FAQ

SYSTEM SECTION

What is the accuracy of the system?

The accuracy, given that there is a line of sight between Tag and Anchors, is sub-meter. In good conditions, the average accuracy is 30 cm.

Is this technology similar to Wi-Fi, Bluetooth etc.?

Just like Bluetooth and Wi-Fi, Ultra Wide Band is a radio technology, however it is quite different from the other technologies. It is strongly resistant to interference and enables very precise positioning, a feat that both Bluetooth and Wi-Fi or other radio-based technologies simply cannot provide.

It utilizes very wide bandwidth (hence the name) typically 20x wider than Wi-Fi.

What kind of Ethernet cables do you use?

We use standard Ethernet Cat5 cabling.

How are the Anchors deployed? Are there any rules for the deployment?

There are several conditions that should be met in order to achieve highest accuracy possible. These conditions are described in detail in the RTLS TDoA kit Install guide. Please follow it closely during the system installation.

Do you use a server on premises or a cloud connection?

For larger installations, we deploy a host server on the customer’s premises. Most customers want to have their sensitive location data stored locally.

How many Anchors are needed to calculate position?

Just like GPS, the system needs at least four Anchors to calculate precise position.

What is the frequency and bandwidth of the system? What about interference?

The system operates between 3.5 – 7 GHz in four 500 MHz wide channels. Despite operating in such a wide band, the nature of UWB signals ensures that there is no interference with any other wireless systems operating in the same band.

What area can be covered by RTLS Kit?

RTLS Kit can cover an area of up to 500 square meters.

What is the communication distance between Tags and Anchors?

The reliable communication distance using maximum transmission power reaches around 60 meters. However, the location distance is around 30 meters.

Is there a limit on the total number of devices? How large is the maximum area that the system can cover?

There is no limit on the number of devices in the system, which means that the system is fully scalable. This also implies that the location area is also unlimited.

Is the Z coordinate also available?

Yes, however this feature requires special deployment of the Anchors. The Anchors must be deployed diagonally plus 3D positioning must be enabled in software.

ANCHORS SECTION

How are the Anchors powered?

They are powered by Power over Ethernet (Passive injection in free cable pairs), delivered over the UTP cables or via USB.

What is the power consumption of Anchors?

The average power consumption is 1.5W (DC 5V, 250 mA). For further information, please see the Anchor’s Factsheet.

How can I add more Anchors to the system?

The Anchors are added to the network automatically.

Can the Anchors be powered from a battery?

Yes, they can be powered via USB by a battery power pack.

What about the casing? Do you have IP67 cases?

The standard Anchor casing is not IP67 protected. We can provide additional IP67 box.

Do the Anchors work outside?

In principle, they do work outside. However when outside, the Anchors must be protected against water and dust or other particles, thus special cases are required.

Are the Anchors synchronized over the cable?

The synchronization works wirelessly through UWB signal.

Can the Anchors be placed on metal or any other surface?

For optimum performance, the Anchors should not be placed directly on any surface. For this reason, we always provide Anchor holders to properly mount the Anchors.

Is the Anchor’s antenna omnidirectional? What is the ideal orientation of the Anchor?

Generally, the Anchor’s antenna is indeed omnidirectional. However, the main beam is on the side of the Anchor, next to the USB port. This side should be pointed in the direction, where the Tags should be localized.

SERVER SECTION

How is the RTLS Studio delivered? Is it on a host server or a virtual machine?

For the TDoA kit, the RTLS Studio runs on a VirtualBox image. For larger installations, we provide installation package for Ubuntu Linux.

What are the parameters for the host server?

We usually use the HP ProLiant Microserver Gen8, you can view the specific parameters here.

What is the required memory of the Hard Disk of the server for the database?

The size depends mainly on the amount of historical data that you want to have. One position update means 50 B stored into the database. So for example if you have hundreds of Tags with a refresh rate of 1 second and you have a Hard Disk of 1 TB, the database can hold up to several months of historical position data.

What is the operating system where the RTLS Studio runs?

We use Linux operating system, namely Ubuntu in version of 14.04. Knowledge of Linux is not needed since everything is managed via web interface.

TAG SECTION

What is the difference between Piccolino and Li-ion Tag?

The main difference lies in used battery. Li-ion Tag uses classic Li-ion battery, hence the name, and Piccolino utilizes a CR battery. Thanks to this the Piccolino is approximately two times smaller than Li-ion.

Li-ion is better for evaluation and testing and Piccolino is more suitable in applications, where size of the Tag is crucial. Li-ion can be re-charged via USB and Piccolino needs to have its battery exchanged.

What is the battery lifetime of the Tag?

The battery lifetime is very highly dependent on the selected refresh rate and whether inertial sensors are activated. The higher the refresh rate, the more often the Tag transmits data and this in turn decreases the battery lifetime. See the Tag’s Factsheet for examples.

How can I add a new Tag to the system?

New Tags are added automatically into the system. They are visible within RTLS Manager software.

Is the Tag’s casing water and dust resistant? Can it withstand vibrations or an impact with the ground for example?

The standard casing that we use is not resistant against water. However, we provide Enclosure Design Service. We also have several 3D models for the Piccolino Tag, which you can print yourself.

Does the Tag have sensors of some kind?

As for the Li-ion Tag, it includes an Accelerometer in default and optionally a Magnetometer and Barometer. Thanks to these sensors, it can provide information about its orientation in space (roll, yaw, pitch). Piccolino includes only the Accelerometer to keep it as small as possible.

What is the maximum refresh rate of the Tag?

For Li-ion Tag, the maximum refresh rate is 10 ms. For Piccolino, it’s 50 ms.

How many Tags can there be at one place at one time?

This is very highly dependent on the refresh rate that you wish to use. With higher refresh rates, the number of Tags operating at the same time decreases. However, we can increase the number again by increasing the data rate, thus decreasing the transmission time. See the table below for some examples:

table_tag_faq

BUSINESS SECTION

What is the price per square meter of the system?

There is no such price. The number of Anchors is determined based on the floor plan of the area, where the location system is to be deployed. That means that the Anchors’ deployment varies with each installation.

What about the software licensing? Are there any fees?

There is the demo license of the software, which is meant for the TDoA kit for evaluation purposes only. Then there is a business license with limited number of devise. Lastly there is a business license with unlimited number of devices for very large installations. There is also an annual fee of 20% of the software license. This fee ensures that you always receive the latest updates etc.

You can also pay extra for extended support and additional services from us.

How do you determine the number of necessary Anchors?

The usual approach is that we obtain a floor plan from you, which includes the area, where you wish to localize objects. From this plan, we calculate the number of necessary Anchors, to ensure that the area is fully covered with radio signal to guarantee an optimum performance.

Is there a possibility to try out your software for free?

Yes, we have an online free demo version of our software running. You can find it at the following website: www.rtlsstudio.com. You can check the visualization in both 2D and 3D, API documentation and many other features.

Do you provide both Hardware and software?

Yes, both HW and SW is designed and provided by us directly.