950results about How to "Implement detection" patented technology

A method for determining parameter of atmospheric environment includes using laser radar determining system to receive backward scattering light of atmosphere, splitting received light to be various lights required by laser radar, carrying out analysis and treatment of data as per set program after photoelectric detection for realizing measurement on atmospheric environmental parameters such as temperature, steam density, airosol extinction coefficient, scattering coefficient, airosol optical thickness, visibility and depolarization ratio of non-spherical particle backward scattering light.

The invention discloses a graphene terahertz wave detector. The graphene terahertz wave detector comprises a graphene field effect transistor and an antenna which can be effectively coupled to terahertz waves. The antenna is in integrated arrangement with the graphene field effect transistor yet is completely independent from the source electrode and the drain electrode of the graphene field effect transistor. According to the invention, through combination between a top grid and a back grid, the transport property of a graphene two-dimensional electron gas is effectively regulated and controlled, and accordingly, the terahertz waves are detected. The two sides of the top grid of the graphene field effect transistor are integrated with a plane antenna which is independent from the source electrode and the drain electrode and can be highly efficiently coupled to the terahertz waves, such that terahertz wave signals are coupled to a grid electrode in the form of capacitance, and the response of the graphene detector to terahertz radiation can be effectively enhanced. The detector can generate photoelectric currents or open-circuit voltages under radiation of the terahertz waves so as to realize room-temperature, high-speed, high-efficiency, high-sensitivity and low-noise detection.

The present invention is one kind of micro robot and its in vitro guiding system. Inside the robot, there are permanent magnet, micromotor, RF receiver, miniature battery, tail rotating mechanism, tail rotating rod and high elasticity sealing membrane between the rotating rod and the robot body. The in vitro guiding and controlling system includes an imaging subsystem for scanning the detected area, a computerized control subsystem for receiving the original image data and performing image reconstitution, a magnetically locating subsystem for locating the permanent magnet inside the robot and feeding the original location data to the computerized control subsystem, and a magnetically guiding subsystem for receiving the guide controlling information from the computerized control subsystem and performing the guide control on the micro robot.

The invention discloses a tunnel construction large-scale integrated geophysics advanced detection model test device, which comprises tunnel surrounding rock, a main tunnel model, a model test case, a water-containing geological structure device, a numerical control automation construction device and a main control chamber. The model test device is a large-scale integral geophysics advanced detection model test device meeting the detection of a seismic wave method, an electromagnetic method and a direct current power method, the geophysics advanced detection model test device can be utilized for studying the geophysics response characteristics of the water-containing geological structure device in front of a tunnel face, in addition, various geophysics advanced detection forward and inversion methods of the water-containing geological structure device are verified, the relationship between some geophysics detection method results and the water inflow is studied, and the test foundation is laid for the water inflow prediction and the advanced prediction of the water-containing geological construction device in actual engineering.

The invention relates to a burning and explosion accident sensing and risk predicting early-warning intelligent fire fighting helmet implementing method. A fire fighting helmet, a long-distance combustible gas detector, a thermal imaging camera module, a head-mounted near-eye display module, a positioning instrument, a data communication and transmission module, an embedded core board, an earphone, a base station, and a fire fighting command centre are involved. According to the burning and explosion accident sensing and risk predicting early-warning intelligent fire fighting helmet implementing method, the real-time position of a fireman in a building can be displayed for the fireman by combining a fireman positioning technology, a building information model and real scene thermal image information, and projecting and displaying information through the head-mounted near-eye display module, so that the environment burning and explosion dangerousness and risk thereof are predicted in real time. When the fireman enters an unknown environmental place, a potential fire disaster explosion accident risk can be effectively predicted quickly; quick sensing and information communication ofthe fireman to a fire disaster accident scene can be realized through an advanced video and thermal imaging technology and an indoor positioning and communication transmission technology, so that thefire fighting rescuing scientific level and the capacity of the fireman are improved.

The invention provides a detection system for detecting targets around a vehicle and application of the detection system. The detection system includes a vehicle front forward direction sensor (1), a vehicle roof forward direction sensor (2), a right front sensor (3), a left front sensor (4), a right rear sensor (5), a left rear sensor (6), a rear sensor (7), a left side sensor (8), a right side sensor (9) and target selection modules (10), wherein the target selection modules (10) include a forward direction target selection module (11) and a side direction and backward direction target selection module (12), wherein the forward direction target selection module is configured to select targets at least four positions in front of the vehicle as vehicle front side tracking targets based on received target motion information, and the side direction and backward direction target selection module is configured to select targets at the side direction and backward direction of the vehicle as vehicle side direction and backward direction tracking targets according to received target motion information.

The invention provides a terahertz photoelectric detector. The terahertz photoelectric detector at least comprises a substrate with the surface covered with a medium layer, single-layer graphene formed on the surface of the medium layer, first metal electrodes arranged at the two ends of the single-layer graphene and a second metal electrode formed on the back face of the substrate. A current source for measuring the voltage change is arranged between the first metal electrodes, and a voltage source for providing the bias voltage is arranged between the second metal electrode and the first metal electrode at one end of the single-layer graphene. The photoconductive characteristic peak position of the single-layer graphene is modulated by adjusting the bias voltage, and therefore the terahertz frequency is detected.

An infrared thermal imaging type laser gas leak detection method and apparatus relates to the optoelectronic gas detection technology in the information technology field. The apparatus is composed of an infrared thermal imaging module, a laser gas concentration detection module, an image display module, a key circuit board, a power module, an alarm module, a laser reflection plate and a central data storage unit. Further provided is a field leak point concentration and thermal imaging data collection method applied with the system. The infrared thermal imaging type laser gas leak detection method and apparatus can obtain field monitor concentration and leak point thermal imaging so as to realize the synchronous field environment gas concentration and thermal imaging data collection.

The invention provides a polarization-maintaining flat optical fiber coupling ball microscale sensor based on polarization state detection and belongs to the technology of manufacturing and measurement of precise instruments. The polarization-maintaining flat optical fiber coupling ball microscale sensor comprises a laser, a semi-transparent semi-reflective prism, a quarter lambda wave plate, a probe, a polarization state detection device A, a polarization state detection device B and a computer, wherein the probe is composed of a flat package layer polarization-maintaining optical fiber and a coupling ball, and the laser, the semi-transparent semi-reflective prism, the quarter lambda wave plate and the probe are arranged in sequence. Emergent light of the laser is reflected and transmitted by the semi-transparent semi-reflective prism, and reflected light enters the polarization state detection device A; transmission light enters the probe, reverse transmission of a transmission light beam is achieved after the transmission light beam passes through the coupling ball, the transmission light exits from the probe, and emergent light passes through the quarter lambda wave plate, is reflected by the semi-transparent semi-reflective prism again and then enters the polarization state detection device B. When the difference value between the polarization state detected by the polarization state detection device B and the polarization state detected by the polarization state detection device A is changed, it can be determined that the probe is in contact with a detected hole. The polarization-maintaining flat optical fiber coupling ball microscale sensor is high in precision and high in speed.

The invention discloses an early fire smoke detecting method with interference particle recognition capability. A transmitter and two receivers are arranged in a detector, the transmitter can emit twodifferent wavelengths of light, and the two receivers are used to collect two kinds of scattered light power at different angles; the scattered light power at two different angles under certain wavelength conditions can be simultaneously measured, thereby obtaining the asymmetry ratio by calculating the ratio. By letting the transmitter alternately emit beams of different wavelengths in the pulseform, the forward-backscattered optical power signals at different wavelengths can be obtained, as well as their changes over time. According to the method, the asymmetry ratio of different wavelength conditions is utilized to distinguish fire smoke particles from common interference particles; combined with the asymmetry ratio and its fluctuation characteristics, the detection of early fire smoke particles can be achieved; a signal strength threshold is not used to determine whether an alarm should be mode. Therefore, the detection method can respond to the fire black and white smoke particles in a balanced manner.

The invention discloses a non-contact static detection device, which comprises a static sensor, an electronic switch and an electric signal processing unit, wherein the static sensor comprises a sensing electrode and a coupling electrode; the sensing electrode is a metal static signal receiving surface; the coupling electrode is a metal electrode; the sensing electrode and the coupling electrode construct a capacitor of fixed capacitance; the sensing electrode is electrically connected with the electronic switch; and the electric signal processing unit is used for grounding or suspending the sensing electrode alternatively by controlling the electronic switch, and is also used for performing subsequent processing on an alternating signal acquired from the coupling electrode to convert the processed alternating signal into an electric field value. The non-contact static detection device has the characteristics of no mechanical part, high coupling capacitance variation quantity, high sensitivity, flexible sensor design and easiness in realizing; and by selecting the static sensor, static electricity or weak static electricity in tiny regions can be measured in real time and absolutely.

A conjugated bi-pass lighting confocal microscopic device of a fluorescent reflecting mirror belongs to an optical micro measurement technology. A collimation beam expander and a beam splitter are sequentially arranged on a direct light path of a laser, a focusing object lens and a three-dimensional micromovement object stage are arranged on the reflected light path of the light splitter, a narrow-band filter and a converging object lens are arranged on the transmission light path of the beam splitter, transmission optical fibers transmit the converging light of the converging object lens to a photodetector, an ellipsoidal reflector is also arranged on the reflected light path of the beam splitter, the perifocus of the ellipsoidal reflector is positioned a sample surface which is put on the three-dimensional micromovement object stage, and the fluorescent reflecting mirror is arranged at the apofocus of the ellipsoidal reflector. The microscopic device prevents the interference which is generated by the mixed light-wave superposing which is caused by primary lighting and secondary lighting of bi-pass lighting, and has high signal-to-noise ratio and axial resolution.

The invention discloses an independent photoelectric smoke detection alarm which comprises an alarm base, an alarm upper cover and a circuit board. The alarm upper cover covers the alarm base to form a photoelectric darkroom, and only smoke and less light are allowed to enter the photoelectric darkroom. A space is surrounded by a lower recessed cavity in the alarm base and an upper recessed cavity in the alarm upper cover to form the photoelectric darkroom. The circuit board is arranged in the lower recessed cavity. A signal processing module, an infrared transceiver module and a wireless communication module are integrated on the circuit board. The infrared transceiver module comprises an infrared light emitting diode and an infrared receiving diode. A voice alarm module and a display module are built in the alarm upper cover. A test button is arranged on the alarm upper cover. A power supply module is arranged in the alarm base. The independent photoelectric smoke detection alarm provided by the invention has the advantages of strong anti-interference ability, sensitive detection, simple structure, reasonable design, accurate detection and long service life. A 3-volt lithium manganese battery with the service life of 10 years is built in the independent photoelectric smoke detection alarm.

The invention discloses a networking navigation radar target tracking system based on data fusion. The system comprises at least one radar front end, at least one radar terminal and an Ethernet. The radar front end and the radar terminal are in bidirectional data transmission through the Ethernet. The radar front end comprises an antenna, a transceiver, a data acquisition module, a signal preprocessor module and a control command processing module. The radar terminal comprises a display unit, a signal processing unit and a control unit. The transceiver generates radio-frequency pulses which are radiated to the space through an antenna. The system belongs to a trace point serial processing centralized data fusion structure, has the features of high fusion precision and small system time delay, and meanwhile, has the advantages of eliminating detection blind areas, improving detection probability and improving tracking performance. After the terminal carries out data fusion and comprehensive optimization processing on the data of the plurality of front ends, the problem of blind area of the single radar due to antenna erection location can be effectively solved, marine target detection and tracking accuracy performance is improved, and navigation safety is guaranteed.

The invention relates to a detection device and especially relates to an in-situ detection device for occurrence of hydrates in deposits. The CT in-situ detection device for microcosmic occurrence of hydrates in deposits comprises a pressure control system, a semiconductor temperature control system, an autoclave and an X-CT scanning system. The pressure control system is communicated with the autoclave. The semiconductor temperature control system is arranged at the bottom of the autoclave. The X-CT scanning system is arranged at two sides of the autoclave. The device achieves real-time detection of distribution of deposit particles, water, hydrates and free gas during hydrate formation/decomposition process.

The invention discloses a dual frequency band dual polarization spaceborne cloud-rain measurement radar system which is mainly composed of an antenna subsystem, a radio frequency subsystem, a digitalsubsystem, a monitoring subsystem and a power supply subsystem. The antenna subsystem adopts a parabolic reflector/microstrip reflective array antenna feeder system, and comprises a parabolic reflector/microstrip reflective array antenna, a Ka frequency band active phased array feed source, a W frequency band beam waveguide feed system and a Ka/W frequency band shared parabolic reflector/microstrip reflective array antenna. The radio frequency subsystem is connected with the Ka frequency band active phased array feed source, the W frequency band beam waveguide feed system and the digital subsystem. The digital subsystem is connected with a terminal. The system provided by the invention has the advantages that the three-dimensional vertical structure information of clouds and precipitationin the field of view can be quantitatively acquired; and the acquired global cloud-rain three-dimensional structure data can be applied to three-dimensional high-precision inversion of atmospheric clouds and precipitation, can be applied to global extreme weather monitoring and forecasting, and can be applied to atmospheric science and numerical simulation studies.

The invention discloses a phase conjugate reflection bi-pass lighting confocal microscopic device, belonging to an optics measuring microtechnique. A collimation beam expander and a spectroscope are configured on a laser direct light path in sequence; a focusing objective lens and a three-dimensional micrometric displacement objective table are configured on a spectroscope reflecting light path; a collecting objective lens is configured on a spectroscope transmission light path; a collecting objective lens converging light is conducted to a photoelectric detector through conduction optical fibers; an ellipsoid reflecting lens is also configured on the spectroscope reflecting light path; a near focus of the ellipsoid reflecting lens is located on a surface of a sample put on the three-dimensional micrometric displacement objective table; and a phase conjugate reflecting lens is configured at a remote focus of the ellipsoid reflecting lens. According to the device, bi-pass lighting to a large curvature convex surface is carried out by adopting a characteristic that a reflection ray as a phase conjugate light wave of an incidence light of the phase conjugate reflecting lens can go back along an original way in combination with a characteristic that the ellipsoid reflecting lens is provided with a pair of isoplanatic image formation conjugate focuses, so that the device has a measurement ability of the large curvature convex surface and a characteristic of a high axial resolution force.

The invention relates to a geological radar chromatographic detection method for a disaster source in a mine recovery area, belonging to the technical field of geophysical exploration. The method comprises the steps of determining positions of transmitting points and receiving points; conducting geological radar chromatographic detection on a selected detection profile; conducting mesh generation on the profile; constructing an inversion equation set of wave velocity chromatography; determining the wave velocity distribution of the detection profile; and drawing a contour map of detection profile wave velocity distribution and recognizing the spatial position and the characteristic attribute of the disaster source. The geological radar chromatographic detection method for the disaster source in the mine recovery area realizes the quick, accurate, nondestructive detection on disaster source information in modernized mine recovery areas and plays a role in guiding underground safe mining.