Gas Measuring Apparatus Modular Design
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Solution Overview
Problem
Current gas measurement apparatuses require replacement of the entire unit upon failure of the external module, leading to high costs, inconvenience, and waste, as the second module is integral with the casing and cannot be separated without invalidating the measurement.
Innovation Solution
A modular design where the first module contains only mechanical sensors and no electronic processing unit, with a second module positioned externally containing a microprocessor and memory for signal processing and data storage, allowing for independent replacement and maintenance of components without affecting the metrological functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the second external module is made integral with the casing using mechanical locks and seals, then the metrological functions and measurement validity are safeguarded, but the ability to replace individual components is lost and entire apparatus replacement becomes mandatory
Solution Approach 1:
The apparatus is divided into separate replaceable modules: a first module containing sensors and a second module containing the microprocessor and memory. These modules can be independently replaced without affecting the integrity of the other, allowing component-level maintenance while preserving metrological validity through controlled interfaces.
Solution Approach 2:
A sealed interface or coupling mechanism acts as an intermediary between modules, allowing them to be separated and reconnected while maintaining the integrity of the measurement system. This mediator enables module replacement without compromising the sealed environment required for valid measurements.
2Reliability
If the entire apparatus must be replaced upon module failure, then measurement validity is maintained, but costs increase and functional components are wasted
Solution Approach 1:
By segmenting the apparatus into independently replaceable modules, only the failed module needs replacement rather than the entire apparatus. This preserves functional components and reduces material waste while maintaining measurement validity through the modular architecture.
Solution Approach 2:
The modular design enables selective discarding of only the failed module while recovering and reusing all functional components from the apparatus. This extends the overall lifespan of the measurement system and reduces the need for complete apparatus replacement.
3Reliability
If the second external module is integral with the casing, then measurement integrity is protected, but replacement requires blocking gas supply and causes user inconvenience
Solution Approach 1:
The modular design allows the second module to be replaced independently of the casing, eliminating the need to block gas supply for replacement purposes. Users can maintain continuous gas flow while technicians replace modules during scheduled maintenance windows.
Solution Approach 2:
Modules can be pre-prepared for replacement and the gas supply can be temporarily isolated only during the actual replacement operation rather than during the entire replacement process. This preliminary preparation reduces disruption to user operations.
4Reliability
If mechanical locks and seals are used to prevent module removal, then metrological functions are safeguarded, but device complexity increases
Solution Approach 1:
A standardized sealed interface acts as an intermediary mechanism that provides both the locking function and the sealing function through a single integrated component. This reduces complexity compared to separate mechanical locks and seals while maintaining metrological protection.
Solution Approach 2:
The module interface is designed with multi-functionality, combining attachment, sealing, and identification functions into a single standardized connection mechanism. This universal interface simplifies the overall system while maintaining the required protection for metrological functions.
Data Source
Figure 1~2
AI summary
Apparatus (1) for measuring gas (30), in particular of the type suitable for measuring the flow of gas (30) present and circulating within a pipe, comprising: - a containment casing (7) provided with a first opening (9) for the gas inlet inside it and a second opening (11) for the gas outlet, - a first module (4) which is housed inside said containment casing (7) and which comprises at least one sensor (2) for detecting a corresponding quantity of the gas (30) flow which passes through and/or circulates in said apparatus (1), - a second module (20) which is associated externally to said containment casing (7), and characterized in that it: - comprises a single and only one processing and/or control unit which is defined by an external electronic processing and/or control unit (25) which is housed in said second module (20) and which is electronically connected to said at least one sensor (2) to thus receive the detections made by said at least one sensor (2), - includes at least one memory unit (6): - which is external and independent of said second module (20) so that said second module (20) is removable and/or dissociable from said casing (7) independently of said at least one memory unit (6), - in which parameters useful for metrological purposes are stored in an unchangeable way, - which is electronically connected with the external electronic unit (25) of said second module (20) external to the containment casing (7), for receiving and storing information processed by said unit and relating to the operation of said apparatus (1). - the external electronic unit (25) of the second module (20) is configured so that, during normal operation of the apparatus, it sends the information relating to the operational operation of the apparatus (1) to the memory unit (6), thus allowing the storage of said information in said memory unit (6).