INDUSTRIAL INSTRUMENTATION & PROCESS CONTROL SYSTEM:

INDUSTRIAL INSTRUMENTATION & PROCESS CONTROL SYSTEM CONSIST OF:-

1)       Microcontroller 8951.

2)       Sensor section

3)       Switches

4)       Power supply.

5)       LED panel for indication.

6)       Relay driver and stepper motors

1) Microcontroller 8951:-

It is a low-power,high-performance CMOS 8-bit microcontroller with 64k bytes of flash programmable and Erasable Read Only Memory (PEROM).The device is manufactured using PHILIPS high-density nonvolatile memory technology and is compatible with the MCS-51 instruction set and pin-out.The on-chip flash allows the program memory to be reprogrammed in-system or by a conventional nonvolatile memory programmer.By combining a versatile 8-bit CPU with flash on a monolithic chip,the PHILIPS 89V51 is apowerful microcomputer,which provides a highly flexible and cost effective solution so many embedded control applications.

                   In this project microcontroller will do 2 things,firstly microcontroller reads signal from ADC and send it to computer and recives control signal from computer and send it to control relays.

2)Sensor section:-

Sensor section consist of following sensor :-

1)temp.sensor :-it convert the change in temp. into change in voltage and output of it is connect to IN0 input of ADC .

2)viscosity sensor:-it convert the change in viscosity into change in voltage and output of it is connect to IN1 input of ADC.

3)level sensor:-it convert the change in level into change in voltage and output of it is connect to IN2 input of ADC.

3)Swithes:-There are 1 key used.these are normally open push  button.When button is normal i.e.not pressed then it gives logic 1.And when button is pressed then it gives logic 0.This switch is used to reset the microcontroller.

4)Power supply:-Step down transformer converts 230V AC into +5V DC. +5V is required for microcontroller 89v51 board and LED display.

+12v are required for relay driver circuit and stepper motor.

5)LED:-

LED display panel is used here as a output device.When there no rainfall detected by sensors then GREEN led will glow and circuit will normally work.

7)Relay driver:-

Output of microcontroller is not sufficient to drive the stepper motor directly.Therefore to drive the stepper motors we are using relay driver.

                           PROPOSED WORK

 Hardware Implementation

          1)Microcontroller 8951

           2)temp.sensor

           3)level sensor

           4)viscosity sensor

           5)Relay Driver

           6)Micro switch.

           7)LED’s

           8)Transformer

           9)Resisters,capacitors,Diodes etc.

          10)Stepper motors