DESIGN AND CONSTRUCTION OF A HEADLAMP OPERATED GATE OPENING SYSTEM

ABSTRACT

This project work deals on the design and implemental of a headlamp operated gate opening system capable of operating a gate/door using the particular headlamp only. This system tends to climate the thresh associated with manual, opening and closing of gates and boosts the security of the entity this electric system is realized in two functional units the transmitter and the receiver. The transmitter is realized using a timed radio frequency transmitter module alongside a laser, diode (the headlamp) the receiver is configured using a tuned, radio frequency receiver module which is used to power an optical light sensor circuit. The output of the sensor is conditioned by Quad -2- input Schmitt trigger NAND gate 7413132 which generates a control logic that is used to bias an NPN bipolar junction transistor. This driver energized an electromagnetic relay that switches/actuates, the prime-mover that pulls the door lover (once the transmitter button is pressed, it transmits an RF signal to the receiver installed at the gate and switches on the laser diode that function as the light source. At the receiving end, the output signal of the TRF receiver supplies power to the optical light detector circuit that energies the relay on receiving visible light from the transmitter. The gate/door opens, and closes on its own even if the light goes off this system, is rebost and rugged and will sell like a German burger if appropriately commercialized.

TABLE OF CONTENTS

Title page       --         --         --         --         ----      --         --         --         --         i

Approval page          --         --         --         --         ----      --         --         --         ii

Dedication                 --         --         --         --         ----      --         --         --         iii

Acknowledgement   --         --         --         --         --         --         --         --         iv

Abstract         --         --         --         --         --         --         --         --         --         v

Table of contents                 --         --         ---        --         --         --         --         vi

Chapter one

1.1.1. Background of the study      --         --         ---        --         --         --         1

1.1.2. Problem statement     --         --         --         --         --         --         --         2

1.1.3. Aims and objectives             --         --         --         --         --         --         3

1.1.4. Significant of the project     --        --         --         --         --         --         4

1.1.5. Scopes of the study   --         --         --         --         --         --         --         5

1.1.6. Project report organization  --         --         --         --         --         --         5

Chapter two

2.1       Literature review      --         --         ---        --         --         --         --         7

2.1.1. Review and the Analysis of the existing system  --         --         --         --        

2.1.2   Historical development of the project      --         ---        --         --         9

2.1.2   Areas of application of the project                       --         --         --         --         11

2.1.3      Areas of applications of the project         - -            - -            - -            - -            - -            18

2.1.4 Tuned radio frequency (TRF) transmitter and receiver       - - -         - -            - -            18

2.2          System component description      --         --         ---        --         --         20

2.3       Resistor          --         --         --         --         --         --         --         --         21

2.4    Different symbols of resistors         --             --             ---           --             --             --             24

2.5   Determination of the value of a resistor       --             -- -          - -- -       - -            5

2.6 Capacitors           --         --         --         --         --         --         --         --         --                    

2.7 Transformers --       --       --       --       ---     --       --       --       30

2.8 Diode       --         --         --         --         --         --         --         --         --         31

2.9 Types of diode   --         --         --         --         --         ---        --         --        32

2.10  IC linear voltage regulator    --         --         ---        --         --         --        33

2.11 Transistor static switch and electromagnetic relay                        --         --        37

2.12    The optical light sensor using LDR           --         --         --         --         41

2.13 Design considerations                        --         --         --         --         --         --         44

2.14 Applications     --         --         --         --         --         --         --         --         45

2.15    Servomotor   --         --         --         --         --         --         --         --        47

2.16 Device without feedback        --         --         --         --         --         --         48

Chapter three

3.1 Description of the system building blocks                            49

3.2 Block diagram development into working circuit                50

3.3 System design specifications                                                   52

3.4 The principle of operation of the system                               53

Chapter four

Implementation, testing and result                                                            57

4.1 Implementation                                                                          57

4.2 Testing                                                                                                     58

4.3 Result                                                                                                      59

4.4 Bill of engineering quality