CN203311517U - IC card prepayment watt hour meter - Google Patents
IC card prepayment watt hour meter Download PDFInfo
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- CN203311517U CN203311517U CN2013202841568U CN201320284156U CN203311517U CN 203311517 U CN203311517 U CN 203311517U CN 2013202841568 U CN2013202841568 U CN 2013202841568U CN 201320284156 U CN201320284156 U CN 201320284156U CN 203311517 U CN203311517 U CN 203311517U
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- microprocessor
- card
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- electric quantity
- hour meter
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Abstract
The utility model relates to an IC card prepayment watt hour meter. The IC card prepayment watt hour meter comprises a microprocessor, an electric quantity acquisition unit, a display screen, an IC card port, a power source, an alarm unit and a trip unit. The microprocessor is a kernel component, the electric quantity acquisition unit, the display screen, the trip unit and the IC card port are connected with the microprocessor, and the power source supplies electricity to the microprocessor. Data in an IC card are transmitted to the microprocessor through the IC card port, the electric quantity acquisition unit sends electric quantity information to the microprocessor, and the electric quantity information is displayed through a displayer after being processed by the microprocessor. The microprocessor sends alarm signals to the alarm unit. The IC card prepayment watt hour meter has the advantages that due to the fact that a single chip microcomputer is used as the microprocessor, the cost of the watt hour meter is lowered, the alarm unit can achieve early warning in advance, a user can be reminded to pay in time, and normal electricity utilization can not be affected; when the conditions of short circuit and electric leakage happen, the trip unit is used for achieving timely tripping so that accidents can be avoided, and meanwhile, in times of arrearage, the trip unit can be powered down automatically.
Description
Technical field
The utility model relates to a kind of electric energy metrical charging device, relates in particular to a kind of IC-card pre payment watthour meter.
Background technology
As the meter specially of measuring electric energy, watt-hour meter has been born more than 100 year.In the meantime, along with electric system, allly take electric energy and be the development of the industry of power, the structure of watt-hour meter and performance have experienced the process of continuous renewal, optimized development.The IC-card pre payment watthour meter is the electric energy metrical charging device that the IC-card technology is combined with computer technology.This table has not only been realized the electronization of charge, but also has changed the situation of charging after first electricity consumption, and the expense of stopping is in arrears with and leakage, guarantees reliability and the security of sale and work silver process, makes whole process among security control.And there is the drawback of stopping power supply when expense exhausts in existing IC-card ammeter at once, there is no prior warning function, can bring certain inconvenience to the user.
Summary of the invention
For overcoming the deficiencies in the prior art, the purpose of this utility model is to provide a kind of IC-card pre payment watthour meter, can give warning in advance, and automatic trip.
For achieving the above object, the utility model is achieved through the following technical solutions:
A kind of IC-card pre payment watthour meter, comprise microprocessor, electric quantity acquisition unit, display screen, IC-card interface, power supply, alarm unit, trip unit, microprocessor is core component, electric quantity acquisition unit, display screen, trip unit, IC-card interface are connected with microprocessor, power supply is microprocessor power supply, in IC-card, data are delivered to microprocessor by the IC-card interface, the electric quantity acquisition unit sends to information about power in microprocessor, and information about power shows by display after microprocessor processes; Microprocessor sends to alarm unit by alerting signal.
Described trip unit comprises resistance, transistor, relay, and resistance one end is connected with microprocessor, and the other end is connected with transistorized base stage, transistorized grounded emitter, coil one end of collector connecting relay, another termination power of coil, normally closed contact connects electric power system.
Described microprocessor is single-chip microcomputer.
Compared with prior art, the beneficial effects of the utility model are:
Utilize single-chip microcomputer as microprocessor, to reduce the cost of watt-hour meter, alarm unit can shift to an earlier date pre-alarm, and reminding user is paid dues in time, does not affect normal electricity consumption; While short circuit, electric leakage situation occurring, avoid meeting accident by trip unit tripping operation in time, simultaneously, when arrearage, but the trip unit auto-breaking, until the expense polishing.
The accompanying drawing explanation
Fig. 1 is structured flowchart of the present utility model.
Fig. 2 is the trip unit structural representation.
Embodiment
Below in conjunction with Figure of description, the utility model is described in detail, but should be noted that enforcement of the present utility model is not limited to following embodiment.
See Fig. 1, Fig. 2, a kind of IC-card pre payment watthour meter, comprise microprocessor, electric quantity acquisition unit, display screen, IC-card interface, power supply, alarm unit, trip unit, microprocessor is core component, electric quantity acquisition unit, display screen, trip unit, IC-card interface are connected with microprocessor, power supply is microprocessor power supply, in IC-card, data are delivered to microprocessor by the IC-card interface, the electric quantity acquisition unit sends to information about power in microprocessor, and information about power shows by display after microprocessor processes; Microprocessor sends to alarm unit by alerting signal.
Described trip unit comprises resistance, transistor, relay, and resistance one end is connected with microprocessor, and the other end is connected with transistorized base stage, transistorized grounded emitter, coil one end of collector connecting relay, another termination power of coil, normally closed contact connects electric power system.
Described microprocessor is single-chip microcomputer.
Embodiment:
The user will insert with the IC-card of own purchase of electricity the draw-in groove of ammeter, under the control of microprocessor, electric weight during ammeter will block is read, in write memory after dump energy stack in table, and can be automatically the information such as state of current residual electric weight or remaining sum, table be returned and write in IC-card, inquire about for management system for selling power.
The customer power supply control circuit is for controlling user power utilization and stopping power supply.When the dump energy of user's IC-card pre payment watthour meter not yet reached the tripping operation limit value, this circuit was controlled power switch to customer power supply; When user's dump energy reached the tripping operation limit value, this circuit was controlled the power switch disconnection, stops to customer power supply.When user's dump energy reaches the tripping operation limit value, single-chip microcomputer output high level, through resistance, be added to transistorized base stage, make transistor turns, the relay line is surrounded by electric current and flows through, and the relay adhesive makes the normally closed contact of relay disconnect, thereby feed circuit are disconnected, stop to customer power supply.When user's dump energy not yet reached the tripping operation limit value, the single-chip microcomputer output low level, made the transistor cut-off, and relay J line bag does not have electric current to flow through, not adhesive of relay, and normally closed contact is connected, and the feed circuit closure, to customer power supply.For preventing that the fire that short circuit causes from occurring, the built-in earth leakage protection of electric energy meter is prevented short circuit trip protection device (current limit 20A).
The utility model utilizes single-chip microcomputer as microprocessor, to reduce the cost of watt-hour meter, and alarm unit can shift to an earlier date pre-alarm, and reminding user is paid dues in time, does not affect normal electricity consumption; While short circuit, electric leakage situation occurring, avoid meeting accident by trip unit tripping operation in time, simultaneously, when arrearage, but the trip unit auto-breaking, until the expense polishing.
Claims (3)
1. IC-card pre payment watthour meter, it is characterized in that, comprise microprocessor, electric quantity acquisition unit, display screen, IC-card interface, power supply, alarm unit, trip unit, microprocessor is core component, electric quantity acquisition unit, display screen, trip unit, IC-card interface are connected with microprocessor, power supply is microprocessor power supply, in IC-card, data are delivered to microprocessor by the IC-card interface, the electric quantity acquisition unit sends to information about power in microprocessor, and information about power shows by display after microprocessor processes; Microprocessor sends to alarm unit by alerting signal.
2. a kind of IC-card pre payment watthour meter according to claim 1, it is characterized in that, described trip unit comprises resistance, transistor, relay, resistance one end is connected with microprocessor, the other end is connected with transistorized base stage, transistorized grounded emitter, coil one end of collector connecting relay, another termination power of coil, normally closed contact connects electric power system.
3. a kind of IC-card pre payment watthour meter according to claim 1, is characterized in that, described microprocessor is single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202841568U CN203311517U (en) | 2013-05-23 | 2013-05-23 | IC card prepayment watt hour meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202841568U CN203311517U (en) | 2013-05-23 | 2013-05-23 | IC card prepayment watt hour meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203311517U true CN203311517U (en) | 2013-11-27 |
Family
ID=49617708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202841568U Expired - Fee Related CN203311517U (en) | 2013-05-23 | 2013-05-23 | IC card prepayment watt hour meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203311517U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787174A (en) * | 2016-11-29 | 2017-05-31 | 国网山东省电力公司济南供电公司 | A kind of electricity charge automatic power transmission system after continuing to pay dues |
| CN107393163A (en) * | 2017-07-07 | 2017-11-24 | 溧阳市华鹏电力仪表有限公司 | A kind of fire-proof and theft-proof ammeter |
| CN108154664A (en) * | 2016-12-05 | 2018-06-12 | 防城港市港口区天平电子科技有限公司 | A kind of intelligent water ammeter manages system |
-
2013
- 2013-05-23 CN CN2013202841568U patent/CN203311517U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787174A (en) * | 2016-11-29 | 2017-05-31 | 国网山东省电力公司济南供电公司 | A kind of electricity charge automatic power transmission system after continuing to pay dues |
| CN108154664A (en) * | 2016-12-05 | 2018-06-12 | 防城港市港口区天平电子科技有限公司 | A kind of intelligent water ammeter manages system |
| CN107393163A (en) * | 2017-07-07 | 2017-11-24 | 溧阳市华鹏电力仪表有限公司 | A kind of fire-proof and theft-proof ammeter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20160523 |