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Reverse engineering presentation - Digital Alarm Clock
- 2. Introduction Description of the product 17.5 x 10.7 x 5.8 cm (Dimensions) 181 g (Weight) Corded power source Power requirement: 100-240V AC
- 3. Introduction Reasons for choosing this product Great potential for improvement Extremely high availability Low cost Possible business ventures
- 4. Introduction How does it meet the criteria of the reverse engineering topic? It is reversible Useful for visionary disabilities as well as the population with hearing difficulties Contains a sufficient amount of components
- 5. Introduction Goals for performing the reverse engineering study Describe the background of the Digital Alarm Clock Dissemble the product Explain and describe each different component Relate the suggested improvements to the theoretical explanation of the components
- 6. Background Product was initially derived from two inventions by D.E. Protzmann and Josef Pallweber. Satisfies the functional need to be alarmed at a specific time with convenience Targeted towards the majority of the population in specific the elderly and those with disabilities in vision and hearing The model at hand is CR1388B, Radio (AM/FM), LED display, Curved edges for easier grip to be moved
- 7. Evaluation Methods Procedures used to evaluate the product Researching Choosing Developing
- 9. Application details Casing & Buttons Front View Top View
- 10. Application details Casing & Buttons cont. Bottom View
- 11. Application details The Power System AC Adapter (outside)
- 12. AC Adapter (inside) 1. Conductors 2. Primary & Secondary Coils 3. Rectifier Bridge 4. Smoothing Capacitor Application details The Power System
- 13. AC Adapter (inside) 1. Conductors (prongs & wires) 2. Primary & Secondary Coils 3. Rectifier Bridge 4. Smoothing Capacitor Application details The Power System cont.
- 14. AC Adapter (How it works) Application details The Power System cont.
- 15. Application Details Inside the Clock
- 16. Application Details Inside the Clock
- 17. Application Details The Power Board
- 18. Applications Details Power Board > “Motherboard”
- 21. Application Details The Clock Quartz Crystal (Oscillator)
- 22. User control Application Details The Clock cont.
- 23. Application Details Radio 1. Transmitter 2.Receiver
- 24. Application details (Digital display screen) 1. Oscillator 2. Crystal 3. The display screen is often made of a liquid crystal display (LCD) or light emitting diode (LED).
- 25. Application details Speakers 1. Cone 2. Suspension 3. Magnet 4. Voice coil 5. Frame
- 26. Results Holistic understanding Specific information about different components 1. Power System 2. Speakers 3. LED
- 27. Future work Main idea- Voice recognition (take voice commands from the user and perform tasks like changing time, weather update, play radio and more) Other tweaks- Bigger screen and simple larger buttons(convenient for near-blind people) Louder speakers Vibrating Wrist-band that connects to the alarm-clock via Wi-Fi (for deaf people Solar-energy panel (lessen the usage of batteries)
- 28. Marketing Target audience Targeted advertising Price
- 30. Errors Grammar Style Spelling
- 31. Consistency Uniformity among the parts Layout
- 33. Distribution of tasks Intro: Dylan Background/Powerpoint: Ahmed Evaluation Methods: Ramy App details + Results: Sameh + Mahdi Future works: Shivam Marketing: Nicole Resources: Everyone References: Everyone Proof reading, consistency and coordination: Mohammed
- 34. References Churm, Thomas M. (September 26, 2010). “A Short History of Digital Clocks and Watches.” JosefPallweber.com. Http://www.iec.ch/worldplugs/typeA.htm (difference between current and voltage) https://learn.sparkfun.com/tutorials/voltage-current-resistance-and-ohms- law http://www.explainthatstuff.com/howtransistorswork.html
- 35. Questions?
Notes de l'éditeur
- This is the motherboard connected to the power board and the input circuit/keys circuit, we are going to explain how they work shortly. The motherboard processes signals and directs the power flow within the system. For example, when you set an alarm, you use the keys to make an input to the motherboard, the motherboard will give priority to the numbers you’re inputting and display them instead of time (so you will be able to see exactly what time you’re setting the alarm to), then when the alarm time is set, and the time comes, it allows the current to go to the speakers and then the speaker beeps for a number of times, if you click snooze, it stop for 5 minutes and so on. So the motherboard is the most intricate piece in the alarm clock.
- there is a quartz crystal “oscillator”,figure 12, that, when electricity is inducted to it, it oscillates at a particular frequency and produces a voltage. And, so the signal the quartz crystal generates is an accurate 60 Hz (oscillations/sec). And, because of this accuracy, one could acquire of a very precise division of time. In order to use this signal to measure time, one needs to separate these divisions into minutes and hours . Thus, the signal is picked up by an Integrated Circuit (IC) that works as a divider/counter. The counter serves to divide this frequency from 60 Hz per second to 1 Hz per second, and so we have accurate seconds that is also divided to have the minute counter and then divided again to create the hour counter.