CN2437012Y

CN2437012Y - IC card type public electricity metering box

Info

Publication number: CN2437012Y
Application number: CN 00244185
Authority: CN
Inventors: 沈祥机; 游联焰
Original assignee: Individual
Current assignee: You Lianyan
Priority date: 2000-08-03
Filing date: 2000-08-03
Publication date: 2001-06-27
Anticipated expiration: 2010-08-03

Abstract

The utility model discloses an IC card type public electricity metering box, which is composed of a box body, a mechanical electric energy meter, an electronic circuit board, an AC contactor, a socket of an IC card, an LED display, a theft protection electric switch, etc., wherein the electronic circuit board and the AC contactor are arranged outside the mechanical electric energy meter. The utility model is free from the inner space limitation of a traditional mechanical electric energy meter. Then, the use performance of the utility model is improved. Besides, the utility model has the advantages of simple structure and convenient maintenance.

Description

IC-card formula public electricity-using metering box

The utility model relates to a kind of IC-card formula public electricity-using metering box.

At present, the various IC-card formula prepayment meters of Shi Yonging all are to design on the basis of ordinary electric meter on the market, various electron devices all squeeze at the limited box house of original ordinary electric meter as circuit board, central processing unit, display, multi-channel electronic switch etc.The problem of present this class IC-card table ubiquity the following aspects:

1. because the ammeter space is limited, more device can't be installed, particularly powerful control device makes this ammeter can only realize the electric energy tariff of low power consumption, can't satisfy more functions of use.

2. because all electronic elements all are built in ammeter inside, be not easy to installation, maintenance, replacing, all will open ammeter bonnet when keeping in repair at every turn, vibration repeatedly and the dust that enters all easily influence the measuring accuracy of ammeter.

The purpose of this utility model is to overcome the above-mentioned defective of prior art, and a kind of electric energy tariff of big power consumption is provided, and IC-card power consumption metering box for ease of maintenaince.

The technical solution of the utility model is: the utility model is made up of casing, mechanical electric energy meter, A.C. contactor, electronic circuit board, line row, line, power supply wiring row, switch line bank, normal open switch, normally closed switch, light-emitting diode display, IC-card socket, anti-electricity-theft switch, and electronic circuit board is to link to each other with mechanical electric energy meter in external mode with A.C. contactor.

The advantage that the utility model compared with prior art has is:

1. each important composition parts adopts external to link to each other with common mechanical electric energy meter, no longer be subjected to the restriction of original mechanical electric energy meter inner space, so just can adopt powerful vigour part, thereby improve the power of whole batch meter, and can satisfy different functions of use as required.

2. because each element all is external, so for ease of maintenaince, is changing, when keeping in repair some elements, can not touch mechanical electric energy meter, to guarantee the precision of mechanical electric energy meter.

Be described in detail below by embodiment and accompanying drawing:

Fig. 1: structure of the present utility model and connection layout

Fig. 2: the utility model electronic circuit board layout

Fig. 3: the utility model electronic circuit board circuit diagram

The utility model IC-card formula public electricity-using metering box, its structure is made up of casing 10, mechanical electric energy meter 1, A.C. contactor 2, electronic circuit board 3, line row 4, line 5, power supply wiring row 6, switch line bank 7, normal open switch 8, normally closed switch 9, light-emitting diode display 12, IC-card socket 13, the anti-electricity-theft switch 14 of power consumption metering box as shown in Figure 1, 2.

The electronic circuit board circuit is formed (seeing Fig. 3 dashed region) by the six functions piece:

1) host CPU treatment circuit 15 (comprising host CPU CF775, storer 932C46 and corresponding clock oscillator X1);

2) LED display circuit 16 (comprising light-emitting diode display);

3) from 17 (comprising) of CPU protection IC-card socket circuit from CPU 12C508, data switch VO1, VO2;

4) ac contactor control circuit 18 (comprising electronic switching circuit and switch control voltage switching relay J1);

5) switching power circuit 19 (transformer T1, rectification filtering voltage stabilizing circuit);

6) photooptical data collector circuit 20 (comprising photoelectric sampler, data shaping device circuit V4).

As shown in Figure 3: when electronic circuit board is obtained working power, power supply is given transformer T1 step-down output AC18V through the socket P10 of switching power circuit 19 1,2 pin and is given follow-up rectification filtering voltage stabilizing circuit.Because the M34063 dc dc converter IC3 that this machine has adopted Motorola to produce, so these facility have the power supply that adapts to wide region, and have sufficient power supply surplus; In case working power is normal, host CPU treatment circuit 15 is started working, each functional status set is in waiting status, and whether the 6th pin that begins to detect IC1 has the plug-in card signal, if it is behind 0 the plug-in card signal that the 6th pin of IC1 has value, host CPU will go out the Card Reader signal from 10,12,13 human hair combing wastes of IC1, if blocking, this is the validated user card, host CPU is sent power supply from 11 pin and is opened signal to ac contactor control circuit 18, and the switch control voltage after ac contactor control circuit 18 conversions is given A.C. contactor 2 through 4 pin of P10; Send the dump energy shows signal from the 15-25 pin when host CPU send power supply to open signal and give LED display circuit 16, LED shows dump energy.Behind the A.C. contactor 2 controlled voltages, if the user presses switch 8, A.C. contactor is with adhesive, and the user begins electricity consumption.

After the user began electricity consumption, give host CPU with the data of sampling out after shaping carried out computing to photooptical data collector circuit 20 automatically.When electric weight on the IC-card was 0, host CPU sent power-off signal at once and sends from 11 pin, gave A.C. contactor 2 after ac contactor control circuit 18 conversions, disconnected power supply.

At any time detecting on the IC-card socket whether IC-card is arranged from CPU protection IC socket circuit 17; one finds that the IC-card socket has IC-card; immediately IC-card is judged,, sent control signal host CPU is resetted at once if when this IC-card and IC-card socket have difference such as loose contact; allow host CPU interpretation IC-card again; if the IC-card socket has phenomenons such as loose contact, the data of reading are with wrong, and host CPU is thought illegal card; do not allow system works, so just can reach the behavior that prevents from the stealing of IC-card socket.

The principle of work of entire mechanism is as follows: power supply wiring row 6 links to each other with mechanical electric energy meter 1 as complete machine power supply turnover port, through being connected to control A.C. contactor 2 after the metering of electric energy meter, being connected to power supply wiring row 6 by A.C. contactor 2 again and exporting to the user; Electronic circuit board 3 is by the 1st of P10 in the accompanying drawing 3 the, 2 pin link to each other with mechanical electric energy meter 1 by line 5, by obtaining working power after the mechanical ammeter metering, it is legal that IC-card socket 13 in electronic circuit board 3 is inserted with, light-emitting diode display 12 will show dump energy in the IC-card during IC-card of certain electric weight, at this moment the 4th pin of P10 gets in the accompanying drawing 3, when the user presses normal open switch 8, A.C. contactor 2 adhesives, machinery electric energy meter 1 and electronic circuit board 3 are worked simultaneously, electronic circuit board 3 is obtained the data that the photooptical data collection obtains by line row 4 by the 2nd pin of the P2 of accompanying drawing 3 from mechanical electric energy meter 1, then it is calculated, and from IC-card the deduction corresponding electric weight, when the user connects down normally closed switch 9, A.C. contactor 2 discharges, machinery electric energy meter 1 and electronic circuit board 3 also enter halted state simultaneously, and wherein line row is simultaneously also as the line of giving the power supply of photooptical data collector.

Claims

1.IC cassette public electricity-using metering box, be made up of casing (10), mechanical electric energy meter (1), A.C. contactor (2), electronic circuit board (3), line row (4), line (5), power supply wiring row (6), switch line bank (7), normal open switch (8), normally closed switch (9), light-emitting diode display (12), IC-card socket (13), anti-electricity-theft switch (14), it is characterized in that: electronic circuit board (3) is to link to each other with mechanical electric energy meter (1) in external mode with A.C. contactor (2).

2. IC-card formula public electricity-using metering box as claimed in claim 1 is characterized in that: external electronic circuit board can be provided with one or more CPU in (3), and is continuous by the data line of data switch.