Sensirion Ag

Pascal Gerner

Markus Graf

Felix Mayer

Dominik Niederberger

Mark Hornung

Lukas Bürgi

Ulrich Bartsch

Matthias Streiff

Martin Winger

Andrea Sacchetti

Johannes Schumm

Dominic Boni

Andrea Wüest

Dominic Böni

Christoph Schanz

Christian Landis

Robert Rupprecht

Martin Wirz

Daniel Rüffer

Eva Poulsen

There is provided a portable electronic device with one or more integrated temperature sensors () for measuring an ambient temperature, a compensator () for reducing the difference between a sensor output (Ts) and the ambient temperature (Ta) with the compensator () switching depending on environmental and/or handling conditions between a plurality of compensation modes selected dependent on measurements of one or more other integrated and/or external sensors.

Portable electronic device with integrated temperature sensor

A sensor chip comprises a substrate () with a front side () and a back side (), and an opening () in the substrate () reaching through from its back side () to its front side (). A stack () of dielectric and conducting layers is arranged on the front side () of the substrate (), a portion of which stack () spans the opening () of the substrate (). Contact pads () are arranged at the front side () of the substrate () for electrically contacting the sensor chip. A sensing element () is arranged on the portion of the stack () spanning the opening () on a side of the portion facing the opening ().

Sensor chip

The present sensing device comprises a sensor (, ) for providing sensor data representative of a quantity to be measured. Together with the sensor (, ) a radio frequency interface (, ) for transmitting the sensor data is arranged in a casing (, ). The casing (, ) comprises an opening (, ) for exposing a sensitive element (, ) of the sensor (, ) to an environment of the casing (, ). A seal (, ) is provided for sealing the opening (, ) against an interior (, ) of the casing (, ). The sensing device can be used as autonomous humidity detector for detecting humidity e.g. in cars under test.

Sensing device

An input device for triggering a function of an electronic device comprises a humidity sensor (), and a control unit (). The control unit () analyzes a humidity signal (RH) supplied by the humidity sensor () and provides a trigger signal (C) subject to the analysis of the humidity signal (RH) for triggering the function of the electronic device (). In such way, the function of the electronic device can simply be controlled by blowing at the input device ().

Input device

A mobile phone comprises a casing and a cavity in the casing. A humidity sensor is arranged for measuring a humidity in the cavity. In response to a trigger, a control unit analyzes a humidity signal supplied by the humidity sensor. A result of the analysis is presented via an output unit. Such device allows for measuring a humidity of a user's skin in case the user covers a window in the casing connected to the cavity by a body part.

Mobile phone with humidity sensor

A system for storing ammonia comprises gas detector that is able to detect gases other than ammonia. The system further comprises thermally activatable ammonia stores, which can be activated to release ammonia upon heating. When the ammonia stores are not heated, the system is below ambient pressure and any leak will cause external gas to enter the system. Therefore, the gas detector is used to detect the presence of such external gas, which allows to detect leaks. The gas detector may be embodied as a thermal detector using a single heater and two temperature sensors for detecting a gas flow as well as external gas.

Ammonia storage system

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Zurich, Switzerland

Pascal Gerner