123results about How to "Solve the high detection cost" patented technology

The invention discloses a tunnel heading-along earthquake advanced detection device taking a heading machine as an earthquake focus and a method thereof. The device comprises an earthquake detector, an earthquake focus signal receiving sensor and an earthquake wave receiving detector array, wherein the earthquake focus signal receiving sensor is arranged on the arm of the heading machine; and the earthquake wave receiving detector array is arranged on a tunnel wall. The method comprises the following steps of: continuously acquiring earthquake wave signals through a three-component sensor which is coupled on the arm of the heading machine and a three-component sensor array which is arranged on tunnel surrounding rock by taking vibration generated by cutting rock with a cutting head during working of the heading machine as a hypocenter; and recording the acquired signals for processing, and forecasting the position and structural detail of a geological anomalous body in front of a tunnel by analyzing received wave field imaging geometrical characteristics. Due to the adoption of the device and the method, the problem of oneness of an earthquake wave field of a pure explosive source in near flat ground layer tunnel advanced detection can be solved without influencing the tunnel heading work; the device has high working efficiency and high detection accuracy, and is free from safety risks; and accurate positioning of a geometrical anomalous body can be realized.

The invention relates to a wearable flexible stress sensor and a preparation method and application thereof. Firstly, functional ink suitable for screen printing is prepared, and is printed on a wearable substrate through a screen printing method, and the stress sensor of a desired specification is produced. The stress sensor is used for monitoring physical deformation of stretching, bending, touching and the like from small ranges to large ranges, and has multiple application in the electronic skin fields and the biomedical application fields of human skins, expressions, pulses, heartbeats and the like, the human-computer interaction fields and the fields of virtual reality, entertainment technology and the like. The flexible stress sensor of the invention has the following advantages that the sensor has excellent stretching elasticity, and stretching strain can reach 100%; sensitivity is extremely high, and a sensitivity parameter (Gauge Factor) can be up to 8000 or more; linear relationships of working curves are excellent, stretching repeatability is good, and a stretching cycle lag is small; and a preparation process is simple, costs are low, massive integrated-device preparation is suitable, and application prospects are wide.

The invention discloses a method for detecting spherical boulders in shield construction to achieve the technical purpose of improving the capability of detecting the spherical boulders in the shield district. The method comprises the step of collecting geological radar echo signals in the drilling depth direction through a well geological radar, the step of primarily defining the dimensional orientation where the spherical boulders probably exist, the step of collecting potential differences and currents between two drill holes to obtain the true resistivity of a stratum between the two holes, the step of drawing the true resistivity into a contour map to define the sizes and the distribution situation of the spherical boulders in the stratum between the two holes. Compared with the prior art, the well geological radar and the hole crossing ultrahigh precision electrical method are utilized, the spherical boulders within the shield tunnel range is detected, the distribution of the spherical boulders within the tunnel range can be detected to the maximum degree, the number of the drill holes can be reduced, the detecting cost is small, meanwhile, the probability of finding the spherical boulders in the complex stratum shield district is improved, and the smooth advancing of a shield tunneling machine is guaranteed.

The embodiment of the invention relates to a method for positioning an underground pipeline and a system thereof. The method comprises the following steps of: transmitting an electromagnetic wave signal to a wireless radio-frequency positioning marker containing an ID code; receiving a wireless signal which is fed back by the wireless radio-frequency positioning marker and contains the ID code and the underground pipeline information; carrying out checking treatment on the ID code and the underground pipeline information; determining an embedded place name of the wireless radio-frequency positioning marker according to the ID code; determining the embedded concrete position of the pipeline; and determining the trend of the pipeline according to the orientation information of the adjacent wireless radio-frequency positioning marker. The embodiment of the invention also provides a positioning system of the underground pipeline. The positioning method and the positioning system in the embodiment of the invention can realize the accurate positioning of the underground pipeline, find fault points as soon as possible when faults happen, reduce the digging area and the compensation cost,furthermore help maintainers establish the records of maintaining in normal times and overhauling the underground pipeline.

The invention relates to high-speed and long-distance fish shoal detection robot and a detection method. The detection robot comprises an external remote controller and a body, wherein the body consists of a casing, a power system, a snorkeling system, a detection sensor and a control communication system. The detection robot is powered by a gasoline engine on the water surface to sail to a fish shoal detection point at high speed, and then is powered by a storage battery to detect the density, the varieties and the quantity of the fish shoal after diving underwater by using a fish shoal detection sonar and a camera and transmit the detection result to an operator after upwards floating. The invention can accurately reach a plurality of designated positions for detecting waters at high speed and has the advantages of long sailing distance, less influence by the weather, capability of reducing the detection cost and improvement of real-time property and safety.

The invention relates to an electric field restraining method coal safety type fully-mechanized excavating onboard geological structure detection system and a method thereof. The fully-mechanized excavating onboard geological structure detection system is used for detecting the hidden geological structure in front of a tunneling surface under a coal mine and is composed of a coal road fully-mechanized excavating ahead detector, an emission electrode, a restraining electrode and a grounding electrode. Double-frequency modulating wave current is emitted to an area to be detected through the emission electrode and the restraining electrode so as to generate induced polarization effect in coal rock. Polarization information is collected and processed by a receiving part of the detector, apparent resistivity and visual width frequency, namely power feeding equipment (PFE) values, can be automatically calculated and converted into coordinate graphs for display, accordingly, the ahead tunneling geological structure can be judged, and the abnormal positions can be determined by angle scanning and depth scanning. Detection data can be automatically stored and be further analyzed through special data interpretation software, the ahead tunneling geological structure can be obtained, and advanced detection of the fully-mechanized excavating surface of a coal road can be finished. The electric field restraining method coal safety type fully-mechanized excavating onboard geological structure detection system and the method thereof are in accordance with coal safety verification standards, can be in cooperative work with a heading machine and is fast in detection, high in accuracy, good in instantaneity and convenient to operate.

The invention provides an unmanned ship perception fusion algorithm based on deep learning, and the algorithm comprises the steps: 1, carrying out target detection of a single-frame image collected bya camera, and obtaining machine vision data; 2, filtering and clustering the data input by the laser radar, and clustering discrete points into target information to obtain radar data; 3, performingdata association on the radar data and the machine vision data; after the step 1 and the step 2 respectively process the data of the camera and the radar, matching observation targets of the radar data and the machine vision data, establishing a data association model of the radar data and the machine vision data to obtain an association matrix of the radar and the vision measurement target, and screening out a target with a relatively high association degree through the association matrix of the radar and the vision measurement target so as to realize sensing of the target. According to the method, the advantages of the radar sensor and the visual sensor can be fused, enough target information is provided for unmanned ship environment perception, and the method has certain robustness andcan adapt to certain interference.

The invention relates to a technique for detecting temperature by using identical fiber grating as a sensor, and discloses a temperature detection system which has relatively low cost and can perform space orientation, aiming at overcoming the defect that the prior temperature detection system can not perform space orientation. The fiber bragg grating temperature detection system comprises a laser, a coupler, a circulator, a sensing network formed by FBGs and a sensing signal processing module. The sensing laser sent by the laser after being modulated modulation is divided into n paths to enter the sensing network through the coupler. In each path of sensing network, the sensing laser enters into the FBGs through the circulator. Back scattering light enters into the sensing signal processing module through the circulator. All FBGs in the sensing network have substantially identical central reflection wavelength. The invention is used for temperature detection alarm, is particularly suitable for denser quasi-distributed detection of temperature, saves bandwidth source, does not need complex demodulating technology, and reduces the detection cost.

The invention discloses a comprehensive inspection device for measuring the position of a crankshaft hole. The comprehensive inspection device comprises a crankshaft output end detecting and supporting part, a crankshaft small-head end detecting and supporting part, a prepositioning support, a crankshaft first connecting rod shaft journal positioning mechanism and a bottom plate, wherein the crankshaft output end detecting and supporting part is matched with a crankshaft output end; the crankshaft small-head end detecting and supporting part is matched with a crankshaft small-head end; the prepositioning support and the crankshaft first connecting rod shaft journal positioning mechanism is arranged between the crankshaft output end detecting and supporting part and the crankshaft small-head end detecting and supporting part; and the crankshaft output end detecting and supporting part, the crankshaft small-head end detecting and supporting part, the prepositioning support and the crankshaft first connecting rod shaft journal positioning mechanism are fixedly arranged on the bottom plate. The comprehensive inspection device has the characteristics of high universality and operation convenience, the working efficiency of detecting the position of the crankshaft hole can be obviously improved, the detection cost is reduced, and high economic benefits are brought to an enterprise.

The invention discloses a method for detecting dam seepage through combination of a surface nuclear magnetic resonance method and a high-density resistivity method Firstly, a suspected resistivity abnormal area is quickly analyzed and determined through the high-density resistivity method. Then key detection and abnormal region identification are performed on the suspected resistivity abnormal area through the surface nuclear magnetic resonance method. Finally a dam seepage channel is determined through integrating the detecting results of the surface nuclear magnetic resonance method and thehigh-density resistivity method, thereby diagnosing and determining a seepage hidden trouble range and a degree. According to the method, the number of coil turns can be set for aiming at different conditions for improving a signal-to-noise ratio, thereby reducing interference to a surface nuclear magnetic resonance method detecting signal, and remarkably improving precision of detecting information. Furthermore, the surface nuclear magnetic resonance method and the high-density resistivity method have low comprehensive detecting cost and can verify each other, thereby supplying a new approachfor settling a problem of non-uniqueness in interpreting a resistivity method detecting accomplishment.

The invention provides a road surface detection system and a vehicle. The system comprises an anti-collision radar system and a control system that are arranged on the vehicle; the anti-collision radar system is used for measuring data of distance between a chassis of the vehicle and a road surface and sending the data of distance to the control system; the control system is used for determining that the road surface is a bumpy road surface when change of the data of distance exceeds a preset distance change value. The road surface detection system and vehicle provided in the invention can detect bumpiness condition of the road surface on which the vehicle currently travels via the anti-collision radar system and the control system built in the vehicle, and detection cost is lowered.

The invention provides a method for detecting a coal field fire district distribution range, which is applicable to detection of coal field fire distribution ranges and development degree. According to the characteristic that coal field fire often happens in a coal petrography scattering area, a geological radar and a transient electromagnetic instrument detect electromagnetic wave amplitudes and secondary induction electromagnetic fields in a detection area, and a distribution range of the coal petrography scattering area in the detection area is defined. Gas measurement drill hole is constructed in the defined coal petrography scattering area in the detection area, gas in the drill hole is sampled, and compositions and concentrations of carbon monoxide, acetylene and ethylene in a gas sample is analyzed. A gas concentration distribution contour map is developed according to analysis results of the gas sample, the area with low concentration is the edge of the fire district, and the area with high concentration is the area with serious fire district development degree. By means of pre-detection of the coal petrography scattering area, pertinence of the fire district detection drill hole is improved, construction amount of the detection drill hole is reduced, and detection cost is saved. The method for detecting the coal field fire district distribution range is simple and high in detection accuracy, and has wide practical applicability in the field of detection of the coal field fire district.

The invention discloses a method and an apparatus for detecting a Karst cave by resonance wave imaging. In the invention, a sound wave emitter is used as a vibration source to send excitation waves around the Karst cave, and unknown Karst caves around the detection points are detected according to the resonance waves received by a receiver in the light of resonance of earthquake wave or sound wave excitated by the excitation waves underground with adjacent Karst caves. The method provided by the invention makes full use of exploration holes, is agile in working mode, simple in requirement on instruments and equipment, remarkable in abnormalities, convenient to explain information and has remarkable effect, is an effective method to explore the Karst caves, and gives full play to task performance of the engineering seismograph and the sound wave instrument. The device used by the invention has a simple structure, and is easy to install on site, intuitionistic to identify and explain abnormalities, high in work efficiency, and wide in application scope. The maximum detecting range by the method reaches to more than ten meters around the holes. The invention can be widely applied to Karst exploration in the fields of urban construction, water conservancy and hydropower, and highway and railway and the like.

The invention provides a method for detecting an initial position of a planar motor. The method comprises the following steps: using current ring closed-loop control and position ring PID (proportion integration differentiation) closed-loop control via the planar motor based on a position measuring sensor of the planar motor body; using noise motivation to detect fine initial positions of relative stators of each three-phase coil assembly of the planar motor rotator in sequence so as to complete the detection for the initial position of the planar motor; realizing multi-freedom precision motion of a photo-etching machine workpiece table without additional other sensors and corresponding signal processing electronic circuits, thereby simplifying the detecting process and reducing the detecting cost.

The invention provides a detection system based on ground and underground space stereoscopic transient electromagnetic data collection. The system comprises a transient electromagnetic transmitter, a transient electromagnetic transmitting loop, a transient electromagnetic receiver, a ground surface series receiving probe, a vertical hole series receiving probe, a first mining level series receiving probe and a second mining level series receiving probe. The transient electromagnetic transmitter and the transient electromagnetic transmitting loop are arranged on a ground surface and are just above a plan-to-detect target, the vertical hole series receiving probe is arranged in a vertical hole, the first mining level series receiving probe is arranged in a first mining level, and the second mining level series receiving probe is arranged in a second mining level. According to the detection system, the detection advantages of a transient electromagnetic method can be fully played, high precision, ground and underground, space and stereoscopic range transient electromagnetic data can be obtained, a geological anomalous body in a detection range can be accurately determined, and reliable geological data is provided for the safety production of a coal mine.

The invention discloses a novel coronavirus particle quantitative detection method based on nano plasma resonance. The novel coronavirus particle quantitative detection method comprises the followingsteps that plasma photon resonance coupling effect equipment and nano gold particles are prepared for amplifying a detection signal; the surface of a nano plasma resonance sensing chip is modified with an SARS-COV-2 capture antibody, and gold nanoparticles are labeled with an SARS-COV-2 labeled antibody; SARS-CoV-2 virus particle samples are added with different titers into the labeled nano gold particles; a mixed solution is added into the pore plate to be detected, and capture of the SARS-CoV-2 virus particle and labeled gold nanoparticle compound is completed. The method is advantaged in that by detecting the change curve of the absorbance difference value along with time under the specific wavelength before and after sample adding, SARS-CoV-2 virus particle quantitative detection is achieved.

The invention discloses an estimation method for engineering riprap amount. The estimation method for the engineering riprap amount is based on the geological radar detection technology and the CAD software operation technology and mainly comprises the operation steps of determining a dielectric constant; carrying out geological radar detection; interpreting a geological radar result map; carrying out CAD processing on the geological radar result map; checking the sectional area of riprap; and calculating the volume of the riprap. According to the invention, the riprap amount can be accurately estimated without damage and with low cost and high efficiency, and the whole calculation process is simple and easy to understand. The estimation method can be widely used for detection work of practical engineering such as roadbeds, cofferdams and bulwarks.

The embodiment of the invention discloses an aerostat-based integrated occultation and reflection detection integrated device and method. The device comprises an integrated antenna array, a GNSS direct antenna, a radio frequency signal processing circuit, a digital signal processing circuit, an anti-fuse FPGA and a FLASH memory. The integrated antenna array and the GNSS direct antenna are connected with the radio frequency signal processing circuit. The radio frequency signal processing circuit is connected with the digital signal processing circuit. The digital signal processing circuit is connected with the anti-fuse FPGA. The anti-fuse FPGA is connected with the FLASH memory. According to the technical scheme, the effects of reducing detection cost, reducing device volume, configurableresources and sharing can be realized.

The invention discloses a method, device and system for detecting road surface conditions through a depth camera, and the method comprises the steps: obtaining the position data and distance data of all objects in a view field through the depth camera installed on a robot; generating a depth image according to the position data and distance data of all objects in the view field; extracting road surface condition data from the depth image, wherein the road surface condition data comprises road surface conditions and position data of a road surface. The method can employ the depth image for scanning all objects in the view field to obtain the position data and distance data of all objects in the view field, achieves the generation of the depth image, achieves the recognition of a flat road surface, an uneven road surface or a road surface with barriers through an algorithm, achieves the reasonable evaluation of the road surface conditions, so as to provide a basis for judging whether therobot meets with an uncrossable uneven road surface and needs to avoid the uncrossable uneven road surface or stops or not. Compared with a laser range-finding single-point measurement mode, the method can achieve the more complete scanning of the road surface conditions, can achieve the timely finding of the unevenness of the road surface and the barrier conditions of the road surface, and is lower in detection cost.

The invention discloses a 3D rapid high-resolution tunnel construction advanced intelligent forecasting method. An observation method that excites seismic waves on the tunnel face and receives multiple coverage imaging of reflection wave signals on the tunnel face in a 3D mode is employed, high-sensitivity broadband sensors can be quickly combined to arrange a 3D reception system based on the shape and a construction mode of the tunnel face, a broadband seismic source is further utilized at the tunnel face to carry out rapid and regular automatic excitation without causing damage to the tunnelface, construction is simple, repeatability is strong, and the risk is low; and secondly, excitation and data acquisition at different construction processes of the tunnel are carried out, in combination with physical properties of surrounding rocks (such as surrounding rock density, the Poisson's ratio, etc.) acquired during tunnel construction, a tunnel database is established, through comparing the data at different times, high-resolution detection of the geological information in front of the tunnel face can be carried out, and geological disasters within 500 meters ahead of the tunnel face are detected.

The invention discloses a 3D vehicle detection method based on key point regression. According to the method, 3D detection can be carried out on a front vehicle target in a driving scene so as to obtain three-dimensional information of a vehicle target; compared with a 2D vehicle target detection technology, the method has the advantages that richer scene information and higher-precision basic data can be provided for an automatic driving vehicle decision-making system, the decision-making system is helped to make more accurate judgment, and the safety of the automatic driving vehicle is improved. Therefore, the method has a wide application prospect. Compared with other 3D vehicle detection methods, the method has the advantages that pixel depth, radar and other data are not needed, onlycommon RGB image information acquired by the monocular vision camera is needed, and the detection result is reliable.

The invention discloses a karst cave internal structure detection method and device based on an unmanned aerial vehicle. The invention aims to provide a detection method and a detection device which are simple in structure, low in cost and easy to operate. The detection method comprises the steps of detecting each depth in each complex region in the karst cave by using the unmanned aerial vehicleas a carrier to obtain the coordinates of the set points of the cave wall, and further obtaining a three-dimensional map of the internal structure of the karst cave. In addition, the invention furtherprovides a karst cave internal structure detection device based on the detection method.

The invention discloses an IPv6 alias prefix detection method based on fragmentation fingerprints. The IPv6 alias prefix detection method comprises the following steps: generating a plurality of pseudo-random addresses in a target prefix space; judging that the target prefix is an active prefix; and judging that the plurality of pseudo-random addresses and the active prefixes are configured on thesame host so as to identify that the active prefixes are alias prefixes. According to the detection method, the network host can be effectively discovered, the network detection cost is reduced, andmore effective data support is provided for network measurement, network surveying and mapping and security research.

The invention relates to a method for economically, quickly and accurately detecting underground space distribution characteristics of a landfill pond. The method comprises the following steps: collecting and analyzing data, carrying out field survey, and carrying out geophysical exploration in a region with a resistivity difference; scanning the research area from the surface to delineate the range boundary of the landfill pond; depicting the position of the landfill pond and the underground space distribution from the line; carrying out drilling verification on the determined results of the plane position and the underground space distribution range of the landfill pond from points; and displaying the plane position and the underground space distribution range of the landfill pond from the body. According to the method for economically, quickly and accurately detecting the underground space distribution characteristics of the landfill pond, the equivalent anti-magnetic flux transient electromagnetic method, a geological radar, a high-density resistivity method, an electromagnetic induction method and drilling are applied to accurately detecting the plane position boundary and the space distribution range of the landfill pond for the first time, and rapid and accurate detection of the landfill pond is achieved; and detection cost is low, and popularization and application can be realized.

The invention discloses a detector in a hole. The detector comprises a detector body; a pushing device, comprising a push rod driving device and a push rod component connected with the push rod driving device, wherein the push rod driving device is connected with the detector body, and the push rod driving device is used for driving the push rod component to press against the hole wall of a drill hole, so as to position the detector body into the drill hole; a force detection device, connected with a preset detection device of the push rod component, and used for detecting the acting force on the push rod component at the preset detection position; and a control device, electrically connected with the push rod driving device and the force detection device, and used for controlling the operation of the push rod driving device and receiving the force detection information of the force detection device. The detector in the hole can synchronously detect and adjust the pushing device, ensure the tight coupling of the detector and the surrounding rock of the drill hole, has the characteristics of being simple in structure, convenient to operate and reliable in coupling, and is also convenient to recycle for reuse.

The invention discloses a light control combined SERS method based on a micro-nano structure substrate. The method comprises the following steps of firstly, slots with different morphologies and sizesare formed in the surface of a silicon wafer or a graphite flake; , then placing a substrate with a micro-nano structure in the gold or silver nano sol, gathering highly gathered laser beams in a slot of a micro-nano silicon-based substrate, gathering gold nano particles in the slot to form a gold nano particle aggregate, and thus obtaining the high-sensitivity SERS substrate. By utilizing the characteristic that the optical radiation pressure is greater than the gradient force, the SERS detection sensitivity is improved; the light beam for controlling the gold nanoparticles and the SERS detection light beam are the same light beam, so that the experimental detection device is simplified, and the advantage of field real-time detection of SERS is more favorably realized; and the prepared micro-nano silicon-based substrate can be repeatedly used after being cleaned, so that the detection cost is reduced, and the resource utilization rate is increased.

The invention belongs to the detection field and discloses a dew point temperature monitoring system and a use method thereof. The dew point temperature monitoring system comprises a detection device,a server device and a pipeline device; the detection device includes a detection mechanism and a data transmission mechanism; the server device comprises a human-machine dialogue mechanism, a data processing mechanism, an on-off control mechanism, and a data receiving mechanism; and the pipeline device comprises a plurality of air intake pipeline mechanisms, a detection pipeline mechanism, an airextraction mechanism, and a vacuum mechanism. With the dew point temperature monitoring system and the use method thereof of the invention adopted, a customer can conveniently use the pipeline device, so that the on-off of air intake leak-proof solenoid valves on the pipeline device can be controlled, so that detection points connected with the pipelines can be detected, and therefore, the problem of high cost of precision dew point detection in the prior art can be solved.

The invention discloses a near-bottom dragging type random receiving cable earthquake data collection system and method. The system comprises a laboratory control table, a dragging framework and a dragging cable. The collection method comprises five steps including system configuration, system distribution, data collection, system recovery and data processing. The system and the method use the technical scheme of arranging hydrophones on a receiving path in random positions; the functions of reducing the effective path space, improving the transverse resolution ratio and efficiently performingcollection are realized; the design of combining and connecting a plurality of sub sections is used, so that the system combination and expansion are conveniently and flexibly completed; and high adaptation capability is realized on an observation object.

The invention discloses a method and an apparatus for detecting a Karst cave by resonance wave imaging. In the invention, a sound wave emitter is used as a vibration source to send excitation waves around the Karst cave, and unknown Karst caves around the detection points are detected according to the resonance waves received by a receiver in the light of resonance of earthquake wave or sound wave excitated by the excitation waves underground with adjacent Karst caves. The method provided by the invention makes full use of exploration holes, is agile in working mode, simple in requirement on instruments and equipment, remarkable in abnormalities, convenient to explain information and has remarkable effect, is an effective method to explore the Karst caves, and gives full play to task performance of the engineering seismograph and the sound wave instrument. The device used by the invention has a simple structure, and is easy to install on site, intuitionistic to identify and explain abnormalities, high in work efficiency, and wide in application scope. The maximum detecting range by the method reaches to more than ten meters around the holes. The invention can be widely applied to Karst exploration in the fields of urban construction, water conservancy and hydropower, and highway and railway and the like.

The invention relates to a cement-based electromagnetic developing composite material, a preparation method and application thereof and belongs to the field of engineering geophysical exploration anddetection. The cement-based electromagnetic developing composite material is prepared from the following components in parts by weight: 100 parts of cement, 0.4-0.6 part of nano-graphene, 0.4-0.6 partof nano-Fe3O4 powder and 0.1-0.5 part of graphene dispersant. The invention further discloses the preparation method of the cement-based electromagnetic developing composite material and applicationthereof. The composite material has the characteristic of high dielectric constant, can generate a developing effect of a geologic medium close to the underground dielectric constant, and can be usedfor reinforcing the interface reflection effect and improving the exploration depth and accuracy of a ground penetrating radar.