CN201910058U - Portable barcode verifier - Google Patents

Abstract

A portable barcode verifier adopts the structure that a box cover is in close connection with a front panel; the front panel serves the functions of a keyboard; an interface board is connected to the front side in the box cover; a printing port and a power socket are arranged on the interface board; an LCD and a main circuit board are connected to the rear side of the interface board; the main circuit board is assembled with a DC/DC converter, a 2440 core board and the front panel of the box cover; the rear side of the box cover is connected with a CCD (Charge Coupled Device) scanning device; a battery box is arranged at the box bottom; and a movable support frame is arranged on the outer surface of the box bottom. The portable barcode verifier can be connected with a printer, a USB flash disk and an external DC regulated power source, is provided with Chinese and English operation interfaces arranged therein, can automatically identify code systems and decode, provides a barcode step detection method to detect data, can store detection results and all the data analysis, is provided with an RS-232 communication interface, can be charged by a battery as well as connected with an external power supply, has the functions of battery undervoltage warning, battery cut-off protection, automatic/manual turning-off, can selectively save or not save the detection results, achieves statistical averaging of repeated scanning, can store more than 1000 symbols and analysis results, and realizes bilateral barcode scanning.

Description

The portable bar code detector

Technical field

The utility model relates to a kind of pick-up unit, relates in particular to a kind of bar code pick-up unit, whether meets national standard and international standard with bar, empty physical dimension and the optical characteristics that detects bar code.

Background technology

Barcode technology is with characteristics such as reliable, quick, economic, practical, solved data input in the computer utility process " bottleneck,, problem, bar code have become " common language " and " I.D. " of commodity in the world in the international trade.Bar code is one group of width difference, chequered with black and white bar empty graphic, and 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 bar code detector is an instrument of finishing bar, empty size and optical characteristic measurement.

Barcode technology development comes from twentieth century mid-term, and the development of bar code printing product detection technique is in the late 20th century.The printing quality of bar code 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 the examination criteria of bar code.Existing bar code examination criteria has dual mode, a kind of based on the early stage EAN standard of International Article Numbering Association, from the angle of measuring, provide the absolute deviation of bar code-bar, sky, reflectivity actual measured value and PCS value, early stage detector is all carried out this standard, also claims " 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 X 3.182 Bar Code Print Quality Guideline-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/IEC 15416 Bar Code Print QualityTest 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 standards also will be revised in view of the above.

Some manufacturer production bar code printing product checkout equipments are abroad arranged at present, the early 1990s, part foreign vendor begins to promote bar code detector to China, but the detector of import has problems, the one, price is expensive, and the 2nd, because the region restriction, the after sale service that 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.In addition, carry out " scanning pattern reflectance curve " analytic approach among international state-of-the-art technology standard ISO/IEC 15426) and the detector of China newest standards GB/T18348-2008 is seldom.

The utility model content

The objective of the invention is to: design the international newest standards of a kind of execution and China latest national standards GB/T18348-2008, use advanced technology, cost performance height, have the portable bar code detector of Chinese and English operation interface.

The present invention is achieved in that a kind of portable bar code detector, lid and front panel are close to, front panel has keypad function simultaneously, front in lid is connected with interface board, LPT, outlet are arranged on the interface board, the interface board back is connected with LCD and main circuit board, the front panel of main circuit board and DC/DC transducer, 2440 core boards and lid fits together, back at lid links to each other with the CCD scanner, have at the bottom of the box below the lid, battery case is arranged at the bottom of the box, and outside surface has movable support frame at the bottom of the box.Wherein, main circuit board links to each other with 2440 core boards, DC/DC transducer, CCD scanner, LCD, display interface device plate respectively; 2440 core boards link to each other with RSS-232 serial ports 0, RSS-232 serial ports 1, USB interface, the display interface device of main circuit respectively; 2440 core boards connect DC/DC transducer 3.3V, instrument keyboard respectively; The USB interface of main circuit board connects CCD scanner and DC/DC transducer 5V, and display interface device connects LCD; The external power source commutation circuit links to each other with external power source with DC/DC transducer 5V, DC/DC transducer 3.3V, battery respectively.This device can connect printer by cable, and external D.C. regulated power supply, USB mouth can connect USB flash disk.Above-mentioned device all can have been bought on market.

The present invention is compared to the good effect of prior art: this device adopts the Chinese and English operation interface, can be from positive and negative two scanning direction bar code symbols.Can differentiate automatically by the code system of recognition bar code; Can detect multiple code systems such as bar code (EAN-13 sign indicating number, EAN-8 sign indicating number, UPC-A sign indicating number, UPC-E sign indicating number), 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 (CODABAR sign indicating number), books and periodicals sign indicating number.Provide bar code hierarchical detection method to detect data.Can select store/not store testing result; Can store the testing result that is no less than 1000 bar code symbols.Can select single/repeatedly scanning (maximum 10 times); When selecting repeatedly to scan, the average rank that can repeatedly be scanned.Chinese and English actions menu and result show.Print decode results and detect data.Has automatic/hand shutdown function.Low-power consumption, No. 5 powered battery of four joints have battery low pressure warning function.Also can power by external power supply.Have the RS-232 communication interface, can be connected with printer; Have the USB communication interface, can connect USB flash disk.

Description of drawings

Fig. 1 connects diagrammatic cross-section for this reality has the new internal structure.

Fig. 2 is the utility model each several part position connection diagram.

Fig. 3 is the utility model software program flow chart.

Embodiment

As shown in Figure 1, connect diagrammatic cross-section for the utility model inner structure.Lid 1 links to each other with front panel as seen from the figure, and front panel has keypad function simultaneously, and the front in lid 1 is equipped with interface board 2, and LPT is arranged on it, the external power supply jack, and interface board 2 back are LCD 3 and the main circuit boards 4 that link to each other with front panel.Main circuit and DC/ DC transducer 5,2440 core boards 6 and lid 1 front panel fit together, back in lid 1 links to each other with CCD scanner 7, have at the bottom of the box 8 below the lid 1, battery case 9 is arranged at the bottom of the box, outside surface has movable support frame (not drawing among the figure) at the bottom of the box.During scanning, the rayed that light source sends is reflected by bar code symbol on the bar code symbol surface, and reflected light is incident upon on the CCD photoelectric commutator by the optical system of CCD scanner 7, is transformed into electric signal.In the scanning process, intensity of reflected light changes with the difference of each bar/empty reflectivity, and the size of electric signal also changes thereupon, and the value of electric signal is directly proportional with reflectivity.Each several part position connection diagram as shown in Figure 2 signal as can be known is connected to 2440 core boards 6 on the main circuit board 4 by USB interface after CCD photoelectric commutator 7 conversion, 2440 core boards 6 calculate the reflectivity and the size of each bar/sky according to the size of numerical value, in view of the above decoding.According to the regulation of relevant bar code standard, measured value is analyzed, judged simultaneously, provide evaluation result tested bar code symbol printing quality.This evaluation result is connected on the LCD 3 by display interface device, sees also Fig. 3 about the software program flow chart of said system.

Technical indicator about this device is as follows:

Measurement light source wavelength: 660nm ± 10nm

Measure aperture (effective aperture): 0.076mm (3mil) 0.127mm (5mil) 0.152mm (6mil)

0.254mm(10mil) 0.508mm(20mil)

Survey memory capacity as a result: be no less than 1000 testing results

Result's output: in/English display: the duplicate rows liquid crystal display

Decoding situation indication: double-colored decoding pilot lamp

Auditory tone cues: hummer

Print testing result: RS-232 interface

The detection data derive: USB interface.

Claims (3)

1. a portable bar code detector includes lid and is close to the front panel that has keypad function simultaneously, and the front in lid is connected with interface board, and LPT, outlet are arranged on the interface board, and the interface board back is connected with LCD and main circuit board; It is characterized in that: the front panel of its main circuit board and DC/DC transducer, 2440 core boards and lid fits together, and links to each other with the CCD scanner in the back of lid, has at the bottom of the box below the lid, battery case is arranged at the bottom of the box, and outside surface has movable support frame at the bottom of the box; Wherein, main circuit board links to each other with 2440 core boards, DC/DC transducer, CCD scanner, LCD, display interface device plate respectively; 2440 core boards link to each other with RSS-232 serial ports 0, RSS-232 serial ports 1, USB interface, the display interface device of main circuit respectively; 2440 core boards connect DC/DC transducer 3.3V, instrument keyboard respectively; The USB interface of main circuit board connects CCD scanner and DC/DC transducer 5V, and display interface device connects LCD; The external power source commutation circuit links to each other with external power source with DC/DC transducer 5V, DC/DC transducer 3.3V, battery respectively.

2. detector as claimed in claim 1 is characterized in that: described detector can connect printer by cable, and external D.C. regulated power supply, USB mouth can connect USB flash disk.

3. detector as claimed in claim 1 is characterized in that: the technical indicator of described detector is:

The result exports demonstration: the duplicate rows liquid crystal display;

Decoding situation indication: double-colored decoding pilot lamp;

Auditory tone cues: hummer;

Print testing result: RS-232 interface;

The detection data derive: USB interface.

Images