Skip to main content

Intelligent lighting system design

An automatic lighting system , an automatic temperature control system and status monitoring system is described here.

The automatic lighting system is implemented with the help of a state synthesizer, which generates the next state with the help of present state and sensor inputs. For the purpose a program is written and the artificial intelligence is created by burning that program into a microcontroller that emulates the function of a state synthesizer. Here due to the project limitations we are introducing the intelligence to four sections of the room in which automatic lighting is to be brought. The room is logically divided into 3,namely c0,c1,c2(c=cell)equally.

And the logical partition is based on two quantity-sensor pairs (like laser-LDR or IR-IR Sensor) namely,l0&l1.There is two sets of quantity-sensor pairs at the door side to detect the direction of travel of the humans(l2&l3).

After the state identification, we need to glow the corresponding array of LED’s .Also the project includes the room light intensity control according to the ambient light so that the total light inside the room is a constant.

The light intensity control is done through the help of a PWM generator, which generates the PWM corresponding to the input value given as input to the PWM generator, so that the light intensity of the LED array varies according to the ambient light inversely .The PWM generator is implemented with the help of a microcontroller with sensor input to PWM program burned in it.

The temperature control is done through the speed control of fan. For the demonstration purpose we are introducing a dc motor and speed control of it. For the purpose we generate PWM according to the temperature value and drive the motor. The result will be a varying fan speed according to the temperature.

DISPLAY INTERFACE:

Display interface is to be done with the help of a pc or a microcontroller with LCD display. Display unit mainly displays the current status of the room like in which section the human concentration is high and the total number of persons inside the room, and finally the temperature of the room.

The program for the state synth and other details are available in electronic error.

Labels:

Comments

Post a Comment

Popular posts from this blog

LDR :-Light dependent resistors

A Light Dependent Resistor ( LDR, photoconductor, or photocell) is a device which has a resistance which varies according to the amount of light falling on its surface. They will be having a resistance of 1 MOhm in total darkness, and a resistance of a 1 to 10 of kOhm in bright light. A photoelectric device can be either intrinsic or extrinsic. Applications: An LDR can even be used in a simple remote control circuit using the backlight of a mobile phone to turn on a device - call the mobile from anywhere in the world, it lights up the LDR, and lighting can be turned on remotely! Light Dependent Resistor Circuits: There are two basic circuits using light dependent resistors - the first is activated by darkness, the second is activated by light. In the circuit diagram on the left , the led lights up whenever the LDR is in darkness . The 10K variable resistor is used to fine-tune the level of darkness required before the LED lights up. The 10K standard resistor can be changed as require...
4 comments
Read more

When can we expect personal virtual assistant drones?

 Virtual Assistants such as Alexa , Cortana are commonly used these days. They are  capable of voice interaction, music playback, making to-do lists, streaming podcasts, setting alarms, playing audiobooks, and providing weather, sports, traffic  and other real-time information, such as news. Some of them can also control several smart devices. We are also familiar with drones these days.  Why not combine the power of Virtual Assistants and drones and make something called "personal virtual assistant drones"? The key challenges of creating an integrated system like this is the energy requirement. Batteries having high energy density needs to be used for these applications. With the newer Li Polymer batteries we can build prototypes of these.  These assistants can serve the computational as well as recreational needs of people. With the growing demand for integration and scaling down of product dimensions this seems highly achievable.   
Post a Comment
Read more

Vishualisation of EM radiation

Is there any possibility f observing any radiation other than light with our eyes?The answer is yes, but our bandwidth is limited & the light sensor (eye) we have senses only the radiation falling in the range of bandwidth.So a possibility is here to translate the frequencies we want to observe to the frequencies we can see.Such a device may make sense in the later world ,but now it may feel not digesting.Me and Arun Prabhakar observed the IR rays with the help of sony erricson mobile camera,even though the actual reason ,we didn't know,the process happened anyway.After some years there will be ppl wearing some helmet that could permit easy view of the whole em spectrum.
1 comment
Read more