anything anywhere - Cambridge Wireless · Ultra Wide Band, Impulse Radios The DW1000 uses an...
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Slide 1 - DecaWave Limited - UWB technology to locate anything … anywhere Because location matters …
Transcript of anything anywhere - Cambridge Wireless · Ultra Wide Band, Impulse Radios The DW1000 uses an...
Slide 1 - DecaWave Limited -
UWB technology to locate
anything …
anywhere
Because location matters …
Slide 2 - DecaWave Limited -
Location SIG Event, 25th January 2017
“What do users and applications really
need for ubiquitous positioning ?”
Geovation Hub, London
Adrian Ward, Decawave Ltd
Slide 3 - DecaWave Limited -
Who we are …
A Dublin-based fabless semiconductor
company specialising in the design of
single-chip UWB transceivers
Offices in Dublin, San Francisco, Seoul.
50 employees, 35 engineers with a strong
background in:
Automotive, Consumer, Industrial & Mobile
Slide 4 - DecaWave Limited -
The increasing value of “Sensing the WHERE”…
Being connected is not sufficient … “Things” also need to be accurately located
Slide 5 - DecaWave Limited -
The IoT brings new challenges …
System
Challenges
Current
Security
Options
Product
Challenges
• Mobile assets
• Wireless networks
• Consumers’ experience
• Passwords
• Biometric
• Encryption
• Low processing power
• Low power requirement
• No user I/F for M2M
• Price
Slide 6 - DecaWave Limited -
Evolution of location systems
2000 - 2010
The GPS revolution
2010 - 2015
The start of indoor navigation
2015
The Micro-Location revolution
10m to
100m
3m
to
10m
<30
cm
Slide 7 - DecaWave Limited -
Essential requirements for micro-location applications
<30cm• Reliable accuracy
• Scalable
• Low power
• Affordable
• Real-time
Slide 8 - DecaWave Limited -
IR-UWB*
<0.1m1,000s
‘Things’
UWB – a precision location technology
Up to 6.8Mb/s
High reliability
10cm accuracy
Cost effective
* Impulse Radio, Ultra-Wide BandUsing IEEE 802.15.4-2011
Slide 9 - DecaWave Limited -
How it works …
Two Way Ranging Time Difference of Arrival
Ability to very
precisely measure the
Time-of-Flight
of a radio signal
Simple
measurement
of Time-of-Flight
P2P1
P3
B
Location determined
using a
Multi-Lateration
algorithm
Time
Direct path
through
partition
Reflection
off wallReflection
off wall
Reflection off wall
through 2 partitions
Time-of-Flight
for this 1st path
gives distance
Slide 10 - DecaWave Limited -
The physics of why IR-UWB outperforms other technologies
RSSI
WiFi and
Bluetooth
Sensitive to Multi-Path
Sensitive to Interference
Sensitive to NW load
Characteristics Performance
Sensitive to Multi-Path
Sensitive to Interference
Measurement Method
Threshold
Time
Am
plit
ude
Narrowband with Reflections
Direct Pulse
Reflected Pulse
Sum of the 2 Pulses
Threshold
Time
Am
plit
ude
Narrowband with Noise
Narrowband
Time-of-Flight
Threshold
Time
Am
plit
ude
Ultra Wideband with Reflections
Threshold
Time
Am
plit
ude
Ultra Wideband with Noise
Decawave
IR- UWB
Time-of-FlightImmune to Multi-Path
Immune to Interference
>5m
70%
>2m
70%
<0.1m
100%
Slide 11 - DecaWave Limited -
DecaWave’s DW1000 is a highly-integrated transceiver
specifically designed for micro-location systems.
Ultra Wide Band, Impulse Radios
The DW1000 uses an Impulse Radio to create very short
bursts of RF energy, spread over a large bandwidth.
For ranging, this Ultra Wide Band approach has
significant advantages over narrow-band technologies
such as WiFi and BT
UWB impulse radio advantages:
• RF pulse has ‘clean’ edges, allowing precise determination of
arrival time and hence distance
• Short UWB pulses avoid reflected signal (multi-path) interference
Threshold
Time
Am
plit
ude
Ultra Wideband with Noise
Threshold
Time
Am
plit
ude
Narrowband with Noise
Slide 12 - DecaWave Limited -
Indoor Positioning
No Infrastructure (Mesh)Indoor Positioning
Infrastructure based
Anchor
Gateway
Tag
Anchor
Anchor
Anchor
X, Y, Z
Secure Bubble
Different topologies for different markets
Industrial - CommercialCommercial - Consumer
Automotive
Connected factory asset/tools tracking
staff tracking
Connected Retail staff/customer navigation
asset tracking
Connected home
Staff/customer navigation
Wireless sensor network
Car-to-Car communication
Keyless entry systems
Secure my data
Secure my valuables
Secure my payments
Commercial - Consumer
Automotive
Slide 13 - DecaWave Limited -
Angle of Arrival - for consumer, mobile and portable devices
Angle of Arrival
5° Std Dev
50cm accuracy @ 10m
• Infrastructure Free/Reduced
• Ease of Use/Deployment
• Reduced System Cost
Location-Aware Controls Follow-me, Robot Navigation
Find My Way/Valuables, Peer Awareness
Slide 14 - DecaWave Limited -
A variety of verticals and applications
Automotive
Smart Car Entry Automated Valet
Better Security
Better Safety
Better Services
Secure Bubble
Industrial
Building
Control
Healthcare Agriculture Safety
Security
Factory
Automation
Robotics Mining
Consumer
Building
Control
Retail Home Robots TV / Audio Access Control
Slide 15 - DecaWave Limited -
Geo-Fencing in Manufacturing
Virtual barriers to protect workers from hazardous equipment
Two-Way-Ranging: industrial example
Principle
UWB tracks worker’s location, if they
enter a danger zone alarms sound or
equipment is switched to safe mode
System
• Fixed Anchor network
• Workers equipped with Tags
• High Tag update rate
• Battery powered Tags, recharged daily
Slide 16 - DecaWave Limited -
Connected Home – find my stuff
1. Phone asks Cat’s location to Master via BLE
2. Master wakes up Cat tag with BLE
3. Master locates Cat tag with UWB
4. Master locates User tag/wearable with UWB
5. Master reports locations to Tag via UWB
6. Tag/Wearable reports locations to
Phone via BLE
5. App guides user to Cat
UWB
BLE
Master Locate Tag
Can be positioned anywhere
BLE
UWB
BLE
UWB
BLE
UWB
BLE
UWBBLE
UWB
Slide 17 - DecaWave Limited -
Connected Building – Connected Home
Access control and data security using wearable devices
BLE
2.4G
UWB
WiFi + BLE + UWB Access Point
Locates users
Monitors assets (who uses/carries)
1. Badge wakes up when Beacon detected
2. Access control using UWB (location)
3. Token (optional) exchanged via BLE
between phone and badge/wearable
4. Navigation Services
- UWB Locates
- BLE interface to phone
BLE
UWB
BLE
UWB
BLE
UWB
Point-to-Point
Secure Bubble
Slide 18 - DecaWave Limited -
Connected Home – modifying traditional remote controls
UWB
BLE
2.4G
Sensor
- Interface to TV/STB/Laptop…
- Interface to Thread...
- Locate Remote Control
- Interface to UWB Devices
- Orientation, Power management
UWBLocate remote control
Controlled by UWB/Thread
Additional
fixed
reference
points
Slide 19 - DecaWave Limited -
Connected Home – context aware remote controls
BLE
2.4G
UWB
Locate RC
Can be positioned anywhere
Controlled by UWB/Thread
Additional fixed reference points
BLE
UWB
1. Phone wakes-up UWB via BLE
2. Wearable/user located with UWB
3. Location sent back to Phone via BLE
4. Phone Processes Location and orientation
5. Phone knows which object is pointed
6. Phone controls device:
- Directly through BLE
- Indirectly through BLE & UWB
Note: Can be expanded to fully automated
home control by constantly locating user
NextGeneration
Solution
Slide 20 - DecaWave Limited -
Challenges for location based applications
Needs a technology…
• Accurate enough to enable fine zoning
• Reliable to ensure good user experience
• Real-time to ensure good user experience
• Work over sufficiently long distances
• Low cost & low power
Needs a technology…
• That cannot be spoofed
Slide 21 - DecaWave Limited -
End of Presentation
Slide 22 - DecaWave Limited -
Additional Slides
Slide 23 - DecaWave Limited -
Security … attacks are getting smarter and smarter
NFC Relay Attack
Car Access Relay Attack
Slide 24 - DecaWave Limited -
Location Services Goal:Measure distance between objects in order to determine their precise location
Range determination from Time-of-Flight measurements
Basic Principle:
Time taken for signals to travel
between radio transceivers
allows calculation of range
distance =(t1 + t2) ∗ signal speed
𝟐
Outgoing signal, t1
Return signal, t2
Radio 1 Radio 2
Simple ‘Two Way Ranging’ can be used
to calculate distance from ‘Time of Flight’ (ToF) measurements
