Data+logging

= DATA LOGGING Mehnaaz Asad =

Here is an in-depth presentation about Data Logging:



[|Activity summarising Data Logging]

[|Data Logging Test]

This is a video of Data Logging being used to collect and record scientific data from rainforests:

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PRESENTATION DATA LOGGING - Zeina Al Idelbi

It is the process of using a computer to collect data through sensors, analyze the data and save and output the results.
 * What is Data Logging? **

Data logging may be commonly used in scientific experiments and in monitoring systems where there is the need to collect information faster than a human can possibly collect and in cases where accuracy is essential


 * Examples of the types of information a data logging system can collect include: **

Temperatures sound frequencies Vibrations times light intensities electrical currents pressure

The basic equipment needed for computer-based measurement consists of sensors, a data-logger and a computer

When the computer is used for measurement, the tasks it performs can be summarized as follows:

Collect data from external sensors. Store data in computer memory. Display data in graphical form. Process data so to perform calculations.

When the computer is used the tasks that can be preformed include: Continuous recording -The rapid repetition of measurements (hundreds of values per second) can produce such packing of data when plotted on the screen that it simulates the continuous recording of results.

Simultaneous recording -Measurements from several sensors may be collected simultaneously (the sensors may be of similar or different types)

Period logging Data may be collected over a period of hours or days

Remote Logging -Data may be collected independently from the computer using a data-logger .Data logger may be sited in locations which are not convenient for computers. This is well-suited to longer term experiments.

Delay -A data logger may be set up so that it waits for a specified time before beginning to log data.


 * The Data Logger **

The term "logging" describes the measurement, collection and storage of information from sensors. A data-logger contains an electrical circuit which acts as a connection between the sensors and the computer. Its first purpose is to ensure that the voltage from the sensors is compatible with the computer to allow safe connection and a useful range of measurement. The data- logger also provides several additional functions:

It can be programmed to collect data automatically. It contains its own memory for storing data It contains circuits for timing and measuring voltage


 * Advantages **
 * Improves the accuracy
 * Collects information from scientific experiments and monitoring systems faster than human
 * Displays the results in a graphical form
 * Prints out and analyses the results
 * reeduces the error rate of the data processing
 * Remote logging enables to calculate the experiments from remote locations that are inaccesible by humans and many computers.
 * Data can be stored on a disc for a future use
 * Ease of use / display on a screen / drafts and analysis of the results
 * Network connectivity and online analysis
 * Data can be shared and published anywhere on the internet


 * Disadvantages **
 * Storing data logging systems in the databases is very complex and hard to manage
 * It is hard to implement the data logging system/ configure it from the scratch
 * Tight integration with measurement hardware. Software has to be designed in order to work with the hardware.
 * High performance computers are needed in order to analyze the data