CN208207078U - Position the device and frequency spectrograph of noise source - Google Patents
Position the device and frequency spectrograph of noise source Download PDFInfo
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- CN208207078U CN208207078U CN201821670133.XU CN201821670133U CN208207078U CN 208207078 U CN208207078 U CN 208207078U CN 201821670133 U CN201821670133 U CN 201821670133U CN 208207078 U CN208207078 U CN 208207078U
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Abstract
The utility model relates to fields of measurement, more particularly, to a kind of device for positioning noise source, including frequency spectrograph.The frequency spectrograph includes noise source positioning key and display screen, signal processing module, main processing block and Display processing module.The noise source positioning key and display screen are set on the panel of the frequency spectrograph.The signal processing module, for receiving and handling electromagnetic signal.The main processing block connects the noise source positioning key and the signal processing module, the main processing block includes track module and scan module, the track module opens the first trace and the second trace of the electromagnetic signal for rendering in response to the noise source positioning key, and the scan module connects the track module and the mode for first trace and the second trace to be arranged.The Display processing module connects the track module and the display screen, for showing on the display screen first trace and the second trace.
Description
Technical field
The utility model relates to fields of measurement, more particularly, to a kind of device and frequency spectrograph for positioning noise source.
Background technique
According to electromagnetic compatibility (EMC) regulation of industry, electronic product needs to meet electromagnetic compatibility regulation, simultaneous to obtain electromagnetism
Hold certificate, reaches list marketing requirement.When electronic product is not able to satisfy the electromagnetic interference (EMI) regulation in electromagnetic compatibility regulation
When, positioning noise source is the important link of solution.
Frequency spectrograph and near field probes would generally be used by positioning noise source, utilize the field near field probes detection electronic product
By force, according to the principle stronger from noise source position more near field, so that it may find the accurate location of noise source.However, near field is visited
When head measures the field strength inside electronic product, the various settings in conjunction with frequency spectrograph and the holding mode of test data are needed,
It can confirm that the faint noise source position of field strength.These settings are related to cumbersome, grasp extremely difficult, and also result in
Testing time is very long.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of device and frequency spectrograph for positioning noise source, Ke Yitong
It crosses simply to operate and can quickly position noise source.
The utility model is to solve above-mentioned technical problem and the technical solution adopted is that a kind of device for positioning noise source, packet
Include frequency spectrograph.The frequency spectrograph includes noise source positioning key and display screen, signal processing module, main processing block and display processing
Module.The noise source positioning key and display screen are set on the panel of the frequency spectrograph.The signal processing module, for receiving
With processing electromagnetic signal.The main processing block connects the noise source positioning key and the signal processing module, the main place
Managing module includes track module and scan module, and the track module is opened for rendering in response to the noise source positioning key
The first trace and the second trace of the electromagnetic signal, the scan module connect the track module and for being arranged described the
The mode of one trace and the second trace.The Display processing module connects the track module and the display screen, is used for institute
It states the first trace and the second trace is shown on the display screen.
In an embodiment of the utility model, the device of above-mentioned positioning noise source further includes for detecting electromagnetic signal
Near field probes connect the signal processing module.
In an embodiment of the utility model, the device of above-mentioned positioning noise source further includes radio frequency amplifier, is connected to
Between the signal processing module and the near field probes.
In an embodiment of the utility model, the signal processing module successively includes sequentially connected filter, puts
Big device and analog-digital converter.
In an embodiment of the utility model, it is " maximum value holding " mould that first trace, which is arranged, in the scan module
Formula, and it is " clear write-in " mode that the second trace, which is arranged,.
In an embodiment of the utility model, the frequency spectrograph further includes frequency setting key and bandwidth setting key, described
Main processing block further includes frequency module and bandwidth module, and the frequency module connects the frequency setting key and the track mould
Block, the bandwidth module connect the bandwidth setting key and the track module.
The another aspect of the utility model proposes a kind of frequency spectrograph, including noise source positioning key and display screen, signal processing
Module, main processing block and Display processing module.The noise source positioning key and display screen are set on the panel of the frequency spectrograph.
The signal processing module, for receiving and handling electromagnetic signal.The main processing block connect the noise source positioning key and
The signal processing module, the main processing block include track module and scan module, and the track module is in response to described
Noise source positioning key and the first trace and the second trace for opening the electromagnetic signal for rendering, the scan module connect institute
State track module and the mode for first trace and the second trace to be arranged.The Display processing module connects the track
Module and the display screen, for showing on the display screen first trace and the second trace.
In an embodiment of the utility model, the signal processing module successively includes sequentially connected filter, puts
Big device and analog-digital converter.
In an embodiment of the utility model, it is " maximum value holding " mould that first trace, which is arranged, in the scan module
Formula, and it is " clear write-in " mode that the second trace, which is arranged,.
In an embodiment of the utility model, above-mentioned frequency spectrograph further includes frequency setting key and bandwidth setting key, described
Main processing block further includes frequency module and bandwidth module, and the frequency module connects the frequency setting key and the track mould
Block, the bandwidth module connect the bandwidth setting key and the track module.
A kind of noise source positioning device that the utility model is proposed by the way that noise source positioning key is arranged, and incorporates
Functional module inside frequency spectrograph significantly simplifies the number of operations of frequency spectrograph and the training of tester, further contracts
The time for having subtracted noise source positioning, accelerate noise source locating speed.
Detailed description of the invention
It is practical to this below in conjunction with attached drawing for the above objects, features, and advantages of the utility model can be clearer and more comprehensible
Novel specific embodiment elaborates, in which:
Fig. 1 is the use state diagram of the device of the positioning noise source of an embodiment of the present invention.
Fig. 2 is the panel arrangement schematic diagram of the device of positioning noise source shown in Fig. 1.
Fig. 3 is the circuit block diagram of the device of the positioning noise source of an embodiment of the present invention.
Fig. 4 is the use state diagram of the device of the positioning noise source of another embodiment of the utility model.
Specific embodiment
It is practical to this below in conjunction with attached drawing for the above objects, features, and advantages of the utility model can be clearer and more comprehensible
Novel specific embodiment elaborates.
Many details are explained in the following description in order to fully understand the utility model, but this is practical new
Type can also be implemented using other different from other way described herein, therefore the utility model is not by following public tool
The limitation of body embodiment.
As shown in the application and claims, unless context clearly prompts exceptional situation, " one ", "an" and/
Or the words such as "the" not refer in particular to odd number, may also comprise plural number.It is, in general, that term " includes " only prompts to include bright with "comprising"
Really mark the step of and element, and these steps and element do not constitute one it is exclusive enumerate, method or apparatus may also
The step of including other or element.
It is referred to as " on the other part " it should be appreciated that working as a component, " being connected to another component ", " is coupled in
When another component " or " contacting another component ", it can directly on another component, be connected or coupled to,
Or another component is contacted, or may exist insertion part.In contrast, when a component is referred to as " directly another
On a component ", " being directly connected in ", " being coupled directly to " or when " directly contact " another component, insertion part is not present.Together
Sample, when first component referred to as " is in electrical contact " or " being electrically coupled to " second component, in the first component and this second
There is the power path for allowing electric current flowing between part.The power path may include capacitor, the inductor of coupling and/or permission electricity
Other components of flowing, or even do not contacted directly between conductive component.
The device and frequency spectrograph of the embodiments of the present invention description positioning noise source, provide the function of fast noise source positioning
Energy.
Fig. 1 is the use state diagram of the device of the positioning noise source of an embodiment of the present invention.With reference to Fig. 1 institute
Show, the device 10 of the positioning noise source of the present embodiment may include frequency spectrograph 11, connection cables 12 and near field probes 13, frequency spectrograph 11
Near field probes 13 are connected by connection cables 12.Near field probes 13 can detect the field strength in electronic product, and will reflect field strength
Electromagnetic signal be supplied to frequency spectrograph 11 by connection cables 12.Frequency spectrograph 11 can carry out analog- and digital- place to electromagnetic signal
It is shown after reason.
Fig. 2 is the panel arrangement schematic diagram of the device of positioning noise source shown in Fig. 1.Refering to what is shown in Fig. 2, the face of frequency spectrograph 11
Plate 20 may include display control area 21, scan setting area 22, noise source positioning key 23, measurement functional areas 24, instrument setting area 25
And viewing area 26.Display control area 21, scan setting area 22, measurement functional areas 24 and instrument setting area 25 are for operator
The region of member's operation, including assortment of keys.Such as in that region may include frequency key and bandwidth key, it needs to visit for being arranged
The frequency range and resolution bandwidth of the signal (such as noise source) of survey.Noise source positioning key 23 is pressing independently of each region
Key, for rapidly carrying out the positioning of noise source.Viewing area 26 is equipped with display screen, the signal that can show that treated.
Fig. 3 is the circuit block diagram of the device of the positioning noise source of an embodiment of the present invention.Refering to what is shown in Fig. 3, this reality
Apply the frequency spectrograph of example circuit may include multiple key 311-313, signal processing module 320, main processing block 330, at display
Manage module 340 and display screen 350.Key 311-313 may include that noise source positioning key 311, frequency setting key 312 and bandwidth are set
Determine key 313.Signal processing module 320 can connect near field probes 13, for receiving and handling electromagnetic signal.Signal processing module
320 may include some common signal processing units, such as filter, amplifier and analog-digital converter etc., those skilled in the art
Member can according to need selection, not reinflated herein.Main processing block 330 connects key 311-313 and is pressed with receiving each key
Generated signal when lower.It is understood that in the present embodiment, each key can be connected to main place by key scan unit
Manage module 330.Key scan unit is responsible for parsing push button signalling and is supplied to main processing block 330.In each of the utility model
In embodiment, other than key 311-313, display control area 21 shown in Fig. 2, scan setting area 22, measurement 24 and of functional areas
The key in instrument setting area 25 all may be connected to main processing block 330.
Main processing block 330 may include track module 331, scan module 332, frequency module 333 and bandwidth module 334.
Track module 331 may be connected to signal processing module 320 and noise source positioning key 311, and track module 331 may be in response to noise source
Positioning key 311 and the first trace (Trace 1) and the second trace (Trace 2) for opening electromagnetic signal for rendering.Scan mould
Block 332 connects track module 331 and the mode for the first trace and the second trace to be arranged.Such as scan module 332 is settable
First trace is " maximum value holding " mode, and it is " clear write-in " mode that the second trace, which is arranged,.Mode is kept in maximum value
First trace can lock field strength maximum point, obtain the frequency and amplitude information of field strength maximum point.Understanding the second of write mode
Trace can reflect the field strength of the electromagnetic signal currently measured in real time.Track module 331, scan module 332, frequency module 333
It can be in one or more specific integrated circuits (ASIC), digital signal processor (DSP), digital signal with bandwidth module 334
Implement in the hardware circuits such as processing apparatus (DAPD).
333 rate of connections setting key 312 of frequency module and track module 331, frequency module 333 can be according to frequency setting keys
312 input sets the frequency for the electromagnetic signal that its trace is shown in track module 331.Similarly, bandwidth module
334 connecting band width setting keys 313 and track module 331, bandwidth module 334 can be according to the inputs of bandwidth setting key 313, to track
To show that the bandwidth of the electromagnetic signal of its trace is set in module 331.
Display processing module 340 connects track module 331 and display screen 350, for will from track module 331 first
Trace and the second trace are shown on display screen 350.
At work, tester need to only click the noise source positioning key 23 such as Fig. 2, device 10 to the device 10 of the present embodiment
Two traces, the first trace and the second trace can be opened simultaneously, and be respectively set the first trace be " maximum value holdings " mode with
Second trace is " clear write-in " mode.The frequency range and resolution belt for needing the noise source detected is arranged in tester again
It is wide.Later, the mobile near field probes 13 of tester scan the electromagnetic noise field strength in equipment under test, and the first trace is maximum field strength
Trace, when the field strength of the second trace and the first trace is identical, the position that near field probes 13 detect is the accurate position of noise source
It sets.
In contrast, when carrying out noise source positioning, number of operations is greater than 80 times previous frequency spectrograph, is related to number of keys
Up to 60, so that the testing time, at least over 10 minutes, engineer generally requires the time training ability more than at least one week
The frequency spectrograph operating procedure that positioning noise source can be grasped causes only a small number of engineers that can grasp frequency spectrograph operation in this way.
Therefore the device of the present embodiment is by setting noise source positioning key, and incorporates the function mould inside frequency spectrograph
Block, work needed for can greatly simplifying noise source positioning, reduces the requirement to tester and testing time.
Fig. 4 is the use state diagram of the device of the positioning noise source of another embodiment of the utility model.With reference to Fig. 4 institute
Show, the device 10a of the positioning noise source of the present embodiment may include that frequency spectrograph 11, connection cables 12, near field probes 13 and radio frequency are put
Big device 14.The difference of the present embodiment and previous embodiment is to introduce radio frequency amplifier 14, so that the noise detected is far high
It makes an uproar in the bottom of frequency spectrograph.Frequency spectrograph 11 is connected by connection cables 12 with radio frequency amplifier 14, and then near field probes 13 pass through company
Wiring cable 12 is connected with radio frequency amplifier 14.
Panel 20 identical with previous embodiment can be used in the frequency spectrograph 11 of the present embodiment, and structure is as shown in Figure 2.
The internal circuit block diagram of the frequency spectrograph 11 of the present embodiment can refer to shown in Fig. 3, and wherein signal processing module 320 connects
Radio frequency amplifier 14.
At work, tester need to only click the noise source positioning key 23 such as Fig. 2, device to the device 10a of the present embodiment
10a can open simultaneously two traces, the first trace and the second trace, and it is " maximum value holding " mode that the first trace, which is respectively set,
It is " clear write-in " mode with the second trace.The frequency range and resolution belt for needing the noise source detected is arranged in tester again
It is wide.Later, the mobile near field probes 13 of tester scan the electromagnetic noise field strength in equipment under test, through radio frequency amplifier 14 and even
By treated, electromagnetic noise field intensity information is sent into frequency spectrograph 11 to wiring cable 12.Electromagnetic noise passes through the first trace and the second trace
It is shown.First trace is maximum field strength trace, and when the field strength of the second trace and the first trace is identical, near field probes 13 are visited
The position of survey is the accurate location of noise source.
Except being clearly stated in non-claimed, the sequence of herein described processing element and sequence, digital alphabet use,
Or the use of other titles, it is not intended to limit the sequence of the application process and method.Although being shown in above-mentioned disclosure by various
Example discuss it is some it is now recognized that useful utility model embodiment, but it is to be understood that, such details only plays explanation
Purpose, appended claims are not limited in the embodiment disclosed, on the contrary, each claim is intended to cover and all meets this Shen
Please embodiment spirit and scope amendment and equivalent combinations.
The application has used particular words to describe embodiments herein.As " one embodiment ", " embodiment ",
And/or " some embodiments " means a certain feature relevant at least one embodiment of the application, structure or feature.Therefore, it answers
Emphasize and it is noted that " embodiment " or " one embodiment " that is referred to twice or repeatedly in this specification in different location or
" alternate embodiment " is not necessarily meant to refer to the same embodiment.In addition, certain in one or more embodiments of the application
Feature, structure or feature can carry out combination appropriate.
Similarly, it is noted that in order to simplify herein disclosed statement, to help real to one or more application
Apply the understanding of example, above in the description of the embodiment of the present application, sometimes by various features merger to one embodiment, attached drawing or
In descriptions thereof.But this disclosure method is not meant to mention in aspect ratio claim required for the application object
And feature it is more.In fact, the feature of embodiment will be less than whole features of the single embodiment of above-mentioned disclosure.
Although the utility model is described with reference to current specific embodiment, ordinary skill in the art
Personnel it should be appreciated that more than embodiment be intended merely to illustrate the utility model, be detached from the spirit of the present invention no
In the case of can also make various equivalent change or replacement, therefore, as long as to upper in the spirit of the utility model
State the variation of embodiment, modification will all be fallen in the range of following claims.
Claims (10)
1. a kind of device for positioning noise source, including frequency spectrograph, which is characterized in that the frequency spectrograph includes:
Noise source positioning key and display screen, on the panel of the frequency spectrograph；
Signal processing module, for receiving and handling electromagnetic signal；
Main processing block, connects the noise source positioning key and the signal processing module, and the main processing block includes track
Module and scan module, the track module open the electromagnetic signal for rendering in response to the noise source positioning key
First trace and the second trace, the scan module connect the track module and for first trace and the second mark to be arranged
The mode of line；And
Display processing module connects the track module and the display screen, for showing first trace and the second trace
Show on the display screen.
2. the device of positioning noise source as described in claim 1, which is characterized in that further include for detecting the close of electromagnetic signal
Field probe connects the signal processing module.
3. the device of positioning noise source as claimed in claim 2, which is characterized in that further include radio frequency amplifier, be connected to institute
It states between signal processing module and the near field probes.
4. as described in claim 1 positioning noise source device, which is characterized in that the signal processing module successively include according to
Filter, amplifier and the analog-digital converter of secondary connection.
5. the device of positioning noise source as described in claim 1, which is characterized in that first mark is arranged in the scan module
Line is that maximum value keeps mode, and it is to understand write mode that the second trace, which is arranged,.
6. the device of positioning noise source as described in claim 1, which is characterized in that the frequency spectrograph further includes frequency setting key
With bandwidth setting key, the main processing block further includes frequency module and bandwidth module, and the frequency module connects the frequency
Setting key and the track module, the bandwidth module connect the bandwidth setting key and the track module.
7. a kind of frequency spectrograph, characterized by comprising:
Noise source positioning key and display screen, on the panel of the frequency spectrograph；
Signal processing module, for receiving and handling electromagnetic signal；
Main processing block, connects the noise source positioning key and the signal processing module, and the main processing block includes track
Module and scan module, the track module open the electromagnetic signal for rendering in response to the noise source positioning key
First trace and the second trace, the scan module connect the track module and for first trace and the second mark to be arranged
The mode of line；And
Display processing module connects the track module and the display screen, for showing first trace and the second trace
Show on the display screen.
8. frequency spectrograph as claimed in claim 7, which is characterized in that the signal processing module successively includes sequentially connected filter
Wave device, amplifier and analog-digital converter.
9. frequency spectrograph as claimed in claim 7, which is characterized in that it is maximum value that first trace, which is arranged, in the scan module
Holding mode, and it is to understand write mode that the second trace, which is arranged,.
10. frequency spectrograph as claimed in claim 7, it is characterised in that further include frequency setting key and bandwidth setting key, the master
Processing module further includes frequency module and bandwidth module, and the frequency module connects the frequency setting key and the track mould
Block, the bandwidth module connect the bandwidth setting key and the track module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821670133.XU CN208207078U (en) | 2018-10-16 | 2018-10-16 | Position the device and frequency spectrograph of noise source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821670133.XU CN208207078U (en) | 2018-10-16 | 2018-10-16 | Position the device and frequency spectrograph of noise source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208207078U true CN208207078U (en) | 2018-12-07 |
Family
ID=64496776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821670133.XU Active CN208207078U (en) | 2018-10-16 | 2018-10-16 | Position the device and frequency spectrograph of noise source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208207078U (en) |
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2018
- 2018-10-16 CN CN201821670133.XU patent/CN208207078U/en active Active
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