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Bachelor's Degree in Telecommunications Systems and in Network Engineering |
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Chapter 3 problems |
- D3.17 - |
Shower stall automation (μC - C) |
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1. Specifications
In a gym and fitness centre, there are some shower stalls like the one represented in Fig. 1 that have to be automated to generate cycles of contrasting hot (48 °C), warm (26°C) and cold (4°C) water sprays simply clicking a single start push button (SB). After clicking the SB, initially warm water flows for 50 s (H = C = ‘1’), then hot water (H = ‘1’, C = ‘0’) for 10 s, and thirdly cold water (H = ‘0’, C = ‘1’) for 20 s, and this cycle is repeated another time; finally, the system goes idle (H = C = ‘0’) to wait for another user service. During the operation the R_LED turns on and the water solenoid valve (SV) is on. Let us design the digital control system connected to the valves’ power driver using a PIC18F4520 microcontroller.
The same project designed using hardware is stated in D2.17.
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| Fig 1. Symbol for the proposed entity. |
Organise the planning using design phases and design steps.
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