Delayed Dispenser Activation for Over-Ingestion Control
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Solution Overview
Problem
Dispensing systems often fail to prevent excessive dispensing of sanitizing materials, leading to potential over-ingestion, particularly in environments like prisons, jails, and mental health facilities where controlling the quantity of dispensed materials is crucial.
Innovation Solution
The dispensing system incorporates a control mechanism with a movable actuation device and a control system that includes a pressure regulation mechanism and a sensor for detecting user proximity, which limits dispensing events within a predetermined time period to prevent excessive material release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the dispensing system allows free movement of the actuation device, then ease of operation is improved, but excessive dispensing and over-ingestion risk increase
Solution Approach 1:
The control system dynamically changes the mechanical properties of the actuation device based on dispensing history. After a dispense event, the actuation device transitions from a movable state (allowing operation) to a restrained state (preventing further actuation) for a predetermined time period, then returns to movable state. This dynamic transformation resolves the contradiction by allowing easy operation when needed while preventing excessive dispensing.
Solution Approach 2:
The control system monitors dispensing events and uses this feedback to control the mechanical restraint mechanism. When a dispense event is detected, the system activates the restraint mechanism to prevent additional actuations within the predetermined time period. This feedback loop ensures that the actuation device's operability is automatically adjusted based on actual dispensing occurrence, balancing ease of operation with over-ingestion prevention.
2Object-affected harmful factors
If the control system restrains the actuation device after dispensing, then over-ingestion risk is reduced, but ease of operation deteriorates
Solution Approach 1:
The restraint mechanism is not permanent but dynamic, automatically transitioning between restrained and unrestrained states. After the predetermined time period expires, the control system releases the restraint, restoring full operability to the actuation device. This ensures that while over-ingestion is prevented during the restraint period, normal operation is fully restored afterward, minimizing the impact on ease of operation.
Solution Approach 2:
The control system implements periodic restraint action rather than continuous restraint. The actuation device is restrained only for a specific time period after each dispense event, then becomes fully operational again. This periodic approach prevents over-ingestion during critical periods while maintaining ease of operation during non-critical periods, resolving the contradiction between safety and usability.
3Manufacturing precision
If the dispensing system implements delayed activation, then material control precision is improved, but device complexity increases
Solution Approach 1:
The control system uses electrical/electronic components (motor, control circuitry, sensors) to replace complex mechanical restraint mechanisms. The motor-driven restraint system provides precise control through electronic timing and positioning, achieving accurate dispensing quantity control without requiring elaborate mechanical linkages, cam mechanisms, or spring systems that would increase overall device complexity.
Solution Approach 2:
The control system automatically manages the restraint timing and duration based on detected dispensing events, without requiring external intervention or complex user programming. The system self-regulates the actuation device's operability state based on its own dispensing history, simplifying the control architecture while maintaining precise dispensing quantity control through automated delayed activation.
Data Source
AI summary
A dispensing system includes a container within which a material is contained and an actuation device movably supported with respect to the container. The actuation device is movable between a first position and a second position. The dispensing system includes a control system. The control system includes an engagement portion in movable engagement with the actuation device. The control system includes a control portion. As the actuation device is moved from the first position to the second position a first time, the control portion does not restrain movement of either the engagement portion or the actuation device. As the actuation device is moved between the first position and the second position a second time within a predetermined time period after the first time, the control portion restrains movement of at least one of the engagement portion or the actuation device.