CN215679526U - Intelligent fee control metering terminal based on cloud - Google Patents
Intelligent fee control metering terminal based on cloud Download PDFInfo
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- CN215679526U CN215679526U CN202121941014.5U CN202121941014U CN215679526U CN 215679526 U CN215679526 U CN 215679526U CN 202121941014 U CN202121941014 U CN 202121941014U CN 215679526 U CN215679526 U CN 215679526U
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Abstract
The utility model relates to the field of power grid power equipment, and discloses an intelligent charge control metering terminal based on a cloud end, which comprises a charge control metering base table, a communication gateway unit, a cloud end server and an upper computer, wherein the charge control metering base table is used for collecting, calculating and storing electric energy data and interacting data with the communication gateway unit, the communication gateway unit realizes the reading of the collected data with the charge control metering base table through an RS485 interface, the communication gateway unit uploads the electric energy data to the cloud end server through MQTT and a private protocol and transmits an instruction sent by the cloud end server to the charge control metering base table, and the cloud end server is connected with the upper computer and pushes the electric energy data to the upper computer for display. Compared with the prior art, the utility model changes the traditional electric meter operation and maintenance mode of manual patrol reading and hot line repair, realizes scale centralized reading, reduces labor intensity and operation and maintenance cost, and brings great convenience to customers.
Description
Technical Field
The utility model relates to the technical field of power grid power equipment, in particular to an intelligent fee control metering terminal based on a cloud.
Background
The development of the smart power grid in China is different day by day, the national strong smart power grid is built like a fire, the demand of the smart electric energy meter at a user side is greatly increased, the electric energy metering check management and data function application of a terminal user also enter a new cloud computing stage, and higher requirements are put forward on cloud application. In the measurement function of the traditional electric meter, the measurement function is limited, the measurement precision is low, the overload capacity is weak, the performance is stable and the reliability is low, the fee control function cannot be remotely transmitted, and the fee control condition cannot be remotely checked in real time. Most of the traditional ammeter operation and maintenance modes are manual patrol reading, hot line repair and the like, scale centralized reading cannot be realized, the labor intensity is high, the operation and maintenance cost is high, and great inconvenience is brought to customers. Therefore, the requirements for cloud-based data communication, calculation and interaction functions are more and more complex and powerful, which puts higher requirements on the design of modern smart meters.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: aiming at the problems in the prior art, the utility model provides the intelligent cost control metering terminal based on the cloud, changes the traditional electric meter operation and maintenance mode of manual patrol, reading and hot line repair, realizes scale collection reading, reduces the labor intensity and the operation and maintenance cost, and brings great convenience to customers.
The technical scheme is as follows: the utility model provides an intelligent charge control metering terminal based on a cloud end, which comprises a charge control metering base table, a communication gateway unit, a cloud end server and an upper computer, wherein the charge control metering base table is used for collecting, calculating and storing electric energy data and interacting data with the communication gateway unit, the communication gateway unit realizes the reading of the collected data with the charge control metering base table through an RS485 interface, the communication gateway unit uploads the electric energy data to the cloud end server through MQTT and a private protocol and transmits an instruction sent by the cloud end server to the charge control metering base table, and the cloud end server is connected with the upper computer and pushes the electric energy data to the upper computer for displaying.
Furthermore, the charge control metering base table comprises a voltage and current sampling circuit, an SOC master control metering circuit, an EEPROM (electrically erasable programmable read-only memory), an RS485 interface, a switching power supply circuit and a load relay drive; voltage and current sampling circuit with SOC master control measurement circuit input is connected, gathers the transmission of power consumption real-time parameter extremely SOC master control measurement circuit, SOC master control measurement circuit respectively with EEPROM storage, RS485 interface, load relay drive and switching power supply circuit connect, switching power supply circuit provides electric power for spending accuse measurement base table, power consumption real-time parameter save in the EEPROM storage, SOC master control measurement circuit pass through RS485 communication interface with the mutual information of high in the clouds server realizes data transmission and spends accuse function.
Further, the SOC master control metering circuit adopts a metering SOC chip G80F924, and the metering SOC chip G80F924 is connected with an EEPROM memory chip through an I2C port.
Further, the voltage and current sampling circuit comprises a voltage sampling circuit and a current sampling circuit, wherein the output end of the voltage sampling circuit is connected with pins VP and VN of the SOC chip G80F924, and the current sampling circuit is connected with pins I2P and I2N of the SOC chip G80F 924.
Further, the RS485 interface is connected with an HM3085 chip through an optical coupling and is connected with a UART port of the SOC chip G80F 924.
Further, the switching power supply circuit adopts a chip PN8130H as a core, and the switching power supply circuit respectively outputs isolated 5VDC, non-isolated 3.3VDC and 12V voltage, wherein the 5V DC voltage meets the power supply requirement of the communication gateway unit, 3.3V is used for the SOC master control metering circuit, and 12V is used for the load relay to drive and supply power.
Furthermore, the communication gateway unit comprises a main control MCU, an onboard embedded communication module and a data storage module, wherein the onboard embedded communication module and the data storage module are connected with the main control MCU, the main control MCU and the onboard embedded communication module realize communication through a TTL-UART interface, the main control MCU controls the onboard embedded wireless communication module through an AT instruction, and remote data interaction with the cloud server is realized through the onboard embedded communication module.
Furthermore, the communication gateway unit and the fee control metering base meter are installed in the fee control metering base meter in a butt joint mode through a pin header female electronic connector.
Has the advantages that:
1. the utility model provides an intelligent cost control metering terminal, and the metering function of the intelligent cost control metering terminal has the advantages of high measurement precision, strong overload capacity, stable and reliable performance, wide working voltage range, low self power consumption and the like; the volume is small, the weight is light, the modularization is realized, the installation is easy, and the device can be directly installed in a distribution box; the cloud function can realize real-time remote monitoring of the power utilization state of the user, remote fee control, power utilization information analysis, power utilization scheme optimization, power utilization cost control and the like, can obviously improve the cost performance of a terminal product, and increases market competitiveness.
2. The cost control metering terminal designed by the utility model can be effectively used for single-phase remote cost control intelligent electric energy meter bidding and application occasions outside the management range of a national power grid company, such as application scenes of branch metering of electric energy, related factory intelligent energy efficiency transformation projects, management and assessment of electric energy line loss of enterprises and public institutions, photovoltaic metering monitoring, community and campus electricity utilization supervision and the like in government offices and buildings, and has good social and economic benefits.
Drawings
FIG. 1 is a general design diagram of an intelligent fee-control metering terminal according to the present invention;
FIG. 2 is a schematic block diagram of a cost-controlled metering base table according to the present invention;
FIG. 3 is a SOC master control circuit diagram of the fee control metering base table of the present invention;
FIG. 4 is a circuit diagram of the voltage current sampling of the present invention;
FIG. 5 is a circuit diagram of an RS485 communication interface according to the present invention;
FIG. 6 is a circuit diagram of a switching power supply according to the present invention;
fig. 7 is a circuit diagram of the connection between the gateway and the metering base table according to the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings, and the following embodiments are only used to more clearly illustrate the technical solutions of the present invention, and should not be taken as limiting the scope of the present invention.
The utility model discloses an intelligent fee control metering terminal based on a cloud, which is shown in an attached figure 1 and comprises a fee control metering base table, a communication gateway unit, a cloud server and an upper computer, wherein the upper computer can be a desktop Web client or a mobile phone APP terminal.
The charge control metering base meter is used for collecting, calculating and storing data such as voltage, current, phase, power factor, active power, reactive power, accumulated electric energy and the like, and interacting the data with the communication gateway unit. The communication gateway unit realizes the reading of the collected data through the RS485 interface and the fee-control metering base table, the communication gateway unit serves as a publisher of information, electric energy data are uploaded to the cloud server through MQTT and a private protocol and an instruction sent by the cloud server is forwarded to the fee-control metering base table, and the cloud server is connected with the upper computer and pushes the electric energy data to the upper computer for displaying. The cloud server is equivalent to an MQTT message agent and mainly realizes acquisition, storage and analysis of terminal data, client push and instruction forwarding. The upper computer can realize the functions of login, data subscription, instruction sending, data statement, power utilization historical data curve, information analysis and real-time alarm, platform communication test, database management and the like of the cloud server through an MQTT or HTTP protocol.
Referring to fig. 2 to 6, the charge control metering base table comprises a voltage and current sampling circuit, an SOC master control metering circuit, an LCD display, an EEPROM storage, an RS485 interface, a switching power supply circuit and a load relay drive. The voltage and current sampling circuit is connected with the input end of the SOC master control metering circuit, the real-time power consumption parameters are collected and transmitted to the SOC master control metering circuit, the SOC master control metering circuit processes data according to the requirements of corresponding rates and the like, the result is stored in the EEPROM, and related data can be displayed in real time through LCD display. The SOC master control metering circuit is respectively connected with the EEPROM storage, the RS485 interface, the LCD display, the load relay drive and the switch power supply circuit, the switch power supply circuit provides electric power for the charge control metering base meter, and the SOC master control metering circuit interacts information with the cloud server through the RS485 communication interface to realize data transmission and charge control functions.
The SOC master control metering circuit adopts a special metering SOC chip G80F924 newly promoted by Zhongying electronic company, the chip is a low-power-consumption high-performance single-phase electric energy metering SOC chip, and the functions of single-phase electric energy metering, LCD driving, calendar clock, 8051 core strengthening and the like are integrated on the chip. The embedded electric energy metering module can meter active, reactive and voltage and current effective values and monitor characteristics of a power line such as voltage loss and zero crossing. The active, reactive and voltage and current effective value measurement can be carried out, the measurement error of active electric energy is less than 0.1%, and the dynamic range is more than 2000: 1; the reactive power metering error is less than 0.5 percent, and the dynamic range is more than 1000: 1; the error of the effective value 1000:1 of the voltage and the current is less than 0.5 percent. In addition, the chip is integrated with abundant on-chip peripherals, has various high-reliability power supply modes and low-power consumption power-saving modes, and completely meets the design requirements. The SOC master control metering circuit is shown in figure 3, wherein the SOC is connected with an EEPROM chip through an I2C port.
The voltage and current sampling circuit is shown in figure 4 and comprises a voltage sampling circuit and a current sampling circuit, wherein the output end of the voltage sampling circuit is connected with VP and VN pins of an SOC chip G80F924, and the current sampling circuit is connected with I2P and I2N pins of the SOC chip G80F 924.
The UART port of the SOC master control metering circuit is connected with the HM3085 chip through an optical coupler to form a standard RS485 interface to communicate with the communication gateway unit, and the SOC master control metering circuit has better anti-interference capability.
Referring to the attached figure 6, the switching power supply circuit adopts a switching power supply scheme taking a domestic ultra-low power consumption AC/DC chip PN8130H as a core, and mainly comprises a single-phase half-wave rectifying circuit, an RCD absorption circuit, a PWM control output circuit, an optical coupling isolation voltage negative feedback circuit, an auxiliary power supply circuit and a high-frequency transformer, and provides two paths of power supplies of a main control circuit and a wireless communication circuit which are isolated from each other. The switch power supply circuit respectively outputs isolated 5VDC, non-isolated 3.3VDC and 12V voltage, wherein the 5V DC voltage meets the power supply requirement of the communication gateway unit, the 3.3V is used for the SOC master control metering circuit, and the 12V is used for the load relay to drive and supply power.
The communication gateway unit comprises a main control MCU, an onboard embedded communication module (GPRS/WiFi/NB-IOT) and a data storage module, wherein the onboard embedded communication module and the data storage module are connected with the main control MCU, the main control MCU and the onboard embedded communication module realize communication through a TTL-UART interface, the main control MCU controls the onboard embedded wireless communication module through an AT instruction, and remote data interaction with a cloud server is realized through the onboard embedded communication module. The communication module can select three types of GPRS, WIFI and NB-IOT to realize cloud platform access.
The communication gateway unit is installed inside the metering base meter in a butt joint mode through the female electronic connector of the pin header row, and the communication gateway unit is communicated with the fee control metering base meter through the RS485 interface, so that a complete fee control metering terminal based on the cloud is formed, meanwhile, the terminal keeps the external 485 communication interface backup, and 485 communication of external equipment can be achieved. An RS485 connection circuit between the communication gateway unit and the fee control metering base table is shown in fig. 7.
The above embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (9)
1. The utility model provides an intelligence is taken and is controlled measurement terminal based on high in the clouds, a serial communication port, including taking accuse measurement base table, communication gateway unit, high in the clouds server and host computer, take accuse measurement base table to be responsible for gathering, calculating and save electric energy data, and with communication gateway unit carries out mutual data, communication gateway unit realizes reading of data collection through RS485 interface and expense accuse measurement base table, communication gateway unit passes through MQTT and private agreement and passes to electric energy data on to high in the clouds server and the instruction that sends the high in the clouds server gives expense accuse measurement base table, high in the clouds server with the host computer is connected, and electric energy data propelling movement shows to the host computer.
2. The cloud-based intelligent fee-control metering terminal of claim 1, wherein the fee-control metering base table comprises a voltage and current sampling circuit, an SOC master control metering circuit, an EEPROM (electrically erasable programmable read-Only memory), an RS485 interface, a switching power supply circuit and a load relay drive; voltage and current sampling circuit with SOC master control measurement circuit input is connected, gathers the transmission of power consumption real-time parameter extremely SOC master control measurement circuit, SOC master control measurement circuit respectively with EEPROM storage, RS485 interface, load relay drive and switching power supply circuit connect, switching power supply circuit provides electric power for spending accuse measurement base table, power consumption real-time parameter save in the EEPROM storage, SOC master control measurement circuit pass through RS485 communication interface with the mutual information of high in the clouds server realizes data transmission and spends accuse function.
3. The cloud-based intelligent fee-control metering terminal of claim 2, wherein the SOC master control metering circuit employs a metering SOC chip G80F924, and the metering SOC chip G80F924 is connected to the EEPROM memory chip through an I2C port.
4. The cloud-based smart cost-control metering terminal of claim 3, wherein the voltage-current sampling circuit comprises a voltage sampling circuit and a current sampling circuit, the output end of the voltage sampling circuit is connected with the VP and VN pins of the SOC chip G80F924, and the current sampling circuit is connected with the I2P and I2N pins of the SOC chip G80F 924.
5. The cloud-based intelligent fee-control metering terminal of claim 3, wherein the RS485 interface is connected with a UART port of an SOC chip G80F924 through an optically coupled HM3085 chip.
6. The cloud-based intelligent fee-control metering terminal of claim 2, wherein the switching power supply circuit adopts a chip PN8130H as a core, and the switching power supply circuit respectively outputs isolated 5VDC, non-isolated 3.3VDC and 12V voltage, wherein the 5V DC voltage meets the power supply requirement of the communication gateway unit, the 3.3V is used for the SOC master control metering circuit, and the 12V is used for the load relay drive power supply.
7. The cloud-based intelligent fee-controlled metering terminal of claim 1, wherein the communication gateway unit comprises a main control MCU, an onboard embedded communication module and a data storage module, the onboard embedded communication module and the data storage module are both connected with the main control MCU, the main control MCU and the onboard embedded communication module realize communication through a TTL-UART interface, the main control MCU controls the onboard embedded wireless communication module through an AT instruction, and remote data interaction with a cloud server is realized through the onboard embedded communication module.
8. The cloud-based intelligent cost-control metering terminal of claim 7, wherein the onboard embedded communication module can be of GPRS, WIFI or NB-IOT type.
9. The cloud-based intelligent fee-control metering terminal of any one of claims 1 to 8, wherein the communication gateway unit and the fee-control metering base table are installed in the fee-control metering base table in a butt joint mode through a pin bank female electronic connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121941014.5U CN215679526U (en) | 2021-08-18 | 2021-08-18 | Intelligent fee control metering terminal based on cloud |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121941014.5U CN215679526U (en) | 2021-08-18 | 2021-08-18 | Intelligent fee control metering terminal based on cloud |
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| Publication Number | Publication Date |
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| CN215679526U true CN215679526U (en) | 2022-01-28 |
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| CN202121941014.5U Active CN215679526U (en) | 2021-08-18 | 2021-08-18 | Intelligent fee control metering terminal based on cloud |
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- 2021-08-18 CN CN202121941014.5U patent/CN215679526U/en active Active
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