275 results about "Active infrared" patented technology

A passive / active infrared imaging system apparatus for mounting on a head / helmet includes a passive infrared camera Head Pack having a removable narrow band filter cover, an objective lens, a beam splitter, an uncooled focal plane array (UFPA) package, an interface board, and a display unit such a liquid crystal display (LCD), with forward / back, up / down, and tilt adjustment functions fitting any mask, mounted in the front of said head / helmet for converting infrared light images into electronic signals. An electronic unit coupled between the UFPA of the infrared camera and the display unit, includes a controller for processing video signals from the infrared camera and supplying them to the display unit. The electronic circuit includes a wireless video & audio transceiver, a piezoelectric microphone, a voice controller, and a neural network pattern recognition chip. The display unit (such as LCD)] is inside the head pack and mounted on the head / helmet for converting electronic signals into visible light images, so that it is in front of eyes of a user, so that the user can directly view an external scene without blocking his normal vision, if the optical axis of the display unit is aligned with the optical axis of the objective lens, the system parallax is eliminated. A Battery Pack having a video controller board and battery is mounted on the rear of the head / helmet so that it gives the video output and power to the infrared system. An eye-safe near infrared laser diode with corresponding optical and electronic attachments mounted on the head / helmet illuminates targets to get images through same passive infrared system.

The present invention discloses an interactive presentation system which allows a presenter to perform a presentation while having various interactions directly with presentation material images in real time through a gesture or / and voice. The interactive presentation system comprises: an active infrared camera; a command recognition system connected to the active infrared camera; and an image synthesis system connected to the active infrared camera and the command recognition system. The presentation system may further comprises a stereo camera set for properly synthesizing a presenter in a 3D image and a 3D motion system. By this configuration, it is possible to embody an interactive presentation system in which a command through a presenter's gesture or voice is processed in real time and the image of the presenter is synthesized in a presentation material screen in real time, and accordingly the audiovisual effect is maximized.

A presence detector includes an optical emitter for emitting optical radiation, an optical detector for detecting a presence of an object based on receiving the optical radiation, and a microcontroller for controlling the optical emitter and processing the optical detector output, such that a range adjustment and range hysteresis based on the object are provided by software in the microcontroller.

The device according to the invention provides a non-contacting temperature sensing device incorporating micro-bolometric detectors as the suitable infrared sensors for automotive applications. A first and second infrared sensors each include an active infrared sensing element and a temperature drift compensating element. A current bias is applied to the active infrared sensing element as well as to the temperature drift compensating element, which is identical in structure with the active infrared sensing element, and the voltage outputs of these two elements pass through a differential amplifier. The fluctuation in the substrate temperature or the ambient temperature affects the active sensing element and the compensating element in the same way, thus it is cancelled out. Instead of using one spectral band of the infrared radiation, as in the prior art, two spectral bands are used resulting in a first and second signal generated by the first and second infrared sensors. A ratio of the first and second signals is obtained. The ratio of the signals is emissivity independent, so that the device of the present invention provides a more accurate measurement of temperature. The need to compensate for window contamination is also eliminated by this two band approach. The filtering elements for the two bands can be multi-layer thin film filters either coated on flat windows or on diffractive micro-lenses. The use of diffractive micro-lenses further reduces the size of the device, and eliminates the need for a separate optical lens.

An access control system for a passageway having a passageway barrier including an active infrared sensor device and a locking mechanism for selectively locking and unlocking the passageway barrier. The active infrared sensor device includes an infrared emitter, an infrared receiver having one or more position-sensing photodetectors operative for receiving infrared light and generating a signal corresponding to a position and / or intensity of the reflected infrared light, and a processing unit operative for detecting a change between a first signal generated by one or more position-sensing photodetectors after receiving reflected infrared light at a first location on one or more position-sensing photodetectors and a second signal generated by one or more position-sensing photodetectors after receiving infrared light reflected in response to the object moving into the surveillance area and for controlling an operation of a locking mechanism based on the change.

The present invention discloses an interactive presentation system which allows a presenter to perform a presentation while having various interactions directly with presentation material images in real time through a gesture or / and voice. The interactive presentation system comprises: an active infrared camera; a command recognition system connected to the active infrared camera; and an image synthesis system connected to the active infrared camera and the command recognition system. The presentation system may further comprises a stereo camera set for properly synthesizing a presenter in a 3D image and a 3D motion system. By this configuration, it is possible to embody an interactive presentation system in which a command through a presenter's gesture or voice is processed in real time and the image of the presenter is synthesized in a presentation material screen in real time, and accordingly the audiovisual effect is maximized.

The invention relates to one intelligent trace system and discloses one system to focus its upper load camera machine onto one or more aim objects through main infrared positioning in level and vertical dimensional angel to judge aim object and system distance. The invention identifies the different aim objects through infrared emission machines codes to compute cameral lens level and forward and focus parameters to drive relative servo work.

An active infrared sensor may include an imaging infrared sensor to provide an output signal conveying time-sequential infrared images of a scene which includes a subject, a beam generator to generate a millimeter wave energy beam, and a processor. An initial infrared image of the scene may be stored in a memory. After storing the initial infrared image, the beam generator may illuminate the subject with the millimeter wave energy beam. A temperature change across the subject due to the millimeter wave energy beam may be estimated based on the output signal and the stored initial infrared image. The beam generator may stop illuminating the subject when a highest temperature change across the subject is at least equal to a predetermined temperature change limit.

The invention discloses an active infrared video based fire smoke detection method in zero-illumination environment. The method comprises the steps of: acquiring active infrared video image data; extracting foreground images from the infrared video image data by a difference method and carrying out intensity value analysis; extracting and analyzing the speed characteristics of clustering centers in the foreground images; calculating an average value and a variance of the speed characteristics of the clustering centers, and comparing a preset threshold value with the calculated variance of the speed characteristics of the clustering centers to judge whether fire-disaster smoke exists in the monitored and limited zero-illumination space or not; if so, giving alarming signals; and if not, returning to the former step to acquire infrared video image data of next frame continuously. In the method, the influence of the background noise of infrared video images is reduced and the active infrared video smoke detection is realized in the zero-illumination environment.

The invention relates to an active infrared wireless capsule endoscopy system. A wireless capsule main body is positioned in a human body; a magnetic driver is positioned outside the human body; the wireless capsule main body is controlled by the magnetic driver to move in vivo; a detector and a signal receiver receive a signal from the wireless capsule main body and then send the signal to an information processing control centre to process the signal; the information processing control centre outputs the signal to a wireless energy emitter which emits energy; the wireless capsule main body receives the energy; and the information processing control centre outputs to a display to display parameters and a virtually reconstructed three-dimensional image. The system can photograph an inner alimentary canal to obtain infrared image information, and a capsule endoscope is controllable, so gastrointestinal endoscopy is controllable; medical workers are provided with a basis for instant, repeated and extensive detection of suspicious focuses at the same time; and the system can photograph the inner alimentary canal to obtain the infrared image information and therefore obtains accurate position information and supplies correct information for subsequent surgeries.

The invention relates to an active infrared tube defect detection method based on electromagnetic induction heating. The method is characterized in that stranded wire is uniformly wound on one end of a ferromagnetic bar so as to form a coil; the other end of the ferromagnetic bar penetrates a tube to be detected; two ends of the rod are clamped by using ferromagnetic fixtures, such that a closed magnetic yoke is formed; high-frequency current is conducted on two joints of the coil for carrying out electromagnetic induction heating; during heating, two thermal infrared imagers are arranged on two sides of the tube with an included angle of 180 DEG, such that changes of surface temperature distribution characteristics with time can be observed, and tube defect can be detected. The method has the advantages of low heating device cost, simple structure, uniform heating, and high efficiency. With the method, surface and internal defects such as corrosion cracks, impurities, pores, and the like can be well detected from tube surface temperature distribution characteristics.

A position tracking system includes an infrared-sensitive device, such as an infrared camera that generates signals in response to detected infrared light in a field of view of the infrared-sensitive device. A processor is responsive to the signals generated by the infrared-sensitive device for determining a position of the detected infrared light. The processor also generates tilt and pan signals based on the position of the detected infrared light. A tilt and pan mechanism moves a visible-light video camera in response to the tilt and pan signals from the processor. The active infrared light-emitting device includes a loop having at least two infrared light-emitting elements disposed along the loop, on opposite sides of the loop. A control box is disposed in the loop and is in electrical communication with the infrared light-emitting elements. When the loop is disposed around an object that rotates relative to the infrared-sensitive device, a constantly unimpeded viewing channel is provided between the infrared-sensitive device and at least one of the elements due to the positioning of the elements. The position information obtained from the infrared-sensitive device is used to direct a visible-light camera to track the active infrared light-emitting device in a manner similar to that performed by a human camera operator.

The invention pertains to the technical field of vehicle construction, discloses a blind zone detecting and alarm device for vehicles, wherein, an infrared probe (1) is multiple passive infrared receivers; the alarm device is divided into an audible alarm device and a light stroboflash alarm device. The infrared probe (1), the audible alarm device and the light stroboflash alarm device are all connected with the operating control unit of the vehicle by signal lines. Detection zones cover an A pole blind zone and blind zones at the side and the back of the vehicle by adopting the technical proposal, and the disadvantages of poor active infrared anti-jamming performance and complex structure are overcome; the passive infrared detector does not emit any radiation and has the advantages of quite low device power consumption, high sensitivity, comparatively good invisibility, low cost, convenient arrangement and being artistic and practical; the mode combined with the audible alarm and the light stroboflash alarm gives drivers sufficient alarm information to guarantee driving safety.

A revolving security door includes a drum defining a secure zone between door openings controlled by a revolving door disposed within the drum and wherein light curtain sensors and active infrared sensors may detect an intruder moving from a non-secure side of the doorway to the secure side and detect objects left behind in a secure zone. Methods of operation prevent persons or objects from passing from the non-secure side to the secure side of the doorway.

The invention discloses an active light source-based image acquisition method and a system. The method comprises the time sequence synchronism of an active infrared light source and an image sensor, as well as self-adaptation image intensity control. The system comprises four parts including an active infrared light source unit, a synchronism and light intensity control unit, a self-adaptation synchronism and light intensity detection unit and an image sensor unit. According to the invention, aiming at requirement of high quality infrared imaging and considering influence of different lighting and time sequence control on the quality of the image, the active infrared imaging quality is well ameliorated via solving the problems of the matching and light intensity regulation of the active infrared light source and the image sensor in the active imaging system, and favorable image basis is provided for subsequent image processing system and operation.

The invention discloses an all-weather multipath channel pedestrian flow monitoring system based on wireless infrared monitoring. The system comprises a video acquisition terminal, wherein the video acquisition terminal comprises active infrared monitoring cameras and video acquisition modules both installed at the inlets of various pedestrian flow monitoring channels, a codebook background module, an image preprocessing module and a wireless transmission module; and the system further comprises: a central server terminal for receiving acquired pedestrian flow data and performing projection, tracking and counting, wherein the central server terminal comprises a wireless reception module, a new pedestrian flow detection module and a pedestrian flow tracking and counting module. The invention provides an all-weather multipath channel pedestrian flow monitoring system based on wireless infrared monitoring, with excellent self-adaptive ability and outstanding reliability.

The invention relates to an intelligent desk with a sitting posture correcting function. The intelligent desk comprises a desktop, desk legs, an infrared transmitter, an infrared camera, a control box and a display panel. A read-write area is arranged on the desktop, the infrared transmitter is used for casting structured light, carrying out active infrared imaging and measuring three-dimensional depth information, the infrared camera is used for photographing change of forms of the infrared structured light under the conditions of human sitting postures, the display panel is used for displaying the sitting postures, and photography results of the change of the forms of the infrared structured light are transmitted to the control box by the infrared camera, so that images are processed, the infrared structured light is measured, the images are three-dimensionally reconstructed, and information of the sitting posture images of users is analyzed and is ultimately transmitted to the display panel. The invention further provides a sitting posture correcting method on the basis of the intelligent desk. The intelligent desk and the sitting posture correcting method have the advantages that the sitting postures can be corrected by the aid of an information technology and an image modeling processing technology, and the users do not feel uncomfortable; the sitting postures of the users can be effectively and accurately corrected, and accordingly impairment to the eyesight of the users due to incorrect sitting postures can be prevented.

Novel systems and methods for remotely detecting at least one constituent of a gas via infrared detection are provided. A system includes at least one extended source of broadband infrared radiation and a spectrally sensitive receiver positioned remotely from the source. The source and the receiver are oriented such that a surface of the source is in the field of view of the receiver. The source includes a heating component thermally coupled to the surface, and the heating component is configured to heat the surface to a temperature above ambient temperature. The receiver is operable to collect spectral infrared absorption data representative of a gas present between the source and the receiver. The invention advantageously overcomes significant difficulties associated with active infrared detection techniques known in the art, and provides an infrared detection technique with a much greater sensitivity than passive infrared detection techniques known in the art.

The invention relates to a robot track teaching device, system and method based on active infrared binocular vision. The problems that according to an existing robot teaching method, feature information is possibly shielded or confused and then needs to be processed manually, the cost is high, the occupied space is large, the calculated amount is large, and the requirement for coordinate system precision is too high are solved. The robot track teaching device based on active infrared binocular vision comprises a laser pen holder, a laser pen, a fixture, a fluorescent plate connection plate, afirst fluorescent plate and a second fluorescent plate; the first fluorescent plate and the second fluorescent plate are each provided with a preset number of balls coated with a fluorescent material;the fixture is fixed to the laser pen holder through screws; the fluorescent plate connection plate is fixed to the laser pen holder through bolts; the laser pen is provided with buttons used for preserving and deleting teaching points. The robot track teaching device, system and method based on active infrared binocular vision are suitable for manufacturing a paint spray robot teaching machine.

A revolving security door includes a drum defining a secure zone between door openings controlled by a revolving door disposed within the drum and wherein light curtain sensors and active infrared sensors may detect an intruder moving from a non-secure side of the doorway to the secure side and detect objects left behind in a secure zone. Methods of operation prevent persons or objects from passing from the non-secure side to the secure side of the doorway.

The invention discloses individual soldier fire protection and disaster rescue equipment based on infrared three-dimensional imaging, which can overcome the difficult that the field view is blocked, provide effective field information to fire protection and disaster rescue personnel and is convenient for developing fire protection and disaster rescue. The equipment comprises a pair of intelligent glasses and an intelligent terminal; the pair of intelligent glasses comprises an infrared transmitter, an infrared camera, a colorful camera, an intelligent glass processor, a mini-type projector and intelligent glass lenses; the intelligent terminal comprises an intelligent terminal processor, an intelligent terminal memory, an intelligent glass communication interface and an external communication interface; a clearer field image can be provided by comparing driving infrared three-dimensional image reconstruction with ordinary thermal imagery; meanwhile, the distance of an object can be detected to form depth information so as to build a three-dimensional image coinciding with the practical environment of a field by adopting a way of transmitting infrared laser in driving infrared three-dimensional image reconstruction. The invention further provides a corresponding individual soldier fire protection and disaster rescue system based on infrared three-dimensional imaging.

An optical transmitter is equipped with a transmitted pulse modulator at which a plurality of optical transmission patterns have previously been stored. The respective stored optical transmission patterns have mutually different ratios between infrared pulse ON times and OFF times. The optical output of infrared signal(s) transmitted from an optical transmitter is made variable as a result of the fact that infrared pulse(s) output during infrared output period(s) is / are output in accordance with an optical transmission pattern which is selected from among the plurality of optical transmission patterns.

The invention provides a three-dimensional hair style design system and method based on a somatosensory sensor. The three-dimensional hair style design system comprises a three-dimensional data collection unit, a three-dimensional model construction unit and a three-dimensional model display unit, wherein the three-dimensional data collection unit is in data connection with the three-dimensional model construction unit, and the three-dimensional model construction unit is in data connection with the three-dimensional model display unit. The three-dimensional data collection unit comprises a rotary mechanism and a somatosensory sensor mechanism arranged in front of the rotary mechanism, wherein the somatosensory sensor mechanism is provided with an integrated active infrared emitter, an infrared camera and a colorful camera and used for collecting people head 360-degree three-dimensional data located on the rotary mechanism, and the somatosensory sensor mechanism is in data connection with the three-dimensional model construction unit. The three-dimensional hair style design system and method based on the somatosensory sensor do not need a complex process of feature matching of a binocular camera, reduce calculation complexity, improve processing speed, and are simple to install and debug, convenient to use and low in achieving cost.

The invention relates to a smart home control system. The smart home control system includes a central controller, an A / D converter, an output controller, an anti-theft detection system, an indoor security detection system, an environmental detection system, an environment control system, an indoor security control system, an anti-theft alarm system, a fire fighting system, a wireless communication system and a wired calling system, wherein the anti-theft detection system includes a wireless door and window magnetic switch sensor, a window opening pressure sensor, a glass broking detector, a video monitoring system, a voice monitoring system, an active infrared detector, a laser detector, a passive infrared detector and a wireless infrared through-beam electronic fence, and the indoor security detection system includes a smoke detection alarm, a flame detection alarm, an electric leakage detector, a gas leakage detector, a water flow sensor, a heat flow sensor and a socket detection sensor. The smart home control system of the invention has the advantages of complete functions, convenience in implementation and suitability for large-scale application.

The invention discloses generating a free viewpoint video through stereo imaging generating. The invention provides a method and a system for generating the free viewpoint video through an active infrared (IR) stereo module. The method comprises a step of calculating (602) a scene depth map by using the active infrared IR stereo module. The scene depth map is calculated by the following steps: projecting an IR dot pattern on the scene; capturing a stereo image from each IR camera of two or more than two synchronous IR cameras; detecting the dots in the stereo image; calculating a feature descriptor corresponding to the dots in the stereo image; calculating a parallax map between the stereo images; and generating the depth map by using the parallax map. The method also comprises the step of generating (604) point clouds of the scene by the depth map, generating (606) a grid of the point clouds and generating (608) a projection texture map of the scene by the grid. The method furthermore comprises the step of generating (610) the video of the scene by the projection texture map.

Pillow with automatic height adjustment comprises: sensor, pillow, lifting mechanism. The wire is installed on one side of the pillow. The sensor is installed on one side of bed or the bed head. The sensor is human body infrared spectrum sensor or active infrared launching and accepting sensor or ultrasonic ranging sensor or microwave ranging sensor. The wire is the sensitive element of the resistive sensor or capacitive sensor. The input terminal of the relay connects to the output terminal of the sensor. The output terminal of the relay is series or parallel with the control switch of the lift mechanism of the pillow. The pillow automatically changes the height of the pillow following the change of the sleep gesture so as to accord with the physiological curve of the human cervical vertebra.

Systems and methods of using active infrared (AIR) sensors to map a room of a home or building and determine whether an external portal (e.g., window and / or door) of the room is open or closed are provided. In particular, the systems and methods include outputting infrared (IR) light from an IR light source of an active infrared (AIR) sensor, receiving reflected IR light with a light sensor, and determining, with a processor coupled to the light sensor, whether a window of a room is open according to the received reflected IR light.

The invention discloses an active infrared thermal image detecting device and method for internal defects of a composite insulator. The active infrared thermal image detecting device is composed of amodulating optical radiation and thermal excitation loading device, an infrared thermal image collecting device, and a control and data processing and analyzing device. The modulating optical radiation and thermal excitation loading device is controlled to carry out controllable thermal excitation on a composite insulator, so that dynamic temperature field data are formed on the surface of the composite insulator; the infrared thermal image collecting device is controlled to collect dynamic temperature field data; and the control and data processing and analyzing device is used for identifyingand analyzing the dynamic temperature field data to obtain specific information of an internal defect of the composite insulator. Therefore, with the active infrared thermal image detecting device and method, problems of low sensitivity, high complexity, high time consumption, high destructiveness, and high detection condition requirement of the existing detection method of the composite insulator defect can be solved.