State detection apparatus
AssigneeHitachi, Ltd.
InventorsTakashi OSHIMA, Keisuke Yamamoto, Goichi Ono
Life of this patent
Estimating the term…
Abstract
The time-series signal of the sensor is transformed to the spectral intensity by fast Fourier transform (FFT) or the like, and the one-dimensional data of the spectral intensity is generated. A pseudo image is generated, for example, by repeatedly arranging the one-dimensional data in the vertical direction, or by arranging the one-dimensional data for a plurality of sensors in the vertical direction. The state of the facility is identified by analyzing the pseudo image with an image analysis unit such as a convolutional neural network.
Claims7
1-20. (canceled)
A state detection apparatus comprising:
- a camera for acquiring a camera image;
- a sensor;
- and
- a computation unit in which data detected by the sensor is output, wherein
- the computation unit includes a processing apparatus configured to execute data processing comprising
- transforming the data detected by the sensor into data relating to spectral intensity, by preforming a discrete Fourier transform or a fast Fourier transform on data of the digitized time-series signals of the data detected by the sensor, then converting values corresponding to the spectral intensity into a non-linear expression, and then performing quantization that reduces an expression word length of spectral intensity;
- generating a pseudo image based on the data relating to the spectral intensity;
- analyzing the pseudo image;
- and
- outputting a classification result of the state of a facility, and
- wherein the state detection apparatus further comprises selection means that selects one of the camera image and the pseudo image.
A state detection apparatus comprising:
- a camera for acquiring a camera image;
- a sensor;
- and
- a computation unit in which data detected by the sensor is output, wherein
- the computation unit includes a processing apparatus configured to execute data processing comprising
- transforming the data detected by the sensor into data relating to spectral intensity by performing an orthogonal transformation on data of a digitized time-series signals of the data detected by the sensor, then performing converting the values corresponding to spectral intensity into a non-linear expression, and then performing quantization that reduces and expression word length of spectral intensity;
- performing the orthogonal transformation using at least one of a discrete cosine transform, a discrete sine transform, a discrete Fourier transform that is slower than the fast Fourier transform, and a Walsh-Hadamard transform;
- generating a pseudo image based on the data relating to the spectral intensity;
- analyzing the pseudo image;
- and
- outputting a classification result of the state of a facility, and
- wherein the state detection apparatus further comprises selection means that selects one of the camera image and the pseudo image.
Dependencies are inferred from the claim text.