CN1131435C - Electric energy metering equipment based on electric load - Google Patents
Electric energy metering equipment based on electric load Download PDFInfo
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- CN1131435C CN1131435C CN00133061A CN00133061A CN1131435C CN 1131435 C CN1131435 C CN 1131435C CN 00133061 A CN00133061 A CN 00133061A CN 00133061 A CN00133061 A CN 00133061A CN 1131435 C CN1131435 C CN 1131435C
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Abstract
The present invention relates to an electric energy metering device based on an electric load, which comprises a display control unit and an electrical energy metering unit, wherein a metering input terminal of the electrical energy metering unit is connected to a power source leading-in loop of an electric load, and a metering output terminal of the electrical energy metering unit is connected with an input terminal of the display control unit. The electric energy metering device can meter and display electrical energy consumed in the running of a load electric appliance in any condition, can be combined with a control circuit of a conventional electric appliance, or can be externally connected with an electric appliance or be built in the electric appliance. The control of electric power consumption of electric equipment can be achieved by presetting electrical energy consumption quantity so as to realize the economic control of energy consumption of the electric equipment and provide support for realizing electrical energy consumption optimization.
Description
Technical field
The present invention relates to the electric energy metrical technology, be specifically related to a kind of electric power meter, can show and preset single with any one period power consumption of electric loading based on the usefulness electric loading.
Background technology
The tradition electric energy metrical all is based on circuit, its very flexible.When the electricity consumption load running, can't grasp it in the concrete power consumption situation of certain hour, more can't in time make things convenient for the understanding electricity consumption to load on the electric energy situation that is consumed when moving under different phase or the varying environment.Simultaneously, existing electric energy meter is just as a kind of electric energy metrical foundation, and can't small-sizedly singlely realize that any one period presets consumed power on electric loading a certain.
Summary of the invention
The objective of the invention is to, provide a kind of based on the electric power meter of electric loading, can carry out the demonstration of electric energy metrical and preset with electric loading single, and provide support for optimizing electric energy.
The object of the present invention is achieved like this, construct a kind of based on electric power meter with electric loading, comprise indicative control unit and electric energy metrical unit, wherein, the metering input end of electric energy metrical unit is connected described with in the electric power incoming line loop of electric loading, and the output of described electric energy metrical unit is connected to the input end of described indicative control unit.
According to of the present invention based on in the electric power meter of electric loading, described electric energy metrical unit has sample rate current input end and sampled voltage input end to be connected respectively and loop-coupled current sensing unit of electric power incoming line and the voltage sensor unit of using electric loading, described electric energy metrical unit has the electric weight output terminal to be connected to the input end of described indicative control unit, described electric energy metrical unit comprises an electrical energy measuring IC, described indicative control unit comprises display unit and peripheral control unit and the microprocessor that described display unit and peripheral control unit are controlled, and described microprocessor is built-in or be circumscribed with storer.
According to of the present invention based on in the electric power meter of electric loading, described microprocessor can with the shared microprocessor of electricity consumption load controller.
According to of the present invention based on in the electric power meter of electric loading, when described microprocessor receives the electric weight reset signal with the zero clearing of electric weight memory; Open the beginning during signal receiving electric quantity metering, the record starting time is added in the described electric weight storer after the electric weight from the electric energy metrical unit converted; When receiving the electric quantity metering end signal, the end of record (EOR) time, stop electric weight and add up; When receiving the electric weight shows signal, electric quantity data in the current electric quantity storer and recording time information data are shown by display unit.
According to of the present invention based on in the electric power meter of electric loading, described electrical energy measuring IC, comprise current sampling circuit, voltage sampling circuit, the A/D converter that is connected with current sampling circuit, the A/D converter that is connected with voltage sampling circuit, with above-mentioned two multipliers that the converter output signal is input, and with the numerical frequency converter of multiplier output carrying out numerical frequency conversion.
According to of the present invention based on in the electric power meter of electric loading, described electrical energy measuring IC can be model be AD775X series or with the integrated circuit of its functional equivalent.
According to of the present invention based on in the electric power meter of electric loading, the output terminal of described electrical energy measuring IC is connected with two light emitting diodes respectively, is respectively applied for the indication reversed polarity and connects and steal electricity and show and normal electric energy gage work state.
According to of the present invention based on in the electric power meter of electric loading, described voltage sensor element is divider resistance combination or voltage transformer (VT).
According to of the present invention based on in the electric power meter of electric loading, described current sample element is copper-manganese resistance or current transformer, wherein, the elementary of described current transformer is serially connected in in the electric power loop of electric loading the secondary input end that is connected to described electrical energy measuring IC of described electric current mutual inductance unit.
According to of the present invention based on in the electric power meter of electric loading, described electric energy metrical unit is articulated in described outer or be installed in described with in the electric loading with electric loading by connector.
According to of the present invention based on in the electric power meter of electric loading, described indicative control unit comprises electricity meter counter, described register comprises stepper motor and by the machine carousel counter of its driving.
According to of the present invention based on in the electric power meter of electric loading, described display unit comprises LED or the LCD display element that is independent of with electric loading, this display element can be installed on the box.
According to of the present invention based on in the electric power meter of electric loading, described display unit comprises LED or the LCD display part with described electricity consumption load sharing.
Implement provided by the invention based on electric power meter with electric loading, can under any condition, institute's consumed power in the electricity consumption load running be measured and show, can be incorporated into the control circuit of conventional electrical appliance, perhaps external with electric loading or wherein built-in, reach power consumption control by presetting power consumption with electric loading, realization is to the energy consumption economic control of electric loading, and provides support with electrically optimized for realizing.
Below in conjunction with drawings and Examples, further specify characteristics of the present invention.
Description of drawings
Fig. 1 is a principle block diagram of the present invention;
Fig. 2 is the further principle schematic of the present invention;
Fig. 3 is the internal logic structure synoptic diagram of electric energy detection chip among Fig. 2;
Fig. 4 is the principle schematic of one embodiment of the invention;
Fig. 5 is the principle schematic of one embodiment of the invention;
Fig. 6 is the circuit theory diagrams of another embodiment of the present invention.
Embodiment
As shown in Figure 1, of the present invention based on electric power meter with electric loading, comprise indicative control unit 3 and electric energy metrical unit 2, wherein, the metering input end of electric energy metrical unit 2 is connected with in the electric power incoming line loop of electric loading 1, and the output of electric energy metrical unit 2 is connected to the input end of indicative control unit 3.Indicative control unit 3 comprises control, input, shows output and stores a plurality of links.Wherein, control can be adopted microprocessor, and input is used for producing the metering commencing signal, metering end signal and metering shows signal etc., and showing then provides electric quantity metering to show.The link that electric energy metrical unit 2 needs to realize comprises: the A/D conversion of current sample, voltage sample, current sampling data, the A/D conversion of voltage sample value, the digital output of above-mentioned two A/D conversion is carried out multiplication calculating, and multiplication result of calculation is delivered to numerical frequency change, with the output of numerical frequency converter or directly show by electricity meter counter, this moment, indicative control unit 3 just was equivalent to register, as shown in Figure 4, register 5 comprises stepper motor and by the machine carousel counter of its driving.Among Fig. 4, also comprise an ac/dc power supply unit 6, its input termination alternating current, the DC voltage-stabilizing of output then offers integrated circuit 23.
As Fig. 2 and shown in Figure 4, voltage sample 22 can realize that electric current 21 can be sampled and can be realized by copper-manganese resistance or current transformer by divider resistance or voltage transformer (VT).And the A/D of the A/D of current sampling data conversion, voltage sample value conversion and to carrying out through the output numerical value after above-mentioned two A/D conversion multiplication calculates and the numerical frequency conversion, AD7750 (or AD775X series) integrated circuit that can be by special chip such as U.S. ADI company (among Fig. 2 23) is realized.
As shown in Figure 2, for the electric energy metrical of realizing consumer shows and control function, also need to comprise microprocessor 33, LCD display unit 31, electricity consumption load control unit 32 and program and data-carrier store 34.Comprise that also input block 35 is used to realize to the standard of condition that electric energy metrical is set with electric loading, time period, metering and the control under satisfying condition.In other words, this circuit is to design for the embedded power measuring apparatus with microprocessor.Its metering process can be realized like this, presses reset switch, when microprocessor 33 receives this reset signal, with the zero clearing of electric weight memory; Press the metering start button, microprocessor opens the beginning during signal receiving electric quantity metering, and the record starting time is added in the described electric weight storer after the electric weight from electric energy metrical unit 2 converted; Press the metering conclusion button, when microprocessor 33 receives the electric quantity metering end signal, the end of record (EOR) time, stop electric weight and add up; Press electric weight the Show Button, microprocessor shows electric quantity data in the current electric quantity storer and recording time information data when receiving the electric weight shows signal by display unit 31.
At Fig. 3 the logical organization of Fig. 1 special secondary school with the electric energy integrated circuit is shown.As seen, electrical energy measuring IC 23 comprises current sampling circuit 231, voltage sampling circuit 232, the A/D converter 233 that is connected with current sampling circuit 231, the A/D converter 234 that is connected with voltage sampling circuit 232, with above-mentioned two converter output signals multiplier 235 that is input, and the numerical frequency converter 236 that the numerical frequency conversion is carried out in multiplier 235 outputs.In conjunction with Fig. 2, can pass through current transformer, divider resistance realization electric current, voltage sample respectively, and A/D conversion and control are realized by the special electric energy detection chip, be the special chip that the AD775X of U.S. ADI company series detects for the electric energy meter electric energy, this chip the logic composition as shown in Figure 3.Referring to Fig. 4, the output terminal of AD775X is connected with two light emitting diodes, and one of them LED41 is used to indicate the electric energy metrical module oppositely to connect, and another LED42 is used to indicate electric energy metrical module normal operating condition.Load among Fig. 4 can be various household electrical appliance or commercial appliances such as refrigerator, washing machine, air conditioner, micro-wave oven, dish-washing machine, electric heater, water dispenser, electromagnetic oven with electric loading promptly.
Fig. 5 illustrates the circuit theory diagrams of one embodiment of the invention.Wherein, the AD775X family chip of employing U.S. ADI company directly is incorporated into electric loading and carries out the electric weight indication.Thereby realize the real-time demonstration of the electric energy operating position of single household electrical appliances.RESET pin, CF pin, the REVP pin of special-purpose electric energy meter chip AD7755 link to each other with the corresponding pin of microprocessor MCU respectively, and other pin all connects on request, wherein current signal, V2N pin and the V2P input voltage signal of V1P pin and V1N pin input load; Microprocessor also is connected with peripherals, as LED display circuit, button, memory device, clock circuit.Show the employing register herein.
In the circuit theory diagrams of the another embodiment of the present invention shown in Fig. 6, this circuit can be combined in in the original controller of electric loading, for example, can be incorporated in various household electrical appliance such as refrigerator, washing machine, air conditioner, micro-wave oven, dish-washing machine, electric heater, water dispenser, electromagnetic oven or the commercial appliance.Realize electric current, voltage sample by current transformer, divider resistance, A/D conversion and control are realized by the special electric energy detection chip, be the special chip that the AD775X of U.S. ADI company series detects for the electric energy meter electric energy, the logic of this chip is formed as shown in Figure 3.The signal of the filtering mlultiplying circuit of this chip output is directly delivered on the I/O port of existing microprocessor of consumer or special microprocessor.Thereby the electric energy of realizing single household electrical appliances uses in real time and shows, from the true power consumption situation that to understand these household electrical appliances (power saving or take) that goes up directly perceived, give the user one and use reference quantity in real time, also can show in real time by regular electricity consumption, make the user grasp the power consumption rule of used household electrical appliances, reach the purpose of saving electric energy.Among Fig. 6, microprocessor 33 receives the metering signal that electric energy chip 23 provides, and has added individual code translator before LCD shows, and is connected with input button 35, storer 34 and clock circuit.This microprocessor can be shared with the original control microprocessor with electric loading.
Claims (11)
1, a kind of based on electric power meter with electric loading, it is characterized in that, comprise indicative control unit (3) and electric energy metrical unit (2), wherein, the metering input end of electric energy metrical unit (2) is connected in the described electric power incoming line loop with electric loading (1), the output of described electric energy metrical unit (2) is connected to the input end of described indicative control unit (3), there are sample rate current input end and sampled voltage input end in described electric energy metrical unit (2), connect respectively and the loop-coupled current sensing unit of electric power incoming line (21) and voltage sensor unit (22) of using electric loading, there is the electric weight output terminal described electric energy metrical unit (2), be connected to the input end of described indicative control unit (3), described electric energy metrical unit (2) comprises an electrical energy measuring IC (23), described indicative control unit (3) comprises display unit (31) and peripheral control unit (32) and the microprocessor (33) that described display unit (31) and peripheral control unit (32) are controlled, described microprocessor (33) is built-in or be circumscribed with storer (34), when described microprocessor (33) receives the electric weight reset signal with the zero clearing of electric weight memory; Open the beginning during signal receiving electric quantity metering, the record starting time is added in the described electric weight storer after the electric weight from electric energy metrical unit (2) converted; When receiving the electric quantity metering end signal, the end of record (EOR) time, stop electric weight and add up; When receiving the electric weight shows signal, electric quantity data in the current electric quantity storer and recording time information data are shown by described display unit (31).
2, according to the described device of claim 1, it is characterized in that, described microprocessor (33) can with electric loading (a 1) controller shared microprocessor.
3, according to the described device of claim 1, it is characterized in that, described electrical energy measuring IC (23) comprises current sampling circuit (231), voltage sampling circuit (232), the A/D converter (233) that is connected with current sampling circuit (231), the A/D converter (234) that is connected with voltage sampling circuit (232), with above-mentioned two converter output signals multiplier (235) that is input, and with the numerical frequency converter (236) of multiplier (235) output carrying out numerical frequency conversion.
According to the described device of claim 3, it is characterized in that 4, described electrical energy measuring IC (23) is that model is the integrated circuit of AD775X series.
According to the described device of claim 2, it is characterized in that 5, the output terminal of described electrical energy measuring IC (23) is connected with two light emitting diodes (41,42) respectively, be respectively applied for the indication reversed polarity and connect electricity demonstration and the normal electric energy gage work state stolen.
According to the described device of claim 1, it is characterized in that 6, described voltage sensor element (22) is divider resistance combination or voltage transformer (VT).
7, according to the described device of claim 1, it is characterized in that, described current sample element (21) is copper-manganese resistance or current transformer, wherein, described current transformer elementary is serially connected in the electric power loop of electrical equipment, the secondary input end that is connected to described electrical energy measuring IC (23) of described electric current mutual inductance unit.
According to any one described device among the claim 1-7, it is characterized in that 8, described electric energy metrical unit (2) is articulated in outside the described load appliance by connector or is installed in the described load appliance.
According to the described device of claim 1, it is characterized in that 9, described indicative control unit (3) comprises register (5), described register (5) comprises stepper motor and machine carousel counter driven by stepper motors.
According to the described device of claim 1, it is characterized in that 10, described display unit (31) comprises LED or the LCD display element that is independent of electrical equipment, this display element can be installed on the box.
According to the described device of claim 1, it is characterized in that 11, described display unit (31) comprises LED or the LCD display part with described electricity consumption load sharing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00133061A CN1131435C (en) | 2000-11-18 | 2000-11-18 | Electric energy metering equipment based on electric load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00133061A CN1131435C (en) | 2000-11-18 | 2000-11-18 | Electric energy metering equipment based on electric load |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1354368A CN1354368A (en) | 2002-06-19 |
| CN1131435C true CN1131435C (en) | 2003-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00133061A Expired - Fee Related CN1131435C (en) | 2000-11-18 | 2000-11-18 | Electric energy metering equipment based on electric load |
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| Country | Link |
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| CN (1) | CN1131435C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354404B (en) * | 2011-10-11 | 2014-04-02 | 刘海燕 | Recorder for recording running status of medical equipment and recording method thereof |
| CN104535830A (en) * | 2014-10-30 | 2015-04-22 | 国家电网公司 | Power consumption monitoring method and device |
| CN105182022A (en) * | 2015-10-27 | 2015-12-23 | 国网山东利津县供电公司 | Electric quantity depositing device and method during meter installation, power connection and exchange |
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2000
- 2000-11-18 CN CN00133061A patent/CN1131435C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1354368A (en) | 2002-06-19 |
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