BUILDING MACHINE COMPRISING A PRESENCE DETECTION SYSTEM

• US 20120012415A1
• Filed: 07/11/2011
• Published: 01/19/2012
• Est. Priority Date: 07/13/2010
• Status: Active Grant

• Current Assignee: Joseph Vã¶Gele AG (Deere & Company)
• Original Assignee: Joseph Vã¶Gele AG (Deere & Company)
• Inventors: Oettinger, Klaus
• Granted Patent: US 8,459,396 B2
• Time in Patent Office: Days
• US Class Current: 180/272
• CPC Class Codes: B60K 28/04 responsive to presence or absence of the driver, e.g. to weight or lack thereof
• CPC Class Codes: B60Y 2200/414 Pavers
• CPC Class Codes: F16P 3/141 using sound propagation, e.g. sonar
• CPC Class Codes: F16P 3/144 using light grids
• CPC Class Codes: F16P 3/145 using magnetic technology
• CPC Class Codes: F16P 3/148 using capacitive technology

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.

Claims

1. Building machine, especially a road finishing machine, comprising:

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,

wherein

the sensor of the presence detection system is integrated in the control panel of the building machine.

2. Building machine according to claim 1 wherein the sensor is configured to detect in a non-contact manner whether the operator is present.

3. Building machine according to claim 1 wherein the sensor is a capacitive, inductive, ultrasonic or infrared sensor.

4. Building machine according to claim 1, wherein the presence detection system is configured to detect on the basis of a distance measurement whether the operator is present.

5. Building machine according to claim 1, wherein the presence detection system defines a medium range of driver movement which lies between the driver'"'"'s seat or the standing work position and the control panel.

6. Building machine according to claim 5, wherein the presence detection system is configured to shift the range of driver movement horizontally depending on the adjustment of the driver'"'"'s seat.

7. Building machine according to claim 6, wherein the sensor is configured to detect the distance between the sensor and the operator, wherein the distance defines a starting value.

8. Building machine according to claim 7, wherein the presence detection system is configured to detect whether the starting value determined by the sensor is within the range of driver movement.

9. Building machine according to claim 7, wherein the presence detection system is configured to determine on the basis of the starting value a constant tolerance range around the starting value.

10. Building machine according to claim 9, wherein the sensor is configured to detect whether the operator is within the tolerance range.

11. Building machine according to claim 9, wherein the presence detection system is configured to send warning messages to the operator when the operator approaches a limit of the tolerance range.

12. Building machine according to claim 9, wherein the presence detection system is configured to stop the operation of the building machine when the operator leaves the tolerance range.

13. Building machine according to claim 1, wherein the presence detection system can be activated and/or switched off by an ignition key or by a main power controller.

14. 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:

activating a 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, and

checking whether the distance is within a tolerance range.

15. Method according to claim 14, wherein all of the functions of the building machine are available as long as the distance determined by the sensor is within the tolerance range.

16. An operator safety system for a road building machine comprising (i) a control panel for the safety system, (ii) an operating position located on the machine, and (iii) a sensor integrated into the control panel and configured to detect whether the machine operator is in the operating position.

17. The operator safety system of claim 16 wherein the sensor is a member selected from the group consisting of inductive, capacitive , infra-red or ultra-sonic sensors.

18. The operator safety system of claim 16 wherein the sensor is configured to signal the operator when the operator moves outside of a predetermined tolerance range.