Using Raspberry Pi - Embedded system

Schools, colleges and TV Contests, there is a fastest finger first system used to declare who pressed the button first so that  the group which has pressed push button first gets an opportunity to answer. But the problem is when 2 or more teams press the button within a very small time gap.  The Raspberry Pi - Embedded system based system takes care of this problem. It is built with Raspberry Pi board and SSR modules are used for switching.

The Raspberry Pi runs a standard Raspbian Linux distribution with Fi-fi dongle, installed GPIO library and software written Python. Most of the coding is done on the Raspberry Pi.

HDMI output is connected to an LCD monitor through this one will come to know what was the  sequence buttons were pressed by the teams. This happens when 2 or more teams press the button simultaneously. This type of Using Raspberry Pi - Embedded system circuit can also be controlled via an SSH conncetion using VX ConnectBot software on an Android smartphone.

You need VX ConnectBot software, which you can download from play store on any Android smartphone. Put it in Start tethering or hotspot mode and connect Raspberry Pi.

A solid state relay is used as a switching device. It has a sensor that responds to an appropriate input signal. The relay is designed to switch either AC or DC to the load. It serves the same function as an electromechanical relay.

The codes are written in Python language which detects the push button switches that are connected to the glowing bulbs, which show the fastest finger first contestants’ sequence.

Each bulb holder and push button switch is fitted on a general purpose board/ box having separate pair of wires for each bulb holder and the switch. 5v supply is given to relay module from Raspberry Pi. Raspberry Pi initialises the push button switches pins as input and clears the SSR pins to switch off the indicators. 

The moment contestants press their allotted switches, contestants names and their team description will be displayed on the LCD screen provided for the purpose. Also respective indicator bulbs glow. Thus Raspberry Pi is perfect solution for fastest finger first type projects.

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Future of Building automation system- Home automation prospects

The trend of automating home activities by using intelligent terminals to control appliances and equipment has opened a hug Building automation market globally, bringing new exciting opportunities for technology companies. According to industry experts, the building automation systems market will be driven by the trend towards energy efficient, safe luxurious and convenient homes, smart homes. Forecasts for total market for smart homes in Asia pacific region will be 10 Billion USD by 2020.  This is just tip of the iceberg. 4G deployment & mobile services will boost these figures further. Smart Homes and Home automation being a privilege of a few rich is going to be truly a mass scale opportunity.

Although home automation in India is still a nascent market, in sync with global trend, the domestic home automation sector will see phenomenal growth in the next few years. According to an estimate, home automation sector in India is expected to grow at a CAGR of 24 % in the next 5 years. Metros like Delhi, Mumbai, Banglore, Chennai, Hyderabad, Ahmedabad are going to fuel this demand potential.

Growth opportunities in home automation market are due to increasing adoption of automated services and Govt incentives for green initiatives. Building automation Market will also be driven by the increasing demand for energy efficient solutions and rising security concerns. Factors such as employment opportunities, economic development, easy hosing finance, increasing urbanization, rising standards of living and increase in consumer spending on lifestyle products are also driving the growth of home automation. 

CCTV & electronics surveillance systems, HVAC control, smart technologies and their connectivity to one another is becoming reality. Now devices can connect and talk to each other. A large no of internet enabled but physically unconnected devices in India will be connected to the web and country become very relevant in machine to machine communication landscape in near future. This in turn would enable creation of an Internet of Things IOT ecosystem necessary for the connected home and concept of home automation will take off in a big way.

Home automation market includes, but is not limited to centralized controls for lighting, electronics surveillance, CCTV security, access control systems, HVAC systems. From applications perspective the market is classified into segments like lighting, safety and security, entertainment and energy management. The market share of safety and security exceeds that of entertainment applications due to rising concerns related to security among general public. With increased consumer spending on luxury items, HVAC Control, HVAC design & drafting, energy management services is going to increase.

The home automation market offers exciting revenue opportunities for sonsumer electronics companies as well as semiconductor companies dealing with embedded systems, embedded automation components and kits. However innovative products that widen the appeal of connected home technology for mass market will rule the market.

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