Automated Checkweigher Validation via Static Scale Comparison
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing checkweigher validation methods require operator intervention, which can lead to skipped or improperly performed validation processes, and do not efficiently differentiate between changes in object weight and sensor characteristics over time.
Innovation Solution
Automated checkweigher validation systems and methods that minimize operator involvement by using a static scale connected to the checkweigher controller to transmit weight data and employing monitoring devices to automate the validation process, allowing for comparison of weights to ensure accurate readings without disrupting the conveyor line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual validation methods are used, then operator control over the validation process is maintained, but the validation process may be skipped or performed improperly
Solution Approach 1:
The checkweigher system performs self-validation by automatically comparing its weight measurements against reference weights stored in memory. The system independently executes the validation process without requiring operator collection, transport, or measurement of test objects, thereby ensuring consistent and reliable validation while reducing manual intervention.
2Measurement precision
If operator collection and transport of objects to static scale is required, then comprehensive weight data can be obtained, but time and resources are consumed
Solution Approach 1:
The patent replaces the mechanical process of manually collecting, transporting, and physically weighing objects with an electronic system. The checkweigher's controller automatically retrieves reference weight values from memory, compares them with current measurements, and determines validation status electronically, eliminating the time-consuming manual object handling process while maintaining measurement accuracy.
3Reliability
If periodic audit function is implemented, then validation compliance can be monitored, but additional operational complexity is introduced
Solution Approach 1:
The controller implements an automatic feedback mechanism that monitors validation status and generates alerts or notifications when validation is due or has failed. The system tracks validation timestamps, compares them against predetermined time intervals, and automatically notifies operators of compliance status, ensuring reliable validation monitoring without requiring complex external audit systems.
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 automated validation system ensures accurate and reliable weight measurements by eliminating the need for manual data collection and operator intervention, reducing the risk of validation failures and maintaining consistent sensor performance.
Implementation Method 1
Sensors typically used for this purpose include, for example, strain gauge load cells
Implementation Method 2
electromagnetic force restoration weigh cells
Data Source
AI summary
A system and method of validating checkweigher performance (weighing accuracy). The invention involves removing an object to be weighed from a conveyor prior to the object reaching a checkweigher to be validated, weighing the object on a static scale, reintroducing the object to the conveyor upstream of the checkweigher, weighing the object with the checkweigher, and comparing the two weight readings of the object to determine if the checkweigher is accurately weighing objects. Validation objects may be automatically removed from the conveyor by a transfer mechanism.