If a hand dryer doesn’t blow air at the right temperature for the right duration, the users are likely to waste paper towels which defeats the purpose of the hand dryer.
Dan Dryer is a leading supplier of equipment for restrooms all over the world. Together, EKTOS and Dan Dryer have created a new generation of individually customizable hand dryers for trains with improved sensor technology. The result is: better dryers, less waste, and less resources spent on maintenance.
Customizable hand dryers
How close should hands be to the dryer in order to make it start? And for how many milliseconds should a hand dryer blow air after the hands have been removed? This can depend on the location and position of the dryer which means that each dryer needs to be customizable.
The engineers at EKTOS have developed a PC application for the main computer in the train, which can be connected to the hand dryers via digital interfaces such as Modbus or RS485. This allows for tracking of key parameters for each hand dryer, reporting of error on e.g. system, heater, or fan, as well as configuration of each individual dryer. Preventive maintenance can be scheduled after a defined number of times the dryer has been activated.
Vagn Eden, co-owner and Product Manager at Dan Dryer, has appreciated brainstorming ideas and solution with EKTOS: “EKTOS knows a lot about which solutions are available and technically possible. Not many hours passed since our initial meeting before I received a proposal for a feasible solution. It has been a very efficient process.”
EKTOS knows a lot about which solutions are available and technically possible […]. It has been a very efficient process.- Vagn Eden, Co-owner and Product Manager at Dan Dryer
EKTOS has helped Dan Dryer develop two new versions of the controller, one for 230 V and one for 24 V DC to be installed in trains.
Time of Flight vs. infrared light
As a part of the collaboration between EKTOS and Dan Dryer, EKTOS was asked to find a new sensor solution to replace the common infrared sensors. Infrared sensors respond differently to different skin tones, skin types, and to different background lighting, and Dan Dryer was looking for a more consistent solution. After having researched the market for alternative solutions EKTOS’ engineering team decided on using the ”Time of Flight” (ToF) technology. The ToF sensors measure the distance to the hands based on time it takes for emitted photons to reflect back on the sensor. This enables accurate measurement regardless of ambient background light and the characteristics of the hands.
Vagn Eden has been very satisfied with the process of researching, testing, and choosing alternative sensors: “The team found 5-6 different options, then we tested them, and based on that, we chose the ToF sensor. I’m very pleased with the team’s approach and the communication throughout the process.”
I’m very pleased with the team’s approach and the communication throughout the process – Vagn Eden, Co-owner and Product Manager at Dan Dryer
Designing for approval and production
Integrating knowledge about product approval and compliance requirements as well as production requirements into the early design phase minimizes the risk of unpleasant surprises and unexpected cost. With the embedded engineering team in Ukraine, the accredited test laboratories in Denmark, and production facilities in Ukraine, EKTOS has the setup to handle the entire process from design to mass production.
Dan Dryer is currently working with TECHTO Electronics, the joint venture of TKT Electronics and EKTOS, on the production. We are looking forward to seeing the upgraded hand dryers all around.
Contact EKTOS on firstname.lastname@example.org or +45 7070 1499 if you want to discuss how EKTOS can assist with your product.