Portable Scale Layout With Wireless Ranging and Level Calibration
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Solution Overview
Problem
Existing portable scales face challenges in high-precision measurement due to limitations in tape measure precision, bending issues, limited measuring range, and the need for auxiliary tools for vertical alignment, leading to reduced accuracy and increased complexity.
Innovation Solution
Integration of a weighing sensor and wireless ranging sensor within a housing, with the weighing sensor at the bottom and ranging sensor at the top, along with level meters for horizontal calibration, to ensure accurate and efficient weighing and ranging without interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a tape measure is used to measure size, then the portable scale can measure dimensions, but measurement precision is limited by scale markings and operator skills
Solution Approach 1:
The patent replaces the mechanical tape measure system with an optical/electronic laser ranging sensor system. The laser sensor emits laser beams to measure distances non-contactly, eliminating the need for physical tape measures and their associated precision limitations from scale markings and operator skill variations.
Solution Approach 2:
The patent introduces a laser ranging sensor as an intermediary device between the user and the measurement process. This intermediary automatically performs the measurement function with high precision, removing the user from the direct measurement action and eliminating human error in reading and interpreting measurements.
2Adaptability or versatility
If a tape measure is used for measurement, then dimensional measurement is possible, but the tape measure may bend during use affecting accuracy
Solution Approach 1:
The patent replaces the flexible mechanical tape measure with a rigid optical laser sensor system. The laser sensor maintains a fixed, stable position and emits laser beams that travel in straight lines, eliminating the bending and deformation issues inherent in flexible tape measures.
Solution Approach 2:
The patent extracts the measurement function from the mechanical tape measure and implements it through a separate laser ranging sensor system. This separation allows the measurement function to be performed independently without being constrained by the physical limitations of a flexible tape measure.
3Adaptability or versatility
If a tape measure is used, then measurement of limited range is possible, but measuring long sizes requires multiple superimposed measurements increasing complexity
Solution Approach 1:
The patent replaces the manual, iterative tape measure process with an automated laser ranging system. The laser sensor can measure long distances in a single operation by emitting laser beams that travel the full distance, eliminating the need for multiple superimposed measurements and the associated complexity of aligning and summing multiple measurement segments.
4Adaptability or versatility
If a tape measure is used for high or deep position measurement, then measurement is possible, but auxiliary tools such as ladders or telescopic poles are required
Solution Approach 1:
The patent replaces the mechanical tape measure requiring physical extension tools with an optical laser sensor system. The laser sensor can emit and detect laser beams over long vertical and horizontal distances without requiring physical contact or extension tools like ladders or telescopic poles, making high and deep position measurements much easier and safer.
5Device complexity
If no level meter is provided, then the portable scale structure is simpler, but tilt errors occur during weighing and ranging in non-horizontal state
Solution Approach 1:
The patent introduces a level meter as an intermediary instrument to detect and indicate the horizontal state of the measuring device. This level meter provides real-time feedback about tilt conditions, allowing users to adjust the device to the correct orientation before taking measurements, thereby eliminating tilt errors without significantly complicating the overall system.
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
Enhances measurement accuracy by avoiding contact measurement errors, optimizing sensor placement, and providing real-time display, while ensuring stability and convenience through intelligent function switching and level detection.
Implementation Method 1
a weighing sensor and a wireless ranging sensor are arranged on the housing
Implementation Method 2
a weighing sensor and a wireless ranging sensor are arranged on the housing
Implementation Method 3
at least one group of level meters is mounted at any position outside the housing
Data Source
AI summary
A portable scale with a ranging function is provided. According to the portable scale, components such as a weighing sensor, a wireless ranging sensor, a sensing button and a level meter are integrated in a housing of the portable scale, which can intelligently identify a weighing mode and a height ranging mode for weighing and ranging of a target. The wireless ranging sensor is used in the portable scale, which effectively avoids an error and inconvenience brought by a traditional contact measurement method and enables ranging to be more accurate. A weighing hook is located below the weighing sensor, which is convenient to weigh a hanging object. The wireless ranging sensor passes through the housing via a first opening to ensure that the wireless ranging sensor faces the target and improve measurement accuracy.