キャテック List of Products and Services

Introducing the "Acoustic camera Hextile/Multitile" that we handle. "Hextile" is a lightweight aluminum hexagonal microphone array module with MEMS microphones arranged in a spiral pattern. By adding "Hextile," it can be expanded into a high-performance real-time sound source exploration system called "Multitile." It displays high-resolution color maps analyzed using a beamforming method processed at high speed in real-time. 【Features】 ■ High dynamic range achieved with MEMS microphones ■ Equipped with two types of beamforming methods ■ Virtual microphone/Acoustic eraser functions ■ Frame rate: 15FPS/45FPS ■ Measurement distance: 0.5m to 200m *For more details, please refer to the PDF document or feel free to contact us.

• Noise Inspection
• Acoustic Analysis
• Other environmental analysis equipment

The "CAT-System Pro" is an integrated measurement system that operates on a computer with a front-end (A/D board) for data recording. While recording noise, vibration, etc., it can perform real-time analyses such as FFT (low and high frequency), 1/N octave analysis, and order analysis, while simultaneously saving time data (throughput). Additionally, it can also record distortion, temperature, images, and more. With the throughput disk function, simultaneous data saving is possible, allowing for later analysis where the number of sampling points and windows can be changed to analyze the recorded data. 【Features】 ■ Multi-job system using multi-threading - Simultaneous measurement of sound/vibration/distortion/temperature/rotation signals is possible ■ Measurement video recording - Playback of camera footage linked to waveforms is possible ■ Comment and event information input function *For more details, please refer to the PDF document or feel free to contact us.

• Vibration Inspection
• Noise Inspection
• Acoustic Analysis

The "CAT-RVM" is a remote monitoring data logger system that uses NI's CompactRIO and internet connections to measure vibrations, temperatures, rotation speeds, and other parameters of equipment located remotely, allowing for the monitoring of the equipment's operational status. This system employs a real-time operating system, so if the equipment's power is temporarily cut for any reason, it can automatically resume measurements once power is restored. 【Features】 - Measures and performs abnormality detection of vibrations, temperatures, rotation speeds, etc., of remote equipment while conducting specified calculations. - Automatically sends error outputs such as alarms and warning emails to registered addresses when set thresholds are exceeded. *For more details, please refer to the PDF documentation or feel free to contact us.

• Vibration Inspection
• Noise Inspection
• Vibration Monitoring

The "Acoustic camera CAM64/CAM1K" is a compact and lightweight microphone array with high-sensitivity digital MEMS microphones arranged in a grid pattern, featuring 64 channels or 1024 channels. It enables high-resolution near-field acoustic holography (NAH) analysis with a 2cm microphone spacing. Acoustic holography calculates acoustic intensity from sound pressure, displaying color maps (acoustic intensity, sound pressure, particle velocity) with high resolution from low to high frequencies, unaffected by wavelength. 【Features】 ■ Two types of microphone arrays - Compact and lightweight type: 64 channels, 17×17 cm, weight 0.3 kg, frequency range: 20Hz - 8.5kHz - General-purpose type: 1024 channels, 64×78.5 cm, weight 4.9 kg, frequency range: 20Hz - 8.5kHz ■ Microphone spacing: 2cm ■ Analysis functions: Steady-state NAH, transient NAH (post-analysis), sound pressure color map, BF (real-time) *For more details, please refer to the PDF document or feel free to contact us.

• Acoustic Analysis
• Noise Inspection

"CAT-SQ" is software that reads measurement data files recorded in the "CAT-System" and calculates sound quality evaluation metrics. Generally, the level of noise is used as a standard for evaluating mechanical products, but recently, instead of blindly reducing noise, it has become necessary in manufacturing to create pleasant sounds, sounds that evoke a sense of tranquility, and sounds that convey a sense of character. These physical parameters, which are sound quality evaluation metrics, can be obtained as psychoacoustic evaluations (matrix) similar to noise levels. 【Features】 <Main sound quality evaluation metrics that can be calculated> ■ Loudness N [sone] ■ Sharpness S [acum] ■ Fluctuation strength F [vacil] ■ Roughness R [asper] ■ Tonality AdT [%] *For more details, please refer to the PDF document or feel free to contact us.

• Noise Inspection
• Acoustic Analysis

Our company handles the "Vibration/Noise Automatic Measurement System." This system uses NI's A/D board to automatically measure vibrations, noise, and rotation pulses from fans (motors), etc. Signal generators (PWM) and DC power supplies (voltage) are controlled from a computer. For each measurement mode such as background noise, steady state, rise, and fall, test patterns are created to measure vibrations and noise, and perform FFT, octave analysis, and tracking analysis (constant ratio/constant width), etc. *For more details, please refer to the PDF document or feel free to contact us.

• Vibration Testing
• Noise Inspection
• Other measurement, recording and measuring instruments

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.

• Other environmental analysis equipment
• Other measurement, recording and measuring instruments

"CAT-CMP" is a learning-based comparator software that makes judgments on vibration/noise data using statistical methods. It automates the inspection of abnormal sounds and vibrations in products, which previously relied on the operator's senses. Since offline post-analysis is possible, you can analyze by changing conditions such as the frequency range and thresholds, allowing you to determine the thresholds. 【Features】 ■ Capable of handling a variety of products by registering judgment conditions ■ Complex judgments are possible by changing measurement conditions ■ If there is a collection of OK data/NG data, reference data can be calculated from that data ■ If the phenomenon is reproducible, having reference data for each NG pattern allows not only for OK/NG judgments but also for the identification of the content of NGs *For more details, please refer to the PDF document or feel free to contact us.

• Noise Inspection
• Other measurement, recording and measuring instruments
• Other environmental analysis equipment

This system (CAT-System) is a vibration and noise measurement system composed of a signal input unit equipped with A/D functionality and software that operates on a computer. By changing the signal input unit, it can also be used for purposes other than mechanical vibration and noise measurement. This system excels in integration with other modal analysis tools, MATLAB, Excel, etc., allowing for a seamless flow from measurement to analysis with simple operations. Additionally, it is designed for easy customization, enabling users to build a unique custom system based on this system.

• Vibration Testing