Three-Point Mounting Base for Total Station and Laser Scanner

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Solution Overview

Problem

The existing surveying instruments face challenges in easily mounting a two-dimensional laser scanner to a total station due to the difference in devices, requiring precise positioning and taking significant time, which is inefficient and costly.

Innovation Solution

A surveying instrument comprising a total station with a mounting base fixed at three points and a two-dimensional laser scanner also fixed at three points, incorporating horizontal and vertical rotation units, distance measuring components, and a control module for three-dimensional measurement, along with a method for calibrating the system using reference measuring points to facilitate accurate and efficient assembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the two-dimensional laser scanner is mounted to the total station with precise positioning to ensure measurement accuracy, then the measurement precision is improved, but the mounting time and operational complexity increase

Engineering Contradiction:

Improvemeasurement accuracyVSAvoidmounting time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The mounting base is pre-designed with three fixing points that correspond to three mounting holes on the total station, and the laser scanner is pre-positioned on the mounting base. This preliminary arrangement of mounting structures eliminates the need for complex on-site positioning and alignment, allowing for quick attachment while maintaining measurement accuracy

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The mounting base serves multiple functions: it provides a stable mounting platform for the laser scanner, ensures proper positioning relative to the total station through three fixed points, and facilitates easy attachment and detachment. This multi-functional design simplifies the mounting process while maintaining precision

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Measurement precision

If the two-dimensional laser scanner is mounted to the total station with complex positioning to ensure proper alignment, then the measurement accuracy is improved, but the device complexity and operational difficulty increase

Engineering Contradiction:

Improvealignment accuracyVSAvoidmounting ease

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The mounting base acts as an intermediary component between the total station and the laser scanner. It simplifies the connection by providing a standardized interface with three fixing points, eliminating the need for complex direct alignment between the two devices

Inventive Principle:

Principle #24Intermediary (Mediator)

3Stability of the object's composition

If the mounting base is designed with high rigidity to maintain stability, then the measurement stability is improved, but the influence of mounting base deformation increases and manufacturing complexity increases

Engineering Contradiction:

Improvemounting stabilityVSAvoiddeformation control

Core Design Contradiction:

Stability of the object's compositionVSManufacturing precision

Solution Approach 1:

The mounting base is designed with three specific fixing points that provide sufficient local stability for accurate measurement, rather than requiring the entire base to be highly rigid. This localized reinforcement at critical mounting points achieves stability while reducing overall manufacturing complexity and minimizing deformation issues

Inventive Principle:

Principle #3Local quality

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This configuration allows for easy and accurate mounting of the two-dimensional laser scanner to the total station, reducing the influence of mounting base deformation and improving workability, while allowing for the acquisition of three-dimensional point cloud data with enhanced accuracy and reduced manufacturing costs.

Implementation Method 1

a first distance measuring component, for sighting a predetermined measuring point, emitting a first distance measuring light, and performing a distance measurement

Methodology Applied

Scientific EffectTime of flight: Time of Flight

Implementation Method 2

a scanning mirror for deflecting the second distance measuring light within a vertical plane

Methodology Applied

Scientific EffectLight reflection: Reflection

Data Source

PatentUS11105901B2Surveying instrument and method for assembling total station and two-dimensional laser scanner

Publication Date: 2021.08.31 TOPCON CORPORATION

AI summary

Provided is a surveying instrument comprises a total station, a mounting base which is fixed on an upper surface of the total station at three points, and a two-dimensional laser scanner which is fixed on an upper surface of the mounting base at three points, wherein the total station is configured to perform a three-dimensional measurement of a measuring point by a first distance measuring light, wherein the two-dimensional laser scanner is configured to acquire point cloud data along a scanning line by a second distance measuring light.