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Sensor array comprising a temperature probe

A technology of a sensor device and a temperature sensor, which is applied in the directions of measuring devices, instruments, scientific instruments, etc., can solve the problems such as the troublesome control device and the heating unit, the extra technical cost and the trouble.

Active Publication Date: 2014-05-28
ROBERT BOSCH GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantage of this sensor system is that, on the one hand, it requires a relatively complex control device
On the other hand, the sensor element used in such a sensor device is relatively complex to produce, because on the one hand the manufacture of the heating unit requires considerable additional technical outlay, and thus the heating unit and other parts of the sensor element Wiring requires multiple (typically 4 to 5) coupling contacts on the sensor element

Method used

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  • Sensor array comprising a temperature probe
  • Sensor array comprising a temperature probe
  • Sensor array comprising a temperature probe

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Embodiment Construction

[0037] In the following, the invention is explained with reference to a lambda probe, by means of which the oxygen fraction in the measurement gas chamber 110 is to be determined, without limiting other possible configurations. According to the invention, a sensor device 112 is proposed here, which contains at least one control device 114 and at least one sensor element 116 , which are connected to one another via an interface 118 , which is only shown symbolically in the figure. The control device 114 is here figure 1 , 2 , 3 and 6 are only shown symbolically. The control device 114 may include, for example, one or more voltage measuring devices to detect the Nernst voltage, and / or one or more current sources, and / or voltage measuring devices to detect the resistance of the thermistor, and / or other measuring device, and / or current source and / or voltage source. The electronic configuration of such a control device 114 is known in principle to a person skilled in the art or ...

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Abstract

The invention proposes a sensor array (112) for sensing at least one property of a gas in a test gas chamber (110), in particular for determining a concentration of a gas component in the gas. The sensor array (112) comprises at least one sensor element (116). The sensor element (116) has at least one Nernst cell (120) with at least one first electrode (122) to which the gas from the test gas chamber (110) can be applied, at least one second electrode (124) which is arranged in a reference gas chamber (126), and at least one solid electrolyte (128) which connects the first electrode (122) and the second electrode (124). The sensor array (112) has at least one temperature probe (138) for sensing a temperature of the gas in the test gas chamber (110). The sensor array (112) also comprises at least one controller (114) and is set up to detect a signal from the Nernst cell (120) and to evaluate said signal taking into account the temperature.

Description

technical field [0001] The invention relates to known ceramic sensor elements, in particular sensor elements which are based on the electrolytic properties of a particular solid, ie determine the ionic capacity on the basis of the solid's conduction. Such sensor elements are used in particular in motor vehicles. An important example of ceramic sensor elements in automobiles is the sensor element for determining the composition of the air-fuel mixture, which is also called a "lambda probe" and is used not only in fast combustion engines, but also in diesel technology It is of great significance to reduce the harmful substances of exhaust gas. However, the invention is also applicable to other types of ceramic sensor elements, such as particle sensors with a solid electrolyte, in particular in exhaust gas sensors, or similar types of sensors. Without limiting the scope of protection, the present invention is explained below using the example of a lambda sensor, but sensor elem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/406
CPCG01N27/4065
Inventor J.施奈德L.迪尔
Owner ROBERT BOSCH GMBH
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