CN201466441U - Power supply device with wireless metering function - Google Patents
Power supply device with wireless metering function Download PDFInfo
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- CN201466441U CN201466441U CN2009200731745U CN200920073174U CN201466441U CN 201466441 U CN201466441 U CN 201466441U CN 2009200731745 U CN2009200731745 U CN 2009200731745U CN 200920073174 U CN200920073174 U CN 200920073174U CN 201466441 U CN201466441 U CN 201466441U
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Abstract
The utility model provides a power supply device with a wireless metering function. Electric parameter monitoring class products in the existing market have the problems of simple function, little monitoring parameters and the like and can not meet the requirement of the market. The power supply device comprises a power supply plug, a power supply socket, a voltage sampling unit, a current sampling unit, a metering unit and a display interface unit, wherein the power supply plug is used for being inserted into the power supply socket which provides commercial power; the power supply socket is connected with the power supply plug; the voltage sampling unit is connected with the power supply socket and is used for measuring and obtaining voltage flowing through the power supply socket; the current sampling unit is connected with the power supply socket and is used for measuring and obtaining current flowing through the power supply socket; the metering unit is connected with the voltage sampling unit and the current sampling unit, amplifies and filters the measured voltage and the measured current, and calculates voltage parameters, current parameters, active power, apparent power, power factors, frequency and electric energy parameters; and the display interface unit is connected with the metering unit and is used for receiving the parameters and outwards outputting the parameters.
Description
Technical field
The utility model relates to a kind of supply unit, relates in particular to a kind of supply unit with function of measuring, and this socket can also outwards be launched continuous data with wireless mode, combines with radio receiver, can realize that the metering of far-end shows.
Background technology
In today of scientific and technological develop rapidly, the application of electricity in people's life more and more widely, especially of a great variety, function is advanced, be full of the appearing on the market of large quantities of household electrical appliance of more human oriented designs, really bring many convenience and enjoyment to daily life, greatly enriched people's material, culture life.But sharply increasing and increased use of electric equipment makes that the power load of family continues to increase, power utilization environment is complicated more, and the electricity consumption dispute that causes thus and the problem of secure context are more and more.The practical operation situation of power utilization environment and electrical appliance is day by day paid attention to by people.In recent years, being used to monitor household electricity environmental classes product is accordingly constantly introduced to the market.
Yet the series products of the monitoring of the electrical quantity on the market now, its function is in general all fairly simple, and monitoring parameter is few, mostly only calculates the electricity charge, and perhaps monitoring voltage, electric current, the several power consumption parameter of active power simply can not satisfy the needs in market.
The utility model content
The purpose of this utility model is to provide a kind of supply unit with wireless function of measuring, and this socket can measure multiple parameters, exactly to enabling demonstration when providing electric power for electrical equipment.
Another purpose of the present utility model is to provide a kind of supply unit with wireless function of measuring, and this socket can outwards provide continuous data with wireless mode.
According to above-mentioned purpose, the supply unit with wireless function of measuring that the utility model provides comprises:
Attaching plug is used to be inserted into the supply socket that civil power is provided;
Supply socket links to each other with described attaching plug;
It is characterized in that described supply unit also comprises:
The voltage sample unit links to each other with described supply socket, is used to measure and the voltage of the described supply socket that obtains to flow through;
Current sampling unit links to each other with described supply socket, is used to measure and the electric current of the described supply socket that obtains to flow through;
Metering units links to each other with described current sampling unit with described voltage sample unit, the voltage and current that records amplified and filtering, and calculating voltage parameter, current parameters, active power, apparent power, power factor, frequency and electrical energy parameter; And
The display interface unit links to each other with described metering units, is used to receive voltage parameter, current parameters, active power, apparent power, power factor, frequency and the electrical energy parameter of described metering units output, and outwards exports these parameters.
In described supply unit with wireless function of measuring, described supply unit also comprises:
Wireless transmitting unit, link to each other with described metering units, be used to receive voltage parameter, current parameters, active power, apparent power, power factor, frequency and the electrical energy parameter of described metering units output, and described voltage parameter, current parameters, active power, apparent power, power factor, frequency and electrical energy parameter coding back outwards launched with wireless mode.
In described supply unit with wireless function of measuring, described supply unit also comprises:
Memory cell links to each other with described metering units, is used to store voltage parameter, current parameters, active power, apparent power, power factor, frequency and the electrical energy parameter that described metering units provides.
In described supply unit with wireless function of measuring, described memory cell is EEPROM.
As mentioned above, supply unit with wireless function of measuring of the present utility model can provide and comprise voltage parameter, current parameters, active power, apparent power, power factor, multiple parameters such as frequency and electrical energy parameter, the user can be according to the demonstration of these parameters, in time power utilization environment is monitored, can also compare with the family expenses ammeter that power office collects foundation as the electricity charge, be equivalent to monitor simultaneously the ruuning situation of family expenses ammeters, prevent to cause unnecessary economic loss, monitor every month electricity consumption situation better owing to the reason (as flying away) of family expenses ammeter.
In addition, supply unit of the present utility model also provides the function of wireless transmission continuous data, makes demonstration and metering separately, and the monitor mode of convenience and safety is provided, and is humanized.
Description of drawings
Fig. 1 is the shape assumption diagram with supply unit of wireless function of measuring of the present utility model;
Fig. 2 is the structured flowchart of supply unit of the present utility model;
Fig. 3 shows the signal processing link of voltage channel effective value;
Fig. 4 shows the signal processing link that the power channel effective value calculates;
Fig. 5 shows the computational process of apparent power;
Fig. 6 shows the calculation process of electrical energy parameter.
Embodiment
To describe an embodiment of the present utility model below with reference to the accompanying drawings in detail.
Fig. 1 shows the outline drawing with supply unit of wireless function of measuring of the present utility model.As shown in Figure 1, this supply unit comprises attaching plug 10 and supply socket 20.Attaching plug 10 and supply socket 20 are provided with on the housing, are provided with various circuit units in housing, and the detailed description of relevant each circuit unit will be carried out hereinafter.During use, attaching plug 10 is inserted in the supply socket that civil power is provided, obtains civil power electric power, supply socket 20 is communicated with attaching plug 10 inner, and various electrical equipment can be inserted in this supply socket 20, thereby obtains electric power.
See also Fig. 2, Fig. 2 shows the structured flowchart of supply unit of the present utility model.Supply unit of the present utility model also comprises except attaching plug shown in Fig. 1 10 and supply socket 20:
Current sampling unit 1 and voltage sample unit 2, current sampling unit 1 and voltage sample unit 2 are connected respectively in the supply socket 20, are used to measure and the electric current and the voltage of the supply socket that obtains to flow through.Usually, current sampling unit 1 can adopt induction coil, utilizes electromagnetic induction, the current value of the supply unit that obtains to flow through; Voltage sample unit 2 adopts the divider resistance string, is parallel on the supply unit;
Metering units 3, the signal of these metering units 3 received current sampling units 1 and voltage sample unit 2 outputs. and since the signal of current sampling unit 1 and 2 outputs of voltage sample unit generally a little less than, therefore, in metering units 3, elder generation is to current sampling signal and voltage sampling signal amplifies and filtering, calculate then, obtain voltage parameter, current parameters, active power, apparent power, power factor, frequency and electrical energy parameter, form with embodiment provides a kind of calculating voltage parameter below, current parameters, active power, apparent power, power factor, the mode of frequency and electrical energy parameter, but be to be understood that, relevant these CALCULATION OF PARAMETERS are routine techniques, and those skilled in the art can adopt other prior art to realize these CALCULATION OF PARAMETERS fully.
1, voltage effective value CALCULATION OF PARAMETERS
At first the root-mean-square value to continuous signal V (t) is defined as Vrms=1/T* ∫
0 TV
2(t) dt opens radical sign!
To time sampling, effective value comprise signal square, be averaged and open radical sign:
The Vrms=1/N* ∑
I=1 NV
2(i) dtk opens radical sign.
Fig. 3 describes the signal processing link of voltage channel effective value in detail, and the effective value of voltage channel is taken at voltage channel obtained sampled value under the waveform sampling pattern.Because low pass filter LPF1, this effective value will have slight decay.Voltage effective value is stored in no symbol 24 bit registers, and its ratio that refreshes is CLKIN (input clock)/4.When width of cloth signal 0.5V was expired in the analog input end input, the output of low pass filter LPF1 was swung between 2518H and DAE8H, and the value of effective value in the VRMS register that exchanges when expiring the amplitude input approximately is 1561400D (17D338H).For the input signal of full amplitude and 1/20 full amplitude, the voltage effective value measurement in the chip provides ± and 0.5% with interior accuracy, the conversion from the register value to the volt realizes by external register.For noise jamming is dropped to minimum, when the input voltage zero passage, read the effective value register synchronously, and, repeatedly read and average.The voltage transitions formula is: URMS=VRMS*4.69*10-4*1080/1643.8.Wherein VRMS is the voltage effective value register value.
2. current effective value CALCULATION OF PARAMETERS
Chip calculates the effective value of current channel and voltage channel simultaneously at different registers, Fig. 4 describes the signal processing link that the current channel effective value calculates in detail, the current channel effective value is taken at current channel obtained sampled value under the waveform sampling pattern, this effective value is stored in no symbol 24 bit registers (IRMS), the lowest order of current channel effective value register equals the minimum point of waveform sampling in the current channel, and its ratio that refreshes is CLKIN/4.
When the full width of cloth voltage of analog input end input ± 0.5V, ADC will have the output encoder of an about ± 2642412D, effective value when full amplitude exchanges input equals 1868467D (1C82B3H), input signal for full amplitude and 1/100 full amplitude, current effective value measurement in the chip provides 1% with interior accuracy, conversion from the register value to the amperage realizes by external microprocessor, in order to arrive minimum noise jamming, when the input voltage zero passage, read the effective value register synchronously, and will repeatedly read and average.The voltage transitions formula is: CURMS=IRMS*7.73*10-5*1080/1.44.Wherein IRMS is the voltage effective value register value.
3. active power CALCULATION OF PARAMETERS
Electrical power is defined as electric energy and flows to the speed of load from power supply, and is represented by the product of voltage and current waveform.Resulting instantaneous power waveform is called the instantaneous power signal, and it equals each instantaneous energy flow rate.The unit of power is W or J/S.Formula (3) provides the expression formula of instantaneous power signal in the AC system.
In the formula: the V=voltage effective value
The I=current effective value
P(t)＝V(t)*I(t)
P(t)＝VI-VIcos(2ωt) (3)
Mean value in integer (n) times line voltage cycle is provided by formula 4
P＝1/nT*∫
0 nTP(t)dt＝VI (4)
T=line voltage cycle in the formula; P is called active power or effective power.
4. apparent power CALCULATION OF PARAMETERS
The apparent power formula definition is: P=UI, wherein U, I are effective value.
Fig. 5 shows the computational process of apparent power.In the signal processing link of tangible power back-off, the apparent power gain register can be carried out the adjusting of apparent power, writes 12 complement of two's two's complements to the power gain register and can regulate this gain.
OutputVAGAIN＝[ActivePower*(1+VAGAIN/2
12)]
5. the calculating of electrical energy parameter
As previously mentioned, power definition is the speed of stream.This is defined in can use formula (5) expression on the mathematics
P＝dE/dt (5)
In the formula: P=power; The E=electric energy
On the contrary, electric energy is provided by the integration to power
E＝∫Pdt (6)
Chip is by carrying out the integration that continuous integration is finished the active power signal to the active power signal in 49 active energy registers.The high 24 bit representation active power energy registers of this internal register.This discrete time adds up or sues for peace and is equivalent to integration in continuous time.Formula (7) illustrates its relation.
E＝∫P(t)dt＝Lim
t＝0{∑
i＝1 NP(nT)*T}(7)
N is the discrete time hits in the formula, and T is the sampling period.
Fig. 6 has provided the calculation process of electrical energy parameter.
6. cycle (frequency) CALCULATION OF PARAMETERS
The period measurement register is no symbol 15 bit registers, and each cycle refreshes.When CLKIN-3.579545, the resolution of register is 2.2US/LSB, 0.013% when this is illustrated in linear period and is 50HZ.
7. power factor CALCULATION OF PARAMETERS
Power factor is to realize by calculating that by above active power that records and apparent power its expression formula is:
PF＝P
W/P
VA
See also Fig. 2 again, supply unit with wireless function of measuring of the present utility model also comprises display interface unit 4, this display interface unit 4 is connected on the metering units 3, receives voltage parameter, current parameters, active power, apparent power, power factor, frequency and the electrical energy parameter of metering units 3 outputs.Display interface unit 4 converts these parameters to and is applicable to such as display unit data presented forms such as LCD display or light-emitting diode displays, and outwards exports these parameters.Therefore, this supply unit provides the function of outside output parameter, after receiving on this supply unit, can demonstrate these parameters to an external display unit on external display unit.
In order to provide parameter to show more easily, supply unit of the present utility model can also be provided with a wireless transmitting unit 6. these wireless transmitting unit and be connected on the metering units 3, receive voltage parameter, current parameters, active power, apparent power, power factor, frequency and the electrical energy parameter of metering units 3 outputs. comprise a coding unit (diagrammatic sketch shows) in the transmitter unit 6, be used for described voltage parameter, current parameters, active power, apparent power, power factor, frequency and electrical energy parameter are encoded, outwards launch with wireless mode then.
In addition, for after power down, still can preserve relevant parameter, in supply unit of the present utility model, also be provided with a memory cell 5, this memory cell 5 is connected on the metering units 3, is used to store voltage parameter, current parameters, active power, apparent power, power factor, frequency and the electrical energy parameter that described metering units provides.This memory cell 5 can adopt such as nonvolatile memories such as EEPROM.
Claims (4)
1. supply unit with wireless function of measuring comprises:
Attaching plug is used to be inserted into the supply socket that civil power is provided;
Supply socket links to each other with described attaching plug;
It is characterized in that described supply unit also comprises:
The voltage sample unit links to each other with described supply socket, is used to measure and the voltage of the described supply socket that obtains to flow through;
Current sampling unit links to each other with described supply socket, is used to measure and the electric current of the described supply socket that obtains to flow through;
Metering units links to each other with described current sampling unit with described voltage sample unit, the voltage and current that records amplified and filtering, and calculating voltage parameter, current parameters, active power, apparent power, power factor, frequency and electrical energy parameter; And
The display interface unit links to each other with described metering units, is used to receive voltage parameter, current parameters, active power, apparent power, power factor, frequency and the electrical energy parameter of described metering units output, and outwards exports these parameters.
2. the supply unit with wireless function of measuring according to claim 1 is characterized in that, described supply unit also comprises:
Wireless transmitting unit, link to each other with described metering units, be used to receive voltage parameter, current parameters, active power, apparent power, power factor, frequency and the electrical energy parameter of described metering units output, and described voltage parameter, current parameters, active power, apparent power, power factor, frequency and electrical energy parameter coding back are outwards launched with wireless mode.
3. the supply unit with wireless function of measuring according to claim 1 is characterized in that, described supply unit also comprises:
Memory cell links to each other with described metering units, is used to store voltage parameter, current parameters, active power, apparent power, power factor, frequency and the electrical energy parameter that described metering units provides.
4. the supply unit with wireless function of measuring according to claim 3 is characterized in that, described memory cell is EEPROM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200731745U CN201466441U (en) | 2009-06-01 | 2009-06-01 | Power supply device with wireless metering function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200731745U CN201466441U (en) | 2009-06-01 | 2009-06-01 | Power supply device with wireless metering function |
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| CN201466441U true CN201466441U (en) | 2010-05-12 |
Family
ID=42393788
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200731745U Expired - Fee Related CN201466441U (en) | 2009-06-01 | 2009-06-01 | Power supply device with wireless metering function |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064436A (en) * | 2010-11-11 | 2011-05-18 | 华中科技大学 | Electrical equipment energy-consumption monitoring power wire integrating wireless network communication function |
| CN102096458A (en) * | 2010-12-08 | 2011-06-15 | 深圳市航嘉驰源电气股份有限公司 | Digital power supply and external display device connected with same |
| CN102339500A (en) * | 2010-07-21 | 2012-02-01 | 普罗特科技有限公司 | Electric appliance charging device |
| CN102411089A (en) * | 2011-08-02 | 2012-04-11 | 山东电力集团公司 | Direct-current metering method of direct-current electric energy metering device for electric automobile |
| CN102445576A (en) * | 2011-09-08 | 2012-05-09 | 北京煜邦电力技术有限公司 | Method for performing temperature compensation on metering chip and manganin sheet in electric meter |
| CN102539907A (en) * | 2010-12-27 | 2012-07-04 | 夏普株式会社 | Electric power measuring device |
| CN103033533A (en) * | 2012-12-17 | 2013-04-10 | 吉林大学 | Measurement method for specific heat capacity of liquid |
| CN103682850A (en) * | 2012-09-10 | 2014-03-26 | 华为技术有限公司 | Metering socket and control method thereof |
| CN105699758A (en) * | 2016-03-02 | 2016-06-22 | 中国人民解放军91663部队 | Power factor meter with metering interface and method thereof |
| CN107994406A (en) * | 2016-10-27 | 2018-05-04 | 常州市小先信息技术有限公司 | Intelligent socket and its control method based on Internet of Things |
| CN108896854A (en) * | 2018-08-21 | 2018-11-27 | 北京双竞科技有限公司 | Attaching plug formula integration Internet of Things power param eter supervision device |
| CN108937701A (en) * | 2018-06-26 | 2018-12-07 | 广东宝乐机器人股份有限公司 | Window wiping robot and its condition detection method |
| CN114076842A (en) * | 2021-11-18 | 2022-02-22 | 中国电信股份有限公司 | Switching power supply, electric energy metering and displaying method and device thereof, and storage medium |
| CN114280354A (en) * | 2021-12-21 | 2022-04-05 | 镇江市百汇电器有限公司 | Three-phase system non-contact high-voltage live detection circuit |
-
2009
- 2009-06-01 CN CN2009200731745U patent/CN201466441U/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102339500A (en) * | 2010-07-21 | 2012-02-01 | 普罗特科技有限公司 | Electric appliance charging device |
| CN102064436A (en) * | 2010-11-11 | 2011-05-18 | 华中科技大学 | Electrical equipment energy-consumption monitoring power wire integrating wireless network communication function |
| CN102096458B (en) * | 2010-12-08 | 2013-05-08 | 深圳市航嘉驰源电气股份有限公司 | Digital power supply and external display device connected with same |
| CN102096458A (en) * | 2010-12-08 | 2011-06-15 | 深圳市航嘉驰源电气股份有限公司 | Digital power supply and external display device connected with same |
| CN102539907A (en) * | 2010-12-27 | 2012-07-04 | 夏普株式会社 | Electric power measuring device |
| CN102411089A (en) * | 2011-08-02 | 2012-04-11 | 山东电力集团公司 | Direct-current metering method of direct-current electric energy metering device for electric automobile |
| CN102411089B (en) * | 2011-08-02 | 2014-03-19 | 山东电力集团公司 | Direct-current metering method of direct-current electric energy metering device for electric automobile |
| CN102445576A (en) * | 2011-09-08 | 2012-05-09 | 北京煜邦电力技术有限公司 | Method for performing temperature compensation on metering chip and manganin sheet in electric meter |
| CN103682850A (en) * | 2012-09-10 | 2014-03-26 | 华为技术有限公司 | Metering socket and control method thereof |
| CN103682850B (en) * | 2012-09-10 | 2016-08-17 | 华为技术有限公司 | Metering socket and control method thereof |
| CN103033533A (en) * | 2012-12-17 | 2013-04-10 | 吉林大学 | Measurement method for specific heat capacity of liquid |
| CN105699758A (en) * | 2016-03-02 | 2016-06-22 | 中国人民解放军91663部队 | Power factor meter with metering interface and method thereof |
| CN105699758B (en) * | 2016-03-02 | 2018-10-30 | 中国人民解放军91663部队 | Power-factor meter with metering interface and its method |
| CN107994406A (en) * | 2016-10-27 | 2018-05-04 | 常州市小先信息技术有限公司 | Intelligent socket and its control method based on Internet of Things |
| CN108937701A (en) * | 2018-06-26 | 2018-12-07 | 广东宝乐机器人股份有限公司 | Window wiping robot and its condition detection method |
| CN108896854A (en) * | 2018-08-21 | 2018-11-27 | 北京双竞科技有限公司 | Attaching plug formula integration Internet of Things power param eter supervision device |
| CN114076842A (en) * | 2021-11-18 | 2022-02-22 | 中国电信股份有限公司 | Switching power supply, electric energy metering and displaying method and device thereof, and storage medium |
| CN114280354A (en) * | 2021-12-21 | 2022-04-05 | 镇江市百汇电器有限公司 | Three-phase system non-contact high-voltage live detection circuit |
| CN114280354B (en) * | 2021-12-21 | 2023-11-14 | 镇江市百汇电器有限公司 | Non-contact high-voltage live detection circuit of three-phase system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20180601 |