JP2014235078A - Vehicle guidance device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem in which a driver has to drive along a preliminarily determined route regardless of a degree of fatigue of the driver, resulting in inconvenience.SOLUTION: In a step S16, when pulse data received from a pulse meter 10 shows that a pulse is very fast, a degree of fatigue of a driver is judged to be high. In a step S18, a route is re-retrieved from map information stored in a memory 36 on the basis of a current location based upon information from a GPS receiver 37, and a preliminarily inputted destination. In a next step S19, as to a plurality of re-retrieved and outputted routes, a degree of drive difficulty of each route is calculated, the degree of calculated drive difficulty is compared with a current route, and a route having the easiest degree of drive difficulty is set as a recommendation route.

Description

  The present invention relates to a vehicle guidance device for guiding a vehicle.

  The vehicle is equipped with a navigation device, obtains location data of the current location using a GPS (Global Positioning System) positioning system, searches the route to the destination based on the current location data, and guides the vehicle Yes.

  In such a navigation device, the weather information is received, the traveling safety degree of the route to the destination is determined, and when there is an unsafe location, a bypass route that bypasses the location is searched (for example, Patent Document 1).

JP 2007-47034 A

  Conventionally, it has been inconvenient to drive along a preset route regardless of the fatigue of the driver driving the vehicle.

  According to the vehicle guidance device of the present invention, biological information acquisition means for acquiring biological information of the driver of the vehicle, determination means for determining the degree of fatigue of the driver based on the biological information acquired by the biological information acquisition means, If the judgment means determines that the degree of fatigue is high, the route search means for re-searching the route from the current location to the destination, and the route that is easy to drive among the routes re-searched by the route search means And route setting means for setting as a recommended route.

  According to the present invention, an optimum route can be set according to the driver's fatigue level.

It is a figure which shows the whole system block diagram in one Embodiment of this invention. It is a block diagram which shows the function structure of a pulse meter. It is a block diagram which shows the function structure of a navigation apparatus. It is a flowchart which shows the processing operation of a pulse meter. It is a flowchart which shows the processing operation of a navigation apparatus.

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing an overall system configuration diagram according to an embodiment of the present invention. In this overall system configuration diagram, the pulse meter 10 is a wristwatch type wound around the driver's arm, and detects the driver's pulse data as biological information. The detected pulse data is transmitted to the navigation device 30 mounted on the vehicle 20 by wireless communication.

  The navigation device 30 determines the driver's fatigue level during driving in accordance with the transmitted pulse data, and sets an optimum route according to the fatigue level. Moreover, the navigation apparatus 30 is connected to the vehicle controller 40. For example, when the pulse meter 10 is wound around the driver's arm and detects a pulse, the engine of the vehicle 20 is started.

  FIG. 2 is a block diagram showing a functional configuration of the pulse meter 10. As shown in FIG. 2, the wristwatch type pulsometer 10 includes a CPU 11, a sensor 12, a memory 13, and a first communication unit 14, and a power source for operating them is detachably incorporated.

  The sensor 12 is, for example, an infrared sensor, and acquires pulse data by detecting the state in which red blood cells in the capillary blood vessels become dense or sparse with the pulse rate, using infrared reflectance. The first communication unit 14 transmits pulse data and the like to the navigation device 30 by wireless communication, and receives a driving start signal and the like from the navigation device 30. The memory 13 stores a program for performing processing operations shown in a flowchart described later, and temporarily stores measured pulse data.

  FIG. 3 is a block diagram showing a functional configuration of the navigation device 30. As shown in FIG. 3, the navigation device 30 includes a CPU 31, a second communication unit 32, an audio output unit 33, an operation unit 34, a display unit 35 such as a liquid crystal display, a memory 36 composed of ROM and RAM, a GPS receiver 37, and the like. Built in.

  The navigation device 30 retrieves the route from the map information stored in the memory 36 based on the current location based on the information from the GPS receiver 37 and the destination input from the operation unit 34 and displays the route on the display unit 35. The second communication unit 32 receives pulse data and the like from the pulse meter 10 by wireless communication, and transmits an operation start signal and the like to the pulse meter 10. In addition to the map information, the memory 36 stores a program for performing processing operations shown in a flowchart described later. The CPU 31 executes the program and outputs a start signal for starting the engine to the vehicle controller 40.

  Hereinafter, operations in the present embodiment will be described with reference to flowcharts. FIG. 4 is a flowchart showing the processing operation of the pulse meter 10. When the driver of the vehicle 20 operates the power switch (not shown) of the pulse meter 10 to turn on the power, the program shown in the flowchart of FIG.

  CPU11 acquires pulse data periodically from sensor 12 at Step S1. The acquired pulse data is recorded in the memory 13. When the driver of the vehicle 20 wears the pulsometer 10 on the wrist, the pulse data is acquired in step S1, the pulse data is detected acquired in step S2, and the process of step S3 is performed. Before the driver wears the pulse meter 10 on the wrist, acquisition of pulse data is not detected in step S2, and the flow returns to step S1 to acquire pulse data.

  When the driver prepares to start driving by wearing the pulsometer 10 on the wrist, it is detected that the pulse data has been acquired in step S2, and in the next step S3, the start signal is sent from the first communication unit 14. It is sent to the second communication unit 32 of the navigation device 30. As will be described later, the navigation device 30 starts the engine of the vehicle 20 when receiving the start signal. Thereafter, in step S4, the process waits until the driving start signal transmitted from the navigation device 30 is received. When the driving start signal is received, the process proceeds to the next step S5, and acquisition of pulse data is started.

  In step S5, pulse data is periodically acquired from the sensor 12. The acquired pulse data is recorded in the memory 13. In step S6, it is determined whether the pulse of the acquired pulse data is one of three levels of “normal value”, “early”, and “very early” compared with the normal pulse data of the driver. To do. It is assumed that the normal pulse data of the driver is measured in advance and recorded in the memory 13 as a normal value.

  In step S6, the normal value measured in advance and recorded in the memory 13 is compared with the pulse data acquired in step S5. If the acquired pulse data is very early, information indicating “very early” is transmitted to the navigation device 30 in step S7. If the acquired pulse data is early, information indicating “early” is transmitted to the navigation device 30 in step S8. If the acquired pulse data is a normal value, nothing is transmitted to the navigation device 30.

  Thereafter, in step S9, it is determined whether or not a driving end signal transmitted from the navigation device 30 has been received. If not received, the process returns to step S5, and if received, the process ends.

  FIG. 5 is a flowchart showing the processing operation of the navigation device 30. Even in a state where the ignition switch of the vehicle 20 is turned off, the CPU 31 of the navigation device 30 performs a process of determining whether a start signal is received from the pulse meter 10 in step S10. The minimum power necessary for this processing is supplied to the CPU 31 and the like.

  When the driver of the vehicle 20 wears the pulse meter 10 on the wrist, the pulse data is acquired in step S1 of FIG. 3 described above, and it is detected that the pulse data has been acquired in step S2, and a start signal is transmitted in step S3. Is done. In step S10, when the start signal is received and the start signal is a unique start signal registered in advance in the vehicle 20, the CPU 31 sends an engine start signal to the vehicle controller 40 in the next step S11. Output, and thereby the engine of the vehicle 20 is started. Starting the engine does not necessarily require the driver to be seated in the driver's seat, but by receiving an engine start signal even from a place away from the parking lot (for example, at home) It may be done. From a remote location, the vehicle controller 40 can be controlled from the pulse meter 10 via a mobile device such as a smartphone, and an engine start signal can be output.

  In the next step S12, the navigation device 30 is activated, and in step S13, the destination is input by the driver's operation, the navigation device 30 searches for the recommended route, and the driver travels from the recommended route. Set the route. Thereafter, in step S14, when the driver operates the button for starting driving and inputs driving start through the operation unit 34, a driving start signal is transmitted to the pulse meter 10 in the next step S15. In addition, you may make it acquire from the vehicle controller 40 that the vehicle 20 started driving | running | working, and may transmit this to the pulsometer 10 as a driving | operation start signal.

  When driving is started, pulse data is periodically acquired from the sensor 12 in step S5 of FIG. 3 described above, and the pulse of the acquired pulse data is compared with the normal pulse data of the driver in step S6. It is determined which of the three levels of “normal value”, “early”, and “very early” is made, and the result is transmitted in step S7 or step S8. In step S16, the driver's fatigue level is determined according to whether the data received from the pulse meter 10 is "early" or "very early", and functions as a determination means for determining the driver's fatigue level.

  If the data received from the pulsometer 10 is “very early” in step S16, it is determined that the driver's fatigue level is high, and in the next step S17, the driving difficulty level of the current route currently being traveled is obtained. And remember. The driving difficulty of this route is obtained by integrating the number of accident-prone points, the number of curves, and the number of intersections. The lower the integrated value, the easier the driving difficulty.

  In step S18, the route is searched again from the map information stored in the memory 36 based on the current traveling location based on the information from the GPS receiver 37 and the destination inputted in advance. In the next step S19, the driving difficulty level of each route is obtained for a plurality of routes searched and output again, and the driving difficulty level is the easiest compared with the driving difficulty level of the current route obtained in step S17. Set the route as the recommended route. As a result, the driver can travel on an easy driving route according to the degree of fatigue.

  Then, in step S20, a resting place closest to the current location is searched from the route with the easiest driving difficulty, a voice message is output from the voice output unit 33, and a resting point is displayed on the display unit 35. To guide the rest area. The driver can quickly reach the resting place according to this notification.

  Furthermore, in step S21, a voice message is output from the voice output unit 33 so as to lower the vehicle speed to a lower speed. The driver can reduce speed and avoid danger according to this notification. Note that a command to reduce the speed may be transmitted to the vehicle controller 40 and the speed of the vehicle 20 may be automatically decreased under the control of the vehicle controller 40. When the speed is automatically reduced, the speed is safely reduced by detecting the presence or absence of the rear vehicle and the speed of the rear vehicle.

  If the data received from the pulse meter 10 is “early” in step S16, the driver's fatigue level is relatively high. In the next step S22, the driving difficulty of the current route that is currently being traveled is obtained. And remember.

  In step S23, the route is searched again from the map information stored in the memory 36 based on the current location based on the information from the GPS receiver 37 and the destination input in advance. In the next step S24, the driving difficulty level of each route is obtained for a plurality of routes that are re-searched and output, and the driving difficulty level is one level compared with the driving difficulty level of the current route obtained in step S22. Set an easy route as a recommended route. The driver can travel a route according to the degree of fatigue.

  In step S25, a resting place that is relatively close to the current location is searched from the route that is easy to set the driving difficulty level, a voice message is output from the voice output unit 33, and a resting point is displayed on the display unit 35. To do. The driver can take a rest as appropriate according to this notification.

  Further, in step S26, a voice message is output from the voice output unit 33 so as to reduce the vehicle speed to a low speed. The driver can reduce speed and avoid danger according to this notification. The notified speed is higher than the case where the driver's fatigue is high and the pulse is “very fast”. Note that a command to reduce the speed may be transmitted to the vehicle controller 40 and the speed of the vehicle 20 may be automatically decreased under the control of the vehicle controller 40.

  In step S16, if there is no problem in the driver's fatigue level and nothing is transmitted from the pulsometer 10, it is "normal value", so the process proceeds to step S27. In step S <b> 27, when the driver inputs a driving end by operating the driving end button from the operation unit 34, a driving end signal is transmitted to the pulse meter 10 in the next step S <b> 28. When the pulse meter 10 receives the operation start signal, the pulse meter 10 ends the acquisition of the pulse data. In addition, you may make it acquire from the vehicle controller 40 that the vehicle 20 complete | finished driving | running | working, and may transmit this to the pulse meter 10 as a driving | operation completion signal. If the end of driving is not input in step S27, the process returns to step S16 to determine the driver's fatigue level.

  According to the embodiment of the present invention, pulse data is detected as biometric information from a driver wearing a wristwatch-type pulsometer 10, and the driver's fatigue level is determined from the pulse data during driving, thereby providing a safer route. Can be set.

(Modification)
The present invention can be implemented by modifying the embodiment described above as follows.
(1) The pulse data is judged in three stages of “normal value”, “early”, and “very early”, but may be one stage, two stages, or four stages or more.

(2) The navigation device 30 receives data indicating that the pulse data is “normal value”, “early”, and “very early” from the pulse meter 10, and determines the driver's fatigue level. The navigation device 30 may receive the pulse value from the pulse meter 10 and determine the driver's fatigue level according to the pulse value.

(3) Although an example of a pulse meter using pulse data as biological information has been described, blood pressure data may be detected by a sphygmomanometer, or a driver's fatigue level may be determined by detecting a body temperature by a thermometer. . Furthermore, the driver's fatigue level may be determined by combining a plurality of these pieces of biological information.

(4) The driving difficulty of the route is obtained by integrating the elements of the number of accident-prone points, the number of curves, and the number of intersections, but it may be obtained by adding the integrated distance of the traffic congestion point to this. Further, the driving difficulty may be obtained by weighting each element.

(5) The engine of the vehicle 20 is started when the pulse meter 10 is wound around the driver's arm and detects the pulse, but the engine is detected when the pulse is detected and the engine start button is pressed. May be started. Also, when the pulse meter 10 is wrapped around the driver's arm and the acceleration is detected when the arm is swung up or down, or when the acceleration is detected when the arm is rotated, the engine is turned on. You may make it start. Further, the pulsometer 10 is provided with a function as a wristwatch, and the engine is started when the pulsometer 10 is mounted in the case of going out by car with reference to the schedule of the driver in the wristwatch. Also good.

  The vehicle guidance device of the present invention described above determines a driver's fatigue level based on the pulsometer 10 that acquires biological information such as a pulse of the driver of the vehicle, and the biological information acquired by the pulsometer 10, If it is determined that the degree is high, the route from the current location to the destination is re-searched by the navigation device 30, and the route that is easy to drive among the re-searched routes is set as the recommended route. Therefore, it is possible to determine a driver's fatigue level based on biological information such as pulse data and set a safer route.

  The present invention is not limited to the above-described embodiment, and other forms conceivable within the scope of the technical idea of the present invention are also included in the scope of the present invention as long as the characteristics of the present invention are not impaired. It is.

DESCRIPTION OF SYMBOLS 10 Pulse meter 20 Vehicle 30 Navigation apparatus 40 Vehicle controller 31 CPU
32 Second communication unit 33 Audio output unit 34 Operation unit 35 Display unit 36 Memory 37 GPS receiver

Claims (6)

Biometric information acquisition means for acquiring biometric information of the driver of the vehicle;
Determining means for determining the driver's fatigue level based on the biological information acquired by the biological information acquiring means;
If the determination means determines that the degree of fatigue is high, route search means for re-searching the route from the current location to the destination;
A vehicle guidance device comprising route setting means for setting, as a recommended route, a route that is easy to drive among routes re-searched by the route search means. In the vehicle guidance device according to claim 1,
A vehicle guidance device comprising resting place guidance means for searching and notifying a resting place nearby from the current location when the driver's fatigue level is high. In the vehicle guidance device according to claim 1 or 2,
A vehicle guidance device comprising vehicle speed notifying means for notifying the vehicle speed to a low speed when the driver's fatigue level is high. In the vehicle guidance device according to any one of claims 1 to 3,
The determination means determines the driver's fatigue level step by step based on the biological information acquired by the biological information acquisition means,
The vehicle route guidance device according to claim 1, wherein the route setting means sets a route that is easy in driving difficulty as a recommended route step by step according to the determined level of fatigue. In the vehicle guidance device according to any one of claims 1 to 4,
The biological information acquisition means acquires a pulse as the biological information,
The vehicle guidance apparatus characterized in that the determination means determines a driver's fatigue level based on a pulse. In the vehicle guidance device according to claim 5,
The vehicle guidance apparatus according to claim 1, wherein the biological information acquisition means is a wristwatch-type pulse meter.

Images