Sartorius Ag

Sartorious Ag

Gerd Freydank

Christian Oldendorf

Winfried Graf

Herbert Rink

Ralf Mueller

Olaf Brodersen

Dieter Roemhild

Franz Klapper

An electronic scale having a measuring sensor (), a digital signal processing unit (), a digital display (), a bubble level (), which includes a container () that is partially filled with a liquid () while forming a gas bubble (), and circuit component or program routine in the digital signal processing unit () for detecting a displacement of the gas bubble (). An additional circuit component or program routine detects the diameter of the gas bubble (). The diameter of the gas bubble changes due to vertical vibrations of the scale. The signal from the measuring sensor () falsified by vibrations can thus be corrected by the digital signal processing unit () by calculation, making use of the diameter signal.

Electronic scale comprising a bubble level

An electronic scale having a measuring sensor (), a digital signal processing unit (), a digital display () and an inclinometer (). The inclinometer derives a signal for the tilt of the scale from the difference of at least two signals. The digital signal processing unit () is provided with an additional circuit component or program routine that adds the two signals and, by way of this cumulative signal, corrects the vibration-distorted signal of the measuring sensor (). A plurality of inclinometers enables the simultaneous detection of momentary gravitational acceleration. For example, in an electric bubble level, the gas bubble moves out of place when tilted and the diameter of the gas bubble changes when the gravitational acceleration changes. The scale thus provides an additional signal for correcting the influence of disturbances with minimum complexity.

Electronic scale comprising an inclinometer and corresponding signal evaluation method

An inclination sensor is provided having a level that has a liquid and a gas bubble under a covering glass in a housing. A light source is arranged above the covering glass. The inclination sensor can be used to determine a direction and degree of an inclination with high accuracy and which is suitable for automatically aligning an apparatus provided with the inclination sensor. An arrangement is provided that has at least two light receivers arranged above the covering glass such that the light that is emitted from the light source and, in the case of a centered gas bubble, is scattered on the surface of the covering glass coming in contact with the gas bubble can be detected by the at least two light receivers. Different quantities of light can be detected by the light receivers when the gas bubble is not centered, and the light source and the light receivers are arranged on a chip substrate.

Inclination sensor with optoelectronic level

An inclination sensor is provided having a level which has a liquid and a gas bubble in a housing under a covering glass, wherein a light source is arranged above the covering glass. The invention is based on the object of providing an inclination sensor which can be used to determine the direction and degree of an inclination with high accuracy and which is suitable for automatic orientation of an apparatus provided with such an inclination sensor. The object is achieved according to the invention by virtue of an inclination sensor in which at least two light receivers are arranged above the covering glass such that light, which is emitted by the light source and undergoes total internal reflection at the gas bubble when the gas bubble is centered, can be detected by means of these at least two light receivers, wherein different quantities of light can be detected by means of these light receivers when the gas bubble is not centered, and the light receivers are arranged on a chip substrate.

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Goettingen, Germany

Gerd Freydank