Compact Input Measurement Module with Offset Connector
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Solution Overview
Problem
Measurement systems face challenges with field signals linked to high common-mode voltages, ground loops, and voltage spikes in industrial or research environments, which can damage computer systems, and existing solutions do not adequately address these issues for efficient signal conditioning and isolation.
Innovation Solution
A measurement module system with a carrier and input measurement modules that include a connector offset from the center to allow more components, guided insertion to prevent incorrect orientation, and spring-loaded clips for secure placement, along with a circuit board enclosed by casings for protection and easy assembly, which communicates with a computer system to implement respective interfaces and perform signal conditioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If field signals are directly connected to the computer system, then the system is simple and easy to operate, but the computer system is vulnerable to damage from high common-mode voltages, ground loops, and voltage spikes
Solution Approach 1:
The patent introduces an isolation barrier as an intermediary component between the field signal source and the computer system. This barrier physically separates the two systems while allowing signal transmission, thereby protecting the computer from high common-mode voltages, ground loops, and voltage spikes without complicating the overall system operation.
Solution Approach 2:
The measurement system is divided into distinct segmented components: the field signal source, the isolation barrier with differential inputs/outputs, and the computer system. This segmentation allows each component to be optimized independently while maintaining protection boundaries, resolving the contradiction between simplicity and reliability.
2Reliability
If isolation circuitry is added to protect against high common-mode voltages and ground loops, then the computer system is protected, but the system complexity increases
Solution Approach 1:
The isolation barrier is designed as a universal module that handles multiple protection functions (high common-mode voltage rejection, ground loop elimination, voltage spike protection) within a single integrated component. This multi-functionality reduces the need for multiple separate isolation circuits, thereby limiting the increase in system complexity while maintaining comprehensive protection.
3Adaptability or versatility
If multiple input measurement modules are used to support different interfaces, then the system versatility is improved, but the device complexity and difficulty of configuration increase
Solution Approach 1:
The system employs dynamic configuration capabilities where the carrier can be programmed or reconfigured to implement the appropriate interface for each inserted measurement module. This dynamic adaptability allows the system to support multiple interfaces without requiring permanent complex hardware configurations, reducing the perceived complexity while maintaining versatility.
Solution Approach 2:
The measurement modules and carrier are designed with self-identifying features (such as guide slots, asymmetric guides, and automated detection) that allow the system to automatically configure itself when modules are inserted. This self-service capability reduces the manual configuration burden and simplifies the user experience despite the presence of multiple versatile modules.
Data Source
AI summary
In some embodiments, an input measurement module may be configured to insert into a slot of a carrier using alignment guide slots and corresponding guide projections. Clips on the input measurement module or the carrier may engage corresponding depressions to secure the input measurement module to the carrier. The clips may be spring-loaded. The input measurement module may include a first outer casing and a second outer casing coupled together around a circuit board that interfaces with a backplane of the carrier through a backplane connector.