7 results about "White Cell" patented technology

The invention relates to the field of trace element detection, in particular to a system for detecting the concentration of trace elements in water. The gas chamber is connected with the atomization device, is internally provided with a light path capable of dynamically adjusting the White cell, and is used for enhancing a spectral absorption signal of the low-concentration trace elements; the light path modulation module is mounted on the side wall of the gas chamber; the temperature control module is used for adjusting the temperature of the optical element and the air chamber; the spectrum detection module is arranged behind the light outlet of the gas chamber and is used for detecting a spectrum signal after the aerosol is absorbed; the ionization and mass spectrum module comprises an ionization source and a mass spectrometer, the ionization source is used for ionizing the aerosol in the gas chamber into ions, and the mass spectrometer is used for separating the ions according to the mass-to-charge ratio and detecting the ions. According to the invention, a spectrum and mass spectrum combined technology is adopted, a water sample to be detected is atomized into aerosol water drops, and high-sensitivity detection of trace elements in water is realized by enhancing a spectrum absorption signal of low-concentration trace elements.

The invention belongs to the technical field of gas detection, and particularly relates to a sulfur hexafluoride (SF) concentration detection method and device based on a dual-band tunable diode laser absorption spectrum (TDLAS) and electronic equipment. In order to solve the problems that in an existing SFdetection technology, quantification and positioning functions are separated, the anti-interference capability is poor, and high sensitivity and rapid imaging cannot be synchronously achieved, the invention provides a method combining dual-band differential absorption and TDLAS. According to the scheme, a detection device in which an open type backward reflection path is combined with a built-in White cell (a multi-reflection cell) is adopted, 10.55 microns are selected as a measurement wave band, and 9 microns are selected as a reference wave band; through synchronous or alternate acquisition of dual-band signals, wavelet denoising preprocessing, differential absorption concentration inversion, Kalman filtering gas cloud tracking and Gaussian plume model leakage source inversion, rapid imaging positioning and accurate concentration quantification of an SFleakage point are realized. The system has the advantages of high detection sensitivity, strong anti-interference capability and integrated quantitative positioning function, and is suitable for efficient inspection and accurate diagnosis of the SFleakage of the power equipment.

The invention discloses a device capable of being used for detecting the concentration of various gases based on the White cell principle, and a plurality of light splitting reflectors plated with different light splitting films are sequentially arranged on an emergent light path of a White cell, so that the different light splitting reflectors can reflect laser in a specific wave band and transmit and reflect laser outside the wave band; a photodiode matched with the reflection wave band of the corresponding light splitting reflector is arranged on the reflection light path of each light splitting reflector, so that the same gas cell can be correspondingly matched and provided with a plurality of photodiodes suitable for different wave bands, and therefore, the purpose that multiple photodiodes are matched and mounted in one gas absorption cell can be realized; and the body concentration of various gases with large absorption wavelength difference is detected, so that the use of a plurality of gas absorption pools is avoided, the volume of the detection system is reduced, and the cost is saved.

The present application relates to the technical field of optical reflection cavities. Provided are an optical reflection cavity, an optical multi-pass cell system, and an optical resonant cavity system. In the optical reflection cavity provided in the embodiments of the present application, a first sub-plane mirror is introduced into a plano-concave cavity, the first sub-plane mirror is disposed in an edge region of a main plane mirror in a y-axis direction and is inclined relative to the main plane mirror in the y-axis direction, and the length of the first sub-plane mirror in an x-axis direction is at least one times the width of a trajectory of a light beam on the main plane mirror in the x-axis direction, so that the light beam can be reflected by the first sub-plane mirror at least once, and the translation direction of the trajectory is continuously changed after the light beam is reflected by the first sub-plane mirror, so as to increase the number of reflections of the light beam within a limited volume, thereby increasing an optical path length and the distribution density of reflected light spots. Compared with a Herriot cell and a White cell, more reflections, a larger optical-path-length-to-volume ratio and a higher distribution density of the light spots can be achieved.

The present invention provides an open multi-reflection White cell infrared spectroscopic analysis system applicable to gas detection in a smog chamber, which includes a smog chamber, a Fourier transform infrared spectrometer and an industrial control computer, a multi-reflection White cell, a mirror, a pipeline and a lifting device, etc. The multi-reflection White cell includes a main mirror member, a secondary mirror member, a secondary mirror adjustment member, an incident and an exit parabolic mirror adjustment member, etc. The coupling methods between the spectrometer and the smog chamber mainly include an incident method, an exit method and a spectrometer installation method. In the incident method, by adjusting the plane mirror in the sample chamber, the modulated light is converged and incident on the smog chamber at a specific angle; in the exit method, through the turning of multiple plane mirrors, the exit light is guided back to the optical axis of the sample chamber; in the connection method, it is hermetically connected through a plane mirror mounting table and the smog chamber, and the spectrometer is hermetically connected to the mounting table through a pipeline; the spectrometer is mounted on a platform, and a lifting adjustment device is placed on the platform to ensure that the optical axis of the spectrometer is aligned with the optical axis of the smog chamber.

A spectral gas sensor (1) comprising a multi-path absorption cell (4) is described. The multi-path absorption cell (4) comprises: a component reflector unit (5) defining a concave first surface (6 ') having a first center of curvature (19) and comprising at least one first reflector (6); and a main reflector unit (7) comprising a concave second reflector (8) defining a second center of curvature (17) and a concave third reflector (9) defining a third center of curvature (18). The component reflector unit (5), the second reflector (8) and the third reflector (9) are arranged in a White cell configuration. The light source (11) is configured to emit and direct light towards the concave second reflector (8). A first detector (15) is arranged in the component reflector unit (5) such that the first detector is illuminated by a light spot during operation of the gas sensor (1). The component reflector unit (5) comprises an optical return unit (20) comprising a light input (LI) at a first distance from the longitudinal optical plane (C).

The present invention relates to the field of trace element detection, and in particular to a system for detecting trace element concentrations in water, comprising an atomizing device; an air chamber connected to the atomizing device, the interior of which is provided with a dynamically adjustable White cell optical path for enhancing spectral absorption signals of low-concentration trace elements; an optical path modulation module installed on the side wall of the air chamber; a temperature control module for adjusting the temperature of the optical element and the air chamber; a spectral detection module arranged behind the light outlet of the air chamber for detecting spectral signals after absorbing aerosol; an ionization and mass spectrometry module comprising an ionization source and a mass spectrometer, the ionization source being used to ionize the aerosol in the air chamber into ions, and the mass spectrometer being used to separate the ions according to the mass-to-charge ratio and perform detection. The present invention adopts a spectral and mass spectrometry-combined technology to atomize a water sample to be tested into aerosol droplets, and by enhancing the spectral absorption signals of low-concentration trace elements, achieves high-sensitivity detection of trace elements in water.