5results about How to "Reduced measurement workload" patented technology

A large-size structural plane first-order and second-order fluctuation grading sampling measurement method belongs to the technical field of geotechnical engineering, and comprises the following steps: measuring the length of a structural plane along a shearing direction, determining a frequency demarcation point of first-order and second-order fluctuation components according to an empirical formula, and determining a sampling interval of the first-order fluctuation components, performing sparse measurement on the large-size structural surface; the method comprises the following steps: arranging a plurality of small-size measurement areas on a structural plane, obtaining a two-dimensional contour line or a three-dimensional structural plane morphology, extracting a second-order fluctuation component through frequency domain filtering, calculating a fluctuation angle statistical characteristic, evaluating a measurement error based on a confidence interval, and adaptively determining the measurement number of small-size structural planes; and establishing a random field model of the second-order fluctuating component, generating the second-order fluctuating component with the same size as the large-size structural plane, and superposing the second-order fluctuating component with the actually measured first-order fluctuating component to obtain a structural plane digital model. On the premise of guaranteeing the measurement precision, the number of measurement points and the measurement workload are reduced, and the applicability of large-size structural plane measurement engineering is improved.

This invention relates to the field of template pre-assembly and discloses a template pre-assembly method, comprising the following steps: Step 1: Prepare the site, a 3D model, and several templates and horizontal connectors. Determine the planar position of the templates on the site and set several targets on the site, measuring the target coordinates with a total station; Step 2: Import the target coordinates into 3D software and import the 3D model according to the target coordinate positions; Step 3: Assemble the first-layer template and measure the corner points of the template with a total station for coarse adjustment; Step 4: Measure the target coordinates with a 3D scanner, convert the site coordinates into point cloud coordinates, collect the point cloud data of the template, and establish a point cloud model; Step 5: Compare the 3D model and the point cloud model for 3D deviation and fine-tune the template; Step 6: Connect the horizontal connectors in pairs with bolts, and weld each pair of horizontal connectors between adjacent templates to save on-site measurement time.

The utility model provides a kind of multi-point backrest type velocity tube, comprising: multiple velocity probes, positive pressure connecting pipe and negative pressure connecting pipe, each velocity probe includes: positive pressure measuring pipe and negative pressure measuring pipe fixedly arranged back to back;The positive pressure measuring pipe and negative pressure measuring pipe are hollow pipe;The first end of the positive pressure measuring pipe and negative pressure measuring pipe is inclined plane hole;The positive pressure measuring pipe of each velocity probe is sequentially arranged in head and tail, the negative pressure measuring pipe of each velocity probe is sequentially arranged in head and tail;The tail end of two adjacent positive pressure measuring pipes is communicated via the positive pressure connecting pipe being arranged between the two, the tail end of two adjacent negative pressure measuring pipes is communicated via the negative pressure connecting pipe being arranged between the two.The multi-point backrest type velocity tube provided by the utility model is simple and reliable in structure, and can improve the efficiency of measuring the wind speed of wind powder pipeline.

The invention discloses an air conditioner indoor unit rapid installation positioning system and method, and the system comprises a base box, the junction of the bottom surface and the side surface of the base box is used as a first reference point of the lower right corner of an air conditioner indoor unit; the first level gauge is mounted on the base box; the first distance measuring sensor is mounted on the bottom surface and faces the ground; the second distance measuring sensor is installed on the side face, and the second distance measuring sensor is arranged towards the second wall body; the controller is mounted on the base box and is in signal connection with the first distance measuring sensor and the second distance measuring sensor; the display is mounted on the base box and connected to the controller; the orifice positioner comprises a horizontal baffle and a vertical baffle, the lower end of the vertical baffle is connected to one end of the horizontal baffle, the joint of the vertical baffle and the horizontal baffle serves as a second datum point of the outer wall trepanning, and a second level gauge is installed on the orifice positioner. The problem that the measurement workload is large in the traditional installation process of the split wall-mounted air conditioner indoor unit is solved.