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Finding objects

Finding objects. Prepared by: Laial Al Jeans Mais Dabous Supervised by: A.Jammal Kharoshah. Introduction. For our execution to our graduation project in this semester we tried to implement its idea successfully and achieving our purposes.

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Finding objects

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  1. Finding objects

  2. Prepared by: Laial Al Jeans Mais Dabous Supervised by: A.Jammal Kharoshah

  3. Introduction For our execution to our graduation project in this semester we tried to implement its idea successfully and achieving our purposes. Our project “Finding Objects” helps user by reducing the time and work for looking for his object such as " bags, keys, remotes, mobiles and jewelries etc…."

  4. Project's Targets • We hope to execute successful project that supports our knowledge and skills as : 1-having the ability of determining problems , solving them and replacing part by another . 2-Learning programming the pic 3- Thinking about points can be applied on our project to develop and support it.

  5. We want to work on a realistic idea that helps people solving a problem as one that we studied because we know that an engineer is a problem solver . But How

  6. Press three keys only Your object will produce sound directly

  7. Our project in block diagram : Hand’s devise Object’s devise Channel Now we will see hall project’s datasheet

  8. max Pic 16F877 Channel max Pic 16F877

  9. Press 2 buttons and ”*” Antenna RX Channel Private # to transferred to pic RX pic Comparison operation in pic The pic coded the # Are two codes equal? Pic send the code to TX yes No Buzzer will Produce sound TX antenna Nothing happened

  10. Transmitting Stage: max Pic 16F877

  11. In this stage the signal produced that represent pressed number is as shown here: This represents #(2)

  12. This represents # (1) This represents #(9)

  13. 1- Keypad: A keypad is a set of buttons arranged in a block which usually bear digits and other symbols but not a complete set of alphabetical letters. If it mostly contains numbers then it can also be called a numeric keypad.

  14. 2- Microcontroller (PIC): PIC is the IC which was developed to control devices, alleviating the load from the main CPU. in our project we use the PIC (16F877) in both transmitting and receiving stages

  15. 3- Radio Transmitter : In our project we use “Radio Transmitter Module” with SAW Resonator and external antenna.

  16. 4-Voltage regulator: A device or circuit that maintains a load voltage nearly constant over a range of variations of input voltage and load current. Voltage regulators are used wherever the unregulated voltage would vary more than can be tolerated by the electrical equipment using that voltage .

  17. 5-Antenna: An antenna is a transducer designed to electromagnetic waves receiver or transmitter . In other words, antennas convert electromagnetic waves into electrical currents and vice versa. Antennas are used in systems such as radio ,television broadcasting, wireless LAN, radar,……..etc. In our project we use this antenna in both stages

  18. Receiving stage: RX max Pic 16F877

  19. In this stage the received signals that represent pressed number is as shown here: • This represents # (2)

  20. This represents # (9) after sending and receiving before entering the pic

  21. This picture represents the signal after arriving the antenna at receiving stage

  22. 2-Buzzer: It is a piece of the issuance of electronic sound when fed a particular effort, and can make the sound of the piece on a continuous basis and when fed a continuing effort, and can make the sound and sporadic efforts at feeding hesitant. Effort fed by the piece comes from the reception after the code to verify the authenticity of the control of the Service Siren by the sound of the thing we're looking for.

  23. During hardware design for the project some problems faced us and we summarised them as below :1-Type of pic we choose first wasn’t suitable ,so we convert it.2-Unmatched between decoder and pic ,so we replace decoder by another pic.3-Fail of wireless system for long distances between two circuits .4-We build our system on a plate but without response and its photo appear below

  24. Future look for our project:In our project these points can be applied to develop it:1-Try to accurate wireless design.2-Entering idea of using LCD to support secure side for the project.

  25. Economic part: • The market needs this kind of device. This device if it’s being applied will be widely used in air port, houses, companies and other places in order to find something needed quickly. • In our project we built this system from cheap and simple component which were mentioned above, in order to encourage people own it in general the total cost of our project was about $70.

  26. Conclusion: In this course we follow the steps one by one to build successful design as we plane from the last semester. Although a lot of problems faced us but that made us have more and more knowledge about designing, dealing with tools, having an ability to discover reasons of problems and finally evaluating our work. We hope we can achieved that goals

  27. Thank You

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