Wireless Beverage Dispenser Sold-Out Detection via Hall Effect Sensor
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Solution Overview
Problem
Current systems for detecting a sold-out state in beverage dispensers are costly, bulky, and prone to inaccuracies due to the use of pneumatic switches, which require extensive installation time and are susceptible to mechanical failures and tolerance issues.
Innovation Solution
A wireless detection system that monitors the current flowing through an electronically actuated valve, using a detector such as a Hall Effect sensor to produce an electrical output based on the magnetic field created by the solenoid, and a control system to compare this output to threshold data to determine the sold-out state of a source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pneumatic switches are used to detect sold-out state, then detection function is achieved, but device complexity and installation time increase
Solution Approach 1:
The patent replaces mechanical pneumatic switches with a magnetic field-based detection system using Hall Effect sensors. The solenoid valve's magnetic field is monitored to detect armature position and determine sold-out states, eliminating mechanical contacts and complex pneumatic installation while maintaining detection accuracy.
Solution Approach 2:
The patent introduces a Hall Effect sensor as an intermediary device that indirectly detects the solenoid valve's armature position through magnetic field changes. This intermediary approach allows contactless detection, reducing mechanical wear and simplifying installation compared to direct mechanical switch contacts.
2Reliability
If pneumatic switches are used to detect sold-out state, then detection function is achieved, but cost and maintenance increase due to mechanical failures
Solution Approach 1:
The patent eliminates mechanical switch contacts by using magnetic field sensing. The Hall Effect sensor detects the solenoid's magnetic field changes without physical contact, removing wear-prone mechanical components that require maintenance and replacement, thereby improving reliability and reducing maintenance needs.
Solution Approach 2:
The patent uses inexpensive electronic sensors and control circuitry instead of durable but costly mechanical pneumatic switches. The electronic components are cheaper to replace if needed and have no moving parts that wear out, effectively reducing long-term maintenance costs and improving reliability.
3Ease of operation
If wireless detection system is implemented, then installation complexity is reduced, but new technology integration is required
Solution Approach 1:
The patent designs the wireless detection system to leverage existing solenoid valve magnetic fields for both their original control function and the new detection function. The Hall Effect sensor serves multiple purposes: monitoring armature position, detecting sold-out states, and potentially tracking usage patterns, reducing the need for separate dedicated detection hardware.
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
This solution provides a low-cost, no-contact, and accurate method for detecting sold-out states in beverage dispensers, reducing installation complexity and avoiding mechanical failures, while enabling seamless integration with existing systems and potential integration into the Internet of Things (IoT).
Implementation Method 1
A detection device for detecting that a source is sold-out for a beverage dispenser, the beverage dispenser dispensing from the source via a valve controlled by a solenoid
Implementation Method 2
where the solenoid creates a magnetic field when dispensing from the valve
Implementation Method 3
A detector is coupled to the circuit board, where the solenoid creates a magnetic field when dispensing from the valve, and where the detector detects the magnetic field created by the solenoid and consequently produces an electrical output
Data Source
AI summary
A detection device for detecting that a source is sold-out for a beverage dispenser, the beverage dispenser dispensing from the source via a valve controlled by a solenoid. A circuit board is configured to be positioned on the valve proximal to the solenoid. A detector is coupled to the circuit board, where the solenoid creates a magnetic field when dispensing from the valve, and where the detector detects the magnetic field created by the solenoid and consequently produces an electrical output. A control system is coupled to the circuit board in communication with the detector. The control system is configured to access threshold data and to compare the electrical output of the detector to the threshold data. The control system indicates that the source is sold-out based upon the comparison of the electrical output to the threshold data.