Biomaterial Test Device Temperature Control via Voltage Compensation
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Solution Overview
Problem
Biomaterial test equipment faces challenges in maintaining a constant temperature during analysis due to voltage variations, which can lead to inaccurate results as the heating provided by the heater is affected by changes in voltage supply.
Innovation Solution
A test device control method that includes a temperature sensor, a voltage sensor, and a control part to determine a heater driving value that maintains a constant current through the heater, even with voltage alterations, and adjusts the heating to compensate for temperature differences, preventing overheating by blocking voltage supply when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heater is used to maintain temperature in the test device, then the internal temperature can be maintained at a preset level, but voltage variations cause current fluctuations that reduce temperature control accuracy
Solution Approach 1:
The control part continuously monitors the internal temperature via a temperature sensor and adjusts the heater driving value dynamically. When voltage variation is detected, the system calculates a compensation value and adjusts the heater current accordingly, creating a closed-loop feedback system that maintains accurate temperature control despite voltage fluctuations.
Solution Approach 2:
The system changes the heater driving parameter (current) based on detected voltage variations. When voltage drops, the control part increases the heater driving value to compensate, and when voltage rises, it decreases the driving value. This dynamic parameter adjustment ensures stable temperature maintenance despite power supply instability.
2Temperature
If the heater driving value is increased to compensate for voltage drop, then temperature can be maintained, but the heater may overheat and cause damage
Solution Approach 1:
The temperature sensor continuously monitors the internal temperature and feeds this information back to the control part. The control part compares the actual temperature with the preset temperature and adjusts the heater driving value accordingly, preventing excessive heating while maintaining the required temperature level.
Solution Approach 2:
The heater driving value is made dynamic rather than fixed. The control part continuously adjusts the driving value based on real-time temperature measurements and voltage conditions, allowing the system to adapt to changing conditions and prevent both underheating and overheating scenarios.
3Object-affected harmful factors
If voltage supply is blocked to prevent overheating, then heater safety is improved, but temperature control is compromised
Solution Approach 1:
The system uses dynamic control of the heater driving value instead of simple on/off switching. The control part continuously adjusts the driving value within a safe range, allowing fine-grained control that prevents overheating while maintaining temperature stability, avoiding the need to completely block voltage supply.
Solution Approach 2:
The control part calculates a compensation value based on detected voltage variations before temperature deviations occur. By proactively adjusting the heater driving value in response to voltage changes, the system prevents temperature excursions and eliminates the need for reactive voltage blocking.
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 ensures a consistent internal temperature is maintained within the test device, even with voltage fluctuations, thereby enhancing the reliability and accuracy of biomaterial analysis results.
Implementation Method 1
An amount of heat provided by the heater is determined by a current flowing through the heater and the current flowing through the heater is determined by a voltage applied to the heater
Implementation Method 2
a temperature sensor to sense an internal temperature of the test device
Data Source
AI summary
A test device having an internal temperature constantly maintained even when a voltage supplied to the test device is altered, and a control method thereof are provided. The test device includes a heater, a temperature sensor to sense an internal temperature of the test device, and a control part to control a current applied to the heater, in order to prevent a temperature of the heater from being varied due to voltage variation when the voltage supplied to the test device is altered.