Seat sensing system
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2026-08-14
Smart Images
Figure 0007905395000001 
Figure 0007905395000002 
Figure 0007905395000003
Abstract
Description
Technical Field
[0001] The present disclosure relates to a sensing system, and in particular to a sheet sensing system.
Background Art
[0002] Many paper-related electronic devices, such as scanners, copiers, printers, and multifunction devices, need to sense the size and boundaries of paper.
[0003] FIG. 1 is a simplified side view of a paper sensing method of a first related art. As shown in FIG. 1, a paper 40 is disposed on a glass 50, and a plurality (for example, eight) of reflective infrared sensors (for example, a first reflective infrared sensor 60 and a second reflective infrared sensor 62) are fixedly provided at some specific positions below the glass 50. The reflective infrared sensor transmits an infrared ray 64 toward the glass 50 and receives the reflected infrared ray 64. Here, the infrared ray 64 transmitted from the first reflective infrared sensor 60 passes through the glass 50 and is reflected by the paper 40, while the infrared ray 64 transmitted from the second reflective infrared sensor 62 passes through the glass 50 without being reflected by any shielding object.
[0004] The first reflective infrared sensor 60 receives the infrared ray 64 reflected by the paper 40, while the second reflective infrared sensor 62 does not receive the infrared ray 64 reflected by the paper 40. Then, a conversion circuit (not shown in FIG. 1) connected to the plurality of reflective infrared sensors can convert the plurality of infrared energies into voltages, and by referring to a table based on the voltage change, the size and boundaries of the paper 40 can be determined.
[0005] The paper sensing method of the first related technology has several drawbacks. Firstly, the cost increases due to the use of numerous reflective infrared sensors. Secondly, electronic devices require more space to accommodate multiple reflective infrared sensors. Thirdly, infrared rays 64 may be absorbed rather than reflected by the material and color of the paper 40, potentially leading to misjudgments. Fourthly, since the multiple reflective infrared sensors are fixed in several specific positions, and to avoid the space required for the movement of the contact image sensor (commonly called CIS) scanning circuit (not shown in Figure 1) of the related technology, the multiple reflective infrared sensors require a long focal length (50mm to 70mm) to sense whether the paper 40 is present or not, but the longer the focal length, the higher the price, thus increasing the cost of the reflective infrared sensors. Fifthly, since multi-stage cut judgment is made by referring to a table, if the paper size is not the size specified in the table, a misjudgment may occur, and additional software resources are required to sense the results.
[0006] Figure 2 is a simplified top view (1) of the paper sensing method of the second related technology. As shown in Figure 2, the first reflective infrared sensor 60 and the second reflective infrared sensor 62, which are located below the glass 50, are connected to the contact-type image sensor scanning circuit 66 of the related technology, which is also located below the glass 50. Next, Figure 3 is a simplified top view (2) of the paper sensing method of the second related technology. As shown in Figure 3, when the top cover of the electronic device (not shown in Figure 3) is open, the contact-type image sensor scanning circuit 66 of the related technology moves from the left side of the glass 50 to the right side of the glass 50.
[0007] Next, Figure 4 is a simplified top view (3) of the paper sensing method of the second related technology. As shown in Figure 4, the paper 40 is placed on the glass 50. When the top cover is closed, the contact-type image sensor scanning circuit 66 of the related technology moves from the right side to the left side of the glass 50 until the first reflective infrared sensor 60 detects the right edge of the paper 40 using the paper sensing method of the first related technology.
[0008] Finally, Figure 5 is a simplified top view (4) of the paper sensing method of the second related technology. As shown in Figure 5, the contact-type image sensor scanning circuit 66 of the related technology scans from the right edge of the paper 40 to the left side of the paper 40. After scanning is complete, the contact-type image sensor scanning circuit 66 of the related technology stops on the left side of the glass 50.
[0009] The paper sensing method of the second related technology determines the length of the paper 40 by the distance traveled by the contact-type image sensor scanning circuit 66 of the related technology from the right edge of the glass 50 to the right edge of the paper 40. If it is determined that the two pieces of paper 40 are the same length, the different widths of the different pieces of paper 40 can be further determined by the signal supplied by the second reflective infrared sensor 62. By referring to the table, for example, the sizes of 14 types of paper 40 can be obtained. Here, the comparison conditions in the comparison table may include the travel distance, the signal supplied by the first reflective infrared sensor 60, and the signal supplied by the second reflective infrared sensor 62.
[0010] The paper sensing method of the second related technology reduces the number of reflective infrared sensors, but still has several drawbacks. Firstly, misjudgments caused by the absorption of infrared light by the paper 40 remain unresolved. Secondly, because multi-stage cut decisions are still made by referring to a table, there is still a possibility of misjudgment, and additional software resources are required to sense the results. Thirdly, the contact image sensor scanning circuit 66 of the related technology is very time-consuming and power-hungry overall because it has to scan the paper 40 by moving from the left side of the glass 50 to the right side of the glass 50, then from the right side of the glass 50 to the right edge of the paper 40 (indicating that the paper 40 has been sensed), and finally from the right edge of the paper 40 to the left edge of the paper 40. [Overview of the project]
[0011] To solve the above problems, the purpose of this disclosure is to provide a seat sensing system.
[0012] To achieve the above-mentioned objectives of this disclosure, the sheet sensing system of this disclosure is used in a sheet and a transparent carrier plate, wherein the sheet is placed on the transparent carrier plate. The sheet sensing system includes a microcontroller, an infrared transmitter electrically connected to the microcontroller, and an infrared receiver electrically connected to the microcontroller, wherein the sheet and the transparent carrier plate are provided between the infrared transmitter and the infrared receiver, and the microcontroller controls the infrared transmitter to transmit infrared rays toward the sheet and the transparent carrier plate, and the infrared receiver determines the boundary of the sheet by receiving the infrared rays that have passed through the transparent carrier plate.
[0013] The effects of this disclosure are as follows: Firstly, it is possible to avoid misjudging the size and boundaries of the sheet due to the material and color of the sheet. Secondly, the overall scanning time and power consumption are reduced by reducing the travel distance of the infrared receiver. Thirdly, the number of infrared sensors can be reduced.
[0014] To further understand the technology, methods, and effects of this disclosure and to achieve the intended purposes of this disclosure, please refer to the following detailed description and drawings. This will also allow for a deeper and more specific understanding of the purposes, characteristics, and features of this disclosure. However, the drawings are provided for reference and illustrative purposes only and are not intended to limit the scope of this disclosure. [Brief explanation of the drawing]
[0015] [Figure 1] This is a simplified side view of the paper sensing method of the first related technology. [Figure 2] This is a simplified top view (1) of the paper sensing method, which is related to the second technology. [Figure 3] This is a simplified top view (2) of the paper sensing method, which is related to the second technology. [Figure 4] This is a simplified top view (3) of the paper sensing method, which is the second related technology. [Figure 5] This is a simplified top view (4) of the paper sensing method, which is the second related technology. [Figure 6] This is a block diagram of a first embodiment of the sheet sensing system of the present disclosure. [Figure 7] This is a simplified top view (1) of the application of the first embodiment of the sheet sensing system of the present disclosure. [Figure 8] This is a simplified side view relating to the first cut line in Figure 7 of this disclosure. [Figure 9] This is a simplified side view relating to the second cut line in Figure 7 of this disclosure. [Figure 10] This is a simplified top view (2) of the application of the first embodiment of the sheet sensing system of the present disclosure. [Figure 11]It is a simplified side view of the third cut line in FIG. 10 of the present disclosure. [Figure 12] It is a simplified top view (3) of the application of the first embodiment of the seat sensing system of the present disclosure. [Figure 13] It is a block diagram of the second embodiment of the seat sensing system of the present disclosure. [Figure 14] It is a simplified top view (1) of the application of the second embodiment of the seat sensing system of the present disclosure. [Figure 15] It is a simplified side view of the fourth cut line in FIG. 14 of the present disclosure. [[ID=!4]] [Figure 16] It is a simplified top view (2) of the application of the second embodiment of the seat sensing system of the present disclosure. [Figure 17] It is a simplified side view of the fourth cut line in FIG. 16 of the present disclosure. [Figure 18] It is a simplified top view (3) of the application of the second embodiment of the seat sensing system of the present disclosure. [Figure 19] It is a block diagram of the third embodiment of the seat sensing system of the present disclosure. [Figure 20] It is a simplified top view (1) of the application of the third embodiment of the seat sensing system of the present disclosure. [Figure 21] It is a simplified side view of the fifth cut line in FIG. 20 of the present disclosure. [Figure 22] It is a simplified side view of the sixth cut line in FIG. 20 of the present disclosure. [Figure 23] It is a simplified top view (2) of the application of the third embodiment of the seat sensing system of the present disclosure. [Figure 24] It is a simplified side view of the sixth cut line in FIG. 3 of the present disclosure. [Figure 25] It is a simplified top view (3) of the application of the third embodiment of the seat sensing system of the present disclosure. [Figure 26] It is a simplified side view of the seventh cut line in FIG. 25 of the present disclosure. [Figure 27]This is a simplified top view (4) of the application of the third embodiment of the sheet sensing system of the present disclosure. [Figure 28] This is a simplified schematic diagram of an embodiment of the light guide member and receiving region of the present disclosure. [Figure 29] This is a simplified schematic diagram illustrating the application from Figure 28 to Figure 10 in this disclosure. [Figure 30] This is a simplified schematic diagram illustrating the application from Figure 28 to Figure 16 in this disclosure. [Figure 31] This is a simplified schematic diagram of another embodiment of the light guide member and receiving region of the present disclosure. [Figure 32] This is a simplified schematic diagram of a further embodiment of the light guide member and receiving region of the present disclosure. [Figure 33] This is a schematic diagram of diffuse infrared radiation in this disclosure. [Figure 34] This is a schematic diagram of the direct infrared radiation of the present disclosure. [Modes for carrying out the invention]
[0016] This disclosure provides several specific details in order to provide a full understanding of the embodiments of this disclosure. However, those skilled in the art will understand that this disclosure can be implemented without one or more of these specific details. In other cases, well-known details are omitted so as not to obscure the features of this disclosure. The technical content and detailed description of this disclosure are as follows, and will be described with reference to the drawings. None of the following simplified top views of this disclosure show the infrared transmitter 104, infrared 108, top cover 110 and infrared transmitter 112, and the same elements and reference numerals have the same or similar functions in different drawings.
[0017] Figure 6 is a block diagram of a first embodiment of the sheet sensing system 10 of the present disclosure. The sheet sensing system 10 of the present disclosure includes a microcontroller 102, an infrared transmitter 104, and an infrared receiver 106. The infrared transmitter 104 includes a plurality of infrared transmitters 112. The infrared receiver 106 includes a contact image sensor (commonly called CIS) scanning circuit 116. The contact image sensor scanning circuit 116 includes a plurality of optical sensors 118 and a plurality of optical transmitters 124.
[0018] The microcontroller 102 is electrically connected to the infrared transmitter 104, the infrared receiver 106, the plurality of infrared transmitters 112, the contact-type image sensor scanning circuit 116, the plurality of optical sensors 118, and the plurality of optical transmitters 124. The sheet sensing system 10 may be, for example, a scanner, copier, printer, or multifunction device, but is not limited to these. The optical transmitters 124 may be, for example, color (including, for example, red, green, and blue) light-emitting diodes, but is not limited to these.
[0019] Figure 7 is a simplified top view (1) of the application of the first embodiment of the sheet sensing system 10 of the present disclosure. Figure 8 is a simplified side view relating to the first cut line CL1 in Figure 7 of the present disclosure. Figure 9 is a simplified side view relating to the second cut line CL2 in Figure 7 of the present disclosure. Please refer to Figures 6 to 9 simultaneously. The sheet sensing system 10 of the present disclosure is used for a sheet 20 (e.g., paper) and a transparent carrier plate 30 (e.g., a glass carrier plate). The sheet sensing system 10 further includes an upper cover 110.
[0020] The infrared transmitter 104 and the plurality of infrared transmitters 112 are fitted into the upper cover 110. The sheet 20 is placed on the transparent carrier plate 30, and the sheet 20 and the transparent carrier plate 30 are provided between the infrared transmitter 104 and the infrared receiver 106. The microcontroller 102 controls the plurality of infrared transmitters 112 to transmit a plurality of infrared rays 108, and at the same time can turn off the plurality of optical transmitters 124 to avoid interference with the plurality of infrared rays 108. The infrared transmitter 104 transmits a plurality of infrared rays 108 toward the sheet 20 and the transparent carrier plate 30 along the transmission direction D4 (for example, from top to bottom) (for example, transmitted vertically), and the microcontroller 102 then receives the plurality of infrared rays 108 that have passed through the transparent carrier plate 30 along the transmission direction D4 (for example, passing vertically and directly from the top surface of the transparent carrier plate 30 to the bottom surface of the transparent carrier plate 30) (for example, received vertically) (for example, received vertically) the first boundary B1 and the second boundary B2 of the sheet 20 by the infrared receiver 106 (this will be described in detail later).
[0021] The microcontroller 102 moves the contact-type image sensor scanning circuit 116 to the starting region SA and determines the first boundary B1 of the sheet 20 by receiving multiple infrared rays 108 that have passed through the transparent carrier plate 30 using multiple optical sensors 118. As shown in Figure 9, some of the multiple infrared rays 108 (left side of Figure 9) are blocked by the sheet 20 and cannot be transmitted to some of the multiple optical sensors 118 (left side of Figure 9), but other parts of the multiple infrared rays 108 (right side of Figure 9) can be transmitted to other parts of the multiple optical sensors 118 (right side of Figure 9) without being blocked by the sheet 20. Therefore, the contact-type image sensor scanning circuit 116 reads the relevant image depending on whether the multiple optical sensors 118 have received the multiple infrared rays 108, and determines the first boundary B1 using an algorithm, thereby determining the width of the sheet 20 in the Y-axis as shown in Figure 7.
[0022] Figure 10 is a simplified top view (2) of the application of the first embodiment of the sheet sensing system 10 of the present disclosure. Figure 11 is a simplified side view relating to the third cut line CL3 in Figure 10. Please refer to Figures 6, 10, and 11 simultaneously. After determining the first boundary B1 of the sheet 20, the microcontroller 102 moves the contact-type image sensor scanning circuit 116 from the starting region SA along the first direction D1 and determines the second boundary B2 of the sheet 20 by receiving a plurality of infrared rays 108 that have passed through the transparent carrier plate 30 with a plurality of optical sensors 118. As shown in Figure 11, the plurality of infrared rays 108 can be transmitted to the plurality of optical sensors 118 without being obstructed by the sheet 20, so the contact-type image sensor scanning circuit 116 reads the relevant image by receiving the plurality of infrared rays 108 with the plurality of optical sensors 118, and determines the second boundary B2 by an algorithm, thereby determining the length of the sheet 20 in the X-axis as shown in Figure 10.
[0023] Figure 12 is a simplified top view (3) of the application of the first embodiment of the sheet sensing system 10 of the present disclosure. Please refer to Figures 6 and 12 together. After determining the second boundary B2 of the sheet 20, the microcontroller 102 turns on the plurality of optical transmitters 124 of the contact-type image sensor scanning circuit 116 and turns off the plurality of infrared transmitters 112 to avoid interference with the plurality of optical transmitters 124. Next, the microcontroller 102 moves the contact-type image sensor scanning circuit 116 along the return direction D3 and generates a scanned image (not shown in these figures) by scanning the sheet 20 with the plurality of optical sensors 118 and the plurality of optical transmitters 124. Finally, the contact-type image sensor scanning circuit 116 is returned to the starting region SA.
[0024] Figure 13 is a block diagram of a second embodiment of the sheet sensing system 10 of the present disclosure. Figure 14 is a simplified top view (1) of the application of the second embodiment of the sheet sensing system 10 of the present disclosure. Figure 15 is a simplified side view relating to the fourth cut line CL4 in Figure 14 of the present disclosure. Please refer to Figures 13 to 15 simultaneously. The infrared receiving device 106 further includes an infrared receiver 120. The infrared receiver 120 is mounted on the contact-type image sensor scanning circuit 116 (for example, mounted next to the contact-type image sensor scanning circuit 116) so as to be electrically connected to the microcontroller 102.
[0025] The microcontroller 102 moves the contact-type image sensor scanning circuit 116 to the starting region SA and determines the first boundary B1 of the sheet 20 by receiving multiple infrared rays 108 that have passed through the transparent carrier plate 30 using multiple optical sensors 118. This is the same as in the first embodiment of the disclosure above, where the contact-type image sensor scanning circuit 116 reads the relevant image based on whether or not the multiple optical sensors 118 have received multiple infrared rays 108, and determines the first boundary B1 using an algorithm, so it will not be repeated here.
[0026] Figure 16 is a simplified top view (2) of the application of a second embodiment of the sheet sensing system 10 of the present disclosure. Figure 17 is a simplified side view relating to the fourth cut line CL4 in Figure 16 of the present disclosure. Please refer to Figures 13, 16 and 17 simultaneously. After determining the first boundary B1 of the sheet 20, the microcontroller 102 moves the contact-type image sensor scanning circuit 116 along the first direction D1 from the starting region SA until the infrared receiver 120 receives a plurality of infrared rays 108 that have passed through the transparent carrier plate 30. At this time, the second boundary B2 of the sheet 20 can be determined.
[0027] That is, when the infrared receiver 120 receives the infrared 108 while moving (at this time, the infrared 108 is not blocked by the sheet 20), the infrared receiver 120 notifies the microcontroller 102 that it has received the infrared 108. The microcontroller 102 then stops the movement of the contact-type image sensor scanning circuit 116. At this time, the second boundary B2 of the sheet 20 can be determined.
[0028] Figure 18 is a simplified top view (3) of the application of a second embodiment of the sheet sensing system 10 of the present disclosure. Please refer to Figures 13 and 18 simultaneously. After determining the second boundary B2 of the sheet 20, the microcontroller 102 turns on the plurality of optical transmitters 124 of the contact-type image sensor scanning circuit 116 and turns off the plurality of infrared transmitters 112 to avoid interference with the plurality of optical transmitters 124. The microcontroller 102 then moves the contact-type image sensor scanning circuit 116 along the return direction D3 and generates a scanned image (not shown in these figures) by scanning the sheet 20 with the plurality of optical sensors 118 and the plurality of optical transmitters 124. Finally, the contact-type image sensor scanning circuit 116 is returned to the starting region SA.
[0029] Figure 19 is a block diagram of a third embodiment of the sheet sensing system 10 of the present disclosure. Figure 20 is a simplified top view (1) of the application of the third embodiment of the sheet sensing system 10 of the present disclosure. Figure 21 is a simplified side view relating to the fifth cut line CL5 in Figure 20 of the present disclosure. Figure 22 is a simplified side view relating to the sixth cut line CL6 in Figure 20 of the present disclosure.
[0030] Please refer to Figures 19 to 22 simultaneously. The infrared receiving device 106 further includes a mobile structure 122 and an infrared receiver 120. The mobile structure 122 is mounted on the contact-type image sensor scanning circuit 116 so as to be electrically connected to the microcontroller 102 (for example, mounted next to the contact-type image sensor scanning circuit 116). The infrared receiver 120 is mounted on the mobile structure 122 so as to be electrically connected to the microcontroller 102 (for example, mounted next to the mobile structure 122). The microcontroller 102 moves the contact-type image sensor scanning circuit 116 to the starting region SA.
[0031] Figure 23 is a simplified top view (2) of the application of a third embodiment of the sheet sensing system 10 of the present disclosure. Figure 24 is a simplified side view relating to the sixth cut line CL6 in Figure 23 of the present disclosure. Please refer to Figures 19, 23 and 24 simultaneously. The microcontroller 102 moves the contact-type image sensor scanning circuit 116 to the starting region SA, and then controls the moving structure 122 to move the infrared receiver 120 along the second direction D2 until the infrared receiver 120 receives a plurality of infrared rays 108 that have passed through the transparent carrier plate 30. At this time, the first boundary B1 of the sheet 20 can be determined.
[0032] That is, when the infrared receiver 120 receives the infrared 108 while moving (at which time the infrared 108 is not blocked by the sheet 20), the infrared receiver 120 notifies the microcontroller 102 that it has received the infrared 108. The microcontroller 102 then controls the moving structure 122 to stop the movement of the infrared receiver 120. At this time, the first boundary B1 of the sheet 20 can be determined.
[0033] Figure 25 is a simplified top view (3) of the application of a third embodiment of the sheet sensing system 10 of the present disclosure. Figure 26 is a simplified side view relating to the seventh cut line CL7 in Figure 25 of the present disclosure. Please refer to Figures 19, 25 and 26 simultaneously. After determining the first boundary B1 of the sheet 20, the microcontroller 102 controls the moving structure 122 to restore the position of the infrared receiver 120 to the position in Figure 20. The microcontroller 102 then moves the contact-type image sensor scanning circuit 116 along the first direction D1 from the starting region SA until the infrared receiver 120 receives a plurality of infrared rays 108 that have passed through the transparent carrier plate 30. At this time, the second boundary B2 of the sheet 20 can be determined.
[0034] That is, when the infrared receiver 120 receives the infrared 108 while moving (at this time, the infrared 108 is not blocked by the sheet 20), the infrared receiver 120 notifies the microcontroller 102 that it has received the infrared 108. The microcontroller 102 then stops the movement of the contact-type image sensor scanning circuit 116. At this time, the second boundary B2 of the sheet 20 can be determined.
[0035] Figure 27 is a simplified top view (4) of the application of a third embodiment of the sheet sensing system 10 of the present disclosure. Please refer to Figures 19 and 27 simultaneously. After determining the second boundary B2 of the sheet 20, the microcontroller 102 turns on the plurality of optical transmitters 124 of the contact-type image sensor scanning circuit 116 and turns off the plurality of infrared transmitters 112 to avoid interference with the plurality of optical transmitters 124. The microcontroller 102 then moves the contact-type image sensor scanning circuit 116 along the return direction D3 and generates a scanned image (not shown in these figures) by scanning the sheet 20 with the plurality of optical sensors 118 and the plurality of optical transmitters 124. Finally, the contact-type image sensor scanning circuit 116 is returned to the starting region SA.
[0036] Figure 28 is a simplified schematic diagram of an embodiment of the light guide member 114 and receiving area RA of the present disclosure. Here, the upper cover 110 is shown to be open, but the receiving area RA is shown to be in the infrared transmission state when the upper cover 110 is closed. The infrared transmitting device 104 further includes the light guide member 114. The light guide member 114 is fitted into the upper cover 110 and is used to transmit a plurality of infrared rays 108 transmitted from a plurality of infrared transmitters 112 such that the plurality of infrared rays 108 cover the receiving area RA of the infrared receiving device 106. The receiving area RA must include, at least, firstly, the contact-type image sensor scanning circuit 116 located in the starting area SA, and secondly, the range of movement for the contact-type image sensor scanning circuit 116 to sense the infrared rays 108 and the range of movement for the infrared receiver 120 to sense the infrared rays 108.
[0037] As shown in Figure 28, the light guide member 114 is a plurality of light guide strips formed in a cross shape. Figure 29 is a simplified schematic diagram of the application of the present disclosure from Figure 28 to Figure 10. After the contact-type image sensor scanning circuit 116 leaves the starting region SA and before the contact-type image sensor scanning circuit 116 reaches the position shown in Figure 29 of the present disclosure, the plurality of infrared rays 108 are blocked by the sheet 20, so the contact-type image sensor scanning circuit 116 cannot receive the plurality of infrared rays 108. Then, the contact-type image sensor scanning circuit 116 reads the associated image by having some of the plurality of light sensors 118 receive the plurality of infrared rays 108, and determines the second boundary B2 by an algorithm.
[0038] Figure 30 is a simplified schematic diagram of the application of the present disclosure to Figures 28 to 16. Before the contact-type image sensor scanning circuit 116 moves from the starting region SA to the position in Figure 30, the infrared receiver 120 cannot receive the multiple infrared rays 108 because they are blocked by the sheet 20. The infrared receiver 120 then receives the multiple infrared rays 108 that have passed through the transparent carrier plate 30. As a result, the microcontroller 102 determines the second boundary B2 of the sheet 20 by stopping the movement of the contact-type image sensor scanning circuit 116.
[0039] Figure 31 is a simplified schematic diagram of another embodiment of the light guide member 114 and receiving area RA of the present disclosure. Here, the upper cover 110 is shown to be open, while the receiving area RA is shown to be in the infrared transmission state when the upper cover 110 is closed. As shown in Figure 31, the light guide member 114 is a light guide plate having the same size as the transparent carrier plate 30. To more easily explain the contents of the first to third embodiments of the present disclosure, the first to third embodiments employ, for example, infrared transmission over the entire area shown in Figure 31.
[0040] Figure 32 is a simplified schematic diagram of another embodiment of the light guide member 114 and receiving area RA of the present disclosure. Here, the upper cover 110 is shown to be open, while the receiving area RA is shown to be in the infrared transmission state when the upper cover 110 is closed. As shown in Figure 32, the light guide member 114 is a plurality of L-shaped light guide strips. In addition to the embodiments of Figures 28, 31 and 32, a considerable number of infrared transmitters 112 may be fitted into the entire upper cover 110 in the present disclosure. The description of the cover area formed by the plurality of infrared rays 108 transmitted by the other light guide members 114 of the present disclosure and the application of the first to third embodiments described above is the same as the description of Figures 29 and 30 and will not be repeated here.
[0041] Figure 33 is a schematic diagram of the diffuse infrared of the present disclosure. The overall installation cost of the diffuse infrared is relatively low, but an error E1 occurs. However, the error E1 can be calculated, and the error E1 can be improved by adjusting the travel distance of the contact-type image sensor scanning circuit 116 using software. Figure 34 is a schematic diagram of the direct infrared of the present disclosure. The direct infrared utilizes a micron-level special structure 126 inside and on the surface of the light guide member 114 so that the infrared 108 can be transmitted perpendicular to the transparent carrier plate 30, thereby avoiding the occurrence of the error E1 shown in Figure 33, but the overall installation cost of the direct infrared is high.
[0042] Please refer to Figures 2 to 5 again. As can be seen from Figures 2 to 5, the contact-type image sensor scanning circuit 66 of the aforementioned related technology travels approximately twice the length of the glass 50. However, as shown in Figures 14, 16 and 18, for example, the contact-type image sensor scanning circuit 116 of this disclosure travels a shorter distance.
[0043] The infrared radiation 108 in this disclosure is transmitted from the infrared transmitter 104 above, then passes through the transparent carrier plate 30, and is received by the infrared receiver 106 below (thus, through-type infrared radiation is used in this disclosure), thereby avoiding misjudgment of the size and boundaries of the sheet 20 due to the material or color of the sheet 20. In this disclosure, the size and boundaries of the sheet 20 are determined by whether or not the infrared radiation 108 penetrates the sheet 20. In this disclosure, the overall scanning time and power consumption can be reduced by reducing the travel distance of the infrared receiver 106 (i.e., the contact-type image sensor scanning circuit 116). In this disclosure, the size and boundaries of the sheet 20 are determined in a stepless manner, and the number of infrared sensors can be further reduced.
[0044] While this disclosure has been described with reference to the embodiments thereof, it should be understood that this disclosure is not limited to those details. Various substitutions and modifications have been proposed in the above description, and those skilled in the art will be able to conceive of other substitutions and modifications. Therefore, all such substitutions and modifications are intended to be within the scope of this disclosure. [Explanation of Symbols]
[0045] 10. Seat Sensing System 20, Sheet 30. Transparent carrier plate 40. Paper 50, glass 60. First reflective infrared sensor 62. Second type of reflective infrared sensor 64. Infrared 66. Related technology: Contact-type image sensor scanning circuit 102. Microcontroller 104. Infrared Transmitter 106. Infrared receiver 108, Infrared 110, Top cover 112. Infrared transmitter 114, Light guide member 116. Contact-type image sensor scanning circuit 118. Light sensor 120, Infrared receiver 122, moving structure 124. Optical Transmitter 126, special structure B, boundary B1, first boundary B2, second boundary CL1, first tangent CL2, second tangent CL3, third tangent CL4, 4th tangent CL5, 5th tangent CL6, 6th tangent CL7, 7th tangent D1, first direction D2, second direction D3, return direction D4. Sending direction E1, Error RA, Trusted Area SA, Starting Point Domain
Claims
1. A sheet and a rectangular transparent carrier plate in which two pairs of outer edges extend along a first direction and a second direction perpendicular to the first direction, the sheet is used in a sheet sensing system placed on the transparent carrier plate, An upper cover that covers the aforementioned transparent carrier plate, Microcontroller and An infrared transmitter provided on the upper cover so as to be electrically connected to the microcontroller, The infrared receiving device is electrically connected to the microcontroller and extends along the second direction so as to move along the first direction, The infrared transmitting device includes a plurality of infrared transmitters arranged along both the first and second directions. The infrared receiving device includes a plurality of light sensors arranged along the second direction and a contact-type image sensor scanning circuit electrically connected to the microcontroller. The sheet and the transparent carrier plate are provided between the infrared transmitter and the infrared receiver. The aforementioned microcontroller is The infrared transmitter is controlled to transmit infrared rays toward the sheet and the transparent carrier plate. The infrared receiving device is moved along the first direction, and the plurality of light sensors receive the infrared light that has passed through the transparent carrier plate, thereby identifying a first boundary of the sheet extending along the first direction and a second boundary of the sheet extending along the second direction. Seat sensing system.
2. The infrared transmitting device further includes a light guide member, The light guide member is fitted into the upper cover and transmits the infrared light transmitted from the infrared transmitter such that the infrared light covers the receiving area of the infrared receiver. The sheet sensing system according to claim 1.
3. The light guide member is a light guide plate or a plurality of light guide strips formed in a cross shape or an L shape. The sheet sensing system according to claim 2.
4. A sheet and a rectangular transparent carrier plate in which two pairs of outer edges extend along a first direction and a second direction perpendicular to the first direction, the sheet is used in a sheet sensing system placed on the transparent carrier plate, An upper cover that covers the aforementioned transparent carrier plate, Microcontroller and An infrared transmitter provided on the upper cover so as to be electrically connected to the microcontroller, The infrared receiving device is electrically connected to the microcontroller and extends along the second direction so as to move along the first direction, The infrared transmitting device includes a plurality of infrared transmitters arranged along both the first and second directions. The infrared receiving device includes a plurality of optical sensors and an infrared receiver arranged along the second direction, and also includes a contact-type image sensor scanning circuit electrically connected to the microcontroller. The sheet and the transparent carrier plate are provided between the infrared transmitter and the infrared receiver. The aforementioned microcontroller is The infrared transmitter is controlled to transmit infrared rays toward the sheet and the transparent carrier plate. The infrared receiving device is moved along the first direction, and the plurality of light sensors receive the infrared light that has passed through the transparent carrier plate, thereby identifying a first boundary of the sheet extending along the first direction, and when the infrared receiver receives the infrared light that has passed through the transparent carrier plate, it identifies a second boundary of the sheet extending along the second direction. Seat sensing system.
5. A sheet and a rectangular transparent carrier plate in which two pairs of outer edges extend along a first direction and a second direction perpendicular to the first direction, the sheet is used in a sheet sensing system placed on the transparent carrier plate, An upper cover that covers the aforementioned transparent carrier plate, Microcontroller and An infrared transmitter provided on the upper cover so as to be electrically connected to the microcontroller, The system includes an infrared receiving device that is electrically connected to the microcontroller and moves along the first direction, The infrared transmitting device includes a plurality of infrared transmitters arranged along both the first and second directions. The infrared receiving device includes an infrared receiver and a moving structure for moving the infrared receiver along the second direction, and also includes a contact-type image sensor scanning circuit electrically connected to the microcontroller. The sheet and the transparent carrier plate are provided between the infrared transmitter and the infrared receiver. The aforementioned microcontroller is The infrared transmitter is controlled to transmit infrared rays toward the sheet and the transparent carrier plate. The movement structure is controlled to move the infrared receiver along the second direction, and when the infrared receiver receives the infrared light that has passed through the transparent carrier plate, a first boundary extending along the first direction of the sheet is identified. The infrared receiving device is moved along the first direction, and when the infrared receiver receives the infrared light that has passed through the transparent carrier plate, a second boundary of the sheet extending along the second direction is identified. Seat sensing system.
6. The aforementioned contact-type image sensor scanning circuit includes a plurality of optical transmitters, Multiple optical transmitters are electrically connected to the microcontroller. After determining the first and second boundaries of the sheet, the microcontroller moves the contact-type image sensor scanning circuit along the return direction, thereby scanning the sheet with the multiple optical sensors and multiple optical transmitters. A sheet sensing system according to any one of claims 1 to 4.
Citation Information
Patent Citations
Image reader, control method of image reader and control program of image reader
JP2008252381A
Image reading apparatus
JP2021083025A