CN109884369A - A kind of 8 channel voltage of high-speed, high precision, 8 channel current sampling system - Google Patents
A kind of 8 channel voltage of high-speed, high precision, 8 channel current sampling system Download PDFInfo
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- CN109884369A CN109884369A CN201910082584.4A CN201910082584A CN109884369A CN 109884369 A CN109884369 A CN 109884369A CN 201910082584 A CN201910082584 A CN 201910082584A CN 109884369 A CN109884369 A CN 109884369A
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Abstract
The invention discloses a kind of 8 channel voltage of high-speed, high precision, 8 channel current sampling systems, comprising: 8 current signal input channels, 8 voltage signal input channels, 8 channel current signal processing circuits, 8 channel voltage signal processing circuits, AD sampling A/D chip, frequency measurement circuit, signal-isolated transmission circuit, isolated power supply circuit, FPGA circuitry, high-performance processor, function peripheral circuit and system power supply power supply circuit.The voltage and current acquisition system of the power quality equipment, it can support 8 channel voltages and 8 channel currents while sample, it can support the electric loop while sampled voltage current data of 2 three-phase four-wire systems, the power quality parameter in two circuits can be supported to compare and analyze in this way, simultaneously because can two circuits test simultaneously, testing efficiency can be improved in this way.
Description
Technical field
The present invention relates to voltage and current sampling technique fields, and in particular to a kind of 8 channel voltage of high-speed, high precision, 8 channel electricity
Flow sampling system.
Background technique
The portable electric energy treatment device of mainstream currently on the market can only nearly all measure the voltage electricity an of electric loop
Signal is flowed, i.e., can only measure 4 channel voltages and 4 channel currents simultaneously.The reason is that the voltage of these portable electric energy treatment devices
Current sampling system is only supported 4 channel voltages and 4 channel currents while being sampled, and sampling precision is low, and sample rate is less than mostly
100K/s.And since the implementation of voltage and current sampling system is excessively complicated, so needing to occupy very big volume and again
Amount, it is desirable to which the number of channels for increasing voltage and current sampling system must will increase the volume and weight of equipment, so that equipment is again big
It is again heavy, it differs greatly with " portable " triliteral describe.Due to the limitation of this voltage and current sampling system, greatly increase
The limitation of current portable electric energy treatment device application range, such as: when the electric energy matter for needing two circuits of measurement simultaneously
When amount, it is necessary to two single-circuit portable electric energy treatment devices do so at high cost, and wiring complexity is easy wrong, due to
It is the data obtained using two device measurings, equipment and equipment error value are different, lead to the error of distinct device data not
Unanimously, the time system of equipment and equipment is inconsistent, causes distinct device data that cannot compare and analyze；When needing to do high order
When frequency analysis, since sample rate is inadequate, higher hamonic wave cannot be sampled.
It can be seen that the prior art is primarily present following defect:
1, voltage and current sampling system only has 4 channel voltage, 4 channel current while sampling, and leads to that a three-phase can only be tested
The electric loop voltage and current parameter of the power supply system of four lines.
2, sample rate is low, is less than 100K/s mostly, leads to that higher hamonic wave analysis cannot be done, and is unable to discovery time less than 10us
Power quality parameter.
3, sampling precision is low, is 12 ADC mostly, and the data error for causing sampling to obtain is big.
4, voltage and current sampling system complexity is huge, uses single pass ADC sampling A/D chip, and 8 voltage and currents are adopted
Sample channel, it is necessary to 8 single pass ADC sampling A/D chips, in addition other cumbersome amplifying circuits, power supply circuit etc. increase
The volume and weight of sampling system.
5, voltage and current sampling system does not do isolation processing with other circuit systems, so that the safety of equipment is anti-interference
Property is had a greatly reduced quality.
Summary of the invention
In view of this, in order to solve the above problem in the prior art, the present invention proposes a kind of 8 channel of high-speed, high precision electricity
Press 8 channel current sampling systems.
The present invention is solved the above problems by following technological means:
A kind of 8 channel voltage of high-speed, high precision, 8 channel current sampling system, comprising:
8 current signal input channels, for inputting the current signal in 8 channels；
8 voltage signal input channels, for inputting the voltage signal in 8 channels；
8 channel current signal processing circuits are connect, for fitting to current signal with 8 current signal input channels
When filtering and zoom in or out processing so that output current signal is input to AD sampling A/D chip in a suitable range
In, carry out analog-to-digital conversion；
8 channel voltage signal processing circuits are connect, for fitting to voltage signal with 8 voltage signal input channels
When filtering and zoom in or out processing so that output voltage signal is input to AD sampling A/D chip in a suitable range
In, carry out analog-to-digital conversion；
AD sampling A/D chip is connect, for docking with 8 channel current signal processing circuits, 8 channel voltage signal processing circuits
The current signal and voltage signal received carries out analog-to-digital conversion；
Frequency measurement circuit is connect with 8 channel voltage signal processing circuits, for measuring by 8 channel voltage signals
The frequency of the voltage signal after processing of circuit is managed, when guaranteeing measurement period AC signal, each period can sample identical
Points, i.e. fixed frequency sampling；
Signal-isolated transmission circuit is connect, for sampling section and system to be isolated with AD sampling A/D chip, frequency measurement circuit
Core, when the signal corruption that sampling section is measured, will not influence system so that the safety is improved for whole system
Core works normally, but also system core part anti-interference ability greatly improves；
Isolated power supply circuit, with signal-isolated transmission circuit, frequency measurement circuit, AD sampling A/D chip, 8 channel voltage signals
Processing circuit, 8 channel current signal processing circuits, 8 voltage signal input channels, 8 current signal input channel connections, are used
It powers in offer -12V ,+12V and 5V supply voltage to sampling section；
FPGA circuitry, with signal-isolated transmission circuit connection, for passing through signal-isolated transmission circuit, 8 channels of control are electric
Signal processing circuit and the shift of 8 channel current signal processing circuit ranges are pressed, and communicates with AD sampling A/D chip, receive and tentatively locates
The AD data for managing voltage and current, measure the frequency of each voltage channel signal；
High-performance processor is connect with FPGA circuitry, will for being carried out data transmission by PCIE bus with FPGA circuitry
The voltage and current data of its preliminary treatment are calculated and are analyzed, and all power quality measurement parameters are obtained；
Function peripheral circuit, connect with high-performance processor, is used for system expanding function, so that entire sampling system function
It is more powerful；
System power supply power supply circuit connects with isolated power supply circuit, function peripheral circuit, high-performance processor, FPGA circuitry
It connects, powers for providing+12V ,+5V ,+3.3V ,+1.8V supply voltage to whole system.
Further, 8 current signal input channels are believed using the current transformer input current with BNC connector
Number.
Further, the input range of the current signal is that -10V arrives+10V.
Further, 8 voltage signal input channels directly input voltage signal using banana head interface.
Further, the input range of the voltage signal is that -1000V arrives+1000V.
Further, the AD uses AD7616 chip using chip.
Further, the signal-isolated transmission circuit had not only been accomplished isolation using magnetic couple but also had transmitted by signal.
Further, the function peripheral circuit includes 4G, WIFI, GPS, bluetooth, USB, input/output switching amount circuit,
SD card, Ethernet, 232 serial ports, liquid crystal display and backlight key.
Further, 8 channel voltage of high-speed, high precision, the 8 channel current sampling system further includes and system power supply power supply
The system protection circuit of circuit connection, for cutting off the power when supply voltage overrate, to protect sampling system.
Further, 8 channel voltage of high-speed, high precision, the 8 channel current sampling system further includes and high-performance processor
The data storage circuitry of connection, for storing the processing data of buffering high-performance processor.
Compared with prior art, beneficial effects of the present invention include at least:
1, the voltage and current acquisition system of the power quality equipment can support 8 channel voltages and 8 channel currents same
When sample, it can support 2 three-phase four-wire systems electric loop simultaneously sampled voltage current data, can support two in this way
The power quality parameter in circuit compares and analyzes, simultaneously because can two circuits test simultaneously, test can be improved in this way
Efficiency.
2, for the first time on portable electric energy treatment device using the voltage and current sampling system with 16 channels, the sampling
System uses 16 high-precision AD sampling A/D chips, supports 16 channels while sampling, and sampling has reached 2M/s and met power grid enough
Frequency analysis within 400 times of power supply system supports automatic setting sample rate when not needing so high sample rate
Or manual setting sample rate, reach reduction power consumption, save the purpose of processor occupancy, which uses
Positive and negative 12V dual power supply, so that the circuit of system greatly simplifies, reduces volume due to not needing the circuits such as applied bias
And weight, accomplish the similar size of single loop power quality equipment with mainstream currently on the market.
3, whole system uses isolation design, and the circuit of the circuit of sampling section and system core part is kept apart, is mentioned
High anti-jamming capacity guarantees the reliability of whole system safe operation, even if having accessed big voltage signal, by the electricity of sampling section
Path loss is bad, and the circuit that will not influence system core part works normally, while also ensuring Personal Safety.
4, peripheral functionality configuration is abundant, has many functions all not match on other the in the market power quality equipment of mainstream
It sets, such as 4G, WIFI, GPS, bluetooth, input/output switching amount, 1000M Ethernet, the functions such as backlight key.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the structural schematic diagram of 8 channel voltage of high-speed, high precision, 8 channel current sampling system of the present invention；
Fig. 2 is the sampling flow chart of 8 channel voltage of high-speed, high precision, 8 channel current sampling system of the present invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with attached drawing and specifically
Embodiment technical solution of the present invention is described in detail.It should be pointed out that described embodiment is only this hair
Bright a part of the embodiment, instead of all the embodiments, based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
As shown in Figs. 1-2, the present invention provides a kind of 8 channel voltage of high-speed, high precision, 8 channel current sampling system, comprising: 8
A current signal input channel, 8 voltage signal input channels, 8 channel current signal processing circuits, at 8 channel voltage signals
Manage circuit, AD sampling A/D chip, frequency measurement circuit, signal-isolated transmission circuit, isolated power supply circuit, FPGA circuitry, high-performance
Processor, function peripheral circuit and system power supply power supply circuit；
8 current signal input channels are used to input the current signal in 8 channels；
8 voltage signal input channels are used to input the voltage signal in 8 channels；
The 8 channel current signal processing circuit is connect with 8 current signal input channels, for carrying out to current signal
It is appropriate to filter and zoom in or out processing, so that output current signal in a suitable range, is input to AD sampling core
In piece, analog-to-digital conversion is carried out；
The 8 channel voltage signal processing circuit is connect with 8 voltage signal input channels, for carrying out to voltage signal
It is appropriate to filter and zoom in or out processing, so that output voltage signal in a suitable range, is input to AD sampling core
In piece, analog-to-digital conversion is carried out；
The AD sampling A/D chip is connect with 8 channel current signal processing circuits, 8 channel voltage signal processing circuits, is used for
Analog-to-digital conversion is carried out to the current signal and voltage signal received；
The frequency measurement circuit is connect with 8 channel voltage signal processing circuits, passes through 8 channel voltage signals for measuring
The frequency of voltage signal after processing circuit processes, when guaranteeing measurement period AC signal, each period can sample identical
Points, i.e. fixed frequency sampling；
The signal-isolated transmission circuit is connect with AD sampling A/D chip, frequency measurement circuit, for be isolated sampling section and
System core part, when the signal corruption that sampling section is measured, will not influence so that the safety is improved for whole system
System core part works normally, but also system core part anti-interference ability greatly improves；
The isolated power supply circuit and signal-isolated transmission circuit, frequency measurement circuit, AD sampling A/D chip, 8 channel voltages
Signal processing circuit, 8 channel current signal processing circuits, 8 voltage signal input channels, 8 current signal input channels connect
It connects, powers for providing -12V ,+12V and 5V supply voltage to sampling section；
The FPGA circuitry and signal-isolated transmission circuit connection, for controlling 8 channels by signal-isolated transmission circuit
Voltage signal processing circuit and the shift of 8 channel current signal processing circuit ranges, and communicated with AD sampling A/D chip, it receives and preliminary
The AD data for handling voltage and current, measure the frequency of each voltage channel signal；
The high-performance processor is connect with FPGA circuitry, for carrying out data biography by PCIE bus and FPGA circuitry
It is defeated, the voltage and current data of its preliminary treatment are calculated and analyzed, all power quality measurement parameters are obtained；
The function peripheral circuit is connect with high-performance processor, system expanding function is used for, so that entire sampling system
Function is more powerful；Function peripheral circuit includes 4G, WIFI, GPS, bluetooth, USB, input/output switching amount circuit, SD card, with
Too net, 232 serial ports, liquid crystal display and backlight key etc.；
The system power supply power supply circuit and isolated power supply circuit, function peripheral circuit, high-performance processor, FPGA circuitry
Connection is powered for providing+12V ,+5V ,+3.3V ,+1.8V supply voltage to whole system.
Specifically, 8 channel voltage of high-speed, high precision, the 8 channel current sampling system further includes and system power supply power supply electricity
The system protection circuit of road connection, for cutting off the power when supply voltage overrate, to protect sampling system.
Specifically, 8 channel voltage of high-speed, high precision, the 8 channel current sampling system further includes connecting with high-performance processor
The data storage circuitry connect, for storing the processing data of buffering high-performance processor.
8 channel voltage of high-speed, high precision, the 8 channel current sampling system course of work of the present invention is as follows:
1, electric current input channel uses BNC connector, uses the current transformer input current signal with BNC connector, electric current
Range-the 10V Dao+10V of signal；Voltage input channel uses banana head interface, can directly input voltage signal, voltage signal
Input range -1000V arrives+1000V.
2,8 channel voltage signal processing circuits and 8 channel current signal processing circuits respectively carry out voltage and current signal
It is appropriate to filter and zoom in or out processing, so that output voltage current signal is input to AD and adopts in a suitable range
Sample chip 7616 carries out analog-to-digital conversion.
3, frequency measurement circuit mainly measures, the voltage signal after handling by 8 channel voltage signal processing circuits
The benefit of frequency, measurement frequency is, it is ensured that when measurement period AC signal, each period can sample identical points,
That is fixed frequency sampling.
4, isolated power supply circuit and signal-isolated transmission circuit, main function are isolation sampling section and system core portion
Point, so that the safety is improved for whole system, it, can't shadow when signal (being greater than 1000V) damage that sampling section is measured
Acoustic system core works normally, but also system core part anti-interference ability greatly improves.Isolated power supply circuit offer-
The supply voltages such as 12V ,+12V and 5V are powered to sampling section；Signal-isolated transmission circuit can both have been accomplished using magnetic couple every
From, and signal can be transmitted.
5, Low Power High Performance FPGA circuitry controls at 8 channel voltage signals mainly by signal-isolated transmission circuit
Manage circuit and 8 channel current signal processing circuit ranges shift, and with 7616 chip communication of AD sampling A/D chip, receive simultaneously tentatively locate
The AD data for managing voltage and current, measure the frequency of each voltage channel signal.
6, the supply voltages such as system power supply power supply circuit offer+12V ,+5V ,+3.3V ,+1.8V are powered to whole system.
7,4 core 1.2GHz, 1G fortune deposit high-performance processor, carry out data by PCIE bus and Low Power High Performance FPGA
Transmission, the voltage and current data of its preliminary treatment are calculated and are analyzed, obtain all power quality measurement parameters；Pass through
Connect a series of function peripheral circuits such as: 4G, GPS etc., so that entire sampling system, function are more powerful.
8, function peripheral circuit has function very rich, such as 4G, WIFI, and bluetooth can pass through these wireless networks
Transmit data to mobile phone or server etc.；SD card can store the test data of system；Liquid crystal display can show test data；
The configuration parameter etc. of sampling system can be set in backlight key.
Compared with prior art, beneficial effects of the present invention include at least:
1, the voltage and current acquisition system of the power quality equipment can support 8 channel voltages and 8 channel currents same
When sample, it can support 2 three-phase four-wire systems electric loop simultaneously sampled voltage current data, can support two in this way
The power quality parameter in circuit compares and analyzes, simultaneously because can two circuits test simultaneously, test can be improved in this way
Efficiency.
2, for the first time on portable electric energy treatment device using the voltage and current sampling system with 16 channels, the sampling
System uses 16 high-precision AD sampling A/D chips, supports 16 channels while sampling, and sampling has reached 2M/s and met power grid enough
Frequency analysis within 400 times of power supply system supports automatic setting sample rate when not needing so high sample rate
Or manual setting sample rate, reach reduction power consumption, save the purpose of processor occupancy, which uses
Positive and negative 12V dual power supply, so that the circuit of system greatly simplifies, reduces volume due to not needing the circuits such as applied bias
And weight, accomplish the similar size of single loop power quality equipment with mainstream currently on the market.
3, whole system uses isolation design, and the circuit of the circuit of sampling section and system core part is kept apart, is mentioned
High anti-jamming capacity guarantees the reliability of whole system safe operation, even if having accessed big voltage signal, by the electricity of sampling section
Path loss is bad, and the circuit that will not influence system core part works normally, while also ensuring Personal Safety.
4, peripheral functionality configuration is abundant, has many functions all not match on other the in the market power quality equipment of mainstream
It sets, such as 4G, WIFI, GPS, bluetooth, input/output switching amount, 1000M Ethernet, the functions such as backlight key.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of 8 channel voltage of high-speed, high precision, 8 channel current sampling system characterized by comprising
8 current signal input channels, for inputting the current signal in 8 channels；
8 voltage signal input channels, for inputting the voltage signal in 8 channels；
8 channel current signal processing circuits are connect with 8 current signal input channels, appropriate for carrying out to current signal
Processing is filtered and zooms in or out, so that output current signal is input in AD sampling A/D chip in a suitable range, into
Row analog-to-digital conversion；
8 channel voltage signal processing circuits are connect with 8 voltage signal input channels, appropriate for carrying out to voltage signal
Processing is filtered and zooms in or out, so that output voltage signal is input in AD sampling A/D chip in a suitable range, into
Row analog-to-digital conversion；
AD sampling A/D chip is connect with 8 channel current signal processing circuits, 8 channel voltage signal processing circuits, for receiving
Current signal and voltage signal carry out analog-to-digital conversion；
Frequency measurement circuit is connect with 8 channel voltage signal processing circuits, for measuring by 8 channel voltage signal processing electricity
The frequency of voltage signal after the processing of road, when guaranteeing measurement period AC signal, each period can sample identical points,
That is fixed frequency sampling；
Signal-isolated transmission circuit is connect, for sampling section and the system core to be isolated with AD sampling A/D chip, frequency measurement circuit
Part, when the signal corruption that sampling section is measured, will not influence the system core so that the safety is improved for whole system
Part works normally, but also system core part anti-interference ability greatly improves；
Isolated power supply circuit, with signal-isolated transmission circuit, frequency measurement circuit, AD sampling A/D chip, 8 channel voltage signal processings
Circuit, 8 channel current signal processing circuits, 8 voltage signal input channels, 8 current signal input channel connections, for mentioning
It powers for -12V ,+12V and 5V supply voltage to sampling section；
FPGA circuitry, with signal-isolated transmission circuit connection, for passing through signal-isolated transmission circuit, 8 channel voltages of control are believed
Number processing circuit and the shift of 8 channel current signal processing circuit ranges, and communicate with AD sampling A/D chip, it receives and preliminary treatment is electric
The AD data of current voltage measure the frequency of each voltage channel signal；
High-performance processor is connect with FPGA circuitry, will be at the beginning of it for being carried out data transmission by PCIE bus with FPGA circuitry
The voltage and current data of step processing are calculated and are analyzed, and all power quality measurement parameters are obtained；
Function peripheral circuit, connect with high-performance processor, is used for system expanding function, so that entire sampling system function is more
It is powerful；
System power supply power supply circuit is connect with isolated power supply circuit, function peripheral circuit, high-performance processor, FPGA circuitry, is used
It powers in offer+12V ,+5V ,+3.3V ,+1.8V supply voltage to whole system.
2. 8 channel voltage of high-speed, high precision, 8 channel current sampling system according to claim 1, which is characterized in that described
8 current signal input channels use the current transformer input current signal with BNC connector.
3. 8 channel voltage of high-speed, high precision, 8 channel current sampling system according to claim 1, which is characterized in that described
The input range of current signal is that -10V arrives+10V.
4. 8 channel voltage of high-speed, high precision, 8 channel current sampling system according to claim 1, which is characterized in that described
8 voltage signal input channels directly input voltage signal using banana head interface.
5. 8 channel voltage of high-speed, high precision, 8 channel current sampling system according to claim 1, which is characterized in that described
The input range of voltage signal is that -1000V arrives+1000V.
6. 8 channel voltage of high-speed, high precision, 8 channel current sampling system according to claim 1, which is characterized in that described
AD uses AD7616 chip using chip.
7. 8 channel voltage of high-speed, high precision, 8 channel current sampling system according to claim 1, which is characterized in that described
Signal-isolated transmission circuit had not only been accomplished isolation using magnetic couple but also had transmitted by signal.
8. 8 channel voltage of high-speed, high precision, 8 channel current sampling system according to claim 1, which is characterized in that described
Function peripheral circuit includes 4G, WIFI, GPS, bluetooth, USB, input/output switching amount circuit, SD card, Ethernet, 232 serial ports,
Liquid crystal display and backlight key.
9. 8 channel voltage of high-speed, high precision, 8 channel current sampling system according to claim 1, which is characterized in that described
8 channel voltage of high-speed, high precision, 8 channel current sampling system further includes and the system protection of system power supply power supply circuit connection is electric
Road, for cutting off the power when supply voltage overrate, to protect sampling system.
10. 8 channel voltage of high-speed, high precision, 8 channel current sampling system according to claim 1, which is characterized in that institute
Stating 8 channel voltage of high-speed, high precision, 8 channel current sampling system further includes the data storage circuitry connecting with high-performance processor,
For storing the processing data of buffering high-performance processor.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112504345A (en) * | 2020-12-09 | 2021-03-16 | 深圳澳联数字科技有限公司 | Fire embedded equipment of burning furnace traditional instrumentation remote data acquisition |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782607A (en) * | 2009-01-19 | 2010-07-21 | 上海华建电力设备股份有限公司 | Frequency-conversion harmonic measuring device of electrical power system |
| CN102338824A (en) * | 2010-07-19 | 2012-02-01 | 樊奔 | Novel extensible system for detecting voltage of single fuel cell |
| CN202815120U (en) * | 2012-09-27 | 2013-03-20 | 深圳市亚特尔科技有限公司 | Electric energy quality acquisition system in electric energy quality analyzer |
| CN103257280A (en) * | 2013-04-16 | 2013-08-21 | 西安工程大学 | Capacitive equipment dielectric loss monitoring device based on electric field sensor and monitoring method |
| CN203178389U (en) * | 2013-04-25 | 2013-09-04 | 国家电网公司 | Electric energy quality monitoring device based on AD7606 high-speed multichannel sampling |
| CN103604988A (en) * | 2013-11-28 | 2014-02-26 | 杭州市特种设备检测研究院 | Method and system for online detecting on feedback electricity quality and feedback energy-saving efficiency of elevator |
| CN106093543A (en) * | 2016-06-07 | 2016-11-09 | 国网电力科学研究院武汉南瑞有限责任公司 | Direct current cables leakage current electrification detection system |
| CN206311666U (en) * | 2017-01-05 | 2017-07-07 | 云南电网有限责任公司电力科学研究院 | A kind of energy-conservation detector |
| CN108471126A (en) * | 2018-04-20 | 2018-08-31 | 国家电网公司 | three-phase load unbalance automatic adjustment system |
| CN108535575A (en) * | 2018-05-24 | 2018-09-14 | 国网辽宁省电力有限公司电力科学研究院 | Power quality analysis device based on short-distance wireless communication technology |
| CN108535576A (en) * | 2018-05-24 | 2018-09-14 | 国网辽宁省电力有限公司电力科学研究院 | Multichannel power quality analysis device based on 3G network |
| CN108627722A (en) * | 2018-04-09 | 2018-10-09 | 哈尔滨理工大学 | A kind of electric energy quality real-time monitoring device based on ARM |
-
2019
- 2019-01-28 CN CN201910082584.4A patent/CN109884369A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782607A (en) * | 2009-01-19 | 2010-07-21 | 上海华建电力设备股份有限公司 | Frequency-conversion harmonic measuring device of electrical power system |
| CN102338824A (en) * | 2010-07-19 | 2012-02-01 | 樊奔 | Novel extensible system for detecting voltage of single fuel cell |
| CN202815120U (en) * | 2012-09-27 | 2013-03-20 | 深圳市亚特尔科技有限公司 | Electric energy quality acquisition system in electric energy quality analyzer |
| CN103257280A (en) * | 2013-04-16 | 2013-08-21 | 西安工程大学 | Capacitive equipment dielectric loss monitoring device based on electric field sensor and monitoring method |
| CN203178389U (en) * | 2013-04-25 | 2013-09-04 | 国家电网公司 | Electric energy quality monitoring device based on AD7606 high-speed multichannel sampling |
| CN103604988A (en) * | 2013-11-28 | 2014-02-26 | 杭州市特种设备检测研究院 | Method and system for online detecting on feedback electricity quality and feedback energy-saving efficiency of elevator |
| CN106093543A (en) * | 2016-06-07 | 2016-11-09 | 国网电力科学研究院武汉南瑞有限责任公司 | Direct current cables leakage current electrification detection system |
| CN206311666U (en) * | 2017-01-05 | 2017-07-07 | 云南电网有限责任公司电力科学研究院 | A kind of energy-conservation detector |
| CN108627722A (en) * | 2018-04-09 | 2018-10-09 | 哈尔滨理工大学 | A kind of electric energy quality real-time monitoring device based on ARM |
| CN108471126A (en) * | 2018-04-20 | 2018-08-31 | 国家电网公司 | three-phase load unbalance automatic adjustment system |
| CN108535575A (en) * | 2018-05-24 | 2018-09-14 | 国网辽宁省电力有限公司电力科学研究院 | Power quality analysis device based on short-distance wireless communication technology |
| CN108535576A (en) * | 2018-05-24 | 2018-09-14 | 国网辽宁省电力有限公司电力科学研究院 | Multichannel power quality analysis device based on 3G network |
Non-Patent Citations (3)
| Title |
|---|
| 徐端全: "《嵌入式系统原理与设计》", 30 September 2009, 北京：北京航空航天大学出版社 * |
| 本书编委会编: "《采煤工》", 30 June 2008, 北京：煤炭工业出版社 * |
| 王雷 等: "《单片机系统设计基础》", 31 May 2012, 北京：北京航空航天大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112504345A (en) * | 2020-12-09 | 2021-03-16 | 深圳澳联数字科技有限公司 | Fire embedded equipment of burning furnace traditional instrumentation remote data acquisition |
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