CN100454025C - Electric energy meter and power monitor system - Google Patents
Electric energy meter and power monitor system Download PDFInfo
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- CN100454025C CN100454025C CNB2006100273964A CN200610027396A CN100454025C CN 100454025 C CN100454025 C CN 100454025C CN B2006100273964 A CNB2006100273964 A CN B2006100273964A CN 200610027396 A CN200610027396 A CN 200610027396A CN 100454025 C CN100454025 C CN 100454025C
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Abstract
The present invention relates to an electric energy meter and a power monitor system of the technical field of an electronic instrument. The electric energy meter is provided with two modules of a sensor module and a communication module, wherein the two modules are controlled by a microprocessor. The sensor module completes sampling and calculation for electrical parameters, and the communication module completes data interchange with the sensor module and processes network communication by a TCP/IP protocol stack. The power monitor system comprises the electric energy meter which is provided with the sensor module and the communication module, and a user monitor device. The user monitor device is provided with an electric energy meter management module for displaying and storing data which is received from the communication module by a network, and managing the electric energy meter. The electric energy meter can simultaneously monitor and control a great amount of independent electrical equipment. The electric energy meter is provided with a web server and a power monitor system, so that the present invention can transmit the collected electrical parameters by internet and collect the electrical parameters for a long time and store the electrical parameters to the user monitor device.
Description
Technical field
The present invention relates to the electronic instrument technical field, specifically is a kind of electric energy meter and power monitor system, promptly can carry out power measurement processing, computing, the electric energy meter of network service processing and the power monitor system that possesses this electric energy meter.
Background technology
In order to reduce the use amount of electric energy, be necessary correct and measure each electric equipment at low cost or the electric energy consumption amount of each particular range of buildings.At present, as the electric energy meter of measuring consumer power a kind of digital power meter of being furnished with microprocessor is arranged.Shown in Japanese documentation 5-172859, pick up input voltage waveform and input current waveform and carry out the A/D conversion, obtain the transient power value according to the voltage and current data after the conversion, calculate the average power content during the acquired signal then, the product of average power content and time is energy value.Digital power meter can carry out numerical value sampling processing and electric energy calculation process, it is characterized by to realize the multi-system simply, and than mechanical type induced power meter accuracy height.
But above-mentioned digital power meter does not have remote control function, so must go to the scene to read the electric energy operating position of electric equipment.In addition, not continuous sampling to input voltage waveform and input current waveform, but sample at regular intervals, so error might occur on the data of being sampled.
Summary of the invention
The objective of the invention is to be provides a kind of electric energy meter and power monitor system at deficiency of the prior art, makes it have the characteristics of high-precision low cost by the electricity usage amount of the Internet supervision and control apparatus equipment.
The present invention is achieved by the following technical solutions:
The 1st electric energy meter that the aspect proposed of the present invention has sensor assembly and communication module.Sensor assembly is used for the voltage and current signal of electrical equipment is carried out sampling processing, also utilizes the measured value of being sampled to carry out the calculation process of current value, magnitude of voltage, performance number.Communication module is used for carrying out exchanges data with described sensor assembly and carrying out network communication by the ICP/IP protocol stack and handle.The sampling of voltage that described sensor assembly carried out, electric current and calculation process and described communication module the carry out processing with exchanges data described sensor assembly and network communication be to control by a microprocessor.
Usually, the sensor assembly of electric energy meter is to be carried out the voltage and current signal sampling processing, also utilized the measured value of being sampled to carry out the calculation process of current value, magnitude of voltage, performance number by a microprocessor.Communication module is to be controlled by another microprocessor, finishes with the sensor assembly exchanges data and by the ICP/IP protocol stack and carries out the network communication processing.
But, sensor assembly and the shared microprocessor of communication module in the 1st electric energy meter that the aspect proposed of the present invention, promptly by a microprocessor carry out sensor assembly the voltage and current signal sampling processing, and utilize the measured value sampled carry out the calculation process of current value, magnitude of voltage, performance number and communication module carry out exchanges data with described sensor assembly and network communication is handled.Therefore greatly reduce the price of electric energy meter.
In the 2nd electric energy meter that the aspect proposed of the present invention, when described microprocessor execution is carried out sampling processing process (P1) to described voltage and current, the exchanges data of described calculation process process (P2) and described communication module and sensor assembly and network communication treatment progress (P3) are in ready state, when carrying out described calculation process process (P2), the exchanges data and the network communication treatment progress (P3) that described voltage and current are carried out sampling processing process (P1) and described communication module and sensor assembly are in ready state, when the exchanges data of carrying out described communication module and sensor assembly and network communication treatment progress (P3), described voltage and current is carried out sampling processing process (P1) and described calculation process process (P2) is in ready state.
Described microprocessor has Flash storer and RAM.Carry out the sampling processing process of voltage and current by the sampling pattern that directly reads storer (DMA).At this, voltage and current sampling processing process (P1), the exchanges data of calculation process process (P2) and communication module and sensor assembly and network communication treatment progress (P3) start by interrupt routine respectively, thereby have realized realizing P1 by a microprocessor, P2, the process of P3.
The 3rd electric energy meter that the aspect proposed of the present invention, sensor assembly can carry out sampling processing to the voltage and current signal of separate a plurality of electrical equipments; Described microprocessor carries out sampling processing (P1, P1 ', P1 ") to a plurality of electrical equipments by the mistiming.Here not only the energy data of an electric equipment is measured, can also be carried out sampling processing the voltage and current signal of separate a plurality of electrical equipments.So can improve the service efficiency of electric energy meter.
The 4th electric energy meter that the aspect proposed of the present invention, sensor assembly also comprises switching part, is used to switch the electrical equipment that need carry out the voltage and current signal sampling processing; Described microprocessor switches the electrical equipment that need carry out the voltage and current signal sampling processing before carrying out calculation process process (P2) or network communication treatment progress (P3).When from a plurality of electric equipments, the electric equipment of appointment being carried out voltage and current sampling processing process (P1) here, carry out the switching of electric equipment to specify the electric equipment that will carry out calculation process process (P2) or network communication treatment progress (P3) by switching part earlier.
The 5th electric energy meter that the aspect proposed of the present invention, described microprocessor is regulated the time interval of voltage and current signal being carried out sampling processing according to power cycle.
In the present invention with a microprocessor carry out the voltage and current signal sampling processing of sensor assembly and calculation process and communication module carry out exchanges data with described sensor assembly and network communication is handled.So the sampling to input voltage waveform and input current waveform is not continuous sampling, but they are sampled at regular intervals, so on the data of sampling, error might occur.At this, regulate the time interval of voltage and current signal being carried out sampling processing according to power cycle, try to achieve optimal sampling interval.Go sampling according to this sampling interval, can minimally suppress data error because of interval sampling brought.
The 6th electric energy meter that the aspect proposed of the present invention, described microprocessor is revised current value, magnitude of voltage, performance number according to power cycle and sampling processing interval.
Here the data error in order to suppress to bring because of interval sampling is revised current value, magnitude of voltage, performance number.At this moment according to power cycle and sampling interval current value, magnitude of voltage, performance number are revised, can minimally have been suppressed the data error brought because of interval sampling, thereby improved the precision of electric energy meter.
The 7th electric energy meter that the aspect proposed of the present invention, described microprocessor is revised current value, magnitude of voltage, performance number according to the final measured value of the curtage of being sampled.The data error in order to suppress to bring because of interval sampling here, described microprocessor is controlled to the final measured value according to the curtage of being sampled, and current value, magnitude of voltage, performance number are revised.Thereby can draw the most appropriate modified value, thereby improve the precision of electric energy meter.
The 8th electric energy meter that the aspect proposed of the present invention, the microprocessor circuit plate comprises power circuit, mimic channel and digital circuit, wherein, the ground wire of power circuit and mimic channel and digital circuit has common tie point.
Here, for example the earth point of the earth point of the earth point of power circuit and mimic channel and digital circuit is linked on the earth point as common tie point.If each earth point is connected different earth points, be easy to generate because of the different errors that take place of earth point.The power circuit of microprocessor circuit plate and mimic channel and digital circuit have common tie point.Thereby suppressed the error that takes place between tie point, also improved the precision of electric energy meter.
The 9th electric energy meter that the aspect proposed of the present invention, described mimic channel, its amplifier circuit that comprises is a differential amplifier circuit.
The 10th electric energy meter that the aspect proposed of the present invention, communication module also has Web server, the power parameter of renewable measurement on the Web server webpage.
Here the communication module because of electric energy meter has Web server, can transmit the power parameter that electric energy meter is measured by the Internet.
The 11st power monitor system that the aspect proposed of the present invention, comprise: electric energy meter and user's monitoring arrangement with sensor assembly and communication module, wherein user's monitoring arrangement also has the electric energy meter administration module, be used to show and store the data that receive from described communication module by network, and electric energy meter is managed.
The 12nd power monitor system that the aspect proposed of the present invention, the electric energy meter administration module can be carried out on user's monitoring arrangement, and is sent on user's monitoring arrangement by network by the Web server of electric energy meter communication module and carries out.
The 13rd power monitor system that the aspect proposed of the present invention, user's monitoring arrangement also comprises memory module, the long-time running situation of memory module record electric energy meter and be sent to the electrical quantity of electric energy meter administration module, the content that can show memory by the mode of form and figure simultaneously from electric energy meter.And the electric energy meter administration module can be carried out on user's monitoring arrangement for a long time, and collects data and the preservation that transmits from the Web server of electric energy meter communication module.
The 14th power monitor system that the aspect proposed of the present invention, electric energy meter administration module can be set on user's monitoring arrangement and collect the data start time, collect the data stand-by time and collect data time at interval.
The 15th power monitor system that the aspect proposed of the present invention, the electric energy meter administration module can and be measured current time with measured value and be stored on the memory module of described user's monitoring arrangement.
15 power monitor systems that the aspect proposed in the 11st aspect to the of the present invention comprise: electric energy meter and user's monitoring arrangement with sensor assembly and communication module.Wherein, user's monitoring arrangement also has the electric energy meter administration module, can show the data of receiving from communication module by network, and can preserve and the above-mentioned data of computing.Thereby realize the management of any electric energy meter of 10 records that the aspect proposed in the 1st aspect to the of the present invention by network.
Description of drawings
Among Fig. 1, (a) be the outside drawing of electric energy meter, (b) sensor connecting portion enlarged drawing.
Fig. 2 is the principle schematic of multifunctional electric energy meter.
Fig. 3 is the appliance circuit module relation diagram of multifunctional electric energy meter.
Among Fig. 4, (a) being the oscillogram of voltage signal and current signal, (b) is voltage pulse signal figure.
Fig. 5 is the sampling process figure of voltage signal and current signal.
Fig. 6 is the signal period figure of voltage signal.
Among Fig. 7, (a) being voltage pulse signal figure, (b) is the sampling error figure of voltage signal and current signal, (c) is (b) dotted portion enlarged drawing.
Fig. 8 is the power monitor system synoptic diagram.
Fig. 9 is a power monitor system communication mode chart.
Figure 10 is the picture of downloading from the multifunctional electric energy meter Web server.
Figure 11 is the kind of appliance circuit and the display frame that PT/CT leads.
Figure 12 is the interface of accumulative total useful power/when the accumulative total reactance capacity resets.
Figure 13 is the interface when collecting data.
Figure 14 is the configuration of IP address interface.
Figure 15 uploads the interface for Web server.
Among the above-mentioned figure, 1 electric energy meter main body cover, 2 passages, 1 current transformer CT, 3 passages, 1 transformer PT, 4 passages, 2 transformer PT, the 5RJ-45 interface, 6 passages, 2 current transformer CT, 7 passages, 2 current transformer CT, 8 network connections, 9 single-phase-two-wire line of electric force, 10 phase three-wire three line of electric force, 11PT and CT connecting portion, 12 sensor assemblies, 13 communication modules, 14 microprocessor modular circuits, 15 memory module circuit, 16 switch power module circuit, 17 Network Interface Module circuit, 18 signal processing module circuit, the signal processing circuit of 18a circuit 1, the signal processing circuit of 18b circuit 2, the commutation circuit of 18c circuit 1 and circuit 2,19 voltage signals, 20 current signals, 21 voltage pulse signals, 22 read the icon that circuit types and PT/CT lead, and 23 are provided with the icon that circuit types and PT/CT lead, 24 icons that reset useful work/idle work, 25 icon display areas, 26 show the icon of current channel circuit type, 27 channel selecting icons, 28 current time, 29 currencys, 30 aggregate-values, the number of 31 multifunctional electric energy meters is selected icon, the input field, IP address of 32 multifunctional electric energy meters, 33 time setting areas, 34 preserve the setting area, path of file, and 35 start and stop button 36 status bars, 60 microprocessor, 80 user's monitoring arrangements, 100 electric energy meters, 200 power monitor systems.
Embodiment
Below, in conjunction with the accompanying drawings and embodiment illustrate about electric energy meter of the present invention and power monitor system.
Fig. 1 is to measure the outside drawing of the electric energy meter 100 of single-phase-two-wire circuit and phase three-wire three circuit simultaneously.Electric energy meter main body cover 1 is provided with a plurality of tie points 11.Here the current sensor 6,7 of the electrical circuit of the current sensor 2 of the electrical circuit of single-phase-two-wire and transformer 3 and single-phase three-wire and transformer 4 are connected by electrical wiring to respectively on the connecting portion 11.
Shown in Fig. 1 (a), single-phase-two-wire and single-phase three-wire are passages independently mutually.User's monitoring arrangement can be set the circuit types of electric equipment as required, such as single-phase-two-wire and single-phase three-wire and phase three-wire three.When power voltage line 9,10 during less than 240V, the transformer 3,4 among Fig. 1 (a) can omit. Current transformer 2,6,7 is the forcipated mutual-inductor shown in Fig. 1 (b), the user does not need to disconnect the insulation course of line of electric force, only need clip to forcipated mutual-inductor on the line of electric force to get final product.
In addition, this electric energy meter can be measured passage arbitrarily separately.At this moment needn't import the signal of the passage that need not measure.Moreover this electric energy meter does not need extra power supply, and the voltage input of passage 1 or passage 2 can be used as the input of electrical energy meter electricity source module simultaneously.
As Fig. 2 is the system block diagram of electric energy meter 100.As shown in Figure 2, electric energy meter 100 mainly is made up of two parts: sensor assembly STIM 12 and communication module NCAP 13.
The interchange weak signal of being imported changes into the direct current signal of 0～5V by analog signal conditioner device 12d.Electrical quantity counter 12c samples to the direct current signal of 0～5V, and according to instantaneous voltage and current instantaneous value calculating voltage effective value, current effective value, power factor, frequency, net horsepower, useless power, useful work and the idle work of sampling.Sensor electrical subdata base TEDS 12a finishes the management to the electric energy meter working condition, as dispose electric energy meter IP address, the circuit types of the current measured consumer of electric energy meter, the ratio of use transformer summation current transformer are set, the management of consumer power consumption etc.
Communication module NCAP 13 has exchanges data register 13a, ICP/IP protocol processor 13b, and web page server 13c, ICP/IP protocol stack 13d, network controller 13e, and the exchanges data of responsible electric energy meter and client, and carry out network service.
When receiving data, ICP/IP protocol processor 13b resolves packet through linking layer, network layer, transport layer and application layer from the send buffer sense data bag of network controller 13e; When sending data, ICP/IP protocol processor 13b adds header to sent data through opposite process, the packet that character and packing data become to send, delivers to the transmission buffer zone of network controller 13e, starts to send to order and finishes transmission.Web page server 13c is responsible for the management of webpage and the text of webpage needs is saved on the save set, and save set is meant FLASH storer etc.
Here sensor assembly 12 and communication module 13 shared microprocessors 60.Microprocessor 60 carries out calculation processing (p2) and the data exchange processing between communication module and the sensor assembly and the network communication processing (p3) of data.
Fig. 3 is the hardware circuit of the sensor assembly of electric energy meter 100.As shown in Figure 3, the sensor assembly of electric energy meter 100 mainly contains following a few part composition: switch power module circuit 16, memory module circuit 15, CPU modular circuit 14, Network Interface Module circuit 17 and signal sampling processing module circuit 18.
Here switch power module circuit 16 and CPU modular circuit 14 and the total tie point of signal sampling processing module circuit 18 utilizations come ground connection.Also having the amplifier circuit of signal sampling processing module circuit 18 is differential amplifier circuit.
In addition, switch power module circuit 16 and CPU modular circuit 14 and signal sampling processing module circuit 18 have used power supply and the ground that power supply that the mimic channel that do not influence mutually uses and ground and digital circuit are used.The analog electrical slightly power supply of usefulness has used total tie point to be connected with the power supply that digital circuit is used.And the ground that mimic channel is used has also used total tie point to be connected with the ground that digital circuit is used.In other words, used a ground tie point.Thereby strengthened the independence of mimic channel and digital circuit, also can reduce on the appliance circuit that unnecessary mess code enters into other parts, realized the stability of signal processing circuit.
In addition, be located at signal sampling handling part input end, the circuit that is used for amplification input signal is a differential amplifier circuit.
The ac current signal of 2,6,7 li 0 ~ 30mA that obtain of foreign current sensor as shown in Figure 2 with and press signal by the obtained light current that exchanges of built-in transformer, through converting the weak electric signal of 0V ~ 5V behind the analog signal conditioner 12d to.Commutation circuit 18c is according to the order of microprocessor 60, and the I/O mouth of CPU modular circuit 14 is controlled between circuit 118a or the circuit 218b switches,
Shown in Fig. 4 (a) be, by the waveform of current convertor device CT 2,6,7 resulting current signals with by transformer PT3, the waveform of 4 resulting voltage signals.Among the figure, 19 expression voltage signals, 20 expression current signals.Shown in Fig. 4 (b) is that by the calculation amplifying circuit, shaping pulse is the pulse signal 21 of generation afterwards voltage signal.This pulse signal is sent to the external interrupt pin of microprocessor, interrupts in the negative edge microprocessor generation of signal level, activates sampling processing process (P1) in interrupt routine.After the interruption reset condition initialization, the calculation of carrying out data by microprocessor 60 is handled (P2) and communication module and sensor assembly and is carried out exchanges data and carry out network communication and handle (P3).
Among Fig. 4, the synchronization pulse 21 that is produced by voltage signal 19 is as the signal source of microprocessor 60 counters.After reset initialization, 3 process P1 of IP electric energy meter, P2, P3 are in the standby ready state.By the time first cycle of voltage signal arrives, just t
0Constantly, microprocessor external interrupt pin generation level saltus step and produce interruption.In interrupt routine, put sampling and be masked as 1, activation voltage current signal sampling process (P1).At first cycle of voltage signal 19, voltage signal 19 and the current signal 20 of 60 couples of passage 118a of microprocessor are sampled, and the numerical value of sampling is saved in the RAM storer.When being in executing state, process P2 and P3 are in ready state in sampling process (P1).At t
1Constantly, saltus step takes place and produces interruption in the level of microprocessor 60 external interrupt pins once more, and the sampling sign becomes 0 in interrupt routine, and it is 1 that the electrical quantity calculation flag is set simultaneously, and process P2 is in executing state, and process P1, P3 are in ready state.Microprocessor 60 is according to eight electrical parameter values such as the voltage signal of sampling, current signal instantaneous value calculating voltage effective value, current effective values.After electrical quantity calculated and finishes, the accumulated value of preserving net horsepower, useless power was in the internal data Flash storer of microprocessor.
At t
2Constantly, the electrical quantity calculation flag is set at 0 o'clock, in N-2 voltage cycle subsequently, voltage and current signal sampling process (P1) and electrical quantity calculate and preservation process (P2) all is in ready state, network communication process (P3) is in executing state, and microprocessor 60 responses are carried out communication from the request of client and handled.Moment t
2Be a uncertain value, according to the size of voltage signal frequency and calculated amount, the time that electrical quantity calculates is within 1 or 2 cycles.After the network communication of N-2 cycle finished, microprocessor 60 switched to the another one passage and does same processing.The circulation that goes round and begins again like this adopts method that a microprocessor was cut apart by the time to realize sampling (P1), computation of electrical and preservation (P2), three processes of network communication (P3) of voltage and current signal.
Fig. 5 represents voltage and current signal sampling (P1) process.At this, 19 ' is voltage signal, and 20 ' is current signal.After externally the mid-sampling of interrupt routine is masked as 1, start the timer of microprocessor, timing is Δ T, and pattern is continuous loading pattern.Produce timer when timing arrives and interrupt, in timer interrupt program, start the DMA sampling of microprocessor, voltage signal and current signal are carried out continuous sampling.Sampling finishes the back and preserves the storage space of sampled result to appointment.Wait for that then next timer interrupts, wait until to start next time when interrupting taking place by next timer DMA samples, till the sampling sign is eliminated.At this, come the modification method of the sampled leakage of account for voltage signal and current signal with the correction of current signal sampled leakage.
Be example with voltage below, the modification method of the sampling error of compensation voltage signal and current signal is described.
Usually, the actual value u of continuous voltage signal calculates according to following calculating formula (1):
After the discretize, the effective value of voltage (hits in 2 π cycles is N) is to calculate according to following calculating formula (2):
In formula (2), the signal period of voltage signal u is set at and evenly is divided into N sampling period as shown in Figure 6.But in the actual environment for use, input signal is not necessarily very even, can produce deviation, also has the signal processing circuit instability to cause the signal period that small variation is arranged, so be difficult to guarantee that signal period T is divided into N sampling period.Thereby calculate with calculating formula (2), error takes place easily.Sampling error just shown in Figure 7.The pulse signal of Fig. 7 (a) expression voltage signal.Fig. 7 (b) lining 19a represents voltage signal, and 19b represents current signal.Fig. 7 (c) bend partly is the figure that the dotted portion of Fig. 7 (b) is amplified.The signal period of voltage and current is not sampled period T S and divides equally in Fig. 7 (b).That is to say, shorter because of the interval of t1 and t2 than sampling period TS, sampling error can take place.The oblique line part A of Fig. 7 (c) and B respectively represent the sampled leakage of voltage signal and the sampling error of current signal.
At this, come the virtual value of calculated current signal by calculating formula (3), can correcting current signals sampling error, guarantee the precision of sampling with this.
Also have, as can be seen from Figure 7, i
0=i
NWhen the interval between t2 and t1 is small, can suppose
Thereby the calculating formula (4) below calculating formula (3) obtains.
In formula (4), (t
2-t
1) be unknown number, this unknown number can utilize T, Ts and N to calculate.As another kind of method, in order to calculate the interval between t2 and the t1, (t2) reads the calculated value of 2 system counters in the time of can externally interrupting taking place.Increase according to the calculated value of 2 system counters calculates the time interval between t2 and the t1.In theory, can obtain the more correct value of current signal according to above-mentioned correction.
The following describes power monitor system.Power monitor system 200 shown in Figure 8 comprises electric energy meter 100 and user's monitoring arrangement 80.Sensor assembly 12 and communication module 13 user's monitoring arrangements 80 that electric energy meter 100 has in Fig. 2 have the electric energy meter administration module, be used to show and store the data that receive from communication module 13 by network, and electric energy meter is managed.
Fig. 9 represents is the exchange process of the data between the web page server 13c of user's user's monitoring arrangement 80 and electric energy meter 100.At first send the request of communication beginning from user's monitoring arrangement 80 to the web page server 13c of electric energy meter 100, web page server 13c obtains communicating by letter after the request of beginning, answers for user's monitoring arrangement 80 at once.Send the request that data transmit again from user's monitoring arrangement 80 afterwards, web page server 13c obtains after the request of data transmission, transmits data and download for user's monitoring arrangement 80 at once.The interface of 80 li appearance of user's monitoring arrangement afterwards such as Figure 10.
In the top of webpage three labels: read circuit types and PT/CT and lead 22, read circuit types and PT/CT leads 23, useful work/idle work 24 resets about the electric energy meter configuration.
When the user clicked " read circuit types and PT/CT leads " 22 labels at user's monitoring arrangement 80 interfaces, 25 showed that the circuit types and the PT/CT of two passages of electric energy meters lead in the label viewing area.Click " circuit types is set and PT/CT leads " 23 labels interfaces that label viewing area 25 shows as shown in figure 10 in Figure 11, circuit types and PT/CT that two passages of electric energy meter can be set respectively lead, and can select between single-phase-two-wire, single-phase three-wire and phase three-wire three circuit types by drop-down menu.Click " resetting of accumulative total useful work/accumulative total idle work " 24 labels 25 demonstration interfaces as shown in figure 10, label viewing area in Figure 12, can carry out zero clearing for the aggregate-value of two passages by different combinations.Channel selecting 27 is selected between two passages of electric energy meter, and when selecting certain passage, currency 29, aggregate-value 30 are shown as the electrical parameter values of this passage.In order to improve the performance of electric energy meter, the exchanges data between above client and the electric energy meter all is to pass through udp protocol.Client each second is come more data presented on the new web page by udp protocol to the requirement that electric energy meter 100 requests one secondary data transmits.
The electric energy meter administration module can adopt " data collection software " (as Figure 13) and " IP configuration and webpage are uploaded software " (as Figure 14 and Figure 15).
" data collection software " is used for collecting for a long time the electric energy meter image data on the LAN (Local Area Network).This software can be collected the electricity consumption situation of consumer in the time period that is provided with, and data are saved as the file of CSV (electrical form) form, is convenient to the maintenance of user to equipment.Interface as shown in figure 13, this software can be collected the data of 8 electric energy meters on the LAN (Local Area Network) simultaneously, the IP address of 32 input electric energy meters in input field, IP address.The time interval of zero-time, termination time and data of every collection of collection can be set in time setting area 33.Can choose at random the catalogue of preserving file, the data of each electric energy meter save as a file, the combination of the IP address of file zero-time by name and electric energy meter.Whenever will collect data, client sends a UDP and wraps the electric energy meter request msg, and electric energy meter sends to client to up-to-date electrical parameter values by udp protocol.
As shown in figure 14, " IP configuration and webpage upload software " IP address of being used for disposing any appointment electric energy meter 100 on the LAN (Local Area Network).Client utilizes IP address and electric energy meter 100 to communicate by setting the IP address of electric energy meter 100.
Obtain data as the electric energy meter 100 of communication ends, preserve with the TEDS form based on the TEDS of electronic databank (sensor electrical subdata base) of the sensor assembly 12 of IEEE1451 standard.The TEDS formatted data that electric energy meter 100 is received, the user can read on user's monitoring arrangement 80 by network communication.
For example, in the web page server 13c of electric energy meter 100,, generate the data of html format from the data of TEDS form, and, can on user's monitoring arrangement 80, read by http communication.At this moment, the renewal of the data of every generation TEDS form, the data of the also more newly-generated new html format of electric energy meter 100, and be stored on the memory module 15.Web page server 13c by 80 pairs of electric energy meters 100 of user's monitoring arrangement sends the reading request, to upgrade the data in user's monitoring arrangement 80.
In addition, can also pass through the JAVATM interface, be used for representing in real time the data of TEDS form of the web page server 13c of electric energy meter 100.User's monitoring arrangement 80 is downloaded described interface get off and is carried out, and can be in real time obtains data and can read from the web page server 13c of electric energy meter 100 by user's monitoring arrangement 80 with this.
The present invention compared with prior art has following effect:
The electric energy meter that the 1st aspect of the present invention is proposed can carry out the sampling of voltage, electric current in the sensor assembly and calculation process and handles with the exchanges data and the network communication of sensor assembly in communication module by a microprocessor.Therefore, can reduce the whole cost of multifunctional electric energy meter.
The electric energy meter that the 2nd aspect of the present invention is proposed, can realize the processing of P1, P2, P3 by microprocessor: wherein the sampling processing P1 of voltage and current value, operation of data are handled the exchanges data and the network communication processing P3 of P2, communication module and sensor assembly, are that the interrupt routine by separately activates.
The electric energy meter that the 3rd aspect of the present invention is proposed is not only measured the performance number of an electric equipment, can improve the service efficiency of electric energy meter to the independently voltage of a plurality of electric equipments and electric current execution sampling separately simultaneously.
The electric energy meter that the 4th aspect of the present invention is proposed, be in a plurality of electric equipments, when the electric equipment of appointment is carried out the sampling processing P1 of voltage and current value, at first carry out the switching of electric equipment by handover module, sampling finishes the electric equipment that calculation process P2 or network communication processing P3 are carried out in the back.
The electric energy meter that the 5th aspect of the present invention is proposed, the time interval according to power cycle adjustment sampling processing, calculate optimal time interval, and carry out sampling processing at interval according to this, the error of sampling can be reduced to bottom line.
The electric energy meter that the 6th aspect of the present invention is proposed is, according to power cycle and sampling interval, current value, magnitude of voltage or performance number revised, and the error of sampled value can be reduced to bottom line, and can improve the degree of accuracy of multifunctional electric energy meter.
The electric energy meter that the 7th aspect of the present invention is proposed is according to the final measured value of the curtage of being sampled, current value, magnitude of voltage or performance number to be revised.Therefore, best modified value can be obtained, and the degree of accuracy of multifunctional electric energy meter can be improved.
The electric energy meter that the 8th aspect of the present invention is proposed makes power circuit, mimic channel and digital circuit have common tie point, can suppress the generation of error between the tie point, can improve the degree of accuracy of multifunctional electric energy meter with this.
The electric energy meter that the 9th aspect of the present invention is proposed is that the amplifier circuit of mimic channel is a differential amplifier circuit.
The electric energy meter that the 10th aspect of the present invention is proposed is that further configuration Web server can transmit the power parameter of being measured by this electric energy meter by network on multifunctional electric energy meter.
The power monitor system that the 11st to the 15th aspect of the present invention is proposed, comprise electric energy meter and user's monitoring arrangement with sensor assembly and communication module, wherein, user's monitoring arrangement also has the electric energy meter administration module, be used to show and store the data that receive from described communication module by network, and electric energy meter is managed.Therefore, can pass through network, any one function that the 1st to the 10th aspect of the present invention is proposed manages.
Claims (8)
1. electric energy meter is characterized in that comprising:
Sensor assembly is used for the voltage and current signal of electrical equipment is carried out sampling processing, also utilizes the measured value of being sampled to carry out the calculation process of current value, magnitude of voltage, performance number;
Communication module is used for carrying out exchanges data with described sensor assembly and carrying out network communication by the ICP/IP protocol stack and handle; Wherein,
The sampling of voltage that described sensor assembly carried out, electric current and calculation process and described communication module the carry out processing with exchanges data described sensor assembly and network communication be to control by a microprocessor,
Described microprocessor is regulated the time interval of voltage and current signal being carried out sampling processing according to power cycle, and described microprocessor is revised current value, magnitude of voltage, performance number according to power cycle and sampling processing interval; Described microprocessor is revised current value, magnitude of voltage, performance number according to the final measured value of the curtage of being sampled.
2. electric energy meter as claimed in claim 1, it is characterized in that: described microprocessor, when execution was carried out sampling processing process P1 to described voltage and current, the exchanges data of described calculation process process P2 and described communication module and sensor assembly and network communication treatment progress P3 were in ready state; When carrying out described calculation process process P2, the exchanges data and the network communication treatment progress P3 that described voltage and current are carried out sampling processing process P1 and described communication module and sensor assembly are in ready state; When the exchanges data of carrying out described communication module and sensor assembly and network communication treatment progress P3, described voltage and current is carried out sampling processing process P1 and described calculation process process P2 is in ready state.
3. electric energy meter as claimed in claim 2 is characterized in that: described sensor assembly can carry out sampling processing to the voltage and current signal of separate a plurality of electrical equipments;
Described microprocessor carries out time sharing sampling by the mistiming and handles P1, P1 ', P1 ", comprise handover module in the described sensor assembly, be used to switch the electrical equipment that need carry out the voltage and current signal sampling processing; Described microprocessor switched the electrical equipment that need carry out the voltage and current signal sampling processing before exchanges data of carrying out described calculation process process P2 or described communication module and sensor assembly and network communication treatment progress P3.
4. as claim 1 or 2 or 3 described electric energy meters, it is characterized in that: described microprocessor circuit plate comprises power circuit, mimic channel and digital circuit, and described power circuit and mimic channel and digital circuit have common tie point; Described mimic channel, its amplifier circuit that comprises is a differential amplifier circuit.
5. electric energy meter as claimed in claim 1 is characterized in that: described communication module also has Web server, can upgrade the power parameter of measuring on described Web server webpage.
6. power monitor system that comprises the described electric energy meter of claim 1 is characterized in that comprising: have electric energy meter and user's monitoring arrangement of sensor assembly and communication module, wherein,
Described user's monitoring arrangement has the electric energy meter administration module, is used to show and store the data that receive from described communication module by network, and electric energy meter is managed.
7. power monitor system as claimed in claim 6, it is characterized in that: described electric energy meter administration module, can on described user's monitoring arrangement, carry out for a long time, and collect from the data of the Web server transmission of described electric energy meter communication module, have memory module in described user's monitoring arrangement, and can store described measured value and measure current time on memory module.
8. power monitor system as claimed in claim 7, it is characterized in that: described memory module, the long-time running situation of record electric energy meter and be sent to the electrical quantity of electric energy meter administration module, the content of showing memory simultaneously by the mode of form and figure from electric energy meter; Described electric energy meter administration module can be set on described user's monitoring arrangement and collect the data start time, collects the data stand-by time and collect data time at interval.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100273964A CN100454025C (en) | 2006-06-08 | 2006-06-08 | Electric energy meter and power monitor system |
| JP2007153041A JP2007327961A (en) | 2006-06-08 | 2007-06-08 | Electric power meter and electric power surveillance system |
| JP2011247739A JP2012032409A (en) | 2006-06-08 | 2011-11-11 | Wattmeter and power monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100273964A CN100454025C (en) | 2006-06-08 | 2006-06-08 | Electric energy meter and power monitor system |
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| Publication Number | Publication Date |
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| CN1858600A CN1858600A (en) | 2006-11-08 |
| CN100454025C true CN100454025C (en) | 2009-01-21 |
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| CNB2006100273964A Expired - Fee Related CN100454025C (en) | 2006-06-08 | 2006-06-08 | Electric energy meter and power monitor system |
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| JP (2) | JP2007327961A (en) |
| CN (1) | CN100454025C (en) |
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Also Published As
| Publication number | Publication date |
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| CN1858600A (en) | 2006-11-08 |
| JP2007327961A (en) | 2007-12-20 |
| JP2012032409A (en) | 2012-02-16 |
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