Alarm system for vehicle
To provide an alarm system for a vehicle that can reduce alarms that can irritate a driver. An alarm system 1 for a vehicle includes an alarm line setting part 51 that sets a right alarm line 61 and a left alarm line 62 in front of a vehicle 2 , and an alarm unit control part 55 that activates a speaker 41 and a display 42 when the velocity of the vehicle 2 is equal to or less than a predetermined velocity and a collision determination part 53 determines that an object will cross the right alarm line 61 or the left alarm line 62 within a predetermined time. When the vehicle 2 is decelerating, the alarm unit control part 55 performs an alarm reduction control that suppresses operation of the speaker 41 compared with when the vehicle 2 is not decelerating.
1. An alarm system for a vehicle, comprising:
an alarm line setting part that sets an alarm line extending forward from the vehicle;
an object detection part that detects an object on a side of the vehicle;
a collision determination part that determines whether or not the object crosses the alarm line within a predetermined time; and
an alarm unit control part that activates an alarm unit when the collision determination part determines that the object crosses the alarm line within the predetermined time,
wherein the alarm unit control part performs an alarm reduction control to reduce operation of the alarm unit when the vehicle is decelerating compared with when the vehicle is not decelerating.
2. The alarm system for a vehicle according to claim 1 , wherein the alarm unit includes a first alarm device and a second alarm device;
the alarm unit control part activates the first alarm device and the second alarm device when the vehicle is not decelerating; and
the alarm unit control part does not activate the first alarm device but activates the second alarm device as the alarm reduction control when the vehicle is decelerating.
3. The alarm system for a vehicle according to claim 2 , wherein the first alarm device audibly raises an alarm; and
the second alarm device visually raises an alarm.
4. The alarm system for a vehicle according to claim 1 , wherein the alarm unit control part activates the alarm unit when a velocity of the vehicle is equal to or less than a predetermined velocity; and
the alarm unit control part does not perform the alarm reduction control when the vehicle starts after having decelerated from a velocity greater than the predetermined velocity and stopped.
5. The alarm system for a vehicle according to claim 2 , wherein the alarm unit control part activates the alarm unit when a velocity of the vehicle is equal to or less than a predetermined velocity; and
the alarm unit control part does not perform the alarm reduction control when the vehicle starts after having decelerated from a velocity greater than the predetermined velocity and stopped.
6. The alarm system for a vehicle according to claim 3 , wherein the alarm unit control part activates the alarm unit when a velocity of the vehicle is equal to or less than a predetermined velocity; and
the alarm unit control part does not perform the alarm reduction control when the vehicle starts after having decelerated from a velocity greater than the predetermined velocity and stopped.
7. The alarm system for a vehicle according to claim 1 , wherein the alarm unit control part performs the alarm reduction control when a deceleration of the vehicle becomes equal to or greater than a predetermined deceleration.
8. The alarm system for a vehicle according to claim 2 , wherein the alarm unit control part performs the alarm reduction control when a deceleration of the vehicle becomes equal to or greater than a predetermined deceleration.
9. The alarm system for a vehicle according to claim 3 , wherein the alarm unit control part performs the alarm reduction control when a deceleration of the vehicle becomes equal to or greater than a predetermined deceleration.
10. The alarm system for a vehicle according to claim 4 , wherein the alarm unit control part performs the alarm reduction control when a deceleration of the vehicle becomes equal to or greater than a predetermined deceleration.
11. The alarm system for a vehicle according to claim 1 , further comprising a traffic signal detection part that detects a traffic signal emitted by a traffic light in the direction of traveling of the vehicle,
wherein the alarm unit control part performs the alarm reduction control when the traffic light is emitting a stop signal.
12. The alarm system for a vehicle according to claim 2 , further comprising a traffic signal detection part that detects a traffic signal emitted by a traffic light in the direction of traveling of the vehicle,
wherein the alarm unit control part performs the alarm reduction control when the traffic light is emitting a stop signal.
13. The alarm system for a vehicle according to claim 3 , further comprising a traffic signal detection part that detects a traffic signal emitted by a traffic light in the direction of traveling of the vehicle,
wherein the alarm unit control part performs the alarm reduction control when the traffic light is emitting a stop signal.
14. The alarm system for a vehicle according to claim 4 , further comprising a traffic signal detection part that detects a traffic signal emitted by a traffic light in the direction of traveling of the vehicle,
wherein the alarm unit control part performs the alarm reduction control when the traffic light is emitting a stop signal.