| 摘要 |
A guidance system for a self-advancing vehicle such as a floor washing machine is provided in an arrangement which does not spoil the beauty of, for example, a floor surface, which can be reused multiple times, which is low in cost and which more reliably follows a guidance line. A guidance line is drawn with a luminous material or with a coating material mainly consisting thereof along a predetermined traveling path on a floor surface. The guidance line is drawn on the floor surface with a mixture in which the luminous material is dissolved or dispersed in a solvent. Alternatively, a mixture in which the luminous material is mixed with a coating agent such as floor polish or wax is applied to the floor surface to draw the guidance line. The luminous material is, for example, an ultraviolet-absorbing material, an infrared-absorbing material or a visible light-absorbing material. A self-advancing floor washing machine using the present invention comprises a traveling device with two casters and two independent drive wheels, the latter of which are guided by a combination of one or more photosensors which track the guidance line and send a signal to a control unit that controls the drive wheels. Based on the signals from the photosensors, the machine is guided along the guidance line.
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