Dräger Safety Ag&co. Kgaa

Markus Wansing

Volker Kuhn

Ingo Kaneblei

Mladen Schlichte

Frank Weisbach

Stefan Barten

Matthias Studer

Fritz Thiele

A thermal imaging camera is provided with at least two different sensitivities for alternating reading and with has a device for linking at least two more and less sensitive images read consecutively. The recording and displaying of thermal images makes it possible to combine images with two different dynamic ranges in a common thermal image, wherein the noise and drift of the pixel signals as well as the amount of storage needed for buffering and processing are reduced at the same time. An image buffering unit is designed as a common accumulator () for both more sensitive and less sensitive original images (B) and makes available a common output image (A). An image weighting unit () is arranged upstream of the accumulator () for weighting the more sensitive and less sensitive original images (B) read alternatingly from the detector unit () pixel by pixel with a settable percentage weighting function (G) and for weighting the output image (A) being buffered in the accumulator () pixel by pixel with a weighting function (I&#x2212;G) complementary to the settable percentage weighting function as well as for the additive superimposition of the two images (B; A) for the purpose of continuously updating the output image (A).

Thermal imaging camera

A test adapter for the saturated vapor calibration of gas-measuring devices. The test adapter () has, in an adapter housing (), a peripheral edge () for receiving a gas-measuring device and has a depression () for receiving the sample liquid in the area of the gas-sensitive surface of the gas-measuring device.

Test adapter for a gas-measuring device

Safety clothing () for persons in dangerous situations is provided including at least one device () for generating light and/or at least one device for generating sound and/or at least one mechanical device for generating a warning stimulus, which is perceptible by the person, an interface () for generating data or signals with a gas-measuring device () and a power supply device () for supplying the at least one device () and/or the interface with power. The features are in functional connection with one another, for optically and/or acoustically and/or mechanically warning the person when at least one limit value of a harmful gas is exceeded or in case of at least one implausible measured value of the air detected by the gas-measuring device ().

Safety clothing

A thermal imaging camera () is provided in which the utilization of the energy reserve carried along is improved in a thermal imaging camera. A sensor element () is provided at the carrying device of the thermal imaging camera. The sensor element () generates a switching signal for switching between a standby phase and an operating phase.

A portable, preferably explosion-proof gas meter is improved in respect to shock loads and has a cylindrical measuring cell () and an evaluating circuit on a printed circuit board (). The measuring cell () is connected to the printed circuit board () and is mounted in the housing in a shock-absorbing manner in the radial and longitudinal directions and is in gas flow connection with the environment through openings () in the housing.

Growing community of inventors

Lübeck, Germany

Markus Wansing