Self-propelled working robot having horizontally movable work assembly retracting in different speed based on contact sensor input on the assembly
First Claim
1. A self-propelled working robot comprising:
- a traveling assembly having a wheel rotating on a floor surface;
a working assembly for doing work on the floor surface, wherein the working assembly is attached to the traveling assembly so that the working assembly is movable in a left-right direction with respect to the traveling assembly;
a moving mechanism for moving the working assembly with respect to the traveling assembly so as to change a positional relationship between the traveling assembly and the working assembly;
a first contact sensor provided in the working assembly for detecting a contact of the obstacle with a front surface of the working assembly;
a second contact sensor provided in the working assembly for detecting a contact of the obstacle with a side surface of the working assembly; and
means for controlling a travel of the traveling assembly, for controlling the moving mechanism to move the working assembly left and right at a first retraction speed based on a detection signal from the first contact sensor, and for controlling the moving mechanism to move the working assembly left and right at a second retraction speed, being lower than the first retraction speed, based on a detection signal from the second contact sensor.
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Abstract
The present invention relates to a self-propelled working robot, including a first distance sensor 4a and a second distance sensor 4b (4c) for measuring the distance to an obstacle W in front of the robot. The robot includes first determination means for comparing a first measured distance Dc to the obstacle obtained by the first distance sensor 4a with a predetermined first threshold value to determine the proximity to the obstacle W, second determination means for comparing a second measured distance Dr (DL) to the obstacle W obtained by the second distance sensor 4b (4c) with a predetermined second threshold value to determine the proximity to the obstacle, and changing means for changing the first or second threshold value based on information regarding an inclination angle of the obstacle W obtained from the first and second measured distances.
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Citations
3 Claims
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1. A self-propelled working robot comprising:
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a traveling assembly having a wheel rotating on a floor surface; a working assembly for doing work on the floor surface, wherein the working assembly is attached to the traveling assembly so that the working assembly is movable in a left-right direction with respect to the traveling assembly; a moving mechanism for moving the working assembly with respect to the traveling assembly so as to change a positional relationship between the traveling assembly and the working assembly; a first contact sensor provided in the working assembly for detecting a contact of the obstacle with a front surface of the working assembly; a second contact sensor provided in the working assembly for detecting a contact of the obstacle with a side surface of the working assembly; and means for controlling a travel of the traveling assembly, for controlling the moving mechanism to move the working assembly left and right at a first retraction speed based on a detection signal from the first contact sensor, and for controlling the moving mechanism to move the working assembly left and right at a second retraction speed, being lower than the first retraction speed, based on a detection signal from the second contact sensor. - View Dependent Claims (2, 3)
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Specification