KR19990002448A - Passenger Airbag System Using Ultrasonic Sensor - Google Patents

Abstract

The present invention relates to a passenger seat airbag system using an ultrasonic sensor that detects and alerts an intruder who has intruded into a vehicle without deploying a passenger seat airbag if a passenger does not board the passenger seat using an ultrasonic sensor.

The passenger seat airbag system using the ultrasonic sensor includes an ultrasonic sensor 19 mounted on a passenger seat front roof panel, an ignition switch 21 for turning the vehicle on and off, and a collision sensor for detecting the vehicle's movement. 31, an ECU 11 for receiving a signal from the ultrasonic sensor 19, the ignition switch 21 and the collision sensor 31 to control the operation of the system, and the power unit 13 of the ECU 11 And a battery 29 for supplying power to the auxiliary power unit 15, a passenger seat airbag device 23 whose operation is controlled by the ECU 11, a buzzer 25 for emitting a warning sound, and an intruder alarm function. It is characterized by consisting of a wireless regulator 27 to turn on / off.

As a result, when a passenger does not ride in the passenger seat, there is an effect of detecting an unauthorized intrusion and alarming without deploying the passenger seat airbag.

Description

Passenger Airbag System Using Ultrasonic Sensor

The present invention relates to a passenger seat airbag system using an ultrasonic sensor, and more particularly, an ultrasonic sensor using an ultrasonic sensor to detect and alert an intruder who has intruded into a vehicle without deploying the passenger seat airbag if a passenger does not board the passenger seat. It relates to a passenger airbag system using.

1 is a block diagram illustrating a conventional passenger airbag system. The conventional passenger airbag system includes a battery 1 having a power supply voltage and a current supply of the battery 1. Safety sensor 2 for controlling the engine, an acceleration sensor 7 for measuring the acceleration of the vehicle, an ECU 6 for controlling the entire circuit of the airbag system, and actuated according to the command of the ECU 6 It consists of a first electric switch 3 and a second electric switch 4, and an inflator 5 connected to the switches 3 and 4 and operating the airbag module.

The safety sensor 2 for the airbag makes the ECU 6 recognize the collision by the acceleration sensor 7 at the time of the vehicle collision, and the ECU turns on the electrical switch, so that a high current flows in the inflator 5. . At this time, the current is designed to pass through the safety sensor, so that the current cannot flow unless the contact of the reed switch of the safety sensor is closed. However, since the safety sensor is not operated by an electrical signal but only by a mechanical impact amount, it must be designed to prevent the opening of the airbag in any case in a non-collision situation.

The safety sensor detects the amount of impact in a car crash and closes the switch to create a path through which the airbag ignition current can flow into the inflator.In general, the airbag ECU malfunctions due to electromagnetic interference and recognizes it as a collision situation. The safety sensor, which operates only by mechanical shock, not by electrical signals, even when giving an ignition command, prevents the flow of ignition current and prevents the deployment of airbags in non-collision situations.

However, the conventional passenger seat airbag system configured as described above has a problem in that the airbag is deployed even when a passenger does not ride in the passenger seat when the vehicle crashes.

Therefore, the present invention is to overcome the above-mentioned conventional problems, an object of the present invention is to detect an intruder who has intruded into the vehicle without deploying the passenger seat airbag if the passenger does not board the passenger seat using the ultrasonic sensor To provide a passenger seat airbag system using an ultrasonic sensor for alarming.

As an example of a passenger seat airbag system using an ultrasonic sensor for achieving the object of the present invention, an ultrasonic sensor mounted on the front passenger seat roof panel in the vehicle interior, an ignition switch for turning on / off the vehicle, and starting the vehicle A collision sensor for sensing, an ECU that receives signals from the ultrasonic sensor, an ignition switch, and a collision sensor to control the operation of the system, a battery for supplying power to the power unit and the auxiliary power unit of the ECU, and operated by the ECU A passenger seat airbag system using an ultrasonic sensor, comprising: a controlled passenger seat airbag device, a buzzer that emits a warning sound, and a wireless regulator that turns on / off an intruder alarm function.

By such a configuration, when a passenger does not board the passenger seat, the passenger seat air bag is not deployed, and an intrusion is detected and alarmed.

1 is a block diagram showing a conventional passenger airbag system

Figure 2 is a block diagram showing a passenger seat airbag system using an ultrasonic sensor according to the present invention

<Explanation of symbols for main parts of drawing>

1: battery 2: safety sensor

3: first electrical switch 4: second electrical switch

5: Inflator 6: ECU

7: acceleration sensor 11: ECU

13 power unit 15 auxiliary power unit

17: receiver 19: ultrasonic sensor

21: ignition switch 23: passenger seat airbag device

25: buzzer 27: wireless regulator

Hereinafter, an embodiment of the present invention will be described in detail with reference to Figure 2, Figure 2 is a block diagram showing a passenger seat airbag system using an ultrasonic sensor according to the present invention, the passenger seat airbag system using an ultrasonic sensor according to the present invention Ultrasonic sensor 19 mounted on the front passenger's front roof panel in the vehicle interior, ignition switch 21 for turning on / off the vehicle, collision sensor 31 for sensing the vehicle's movement, and the ultrasonic sensor 19 ), An ignition switch 21 and a collision sensor 31 receives a signal from the ECU 11 for controlling the operation of the system, and the power supply unit 13 and the auxiliary power unit 15 of the ECU 11 A battery 29 for supplying a battery, a passenger seat airbag device 23 whose operation is controlled by the ECU 11, a buzzer 25 for emitting a warning sound, and a wireless regulator 27 for turning on / off an intruder alarm function. It consists of.

With the above configuration, the passenger-side airbag system using the ultrasonic sensor of the present invention operates as follows.

When the ignition switch 11 is turned on, the ECU 11 operates the ultrasonic sensor 19 to monitor the passenger presence in the passenger seat. If no passenger is in the passenger seat, then the airbag of the passenger seat airbag device 23 is not deployed even if a signal is input from the collision sensor 31.

When the airbag is to be deployed, the auxiliary power unit 15 of the ECU 11 outputs the power unit 13 when the vehicle 13 is damaged during a vehicle crash, thereby deploying the airbag.

Intruder alarm function, when the user turns on the radio controller 27, when the ON signal is detected by the receiver 17 of the ECU 11, the ECU 11 operates the ultrasonic sensor 19 to control the movement inside the vehicle. Detect periodically. At this time, the ECU 11 compares the standard value input in advance with the input value input by the ultrasonic sensor 19 and operates the buzzer 27 when there is a large difference.

As described above, the passenger seat airbag system using the ultrasonic sensor according to the present invention has an effect of detecting an unauthorized intrusion without alarming the passenger seat airbag when the passenger seat is not in the passenger seat.

What has been described above is only one embodiment for implementing the passenger seat airbag system using the ultrasonic sensor according to the present invention, the present invention is not limited to the above-described embodiment, the invention claimed in the following claims Various changes can be made by those skilled in the art without departing from the gist of the present invention.

Claims (1)

Ultrasonic sensor 19 mounted on the front passenger's front roof panel in the vehicle interior, ignition switch 21 for turning on / off the vehicle, collision sensor 31 for sensing the vehicle's movement, and the ultrasonic sensor 19 ), An ignition switch 21 and a collision sensor 31 receives a signal from the ECU 11 for controlling the operation of the system, and the power supply unit 13 and the auxiliary power unit 15 of the ECU 11 A battery 29 for supplying a battery, a passenger seat airbag device 23 whose operation is controlled by the ECU 11, a buzzer 25 for emitting a warning sound, and a wireless regulator 27 for turning on / off an intruder alarm function. A passenger seat airbag system using an ultrasonic sensor, characterized in that consisting of.