JP2013069247A - Control system and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control system and the like capable of more appropriately issuing an alarm at a place in need of the alarm than a conventional one and suppressing the alarm when the alarm is unnecessary.SOLUTION: As first processing, the control system stores a point where a speed is suddenly changed, in a GPS alarm function as a harsh braking occurrence point and addingly includes, as second processing, a harsh braking occurrence point alarm function for alarming, when a vehicle approaches to the point next time, "Attention! The harsh braking occurrence point is ○○ m ahead".

Description

  The present invention relates to a control system that controls an alarm based on a current position of a vehicle and a vehicle state.

  2. Description of the Related Art Conventionally, there is an in-vehicle device that stores in advance position information such as an accident-prone area and issues an alarm before reaching the stored position when approaching the stored position. Such in-vehicle devices issue warnings based on points registered in advance based on the number of past accidents. As described above, in a configuration in which a point having a large number of past accidents is stored and an alarm is given when approaching that point, it is not possible to warn a user's individual dangerous point.

  In this regard, in Patent Document 1, when the acceleration in the front-rear direction of the current vehicle is detected by the G sensor and this acceleration is larger than a predetermined threshold value, the point is stored in the RAM as a dangerous point. In addition, a configuration is disclosed in which when a vehicle approaches the point within a predetermined reference distance, the danger point is displayed on the display, and an alarm is generated to notify the driver.

JP 2001-82966 A

  However, if it is configured such that an alarm is generated when it is within a predetermined reference distance of the stored dangerous spot, for example, an alarm is also generated when approaching from the opposite direction. For example, there is a case where it is not particularly dangerous, for example, when approaching from the opposite direction, and there is a problem that an alarm cannot be appropriately performed.

  Therefore, the present invention has been made to solve such problems and the like, and is a control system that can issue an alarm more accurately at a place where an alarm is required than before and can suppress the alarm when an alarm is unnecessary. The purpose is to provide.

  (1) In order to achieve the above-described object, the control system according to the present invention acquires the current position of the vehicle and the first vehicle state, and when the first vehicle state becomes a predetermined state, A first process for storing position information based on the current position; a second vehicle state is acquired when the position indicated by the stored position information and the current position are in a predetermined approach relationship; Performing a second process of acquiring a third vehicle state at a predetermined timing after acquisition and performing a predetermined alarm based on the relationship between the second vehicle state and the third vehicle state It is characterized by.

  By the first process, the current position of the vehicle and the first vehicle state are acquired, and when the first vehicle state becomes a predetermined state, position information based on the current position is stored. Then, by the second process, for example, the second vehicle state is acquired when the position indicated by the position information stored in the first process and the current position are in a predetermined approach relationship, and the second vehicle state is acquired. The third vehicle state is acquired at a predetermined timing later than that, and a predetermined alarm is issued based on the relationship between the second vehicle state and the third vehicle state.

  Therefore, when the first vehicle state becomes a predetermined state by the first process, a predetermined alarm is issued when the position indicated by the position information based on the current position stored and the current position is in a predetermined approach relationship. Compared to the conventional configuration, the second vehicle state is acquired when the current position is in a predetermined approach relationship, and the third vehicle state is changed at a predetermined timing after the second vehicle state acquisition. Since a predetermined alarm is obtained based on the relationship between the second vehicle state and the third vehicle state, a control system that can issue an accurate alarm at a place where an alarm is required than before is provided. Can be provided. For example, when a predetermined approach relationship is reached, an alarm is not issued if the relationship between the second vehicle state and the subsequent third vehicle state does not satisfy a predetermined condition, and an alarm is issued if the relationship is satisfied By doing so, it is possible to provide a control system that can issue an alarm more accurately at a place where an alarm is required than before, and can suppress the alarm when the alarm is unnecessary.

  For example, the current position of the vehicle is acquired by GPS, and the first vehicle state is acceleration. For example, “when the first vehicle state is in a predetermined state” is “when the acceleration is equal to or higher than a predetermined value and then is stopped or decelerated to a predetermined speed”. Further, for example, “position information based on the current position” is “latitude / longitude information of the point S”. “When the position indicated by the stored position information and the current position are in a predetermined approach relationship” is “when the current position is in the area E (radius 700 m from the point S)”, and “the second vehicle “Acquisition of state” is “acquisition of current position when entering area E”. The “predetermined timing after the acquisition of the second vehicle state” is the “timing when entering the area F (radius 500 m from the point S)”, and the “third vehicle state” is “entering the area F” "Current position at time". “Based on the relationship between the second vehicle state and the third vehicle state” means that “the direction from the current position when entering area E to the current position when entering area F is different from the current position when entering area E”. “When the angle is within a predetermined angle (within 45 degrees) with respect to the direction toward the point S”.

  In this way, the current position and acceleration of the vehicle acquired by GPS are acquired, and the latitude and longitude information of the point S is obtained when the vehicle stops or decelerates to a predetermined speed after the acceleration exceeds a predetermined value. When the current position is in the area E (radius 700 m from the point S), the current position when the area E is entered is acquired and the area F (the radius 500 m from the point S) is entered. The current position at the time of entering area F is acquired, and the direction from the current position at the time of entering area E to the current position at the time of entering area F is the direction from the current position at the time of entering area E to the point S. When the angle is within a predetermined angle (within 45 degrees), a second process for performing a predetermined alarm is performed. By configuring in this way, it is possible to issue a warning more accurately in places where a warning is required than before, such as the possibility of a warning being reduced when driving in the opposite lane and approaching the stored position. It is possible to provide a control system that can suppress an alarm when the alarm is unnecessary.

  (2) As said 1st process, when said 1st vehicle state turns into a predetermined state, when memorize | storing the positional information based on said present position, the information regarding the advancing direction of a 1st vehicle is linked | related and memorize | stored. In addition, as the second process, information on the traveling direction of the second vehicle is obtained using at least one of the second vehicle state and the third vehicle state, and the traveling direction of the first vehicle Using the information on the traveling direction of the second vehicle and the information on the traveling direction of the second vehicle, the predetermined warning is performed when the traveling direction of the first vehicle and the traveling direction of the second vehicle are in a predetermined approximate relationship, It may be configured to suppress the predetermined alarm when there is no approximate relationship.

  In this way, when the position indicated by the stored position information and the current position are in a predetermined approach relationship, the traveling direction of the first vehicle and the traveling direction of the second vehicle have a predetermined approximate relationship. In some cases, the predetermined alarm is issued. Therefore, it is possible to provide a control system that can issue an alarm more accurately at a place where an alarm is required than before, and can suppress the alarm when the alarm is unnecessary.

  For example, in the above-described example, the “information on the traveling direction of the first vehicle” is set to “the traveling direction specified from the movement path from the point R (brake operation start position of the vehicle) to S”, As a configuration for obtaining information on the traveling direction of the second vehicle by using at least one of the vehicle state and the third vehicle state, “from the current position when entering area E and the current position when entering area F” It is preferable to adopt a configuration in which the “direction of travel” is obtained, “within 45 degrees” as the “predetermined approximate relationship”, and “no alarm” as “suppress a predetermined alarm”.

  (3) When the position information based on the current position is stored, control for notifying information indicating that may be performed. In this way, it can be seen that the driver has stored position information based on the current position. Since this storage is made when the first vehicle state becomes a predetermined state, it can also be understood that the first vehicle state has become the predetermined state.

  As the “control for informing information indicating that”, for example, a voice output of “Registered at a sudden braking occurrence point” is given.

  (4) When the first vehicle state becomes a predetermined state, it may be a case where a sudden braking state exceeding a predetermined level occurs.

In this way, it is possible to issue a warning more accurately at the point where sudden braking was applied in the past than before, and when the warning is unnecessary when approaching the point where sudden braking was applied in the past. Can be provided.
For example, the “first vehicle state” may be “acceleration (or braking distance)”, and the “predetermined level” may be “acceleration in the deceleration direction is 0.3 G or more”.

  (5) A function of performing a third process for performing a predetermined alarm when a predetermined approach relationship is established with a third position that is a position indicated by position information stored by a process different from the first process. The predetermined alarm in the second process may be suppressed when performing the predetermined alarm in the third process.

  In this way, for example, when the alarm by the third process is close to the alarm by the second process, the alarm by the second process can be suppressed. Therefore, it is possible to prevent the alarm by the second process and the alarm by the third process from being simultaneously made difficult to understand or troublesome. Therefore, it is possible to accurately issue an alarm at a place where an alarm is required, and to suppress an alarm when an alarm is unnecessary.

  For example, “a process different from the first process” is “a process for storing accident frequent occurrence points in advance”, “third position” is “accident frequent occurrence point”, and “predetermined access relationship” is “accident frequent occurrence”. "In the point area", "predetermined alarm by the third process" is "frequent accident alarm", "predetermined alarm in the second process" is "sudden brake history alarm", "suppress" is " “Do not alarm”.

  The “process different from the first process” may be a process executed in the present control system or a process executed in another system. That is, the position information of the third position may be stored in another system. The same applies to (6).

  (6) A function of performing a third process for performing a predetermined alarm when a predetermined approach relationship is established with a third position that is a position indicated by position information stored by a process different from the first process. The predetermined alarm in the third process may be suppressed when performing the predetermined alarm in the second process.

  In this way, for example, when the alarm by the third process and the alarm by the second process are close to each other, the alarm by the third process can be suppressed. Therefore, it is possible to prevent the alarm by the second process and the alarm by the third process from being simultaneously made difficult to understand or troublesome. Therefore, it is possible to accurately issue an alarm at a place where an alarm is required, and to suppress an alarm when an alarm is unnecessary. In addition, it is possible to give a warning specific to each individual.

  For example, “a process different from the first process” is “a process for storing accident frequent occurrence points in advance”, “third position” is “accident frequent occurrence point”, and “predetermined access relationship” is “accident frequent occurrence”. "In the point area", "predetermined alarm by the third process" is "frequent accident alarm", "predetermined alarm in the second process" is "sudden brake history alarm", "suppress" is " “Do not alarm”.

  (7) It is good to comprise as a program for making a computer implement | achieve the function as a control system in any one of (1)-(6).

  Therefore, according to the present invention, it is possible to provide a control system and the like that can issue an alarm more accurately at a place where an alarm is required than before and can suppress the alarm when the alarm is unnecessary.

It is a figure which shows the structure of the radar detector which is preferable one Embodiment of this invention. It is a block diagram of a radar detector. It is a figure which shows the example of a display of a standby screen, a radar scope, and a GPS alarm. It is a figure which shows the example of a display of the alarm screen in a radar wave alarm function. It is a figure explaining a sudden brake generation point alarm function.

  1 and 2 show the configuration of a radar detector which is a preferred embodiment as a control system of the present invention. The radar detector is usually mounted on the dashboard. This radar detector is usually fixed by sticking the bottom surface of the plate 33b of the pedestal 33 on the dashboard. A ball joint receiving portion 33a is provided on the upper portion of the pedestal 33, and the ball portion provided at the lower end portion of the column portion 31 extending downward from the bottom surface of the case body 1 is inserted into the ball joint receiving portion 33a, and the ball portion is inserted. It can be held at an arbitrary angle and posture within the movable range. The pedestal 33 is provided with a spherical concave portion at a predetermined position on the upper surface thereof, and the pedestal 33 is made of a material that can be elastically deformed such as rubber and has an appropriate friction coefficient. The outer diameter of the ball portion and the inner diameter of the recess are set to be approximately equal. As a result, in a state where the ball portion has entered the recess, the outer shape of the ball portion and the inner shape of the recess substantially coincide, and the ball portion can rotate and move in any direction along the spherical surface. And while making both diameters substantially correspond and giving an appropriate friction coefficient to the inner shape of the recess, the ball part can be held at an arbitrary angle and posture. Further, since the pedestal 33 can be elastically deformed, when the case body 1 is urged upward while holding the pedestal 33 from the state shown in FIG. 1, the diameter of the opening of the recessed portion increases and the ball portion is recessed. Can be disengaged from. On the other hand, when the pedestal 33 and the ball part are separated, if the ball part is pressed against the opening of the recess and urged to be pushed toward the pedestal 33 in that state, the opening is caused by the elastic deformation of the recess. The part once expands and the ball part is accommodated in the recess. Thereafter, the shape of the recess is restored to the original by the elastic restoring force of the pedestal 33, and the ball portion is prevented from being easily detached from the recess. Further, one surface of an adhesive member such as an adhesive sheet, a double-sided adhesive tape, or a hook-and-loop fastener is attached to the bottom surface of the pedestal 33, and the other surface of the adhesive member is attached to a predetermined position in the vehicle interior such as a dashboard. Thereby, the pedestal 33 is fixed at a predetermined position visible from the driver in the vehicle interior.

  As shown in FIG. 1, the radar detector has a solar panel 2 and a switch unit 3 arranged on the upper surface of the case body 1, and the front surface side of the case body 1 (the side disposed on the front side of the vehicle (the windshield side)). The microwave receiver 4 for detecting the microwave in the frequency band emitted by the speed measuring device is disposed inside the. On the other hand, a display unit 5, an alarm lamp 6, an infrared communication device 7, and a remote control receiver 16 are arranged on the rear side of the case body 1 (the side arranged on the rear side of the vehicle (user side (driver side)). A GPS receiver 8 is disposed inside the upper surface 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 an illustration are omitted on the other side surface. A battery is provided inside the bottom surface of the case body, and the battery is charged with power supplied from the solar panel 2 and the DC jack, and the power is supplied to each part. The speaker 20 is also built in. In the present embodiment, the display unit 5 is a 2.4-inch small color dot matrix liquid crystal display having a backlight, The rear surface side of the case body 1 (the side disposed on the rear side of the vehicle (user side (driver side)) is used as a display surface. The height H of the rear side of the case body 1 on which the display unit 5 is mounted is the other part. The height is larger than H0.

  As shown in FIG. 2, the infrared communication device 7 transmits and receives data to and from a communication device incorporating an infrared communication device 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, the data stored in the memory card 14 attached to the memory card reader 13 can be taken in, or the contents of the memory of the database 19 and the control unit 18 can be transferred to the memory card. 14 can be written. More specifically, when the data stored in the memory card 14 includes update information such as new target information (position information including longitude and latitude, type information, etc.), the update information is sent to the control unit 18. Is stored (downloaded) in the database 19 built in the radar detector, and the data in the database 19 is updated. The function of the memory card reader 13 may be configured to be built in the main body case 1.

  The database 19 is a nonvolatile memory (for example, EEPROM) in the microcomputer of the control unit 18 or externally attached to the microcomputer. Information about a certain target is registered in the database 19 at the time of shipment, and data and the like about the target added after that can be updated as described above. Data update can also be performed via the infrared communication device 7.

  The DC jack 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.

  The wireless receiver 15 receives incoming radio waves having a predetermined frequency. The remote controller receiver 16 performs data communication with a remote controller (portable device: slave device) 17 by infrared rays and performs various settings for the apparatus. 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. The remote controller 17 includes a standby switch button, a setting button, a selection button, a cancel button, a determination button, a reset button, and up / down / left / right cross buttons.

  Furthermore, the radar detector of the present embodiment is an OBD-II (II is a Roman numeral “2”, hereinafter “OBD-II” is referred to as “OBD2”) as shown in FIG. A connection cable 22 connected to the connector is provided, and a connector terminal 23 that can be detachably attached to the OBD2 connector of the vehicle is attached to the tip of the connection cable 22. The OBD2 connector is also referred to as a failure diagnosis connector, and is connected to the ECU of the vehicle to output various vehicle information. Furthermore, in this embodiment, the connector terminal 25 for connecting with the socket port 24 provided in the side surface of the case main body 1 of the radar detector is provided at the other end of the connection cable 22. The connection cable 22 can be attached and detached. Of course, the connection cable 22 may be directly connected to the radar detector.

Therefore, by connecting the connector terminal 23 attached to the connection cable 22 and the OBD2 connector on the vehicle main body side, the control unit 18 acquires various types of vehicle information every second. This vehicle information includes vehicle speed, engine speed, engine load factor, throttle opening, fuel flow rate, instantaneous fuel consumption, intake air amount (MAF), injection opening time, remaining fuel amount, accelerator opening, turn signal information (left and right) There are blinker operation (ON / OFF)), brake opening degree, steering wheel rotation steering angle information, and the like.
The acceleration sensor 27 is a sensor that is provided in the case body 1 and detects accelerations in the front, rear, left, and right directions of the vehicle.

  The control unit 18 is a microcomputer including a CPU, a ROM, a RAM, an I / O, and the like, executes predetermined processing based on information input from the above various input devices, and uses the above various output devices. To output predetermined alarms, messages and information. Note that these basic configurations can be basically the same as the conventional ones.

  The functions of the radar detector of the present embodiment are realized by being stored on the EEPROM of the control unit 18 as a program executed by the computer included in the control unit 18 and executed by the computer included in the control unit 18.

  Functions realized by the computer by the program of the control unit 18 include a GPS log function, a standby screen display function, a radar scope display function, a vehicle information display function, a GPS alarm function, a radar wave alarm function, and a radio alarm function.

The GPS log function is a function in which the control unit 18 stores the current position detected by the GPS receiver 8 every second in the database 19 as a position history in association with the detected time and speed (vehicle speed). This position history is recorded in the NMEA format, for example.
The standby screen display function is a function for displaying the speed, latitude, longitude, and altitude of the host vehicle detected by the GPS receiver 8 on the display unit 5 as shown in FIG.

  As shown in FIG. 3 (b), the radar scope display function is a position where a target within a predetermined range (for example, within a range of about 1 km) from the current position detected by the GPS receiver 8 is stored in the database 19. This is a function of searching based on information and displaying the relative positional relationship between the vehicle position and the position of the target on the display unit 5. In FIG. 3B, “W” on the left side indicates the west, “E” on the right side indicates the east, and “N” on the upper side indicates the north direction, and the horizontal line connecting “W” and “E” and “N” The icon at the intersection of the vertical line extending downward from "" indicates the vehicle position. Icons having characters such as “L”, “RD”, “P”, and “N” indicate the type and position of the target.

  As shown in FIG. 3C, the vehicle information display function includes the throttle opening, fuel flow rate, fuel flow rate, in addition to the current value of the engine load factor in the vehicle information acquired from the vehicle via the OBD2 connector as described above. Displays the current value of the instantaneous fuel consumption and the average fuel consumption, which is the average value of the instantaneous fuel consumption obtained every second from when the radar detector was installed to the vehicle, and depending on the engine load factor The display mode of the 3D object indicating the shape of the engine is changed and displayed.

  When pressing of a standby switching button provided on the remote controller 17 is detected during execution of the standby screen display function as shown in FIG. 3A, the radar scope display function is switched to as shown in FIG. Further, when the pressing of the standby switch button provided on the remote controller 17 is detected during the execution of the radar scope display function, a process for switching to the vehicle information display function shown in FIG. 3C is performed. Further, when pressing of the standby switch button provided on the remote controller 17 is detected during execution of the vehicle information display function, processing for switching to the standby screen display function is performed.

  The control unit 18 performs a GPS alarm function according to an event that occurs during execution of a standby screen display function, a radar scope display function, a vehicle information display function (hereinafter, these functions are collectively referred to as a standby function). Then, a process for realizing each function such as a radar wave alarm function and a radio alarm function is executed, and when the process of the function is completed, the process returns to the process of the original standby function. The priority of each function is set in the order of radar wave warning function, radio alarm function, and GPS alarm function from the highest.

  The GPS alarm function is a process executed at a predetermined time interval (1 second interval) by an event from a timer included in the control unit 18 and detected by the latitude and longitude of the target stored in the database 19 and the GPS receiver 8. The distance between the two is obtained from the latitude and longitude of the current position, and when the obtained distance becomes a predetermined approach distance (for example, within 500 m), a GPS alarm display as shown in FIG. This is a process of outputting an approach warning sound indicating that from the speaker 20.

  Such targets include snoozing driving accident points, radar, speed limit switching points, control areas, inspection areas, parking monitoring areas, N systems, traffic monitoring systems, intersection monitoring points, signal ignorance suppression systems, police stations, frequent accidents Area, frequent on-board areas, sudden / continuous curve (highway), branch / merge point (highway), ETC lane advance guidance (highway), service area (highway), parking area (highway), highway Oasis (highway), smart interchange (highway), PA / SA petrol station (highway), tunnel (highway), highway radio reception area (highway), prefectural border notice, roadside station, viewpoint parking, etc. The type information of these targets, the latitude / longitude information indicating the position thereof, and the display on the display unit 5 The formula diagram or photo data and audio data are stored in the database 19 in association with each other.

  The radar wave warning function is used when the microwave receiver 4 detects a signal corresponding to a microwave in a frequency band emitted from a velocity measuring device (mobile radar or the like (hereinafter simply referred to as “radar”)). This is an alarm function for displaying an alarm screen on the display unit 5 and outputting an alarm sound from the speaker 20. For example, when a microwave in the microwave frequency band emitted by the radar is detected by the microwave receiver 4, a schematic diagram or a photograph of the radar stored in the database 19 is displayed as shown in FIG. The voice data stored in the database 19 is read out as a warning screen on the unit 5 and the voice “Radar. Speed attention” is output from the speaker 20. During sound output, the alarm lamp 6 is turned on.

  The wireless alarm function is a function for issuing an alarm so that the wireless receiver 15 does not interfere with traveling or the like when a radio wave emitted by an emergency vehicle or the like is received. In the radio alarm function, enforcement radio, car radio, digital radio, special radio, police radio, police phone, police radio, wrecker radio, heli tele radio, fire helicopter radio, fire fight radio, emergency radio, expressway radio , Scan the frequency of the security radio, etc., and when the radio is received at the scanned frequency, a schematic diagram showing that the radio corresponding to the frequency stored in the database 19 for each radio type is received as an alarm screen While displaying on the display part 5, the audio | voice data memorize | stored for every radio | wireless classification in the database 19 are read, and the alarm sound which shows the radio | wireless classification from the speaker 20 is output. For example, when a control radio is received, a voice is output like “control radio. Speed attention”. During sound output, the alarm lamp 6 is turned on.

  The radar detector according to the present embodiment stores a point where the GPS alarm function has a sudden speed change as a sudden braking occurrence point as the first processing, and when it approaches this point next time as the second processing, ○ Make a sudden brake occurrence point. Be careful. ”An emergency brake occurrence point warning function is added. Specifically, it is as follows.

  The sudden braking occurrence point is determined by the distance from the position where the acceleration sensor 27 detects the acceleration in the longitudinal deceleration direction of 0.2 G or more to the position where the vehicle speed detected by the GPS receiver 8 becomes zero. When the distance is within a distance obtained by multiplying the distance by a predetermined rate (hereinafter referred to as a safety factor), the speed of the vehicle becomes zero. When the distance from the position where the acceleration in the longitudinal deceleration direction of 0.2 G or more is detected to the position where the speed becomes zero exceeds the distance obtained by multiplying the braking distance by a predetermined rate (hereinafter referred to as safety factor) The point is not memorized without judging it as a sudden braking point.

The braking distance is a distance obtained when the full brake is applied from a constant speed. Specifically, it is defined as follows.
Braking distance Up to 40 km / h, speed squared / 100 → 40 km / h, 16 m
2. When the speed exceeds 40 km / h, the above 1. 20% subtraction → 20m for 50km / h
3. When the speed is below 40 km / h, the above 1. Add 2m to → 11m for 30km / h

  Such a sudden braking point is stored in the database 19, and an alarm is issued when the point approaches the point from the same direction. As a result, it is possible to know in advance that there is a dangerous area ahead.

  In storing the sudden braking point, the traveling direction is specified from the history of the sudden deceleration start position and the stopping position, and the sudden braking occurrence point alarm is not set in the opposite lane. Also, sudden braking occurrence point warnings are not performed in places where the frequent accident occurrence areas stored in the database 19 and sudden braking occurrence points overlap.

  For example, while traveling at 60 km / h in the direction of travel (west → east), suddenly braked and stopped 30 meters away. When calculated by applying the above formula for calculating the braking distance, the braking distance is 28.8 m, but if it is within a distance obtained by adding a certain safety factor, it is stored as a sudden braking occurrence point. At this time, the traveling direction is specified from the transition of the braking start point and the stop point, and stored simultaneously. When the safety factor is set to 15%, 28.8 × (1 + 0.15) = 33.12 m. Since the actual braking distance is within this value, it is determined that the sudden braking occurrence point. The safety factor may be set arbitrarily or may be set through experiments or the like.

  When approaching the same point for the second time, for example, the traveling direction is specified from the transition of the position from 300m before to 200m before. If the direction of travel is the same as the previous time, an alarm is issued.

  A more detailed process will be described with reference to FIG. 5 using another example. When vehicle A finds a stopped vehicle B at point R and suddenly brakes and stops or decelerates at point S, it determines whether it is a sudden braking point as described above, and sudden braking occurs. If it is determined to be a point, the point S is registered as a point, the travel route from the point S to the point S having a radius of 300 m is copied from the position history recorded by the GPS log function, and the point S is converted into a point (latitude and longitude). ) In the database 19 as a sudden braking occurrence point. At this time, a voice “Registered as a sudden brake occurrence point” is output from the speaker 20.

  The approach to the point S is recognized in the area E at a radius of 300 m from the point S where the current position of the vehicle A is registered in the database 19 as a sudden braking occurrence point, and from the position of the area E to the radius from the point S When there is a predetermined correlation or more between the position history recorded by the current GPS log function up to the area F at a position of 200 m and the position history stored in the database 19 in association with the point S (for example, this time In the area F, when 90% or more of the position history stored in the database 19 in association with the point S exists in a curve having a width of 20 m formed by connecting the position histories recorded by the GPS log function) Alarm when entering. For example, a voice “200m ahead, sudden braking point. Please be careful.” Is output from the speaker 20. In this way, the alarm is notified only when the vehicle A3 moves to the point S.

  In this way, when the acceleration becomes equal to or greater than the predetermined value and the vehicle is stopped, the first process of storing the latitude / longitude information of the point S under the above-described conditions (spot registration) is performed, and the current position is the area. If the position is F (radius 200 m from point S), a route based on the position history including the current position when entering area F and the current position when entering area E (radius 300 m from point S) is acquired. If the route from the current position when entering area E to the current position when entering area F correlates more than a predetermined distance, the speaker 20 will sound “200m ahead, sudden braking point. A second process is performed to output an alarm. In this way, when traveling in the opposite lane and approaching the memorized position, the possibility of being alarmed is reduced, and it is possible to accurately issue an alarm at a place where an alarm is required than before, It is possible to provide a radar detector that can suppress an alarm when the alarm is unnecessary.

In the present embodiment, when the acceleration becomes a predetermined value or more and then stops, the first process of storing the latitude / longitude information of the point S under the above-described conditions is performed. At this time, a travel route within a radius of 300 m from the point S to the point S is copied from the position history recorded by the GPS log function and stored in association with it at the same time. When the position becomes a radius of 200 m from S, a route based on the position history including the current position when entering area F and the current position when entering area E (radius of 300 m from point S) is acquired, and the current area E If there is more than a predetermined correlation with the route from the current position at the time of entry to the current position at the time of entering Area F, “Please note that it is a point where a sudden braking occurs 200 meters away.” Speech referred performing second processing for warning to be output from the speaker 20. As described above, the alarm is issued when the traveling directions of the two are in a predetermined approximate relationship, and the alarm is not performed when the traveling direction is not in the predetermined approximate relationship.
Therefore, it is possible to provide a control system that can issue an alarm more accurately at a place where an alarm is required than before and can suppress the alarm when an alarm is unnecessary.

  In the present embodiment, when the point S is stored, a voice output “Registered as a sudden braking point” is performed. Therefore, the driver knows that the point S is stored. Further, it is recognized again by this voice that the brake is suddenly applied until the point S is reached.

  In the present embodiment, the accident frequent occurrence area stored in the database 19 and the place where the sudden braking occurrence point overlaps are not subjected to the sudden braking occurrence point alarm, but conversely, the accident frequent occurrence area stored in the database 19 is used. In a place where sudden braking occurrence points overlap, alarms in areas where accidents frequently occur may not be performed. In any configuration, it is possible to prevent the warnings from being duplicated and becoming difficult to understand or troublesome. Therefore, it is possible to accurately issue an alarm at a place where an alarm is required, and to suppress an alarm when an alarm is unnecessary.

It should be noted that the point that has undergone a rapid speed change as in the present embodiment may be a point at which the speed has suddenly changed with respect to the moving distance. In addition to a sudden change in speed, when an acceleration sensor detects an acceleration exceeding a certain level, this point may be stored as a sudden braking occurrence point (for example, point S in FIG. 5).
The safety factor may be set arbitrarily or may be determined by experiment.

In the present embodiment, the stopped position is set as the point S, but the position decelerated to a predetermined speed may be set as the point S.
The above-described constituent elements may be appropriately combined to constitute a radar detector. For example, you may comprise by the example described in the term of the "means for solving a problem."

  In the present embodiment, the power supply can be received by connecting to the cigar socket of the vehicle via the cigar plug cord, but the power supply may be received from the OBD2 connector.

  In the present embodiment, the sudden braking occurrence point is from the position where the acceleration sensor 27 detects acceleration in the longitudinal direction of 0.2 G or more to the position where the vehicle speed detected by the GPS receiver 8 becomes zero. Is within the distance obtained by multiplying the braking distance by a predetermined safety factor, the point at which the vehicle speed becomes zero is not limited to this. For example, instead of “the position where the acceleration sensor 27 detects the acceleration in the front-rear deceleration direction of 0.2 G or more”, the vehicle brake state is acquired from the OBD2 connector or the like, and the braking state (brake It is good also as "the position where the state applied" is detected. Further, instead of “the position where the vehicle speed has become zero”, it may be a position where the braking state has ceased.

  In this embodiment, the example of the radar detector has been described. However, the present invention can be implemented as a function of various in-vehicle electronic devices. For example, you may incorporate as a function of a navigation apparatus, a drive recorder, and a car audio. In addition, the numerical values described in the present embodiment may be appropriately changed to values that exhibit an effect through experiments and the like. The screen size of the display unit 5 can also be set arbitrarily. Further, the control unit 18 is provided with a function of setting the priority order of each function and alarm based on an instruction from the user from the remote controller 17 or the like, and the control unit 18 performs processing in this set priority order. It may be configured.

  Further, in the above-described embodiment, the apparatus includes the database 19 that stores various types of information, and the control unit 18 accesses the database 19 to read out necessary information and performs various types of processing. It is not limited to. That is, part or all of the information registered in the database 19 is registered in the server. The radar detector and other electronic devices / devices may have a function of communicating with the server, and the control unit 18 may access the server as appropriate, acquire necessary information, and execute a process. Furthermore, at least a part of the function of the control unit 18 may be placed on a server, the function may be executed on the server, and an electronic device owned by the user may acquire the execution result.

DESCRIPTION OF SYMBOLS 1 Case main body 2 Solar panel 4 Microwave receiver 5 Display part 6 Lamp 7 Infrared communication device 8 GPS receiver 9 Adapter jack 10 Power switch 11 Mobile phone 12 Memory card reader 14 Memory card 15 Wireless receiver 16 Remote control receiver 17 Remote control 18 Control Unit 19 Database 20 Speaker 21 DC Jack 22 Connection Cable 27 Acceleration Sensor

Claims (7)

A first process of acquiring the current position of the vehicle and the first vehicle state, and storing the position information based on the current position when the first vehicle state becomes a predetermined state; and the stored position information The second vehicle state is acquired when the position indicated by and the current position are in a predetermined approach relationship, and the third vehicle state is acquired at a predetermined timing after the second vehicle state acquisition, A control system that performs a second process of performing a predetermined alarm based on a relationship between the second vehicle state and the third vehicle state. As said 1st process, when said 1st vehicle state turns into a predetermined state, when memorizing the position information based on said current position, it associates and memorizes information about the traveling direction of the first vehicle,
As said 2nd process, the information regarding the advancing direction of a 2nd vehicle is calculated | required using at least any one of said 2nd vehicle state and said 3rd vehicle state, and the information regarding the advancing direction of said 1st vehicle; Using the information related to the traveling direction of the second vehicle, when the traveling direction of the first vehicle and the traveling direction of the second vehicle are in a predetermined approximate relationship, the predetermined warning is performed and the predetermined approximate relationship is established. The control system according to claim 1, wherein the predetermined alarm is suppressed when there is not. 3. The control system according to claim 1, wherein when the position information based on the current position is stored, control for notifying information indicating the fact is performed. The control system according to any one of claims 1 to 3, wherein when the first vehicle state is in a predetermined state, the vehicle is in a state of sudden braking at a predetermined level or higher. A function of performing a third process for performing a predetermined alarm when a predetermined approach relationship is established with a third position that is a position indicated by position information stored by a process different from the first process;
The control system according to any one of claims 1 to 4, wherein the predetermined alarm in the second process is suppressed when the predetermined alarm is performed in the third process. A function of performing a third process for performing a predetermined alarm when a predetermined approach relationship is established with a third position that is a position indicated by position information stored by a process different from the first process;
The control system according to any one of claims 1 to 4, wherein the predetermined alarm in the third process is suppressed when the predetermined alarm is performed in the second process.   The program for making a computer implement | achieve the function as a control system of Claims 1-6.