JP6235810B2 - OBE - Google Patents

Description

  The present invention relates to a vehicle-mounted device used by being mounted on a vehicle.

  2. Description of the Related Art Conventionally, an in-vehicle device that outputs an alarm by voice or the like when measuring the distance between the host vehicle and a preceding vehicle while traveling and identifying that both vehicles are approaching is known. (For example, refer to Patent Document 1). Thereby, the driver can be alerted to the vehicle ahead.

JP 2002-170200 A

  In the vehicle rear-end collision warning system described in Patent Document 1, when the traveling speed of the vehicle is equal to or lower than a predetermined speed (for example, when the vehicle is traveling slowly or stopped), the alarm output process is not performed.

  However, even when the vehicle is slowing down or stopped, when the vehicle approaches the vehicle in front of a traffic jam or when the vehicle is approaching the vehicle from the parking lot In some cases, it is preferable to output a warning to alert the driver to the vehicle ahead.

  This invention is made | formed in view of the situation mentioned above, The objective is to provide the vehicle-mounted device which can call a driver | operator's attention even if it is stopping or slowing down.

In order to achieve the above-described object, the vehicle-mounted device according to the present invention is characterized by the following points.
(1) a distance information acquisition unit that acquires information for measuring a distance between the host vehicle and a surrounding vehicle;
A speed information acquisition unit for acquiring information for calculating the traveling speed of the host vehicle;
A location information acquisition unit for acquiring information for identifying the travel location of the host vehicle;
An alarm output unit that outputs alarms at various alarm levels;
A control unit connected to each of the distance information acquisition unit, the speed information acquisition unit, the location information acquisition unit, and the alarm output unit;
A vehicle-mounted device used by being mounted on the host vehicle,
The control unit is configured such that the traveling location of the host vehicle identified based on information from the location information acquisition unit is located in any one of a plurality of predetermined types of regions, and The travel speed of the host vehicle calculated based on the information from the speed information acquisition unit is smaller than a predetermined speed threshold that can be considered that the host vehicle is stopped or slowing down , and the distance information acquisition unit If the inter-vehicle distance measured based on information from the vehicle is smaller than a distance threshold corresponding to the type of the region where the identified travel location of the host vehicle is located , the identified travel location of the host vehicle is located. The alarm output unit outputs the alarm at an alarm level corresponding to the type of region ,
The distance threshold and the warning level are different for each type of region, and are set so that the warning level decreases as the distance threshold increases corresponding to the type of region .
(2) The vehicle-mounted device according to (1) above,
As the type of the area, at least a parking lot and a signal area are defined, and the warning level output from the warning output unit when the travel location of the host vehicle is located in each of these areas is a parking lot, It is set so that it becomes lower in the order of signal area.
(3) The vehicle-mounted device according to any one of (1) and (2) above,
As the type of the area, at least a parking lot and a traffic jam location are defined, and the warning level output from the warning output unit when the travel location of the host vehicle is located in each of these areas is a parking lot, It is set to be lower in the order of traffic jams.

According to the vehicle-mounted device having the above configuration (1), when the traveling speed of the host vehicle is smaller than the predetermined speed threshold and the distance between the host vehicle and the surrounding vehicle is smaller than the predetermined distance threshold, An alarm is output by the alarm output unit. Thus, the value of the velocity threshold, the vehicle is set to a value at that regarded as or in a slow speed during a stop, the driver outputs an alarm even or in slow speed during a stop Can call attention. Furthermore, since warnings are output at different warning levels according to the type of area where the traveling location of the host vehicle is located, the driver can be alerted at a warning level suitable for a place where the vehicle is stopping or slowing down.
In addition, as a surrounding vehicle, the vehicle etc. which are located in a back vehicle or a side other than a front vehicle are assumed. Further, as an alarm output from the alarm output unit, an alarm based on a message using a display unit, an alarm based on light emission using a light emitting unit, and the like are assumed in addition to an audio alarm. As a method for changing the alarm level, the size of the output message, the size of the message to be displayed, the intensity of the emitted light, and the like are assumed.
According to the vehicle-mounted device having the above configuration (2), the alarm level can be lowered in the order of the parking lot and the signal area. Therefore, it is high when the driver stops in front of the signal in compliance with the laws and regulations. It is possible to prevent the driver from feeling annoyed by notifying the alarm at the alarm level. Moreover, since the alarm level is high in the parking lot, it is possible to appropriately avoid the danger of a collision when starting.
According to the vehicle-mounted device having the configuration (3), the alarm level can be lowered in the order of the parking lot and the traffic jam location. Therefore, when the vehicle is parked in the vicinity of the surrounding vehicle due to the traffic jam, the alarm level is increased. This can prevent the driver from being irritated. Moreover, since the alarm level is high in the parking lot, it is possible to appropriately avoid the danger of a collision when starting.

  ADVANTAGE OF THE INVENTION According to this invention, even if it is in a stop or slowing down, the vehicle equipment which can call a driver | operator's attention can be provided.

  The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

FIG. 1 is a diagram illustrating the vehicle-mounted device according to the present embodiment and the host vehicle on which the vehicle-mounted device is mounted. FIG. 2 is a conceptual diagram conceptually showing an alarm operation by the vehicle-mounted device of FIG. FIG. 3 is a block diagram illustrating a hardware configuration example of the vehicle-mounted device of FIG. 4A shows the contents of the threshold table, and FIG. 4B shows the contents of the alarm level table. FIG. 5 is a flowchart showing an approach warning operation procedure. FIG. 6 is a diagram illustrating an example of an image captured by the in-vehicle camera. FIG. 6A is a diagram illustrating an example when the vehicle is not approaching, and FIG. 6B is a diagram illustrating an example when the vehicle is approaching. FIG. 7 is a diagram illustrating an example of a region identified as a travel location, and FIG. 7A is a diagram illustrating an example of an image captured by the in-vehicle camera when the vehicle is stopped in the signal region, and FIG. These are figures which show the location registered as a parking lot on a map.

Hereinafter, the vehicle-mounted device according to the present embodiment will be described with reference to the drawings.
FIG. 1 is a diagram illustrating an on-vehicle device according to the present embodiment and a host vehicle on which the on-vehicle device is mounted, and FIG. 2 is a conceptual diagram conceptually illustrating an alarm operation by the on-vehicle device of FIG.

  As shown in FIG. 1, the vehicle-mounted device 10 is a vehicle-mounted device that is used by being mounted on the host vehicle 5, and has a basic function as, for example, a digital tachograph, a drive recorder, or a taximeter. For example, in the present embodiment, the vehicle-mounted device 10 has a function of sequentially acquiring the traveling speed, traveling location, and the like of the host vehicle 5 and recording them as operation data in the memory card 35. The host vehicle 5 is provided with a vehicle-mounted camera 30 connected to the vehicle-mounted device 10. As shown in FIG. 2, the vehicle-mounted device 10 measures the inter-vehicle distance between the host vehicle 5 and the preceding vehicle 8 during traveling, and outputs a warning by voice when both vehicles are approaching. It has a function as a vehicle rear-end collision warning system. In the present embodiment, the vehicle-mounted device 10 measures the inter-vehicle distance between the host vehicle 5 and the preceding vehicle 8 even when the vehicle is stopped or slowing down as described below, and both vehicles are approaching. The function is further provided to output an alarm by voice when the user is identified.

  FIG. 3 is a block diagram illustrating a hardware configuration example of the vehicle-mounted device of FIG. As shown in FIG. 3, the vehicle-mounted device 10 includes a control unit 11, an image processing unit 13, a speed interface (I / F) 14, an engine I / F 15, a GPS (Global Positioning System) _I / F 16, a G sensor 17, and a power source. I / F 18, speaker 19, LCD (Liquid Crystal Display) _I / F 21, RAM (Random Access Memory) 22, program ROM (Read Only Memory) 23, data ROM 24, data processing unit 25, card I / F 26, etc. ing.

  The control part 11 is comprised by CPU (Central Processing Unit), for example, and controls operation | movement of the onboard equipment 10 whole. The RAM 22 stores temporarily used data and is used as a work area for the control unit 11. The program ROM 23 holds a control program executed by the control unit 11 and the like. In addition to the threshold value table 43 and the alarm level table 45 (see FIG. 4 described later), the data ROM 24 holds fixed data such as a speed threshold value described later and registered parking lot position data.

  The image processing unit 13 is connected to a vehicle-mounted camera 30 that captures the front of the host vehicle 5 in the traveling direction. The image processing unit 13 performs image recognition processing on the image data captured by the in-vehicle camera 30 and identifies the presence or absence of the forward vehicle 8. Further, when the image processing unit 13 identifies the front vehicle 8 in the image, for example, from the area occupied by the specific portion (for example, a license plate) of the front vehicle 8 in the image, The inter-vehicle distance is measured (see FIG. 6 described later). That is, the image processing unit 13 functions as a distance information acquisition unit that acquires information for measuring the inter-vehicle distance between the host vehicle 5 and the preceding vehicle 8. Further, the image processing unit 13 performs image recognition processing on the image data captured by the in-vehicle camera 30, and identifies the presence or absence of a traffic signal (see FIG. 7 described later). The presence or absence of this traffic light is used to identify whether or not the vehicle travel location (stop location) is a signal area, as will be described later. That is, the image processing unit 13 also functions as a location information acquisition unit that acquires information for identifying the current travel location of the host vehicle 5.

  The LCD_I / F 21 is connected to a liquid crystal display 32 that displays various types of information on a display screen. The liquid crystal display 32 may be provided outside the housing of the vehicle-mounted device 10 or may be disposed on the front surface of the housing.

  The speed I / F 14 receives a speed pulse signal output from a speed sensor (not shown) mounted on the host vehicle 5 and outputs the speed pulse signal to the control unit 11. The control unit 11 calculates the current traveling speed of the host vehicle 5 based on the speed pulse signal received from the speed I / F 14. That is, the speed I / F 14 functions as a speed information acquisition unit that acquires information for calculating the traveling speed of the host vehicle 5. Further, as will be described later, the control unit 11 identifies whether or not the travel location of the host vehicle 5 is a traffic jam location based on the speed pulse signal received from the speed I / F 14. That is, the speed I / F 14 also functions as a location information acquisition unit that acquires information for identifying the travel location of the host vehicle 5. The engine I / F 15 receives an engine pulse signal output from the engine speed sensor and outputs the engine pulse signal to the control unit 11.

  The GPS_I / F 16 receives GPS data transmitted from a GPS satellite, and outputs the current position information of the vehicle obtained from the GPS data to the control unit 11. As will be described later, the current position information is used as information for identifying the travel location of the vehicle by comparing with the registered position data of the parking lot. That is, the GPS_I / F 16 also functions as a location information acquisition unit that acquires information for identifying the current travel location of the host vehicle 5. The G sensor 17 detects an impact (acceleration) applied to the vehicle 5 and outputs acceleration information to the control unit 11.

  A memory card 35 is detachably connected to the card I / F 26. The data processing unit 25 is an interface for executing various data processing such as data transfer with respect to the memory card 35 connected to the card I / F 26.

  The power supply I / F 18 receives a signal from an ignition switch connected to the battery and outputs the state of the ignition switch to the control unit 11. The speaker 19 is configured to be able to output sound. As will be described later, this sound is used for alarming the approach of the preceding vehicle. That is, the speaker 19 functions as an alarm output unit that outputs an alarm.

  4A shows the contents of the threshold table, and FIG. 4B shows the contents of the alarm level table. The threshold value table 43 and the alarm level table 45 are stored in the data ROM 24 described above.

  In the threshold value table 43, distance threshold values used when determining whether or not the host vehicle 5 and the preceding vehicle 8 are approaching are the parking lot, the location in front of the traffic light (signal area), the traffic congestion location, and other 4 It is registered separately for each case. That is, in this embodiment, a parking lot, a signal area, and a traffic jam location are defined as a plurality of types of areas for identifying the travel location of the host vehicle 5, and different distance thresholds for these various areas. Is stipulated. Specifically, the distance threshold is set to 0.5 m in the parking lot. In the signal area, the distance threshold is set to 1 m. In a traffic jam, 5 m is set for a general road and 10 m is set for a highway. Whether the travel location is a general road or an expressway can be specified based on information from, for example, an ETC (Electronic Toll Collection System) vehicle-mounted device. In other places, the distance threshold is a fixed value of 4 m. Thus, in this embodiment, since the distance threshold value used for determination when starting the output of an alarm is changed according to the type of travel location, when the driver is consciously approaching the forward vehicle 8, etc. It is possible to prevent the driver from feeling bothered by giving an alarm.

  In the alarm level table 45, alarm levels are registered separately for four cases: parking lot, signal area, traffic jam location, and others. That is, in the parking lot, when the inter-vehicle distance is equal to or less than the distance threshold (0.5 m), an alarm is issued at the alarm level a. In the signal area, when the inter-vehicle distance is equal to or less than the distance threshold (1 m), an alarm is issued at the alarm level b. Further, when the inter-vehicle distance is equal to or less than the distance threshold (5 m / 10 m) in a traffic jam location, an alarm is issued at an alarm level c. In other places, an alarm is issued at an alarm level d.

  At the alarm level a, a beep sound is generated at a relatively large volume. At alarm levels b and d, a beep sound is generated at a medium (normal) volume level that is smaller than alarm level a. At alarm level c, a beep sound is generated at a lower volume than alarm levels b and d. That is, in this embodiment, the alarm level is set to be lower in the order of the parking lot, the signal area, and the traffic jam location by decreasing the volume in order. Thus, in this embodiment, since the alarm level is changed according to the type of travel location, the driver can be alerted with an alarm level suitable for the location where the vehicle is stopping or driving slowly. In this embodiment, the alarm level is changed by changing the volume of the warning sound. However, the alarm level may be changed by changing the type of sound, for example, the pitch or tempo.

  Then, operation | movement of the onboard equipment 10 which has the said structure is demonstrated. FIG. 5 is a flowchart showing an approach warning operation procedure of the vehicle-mounted device. This operation program is stored in the program ROM 23 and executed by the control unit 11.

  First, the control part 11 determines whether the own vehicle 5 is a stop state (step S1). More specifically, the control unit 11 calculates the current traveling speed of the host vehicle 5 based on the speed pulse signal received from the speed I / F 14, and determines whether the calculated traveling speed is smaller than a predetermined speed threshold. Is determined. The speed threshold may be set to a value that can be considered that the host vehicle 5 is stopped, for example, 1 km / h. As a result of the determination, when the vehicle is not stopped, the control unit 11 repeats the process of step S1. In the present embodiment, it is determined whether or not the host vehicle 5 is in a stopped state. However, instead of stopping, it may be configured to determine whether or not the host vehicle 5 is traveling slowly. In this case, the speed threshold value can be set to 5 km / h, for example.

  On the other hand, when the host vehicle 5 is in a stopped state, the control unit 11 determines whether there is another vehicle ahead in the traveling direction of the host vehicle 5 (step S2). More specifically, the control unit 11 determines whether or not the forward vehicle 8 is in the image captured by the in-vehicle camera 30. When there is no preceding vehicle, the control unit 11 returns to the process of step S1.

  On the other hand, when there is a forward vehicle 8, the control unit 11 includes the current position information of the host vehicle 5 obtained from GPS data input via the GPS_I / F 16, and the parking lot position data stored in the data ROM 24. From this, it is determined whether or not the current travel location is a parking lot (step S3).

  When the current travel location is a parking lot, the control unit 11 refers to the threshold value table 43, and the distance between the host vehicle 5 and the preceding vehicle 8 that is grasped from the captured image is a distance threshold value corresponding to the parking lot ( Here, it is determined whether it is smaller than 0.5 m (step S4). When the inter-vehicle distance is equal to or greater than the distance threshold, the control unit 11 returns to the process of step S1.

  On the other hand, when it is within the distance threshold, the control unit 11 refers to the alarm level table 45 and generates an approach alarm at an alarm level (alarm level a) corresponding to the parking lot that is the stop location (step S5). Thereafter, the control unit 11 returns to the process of step S1.

  When the current position is not a parking lot in step S3, the control unit 11 is in a state where the vehicle is stopped in the signal area by determining whether or not there is a traffic light in the image captured by the in-vehicle camera 30. Whether or not (step S6). In a state where the vehicle is stopped in front of the traffic signal, the control unit 11 refers to the threshold value table 43 and the alarm level table 45, sets the distance threshold value to 1 m, sets the alarm level to the alarm level b, and performs steps S4 and S5 described above. Perform the process.

  On the other hand, when not waiting for a signal in step S6, the control unit 11 determines from the average hourly speed from the previous time to the present time of the host vehicle 5 obtained through the speed I / F 14 for a predetermined time (for example, 5 minutes). It is determined whether or not the travel location is a traffic jam location (step S7). When the travel location is a traffic jam location, the control unit 11 refers to the threshold value table 43 and the alarm level table 45, sets the distance threshold value to 5 m / 10 m, sets the alarm level to the alarm level c, and performs the processes of steps S4 and S5 described above. Do.

  On the other hand, if the travel location is not a traffic jam location in step S7, that is, if it is another location, the control unit 11 determines a uniform distance threshold (4 m in this embodiment), alarm level (in this embodiment). , Alarm level d.), The processes of steps S4 and S5 are performed. Note that when the travel location is another location, the alarm may not be output and the process may return to step S1.

  FIG. 6 is a diagram illustrating an example of an image captured by the in-vehicle camera. FIG. 6A is a diagram illustrating an example when the vehicle is not approaching, and FIG. 6B is a diagram illustrating an example when the vehicle is approaching. In the state shown in FIG. 6A, the forward vehicle 8 is recognized in the square frame 52, but the inter-vehicle distance calculated based on the size of the license plate is larger than the distance threshold, and no alarm is output. On the other hand, in the state shown in FIG. 6B, the front vehicle 8 is recognized by the square frame 52, and the warning is output because the inter-vehicle distance is smaller than the distance threshold.

  FIG. 7 is a diagram illustrating an example of a region identified as a travel location, and FIG. 7A is a diagram illustrating an example of an image captured by the in-vehicle camera when the vehicle is stopped in the signal region, and FIG. These are figures which show the location registered as a parking lot on a map. In the state shown in FIG. 7A, the traffic light 54 is recognized in the rectangular frame 53, and it is determined that the signal is waiting. As shown in FIG. 7B, the location of the parking lot is registered in advance in a range surrounded by a dotted frame 58 on the map as indicated by a mark 56. In this point registration, latitude, longitude, address, and radius are registered as position data 61.

  According to the vehicle-mounted device 10 of the present embodiment having the above-described configuration, the traveling speed of the host vehicle 5 is smaller than a predetermined speed threshold, and the distance between the host vehicle 5 and the preceding vehicle 8 is a predetermined distance threshold. When it becomes smaller than this, an alarm is output from the speaker 19. Thus, even when the host vehicle 5 is stopped or slowing down, an alarm can be output to alert the driver. Furthermore, since warnings are output at different warning levels according to the type of area where the traveling location of the host vehicle 5 is located, the driver can be alerted at a warning level suitable for a place where the vehicle is stopping or slowing down.

  Moreover, according to the vehicle-mounted device 10 of the present embodiment, since the alarm level is low in the order of parking lot, signal area, and traffic jam location, an alarm is issued at a high alarm level when the driver is consciously approaching a surrounding vehicle. This can prevent the driver from feeling annoyed. For example, since the alarm level is low at a traffic jam location, attention can be urged without irritation of the driver. Moreover, since the alarm level is high in the parking lot, it is possible to appropriately avoid the danger of a collision when starting.

Below, the onboard equipment 10 which concerns on this embodiment is summarized.
(1) The vehicle-mounted device 10 according to the present embodiment includes an image processing unit 13 as a distance information acquisition unit that acquires information for measuring a distance between the host vehicle 5 and a front vehicle 8 that is a surrounding vehicle, Location information acquisition for acquiring information for identifying the travel location (stop location) of the host vehicle 5 and the speed I / F 14 as a speed information acquisition unit that acquires information for calculating the travel speed of the host vehicle 5 An image processing unit 13 as a unit, a speed I / F 14 and a GPS_I / F 16, a speaker 19 as an alarm output unit that outputs an alarm at various alarm levels, the image processing unit 13, the speed I / F 14, and the image processing And a control unit 11 connected to each of the unit 13, the speed I / F 14, the GPS_I / F 16, and the speaker 19, and is an on-vehicle device mounted on the host vehicle 5 and used. Then, the control unit 11 determines whether the traveling location of the host vehicle 5 identified based on the information from the image processing unit 13, the speed I / F 14 and the GPS_I / F 16 is a plurality of predetermined areas (parking lots). The travel speed of the host vehicle 5 calculated based on the information from the speed I / F 14 is smaller than a predetermined speed threshold value. In addition, when the inter-vehicle distance measured based on the information from the image processing unit 13 is smaller than a predetermined distance threshold, the alarm level corresponding to the type of the area where the travel location of the identified host vehicle 5 is located is used. The alarm is output to the speaker 19.
(2) In the vehicle-mounted device 10 according to the present embodiment, a parking lot and a signal area are defined as the type of the area, and when the travel location of the host vehicle 5 is located in each area, the speaker 19 The output alarm level is set so as to decrease in the order of the parking lot (alarm level a) and the signal area (alarm level b). For this reason, it is possible to prevent the driver from feeling bothered by giving an alarm at a high alarm level when the driver is observing the laws and regulations and stopping before the signal.
(3) In the vehicle-mounted device 10 according to the present embodiment, a parking lot and a traffic jam location are defined as the type of the area, and when the travel location of the host vehicle 5 is located in each of these areas, the speaker 19 The alarm level to be output is set so as to decrease in the order of parking lot (alarm level a) and traffic jam location (alarm level c). For this reason, it is possible to prevent the driver from being irritated by giving a warning at a high warning level when the vehicle is stopped in the vicinity of the surrounding vehicle due to a traffic jam.

  The technical scope of the present invention is not limited to the embodiment described above. The above-described embodiments can be accompanied by various modifications and improvements within the technical scope of the present invention.

  For example, in the above-described embodiment, as a region identified as a travel location (stop location), a traffic jam location, a location in front of a traffic signal (signal region), and a parking lot are given as examples. You may further define the location.

  Moreover, in the said embodiment, although it was set as the structure which grasps | ascertains the distance between the own vehicle 5 and the front vehicle 8 by image recognition processing, it does not restrict to this, For example, infrared light is used for the front vehicle 8 using infrared light. The inter-vehicle distance may be obtained based on the time from the projection to the reflection and incidence, or may be obtained by inter-vehicle communication or the like. When infrared light is used, the infrared light emitting unit and the infrared incident unit function as a distance information acquisition unit that acquires information for measuring the inter-vehicle distance between the host vehicle 5 and the preceding vehicle 8.

  In the above embodiment, the inter-vehicle distance from the forward vehicle 8 is measured and an alarm is output when the vehicle is approaching the vehicle. A vehicle or the like located in the direction is assumed.

  In the above embodiment, the speaker 19 is used as the alarm output unit and the alarm is output by voice. However, in addition to the alarm by voice, the alarm or light emitting unit (not shown) by the warning message using the liquid crystal display 32 is used. Alarm) due to light emission using the As a method for changing the alarm level, in addition to the output volume level, a message size displayed on the liquid crystal display 32, a light intensity emitted from the light emitting unit, and the like are assumed. When the liquid crystal display 32 is used, the liquid crystal display 32 functions as an alarm output unit.

5 Own vehicle 8 Vehicle ahead (peripheral vehicle)
DESCRIPTION OF SYMBOLS 10 Onboard equipment 11 Control part 13 Image processing part (Distance information acquisition part, Location information acquisition part)
14 Speed I / F (Speed information acquisition unit, location information acquisition unit)
16 GPS_I / F (location information acquisition unit)
19 Speaker (alarm output unit)
30 In-vehicle camera 32 Liquid crystal display (alarm output unit)
43 Threshold table 45 Alarm level table

Claims (3)

A distance information acquisition unit that acquires information for measuring a distance between the host vehicle and a surrounding vehicle;
A speed information acquisition unit for acquiring information for calculating the traveling speed of the host vehicle;
A location information acquisition unit for acquiring information for identifying the travel location of the host vehicle;
An alarm output unit that outputs alarms at various alarm levels;
A control unit connected to each of the distance information acquisition unit, the speed information acquisition unit, the location information acquisition unit, and the alarm output unit;
A vehicle-mounted device used by being mounted on the host vehicle,
The control unit is configured such that the traveling location of the host vehicle identified based on information from the location information acquisition unit is located in any one of a plurality of predetermined types of regions, and The travel speed of the host vehicle calculated based on the information from the speed information acquisition unit is smaller than a predetermined speed threshold that can be considered that the host vehicle is stopped or slowing down , and the distance information acquisition unit If the inter-vehicle distance measured based on information from the vehicle is smaller than a distance threshold corresponding to the type of the region where the identified travel location of the host vehicle is located , the identified travel location of the host vehicle is located. The alarm output unit outputs the alarm at an alarm level corresponding to the type of region ,
The distance threshold and the warning level are different for each type of region, and the warning level is set so as to decrease as the distance threshold increases corresponding to the type of region. Onboard equipment. As the type of the area, at least a parking lot and a signal area are defined, and the warning level output from the warning output unit when the travel location of the host vehicle is located in each of these areas is a parking lot, Set to be lower in order of signal area,
The on-vehicle device according to claim 1. As the type of the area, at least a parking lot and a traffic jam location are defined, and the warning level output from the warning output unit when the travel location of the host vehicle is located in each of these areas is a parking lot, Set to be lower in order of traffic jams,
The on-vehicle device according to any one of claims 1 and 2.

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