CN108154060B - Scanning head aiming light exposure solving system - Google Patents
Scanning head aiming light exposure solving system Download PDFInfo
- Publication number
- CN108154060B CN108154060B CN201810016666.4A CN201810016666A CN108154060B CN 108154060 B CN108154060 B CN 108154060B CN 201810016666 A CN201810016666 A CN 201810016666A CN 108154060 B CN108154060 B CN 108154060B
- Authority
- CN
- China
- Prior art keywords
- pin
- control circuit
- aiming
- scanning head
- synchronizing signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Abstract
The invention discloses a scanning head aiming light exposure solving system, which comprises a control circuit of an aiming lamp, wherein the control circuit of the aiming lamp is composed of 5 pin ends, wherein a pin 1 and a pin 2 are input ends of an AND circuit, a pin 4 is an output end of a NOT circuit, a pin 5 end of the control circuit is connected with a high level Vcc, and a pin 3 end of the control circuit is grounded; and a pin 1 and a pin 2 of the control circuit are respectively connected with a scanning signal and a field synchronizing signal, and are connected with a resistor R1 on the field synchronizing signal and are grounded. Compared with the existing scanning head in the market, the system for solving the exposure of the aiming light of the scanning head can completely eliminate the problem of local overexposure of the aiming light, greatly improves the decoding precision, stability, recognition rate, decoding speed and power consumption of the scanning head, and is easy to realize and low in cost.
Description
Technical Field
The invention relates to the technical field of two-dimensional code scanning heads, in particular to a scanning head aiming light exposure solving system.
Background
With the rapid development of the mobile internet and the logistics industry, the one-dimensional code and the two-dimensional code are ubiquitous in work and life, so that higher requirements are provided for the scanning head technology, and strict requirements are provided for the decoding precision, stability, low power consumption, identification rate, identification speed and the like.
All take camera cooperation light filling lamp and sight lamp among the current two-dimensional code scanning head scheme, the camera is used for getting the sign indicating number, and the light filling lamp is then used for providing the light filling, and the sight lamp is used for guiding the operator to sweep the sign indicating number. The general use case is that, turn on light filling lamp and sighting lamp while the camera is got sign indicating number. The scanning head has the disadvantages that aiming light needs to be aligned to a scanned one-dimensional code or two-dimensional code, an aiming lamp is used as a positioning guide, a light source with a small area is certain, and the aiming light covers the identified one-dimensional code or two-dimensional code in most cases, so that code fetching of the camera can form local overexposure, the decoding of the camera is on the premise that a code fetching picture is clear, and the local overexposure has great influence on the decoding precision, stability, identification rate, decoding speed and even power consumption of the scanning head.
Disclosure of Invention
The present invention is directed to a system for solving the above-mentioned problems of the prior art by using a scanning head aiming light exposure.
In order to achieve the purpose, the invention provides the following technical scheme:
a scanning head aiming light exposure solving system comprises a control circuit of an aiming lamp, wherein the control circuit of the aiming lamp is composed of 5 pin ends, wherein a pin 1 and a pin 2 are input ends of an AND circuit, a pin 4 is an output end of a NOT circuit, a pin 5 end of the control circuit is connected with a high level Vcc, and a pin 3 end of the control circuit is grounded; a pin 1 and a pin 2 of the control circuit are respectively connected with a scanning signal and a field synchronizing signal, and are connected with a resistor R1 on the field synchronizing signal and are grounded; the control circuit is terminated to the grid electrode of the field effect transistor at a pin 4; the drain electrode of the field effect transistor is connected with a high level Vcc; the source of the field effect transistor is connected to the resistor R2 and the light emitting diode and is grounded.
As a further scheme of the invention: the field effect transistor is an N-type MOS transistor.
As a further scheme of the invention: the control circuit is a U1 controller.
Compared with the prior art, the invention has the beneficial effects that:
1. the scanning head aiming light exposure solving system utilizes the driving of the camera to make the camera output a field synchronizing signal (vsync) outwards. The field synchronizing signal is input into the control circuit, the control circuit separates the starting point and the ending point of the blanking time of the field synchronizing signal, the starting point is used as a starting signal of the aiming lamp, and the ending point is used as a closing signal of the aiming lamp. The code fetching time of the camera is completed in the effective picture interval of the field synchronizing signal, so that the code fetching time of the camera and the lighting time of the aiming lamp can be completely separated, and the local overexposure caused by aiming light is completely avoided.
2. Compared with the existing scanning head in the market, the system for solving the exposure of the aiming light of the scanning head can completely eliminate the problem of local overexposure of the aiming light, greatly improves the decoding precision, stability, recognition rate, decoding speed and power consumption of the scanning head, and is easy to realize and low in cost.
Drawings
FIG. 1 is a timing diagram of a field sync signal according to the present invention;
fig. 2 is a control circuit diagram of the aiming lamp of the present invention.
In the figure: 1-a control circuit; q1-field effect transistor; d1-light emitting diode; d2-diode.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, in an embodiment of the present invention, a system for solving the problem of aiming light exposure of a scanning head includes a control circuit 1 of an aiming lamp, where the control circuit 1 of the aiming lamp is composed of 5 pin terminals, the control circuit 1 is a U1 controller, where pin 1 and pin 2 are input terminals of an and circuit, pin 4 is an output terminal of a not circuit, a high-level Vcc is connected to a pin 5 terminal of the control circuit 1, and a pin 3 terminal of the control circuit 1 is grounded; a pin 1 and a pin 2 of the control circuit 1 are respectively connected with a scanning signal and a field synchronizing signal, a resistor R1 is connected to the field synchronizing signal and grounded, the scanning signal (SCAN _ ENABLE) and the field synchronizing signal (vsync) are used as input ends of an AND gate circuit, and the output ends of the SCAN _ ENABLE and the field synchronizing signal are used as control signals of an aiming lamp; the pin 4 of the control circuit 1 is connected to the grid of a field effect transistor Q1, and the field effect transistor Q1 is an N-type MOS transistor; the drain electrode of the field effect transistor Q1 is connected with a high-level Vcc; the source of the field effect transistor Q1 is connected to the resistor R2 and the led D1 and is grounded.
In summary, the following steps: the problem of local overexposure caused by aiming light can be perfectly solved. The invention utilizes the driving of the camera to make the camera output a field synchronous signal (vsync) to the outside. The field sync signal is input to the control circuit 1, and the control circuit 1 separates a start point and an end point of a blanking time of the field sync signal, the start point being a turn-on signal of the aiming lamp and the end point being a turn-off signal of the aiming lamp. The code fetching time of the camera is completed in the effective picture interval of the field synchronizing signal, so that the code fetching time of the camera and the lighting time of the aiming lamp can be completely separated, and the local overexposure caused by aiming light is completely avoided.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (1)
1. A scanning head aiming light exposure solving system comprises a control circuit (1) of an aiming lamp, and is characterized in that: the control circuit (1) of the aiming lamp is composed of 5 pin ends, wherein the pin 1 and the pin 2 are input ends of an AND circuit, the pin 4 is an output end of a NOT circuit, a high level Vcc is connected to the pin 5 end of the control circuit (1), and the pin 3 end of the control circuit (1) is grounded; a pin 1 and a pin 2 of the control circuit (1) are respectively connected with a scanning signal and a field synchronizing signal, and are connected with a resistor R1 on the field synchronizing signal and are grounded; is terminated to the gate of a field effect transistor (Q1) at pin 4 of the control circuit (1); the drain electrode of the field effect transistor (Q1) is connected with a high-level Vcc; the source electrode of the field effect transistor (Q1) is connected to the resistor R2 and the light emitting diode D1 and is grounded; the field effect transistor (Q1) is an N-type MOS transistor; the control circuit (1) is a U1 controller;
The camera is used for driving the camera to output a field synchronizing signal to the outside; the field synchronizing signal is input into the control circuit (1), the control circuit (1) separates the starting point and the ending point of the blanking time of the field synchronizing signal, the starting point is used as a starting signal of the aiming lamp, and the ending point is used as a closing signal of the aiming lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810016666.4A CN108154060B (en) | 2018-01-08 | 2018-01-08 | Scanning head aiming light exposure solving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810016666.4A CN108154060B (en) | 2018-01-08 | 2018-01-08 | Scanning head aiming light exposure solving system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108154060A CN108154060A (en) | 2018-06-12 |
| CN108154060B true CN108154060B (en) | 2021-10-08 |
Family
ID=62460808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810016666.4A Active CN108154060B (en) | 2018-01-08 | 2018-01-08 | Scanning head aiming light exposure solving system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108154060B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109460686B (en) * | 2018-09-25 | 2022-06-14 | 深圳盈达信息科技有限公司 | Method and system for blanking aiming light of aiming device |
| CN109815766B (en) * | 2019-01-25 | 2022-05-03 | 深圳市优博讯科技股份有限公司 | Bar code scanning method and device, mobile terminal and readable storage medium |
| CN117528270A (en) * | 2020-07-16 | 2024-02-06 | 无锡盈达聚力科技有限公司 | Scanning system and method for controlling aiming light source |
| CN115577726A (en) * | 2022-11-11 | 2023-01-06 | 无锡盈达聚力科技有限公司 | Image forming apparatus and image forming method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1984259A (en) * | 2005-12-15 | 2007-06-20 | 四川大学 | Automatic real-time frame by frame continuous adjuster of shutter for camera |
| CN101102412A (en) * | 2007-07-25 | 2008-01-09 | 广东威创日新电子有限公司 | Image shooting method of display device |
| CN202948454U (en) * | 2012-11-21 | 2013-05-22 | 厦门安捷物联网络科技有限公司 | Graphical barcode reading device |
| CN203015218U (en) * | 2012-12-24 | 2013-06-19 | 四川九洲电器集团有限责任公司 | Synchronous stroboscopic and light flashing control circuit |
| CN104822032A (en) * | 2015-04-20 | 2015-08-05 | 绍兴文理学院 | Linear CCD-based signal acquisition and automatic exposure circuit and method thereof |
| CN106791469A (en) * | 2016-12-28 | 2017-05-31 | 东软集团股份有限公司 | The processing method and processing device of view data |
-
2018
- 2018-01-08 CN CN201810016666.4A patent/CN108154060B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1984259A (en) * | 2005-12-15 | 2007-06-20 | 四川大学 | Automatic real-time frame by frame continuous adjuster of shutter for camera |
| CN101102412A (en) * | 2007-07-25 | 2008-01-09 | 广东威创日新电子有限公司 | Image shooting method of display device |
| CN202948454U (en) * | 2012-11-21 | 2013-05-22 | 厦门安捷物联网络科技有限公司 | Graphical barcode reading device |
| CN203015218U (en) * | 2012-12-24 | 2013-06-19 | 四川九洲电器集团有限责任公司 | Synchronous stroboscopic and light flashing control circuit |
| CN104822032A (en) * | 2015-04-20 | 2015-08-05 | 绍兴文理学院 | Linear CCD-based signal acquisition and automatic exposure circuit and method thereof |
| CN106791469A (en) * | 2016-12-28 | 2017-05-31 | 东软集团股份有限公司 | The processing method and processing device of view data |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108154060A (en) | 2018-06-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108154060B (en) | Scanning head aiming light exposure solving system | |
| US9735868B2 (en) | Derivation of an identifier encoded in a visible light communication signal | |
| EP3285198B1 (en) | Method for reading indicia off a display of a mobile device | |
| CN102254302A (en) | Picture trimming system and method thereof | |
| CN111103579A (en) | Visible light indoor positioning system and method based on mobile phone camera | |
| US20170068869A1 (en) | Scanning system, terminal device and scanning method | |
| US11665432B2 (en) | Illumination control for imaging systems with multiple image sensors | |
| CN108416238B (en) | Laser scanning module and method for shielding laser interference | |
| CN101227775B (en) | Pixel circuit | |
| CN109460686B (en) | Method and system for blanking aiming light of aiming device | |
| CN113406652A (en) | Laser radar and anti-interference method applied to laser radar | |
| US9747845B2 (en) | Backlight control circuit, electronic device and display panel driving method | |
| CN109784119B (en) | Optical code generating device, decoding device, encoding method, decoding method, and system | |
| CN204833292U (en) | Two -dimensional code scanner with guide lamp | |
| WO2018082020A1 (en) | System for resolving exposure of aiming beams of scanning head | |
| WO2017059577A1 (en) | Eyeball tracking device and auxiliary light source control method and related device thereof | |
| CN105005754A (en) | Two-dimensional code scanner sharing light supplementation lamp and alignment lamp | |
| US20150097034A1 (en) | Optical information reader and illumination control method | |
| CN207586958U (en) | Wand | |
| TW200511189A (en) | Display pixel circuit and driving method thereof | |
| WO2021174390A1 (en) | Depth acquisition assembly and electronic device | |
| CN105516538B (en) | A kind of scanning process shows the method and system of scans content | |
| CN107918744A (en) | For being attached to the optical accessories of mobile equipment | |
| CN102346997B (en) | Pixel structure, display panel, display and drive method thereof | |
| CN203455567U (en) | Laser head auxiliary focusing device used for camera |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |