145results about How to "Realize closed-loop control" patented technology

The invention discloses a voltage compensation method, a voltage compensation circuit and electronic equipment. The voltage compensation method comprises the following steps: acquiring bus voltage in a power switch circuit and energy storage current in an energy storage compensation circuit; obtaining a bus amplitude limiting voltage target value by using the bus voltage target value and the bias adjustment value, and subtracting the bus voltage from the bus amplitude limiting voltage target value to obtain a bus amplitude limiting voltage error value; performing proportional integral operation and amplitude limiting processing on the bus amplitude limiting voltage error value to obtain an energy storage current target value, and subtracting the energy storage current from the energy storage current target value to obtain an energy storage current error value; performing proportional integral operation on the energy storage current error value to obtain a current regulation output value; and a compensation control signal is obtained by using the current regulation output value and is used for triggering the energy storage compensation circuit to change the charging and discharging states, so that the bus voltage is compensated and regulated to a set threshold range. Through the above mode, the voltage compensation method can effectively stabilize the bus voltage within the set threshold range, and the control logic is simple.

This invention relates to the field of pulverized coal conveying and dust removal technology, specifically to a pulverized coal dust removal method, comprising: S1: Constructing a dust removal system: setting up a dust cover on a conveyor belt, setting up a pressure-reducing chamber on the dust cover, installing wear-resistant baffles at the bottom of the dust cover, and installing a dust curtain inside the dust cover; installing a dust collector at the top of the dust cover; S2: Coal conveying and primary dust removal: starting the conveyor belt to transport coal, the coal falls onto the conveyor belt, and the generated dust-laden gas forms a local high-pressure zone under the obstruction of the dust curtain, causing a portion of the dust-laden gas to undergo primary filtration through the filter components on the pressure-reducing chamber; S3: Secondary dust removal: the remaining dust-laden gas in the dust cover is sucked into the dust collector, the dust-laden gas enters below the liquid surface of the dust collector, causing the pulverized coal particles to settle and form coal slurry, which is then transported outside the dust collector, and the purified gas is discharged through the outlet. This method achieves closed-loop control of the entire process from source dust suppression to end-of-pipe treatment through two-stage synergistic dust removal, improving the dust removal effect.

The utility model relates to the technical field of numerical control lathe fixtures, in particular to a numerical control lathe accurate positioning fixture for musical instrument production, which comprises a base and connecting rods, a support plate is rotatably connected onto the base, a placing plate is connected onto the support plate, a plurality of mounting plates are mounted on the support plate, and two ends of each connecting rod are rotatably connected with the mounting plates. The four connecting rods are connected with extrusion blocks, bevel gear sets are arranged at the ends of the four connecting rods, the extrusion blocks are slidably connected into the containing plate, a motor is mounted on the mounting plate, one ends of the connecting rods at the front end and the rear end are connected with an output shaft of the motor, and the other ends of the connecting rods are in transmission connection with the connecting rods at the left end and the right end through the bevel gear sets. The connecting rods are driven by the motor to rotate and matched with the bevel gear set to enable the four connecting rods to synchronously drive the extrusion block to move towards the center, pressure values in all directions are detected in real time through the pressure sensor, driving is automatically cut off based on threshold judgment by the controller, closed-loop control over clamping force is achieved, self-centering clamping is completed, and the clamping efficiency is improved.

The invention relates to the technical field of facility agriculture and micro-grid cooperative control, and particularly discloses a greenhouse micro-grid dynamic scheduling and photosynthetic efficiency cooperative optimization control method and system. The method comprises the following steps: constructing an energy management scheduling model with maximization of accumulated net photosynthetic products of crops in a scheduling period and minimization of net energy cost of a micro-grid as a collaborative optimization target; collecting real-time environment parameter data in the greenhouse and operation data of a micro-grid wind and light storage system and a load; a multi-objective optimization algorithm is adopted to solve the model online, and a joint optimization strategy including a micro-grid dynamic scheduling instruction and a greenhouse environment coordination control instruction is output; and executing the joint optimization strategy, and dynamically regulating and controlling the power output distribution of the micro-grid, the energy storage charging and discharging state and the operation process of the environment regulation and control equipment. According to the method, the multi-target collaborative optimization model with'photosynthetic product accumulation maximization 'and'net energy cost minimization' as the core is constructed, so that comprehensive maximization of energy benefits and agricultural production benefits is realized.

This invention discloses a method for constant temperature and humidity control of a cigar cabinet based on a fuzzy control algorithm, comprising the following steps: setting a target temperature and humidity range; collecting environmental data of each layer through a distributed sensor array and comparing it with the target range to obtain the temperature and humidity deviation of each layer; inputting the deviation into a temperature and humidity decoupling control module and outputting a weight adjustment signal; inputting the weight adjustment signal into a fuzzy controller to construct a multi-objective fitness function, optimizing it with the WFPSO algorithm, and outputting hierarchical fuzzy controller parameters; inputting the hierarchical fuzzy controller parameters into a hierarchical temperature and humidity model to monitor the status of each layer in real time, and outputting a drive command when the limit is exceeded; inputting the drive command and hierarchical parameters into an actuator, adjusting it, and outputting new environmental data; and using a feedforward control module to adjust in advance when a door opening / closing disturbance warning is issued, dynamically adjusting the status of the affected space layer. This invention improves the temperature and humidity control accuracy and disturbance adaptability of the cigar cabinet through hierarchical optimization and feedforward intervention control mechanisms.

The application relates to the technical field of semiconductor detection, and provides a semiconductor wafer film thickness detection method, device and system. The method comprises the following steps: in a transmitting light path, an incident light beam is transmitted to a wafer surface in a semiconductor reaction cavity; in a main receiving light path, a main channel signal reflected by the wafer surface is acquired, the main receiving light path and the transmitting light path form a confocal relationship at the wafer surface; the light signal in the main receiving light path is subjected to spatial filtering processing, the reflected light from the wafer surface is selectively passed, and the out-of-focus light scattered by aerosol in the semiconductor reaction cavity or from a liquid bead on an observation window is blocked; N auxiliary detection light paths are used to acquire corresponding N auxiliary channel signals; the relative intensity ratios of the channel signals are calculated, the optical characteristics of different interference sources are identified, the interference background is separated, and the film thickness of the wafer surface is calculated. The application is used for realizing in-situ real-time film thickness detection in a high-interference process environment such as Mist CVD.

The invention relates to the technical field of battery heat insulation films, in particular to a hot-pressing vulcanization and film covering all-in-one machine for battery heat insulation films, which comprises a base, a processing box is fixedly mounted on the base, a silica gel frame is placed in the processing box, conveying mechanisms are symmetrically arranged on the inner wall of the processing box, and a film covering mechanism is arranged in the processing box. A pre-pressing mechanism and a vulcanizing mechanism are arranged on the outer side of the processing box, and the upper end of the processing box communicates with a rectangular material pipe used for feeding aerogel pieces. The film laminating mechanism is arranged, a horizontal sliding rail and a driving lead screw are used for driving a sliding platform and a silica gel frame to move synchronously, a rectangular pressing head is driven by an electric telescopic rod to complete jacking, cutting and hot-pressing attaching, the silica gel frame does not need to be stopped in the whole process, it can be guaranteed that a film and a window are accurately aligned, and the efficiency bottleneck of a traditional attaching stopping technology is avoided; in addition, cutting and attaching are integrated, the equipment structure is effectively simplified, and the production continuity and the automation degree are improved.

This invention discloses an acidic oxidizing potential water generator and its preparation method for stable water quality control, belonging to the field of disinfection equipment technology. The device is designed with an inlet module, a brine preparation module, a mixing and control module, an electrolysis module, and a control system. Its core lies in employing a high-precision electric proportional control valve and a millisecond-level PID algorithm to achieve constant pressure and constant flow control of the inlet water flow. The brine preparation module uses a solid natural melting structure combined with closed-loop liquid level control, enabling long-term maintenance with a single salt addition lasting for six months. A built-in water quality prediction model based on electrolysis current (fma) is incorporated, using a specific algorithm formula to calculate pH, ORP, and available chlorine content in real time, achieving "soft measurement" and feedforward control of water quality. This solves the problems of high manual operation intensity and raw material concentration fluctuations, ensuring that the effluent water quality stably meets the high standard disinfection requirements of pH 2.5-2.6, ORP 1112-1115mV, and available chlorine 50-55mg / L.

The application relates to the technical field of automobile transmission shaft production, in particular to a safety management system for automobile transmission shaft production based on big data, which comprises a data acquisition module, which is used for collecting production parameter data, environment parameter data, operator behavior data and quality inspection data of multiple production devices in the automobile transmission shaft production process in real time, and constructing an original safety data set; a big data processing platform, which is in communication connection with the data acquisition module, is used for cleaning, fusing and standardizing the original safety data set, and generating a standardized safety data set; a safety risk research and judgment module, which is connected with the big data processing platform, is used for storing a dynamic safety threshold model, and identifying abnormal states and safety risks in the transmission shaft production process in real time based on the standardized safety data set, and outputting quantitative research and judgment results; the safety risk research and judgment module realizes the whole domain monitoring, hierarchical early warning, millisecond-level emergency shutdown and closed-loop control of the transmission shaft production safety, and significantly improves the response speed and management efficiency.

The invention discloses a waterworks intelligent dosing optimization system and method based on data driving, and belongs to the technical field of water treatment, and the system comprises a historical data intelligent clustering module which obtains and preprocesses historical operation data, employs a minimum distance clustering algorithm to automatically generate a clustering center representing a typical working condition, and sends the clustering center to a cloud server; calculating a corresponding expert recommended dosage, and constructing an expert experience knowledge base; the real-time parameter dynamic matching module is used for acquiring real-time operation parameters, performing window processing, performing Euclidean distance matching on the real-time operation parameters and a clustering center in a knowledge base, and finding out a reference dosage corresponding to the most similar working condition; and the dosage optimization decision module is used for performing feedback correction on the reference dosage according to the comparison relationship between the real-time effluent quality and the standard value, and generating a final dosage instruction under the constraint of the minimum dosage. According to the invention, accurate and dynamic control of the dosage is realized, and the medicament consumption is obviously reduced on the premise of ensuring the stability of the effluent quality.

The utility model relates to a kind of liquid flow temperature control type molten material discharging distributor, main body includes the distributor formed by upper feed chute and lower discharge base, including temperature sensor, liquid flow output pipeline, liquid flow return pipeline and the liquid supply temperature control system of PLC control cabinet, and the interconnection component of the sealing installation connecting seat of upper temperature sensor installation hole, liquid flow output pipeline and liquid flow return passage. When working, the rated temperature of heated liquid is set according to the temperature characteristics of the molten material to be treated by PLC control cabinet, the main body of distributor is heated by circulating liquid supply, and closed-loop control is carried out according to the real-time temperature information detected by temperature sensor, to ensure that the ambient temperature required to keep the molten material to be treated in liquid state is established on the main body of distributor, so as to ensure that it flows unobstructed and uniformly discharges material in the distributor, which can avoid the material sticking and poor flow caused by temperature difference in the prior art, resulting in blocked leakage, component separation.

The invention relates to a machine room ceiling condensation and leakage monitoring and processing method, device and equipment and a medium. The method comprises the steps that environment temperature and humidity data and leakage detection signals in a machine room are collected in real time; determining a condensation risk index corresponding to each cabinet in the machine room through the temperature and humidity data and preset equipment arrangement parameters; and determining a corresponding dehumidification strategy and / or drainage strategy based on the condensation risk index and the leakage detection signal, and correspondingly processing the machine room. The device has the effect of improving the machine room ceiling accumulated water and leakage treatment efficiency.

The invention relates to the technical field of visual detection, and relates to a screw locking visual detection method and system. The method comprises the following steps: providing multi-mode illumination and acquiring an image of a screw to be detected; carrying out defect detection on the to-be-detected screw and judging qualification, wherein the defect detection comprises at least one of floating height detection and skew detection; sending a control signal to an external control system according to a detection result; according to the invention, multi-mode illumination is provided, screws of different materials and surface states can be adapted, high-quality images can be obtained, and various defects in the screw locking process can be accurately identified by carrying out multi-dimensional defect detection such as floating height detection and skew detection on the to-be-detected screw and judging qualification; and a control signal is sent to an external control system according to a detection result, so that closed-loop control of production line equipment is realized, and stable and reliable operation of the assembly system is ensured.

The utility model relates to electronic circuit technical field, concretely relates to an adjustable constant current source drive circuit, in the drive circuit, when the second input end of adjusting circuit receives voltage signal, current sampling circuit perceives the current of load and forms voltage difference at both ends, feedback circuit gathers voltage difference and forms feedback signal input to adjusting circuit, and adjusting circuit exports adjusting signal according to feedback signal and received voltage signal, and the process of adjusting signal and feedback signal, gathering voltage difference, repeatedly perceiving current is repeated until feedback signal and voltage signal are consistent, and load current reaches stable value. The adjustable constant current source drive circuit provided by the utility model embodiment, through the setting of current sampling circuit, feedback circuit, adjusting circuit and control circuit, not only realizes the closed loop control and accurate adjustment of load current, and through double -end sampling, avoids the problem of system power supply noise and unstable influence introduced by single -end sampling.

The utility model relates to the technical field of intelligent logistics and cooperative scheduling control, and particularly provides an intelligent logistics transfer device. The device comprises a transferring device, a swing arm structure, a grabbing mechanism and an intelligent cooperative scheduling module. The system integrally supports task state feedback, path obstacle avoidance and cluster scheduling execution, is suitable for flexible storage, intelligent carrying and multi-target material circulation scenes, and has the remarkable technical advantages of intelligent control, path optimization, task collaboration and the like.

The application relates to the field of security monitoring, and discloses a door access video monitoring linkage management method and system. The method comprises the following steps: acquiring a door access triggering event and associated video data, extracting a current observation value of a target, acquiring a previous time state vector and a covariance matrix, calculating a prior state vector at a current time, calculating an observation residual of a theoretical prediction observation value and the current observation value, dynamically updating an observation noise covariance matrix by using the observation residual and a preset forgetting factor, calculating an adaptive gain matrix based on the updated observation noise covariance matrix, correcting the prior state vector to obtain a target state estimation value at the current time, analyzing the target state estimation value into a spatial coordinate, and combining a door access terminal coordinate to generate a pan-tilt control instruction to perform linkage. The application adjusts noise parameters and gain matrices on line, overcomes the tracking lag and divergence problems caused by a fixed parameter model, and improves the reliability of video tracking in a door access linkage scene.

The application relates to the technical field of archive management, in particular to an electronic archive whole life cycle management method and system, which comprises the following steps: obtaining an electronic archive to be managed and a life cycle stage identifier, matching a corresponding stage management rule set, identifying core and auxiliary management actions; checking the completion of the core action, counting the matching degree of the auxiliary action and judging whether the execution threshold is reached; after the threshold is reached, a stage conversion instruction and an operation list are generated, the stage identifier is updated and the next stage task is distributed. The application helps to overcome the core defects of the lack of stage control in the existing electronic archive management, and improves the accuracy and efficiency of electronic archive management.

This invention relates to the field of civil engineering construction technology, specifically to a method for directly calculating the temperature constraint stress of ultra-long structures based on intermittent time, comprising the following steps: S100, obtaining the initial physical parameters of the ultra-long structure, and deploying displacement sensing devices in the pre-construction blocks on both sides of the post-cast strip of the ultra-long structure; S200, during the curing stage of the pre-construction blocks, obtaining the measured displacement data of the blocks under the measured environmental temperature difference, and deriving and dynamically calibrating the actual comprehensive constraint stiffness of the ultra-long structure on site based on the difference between the theoretical unconstrained displacement and the measured displacement data. This invention, by pre-embedding displacement and temperature and humidity sensing devices in the pre-construction blocks of the ultra-long structure, obtains the measured displacement data during the early hydration heat cooling stage, and derives and dynamically calibrates the comprehensive constraint stiffness and shrinkage development coefficient that are deeply mapped to the actual physical environment on site, thus eliminating the stress calculation error caused by the distortion of traditional static empirical parameter values.

The present application relates to carbon emission monitoring technical field, especially to a kind of integrated energy house's carbon emission monitoring method and system.The method includes the following steps: periodically monitoring real-time supply and return water temperature difference in integrated energy house heating system normal heating state, to assess the loop flow imbalance degree of each heating loop;According to loop flow imbalance degree, respectively account the overheating loss caused by user behavior and the heat source degradation energy consumption caused by system compensation operation, to convert the carbon emission increment data of heating system;Flow regulation processing is carried out to overcurrent loop and undercurrent loop, and integrated collector valve adjustment instruction data is generated.The present application realizes accurate quantification of additional carbon emission caused by uneven flow distribution by monitoring distributed heating pipe network flow in integrated energy house.

The present application relates to the technical field of plate hydraulic machine, disclose a kind of plate pressure shaping hydraulic machine, including lower base body, the middle part of the top of lower base body is provided with support base, the top of lower base body four corners is provided with support column, the top of four groups of support column is commonly provided with upper base body, the bottom of upper base body is provided with four groups of plunger main cylinder;The present application is equipped with four groups of lower plunger cylinder and four groups of upper plunger cylinder with built-in displacement sensor, realizes moment leveling system control, and is matched with four sets of displacement sensor data, real-time adjustment high-frequency response proportional servo valve control parameter, and mobilizes dedicated leveling system high-pressure pump group and energy accumulator, complete to lower plunger cylinder and upper plunger cylinder Rapid stable liquid supplement, realize high response closed-loop control, ensure to realize high-precision high-performance leveling task, finally, leveling accuracy is better than 0.08mm / m, reach the most advanced similar product level in the world, it is 1.5 times of the similar product in the current domestic.

The utility model discloses a steel wire drawing device, including machine table, lubricating powder box, drawing die of cooling coil, tow and water pump and traction motor of industrial control board electric connection of tow cooling coil. Drawing die is the cylinder that is equipped with cooling coil to the outer periphery, realizes effective cooling through heat exchanger and water pump. The device still includes the self -adaptation adjustment steel wire spacing guide wheel, and the quick replacement of deformation section and sizing section in drawing die is pluggable, and realizes accurate control through servo electric push rod and pressure sensor. The cooperation of gas collecting hood and negative pressure fan can effectively collect and handle steel chips and waste gas, and simultaneously utilize magnet separation steel chips, reduce environmental pollution.

The application discloses a kind of unmanned vehicle express cabinet goods delivery control method and system of intelligent scheduling, comprising the following steps: step one: constructing goods delivery scheduling dataset;Step two: generating delivery state prediction sequence based on improved Chronos model;Step three: calling Aquila optimization algorithm to generate target goods delivery task sequence;Step four: control corresponding sorting motor and auxiliary conveying motor start;Step five: stop sorting motor and auxiliary conveying motor and start main conveying belt motor;Step six: control X-axis motor and Y-axis motor to move to target storage compartment corresponding position;Step seven: control unloading motor to push current goods into target storage compartment;Step eight: continue to generate next target goods delivery task sequence until all goods are completed delivery.The present application uses improved Chronos model and Aquila optimization algorithm to realize unmanned vehicle express cabinet delivery intelligent scheduling.

The invention discloses a road marking identifying and spraying method and system based on image processing, and the method comprises the steps: collecting a lane line image through a camera, and converting the lane line image into an aerial view; establishing rigid calibration of the pose relation between the nozzle and the camera to realize coordinate registration; converting the aerial view from an RGB space to an HSV space, introducing a self-adaptive threshold adjustment mechanism on this basis, and obtaining a lane marking area image from the lane line image according to self-adaptive segmentation; a lane image is converted from a pixel coordinate space to a parameter space, and automatic detection of lane edge lines and marked lines is realized through Hough transform; in combination with the detected lane marking area, the detection area is classified through a gray threshold value or a brightness feature, and the offset of a marking center line is calculated; the transverse position of the spraying mechanism is adjusted in real time according to the offset of the center line of the marked line, dynamic opening and closing control over the spraying head is achieved in combination with the vehicle running speed and the recognition signal state, and it can be guaranteed that the spraying track and the recognition center line are kept consistent.

This invention provides a submersible liquid-cooled level management system, belonging to the field of energy storage system level management technology. It includes multiple level gauges, a battery management system, an oil cooling unit, and a submersible fluid replenishment unit. The multiple level gauges monitor the level of the submersible fluid inside the tank. The battery management system observes the current level information and can control the operation of the oil cooling unit and the submersible fluid replenishment unit separately to achieve the circulation and replenishment of the submersible fluid inside the tank. This submersible liquid-cooled level management system provides real-time monitoring and closed-loop control of the submersible fluid level inside the tank, enabling precise regulation of the submersible fluid level and eliminating operational risks caused by abnormal fluid levels.

The first aspect of this invention discloses a low-NOx emission system for a rotary kiln based on combustion optimization, including a monitoring unit, a control unit, an execution unit, a burner positioning unit, and a heat exchanger unit. The second aspect discloses a control method, including parameter acquisition, benchmark matching, deviation calculation, parameter adjustment, and continuous monitoring. This invention, by setting up an integrated architecture for the monitoring unit, control unit, execution unit, burner positioning unit, and heat exchanger unit, achieves bidirectional collaboration and closed-loop control of each unit throughout the entire process. This solves the problem in existing technologies where front-end combustion optimization and end-of-pipe treatment operate in isolation without a collaborative mechanism, making it difficult to simultaneously achieve low-NOx emissions and energy consumption optimization. Through the control method, continuous optimization of multiple parameters is achieved, ensuring that operating parameters always converge to the low-NOx target range, avoiding emission exceedances due to changes in operating conditions, and realizing stable and continuous low-NOx emissions from the rotary kiln.

The utility model discloses a multi-section type hydraulic oil cylinder, which relates to the technical field of hydraulic oil cylinders and comprises a bearing seat, an adjusting shaft is rotatably connected in the bearing seat, a multi-section hydraulic cylinder main body is fixedly connected on the outer side of the adjusting shaft, a telescopic valve is arranged on the outer side of the multi-section hydraulic cylinder main body, an adjusting mechanism is arranged in the bearing seat, and the adjusting mechanism is fixedly connected with the adjusting shaft. The adjusting mechanism comprises an adjusting assembly and a stabilizing assembly, the adjusting assembly and the stabilizing assembly are used in cooperation, the adjusting assembly comprises a motor, and the motor is fixedly connected to the side, away from the adjusting shaft, of the bearing base. According to the multi-section type hydraulic oil cylinder, the use angle of the multi-section type hydraulic oil cylinder body can be rapidly adjusted through the arranged adjusting mechanism, compared with a fixed installation mode, the multi-section type hydraulic oil cylinder is more diversified in use scene, the influence on production due to the fact that the angle cannot be adjusted is avoided, and the multi-section type hydraulic oil cylinder is simple in structure and high in practicability.

The utility model relates to the technical field of tensioners, and discloses a belt tensioner for a belt conveyor, which comprises a mounting rack, the middle end of the front surface of the mounting rack is rotatably connected with an adjusting shaft, the front end of the adjusting shaft is slidably inserted with an adjusting block, and the front end of the adjusting block is fixedly connected with an adjusting plate. According to the belt tensioner for the belt conveyor, through the linkage design of the pressure sensor and the control host, the tension change of the belt can be monitored in real time and fed back to a control system, when it is detected that the belt is loose or too tight, the system automatically drives the motor to adjust the worm and gear mechanism, closed-loop control over the tensioning force is achieved, and the belt tensioning effect is improved. A dynamic adjusting mechanism avoids the limitation that a traditional mechanical tensioning device depends on manual intervention, slipping or excessive stretching of the belt is effectively prevented, a cooling mechanism formed by the radiating fins arranged on the circumference of the inner wall of the tensioning pipe and the axial flow fan remarkably reduces the temperature of the contact area of the belt and the tensioning pipe, and the service life of the belt is prolonged. The problems of belt aging, cracking and the like caused by high temperature are reduced, and the service life of the belt is prolonged.

The invention relates to the field of geotechnical engineering construction monitoring, and discloses an intelligent monitoring system and method for the construction quality of a cement mixing pile, and the system comprises a front-end sensing subsystem, an industrial control center and an execution control subsystem. The method comprises the following steps: fusing Beidou RTK elevation and encoder displacement data to generate an endogenous credible depth reference; constructing a stratum impedance fingerprint model by using the current and speed data of the drilling stage; and in the lifting grouting stage, the drill lifting speed is planned in a feedforward mode according to the model, the grouting flow is adjusted in a follow-up mode according to the actual drill lifting speed, meanwhile, the grouting effect is monitored by calculating the lubricating efficiency index, and multi-mode closed-loop correction is executed. According to the method, by establishing a stratum digital mapping and flow machine coupling control mechanism, the problems that the depth measurement error is large, construction parameters are not matched with the stratum, and quality evaluation lags behind are solved, and self-adaptive control and whole-process quality supervision of pile foundation construction are achieved.

The invention discloses a terminal electricity utilization information acquisition system based on a safety component. The system comprises a cabinet body, a cabinet door and a safety lock assembly integrated with a password input device and provided with an electric control spring bolt. And a main control unit electrically connected with the password input device and the electric control spring bolt is arranged in the cabinet body. A processing module responsible for logic control, a password module for storing verification passwords and an authority module for storing operation authority are integrated in the main control unit. A connection management device is arranged in the cabinet body, the connection management device comprises an instruction input device and an electric connection switching assembly, and the instruction input device is electrically connected with the main control unit. And the main control unit unlocks the safety lock assembly after verifying the identity and authority of an operator according to the received unlocking password, and controls selective single-point electric connection between the electric connection switching assembly and the target acquisition terminal according to a received authority instruction. According to the invention, hierarchical authorization can be realized, and the security of a terminal system is remarkably improved.

The utility model discloses a reinforcing bar wire drawing device tension compensation mechanism relates to metal wire drawing technical field. The reinforcing bar wire drawing device tension compensation mechanism, including work table and dynamic regulation compensation mechanism, dynamic regulation compensation mechanism includes device base, mounting panel, adjusting plate, motor, threaded rod and slide rod, and device base fixedly connected at the bottom of work table, and mounting panel fixedly connected at the bottom of device base, and adjusting plate slidingly connected at the top of device base, and motor fixedly connected at the surface of device base, and threaded rod rotationally connected at the surface of device base, and the output of motor penetrates device base and is fixedly connected with threaded rod, and threaded rod rotationally connected at the surface of mounting panel, and slide rod fixedly connected at the opposite surface of device base and mounting panel, realize the closed loop control of tension in the wire drawing process, solve the problem of insufficient precision of manual regulation, improve the reliability of equipment operation and the regulation response speed through the optimization layout of mechanical structure simultaneously.