CN105182020A - Multi-path electric energy metering device and method capable of being expanded in modularization mode - Google Patents
Multi-path electric energy metering device and method capable of being expanded in modularization mode Download PDFInfo
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- CN105182020A CN105182020A CN201510622404.9A CN201510622404A CN105182020A CN 105182020 A CN105182020 A CN 105182020A CN 201510622404 A CN201510622404 A CN 201510622404A CN 105182020 A CN105182020 A CN 105182020A
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Abstract
The invention discloses a multi-channel electric energy metering device capable of being expanded in a modularized mode and a method thereof. In the metering process, the whole process comprises signal acquisition → analog-to-digital conversion → multiplication to obtain active power instantaneous quantity → average active power is obtained → integral to obtain active power quantity → storage, display and uploading. The invention supports modular expansion, reduces the investment cost of metering equipment, reduces the maintenance workload, saves the mounting space of the meter box, has simple metering process, saves unnecessary steps, and saves the metering time and the possibility of errors.
Description
Technical field
The present invention relates to a kind of can modularization expansion Multi-path electricity energy meter device and method.
Background technology
Intelligent electric meter is the intelligent terminal of intelligent grid, except possessing the function of measuring of traditional electric energy meter basic electricity amount, in order to adapt to the use of intelligent grid and new forms of energy, the intelligentized functions such as power information stores, two-way multiple rate is measured, user side controls, the bidirectional data communication of plurality of data transmission modes that it also has.In China, the propelling of building along with the strong intelligent grid of country, as the demand of the intelligent electric meter of user side also in continuous growth.Current, low pressure resident generally adopts the mounting means that Every household has an ammeter, and for the resident of urban cells, the electric supply meter with Stall is often installed concentratedly in corridor corridor, ammeter well or power distribution room.Tens of pieces of ammeters are configured with the functions such as collection, storage, calculating, display, communication, Card Reader, control respectively, and performance can not get sufficient utilization.Therefore, concentrate the occasion of dress table for low pressure resident, be necessary to design a kind of electric power meter gathering multichannel electric information, and configure according to the change flexible expansion of number of users, reach the balance of function and economy.
Summary of the invention
In order to overcome the deficiency of existing technology, the invention provides a kind of can modularization expansion Multi-path electricity energy meter device and method.
Technical solution of the present invention is as described below:
A kind of can modularization expansion Multi-path electricity energy metering device, it is characterized in that, comprise CPU (central processing unit), infrared unit, card reading unit, storage unit, battery unit, liquid crystal display, keyboard unit, voltage acquisition unit, multichannel electric current acquisition module and communication unit, described CPU (central processing unit) respectively with described infrared unit, described card reading unit, described storage unit, described battery unit, described liquid crystal display, described keyboard unit, described voltage acquisition unit, described multichannel electric current acquisition module and described communication unit connect, wherein,
Described CPU (central processing unit) is responsible for the task of calling whole system, manages all system peripherals,
Described infrared unit supports that external unit is by the associated user's power information in infra-red communications port reading device,
Described card reading unit supports that user reads in measuring apparatus that store with user-dependent power information by subscriber card,
Described storage unit is for storing the User Profile information obtained from metering automation system or Marketing Management Information System, each voltage, the user power utilization data of described current acquisition module acquires, the result of calculation of described CPU (central processing unit) and relevant historical data
Described battery unit provides standby power supply for whole device, and when occurring for having a power failure, holdout device normal continuous runs,
Described liquid crystal display is used for each setting option corresponding to display keyboard input, for showing the power information of user's inquiry,
Described keyboard comprises optimum configurations key and multifunctional direction key, described optimum configurations key be used for system input is set, described multifunctional direction key for arranging position, the display screen page turning of cursor,
Described communication unit is used for carrying out communication with main website, concentrator,
Described voltage acquisition unit is used for the line voltage distribution transient data of Real-time Collection measuring apparatus installed position,
Electric current instantaneous flow on described current acquisition module acquires subscriber's line, and be supplied to described CPU (central processing unit) for the electric energy metrical of user and electrical energy consumption analysis.
Further, described CPU (central processing unit), described infrared unit, described card reading unit, described storage unit, described battery unit, described liquid crystal display, described keyboard unit, described voltage acquisition unit and described communication unit are assembled into integrative-structure, and this integrative-structure is device main frame.
Further, described device main frame is arranged on the main line of subscriber's line inlet wire, and described current acquisition module is located on the branch line of subscriber's line inlet wire.
Further, described current acquisition module is connected by signal wire with described device main frame.
Further, described device main frame also comprises Power Management Unit, described Power Management Unit two ends connect described battery unit and described CPU (central processing unit) respectively, and the voltage transitions on the voltage that battery unit exports by described Power Management Unit or circuit becomes stable system power supply voltage.
Further, Hall current sensor and MCU chip is provided with in described current acquisition module, electric current instantaneous flow on the subscriber's line collected is passed to described MCU chip by described Hall current sensor, and described MCU chip utilizes AD integrated on it to convert the analog quantity that Hall current sensor exports to digital signal and is supplied to described CPU (central processing unit).
Further, described MCU chip is provided with SPI interface, and described current digital signal is transmitted by described SPI interface.
The present invention also provide a kind of utilize above-mentioned can the metering method of multichannel point energy metering device of modularization expansion, it is characterized in that, comprise the following steps:
(1) voltage acquisition unit and current acquisition module gather voltage transient data on measuring apparatus installation place and subscriber's line and electric current transient data respectively;
(2) A/D converter converts each simulating signal that step (1) collects to digital signal, and voltage sampling signal is multiplied with each road current sampling signal by digital multiplier by CPU (central processing unit), obtains the instantaneous power of each road user;
(3) average active power of each road user in △ t is obtained by wave digital lowpass filter;
(4) CPU (central processing unit) carries out discrete digital integration to the active power of each user to the time, and obtaining user has delivery;
(5) supply user's query display after being stored by net result or upload through communication unit.
According to the present invention of said structure, its beneficial effect is, the electric energy meter mounting means that Every household has an ammeter under the alternative concentrated dress table occasion of the present invention, support moduleization is expanded, only need a table apparatus main frame, and according to the quantity flexible configuration current acquisition submodule number of user, by concentrated collection, focus on, centralized displaying, concentrate the mode uploaded to gather ordinarily resident's power information that concentrated dress is shown, reduce metering outfit cost of investment, decrease maintenance workload, save table case installing space.Metering process of the present invention is simple, has saved unnecessary step, the possibility of having saved Dose times He having made mistakes.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present invention;
Fig. 2 is the structural representation of current acquisition inside modules of the present invention;
Fig. 3 is the syndeton schematic diagram between the present invention and outside line;
Fig. 4 is metering method process flow diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is conducted further description:
As shown in Figure 1, a kind of can modularization expansion Multi-path electricity energy metering device, comprise CPU (central processing unit), infrared unit, card reading unit, storage unit, battery unit, Power Management Unit, liquid crystal display, keyboard unit, voltage acquisition unit, multichannel electric current acquisition module (i.e. current acquisition submodule) and communication unit, CPU (central processing unit) respectively with infrared unit, card reading unit, storage unit, liquid crystal display, keyboard unit, voltage acquisition unit, multichannel electric current acquisition module and communication unit connect, and be connected with battery unit by Power Management Unit, wherein:
(1) CPU (central processing unit)
CPU (central processing unit) is the minimum system ensureing normal work, is responsible for the task of calling whole system, manages all system peripherals.
(2) infrared unit
Infrared unit supports that peripheral hardware is by the associated user's power information in the infra-red communications port reading device of device, as Customs Assigned Number, user's name, table code, electricity, rate etc.
(3) card reading unit
Card reading unit supports that user reads in measuring apparatus that store with user-dependent power information, as Customs Assigned Number, user's name, table code, electricity, rate etc. by subscriber card.
(4) storage unit
Storage unit is used for User Profile information, each voltage, the user power utilization data of current module collection, the result of calculation of CPU (central processing unit) and the relevant historical data etc. that memory storage obtains from metering automation system or Marketing Management Information System.
(5) battery unit
Battery unit provides standby power supply for this device, normal continuous operation timer occurring for having a power failure.Rechargeable battery or common batteries is adopted to realize.
(6) Power Management Unit
Voltage transitions on the voltage that battery unit exports by Power Management Unit or circuit becomes stable system power supply voltage.When adopting rechargeable battery, also have Charge Management ability, there is charged state detection, battery electric quantity detection, the low warning of electricity and electricity and be full of the functions such as prompting.
(7) liquid crystal display
Liquid crystal display is used for each setting option corresponding to display keyboard input.In addition, also for showing the power information of user's inquiry.
(8) keyboard
Keyboard is made up of optimum configurations key and multifunctional direction key.Optimum configurations key arranges input for system; Multifunctional direction key is for arranging the position, display screen page turning etc. of cursor.
(9) communication unit
Communication unit is used for carrying out communication with main website, concentrator etc., can be configured as requested, supports the modes such as micropower is wireless, power carrier, GPRS, RS485.
(10) voltage acquisition unit
Voltage acquisition unit is used for the line voltage distribution transient data of Real-time Collection measuring apparatus installed position, and these data are supplied to CPU (central processing unit) for calculating the power information of user;
(11) current acquisition module
As shown in Figure 2, Hall current sensor and MCU chip is provided with in current acquisition module, MCU chip is provided with SPI interface, and current acquisition module utilizes the electric current instantaneous flow on Hall current sensor collection subscriber's line, and the AD conversion of simulating signal on MCU that sensor exports becomes digital signal.Current digital signal is supplied to CPU (central processing unit) for the electric energy metrical of user and electrical energy consumption analysis by SPI interface.
As shown in Figure 3, CPU (central processing unit), infrared unit, card reading unit, storage unit, battery unit, liquid crystal display, keyboard unit, voltage acquisition unit and communication unit are assembled into integrative-structure, this integrative-structure is device main frame, device main frame is arranged on the main line of subscriber's line inlet wire, current acquisition module is located on the branch line of subscriber's line inlet wire, and current acquisition module is connected by signal wire with device main frame.
As shown in Figure 4, utilize the metering method of above-mentioned measuring apparatus, comprise the following steps:
(1) voltage sampling signal of voltage acquisition unit harvester main frame installation place
u(
t k ),
t k be
kindividual sampling instant;
(2) current sampling signal on each bar circuit of current acquisition module acquires user
i i (
t k ) (0<
i≤
n,
ninstallation quantity for current acquisition module);
(3) measuring apparatus adopts A/D converter that the current analog signal at the voltage at voltage acquisition unit place and each current acquisition module place is converted to digital signal, CPU (central processing unit) carries out multiplying to voltage signal and each road current signal, obtains the power instantaneous flow of each user
P i (
t k )
=U(
t k )*
I i (
t k )
(4) carry out digital low-pass filtering, obtain
△ taverage active power in moment;
(5) CPU (central processing unit) carries out to the time active energy that discrete digital integration obtains user to the active power of each user
E i (
t)
=∑P i (
t k )*
△t
(6) store result of calculation supply user's inquiry, liquid crystal display or upload through communication module.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
By reference to the accompanying drawings exemplary description is carried out to patent of the present invention above; the realization of obvious patent of the present invention is not subject to the restrictions described above; as long as have employed the various improvement that method is conceived and technical scheme is carried out of patent of the present invention; or the design of patent of the present invention and technical scheme directly applied to other occasion, all in protection scope of the present invention without to improve.
Claims (7)
1. one kind can modularization expansion Multi-path electricity energy metering device, it is characterized in that, comprise CPU (central processing unit), infrared unit, card reading unit, storage unit, battery unit, liquid crystal display, keyboard unit, voltage acquisition unit, multichannel electric current acquisition module and communication unit, described CPU (central processing unit) respectively with described infrared unit, described card reading unit, described storage unit, described battery unit, described liquid crystal display, described keyboard unit, described voltage acquisition unit, described multichannel electric current acquisition module and described communication unit connect, wherein,
Described CPU (central processing unit) is responsible for the task of calling whole system, manages all system peripherals,
Described infrared unit supports that external unit is by the associated user's power information in infra-red communications port reading device,
Described card reading unit supports that user reads in measuring apparatus that store with user-dependent power information by subscriber card,
Described storage unit is for storing the User Profile information obtained from metering automation system or Marketing Management Information System, each voltage, the user power utilization data of described current acquisition module acquires, the result of calculation of described CPU (central processing unit) and relevant historical data
Described battery unit provides standby power supply for whole device, and when occurring for having a power failure, holdout device normal continuous runs,
Described liquid crystal display is used for each setting option corresponding to display keyboard input, for showing the power information of user's inquiry,
Described keyboard comprises optimum configurations key and multifunctional direction key, described optimum configurations key be used for system input is set, described multifunctional direction key for arranging position, the display screen page turning of cursor,
Described communication unit is used for carrying out communication with main website, concentrator,
Described voltage acquisition unit is used for the line voltage distribution transient data of Real-time Collection measuring apparatus installed position,
Electric current instantaneous flow on described current acquisition module acquires subscriber's line, and be supplied to described CPU (central processing unit) for the electric energy metrical of user and electrical energy consumption analysis.
2. according to claim 1 can modularization expansion Multi-path electricity energy metering device, it is characterized in that, described CPU (central processing unit), described infrared unit, described card reading unit, described storage unit, described battery unit, described liquid crystal display, described keyboard unit, described voltage acquisition unit and described communication unit are assembled into integrative-structure, and this integrative-structure is device main frame.
3. according to claim 2 can modularization expansion Multi-path electricity energy metering device, it is characterized in that, described device main frame is arranged on the main line of subscriber's line inlet wire, and described current acquisition module is located on the branch line of subscriber's line inlet wire.
4. according to claim 2 can modularization expansion Multi-path electricity energy metering device, it is characterized in that, described device main frame also comprises Power Management Unit, described Power Management Unit two ends connect described battery unit and described CPU (central processing unit) respectively, and the voltage transitions on the voltage that battery unit exports by described Power Management Unit or circuit becomes stable system power supply voltage.
5. according to claim 1 can modularization expansion Multi-path electricity energy metering device, it is characterized in that, Hall current sensor and MCU chip is provided with in described current acquisition module, electric current instantaneous flow on the subscriber's line collected is passed to described MCU chip by described Hall current sensor, and described MCU chip utilizes AD integrated on it to convert the analog quantity that Hall current sensor exports to digital signal and is supplied to described CPU (central processing unit).
6. according to claim 5 can modularization expansion Multi-path electricity energy metering device, it is characterized in that, described MCU chip is provided with SPI interface, and described current digital signal is transmitted by described SPI interface.
7. utilize as claim 1-6 as described in any one can the metering method of multichannel point energy metering device of modularization expansion, it is characterized in that, comprise the following steps:
(1) voltage acquisition unit and current acquisition module gather voltage transient data on measuring apparatus installation place and subscriber's line and electric current transient data respectively;
(2) convert each simulating signal that step (1) collects to digital signal, voltage sampling signal is multiplied with each road current sampling signal by digital multiplier by CPU (central processing unit), obtains the instantaneous power of each road user;
(3) obtain each road user by wave filter to exist
△ taverage active power in moment;
(4) CPU (central processing unit) carries out integration to the active power of each user to the time, and what obtain user has delivery;
(5) supply user's query display after being stored by net result or upload through communication unit.
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| CN201510622404.9A CN105182020A (en) | 2015-09-28 | 2015-09-28 | Multi-path electric energy metering device and method capable of being expanded in modularization mode |
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| CN201510622404.9A CN105182020A (en) | 2015-09-28 | 2015-09-28 | Multi-path electric energy metering device and method capable of being expanded in modularization mode |
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Cited By (1)
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| CN109374964A (en) * | 2018-10-30 | 2019-02-22 | 四川洪诚电气科技有限公司 | Use electric detection method and Internet of things system based on Internet of Things |
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