143results about How to "Realize real-time observation" patented technology

The multi-channel data acquisition system provided by the present invention includes an acquisition computer, an acquisition display and an acquisition end printer, the acquisition computer is equipped with a plurality of A / D acquisition cards and a buffer, and each A / D acquisition card input terminal is provided with a voltage Isolation conditioner, the acquisition computer is connected to the control computer and the echo computer through the back end of the Ethernet, the control computer is installed with a dual-screen display card, and connected to the master and slave monitors and the control terminal printer respectively, and the echo computer is connected to the echo display and the echo printer. The invention also provides a method for multi-channel data acquisition. The invention has the advantages of being able to measure multiple channels, suitable for multi-signal recording occasions, convenient display and printing of data and waveforms, high degree of automation and accuracy, and conducive to intelligent acquisition, especially suitable for rocket launching and weapon testing , petrochemical and other dangerous and heavily polluted on-site signal detection and recording occasions.

The invention discloses an in vivo small animal fluorescent molecular tomography imaging system and method; the system comprises a near infrared laser, a beam expander, an electric control rotary table, an object to be imaged, a narrowband filter plate, a charge-coupled device (CCD) camera, an X-ray emitter, an X-ray detector and a computer; the CDD camera and the narrowband filter plate are fixedly arranged in a direction which is in parallel with an excitation light source; the excitation light source, the object to be imaged, the CCD camera and the narrowband filter plate are arranged on a same straight line; the X-ray emitter and the detector are arranged on a direction which is vertical to the excitation light source; the X-ray emitter, the object to be imaged and the X-ray detector are arranged on a same straight line; and the computer is connected with the CCD camera, the X-ray emitter and the electric control rotary table. According to the method, the multi-modal information fusion of an in vivo small animal is realized, and the method has the advantages of simple operation process and short data acquisition time.

The invention relates to the technical field of intelligent driving, in particular to a multi-vehicle collaborative mapping method applied to automatic driving. The multi-vehicle collaborative mappingmethod applied to automatic driving comprises the following steps of step 1, data collection and perception; step 2, preprocessing of point cloud data; step 3, a local map and a global map; step 4, acommunication module; step 5, matching between two vehicles; step 6, after matching succeeds, sending a matching result to the opposite side by each vehicle; and step 7, after each vehicle receives aglobal edge map and trajectory data of the opposite side which are continuously sent by the opposite side, converting data through a matrix obtained by calculation in step 5 and then transferring a result to mileage calculation and mapping part to perform real-time collaborative mapping.

The invention discloses an under-actuated unmanned ship target enclosing controller structure and a design method. The structure comprises a position calculation unit, a speed observer, a fuzzy approximator, a distance controller, a heading controller and a dynamic controller. The position calculation unit receives the unmanned ship state inforamtion and the target relative position information. The speed observer receives the unmanned ship speed information. The distance controller receives a given surrounding distance. The dynamic controller is connected with a controlled under-actuated unmanned ship and the fuzzy approximator. The fuzzy approximator receives the unmanned ship state information. The structure realizes the enclosure control of the unmanned ship over a time-varying speed target. The controller can estimate the relative dynamic information by using the unmanned ship state information and the target relative position information, and designs a control rate based on a backstepping method. The controller can achieve target enclosing control only by using an angular velocity signal. Thus, the structure is suitable for both full-actuated unmanned ships and under-actuatedunmanned ships.

The invention relates to a self-balancing loading device for batch concrete-filled steel tubes. The self-balancing device comprises a reaction frame, a jack, an upper cover plate, a lower cover plate and a steel tube for allowing concrete pouring, wherein a sliding trolley is arranged above a reaction frame cross beam, and the jack, the upper cover plate, a pressure sensor, the steel tube, the lower cover plate and a bottom plate located on the concrete ground are sequentially arranged below the reaction frame cross beam; the steel tube is clamped between the upper cover plate and the lower cover plate through four double-headed thread pull rods, the steel tube subjected to concrete pouring is pressurized by the jack, nuts on the four double-headed thread pull rods are tightened, so that the concrete-filled steel tube is still continuously loaded after pressure release of the jack, and then the jack is transferred to another position through the sliding trolley for loading of the next steel tube requiring concrete pouring; the steel tube loading device belongs to an inner self-balancing system and does not need external force for maintenance, batch loading of the concrete-filled steel tubes can be realized through sliding of the trolley on the reaction frame cross steel beam, and the device is simple in structure and convenient to manufacture.

The present invention discloses a control device of full-automatic constant flow capacity ultrafiltration water treatment. It is characterized by that said invention utilizes water inlet pressure transmitter, dense water pressure transmitter, pressure transmitter and water outlet flow rate sensor and makes them be resectively connected with analog input module; utilizes water-feeding pump and reverse washing pump and makes them be connected with analog input / output module by means of frequency converter; utilizes water intake flow rate sensor and makes it be connected with analog input / output module; makes the analog input module and analog input / output module be connected with programmable controller and makes the programmable controller be connected with 8 electromagnetic valves so as to implement constant flow capacity full-automatic operation and control of said water treatment system.

The invention discloses an intelligent port marine environment real-time monitoring system mainly comprising a shore system, an energy and data transmission system and an underwater observation platform. The monitoring system carries out 220V alternating-current voltage transmission and data interaction by using a submarine cable based on a power carrier technology, realizes acquisition, processing and control of diverse data as well as simultaneous real-time observation of conventional submarine environmental factors and submarine video, and realizes on-line and wireless real-time observation via network communication modules integrating communication modules of 4G, TCP / TP, Beidou satellite and the like; simultaneously, special cables are not needed, and the existing power line can be directly transformed, so that the construction and transformation costs are reduced, grid-connection usage is facilitated, a monitoring and command system capable of fusing marine environment data to a port in real time is provided for pilots, and simultaneously, long-term observation can also be realized at an island and other places via an integrated generator set and a new energy generator.

The invention discloses a system for digital holographic imaging. Light emitted by a laser is collimated to a parallel beam through a beam expanding collimation unit. The parallel beam is divided into two beams. One beam is reflected by a reflector, and forms reference light through a second beam splitter. The other beam passes through a to-be-tested sample, and is reflected to a spatial light modulator to be modulated by a third beam splitter, and then a modulated light beam passes through the third beam splitter and is reflected by a second beam splitter, and then object light is formed. Interference occurs on the surface of an image sensor by the reference light and the object light, and a hologram is generated. The image sensor and the spatial light modulator respectively connect with a computer. The spatial light modulator loads a plurality of different sampling matrixes in sequence in exposure time of the hologram. Each sampling matrix is respectively used to modulate object light in each sampling time period. The invention also discloses a digital holographic imaging method. The system and the method for digital holographic imaging can realize real-time observation of a dynamic process under the condition of not increasing complexity level of an experimental system.

The invention discloses a method and system for nanometer optical coherence tomography (OCT) imaging based on broadband stimulated radiation. A chromophore positioned in an excited state is caused to quickly return to a ground state by utilizing the stimulated radiation rather than spontaneous radiation, and a broadband detection light source is adopted to achieve coherent detection of stimulated radiation fluorescence signals. The improvement of axial and transverse resolutions is achieved through a broadband light source technology and a stimulated radiation loss technology respectively. An ultra-broadband light source is adopted to serve as a detection light source, and the axial resolution from a submicron grade to a hundred-nanometer grade can be achieved. The nanoscale transverse resolution can be achieved by adopting a point spread function regulation technology based on stimulated radiation loss. Compared with conventional fluorescence imaging, according to the imaging method, the imaging speed can be greatly improved. According to the method and system for nanometer OCT imaging based on broadband stimulated radiation, not only is the nanometer resolution of the OCT imaging achieved, but also a fluorescence imaging function of the OCT is expanded, and the method is provided for optical imaging of the non-fluorescent chromophore.

The invention provides a non-rotary optical rotation solution gauge and a method for measuring the specific rotation of optical rotation solution through the gauge, relates to a method for measuring the optical rotation solution, and solves the problem that the conventional instrument for measuring the optical rotation material requires that an analyzer is continuously rotated when the specific rotation of the solution is measured to confirm the rotating angle of a vibrating surface of the optical rotation solution. The method comprises the following steps: utilizing light beams emitted by a light source element to be incident to a polarizer; enabling linearly polarized light polarized by the polarizer to be incident to a test tube filled with optical rotation solution; enabling the linearly polarized light passing by the test tube filled with optical rotation solution to be incident to a polarization displaying device; enabling the linearly polarized light displayed by the polarization displaying device to be incident to a light sensing surface of an image collecting device; sending image information collected by the image collecting device to a PC; calculating the difference value of the polarization direction of light beams in light beam information obtained after the solution to be measured is measured and the polarization direction of light beams in light beam information obtained through a solution not measured through the PC, so as to obtain the optical rotation theta of the solution to be measured; finally obtaining the specific rotation of the solution to be measured. According to the invention, the gauge and the method can be used for measuring the optical rotation solution.

The invention relates to the technical field of soil humidity measurement, and in particular relates to a device for measuring the surface domain soil humidity based on global navigation satellite system-reflection (GNSS-R). The device comprises a case; the case is internally provided with a GNSS reflected signal receiving antenna, a GNSS direct signal receiving antenna and a GNSS-R soil humidity measurement mainframe; the GNSS-R soil humidity measurement mainframe is fixed by a bracket I; the device is compact in structure and convenient to use, and is capable of integrating signal receiving processing, soil humidity inversion and humidity data transmission. The invention also provides a method for measuring the soil humidity; the method comprises the steps of carrying out partition on the area covered by the GNSS reflected signal receiving antenna according to different code delay by adopting an ICF specific value calculation method; carrying out weighted summation on the related power corresponding to the area according to partition size, then estimating the soil surface reflectivity, and calculating the dielectric constant of the soil to obtain a stable and reliable soil humidity measurement result; finally, transmitting the soil humidity data in real time by a 3G technology to realize real-time observation for the measurement result.

The invention belongs to the technical field of micro-chemical engineering and particularly discloses a microreactor adopting a metal and transparent plastic composite structure and an application of the microreactor. Transparent plastic is used above an absorption-reaction microchannel to serve as an upper sealing plate in the microreactor, the upper sealing plate is a window of the microreactor, grooves are engraved in the periphery of the absorption-reaction microchannel, and sealing pads are embedded in the grooves for sealing and prevent liquids from leaking between plates; the microreactor is also provided with a heat exchange channel below the absorption-reaction microchannel, and the rest structures except the window are made of heat conductive metal materials. The metal and transparent plastic composite structure is adopted, fluid flowing or reaction conditions in the uniform temperature field (temperature difference smaller than 0.5 DEG C) in the microreactor can be observed in real time, the fluid behavior in the microreactor can be studied, and flowing, reaction and heat transfer performance in the microchannel can be further studied.

The invention relates to a rapid detection card for detecting pesticide residues, a preparation method and application thereof. The fast detection card comprises a coverage film, a first plastic board, sample loading holes, an enzyme tablet, a plastic film, a second plastic board and a substrate sheet, wherein the coverage film is adhered to the surface of the first plastic board; at least two sample loading holes are formed in the first plastic board; the enzyme tablet fixed with housefly acetylcholinesterase is adhered to the reverse sides of the sample loading holes and is opposite to the sample loading holes; the substrate sheet, which is fixed with acetyl indophenol and is adhered to the position corresponding to the enzyme tablet, is arranged on the second plastic board; and the plastic film is arranged in the middles of the first plastic board and the second plastic board. In the rapid detection card, enzyme is the housefly acetylcholinesterase which is subjected to molecular evolution, so the rapid detection card has the advantages of high activity, high sensitivity, high stability and the like and can be applied to the rapid detection of organophosphorus and carbamic acid ester pesticide residues in agricultural products, food and soil and particularly vegetables, fruits.

The invention provides a submicron-precision multi-pin direct writing type 3D printer comprising material cylinders, a nanoscale-locating-precision three-axis platform, a glue dispensing machine and aprinting platform. Print pins are arranged at the front ends of the material cylinders. The glue dispensing machine is connected with the material cylinders through gas pipes. The nanoscale-locating-precision three-axis platform comprises a X-axis displacement platform, a Y-axis displacement platform and Z-axis displacement platforms. The X-axis displacement platform and the Y-axis displacementplatform are used for adjusting the position of a print platform. The material cylinders are installed on the Z-axis displacement platforms and can move up and down along with the Z axis. Imaging systems following the filament discharging process and printing process of submicron-scale printing pins are arranged above the material cylinders on the Z-axis displacement platforms. Each imaging systemcomprises a CMOS camera, a telecentric lens and an objective lens. Compared with the prior art, the submicron-precision multi-pin direct writing type 3D printer adopts capillary glass micro-pins as printing pins and combines the nanoscale-precision locating platform, the multi-material-cylinder structure, a laser calibrator and the imaging systems, so that high-precision multi-material printing can be achieved.

The invention discloses an online life prediction method for a lithium battery based on data fusion and an ARIMA model. The method comprises the following steps: 1, collecting equal-voltage discharge,charging time interval and battery capacity data of the lithium battery; 2, calculating the fusion weight of a data layer and fusing the data; 3, training and estimating parameters of the ARIMA modeland checking the ARIMA model; 4, predicting RUL and next-period SOH through the ARIMA model according to the data fused in the step 2; and 5, inputting battery state observation data acquired onlinein real time, repeating the steps 2 to 4, and updating the ARIMA prediction model to realize online prediction. According to the method, the service life of the lithium battery is predicted online based on data fusion and the ARIMA model, the service life is predicted more precisely, an online service life prediction function of the lithium battery is realized, and the reliability of the lithium battery of a spacecraft is analyzed.

The invention discloses a self-adaptive current control system for inhibiting system high-frequency oscillation. The self-adaptive current control system comprises three main parts of dual-PI control under conventional rotational coordinates, a harmonic wave online detection link, special frequency band gain adjustment of a current loop, and the like. The value of amplitude of a harmonic component is obtained by detecting current waveform, during operation, of a filter capacitor of the grid-connected inverter in real time and analyzing harmonic wave components in the waveform; and when the detected value of amplitude of the harmonic component is greater than a set threshold value, the gain, at the harmonic wave frequency, of a current controller is inhibited by regulating a wave trap corresponding to the output end of the current controller, thereby preventing the grid-connected inverter from interacting with the system at the frequency point, and amplifying the harmonic waves. According to the control method disclosed by the invention, under different power grid harmonic oscillation environments, the automatic adjustment for the gain, at the harmonic oscillation frequency point, of the current controller can be realized, thereby improving the stable operation capacity of the grid-connected inverter.

The invention relates to a novel telescopic power transmission line inspection device comprising a telescopic rod made of an insulating material. A handle is connected to the bottom of the telescopic rod; and a battery is arranged inside the handle. An illumination lamp is arranged on the top of the telescopic rod; a mounting ring is fixedly arranged below the illumination lamp; a mounting seat is arranged on the outer side of the mounting ring; and a camera is connected to the mounting seat in a threaded mode. A mounting sleeve is arranged on the bottom of the telescopic rod and is connected to the telescopic rod in threaded connection. An upper limiting ring fixedly connected with the telescopic rod is arranged above the mounting sleeve; and a lower limiting ring fixedly connected with the telescopic rod is arranged below the mounting sleeve. A display device connected with the camera is arranged on the mounting sleeve. The display device, the camera, and the illumination lamp are connected with the battery electrically. Provided in the invention is a novel telescopic power transmission line inspection device.

The invention relates to a satellite-ground link chromatography vertical cloud field system and method based on a ground antenna array. The system comprises a satellite receiving antenna, a satellite receiver, a synchronous control module, an Internet of Things information transmission module, a cloud processing computing platform and a display platform. The satellite receiving antenna is used for tracking and receiving a downlink signal of a polar orbit satellite and collecting the signal strength and the signal quality of the downlink signal; the satellite receiving antenna and the satellite receiver jointly form a satellite receiving device; the synchronous control module is used for controlling azimuth angles and elevation angles of satellite receiving antennas; the Internet of Things information transmission module is used for transmitting the signal intensity and the signal quality acquired by the satellite receiving antenna to the cloud processing computing platform; the cloud processing computing platform is used for performing time sequence matching, preprocessing and inversion computing on the multiple satellite signals to obtain cloud field information; and the display platform is used for performing three-dimensional visual display on the vertical distribution of the cloud field. The chromatography vertical cloud field is scanned through a plurality of satellite-ground links to realize high-resolution reconstruction of the vertical distribution of the atmospheric cloud field.

The invention discloses a rotation illumination-based surface wave imaging system. The rotation illumination-based surface wave imaging system comprises an oil-immersed microscope objective (1), a beam splitter (2), an imaging pipe lens (3), an image surface detector (4), an objective back focal plane scanning galvanometer (5), a polarization modulation device (6), a polarization separation device(7) and a surface wave imaging substrate (8), wherein a surface wave such as surface plasmon resonance or Marc Bloch surface wave can be effectively constrained on a surface of a substrate and is very sensitive to environmental change, the surface wave is simulated by laser to act with a surface sample by the objective, the signal-to-noise ratio is improved by the polarization separation device,and trailing brought by imaging after the surface wave acts on the sample is eliminated by a galvanometer scanning system. The device initially uses rotation illumination to improve the signal-to-noise ratio and the resolution of micro imaging of the surface wave, and a multi-layer dielectric film photonic band gap structure is initially used for performing micro imaging of the surface wave.

The invention discloses a solid-solid phase transition rate measurement device and method for a solid material, which can measure weak phase transition rate under a small quantity of weak reactions and perform measurement and analysis on fast phase transition rate. The solid-solid phase transition rate measurement device disclosed by the invention comprises a vacuum heating chamber, wherein the vacuum heating chamber is connected with a gas source device, a sample heating table is arranged in the vacuum heating chamber, the sample heating table is connected with a heating temperature control mechanism, a glass window for enabling an infrared thermal imaging instrument to measure is formed at the top of the vacuum heating chamber, and the high-resolution and high-speed infrared thermal imaging instrument is arranged outside the glass window. By using the solid-solid phase transition rate measurement device and method disclosed by the invention, the change in phase transition rate in the whole transition process can be measured, and the real-time observation of the phase transition process can be realized.

The invention relates to a special pressure filter used for oil fractionation and a fractionation process thereof, and the filter comprises a pressure filter frame, a filter system is positioned between the pressure strip and the thrush strip in the frame, the fluid outlet of a reverse flowing system is communicated with the fluid inlets at the upper part and the middle part of the pressure strip, the fluid outlets at the upper part and the middle part of the pressure strip are respectively communicated with the fluid inlet holes of the filter system, the fluid outlets of a diaphragm pressing system are respectively communicated with the pressing cavities of a plurality of diaphragm filter plates in the filter system by flexible pipes, the fluid outlet of a washing system is communicated with the fluid inlet of the thrust strip, the fluid outlet in the thrust strip is communicated with the fluid inlet hole of the filter system, and the fluid inlets of a system of the open stream converting to dark stream are respectively communicated with the fluid outlets at the side parts of a plurality of diaphragm filter plates in the filter system by flexible pipes.

The invention provides a microfluidic technology-based fluid flow simulation experiment device and method. Micro-nano channel models with different characteristics are designed aiming at pore throat characteristics and pore throat scale characteristics of real oil reservoir rock. A migration process and the distribution state of fluid flowing in the micro-nano channel model are observed, recordedand quantitatively analyzed in real time; flow characteristic research when different fluids pass through the micro-nano channel model is realized, so that the micro-nano channel fluid flow simulationexperiment device based on the micro-fluidic technology has the effects of high simulation of real rock pore throat characteristics, accurate measurement data, flexible and repeatable operation and microcosmic visualization.

The present invention relates to a visible puncture outfit for curing stress incontinence by using vaginal suspension. It mainly includes the following several components: main lens body, main lens cylinder, eyepiece cover with eyepiece glass, objective glass, light beam connecting tube, image rod, optical lens, water-feeding channel, water-returning channel, water-feeding valve and water-returning valve. Said invention also provides its working principle and its concrete operation method.

The invention discloses a device for detecting physical properties of a micro-nano-scale substance. The device comprises a support frame, a high-precision positioning platform and a focusing device. The support frame is composed of an upper support plate and a lower support plate. The high-precision positioning platform is composed of a three degree-of-freedom nano-precision displacement table anda two degree-of-freedom micron-precision displacement table. The three degree-of-freedom nano-precision displacement table and the two degree-of-freedom micron-precision displacement table are orderly arranged above the support plate. The nano-precision displacement table is provided with a sample stage. The top of the upper support plate is provided with a triangular mounting plate through a connection rod. The triangular mounting plate is provided with a probe lifting motor and a probe holder. The probe holder clamps a probe. A focusing device includes a microscope tube, a focusing motor, aCCD video sensor and an objective lens. The objective lens and the CCD video sensor are mounted on the microscope tube. The microscope tube is mounted on the focusing motor. The lower support plate is equipped with a two degree-of-freedom coarse adjustment displacement table. The focusing motor is installed on the coarse adjustment displacement table.

The invention belongs to the technical fields of cell biology and molecular biology, and relates to a biological probe designed and prepared according to a basic principle of FRET (fluorescence resonance energy transfer) and capable of detecting the activity of a RhoGDIalpha (Rho GDP dissociation inhibitor alpha) protein in a living cell. The probe is a fusion protein structure, and comprises five parts, i.e. an FRET fluorescent protein pair ECFP and Ypet, a RhoGDIalpha full-length sequence, a substrate structure domain switch II of RhoGDIalpha and an intermediate linker sequence. According to the biological probe, the fusion protein structure of the probe can be independently expressed by a cell after a fusion plasmid is transferred into the living cell, so that a probe function is realized in the cell; the biological probe has the characteristics of being high in specificity, low in cost, free of side effects on the cell and the like.

The invention provides a laying device and method for a seabed horizontal direction sensor array. The device comprises a device main frame; four horizontal sensor array belt supporting plates are arranged on the outer sides of the four vertical faces of the main frame, sensor array belts are arranged on the sensor array belt supporting plates and bound and fixed through fixing cables, and slidingrings at the ends of the cables are connected in series through electrochemical fuse wires. The sensor array belt comprises a water hose for providing unfolding power and a plurality of combined sensors, and a temperature sensor, a pressure sensor, a sensor signal conversion circuit board, an acceleration sensor and a conductivity sensor are sequentially installed in each combined sensor. According to the technical scheme of the invention, the device for automatically distributing the sensor array is researched and developed for the first time for the work of distributing the sensors in meter-scale distance within a hundred meters range of the surface of the seabed. The whole set of system can realize long-time real-time observation of observation data, and publish related early warning information. An underwater robot does not need to be rented, equipment rental and personnel employment expenses are saved, and ship hours are effectively saved.

The invention discloses a shipboard aircraft cluster motion modeling simulation method. The method comprises the following steps of: motion solution space construction: establishing a motion solutionspace of a shipboard aircraft cluster; motion modeling: establishing a motion control model of the shipboard aircraft cluster; and motion simulation: inputting parameters required for simulating motion of the shipboard aircraft cluster on the basis of the motion solution space and the motion control model, and carrying out shipboard aircraft clyster motion simulation. Through the shipboard aircraft cluster motion modeling simulation method, effective motion solution spaces and motion control models can be provided for motion simulation of shipboard aircraft clusters, so that motion laws of theshipboard aircraft clusters can be researched under various simulation conditions. The method is capable of better simulating rising / landing and cruising behaviors of the shipboard aircraft clustersunder various environments, so as to observe operation data of shipboard aircrafts in real time and provide comprehensive simulation data for real large-scale shipboard aircraft cluster flight experiments.

The invention provides a new multiband passive synthetic aperture imaging system. Spatial frequency sampling coverage of the imaging system is greatly improved by a multiband technology, thereby realizing high-resolution and high-quality imaging in real time while working in a radio-frequency microwave band. In the invention, signals radiated and scattered by a target are received by a multiband antenna array, and enters an array receiver; the signals are mixed with local oscillation signals output by an ultra wideband tunable YIG (yttrium iron garnet) oscillator; the mixed output signals are filtered to acquire intermediate frequency signals; the intermediate frequency signals are output after intermediate frequency amplification; and finally, after passing through an analog-to-digital conversion acquisition card, the signals are input into a signal processor for carrying out pairwise correlation calculation to acquire spatial frequency sampling of a field of view. By tuning the YIG oscillator by using the multiband antenna array, visibility functions of different frequency bands can be acquired, thereby greatly improving the coverage effect of target spatial frequency sampling and the imaging quality.

The invention discloses a front protection control method, comprising the following steps: transmitting an image of a target object shot by a first projection device to a projector for projection to form a projection area; detecting the operation of a specific gesture on the projection area according to the image of a projection area shot by a second projection device, when the projection area is operated by the specific gesture, generating a first detection signal; retrieving a plurality of symbols to the projector for projection so as to form a plurality of control panels of the control symbols in the projection area according to the first detection signal; detecting the operation of the control symbols according to the image of the control panel shot by a third projection device; and when the control symbols are operated, generating a second detection signal corresponding to the operated control symbol; and carrying out corresponding control movement on the first projection device, the second projection device, the third projection device or the projector according to the second detection signal. The invention also provides a front projection control system; and by utilizing the front projection control system and method thereof, the projection of the target object can be flexibly controlled.