Recording the number of people in a room or area.

The aim in this case is to determine how many people are in a room during the course of the day. This may involve the fact that no more than n people are allowed in a room due to hygiene regulations. The usage and booking behavior of existing meeting rooms can also be analyzed on the basis of current and historical data. One result can be that several small rooms instead of one large meeting room cover the actual needs of the team more efficiently. Instead of additional space, the existing space can be used more efficiently by converting it. An EnoSense® People Counter door sensor is mounted above the door on the corridor side as a data source. This is done after cleaning the surface of the door frame with the pre-assembled double-sided adhesive pad. The sensor detects people passing below (distance between people typ. 1.00 m) and sends an EnOcean message with a count value (0 .. 255) immediately after detecting a person. The value changes continuously (positive counting direction 254, 255, 0, 1, 2, …; negative counting direction 1, 0, 255, 254, 253, …). The actual number of people must be determined by the cloud application. This also makes it possible to equip rooms with more than one door and therefore with more than one EnoSense® People Counter. An EnoDisc® within range records the messages and forwards them to the VL-700 BASE via Ethernet. Depending on the configuration there (up to 500 sensors are possible), this then sends the data to the MQTT broker of choice in JSON format. In this form, we have already made several hundred buildings a good deal more efficient in terms of utilization and cost-effectiveness. The accuracy of the EnoSense® People Counter is typically between 80 % and 95 %. Various factors play a role here (please feel free to contact us). If it is important to reliably detect an empty room (i.e. 100 % accuracy), e.g. to generate a release in a booking system, it is also advisable to use a motion detector such as the EnoSense® PIR Ceiling in the room.
If this does not detect any movement after a period of 20 minutes, for example, the counter for the number of people in the room is set to 0, regardless of the count value. This allows you to cyclically correct any incorrect counting.