Deployment Guide
1 min read
1. Pre-Guideline #
- The RSSI Scanner captures signal strength values from nearby BLE tags and beacons. Its deployment is simpler and more flexible compared to Angle of Arrival (AoA)–based BLE gateways.
- RSSI Scanners provide wider coverage, but with lower positioning accuracy than AoA-based systems.
- Each scanner offers a 360° scanning range with a typical coverage radius of 15–20 meters and can be easily mounted on room walls.
- For optimal performance, the minimum recommended room size is 6m × 6m.
- To achieve reliable positioning accuracy, at least 3 scanners should be installed per area. Increasing the number of scanners further improves accuracy and coverage.
2. Single RSSI-Scanner Deployment #
- When evaluating the RSSI Scanner, it is recommended to mount it on a wall that provides the best line-of-sight coverage of the entire room.
- Avoid placing the scanner near corners or metal surfaces, as this will cause high inaccuracy in the result.
- If another room on the opposite side of the wall also has an RSSI Scanner installed, the scanner in the current room should be positioned at least 5–6 meters away from that shared wall to minimize interference.
Note:
- In wireless applications a corner makes a reflector which reflects the signal coming at it.
- A single scanner is enough if you only need to know which room a tag is located in. However, to determine the exact direction or proximity of the tag, three scanners are required.
Example Deployment #
An example case scenario is displayed to give an idea of deployment for single RSSI Scanner,
- A simple room of 10m x 10m
- Scanner with an optimal range 20m (radius) range.
Figure 1: Single RSSI-Scanner Deployment #
Note:
The single scanner only gives the presence of tag that lies anywhere between the scanning radius, to find the closer proximity of the tag, three scanners are required.
3. Multiple RSSI-Scanners Deployment #
- When working with multiple RSSI-Scanner, one should place the scanners at a maximum 25 meters away from each other to get maximum coverage.
- Avoid placing scanners near metal surfaces and in corners, as this will cause high inaccuracy in the results.
- In cases where there is another room on the other side of the wall and another scanner is placed there, the scanner should be installed at least 5–6 meters away from the shared wall.
Note:
In wireless applications a corner acts as a reflector which reflects the signal coming at it
Example Deployment #
An example case scenario is displayed to give an idea of deployment for multiple RSSI Scanners,
- A simple room of 50m x 50m
- Scanners with optimal range 20m (radius) range.
Figure 2: Multiple RSSI-Scanners Deployment Case #
4. Gateway Mounting #
The RSSI Scanner can be easily mounted on the walls of the room using the screw set provided with the kit. The mounting screws are placed 90mm apart from each other as seen in figure 3 and then the Zenix LEN is mounted on these screws as seen in figure 4.
Figure 3: Zenix LEN mounting and screw placement #
Figure 4: Zenix LEN mounted #
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