59results about How to "Reduce calibration time" patented technology

The invention relates to the technical field of photoelectric detection and radars, in particular to a calibration method, system and device for a radar and a laser anti-collision device and a medium, and aims to track and lock the same dynamic non-cooperative target through the laser anti-collision device and the phased array radar. Synchronously acquiring spherical coordinate observation data of the dynamic targets in the public view field under respective coordinate systems; and after the spherical coordinates are converted into rectangular coordinates, calculating a point set centroid, constructing a covariance matrix and performing singular value decomposition based on a rigid body transformation model, and directly solving a rotation matrix and a translation vector from a radar coordinate system to a laser anti-equipment-free coordinate system, thereby completing calibration. No external absolute coordinate reference is needed, only relative observation data of equipment is utilized, and the method has the advantages of being rapid in deployment, high in environmental adaptability, low in cost and high in calibration speed. The problems that in the prior art, a calibration system depends on RTK or a high-precision map, the environmental adaptability is poor, and the deployment requirement is high are solved.

The utility model discloses a calibration test fixing device for an atmosphere data computer, which is characterized in that two sides of an upper cover plate and a lower cover plate are respectively supported by a right side plate and a left side plate to form a frame structure, at least three groups of slots are symmetrically arranged on opposite surfaces of the right side plate and the left side plate, the slots are horizontally arranged, and one end of each slot is provided with an opening for inserting a support plate; one end of each slot is open, the other end of each slot is sealed, a supporting plate is selectively inserted into each pair of slots, the supporting plates are used for placing an atmosphere data computer, and the atmosphere data computer is connected with external equipment through a test cable. The device can effectively and absolutely safely lock equipment, has enough bearing and protecting capabilities, is matched with a guide rail structure, locks a hardware plate, stably locks the equipment in a test fixing device, supports multi-equipment access test calibration, greatly saves equipment calibration test cost, reduces calibration time, and improves test efficiency. And the space utilization in the testing process can be increased.

The application discloses a receiver direct current offset calibration method, equipment, a storage medium and a program product, relates to the field of radio frequency communication technology, and discloses a method, which comprises the following steps: detecting a direct current component in a signal received by a receiver through an analog-to-digital converter; determining a calibration mode according to a calibration method defined by a user; if the calibration mode is offline calibration, calculating a current compensation coefficient through a foreground calibration mode by using an adaptive algorithm, and if the calibration mode is online calibration, using a background calibration mode; obtaining a compensation signal after compensation of a direct current offset through a direct current offset signal and the current compensation coefficient; updating the compensation coefficient of a next clock cycle through an adaptive algorithm iteration coefficient and the compensation signal; determining a final compensation coefficient according to the iteration compensation coefficient of an internal counter of the adaptive algorithm, and outputting a calibration signal after calibration of the direct current offset. The application effectively reduces the system complexity through a compensation module and an adaptive algorithm to calibrate the direct current offset of the receiver and reduces the calibration time.

The invention relates to the field of metro station air conditioning system energy consumption prediction, and discloses a self-correcting metro station air conditioning energy consumption simulation system and method.The simulation system comprises a main cause analysis module and a self-correcting module, and the self-correcting module establishes a corresponding energy consumption simulation model and optimizes the energy consumption simulation model; the main cause analysis module comprises a data acquisition module and a data analysis module; the self-correction module comprises a model building module and an optimization module. The invention further discloses a simulation method based on the system, principal component analysis is performed on measured data of the subway station air conditioner system, an optimization algorithm is utilized to automatically correct an energy consumption simulation model, and the corrected energy consumption simulation model is applied to the subway station air conditioner control system. Therefore, the energy efficiency of the air-conditioning system of the subway station is quickly and accurately predicted, and efficient and low-consumption operation of the air-conditioning system is improved.

The invention discloses a photoelectric sensor system conversion efficiency calibration system and method based on a reverberation chamber, and belongs to the technical field of photoelectric sensor conversion efficiency calibration, the system comprises an electric wave reverberation chamber, a transmitting antenna, a reference antenna and a photoelectric field sensor system; the photoelectric field sensor system is composed of a photoelectric sensor, a laser source, a photoelectric detector, a polarization maintaining optical fiber and a single-mode optical fiber. In the calibration process, the reference antenna and the photoelectric sensor system are used as receiving ends respectively, receiving power at different stirring positions in the reverberation chamber is sampled to obtain two groups of transfer functions, and the total efficiency of the photoelectric sensor system is determined by comparing the two groups of transfer functions under the condition that the radiation efficiency of the reference antenna is known. The conversion efficiency of the photoelectric sensor system is obtained by combining the relation among the power, the field intensity and the total efficiency in the free space; and the effective averaging of the incident direction and the polarization state is realized by using the uniform and isotropic electromagnetic field characteristics of the reverberation chamber.

The utility model belongs to the technical field of calibration, and discloses a calibration device for a magnetic compass, which comprises a calibration mechanism comprising a rotating platform for driving the magnetic compass to rotate horizontally, a magnet assembly, and four groups of upright guide rails which are respectively positioned on the periphery of the rotating platform, a magnet block capable of sliding along the vertical direction of the vertical guide rail is arranged on the vertical guide rail; compared with the prior art, the magnetic compass has the following beneficial effects that through the design of the magnet assembly, when the magnetic compass rotates on the rotating platform, the height is adjusted by enabling the peripheral magnet blocks to slide up and down along the vertical guide rail, so that the height of the magnetic compass can be adjusted according to the autodyne condition when the magnetic compass rotates to different directions on the rotating platform; and the magnetic field action intensity between the magnet block and the magnetic compass is adjusted. Therefore, the autodyne of the magnetic compass can be corrected in a targeted manner, the calibration precision is improved, the operation of the sliding adjustment mode is more convenient, the time and labor cost required by calibration are reduced, and the working efficiency is improved.

Embodiments of the present application provide a data verification method and device, electronic equipment and a readable storage medium, relating to the technical field of data processing. After obtaining the to-be-verified data and the data identifier of the to-be-verified data, the data identifier is used to search for the template identifier associated with the data identifier in a preset rule association table, the rule template of the to-be-verified data is determined according to the template identifier, the target rule is generated according to the rule template, and the to-be-verified data is verified according to the target rule. In this way, the target rule is generated through the rule template, the rule configuration operation is simplified, the verification time is saved, and the efficiency is improved.

The invention discloses a D wave band frequency expansion device system for a channel simulator and a calibration method, the D wave band frequency expansion device system comprises a low-frequency channel simulator, a local oscillator distributor, a D wave band transmitting link, a D wave band receiving link and a D wave band waveguide bi-directional coupler, and the system supports terahertz frequency band spread spectrum and calibration functions of the low-frequency channel simulator. A local oscillator distributor is adopted to ensure phase synchronization of an uplink and a downlink, and receiving and transmitting isolation of the same physical channel is realized through a waveguide bi-directional coupler, so that uplink and downlink full duplex testing of communication equipment is realized. Calibration of the whole system is completed by the low-frequency channel simulator and the frequency expansion device together, and compensation of nonlinearity, amplitude-frequency and local oscillation leakage of D-band signals can be achieved by adopting the calibration method. Compared with the prior art, the device can realize accurate simulation of a D-band full-band channel and full-duplex transceiving performance verification, and provides more reliable technical support for test and verification of high-band wireless communication.

The intelligent automobile lane-changing decision method and device, the electronic device and the storage medium provided by the embodiments of the present disclosure comprise: constructing a virtual lane-changing scene by using a simulation method; constructing a decision model for determining a mapping function between a state and a reward, obtaining a Q table for evaluating the lane-changing feasibility of an intelligent automobile based on the mapping function, and obtaining a lane-changing decision, i.e., "lane-changing" or "not lane-changing"; based on a greedy algorithm, making the intelligent automobile produce a random lane-changing behavior in the constructed virtual lane-changing scene, storing the state and the reward of the current lane-changing behavior in an experience replay pool, when the number of state-reward pairs in the experience replay pool reaches a minimum sample number, randomly sampling a plurality of state-reward pairs from the experience replay pool for single-step training of the decision model, storing a new state-reward pair generated in the training process in the experience replay pool, repeatedly performing the above training process until a maximum training number is reached, and obtaining a lane-changing decision model. The lane-changing decision generated by the present disclosure is high in safety and wide in applicability.

This utility model discloses a sewing positioning mechanism for automotive seat cover panels, including a positioning base plate. The positioning base plate has at least one receiving groove for accommodating a lower and upper panel to be sewn. The bottom of the receiving groove has two upward-protruding stepped positioning structures, each including a first column and a second column at the top of the first column. The diameter of the second column is smaller than that of the first column, and the second column is coaxially arranged with the first column, respectively used for positioning and installing clearance holes on the lower and upper panel panels. The circumferential contour of the receiving groove matches the outer contour of the upper panel, and the bottom of the receiving groove has a recessed groove whose circumferential contour matches the outer contour of the lower panel. The beneficial effect of this utility model is that it replaces traditional outer contour positioning with internal feature positioning, thus balancing the accuracy and efficiency of sewing positioning.

The application discloses a kind of five-axis numerical control machine tool in-machine probe automatic calibration method, comprising the following steps: in machine tool outside, to be calibrated probe combination to professional tool shank, and detect the length value of probe relative to tool shank mounting surface and measuring ball head diameter value;Probe is moved to the center of standard ring gauge fixed on machine tool rotary table surface, and this position is set as workpiece coordinate system after;Ring gauge surface is measured to obtain angular value, and after inputting the corresponding parameter table of machine tool workpiece coordinate system, probe radius calibration program is prepared and executed in machine tool operating system;After flattening probe, the highest point of probe side surface measures ring gauge upper surface plane, to obtain Z1 value;After erecting probe, the highest point of probe length direction measures ring gauge plane Z2 value of same point, to obtain probe tool length L=Z2-Z1.The present application can reduce the human participation in calibration process, improve the calibration accuracy of probe, calibration efficiency is higher, operation process is simpler, operation difficulty is smaller, can effectively improve the use efficiency of machine tool.

The invention provides a calibration method and device for a displacement sensor, and relates to the technical field of sensor calibration, and the method comprises the steps: triggering a burner to burn a linear association rule of a magnetic field angle and a duty ratio to a to-be-calibrated displacement sensor in response to a control instruction of a graphical interface; controlling an electric cylinder to drive a push rod to generate full-stroke actual displacement, synchronously acquiring displacement data and a sensor output duty ratio, and determining an association relationship between a magnetic field angle and the actual displacement by combining a linear association rule; generating a calibration point data set based on a calibration relationship formed by the three, burning the calibration relationship and the data set to the Hall chip after displacement difference verification, and complementarily collecting abnormal point data in a nonlinear interval if the calibration relationship and the data set do not pass the displacement difference verification; according to the method, frequent point taking is not needed, the calibration precision and the mass production efficiency are both considered, and the rapid calibration requirement of the double-Hall-chip sensor is met.

The application discloses a kind of phase-locked loop frequency calibration device and method, it is related to the frequency calibration field of phase-locked loop, in which process detector sends frequency control word initial value to automatic frequency calibrator;Automatic frequency calibrator sends reset1=1 to counter according to frequency control word initial value;Phase-locked loop starts locking according to frequency control word initial value;Lock detection circuit detects the phase detection signal output by phase-locked loop after locking, and when phase detection signal is not in variation, output Lock_Done=1;Counter carries out and logic with Lock_Done with reset1, and resets, starts counting;After automatic frequency calibrator counts setting time, according to the read-back instruction of counter and the Fast signal and Slow signal determined by comparator according to the output voltage of phase-locked loop, determine calibration word.The application can reduce the error caused by phase-locked loop frequency calibration process and reduce calibration duration.

The invention discloses a low-duration calibration electroencephalogram decoding method and system based on invariant feature extraction, and relates to the technical field of electroencephalogram signal decoding, and the method comprises the steps: obtaining electroencephalogram data with labels, and carrying out Fourier transform to obtain amplitude information and phase information; inputting the phase information and the tag into a teacher network for training to obtain feature output of the teacher network; performing random pairing and reconstruction on the labeled electroencephalogram data to obtain reconstructed electroencephalogram data, inputting the reconstructed electroencephalogram data into a student network, and learning phase information extracted from a teacher network through the student network to obtain feature output of the student network; and acquiring real-time data, and inputting the real-time data into a student network to obtain an electroencephalogram decoding recognition result. Similarity features among different individuals are extracted through an invariant feature extraction method, when electroencephalogram signals of a new user are analyzed, the similarity features can be directly used for electroencephalogram analysis of a new subject, and the use efficiency of a non-intrusive brain-computer interface and the electroencephalogram recognition accuracy are remarkably improved.

The utility model relates to electronic equipment protection technical field, concretely is a kind of on-line verification device of monitor of ESD on-line monitoring system, it includes host computer and several monitors, host computer is connected with each monitor by communication network communication, test circuit is respectively arranged in each monitor, precision resistance and electronic switch are connected in test circuit, precision resistance is the precision resistance with multiple gear positions, the gear position of precision resistance can be adjusted by electronic switch, test circuit can detect the resistance value of loop resistance, and compare detection value with check threshold value, judge whether monitor check is qualified, and send the judgment result to host computer, if check is unqualified, host computer sends information to maintenance end, and prompts maintenance personnel to monitor and calibrate.The utility model can carry out on-line verification to monitor, avoid the influence of monitor dismounting to production, improve check efficiency, reduce check cost, and guarantee the reliability of monitoring system operation.

The slitting machine comprises a bottom frame and an upper frame, the bottom frame is fixedly connected with a support, the support is movably connected with the upper frame in an inserted mode, one side of the bottom frame is rotationally connected with an adjusting rod, the adjusting rod is connected with the upper frame in a threaded mode, the bottom frame and the upper frame are both fixedly connected with first motors, and the output ends of the first motors are fixedly connected with lead screws. A lead screw is arranged on the upper frame, a sliding block is connected to the lead screw in a threaded mode, a second motor is fixedly connected to one side of the sliding block, a cutting wheel is fixedly connected to the output end of the second motor, first grooves are formed in the bottom frame and the upper frame, identification blocks are arranged in the first grooves in a contact mode, and the identification blocks correspond to the cutting wheel in position. A plurality of groups of lead screws, sliding blocks and cutting wheels which are not coaxial are arranged, the lead screws can be driven to rotate through a first motor, width adjustment among the multiple cutting wheels is achieved, the calibration time is shortened, moving blocks and pressing rollers are arranged on the two sides of the cutting wheels, and the limiting effect on the metal strip during cutting is achieved.

The utility model provides a pressure gauge installation structure free of disassembly in verification, a pressure gauge is installed on a main pipeline of a water pipeline, a quick connector female head is installed on a branch pipeline, the outer wall of the quick connector female head is sleeved with a protection device used for protecting the quick connector female head, and the protection device can protect the quick connector female head from being corroded easily. And dirt is not easy to exist and is prevented from entering a water pipeline and a pressure gauge, so that the water pipeline and the pressure gauge are prevented from being damaged or corroded. When the pressure gauge needs to be verified, only the protection device needs to be opened, the quick connector female head is exposed to be in butt joint with the quick connector male head, the pressure gauge is connected with test equipment through the quick connector female head and the quick connector male head, the pressure gauge is verified, the pressure gauge does not need to be detached for verification, the verification time is saved, and the verification efficiency is improved. And the verification speed is improved.

The invention relates to the technical field of automobile detection, and discloses a method for verifying the authenticity of OBD data, and the method comprises the following steps: S1, building a connection with a vehicle OBD interface through a coding device, and collecting the OBD total data of a vehicle; s2, the encoding device encodes the acquired OBD total data and then transmits the data to a decoding device through a physical and network isolated one-way data ferry system; s3, obtaining a preliminary verification result; s4, the decoding device analyzes the multi-dimensional data features of the OBD total data to obtain a secondary verification result; and S5, outputting an OBD data authenticity judgment conclusion based on the preliminary verification result and the secondary verification result. According to the invention, no physical circuit connection or network connection exists between the encoding device and the decoding device, data can only be unidirectionally transmitted from the encoding device to the decoding device, and risks of data leakage, tampering and network attack caused by dependence on an external network or wired / wireless connection in the prior art are avoided.

The application discloses a multi-channel parallel test system and a self-calibration method for a digital-analog hybrid chip, and relates to the technical field of chip testing. The application discloses a multi-channel parallel test system and a self-calibration method for a digital-analog hybrid chip, and relates to the technical field of chip testing. The application discloses a multi-channel parallel test system and a self-calibration method for a digital-analog hybrid chip, and relates to the technical field of chip testing. The application discloses a multi-channel parallel test system and a self-calibration method for a digital-analog hybrid chip, and relates to the technical field of chip testing. The application discloses a multi-channel parallel test system and a self-calibration method for a digital-analog hybrid chip, and relates to the technical field of chip testing. The application discloses a multi-channel parallel test system and a self-calibration method for a digital-analog hybrid chip, and relates to the technical field of chip testing. The application discloses a multi-channel parallel test system and a self-calibration method for a digital-analog hybrid chip, and relates to the technical field of chip testing. The application discloses a multi-channel parallel test system

The utility model discloses a processing center tool changing positioning and adjusting device, including centering standard part A, centering standard part B, positioning core axle and positioning sleeve, centering standard part A installs on the main shaft, and the centering standard part B is provided with the center through -hole, and is provided with a plurality of buckle sword grooves on the outer circle of centering standard part B, and the centering standard part B is installed on the sword arm through buckle sword groove, and the top cooperation of positioning sleeve is installed in the center through -hole of centering standard part B, and the top of positioning core axle passes through positioning sleeve and is connected with the center through -hole of centering standard part A cooperation. The utility model has the beneficial effects that: through adjusting the position of main shaft in X, Y direction, and then realize the cooperation of positioning sleeve and centering standard part B's installation, thereby realize the adjustment and regulation of tool changing position, therefore, can realize quick, accurate calibration main shaft position precision, shorten the tool changing position calibration time, effectively guarantee the stability and accuracy of tool changing process, and then effectively avoid main shaft damage, mechanical wear and tear problem.

This invention relates to medical X-ray imaging systems, specifically a method for measuring and calibrating a target in a DSA two-dimensional image when it deviates from its isocenter. The method is achieved through the following steps: 1. Under standard alignment or when the target is isocentered on the DSA machine, acquire and record relevant parameters of the target; 2. After the DSA machine rotates or the examination table moves, and the target deviates from its isocenter, acquire the corresponding parameters used when generating the two-dimensional image, including the machine's X-ray source rotation radius, rotation angle, examination table height and position, and the distance between the target and the table surface. Substitute these parameters into a calibration formula to calculate the calibrated X-ray source-target distance; 3. Calculate the estimated magnification using the calibrated X-ray source-target distance and the X-ray source-detector distance used when generating the two-dimensional image, thereby achieving pixel calibration of the two-dimensional image and ultimately achieving accurate measurement of the target.

This application discloses a data transmission method, apparatus, electronic device, and readable storage medium. The method includes: acquiring multiple attribute information of multiple data to be transmitted, wherein the multiple attribute information includes data quantity and data type; determining a target verification rule for the multiple data to be transmitted from multiple preset verification rules based on the multiple attribute information; generating multiple data files and multiple verification files corresponding to the multiple data files based on the data quantity, the target verification rule, and the multiple data to be transmitted; and sending the multiple data files and multiple verification files to a target server based on the number of data files and a first preset quantity threshold. By generating verification files through pre-configured verification rules and uploading the packaged multiple data files and multiple verification files to the target server in a parallel manner, the efficiency of data transmission and data verification is greatly improved.

The invention relates to the technical field of intelligent driving sensors, and particularly discloses a non-common-view-field vehicle-mounted multi-laser-radar external parameter calibration system and method, and the system comprises a calibration site and target devices, the calibration site is a circular area, the target devices are arranged at the periphery of the calibration site, and each target device is of a circular track structure. The circumferential track structure is arranged on the periphery of a calibration site, and a target of a composite structure is arranged on the target device. A vehicle parking area is arranged in a calibration site, a to-be-calibrated vehicle is parked in the vehicle parking area, blind compensation laser radars are installed on the two sides of a vehicle body of the to-be-calibrated vehicle, the blind compensation laser radars are connected with a vehicle-mounted controller through a communication module, and the vehicle-mounted controller is provided with a data acquisition module and a data processing and analyzing module; the multi-view data acquisition mode is completed through the rotating target, more comprehensive and accurate point cloud data can be obtained, the calibration precision of the laser radar in the non-common view field is remarkably improved, the calibration efficiency is improved, and high universality and expansibility are achieved.

The application discloses a kind of industrial robot ball bar instrument grading calibration method based on spherical surface and ball center distance error model, belong to industrial robot precision calibration technical field.The application solves the problems that traditional robot calibration relies on laser tracker, cost is high and operation is complex, and traditional ball bar instrument calibration tolerance range is limited, cannot cover large workspace.This method uses high-precision ball bar instrument to obtain the spatial distance data of end effector under different postures, constructs spherical surface and ball center distance error model, without establishing or measuring robot base coordinate system, and eliminates the influence of tool coordinate system in derivation process, realizes the rapid identification and optimization of robot kinematics parameters;At the same time, a grading calibration strategy is proposed, which gradually expands the measurement range by using ball bar instruments with different rod lengths, and realizes the precision improvement of robot full workspace.The application is simple in operation, low in cost and strong in applicability, can significantly improve the absolute positioning accuracy of industrial robot end effector, and has good engineering application value.

The invention provides an audio device frequency response calibration method and device, a storage medium and electronic equipment, and is applied to the technical field of audio signal processing. The method comprises the following steps: acquiring a first frequency response difference curve of a to-be-tested audio device; according to the first frequency response difference curve, after it is determined that the to-be-tested audio device meets the frequency response calibration condition, a first extreme point in the first frequency response difference curve is identified, and the first extreme point represents the screened to-be-calibrated frequency response difference; on the basis of a preset frequency band division and bandwidth calculation rule, according to the frequency response difference value and the frequency corresponding to the first extreme point, filter parameters corresponding to the audio device to be tested are determined, and the frequency band division and bandwidth calculation rule is preset on the basis of human auditory characteristics and a production line production deviation distribution rule; and designing a filter based on the filter parameter, and calibrating the frequency response of the to-be-tested audio device. According to the invention, the calibration precision is ensured while rapid calibration is realized.

The invention discloses a high-efficiency multi-station converter calibration system based on a serial-to-parallel conversion architecture. The system comprises an upper computer, a power supply module, a code pattern generator, a serial-to-parallel conversion module and a multi-station calibration board, the multi-station calibration plate is provided with a plurality of groups of stations for placing ADC chips to be calibrated, and each group of stations is provided with a reference temperature measurement chip for providing reference temperature for the group of ADC chips to be calibrated; the upper computer is in communication connection with the code pattern generator and is used for controlling the code pattern generator to generate a control signal; the code pattern generator is connected with the serial-to-parallel conversion module and the reference temperature measurement chip through a serial communication interface, and sends a generated control signal to the serial-to-parallel conversion module or the reference temperature measurement chip; and the serial-parallel conversion module is connected with each to-be-calibrated ADC chip on the multi-station calibration plate and is used for converting the received control signal into a parallel control signal so as to configure, read and write the plurality of to-be-calibrated ADC chips at the same time or in a time-sharing manner.

The utility model relates to the technical field of motorcycle instrument detection, in particular to a motorcycle tachometer calibration device which comprises a box body, a dustproof cover plate is movably installed on the box body, an installation platform is detachably installed in the box body, a data calibration mechanism is arranged on the installation platform, and an auxiliary heat dissipation mechanism is arranged in the box body. The data calibration mechanism comprises a signal generation module, a signal acquisition module, a data processing module and a man-machine interaction module, the signal generation module is used for simulating an engine rotating speed signal and providing a high-precision reference signal, and the signal acquisition module is used for capturing an actual output signal of the tachometer. By arranging the data calibration mechanism, the integrated signal generation module, the signal acquisition module and the data processing module, full-automatic rotation speed signal measurement and error analysis are realized, subjective errors of traditional manual calibration can be avoided, the calibration precision can be remarkably improved, the calibration time can be greatly shortened, and the device is suitable for the scene of batch maintenance.

The utility model relates to a synchronous motor checking measuring scale belongs to motor test and control technology technical field, its characterized in that, including stator scale and rotor scale, the stator scale includes main measuring arm, the surface of main measuring arm is provided with main scale rule, the rotor scale includes vice measuring arm, the surface of vice measuring arm is provided with the vice scale rule that cooperates with main scale rule, vice scale rule can slide on vice measuring arm, the inside edge of main measuring arm is connected with the inside edge of vice measuring arm and slides, the bottom of vice measuring arm is provided with the bending part that bends to the outside, the synchronous motor checking measuring scale of the utility model can measure the elevation difference between stator and rotor, have horizontal state measurement and vertical alignment function, the application of this technology not only helps to improve the performance of motor, can also reduce the failure rate significantly, prolong the service life of motor.

The utility model relates to a steel box girder bridge technical field especially a kind of steel box girder bridge installation linear control device including support column, mounting bracket, fixed plate, sleeve frame, friction plate, fixed frame, fixed screw, buckle plate, clamping slot and engaging plate;Support column top end is fixedly connected with mounting bracket, and the upper surface center of mounting bracket is fixedly connected with fixed plate, and two groups of fixed frame for placing the bridge position structure adjusting structure are symmetrically installed in the both sides of fixed plate, and the surface near corner of fixed frame is all equipped with fixed screw for being threadedly connected with fixed plate, which can be freely disassembled after completing operation, and the surface center of fixed frame is fixedly connected with buckle plate for quickly replacing to carry out next step work, and sleeve frame is sleeved on the outside of buckle plate, and the top center of sleeve frame is equipped with friction plate, the utility model realizes by this quick replacement mechanism, so that work in different positions can be quickly switched, and the design of clamping slot and engaging plate enhances the stability of equipment during use, prevents the risk of sliding or falling off.