173results about How to "Avoid laying" patented technology

The invention relates to a pose measure system of a cantilever type heading machine. The pose measure system comprises a laser pointing rangefinder and an optical goniometer. The pose measure system is characterized in that: the laser pointing rangefinder respectively emits a visible laser and an infrared ranging laser; the visible laser forms an image on a focal plane of a convex lens of the optical goniometer through the convex lens; a direction angle alpha<,> and a pitch angle beta<,> of a optical axis of the optical goniometer relative to a laser beam are obtained through image point coordinates. Because a preset optical axis of the optical goniometer is parallel to a fuselage axis of the heading machine, the alpha<,> and the beta<,> are the direction angle and the pitch angle of the fuselage axis relative to the laser beam. A spinning angle gamma of the fuselage relative to a horizontal plane can be obtained through a tilt angle sensor installed parallel to a datum plane of the heading machine. Therefore, influence on measurements of the direction angle alpha<,> and the pitch angle beta<,> due to the spinning angle gamma is corrected so as to complete the measurements of the direction angle alpha<,> and the pitch angle beta of the heading machine relative to the laser beam, and the spinning angle gamma of the heading machine relative to the horizontal plane. With the present invention, a range between the fuselage of the heading machine and the laser pointing rangefinder can be obtained through the infrared ranging laser; a position coordinate of the heading machine can be obtained through combining the position coordinate of the laser pointing rangefinder and parameters of emission angle of the laser beam; tunnelling workload and other information can be obtained through system output data.

The invention belongs to the technical field of electric power equipment on-line monitoring, and in particular relates to a transformer substation capacitor on-line monitoring method and device based on a wireless mode, wherein the method mainly comprises the following steps: designing and additionally arranging a self-electricity-supplying current measuring unit at the high-voltage side of each capacitor, additionally arranging a self-electricity-supplying voltage measuring unit at the secondary side output end of an electricity discharge PT (potential transformer) of each group of parallel capacitors, acquiring the working voltage and current of each capacitor, and sending the obtained working voltage and current of each capacitor wirelessly to a monitoring base station; monitoring an internally-built computer and a wireless module of the base station; sending a capacitor voltage and current synchronous sampling starting conversion command, receiving, storing and managing measurement data, calculating the capacitance and medium loss of each capacitor by utilizing spectrum analysis, sending the calculated result to a monitoring host machine of a remote monitoring center for comprehensive estimation and analysis, and giving out a fault alarm for the capacitors with the variation greater than a certain value.

The present invention discloses a method for network access in a terminal device through a wireless means in the technical field of communication. The method comprises the steps of: receiving a firstmessage from a terminal device at a resident node in a communication network, wherein the first message comprises an authentication request; sending a second message by the resident node, wherein thesecond message is processed to a third message by a network node, the third message is configured to allow the gateway device to identify an authentication request and / or an authentication mode of theterminal device accessing a network, and the authentication request and / or the authentication mode of the terminal device accessing the network can be used for authentication of the terminal device by the network; and receiving information of an authentication result from the network by the resident node, and sending the information of the authentication result to the terminal device. The methodfor network access in a terminal device can employ the mobile network to complete the terminal device in the resident node accessing the network so as to avoid the special laid network channel and improve the utilization of the mobile network. The embodiment of the invention further provides a corresponding device and system.

The invention discloses an agricultural planting greenhouse with an automatic cooling function, which comprises a greenhouse body composed of support plates fixedly connected to a ground and a greenhouse framework; the two vertical plates are symmetrically and fixedly connected to the ground, a hollow plate is fixedly connected to the upper ends of the vertical plates, air guide plates are uniformly distributed on and communicated with opposite side walls of the hollow plate, and one end, far away from the side wall of the hollow plate, of each air guide plate is fixedly connected with a sun-shading plate that is of hollow structure. According to the invention, when external sunlight irradiation temperature rises in the noon, a thermal expansion liquid expands rapidly, so that air is introduced into the sun-shading plates that stretch to shield greenhouse protective film, the direct irradiation of sunlight to the greenhouse is reduced, the rise range of the temperature in the greenhouse is narrowed; when the external sunlight irradiation temperature falls, the thermal expansion liquid contracts so that the air in the sun-shading plates contracts less, manually laying and removing sunshade net is prevented, and the workload of people is reduced.

The invention discloses an indoor multidimensional-rail type intelligent patrolling robot based on limited relay-chamber bends. The intelligent patrolling robot comprises a patrolling robot body, wherein the patrolling robot body is fixed on a movable platform; the movable platform slides on a rail, and is connected with a driving mechanism; the driving mechanism is connected with an upper computer and a power supply device; a supporting platform is arranged on the patrolling robot body; a detection assembly is arranged on the supporting platform; a multi-connecting-rod grasping device is arranged under the movable platform; a position label recognizing device is arranged on the multi-connecting-rod grasping device. The intelligent patrolling robot disclosed by the invention has the benefical effects that the robot can realize three-dimensional patrol; different transformer substation chambers can be examined by one patrolling robot. The intelligent patrolling robot disclosed by the invention overcomes the defect of running dead corners of a robot, so that the utilization rate of the robot is increased.

The invention discloses a projected agriculture environment monitoring pre-alarm system with distributed heterogeneous wireless sensor networks. The projected agriculture environment monitoring pre-alarm system comprises a plurality of wireless sensor nodes, a plurality of wireless router nodes, a wireless central control node and a global system for mobile communications (GSM) short message alarming module. One or more of the wireless sensor nodes are connected with the plurality of the wireless router nodes which are connected with one or more of the wireless router nodes based on the router nearest principle; the wireless central control node is connected with one or more of the wireless router nodes based on the router nearest principle and in charge of transmitting collected data of the whole network to a personal computer (PC); and the PC analyzes collected network data, when the data meet alarm requirements, the GSM short message alarming module sends short alarm messages to users, and the users actively control and monitor the network data unloading and operation facilities through a GSM network. The projected agriculture environment monitoring pre-warning system with distributed heterogeneous wireless sensor networks has the advantages of having network expansibility and heterogeneity, a plurality of kinds of environmental factor monitoring functions, and a GSM network short message pre-alarm control function, and being simple in mounting and maintenance, low in cost, and convenient to use.

A method and apparatus for controlling pests found in the ground, in particular termites. The object is achieved firstly by determining nests located in the ground using a localization method indicating underground cavities and then by drilling a hole from the earth's surface to the localized cavity. An antenna connected to a microwave generator is then inserted in the drilled hole until it is approximately in the localized cavity, and then microwave energy is radiated via the antenna into the ground in the region around the localized cavity. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.

The invention relates to an electronic-type fee-control electric energy meter and particularly relates to a wireless remote meter reading fee-control electric energy meter. The electric energy meter comprises a microprocessor and is characterized by also comprising a wireless communication module with the microprocessor, thus realizing two-way communication with a remote server through a wireless network. Compared with the prior art, the electric energy meter provided by the invention has the following advantages: 1, meter reading is convenient, so that a power supply department does not need to carry out fussy meter reading in a user power utilization field but only needs to carrying out wireless remote meter reading; and 2, the user power utilization condition and the power grid operating condition can be monitored in real time, and task monitoring and real-time stationary measurement are customized through a master station, so that the power utilization condition and the power grid operating parameter can be analyzed.

The invention relates to an on-line monitoring method for a transformer substation parallel connection compensating capacitor group. According to the method, a self power supply current measurement unit is additionally arranged and designed at the high-voltage side of each capacitor, the work current of each capacitor is obtained and is sent to a monitoring base station positioned in a transformer substation in a wireless way, an engineering calculation model built by a computer according to the serial and parallel connection capacitance and current change amplitude and direction of the capacitor group is utilized for calculating the capacitance of each capacitor, the calculation results are sent to a monitoring host machine of a remote monitoring center, data of the same capacitor is subjected to historical comparison, data of the same group of capacitor is respectively subjected to transverse and longitudinal comparison, and the fault warning is provided for the capacitors with the variation greater than a certain value after the capacitor parameter variation is integrally estimated.

The invention discloses a bamboo glue sleeper and a preparation method thereof. The preparation method comprises the following steps: (1) selecting a raw material; (2) cutting off the raw material according to a specified length, sectioning the cut-off raw material into strips, removing tabasheer and the bamboo outer skin, and processing the strips into thin bamboo skin pieces; (3) carrying out carbonization treatment on the thin bamboo skin pieces obtained in the step (2); (4) grinding the carbonized thin bamboo skin pieces into a siamesed fiber state; (5) putting the material obtained in the step (4) in phenol glue to carry out pressurization gumming; (6) carrying out automatic dehumidification on the material obtained in the step (5); (7) pressing and curing the material obtained in the step (6) into a slab; and (8) sawing the periphery width of the slab by 5 cm to eliminate the fringe effect during compression. The bamboo glue sleeper is low in carbon emission, environment-friendly and safe, does not deform when being affected with damp due to water, and is antiseptic, prevented from damage by worms, antiflaming and suitable for being used under a complex condition.

The invention discloses a vehicle license plate recognition method and system. The vehicle license plate recognition method includes acquiring license plate information of several vehicles in driveways by a shooting unit to obtain acquisition videos, acquiring license plate information of each frame in the acquisition videos, judging whether license plate numbers in the license plate information are new license plate numbers or not, if not, arranging the license plate information into corresponding arrays according to similarity of the license plate information, that is, arrays having highest similarity, and judging whether the maximum difference between the frame numbers of the license plate information in the arrays is up to a first preset value or not, and if yes, voting the license plate number in the arrays to obtain available license plate numbers. One shooting unit can acquire license plate information of the vehicles in the driveways, paving inductors and mounting stroboscopic lights and cameras in each driveway are omitted, and construction increment and difficulty adding are avoided.

The invention discloses a traction substation feeder cable partial discharge monitoring device and monitoring method. The traction substation feeder cable partial discharge monitoring device is formed in the mode that a terminal computer (2) provided with a GSM signal receiving module is installed in a traction substation; multiple cable partial discharge monitors (1) are distributed on a traction substation feeder cable; each cable partial discharge monitor (1) is composed of a sound sensor (11), a temperature sensor (12), a single-chip microcomputer (13) and a GSM signal emission module (14) in a sequential connection mode, and the sound sensor (11), the temperature sensor (12), the single-chip microcomputer (13) and the GSM signal emission module (14) share the same power supply (15); the power supply (15) is composed of an induction coil (15A), a rectifying circuit (15B), a DC / DC converting circuit (15C) and a storage battery (15D) in a sequential connection mode. The traction substation feeder cable partial discharge monitoring device is low in cost, and capable of judging and positioning a partial discharge fault point of the feeder cable comprehensively, quickly and accurately, thereby facilitating maintenance in time and better guaranteeing safe, reliable and efficient operation of the feeder cable.

The invention discloses a debris flow video monitoring 3G network transmission alarm system. The debris flow video monitoring 3G network transmission alarm system is characterized by comprising a video monitoring alarm module, a mud water level sensor, a 3G transmission module and a monitoring center, wherein the video monitoring alarm module comprises a 3G web camera, a tripod head, a seeking searchlight, a solar cell panel, a solar charge controller and a storage battery. The monitoring center comprises a monitoring center service end and a monitoring center client-side, the 3G web camera is connected with the tripod head, the seeking searchlight is installed above the 3G web camera, the solar cell panel and the storage battery are connected with the solar charge controller, the 3G web camera is connected with the monitoring center through the 3G transmission module, and the monitoring center service end is connected with the monitoring center client-side. The 3G web camera and the 3G transmission module are adopted, the operating cost of the system is also reduced while arrangement of massive cables are avoided by utilizing an existing 3G network, and unattended real-time monitoring on the site is achieved.

The invention discloses an interactive high-definition operation teaching apparatus and method. The apparatus is composed of a fixed mechanism, moving wheels, a control board, a control box, a turntable, a storage tank, a hydraulic push rod, a fixed block, a first electric push rod, and a second electric push rod, a flange plate, a first rotating mechanism, a moving mechanism, a heat radiating mechanism, a monitoring mechanism, a storage battery, a first rotary motor and a second rotating mechanism. The control box is fixed to the center of the top of the fixed mechanism by welding; one side of the control box is connected with the control board by the second rotating mechanism; the storage tank is arranged at one side of the top of the control box; the turntable is embedded into one sideof the storage tank; the first rotary motor is installed at the bottom of the turntable and is connected with the inner wall of one side of the control box by a bracket. According to the high-definition operation teaching apparatus, data can be transmitted conveniently by the wireless network module, so that laying of lots of lines is avoided and thus the usage convenience is improved effectively.

The invention discloses a support-free and opposite pull rod combination construction method for a concrete triangular rigid frame in consideration of a restraint action of inclined legs. The method is mainly characterized in that firstly, the inclined legs on two sides provide counter force for each other by using opposite pull rods, are balanced mutually and are poured in a layered way, so that the distribution of a complicated huge support system below the inclined legs is avoided; secondly, a main longitudinal beam support between the inclined legs is supported on the inclined legs, an arch seat or a carrying platform, and a main longitudinal beam support outside the inclined legs is supported on a supporting layer, so that the consumption of a driven precast pile or a cast-in-situ bored pile can be reduced to the greatest extent, the construction period can be shortened, and the cost is reduced; thirdly, a simple computation method for an effective pre-stress value which actually acts on the main longitudinal beam when a pre-stressed tendon of the main longitudinal beam of the triangular rigid frame is tensioned is provided, the restraint action of the inclined legs is taken into full consideration, a pouring mode of the main longitudinal beam can be determined by simple computation, and a guiding significance is provided for design and construction.

The invention discloses a city road lamp management system based on a LiFi (Light Fidelity) technology. The system comprises road lamps distributed on city roads. The road lamps are LED road lamps. The system also comprises a LiFi base station, wherein the LiFi base station comprises optical fiber links, and the LiFi base station is used for establishing connection between an access end and an internet end, processing electric signals and receiving and / or sending the electric signals; a centralized control chamber which communicates with the LiFi base station through the internet, wherein a server and a display screen are arranged in the centralized control chamber; and controllers which are mounted on the LED road lamps and are used for controlling the work of the LED road lamps. The monitoring cameras are mounted on the LED road lamps. The monitoring cameras are in communication connection with the controllers. Photoelectric communication devices are arranged on the LED road lamps. The photoelectric communication devices comprise LED drivers, LEDs, PIN photoelectric diodes and trans-impedance amplifiers. The controllers are in communication connection with the photoelectric communication devices of the LED road lamps through receiving ends.

The invention provides a wireless intelligent emergency illumination lamp provided with a base. A circuit board and a standby battery are arranged in the base. A rotational lamp holder is arranged on the base, the lamp holder can rotate around the horizontal axis and / or vertical axis of the base, an LED lamp plate and a lampshade connected to the top end of the lamp holder are arranged in the lamp holder, the circuit board is electrically connected with an external power source and the standby battery, the LED lamp plate is electrically connected with the circuit board, and the circuit board is provided with a wireless communication module. The invention further discloses a wireless intelligent emergency illumination system. The system comprises emergency illumination lamps, a wireless data acquisition device, a router and a host. The emergency illumination lamps can send real-time work states of the emergency illumination lamps to the host by means of the wireless communication module. The wireless intelligent emergency illumination lamp has the advantages that the construction process is simple, construction cost is low, the cooling effect is good, and service life is long.

The invention discloses a novel multi-functional superposed composite soil detection device. The device comprises extension arms, detection rods, a data central processing device and a solar cell power supply system. The extension arms are scattered in a star shape and are connected through a supporting point fixing rod at tail ends of the extension arms. The supporting point fixing rod adjusts an extension direction. The detection rods are installed on the extension arms through snap joints. The data central processing device is fixedly installed on the top of the supporting point fixing rod. The solar cell power supply system is arranged at the side of the data central processing device and is fixed to the supporting point fixing rod. The data central processing device is arranged at laterally below the solar cell power supply system. The solar cell power supply system provides power for the data central processing device and the detection rod. The device provides a complete monitoring data change process, is economic and environmentally friendly, can be installed and operated simply and realizes multi-functional and composite superposed 3D soil detection.

The invention discloses a synchronous system and method for multi-cluster information caching based on cloud host. The system stores the registration information of all separate clusters which join the synchronous system through control center. In addition, several separate clusters obtain the IP address information of other separate clusters which have registered through periodic communication; combining more clusters to control protocol through transmission and forming net network structure. Therefore, even if adopting global network to communicate, the stability and low latency of synchronous system can be guaranteed. Moreover, the system and method also disclose a synchronous method for multi-cluster information aching based on cloud host. The system and method avoid laying or renting special line during adopting common cloud network to cache information synchronously which can reduce cost.

The invention provides a line loss monitoring device which comprises a plurality of collecting terminals and a monitoring terminal, wherein each of the collecting terminals comprises a single chip microcomputer which drives an electric quantity collector through a drive circuit and is connected with a wireless transmitting module and a timer; the monitoring terminal comprises a wireless receiving module and a central processing unit; the collecting terminals and the monitoring terminal are in data communication through a wireless network. The line loss monitoring device provided by the invention not only is relatively low in cost and relatively wide in application range, but also can be used for immediately and accurately acquiring the line loss condition and data in a monitoring field so as to accomplish immediate repair and stop problems or behaviors which affect the line loss in an assistant manner. The line loss monitoring device further can be used for accumulating the line loss data in an actual electric power supply process, thereby providing support for normalizing the line loss numerical value.

The invention discloses a novel construction engineering environment detecting device. The novel construction engineering environment detecting device comprises a base, a control box and a protectivetop frame; a rotating table is arranged on the top of the base; an electric telescopic rod is arranged on the top of the rotating table; a control door is arranged on a surface of the control box through hinges; a handle is arranged on a surface of the control door; an LED display screen is mounted on the surface of the control door above the handle; a control button is arranged in the control box; a moisture-proof partition is arranged inside the control box below the control button; a control component is arranged inside the control box below the moisture-proof partition; a support column ismounted on the top of the control box; a visibility detector is mounted on a surface of the support column; and solar electric panels are evenly arranged on a surface of the protective top frame. Theinvention has a series of structures, which can enable the device to achieve mobile detection in a construction engineering environment detecting process; and the invention uses solar energy, and hasa warning function.

The invention discloses an intelligent power consumption management system, including cloud servers and mobile terminals, the system also includes a safety monitoring subsystem, energy management subsystem, an automatic fire patrol inspection subsystem, an intelligent evacuation subsystem and a centralized management platform, wherein the centralized management platform is arranged on the cloud server, and the safety monitoring subsystem, the energy consumption management subsystem, the automatic fire patrol inspection subsystem and the intelligent evacuation subsystem are respectively communicatively connected with the centralized management platform, and the mobile terminal is communicatively connected with the centralized management platform; The invention realizes the unified management of a plurality of subsystems, is simple in construction and convenient in maintenance, avoids the inconvenience of laying a large number of cables and later maintenance, and reduces the risk of firecaused by the accumulation and heating of a large number of cables. The accuracy of measurement is effectively guaranteed by comparing the measurement data. Fire can actively guide users to evacuate,and avoid users in the case of unaware of the wrong elevator, resulting in safety accidents, effectively improve the efficiency of evacuation.

The invention relates to an automatic control system for remote irrigation, in particular to an electromagnetic valve which is used for irrigation and capable of realizing automatic control of remote irrigation. The electromagnetic valve comprises a manual operation button and a power supply switch, and further comprises a voltage regulator, an electromagnetic valve and a microcontroller which are connected with the power supply switch; the electromagnetic valve is connected with a valve in a water pipe; and the microcontroller is connected with the voltage regulator. According to the automatic control system disclosed by the invention, an irrigation program indication can be sent to the valve in a wireless manner, so the program is unnecessarily sent in a wired mode; and only two power supply wires are needed. If the electric energy is provided by the wind energy or the solar energy, the wireless manner can be realized totally without needing the power supply wires, therefore the copper wire spreading in the conventional structure is avoided, and the manpower and resource costs are saved; meanwhile, the remote irrigation can be realized more conveniently; and the control is more automatic and intelligent.

The invention provides a GPS clock signal-based high voltage capacitive equipment insulation online monitoring system, including an on-site monitoring unit comprising a CPU, a wireless communication module which is 2.4GHz wireless communication module, a GPS clock receiving module, and a on-site monitoring current unit and a on-site monitoring voltage unit installed on the same bus line, and a station terminal control computer. An insulation online monitoring method includes that: the station terminal control computer sends synchronous remotely collection order to each on-site monitoring unitvia 2.4GHz wireless network; each on-site monitoring unit receives GPS clock signal and realizes synchronous remotely collection of each on-site monitoring unit on the booking time, comparing the uploaded information, calculates equivalent capacitor, end screen current and dielectric loss factor of high voltage capacitive equipment after the each on-site monitoring unit obtains end screen currentsignal with clock signal or sequence number and PT secondary side voltage signal.

The invention discloses a deep-draught semi-submersible production platform with an oil storage function. The deep-draught semi-submersible production platform is characterized by comprising a rectangular frame body which is formed by connection of four bypass pipes and four nodes, wherein a stand column is arranged at the top of each of the four nodes; the tops of the four stand columns together support an upper group block; an empty cabin, a ballast water cabin, a crude oil cabin, an anchor chain cabin and a passage for transporting personnel and cargo are arranged in the four stand columns; a ballast water cabin and a passage for pipeline arrangement, maintenance and inspection are arranged in the four bypass pipes; the upper group block adopts a plane box structure; and the upper group block is a carrier for the offshore oil and gas treatment equipment and a living building.

The invention relates to an inertial integrated navigation system based on magnetic nail deviation correction and position encoder assistance. The inertial integrated navigation system comprises a main controller, wherein the main controller is connected with a magnetic nail sensor, a position encoder, an inertial sensor and a communication interface, the position encoder is used for calculating an AGV vehicle running distance and transmitting the AGV vehicle running distance to the main controller; the inertial sensor is used for measuring AGV angle variation data, and transmitting the AGV angle variation data to the main controller to serve as a main basis for AGV attitude control; and the communication interface is used for transmitting data processed by the main controller to a higher-level control system. The inertial integrated navigation system based on the position encoder and magnetic nail deviation correction reduces maintenance cost, improves navigation precision, and is wider in application occasion.

The invention discloses a trampling power generation street lamp capable of being automatically turned on by sensing pedestrians at night. The trampling power generation street lamp comprises a main body box, wherein a generator is fixedly connected in the main body box; two pedal cavities with upward openings are equidistantly formed in the left and right sides in the main body box and are positioned on the left side of the generator; the pedal cavities are bilaterally symmetrically arranged by taking the generator as the center; the lower side of the pedal cavity communicates with a rack cavity; the inner side of the rack cavity communicates with a bevel gear cavity; a meshing cavity is formed below the generator; and energy generated when pedestrians walk is collected through the pedaland converted into electric energy to supply power to the street lamp, extra wires are prevented from being laid, the construction cost of the street lamp is reduced, the external brightness is sensedthrough an optical sensor, energy waste caused by turning on the street lamp in the daytime is avoided, the street lamp is turned on when pedestrians step on the pedals on the two sides and is automatically turned off after pedestrians leave, and therefore the street lamp is sensed and automatically turned on and prevented from being turned on thoroughly to waste energy.

The invention relates to the technical field of quantum encryption, aims to solve the problem that data of an existing internet behavior terminal cannot be safely transmitted to a public security auditing system, and provides an internet behavior auditing system and method based on a quantum key encryption technology. The internet behavior auditing system comprises quantum key management equipmentwhich is used for generating and issuing a quantum key; a quantum encryption terminal which is in communication connection with the quantum key management equipment so as to encrypt the internet behavior data; a quantum encryption server which is in communication connection with the quantum key management equipment and the quantum encryption terminal and is used for decrypting the encrypted data;an internet behavior terminal which is in communication connection with the quantum encryption terminal so as to send internet behavior data to the quantum encryption terminal; and an internet behavior auditing server which is in communication connection with the quantum encryption server so as to receive decryption data sent by the quantum encryption server. According to the system provided by the invention, the security of data transmission can be greatly improved, the monitoring management of an internet behavior auditing end is facilitated, the laying of channels is reduced, and the datamonitoring range is expanded.

The invention provides a target tracking method and a target tracking system. The target tracking method comprises the following steps: receiving a target tracking request and feature information of the target sent by a target management server; determining a search range of the target according to the feature information of the target, and establishing search terminal groups in the search range,wherein the search terminal groups comprise a plurality of search terminals; receiving the target information reported by each search terminal in the search terminal groups to determine whether the search terminal groups find the target; and determining the trajectory of the target according to the target information reported by the plurality of search terminal groups. The target tracking method is capable of exactly determining the trajectory of the target, and at the same time, avoiding the layout of a large amount of road monitoring equipment, saving the tracking cost, and improving the flexibility and precision rate of tracking.

The invention belongs to the field of slope stability monitoring, and particularly relates to a slope displacement monitoring method based on relative orientation and absolute orientation algorithms.According to the method, a common non-measurement digital camera is used for shooting pictures, the camera is arranged at a slope monitoring point, and relative orientation standard control point locations are arranged in a field range which can be obtained by the camera. Photograph data shot in the same view field range are resolved and analyzed in different periods, and a relative orientation-absolute orientation double-image analysis method is utilized to resolve a photographic baseline component so as to measure the displacement of a monitoring point. The side slope displacement is measured through camera displacement, the automation degree is high, manual operation is relatively little, and the limitation of traditional measurement means under some extreme geographical conditions canbe overcome.