CN107169391B - Novel handheld laser reading device based on OCR recognition technology - Google Patents
Novel handheld laser reading device based on OCR recognition technology Download PDFInfo
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- CN107169391B CN107169391B CN201710343753.6A CN201710343753A CN107169391B CN 107169391 B CN107169391 B CN 107169391B CN 201710343753 A CN201710343753 A CN 201710343753A CN 107169391 B CN107169391 B CN 107169391B
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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
- G06K7/10821—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
- G06K7/10881—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 constructional details of hand-held scanners
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
- G06V30/10—Character recognition
- G06V30/14—Image acquisition
- G06V30/142—Image acquisition using hand-held instruments; Constructional details of the instruments
Abstract
The invention discloses a novel handheld laser reading device based on an OCR (optical character recognition) technology, which comprises a handheld reader and an installation base, wherein the handheld reader is arranged on the installation base; the reader comprises a shell, an OCR recognition device and a laser code scanning device, wherein the OCR recognition device and the laser code scanning device are arranged in the shell; the front end of the base is provided with a front accommodating groove for accommodating the head of the outer shell, the rear end of the base is provided with a rear accommodating groove for accommodating the tail of the outer shell, and a charging plug is arranged in the rear accommodating groove; the OCR recognition device comprises an image acquisition unit, a memory, an OCR character recognition unit, a controller and a character voice conversion unit. The information reading device can simultaneously identify the graph, the two-dimensional code and the like, and can be freely selected according to the needs of a user; simultaneously, the device optimizes the charging system and the display mode, so that a user can flexibly select the displayed information, and the device is more convenient and intelligent.
Description
Technical Field
The invention relates to the technical field of image recognition, in particular to a novel handheld laser reading device based on an OCR recognition technology.
Background
At present, in most places needing personnel identity or goods verification, the personnel identity or goods type and the like are generally confirmed by adopting a manual verification method, so that the efficiency is not high, and uncertainty is brought to the verification result; although some people adopt portrait comparison for verification, the precision of simple portrait comparison is low, and the requirement that the identity of a bearer needs to be checked by related departments at present cannot be met.
A barcode reader is a device for reading barcode information, and is a common information reading device, which uses an infrared light source to emit infrared light, then uses a chip to decode the infrared light source according to the reflected result, and finally returns the correct character represented by the barcode. Bar code scanners are classified into palm type and desktop type, and palm type is classified into optical cover type and laser type. The number of light beams of the light cover type laser is about 1-2, while most desktop laser types are laser types, the number of the laser light beams is 1-20, the laser light beams are different, the scanning speed is higher as the number of the laser light beams is larger, and therefore, like supermarkets and other places, the scanning principle of a desktop scanner and a palm scanner is mostly used as the required speed is high, and the light cover type: a plurality of light sources are emitted at the front end, and then the position and the size of the reflection of the white line in the bar code are received to judge data; laser type: the front end emits linear infrared rays, the bar code is scanned back and forth from left to right, and then the position and the size reflected by a white line in the bar code are received to judge data.
However, the function of the prior art scanner or information reading device is single, and the prior art scanner or information reading device cannot be applied to various occasions, for example, the prior art scanner or information reading device cannot be used for scanning the identity of people and goods at the same time, so that the application range of the prior art scanner or information reading device is influenced to a certain extent.
Disclosure of Invention
The invention aims to provide a novel handheld laser reading device based on an OCR recognition technology.
In order to achieve the above object, an embodiment of the present invention provides a novel handheld laser reading device based on OCR recognition technology, including a handheld reader and a mounting base; the reader comprises a shell, an OCR recognition device and a laser code scanning device, wherein the OCR recognition device and the laser code scanning device are arranged in the shell;
the front end of the base is provided with a front accommodating groove for accommodating the head of the outer shell, the rear end of the base is provided with a rear accommodating groove for accommodating the tail of the outer shell, and a charging plug is arranged in the rear accommodating groove;
the OCR recognition device includes:
the image acquisition unit is used for scanning an object to form an image;
the memory is used for storing the acquired images and pre-stored information;
the OCR character recognition unit is used for recognizing character information in the image and storing the character information in the memory;
the controller is used for comparing and matching the character information identified by the OCR character identification unit with the pre-stored information in the memory;
a text-to-speech conversion unit; and converting the pre-stored information matched with the controller into an audio file, and playing the pre-stored information through a player.
Preferably, the laser bar code scanner is a laser bar code scanner, and the laser bar code scanner comprises a laser source, an optical scanner, an optical receiver, an optical-to-electrical converter, a signal amplifier and a decoder.
Preferably, a power supply module is arranged in the shell and comprises a storage battery, a charging interface and a power supply control unit; the power supply control unit comprises an electromagnet, a current controller connected with the electromagnet in series, a single chip microcomputer connected with the current controller, a charging control assembly connected to a storage battery charging circuit, and a charging key and a clock module connected with the single chip microcomputer;
the charging control assembly comprises an insulating plate, a containing seat arranged on the insulating plate, a magnetic induction sheet arranged in the containing seat and having an insulated surface, and an arc-shaped metal elastic sheet arranged below the magnetic induction sheet, wherein the lower end of the metal elastic sheet is provided with an electric contact sheet;
the periphery of a telescopic rod of the electromagnet is sleeved with a spring, the top end of the telescopic rod is provided with a linkage lever, the linkage lever is arranged on a rotating shaft, and the other end of the linkage lever is provided with a magnet;
the storage battery provides electric energy for the electromagnet, when the single chip microcomputer receives a signal of the charging button, the electromagnet is connected with a circuit of the storage battery, after the electromagnet is connected, the telescopic rod retracts to extrude the spring and drives the linkage lever to swing, so that the magnet moves to the position right below the magnetic induction sheet, the magnetic induction sheet presses the metal elastic sheet under the attraction of the magnet, the electric contact sheet is further connected with the circuit of the insulating plate, and the charging circuit is connected;
after the single chip receives the signal of the clock module, the electromagnet is controlled to be powered off, the telescopic rod of the electromagnet extends outwards under the restoring force of the spring, the pressure of the metal elastic sheet on the magnetic induction sheet is reduced, the metal elastic sheet returns to the initial position, the electric contact sheet leaves the charging circuit, and the charging circuit stops charging after being disconnected.
Preferably, the tail part of the shell is provided with a blocking handle;
the blocking handle comprises an external connecting body and an internal connecting body; the external connecting body comprises a lubricating cavity and a first cavity; a first spring, an oil carrying pad with oil and a pore plate with a pore are arranged in the lubricating cavity; a first limiting bulge and a second limiting bulge are arranged in the first cavity, and the pore plate is limited on the outer side of the first limiting bulge;
the inner connecting body is arranged in the first cavity and provided with a left sliding chute matched with the first limiting bulge and a right sliding chute matched with the second limiting bulge; the right sliding groove is matched with the second limiting protrusion to limit the maximum length of the inner connecting body extending out of the first cavity;
the inner connecting body is internally provided with a second cavity, and the second cavity is internally provided with a mounting plate and a second spring; the outer end of the inner connecting body is provided with a hand hole;
a driving assembly is arranged in the lubricating cavity and comprises a force application plate, a driving plate with a wedge-shaped lower end is arranged at the tail end of the force application plate, and a driven plate with a wedge-shaped upper end is arranged on the right side of the driving plate; the right end of the driven plate is a movable plate, and the driven plate and the movable plate are both arranged on the slide rail; the first spring is connected with the movable plate;
the top end of the force application plate extends out of the external connecting body, the upper end of the force application plate is provided with an upper step, and a third spring is arranged between the upper step and the inner wall of the external connecting body; the lower end of the force application plate is provided with a lower step which is connected with the driving plate;
when the force application plate extrudes the driving plate to move downwards, the driven plate is driven to move towards the movable plate, and the driven plate drives the movable plate to move rightwards so that the oil carrying pad is contacted with the pore plate; when the force application plate moves upwards under the action of the restoring force of the third spring, the driving plate is driven to move upwards, and the driven plate moves leftwards and returns under the action of the first spring.
Preferably, the outer connecting body is provided with an oil filling hole and a sealing plug for sealing the oil filling hole.
Preferably, the current controller is a PMW pulse width modulator.
Preferably, the housing is provided with an LED lamp mounted on the head of the housing.
Preferably, the containing seat is internally provided with a guide sliding groove, and two ends of the magnetic induction sheet are provided with guide legs matched with the guide sliding groove.
Preferably, the housing is further provided with a touch screen connected to the controller, the touch screen may also be used as a display or a display screen, the touch screen is used for displaying annotations of the image information, and the method for displaying the annotations includes:
a. positioning an annotation area to be identified in the acquired image, and designating a rough position of an item to be identified by an operator to obtain one or two coordinate points; solving an edge image of one or two coordinate points, expanding, performing vertical and horizontal condition expansion by taking the one or two coordinate points as an initial point, and performing expansion by taking an edge point within a certain range away from the initial point as an effective edge point, or not performing expansion to obtain a circumscribed rectangular area only containing items to be identified;
b. identifying the item to be identified through an OCR character identification unit to obtain a character coding stream of the item to be identified, wherein the item to be identified is located in the annotation area to be identified;
c. acquiring information related to the items to be identified according to the character coding stream; retrieving information related to the item to be identified in an annotation database through a text encoding stream; including identity number, warehousing time, remark information and the like;
d. the information retrieved in step C relating to the identified items is displayed below the acquired images, respectively.
In summary, the invention has the following advantages:
the information reading device can simultaneously identify the graph, the two-dimensional code and the like, and can be freely selected according to the needs of a user; simultaneously, the device optimizes the charging system and the display mode, so that a user can flexibly select the displayed information, and the device is more convenient and intelligent.
Drawings
FIG. 1 is a schematic diagram of one embodiment of the present invention;
FIG. 2 is a functional block diagram of a power control unit in one embodiment of the present invention;
FIG. 3 is a schematic diagram of a charging control assembly in accordance with an embodiment of the present invention;
fig. 4 is a schematic view of a stop handle in one embodiment of the present invention.
Wherein, 1, a reader; 2. installing a base; 3. a head portion; 4. a handle; 5. a tail portion; 6. a front accommodating groove; 7. a rear accommodating groove; 8. a charging interface; 9. a charging button; 10. an insulating plate; 11. a housing seat; 12. a magnetic induction sheet; 13. a metal spring sheet; 14. an electrical contact; 15. a spring; 16. a linkage lever; 17. a magnet; 18. a touch screen; 19. an oil filling hole; 20. a charging circuit; 21. an outer connector; 22. an inner connecting body; 23. a lubrication chamber; 24. a first cavity; 25. an oil carrying pad; 26. an orifice plate; 27. a first limit protrusion; 28. a second limit bulge; 29. a left chute; 30. a right chute; 31. a second cavity; 32. mounting a plate; 33. hand hole; 34. a first spring; 35. a second spring; 36. a third spring; 38. a force application plate; 39. a driving plate; 40. a driven plate; 41. a movable plate; 42. a slide rail; 43. and (6) ascending a step.
Detailed Description
The invention provides a novel handheld laser reading device based on an OCR (optical character recognition) technology, which comprises a handheld reader 1 and an installation base 2, wherein the handheld reader is arranged on the handheld reader; the reader 1 corresponds to a code scanning or scanning device, and the mounting base is a device for storing the reader in a non-use state and charging a battery in the reader as appropriate. The mounting base can be provided with screw holes, and the mounting base can be mounted on a wall or any place by matching with screws, and can also be directly horizontally placed on a table top. The reader is provided with two independent scanning or recognition systems, wherein one recognition system is an OCR recognition device, the other recognition system is a laser scanning device, and the two recognition devices can operate independently and can also use the same processor or single chip microcomputer together. The OCR device may be adapted to scan a graphic, that is, recognize a character of a specific image without a barcode or a two-dimensional code, and further process the character to obtain information required by a user, for example, call information in a database to display or play a voice according to the recognized character content. The laser scanning device has the same working principle as the existing two-dimensional code scanning gun or the existing bar code scanner, and the laser scanning device in the prior art is fused into the reader to realize the function of the laser code scanner.
The reader is a handheld work portion and includes a housing and an OCR recognition device and a laser code scanner mounted within the housing. The laser bar code scanner comprises a laser source, an optical scanner, an optical receiver, a photoelectric converter, a signal amplifier and a decoder.
The shell comprises a head part 3, a handle 4 and a tail part 5, and an LED lamp is arranged on the shell and is arranged at the head part of the shell; the image acquisition unit of the OCR recognition device can be a camera or a camera, and the laser source, the optical scanner and the optical receiver of the laser code scanning device are arranged on the head of the shell, so that the signal to be recognized can be conveniently scanned at the head position or an image can be conveniently grabbed.
The lower end of the base is flush, so that the installation and the flat placement are convenient, and the structure of the upper end of the base corresponds to the shape of the shell, so that the shell can be stably placed at the corresponding position of the base. For example, the front end of the base is provided with a front accommodating groove 6 for accommodating the head of the outer shell, the rear end is provided with a rear accommodating groove 7 for accommodating the tail of the outer shell, and a charging plug is arranged in the rear accommodating groove and is charged through the charging plug.
An OCR recognition apparatus of the present invention includes:
the image acquisition unit is used for scanning an object to form an image;
the memory is used for storing the acquired images and pre-stored information;
the OCR character recognition unit is used for recognizing character information in the image and storing the character information in the memory;
the controller is used for comparing and matching the character information identified by the OCR character identification unit with the pre-stored information in the memory;
a text-to-speech conversion unit; and converting the pre-stored information matched with the controller into an audio file, and playing the pre-stored information through a player.
The invention obtains the image information of the scanned object through the image acquisition unit, for example, the employee certificate or the goods label is scanned to obtain the corresponding image and picture, the picture comprises the text content which is designed in advance by the user, the text content comprises the name of the employee or the name of the goods, and the like, and can also comprise other items, such as the production place, the preservation period, the storage method, and the like. Therefore, the information prestored in the memory can be called through the recognized employee name or code and the goods name or code in the matching process, and then language playing is carried out.
After the image is obtained, the character content on the image is identified through an OCR character identification unit, and the content representation or other corresponding information is identified according to the character content. For example, when the name of the employee is recognized from the image, the pre-stored information corresponding to the name, such as the date of birth, the time of entering a company, the job title and other related information can be called and matched, and after the matching is completed, the corresponding pre-stored information is converted into voice to be played; this allows the user to directly know the situation of the employee.
Because the playing speed of voice is prior, the efficiency is low, and the voice is not suitable for playing a large amount of information, so that a user can manually select more information to be viewed, detailed information of staff or annotation information of cargos can be stored in a memory in advance and also become another kind of pre-stored information, the pre-stored information can be displayed according to actual needs instead of being played through voice, a touch screen 18 needs to be configured on a shell, and annotations corresponding to character contents in the image information are displayed through a display.
Therefore, the shell of the invention is also provided with a touch screen connected with the controller, the touch screen is used for displaying annotations corresponding to the image information, and the method for displaying the annotations comprises the following steps:
a. positioning an annotation region needing to be identified in an acquired image, wherein the image comprises a plurality of identifiable items; each item may be individually lined up; for example, when a goods signboard is scanned, a scanned image is displayed on the display, items on the image can be text contents on the signboard, the items comprise production areas, freshness dates, preservation methods and the like, and the items can be printed on the signboard in advance.
An operator specifies a rough position of an item to be identified to obtain one or two coordinate points; solving an edge image of one or two coordinate points, expanding, performing vertical and horizontal condition expansion by taking the one or two coordinate points as an initial point, and performing expansion by taking an edge point within a certain range away from the initial point as an effective edge point, or not performing expansion to obtain a circumscribed rectangular area only containing items to be identified;
specifically, when the photographed image is displayed on the touch screen interface, the user specifies the rough position of the item to be recognized through interactive operation, and by this step, we obtain the next coordinate information in the image. The interaction mode is as follows: any point in the rectangle can be clicked by a hand, and a coordinate point in a user click area can be obtained; a rectangular box containing the item can also be drawn, and two coordinate points in the user-specified area can be obtained.
When the user interacts, the user may not directly locate the precise location of the item to be processed, and most of the time, one or two coordinate points are given. By means of the coordinate points, the character area of the project needing to be processed is intelligently located. Taking a coordinate point given by a user as an example, firstly obtaining an edge image, then expanding, then carrying out up-down and left-right condition expansion by taking the coordinate as an initial point, namely, taking the edge point with a certain distance as an effective edge point, and carrying out expansion, otherwise, not expanding, and obtaining an external rectangular area only containing the item to be identified, namely the area in the item to be identified.
b. Identifying the item to be identified through an OCR character identification unit to obtain a character coding stream of the item to be identified, wherein the item to be identified is located in the annotation area to be identified;
c. acquiring information related to the items to be identified according to the character coding stream; retrieving information related to the item to be identified in an annotation database through a text encoding stream; including identity number, warehousing time, remark information and the like;
d. the information retrieved in step C relating to the identified items is displayed below the acquired images, respectively.
The information displayed by the voice playing and the display screen is of different types, and specifically comprises the following steps: the content of the voice playing is one part of the content of the pre-stored information, and the annotation information displayed on the display screen is the other part of the content of the pre-stored information. Taking the goods identification card as an example: the goods identification card or the identification plate is printed with information such as goods name, code, production place, preservation period, storage method and the like, and the categories can be used as items in the invention.
When the voice is played, the corresponding information of the goods is inquired, matched and retrieved through the goods code, and the corresponding part of prestored information is played through the voice. The content played back may also include a summary of the various items on the sign, the content played back being pre-customized.
When a user selects a certain item, the annotation information corresponding to the item is called out from the memory, and is displayed on the display, namely the information retrieved in the step C.
The invention also adopts a new charging mode, which can avoid the damage of the storage battery caused by the fact that the storage battery is still connected with the commercial power after being fully charged. According to the invention, the charging circuit is optimized, so that the charging time is controlled, and the problem of long-time charging caused by forgetting of workers is solved.
Specifically, a power supply module is arranged in the shell, and comprises a storage battery, a charging interface 8 and a power supply control unit; the battery can be for the power supply of whole reading device, and the charging interface cooperates with the charging plug on the installation base.
The power supply control unit comprises an electromagnet, a current controller connected with the electromagnet in series, a single chip microcomputer connected with the current controller, a charging control assembly connected to a storage battery charging circuit, a charging key 9 connected with the single chip microcomputer and a clock module. The current controller is a PMW pulse width modulator and can be matched with a single chip microcomputer to realize the control of the current of the input electromagnet.
The charging control assembly comprises an insulating plate 10, a containing seat 11 installed on the insulating plate, a magnetic induction sheet 12 arranged in the containing seat and having an insulated outer surface, and an arc-shaped metal elastic sheet 13 arranged below the magnetic induction sheet, wherein an electric contact sheet 14 is arranged at the lower end of the metal elastic sheet. The charging circuit 20 of battery concatenates the insulation board, and the charging circuit is connected and is had the clearance of certain width on the insulation board, makes the charging circuit form and opens circuit like this. When the electrical contact moves down to this pause, the circuit is completed.
The periphery of the telescopic rod of the electromagnet is sleeved with a spring 15, the top end of the telescopic rod is provided with a linkage lever 16, the linkage lever is arranged on the rotating shaft, and the other end of the linkage lever is provided with a magnet 17. In order to enable the telescopic rod of the electromagnet to freely drive the linkage lever to rotate, a movable rod can be arranged between the telescopic rod and the linkage lever, and two ends of the movable rod are respectively and rotatably connected with the telescopic rod and the linkage lever; also can use a bullet muscle to connect, the telescopic link is lengthening the bullet muscle when flexible.
The storage battery provides electric energy for the electromagnet, when the single chip microcomputer receives a signal of the charging button, the electromagnet is connected with a circuit of the storage battery, after the electromagnet is connected, the telescopic rod retracts to extrude the spring and drives the linkage lever to swing, so that the magnet moves to the position right below the magnetic induction sheet, the magnetic induction sheet presses the metal elastic sheet under the attraction of the magnet, the electric contact sheet is further connected with the circuit of the insulating plate, and the charging circuit is connected;
after the single chip receives the signal of the clock module, the electromagnet is controlled to be powered off, the telescopic rod of the electromagnet extends outwards under the restoring force of the spring, the pressure of the metal elastic sheet on the magnetic induction sheet is reduced, the metal elastic sheet returns to the initial position, the electric contact sheet leaves the charging circuit, and the charging circuit stops charging after being disconnected.
Therefore, when a user presses the charging button during charging, the charging circuit forms a passage, and after the charging is carried out for a certain time, the electromagnet is powered off to disconnect the charging circuit, so that the charging is finished; this can prevent the battery from being connected to the utility power all the time. The charging time can be designed in advance, and is set to be within 3 hours. When the charging time reaches the preset time, the electromagnet is disconnected, when the controller receives the situation that the charging key is pressed again, the second round of charging is carried out, at the moment, the timing module counts again, and the electromagnet is disconnected after the preset time is reached again.
Meanwhile, in order to enable the magnetic induction sheet to move up and down more smoothly, the magnetic induction sheet is provided with the guide sliding groove inside the containing seat, and the two ends of the magnetic induction sheet are provided with the guide pins matched with the guide sliding groove.
In order to facilitate the tail part to be held more easily without being separated when the hand is held, the tail part of the shell is provided with a blocking handle which can be extended out when necessary, so that the back end of the hand of a user is provided with a blocking piece, and the hand cannot slide.
The blocking handle comprises an external connecting body 21 and an internal connecting body 22; the external connection body comprises a lubrication cavity 23 and a first cavity 24; a first spring 34, an oil carrying pad 25 with oil and a pore plate 26 with a fine hole are arranged in the lubricating cavity; a first limit bulge 27 and a second limit bulge 28 are arranged in the first cavity, and the pore plate is limited on the outer side of the first limit bulge;
the inner connecting body is arranged in the first cavity and is provided with a left sliding chute 29 matched with the first limiting bulge and a right sliding chute 30 matched with the second limiting bulge; the right sliding groove is matched with the second limiting protrusion to limit the maximum length of the inner connecting body extending out of the first cavity;
the inner connecting body is internally provided with a second cavity 31, and a mounting plate 32 and a second spring 35 are arranged in the second cavity; the outer end of the inner connecting body is provided with a hand hole 33; the hand hole is convenient for the user to apply force more conveniently.
A driving assembly is arranged in the lubricating cavity and comprises a force application plate, a driving plate with a wedge-shaped lower end is arranged at the tail end of the force application plate, and a driven plate with a wedge-shaped upper end is arranged on the right side of the driving plate; the right end of the driven plate is a movable plate, and both the driven plate and the movable plate are arranged on the slide rail 42; the first spring is connected with the movable plate;
the top end of the force application plate extends out of the external connecting body, the upper end of the force application plate 38 is provided with an upper step 43, and a third spring 36 is arranged between the upper step and the inner wall of the external connecting body; the lower end of the force application plate is provided with a lower step which is connected with the driving plate;
when the force application plate presses the driving plate 39 to move downwards, the driven plate 40 is driven to move towards the moving plate 41, and the driven plate drives the moving plate to the right so that the oil carrying pad is in contact with the orifice plate; when the force application plate moves upwards under the action of the restoring force of the third spring, the driving plate is driven to move upwards, and the driven plate moves leftwards and returns under the action of the first spring.
In the preferred embodiment of the present invention, the external connector is provided with a fuel filler hole 19 and a sealing plug for sealing the fuel filler hole, so that the fuel filler hole is also opened on the housing and sealed by the sealing plug. The lubricating oil soaked on the oil carrying pad is wear-resistant lubricating oil, and comprises the following components: 50-100 parts of base oil and 3-5 parts of diethyl phosphite; 2-5 parts of dibutyl phosphite, 2-5 parts of 2-ethylhexyl phosphate and 1-2 parts of diethyl sebacate; 2 to 5 parts of methyl laurate and 2 to 5 parts of trimethylolpropane tri (2-mercaptoacetate). The wear resistance of the lubricating oil is better than that of the lubricating oil in the prior art, and a wear resistance experiment shows that the wear resistance of the lubricating oil is improved to a certain extent by adding trimethylolpropane tri (2-mercaptoacetate), methyl laurate and diethyl sebacate, for example, 50-100 parts of base oil and 3-5 parts of diethyl phosphite; 2-5 parts of dibutyl phosphite and 2-5 parts of 2-ethylhexyl phosphate, wherein the wear resistance of trimethylolpropane tri (2-mercaptoacetate) is improved by about 12% by independently adding the lubricating oil, the wear resistance of methyl laurate is improved by about 5% by independently adding the lubricating oil, the wear resistance of diethyl sebacate is improved by about 8% by independently adding the lubricating oil, and the base oil can be paraffin base oil.
In general, the mounting plate can be retracted when the code does not need to be scanned, and the external connecting body is nested inside the tail end of the shell to realize fixation. When the yard is swept to needs through the hand hole with the in-connection body pull out can, the second spring drive mounting panel upwards emits out the second cavity this moment, the mounting panel can be in perpendicularly with the shell body, just so can let user's hand rear end form the screens for the user is difficult for the landing when handheld.
In addition, because the interior connector needs good lubrication just can be convenient for slide in the external connection body, consequently when needs lubricate, can press the application of force board for the lubricating oil that carries the oil blanket is extruded and is entered into the orifice plate, then flows into interior connector left end department and lubricate. After lubrication is finished, the driving plate, the driven plate and the like can return automatically, and the automatic lubrication type automatic oil return device is lighter and more sensitive in use.
Claims (6)
1. The utility model provides a novel handheld laser reading device based on OCR recognition technology which characterized in that: comprises a hand-held reader and a mounting base; the reader comprises a shell, an OCR recognition device and a laser code scanning device, wherein the OCR recognition device and the laser code scanning device are installed in the shell;
the front end of the base is provided with a front accommodating groove for accommodating the head of the outer shell, the rear end of the base is provided with a rear accommodating groove for accommodating the tail of the outer shell, and a charging plug is arranged in the rear accommodating groove;
the OCR recognition device includes:
the image acquisition unit is used for scanning an object to form an image;
the memory is used for storing the acquired images and pre-stored information;
the OCR character recognition unit is used for recognizing character information in the image and storing the character information in the memory;
the controller is used for comparing and matching the character information identified by the OCR character identification unit with the pre-stored information in the memory;
a text-to-speech conversion unit; converting the pre-stored information matched with the controller into an audio file, and playing the pre-stored information through a player;
a power supply module is arranged in the shell and comprises a storage battery, a charging interface and a power supply control unit; the power supply control unit comprises an electromagnet, a current controller connected with the electromagnet in series, a single chip microcomputer connected with the current controller, a charging control assembly connected to a storage battery charging circuit, and a charging key and a clock module connected with the single chip microcomputer;
the charging control assembly comprises an insulating plate, a containing seat arranged on the insulating plate, a magnetic induction sheet arranged in the containing seat and having an insulated surface, and an arc-shaped metal elastic sheet arranged below the magnetic induction sheet, wherein the lower end of the metal elastic sheet is provided with an electric contact sheet;
the periphery of a telescopic rod of the electromagnet is sleeved with a spring, the top end of the telescopic rod is provided with a linkage lever, the linkage lever is arranged on a rotating shaft, and the other end of the linkage lever is provided with a magnet;
the storage battery provides electric energy for the electromagnet, when the single chip microcomputer receives a signal of the charging button, the electromagnet is connected with a circuit of the storage battery, after the electromagnet is connected, the telescopic rod retracts to extrude the spring and drives the linkage lever to swing, so that the magnet moves to the position right below the magnetic induction sheet, the magnetic induction sheet presses the metal elastic sheet under the attraction of the magnet, the electric contact sheet is further connected with the circuit of the insulating plate, and the charging circuit is connected;
after the single chip receives the signal of the clock module, the single chip controls the electromagnet to be powered off, at the moment, the telescopic rod of the electromagnet extends outwards under the restoring force of the spring, the pressure of the metal elastic sheet on the magnetic induction sheet is reduced, the metal elastic sheet returns to the initial position, the electric contact sheet leaves the charging circuit, and the charging circuit stops charging after being disconnected.
2. A novel handheld laser reading device based on OCR recognition technology as recited in claim 1 wherein: the laser bar code scanner comprises a laser source, an optical scanner, an optical receiver, a photoelectric converter, a signal amplifier and a decoder.
3. A novel handheld laser reading device based on OCR recognition technology as recited in claim 1 wherein: a blocking handle is arranged at the tail part of the shell;
the blocking handle comprises an external connecting body and an internal connecting body; the external connecting body comprises a lubricating cavity and a first cavity; a first spring, an oil carrying pad with oil and a pore plate with a pore are arranged in the lubricating cavity; a first limiting bulge and a second limiting bulge are arranged in the first cavity, and the pore plate is limited on the outer side of the first limiting bulge;
the inner connecting body is arranged in the first cavity and provided with a left sliding chute matched with the first limiting bulge and a right sliding chute matched with the second limiting bulge; the right sliding groove is matched with the second limiting protrusion to limit the maximum length of the inner connecting body extending out of the first cavity;
the inner connecting body is internally provided with a second cavity, and the second cavity is internally provided with a mounting plate and a second spring; the outer end of the inner connecting body is provided with a hand hole;
a driving assembly is arranged in the lubricating cavity and comprises a force application plate, a driving plate with a wedge-shaped lower end is arranged at the tail end of the force application plate, and a driven plate with a wedge-shaped upper end is arranged on the right side of the driving plate; the right end of the driven plate is a movable plate, and the driven plate and the movable plate are both arranged on the slide rail; the first spring is connected with the movable plate;
the top end of the force application plate extends out of the external connecting body, the upper end of the force application plate is provided with an upper step, and a third spring is arranged between the upper step and the inner wall of the external connecting body; the lower end of the force application plate is provided with a lower step, and the lower step is connected with the driving plate;
the driven plate is driven to move towards the movable plate when the force application plate extrudes the driving plate to move downwards, and the driven plate drives the movable plate to move rightwards so that the oil carrying pad is contacted with the pore plate; when the force application plate moves upwards under the action of the restoring force of the third spring, the driving plate is driven to move upwards, and the driven plate moves leftwards and returns under the action of the first spring.
4. A novel handheld laser reading device based on OCR recognition technology as recited in claim 3, wherein: the outer connector is provided with an oil filling hole and a sealing plug for sealing the oil filling hole.
5. A novel handheld laser reading device based on OCR recognition technology as recited in claim 1 wherein: the current controller is a PMW pulse width modulator.
6. A novel handheld laser reading device based on OCR recognition technology as recited in claim 1 wherein: the inside of holding seat has the direction spout, the both ends of magnetism are felt the piece and are disposed the direction foot with direction spout complex.
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| CN112990184A (en) * | 2021-02-25 | 2021-06-18 | 读书郎教育科技有限公司 | Scanning pen device and method capable of adjusting size of shot font |
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| CN203950451U (en) * | 2014-03-14 | 2014-11-19 | 许昌学院 | A kind of translating mixed the bilingual true man electronic equipment that pronounces |
| CN105573201B (en) * | 2015-12-16 | 2017-11-28 | 浙江中烟工业有限责任公司 | A kind of information scanning retrieves wireless terminal device |
| CN105893997A (en) * | 2016-04-20 | 2016-08-24 | 华南理工大学 | Image and text scanning pen and scanning method for area-of-interest for users |
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