乘员约束系统开发方法-朱西产
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Vehicle Front Structure (including bumpers) 车体结构设计
Effects Sensing Performance and Occupant Protection
I/P Support Structure 仪表盘的支撑结构 Instrument Panel 仪表盘 Steering Column and Steering Wheel 方向杆和方向盘 Seats and Floorpan Support Structure 座椅和脚踏板的支撑结构 Seat Belts 安全带 Air Bags 安全气囊 Windshield 挡风玻璃 Vehicle Electrical Systems 车辆电路系统
Electrical Inputs also Involved 电子系统对乘客保护系统的控制
SDM / ECU 电子控制器件
Monitor System Readiness 监控系统状态 Crash Decisions 决定是否启动乘客保护系统 Crash Recording 纪录碰撞过程数据
Real Occupant Crash Velocity 现实中的乘客碰撞速度
60
Sensing Time 传感器检测到信号 Seat Belt Acting 安全带发生作用
50
Seat Belt & Airbag Acting 安
全带及安全气囊同时发生作用
40
Velocity (Kph)
30
Perfect Occupant 理想曲线
Compression (mm)
Res Acc. 3ms (g)
Steering Column Rearward (mm)
Knee & Femur
Crash Basics 车辆碰撞的基本知识
Impact Velocity
车内空间
Interior Room
+ Vehicle Crush
车辆变形产生的空间
Available Restraint Distance
可利用的乘客约束空间
Available Restraint Distance可利用的乘客约束空间
HIC (36ms)
Head Res 3ms (g)
Steering Column Upward (mm)
Neck
Neck Shear (kN)
@ 0ms @ 25~35ms
@ 45ms
@ 0ms
Neck Tension (kN)
@ 35ms
@ 60ms
Neck Extension (Nm)
Chest
Action Reaction Direct AB Reaction Direct S/B Reaction Indirect
Floorpan Floorpan
Hidden Buckle Mounting
Occupant Protection Systems 乘客保护系统
Multiple Mechanical Elements Affect Performance 影响功能的诸多部件
unless it experiences a net external force.
Baidu Nhomakorabea
Crash Basics 车辆碰撞的基本知识
Probability of Injury is Related to Deceleration
乘客受伤的可能 性取决于减速度
Increasing the Time or Distance Over Which Deceleration Takes Place Will Reduce the Probability of Injury 增加减速过程的时间或者距离可以减少乘客受伤的可能性
Front Crash Impact Sensors 车辆正面碰撞传感器 Side Crash Impact Sensors车辆侧面碰撞传感器 Seat Belt use 安全带的使用 Seat Position 座椅的位置 Occupant Presence 座椅上是否有乘客 Occupant Weight 乘客的体重
Velocity (Kph)
60
车辆先于乘客达到静止状态
50
Vehicle comes to rest prior to the occupant
40
Vehicle deceleration is
30
greater than the occupant
20
车辆的减速度大于乘客
10
0
-50
0
50
100
Time (ms)
Test Configurations:
T1
T2
Restraint System
Pretensioner with load limiter 3.5KN
No pretensioner with load limiter 2.5KN
Injury Assesment Criteria
Points
Head
20
Real Occupant 现实曲线
10
0
-50
0
50
100
Maximum
Slope
(Acceleration)
Time (ms) is Higher Than
Ideal
现实曲线的最大斜率大于
理想曲线
Interior Interaction in a Crash 碰撞过程中乘客与车辆内部的接触
车辆变形产 有效乘客
生的空间
约束空间
车内空间
Interior Large Car 30
大型轿车
Crush 95
Restraint Distance 125 cm
Small Car 22
55
77 cm
小型轿车
Van
面包车
25
65
90 cm
Truck
卡车
25
80
105 cm
Perfect Occupant Crash Velocity 乘客的理想碰撞速度
乘员约束系统开发方法
• 碰撞传感系统的构成、原理及算法 •约束系统的构成及定义 •安全气囊标准 •约束系统开发流程 •为安全气囊的诉讼做好准备
同济大学 朱西产
Newton’s First Law 牛顿第一运动定律
An object at rest remains at rest, and an object in motion continues in motion with constant velocity
Effects Sensing Performance and Occupant Protection
I/P Support Structure 仪表盘的支撑结构 Instrument Panel 仪表盘 Steering Column and Steering Wheel 方向杆和方向盘 Seats and Floorpan Support Structure 座椅和脚踏板的支撑结构 Seat Belts 安全带 Air Bags 安全气囊 Windshield 挡风玻璃 Vehicle Electrical Systems 车辆电路系统
Electrical Inputs also Involved 电子系统对乘客保护系统的控制
SDM / ECU 电子控制器件
Monitor System Readiness 监控系统状态 Crash Decisions 决定是否启动乘客保护系统 Crash Recording 纪录碰撞过程数据
Real Occupant Crash Velocity 现实中的乘客碰撞速度
60
Sensing Time 传感器检测到信号 Seat Belt Acting 安全带发生作用
50
Seat Belt & Airbag Acting 安
全带及安全气囊同时发生作用
40
Velocity (Kph)
30
Perfect Occupant 理想曲线
Compression (mm)
Res Acc. 3ms (g)
Steering Column Rearward (mm)
Knee & Femur
Crash Basics 车辆碰撞的基本知识
Impact Velocity
车内空间
Interior Room
+ Vehicle Crush
车辆变形产生的空间
Available Restraint Distance
可利用的乘客约束空间
Available Restraint Distance可利用的乘客约束空间
HIC (36ms)
Head Res 3ms (g)
Steering Column Upward (mm)
Neck
Neck Shear (kN)
@ 0ms @ 25~35ms
@ 45ms
@ 0ms
Neck Tension (kN)
@ 35ms
@ 60ms
Neck Extension (Nm)
Chest
Action Reaction Direct AB Reaction Direct S/B Reaction Indirect
Floorpan Floorpan
Hidden Buckle Mounting
Occupant Protection Systems 乘客保护系统
Multiple Mechanical Elements Affect Performance 影响功能的诸多部件
unless it experiences a net external force.
Baidu Nhomakorabea
Crash Basics 车辆碰撞的基本知识
Probability of Injury is Related to Deceleration
乘客受伤的可能 性取决于减速度
Increasing the Time or Distance Over Which Deceleration Takes Place Will Reduce the Probability of Injury 增加减速过程的时间或者距离可以减少乘客受伤的可能性
Front Crash Impact Sensors 车辆正面碰撞传感器 Side Crash Impact Sensors车辆侧面碰撞传感器 Seat Belt use 安全带的使用 Seat Position 座椅的位置 Occupant Presence 座椅上是否有乘客 Occupant Weight 乘客的体重
Velocity (Kph)
60
车辆先于乘客达到静止状态
50
Vehicle comes to rest prior to the occupant
40
Vehicle deceleration is
30
greater than the occupant
20
车辆的减速度大于乘客
10
0
-50
0
50
100
Time (ms)
Test Configurations:
T1
T2
Restraint System
Pretensioner with load limiter 3.5KN
No pretensioner with load limiter 2.5KN
Injury Assesment Criteria
Points
Head
20
Real Occupant 现实曲线
10
0
-50
0
50
100
Maximum
Slope
(Acceleration)
Time (ms) is Higher Than
Ideal
现实曲线的最大斜率大于
理想曲线
Interior Interaction in a Crash 碰撞过程中乘客与车辆内部的接触
车辆变形产 有效乘客
生的空间
约束空间
车内空间
Interior Large Car 30
大型轿车
Crush 95
Restraint Distance 125 cm
Small Car 22
55
77 cm
小型轿车
Van
面包车
25
65
90 cm
Truck
卡车
25
80
105 cm
Perfect Occupant Crash Velocity 乘客的理想碰撞速度
乘员约束系统开发方法
• 碰撞传感系统的构成、原理及算法 •约束系统的构成及定义 •安全气囊标准 •约束系统开发流程 •为安全气囊的诉讼做好准备
同济大学 朱西产
Newton’s First Law 牛顿第一运动定律
An object at rest remains at rest, and an object in motion continues in motion with constant velocity