CHAPTER - 1
In this busy and competition world we cannot monitoring our elders (aged people) and patients continuously even though we have so much of love on them .By using advancements in present technologies we are developing this project to save time and user friendly system . The user has to press the respective button to get his service, and then the predefined message will be played through speaker. In general, most of the patients forget to take the appropriate medical course at appropriate times. There may be chances that they remember to take the pills at regular times but forget the pill which has to be taken at that particular time. This is a big problem and it is also difficult to doctors to monitor patients always. And also, mostly in the hospitals, it is not an easy and available service to employ a nurse to a single patient exclusively. To avoid these problems, we have implemented this project which can remind the patient about the intake of medicines at regular time intervals and also sends the information to the doctor about the patient if the temperature or the heartbeat exceeds the normal set point. This project is designed mainly for patients and old aged people. The project can be seen more clearly in two different modules- medicine intake informer and voice guider. The medicine intake informer consists of RTC (DS1307), buzzer and 16X2 LCD display. The system continuously reads the time from RTC and compares this time with the already time and if these two times match, the system immediately alerts the buzzer for a predefined time and displays the name of the medicine, to be taken by the patient, on the LCD. The voice guider consists of voice playback APR9600, speaker and IR receiver. The user will be provided with an ordinary IR TV remote. If the user is unable to do the things by himself or requires any immediate help, he can press any of the predefined keys in the remote. The IR receiver receives the IR signals from the transmitter and passes this data to the voice playback. The message corresponding to the pressed number will be announced and can be heard through the speaker. If the patient or the old person is unable to ask the things like water, fruits etc directly, he can press the defined button in the remote. Then the controller receives this input from IR receiver and the message related to the number pressed will be heard in the form of voice from the speaker. Thus, the patient can get the required help immediately. 1.1. Basics of Embedded Systems
An embedded system is a computer system designed to perform one or a few dedicated functions often with real-time computing constraints. It is embedded as part of a complete device often including hardware and mechanical parts.
Embedded systems control many devices in common use today. Embedded systems are controlled by one or more main processing cores that are typically either microcontrollers or digital signal processors. The key characteristic, however, is being dedicated to handle a particular task, which may require very powerful processors. Physically embedded systems range from portable devices such as digital watches and MP3 players, to large stationary installations like traffic lights, factory controllers, or the systems controlling nuclear power plants. Complexity varies from low, with a single microcontroller chip, to very high with multiple units, peripherals and networks.
Fig-1: Embedded Systems
Processors: Processors are the ones which performs some specific task or operation. These are divided in to several types like: 1. Digital Signal Processors.
2. Application Specific Integrated Circuits.
3. Micro Processors.
4. Micro Controllers.
Digital Signal Processors:
This is a one which performs scientific and mathematical...
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