Configurable Analog Input Channels for Universal Sensor Interfaces
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Solution Overview
Problem
Conventional control systems require multiple dedicated sensing modules for different types of analog input signals, leading to underutilization of channels and inefficiency in complex applications.
Innovation Solution
Configurable analog input circuits with multiple channels, analog-to-digital converters, and processors that use switches and multiplexers to select and convert various types of analog input signals into digital outputs, allowing for flexible configuration and reduced unused channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If dedicated sensing modules with fixed input channels are used for different analog input types, then each module can be optimized for its specific function, but many channels remain unused leading to device underutilization and inefficiency
Solution Approach 1:
The patent implements a universal sensing module that can handle multiple analog input types (thermocouple, RTD, current, voltage) through configurable input channels. Each channel can be dynamically assigned to different input types via software configuration and switch matrix routing, eliminating the need for separate dedicated modules for each sensor type while maintaining optimized sensing capabilities for all input types within a single integrated module.
2Adaptability or versatility
If multiple dedicated sensing modules are deployed to cover all required input types, then complete coverage of input types is achieved, but the system complexity and number of required modules increase
Solution Approach 1:
The patent merges multiple dedicated sensing modules into a single universal sensing module by integrating multiple input channels within one module, each channel capable of being configured for different analog input types through a shared switch matrix and common analog-to-digital converter. This consolidation reduces the total number of modules required while maintaining the ability to handle all necessary input types simultaneously across different channels.
3Device complexity
If fixed-channel sensing modules are used, then hardware design is simplified, but flexibility in configuring channels for different input types is limited
Solution Approach 1:
The patent implements dynamic channel configuration within a fixed hardware architecture. Each input channel is equipped with switches that can be dynamically routed to different signal paths based on the selected input type. The configuration is controlled by a processor that adjusts the switch states and routing based on software settings, allowing flexible adaptation to different input types without requiring physical reconfiguration or complex dedicated hardware for each channel.
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
Facilitates the receipt and processing of different types of analog inputs in a universal input circuit, reducing waste and enhancing flexibility by allowing each channel to be configured for multiple input types, such as thermocouple, RTD, current, or voltage inputs.
Implementation Method 1
The at least one analog-to-digital converter may be configured to convert, for each of the plurality of input channels, the selected type of input signal into a digital output
Data Source
AI summary
Configurable analog input circuits are provided. An analog input circuit may include a plurality of configurable input channels, at least one analog-to-digital converter, and at least one processor. Each input channel may include a plurality of switches utilized to select a type of input signal received via the input channel and a set of input terminals selectively utilized to correspond with the selected type of input signal. The at least one analog-to-digital converter may be configured to convert, for each of the plurality of input channels, the selected type of input signal into a digital output. The at least one processor may be configured to control operation of the plurality of switches associated with each of the plurality of configurable input channels.