application is explained further, have below with one
The embodiment of body is illustrated.
Frame type equipment is in electromagnetic environment, and when due to equipment operation, CPU can issue a large amount of clock signal, this
The frequency of a little clock signals is often relatively high, thus easily generates electromagnetic interference.In order to reduce the electromagnetic interference of frame type equipment,
Installed a detection device additional inside frame type equipment, for detecting electromagnetic radiation energy, be mounted in frame type equipment one from
The software program of row exploitation, runs the software program, frame type equipment can notify detection device to pre-set target frequency
The electromagnetic radiation energy of point is detected, according to detection device return as a result, judging the electromagnetic radiation energy of target frequency point
Whether preset energy limit value is exceeded, if it exceeds preset energy limit value, then calculate the electromagnetic radiation energy and preset with described
The energy differences of energy limit value, then spectral bandwidth is determined based on the energy differences and target frequency point；Then by target
Frequency point and spectral bandwidth are sent to spread spectrum module, after spread spectrum module receives target frequency point and spectral bandwidth, according to spectral band
Width carries out spread-spectrum processing to the corresponding clock signal of the target frequency point.It by this method, can be according to detection device
The difference of testing result and target frequency point electromagnetic radiation energy and energy limit value, automatically go be more than to electromagnetic radiation value
The corresponding clock signal of the Frequency point of energy limit value carries out spread-spectrum processing, the electromagnetic radiation energy of the Frequency point is reduced, to drop
The electromagnetic interference of low equipment.
Method provided by the present application achieves good effect, and as shown in figure 5a and 5b, Fig. 5 a is that frame type equipment does not use
The reduction electromagnetic interference method of the application measures the spectrogram of the corresponding electromagnetic radiation energy of each Frequency point, it can be seen that
There is more spike in spectrogram, and there are many places is more than specified value.Fig. 5 b is that frame type equipment uses reduction provided by the present application
The method of electromagnetic interference measures the spectrogram of the corresponding electromagnetic radiation energy of each Frequency point, it can be seen that each Frequency point pair
The electromagnetic radiation energy answered is less than specified value.As it can be seen that the method provided by the present application for reducing electromagnetic radiation energy can reach
To preferable effect.
Corresponding with a kind of aforementioned reduction embodiment of method of frame type equipment electromagnetic interference, present invention also provides one kind
The device for reducing frame type equipment electromagnetic interference, referring to FIG. 6, described device 600 includes:
Notification module 601, for notifying the electromagnetic radiation energy of detection device image sensor dies point；And judging
When stating electromagnetic radiation energy greater than preset energy limit value, then notify spread spectrum module to the corresponding clock signal of the target frequency point
Carry out spread-spectrum processing；
Judgment module 602, for judging whether the electromagnetic radiation energy is greater than preset energy limit value.
The function of each unit and the realization process of effect are specifically detailed in the above method and correspond to step in above-mentioned apparatus
Realization process, details are not described herein.
For device embodiment, since it corresponds essentially to embodiment of the method, so related place is referring to method reality
Apply the part explanation of example.The apparatus embodiments described above are merely exemplary, wherein described be used as separation unit
The unit of explanation may or may not be physically separated, and component shown as a unit can be or can also be with
It is not physical unit, it can it is in one place, or may be distributed over multiple network units.It can be according to actual
The purpose for needing to select some or all of the modules therein to realize application scheme.Those of ordinary skill in the art are not paying
Out in the case where creative work, it can understand and implement.
For hardware view, as shown in fig. 7, the device place for the reduction frame type equipment electromagnetic interference of this specification is set
A kind of standby hardware structure diagram, in addition to processor 701 shown in Fig. 7, network interface 704, detection device 705, memory 702 and
Except nonvolatile memory 703, the equipment in embodiment where device can also include usually other hardware, such as be responsible for processing
The forwarding chip etc. of message；The equipment is also possible to be distributed equipment from hardware configuration, may include multiple interfaces
Card, to carry out the extension of Message processing in hardware view.
The detection device is used to receive the instruction of the processor, and detects electromagnetic radiation energy according to described instruction,
The nonvolatile memory 703 is stored with for storing executable computer instruction, and processor 704 executes the computer
It is performed the steps of when instruction
Notify the electromagnetic radiation energy of detection device image sensor dies point；
Judge whether the electromagnetic radiation energy is greater than preset energy limit value, wherein the energy limit value and Frequency point
It corresponds；
If it is, notice spread spectrum module carries out spread-spectrum processing to the corresponding clock signal of the target frequency point.
The all or part of the application the part that contributes to existing technology or the technical solution can be produced with software
The form of product embodies, which is stored in a storage medium, including some instructions are used so that one
Platform terminal device executes all or part of the steps of each embodiment method of the application.And storage medium above-mentioned include: USB flash disk,
Mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access
Memory, RAM), the various media that can store program code such as magnetic or disk.
The foregoing is merely the preferred embodiments of the application, not to limit the application, all essences in the application
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the application protection.
Claims (6)
1. a kind of method for reducing frame type equipment electromagnetic interference, the frame type equipment inside includes detection device, for detecting electricity
Magnetic radiation energy, which comprises
Notify the electromagnetic radiation energy of detection device image sensor dies point；
Judge whether the electromagnetic radiation energy is greater than preset energy limit value, wherein the energy limit value and Frequency point are one by one
It is corresponding；
If it is, notice spread spectrum module carries out spread-spectrum processing to the corresponding clock signal of the target frequency point.
2. the method according to claim 1 for reducing frame type equipment electromagnetic interference, notice spread spectrum module is to the target frequency
The corresponding clock signal of rate point carries out spread-spectrum processing and specifically includes:
Calculate the energy differences of the electromagnetic radiation energy Yu the preset energy limit value；
Spectral bandwidth is determined according to the energy differences and target frequency point；
The spectral bandwidth and the Frequency point are sent to the spread spectrum module, so that the spread spectrum module is according to the frequency spectrum
Bandwidth carries out spread-spectrum processing to the corresponding clock signal of the target frequency point.
3. the method for reducing frame type equipment electromagnetic interference according to claim 1, the preset energy limit value is based on the frame and sets
Standby history electromagnetic radiation test result determines.
4. a kind of device for reducing frame type equipment electromagnetic interference, described device include:
Notification module, for notifying the electromagnetic radiation energy of detection device image sensor dies point；And judging the electromagnetism
When radiation energy is greater than preset energy limit value, then spread spectrum module is notified to open up the corresponding clock signal of the target frequency point
Frequency is handled；
Judgment module, for judging whether the electromagnetic radiation energy is greater than preset energy limit value.
5. a kind of frame type equipment, the equipment include:
Detection device, for receiving the instruction of the processor and detecting electromagnetic radiation energy according to described instruction；
Memory, for storing executable computer program instructions；
Processor realizes a kind of drop as described in any one of claim 1 to 3 for executing the computer program instructions
The method and step of low frame type equipment electromagnetic interference.
6. a kind of computer readable storage medium, computer program, the meter are stored on the computer readable storage medium
Calculation machine program realizes a kind of reduction frame type equipment electromagnetic interference as described in any one of claims 1 to 3 when being executed by processor
Method and step.
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| CN110047419A (en) * | 2019-04-30 | 2019-07-23 | 深圳市华星光电半导体显示技术有限公司 | Improve the driving device and its method of the electromagnetic radiation of GOA circuit |
| CN112306944A (en) * | 2020-11-06 | 2021-02-02 | 苏州浪潮智能科技有限公司 | Control method, device and program for reducing electromagnetic radiation of server complete machine |
| CN114020336A (en) * | 2021-09-30 | 2022-02-08 | 浪潮电子信息产业股份有限公司 | Method for shielding computer from electromagnetic interference and related assembly |
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| CN107040320A (en) * | 2017-05-18 | 2017-08-11 | 深圳市共进电子股份有限公司 | Internet accessing device |
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Application publication date: 20190412 |