Vehicle system and information reading method

Abstract

A vehicle-oriented system (1), which uses an information provision region (11) provided on a plane on which a vehicle (5) travels, provides information to the vehicle (5), and can provide information by a magnetic method, regardless of the direction of travel of the vehicle (5), as a result of: having magnetic distribution formed in the information provision region (11), said magnetic distribution indicating information by using a plurality of N-pole magnetic markers (10N); and having a marker (100) for identifying the position and direction of the information provision region (11), provided in the information provision region (11).

Description

[Technical Field]

[0001] The present invention relates to a vehicle system capable of providing information to a vehicle using a magnetic marker, and to an information reading method in the vehicle system. [Background technology]

[0002] Conventionally, magnetic markers that are placed on roads for vehicles have been known (see, for example, Patent Document 1). Magnetic markers can be detected, for example, by using a magnetic sensor attached to a vehicle. For example, by using magnetic markers placed along lanes, various driving assistance functions such as automatic steering control and lane departure warning can be realized, as well as autonomous driving.

[0003] A single magnetic marker cannot provide much information to a vehicle. Therefore, a system has been proposed that uses multiple magnetic markers to provide information to a vehicle (see, for example, Patent Document 2). In this system, information is represented by the combination of magnetic polarities of magnetic markers arranged along a lane. When a vehicle is traveling along a lane where magnetic markers are arranged, the vehicle can read the information by detecting the magnetic polarities of the magnetic markers in order and identifying the combination of magnetic polarities. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2018-010356 [Patent Document 2] Japanese Patent Application Laid-Open No. 2003-109173 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the above system has a problem in that the information cannot be read unless the vehicle travels along the route on which the magnetic markers are placed.

[0006] The present invention has been made in consideration of the above-mentioned problems of the conventional art, and aims to provide a system or method for providing information by magnetic means, which is a system for vehicles and an information reading method that can provide information regardless of the direction of travel of the vehicle. [Means for solving the problem]

[0007] One aspect of the present invention is a system for a vehicle that provides information to the vehicle by using an information provision area provided on a plane on which the vehicle moves, The vehicle system is characterized in that a magnetic distribution representing the information is formed in the information provision area, and a sign is provided that can identify the position and orientation of the information provision area.

[0008] One aspect of the present invention is a method for reading information from an information providing area provided on a plane on which a vehicle moves, the method comprising: In the information provision area, a magnetic distribution representing the information is formed, and a sign that can identify the position and orientation of the information provision area is attached, When a vehicle passes through the information provision area, a magnetic distribution in the information provision area is acquired, and the direction of the information provision area is identified by detecting the sign; The information reading method identifies and reads information represented by the acquired magnetic distribution according to the orientation of the identified information providing area. [Effects of the Invention]

[0009] The information provision area according to the present invention is an area in which a magnetic distribution representing the information is formed. This information provision area is provided with a sign that allows the position and orientation of the information provision area to be identified. This sign allows the position of the information provision area to be identified, and also allows the direction of entry of the vehicle into the information provision area to be identified. This allows the vehicle to read the information represented by the information provision area with high reliability. [Brief explanation of the drawings]

[0010] [Figure 1]FIG. 1 is an explanatory diagram of a vehicle system according to a first embodiment. [Figure 2] FIG. 3 is an explanatory diagram of an information provision area in the first embodiment. [Figure 3] FIG. 2 is a diagram showing a magnetic marker in the first embodiment. [Figure 4] FIG. 2 is a block diagram showing a system configuration on the vehicle side in the first embodiment. [Figure 5] FIG. 4 is a flowchart showing the procedure of information reading processing in the first embodiment. [Figure 6] FIG. 10 is an explanatory diagram of another information providing area in the first embodiment. [Figure 7] FIG. 4 is a block diagram showing another system configuration on the vehicle side in the first embodiment. [Figure 8] FIG. 10 is an explanatory diagram of another information providing area in the first embodiment. [Figure 9] FIG. 10 is an explanatory diagram of another information providing area in the first embodiment. [Figure 10] FIG. 10 is an explanatory diagram of another information providing area in the first embodiment. [Figure 11] FIG. 10 is a perspective view showing a roll body around which a sheet to be attached that forms an information providing area is wound in the second embodiment. [Figure 12] FIG. 10 is a diagram illustrating a lane in which an adhesive sheet forming an information provision area is installed in Example 2. [Figure 13] FIG. 10 is an explanatory diagram of another construction method for the information provision area in the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] The embodiments of the present invention will be specifically described using the following examples. Example 1 This example relates to a vehicle system 1 that provides information to a vehicle 5 by a magnetic method. The details of this example will be described with reference to FIGS.

[0012] The vehicle system 1 (FIG. 1) is a system that provides information to the vehicle 5 by using an information provision area 11 provided on a plane on which the vehicle 5 moves. In this example, the plane on which the vehicle 5 moves is assumed to be a paved surface such as a container yard at a port or a ramp area at an airport. The vehicle 5 is assumed to be a vehicle that performs work in a container yard, ramp area, or the like. These areas differ from ordinary roads in that they are open spaces. In container yards, ramp areas, and the like, each vehicle moves with a high degree of freedom while avoiding other vehicles, airplanes, and people. In these open spaces, the direction in which the vehicle 5 moves varies, and the direction in which the vehicle 5 approaches the information provision area 11 is uncertain.

[0013] In the vehicle system 1, information provision areas 11 are arranged two-dimensionally to form grid points on the paved surface of a container yard, ramp area, or the like. When a vehicle 5 passes through the information provision area 11, it can read information regardless of the direction of approach to the information provision area 11. The information includes various types of information such as information indicating attributes of the work location, position information, and warning information. Examples of attributes of the work location include a loading location and a loading delivery location.

[0014] In the information provision area 11 (Fig. 2), magnetic markers 10, which are an example of a magnetic source, are placed to form a magnetic distribution. The information provision area 11 is a square area (an example of a rectangular shape) that is 1 m long and 1 m wide. This square information provision area 11 is divided into nine 3 x 3 sections 110. Each section 110, which is approximately 33 cm x 33 cm in size, is an area for placing a magnetic marker 10.

[0015] The magnetic marker 10 (Figure 3) is a flat, individual marker with a diameter of 100 mm and a thickness of 2 mm. This magnetic marker 10 is made of a circular magnetic sheet 101. The magnetic sheet 101 is an isotropic ferrite rubber magnet with a maximum energy product (BHmax) of approximately 6.4 kJ / m3. One of the front and back surfaces of the magnetic marker 10 forms a north pole, and the other surface forms a south pole. When the magnetic marker 10 is installed, the magnetic polarity that can be detected on the vehicle 5 side will be reversed, either north or south, depending on which surface faces upward.

[0016] In the following description, a magnetic marker 10 that is arranged with its north pole facing upward and that can be detected as a north pole on the vehicle 5 side will be referred to as an north pole magnetic marker 10N (see Figure 2) as appropriate. Also, a magnetic marker 10 that is arranged with its south pole facing upward and that can be detected as a south pole on the vehicle 5 side will be referred to as an south pole magnetic marker 10S as appropriate. In the information provision area 11 of Figure 2, the north pole magnetic marker 10N is used to provide information to the vehicle 5 side. The south pole magnetic marker 10S forms a sign 100 that can identify the position and orientation of the information provision area 11.

[0017] In the vehicle system 1, any number of north-pole magnetic markers 10N, including zero, are arranged two-dimensionally in an information provision area 11 (FIG. 2), which is a two-dimensional area, and information is expressed by the arrangement pattern. The signs 100 are south-pole magnetic markers 10S arranged in three of the four sections 110 that form the corners of the square-shaped information provision area 11. In the information provision area 11, six sections 110, excluding the three sections 110 where the south-pole magnetic markers 10S are arranged, are available for providing information.

[0018] Here, the system configuration on the vehicle 5 side that uses the vehicle-oriented system 1 will be described with reference to Fig. 4. The system on the vehicle 5 side includes a sensor array 51 including a plurality of magnetic sensors 510, a control unit 55 that controls the sensor array 51, a database 550 that stores information represented by each arrangement pattern of the magnetic markers 10N, and the like.

[0019] The sensor array 51 is a rod-shaped unit including a plurality of magnetic sensors 510 and a detection processing circuit 512 that processes magnetic measurement values ​​of each magnetic sensor 510. In the rod-shaped sensor array 51, for example, 15 magnetic sensors 510 are arranged in a straight line at regular intervals. The sensor array 51 is attached to the vehicle 5 so that its longitudinal direction is aligned with the vehicle width direction.

[0020] The magnetic measurement values ​​obtained by each magnetic sensor 510 of the sensor array 51 at the same time form a one-dimensional magnetic distribution along the vehicle width direction. The sensor array 51 outputs this one-dimensional magnetic distribution at a frequency of 3 kHz. When the measurement values ​​constituting the one-dimensional magnetic distribution exceed a predetermined threshold, the sensor array 51 outputs a detection signal indicating that the magnetic marker 10 has been detected.

[0021] The magnetic sensor 510 is, for example, a highly sensitive MI (Magneto Impedance) sensor. The MI sensor has a linear amorphous wire as a magnetically sensitive body and can measure the direction and magnitude of the magnetic field acting along this amorphous wire. In this example, the magnetic sensors 510 are assembled to the sensor array 51, and the sensor array 51 is attached to the vehicle 5 so as to be able to measure the magnitude of the magnetic field acting in the vertical direction. The one-dimensional magnetic distribution output by the sensor array 51 is a distribution along the vehicle width direction of magnetic measurement values ​​along the vertical direction.

[0022] The database 550 (FIG. 4) is realized by utilizing the storage area of ​​a storage device such as a hard disk drive or a solid state drive. The database 550 stores information corresponding to each arrangement pattern of the N-pole magnetic markers 10N. By referring to the database 550 using the arrangement pattern of the N-pole magnetic markers 10N, it is possible to identify the corresponding information.

[0023] The control unit 55 (Figure 4) is a unit that controls the sensor array 51 and reads out the information represented by the information provision area 11 from the database 550. The control unit 55 acquires the one-dimensional magnetic distribution periodically output by the sensor array 51 and stores it sequentially in a storage area (not shown). The control unit 55 stores one-dimensional magnetic distributions over a predetermined time in the past. When storing a new one-dimensional magnetic distribution, the control unit 55 erases the oldest one-dimensional magnetic distribution at the time of storage. The control unit 55 stacks one-dimensional magnetic distributions along the direction in which the vehicle 5 is traveling, thereby forming a two-dimensional magnetic distribution whose width is the length of the sensor array 51 and whose vertical dimension is the distance traveled by the vehicle 5 over a predetermined time in the past.

[0024] In this example, the predetermined time for storing the one-dimensional magnetic distribution is set to the time required for the vehicle 5 to travel a predetermined distance. Therefore, the faster the speed of the vehicle 5, the shorter the predetermined time, and the slower the speed, the longer the predetermined time. As a result, the vertical dimension of the two-dimensional magnetic distribution formed by the control unit 55 can be constant regardless of the speed of the vehicle 5. In this example, the vertical dimension of the two-dimensional magnetic distribution is set so as to cover the information provision area 11 having a size of 1 m x 1 m.

[0025] The control unit 55 processes the two-dimensional magnetic distribution to identify the arrangement of the magnetic markers 10 in the information provision area 11. The control unit 55 identifies the arrangement of the north pole magnetic markers 10N and the arrangement of the south pole magnetic markers 10S. The position and orientation of the information provision area 11 can be identified based on the three south pole magnetic markers 10S that are the sign 100. Furthermore, the arrangement pattern of the north pole magnetic markers 10N can identify the information represented by the information provision area 11.

[0026] The processing executed by the control unit 55 will now be described with reference to the flow diagram of Fig. 5. When the control unit 55 receives a detection signal of the magnetic marker 10 from the sensor array 51 (S101: YES), it reads from a storage area (not shown) a two-dimensional magnetic distribution based on the one-dimensional magnetic distribution acquired by the sensor array 51 (S102). Then, the control unit 55 processes the two-dimensional magnetic distribution to detect and identify the positions of the south and north pole magnetic markers 10 (S103).

[0027] Next, the control unit 55 determines the position and orientation of the information provision area 11 based on the arrangement of the S-pole magnetic markers 10S (S104). The control unit 55 determines the central section 110 of the nine sections 110 of the information provision area 11, i.e., the central position of the information provision area 11, as the position of the information provision area 11. Specifically, the control unit 55 determines two sides of the information provision area 11 using the S-pole magnetic markers 10S located at three corners, thereby determining the central position of the information provision area 11. Furthermore, the control unit 55 determines the position and orientation of the information provision area 11 based on the arrangement of the S-pole magnetic markers 10S located at the three corners.

[0028] The control unit 55 identifies the arrangement pattern of the N-pole magnetic markers 10N in the information provision area 11 whose position and orientation have been identified (S105). Then, the control unit 55 refers to the database 550 using the arrangement pattern of the N-pole magnetic markers 10N (S106) and identifies information corresponding to the arrangement pattern of the N-pole magnetic markers 10N (S107). The control unit 55 reads information from the information provision area 11 using the above procedure.

[0029] In the vehicle system 1, south pole magnetic markers 10S arranged at three corners of a square-shaped information provision area 11 constitute signs 100 for identifying the position and orientation of the information provision area 11. In the vehicle system 1, the position and orientation of the information provision area 11 can be identified using these signs 100, which makes it possible to uniquely identify the arrangement pattern of the north pole magnetic markers 10N. If the arrangement pattern of the north pole magnetic markers 10N can be uniquely identified, each vehicle 5 that arrives at the information provision area 11 can read the information with high reliability, regardless of the direction of approach into the information provision area 11.

[0030] In this example, a configuration has been described in which a database 550 that stores information represented by the information provision area 11 is provided in each vehicle 5. Instead of this configuration, a database may be provided in a server device with which the vehicle 5 can communicate. In this case, the information provided to the vehicle can be changed at any time by rewriting the information in the database.

[0031] Instead of this example, it is also possible to configure the vehicle 5 to be able to read different information depending on the direction of entry into the information provision area 11. In the configuration of this example, the position and orientation of the information provision area 11 can be identified on the vehicle 5 side. Therefore, the information to be provided can be changed depending on the direction in which the vehicle 5 passes through the information provision area 11. For example, when applied to a route where the traveling direction is specified in one direction, it is advisable to change the information to be provided depending on the traveling direction of the vehicle 5. For example, it is possible to provide information such as the speed limit to vehicles traveling normally on the route, while providing information that a vehicle traveling in the wrong direction is traveling in the wrong direction.

[0032] In this example, the flat surface on which the vehicle 5 travels is exemplified by a paved surface that forms a container yard at a port or a ramp area at an airport. The vehicle system 1 may also be applied to roads on which general vehicles travel.

[0033] In this example, an example of the sign 100 is a sign with magnetic markers 10S with south poles at three corners. Instead of the south pole magnetic markers 10S, double circles 114, as illustrated in FIG. 6, may be printed or otherwise provided. For example, by employing the vehicle 5 system shown in FIG. 7 including a road surface camera 57 that captures images of the pavement surface, information can be read from the information provision area 11 shown in FIG. 6. According to the system shown in FIG. 7, the sensor array 51 detects the magnetic markers 10N, and the road surface camera 57 detects the double circles 114. The control unit 55 can identify the position and orientation of the information provision area 11 based on the arrangement of the double circles 114 and read information based on the arrangement pattern of the magnetic markers 10N. When such a configuration is adopted, the north pole magnetic markers 10N may be arranged so that the double circles 114 constituting the sign 100 overlap. When the signs 100 are arranged in this manner, all nine sections 110 constituting the information provision area 11 can be used to display information. Furthermore, in this case, it becomes possible to use the S-pole magnetic marker 10S to express information. By combining the N-pole magnetic marker 10N and the S-pole magnetic marker 10S, the amount of information that can be provided to the vehicle side can be increased.

[0034] The pictorial (visual) sign 100 may have various shapes, such as a square or a triangle, instead of a double circle, as long as it is visually identifiable. Furthermore, the sign may be a combination of multiple shapes, such as a double circle and a square. A visually identifiable shape may be, for example, a reflective material or a coating made of reflective paint, which becomes apparent when light is irradiated onto it. The visual shape may be located within the information provision area 11, or may be located outside the information provision area 11. For example, the visual shape may be located outside the information provision area 11 so as to be adjacent to the three corners (vertices) of the information provision area.

[0035] As shown in FIG. 8, L-shaped paint 112 may be provided as the sign 100 along two sides of the information provision area 11. In this way, the sign 100 may be arranged on the outer periphery of the information provision area 11. Also, as shown in FIG. 9, the sign 100 may be a combination of a printed frame 116 surrounding the information provision area 11 (an example of a visual sign that can be detected in a captured image of the information provision area 11) and a magnetic marker 10S with an S pole at one corner (an example of a magnetic sign that can be magnetically detected). In other words, the sign 100 may be identifiable by a combination of a magnetic method and an image method. The S pole magnetic marker 10S in FIG. 9 may be replaced with a printed double circle.

[0036] In this example, circular magnetic markers 10 are placed in the nine sections 110 of the information provision area 11. The shape of the magnetic markers can be changed as appropriate. Furthermore, magnetic markers of the same size as each section 110 may be used. The size and shape of the information providing area 11 and the number of sections 110 are not limited to the configuration of this example and can be changed as appropriate.

[0037] The information provision area may also be formed using a rubber sheet (an example of a sheet body) made of a material in which magnetic powder is mixed into a rubber material. In this case, each position on the rubber sheet may be magnetized to form a predetermined magnetic distribution. The magnetic distribution may be, for example, a distribution that simulates the arrangement of magnetic markers 10 (see FIG. 2). Alternatively, the information provision area may not be divided into sections (reference numeral 110 in FIG. 2), but may instead be a magnetic distribution in which the magnetic intensity changes continuously to exhibit a predetermined fluctuation. The continuously changing magnetic distribution can serve as a marker for identifying the position and orientation of the information provision area 11. Furthermore, magnetic singularities created by magnetic markers may be set within the continuously changing magnetic distribution. The magnetic singularities created by magnetic markers are useful for improving the accuracy of identifying the position and orientation of the information provision area 11.

[0038] Although a sheet-shaped magnetic marker is used in this example, a cylindrical piece-shaped magnetic marker made of, for example, a plastic magnet may also be used. In the case of a cylindrical magnetic marker, it is preferable to embed it in the road surface by placing it in a hole drilled in the road surface. 1 and 2, the boundaries of the sections 110 that form the information provision area 11 are clearly indicated by lines. The boundaries of the sections 110 may be virtual boundaries, and it is not essential to indicate the boundaries with lines.

[0039] In this example, as the sign 100 that can identify the position and orientation of the information provision area 11, magnetic markers 10S with south poles arranged at three corners of the square-shaped information provision area 11 are shown. For example, magnetic markers 10S with south poles arranged at three diagonal positions of the square-shaped information provision area 11 may also be used as the sign 100. The magnetic markers 10S with south poles for the sign 100 may be arranged in any manner as long as the position and orientation of the information provision area 11 can be identified.

[0040] In this example, a magnetic marker 10S with an S pole is illustrated as the magnetic marker 10 for the sign 100, and a magnetic marker 10N with an N pole is illustrated as the magnetic marker 10 for providing information. The S pole magnetic marker 10S and the N pole magnetic marker 10N may be reversed. Alternatively, the sign 100 may be a combination of a S pole magnetic marker 10S and a N pole magnetic marker 10N, and information may be displayed using a similar combination. For example, as shown in FIG. 10 , magnetic markers 10 for the sign 100 may be arranged in four corner sections 110 of a square information provision area 11, and magnetic markers 10 for providing information may be arranged in the remaining sections. For example, the magnetic markers 10 for the sign 100 may be a combination of a N pole magnetic marker 10N in one location and S pole magnetic markers 10S in the other three locations. The magnetic marker 10 for providing information may be a combination of a north pole magnetic marker 10N and a south pole magnetic marker 10S, as shown in the figure. Alternatively, information may be provided by arranging magnetic markers 10 of either one type of magnetic polarity.

[0041] In this example, a square-shaped area is illustrated as the information providing area 11, but the shape of the information providing area 11 is not limited to a square. Various shapes such as a triangle, a pentagon, a hexagon, a circle, an ellipse, or a diamond can be used.

[0042] Example 2 This example is an example in which the method of forming the information provision area 11 is changed based on the vehicle system 1 of the first embodiment. This will be described with reference to FIGS. In Example 1, an information provision area (reference numeral 11 in FIG. 2) is provided on the pavement surface, and magnetic markers 10 are placed in each section (reference numeral 110 in the same figure) of the information provision area 11. Instead, in this example, a square adhesive sheet 11S (an example of a sheet body) that forms the information provision area 11 is prepared, and the sheet 11S is attached to the pavement surface. The adhesive sheet 11S is a sheet in which magnetic markers 10 are bonded to the surface of a base sheet 118. The base sheet 118 is, for example, a sheet in which molten asphalt (an example of a paving material for pavement surfaces) is impregnated into a glass fiber fabric.

[0043] In the adhesive sheet 11S, S-pole magnetic markers 10S forming the sign 100 are arranged at three corners, and N-pole magnetic markers 10N are arranged in a predetermined arrangement pattern. It is also possible to use a roll 11R in which a continuous sheet of multiple adhesive sheets 11S is wound up. The roll 11R makes it easy to store and transport multiple adhesive sheets 11S. The adhesive sheet 11S can be obtained by unwinding the leading edge of the continuous sheet from the roll 11R and cutting it at a predetermined position. The process of cutting and cutting out the adhesive sheet 11S individually may be performed when the adhesive sheet 11S is installed, or may be performed in advance at a factory, etc.

[0044] When applying the sheet 11S, it is also possible to heat the asphalt impregnated in the base sheet 118 so that it melts or softens, allowing the asphalt to function as an adhesive material. Alternatively, the asphalt that forms the pavement surface may be heated in advance, and then the adhesive sheet 11S may be placed on the pavement surface. In this case, the heat from the pavement surface can heat and melt or soften the asphalt in the adhesive sheet 11S, allowing the sheet 11S to adhere.

[0045] In the information provision area 11 formed by attaching the adhesive sheet 11S, the south pole magnetic markers 10S arranged at three corners serve as signs 100 for identifying the position and orientation of the information provision area 11. Therefore, when attaching the adhesive sheet 11S, it is not necessary to align the sheet 11S in a specific direction. Furthermore, because the position of the information provision area 11 can be identified by the signs 100, there is little need for alignment when attaching the sheet 11S. If there is little need for alignment of the sheet 11S and no need to align the orientation of the sheet 11S, the adhesive sheet 11S can be installed with high workability, and the information provision area 11 can be formed efficiently. For example, as shown in FIG. 12 , when providing the information provision area 11 in a lane 500 on which ordinary vehicles travel, the orientation of the adhesive sheet 11S may vary. The position where the sheet 11S is attached may also be approximate.

[0046] 13, a holding sheet 119 such as a silicone sheet or polyethylene film may be used instead of the base sheet 118. Holding sheets 119 such as silicone sheets or polyethylene films are less susceptible to adhesive forces from adhesive materials and are relatively easy to peel off.

[0047] A retaining sheet 119 with magnetic markers 10 attached can be prepared, and the retaining sheet 119 can be pressed against a pavement surface coated with adhesive, with the magnetic markers 10 facing inward. The retaining sheet 119 can then be peeled off, leaving the magnetic markers 10 transferred to and adhered to the pavement surface. Peeling off the retaining sheet 119 creates an information provision area 11 similar to that in Example 1. The other configurations and effects are the same as those of the first embodiment.

[0048] Although specific examples of the present invention have been described in detail as examples, these examples merely disclose examples of the technology encompassed by the claims. Needless to say, the scope of the claims should not be interpreted as being limited by the configurations, numerical values, etc. of the specific examples. The claims encompass technologies that are obtained by variously modifying, changing, or appropriately combining the specific examples using publicly known technology and the knowledge of those skilled in the art. [Explanation of symbols]

[0049] 1. Vehicle systems 10 Magnetic Markers 10N North Pole Magnetic Marker 10S South pole magnetic marker 101 Magnetic Sheet 100 signs 11 Information provision area 110 plots 5 vehicles 500 lanes 51 Sensor Array 510 Magnetic Sensor 512 detection processing circuit 55 Control Unit 550 databases 57 Road surface camera

Claims

1. A system for a vehicle that provides information to the vehicle side by using an information providing area provided on a plane on which the vehicle moves, In the information provision area, a magnetic distribution representing the information is formed, and a marker capable of identifying the position and orientation of the information provision area is provided, the marker being an external marker that can be detected by applying image processing to a captured image of the information provision area; a circuit for identifying the position and orientation of the information provision area by detecting the marker through image processing of the captured image of the information provision area; a circuit for acquiring a magnetic distribution of the information providing area; a circuit that identifies and reads information represented by the magnetic distribution acquired by the circuit that acquires the magnetic distribution, in accordance with the position and orientation of the information providing area identified by the circuit that identifies the position and orientation.

2. A system for a vehicle that provides information to the vehicle side by using an information providing area provided on a plane on which the vehicle moves, In the information provision area, a magnetic distribution representing the information is formed, and a marker capable of identifying the position and orientation of the information provision area is provided, the marker being an external marker that can be detected by applying image processing to a captured image of the information provision area; the magnetic distribution is formed by arranging at least one individual magnetic marker in the information providing area, A system for a vehicle, wherein the magnetic marker placed in the information providing area can be positioned so that the sign overlaps.

3. In claim 2, a database that stores information corresponding to each arrangement pattern among multiple types of arrangement patterns of magnetic markers in the information provision area; a circuit for acquiring a magnetic distribution of the information providing area; a circuit for identifying the position and orientation of the information provision area by detecting the marker through image processing of the captured image of the information provision area; a circuit for identifying an arrangement pattern of magnetic markers in the information provision area from the magnetic distribution acquired by the circuit for acquiring the magnetic distribution, in accordance with the position and orientation of the information provision area identified by the circuit for identifying the position and orientation; and a circuit that acquires information corresponding to the identified arrangement pattern of the magnetic markers by referring to the database.

4. According to claim 2, the information provision area is a rectangular two-dimensional area in which the magnetic markers are arranged two-dimensionally, the signs are external signs arranged at three of four corners of the rectangular two-dimensional area, A system for a vehicle, wherein when a magnetic marker is placed at any of the three locations, the magnetic marker is placed so that the sign overlaps.

5. 2. The information providing area according to claim 1, wherein the information providing area is an area formed by placing a sheet made of a material mixed with magnetic powder on the plane, A system for a vehicle, wherein the magnetic distribution is a magnetic distribution obtained by magnetizing the sheet body.

6. 3. The vehicle system according to claim 2, wherein the information provision area is an area formed by arranging a sheet body, on the plane, the sheet body having at least one individual magnetic marker arranged on the surface of a base sheet.

7. 7. The vehicle system according to claim 5, wherein the sheet body is cut out from a continuous sheet from which a plurality of sheet bodies can be cut out.

8. In claim 1 or 2, the information provision area is formed by transferring at least one individual magnetic marker from a holding sheet having the at least one individual magnetic marker arranged on the surface to the surface of the holding sheet.

9. In claim 1 or 2, the magnetic distribution is a distribution in which the magnetic strength changes continuously, and in the information provision area, at least one individual magnetic marker is arranged as a magnetic singularity in the magnetic distribution, a system for vehicles.

10. 3. The vehicle system according to claim 1, wherein the signs are arranged on the outer periphery of the information providing area.

11. 3. The vehicle system according to claim 1, wherein the signs are a combination of magnetic signs that are magnetically detectable and visual signs that are detectable in a captured image of the information provision area.

12. 1. A method for reading information from an information providing area provided on a plane on which a vehicle moves, comprising: In the information provision area, a magnetic distribution representing the information is formed, and a marker capable of identifying the position and orientation of the information provision area is attached, the marker being an external marker that can be detected in a captured image of the information provision area; the magnetic distribution is formed by arranging at least one individual magnetic marker in the information providing area, Each magnetic marker arranged in the information provision area is configured so that the signs can be arranged to overlap each other, When a vehicle passes through the information provision area, a magnetic distribution in the information provision area is acquired, and the sign is detected to identify the position and orientation of the information provision area; An information reading method for identifying and reading information represented by the acquired magnetic distribution according to the position and orientation of the identified information providing area.

13. 13. The information reading method according to claim 12, wherein the orientation of the information providing area is identified by detecting the sign through image processing of the captured image of the information providing area.

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