Spectrometer Engine Auto-Adjustment for Signal Dynamic Range
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Solution Overview
Problem
Manual adjustment of setting parameters in spectrometers is inconvenient and inaccurate, affecting the intensity of light signals measured, which can lead to suboptimal performance.
Innovation Solution
A spectrometer engine with a connector, light sensor, variable gain amplifier, variable reference voltage generation circuit, and control circuit that automatically adjusts parameters to optimize signal intensity by identifying connected spectral sampling modules and setting default values for the amplifier, reference voltage, and light source control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual adjustment of setting parameters is used, then the operator can control the measurement process, but the adjustment is inconvenient and inaccurate
Solution Approach 1:
The spectrometer engine automatically identifies the spectral sampling module type and adjusts setting parameters without operator intervention. The control circuit reads the identity signal from the spectral sampling module and autonomously configures optimal parameters, eliminating manual adjustment while maintaining measurement accuracy.
Solution Approach 2:
The system uses the identity signal from the spectral sampling module as feedback to automatically determine and adjust the appropriate setting parameters. This closed-loop approach ensures accurate parameter configuration based on the specific module connected, resolving the contradiction between automation and precision.
2Adaptability or versatility
If different spectral sampling modules are used, then the spectrometer can measure different objects, but the light signal intensity varies requiring parameter readjustment
Solution Approach 1:
The spectrometer engine is designed to work with multiple types of spectral sampling modules (reflective, transmissive, transflective). The control circuit universally handles different module types by reading their identity signals and automatically configuring appropriate parameters, maintaining consistent measurement performance across all module types.
Solution Approach 2:
The system automatically changes setting parameters based on the identified spectral sampling module type. The control circuit adjusts parameters such as light source intensity, integration time, and gain to optimize measurement performance for each specific module type, ensuring reliability while maintaining versatility.
3Productivity
If the light signal intensity is not optimized, then the measurement process is simpler, but the spectrometer performance is not fully exerted
Solution Approach 1:
The system performs preliminary identification of the spectral sampling module type and pre-configures optimal setting parameters before measurement begins. This advance preparation ensures maximum spectrometer performance without requiring complex real-time adjustments during the measurement process.
Solution Approach 2:
The spectrometer engine autonomously optimizes light signal intensity by automatically adjusting setting parameters based on the connected module type. This self-service mechanism eliminates the need for operator intervention while fully exerting spectrometer performance, resolving the contradiction between performance and complexity.
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
This solution provides a more convenient and accurate parameter adjustment mechanism, ensuring optimal performance and measurement results without manual intervention, by automatically setting parameters for different spectral sampling modules and recursively adjusting them to maintain signal intensity within a dynamic range.
Implementation Method 1
The light sensor is adapted for sensing the light to be measured coming from the object to be measured to generate a sensing signal
Data Source
AI summary
A spectrometer engine and an adjustment method thereof are provided. The spectrometer engine includes a connector, a light sensor, a variable gain amplifier, a variable reference voltage generation circuit, an analog-to-digital converter and a control circuit. The light sensor senses a light to be measured coming from an object to be measured to generate a sensing signal. The variable gain amplifier amplifies the sensing signal according to a first setting parameter to generate an amplified signal. The variable reference voltage generation circuit provides a reference voltage according to a second setting parameter. The analog-to-digital converter converts the amplified signal to a digital signal according to the reference voltage. The control circuit reads the digital signal and adjusts at least one of the first to third setting parameters according to the digital signal for the spectrometer engine to measure the object to be measured again to generate another digital signal.