Car engine system question

• Inputs : [8marks]

  • Target temperature (1 – AO 2.1) integer / floating point (1 – AO 3.1).
  • Wheel movement (1 – AO 2.1) Boolean (1 – AO 3.1).
  • Engine running (1 – AO 2.1) Boolean (1 – AO 3.1).
  • Internal temperature (1 – AO 2.1) integer / floating point (1 – AO 3.1).
  • External temperature (1 – AO 2.1) integer / floating point (1 – AO 3.1).
  • External light level (1 – AO 2.1) integer / floating point (1 – AO 3.1).
  • Heating on (1 – AO 2.1) Boolean (1 – AO 3.1).
  • Air conditioning on (1 – AO 2.1) Boolean (1 – AO 3.1).
  • Gears engaged (1 – AO 2.1) Boolean (1 – AO 3.1)
• Outputs: [2marks]

  • Start engine (1)
  • stop engine (1)
  • signal to dashboard display (1)
• code for engine system: [8 marks]

  • Use of endless loop while ignition is turned on (1).
  • If external temp < target then override (1). ·
  • If external light < target then override (1). ·
  • If internal temperature < set temperature and heater on then override (1).
  • If internal temperature > set temperature and air conditioning on then override (1). ·
  • If battery output < target then override (1). ·
  • If wheels not moving and gears not engaged and not override then stop engine (1).
  • If override and engine not running then start engine (1).