Image sensing device, image scanning apparatus, and scanning method of image scanning apparatus

Abstract

The application provides an image sensing device, an image scanning device and a scanning method of the image scanning device. The image sensing device comprises an image sensing assembly for sterilizing and scanning a to-be-scanned object, and the image sensing assembly comprises a frame with a containing cavity and an opening communicating with the containing cavity; a contact image sensor for reading image information of the to-be-scanned object, the contact image sensor comprising a detection light source for emitting a detection light beam; and a sterilization module, the sterilization module and the contact image sensor being arranged in the containing cavity in sequence along a first direction, the sterilization module comprising an ultraviolet light source capable of emitting ultraviolet light to sterilize the to-be-scanned object. The technical scheme of the application solves the problem that the image sensing device in the prior art is difficult to fully sterilize the to-be-scanned object.

Description

Technical Field

[0001] The present invention relates to the field of image scanning technology, and in particular to an image sensing device, an image scanning device, and a scanning method of the image scanning device. Background Art

[0002] Contact image sensors are used to scan objects and are widely used in image reading devices such as scanners, multifunction printers, banknote readers, and receipt scanners. Banknotes, receipts, and documents can carry bacteria and viruses, which can spread during the scanning process.

[0003] To prevent the spread of viruses and bacteria carried by scanned objects, existing image reading devices typically use a probe light source to emit intermittent probe light during the scanning process to simultaneously sterilize the scanned object. This can have some sterilization effects. However, the probe light source is only illuminated for a short time, making it difficult to achieve sufficient sterilization. Summary of the Invention

[0004] The main purpose of the present invention is to provide an image sensing device, an image scanning device and a scanning method for the image scanning device, so as to solve the problem in the prior art that the image sensing device is difficult to fully sterilize the object to be scanned.

[0005] To achieve the above-mentioned objectives, according to one aspect of the present invention, an image sensing device is provided, comprising an image sensing assembly for sterilizing and scanning an object to be scanned, the image sensing assembly comprising: a frame having a receiving cavity and an opening connected to the receiving cavity; a contact image sensor for reading image information of the object to be scanned, the contact image sensor comprising a detection light source for emitting a detection light beam; a sterilization module, the sterilization module and the contact image sensor being sequentially arranged in the receiving cavity along a first direction, the sterilization module comprising an ultraviolet light source capable of emitting ultraviolet light to sterilize the object to be scanned.

[0006] Furthermore, the image sensing assembly also includes a baffle located in the accommodating cavity, which is arranged between the sterilization module and the contact image sensor to separate the accommodating cavity into a first cavity and a second cavity, wherein the sterilization module is located in the first cavity and the contact image sensor is located in the second cavity.

[0007] Furthermore, the image sensing assembly further includes a polarizer located on a side of the ultraviolet light source facing the opening, so that the ultraviolet light emitted by the ultraviolet light source is emitted in a direction away from the detection light source at a preset angle.

[0008] Furthermore, the image sensing device also includes: a position detection unit for detecting the position of the object to be scanned, and the position detection unit is provided on at least one side of the frame along the first direction; a controller, the ultraviolet light source, the contact image sensor and the position detection unit are all connected to the controller, and the controller controls the opening and closing of the ultraviolet light source and the contact image sensor according to the detection signal transmitted by the position detection unit.

[0009] Furthermore, the image sensor assembly also includes a light-transmitting plate located at the opening, and the light-transmitting plate is connected to the frame.

[0010] Furthermore, the image sensing device includes two image sensing components arranged facing each other, and the two image sensing components are respectively located on opposite sides of the object to be scanned, so as to sterilize and scan both sides of the object to be scanned simultaneously.

[0011] Furthermore, the contact image sensor also includes: a lens for converging the detection light beam reflected by the object to be scanned; a substrate connected to the frame; a photosensitive element arranged on the substrate, and the lens, the photosensitive element and the substrate are arranged in sequence in the accommodating cavity along a second direction perpendicular to the first direction. The detection light beam emitted by the detection light source is reflected by the object to be scanned and converged by the lens before being incident on the photosensitive element.

[0012] Furthermore, detection light sources are provided on two opposite sides of the lens along the first direction.

[0013] According to another aspect of the present invention, the present invention provides an image scanning device, comprising the above-mentioned image sensing device and a conveying device for conveying an object to be scanned.

[0014] Furthermore, the conveying device includes: a first conveying part, including two first rollers arranged at intervals, the interval between the two first rollers forming a first conveying channel for conveying the object to be scanned, and the rotation directions of the two first rollers are opposite; a second conveying part, including two second rollers arranged at intervals, the interval between the two second rollers forming a second conveying channel for conveying the object to be scanned and corresponding to the first conveying channel, and the rotation directions of the two second rollers are opposite, wherein the first roller and the second roller located on the same side of the object to be scanned have the same rotation direction.

[0015] According to another aspect of the present invention, the present invention provides a scanning method for an image scanning device, which uses the above-mentioned image scanning device to sterilize and scan the object to be scanned. The scanning method of the image scanning device includes: a sterilization step of sterilizing the object to be scanned through a sterilization module; and an acquisition step of acquiring image information of the object to be scanned through a contact image sensor.

[0016] Furthermore, before the sterilization step and / or after the acquisition step, the scanning method of the image scanning device further includes a detection step of detecting the position of the object to be scanned by using a position detection unit.

[0017] The application has the advantages that the sterilization module is additionally arranged on one side of the contact image sensor, and the sterilization module comprises an ultraviolet light source capable of emitting ultraviolet light. Thus, the ultraviolet light emitted by the ultraviolet light source can directly and continuously sterilize the object to be scanned before or after the contact image sensor scans the object to be scanned, so that the object to be scanned can be more fully sterilized. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings constituting a part of the specification of the application are used to provide further understanding of the application, and the illustrative embodiments of the application and the description thereof are used to explain the application, and do not constitute an improper limitation on the application. In the drawings:

[0019] Figure 1 Fig. 1 shows a structure schematic diagram of an embodiment one of the image scanning device of the application;

[0020] Figure 2 Fig. 2 shows a structure schematic diagram of an embodiment two of the image scanning device of the application;

[0021] Figure 3 Fig. 3 shows a structure schematic diagram of an embodiment three of the image scanning device of the application;

[0022] Figure 4 Fig. 4 shows a flow chart of the image scanning method of the embodiment of the application;

[0023] Figure 5 Fig. 5 shows a working timing diagram of the image scanning device when the object to be scanned enters the sterilization area of the embodiment of the application; and

[0024] Figure 6 Fig. 6 shows a working timing diagram of the image scanning device when the object to be scanned leaves the scanning area of the embodiment of the application.

[0025] Among the above drawings, the following reference signs are included:

[0026] 11, contact image sensor; 111, detection light source; 112, lens; 113, photosensitive member; 12, sterilization module; 13, baffle; 14, frame; 15, light-transmitting plate; 16, position detection part; 17, first roller; 18, second roller; 19, object to be scanned; 20, ultraviolet light source; 22, polarizing member. DETAILED DESCRIPTION

[0027] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0028] It should be noted that, compared with the intermittent sterilization of the to-be-scanned object by the detection light beam during scanning of the image sensing device of the prior art, the image sensing device of the embodiment of the present application is additionally provided with a sterilization module, and the ultraviolet light emitted by the ultraviolet light source of the sterilization module can directly and continuously irradiate the to-be-scanned object and sterilize it, so that the to-be-scanned object can be fully sterilized.

[0029] It should be noted that, in the embodiment of the present application, the detection light source for scanning of the contact image sensor in the prior art generally uses UVA ultraviolet light, which has low intensity and low sterilization effect.

[0030] It should be noted that, in the embodiment of the present application, taking a contact image sensor with a resolution of 300DPI (dots per inch) as an example, the step distance of each row is 0.08 mm, and the length of the banknote is about 156 mm. During the sterilization of the to-be-scanned object by the ultraviolet light in the UVC wave band, since the ultraviolet light irradiates every corner of the surface of the to-be-scanned object, the area covered by the ultraviolet light is about 0.08*156 = 12.5 mm 2 = 0.125 cm 2 .

[0031] Therefore, according to the power of the LED array of the UVC ultraviolet light, the area covered by the ultraviolet light, and the time required for scanning one step, the irradiation dose of the ultraviolet light of the image sensing device of the embodiment of the present application can be calculated. According to the relevant information consulted by the inventor, the irradiation dose of the ultraviolet light should reach 10000 uws / cm 2 when killing general bacterial propagules, 100000 uws / cm 2 when killing bacterial spores, the resistance of viruses to ultraviolet light is between that of bacterial propagules and spores, and the resistance of fungal spores is stronger than that of bacterial spores, and the irradiation dose of the ultraviolet light should reach 600000 uws / cm 2 Therefore, by comparing the irradiation dose of the ultraviolet light of the image sensing device of the embodiment of the present application with the above parameters, the sterilization effect achieved by the embodiment of the present application can be obtained. According to the shortest time required for scanning one step of the contact image sensor, the speed of the to-be-scanned object moving along the first direction, i.e. the time of the to-be-scanned object passing through the image sensing device, can be determined. Further, the greater the power of the LED array of the UVC ultraviolet light, the better the sterilization effect, so that the speed of the to-be-scanned object moving along the first direction can also be increased.

[0032] It should be noted that, in the embodiment of the present application, UVC ultraviolet light refers to short-wave ultraviolet light with a wavelength of 200 nm-280 nm in ultraviolet light.

[0033] It should be noted that in this embodiment of the present invention, the sterilization module 12 and the contact image sensor 11 are controlled separately and operate independently without interfering with each other. In situations where image scanning is not required, only the object to be scanned can be sterilized; in situations where sterilization is not required, only scanning can be performed. This improves the flexibility and convenience of the image sensor device.

[0034] Example 1

[0035] like Figure 1 As shown, a first embodiment of the present invention provides an image sensing device. The image sensing device includes an image sensing assembly for sterilizing and scanning an object 19 to be scanned. The image sensing assembly comprises a frame 14, a contact image sensor 11, and a sterilization module 12. The frame 14 has a receiving cavity and an opening communicating with the receiving cavity. The contact image sensor 11 is used to read image information of the object 19 to be scanned and includes a detection light source 111 for emitting a detection light beam. The sterilization module 12 and the contact image sensor 11 are sequentially arranged within the receiving cavity along a first direction. The sterilization module 12 includes an ultraviolet light source 20 capable of emitting ultraviolet light to sterilize the object 19 to be scanned.

[0036] In the above technical solution, a separate sterilization module 12 is additionally provided on one side of the contact image sensor 11, and the sterilization module 12 includes an ultraviolet light source 20 capable of emitting ultraviolet light. In this way, before the contact image sensor 11 scans the object 19 to be scanned, or after the contact image sensor 11 scans the object 19 to be scanned, the ultraviolet light emitted by the ultraviolet light source 20 can be used to directly and continuously sterilize the object 19 to be scanned, thereby more fully sterilizing the object 19 to be scanned and improving the sterilization effect.

[0037] Preferably, in the first embodiment of the present invention, the object to be scanned is along Figure 1 The image sensing device first sterilizes the object 19 to be scanned using the ultraviolet light source 20, and then scans the object 19 using the contact image sensor 11. Of course, in an alternative embodiment not shown in the drawings, the object to be scanned can be moved along the first direction of the image sensing device. Figure 1 The first direction in the image sensor 11 moves from right to left, so that the object to be scanned 19 can be scanned by the contact image sensor 11, and then the object to be scanned 19 can be sterilized by the ultraviolet light source 20.

[0038] Preferably, in the first embodiment of the present invention, the ultraviolet light source uses UVC light to irradiate the object to be scanned to achieve a sterilization function.

[0039] Specifically, in the first embodiment of the present application, the ultraviolet light source is always on, instead of being pulsed on during the scanning of each row of the object to be scanned by the contact image sensor, so that the illumination time of the ultraviolet light source is greatly increased, and the sterilization effect is sufficient, and the scanning speed can be maximized while ensuring the sterilization effect.

[0040] As shown in Figure 1 In the first embodiment of the present application, the image sensing assembly further comprises a baffle 13 located in the accommodating cavity, the baffle 13 is arranged between the sterilization module 12 and the contact image sensor 11 to divide the accommodating cavity into a first cavity and a second cavity, wherein the sterilization module 12 is located in the first cavity, and the contact image sensor 11 is located in the second cavity.

[0041] Through the above arrangement, the baffle 13 arranged in the accommodating cavity can separate the ultraviolet light emitted by the sterilization module 12 and the probe light beam emitted by the contact image sensor 11, so as to avoid the ultraviolet light interfering with the scanning of the probe light beam on the object to be scanned, and avoid the image quality output by the contact image sensor from being reduced.

[0042] As shown in Figure 1 In the first embodiment of the present application, the image sensing device further comprises a position detection part 16 and a controller. The position detection part 16 is used to detect the position of the object to be scanned 19, and at least one side of the frame 14 along the first direction is provided with the position detection part 16; the ultraviolet light source 20, the contact image sensor 11 and the position detection part 16 are all connected with the controller, and the controller controls the opening and closing of the ultraviolet light source 20 and the contact image sensor 11 according to the detection signal transmitted by the position detection part 16.

[0043] Through the above arrangement, when the object to be scanned 19 moves along the first direction until the position detection part 16 detects that the object to be scanned 19 enters the sterilization area of the sterilization module 12, the position detection part 16 sends a detection signal to the controller, and the controller controls the opening and closing of the ultraviolet light source 20 and the contact image sensor 11, so that the ultraviolet light source 20 and the contact image sensor 11 sterilize and scan the object to be scanned 19 in turn.

[0044] Specifically, as shown in Figure 1 In the first embodiment of the present application, the number of position detection parts 16 is two, and the two position detection parts 16 are respectively located on the opposite sides of the frame 14 along the first direction. Figure 1When the left middle position detection part 16 detects that the to-be-scanned object enters the sterilization area (a range that can be irradiated by the sterilization module 12), the ultraviolet light source 20 of the sterilization module 12 is turned on to sterilize the to-be-scanned object 19; when the to-be-scanned object 19 continues to move to the reading area (a scanning area) of the contact image sensor 11, the contact image sensor 11 is turned on to scan and read the image of the to-be-scanned object 19; then, as the to-be-scanned object 19 further moves along the first direction, when Figure 1 When the right middle position detection part 16 detects that the to-be-scanned object 19 leaves the sterilization area, the ultraviolet light source 20 of the sterilization module 12 is turned off, that is, the sterilization of the to-be-scanned object 19 is completed; when the to-be-scanned object 19 continues to move along the first direction until leaving the reading area of the contact image sensor 11, the contact image sensor 11 is turned off to complete the image reading of the to-be-scanned object 19. In this way, on the one hand, sufficient sterilization time can be ensured to achieve sufficient sterilization of the to-be-scanned object 19, and on the other hand, the ultraviolet light source can be effectively utilized to reduce the time of invalid light emission, so that the temperature of the ultraviolet light source 20 can be reduced, and the service life of the ultraviolet light source 20 can be improved.

[0045] As shown in FIG. 1, the embodiment of the present application further comprises a frame 14, which is connected with the contact image sensor 11 and the sterilization module 12. Figure 1 As shown in FIG. 1, the embodiment of the present application further comprises a frame 14, which is connected with the contact image sensor 11 and the sterilization module 12.

[0046] Through the above arrangement, the light-transmitting plate 15 and the frame 14 can enclose the sterilization module 12 and the contact image sensor 11 in the accommodating cavity, so that dust can be prevented from entering the accommodating cavity, and the working of the sterilization module 12 and the contact image sensor 11 can be prevented from being affected by the external environment.

[0047] As shown in FIG. 1, the embodiment of the present application further comprises a frame 14, which is connected with the contact image sensor 11 and the sterilization module 12. Figure 1 As shown in FIG. 1, the embodiment of the present application further comprises a frame 14, which is connected with the contact image sensor 11 and the sterilization module 12.

[0048] In the above technical solution, the detection light beam emitted by the detection light source 111 is irradiated onto the to-be-scanned object 19 and is reflected by the to-be-scanned object 19 to enter the lens 112, the lens 112 converges the reflected light to irradiate onto the photosensitive element 113, and then the photosensitive element 113 converts the received light signal into an electric signal, so that the contact image sensor 11 realizes the image reading function.

[0049] Preferably, in the embodiment one of the present application, the probe light beams emitted by the probe light sources 111 can be visible light (RGB) or invisible light (IR) or ultraviolet light (UVA) or a combination thereof.

[0050] As shown in the embodiment one of the present application, the lens 112 is provided with the probe light sources 111 on both sides along the first direction. Figure 1

[0051] Through the above arrangement, the probe light beams emitted by the probe light sources 111 on both sides can scan the object 19 to be scanned, so that the scanning range is more comprehensive, and the intensity of the probe light beams can be improved, thereby improving the image quality of the scanned image.

[0052] As shown in the embodiment one of the present application, the lens 112 is provided with the probe light sources 111 on both sides along the first direction. Figure 1

[0053] Through the above arrangement, the probe light beams emitted by the probe light sources 111 on both sides can scan the object 19 to be scanned, so that the scanning range is more comprehensive, and the intensity of the probe light beams can be improved, thereby improving the image quality of the scanned image.

[0054] As shown in the embodiment one of the present application, the lens 112 is provided with the probe light sources 111 on both sides along the first direction. Figure 1 The above technical solution, the two first rollers 17 of the first conveying part can move the object 19 to be scanned along the first direction to the sterilization area, so that the sterilization module 12 can sterilize the object 19 to be scanned, and then the two first rollers 17 continue to convey the object 19 to be scanned to enter the scanning area, so that the contact image sensor 11 can scan the object 19 to be scanned; the two second rollers 18 of the second conveying part can move the object 19 to be scanned along the first direction and leave the sterilization area and the scanning area. By arranging the first conveying part and the second conveying part, the object 19 to be scanned can move along the first direction more smoothly.

[0055]

[0056] ​​​Of course, in an alternative embodiment not shown in the drawings, the conveying device comprises a first conveying part and a second conveying part. The first conveying part comprises a first roller 17 located at one side of the object 19 to be scanned, and the second conveying part comprises a second roller 18. The first roller 17 and the second roller 18 are located at the same side of the object 19 to be scanned, have the same rotating direction, and are located at opposite sides of the image sensing assembly along the moving direction of the object 19 to be scanned. In this way, the object 19 to be scanned can also be moved in the first direction.

[0057] Embodiment Two

[0058] As shown in Figure 2 Embodiment Two of the present application differs from Embodiment One in that no baffle 13 is provided in Embodiment Two, but a polarizing member 22 is provided. Specifically, in order to avoid the ultraviolet light emitted by the ultraviolet light source 20 from interfering with the detection light beam emitted by the contact image sensor, the image sensing assembly is provided with the polarizing member 22 located at the side of the ultraviolet light source 20 facing the opening, so that the ultraviolet light emitted by the ultraviolet light source 20 is emitted at a preset angle in a direction away from the detection light source 111.

[0059] Through the above arrangement, part of the ultraviolet light emitted by the ultraviolet light source 20 can pass through the polarizing member 22 and vibrate in a direction away from the detection light source 111, and then enter the object 19 to be scanned. Another part of the ultraviolet light emitted by the ultraviolet light source 20 is absorbed or reflected by the polarizing member 22. In this way, not only can the ultraviolet light be prevented from interfering with the detection light beam of the contact image sensor 11, but also the object 19 to be scanned can be sterilized.

[0060] Preferably, in Embodiment Two of the present application, the polarizing member 22 is located above the ultraviolet light source 20, so that all the ultraviolet light emitted by the ultraviolet light source 20 can first pass through the polarizing member 22 and then be emitted to the object 19 to be scanned.

[0061] Preferably, in Embodiment Two of the present application, the polarizing member 22 is a polarizing sheet. The main function of the polarizing sheet is to change the natural light passing through the polarizing sheet into polarized light, i.e. the polarizing sheet can allow light vibrating in a specific direction to pass through. In this way, the type of polarizing sheet can be selected according to the required emission angle of the ultraviolet light.

[0062] The other structures of the image scanning device in Embodiment Two of the present application are the same as those in Embodiment One, and will not be described here again.

[0063] Of course, in an alternative embodiment not shown in the accompanying drawings, a polarizer 22 can also be provided on the basis of the structure of the first embodiment (that is, the image sensing device includes both the polarizer 22 and the baffle 13), and the polarizer 22 is located on the side of the ultraviolet light source 20 facing the opening. In this way, the polarizer 22 can allow the ultraviolet light vibrating in a direction away from the detection light source 111 to pass through, and the baffle 13 can separate the ultraviolet light emitted by the sterilization module 12 and the detection light beam emitted by the contact image sensor 11, thereby further preventing the ultraviolet light from interfering with the detection light beam scanning the object to be scanned.

[0064] Example 3

[0065] like Figure 3 As shown, the difference between Example 3 of the present invention and Example 1 is that, in Example 3, the image sensing device of the image scanning equipment includes two image sensing components arranged opposite to each other, and the two image sensing components are respectively located on opposite sides of the object to be scanned 19, so as to sterilize and scan both sides of the object to be scanned 19 at the same time.

[0066] Through the above arrangement, a channel is formed between the two image sensing components. When the object to be scanned 19 passes through the channel along the first direction under the drive of the conveying device, the image sensing components on both sides can simultaneously scan and sterilize the front and back sides of the object to be scanned 19, thereby improving the working efficiency of the image scanning equipment.

[0067] The other structures of the image scanning device in the third embodiment of the present invention are the same as those in the first embodiment and will not be described again here.

[0068] like Figure 4 As shown, an embodiment of the present invention further provides a scanning method for an image scanning device. The scanning method utilizes the aforementioned image scanning device to sterilize and scan an object to be scanned. The scanning method includes a sterilization step of sterilizing the object to be scanned 19 by a sterilization module 12 and an acquisition step of acquiring image information of the object to be scanned 19 by a contact image sensor 11.

[0069] In the above technical solution, the object to be scanned 19 is first sterilized by the sterilization module 12, and then the image information of the object to be scanned 19 is obtained by the contact image sensor 11. In this way, the object to be scanned can be sterilized while the contact image sensor 11 is used to read the information of the object to be scanned.

[0070] like Figure 4 As shown, in the embodiment of the present invention, before the sterilization step and / or after the acquisition step, the scanning method of the image scanning device further includes a detection step of detecting the position of the object 19 to be scanned by using the position detection unit 16 .

[0071] By the above arrangement, the position of the object 19 to be scanned can be detected by the position detecting part 16, and when the object 19 to be scanned moves along the first direction to the sterilization area of the sterilization module 12, or when the object 19 to be scanned moves along the first direction away from the scanning area of the contact image sensor 11, the position detecting part 16 sends the detected signal to the controller, and the controller controls the opening and closing of the ultraviolet light source 20 and the contact image sensor 11, so that the ultraviolet light source 20 and the contact image sensor 11 sterilize and scan the object 19 to be scanned in turn.

[0072] As shown in Figure 1 and Figure 5 , in the embodiment of the present application, when the leading edge of the object 19 to be scanned passes directly above the left position detecting part 16 in the Figure 1 , that is, the object 19 to be scanned enters the sterilization area, the output signal of the position detecting part 16 changes from low level to high level, at this time the ultraviolet light source 20 of the sterilization module 12 changes from low level to high level, the ultraviolet light source 20 is turned on and enters the disinfection mode; when the leading edge of the object 19 to be scanned passes the first preset time t1 after passing the left position detecting part 16 in the Figure 1 , the object 19 to be scanned enters the scanning area of the contact image sensor 11, the signal of the contact image sensor 11 changes to high level, the contact image sensor 11 turns on the image reading function and scans the object.

[0073] It should be noted that in the embodiment of the present application, the first preset time t1 is the ratio of the length of the sterilization area along the first direction to the speed of the object to be scanned moving along the first direction.

[0074] As shown in Figure 1 and Figure 6 , in the embodiment of the present application, when the leading edge of the object 19 to be scanned passes directly above the right position detecting part 16 in the Figure 1 , that is, the object 19 to be scanned starts to leave the scanning area, the output signal of the above-mentioned position detecting part 16 changes from low level to high level, the signal of the ultraviolet light source 20 of the sterilization module 12 changes to low level after the second preset time t2, at this time the object 19 to be scanned leaves the irradiation range of the ultraviolet light source 20 (i.e. the sterilization area), the ultraviolet light source 20 is turned off, the sterilization module 12 stops sterilization, and the signal of the contact image sensor 11 changes to low level after the third preset time t3, at this time the object 19 to be scanned leaves the reading range of the contact image sensor 11 (i.e. the scanning area), the contact image sensor 11 stops the image reading function and completes the image reading of the object.

[0075] It should be noted that, in an embodiment of the present invention, the second preset time t2 refers to the difference between the length of the object to be scanned along the first direction and the length of the scanning area along the first direction divided by the speed at which the object to be scanned moves along the first direction; the third preset time t3 refers to the ratio of the length of the object to be scanned 19 along the first direction to the speed at which the object to be scanned moves along the first direction.

[0076] From the above description, it can be seen that the above-mentioned embodiment of the present invention achieves the following technical effects: by additionally providing a sterilization module on one side of the contact image sensor, and the sterilization module includes an ultraviolet light source capable of emitting ultraviolet light, so that before the contact image sensor scans the object to be scanned, the ultraviolet light emitted by the ultraviolet light source can be used to directly and continuously sterilize the object to be scanned, thereby more fully sterilizing the object to be scanned.

[0077] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An image sensing device, characterized in that: An image sensing component for sterilizing and scanning an object to be scanned (19) is included, the image sensing component comprising: A frame (14) having a receiving cavity and an opening communicating with the receiving cavity; A contact image sensor (11) for reading image information of an object to be scanned (19), wherein the contact image sensor (11) comprises a detection light source (111) for emitting a detection light beam; A sterilization module (12), wherein the sterilization module (12) and the contact image sensor (11) are sequentially arranged in the accommodating cavity along a first direction, and the sterilization module (12) includes an ultraviolet light source (20) capable of emitting ultraviolet light to sterilize the object to be scanned (19); The image sensing assembly further comprises a baffle (13) located in the accommodating cavity, wherein the baffle (13) is arranged between the sterilization module (12) and the contact image sensor (11) to separate the accommodating cavity into a first cavity and a second cavity, wherein the sterilization module (12) is located in the first cavity and the contact image sensor (11) is located in the second cavity; The image sensing assembly further comprises a polarizing element (22) located on a side of the ultraviolet light source (20) facing the opening, so as to cause the ultraviolet light emitted by the ultraviolet light source (20) to be emitted in a direction away from the detection light source (111) at a preset angle; The image sensing device further comprises: A position detection unit (16) for detecting the position of the object to be scanned (19), wherein the position detection unit (16) is provided on at least one side of the frame (14) along the first direction; A controller, wherein the ultraviolet light source (20), the contact image sensor (11) and the position detection unit (16) are all connected to the controller, and the controller controls the opening and closing of the ultraviolet light source (20) and the contact image sensor (11) according to a detection signal transmitted by the position detection unit (16); There are two position detection parts (16), and the two position detection parts (16) are respectively located on two opposite sides of the frame (14) along the first direction; When the front edge of the object to be scanned (19) passes above the position detection unit (16) on the left, the output signal of the position detection unit (16) on the left changes from a low level to a high level. At this time, the ultraviolet light source (20) of the sterilization module (12) changes from a low level to a high level, and the ultraviolet light source (20) is turned on and enters the disinfection mode; when the front edge of the object to be scanned (19) passes through the position detection unit (16) on the left at a first preset time t1, the object to be scanned (19) enters the scanning area of ​​the contact image sensor (11), the signal of the contact image sensor (11) changes to a high level, and the contact image sensor (11) starts the image reading function to scan the object to be scanned; When the front edge of the object to be scanned (19) passes directly above the position detection unit (16) on the right, the output signal of the position detection unit (16) on the right changes from a low level to a high level, and the signal of the ultraviolet light source (20) of the sterilization module (12) changes to a low level after a second preset time t2. At this time, the object to be scanned (19) leaves the irradiation range of the ultraviolet light source (20), the ultraviolet light source (20) is turned off, and the sterilization module (12) stops sterilizing. The signal of the contact image sensor (11) changes to a low level after a third preset time t3. At this time, the object to be scanned (19) leaves the reading range of the contact image sensor (11), and the contact image sensor (11) stops the image reading function, completing the image reading of the object to be scanned; The first preset time t1 is the ratio of the length of the sterilization area along the first direction to the speed at which the object to be scanned moves along the first direction; the second preset time t2 is the difference between the length of the object to be scanned along the first direction and the length of the scanning area along the first direction divided by the speed at which the object to be scanned moves along the first direction; and the third preset time t3 is the ratio of the length of the object to be scanned (19) along the first direction to the speed at which the object to be scanned moves along the first direction.

2. The image sensing device according to claim 1, wherein: The image sensing assembly further comprises a light-transmitting plate (15) located at the opening, and the light-transmitting plate (15) is connected to the frame (14).

3. The image sensing device according to claim 1, wherein: The image sensing device comprises two image sensing components arranged facing each other, and the two image sensing components are respectively located on opposite sides of the object to be scanned (19), so as to sterilize and scan both sides of the object to be scanned (19) at the same time.

4. The image sensing device according to claim 1, wherein: The contact image sensor (11) further includes: A lens (112) for converging the detection light beam reflected by the object to be scanned (19); a base plate connected to the frame (14); A photosensitive element (113) is provided on the substrate, and the lens (112), the photosensitive element (113) and the substrate are sequentially arranged in the accommodating cavity along a second direction perpendicular to the first direction. The detection light beam emitted by the detection light source (111) is reflected by the object to be scanned (19) and converged by the lens (112) before being emitted into the photosensitive element (113).

5. The image sensing device according to claim 4, wherein: The detection light sources (111) are provided on opposite sides of the lens (112) along the first direction.

6. An image scanning device, characterized in that: The invention comprises the image sensing device according to any one of claims 1 to 5 and a conveying device for conveying the object to be scanned (19).

7. The image scanning device according to claim 6, wherein: The conveying device comprises: A first conveying portion comprises two first rollers (17) arranged at an interval, wherein the interval between the two first rollers (17) forms a first conveying channel for conveying the object to be scanned (19), and the two first rollers (17) rotate in opposite directions; The second conveying portion includes two second rollers (18) arranged at an interval, wherein the interval between the two second rollers (18) forms a second conveying channel for conveying the object to be scanned (19) and corresponding to the first conveying channel, and the two second rollers (18) rotate in opposite directions, wherein the first roller (17) and the second roller (18) located on the same side of the object to be scanned (19) rotate in the same direction.

8. A scanning method for an image scanning device, characterized in that: The scanning method of the image scanning device utilizes the image scanning device according to claim 6 or 7 to sterilize and scan the object to be scanned, and the scanning method of the image scanning device comprises: A sterilization step of sterilizing the object to be scanned (19) by the sterilization module (12); The step of acquiring image information of the object to be scanned (19) by using a contact image sensor (11).

9. The scanning method of the image scanning device according to claim 8, characterized in that: Before the sterilization step and / or after the acquisition step, the scanning method of the image scanning device further includes a detection step of detecting the position of the object to be scanned (19) using a position detection unit (16).

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