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Sensor unit device and method for avoiding condensation on a surface

A technology of sensor unit and temperature sensor, which is applied to the equipment that condenses on the surface, prevents the field of gas from condensing on the surface of the object, and can solve the problem of capacitive humidity sensor deviation drift, etc., and achieve the effect of reliable condensation, low-cost manufacturing, and anti-condensation

Inactive Publication Date: 2005-10-05
BARTEC GMBH
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Problems solved by technology

[0008] Capacitive humidity sensors also have the disadvantage of bias drift, that is, they will not be in a stable state for a long time

Method used

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  • Sensor unit device and method for avoiding condensation on a surface
  • Sensor unit device and method for avoiding condensation on a surface
  • Sensor unit device and method for avoiding condensation on a surface

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Embodiment Construction

[0036] figure 1 The device shown in has a sensor unit 10 according to the invention and an adjusting device 18 which can be, for example, a heater blower or a rear window heater. The surface temperature of object 20 is determined by means of temperature sensor 40 as temperature measuring device 12 , which may be a thermocouple sensor. This temperature sensor 40 forms the infrared radiation of the measuring point 22 in a contactless manner on the surface 21 of the object 20 , and the acceptance range of the temperature sensor 40 is represented diagrammatically by the acceptance cone 13 . A temperature sensor 40 is connected to the calibration and control device 16 .

[0037]The sensor unit also has a dew point sensor 50 as dew point determination device 14 , and this dew point sensor 50 is also connected to the calibration and control device 16 . A dew point sensor 50 is used to determine the dew point temperature of the gas 28 shown in the figure, which surrounds the article...

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Abstract

The invention relates to a sensor unit for a device for avoiding condensation of a gas, in particular water vapour, on a surface of an object, comprising a temperature measuring device, for measuring an object temperature, a dew-point determining device for determining a dew-point temperature of the gas in an atmosphere surrounding said object and a regulation and control device which cooperates with the temperature measuring device and the dew-point determining device and by means of which an actuator for increasing a temperature difference between the object temperature and the dew-point temperature may be controlled a function of the data obtained from the temperature measuring device and the dew-point determining device such that a dropping of the object temperature to or below the dew-point temperature is avoided. According to the invention, the sensor unit is characterised in that the dew-point determining device is embodied as a dew-point sensor for the direct determination of the dew point and the temperature measuring device is embodied as a contactless temperature sensor. The invention further relates to a device and a method for avoiding the condensation of a gas, in particular water vapour, on a surface of an object.

Description

technical field [0001] The invention relates to a sensor unit according to the preamble of claim 1 and to a sensor unit according to the preamble of claim 12 for preventing the condensation of gases, in particular water vapor, on the surface of an object. method. The invention also relates to a device for preventing the condensation of gases, in particular water vapor, on the surface of an object. Background technique [0002] A sensor unit as described in the preamble for use in a device for preventing the condensation of gases (in particular water vapor) on the surface of an object, the sensor unit comprising the following components: a temperature measuring device for measuring the temperature of the object; a dew point determination device, which for determining the dew point of the gas in the atmosphere surrounding the object; calibration and control means, which are operatively connected to said temperature measuring means and dew point determination means, by means o...

Claims

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Application Information

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IPC IPC(8): B60S1/02B60S1/54B60S1/58G01N25/68
CPCG01N25/68B60S1/02G01K11/14G01N21/5911G01N25/18G01N25/70
Inventor R·巴利安A·博姆
Owner BARTEC GMBH
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