JP5756929B2 - Target detection apparatus and program - Google Patents

Description

  The present invention relates to a target detection apparatus and a program.

  2. Description of the Related Art A target detection device that detects and notifies a microwave transmitted from a vehicle speed measurement device is known. This target detection device recognizes the reception of microwaves from the vehicle speed measurement device even when it receives microwaves sent from a malfunction source such as an automatic door of a convenience store using the same frequency as the speed measurement device. As a result, there is a problem that an unnecessary alarm is issued. In view of such circumstances, recent target detection devices store position information of malfunction sources, recognize the position of the vehicle by GPS, and detect the microwave when the vehicle is positioned at the malfunction source. Also, it is possible to prevent unnecessary alarms from being issued by controlling so as not to generate alarms.

  Further, the device for measuring the speed of the vehicle is not limited to the one using the above-mentioned microwave. For example, a vehicle traveling on the road is detected by two loop coils embedded and installed under the road. Some vehicles measure based on a time difference between detection signals output from two loop coils. This type of vehicle speed measurement device cannot be detected by the target detection device using the above-described microwave detection because microwaves are not output.

  Therefore, the target object detection device that stores and holds the position information of the detection object and issues an alarm when the position of the vehicle detected by the GPS and the position of the detection object are in a predetermined relationship. (For example, Patent Document 1).

  In the case of the target detection apparatus described in Patent Document 1 above, for example, when the detection target and the current position of the vehicle reach a set distance (for example, 1 km, 500 m, etc.), “500 m ahead, XX. (XX indicates that an alarm by voice such as information (loop coil or the like) for specifying a target is output, or the information on the display is output and displayed as text.

Utility model registration No. 3070388

  In general, a plurality of positional relationships (for example, 1 km, 500 m, immediately before,...) Are set for one target object as a trigger for the alarm. Therefore, when a target is present ahead of the lane in which the vehicle is traveling, a warning is issued multiple times as the vehicle travels (approaching the target), and the driver is the target vehicle. It is easy to understand that the speed measuring device is approaching (the target is ahead).

  By the way, a plurality of targets often exist around the own vehicle. In such a case, when a target that matches the positional relationship that triggers the alarm is detected, an alarm is issued for the target. Therefore, when a certain target is approaching, an alarm based on a target other than the target may be issued. For example, on a highway or the like, a plurality of targets A and B may be arranged at an appropriate interval on the same travel route. For the sake of convenience, it is assumed that the distance between the target A and the target B is 800 m away, and the alarm is issued when the distance between the vehicle and the target is 1 km, 500 m and the previous positional relationship. Then, first, an alarm is issued twice based on the target A (1 km and 500 m), then an alarm of 1 km is issued based on the target B, and then an alarm is issued to notify immediately before based on the target A. Will be. Therefore, since the driver does not know which alarm is based on the target A or B, immediately after recognizing that the target exists at a relatively distant position such as 1 km, the target suddenly comes immediately before. It will be recognized that there is, is not preferable.

  In addition, there is a target C installed in front of the traveling road and a target D installed on a road other than the traveling road, and the distance between the vehicle and the target D is closer. Therefore, effective alarm notification cannot be performed (the driver does not know which target is notified).

  Furthermore, the road on which the vehicle travels is not limited to a straight line, and may be appropriately curved. Then, depending on the location of the vehicle, the distance to the target D, which has a substantial path, becomes shorter, the distance to the informed vehicle differs from the actual appearance order, and the driver There is also a problem of not knowing whether the target is being notified.

  The present invention has been made to solve such a problem, and even when there are a plurality of targets around the own vehicle, the positional relationship between each target and the own vehicle can be easily recognized. An object of the present invention is to provide a target detection device and a program that can be used.

In order to achieve the above-described object, the target object detection apparatus according to the present invention includes: (0-1) position detection means for detecting the position of the own vehicle; Extraction means for extracting a target object to be displayed based on position information detected by the means and position information of the target object stored in the database; position information of the target object extracted by the extraction means; A display unit for displaying the vehicle position information, and the display unit is configured to notify the position of the target and the current position of the vehicle by marks arranged on the secondary plane, The area to be notified by the mark arranged on the secondary plane includes a north-up display mode in which north is displayed up and a heading-up display mode in which the traveling direction of the vehicle is up. The position of the vehicle When the position of the target object satisfies a set alarm condition, it is configured to display another alarm area together with an area to be notified by a mark arranged on the secondary plane, and the another alarm area When the alarm condition is satisfied, the area is gradually increased, the area to be notified by the mark arranged on the secondary plane is gradually reduced, and the area to be notified by the mark arranged on the secondary plane is It has a function of switching an area to be notified by a mark arranged on the secondary plane to a heading-up display when the other alarm area is displayed during display in the north-up display mode. (0-2) A process of selecting one target that matches a selection condition for determining a target to be noticed from a plurality of targets existing in a region to be notified by a mark arranged on the secondary plane is performed. Control is performed so that the target is displayed in the display area of the display unit until the target is out of the alarm range. (0-3) The display of the target mark is configured to select a display mode for all targets and a display mode for the one target to be noted. . (0-4) In the display mode in which the mark of the target is displayed for the one target to be noted, a simple mark is displayed for the other target. (0-5) Among the display modes for storing the road type information where the target is installed and displaying the target only for the general road, the display mode for displaying the target only for the expressway, and the display mode for displaying both The target object is displayed according to the set display mode. (0-6) When the position of the vehicle and the position of the target object satisfy the set alarm condition, the display color of the area to be notified by the mark arranged on the secondary plane is changed, A part that rotates around the position of the host vehicle is displayed. (0-7) An alarm lamp is provided, and the light emission state of the alarm lamp is linked to the display state of the mark of the target object to be noted on the display unit. (0-8) A program for causing a computer to realize the function as the target detection apparatus according to any one of (0-1) to (0-7). (1) Position detecting means for detecting the position of the own vehicle, a database for storing position information of the target, position information detected by the position detecting means, and position information of the target stored in the database And a display unit that displays the target position information extracted by the extraction unit and the vehicle position information, and the display unit includes: Processing for selecting one target meeting a predetermined condition, configured to notify the positions of a plurality of targets and the current position of the vehicle by marks arranged on a secondary plane (two-dimensional plane) And controlled to display in the display area of the display unit until the target is out of the alarm range. In the embodiment, the mark corresponds to a target icon, a focus icon, or a mark when simply displayed.

  (2) It is determined whether or not the position of the host vehicle and the position of the target object match the set alarm condition, and if they match, information for specifying the target object and the target object It is preferable to provide means for associating distances and displaying them on the display unit. In this way, the user can easily identify the type of target that is being alerted, and at the same time know the distance to the target, as well as the positional relationship between the target and the vehicle and target. The positional relationship between them can be easily known at the same time.

  (3) The mark corresponding to the target that matches the alarm condition may be displayed in a display mode different from other marks. In the embodiment, in the embodiment, the shape is changed like a star shape and the light emission state is changed such as blinking, but either one may be used, or may be changed in another form. In this way, the user can know at a glance which displayed target is the target that matches the alarm condition. In addition, the positional relationship between the target that matches the alarm condition, the host vehicle, and other targets can be easily grasped simultaneously.

  (4) In response to an instruction from the user, means for selecting one of the target marks displayed on the display unit and the display mode of the selected mark are displayed in a display mode different from the other marks. In addition, there may be provided means for associating information for specifying the target corresponding to the selected mark and the distance to the target on the display unit.

  (5) The display area of the secondary plane may be the entire circular area centering on the position of the vehicle or a part thereof.

  (6) The display area of the secondary plane is a part of a circular area centered on the position of the host vehicle, and a part of the area can be changed by scrolling in the traveling direction of the vehicle. Good. In this way, an easy-to-understand display can be performed by effectively using a relatively small display screen.

  (7) The display area of the secondary plane may be used as a standby screen in a standby state where the position of the vehicle and the position of the target do not match the set alarm conditions. .

  (8) The display area of the secondary plane may be used as an alarm screen in an alarm state in which the position of the host vehicle and the position of the target object meet the set alarm conditions.

  (9) While the standby screen is displayed on the display unit, the vehicle is arranged on the secondary plane from the standby screen when the position of the vehicle and the position of the target object satisfy the set conditions. It is good to control to switch to a screen informing with a mark (corresponding to the target display screen of the main display area of the embodiment). In this way, the standby screen can be normally enjoyed, and the screen is informed by the mark only when the object is detected, which is highly convenient.

  (10) On the display unit, when a warning condition in which the position of the host vehicle and the position of the target object are set is satisfied, a screen informing by a mark arranged on the secondary plane and another screen It may be configured to display an alarm screen.

  (11) When the target is out of a setting range, the display on the display unit may be returned to the standby screen. The setting range can be various, such as a secondary plane display area, a circular area, or a separately set area. All targets may be set the same, or may be different for each target. In this way, it is easy to understand that the target has moved away by returning to the standby screen.

  (12) In the display unit, when the position of the vehicle and the position of the target object satisfy a set alarm condition, another screen is displayed along with a screen informed by a mark arranged on the secondary plane. It is configured to display an alarm screen, and the alarm condition is more urgent than the condition for switching from the standby screen to a screen informing by a mark arranged on the secondary plane (on the vehicle) Close). This is preferable because the approach of the target can be easily known from the warning screen while confirming the positional relationship between the vehicle and the target on the screen informed by the mark.

  (13) The alarm screen may include a still image associated with a target target type.

  (14) The alarm screen may include a moving image associated with a target target type. In particular, it is more preferable to compose a still image and a moving image side by side.

  (15) The alarm screen may be displayed gradually when an alarm condition is satisfied, and control may be performed so as to gradually reduce the screen that is notified by a mark arranged on the secondary plane. This corresponds to “slide-in” in the embodiment. By gradually displaying in this way, more attention can be obtained.

  (16) The display unit may be provided with an area for displaying a mark indicating a target or other state, in addition to a screen informing by a mark arranged on the secondary plane. This area corresponds to the icon display area R2, the message display area R3, the icon / message display area R4, and the like of the embodiment.

  (17) It may be configured to emit a sound when the display mode of the screen is changed. In this way, it is possible to know that the display mode has been switched by the sound and that the surrounding situation has changed. In particular, it is preferable to use different sounds and gradually increase the sound of urgency (volume, tone color, pitch, melody, voice content, etc.) because the degree of attention can be grasped by the sound.

  (18) When the position of the vehicle and the position of the target object satisfy the set alarm condition, the display color of the screen notified by the mark arranged on the secondary plane is changed, and the vehicle It is good to display the site | part (in the embodiment, a fan-shaped area | region) rotated centering on the position of. This is preferable because it is easy to understand that an alarm has occurred.

  (19) The display of the mark of the target may be configured to select a display mode that is performed for all applicable targets and a display mode that is performed for one target to be noted. Such display mode switching may be performed manually by a user or automatically. In this way, only one target mark (in the embodiment, a focus icon) is displayed by switching the display mode, for example, when the density of the mark display is high and the marks are difficult to see due to dense or overlapping. It is possible to switch to the display of, and to easily know the existence thereof, and to display all the targets, it is possible to know the surrounding situation in detail.

  (20) The display mode may be changed according to the density of marks displayed on the display unit. For example, when the density is high, it is possible to reliably and smoothly recognize what is important to display for one target to be noticed. On the other hand, when the density is low, all applicable targets are displayed. By doing so, the surrounding situation can be notified and provided without omission.

  (21) In the case of a display mode in which the mark of the target is displayed for one notable target, a simple mark may be displayed for the other target. By adopting such a configuration, it is possible to notify the presence status of surrounding targets, and to notify the presence of one target to be noticed reliably and smoothly.

  (22) Processing for selecting one target meeting a predetermined condition may be performed, and control may be performed so that the target is displayed in the display area of the display unit until the target is out of the alarm range (tracking display). .

  In addition, when one target that meets the predetermined condition is selected and the target that meets the predetermined condition is changed, the mark after the change is changed from the mark of the target before the change. It is good to perform guidance display to. In this way, it is easy to understand that the target that matches the condition has changed. In addition, it is easy to understand from which target the target that matches the condition has changed to which target. For example, the guidance display may be a display for assisting the movement of the user's viewpoint. For example, the guidance display may be performed by drawing at any time so as to move the target display portion (in the embodiment, a pair of triangular instruction marks) near the mark before the change to the vicinity of the mark after the change. When drawing is performed as needed to move, for example, drawing may be performed by moving a target display unit while avoiding a target mark that does not match the condition.

  (23) Setting of a display mode for storing road type information on which a target is installed and displaying a target only for a general road, a display mode for displaying a target for only an expressway, and a display mode for displaying both The target object may be displayed according to the displayed display mode. In this way, for example, during traveling on a general road, provision of unnecessary information can be suppressed by not displaying the target installed on the highway. In addition, about the target object with which road type information is not linked | related, it is good to display irrespective of mode.

  (24) An alarm lamp may be provided, and the light emission state of the alarm lamp may be linked to the display state of the target mark to be noted on the display unit. For example, when the mark blinks, the alarm lamp may blink in synchronization with the blinking operation, or the presence position of the mark in the display unit may be estimated by turning on the alarm lamp. .

  (25) A north-up display mode in which north is displayed upward and a heading-up display mode in which the traveling direction of the vehicle is upward are provided, and the heading-up display is displayed when an alarm screen is displayed during display in the north-up display mode. It is good to have the function to switch. In this way, even if the display screen is narrowed in the horizontal direction, the marks can easily fit in the display screen.

  (26) The display form displayed in the display area of the secondary plane may be a bird's-eye view (a form as if looking down obliquely from above: a bird's-eye view). Of course, a display form such as a plan view looking directly down from above may be adopted, and various display forms can be adopted.

  In the present invention, even when there are a plurality of targets around the own vehicle, the positional relationship between each target and the own vehicle can be easily recognized.

It is a figure which shows suitable one Embodiment of this invention. It is a figure which shows the block diagram of this embodiment. It is a figure which shows an example of the display mode of a display part. It is a figure explaining an alarm function. It is a figure explaining the switching function of a focus when there is no alarming target. It is a figure explaining the switching function of a focus when a warning object and a warning object exist. It is a figure explaining the switching function of a focus when an alarm target generate | occur | produces. It is a figure explaining the switching function of a focus when a warning target changes outside a warning object. It is a figure explaining the switching function of a focus when an alarm target exists outside a screen. It is a figure explaining the alarm function at the time of receiving a radio | wireless / microwave. It is a figure explaining an alarm function. It is a figure explaining an alarm function. It is a figure explaining a scroll function. It is a figure explaining an alarm function. It is a figure which shows an example of the display mode of the display part of another embodiment. It is a figure which shows an example of the icon displayed on an icon message area. It is a figure which shows an example of a target icon. It is a figure which shows an example of the display mode of the display part of another embodiment. It is a figure which shows an example of the display mode of the display part of another embodiment. It is a figure which shows an example of the display mode of the display part of another embodiment. It is a figure which shows an example of the display mode of the display part of another embodiment. It is a figure which shows an example of the display mode of the display part of another embodiment. It is a figure which shows an example of the display mode of the display part of another embodiment. It is a figure which shows an example of the display mode of the display part of another embodiment. It is a figure which shows another suitable embodiment of this invention. It is a figure which shows the block diagram of this embodiment. It is a figure which shows an example of the display mode of a display part. It is a figure which shows an example of the display mode of a display part. It is a figure which shows an example of the display mode of the display part of another embodiment.

1 and 2 show a preferred embodiment of the present invention. As shown in FIG. 1, the solar panel 2 and the switch unit 3 are arranged on the upper surface of the case body 1, the microwave receiver 4 is arranged inside the front side of the case body 1, and the display unit 5 is arranged on the rear surface of the case body 1. An alarm lamp 6 and an infrared transmission / reception unit 7 are arranged. A GPS receiver 8 is disposed inside the upper surface side of the case body 1. Further, an adapter jack 9 is disposed on one side surface of the case body 1, and a power switch 10 and a DC jack 11 are disposed on the other side surface. A speaker is also built in the case body 1.
As shown in FIG. 2, the infrared transmission / reception unit 7 transmits / receives data to / from a communication device incorporating an infrared transceiver such as a mobile phone 12. The adapter jack 9 is a terminal for connecting the memory card reader 13. By connecting the memory card reader 13 to the adapter jack 9, data stored in the memory card 14 attached to the memory card reader 13 can be taken in. More specifically, the data stored in the memory card 14 includes update information such as information on a new target (position information including longitude and latitude, type information, etc.), and the update information passes through the control unit 18. Then, the data is stored (downloaded) in the database 19 built in the target object detection apparatus, and the data is updated. The database 19 can be realized by a nonvolatile memory (for example, EEPROM) in the microcomputer of the control unit 18 or externally attached to the microcomputer. The database 19 stores information related to a certain target at the time of shipment, and data on the target added after that is updated as described above. Data update can also be performed via the infrared transmission / reception unit 7.

  The DC jack 11 is for connecting a cigar plug cord (not shown), and is connected to a cigar socket of the vehicle via the cigar plug cord so that power can be supplied. Furthermore, the target object detection apparatus of the present embodiment includes a wireless receiver 15 and a remote control receiver 16. The wireless receiver 15 receives incoming radio waves having a predetermined frequency. The remote control receiver 16 performs data communication with a remote control (portable device: handset) 17 and performs various settings for the target detection device. The switch unit 3 is also connected to the control unit 18 (not shown) so that the same setting as the remote controller 17 can be performed.

  And the control part 18 performs a predetermined | prescribed process based on the information input from said various input devices (receiver etc.), and uses an output device (display part 5, alarm lamp 6, speaker 20, etc.). To output predetermined alarms and messages. In addition, since these basic structures can use the thing similar to a conventional thing fundamentally, the detailed description is abbreviate | omitted.

  In the present embodiment, the size and shape of the display unit 5 are made larger than before (in particular, the height direction is widened). Accordingly, the height H on the rear side of the case body 1 on which the display unit 5 is mounted is made sufficiently larger than the height H0 of other parts.

  FIG. 3 shows an example of a display mode displayed on the display unit 5, and FIG. 4 shows a schematic view (simplification). In the present embodiment, the display unit 5 is realized using, for example, an organic EL display or a liquid crystal display. As shown in the figure, the display unit 5 includes a main display region R1 that occupies most of the display unit 5, a message display region R2 disposed on the lower end side, and an icon display region R3 disposed on the upper end side. . The icon display area R3 includes icons indicating operation states such as an icon M1 indicating the remaining battery level, an icon M2 indicating that the GPS is being received, an icon M3 indicating that the microwave is being received, and a parking prohibited area around the current position. An icon or the like for leaving the surrounding state / information is displayed, such as a parking prohibition icon M4 indicating that it is. Such a display is output by a control command from the control unit 18.

  The message display area R2 displays a name (“loop coil” in FIG. 3) for specifying the type of a predetermined target and a distance to the target (“1200 m” in FIG. 3). As will be described later, when the target displayed in the region R2 is displayed in the target display region R1, the displayed alarm target icon is drawn in a manner that can be distinguished from other alarm target icons.

  The main display area R1 is mainly for indicating the positional relationship between the target (target) and the vehicle, and can display a plurality of targets. Both the vehicle and the target are indicated by icons. The own vehicle is indicated by an own vehicle progress icon I0 formed of a substantially diamond shape. A target (target) existing within a circle having a predetermined radius (switchable) centered on the own vehicle progress icon I0 is displayed as a target icon at the position where the target is present. As apparent from FIGS. 3 and 4, since the main display region R1 has a vertically long shape, the horizontal width of the main display region R1 is substantially equal to or slightly wider than the diameter of the circle centered on the own vehicle traveling icon I0. When set, the height direction of the main display area R1 is wider in the circle area. That is, some or all of the target icons existing in the circle area may be located outside the main display area R1. However, in this embodiment, even in an area outside the main display area R1, the position information of the target icon existing in the area of the circle is provided as a virtual area so that it can be displayed. In other words, the control unit 18 arranges target icons that exist within a circle area of a predetermined radius centered on the host vehicle, and actually outputs and displays only those that exist within the screen frame of the main display area R1. . Thereby, for example, even when the traveling direction of the vehicle changes, the target icon can be displayed smoothly.

  Further, the display screen in the main display area R1 is displayed with the traveling direction of the host vehicle viewed upward. This is based on the position information of the own vehicle given from the GPS receiver 8, the control unit 18 obtains the traveling direction of the own vehicle, obtains the position of each target with the traveling direction facing upward, This can be dealt with by displaying what exists in the display area at the corresponding position.

  The target is indicated by a round or star target icon Tn. Among the target icons Tn, there are an alarm target icon indicating a target that is an alarm target and a non-alarm target icon indicating a target that is not an alarm target based on the positional relationship with the host vehicle. Here, the alarm target is a target that is in front of the traveling direction of the host vehicle (± 90 ° from the traveling direction) and has a warning angle such as a speed measuring device that emits microwaves. The condition within the angle (target alarm angle ± 40 °) is provided.

The alarm non-target icon has a gray icon color. The alarm target icon is an icon that represents a target (target) that is an alarm target, and is color-coded according to the degree of urgency (importance). As an example of color coding,
There are three types of urgency level: red urgency level medium: yellow urgency level low: green.

  As a target with a high degree of urgency, there is a vehicle speed measuring device such as a loop coil, for example. An example of a medium urgency target is a police station. As a target with a small degree of urgency, for example, a service area on a highway, a place related to traffic such as a road station installed beside a general road, or a monitoring device other than a vehicle speed measuring device such as an N system Etc.

  As a result, the round target icon is displayed by being color-coded into a maximum of four colors. Note that the type of target to be displayed / hidden can be switched by setting. Such switching setting is performed by operating the switch unit 3 or the remote controller 17.

  The database 17 has a table structure in which the type of target, position information, urgency, and monitoring direction (if any) are associated. Furthermore, it is preferable to associate the valid / invalid flag and set so that only the flag that is ON is displayed.

  Furthermore, when displaying a plurality of targets, a target having a high importance (priority) is drawn on the front side. This obtains the vehicle position information (longitude / latitude) given from the GPS receiver 8 and the radius information (or the maximum radius) of the current circular display area and accesses the database 19 to obtain the current position. And the distance to the target is shorter than the acquired radius, and the display position in the main display region R1 is specified from the relationship with the traveling direction of the vehicle. Further, the importance level of the target object to be displayed is obtained, and target icons of predetermined colors are drawn in order from the lowest importance level. As a result, when part or all of the plurality of target icons overlap, when drawing a target icon of a high importance target that will be drawn later, the part that meets the already drawn low importance icon, Since the target icon with high importance currently being drawn is drawn by overwriting, the target with high importance (priority) is drawn on the front side.

  Note that the severity of importance corresponds to the above urgency, the highest urgency is the most important, then the urgency is medium, the urgency is low, and the last is out of alarm Become a target. When the urgency level is the same, the closer the distance to the vehicle, the higher the priority.

  Furthermore, in the present embodiment, one of the target icons having a condition is set as the focus icon F, and is drawn in a display mode different from that of the other circular target icons. This focus icon is an icon representing a target (focus target) in focus. The shape is a star shape, and the icon color is the same as the icon color in the corresponding target icon and blinks.

  Specifically, the focus icon indicates a target that is currently being alarmed or that is not in alarm but that has an alarm target in the screen or that is selected by the user. As described above, the focus target icon becomes a focus icon and blinks. And the control part 18 is the information about the focus target with respect to the message display area R2 at the bottom of the screen, specifically, the target name (type name), the distance to the target (target), Is displayed.

  In other words, when a message is displayed in the message display area R, if the target icon corresponding to the message is displayed in the main display area R, the target icon becomes the focus icon and the display mode is switched (star shape). & Blinking).

  In other words, the focus target has a fixed relationship between the host vehicle and the target (target object), and when the notification timing is reached, the focus target is automatically selected and the display is switched, and the user manually operates (the switch unit 3 or the remote controller). 17), the focus target may be switched. Further, the focus target switching accompanying the user operation is performed by pressing a predetermined switch provided on the switch unit 3 or the remote controller 17 to switch the next farthest / closest target from the currently focused target to the focus target. . If this operation (depressing a predetermined switch) is performed when the focus is not on, the target (target icon) closest to the vehicle position is set as the focus target (focus icon) regardless of whether or not the alarm is applied. To do.

  Next, a specific focus target (focus icon) switching operation will be described. FIG. 5 is a diagram for explaining a focus switching function when there is no alarming target. When there is no target (alarm target) that is in the alarm condition such that the distance between the vehicle position and the target is a predetermined distance, there is no information to be displayed in the message display area R2, so FIG. ), The main display area R1 is displayed up to the message display area, and four target icons T1 to T4 are displayed. Since T3 and T4 are not within ± 90 ° with respect to the traveling direction of the vehicle, they become non-alarm target icons and are displayed in gray regardless of their types.

  In this state, when the user performs the most recent / farthest focus operation by depressing a predetermined switch, the control unit 18 sets the most recent / farthest target from the vehicle position as the focus target, as shown in FIG. (In this example, a recent target is selected) The corresponding target icon T1 becomes the focus icon F, blinks in a star shape, and information on the focus icon F (target name: N system, distance: 400 m) It is displayed in the message display area R2. The control unit 18 calculates the distance to each target based on the own vehicle position information given from the GPS receiver and the position information of each target stored in the database 19, so that the most recent / farthest distance is obtained. Targets can be extracted.

  If a certain time (for example, 10 seconds) elapses in this state, the original state is restored. That is, if there is no alarm target before a certain time elapses, no target is focused, and everything returns to a circular target icon (color varies depending on the type, etc.) (see FIG. 5C). .

  FIG. 6 is a diagram for explaining a focus switching function when there is an alarm target and / or an alarm target. When there is an alarm target, the current target focus is the alarm target closest to the vehicle position, so as shown in FIG. 6A, the control unit 18 changes the target icon T1 to the focus icon F, The icon is blinked in a star shape, and information of the focus icon F (target name: loop, distance: 400 m) is displayed in the message display area R2.

  In this state, when the user performs the nearest / farthest focus operation by pressing a predetermined switch, the control unit 18 sets the nearest / farthest target from the current focus target as the focus target, as shown in FIG. As shown (in this example, a recent target is selected), the corresponding target icon T2 becomes the focus icon F, blinks in a star shape, and information on the focus icon F (target name: N system, distance: 700 m) Is displayed in the message display area R2.

  If a certain time (for example, 10 seconds) elapses in this state, the target focus F is shifted to the alarm target closest to the original state, that is, the vehicle position (see FIG. 6C). The reason why the target focus F is returned to the alarm target in this manner is that the highest priority target to be displayed is the alarm target closest to the vehicle position.

  FIG. 7 is a diagram for explaining a focus switching function when an alarm target is generated. Regardless of whether or not a target that is not an alarm target is in focus, when a target having an alarm condition is generated, the alarm target is made the focus target with the highest priority. As an example, as shown in FIG. 7A, when the target icon T1 for the N system is initially selected as the focus icon F according to the user's instruction, the vehicle advances and the vehicle is in an alarm condition. When a loop coil is detected 1 km ahead, the focus icon F is switched as shown in FIG. 7B, and information (target name: loop, distance: 1000 m) of the focus icon F is displayed in the message display area R2. To display.

  FIG. 8 is a diagram for explaining a focus switching function when the alarm target transitions outside the alarm target. When the alarm target transitions outside the alarm target, the target icon of the target is switched to the focus icon if there is an alarm target in the display screen, and if there is no alarm target, the focus is not reached (the focus icon disappears) ). As an example, as shown in FIG. 8A, when the target icon T1 of the alarm target of the loop coil that is the alarm target is initially present as the focus icon F on the display screen, As shown in FIG. 8 (b), the target icon T2 that has transitioned out of the alarm target (moved outside the traveling direction of the vehicle ± 90 °) and newly appeared ahead in the traveling direction of the vehicle as shown in FIG. Otherwise, the focus icon disappears.

  When the position of the alarm target exists outside the current scale screen, the control unit 18 displays only the alarm name and distance in the message display area R2 without displaying the target icon ( (See FIG. 9).

When the wireless receiver 15 receives a radio signal having a predetermined frequency, the control unit 18 displays the warning message (type: within the car location) in the message display area R2 (see FIG. 10A). Similarly, when the microwave receiver 4 receives microwaves of a predetermined frequency, the relationship with the target position information registered in the database 19 is unknown (because it cannot be uniquely identified), so an alarm message accompanying radar reception (Type: Radar) is displayed in the message display area R2 (see FIG. 10B).

  Next, display control accompanying detection of a target will be described. As shown in FIG. 11A, when there is no alarm target in the screen frame, the control unit 18 does not switch to the focus icon. If there is an icon that is not an alarm target, an icon that is not an alarm target is displayed at the corresponding position.

  On the other hand, when the target icon to be alarmed exists in the display, the control unit 18 causes the target icon to blink as the focus icon F, and displays the target information in the message display region R2 at the bottom of the screen (FIG. 11). (See (b)).

  In the present embodiment, as a display mode for the main display region R1, a circular display region is set and a scale is displayed. As shown in FIG. 3 and others, this scale displays two concentric arc-shaped scales S1 and a linear scale S2 extending in the vertical direction so that the radii of the two arcs can be seen at a glance. I tried to do it. Each scale is provided with a memory, and the distance of the scale S2 can be selected and switched by the user. Specifically, six options of “500 m”, “1000 m”, “1500 m”, “2000 m”, “2500 m”, and “3000 m” are prepared as scale (radius) options, similarly to the focus target switching. The screen is switched in ascending order or descending order by the user's switch operation (see FIG. 12).

  Furthermore, in the present embodiment, when the focus target changes to the outside of the screen due to the scale operation (the focus target changes to the outside of the screen), the control unit 18 waits for an arbitrary time (for example, 5 seconds) and then the target in the screen. Control the target to focus. That is, from the state of FIG. 12A (radius 2000 m), it is enlarged by one step and switched to a radius of 1500 m (see FIG. 12B). Then, the focus icon F in FIG. 12A moves out of the screen, but remains in the message display region R2 because the focus icon is not switched for a certain period of time. Then, after a predetermined time or less, the focus target is switched, and as shown in FIG. 12C, a transition to a new focus icon F is made, and information about the new focus target is also displayed in the message display area R2. .

  FIG. 13 is a diagram for explaining a display function in the main display region R1. The display screen of the main display area R1 is smaller than a circle area centered on the vehicle position. For this reason, as shown in FIG. 13A, a part of the circle centered on its own position overlaps the display screen and is actually output and displayed (see FIG. 13A). In this embodiment, a display screen scroll function is provided. That is, as shown in FIGS. 13B and 13C, the circle area and the rectangular display screen move relatively in the vertical direction, and the central portion of the circle area (FIG. 13B), The lower part of the circle area is displayed. Thereby, the state of the vehicle traveling direction rear side can also be known. Such up and down scrolling is also performed by scrolling up or down by pressing a switch from the user.

  FIG. 14 shows an example of the display screen. As shown in FIGS. 14 (a) and 14 (c), a display form in which the position information of the plurality of target icons and the position information of the own vehicle can be displayed in a two-dimensional space is an alarm based on GPS position information. In addition, the present invention can be applied to both a standby state screen (standby screen: FIG. 14C) that does not include alarm information such as reception of microwaves and an actual alarm screen (FIG. 14A).

  Further, at the time of alarm, a plurality of target positions on the two-dimensional space are not notified, and a message such as a character may be output and displayed as in the past (see FIG. 14B). In such a case, since the display screen is large, it is possible to reliably notify the user what kind of alarm it is.

  In addition, as shown in FIG. 14D, the standby screen is an illustration screen that does not display the target icon (in the figure, the number of satellites (24), and the position information of the vehicle (mild, latitude, altitude) are displayed as character strings. You may make it do.

  Although the standby screen and the alarm screen each show two types of patterns in FIG. 14, it does not prevent other patterns from being prepared. The user selects which pattern is to be used during standby and alarm by operating the remote controller 17 and the switch unit 3. That is, the control unit 18 causes the display unit 5 to display a screen for selecting which pattern to use at the time of standby and alarm. The control unit 18 detects a selection state by the operation of the remote controller 17 or the switch unit 3 by the user, and stores which pattern is used for each case based on the selection state. Then, based on the stored pattern, the control unit 18 displays the pattern stored for standby at the time of standby, and displays the pattern stored for alarm at the time of alarm.

  FIG. 15 shows another example of the display mode displayed on the display unit 5. In this example, a main display area R1 occupying most of the display screen and an icon / message display area R4 allocated on the upper side of the display screen are provided. The icon / message display area R4 is the same as the message display area R2 and the icon display area R3 in the above-described embodiment. The icon / message display area R4 is an icon / message display area R4. Is a name (“loop coil” in FIG. 15) for specifying the type of the focus icon) and a distance to the target (“700 m” in FIG. 15). Of course, when there is no name or distance of the target to be displayed, the name or the like is blank.

  FIG. 29 shows still another example of the display mode displayed on the display unit 5. Similarly to FIG. 15, this example also includes a main display area R1 that occupies most of the display screen, and an icon / message display area R4 assigned to the upper side of the display screen. In this example, the display mode of the secondary plane displayed in the main display area R1 is an inclined display (bird's eye view display (3D display)). Note that the displayed mark and other contents are the same as those shown in FIG. Therefore, in the following description, as shown in FIG. 15 and the like, description will be made based on a plan view display form, but the same applies to the bird's eye view display shown in FIG. Furthermore, the use of the bird's eye view display as a display form or a display form of the standby screen in the other embodiments is not hindered.

  Further, there are icons to be displayed as shown in FIG. 16, for example. “Directional magnetic needle display” is an icon indicating the north direction. In the case of heading-up display in which the traveling direction of the vehicle is always directed on the display screen, the azimuth position on the display screen varies depending on the traveling direction of the vehicle. Announce north direction. In order to perform such display, the control unit 18 recognizes the traveling direction of the vehicle based on the GPS information received by the GPS receiver 8, and displays it on the arc in the main display region R1 so that the traveling direction is upward. The direction mark (“N”, “E”, “W”, “S”) to be moved is moved, the north direction is recognized, and the direction magnetic needle display icon is displayed in a predetermined direction. As a result, the direction of the mark “N” indicating north from the vehicle position is parallel to the direction of the magnetic needle display icon. This display is performed at the time of positioning, and remains upward when not positioning.

  “Road selection display” is an icon indicating the type of road where the target displayed in the main display area R1 exists. That is, in the present embodiment, three types of target display modes are prepared: “display of targets only on general roads”, “display of targets only on highways”, and “display both”, automatic switching, presetting or manual Either mode is selected by switching. Thus, since only relevant targets can be displayed according to the road on which the vehicle is running, the user can efficiently collect information. Then, the control unit 18 displays any of the above icons in conjunction with the selected mode. Automatic switching, for example, when traveling speed or information corresponding to the traveling speed is acquired, and when traveling at a high speed (a speed above a certain level), it is determined that the motorway is traveling, and when the vehicle is not traveling at a high speed Determines that the vehicle is traveling on a general road and switches the road type to be displayed. In this case, when it is unclear which road is running, the targets of both roads are displayed. The recognition of the traveling speed can be determined, for example, by calculating the traveling speed based on the received GPS signal or whether the output of the vibration sensor is equal to or greater than a set threshold value (vibration increases when traveling at high speed).

  “Parking prohibition monitoring area display” is an icon displayed when the host vehicle exists in the parking prohibition monitoring area. For example, the point information for specifying the area of the parking prohibition monitoring area is stored, and the control unit 18 determines whether or not the current vehicle position obtained from the GPS information is within the parking prohibition monitoring area. Displays an icon related to the case.

  “Radio alarm display” is an icon for notifying that a predetermined radio is received and an alarm is being issued. When the radio receiver 15 receives a radio signal of a predetermined frequency, the control unit 18 displays the type of radio (car location radio, digital radio, extra small radio, etc.) received as a message in the icon / message display area R4. At the same time, the “wireless alarm display icon” is displayed.

  “Mute display” is an icon displayed while the mute function is operating. “Radar reception sensitivity mode display” is an icon indicating the radar reception sensitivity. In this embodiment, the reception sensitivity is changed according to the traveling speed. Specifically, when the speed is 30 km or more, the city mode is set and the display icon is “C”, and when the speed is 40 km or more. In the extra mode, the display icon is “E”, and when the speed is 80 km or more, the super extra mode is set and the display icon is “SE”. The reception sensitivity is set to be higher as the mode becomes faster. The speed is calculated by the control unit 18 based on the GPS signal, and the control unit 18 switches to the corresponding mode / reception sensitivity according to the calculation result. When the speed is less than 30 km, the control unit 18 performs control so as not to issue an alarm, and the display icon is “(−)”. If GPS positioning is not possible, the super extra mode is set.

  “Drive / local mode display” is an icon for displaying a set mode. In the present embodiment, a “local mode” used in a local area that is a user's normal living area and a “drive mode” used to drive far away are prepared. The local area is within a range of a predetermined radius (for example, 10 km, 20 km, 30 km, etc.) centered on the registered position registered by operating a remote controller or the like. In the case of a living area, there are many cases of knowing the location of a target that should issue an alarm / notification (or a malfunctioning source that emits microwaves but should not be alarmed). Therefore, when the vehicle position is within the local area, the control unit 18 sets the local mode to reduce the types of targets to be monitored and alarmed (default is set to the minimum necessary one) and frequently Control is performed so that an alarm is issued or a large number of targets are displayed in the main display area R1. “L” is output as a display icon indicating that the local mode is being set. Further, the drive mode is set outside the local area, and control is performed so that the types of objects to be monitored / warned are larger than those in the local area. “D” is output as a display icon indicating that the drive mode is being set. Further, in the present embodiment, in both the local mode and the drive mode, a part of the alarmable objects to be performed based on the signals received by the GPS receiver 8, the microwave receiver 4, and the wireless receiver 15. Are subject to warning. Therefore, an all-on mode is also prepared in which all alarmable targets are monitored and alarmed. When the mode is set, “A” is output as a display icon.

  “GPS positioning display” is an icon indicating whether or not a GPS signal is being measured, and is controlled to turn off during GPS positioning and blink when not positioning.

  As described above, by displaying the target state and the state not related to the target in the icon area, the positional relationship of the target and these can be confirmed at the same time.

  As shown in FIG. 15, in the main display area R1, target icons (alarm target icons) corresponding to targets existing around the vehicle position are displayed. In the present embodiment, similar to the target icons shown in FIGS. 3 to 14, the number of types of target objects to be alarmed is increased, although it is common to color-code according to the type of target (emergency / importance). In accordance with the change, it was divided into four types (red, yellow, blue, green). A specific example is as shown in FIG. The red color is a target related to the speed measuring device as in the case of FIG.

  Furthermore, in this example, the target icon is varied according to the type of the target. Thereby, it is possible to know what the target is just by looking at the target icon. Specifically, it is as shown in FIG. Further, the example shown in FIG. 17 is a mode of displaying on the main display area R1 in the target icon display mode. In the target icon non-display mode (only the focus icon is displayed), a slightly smaller circle, A mark consisting of a simple figure such as a square is displayed. Such a mark corresponds only to the color. In other words, for example, the icons indicating the red icons “loop coil”, “LH system”, “H system”, and “radar-type orvis” correspond to those shown in FIG. 17 in the target icon display mode. Since the target icon to be displayed is displayed, it is possible to know what target is present simply by looking at the target icon. On the other hand, in the target icon non-display mode, the above four types of targets are both small red marks, and the type cannot be specified only by looking at the marks. However, since it is a red mark, it can be recognized that some speed measuring device exists.

  The type of each target, the target icon, and the mark to be displayed in the target icon non-display state are stored in a storage unit such as a storage device / ROM incorporated as a table in which they are associated. Since information about each target (position, type, etc.) is registered in the database 19, when the control unit 18 detects a target to be displayed, it recognizes the type and accesses the storage means. Thus, the corresponding target icon or mark at the time of non-display is acquired (which is determined according to the current target icon display / non-display mode status) and displayed at the corresponding position in the main display area R1.

  Thereby, in the target icon display mode, as shown in FIG. 18A, when there are a plurality of targets in the display area, target icons (T1 to T6) corresponding to the respective types are displayed. In this example, the focus icon F is notified by being sandwiched between a pair of triangular instruction marks (arrow marks) S. Of course, the focus icon F may be blinked to obtain attention.

  For the pair of triangular instruction marks S, when there is a change in the target of the focus icon (for example, when there is a change in the target of the focus icon from T2 to T1 in FIG. 18), before the change Guidance display (guidance drawing) is performed from the position where the focus icon is sandwiched to the position where the changed focus icon is sandwiched. The guidance display is performed by drawing the instruction mark so as to smoothly move to the vicinity of the changed focus icon. At this time, it is preferable to perform drawing by smoothly moving the instruction mark while avoiding drawing positions of other target icons and small marks. In this way, it is easy to understand to which target icon the target of the focus icon has been changed.

  On the other hand, in the target icon non-display mode, as shown in FIG. 18B, except for the focus icon F, a small mark is displayed at the target position. As a result, the user can watch the presence of the focus icon F. Furthermore, since a small mark is displayed for a target other than the focus icon F, it can be known that there is some target other than the focus icon. Moreover, since the color of each mark corresponds to the color of the target icon, it is possible to predict the urgency and approximate contents (type) of other detected targets.

  Furthermore, in the case where information on the target to be registered in the database 19 relates to the direction in which various speed measuring devices, N system, traffic monitoring system, etc. are installed, the installation direction (monitoring direction, measurement direction) is also included. Stored. When the installation direction is registered in association with the target displayed as the focus icon F, the installation direction is displayed as an “arrow”.

  Switching between the display mode and the non-display mode of the target icon is performed by operating the remote controller and / or operating the switch unit 3. By providing the function of switching the display / non-display mode in this way, the user can select whether to display all target icons or only one focus icon. Therefore, the user can easily switch the display mode without taking the trouble of setting the operation for each icon. Therefore, the user can easily switch to the display of only the focus icon, for example, when the mark display density is high and the radar scope screen is congested and difficult to understand. Conversely, if you set the target icon non-display mode and want to know what the target of the simple display displayed with a small mark is, what is it even on the target that is not in focus by switching to the target icon display mode? Can be known with a simple operation.

  In the above embodiment, in the target icon display mode, all corresponding targets are displayed as target icons. At this time, when overlap occurs, control is performed so that important things are displayed on the near side in consideration of priority and urgency, as in the embodiments in FIG.

  The target icon display / non-display mode may be switched by the user's manual operation as described above. For example, a function of automatically switching the display mode according to the display density may be provided. good. In order to perform such processing, for example, when the number of targets to be displayed in the main display area R1 exceeds a set threshold value, the display mode is switched to the non-display mode, the target icons to be displayed overlap, This can be realized by switching to the non-display mode when the number exceeds a certain level. In this way, the user can obtain a radar scope display in which the target is always easy to see without performing a switching operation.

  In the above embodiment, the type of target to be displayed is determined by the setting of “drive mode / local mode / all-on mode”, and in the target icon display mode, all corresponding targets are targeted. In the target icon non-display mode, all the target objects except for the focus icon are displayed as small marks. The present invention is not limited to this, and a display mode (target icon display / small mark display) is set for each type of target by a user's remote control operation or the like, and the set information is stored in the database 19 or the like. . And even if it is target icon display mode, the control part 18 is controlled to display a small mark about the target concerned according to said setting. As a result, while increasing the types of targets to be monitored, targets that are less important to the user can be displayed with a small mark and only their presence can be indicated, and targets with higher importance can be displayed as target icons. In particular, it is possible to efficiently recognize a target to be known. Therefore, a user-friendly display mode can be provided. Of course, a display mode may be set for each type of target in an apparatus that does not have a target icon display / non-display mode switching function.

  Furthermore, an automatic lock-on function may be provided. The automatic lock-on function selects one target with a high degree of urgency and performs tracking display in the main display area R1 until the target is out of the alarm range. Specifically, the control unit 18 selects a target with high urgency level to be tracked. This selection process can be performed according to the same conditions as the selection of the focus icon F, for example. Then, the scale is dynamically changed so that the target to be tracked is not located outside the main display region R1 (for example, the state shown in FIG. 9) while being within the warning range. Or moving the screen center position (see FIG. 13) so that the target is always displayed in the main display area R1.

  FIG. 19 shows an example of a display screen at the time of alarm. In the present embodiment, the display is divided into four areas at the time of alarm. That is, a main display area R1 having a circular target display screen (actually displayed as a part of a circle) centered on the own vehicle progress icon I0, a message / icon display area R4, and a symbol display area R5 And an animation screen display region R6. More specifically, the symbol display area R5 and the animation screen display area R6 are arranged vertically on the left side of the normal main display area R1. Both the display areas R5 and R6 become an alarm screen, and the alarm screen is gradually displayed from the left end at the time of alarm (for example, slide-in display is performed). Accordingly, the display space of the main display region R1 moves to the right side and becomes narrower. By adopting the slide-in method in this way, it is possible to draw more attention, but it is not always necessary to adopt the slide-in method, and the screen may be switched suddenly.

  Here, the symbol display area R5 is an area for displaying a still image indicating the content of the focused target (target object). The animation screen display area R6 is an area for displaying a moving image in an easy-to-understand manner what the focused target is. Still images and moving images to be displayed in each area are stored in the database 19 or predetermined storage means in association with the type of target, and the control unit 18 causes the focused target to approach a certain distance from the host vehicle. When the condition for displaying the alarm screen is satisfied, the control unit 18 reads the corresponding still image and moving image stored in the storage unit and displays them on the display screen.

  In this way, the alarm screen is displayed while maintaining the continuity of the display state of the target display screen, so that the alarm and the target position can be known simultaneously without losing sight of the target position. In this embodiment, two types of alarm screens, a still image (symbol) and a moving image (animation screen), are prepared and displayed at the same time, but only one of them may be displayed.

  As described with reference to FIG. 14, in the embodiments after FIG. 2, the target display screen can be used as a standby screen or an alarm screen. When the target display screen is an alarm screen, the alarm screens in the symbol display area R5 and the animation screen display area R6 in the present embodiment can be alarm screens with higher urgency (emergency alarm screen / emergency warning screen). .

  That is, for example, the control unit 18 normally displays a standby screen as shown in FIG. 20A and detects a target (target object) in this state (when the first predetermined distance is reached). Control is performed to switch to the target display screen shown in FIG. In this way, the user can usually enjoy the selected standby screen, and the target display screen is displayed only when the object is detected, which is highly convenient.

  Next, when the target approaches the host vehicle while the target display screen is being displayed (when the target reaches a second predetermined distance (<first predetermined distance)), as shown in FIG. Control is performed so as to display an alarm screen including a symbol display area R5 and an animation screen display area R6 together with the target display screen.

  When the target is out of the set area area, the control unit 18 controls to switch to the standby screen. Here, the setting area can be set to various types such as a secondary plane display area, a circular area, and a separately set area. By returning to the standby screen in this way, it can be easily understood that the target has moved away.

  More preferably, a predetermined sound is emitted when the screens are switched. By generating the sound in this way, the user can know that the situation has changed, and can know the content at a good timing by looking at the screen. Furthermore, it is better to have a different sound at each switching. In particular, the sound when switching from (b) to (c) is more urgent than when switching from (a) to (b) in FIG. 20 (volume, tone, pitch, melody, voice content, etc. ). In this way, it is possible to grasp the degree of attention without looking at the screen with sound.

  By providing the above-described three types of screen switching functions, the user can change the alarm mode in a stepwise and automatic manner as the target approaches, and can obtain appropriate information according to the situation on the spot. Of course, the present invention does not necessarily include the three-step switching as described above, and display / non-display for each display screen can be arbitrarily set.

  Further, in each of the above-described embodiments, since the orientation of the target display screen displayed in the main display region R1 is a heading-up display in which the traveling direction is up, the control unit 18 moves on the arc according to the change in the traveling direction. Control is performed so that a mark indicating an orientation (“N”, “E”, “W”, “S”, etc.), a target icon, and the like are smoothly rotated and displayed (see FIG. 21). In particular, when position information is acquired from the GPS receiver 8 at predetermined time intervals (for example, every 1 second), the traveling direction of the acquired vehicle suddenly discontinuously moves, for example, from north to east. However, even in such a case, the target icon can be prevented from losing sight of the target by smoothly rotating and displaying the target icon.

  In addition, the display mode is not limited to the heading-up display in this way, and as shown in FIG. 22, for example, a north-up display in which north is always displayed on the top can be adopted. Then, it is preferable to display both the heading-up display and the north-up display, and to select and display either of them according to the user's setting. Of course, either one may be fixed, or another display mode may be used.

  Further, even in the case of north-up setting, when the display mode in which the alarm screen is interrupted on the left side of the screen is taken, the target icon display screen in the main display region R1 becomes narrow in the horizontal direction. Thus, when the vehicle travels in the east direction and there is a target in front of the vehicle, the target may be located outside the display area. Therefore, as shown in FIG. 23B, when the alarm screen is interrupted on the left side of the screen, the control unit 18 controls to automatically switch to the heading-up display. Thereby, even if the target display screen of the main display region R1 is narrowed in the horizontal direction, the target can easily fit within the screen.

  FIG. 24 shows an example of another display mode of the main display region R1. For example, when the positional relationship between the target object with the focus icon set and the host vehicle matches a predetermined alarm condition, the entire screen of the main display area R1 is light red and the host vehicle progress icon I0 is the center. A plurality of fan-shaped areas are displayed in dark red, and the fan-shaped areas are rotated around the own vehicle progress icon I0. In this way, it is possible to create an atmosphere such as a red rotating light of an emergency vehicle, and it is easy to understand that an alarm has occurred. Note that the alarm condition may be, for example, close to a second predetermined distance or less as a reference for displaying the alarm screens R5 and R6, or other different conditions may be set.

  Furthermore, the display of the target display screen displayed in the main display region R1 and the alarm lamp 6 may be linked. For example, the alarm lamp 6 is controlled to blink in synchronization with the blinking of the target icon. In this way, it is very easy to understand that an alarm has occurred, and since the display associated with the lighting state of the alarm lamp 6 is also made on the target display screen, the user can more easily specify the position of the target. Further, the alarm lamps 6 can be arranged on both the left and right sides, and lighting of the left and right alarm lamps 6 can be controlled based on the display position of the target. Specifically, for example, the right alarm lamp blinks when the target display position is a predetermined width or more right from the central axis, and the left alarm lamp blinks when the target display position is a predetermined width or more from the central axis. . And when it is within a predetermined width from the central axis, control is performed so that both the right and left alarm lamps blink. By doing so, the location where the alarm is generated becomes extremely easy to understand. Moreover, since the target position in the target display screen can be estimated from the lighting state of the alarm lamp, the target display position can be easily specified. In addition, when such a function is provided, it is preferable that only some types of targets be associated with the lighting of the warning lamp. In this case, the user sets the type of target for which the warning lamp is lit by a remote control operation or the like. You should be able to do it.

  FIG. 25 shows another embodiment of the present invention. In this embodiment, a thin rectangular case body 30 is used, a large display portion 6 is provided on the rear surface of the case body, and alarm lamps 6 are provided on both sides of the rear surface. An SD card memory slot 31 is provided on the side surface, and an SD memory card in which map data or the like is recorded can be inserted into the slot 31. The present embodiment has a navigation system function in addition to the target object warning device, and performs map data when performing such navigation using map data stored in the SD memory card. Yes. In addition, a USB terminal is provided on the side opposite to the SD card memory slot 31 so that the software application can be upgraded by connecting to a personal computer.

  FIG. 26 shows functional blocks of the present embodiment. This is basically the same as the embodiment shown in FIGS. 1 and 2, and includes a touch panel 21 and a USB terminal (connection unit) 22. The dimension shape of the display unit 5 is further increased. In addition, the same code | symbol is attached | subjected about the thing similar to embodiment shown in FIG. 1, FIG. 2, and the description is abbreviate | omitted.

  27 and 28 show an example of the display layout in the display unit 5 of the present embodiment. FIG. 27 shows that the vehicle position information and the position information of a plurality of targets can be displayed on the secondary plane, and is common to the embodiment of FIGS. The display form shown in FIG. 27 is different from the above-described embodiment, and the entire monitoring area of the circle whose center is the vehicle position can be displayed on the display unit 5. Since the whole can be displayed in this way, there is no scroll function. Moreover, the display in this embodiment is not always the traveling direction of the own vehicle, but north is always displayed on the top. Thus, a cursor K for specifying a range of ± predetermined angle with respect to the traveling direction of the host vehicle is displayed, and the cursor K rotates as the traveling direction of the host vehicle changes.

  The radius of the monitoring area of the circle can also be changed in this embodiment. When a target exists in this monitoring area, a target icon Tn is displayed at the corresponding position. When the target has directionality, the shape of the target icon is a triangle (T2 icon in the figure).

  Further, for a predetermined number (for example, five) of the most important icons, the target information (target name, distance) is displayed outside the circular display area, and the target information and the target are displayed. The icon is connected with a line. Since a plurality of target icons are also displayed in this way, the user can see at a glance what kind of target exists around his / her vehicle, and information on the target is displayed in the margin for those with high importance. So you can know the specific contents.

  FIG. 28 shows another display layout. In this example, map information is displayed and a navigation function is activated. If there is a target that matches the alarm condition based on information acquired by the GPS receiver 8, the microwave receiver 4, or the like at the lower end of the display unit 5, a message is output as text information. Further, a target icon Tn is displayed for a target existing in the vicinity.

  Furthermore, as a display function in the navigation system, the parking prohibited area is displayed in a different color. The priority area / route and the highest priority area / route are also displayed in different colors so as to distinguish them.

4 Microwave receiver 5 Display unit 8 GPS receiver 18 Control unit 19 Database

Claims (8)

Position detecting means for detecting the position of the own vehicle;
A database for storing position information of the target;
Extraction means for extracting a target object to be displayed based on position information detected by the position detection means and position information of the target object stored in the database;
A display unit for displaying the position information of the target extracted by the extraction means and the vehicle position information;
The display unit is configured to notify the position of the target and the current position of the vehicle by a mark arranged on the secondary plane,
The area to be notified by the mark arranged on the secondary plane includes a north up display mode in which north is displayed up and a heading up display mode in which the traveling direction of the vehicle is up,
In the display unit, when the position of the vehicle and the position of the target object satisfy a set alarm condition, another alarm area is displayed together with an area informing by a mark arranged on the secondary plane. Configured to display ,
An area to be notified by a mark arranged on the secondary plane when the other warning area is displayed while the area to be notified by a mark arranged on the secondary plane is displayed in the north-up display mode. A target detection apparatus having a function of switching to heading-up display.   A process is performed for selecting one target that matches a selection condition for determining a target to be noticed from a plurality of targets existing in a region to be notified by a mark arranged on the secondary plane. The target object detection apparatus according to claim 1, wherein the target object detection device is controlled so as to be displayed in a display area of the display unit until the alarm range is exceeded.   3. The display device according to claim 2, wherein a display mode for displaying the target mark for all targets and a display mode for displaying the target of interest are selected. Target detection device.   4. The display device according to claim 2, wherein a simple mark is displayed for another target in a display mode in which the display of the target mark is performed for the one target to be noted. Target detection device.   Information on the type of road on which the target is installed is stored, display mode for displaying only the target on a general road, display mode for displaying only a target on an expressway, or display mode for displaying both The target object detection apparatus according to claim 1, wherein a target object corresponding to the mode is displayed.   When the position of the vehicle and the position of the target object satisfy the set alarm condition, the display color of the area to be notified by the mark arranged on the secondary plane is changed, and the position of the vehicle is The target detection apparatus according to claim 1, wherein a part that rotates as a center is displayed. An alarm lamp,
The target detection according to any one of claims 1 to 6, wherein the light emission state of the alarm lamp is interlocked with a display state of a mark of a target object to be noted on the display unit. apparatus. A program for causing a computer to realize the function as the target object detection device according to any one of claims 1 to 7.

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