41results about How to "Improve survey accuracy" patented technology

Methods for improving wellbore survey accuracy and placement are disclosed. The Earth's magnetic field may be measured at a magnetically clean surface location and correlated with a non-magnetic reference direction to obtain a direction of the Earth's field (e.g., a magnetic declination or a magnetic inclination). The direction of the Earth's magnetic field may in turn be processed in combination with magnetic measurements made in a subterranean borehole to obtain one or more survey parameters.

A digitalized survey method of wireless communication base station for obtaining its coordinates, the azimuth and altitude of antenna, and the position relative to other base stations is disclosed. Its portable integrated serveying equipment is composed of the measuring instrument including global satellite position instrument, digital compass, digital camera, digital height measurer and digital audio recorder; the data processor consisting of microcomputer and radio emitter; and the data processing center comprising radio receiver and data processor.

The invention discloses a method for searching a blind ore deposit by utilizing nanometer particles in an organism. The method comprises the steps of sampling, treatment and analysis of organism samples and judgment of analysis results, namely whether a to-be-tested area has the blind ore deposit is judged according to the characteristics of the analyzed particles, and ore elements are further predicted, wherein the sampling comprises getting animal and plant tissue samples in the to-be-tested area and storing in a fixing solution; the treatment comprises successfully attaching the animal and plant samples to a transmission electroscope carrying screen directly applied to a test on the premise of not damaging the samples; the analysis comprises detecting and analyzing the nanometer particles in the organism tissues on the carrying screen by adopting a transmission electron microscope. According to the method disclosed by the invention, by detecting and analyzing the nanometer particles in the organism tissues, whether a deep blind ore deposit exists or not can be accurately indicated, and the characteristics of the ore elements of a deep ore can be reflected directly. By utilizing the method in combination with the application of other physical and chemical survey techniques, the success rate for searching the ores can be effectively increased and the cost can be lowered as well.

The invention relates to a bidirectional continuous underway seismic refraction method observation system applicable to complex water area exploration. The bidirectional continuous underway seismic refraction method includes the following steps that first, preparatory work is done; second, underway exploration is carried out, and time parameters T and coordinate parameters S in both directions are acquired; third, reciprocal reverse control hodographs are drawn; fourth, the focal depth H can be obtained through formula calculation, and seismic refraction exploration in a complex water area is interpreted. According to the bidirectional continuous underway observation system, for the two banks, a single hodograph is continuously chased from one bank to the opposite bank, chasing observation is repeated, and a reciprocal shot point is determined through sound velocity in water so as to achieve the encountering purpose; then, on the basis of the equality in the interchange of seismic refraction waves and the parallelism principle of refraction wave hodographs, seismic refraction exploration in complex water areas such as a water surface is achieved, the exploration process is simplified, the exploration accuracy is improved, it is guaranteed that the design of tunnels and the like is reasonable, scientific and safe, and gaps in the field of complex water area exploration at home and aboard are filled in.

A submersible high current PWM-based source system for marine electromagnetic surveying for hydrocarbon exploration. The system converts a periodic, arbitrary digital signal to a high output current in a HED optimized for maximum dipole moment, using PWM modulation and real-time current regulation for precise output amplitude. The design and choice of components allows a wideband EM signal to be generated with sharp transition characteristics and substantially independent of the AC input power characteristics. This in turn enables for improved tailoring of an EM source signal for a specific subterranean prospect, and thus increased accuracy of the EM data.

The invention discloses a horizontal geological survey arrangement method for a deep buried underground cave depot. The method comprises the following steps: 1, performing ground survey, forming a measurement area geological background report and a geological survey implementation scheme; 2, carrying out surface area geophysical prospecting, carrying out engineering geological area division, generating a measuring area project geology partition map, and delineating a geophysical prospecting abnormal band; 3, carrying out long-distance horizontal drilling, taking a core and reserving a sample for indoor geotechnical test, and analyzing the front situation of excavation of the cave depot; 4, predesigning a cave depot excavation support; 5, carrying out the tunnel excavation of the cave depot, and carrying out intra-hole advanced geophysical prospecting before excavation; 6, carrying out deep blast hole detection, and judging front geological conditions; 7, comparing advance geophysical prospecting information, and dynamically adjusting support design parameters in time; and 8, summarizing detection results, constructing an underground cavern three-dimensional geological model, carrying out cave depot support design and timely support modification according to the detected geological conditions so as to guarantee the tunnel excavation safety. According to the method, the geological condition of the underground cave depot can be accurately surveyed, and the construction time is short.

The invention discloses a method for analyzing bus ODs of main passenger flow volume based on bus-mounted GPS data. The method includes the following steps: 1. collecting basic data; 2. calculating per capita residential area and per capita employment area; 3. calculating the number of living persons and the employment quantity in a 500m range of each bus station along a certain bus route; 4. obtaining the proportion of the number of people who get on the bus to the number of people who get off the bus of each station in morning and evening rush hours; 5. calculating the maximum possible number of people who get on the bus and the maximum possible number of people who get off the bus of each station along the bus route; 6. determining the number of people who get on the bus or the number of people who get off the bus of each station, and calculating the number of people who get off the bus or the number of people who get on the bus of each station according to the proportion; 7. allocating the number of people who get on the bus of each station to downstream stations according to the proportion, and calculating the OD quantity among the stations; and 8. adjusting and checking the getting-on and getting-off proportion. The method can well solve the problem that obtaining bus passenger flow ODs relying on artificial investigation is tedious, has relatively ideal applicability, and has very high practical value.

The invention relates to a power station site survey method based on an unmanned aerial vehicle. The method comprises the following steps: collecting an image of a power station site through an unmanned aerial vehicle; filtering the image and processing the image into a 3D model through an image processing terminal; acquiring real scale data based on the 3D model through a data processing terminal; and finally, finding points of difference from the real scale data, and completing data modeling. A site image can be collected directly through an unmanned aerial vehicle, and there is no need to shoot or measure a site image artificially. There is a unique way of conversion for generating a 3D model from a plane image, which facilitates processing and reference by the backend. Better scale conversion is available, real data can be obtained from the 3D model, and the accuracy of survey is improved. The method is simple to implement. Roof can be surveyed, and dead angles can be measured. Potential safety hazard caused by artificial survey is avoided.

The invention discloses an acoustic reflection device and method for detecting pile hole base geological flaws. The device comprises an acoustic detection device, an acoustic emission-reception terminal and a cable. The acoustic emission-reception terminal comprises a base and sensors. The base is provided with a hollow groove. At least two sensors are arranged in the hollow groove. Each one of the sensors comprises an independent acoustic emission-reception function. The sensors are connected to the acoustic detection device through the cable. The method comprises device connection, base plate length adjustment, pile hole base detection, acoustic reflection migration imaging processing and acoustic reflection composite structure diagram interpretation. The device and method are suitable for manual hole digging and mechanical hole digging in slush and solves the problems of personnel construction safety, detection infeasibility because of water filling the mechanical pile hole, large safety hidden trouble of a manual hole digging construction process and low work efficiency.

The invention discloses a high-frequency detection system, which is characterized by mainly comprising a processing chip U, a band pass filtering circuit, a resistor R6, a capacitor C3, a capacitor C4, a diode D5 and the like, wherein the resistor R6 is connected in series between the band pass filtering circuit and pin IN of the processing chip U; the anode of the capacitor C3 is connected with pin C1 of the processing chip U after passing through a resistor R7, and the cathode of the capacitor C3 is connected with the band pass filtering circuit and pin GND of the processing chip U; the anode of the capacitor C4 is connected with pin C2 of the processing chip U, and the cathode of the capacitor C4 is connected with pin GND of the processing chip U; electrode P of the diode D5 is connected with pin C3 of the processing chip U, and electrode N of the diode D5 is grounded. According to the high-frequency detection system, an integrated chip CX20106A can be combined with a novel peripheral circuit to effectively process an input detection signal and well identify a high-frequency signal in the detected signal, so that the high-frequency in the detected signal can be accurately identified, and the detection accuracy of a detector is greatly improved.

The invention provides a water-pressure-caused plugging drill hole water pressing test method. The method includes the following steps of 1, hole forming; 2, mounting; 3, placement; 4, plugging causing; 5, water injection; 6, conduction of a water pressing test; 7, closing of pressure relief; 8, completing of the test. By means of the method, detection work efficiency is improved, after a hole is drilled, the test on the hole is conducted continuously at a time, and the test time of each hole segment is less than 1 hour; survey precision is improved, the plugging causing pressure is sufficient, the pressure maintaining effect is good, and the test precision is two times higher than that of a drilling machine water pressing test; the hole clamping accident rate is low, only one water pipe is adopted for a whole probe, no oil pipe exists, few accessories of the probe exist, site operation is facilitated, and hole clamping accidents are reduced.

The invention discloses a high-frequency radar detection circuit for three-dimensional geological exploration and a detection method thereof. The invention comprises an adjustable voltage stabilizingmodule, a power supply storage control module, a signal source module, a high-frequency ultrasonic transmitting module, an ultrasonic receiving module, a radar receiving control module and a signal processing module; the adjustable voltage stabilizing module changes an output voltage value by utilizing the resistance value of a variable resistor RV1, and then the voltage required by storage is met; the power supply storage control module stores the obtained power supply; the signal source module generates a signal instruction by acquiring a conduction voltage; the high-frequency ultrasonic transmitting module generates high-frequency ultrasonic waves through a signal instruction; the radar receiving control module adjusts and controls the received wave band signals; the signal processing module repairs the obtained detection wave band and suppresses interference of electromagnetic waves through an inductor L1; according to the invention, accurate detection of complex geology and processing of interference frequency bands are realized.

The invention provides a geological disaster assessment method and a device, a storage medium, a server and a system, and the method comprises the steps: transmitting prompt information to a user terminal according to a geological disaster assessment request transmitted by the user terminal, the prompt information being used for guiding a user to collect and upload geological information of a to-be-assessed region; receiving geological information sent by the user terminal; and performing geological disaster assessment on the to-be-assessed area based on the geological information, determininga geological disaster assessment result of the to-be-assessed area, and sending the geological disaster assessment result to the user terminal. A user is prompted to upload geological information ofthe to-be-assessed area; in this way, the user can be guided; collection of geological information of a to-be-assessed area is completed through a user; according to the method, a lot of manpower andmaterial resources can be saved, so that resources are greatly saved, the understanding degree of a user on geological disaster hidden dangers around can be improved as much as possible, the investigation precision of geological disaster investigation can be improved as much as possible, and the geological disaster investigation efficiency is improved.

The invention provides a TV ratings survey method, belonging to the technical field of a digital television. The method comprises a data collection step of the data collection of user watching behaviors by using a data collection module on a set-top box, a data display step of connecting data signals collected in the above step to a set-top box channel code display module through a control data line by using a set-top box CPU so as to display the channel code of currently played TV program, a data transmission step of sending the collected and displayed data in the above two steps to a center server through the Internet, a telephone network, a GSM network or a GPRS network, a data storage and analysis step of carrying out real-time storage on the received data and automatic analysis statistical on the data by the center server, and a data result display step of displaying the data which is calculated and analyzed by the center server in the form of ratings by a client to timely and conveniently obtain the surveyed ratings. The method has the advantages of strong real-time performance, high survey accuracy, good objectivity, fast speed, and low cost.

The invention relates to a mountainous area railway low-altitude survey operation method. The method overcomes the problem that the existing operation method cannot meet the operation requirement of aspecial working environment of a complex mountainous area, can ensure the safe survey operation of an unmanned aerial vehicle in the complex working environment of the mountainous area, and can improve the mountainous area low-altitude non-contact survey precision. The method comprises the following steps of S1, analyzing an operation environment to be subjected to low-altitude survey, and formulating a low-altitude survey operation and geological interpretation technical scheme; S2, carrying out the large-scale and rapid remote sensing interpretation on a survey area to obtain the macroscopic engineering geological information, and obtaining the large-scale DEM and images of the survey area; S3, enabling a low-altitude flight reconnaissance platform to adopt an unmanned aerial vehicle and a helicopter to separately determine and carry the corresponding reconnaissance devices according to the surface features; and S4, carrying out multi-means combined interpretation analysis, adoptinga GIS platform, establishing a three-dimensional geological interpretation sand table, realizing the fusion integration of the remote sensing satellite data and the helicopter and unmanned aerial vehicle survey data, so that the combined interpretation analysis of survey objects is realized.

The invention relates to an identification system, a method, a device and a storage medium of an illegally outgoing mailbox. According to at least one of the mail data to be tested between the internal mailbox and the outgoing mailbox to be identify in the preset period, the position information of the user corresponding to the internal mailbox, attribute tag information of the outgoing mailbox tobe identified, second characteristic information is extracted, and the second characteristic information is input to the outgoing mailbox identification model to generate an identification result ofwhether the outgoing mailbox to be identified is legal or not. As the illegal outbound mailbox is identified by the method to effectively identify and supervise the illegal outgoing e-mail such as outgoing e-mails to private e-mail boxes of employees of enterprises, when investigating the data leakage event, the method of the invention can distinguish the mailboxes of the customers' mailboxes, thesuppliers' mailboxes and other external legal sending objects, and only the mailboxes which are not legally outsourced are pertinently investigated, the investigation emphasis is not confused, the investigation time is greatly shortened, and the investigation precision is improved.

The invention discloses a laser marking device for loading a compass, which includes a support frame, on which a rotatable disk seat is arranged, and vertically intersecting horizontal marking lines and longitudinal marking lines are fixed on the top of the disk seat. Marking line, the intersection of the horizontal marking line and the longitudinal marking line is aligned with the axis of the disc base, and the top of the disc base is formed with an installation position for placing a compass, and the installation position is located between the horizontal marking line and the longitudinal marking line. Below the line, two horizontal laser emitters and two vertical laser emitters are installed on the side of the disk base, and the laser beams emitted by the two horizontal laser emitters are respectively flush with the extension lines at both ends of the horizontal marking line. The laser beams emitted by the two longitudinal laser emitters are respectively flush with the extension lines at both ends of the longitudinal marking line. The invention can quickly adjust to the calibration direction without relying on visual inspection, and can use laser beams to indicate the direction at the same time, which not only reduces the deviation caused by visual inspection, but also greatly improves the survey accuracy.