User's Manual

CHAPTer 7 o DATA COLLECTION

Data Collection SetupFigure 7.1 –

Step 1: Congure Data Storage

The Interval (Bin) Size option species the interval of time over which trac

variables like volume, speed, occupancy and classication are aggregated. This

type of data is called interval data. The minimum interval allowed is ve seconds.

By default, the checkbox next to Memory Overwrite is checked. This means that

your study will run indenitely and repeatedly overwrite the ash memory

onboard storage. This means that in order to not lose collected data, you must

download it to a log on your computer before it is overwrien.

Alternatively, you can uncheck the Memory Overwrite checkbox. In this case,

the study will run only until the sensor’s ash memory has been lled with

interval data.

Note

Once the ash memory buer is full, it must be erased before it can be

reused. Before you erase the stored data, you will want to download the

data to a log le on your computer.

The third line under Step 1 displays the Flash Storage Time. This shows the

duration of interval data that a full ash buer holds, calculated for you as

a number of days and hours. Because of the way ash memory is managed,

the Flash Storage Time will vary based on whether or not you have Memory

Overwrite enabled.