Automatic Analog Input Circuit for Multi-Sensor Signal Conversion
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Solution Overview
Problem
Existing systems require separate hardware circuits for different types of sensor outputs, making them time-consuming, inefficient, and costly to convert raw sensor electrical signals into compatible signals for various applications.
Innovation Solution
A system with an analog input circuit and a processor that automatically selects and converts sensor outputs based on received sensor characteristics, using a microprocessor to determine the appropriate analog input and voltage level for compatibility with the application, incorporating MOSFETs and a sensor voltage conditioning module to ensure proper signal translation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate hardware circuits are used for different sensor output types, then each sensor type can be converted accurately, but the system complexity and cost increase
Solution Approach 1:
The patent implements a single analog input circuit that can handle multiple sensor output types (4-20mA, 0-5V, 0-10V, etc.) through automatic detection and selection. The system uses a microprocessor to identify the sensor type and automatically configure the appropriate conversion parameters, eliminating the need for separate dedicated circuits for each sensor type while maintaining accurate conversion for all supported formats
Solution Approach 2:
The system performs automatic sensor type detection and self-configuration without requiring manual setup. The microprocessor automatically identifies the connected sensor type by reading characteristics from the sensor or querying its identification register, then automatically selects the appropriate conversion mode and parameters, making the system self-adapting and reducing user intervention
2Reliability
If separate hardware circuits are used for different sensor outputs, then each conversion can be optimized, but the installation time and efficiency decrease
Solution Approach 1:
The system pre-programs multiple conversion modes and parameters within the single analog input circuit, preparing all necessary conversion configurations in advance. When a sensor is connected, the microprocessor quickly identifies the sensor type and activates the pre-configured conversion mode, eliminating the need for manual configuration during installation and enabling rapid deployment
3Reliability
If separate hardware circuits are used for different sensor types, then each circuit can be specialized, but the overall system cost increases
Solution Approach 1:
The patent merges multiple dedicated conversion circuits into a single analog input circuit with multi-functional capability. By combining the functions of several specialized circuits into one unified circuit with automatic sensor type detection and adaptive conversion, the system reduces the total number of components, simplifies the bill of materials, and lowers overall system cost while maintaining the ability to handle various sensor types
Data Source
AI summary
A system configured to convert an output of a sensor for an application includes an analog input circuit and a processor. The analog input circuit is configured to receive the sensor output. The processor is configured to determine an analog input of the analog input circuit to read the sensor output, and based on one or more received sensor characteristics, and convert the read sensor output to a signal compatible with the application.