CN105068040A - Electric energy metering device and household appliance using same - Google Patents
Electric energy metering device and household appliance using same Download PDFInfo
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- CN105068040A CN105068040A CN201510578446.7A CN201510578446A CN105068040A CN 105068040 A CN105068040 A CN 105068040A CN 201510578446 A CN201510578446 A CN 201510578446A CN 105068040 A CN105068040 A CN 105068040A
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- 238000004891 communication Methods 0.000 claims description 14
- 230000004044 response Effects 0.000 claims description 8
- 230000006266 hibernation Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 9
- 230000006870 function Effects 0.000 description 16
- 238000010586 diagram Methods 0.000 description 14
- 238000004378 air conditioning Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000007958 sleep Effects 0.000 description 1
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Abstract
The invention discloses an electric energy metering device and a household appliance applying the same, wherein a controller connected with a metering circuit is arranged, the controller calculates calibration parameters according to voltage parameters and current parameters acquired by the metering circuit and the standard values of the voltage parameters and the standard values of the current parameters, and the voltage parameters and the current parameters acquired by the metering circuit are calibrated based on the calibration parameters in a working mode, so that a large-scale calibration device is not needed, and only a power supply and a standard load are needed to automatically calibrate, therefore, the calibration process of the electric energy metering device is greatly simplified, the efficiency is improved, and the cost is reduced.
Description
Technical field
The present invention relates to field of measuring techniques, be specifically related to a kind of electric power meter and apply its household electrical appliance.
Background technology
Electric power meter is applied to manufacturing intelligence ammeter usually.The metering of intelligent electric meter needs higher measuring accuracy, and it needs to be calibrated by the calibration flow process of special large-scale calibrating installation according to regulation usually.For the electric power meter that accuracy requirement is relatively low, such calibrating mode efficiency is low, and cost is high, is unfavorable for large-scale production.
Summary of the invention
In view of this, the object of the present invention is to provide and a kind ofly do not rely on the electric power meter that standard calibration platform carries out calibrating and the household electrical appliance applying it.
First aspect, provides a kind of electric power meter, comprising:
Metering circuit, obtains corresponding voltage parameter and current parameters for carrying out sampling to the input voltage of load and input current;
Controller, for calculating calibration parameter according to the voltage parameter of described acquisition and current parameters and voltage parameter standard value and current parameters standard value, and based on described calibration parameter, the voltage parameter of described acquisition and current parameters are calibrated in the operational mode, and calculate according to the voltage parameter through calibrating and current parameters and export measuring parameter;
Wherein, described voltage parameter standard value and described current parameters standard value are respectively predetermined voltage parameter and the current parameters of the standard termination for calibrating.
Preferably, described measuring parameter comprises at least one item in the effective voltage of described load, power, power factor (PF), frequency and accumulative power consumption within a predetermined period of time.
Preferably, described controller is used for entering calibration mode when receiving calibration command.
Preferably, described controller be used for first carry out voltage parameter calibration, voltage parameter carry out after having calibrated current parameters calibration or,
Described controller is used for carrying out current parameters calibration, and current parameters carries out the calibration of voltage parameter after having calibrated.
Preferably, described controller is used for periodically carrying out the calculating of the acquisition of voltage parameter and current parameters, calibration and measuring parameter; Or
The calculating of the acquisition of voltage parameter and current parameters, calibration and measuring parameter is carried out in response to measurement instruction.
Preferably, described controller also comprises:
Storer, for storing described calibration parameter, and, after the calculating of measuring parameter completes, store described measuring parameter.
Preferably, described electric power meter also comprises:
Standby power supply;
Described controller is switched to park mode when described voltage parameter exception being detected;
Described controller is powered by described standby power supply in the hibernation mode, maintains clock and runs.
Preferably, described controller detect described voltage parameter recover normal time switch back mode of operation by park mode.
Preferably, described controller also for periodically sending described measuring parameter by communication interface, or
Described controller is also for sending described measuring parameter in response to query statement by communication interface.
Second aspect, provides a kind of household electrical appliance, comprising:
Function execution means, for performing the inherent function of described household electrical appliance; And
Electric power meter as above, is connected between power supply and described function execution means.
The present invention is by arranging the controller be connected with metering circuit, and the voltage parameter making controller obtain according to described metering circuit in the calibration mode and current parameters and described voltage parameter standard value and current parameters standard value calculate calibration parameter, and the voltage parameter obtained metering circuit based on described calibration parameter in the operational mode and current parameters are calibrated, make not need large-scale calibrating installation, power supply and standard termination is only needed just can automatically to calibrate, thus, enormously simplify the calibration process of electric power meter, improve efficiency, reduce cost.
Accompanying drawing explanation
By referring to the description of accompanying drawing to the embodiment of the present invention, above-mentioned and other objects, features and advantages of the present invention will be more clear, in the accompanying drawings:
Fig. 1 is the schematic diagram of the household electrical appliance of the embodiment of the present invention;
Fig. 2 is the schematic diagram of the electric power meter of the embodiment of the present invention;
Fig. 3 is the schematic diagram of the calibration system of the electric power meter of the embodiment of the present invention;
Fig. 4 is the constitutional diagram of the controller of the electric power meter of the embodiment of the present invention;
Fig. 5 is the process flow diagram that the controller of the electric power meter of the embodiment of the present invention carries out calibrating;
Fig. 6 is another constitutional diagram of the controller of the electric power meter of the embodiment of the present invention;
Fig. 7 is the interface schematic diagram that the household electrical appliance of the embodiment of the present invention show electric energy metrical information.
Embodiment
Based on embodiment, present invention is described below, but the present invention is not restricted to these embodiments.In hereafter details of the present invention being described, detailedly describe some specific detail sections.Do not have the description of these detail sections can understand the present invention completely for a person skilled in the art yet.In order to avoid obscuring essence of the present invention, known method, process, flow process, element and circuit do not describe in detail.
In addition, it should be understood by one skilled in the art that the accompanying drawing provided at this is all for illustrative purposes, and accompanying drawing is not necessarily drawn in proportion.
Meanwhile, should be appreciated that in the following description, " circuit " refers to the galvanic circle connected and composed by electrical connection or electromagnetism by least one element or electronic circuit.When " being connected to " another element when claiming element or circuit or claiming element/circuit " to be connected to " between two nodes, it can be directly couple or be connected to another element or can there is intermediary element, the connection between element can be physically, in logic or its combine.On the contrary, " be directly coupled to " when claiming element or " being directly connected to " another element time, mean that both do not exist intermediary element.
Unless the context clearly requires otherwise, similar words such as " comprising ", " comprising " otherwise in whole instructions and claims should be interpreted as the implication that comprises instead of exclusive or exhaustive implication; That is, be the implication of " including but not limited to ".
In describing the invention, it is to be appreciated that term " first ", " second " etc. are only for describing object, and instruction or hint relative importance can not be interpreted as.In addition, in describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
Fig. 1 is the schematic diagram of the household electrical appliance of the embodiment of the present invention.
In the present embodiment, household electrical appliance can be the powerful household electrical appliance such as air-conditioning, refrigerator, water heater.As shown in Figure 1, household electrical appliance 1 comprise function execution means 11, electric power meter 12 and control device 13.Wherein, function execution means 11 is for performing the inherent function of household electrical appliance 1.Such as, when household electrical appliance are air-conditioning, function execution means 11 is whole refrigerating/heating and the supply air system of air-conditioning.When household electrical appliance are refrigerator, function execution means 11 is refrigeration and the defrost system of refrigerator.When household electrical appliance are water heater, function execution means 11 is its heating and heat-insulation system.Because the power consumption of control system is relatively very low, therefore, function execution means 11 is main power-consuming component of household electrical appliance.
Electric power meter 12 is connected between function execution means 11 and power supply, for obtaining and exporting measuring parameter, described measuring parameter comprises at least one item in the effective voltage of function execution means 11, power, power factor (PF), frequency and accumulative power consumption within a predetermined period of time.Control device 13 is connected with described function execution means 11 and described electric power meter 12, for the running status according to measuring parameter controlling functions actuating unit 11 or show at least part of measuring parameter by display device 15 or be sent to small part measuring parameter by communicator 16 to control terminal 2.Carrying out control according to measuring parameter to function execution means 11, that household electrical appliance can be made automatically to carry out is energy-conservation.And display or send metrical information the user of household electrical appliance 1 can be made to understand the power consumption state of household electrical appliance, thus make more reasonably control select.This is all conducive to the energy saving promoting household electrical appliance.Wherein, communicator 16 can also directly communicate with control terminal 2, or is communicated with control terminal 2 by LAN router 4, or is communicated with control terminal 2 by the Internet access service device 3.Household electrical appliance 1 can also comprise on setting and body for carrying out the input media 14 of man-machine interaction.
Fig. 2 is the schematic diagram of the electric power meter of the embodiment of the present invention.
As shown in Figure 2, electric power meter 12 comprises metering circuit 121 and controller 122.
Wherein, metering circuit 121 obtains voltage parameter and current parameters for carrying out sampling to the input voltage of load and input current.Described load is the power device that electric power meter 12 will carry out measuring.For the electric power meter 12 of the present embodiment, it needs at calibration phase to have the standard termination of predetermined input voltage and input current for load, and after being applied to household electrical appliance, its load is function execution means 11.Particularly, metering circuit 121 can use voltage/current sample integrated circuit and corresponding peripheral circuit to form.
Controller 122 calculates calibration parameter for the voltage parameter that obtains according to metering circuit 121 in the calibration mode and current parameters and voltage parameter standard value and current parameters standard value, and the voltage parameter obtained metering circuit based on described calibration parameter in the operational mode and current parameters are calibrated, and calculate measuring parameter according to through the voltage parameter of calibration and current parameters.After calculating obtains measuring parameter, measuring parameter can store or export via data line by controller 122.
Wherein, described voltage parameter standard value and current parameters standard value are respectively predetermined voltage parameter and the current parameters of the standard termination for calibrating.
Preferably, controller 122 can comprise storer 122a, and it is for storing calibration parameter and storing the measuring parameter calculating and obtain.Preferably, storer 122a is EEPROM (EEPROM (Electrically Erasable Programmable Read Only Memo)).
Fig. 3 is the schematic diagram of the calibration system of the electric power meter of the embodiment of the present invention.
As shown in Figure 3, when needs are calibrated electric power meter 12, electric power meter 12 is connected to standard termination 5.After standard termination 5 works on power, it has predetermined input voltage and input current, and the parameter of its correspondence is voltage parameter standard value and current parameters standard value.Voltage parameter standard value and current parameters standard value are pre-stored in storer 123.Calibration parameter can be obtained according to the sample voltage parameter that gets and current parameters of voltage parameter standard value and current parameters standard value and electric power meter 12.Calibration parameter is used for calibrating voltage parameter and current parameters, exports more accurately to make electric power meter 12 provide.Calibration parameter is stored in storer 122a.
Electric power meter 12 is being arranged on after in household electrical appliance 1, and it works in the operational mode at every turn after powering on.Controller 122 gets the input voltage of load and voltage parameter corresponding to input current and current parameters by metering circuit 121, then the calibration parameter of reading pre-stored in storer 123 is calibrated voltage parameter and current parameters, to obtain the accurate voltage parameter through calibration and current parameters.Based on above-mentioned parameter, controller 122 can calculate measuring parameter further, also, and at least one item in the effective voltage of load, power, power factor (PF), frequency and accumulative power consumption within a predetermined period of time.Calculating the measuring parameter obtained can be stored in storer 122a, reads for during follow-up needs.
Alternatively, controller 122 periodically carries out the calculating of the acquisition of voltage parameter and current parameters, calibration and measuring parameter in the operational mode, and the measuring parameter more stored in new memory 122a after having calculated, the real-time of measuring parameter can be ensured thus.
Alternatively, controller 122 also can carry out the calculating of the acquisition of voltage parameter and current parameters, calibration and measuring parameter in the operational mode in response to measurement instruction, and the measuring parameter more stored in new memory after having calculated.Wherein, measurement instruction can receive via the communication interface of controller 122.Thus, more metrological operation trigger mode can be provided.
Be stored in the control device 13 that the measuring parameter in storer 123 periodically can be sent to household electrical appliance 1 by communication interface (such as serial line interface) by controller 122 to process further.
Thus, by arranging the controller be connected with metering circuit, and the voltage parameter making controller obtain according to described metering circuit in the calibration mode and current parameters and described voltage parameter standard value and current parameters standard value calculate calibration parameter, and the voltage parameter obtained metering circuit based on described calibration parameter in the operational mode and current parameters are calibrated, make not need large-scale calibrating installation, power supply and standard termination is only needed just can automatically to calibrate, thus, enormously simplify the calibration process of electric power meter, improve efficiency, reduce cost.
Alternatively, electric power meter 12 can be arranged by the toggle switch such as arranged thereon and be in calibration mode or mode of operation.
Alternatively, electric power meter 12 can also receive calibration command in response to controller 12 by communication interface and enter calibration mode, and exits calibration mode according to the control of controller 122 after calibration terminates.Preferably, described communication interface can be serial line interface, and this is also the communication interface that controller is conventional.Thus, batch setting can be carried out by communication interface to needing the electric power meter 12 calibrated, improving the production efficiency of some electric power meter further.
Fig. 4 is the constitutional diagram of the controller of the electric power meter of the embodiment of the present invention.
As shown in Figure 4, after powering on, whether controller 122 receives calibration command by periodically detecting communication interface, if received, then enters calibration mode, if do not received, then remains on mode of operation.After entering calibration mode, after calibration terminates (also namely, after all calibration parameters have calculated), controller 122 exits calibration mode and is switched to mode of operation.
Fig. 5 is the process flow diagram that the controller of the electric power meter of the embodiment of the present invention carries out calibrating.
As shown in Figure 5, in the calibration mode, the control flow of controller comprises:
Step 510, judge whether voltage parameter has been calibrated, if not, perform step 520, if so, perform step 540.
Step 520, calibration voltage parameter.
Step 530, judging voltage parameter calibration whether success, if success, to performing step 540, otherwise returning step 510.
Preferably, indicate the calibration for voltage parameter whether successful by arranging voltage parameter calibration mark.
Step 540, calibration current parameter.
Step 550, judge current parameters calibration whether success, if success, will calibration mode be exited, otherwise return step 510.
Preferably, step 550 can by the pattern by arranging switch controller to calibration mode mark or mode flags.
Also namely, controller 122 first carries out voltage parameter calibration in the calibration mode, carries out the calibration of current parameters after voltage parameter has been calibrated again, completes calibration mode described in backed off after random in calibration.Calibration due to other parameter often needs to use voltage parameter, therefore, first carries out calibration the calibration efficiency of other parameter (such as current parameters) can be made higher to voltage parameter.
Should be understood that and also first can carry out current parameters calibration, and then carry out the calibration of voltage parameter.
In a preferred embodiment, electric power meter 12 is powered by the power circuit of household electrical appliance when normal work.But when running into the chance failures such as power failure, the standby power supply 123 that electric power meter 12 can be switched to by carrying is powered, to ensure that controller 122 keeps running.In order to prevent the electricity of standby power supply 123 from exhausting, controller 122 (such as, detects that voltage parameter is abnormal) in such cases can be to enter sleep modes.
Fig. 6 is another constitutional diagram of the controller of the electric power meter of the embodiment of the present invention.
As shown in Figure 6, after powering on, whether controller 122 receives calibration command by periodically detecting communication interface, if received, then enters calibration mode, if do not received, then remains on mode of operation.
After entering calibration mode, after calibration terminates (also namely, after all calibration parameters have calculated), controller 122 exits calibration mode and is switched to mode of operation.
In calibration mode or mode of operation, as long as detect that voltage parameter is abnormal (such as, voltage parameter is lower than predetermined threshold), controller 122 enters into park mode, in the hibernation mode, controller 122 does not carry out the calculating of the acquisition of conventional voltage parameter and current parameters, calibration and measuring parameter, and only maintains and periodically detect voltage parameter and clock runs.Thus, can ensure when power supply trouble or power fail, can correctly writing time, with ensure such as to add up this kind of parameter with time correlation of power consumption recovering normal after still can normally calculate.
In the hibernation mode, if controller 122 detects that voltage parameter recovers normal, then switch and get back to mode of operation.
Further, controller 122 periodically or in response to query statement can also send measuring parameter by its communication interface.
Such as, for household electrical appliance 1, controller 122 periodically can send to control device 13 measuring parameter comprising accumulative power consumption, power etc.After control device 13 receives above-mentioned measuring parameter, send it to display device 14 and show, or be sent to control terminal 2 by communicator 15 and show.The universal mobile communication terminal that described control terminal 2 can be special telepilot or be communicated with household electrical appliance 1 by mobile Internet.
Again such as, control device 13 can receive measuring parameter query statement by communicator 15, and to the instruction of controller 122 forwarding inquiries.In response to this query statement, controller 122 can send measuring parameter by communication interface to control device 13, is forwarded to control terminal 2 or display device 13 further for it.
Fig. 7 is the interface schematic diagram that the household electrical appliance of the embodiment of the present invention show electric energy metrical information.
As shown in Figure 7, in interface, show the power consumption on the same day, of that month every day power consumption change curve and current power, this runs the statistical informations such as power consumption, also show according to current running status, 1 degree electricity expectation use current power consumption state of 1 hour simultaneously.
Thus, the household electrical appliance 1 being provided with electric power meter 12 can provide more abundant information feed back for user, are conducive to helping user to understand the power consumption state of household electrical appliance, thus make more reasonable or energy-conservation control selection.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, to those skilled in the art, the present invention can have various change and change.All do within spirit of the present invention and principle any amendment, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an electric power meter, comprising:
Metering circuit, obtains corresponding voltage parameter and current parameters for carrying out sampling to the input voltage of load and input current;
Controller, for calculating calibration parameter according to the voltage parameter of described acquisition and current parameters and voltage parameter standard value and current parameters standard value, and based on described calibration parameter, the voltage parameter of described acquisition and current parameters are calibrated in the operational mode, and calculate measuring parameter according to the voltage parameter through calibrating and current parameters;
Wherein, described voltage parameter standard value and described current parameters standard value are respectively predetermined voltage parameter and the current parameters of the standard termination for calibrating.
2. electric power meter as claimed in claim 1, is characterized in that, described measuring parameter comprises at least one item in the effective voltage of described load, power, power factor (PF), frequency and accumulative power consumption within a predetermined period of time.
3. electric power meter according to claim 1, is characterized in that, described controller is used for entering calibration mode when receiving calibration command.
4. electric power meter according to claim 1, is characterized in that, described controller is used for carrying out voltage parameter calibration, and voltage parameter carries out the calibration of current parameters after having calibrated; Or,
Described controller is used for carrying out current parameters calibration, and current parameters carries out the calibration of voltage parameter after having calibrated.
5. electric power meter according to claim 1, is characterized in that, described controller is used for periodically carrying out the calculating of the acquisition of voltage parameter and current parameters, calibration and measuring parameter; Or,
Described controller is used for the calculating carrying out the acquisition of voltage parameter and current parameters, calibration and measuring parameter in response to measurement instruction.
6. electric power meter according to claim 5, is characterized in that, described controller also comprises:
Storer, for storing described calibration parameter, and the measuring parameter stored after the calculating of measuring parameter completes.
7. electric power meter according to claim 1, is characterized in that, described electric power meter also comprises:
Standby power supply;
Described controller is switched to park mode when described voltage parameter exception being detected;
Described controller is powered by described standby power supply in the hibernation mode, maintains clock and runs.
8. electric power meter according to claim 7, is characterized in that, described controller detect described voltage parameter recover normal time switch back mode of operation by park mode.
9. electric power meter according to claim 1, is characterized in that, described controller is also for periodically sending described measuring parameter by communication interface; Or,
Described controller is also for sending described measuring parameter in response to query statement by communication interface.
10. household electrical appliance, comprising:
Function execution means, for performing the inherent function of described household electrical appliance; And
Electric power meter according to any one of claim 1-9, is connected between power supply and described function execution means.
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| CN201510578446.7A CN105068040B (en) | 2015-09-11 | 2015-09-11 | Electric energy metering device and household appliance using same |
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| CN201510578446.7A CN105068040B (en) | 2015-09-11 | 2015-09-11 | Electric energy metering device and household appliance using same |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107607903A (en) * | 2017-09-19 | 2018-01-19 | 珠海格力电器股份有限公司 | Calibration method and device for electric energy metering equipment |
| CN108445287A (en) * | 2018-04-10 | 2018-08-24 | 南京邮电大学 | A kind of electrical appliance electric energy surveying device |
| CN109490596A (en) * | 2018-12-03 | 2019-03-19 | 国网河南省电力公司南阳供电公司 | A kind of electric power metering device |
| CN109596167A (en) * | 2018-12-03 | 2019-04-09 | 四川虹美智能科技有限公司 | A kind of equipment production test method, system and test terminal |
| CN110285553A (en) * | 2019-07-01 | 2019-09-27 | 珠海格力电器股份有限公司 | Air conditioner power metering method, power detection circuit and air conditioner |
| CN112098923A (en) * | 2020-09-28 | 2020-12-18 | 怀化建南机器厂有限公司 | Smart electric meter calibration method and device |
| CN112946559A (en) * | 2021-02-01 | 2021-06-11 | 宁夏隆基宁光仪表股份有限公司 | Smart electric meter detection method based on power detection |
| CN114019442A (en) * | 2021-10-21 | 2022-02-08 | 深圳市科陆电子科技股份有限公司 | Electric energy metering error calibration and verification method and device and storage medium |
| CN114126151A (en) * | 2021-12-15 | 2022-03-01 | 苏州欧普照明有限公司 | Electric parameter calibration method and device of LED power supply, storage medium and LED lamp |
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| CN114126151A (en) * | 2021-12-15 | 2022-03-01 | 苏州欧普照明有限公司 | Electric parameter calibration method and device of LED power supply, storage medium and LED lamp |
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