The document discusses wireless sensor networks and their components. It describes various types of sensors like temperature sensors, proximity sensors, accelerometers, infrared sensors, pressure sensors, light sensors, ultrasonic sensors, smoke sensors, touch sensors, color sensors, humidity sensors and tilt sensors. It provides examples of projects using different sensors and discusses concepts like Internet of Things (IoT), Contiki operating system, and various wireless sensor node platforms.
This presentation covers:
Some basic definitions & concepts of digital communication
What is Phase Shift Keying(PSK) ?
Binary Phase Shift Keying – BPSK
BPSK transmitter & receiver
Advantages & Disadvantages of BPSK
Pi/4 – QPSK
Pi/4 – QPSK transmitter & receiver
Advantages of Pi/4- QPSK
This presentation provides an brief introduction about Bluetooth Low Energy. This also covers the basic protocol layers of bluetooth low energy. Also discusses about the ble device discovery, service discovery, connection establishment, connection termination, etc.
Introduction to basics of wireless networks such as
• Radio waves & wireless signal encoding techniques
• Wireless networking issues & constraints
• Wireless internetworking devices
This presentation covers:
Some basic definitions & concepts of digital communication
What is Phase Shift Keying(PSK) ?
Binary Phase Shift Keying – BPSK
BPSK transmitter & receiver
Advantages & Disadvantages of BPSK
Pi/4 – QPSK
Pi/4 – QPSK transmitter & receiver
Advantages of Pi/4- QPSK
This presentation provides an brief introduction about Bluetooth Low Energy. This also covers the basic protocol layers of bluetooth low energy. Also discusses about the ble device discovery, service discovery, connection establishment, connection termination, etc.
Introduction to basics of wireless networks such as
• Radio waves & wireless signal encoding techniques
• Wireless networking issues & constraints
• Wireless internetworking devices
WirelessHART is the first open wireless standard for the process control industry. It provides high reliability, security and real-time communication. This presentation introduces some main features of WirelessHART standard.
E-AWARE Technologies is a company specialized in wireless network solutions for monitoring and control in industrial environments. Our product offering consists of end-to-end wireless communications product lines and solutions for fast wireless standard integration.
This presentation is all about the wireless sensor networks, how they collect data using aggregation, and how they evaluate or calculate the parameters
CR : smart radio that has the ability to sense the external environment, learn from the history and make intelligent decisions to adjust its transmission parameters according
to the current state of the environment.
In telecommunication, an eye pattern, also known as an eye diagram, is an oscilloscope display in which a digital signal from a receiver is repetitively sampled and applied to the vertical input, while the data rate is used to trigger the horizontal sweep. It is so called because, for several types of coding, the pattern looks like a series of eyes between a pair of rails. It is a tool for the evaluation of the combined effects of channel noise and intersymbol interference on the performance of a baseband pulse-transmission system. It is the synchronised superposition of all possible realisations of the signal of interest viewed within a particular signaling interval.
INTRODUCTION TO WIRELESS SENSOR NETWORKS.
This powerpoint generally defines Wireless Sensor Networks, the advantages, disadvantages and the general types.
WirelessHART is the first open wireless standard for the process control industry. It provides high reliability, security and real-time communication. This presentation introduces some main features of WirelessHART standard.
E-AWARE Technologies is a company specialized in wireless network solutions for monitoring and control in industrial environments. Our product offering consists of end-to-end wireless communications product lines and solutions for fast wireless standard integration.
This presentation is all about the wireless sensor networks, how they collect data using aggregation, and how they evaluate or calculate the parameters
CR : smart radio that has the ability to sense the external environment, learn from the history and make intelligent decisions to adjust its transmission parameters according
to the current state of the environment.
In telecommunication, an eye pattern, also known as an eye diagram, is an oscilloscope display in which a digital signal from a receiver is repetitively sampled and applied to the vertical input, while the data rate is used to trigger the horizontal sweep. It is so called because, for several types of coding, the pattern looks like a series of eyes between a pair of rails. It is a tool for the evaluation of the combined effects of channel noise and intersymbol interference on the performance of a baseband pulse-transmission system. It is the synchronised superposition of all possible realisations of the signal of interest viewed within a particular signaling interval.
INTRODUCTION TO WIRELESS SENSOR NETWORKS.
This powerpoint generally defines Wireless Sensor Networks, the advantages, disadvantages and the general types.
This presentation contains an overview about the hot topics internet of things.
Presentation contins an intro to the modern embedded systems industry with simple technical concepts
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
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Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
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Final project report on grocery store management system..pdfKamal Acharya
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Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
4. Main Components of Single Node
Architecture
Communication
Device
Controller
Sensors/
Actuators
Power Supply
Memory
5.
6.
7.
8.
9.
10.
11.
12. Different Types of Sensors
Live in a World of Sensors. You can find different
types of Sensors in our homes, offices, cars etc.
working to make our lives easier by turning on the
lights by detecting our presence, adjusting the room
temperature, detect smoke or fire, make us
delicious coffee, open garage doors as soon as our
car is near the door and many other tasks.
All these and many other automation tasks are
possible because of Sensors.
What is a Sensor
What are the Different Types of Sensors
Applications of these different types of Sensors
13. Example
Simple example of an automated system, which is
possible because of Sensors (and many other
components as well).
14. Real Time Application of
Sensors
Discuss about Autopilot System in aircrafts. Almost
all civilian and military aircrafts have the feature of
Automatic Flight Control system or sometimes called
as Autopilot.
15. An Automatic Flight Control System consists of different sensors for
different tasks like speed control, height, position, doors, obstacle, fuel,
maneuvering and many more. A Computer takes data from all these
sensors and processes them by comparing them with pre-designed/pre-
defined values.
The computer then provides control signal to different parts like engines,
flaps, rudders etc. that help in a smooth flight. The combination of
Sensors, Computers and Mechanics makes it possible to run the plane in
Autopilot Mode.
All the parameters i.e. the Sensors (which give inputs to the Computers),
the Computers (the brains of the system) and the mechanics (the outputs
of the system like engines and motors) are equally important in building a
successful automated system.
16. We will be concentrating on the Sensors
part of a system and look at different
concepts associated with Sensors (like
types, characteristics, classification etc.).
17. What is a Sensor?
Sensor as an input device which
provides an output (signal) with
respect to a specific physical
quantity (input).
18. Example:- LDR or a Light Dependent Resistor. It is a device, whose
resistance varies according to intensity of light it is subjected to.
When the light falling on an LDR is more, its resistance becomes very
less and when the light is less, well, the resistance of the LDR
becomes very high.
Connect this LDR in a voltage divider and check the voltage drop
across the LDR. This voltage can be calibrated to the amount of light
falling on the LDR. Hence, a Light Sensor.
19. List of different types of sensors that are commonly used in
various applications.
sensors are used for measuring one of the physical properties like
Temperature, Resistance, Capacitance, Conduction, Heat Transfer
etc.
Temperature Sensor
Proximity Sensor
Accelerometer
IR Sensor (Infrared Sensor)
Pressure Sensor
Light Sensor
Ultrasonic Sensor
Smoke, Gas and Alcohol Sensor
Touch Sensor
Color Sensor
Humidity Sensor
Tilt Sensor
Flow and Level Sensor
21. Proximity Sensors
Proximity Sensor is a non-contact
type sensor that detects the presence
of an object. Proximity Sensors can
be implemented using different
techniques like Optical (like Infrared
or Laser), Ultrasonic, Hall Effect,
Capacitive, etc.
Some of the applications of Proximity
Sensors are Mobile Phones, Cars
(Parking Sensors),
22. Ultrasonic Sensor
An Ultrasonic
Sensor is a non-
contact type device
that can be used to
measure distance
as well as velocity
of an object. An
Ultrasonic Sensor
works based on
the properties of
the sound waves
with frequency
greater than that
of the human
audible range.
23. List of projects based on few of
the above mentioned Sensors.
Light Sensor – LIGHT DETECTOR USING LDR
Smoke Sensor – SMOKE DETECTOR ALARM CIRCUIT
Alcohol Sensor – HOW TO MAKE ALCOHOL
BREATHALYZER CIRCUIT?
Touch Sensor – TOUCH DIMMER SWITCH CIRCUIT
USING ARDUINO
Color Sensor – ARDUINO BASED COLOR DETECTOR
Humidity Sensor – DHT11 HUMIDITY SENSOR ON
ARDUINO
Tilt Sensor – HOW TO MAKE A TILT SENSOR WITH
ARDUINO?
24. What is IoT?
The Internet of Things (IoT) is the network
of physical objects—devices, vehicles,
buildings and other items embedded with
electronics, software, sensors, and network
connectivity—that enables these objects to
collect and exchange data.
25. Various Names, One Concept
M2M (Machine to Machine)
“Internet of Everything” (Cisco Systems)
“World Size Web” (Bruce Schneier)
“Skynet” (Terminator movie)
30. History of Contiki
Developed by Adam Dunkels of SICS
First released on March 10, 2003
Named after Thor Heyerdahl's famous
Kon-Tiki raft
“Contiki runs on tiny and prehistoric
computers, yet is able to do much of what
we expect from large and modern
computers.”
31. Who uses it?
Most common application is as an OS
for Networks of Embedded Systems
Use it as an OS for older and smaller
systems
Ports for Apple II, Atari, Gameboy, NES,
Commodore 64 and 128
32. What is contiki
OS acts as resource manager.
Cheap sensor node.
Micro-Electro Mechanical System
(MEMS)-based sensor
technology(wireless sensor node is
composed of a microcontroller,
transceiver, timer, memory and
analog to digital converter)
33. microcontroller operates al low
frequency compared to traditional
processing units
Contiki is an open source OS for
WSN sensor nodes.
It is a lightweight and portable OS
written in C language and it is build
around an event-driven kernel.
34. OS provides preemptive
multitasking that can be used at the
individual process level.
Contiki configuration consumes 2
kilobytes of RAM and 40 kilobytes of
ROM
36. Event Driven Kernel
Kernel is event based making it a
real time OS
An event triggers the kernel to call the
corresponding event handler
Functions very similar to TinyOS
Has its drawbacks, i.e. long running
computations
37. TCP/IP Stack Support
Implements Dunkels’s own TCP/IP
stack called μIP
Memory Requirements
Kilobytes of Program Code
Hundreds of bytes of RAM
Allows to connect to networks using
SLIP (Serial Line IP)
38. Dynamic Program Loading
The Core Code and Program Code
are kept separate in ROM.
Program Code loaded at runtime.
Program code can be loaded from
ROM or RAM
Allows for “Programming” for
networks of sensors
39. Small Memory Requirements
The base system, providing
multitasking and TCP/IP networking,
can be compiled in about 32 KB
Smallest system to date uses about
2000 bytes of RAM
Contiki for its low memory usage in
Embedded
40. Protothreads
Implemented as an additional library
on top of the event based kernel
Stackless, lightweight thread
comprised of a single C function using
2 bytes of RAM to record its state
Adds a layer of abstraction to the
state-machine event based code
usually written, to create a sequential
flow of program code.
41. Event-driven
Event-driven
(TinyOS)
Processes do not run
without events
Event occurs: kernel
invokes event
handler
Event handler runs
to completion
(explicit return;)
Kernel
Handler
Handler
Handler
Handler
43. Contiki Programs
Contiki Tool-kit (CTK) GUI
Virtual Network Computing (VNC) Server
A Web Server
A Web Browser
A command line shell.
A telnet server.
An FTP client.
A disk directory file reader.
A file and disk image downloader utility.
A simple desktop calculator.
44. Additional Features
Simulation Support :Contiki provides
sensor network simulations through
Cooja
Security Support: secure
communication protocol with the name
ContikiSec
Language Support:Cotiki supports
application development in the C
language
45. Supported Platforms :Contiki
supports the following sensing
platforms: Tmote, AVR series MCU.
46. IWING-MRF Motes
Radio
transceiver
8-bit AVR Microcontroller
USB Connector
(for reprogramming
and power)
Analog/Digital sensor
connectors
External
battery connector
Digital sensor
connectors
47. Built from components
Built-in USB boot loader
Reprogrammed via USB
Easy to modify and extend hardware
48. Processor
8-bit AVR microcontroller
ATMega88/168/328, 12 MHz
16KB flash, 2KB RAM
RF transceiver
Microchip's MRF24J40A/B/C, 2.4GHz
IEEE 802.15.4
SPI interface
External connectors
6 ADC connectors (can also be used as
TWI)
Power options
3 – 3.6 VDC
USB or 2 AA batteries
49. Mica Motes
By Crossbow, USA
MCU:
Atmel ATMega128L
Comm: RFM TR1000
50. EYES Nodes
By Infineon, EU
MCU: TI MSP430
Comm: Infineon radio modem TDA5250
51. Btnote
By ETH Zurich
MCU:
Atmel ATMega128L
Comm:
Bluetooth
52. ScatterWeb
By Computer Systems & Telematics
group, Freie Universitat Berlin
MCU:
TI MSP 430
Comm:
Bluetooth
53. Tmote Sky
By Sentilla (formerly Moteiv),
USA
MCU:
TI MSP430
Comm:
Chipcon CC2420
(IEEE 802.15.4)
54. IRIS Motes
By Crossbow, USA
MCU: ATMega128L
Comm: Atmel's RF230 (IEEE 802.15.4)
3x radio range compared to Tmote
"Postage-stamp" form factor costs as low as $29
per unit (when purchased in large volumes)
55. IMote2
By Intel Research
MCU: PXA271 XScale
Comm: Chipcon CC2420 (IEEE802.15.4)