Device and method for measuring quantities of motion of a motor vehicle
First Claim
1. Device for measuring motion quantities for the purpose of recognizing the driving status of a motor vehicle, having a first sensor for measuring a motion quantity along a first direction in space, and a second sensor for measuring the motion quantity along a second direction in space, the first measuring direction and the second measuring direction of the sensors forming an angle, so that a primary direction and an additional direction can be assigned to the two measuring directions of the sensors, the primary direction coinciding with one of the two measuring directions of the sensors or lying between the two measuring directions of the sensors, and wherein the additional direction is essentially perpendicular to the primary direction and lies in the plane defined by the two measuring directions of the sensors, so that at least one of the two measuring directions of the sensors also has a component along the additional direction, the device being configured so that on the one hand, two essentially redundant values of the motion quantity are measured along the primary direction and on the other hand, additionally a motion quantity along the additional direction is calculated from the values measured by the first sensor and the values measured by the second sensor.
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Accused Products
Abstract
The invention relates to a device and a method for measuring motion quantities for the purpose of recognizing the driving status of a motor vehicle with the aid of a first sensor for measuring a motion quantity along a first direction in space and a second sensor for measuring the motion quantity along a second direction in space, the measuring direction of the first sensor forming an angle with the measuring direction of the second sensor. In this manner, a primary direction and an additional direction can be assigned to the two measuring directions of the sensors. The primary direction coincides with one of the two measuring directions of the sensors or it lies between the two measuring directions of the sensors so that both measuring directions of the sensors have a component along the primary direction. The additional direction is essentially perpendicular to the primary direction and lies in the plane defined by the two measuring directions of the sensors so that at least one of said measuring directions also has a component along the additional direction. The device is configured so that, on the one hand, two essentially redundant values of the motion direction are measured along the primary direction and, on the other, additionally the motion quantity along the additional direction is calculated from the values measured by the first sensor and the values measured by the second sensor.
19 Citations
32 Claims
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1. Device for measuring motion quantities for the purpose of recognizing the driving status of a motor vehicle, having
a first sensor for measuring a motion quantity along a first direction in space, and a second sensor for measuring the motion quantity along a second direction in space, the first measuring direction and the second measuring direction of the sensors forming an angle, so that a primary direction and an additional direction can be assigned to the two measuring directions of the sensors, the primary direction coinciding with one of the two measuring directions of the sensors or lying between the two measuring directions of the sensors, and wherein the additional direction is essentially perpendicular to the primary direction and lies in the plane defined by the two measuring directions of the sensors, so that at least one of the two measuring directions of the sensors also has a component along the additional direction, the device being configured so that on the one hand, two essentially redundant values of the motion quantity are measured along the primary direction and on the other hand, additionally a motion quantity along the additional direction is calculated from the values measured by the first sensor and the values measured by the second sensor.
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18. Device for measuring motion quantities for the purpose of recognizing the driving status of a motor vehicle, having:
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a set of first sensors for measuring a motion quantity along different directions, the measuring directions of said sensors forming a perpendicular system in a plane or in space, a sensor being selected from the set of first sensors the measured value of which sensor is to be monitored;
a second sensor for measuring a motion quantity along a second direction, the second measuring direction of the sensor forming an acute angle with each of the measuring directions of the sensors of the perpendicular system so that it has a component along each measuring direction of the sensors of the perpendicular system;
the device being configured so that the motion quantity along the measuring direction of the first sensor to be monitored is calculated from the measured values of the first sensor or first sensors that are not to be monitored and the measured value of the second sensor, for the purpose of obtaining for said sensor a redundant second measured value for monitoring purposes. - View Dependent Claims (19, 20, 21, 22, 23)
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24. Method for measuring motion quantities for the purpose of recognizing the driving status of a motor vehicle comprising the following steps:
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measuring a motion quantity along a first direction in space with a first sensor;
measuring a motion quantity along a second direction in space with a second sensor, the first measuring direction forming an angle with the second measuring direction of the sensors, so that the two measuring directions of the sensors can be assigned a primary direction and an additional direction, the primary direction coinciding with one of the two measuring directions of the sensors or lying between the two measuring directions of the sensors so that both measuring directions have a component along the primary direction, and the additional direction is essentially perpendicular to the primary direction and lies in the plane defined by the two measuring directions of the sensors so that at least one of said two measuring directions also has a component along the additional direction, based on measurements of the two sensors, determining two essentially redundant values of the motion quantity along the primary direction, and calculating the motion quantity along the additional direction from the values measured by the first sensor and the values measured by the second sensor. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32)
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Specification