CN207896968U - A kind of power line carrier detection device - Google Patents
A kind of power line carrier detection device Download PDFInfo
- Publication number
- CN207896968U CN207896968U CN201820340945.1U CN201820340945U CN207896968U CN 207896968 U CN207896968 U CN 207896968U CN 201820340945 U CN201820340945 U CN 201820340945U CN 207896968 U CN207896968 U CN 207896968U
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- China
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- main body
- power line
- circuit
- detection device
- power
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
A kind of power line carrier detection device, including main body, the lower part mounting knob of main body, the upper surface of main body is equipped with display screen, switch button, receiver, adjusting knob, receiver is located at the top of display screen, switch button is located at the lower part of receiver, adjusting knob is located at the left side of switch button, main body upper end is equipped with two connecting lines, the crocodile mouth wire clamp of connecting line other end installation insulation, the inside of main body includes by power circuit, termination power, signal receiving circuit, mixting circuit, audio amplifier circuit, loud speaker；Have the advantages that it is of low cost, be easy to carry about with one, be easy to operate, testing result intuitive display.
Description
Technical field
The utility model belongs to power line carrier communication testing equipment field, specifically a kind of power line carrier detection
Device.
Background technology
Power line carrier communication is to realize a kind of means of data transmission using existing power distribution network as transmission medium.
When transmission data, first by data signal modulation a to high frequency carrier, then it is coupled on power line by termination power, is realized
Data transmission.In power line carrier communication, due to being connected to a large amount of electrical equipments on power line, these equipment will produce high frequency
The high-frequency harmonic of harmonic wave, generation is superimposed upon above power circuit, and interference, certain unqualified or damage are generated to power line carrier communication
Bad equipment will produce especially strong interference, and carrier communication is caused to fail.In operation and maintenance, in order to search on power circuit
Certain interference source needs scene to be detected the carrier signal on power line, since carrier frequency is higher, can only use profession
Instrument such as oscilloscope, frequency spectrograph etc. is detected, special instrument have price is high, not portable, testing result show it is non-intuitive
Disadvantage.
Utility model content
The utility model provides a kind of power line carrier detection device, to solve defect in the prior art.
The utility model is achieved by the following technical programs：
A kind of power line carrier detection device, including main body, the lower part mounting knob of main body, the upper surface of main body, which is equipped with, to be shown
Display screen, switch button, receiver, adjusting knob, receiver are located at the top of display screen, and switch button is located at the lower part of receiver, adjust
Knob is located at the left side of switch button, and main body upper end is equipped with two connecting lines, the crocodile mouth line of connecting line other end installation insulation
Folder, the inside of main body includes by power circuit, termination power, signal receiving circuit, mixting circuit, audio amplifier circuit, raises one's voice
Device；Carrier signal is extracted on power line by termination power, is converted to audio frequency, and by amplifying circuit, loud speaker plays.
A kind of power line carrier detection device as described above, the top of the handle opens up lateral through groove, through groove
Positioned at the lower part of handle.
The rear portion of a kind of power line carrier detection device as described above, the main body is equipped with card slot, and card slot is located at master
The middle part of body.
The top of a kind of power line carrier detection device as described above, the main body opens up earphone jack, and earphone is inserted
Hole is located at the left side of two connecting lines.
The utility model has the advantages that：The utility model power line carrier signal detector uses and is converted to high frequency carrier
Audio simultaneously plays, this instrument need to be only connected to any point on power line by site operation personnel, can distinguish crocodile mouth wire clamp
The firewire and zero curve for clipping to power line, switch button is opened, the 220V power line access power circuits accessed by connecting line, together
When by termination power carrier signal is taken out on power line, carrier signal is converted to audio frequency, makes to raise one's voice by amplifying circuit
Device plays, and sound can then be come out by handsets, and the sound of this instrument broadcasting is monitored with ear, can differentiate carrier signal
Intensity, feature, to determine whether noise.With it is of low cost, be easy to carry about with one, easy to operate, testing result intuitive display
The advantages of.Can special instrument such as oscilloscope, sweep generator etc. be substituted in O＆M at the scene to be detected, overcome with this detector
Special instrument has that price is high, not portable, complicated for operation, testing result shows non-intuitive disadvantage.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is
Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram of the utility model；Fig. 2 is the rearview of Fig. 1；Fig. 3, Fig. 4, Fig. 5 are the utility model
The circuit diagram of embodiment one；Fig. 6 is the circuit diagram of the utility model embodiment two.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained without creative efforts belong to
The range of the utility model protection.
A kind of power line carrier detection device, as shown, including main body 1, the lower part mounting knob 2 of main body 1, main body 1
Upper surface be equipped with display screen 3, switch button 4, receiver 5, adjusting knob 11, receiver 5 is located at the top of display screen 3, and switch is pressed
Button 4 is located at the lower part of receiver 5, and adjusting knob 11 is located at the left side of switch button 4, and 1 upper end of main body is equipped with two connecting lines 6, and two
6 other end of root connecting line installs the crocodile mouth wire clamp 7 of insulation respectively, the inside of main body 1 include by power circuit, termination power,
Signal receiving circuit, mixting circuit, audio amplifier circuit, loud speaker；Carrier signal is extracted on power line by termination power, is turned
It is changed to audio frequency, by amplifying circuit, loud speaker plays.The utility model power line carrier signal detector is used high frequency
Wave conversion is audio and plays that this instrument need to be only connected to any point on power line by site operation personnel, can be by crocodile
Mouth wire clamp 7 clips to the firewire of power line respectively and zero curve opens switch button 4, the 220V power line access electricity of connecting line access
Source circuit, while carrier signal is taken out on power line by termination power, carrier signal is converted to audio frequency, by amplification electricity
Road makes loud speaker play, and sound can then be propagated from by receiver 5, and the sound of this instrument broadcasting, Ke Yifen are monitored with ear
Intensity, the feature for distinguishing carrier signal, to determine whether noise.With it is of low cost, be easy to carry about with one, it is easy to operate, detection knot
The advantages of fruit intuitive display.Special instrument such as oscilloscope, sweep generator etc. can be substituted in O＆M with this detector at the scene to carry out
Detection, overcoming special instrument has that price is high, not portable, complicated for operation, testing result shows non-intuitive disadvantage.
Specifically, as shown, the top of the handle 2 described in the present embodiment opens up lateral through groove 8, through groove 8 is located at
The lower part of handle 2.When detection device is not suitable for, it can be hooked on the wall or on other devices by through groove 8.
Specifically, as shown, the rear portion of the main body 1 described in the present embodiment is equipped with card slot 9, card slot 9 is located in main body 1
Portion.When crocodile mouth wire clamp 7 is not connected to power line, connecting line 6 can be blocked as in card slot 9, made it facilitate and being packed up.
Further, as shown, the top of the main body 1 described in the present embodiment opens up earphone jack 10, earphone jack 10
Positioned at the left side of connecting line 6.It can insert an earphone into earphone jack 10, external disturbance can be avoided, influence testing staff's
Judgment.
Embodiment one：The receiving circuit of signal：Carrier signal 270kHz on power line passes through C40, C41 coupling filters
Fall the alternating voltage that low frequency includes 50Hz, secondary is coupled a signal to by middle all primary sides.TVS1 plays pulse suppression herein
Effect inhibits the bursty interference pulse on power line and moment surge voltage, plays coupling middle week, transmits signal, simultaneously
Buffer action is also played, forceful electric power is isolated with signal circuit, is allowed to not altogether, improve signal anti-interference ability.Its inductance value is 33
UH, it and C40, C41 form series resonant circuit, and oscillation center frequency is 270kHz, to ensure that declining for garbage signal
Subtract, and useful carrier signal passes through.Carrier signal is taken out by the secondary of middle week, through R61 current limlitings, respectively by L11, C7
The series connection and antiresonant circuit frequency-selecting of 0 and L12, C71 composition, VD2, VD2 amplitude limit will by signal voltage clamper in 2V or so
Signal is sent to 16 foot of input terminal of the frequency mixer of signal processing analog front circuit MC3361, and MC3361 includes mixting circuit, limit
Width amplifying circuit and signal transformation circuit.1 foot is local oscillation signal input pin first, it sends out 185 by digital signal generation circuit
The antiresonant circuit of the digital signal of kHz standards, inductance L10, C69 composition forms the sinusoidal waveform of 185kHz, gives mixing electricity
Road provides this grade of oscillator signal, is mixed with the 270K signals of 16 feet, 455K mixed frequency signals is exported by 3 feet, through ceramic filter CF6
1 filtering, waveform further improves after filtering, is then fed into the 5 feet i.e. amplitude limiting amplifier circuit of next stage, the audio signal after recovery
It is exported by 9 feet, is sent into audio amplifier circuit, loud speaker plays.
As Fig. 3,4 parts are all identical before circuit, unlike as shown in fig. 6,1 foot first is local oscillation signal input pin,
It is sent out the digital signal of 275kHz standards, the antiresonant circuit shape of inductance L10, C69 composition by digital signal generation circuit
At the sinusoidal waveform of 275kHz, this grade of oscillator signal is provided to mixting circuit, is mixed with the 270kHz signals of 16 feet, it is defeated by 3 feet
Go out mixed frequency signal, filtered taking-up difference frequency signal obtains 5kHz audio signals after filtering, be sent into audio amplifier circuit, loud speaker
It plays.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：
It still can be with technical scheme described in the above embodiments is modified, or is carried out to which part technical characteristic etc.
With replacement；And these modifications or replacements, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (4)
1. a kind of power line carrier detection device, it is characterised in that：Including main body（1）, main body（1）Lower part mounting knob（2）,
Main body（1）Upper surface be equipped with display screen（3）, switch button（4）, receiver（5）, adjusting knob（11）, receiver（5）Positioned at display
Screen（3）Top, switch button（4）Positioned at receiver（5）Lower part, adjusting knob（11）Positioned at switch button（4）Left side, it is main
Body（1）Upper end sets two connecting lines（6）, connecting line（6）The crocodile mouth wire clamp of other end installation insulation（7）, main body（1）Inside
Including by power circuit, termination power, signal receiving circuit, mixting circuit, audio amplifier circuit, loud speaker；By termination power
Carrier signal is extracted on power line, is converted to audio frequency, and by amplifying circuit, loud speaker plays.
2. a kind of power line carrier detection device according to claim 1, it is characterised in that：The handle（2）It is upper
Portion opens up lateral through groove（8）, through groove（8）Positioned at handle（2）Lower part.
3. a kind of power line carrier detection device according to claim 1, it is characterised in that：The main body（1）After
Portion is equipped with card slot（9）, card slot（9）Positioned at main body（1）Middle part.
4. a kind of power line carrier detection device according to claim 1, it is characterised in that：The main body（1）It is upper
Portion opens up earphone jack（10）, earphone jack（10）Positioned at connecting line（6）Left side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820340945.1U CN207896968U (en) | 2018-03-13 | 2018-03-13 | A kind of power line carrier detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820340945.1U CN207896968U (en) | 2018-03-13 | 2018-03-13 | A kind of power line carrier detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207896968U true CN207896968U (en) | 2018-09-21 |
Family
ID=63541315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820340945.1U Expired - Fee Related CN207896968U (en) | 2018-03-13 | 2018-03-13 | A kind of power line carrier detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207896968U (en) |
-
2018
- 2018-03-13 CN CN201820340945.1U patent/CN207896968U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180921 Termination date: 20210313 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |