Embedded Systems and Cloud Computing

8/2/2019 Embedded Systems and Cloud Computing

1/9

Vertical integration ofembedded systems and

cloud computing

March 16, 2012 [email protected] 2

Goals:

Outline of an architecture to joint embedded systemswith cloud computing

Discussion on business viewpoint

Contents:

Why embedded systems cloud computing

Review of cloud computing

Internet of things

A touch on implementation

Cloud strategy


Characteristics of embedded product development

How to adopt business model of iPad, Kindle Fire


Google Health was a personal health information (PHR)centralization service: similar to Microsoft HealthVault

Introduced in 2008, discontinued in 2011.


2/9


Free to use for consumers with possibly advertising."Method and apparatus for serving advertisements in anelectronic medical record system"

Population ageing is a shift in the distribution of acountry's population towards older ages.

Patient-centered medical homes, new care delivery


A highly integrated, wearable wireless developmentsystem that comes in a sports watch.

Fitness functions with BlueRobin heart rate monitorheart rate / running speed / distance traveled / calories


http://mastersinhealthcare.org/2010/25-creative-healthcare-gadgets-that-are-changing-the-world/


Questions to be answered at the starting stage

Motivation of buying a product

how to sell product to individuals

how to sell product pack to businesses

How to make personal and group customers happy

impact of products to daily life privacy, social networking, cost to use, ...

Let see a solution by Nike and iPod


3/9


Market fitness center

tracking presence and activities within center

monitored/analyzed by fitness assistants

customer data is the business resource

but how about server and IT staffs ? Market gadget for runners, sport persons, ...

tracking self-paced activities

viewed as health indicator

collected data is private, but maybe shared into social networks

but how to develop software to run on their PCs ?


[NIST][NIST][NIST][NIST] Model for enabling convenient, on-demandnetwork access to a shared pool of configurablecomputing resources that can be rapidly provisionedand released with minimal effort/interactionhttp://csrc.nist.gov/publications/nistpubs/800-145/SP800-145.pdf

On-demand self-service.

Broad network access.

Resource pooling.

Rapid elasticity.

Measured service.


http://www.ibm.com/cloud-computing/us/en/


Public PaaS cloud - Google App Enginehttp://code.google.com/appengine/

Develop web services with Java/Python

Pricing instance hours, bandwidth, storage

Public IaaS cloud - Amazon EC2http://aws.amazon.com/ec2/

Select VM image, deploy middleware and apps

Pricing machine type, usage hours, bandwidth,storage

Private IaaS/PaaS cloud solutions - IBM

TSAM request, deploy, monitor, manage clouds

Workload deployer = OS+server+WebSphere images


4/9


5/9


Internet of things = uniquely identifiable objects andtheir virtual representations in an Internet-like structure

PC (desktop, notebook) speed, full UI, LAN

Tablet, smartphone portability, touch UI, networks

Embedded systems heterogeneous, autonomous


Multitier connectivity requires different skill sets foreach tier MCU / PC / embLinux / smartphone / server


Communication in Internet of things is about data flowthrough each tier protocol conversion

Lowest-level is between device and PC/smartphone/gateway proprietary/binary protocol

low data rate, periodic, real-time communication

mainly C programming for I/O access

PC/smartphone/gateway to cloud service text-based protocol

large data payload, asynchronous communication

mainly web programming via HTTP/URL/XML/REST

PC/smartphone to user UI programming


Network of small-scale embedded devices tend to relyon P2P or star topology

Low-power RF technology

ISM band, less than 1 mW,short distance, small payload,low latency, low data rate

Two proprietary protocols: ad hoc style

SimpliciTi = watch RF access point

BlueRobin = watch heart rate sensor

BSP_Init(); // initialize the BSP (HW/radio)

SMPL_Init(0);

SMPL_LinkListen(&linkID1); // Handle Linking

while (1) {

while((SMPL_SUCCESS == SMPL_Receive(linkID1, msg, &len)) {

// do something such as store and forward

}

}


6/9


Multitasking OS with device drivers, fullnetwork stack, large base of middleware,community-support development toolchain

Choice of C or script programming

Increasing performance due to phone/tablet market

import serial

conn = serial.Serial("/dev/ttyACM0",115200,timeout=1)

conn.write("\xFF\x07\x03")conn.write("\xFF\x08\x07\x00\x00\x00\x00")


Old style is to use socket programming based onTCP/IP connection

cluster topology DHCP is the choice

HTTP+URL offer better compatibility with web sitesscheme://host/path?query_strings

Web services are standardized by best practices

Either REST (public) or SOAP (enterprise)

Use XML or JSON as data container

Use Ajax + JavaScript framework for dynamicweb-based UI

No static IP, please No my own format, please


Web service is software system designed to supportinteroperable M2M interaction over a network

REST architecture relies on HTTP verb messages,resource URI, and XML/JSON

GET = query for data

POST = add new data

PUT = update existing record

DELETE = remove record


PaaS solution that enables businesses to build and hostweb apps on Google infrastructure

Access to features (account, BigTable, CDN) used byGoogle services

Schema-less object database with pre-indexingclass health_record(db.Model):

customer = db.UserProperty()timestamp = db.DateTimeProperty(auto_now_add=True)

class MainPage(webapp2.RequestHandler):

@login_required

def get(self):

self.response.out.write('...')

def post(self):

payload = self.request.get('data')

# extract payload, store records, generate XML

self.response.out.write(xml_resp)


7/9


Even free quota (storage, bandwidth) is enough forserving thousand of end users

Storage

Bandwidth

Web services


Addition services will make business owners/end usersmore happy



Why embedded systems should be integrated withcloud computing

enabling technology for Internet of Things

to compensate limitations of existing PC-basedend-user interaction

How to integrate heterogeneous devices into cloud

environment

multitier network architecture

web APIs protocol conversion

And what should be development concerns

business opportunities

developer skills


8/9


IT integration with any business is about workflows

setup()

loop()

teardown()

request authenticate authorize deploy deliver

logging repository

profile

request authenticate processing response

logging repository

data

request authenticate selection remove


Concerns about cloud computing

security: customer privacy, regulation

vendor login: control of data, app portability

Design consideration: multitenancy

Authorization Authentication

Accounting

Fundamentals of information security

Confidentiality

Integrity Availability

security policy of cloud providers

Cloud Security Alliance's guideline

OAuth 2.0 protocolLogin with FacebookAccess rights


Better when integrated with existing cloud platforms

social network: Facebook, Twitter,

Others: Google Maps, Flickr, Dropbox, ...

Making use of elasticity

temporary expansion (1d,1w,1m) for fitness global

events New business opportunities: think global


Cloud + embedded is just a solution,

other solutions exist with their own advantages

network of smart fitness machines + local serverfitness machines with iPhone/Android attachable

How to get over these solutions ?


9/9


Asst.Prof.Supachai VorapojpisutDept. of Electrical and Computer EngineeringThammasat University

Key research areas:embedded software development, mobile cloudcomputing, wireless sensor networks

Courses:embedded software, RTOS, mobile apps

Awards:SIA 2011 (silver) Android in Logistics

Contact:[email protected]

Documents

Embedded Systems and Cloud Computing