Touchless Palm Reader Dispenser for Hygiene Compliance Screening

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Solution Overview

Problem

Existing hand cleaner dispensers lack effective monitoring of hand hygiene compliance and biometric authentication, as they often require direct contact, which can lead to contamination and fail to ensure proper hand washing, and there is a need for a system to screen for fever without a simple solution.

Innovation Solution

A hand cleaner dispenser with a non-contact palm reader and thermometer that senses a user's hand proximity and temperature, allowing for biometric authentication and temperature measurement without direct contact, ensuring proper hand washing and initial fever screening.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a fingerprint reader bed is contacted by the user's finger or thumb for authentication, then biometric authentication is achieved, but contamination of the fingerprint reader bed occurs and may be transferred to subsequent users

Engineering Contradiction:

Improvebiometric authenticationVSAvoidcontamination

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces an optical scanning system as an intermediary between the user's hand and the authentication system. Instead of direct contact with a fingerprint reader bed, the system uses light to scan the hand and capture biometric data, thereby eliminating the contamination issue while maintaining authentication reliability

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces the mechanical contact-based fingerprint reader bed with a non-contact optical scanning system. This substitution eliminates the need for physical contact between the user's hand and the device surface, thereby preventing contamination while achieving the same biometric authentication function

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Loss of information

If a keypad or magnetic card system is used for activation, then user identification is achieved, but the system can be fooled by activation without actual hand washing

Engineering Contradiction:

Improvecompliance monitoringVSAvoidhand washing verification

Core Design Contradiction:

Loss of informationVSReliability

Solution Approach 1:

The patent incorporates sensors that provide feedback on whether the user's hand is in the correct position to receive dispensed material. This feedback mechanism ensures that activation is coupled with actual hand washing behavior, preventing misuse while maintaining compliance monitoring

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent combines multiple functions into a single system: user identification, hand position verification, and dispensing control. This multi-functional approach ensures that the system can verify both identity and actual hand washing compliance, preventing the loopholes present in simpler systems

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Ease of operation

If automated sensing is used to dispense without touching, then ease of operation is improved, but the ability to verify proper hand washing is lost

Engineering Contradiction:

Improvetouchless dispensingVSAvoidhand washing verification

Core Design Contradiction:

Ease of operationVSLoss of information

Solution Approach 1:

The patent combines multiple functions into a single system: touchless sensing for ease of operation, hand position detection, and dispensing control. This multi-functional approach ensures that the system maintains both user convenience and verification capability simultaneously

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 dispenser effectively monitors hand hygiene compliance and provides initial fever screening, reducing contamination risks and ensuring accurate biometric authentication and temperature measurement without direct contact.

Implementation Method 1

Since the deoxidized hemoglobin in the vein vessels absorb at least portions of the infrared light, when the infrared ray image is captured, the blood vessel pattern containing the veins is visible as a series of dark lines.

Methodology Applied

Scientific EffectInfrared light absorption: Absorption (EM radiation)