Waste Sorting Bin With Object Holding for Mixed-Item Separation
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Solution Overview
Problem
Existing waste sorting technologies are inefficient, costly, and user-dependent, leading to contamination and high operational costs due to bulk collection and manual sorting, with smart bins and reverse vending machines requiring single-item disposal and offering incentives to encourage use.
Innovation Solution
A position-based waste sorting apparatus and method using object detection and holding mechanisms to classify and sort multiple waste items simultaneously, employing a tilting or displacing mechanism to direct items into separate receptacles based on material type, minimizing user interaction and reducing system footprint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual waste sorting is used, then flexibility and adaptability are maintained, but labor intensity is high and sorting efficiency is low
Solution Approach 1:
The waste sorting apparatus divides the sorting process into multiple stages: pre-sorting by material type using optical sensors, secondary sorting by density using air flow, and tertiary sorting by shape using mechanical arms. Each stage handles specific waste types, improving overall efficiency while keeping individual module complexity manageable.
Solution Approach 2:
The apparatus integrates multiple sorting functions into a single system that can handle various waste types (paper, plastic, metal, glass, organic) through different mechanisms (optical detection, air flow, mechanical sorting). This multi-functional approach increases productivity without requiring separate systems for each waste type.
2Productivity
If automated sorting machines are used, then sorting speed increases, but measurement precision of waste characteristics decreases
Solution Approach 1:
The system performs preliminary measurements of waste characteristics (size, shape, material composition) using optical sensors and cameras before the actual sorting occurs. This advance data collection enables precise control of sorting parameters and ensures accurate classification while maintaining high sorting speed through automated decision-making.
Solution Approach 2:
The apparatus continuously monitors waste characteristics during the sorting process and adjusts sorting parameters in real-time based on detected properties. Optical sensors provide feedback on material composition while mechanical sensors provide feedback on physical properties, enabling precise adaptation to each waste item's characteristics without reducing sorting speed.
3Volume of stationary object
If waste is compacted before sorting, then storage space is reduced, but energy consumption increases
Solution Approach 1:
The system performs preliminary sorting and separation of waste materials before compaction, organizing waste into distinct categories and reducing mixed waste volume. This pre-organization reduces the energy required for subsequent compaction while maintaining space efficiency, as sorted waste requires less force to compact compared to mixed waste.
Solution Approach 2:
The apparatus adjusts compaction parameters (pressure, density, compaction speed) based on the type and composition of waste being processed. By optimizing these parameters for each waste category, the system achieves effective compaction and space reduction while minimizing energy consumption compared to uniform high-pressure compaction of all waste types.
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 efficient, compact, and automated sorting of multiple waste types without user intervention, reducing contamination and operational costs, and allowing for reward systems to encourage proper disposal.
Implementation Method 1
an optical sensor that detects a material type of the waste object
Implementation Method 2
a blowing unit that blows air to a target position of the waste object among the plurality of waste objects
Data Source
Figure 1a
Figure 1b
Figure 2
AI summary
A waste sorting apparatus is disclosed that comprises: - a receiving compartment for receiving at least one object disposed by a user; - an object detection system associated with the receiving compartment and configured to classify the object in one of a plurality of predetermined types of object; and - a sorting system associated with the receiving compartment arranged for selectively directing the object to a respective one of a plurality of collecting receptacles based on the classification of the object, wherein the object detection system is configured to identify the location of the object in the receiving compartment, and the sorting system includes holding devices for holding one or more object in the receiving compartment when selectively directing one or more other objects to a respective destination collecting receptacle, in case multiple objects of different types are detected in the receiving compartment.