Spectrometry Device Signal Conversion Merging
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Solution Overview
Problem
Conventional spectrometry devices require multiple conversion units for processing signals from multiple photodetectors, leading to increased product costs and complex circuit systems, especially when analyzing optical spectra from two emission units with multiple reception units.
Innovation Solution
A spectrometry device that uses only two conversion units to process signals from multiple reception units, allowing for parallel analysis of optical spectra by alternating signal processing between the units and optimizing circuit usage, thereby reducing component count and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If each photodetector is connected with a conversion unit that converts a reception signal from analog to digital, then signal processing capability is improved, but product costs increase and circuit system becomes complex
Solution Approach 1:
The patent merges the conversion functions by sharing conversion units between multiple photodetectors. Specifically, the first conversion unit processes signals from both the first and second photodetectors, and the second conversion unit processes signals from both the third and fourth photodetectors. This reduces the total number of conversion units from four to two, thereby reducing circuit complexity and product costs while maintaining signal processing capability.
Solution Approach 2:
The conversion units are designed with multi-functionality to handle signals from multiple photodetectors. The first conversion unit serves dual purposes by converting signals from both the first photodetector (measurement light) and second photodetector (reference light), while the second conversion unit does the same for the third and fourth photodetectors. This universal approach reduces the overall component count without sacrificing processing capability.
2Measurement precision
If two emission units are each disposed with a plurality of reception units, then measurement precision is improved, but product costs increase
Solution Approach 1:
The patent combines the conversion functions for multiple reception units by sharing conversion units. Instead of having separate conversion units for each photodetector, the first conversion unit handles signals from both the first and second photodetectors, and the second conversion unit handles signals from the third and fourth photodetectors. This reduces the number of conversion units from four to two, reducing product costs while preserving the ability to perform precise optical spectrum analysis from multiple emission units.
3Productivity
If multiple conversion units are used for parallel signal processing, then productivity is improved, but device complexity increases
Solution Approach 1:
The patent implements periodic action through time-division multiplexing of the conversion units. The control unit alternates between converting signals from different photodetectors in sequential time periods. During the first time period, the first conversion unit processes signals from the first photodetector, and during the second time period, it processes signals from the second photodetector. This periodic switching enables parallel analysis capability while using fewer conversion units, thus reducing device complexity.
Solution Approach 2:
The system dynamically switches between different signal processing paths based on time periods. The control unit dynamically assigns which photodetector signal goes to which conversion unit based on the current time period. This dynamic allocation allows the system to maintain high productivity through parallel processing capability while reducing the physical number of conversion units required, thereby lowering device 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 approach improves analysis precision through signal averaging and reduces product costs by minimizing the number of conversion-unit-related circuit components, enabling efficient parallel processing of optical spectra from multiple emission units.
Implementation Method 1
a first emission unit 11 and a second emission unit 12 that emit optical spectra of different wavelength bands, a first reception unit 31 and a second reception unit 32 that receive the optical spectra irradiated from the first emission unit 11 and the second emission unit 12 respectively, and generate reception signals S1, S2 including information on the optical spectra
Implementation Method 2
a first conversion unit 51 and a second conversion unit 52 that convert the reception signals S1, S2 into digital signals
Implementation Method 3
the control unit 100 analyzes the optical spectrum based on the first reception signal S1 converted during the first time period T1
Data Source
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AI summary
A spectrometry device (1) includes a first converter that processes a reception signal based on an irradiation light from a first emitter (11), a second converter that processes a reception signal based on an irradiation light from a second emitter (12), and a controller (10) that controls the first emitter and the second emitter. The reception signal based on the irradiation light irradiated from the first emitter (11) includes a first reception signal and a second reception signal that each include information that relates to an optical spectrum. When the controller (10) stops the operation of the second emitter (12), the first converter converts the first reception signal into a first digital signal and the second converter converts the second reception signal into a second digital signal.