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Transcript of MEMS Sensors for automotive safety - SEMI.ORG › eu › sites › semi.org › files ›...
Marc OSAJDA, NXP Semiconductors
MEMS Sensors for automotive safety
AGENDA
An incredible opportunity
Vehicle Architecture (r)evolution
MEMS & Sensors in automotive applications
Connectivity Autonomy Electrification
Safe and Secure MobilitySEMICONDUCTOR CONTENT GROWS 3X
Global Mega Trends
An incredible Opportunity
+50$ Cellular 4/5G
+50$ e-Cockpit
+100$ Level 2
+400$ Level 3
+700$ Level 4 & 5
+350$ Hybrid
+700$ Full Electric
MILLION1.3
90% are caused by
HUMAN ERROR
OUT OF ALL ACCIDENTS GLOBALLY,
35km/h
50km/h
70km/h
HIT BY A VEHICLE
TRAVELING AT:
HIT BY A VEHICLE
TRAVELING AT:
HIT BY A VEHICLE
TRAVELING AT:
9 OUT OF 10 PEDESTRIANS SURVIVE*
5 OUT OF 10 PEDESTRIANS SURVIVE
ONLY 1 OUT OF 10 PEDESTRIANS SURVIVES
Source: Seattle’s Vision Zero Plan/Documents/Departments/beSuperSafe/VisionZeroPlan, ASIRT.ORG
Road traffic deaths occur every year
ENABLING SELF-DRIVING CARSBetter senses than the human driver.
Automation of driving decisions.
SENSE
THINK
ACT
The press is full of talk about
biggest brains, what about
best-in-class sensors?
Autonomous driving WITHOUT sensors
IS LIKE DRIVING BLINDFOLDED
The future of the industry
hinges on being able to
sense the environment in
an artefact-free way
This activates the right speed,
the right traction and the right
acceleration & movement for
every situation
What is Driving the Sensor Demand Today?
Level 1-2Sensors are added to the
vehicle to aid the driver:
Accelerometers, gyro, front
radar, blind spot, rear, front &
surround view cameras
Level 3-5Automated driving system performs
the entire dynamic driving task –
this requires fail operational safety.
Sensors help the vehicle learn
from the environment to drive
safely: Sensor fusion, distance
measurement, road sign
recognition, route planning and
mapping, precise positioning,
critical arbitration
MEMS Inertial Sensors help the
vehicle control its autonomous
trajectory and state of critical
elements such as the tires
(intelligent tires)
4 50 2 31
No
Automation
Full
Automation
High
Automation
Conditional
Automation
Partial
Automation
Driver
Assistance
AUTOMATED DRIVING SYSTEM
MONITORS DRIVING
ENVIRONMENT & INERTIAL
SENSOR THE VEHICLE
TRAJECTORY
HUMAN DRIVER MONITORS
DRIVING ENVIRONMENT.
SOME SENSORS CONTROL THE
VEHICULE TRAJECTORY
Bo
dy &
Com
fort
In-V
ehic
le
Experie
nce
Con
ne
ctivity
Dri
ve
r
Rep
lace
me
nt
Po
we
rtra
in &
Ve
hic
le
Dyn
am
ics
V2X
Broadcast Radio
Cellular
NFC
Smart Car Access
Radar
Camera
Lidar
Motion & Pressure
Speed
Ultrasonic
Smart Light
Access, Door Control
eCockpit
Amplifiers
Powertrain &
Vehicle DynamicsEngine
Transmission
Brake
Battery Cell Management
Steering
Airbag
Suspension
Infotainment
Fusion
WiFi, BT, GNSS,
TPMS
Powertrain
Domain
Controller
Connectivity
Domain
Controller
Body
Domain
Controller Motion
SENSE THINK ACT
NXP LEADS DOMAIN BASED
VEHICLE ARCHITECTURES
COMPLETE
SOLUTIONS FASTER TIME TO MARKET
FULL SCALABILITY
Connectivity
Driver Replacement
Powertrain & Vehicle Dynamics
Body & Comfort
In-Vehicle Experience
MEMS Experience
30+ years of Automotive
MEMS production4 billion devices shipped
1.5 billion in automotive applications
Broad product portfolioAccelerometer, Gyroscopes, Motion sensors
Magnetic speed and angular sensor
Absolute and differential pressure sensors
Tire Pressure Sensors
6th generation of Airbag Sensors
4th generation of Tire Pressure Sensors
MEMS Sensors in Automotive Applications Even Level 5 driving won’t be 100%
accident free – so passive safety will continue to be standard
equipment
Level 5 vehicles can still skid and drift
on slippery roads – electronic stability control will continue to be a
standard feature, the vehicle will also still need
feedback loop to control steering and braking
Level 5 vehicles will still need to know
the status of each critical component: monitoring of tire condition for example
Sophisticated RADAR & LIDAR will need high accuracy beam orientation &
stabilization when driving
Tire Monitoring
sensors
airbag
pressure satellite
Pedestrian protection
PSAT and/or low-g
Electric par brake
hill start control
angle measurement
Airbag sensors
Airbag Inertial
satellite sensor
Roll over
detection
Electronic Stability
Control sensors
In dash navigation
dead reckoning
Car alarm
motion detection
Vehicle movement
tracking unit 6DOF
Radar beam
orientation &
stabilization
Active Safety / Passive Safety / In vehicle experience / Security
Keyfob motion
detection
Security feature
Pressure Sensor Automotive Application Domains
Tire Pressure
Monitoring
Pedestrian Protection
Internal
Combustion
Engine
Side Crash Detection
>300 million pressure sensors for auto applications shipped
Why Tire Pressure Monitoring
Safety for everyone• TPMS Prevent roadside breakdown and risk of road congestion
• US tread act to prevent roll over accidents
• Regulation around the world (including China)
Cleaner world for everyone• TPMS allows optimum tire inflation and thus fuel
consumption and CO2 emission reduction
• Maximizes tire life
Intelligent tires:
A potential to be exploited• Necessary building block for automated driving
• Link tire information with chassis and ADAS system
• Provides accurate tire data to the driver
• Filling assistant app on smartphones
• Fleets & Truck: enables better tire management
Motion Sensor Automotive Application Domain
Inertial Satellite
Sensors
Airbag Sensors
Rollover ECU
Keyfob Security
Motion Detection1.2 Billion airbag MEMS sensors shipped
Major Tier-1’s using NXP motion sensors
Thief 1
Thief 2
Radio
Bridge
Motion Sensor in Key
Increasing Security and Battery Life in Keyless Entry
Drive-way attack
Passive Keyless Entry• Automatically unlocks the car when key in close vicinity
• Radio-bridge (thief) can makes car believe that key is in
close vicinity and car can be unlocked
Benefit of using a MEMS motion Sensor• When key if not in motion (at home) LF/RF interfaces can be disabled:
Relay attack impossible
• Reduce power consumption when key is not in use (deep sleep mode)
• Key is waking up when the sensor detects a movement
Conclusion
Entering new era of automated driving that requires
functional safety and security
The challenge is not only to master the brain of the car, but to
capture the environment around it
Need to have absolute certainty about the physical state of the car
NXP and the NXP logo are trademarks of NXP B.V. All other product or service names are the property of their respective owners. © 2017 NXP B.V.