CN2250525Y - Clamping mark wheet type eldctromechanical integrate electric clamp power meter - Google Patents

Abstract

The utility model relates to a clamping mark wheel type electromechanical integrate electric clamp power meter, wherein, the highest bit of a register which is finally output by an electric energy meter is provided with a clamping mark wheel provided with a movable joint; a static contact of the movable joint is installed on the clamping mark wheel; the clamping mark wheel is connect with a clamping advance motor; a movable contact of the movable joint is installed on the highest bit of the register; a stepping motor is connected with a central processing unit; the direct current power supply and an electric clamping socket are respectively connected with the central processing unit; the input end of the direct current power supply is connected with a linkage joint of the electric clamping socket; the linkage joint of the electric clamping socket is connected with the alternating current power supply; the static contact of the movable joint is connected with a relay; a normally closed contact is connected with a power cord.

Description

The wheeled electromechanical integration electricity of card mark card electric energy meter

The utility model relates to a kind of pre-payment electricity card electric energy meter of electromechanical integration.

Existing electromechanical prepayment electricity card electric energy meter all is by installing the photoimpact device additional or hall device forms in the aluminium dish rotating shaft of former induction type electric energy meter.Revolution sends one or several pulse, by scm application system received pulse and counting, comes accumulative total user's power consumption according to the electric energy meter constant.Deduct the user that the key-type electricity blocks or visiting card type electricity card transmits then and purchase electric weight, realize the purpose of buying electricity, back electricity consumption earlier, using up outage.

This method for designing requires scm application system to move continuously, and power supply power consumption is big, Anti-interference Design requires a series of problems such as high, that measuring accuracy is difficult to guarantee, the MTBF value is on the low side thereby bring.For addressing this problem, adopt the low-power consumption chip usually, strengthen transformer, stabilized voltage supply design margin, increase the measure of the anti-interference grade of hardware and software.So not only cost improves, and technological requirement is more complicated, and can't fundamentally solve measuring accuracy and MTBF value problem on the low side, is difficult to large scale application.

The purpose of this utility model provides " the card mark wheel " device on a kind of final output-meter scale (being commonly called as " word car ") of induction type electric energy meter.It can avoid the continuous operation (every month needs energising work 1～2 minute) of scm application system, and task becomes very simple, as long as pulse is carried out in duplicate reading-affirmation-deciphering-output, adopt repeatedly the way of reading, duplicate acknowledgment, can avoid the bursty interference of electrical network in 1～2 minute of scm application system work.Power supply power consumption is big, Anti-interference Design requires a series of problems such as high, that measuring accuracy is difficult to guarantee, the MTBF value is on the low side thereby fundamentally solve.

The purpose of this utility model is achieved in that the highest " the card mark wheel " that a band movable contact is arranged at the final output-register of former induction type electric energy meter.The static contact of movable contact is installed on the card mark wheel, and card mark wheel is by step motor drive.The moving contact of movable contact is installed in, and the position of this moving contact will be driven by register step by step with the increase of user power utilization amount.Stepper motor is connected with central processing unit, is controlled by central processing unit.The output terminal of the output terminal of direct supply and electricity card socket is linked central processing unit respectively, and the input end of direct supply is linked the interlock contact of electricity card socket, and the interlock contact of this electricity card socket is connected with AC power.The static contact of movable contact is connected to a relay.In addition, a normally closed contact is connected to power lead, and is controlled by relay.The highest one of register can be hundred.After the user buys the electricity card from power supply administration, the electricity card is inserted the electricity card socket of the utility model pre-payment electricity card electric energy meter, drive the interlock junction closure of electricity card socket simultaneously, power on for whole scm application system, central processing unit reads in from the electricity card purchases electric weight, through repeatedly repeating to read in, relatively affirmation, data decryption, send corresponding pulse to stepper motor, driver card mark wheel is in armature contact and purchases the corresponding position of electric weight.After pulling out card, the interlock contact of electricity card socket disconnects, and makes whole scm application system outage.At this moment the user can be as being unkitted pre-payment electricity card electric energy meter, normal electricity consumption.Purchase electric weight up to the user power utilization amount with the user and equate, watt-hour meter dial drives register, drives card mark wheel moving contact, makes card mark wheel junction closure, and the output relay contact disconnects, and cuts off user's power supply.Realize the purpose of " buy afterwards earlier and use, use up outage ".

Major advantage of the present utility model is: it all is to finish by obtaining measuring the very high former induction type electric energy meter self of approval, functional reliability that the power consumption of whole pre-payment electricity card electric energy meter adds up, reduces, uses up outage, and the accuracy of metering and the reliability of work are conclusive.The only energising in 1～2 minute of plug-in card of whole scm application system, 1～2 month just plug-in card once, average power is about the 0.1mw magnitude, year power consumption only 10 ^-3KWH.Power supply power consumption can be ignored substantially.Most times of scm application system are in off-position, do not have anti-interference problem.And in conduction time,, can exchange high anti-interfering performance for to reduce system works speed because task is simple at plug-in card.Duplicate reading repeatedly from the electricity card, through relatively, 30 times reading is in full accord, just is confirmed to be noiseless reading in.So just avoided the common bursty interference of electrical network.

Further specify the utility model card below in conjunction with accompanying drawing and mark wheeled electromechanical integration electricity card electric energy meter.

Fig. 1 is the schematic diagram that the utility model card is marked wheeled electromechanical integration electricity card electric energy meter scm application system;

Fig. 2 is the front view of the utility model electricity card electric energy meter mechanical driving part;

Fig. 3 is the vertical view of the utility model electricity card electric energy meter mechanical driving part;

Referring to Fig. 1 and 2, among Fig. 2, at the highest card mark wheel 23 that a band movable contact is housed of the final output-register of former induction type electric energy meter.The static contact 17 of movable contact is installed in card mark wheel 23, and card mark wheel 23 is linked stepper motor 15, is driven by this stepper motor 15.Moving contact 18 is installed in the highest of register, and for example hundred, its position will be driven by register step by step with the increase of user power utilization amount.Among Fig. 1, stepper motor 15 is connected with central processing unit 11.The output terminal of the output terminal of direct supply 12 and electricity card socket 13 is linked central processing unit 11 respectively, and the input end of direct supply 12 is linked the interlock contact 14 of electricity card socket, and the interlock contact 14 of this electricity card socket is connected with AC power.The static contact 17 of movable contact is connected to a relay 16.In addition, a normally closed contact 19 is connected to power lead, and by relay 16 controls.The user can insert the electricity card in the socket 13 of accompanying drawing 1 after buying the electricity card from power supply administration, and socket interlock contact 14 is closed simultaneously, powers on to scm application system.Central processing unit 11 reads the user and purchases electric weight from the electricity card, and send corresponding pulse according to purchasing topworks's one stepper motor 15 of electric weight to scm application system, the static contact 17 that drives card mark wheel 23 and contact thereof by the gear train among Fig. 2 22 is looked as a left side and is clockwise rotated, up to purchasing the corresponding position of electric weight, make static contact 17 away from moving contact 18 with the user.Behind 11 pairs of clear cards of electricity card of central processing unit, provide and pull out card signal, the user pulls out card, and deck interlock contact 14 disconnects, and whole scm application system recovers off-position.

During user power utilization, the turbine worm 24 in the rotating shaft of induction electric energy table aluminium dish drives register by gear train 25, is transferred to hundred wheels 26 of register step by step, it is looked by a left side clockwise rotate.And the moving contact 18 that is installed in the movable contact on hundred wheels 26 of register is also close to static contact 17 thereupon.Purchase electric weight when user's accumulative total power consumption with accumulative total and equate that the card mark is taken turns contact static contact 17, moving contact 18 closures, starts the output relay 16 of accompanying drawing 1, its normally closed contact 19 is disconnected, stop to power to the user.Buy electricity earlier thereby finished, back electricity consumption uses up the process of outage.

Because the transmission step by step of word car be the decimal system discrete transmission, the error in dipping that can avoid gear clearance to bring.

Claims (2)

1, a kind of card is marked wheeled electromechanical integration electricity card electric energy meter, comprise register, card mark wheel, and scm application system, it is characterized in that: at the highest card mark wheel (23) that a band movable contact is arranged of the final output-register of electric energy meter, the static contact of movable contact (17) is installed on the card mark wheel (23), card mark wheel (23) is linked stepper motor (15), drive by this stepper motor (15), the moving contact of movable contact (18) is installed in the highest of register, and stepper motor (15) is connected with central processing unit (11).The output terminal of the output terminal of direct supply (12) and electricity card socket (13) is linked central processing unit (11) respectively, and the input end of direct supply (12) is linked the interlock contact (14) of electricity card socket, and the interlock contact (14) of this electricity card socket is connected with AC power.The static contact of movable contact (17) is connected to relay (16), and normally closed contact (19) is connected to power lead.

2. card according to claim 1 is marked wheeled electromechanical integration electricity card electric energy meter, it is characterized in that the most significant digit of degree of counting wheel is hundred wheels (26).

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