CN2662259Y - Three-phase full-electronic pre-charged time division watt-hour meter - Google Patents
Three-phase full-electronic pre-charged time division watt-hour meter Download PDFInfo
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- CN2662259Y CN2662259Y CN 200320112299 CN200320112299U CN2662259Y CN 2662259 Y CN2662259 Y CN 2662259Y CN 200320112299 CN200320112299 CN 200320112299 CN 200320112299 U CN200320112299 U CN 200320112299U CN 2662259 Y CN2662259 Y CN 2662259Y
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Abstract
The utility model relates to a novel three-phase static prepayment time-share electricity meter, comprising a shell and a control circuit. The utility model is characterized in that the control circuit has at least a power measuring unit, a data processing display unit, a cut-off control circuit and an interface section. The utility model has the advantages that the user three-phase electricity consumption can be accurately measured; the user electricity load current can be indicated by means of the flicker frequency of a flux LED. Data displaying is supported by an electric register, an eight-digit LED numerical display and nine light-emitting diodes (LEDs); all of the displayable messages can reach up to fourteen or more, and all the displayable messages are displayed according to the user-defined displaying order and number when inserting a card; two levels of alarm are available for a case of power supply shortage. In addition, an indication is provided for three-phase error, as well as a time-division indication for the three tariffs of the peak/ shoulder/off peak of the power. Moreover, a back-up source for watt meter clock is provided for a trouble-free service life of ten years; a high-capacity profession back-up source is provided for supports of IC card and infrared meter reading during power interruption; data can be transmitted to a background charging management system via an IC card or an infrared palmtop.
Description
Technical field
The utility model belongs to the electric energy meter field, particularly relates to the three-phase full-electronic pre-payment time-sharing electric energy meter of a kind of electric energy metrical and electricity consumption clearing.
Background technology
Existing prepayment meter in the prior art, but present prepayment meter can only be according to the control of paying of the metering numerical value of electric energy and forward purchasing numerical value, have the following disadvantages: the one, electricity charge rate is fixed, and dump energy that can't the his-and-hers watches meter when running into the electricity charge and adjusting increases income or moves back the valency of making up the difference; The 2nd, can't carry out electricity consumption preferential policies such as time-sharing measurement, the clearing of many rates, can not monthly store clearing; The 3rd, lack necessary power information demonstration and current state indication, more can not show corresponding information according to user intention; The 4th, can not realize having a power failure and check meter.
The utility model content
The purpose of this utility model is the deficiency in the background technology, and design a kind of novel three-phase full-electronic pre-payment time-sharing electric energy meter, its storage monthly, time-sharing measurement, the clearing of many rates can also be checked meter by DISPLAY ORDER demonstration corresponding information and realization power failure that the user sets according to user intention.
The technical scheme that the utility model adopts for achieving the above object is: three-phase full-electronic pre-payment time-sharing electric energy meter, form by housing and control circuit.It is characterized in that comprising at least in the said control circuit electric energy metrical unit, data processing display unit, power-off control circuit and interface section.Wherein: sample to user's three-phase voltage electric current by the three-phase voltage current sampling circuit in said electric energy metrical unit, measure and export the pulse signal that is proportional to user's electric flux through three-phase electrical energy computation chip, this signal drives the electronics register through frequency division and offers the data processing display unit simultaneously; Said data processing display unit is handled the pulse signal that metering units provides by central control processor, finishes the data processing work of metering and storage, drives corresponding display circuit simultaneously; Said power-off control circuit links to each other with the data processing display unit, and control contactor is realized outage when dump energy is not enough; Said interface section comprises IC-card interface and infrared interface, all realizes the physical connection with central control processor CPU.
The utility model has the advantages that accurately the power consumption of metering user three-phase electricity is indicated the user power utilization load current with the frequency that light emitting diode is glittering; Video data uses electronics register, eight LED charactrons and nine light emitting diodes to finish jointly, can show totally 14 more than of all information, and can and show that all number shows when the plug-in card according to user-defined DISPLAY ORDER; Electric weight has two-stage to report to the police when not enough; The indication of three-phase electricity phase shortage; The three rate timesharing indication of Pinggu, peak; The backup battery of ammeter clock can non-fault use 10 years; IC-card and infrared copy meter during with high capacity specialty backup battery support outage, data pass to the backstage management system for selling power by IC-card or infrared palm PC.Make management of power use department can grasp the user power utilization situation, can also carry out corresponding rewards and punishments to each electricity consumption period according to the rules, increased the technological means of electricity consumption marketing in prepaid, when exempting to check meter.In addition, the utility model is the full-electronic electric energy meter, but the machine shape of design and installation dimension and existing triphase induction type 862 electric energy meters are identical, can directly replace mechanical electric energy meter in original batch meter (cabinet).
Be described in detail with reference to accompanying drawing below with reference to embodiment of the present utility model.
Description of drawings
Fig. 1 three-phase full-electronic pre-payment time-sharing electric energy meter theory diagram;
Fig. 2 electric energy metrical element circuit schematic diagram;
Fig. 3 data processing display unit circuit schematic diagram;
Fig. 4 three-phase full-electronic pre-payment time-sharing electric energy meter program flow chart.
Embodiment
Present embodiment provides a kind of three-phase full-electronic pre-payment time-sharing electric energy meter.This table is used the drain pan and the shell of 862 serial triphase induction type stem-winders, and machine shape is identical with it with installation dimension.
Present embodiment comprises housing and control circuit, and control circuit is formed (as shown in Figure 1) by electric energy metrical unit, data processing display unit, power-off control circuit and interface section.Sample to user's three-phase electricity consumption electric current and voltage in its electric energy metrical unit, sampled signal is handled through three-phase electrical energy computation chip U3 (SA9105FP), and the pulse signal of output direct ratio and user's electric flux is indicated this pulse by LED.This pulse signal output signal A-COUNT behind U4 (4046) frequency division drives accumulative total electric weight or the electric degree that electronics register XO1 shows this user simultaneously, offers the data processing display unit simultaneously and carries out data processing.The central control processor D101 (PIC18C4X2) of its data processing display unit finishes all data processing work such as pre-payment control, time-sharing measurement storage, regularly storage of data, detection of power loss, the processing of pulse mantissa in order to handle the pulse signal that metering units provides.Real-time clock is used to provide central control processor D101 (PIC18C4X2) required perpetual calendar and time reference, two green LED charactron N110 (E20361) are used for the display message code, the LED charactron N111 of six redness and N112 are used to show dump energy and corresponding power information, necessary outage or the period rate information of nine light emitting diodes (H101-H109) indication.IC-card and infrared interface realize and the physical connection of central control processor D101 (PIC18C4X2) that storer D102 (9346) is used to store user's electric quantity data and ammeter correlation parameter.
Three-phase voltage current sampling circuit in the electric energy metrical unit is to gather three-phase current with threephase current transformer, the current signal input three-phase electrical energy computation chip U3 (SA9105FP) of sampling, also import three-phase electrical energy computation chip U3 (SA9105FP) after the three-phase voltage process resistor network dividing potential drop, U3 calculates by the 37 pin FOUT3 output direct ratio of U3 and the pulse signal of user's electric weight the electric current and voltage sampled signal, indicates this pulse by the LED of electric energy metrical unit.The electronics register XO1 of the output signal A-COUNT driving electric energy metrical unit behind U4 (4046) frequency division of this pulse simultaneously shows this user's accumulative total electric weight or electric degree.
Comprise central control processor CPU (D101 is PIC18C4X2), storer D102 (9346) and clock chip D103 (RS5C372A) in the data processing display unit, reach 8 LED charactrons through D104 (74LS164) and D105 (74LS138) driving.Be input to the 7th pin RA5 of central control processor D101 (PIC18C4X2) from the pulse signal of electric energy metrical unit output, by it according to the actual power consumption of using of predefined pulse constant calculations user, read among the storer D102 (9346) that links to each other with this pin the electric weight of preserving in advance by D101 the 16th, 18 pin simultaneously, be written back among the storer D102 as new dump energy with the successively decrease electric weight of use of this electric weight.
In the interface section, with IC-card that XT4 connected or the RECEIVE infrared mode meter reading communication of forming by N109, the power supply of realizing having a power failure and checking meter by V106 (IN5817) by jumbo 6V backup battery BATTERY1, be connected to electronic switch D108 (R1111N501A) the 3rd pin by IC-card mouth XT4 the 6th pin, power consumption minimum when utilizing behind the plug-in card feedback signal of XT4 the 6th pin to control this electronic switch to guarantee the power failure standby to reach control battery break-make.
In the power-off control circuit, the duty of the 40 pin RB7 control triode Q104 (9013) of central control processor D101, make it when needs cut off the power supply, keep state of saturation, this moment its C, E pin myopia path, the relay that is connected on the XT5 can move under the vdd voltage effect, this relay will remove control outage control panel as auxiliary reclay, and this control panel will make the contactor outage of external control user load.
In the data processing display unit, clock chip D103 (RS5C372A) and crystal oscillator X101, building-out capacitor C115 and the 3.6V backup battery BATTERY2 of 32.768KHz form real time clock circuit, provide the surplus monthly of time-sharing measurement and data required perpetual calendar and time reference.2 pin of central control processor D101 link to each other with the 2nd pin of clock chip D103, for it provides the frequency reference of work.Two chip the 3rd pin link to each other real time reference are provided.
In the data display circuit of data processing display unit, use electronics register XO1 to show the accumulative total power consumption; Use 8 LED charactrons (N110, N111, N112) to show relevant ammeter and parameter information; Use the corresponding information of nine light emitting diodes (H101-H109) indication to comprise phase failure indication, current period rate indication, pulse indication, power alarm indication and communication indication.
Figure 2 shows that electric energy metrical element circuit schematic diagram of the present utility model, U3 is special-purpose three-phase electrical energy computation chip (selecting SA9105FP for use), and U6 is that operational amplifier LM324M detects and indication in order to realize the three-phase phase failure.Gather the electricity consumption electric current of user's three-phase with threephase current transformer, by ACUR, BCUR, CCUR terminal input U3, three-phase voltage is imported U3 by AVOL, BVOL, CVOL terminal after passing through the resistor network dividing potential drop, U3 samples to electric current and voltage and calculates, and the pulse signal by 37 pin FOUT3 output direct ratio and active user's electric energy, indicate this pulse by LED, this pulse signal drives the accumulative total electric weight that electronics register XO1 shows this user through output signal A-COUNT behind U4 (4046) frequency division simultaneously.
Figure 3 shows that data processing display unit circuit schematic diagram of the present utility model, comprise central control processor D101 (PIC18C4X2), storer D102 (9346) and clock chip D103 (RS5C372A), one group 2 (N110) and two groups 3 (N111-N112) totally eight LED charactron drive via D104 (74LS164) and D105 (74LS138) and show corresponding information.The pulse signal of electric energy metrical unit output is input to central control processor D101, go out the actual power consumption of using according to predefined pulse constant calculations, the electric weight number that will be kept at storer D102 (9346) simultaneously in advance successively decreases the electric weight number that uses as dump energy, when being zero, passes through this dump energy outage control panel control external agency (contactor) outage, the pre-payment control function of electricity consumption after realizing paying earlier.Compatible clock chip D103 (RS5C372A) and D106 (R2025S/D) and clock crystal oscillator X101 (32.768KHz), building-out capacitor C115 and backup battery BATTERY2 form real time clock circuit, provide the surplus monthly of time-sharing measurement and data required perpetual calendar and time reference, therefore this electric energy meter can be according to the predefined surplus power consumption in this month when day zero of checking meter, can preserve 3 months data altogether, when the user bought new electric weight, all user power utilization data passed to Utilities Electric Co. with the electric IC-card of purchasing of user.Jumbo backup battery BATTERY1 is used for having a power failure and checks meter, and controls the break-make of this battery by IC-card mouth and electronic switch D108 (R1111N501A), and this battery is only supplied CPU work and realized having a power failure and check meter.The data presentation of data processing display unit is used collaborative corresponding demonstration and the deixis of realizing of electronics register XO1, eight LED charactrons (N110-N112) and nine light emitting diodes (H101-H109).
Figure 4 shows that program flow chart of the present utility model, be divided into several modules and handle the function that realizes separately by the main flow synthetic operation.Program begins initialization the resetting and self-checking function of back single-chip microcomputer of realizing powering on, and the task scheduling master routine is the utility model major cycle flow process, finishes the cooperative scheduling work of each function subprogram by it.1, idle task: redundant program is used for the circulation and the Software Anti-interference of main flow.2, mantissa is preserved in power failure: the instant preservation of pulse mantissa when being used to detect system's power down guarantees that whenever not losing pulse does not lose electric weight.3, relay control: be used for when power alarm or 0 electric weight the auxiliary reclay in the control table and give contactor power-off signal, the off-position of reset relay when the user imports new electric weight.4, electric energy metrical: be used to detect the pulse signal that the electric energy metrical unit is sent here, by the actual power consumption of using of predefined pulse constant calculations user, the electric weight number that will be kept at storer D102 (9346) simultaneously in advance successively decreases the electric weight number that uses as dump energy.5, IC-card operation: be used for carrying out communication transmission corresponding data, comprise that the user purchases electricity, inquiry, have a power failure and check meter or the like, go back contact-making switch simultaneously as high capacity backup battery BATTERY1 in the table with the IC-card of various functions.6, display module: be used to control display unit and show relevant information and indication correlation behavior, use the electronics register to show the accumulative total power consumption, use 8 LED charactrons to show relevant ammeter and parameter information, use nine light emitting diodes to indicate corresponding information to comprise phase failure indication, current period rate indication, pulse indication, power alarm indication and communication indication etc.7, write-back: be used for when user's IC-card plug-in card data and relevant information in the table are written back to this card, carry out data analysis and maintenance turning back to Utilities Electric Co. at last by this card.8, the time handles: be used for real-time clock setting, read and calibrate, provide total system necessary time reference.9, infrared card operation: be used for and, this epiphase related parameter be set, also can be used for reading these table data and power failure and check meter with the equipment such as the palm PC communication of infrared excuse.
Claims (8)
1, a kind of three-phase full-electronic pre-payment time-sharing electric energy meter is made up of housing and control circuit, it is characterized in that comprising at least in the said control circuit electric energy metrical unit, data processing display unit, power-off control circuit and interface section; Sample to user's three-phase voltage electric current by the three-phase voltage current sampling circuit in said electric energy metrical unit, measure and export the pulse signal that is proportional to user's electric flux through three-phase electrical energy computation chip, this signal drives the electronics register through frequency division and offers the data processing display unit simultaneously; Said data processing display unit is handled the pulse signal that metering units provides by central control processor, finishes the data processing work of metering and storage, drives corresponding display circuit simultaneously; Said power-off control circuit links to each other with the data processing display unit, and control contactor is realized outage when dump energy is not enough; Said interface section comprises IC-card interface and infrared interface, all realizes the physical connection with central control processor CPU.
2, according to the described three-phase full-electronic of claim 1 pre-payment time-sharing electric energy meter, it is characterized in that the three-phase voltage current sampling circuit in the said electric energy metrical unit is to gather three-phase current with threephase current transformer, the current signal input three-phase electrical energy computation chip U3 (SA9105FP) of sampling, also import three-phase electrical energy computation chip U3 (SA9105FP) after the three-phase voltage process resistor network dividing potential drop, U3 calculates by the 37 pin FOUT3 output direct ratio of U3 and the pulse signal of user's electric weight the electric current and voltage sampled signal, indicates this pulse by the LED of electric energy metrical unit; The electronics register XO1 of the output signal A-COUNT driving electric energy metrical unit behind U4 (4046) frequency division of this pulse simultaneously shows this user's accumulative total electric weight or electric degree.
3, according to the described three-phase full-electronic of claim 1 pre-payment time-sharing electric energy meter, it is characterized in that comprising in the said data processing display unit central control processor CPU (D101 is PIC18C4X2), storer D102 (9346) and clock chip D103 (RS5C372A), reach 8 LED charactrons through D104 (74LS164) and D105 (74LS138) driving; Be input to the 7th pin RA5 of central control processor D101 (PIC18C4X2) from the pulse signal of electric energy metrical unit output, by it according to the actual power consumption of using of predefined pulse constant calculations user, read among the storer D102 (9346) that links to each other with this pin the electric weight of preserving in advance by D101 the 16th, 18 pin simultaneously, be written back among the storer D102 as new dump energy with the successively decrease electric weight of use of this electric weight.
4, according to the described three-phase full-electronic of claim 1 pre-payment time-sharing electric energy meter, it is characterized in that said interface section, with IC-card that XT4 connected or the RECEIVE infrared mode meter reading communication of forming by N109, the power supply of realizing having a power failure and checking meter by V106 (IN5817) by jumbo 6V backup battery BATTERY1, be connected to electronic switch D108 (R1111N501A) the 3rd pin by IC-card mouth XT4 the 6th pin, utilize behind the plug-in card feedback signal of XT4 the 6th pin to control this electronic switch.
5, according to the described three-phase full-electronic of claim 1 pre-payment time-sharing electric energy meter, it is characterized in that in the said power-off control circuit, the duty of the 40 pin RB7 control triode Q104 (9013) of central control processor D101, make it when needs cut off the power supply, keep state of saturation, this moment its C, E pin myopia path, the relay that is connected on the XT5 can move under the vdd voltage effect.
6, according to claim 1 or 3 described three-phase full-electronic pre-payment time-sharing electric energy meters, it is characterized in that in the said data processing display unit, clock chip D103 (RS5C372A) and crystal oscillator X101, building-out capacitor C115 and the 3.6V backup battery BATTERY2 of 32.768KHz form real time clock circuit, provide the surplus monthly of time-sharing measurement and data required perpetual calendar and time reference; 2 pin of central control processor D101 link to each other with the 2nd pin of clock chip D103, for it provides the frequency reference of work; Two chip the 3rd pin link to each other real time reference are provided.
7, according to the described three-phase full-electronic of claim 6 pre-payment time-sharing electric energy meter, it is characterized in that in the data display circuit of said data processing display unit, use electronics register XO1 to show the accumulative total power consumption, use 8 LED charactrons (N110, N111, N112) to show relevant ammeter and parameter information, use the corresponding information of nine light emitting diodes (H101-H109) indication to comprise phase failure indication, current period rate indication, pulse indication, power alarm indication and communication indication.
8,, it is characterized in that said machine shape is identical with 862 serial triphase induction type electric energy meters with installation dimension according to the described three-phase full-electronic of claim 1 pre-payment time-sharing electric energy meter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320112299 CN2662259Y (en) | 2003-11-21 | 2003-11-21 | Three-phase full-electronic pre-charged time division watt-hour meter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320112299 CN2662259Y (en) | 2003-11-21 | 2003-11-21 | Three-phase full-electronic pre-charged time division watt-hour meter |
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| CN2662259Y true CN2662259Y (en) | 2004-12-08 |
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| CN 200320112299 Expired - Fee Related CN2662259Y (en) | 2003-11-21 | 2003-11-21 | Three-phase full-electronic pre-charged time division watt-hour meter |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100492027C (en) * | 2006-12-08 | 2009-05-27 | 北京中星微电子有限公司 | Real time collection storage apparatus used for electric energy computation chip |
| CN102692536A (en) * | 2011-03-21 | 2012-09-26 | 北京华煜宏博科技有限公司 | Multi-step charging electricity meter device |
| CN103226330A (en) * | 2013-03-27 | 2013-07-31 | 杭州绿庭照明管理有限公司 | Outdoor load switch controller |
| CN103389396A (en) * | 2013-07-09 | 2013-11-13 | 华立仪表集团股份有限公司 | Single-phase register ammeter with far infrared communication function and registering method thereof |
| CN103257260B (en) * | 2012-10-24 | 2017-02-08 | 惠州市惠之声实业有限公司 | Method for resisting alternating magnetic field interference and sample resistor |
-
2003
- 2003-11-21 CN CN 200320112299 patent/CN2662259Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100492027C (en) * | 2006-12-08 | 2009-05-27 | 北京中星微电子有限公司 | Real time collection storage apparatus used for electric energy computation chip |
| CN102692536A (en) * | 2011-03-21 | 2012-09-26 | 北京华煜宏博科技有限公司 | Multi-step charging electricity meter device |
| CN103257260B (en) * | 2012-10-24 | 2017-02-08 | 惠州市惠之声实业有限公司 | Method for resisting alternating magnetic field interference and sample resistor |
| CN103226330A (en) * | 2013-03-27 | 2013-07-31 | 杭州绿庭照明管理有限公司 | Outdoor load switch controller |
| CN103389396A (en) * | 2013-07-09 | 2013-11-13 | 华立仪表集团股份有限公司 | Single-phase register ammeter with far infrared communication function and registering method thereof |
| CN103389396B (en) * | 2013-07-09 | 2016-04-13 | 华立科技股份有限公司 | A kind of single-phase register ammeter and metering method thereof with Far-infrared communication function |
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| CF01 | Termination of patent right due to non-payment of annual fee |