181 results about "Infrared beam" patented technology

A barrier operating system includes a barrier operator configured to emit a charging signal and configured to open and close a movable barrier. The system also includes a wireless obstruction detection system comprising: a transmitter detector and a receiver detector. The transmitter detector includes a battery; a transmitter configured to transmit an IR beam; a communication module in wireless two-way communication with the barrier operator; and an energy harvester configured to receive the charging signal and direct power to the battery of the transmitter detector. The receiver detector includes a battery; a receiver configured to receive the IR beam from the transmitter; a communication module in wireless two-way communication with the barrier operator; and an energy harvester configured to receive the charging signal and direct power to the battery of the receiver detector.

An arrangement for tracking a position of an individual's eye comprises: (a) a frame mountable on a head of an individual; (b) at least one visually transparent element mounted within the frame in a the field of view of an eye of the individual; (c) at least one infrared light source configured for emitting an infrared light beam; (d) an image sensor configured for capturing images of the eye; (e) a processing unit configured for controlling the infrared light source and the image sensor and detecting a pupil position and a corneal reflection within images captured the at least image sensor. The transparent element comprises a spectrally-selective layer configured for reflecting the infrared beam. The visually transparent element is configured for selectively directing the infrared beam onto the eye and directing an infrared radiation reflected from a pupil and cornea of the eye to the image sensor.

The invention relates to the technical field of intelligent traffic, and discloses a method and device for detecting a thrown object on a road surface, and the method comprises the steps: automatically selecting the wavelength of infrared light according to the environment illumination intensity, and calculating an environment compensation coefficient; the infrared transmitting unit transmits a multi-angle light beam to the infrared receiving unit on the opposite side, and the infrared receiving unit determines the receiving state of the light beam; constructing a fan-shaped infrared beam grid, and determining an area where a suspected target is located; judging whether the suspected target is a thrown object or not, and using an area positioning model for the thrown object to obtain a central position and an effective area; implementing graded alarm; visible light image recognition is replaced by an infrared beam technology, the influence of severe weather on detection precision is effectively overcome through a self-adaptive wavelength selection mechanism, a specific lane where a thrown object is located can be accurately determined in combination with a lane recognition mechanism, and accurate guidance is provided for traffic control and cleaning operation.

The invention discloses an anti-interference method for an ultra-thin light curtain sensor, a sensor, a product and a medium, and relates to the field of light curtain sensors, the method comprises the following steps: an emitter emits infrared light beams in sequence according to an infrared light emitting array to form a detection light curtain; the receiver receives the infrared light beam and converts the infrared light beam into an electric signal to obtain an initial detection signal, the receiver removes an ambient light interference signal in the initial detection signal through band-pass filtering, and compares the filtered initial detection signal with a standard signal feature; the initial detection signals with the standard signal features exceeding a preset matching threshold value serve as effective detection signals, and when a target light path exists in the multiple light paths and the ambient light intensity detected by the receiving unit corresponding to the target light path exceeds a preset ambient light threshold value, the transmitter adjusts the transmitting power of the transmitting unit corresponding to the target light path. By implementing the method, the reliability of the detection result of the light curtain sensor can be improved.

The invention discloses a compact coaxial turn-back type three-waveband multifunctional common-aperture optical system. Belongs to the technical field of photoelectricity, and particularly relates to the technical field of compact coaxial turn-back type three-waveband common-caliber photoelectricity. The problem that an existing aperture-dividing type optical system is difficult to miniaturize and light and has chromatic aberration is solved. The device comprises a coaxial turn-back type afocal objective lens, a laser emission light path, a short-wave imaging light path and a medium-wave imaging light path, a laser beam emitted by a laser emission light path is emitted to a target through a coaxial turn-back type afocal objective lens, the target reflects the laser beam and a short-wave infrared beam to the coaxial turn-back type afocal objective lens, and meanwhile, the target radiates a medium-wave infrared beam to the coaxial turn-back type afocal objective lens; the coaxial turn-back type afocal objective reflects the laser beam and the short-wave infrared beam to the short-wave imaging light path for imaging, and the coaxial turn-back type afocal objective reflects the medium-wave infrared beam to the medium-wave imaging light path for imaging.

The utility model belongs to the technical field of optics, and particularly relates to a large-magnification infrared beam expanding and focusing lens, which comprises a first lens, a second lens, a third lens and a fourth lens which are sequentially arranged along the propagation direction of a light path, the total length of the large-magnification infrared beam expanding and focusing lens is 110mm, and the distance between the first lens and the second lens is 0mlt; l1lt; 2 mm; the distance between the second lens and the third lens is 23 mlt; l2lt; 25 mm; the distance between the third lens and the fourth lens is 52 mmlt; l3lt; 54mm, 54mm; the full field of view of the large-magnification infrared beam expanding and focusing lens is + / -0.1 degrees, the entrance pupil diameter is 60mm, and the exit pupil diameter is 7.5 mm. The total optical length of the lens is short, the number of the lenses is small, the lens has the 1550 nm wavelength signal transmitting and receiving functions at the same time, and the size and weight of an optical system are reduced; all the lenses adopt standard spherical lenses, so that the development and processing cost is reduced, and the processing, detection and adjustment difficulty of the lenses is reduced.

The invention discloses a compact off-axis reflection type three-waveband multifunctional common-caliber optical system. Belongs to the technical field of photoelectricity, and particularly relates to the technical field of compact off-axis reflection type three-waveband common-caliber photoelectricity. The laser, short-wave infrared and medium-wave infrared common aperture and laser emission and receiving integrated optical design are realized, and the target detection, positioning aiming and laser guiding performance of the system is improved. The system comprises an off-axis reflection type afocal objective lens, a laser emission light path, a short-wave imaging light path and a medium-wave imaging light path, a laser beam emitted by a laser emission light path is emitted to a target through an off-axis reflection type afocal objective lens, the target reflects the laser beam and a short-wave infrared beam to the off-axis reflection type afocal objective lens, and meanwhile, the target radiates a medium-wave infrared beam to the off-axis reflection type afocal objective lens; the off-axis reflection type afocal objective reflects the laser beam and the short-wave infrared beam to the short-wave imaging light path for imaging, and the off-axis reflection type afocal objective reflects the medium-wave infrared beam to the medium-wave imaging light path for imaging.

The invention discloses a new energy station intrusion detection method based on a linkage technology, equipment and a medium, and relates to the technical field of new energy station safety protection, electronic pulse fences, infrared correlation and video acquisition equipment are deployed, perimeter signals and images are acquired, multi-source data are fused through space-time calibration and a D-S evidence theory, a target is detected by using a YOLOv5 model, and a new energy station intrusion detection result is obtained. Kalman filtering is used for predicting a track, distinguishing normal operation and intrusion behaviors, setting a three-level response mechanism, triggering sound-light alarm, access control blocking and the like, data are stored, a model is optimized regularly, environment self-adaptive adjustment can be achieved, operation areas can be dynamically divided, and the detection reliability is improved. According to the invention, intelligent detection and linkage response of new energy station intrusion are realized, the false alarm rate is significantly reduced, the target detection precision and trajectory prediction accuracy are improved, the response time is shortened, the maintenance cost is reduced, the data security is enhanced, a security guarantee is provided for unattended operation, and the management efficiency and security are improved.

The invention relates to the technical field of gas detection, and discloses an underground pipe gallery leakage gas identification system based on infrared spectroscopic analysis, comprising an acoustic sensor unit passively monitoring a pipe gallery acoustic signal and generating a wake-up instruction and azimuth information, the infrared spectrum analysis module emits infrared beams with specific wavelength combination to a pre-estimated leakage sector according to the azimuth information and receives a returned light signal to generate spectral data; and the control processing unit analyzes the spectral data and judges and confirms a leakage event in cooperation with the azimuth information. According to the method, energy efficiency mode innovation from continuous scanning to event driving is realized through a cooperative mechanism of acoustic triggering and infrared directional detection, and the accuracy and response speed of trace leakage identification in a complex environment are remarkably improved by combining a differential spectrum technology and spatial coding logic verification.

The invention discloses a monitoring signal compensation system and method for a selective laser melting process. The monitoring module is additionally arranged in the selective laser melting equipment; a laser beam is divided into two paths after reaching the spectroscope through the collimator; one path of light beam reaches a power meter, the power meter converts a received optical signal into an electric signal and outputs the electric signal to a data processing module, and the stability and change of the laser power are monitored; the other light beam irradiates metal powder, and part of the light beam is absorbed by the metal powder to be molten to form a molten pool; a thermal radiation infrared beam emitted by a molten pool outwards is reflected by a dichroscope, filtered by an infrared narrow-band filter and transmitted by a focusing lens and then reaches a photodiode, and a corrected two-dimensional signal distribution diagram is obtained by aligning an output voltage signal with an actual printing position and compensating and correcting light intensity data; and finally, performing feature correspondence and analysis on the two-dimensional signal distribution diagram and the measured data of the power meter. The method can be widely applied to the field of SLM process monitoring.

The invention relates to the technical field of storage automation, and particularly provides a system for carrying out figure separation and direction identification based on a light curtain. A light curtain unit in the system is used for transmitting and receiving infrared light beams and detecting the shielding condition of the light beams; the light curtain unit collects shielding information that the moving target shields the light beam emitted by the light curtain emitter in real time, and transmits the shielding information to the control unit; the control unit is used for processing the data acquired by the light curtain unit, analyzing the shielding length, the motion characteristic, the shielding characteristic and the light intensity attenuation curve of the light beam by the data, identifying a human body and an object, and judging the motion direction of the human body and the object; the output unit is used for transmitting an identification result of the control unit to an external execution unit to trigger corresponding control logic; the alarm reset unit is used for automatically resetting after an alarm event is relieved when alarm is detected, and an object staying in a protection area is sent away from the protection area, the system efficiently and accurately recognizes the human body and the object, the movement direction of the human body and the object can be judged, and system paralysis is avoided.

The invention relates to the technical field of femtosecond laser nonlinear frequency conversion, and discloses a femtosecond third harmonic light path control method and device, equipment and a medium. The method comprises the following steps: dividing infrared light output by a femtosecond laser into two paths according to a certain proportion by using an infrared beam splitter, namely a first path of infrared light and a second path of infrared light; the first path of infrared light enters a frequency doubling crystal for frequency doubling to generate green light, and the generated green light is subjected to beam shaping through a green light beam expanding system, so that the spot size of the shaped green light is matched with the spot size of the second path of infrared light; time delay control is applied to the second path of infrared light, so that the corresponding pulses are overlapped in time; and the second path of infrared light after time delay control and the green light after light beam shaping are combined through the spectroscope and then jointly enter a frequency combination crystal for frequency combination, the Gaussian energy distribution of the second path of infrared light and the Gaussian energy distribution of the green light are used for frequency combination, and ultraviolet light output is generated.

Improvements in spectroscopy are disclosed herein that rely on the interaction of both an infrared beam and a probe beam with a sample. These beams are used in a pump-probe arrangement, with a fiber optic probe collecting the beams of infrared and probe radiation from the infrared source and delivering it to the sample. At least a portion of the beam of infrared radiation and the beam of probe radiation overlap one another on the sample. The fiber also collects probe radiation that has interacted with the sample. A detector can use this collected signal to indicate an intensity of the collected probe radiation, and an analyzer can generate a signal indicative of infrared absorption of the sample adjacent the fiber.

The invention relates to the technical field of basketball sports, and discloses a basketball shooting scoring system and an infrared induction mirror surface diffuse reflection detection method, and the system comprises an infrared emission module which is used for emitting an infrared signal; the infrared receiving module is used for receiving the reflected infrared signal; the mirror reflection structure module is used for reflecting the infrared beam at a preset angle; the data acquisition module is used for acquiring the state of the reflected optical signal; the trajectory analysis module is used for generating spectrum data, and the score output module is used for displaying shooting scores in real time; the method comprises the following steps: transmitting an infrared signal; receiving an infrared signal and generating disturbance data; forming a signal reflection and interference area; generating a path disturbance matrix; track analysis and feature extraction; track judgment and score feedback; and recording data and outputting a result. The design of combining the infrared transmitting module and the infrared receiving module is adopted, an infrared light path can be accurately constructed, and the basketball shooting track can be captured.

The invention relates to an elevator system with a combined LiDAR and visible light sensor guide, in particular to a sensor having a housing extending from a front portion to a rear portion wherein the front portion has a transparent cover glass; an infrared (IR) beam emitter within the housing that emits a first beam along a first path; a visible light beam emitter within the housing that emits a second light beam along a second path that is not consistent with the first path; and a beam guide within the housing that engages the first and second beams such that the first and second beams are coaxial or parallel and exit the front of the housing.

The utility model provides an ice maker full ice sensing device, including ice storage bucket, stirring subassembly, first sensing subassembly and control device, the ice storage bucket is suitable for storing the ice block that is conveyed by ice making subassembly, including bucket body and is suitable for closing bucket body, the stirring subassembly includes motor and stirring bar, the first sensing subassembly includes the motor and the stirring bar, and the control device includes the motor and the stirring bar. The motor drives the stirring rod to rotate so as to adjust the ice block stacking posture and prevent ice blocks from freezing, the first induction assembly is suitable for monitoring the ice block stacking height, and the control device is suitable for receiving signals of the first induction assembly and controlling the ice making assembly to start and stop according to the signals. The first sensing assembly comprises a first emitter suitable for emitting infrared light beams and a first receiver suitable for receiving the infrared light beams, the first emitter and the first receiver are oppositely arranged in the ice storage bucket, and when ice blocks block a propagation path of the infrared light beams between the first sensing assembly, the control device is suitable for controlling the ice making assembly to stop working. According to the utility model, the control device can intelligently control the start and stop of the ice-making assembly according to the signal of the first induction assembly, so that the automatic control of the ice-making process is realized.

The invention relates to the technical field of metro seats, and provides an electric folding seat with an anti-pinch function and a whole vehicle unified control, the electric folding seat comprises a mounting base, the mounting base is used for integrally mounting the seat, one side of the mounting base is provided with a seat backrest used for supporting the back of a passenger, and the other side of the mounting base is provided with a seat backrest used for supporting the back of the passenger. A seat for hip supporting is arranged at the bottom of the seat backrest, folding and unfolding assemblies used for folding and unfolding the seat are arranged on the two sides of the seat backrest, and by arranging recognizers, telescopic air cylinders and other structures, the recognizers are distributed in mounting through grooves in the two sides of the seat to monitor obstacles on the movement path of the seat in real time; when infrared light beams are shielded, the displacement sensor immediately feeds back position signals of the telescopic shaft, the air cylinder is triggered to move reversely through the CAN bus, clamping injury is avoided, the safety protection efficiency is improved, and through the technical scheme, the problems that in the prior art, the anti-clamping function is insufficient, and the comfort degree is insufficient are solved.

The utility model discloses an optical fiber adapter, which comprises a shell, a connecting sleeve, a shielding door and a reset piece, and adopts the technical scheme that the shielding door is used for shielding a first port of the shell, and the shielding door has a closing trend under the action of the reset piece, so that the shielding door is always in a closed state when no external force is applied; on one hand, damage to human eyes caused by leakage of high-intensity infrared beams can be effectively prevented, and on the other hand, dust can be effectively prevented from entering the adapter, so that the optical transmission stability after optical fiber connection is ensured. Moreover, when the optical fiber connector is in butt joint with the first port, the optical fiber connector can directly abut against the shielding door and is inserted into the first port, in the process, the first port is always blocked, and infrared beams can also be prevented from leaking out, so that an operator does not need to wear a protective tool in the butt joint process, and the assembly convenience is greatly improved.

The present invention relates to a wafer rapid thickness measurement system based on fiber-optic differential, including a light source module, a beam splitter module, a measuring path, a reference path, a detector module and a main control module, wherein: the light source module is used to generate and output a near-infrared light beam; the measuring path is used to converge the measuring light beam and incident on a wafer sample to be measured to form a small light spot, and the reflected light reflected by the wafer to be measured is returned to the beam splitter module and then enters the detector module, and a measuring path shutter is arranged on the measuring path; the reference path is used to converge the reference light beam and incident on a reference sample to form a small light spot, and the reflected light reflected by the reference sample is returned to the beam splitter module and then enters the detector module, and a reference path shutter is arranged on the reference path; the detector module includes a near-infrared high-resolution spectrometer. The present invention also provides a wafer rapid thickness measurement method using the above system.

Various imaging systems and methods for identifying and removing spots associated with infrared beams emitted by a ranging and detection system on digital images of a scene are disclosed. The imaging system generates an image of a single scene on an image sensor with a different spectral response and uses the resulting image signal to reduce or remove spots on the modified digital image. Additionally, the imaging system uses the image signal to monitor the performance of the image sensor and generates an alarm signal indicating that an image sensor malfunction has been detected.

A method for processing a plurality of bird eggs, particularly unfertilized eggs, comprising: a step of transporting a first egg (E1) having a first eggshell color and a second egg (E2) having a second eggshell color along a transport path, wherein the first eggshell color is different from the second eggshell color; a step of illuminating the first egg (E1) with an illumination beam (B) of infrared light, wherein at least a portion of the light is transmitted through the egg (E1) and detected by a near-infrared light detector (5); a step of illuminating the second egg (E2) with an illumination beam (B) of near-infrared light, wherein at least a portion of the light is transmitted through the egg (E2) and detected by a near-infrared light detector (5); and to determine the shell condition of each egg (E1, E2), the step of processing the light detection result of the infrared light detector (5) is included, and the detection of the illumination and / or transmitted light of the eggs (E1, E2) is performed under substantially the same illumination and / or detection conditions, respectively.

This invention provides an intelligent safety management method and system for boiler walkway gratings, relating to the field of industrial safety technology. The method includes: S1, acquiring in real-time the obstruction signal sequence generated by an infrared beam sensor deployed at the grating inlet and the weight signal sequence generated by a pressure sensor deployed below the grating, and synchronizing the obstruction and weight signal sequences with timestamps; S2, inputting the synchronized obstruction and weight signal sequences into a pre-constructed lightweight spatiotemporal feature extraction network to extract multi-dimensional temporal features representing personnel flow, object presence, and weight distribution; and inputting these multi-dimensional temporal features into a risk fusion inference engine built based on Dempster-Shafer evidence theory. This system can eliminate perceptual ambiguity, overcome decision-making rigidity, and mine data value in the harsh edge environment of boiler walkways, achieving progressive intelligent safety management from precise risk identification to dynamic and flexible assessment and early hazard insight.

The invention discloses a zebra fish pain response testing device for Chinese herbal medicine breeding, which comprises a plurality of branch water tanks, the plurality of branch water tanks are connected through a G selection pool to form a six-way water tank, and the plurality of branch water tanks are communicated with the G selection pool; the tail end of each branch water tank is an electric shock end for the zebra fish to receive electrical pain stimulation, the electric shock end is provided with an electrode plate for providing electrical stimulation for the zebra fish, an inlet of the electric shock end is provided with an infrared correlation trigger area for detecting whether the zebra fish passes through or not, and the electrode plate is connected with an electric shock module for providing voltage for the electrode plate. The technology has a multi-channel parallel test capability and an automatic electrical stimulation triggering function, can shorten an experimental period, reduces invalid stimulation, provides stable and reliable data support for pain mechanism research and drug screening, and improves research efficiency and scientificity.

The utility model discloses a spectrum detection device for sulfur hexafluoride gas concentration, which relates to the technical field of sulfur hexafluoride concentration detection and comprises a device main body, a detection probe is arranged outside the device body, an adjusting assembly is arranged on one side of the detection probe, an air inlet pipe is fixedly connected to one side of the device body through an external air pump, and a drainage pipe is fixedly connected to the side, away from the air inlet pipe, of the device body. The detection probe emits laser or infrared light beams to directly penetrate through a gas area to be detected, the concentration is inverted by measuring attenuation of transmission light or reflected light, the position of the detection probe is adjusted through the adjusting assembly so as to adapt to different areas, the sulfur hexafluoride gas concentration can be rapidly inspected and detected in real time, and the practicability of equipment is improved. When leakage is found, the device is switched to a suction mode, gas is sucked into the device body through the gas inlet pipe, the concentration and decomposition products are accurately measured, the two modes can be switched according to detection targets, environmental conditions and maintenance capacity, and various requirements are met.

The invention relates to the technical field of material detection, in particular to an infrared inspection device for a helicopter composite material. The device comprises a base 2, a clamping mechanism 4 and a lifting frame are arranged above the base 2, the clamping mechanism 4 is arranged above the lifting frame, and the lifting frame ascends and descends relative to the base 2; the clamping mechanism 4 is sleeved with a sleeve frame 43, a clamping device is arranged below the sleeve frame 43, and the clamping device is clamped at the top of the composite material; the device further comprises an infrared transmitting module 3 and an infrared receiving module 5, the infrared transmitting module 3 and the infrared receiving module 5 are installed on the lifting frame, and the infrared transmitting module 3 and the infrared receiving module 5 synchronously move relative to the lifting frame. The infrared emission module 3 is used for emitting infrared light beams to irradiate the composite material, and the infrared receiving module 5 is used for receiving the infrared light beams transmitted by the composite material.

To improve sampling time while collecting microscopic data on the composition of a sample over a wide field of view.SOLUTION: The system includes an infrared radiation source 200 configured to illuminate a broad area of a sample with a beam of infrared radiation, a probe radiation source 222 configured to illuminate the broad area of the sample with a beam of probe radiation, a collector 212 configured to collect as collected probe radiation at least a portion of the probe radiation from each of a plurality of spatially resolved locations on the sample, and at least one camera 250 configured to detect as collected probe radiation at least a portion of the probe radiation from each of the plurality of spatially resolved locations on the sample and generate a signal indicative of infrared absorption corresponding to each of the plurality of spatially resolved locations.SELECTED DRAWING: Figure 2

The embodiment of the present application provides a device for detecting wear of a subway power supply contact network line, comprising a detection module, the detection module including an infrared laser and an infrared camera, the infrared laser being used to emit an infrared beam to the surface to be tested of the contact network line and forming a detection area on the surface of the contact network line, the infrared camera being used to capture an image to be tested of the detection area; the infrared laser being rotatably arranged at the open end of a U-shaped frame by a rotating support shaft; when the infrared camera is used to capture an image of the detection area, the image capture position of the infrared camera is adjusted by a lateral displacement structure; and an image processor being further provided, the image processor being used to receive the image to be tested captured by the infrared camera, the image processor having a built-in image recognition module, the image recognition module being used to identify the wear condition of the detection area based on the image to be tested. The detection device provided by the embodiment of the present application effectively solves the technical problem of relatively low detection result accuracy of existing detection devices.

The application relates to the field of automatic detection sensors, in particular to an ultrathin area light curtain sensor which comprises a light projector, a light receiver and a warning mechanism, the light projector comprises a base, a circuit board, an infrared beam emitter, a rotating rod and an adjusting assembly, one end of the rotating rod is fixedly connected to the base, the other end of the rotating rod away from the base is rotationally connected to the circuit board, the adjusting assembly is used for driving the rotating rod to rotate, the circuit board is fixedly connected with the infrared beam emitter on the side away from the base, a Fresnel lens is fixedly connected to the side of the infrared beam emitter away from the base, infrared light beams emitted by the infrared beam emitter pass through the Fresnel lens and are output to infrared receiving photoelectric devices, the warning mechanism is electrically connected to the circuit board, and the warning mechanism is used for issuing a signal to warn a user. The application has the effect that the mounting frame can easily receive infrared light beams when being inclined, the effectiveness of the infrared light beams is guaranteed, and the application range of the light curtain sensor is increased.

The invention relates to an illumination device (10) for motor vehicle (22), wherein the illumination device (10) comprises at least one infrared light source (11) which is adapted to emit light in the infrared range. The illumination device (10) is configured to emit a multitude of infrared light beams or infrared light cones (13) generated by the at least one infrared light source (11) from a multitude of infrared light emitting positions (12) dispersed over an area, wherein said infrared light emitting positions (12) are spaced at least 1 cm apart from each other.

This application provides a green fiber laser, comprising, in sequence, a high repetition rate (PRR) polarization-maintaining fiber laser, a first Brewster window, a second half-wave plate, a first plano-convex lens, a laser crystal, a second plano-convex lens, and a first dichroic mirror. The PPR fiber laser outputs a high repetition rate polarization-maintaining fundamental frequency signal light. The first Brewster window is an optical lens placed at a Brewster angle, and the 1000-1100nm fundamental frequency signal light passing through the first Brewster window has a specific polarization state. The second half-wave plate can be rotated to adjust the polarization state rotation angle of the infrared beam after passing through the first Brewster window. By using the second half-wave plate and the first Brewster window to adjust the polarization state rotation angle to a suitable polarization state, the optical-to-optical conversion efficiency of the entire system is greatly improved, resulting in high repetition rate, high energy conversion efficiency, high power, and stable green light output.