Social Distancing Sensor

How does the Social Distancing Sensor work?

The Social Distancing Sensor (SDS) is a tag that measures distances from other SDS tags using ultra-wideband (UWB) technology. As soon as you, with your SDS tag, come within 1.5 meters of another person with a corona buzzer, both tags will emit a warning signal. The SDS is normally delivered with a vibration, sound and light signal.

Compared with similar tools that work via Bluetooth, UWB is faster, much more accurate, and more reliable. It is also possible to link the social distancing wearable so that people from the same household will not receive a warning signal when they enter each other’s 1.5-meter circle of space.

Reliable distance measuring using ultra-wideband

Sentech’s SDS tags are produced in collaboration with Focus Technologies. The tags use ultra-wideband (UWB) technology to communicate with each other. UWB is a wireless signal that consists of short, high-frequency pulses. UWB is extremely fast and, with a refresh rate of 0.5 seconds, it measures the distance no less than twice per second.

Since these signals are not affected by other wireless signals, the measurements are reliable. In addition, measurements made with this so called one-and-a-half-metre alarm are accurate to 10 centimeters.


Using the SDS tags

Step 1: Each person receives a tag upon entering the building or space. You wear the tag either with a key-cord around your neck or with an armband around your upper arm.

Step 2: If people with tags come within 1.5 meters of each other, both tags will emit a signal.

Step 3: The signal stops as soon as the distance between the two is greater than 1.5 meters.

Easy linking of tags

After linking tags, people from the same household or family can be near each other without setting off a signal. These individuals will only receive a signal when a non-linked tag comes within 1.5 meters of their tag.

It is easy to link tags with a Base Station. The corona buzzers are automatically unlinked when they are switched off or are recharged.

Battery life to 12 hours

With normal use, the rechargeable Li-ion battery lasts 10 to 12 hours. Using the included USB cable, the tag can be recharged in just 2 hours.

A solution that respects privacy

Personal privacy is protected because the tag is not linked to a person. An optional expansion unit allows you to read out the tags. Such a readout provides insight into whether social distancing wearables are clustering at a certain location, such as at the workplace’s coffee machine.

The privacy of your employees and/or guests is also safeguarded when reading out the tags. Each tag has a number, but this number cannot be traced to a person.

Through linking tags, people from the same household can be near each other without being disturbed by a signal.

More insights with optional expansion

With the Access Point option, you can improve the insights that the SDS tag offers. Connecting this Access Point with your own computer network provides the following benefits:

  • When visitors or employees leave your building or grounds, it is important that they return their SDS tag so it can be recharged and disinfected. Placing a tag near the exit as a checkpoint reminds the wearer to return the SDS they are wearing. When used with the Access Point, this tag is also visible in the software application.
  • The Social Distancing Sensor is normally delivered with a signal that vibrates and emits sound and light. With the Access Point option, you can switch these signals on and off to adjust their use to your environment – whether it’s a noisy construction site or a quiet museum.
  • The Access Point allows you to activate the ‘Time indication’ function on the tags. Tags measure the duration of each incident and you can read what amount of time two tags have been within each other’s minimum distance. This information tells you who is at increased risk because they have been in contact with colleagues or visitors for a longer period of time.

Get accustomed to the new 1.5-meter society, together

When we talk to someone, we are used to keeping 80 cm of distance between us. So, the 1.5-meter measure requires us to change our behavior significantly. It’s not part of our culture to do that. How do you then make sure that people are reminded to keep 1.5-meters’ distance?

Where people’s attention is divided – such as in the workplace or in the leisure sector – individuals can quickly find themselves too close to each other. Using a tool like the Social Distancing Sensor, we become accustomed to this new habit of separation.

Make it easier to maintain distance by using these SDS tags.


Specifications of the Social Distancing Sensor

Download brochure Social Distancing Sensor

Would you like to know more about the SDS? You’ll find this tool’s specifications in the brochure (568 KB).