To enable evaluation of a shape of a fine particle and a fine particle type, a substrate is set as a substrate on which an isolated fine particle to be measured and an isolated standard fine particle in the vicinity of the isolated fine particle to be measured are disposed, and a scanning electron microscope body including a detector configured to detect secondary charged particles obtained by scanning a surface of the substrate with an electron beam probe, and a computer that processes a detection signal and generates an image of the isolated fine particle to be measured and the isolated standard fine particle are provided. The computer corrects a shape of the isolated fine particle to be measured by using a measurement result of the isolated standard fine particle disposed in the vicinity of the isolated fine particle to be measured. Further, by attaching a fine particle spreading tank equipped with a fine particle suspension dropping device inside the microscope body, automatic measurement including dropping of fine particle suspension onto a surface of a surface-modified substrate is possible.

A particle sizing method which allows for counting and sizing of particles within a colloidal suspension flowing through a single-particle optical sizing sensor SPOS apparatus using pulse height detection and utilizing non-parallel and non-uniform illumination within the sensing region of the flow cell. The method involves utilizing a deconvolution process which requires the SPOS apparatus to be characterized during a calibration phase. Once the SPOS apparatus has been characterized, the process of deconvolution after a data collection run, recursively eliminates the expected statistical contribution to the pulse height distribution PHD histogram in all the lower channels from the highest channel height detected, and repeating this for all remaining channels in the PHD, removing the contributions from largest to smallest sizes.

Provided are particle analyzers and related methods for verifying calibration status of the particle analyzer. The method includes the steps of providing an optical particle analyzer and modulating a power applied to a source of EMR. The method includes the steps of, in response to the modulating step, inducing a detector signal waveform and analyzing the detector signal waveform to determine a value of at least one diagnostic parameter associated with one or more of the source of EMR, an optical assembly, a chamber, a detector, and an optical collection system of the optical particle analyzer. The method includes the step of determining a calibration status of the optical particle analyzer based on the one or more determined values of the at least one diagnostic parameter.

An apparatus and method for generating a controlled, predictable, reproducible and variable-size distribution of particulate matter (PM), particle number (PN) and/or facsimile/simulation, derived from vaporizing and condensing a specialized liquid, utilizing a vapor delivery device; a filter capability so as to remove a significant amount of ambient PM/PN as a secondary calibration process for the identification of fine and ultra-fine particles (e.g., 0.3 micrometers and smaller) as well as a computer-controlled ability to perform a pre-determined series of calibration routines, housed in a container.

An automated method of particle analysis is performed using an electromagnetic radiation source for generating a beam of electromagnetic radiation, a focusing element for directing the beam to a particle capture zone, a detector configured to detect a signal response from the particle capture zone and a control system. An electromagnetic radiation beam is focused onto a particle-conveying medium to define the particle capture zone for capturing a candidate particle within the beam. A first data acquisition procedure is performed to test for particle capture. If particle capture is not detected, the first data acquisition procedure is repeated. If a particle capture is detected within the beam, a second data acquisition procedure is performed to capture particle data using at least one analysis modality, following which the optical beam intensity is reduced to a sub-capture level to release the particle from the particle capture zone. The steps are repeated for successive particles in the particle-conveying medium.

The present technology provides a technique for adjusting an output difference of a light source with high accuracy in fine particle measurement for optically measuring characteristics of fine particles.

In response to this, the present technology provides a fine particle measuring device and the like at least including: at least two light sources having different wavelength regions; a detection unit configured to detect light from a fluorescent reference particle in accordance with excitation light from the light sources; and an information processing unit configured to compare, on the basis of information detected by the detection unit, a feature quantity of an output pulse based on a reference light source among the plurality of light sources with a feature quantity of an output pulse based on at least another light source among the plurality of light sources, and adjust an output of the another light source.

An information processing device includes a statistical processing unit that performs statistical processing for a group of spectra obtained by applying light to a group of microparticles that exhibit one response property with respect to light, and on a basis of a result of the statistical processing, exclude a spectrum indicating an outlier from the group of spectra, and a reference spectrum calculation unit that calculates a reference spectrum using the group of spectra from which the spectrum indicating the outlier has been excluded.

A multi-core sensor system in taxi roof light is provided. The multi-core sensor system can intelligently determine whether the change is caused by the sub-sensor failure or sudden pollution, when the data detected by the sub-sensor suddenly changes dramatically, so as to increase the reliability of detection data of the sub-sensor. The multi-core sensor system can automatically determine whether the repair is needed when a device fault occurs, thereby ensuring the continuity of the sub-sensor detection data; which has significant value for continuous monitoring required for a haze treatment operation. In addition, human and material resources for device maintenance may be saved, thereby reducing waste.

A calibration method and system for a lubrication oil metal debris sensor includes applying an excitation to the lubrication oil metal debris sensor to be calibrated, obtaining a second output signal from the lubrication oil metal debris sensor to be calibrated based on a test metal ball with a known diameter, and determining a sensitivity characteristic parameter of the lubrication oil metal debris sensor to be calibrated according to the diameter of the test metal ball with the known diameter, the second output signal, and a preset data processing model. Large particulate metal balls with large diameter are used as calibration particles. The calibration performed by the combination of the particulate metal ball and the data processing model helps when the signal processing circuit cannot be matched with the actual performance of the sensor and avoids an underestimation of the monitoring capability of the lubrication oil metal debris sensor.

A method for isolation and restoration for a multi-core sensor system within a taxi is provided. This method can intelligently determine whether the reason for an abrupt dramatic change in the data detected by sub-sensor is a sensor fault or sudden pollution, so as to increase the reliability of the data detected by the sub-sensor. This method can automatically determine if the repair can be performed when a device fault occurs, so as to ensure the continuity of the detection data of the sub-sensor, which has significant value for continuous monitoring required for a haze treatment operation. In addition, human and material resources for device maintenance may be saved, thereby reducing waste.