Solar-Powered Compost Drop Box with RFID Access Control

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Solution Overview

Problem

In urban areas, the lack of space and proximity to composting facilities hinders effective food waste composting, leading to issues like excess odor, rodents, and irritated neighbors due to inadequate waste management.

Innovation Solution

A community compost management system comprising a solar-powered secure compost drop box, a mobile app for user access and information, and network server software for managing access and pick-up operations, utilizing RFID, Bluetooth, or NFC for electronic communication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional composting facilities are used in urban areas, then composting can be performed, but the facilities are too far away and lack of space makes composting difficult

Engineering Contradiction:
Improvecomposting accessibilityVSAvoiddistance to composting facility
Core Design Contradiction:
Ease of operationVSLength of stationary object

Solution Approach 1:

The system divides the composting service into distributed drop boxes placed throughout the neighborhood rather than relying on a single remote facility. Each drop box is an independent access point that segments the service delivery network, allowing residents to compost at multiple convenient locations within their vicinity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system transitions from a centralized composting model to a distributed network model by adding the spatial dimension of multiple drop box locations. This dimensional expansion from one central facility to many distributed points enables better coverage and accessibility for urban residents.

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

2Object-affected harmful factors

If composting is not performed in urban areas, then space constraints are avoided, but excess odor, rodents, and wildlife problems occur

Engineering Contradiction:
Improveodor and pest controlVSAvoidcomposting rate
Core Design Contradiction:
Object-affected harmful factorsVSProductivity

Solution Approach 1:

The system extracts food waste from residential areas and transports it to centralized composting facilities through the network of drop boxes. This extraction mechanism removes the harmful effects (odor, rodents) from the urban environment while maintaining composting productivity by collecting waste efficiently and transporting it to appropriate processing locations.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The drop boxes serve as intermediary structures between residents and the centralized composting facility. These intermediaries provide convenient access points for waste deposition while acting as buffer zones that prevent direct contact between residents and the composting process, thereby managing odor and pest issues effectively.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If secure access control is implemented for compost drop boxes, then theft and misuse are prevented, but access management complexity increases

Engineering Contradiction:
Improvesecure access controlVSAvoidaccess management system
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The system implements self-service access control where users authenticate themselves at the drop boxes using their own identification and credentials. This self-service mechanism reduces the need for complex centralized authentication systems and manual access management, thereby maintaining security while simplifying the overall system architecture.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system replaces complex mechanical access control mechanisms with electronic and automated systems. Digital authentication, RFID cards, or mobile app-based access control replaces physical locks and manual key management, reducing mechanical complexity while enhancing security and ease of use.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

4Productivity

If monitoring and management software is deployed, then access and collection operations are optimized, but system cost and complexity increase

Engineering Contradiction:
Improvecollection operation efficiencyVSAvoidsoftware system complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The monitoring software implements feedback mechanisms that track drop box usage, fullness status, and collection history. This feedback enables the system to automatically optimize collection schedules and routes based on actual data, improving productivity while keeping the software complexity manageable through rule-based automation rather than complex algorithms.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system uses parameter changes in the software, such as adjusting collection frequencies and routes based on usage patterns, rather than implementing complex adaptive systems. This approach optimizes operations through simple parameter adjustments and threshold-based decisions, reducing software complexity while maintaining effectiveness.

Inventive Principle:
Principle #35Parameter changes

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

The system provides a convenient, secure, and organized method for composting in urban areas, reducing odors and pest issues by enabling efficient collection and management of food waste, improving neighborhood conditions.

Implementation Method 1

The receptacle can be solar powered

Methodology Applied
Scientific EffectSolar energy conversion: Photovoltaic Effect

Implementation Method 2

The user mobile device can access or open the solar-powered secure compost drop box via an RFID (radio frequency identification), Bluetooth sensor, near-field communication protocol (NFC)

Methodology Applied
Scientific EffectRFID radio frequency identification:

Implementation Method 3

The user mobile device can access or open the solar-powered secure compost drop box via an RFID (radio frequency identification), Bluetooth sensor, near-field communication protocol (NFC)

Methodology Applied
Scientific EffectNear-field communication:

Data Source

PatentUS20240189874A1Community compost management system
Publication Date: 2024.06.13 BIG BELLY SOLAR INC
  • US20240189874A1 patent drawing
  • US20240189874A1 patent drawing
  • US20240189874A1 patent drawing

AI summary

A system includes a solar-powered secure receptacle comprising a control system, a scanning module in communication with the control system, a wireless communication device, and a lockable hopper in communication with the control system; a network device in communication with the solar-powered secure receptacle via the wireless communication device, the network device configured to manage access allowance for users of the solar-powered secure receptacle via mobile devices; and a user application downloadable onto the mobile devices, wherein the user application is configured: to present to users on the mobile devices a location and availability of the solar-powered secure receptacle; to unlock the lockable hopper in the solar-powered secure receptacle using the scanning module; to present information what items can be placed in the solar-powered secure receptacle; and to report issues with the solar-powered secure receptacle. The receptacle can be used for composting or receiving and processing compost material.