32results about How to "Accurate and reliable detection results" patented technology

The invention discloses a while-drilling borehole electromagnetic wave tomography advanced detection device and method. A detection probe is arranged in a detection drill pipe and used for drilling with a drilling rig; the detection probe automatically detects according to the working state of the drilling rig; during the detection, the stratum conditions of stratum geologies with different radii around a drill hole is detected through transmitting and receiving a group of electromagnetic waves with different frequencies; when the drill hole is finished and the detection probe exits in the drill hole, the data of the detection probe can be transmitted to a site host; the site host can compute the apparent resistivity of the stratums with different radii around the drill hole at each detection point and generate an apparent resistivity atlas with different radii around the whole drill hole depth; according to the apparent resistivity atlas, the geologic feature in a cylindrical space which takes the axis of the drill hole as center can be judged and whether the stratums have water-containing bodies or water-containing geologic structures can be analyzed and judged.

The invention proposes a detection method for expressway congestion intervals based on multi-source traffic data fusion. The present invention performs data preprocessing on the identification data of the expressway path identification system, the flow data of the toll station of the networked toll collection system, and the GPS track data of two passengers and one critical vehicle, and performs multi-level road network on the expressway road network Division; use the preprocessed three types of traffic source data and the divided road network to match the data on the first-level road network, the second-level road network and the third-level road network; use the three-level matching Data, using the hierarchical congestion interval detection framework to calculate the traffic status of each basic section of the multi-level expressway. The invention makes the detection result of the congestion interval more reliable, can detect and obtain multi-level congestion interval distribution results, can reduce the amount of data calculation, and improve the detection speed.

The invention relates to a continuous reflection type laser detection device which comprises a laser emitter, a laser receiver, an emitted light reflector and a received light reflector, wherein the emitted light reflector is used for adjusting the direction of laser beams emitted by the laser emitter and leading the laser beams to be reflected to a specified point on the ground to erect a reflected laser source, the received light reflector is used for changing the direction of the laser beams irradiated in by the reflected laser source and leading the laser beams to be irradiated into the laser receiver, and the laser receiver processes and identifies the received laser beams and emits detected normal signals or alarming signals. The detection device is arranged on the inner side of each shielding gate of the high speed railway, the inter-city railway or the subway and emits laser beams to the edge of a station platform, the laser beams scan the full range of riding channel areas along with opening to closing of the shielding gate, and the alarming signals are sent if people are clamped or obstacles block the shielding gates. The continuous reflection type laser detection device is simple in structure, convenient to install and debug, accurate and reliable in test results, strong in photo-electromagnetism interference resistance and adaptive to ground normally-used reflection objects.

The invention provides a moving area detection method and a moving area detection device. The method comprises the following steps of: performing edge detection on a current image frame and determining pixel points, having luminous flux values greater than a preset luminous flux threshold value, in the current frame; dividing each image frame into a plurality of macro blocks with an identical size, calculating a first correlation coefficient between each first macro block of the current image frame and a second macro block at a corresponding position of the previous image frame of the currentimage frame, and calculating a second correlation coefficient between each macro block of the current image frame and a third macro block at the corresponding position of the next image frame of the current image frame; calculating absolute values of differences between the first correlation coefficients and the corresponding second correlation coefficients and determining the first macro blocks having the correlation coefficient difference absolute values are greater than a preset correlation coefficient threshold; and determining an area where the intersection of sets of the determined pixel points and the first macro blocks as a moving area detection result. Through the method and the device, the accurate detection of a moving area in the image frame is realized by utilizing the characteristics of the moving area and unmoving area in the image frame.

The invention discloses drilling geophysical prospecting advanced detecting device. A first probe wire and a second probe wire are arranged inside a probe of the device, one end of the first probe wire is connected with the signal input end of a first electric brush ring, the other end of the first probe wire is connected with the high-potential signal output end of a first signal sending module, one end of the second probe wire is connected with the signal input end of a second electric brush ring, the other end of the second probe wire is connected with the high-potential signal output end of a second signal sending module, a metal conductive rod is connected with a zero-potential interface of the first signal sending module and a zero-potential interface of the second signal sending module respectively, the current signal input end of a first signal receiving module is communicated with the first probe wire, the current signal input end of a second signal receiving module is communicated with the second probe wire, and the signal output end of the first electric brush ring and the signal output end of the second electric brush ring are connected with the inner wall of a drill stem. The drilling geophysical prospecting advanced detecting device can conduct fine and effective detection prediction on harmful geologic bodies of eutrophic water and water conduction channels around drilled holes of tunnels and roadway heads.

The invention discloses a dam seepage electric field three-dimensional scanning automatic detection device, which is characterized in that a multi-frequency electric field signal transmitter of the device is placed on a dam, an electric field negative electrode is arranged in a water body, which is 200m-1000m away from a suspicious seepage point, at the upstream of the dam, an electric field positive electrode is arranged in a water body at the downstream of the dam, the electric field negative electrode is connected to a negative electrode wiring terminal of the electric field signal transmitter, the electric field positive electrode is connected to a positive electrode wiring terminal of the electric field signal transmitter, and the electric field positive electrode, the multi-frequency electric field signal transmitter, the electric field negative electrode and the suspicious seepage point form a power supply electric field loop; and a field receiving system is used for performing detection on the power supply electric field loop and can determine an electric field gathering area, so that the location of the dam seepage point is tracked. The dam seepage electric field three-dimensional scanning automatic detection device and method can perform automatic tracking and quick searching on the dam seepage point.

The invention designs a single-hole electromagnetic wave tomography advanced detection device and method. A probe is disposed in a borehole. A field main unit controls the probe to transmit, receive, acquire, and transfer signals. Geological formation conditions of different-radius rock formations around the borehole where the probe locates are detected by transmitting and receiving a group of electromagnetic waves different in frequency; apparent resistivities of the different-radius formations around the borehole where the probe locates are calculated by the field main unit; the probe is advanced by a push bar; the steps above are repeatedly performed on each measuring spot, so that the apparent resistivities of the different-radius formations around the borehole at the different-depth measuring spots in the bore can be detected, a map of apparent resistivities of the different-radius formations around the whole borehole is generated, geographical features of the cylindrical space centering on the axis of the borehole can be judged according to the map of apparent resistivities, and analysis and judgment for whether or not the formations are water-logged stratums or contain water-logged geological structures and the like can be made.

The invention relates to a method for stripping reinforcement evaluation, which adopts the geological radar detection method and includes the following steps: (a) determining the composite dielectric constant; (b) geological radar detection: arranging detection lines on the ground of the area to be detected for geological radar detection, According to the composite permittivity obtained in step (a), a radar detection map is made; (c) ground radar data processing: the original collected data in the radar detection map is processed to obtain a clear reflection interface; (d) according to the radar detection The figure evaluates the strip reinforcement. The detection method in the invention has the advantages of non-destructive detection, low detection cost, fast detection speed, continuous detection section, accurate and reliable detection results, and economical efficiency.

The invention discloses a mining borehole radar advanced water detecting forecasting device. A signal output end of a radar wave signal transmitting module is connected with a signal input end of a transmitting antenna, and a signal input end of a radar wave signal receiving module is connected with a signal output end of a receiving antenna. The communication end of the radar wave signal transmitting module and the communication end of the radar wave signal receiving module are respectively connected with a signal transmitting communication end and a signal receiving communication end of a single-chip microcomputer. A communication end of a memory and a communication end of a three-dimensional electronic compass are respectively connected with the data storage communication end and the compass data communication end of the single-chip microcomputer. The data communication end of the single-chip microcomputer is connected with a data communication end of an on-site host by a probe network interface and a network cable. The eutrophic water, the water diversion channel, and other harmful geological bodies around the drilled hole can be detected, and the fine and effective detection forecast can be carried out.