Building machine comprising a presence detection system
First Claim
1. A road building machine comprising:
- a control panel,a driver'"'"'s seat or a standing work position for an operator, anda presence detection system comprising a sensor configured to detect whether the operator is present on the driver'"'"'s seat or at the standing work position,the sensor of the presence detection system being integrated in the control panel of the building machine,the sensor is configured to detect the distance between the sensor and the operator on activation of the presence detection system, wherein the distance defines a starting value, andthe presence detection system is configured to determine on the basis of the starting value a constant tolerance range around the starting value, and is further configured to check whether the measured distance between the sensor and the operator remains within the tolerance range during operation of the building machine.
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Accused Products
Abstract
A building machine, especially a road finishing machine, comprising a presence detection system. The presence detection system comprises a sensor which is integrated in the control panel of the building machine. By means of the sensor a distance measurement can be carried out, which determines whether the operator is properly seated on the driver'"'"'s seat of the building machine or whether he stands properly at the standing work place. In order to determine the presence a tolerance range may be specified, which allows a slight movement of the operator on the driver'"'"'s seat. If the operator approaches the limits of the tolerance range he is asked in time by warning signals to be seated again properly on the driver'"'"'s seat or adopt a proper position at the standing work place. If the sensor detects no operator on the driver'"'"'s seat or at the standing work place all of the functions of the building machine are stopped in order to make sure that the work site is safe.
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Citations
14 Claims
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1. A road building machine comprising:
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a control panel, a driver'"'"'s seat or a standing work position for an operator, and a presence detection system comprising a sensor configured to detect whether the operator is present on the driver'"'"'s seat or at the standing work position, the sensor of the presence detection system being integrated in the control panel of the building machine, the sensor is configured to detect the distance between the sensor and the operator on activation of the presence detection system, wherein the distance defines a starting value, and the presence detection system is configured to determine on the basis of the starting value a constant tolerance range around the starting value, and is further configured to check whether the measured distance between the sensor and the operator remains within the tolerance range during operation of the building machine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. Method for checking the presence of an operator on a driver'"'"'s seat or at a standing work position of a building machine, comprising the steps of:
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activating a presence detection system, the presence detection system comprising a sensor that is integrated in a control panel, carrying out a measurement by the sensor in order to determine a distance between the operator and the sensor, wherein the distance defines a starting value, defining a tolerance range based on the starting value detected by the presence detection system, and checking whether during the operation of the building machine the measured distance is within the tolerance range. - View Dependent Claims (13, 14)
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Specification