Freq counter

FREQUENCY COUNTER
FREQ COUNTER

1. FREQUENCY COUNTER BORAD PRAFUL V.(140213111002) GILATAR GHANSHYAM T .(140213111006) GOHEL JAYDEV K .(140213111007)

2. INTRODUCTION The object of this project is to determine and display the frequency of the input power. This is done by using 8051 microcontroller. Most frequency counters work by using a [counter] which accumulates the number of events occurring within a specific period of time. After a preset period (1 second, for example), the value in the counter is transferred to a display and the counter is reset to zero. If the event being measured repeats itself with sufficient stability and the frequency is considerably lower than that of the clock oscillator being used, the resolution of the measurement can be greatly improved by measuring the time required for an entire number of cycles, rather than counting the number of entire cycles observed for a pre-set duration.

3. BLOCK DIAGRAM

4. CIRCUIT DIAGRAM

5. WORKING The object of this project is to determine and display the frequency of the input power. This is done by using 8051 microcontroller. The circuit of our designed frequency meter includes 8051 microcontroller, Liquid Crystal Display(LCD),Cathode Ray Oscilloscope(CRO) and variable power supply unit. The CRO is used to display the frequency waveform of the given input power. Based on the source code given to the 8051 microcontroller it detects the frequency value and displays that value with the help of the LCD employed. Depending on the power supply the value of the frequency on the LCD changes. Most frequency counters work by using a [counter] which accumulates the number of events occurring within a specific period of time. After a preset period (1 second, for example), the value in the counter is transferred to a display and the counter is reset to zero. If the event being measured repeats itself with sufficient stability and the frequency is considerably lower than that of the clock oscillator being used, the resolution of the measurement can be greatly improved by measuring the time required for an entire number of cycles, rather than counting the number of entire cycles observed for a pre-set duration. Frequency counters are commonly used in laboratories, factories, and field environments to provide direct frequency measurements of various devices. The most common applications for frequency counters are measurement and characterization of oscillator and transmitter frequencies.

6. APPLICATION IN CRO IN FUNCTION GENERATOR IN LABORATRIES USED AS A COUNTER

7. THANK YOU