JP2009129035A - Own-vehicle location detection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an own-vehicle location detection device for alleviating a user from feeling that an azimuth is made different due to a coordinate error (a feeling of un-matching of an azimuth). <P>SOLUTION: A portable unit 1 calculates the direction of an own-vehicle from coordinate locations by communication from the own-vehicle, and displays the direction of the own-vehicle at a display part 18 to guide a user to the own-vehicle, wherein the display part 18 is provided with first display 401 to seventh display 407 in A direction to H direction wherein directional expressions showing the direction of the own-vehicle and the expressions of a feeling of distance to the own-vehicle location are integrated. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention belongs to the technical field of a portable device own vehicle position detection device in which a person having a portable device that communicates with an in-vehicle device mounted on a vehicle detects the position of the own vehicle.

Conventionally, the parking position of the own vehicle is detected using GPS, and the positional relationship between the current position and the parking position is indicated by an arrow on the display unit of the portable detection device (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 6-84092 (page 2-4, full view)

  However, in the past, in locations where GPS signal conditions are not good, the error in coordinate measurement values is large, and the accuracy of the azimuth deteriorates as the distance between the vehicle and the vehicle shortens. It sometimes showed a different direction.

  The present invention has been made paying attention to the above-mentioned problems, and the object of the present invention is to make the user feel that the orientation is different due to the coordinate error (direction unmatched feeling). The object is to provide a vehicle position detection device.

  In order to achieve the above object, in the present invention, in the own vehicle position detection device for detecting the direction of the own vehicle and displaying the direction of the own vehicle with the display means, the display means includes a directivity expression indicating the direction of the own vehicle. It has a display that integrates the expression of the sense of distance to the vehicle position.

  Therefore, in the present invention, it is possible to reduce the feeling that the user feels that the direction is different due to the GPS error (direction unmatched feeling).

  Hereinafter, an embodiment for realizing the own vehicle position detection device of the present invention will be described based on Example 1 corresponding to the invention according to claims 1 to 9.

First, the configuration will be described.
FIG. 1 is a diagram illustrating a block configuration of a portable device that is a vehicle position detection device according to a first embodiment and a vehicle-side device.
The own vehicle position detection device according to the first embodiment is a portable device 1 used in a keyless system and performs communication with a vehicle side device.
The portable device 1 includes a CPU 11, a memory 12, a geomagnetic sensor 13, a GPS communication unit 14, a GPS antenna 15, a wireless communication unit 16, an antenna 17, and a display unit 18.

The CPU 11 stores and reads data in the memory 12, inputs detection values from the geomagnetic sensor 13, inputs communication commands and GPS data to the GPS communication unit 14, outputs display data to the display unit 18, and wireless communication unit 16 performs transmission output and reception processing.
In addition, the CPU 11 acquires the current position of the portable device 1 in GPS coordinates, calculates the relative position of the own vehicle position read from the memory 12, and the distance from the own vehicle position and the relative position of both The process which displays the direction of the own vehicle calculated from is performed. In addition, as the processing of the portable device 1 of the keyless system, processing such as ID transmission is performed.

The memory 12 stores the vehicle position data and outputs it as necessary. In addition, it stores data that needs to be stored such as an ID in a keyless system, and outputs it as necessary.
The geomagnetic sensor 13 performs azimuth detection by geomagnetism and outputs the detection result to the CPU 11.

The GPS communication unit 14 receives radio waves from a plurality of GPS satellites using the GPS antenna 15, acquires GPS data, and outputs the GPS data to the CPU 11.
The GPS antenna 15 is an antenna that receives GPS radio waves.
The wireless communication unit 16 performs communication for receiving the vehicle position information from the in-vehicle device 2 to display the relative position between the vehicle position and the current position of the portable device 1, and outputs the received information to the CPU 11.
Moreover, the wireless communication part 16 communicates transmission / reception of ID information etc. with the vehicle equipment 2 as a process of a keyless system.

The antenna 17 is an antenna for the wireless communication unit 16 to perform transmission / reception with the in-vehicle device 2.
The display unit 18 displays the azimuth and distance of the relative position between the vehicle position and the current position of the portable device 1. Details will be described later.

The vehicle-side device includes an in-vehicle device 2 and a GPS communication unit 3.
The in-vehicle device 2 is configured to include a CPU 21, a wireless communication unit 22, and an antenna 23.
CPU21 outputs the command which acquires GPS information to the GPS communication part 3 of the navigation apparatus outside the vehicle equipment 2, for example, and inputs GPS information. In addition, the wireless communication unit 22 inputs and outputs data for transmission and reception with the portable device 1.
The wireless communication unit 22 performs transmission / reception with the portable device 1 using the antenna 23. Transmission data is input from the CPU 21, and reception data is output to the CPU 21.
The antenna 23 is an antenna for the wireless communication unit 22 to transmit and receive with the in-vehicle device 2.

  The GPS communication unit 3 is provided in, for example, a navigation device (navigation device), receives radio waves from a plurality of GPS satellites using the GPS antenna 31, acquires GPS data, and outputs the GPS data to the CPU 21.

FIG. 2 is an explanatory diagram of a display unit of a portable device that is the vehicle position detection device of the first embodiment.
The display unit 18 of the portable device 1 has a configuration for performing the display shown in FIG.
The display surface 100 of the display unit 18 is first provided with a circular center unit 200 at the center. Then, four concentric annular bodies are provided from the circular center portion 200 to the outer circumferential direction, and further divided into eight directions centering on the center portion 200, that is, from the A direction to the H direction.
For the sake of explanation, the light-emitting display portion is shown by hatching in FIG.

Thus, the first arc portion 101a, the second arc portion 102a, the third arc portion 103a, and the fourth arc portion 104a are arranged in the A direction from the center portion 200 toward the outer peripheral direction.
Next, a first arc portion 101b, a second arc portion 102b, a third arc portion 103b, and a fourth arc portion 104b are arranged in the B direction from the center portion 200 toward the outer peripheral direction.
Next, a first arc portion 101c, a second arc portion 102c, a third arc portion 103c, and a fourth arc portion 104c are arranged in the C direction from the center portion 200 toward the outer peripheral direction.
Next, a first arc portion 101d, a second arc portion 102d, a third arc portion 103d, and a fourth arc portion 104d are arranged in the D direction from the center portion 200 in the outer peripheral direction.

Next, a first arc portion 101e, a second arc portion 102e, a third arc portion 103e, and a fourth arc portion 104e are arranged in the E direction from the center portion 200 toward the outer peripheral direction.
Next, a first arc portion 101f, a second arc portion 102f, a third arc portion 103f, and a fourth arc portion 104f are arranged in the F direction from the center portion 200 toward the outer peripheral direction.
Next, a first arc portion 101g, a second arc portion 102g, a third arc portion 103g, and a fourth arc portion 104g are arranged in the G direction from the center portion 200 in the outer circumferential direction.
Next, a first arc portion 101h, a second arc portion 102h, a third arc portion 103h, and a fourth arc portion 104h are arranged in the H direction from the center portion 200 in the outer peripheral direction.

In this way, on the display surface 100 of the display unit 18, the center part 200 and the first arc part to the fourth arc part are arranged in eight directions, respectively, and 33 display parts by lighting and non-lighting are formed. .
More specifically, the display surface 100 is configured by a light source such as an LED, a filter, a film, and the like inside the display surface 100.
Further, the fourth arc portion may be turned on and off sequentially from the first arc portion by the mechanism.

FIG. 5 is an explanatory diagram of the display pattern, distance, and direction of the display unit of the portable device that is the own vehicle position detection device of the first embodiment. In FIG. 5, for the sake of explanation, the light emitting display portion, that is, the lighting portion is indicated by hatching, and the non-light emitting display portion, that is, the non-lighting portion is indicated by white. Specifically, the background and the non-lighted portion are dark background portions such as black, and the light emitting portion is displayed on the background.
In the display pattern shown in FIG. 5, there are eight directions from the A direction (0 degree direction) to the H direction (315 degree direction) with respect to the direction from the current position of the portable device 1 shown in the right side of FIG. The data is set and stored as data in the internal memory of the CPU 11 of the portable device 1, the memory 12, or a ROM (not shown).
Then, for each of the eight directions, seven levels of display are set according to the distance between the current position of the portable device 1 and the vehicle position shown in the lower part of FIG. Alternatively, the memory 12 or a ROM (not shown) is provided.

  Further, different values are set in the direction of the right side in FIG. 5 and the distance in the lower side of FIG.

Next, the operation will be described.
[Vehicle position processing in in-vehicle devices]
FIG. 3 is a flowchart showing a flow of processing of the own vehicle position executed by the CPU 21 of the in-vehicle device 2 according to the first embodiment. Each step will be described below.

  In step S1, the CPU 21 of the in-vehicle device 2 determines whether or not the vehicle user is about to get off from the IGN power off or the lock by the remote control, and if so, proceeds to step S2 and does not try to get off. If so, the process ends.

  In step S <b> 2, the CPU 21 of the in-vehicle device 2 controls the wireless communication unit 22 to notify the portable device 1 of the vehicle position. At this time, GPS coordinate data obtained from the GPS communication unit 3 is transmitted to the portable device 1 and the process is terminated.

[Handling of vehicle position on portable devices]
FIG. 4 is a flowchart showing a flow of processing of the vehicle position executed by the CPU 11 of the portable device 1 according to the first embodiment. Each step will be described below.

  In step S <b> 3, the CPU 11 of the portable device 1 stores the GPS coordinate data transmitted from the in-vehicle device 2 as the vehicle position in the memory 12 and ends the process.

[Action to reduce direction unmatch due to GPS error]
FIG. 6 is an explanatory diagram of a state where the vehicle position is detected and displayed in the portable device 1 according to the first embodiment.
In the portable device 1 according to the first embodiment, the in-vehicle device 2 acquires and communicates when getting off the vehicle (steps S1 to S3), and the current position of the portable device 1 acquired by the GPS communication unit 14 of the portable device 1 Compare GPS coordinates. By this comparison, it is calculated in which direction and in which direction the vehicle is located from the current position of the portable device 1.

  And the portable machine 1 corresponds to any of the eight directions from the A direction (0 degree direction) to the H direction (315 degree direction) of the display unit 18 according to the direction information obtained from the geomagnetic sensor 13. Judge whether to do. In other words, the direction of the vehicle is applied to the direction of the portable device 1 obtained from the geomagnetic sensor 13 with respect to the absolute direction. Further, based on this determination, display on the display unit 18 is performed. In addition, when the direction of the portable device 1 exceeds the displayed direction range in the eight directions, the display on the display unit 18 is changed. The display on the display unit 18 is also changed when the distance between the portable device 1 and the vehicle position exceeds the set step range.

Next, the display of the vehicle position will be described more specifically as a display on the display surface 100 of the display unit 18.
In the portable device 1 according to the first embodiment, the distance between the vehicle position and the current position of the portable device 1 is divided into seven steps, and the display is performed in seven steps. This display is performed for each of the eight directions from the A direction (0 degree direction) to the H direction (315 degree direction).

Hereinafter, the A direction (0 degree direction) will be described. First, a range in which the distance between the vehicle position and the current position of the portable device 1 is farthest is set as a first distance range 301.
In the first distance range 301, the center portion 200 emits light weakly, and the first arc portion 101 a, the second arc portion 102 a, the third arc portion 103 a, A display in which the four arc portions 104a are lit is performed. This is a first display 401.

Next, a range in which the distance between the vehicle position and the current position of the portable device 1 is closer than the first distance range 301 is defined as a second distance range 302.
In the second distance range 302, the center portion 200 emits light weakly, and from the center portion 200 toward the outer circumference in the A direction, the first arc portion 101a to the fourth arc portion 104a, and in the B direction, the first arc. In the portion 101b, the first arc portion 101h is displayed in the H direction. This is the second display 402.

Next, a range in which the distance between the vehicle position and the current position of the portable device 1 is closer than the second distance range 302 is defined as a third distance range 303.
In the third distance range 303, the center portion 200 emits light weakly, and from the center portion 200 toward the outer peripheral direction in the A direction, the first arc portion 101a to the fourth arc portion 104a, and the first arc in the B direction. The portion 101b, the second arc portion 102b, the first arc portion 101c in the C direction, the first arc portion 101h in the H direction, the second arc portion 102h, and the first arc portion 101g in the G direction are turned on. . This is a third display 403.

Next, a range in which the distance between the vehicle position and the current position of the portable device 1 is closer than the third distance range 303 is defined as a fourth distance range 304.
In the fourth distance range 304, the center part 200 emits light strongly, and the first arc part 101a to the fourth arc part 104a from the center part 200 toward the outer circumferential direction in the A direction, and the first arc in the B direction. Part 101b to third arc part 103b, the first arc part 101c, the second arc part 102c in the C direction, the first arc part 101d in the D direction, the first arc part 101e in the E direction, and the first arc part 101e in the F direction. The first arc portion 101g, the second arc portion 102g in the G direction, and the first arc portion 101h to the third arc portion 103h in the H direction are turned on. This is a fourth display 404.

Next, a range in which the distance between the vehicle position and the current position of the portable device 1 is closer than the fourth distance range 304 is defined as a fifth distance range 305.
In the fifth distance range 305, the center part 200 emits light strongly, and the first arc part 101a to the fourth arc part 104a from the center part 200 toward the outer peripheral direction in the A direction, and the first arc in the B direction. Part 101b to fourth arc part 104b, first arc part 101c to third arc part 103c in the C direction, first arc part 101d, second arc part 102d in the D direction, and first arc part 101e in the E direction. The second arc portion 102e, the first arc portion 101f, the second arc portion 102f in the F direction, the first arc portion 101g to the third arc portion 103g in the G direction, and the first arc portion 101h to the first arc in the H direction. A display in which the four arc portions 104h are lit is performed. This is designated as a fifth display 405.

Next, a range in which the distance between the vehicle position and the current position of the portable device 1 is closer than the fifth distance range 305 is defined as a sixth distance range 306.
In the sixth distance range 306, the center portion 200 is made to emit light strongly, and from the center portion 200 toward the outer peripheral direction in the A direction, the first arc portion 101a to the fourth arc portion 104a, and the first arc in the B direction. Portion 101b to fourth arc portion 104b, first arc portion 101c to fourth arc portion 104c in the C direction, first arc portion 101d to third arc portion 103d in the D direction, and first arc portion 101e in the E direction. To the third arc portion 103e, the first arc portion 101f to the third arc portion 103f in the F direction, the first arc portion 101g to the fourth arc portion 104g in the G direction, and the first arc portion 101h to the first arc in the H direction. A display in which the four arc portions 104h are lit is performed. This is designated as a sixth display 406.

Next, it is assumed that the distance between the vehicle position and the current position of the portable device 1 is closer to the sixth distance range 306 and the closest distance range is a seventh distance range 307.
In the seventh distance range 307, the center portion 200 emits light strongly, and the first arc portion 101a to the fourth arc portion 104a from the center portion 200 toward the outer circumference in the A direction, and the first arc in the B direction. Part 101b to fourth arc part 104b, first arc part 101c to fourth arc part 104c in the C direction, first arc part 101d to fourth arc part 104d in the D direction, and first arc part 101e in the E direction. To the fourth arc portion 104e, the first arc portion 101f to the fourth arc portion 104f in the F direction, the first arc portion 101g to the fourth arc portion 104g in the G direction, and the first arc portion 101h to the fourth arc in the H direction. A display in which the four arc portions 104h are lit is performed. In other words, this is the seventh display 407 in a state where everything is lit.

  Also in the B direction to the H direction, the first display 401 to the seventh display 407 are obtained by rotating the above-described display in the respective directions with respect to the first distance range 301 to the seventh distance range 307. (See FIG. 5).

The first display 401 to the seventh display 407 of the display unit 18 of the portable device 1 according to the first embodiment integrally perform expression of directivity (direction) and expression of distance.
Furthermore, as the distance between the vehicle position and the current position of the portable device 1 increases, that is, the distance from the first distance range 301 is increased, the expression of directivity is emphasized and the expression of the sense of distance is weakened. As the distance between the position and the current position of the portable device 1 is closer, that is, closer to the seventh distance range 307 side, the expression of the sense of distance is emphasized and the expression of directivity is weakened.

The user of the vehicle having the portable device 1 sees the display on the display unit 18 of the portable device 1 and recognizes that the direction of the own vehicle is the A direction if it indicates the first display 401. , Will move. Here, the display changes from the first display 401, the second display 402, and the third display 403 to the fifth display 405, and it can be seen that the distance is getting closer as the number of lighting portions around the center portion 200 increases. . Also, it is recognized based on the first display 401 and the second display 402 that the direction of the host vehicle is generally the A direction.
Further, when the user of the vehicle having the portable device 1 approaches the host vehicle, the main display is that the distance is approaching. In the sixth display 406 and the seventh display 407, only the distance is displayed. Here, when the user with the portable device 1 approaches the vehicle, the sixth display 406 is 5 m to 14 m and the seventh display 407 is 0 m to 4 m. You should be able to see the car.
As described above, in the portable device 1 according to the first embodiment, when the user wants to be guided to the vehicle position, for example, by forgetting the vehicle position, the user can be sufficiently guided by a display in which directivity and a sense of distance are integrated. .

Further, in the display in which the directivity and the sense of distance are integrated in the display unit 18 of the portable device 1 of the first embodiment, the influence of the GPS position error is taken into consideration.
FIG. 7 is an explanatory diagram of an error position and an angle of the current vehicle position of the current position of the portable device 1 that is the own vehicle position detection device of the first embodiment.
The GPS coordinates acquired by the GPS communication units 3 and 14 have an error range. This is illustrated as an error range 500 in FIG. That is, the acquired GPS coordinates are any coordinate value within the error range 500.

When the distance between the own vehicle position and the current position of the portable device 1 is long as in the first distance range 301 and the second distance range 302, the error range 500 of the own vehicle position and the error range 501 of the portable device 1 are configured. The angle range 600 of the direction to be a small angle range (see FIG. 7A).
In the first embodiment, when the distance between the vehicle position and the current position of the portable device 1 is far, the directivity is mainly used for expression, and therefore the direction of the vehicle position can be clearly recognized.

Next, when the distance between the own vehicle position and the current position of the portable device 1 is slightly closer as in the third distance range 303 to the fifth distance range, the own vehicle position error range 500 and the portable device 1 error range 501 are obtained. The angle range 600 of the direction to constitute becomes a larger angle range as the distance gets closer (see FIG. 7B).
In the first embodiment, as the distance between the host vehicle position and the current position of the portable device 1 becomes shorter, the directivity expression is weakened and the expression of the sense of distance is emphasized. While the display directivity is recognized to inherit the directivity in the first distance range 301 and the second distance range 302, a wide angle is expressed, and the expression of the distance is mainly used, so that the display can be carried in different directions. The user is guided to the host vehicle by indicating the distance while not guiding the user having the machine 1.

Next, when the distance between the vehicle position and the current position of the portable device 1 becomes very close as in the sixth distance range 306 and the seventh distance range 307, the error range 500 of the own vehicle position and the error range of the portable device 1 The direction angle range 600 formed by the direction 501 is a very large angle range (see FIG. 7C).
If a user approaching the vehicle position recognizes a display pointing to a direction largely different from the direction of the vehicle position under the influence of this error before visually checking the vehicle position, the wrong vehicle It leads to the car. Furthermore, although the vehicle position can be visually confirmed, if the display pointing to a direction largely different from the direction of the vehicle position is affected by this error, the display feels incorrect. That is, an unmatched feeling of direction display is generated. This can lead to vehicle quality evaluation.

  In the first embodiment, when the distance between the own vehicle position and the current position of the portable device 1 is very close, the display is emphasized so that the expression of the sense of distance occupies the most, so the own vehicle position and the current position of the portable device 1 are Express very close and do little to express direction. As a result, the display is not felt to be wrong, that is, the unmatched feeling of direction display is not generated.

Further, in the setting of the distance in the lower part of FIG. 5, different values are set when increasing and when decreasing. Thereby, for example, when the user who has the portable device 1 changes from a state of leaving to the own vehicle to a state of approaching, the display is not repeated in a slight distance range.
More specifically, if the same distance setting is used when approaching and leaving the vehicle, the display changes frequently when the vehicle approaches and leaves the vehicle at a slight distance in the boundary, resulting in a sense of incongruity. It will be. Therefore, by setting different values for the increase and decrease, the display does not change frequently even when the user repeatedly moves toward and away from the vehicle within a small distance range.

  Moreover, in Example 1, the own vehicle position detection apparatus uses the portable device 1 of a keyless system. Therefore, the portable device 1 uses the wireless communication unit 16 to exchange ID information serving as identification information by wireless communication with the wireless communication unit 22 of the in-vehicle device 2, for example, communication using LF waves or RF waves. Authenticate and unlock and lock without key operation. Naturally, the CPU is provided in the portable device 1 and the vehicle-mounted device 2 for this processing. Therefore, providing the vehicle position detection device of the first embodiment integrally with an existing keyless system can greatly reduce the cost and is easy to adopt in an actual vehicle.

Next, the effect will be described.
In the own vehicle position detection device of the first embodiment, the effects listed below can be obtained.

  (1) In the portable device 1 that detects the direction of the host vehicle and displays the direction of the host vehicle on the display unit 18, the display unit 18 displays a directivity expression indicating the direction of the host vehicle and a sense of distance to the host vehicle position. Since the first display 401 to the seventh display 407 in the A direction to the H direction are integrated, the display of the sense of distance is strengthened when the display range of the orientation is widened due to the coordinate error, and the orientation is different due to the coordinate error. It is possible to reduce the feeling of the user (direction unmatch).

  (2) In the above (1), the display unit 18 emphasizes the directivity expression as the distance to the vehicle position increases, and increases the sense of distance as the distance to the vehicle position decreases. Since the first display 401 to the seventh display 407 in the A direction to the H direction for changing the display under the control of the CPU 11 to enhance the expression are provided, the distance to the vehicle position is long and the display range of the direction due to the coordinate error is narrow. In some cases, the directionality expression should be emphasized to fully indicate the direction of the vehicle, and if the distance to the vehicle position is close and the display range of the azimuth is widened due to coordinate errors, the display of the sense of distance should be strengthened. It is possible to reduce the feeling that the direction is different due to the coordinate error (direction unmatched feeling).

  (3) In the above (2), the wireless communication unit 16 that acquires the coordinate position of the own vehicle through communication with the vehicle-mounted device of the own vehicle, the GPS communication unit 14 that detects the coordinate position of the portable device 1, and the GPS antenna 15; Processing of the CPU 11 for calculating the coordinate position of the own vehicle and the distance from the coordinate position of the portable device 1 to the own vehicle, and processing of the CPU 11 for calculating the direction of the own vehicle from the coordinate position of the own vehicle and the coordinate position of the portable device 1 Therefore, the vehicle coordinates transmitted from the host vehicle and the coordinate position of the portable device 1 can be reliably obtained by communication, and based on the information, the distance to the host vehicle and the direction of the host vehicle are determined by the CPU 11 of the portable device 1. By performing the arithmetic processing with, display can be performed based on an accurate calculation.

  (4) In the above (3), when the in-vehicle device 2 detects that the occupant gets out of the vehicle, the wireless communication unit 16 obtains the coordinate position of the own vehicle by communication, so that there is no subsequent movement of the own vehicle position. Based on accurate calculation, the CPU 11 of the portable device 1 calculates the distance to the vehicle and the direction of the vehicle based on reliable information so that the coordinate position of the vehicle can be obtained by communication. Can be displayed.

  (5) In the above (3) or (4), the coordinate position of the vehicle is GPS coordinates, and the GPS communication unit 14 and the GPS antenna 15 detect the GPS coordinates, and therefore receive GPS signals without any particular limitation. The coordinates can be acquired by the information, the distance to the own vehicle and the direction of the own vehicle can be displayed with accurate information, and the user feels that the direction is different due to the error range 500,501 of the GPS coordinates. (Direction unmatched feeling) can be reduced.

  (6) In any one of the above (1) to (5), the first display 401 to the seventh display 407 in the A direction to the H direction that are changed by the control of the CPU 11 in the display unit 18 are changed from the display center unit 200. By providing a display range extended in one direction, directivity expression is performed, and the display range is expanded outward from the center portion 200 of the display as the distance to the vehicle position becomes shorter, In order to express the sense of distance, the directivity expression and the expression of the sense of distance are displayed in an integrated manner according to the direction of the display range from the center unit 200 and the degree of expansion, and both the directivity expression and the expression of the sense of distance are moderately Even if it is performed, it can be displayed without a sense of incongruity. In addition, it is possible to make the display easy to understand by the display by the shape.

  (7) In the above (6), the first display 401 to the seventh display 407 in the A direction to the H direction which are changed by the control of the CPU 11 in the display unit 18 are display ranges in which directivity expressions are divided into a plurality of directions, that is, A Since the display range is expressed in directions to H directions and the sense of distance is expressed in a plurality of stages from the center part 200 to the outside, that is, the first arc part to the fourth arc part, the directivity expression and the sense of distance are expressed. In a stepwise manner, the cost for display and the processing load related to the display can be suppressed, and the instantaneous reading performance can be improved by the stepwise shape display.

  (8) In the above (7), the first display 401 to the seventh display 407 in the A direction to the H direction which are changed by the control of the CPU 11 in the display unit 18 are separated in the state where the distance from the own vehicle is the farthest. The display range divided into a plurality of stages outward from the center part 200 in one direction, that is, all of the first arc part to the fourth arc part are displayed, and as the distance from the own vehicle approaches, The display direction is gradually increased to both sides, and the display range divided into a plurality of stages from the center part 200 to the outside is increased in the direction closer to the display direction, and the display range is gradually increased. It is possible to change the display from the display that emphasizes the distance to the display that emphasizes the sense of distance most without causing a sense of incongruity. If also it is possible to perform high recognition of the integrated display.

  (9) In any one of the above (6) to (8), the first display 401 to the seventh display 407 in the A direction to the H direction, which are changed by the control of the CPU 11 in the display unit 18, Since the threshold for changing the display when the distance of the vehicle decreases and the threshold for changing the display when the distance between the vehicle and the portable device 1 are increased (the lower table in FIG. 5), the user can By holding the machine 1, it is possible to prevent the display from changing frequently even if it repeatedly approaches and separates from the own vehicle in a short distance range, so that a sense of incongruity does not occur, and a stable display can be performed so that it is easy to see. .

  The portable device 1 of the present invention has been described based on the first embodiment. However, the specific configuration is not limited to these embodiments, and the gist of the invention according to each claim of the claims. As long as they do not deviate, design changes and additions are permitted.

For example, in the first embodiment, the portable device is integrated with the portable device of the keyless system, but a portable device may be provided separately from the portable device of the keyless system.
In addition, in the first embodiment, the direction of the own vehicle is detected by calculating the coordinate position obtained from the own vehicle. However, the position of the own vehicle may be detected by another means.

It is a figure which shows the block configuration of the portable machine which is the own vehicle position detection apparatus of Example 1, and a vehicle side apparatus. It is explanatory drawing of the display part of the portable machine which is the own vehicle position detection apparatus of Example 1. FIG. It is a flowchart which shows the flow of the process of the own vehicle position performed with CPU21 of the vehicle equipment 2 of Example 1. FIG. 6 is a flowchart illustrating a flow of processing of the own vehicle position executed by the CPU 11 of the portable device 1 according to the first embodiment. It is explanatory drawing of the display pattern of a display part of the portable apparatus which is the own vehicle position detection apparatus of Example 1, distance, and a direction. It is explanatory drawing of the state which detected and displayed the own vehicle position in the portable device 1 of Example 1. FIG. It is explanatory drawing of the error position of the own vehicle position of the present position of the portable device 1 which is the own vehicle position detection apparatus of Example 1, and an angle.

Explanation of symbols

1 Mobile device 11 CPU
DESCRIPTION OF SYMBOLS 12 Memory 13 Geomagnetic sensor 14 GPS communication part 15 GPS antenna 16 Wireless communication part 17 Antenna 18 Display part 100 Display surface 2 Vehicle-mounted apparatus 21 CPU
22 radio communication unit 23 antenna 3 GPS communication unit 31 GPS antenna 101a to 101h first arc portion 102a to 102h second arc portion 103a to 103h third arc portion 104a to 104h fourth arc portion 200 center portion 301 first distance range 302 2nd distance range 303 3rd distance range 304 4th distance range 305 5th distance range 306 6th distance range 307 7th distance range 401 1st display 402 2nd display 403 3rd display 404 4th display 405 5th display 406 Sixth display 407 Seventh display 500 Error range 501 (GPS coordinate of own vehicle) Error range 600 (GPS coordinate of portable device) Angle range C Vehicle

Claims (9)

In the own vehicle position detecting device for detecting the direction of the own vehicle and displaying the direction of the own vehicle with the display means,
The display means includes a display in which a directivity expression indicating the direction of the host vehicle and an expression of a sense of distance to the host vehicle position are integrated.
The own vehicle position detection apparatus characterized by the above-mentioned. In the own vehicle position detection device according to claim 1,
The display means includes
Display changing means for emphasizing the directivity expression as the distance to the host vehicle position increases and changing the display so as to emphasize the expression of the sense of distance as the distance to the host vehicle position decreases. With
The own vehicle position detection apparatus characterized by the above-mentioned. In the own vehicle position detection device according to claim 2,
Own vehicle coordinate detection means for acquiring the coordinate position of the own vehicle through communication with the on-vehicle device of the own vehicle;
Device coordinate detection means for detecting the coordinate position of the vehicle position detection device;
Distance calculating means for calculating the distance from the coordinate position of the own vehicle and the coordinate position of the own vehicle position detecting device to the own vehicle;
Direction calculation means for calculating the direction of the vehicle from the coordinate position of the vehicle and the coordinate position of the vehicle position detection device;
A vehicle position detection apparatus comprising: In the own vehicle position detection device according to claim 3,
The vehicle coordinate detection means includes
When the in-vehicle device detects the passenger getting off, the coordinate position of the own vehicle is acquired by communication.
The own vehicle position detection apparatus characterized by the above-mentioned. In the own vehicle position detection device according to claim 3 or claim 4,
The coordinate position of the vehicle is GPS coordinates,
The device coordinate detection means detects GPS coordinates;
The own vehicle position detection apparatus characterized by the above-mentioned. In the own vehicle position detection device according to any one of claims 1 to 5,
The display changing means includes
By providing a display range extended in either direction from the center of the display, the directivity expression is performed,
As the distance to the vehicle position gets closer, the display range is expanded from the center of the display to the outside, thereby expressing the sense of distance.
The own vehicle position detection apparatus characterized by the above-mentioned. In the own vehicle position detection device according to claim 6,
The display changing means includes
Express the directivity expression in a display range divided in multiple directions,
Expressed the expression of the sense of distance in a display range divided into a plurality of stages from the center to the outside,
The own vehicle position detection apparatus characterized by the above-mentioned. In the own vehicle position detection device according to claim 7,
The display changing means includes
In the state where the distance from the vehicle is the farthest, the entire display range divided into a plurality of stages from the center to the outside in one divided direction is displayed.
As the distance from the vehicle gets closer, the display direction gradually increases on both sides of the displayed direction, and the display range divided in multiple steps from the center to the outside increases in the direction closer to the displayed direction. And the display range gradually increased.
The own vehicle position detection apparatus characterized by the above-mentioned. In the own vehicle position detection device according to any one of claims 6 to 8,
The display changing means includes
The threshold for changing the display when the distance between the host vehicle and the host vehicle position detection device is different from the threshold for changing the display when the distance between the host vehicle and the host vehicle position detection device is increased. ,
The own vehicle position detection apparatus characterized by the above-mentioned.

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