CN106022198B - Laser bar code scanning means and laser bar code scan method - Google Patents
Laser bar code scanning means and laser bar code scan method Download PDFInfo
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- CN106022198B CN106022198B CN201610542850.3A CN201610542850A CN106022198B CN 106022198 B CN106022198 B CN 106022198B CN 201610542850 A CN201610542850 A CN 201610542850A CN 106022198 B CN106022198 B CN 106022198B
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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
- G06K7/10831—Arrangement of optical elements, e.g. lenses, mirrors, prisms
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Abstract
The present invention discloses a kind of laser bar code scanning means, including：Laser bar code scan pattern switch unit, motor speed sensor, induction mark, laser, control unit, motor and light path reflector element；Wherein, laser bar code scan pattern switch unit, for switching all fronts or single line laser bar code scan pattern；Motor speed sensor, the position of the wherein face speculum for detecting motor rotary speed and detection rotation microscope group；Induction mark, for providing position signal of the rotation microscope group wherein face speculum in rotation, and the velocity measuring reference signal for providing rotation microscope group rotation for motor speed sensor；Control unit, for controlling Laser emission, motor driving；Light path reflector element, for reflecting to form all fronts laser bar code scanning ray or single line laser bar code scan light.Invention additionally discloses a kind of laser bar code scan methods.Technical scheme of the present invention is intended to that a laser bar code scanning means is made to have two kinds of laser bar code scan patterns.
Description
Technical Field
The invention relates to the technical field of laser bar code scanning, in particular to a laser bar code scanning device and a laser bar code scanning method.
Background
Bar codes are widely used in the process of product logistics control, and therefore, the application of laser bar code scanning devices is increasingly widespread.
According to the different scanning modes of laser bar codes, the laser bar code scanning device can be divided into two types, namely a single-line laser bar code scanning device and a full-line laser bar code scanning device. In the prior art, a laser barcode scanning device usually has only one laser barcode scanning mode.
The technology has the following disadvantages: the laser bar code scanning mode is single.
Disclosure of Invention
The invention mainly aims to provide a laser bar code scanning device and a laser bar code scanning method, aiming at solving the defect of single laser bar code scanning mode in the prior art.
In order to achieve the purpose, the laser barcode scanning device provided by the invention comprises: the device comprises a laser bar code scanning mode switching unit, a motor rotating speed sensor, an induction mark, a laser, a control unit, a motor and a light path reflection unit; wherein,
the laser bar code scanning mode switching unit is used for switching the single-line laser bar code scanning mode to the full-line laser bar code scanning mode and sending a full-line laser bar code scanning instruction, or switching the full-line laser bar code scanning mode to the single-line laser bar code scanning mode and sending a single-line laser bar code scanning instruction;
the motor rotating speed sensor is used for detecting the rotating speed of the motor driving the rotating mirror group and detecting the position of one reflecting mirror of the rotating mirror group;
the sensing mark is arranged on one of the reflectors of the rotating mirror group, and is used for providing a position signal of the one of the reflectors of the rotating mirror group during rotation and providing a speed detection reference signal of the rotation of the rotating mirror group for the motor speed sensor;
the laser is used for emitting laser;
the control unit is used for controlling the motor to drive the rotating mirror group to rotate and controlling the rotating speed of the motor, and when the rotating speed sensor acquires that the rotating speed of the motor is too high or too low, the rotating speed of the motor is adjusted to a preset rotating speed; the laser control system is used for controlling the laser to emit laser and turn off the laser, controlling the laser to continuously emit the laser according to the full-line laser bar code scanning instruction, controlling the laser to emit the laser when the motor rotating speed sensor acquires a signal of the induction mark according to the single-line laser bar code scanning instruction, and turning off the laser when the signal of the induction mark is not acquired;
the light path reflecting unit comprises the rotating lens group and the fixed lens group; the rotating mirror group is driven by the motor to rotate and used for reflecting continuously emitted laser into multi-line laser to the fixed mirror group to form full-line laser bar code scanning light; the rotating mirror group is used for reflecting laser emitted only when the motor rotating speed sensor collects the signal of the induction mark to a reflecting surface in the middle of the fixed mirror group to form single-line laser bar code scanning light.
Preferably, the inductive marker is a magnet.
Preferably, the control unit comprises a main processor circuit, a laser control circuit and a motor control circuit; the laser bar code scanning mode switching unit, the laser control circuit, the motor control circuit and the motor rotating speed sensor are respectively connected with the main processor circuit, and the laser control circuit is connected with the laser.
Preferably, the control unit further comprises an optical-electrical switching circuit for converting the optical information reflected back from the barcode into an electrical signal.
Preferably, the rotating mirror group comprises a plurality of first reflectors annularly arranged on a rotating shaft of the rotating mirror group, and the reflecting surfaces of the first reflectors are respectively arranged to deviate from the rotating shaft; the rotating mirror group is arranged on the rotating shaft.
Preferably, the fixed mirror group comprises a plurality of second mirrors which are sequentially connected and arranged in an arc shape, and the reflecting surface of each second mirror is arranged on the side of the arc-shaped concave surface and faces the reflecting surface of the rotating mirror group.
Preferably, the fixed mirror group comprises five or six reflecting surfaces.
Preferably, the optical path reflecting unit further includes a plane mirror, and the plane mirror is configured to reflect the laser light emitted by the laser device to the rotating mirror group.
Preferably, the optical path reflection unit further includes a curved mirror, the plane mirror is disposed on a concave side of the curved mirror, and the curved mirror is configured to collect the laser light reflected from the barcode.
The invention also provides a laser bar code scanning method, which comprises the following steps:
switching the single-line laser bar code scanning mode to the full-line laser bar code scanning mode, and sending a full-line laser bar code scanning instruction, or switching the full-line laser bar code scanning mode to the single-line laser bar code scanning mode, and sending a single-line laser bar code scanning instruction;
the motor rotating speed sensor detects the rotating speed of the motor driving the rotating mirror group to rotate, and when the rotating speed of the motor is too high or too low, the rotating speed of the motor is adjusted to a preset rotating speed;
controlling a laser to continuously emit laser according to the full-line laser bar code scanning instruction; controlling the laser to emit laser only when a signal of a sensing mark on the rotating mirror group is acquired according to the single-line laser bar code scanning instruction, and closing the laser when the signal of the sensing mark is not acquired;
the rotating mirror group reflects the continuously emitted laser into multi-line laser to the fixed mirror group to form full-line laser bar code scanning light; and reflecting laser emitted only when the motor rotating speed sensor acquires the signal of the induction mark to a reflecting surface in the middle of the fixed mirror group to form single-line laser bar code scanning light.
In the technical scheme of the invention, the laser continuously emits laser to the reflecting mirror of the rotating mirror group, or only when the motor rotating speed sensor acquires the signal of the induction mark, the laser emits laser to one reflecting mirror of the rotating mirror group, the rotating mirror group reflects the continuously emitted laser into multi-line laser to the fixed mirror group to form full-line laser bar code scanning light, or reflects the laser emitted only when the motor rotating speed sensor acquires the signal of the induction mark to the reflecting surface in the middle of the fixed mirror group to form single-line laser bar code scanning light.
Drawings
In order to more clearly illustrate the technical solutions in the present embodiment or the prior art, the drawings needed to be used in the description of the embodiment or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic perspective view of a laser barcode scanning device according to the present invention;
FIG. 2 is a functional block diagram of the laser barcode scanning device according to the present invention;
FIG. 3 is a schematic view of a laser barcode scanning process of the laser barcode scanning apparatus shown in FIG. 1 in a full-line laser barcode scanning mode;
FIG. 4 is a schematic view of a full-line laser barcode scanning light line formed by the laser barcode scanning device of the present invention;
FIG. 5 is a schematic view of a laser barcode scanning process of the laser barcode scanning apparatus shown in FIG. 1 in a single-line laser barcode scanning mode;
FIG. 6 is a schematic view of another laser barcode scanning process of the laser barcode scanning apparatus shown in FIG. 5 in a single-line laser barcode scanning mode;
FIG. 7 is a schematic view of a single line laser bar code scanning beam formed by the laser bar code scanning device of the present invention;
fig. 8 is a schematic flow chart of a laser barcode scanning method of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Laser bar code scanning device | 110 | Laser device |
| 130 | Light path reflection unit | 131 | Rotary lens group |
| 132 | First reflector | 133 | Fixed lens group |
| 134 | Second reflecting mirror | 135 | Plane mirror |
| 136 | Curved mirror | 150 | Base seat |
| 151 | Induction mark | ||
| 1 | Laser bar code scanning mode switching unit | 2 | Main processor circuit |
| 3 | Motor speed sensor | 4 | Laser control circuit |
| 5 | Motor control circuit | 6 | Photoelectric switching circuit |
| 7 | Control unit |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments will be described clearly and completely with reference to the drawings in the embodiments, 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.
It should be noted that all the directional indications (such as up, down, left, right, front, and rear … …) in the present embodiment are only used to explain the relative positional relationship between the components, the movement, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a laser barcode scanning device 100 and a laser barcode scanning method.
Referring to fig. 1 to 7, the laser barcode scanning apparatus 100 provided by the present invention includes: the system comprises a laser bar code scanning mode switching unit 1, a motor rotating speed sensor 3, an induction mark 151, a laser 110, a control unit 7, a motor (not shown) and a light path reflection unit 130; wherein,
the laser bar code scanning mode switching unit 1 is used for switching a single-line laser bar code scanning mode to a full-line laser bar code scanning mode and sending a full-line laser bar code scanning instruction, or switching the full-line laser bar code scanning mode to a single-line laser bar code scanning mode and sending a single-line laser bar code scanning instruction;
the motor speed sensor 3 is configured to detect a speed at which the motor drives the rotating mirror group 131 to rotate, and is configured to detect a position of a reflecting mirror on one side of the rotating mirror group 131;
the sensing mark 151 is disposed on one of the mirrors of the rotating mirror group 131, and the sensing mark 151 is configured to provide a position signal of the one of the mirrors of the rotating mirror group 131 during rotation and provide a speed detection reference signal of the rotation of the rotating mirror group 131 for the motor speed sensor 3;
the laser 110 is used for emitting laser;
the control unit 7 is configured to control the motor to drive the rotating mirror group 131 to rotate and control the rotating speed of the motor, and when the rotating speed sensor 3 acquires that the rotating speed of the motor is too high or too low, adjust the rotating speed of the motor to a preset rotating speed; the laser controller is used for controlling the laser 110 to emit laser and turn off the laser, controlling the laser 110 to continuously emit laser according to the full-line laser bar code scanning instruction, controlling the laser 110 to emit laser when the motor rotating speed sensor 3 acquires a signal of the induction mark 151 according to the single-line laser bar code scanning instruction, and turning off the laser 110 when the signal of the induction mark 151 is not acquired;
the optical path reflecting unit 130 comprises the rotating mirror group 131 and the fixed mirror group 133; the rotating mirror group 131 is driven by the motor to rotate, and the rotating mirror group 131 is used for reflecting continuously emitted laser into multi-line laser to the fixed mirror group 133 to form full-line laser barcode scanning light; the rotating mirror group 131 is configured to reflect laser light emitted only when the motor speed sensor 3 collects a signal of the sensing identifier 151 to a reflective surface in the middle of the fixed mirror group 133 to form a single-line laser barcode scanning light.
In this embodiment, the rotating mirror set 131 includes a four-sided first mirror 132, and the fixed mirror set 133 includes a five-sided (or six-sided) second mirror 134.
The laser bar code scanning mode switching unit 1 is a switching circuit.
The inductive label 151 is a magnet.
Referring to fig. 2, the working method of the laser barcode scanning device 100 is as follows:
1. the full-line laser bar code scanning method comprises the following steps: receiving the full-line laser barcode scanning instruction, the control unit 7 controls the motor to drive the rotating mirror group 131 to rotate, the motor rotation speed sensor 3 detects the rotation speed of the motor through the induction mark 151, the induction mark 151 is used for providing a speed detection reference signal for the rotation of the rotating mirror group 131, and sends the rotation speed signal of the motor to the main processor circuit 2, and when the rotation speed of the motor, which is acquired by the motor rotation speed sensor 3, is too high or too low, the main processor circuit 2 adjusts the rotation speed of the motor to a preset range through the motor control circuit 5; the main processor circuit 2 controls the laser control circuit 4 to drive the laser 110 to continuously emit laser, and the laser 110 emits laser to a plane mirror 135 located at the center of a curved mirror 136, the plane mirror 135 reflects laser to the rotating mirror set 131 with four first reflecting mirrors 132 to form four laser lines, the rotating mirror set 131 reflects laser to the fixed mirror set 133 with five (or six) second reflecting mirrors 134 to form the full-line laser barcode scanning light with 20 (or 24) laser lines, the full-line laser barcode scanning light emits to a barcode, the curved mirror 136 is used to collect laser reflected from the barcode to the photoelectric switching circuit 6, and the photoelectric switching circuit 6 is used to convert optical information reflected from the barcode into an electrical signal.
2. The single-line laser bar code scanning method comprises the following steps: receiving the single-line laser bar code scanning instruction, the control unit 7 controls the motor to drive the rotating mirror group 131 to rotate, the motor rotating speed sensor 3 detects the rotating speed of the motor through the induction mark 151, the induction mark 151 is used for providing a speed detection reference signal for the rotating mirror group 131 to rotate, and sends the rotating speed signal of the motor to the main processor circuit 2, and when the rotating speed of the motor, which is acquired by the motor rotating speed sensor 3, is too high or too low, the main processor circuit 2 adjusts the rotating speed of the motor to a preset range through the motor control circuit 5; when the motor speed sensor 3 collects the signal of the sensing mark 151, the laser 110 is controlled to emit laser to irradiate the plane mirror 135 located at the center of the curved mirror 136, the rotating mirror group 131 continuously rotates, the sensing mark 151 is arranged on one of the reflectors of the rotating mirror group 131, when the motor speed sensor 3 does not collect the signal of the sensing mark 151, the laser control circuit 4 controls the laser 110 to be turned off, and simultaneously, the other three reflectors of the rotating mirror group 131 cannot reflect laser, when the rotating mirror group 131 only collects the signal of the sensing mark 151 from the motor speed sensor 3, the emitted laser is reflected to the reflector in the middle of the fixed mirror group, namely, to the reflector in the middle of the five reflectors or the six reflectors of the fixed mirror group 133, the single-line laser bar code scanning light is formed and is emitted to the bar code, the curved mirror 136 is used for converging the laser reflected back from the bar code to the photoelectric switching circuit 6, and the photoelectric switching circuit 6 is used for converting the optical information reflected back from the bar code into an electric signal.
In the technical solution of the present invention, the laser 110 continuously emits laser to the reflecting mirror of the rotating mirror group 131, or only when the motor speed sensor 3 collects the signal of the sensing mark 151, the laser 110 emits laser to one of the reflectors of the rotating mirror group 131, the rotating mirror set 131 reflects the continuously emitted laser light into multi-line laser light to the fixed mirror set 133 to form a full-line laser barcode scanning light, or the laser emitted only when the motor speed sensor 3 collects the signal of the sensing mark 151 is reflected to the reflecting surface in the middle of the fixed mirror group 133 to form a single-line laser barcode scanning light, the technical scheme of the invention combines the emission mode of the laser with the rotation of the rotating mirror group 131, so that one laser barcode scanning device 100 has two laser barcode scanning modes.
Preferably, the control unit 7 comprises a main processor circuit 2, a laser control circuit 4 and a motor control circuit 5; the laser bar code scanning mode switching unit 1, the laser control circuit 4, the motor control circuit 5 and the motor rotating speed sensor 3 are respectively connected with the main processor circuit 2, and the laser control circuit 4 is connected with the laser 110.
The motor speed sensor 3 is used for detecting the rotating speed of the motor and the rotating position of the rotating mirror group 131.
The motor control circuit 5 is used for controlling the motor to rotate at a high speed in a preset rotating speed, the motor rotating speed sensor 3 is used for detecting the rotating speed of the motor and then sending a rotating speed signal to the main processor circuit 2, when the rotating speed of the motor is too large, the main processor circuit 2 adjusts the rotating speed of the motor to be low through the motor control circuit 5, and when the rotating speed of the motor is too small, the main processor circuit 2 adjusts the rotating speed of the motor to be high through the motor control circuit 5, so that the rotating speed of the motor is kept stable.
The motor speed sensor 3 uses the sensing mark 151 on the one reflecting surface of the rotating mirror group 131 as a speed detection reference signal for the rotation of the rotating mirror group 131.
The motor speed sensor 3 is a hall element and is configured to detect a signal of the sensing mark 151 on the rotating mirror group 131.
The induction mark 151 is a magnet and is used for marking the rotating position of the rotating mirror group 131, when the induction mark 151 rotates to be detected by the motor speed sensor 3, laser is emitted, and when the motor speed sensor 3 cannot detect the induction mark 151, the laser is turned off.
Preferably, the control unit 7 further comprises an optical-electrical switching circuit 6, and the optical-electrical switching circuit 6 is used for converting the optical information reflected from the barcode into an electrical signal.
Preferably, the rotating mirror group 131 includes a plurality of first reflecting mirrors 132 annularly disposed on the rotating shaft thereof, and the reflecting surfaces of the first reflecting mirrors 132 on each surface are respectively disposed away from the rotating shaft; the rotating mirror group 131 is disposed on the rotating shaft.
The reflecting surfaces of the rotating mirror group 131 sequentially rotate to positions for receiving laser light and reflect the received laser light to the reflecting surfaces of the fixed mirror group 133. The rotating mirror group 131 is in continuous self-rotation so that each of the first reflecting mirrors 132 receives the laser.
The included angle between each first reflecting mirror 132 and the base 150 is different, so that the first reflecting mirror 132 can form a plurality of laser barcode scanning light beams spaced from each other on each reflecting surface of the fixed mirror group 133.
Preferably, the fixed mirror group 133 includes a plurality of second mirrors 134 connected in sequence and arranged in an arc shape, and the reflective surface of each second mirror 134 is disposed on the concave side of the arc shape and faces the reflective surface of the rotating mirror group 131.
Preferably, the fixed mirror group 133 includes five or six reflective surfaces.
The present invention is not limited to the number of the first reflector 132 and the second reflector 134, and any number is also included in the protection scope of the present invention.
Generally, the single-line laser bar code scanning light needs to be perpendicular or nearly perpendicular to the bar code to successfully scan the bar code information. According to the technical scheme, the laser bar code scanning angle of the single-line laser bar code scanning light can be kept fixed, and the single-line laser bar code scanning light projected by the second reflecting mirror 134 positioned in the middle of the fixing mirror group 133 can enable the emitted single-line laser bar code scanning light to accord with the laser bar code scanning habit of people, so that the probability of successfully reading the bar code information is improved.
Preferably, the optical path reflection unit 130 further includes a plane mirror 135, and the plane mirror is configured to reflect the laser light emitted by the laser 110 to the rotating mirror group 131.
The plane mirror 135 can be used to adjust the incident angle of the laser light to the rotating mirror group 131.
Preferably, the optical path reflection unit 130 further includes a curved mirror, and the plane mirror 135 is disposed on a concave side of the curved mirror, and is configured to collect the laser light reflected from the barcode.
Preferably, the laser barcode scanning mode switching unit 1 can be controlled by a key (not shown).
The key is convenient for switching the laser barcode scanning mode of the laser barcode scanning device 100, in this embodiment, the number of the key may be one, and when the key is pressed, a switching signal is sent out, so as to realize easy switching of the laser barcode scanning mode.
Of course, the number of the keys may be two, one of which is a single-line laser barcode scanning key, and the other of which is a full-line laser barcode scanning key, and the same is included in the protection scope of the present invention.
The laser barcode scanning device 100 further comprises a base 150, and the rotating mirror group 131 and the fixed mirror group 133 are connected to the base 150.
Referring to fig. 8, the present invention further provides a laser barcode scanning method, including the following steps:
and step S20, switching the single-line laser bar code scanning mode to the full-line laser bar code scanning mode and sending a full-line laser bar code scanning instruction, or switching the full-line laser bar code scanning mode to the single-line laser bar code scanning mode and sending a single-line laser bar code scanning instruction.
Specifically, when the laser barcode scanning mode needs to be changed, the operator sends the switching signal through the laser barcode scanning mode switching unit 1, in this embodiment, the laser barcode scanning mode switching unit 1 can be operated by setting a key, the operator presses the key to send the switching signal, presses the key once to switch the laser barcode scanning mode, and when the laser barcode scanning mode needs to be switched back, the operator presses the key again to realize switching.
Certainly, the number of the keys can be two, and the keys are the single-line laser bar code scanning key or the full-line laser bar code scanning key respectively, and when the keys are in the full-line laser bar code scanning mode, the laser bar code scanning mode can be switched to the single-line laser bar code scanning mode by pressing the single-line laser bar code scanning key once; similarly, when the laser bar code scanning mode is in the single-line laser bar code scanning mode, the laser bar code scanning mode can be switched to the full-line laser bar code scanning mode by pressing the full-line laser bar code scanning key once.
Step S30, detecting the rotating speed of the motor driving the rotating mirror group 131 to rotate by the motor rotating speed sensor 3, and adjusting the rotating speed of the motor to a preset rotating speed when the rotating speed of the motor is too high or too low;
step S40, controlling the laser 110 to continuously emit laser according to the full-line laser bar code scanning instruction; according to the single-line laser bar code scanning instruction, the laser 110 is controlled to emit laser only when a signal of the induction mark 151 on the rotating mirror group 131 is collected, and the laser 110 is turned off when the signal of the induction mark 151 is not collected;
step S60, the rotating mirror group 131 reflects the continuously emitted laser into multi-line laser to the fixed mirror group 133 to form a full-line laser barcode scanning light; and laser emitted only when the motor speed sensor 3 acquires the signal of the induction mark 151 is reflected to a reflecting surface in the middle of the fixed mirror group 133 to form a single-line laser bar code scanning light.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A laser barcode scanning device, comprising: the device comprises a laser bar code scanning mode switching unit, a motor rotating speed sensor, an induction mark, a laser, a control unit, a motor and a light path reflection unit; the laser bar code scanning mode switching unit is used for switching a single-line laser bar code scanning mode to a full-line laser bar code scanning mode and sending a full-line laser bar code scanning instruction, or switching the full-line laser bar code scanning mode to a single-line laser bar code scanning mode and sending a single-line laser bar code scanning instruction; the motor rotating speed sensor is used for detecting the rotating speed of the motor driving the rotating mirror group and detecting the position of one reflecting mirror of the rotating mirror group; the sensing mark is arranged on one of the reflectors of the rotating mirror group, and is used for providing a position signal of the one of the reflectors of the rotating mirror group during rotation and providing a speed detection reference signal of the rotation of the rotating mirror group for the motor speed sensor; the laser is used for emitting laser; the control unit is used for controlling the motor to drive the rotating mirror group to rotate and controlling the rotating speed of the motor, and when the rotating speed sensor acquires that the rotating speed of the motor is too high or too low, the rotating speed of the motor is adjusted to a preset rotating speed; the laser control system is used for controlling the laser to emit laser and turn off the laser, controlling the laser to continuously emit the laser according to the full-line laser bar code scanning instruction, controlling the laser to emit the laser when the motor rotating speed sensor acquires a signal of the induction mark according to the single-line laser bar code scanning instruction, and turning off the laser when the signal of the induction mark is not acquired; the light path reflecting unit comprises the rotating lens group and the fixed lens group; the rotating mirror group is driven by the motor to rotate and used for reflecting continuously emitted laser into multi-line laser to the fixed mirror group to form full-line laser bar code scanning light; the rotating mirror group is used for reflecting laser emitted only when the motor rotating speed sensor acquires the signal of the induction mark to a reflecting surface in the middle of the fixed mirror group to form single-line laser bar code scanning light; the rotating mirror group comprises a reflecting mirror.
2. The laser barcode scanning device of claim 1, wherein the inductive tag is a magnet.
3. The laser barcode scanning device of claim 1, wherein the control unit comprises a main processor circuit, a laser control circuit and a motor control circuit; the laser bar code scanning mode switching unit, the laser control circuit, the motor control circuit and the motor rotating speed sensor are respectively connected with the main processor circuit, and the laser control circuit is connected with the laser.
4. The laser barcode scanner of claim 3, wherein the control unit further comprises an electro-optical switching circuit for converting the optical information reflected from the barcode into an electrical signal.
5. The laser bar code scanning device according to any one of claims 1 to 4, wherein said rotating mirror group comprises a plurality of first reflecting mirrors surrounding the rotating shaft thereof, and the reflecting surfaces of said first reflecting mirrors are respectively arranged away from said rotating shaft; the rotating mirror group is arranged on the rotating shaft.
6. The laser bar code scanner according to claim 5, wherein said fixed mirror group comprises a plurality of second mirrors connected in sequence and arranged in an arc shape, and a reflective surface of each second mirror is disposed on a concave side of said arc shape and faces a reflective surface of said rotating mirror group.
7. The laser barcode scanning device of claim 6, wherein the fixed mirror group comprises five or six reflecting surfaces.
8. The laser barcode scanning device of any one of claims 1 to 4, wherein the optical path reflection unit further comprises a plane mirror for reflecting the laser emitted by the laser to the rotating mirror group.
9. The laser barcode scanning device of claim 8, wherein the optical path reflection unit further comprises a curved mirror, the flat mirror being disposed on a concave side of the curved mirror, the curved mirror being configured to collect the laser light reflected from the barcode.
10. A laser bar code scanning method is characterized by comprising the following steps: switching the single-line laser bar code scanning mode to the full-line laser bar code scanning mode, and sending a full-line laser bar code scanning instruction, or switching the full-line laser bar code scanning mode to the single-line laser bar code scanning mode, and sending a single-line laser bar code scanning instruction;
the motor rotating speed sensor detects the rotating speed of the motor driving the rotating mirror group to rotate, and when the rotating speed of the motor is too high or too low, the rotating speed of the motor is adjusted to a preset rotating speed;
controlling a laser to continuously emit laser according to the full-line laser bar code scanning instruction; controlling the laser to emit laser only when a signal of a sensing mark on the rotating mirror group is acquired according to the single-line laser bar code scanning instruction, and closing the laser when the signal of the sensing mark is not acquired; the rotating mirror group reflects the continuously emitted laser into multi-line laser to the fixed mirror group to form full-line laser bar code scanning light; reflecting laser emitted only when the motor rotating speed sensor acquires the signal of the induction mark to a reflecting surface in the middle of the fixed mirror group to form single-line laser bar code scanning light;
the single-line laser bar code scanning light or the full-line laser bar code scanning light is emitted to the bar code, and the curved mirror converges the laser reflected back from the bar code to the photoelectric switching circuit to convert the optical information into an electric signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN106897646A (en) * | 2017-01-17 | 2017-06-27 | 珠海格力电器股份有限公司 | Bar code information input method and device |
| DE102017127420A1 (en) * | 2017-11-21 | 2019-05-23 | Sick Ag | Polygon scanner and method for capturing objects in a surveillance area |
| CN108465939B (en) * | 2018-02-09 | 2020-10-27 | 深圳市华星光电半导体显示技术有限公司 | Laser etching device and laser etching method thereof |
| CN111352236A (en) * | 2020-04-13 | 2020-06-30 | 陕西伟景机器人科技有限公司 | Laser scanning device |
| CN111810916A (en) * | 2020-08-05 | 2020-10-23 | 摩登汽车(盐城)有限公司 | Automobile illumination adjusting device |
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