Abstract:

In this competitive world and busy schedule human can’t spare more time to perform daily activities manually. It is very easy to control devices through PC instead of controlling devices manually. To communicate any device to pc needs HyperTerminal which is understand only by technical people. But it is better to have any extra communication in between PC and device. So that we have tool called as “front ends”. These front ends are very good and which are very easy. Non technical people easily interact with device from PC easily. These front end tools are designed by C# .net application. Communication has good visibility and good interaction in front ends (These front ends may vary from project to project).

  In this project microcontroller is connected PC. PC has C# .net application and it can convert text to voice. Microcontroller gets data or message from sensors (fire,temperature and humidity) and sends to application through serial communication. Application always opens the com port and read data on com port.

This project is helpful in data loggers, industrial security systems and industrial parameters announcement…etc., user can monitor messages from remote place also. This project is useful in safety and security applications. Anybody can alert using these voice announcements no need to know about any technical parameters. We can implement any type  voice announcement system through this project.      This project uses regulated 5V, 500mA power supply. Unregulated 12V DC is used for relay. 7805 three terminal voltage regulator is used for voltage regulation. Full wave bridge rectifier is used to rectify the ac output of secondary of 230/12V step down transformer.

TECHNICAL SPECIFICATIONS:

HARDWARE:

Micro controller         :           AT89S52

Crystal                        :           11.0592 MHz

LED                            :           5mm Red LED

Smoke sensor

Thermistor

Humidity sensor

Power supply

Transformer                :           12V step down 

Filter                           :           1000uf/25V

Voltage Regulator      :           7805

SOFTWARE:

Keil micro vision

Proteus

UC flash

PC (C# .net application)

APPLICATIONS:

• Industrial applications
• Automatic control systems
• Industrial parameters announcement system