Sensor based Projects

(KL-210) Smart Energy Efficient Automation for Smart Home/Offices

There is increasing demand of electricity savings at every where particularly at the large scale houses and commercial places like super mall etc. There are very high consumption of electricity in too much lights and fan placed, which is need to operate depends on the density of people at the particular zone.    

 The objective  of this Project is to develop a bidirectional visitor counter’ controls the lights as well as count the number of individuals entering and leaving in a large scale houses and mall. A fan speed is also regulated automatic on sensing room temperature and number of person at the particular area. Also on sensing the day-night light by LDR (Light dependent sensor) the lights of particular zone are being switched automatic at night and in case of  low day light. A PIR motion sensor sense the human movement and based on it the lights of that particular area becomes automatic switched on/off.

  When an individual enters into a room then one counter is incremented by one and one light in a room will be switched ON and when the individuals leaves a room then the counter is decremented by one. When the number of individuals in a room is greater than 5 then 2 lights will be switched ON. Similarly on increase of every 5 individuals one more light will switched ON. Lights will turn OFF when all the individuals go out of a room. The total number of individuals present inside a room is also displayed on the LCD display. IR sensors and microcontroller does above job. IR sensors sense the obstruction and microcontroller receives the signals produced by the obstruction from the sensors. The received signal is operated via program stored in ROM of Microcontroller..

 The automatic speed control of fan is also done based on sensing a room temperature r and number of person inside a room. A LDR sensor is also interfaced to sense day-night light. An opto-isolated relay driver drives the particular relay to operate a light connected based on the IR,PIR and LDR sensor status and programming logic as defined. This project design is appropriate according to the modern lifestyle. The simulation of the system is also carried out in Proteus Professional Software v 8.0.

(KL-527) Ambulance Tracking and Patient Health Monitoring System using GPS and GSM

This system propose an ambulance tracking and continuous patient health monitoring using GPS locator and GSM system. In this project we get SMS from project. SMS contains the longitude and latitude of the vehicle location. SMS also contains health parameters i.e. temperature, humidity and heartbeat. This SMS is sent after periodic interval of time i.e. after every 2 minutes.

This system hardware involves mainly 4 parts: Microcontroller, Biomedical sensors, GPS and GSM module, LCD and Buzzer. To find health status of patient we are using body temp sensor and pulse rate sensor. These sensors will measure body temperature and the pulse rate of patient and will be stored in MCU memory. The GPS is used to log the longitude and the latitude of patient, which is stored in the MCU memory. The GSM unit sends the SMS to the army base camp containing the health parameters and the location of patient.

SMS will be received at the base station. Upon receiving the SMS, the officer at the base station can find Patient’s location on maps based by using the co-ordinates received on text sms. Also the health status is shown on mobile. In this way we can keep a track and continuous monitor the patient health in emergency condition from any remote place.

Temperature Controlled LEDs using LM35

This project proposed a building a simple yet very useful circuit using Temperature Sensor LM35. In this circuit, we are going to control the LEDs according to temperature around. If temperature goes beyond a particular level (50 Degree in this circuit) then Red LED will glow automatically, otherwise yellow LED remains on below that particular temperature. This threshold temperature value can be set by adjusting the Variable resistor in the circuit, according to requirement.

This Temperature controlled Lights circuit can be useful in many ways, like it can work as temperature indicator or it can trigger any device like fan or alarm beyond a particular temperature. It can also work as fire alarm if you set the threshold temperature very high like 100 Degree Celsius. In this circuit you will also learn about how to use LM35 sensor in any circuit. LM35 is very popular and inexpensive temperature sensor generally used as digital thermometer or to measure temperature.

(KL-531) In Shoe Plantar Pressure Analysis over Labview GUI for Medical Treatments/Athlets

The In Shoe Plantar Pressure measurement is a research effort to reduce running injuries and prevent Foot Strike. Despite all the money that has been dispensed into reducing running injuries by designing better shoes, the ideal way to reduce running injuries may be simply to find a way to see the impact force and pressure in different parts of the foot while running. The goal of this project is to analyse the maximum pressure in different parts of foot while running and to inform the person if they run on their heel. This information is based on the plot of the pressure range of their running for both recorded and real time. The approach is to design a circuit to collect data output from sensors, and then converts the data to pressure and send it to remote LabView terminal over wireless bluetooth device.

This project design involves an Arduino family microcontroller and 3 pair (left & right shoe) of FSR Pressure sensor interfaced to Analog to digital convertor of microcontroller. The FSR Sensors are attached to shoe pair integrated to insole at different place in foot such as heel area, midfoot area and metatarsal. The ADC circuit reads all the sensors simultaneously and convert readings into digital pressure unit. The pressure readings are than serially transmitted to LabView terminal through a bluetooth module interfaced to the microcontroller. At Labview GUI it can be viewed in graphical plots so it can be continuously analysed on the impact and variation of pressure in foot.

This system is very much helpful to Footwear research for design as well to Identify pressure range for medical purposes and personal running regulation.

Temperature Meter Display

This temperature meter uses the precision micro power centigrade sensor IC LM35. The output voltage of the IC is linearly equal to +10Mv per degree centigrade. The temperature level is displayed through LED readout.

The circuit uses the precision temperature IC LM35. This three pin transistor like IC give output linearly equal to +10mV per degree rise in temperature. It can measure temperature between -4 degree to +110 degree centigrade. Its related type LM34 is Fahrenheit sensor and its output is equal to -10mV per degree Fahrenheit. Output of IC1 is directly given into the input of the display driver IC LM3914. It is a monolithic integrated circuit with 10 active low outputs that can drive 10 LEDs directly without a current limiting resistor.

The internal circuitry of the IC adjusts the current passing through the LEDs. The input of LM 3914 is very sensitive and its outputs 18 – 10 sinks current one by one as the input receives an increment of 125 milli volts. Here only 6 outputs are used to drive 6 LEDs. More LEDs can be included in the remaining outputs if required. As the IC LM35 senses temperature rise, LEDs one to six light up. If the sensitivity is not high, VR2 can be omitted. Then output of IC LM35 should be directly connected to the input of IC LM3914.