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Learning Objectives

After reading this article, you’ll be able to:

  • Define PointGrab XOVIS installation location, taking into account the detection area compared to ceiling height and the area you want to cover

Create sensor layout

As described in Prepare your sensor plan, you’ll need following elements in order to define where to place each sensor:

  • ceiling height

  • ceiling material + information on ceiling heights

  • latest floor plan with latest furniture drawings

  • superposition Reflected Ceiling Plan (RCP) file

Tip

Best practices recap

  • Detection area is measured on floor level: any person standing on the edge of the detection area might not get picked up.

    • Avoid setting up count area at the edge of the detection area.

    • It's a best practice to include 1.5.m coverage on all sides

  • For meeting rooms: Because of the above mentioned edge of the detection area & because you never know how a room might be used in future, it's best practice that the detection area should cover the whole room, even if that means adding an additional sensor to the room

  • Specific for Pointgrab headcount sensors: 

    • If more than 1 sensor is used to cover an area, these will need to be "stitched" together in the software. Allow an overlap of 0.5m in the detection area of 2 sensors that lie side-by-side and need to be stitched.

    • Traffic line: 1 single sensor for 1 traffic line (this takes into account for CPU and calculations, otherwise accuracy will drop)

    • 1 single sensor can take up to 10 count areas (remember this when you set up headcount sensors to track workplaces)

Define the Count Areas on your floor

Define the areas you want to monitor. We call these areas “Count Areas”. Do you want to know how many people are using a (closed) room at any given time? Or are you using PointGrab devices to track the occupancy of multiple desks?

Note

1 PointGrab device can only cover a maximum of 10 desks/workplace areas

(Configure more than 10 count areas in the PointGrab™ Platform, and the device will appear offline.)

  • type of ceiling (e.g. suspended ceiling)

  • ceiling pictures / videos

  • dimension (horizontal) of the passage

Define the Detection Area of each sensor

A PointGrab XOVIS device is always placed in the middle of its Detection Area, which is a rectangle of which the dimensions (length-width) on the ground are dependent on the installation height/ceiling height.

Info

For optimal performance, the PointGrab™ XOVIS™ installation height above the floor should be between 2.15m (7.02ft) and 4.5m (14.76ft).

For an installation height of 3.65 meters or higher, the Detection Area is fixed (see table below depending on sensor type).

2m and 6m.

The following table shows the Detection Area size for different sensor heights:

The detection area of one sensor can be calculated with the following formula:

[𝑤,𝑙]=(𝑍−0.3)∗ [2.38, 1.678]

where Z = sensor height in meters.

For an installation height of 3.65 meters (12ft) or higher, the Detection Area is fixed at 7.98m x 6.03m (26.18 ft x 19.78 ft). The following table shows the Detection Area size for different sensor heights:

The detection area of one sensor can be calculated with the following formula:

[𝑤,𝑙]=(𝑍−1)∗ [4.83, 2.8]

where Z = sensor height in meters.

For an installation height of 2.9 meters (9ft) or higher, the Detection Area is fixed at 9.18m x 5.32m (30.11 ft x 17.45 ft). The following table shows the Detection Area size for different sensor heights:

Expand
titlePointgrab v1 (shipped in white package)

Installation Height

Detection Area

2.3m (7.54ft)

4.76m x 3.36m (15.62ft. x 11.01ft.)

2.5m (8 ft.)

5.24m x 3.69m (17.18ft. x12.11ft.)

2.75m (9 ft.)

5.84m x 4.11m (19.13ft. x 13.49ft.)

3.65 m (12 ft.) ≤ 4.5 m (14.76 ft.)

7.97m x 6.03m (26.16ft. x 19.78ft.)

Expand
titlePointgrab v2 (every new project starting 2023 will include v2 sensor; new package design is colored red)

Installation Height

Detection Area

2.15m (7.05ft)

5.55m x 3.22m (18.22ft. x 10.56ft.)

2.5m (8ft)

7.25m x 4.2m (23.77ft. x 13.78ft.)

2.75m (9ft)

8.45m x 4.9m (27.73ft. x 16.08ft.)

2.9 m (9ft.) ≤ 4.5 m (14.76 ft.)

9.18m x 5.32m (30.11ft. x 17.45ft.)

Combine Count Areas and Detection Areas on your Sensor Plan

Now that you have defined which areas you want to track occupancy on (count areas), and know the detection areas of the sensors, you can define how many PointGrab CogniPoint™ sensor devices are needed.

Info

The number and placements of the sensors that you deploy should ensure that your count areas are completely contained within the sensors’ detection areas.

Make sure you visit Prepare your sensor plan for more information and examples.
XOVIS Detection Area size for sensor heights 2.2m-3.5m (Xovis sensors PC2-SE-UL​ and PC2-RE-UL​)

​IN SQUARE METERS

XOVIS PC2-SE/RE-UL​

​

​IN SQUARE FEET

XOVIS PC2-SE/RE-UL​

Height[m]​

L[m]​

W[m]​

A[m²]​

​

ht[ft]​

L[ft]​

W[ft]​

A[ft²]​

2.20​

1.20​

1.00​

1.20​

​

7.22​

3.94​

3.28​

12.92​

2.30​

1.68​

1.38​

2.30​

​

7.55​

5.50​

4.51​

24.79​

2.40​

2.15​

1.75​

3.76​

​

7.87​

7.05​

5.74​

40.50​

2.50​

2.63​

2.13​

5.58​

​

8.20​

8.61​

6.97​

60.05​

2.60​

3.10​

2.50​

7.75​

​

8.53​

10.17​

8.20​

83.43​

2.70​

3.58​

2.88​

10.28​

​

8.86​

11.73​

9.43​

110.64​

2.80​

4.05​

3.25​

13.16​

​

9.19​

13.29​

10.66​

141.69​

2.90​

4.53​

3.63​

16.40​

​

9.51​

14.85​

11.89​

176.58​

3.00​

5.00​

4.00​

20.00​

​

9.84​

16.41​

13.12​

215.30​

3.10​

5.48​

4.38​

23.95​

​

10.17​

17.96​

14.35​

257.85​

3.20​

5.95​

4.75​

28.26​

​

10.50​

19.52​

15.58​

304.24​

3.30​

6.43​

5.13​

32.93​

​

10.83​

21.08​

16.82​

354.47​

3.40​

6.90​

5.50​

37.95​

​

11.15​

22.64​

18.05​

408.53​

3.50​

7.00​

5.88​

41.13​

​

11.48​

22.97​

19.28​

442.71​

Spacewell employees can request access to Xovis Hub through the Hardware team.

In Hub > Tools > Coverage Calculator, you’ll find more information on Detection Area, select device type PC2SE-UL​:

image-20240808-155429.pngImage Added

Expand
titleXOVIS Detection Area size for sensor heights 3.5m-6m (Xovis sensors PC2-SE-L​ and PC2-RE-L​)

​IN SQUARE METERS

XOVIS PC2-SE/RE-L​

​

​IN SQUARE FEET

XOVIS PC2-SE/RE-L​

Height[m]​

L[m]​

W[m]​

A[m²]​

​

ht[ft]​

L[ft]​

W[ft]​

A[ft²]​

3.50​

5.63

3.19​

17.93

​

11.48​

​

3.60​

6.00

3.40

20.40

3.70​

6.38

3.61

23.03

3.80​

6.75

3.83

25.82

3.90​

7.13

4.04

28.77

4.00​

7.50

4.25

31.88

4.50

9.38

5.31

49.81

5.00

11.00

6.38

70.13

5.50​

11.00

7.44

81.82

6.00​

11.00

8.00

88.00

Spacewell employees can request access to Xovis Hub through the Hardware team.

In Hub > Tools > Coverage Calculator, you’ll find more information on Detection Area, select device type PC2SE-L:

image-20240808-155253.pngImage Added

Define sensor installation location

The installation location of the CogniPoint™ XOVIS sensor devices is linked to the height of the ceiling installation (usually: ceiling) height and dependent of any obstructions of large items (e.g. a projector hanging from the ceilingfor example an HVAC duct or light fixture).

Determine the sensor's precise location according to the layout defined in the sensor layout process and the resulting floor plan (Sensor Plan). Sensors are displayed as circular icons on the floor plan, with an arrow pointing in their view direction.

Image Removed

For

workplaces headcount monitoring, viewing direction is important in order to get the correct data on which individual workplace/area is occupied or not. Remember: 1 PointGrab device can only cover a maximum of 10 workplace areas.In meeting rooms, viewing direction is important to make sure to cover the whole room

optimal performance in tracking hallway traffic with your Xovis PC2SE sensor, it's best to install it with the longer side facing the walls:

  • Field of View: The PC2SE has a wider field of view (FoV) along its longer side (45° compared to 25° along the shorter side). By positioning it this way, you capture a larger area of the hallway, ensuring better detection of people entering or exiting through the door.

  • Target Size and Accuracy: In a long hallway, people walking towards the sensor present a smaller target profile compared to walking parallel to it. The wider FoV along the longer side helps compensate for this smaller target size, improving detection accuracy.

Next steps

Make sure to check PointGrab Xovis hardware & network requirements prior to PointGrab Xovis installation.

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