CN2369221Y

CN2369221Y - Water meter with intellectual and for precharging

Info

Publication number: CN2369221Y
Application number: CN 98225088
Authority: CN
Inventors: 彭兴华
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-09-10
Filing date: 1998-09-10
Publication date: 2000-03-15
Anticipated expiration: 2008-09-10

Abstract

The utility model relates to a water meter with an intelligent card for pre-charging, which comprises an intelligent card charging component which regards a single chip computer as the center, is provided with water quantity value and password memory units and stores the pre-charged fee, i.e. the admitted water consumption quantity value, an electric valve and a bridge type off-on control circuit thereof. The water meter with an intelligent card for pre-charging is provided with a rotary wing type metering core, and the input terminal of the single chip computer is provided with an electromechanical sensor. The structure is novel, the design is rational, and a water quantity charging component and the intelligent card charging component are combined into a whole. The water meter with an intelligent card for pre-charging has the advantages of accurate metering, stability, reliability, safe use, convenient installation, etc. The water fee is pre-charged through the intelligent card, which conforms to the reasonable requirement of paying before enjoying in the modern society, and the water meter with an intelligent card for pre-charging can produce notable social benefits and economic benefits.

Description

Pre-charges water meter with intelligent card

The utility model relates to measures the device that passes through the instrument fluid flow continuously, relates in particular to a kind of pre-charges water meter with intelligent card.

The common water meter inconvenience management of existing water supply industry metering usefulness, easily take place to leak copy, mistake is checked meter phenomenon, and the user is first water, pay in the back.The applicant's the CN1172253A of patent formerly discloses a kind of " pre-charges water meter with intelligent card ", can remedy the deficiencies in the prior art, but its metering signal pick-up part is made up of small magnet and tongue tube, the input end of electrically operated valve control circuit also cross-over connection has tongue tube, in use for some time, the malfunctioning phenomenon of control easily takes place.

The purpose of this utility model is that the CN1172253A of patent formerly to the applicant makes improvements, and proposes another pre-charges water meter with intelligent card.

The purpose of this utility model is achieved by the following technical programs.

This pre-charges water meter with intelligent card, comprise watch shell, be core with the single-chip microcomputer and have water yield value and cipher memory unit and preserve the smart card charging parts that prepaid promptly allows the water value, electrically operated valve and double input end thereof are connected to the bridge switch control circuit of smart card single-chip microcomputer two output terminals respectively, it is characterized in that being provided with rotary wind type metering movement, and the input end of single-chip microcomputer is provided with the pickoff that the rotor rotation information is converted to electric signal, the sensing head of this pickoff is one to be arranged on the iron that bumps at rotor top, and the watch shell top also is provided with the battery case of built-in intelligence card deck.

The utility model novel structure, reasonable in design, with water consumption measurement parts and smart card charging unit construction one, and provide input signal for single-chip microcomputer by pickoff, have accurate measurement, reliable and stable, safe in utilization, advantage such as easy for installation.By the advance water rate of smart card, meet the reasonable demand of enjoying behind modern society's post-pay paystation, can produce remarkable social benefit and economic benefit.

The utility model has the following drawings:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is an electrical schematic diagram of the present utility model.

Below in conjunction with embodiment and contrast accompanying drawing the utility model is made an explanation.

The pre-charges water meter with intelligent card of embodiment, comprise watch shell 1, with the single-chip microcomputer is the smart card charging parts of core, by motor and wheel box 6, O-ring seal 7, valve sheet 8, gear 9, electrically operated valve that Spring Card 13 and valve seat 15 are formed and the typical bridge switch control circuit of forming by transistor Q1-Q4 thereof, single-chip microcomputer and bridge switch control circuit board 4 place the top of watch shell 1, the top of watch shell 1 also is provided with the battery case 5 of built-in intelligence card deck 3, the rotor 10 of rotary wind type metering movement places the below of watch shell 1, its top has one to bump iron 18, and it is the sensing head of pickoff 2.Also be provided with the water inlet airflow fence 11 and the filter mantle 12 that separate by O-ring seal 14 and valve seat 15 sealings in the watch shell 1.Watch shell 1 also is divided into intake antrum 16 and water chamber 17 by valve seat 15.

The user will insert deck 3 from the water supply department smart card of buying of paying, single-chip microcomputer is by the software program operation of setting, judge earlier whether card is gone up the password that sets in advance in password and the machine identical, when inequality, no longer carry out subsequent operation, when identical, read in the data in the card and deposit in the EEPROM, this moment, the P3 mouth of single-chip microcomputer was exported high level, make the transistor Q1 of bridge switch control circuit, the Q4 conducting, motor M gets electricly just changes, drive valve sheet 8 and turn clockwise 45 °, the water of water meter intake antrum 16 flows out through water chamber 17 by valve, after valve sheet 8 is rotated in place, the A point of bridge switch control circuit and ground conducting, transistor Q1, Q4 ends, the stall of motor M dead electricity, valve is held open state, the user is water normally, the metering of rotary wind type metering movement, the output of pickoff 2 can make the data among the EEPROM of single-chip microcomputer be reduced as zero gradually, this moment single-chip microcomputer P4 mouth output high level, make the transistor Q2 of bridge switch control circuit, the Q3 conducting, motor M gets electric counter-rotating, drive valve sheet 8 and be rotated counterclockwise, cut off current, stop to supply water to the user, the B point of bridge switch control circuit and ground conducting at this moment, transistor Q2, Q3 ends, the stall of motor M dead electricity, and valve keeps closed condition.

Claims

1, a kind of pre-charges water meter with intelligent card, comprise watch shell, be core with the single-chip microcomputer and have water yield value and cipher memory unit and preserve that prepaid promptly allows water value and smart card charging parts, electrically operated valve and double input end thereof to be connected to the bridge switch control circuit of smart card single-chip microcomputer two output terminals respectively, it is characterized in that being provided with rotary wind type metering movement, and the input end of single-chip microcomputer is provided with the pickoff that the rotor rotation information is converted to electric signal, and the watch shell top also is provided with the battery case of built-in intelligence card deck.

2. pre-charges water meter with intelligent card as claimed in claim 1, the sensing head that it is characterized in that pickoff are one to be arranged on the iron that bumps at rotor top.