JP2012116428A - Vehicle stopping controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle stopping controller to make an efficient stop when a vehicle is stopped.SOLUTION: The vehicle stopping controller compares a distance (traffic light distance) to a stopping line corresponding to a traffic light ahead, with a distance reachable by the coasting traveling, (S3 and S4), while the vehicle 1 is coasting (S1), and while the traffic light is red or yellow (S2). When the reachable distance exceeds the traffic light one, the controller operates each kind of brake (S5), and it generates a driving power when the reachable distance does not come up to the traffic light one.

Description

  The present invention relates to a vehicle stop control device, and more particularly to a technique for appropriately stopping a vehicle toward a stop position of a traffic light.

In recent years, in order to improve vehicle fuel efficiency, various technologies have been developed, such as increasing the efficiency of an engine and mounting a motor for traveling in addition to the engine to form a hybrid electric vehicle.
However, even if improvements on the vehicle side are made, the fuel efficiency is affected by the driving method of the vehicle, so depending on the driving method of the driver who drives the vehicle, the effect of these improvements cannot be enjoyed, and the fuel efficiency deteriorates. There is a case.

  Here, as a technique related to the stop of the vehicle, there is a technique of generating a creep torque so that the stop position of the vehicle can be adjusted even in a hybrid vehicle (see Patent Document 1).

JP 2008-245517 A

However, even when creep driving is enabled in the hybrid vehicle as in Patent Document 1, fuel consumption and power consumption may be deteriorated depending on the driving skill of the driver.
When the vehicle is stopped, it can be said that it is an efficient and appropriate stop to stop at the target position while performing inertial running without performing the accelerator and brake operations.

For example, the traffic light in front of the vehicle is red (indication of inability to proceed), or the distance between the vehicle and the preceding vehicle is approaching. If the position is not reached and the accelerator is stepped on again, useless energy consumption occurs and fuel consumption deteriorates.
The present invention has been made to solve such a problem, and an object of the present invention is to provide a vehicle stop control device that can efficiently stop and improve fuel efficiency when the vehicle is stopped. It is in.

  In order to achieve the above-described object, in the vehicle stop control device according to claim 1, a driving source for driving the vehicle, an inertia traveling detection means for detecting inertia traveling of the vehicle, and a display state of a traffic light in front of the vehicle A traffic light display detecting means for detecting the traffic light, a traffic light distance calculating means for calculating a traffic light distance from the own vehicle to a stop position corresponding to a traffic light in front of the vehicle, and when the vehicle is coasting, it stops from the current position by the coasting. The reach distance calculating means for calculating the reach distance, and the inertia travel detection means detects the inertia travel of the vehicle, and the display state of the traffic light detected by the traffic light display detection means is not a passable display, but the reach distance calculation If the arrival distance calculated by the means does not reach the traffic light distance calculated by the traffic light distance calculation means, the stop corresponding to the traffic light Is characterized by and a vehicle stop control means for generating by said driving source driving force required for the location.

  The vehicle stop control device according to claim 2 further comprises braking means for braking the vehicle according to claim 1, wherein the vehicle stop control means detects the inertia running of the vehicle by the inertia running detection means, If the display state of the traffic light detected by the traffic light display detection means is not passable display, and the reach distance calculated by the reach distance calculation means exceeds the traffic light distance calculated by the traffic light distance calculation means, the traffic light A braking force required until a stop position corresponding to is generated by the braking means.

  The vehicle stop control device according to claim 3 further comprises an inter-vehicle distance calculation means for calculating an inter-vehicle distance from the preceding vehicle when there is a preceding vehicle ahead of the host vehicle. The inertia detection of the vehicle is detected by the travel detection means, and the display state of the traffic light detected by the traffic light display detection means is not a passable display, but the reach distance calculated by the reach distance calculation means is the traffic light distance calculation means If the preceding vehicle is present ahead of the host vehicle when the traffic light distance calculated by the above equation is not reached, the drive reduction or the stoppage is performed so as to stop while maintaining the inter-vehicle distance calculated by the inter-vehicle distance calculation means at a predetermined distance. It is characterized by controlling the braking means.

  The vehicle stop control device according to claim 4 is the vehicle stop control device according to claim 1, wherein the vehicle is a hybrid vehicle having the drive source as a motor and an engine, and the vehicle stop control means has an SOC of a battery used by the motor. The driving force by the motor is used when it is greater than or equal to a predetermined amount, and the driving force by the engine is used when the SOC is less than a predetermined amount.

According to a fifth aspect of the present invention, there is provided the vehicle stop control device according to the fourth aspect, wherein the braking means is a regenerative brake by a motor.
A vehicle stop control device according to a sixth aspect is characterized in that, in any one of the first to fifth aspects, the vehicle includes a display unit that displays an execution state of control by the vehicle stop control unit.

  According to the vehicle stop control device of the first aspect of the present invention using the above means, the display of the traffic signal in front of the vehicle is not allowed to pass, the vehicle is in inertial traveling, and reaches the stop position corresponding to the traffic signal in front of the vehicle. If not, a driving force is generated by the vehicle stop control means so as to reach a stop position corresponding to the traffic light. Therefore, the vehicle can be properly stopped at the stop position of the traffic light regardless of the driver's accelerator operation.

Thereby, irrespective of the driving skill of the driver, it is possible to perform an efficient stop without consuming unnecessary energy, and to improve the fuel consumption of the vehicle. Further, since the driving operation by the driver himself is reduced, the driver's fatigue can be reduced.
According to the vehicle stop control device of the second aspect, when the vehicle exceeds the stop position at the traffic signal ahead of the vehicle due to inertial running, the vehicle stop control means generates a braking force so as not to exceed the stop position at the traffic signal. Let Therefore, the vehicle can be properly stopped at the stop position of the traffic light regardless of the driver's brake operation. Thereby, an efficient stop can be performed more reliably.

According to the vehicle stop control device of the third aspect, when there is a preceding vehicle ahead of the vehicle, the vehicle stop control means controls the driving force or the braking force so that the distance between the preceding vehicle and the preceding vehicle is maintained at a predetermined distance. To do.
As a result, even when there is a preceding vehicle in front of the traffic light, it is possible to efficiently stop while maintaining a proper distance between the preceding vehicle and ensuring safety.

According to the vehicle stop control device of the fourth aspect, when the vehicle is a hybrid vehicle including an engine and a motor as drive sources, the power of the motor is changed by switching the drive source used for the vehicle stop control according to the SOC of the battery. It is possible to efficiently stop the vehicle while ensuring the above.
According to the vehicle stop control device of the fifth aspect, by using the regenerative brake by the motor as the braking means, it is possible to recover the braking energy and perform a more efficient stop.

  According to the vehicle stop control device of the sixth aspect, by displaying the execution of the vehicle stop control by the display means, the driver's operation interruption is suppressed by indicating to the driver that the vehicle automatically stops. The vehicle stop control can be executed smoothly.

1 is a schematic configuration diagram illustrating an overall configuration of a first embodiment of a vehicle stop control device according to the present invention. It is the block diagram which showed the structure of vehicle stop ECU in 1st Embodiment of the vehicle stop control apparatus which concerns on this invention. It is a flowchart showing a part of control routine which the stop control part of vehicle stop ECU in one Embodiment of the vehicle stop control apparatus which concerns on this invention performs. FIG. 4 is a flowchart showing a control routine following FIG. 3. FIG. 5 is a flowchart showing a control routine following FIGS. It is a flowchart showing a part of control routine which the stop control part of vehicle stop ECU in the modification of the vehicle stop control apparatus which concerns on this invention performs.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Referring to FIG. 1, there is shown a schematic configuration diagram of a vehicle stop control device according to a first embodiment of the present invention.
As shown in FIG. 1, a vehicle 1 includes an internal combustion engine (hereinafter referred to as an engine) 2 and an electric motor (hereinafter referred to as a motor) 4 as drive sources, and a drive torque of the engine 2 and a drive torque of the motor 4 are respectively provided. This is a so-called parallel hybrid electric vehicle (hereinafter also referred to as a hybrid vehicle) that can transmit to the drive wheels 6 and 6 of the vehicle 1.

  The motor 4 is driven to rotate by converting the DC power stored in the battery 8 into AC power by an inverter (not shown) and supplying it. In addition, the motor 4 functions as a generator when the vehicle is decelerated or the like, so that the kinetic energy generated by the rotation of the drive wheels 6 is converted into AC power via the motor 4 to generate a regenerative braking force (regenerative brake). (Braking means). Then, this AC power is converted into DC power by an inverter, and then charged to the battery 8, and the kinetic energy due to the rotation of the drive wheels 6 is recovered as electric energy.

Each wheel 6 of the vehicle 1 is provided with a brake 10 (braking means) that generates a braking force. Further, the vehicle 1 also has an exhaust brake (braking means) that uses the exhaust of the engine 2 as means for generating a braking force.
Further, the vehicle 1 is provided with various sensors and devices such as a millimeter wave radar 12, a vehicle speed sensor 14, an accelerator opening sensor 16, a brake opening sensor 18, and an information receiving unit 20.

The millimeter wave radar 12 is installed at the front portion of the vehicle 1 and detects obstacles such as a preceding vehicle in front of the vehicle 1 using millimeter wave radio waves, and detects the relative distance and relative distance between the host vehicle and the preceding vehicle. It measures speed.
The vehicle speed sensor 10 detects the vehicle speed from the wheel speed of the vehicle 1.
The accelerator opening sensor 16 detects the driver's accelerator operation amount, and the brake opening sensor 18 detects the driver's brake operation amount.

  The information receiving unit 20 receives, for example, a GPS (Global Positioning System) signal from an artificial satellite and receives the current position information of the host vehicle 1, road traffic information, traffic signal position and display information on the road, and the like. It consists of a road information receiver for receiving. Information received by the information receiving unit 20 is input to the navigation unit 22 mounted on the vehicle.

  The navigation unit 22 stores map information in advance, and as the map information, the position and width of the road, the road gradient, the altitude, the position of the traffic signal arranged on the road, and the stop corresponding to the traffic signal. Line position (stop position) information and the like are included. And the said navigation unit 22 collates with the information received by the information receiving unit 20, each information of the road on which the own vehicle is currently traveling, and the stop line position and the display state in the nearest traffic signal ahead of the own vehicle To get.

  Further, the vehicle 1 includes various control devices such as an engine ECU 24 that controls the engine 2, a motor ECU 26 that controls the motor 4, a brake ECU 28 that controls the brake 10, and a vehicle stop ECU 30 that controls the stop of the vehicle 1. Each ECU (electronic control unit) is provided with information detected by the various sensors and the like via a communication line such as a CAN (Controller Area Network).

  Each of the engine ECU 24 and the motor ECU 26 receives the accelerator operation amount information from the accelerator opening sensor 16 and generates the driving force of the engine 2 or the motor 4 according to the state of charge (SOC) of the battery 8. . For example, when the SOC of the battery 8 is low, driving by the engine 2 is performed, and when the SOC is sufficient, driving by the motor 4 is performed. It is also possible to cause the motor 4 to function as a generator by rotating the motor 4 using a part of the driving torque of the engine 2 and charge the battery 8 with the generated electric power. Further, the motor ECU 26 can be controlled to use a regenerative brake by the motor 4.

The brake ECU 28 receives brake operation amount information from the brake opening sensor 18 and controls braking force by various brakes such as the brake 10 and the exhaust brake according to the brake operation amount information.
The vehicle stop ECU 30 displays the traffic light in front of the vehicle in red (impossible to pass) or red (impossible to pass) or yellow (stop). Control to stop automatically. The vehicle stop ECU 30 is connected to an indicator lamp 32 provided at the driver's seat, and when the control of the vehicle stop ECU 30 is executed, the indicator lamp is turned on to indicate to the driver that the vehicle stop control is being executed. .

Here, the configuration of the vehicle stop ECU 30 will be described in more detail.
Referring to FIG. 2, the configuration of the vehicle stop ECU is shown in a block diagram, and will be described below with reference to FIG.
As shown in FIG. 2, the vehicle stop ECU 30 has a traffic signal information acquisition unit 40 and a host vehicle position recognition unit 42, and acquires corresponding information from the navigation unit 22.

Specifically, the traffic signal information acquisition unit 40 acquires information on the position of the stop line corresponding to the traffic signal in front of the vehicle and the display state of the traffic signal. Here, the traffic signal in front of the vehicle is the traffic signal at the nearest position among the traffic signals within a predetermined distance in the traveling direction of the road on which the host vehicle is traveling.
The own vehicle position recognizing unit 42 is based on the GPS information from the navigation unit 22 and the map information stored in advance, and the own vehicle position such as the running position of the own vehicle on the map and the gradient of the currently running road. Recognize information.

The traffic signal information acquired by the traffic signal information acquisition unit 40 and the host vehicle position information recognized by the host vehicle position recognition unit 42 are input to the traffic signal distance calculation unit 44 of the vehicle stop ECU 30.
The traffic light distance calculation unit 44 calculates a distance (hereinafter referred to as a traffic light distance) between the host vehicle and a stop line corresponding to a traffic signal ahead of the host vehicle.

The own vehicle position information recognized by the own vehicle position recognition unit 42 is input to the reach distance calculation unit 46 of the vehicle stop ECU 30 together with the vehicle speed information detected by the vehicle speed sensor 14.
The reach distance calculation unit 46 calculates the distance (hereinafter referred to as the reach distance) that is reached when coasting is started from the current vehicle speed while taking into account road information such as the road gradient on which the host vehicle is currently traveling. To do.

In addition, information detected by the millimeter wave radar 12 is input to the inter-vehicle distance calculation unit 48 of the vehicle stop ECU 30. The inter-vehicle distance calculation unit 48 calculates the inter-vehicle distance between the preceding vehicle and the host vehicle when the preceding vehicle is detected by the millimeter wave radar 12.
Further, information on the battery 8 is input to the SOC recognition unit 50 of the vehicle stop ECU 30. The SOC recognition unit 50 recognizes the current SOC of the battery 8.

The vehicle stop ECU 30 further includes a vehicle stop control unit 52. The vehicle stop control unit 52 includes the traffic light distance calculation unit 44, the reach distance calculation unit 46, the inter-vehicle distance calculation unit 48, and the SOC recognition unit 50. Information and information from the vehicle speed sensor 14, the accelerator opening sensor 16, and the brake opening sensor 18 are input.
The vehicle stop control unit 52, based on each input information, through the engine ECU 24, the motor ECU 26, and the brake ECU 28 to perform an appropriate stop until the vehicle 1 reaches the traffic signal ahead during inertial traveling. The vehicle stop control is performed to adjust the driving force by the engine 2 and the motor 4 and the braking force by the brake 10 and the motor 4. Further, the indicator lamp 32 is turned on when the vehicle stop control is executed.

Hereinafter, the vehicle stop control executed by the vehicle stop control unit 52 of the vehicle stop ECU 30 will be described in detail.
FIG. 3 shows a flowchart showing a vehicle stop control routine executed in the vehicle stop control unit of the vehicle stop ECU 30, which will be described below along the same flowchart.

  As shown in step S1 of FIG. 3, the vehicle stop control unit 52 of the vehicle stop ECU 30 first determines whether or not the vehicle 1 is coasting. This is determined from the information from the accelerator opening sensor 16 and the brake opening sensor 18 depending on whether the accelerator operation is not performed (accelerator OFF) and the brake operation is not performed (brake OFF). When the driver performs an accelerator operation or a brake operation, the determination result is false (No), and the routine is returned to give priority to the operation by the driver. On the other hand, if the vehicle is coasting, the determination result is true (Yes), and the process proceeds to the next step S2.

  In step S2, it is determined from the information acquired by the traffic signal information acquisition unit 40 whether the display state of the closest traffic signal in front of the host vehicle is red (traffic prohibited) or yellow (stop). When the display state of the traffic light is blue (passable), the determination result is false (No), the vehicle stop control is not performed, and the routine is returned. On the other hand, when the display state of the traffic light is red or yellow and the vehicle 1 needs to be stopped, the process proceeds to the next step S3.

In step S <b> 3, the indicator lamp 32 is turned on to indicate execution of the vehicle stop control to the driver, and the traffic light distance calculation unit 44 and the arrival distance calculation unit 46 calculate the traffic light distance and the arrival distance.
Subsequently, in step S4, it is determined whether or not the arrival distance calculated in step S3 is appropriate with respect to the traffic light distance, that is, whether or not the stop line of the traffic light can be reached by coasting from the current vehicle speed. If the reach distance is almost the same as the traffic light distance and can be stopped properly if the current inertial running is maintained, the routine is returned to maintain the current state.

On the other hand, if the vehicle speed is excessive and the reach distance exceeds the traffic light distance, the process proceeds to step S5.
In step S5, the vehicle stop control unit 52 uses various brakes such as the brake 10, the regenerative brake by the motor 4, and the exhaust brake to generate a braking force so that the reach distance becomes equal to the traffic light distance, and the routine is executed. Return. Specifically, a braking force is generated so as to reduce the vehicle speed at a constant deceleration until the stop line of the traffic light is calculated backward from the traffic light distance.

On the other hand, if the reach distance does not reach the traffic light distance due to insufficient vehicle speed in step S4, the process proceeds to step S6 in FIG.
In step S6, it is determined from the information from the inter-vehicle distance calculation unit 48 whether there is a preceding vehicle. If the determination result is true (Yes), that is, if there is a preceding vehicle, the process proceeds to the next step S7 in order to stop the vehicle while keeping the inter-vehicle distance to the preceding vehicle at a predetermined distance.

  In step S7, the inter-vehicle distance calculation unit 48 calculates the inter-vehicle distance from the preceding vehicle, and in the subsequent step S8, it is determined whether or not the calculated inter-vehicle distance is greater than a predetermined distance. The predetermined distance is a distance that can avoid a collision with the preceding vehicle, and is set according to the vehicle speed. If the inter-vehicle distance is equal to or less than the predetermined distance, the determination result is false (No), and the process proceeds to step S9.

In step S9, the vehicle stop control unit 52 generates a braking force by various brakes in order to increase the inter-vehicle distance to the preceding vehicle to a predetermined distance, and returns the routine.
On the other hand, if the determination result in step S8 is true (Yes), that is, if the inter-vehicle distance is greater than the predetermined distance, the process proceeds to the next step S10.

In step S10, it is determined whether or not the SOC of the battery 8 recognized by the SOC recognition unit 50 is greater than a predetermined SOC (for example, 50%). If the SOC is greater than the predetermined SOC, the determination result is true (Yes), and the process proceeds to step S11.
In step S <b> 11, motor assist for causing the vehicle 1 to generate driving force by the motor 4 via the motor ECU 26 is performed.

In the next step S12, it is determined whether or not the inter-vehicle distance is equal to or less than a predetermined distance. If the determination result is false (No), the process returns to step S11 and the motor assist is continued. On the other hand, when the inter-vehicle distance approaches a predetermined distance and the determination result is true (Yes), the process proceeds to the next step S13.
In step S13, the motor assist is terminated to maintain the inter-vehicle distance at a predetermined distance, the coasting is returned to, and the routine is returned.

If the SOC is equal to or lower than the predetermined SOC in step S10, the process proceeds to step S14.
In step S <b> 14, engine assist for causing the vehicle 1 to generate driving force by the engine 2 is performed via the engine ECU 24.
In the next step S15, it is determined whether or not the inter-vehicle distance is equal to or less than a predetermined distance. If the determination result is false (No), the process returns to step S14 to continue the engine assist. On the other hand, when the inter-vehicle distance approaches a predetermined distance and the determination result is true (Yes), the process proceeds to the next step S16.

In step S16, the engine assist is terminated to maintain the inter-vehicle distance at a predetermined distance, the inertia traveling is returned, and the routine is returned.
Further, in step S6, when the vehicle speed is insufficient during inertial traveling of the vehicle 1 and the stop line of the traffic light is not reached, and there is no preceding vehicle, the process proceeds to step S17 in FIG.

In step S17, it is determined whether or not the SOC is larger than the predetermined SOC as in step S10. If the determination result is true (Yes), the process proceeds to step S18.
In step S18, motor assist is performed, and in the next step S19, it is determined whether or not the reach distance is equal to or greater than the traffic signal distance by increasing the vehicle speed by the motor assist. If the determination result is false (No), the process returns to step S18 to continue motor assist. If the determination result is true (Yes), the process proceeds to the next step S20.

In step S20, the motor assist is finished to return to the inertia running so as to maintain that the reach distance is appropriate, and the routine is returned.
On the other hand, if the SOC is equal to or lower than the predetermined SOC in step S17, the process proceeds to step S21.
In step S21, the engine assist is performed. In the next step S22, it is determined whether or not the reach distance is equal to or greater than the traffic signal distance by increasing the vehicle speed by the engine assist. If the determination result is false (No), the process returns to step S21 to continue the engine assist. If the determination result is true (Yes), the process proceeds to the next step S23.

In step S23, the engine assist is terminated and the inertial running is ended so as to maintain that the reach distance is appropriate, and the routine is returned.
The vehicle stop control unit 52 of the vehicle stop ECU 30 repeats the control routine as described above until the vehicle stops. Even if the vehicle stop control is being executed, if the driver directly performs an accelerator pedal operation or a brake pedal operation, the vehicle stop control is immediately terminated to give priority to the operation. When the vehicle stop control is finished, the indicator lamp 32 is turned off.

  As described above, when the signal in front of the vehicle is red or yellow and the vehicle 1 is coasting and the reach distance of the vehicle 1 does not reach the traffic light distance, the vehicle stop ECU 30 reaches the stop line of the traffic light. The driving force is generated by the engine 2 or the motor 4 so that the stopping line is exceeded, and the braking force is generated so as not to exceed the stopping line.

Therefore, the vehicle 1 can appropriately stop at the stop line regardless of the driver's accelerator pedal operation and brake pedal operation. Further, since the driving operation by the driver himself is reduced, the driver's fatigue can be reduced.
Further, when there is a preceding vehicle in front of the vehicle 1, the driving force and the braking force are controlled so that the distance between the preceding vehicle and the preceding vehicle is maintained at a predetermined distance. As a result, even when there is a preceding vehicle in front of the traffic light, it is possible to efficiently stop while maintaining a proper distance between the preceding vehicle and ensuring safety.

  In addition, the vehicle 1 is a hybrid vehicle including the engine 2 and the motor 4 as drive sources, and the drive source used for vehicle stop control is switched according to the SOC of the battery 8, so that the power of the motor 4 is secured. The vehicle can be stopped efficiently. Furthermore, by using the regenerative brake by the motor 4 at the time of braking, it is possible to recover braking energy and perform more efficient stop.

When the vehicle stop control is executed, the indicator lamp 32 is turned on to indicate to the driver that the vehicle 1 is automatically stopped, thereby suppressing interruption of the driver's operation and smoothing the vehicle stop control. Can be executed.
Therefore, according to the vehicle stop control device of the present invention, it is possible to perform an efficient stop without consuming unnecessary energy regardless of the driving skill of the driver, and to improve the fuel consumption of the vehicle 1. Can do.

Although the description of the embodiment of the vehicle stop control device according to the present invention is finished above, the embodiment is not limited to the above embodiment.
For example, in the above embodiment, the vehicle 1 is a hybrid vehicle including the engine 2 and the motor 4 as drive sources, but the present invention can also be applied to a vehicle using only the engine as a drive source.

Specifically, the vehicle stop control performed by the vehicle stop control unit of the vehicle stop ECU for the engine-only vehicle is shown in FIG. 6 when it is determined in step S4 of FIG. 3 that the reach distance does not reach the traffic light distance. Proceed to step S30.
In step S30, it is determined whether or not there is a preceding vehicle. If there is a preceding vehicle, the process proceeds to step S31 in order to stop the vehicle while keeping the inter-vehicle distance at a predetermined distance.

In step S31, an inter-vehicle distance is calculated. If the inter-vehicle distance is equal to or smaller than a predetermined distance in step 32, brake control is performed in step S33.
On the other hand, if the inter-vehicle distance is greater than the predetermined distance in step S32, engine assist is performed in step S34, and engine assist is maintained until the inter-vehicle distance becomes equal to or less than the predetermined distance in step S35.

Then, when the inter-vehicle distance becomes equal to or less than the predetermined distance, the process proceeds to step S36, the engine assist is finished, and the routine is returned.
If there is no preceding vehicle in step S30, engine assist is performed in step S37, and the engine assist is maintained until the reach distance is equal to or less than the traffic light distance in step S35.

Then, when the reach distance becomes equal to or less than the traffic light distance, the process proceeds to step S39, the engine assist is finished, and the routine is returned.
Thereby, the same effect as the above-mentioned embodiment can be produced also in a vehicle having only an engine.
In addition, in the above embodiment, the stop position corresponding to the traffic signal and the display state of the traffic signal and the information receiving unit via the navigation unit are acquired, but the means for acquiring the stop position and the display state of the traffic signal is included in this. However, the present invention is not limited to this. For example, a camera capable of discriminating display of a traffic light or a stop line may be mounted on the vehicle.

1 vehicle 2 engine (drive source)
4 Motor (drive source)
10 Brake (braking means)
12 millimeter wave radar 14 vehicle speed sensor 16 accelerator opening sensor 18 brake opening sensor 20 information receiving unit 22 navigation unit 30 vehicle stop ECU (vehicle stop control means)
32 Indicator light 52 Vehicle stop control part

Claims (6)

A drive source for driving the vehicle;
Inertia running detection means for detecting inertia running of the vehicle;
Traffic light display detection means for detecting the display state of the traffic light in front of the vehicle;
A traffic light distance calculating means for calculating a traffic light distance from the own vehicle to a stop position corresponding to the traffic light in front of the vehicle;
A reach distance calculating means for calculating a reach distance to stop by the inertia travel from the current location at the time of inertia travel of the vehicle;
The inertial running detection means detects the inertial running of the vehicle, and the display state of the traffic light detected by the traffic light display detection means is not a passable display, but the arrival distance calculated by the arrival distance calculation means is the traffic light distance Vehicle stop control means for causing the drive source to generate a driving force required to reach a stop position corresponding to the traffic light when the traffic light distance calculated by the calculation means is not reached;
A vehicle stop control device comprising: Furthermore, a braking means for braking the vehicle is provided,
In the vehicle stop control means, the inertia running detection of the vehicle is detected by the inertia running detection means, and the display state of the traffic light detected by the traffic light display detection means is not a passable display but is calculated by the reach distance calculation means. The braking means generates a braking force required to reach a stop position corresponding to the traffic light when the reaching distance exceeds the traffic light distance calculated by the traffic light distance calculation means. Vehicle stop control device. Furthermore, when there is a preceding vehicle ahead of the host vehicle, the vehicle includes an inter-vehicle distance calculating means for calculating an inter-vehicle distance from the preceding vehicle.
The inertial running detection means detects the inertial running of the vehicle, and the display state of the traffic light detected by the traffic light display detection means is not a passable display, but the arrival distance calculated by the arrival distance calculation means is the traffic light distance When the traffic signal distance calculated by the calculating means is not reached, and there is a preceding vehicle ahead of the host vehicle, the driving is performed so as to stop while maintaining the inter-vehicle distance calculated by the inter-vehicle distance calculating means at a predetermined distance. 3. The vehicle stop control device according to claim 2, wherein the reduction or braking means is controlled. The vehicle is a hybrid vehicle having a motor and an engine as the drive source,
The vehicle stop control means uses the driving force by the motor when the SOC of the battery used by the motor is greater than or equal to a predetermined amount, and uses the driving force by the engine when the SOC is less than the predetermined amount. The vehicle stop control device according to claim 1 or 3, characterized in that   5. The vehicle stop control device according to claim 4, wherein the braking means is a regenerative brake by a motor.   The vehicle stop control device according to claim 1, wherein the vehicle includes display means for displaying an execution state of control by the vehicle stop control means.

Images