CN113867224A - Intelligent household distribution box and management system - Google Patents

Intelligent household distribution box and management system Download PDF

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Publication number
CN113867224A
CN113867224A CN202111205464.2A CN202111205464A CN113867224A CN 113867224 A CN113867224 A CN 113867224A CN 202111205464 A CN202111205464 A CN 202111205464A CN 113867224 A CN113867224 A CN 113867224A
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China
Prior art keywords
module
equipment
distribution box
paths
management system
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Pending
Application number
CN202111205464.2A
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Chinese (zh)
Inventor
陈锦洪
李彬蔚
胡国平
李培
关可飞
戴锦明
郭洋洋
赵爽
张欣
罗益荣
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Guangdong Power Grid Co Ltd
Jiangmen Power Supply Bureau of Guangdong Power Grid Co Ltd
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Guangdong Power Grid Co Ltd
Jiangmen Power Supply Bureau of Guangdong Power Grid Co Ltd
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Application filed by Guangdong Power Grid Co Ltd, Jiangmen Power Supply Bureau of Guangdong Power Grid Co Ltd filed Critical Guangdong Power Grid Co Ltd
Priority to CN202111205464.2A priority Critical patent/CN113867224A/en
Publication of CN113867224A publication Critical patent/CN113867224A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/04Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0428Safety, monitoring
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/20Pc systems
    • G05B2219/24Pc safety
    • G05B2219/24215Scada supervisory control and data acquisition

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The invention provides an intelligent household distribution box and a management system, and belongs to the technical field of distribution internet of things. The power distribution box comprises a control module, an interface module and a communication module, and a power line carrier communication module is additionally arranged in the communication module, so that data can be transmitted through the existing power line, the cost is effectively saved, the space is saved, and the reliability of communication is improved by combining wired communication with wireless communication. The management system runs based on an ARM core board, collection of electric equipment information and management and control of electric equipment can be achieved by arranging the state display module, the operation maintenance module and the equipment management module, an ARM framework is adopted, compared with a complex instruction set of x86, the simplified instruction set of the management system has the advantages of being uniform in format, few in type, few in addressing mode and the like, and meanwhile, corresponding hardware lines of the management system can be optimized to improve execution efficiency.

Description

Intelligent household distribution box and management system
Technical Field
The invention belongs to the technical field of distribution internet of things, and particularly relates to an intelligent household distribution box and a management system.
Background
The distribution network is directly connected with the user, the influence on the customer is most direct, and the service experience of the customer is also most strong. On the other hand, the distribution network has lower voltage grade, short construction period and small influence range of single equipment, and is more suitable for new technology and new equipment pilot and rapid popularization. Therefore, the power distribution network is an important component which is very critical and can take effect quickly in the construction of the power internet of things. The intelligent home Internet of things edge agent is important equipment for realizing deep fusion of the power distribution network and the Internet of things.
Because the traditional intelligent home Internet of things edge agent adopts an x86 architecture, the complex instruction set of the traditional intelligent home Internet of things edge agent makes the hardware circuit design of equipment more complex and the execution efficiency of the equipment is not high. And traditional intelligent house edge agent lacks the ability management and control function with, and the integrated level is high inadequately, fails to support power line carrier communication mode, can not effectively utilize the power transmission line of distribution network.
Disclosure of Invention
In view of this, the invention aims to solve the problems that the traditional smart home edge agent lacks an energy consumption management and control function, is not high enough in integration level, fails to support a power line carrier communication mode, and cannot effectively utilize a power transmission line of a power distribution network.
In order to solve the technical problems, the invention provides the following technical scheme:
in a first aspect, the present invention provides an intelligent home distribution box, including:
the device comprises a control module, an interface module and a communication module;
the control module adopts an ARM architecture chip and is used for collecting information of the electric equipment and controlling the electric equipment;
the interface module is used for providing power access, data transmission and an interface for connecting external equipment;
the communication module comprises a power line carrier communication module and a wireless communication module and is used for data transmission.
Further, the interface module specifically includes:
the device comprises a power input interface, 2 paths of DI input interfaces, 2 paths of DO output interfaces, 2 paths of analog signal input monitoring interfaces, 1 path of RS485 data communication serial ports, 1 path of RS232 equipment debugging serial ports, 2 paths of power line communication interfaces, 2 paths of Ethernet ports, 2 paths of miniUSB debugging interfaces, 1 path of equipment debugging serial ports, 4 paths of USB interfaces, 1 path of HDMI video output interfaces, 1 path of DP video output interfaces and 1 path of power amplifier audio output interfaces.
Further, the power line carrier communication module supports HPLC and HomePlug protocols.
Further, the wireless communication module specifically includes: 4G/5G module, WIFI module, bluetooth module and zigBee module.
Further, the control module specifically adopts a RK3399 type CPU based on an ARM framework.
In a second aspect, the present invention provides an intelligent home distribution box management system, which operates based on an ARM core board, and includes:
the system comprises a state display module, an equipment management module and an operation maintenance module;
the state display module is used for acquiring the parameters of voltage, temperature and current of the indoor electric appliance in real time through the ARM core board, and is also used for acquiring and displaying remote control switch records, distribution line remote signaling SOE related records and fault abnormal records from the power distribution terminal;
the equipment management module is used for monitoring the running state of the equipment in the distribution box in real time and sending an alarm signal to a background management center when the equipment is found to be abnormal;
the operation maintenance module is used for providing reset setting when being connected with the ARM core board and sending a remote control instruction to the background management center so as to realize operation and maintenance of remote control operation.
In summary, the invention provides an intelligent home distribution box and a management system, wherein the distribution box comprises a control module, an interface module and a communication module, and a power line carrier communication module is added in the communication module, so that data can be transmitted through the existing power line, the cost is effectively saved, the space is saved, and the reliability of communication is improved by combining wired communication with wireless communication. The management system runs based on an ARM core board, collection of electric equipment information and management and control of electric equipment can be achieved by arranging the state display module, the operation maintenance module and the equipment management module, an ARM framework is adopted, compared with a complex instruction set of x86, the simplified instruction set of the management system has the advantages of being uniform in format, few in type, few in addressing mode and the like, and meanwhile, corresponding hardware lines of the management system can be optimized to improve execution efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art 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 for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an intelligent home distribution box according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a principle of an intelligent home distribution box according to an embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
The distribution network is directly connected with the user, the influence on the customer is most direct, and the service experience of the customer is also most strong. On the other hand, the distribution network has lower voltage grade, short construction period and small influence range of single equipment, and is more suitable for new technology and new equipment pilot and rapid popularization. Therefore, the power distribution network is an important component which is very critical and can take effect quickly in the construction of the power internet of things. The intelligent home Internet of things edge agent is important equipment for realizing deep fusion of the power distribution network and the Internet of things.
Because the traditional intelligent home Internet of things edge agent adopts an x86 architecture, the complex instruction set of the traditional intelligent home Internet of things edge agent makes the hardware circuit design of equipment more complex and the execution efficiency of the equipment is not high. And traditional intelligent house edge agent lacks the ability management and control function with, and the integrated level is high inadequately, fails to support power line carrier communication mode, can not effectively utilize the power transmission line of distribution network.
Based on the intelligent home distribution box and the management system, the invention provides the intelligent home distribution box and the management system.
The following is a detailed description of an embodiment of an intelligent home distribution box of the present invention.
Referring to fig. 1 and 2, the present embodiment provides an intelligent home distribution box, including: the device comprises a control module, an interface module and a communication module.
In this embodiment, the control module adopts an ARM architecture chip for performing information acquisition and management and control of the electric equipment.
It should be noted that, the control module of the intelligent home distribution box of this embodiment adopts an ARM architecture chip, and a Reduced Instruction Set (RISC) adopted by the ARM architecture has advantages of a uniform format, a small number of types, a small number of addressing modes, and the like, compared with a complex instruction set CISI of an x86 architecture, and meanwhile, a corresponding hardware line of the intelligent home distribution box can be optimized to improve execution efficiency.
Furthermore, the control module can specifically adopt a RK3399 type CPU. The CPU is a double-Cortex-A72 + four-Cortex-A53 large-small core CPU structure, the memory is double-channel DDR3-1866/DDR3L-1866/LPDDR3-1866/LPDDR4, and eMMC 5.1 and SDIO3.0 are supported. Multiple definition video decoding is also supported; and displaying at various resolutions. The system can be automatically recovered when the equipment is halted under the extreme conditions of high-voltage interference, high magnetic field interference and the like; the double-ISP pixel processing capacity is up to 13MPix/s, double-channel camera data simultaneous input is supported, and double-USB 3.0 Type-C interfaces, PCIe 2.1(4 full-duplex lanes), low-power consumption MCU and 8-channel digital microphone array input are supported.
In this embodiment, the interface module is used to provide power access, data transmission, and an interface for connecting an external device.
It should be noted that the interface modules are divided into two types, one type is a northbound interface, and the interface module mainly faces to a user side and is used for connecting and communicating with the electric equipment, so that real-time monitoring and load analysis of the electric equipment are realized. The other type is a southward interface which comprises interfaces such as PLC, WIFI, Bluetooth, ZigBee, 4G/5G and the like and is mainly oriented to a background management platform or other terminals for analyzing information.
The specific interface module settings are as follows:
the power 220V/AC input, 2 way DI input and 2 way DO output, 2 way analog signal input monitoring, 1 way RS485 data communication serial ports and 1 way RS232 equipment debugging serial ports, 2 way power line communication interface, 2 way Ethernet port support equipment inserts different LAN simultaneously, 2 way 4G/5G module miniUSB debugging interface and 1 way equipment debugging serial ports, can monitor equipment operating condition in real time, 4 way USB interface, two way TF card read-write slot, 1 way HDMI video output interface and 1 way DP video output interface and 1 way power amplifier audio output interface.
In this embodiment, the communication module includes a power line carrier communication module and a wireless communication module, and is used for data transmission.
It should be noted that the power line carrier communication module in the communication module supports HPLC and HomePlug protocols.
The wireless communication module in the communication module can be set to be a 4G/5G module, a WIFI module, a Bluetooth module, a ZigBee module and the like. The communication module adopts a power line carrier communication module and various wireless communication modules based on power transmission line transmission, so that the power line of the existing power distribution network is fully utilized, the cost and the space are saved, various communication modes can be supplemented with each other, communication hot backup is realized, and the communication is not easy to interrupt.
The intelligent household distribution box provided by the embodiment comprises a control module, an interface module and a communication module, wherein a power line carrier communication module is additionally arranged in the communication module, so that data can be transmitted through the existing power line, the cost is effectively saved, the space is saved, and the reliability of communication is improved by combining wired communication with wireless communication.
The foregoing is a detailed description of an embodiment of an intelligent home distribution box according to the present invention, and the following is a detailed description of an embodiment of an intelligent home distribution box management system according to the present invention.
The embodiment provides an intelligent home distribution box management system, and the system runs based on an ARM core board and comprises a state display module, an equipment management module and a running maintenance module.
In this embodiment, the state display module is used for acquiring parameters of voltage, temperature and current of an indoor electric appliance in real time through the ARM core board, and is also used for acquiring and displaying remote control switch records, distribution line remote signaling SOE related records and fault abnormal records from the power distribution terminal;
in this embodiment, the device management module is configured to monitor the running state of the devices in the configuration box in real time, and send an alarm signal to the background management center when the devices are found to be abnormal;
in this embodiment, the operation and maintenance module is configured to provide reset settings when connected to the ARM core board, and send a remote control instruction to the background management center, so as to implement operation and maintenance of remote control operations.
It should be noted that, in the design of the intelligent home distribution box management system, the system is developed based on ARM embedded software, and the software adopts a mixed compilation method of assembly language and C language, and mainly realizes a plurality of tasks such as data collection, calculation and I/O. Each module of the system mainly plays roles of centralized management, remote monitoring of system equipment, statistics and analysis of faults, data acquisition, detailed recording of operation logs, regular maintenance of the equipment and the like.
Specifically, in the state display module, parameters of voltage, temperature and current of an indoor electric appliance are collected in real time through the ARM core board, and when the system is connected with the ARM core board, the remote control switch record, the distribution line remote signaling SOE related record and the fault abnormity record can be obtained and displayed from the power distribution terminal. In the equipment management module, the running state of equipment in the distribution box can be monitored in real time through the centralized management platform, the control is realized by loading the equipment to the ARM core board through the system, if the equipment is abnormal, the ARM core board can trigger an alarm signal and send the alarm signal to the background management center. In the operation maintenance module, when the system is connected with the ARM core board, reset setting can be implemented, and a remote control instruction can be sent to a background management center, so that operation and maintenance of remote control operation are realized.
The embodiment provides an intelligent home distribution box management system, this system is based on ARM nuclear core plate operation, can realize the collection to consumer information and the management and control to consumer through setting up state display module, operation maintenance module and equipment management module, and adopt the ARM framework, its retrench instruction set compares in x 86's complicated instruction set, have the form unified, the kind is few, addressing mode advantage such as few, its corresponding hardware circuit can accomplish the optimization simultaneously, in order to improve the execution efficiency.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (6)

1. The utility model provides an intelligence house block terminal which characterized in that includes:
the device comprises a control module, an interface module and a communication module;
the control module adopts an ARM architecture chip and is used for collecting information of electric equipment and controlling the electric equipment;
the interface module is used for providing power access, data transmission and an interface for connecting external equipment;
the communication module comprises a power line carrier communication module and a wireless communication module and is used for data transmission.
2. An intelligent home distribution box according to claim 1, wherein the interface module specifically comprises:
the device comprises a power input interface, 2 paths of DI input interfaces, 2 paths of DO output interfaces, 2 paths of analog signal input monitoring interfaces, 1 path of RS485 data communication serial ports, 1 path of RS232 equipment debugging serial ports, 2 paths of power line communication interfaces, 2 paths of Ethernet ports, 2 paths of miniUSB debugging interfaces, 1 path of equipment debugging serial ports, 4 paths of USB interfaces, 1 path of HDMI video output interfaces, 1 path of DP video output interfaces and 1 path of power amplifier audio output interfaces.
3. The smart home distribution box of claim 1, wherein the power line carrier communication module supports HPLC and HomePlug protocols.
4. An intelligent household distribution box according to claim 1, wherein the wireless communication module specifically comprises: 4G/5G module, WIFI module, bluetooth module and zigBee module.
5. The intelligent home distribution box according to claim 1, wherein the control module specifically employs a RK3399 CPU based on ARM architecture.
6. The utility model provides an intelligence house block terminal management system which characterized in that, based on ARM nuclear core plate operation, includes:
the system comprises a state display module, an equipment management module and an operation maintenance module;
the state display module is used for acquiring parameters of voltage, temperature and current of an indoor electric appliance in real time through the ARM core board, and is also used for acquiring and displaying remote control switch records, distribution line remote signaling SOE related records and fault abnormity records from a power distribution terminal;
the equipment management module is used for monitoring the running state of the equipment in the distribution box in real time and sending an alarm signal to a background management center when the equipment is found to be abnormal;
the operation maintenance module is used for providing reset setting when being connected with the ARM core board and sending a remote control instruction to the background management center so as to realize operation and maintenance of remote control operation.
CN202111205464.2A 2021-10-15 2021-10-15 Intelligent household distribution box and management system Pending CN113867224A (en)

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Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060271695A1 (en) * 2005-05-16 2006-11-30 Electronics Line 3000 Ltd. System for remote secured operation, monitoring and control of security and other types of events
CN101917806A (en) * 2010-08-11 2010-12-15 天津工业大学 ARM processor-based street lamp centralized controller
CN204595459U (en) * 2015-03-06 2015-08-26 金健 A kind of intelligent home appliance remote control system based on power carrier
CN204794371U (en) * 2015-07-13 2015-11-18 上海翔骋电气设备有限公司 Distribution network intelligence feeder terminal based on embedded many ARM
CN105162250A (en) * 2015-08-27 2015-12-16 许继集团有限公司 Energy efficiency service cloud terminal and energy efficiency service management system for power consumer
CN105186682A (en) * 2014-06-10 2015-12-23 莱芜科泰电力科技有限公司 Novel intelligent distribution box
CN205544617U (en) * 2016-04-13 2016-08-31 上海华立软件系统有限公司 Distribution transformer's control, protection and management device
CN206388045U (en) * 2017-01-23 2017-08-08 济南赛英立德电子科技有限公司 intelligent controller based on embedded system
CN107367951A (en) * 2017-08-07 2017-11-21 广东电网有限责任公司电力调度控制中心 A kind of intelligent household communication system based on power line carrier
CN208156503U (en) * 2018-06-06 2018-11-27 重庆凯迎智能家居有限公司 Smart home server based on power carrier
CN109217477A (en) * 2018-11-05 2019-01-15 广东电网有限责任公司 A kind of distribution terminal control device
CN208489856U (en) * 2018-08-03 2019-02-12 国网河南省电力公司南阳供电公司 A kind of private electric power wireless communication apparatus
CN109542054A (en) * 2018-10-09 2019-03-29 北京艾家科技有限公司 Smart home system based on distribution box type
US20210218274A1 (en) * 2018-09-30 2021-07-15 Electric Power Science & Research Institute Of State Grid Tianjin Electric Power Distribution transformer terminal and method for monitoring a state of a distribution transformer court device

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060271695A1 (en) * 2005-05-16 2006-11-30 Electronics Line 3000 Ltd. System for remote secured operation, monitoring and control of security and other types of events
CN101917806A (en) * 2010-08-11 2010-12-15 天津工业大学 ARM processor-based street lamp centralized controller
CN105186682A (en) * 2014-06-10 2015-12-23 莱芜科泰电力科技有限公司 Novel intelligent distribution box
CN204595459U (en) * 2015-03-06 2015-08-26 金健 A kind of intelligent home appliance remote control system based on power carrier
CN204794371U (en) * 2015-07-13 2015-11-18 上海翔骋电气设备有限公司 Distribution network intelligence feeder terminal based on embedded many ARM
CN105162250A (en) * 2015-08-27 2015-12-16 许继集团有限公司 Energy efficiency service cloud terminal and energy efficiency service management system for power consumer
CN205544617U (en) * 2016-04-13 2016-08-31 上海华立软件系统有限公司 Distribution transformer's control, protection and management device
CN206388045U (en) * 2017-01-23 2017-08-08 济南赛英立德电子科技有限公司 intelligent controller based on embedded system
CN107367951A (en) * 2017-08-07 2017-11-21 广东电网有限责任公司电力调度控制中心 A kind of intelligent household communication system based on power line carrier
CN208156503U (en) * 2018-06-06 2018-11-27 重庆凯迎智能家居有限公司 Smart home server based on power carrier
CN208489856U (en) * 2018-08-03 2019-02-12 国网河南省电力公司南阳供电公司 A kind of private electric power wireless communication apparatus
US20210218274A1 (en) * 2018-09-30 2021-07-15 Electric Power Science & Research Institute Of State Grid Tianjin Electric Power Distribution transformer terminal and method for monitoring a state of a distribution transformer court device
CN109542054A (en) * 2018-10-09 2019-03-29 北京艾家科技有限公司 Smart home system based on distribution box type
CN109217477A (en) * 2018-11-05 2019-01-15 广东电网有限责任公司 A kind of distribution terminal control device

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