Device for controlling an air conducting element in a motor vehicle
An air diversion, motor vehicle technology, used in vehicle components, air handling equipment, transportation and packaging, etc., can solve problems such as difficulties, different tolerances, and different aging phenomena of gas sensors
Inactive Publication Date: 2008-01-02
SIEMENS VDO AUTOMOTIVE AG (DE)
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Problems solved by technology
Furthermore, different gas sensors have different aging phenomena and are often very different in their tolerances
The problem that arises from this is that it is extremely difficult to set the threshold once at which a switch to the recirculating air position occurs when one of the gas sensors detects a concentration of harmful substances above the threshold
Method used
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[0019] FIG. 1 shows a device 1 for controlling a ventilation element, which is installed in a motor vehicle 18 . The device 1 for controlling a ventilation element comprises a first gas sensor S1 and a second gas sensor S2. The first gas sensor S1 generates, for example, the signal UNO x , the signal is proportional to the concentration of nitric oxide in the circulating air. The second gas sensor S2 generates, for example, a signal UCO which is proportional to the concentration of carbon monoxide in the circulating air. The first gas sensor S1 will signal UNO x is supplied to the first signal conditioning element 2 , and the second gas sensor S2 supplies the signal UCO to the second signal conditioning element 3 . pair signal UNO x , UCO preprocessing, the signal is sent to the electronic evaluation unit 4 . Within a defined time, the electronic evaluation unit 4 selects two sensor signals UNO x , one of UCO, and will only one sensor signal UNO x or UCO to a single sig...
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The invention relates to a device and a method for controlling at least one air conducting element (15) in a motor vehicle. Said device comprises a first gas sensor (51) and a second gas sensor (52) which generate signals in accordance with the harmful gas concentration in the ambient air. An output signal that is used for triggering the air conducting element is generated with the aid of a signal evaluation unit. The aim of the invention is to create a method and a device which are used for controlling an air conducting element, accurately detect and distinguish the different development of harmful gas concentrations in the atmosphere and trigger the air conducting elements accordingly, and are embodied in an inexpensive, reliable, and durable manner. Said aim is achieved by configuring an electronic decision unit (4) that determines which of the two sensor signals is fed to a single signal evaluation unit during the current interval.
Description
technical field [0001] The invention relates to a device and a method for controlling an air guide in a motor vehicle. Background technique [0002] The prior art discloses devices and methods for controlling air guides in motor vehicles. An electrical device and a method for controlling an air-conditioning system of a motor vehicle are known, for example, from DE 2941305 A1. In this case, a switching flap is provided in such a way that air can be selectively supplied from the outside of the motor vehicle through the air duct to the passenger compartment or back from the interior of the passenger compartment into the air duct. For this purpose, the delivery of the outside air is controlled accordingly depending on the conditions of the outside air and the conditions of the interior air of the motor vehicle. The system is controlled by a gas sensor which measures the concentration of pollutants in the outside air and subsequently switches the air flaps to the circulating ai...
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CPCB60H1/008B60H3/0085B60H3/00B60H1/00
Inventor 彼德·比贝尔斯特凡·海因里希安德烈亚斯·奥特米夏埃尔·施勒格尔
Owner SIEMENS VDO AUTOMOTIVE AG (DE)