CN2711701Y

CN2711701Y - Electronic coding water meter

Info

Publication number: CN2711701Y
Application number: CN 200420018116
Authority: CN
Inventors: 王祥华; 熊名智; 王啟明
Original assignee: TIANNING METERS Manufacturing CO LTD WUHAN
Current assignee: TIANNING METERS Manufacturing CO LTD WUHAN
Priority date: 2004-05-18
Filing date: 2004-05-18
Publication date: 2005-07-20
Anticipated expiration: 2014-05-18

Abstract

The utility model relates to an electronic coding water meter, comprising a mechanical revolving flowmeter, a changer, a processing circuit and a display. The water meter processing circuit comprises a memory 1 which stores meter numbers and the water yield adjustment coefficient; a single-chip computer 2 characterized in that a plurality of coding data can be produced through a self carrying coding operating module 7 according to the data of the input water yield signal, the meter number and the adjustment coefficient; a display 5 used for displaying the data of the meter number, the coding and the water consumption. The utility model combines the mechanical water meter with the digital electronic technology for reading the digital water consumption and the current water consumption coding visually. The meter reading personnel can read the data of the meter number, the coding and the water consumption and then send the data to the administration computer to operate logical inverse operation. Because the coding is produced at random, the copy and read data of each time are different. Thus, the phenomenon of wrong copy, evaluated copy and false copy can be avoided. The utility model has the advantages of simple structure, dependability and practicality, high accuracy and convenient use.

Description

The electronic code water meter

Technical field

The utility model relates to flow measurement instrument, especially a kind of electronic code water meter.

Background technology

The research of existing water meter focuses mostly at aspects such as IC-card, pre-payment, code tables.These researchs and product mostly are used to solve the water rate recovery problem that the managerial leak of water supply causes, and there is following defective usually: the one, IC-card water meter and long-range prepay water meter all need motorized valve topworks switch water valve, need to be provided with the indicating circuit that IC-card card reader or setting provide water consumption information on the water meter.By the user hold IC-card or by phone with water information notification water supply administrative authority, supervisory computer is purchased water according to obtaining information indication user, these information generally include: purchase the water yield, water consumption, surplus water, surplus water prompting and report to the police or the like.So made things convenient for the supvr, but increased trouble to the user.The 2nd, because the increase of non-metering parts, cause product complicated, the probability that makes product in use go wrong obviously increases, and water meter manufacturer has at water meter ground row to be installed and stays a large amount of after sale service personnel, increased cost thus, also caused inconvenience simultaneously to the user.If adopt conventional water meter, be difficult to then prevent that meter reading personnel mistake from copying, vacation is copied, estimate problem such as copy.How to realize technically both having made things convenient for the user, is be convenient to the water rate management again, and product there handy, reliable?

Summary of the invention

The utility model provides a kind of mechanical water meter is combined with electronic technology, can on water meter, show the anti-electronic code water meter that comprises anti-counterfeiting information, it can effectively solve water-supplying unit in the managerial problem of copy reading table, and circuit structure is simple and clear simultaneously, does not have non-metering parts.

Said electronic code water meter comprises mechanical turbo flow meter, mechanical flow is transformed to the transducer of electric signal, the circuit that the transducer output signal is handled, and display, it is characterized in that: said water meter treatment circuit comprises a storer 1 that stores table number and water yield correction coefficient, an energy is according to input water yield signal, table number and three kinds of data of correction coefficient, by self generate group coding data with coding computing module 7 computings 2, one of single-chip microcomputers be used to show the display 5 of table number, coding, three kinds of data of water consumption; One input port of single-chip microcomputer links to each other with the count pulse output port 4 of transducer through buffer circuit 3, one group of FPDP of single-chip microcomputer links to each other with the FPDP of table number and water yield correction coefficient memory 1, and another group FPDP of single-chip microcomputer links to each other with the FPDP of table number, coding, water consumption display 5.

The utility model combines mechanical water meter with Digital Electronic Technique, can read digital water consumption intuitively, when the hourly water consumption coding, table number, coding, water consumption three numerals under the person's of checking meter copy reading, afterwards these data are sent rear management computer to carry out the logical inverse computing, because coding produces at random, each copy reading is all different, therefore can stop meter reading personnel's mistake technically and copy, estimates and phenomenon such as copy, vacation is copied.Said coding water meter has omitted the IC-card card reader, execution architecture, have simple in structure, reliable and practical, precision height, advantage easy to use.

Description of drawings

Fig. 1 is a functional-block diagram;

Fig. 2 is an electrical schematic diagram;

Fig. 3 is a main program block diagram;

Fig. 4 is a coding operation program block diagram.

Embodiment

The P87LPC762 single-chip microcomputer that single-chip microcomputer 2 among electrical schematic diagram Fig. 2 selects for use Siemens Company to produce, one group FPDP links to each other shown in (as the pin among Fig. 25,3,2,16) with display 5 data port.Its another group FPDP links to each other (shown in the pin among Fig. 29,10) with the FPDP of the storer 1 that stores table number and water yield correction coefficient, and storer 1 can be used the E2PROM scratch pad memory.One signal input part of single-chip microcomputer through buffer circuit 3 and with link to each other from converter output terminal 4, gather the discharge count pulse and send (shown in the pin among Fig. 2 8).Be connected to reset button 6 on the pin 4 of single-chip microcomputer, be used for zero clearing, reset.Computing module 7 internal memories among Fig. 1 contain the machine code of program in Fig. 3, Fig. 4 flow chart, comprise algorithm, counting, Interrupt Process, accumulative total, show or the like that it also is the built-in storer of single-chip microcomputer.Whole working is: table number and the water yield correction coefficient K value in the storer 1 read in beginning, single-chip microcomputer 2, and data pointer is set, system carries out initialization, enter power-down mode afterwards, in order to power saving, read the count pulse input? if do not have, return power-down mode, wait for that if algorithm, counting, the interrupt handling routine that then calls in the computing module 7 arranged, computing generates instant electronic code, content in the refresh display 5 shows when hourly water consumption, coded message afterwards.Process one action process finishes.Shown in Figure 4 is to be stored in computing to rub and generate a kind of algorithm of coding in the piece.

The rear supervisory computer receive contain table number, water consumption, three kinds of data messages of coding after, carry out the logical inverse computing, can judge the correctness of these group data, thereby the decision whether adopt.Coding is a kind of unduplicated digital signal according to table number with when the hourly water consumption generation, so can fundamentally guarantee the accuracy that data are made a copy of, and is a kind of simple, reliable, safeguards that few electromechanics is in conjunction with product.

Claims

1. electronic code water meter, comprise mechanical turbo flow meter, mechanical flow is transformed to the transducer of electric signal, the circuit that the transducer output signal is handled, and display, it is characterized in that: said water meter treatment circuit comprises a storer (1) that stores table number and water yield correction coefficient, an energy is according to input water yield signal, three kinds of data of table number and correction coefficient, by self generate the single-chip microcomputer (2) of group coding data with coding computing module (7) computing, one is used to show table number, coding, the display (5) of three kinds of data of water consumption; One input port of single-chip microcomputer links to each other with the count pulse output port (4) of transducer through buffer circuit (3), one group of FPDP of single-chip microcomputer links to each other with the FPDP of table number and water yield correction coefficient memory (1), and another group FPDP of single-chip microcomputer links to each other with the FPDP of table number, coding, water consumption display (5).