Glossary
Alarm Group
Pools can be divided in Alarm Groups to make it easier to know which pool -or area the incident is located.
A facility is also divided in to zones. Sensors are configured to belong to a specific zone. The Sentag system signals can all be configured, based on your choice.
Alarm parameters
This is the configured parameters as depth and time which must be exceeded for the Sentag/wristband to alert an alarm. The Sentag/wristband constantly monitor depth and when the configured threshold (@80cm) is passed, a timer starts. When settings of the timer has exceeded, (@30 sec) the Sentag/wristband sends the unique signal as a possible drowning incident, which will be received by the sensor units in the pool.
Blindspot
There can be areas in a pool where the Sentag/wristband signal is hard to detect by the pool Sensors -we call them “blind spots”. By planning the layout of all sensors, and ad more Sensors, the “blind spots” can be kept at a minimum level.
Drowning
If someone has difficulty breathing as a result of being underwater, they have drowned
Definition according to WHO
“Drowning is the process of experiencing respiratory impairment from submersion/immersion in liquid; outcomes are classified as death, morbidity and no morbidity”.
Drowning is the 3rd leading cause of unintentional injury death worldwide, accounting for 7% of all injury-related deaths.
There are an estimated 372 000 annual drowning deaths worldwide.
Global estimates may significantly underestimate the actual public health problem related to drowning.
Children, males and individuals with increased access to water are most at risk of drowning.
Source: WHO
Interference
The alarm signal from the wristband can be interfered by air bubbles, sound in the water and/or electrical installations. By increasing the numbers of sensors an interference problem can be minimized.
Lamp niche
The Sentag sensor is usually installed in a pool light niche. Sentag uses standard pool lightning niches to place the sensors into the poolwalls. The sensor is protected by a grid which makes it possible for the wristband signal to reach the sensors, but still protect it from abuse and ingress. The sensor cable is installed through the poolwall and connected to a receiver outside the pool, in a dry area.
Lifeguard
Staff trained to supervise the safety and rescue swimmers in a swimming pool or water park. Lifeguards are strong swimmers and trained in CPR/AED first aid and certified in water rescue, using a variety of aids and equipment depending on requirements of their specific facilitie.
Manual Alarm button
A push button to manually activate an alarm and can be placed next to a water slide, for example.
Manual pushbuttons allows anyone to manually call for attention in case of an incident in the facility to have the alarm transferred and displayed in the Sentag system and in all Sentag connected units. (like walkie-talkies, sirens, displays etc)
Noise
Sound created by water, engines in the pool, people etc, that effects the underwater accoustic.
RFID
A small “coin-like” tag that stores information and identify users. Sentag wristbands can be equipped with different types of RFID chips, which makes it possible to integrate an existing or a future RFID access control system. When integrated, it enables features such as; access control, automatic ticket management, automatic distribution of wristbands, cashless payment, exit control with automatic collection of wristbands, and more.
Sensor
The Sensor is a hydrophone, (a sensitive microphone) that receives signals from the pool. It is connected to the Sensor Unit by a cable.
Sensor Unit
Electronics outside of the pool, connected to the sensors inside the pool. The Sensor Unit monitor signals from the pool through the Sensor, i.e. a hydrophone. After analysing the signal, it will determine if it’s an alarm from a Sentag/wristband. In that case the information is sent further to the Control Unit.
Wall Unit
A wall display with a panel to operate the Sentag system by Lifeguards.
Wearable technology
Body-worn electronic device with technology developed for a specific or general purpose or application.
