Using Data Logging and Control Flashcards
Describe the control system?
A computer will receive the inputs from the sensors
A control program in the processor analyses the data and send signal to actuators that control a motor, switch etc.
Sensors measure quantities such as…
- Temperature
- Light
- Sound
- Weight
- Stress
- Movement
What is a Feedback system?
Control system where the output actions affect the input data, which affect the output actions and so on…
Give an example of a control system?
Automatic Doors
- Start
- Person approaches the door
- Sensor detect person
- Actuator opens door
- Sensors detect no person
- Actuator closes door
- Back to start
What is a robot?
Machine that can be programmed to perform a sequence of actions.
What can robots carry out?
Repetitive jobs perfectly every time
Dangerous Jobs
Heavy Jobs
Precision Jobs
Industrial robots can…
Assemble Parts Spray Paint Handle machine tools Turn Objects Lift and Carry Parts
What is a simulation?
Is a model of a real system
Advantages of using computer control systems
- Computers do not get tired or ill
- Every job is done with exactly the same precision
- They will never go one strike
What are the disadvantages of computer control systems
- The computer can only do what it is programmed to do
- If there is a mistake in the programme this will be repeated until spotted
What are the advantages of using computer data logging systems?
- Readings can be accurate
- Readings can be taken 24 hrs a day
- Error Free
What are the Disadvantages of using computer data logging systems?
- Computers can not easily respond to change
- Data loggers will only be log what they are programmed to Log
