Temperature Monitoring Circuit With Ambient-Compensated Triggering
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Solution Overview
Problem
Existing electronic circuit arrangements for temperature monitoring in areas at risk of explosions, such as oil platforms, are technically complex and fail to accurately account for ambient temperatures when monitoring battery cell temperatures.
Innovation Solution
An electronic circuit arrangement that incorporates both a primary temperature sensor for local temperature measurement and a secondary temperature sensor to account for ambient temperatures, generating a trigger signal only when the primary sensor's temperature exceeds a dynamically defined reference value based on the secondary sensor's reading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a primary temperature sensor is used for local temperature monitoring, then temperature detection capability is improved, but false trigger signals occur due to ambient temperature variations
Solution Approach 1:
A secondary temperature sensor is introduced as an intermediary element to measure ambient temperature. This mediator allows the system to distinguish between temperature changes caused by the monitored object and those caused by environmental conditions, thereby preventing false triggers while maintaining accurate local temperature detection
Solution Approach 2:
The system implements feedback by continuously monitoring ambient temperature through the secondary sensor and dynamically adjusting the reference value for the primary sensor. This feedback mechanism enables the system to adapt to changing environmental conditions and maintain reliable temperature monitoring without false alarms
2Device complexity
If temperature reference value is statically defined, then system complexity is reduced, but monitoring accuracy decreases due to ambient temperature variations
Solution Approach 1:
The temperature reference value transitions from a static parameter to a dynamic one that automatically adjusts based on ambient temperature measurements. This dynamic adaptation is achieved through automated calculations that incorporate secondary sensor data, maintaining monitoring accuracy without requiring manual recalibration or complex configuration
3Device complexity
If only local temperature monitoring is performed, then device complexity is minimized, but reliability in explosive areas is insufficient
Solution Approach 1:
The monitoring system is segmented into two functional components: a primary temperature sensor for local temperature monitoring and a secondary temperature sensor for ambient temperature monitoring. This segmentation allows each sensor to perform its specialized function while together they provide comprehensive monitoring capability suitable for explosive areas
Solution Approach 2:
The secondary temperature sensor acts as an intermediary that provides environmental context to the monitoring system. By measuring ambient temperature and using it to dynamically adjust reference values, this intermediary element enables the system to reliably distinguish between normal environmental temperature changes and actual overheating conditions in explosive areas
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 enables precise temperature monitoring that considers ambient conditions, preventing false trigger signals and ensuring reliable detection of potentially hazardous temperature increases in battery cells.
Implementation Method 1
a primary temperature sensor for measuring a temperature in the immediate surroundings of the primary temperature sensor
Implementation Method 2
a secondary temperature sensor for measuring an ambient temperature of the electronic circuit arrangement
Data Source
AI summary
An electronic circuit arrangement for monitoring temperatures includes an electronic temperature-determining circuit with a temperature sensor for measuring an ambient temperature in the surroundings of the temperature sensor, configured to generate a comparator input signal depending on the temperature measured by the temperature sensor, an electronic reference circuit including a secondary temperature sensor for measuring an ambient temperature of the electronic circuit arrangement which is configured to generate a secondary comparator input signal that is dependent on the temperature measured by the secondary temperature sensor, an electronic comparator circuit which compares the primary and the secondary comparator input signal and generates a comparator output signal dependent on the two input signals. The temperature-determining circuit, the reference circuit and the comparator circuit are configured such that the comparator circuit generates a trigger signal as the comparator output signal if the temperature measured by the temperature sensor exceeds a temperature reference value.