CN105551227A - Waveform signal source directly injected into power line - Google Patents
Waveform signal source directly injected into power line Download PDFInfo
- Publication number
- CN105551227A CN105551227A CN201510916660.9A CN201510916660A CN105551227A CN 105551227 A CN105551227 A CN 105551227A CN 201510916660 A CN201510916660 A CN 201510916660A CN 105551227 A CN105551227 A CN 105551227A
- Authority
- CN
- China
- Prior art keywords
- circuit
- signal
- waveform
- electric force
- signal source
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
- H04B2203/5412—Methods of transmitting or receiving signals via power distribution lines by modofying wave form of the power source
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Amplifiers (AREA)
Abstract
The invention discloses a waveform signal source directly injected into a power line. The waveform signal source comprises a control unit circuit, a waveform signal generator circuit, a power amplifier circuit and a power frequency isolation signal injection circuit, wherein the control unit circuit is used for controlling the waveform signal generator circuit to generate a signal waveform, receives the input signal of human-computer interaction and displays control information; the waveform signal generator circuit is used for receiving the control signal of the control unit circuit and generates a signal waveform with certain frequency, phase and amplitude under the control of the control unit circuit; the power amplifier circuit is used for receiving the output signal of the waveform signal generator circuit and carrying out distortionless amplification of the signal; and the powder frequency isolation signal injection circuit is used for injecting the output signal of the power amplifier circuit into the power line. The waveform signal source provided by the invention can conveniently, rapidly and effectively inject signals of different frequencies into a power line channel, reduces cost and an error rate, and improves working efficiency.
Description
Technical field
The present invention relates to multicarrier communication signal detection field, particularly a kind of waveform signal source of direct injection line of electric force.
Background technology
In low-voltage collecting meter reading communication system, be easily subject to the interference of the noise signal of various feature due to carrier signal, add that various consumer is linked into the extra factor such as impedance, decay that line of electric force produces, cause carrier communication and occur various abnormal occurrence.In order to detect the carrier communication channel at scene easily, analyze the decay size that the carrier signal of carrier channel to different frequency presents, the parameters such as impedance magnitude carry out quantitative measurement, be convenient to can solve the problems run in carrier communication process better, so need a kind of auxiliary criteria of random waveform signal source as measurement that directly can inject line of electric force.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of waveform signal source of direct injection line of electric force, can easily and fast, effectively by the signal injection of different frequency on line of electric force passage, reduce costs, reduce error rate, increase work efficiency.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A waveform signal source for direct injection line of electric force, comprises control module circuit, waveform generator circuit, power amplifier circuit and power frequency isolation signals injection circuit, described control module circuit is used for control waveform signal generator circuit and produces signal waveform, and receive the input signal of man-machine interaction, display control information, described waveform generator circuit is used for the control signal of reception control unit circuit, under the control of control module circuit, produce certain frequency, phase place, the signal waveform of amplitude, described power amplifier circuit is for receiving the output signal of waveform generator circuit, and this signal is carried out undistorted amplification, described power frequency isolation signals injection circuit is used for the output signal of power amplifier circuit to be injected into line of electric force.
According to such scheme, described control module circuit adopts the ATOMN2701.6GCPU processor of Intel.
According to such scheme, described waveform generator circuit adopts the fpga chip EP1C3T100 of ALTERA company.
According to such scheme, also comprise the AD9740AR chip for the digital signal of waveform generator circuit being converted to simulating signal.
According to such scheme, described power amplifier circuit adopts AD815 circuit.
According to such scheme, described power frequency isolation signals injection circuit comprises isolating transformer, and described isolating transformer is 1:1 transformer, and inductance value is 1mH.
Compared with prior art, the invention has the beneficial effects as follows: the signal of the assigned frequency produced this locality by integrated pattern, phase place, amplitude is directly injected on line of electric force, enormously simplify the test macro be made up of various discrete instrument and equipment, on-the-spot test human users is convenient, improve the work efficiency of tester, whole circuit adopts and is independently controlled by embedded system, and intermediate link, without the need to manual operation, decreases error probability.
Accompanying drawing explanation
Fig. 1 is apparatus of the present invention one-piece construction schematic diagram.
Input and output schematic diagram when Fig. 2 is control module circuit employing ATOMN2701.6GCPU processor in the present invention.
Input and output schematic diagram when Fig. 3 is waveform signal generator circuit employing AD9740AR chip in the present invention.
Input and output schematic diagram when Fig. 4 is intermediate power amplifier circuit of the present invention employing AD815 chip.
Embodiment
The object of this invention is to provide a kind of waveform signal source of direct injection line of electric force, primarily of control module circuit, waveform generator circuit, power amplifier circuit and power frequency isolation signals injection circuit composition, a certain frequency is produced by control module control circui waveform generator circuit, phase place, the signal waveform of amplitude, this signal is through power amplifier circuit, by power amplifier circuit, undistorted amplification is carried out to this signal, last by power frequency isolation signals injection circuit by this signal injection on low-voltage power line, complete the signal injection of carrier communication channel.
The waveform signal source of a kind of direct injection line of electric force of the present invention, as shown in Figure 1, comprises control module circuit, waveform generator circuit, power amplifier circuit and power frequency isolation signals injection circuit, described control module circuit is used for control waveform signal generator circuit and produces signal waveform, and receive the input signal of man-machine interaction, display control information, described waveform generator circuit is used for the control signal of reception control unit circuit, under the control of control module circuit, produce certain frequency, phase place, the signal waveform of amplitude, described power amplifier circuit is for receiving the output signal of waveform generator circuit, and this signal is carried out undistorted amplification, described power frequency isolation signals injection circuit is used for the output signal of power amplifier circuit to be injected into line of electric force.
As shown in Figure 2, described control module circuit adopts the ATOMN2701.6GCPU processor of Intel, 2G internal memory, 250G hard disk, have 232,485, the multiple input/output port such as USB, NET forms, and can meet the requirement of test for high real-time, large data capacity.The input of control module circuit adopts the human interface device (keyboard, mouse, display) of computing machine, user-friendly and operation, the output of control module circuit adopts the RS232 interface of standard, and this interface can facilitate, effectively control the waveform generator circuit of rear class.
Described waveform generator circuit adopts the fpga chip EP1C3T100 of ALTERA company, also comprise phase accumulator, waveform RAM, the stepping-in amount being arranged different phase accumulators by external bus carrys out regulation output frequency, write the change that different RAM data realize different wave, digital-to-analog conversion is realized finally by AD9740AR, the digital signal that FPGA exports is converted to analog waveform signal, converts digital signal to simulating signal and export rear stage to.AD9740AR has difference output ability, can effectively suppress common-mode signal to be disturbed by rear class operation amplifier circuit.Communication interface between EP1C3T100 chip and AD9740AR adopts 8 Parallel Interface Communications, EP1C3T100 chip for realizing calculating and the description of waveform signal, specifically as shown in Figure 3.
As shown in Figure 4, described power amplifier circuit adopts AD815 circuit, and AD815 chip is mainly used in the output signal of previous stage to carry out undistorted power amplification.AD815 is big current differential driving chip, and be made up of two big current, Broadband amplifiers, have very high bandwidth ,-three dB bandwidth can arrive 150M, can meet amplification needs during 9K ~ 500K signal testing completely.Chip is powered by+-15V, can provide the output voltage being greater than 20Vpp, improves accuracy and the dynamic range of test.
Described power frequency isolation signals injection circuit comprises isolating transformer, described isolating transformer is 1:1 transformer, and inductance value is 1mH, completes the signal injection of signal source generation on low-voltage power line, also for being isolated with line of electric force by system suspension, fully ensure the personal safety of user.The power frequency induction reactance of the elementary line bag of isolating transformer only has 0.3 ohms, plays first order isolation, play the effect of protection late-class circuit to power frequency.
Claims (6)
1. directly inject a waveform signal source for line of electric force, it is characterized in that, comprise control module circuit, waveform generator circuit, power amplifier circuit and power frequency isolation signals injection circuit, described control module circuit is used for control waveform signal generator circuit and produces signal waveform, and receive the input signal of man-machine interaction, display control information, described waveform generator circuit is used for the control signal of reception control unit circuit, under the control of control module circuit, produce certain frequency, phase place, the signal waveform of amplitude, described power amplifier circuit is for receiving the output signal of waveform generator circuit, and this signal is carried out undistorted amplification, described power frequency isolation signals injection circuit is used for the output signal of power amplifier circuit to be injected into line of electric force.
2. the waveform signal source of a kind of direct injection line of electric force as claimed in claim 1, is characterized in that, described control module circuit adopts the ATOMN2701.6GCPU processor of Intel Company.
3. the waveform signal source of a kind of direct injection line of electric force as claimed in claim 1, is characterized in that, described waveform generator circuit adopts the fpga chip EP1C3T100 of ALTERA company.
4. the waveform signal source of a kind of direct injection line of electric force as claimed in claim 3, is characterized in that, also comprises the AD9740AR chip for the digital signal of waveform generator circuit being converted to simulating signal.
5. the waveform signal source of a kind of direct injection line of electric force as claimed in claim 1, is characterized in that, described power amplifier circuit adopts AD815 circuit.
6. the waveform signal source of the direct injection line of electric force as described in any one of claim 1 to 5, is characterized in that, described power frequency isolation signals injection circuit comprises isolating transformer, and described isolating transformer is 1:1 transformer, and inductance value is 1mH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510916660.9A CN105551227A (en) | 2015-12-10 | 2015-12-10 | Waveform signal source directly injected into power line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510916660.9A CN105551227A (en) | 2015-12-10 | 2015-12-10 | Waveform signal source directly injected into power line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105551227A true CN105551227A (en) | 2016-05-04 |
Family
ID=55830397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510916660.9A Pending CN105551227A (en) | 2015-12-10 | 2015-12-10 | Waveform signal source directly injected into power line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105551227A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116505976A (en) * | 2023-06-29 | 2023-07-28 | 无锡量子感知研究所 | Data transmission parameter determining method and device and electronic equipment |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060279265A1 (en) * | 2005-06-09 | 2006-12-14 | Mitsubishi Denki Kabushiki Kaisha | Communication system for communications carried over power lines |
| CN1976245A (en) * | 2006-12-07 | 2007-06-06 | 赵湖滨 | Capacity coupler used for intermediate voltage power line carrier communication |
| CN201340652Y (en) * | 2009-01-22 | 2009-11-04 | 南京信息职业技术学院 | Device for low-voltage power line carrier meter reading |
| KR20090121958A (en) * | 2008-05-23 | 2009-11-26 | 한국전기연구원 | Standby power reduction method of smps with power line communication |
| CN201359635Y (en) * | 2009-03-12 | 2009-12-09 | 上海琦峰验电器有限公司 | High voltage electroscope-used power frequency sine wave signal generator |
| CN102655422A (en) * | 2011-03-02 | 2012-09-05 | 华北电力科学研究院有限责任公司 | Test system for low-voltage power carrier communication equipment |
| CN102868219A (en) * | 2012-09-03 | 2013-01-09 | 山西潞安环保能源开发股份有限公司 | Intelligent electric carrier classification locking device |
| CN103001666A (en) * | 2012-11-26 | 2013-03-27 | 中国电力科学研究院 | Low-voltage power line carrier channel attenuation characteristic test system and control method thereof |
| WO2013096134A1 (en) * | 2011-12-22 | 2013-06-27 | Landis+Gyr Technologies, Llc | Digital signal processing for plc communications having communication frequencies |
| CN203813780U (en) * | 2014-05-13 | 2014-09-03 | 郭广宇 | Power line carrier wave communication device |
| CN104333399A (en) * | 2014-10-30 | 2015-02-04 | 国家电网公司 | System for testing low-voltage power line carrier communication |
| CN104569706A (en) * | 2013-10-15 | 2015-04-29 | 广西鑫百纳电气有限公司 | Signal injection adjusting device and signal injection device |
| CN205230328U (en) * | 2015-12-10 | 2016-05-11 | 国网四川省电力公司电力科学研究院 | Directly pour into wave form signal source of power line into |
-
2015
- 2015-12-10 CN CN201510916660.9A patent/CN105551227A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060279265A1 (en) * | 2005-06-09 | 2006-12-14 | Mitsubishi Denki Kabushiki Kaisha | Communication system for communications carried over power lines |
| CN1976245A (en) * | 2006-12-07 | 2007-06-06 | 赵湖滨 | Capacity coupler used for intermediate voltage power line carrier communication |
| KR20090121958A (en) * | 2008-05-23 | 2009-11-26 | 한국전기연구원 | Standby power reduction method of smps with power line communication |
| CN201340652Y (en) * | 2009-01-22 | 2009-11-04 | 南京信息职业技术学院 | Device for low-voltage power line carrier meter reading |
| CN201359635Y (en) * | 2009-03-12 | 2009-12-09 | 上海琦峰验电器有限公司 | High voltage electroscope-used power frequency sine wave signal generator |
| CN102655422A (en) * | 2011-03-02 | 2012-09-05 | 华北电力科学研究院有限责任公司 | Test system for low-voltage power carrier communication equipment |
| WO2013096134A1 (en) * | 2011-12-22 | 2013-06-27 | Landis+Gyr Technologies, Llc | Digital signal processing for plc communications having communication frequencies |
| CN102868219A (en) * | 2012-09-03 | 2013-01-09 | 山西潞安环保能源开发股份有限公司 | Intelligent electric carrier classification locking device |
| CN103001666A (en) * | 2012-11-26 | 2013-03-27 | 中国电力科学研究院 | Low-voltage power line carrier channel attenuation characteristic test system and control method thereof |
| CN104569706A (en) * | 2013-10-15 | 2015-04-29 | 广西鑫百纳电气有限公司 | Signal injection adjusting device and signal injection device |
| CN203813780U (en) * | 2014-05-13 | 2014-09-03 | 郭广宇 | Power line carrier wave communication device |
| CN104333399A (en) * | 2014-10-30 | 2015-02-04 | 国家电网公司 | System for testing low-voltage power line carrier communication |
| CN205230328U (en) * | 2015-12-10 | 2016-05-11 | 国网四川省电力公司电力科学研究院 | Directly pour into wave form signal source of power line into |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116505976A (en) * | 2023-06-29 | 2023-07-28 | 无锡量子感知研究所 | Data transmission parameter determining method and device and electronic equipment |
| CN116505976B (en) * | 2023-06-29 | 2024-02-13 | 无锡量子感知研究所 | Data transmission parameter determining method and device and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102655422B (en) | Test system for low-voltage power carrier communication equipment | |
| CN204119227U (en) | Intelligent electric meter carrier communication module test gimulator | |
| CN201780335U (en) | Ground resistance detecting device of overhead transmission line pole tower | |
| CN103630748B (en) | A kind of device and method measured for micro-grid harmonic impedance | |
| CN103163380A (en) | Micro-ohm resistance measurement system based on LabVIEW developing platform | |
| CN103063936B (en) | A kind of LV-PLC channel noise measuring system for scene and method thereof | |
| CN105974351A (en) | Mutual inductor transient testing device and method with controllable amplification of Rogowski coil differential signals | |
| CN203572883U (en) | Novel intelligent frequency-conversion large-current grounding impedance measuring instrument | |
| CN104090219A (en) | Partial discharge high-frequency monitor of high-voltage cable terminals | |
| CN107102208B (en) | Method and device for measuring impulse grounding resistance | |
| CN106842103A (en) | A kind of three-phase electric energy meter dynamic property calibrating installation and system | |
| CN104569655B (en) | Complex background electromagnetic signal simulator and complex background electromagnetic environment generation method | |
| CN205230328U (en) | Directly pour into wave form signal source of power line into | |
| CN109557372A (en) | Impact power-frequency earthing impedance synthesis test device | |
| CN105551227A (en) | Waveform signal source directly injected into power line | |
| CN206292324U (en) | A kind of frequency-characteristic measuring-testing instrument | |
| CN106405464B (en) | A kind of method for the random waveform simulated power signal that generation can trace to the source | |
| CN202710695U (en) | Cable detector | |
| CN206321712U (en) | Impulse earthed resistance measuring system | |
| CN203414549U (en) | Ultra-low power test power meter | |
| CN204439742U (en) | Low-voltage network line identification device | |
| CN209167420U (en) | Impact power-frequency earthing impedance synthesis test device | |
| CN203376440U (en) | Three-phase distribution induction withstand voltage test instrument | |
| CN207124736U (en) | A kind of high-precision audio pulse circuit | |
| CN203519811U (en) | Multiple-position electric energy quality analytical test calibrating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160504 |