Back to results
US 2008/0304041 A1Published application
Measuring system
AssigneeTopcon Corporation
InventorsFumio Ohtomo, Kaoru Kumagai, Fumihiko Kamizono
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeTopcon Corporation
InventorsFumio Ohtomo, Kaoru Kumagai, Fumihiko Kamizono
Estimating the term…
A measuring system, comprising a surveying instrument for projecting a laser beam by rotary irradiation and a photodetection sensor device installed at a measuring point, wherein the surveying instrument comprises a first radio communication unit, the photodetection sensor device comprises a second radio communication unit, and communication can be performed between the surveying instrument and the photodetection sensor device, wherein the surveying instrument comprises an angle detecting means for detecting a horizontal angle in a projecting direction of the laser beam and a first arithmetic unit for controlling the angle detecting means based on a receiving signal from the first radio communication unit, and the photodetection sensor device comprises a photodetection unit for receiving the laser beam and a second arithmetic unit for performing transmission of a photodetection notifying signal to notify the receiving of the laser beam by the photodetection unit and also for performing transmission of a synchronization data by the second radio communication unit to the first radio communication unit, wherein the first arithmetic unit calculates a horizontal angle of the projection of the laser beam when the photodetection sensor device receives the laser beam based on the photodetection notifying signal and the synchronization data.
A measuring system, comprising a surveying instrument for projecting a laser beam by rotary irradiation and a photodetection sensor device installed at a measuring point, wherein said surveying instrument comprises a first radio communication unit, said photodetection sensor device comprises a second radio communication unit, and communication can be performed between said surveying instrument and said photodetection sensor device, wherein said surveying instrument comprises an angle detecting means for detecting a horizontal angle in a projecting direction of the laser beam and a first arithmetic unit for controlling said angle detecting means based on a receiving signal from said first radio communication unit, and said photodetection sensor device comprises a photodetection unit for receiving the laser beam and a second arithmetic unit for performing transmission of a photodetection notifying signal to notify the receiving of the laser beam by said photodetection unit and also for performing transmission of a synchronization data by said second radio communication unit to said first radio communication unit, wherein said first arithmetic unit calculates a horizontal angle of the projection of the laser beam when said photodetection sensor device receives the laser beam based on the photodetection notifying signal and the synchronization data.
A measuring system, comprising a surveying instrument for projecting a laser beam by rotary irradiation and a photodetection sensor device installed at a measuring point, wherein said surveying instrument comprises a first radio communication unit, said photodetection sensor device comprises a second radio communication unit, and communication can be performed between said surveying instrument and said photodetection sensor device, wherein said photodetection sensor device comprises a photodetection unit for detecting the laser beam, a second signal processing unit for preparing a photodetection notifying signal based on the detection of the laser beam by the photodetection unit, for synthesizing synchronization data with the photodetection notifying signal, and for detecting the synchronization data, and said second radio communication unit for transmitting the photodetection notifying signal to said surveying instrument, and wherein said surveying instrument comprises said first radio communication unit for receiving the photodetection notifying signal and said first signal processing unit for detecting synchronization data from the photodetection notifying signal, wherein said photodetection sensor device detects the synchronization data and the synchronization data is detected by said surveying instrument, and signal processing is synchronized between said photodetection sensor device and said surveying instrument.
Dependencies are inferred from the claim text.