Multi-Sensor Temperature Control for Cookware Heating Area Uniformity
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Solution Overview
Problem
Existing baking machines with temperature sensors at the center of the baking tray fail to detect temperature reductions accurately when food is placed at the edge, leading to unreliable cooking temperatures due to delayed heating device activation.
Innovation Solution
A temperature control method and apparatus with multiple temperature sensors at different positions on the heating area, allowing for real-time temperature monitoring and control by starting or stopping heating devices based on preset conditions, ensuring consistent cooking temperatures across the heating area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single temperature sensor is disposed at the center position of the baking tray, then the device complexity is reduced, but the temperature measurement precision and reliability deteriorate when food is placed at the edge region
Solution Approach 1:
The baking tray heating area is divided into multiple monitoring zones by arranging multiple temperature sensors at different positions (center and edge regions). Each sensor independently monitors its local zone, enabling comprehensive temperature coverage without significantly increasing system complexity.
Solution Approach 2:
Different regions of the baking tray are equipped with temperature sensors according to their specific thermal characteristics. The center region and edge regions each have dedicated sensors that locally monitor temperature changes, providing region-specific temperature control capability.
2Device complexity
If a single temperature sensor at the center is used, then the device structure is simplified, but the response time to detect temperature reduction deteriorates when food is placed at the edge
Solution Approach 1:
The monitoring task is segmented across multiple sensors positioned at different locations. When food is placed at the edge, the edge sensor immediately detects temperature changes without waiting for heat to propagate to the center, eliminating detection delays.
Solution Approach 2:
Temperature sensors are pre-positioned at all critical locations including edge regions before food placement. This preliminary arrangement ensures that any temperature change anywhere on the baking tray can be detected immediately, rather than waiting for thermal propagation to a single center point.
3Device complexity
If temperature control is based on center region only, then the control system is simpler, but the reliability of cooking temperature deteriorates for edge-placed food
Solution Approach 1:
The control system receives temperature data from multiple independent sensors and processes them separately. The control unit can determine the minimum temperature among all sensor readings, ensuring that heating control is based on the coldest region regardless of where food is placed, thereby guaranteeing reliable cooking temperature.
Solution Approach 2:
Multiple temperature sensors provide continuous feedback from different regions of the baking tray. The control unit processes this distributed feedback information to make heating decisions, ensuring that temperature control reliability is maintained across all regions rather than relying on a single center-point feedback signal.
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
Improves the flexibility and intelligence of temperature control, ensuring reliable cooking temperatures and safety by synthetically judging temperature changes across the heating area, regardless of food placement.
Implementation Method 1
a plurality of temperature sensors arranged at different positions of a first heating area... temperature values detected by the plurality of temperature sensors are collected
Implementation Method 2
the first heating device is started if the minimum temperature value and the maximum temperature value of the first heating area satisfy a preset temperature increase condition
Data Source
AI summary
A temperature control method for a cookware includes collecting temperature values detected by a plurality of temperature sensors arranged at different positions of a heating area of the cookware, determining a minimum temperature value and a maximum temperature value of the heating area from among the collected temperature values, starting a heating device in response to the minimum temperature value and the maximum temperature value of the heating area satisfying a preset temperature increase condition, and stopping the heating device in response to the minimum temperature value and the maximum temperature value of the heating area satisfying a preset temperature reduction condition.