Triton Lynx | Supporting the operator
Supporting the operator · Sweden

Protecting the aircrew
when training doesn’t.

Hypoxia or hyperventilation. You can’t see it, smell it or feel it coming. HypoGuard™ monitors how the pilot breathes and warns while there is still time to act.

01  /  The why

Every fighter pilot is trained to recognise hypoxia symptoms. But recognition depends on the very judgement that hypoxia removes first. Today, recognition still rests largely on feel and on trained individual signs. When something goes wrong, there is rarely any record of what.

02  /  The statement

HypoGuard™ turns two invisible threats into a warning the pilot can act on, and a post-flight data record that takes away the guesswork.

HypoGuard™ doesn’t replace hypoxia training. It provides an independent warning when the pilot can no longer rely on instinct.

Problem 01

Hypoxia, a documented flight safety risk

Today, the means of warning a pilot of approaching hypoxia, and of determining what actually happened after a suspected event, are both very limited.

Problem 02

Hyperventilation, easily mistaken for hypoxia

The symptoms resemble each other. The correct responses are opposite. Misidentifying the condition can make the situation considerably worse.

Simulation · loss of supply
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Tactile

Illustrative only. Alarm levels and indications are configured by the operator's medical authority.

03  /  How HypoGuard™ helps

What HypoGuard™ does — from mask-on to post-flight analysis

Hypoxia

Warns of approaching hypoxia

Gives the pilot time to act before cognition starts to deteriorate.

Hyperventilation

Warns, and supports recovery

Differentiates hyperventilation from hypoxia so the right action can be taken, and guides breathing back to a steady rhythm.

Data log

Timestamped data for analysis

Makes it possible to reconstruct the sequence of events after the sortie.

NVG compatible

Works with night vision

Visual warnings and indications are designed for use with night vision devices.

Multi-sensory

Visual, tactile and olfactory warning

Multiple senses are engaged to increase the likelihood that a warning is perceived, even under high workload. Olfactory indication is under development.

System independent

Requires only a mask with an oxygen hose

No integration with aircraft systems or other equipment is needed.

04  /  HypoGuard™

Small enough to forget, until needed.

The device is mounted between the mask and the breathing hose. It needs no aircraft integration, no wiring and no interface with any other system. Should it ever fail, the pilot is simply back to today's situation. Nothing is taken away.

Request a briefing
05  /  The logger

Data

HypoGuard™ logs continuously while the mask is in use. Today, a suspected respiratory event in flight can be difficult to evaluate after the sortie because almost everything depends on the pilot’s recollection. HypoGuard™ provides objective, timestamped data showing what happened, when it happened and for how long.

Request a briefing
PO₂
Oxygen partial pressure
Respiration
Rate, minute and tidal volume
Flow
Bidirectional mask flow
G-force
Load through the sortie
Pressure
Ambient cabin pressure
Temp · RH
Temperature and humidity
Alarm level
Normal · Alert · Warning · Critical
System state
Init · Warmup · Monitoring · Fault
Battery
Voltage and charge state
Event log
Alarms, faults and breathing states
Trials in progress · 2026

A test programme in Northern Europe is underway, including barometric chamber testing, centrifuge testing, night-vision compatibility testing and flight trials.

For civilians  ·  CabinGuard

Cabin pressure, watched from
your own seat.

Pressurization failures are rare. They are also hard to notice, because the first thing thin air takes is your judgement. CabinGuard uses the barometric sensor already in your phone to estimate cabin altitude, and warns you if it climbs past where it should be.

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Advisory only

It is not certified aviation equipment and is not connected to the aircraft. It is intended only as an additional advisory aid and must never replace the instructions of the flight crew or the aircraft's certified systems.

HypoGuard™

A second opinion on every breath.

HypoGuard™ measures what is actually delivered to the mask, and how the pilot is breathing it. When either drifts towards danger, it says so, visually, tactilely, and in a form that survives the flight.

Normal
Alert
Warning
Critical
WARNING THRESHOLD PO₂ · RESPIRATION T + 00:41
Illustrative trace. A falling oxygen supply and the breathing pattern that follows it, as logged by the device.
One system, three vantage points

The same flight, seen by three people who need different things from it.

For the pilot

A last line of defence, in real time

Warnings escalate in steps: a change of light, then a change of rhythm, then vibration through the mask. Seconds of margin, when seconds are all that is left.

Configurable levels · NVG mode · In-flight function check
For the technician

Post-flight analysis, without an investigation

The complete log is downloaded over USB after landing and read in a browser. What happened, in what order, and under what conditions. No one has to reconstruct it from the pilots memory.

Timestamped events · Field-usable · Platform independent
For the flight physician

A physiological record that accumulates

Oxygen supply, respiration and load, flight after flight, pilot after pilot. Alarm levels are set by the operator's own medical authority, not by us.

Trend analysis · Multi-pilot · Operator-defined thresholds
Escalation

Four states. Each one louder than the last.

Light hue, intensity and blink rate, and the vibration pattern, are all selectable. In night vision mode the indication drops to an extremely low light level while the tactile warning is retained in full.

Normal Quiet
Alert Slow blink
Warning Fast blink
Critical Blink + vibration
Software

Everything the flight recorded, in a browser.

Live readouts and graphs while connected, the full flash log afterwards, and the warning profile itself, all from one panel, on whatever laptop is at hand. Alarm levels, light intensity and the other indication settings are configured here, so the device can be tailored to the individual pilot. A demonstration of the software is available on request.

CabinGuard APP

Release
November 2026.

Alongside the military programme we are building a CabinGuard application for iPhone and Android, suited to transport aviation and ordinary air travel. Details follow at release.

iPhone beta testing in progress
Contact

Tell us who you are, and we will tell you more.

Write to us with your role and organisation and we will arrange a briefing, in person or over a secure line.

innovation@tritonlynx.com
Company

Triton Lynx AB
Gothenburg, Sweden

Useful to include

Your organisation and role, the platform or programme you have in mind, and whether you need material under NDA.

Enquiries we welcome

Primes and integrators, air forces and procurement agencies, flight surgeons, civil operators, and investors.