7.1.1 - Discuss a range of control systems. Flashcards
What is a sensor?
A sensor is a device that detects or measures a physical property and records, indicates, or responds to it. Examples include digital temperature sensors, weight sensors, and light sensors.
What is an actuator?
An actuator is a device that moves or controls a mechanism by converting a control signal into mechanical action, such as opening bus doors or controlling car windows.
What is a microprocessor?
A microprocessor is an integrated circuit that contains all the functions of a CPU, used in many control systems.
What is a microcontroller?
A microcontroller is a compact integrated circuit designed to govern a specific operation in an embedded system, combining a microprocessor, ROM, RAM, and I/Os on a single chip.
What is a transducer?
A transducer is a device that converts one form of energy into another. Both sensors and actuators are examples of transducers.
What is a control system?
A control system is a device or set of devices that manage, command, direct, or regulate the behavior of other devices or systems. Inputs are processed to generate a desired output.
What is an example of a control system in taxis?
A taxi meter is a control system where inputs like time and distance are processed to calculate the price, which is displayed until the passenger pays.
How does an automatic door control system work?
An automatic door uses sensors like motion or pressure sensors to detect people. It opens the door when a person is detected and closes it after a certain time if no one is detected.
What is the input, process, and output of a taxi meter control system?
Input: Timer, sensor, or GPS. Process: Calculates time/distance and price. Output: Displays price.
What is the input, process, and output of an elevator control system?
Input: Button, pressure sensor, weight sensor. Process: Checks if sensors are triggered and navigates to selected floor. Output: Activates lift motor.
What is the input, process, and output of an automatic door control system?
Input: Motion, pressure plate, or sound sensor. Process: If person detected, open door. Output: Opens/closes the door.
What is the input, process, and output of a heating system control?
Input: Temperature sensor, thermostat. Process: Turns on heater/compressor based on desired temperature. Output: Heats or cools the room.
What is the input, process, and output of a washing machine control system?
Input: Water level, time, clothes weight. Process: Program controls water flow, motor, and temperature. Output: Spins drum, locks door, washes clothes.
What is the input, process, and output of a GPS system?
Input: GPS signal, touchscreen. Process: Triangulation and location calculation. Output: Displays location on map.
What is the input, process, and output of a traffic light control system?
Input: Button, motion sensor, or magnetic sensor. Process: Checks traffic and pedestrian signals. Output: Changes traffic light color.
