CN2332004Y

CN2332004Y - Rear-time display bar code counter

Info

Publication number: CN2332004Y
Application number: CN 98233887
Authority: CN
Inventors: 胡晓春; 胡由央
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-03-25
Filing date: 1998-03-25
Publication date: 1999-08-04
Anticipated expiration: 2008-03-25

Abstract

The utility model relates to a bar code counter, which can be used for the amount calculation of an electric meter, a gas meter, a water meter, etc. A binary to decimal counting circuit, a decoding circuit, a drive circuit, a display device, etc. are utilized for converting digital information into bar code information, A display device composed of a plurality of sections of liquid crystal modules arranged densely side by side is used for displaying bar codes which can be read by a bar code reader, thus labor intensity for meter reading is relieved, and error is reduced. The utility model has the advantages of simple structure, accurate calculation, real-time display, etc.

Description

Show bar code counter in real time

The utility model is a kind of real-time demonstration bar code counter for the bar-code reader reading that uses in watt-hour meter, gas meter or the water meter.

In the past, the device of some meterings and demonstration metering numerical value, as watt-hour meter, gas meter and water meter, generally be that table itself has several wheel type counters or electron number font counter, there is inconvenience in management to counting cost by gas meter for this, and they can not be read by bar-code reader when checking meter, need manually copy collection, handle, workload is big, and efficient is also low, and inconvenience appliance computer is better handled.At present, barcode technology has formed an individual system, and it has become a important applied field in the information processing technology as the coding techniques of a kind of automatic input of information and collection.The counter that shows with bar code also arises at the historic moment, yet this bar code symbol all is printed to, and is located on the face of cylinder of number wheel, shows that bar code information, its weak point are that mechanical component is many, the transmission complexity with mechanically operated mode accumulative total.

The purpose of this utility model is for overcoming the deficiencies in the prior art part, a kind of minimizing mechanical transmission mechanism being provided, with the bar code counter of real-time mode demonstration.

The purpose of this utility model is achieved by the following technical solution, show that in real time bar code counter comprises housing, face frame, BCD counting circuit, decoding scheme, driving circuit and display device etc., special feature is that display device can closely be made of by the Liquid Crystal Module that bar code character information rule shows side by side plurality of sections, is connected to the output terminal of driving circuit.Further, the left side frame is provided with the clear area and the initial symbol of bar code, and the right side frame is provided with the clear area and the full stop of bar code, shows that the Liquid Crystal Module section of bar code information is located between initial symbol and the full stop.

Below in conjunction with drawings and Examples the utility model is further elaborated.

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

Fig. 2 is that Liquid Crystal Module of the present utility model is provided with synoptic diagram;

Fig. 3 is a circuit block diagram of the present utility model.

Referring to Fig. 1, Fig. 2 and Fig. 3, present embodiment by housing 1, face frame 2, connection terminal 7, be loaded on the Liquid Crystal Module 3 on the face frame and make Liquid Crystal Module 3 show that counting circuit, decoding scheme, the driving circuit of bar code information constitute.Be described as follows with the matrix two-out-of-five code:

Its bar code character is divided into data character and initial symbol, full stop two classes.Initial symbol, the special character of termination are changeless.And data character is encoded by BCD counting rule, because its each numerical data character design feature is made up of nine sections black and white sticks, wide of black is made up of three adjacent black sticks, and wide of white is made up of three adjacent white sticks.Therefore, can be closely aligned together with nine sections Liquid Crystal Modules 3, represent a digital character cell, in nine sections Liquid Crystal Modules 3, be lighted that Liquid Crystal Module and just demonstrate black fillet symbol, that liquid crystal mould of not lighted then is white fillet symbol; When adjacent two sections or three periods whiles are lighted, just demonstrate wide symbol of black, the place of the two neighboring sections of not lighted or three sections Liquid Crystal Modules can become wide symbol of white.As long as coding rule according to the matrix two-out-of-five code, light the Liquid Crystal Module 3 of certain position, just can demonstrate the data character of representing different digital, like this, with nine sections Liquid Crystal Modules 3 is one group of elementary cell, and five groups of Liquid Crystal Modules 3 just can be formed four numerical information (as shown in Figure 2).Because Liquid Crystal Module 3 is to be closely aligned together, the width of adjacent gap ratio Liquid Crystal Module 3 is much smaller, thereby can guarantee that bar-code reader can not cause misreads.

For example when beginning to count, zero setting, conventional BCD counting circuit is lighted the 1st, 3,4,5,9 section Liquid Crystal Module 3 of first module through decoding scheme, driving circuit, demonstrates " 0 " data character; When first pulse of its order unit, just light the 1st, 2,3,5,7,8 and 9 section Liquid Crystal Module, show " 1 " data character.When it receives second pulse, just light the 1st, 5,7,8 and 9 Liquid Crystal Modules, show " 2 " data character ... on behalf of accumulative total, full " 10 " progression Unit second, the bar code symbol that Fig. 2 shows be " 0123 ".So add up carry.Be located at the initial symbol 4 of bar code of left side frame 2, the demonstration Liquid Crystal Module because its symbol is constant, can not established in clear area 5 and be located at bar code full stop 6, the clear area 5 of right side frame 2, and with the black and white bar symbol of block letter substitute, with the saving Liquid Crystal Module.

Be noted that and have only the discrete code could be selected that as the single wide bar code of basic Biquinary Code, matrix two-out-of-five code, BC412 and BC309 etc., their satisfy and constitute every figure place and carry changes.In addition, between the character symbols is changeless at interval, is not with any information, so position at interval also is need not establish Liquid Crystal Module 3.

Display surface frame of the present utility model, its structure should be able to meet the demands, and from left to right is made up of Liquid Crystal Module (data segment), check field (optional), full stop 6 and the clear area 5 of clear area 5, initial symbol 4, display message.

Certainly, rule according to dissimilar bar codes, in the bar code character symbol, if the bar of being lighted all the time or not lighted all the time when using symbol, also fixing bar symbol replacement liquid crystal module can printed on its relevant position, thereby can further reduce the hop count of Liquid Crystal Module, to simplify circuit, to reduce cost.

Institute to sum up, the utility model has obvious advantage:

1, substitute traditional machine driving counting mechanism with Liquid Crystal Module and digital circuit, simple in structure, Count more accurate;

2, avoid the various member of mechanism driving, and realized real-time demonstration;

3, ammeter, gas meter, water meter etc. are used this bar code counter, are read by bar-code reader, alleviate labour intensity of checking meter and the possibility that reduces mistakes and omissions greatly, have improved work efficiency.

Claims

1, shows bar code counter in real time, include housing, face frame, two---decade counter circuit, decoding scheme, driving circuit and display device etc., it is characterized in that: display device can closely be made of by the Liquid Crystal Module that bar code character information rule shows side by side plurality of sections, is connected to the output terminal of driving circuit.

2, real-time demonstration bar code counter according to claim 1, it is characterized in that the left side frame is provided with the clear area and the initial symbol of bar code, the right side frame is provided with the full stop and the clear area of bar code, shows that the Liquid Crystal Module section of bar code information is located between initial symbol and the full stop.