IEEE Consumer Electronics Magazine - July 2018 - 78

In addition to these modules, the Raspberry Pi has been
equipped with the 3G/GPRS shield [26], enabling 3G connection through a mobile SIM, and with the Powerbank RS Pro
battery [27]. Some of the described functionalities are available in black boxes installed by insurance companies or may
be accessed through existing control units. However, our goal
was to develop a prototype of a portable retrofitting device
integrating all functionalities, which is not yet available.
Figures 4-6 depict the state chart diagram of the electronic device and the activity diagrams for automatic changes
detection and coverage activations. To gather data from the
sensors, several Python scripts have been written. Once sensors are activated, some scripts continuously check data coming from them to detect changes with respect to the smart
contract configuration. Data are gathered until the contract
expires. Currently, data are extracted every 5 s, even though
the insurance company could set a different interval.
In particular, as soon as the number of passengers varies, a
script invokes the changeState() function of the smart
contract to modify passengers' coverage. Similarly, should
the vehicle leave or enter a predefined area (set by the customer through the mobile app), another script triggers the
function to modify the associated coverage. The location and
safety belt connection data are periodically saved on the
device or company's database.

Waiting for Activation
Service Activated
Sensors Activated
Waiting for
Measurements
After n s
Sensors Data
Detected
Passengers
Detected

GPS Position
Detected

Safety Belts
Detected
Data Detected

Contract Expired

Contract in Progress

Readings Stopped

Usage sCenario
Figure 7(a) depicts the app main screen. From here, the customer can see an overview of the state of each coverage.

FigUre 4. A state chart diagram of the device.

Smart Contract

Electronic Device

Service Started
Type of Detected Change
Safety Belts

Number of Passengers
Location

Save Safety Belts
Information in
Database

Save GPS
Data in
Database

Enter/Exit
Location?

Y
N

Y
Contract
Active?

FigUre 5. An activity diagram for changes detection.

78 IEEE Consumer Electronics Magazine

^

july 2018

N

Detected>
Specified?
Y
Send
Modification
Request

N
Execute/Validate
Modification
Request
Send
Modification
Results



Table of Contents for the Digital Edition of IEEE Consumer Electronics Magazine - July 2018

Contents
IEEE Consumer Electronics Magazine - July 2018 - Cover1
IEEE Consumer Electronics Magazine - July 2018 - Cover2
IEEE Consumer Electronics Magazine - July 2018 - Contents
IEEE Consumer Electronics Magazine - July 2018 - 2
IEEE Consumer Electronics Magazine - July 2018 - 3
IEEE Consumer Electronics Magazine - July 2018 - 4
IEEE Consumer Electronics Magazine - July 2018 - 5
IEEE Consumer Electronics Magazine - July 2018 - 6
IEEE Consumer Electronics Magazine - July 2018 - 7
IEEE Consumer Electronics Magazine - July 2018 - 8
IEEE Consumer Electronics Magazine - July 2018 - 9
IEEE Consumer Electronics Magazine - July 2018 - 10
IEEE Consumer Electronics Magazine - July 2018 - 11
IEEE Consumer Electronics Magazine - July 2018 - 12
IEEE Consumer Electronics Magazine - July 2018 - 13
IEEE Consumer Electronics Magazine - July 2018 - 14
IEEE Consumer Electronics Magazine - July 2018 - 15
IEEE Consumer Electronics Magazine - July 2018 - 16
IEEE Consumer Electronics Magazine - July 2018 - 17
IEEE Consumer Electronics Magazine - July 2018 - 18
IEEE Consumer Electronics Magazine - July 2018 - 19
IEEE Consumer Electronics Magazine - July 2018 - 20
IEEE Consumer Electronics Magazine - July 2018 - 21
IEEE Consumer Electronics Magazine - July 2018 - 22
IEEE Consumer Electronics Magazine - July 2018 - 23
IEEE Consumer Electronics Magazine - July 2018 - 24
IEEE Consumer Electronics Magazine - July 2018 - 25
IEEE Consumer Electronics Magazine - July 2018 - 26
IEEE Consumer Electronics Magazine - July 2018 - 27
IEEE Consumer Electronics Magazine - July 2018 - 28
IEEE Consumer Electronics Magazine - July 2018 - 29
IEEE Consumer Electronics Magazine - July 2018 - 30
IEEE Consumer Electronics Magazine - July 2018 - 31
IEEE Consumer Electronics Magazine - July 2018 - 32
IEEE Consumer Electronics Magazine - July 2018 - 33
IEEE Consumer Electronics Magazine - July 2018 - 34
IEEE Consumer Electronics Magazine - July 2018 - 35
IEEE Consumer Electronics Magazine - July 2018 - 36
IEEE Consumer Electronics Magazine - July 2018 - 37
IEEE Consumer Electronics Magazine - July 2018 - 38
IEEE Consumer Electronics Magazine - July 2018 - 39
IEEE Consumer Electronics Magazine - July 2018 - 40
IEEE Consumer Electronics Magazine - July 2018 - 41
IEEE Consumer Electronics Magazine - July 2018 - 42
IEEE Consumer Electronics Magazine - July 2018 - 43
IEEE Consumer Electronics Magazine - July 2018 - 44
IEEE Consumer Electronics Magazine - July 2018 - 45
IEEE Consumer Electronics Magazine - July 2018 - 46
IEEE Consumer Electronics Magazine - July 2018 - 47
IEEE Consumer Electronics Magazine - July 2018 - 48
IEEE Consumer Electronics Magazine - July 2018 - 49
IEEE Consumer Electronics Magazine - July 2018 - 50
IEEE Consumer Electronics Magazine - July 2018 - 51
IEEE Consumer Electronics Magazine - July 2018 - 52
IEEE Consumer Electronics Magazine - July 2018 - 53
IEEE Consumer Electronics Magazine - July 2018 - 54
IEEE Consumer Electronics Magazine - July 2018 - 55
IEEE Consumer Electronics Magazine - July 2018 - 56
IEEE Consumer Electronics Magazine - July 2018 - 57
IEEE Consumer Electronics Magazine - July 2018 - 58
IEEE Consumer Electronics Magazine - July 2018 - 59
IEEE Consumer Electronics Magazine - July 2018 - 60
IEEE Consumer Electronics Magazine - July 2018 - 61
IEEE Consumer Electronics Magazine - July 2018 - 62
IEEE Consumer Electronics Magazine - July 2018 - 63
IEEE Consumer Electronics Magazine - July 2018 - 64
IEEE Consumer Electronics Magazine - July 2018 - 65
IEEE Consumer Electronics Magazine - July 2018 - 66
IEEE Consumer Electronics Magazine - July 2018 - 67
IEEE Consumer Electronics Magazine - July 2018 - 68
IEEE Consumer Electronics Magazine - July 2018 - 69
IEEE Consumer Electronics Magazine - July 2018 - 70
IEEE Consumer Electronics Magazine - July 2018 - 71
IEEE Consumer Electronics Magazine - July 2018 - 72
IEEE Consumer Electronics Magazine - July 2018 - 73
IEEE Consumer Electronics Magazine - July 2018 - 74
IEEE Consumer Electronics Magazine - July 2018 - 75
IEEE Consumer Electronics Magazine - July 2018 - 76
IEEE Consumer Electronics Magazine - July 2018 - 77
IEEE Consumer Electronics Magazine - July 2018 - 78
IEEE Consumer Electronics Magazine - July 2018 - 79
IEEE Consumer Electronics Magazine - July 2018 - 80
IEEE Consumer Electronics Magazine - July 2018 - 81
IEEE Consumer Electronics Magazine - July 2018 - 82
IEEE Consumer Electronics Magazine - July 2018 - 83
IEEE Consumer Electronics Magazine - July 2018 - 84
IEEE Consumer Electronics Magazine - July 2018 - 85
IEEE Consumer Electronics Magazine - July 2018 - 86
IEEE Consumer Electronics Magazine - July 2018 - 87
IEEE Consumer Electronics Magazine - July 2018 - 88
IEEE Consumer Electronics Magazine - July 2018 - 89
IEEE Consumer Electronics Magazine - July 2018 - 90
IEEE Consumer Electronics Magazine - July 2018 - 91
IEEE Consumer Electronics Magazine - July 2018 - 92
IEEE Consumer Electronics Magazine - July 2018 - 93
IEEE Consumer Electronics Magazine - July 2018 - 94
IEEE Consumer Electronics Magazine - July 2018 - 95
IEEE Consumer Electronics Magazine - July 2018 - 96
IEEE Consumer Electronics Magazine - July 2018 - Cover3
IEEE Consumer Electronics Magazine - July 2018 - Cover4
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_20240102
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_20231112
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_20230910
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_20230708
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_20230506
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_20230304
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_20230102
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_20221112
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_20220910
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_20220708
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_20220506
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_20220304
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_20220102
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_20211112
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_20210910
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_20210708
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_20210506
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_20210304
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_202010
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_202009
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_202007
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_202004
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_202003
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_202001
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_201910
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_201909
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_201907
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_201905
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_201903
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_201901
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_201811
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_201809
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_201807
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_201805
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_201803
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_july2017
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_april2017
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_january2017
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_october2016
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_july2016
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_april2016
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_january2016
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_october2015
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_july2015
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_april2015
https://www.nxtbook.com/nxtbooks/ieee/consumerelectronics_january2015
https://www.nxtbookmedia.com