48 results about "Window detector" patented technology

An apparatus to provide an augmented reality includes a window detector to determine a first region and a second region; an information processor to identify a first portion of a virtual-world image layer to be displayed in the first region based on a first viewing direction; and an image processor to display the first portion in the first region, and to display a real-world image layer in the second region. A method for providing an augmented reality includes determining a first region and a second region; identifying a first portion of a virtual-world image layer to be displayed in the first region based on a first viewing direction; and displaying the first portion in the first region, and displaying a real-world image layer in the second region.

The invention provides an apparatus and a method for determining the frequency of a radio frequency signal. The coherency of a received signal is determined and only the frequency of a coherent signal is determined. Zero amplitude transitions of coherent signals are counted in respective time periods. If the counts in each time period agree within a quantization error, the accumulated counts for a fixed time period are employed to determine a frequency. The frequency determining apparatus and method are particularly useful with a frequency agile radio receiver for detecting the presence of radio frequency signals from nearby mobile and stationary transmitters. Upon determination of the frequency of the nearby transmitter, the channel of transmission can be determined from a memory within the receiver and the receiver can be tuned to monitor the transmission. Additional tests to verify the frequency determination may be applied using squelch and window detector circuits of the radio receiver.

The invention discloses an in-car air conditioning system and aims to provide the in-car air conditioning system which is high in safety and comprehensive in function. The in-car air conditioning system comprises a controller, a fan, a pipeline, an oxygen sensor, a window and door detector, an alarm device and a human body inductor, wherein the fan, the pipeline, the oxygen sensor, the window and door detector, the alarm device and the human body inductor are respectively and electrically connected with the controller; the pipeline is connected with the interior and the exterior of a car; and the fan is arranged in the pipeline. After the system starts working, whether a person is in the car or not is detected by the human body inductor. If the human body detector detects no person, whether car doors and car windows are closed or not is detected through the door and window detector, and if the car doors or the car windows are not closed, an alarm is given through the alarm device after the time reaches a threshold value. If the human body detector detects that the person is in the car, oxygen concentration in the car is detected through the oxygen sensor. When the oxygen sensor detects that oxygen concentration in the car is lower than the threshold value, the fan is started by the controller to suck the air outside the car into the car to realize an outside loop to supplement the oxygen content in the car, and therefore, oxygen deficit or suffocation accident is avoided occurring.

The invention relates to an idle frequency band detector applied to a UHF frequency band, characterized by comprising a set of broadband receiving branches and a multi-window detector. Signals received by a broadband antenna are sequentially input to a radio frequency wave filter, a low-noise amplifier and an adjustable trap wave filter, and down conversion is carried out on the signals by a frequency mixer and a voltage controlled oscillator; the down-conversion signals are converted by an A / D converter into digital signals to be stored in a register, and the digital signals are input to the multi-window detector; the digital signals are input to a multi-window spectrum estimation module after being segmented by a signal segmenting module; a multi-window spectrum estimation method is utilized to carry out power spectrum estimation on the digital signals, and then a multi-window detection algorithm is utilized to judge whether the signals comprise ATSC DTV signals or wireless microphone signals. The idle frequency band detector not only can be used for detecting the ATSC DTV signals or wireless microphone signals in an extreme low signal-to-noise environment, but also can be used for achieving a frequency spectrum perception function of a cognitive radio system.

Methods, systems, and processor-readable media for detecting the side window of a vehicle. A spatial probability map can be calculated, which includes data indicative of likely side window locations of a vehicle in an image. A side window detector can be run with respect to the image of the vehicle to determine detection scores. The detection scores can be weighted based on the spatial probability map. A detected region of interest can be extracted from the image as extracted image patch. An image classification can then be performed with respect to the extracted patch to provide a classification that indicates whether or not a passenger is in the vehicle or no-passenger is in the vehicle.

The invention discloses a smart home monitoring system based on NB-IOT, which comprises a home device, a home monitoring center and an alarm system. The home device comprises a first wireless communication module, a monitoring module, a power device, a gas device and a water device. The home monitoring center includes a central processor, a second wireless module and a network access module. The alarm system includes an infrared detector, a door and window detector, a smoke detector, a gas detector and an alarm. The alarm system is connected with a security device. The monitoring module monitors operation conditions of the power device, the gas device and the water device. Monitoring data obtained is sent to the second wireless module via the first wireless module, and the second wirelessmodule sends monitored data to the central processor. The smart home monitoring system based on NB-IOT realizes the real-time monitoring of the home by monitoring the power device, the gas device andthe water device by the monitoring module.

The invention relates to the field of a method for detecting gas concentration by adopting a non-dispersive infrared technology, and specifically relates to a self-correction method for detecting carbon dioxide concentration by adopting the non-dispersive infrared technology. According to the method, detection is performed by adopting an non-dispersive infrared detector, the non-dispersive infrared detection part comprises an infrared source, a single-window detector, a gold-plating gas chamber and a data acquirer, wherein a temperature sensor is arranged in the single-window detector, and a buffer area and a register are arranged in the data acquirer. The self-correction method is characterized by performing the steps of preparing, self-correction data processing and temperature compensating in sequence. The method provided by the invention is precise and reliable to measure, strong in interference resistance, and good in long-time working stability.

Disclosed herein is a data communication method and apparatus for transmitting and receiving data in the form of a square-wave signal having a specific amplitude using an AC power line between a transmitter and a receiver connected in a closed circuit by cutting an AC voltage waveform and loading the data on the AC voltage waveform. The transmitter comprises a transmitter power supply unit 10, a data window detector 20 for clamping a voltage signal from the power line N to detect a section of the voltage signal on which data will be loaded, a microcomputer 30 for transmitting the data in a data-loading period and controlling data transmission in response to a reception feedback signal from a receiver, a data modulator 40 for loading the data transmitted from the microcomputer 30 on the voltage signal from the power line N in the form of a pulse signal, a pulse level controller 50 for adjusting a drive voltage of the data modulator 40 to control a data transmission pulse level to be stabilized, and a reception detector 60 for feeding back information on whether the receiver receives the signal transmitted from the transmitter to the microcomputer 30. The receiver comprises a data window detector 80, a data pulse detector 90 and a microcomputer 100. Logic circuits can replace the microcomputer 100.

A low cost fault detection and protection method and embodiment circuit can detect short circuit faults between an inverter system control (ISC) circuit outputs and a chassis, an electrical machine winding and a chassis, and a DC bus and a chassis. A fault protection unit (FPU) can monitor chassis voltage with respect to a DC bus to detect the presence of a short circuit fault, and provide status output indication of whether a fault is detected. By way of example, an FPU can include a window detector and a signal transmitter. An FPU can provide status output to an ISC controller configured to terminate ISC operation when any of the aformentioned faults is present, thereby preventing damage to devices contained in the ISC circuit.

The problem of watermarking a sequence of images from a motion picture can be divided into two parts. The first part is embedding watermarks in the sequence of images. The second part is detecting embedded watermarks in a target sequence of images where the target sequence may have resulted from one or more attacks on an original sequence of images in which the watermarks were embedded. Motion pictures are watermarked by embedding information in different ways in different images. In general, the information to be embedded is used to define a plurality of watermark images. Each watermark image is an apparent pattern of noise in both signal and frequency domains, and is different from the other watermark images. Preferably, each watermark image is temporally uncorrelated with the other watermark images. Each watermark image is used to modify a corresponding image from the motion picture. To detect the presence of the information in a target sequence of images from a motion picture, the target images are processed to determine an alignment with a watermark sequence. When an alignment with the watermark sequence is determined, a sliding window detector is applied to detect the watermark and read the information embedded by the watermark. By embedding the same information in different ways in different images, and then detecting this information by combining data from the different images, the sensitivity of the detector is increased.

The invention provides an apparatus and a method for determining the frequency of a radio frequency signal. The coherency of a received signal is determined and only the frequency of a coherent signal is determined. Zero amplitude transitions of coherent signals are counted in respective time periods. If the counts in each time period agree within a quantization error, the accumulated counts for a fixed time period are employed to determine a frequency. The frequency determining apparatus and method are particularly useful with a frequency agile radio receiver for detecting the presence of radio frequency signals from nearby mobile and stationary transmitters. Upon determination of the frequency of the nearby transmitter, the channel of transmission can be determined from a memory within the receiver and the receiver can be tuned to monitor the transmission. Additional tests to verify the frequency determination may be applied using squelch and window detector circuits of the radio receiver.

A video window detector includes a region characteristic determiner to generate at least one characteristic value for at least one region of a display output; a characteristic map generator to generate an image map from the at least one characteristic value for at least one region of the display output; and a window detector to detect at least one video window dependent on the image map.

The invention provides a SAR image sparse regularization feature enhancement method aiming at interpretation, which comprises the following steps: a SAR image feature enhancement model based on a sparse regularization framework is established; The SAR image feature enhancement model based on sparse regularization framework is solved by using the iterative threshold algorithm based on L1 / 2 norm, and the SAR image feature enhancement results are outputted. The regularization feature enhancement method of SAR image takes target detection of SAR image as the final goal, judges the feature enhancement changes of potential target region and background region through the designed rectangular window detector, and optimizes the regularization parameters adaptively. The final image enhancement results can effectively improve the target detection rate of the existing SAR target detection algorithm and reduce the false alarm rate.

The invention provides a liver capsule wire automatic extracting method based on a liver ultrasonic image. The method includes the steps of S1, processing a to-be-processed ultrasonic image containinga liver section / part through a sliding window detector, establishing a plurality of channels in an image block corresponding to a window, and extracting pre-selected random rectangular features to obtain a detection response map; S2, extracting a complete liver capsule wire from the detection response map, wherein the liver capsule wire is a maximum detection response continuous curve from a leftside boundary and a right side boundary in the detection response map. By means of the method, the liver capsule wire can be automatically extracted from the liver ultrasonic image without manual intervention, and furthermore, the accuracy of the capsule wire generated through the method is greatly improved compared with the accuracy of a traditional method.

The invention discloses an alarm system for automatically reminding door / window closure. According to the technical scheme, the alarm system comprises a controller, at least one door / window detector, a defense timer, a reminding timer and an indicator, wherein the controller is respectively connected with the door / window detector, the reminding timer, the defense timer and the indicator. By the adoption of the timed defense mode, a user can set a certain time before going out or falling asleep according to the law of life, so that the system reminds whether the door / window is closed; the system can be in defense at the moment of starting the timed defense, even if the door or window is not closed, and the other areas except the door or window are warned; and meanwhile, at the moment of starting the timed defense, even if the door or the window is not closed, the indicator does not give reminding indication, so that the user who falls asleep is not disturbed.

A video window detector includes a region characteristic determiner to generate at least one characteristic value for at least one region of a display output; a characteristic map generator to generate an image map from the at least one characteristic value for at least one region of the display output; and a window detector to detect at least one video window dependent on the image map.

A system and method for Flex Over or On Suspension (FOS) fault detection under a write gate for magnetic disk drives may employ a flex over suspension fault comparator that compares a predetermined reference threshold to a positive delta of a disk drive write head data stream and outputs a positive or negative FOS fault indication. A max / min buffer detects polarity of a disk drive read / write head and applies a positive buffered delta to the fault comparator. A transition-free window detector triggers the fault comparator to output the fault indication when a transition-free window of zero-value data bits of a predetermined length is detected from the disk drive head, and the transition-free window detector provides a fault validation signal to validate output of the fault comparator when the transition-free window of zero-value data bits of the predetermined length is detected from the disk drive head.

The invention discloses a car window control system and method. The car window control system comprises a car window detector and a controller, wherein the car window detector is used for detecting whether foreign matter exists on car window glass or not; and the controller is connected with the car window detector for judging whether the foreign matter exists on the car window glass or not after receiving a window dropping instruction of the car window glass, and controlling and keeping the car window glass immovable if the foreign matters exists on the car window glass. When car dropping needs exist, the car window detector is used for detecting whether the foreign matter exists on the car window glass or not in advance; window dropping operation is not performed if it is detected that the foreign matter exists on the car window glass, the position of the car window glass is kept immovable, a user can clear the foreign matter on the car window glass, and selects operations of dropping the window again and the like to effectively prevent the problems such as working noises of the mechanism and even functional failure as the foreign matter on the car window glass is collected into a car window lifting mechanism by mistake when the user does not notice. The invention further discloses a vehicle.

A spatial optical axis offset system for a refrigeration type infrared thermal imaging lens comprises a front lens set, a relay inverted image front set, a first reflector, a second reflector, a relayinverted image rear set, a detector protecting window, a detector sensing face and an inclined cushion block; the included angle formed between the first reflector and the relay inverted image frontset is 45 degrees, and the second reflector is perpendicular to the first reflector; it is defined that the long side direction of the detector sensing face is the axis x of a coordinate system, and acertain included angle is formed between the axis x and a connecting line between the center of the front lens set and the center of the detector sensing face; the inclined cushion block is of a triangular prism structure, the edges are arranged in the length direction of a lens cone, and the upper edges are parallel to the connecting line between the center of the front lens set and the center of the detector sensing face; by adjusting the inclined angle of the side, close to the lens cone, of the inclined cushion block, optical axis offsetting can be achieved.

The invention discloses an indoor door and window detector for effectively improving measurement accuracy, relates to the technical field of indoor door and window detection, and aims to solve the technical problem of poor sealing between a door and window frame and an abutting plate. According to the technical scheme, the abutting plate includes a left side plate, a right side plate, a top plateand a bottom plate; pressing bars for abutting a door and window in the direction of the abutting plate are arranged at the positions, located at the abutting plate, of a rack, a mounting groove is formed in the outer side wall, towards the pressing bars, of the abutting plate, the length direction of the mounting groove is along the length direction of the abutting plate, and a rubber sealing block is arranged in the mounting groove; an embedding hole is formed inside the abutting plate in the length direction, and an electric heating rod is arranged in the embedding hole; and the rubber sealing block is heated and bulged, so that the rubber sealing block tightly abuts against the abutting plate, the sealing between a door jamb and the abutting plate is effectively maintained, and sealingbetween the door jamb and the left side plate, the right side plate, the top plate and the bottom plate is effectively maintained.

The invention discloses a wireless door and window joint control device and relates to the technical field of households and offices. The wireless door and window joint control device comprises a plurality of door and window detectors and a main control module, wherein the door and window detectors are used for detecting the open-close states of doors and windows, and the main control module is provided with a wireless receiving unit and a decoding unit. The door and window detectors code the open-close state information of the doors and windows and then transmit the information to the main control module in a wireless transmission manner, and the main control module controls an air conditioner to be turned on or turned off according to the information. When the door and window detectors detect that all the doors and windows are closed, the main control module turns on the air conditioner, and the main control module turns off the air conditioner as long as the door and window detectors detect that one door and window is not closed. By means of the wireless door and window joint control device, the problem of energy waste can be solved.

The disclosure relates to a system and a method for detecting pulses in received signals in a streaming manner. A threshold detection method is fused with a double-difference phase modulation detection method to provide a higher-performance method of pulse detection for any digital receiver. The first pulse detection technique uses a signal power threshold. When the square of the magnitude of a pulse crosses the signal power threshold, the beginning of a pulse is declared and pulse processing starts. The second pulse detection technique is model based and uses a windowed detector that crossesa phase difference threshold when the pulse has consistent second-order (in general d-th order) difference phase values within the window. The first technique has low latency and is independent of pulse width, but only operates well at SNR values greater than 15 dB. The second technique has higher latency and requires a minimum pulse width, but operates at lower (approximately 0 dB) SNR values.

The invention discloses a building safety protection terminal with multiple protections, including a controller, a photoelectric sensor, an alarm host, and a gas detector. When a criminal enters a factory important office to steal properties at night, a photoelectric switch sensor is triggered to work and send a signal to the controller, and the controller starts a USB camera to capture a theft video of the criminal and sends the theft video in an email to a monitoring worker via Ethernet. The photoelectric sensor is configured to transmit the signal to the controller when detecting that the criminal enters the factory important office. The alarm host is used for receiving door and window detector collection information and infrared radiation fence collection information and sending the same to the controller for determination and controlling an alarm whistle to give an alarm if an abnormality exists. The gas detector is configured to monitor the concentration change of the combustiblegas and send the same to the alarm host. Through the above principle, the building safety protection terminal can not only monitor, detect, and stop the theft behavior of a thief timely, but also canmonitor the concentration of the combustible gas in the factory to avoid spontaneous combustion.

The invention discloses a smart home monitoring system which includes an information acquisition system, a control system and an information processing system. The information acquisition system includes an infrared detector, a door and window detector, a rolling gate detector, a smoke detector, a gas detector and a monitoring device. The control system includes a central control system and an alarm control system. The output end of the central control system is electrically connected with the input end of the alarm control system. The central control system includes an automatic water spraying device, a mobile phone receiver, a computer receiver, a fixed-line telephone receiver, a central heating, a lighting control device, a household appliance control device, a fresh air system, and anautomatic door and window locking device. Through the setting of various detectors, the monitoring coverage of the home system is greatly improved, the home can be effectively monitored in real time,and the defects of the existing smart home monitoring system are overcome.

The invention discloses an intelligent fire alarm system, which comprises an alarm host, a signal collecting terminal and a remote terminal; the signal collecting terminal comprises a far infrared detector, a smoke detector, a door and window detector, a coal gas detector and a wireless communicator; output ends of the far infrared detector, the smoke detector, the door and window detector, and the coal gas detector are connected with the wireless communicator, and the signal collecting terminal is connected with an information classifying system through the wireless communicator; an output end of the information classifying system is connected with the alarm host, and the alarm host is connected with a video monitor, an alarm whistle and a property management office; the output end of thealarm host is connected with the alarm whistle and the property management office, and the alarm host is in wireless connection with the remote terminal. The intelligent fire alarm system can timelyfeedback the collected information to a user or the property management office, and facilitate people to take effective measures to prevent signal interruption caused by artificial wire breaking or wire burnout when fire disaster occurs.

The invention discloses a window handle multifunctional detection machine, which includes a workbench, and is characterized in that it also includes a usability test device and a strength performance test device; the usability test device includes a simulated window; a swing cylinder is fixedly connected to the mounting plate , the swing cylinder is connected to the "7"-shaped transmission rod, and the "7"-shaped transmission rod is directly below the simulation window and the movable sleeve assembly is set on the cross bar; one side of the mounting frame is provided with a cantilever beam, and the other end of the cantilever beam is connected with a nylon wedge seat The strength performance testing device includes a bearing platform, a loading plate, a loading head, a transmission shaft and a handle frame; the handle frame is arranged under the bearing platform; the strength performance testing device also includes a weight for loading the load plate. Realize the operation torque test, wind pressure test, closed gap test, service life test and additional operating force test of the test handle on the same workbench, and truly simulate the use of the handle without increasing the need for test execution. Hand wear.