Boots – shoes – and leggings
Patent
1987-08-12
1989-07-18
Lall, Parshotam S.
Boots, shoes, and leggings
36455101, 36442403, G06F 1520, G01H 1106
Patent
active
048498947
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND AND SUMMARY OF THE INVENTION
The present invention relates to a process for determining operating conditions of a motor vehicle from output signals of a sensor for a relevant operating variable. The output signals are supplied directly and in parallel via an analyzer with respect to a relevant parameter, to an evaluating device.
This type of process is known from German Published Unexamined patent application No. 3,007,747 and has the purpose of obtaining the information contained in the output signal of the sensor concerning an additional operating variable, with an objective of saving a separate sensor for this additional operating variable. The sensor, in this known process, has the purpose of determining a physical value, such as a rotational speed, a path, an angular positionor a pressure, and receiving, as additional information, a statement concerning, for example, the temperature or an additional pressure. The primary information contained in the output signal of the sensor and the additional information are used for controlling the access to a characteristic curve or a characteristic diagram.
An objective of the present invention is to provide a significantly improved process for determining operating conditions of a motor vehicle with respect to the amount of the obtained information as well as with respect to the conversion into measures resulting from it.
This and other objectives are achieved in the present invention in a process for determining operating conditions of a motor vehicle from output signals of a sensor for a relevant operating variable, these output signals being supplied directly to an evaluating device in parallel to this direct supply, supplied to the evaluating device via an analyzer with respect to a relevant parameter, this process comprising the steps of analyzing, via at least one additional analyzer with respect to an additional parameter, the output signal. The process also includes the steps of supplying the additionally analyzed signal to the evaluating signal in parallel to the directly supplied output signal, and generating in the evaluating device an at least two-dimensional pattern, the shape of this pattern being determined by the output signals of the sensor and of the analyzers. The pattern is compared with preset patterns, and an indicating measure is provided when the limit pattern for a critical operating condition is approached.
Of central importance for the invention is the at least two-dimensional pattern that is known from the field of speech recognition. In speech recognition, the output signal of the sensor is evaluated by the analyzers with respect to all or to a large part of the information contained in it. Each information influences the pattern in a characteristic way. The comparison of the characteristics of the current pattern with the characteristics of the present pattern will then result in a concrete statement as to what extent the current operating condition can still be tolerated or to what extent it has approximated a critical operating condition.
The present invention may, for example, be applied to a pressure sensor that determines the loading of a chassis spring of a motor vehicle at the point of support. The additional information contained in it, such as the fundamental frequency, the excitation frequency, the amplitude and the change of these frequencies and amplitudes, in addition to the primary information of the pressure are converted into a corresponding pattern form. The comparison of the current pattern with the preset patterns takes place by the conventional process of image comparison, for example, by a correlation analysis. In correlation analysis, the correlation coefficient represents a precise statement concerning the conformity of the current pattern with a preset pattern. In addition, other processes for the image analysis are also contemplated, such are used, for example, within the framework of photographic images for the automatic focusing of a picture.
In contrast to other known processes for the determ
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patent: 4541115 (1985-09-01), Werth
patent: 4559602 (1985-12-01), Bates, Jr.
patent: 4574265 (1986-03-01), Kaiser et al.
patent: 4583176 (1986-04-01), Yamato et al.
patent: 4607528 (1986-08-01), Kallergis
patent: 4719587 (1988-01-01), Berte
Bayerische Motoren Werke A.G.
Lall Parshotam S.
Trans V. N.
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