7.1.4 - Explain the relationship between a sensor, the processor and an output transducer. Flashcards
What is the role of a sensor in a control system?
A sensor gathers analogue input data, such as temperature or motion, and converts it into digital data using an Analogue to Digital Converter (ADC) before sending it to the microprocessor.
How does the processor handle sensor data in control systems?
The processor receives digital data from sensors, compares it to pre-set values, and processes it. Based on this data, the processor decides if adjustments to the system are needed.
What is an output transducer, and how does it work?
An output transducer converts the digital signals from the processor back into physical actions, such as movement or heat. It may use a Digital to Analogue Converter (DAC) if required.
What is the role of feedback in control systems?
Feedback compares the system’s output to the input to ensure it is functioning correctly. If necessary, the system adjusts the output based on the feedback to maintain pre-set values.
What is the purpose of ADC and DAC in control systems?
An ADC (Analogue to Digital Converter) converts sensor input from analogue to digital data for processing, while a DAC (Digital to Analogue Converter) converts digital signals back to analogue for actuators.
What is the Input-Process-Output (IPO) model in control systems?
The IPO model involves sensors taking input, the processor handling the processing, and output transducers turning digital data into physical actions to control a system.
