Seatbelt determination device, vehicle, seatbelt determination method, and seatbelt determination program

Abstract

SOLUTION: A seat belt determination device includes a determination unit which determines whether a seat belt worn by an occupant on a movable body is correctly worn. The determination unit determines whether the seat belt is correctly worn on the basis of at least one of a first angle heading toward a shoulder anchor of the seat belt and a second angle heading toward a buckle of the seat belt. The seat belt determination device may further include an imaging unit which outputs a photographed image of the occupant by imaging the occupant. The determination unit may determine whether the seat belt worn by the occupant is correctly worn on the basis of at least one of the first angle and the second angle obtained from the photographed image.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a seat belt determination device, a vehicle, a seat belt determination method, and a seat belt determination program. [Background technology]

[0002] In recent years, efforts to provide access to sustainable transportation systems that take into consideration vulnerable traffic participants have been gaining momentum. To achieve this, efforts are being made to further improve traffic safety and convenience through research and development of preventive safety technologies. Patent Document 1 discloses a seat belt device that is disposed in front of a vehicle occupant and has a detection means for detecting whether the seat belt is fastened around the upper body of the occupant. [Prior art document] [Patent documents] [Patent Document 1] JP 2005-280483 A Summary of the Invention [Problem to be solved by the invention]

[0003] In preventive safety technology, ensuring that vehicle occupants properly fasten their seat belts is an issue. The present application aims to achieve proper fastening of seat belts in order to solve the above issue, and ultimately contribute to the development of sustainable transportation systems. [Means for solving the problem]

[0004] In a first aspect of the present invention, there is provided a seat belt determination device. The seat belt determination device includes, for example, a determination unit that determines whether a seat belt worn by an occupant in a moving object is worn correctly. The determination unit determines whether the seat belt is worn correctly based on, for example, at least one of a first angle of the seat belt toward a shoulder anchor and a second angle of the seat belt toward a buckle.

[0005] The seat belt judgment device may further include an imaging unit that captures an image of the occupant and outputs the captured image of the occupant, and the judgment unit may judge whether the seat belt worn by the occupant is correctly fastened based on at least one of the first angle and the second angle obtained from the captured image.

[0006] In the above-mentioned seat belt determination device, the determination unit may determine whether the seat belt worn by the occupant is worn correctly by comparing at least one of the first angle and the second angle obtained from the captured image with at least one of the first angle and the second angle of the reference image.

[0007] In the above-mentioned seat belt judgment device, the imaging unit may be provided in front of the occupant, the captured image may be a front image of the occupant, and at least one of the first angle and the second angle may be an angle that captures the seat belt from the front of the occupant.

[0008] In the above-mentioned seat belt judgment device, the imaging unit may be provided on the side of the occupant, the captured image may be a side image of the occupant, and at least one of the first angle and the second angle may be an angle that captures the seat belt from the side of the occupant.

[0009] The above-mentioned seat belt judgment device may further include a first detection unit provided in the shoulder anchor of the seat belt and detecting a first angle, and the judgment unit may judge whether the seat belt is worn correctly based on the detection result of the first detection unit.

[0010] The above-mentioned seat belt judgment device may further include a second detection unit provided on the seat belt buckle that detects a second angle, and the judgment unit may judge whether the seat belt is worn correctly based on the detection result of the second detection unit.

[0011] In the seatbelt determination device, the first detection unit and the second detection unit may be rotation angle sensors.

[0012] In the seatbelt determination device, the determination unit may determine that the seatbelt is worn correctly when the first angle is within a predetermined first range.

[0013] In the seatbelt determination device, the determination unit may determine that the seatbelt is correctly fastened when the second angle is within a predetermined second range.

[0014] In the above-mentioned seat belt determination device, the determination unit may determine that the seat belt is correctly fastened when the first angle is within a predetermined first range and the second angle is within a predetermined second range.

[0015] The seatbelt determination device may further include a storage unit that stores the first range and the second range.

[0016] The seat belt determination device may further include a notification unit that notifies the occupant that the seat belt is not properly fastened when the determination unit determines that the seat belt is not properly fastened.

[0017] In a second aspect of the present invention, there is provided a vehicle, the vehicle including the seat belt determination device.

[0018] In a third aspect of the present invention, there is provided a seat belt determination method. The seat belt determination method includes, for example, a determination step of determining whether a seat belt worn by a passenger in a vehicle is worn correctly. The determination step determines whether the seat belt is worn correctly based on, for example, at least one of a first angle of the seat belt toward a shoulder anchor and a second angle of the seat belt toward a buckle.

[0019] In a fourth aspect of the present invention, there is provided a seat belt determination program. The seat belt determination program causes a computer to execute a determination procedure for determining whether a seat belt worn by a passenger in a vehicle is worn correctly. The determination procedure determines whether the seat belt is worn correctly based on at least one of a first angle of the seat belt toward a shoulder anchor and a second angle of the seat belt toward a buckle.

[0020] The above summary of the invention does not list all of the necessary features of the present invention, and subcombinations of these features may also constitute inventions. [Brief explanation of the drawings]

[0021] [Figure 1] A first example of a front view of a seat belt 20 is shown diagrammatically. [Figure 2] 1 shows an example of the configuration of a seatbelt determination device 100. [Figure 3] 1 is a schematic illustration of an example of a side view of a seat belt 20. FIG. [Figure 4] A second example of a front view of a seat belt 20 is shown diagrammatically. [Figure 5] 4 is a flowchart showing an example of the operation of the seatbelt determination device 100. [Figure 6] 3 is a third example of a front view of a seat belt 20, schematically showing an example in which a blanket 300 is draped over the seat belt 20. FIG. [Figure 7] 10 is a fourth example of a front view of a seat belt 20, schematically showing an example in which a blanket 300 is draped over the seat belt 20. FIG. [Figure 8] An example of a computer 2200 is shown schematically. DETAILED DESCRIPTION OF THE INVENTION

[0022] The present invention will be described below through embodiments of the invention, but the following embodiments do not limit the scope of the invention. Furthermore, not all of the combinations of features described in the embodiments are necessarily essential to the solution of the invention. In the drawings, the same reference numerals are used to designate the same or similar parts, and redundant explanations may be omitted.

[0023] FIG. 1 schematically shows a first example of a front view of a seat belt 20. As shown in FIG. 1, the seat belt 20 is attached to a seat of a vehicle, which is a moving body, and worn by an occupant 200. The seat belt 20 includes a webbing 21, a shoulder anchor 22, a buckle 23, and an outer anchor 24. In this embodiment, the portion of the webbing 21 extending from the shoulder anchor 22 to the buckle 23 is referred to as a shoulder belt 21a, and the portion extending from the buckle 23 to the outer anchor 24 is referred to as a lap belt 21b. The webbing 21 is a belt for restraining the occupant 200 in the seat.

[0024] FIG. 1 shows an example in which the seat belt 20 is correctly fastened to the occupant 200 (normal state). As shown in FIG. 1, the shoulder belt 21a of the webbing 21 is fastened in a straight line from the right shoulder to the left hip of the occupant 200. In this embodiment, the angle formed between the direction of the shoulder belt 21a toward the shoulder anchor 22 and the vertical direction is referred to as a first angle 31, and the angle formed between the direction of the shoulder belt 21a toward the buckle 23 and the vertical direction is referred to as a second angle 32. In the example of the normal state shown in FIG. 1, the first angle 31 and the second angle 32 are approximately 45 degrees.

[0025] The seat belt 20 has a retractor and a tongue plate (not shown). The retractor is a device that retracts the webbing 21 and is fixed to the inside of the side of the vehicle body, etc. The retractor is a motor retractor that is equipped with a motor and can retract the webbing 21 by the power of the motor. The tongue plate engages with the buckle 23 when the occupant fastens the seat belt 20, and is supported by the webbing 21 so as to be slidable.

[0026] The buckle 23 is fixed to the seat, and a tongue plate is inserted and engaged in a releasable manner near the waist of the occupant. The buckle 23 also includes a seat belt fastening sensor 12 that detects the fastening or release of the seat belt 20 by detecting the engagement of the tongue plate. An outer anchor 24 fastens one end of the webbing 21 to the vehicle body.

[0027] Fig. 2 shows a schematic diagram of an example of the configuration of the seat belt determination device 100. In this embodiment, the seat belt determination device 100 is mounted on a vehicle, but may be mounted on other moving objects. As shown in Fig. 2, the seat belt determination device 100 has a control unit 10, an imaging unit 11, and a seat belt fastening sensor 12. The control unit 10 has a storage unit 13, an angle detection unit 14, a determination unit 15, and a notification unit 16. The control unit 10 is configured with, for example, an ECU (Electronic Control Unit) including a processor (microprocessor), digital circuits such as memory, analog circuits, communication circuits, etc.

[0028] When the occupant 200 fastens the seat belt 20, the seat belt fastening sensor 12 detects that the tongue plate has engaged with the buckle 23, thereby detecting fastening of the seat belt 20. When detecting that the seat belt 20 has been fastened, the seat belt fastening sensor 12 transmits a seat belt fastening notification to the imaging unit 11.

[0029] The imaging unit 11 is provided in front of the occupant 200 riding in the vehicle, and captures an image of the occupant 200 riding in the vehicle. The imaging unit 11 is, for example, a CCD (Charge Coupled Device) camera. When the imaging unit 11 receives a seat belt fastening notification from the seat belt fastening sensor 12, it captures an image of the area around the seat belt 20. The imaging unit 11 transmits the captured image including the seat belt 20 to the storage unit 13. The imaging unit 11 transmits a notification to the angle detection unit 14 that the captured image has been captured.

[0030] The storage unit 13 stores the captured image including the seat belt captured by the imaging unit 11. The storage unit 13 stores a reference image indicating the first angle 31 and the second angle 32, and angle data indicating the appropriate range of the first angle 31 and the appropriate range of the second angle 32. The storage unit 13 may also store various other information. The storage unit 13 is configured with a data-rewritable memory such as an EEPROM (Electrically Erasable PROM) or a flash memory.

[0031] When the angle detection unit 14 receives a notification from the imaging unit 11 that an image has been captured, it performs image analysis on the captured image to detect and identify a first angle 31 at which the shoulder belt 21a approaches the shoulder anchor 22 and a second angle 32 at which the shoulder belt 21a approaches the buckle 23. The angle detection unit 14 transmits the identified first angle 31 and second angle 32 to the determination unit 15.

[0032] The determination unit 15 determines whether the "seat belt 20 is properly fastened around the upper body of the occupant 200." Here, an "improper" fastening state means that the portion of the shoulder belt 21a near the shoulder anchor 22 or the portion of the shoulder belt 21a near the buckle 23 is displaced upward, downward, or to the side from the original fastening state.

[0033] The determination unit 15 determines whether the seat belt 20 is correctly fastened to the occupant 200 based on the first angle 31 and the second angle 32 received from the angle detection unit 14. The determination unit 15 may determine whether the seat belt 20 is correctly fastened to the occupant 200 based on at least one of the first angle 31 and the second angle 32.

[0034] In this embodiment, the determination unit 15 determines whether the first angle 31 and the second angle 32 in the captured image are within the appropriate ranges by referring to angle data indicating the appropriate range of the first angle 31, i.e., the first range, and the appropriate range of the second angle 32, i.e., the second range, stored in the storage unit 13. The first range is, for example, a range from 20 degrees to 30 degrees. The second range is, for example, a range from 30 degrees to 40 degrees.

[0035] In another embodiment, the determination unit 15 may compare at least one of the first angle 31 and the second angle 32 obtained from the captured image with at least one of the first angle 31 and the second angle 32 of the reference image stored in the storage unit 13. In this case, the determination unit 15 may compare the captured image with the reference image to detect an angle deviation between the first angle 31 and the second angle 32 of the captured image and the first angle 31 and the second angle 32 of the reference image, and determine whether the angle deviation is within a predetermined range. A plurality of reference images may be stored in the storage unit 13, and the reference image may represent an example of an inappropriate first angle 31 and second angle 32.

[0036] In this embodiment, the determination unit 15 determines that the seat belt 20 is correctly fastened when the first angle 31 is within a predetermined first range (e.g., 20 to 30 degrees) and the second angle 32 is within a predetermined second range (e.g., 30 to 40 degrees). In the example of the normal state shown in FIG. 1 , the first angle 31 and the second angle 32 are approximately 30 degrees, so the determination unit 15 determines that the seat belt 20 is correctly fastened by the occupant 200. The determination unit 15 transmits the determination result as to whether the seat belt 20 is correctly fastened by the occupant 200 to the notification unit 16.

[0037] In another embodiment, the determination unit 15 may determine that the seat belt 20 is worn correctly when the first angle 31 is within a predetermined first range, and may determine that the seat belt 20 is worn correctly when the second angle 32 is within a predetermined second range.

[0038] The notification unit 16 receives the determination result from the determination unit 15, and if it is determined that the seat belt 20 is not properly fastened by the occupant 200, it issues an alarm to notify the occupant 200 that the seat belt 20 is not properly fastened. The notification unit 16 is connected to an external speaker or display device, and notifies the occupant 200 that the seat belt 20 is not properly fastened via the speaker or display device.

[0039] The notification unit 16 may notify the occupant 200 that the seat belt 20 is not fastened correctly by, for example, a voice message, a lamp display, a text message display, or a buzzer sound. An example of the voice message is, "The seat belt is not fastened correctly. Please fasten it correctly." By notifying the occupant 200 that the seat belt 20 is not fastened correctly, the occupant 200 can be prompted to correct the fastening state of the seat belt 20 and fasten it correctly.

[0040] Fig. 3 shows a schematic side view of a seat belt 20. As shown in Fig. 3, the imaging unit 11 is provided in front of the occupant 200 in the vehicle, and captures an image of the occupant 200 in the vehicle from the front. The imaging units 11 are provided in front of the driver's seat and passenger seat, and in front of the rear seats, respectively, and can capture an image of the occupant 200 in the front seat or the rear seat and the seat belt 20 fastened.

[0041] In this embodiment, the imaging unit 11 is provided in front of the occupant 200, so the captured image is a front image of the occupant 200, and the first angle 31 and the second angle 32 are angles at which the seat belt 20 is captured from the front of the occupant 200. Note that in other embodiments, the imaging unit 11 may be provided on the side of the occupant 200. In this case, the captured image is a side image of the occupant 200, and the first angle 31 and the second angle 32 are angles at which the seat belt 20 is captured from the side of the occupant 200.

[0042] Fig. 4 is a schematic front view of a second example of the seat belt 20. Fig. 4 shows an example in which the seat belt 20 is not properly fastened (abnormal state) to the occupant 200. As shown in Fig. 4, the shoulder belt 21a of the webbing 21 passes under the right arm of the occupant 200 and is fastened in a bent manner from the right shoulder to the left hip of the occupant 200.

[0043] The angle detection unit 14 analyzes the captured image to detect the first angle 31 and the second angle 32. In the example shown in Fig. 4, the first angle 31 is detected to be approximately 15 degrees, and the second angle 32 is detected to be approximately 60 degrees. Therefore, the determination unit 15 determines that the seat belt 20 is not properly fastened by the occupant 200 because the conditions that the first angle 31 is within a predetermined first range (e.g., 20 to 30 degrees) and the second angle 32 is within a predetermined second range (e.g., 30 to 40 degrees) are not satisfied.

[0044] The determination unit 15 transmits the determination result that the seat belt 20 is not properly fastened by the occupant 200 to the notification unit 16. The notification unit 16 notifies the occupant 200 with a voice message such as, "The seat belt is not properly fastened. Please fasten it properly." This voice message is distinguished from the voice message that is notified when the seat belt is not fastened while driving a vehicle.

[0045] 5 is a flowchart showing an example of the operation of the seat belt determination device 100. In step S01, when the occupant 200 fastens the seat belt 20, in step S02, the seat belt fastening sensor 12 detects that the seat belt is fastened and transmits a seat belt fastening notification to the imaging unit 11. In step S03, the imaging unit 11, which has received the seat belt fastening notification, captures an image of the occupant 200 and the seat belt 20. The imaging unit 11 notifies the angle detection unit 14 that it has captured an image.

[0046] In step S04, upon receiving the notification that imaging has been performed, angle detection unit 14 detects first angle 31 and second angle 32 by referring to the captured image stored in storage unit 13. In step S05, determination unit 15 determines whether the determination condition is met, i.e., whether first angle 31 is within a predetermined first range (e.g., 20 to 30 degrees) and whether second angle 32 is within a predetermined second range (e.g., 30 to 40 degrees).

[0047] If the determination condition is met (step S05: YES), the process proceeds to step S06, and the notification unit 16 does not issue an alarm. If the determination condition is not met (step S05: NO), the process proceeds to step S07, and the notification unit 16 issues an alarm to the occupant 200. The occupant 200 adjusts the fastening state of the seat belt 20 and wears it correctly.

[0048] Fig. 6 is a third example of a front view of the seat belt 20, schematically showing an example where the blanket 300 is draped over the seat belt 20. Fig. 7 is a fourth example of a front view of the seat belt 20, schematically showing an example where the blanket 300 is draped over the seat belt 20. Fig. 6 shows a normal state corresponding to Fig. 1, and Fig. 7 shows an abnormal state corresponding to Fig. 4. As shown in Figs. 6 and 7, even when the blanket 300 is draped over the occupant 200, the areas near the shoulder anchor 22 and the buckle 23 are visible, and a first angle 31 at which the shoulder belt 21a approaches the shoulder anchor 22 and a second angle 32 at which the shoulder belt 21a approaches the buckle 23 can be detected by imaging.

[0049] The seat belt determination device 100 according to the above embodiment determines whether the seat belt 20 is properly fastened by the occupant 200 based on at least one of the first angle 31 at which the shoulder belt 21a faces the shoulder anchor 22 and the second angle 32 at which the shoulder belt 21a faces the buckle 23. Therefore, for example, as shown in FIGS. 6 and 7, it is possible to determine whether the seat belt 20 is properly fastened even when most of the upper body of the occupant 200 is covered with a blanket 300.

[0050] In the seat belt determination device 100 according to the above embodiment, the first angle 31 at which the shoulder belt 21a moves toward the shoulder anchor 22 and the second angle 32 at which the shoulder belt 21a moves toward the buckle 23 are detected based on the captured image captured by the imaging unit 11. However, the first angle 31 and the second angle 32 may be detected by a rotation angle sensor. In this case, the first rotation angle sensor may be provided in the shoulder anchor 22, and the first angle 31 may be detected by detecting the rotation angle of the shoulder anchor 22. Furthermore, the second rotation angle sensor may be provided in the buckle 23, and the second angle 32 may be detected by detecting the rotation angle of the buckle 23. The rotation angle sensor may be a magnetic rotation angle sensor that detects a change in the rotation angle by converting a change in a magnetic field into electrical resistance.

[0051] In the seat belt determination device 100 according to the above embodiment, the imaging unit 11 is provided in front of the occupant 200, and therefore the first angle 31 and the second angle 32 are angles at which the seat belt 20 is captured from the front of the occupant 200. However, the imaging unit 11 may be provided in front of and on the side of the occupant 200. In this case, the first angle 31 may include both the angle in the front image and the angle in the side image, and the second angle 32 may include both the angle in the front image and the angle in the side image. In this case, the determination unit 15 may make a determination by referring to a table that lists both the appropriate angles in the front image and the appropriate angles in the side image. The determination unit 15 may determine that the seat belt 20 is properly fastened when either the first angle 31 (or the second angle 32) in the front image is within an appropriate range or the first angle 31 (or the second angle 32) in the side image is within an appropriate range.

[0052] Various embodiments of the present invention may also be described with reference to flowcharts and block diagrams, where the blocks may represent (1) stages of a process in which operations are performed or (2) sections of an apparatus responsible for performing the operations. Particular stages and sections may be implemented by dedicated circuitry, programmable circuitry provided with computer-readable instructions stored on a computer-readable medium, and / or a processor provided with computer-readable instructions stored on a computer-readable medium. Dedicated circuitry may include digital and / or analog hardware circuitry, and may include integrated circuits (ICs) and / or discrete circuits. Programmable circuitry may include reconfigurable hardware circuitry, including logical AND, OR, XOR, NAND, NOR, and other logic operations, flip-flops, registers, memory elements such as field programmable gate arrays (FPGAs), programmable logic arrays (PLAs), and the like.

[0053] A computer-readable medium may include any tangible device capable of storing instructions that are executed by an appropriate device, such that the computer-readable medium having instructions stored thereon comprises an article of manufacture containing instructions that can be executed to create means for performing the operations specified in the flowcharts or block diagrams. Examples of computer-readable media may include electronic, magnetic, optical, electromagnetic, and semiconductor storage media. More specific examples of computer-readable media may include floppy disks, diskettes, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), electrically erasable programmable read-only memory (EEPROM), static random access memory (SRAM), compact disc read-only memory (CD-ROM), digital versatile disc (DVD), Blu-ray (RTM) disc, memory stick, integrated circuit card, and the like.

[0054] The computer readable instructions may include either assembler instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state-setting data, or source or object code written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Smalltalk®, JAVA®, C++, etc., and conventional procedural programming languages ​​such as the “C” programming language or similar programming languages.

[0055] The computer-readable instructions may be provided to a processor or programmable circuitry of a general-purpose computer, special-purpose computer, or other programmable data processing apparatus, either locally or over a wide-area network (WAN) such as a local area network (LAN), the Internet, etc., which executes the computer-readable instructions to create means for performing the operations specified in the flowcharts or block diagrams. Examples of processors include computer processors, processing units, microprocessors, digital signal processors, controllers, microcontrollers, etc.

[0056] 8 illustrates an example of a computer 2200 in which aspects of the present invention may be embodied, in whole or in part. Programs installed on the computer 2200 may cause the computer 2200 to function as or perform operations associated with an apparatus or one or more sections of the apparatus according to embodiments of the present invention, and / or to perform a process or steps of a process according to embodiments of the present invention. Such programs may be executed by the CPU 2212 to cause the computer 2200 to perform specific operations associated with some or all of the blocks in the flowcharts and block diagrams described herein.

[0057] A computer 2200 according to this embodiment includes a CPU 2212, a RAM 2214, a graphics controller 2216, and a display device 2218, which are interconnected by a host controller 2210. The computer 2200 also includes input / output units such as a communication interface 2222, a hard disk drive 2224, a DVD-ROM drive 2226, and an IC card drive, which are connected to the host controller 2210 via an input / output controller 2220. The computer also includes legacy input / output units such as a ROM 2230 and a keyboard 2242, which are connected to the input / output controller 2220 via an input / output chip 2240.

[0058] The CPU 2212 operates according to programs stored in the ROM 2230 and RAM 2214, thereby controlling each unit. The graphics controller 2216 acquires image data generated by the CPU 2212 into a frame buffer or the like provided in the RAM 2214 or into the graphics controller 2216 itself, and causes the image data to be displayed on the display device 2218.

[0059] The communication interface 2222 communicates with other electronic devices via a network. The hard disk drive 2224 stores programs and data used by the CPU 2212 in the computer 2200. The DVD-ROM drive 2226 reads programs or data from the DVD-ROM 2201 and provides the programs or data to the hard disk drive 2224 via the RAM 2214. The IC card drive reads programs and data from an IC card and / or writes programs and data to an IC card.

[0060] The ROM 2230 stores therein a boot program or the like that is executed by the computer 2200 upon activation, and / or programs that depend on the hardware of the computer 2200. The input / output chip 2240 may also connect various input / output units to the input / output controller 2220 via a parallel port, a serial port, a keyboard port, a mouse port, etc.

[0061] The programs are provided by a computer-readable medium such as a DVD-ROM 2201 or an IC card. The programs are read from the computer-readable medium, installed in the hard disk drive 2224, RAM 2214, or ROM 2230, which are also examples of computer-readable media, and executed by the CPU 2212. Information processing described in these programs is read by the computer 2200, and brings about cooperation between the programs and the various types of hardware resources described above. An apparatus or method may be configured by realizing information manipulation or processing in accordance with the use of the computer 2200.

[0062] For example, when communication is performed between the computer 2200 and an external device, the CPU 2212 may execute a communication program loaded into the RAM 2214 and instruct the communication interface 2222 to perform communication processing based on the processing described in the communication program. Under the control of the CPU 2212, the communication interface 2222 reads transmission data stored in a transmission buffer processing area provided in the RAM 2214, the hard disk drive 2224, the DVD-ROM 2201, or a recording medium such as an IC card, and transmits the read transmission data to the network, or writes reception data received from the network to a reception buffer processing area or the like provided on the recording medium.

[0063] The CPU 2212 may also cause all or a necessary portion of a file or database stored on an external recording medium such as the hard disk drive 2224, the DVD-ROM drive 2226 (DVD-ROM 2201), an IC card, etc. to be read into the RAM 2214, and perform various types of processing on the data on the RAM 2214. The CPU 2212 then writes back the processed data to the external recording medium.

[0064] Various types of information, such as various types of programs, data, tables, and databases, may be stored on the recording medium and may undergo information processing. The CPU 2212 may perform various types of processing on data read from the RAM 2214, including various types of operations, information processing, conditional judgment, conditional branching, unconditional branching, information search / replacement, etc., as described throughout this disclosure and specified by the instruction sequences of the programs, and write the results back to the RAM 2214. The CPU 2212 may also search for information in a file, database, etc. on the recording medium. For example, if multiple entries each having an attribute value of a first attribute associated with an attribute value of a second attribute are stored on the recording medium, the CPU 2212 may search for an entry that matches a condition specified by the attribute value of the first attribute from among the multiple entries, read the attribute value of the second attribute stored in the entry, and thereby obtain the attribute value of the second attribute associated with the first attribute that satisfies a predetermined condition.

[0065] The above-described programs or software modules may be stored in a computer-readable medium on or near the computer 2200. A recording medium such as a hard disk or RAM provided in a server system connected to a dedicated communication network or the Internet can also be used as a computer-readable medium, thereby providing the programs to the computer 2200 via the network.

[0066] Although the present invention has been described above using embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments. It will be apparent to those skilled in the art that various modifications and improvements can be made to the above embodiments. Furthermore, the details described for a particular embodiment can be applied to other embodiments to the extent that they are not technically inconsistent. Furthermore, each component may have the same features as other components with the same name but different reference numerals. It is apparent from the claims that such modifications and improvements can also be included within the technical scope of the present invention.

[0067] It should be noted that the execution order of each process, such as operations, procedures, steps, and stages, in the devices, systems, programs, and methods shown in the claims, specifications, and drawings is not specifically stated as "before," "prior to," etc., and that the processes can be performed in any order unless the output of a previous process is used in a subsequent process. Even if the operational flow in the claims, specifications, and drawings is described using "first," "next," etc. for convenience, this does not mean that the processes must be performed in this order. [Explanation of symbols]

[0068] 10 control unit, 11 imaging unit, 12 seat belt fastening sensor, 13 memory unit, 14 angle detection unit, 15 determination unit, 16 notification unit, 20 seat belt, 21 webbing, 21a shoulder belt, 21b lap belt, 22 shoulder anchor, 23 buckle, 24 outer anchor, 31 first angle, 32 second angle, 100 seat belt determination device, 200 occupant, 300 blanket, 2200 computer, 2201 DVD-ROM, 2210 host controller, 2212 CPU, 2214 RAM, 2216 graphics controller, 2218 display device, 2220 input / output controller, 2222 communication interface, 2224 hard disk drive, 2226 DVD-ROM drive, 2230 ROM, 2240 input / output chip, 2242 keyboard

Claims

1. a determination unit that determines whether a seat belt fastened by an occupant in a vehicle is fastened correctly; an imaging unit that captures an image of the occupant and outputs the captured image of the occupant; and the determination unit determines whether the seat belt is worn correctly based on at least one of a first angle of the seat belt toward a shoulder anchor and a second angle of the seat belt toward a buckle; the determination unit determines whether the seat belt worn by the occupant is correctly fastened by comparing the at least one of the first angle and the second angle obtained from the captured image with the at least one of the first angle and the second angle of a reference image; Seatbelt detection device.

2. the imaging unit is provided in front of the occupant, the captured image is a front image of the occupant, The seat belt determination device according to claim 1 , wherein the at least one of the first angle and the second angle is an angle at which the seat belt is viewed from in front of the occupant.

3. the imaging unit is provided on a side of the occupant, the captured image is a side image of the occupant, The seat belt determination device according to claim 1 , wherein the at least one of the first angle and the second angle is an angle of the seat belt projected from a side of the occupant.

4. A determination unit that determines whether a seat belt fastened to an occupant of a moving body is fastened correctly; a first detector provided in a shoulder anchor of the seat belt and configured to detect a first angle; and The determination unit determines whether the seat belt is worn correctly based on at least one of the first angle of the seat belt toward the shoulder anchor and the second angle of the seat belt toward the buckle. The determination unit determines whether the seat belt is properly fastened based on the detection result of the first detection unit. Seatbelt detection device.

5. a second detector provided in the buckle of the seat belt and configured to detect the second angle; The seat belt determination device according to claim 4 , wherein the determination unit determines whether the seat belt is worn correctly based on a detection result of the second detection unit.

6. The seat belt determination device according to claim 5 , wherein the first detection unit and the second detection unit are rotation angle sensors.

7. The seat belt determination device according to claim 1 , wherein the determination unit determines that the seat belt is correctly fastened when the first angle is within a predetermined first range.

8. The seat belt determination device according to claim 1 , wherein the determination unit determines that the seat belt is correctly fastened when the second angle is within a predetermined second range.

9. 7. The seat belt determination device according to claim 1, wherein the determination unit determines that the seat belt is correctly fastened when the first angle is within a predetermined first range and the second angle is within a predetermined second range.

10. The seat belt determination device according to claim 9 , further comprising a storage unit that stores the first range and the second range.

11. A determination unit that determines whether a seat belt fastened to an occupant in a moving body is fastened correctly, the determination unit determines whether the seat belt is worn correctly based on at least one of a first angle of the seat belt toward a shoulder anchor and a second angle of the seat belt toward a buckle; The determination unit determines that the seat belt is correctly fastened when the first angle is within a predetermined first range. Seatbelt detection device.

12. A determination unit that determines whether a seat belt fastened to an occupant in a moving body is fastened correctly, the determination unit determines whether the seat belt is worn correctly based on at least one of a first angle of the seat belt toward a shoulder anchor and a second angle of the seat belt toward a buckle; The determination unit determines that the seat belt is correctly fastened when the second angle is within a predetermined second range. Seatbelt detection device.

13. A determination unit that determines whether a seat belt fastened to an occupant in a moving body is fastened correctly, the determination unit determines whether the seat belt is worn correctly based on at least one of a first angle of the seat belt toward a shoulder anchor and a second angle of the seat belt toward a buckle; The determination unit determines that the seat belt is correctly fastened when the first angle is within a predetermined first range and the second angle is within a predetermined second range. Seatbelt detection device.

14. The seat belt determination device according to claim 13, further comprising a storage unit that stores the first range and the second range.

15. 15. The seat belt determination device according to claim 1, further comprising an alarm unit that, when the determination unit determines that the seat belt is not properly fastened, notifies the occupant that the seat belt is not properly fastened.

16. A vehicle equipped with a seat belt determination device described in any one of claims 1 to 15.

17. a determining step of determining whether a seat belt fastened to a passenger in a vehicle is fastened correctly; an imaging step of imaging the occupant and outputting a captured image of the occupant; and The determining step determines whether the seat belt is correctly fastened based on at least one of a first angle of the seat belt toward a shoulder anchor and a second angle of the seat belt toward a buckle; the determining step determines whether the seat belt worn by the occupant is correctly fastened by comparing the at least one of the first angle and the second angle obtained from the captured image with the at least one of the first angle and the second angle of a reference image. Seat belt determination method.

18. A determination step of determining whether a seat belt fastened to an occupant of a vehicle is fastened correctly; a detection step of detecting a first angle by a first detection portion provided in a shoulder anchor of the seat belt; and The determining step determines whether the seat belt is properly fastened based on at least one of the first angle of the seat belt toward the shoulder anchor and the second angle of the seat belt toward the buckle. The determining step determines whether the seat belt is properly fastened based on the detection result of the first detection unit. Seat belt determination method.

19. A determination step for determining whether a seat belt fastened to a passenger in a moving body is fastened correctly, The determining step determines whether the seat belt is correctly fastened based on at least one of a first angle of the seat belt toward a shoulder anchor and a second angle of the seat belt toward a buckle; The determining step determines that the seat belt is correctly fastened when the first angle is within a predetermined first range. Seat belt determination method.

20. A determination step for determining whether a seat belt fastened to a passenger in a moving body is fastened correctly, The determining step determines whether the seat belt is correctly fastened based on at least one of a first angle of the seat belt toward a shoulder anchor and a second angle of the seat belt toward a buckle; The determining step determines that the seat belt is correctly fastened when the second angle is within a predetermined second range. Seat belt determination method.

21. A determination step for determining whether a seat belt fastened to a passenger in a moving body is fastened correctly, The determining step determines whether the seat belt is correctly fastened based on at least one of a first angle of the seat belt toward a shoulder anchor and a second angle of the seat belt toward a buckle; The determining step determines that the seat belt is correctly fastened when the first angle is within a predetermined first range and the second angle is within a predetermined second range. Seat belt determination method.

22. On the computer, a determination step for determining whether a seat belt fastened to a passenger in a vehicle is fastened correctly; an acquisition step of acquiring an image of the occupant by capturing an image of the occupant; A seat belt determination program for executing The determination step determines whether the seat belt is correctly fastened based on at least one of a first angle of the seat belt toward a shoulder anchor and a second angle of the seat belt toward a buckle; the determination step includes determining whether or not the seat belt worn by the occupant is correctly fastened by comparing the at least one of the first angle and the second angle obtained from the captured image with the at least one of the first angle and the second angle of a reference image. Seatbelt detection program.

23. A computer comprising: a determination step for determining whether a seat belt fastened to a passenger in a vehicle is fastened correctly; an acquisition step of acquiring a first angle detected by a first detection unit provided in a shoulder anchor of the seat belt; A seat belt determination program for executing The determining step determines whether the seat belt is properly fastened based on at least one of the first angle of the seat belt toward the shoulder anchor and the second angle of the seat belt toward the buckle. the determination step determines whether the seat belt is properly fastened based on a detection result of the first detection unit. Seatbelt detection program.

24. A computer comprising: A seat belt determination program for executing a determination procedure for determining whether a seat belt worn by an occupant in a moving body is properly fastened, the program comprising: The determination step determines whether the seat belt is correctly fastened based on at least one of a first angle of the seat belt toward a shoulder anchor and a second angle of the seat belt toward a buckle; The determination step determines that the seat belt is correctly fastened when the first angle is within a predetermined first range. Seatbelt detection program.

25. A computer comprising: A seat belt determination program for executing a determination procedure for determining whether a seat belt worn by an occupant in a moving body is properly fastened, the program comprising: The determination step determines whether the seat belt is correctly fastened based on at least one of a first angle of the seat belt toward a shoulder anchor and a second angle of the seat belt toward a buckle; The determination step determines that the seat belt is correctly fastened when the second angle is within a predetermined second range. Seatbelt detection program.

26. A computer comprising: A seat belt determination program for executing a determination procedure for determining whether a seat belt worn by an occupant in a moving body is properly fastened, the program comprising: The determination step determines whether the seat belt is correctly fastened based on at least one of a first angle of the seat belt toward a shoulder anchor and a second angle of the seat belt toward a buckle; the determination step determines that the seat belt is correctly fastened when the first angle is within a predetermined first range and the second angle is within a predetermined second range. Seatbelt detection program.

Images