Multi-Sensor Mass Detection for Vibration-Resistant Precision Weighing
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Solution Overview
Problem
Existing mass detection technologies, such as volume and weight sensors, are limited by their sensitivity and precision due to mechanical vibration and ambient temperature changes, leading to inaccurate measurements of materials.
Innovation Solution
A mass detection device utilizing a combination of at least two independent sensors, including an electromagnetic weighing sensor and a stress weighing sensor, to compare and calibrate measurement results, enhancing precision by reducing the impact of external factors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single volume sensor or weight sensor is used for measurement, then the device complexity is low, but the measurement precision is limited due to linearity and sensitivity constraints
Solution Approach 1:
The patent divides the measurement function into multiple independent sensor assemblies, where each assembly contains sensors of different types (first type and second type). This segmentation allows each sensor to contribute differently to the overall measurement, improving precision while distributing the complexity across modular units.
Solution Approach 2:
The patent combines multiple types of sensors (volume sensors and weight sensors) within the same sensor assembly to measure the same material. By merging different measurement approaches (volume-based and weight-based) into a unified system, the patent achieves higher measurement precision through data fusion and cross-validation.
2Measurement precision
If traditional linear sensors are used, then the device structure is simple, but the sensitivity is limited by the linear mechanism
Solution Approach 1:
The patent replaces traditional mechanical linear sensors with a combination of volume sensors and weight sensors that use different physical principles (volume displacement and gravitational force). This substitution eliminates the sensitivity limitations of linear mechanical mechanisms while maintaining structural simplicity through non-mechanical sensing approaches.
3Reliability
If a single sensor is used for measurement, then the device is simple to operate, but external factors like vibration and temperature affect sampling precision
Solution Approach 1:
The patent implements a feedback mechanism where the processor compares measurements from multiple sensors and uses threshold-based logic to determine the final mass value. This feedback loop allows the system to identify and compensate for measurements affected by external factors like vibration or temperature, improving reliability while maintaining operational simplicity.
Solution Approach 2:
The patent changes the measurement parameters by using different sensor types that respond differently to environmental factors. Volume sensors and weight sensors have different sensitivities to vibration and temperature, so by measuring the same material with different parameters, the system can cross-validate results and filter out environmental noise.
4Measurement precision
If multiple sensors are used to improve precision, then measurement accuracy increases, but the device complexity increases
Solution Approach 1:
The patent implements a self-service mechanism where the sensor assembly automatically performs cross-validation and error correction without user intervention. The processor autonomously compares measurements from multiple sensors, applies threshold-based logic, and determines the final mass value, maintaining operational simplicity while achieving high precision through automated multi-sensor processing.
Data Source
AI summary
The mass detection device includes a processor; at least one sensor assembly at least including a first sensor and a second sensor; the sensor assembly is configured to be connected to the processor and output a first sensing information and a second sensing information related to a mass of an object to be measured; wherein the processor is configured to acquire the first sensing information and the second sensing information to determine an initially measured mass of the object to be measured by each sensor, and according to a comparison between a selected initially measured mass of the object to be measured and a first set threshold and a comparison between an absolute value of a difference in the initially measured mass of the object to be measured by each sensor and a second set threshold, to determine a final mass of the object to be measured.