CN2401898Y - All electronic digital intelligent type pre-payment electric meter - Google Patents

All electronic digital intelligent type pre-payment electric meter Download PDF

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Publication number
CN2401898Y
CN2401898Y CN 99254356 CN99254356U CN2401898Y CN 2401898 Y CN2401898 Y CN 2401898Y CN 99254356 CN99254356 CN 99254356 CN 99254356 U CN99254356 U CN 99254356U CN 2401898 Y CN2401898 Y CN 2401898Y
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China
Prior art keywords
interface
electronic digital
module
payment
prepayment meter
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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CN 99254356
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Chinese (zh)
Inventor
周毅
张英辰
陈德星
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Individual
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Individual
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Priority to CN 99254356 priority Critical patent/CN2401898Y/en
Application granted granted Critical
Publication of CN2401898Y publication Critical patent/CN2401898Y/en
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Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to an all electronic digital intelligent type pre-payment electric meter, which comprises a main control module, an electric quantity metering module, a user interface, a pre-payment interface, and a power supply controlling and sudden failure processing module, wherein, the main control module is respectively connected with the electric quantity metering module, the user interface, the pre-payment interface, and the power supply controlling and sudden failure processing module; the electric quantity metering comprises a set of A/D switching circuits and a digital signal processing circuit, an output end of the digital signal processing circuit is directly connected with the main control module. Owing to the structure, the utility model can realize the functions of metering and prepaying the cost by digital processing.

Description

The intelligent prepayment meter of all-electronic digital
The utility model relates to a kind of measuring apparatus of electric system, refers to a kind of electric energy meter that is used for the intelligent available IC-card pre-payment of all-electronic digital of electric system metering and management especially.
Electric energy meter is a kind of requisite measuring apparatus in our daily life, and along with the continuous development of science and technology, the electric energy meter product is also constantly updating, so that adapt to the demand in epoch more, convenient user's use.Three generation products has appearred in electric energy meter develop into so far, the electric energy meter that always uses all was the mechanical type ammeter in the past, and it is to carry out electric quantity metering by traditional mechanical electromagnetic induction principle, therefore exists measuring accuracy not high, system stability is poor, the problem that power consumption is higher; And, for the user, use very inconveniently, need regularly check the electric meter, very trouble can not prevent the generation of stealing simultaneously.The electromechanical ammeter has appearred in the demand according to the user, it can adopt the mode of IC-card pre-payment to buy in advance, though can be the user like this provides convenience, but because its movement still prolonged with former mechanical type movement, still use mechanical electromagnetic induction principle to carry out electric quantity metering, so inevitably there are problems such as precision, system stability and power consumption, stealing.Therefore, occurred analog electrical minor ammeter over the past two years again, it has abandoned the mechanical type principle up hill and dale, and uses mimic channel to realize Signal Processing, but mimic channel is easy to be subjected to the interference that labile pulse once in a while dashes when signal Processing, thereby influences its accuracy and reliability.
For addressing the above problem, the purpose of this utility model just is: provide a kind of all-electronic digital intelligent prepayment meter, it adopts totally digitilized technology, degree of accuracy, reliability height, and high conformity, low in energy consumption, the life-span is long; And, its Cipher Strength height, security of system is good, can prevent the generation of stealing; Its available IC-card is finished pre paid functionality, more convenient user.In addition, it can effectively prevent the attack of various fortuitous events to electric energy meter, thereby has guaranteed user's economic interests.
The technical solution of the utility model is achieved in that
The intelligent prepayment meter of a kind of all-electronic digital, its circuit module comprises at least: main control part, electric quantity metering, user interface, pre-payment interface and power supply control, it is characterized in that: it comprises that also one can guarantee the chance failure processing module that system is not disturbed by unexpected electric power, and main control module interconnects with electric quantity metering module, user interface, pre-payment interface, power supply control and chance failure treatment circuit respectively; Comprise one group of A/D change-over circuit and digital signal processing circuit in this electric quantity metering module, the output terminal of digital signal processing circuit directly is connected to main control module.
Described pre-payment interface can be the IC memory card interface.Described pre-payment interface can be IC logical encrypt card.Described pre-payment interface can be the IC intelligent card interface.Described pre-payment interface can be IC radio-frequency card interface.
Described user interface can be digital diode and shows.Described user interface can be liquid crystal display.Described user interface can be voice suggestion.
The intelligent prepayment meter of all-electronic digital provided by the utility model, because it uses the brand-new circuit chip of high integration to realize high-precision electric quantity metering, by the voltage on the circuit, electric current are sampled and digitized processing, realize high precision, high consistance, the long-life; It all adopts digital signal technique to handle, and finally provides the metering output signal, makes circuit low in energy consumption, good reliability; Simultaneously, it has adopted reliable IC-card to realize pre paid functionality, can prevent the generation of stealing electricity phenomenon and provides users with the convenient.In addition, the chance failure processing circuit module that it is advanced has prevented the attack of various fortuitous events to electric energy meter effectively, thereby has guaranteed user's interests.
Below in conjunction with drawings and the specific embodiments the utility model is further described in more detail.
Fig. 1 is an external structure synoptic diagram of the present utility model;
Fig. 2 is a circuit block diagram of the present utility model;
Fig. 3 is the circuit diagram of the utility model signal acquisition process;
Fig. 4 is the circuit diagram of the utility model main modular.
As shown in Figure 1, Fig. 1 is an external structure synoptic diagram of the present utility model.The outside of electric energy meter 1 mainly comprises IC-card socket 10, digital display screen 11 and four binding posts 14.Wherein, the user can insert IC-card IC-card socket 11 and read the IC-card content; Digital display screen 11 is used to show the current electric quantity value; Binding post 1,3 is directly received conduct input on the supply lines 12, and simultaneously, 2,4 of binding posts are received on the subscribers feeder 13 as output.
See also shown in Figure 2ly, Fig. 2 is a circuit block diagram of the present utility model.Circuit of the present utility model mainly comprises following module: main control module 20, electric quantity metering module 21, subscriber interface module 22, pre-payment interface module 23, power supply control module 24 and chance failure processing module 25.Main control and the management of being responsible for total systems of main control module 20, and the calling of each handling procedure; Electric quantity metering module 21 is responsible for voltage, the current signal gathered are handled, calculated and store; Subscriber interface module 22 is used for the electric weight currency is presented on the digital display screen or with voice by digital form to be quoted; Pre-payment interface module 23 can be an IC-card interface in the utility model, be used to read the associative operation that perhaps carries out IC-card in the IC-card; Chance failure processing module 25 is used to handle chance failure, and it has functions such as anti-power down, and can prevent the impact of mishap to electric energy meter.
With reference to shown in Figure 3, the signal acquisition part branch of the utility model electric energy meter is contained in the electric quantity metering module, and its metering output directly links to each other with master control.Its signals collecting is by a sampling thief simulating signal of voltage, electric current on the circuit to be gathered, by the A/D conversion simulating signal is changed into digital signal then, so that carry out digitized processing, and will become frequency signal by the power signal that voltage, current signal calculate, the signal output after will handling at last; After the A/D conversion, also can carry out digital filtering, the unsettled pulse that produces is once in a while filtered, to guarantee the stability of system.
As shown in Figure 4, the fault logic circuits of serial memory circuit, display circuit, anti-power down etc. all links to each other with the microcontroller of main control part respectively, by the master control unified management and call.
The utility model external structure is simple, only needs directly supply lines to be connected with the binding post of off-balancesheet, and through the electric energy meter metering, the other end and user side circuit join and get final product.It is mainly used on the common folk power supply circuit, realizes the function of electricity consumption metering and pre-payment.

Claims (8)

1, the intelligent prepayment meter of a kind of all-electronic digital, its circuit module comprises at least: main control part, electric quantity metering, user interface, pre-payment interface and power supply control, it is characterized in that: it comprises that also one can guarantee the chance failure processing module that system is not disturbed by unexpected electric power, and main control module interconnects with electric quantity metering module, user interface, pre-payment interface, power supply control and chance failure treatment circuit respectively; Comprise one group of A/D change-over circuit and digital signal processing circuit in this electric quantity metering module, the output terminal of digital signal processing circuit directly is connected to main control module.
2, the intelligent prepayment meter of all-electronic digital according to claim 1 is characterized in that: described pre-payment interface can be the IC memory card interface.
3, the intelligent prepayment meter of all-electronic digital according to claim 1 is characterized in that: described pre-payment interface can be IC logical encrypt card.
4, the intelligent prepayment meter of all-electronic digital according to claim 1 is characterized in that: described pre-payment interface can be the IC intelligent card interface.
5, the intelligent prepayment meter of all-electronic digital according to claim 1 is characterized in that: described pre-payment interface can be IC radio-frequency card interface.
6, the intelligent prepayment meter of all-electronic digital according to claim 1 is characterized in that: described user interface can be digital diode and shows.
7, the intelligent prepayment meter of all-electronic digital according to claim 1, it is characterized in that: described user interface can be liquid crystal display.
8, the intelligent prepayment meter of all-electronic digital according to claim 1, it is characterized in that: described user interface can be voice suggestion.
CN 99254356 1999-11-19 1999-11-19 All electronic digital intelligent type pre-payment electric meter Expired - Fee Related CN2401898Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 99254356 CN2401898Y (en) 1999-11-19 1999-11-19 All electronic digital intelligent type pre-payment electric meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 99254356 CN2401898Y (en) 1999-11-19 1999-11-19 All electronic digital intelligent type pre-payment electric meter

Publications (1)

Publication Number Publication Date
CN2401898Y true CN2401898Y (en) 2000-10-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 99254356 Expired - Fee Related CN2401898Y (en) 1999-11-19 1999-11-19 All electronic digital intelligent type pre-payment electric meter

Country Status (1)

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CN (1) CN2401898Y (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100346166C (en) * 2002-01-09 2007-10-31 三菱电机株式会社 Electronic watt-hour meter, error adjusting method, and power calculating circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100346166C (en) * 2002-01-09 2007-10-31 三菱电机株式会社 Electronic watt-hour meter, error adjusting method, and power calculating circuit

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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