CN212847138U - Mutual inductor signal acquisition device based on wireless transmission technology - Google Patents
Mutual inductor signal acquisition device based on wireless transmission technology Download PDFInfo
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- CN212847138U CN212847138U CN202022362782.7U CN202022362782U CN212847138U CN 212847138 U CN212847138 U CN 212847138U CN 202022362782 U CN202022362782 U CN 202022362782U CN 212847138 U CN212847138 U CN 212847138U
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Abstract
The utility model provides a mutual-inductor signal pickup assembly based on wireless transmission technique, include: the AD acquisition module is used for acquiring signals of the mutual inductor; the FPGA control module is used for receiving and processing the mutual inductor signals acquired by the AD acquisition module; the wireless communication module is used for sending the control signal of the FPGA control module to the peripheral electrical equipment and receiving the control signal of the peripheral electrical equipment to the FPGA control module; the upper computer is used for receiving the control signal transmitted by the wireless communication module and sending the control signal to the wireless communication module; the power supply module is used for providing working voltage for the AD acquisition module, the FPGA control module and the wireless communication module; the AD acquisition module is electrically connected with the FPGA control module, the FPGA control module is electrically connected with the wireless communication module, and the FPGA control module is communicated with the upper computer and the peripheral electrical equipment through the wireless communication module. The utility model discloses realize the wireless transmission of mutual-inductor signal, reduce the misconnection probability, improve electrical measurement equipment and relay protection device's reliability.
Description
Technical Field
The utility model relates to an electric power system detects technical field, concretely relates to mutual-inductor signal pickup assembly based on wireless transmission technology.
Background
The mutual inductor is very important measuring equipment in a power system, is widely applied to various voltage grades of the power system, and plays an irreplaceable role in measurement and relay protection. With the continuous improvement of the voltage grade and the continuous increase of the power utilization capacity of the power system, the performance requirements on all aspects of the mutual inductor are higher and higher. Especially, the accuracy of mutual inductor signal acquisition directly influences the accuracy of electric measurement such as electric energy metering of an electric power system and the reliability of the action of a relay protection device.
At present, the transmission of mutual inductor signals mainly depends on cables and optical fibers for transmission, and meanwhile, the existing mutual inductor signal acquisition device basically adopts a bus mode for connection and communication, so that a large number of connecting wires are needed for bus layout.
Although optical fiber communication can resist electromagnetic interference, has small signal interference and good transmission quality, the cutting and the connection of optical fibers need special tools, equipment and technologies; the texture is crisp, the mechanical strength is poor, and the product is easy to be damaged by external force; the optical cable and the cable are laid in the same pit in the common engineering field, the operation environment is poor, and the maintenance is difficult; and the bending radius of the optical fiber cable cannot be too small, the branching and coupling are not flexible, the requirements on materials and processes for manufacturing the optical cable are high, the technology is complex, and the quality standard is strict. The above disadvantages affect the quality and transmission efficiency of optical fiber communication to different degrees.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problem that above-mentioned prior art exists, the utility model provides a mutual-inductor signal pickup assembly based on wireless transmission technology.
The technical scheme of the utility model is that:
mutual-inductor signal pickup assembly based on wireless transmission technique includes:
the AD acquisition module is used for acquiring signals of the mutual inductor;
the FPGA control module is used for receiving and processing the mutual inductor signals acquired by the AD acquisition module;
the wireless communication module is used for sending the control signal of the FPGA control module to the peripheral electrical equipment and receiving the control signal of the peripheral electrical equipment to the FPGA control module;
the upper computer is used for receiving the control signal transmitted by the wireless communication module and sending the control signal to the wireless communication module;
the power supply module is used for providing working voltage for the AD acquisition module, the FPGA control module and the wireless communication module;
AD acquisition module is connected with FPGA control module electricity, FPGA control module is connected with wireless communication module electricity, FPGA control module communicates with host computer and peripheral electrical equipment through wireless communication module, AD acquisition module, FPGA control module and wireless communication module are connected to power module's output.
As a further technical scheme of the utility model does, AD collection module adopts the ADS8365 chip of chooseing for use TI company.
As a further technical scheme of the utility model does, FPGA control module is the FPGA chip of LX product XC6SLX9 model.
As a further technical solution of the utility model is, wireless communication module is CC3200 wireless communication chip.
As a further technical scheme of the utility model does, power module includes 3.3V supply circuit and 1.2V supply circuit.
The utility model has the advantages that:
1. the utility model realizes the wireless transmission of the mutual inductor signal, and reduces some problems caused by the transmission of the signal by the optical cable and the cable; the device is flexibly installed, and the production and labor cost is greatly reduced.
2. By adopting the wireless transmission of the mutual inductor signals, the error wiring probability can be reduced, the metering faults can be reduced, the links of a metering system can be reduced, and the reliability of the electrical measuring equipment and the relay protection device can be improved.
3. The device can realize the bidirectional transmission of signals through the wireless communication module, not only the mutual inductor can send the signal to peripheral electrical equipment and host computer such as measurement, protection, the device can also receive the control signal that peripheral electrical equipment and host computer sent to realize the high efficiency, accurate, the real-time transmission of signal.
4. The module transmits the mutual inductor signals to intelligent terminals such as an upper computer through wireless communication, and real-time monitoring of the mutual inductor signals can be achieved.
Drawings
Fig. 1 is a structural diagram of a mutual inductor signal acquisition device based on a wireless transmission technology provided by the utility model;
fig. 2 is a circuit diagram of the AD acquisition module provided by the present invention;
fig. 3 is a schematic diagram of the connection between the AD acquisition module and the FPGA control module provided by the present invention;
fig. 4 is a circuit diagram of the level shift circuit according to the present invention.
Detailed Description
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention.
Referring to fig. 1, the structure diagram of the transformer signal acquisition device based on the wireless transmission technology provided by the utility model is shown;
as shown in fig. 1, the mutual inductor signal acquisition device based on the wireless transmission technology includes:
the AD acquisition module 101 is used for acquiring a transformer signal 106;
the FPGA control module 102 is used for receiving and processing the mutual inductor signals acquired by the AD acquisition module;
the wireless communication module 103 is configured to send a control signal of the FPGA control module to the peripheral electrical device 107 and receive a control signal of the peripheral electrical device to the FPGA control module;
the upper computer 104 is used for receiving the control signal transmitted by the wireless communication module and sending the control signal to the wireless communication module;
the power supply module 105 is used for providing working voltage for the AD acquisition module, the FPGA control module and the wireless communication module;
AD acquisition module is connected with FPGA control module electricity, FPGA control module is connected with wireless communication module electricity, FPGA control module communicates with host computer and peripheral electrical equipment through wireless communication module, AD acquisition module, FPGA control module and wireless communication module are connected to power module's output.
The utility model provides a mutual inductor signal acquisition device based on wireless transmission technology, which is characterized in that an AD acquisition module acquires a mutual inductor input signal, converts an analog sampling signal into a digital sampling signal and outputs the digital signal; the FPGA control module performs data processing and operation on the digital signals output by the AD acquisition module and controls the AD acquisition module to sample; the FPGA control module is connected with a wireless communication module, signals are sent to peripheral electrical equipment such as metering and protection equipment and an upper computer in a wireless transmission mode, meanwhile, the mutual inductor signal acquisition module also receives control signals output by the peripheral electrical equipment and the upper computer, and controls the operation and work of a mutual inductor signal acquisition system device according to the control signals, so that the bidirectional control of signal transmission is realized, and the efficient, accurate and real-time transmission of the mutual inductor signals is realized.
Referring to fig. 2, a circuit diagram of an AD acquisition module according to the present invention is shown;
in the embodiment of the invention, the AD acquisition module adopts an ADS8365 chip of TI company, 6 independent analog-to-digital converters are arranged in the ADS8365 chip, data conversion among channels is not interfered with each other, the mutual influence between analog signals and digital signals is reduced, and the reliability of data conversion is improved; the ADS8365 channels are 16-bit digital signals with the sampling rate of 250KSPS, the ADS8365 channels output in parallel, the resolution is high, and the sampling of the transformer signals can be realized.
Referring to fig. 3, a schematic diagram of the connection between the AD acquisition module and the FPGA control module provided in the present invention is shown;
in the embodiment of the invention, the FPGA control module is a programmable logic device, has high running speed and abundant digital interfaces, and is convenient to develop and use, the FPGA selects an LX product XC6SLX9 as a main digital signal processing unit, the ADS8365 sampling module is controlled by a time sequence, the obtained digital signals are filtered and coded, and the FPGA carries out serial-parallel conversion on the processed data through feedback information of the wireless communication module and transmits the data to the wireless communication module.
In the embodiment of the invention, the CC3200 wireless communication chip is selected as the wireless communication module, the CC3200 and the FPGA control module can communicate in a parallel data transmission mode, the wireless MCU is a wireless MCU integrating a high-performance ARMCortex-M4 kernel, has a Wi-Fi function and can realize the wireless transmission of the mutual inductor.
Referring to fig. 4, a level shift circuit diagram according to the present invention is shown.
In the embodiment of the invention, the power supply level of the FPGA control module has two grades of 3.3V and 1.2V, and the conversion of the power supply level adopts a power supply chip with adjustable MP1482 voltage. The ADS8365 adopts two power supply sources, the analog part adopts +5V, and the digital part adopts + 3.3V; because the level of the input/output pin of the ADS8365 digital part is +3.3V, which is the same as the level of the common IO port of the FPGA control module, the ADS8365 and the FPGA pin can be directly connected through exclusion, and a level conversion chip is not needed; since the wireless communication module CC3200 has the DC-DC voltage converter integrated therein, the power supply of the CC3200 may be supplied by a relatively unstable battery, or may be supplied by a voltage of 3.3V provided by the DC-DC voltage conversion chip.
The utility model discloses a mutual-inductor signal acquisition module has been designed based on wireless transmission technology, has realized the wireless transmission of mutual-inductor signal, has reduced some problems that the signal was brought by optical cable and cable transmission. The device is flexibly installed, material space resources can be saved, and production and labor cost is greatly reduced. By adopting the wireless transmission of the mutual inductor signals, the error wiring probability can be reduced, the metering faults can be reduced, the links of a metering system can be reduced, and the reliability of the electrical measuring equipment and the relay protection device can be improved. The device can realize the bidirectional transmission of signals through the wireless communication module, not only the mutual inductor can send the signal to peripheral electrical equipment and host computer such as measurement, protection, the device can also receive the control signal that peripheral electrical equipment and host computer sent to realize the high efficiency, accurate, the real-time transmission of signal. The module transmits the mutual inductor signals to intelligent terminals such as an upper computer through wireless communication, and real-time monitoring of the mutual inductor signals can be achieved.
The utility model provides a mutual-inductor signal acquisition device based on wireless transmission technique, the transmission of mutual-inductor signal adopts wireless communication technique, transmits the mutual-inductor signal to intelligent terminals such as host computer through wireless module, can realize the real-time supervision of mutual-inductor signal, can realize the both-way transmission and the control of signal, is convenient for install reduce cost; the application in the aspect of electric energy metering can reduce the probability of false wiring, reduce metering faults and reduce metering system links.
The present invention has been described in detail, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art. Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims.
Claims (5)
1. Mutual-inductor signal pickup assembly based on wireless transmission technique, its characterized in that includes:
the AD acquisition module is used for acquiring signals of the mutual inductor;
the FPGA control module is used for receiving and processing the mutual inductor signals acquired by the AD acquisition module;
the wireless communication module is used for sending the control signal of the FPGA control module to the peripheral electrical equipment and receiving the control signal of the peripheral electrical equipment to the FPGA control module;
the upper computer is used for receiving the control signal transmitted by the wireless communication module and sending the control signal to the wireless communication module;
the power supply module is used for providing working voltage for the AD acquisition module, the FPGA control module and the wireless communication module;
AD acquisition module is connected with FPGA control module electricity, FPGA control module is connected with wireless communication module electricity, FPGA control module communicates with host computer and peripheral electrical equipment through wireless communication module, AD acquisition module, FPGA control module and wireless communication module are connected to power module's output.
2. The mutual inductor signal acquisition device based on wireless transmission technology as claimed in claim 1, wherein the AD acquisition module employs ADs8365 chip of TI company.
3. The mutual inductor signal acquisition device based on the wireless transmission technology as claimed in claim 1, wherein the FPGA control module is an FPGA chip of model LX product XC6SLX 9.
4. The mutual inductor signal acquisition device based on wireless transmission technology as claimed in claim 1, wherein the wireless communication module is a CC3200 wireless communication chip.
5. The mutual inductor signal acquisition device based on the wireless transmission technology as claimed in claim 1, wherein the power supply module comprises a 3.3V power supply circuit and a 1.2V power supply circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022362782.7U CN212847138U (en) | 2020-10-21 | 2020-10-21 | Mutual inductor signal acquisition device based on wireless transmission technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022362782.7U CN212847138U (en) | 2020-10-21 | 2020-10-21 | Mutual inductor signal acquisition device based on wireless transmission technology |
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| Publication Number | Publication Date |
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| CN212847138U true CN212847138U (en) | 2021-03-30 |
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| CN202022362782.7U Active CN212847138U (en) | 2020-10-21 | 2020-10-21 | Mutual inductor signal acquisition device based on wireless transmission technology |
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- 2020-10-21 CN CN202022362782.7U patent/CN212847138U/en active Active
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