CN201035740Y - Prepaid electric meter device - Google Patents
Prepaid electric meter device Download PDFInfo
- Publication number
- CN201035740Y CN201035740Y CNU2007200950298U CN200720095029U CN201035740Y CN 201035740 Y CN201035740 Y CN 201035740Y CN U2007200950298 U CNU2007200950298 U CN U2007200950298U CN 200720095029 U CN200720095029 U CN 200720095029U CN 201035740 Y CN201035740 Y CN 201035740Y
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- watthour meter
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- pre payment
- payment watthour
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Abstract
The utility model discloses a prepaying electrical meter device, and comprises a prepaying electrical meter, an interface converter, a computer management system, a bus communication line and a communication line. The prepaying electrical meter has a plurality of 485 communication interfaces, and the communication protocol and safety protection functions; the interface converter is 485-232 communication interface converter; the prepaying electrical meter is connected with the 485-232 communication interface converter through the 485 communication bus, and then connected with the computer management system through the 232 communications line. The utility model has the advantages that all the electric supply meters can realize electric quantity freezing and storage at the same time, and thereby the power administration section can accurately performs the statistical evaluation of the power circuit loss, the electricity utilization managed cost is saved, and the work efficiency is improved. And simultaneously, a wired monitoring unit is added in the electrical meter device to monitor the input and output electric current, effectively plays the protective effect, and thereby the electricity utilization of the users are safe.
Description
Technical field
The present invention relates to a kind of watt-hour meter, particularly relate to a kind of pre payment watthour meter device with communication timing meter reading function and function of safety protection.
Background technology
The pre payment watthour meter that uses mainly realizes purchasing earlier the electricity function of electricity consumption more at present, the user holds and purchases electricity card or other and purchase dielectric after purchase the electrical network point and purchase electricity, to purchase electricity card or other purchases dielectric and inserts ammeter bayonet socket or the corresponding interface, to newly purchase electric weight input ammeter, simultaneously power information in the ammeter is returned to write and purchased electricity card or other are purchased on the dielectric, when purchasing electricity next time power information is taken back to management system for selling power, the data confession management system of returning is carried out tabulate statistics, the data analysis of the line correlation of going forward side by side.
Owing to be the advanced charge power mode, as long as have dump energy (dump energy=accumulative total is purchased electric weight-accumulative total power consumption) in the ammeter, the user just can continue electricity consumption, usually each user's electricity consumption situation and to purchase the electricity custom different, cause the user to purchase the uncertain of electricity time and purchase the uncertainty in the electricity time interval, therefore, management of power use department is when statistics user power utilization summary information, be when purchasing electricity by the user, the user hands purchases the electricity card or other purchase the power information that dielectric is taken back, and this power information is the power information of each user in its particular time interval.Electricity consumption data, the computing electric line loss of common every month statistical dependence of management of power use department, and with this plan of being correlated with, supervision.And the untimely and inaccurate reason that provides owing to data causes the final statistics of management of power use department also inaccurate.
Also having a kind of mode is that management of power use department organizes manual metering team directly to check meter to the user place in every month, this method has strengthened management of power use cost on the one hand, work efficiency is also low on the other hand, suppose each person of checking meter 1000 families of checking meter, in the cycle of checking meter, time of checking meter the earliest and checking meter at last may be at a distance of 10 days even longer, and copy and accept and the process of data typing in also artificial mistake might appear, can not reach science, the accurately requirement of management equally.
On the other hand; at present, residential electricity consumption is mainly single phase power supply, and three wiring are arranged; phase line wherein;, the neutral line and a protective ground line are sometimes, because workmen's the error or the mistake of wiring voluntarily; the neutral line and protective ground line connect instead; in normal power supply, can not detect with common test pencil, nor can influence electricity consumption.But such wiring has very big hidden danger, when certain reason causes the neutral line or protective ground line to open circuit, the outer casing electrification situation of oneself or next door consumer will take place, and user's personal safety is brought danger or damages.
Summary of the invention
Technical problem to be solved in the utility model is, overcome the shortcoming of prior art, provide a kind of avoid wiring error and can be to the electricity consumption data in real time, accurately automatically gather, electrical network electricity consumption situation is carried out effective monitoring, and has the pre payment watthour meter device of communication timing meter reading function.
The technical scheme that the utility model adopted is: the pre payment watthour meter device comprises: pre payment watthour meter, interface convertor, computer management system, communication bus and connection; Described pre payment watthour meter is a plurality of 485 communication interfaces, communications protocol and function of safety protection of having; Described interface convertor is the 485-232 communication interface; Described pre payment watthour meter is connected the back by 485 communication buses and is connected with computer management system by 232 connections with the 485-232 Communication Interface Converter.
Between ammeter and the 485-232 Communication Interface Converter data concentrator is set, described data concentrator is connected with 485 communication buses.
Described pre payment watthour meter comprises: processor, electric energy metrical unit, 485 interface units, display unit, storage unit, IC-card read write line, isolating switch and wiring monitoring means; Described processor is connected with each unit respectively.
Be wound with 1000 circle coils on the mutual inductor air core in the described wiring detecting unit, pass the phase line and the neutral line in the ammeter in described mutual inductor hole, described mutual inductor output sensitivity is 20mA.
The model of described processor adopting integrated circuit is PIC16F73, it is ADE775 that described electric energy metrical unit adopts the model of integrated circuit, it is 75LS184 that described 485 interface units adopt the model of integrated circuit, it is 24LC01B that described storage unit adopts the model of integrated circuit, and it is LED206 that described display unit adopts the model of 4 charactrons.
The beneficial effects of the utility model are: adopt computer management system, the moment that can set, data layout with broadcasting sends the electric weight freeze command, each electric supply meter can be finished electric weight in the moment much at one and freezes and store like this, then with this data passback computer management system, make management of power use department can carry out the statistical computation of power line damage etc. exactly, not only in time eliminate metering fault, also saved management of power use cost, increased work efficiency.On the other hand, promptly can not realize regularly freezing function of electric weight, reduce the cost of ammeter yet because every ammeter does not need to increase real-time clock module.Owing in the watt-hour meter device, increased the electric current of wiring monitoring means in order to monitoring inlet wire and outlet, effectively play the effect of protection, make user power utilization safer.
Description of drawings
Fig. 1 is the utility model pre payment watthour meter device;
Fig. 2 is the utility model pre payment watthour meter composition frame chart;
Fig. 3 is the utility model zero-sequence transformer figure;
Fig. 4 is the utility model wiring monitoring means circuit theory diagrams;
Fig. 5 is the utility model pre payment watthour meter circuit theory diagrams.
Among the figure:
1. ammeter 2.485 communication buses 3.232 connections
4.485-232 communication translation interface 5. computer management systems
6. data concentrator 7. processors 8. electric energy metrical unit
9.485 interface unit 10. display units 11. storage unit
12.IC card reader 13. isolating switchs 14. wiring monitoring means
15. air core 16. mutual inductor coils
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
As shown in Figure 1, computer management system 5 is a main frame, and each ammeter 1 is a slave, the information that order that computer management system 5 is sent and reception ammeter 1 return, by 485-232 Communication Interface Converter 4, realize the data communication of computer management system 5 and ammeter 1.
Computer management system adopts serial 232 connections 3, and ammeter adopts standard 485 communication buses 2, and level conversion is carried out by 485-232 communication translation interface 4 in the centre.If ammeter quantity is many, can increase data concentrator 6, concentrator 6 is finished the effect of communication relaying, pre-paying kilowatt-hour meter 1 data that can also storage of collected arrive.
As Fig. 2 and shown in Figure 5, processor 7 adopts the PIC16F73 chip U202 of MICROCHIP company to finish data processing, outage control, data communication, functions such as IC-card read-write.Electric energy metrical unit 8 adopts the ADI ADE775 of company chip U102 and peripheral circuits, according to the pulse signal of the situation output respective frequencies of power consumption, delivers to processor 7 through the O102 light-coupled isolation and carries out step-by-step counting, realizes the electric energy metrical function.485 interface units 9 adopt the TI 75LS184 of company chip U302 and peripheral circuits, and the data message of transmitting-receiving is through O301, O302, the O303 light-coupled isolation is connected to processor 7, after processor 7 receives data from 485 interface units 9,, implement relevant instruction through protocal analysis.When processor 7 receive electric weight freeze the instruction after, current power information is deposited among the storage chip 24LC01B U203 of storage unit 11; After processor 7 receives the electric weight reading command, the data in the storage unit 11 are sent on 485 communication buses 2 through 485 interface units 9.Display unit 10 adopts 4 charactron LED206, adopts the mode of dynamic scan to show, when simplifying circuit, has also reduced power consumption, and display unit 10 can show information about power and fault alarm information.Storage unit 11 adopts the MICROCHIP 24LC01B of company storage chip, is used for storing electricity information and ammeter running state information.IC-card read write line 12 adopts the IC-card seat that meets international standard ISO7816, can reliably read and write the IC data, and reading-writing life-span is 100,000 times, and the data of read-write are handled by processor U202.Isolating switch 13 can be carried out the action of connecting circuit or open-circuit line according to the instruction of processor 7, control user's electricity consumption.
Fig. 3 is the utility model zero-sequence transformer figure, as shown in Figure 3, on air core 15 around 1000 circle mutual inductor coils 16, the internal diameter of air core 15 is 12mm, and external diameter is 25mm, highly is 10mm, in the mutual inductor hole, pass the phase line and the neutral line in the ammeter, require current direction opposite.Under correct wiring situation, phase line and neutral current equate, direction is opposite, not output in the mutual inductor coil 16.When the neutral line and protective ground line wiring error appear in ammeter; as: the line that passes in the mutual inductor hole is actual to be phase line and protective ground line; when electricity consumption; have only phase line that electric current is arranged; the protective ground line of ammeter inside does not have electric current; mutual inductor just has output signal, and this design output sensitivity is 20mA.
Fig. 4 is the utility model wiring monitoring means circuit theory diagrams; as shown in Figure 4; mutual inductor output is connected to J202; when wiring error is arranged; the output signal of mutual inductor is through the D207 rectification, after the C218 filtering; export a direct current signal; be added in the base stage of triode Q203 through R227, make the Q203 conducting, the collector output low level signal of Q203; this low level signal is connected to Fig. 5 processor 7; after processor 7 processing, and on the charactron LED206 of display unit 10, show error message, and provide prompting; cut-off breaker is protected user security simultaneously.
The principle of work of pre payment watthour meter with communication timing meter reading function and function of safety protection is as follows: the user will purchase in the electric weight input ammeter 1 by IC read write line 12, purchase and deposit storer 11 in after electric data are handled by processor 7, electric weight shows on display 10 simultaneously, isolating switch 13 is connected and is used electric line, 8 work of electric energy metrical module, the electricity consumption data are handled by processor 7, deposit in the storer 11.After ammeter 1 receives the electric weight freeze command by 485 interfaces 9, treated device 7 is handled, deposit current electricity consumption data in storer 11, after ammeter 1 receives data read command by 485 interfaces 9, the electric weight freezing data in the storer 11 and other data can be passed to 485 communication buses 2 by 485 interfaces 9 with data; For function of safety protection, increase wiring monitoring means 14, the electric current of monitoring inlet wire and outlet, at inlet wire with go out line current and occur feeding back signal to processor 7 when unusual, isolating switch 13 disconnects uses electric line, simultaneously, demonstrate error message on display 10, prompting customer inspection circuit is also changed, and plays the security protection effect.
It is worthy of note; protection domain of the present utility model is not limited to above-mentioned instantiation mode, and according to basic fundamental design of the present utility model, those of ordinary skills need not through creative work; the embodiment that can associate all belongs to protection domain of the present utility model.
Claims (5)
1. a pre payment watthour meter device comprises: pre payment watthour meter (1), interface convertor (4), computer management system (5), communication bus (2) and connection (3); It is characterized in that: described pre payment watthour meter (1) is a plurality of 485 communication interfaces, communications protocol and function of safety protection of having; Described interface convertor (4) is the 485-232 communication interface; Described pre payment watthour meter (1) is connected the back by 485 communication buses (2) and is connected with computer management system (5) by 232 connections (3) with 485-232 Communication Interface Converter (4).
2. pre payment watthour meter device according to claim 1 is characterized in that: between ammeter (1) and the 485-232 Communication Interface Converter (4) data concentrator (6) is set, described data concentrator (6) is connected with 485 communication buses (2).
3. pre payment watthour meter device according to claim 1 is characterized in that: described pre payment watthour meter (1) comprising: processor (7), electric energy metrical unit (8), 485 interface units (9), display unit (10), storage unit (11), IC-card read write line (12), isolating switch (13) and wiring monitoring means (14); Described processor (7) is connected with each unit respectively.
4. pre payment watthour meter device according to claim 3, it is characterized in that: be wound with 1000 circle coils (16) on the mutual inductor air core (15) in the described wiring detecting unit (14), pass the phase line and the neutral line in the ammeter in described mutual inductor hole, described mutual inductor output sensitivity is 20mA.
5. pre payment watthour meter device according to claim 3, it is characterized in that: it is PIC16F73 that described processor (7) adopts the model of integrated circuit, it is ADE775 that described electric energy metrical unit (8) adopts the model of integrated circuit, it is 75LS184 that described 485 interface units (9) adopt the model of integrated circuit, it is 24LC01B that described storage unit (11) adopts the model of integrated circuit, and it is LED206 that described display unit (10) adopts the model of 4 charactrons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200950298U CN201035740Y (en) | 2007-01-22 | 2007-01-22 | Prepaid electric meter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200950298U CN201035740Y (en) | 2007-01-22 | 2007-01-22 | Prepaid electric meter device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201035740Y true CN201035740Y (en) | 2008-03-12 |
Family
ID=39196631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200950298U Expired - Fee Related CN201035740Y (en) | 2007-01-22 | 2007-01-22 | Prepaid electric meter device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201035740Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102647636A (en) * | 2012-04-17 | 2012-08-22 | 广东九联科技股份有限公司 | Set-top box AV (Audio Video) connection error prompting method |
| CN104113136A (en) * | 2014-06-20 | 2014-10-22 | 江苏省电力公司江阴市供电公司 | Serial transmission apparatus and transmission method of electric energy system |
| CN106128071A (en) * | 2016-08-19 | 2016-11-16 | 武汉精伦电气有限公司 | The electricity consumption charging method of electricity consumption charge system and correspondence is irrigate in a kind of agriculture irrigation and drainage |
-
2007
- 2007-01-22 CN CNU2007200950298U patent/CN201035740Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102647636A (en) * | 2012-04-17 | 2012-08-22 | 广东九联科技股份有限公司 | Set-top box AV (Audio Video) connection error prompting method |
| CN104113136A (en) * | 2014-06-20 | 2014-10-22 | 江苏省电力公司江阴市供电公司 | Serial transmission apparatus and transmission method of electric energy system |
| CN106128071A (en) * | 2016-08-19 | 2016-11-16 | 武汉精伦电气有限公司 | The electricity consumption charging method of electricity consumption charge system and correspondence is irrigate in a kind of agriculture irrigation and drainage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080312 Termination date: 20110122 |