Evaluating the detection performance of knocking sounds! Introducing deep learning that achieved a high abnormality detection rate.
The knocking sound of the engine can be detected using acceleration sensors and combustion pressure sensors, but in the field of engine durability testing, detection using only non-contact microphones is expected. Here, the application of machine learning is considered, but it is difficult to collect a large amount of knocking sound as training data. Therefore, we prepared the sound of striking metal cans, created a framework to extract the characteristics of impact sounds, applied this framework to knocking sounds, and achieved a recognition accuracy of about 80% for engine knocking sounds. 【Features】 ■ Evaluation function: ReLU function ■ Pooling function: Max pooling function ■ Discrimination: Softmax function ■ Fully connected layer: Dropout *For more details, please refer to the PDF document or feel free to contact us.
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【Other Features】 <Model Configuration Used for Image Classification with AlexNet> ■Convolutional Layers: 5 layers ■Fully Connected Layers: 3 layers *For more details, please refer to the PDF document or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
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Our company develops vibration and noise measurement systems, sound source detection systems, thermal measurement systems, link systems with mode analysis and finite element methods, measurement instrument control systems via GPIB and RS232C, and model-related systems (HILS). We provide general-purpose systems such as the "CAT-System," which uses commercially available A/D boards to measure and analyze experimental data on vibration, noise, strain, temperature, etc., on a computer, as well as "physical model construction tools." Additionally, we also accept the construction of customized systems for various vibration analysis, noise analysis, and thermal analysis based on non-standard system configurations and specific output files for different companies. Furthermore, we engage in the sale of equipment related to these systems and provide technical consulting services.
![[Fan Motor Example] Vibration/Noise Automatic Measurement System](https://image.mono.ipros.com/public/product/image/803/2000558068/IPROS34323997689303624201.png?w=280&h=280)
