There is no limit to creativity, and the instrument is invented. Today, we introduce a national invention patent for authorization, a meter device based on wireless public network communication in the smart grid. The patent was filed by Nanjing Shilong Intelligent Technology Co., Ltd. and was authorized to be announced on March 22, 2017.
Description
The invention relates to an electric meter device, and more particularly to an electric meter device based on wireless public network communication in a smart grid.
Background of the invention
In recent years, a large number of researches have been carried out on the application of embedded devices in power system technology in China, and power reactive control systems and distribution network economic operation systems have been successively developed. However, in the development of these systems, the interface problem between the inference engine and other systems has long been ignored. The application in the power system is not to replace the traditional numerical computing application, database application, etc. with artificial intelligence, but to combine with each other and exert their own advantages. Therefore, how to implement the interface with other traditional power systems is an urgent problem to be solved.
In the development of wireless public network communication technology in power system, with the advancement of technology, the meter reading method of electric energy meter in power system has also evolved from on-site manual meter reading to remote automatic meter reading. At present, there are many techniques for meter reading, such as RS485 bus, infrared and power line carrier. These meter reading technologies are relatively mature, but their applications have their own limitations. For example, RS485 bus meter reading requires wiring, and the transmission distance cannot be More than 1200 meters, infrared meter reading needs manual meter reading on site, and power carrier meter reading is limited due to electromagnetic interference.
Summary of the invention
The object of the present invention is to provide an electric meter device based on wireless public network communication in a smart grid without wiring, long transmission distance and no external interference, in view of the deficiencies of the prior art.
An electric meter device based on wireless public network communication in a smart grid according to the present invention comprises a microcontroller and a wireless public network communication device and an energy metering device respectively connected to the microcontroller, and the wireless public network communication The device includes a wireless communication module and a customer identification card uniquely identified by the onboard user, the customer identification card is in two-way communication connection with the wireless communication module, and the wireless communication module is in two-way communication connection with the microcontroller; The device adopts the chip ADE7758 to communicate bidirectionally with the microcontroller, and at the same time, the periphery of the chip ADE7758 is provided with a three-phase current detecting circuit and a three-phase voltage detecting circuit.
Figure is a frame diagram of an electric meter device based on wireless public network communication in a smart grid provided by the present invention
A further limitation of the technical solution of the present invention is that the microcontroller is an ARM microcontroller, and the chip NUC120VE3AN is used.
Further, the wireless communication module uses a GPRS and/or CDMA communication module, the GRPS communication module uses a chip MC52iR3, and the CDMA communication module uses a chip MC323-a. The customer identification card is a SIM card. The periphery of the microcontroller is also provided with an RS485/232 interface. The periphery of the microcontroller is further provided with an infrared transceiver interface.
The utility model has the beneficial effects that the electric meter device based on the wireless public network communication in the smart grid provided by the invention realizes the electric energy metering device by using the popular wireless public network through the implanted GPRS/CDMA wireless public network communication module. wireless transmission of measurement data, no wiring, long distance transmission, free from outside interference; the present technology is mature, its wide network coverage, real-time online, according to traffic charges, rates continue to drop, and the unlimited distance and space This makes wireless communication technology more and more widely used in the power meter reading industry.
Description
The invention relates to an electric meter device, and more particularly to an electric meter device based on wireless public network communication in a smart grid.
Background of the invention
In recent years, a large number of researches have been carried out on the application of embedded devices in power system technology in China, and power reactive control systems and distribution network economic operation systems have been successively developed. However, in the development of these systems, the interface problem between the inference engine and other systems has long been ignored. The application in the power system is not to replace the traditional numerical computing application, database application, etc. with artificial intelligence, but to combine with each other and exert their own advantages. Therefore, how to implement the interface with other traditional power systems is an urgent problem to be solved.
In the development of wireless public network communication technology in power system, with the advancement of technology, the meter reading method of electric energy meter in power system has also evolved from on-site manual meter reading to remote automatic meter reading. At present, there are many techniques for meter reading, such as RS485 bus, infrared and power line carrier. These meter reading technologies are relatively mature, but their applications have their own limitations. For example, RS485 bus meter reading requires wiring, and the transmission distance cannot be More than 1200 meters, infrared meter reading needs manual meter reading on site, and power carrier meter reading is limited due to electromagnetic interference.
Summary of the invention
The object of the present invention is to provide an electric meter device based on wireless public network communication in a smart grid without wiring, long transmission distance and no external interference, in view of the deficiencies of the prior art.
An electric meter device based on wireless public network communication in a smart grid according to the present invention comprises a microcontroller and a wireless public network communication device and an energy metering device respectively connected to the microcontroller, and the wireless public network communication The device includes a wireless communication module and a customer identification card uniquely identified by the onboard user, the customer identification card is in two-way communication connection with the wireless communication module, and the wireless communication module is in two-way communication connection with the microcontroller; The device adopts the chip ADE7758 to communicate bidirectionally with the microcontroller, and at the same time, the periphery of the chip ADE7758 is provided with a three-phase current detecting circuit and a three-phase voltage detecting circuit.
Figure is a frame diagram of an electric meter device based on wireless public network communication in a smart grid provided by the present invention
A further limitation of the technical solution of the present invention is that the microcontroller is an ARM microcontroller, and the chip NUC120VE3AN is used.
Further, the wireless communication module uses a GPRS and/or CDMA communication module, the GRPS communication module uses a chip MC52iR3, and the CDMA communication module uses a chip MC323-a. The customer identification card is a SIM card. The periphery of the microcontroller is also provided with an RS485/232 interface. The periphery of the microcontroller is further provided with an infrared transceiver interface.
The utility model has the beneficial effects that the electric meter device based on the wireless public network communication in the smart grid provided by the invention realizes the electric energy metering device by using the popular wireless public network through the implanted GPRS/CDMA wireless public network communication module. wireless transmission of measurement data, no wiring, long distance transmission, free from outside interference; the present technology is mature, its wide network coverage, real-time online, according to traffic charges, rates continue to drop, and the unlimited distance and space This makes wireless communication technology more and more widely used in the power meter reading industry.
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