CN108120874A - A kind of method for quick and precisely gathering multiple AC on-off model - Google Patents
A kind of method for quick and precisely gathering multiple AC on-off model Download PDFInfo
- Publication number
- CN108120874A CN108120874A CN201711259531.2A CN201711259531A CN108120874A CN 108120874 A CN108120874 A CN 108120874A CN 201711259531 A CN201711259531 A CN 201711259531A CN 108120874 A CN108120874 A CN 108120874A
- Authority
- CN
- China
- Prior art keywords
- road
- voltage
- voltage input
- input signal
- value
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/16—Spectrum analysis; Fourier analysis
Abstract
The invention discloses a kind of method of Quick Acquisition multiple AC on-off model, step includes：According to ac frequency, the voltage input signal of multiple AC in variable connector one cycle of sampling is utilized；The virtual value of each road voltage is calculated according to the voltage input signal value of sampling gained, and calculates the fundamental wave initial angle of each road voltage；Judge that the switch of the road control source is closure or disconnection according to the virtual value of each road voltage and fundamental wave initial angle；Judge whether whole voltages sample to finish, if it is not, then continuing to sample；If so, select by the maximum in the virtual value of each road voltage all the way and fundamental wave initial angle is that most voltage input signals all the way carry out resamplings, the frequency of the road voltage input signal is calculated using the voltage input signal of road sampling gained；It repeats the above steps, you can obtain the on-off model of each road alternating current.Method provided by the invention, can effectively reduce wiring can simultaneously meet the needs of quick and precisely measuring on-off model.
Description
Technical field
The present invention relates to the acquisition methods of ac signal more particularly to a kind of Quick Acquisition multiple AC switching value to believe
Number method.
Background technology
The application scenario of the AC power distribution cabinet/AC distribution panel of data center is more and more, and cabinet type also becomes increasingly complex various, monitoring system
Realize the conduct monitoring at all levels to inlet wire and feeder line branch, and feeder line branch is especially more, more 100 multichannels of arrival.Monitoring system
The electrical parameter of monitoring includes on off state, electric current, voltage, power etc..How to accomplish measuring instrumentss in the range of in a limited space
Minimum, data update most changes soon, and particularly on off state, the whole system on off state response time is less than 1 second, removes
The run time of communication time and system, the time for leaving acquisition module for only have 0.5s.Therefore, how space-intensive ring
The on-off model of alternating current is rapidly and accurately gathered under border, becomes urgent problem in the prior art.
The content of the invention
For overcome the deficiencies in the prior art and there are the problem of, the present invention provides a kind of Quick Acquisition multichannel AC electric switch
The method for measuring signal, this method is more especially suitable for AC power distribution cabinet/AC distribution panel switch, in the environment of space-intensive, can effectively reduce wiring
And can meet the needs of quick and precisely measuring on-off model.
The present invention is achieved by the following technical solutions：A kind of side of Quick Acquisition multiple AC on-off model
Method, the method step include：
S1, according to ac frequency, variable connector is utilized to sample the voltage input signal of multiple AC in a cycle；
S2, the virtual value of each road voltage is calculated according to the voltage input signal value of sampling gained, and calculates the base of each road voltage
Ripple initial angle；
S3, judge that the switch of the road control source is to be in closure state also according to the virtual value and fundamental wave initial angle of each road voltage
It is off-state；
S4, judge whether whole voltages sample and finish, if it is not, then continuing to sample other each road voltage input signals；If so, choosing
Maximum in the virtual value of Ze Jiangge roads voltage all the way and fundamental wave initial angle carries out for most voltage input signals all the way
Resampling calculates the frequency of the road voltage input signal using the voltage input signal of road sampling gained；
S5, the S1- steps that repeat the above steps S4, you can obtain the on-off model of each road alternating current.
Preferably, in the step S2, the fundamental wave initial angle of each road voltage is calculated using DFT transform；The step S4
In, the frequency of voltage input signal is gone out using adding window method and interpolation calculation.
It is preferred that the step S3 is specifically included：
S31, judge whether the virtual value of each road voltage is more than preset value, the way switch is judged if being less than to disconnect, if more than
Then enter lower step S32；
S32, judge whether more than the angle between the voltage of preset value and this group of maximum voltage be 0 °, 120 ° or 240 °, is then
The way switch is judged to be closed, is otherwise judged as interference signal, that is, judges the way switch to disconnect.
It is preferred that the preset value is the 60% of load voltage value.
Method provided by the invention, the occasion of space-intensive more especially suitable for AC power distribution cabinet/AC distribution panel（Such as data center
The occasion of AC power distribution cabinet/AC distribution panel）, using the present invention, wiring can be effectively reduced, is reduced the cost, increased reliability, while can meet
Quick and precisely measure the demand of on-off model.
Description of the drawings
Fig. 1 is the method flow diagram of the embodiment of the present invention.
Fig. 2 is the specific steps flow chart of the occasion for the AC power distribution cabinet/AC distribution panel for applying the present invention to data center.
Specific embodiment
For the ease of the understanding of those skilled in the art, the present invention is made below in conjunction with the drawings and specific embodiments further
It is described in detail.
As shown in Figure 1, a kind of method of Quick Acquisition multiple AC on-off model, the method step include：
S1, according to ac frequency, variable connector is utilized to sample the voltage input signal of multiple AC in a cycle；
S2, the virtual value of each road voltage is calculated according to the voltage input signal value of sampling gained, and calculates the base of each road voltage
Ripple initial angle；
S3, judge that the switch of the road control source is to be in closure state also according to the virtual value and fundamental wave initial angle of each road voltage
It is off-state；
S4, judge whether whole voltages sample and finish, if it is not, then continuing to sample other each road voltage input signals；If so, choosing
Maximum in the virtual value of Ze Jiangge roads voltage all the way and fundamental wave initial angle carries out for most voltage input signals all the way
Resampling calculates the frequency of the road voltage input signal using the voltage input signal of road sampling gained；
S5, the S1- steps that repeat the above steps S4, you can obtain the on-off model of each road alternating current.
As preferred embodiment, in the step S2, the fundamental wave that each road voltage is calculated preferably by DFT transform is initial
Angle；In the step S4, the frequency of voltage input signal is gone out preferably by adding window method and interpolation calculation.
In a wherein preferred embodiment, the step S3 is specifically included：
S31, judge whether the virtual value of each road voltage is more than preset value, the way switch is judged if being less than to disconnect, if more than
Then enter lower step S32；
S32, judge whether more than the angle between the voltage of preset value and this group of maximum voltage be 0 °, 120 ° or 240 °, is then
The way switch is judged to be closed, is otherwise judged as interference signal, that is, judges the way switch to disconnect.It is preset described in the present embodiment
It is worth for the 60% of preferred load voltage value.
Wherein, in step S1, the complete information of a cycle is only sampled, such sampling time is very short, only needs 20ms or so,
6 road voltages can be once sampled, therefore sample 48 tunnels only to need 160ms.And in step S3, then it is place for accurate judgement switch
In closure state or off-state.And in step S4, frequency is accurately calculated, if frequency is inaccurate, using sampled value just
Electrical parameter cannot be computed correctly, so as to cannot also be used in switch measurement and electric parameter measurement simultaneously.
Method provided in an embodiment of the present invention, the occasion of space-intensive more especially suitable for AC power distribution cabinet/AC distribution panel（Such as data
The occasion of the AC power distribution cabinet/AC distribution panel at center）, specifically, apply the present invention to the AC power distribution cabinet/AC distribution panel of data center occasion it is specific
Steps flow chart is as shown in Figure 2.Using the present invention, electrical measuring instrument and switch measuring instrumentss can be combined together, so as to
Metered quantity can be effectively reduced, wiring is reduced, reduces the cost, increases reliability, while quick and precisely measurement switch can also be met
Measure the demand of signal.
Above-described embodiment is the preferable realization method of the present invention, is not limited to the present invention, is not departing from this hair
On the premise of bright inventive concept, any obvious replacement is within protection scope of the present invention.
Claims (5)
- A kind of 1. method of Quick Acquisition multiple AC on-off model, which is characterized in that the method step includes：S1, according to ac frequency, variable connector is utilized to sample the voltage input signal of multiple AC in a cycle；S2, the virtual value of each road voltage is calculated according to the voltage input signal value of sampling gained, and calculates the base of each road voltage Ripple initial angle；S3, judge that the switch of the road control source is to be in closure state also according to the virtual value and fundamental wave initial angle of each road voltage It is off-state；S4, judge whether whole voltages sample and finish, if it is not, then continuing to sample other each road voltage input signals；If so, choosing Maximum in the virtual value of Ze Jiangge roads voltage all the way and fundamental wave initial angle carries out for most voltage input signals all the way Resampling calculates the frequency of the road voltage input signal using the voltage input signal of road sampling gained；S5, the S1- steps that repeat the above steps S4, you can obtain the on-off model of each road alternating current.
- 2. according to the method described in claim 1, it is characterized in that：In the step S2, each road electricity is calculated using DFT transform The fundamental wave initial angle of pressure.
- 3. according to the method described in claim 2, it is characterized in that：In the step S4, adding window method and interpolation calculation are utilized Go out the frequency of voltage input signal.
- 4. the method according to any one in claims 1 to 3, which is characterized in that the step S3 is specifically included：S31, judge whether the virtual value of each road voltage is more than preset value, the way switch is judged if being less than to disconnect, if more than Then enter lower step S32；S32, judge whether more than the angle between the voltage of preset value and this group of maximum voltage be 0 °, 120 ° or 240 °, is then Judge that the way switch to be closed, is otherwise judged as interference signal.
- 5. according to the method described in claim 4, it is characterized in that：The preset value is the 60% of load voltage value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711259531.2A CN108120874B (en) | 2017-12-04 | 2017-12-04 | Method for rapidly and accurately acquiring multi-path alternating current switching value signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711259531.2A CN108120874B (en) | 2017-12-04 | 2017-12-04 | Method for rapidly and accurately acquiring multi-path alternating current switching value signals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108120874A true CN108120874A (en) | 2018-06-05 |
| CN108120874B CN108120874B (en) | 2020-12-04 |
Family
ID=62228872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711259531.2A Active CN108120874B (en) | 2017-12-04 | 2017-12-04 | Method for rapidly and accurately acquiring multi-path alternating current switching value signals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108120874B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444506A (en) * | 2018-09-28 | 2019-03-08 | 广东雅达电子股份有限公司 | A kind of AC system voltage measurement and calculation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107829A (en) * | 2011-11-09 | 2013-05-15 | 中国移动通信集团上海有限公司 | Opening and closing switching method and device of filtering device of power line communication system |
| CN106124866A (en) * | 2016-06-14 | 2016-11-16 | 武汉华中数控股份有限公司 | A kind of periodic signal waves test device |
-
2017
- 2017-12-04 CN CN201711259531.2A patent/CN108120874B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107829A (en) * | 2011-11-09 | 2013-05-15 | 中国移动通信集团上海有限公司 | Opening and closing switching method and device of filtering device of power line communication system |
| CN106124866A (en) * | 2016-06-14 | 2016-11-16 | 武汉华中数控股份有限公司 | A kind of periodic signal waves test device |
Non-Patent Citations (4)
| Title |
|---|
| 何乐根 等: "《电气设备安装工程识图与施工》", 29 February 2012, 浙江大学出版社 * |
| 张弛 等: "《电子产品装调》", 30 June 2014, 苏州大学出版社 * |
| 王凯: "交流电压/电流智能传感器信号处理技术的研究", 《中国优秀硕士学位论文全文数据库信息科技辑》 * |
| 高永清 等: "感应通信式矿用馈电状态传感器研究", 《传感技术学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444506A (en) * | 2018-09-28 | 2019-03-08 | 广东雅达电子股份有限公司 | A kind of AC system voltage measurement and calculation method |
| CN109444506B (en) * | 2018-09-28 | 2021-09-21 | 广东雅达电子股份有限公司 | Alternating current system voltage measurement and calculation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108120874B (en) | 2020-12-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Korkali et al. | Optimal deployment of wide-area synchronized measurements for fault-location observability | |
| CN107925240B (en) | Test system for traveling wave fault detector | |
| US11267356B2 (en) | Charging station for charging electric vehicles with distributed energy measurement and method | |
| CN107340486B (en) | State detection method for output current sensor of locomotive traction converter | |
| CN106772208B (en) | Single three-phase meter integrated reliability test board | |
| CN109636663B (en) | Method and device for identifying household transformer relationship of back-to-back distribution transformer | |
| CN107272792B (en) | A kind of constant-current source device for breaker test | |
| CN102809687A (en) | Digital measurement method for alternating-current frequency | |
| CN101236228A (en) | Lightning arrester various waveform aging test device | |
| CN103424627B (en) | The method of double-end measurement parallel grid line zero-sequence impedance | |
| CN105372496A (en) | Phase identification device and phase identification method in power supply network | |
| CN108120874A (en) | A kind of method for quick and precisely gathering multiple AC on-off model | |
| CN103529829A (en) | Test system for electric vehicle controller | |
| CN103392132A (en) | Method and system for measuring electrical quantity in electrical network | |
| US20150094966A1 (en) | Quadrature-based voltage events detection method | |
| CN109625038A (en) | A kind of track circuit state identification system and method | |
| CN108254623B (en) | Method and device for measuring high-frequency alternating current resistance of lead | |
| CN106546943B (en) | Method and device for measuring error and loss self-test | |
| CN217385689U (en) | Multi-station test system and test platform | |
| CN201177647Y (en) | Multiple waveform aging test apparatus of lightning arrester | |
| CN106526365A (en) | Single-live-wire power consumption data measurement method and single-live-wire intelligent breaker | |
| CN204129150U (en) | A kind of on-line measuring device of power equipment | |
| CN115932385A (en) | Residual current monitoring method and system and single-phase intelligent electric energy meter | |
| CN203552056U (en) | Electric vehicle controller test system | |
| CN211263720U (en) | Double-clamp-meter type direct current grounding searching instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |