A laser gas detection system includes a laser gas detector and a near-eye display device. The laser gas detection system provided in the present disclosure incorporates modern display technologies and modern communication facilities to present detection results to a user of the laser gas detection system in various intuitive and highly readable forms. The laser gas detection system is further capable of projecting the detection results to a field of view of the user through the near-eye display device.

A microorganism detection system is provided for being disposed on a device to be detected which is closed, including a flow channel and a detection module. A fluid to be detected in the device to be detected flows in the flow channel. The detection module is disposed within the flow channel, including two slides, a microscopic module and at least one telescopic mechanism, each of the at least one telescopic mechanism is connected to one of the two slides and the flow channel. When the two slides approach each other, the fluid to be detected in a gap between the two slides is observable through the microscopic module.

A gas sensor system for use in an exhaust gas tube, the system having at least two separate optical sensor assemblies that are separately positioned across the exhaust gas tube from one another, wherein the optical sensor assemblies each comprise a pair of light sources and a pair of light receivers such that light from each of the multiple light sources is received by each of the four light receivers, thereby generating multiple sets of optical measurements.

Disclosed is an imaging system which includes an imaging device to be used by multiple users, allows each user to perform imaging at an appropriate timing, and is capable of efficiently using the imaging device. An imaging system includes an imaging device, a plurality of terminal devices, and an authorization unit which gives the terminal devices the authority to specify controllable functions of the imaging device. The authorization unit switches between a first state where the terminal devices are given a first authority to exclusively occupy a part of functions of the imaging device with a controllable state and a second state where one terminal device is given a second authority to exclusively occupy and control the part of functions and to release the occupation, and the terminal devices other than one terminal device are given a third authority with the restriction of the control of the part of functions.

A characteristic information extraction method of a small-molecule volatile substance, including: dividing a surface-enhanced Raman scattering (SERS) spectrum of the small-molecule volatile substance to obtain n wavelength subintervals, where n is a positive integer; sampling the n wavelength subintervals through weighted bootstrap sampling (WBS) to obtain W wavelength subintervals, where W is a positive integer less than n; and screening the W wavelength subintervals to obtain desired wavelength subintervals. This application also provides a rapid detection method and a portable detection system of a small-molecule volatile substance.

The present invention relates to the technical field of sensor calibration, particularly a calibration system and a calibration method for NDIR gas sensors. The calibration system comprises: a client-server computer network with calibration software, a relay module, a gas source group, a mass flow controller, a high and low temperature chamber, a gas analyzer, and a calibration tooling rack group for implementing broadcasting-style calibration. The calibration method consists of: a Lambert-Beer weighted concentration calculation mode combined with an adaptive piecewise linear temperature compensation mode. Integrating the calibration system and the calibration method can effectively streamline the calibration process, improve the calibration accuracy, and reduce the calibration time and cost of the NDIR gas sensors. It can, therefore, conveniently realize a simultaneous calibration of many NDIR gas sensors for mass production and enable a greener production environment with a higher degree of carbon neutrality.