CN101021431A

CN101021431A - Table type bar code detector

Info

Publication number: CN101021431A
Application number: CN 200710090944
Authority: CN
Inventors: 赵辰; 王杰; 柏寒森; 张唯
Original assignee: ARTICLE NUMBERING CENTER OF CHINA; Beijing Dongfang Jiecode Science & Technology Development Center
Current assignee: ARTICLE NUMBERING CENTER OF CHINA; Beijing Dongfang Jiecode Science & Technology Development Center
Priority date: 2007-03-28
Filing date: 2007-03-28
Publication date: 2007-08-22
Anticipated expiration: 2027-03-28
Also published as: CN100442020C

Abstract

A stage bar-code detecting apparatus is composed of host computer and computer connected by electrical box. Host computer is connected with electric engine, transmission source, probe bracket, read head bracket and longitudinal guide separately by scan platform. Longitudinal operating platform connects longitudinal and lateral guide and grating ruler brace. Probe bracket connects N-average pointer, reflectance source and adjust handle. Grating ruler brace connects grating ruler. Read head connects bracket and electrical box which is connected with doubling circuit and single chip by reversible counting circuit. Single chip connects communicating interface, analog-to-digital conversion, channel optical coupling, electrical engine and driving circuit. The device can detect printed bar-code and bar-code production acetate, has Abbe error eraser and high testing precision, can realize average measurement for one bar-code, parallel moving, data collecting, simple operation, can detect merchandise bar-code, cross two-five bar-code, logistics bar-code and 128 bar-code etc.

Description

Table type bar code detector

Technical field:

The present invention relates to a kind of pick-up unit, relate in particular to a kind of table type bar code pick-up unit, whether meet national standard and up-to-date international standard to detect printed bar-code and the bar of bar code production acetate, empty physical dimension and optical characteristics and barcode technology index.

Background technology:

Barcode technology has solved " bottleneck " problem of data input in the computer utility process with characteristics such as reliable, quick, economic, practical, and bar code has become " common language " and " I.D. " of commodity in the world in the international trade.

The bar empty graphic that bar code is one group of width difference, black and white is identical, it utilizes the variation of bar, empty size and the empty double-colored optical characteristics of bar differently comes beared information, realize identification and automatic data acquisition automatically.Therefore bar, empty physical dimension and optical characteristics are the important parameters that guarantees the correct recognition of bar code, and table type bar code detector is the high precision measuring instrument that the bar of finishing bar code printing product and bar code production acetate, empty size and optical characteristics detect.

Barcode technology development comes from twentieth century mid-term, and the development of bar code printing product detection technique is mainly in the late 20th century.The bar code printing quality is the basis that bar code is used.ISO (International Standards Organization) and various countries standardization body all attach great importance to the foundation and the execution of bar code examination criteria.Existing bar code detector standard has dual mode, and is a kind of based on the early stage EAN standard of International Article Numbering Association, from the angle of measuring, provides the absolute deviation of bar code-bar, sky, and reflectivity actual measured value and PCS value also claim " traditional detection mode "; Another examination criteria is the recognition angle from bar code, and the single index of describing the bar code printing quality is carried out comprehensively, differentiates the level relatively of bar code printing product quality with integrated level.The method that this hierarchical synthesis is judged originates from the bar code examination criteria " ANSI X3.182 Bar Code Print QualityGuideline-1990 " of NBS's promulgation at the beginning of the nineties, is commonly called as " U.S. mark ".This standard has been set up a cover specification of symbols from the actual conditions of bar code scan, has stipulated decoding algorithm simultaneously, obtains one group of data with this, in order to describe, differentiates the level relatively of certain bar code printing product quality.It is not the concrete size of the detector bar that isolates, empty error, the absolute figure of reflectivity, but reflectivity and the bar empty width measure of bar code symbol on various matrix taken all factors into consideration, finally represent the printing quality of a bar code symbol in the mode of A, B, C, D, F grade.This standard is now adopted by Europe, Japan and other countries and area, the method that ISO/IEC/JTC1/SC31 has also adopted hierarchical synthesis to judge at the international standard ISO/IEC15416 Bar Code Print Quality Test Specification-Linear Symbols of promulgation in 2000.The method that the test stone of bar code of China and bar code symbol printing quality has adopted hierarchical synthesis to judge, other bar code standard also will be revised in view of the above.The bar code production acetate is the basis of printed bar-code, its fabricating quality is the key of printed bar-code, ISO/IEC/JTC1/SC31 is in the international standard ISO/IEC 15421:2000 bar code production acetate test specification of promulgation in 2000, from the angle of measuring, provide bar code-bar, empty physical size, absolute deviation and be wide increase or the minimizing of compensation printing process discal patch, to the wide adjustment amount of bar on the bar code production acetate etc.

The early 1990s, part foreign vendor begins to promote the bar code checkout equipment to China, but the checkout equipment problem of import is many, especially simultaneously has the high precision bar code detector that detects bar code printed matter and bar code production acetate two class functions, the one, price is expensive, the most cheap also wants more than ten ten thousand yuan, the 2nd, because the region restriction, the after sale service that external businessman provides is relatively poor, the instrument of the many units maintenance difficult that goes wrong, the 3rd, the precision that some instrument provides is not inconsistent with actual test, producer does not provide technical support again, and in addition, the detector of " scanning pattern reflectance curve " analytic approach seldom in execution ISO/IEC 15416 standards, particularly Wai Guo instrument does not have Chinese operation interface, uses difficulty for the domestic employee who not too understands foreign language.The national metrological verification regulations " bar code detector " that the bar code detector of external import all can not be carried out People's Republic of China's promulgation fully (JJG979-2003) in the metering performance index of regulation.

Summary of the invention:

The objective of the invention is to: design a kind of carry out fully People's Republic of China's national metrological verification regulations " bar code detector " (JJG979-2003) in the regulation every metering performance index and State Standard of the People's Republic of China's " detection of bar code symbol printing quality " (GB/T18348-2001), provide comprehensive bar code quality analysis report according to international bar code hierarchical detection standard and traditional detection standard, on same instrument, have two kinds of functions that detect printed bar-code and bar code production acetate, relative low price, the precision height, stable performance, keep in repair easy to use, the A level instrument in the bar code detector of Chinese operation interface.

The present invention is achieved in that the main frame of table type bar code detector links to each other with electric appliance box, and electric appliance box links to each other with the computing machine of band printer; The dust cover of main frame is connected with scanning platform, scanning platform and lower margin adjusting screw(rod), motor, transmitted light source, probe bracket, read head support and longitudinal rail are close to, longitudinal rail is close to vertical worktable, vertically worktable and cross slide way and grating chi supporting plate are close to, and probe bracket is connected respectively with N average pointer, mirror unit, reflection source, measurement aperture sensor, measurement aperture adjustment handle; Cross slide way and horizontal work level are close to; Horizontal work level and N average push-and-pull braking handle are close to; Grating chi supporting plate and grating chi are close to; Read head support and grating reading head are close to; Grating reading head is connected with electric appliance box.Electric appliance box by: (74LS574 is connected frequency multiplier circuit (connecting 74LS54 respectively by gate circuit 74LS14 forms with 74LS08) by gate circuit 74LS193 AND circuit with the reversible counting circuit; 74LS574 AND circuit 74LS138,74LS32 respectively connects) connect; The reversible counting circuit is connected with single-chip microprocessor MCU (ADuC831); Single-chip microprocessor MCU and communication interface USB (being connected with TLP521 with 6N137 respectively), analog to digital conversion circuit ADC (ADuC831 is built-in), position signalling metering circuit (flute profile optocoupler), motor-drive circuit by CP2101 (by optocoupler TLP250 be connected with field effect transistor IRF640, IRF640 is connected with relay BG6E-134P) link to each other.Form with the electric appliance box working power.

The invention has the advantages that: the measurement verification regulations " bar code detector " that this desk-top bar code detector meets People's Republic of China's promulgation (JJG979-2003) in every metering performance index of regulation and State Standard of the People's Republic of China's " detection of bar code symbol printing quality " (GB/T18348-2001), provide comprehensive bar code quality analysis report according to international bar code hierarchical detection standard and traditional detection standard, on same instrument, have two kinds of functions that detect printed bar-code and bar code production acetate; Structurally vertically move worktable and adopted the scheme of eliminating Abbe error, thoroughly overcome the defective on the external apparatus structure of knowing clearly, reduce systematic error, improve measuring accuracy; Horizontal travelling table is used for same bar code is repeatedly asked when all measuring, and bar code is carried out parallel moving, and improves reliability and operability that the bar code quality is carried out multianalysis; Electric appliance box has functions such as data acquisition, function selecting, and it is connected as a single entity main frame, computing machine by cable; Computing machine adopts Chinese operation interface, carries out function selecting, data transmission, control operation by USB interface, and is simple and convenient, easy-to-understand; Automatically differentiate by the code system of recognition bar code; Can detect bar code (EAN-13 bar code, EAN-8 bar code, UPC-A bar code, UPC-E bar code), interleaved 2 of 5 bar code, logistics bar code (ITF sign indicating number), 128 bar codes, trade unit 128 bar codes, three nine-day periods after the winter solstice bar code, Ku Deba bar code multiple code systems such as (CODABAR sign indicating numbers); Bar code hierarchical detection method, traditional detection method and tolerance measurement method are provided, show, print the testing result of bar code printing product and production acetate; Single/n time scanning (n≤10 time) can be selected, when selecting to scan for n time, the average rank that bar code symbol scans for n time can be obtained; Real-time depiction goes out to detect bar code " scanning pattern reflectance curve " and can adjust the curve display dimension of picture on computer display, for analyzing and study the fabricating quality of bar code, provides convenient and reliable means; Can select to use the testing result under the various detection methods of printer prints of various models; Adjustable point detects the reflectivity of optional position.

Description of drawings:

Fig. 1 is the connection diagram of each several part of the present invention

Fig. 2 is the inner structure synoptic diagram of main frame of the present invention

Fig. 3 is the vertical view of main frame of the present invention

Fig. 4 is the program flow diagram of electric appliance box part of the present invention

Embodiment:

Computing machine 1 and printer 2 as shown in Figure 1, electric appliance box 3 connects, electric appliance box 3 is connected with main frame 4, the dust cover 8 of main frame 4 is connected with scanning platform 22 (Fig. 3) as shown in Figure 2, scanning platform 22 and lower margin adjusting screw(rod) 5, motor 6, transmission microscope base 10, transmitted light source 14, probe bracket 18, read head support 20 (Fig. 3) and longitudinal rail are close to, longitudinal rail is close to vertical worktable 15, vertically worktable 15 is close to cross slide way and grating chi supporting plate 21 (Fig. 3), probe bracket 18 and N average pointer 12, mirror unit 11, reflection source 13, measure aperture sensor 17, measuring aperture adjustment handle 19 connects; Cross slide way and horizontal work level 9 are close to; Horizontal work level 9 is close to N average push-and-pull braking handle 16; Grating chi supporting plate 21 is close to the grating chi as shown in Figure 3; Read head support 20 is close to grating reading head; Grating reading head is connected with electric appliance box 3, bar code printing product (or production acetate) is placed on the horizontal work level workplace 7.Reflection source during detection (or transmitted light source) permeametry unthreaded hole (not drawing among the figure) forms measuring beam and is radiated on bar code printing product (or production acetate) the symbol surface that is placed on the horizontal work level workplace, as shown in Figure 1: electric appliance box MCU is by the motor rotation on the motor-drive circuit main control system and drive vertical movable workbench, measuring beam scans each bar on the bar code printing product (or production acetate) that is placed on the horizontal work level workplace successively, empty, and by the reflection of bar code printing product (or seeing through production acetate), reflected light (or transmitted light) is converted into electric signal, the length signals of grating chi converts pulse signal to simultaneously, two signals are sent into electric appliance box simultaneously, through A/D (ADC) conversion, frequency multiplier circuit, up-down counter, after handling, single-chip microcomputer (MCU) sends into computing machine in the lump by communication interface USB, computing machine goes out the reflectance value of each bar/sky according to the numerical evaluation of two signals, size value, the real-time scanning reflection rate curve of on computer display screens, depicting, according to the standard of relevant bar code printing product (or production acetate), calculate the analysis and the evaluation result of tested bar code printing product (or production acetate) fabricating quality.Program flow diagram about electric appliance box sees also Fig. 7.

Technical indicator about this device is as follows:

1, measurement light source: wavelength 670nm ± 10nm

2, measure the aperture: five kinds of measurement aperture steppings are adjustable, 0.025mm (being the 1mil slit), 0.076mm (being 3mil), 0.152mm (being 6mil), 0.254mm (being 10mil), 0.508mm (being 20mil)

3, resolution: 0.1um

4, meet the metering performance requirement of A level instrument in the national metrological verification regulations " bar code detector " (JJG 979-2003).

5, meet national standard " check of bar code symbol printing quality " (GB/T 18348-2001).

6, vertical surveying work platform efficient working range: 196mm

7, cross measure worktable efficient working range: 18mm

8, allow to measure the maximum length (containing the bar code clear area) of bar code: 196mm

9, allow to measure the maximum ga(u)ge of bar code sample: 6mm

10, environment for use: 20 ℃ ± 2 ℃ of temperature; Relative humidity 40%-60%

11, bar code detects application software running environment: WIN98/2000/XP

12, power supply: AC 220V ± 10%/50Hz

Power: 30W.

Claims

1, a kind of table type bar code inspection detector, the computing machine that is connected main frame and band keyboard by electric appliance box is respectively formed, it is characterized in that: the dust cover of main frame is connected with scanning platform, scanning platform and lower margin adjusting screw(rod), motor, transmitted light source, probe bracket, read head support and longitudinal rail are close to, longitudinal rail is close to vertical worktable, vertically worktable and cross slide way and grating chi supporting plate are close to, and probe bracket is connected respectively with N average pointer, mirror unit, reflection source, measurement aperture sensor, measurement aperture adjustment handle; Cross slide way and horizontal work level are close to; Horizontal work level and N average push-and-pull braking handle are close to; Grating chi supporting plate and grating chi are close to; Read head support and grating reading head are close to; Grating reading head is connected with electric appliance box.

2, detector according to claim 1 is characterized in that: described electric appliance box reversible counting circuit connects frequency multiplier circuit and single-chip microcomputer respectively; It is flute profile optocoupler, motor-drive circuit that single-chip microcomputer connects communication interface, analog to digital conversion, position signalling metering circuit again respectively; Electric appliance box connects working power and forms.

3, detector according to claim 2 is characterized in that: described frequency multiplier circuit is connected to form with 74LS54 and gate circuit 74LS08 respectively by gate circuit 74LS14; The reversible counting circuit is connected by gate circuit 74LS193 AND circuit 74LS374, and gate circuit 74LS138 AND circuit 74LS374 and AND circuit 74LS32 respectively connects to form; Communication interface by CP2101, connect 6N137 respectively and TCP521 forms; Single-chip microcomputer is selected ADuC831 for use; Analog to digital conversion is selected the built-in analog to digital converter of ADuC831 for use; Motor-drive circuit is connected to form with optocoupler TLP250 and relay BG6E-134P respectively by power amplifier IRF640.

4, detector according to claim 1 is characterized in that: the technical indicator of described detector is: measurement light source: wavelength 670nm ± 10nm; It is adjustable to measure five kinds in aperture: 0.0254mm is the 1mil slit, and 0.076mm is 3mil, and 0.152mm is 6mil, and 0.254mm is 10mil, and 0.508mm is 20mil; Resolution: 0.1um; Meet national metrological verification regulations " bar code detector " rules numbering: the metering performance requirement of A level instrument among the JJG979-2003; Meet national standard " check of bar code symbol printing quality " standard numbering: GB/T 18348-2001; Vertically surveying work platform and cross measure worktable efficient working range are respectively: 196mm, 18mm; The maximum length that allows to measure bar code comprises bar code clear area: 196mm; Allow to measure the maximum ga(u)ge of bar code sample: 6mm; Environment for use: 20 ℃ ± 2 ℃ of temperature; Relative humidity 40%-60%; Bar code detects application software running environment: WIN98/2000/XP; Power supply: AC 220V ± 10%/50Hz, power: 30W.