24results about How to "Avoid outside interference" patented technology

The present application relates to a circuit for measuring resistance, comprising: a combined constant current source and constant voltage source for providing a constant supply current and a supply voltage, respectively, the supply current being less than or equal to 1 ampere; the resistor to be measured and the reference resistor are connected with each other in series and are electrically connected with the constant current source or the constant voltage source respectively; the load signal conditioner and the reference signal conditioner are electrically connected with the resistor to be measured and the reference resistor respectively; the two-way synchronous AD conversion module is electrically connected with the load signal conditioner and the reference signal conditioner respectively; the controller is electrically connected with the two-way synchronous AD conversion module; and the gear switcher is electrically connected with the controller and is used for switching between the constant current source and the constant voltage source. According to the circuit for measuring the resistance, the mode of combining the constant voltage source and the constant current source is adopted, and the resistance can be measured in a self-adaptive and high-precision mode in an ultra-wide range.

The invention discloses a robust optimization method for slab yard crown block scheduling of an iron and steel enterprise, relates to a method for optimizing a crown block operation process, and provides a robust optimization model for solving a slab yard crown block scheduling problem, so that the crown block operation process is effectively optimized, and the in-out warehouse efficiency of slabs is improved. According to the actual starting time of slab hoisting operation, a mathematical model is established by taking the minimum slab warehousing time as a target function. Establishing a deterministic crown block scheduling model under an ideal condition; due to the fact that many uncontrollable factors can occur in slab operation, crown block scheduling can be affected, an original operation plan is not feasible, and a robust optimization model of crown block scheduling under uncertain factors is established on the basis of a deterministic model. And solving the model by using LINGO, and verifying the correctness and feasibility of the model. And testing the influence of uncertain parameters on the crown block scheduling problem by using a sensitivity analysis method, and verifying the robustness of the model.

The invention discloses a frequency converter anti-breakdown capability testing device, and belongs to the technical field of frequency converter testing devices. Comprising a rack, and a fixing frame is fixedly installed on the rack; the material table is rotationally mounted on the rack, and a placing groove for placing the frequency converter is formed in the material table; the testing arm is installed on the fixing frame in a lifting mode and provides rotation of the material table to enable the containing groove to be located on the lower side of the testing arm; the monitoring block is fixedly mounted on the testing arm, and an electrode column is arranged on the monitoring block; a fixed cylinder is fixedly installed on the monitoring block, and the upper end of the electrode column is slidably arranged in the fixed cylinder. The frequency converter anti-breakdown capability testing device provided by the invention has the beneficial effects that through the arrangement of the electrode column and the fixed cylinder, the lower end of the electrode column is in contact with the power connection terminal and slides in the fixed cylinder, so that gas in the fixed cylinder is discharged into the connecting cylinder, and the connecting spring is compressed; at the moment, pre-tightening force exists between the lower end of the electrode column and the power connection terminal.

The utility model relates to the technical field of solution recovery devices, in particular to solvent recovery equipment, which comprises a solvent recovery equipment main body, when the solvent recovery equipment main body is required to recover a solvent, an assembly ring belt is used for limiting and fixing the outer side of a sundry filtering tank, and a front end sealing front end cover is used for sealing a tank body of the sundry filtering tank; when the impurity filtering tank generates centrifugal force through internal rotation to separate a solution and convey the solution into the refining tank body, the refining tank body refines the input solvent, and the input solvent is conveyed into the distillation tank body after refining is completed, so that the input solvent is distilled, the concentration of the solvent needing to be collected is increased, and residues of impurities in the solvent are reduced; meanwhile, the distillation progress plate displays the condition in the distillation tank body, so that an operator can control the condition in the tank body conveniently, and when distillation is completed, the distillation progress plate gives a sound prompt, so that extraction can be carried out in time.

The invention belongs to the field of signal acquisition, and particularly relates to a microseismic signal acquisition method and system for distributed hybrid networking, a medium and equipment. The method comprises the following steps: S1, constructing a local area network covering an upper computer and at least one micro-seismic acquisition station based on network relay equipment; and S2, sending an acquisition instruction to the local area network, and enabling the micro-seismic acquisition station in the local area network to perform micro-seismic signal acquisition. The method has the advantages that the network relay equipment and the micro-seismic acquisition platform are arranged in advance, basic equipment is supported for follow-up establishment of the local area network, in addition, acquisition control and data transmission in the local area network can effectively prevent external interference, and the data transmission efficiency can be further improved.

The utility model relates to the field of hydraulic lifting platforms, and discloses a hydraulic lifting platform deflection alarm device, which comprises a lifting platform, an alarm device and a control device, the detection mechanism is connected to the lifting table and used for detecting the deflection state of the lifting table; the detection mechanism comprises a mounting seat which is mounted on the lifting platform, a detection groove is formed in the bottom of the mounting seat, and a control groove is formed in the top wall of the detection groove. According to the utility model, by adjusting the positions of the contact piece and the heavy hammer, the trigger sensitivity can be flexibly adjusted as required to adapt to different working environments and user requirements, a closed and protected space can be provided for the heavy hammer through the mounting seat, the detection groove and the cover plate, and when the heavy hammer is not used or maintained, the heavy hammer can be effectively stored; and external interference or mistaken touch is prevented.

The application discloses a water-vapor separation device, which comprises a shell with an inlet and at least one outlet; an impeller in the shell, an inlet space in the impeller being connected with the inlet; a first water-vapor separation structure outside the impeller, a centrifugal diffusion space being defined between the first water-vapor separation structure and the impeller; at least one air duct outside the first water-vapor separation structure, one end of the air duct being connected with the centrifugal diffusion space and the other end being connected with a corresponding outlet, and the air duct being provided with a second water-vapor separation structure at least at one position. The application also discloses a dishwasher inner container and a dishwasher. The water-vapor separation device has the advantages of forming a completely closed internal circulation structure, being relatively simple in structure, being good in water-vapor separation effect, being high in efficiency and providing a relatively perfect drying mechanism.

The invention relates to the technical field of equipment for testing or treating seeds, rhizomes or analogues before sowing or planting, and provides a multipurpose experimental box for rice cross breeding and pollination, which comprises a box body, the box body is provided with a box cover capable of being opened and closed, and the box body and the box cover can form a closed cavity; a detachable supporting plate is transversely arranged in the middle of the box body, a plurality of rice ear culture glass tubes are arranged on the supporting plate, and a plurality of through holes are formed in the bottoms of the rice ear glass tubes; a heating pipe is fixedly sleeved on the periphery of the box body, and a temperature sensor is fixedly installed at the center position of the supporting plate through a center installation seat. According to the invention, external interference can be effectively avoided through the closed box body, and the arrangement mode of the heating pipe can effectively carry out temperature rise control aiming at the environment temperature and effectively avoid adverse effects caused by too high local temperature; on the whole, various environmental influence factors in the rice cross pollination process can be simply and effectively controlled, so that the influence of adverse weather is avoided, and the effective development of a rice cross breeding experiment is greatly promoted.

The invention relates to the technical field of pipeline welding for water conservancy construction, and discloses a pipeline welding device for water conservancy construction, which comprises a base plate, a telescopic frame is fixedly connected to the top of the base plate, an isolation body is fixedly connected to the top of the base plate, a protection body is fixedly connected to the top of the isolation body, and an electric push rod is fixedly connected to the top of the protection body. The output end of the electric push rod is fixedly connected with a plate lifting frame, and a rotating device is arranged at the top of the telescopic frame. An electric push rod stretches out and draws back to drive a plate lifting frame to move up and down, the plate lifting frame drives a telescopic frame to move up and down, the height adjusting effect is achieved, the position of a pipeline is adjusted according to different sizes of the pipeline, and therefore the welding position is adjusted, power is supplied to a motor to enable the output end of the motor to rotate, then transmission is conducted to a belt, and the belt rotates to drive a thin rod to rotate; and the slender rod rotates to drive the threaded rod to rotate.

The present invention belongs to the field of rail transit detection technology, and in particular discloses an online data acquisition device, including a box body arranged beside a track and an optical device for collecting image information, the box body includes a front frame and a rear frame arranged relatively, the optical device is between the front frame and the rear frame, the front frame is made of a transparent material, and a rubber ring surrounds the outer side of the gap between the front frame and the rear frame. The present invention adjusts the components so that the first card frame and the second card frame are matched and connected to the two sides of the slide rail, the slide rail slides on the slide rail through rollers, and the moving slide rail drives the optical device inside the box body to move synchronously, and the moving optical device collects the image information data of the train wheel pair through the transparent front frame to ensure the comprehensiveness of data collection, and the gap between the front frame and the rear frame is correspondingly sealed by the rubber ring to prevent external water vapor or components from entering the box body, and to prevent the optical device from being disturbed by the outside during the data collection process.

The utility model discloses an adjustable breeding incubator which comprises an incubator body and an electric heating bottom box arranged at the bottom end of the incubator body, strip-shaped ventilation holes are densely distributed in the top end of the electric heating bottom box, and the electric heating bottom box is communicated with the interior of the incubator body through the strip-shaped ventilation holes in the top end of the electric heating bottom box. A control top box is arranged at the top end of the incubator body. The incubator has the beneficial effects that the novel dense closing device is additionally arranged on the front side of the center of the outer wall of the right end of the incubator body, the device enables a metal closed barrier strip to flexibly move back and forth and rotate through structures such as a shaft hole and a metal connecting rod, and a compression spring provides elastic fastening force to ensure stability; the metal linkage strip can synchronously drive the multiple metal closed barrier strips to rotate or pull, operation is convenient and fast, the soft rubber pad at the rear end avoids damage caused by hard contact with the box door, the sealing performance between the box door and the box body is enhanced, many problems caused by the fact that a sealing pad of an existing incubator is prone to loosening are effectively solved, and the overall performance and reliability of the incubator are improved.

The application relates to the technical field of battery safety detection, and discloses a power battery safety detection and evaluation system based on multi-modal visualization, which comprises a detection device and an evaluation device, wherein the detection device is connected with the evaluation device; the detection device comprises a sealed test cavity, a safety trigger and loading module, a multi-modal parameter acquisition module and a data processing and visualization module; an analysis module constructs a coupling characteristic vector based on temperature characteristics, smoke characteristics and deformation characteristics, and determines a safety evaluation value of a battery to be detected according to the coupling characteristic vector; a judgment optimization module judges whether the safety evaluation value needs to be optimized according to power data; if yes, an optimization coefficient of the safety evaluation value is determined based on the air pressure in the bin and the power data, and an optimized safety evaluation value is obtained; and a judgment module determines the safety grade of the battery to be detected according to the optimized safety evaluation value. The application can comprehensively, accurately and intuitively detect and evaluate the safety condition of the power battery.

The utility model discloses a lateral shutter assembly with a linkage opening and closing mechanism, which comprises a shutter frame and a plurality of shutter plates positioned in the shutter frame, the plurality of shutter plates comprise shutter plate bodies and shutter end cover seats positioned at two ends of the shutter plate bodies, the shutter end cover seat at any end is matched with a linkage rack, and the linkage rack is matched with the linkage rack. The linkage rack is located in the shutter frame, the shutter end cover seat comprises an end cover body, a rotating shaft part and a rotating tooth part, the rotating tooth part is used for being matched with the linkage rack in a meshed mode, and the linkage rack is used for synchronously driving the corresponding rotating tooth part to rotate and achieving overturning of the plurality of shutter plates in a linkage mode. According to the utility model, the embedded linkage rack design is adopted, so that the linkage matching of the louver boards is facilitated, the convenience of the whole linkage is improved, and meanwhile, the appearance is good in aesthetic feeling.

The application discloses a kind of method and system for laser radar ranging based on double pulse interval and communication, belong to the technical field of instruments and apparatus, including signal processing module, signal transmitting module, signal receiving module and signal measurement module;The application combines pulse ranging and pulse communication, realizes communication effect while realizing distance measurement, improves system integration degree;Radar IP is added using FPGA, monostable trigger is used to generate time window signal, TDC is used to measure signal spacing, and the device cost is lower;Part of irrelevant signal is shielded using time window at receiving end, and the anti-interference ability of communication is improved;Radar IP based on double pulse interval is used to prevent external interference and further improve the anti-interference ability of ranging and communication.The method and circuit realize communication while identifying and distance measuring the signal object, and have certain practical value in various radar communication occasions.

The invention discloses a PCB liquid crystal phased array antenna, comprising: an antenna cover layer and a spacing layer, wherein the antenna cover layer and the spacing layer are spaced apart, and an air dielectric layer is formed between the antenna cover layer and the spacing layer; a first transmission line layer is arranged on the spacing layer and is located in the air dielectric layer; the air dielectric layer is provided with an active device, and the active device is connected to the first transmission line layer; a phase shifter layer is connected to the spacing layer, and the phase shifter layer is electrically connected to the active device through a first metallized via hole; a third dielectric layer is connected to the phase shifter layer; a second transmission line layer is connected to the third dielectric layer, and the second transmission line layer is electrically connected to the phase shifter layer through a second metallized via hole; the invention solves the problem that a liquid crystal phase shifter as an independent device is difficult to be centrally packaged in the same chip with a power device like a traditional phase shifter, so that the loss of the phase shifter is difficult to be compensated by the power device.

The invention provides a part stamping device for electromechanical equipment production, and relates to the technical field of stamping equipment. The transverse moving vertical plate is fixedly installed on the back edge of the top of the stamping table in a vertically upward mode, the side protection plates are fixedly installed on the edges of the left end and the right end of the stamping table respectively, and the rear ends of the side protection plates are vertically and fixedly connected with the transverse moving vertical plate. A controller is fixedly hung on the outer side wall of the side protection plate at one end; a motor is fixedly installed at the position, corresponding to the middle of the transverse moving vertical plate, of the side protection plate at the end where the controller is located. The device is based on a stamping table, and a stable and convenient-to-operate overall structure is constructed. Due to the arrangement of the transverse moving vertical plates and the side protection plates, the stability of the device is enhanced, and a clear and wide operation view is provided for operators. And particularly, the side protecting plates adopt the inclined plane design with the short front ends and the high rear ends, so that the convenience and the comfort of operation are greatly improved by the humanized consideration, and an operator can easily observe and control the whole stamping process.

This invention belongs to the field of medical testing equipment technology, specifically an intelligent anti-loosening chest breathing effort testing device with a magnetic quick-change probe. The proposed solution includes: a magnetic suction mechanism, one end of which is fitted with a sleeve tube. This mechanism enables quick magnetic attachment and disassembly of the probe to the device body, and forms an intelligent anti-loosening seal through the magnetic attraction and elastic structure, preventing the probe from falling off and leakage of the patient's exhaled air during testing; and a testing mechanism, with both ends fixedly mounted on the other ends of the two magnetic suction mechanisms. This invention utilizes a Tesla valve structure composed of a right side plate, a left side plate, and a mounting plate to create an asymmetric resistance airflow channel. During inhalation, the airflow passes through quickly; during exhalation, the airflow is guided by a triangular diverter and flows along the surfaces of the right and left side plates, creating a counter-impact. This counter-impact significantly increases exhalation resistance, ensuring the required airflow power for testing while greatly reducing the respiratory burden on the tester.

This invention discloses a multifunctional rock sample immersion test device and method, belonging to the field of rock sample immersion testing. The device's air-drying mechanism is located above the rock sample immersion mechanism and is configured to supply air into the immersion mechanism to accelerate the drying of the rock sample and the inner cavity of the immersion mechanism. The rock sample immersion mechanism is located above the weighing mechanism and is configured to provide a stable environment for the rock sample immersion test. The drain and inlet of the automatic water inlet and outlet mechanism are located inside the immersion mechanism and are configured to automatically supply and drain water into the immersion mechanism. Both the weighing mechanism and the automatic water inlet and outlet mechanism are electrically connected to a control mechanism. The control mechanism controls the automatic water inlet and outlet mechanism to automatically supply and drain water into the immersion mechanism, making the immersion period and immersion pressure adjustable, and automatically calculating and recording the rock sample moisture content. This invention solves the problems of existing rock sample immersion test techniques being complex to operate, labor-intensive and time-consuming, having inaccurate test results, and having a low degree of automation.

The utility model discloses an optical module and a vehicle lamp, and the optical module comprises a high beam adjusting part which is provided with at least one high beam adjusting surface and is configured to adjust and emit high beam rays towards a light emitting side; the low-beam adjusting part is provided with at least one low-beam adjusting surface and is configured to adjust emergent low-beam rays towards the light emitting side; the high beam adjusting part and the low beam adjusting part are located on the two sides of the boundary datum plane respectively. The first heat dissipation part is arranged on the side, away from the boundary reference plane, of the high beam adjusting part and used for installing a high beam light source; the third heat dissipation part is arranged on the side, away from the boundary datum plane, of the low-beam adjusting part and used for installing a low-beam light source. The heat dissipation part can dissipate heat from multiple angles of the dimming part, the dissipated heat is dispersed in different directions of the peripheral side, the heat dissipation efficiency is improved, the heat dissipated by the dimming part can be discharged in time, and the service life is prolonged. And the heat dissipation part also has a protection effect on the dimming part.

The utility model discloses a multi-station chemical detection device capable of avoiding interference, which relates to the technical field of chemical detection stations, and comprises a workbench, a box body is arranged at the upper end of the workbench, a plurality of protection boxes are arranged in the box body, the protection boxes are separated by partition plates, and the partition plates are arranged on the workbench. And a placing table is installed at the position, located at the bottom end of the protection box, of the upper side of the workbench, a box door is installed at the position of one side of the placing table, a moving mechanism is installed at the bottom end of the placing table, and a gas purification mechanism is installed at the bottom end of the workbench. Experiment tools are moved into the protection box through the moving mechanism, after the placement table is moved into the protection box, the protection box is sealed through the box door and isolated from the outside, an experiment is protected through the protection box, external interference is avoided in the experiment process, and meanwhile, the experiment efficiency is improved in the experiment process. And harmful gas generated by the experiment is purified through the gas purification mechanism.

The utility model relates to the technical field of static bag sealing, in particular to PCBA static bag sealing equipment which comprises an upper box body, a fixed long plate is fixedly connected to one side of an inner cavity of the upper box body, and two first supporting rods are fixedly connected to the surface of the fixed long plate. The device has the advantages of identifying and clamping a PCBA and sealing an electrostatic bag, and in the actual use process, the upper box body, the conveying and identifying mechanism, a first supporting rod, a first electric sliding table, a first sliding plate, a second electric sliding table, a second sliding plate, a first clamping mechanism, a second clamping mechanism, a second supporting rod and a CCD identifier are used in cooperation; according to the PCBA identifying and grabbing device, PCBA can be automatically identified and accurately clamped, it is guaranteed that each link from identifying to grabbing of the PCBA can be smoothly completed, in the electrostatic bag packaging process, the supporting plate platform provides a firm supporting face, and the electrostatic bags can be accurately conveyed to the surface of the supporting plate platform in cooperation with the lifting suction cup mechanism.

The utility model relates to cylinder cover test technical field, concretely is a kind of engine cylinder cover air tightness tester: including base plate, the surface of base plate is fixedly connected with positioning screw rod, the surface of positioning screw rod is sleeved with sealing gasket, the surface of positioning screw rod is sleeved with cylinder cover body, the surface of positioning screw rod is threadedly connected with lock nut, one side of sealing gasket is provided with gas pipe connecting port.The utility model is fixed with positioning screw rod on base plate, screw rod is sequentially sleeved with sealing gasket, cylinder cover body, and is locked with lock nut, gas pipe connecting port inserts gas pipe joint, there is sealing ring on joint, gas pipe joint connects gas pipe and air gun, when detecting, cylinder cover body is placed into water, air gun gas, if bottom bubble, air tightness drops, no reaction is good, it is simple to operate, need not professional skill, and tool cost is low.

The invention discloses a pet online interaction system operation method. The method comprises the following steps: acquiring real-time audio data and video data; a smell sensor is used for collecting smell of a pet, collected smell information is converted into an electric signal, and the electric signal is transmitted to a remote server through a network; according to the collected real-time audio data, video data and smell, monitoring whether the pet meets an online interaction condition or not; when it is monitored that the pets meet the online interaction conditions, a preset pet recommendation method is used for determining a first interaction pet from pets which are currently online and are in an idle state, and the target pet interacts with the interaction pet through an interaction box; and establishing a communication link between the target pet and the interactive pet. By remotely transmitting the smell of the pet, a pet owner can more deeply understand the character and characteristics of the interactive pet and select a more suitable playing partner or partner for a target pet, and the interactive box is a relatively closed environment, so that the target pet is helped to concentrate on interaction with the interactive pet, and external interference is avoided.

The utility model belongs to the technical field of medicine manufacturing, and particularly relates to an auxiliary device for monitoring temperature change in a product sterilization process. The auxiliary device comprises a main cylinder, an observation cover and an end cover, the main cylinder is made of a corrosion-resistant metal material, a sealing body used for inserting a temperature detection probe in a sealing mode is arranged on the end cover, and the end cover and the observation cover with the perspective performance are arranged at the two ends of the main cylinder in a sealing mode respectively. According to the technical scheme, the main cylinder can be heated and cooled together with a product, and a stable temperature field is provided for a temperature sensor for monitoring the temperature of the product in the whole sterilization process. The main cylinder can provide a stable temperature field and can be used repeatedly. Therefore, the problems of non-uniform temperature distribution and poor stability of the reference bottle / reference bag in application are solved, the situation of leakage caused by damage is avoided, and the auxiliary device can be used for sterilizing products with different volumes and has relatively good flexibility and applicability.