CN202305628U - Device capable of reforming common electric energy meter into intelligent electric energy meter - Google Patents
Device capable of reforming common electric energy meter into intelligent electric energy meter Download PDFInfo
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- CN202305628U CN202305628U CN2011202357284U CN201120235728U CN202305628U CN 202305628 U CN202305628 U CN 202305628U CN 2011202357284 U CN2011202357284 U CN 2011202357284U CN 201120235728 U CN201120235728 U CN 201120235728U CN 202305628 U CN202305628 U CN 202305628U
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Abstract
The utility model relates to a device capable of reforming a common electric energy meter into an intelligent electric energy meter. The device includes a probe and an acquisition terminal. The device is characterized in that the probe is fixed on and faces to an electric energy window of the electric energy meter. The probe inducts an electric energy image, and is connected with the acquisition terminal; the acquisition terminal reads the electric energy image from the probe, judges the power direction, calculates the electric energy increment, accumulates the electric energy time forward and reverse background values, the sharing background value, and the tiered background value, displays the prepayment, controls the load, communicates with an external digital device, and completes the functions of the intelligent electric energy meter. Through the implementation of the device, the common electric energy meter can be easily reformed to have the functions of the intelligent electric energy meter, such as the bidirection function, the time sharing function, the tiered pricing function, the charging function, the prepayment control function, and the remote control function. The common electric energy meter can output an active power, a voltage U, and remote signaling signals of gate inhibition and switch state. The performance of the common electric energy meter is similar to the performance of the intelligent electric energy meter. Besides, the investment is small, the reformation engineering quantity is small, the metering wiring mistake can be avoided, and the investment can be greatly reduced.
Description
Technical field
The utility model relates to the electrical energy metering technology, and especially general electric energy meter is transformed into the device of intelligent electric meter.
Background technology
Intelligent grid requires electric energy meter to possess the function of intelligent electric meter, promptly two-way, timesharing, ladder metering and pre-payment control and long-range control etc.But on-the-spot mounted electric energy meter is mechanical power energy meter and a small amount of pulsed electric energy meter in a large number.If stem-winder or pulse meter are replaced with intelligent electric meter, not only investment is big, causes very big manpower and materials waste, disagree with building a conservation-minded society, and the quantities of changing table is big, occurs metering wiring error easily.
Therefore the technical issues that need to address are: do not change electric energy meter and just can transform mechanical electric energy meter or pulse electric energy table as intelligent electric meter.
The utility model content
For solving the problems of the technologies described above; The utility model provides a kind of corresponding a kind of device that common electric energy meter is transformed into intelligent electric meter; Comprise: probe and acquisition terminal is characterized in that: said probe connects the electric energy image that said acquisition terminal, electric energy window fixing and that aim at said electric energy meter are used for the induction electric energy table; At the bottom of said acquisition terminal reads said electric energy image, judges power direction and calculates the electric energy increment, is accumulated as the forward and reverse table of electric flux from said probe, at the bottom of the timesharing table and at the bottom of the ladder table, demonstration and pre-payment control load, intercom mutually with external digital equipment.Accomplish the function of intelligent electric meter.
In an embodiment of apparatus of the present invention; A kind of device that common electric energy meter is transformed into intelligent electric meter; Comprise: probe and acquisition terminal, said probe connect the electric energy image that said acquisition terminal, electric energy window fixing and that aim at said electric energy meter are used for the induction electric energy table; At the bottom of said acquisition terminal reads said electric energy image, judges power direction and calculates the electric energy increment, is accumulated as the forward and reverse table of electric flux from said probe, at the bottom of the timesharing table and at the bottom of the ladder table, demonstration and pre-payment control load, intercom mutually with external digital equipment.
Preferably, said electric energy meter is mechanical electric energy meter, the machine carousel that said electric energy image is said mechanical electric energy meter turn to image, said probe comprises: luminotron, it is to machine carousel emission light of said mechanical electric energy meter; The direction that is rotated in the forward along said machine carousel is disposed in order first sensitizing tube and second sensitizing tube, receives said emission light respectively by the reflected light of said machine carousel reflection, and exports pulse M1 and pulse M2 respectively according to catoptrical power; Said acquisition terminal is leading or hysteresis pulse M2 judgement power direction and calculating electric energy increment according to pulse M1.
Preferably, said probe comprises the imageing sensor and the illuminating lamp that is used for light source that is used for induction table ins and outs wheel image; Said acquisition terminal comprises the image recognition device, is used for Identification Lists ins and outs wheel image and is table truth of a matter certificate, and judge power direction and calculate the electric energy increment than the size of showing the truth of a matter certificate last time according to current table truth of a matter certificate.
Preferably, probe also comprises shell, glass plate and wiring board; Said luminotron is by the power supply V+ power supply of acquisition terminal output; The grounded emitter of said first sensitizing tube, collector output pulse M1; The grounded emitter of said second sensitizing tube, collector output pulse M2; Wiring board is used for fixing luminotron, first sensitizing tube and second sensitizing tube, the encapsulation that shell, glass plate are used to pop one's head in; The machine carousel of alignment probe electric energy meter is also directly bonded on the window glass of said electric energy meter.
Preferably, said acquisition terminal has an interface circuit and single-chip microcomputer MPU, and interface circuit comprises two shaping circuits and resistance, and two shaping circuits are used for pulse M1 and M2 from probe are carried out shaping, remove shake, output to said single-chip microcomputer MPU then; Resistance is used for converting power Vcc to output to probe behind the continuous current V+.
Preferably, said interface circuit also comprises resistance and VMOS pipe, and the O1 of said MPU output connects the grid of VMOS pipe behind resistance, and grounded drain, the source electrode of VMOS pipe meet V+; After powering on, O1 output 0, VMOS manages not conducting, and V+ has electricity, and the luminotron of probe is luminous, said single-chip microcomputer MPU received pulse M1 and M2; After after a while, MPU can predict the interval T of pulse, and afterwards, after MPU received M1 and M2, input and the output O1 that turn-offs paired pulses was 1, the conducting of VMOS pipe, V+ do not have electricity, and the luminotron of probe stops luminous; Delay time one period less than T, MPU output O1 is 0, turn-offs the pulse input that VMOS manages, the luminotron of probe is luminous again, open MPU again, so continues.
Preferably, probe also comprises light conductor, bus driving circuits, circuit board and housing; Wiring board is used for fixing imageing sensor, illuminating lamp and realization wiring, the encapsulation that shell is used to pop one's head in; The table ins and outs wheel of alignment probe electric energy meter is bonded on the front glass panel of stem-winder with the mode of quick bonding; Light conductor is with the luminous table ins and outs wheel that is directed to of illuminating lamp; When having electricity, V+ do not illuminate table ins and outs wheel by natural light; The image of table ins and outs wheel is mapped on the imageing sensor through light conductor, and every width of cloth image that imageing sensor will be experienced becomes a frame image data, process bus driving circuits and data bus DB output image data to acquisition terminal; The work of imageing sensor is controlled by acquisition terminal.
Preferably, said acquisition terminal comprises interface circuit and single-chip microcomputer MPU, and this interface circuit comprises bus driving circuits, image recognition device and resistance; Bus driving circuits receive through data bus DB input from the view data of probe and output to the image recognition device, the image recognition device converts view data into the table truth of a matter according to W
S, output W
STo single-chip microcomputer MPU; Power Vcc becomes voltage transitions the V+ that outputs to probe behind the continuous current through resistance.
Preferably, acquisition terminal comprises interface circuit, single-chip microcomputer MPU, crystal oscillator, resets and watchdog circuit, clock circuit, switching value input circuit DI, switching value output circuit DO, man-machine interface circuit, telecommunication circuit and power supply; Probe connects the single-chip microcomputer MPU of acquisition terminal through interface circuit; The oscillator signal that crystal oscillator produces provides frequency of operation for single-chip microcomputer MPU; Reset and be input to the operation of single-chip microcomputer MPU generation electrification reset and supervision MPU with watchdog circuit; Clock circuit is that real-time clock RTC connection MPU provides pulse per second (PPS) and Time of Day data for it; The status signal of switching value input circuit DI input gate inhibition signal, on-load switch, output to single-chip microcomputer MPU; Switching value signal, the output control on-load switch of switching value output circuit DO input single-chip microcomputer MPU output are by the electricity consumption power supply of on-load switch control electricity consumer; The man-machine interface circuit receives the data of single-chip microcomputer MPU and shows or receive artificial input command through button with liquid crystal or charactron and outputs to MPU; Telecommunication circuit is used for the exchanges data of single-chip microcomputer MPU and external digital equipment; Power supply provides power supply for the acquisition terminal internal circuit.
Preferably, acquisition terminal also comprises analog input circuit.
The utility model also comprises a kind of device that N common electric energy meter is transformed into intelligent electric meter; Comprise: N probe and an acquisition terminal; Wherein, said N probe fixing respectively and aim at a said N electric energy meter electric energy window, induction electric energy image, connect said acquisition terminal; At the bottom of said acquisition terminal reads said N electric energy image, judges N power direction and N electric energy increment of calculating, is accumulated as N the forward and reverse table of electric flux from said N probe respectively through N interface circuit, at the bottom of the N timesharing table and also demonstration at the bottom of N ladder table; Through N on-load switch of N switching value output circuit control, reach pre-payment control and Long-distance Control; Thereby, the function of N intelligent electric meter of completion.
The scheme of the utility model is transformed into intelligent electric meter to existing electric energy meter with it, can accomplish the function and the performance of all intelligent electric meters such as two-way, timesharing, ladder metering of electric flux.
Description of drawings
Fig. 1 is the synoptic diagram of the inventive method and device working condition.
Fig. 2 is first embodiment of probe, wherein
The front elevation that Fig. 2 A installs for probe first embodiment,
Fig. 2 B is the vertical view that probe first embodiment installs,
Fig. 2 C is the probe first embodiment electrical schematic diagram,
Fig. 2 D is the pulse waveform of probe first embodiment this probe output when flowing through forward power.
Fig. 3 is a kind of interface circuit of the acquisition terminal of corresponding probe first embodiment.
Fig. 4 is second embodiment of probe, wherein,
The front elevation that Fig. 4 A installs for probe second embodiment,
Fig. 4 B is the vertical view that probe second embodiment installs,
Fig. 4 C is the probe second embodiment electrical schematic diagram.
Fig. 5 is a kind of interface circuit of the acquisition terminal of corresponding probe second embodiment.
Fig. 6 is the circuit block diagram of acquisition terminal.
Fig. 7 is the host computer procedure chart of single-chip microcomputer MPU in the acquisition terminal.
Fig. 8 is the embodiment of four shared acquisition terminals of electric energy meter.
Embodiment
Fig. 1 is the synoptic diagram of the inventive method and device working condition.In Fig. 1, transformation of the present invention is to liking electric energy meter 1, and digital device 3 is existing devices, the present invention includes acquisition terminal 2 and probe 4.Its working condition is such: the electric energy image of the 4 perception electric energy meters 1 of popping one's head in, output signal be to acquisition terminal 2, and popping one's head in 4 provides power supply by acquisition terminal 2; The signal of the representative electric flux of acquisition terminal 2 receiving transducers 4 output, judge forward and reverse, be converted into the electric energy increment, be accumulated as the forward and reverse table of electric flux at the bottom of, at the bottom of the timesharing table and at the bottom of the ladder table, demonstration and pre-payment control load; Intercom mutually with digital device 3, accomplish the function of intelligent electric meter.
Fig. 2 is first embodiment of probe, and among Fig. 2 A to 2D, probe 4 comprises luminotron 41, first sensitizing tube 42 and second sensitizing tube 43.Among Fig. 2 B, also show shell 44, glass plate 45 and wiring board 46.Luminotron 41 is by the power supply power supply V+ (Fig. 2 C) of acquisition terminal 2 outputs.V+ has electricity back luminotron 41 luminous; The grounded emitter of first sensitizing tube 42, collector output pulse M1; The grounded emitter of second sensitizing tube 43, collector output pulse M2.Among Fig. 2 B, wiring board 46 is used for fixing luminotron 41, first sensitizing tube 42 and second sensitizing tube 43.4 the encapsulation that is used to pop one's head in of shell 44, glass plate 45; The machine carousel 11 that probe 4 is done on the as a whole glass 12 that is directly bonded to said electric energy meter, aimed at electric energy meter 1, and along rotating disk 11 be rotated in the forward direction first sensitizing tube 42 before this, be second sensitizing tube 43 again.When electric energy meter passes through forward power, Fig. 2 D, pulse M1 is ahead of pulse M2; Otherwise, when electric energy meter during through negative sense power pulse M1 lag behind pulse M2.
Fig. 3 is a kind of interface circuit of the acquisition terminal of corresponding probe first embodiment.Among Fig. 3, interface circuit 21 comprises two shaping circuits 211 and 212, resistance 214, and two shaping circuits 211 that are input to acquisition terminal 2 from the pulse M1 and the M2 of probe output are with 212, and shaping, removal output to single-chip microcomputer MPU 22 after shaking; Two shaping circuits 211 and 212 can have numerous embodiments, are routine techniquess, omit here.Power Vcc becomes voltage transitions the V+ that outputs to probe behind the continuous current through resistance 214.
In order to prolong the life-span of luminotron in the probe, interface circuit 21 also comprises resistance 215 and VMOS pipe 216, and the O1 of single-chip microcomputer MPU 22 outputs connects the grid of VMOS pipe 216 behind resistance 215, and grounded drain, the source electrode of VMOS pipe 216 meet V+; After powering on, O1 output 0, VMOS manages 216 not conductings, and V+ has the luminotron of electricity, probe luminous, MPU received pulse M1 and M2; After after a while, the calculation process of single-chip microcomputer MPU can be predicted the interval T of pulse, and afterwards, after MPU received M1 and M2, the luminotron that input and the output O1 that turn-offs paired pulses is 1, VMOS manages 216 conductings, V+ does not have electricity, probe stopped luminous; Delay time one period less than T, the pulse input that the luminotron that single-chip microcomputer MPU output O1 is 0, turn-off VMOS pipe 216, probe is luminous again, open single-chip microcomputer MPU 22 more so continues.Luminotron is intermittently luminous, can prolong the probe life-span.
In the embodiment of Fig. 2 and Fig. 3, electric pulse M1 and M2 that acquisition terminal 2 receives first sensitizing tube 42 and 43 outputs of second sensitizing tube judge outbound course sign F according to the sequential of M1 and M2, if M1 is ahead of M2, then F=1 is a forward; Otherwise M1 lags behind M2, and then F=-1 is reverse; Perceive an electric pulse (M1 and a M2), the corresponding electric energy increment of electric pulse is a Δ,
Formula 1: Δ=1/C kWh,
Wherein, C is the constant of electric energy meter 1, and unit is commentaries on classics/kWh;
It is T to the time interval when prepulse that acquisition terminal is measured a pulse, and unit is S.
Fig. 4 is second embodiment of probe, and wherein, Fig. 4 A to 4C is an imageing sensor probe synoptic diagram, and probe 4 comprises light conductor 47, illuminating lamp 4A, bus driving circuits 49, circuit board 46 and housing 44.Circuit board 46 is used for fixing imageing sensor 48 with illuminating lamp 4A and be used to realize wiring, shell 44 4 the encapsulation that is used to pop one's head in; Probe 4 can adopt mode such as fast binder to be bonded on the front glass panel 12 of stem-winder 1, aim at the table ins and outs wheel 13 of electric energy meter 1, image that can clear acquisition tables ins and outs wheel.Light conductor 47 is with the luminous table ins and outs wheel that is directed to of illuminating lamp 4A.In order to economize on electricity, V+ receives the control of acquisition terminal, night V+ charged, illuminating lamp 4A is luminous, illuminate table ins and outs wheel 13 through light conductor 47; V+ did not have electricity, illuminated table ins and outs wheel 13 by natural light daytime.The image of table ins and outs wheel 13 is mapped on the imageing sensor 48 through light conductor 47, and each image that imageing sensor 48 will be experienced becomes a frame image data, process bus driving circuits 49 output image datas to data bus DB.The work of imageing sensor 48 is controlled by acquisition terminal 2, also can receive the control signal of sending here through data bus DB, bus driving circuits 49, receives that whenever a control signal starts working, and experiences image, output one frame image data, has a rest afterwards.
Fig. 5 is a kind of interface circuit of the corresponding probe of acquisition terminal second embodiment; Interface circuit 21 comprises bus driving circuits 217, image recognition device 218 and resistance 214; The view data of probe 4 outputs is input to the bus driving circuits 217 of acquisition terminal 2 through data bus DB; Arrive image recognition device 218 again, convert view data into the table truth of a matter according to W
S, W
SOutput to single-chip microcomputer MPU 22; Power Vcc becomes voltage transitions the V+ that outputs to probe 4 behind the continuous current through resistance 214; For power saving, single-chip microcomputer MPU 22 output O1 connect the grid of VMOS pipe 216 behind resistance 215, and grounded drain, the source electrode of VMOS pipe 216 meet V+; Night, the O1 of MPU output was 0, and VMOS manages 216 not conductings, and the illuminating lamp of probe 4 is luminous; The O1 of single-chip microcomputer MPU 22 output on daytime is 1, turn-off the illuminating lamp of probe 4; MPU 22 whenever receives and once shows the truth of a matter according to W
SAfter once calculate, the current table truth of a matter is according to W
SkWith the table truth of a matter of last time according to W
Sk-1The difference of subtracting each other between moment of the moment and last time table truth of a matter certificate of the electric flux Δ W that obtains between twice conversion, current table truth of a matter certificate is time interval T, and unit is S,
Formula 2: Δ W=W
Sk-W
Sk-1:
If Δ W >=0 then be forward F=1, otherwise Δ W＜0 is inverted-F=-1;
Formula 3: Δ=| Δ W|.
Fig. 6 is the circuit block diagram of acquisition terminal 2.In Fig. 6, acquisition terminal 2 comprises with probe 4 interface circuit 21, single-chip microcomputer MPU 22, crystal oscillator 23, resets and watchdog circuit 24, clock circuit 25, telecommunication circuit 27, switching value input circuit 29, switching value output circuit 2A and power supply 28; Probe 4 connects single-chip microcomputer MPU 22 through interface circuit 21 (seeing Fig. 3 or Fig. 5); The oscillator signal that crystal oscillator 23 produces is input to single-chip microcomputer MPU provides frequency of operation for it; Resetting is input to the operation of MPU generation electrification reset and supervision MPU with watchdog circuit 24, produce reset signal in case the MPU program is offscale and force MPU to reset again; Clock circuit 25 is that real-time clock RTC connection single-chip microcomputer MPU 22 provides pulse per second (PPS) and Time of Day data for MPU; Telecommunication circuit 27 receive MPU output data, output to external digital equipment 3, or receive 3 inputs of external digital equipment data, output to single-chip microcomputer MPU 22, carry out exchanges data; The gate inhibition's signal of switching value input circuit 29 input batch meters and the status signal of on-load switch, output to single-chip microcomputer MPU 22; Switching value output circuit 2A receives switching value signal, the output control on-load switch of single-chip microcomputer MPU output, by the electricity consumption power supply (on-load switch can be built in the acquisition terminal 2, also can hang over the acquisition terminal outside outward) of on-load switch control electricity consumer; Power supply 28 receives civil powers, for acquisition terminal 2 internal circuits power supply is provided after converting low pressure to.
Fig. 6 also comprises man-machine interface circuit 26, shows or receive artificial input command through button with the data of reception single-chip microcomputer MPU22 and with liquid crystal or charactron to output to MPU 22.Consider that the electricity consumer and the worker that checks meter read easily and operate, man-machine interface circuit 26 is forming apparatus separately, and process short-distance wireless such as bluetooth or Zegbee or low pressure carrier wave are communicated by letter with single-chip microcomputer MPU22.Along with the development of intelligent grid, this man-machine interface of exempting from wiring tape communication will become the intelligent subscriber interactive terminal.
Fig. 7 is the host computer procedure chart of single-chip microcomputer MPU in the acquisition terminal 2.At first, W at the bottom of the meritorious summary table of input electric energy increment Delta, current time t, power direction F and current place ladder J and arithmetic
S, W at the bottom of the meritorious summary table of forward
+, reverse W at the bottom of the meritorious summary table
-, W at the bottom of the meritorious timesharing table of forward
+ Tk, reverse W at the bottom of the meritorious timesharing table
-Tk, current place the ladder table at the bottom of W
AJWith residue electricity charge Y
ZInitial value, wherein, Δ by interface routine by formula 1 or formula 3 confirm that t is provided Y the current time by real-time clock RTC
ZPromptly remain the electricity charge, F is a power direction, and J promptly belongs to and ladder year is reset to 1 at the beginning; Computation process begins;
1, according to current time t, rate scale obtains the rate kind k of place period when checking the mark;
2, judge power direction F=1? If power direction is positive F=1, then accumulate W at the bottom of the meritorious summary table of forward
+=W
+W at the bottom of+Δ, the meritorious summary table of arithmetic
S=W
SW at the bottom of+Δ, the meritorious timesharing table of forward
+ Tk=W
+ Tk+ Δ and residue electricity charge Y
Z=Y
Z-Δ * C
+ kOtherwise the rate direction is negative F=-1, then W at the bottom of the reverse meritorious summary table of accumulation
-=W
-W at the bottom of+Δ, the meritorious summary table of arithmetic
S=W
S-Δ, reverse W at the bottom of the meritorious timesharing table
-Tk=W
-Tk+ Δ and residue electricity charge Y
Z=Y
Z+ Δ * C
-k
3, accumulation ladder electric weight satisfies under the condition of F=1, at first, accumulates W at the bottom of the ladder table of ladder J at current place
AJ=W
AJ+ Δ; Secondly, when satisfying W
AJ＞A
GJUnder the condition, calculate Δ=W
AJ-A
GJ, and make W
AJ+1=Δ, W
AJ=A
GJAnd J=J+1, arrive next step; Do not satisfy W
AJ＞A
GJCondition then directly arrives next step;
4, calculate the ladder electricity charge, satisfy under the condition of F=1 cumulative remainder electricity charge Y
Z=Y
Z-Δ * Δ C
+ J
5, computation process finishes also to return, and exports W at the bottom of current place ladder J, the meritorious summary table of arithmetic
S, W at the bottom of the meritorious summary table of forward
+, reverse W at the bottom of the meritorious summary table
-, W at the bottom of the meritorious timesharing table of forward
+ Tk, reverse W at the bottom of the meritorious timesharing table
-Tk, current place the ladder table at the bottom of W
AJWith residue electricity charge Y
Z
W at the bottom of the meritorious summary table of the arithmetic of computation process output
SShould with the data consistent of the table ins and outs of electric energy meter wheel, if initial value equates; The meritorious total electric weight Δ W of the forward of certain section interior accumulation of time
+(be W at the bottom of the initial table of period
+With period Mo table end W
+Poor) should with the meritorious timesharing electric weight of forward with Σ Δ W
+ TkConsistent; In like manner, oppositely meritorious total electric weight Δ W
-Should with reverse meritorious timesharing electric weight with Σ Δ W
-TkConsistent; All ladder metering sum Σ Δ W in certain period
AjShould with the meritorious total electric weight Δ W of forward
+Consistent; Certain section interior residue electricity charge Y of time
ZShould with the meritorious electric weight Δ W of the timesharing copied and accepted in this period
+ TkOr Δ W
-Tk, ladder electric weight Δ W
Aj, should be consistent according to the residue electricity charge that the power use by time shearing rate of correspondence or generating rate, the additional ladder electricity charge are calculated; More than all consistance can be used as the test stone of the probe and the acquisition terminal of this programme.
In above-mentioned 1, k=1,2,3 ..., corresponding different rate kinds;
In above-mentioned 2, C
+ kAnd C
-kBe the electricity consumption rate and generating rate of current period, also can be by signal procedure from external digital equipment 3 as the input of computation process;
The corresponding electricity charge of electric energy increment Delta are:
Formula 4: Δ Y
+=Δ * C
+ k, or Δ Y
-=Δ * C
-k
Calculate residue pre-payment value:
Formula 5: Y
Z=Y
Z-Δ Y
+, work as F=1; Or Y
Z=Y
Z+ Δ Y
-, work as F=-1;
In above-mentioned 3, A
GJBe the ladder electric weight set-point of current place ladder, J=1,2,3 ..., also can be by signal procedure from external digital equipment 3 as the input of calculation procedure;
In above-mentioned 4, Δ C
+ JBe the additional ladder rate of current place ladder, also can be by signal procedure from external digital equipment 3 as the input of calculation procedure;
The additional ladder electricity charge Δ Y that the electric energy increment Delta is corresponding
AjBe:
Formula 6: Δ Y
Aj=Δ * Δ C
+ j
Residue pre-payment value is:
Formula 7: Y
Z=Y
Z-Δ Y
Aj
Work as Y
ZReduce to residue pre-payment warning value Y
GZ, then acquisition terminal 2 sends the arrearage alarm signal through communication to outside digital device 3, and being signaled by external digital equipment 3 continues to pay dues like the SMS notification electricity consumer; Work as Y
ZReduce to residue pre-payment close value, for example 0 o'clock, can certainly set other less than residue pre-payment warning value, then acquisition terminal 2 cuts off on-load switch through the 2A output control signal of switching value output circuit Fig. 6 and stops to supply power to electricity consumer.
Acquisition terminal can also be through the guidance command of communications reception external digital equipment 3 inputs, and control on-load switch disjunction or closure stop or continuing power supply to the user.
In such scheme, acquisition terminal 2 also according to time interval T and electric energy increment Delta, calculate active power of output P,
Formula 8:
Unit is W, if P＞0 is meritorious for forward, otherwise P＜0 is reverse meritorious.
By formula the 6 P stochastic errors obtained maybe be very big, for this reason, P carried out digital low-pass filtering.Wave digital lowpass filter can adopt n rank Butterworth or n rank Chebyshev filter or n rank Kalman filter, n=1,2,3,4.
Fig. 6 also comprises analog input circuit 2B, with input analog voltage signal u, the sampled signal u of output behind A-D converter
kTo MPU 22, by the calculating voltage effective value U of MPU, the voltage effective value U that harmonic wave decomposes the output first-harmonic
1Voltage effective value U with the k subharmonic
k
Active power P, voltage effective value U, first-harmonic U
1With k subharmonic U
kMan-machine interface circuit 26 to Fig. 6 shows, outputs to external digital equipment 3 through telecommunication circuit 27.
A plurality of electric energy meters can a shared acquisition terminal, and Fig. 8 is the embodiment of four shared acquisition terminals of electric energy meter.In Fig. 8, it is individual that interface circuit 21, switching value input circuit 29 and the switching value output circuit 2A of acquisition terminal 2 is increased to N (being 4 among the figure), and other is constant, and then an acquisition terminal 2 can be with N piece electric energy meter through N probe.
Technical scheme of the present invention is not limited to the foregoing description.For those of ordinary skill in the art, all belong to protection scope of the present invention in any change that does not break away from design of the present invention and modification.For example, utilize existing knowledge, be easy to two the pulse M1 and the M2 of probe 4 are modulated to together, like M
1Be positive pulse M
2Be negative pulse, demodulation is reduced into two pulse M1 and M2 again after single line outputs to collector 2.
Through the present invention program's enforcement, common electric energy meter be will have easily and two-way, timesharing, ladder metering, charging, pre-payment control, long-range control will be transformed into, and remote signals such as active power of output P and voltage U and gate inhibition, on off state; Compare with intelligent electric meter, except that few output current I and reactive power Q, other function is consistent, performance is approaching.And electric current I and reactive power Q almost do not have demand for low-voltage circuit, so this modification scheme can satisfy the requirement of intelligent grid to electric energy meter, and, invest little, the improvement project amount is little, wiring error can not occur measuring.And the shared collector of a plurality of electric energy meters can reduce investment significantly.
Claims (11)
1. device that common electric energy meter is transformed into intelligent electric meter; Comprise: probe (4) and acquisition terminal (2) is characterized in that: the electric energy window that said probe (4) connects said acquisition terminal (2), fixes and aim at said electric energy meter is used for the electric energy image of induction electric energy table; At the bottom of said acquisition terminal (2) reads said electric energy image, judges power direction and calculates the electric energy increment, is accumulated as the forward and reverse table of electric flux from said probe (4), at the bottom of the timesharing table and at the bottom of the ladder table, demonstration and pre-payment control load, intercom mutually with external digital equipment (3).
2. the device that common electric energy meter is transformed into intelligent electric meter as claimed in claim 1; Said electric energy meter is mechanical electric energy meter; The machine carousel that said electric energy image is said mechanical electric energy meter turn to image; It is characterized in that: said probe (4) comprising: luminotron (41), and it is to the machine carousel emission light of said mechanical electric energy meter; The direction that is rotated in the forward along said machine carousel is disposed in order first sensitizing tube (42) and second sensitizing tube (43), receives said emission light respectively by the reflected light of said machine carousel reflection, and exports pulse M1 and pulse M2 respectively according to catoptrical power; Said acquisition terminal (2) is leading or hysteresis pulse M2 judgement power direction and calculating electric energy increment according to pulse M1.
3. the device that common electric energy meter is transformed into intelligent electric meter as claimed in claim 1; Said electric energy meter is mechanical electric energy meter or pulse electric energy table; The table ins and outs wheel image that said electric energy image is said electric energy meter is characterized in that: said probe (4) comprises imageing sensor (48) that is used for induction table ins and outs wheel image and the illuminating lamp (4A) that is used for light source; Said acquisition terminal (2) comprises image recognition device (218), is used for Identification Lists ins and outs wheel image and is table truth of a matter certificate, and judge power direction and calculate the electric energy increment than the size of showing the truth of a matter certificate last time according to current table truth of a matter certificate.
4. as claimed in claim 2 common electric energy meter is transformed into the device of intelligent electric meter, it is characterized in that: probe (4) also comprises shell (44), glass plate (45) and wiring board (46); Said luminotron (41) is by the power supply V+ power supply of acquisition terminal (2) output; The grounded emitter of said first sensitizing tube (42), collector output pulse M1; The grounded emitter of said second sensitizing tube (43), collector output pulse M2; Wiring board (46) is used for fixing luminotron (41), first sensitizing tube (42) and second sensitizing tube (43), and shell (44), glass plate (45) are used for the encapsulation of probe (4); Probe (4) is aimed at the machine carousel of electric energy meter and is directly bonded on the window glass of said electric energy meter.
5. the device that common electric energy meter is transformed into intelligent electric meter as claimed in claim 2; It is characterized in that: said acquisition terminal (2) has an interface circuit (21) and single-chip microcomputer MPU (22); Interface circuit (21) comprises two shaping circuits (211), (212) and resistance (214); Two shaping circuits (211) and (212) are used for pulse M1 and M2 from probe (4) are carried out shaping, remove shake, output to said single-chip microcomputer MPU (22) then; Resistance (214) is used for converting power Vcc to output to probe (4) behind the continuous current V+.
6. the device that common electric energy meter is transformed into intelligent electric meter as claimed in claim 5; It is characterized in that: said interface circuit (21) also comprises resistance (215) and VMOS pipe (216); The O1 of said MPU (22) output connects the grid of VMOS pipe (216) behind resistance (215), grounded drain, the source electrode of VMOS pipe (216) meet V+; After powering on, O1 output 0, VMOS manages (216) not conducting, and V+ has electricity, and the luminotron (41) of probe (4) is luminous, said single-chip microcomputer MPU (22) received pulse M1 and M2; After after a while, MPU (22) can predict the interval T of pulse, and afterwards, after MPU received M1 and M2, input and the output O1 that turn-offs paired pulses was 1, (216) conducting of VMOS pipe, V+ do not have electricity, and the luminotron (41) of probe (4) stops luminous; Delay time one period less than T, the pulse input that the luminotron (41) that MPU output O1 is 0, turn-off VMOS pipe (216), probe is luminous again, open MPU (22) more so continues.
7. as claimed in claim 3 common electric energy meter is transformed into the device of intelligent electric meter, it is characterized in that: probe (4) also comprises light conductor (47), bus driving circuits (49), circuit board (46) and housing (44); Wiring board (46) is used for fixing imageing sensor (48), illuminating lamp (4A) and realizes wiring, and shell (44) is used for the encapsulation of probe (4); The table ins and outs wheel of probe (4) aligning electric energy meter is bonded on the front glass panel of stem-winder with the mode of quick bonding; Light conductor (47) is with the luminous table ins and outs wheel that is directed to of illuminating lamp (4A); When having electricity, V+ do not illuminate table ins and outs wheel by natural light; The image of table ins and outs wheel is mapped on the imageing sensor (48) through light conductor (47), and every width of cloth image that imageing sensor (48) will be experienced becomes a frame image data, process bus driving circuits (49) and data bus DB output image data to acquisition terminal (2); The work of imageing sensor (48) is controlled by acquisition terminal (2).
8. the device that common electric energy meter is transformed into intelligent electric meter as claimed in claim 7; Said acquisition terminal (2) comprises interface circuit (21) and single-chip microcomputer MPU (22), and this interface circuit (21) comprises bus driving circuits (217), image recognition device (218) and resistance (214); Bus driving circuits (217) receive through data bus DB input from the view data of probe (4) and output to image recognition device (218), image recognition device (218) converts view data into the table truth of a matter according to W
S, output W
STo single-chip microcomputer MPU (22); Power Vcc becomes voltage transitions the V+ that outputs to probe (4) behind the continuous current through resistance (214).
9. as claimed in claim 1 common electric energy meter is transformed into the device of intelligent electric meter, it is characterized in that: acquisition terminal (2) comprises interface circuit (21), single-chip microcomputer MPU (22), crystal oscillator (23), resets and watchdog circuit (24), clock circuit (25), switching value input circuit DI (29), switching value output circuit DO (2A), man-machine interface circuit (26), telecommunication circuit (27) and power supply (28); Probe (4) connects the single-chip microcomputer MPU (22) of acquisition terminal (2) through interface circuit (21); The oscillator signal that crystal oscillator (23) produces provides frequency of operation for single-chip microcomputer MPU; Reset and watchdog circuit (24) is input to single-chip microcomputer MPU and produces electrification reset and the operation of keeping watch on MPU; Clock circuit (25) is that real-time clock RTC connection MPU (22) provides pulse per second (PPS) and Time of Day data for it; The status signal of switching value input circuit DI (29) input gate inhibition signal, on-load switch, output to single-chip microcomputer MPU (22); The switching value signal of switching value output circuit DO (2A) input single-chip microcomputer MPU (22) output, output control on-load switch are by the electricity consumption power supply of on-load switch control electricity consumer; Man-machine interface circuit (26) receives the data of single-chip microcomputer MPU (22) and shows or receive artificial input command through button with liquid crystal or charactron and outputs to MPU (22); Telecommunication circuit (27) is used for the exchanges data of single-chip microcomputer MPU (22) and external digital equipment (3); Power supply (28) provides power supply for acquisition terminal (2) internal circuit.
10. as claimed in claim 8 common electric energy meter is transformed into the device of intelligent electric meter, it is characterized in that: acquisition terminal (2) also comprises analog input circuit (2B).
11. device that N common electric energy meter is transformed into intelligent electric meter; Comprise: a N probe (4) and an acquisition terminal (2) is characterized in that: said N probe (4) fixing respectively and aim at a said N electric energy meter electric energy window, induction electric energy image, connect said acquisition terminal (2); At the bottom of said acquisition terminal (2) reads said N electric energy image, judges N power direction and N electric energy increment of calculating, is accumulated as N the forward and reverse table of electric flux from said N probe (4) respectively through N interface circuit (21), at the bottom of the N timesharing table and also demonstration at the bottom of N ladder table; Through N on-load switch of N switching value output circuit control, reach pre-payment control and Long-distance Control; Thereby, the function of N intelligent electric meter of completion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202357284U CN202305628U (en) | 2011-07-06 | 2011-07-06 | Device capable of reforming common electric energy meter into intelligent electric energy meter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202357284U CN202305628U (en) | 2011-07-06 | 2011-07-06 | Device capable of reforming common electric energy meter into intelligent electric energy meter |
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| Publication Number | Publication Date |
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| CN202305628U true CN202305628U (en) | 2012-07-04 |
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|---|---|---|---|
| CN2011202357284U Expired - Fee Related CN202305628U (en) | 2011-07-06 | 2011-07-06 | Device capable of reforming common electric energy meter into intelligent electric energy meter |
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| CN (1) | CN202305628U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279312A (en) * | 2011-07-06 | 2011-12-14 | 保定市三川电气有限责任公司 | Method and device for modifying conventional electric energy meter into intelligent electric energy meter |
| CN114069623A (en) * | 2021-11-17 | 2022-02-18 | 南京新联电子股份有限公司 | Remote fee control system and method based on platform area intelligent terminal edge calculation |
-
2011
- 2011-07-06 CN CN2011202357284U patent/CN202305628U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279312A (en) * | 2011-07-06 | 2011-12-14 | 保定市三川电气有限责任公司 | Method and device for modifying conventional electric energy meter into intelligent electric energy meter |
| WO2013004155A1 (en) * | 2011-07-06 | 2013-01-10 | Hao Yushan | Method and device for transforming ordinary electricity meter into smart meter |
| CN102279312B (en) * | 2011-07-06 | 2016-04-06 | 保定市三川电气有限责任公司 | A kind of method and apparatus common electric energy meter being transformed into intelligent electric meter |
| CN114069623A (en) * | 2021-11-17 | 2022-02-18 | 南京新联电子股份有限公司 | Remote fee control system and method based on platform area intelligent terminal edge calculation |
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