CN107682045A - A kind of carrier signal measurement apparatus and measuring method - Google Patents
A kind of carrier signal measurement apparatus and measuring method Download PDFInfo
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- CN107682045A CN107682045A CN201711007223.0A CN201711007223A CN107682045A CN 107682045 A CN107682045 A CN 107682045A CN 201711007223 A CN201711007223 A CN 201711007223A CN 107682045 A CN107682045 A CN 107682045A
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- carrier signal
- measurement apparatus
- signal measurement
- resistor
- measuring instrument
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/46—Monitoring; Testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Measurement Of Current Or Voltage (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The present invention relates to a kind of carrier signal measurement apparatus and measuring method, the carrier signal measurement apparatus includes surge protective machine, voltage limiter, coupling transformer and matched attenuator in parallel successively, safety electric capacity is connected between voltage limiter and surge protective machine, such structure design is simple, cost is low, measuring method using carrier wave measurement apparatus measurement carrier signal is simple, and more preferably the carrier signal of carrier equipment in actual working environment can be measured, and lightning protection effect is good, it is easy to the test of carrier equipment.
Description
Technical field
The present invention relates to carrier communication field, and in particular to a kind of carrier signal measurement apparatus and measuring method.
Background technology
Power line carrier communication is a kind of communication mode using power line transmission data and media signal, utilizes power line
The environment to be communicated is gradually ripe, does not have to rewiring using power line carrier communication, can save substantial amounts of material resources manpower,
With good economic benefit and social benefit, but there is highly attenuating, high make an uproar in the transmission for carrying out carrier signal using power line
The problems such as sound and harmonic wave interference, therefore, it is necessary to field survey is carried out to carrier signal.It is also required in laboratory environments simultaneously
Performance test is carried out to carrier equipment.
At present, the laboratory measurement method of carrier signal includes as shown in figure 1, the measuring method uses following equipment
Wave filter 1 ', insulating power supply 2 ', artificial mains network LISN3 ', signal splitter 4 ', oscillograph 5 ' and carrier equipment 6 ' to be measured,
Wherein, wave filter 1 ', insulating power supply 2 ', artificial mains network 3 ' are used to provide the interference signal filtered out on civil power, artificial power supply
The signal output of network 3 ' filters out alternating voltage, and the carrier signal isolated inputs oscillograph 5 ' by signal splitter 4 '
It is interior, so that by the low pressure probe measurement carrier signal of oscillograph 5 ', although by the way that the arrangement achieves the survey to carrier signal
Examination, but the test device equipment is complicated, and be only applicable in the environment in laboratory, it can not be applied under actual field environment
Carrier signal is tested, in-convenience in use.
And for example Patent No. CN201520856318.X (Authorization Notice No. CN205070993U) Chinese utility model
Patent《A kind of Power Line Carrier Communication Module test device》, the test device include by power line connection High frequency filter
Device, isolating transformer, socket, one or more levels test module, device for adjusting and measuring, multicarrier receiver, oscillograph, spectrum analyzer；
Every group of test module includes carrier communication module test interface, attenuator and five groups of switches.Although the test device realizes load
The test of ripple signal, but the test device is complicated, in-convenience in use.
Therefore, it is necessary to be improved further to existing carrier signal measurement apparatus and measuring method.
The content of the invention
First technical problem to be solved by this invention is the present situation for prior art, there is provided it is a kind of it is simple in construction,
Measure convenient carrier signal measurement apparatus.
Second technical problem to be solved by this invention is the present situation for prior art, there is provided it is a kind of it is simple in construction,
Measure convenient carrier signal measuring method.
Technical scheme is used by the present invention solves above-mentioned first technical problem：A kind of carrier signal measurement apparatus,
It is characterized in that：Include surge protective machine, voltage limiter, coupling transformer and matched attenuator in parallel successively, the limit
Safety electric capacity is connected between depressor and surge protective machine, the safety capacitance connection on the zero line N of power supply, prevent by the surge
The both ends of shield device are connected with the live wire L and zero line N of power supply respectively, and one end of the voltage limiter is respectively while and coupling transformer
One end of primary winding is connected with one end of surge protective machine, and the other end of the voltage limiter is simultaneously former with coupling transformer respectively
The other end of winding is connected with one end of safety electric capacity, the input of the matched attenuator and the auxiliary winding of coupling transformer
It is connected, one end of the matched attenuator output end is connected with measuring instrument, the other end ground connection of output end.
Preferably, the matched attenuator includes first resistor, second resistance and 3rd resistor, the second resistance and
First end of the first end of 3rd resistor with the coupling transformer auxiliary winding is connected, and the second end of the second resistance connects
It is connected to the first end of first resistor and is connected on measuring instrument, the second end of the 3rd resistor is connected to the second of first resistor
Hold and be grounded, and second end of the second end of the 3rd resistor also with the coupling transformer auxiliary winding is connected.So,
The change of impedance can be preferably buffered with attenuator, and the carrier signal of coupled transformer can be decayed, is surveyed so as to convenient
Amount instrument is received and tested to carrier signal.
Preferably, the voltage limiter is voltage switch type Transient Suppression Diode TSS.In such manner, it is possible to effectively absorb wave
Gush power, damage of the element in protection circuit from surge pulse.
Preferably, the surge protective machine is piezo-resistance.So, the reliability of measurement apparatus is improved, improves lightning protection
Effect, and add security.
Preferably, the matched attenuator is that power attenuation amount is 20dB, and impedance is 50 Ω matched attenuator.
Preferably, BNC connector is provided with the carrier signal measurement apparatus, and passes through the BNC connector and the measurement
Instrument is connected.So, the connection of measurement apparatus and measuring instrument is easily facilitated.
Preferably, plug is provided with the carrier signal measurement apparatus, and passes through the plug and the live wire L of power supply and zero
Line N is connected.So, it is easy to measurement apparatus and the connection of power firestreak and zero line.
Further preferably, the plug is that two slotting plugs or three insert plugs.
Measuring instrument has multiple choices, it is preferable that the measuring instrument is oscillograph or spectrum analyzer.
Technical scheme is used by the present invention solves above-mentioned second technical problem：The above-mentioned carrier signal of one kind application is surveyed
Measure the measuring method of device.It is characterized in that：Include following steps：
(1) carrier equipment is connected with the live wire L and zero line N of power supply, and power taking can be carried out by power supply；
(2) one end of measurement apparatus is connected on the live wire L and zero line N of power supply, the other end is connected on measuring instrument, is carried
The signal of communication of wave device is transported on measuring instrument by the measurement apparatus, so as to realize the load to carrier equipment by measuring instrument
The measurement of ripple signal.
Compared with prior art, the advantage of the invention is that：The carrier signal measurement apparatus includes wave in parallel successively
Protector, voltage limiter, coupling transformer and matched attenuator are gushed, safety electricity is connected between voltage limiter and surge protective machine
To hold, such structure design is simple, and cost is low, and the measuring method using carrier wave measurement apparatus measurement carrier signal is simple, and
More preferably the carrier signal of carrier equipment in actual working environment can be measured, and lightning protection effect is good, is easy to carrier equipment
Test.
Brief description of the drawings
Fig. 1 is the structural representation of the carrier signal measurement apparatus of prior art；
Fig. 2 is the circuit theory diagrams of the carrier signal measurement apparatus of the embodiment of the present invention；
Fig. 3 is the structural representation of the embodiment of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing embodiment.
The carrier signal measurement apparatus for the embodiment of the present invention includes surge in parallel successively and prevented as shown in Figures 2 and 3
Device 1, voltage limiter 2, coupling transformer 3 and matched attenuator 4 are protected, peace is connected between the voltage limiter 2 and surge protective machine 1
Electric capacity 5 is advised, safety electric capacity 5 is connected on the zero line N of power supply, the both ends of the surge protective machine 1 live wire L and zero line with power supply respectively
N is connected, and one end of voltage limiter 2 is connected with one end of the primary winding of coupling transformer 3 and one end of surge protective machine 1 simultaneously respectively
Connecing, the other end of voltage limiter 2 is connected with the other end of the primary winding of coupling transformer 3 and one end of safety electric capacity 5 simultaneously respectively,
The input of matched attenuator 4 is connected with the auxiliary winding of coupling transformer 3, one end and the measuring instrument 6 of the output end of matched attenuator 4
It is connected, the other end ground connection of output end.Wherein, measuring instrument can take various forms, if measuring instrument 6 is oscillograph or frequency spectrum
Analyzer, in the present embodiment, measuring instrument 6 are oscillograph.
In the present embodiment, matched attenuator 4 includes first resistor R1, second resistance R2 and 3rd resistor R3, the second electricity
Hinder first end of the R2 and 3rd resistor R3 first end with the auxiliary winding of coupling transformer 3 to be connected, the second of second resistance R2
End is connected to first resistor R1 first end and is connected on measuring instrument 6, and 3rd resistor R3 the second end is connected to first resistor
R1 the second end is simultaneously grounded, and second end of 3rd resistor R3 the second end also with the auxiliary winding of coupling transformer 3 is connected.
In the present embodiment, voltage limiter 2 is voltage switch type Transient Suppression Diode TSS, the presence of voltage limiter 2, Neng Gouyou
The absorption surge power of effect, the damage of element in protection circuit from surge pulse；Surge protective machine 1 is piezo-resistance RV,
Passing through surge protective machine from the signal of power delivery, can effectively improve lightning protection effect, add security, improve simultaneously
The reliability of measurement apparatus.
In order to facilitate the transmission of carrier signal, in the present embodiment, matched attenuator 4 is that power attenuation amount is 20dB, impedance
For 50 Ω matched attenuator.So, the presence of matched attenuator, the change of impedance can be preferably buffered, and can be to through coupling
The carrier signal for closing transformer is decayed, and is received so as to being convenient for measuring instrument to carrier signal and is tested.
In order to facilitate the connection of carrier signal measurement apparatus and measuring instrument, in the present embodiment, in carrier signal measurement apparatus
BNC connector 7 is provided with, and is connected by the BNC connector 7 with the measuring instrument 6；In addition, set in carrier signal measurement apparatus
Plug 8 is equipped with, and is connected by the plug 8 with the live wire L and zero line N of power supply, so more facilitates carrier wave signal measurement to fill
Put the connection with power firestreak and zero line.Wherein, plug 8 can use two to insert plug or three slotting plugs.
As shown in figure 3, using the measuring method of above-mentioned carrier signal measurement apparatus, include following steps：
(1) carrier equipment 9 is connected with the live wire L and zero line N of power supply, and power taking can be carried out by power supply；
(2) one end of measurement apparatus is connected on the live wire L and zero line N of power supply by plug 8, the other end is connected to survey
Measure on instrument 6, the signal of communication of carrier equipment 9 is transported on measuring instrument 6 by the measurement apparatus, so as to be realized by measuring instrument 6
Measurement to the carrier signal of carrier equipment 9.Specifically, surge protective machine 1 of the carrier signal of carrier equipment through measurement apparatus,
Safety electric capacity 5, voltage limiter 2, coupling transformer 3 and matched attenuator 4, are transferred on oscillograph, carrier wave are set so as to realize
The measurement of standby carrier signal.
Power supply in said apparatus can use mains supply, can also be the pure electricity for having filtered out noise on power line
Source, use environment difference is, it is necessary to handle power supply, if said apparatus is used for field survey, power supply is mains supply；If
Said apparatus is used for laboratory carrier equipment performance test, then power supply is has filtered out power line after device, insulating power supply after filtering
The pure power supply of upper noise.
The structure design of the carrier signal measurement apparatus is simple, and cost is low, using carrier wave measurement apparatus measurement carrier wave letter
Number measuring method it is simple, and more preferably the carrier signal of carrier equipment in actual working environment can be measured, and lightning protection
Effect is good, is easy to the test of carrier equipment.
It the foregoing is only the preferred embodiment of the present invention, it is noted that for those of ordinary skills,
Under the premise of the principle of the present invention is not departed from, a variety of remodeling or improvement can be carried out to the present invention, these are regarded as the present invention
Protection domain within.
Claims (10)
- A kind of 1. carrier signal measurement apparatus, it is characterised in that：Include surge protective machine (1) in parallel successively, voltage limiter (2), coupling transformer (3) and matched attenuator (4), safety is connected between the voltage limiter (2) and surge protective machine (1) Electric capacity (5), the safety electric capacity (5) are connected on the zero line N of power supply, the both ends of the surge protective machine (1) respectively with power supply Live wire L be connected with zero line N, one end of the voltage limiter (2) respectively simultaneously with one end of coupling transformer (3) primary winding and One end of surge protective machine (1) is connected, the other end of the voltage limiter (2) respectively simultaneously with coupling transformer (3) primary winding The other end be connected with one end of safety electric capacity (5), the input of the matched attenuator (4) and coupling transformer (3) Auxiliary winding is connected, and one end of matched attenuator (4) output end is connected with measuring instrument (6), the other end ground connection of output end.
- 2. carrier signal measurement apparatus according to claim 1, it is characterised in that：The matched attenuator (4) includes First resistor R1, second resistance R2 and 3rd resistor R3, the second resistance R2 and 3rd resistor R3 first end with it is described The first end of coupling transformer (3) auxiliary winding is connected, and the second end of the second resistance R2 is connected to the of first resistor R1 One end is simultaneously connected on measuring instrument (6), and the second end of the 3rd resistor R3 is connected to first resistor R1 the second end and is grounded, And second end of the second end of the 3rd resistor R3 also with the coupling transformer (3) auxiliary winding is connected.
- 3. carrier signal measurement apparatus according to claim 1, it is characterised in that：The voltage limiter (2) is voltage switch Type Transient Suppression Diode TSS.
- 4. carrier signal measurement apparatus according to claim 1, it is characterised in that：The surge protective machine (1) is pressure-sensitive Resistance RV.
- 5. carrier signal measurement apparatus according to claim 1, it is characterised in that：The matched attenuator (4) is power Attenuation is 20dB, and impedance is 50 Ω matched attenuator.
- 6. carrier signal measurement apparatus according to claim 1, it is characterised in that：Set in the carrier signal measurement apparatus BNC connector (7) is equipped with, and is connected by the BNC connector (7) with the measuring instrument (6).
- 7. carrier signal measurement apparatus according to claim 1, it is characterised in that：Set in the carrier signal measurement apparatus Plug (8) is equipped with, and is connected by the plug (8) with the live wire L and zero line N of power supply.
- 8. carrier signal measurement apparatus according to claim 7, it is characterised in that：The plug (8) be two insert plugs or Three insert plug.
- 9. the carrier signal measurement apparatus according to any one of claim 1 to 8 claim, it is characterised in that：It is described Measuring instrument (6) is oscillograph or spectrum analyzer.
- 10. a kind of measuring method of carrier signal measurement apparatus using described in any one of claim 1 to 9 claim, It is characterized in that：Include following steps：(1) carrier equipment (9) is connected with the live wire L and zero line N of power supply, and power taking can be carried out by power supply；(2) one end of measurement apparatus is connected on the live wire L and zero line N of power supply, the other end is connected on measuring instrument (6), is carried The signal of communication of wave device (9) is transported on measuring instrument (6) by the measurement apparatus, so as to be realized by measuring instrument (6) to carrying The measurement of the carrier signal of wave device (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711007223.0A CN107682045B (en) | 2017-10-25 | 2017-10-25 | Carrier signal measuring device and measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711007223.0A CN107682045B (en) | 2017-10-25 | 2017-10-25 | Carrier signal measuring device and measuring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107682045A true CN107682045A (en) | 2018-02-09 |
| CN107682045B CN107682045B (en) | 2023-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711007223.0A Active CN107682045B (en) | 2017-10-25 | 2017-10-25 | Carrier signal measuring device and measuring method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001075775A2 (en) * | 2000-04-04 | 2001-10-11 | Contact Technology Systems, Inc. | Arc fault current interrupter testing device |
| CN102215035A (en) * | 2011-05-12 | 2011-10-12 | 青岛鼎信通讯有限公司 | Alternating current mains supply isolation zero crossing checking circuit combined with low-voltage power line carrier wave communication signal coupling |
| CN203193632U (en) * | 2013-04-23 | 2013-09-11 | 国家电网公司 | On-site low-voltage power line signal sampling and isolating apparatus |
| CN103944607A (en) * | 2014-04-14 | 2014-07-23 | 江苏益邦电力科技有限公司 | Low voltage power line carrier communication signal detection device |
| CN104836595A (en) * | 2015-05-26 | 2015-08-12 | 贵州电力试验研究院 | Power line carrier wave communication test program control attenuator and control method thereof |
| CN207460168U (en) * | 2017-10-25 | 2018-06-05 | 宁波三星医疗电气股份有限公司 | A kind of carrier signal measuring device |
-
2017
- 2017-10-25 CN CN201711007223.0A patent/CN107682045B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001075775A2 (en) * | 2000-04-04 | 2001-10-11 | Contact Technology Systems, Inc. | Arc fault current interrupter testing device |
| CN102215035A (en) * | 2011-05-12 | 2011-10-12 | 青岛鼎信通讯有限公司 | Alternating current mains supply isolation zero crossing checking circuit combined with low-voltage power line carrier wave communication signal coupling |
| CN203193632U (en) * | 2013-04-23 | 2013-09-11 | 国家电网公司 | On-site low-voltage power line signal sampling and isolating apparatus |
| CN103944607A (en) * | 2014-04-14 | 2014-07-23 | 江苏益邦电力科技有限公司 | Low voltage power line carrier communication signal detection device |
| CN104836595A (en) * | 2015-05-26 | 2015-08-12 | 贵州电力试验研究院 | Power line carrier wave communication test program control attenuator and control method thereof |
| CN207460168U (en) * | 2017-10-25 | 2018-06-05 | 宁波三星医疗电气股份有限公司 | A kind of carrier signal measuring device |
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| CN107682045B (en) | 2023-05-23 |
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