Portable Device Chemical Sensor Plugin Interface for Gas Detection
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Solution Overview
Problem
Portable electronic devices with integrated chemical sensors face limitations in selectivity and sensitivity, requiring multiple sensors and complex operation routines to distinguish between various gases, and existing OS updates are not sufficient for improving sensor performance outside regular cycles.
Innovation Solution
A method for a portable electronic device with a chemical sensor system that uses a combination of OS-level and user-level instructions, where user-level instructions can be remotely updated and communicated through a sensor plugin interface, allowing for improved control and performance of the chemical sensor, including a sensor array with CMOS circuitry and a duct for air sampling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a plurality of sensors are combined to distinguish between certain gases, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent implements a universal instruction set architecture that can execute multiple different instruction sets for controlling various sensor types and gas detection algorithms. This allows a single processor to handle diverse sensing tasks without requiring separate dedicated hardware for each sensor type, thereby improving measurement precision across multiple gases while avoiding the complexity increase that would result from multiple specialized processing units.
Solution Approach 2:
The system dynamically changes operational parameters by loading different instruction sets that modify sensor control parameters, measurement sequences, and data processing algorithms. This enables the same sensor hardware to be optimized for detecting different gases or gas combinations by changing the instructional parameters rather than adding physical sensors, thus improving precision without proportionally increasing device complexity.
2Measurement precision
If sensor operation routines are customized for specific gases, then measurement precision is improved, but ease of operation deteriorates
Solution Approach 1:
The patent creates a universal operating system layer that provides standardized interfaces for controlling sensors and processing data, while underlying customized instruction sets handle gas-specific measurement protocols. This architecture allows precise, customized sensor operation for different gases to be implemented without requiring users to directly manage the complexity of customized routines, as the OS abstracts these details away while maintaining precision through selective instruction execution.
3Adaptability or versatility
If OS updates are performed regularly to improve sensor performance, then adaptability is improved, but loss of time occurs during update cycles
Solution Approach 1:
The patent implements a mechanism where updated instruction sets and sensor control algorithms are downloaded and stored in memory in advance, ready for execution. This preliminary action allows the system to prepare performance improvements without requiring immediate installation, enabling seamless transitions that minimize device downtime while maintaining adaptability through pre-loaded updates.
Solution Approach 2:
The system employs periodic update cycles where sensor performance optimizations are systematically deployed at predetermined intervals. This periodic approach balances adaptability improvements with operational continuity, allowing the device to maintain updated sensor algorithms while minimizing disruption to normal operation through structured, time-managed update sequences.
Data Source
Figure 1A~1B
Figure 2~3
Figure 4A~4B
AI summary
A portable electronic device, such as a mobile phone, and related methods are described using an integrated chemical sensor (12,21), such as metal oxide gas sensor, linked to a chemical sensor processing unit (211,23,25) and being sensitive to the concentration of a component in a sample of air and further including an operating system providing instructions for the control of the portable device, wherein the chemical processing unit uses under operating conditions a first set of instructions and a second set of instructions stored within the portable device, wherein the first set of instructions is part of the operating system level (30,34,36) of instructions and the second set of instructions is part of a user level (38) of instructions with the second set of instructions being linked to the operating system via a plugin interface (372) and wherein the second set of instructions is communicated to the portable device from a remote computing system (29) based on access to measurements and/or operating conditions of the chemical sensor(12,21). The method is particularly suitable for updating sensor settings at the sensor application level through the Internet.