154results about How to "Easy to detect in real time" patented technology

A presence device operable in a first mode and a second mode is associated with a communication device. In the first mode, a user using the presence device is biometrically authenticated and a presence confirmation input is received from the communication device. In the second mode, a user-entered log-in input is received from the communication device. A central presence database is updated to indicate that the communication device is active for the user. A received message which is to be routed to the user is sent to the active device indicated by the central presence database.

The present invention provides a method for detecting a specific object in an image to be detected, including: a feature extraction step for extracting an image feature of the image to be detected; and a detection step for detecting detection windows with various sizes of the image to be detected according to the extracted image feature by using classifiers with various sizes corresponding to at least a part of the detection windows with various sizes, so as to determine the presence and location of a specific object in the image to be detected. The invention further provides an object detection device and a system including the device. The method, device and system for detecting a specific object in an image to be detected can improve the precision and increase the speed of the object detection.

The invention relates to a dynamic brain function detection method and system based on a near infrared spectrum and blood pressure information. The method comprises the steps that 1, near infrared spectrum detection equipment is used for collecting a brain blood oxygen signal of a testee, and meanwhile blood pressure equipment is used for collecting arterial blood pressure of the testee; 2, a brain blood oxygen signal and the blood pressure signal collected in the step 1 are input into a wavelet coherence analysis module, the wavelet coherence analysis method is used for performing time frequency analysis on the blood pressure signal and the brain blood oxygen signal of each channel, a pair of near infrared transmitter and an absorption sensor form a channel, and different physiological source rates correspond to different feature frequency sections; 3, according to the time frequency analysis in the step 2, a wavelet coherence coefficient of each feature frequency section is obtained, and the wavelet coherence coefficient shows consistency of the blood oxygen signal and the blood pressure inside the feature frequency section. By means of brain blood oxygen and arterial pressure physiological signals, on the basis of wavelet coherence or wavelet phase coherence or effect connection analysis, the noninvasive dynamic brain function is easily evaluated.

The invention belongs to the field of radar technology and particularly relates to a radar target detection technology, which comprises the following steps: firstly, arranging Nt groups of radar-received signals subjected to matched filtering process in a two-dimensional array B in data space according to range r-time t: BtN-(i)=[dNrdN-(r-t) ellipsis d1]<T>, where i is not larger than Nt and not less than 1 and B, representing the radar-received signal at a time point ti; transforming coordinates of the BtN-(i) to a parametric space with intercept b-slope k; moving the array BtN-(i) to achieve such a mapping that each speed (i.e. slope) kj, kj is not larger than +kmax nad not less than - kmax: moving array PtN-(i) downwards by abs(kjti) units for ki larger than 0, removing data between d1 and dkN-(jti) and adding 0 in front of Dnr; and moving array BNt-(i) upwards by abs(kjti) units for ki less than 0, removing data between dkN-(jtN(i)+1) to dNR, and adding 0 behind d1 to obtain a two-dimensional array DtN-(i) in the parametric space; calculating sigmaDtN-(i) and detecting in a set threshold; and subjecting the target position detected in the parametric space to reverse coordinate transformation to obtain the motion trajectory of a radar target in the r-t data space within the radar period. The invention can greatly reduce the computation amount, thus improving the radar target detection speed and facilitating the realtime detection of the radar target.

The invention relates to a method and a device for detecting a polymer film ion selective electrode. The method comprises the following steps of: putting a nucleic acid aptamer and polycation into a detection pond, and inserting a polycation selective electrode into the detection pond to generate a comparison signal; adding the nucleic acid aptamer into the detection tank, reacting with standard solution of a substance to be detected, adding the polycation, and inserting the polycation selective electrode into the detection pond to generate standard signals of the standard solution of the substance to be detected at different concentrations; obtaining a standard curve according to the standard signals and the comparison signal; adding liquid to be detected into the detection pond, adding the nucleic acid aptamer, reacting with the liquid to be detected, adding the polycation in the ratio to conduct the signals, and inserting the polycation selective electrode into the detection pond to generate a sample signal; and acquiring a signal to be detected according to the sample signal and the comparison signal, and acquiring the concentration of the liquid to be detected by the reference of the standard curve. The method is wide in application range, high in generality, large in electrode response signals and obvious in potential change, so the method is a marking-free and immobilization-free method.

The invention relates to an integrated magnetic elasticity sensor, belonging to the technical field of micro electro mechanical systems. The integrated magnetic elasticity sensor comprises a glass substrate, a magnetic field excitation offset coil, a signal reception coil, a sensor support, a magnetic belt material and insulation material layers. The magnetic field excitation offset coil is located on the glass substrate; the signal reception coil is located above the magnetic field excitation offset coil; the sensor support is located above the signal reception coil; the insulation material layers are respectively located among the magnetic field excitation offset coil, the signal reception coil and the sensor support; and both ends of the magnetic belt material are fixed on the sensor support. The invention has the advantages of high processing precision and small size of the device, can eliminate background signals of the excitation signal in the reception coil by adopting an 8-shaped collection coil, realizes real-time monitoring of vibration signals and can realize the portable characteristic.

The invention discloses a fluid-solid interface wave based sediment concentration detection device and a detection method, and belongs to the technical field of ultrasonic detection and analysis. Fluid-solid Schotle waves are generated by a signal sending module at an excitation measurement side of an excitation signal module and are propagated along a bed, and fluid-solid Schotle wave signals are received by a signal receiving module; the received signals pass through a signal processing module, and then the average velocity of the Scholte waves is extracted and is processed by an algorithmmodule to obtain the average sediment concentration in a measurement range of the bottom of the detected river. The detection method provided by the invention has a large one-time detection range, and an average effect in a wave propagation range is detected by the fluid-solid Schotle waves because the sediment concentration of small regions is possibly different, accordingly, the overall macro detection and analysis are favorable; the method provided by the invention is favorable for real-time detection without sampling for re-detecting; and the relative amplitude of fluid-solid interface waves is large, so that the measurement accuracy of ultrasound can be relatively improved.

The invention discloses a space-time adaptive processing method suitable for MIMO airborne-radar non-stationary clutter suppression. In the method, a MIMO system radar is combined to form a virtual array and an antenna pitching dimension freedom degree, and a non-stationary clutter can be effectively suppressed. An emission antenna and a receiving antenna are arranged vertically so as to form a virtual plane array possessing orientation and a pitching freedom degree, and STAP is used to carry out clutter suppression. The method is characterized in that one uniform linear array which is placed horizontally and one uniform linear array which is placed vertically are used for emitting and receiving signals; each array element of the emission antenna emits an orthogonal signal, each array element of the receiving antenna carries out matching filtering processing, and receiving data after filtering is equivalent to vertical plane array receiving data; a typical STAP method is used to complete clutter suppression; and finally, CFAR detection is performed on processed data. By using the method, advantages of anti-radiation countering, anti-interference and the like of a MIMO system airborne radar are possessed, and effective suppression to the strong short-range non-stationary clutter can be realized. The method can be widely applied to an airborne early warning radar adopting a MIMO system and other phased array airborne PD radars.

The invention discloses a sheet extruding machine with a melt pressure control system. The sheet extruding machine comprises a machine body, a main engine, a metering pump, a filter screen and the melt pressure control system, wherein the main engine, the metering pump, the filter screen and the melt pressure control system are respectively arranged on the machine body. The sheet extruding machine is characterized in that the melt pressure control system comprises a pressure detection mechanism, a control device and a speed regulating mechanism, wherein the pressure detection mechanism is used for detecting at least one position melt pressure of the sheet extruding machine so as to send a pressure detection signal; the control device is used for receiving the pressure detection signal and process so as to send speed regulating control signals; the speed regulating mechanism is used for receiving at least one speed regulating control signal and controls the rotating speed of the corresponding drive motor. Compared with the prior art, the sheet extruding machine provided by the invention has the beneficial effects that the melt pressure control system is capable of detecting melt pressure in real time, the melt pressure is regulated and can keep the appropriate range all the time, thus the quality of a sheet manufactured by the sheet extruding machine is effectively guaranteed.

The invention discloses a submarine cable armoring wire crevice corrosion test device and an evaluation method. At present, a device and method capable of reasonably reflecting the crevice corrosion risk of the metal armoring wires of submarine cables and providing quantitative evaluation are urgently needed. The device of the invention comprises a seawater medium experiment box and a crevice corrosion clamp; the crevice corrosion clamp is arranged in the seawater medium experiment box; the seawater medium experiment box is used as a container for containing a solution to simulate a seawater corrosion environment; the crevice corrosion clamp is used as a main body for wire crevice corrosion simulation and is used for clamping wires and adjusting an artificial crevice between two wires; thecrevice corrosion clamp is a supporting seat shaped like a Chinese character ''ao''; and two supporting limiting holes are formed in vertical plates at two sides of the crevice corrosion clamp on a coaxial straight line respectively. According to the device of the invention, the crevice corrosion clamp can be adjusted, so that the size of the crevice can be adjusted; tensile stress is applied toa sample; and therefore, the working condition of the armoring wires can be simulated.

The invention relates to an air pressure blasting device used for simulating evaluation with a tunnel drill blasting method. The air pressure blasting device comprises a self-boosting liquid nitrogen container, a control panel and two blasting-pipe modules, two SMC high-pressure pressure switches and a control module are arranged in the control panel, the control module is connected with the SMC high-pressure pressure switches respectively through a circuit to control opening and closing of the SMC high-pressure pressure switches, the air outlet of the self-boosting liquid nitrogen container is connected with the SMC high-pressure pressure switches respectively through a high-pressure hose, the SMC high-pressure pressure switches are respectively communicated with the blasting-pipe modules through the high-pressure hose, and air blasting holes are formed in the blasting-pipe modules. The air pressure blasting device has the advantages of simpleness in structure and convenience in use, construction procedure of evaluation with the tunnel drill blasting method can be accurately simulated, simpleness in operation is achieved, safety and reliability in tunnel simulation test process is guaranteed, and the air pressure blasting device can be widely used in similar simulation test of various small-equivalent tunnel blasting excavation.

The invention discloses an agricultural planting soil real-time detection system. The system comprises a base, a lifting box, a data processing module, a miniature optical spectrum instrument and a PC; the left side of the top end surface of the base is vertically provided with a threaded rod and a guide rod; the threaded rod penetrates through the upper side wall and lower side wall of the rightend of the lifting box and is rotationally sleeved with a first gear disc through an external thread; the left side of the top end surface of the lifting box is provided with a servo motor; the top end of a transmission shaft is fixedly sleeved with a second gear disc located at the inner cavity of the lifting box; the left side of the bottom end of the lifting box is fixedly provided with a detection sleeve; the bottom end of the outer wall of the detection sleeve is radially provided with a detection head; the signal input port of the miniature optical spectral instrument is connected with the detection head through a wire; the transmission shaft extends to a position below the detection sleeve and is connected with a spiral drill bit; the PC comprises a calculation processing module; and the calculation processing module is connected with the data processing module through a communication module. With the agricultural planting soil real-time detection system of the invention adopted, soil layers of different depths in a planting area are detected in real time, so that related technicians can be facilitated to judge soil quality conditions.

The invention discloses a laser point cloud three-dimensional target detection model and method for a complex traffic scene, a three-dimensional encoder in the model is beneficial to the detection of long-distance targets and small targets, and sparse convolution and sub-manifold convolution can greatly improve the coding efficiency of voxel features. The residual structure of the two-dimensional encoder can keep more complete information, detection of a long-distance target and a small target is facilitated, meanwhile, the network is easier to optimize, feature extraction and receptive field expansion can be carried out on an original scale and a self-calibration scale through self-calibration convolution, more complete and rich features can be extracted. Useful feature expression is enhanced in the space direction and the channel direction through space attention and channel attention, and useless information is inhibited. The final detection precision of vehicles is 81.88%, the final detection precision of pedestrians is 47.82%, the final detection precision of riders is 69.81%, the average precision is 66.25%, the average precision is 9.9% higher than that of an existing VOXEL RCNN algorithm, 13.8 FPS is achieved on RTX 2080Ti display, and the detection precision and speed can meet the sensing requirements of intelligent vehicles in complex traffic environments.

The invention relates to a conductive polymer microneedle electrode used for biomolecular detection and a preparation method thereof. The conductive polymer microneedle electrode is an electrode- microneedle integrated electrode product, and consists of a polymer solid microneedle, an inert metal layer and a conductive polymer film fixing bioactive molecules. The conductive polymer film can be deposited on the polymer microneedle in an electrochemistry manner, and the collection of bioelectrical signals can be realized by using the microneedle to pierce the skin, so that the conductive polymermicroneedle electrode can have characteristics of efficient and painless. Bioactive components can be fixed in the conductive polymer film, so that specific recognition can be performed on to-be-detected biomolecules, and electrical signal sensitivity can be greatly enhanced. The conductive polymer microneedle electrode is simple in preparation technology and low in price; and conductive polymershave good biocompatibility and are insoluble in body after being pierced in the skin, and real-time detection and longtime continuous monitoring of the biomolecules can be realized.

The invention discloses an intelligent household air purification device and relates to the technical field of intelligent household appliances. Walking wheels are installed at the two ends of the bottom of a shell. A filter net mechanism is installed at the front end inside the shell. An air suction motor is installed on the right side of the filter net mechanism. A primary filter piece is installed on the right side of the air suction motor. An activated carbon adsorption frame is installed on the right side of the primary filter piece. A heating piece is installed on the right side of the activated carbon adsorption frame. A secondary filter piece is installed on the right side of the heating piece. A diffusion shell is installed at the right end of the shell. An atomizer is installed at the upper end of the shell. A rotary atomizer head is installed on the atomizer. A temperature detection sensor, a humidity detection sensor and a light brightness detection sensor are installed at the upper end of a shell of the atomizer. The intelligent household air purification device can achieve real-time detection conveniently, is easy and convenient to operate, saves time, is high in working efficiency and achieves intelligent control.

The invention discloses an anesthesia machine and a reminding device for the same. The anesthesia machine comprises an anesthesia machine body, a breathing circuit is mounted on one side of the anesthesia machine body, a breathing machine is mounted at the top of the breathing circuit, a CO absorbing tank is mounted at the bottom of the breathing circuit, a control panel and an anesthetic vaporizer are mounted on the anesthesia machine body, a plurality of indication lamps are mounted on one side of the control panel, a flow meter is mounted on one side of the anesthetic vaporizer, a display screen is mounted on the control panel, a controller is mounted in the control panel, a radiator is mounted on one side of the controller, a storage battery is mounted on the other side of the controller, an alarm is mounted on one side of the storage battery, a plurality of high-pressure air bottles are mounted in the anesthesia machine body and connected with an air conveying bottle through air pipes, and a pressure reducer is mounted on the air conveying bottle. The anesthesia machine is simple to use and convenient to install.

The invention discloses a visual detection method for aflatoxin B1. The visual detection method comprises the following steps: respectively linking sulfhydrylated aflatoxin B1 aptamer DNA1 and a complementary chain DNA2 of a sulfhydrylated aptamer to 13nm+/-2nm nanogold, so to obtain an aptamer-nanogold probe and a complementary chain-nanogold probe, and carrying out detection by virtue of a competition method, wherein a drone is bonded with the aptamer when a to-be-detected object contains the drone, the aptamer-nanogold probe and the complementary chain-nanogold probe are in a free state, nanogold is easily gathered under a high salt concentration condition, the color of the nanogold is changed from red to blue, when the to-be-detected object does not contain the drone, the nanogold is not gathered under the high salt concentration condition, and the color of the nanogold is still red and is gradually changed from red to blue along the increase of the concentration of the drone; anddetecting an ultraviolet-visible spectrum of the solution at 200nm-800nm, so as to realize the quantitative detection of aflatoxin B1 in the to-be-detected object.