Where: “PC”: frame header.
Counter = Counter IN - Counter OUT
Counter IN: number of people passing by from Left to Right
Counter OUT: number of people passing by from Right to Left
5.5.2.
Presence Detection Mode
In Presence Detection Mode the sensor counts the presence of people in front of the
TeraRanger Evo Swipe Plus
When streaming data using HTerm, the sensor goes on streaming frames that contain a
header of ”TT” followed by one distance represented by two bytes and one CRC byte.
“TT”
2 bytes
D1
2 bytes
CRC
1 byte
Once the sensor detects and validates a Presence Detection (e.g. ”person present for
more than x seconds”), the sensor outputs the following frame that contains this
additional information:
“PP”
2 bytes
“Presence”: 8 bytes
“Person moved away”: 17 bytes
“\n”
1 byte
Presence Detection counter
4 bytes
Where: “PP”: frame header
String message: “Presence” or “Person moved away”
New line character: \n (10 decimal / 0x0A hex)
Presence Detection meter counting people detected as present
5.5.3.
Engagement Trigger Mode
This mode provides users with specific data related to the engagement status,
depending on the operating mode.
When streaming data using HTerm, the sensor continues sending distance frames - see
above frames for each mode (BPTD and PD).
Once the sensor detects and validates an Engagement - meaning the detection of a
person standing below a range of “x” meters for more than “y” seconds - or a
Disengagement - meaning the person is no longer detected after “z” seconds - the
sensor outputs the following frames that contain this additional information:
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