KR200304180Y1 - Airbag ignition circuit - Google Patents

Airbag ignition circuit Download PDF

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Publication number
KR200304180Y1
KR200304180Y1 KR2019970040031U KR19970040031U KR200304180Y1 KR 200304180 Y1 KR200304180 Y1 KR 200304180Y1 KR 2019970040031 U KR2019970040031 U KR 2019970040031U KR 19970040031 U KR19970040031 U KR 19970040031U KR 200304180 Y1 KR200304180 Y1 KR 200304180Y1
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South Korea
Prior art keywords
sensor
airbag
transistor
buffer
ignition circuit
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KR2019970040031U
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Korean (ko)
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KR19990027440U (en
Inventor
양만영
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주식회사 현대오토넷
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Priority to KR2019970040031U priority Critical patent/KR200304180Y1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R2021/26029—Ignitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/30—Sensors
    • B60Y2400/304—Acceleration sensors
    • B60Y2400/3042—Collision sensors

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Air Bags (AREA)

Abstract

본 고안은 소형·저전류 용량의 충격센서의 사용이 가능한 에어백 점화회로에 관한 것으로,The present invention relates to an airbag ignition circuit capable of using a small, low current shock sensor,

에어백 점화기에 전원을 공급하는 전원부와, 차량에 가해지는 기계적인 충격을 감지하는 충격센서와, 차량이 받는 가속도를 감지하는 가속도 센서와, 상기 가속도 센서의 신호를 처리하는 마이크로 콘트롤러의 신호에 따라 온/오프 되는 제1 트랜지스터 및 제2 트랜지스터와, 상기 충격센서와 제1 트랜지스터 및 제2 트랜지스터가 모두 온된 경우 작동하여 에어백을 점화시키는 에어백 점화기에 있어서,The power supply unit supplies power to the airbag igniter, an impact sensor that senses mechanical shock applied to the vehicle, an acceleration sensor that senses acceleration received by the vehicle, and a signal of the microcontroller that processes the signal of the acceleration sensor. In an airbag igniter for igniting an airbag by operating when the first transistor and the second transistor to be turned on / off, and the impact sensor, the first transistor and the second transistor are all on,

상기 마이크로 콘트롤러(10)와 제1 및 제2 트랜지스터(TR1,TR2)사이에는 버퍼(60)가 구비되고, 상기 버퍼(60)에는 충격센서로서 저전류 충격센서(70)가 연결되는 것을 특징으로 한다.A buffer 60 is provided between the microcontroller 10 and the first and second transistors TR1 and TR2, and the low current shock sensor 70 is connected to the buffer 60 as a shock sensor. do.

이것에 의해, 회로의 소형화 및 경량화가 가능해진다.As a result, the circuit can be miniaturized and reduced in weight.

Description

에어백 점화회로 (CIRCUIT FOR IGNITION OF AIRBAG)CIRCUIT FOR IGNITION OF AIRBAG

본 고안은 에어백 점화회로에 관한 것으로, 보다 상세하게는 소형·저전류 용량의 충격센서의 사용이 가능한 에어백 점화회로에 관한 것이다.The present invention relates to an airbag ignition circuit, and more particularly, to an airbag ignition circuit capable of using a small and low current shock sensor.

종래의 경우를 도 1을 참조하여 설명하기로 한다.A conventional case will be described with reference to FIG. 1.

에어백 제어장치가 기계식에서 전자식으로 발전하면서, 가속도 측정용 전자센서와 충격 감지용 보조 안전센서인 기계식 충격센서를 필요로 하게 되었다. 상기 센서중에서 기계식 충격센서는 전자식 가속도 센서의 최대 약점인 전자 노이즈에 의한 오작동을 보완하고자 보조 안전 센서로 작용한다.The development of airbag controls from mechanical to electronic has led to the need for electronic sensors for acceleration measurement and mechanical shock sensors, auxiliary safety sensors for shock detection. Among the sensors, the mechanical shock sensor acts as an auxiliary safety sensor to compensate for malfunction caused by electronic noise, which is the weakest point of the electronic acceleration sensor.

종래의 에어백 점화회로는 에어백 점화기(50)에 전원을 공급하는 전원부(40)와, 차량에 가해지는 기계적인 충격을 감지하는 고전류 충격센서(30)와, 차량이 받는 가속도를 감지하는 가속도 센서(20)와, 상기 가속도 센서(20)의 신호를 처리하는 마이크로 콘트롤러(10)의 신호에 따라 온/오프 되는 제1 트랜지스터(TR1) 및 제2 트랜지스터(TR2)와, 상기 고전류 충격센서(30)와 제1 트랜지스터(TR1) 및 제2 트랜지스터(TR2)가 모두 온된 경우 작동하여 에어백을 점화시키는 에어백 점화기(50)로 구성된다.The conventional airbag ignition circuit includes a power supply unit 40 for supplying power to the airbag igniter 50, a high current shock sensor 30 for detecting a mechanical shock applied to the vehicle, and an acceleration sensor for sensing acceleration received by the vehicle ( 20, a first transistor TR1 and a second transistor TR2 that are turned on / off according to a signal of the microcontroller 10 that processes the signal of the acceleration sensor 20, and the high current shock sensor 30. And an airbag igniter 50 that operates when both the first transistor TR1 and the second transistor TR2 are turned on to ignite the airbag.

그런데, 이와 같이 구성된 종래의 에어백 점화회로의 고전류 충격센서(30)는 에어백을 점화하기 위하여 고전류가 흐르는 경로상에 직렬로 연결되어 상당히 큰 전류용량을 필요로 하고 이에 따라 그 부피 또한 증가하는 문제점이 유발되었다.However, the high current shock sensor 30 of the conventional airbag ignition circuit configured as described above is connected in series on a path through which a high current flows in order to ignite the airbag, which requires a very large current capacity, and thus the volume thereof also increases. Triggered.

따라서, 본 고안은 상술한 종래의 문제점을 극복하기 위한 것으로서, 본 고안의 목적은 에어백 점화회로를 제공하는데 있다.Accordingly, the present invention is to overcome the above-mentioned conventional problems, and an object of the present invention is to provide an airbag ignition circuit.

상기 본 고안의 목적을 달성하기 위한 에어백 점화회로의 일예로서, 본 고안은As an example of an airbag ignition circuit for achieving the object of the present invention, the present invention

에어백 점화기에 전원을 공급하는 전원부와, 차량에 가해지는 기계적인 충격을 감지하는 충격센서와, 차량이 받는 가속도를 감지하는 가속도 센서와, 상기 가속도 센서의 신호를 처리하는 마이크로 콘트롤러의 신호에 따라 온/오프 되는 제1 트랜지스터 및 제2 트랜지스터와, 상기 충격센서와 제1 트랜지스터 및 제2 트랜지스터가 모두 온된 경우 작동하여 에어백을 점화시키는 에어백 점화기에 있어서,The power supply unit supplies power to the airbag igniter, an impact sensor that senses mechanical shock applied to the vehicle, an acceleration sensor that senses acceleration received by the vehicle, and a signal of the microcontroller that processes the signal of the acceleration sensor. In an airbag igniter for igniting an airbag by operating when the first transistor and the second transistor to be turned on / off, and the impact sensor, the first transistor and the second transistor are all on,

상기 마이크로 콘트롤러와 제1 및 제2 트랜지스터 사이에는 버퍼가 구비되고, 상기 버퍼에는 충격센서로서 저전류 충격센서가 연결되는 것을 특징으로 한다.A buffer is provided between the microcontroller and the first and second transistors, and a low current shock sensor is connected to the buffer as a shock sensor.

이러한 구성에 의해, 회로의 소형화 및 경량화가 가능해진다.This configuration makes it possible to reduce the size and weight of the circuit.

도 1은 종래의 에어백 점화회로를 도시한 구성도1 is a block diagram showing a conventional airbag ignition circuit

도 2는 본 고안에 따른 에어백 점화회로를 도시한 구성도2 is a block diagram showing an airbag ignition circuit according to the present invention

〈도면의 주요 부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>

10 : 마이컴 콘트롤러 20 : 가속도 센서10: microcomputer controller 20: acceleration sensor

30 : 고전류 충격센서 40 : 전원부30: high current shock sensor 40: power supply

50 : 에어백 점화장치 60 : 버퍼50: airbag ignition device 60: buffer

70 : 저전류 충격센서 TR : 트랜지스터70: low current shock sensor TR: transistor

이하, 본 고안의 실시예를 첨부도면을 참조하여 상세히 설명하기로 한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2를 참조하면, 본 고안에 따른 에어백 점화회로는 종래의 점화회로와 동일한 구성요소로서 에어백 점화기(50)에 전원을 공급하는 전원부(40)와, 차량에 가해지는 기계적인 충격을 감지하는 충격센서(30)와, 차량이 받는 가속도를 감지하는 가속도 센서(20)와, 상기 가속도 센서(20)의 신호를 처리하는 마이크로 콘트롤러(10)의 신호에 따라 온/오프 되는 제1 트랜지스터(TR1) 및 제2 트랜지스터(TR2)와, 상기 충격센서(30)와 제1 트랜지스터(TR1) 및 제2 트랜지스터(TR2)가 모두 온된 경우 작동하여 에어백을 점화시키는 에어백 점화기(50)를 포함한다.Referring to Figure 2, the airbag ignition circuit according to the present invention is the same component as the conventional ignition circuit power supply unit 40 for supplying power to the airbag igniter 50, the impact of detecting mechanical shock applied to the vehicle The first transistor TR1 turned on / off according to the sensor 30, the acceleration sensor 20 for sensing the acceleration received by the vehicle, and the signal of the microcontroller 10 processing the signal of the acceleration sensor 20. And an airbag igniter 50 that operates when the second transistor TR2 and the impact sensor 30, the first transistor TR1, and the second transistor TR2 are turned on to ignite the airbag.

또한, 상기 마이크로 콘트롤러(10)와 제1 및 제2 트랜지스터(TR1,TR2)사이에는 버퍼(60)가 구비되고, 상기 버퍼(60)에는 충격센서로서 저전류 충격센서(70)가 연결된다. 본 고안의 충격센서는 고전류가 흐르지 않도록 버퍼(60)에 연결되므로, 많은 전류가 흐를 필요가 없게 되어 저전류 용량이고 비교적 작은 부피의 저전류 충격센서(70)가 사용된다.In addition, a buffer 60 is provided between the microcontroller 10 and the first and second transistors TR1 and TR2, and the low current shock sensor 70 is connected to the buffer 60 as a shock sensor. Since the impact sensor of the present invention is connected to the buffer 60 so that a high current does not flow, a large amount of current does not need to flow, and a low current shock sensor 70 having a low current capacity and a relatively small volume is used.

상기와 같은 구성에 의해, 본 고안의 에어백 점화회로는 다음과 같이 작동한다.By the above configuration, the airbag ignition circuit of the present invention operates as follows.

충돌사고 등으로 차랑이 급속히 감속되면, 가속도 센서(20)는 이를 감지하여 마이크로 콘트롤러(10)에 전달된 후 버퍼(60)에 도달한다. 이 때 저전류 충격센서(70) 또한 기계적 충격을 감지하여 온 상태로 되면, 버퍼(60)는 상기 마이크로 콘트롤러(10)의 신호와 저전류 충격센서(70)의 신호에 따라 연결된 제1 및 제2 트랜지스터(TR1,TR2)를 온 시킨다. 전원부(40)의 전류는 상기 제1 및 제2 트랜지스터(TR1,TR2)를 통과하여 에어백 점화기(50)를 점화시키고, 최종적으로는 에어백이 작동된다.When the lane is rapidly decelerated due to a collision accident, the acceleration sensor 20 detects this and transmits it to the microcontroller 10 to reach the buffer 60. At this time, when the low current shock sensor 70 is also turned on by detecting a mechanical shock, the buffer 60 is connected to the first and the second signals according to the signal of the microcontroller 10 and the signal of the low current shock sensor 70. Turn on the two transistors TR1 and TR2. The current of the power supply unit 40 passes through the first and second transistors TR1 and TR2 to ignite the airbag igniter 50, and finally the airbag is operated.

전자 노이즈에 의해 가속도 센서(20)가 오작동한 경우에는 저전류 충격센서(70)가 온 상태로 되지 않으므로, 버퍼(60)는 제1 및 제2 트랜지스터(TR1,TR2)를 오프 상태로 유지하여 에어백 점화기(50)로의 통전을 차단한다.When the acceleration sensor 20 malfunctions due to electromagnetic noise, the low current shock sensor 70 does not turn on, so the buffer 60 keeps the first and second transistors TR1 and TR2 off. Shut off energization to the airbag igniter 50.

상술한 바와 같이, 본 고안에 따른 에어백 점화회로에는 버퍼가 구비되어 저전류 용량의 충격센서의 사용이 가능하므로, 충격센서의 소형화, 경량화 및 원가 절감의 효과가 제공된다.As described above, the airbag ignition circuit according to the present invention is provided with a buffer to enable the use of a shock sensor having a low current capacity, thereby providing an effect of miniaturization, light weight, and cost reduction of the impact sensor.

이상에서 설명한 것은 본 고안에 따른 에어백 점화회로를 실시하기 위한 하나의 실시예에 불과한 것으로서, 본 고안은 상기한 실시예에 한정되지 않고, 이하의 실용신안등록청구의 범위에서 청구하는 본 고안의 요지를 벗어남이 없이 당해 고안이 속하는 분야에서 통상의 지식을 가진자라면 누구든지 다양한 변경 실시가 가능할 것이다.What has been described above is just one embodiment for implementing the airbag ignition circuit according to the present invention, the present invention is not limited to the above embodiment, the subject matter of the present invention claimed in the following utility model registration claims Any person having ordinary knowledge in the field to which the present invention pertains may make various changes without departing from the scope of the present invention.

Claims (1)

에어백 점화기에 전원을 공급하는 전원부와, 차량에 가해지는 기계적인 충격을 감지하는 충격센서와, 차량이 받는 가속도를 감지하는 가속도 센서와, 상기 가속도 센서의 신호를 처리하는 마이크로 콘트롤러의 신호에 따라 온/오프 되는 제1 트랜지스터 및 제2 트랜지스터와, 상기 충격센서와 제1 트랜지스터 및 제2 트랜지스터가 모두 온된 경우 작동하여 에어백을 점화시키는 에어백 점화기에 있어서,The power supply unit supplies power to the airbag igniter, an impact sensor that senses mechanical shock applied to the vehicle, an acceleration sensor that senses acceleration received by the vehicle, and a signal of the microcontroller that processes the signal of the acceleration sensor. In an airbag igniter for igniting an airbag by operating when the first transistor and the second transistor to be turned on / off, and the impact sensor, the first transistor and the second transistor are all on, 상기 마이크로 콘트롤러(10)와 제1 및 제2 트랜지스터(TR1,TR2)사이에는 버퍼(60)가 구비되고, 상기 버퍼(60)에는 충격센서로서 저전류 충격센서(70)가 연결되는 것을 특징으로 하는 에어백 점화회로.A buffer 60 is provided between the microcontroller 10 and the first and second transistors TR1 and TR2, and the low current shock sensor 70 is connected to the buffer 60 as a shock sensor. Airbag ignition circuit.
KR2019970040031U 1997-12-23 1997-12-23 Airbag ignition circuit KR200304180Y1 (en)

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Application Number Priority Date Filing Date Title
KR2019970040031U KR200304180Y1 (en) 1997-12-23 1997-12-23 Airbag ignition circuit

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Application Number Priority Date Filing Date Title
KR2019970040031U KR200304180Y1 (en) 1997-12-23 1997-12-23 Airbag ignition circuit

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KR19990027440U KR19990027440U (en) 1999-07-15
KR200304180Y1 true KR200304180Y1 (en) 2003-04-18

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