Tabletop Crime Scene Training Device Using Grid Overlay
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Solution Overview
Problem
Current teaching tools for police investigations, especially in online courses, fail to provide realistic three-dimensional crime scene training, as they are software-based and lack the ability to compare photographs directly to sketches, and setting up real crime scenes with lab equipment is costly and impractical.
Innovation Solution
A tabletop teaching device with a box containing a printout of a scene, a grid overlay, and miniature items allows students to practice photographing and sketching crime scenes in three dimensions, enabling accurate measurements and recreation of scenes, and comparison of photographs to sketches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If real crime scenes with lab equipment are set up for training, then training realism and measurement precision are improved, but cost and device complexity increase significantly
Solution Approach 1:
The patent creates a simplified copy of a crime scene using a box with a printed scene image on the bottom, miniature items representing evidence, and grid overlays. This copy allows students to practice measurement and sketching techniques without requiring actual crime scenes or expensive lab equipment, thus maintaining measurement precision while dramatically reducing device complexity and cost.
Solution Approach 2:
The crime scene training device is segmented into discrete components: a box container, printed scene image, grid overlay sheets, and miniature item sets. This segmentation allows the complex training system to be broken down into simple, inexpensive, and easily replicable parts that can be used in online and offline courses.
2Ease of operation
If software-based teaching products are used, then ease of operation and accessibility are improved, but training realism and three-dimensional visualization capability deteriorate
Solution Approach 1:
The patent transitions from two-dimensional software-based training to a three-dimensional physical model within a box. The printed scene image on the box bottom provides a 2D representation, while the grid overlays and miniature items add vertical and spatial dimensions, enabling students to practice photographing and sketching techniques in a realistic 3D environment that can be accessed both online and offline.
3Reliability
If real crime scenes are used for training, then training realism is improved, but loss of time and logistical complexity increase
Solution Approach 1:
The crime scene training scenarios are prepared in advance by pre-printing scene images on the box bottoms and pre-positioning miniature items in predetermined locations. This preliminary action eliminates the need for students to spend time setting up actual crime scenes, allowing them to immediately begin practicing measurement and sketching techniques while maintaining training realism.
Data Source
AI summary
A tabletop teaching device and a method of using the same may include a box having an interior housing, a top and a floor. The box may include within the interior housing, at least one printout of a scene placed on the floor of the box, at least one printout of a grid placed over the at least one printout of a scene, and at least one miniature item placed above the at least one printout of a grid, wherein each miniature item represents a potential victim, a fixed point, an object item, or a potential weapon. An instructor can then place a potential victim miniature item and a fixed point miniature item spaced apart along the at least one grid printout so as to instruct a first student to determine distances and angles between the potential victim utilizing the grid of the at least one printout of a grid.