Xiang ZOU, Songfeng YIN, Yue CHENG, Yunlong LIU. Temperature Compensation Study of Laser Methane Sensor Based on ISSA-BP Neural Network[J]. Acta Photonica Sinica, 2023, 52(8): 0814003
- Acta Photonica Sinica
- Vol. 52, Issue 8, 0814003 (2023)
Fig. 1. Measurement results and errors of CH4 concentration under different temperature conditions
Fig. 2. ISSA-BPNN temperature compensation model structure
Fig. 3. The update method of the step length factor L as the number of iterations increases
Fig. 4. Test results of unimodal function and multimodal function
Fig. 5. Flow chart of ISSA-BP temperature compensation model
Fig. 6. Optical circuit schematic diagram of laser methane sensor
Fig. 7. High and low temperature experimental equipment of laser methane sensor
Fig. 8. BP，PSO-BP，SSA-BP and ISSA-BP temperature compensation model prediction output
Fig. 9. Experimental data diagram of four models after compensation for methane gas with 0.5% concentration
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Table 1. Cyclic test results of different hidden layer nodes
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Table 2. Differentiation of training and test data samples
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Table 3. CH4 concentration output predicted value after temperature compensation
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Table 4. Performance evaluation index of four temperature compensation models
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