CN206601711U - Scanners for 1D and 2D barcodes - Google Patents

Abstract

The utility model provides a can scan scanner of one-dimensional and two-dimensional bar code, include: the scanning device is provided with a circuit board, and the circuit board is loaded with a micro control processing module, an image acquisition module and a laser optical module; the key point of the present invention is that the laser module can emit a linear laser beam and project the linear laser beam onto a bar code, and the linear laser beam is used as an indication beam (pointer), but when the scanning device is to read the bar code, the linear laser beam is turned off immediately, so as not to interfere with the bar code, and the reading efficiency of the scanner is affected.

Description

Scanners for 1D and 2D barcodes

technical field

A barcode scanner for emitting a linear laser light as an indicating light (indicator), and reading one-dimensional barcodes and two-dimensional barcodes, the utility model particularly relates to a linear laser indicating light As a scanning pointer (light mark), and can not be interfered by laser light barcode scanner.

Background technique

At present, there are many barcode scanners on the market that can read one-dimensional barcodes and two-dimensional barcodes, and these scanners must align the barcode with a light mark, such as dots, frames or cross marks, etc. According to this, no matter When decoding one-dimensional or two-dimensional barcodes, it is necessary to capture the reflected light signal of the entire barcode. As disclosed in the "Projection Barcode Scanner" No. TWM496810 of the Taiwan Utility Model Patent Publication No., its barcode scanner generates a After the light source, it is projected to the barcode recognition area of the working platform below the barcode scanner, and it uses the projected light source as a light mark aimed at the barcode. The disclosure is also the same; however, when the user is reading a one-dimensional barcode, if the light mark is a linear laser light, it only needs to capture the reflected light signal of a part of the barcode to decode, but because the laser light The brightness of the dots is unevenly distributed, so if the linear laser light generated by a refracting mirror is used as a pointer to read the barcode, it will easily generate noise due to the uneven brightness distribution of the laser light dots, which will cause the scanner to fail. Therefore, there is currently no barcode scanner that uses linear laser light as a pointer on the market. Therefore, how to use a linear laser indicator light as an indicator for a barcode scanner capable of reading both one-dimensional and two-dimensional barcodes, and prevent the scanner from being interfered by the laser light, which affects the reading efficiency, remains to be solved. question.

Utility model content

In view of the above-mentioned problems, based on years of experience in researching barcode scanners, the present inventors aimed at barcode scanners with linear laser light as indicating light (indicator), how to prevent it from being interfered by laser light and affecting reading Therefore, the main purpose of this utility model is to provide a scanning one-dimensional and two-dimensional bar code that uses linear laser light as the indicator light (pointer) and is not interfered by laser light. scanner.

In order to achieve the above-mentioned purpose, the scanner capable of scanning one-dimensional and two-dimensional barcodes of the present utility model mainly includes: a housing and a scanning device; any side of the housing is provided with a function key, a start key and a light indicator The scanning device has a circuit board, and the circuit board carries a micro-control processing module and a laser light module (used to emit a linear laser light) electrically connected to the micro-control processing module, an image capture module 1. A reading confirmation light source module; the start button can actuate the scanning device after being pressed, and when the utility model is implemented, in order to prevent the scanning device from being interfered by the laser light and affect the reading efficiency, the scanning device uses a linear laser The emitted light is used as the indicator light (pointer), and when the scanning device is ready to read a barcode (that is, ready to sample), it immediately drives the laser light module to turn off the linear laser light, and allows the image capture module to receive various light sources. The reflected light reflected by the barcode is then converted into an electronic image information (electrical signal), and then transmitted to the micro-control processing module for decoding, and when the micro-control processing module decodes the electronic image information, the electronic The image information is sampled from part of the image of the barcode. Therefore, after the implementation of the utility model, it does provide a scannable one-dimensional and two-dimensional scanner that uses linear laser light as a pointer and is not affected by the interference of laser light. barcode scanner. At the same time, the utility model can solve the problem that existing scanners capable of scanning one-dimensional and two-dimensional barcodes all adopt full-frame image sampling and decoding based on the problem of low scanning efficiency, thereby increasing the efficiency of scanning one-dimensional barcodes.

A scanner capable of scanning one-dimensional and two-dimensional barcodes is used to scan a barcode to obtain barcode information of the barcode, which includes:

A housing, either side of the housing is provided with a start key;

A scanning device is arranged in the casing, the scanning device has a circuit board, and the circuit board is electrically connected to the activation key, and the circuit board carries a micro control processing module, a laser light module and an image The capture module, the micro-control processing module, the laser light module and the image capture module are respectively electrically connected to the micro-control processing module, and the start key can drive the laser light module to emit a linear beam after being pressed. shoot the indicating light to aim at the barcode, the image capture module is used to receive the reflected light of the barcode generated by the barcode, and convert the reflected light of the barcode into an electronic image information, and then transmit the electronic image information to the microcontroller processing modules; and

The micro-controlling processing module is used to perform one-dimensional image decoding on the electronic image information. If the decoding fails, the micro-controlling processing module determines that the barcode belongs to a two-dimensional barcode, and immediately performs two-dimensional image decoding on the electronic image information. code.

Wherein, the circuit board also carries a reading confirmation light source module electrically connected to the micro-control processing module, and an indicator light is formed on either side of the casing, when the micro-control processing module decodes After success, it can be driven to generate a colored light, and the colored light can be projected from the light indicating part to confirm that the decoding operation of the barcode has been completed.

Wherein, when the micro-control processing module performs one-dimensional decoding on the electronic image information, the electronic image information is sampled from a part of the image of the barcode.

Wherein, when the micro-controlling processing module performs two-dimensional image decoding on the electronic image information, the electronic image information is sampled from the full-width image of the barcode.

Wherein, the scanning device also includes a power supply module, which is electrically connected with the circuit board, and is used to provide the required power for the scanning device to operate.

Wherein, the image capture module is a CMOS image capture module or a CCD image capture module.

Wherein, the reflected light of the barcode is the reflected light generated by the barcode in various light sources in an environment.

Wherein, the circuit board also carries a light compensation module and a brightness sensing module electrically connected to the micro-control processing module, the brightness sensing module is used for sensing the brightness of the working environment, and the light compensation module is used for Complements brightness.

Wherein, if the micro-control processing module fails to decode the two-dimensional image, the laser light module is driven to emit the linear laser indicating light, and the time from turning off to turning on the linear laser indicating light source is less than 1/ 16 seconds.

Description of drawings

FIG. 1 is a perspective view of a scanner of the present invention.

Fig. 2 is a structural block diagram of the scanning device of the present invention.

FIG. 3 is a diagram of the physical components of the scanning device of the present invention.

Fig. 4 is the implementation flow diagram (1) of the utility model.

Fig. 5 is the implementation flow diagram (2) of the utility model.

Fig. 6 is the implementation schematic diagram (1) of the utility model.

Fig. 7 is the implementation schematic diagram (2) of the utility model.

Explanation of reference signs

1 scanner

11 housing

111 Start button

112 Function keys

113 Light Indicating Department

12 Scanner

121 circuit board

1211 Microcontroller Processing Module

1212 laser light module

12121 First lens

1213 optical channel module

1214 Image capture module

12141 reflective structure

1215 Read confirmation light source module

12151 Second lens

1216 Optical Compensation Module

12161 Third lens

1217 Brightness sensing module

122 power module

B1 1D barcode

B2 2D barcode

S1 Indicator Light Action Steps

S2 level signal confirmation steps

S3 Generate reflected light source step

S4 Step of receiving reflected light source

S5 decoding steps

S51 Analyzing scanning area steps

S52 Step of judging whether it can be decoded

S53 Steps for analyzing full-frame images

S54 Step of judging whether it can be decoded

S55 barcode decoding success steps

S6 read confirmation steps

L1 linear laser pointer light

L2 is the first reflected ray.

detailed description

In order to enable your examiner to clearly understand the purpose, technical features and effects of the utility model after its implementation, the following explanations are given together with the accompanying drawings for illustration, please refer to it.

Please refer to Fig. 1, shown in the figure is the three-dimensional appearance diagram of the scanner provided by the utility model, the scanner 1 that can scan one-dimensional and two-dimensional bar code provided by the utility model can be used for scanning a bar code, mainly includes : a housing 11 and a scanning device 12; either side of the housing 11 can be provided with a start key 111, a function key 112 and a light indicator 113, and the start key 111 can actuate the scanning device 12 after being pressed action, the function key 112 can make the scanning device 12 set various functions after being pressed; An electrical signal; the scanner 1 can be wired or wireless, and the barcode can be a one-dimensional barcode or a two-dimensional barcode.

Please refer to Fig. 2 and Fig. 3, the structural composition block diagram and the physical component diagram of the scanning device shown in the figure are shown in the figure, please refer to Fig. 1 again, as shown in Fig. 2, the scanning device 12 is mainly composed of electrical A connected circuit board 121 and a power supply module 122 are formed. The power supply module 122 is electrically connected to the circuit board 121, and it is used to provide the required power for the operation of the scanning device 12, and the power supply module 122 can be a rechargeable battery. (such as a lithium battery) or an AC/DC power converter; the circuit board 121 is electrically connected to the start key 111, and as shown in FIG. , and a laser light module 1212, an image capture module 1214, a read confirmation light source module 1215, a light compensation module 1216, and a brightness sensing module 1217 that are electrically connected to the micro-control processing module 1211. In addition, The front end (projection end) of the laser light module 1212 is provided with a first lens 12121, the image capture module 1214 may have a reflective structure 12141, and the upper (projection end) group of the reading confirmation light source module 1215 is provided with a second lens 12151, The front end group of the optical compensation module 1216 is provided with a third lens 12161, but the implementation is not limited thereto; the laser light module 1212 can emit a laser light after being activated, which can form a linear laser indicator after passing through the first lens 12121 Light for aligning the barcode; the optical channel module 1213 can receive the light projected from the outside or the reflected light of the barcode reflected by the barcode. In addition, the optical channel module 1213 can reflect the reflected light of the barcode to the In the channel, the end of the optical channel module 1213 is connected to the image capture module 1214; the image capture module 1214 is used to convert the reflected light of the barcode received by the optical channel module 1213 into an electronic image information through photoelectricity; the micro control processing module 1211 It is used for one-dimensional decoding and two-dimensional decoding of electronic image information; after the reading confirmation light source module 1215 is driven, it is used to generate a colored light (such as green) and turn off immediately, and is indicated by the light signal of the housing 11 Part 113 is projected out for the user to confirm that the decoding operation of the aligned barcode has been completed; the brightness sensing module 1217 is used to sense the brightness of the working environment, and the light compensation module 1215 is used to supplement light; the image capture module 1214 It can be a CMOS image capture module or a CCD image capture module, but it is not limited to this, and it is specifically stated in advance.

Please refer to Fig. 4, shown in the figure is the implementation flow schematic diagram (1) of the implementation method of the present utility model, the action flow of the scanner 1 that can scan one-dimensional and two-dimensional barcodes provided by the utility model is as follows:

(1) Indicating light source action step S1: First, press a start button 111 on the scanner 11 to drive a micro-control processing module 1211 of a scanning device 12 to transmit an action information, and then drive a laser light module 1212 to project a Laser light, after the laser light passes through the first lens 12121, a linear laser indicating light L1 is formed (please refer to the implementation schematic diagrams of Fig. B1 or B2), after that, an image capture module 1214 is ready to execute the level signal confirmation step S2, and the linear laser indicator light L1 is only for the user to pass through its prominent linear pointer, so as to quickly align the barcode;

(2) Level signal confirmation step S2: Inheriting the indicator light source action step S1, when the linear laser indicator light L1 is projected on the barcode, a first reflected light L2 will be generated and received by the image capture module 1214 for After the image capture module 1214 confirms that the linear laser indicator light L1 is aligned with the barcode, it can output a level confirmation signal to the micro-control processing module 1211. In a preferred embodiment, if the micro-control processing module 1211 receives the level Confirm the signal, then the micro-control processing module 1211 will synchronously transmit a stop action information to the laser light module 1212, so that the laser light module 1212 immediately turns off the laser light, so the linear laser indicator light L1 also disappears synchronously, thereafter, the utility model Continue to execute the step S3 of generating a reflected light source. While the linear laser indicating light L1 is projected on the barcode, the image capture module 1214 normally monitors whether there is any change in the first reflected light L2, such as an optical reflection phenomenon similar to the barcode information. If there is no change, Then the utility model will continue to carry out the action step S1 of indicating the light source until the image capture module 1214 detects that the first reflected light L2 changes, and the time from turning off to turning on the linear laser indicating light source L1 is lower than the persistence of human vision. time (about less than 1/16 second);

(3) Step S3 of generating reflected light source: Step S2 for confirming the positioning quasi-signal. Because the barcode is normally under an ambient light source, the barcode will naturally reflect the light source, and the reflected light of the barcode will be generated. More specifically, due to The light reflectivity of the black and white parts of the barcode (one-dimensional barcode and two-dimensional barcode) is different, so the amount of light reflected by the white part of the barcode is large, and the amount of light reflected by the black part of the barcode is small, which leads to the image capture module 1214 by The amount of light received by the barcode is different, and the above-mentioned ambient light source can also refer to the visible light generated by a light-emitting diode (not shown in the figure) arranged on the circuit board 121. Hereafter, the utility model Continue to execute the step S4 of receiving the reflected light source. In the case of a preferred embodiment, after the barcode generates barcode reflected light, the micro-control processing module 1211 can drive a brightness sensing module 1217 to sense the brightness of the on-site working environment. If the brightness of the on-site working environment is insufficient, the micro-control processing module 1211 can drive a light compensation module 1216 to supplement the light, so that the barcode reading operation can be carried out smoothly.

(4) Step S4 of receiving the reflected light source: when the barcode generates a barcode reflected light, the barcode reflected light will enter the optical channel module 1213 and then be projected on the image capture module 1214 ;

(5) Decoding step S5: Step S4 of receiving the reflected light source, the image capture module 1214 then transmits the reflected light of the barcode in the form of image information (an electronic image information) to the micro control processing module 1211 for decoding, and then obtains the information on the barcode recorded information;

(6) Read confirmation step S6: When the decoding step S5 is completed, the micro-control processing module 1211 drives a read confirmation light source module 1215 to generate a colored light (such as green light) to allow the user to confirm the barcode The device 11 has completed decoding and successfully read the barcode.

(7) As mentioned above, since the time from turning off the linear laser indicating light source L1 to turning on the linear laser indicating light source L1 is lower than the duration of human vision (about less than 1/16 second), according to this, the user When in use, it feels the same as the traditional laser barcode scanner, but the utility model does not actually use laser light to read, but uses the ambient light source as the reading light source. Therefore, the barcode required for each scan The operation time can be greatly reduced, thereby solving the problem that if the existing laser barcode scanner uses laser light as the reading pointer, it will be interfered by the laser light and affect the reading efficiency.

Please refer to FIG. 5 , which shows a schematic diagram (2) of the implementation process of the decoding step S5 of the present utility model. When decoding, the decoding step S5 further includes the following action flow:

(1) Step S51 of analyzing the scanning area: Please refer to the implementation schematic diagram in Figure 6. The utility model first presets that the barcode belongs to the one-dimensional barcode B1, so when the micro-control processing module 1211 prepares for one-dimensional decoding of the electronic image information, the The above-mentioned electronic image information is sampled in a part of the image of the one-dimensional barcode B1, thereby improving the scanning efficiency of the one-dimensional barcode;

(2) Judging whether it is decodable Step S52: Step S51 of analyzing the scanning area, if the decoding result of the micro-control processing module 1211 is "successful decoding", it means that the barcode does belong to the one-dimensional barcode B1, and the utility model is continued Execute the barcode decoding success step S55; if the result is "decoding failure", it means that the barcode should belong to the two-dimensional barcode B2, and the utility model continues to execute the step S53 of analyzing the full-width image;

(3) Step S53 of analyzing the full-frame image: Please refer to the implementation schematic diagram in FIG. Sampling the full-frame image for the two-dimensional image decoding operation, and proceeding to step S54 of judging whether it can be decoded;

(4) Judging whether it can be decoded Step S54: Step S53 for analyzing the full-frame image. If the decoding result of the micro-control processing module 1211 is "decoding successful", it means that the barcode really belongs to the two-dimensional barcode B2, and the utility model is the continuation Execute the barcode decoding success step S55; if the result is "decoding failure", the utility model will execute the instruction light source action step S1, that is, the micro-control processing module 1211 drives the laser light module 1212 to project the laser light, and then forms The linear laser indicating light L1, and the time from turning off to turning on the linear laser indicating light L1 is less than 1/16 second;

(5) Barcode decoding success Step S55: After the micro-control processing module 1211 completes the decoding operation of the one-dimensional or two-dimensional barcode, in order to allow the user to confirm that the decoding operation has been completed, the micro-control processing module 1211 will drive the reading confirmation light source module Step 1215 is for the utility model to continue to execute the read confirmation step S6.

As can be seen from the above, the scanner provided by the utility model that can scan one-dimensional and two-dimensional barcodes mainly includes: a housing and a scanning device; either side of the housing is provided with a function key, a start key and a Light indicating part; a circuit board is arranged in the scanning device, and the circuit board mainly carries a micro-control processing module and a laser light module electrically connected to the micro-control processing module (used to emit a linear laser as a pointer) Indicating light), an image capture module, and a reading confirmation light source module; after the start key is pressed, the scanning device can be activated, and the image capture module can receive the reflected light of a bar code reflected by a bar code and read the bar code After the reflected light is converted into an electronic image information (electrical signal), it is then transmitted to the micro-control processing module for decoding. When the utility model is implemented, in order to prevent the scanning device from being interfered by the laser light and affecting the reading efficiency, the scanning The device uses linear laser light as the indicator light (pointer), and when the scanning device is ready to read a bar code (that is, ready to take a sample), it immediately drives the laser light module to turn off the linear laser light, and allows the image capture module to receive the The reflected light of the barcode reflected by the barcode is converted into an electronic image information (electrical signal), and then transmitted to the micro-control processing module for decoding, and the micro-control processing module performs one-dimensional decoding of the electronic image information When the electronic image information is sampled from the partial image of the barcode, if the decoding fails, the micro-control processing module judges that the barcode belongs to a two-dimensional barcode, and immediately performs two-dimensional image decoding on the electronic image information. Instead of reading with laser light, ambient light is used as the light source for capturing barcode images, so the action time required for each scan of the barcode can be greatly reduced. Therefore, after the implementation of the utility model, it is indeed provided. The laser beam is a pointer, and the scanner that can scan one-dimensional and two-dimensional barcodes is not affected by the laser light interference; the utility model can also solve the problem of existing scanners that can scan one-dimensional and two-dimensional barcodes , all take full-frame image sampling, and decode according to the problem of low scanning efficiency, which can increase the efficiency of scanning one-dimensional barcodes.

However, the above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the scope of implementation of the present utility model; Changes and modifications should all fall within the protection scope of the present utility model.

To sum up, the technical effects of this utility model are industrial applicability, novelty, and advancement; the applicant files an application for a utility model patent with your bureau in accordance with the provisions of the Patent Law.

Claims (9)

1. A scanner that can scan one-dimensional and two-dimensional barcodes, for scanning a barcode, to obtain the barcode information of the barcode, it is characterized in that, comprising: A housing, either side of the housing is provided with a start key; A scanning device is arranged in the casing, the scanning device has a circuit board, and the circuit board is electrically connected to the activation key, and the circuit board carries a micro control processing module, a laser light module and an image The capture module, the micro-control processing module, the laser light module and the image capture module are respectively electrically connected to the micro-control processing module, and the start key can drive the laser light module to emit a linear beam after being pressed. shoot the indicating light to aim at the barcode, the image capture module is used to receive the reflected light of the barcode generated by the barcode, and convert the reflected light of the barcode into an electronic image information, and then transmit the electronic image information to the microcontroller processing modules; and The micro-controlling processing module is used to perform one-dimensional image decoding on the electronic image information. If the decoding fails, the micro-controlling processing module determines that the barcode belongs to a two-dimensional barcode, and immediately performs two-dimensional image decoding on the electronic image information. code. 2. The scanner capable of scanning one-dimensional and two-dimensional barcodes as claimed in claim 1, wherein the circuit board also carries a reading confirmation light source module electrically connected to the micro-control processing module, and Either side of the housing is additionally formed with a light indicating part, when the micro-control processing module is successfully decoded, it can be driven to generate a colored light, and the colored light can be projected from the light indicating part to confirm The decoding job for this barcode is complete. 3. The scanner for scanning one-dimensional and two-dimensional barcodes according to claim 1, wherein when the micro-control processing module performs one-dimensional decoding on the electronic image information, the electronic image information is sampled from the barcode partial image. 4. The scanner for scanning one-dimensional and two-dimensional barcodes according to claim 1, wherein when the micro-control processing module performs two-dimensional image decoding on the electronic image information, the electronic image information is sampled from the barcode full frame image. 5. The scanner capable of scanning one-dimensional and two-dimensional barcodes as claimed in claim 1, wherein the scanning device further comprises a power supply module, which is electrically connected to the circuit board to provide the operation of the scanning device power required at the time. 6. The scanner capable of scanning one-dimensional and two-dimensional barcodes as claimed in claim 1, wherein the image capture module is a CMOS image capture module or a CCD image capture module. 7 . The scanner capable of scanning one-dimensional and two-dimensional barcodes as claimed in claim 1 , wherein the reflected light of the barcode is the reflected light generated by the barcode in various light sources in an environment. 8. The scanner capable of scanning one-dimensional and two-dimensional barcodes as claimed in claim 1, wherein the circuit board also carries a light compensation module and a brightness sensor which are electrically connected to the micro-control processing module. A detection module, the brightness sensing module is used to sense the brightness of the working environment, and the light compensation module is used to supplement the brightness. 9. The scanner capable of scanning one-dimensional and two-dimensional barcodes as claimed in claim 1, wherein if the micro-control processing module fails to decode the two-dimensional image, the laser light module is driven to emit The linear laser indicates light, and the time from turning off to turning on the linear laser indicating light source is less than 1/16 second.