data logging and control systems

data logging and control systems

1. examples of data logging

   • weather stations
   • traffic flow systems

2. these systems work 24 hours a day 7 days a week and only stop for maintenance work

3. where they can be used

   • they can be used in almost any location
   • normally used in areas humans cannot operate saftely
   • e.g. the bottom of the sea or inside a nuclear reactor

4. data logging&control systems used for

   • can be used to provide feedback to control systems that operate other devices
   • e.g.greenhouse might have a system to monitor temperature that also controls heaters or ventilation

5. data logging examples

   • in a hospital
     • patients will be monitored to unsure that they are in a stable state
     • to do that their breathing rate will be monitored and the level of oxygen measured. Alarms will be triggered if their oxygen level goes below a certain amount
   • water companies
     • sensors take measurements of the water
     • special software(data logging software) takes the data and analyses it
   • racing cars
     • digital electronic dashboards are used inside cars. they display data collected by the sensors
     • outout alarms can be set to alert the driver when certain conditions have been met

6. definitions

   • data logging;recording data over time by using sensors
   • feedback;where the output from the system influences what is put in the system
   • sensor; a device that meausres physical quantity

7. acronyms

   • ADC; analog to digital converter
   • DAC: digital to analogue converter