Coverage map

A person stands still in each cell of an 8 × 6 m grid in turn, to map where in the room a single wall-mounted A212 sensor detects them. This page shows how the Presence Tracking Wall Mount application was tested in this scenario, and the results.

Presence detection

Detection rate 98.4% of all visits to a cell Fully covered cells 46/ 48 cells detected on every visit

By grid cell

Each cell: the share of the person's visits to it in which they were detected. The sensor is on the left, looking right; see the top view under How we tested.

Metrics and definitions

Metric	Definition	Basis	Result
Presence detection A person in the area is detected and classified as a human.
Detection rate	Share of all visits to a grid cell in which the person was detected. A visit to a cell counts as detected if, in at least 50% of its radar frames, the person was detected inside that cell.	192 visits	98.4%
Fully covered cells	Grid cells in which every visit was detected. A visit to a cell counts as detected if, in at least 50% of its radar frames, the person was detected inside that cell.	48 cells	46 / 48

How we tested

Top view

Side view

Legend

• A212 sensor
• Detection area

Setup

Test grid	8 × 6 cells of 1 × 1 m (8 m from the sensor, 6 m wide), marked on the floor; the sensor centred on its near edge.
Hardware	XE212 (A2 evaluation kit)
Ground truth	The cell the person stands in, logged by the operator as they reach it.
Software	Wall Mount Presence Tracking reference application in Exploration Tool v8.0.0. Default configuration (Exploration Tool preset) with the below modifications:
Sensor installation	1.5 m above the floor, angled horizontally.
Detection area	−3 to 3 m in x, 0 to 8 m in y; −80° to 80° azimuth, −30° to 30° elevation.

Test procedure

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1. Walk to startThe person walks from the center of the grid to its first cell, in one of the far corners.
2. Stand still20 s standing still at the centre of the cell, facing the sensor's wall (negative y direction).
3. Next cellOn to a neighbouring cell, and so on through the grid, until all 48 cells are visited.
4. LeaveFrom the last cell, the person walks out of the grid.
5. RepeatFour runs in all: from each far corner, setting off along each of its two edges.

Run the same test XE212 (A2 evaluation kit)·Wall Mount Presence Tracking reference application in Exploration Tool

These are the results of this test, not a performance guarantee. In another room, or with another sensor mount, configuration or scenario, results may differ.