CN105574457A - Light supplementing method and device for scanning terminal - Google Patents
Light supplementing method and device for scanning terminal Download PDFInfo
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- CN105574457A CN105574457A CN201510938959.4A CN201510938959A CN105574457A CN 105574457 A CN105574457 A CN 105574457A CN 201510938959 A CN201510938959 A CN 201510938959A CN 105574457 A CN105574457 A CN 105574457A
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- 230000001502 supplementing effect Effects 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000013589 supplement Substances 0.000 claims description 47
- 238000010586 diagram Methods 0.000 description 6
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10554—Moving beam scanning
- G06K7/10564—Light sources
- G06K7/10584—Source control
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10712—Fixed beam scanning
- G06K7/10722—Photodetector array or CCD scanning
- G06K7/10732—Light sources
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10712—Fixed beam scanning
- G06K7/10762—Relative movement
- G06K7/10772—Moved readers, e.g. pen, wand
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses a light supplementing method and a light supplementing device for a scanning terminal. The method comprises the steps of after powering on a scanning head, acquiring the luminance of a current environment via a light sensor, and determining the luminance of supplementing light according to the luminance of the current environment, thus the light supplementing to the scanning head is achieved by a light supplementing lamp according to the luminance of the supplementing light when the scanning head is scanning, the problem of failed scanning caused by insufficient light during scanning can be solved, and the success rate of scanning can be improved.
Description
Technical Field
The invention relates to the technical field of scanning, in particular to a light supplementing method and device for a scanning terminal.
Background
The scanning terminal is used for reading information contained in the bar code and can be used for scanning one-dimensional and two-dimensional bar codes. With the rapid development of the technology, the handheld scanning terminal is more and more popular, and is widely applied to the environments of supermarkets, logistics express delivery, hospitals, libraries and the like for scanning bar codes of commodities and documents.
In the prior art, when scanning, the scanning terminal firstly powers on the scanning head and then performs scanning, but if the brightness of the environment where the scanning terminal is located is insufficient, scanning failure may be caused.
Disclosure of Invention
The invention provides a light supplementing method and device for a scanning terminal, which can solve the problem of scanning failure caused by insufficient light during scanning.
In order to achieve the above object, the present invention provides a light supplement method for a scanning terminal, where the scanning terminal is provided with a scanning head, and the method includes:
after the scanning head is powered on, the brightness of the current environment is obtained through the light sensor;
determining the luminance of the supplementary lighting according to the luminance of the current environment;
and scanning through the scanning head, and supplementing light to the scanning head through a light supplementing lamp according to the light supplementing brightness during scanning.
Optionally, the method further includes:
judging whether the scanning is successful;
when the scanning fails, adjusting the fill-in light brightness to obtain adjusted fill-in light brightness;
and scanning again through the scanning head, and supplementing light to the scanning head through the light supplementing lamp according to the adjusted light supplementing brightness during scanning.
Optionally, the determining the fill-in luminance according to the luminance of the current environment includes:
judging whether the current ambient brightness is lower than a preset brightness threshold value;
and when the current ambient brightness is lower than a preset brightness threshold, determining the fill-in light brightness corresponding to the current ambient brightness by using the preset corresponding relation between the ambient brightness and the fill-in light brightness.
Optionally, the determining the fill-in luminance according to the luminance of the current environment includes:
judging whether the current ambient brightness is lower than a preset brightness threshold value;
and when the current ambient brightness is lower than a preset brightness threshold, increasing the brightness of the current ambient brightness by one unit brightness to be used as the fill-in brightness.
Optionally, when the scanning fails, adjusting the fill-in luminance to obtain an adjusted fill-in luminance includes:
and the brightness of the fill-in light after being increased by one unit brightness is used as the adjusted fill-in light brightness.
Optionally, the preset corresponding relationship between the ambient brightness and the fill-in light brightness includes:
a corresponding table of ambient brightness and fill light brightness; or,
the ambient brightness and fill light brightness.
The invention provides a light supplementing device of a scanning terminal, wherein the scanning terminal is provided with a scanning head, and the device comprises:
the photosensitive module is used for acquiring the brightness of the current environment through the light sensor after the scanning head is powered on;
the supplementary lighting module is used for determining supplementary lighting brightness according to the brightness of the current environment;
and the scanning module is used for scanning through the scanning head and supplementing light to the scanning head through a light supplementing lamp according to the light supplementing brightness during scanning.
Optionally, the apparatus further comprises: the device comprises a judging module and an adjusting module;
the judging module is used for judging whether the scanning is successful;
the adjusting module is configured to adjust the fill-in luminance when the scanning fails to obtain an adjusted fill-in luminance;
and the scanning module is also used for scanning again through the scanning head and supplementing light to the scanning head through the light supplementing lamp according to the adjusted light supplementing brightness during scanning.
Optionally, the light supplement module includes:
the brightness judgment submodule is used for judging whether the current environment brightness is lower than a preset brightness threshold value;
and the brightness determination submodule is used for determining the fill-in light brightness corresponding to the current ambient brightness by utilizing the preset corresponding relation between the ambient brightness and the fill-in light brightness when the current ambient brightness is lower than a preset brightness threshold value.
Optionally, the light supplement module includes:
the brightness judgment submodule is used for judging whether the current environment brightness is lower than a preset brightness threshold value;
and the brightness determination sub-module is used for increasing the current ambient brightness by one unit brightness to be used as the fill-in light brightness when the current ambient brightness is lower than a preset brightness threshold.
Optionally, the adjusting module is configured to:
and the brightness of the fill-in light after being increased by one unit brightness is used as the adjusted fill-in light brightness.
Optionally, the preset corresponding relationship between the ambient brightness and the fill-in light brightness includes:
a corresponding table of ambient brightness and fill light brightness; or,
the ambient brightness and fill light brightness.
In summary, the present invention provides a light supplementing method and device for a scanning terminal, in which after a scanning head is powered on, a light sensor is used to obtain the brightness of the current environment, and the light supplementing brightness is determined according to the brightness of the current environment, so that a light supplementing lamp can be used to supplement light to the scanning head according to the light supplementing brightness when the scanning head is used for scanning, thereby solving the problem of scanning failure caused by insufficient light during scanning, and improving the success rate of scanning.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic flow chart of a light supplement method for a scanning terminal according to a further embodiment of the present invention;
fig. 2 is a schematic flow chart of a light supplement method for a scanning terminal according to another embodiment of the present invention;
fig. 3 is a block diagram of a light supplement device of a scanning terminal according to a further embodiment of the present invention;
fig. 4 is a block diagram of a light supplement device of another scanning terminal according to an embodiment of the present invention;
fig. 5 is a block diagram of a light supplement module according to the embodiment shown in fig. 3.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
Fig. 1 is a schematic flow chart of a Light supplement method for a scanning terminal according to an embodiment of the present invention, where the scanning terminal is provided with a scanning head, a Light Sensor (Light-Sensor) and a Light supplement lamp, and referring to fig. 1, the method may include the following steps:
step 101, after the scanning head is powered on, the brightness of the current environment is obtained through the light sensor.
The scanning head is normally closed before scanning to save electric energy, so that when scanning is needed, the scanning head is firstly powered on, and the scanning head is started.
And step 102, determining the fill-in light brightness according to the brightness of the current environment.
The light supplement lamp can be arranged on the scanning terminal or can be an external light supplement lamp.
And 103, scanning through the scanning head, and supplementing light to the scanning head according to the light supplementing brightness through a light supplementing lamp during scanning.
In summary, the present invention provides a light supplement method for a scanning terminal, in which after a scanning head is powered on, brightness of a current environment is obtained through a light sensor, and light supplement brightness is determined according to the brightness of the current environment, so that when scanning is performed through the scanning head, the scanning head can be supplemented with light according to the light supplement brightness through a light supplement lamp, a problem of scanning failure caused by insufficient light during scanning can be solved, and a success rate of scanning is improved.
Fig. 2 is a schematic flow chart of a light supplement method for a scanning terminal according to another embodiment of the present invention, where the scanning terminal is provided with a scanning head, a light sensor, and a light supplement lamp, and referring to fig. 2, the method may include the following steps:
step 201, the scanning head is powered on.
The scanning head is normally closed before scanning to save electric energy, so that when scanning is needed, the scanning head is firstly powered on, and the scanning head is started. Illustratively, the scan head may include: an optical pen scanner, a CCD (charge coupled device) scanner, a laser scanner, an image-type red light scanner, or a camera.
Step 202, acquiring the brightness of the current environment through a light sensor.
The light sensor, also called a brightness sensor, is capable of sensing ambient light conditions.
And 203, determining the fill-in light brightness according to the brightness of the current environment.
By way of example, this may be achieved by, in another implementation:
firstly, whether the current ambient brightness is lower than a preset brightness threshold value is judged. The brightness threshold is preset in the scanning device, and the brightness threshold may be set according to actual needs, for example, a critical brightness at which the scanning device cannot acquire a valid image may be set as the brightness threshold, which is used to indicate that the scanning device will fail to scan when the brightness threshold is lower than the brightness threshold.
Secondly, when the current ambient brightness is not lower than the brightness threshold, the fill-in brightness is set to be zero, i.e., no fill-in light is needed, so that step 206 can be directly performed. And when the current ambient brightness is lower than the brightness threshold, determining the fill-in light brightness corresponding to the current ambient brightness by using the preset corresponding relation between the ambient brightness and the fill-in light brightness.
The preset corresponding relationship between the ambient brightness and the fill-in light brightness may be a corresponding table of the ambient brightness and the fill-in light brightness, the corresponding table is pre-stored in the scanning terminal, and the corresponding table records fill-in light brightness corresponding to different ambient brightness ranges. When the correspondence table is used to determine the fill-in luminance corresponding to the current ambient luminance, which luminance range the current ambient luminance belongs to in the correspondence table may be determined first, and after the luminance range the current ambient luminance belongs to in the correspondence table is determined, the corresponding fill-in luminance may be determined according to the correspondence table. For example, the correspondence table may be obtained by analyzing empirical data and/or experimental data, or may be obtained according to a preset algorithm.
Alternatively, the preset corresponding relationship between the ambient brightness and the fill-in light brightness may also be a functional relationship between the ambient brightness and the fill-in light brightness, for example, the functional relationship may be a functional model established by using a preset algorithm (e.g., a learning algorithm) according to empirical data and/or experimental data.
In another implementation:
firstly, whether the current ambient brightness is lower than a preset brightness threshold value is judged.
Secondly, when the current ambient brightness is not lower than the brightness threshold, the fill-in brightness is set to be zero, i.e., no fill-in light is needed, so that step 206 can be directly performed. When the current ambient brightness is lower than the brightness threshold, the brightness obtained by increasing the current ambient brightness by one unit brightness is used as the fill-in brightness, and the unit brightness can be calculated according to empirical data and/or experimental data or by using a preset algorithm.
And 204, setting the light supplement lamp according to the light supplement brightness.
The light supplement lamp can be arranged on the scanning terminal or can be an external light supplement lamp. For example, the supplementary lighting lamp may be an LED (light emitting diode) supplementary lighting lamp.
And step 205, scanning by the scanning head, and supplementing light to the scanning head according to the light supplementing brightness by a light supplementing lamp during scanning.
And step 206, scanning by the scanning head, and performing no light supplement during scanning.
Step 207, determine whether the scan is successful.
Illustratively, whether the scanning is successful may be determined by determining whether a valid image is acquired, wherein the valid image may be an image from which the identification code can be parsed, and in the present embodiment, the identification code includes but is not limited to: one-dimensional bar codes, two-dimensional codes and other graphic identifiers with preset information. When the scanning fails, performing step 208 to step 209; and when the scanning is successful, performing steps 210-211.
And 208, adjusting the fill-in light brightness to obtain the adjusted fill-in light brightness.
For example, the luminance obtained by increasing the fill-in luminance by one unit luminance may be used as the adjusted fill-in luminance. That is, once the scanning in step 205 or step 206 fails, the luminance of the supplementary lighting is increased by one unit luminance again, and step 209 is performed.
And 209, scanning again through the scanning head, and supplementing light to the scanning head through the light supplementing lamp according to the adjusted light supplementing brightness during scanning.
Illustratively, after step 209, step 207 may be performed again until the scan is successful, and step 210 is performed.
And step 210, analyzing the scanned effective image to obtain the identification code in the effective image.
Step 211, decoding the obtained identification code to obtain the information contained in the identification code.
In summary, the present invention provides a light supplement method for a scanning terminal, in which after a scanning head is powered on, brightness of a current environment is obtained through a light sensor, and light supplement brightness is determined according to the brightness of the current environment, so that when scanning is performed through the scanning head, the scanning head can be supplemented with light according to the light supplement brightness through a light supplement lamp, a problem of scanning failure caused by insufficient light during scanning can be solved, and a success rate of scanning is improved.
Fig. 3 is a block diagram of a light supplement device of a scanning terminal according to a further embodiment of the present invention, where the scanning terminal is provided with a scanning head, a light sensor and a light supplement lamp, and referring to fig. 3, the device 300 may include:
the photosensitive module 310 is configured to obtain the brightness of the current environment through the light sensor after the scanner head is powered on;
the supplementary lighting module 320 is configured to determine supplementary lighting brightness according to the brightness of the current environment;
and the scanning module 330 is configured to scan through the scanning head, and supplement light to the scanning head according to the light supplement brightness through a light supplement lamp during scanning.
Optionally, fig. 4 is a block diagram of another light supplement device for a scanning terminal according to an embodiment of the present invention, referring to fig. 4, where the device 300 further includes: a determination module 340 and an adjustment module 350;
the determining module 340 is configured to determine whether the scanning is successful;
the adjusting module 350 is configured to adjust the fill-in luminance when the scanning fails, so as to obtain an adjusted fill-in luminance;
the scanning module 360 is further configured to scan again through the scanning head, and supplement light to the scanning head through the light supplement lamp according to the adjusted light supplement brightness during scanning.
Optionally, fig. 5 is a block diagram of a light supplement module shown in the embodiment shown in fig. 3, referring to fig. 5, where the light supplement module 320 includes:
a brightness judgment sub-module 321, configured to judge whether the current ambient brightness is lower than a preset brightness threshold;
the brightness determination submodule 322 is configured to determine, when the current ambient brightness is lower than a preset brightness threshold, fill-in luminance corresponding to the current ambient brightness by using a preset corresponding relationship between ambient brightness and fill-in luminance.
Optionally, referring to fig. 5, the light supplement module 320 includes:
a brightness judgment sub-module 321, configured to judge whether the current ambient brightness is lower than a preset brightness threshold;
and a brightness determination submodule 322, configured to, when the current ambient brightness is lower than a preset brightness threshold, increase brightness of the current ambient brightness by one unit brightness to serve as the fill-in brightness.
Optionally, the adjusting module 350 is configured to:
and the brightness of the fill-in light after being increased by one unit brightness is used as the adjusted fill-in light brightness.
Optionally, the preset corresponding relationship between the ambient brightness and the fill-in light brightness includes:
a corresponding table of ambient brightness and fill light brightness; or,
the ambient brightness and fill light brightness.
In summary, the present invention provides a light supplement device for a scanning terminal, in which after a scanning head is powered on, a light sensor is used to obtain brightness of a current environment, and light supplement brightness is determined according to the brightness of the current environment, so that a light supplement lamp can be used to supplement light to the scanning head according to the light supplement brightness when the scanning head is used for scanning, thereby solving a problem of scanning failure caused by insufficient light during scanning, and improving a success rate of scanning.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (12)
1. A light supplementing method for a scanning terminal, wherein the scanning terminal is provided with a scanning head, and the method comprises the following steps:
after the scanning head is powered on, the brightness of the current environment is obtained through the light sensor;
determining the luminance of the supplementary lighting according to the luminance of the current environment;
and scanning through the scanning head, and supplementing light to the scanning head through a light supplementing lamp according to the light supplementing brightness during scanning.
2. The method of claim 1, further comprising:
judging whether the scanning is successful;
when the scanning fails, adjusting the fill-in light brightness to obtain adjusted fill-in light brightness;
and scanning again through the scanning head, and supplementing light to the scanning head through the light supplementing lamp according to the adjusted light supplementing brightness during scanning.
3. The method according to claim 1 or 2, wherein the determining the fill-in luminance according to the luminance of the current environment comprises:
judging whether the current ambient brightness is lower than a preset brightness threshold value;
and when the current ambient brightness is lower than a preset brightness threshold, determining the fill-in light brightness corresponding to the current ambient brightness by using the preset corresponding relation between the ambient brightness and the fill-in light brightness.
4. The method according to claim 1 or 2, wherein the determining the fill-in luminance according to the luminance of the current environment comprises:
judging whether the current ambient brightness is lower than a preset brightness threshold value;
and when the current ambient brightness is lower than a preset brightness threshold, increasing the brightness of the current ambient brightness by one unit brightness to be used as the fill-in brightness.
5. The method of claim 2, wherein the adjusting the fill-in luminance when the scanning fails to obtain the adjusted fill-in luminance comprises:
and the brightness of the fill-in light after being increased by one unit brightness is used as the adjusted fill-in light brightness.
6. The method according to claim 3, wherein the predetermined correspondence between the ambient brightness and the fill-in brightness comprises:
a corresponding table of ambient brightness and fill light brightness; or,
the ambient brightness and fill light brightness.
7. The utility model provides a light filling device of scanning terminal, scanning terminal is provided with the scanning head, its characterized in that, the device includes:
the photosensitive module is used for acquiring the brightness of the current environment through the light sensor after the scanning head is powered on;
the supplementary lighting module is used for determining supplementary lighting brightness according to the brightness of the current environment;
and the scanning module is used for scanning through the scanning head and supplementing light to the scanning head through a light supplementing lamp according to the light supplementing brightness during scanning.
8. The apparatus of claim 7, further comprising: the device comprises a judging module and an adjusting module;
the judging module is used for judging whether the scanning is successful;
the adjusting module is configured to adjust the fill-in luminance when the scanning fails to obtain an adjusted fill-in luminance;
and the scanning module is also used for scanning again through the scanning head and supplementing light to the scanning head through the light supplementing lamp according to the adjusted light supplementing brightness during scanning.
9. The apparatus of claim 7 or 8, wherein the light supplement module comprises:
the brightness judgment submodule is used for judging whether the current environment brightness is lower than a preset brightness threshold value;
and the brightness determination submodule is used for determining the fill-in light brightness corresponding to the current ambient brightness by utilizing the preset corresponding relation between the ambient brightness and the fill-in light brightness when the current ambient brightness is lower than a preset brightness threshold value.
10. The apparatus of claim 7 or 8, wherein the light supplement module comprises:
the brightness judgment submodule is used for judging whether the current environment brightness is lower than a preset brightness threshold value;
and the brightness determination sub-module is used for increasing the current ambient brightness by one unit brightness to be used as the fill-in light brightness when the current ambient brightness is lower than a preset brightness threshold.
11. The apparatus of claim 8, wherein the adjustment module is configured to:
and the brightness of the fill-in light after being increased by one unit brightness is used as the adjusted fill-in light brightness.
12. The apparatus of claim 9, wherein the predetermined correspondence between the ambient brightness and the fill-in brightness comprises:
a corresponding table of ambient brightness and fill light brightness; or,
the ambient brightness and fill light brightness.
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| CN201510938959.4A CN105574457A (en) | 2015-12-15 | 2015-12-15 | Light supplementing method and device for scanning terminal |
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| CN201510938959.4A CN105574457A (en) | 2015-12-15 | 2015-12-15 | Light supplementing method and device for scanning terminal |
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