Vibrating Plate Pill Dispenser with Self-Calibration
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Solution Overview
Problem
Existing pill dispensing systems face challenges with reliability and maintenance due to dust buildup, electrostatic charges, and the need for frequent calibration, especially when handling a variety of pill sizes and shapes, which affects accuracy and longevity.
Innovation Solution
A pill dispenser with a vibrating plate and microcontroller that uses conductive materials to ground out electrostatic charges, incorporates multiple singulation stages for accurate counting, and employs self-calibration to adapt to wear and environmental changes, reducing maintenance needs and improving accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional pill dispensing mechanisms are used to handle various pill sizes and shapes, then the device can perform dispensing function, but the reliability and counting accuracy deteriorate due to dust buildup and electrostatic charges
Solution Approach 1:
The patent applies the principle of converting harmful electrostatic charges into beneficial effects by using conductive materials and ionization. Conductive materials ground out electrostatic charges that cause dust attraction, while ionization generators create ionized air to actively neutralize charges. This transforms the harmful electrostatic phenomenon into a beneficial dust-control mechanism, directly addressing the reliability issue caused by dust buildup on optical sensors.
Solution Approach 2:
The patent creates an inert environment by using ionized air to neutralize electrostatic charges throughout the pill dispensing path. The ionization generators produce positive and negative ions that attach to dust particles and pill surfaces, creating a charged atmosphere that prevents dust accumulation. This inertified environment (free of harmful electrostatic charges) protects optical sensors and maintains counting accuracy over time.
2Adaptability or versatility
If multiple dispensing mechanisms are designed to accommodate different pill types, then the device can handle various pills, but the device complexity and maintenance requirements increase
Solution Approach 1:
The patent implements universality by designing a single dispensing mechanism that can handle multiple pill types through adjustable parameters rather than multiple dedicated mechanisms. The vibratory feed chute, helical transport tube, and vibrating plate can be adjusted to accommodate different pill sizes and shapes. This universal design eliminates the need for multiple specialized mechanisms, reducing device complexity and maintenance requirements while maintaining versatility.
Solution Approach 2:
The patent applies dynamics by making the dispensing mechanism adjustable and adaptable rather than fixed. The helical transport tube's pitch and diameter can be modified, the vibratory plate's frequency and amplitude can be adjusted, and the feed chute angles can be changed. These dynamic adjustments allow the same mechanism to handle various pill types without requiring physical reconfiguration or multiple dedicated mechanisms, thereby reducing complexity.
3Measurement precision
If frequent calibration and adjustments are made to maintain accuracy, then counting precision is maintained, but the loss of time and productivity decrease
Solution Approach 1:
The patent implements self-service through self-calibration capabilities. The system automatically adjusts and recalibrates its own parameters to maintain counting accuracy without requiring manual intervention. The microprocessor-controlled system can detect and compensate for wear, environmental changes, and pill variations automatically. This eliminates the need for frequent manual calibration and adjustments, reducing maintenance time while preserving measurement precision.
Solution Approach 2:
The patent applies feedback by incorporating sensors and microprocessor control that continuously monitor and adjust the dispensing process. Optical sensors detect pill passage and provide feedback to the microprocessor, which adjusts the vibratory plate frequency, helical tube rotation speed, and feed chute angles in real-time. This closed-loop feedback system maintains counting accuracy automatically, eliminating the need for frequent manual calibration and reducing downtime.
4Object-affected harmful factors
If conductive materials and ionization are used to reduce dust, then the harmful effects of electrostatic charges are reduced, but the use of energy and device complexity increase
Solution Approach 1:
The patent extracts the dust control function from the main dispensing mechanism by using separate conductive materials and ionization generators positioned strategically along the pill path. Rather than making the entire system complex, only specific critical areas (feed chute, transport tube, detection zone) are equipped with conductive coatings and ionization sources. This extracted approach targets electrostatic charge neutralization where it matters most, reducing overall energy consumption compared to a system-wide implementation.
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 achieves high counting accuracy, reduces dust accumulation, and minimizes maintenance by using conductive materials and self-calibration, ensuring reliable operation across different pill types and environmental conditions.
Implementation Method 1
a vibrating plate is disposed proximate the outlet. A drive mechanism is connected to the vibrating plate for imparting vibration thereto
Implementation Method 2
The utilization of pill dispensing machines has greatly increased since the aforementioned patent application was filed... pill dust buildup due to electro-static charge accumulation requires more frequent cleaning of the dispensers
Data Source
AI summary
A self-contained pill dispenser is disclosed. A housing is provided and a hopper for containing a plurality of pills is supported by the housing. A feed chute having a transport spiral therein is operatively connected to the hopper for receiving pills therefrom. The transport spiral has an outlet and controllable aperture. A vibrating plate is disposed proximate the outlet. A drive mechanism is connected to the vibrating plate for imparting vibration thereto. The drive mechanism can abruptly stop the vibration of the vibrating plate. A microcontroller is also operatively connected to the hopper, the transport spiral, and the drive mechanism. The system can self-calibrate the mechanism for counting and dispensing pills.