Work Vehicle Cab Protruding Air Conditioner Dual Camera Surveillance

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Solution Overview

Problem

In mining sites with height differences, existing surveillance systems cannot simultaneously visualize the ground behind and the area above a work vehicle, limiting operational awareness.

Innovation Solution

A work vehicle design incorporating a protruding air conditioner that houses two image pick-up apparatuses with inclined optical axes, allowing simultaneous visual recognition of the rear and upper areas, while maintaining air flow efficiency by directing air away from the cameras.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If a single surveillance camera is used to monitor the rear of the work vehicle, then the ground in the rear can be visually recognized, but the area above the work vehicle cannot be simultaneously recognized

Engineering Contradiction:
Improvevisual recognition coverageVSAvoidcamera arrangement
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The surveillance function is segmented into two separate image pick-up apparatuses: a first camera for capturing the ground behind the vehicle and a second camera for capturing the area above the vehicle. This segmentation allows each camera to be optimized for its specific monitoring zone, resolving the contradiction between comprehensive visual coverage and system complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The solution transitions from a single-camera horizontal monitoring approach to a two-camera system with vertical dimension integration. The second camera is positioned above the first camera with its optical axis inclined upward, adding vertical surveillance capability to complement the horizontal ground monitoring, thereby achieving comprehensive coverage without excessive complexity.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Productivity

If the air conditioner is designed with a fan and heat exchanger for efficient air flow, then cooling performance is improved, but space for arranging image pick-up apparatuses is reduced

Engineering Contradiction:
Improveair conditioning efficiencyVSAvoidspatial arrangement
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The air conditioner housing structure serves multiple functions: it provides cooling through the fan and heat exchanger, while simultaneously serving as a mounting platform for both image pick-up apparatuses. The top cover of the air conditioner is designed to accommodate the cameras, integrating the surveillance system with the existing air conditioning structure without compromising either function.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The image pick-up apparatuses are nested within or mounted on the air conditioner housing structure. The first camera is arranged in the rear of the fan, and the second camera is positioned above the first camera, both utilizing the air conditioner's structural space. This nesting approach allows efficient use of available space while maintaining air conditioning performance.

Inventive Principle:
Principle #7Nested doll (Nesting)

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

Enables simultaneous visual recognition of the ground behind and the area above the vehicle, improving operational awareness without reducing air conditioner airflow volume.

Implementation Method 1

The air conditioner includes a heat exchanger, a top cover, and a fan

Methodology Applied
Scientific EffectHeat exchange: Heat Exchanger

Implementation Method 2

The fan is arranged between the heat exchanger and the top cover

Methodology Applied
Scientific EffectForced convection: Forced Convection

Data Source

PatentUS9702113B2Work vehicle
Publication Date: 2017.07.11 KOMATSU LTD
  • US9702113B2 patent drawing
  • US9702113B2 patent drawing
  • US9702113B2 patent drawing

AI summary

A work vehicle has a cab. A protruding portion is located on an upper side of the cab and protrudes rearward relative to a rear portion of the cab. A surveillance camera is arranged on a rear side of the protruding portion. A surveillance camera is arranged above the surveillance camera, and an optical axis is inclined posterosuperiorly relative to an optical axis of the surveillance camera.