JPH061222A - Vehicle safety device - Google Patents

Abstract

PURPOSE:To start the operation of a safety device at an optimum timing as much as possible according to various traveling condition in the safety device of a vehicle where an automatic braking device, an alarming device or the like are provided in order to stop the vehicle at the vehicle stopping position such as the once-stop line on the traveling road. CONSTITUTION:A safety device consists of a safety device body 2 consisiting of an automatic braking device 2a and an alarming device 2b, a vehicle stopping position detecting means 4 to detect the vehicle stopping position, a control means 8 to operate the safety device body 2 so as to stop the vehicle at the vehicle stopping position, and an operation starting condition changing means 10 to change the operation starting condition of the safety device body 2 in the control means 8 according to the acceleration/deceleration condition of the vehicle and the vehicle speed operating condition. The operation starting condition can greatly be changed according to the vehicle speed operating condition, and at the same time, can less be changed according to the acceleration/ deceleration condition of the vehicle for the respective vehicle speed operating conditions.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention detects a vehicle stop position on a traveling road and automatically brakes or drives the vehicle at a predetermined timing to surely stop the vehicle at the vehicle stop position. The present invention relates to a safety device for a vehicle that issues an alarm to make a person brake.

[0002]

2. Description of the Related Art Conventionally, a vehicle stop position on a traveling road is detected, and a vehicle is automatically braked at a predetermined timing or a driver is braked so as to surely stop the vehicle at the vehicle stop position. Therefore, a vehicle safety device that issues an alarm has been considered. For example, JP-A-60-18
Japanese Patent No. 9100 discloses a vehicle safety system that detects a vehicle stop position on a traveling road, issues an alarm at a predetermined timing to stop the vehicle at the vehicle stop position, and brakes a driver. A device is disclosed.

[0003]

By the way, in order to surely stop the vehicle at the vehicle stop position as described above, which is conventionally considered, the vehicle is automatically braked at a predetermined timing or the driver is braked. Therefore, in a vehicle safety device that issues an alarm, the operation start condition of the safety device, that is, the automatic braking start condition and the alarm start condition are usually fixed, and even if they are made variable, at most It has only been considered to change the operation start condition according to the vehicle speed and the friction coefficient of the road surface.
More specifically, for example, the distance between the host vehicle and the vehicle stop position is generally used as the operation start condition of the safety device, and the distance is equal to or less than a predetermined threshold value set in advance. Configured to activate the safety device,
In that case, the threshold value may be fixed or at most be changed according to the vehicle speed and the friction coefficient of the road surface.

However, in order to surely stop the host vehicle at the vehicle stop position, at least at which point in time the operation of the safety device must be started, such as the host vehicle and the vehicle stop position. When it is necessary to start the operation of the safety device when the distance between them becomes at least a predetermined threshold value, the predetermined threshold value is not always the same value, but the vehicle speed and the friction coefficient of the road surface. In addition to the vehicle speed and the friction coefficient of the road surface on which the vehicle travels, the vehicle also changes according to various traveling states of the vehicle.

Therefore, in the case where the operation start condition of the safety device is fixed like the above-mentioned conventional safety device or is changed depending on the vehicle speed or the friction coefficient of the road surface at the most, it is always required to be operated in accordance with various traveling states. It is difficult to start the operation of the safety device at the optimum timing, and in some cases, the safety device is activated too early and the driver is trying to brake, but the safety device is activated and the driver feels uncomfortable or uncomfortable. There are problems such as a feeling of pleasure or an operation that is too slow to reliably stop at the vehicle stop position.

In view of the above circumstances, an object of the present invention is to provide a vehicle safety device capable of starting the operation of the safety device at the optimum timing according to various running conditions. .

[0007]

In order to achieve the above object, a vehicle safety device according to the present invention includes a safety device main body for braking a host vehicle and a vehicle stop position for detecting a vehicle stop position. A vehicle safety device comprising: a detection device; and a control device that operates the safety device body so that the host vehicle can be stopped at the vehicle stop position based on the detection of the vehicle stop position by the vehicle stop position detection device. The control means includes an operation start condition changing means for changing the operation start condition of the safety device main body in accordance with the acceleration / deceleration state of the host vehicle.

The operation start condition changing means changes the operation start condition in accordance with the vehicle speed operation state of the driver, or changes the operation start condition largely according to the vehicle speed operation state of the driver, and for each vehicle speed operation state. It can be configured to be changed to a small value according to the acceleration / deceleration state of the host vehicle.

The safety device body is composed of an automatic braking device for the own vehicle and an alarm device which is activated before the automatic braking device starts operating, and the operation start condition changing means is provided for the alarm device. It can be configured to change the start condition.

In order to achieve the above object, another vehicle safety device according to the present invention comprises a safety device body for braking the own vehicle, vehicle stop position detecting means for detecting a vehicle stop position, Vehicle distance detecting means for detecting a distance between the host vehicle and a front vehicle located in front of the host vehicle, the vehicle stop position based on detection of the vehicle stop position and detection of the distance between the host vehicle and the front vehicle. And a control means for activating the safety device main body so that the host vehicle can be stopped and contact of the host vehicle with a preceding vehicle can be avoided. When the preceding vehicle exists between the host vehicle and the vehicle stop position, the operation start condition for the main body of the safety device is eliminated by eliminating the operation start condition for stopping the host vehicle at the vehicle stop position. vehicle Characterized in that it comprises an operation start condition changing means for only operating the start conditions for preventing contact.

[0011]

As described above, the operation start condition of the safety device main body for surely stopping the own vehicle at the vehicle stop position, for example, the own vehicle and the vehicle stop position where the operation of the safety device main body should be started. The distance between them is not always uniform, and varies depending on the vehicle speed and the friction coefficient of the road surface on which the vehicle travels, and also the various traveling states of the vehicle, particularly the acceleration / deceleration state of the vehicle. It also changes depending on the vehicle speed operation state of the driver.

As described above, the vehicle safety device according to the present invention changes the operation start condition of the safety device main body depending on the acceleration / deceleration state of the host vehicle and the vehicle speed operation state of the driver. Accordingly, the operation of the safety device can always be started at an optimum timing, and the vehicle safety can be reliably ensured without causing the driver to feel uncomfortable or uncomfortable.

Further, in the case of changing the operation start condition of the safety device body depending on the acceleration / deceleration state of the own vehicle and the vehicle speed operation state of the driver, the operation start condition is largely changed according to the vehicle speed operation state of the driver. At the same time, the driver's recognition is prioritized by changing each vehicle speed operation state to a small value according to the acceleration / deceleration state of the vehicle, that is, by changing the vehicle speed operation state of the driver mainly and the acceleration / deceleration state of the vehicle By doing so, the operation start condition can be changed, more reliable vehicle safety can be ensured, and the driver's discomfort or discomfort with respect to the operation of the safety device body can be further reduced.

Further, the safety device main body is composed of an automatic braking device of the own vehicle and an alarm device which is activated before the operation start time of the automatic braking device, and the operation start condition changing means is the alarm device. By configuring so as to change the operation start condition of, the necessity of braking can be notified to the driver at an appropriate timing at an earlier stage, and the safety of the vehicle can be further improved.

Further, in the vehicle safety device, not only the vehicle stop position but also the distance between the host vehicle and the preceding vehicle located in front of the host vehicle is detected to stop the host vehicle at the vehicle stop position. It is conceivable that the safety device body is actuated in order to both avoid the contact of the host vehicle with the preceding vehicle. Taking up whether or not the vehicle exists, and when the preceding vehicle exists between the own vehicle and the vehicle stop position, the operation start condition of the safety device main body for stopping the own vehicle to the vehicle stop position is set to zero, That is, the operation start condition for stopping at the vehicle stop position is eliminated, and only the operation start condition for avoiding the contact such as the collision with the preceding vehicle is set.

As described above, when the safety device body is operated not only to stop the vehicle at the vehicle stop position but also to avoid contact with the preceding vehicle, the control means stops the vehicle at the vehicle stop position. And the avoidance of contact with the preceding vehicle must be calculated, which increases the load on the control means.
When the preceding vehicle exists between the host vehicle and the vehicle stop position, it is considered that the preceding vehicle naturally stops at the vehicle stop position. Therefore, in that case, paying attention only to the preceding vehicle, If the safety device main body is controlled to operate in order to avoid contact, it is possible to inevitably secure both avoidance of contact with the preceding vehicle and stop of the host vehicle before the vehicle stop position. Therefore, with the above configuration, the safety of the vehicle can be improved and the load on the control means can be reduced.

[0017]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 shows a first embodiment of a vehicle safety device according to the present invention.
FIG. 2 is a block diagram showing an embodiment, and FIG. 2 is a plan view showing a relationship between a vehicle stop position, a road marker, a host vehicle, and a front vehicle.

The apparatus of the illustrated embodiment is provided with a safety device body 2 for braking the host vehicle, a vehicle stop position detecting means 4 for detecting the vehicle stop position, the host vehicle and the front of the host vehicle. A vehicle distance detecting means 6 for detecting a distance to a preceding vehicle, and so that the own vehicle can stop at the vehicle stopping position based on detection of the vehicle stop position and detection of a distance between the own vehicle and the preceding vehicle, and Control means 8 for operating the safety device body 2 so as to avoid contact of the own vehicle with the preceding vehicle, and the safety device body 2 in the control means 8.
The operation start condition changing means 10 for changing the operation start condition according to the acceleration / deceleration state of the own vehicle and the vehicle speed operation state of the driver.

The safety device main body 2 is for braking the own vehicle, and in this embodiment, the automatic braking device 2a for automatically braking the own vehicle and the driver of the own vehicle for braking operation. The alarm device 2b is configured to issue an alarm in order to call out the alarm, and the alarm device 2b is set so as to be activated before the start of the operation of the automatic braking device 2a.

The vehicle stop position detecting means 4 is for detecting a position where the vehicle should temporarily stop, such as a vehicle stop line at an intersection or a position before the intersection to be stopped although there is no vehicle stop line. In the example, the road surface
Road marker reading means for reading distance information L's to the vehicle stop line 30 magnetically written in the road marker 32 provided at a predetermined distance before the vehicle stop line 30 on the intersection 28 from the road marker 32. It is composed by.

The vehicle distance detecting means 6 detects the distance L ₁ between the host vehicle 34 and the front vehicle 36 located in front of the host vehicle 34, and emits, for example, laser, radio waves, ultrasonic waves or the like. It is possible to use a device that detects the inter-vehicle distance L ₁ with respect to the preceding vehicle by the time required for receiving and receiving the reflection from the preceding vehicle.

The control means 8 can stop at the vehicle stop line 30 based on the detection of the distance L's to the vehicle stop line 30 and the detection of the distance L ₁ between the own vehicle 34 and the front vehicle 36. In addition, the safety device main body 2 is operated so as to avoid contact with the front vehicle 36, and therefore the own vehicle speed for detecting the own vehicle speed V ₀ together with the vehicle stop position detecting means 4 and the vehicle distance detecting means 6 The output from the detecting means 12 and the road surface μ detecting means 14 for detecting the friction coefficient μ of the traveling road surface is inputted.

The control means 8 controls the input L's,
Based on L ₁ , V ₀ and μ, an alarm start distance L ′ _{2 at} which an alarm should be issued to urge the driver to brake in order to stop the own vehicle 34 at the vehicle stop line 30, and the own vehicle 34 An automatic braking start distance L' _{0 at} which automatic braking should be started to stop at the stop line 30 and an alarm that urges the driver to perform braking to avoid contact of the vehicle 34 with the preceding vehicle 36 are issued. an alarm start distance L ₂ to an automatic braking start distance L ₀ should start the automatic braking in order to avoid contact of the front vehicle 36 of the vehicle 34 to avoid contact with the front vehicle 36 of the vehicle 34 calculating a release distance L ₃ to be released alarm and automatic braking for, and the distance L _'1 between the vehicle 34 and the vehicle stop line 30
To calculate.

L' ₀ and L' ₂ are calculated by a predetermined arithmetic expression based on the input vehicle speed V ₀ and the road surface friction coefficient μ, and an alarm is issued before automatic braking is applied. L' ₂ >L' ₀ . Above L ₀ , L ₂
And L ₃ are calculated from the input vehicle speed V ₀ , the road surface friction coefficient μ, and the relative speed V ₁ between the own vehicle and the preceding vehicle, and L is set so that an alarm is issued before automatic braking is applied.
₂ > L ₀ and L ₃ > L ₀ , L ₂ . The relative velocity V ₁ is calculated by the time derivative of L ₁ . Further, L ′ ₁ is obtained by calculating the traveling distance 1 ′ ₁ from the road marker 32 by time integration of the vehicle speed V ₀ ,
It is calculated by subtracting this l' ₁ from the above L's.

[0026] Then, the control unit 8, the L _'1 is L' actuates the alarm device 2b When small or L ₁ from ₂ becomes smaller than L _2, smaller even comb than L _'1 is L' ₀ Is L ₁
When L is smaller than L _{0, the} automatic braking device 2a is activated, and when L ₁ is larger than L _{3, the} safety device main body 2 is to cancel the alarm of the alarm device 2b and the automatic braking of the automatic braking device 2a.
To control.

The vehicle speed detecting means 12 may be, for example, a speedometer provided in the vehicle.
Further, the road surface μ detecting means 14 detects, for example, the roughness of the traveling road surface, that is, the road surface μ, by emitting light or the like toward the traveling road surface, receiving regular reflection from the road surface, and receiving the regular reflection amount. Can be used.

The operation start condition changing means 10 changes the operation start condition of the safety device body 2. In this embodiment, only the alarm start distance L' ₂ for stopping at the vehicle stop line 30 is changed. In addition, the change is configured to be largely changed according to the vehicle speed operation state of the driver and to be changed small for each vehicle speed operation state according to the acceleration / deceleration state of the host vehicle.

More specifically, the operation start condition changing means 10
Is provided in the control means 8, and the control means 8 inputs the outputs from the accelerator switch 16 for detecting the depression of the accelerator pedal and the brake switch 18 for detecting the depression of the brake pedal. State judgment means
20 and a vehicle speed operation state determination means 22 are provided, and the acceleration / deceleration state determination means 20 determines the acceleration / deceleration by differentiating the vehicle speed V ₀ with respect to time to determine whether the vehicle is in an accelerating state, a constant velocity state or a decelerating state, and the determination result thereof. Based on the outputs from the accelerator switch 16 and the brake switch 18, the vehicle speed operation state determination means 22 determines whether the accelerator pedal is depressed or the brake pedal is depressed (both pedals are not depressed). Judge,
The judgment result is input to the operation start condition changing means 10.

Then, the operation starting condition changing means 10 selects the corresponding correction category I to IX from the correction category map shown in FIG. 6 based on the input acceleration / deceleration state and vehicle speed operation state, and the selection is made. Based on the correction categories I to IX, the correction amount L' _2α corresponding to the correction category selected from the correction amount graph shown in FIG. 7 is obtained, this correction amount L' _2α is added to the above L' ₂ , and the addition result is Replace with L' ₂ , that is, change the alarm start distance L' ₂ .

As will be understood from FIGS. 6 and 7, the above-mentioned change of L' ₂ is such that the correction amount L' _2α changes greatly depending on the vehicle speed operation state and changes _slightly depending on the acceleration / deceleration state, and accordingly changes to the vehicle speed operation state. In accordance with the acceleration / deceleration state, the vehicle speed is changed to a small value in accordance with the acceleration / deceleration state. Stated addition, L _'2 changes, brake depression for vehicle operating conditions, without, L in the order of the accelerator pedal depression' as clogging alarm start timing so ₂ increases the faster the deceleration for deceleration state, It is changed so that L' ₂ increases in the order of constant speed and acceleration, that is, the alarm start timing is advanced.

Next, with respect to the operation of the apparatus shown in FIG. 1, a flow chart showing a concrete procedure thereof, FIG.
This will be described with reference to FIGS. 4 and 5.

First, at R1, the vehicle 34 is a road surface marker.
Determine if you passed 32. If it has not passed yet, the routine proceeds to R2 to execute the basic control for avoiding contact with the front vehicle 36, where V ₀ , μ, L ₁ is detected, and at R3, L ₀ , L ₂ , L are detected by the method described above. Calculate ₃ . Then, R4 determines whether the relative speed V ₁ is positive or negative (when it is positive, the vehicle is approaching the front vehicle, and when it is negative, the vehicle is distant), and when V ₁ is 0 or more, R 5 is L ₁ and L ₁ is greater than L ₂ . It is judged whether it is small or not, and if it is not small yet, it proceeds to return, and when it becomes small, an alarm is issued at R6, then at R7 it is judged whether L ₁ is smaller than L ₀ , and it is still small. If not, proceed to return, and when it becomes small, apply automatic braking with R8. Further, L ₁ is determined whether small or not than L ₃ in the case of less than the relative speed is 0 in R4 R9, go directly to the return if less than L _3,
When L ₁ becomes L ₃ or more, R11 alarms R6 and R8
Release the automatic braking of.

Next, when the vehicle passes through the road marker 32 at R1, that is, the vehicle is located on the road marker 32 as shown by the chain double-dashed line in FIG. When it is determined that the vehicle passes through the road marker 32 by reading the road marker 32, the process proceeds to R12, where the road marker 32 is also read to read the road marker 32 from the road marker 32 to the vehicle stop line 30. To detect the distance L's. Subsequently, R13 detects V ₀ , μ, and L ₁ , and R14 detects L ₀ by the above-mentioned method.
_{0, L 2, L '0} , L' 1, L '2 is calculated, to detect a deceleration state and a vehicle speed operational state described above in R15, based on the their deceleration state and the vehicle speed operating state in R16 Then, the correction amount L' _2α is calculated in accordance with the correction classification maps and the correction amount graphs shown in FIGS. 6 and 7, and L' ₂ is changed by adding the correction amount L' _2α in R17. Then, the brake pedal is turned on to inform the vehicle behind that the vehicle is about to stop.

Subsequently, at R19, it is judged whether or not the vehicle speed V ₀ is greater than 0, and if it is greater than _{0, that} is, if the vehicle is not still stopped, then at R20 L ₁ -L ₂ and L' _1- L ' ₂ It is determined whether the degree of danger with respect to the preceding vehicle or the degree of danger with respect to the stop line with respect to the alarm is large by comparing with, and if the degree of danger with respect to the stop line is great, that is, L ′ ₁ −L ′ ₂ is better. comparing the L _'1 and L' ₂ and in R21 if small, who risk degree for the previous vehicle is that is L ₁ -L ₂ if large is the L ₁ and L ₂ in R22 if small Compare and in each case L '
_1, L ₁ is an alarm in R23 if smaller than alarm start distance L _'2, L ₂ respectively, the flow returns to R13 unless a small.

[0036] In addition, after issuing a warning is L ₁ -L ₀ with R24
The turn compares the L _'1 -L' ₀ to determine risk degree of either relates to an automatic braking is large, if the dangerous degree large with respect to the stop line R25 in L _'1 and L' ₀ comparing the door, from the front risk degree for the vehicle by comparing the L ₁ and L ₀ in R26 if large, also L _'1, L ₁ is started each automatic braking distance L' cases _0, L ₀ If it is small, automatic braking is applied at R27, and if it is not small, the process returns to R13.

If V ₀ is not greater than _{0 at} R19, that is, if it is stopped, the routine proceeds to R28, where it is determined whether an alarm or automatic braking is activated. If not, the brake lamp is turned off at R30. After that, the program proceeds to return, and if they are operating, they are deactivated at R29, and the brake lamp is turned off at R30 before proceeding to return.

FIG. 8 is a block diagram showing another embodiment of the vehicle safety device according to the present invention. This embodiment has a configuration similar to that of the embodiment shown in FIG. 1 described above, and further includes front vehicle position determining means 24 for determining whether or not a front vehicle exists between the own vehicle and the vehicle stop position. If there is a front vehicle, the operation start condition changing means 10 is set so that the operation start condition for stopping the own vehicle at the vehicle stop position is set to zero and only the operation start condition for avoiding contact with the front vehicle is set. The operation starting condition of the safety device main body 2 is changed by.

The preceding vehicle position determining means 24 determines the vehicle speed V _0.
Time integral 'seek _1, l from L's' travel distance l from the road marker 32 by subtracting the ₁ 'to calculate a _1, the L' distance L from the vehicle to the stop line ₁ and the vehicle of comparing the distance L ₁ to the front vehicle from absent before the vehicle between the vehicle and the vehicle stop position if L _1> L 'is _1, L _1>
If it is not L' _1, it is determined that the preceding vehicle exists. Also,
As in the embodiment shown in FIG. 1, the operation start condition changing means 10 changes the operation start condition of the safety device main body 2 for stopping at the vehicle stop position based on the acceleration / deceleration state and the vehicle speed operation state, and at the same time as the own vehicle. As described above, the operation starting condition of the safety device main body 2 for stopping at the vehicle stop position is changed to zero depending on whether or not the preceding vehicle is present between the vehicle stop position and the vehicle stop position.

The components other than the front vehicle position determining means 24 and the operation starting condition changing means 10 are basically the same as those shown in FIG. 1 and have the same functions, and therefore the explanations thereof will be omitted.

Next, the specific operation procedure of the second embodiment apparatus shown in FIG. 8 will be described with reference to the flow charts shown in FIGS.

First, as in the case of the embodiment shown in FIG.
In S1, it is determined whether or not the road marker has been passed, and if it has not passed, the basic control for avoiding contact with the preceding vehicle shown in S2 to S11 (without S10) is performed. Since this basic control is the same as the control shown in R2 to R11 (without R10), the description thereof will be omitted.

When passing the road marker, S12
L's is detected at S, V ₀ , μ and L ₁ are detected at S 13, and S '
At 14, L ₀ , L ₂ , L ′ ₀ , L ′ ₁ and L ′ ₂ are calculated, and S
The acceleration / deceleration state and the vehicle speed operation state are detected at 15 and L'at S16.
_2α is calculated and S ′ is set to L ′ ₂ = L ′ ₂ + L ′ _2α, and S
Turn on the brake lamp at 18. These S12-S18
Since it is the same as R12 to R18 described above, detailed description thereof will be omitted.

Then, in S19, L ₁ and L' ₁ are compared,
If L ₁ is larger than L ′ _1, there is no preceding vehicle between the host vehicle and the vehicle stop line, and in that case, the operation start condition of the safety device main body 2 is to stop at the vehicle stop line. The operation control of the safety device main body 2 is performed only for the operation start condition, that is, only for the stop to the vehicle stop line.

That is, when L ₁ is larger than L' ₁ , S20
In step S21, it is determined whether L' ₁ is less than L' _2. If V ₀ is greater than 0, it is determined in step S21 whether L' ₁ is less than L' _2. Issues an alarm in S22, and subsequently determines in S23 whether L' ₁ is smaller than L' _{0. If} it is not small, the process returns to S13. If it is small, the automatic braking is activated in S24 and the process returns to S13. . When it is determined in S20 that V ₀ is not greater than _0, that is, when the vehicle is stopped, it is determined in S25 whether the alarm and automatic braking are activated. If not, the brake lamp is turned off in S27. Then, the routine proceeds to return, and if they are operating, they are released at S26, the brake lamp is turned off at S27, and the routine proceeds to return.

If L ₁ is equal to or less than L ′ _{1 in} S19, there is a preceding vehicle between the host vehicle and the vehicle stop line. In that case, the safety device body 2 is set to the operation start condition to contact the preceding vehicle. The operation control of the safety device main body 2 is performed only for the avoidance target operation start condition, that is, only for avoiding contact with the preceding vehicle.

That is, when L ₁ is L' ₁ or less, it is judged in S28 whether V ₀ is larger than 0, and if it is larger than 0, S
At 29, it is determined whether L ₁ is smaller than L ₂ , and when it is not small, the procedure returns to S13. When it is small, an alarm is issued at S30, and then S31.
Determines whether L ₁ is smaller than L ₀ , and if not, S
Return to 13, and when it is small, activate automatic braking in S32 and execute S13.
Return to. When it is determined in S28 that V ₀ is not larger than _0, that is, when the vehicle is stopped, it is determined in S25 whether the alarm and automatic braking are activated. If not, the brake lamp is turned off in S27. Then, the routine proceeds to return, and if they are operating, they are released at S26, the brake lamp is turned off at S27, and the routine proceeds to return.

In the first and second embodiments, the change of the operation start condition of the safety device body 2 does not necessarily have to be changed based on both the acceleration / deceleration state and the vehicle speed operation state, but only the acceleration / deceleration state. It may be changed based on only the vehicle speed operation state. Further, in any case, it may be changed in consideration of other vehicle traveling states and the like. Further, as the vehicle speed operation state, not only whether the accelerator pedal or the brake pedal is depressed but also the operation state of the transmission, for example, can be adopted.

In the first and second embodiments described above, the safety device body 2 does not necessarily include the automatic braking device 2a and the alarm device 2b.
It is not necessary to configure with, and only one of the automatic braking device 2a or the alarm device 2b may be used, or another device for stopping at the vehicle stop position may be used, and further, those devices may be appropriately combined. It may be something.

In the first and second embodiments, the change of the operation starting condition of the safety device body 2 is performed by changing the automatic braking device 2a.
It is also possible to change the operation start conditions of the above, or to change the operation start conditions of both the automatic braking device 2a and the alarm device 2b. In short, it is only necessary to change the operation starting conditions of all or some of the constituent parts of the safety device body 2.

In the first and second embodiments, the detection of the vehicle stop position does not necessarily have to detect the distance to the vehicle stop position. For example, it is only necessary that the vehicle stop position exists at a predetermined front position. It may be detected. In this case, for example, the presence of the vehicle stop position at a predetermined front position is detected by a road marker or the like, and the safety device main body 2 is activated when a predetermined time has elapsed from the detection time or when the vehicle travels a predetermined distance. Configured to
In this case, the operation start condition, that is, the predetermined time or the predetermined distance traveling (which can be determined based on the own vehicle speed or the road surface μ) may be changed based on the acceleration / deceleration state or the vehicle speed operation state.

In the first and second embodiments, the vehicle stop position detecting means 4 is not limited to the road marker reading means as described above, but other various means, for example, a predetermined vehicle stop position on the traveling road surface. It can be configured by a receiving unit or the like that receives a radio wave having information indicating that the vehicle stop position is present at a predetermined position in front of the vehicle, which is transmitted from a transmitting unit provided in front of the distance, and distance information to the vehicle stop position. .

Further, in the second embodiment, the change of the operation starting condition is to stop the own vehicle at the vehicle stop position when the preceding vehicle is present at least between the own vehicle and the vehicle stop position. It is sufficient to change the operation start condition such that the operation start condition is set to zero and only the operation start condition for avoiding contact of the host vehicle with the preceding vehicle is changed. It can be done arbitrarily.

[Brief description of drawings]

FIG. 1 is a block diagram showing a first embodiment of a vehicle safety device according to the present invention.

FIG. 2 is a plan view showing a positional relationship between a vehicle stop position, a road marker, a host vehicle, and a front vehicle.

3 to 5 are flowcharts showing the operation procedure of the embodiment shown in FIG.

FIG. 6 is a diagram showing a correction classification map used when changing the operation start condition.

FIG. 7 is a diagram showing a correction amount graph used when changing the operation start condition.

FIG. 8 is a block diagram showing a second embodiment of the vehicle safety device according to the invention.

9 to 11 are flowcharts showing the operation procedure of the embodiment shown in FIG.

[Explanation of symbols]

 2 Safety device body 2a Automatic braking device 2b Alarm device 4 Vehicle stop position detection means 6 Vehicle distance detection means 8 Control means 10 Actuation start condition changing means 30 Vehicle stop position 32 Road marker 34 Own vehicle 36 Front vehicle

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tomohiko Adachi 3-1, Shinchi, Fuchu-cho, Aki-gun, Hiroshima Mazda Motor Corporation

Claims (5)

[Claims] 1. A safety device body for braking an own vehicle, a vehicle stop position detecting means for detecting a vehicle stop position, and the vehicle based on the detection of the vehicle stop position by the vehicle stop position detecting means. A safety device for a vehicle, comprising: a control means for activating the safety device main body so that the own vehicle can be stopped at a stop position, wherein the operation start condition of the safety device main body in the control means is an acceleration / deceleration of the own vehicle. A vehicle safety device comprising an operation start condition changing unit that changes according to a state. 2. A safety device body for braking the host vehicle, a vehicle stop position detecting means for detecting a vehicle stop position, and the vehicle based on the detection of the vehicle stop position by the vehicle stop position detecting means. A safety device for a vehicle, comprising: a control means for activating the safety device main body so that the host vehicle can be stopped at a stop position. The operation start condition of the safety device main body in the control means is set to a vehicle speed operation of a driver. A vehicle safety device comprising an operation start condition changing unit that changes according to a state. 3. A safety device main body for braking the own vehicle, a vehicle stop position detecting means for detecting a vehicle stop position, and the vehicle based on the detection of the vehicle stop position by the vehicle stop position detecting means. A safety device for a vehicle, comprising: a control means for activating the safety device main body so that the host vehicle can be stopped at a stop position. The operation start condition of the safety device main body in the control means is set to a vehicle speed operation of a driver. A vehicle safety device comprising: an operation start condition changing means for making a large change according to a state and a small change for each vehicle speed operation state according to an acceleration / deceleration state of the host vehicle. 4. The safety device main body comprises an automatic braking device for the vehicle and an alarm device that is activated before the automatic braking device starts operating, and the operation start condition changing means includes the alarm device. The vehicle safety device according to any one of claims 1 to 3, wherein the operation start condition is changed. 5. A safety device body for braking the own vehicle, a vehicle stop position detecting means for detecting a vehicle stop position, and a distance between the own vehicle and a preceding vehicle located in front of the own vehicle. Means for detecting the vehicle interval, and enabling the own vehicle to stop at the vehicle stop position based on the detection of the vehicle stop position and the distance between the own vehicle and the preceding vehicle, and the contact of the own vehicle with the preceding vehicle. A safety device for a vehicle, comprising: a control means for activating the safety device main body so as to avoid the above, wherein the operation start condition of the safety device main body in the control means is set between the own vehicle and the vehicle stop position. If there is a preceding vehicle in between, the operation starting condition for stopping the own vehicle at the vehicle stop position is eliminated and only the operation starting condition for avoiding the contact of the own vehicle with the preceding vehicle is set. Safety device for a vehicle, characterized in that it comprises an additional means.