Pipette with Electronic Display for Syringe Dosing Step Tracking
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Solution Overview
Problem
Existing manually driven repeating pipettes require users to manually determine the number of dosing steps possible with a completely filled syringe, which is tedious and error-prone, and do not ensure accurate play compensation when the syringe is partially filled, affecting dosing accuracy.
Innovation Solution
A method and pipette with adjustable dosing increments and a display device that allows users to set and display the dosing volume, count dosing steps, and determine the number of steps possible without refilling, ensuring accurate dosing by detecting syringe volume and displaying information on the display device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manually driven repeating pipettes are used without electronic detection, then the device complexity is reduced, but the measurement precision and dosing accuracy deteriorate due to inability to track dosing steps and compensate for play
Solution Approach 1:
The patent implements feedback mechanisms through sensors that detect the position of the receiving body and the dosing steps performed. The control device uses this feedback information to display the number of dosing steps completed and remaining, enabling precise tracking of the dosing process without requiring complex electronic control systems.
Solution Approach 2:
The patent replaces manual mechanical counting of dosing steps with an automated detection system. Sensors detect the position of the receiving body and trigger the control device to record and display dosing step information, substituting manual mechanical operations with automated sensing and electronic processing.
2Ease of operation
If the syringe is partially filled and play compensation is not ensured, then the ease of operation is improved, but the measurement precision deteriorates due to inaccurate dosing
Solution Approach 1:
The sensor detects the actual position of the receiving body during each dosing step and provides feedback to the control device. This feedback enables the system to compensate for play and ensure accurate dosing even when the syringe is partially filled, while maintaining ease of operation through automated correction.
Solution Approach 2:
The control device adjusts the dosing parameters based on the detected position of the receiving body. When play is detected, the system dynamically changes the dosing parameters to compensate for the position discrepancy, ensuring accurate dosing volume is delivered despite partial filling conditions.
3Device complexity
If the number of dosing steps is not displayed, then the device complexity is reduced, but the loss of information increases as users must manually count and determine remaining steps
Solution Approach 1:
The sensor continuously monitors the position of the receiving body and provides feedback to the control device, which displays the number of dosing steps completed and remaining on the display device. This feedback loop eliminates information loss by automatically tracking and presenting dosing step information to the user.
Solution Approach 2:
The patent replaces manual counting of dosing steps with an automated electronic display system. The sensor detects dosing step positions and the control device presents this information electronically on the display, substituting manual mechanical counting with automated information presentation.
4Ease of operation
If constant reversing stroke is used without adjustment, then the ease of operation is improved, but the manufacturing precision deteriorates due to inability to compensate for syringe play
Solution Approach 1:
The patent makes the reversing stroke dynamic rather than constant. The control device adjusts the reversing stroke length based on the detected position of the receiving body and the current dosing step, enabling precise compensation for syringe play while maintaining ease of operation through automated adjustment.
Solution Approach 2:
The control device changes the parameters of the reversing stroke dynamically based on real-time detection of the receiving body position. This parameter adjustment enables precise dosing by compensating for syringe play, while the automated nature of the adjustment maintains ease of operation.
Data Source
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AI summary
The method involves releasably connecting a syringe (3) with a pipette (1). The information related to residual liquid dosing process is optionally set and displayed in an electronic display device (9). The maximum possible number of execution of liquid dosing process is displayed in display device, without refilling the syringe. The liquid dosing process is executed, after filling the syringe with liquid. The number of times of executed dosing processing is determined, so that maximum possible number of liquid dosing process is determined, without refilling the syringe. An independent claim is included for a pipette.