CN112964927A - Data acquisition system - Google Patents
Data acquisition system Download PDFInfo
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- CN112964927A CN112964927A CN202110161202.4A CN202110161202A CN112964927A CN 112964927 A CN112964927 A CN 112964927A CN 202110161202 A CN202110161202 A CN 202110161202A CN 112964927 A CN112964927 A CN 112964927A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
- G01R19/2503—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques for measuring voltage only, e.g. digital volt meters (DVM's)
Abstract
The invention discloses a data acquisition system, which comprises a voltage division module, a data acquisition module, a processing module and monitoring equipment, wherein the voltage output by primary equipment is subjected to voltage reduction, sampling and formatting processing, so that the monitoring equipment can calculate the output voltage of the primary equipment according to a standard digital sampling signal, thereby realizing the real-time monitoring of the output voltage of the primary equipment and improving the safety of a power grid. In addition, the voltage division module and the data acquisition module are separated by a preset distance, when the value of the preset distance is large, the electromagnetic interference among the modules can be effectively reduced, and the accuracy of measuring the output voltage of primary equipment is further improved.
Description
Technical Field
The invention relates to the field of voltage measurement, in particular to a data acquisition system.
Background
At present, primary equipment refers to high-voltage electrical equipment directly used in the production process of producing, transporting and distributing electric energy, and secondary equipment refers to low-voltage electrical equipment which monitors the output voltage of the primary equipment and provides the operation condition of the primary equipment for operation and maintenance personnel according to the monitoring result. Because the output voltage of the primary equipment is high voltage of kilovolt level, if the output voltage of the primary equipment fluctuates, safety accidents are easy to happen, and the safety of a power grid is threatened. Therefore, it is necessary to provide a data acquisition system to accurately measure the output voltage value of a primary device.
Disclosure of Invention
The invention aims to provide a data acquisition system which can realize real-time monitoring of the output voltage of primary equipment so as to improve the safety of a power grid. In addition, when the value of the preset distance is larger, the electromagnetic interference among the modules can be effectively reduced, and the accuracy of measuring the output voltage of primary equipment is further improved.
In order to solve the above technical problem, the present invention provides a data acquisition system, including:
the voltage division module is connected with the primary equipment and used for carrying out voltage reduction processing on the output voltage of the primary equipment to obtain a low-voltage signal;
the data acquisition module is connected with the voltage division module and is used for sampling the low-voltage signal output by the voltage division module to obtain a digital sampling signal;
the processing module is connected with the output end of the data acquisition module and is used for formatting the digital sampling signal to obtain a standard digital sampling signal so as to transmit the standard digital sampling signal to the monitoring equipment;
the monitoring equipment connected with the processing module is used for calculating the output voltage value of the primary equipment according to the received standard digital sampling signal;
the data acquisition module and the processing module are separated by a preset distance.
Preferably, the method further comprises the following steps:
and the signal adjusting module is arranged between the voltage dividing module and the data acquisition module and is used for adjusting the low-voltage signal output by the voltage dividing module so as to reach the input range of the data acquisition module.
Preferably, the processing module is specifically configured to convert the digital sampling signal into ethernet data and transmit the ethernet data to the monitoring device.
Preferably, the sampling module is an a/D conversion module.
Preferably, the voltage dividing ratio of the voltage dividing module is Q: 1, Q is greater than 3000 and less than 4000.
Preferably, N optical fibers are connected between the data acquisition module and the processing module;
the data acquisition module is specifically used for sampling the low-voltage signal output by the voltage division module to obtain a digital sampling signal, and simultaneously transmitting the digital sampling signal to the processing module through N paths of optical fibers, wherein N is not less than 1.
Preferably, the number of the data acquisition modules is M, and M is not less than 1;
the number of the processing modules is M, and the processing modules correspond to the data acquisition modules one by one;
the monitoring device is specifically configured to calculate a voltage value of the primary device according to the standard digital sampling signals output by the M processing modules.
The application provides a data acquisition system, including partial pressure module, data acquisition module, processing module and monitoring facilities, through carrying out step-down, sampling and formatting to the voltage of primary equipment output, thereby monitoring facilities can calculate the output voltage of primary equipment according to standard digital sampling signal, thereby can realize the real-time supervision to the output voltage of primary equipment, with the security that improves the electric wire netting. In addition, the voltage division module and the data acquisition module are separated by a preset distance, when the value of the preset distance is large, the electromagnetic interference among the modules can be effectively reduced, and the accuracy of measuring the output voltage of primary equipment is further improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a block diagram of a data acquisition system according to the present invention;
fig. 2 is a block diagram of another data acquisition system according to the present invention.
Detailed Description
The core of the invention is to provide a data acquisition system which can realize the real-time monitoring of the output voltage of primary equipment so as to improve the safety of a power grid. In addition, when the value of the preset distance is larger, the electromagnetic interference among the modules can be effectively reduced, and the accuracy of measuring the output voltage of primary equipment is further improved.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a block diagram of a data acquisition system provided in the present invention, the system includes:
the voltage division module 1 is connected with the primary equipment and is used for carrying out voltage reduction processing on the output voltage of the primary equipment to obtain a low-voltage signal;
the data acquisition module 2 is connected with the voltage division module 1 and is used for sampling the low-voltage signal output by the voltage division module 1 to obtain a digital sampling signal;
the processing module 3 is connected with the output end of the data acquisition module 2 and is used for formatting the digital sampling signal to obtain a standard digital sampling signal so as to transmit the standard digital sampling signal to the monitoring equipment 4;
the monitoring device 4 connected with the processing module 3 is used for calculating the output voltage value of the primary device according to the received standard digital sampling signal;
the data acquisition module 2 and the processing module 3 are separated by a preset distance.
Considering that the output voltage of the primary equipment is high voltage of kilovolt level, if the output voltage of the primary equipment fluctuates, safety accidents are easy to happen, and the safety of a power grid is threatened. Therefore, it is necessary to provide a data acquisition system to accurately measure the output voltage value of a primary device.
Therefore, the application provides a data acquisition system, which comprises a voltage division module 1, a data acquisition module 2, a processing module 3 and a monitoring device 4 which are sequentially connected with primary equipment, wherein the voltage division module, the data acquisition module 2, the processing module 3 and the monitoring device 4 are respectively used for carrying out voltage reduction processing, sampling processing and formatting processing on the output voltage of the primary equipment, and finally, standard digital sampling signals after the formatting processing are transmitted to the monitoring device 4, so that the monitoring device 4 calculates the output voltage value of the sequential devices according to the received standard digital sampling signal to realize the real-time monitoring of the output voltage of the primary device, then, according to the real-time monitoring result of the output voltage of the primary equipment, a corresponding control instruction is sent to the working personnel, the working personnel can carry out corresponding work such as debugging or maintenance on the primary equipment according to the control instruction, and the like, so that the safety and the reliability of the operation of the primary equipment are ensured.
It should be noted that, in the present application, the voltage dividing module 1 and the processing module 3 are separated by a preset distance, and when the value of the preset distance is large, the electromagnetic interference between the modules can be effectively reduced, and the accuracy of measuring the output voltage of the primary device is further improved. Specifically, partial pressure module 1 and data acquisition module 2 and primary equipment in this application all set up in the distribution equipment room, can realize the partial pressure on the spot to the output voltage of primary equipment, and processing module 3 and monitoring facilities 4 all set up with the secondary equipment room, through setting up equipment respectively in two different equipment rooms, have reduced the load of each equipment room relatively, and the interference between each module also can reduce greatly. In addition, the specific implementation manner may be a resistor divider, a resistor-capacitor divider, etc., and the present application is not particularly limited thereto.
In conclusion, the data acquisition system in the application can realize real-time monitoring of the output voltage of the primary equipment so as to improve the safety of a power grid. And when the preset distance is larger, the electromagnetic interference among the modules can be effectively reduced, and the accuracy of measuring the output voltage of primary equipment is further improved.
On the basis of the above-described embodiment:
referring to fig. 2, fig. 2 is a block diagram of another data acquisition system according to the present invention.
As a preferred embodiment, the method further comprises the following steps:
and the signal adjusting module 5 is arranged between the voltage dividing module 1 and the data acquisition module 2 and is used for adjusting the low-voltage signal output by the voltage dividing module 1 so as to reach the input range of the data acquisition module 2.
Considering that the low-voltage signal output by the voltage dividing module 1 may not be in the input range of the data acquisition module 2, the signal adjusting module 5 is further arranged between the voltage dividing module 1 and the data acquisition module 2, and the analog low-voltage signal output by the voltage dividing module 1 is converted into the range of the input signal required by the data acquisition module 2.
It should be noted that, the signal adjusting module 5 in the present application may include one or a combination of multiple of a filtering module, a following module and a transforming module, where the filtering module is used to filter out high frequency waves, noise waves and the like in the analog low-voltage signal, the following module is used to increase the driving capability of the low-voltage signal, and the transforming module is used to transform the voltage of the low-voltage signal to the input voltage range of the data collecting module 2.
In conclusion, in the embodiment, the sampling accuracy of the data acquisition module 2 in the present application can be improved, and the accuracy of monitoring the output voltage of the primary device is further improved.
As a preferred embodiment, the processing module 3 is specifically configured to convert the digital sampling signal into ethernet data and transmit the ethernet data to the monitoring device 4.
Considering that the data received by the monitoring device 4 is ethernet data, the present application converts the digital sampling signal into ethernet data and transmits the ethernet data to the monitoring device 4.
It should be noted that the data received by the monitoring device 4 in this application is not limited to ethernet data, and may also be other types of data, and the processing module 3 changes the data type of the digital sampling limit number conversion adaptively according to the data type received by the monitoring module, and this application is not limited specifically herein, and is specifically determined according to the actual situation.
In summary, the processing module 3 in this embodiment can convert the digital sampling signal into the data type required by the monitoring device 4 for receiving by the monitoring device 4.
In a preferred embodiment, the sampling module is an a/D conversion module.
The sampling module in the present application may be, but is not limited to, an a/D conversion module, and may also be other sampling modules, and the present application is not limited specifically herein.
As a preferred embodiment, the voltage dividing ratio of the voltage dividing module 1 is Q: 1, Q is greater than 3000 and less than 4000.
Specifically, the output voltage of the primary equipment is 10-35 KV. The voltage dividing ratio of the voltage dividing module 1 is preferably Q: 1, wherein, Q value is 3000 ~ 4000, and concrete implementation mode can be resistance divider, resistance-capacitance divider etc. and this application does not do special restriction here.
Of course, for other levels of voltage, the voltage division ratio of the voltage division module 1 is not limited to 3000-4000: 1, other partial pressure ratios may be selected, and the present application is not limited to this.
As a preferred embodiment, N optical fibers are connected between the data acquisition module 2 and the processing module 3;
the data acquisition module 2 is specifically used for sampling the low-voltage signal output by the voltage division module 1 to obtain a digital sampling signal, and simultaneously, the digital sampling signal is transmitted to the processing module 3 through N paths of optical fibers, wherein N is not less than 1.
Considering that when one optical fiber is used for signal transmission between the data acquisition module 2 and the processing module 3, if the one optical fiber has a fault, the reliability of digital sampling signal transmission cannot be ensured, at this time, the processing module 3 cannot receive the digital sampling signal, that is, the monitoring device 4 at the rear end cannot realize real-time monitoring of the output voltage of the primary device.
For solving above-mentioned technical problem, this application is connected with N way optic fibre between data acquisition module 2 and processing module 3 to with digital acquisition signal simultaneously through N way optic fibre transmission to processing module 3, when certain optic fibre breaks down or damages wherein, processing module 3 still can receive digital acquisition signal, thereby realizes monitoring equipment 4 to the real-time supervision of primary equipment's output voltage, has improved signal transmission's reliability. Preferably, N in this application is taken to be 2.
As a preferred embodiment, the number of the data acquisition modules 2 is M, and M is not less than 1;
the number of the processing modules 3 is M, and the processing modules correspond to the data acquisition modules 2 one by one;
the monitoring device is specifically configured to calculate a voltage value of the primary device according to the standard digital sampling signals output by the M processing modules 3.
Specifically, data acquisition module 2 in this application can be M, gather the output signal of partial pressure module 1 respectively, obtain M digital acquisition signal, then processing module 3 is M digital acquisition signal conversion respectively and is M standard digital signal and send to monitoring facilities 4, monitoring facilities 4 calculates the average value of the voltage value of primary equipment according to M standard digital sampling signal, and regard this average value as the output voltage value of primary equipment who monitors, improve the accuracy of the output voltage value of monitoring primary equipment.
The number of the data acquisition modules 2 and the number of the processing modules 3 may be set as required, preferably, M in the present application is 3, and may also be other numerical values, and the present application is not particularly limited herein.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A data acquisition system, comprising:
the voltage division module is connected with the primary equipment and used for carrying out voltage reduction processing on the output voltage of the primary equipment to obtain a low-voltage signal;
the data acquisition module is connected with the voltage division module and is used for sampling the low-voltage signal output by the voltage division module to obtain a digital sampling signal;
the processing module is connected with the output end of the data acquisition module and is used for formatting the digital sampling signal to obtain a standard digital sampling signal so as to transmit the standard digital sampling signal to the monitoring equipment;
the monitoring equipment connected with the processing module is used for calculating the output voltage value of the primary equipment according to the received standard digital sampling signal;
the data acquisition module and the processing module are separated by a preset distance.
2. The data acquisition system of claim 1, further comprising:
and the signal adjusting module is arranged between the voltage dividing module and the data acquisition module and is used for adjusting the low-voltage signal output by the voltage dividing module so as to reach the input range of the data acquisition module.
3. The data acquisition system of claim 1, wherein the processing module is specifically configured to convert the digital sampled signal to ethernet data and transmit the ethernet data to the monitoring device.
4. The data acquisition system of claim 1 wherein the sampling module is an a/D conversion module.
5. The data acquisition system of claim 1, wherein the voltage divider module has a voltage divider ratio of Q: 1, Q is greater than 3000 and less than 4000.
6. The data acquisition system according to any one of claims 1 to 5, wherein N optical fibers are connected between the data acquisition module and the processing module;
the data acquisition module is specifically used for sampling the low-voltage signal output by the voltage division module to obtain a digital sampling signal, and simultaneously transmitting the digital sampling signal to the processing module through N paths of optical fibers, wherein N is not less than 1.
7. The data acquisition system of any one of claims 1-5 wherein the number of data acquisition modules is M, M being not less than 1;
the number of the processing modules is M, and the processing modules correspond to the data acquisition modules one by one;
the monitoring device is specifically configured to calculate a voltage value of the primary device according to the standard digital sampling signals output by the M processing modules.
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| CN202110161202.4A CN112964927A (en) | 2021-02-05 | 2021-02-05 | Data acquisition system |
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| CN202110161202.4A CN112964927A (en) | 2021-02-05 | 2021-02-05 | Data acquisition system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201876484U (en) * | 2010-11-05 | 2011-06-22 | 重庆市电力公司綦南供电局 | High-voltage signal conditioning and data acquisition device |
| CN202083795U (en) * | 2011-06-21 | 2011-12-21 | 成都远望科技有限责任公司 | Radar data acquisition card based on CPCI (compact peripheral component interconnect) |
| CN102707133A (en) * | 2012-06-12 | 2012-10-03 | 深圳世强电讯有限公司 | Device, system and method for measuring frequency-variable alternating current voltage |
| CN103698596A (en) * | 2014-01-10 | 2014-04-02 | 三峡大学 | Device and method for measuring high voltage of electric power system |
| CN205427035U (en) * | 2016-02-25 | 2016-08-03 | 宁波帝洲自动化科技有限公司 | High voltage sampling circuit of isolated form |
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2021
- 2021-02-05 CN CN202110161202.4A patent/CN112964927A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201876484U (en) * | 2010-11-05 | 2011-06-22 | 重庆市电力公司綦南供电局 | High-voltage signal conditioning and data acquisition device |
| CN202083795U (en) * | 2011-06-21 | 2011-12-21 | 成都远望科技有限责任公司 | Radar data acquisition card based on CPCI (compact peripheral component interconnect) |
| CN102707133A (en) * | 2012-06-12 | 2012-10-03 | 深圳世强电讯有限公司 | Device, system and method for measuring frequency-variable alternating current voltage |
| CN103698596A (en) * | 2014-01-10 | 2014-04-02 | 三峡大学 | Device and method for measuring high voltage of electric power system |
| CN205427035U (en) * | 2016-02-25 | 2016-08-03 | 宁波帝洲自动化科技有限公司 | High voltage sampling circuit of isolated form |
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