91results about "Permanant marks" patented technology

A surveying system having a total station integrated into an unmanned aerial vehicle communicates with a plurality of mobile communication stations that are located on known site coordinates. By locating the mobile communication stations on known coordinates, the location of the aerial vehicle is precisely triangulated and controlled. Construction drawings are loaded into the system, thereby allowing the vehicle to locate itself at specific points designated in the drawings for the marking of on-site construction grid lines.

The present invention relates to a radio frequency identification (RFID) tag installation system using a vehicle and method thereof. The RFID tag is installed on the road to provide a driver with position information and road information such as speed limit, road name. etc in his or her traveling region. By using our present invention, RFID tag can be installed with small manpower in short a time. The system uses two CCD cameras, two GPS receivers, an INS and a DMI, and includes: a vehicle position and yaw extractor by using the two GPS receivers; orientation extractor for the vehicle by using INS, a GPS/INS/DMI integrator for GPS outage and for INS error correction; two cameras interior/exterior orientation extractor for the CCD cameras; a target position extractor for finding 3-dimensional coordinates; a road information storage for supplying road information such as a speed limit and a rout number of a road; an RFID tag writer for inputting the information obtained from the target region position extractor and the road information storage; and an RFID tag installer for attaching the RFID tag on the road.

A system designed to identify survey markers that are obscured by an accumulation of dust and dirt or overgrowth of vegetation. The system provides for automatic detection of survey markers using passive radio frequency transponder technology to detect the immediate presence of a tagged survey marker and read additional unique identification data corresponding to said marker. The operator can be signaled audibly and/or visually when a tagged survey marker is detected. The transmitter and antennae are mounted in a handheld or portable unit. An integrated microprocessor performs the requisite algorithms needed to process the reply from one or more RFID (Radio Frequency Identification) tags and generate the alert signals for the operator alerts. Once the RFID tagged survey marker has been located, it can be cleared of accumulated dust, dirt and overgrowth of vegetation to make it visible for confirming the property boundary. Handheld RFID programmers are used to load or record important identification data in the attached tag, regarding latitude-longitude location, and other pertinent survey data.

The invention relates to a building detection structure, in particular to a building sedimentation observation method and structure. Multiple working base points are embedded into the outer wall surface of a building, three datum points and four auxiliary datum points are embedded into engineering foundations around the building, and the auxiliary datum points are observed through the three datum points to examine the relative stability of the datum points and the auxiliary datum points; the working base points are observed through the four auxiliary datum points to collect the eccentricity to determine the sedimentation condition. The building sedimentation observation method and structure have the advantages of being simple in structure, lower in construction cost, not prone to be influenced by engineering, weather changes and heat expansion and cold contraction, smaller in measuring error and the like.

A camera monitors positions on an external object having a beacon (1(i), i=1, 2, . . . , I; 130; 430) attached to it. The apparatus has at least one image sensor (120; 321, 322; 420; 520), an imaging optical element (101) for projecting light on the image sensor (120), and a processing unit (9). The imaging optical element (101) may be non-refractive and receives a light beam (5(i); 131) transmitted from the beacon (1(i); 130; 430) and transfers the light beam (5(i); 131) to the image sensor (120; 321, 322; 420; 520).

The image sensor (120; 321, 322; 420; 520) forms image data based on the received light beam (5(i); 131) and background light. The processing unit (9) processes the image data such that it filters image data components relating to the background light and renders image data components relating to the light beam.

A system for detecting localized ground position changes makes use of plurality of lighting units, each fixed to the ground. Each lighting unit comprises a positioning system and a transmitter for transmitting positioning information to a remote central processing unit. The positioning information from the plurality of fixed lighting units is processed to identify local ground position changes. The infrastructure of a networked lighting system in this way enables ground information to be determined, for example for detecting ground movement in response to natural events or man-made activities (such as tunneling, building, extraction of natural resources etc.).

An on-site pouring maintenance method of a survey monument in a high-latitude area and a low-temperature environment is characterized by comprising the following steps: (1) optimizing a cement variety; (2) choosing sand stones with small particle size, and appropriately reducing a water-cement ratio; (3) completing on-site pouring of the survey monument; (4) without taking out a template, directly backfilling with soil, so as to make flat with the ground; (5) preparing a bamboo pole support frame at a height of 3-5 cm above the standard surface; (6) covering the bamboo pole support frame with dry rice straws or stipa capillata linn and other hays with the thickness of 3-5 cm; (7) covering the rice straws with quick lime with the thickness of 5-10 cm, and allowing the quick lime to be separated by the rice straws; and (8) covering the quick lime material layer with a plastic thin film. The method has the advantages that with utilization of a theory that slaked lime and a large amount of heat are produced in a chemical reaction generated in a water absorption process of the quick lime, a heat preservation effect is played; the concrete coagulation time is greatly shortened, the maintenance function on the survey measurement is played, and a simple-operation, efficient and rapid pouring maintenance of the survey monument is achieved; and the method is low in price, simple and rapid, and efficient in heat release.

A survey monument comprises a conventional water hydrant with survey indicia or markings attached thereto. The survey indicia can be carried for example on a plate mounted on a flange bolt or attached to the operating nut of the hydrant. These survey monuments can be expanded upon and/or maintained in co-ordination with the expansion and maintenance of a municipality's water supply system. The hydrants can also be utilized in connection with any geographical information system to provide known reference points. The hydrants can also be utilized in connection with GPS devices to assist in localizing, initializing and calibrating the same.