CN2386445Y - Electric IC card electricity meter controlled by mechanical and electronic counting double-display closed-loop - Google Patents
Electric IC card electricity meter controlled by mechanical and electronic counting double-display closed-loop Download PDFInfo
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- CN2386445Y CN2386445Y CN 99218080 CN99218080U CN2386445Y CN 2386445 Y CN2386445 Y CN 2386445Y CN 99218080 CN99218080 CN 99218080 CN 99218080 U CN99218080 U CN 99218080U CN 2386445 Y CN2386445 Y CN 2386445Y
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Abstract
The utility model relates to an electric IC card electricity meter controlled by mechanical and electronic counting double-display closed-loop. The electricity meter makes an SCM 8051 as a center, formed by the connection of an electric current electric voltage sample circuit, a power conversion circuit, an electric voltage frequency conversion circuit, a machine, an electronic counting double-display closed-loop feedback lock circuit, an anti-overload evasiveness electrical signal sampling circuit, a user power control circuit, a card read and write control, an electric quantity internal memory circuit. The design circuit of the electricity meter is novel, simplified. The machine and the electricity meter are the electronic counting dual-display closed-loop control closed-loop control, and the IC card has no positive or negative direction, the data is accurate, the retention data is stable, the electric meter is safe and reliable, the level of the automation, and the intelligent of the electric meter can be raised.
Description
The utility model relates to the electric energy metrical field, particularly a kind of machinery, the two closed-loop control electronic type IC-card watt-hour meter that show of electronic counting.
Known electron watt-hour meter both domestic and external, adopt electronic countings more and show (hereinafter to be referred as electronic counting) with LCD or LED charactron, the SPI series electronic formula watt-hour meter of copying import that has, adopt the digit pulse drive stepping motor, motor is driving device rolling counters forward (hereinafter to be referred as mechanical count) again, the machinery of employing is also arranged, electronic counting is two to be shown, these watt-hour meter all have relative merits separately, the advantage of electronic counting is simple in structure, cost is lower, volume is little, but the shortcoming that circuit damaged and had loss of data appears unavoidably, manage power stealing to the user opportunity is arranged, particularly with the watt-hour meter of IC-card pre paid functionality, though have the backup of management of power use department to purchase electric electricity consumption situation, will occur electricity consumption dispute problem after the loss of data; The advantage of mechanical count is directly perceived and closes traditional habit and circuit damages the back data and keeps forever, meeting thunderbolt waits the strong jamming situation still same reliable, but with regard to simple and mechanical counting, in practical process, import table SPI-11 type also can occurrence count the unreliable phenomenon of imbalance; For machinery, the two demonstrations of electronic counting, if not adopting close-loop feedback to count synchronously, occur the insecure phenomenon of data too, thereby may cause the inconsistent electricity consumption dispute that brings of two kinds of countings; Be the prepayment IC-card watt-hour meter of purchasing electricity back electricity consumption earlier in addition, IC-card is except that purchasing the electric work energy, observe Electrical key attach features such as dump energy, electricity consumption situation in addition, because the IC-card that uses all is that the branch direction is inserted at present, it is frequent with the deck operation to card that user and power supply management department plug-in card pull out card, often come in contact the bad error that causes, use and owe convenient.The result does not have report of the present utility model at present as yet by retrieval.
The purpose of this utility model is to provide a kind of IC-card plug-in card to be regardless of the two two closed-loop control electronic type IC-card watt-hour meter that show of machinery, electronic counting that show the close-loop feedback synchronous working of both forward and reverse directions, machinery and electronic counting.
The purpose of this utility model is achieved in that below in conjunction with drawings and Examples and describes in detail:
Fig. 1 is a circuit structure block diagram of the present utility model, as shown in Figure 1: this watt-hour meter is center and current-voltage sampling, Power Conversion and voltage frequency conversioning circuit with single-chip microcomputer 8051, mechanical count, the two close-loop feedback synchronizing circuits that show of electronic counting, overload tax evasion electric signal sample circuit and user's on/off control circuit, the IC-card read-write is controlled, five circuit of electric weight memory control circuit link composition.Current-voltage sampling, Power Conversion and voltage frequency conversioning circuit be by operational amplifier A, current transformer B, Power Conversion multiplier AD534, the T0 pin of voltage to frequency converter LM331 and single-chip microcomputer 8051 composition (referring to Fig. 2) that links; Machinery, the two P10 that show the close-loop feedback synchronizing circuit by single-chip microcomputer 8051 of electronic counting, two mouthfuls of lines of P11 connect the bridge-type pulse and amplify buffer circuit T1, T2, T3, T4, stepper motor M, motor M is connected on the mechanical counter 1 by axle, infrared transmitting tube D, infrared receiving tube T5 constitutes the photoelectricity coupled circuit, be contained in carry gear 2 both sides of counter support, infrared receiving tube T5 emitter resistance joins by the INT1 pin of phase inverter G1 and single-chip microcomputer 8051, the RXD of single-chip microcomputer 8051, the synchronous output data of TXD pin serial, receive the parallel output integration block MC74HC164 of serial input again and line output sending and receiving light show the corresponding pin of charactron E40301, the P14 of single-chip microcomputer 8051, P15, P16, P17 meets T6, T7, T8, T9 control E40301 completion bit gating shows forms (referring to Fig. 3); The structure of above-mentioned mechanical counter 1 such as Fig. 4, decimal place on the mechanical counter to the carry gear 2 of one's carry as shown in Figure 5, on the outward flange of carry gear, have three photoelectricity coupling apertures that are mutually 120 degree angles, when decimal place carry gear turns around, make on the carry gear one of them optically-coupled hole be contained in the infrared transmitting tube D on carry gear 2 both sides and infrared receiving tube T5 in a straight line; The sampling of antioverloading tax evasion electric signal and user's power control circuit are by magnetic ring coil L, operational amplifier A 2 and resistance R 4, R5, R6, capacitor C 2 amplifying circuits, capacitor C 3, C4, diode D3, D4, resistance R 7 rectifying and wave-filterings, receive comparer A1 with resistance R 1, R2 diode D1, capacitor C 1, variable resistor W, resistance R 3, all receive signal shaping phase inverter G through diode D2 and join with the INT0 pin of single-chip microcomputer 8051 again; The control of operating a switch of sound and light alarm, power supply is joined by 15,16,17 pins of triode T2, loudspeaker Y, triode T3, LED, triode T1, relay J and single-chip microcomputer 8051 and is formed (referring to Fig. 6); IC-card read-write control, electric weight main memory circuit are made user's electric weight memory element by string type electrically alterable storage 93C46, join with gating end, clock terminal, data input pin, the data output end of 93C46 respectively with P00, the P01 of single-chip microcomputer 8051, P02, P03 pin, IC-card adopts ciphering type serial electrically alterable storage, its input and output bi-directional data end, reset terminal, clock address end, check fusing control end, programming Control end respectively with P03, P04, P05, P06, the P07 pin of single-chip microcomputer 8051 composition (referring to Fig. 7) that joins; The wiring of described IC-card deck be on the deck row's contact flat spring 1～8 with arrange down contact flat spring 8 '～1 ' corresponding, receive P03, P04, P05, P06, the P07 pin (referring to Fig. 8) of single-chip microcomputer 8051 after linking with lead-in wire, the IC-card chip is contained on the printed circuit board (PCB), there is the same and corresponding with the deck shell fragment contact point of spacing (bar) on the circuit board two sides, each pin 1～8 is pressed and opposite order 8 '～1 ' contacting of pros and cons on circuit board, and each pin of IC-card just can be regardless of both forward and reverse directions with the corresponding shell fragment of deck and all connect (referring to Fig. 9).
Principle of work of the present utility model such as Fig. 2 are to shown in Figure 9:
One, current/voltage sampling, Power Conversion and voltage frequency conversioning circuit principle of work are referring to Fig. 2: voltage signal through operational amplifier A isolate deliver to after following Power Conversion multiplier AD534 multiply each other the power voltage signal, convert digit pulse to through voltage to frequency converter LM331 again and send the T0 pin of single-chip microcomputer 8051 to carry out electronic counting;
Two, the two close-loop feedback synchronizing circuit principle of work that show of machinery, electronic counting are referring to Fig. 3: the pulse signal that single-chip microcomputer 8051 is sent LM331 here carries out frequency division of software to be handled, and realizes electronic counting; P10 by single-chip microcomputer 8051, P11 pin output signal is amplified buffer circuit drive stepping motor M through the bridge-type pulse and is promoted mechanical counter 1 counting, decimal place turns around and advances for the moment to individual position on counter, drive carry gear 2 and rotate 1/3 circle, photoelectricity coupling aperture on the carry gear and infrared transmitting tube D and infrared receiving tube T5 are in a straight line like this, make T5 receive signal, on the T5 emitter resistance, export high level, deliver to the INT1 pin of single-chip microcomputer through phase inverter G1, after single-chip microcomputer receives this feedback signal, judge that by software whether the umber of pulse give stepper motor and step motor drive mechanical counter rotate step-out, so that in time remedy, P10 by single-chip microcomputer 8051, two mouthfuls of lines of P11, buffer circuit T1 is amplified in the bridge-type pulse, T2, T3, T4, stepper motor M, mechanical counter 1, carry gear 2, infrared transmitting tube D, the photoelectricity coupled circuit that infrared receiving tube constitutes, phase inverter G1, the INT1 pin of single-chip microcomputer 8051 is formed closed loop, realize machinery, the two purposes that show the closed loop synchronous working of electronic counting, this control procedure, scm software makes a mechanical counter position turn over a reading, be that user's electric weight internal memory electronic counting is subtracted 1 just in time just, even machinery, two kinds of countings of electronics are consistent.If luminous demonstration charactron E40301, can be the electronic counting result, dump energy shows, in the RXD of single-chip microcomputer 8051 end serial output data, the TXD end sends synchronizing pulse simultaneously, giving the parallel again corresponding pin that outputs to E40301 of the parallel output integration block MC74HC164 of serial input with the electronic counting data serial shows, the P14 of single-chip microcomputer 8051, P15, P16, P17 is through T6, T7, T8, T9 shows E40301 completion bit gating, when the user inserts deck with IC-card, can show that the electronic counting result is (except that plug-in card and overload and tax evasion electricity, do not show saves energy at ordinary times);
Three, antioverloading, anti-theft electric leakage and user's power control circuit principle of work are referring to Fig. 6: overload circuit is resistance R 1, diode D1, capacitor C 1,2 pairs of current sampling signal decay of resistance R and rectification and filtering, detect the size of user load electric current, variable resistor W, resistance R 3 are regulated the size of overload, send into comparer A1 is transported to signal shaping phase inverter G and single-chip microcomputer 8051 through diode D2 INT0 pin; The tax evasion electricity is to produce induced voltage among the coil L to detect the tax evasion electric signal, the amplifying circuit of forming through operational amplifier A 2 and resistance R 4, R5, R6, capacitor C 2 amplifies, and capacitor C 3, C4, diode D3, D4, resistance R 7 rectifying and wave-filterings are conveyed into the INP0 pin of signal shaping phase inverter G and single-chip microcomputer 8051; 15 (T1), 16 (WR), 17 (RD) pin by triode T2, loudspeaker Y and triode T3, LED, triode T1, relay J and single-chip microcomputer 8051 are formed sound and light alarm, user's power control circuit.When overload tax evasion electricity, signal shaping phase inverter G has low level to output to the INP0 pin of single-chip microcomputer 8051, after single-chip microcomputer promptly detects this signal, just sound and light alarm is pointed out the user, and the power supply of pilot relay J disconnect user, the automatic closing again of delaying time after 6 seconds if fault is not got rid of, is then carried out the power supply of disconnect user for the second time again;
Four, IC-card read-write control, electric weight main memory circuit principle of work is referring to Fig. 7: by the P00 of single-chip microcomputer 8051, P01, P02, the P03 pin respectively with the gating end of string type electrically alterable storage 93C46, clock terminal, the data input, output terminal joins, the IC-card of ciphering type serial electrically rewritable storage, its input and output bi-directional data end, reset terminal, clock address end, check the fusing control end, the programming Control end respectively with the P03 of single-chip microcomputer 8051, P04, P05, P06, the P07 pin joins, the every kilowatt-hour of using of user, single-chip microcomputer subtracts 1 with the internal memory electric weight, control relay J disconnect user power supply when the internal memory electric weight is zero, thus realize that IC-card is read and write and the control of electric weight internal memory; IC-card all is designed to positive and negative order with the contact (bar) of deck and connects, so realize that plug-in card is regardless of both forward and reverse directions, use is more convenient.
Advantage of the present utility model:
1. have machinery, the two demonstration of electronic counting closed loop synchronous workings, measurement data is accurate, the data reservation is reliable and stable, and data are also very reliable under interference such as strong thunderbolt;
2.IC the card plug-in card is regardless of both forward and reverse directions, the data input and output are more accurate, reliable, safe, easy to use;
3. but antioverloading, tax evasion electricity reduce electric energy loss, save the power supply department managing human, improve robotization, the intelligent level of watt-hour meter.
Be accompanying drawing of the present utility model below:
Fig. 1 is a circuit structure block diagram of the present utility model;
Fig. 2 is current-voltage sampling of the present utility model, Power Conversion and voltage frequency conversioning circuit structural representation;
Fig. 3 is the two closed control circuit structural representations that show of machinery of the present utility model, electronic counting, wherein: 1. mechanical counter, 2. carry gear;
Fig. 4 is a mechanical counter structural representation of the present utility model,
Fig. 4-the 1st, the A-A diagrammatic cross-section of Fig. 4,
Fig. 4-the 2nd, the B of Fig. 4 is to synoptic diagram;
Fig. 5 is a carry gear structure synoptic diagram of the present utility model,
Fig. 5-the 1st, the A-A diagrammatic cross-section of Fig. 5;
Fig. 6 is antioverloading of the present utility model, the sampling of tax evasion electric signal and user's power control circuit structural representation;
Fig. 7 is IC-card read-write of the present utility model and user's electric energy control electrical block diagram;
Fig. 8 is an IC-card deck wiring schematic diagram of the present utility model;
Fig. 9 is an IC-card chip wiring schematic diagram of the present utility model.
Claims (3)
1. machinery, the two closed-loop control electronic type IC-card watt-hour meter that show of electronic counting, this watt-hour meter comprises that with single-chip microcomputer (8051) be center and current-voltage sampling, Power Conversion and voltage frequency conversioning circuit, machinery, the two closed control circuits that show of electronic counting, antioverloading, tax evasion electric signal sample circuit and user's power control circuit, the IC-card read-write, the electric weight memory control circuit composition that links is characterized in that: by operational amplifier (A), current transformer (B) connects Power Conversion multiplier (AD534), (T0) pin of voltage to frequency converter (LM331) and single-chip microcomputer (8051) composition current-voltage sampling that links, Power Conversion and voltage frequency conversioning circuit; (the P10 of single-chip microcomputer (8051), P11) two lines connect bridge-type pulse amplification buffer circuit (T1, T2, T3, T4), stepper motor (M), motor is by axle connection mechanical counter (1), be contained in the infrared transmitting tube (D) on carry gear (2) both sides of counter support, infrared receiving tube (T5) constitutes the photoelectricity coupled circuit, infrared receiving tube (T5) emitter resistance connects phase inverter (G1) and joins with (INP1) pin of single-chip microcomputer (8051), (the RXD of single-chip microcomputer (8051), TXD) the synchronous output data of pin serial, receive the parallel output integration block (MC74HC164) of serial input again and line output sending and receiving light show the corresponding pin of charactron (E40301), (P14 of single-chip microcomputer (8051), P15, P16, P17) meet (T6, T7, T8, T9) machinery is formed in control (E40301), the two closed control circuits that show of electronic counting; Magnetic ring coil (L), operational amplifier (A2), resistance (R4, R5, R6), electric capacity (C2) amplifies, electric capacity (C3, C4), diode (D3, D4), resistance (R7) rectifying and wave-filtering and resistance (R1, R2), electric capacity (C1), variable resistor (W), resistance (R3) is all received signal shaping phase inverter (G) through diode (D2) and is joined triode (T2) with (INT0) pin of single-chip microcomputer (8051) again, loudspeaker (Y), triode (T3), light emitting diode (LED), triode (T1), relay (J) connects and (15 of single-chip microcomputer (8051) again, 16,17) the pin composition antioverloading that joins, tax evasion electricity and user's power control circuit; (P00, P01, P02, P03) pin of single-chip microcomputer (8051) joins with gating end, clock terminal, the data input/output terminal of string type electrically alterable storage (93C46) respectively, the input and output bi-directional data end of IC-card, reset terminal, clock address end, check fusing control end, programming Control end and join with (P03, P04, P05, P06, P07) pin of single-chip microcomputer (8051) respectively and form IC-card read-write, electric weight memory control circuit.
2. machinery according to claim 1, the two closed-loop control electronic type IC-card watt-hour meter that show of electronic counting, it is characterized in that a upward threading position gear (2) of mechanical counter (1), form the photoelectricity coupled circuit at carry gear (2) both sides dress infrared transmitting tube (D) and infrared receiving tube (T5), have three photoelectricity coupling apertures that are mutually 120 degree angles on the outward flange of carry gear (2).
3. machinery according to claim 1, the two closed-loop control electronic type IC-card watt-hour meter that show of electronic counting, it is characterized in that IC-card adopts ciphering type serial electrically alterable storage, the IC-card chip is contained on the printed circuit board (PCB), there is the same and corresponding with the deck shell fragment contact point of spacing on the circuit board two sides, bar, each pin (1～8) is pressed and opposite order (8 '～1 ') contacting of pros and cons on circuit board, the wiring of IC-card deck is to arrange contact flat spring (1～8) on the deck and down row's contact flat spring (8 '～1 ') is corresponding, receives (the P03 of single-chip microcomputer (8051) after linking with going between, P04, P05, P06, P07) pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99218080 CN2386445Y (en) | 1999-07-28 | 1999-07-28 | Electric IC card electricity meter controlled by mechanical and electronic counting double-display closed-loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99218080 CN2386445Y (en) | 1999-07-28 | 1999-07-28 | Electric IC card electricity meter controlled by mechanical and electronic counting double-display closed-loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2386445Y true CN2386445Y (en) | 2000-07-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99218080 Expired - Fee Related CN2386445Y (en) | 1999-07-28 | 1999-07-28 | Electric IC card electricity meter controlled by mechanical and electronic counting double-display closed-loop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2386445Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064820A (en) * | 2017-06-18 | 2017-08-18 | 昆明理工大学 | It is a kind of directly to see the low cost integration hourglass of the life of storage battery |
| CN107102185A (en) * | 2017-06-18 | 2017-08-29 | 昆明理工大学 | A kind of low cost integration hourglass kilowatt-hour meter |
-
1999
- 1999-07-28 CN CN 99218080 patent/CN2386445Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064820A (en) * | 2017-06-18 | 2017-08-18 | 昆明理工大学 | It is a kind of directly to see the low cost integration hourglass of the life of storage battery |
| CN107102185A (en) * | 2017-06-18 | 2017-08-29 | 昆明理工大学 | A kind of low cost integration hourglass kilowatt-hour meter |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |