16 results about "Hollow-cathode lamp" patented technology

The utility model provides a hollow cathode lamp and lamp holder aligning device which comprises a pneumatic three-jaw chuck and a concentric base used for clamping a lamp holder, the front end of the pneumatic three-jaw chuck is provided with three clamping jaws in an annular structure, the inner wall of each clamping jaw is provided with an arc-shaped structure attached to a lamp tube, the rear end of the pneumatic three-jaw chuck is connected with a speed reducer, and the speed reducer is connected with the concentric base. And the rear end of the speed reducer is connected with a servo motor. According to the utility model, the precision and efficiency in the bonding process of the cathode lamp are obviously improved, errors caused by manual operation are reduced, and the quality consistency of products is improved.

The present application relates to the technical fields of spectral analysis and substance detection, and discloses a deuterium lamp device and an atomic absorption spectral analysis method and system using the deuterium lamp. The system comprises a hollow cathode lamp unit, a built-in hollow cathode lamp emitting a first light beam after preheating under power supply; a first lens, a second lens and a third lens, a deuterium lamp device for emitting a second light beam at a first frequency under the driving of a pulse power supply; a sample cell for internally placing a sample to be measured in a combustion state; a monochromator for performing spectral processing on the incoming first light beam and / or the second light beam, and outputting the spectrally processed light signal to a photoelectric detector; the photoelectric detector for photoelectrically converting the light signal output by the monochromator to obtain an electric signal; and a data processing unit for analyzing and processing the electric signal of the photoelectric detector to obtain an analysis result. The present application can realize more accurate background deduction and improve the accuracy and reliability of atomic absorption spectral measurement.

The invention discloses a quality control device and method for multivitamins for injection, and relates to the technical field of vitamin preparation, the technical key points are as follows: the quality control device comprises a sample collection mechanism, a liquid guide tube, an electromagnetic metering valve and a test tube transfer assembly; the sample pretreatment mechanism is provided with a stirring assembly and an automatic dilution assembly, and the automatic dilution assembly comprises a high-precision capacity metering device and a flow control valve; the high performance liquid chromatography detection mechanism is provided with a plurality of chromatographic columns, a mobile phase conveying system containing a high-pressure pump, a detection wavelength adjusting device, an automatic sample injector and a data processing system; the atomic absorption spectrometry detection mechanism is provided with a hollow cathode lamp; the infrared spectroscopy detection mechanism is provided with an interferometer and a detector; the quality control process management system is constructed based on a programmable logic controller and an industrial computer and is provided with a state indicator lamp and an alarm device; the online quality monitoring system comprises a data processing unit and a network communication unit; according to the invention, convenience can be ensured, and efficiency and automation degree are improved.

The invention discloses an ultra-narrow band optical filter absolute frequency reference in-situ calibration device which comprises a hollow cathode lamp, the output end of the hollow cathode lamp is connected with one input end of a one-to-two optical fiber through a light beam coupling device, and the output end of a variable diaphragm is connected with the other input end of the one-to-two optical fiber through an optical fiber; light beams output by the one-to-two optical fiber are split, the first split beam is input to the second photoelectric detector, and the second split beam transmits the ultra-narrow band light filter and is detected by the first photoelectric detector; the invention further discloses an in-situ calibration method for the absolute frequency reference of the ultra-narrow band light filter, the center transmission wavelength of the etalon is calibrated through the absolute wavelength of the hollow cathode lamp, the etalon is accurately controlled at constant temperature and constant voltage, the center transmission wavelength of the etalon is calibrated, and the calibration of the center wavelength of the etalon is integrated with an external optical signal detection function; and through the automatic calibration process, the calibration efficiency is greatly improved, manual operation errors are avoided, and a high-precision calibration task can be completed in a short time.

The utility model provides a spectrophotometer easy to maintain, and solves the problems that a hollow cathode lamp is usually in a plug type and is fixed through a threaded cover to prevent the hollow cathode lamp from loosening in the rotating process, and the replacement and maintenance process is relatively tedious, time-consuming and labor-consuming when a plurality of hollow cathode lamps are replaced and maintained in the mounting mode. The clamping and fixing mechanism is arranged on the lamp holder of the spectrophotometer main body to clamp and fix the hollow cathode lamps, so that the plurality of hollow cathode lamps can be prevented from loosening during rotation switching, and the rotating plate in the clamping and fixing mechanism can simultaneously separate the plurality of first clamping plates from the second clamping plates during rotation, so that the clamping and fixing effects of the hollow cathode lamps are improved. A worker can conveniently replace and maintain a plurality of hollow cathode lamps at the same time, and the maintenance process is simplified; and meanwhile, after the rotating plate is loosened, the rotating plate can automatically reset through the sliding block under the action of the spring to clamp the hollow cathode lamp, so that the maintenance efficiency is improved.

The application provides a kind of laser radar exit laser frequency calibration device and method based on hollow cathode lamp, it is related to the technical field of laser radar, device includes: laser generation device, including first seed source and second seed source, the output frequency of one continuous light of first seed source is locked after frequency and the other continuous light is combined after frequency beating, compare output frequency with target frequency, generate the approximate value of lock frequency deviation;The continuous light output by second seed source is amplified after frequency calibration and output;Light source module is used to produce as incident light;Energy regulation module is used to adjust the light intensity of incident light;Absorption signal detection module includes hollow cathode lamp and reflector, for obtaining target saturated absorption spectrum, based on lamb dip method, the continuous light output by second seed source is calibrated according to target saturated absorption spectrum and the approximate value of lock frequency deviation.The frequency locking precision can be improved to 1MHz, which helps high-resolution detection of vertical velocity.

This application discloses a light source alignment device for a hollow cathode photoelectric spectrometer. The device includes a first-direction motion track, a second-direction motion track, a third-direction motion track, a hollow cathode lamp, a lamp holder, a driver, and a controller. The first-direction motion track, the second-direction motion track, and the third-direction motion track are arranged in a three-dimensional spatial coordinate system. The hollow cathode lamp is fixed to the lamp holder. The output terminal of the controller is connected to the control signal input terminal of the driver. The actuating terminal of the driver is connected to the lamp holder via a transmission device to drive the hollow cathode lamp fixed to the lamp holder to move along the first-direction motion track, the second-direction motion track, and the third-direction motion track. In this embodiment, the offset of the light source is corrected in three dimensions, which can improve the accuracy of light source correction and thus improve the reliability of the hollow cathode photoelectric spectrometer.

The invention belongs to the technical field of analysis and detection, and particularly relates to a hollow cathode lamp energy dynamic compensation light path for an atomic fluorescence spectrometer and a light intensity compensation method. The hollow cathode lamp energy dynamic compensation light path comprises a hollow cathode lamp, a lamp coding plate, a spectroscope, a band-pass optical filter and a photodiode, the lamp coding plate is in signal connection with the hollow cathode lamp, light emitted by the hollow cathode lamp passes through the spectroscope, and part of the light is reflected by the spectroscope to enter the band-pass optical filter and then enters the photodiode; the other part of the light enters the atomizer through the spectroscope and is detected by the photomultiplier; wherein the lamp coding board and the photodiode are in signal connection with the main control board. According to the hollow cathode lamp energy dynamic compensation light path for the atomic fluorescence spectrometer and the light intensity compensation method, one-time calibration and one-time measurement are not needed, the calibration frequency is reduced, the reagent dosage and carrier gas are saved, the operation and maintenance cost is reduced, the measurement accuracy and stability of equipment are improved, and the service life of the hollow cathode lamp is prolonged.

The utility model discloses a hollow cathode lamp light adjusting device belongs to hollow cathode lamp field, including inner sleeve, the outer wall of inner sleeve is provided with screw thread, the inside right -hand member of inner sleeve is fixed with convex lens, and the front end of inner sleeve is connected with outer sleeve through screw thread structure, and the inner wall of outer sleeve is provided with screw thread, and the right -hand member of outer sleeve is fixed with concave lens, and the left -hand member of inner sleeve is connected with lock nut through screw thread, and lock nut inlay has O type rubber ring. The utility model hollow cathode lamp light adjusting device is fixed to the ordinary hollow cathode lamp lamp shell, and realizes focusing through the screwing of outer sleeve, can make the output light convergence into approximate parallel light column, realizes different combination through the replacement of the convex lens and concave lens of different focal length, realizes the light adjusting requirement of the output different thickness light column, owing to the light of output approximate column, has improved the light utilization.

The utility model provides a hollow cathode lamp control system of a spectrograph, and relates to the field of control circuits. Comprising an AC input unit, a rectification boost circuit, a high common mode current sampling circuit, a forward and reverse and current switching circuit, a hollow cathode lamp, a switch tube Q3, a voltage regulation circuit, a control unit, a power switch circuit, an isolation amplification circuit, an interface circuit and a main and auxiliary board switching circuit. According to the utility model, the rectification boost circuit, the high common mode current sampling circuit, the voltage regulation circuit and the isolation amplification circuit are arranged to realize real-time data acquisition, and the working state and performance parameters of the hollow cathode lamp can be timely acquired; the brightness is accurately adjusted through the control unit, the switch tube Q3 and the forward and reverse and current switching circuit according to the working state of the hollow cathode lamp, so that stable operation and high-efficiency output of a lighting system are ensured; double control units are achieved through the main and auxiliary board switching circuit, and the double control units can work independently and can also be matched with other control units.

The utility model relates to the technical field of atomic absorption spectrometers, and discloses an on-line atomic absorption spectrometer for heavy metals in water, which comprises a turntable, a connecting base is mounted at the top of the turntable, a hollow cathode lamp is inserted into the inner wall of the connecting base, an outer sliding chute is formed in the outer wall of the connecting base, and the hollow cathode lamp is connected with the outer sliding chute. An inner sliding groove is formed in the outer wall of the bottom of the hollow cathode lamp, and fixing plates are slidably connected to the inner walls of the outer sliding groove and the inner sliding groove. A fixing plate is pulled outwards, then a protruding block corresponds to a vertical groove, then the hollow cathode lamp is inserted into a connecting base, force is released from the fixing plate, and at the moment, a first sliding rod is supported through a supporting spring, so that the fixing plate is reset; therefore, the problems that when an existing hollow cathode lamp is installed, the hollow cathode lamp is installed on a base through a threaded ring, the threaded ring needs to be arranged on the hollow cathode lamp in a sleeving mode during installation, then the hollow cathode lamp is inserted into the base, the installation process is complex, and rapid replacement and maintenance are not convenient are solved.

The invention relates to the technical field of spectral analysis and substance detection, and discloses a deuterium lamp device and an atomic absorption spectrum analysis method and system using a deuterium lamp. The system comprises a hollow cathode lamp unit, wherein a built-in hollow cathode lamp emits a first light beam after being electrified and preheated; the first lens, the second lens, the third lens and the deuterium lamp device are used for emitting a second light beam according to a first frequency under the driving of the pulse power supply; the sample pool is used for accommodating a to-be-detected sample in a combustion state; the monochromator is used for carrying out light splitting processing on the entered first light beam and / or second light beam and outputting a light signal after light splitting to the photoelectric detector; the photoelectric detector is used for performing photoelectric conversion on the optical signal output by the monochromator to obtain an electric signal; and the data processing unit is used for analyzing and processing the electric signal of the photoelectric detector to obtain an analysis result. According to the invention, background deduction can be carried out more accurately, and the accuracy and reliability of atomic absorption spectrum measurement are improved.

The invention discloses a hollow cathode lamp wick concentricity correction device and method.The hollow cathode lamp wick concentricity correction device comprises a hollow cathode lamp power source, a lamp holder fixing seat, a two-degree-of-freedom displacement table, an optical imaging unit, an image acquisition unit and an image processing unit, and the hollow cathode lamp power source is electrically connected with a to-be-corrected hollow cathode lamp to supply power to the to-be-corrected hollow cathode lamp; the lamp holder fixing seat is used for fixing the lamp holder, the two-degree-of-freedom displacement table is connected with the lamp shell and then used for adjusting the relative position of the lamp shell and the lamp holder, the optical axis of the optical imaging unit is arranged on the center axis of the lamp holder and used for obtaining light spots of light emitted by the hollow cathode lamp to be corrected, and the image collecting unit collects light spot images and transmits the light spot images to the image processing unit. And the image processing unit identifies the central position of a light spot in the image and determines the eccentricity of the lamp shell to control the two-degree-of-freedom displacement table to adjust the relative position of the lamp shell and the lamp holder. The assembling concentricity error of the lamp holder and the lamp shell of the hollow cathode lamp is controlled and corrected by utilizing the microscopic optical imaging technology, and the accuracy and the stability of the hollow cathode lamp are improved.

The invention discloses a light source centering method of a hollow cathode photoelectric spectrometer and a related product. The method comprises the following steps: obtaining a first centering position of the hollow cathode lamp in a first direction according to the distance between the hollow cathode lamp and an original point and the distance between the hollow cathode lamp and a lens cone; the hollow cathode lamp is controlled to move to a first centering position in the first direction, and the initial positions of the hollow cathode lamp in the second direction and the third direction are obtained; based on the initial position of the hollow cathode lamp in the second direction and the initial position of the hollow cathode lamp in the third direction, a single-axis centering method is used in the second direction and the third direction respectively, and a second centering position and a third centering position which enable the spectral intensity to be maximum all the time in the respective directions are obtained; and controlling the hollow cathode lamp to move to the second centering position and the third centering position in the second direction and the third direction respectively. According to the embodiment of the invention, the offset of the light source is corrected in three dimensions, the correction accuracy of the light source can be improved, and the reliability of the hollow cathode photoelectric spectrometer is further improved.

The application provides a laser saturation absorption frequency stabilization device and method, and relates to the technical field of laser frequency stabilization. The laser saturation absorption frequency stabilization device comprises four modules, namely, an outgoing light path module, a probe light path module, a pump light path module and a signal processing and feedback module. The outgoing light path module comprises a half wave plate HWP0, a polarization beam splitter PBS0 and a half wave plate HWP1. The probe light path module comprises a polarization beam splitter PBS1, a lens LENS0, a hollow cathode lamp, a lens LENS1 and a polarization beam splitter PBS2. The pump light path module comprises a mirror MR0, a lens LENS2, an acousto-optic modulator and a mirror MR1. The signal processing and feedback module comprises a photodetector, an FPGA, a radio frequency switch, a voltage-controlled oscillator and an amplifier. The application simplifies the device of the original saturation absorption frequency stabilization method, is easy to adjust, and improves the stability of the laser frequency stabilization.

The application provides a spectrum detection system for detecting the safety and quality of fruit and vegetable nutrition, and relates to the technical field of spectrum detection, which comprises an automatic sample feeder, the top of the automatic sample feeder is provided with a multi-hole sample disc which is driven to rotate by a motor, a gas-liquid separation device is fixedly arranged on one side of the automatic sample feeder, a suction arm is slidably arranged above the automatic sample feeder, a cross arm is arranged above the suction arm, a sample feeding needle is fixedly arranged below the moving end of the cross arm, an optical detection bin is fixedly arranged on one side of the gas path system bin, a unified wide spectrum ultraviolet light source is adopted to cooperate with a scattering light channel, a single light source is used to simultaneously provide uniform and stable excitation light for multiple detection channels, a plurality of hollow cathode lamps do not need to be configured, the hardware cost of the equipment is greatly reduced, the cumbersome steps of light path calibration of multiple light sources are omitted, and the daily maintenance difficulty is significantly reduced, and the problem that each light source of a conventional equipment needs to be individually calibrated for light path and is difficult to maintain is solved.