CN2341125Y

CN2341125Y - Watermeter with IC card pre-charging unit

Info

Publication number: CN2341125Y
Application number: CN 98212789
Authority: CN
Inventors: 魏志亮
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-04-15
Filing date: 1998-04-15
Publication date: 1999-09-29
Anticipated expiration: 2008-04-15

Abstract

The utility model discloses a watermeter with an IC card pre-charging unit, mainly composed of a power supply control part and a mechanical part. The power supply control part is composed of an IC card data processing circuit IC1, a drive circuit IC2 and a control circuit IC3; the mechanical part is composed of a water meter metering shaft 2, a gear 25, a metering disc 1 with a groove 22, a two-way wheel 3, a gear 4, a stepping motor 11, a water valve 16 which is arranged near a water outlet, a control lever 20, a cam 19, a reversing gear 23, etc. The utility model solves defects in existing watermeters with an IC card pre-charging unit; the metering accuracy can not be affected even under the conditions of a power failure and artificial poweroff. The utility model has the advantages of accurate metering and convenient use, and has the pre-warning function for users.

Description

The IC-card pre-charges water meter

The utility model relates to a kind of IC-card pre-charges water meter, is a kind of water rate measuring apparatus, also is applicable to the prepaid gas meter.

The water meter of existing employing IC-card metering water rate can not be that these water meters have adopted the reason of copying the IC-card ammeter by the reason of practical application mainly.When using ammeter, power supply is out of question, and power supply is a main problem when using IC-card metering water rate.For example have a power failure and just may cut off the water, artificial outage also can influence the accuracy of metering.Because these problems can not get solving, so the IC-card pre-charges water meter can not get promoting the use of so far.

Even a kind of IC-card pre-charges water meter that has a power failure or under the situation of artificial outage, also do not influence the water meter use of depositing of the purpose of this utility model design.

Scheme of the present utility model is as follows: mainly be made up of power control part branch and mechanical part.Power control part divides by IC-card data processing circuit IC1, the driving circuit IC2 that is used for control step motor BM, control circuit IC3, the power control circuit that is connected on magneto M two ends and forms, the negative terminal that consists of at power supply of power control circuit is connected in series a resistance R, gauge tap K1 is connected on the anode of power supply and the centre of motor M, and gauge tap K2 is connected on the other end of motor M and the centre of resistance R.K1 control a point can with b point or with c point break-make, K2 control a ' can and b ' or and c ' some break-make.The mechanical water meter that is connected with mechanical water meter gear case 24 that consists of of mechanical part measures axle 2, and an end of mechanical water meter metering axle 2 is fixed with gear 25, and the metering disk 1 that has groove 22 is positioned at the below of gear 25.Metering disk 1 is fixedlyed connected with two-way gear 3, and the below of metering disk 1 is a gear 4, and the transmission shaft 5 of gear 4 and stepper motor is fixedlyed connected.The end of transmission shaft 5 be dividing plate 8 the below be stepper motor 11, stepper motor 11 is fixedlyed connected with transmission shaft 5.Water valve 16 is arranged near the water delivering orifice, and water valve 16 is fixedlyed connected with control lever 20.Control lever 20 is connected with hinge 18 hinges, and the top of control lever is positioned near the groove 22 of metering disk 1.Below metering disk 1, also has a cam 19.When cam 19 is positioned at the A position, two-way gear 3 on the metering disk and gear 25 interlocks.When cam 19 is positioned at the B position, two-way gear 3 on the metering disk 1 and gear 4 interlocks.There is tumbler gear 24 below of cam 19, and a transmission shaft 30 of tumbler gear 23 is connected tumbler gear 24 with cam 19 hinges another transmission shaft 17 is fixedlyed connected with speed reduction unit 14.A positioning rod 21 is arranged near the cam 19.Dividing plate 8 partly separates the mechanical part and the control circuit of water meter, and an end of spring 6 is fixedlyed connected with water valve 16, and the other end and dividing plate 8 are fixedly connected in the space of below of dividing plate 8 also has magneto 13, speed reduction unit 14, power pack 9, circuit board 12.

The utility model has solved the weak point of the advance water wasting of existing IC-card (gas) table, even under the situation that has a power failure and artificially cut off the power supply, also can not influence the accuracy of metering.Not only accurate measurement, use are also convenient, and the function of user's early warning is arranged, and are convenient to very much popularize and use.

Below in conjunction with drawings and Examples the utility model is illustrated:

Fig. 1-Fig. 4 is embodiment of the present utility model.

Figure is the structural drawing of the utility model mechanical part;

Fig. 2 is the schematic diagram of power unit of the present utility model;

Fig. 3 is the annexation figure of tumbler gear 23 and cam 19;

Fig. 4 is the structural drawing of two-way gear.

As shown in Figure 1, 2, 3, original state control lever 20 is in the groove 22 of metering disk 1 during use, and near the water valve 16 of water delivering orifice this moment cuts out, and cam 19 is positioned at the A position, gear 3 on the metering disk and gear 25 interlocks.When the user inserted socket to the IC-card of the buying water yield, data control circuit IC1 started working.

Detect the electric weight of battery then, to guarantee finishing smoothly of follow-up work.Read the data of IC-card then, confirm the water yield that the user bought.

Data control circuit IC1 sends instruction to control circuit IC3 then, control circuit IC3 makes a, a ' respectively and b, b ' connection, magneto M rotates, through speed reduction unit 13, transmission shaft 17, tumbler gear 23, make cam 19 forward the B position to according to clockwise direction by the A position, the control lever 20 of cam is pushed away groove 22, this moment, water valve 16 was opened, since cam off normal and the weight of metering disk 1 descends metering disk 1, gear 3 and gear 4 interlocks, when cam rotation arrives the B position, backstay 21 has stoped cam 19 to rotate, this moment, the drive current of magneto M significantly rose, the voltage that detects on the resistance R rises, and this signal feedback makes IC3 control K1 to control circuit IC3, K2 makes a, b point and a ', b ' some disconnection.

Then when magneto M stops operating, signal is delivered to data control circuit IC1 by control circuit IC3 and is handled, data control circuit IC1 sends numerical signal according to the data of reading IC-card to driving circuit IC2, and stepper motor BM drives corresponding angle of metering disk 1 rotation according to the indication of driving circuit IC2.After stepper motor BM work is finished, send a signal by stepper motor BM (11) to control circuit IC3 again, make control circuit IC3 control a respectively, connect c respectively at a ', c ' point, magneto M (13) backward rotation, through speed reduction unit 14, transmission shaft 15, tumbler gear 23 actuating cams 19 turn to the A position along counter-clockwise direction, this moment, cam 19 made gear 25 interlocks on metering disk 1 rising and the water meter measurement axle 2, because the effect of backstay 21, the drive current of magneto 13 significantly rises, voltage on the resistance R rises, and control circuit was controlled K1 after signal feedback arrived control circuit IC3, K2 makes a, a ' and c, c ' some disconnection.This moment, all circuit all quit work, and mechanical water meter is started working.Rotate with what of current with mechanical water meter metering axle 2 metering disks that are connected 1, when the groove on the metering disk 1 22 turned to the position at control lever 20 places, control lever 20 entered groove 22, and water valve 16 cuts out and finishes one at this moment and buy the water process.

Because mechanical water meter is actual to be a gear counter, the pointer number on it and the number correspondence of the water yield.As the water yield that the user bought is 8 cubic metres, behind user's plug-in card, data control circuit IC1, IC2, control circuit IC3 control step motor 11 rotated for 7/10 week, control lever 20 just enters groove 22 when metering disk under current promote 1 reversed for 7/10 week, the user can insert once to block again and make stepper motor 11 return for 1/10 week, to reach the purpose of warning.

As shown in Figure 4, two-way gear 3 and sleeve 31 are slidingly connected.Sleeve 31 is fixedlyed connected with gear 4, transmission shaft 5, and the other end of sleeve 31 and water meter measurement axle 2 are slidingly connected.When cam 19 is positioned at the A position, two-way gear 3 and gear 25 interlocks.When cam 19 is positioned at the B position, two-way gear 3 and gear 4 interlocks.Two-way gear 3 moves up and down along sleeve 31.

The utility model goes for the prepaid gas meter equally.

Claims

1. IC-card pre-charges water meter, it is characterized in that above-mentioned IC-card pre-charges water meter is mainly divided by power control part and mechanical part is formed, power control part divides by IC-card data processing circuit IC1, the driving circuit IC2 that is used for control step motor BM, control circuit IC3, the power control circuit that is connected on magneto M two ends is formed, the negative terminal that consists of at power supply of power control circuit is connected in series a resistance R, gauge tap K1 is connected on the anode of power supply and the centre of motor M, gauge tap K2 is connected on the other end of motor M and the centre of resistance R, K1 control a point can with b point or with c point break-make, K2 control a ' can and b ' or and c ' some break-make; The mechanical water meter that is connected with mechanical water meter gear case (24) that consists of of mechanical part measures axle (2), one end of mechanical water meter metering axle (2) is fixed with gear (25), the metering disk (1) that has groove (22) is positioned at the below of gear (25), metering disk (1) is fixedlyed connected with two-way gear (3), the below of metering disk (1) is gear (4), the transmission shaft (5) of gear (4) and stepper motor (11) is fixedlyed connected, the end of transmission shaft (5) is the stepper motor (11) that is positioned at the below of dividing plate (8), stepper motor (11) is fixedlyed connected with transmission shaft (5), water valve (16) is arranged near the water delivering orifice, water valve (16) is fixedlyed connected with control lever (20), control lever (20) is connected with hinge (18) hinge, the top of control lever (20) is positioned near the groove (22) of metering disk (1), also has a cam (19) in the below of metering disk (1), when cam (19) is positioned at the A position, two-way gear (3) on the metering disk (1) and gear (25) interlock, when cam (19) is positioned at the B position, two-way gear (3) on the metering disk (1) and gear (4) interlock, there is tumbler gear (24) below of cam (19), a transmission shaft (30) of tumbler gear (23) is fixedlyed connected with cam (19), near a positioning rod (21) in addition of cam (19), another transmission shaft (17) of tumbler gear (24) is fixedlyed connected with speed reduction unit (14), dividing plate (8) partly separates the mechanical part and the control circuit of water meter, one end of spring (6) is fixedlyed connected with water valve (16), the other end is fixedlyed connected with dividing plate (8), also has magneto (13) in the space of the below of dividing plate (8), speed reduction unit (14), power pack (9), circuit board (12).