CN112462159B - Smart electric meter system and method capable of improving electricity utilization efficiency - Google Patents

Smart electric meter system and method capable of improving electricity utilization efficiency Download PDF

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Publication number
CN112462159B
CN112462159B CN201910848790.1A CN201910848790A CN112462159B CN 112462159 B CN112462159 B CN 112462159B CN 201910848790 A CN201910848790 A CN 201910848790A CN 112462159 B CN112462159 B CN 112462159B
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circuit
module
quantity information
electric quantity
balance
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CN112462159A (en
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张旺国
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WUHAN SAN FRAN ELECTRONICS CORP
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WUHAN SAN FRAN ELECTRONICS CORP
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/06Investigating concentration of particle suspensions

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  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The invention discloses a smart electric meter system and a smart electric meter method capable of improving electricity utilization efficiency, and relates to the technical field of circuits. The system comprises: the cloud server is arranged at the far end and the intelligent ammeter is arranged at the user end; the smart meter includes a housing; the shell is provided with a microprocessor, a power supply module, a storage module, a display screen, an IC card reader, a wireless communication module, a gas sensor, an alarm module, an ammeter concentrator and an electric energy metering module for collecting electric quantity information; the microprocessor is respectively and electrically connected with the power supply module, the storage module, the display screen, the IC card reader, the wireless communication module, the gas sensor, the alarm module and the electric energy metering module; the wireless communication module is in wireless connection with the cloud server through a wireless network. The invention has moderate cost and stable performance, can obtain better economic benefit and has good popularization prospect.

Description

Smart electric meter system and method capable of improving electricity utilization efficiency
Technical Field
The invention relates to the technical field of circuits, in particular to a smart meter system and a smart meter method capable of improving electricity utilization efficiency.
Background
With the overall construction of the reinforced intelligent power grid in China, the intelligent power grid can meet the continuously-ascending power demand as an important basic device, namely, the intelligent power meter is larger and larger in demand and is more and more complete in function. The traditional ammeter is manually transcribed, transcription and charging work of the ammeter are also problems of urban life, the workload of manual meter reading is huge, the working efficiency is low, inconvenience is brought to workers, and the phenomenon of missing transcription and mistaken transcription can occur.
Meanwhile, due to poor management of the ammeter, the electricity utilization efficiency is low, and the waste of electric energy is caused.
Disclosure of Invention
In order to solve the problems, the invention aims to provide the intelligent ammeter system and the intelligent ammeter method capable of improving the electricity utilization efficiency, and the intelligent ammeter system and the intelligent ammeter method are moderate in cost and stable in performance, can obtain good economic benefits and have good popularization prospects.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a smart meter system capable of improving electrical efficiency, the system comprising: the cloud server is arranged at the far end and the intelligent ammeter is arranged at the user end; the smart meter includes a housing; the shell is provided with a microprocessor, a power supply module, a storage module, a display screen, an IC card reader, a wireless communication module, a gas sensor, an alarm module, an ammeter concentrator and an electric energy metering module for collecting electric quantity information; the microprocessor is respectively and electrically connected with the power supply module, the storage module, the display screen, the IC card reader, the wireless communication module, the gas sensor, the alarm module and the electric energy metering module; the wireless communication module is in wireless connection with the cloud server through a wireless network.
Further, the electric energy metering module is used for collecting the electricity information of a user; the microprocessor is used for receiving the electric quantity information acquired by the electric energy metering module, storing the electric quantity information in the storage module, displaying the electric quantity information through the display screen, sending the electric quantity information to the cloud server for storage through the wireless communication module at regular intervals, and the power supply company can acquire electric meter data through accessing the cloud server arranged at the far end.
Further, the ammeter concentrator controls and reads the data of the meter head through the CAN bus, and the data are stored in a flash memory of the concentrator; the concentrator executes the control command transmitted from the host computer.
Further, the electricity meter concentrator includes: ARM processing chip, flash memory, clock chip, CAN bus interface circuit, RS232 interface, RS485 and power supply; the CAN bus interface circuit comprises: 3.3V power supply;
a smart meter management method capable of improving electricity efficiency, the method performing the steps of: the electric energy metering module is used for collecting the electricity consumption information of the user. The microprocessor is used for receiving the electric quantity information acquired by the electric energy metering module, storing the electric quantity information in the storage module, displaying the electric quantity information through the display screen, and sending the electric quantity information to the cloud server for storage through the wireless communication module at regular intervals, so that a power supply company can acquire electric meter data by accessing the cloud server.
Further, the method further comprises: monitoring the state of the circuit in real time; the estimation and monitoring of the internal state of the circuit are realized by detecting the external characteristic parameters of the circuit and adopting an algorithm; after the state of the circuit is correctly acquired, performing thermal management, battery balance management, charge and discharge management and fault alarm; and establishing a communication bus, and realizing data exchange with the display system, the system controller and the charger.
Further, the process of detecting the state of the circuit comprises two parts; the first part is a front-end analog measurement protection circuit and comprises a circuit voltage conversion and measurement circuit, a circuit balance driving circuit, a switch driving circuit, a current measurement and communication circuit; the second part is a back-end data processing module, which calculates according to the front end of voltage, current, temperature and the like, and transmits necessary information back to the system through a communication interface to make control.
Further, the circuit balance driving circuit includes: a balance converter, a filter, and a matching circuit; the balanced converter filter is connected through a balanced transmission line, the filter is connected with the matching line through the balanced transmission line, the balanced converter comprises a second line, a first line, a third line, a first port, a second port and a third port, the positive electrode of the signal is positioned at the top of the second port and the bottom of the third port, the balanced signal is fed to the converter at the top end and the bottom end of the second port and the third port respectively, and the signal is combined in the first port.
Compared with the prior art, the invention has the beneficial effects that: the electric energy metering module is used for collecting the electricity consumption information of the user. The microprocessor is used for receiving the electric quantity information acquired by the electric energy metering module, storing the electric quantity information in the storage module, displaying the electric quantity information through the display screen, and sending the electric quantity information to the cloud server for storage through the wireless communication module at regular intervals, and the power supply company can obtain the electric meter data through accessing the cloud server without manual meter reading, so that the working efficiency is improved, and the conditions of missing meter reading and wrong meter reading are avoided. The user can pay the electric charge by swiping the card at the IC card reader. Meanwhile, the invention improves the safety of the system by a complete power management means.
Drawings
The invention is described in further detail below with reference to the attached drawings and detailed description:
fig. 1 is a schematic system structure diagram of a smart meter system capable of improving electricity efficiency according to an embodiment of the present invention.
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.
Please refer to fig. 1. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the invention, are not intended to be critical to the essential characteristics of the invention, but are intended to fall within the spirit and scope of the invention. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.
Example 1
A smart meter system capable of improving electrical efficiency, the system comprising: the cloud server is arranged at the far end and the intelligent ammeter is arranged at the user end; the smart meter includes a housing; the shell is provided with a microprocessor, a power supply module, a storage module, a display screen, an IC card reader, a wireless communication module, a gas sensor, an alarm module, an ammeter concentrator and an electric energy metering module for collecting electric quantity information; the microprocessor is respectively and electrically connected with the power supply module, the storage module, the display screen, the IC card reader, the wireless communication module, the gas sensor, the alarm module and the electric energy metering module; the wireless communication module is in wireless connection with the cloud server through a wireless network.
Specifically, the gas sensor can detect flammable and explosive gas, when the concentration of the flammable and explosive gas is detected to exceed the standard, the alarm module gives an alarm, meanwhile, the intelligent ammeter sends alarm information to the cloud server, and the cloud server notifies a power supply company or related departments to power off the area. The shell is also provided with a key which is electrically connected with the microprocessor. The shell is also provided with a GPS module which is electrically connected with the microprocessor. The intelligent ammeter locates the position of the intelligent ammeter through the GPS module and reports the position to the cloud server, so that a power supply company can conveniently master the position of the intelligent ammeter.
Example 2
On the basis of the previous embodiment, the electric energy metering module is used for collecting the electricity consumption information of the user; the microprocessor is used for receiving the electric quantity information acquired by the electric energy metering module, storing the electric quantity information in the storage module, displaying the electric quantity information through the display screen, sending the electric quantity information to the cloud server for storage through the wireless communication module at regular intervals, and the power supply company can acquire electric meter data through accessing the cloud server arranged at the far end.
Example 3
On the basis of the previous embodiment, the ammeter concentrator controls and reads the data of the meter head through the CAN bus, and the data are stored in the flash memory of the concentrator; the concentrator executes the control command transmitted from the host computer.
Example 4
On the basis of the above embodiment, the electricity meter concentrator includes: ARM processing chip, flash memory, clock chip, CAN bus interface circuit, RS232 interface, RS485 and power supply; the CAN bus interface circuit comprises: 3.3V power supply.
Specifically, a general smart meter system is composed of four parts: the meter head, the concentrator, the communicator and the upper computer system. Specifically, as shown in fig. 1, the working principle is that an integrated carrier meter or an electric power metering sensing system module arranged at the tail of an ammeter is networked through a CAN bus, a concentrator receives data according to a set time period and stores the data into an internal flash, and when an upper computer sends a data reading signal, the upper computer reads the data through RS232 or RS485, and the read data is transmitted to an electricity management center through a network.
Example 5
A smart meter management method capable of improving electricity efficiency, the method performing the steps of: the electric energy metering module is used for collecting the electricity consumption information of the user. The microprocessor is used for receiving the electric quantity information acquired by the electric energy metering module, storing the electric quantity information in the storage module, displaying the electric quantity information through the display screen, and sending the electric quantity information to the cloud server for storage through the wireless communication module at regular intervals, so that a power supply company can acquire electric meter data by accessing the cloud server.
Example 6
On the basis of the above embodiment, the method further includes: monitoring the state of the circuit in real time; the estimation and monitoring of the internal state of the circuit are realized by detecting the external characteristic parameters of the circuit and adopting an algorithm; after the state of the circuit is correctly acquired, performing thermal management, battery balance management, charge and discharge management and fault alarm; and establishing a communication bus, and realizing data exchange with the display system, the system controller and the charger.
Example 7
On the basis of the above embodiment, the process of detecting the state of the circuit includes two parts; the first part is a front-end analog measurement protection circuit and comprises a circuit voltage conversion and measurement circuit, a circuit balance driving circuit, a switch driving circuit, a current measurement and communication circuit; the second part is a back-end data processing module, which calculates according to the front end of voltage, current, temperature and the like, and transmits necessary information back to the system through a communication interface to make control.
Example 8
On the basis of the above embodiment, the circuit balance driving circuit includes: the circuit balance driving circuit includes: a balance converter, a filter, and a matching circuit; the balanced converter filter is connected through a balanced transmission line, the filter is connected with the matching line through the balanced transmission line, the balanced converter comprises a second line, a first line, a third line, a first port, a second port and a third port, the positive electrode of the signal is positioned at the top of the second port and the bottom of the third port, the balanced signal is fed to the converter at the top end and the bottom end of the second port and the third port respectively, and the signal is combined in the first port.
Specifically, the smart meter may also cover the following functions:
monomer protection
The operating condition that protects the battery from leaving beyond the limit is the basis of all BMS design procedures. In practice, the BMS must provide complete and almost any possibility of cell protection. This is especially true for high voltage and high power automotive batteries, which must operate in harsh environments and are also subject to messy use by the user.
Cost control
This is an essential feature of the BMS. The damage caused by improper charging of the battery is more than the damage caused by any other reason
Demand management
Not directly related to the operation of the battery itself, but rather refers to the application program that uses the battery. The aim is to prolong the charging time of the battery by designing a power saving technology in an application circuit, thereby reducing the current consumption of the battery to the maximum extent.
Measurement of SOC
Many applications require knowledge of the state of charge (SOC) of a battery or the state of individual batteries in a battery chain. This may be simply to provide an indication of battery capacity to the user or it may be required in the control circuitry to ensure optimal control of the charging process.
Determination of SOH
Health (SOH) is a measure of the ability of a battery to provide its specified output. This is critical to assessing the readiness of the emergency power equipment and is an indicator of whether maintenance activity is required.
Battery equalization
In a battery pack in which a plurality of unit cells are connected, the battery pack is often enlarged with each charge/discharge cycle due to a difference between production processes or operating conditions. Weaker batteries can become weaker during charging due to over-discharge, until the battery eventually fails. Battery balancing is a method of making the voltage of each unit cell uniform by balancing the voltages of the unit cells, thereby delaying the service life of the battery.
History record (Log function)
Monitoring and storing the history of the battery is another possible function of the BMS. This is necessary to estimate the health of the battery, but also to determine if it is subject to abuse. Parameters such as the number of cycles, maximum and minimum voltages, temperature and maximum charge-discharge current can be recorded for subsequent evaluation. This is also an important record of whether claims are required during the warranty period.
Authentication and identification
The BMS also allows recording information of the battery, such as the model name of the manufacturer and the type of the battery, which facilitates automatic testing and lot or serial number and manufacturing date in order to enable traceability when the battery fails.
Communication system
Most BMS systems contain some form of communication between the battery and the charger or test device. Some are linked to other systems and batteries to monitor their condition or history. The communication interface also needs to allow the user to access battery control parameters or diagnostics and tests that modify the BMS.
It will be clear to those skilled in the art that, for convenience and brevity of description, the specific working process of the system described above and the related description may refer to the corresponding process in the foregoing method embodiment, which is not repeated here.
It should be noted that, in the system provided in the foregoing embodiment, only the division of the foregoing functional modules is illustrated, in practical application, the foregoing functional allocation may be performed by different functional modules, that is, the modules or steps in the embodiment of the present invention are further decomposed or combined, for example, the modules in the foregoing embodiment may be combined into one module, or may be further split into multiple sub-modules, so as to complete all or part of the functions described above. The names of the modules and steps related to the embodiments of the present invention are merely for distinguishing the respective modules or steps, and are not to be construed as unduly limiting the present invention.
It will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the storage device and the processing device described above and the related description may refer to the corresponding process in the foregoing method embodiment, which is not repeated herein.
Those of skill in the art will appreciate that the various illustrative modules, method steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the program(s) corresponding to the software modules, method steps, may be embodied in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. To clearly illustrate this interchangeability of electronic hardware and software, various illustrative components and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as electronic hardware or software depends upon the particular application and design constraints imposed on the solution. Those skilled in the art may implement the described functionality using different approaches for each particular application, but such implementation is not intended to be limiting.
The terms "first," "second," and the like, are used for distinguishing between similar objects and not for describing a particular sequential or chronological order.
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/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/apparatus.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will fall within the scope of the present invention.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (3)

1. A smart meter system capable of improving electrical efficiency, the system comprising: the cloud server is arranged at the far end and the intelligent ammeter is arranged at the user end; the smart meter includes a housing; the shell is provided with a microprocessor, a power supply module, a storage module, a display screen, an IC card reader, a wireless communication module, a gas sensor, an alarm module, an ammeter concentrator and an electric energy metering module for collecting electric quantity information; the microprocessor is respectively and electrically connected with the power supply module, the storage module, the display screen, the IC card reader, the wireless communication module, the gas sensor, the alarm module and the electric energy metering module; the wireless communication module is in wireless connection with the cloud server through a wireless network;
the electric energy metering module is used for collecting the electricity consumption of a user; the microprocessor is used for receiving the electric quantity information acquired by the electric energy metering module, storing the electric quantity information in the storage module, displaying the electric quantity information through the display screen, sending the electric quantity information to the cloud server for storage through the wireless communication module at regular intervals, and the power supply company acquires the electric meter data through accessing the cloud server arranged at the far end;
the ammeter concentrator controls and reads the data of the meter head through the CAN bus, and the data are stored in the flash memory of the concentrator; the concentrator executes the control command sent from the upper computer;
the electricity meter concentrator includes: ARM processing chip, flash memory, clock chip, CAN bus interface circuit, RS232 interface, RS485 and power supply; the CAN bus interface circuit comprises: 3.3V power supply;
the ammeter concentrator is used for realizing estimation and monitoring of the internal state of the circuit by detecting the external characteristic parameters of the circuit and adopting an algorithm; after the state of the circuit is correctly acquired, performing thermal management, battery balance management, charge and discharge management and fault alarm; establishing a communication bus, and realizing data exchange with a display system, a system controller and a charger;
wherein the process of monitoring the state of the circuit comprises two parts; the first part is a front-end analog measurement protection circuit, which comprises a circuit voltage conversion and measurement circuit, a circuit balance driving circuit, a switch driving circuit, a current measurement and communication circuit; the second part is a back-end data processing module, which calculates according to the front end of voltage, current and temperature and transmits the information of voltage, current and temperature back to the system through a communication interface to make control.
2. A smart meter management method capable of improving electricity efficiency based on the system of claim 1, wherein the method performs the steps of: the electric energy metering module is used for collecting the electricity consumption information of a user, the microprocessor is used for receiving the electric quantity information collected by the electric energy metering module, storing the electric quantity information in the storage module, displaying the electric quantity information through the display screen, and periodically sending the electric quantity information to the cloud server for storage through the wireless communication module, and the power supply company obtains the electric meter data by accessing the cloud server;
the method further comprises the steps of: monitoring the state of the circuit in real time; the estimation and monitoring of the internal state of the circuit are realized by detecting the external characteristic parameters of the circuit and adopting an algorithm; after the state of the circuit is correctly acquired, performing thermal management, battery balance management, charge and discharge management and fault alarm; establishing a communication bus, and realizing data exchange with a display system, a system controller and a charger;
wherein the process of monitoring the state of the circuit comprises two parts; the first part is a front-end analog measurement protection circuit, which comprises a circuit voltage conversion and measurement circuit, a circuit balance driving circuit, a switch driving circuit, a current measurement and communication circuit; the second part is a back-end data processing module, which calculates according to the front end of voltage, current and temperature and transmits the information of voltage, current and temperature back to the system through a communication interface to make control.
3. The smart meter management method of claim 2, wherein the circuit balance driving circuit comprises: a balance converter, a filter, and a matching circuit; the balance converter is connected with the filter through a balance transmission line, the filter is connected with the matching line through the balance transmission line, the balance converter comprises a second line, a first line, a third line, a first port, a second port and a third port, the positive electrode of the signal is positioned at the top of the second port and the bottom of the third port, the balance signal is fed to the converter at the top end and the bottom end of the second port and the third port respectively, and the signal is combined in the first port.
CN201910848790.1A 2019-09-09 2019-09-09 Smart electric meter system and method capable of improving electricity utilization efficiency Active CN112462159B (en)

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CN112462159B true CN112462159B (en) 2023-11-24

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102420603A (en) * 2011-10-26 2012-04-18 哈尔滨工业大学 Negative feedback self-balancing drive circuit used for microsensor
CN104238466A (en) * 2013-06-08 2014-12-24 华北电力大学(保定) Smart power and energy using system platform based on Cloud of Things
CN107748285A (en) * 2017-10-20 2018-03-02 浙江科技学院 A kind of intelligent electric meter system based on Internet of Things
CN107945401A (en) * 2017-10-20 2018-04-20 浙江科技学院 A kind of intelligent electric meter system
CN208399570U (en) * 2018-08-03 2019-01-18 上海芯北电子科技有限公司 A kind of intelligent electric meter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102420603A (en) * 2011-10-26 2012-04-18 哈尔滨工业大学 Negative feedback self-balancing drive circuit used for microsensor
CN104238466A (en) * 2013-06-08 2014-12-24 华北电力大学(保定) Smart power and energy using system platform based on Cloud of Things
CN107748285A (en) * 2017-10-20 2018-03-02 浙江科技学院 A kind of intelligent electric meter system based on Internet of Things
CN107945401A (en) * 2017-10-20 2018-04-20 浙江科技学院 A kind of intelligent electric meter system
CN208399570U (en) * 2018-08-03 2019-01-18 上海芯北电子科技有限公司 A kind of intelligent electric meter

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Denomination of invention: An intelligent electricity meter system and method that can improve electricity efficiency

Granted publication date: 20231124

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