CN113973159A - Image scanning system and scanning method - Google Patents
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Abstract
The invention provides an image scanning system and a scanning method. The image scanning system includes: the light source assemblies are different in angle from the scanned object; the sensor is used for controlling the light-emitting process of the light source assemblies; the image acquisition structure is electrically connected with the sensor and is used for receiving signals transmitted by the sensor; and the upper computer is electrically connected with the image acquisition structure and is used for receiving signals transmitted by the image acquisition structure and displaying images scanned by each light source component. The invention solves the problem of large volume of the image scanning system in the prior art.
Description
Technical Field
The invention relates to the technical field of sensing equipment, in particular to an image scanning system and an image scanning method.
Background
The industrial camera converts received optical signals into electrical signals, converts continuous analog electrical signals into discrete digital signals through analog-to-digital conversion, digitally processes the discrete digital signals through a specific interface, transmits the image signals to the image acquisition card through a cable, and uploads the image signals to the upper computer after the image acquisition card caches and pre-processes the received image signals, and the upper computer processes the images and outputs a judgment result.
In the practical scanning application, the defect points of the detected object need to be polished in different angles, different directions and different exposure brightness under different light rays, so that the defect characteristics of the defective products are fully extracted, and the imaging is clearer and more obvious. However, when the existing image scanning system for industrial detection is used for multi-angle or multi-light-source scanning, an industrial camera is respectively configured at each angle or each light source, each industrial camera transmits acquired image signals to the image acquisition card which is connected with the industrial camera, images acquired by all the image acquisition cards are uploaded to an upper computer, and the upper computer performs image processing and outputs judgment results. The construction of such multiple lenses and multiple industrial cameras is costly and bulky.
That is, the image scanning system in the prior art has a problem of large volume.
Disclosure of Invention
The invention mainly aims to provide an image scanning system and a scanning method, and aims to solve the problem that the image scanning system in the prior art is large in size.
In order to achieve the above object, according to one aspect of the present invention, there is provided an image scanning system comprising: the light source assemblies are different in angle from the scanned object; the sensor is used for controlling the light-emitting process of the light source assemblies; the image acquisition structure is electrically connected with the sensor and is used for receiving signals transmitted by the sensor; and the upper computer is electrically connected with the image acquisition structure and is used for receiving signals transmitted by the image acquisition structure and displaying images scanned by each light source component.
Further, at least two of the plurality of light source assemblies are positioned on two sides of the scanned object.
Furthermore, the irradiation direction of the light source component positioned at one side of the scanned object close to the sensor is obliquely arranged relative to the scanned object; the irradiation direction of the light source assembly positioned on the side of the scanned object far away from the sensor is vertical to the scanned object.
Further, a sensor is located on one side of the scanned object, the sensor comprising: the frame body is provided with an accommodating space and a light inlet communicated with the accommodating space; the lens is arranged in the frame, and the object side surface of the lens faces the light inlet to receive the information light after the scanned object is scanned by the light source assembly.
Further, the sensor further comprises: a power supply module; the photoelectric conversion module is electrically connected with the power supply module, is positioned on the image side of the lens and converts the information light emitted by the lens into an electric signal; and the signal processing module is electrically connected with the power supply module and is used for receiving the electric signals and transmitting the electric signals corresponding to the light source assemblies to the image acquisition structure in a differentiated manner.
Further, the photoelectric conversion module is disposed on the power supply module.
Further, the signal processing module includes: the digital processing unit is used for receiving the electric signals, converting the electric signals into discrete signals and calibrating the discrete signals of each light source component; and the discrete signals of each light source component are transmitted to the image acquisition structure through different interfaces respectively.
Further, the sensor also comprises a light source control unit, the light source control unit is electrically connected with the light source assemblies, and the light source control unit controls the light emitting time of each light source assembly so that the light source assemblies can emit light in a time-sharing mode.
Furthermore, the image scanning system further comprises a driving assembly, the driving assembly is in driving connection with the light source assemblies and is electrically connected with the light source control unit, and the light source control unit controls the driving positions and the driving power of the driving assembly so as to adjust the positions of the light source assemblies and the angles of the light sources irradiating the scanned objects.
According to another aspect of the present invention, there is provided a scanning method, in which the image scanning system scans by using a scanning method, the scanning method includes: step S10: the method comprises the steps that a light source control unit of an image scanning system is obtained, and the light source control unit controls a plurality of light source components of the image scanning system to emit light in different periods so as to sequentially and alternately light and irradiate a scanned object in a scanning period; step S20: the method comprises the steps that a photoelectric conversion module of an image scanning system is obtained, the photoelectric conversion module receives information light of a scanned object in a transmission or reflection time interval mode and converts the information light into an electric signal; step S30: acquiring a digital processing unit of the image scanning system, receiving the electric signal by the digital processing unit, converting the electric signal into a discrete signal, marking the discrete signals of different light source components, and transmitting the marked discrete signals to an image acquisition structure of the image scanning system; step S40: and acquiring an upper computer of the image scanning system, wherein the upper computer receives the marked discrete signals transmitted by the image acquisition structure and synthesizes the same marked discrete signals into a scanning image so as to form the scanning image of each light source component.
By applying the technical scheme of the invention, the image scanning system comprises a sensor, an image acquisition structure, an upper computer and a plurality of light source components, wherein the angles between the plurality of light source components and a scanned object are different; the light source assemblies are electrically connected with the sensor, and the sensor controls the light emitting process of the light source assemblies; the image acquisition structure is electrically connected with the sensor and is used for receiving signals transmitted by the sensor; the upper computer is electrically connected with the image acquisition structure and is used for receiving signals transmitted by the image acquisition structure and displaying images scanned by each light source component.
Through setting a plurality of light source subassemblies and the angle between the scanned article to different, can realize that the flaw point of being scanned article carries out the scanning under the multiple condition of different angles, different directions, different exposure luminance under different light to fully extract the flaw characteristic of defective products, let the formation of image more clear, it is more obvious. And a plurality of light source subassemblies all are connected with the sensor electricity, can realize that a sensor can gather the scanning information that a plurality of light source subassemblies shine down, greatly reduced image scanning system's volume, practiced thrift image scanning system's cost of manufacture. In this application, a sensor corresponds a plurality of light source subassemblies, and image acquisition structure, host computer and sensor one-to-one set up, have effectively reduced image scanning system's volume.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 shows a schematic block diagram of an image scanning system according to an alternative embodiment of the present invention;
FIG. 2 shows a schematic diagram of the sensor of FIG. 1;
FIG. 3 is a schematic diagram illustrating the sensor in FIG. 1 performing time-sharing control, image analog signal generation, and digital processing on the collected data of each light source module by the digital processing unit;
FIG. 4 is a schematic diagram showing the decomposition and synthesis of digital image signals of a plurality of light source modules with data markers by an image processing unit in the upper computer in FIG. 1;
fig. 5 shows a flow chart of the scanning method of the present invention.
Wherein the figures include the following reference numerals:
11. a first light source assembly; 12. a second light source assembly; 13. a third light source assembly; 20. an object to be scanned; 30. a sensor; 31. a frame body; 32. a lens; 33. a power supply module; 34. a photoelectric conversion module; 35. a signal processing module; 351. a digital processing unit; 352. an interface; 36. a light source control unit; 40. an image acquisition structure; 50. an upper computer; 51. an image processing unit; 60. an electrical cable.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like, generally refer to the orientation as shown in the drawings, or to the component itself in a vertical, perpendicular, or gravitational orientation; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.
The invention provides an image scanning system and a scanning method, aiming at solving the problem that an image scanning system in the prior art is large in size.
As shown in fig. 1 to 5, the image scanning system includes a sensor 30, an image acquisition structure 40, an upper computer 50, and a plurality of light source assemblies, which have different angles with respect to the scanned object 20; the plurality of light source assemblies are all electrically connected with the sensor 30, and the sensor 30 controls the light-emitting processes of the plurality of light source assemblies; the image acquisition structure 40 is electrically connected with the sensor 30, and the image acquisition structure 40 is used for receiving signals transmitted by the sensor 30; the upper computer 50 is electrically connected with the image acquisition structure 40, and the upper computer 50 is used for receiving signals transmitted by the image acquisition structure 40 and displaying images scanned by each light source component.
Set to different through the angle with a plurality of light source subassemblies and between the scanned object 20, can realize that the flaw of scanned object 20 carries out the scanning under the multiple condition of different angles, different directions, different exposure luminance under different light to fully extract the flaw characteristic of defective products, let the formation of image clear more, it is more obvious. And a plurality of light source subassemblies all are connected with sensor 30 electricity, can realize that a sensor 30 can gather the scanning information under a plurality of light source subassemblies shine, greatly reduced image scanning system's volume, practiced thrift image scanning system's cost of manufacture. In this application, one sensor 30 corresponds to a plurality of light source assemblies, and image acquisition structure 40, host computer 50 and sensor 30 one-to-one set up, have effectively reduced image scanning system's volume.
It should be noted that, the time-sharing control of the light source assemblies by the sensor 30 is performed, so that the light source assemblies emit light at different times, and the scanned object 20 is irradiated at different times, so that the scanned information acquired by the sensor 30 during scanning information acquisition is scanning information irradiated by a single light source assembly, and thus the image scanning system completes scanning, and then the image acquisition structure 40 and the upper computer 50 generate scanned images irradiated by each light source assembly individually, so that the defect characteristics of defective products are extracted clearly, and multi-angle imaging is ensured.
As shown in fig. 1, at least two of the plurality of light source modules are located at both sides of the scanned object 20. At least two of the light source assemblies are respectively arranged at two sides of the scanned object 20, so that the sensor 30 can acquire the transmitted light of the scanned object 20 as the scanning information and also can acquire the reflected light of the scanned object 20 as the scanning information, and the diversity of the scanning information is greatly increased.
In the embodiment shown in fig. 1, after the light source assembly located between the sensor 30 and the scanned object 20 irradiates the scanned object 20, the scanned object 20 reflects light into the sensor 30, and the reflected light of the scanned object 20 is collected by the sensor 30. After the light source assembly located on the side of the scanned object 20 away from the sensor 30 irradiates the scanned object 20, the scanned object 20 projects light into the sensor, and the sensor 30 collects transmitted light of the scanned object 20. This enables multi-angle analysis of the scanned object 20.
As shown in fig. 1, the irradiation direction of the light source assembly on the side of the object 20 close to the sensor 30 is inclined with respect to the object 20. If the irradiation direction of the light source assembly located on the side of the object 20 close to the sensor 30 is perpendicular to the object 20, the reflected light is relatively small, and the collected information is incomplete. And the inclined arrangement enables a part of light to be reflected by the scanned object 20, and then the reflected light enters the sensor 30, so that the integrity of the acquired information can be ensured.
As shown in fig. 1, the irradiation direction of the light source assembly located on the side of the scanned object 20 away from the sensor 30 is perpendicular to the scanned object 20. Because the light source assembly located at the side of the scanned object 20 far from the sensor 30 is collected by the sensor 30 as the transmitted light, and the irradiation direction of the light source assembly located at the side of the scanned object 20 far from the sensor 30 is perpendicular to the arrangement of the scanned object 20, the transmitted light with the maximum efficiency can be ensured, and meanwhile, the light source assembly located at the side of the scanned object 20 far from the sensor 30 is arranged opposite to the sensor 30, so that the transmitted light is directly emitted into the sensor 30, and the integrity of the information received by the sensor 30 is ensured.
Since the light source module located on the side of the scanned object 20 away from the sensor 30 does not block the sensor 30 from receiving light, the irradiation direction of the light source module located on the side of the scanned object 20 away from the sensor 30 is perpendicular to the scanned object 20, and does not affect the sensor 30.
As shown in fig. 1 and 2, the sensor 30 is located on one side of the scanned object 20, the sensor 30 includes a frame 31 and a lens 32, the frame 31 has an accommodating space and a light inlet communicated with the accommodating space; the lens 32 is disposed in the housing 31, and an object side surface of the lens 32 faces the light entrance to receive the information light after the light source assembly scans the object 20. The frame 31 can provide support for the lens 32, and ensure that the lens 32 can be stably accommodated in the frame 31. And the lens 32 is arranged to transmit the scanned image while imaging the image onto a subsequent structure.
As shown in fig. 2, the sensor 30 further includes a power module 33, a photoelectric conversion module 34, and a signal processing module 35, the photoelectric conversion module 34 is electrically connected to the power module 33, the photoelectric conversion module 34 is located on the image side of the lens 32, and converts information light emitted through the lens 32 into an electrical signal; the signal processing module 35 is electrically connected to the power module 33, and is configured to receive the electrical signals and separately transmit the electrical signals corresponding to each light source assembly to the image capturing structure 40. The power module 33 supplies power to the photoelectric conversion module 34 and the signal processing module 35 to ensure that the photoelectric conversion module 34 and the signal processing module 35 work stably. The photoelectric conversion module 34 is capable of receiving the light emitted from the lens 32 and converting the light signal into a continuous electrical signal. The signal processing module 35 calibrates the light emitted by the same light source assembly, and then transmits the calibrated signal to the image acquisition structure 40, the image acquisition structure 40 transmits the signal to the upper computer 50, and the upper computer 50 synthesizes the signals with the same mark to form scanning information irradiated by the corresponding light source assembly.
Specifically, the photoelectric conversion module 34 is provided on the power supply module 33. The power supply module 33 is a circuit board, and the photoelectric conversion module 34 is disposed on the power supply module 33, so that the position stability of the photoelectric conversion module 34 can be ensured, and the power supply module 33 can stably supply power to the photoelectric conversion module 34.
The digital processing unit 351, the interface 352, and the light source control unit 36 are provided on the circuit board.
As shown in fig. 2, the signal processing module 35 includes a digital processing unit 351 and an interface 352, the digital processing unit 351 is configured to receive and convert the electrical signal into a discrete signal, and calibrate the discrete signal of each light source module; the discrete signals of each light source module are transmitted to image acquisition structure 40 through different interfaces 352, respectively. The digital processing unit 351 is capable of converting the continuous electrical signal generated by the photoelectric conversion module 34 into discrete signals, and calibrating the discrete signals at the same time, wherein the discrete signals of the same light source module are calibrated with the same label, and the discrete signals of different light source modules are calibrated with different labels.
As shown in fig. 2, the sensor 30 further includes a light source control unit 36, the light source control unit 36 is electrically connected to the light source assemblies, and the light source control unit 36 controls the light emitting time of each light source assembly, so that the light source assemblies emit light in a time-sharing manner. The light source control unit 36 is configured to control the light source modules to control the light emitting time of each light source module, so that the light source modules emit light in sequence, thereby realizing time-sharing control, and by time-sharing control of light emission of the light source modules, discrete signals can be calibrated to distinguish signals corresponding to each light source module.
Optionally, the image scanning system further includes a driving assembly, the driving assembly is connected to the light source assemblies and electrically connected to the light source control unit 36, and the light source control unit 36 controls driving positions and driving powers of the driving assembly to adjust positions of the light source assemblies and angles of the light source assemblies irradiating the scanned object 20. The driving assembly is connected with the light source assembly to drive the light source assembly to move, and then the position and the irradiation angle of the light source assembly are changed. The light source control unit 36 is electrically connected to the driving assembly to control the driving power and the operating time of the driving assembly, so as to adjust the position of each light source assembly and the angle of the scanned object 20.
The image scanning system adopts a scanning method, as shown in fig. 5, the scanning method includes: step S10: a light source control unit 36 for acquiring the image scanning system, wherein the light source control unit 36 controls the multiple light source components of the image scanning system to emit light in different periods so as to sequentially and alternately illuminate and illuminate the scanned object 20 in a scanning cycle; step S20: a photoelectric conversion module 34 of the image scanning system is acquired, and the photoelectric conversion module 34 receives the information light of the time interval transmitted or reflected by the scanned object 20 and converts the information light into an electric signal; step S30: acquiring a digital processing unit 351 of the image scanning system, wherein the digital processing unit 351 receives an electric signal, converts the electric signal into a discrete signal, marks the discrete signals of different light source assemblies, and transmits the marked discrete signals to an image acquisition structure 40 of the image scanning system; step S40: the upper computer 50 of the image scanning system is obtained, and the upper computer 50 receives the marked discrete signals transmitted from the image acquisition structure 40 and synthesizes the same marked discrete signals into a scanning image to form the scanning image of each light source assembly.
In the embodiment shown in fig. 1, the light source assembly consists of three, one sensor 30, one cable 60, one image capturing structure 40 and one upper computer 50. The light source control unit 36 is electrically connected to the plurality of light source modules, and controls the plurality of light source modules to perform time-sharing light-emitting on the scanned object 20 at different angles and in different directions, the light at different angles and in different directions enters the sensor 30 in a time-sharing manner after being reflected and transmitted by the scanned object 20, and the photoelectric conversion module 34 in the sensor 30 converts the received light signals of the different light source modules into analog electrical signals in a time-sharing manner after passing through the lens 32. The digital processing unit 351 of the sensor 30 converts the continuous analog electrical signal into a discrete digital signal by analog-to-digital conversion, and calibrates the digital signals of different light source modules and adds a data flag. The image digital signal of each light source module calibrated by the digital processing unit 351 is transmitted to the image acquisition structure 40 through the specific interface 352 via the cable 70. The image acquisition structure 40 caches and pre-processes the received image digital signals, then uploads the image digital signals to the upper computer 50, and the image processing unit 51 in the upper computer 50 decomposes and synthesizes various light source data with data marks, and then performs result judgment and output.
As will be described in detail herein, the light source control unit 36 of the sensor 30 controls the plurality of light source units in a time-sharing manner as shown in fig. 3. For simplicity of description, only two line scanning periods T1, T2, T3 (first scanning period) T4, T5, and T6 (second scanning period) in the line pulse are taken out for description. The time-sharing control pulse of the first light source assembly 11 is 211_ LED _ ON, the time-sharing control pulse of the second light source assembly 12 is 212_ LED _ ON, the time-sharing control pulse of the third light source assembly 13 is 213_ LED _ ON, the time-sharing control pulses 211_ LED _ ON, 212_ LED _ ON and 213_ LED _ ON control the light source assemblies to be alternately turned ON in sequence in the row periods T1, T2, T3, T4, T5 and T6, the turning-ON time of the first light source assembly 11 in the row period T1 is T1, and the turning-ON time in the row period T4 is T4; the lighting time of the second light source assembly 12 in the T2 line period is T2, and the lighting time in the T5 line period is T5; the third light source assembly 13 is turned on for a time T3 in the T3 line period and a time T6 in the T6 line period; as shown in fig. 1, the first light source assembly 11 and the second light source assembly 12 form different angles to perform front reflection and light irradiation on the object to be detected, and the third light source assembly 13 performs opposite transmission and light irradiation on the object to be detected. Therefore, the lighting mode of different angles, different directions and different exposure brightness for the scanned object 20 is realized.
The image light signals generated by the plurality of light source units sequentially irradiated onto the object are sequentially converted into image analog signals 211_ a, 212_ a, and 213_ a by the photoelectric conversion chip 2312 as shown in fig. 3. The light signals of the first light source module 11 during time t1 are converted into image analog signals a1, the light signals of the second light source module 12 during time t2 are converted into image analog signals a2, the light signals of the third light source module 13 during time t3 are converted into image analog signals A3, the light signals of the first light source module 11 during time t4 are converted into image analog signals a4, the light signals of the second light source module 12 during time t5 are converted into image analog signals a5, and the light signals of the third light source module 13 during time t6 are converted into image analog signals A6, so that the light signals of the plurality of light source modules are time-shared and converted into image analog signals.
As shown in fig. 3, the digital processing unit 351 of the sensor 30 performs analog-to-digital conversion on the image analog signals 211_ a, 212_ a, and 213_ a of the respective light source units, converts continuous analog electrical signals into discrete digital signals, calibrates the digital signals of the different light source units, and adds data flags to generate the digital signals 211_ D, 212_ D, and 213_ D. A data flag 1 is added to the digital image signal of the first light source unit 11, a data flag 2 is added to the digital image signal of the second light source unit 12, and a data flag 3 is added to the digital image signal of the third light source unit 13. The image digital signals generated by the first light source module 11 during the illumination time at t1 and t4 are D1 and D4, respectively, and the first bit data flag of D1 and D4 is 1. The digital signals of the images generated by the second light source module 12 during the illumination time t2 and t5 are D2 and D5, respectively, and the first-bit data flags of D2 and D5 are both 2. The image digital signals generated by the third light source module 13 during the illumination time t3 and t6 are D3 and D6, respectively, and the first-bit data flag of D3 and D6 is 3. The sensor 30 transmits the multi-light source module image digital signals 211_ D, 212_ D, 213_ D generated by the digital processing unit 351 to the image capturing structure 40 through the interface 352 via the cable 70. The number of cables 70 and image capturing structures 40 is 1 each.
The image acquisition structure 40 caches and pre-processes the received multi-light-source assembly image digital signals 211_ D, 212_ D and 213_ D, and uploads the signals to the upper computer 50, and the image processing unit 51 in the upper computer 50 decomposes and synthesizes the various light source assembly data with the data marks according to the illustration in fig. 4. The data flags of D1 and D4 … … Dn in the digital image data 211_ D of the first light source module 11 are both 1, the data flags of D2 and D5 … … Dn +1 in the digital image data 212_ D of the second light source module 12 are both 2, the data flags of D3 and D6 … … Dn +2 in the digital image data 213_ D of the third light source module 13 are both 3, and the data with the data flags 1 are combined into 1 image as the image of the first light source module 11 by the upper computer 50; synthesizing the data with data flag 2 into 1 image of second light source module 12; the data with the data markers 3 are combined into 1 image of the third light source module 13. The upper computer respectively distinguishes and displays results of the whole image data generated by each light source component, so that the image scanning and distinguishing of the lighting modes with different angles, different directions and different exposure brightness for the detected object by the image scanning system for industrial detection in the embodiment is completed.
The invention overcomes the problem that a plurality of industrial cameras, a plurality of lenses, a plurality of image acquisition cards and a plurality of upper computers need to be configured when the conventional image scanning system for industrial detection scans a plurality of angles and a plurality of light source assemblies, reduces the cost and the volume of the image scanning system for industrial detection, and widens the application field of the image scanning system for industrial detection.
The sensor 30 is a contact image sensor.
The invention only solves the problem that a plurality of industrial cameras, a plurality of lenses, a plurality of image acquisition cards and a plurality of upper computers are needed when an image scanning system for industrial detection scans a plurality of light sources, and the problems that the number of interfaces, the number of acquisition cards and the number of upper computers are increased due to the increase of the scanning length of the detected object and the improvement of the scanning resolution ratio are out of the solution range of the invention.
It is to be understood that the above-described embodiments are only a few, but not all, embodiments of the present invention. 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 is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An image scanning system, comprising:
a plurality of light source assemblies having different angles with respect to an object (20) to be scanned;
a sensor (30), wherein a plurality of the light source assemblies are electrically connected with the sensor (30), and the sensor (30) controls the light emitting process of the light source assemblies;
an image acquisition structure (40), wherein the image acquisition structure (40) is connected with the sensor (30) through a cable (60), and the image acquisition structure (40) is used for receiving signals transmitted by the sensor (30);
the upper computer (50), the upper computer (50) with image acquisition structure (40) electricity is connected, upper computer (50) are used for receiving the signal that image acquisition structure (40) spread, and to each the image that the light source subassembly scanned shows.
2. The image scanning system of claim 1, wherein at least two of said plurality of light source modules are positioned on opposite sides of said scanned object (20).
3. The image scanning system of claim 2,
the irradiation direction of the light source component positioned at one side of the scanned object (20) close to the sensor (30) is obliquely arranged relative to the scanned object (20);
the irradiation direction of the light source component on the side of the scanned object (20) far away from the sensor (30) is perpendicular to the scanned object (20).
4. The image scanning system according to claim 1, wherein the sensor (30) is located on a side of the scanned object (20), the sensor (30) comprising:
the light source device comprises a frame body (31), wherein the frame body (31) is provided with an accommodating space and a light inlet communicated with the accommodating space;
and the lens (32) is arranged in the frame body (31), and the object side surface of the lens (32) faces the light inlet so as to receive the information light after the light source assembly scans the scanned object (20).
5. The image scanning system of claim 4, wherein the sensor (30) further comprises:
a power supply module (33);
a photoelectric conversion module (34), wherein the photoelectric conversion module (34) is electrically connected to the power supply module (33), the photoelectric conversion module (34) is positioned on the image side of the lens (32), and converts information light emitted through the lens (32) into an electrical signal;
the signal processing module (35), the signal processing module (35) with the power module (33) electricity is connected for receiving the electric signal and separately transmitting the electric signal that each light source subassembly corresponds to the image acquisition structure (40).
6. The image scanning system according to claim 5, characterized in that the photoelectric conversion module (34) is provided on the power supply module (33).
7. The image scanning system according to claim 5, characterized in that the signal processing module (35) comprises:
a digital processing unit (351), the digital processing unit (351) being configured to receive the electrical signal and convert the electrical signal into discrete signals, and to calibrate the discrete signals for each of the light source assemblies;
an interface (352), through which discrete signals of each light source assembly are transmitted to the image acquisition structure (40), respectively.
8. The image scanning system according to claim 5, wherein the sensor (30) further comprises a light source control unit (36), the light source control unit (36) is electrically connected with the light source modules, and the light source control unit (36) controls the light emitting time of each of the light source modules, so that the plurality of light source modules realize time-sharing light emission.
9. The image scanning system of claim 8, further comprising a driving assembly drivingly connected to the light source assemblies and electrically connected to the light source control unit (36), wherein the light source control unit (36) controls driving positions and driving powers of the driving assembly to adjust positions of the light source assemblies and angles of illumination of the scanned object (20).
10. A scanning method, wherein the image scanning system according to any one of claims 1 to 9 scans using the scanning method, the scanning method comprising:
step S10: a light source control unit (36) for acquiring the image scanning system, wherein the light source control unit (36) controls a plurality of light source components of the image scanning system to emit light in a time interval so as to sequentially and alternately light and irradiate the scanned object (20) in a scanning cycle;
step S20: acquiring a photoelectric conversion module (34) of the image scanning system, wherein the photoelectric conversion module (34) receives information light of a time interval transmitted or reflected by the scanned object (20) and converts the information light into an electric signal;
step S30: acquiring a digital processing unit (351) of the image scanning system, the digital processing unit (351) receiving the electrical signal and converting the electrical signal into discrete signals, labeling the discrete signals of different light source assemblies, transmitting the labeled discrete signals to an image acquisition structure (40) of the image scanning system;
step S40: and acquiring an upper computer (50) of the image scanning system, wherein the upper computer (50) receives the marked discrete signals transmitted by the image acquisition structure (40) and synthesizes the same marked discrete signals into a scanning image so as to form the scanning image of each light source component.
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| CN202111408936.4A CN113973159A (en) | 2021-11-24 | 2021-11-24 | Image scanning system and scanning method |
| PCT/CN2022/095049 WO2023092970A1 (en) | 2021-11-24 | 2022-05-25 | Image scanning system and scanning method |
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