| 摘要 |
<p>This laser surveying device is equipped with: a leveling unit (3) that has a leveling motor; a light source unit (14) that emits a laser beam; a projection optical system that is provided to the leveling unit and that radiates the laser beam; a power source unit that supplies power to each constituent part; a control unit (7) that controls the driving of each constituent part; a recording unit (26); a tilt detection means (11) that is provided to the leveling unit and that detects the leveling state; a rotational frequency detection means (13) that detects the rotational frequency of the motor; light-source detection means (16a, 16b) that detect the light-emission state of the light source unit; a voltage detection means (24) that detects the voltage output by the power source unit; and an anomaly detection unit that detects an operation anomaly. The control unit monitors the presence/absence of anomalies by means of the anomaly detection means, samples the detection signal from each detection means at predetermined time intervals, and stores a detection signal group as sampling data chronologically in the recording unit. When the stored sampling data exceed a predetermined amount, the sampling data are deleted from the oldest entries and are sequentially overwritten by new sampling data. When at least one monitored detection signal indicates an anomaly, sampling data within a predetermined range of time with the point of time at which the anomaly was indicated as the base point are disqualified from being deleted and are saved as data for anomaly cause analysis.</p> |
