Acreo Ab

Acreo Swedish Ict Ab

Oscar Larsson

Magnus Berggren

David A Nilsson

Göran Gustafsson

Mats Robertsson

Nathaniel D Robinson

Xavier Crispin

Payman Tehrani

Xiaodong Wang

Rune Groppfeldt

A moisture sensor, for measuring moisture in a building without leaving visible scars to the building surface, is provided. The moisture sensor includes a flexible carrier carrying an antenna for receiving EM-radiation between 9 kHz and 11 MHz and a resonant circuit including a moisture reactive element. The moisture reactive element includes a hygroscopic electrolyte arranged between a first and a second electrode, wherein the electrolyte in the presence of moisture forms mobile ions and provides a complex impedance at least in response to the alternating voltage, which complex impedance varies with the moisture content of the electrolyte.

Moisture sensor

A device for integrating and indicating a parameter over, comprising: a first electrode (), a second electrode (), an electrolyte (), which is in contact with the first electrode and in consuming contact with a consumption portion () of the second electrode, at least two indicators (I, I, I), which are connected to the consumption portion () at a respective connecting point (P, P, P). The electrolyte () and the consumption portion () are selected such that when a voltage is applied over the electrodes (), the consumption portion () is consumed at a predetermined rate, wherein the indicators (I, I, I) are arranged to switch states in response to a consumption frontier (F, F) of the consumption portion reaching or passing a connecting point (P, P, P) associated with the respective indicator (I, I, I), wherein at least one of the indicators is a binary (on/off) indicator.

Device for integrating and indicating a parameter over time

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Norrköping, Sweden

Oscar Larsson