Measuring system

• US 7,564,538 B2
• Filed: 09/17/2007
• Issued: 07/21/2009
• Est. Priority Date: 09/27/2006
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Topcon
• Original Assignee: Kabushiki Kaisha Topcon
• Inventors: Sakimura, Ritsuo, Sinozaki, Hajime
• Primary Examiner(s): ALSOMIRI, ISAM A
• Application Number:
  US11/901,379
• Publication Number:
  US 20080074638A1
• Time in Patent Office: 673 Days
• Field of Search: 356 401- 515, 356/139, 356/1, 356/139.04, 356/139.05, 356/141.1
• US Class Current: 356/4.01
• CPC Class Codes: G01C 15/002 Active optical surveying means optical plumbing G01C15/105
• CPC Class Codes: G01C 3/08 Use of electric radiation detectors
• CPC Class Codes: G01S 17/36 with phase comparison between the received signal and the contemporaneously transmitted signal
• CPC Class Codes: G01S 17/42 Simultaneous measurement of distance and other co-ordinates indirect measurement G01S17/46
• CPC Class Codes: G01S 7/003 Transmission of data between radar, sonar or lidar systems and remote stations
• CPC Class Codes: G01S 7/4817 relating to scanning
• CPC Class Codes: G01S 7/497 Means for monitoring or calibrating

Abstract

The present invention provides a measuring system, which comprises a surveying device installed at a known point, at least one photodetection device to be installed at a measuring point, and a main arithmetic device; wherein the surveying device projects by rotary irradiation a reference plane forming laser beam including two or more fan-shaped laser beams with at least one of the fan-shaped laser beams tilted and a distance measuring light performs distance measurement by receiving a reflected distance measuring light, and performs communication of the distance measurement data between the photodetection device and the main arithmetic device; wherein the photodetection device calculates an elevation angle with respect to the surveying device based on a photodetection signal issued by receiving the reference plane forming laser beam, calculates an elevation position based on the elevation angle and the distance to the surveying device, and performs communication of distance measurement data and elevation position data at least with the main arithmetic device; and wherein the main arithmetic device communicates at least with the photodetection device among the surveying device and the photodetection device, and collects and records surveying data such as distance measurement data, elevation position data, etc. for each measuring point.

Claims

1. A measuring system, comprising a surveying device installed at a known point, at least one photodetection device to be installed at a measuring point, and a main arithmetic device;

wherein said surveying device comprises a laser beam projecting unit for projecting by rotary irradiation a reference plane forming laser beam including two or more fan-shaped laser beams with at least one of said fan-shaped laser beams tilted and a distance measuring light, a distance measuring unit for performing distance measurement by receiving a reflected distance measuring light from said photodetection device, and a radio communication unit for performing communication of the distance measurement data between said photodetection device and said main arithmetic device;

wherein said photodetection device comprises a reflection unit for reflecting the distance measuring light toward said surveying device, a photodetection unit for receiving the reference plane forming laser beam, a photodetection side control arithmetic unit for calculating an elevation angle with respect to said surveying device based on a photodetection signal issued when the reference plane forming laser beam is received by said photodetection unit and for calculating an elevation position based on the elevation angle and the distance to said surveying device, a photodetection side radio communication unit for performing communication of distance measurement data and elevation position data at least with said main arithmetic device among said main arithmetic device and other photodetection devices; and

wherein said main arithmetic device comprises a main radio communication unit being able to communicate at least with said photodetection device among said surveying device and said photodetection device, and a main storage unit for collecting and recording surveying data for each measurement point.

2. A measuring system according to claim 1, wherein said main arithmetic device has a main control arithmetic unit, wherein said main control arithmetic unit issues an instruction signal for starting measurement to said surveying device via said main radio communication unit and transmits position information of the measuring points to said photodetection device via said main radio communication unit.

3. A measuring system according to claim 2, wherein said photodetection device has a photodetection side display unit, wherein a guidance direction is displayed on said photodetection side display unit based on deviation of the measurement data of the photodetection device itself from the position information at the measuring point, and, when the position information of the measuring point conforms with the measurement data of the photodetection device itself, the distance measurement data and the elevation position data are transmitted to said main arithmetic device.

4. A measuring system according to claim 1, wherein said photodetection device receives distance measurement data transmitted from said surveying device at real time, and transmits the distance measurement data and the elevation position data to said main arithmetic device when the received distance measurement data conforms with the position information.

5. A measuring system according to claim 1, wherein said main arithmetic device has a main control arithmetic unit, wherein operation data is stored in said main storage unit, said main control arithmetic unit transmits a guidance information to said photodetection device based on the position information of the measuring point obtained from operation data and the result of distance measurement of said photodetection unit measured by said surveying device, and a guidance direction is displayed on a photodetection side display unit of said photodetection device.

6. A measuring system according to claim 1, wherein said main arithmetic device can select a first mode, a second mode, and a third mode;

and

in said first mode, an instruction signal for starting measurement is issued to said surveying device via said main radio communication unit, a position information at the measuring point is transmitted to said photodetection device via said main radio communication unit, said photodetection device receives distance measurement data transmitted from said surveying device at real time, and the distance measurement data and the elevation position data are transmitted to said main arithmetic device when the received distance measurement data conforms with the position information;

in said second mode, an instruction signal for starting measurement is issued to said surveying device via said main radio communication unit, a position information of the measuring point is transmitted to said photodetection device via said main radio communication unit, a guidance direction is displayed on a photodetection side display unit of said photodetection device based on deviation of the measurement data of said photodetection device itself from the position information of the measuring point, and, when the position information of the measuring point conforms with the measurement data of said photodetection device itself, the distance measurement data and the elevation position data are transmitted to said main arithmetic device; and

in said third mode, operation data is stored in said main storage unit, and a guidance information is transmitted to said photodetection device based on the position information of the measuring point obtained from the operation data and the result of distance measurement of said photodetection device determined by said surveying device, and a guidance direction is displayed on said photodetection side display unit.

7. A measuring system according to claim 1, wherein said surveying data comprises distance measurement data.

8. A measuring system according to claim 1, wherein said surveying data comprises elevation position data.