40results about How to "Avoid operating errors" patented technology

The invention discloses a deep convolutional neural network-based pineapple maturity nondestructive testing method and system, and relates to the technical field of vegetable and fruit detection. Comprising the following steps: acquiring a pineapple appearance image with known surface texture feature parameters and color feature parameters, and preprocessing the pineapple appearance image to form a sample image; and establishing a convolutional neural network prediction model based on the sample image, inputting a pineapple appearance image and outputting corresponding feature parameters. And collecting an appearance image of a pineapple to be detected, preprocessing the appearance image, inputting the preprocessed appearance image into the prediction model to obtain characteristic parameters, and calculating a maturity judgment coefficient. And detecting the ethylene and carbon dioxide concentrations of the pineapple to be detected, and correcting the maturity judgment coefficient to obtain an accurate judgment coefficient. According to the method, the judgment threshold value is dynamically corrected, the accurate judgment coefficient is compared with the dynamic threshold value, different maturity judgment results are sent out, more accurate and comprehensive maturity evaluation is provided, and more efficient and accurate decision support is provided.

The invention belongs to the technical field of microorganisms, and particularly relates to a microorganism detection culture device and method.The system comprises an intelligent environment control system, and a sensor monitors the temperature, humidity and gas concentration of a culture environment in real time to ensure that environment parameters needed by microorganism growth are kept in the optimal state; the automatic sample processing and operating system avoids pollution or errors caused by manual intervention through a mechanical arm or an automatic transmission device; the real-time image monitoring and analyzing system is used for monitoring the growth state of the microorganisms in the culture dish; the camera can continuously shoot images in the culture process; the rapid detection module rapidly obtains activity information of microorganisms, rapid detection is achieved, and time needed by traditional culture is shortened. According to the invention, accurate control, automatic operation and rapid detection are realized, and an efficient, safe and intelligent solution is provided for microbial culture and detection.

The invention relates to a controllable variable-diameter stabilizer for petroleum drilling and an application method.The controllable variable-diameter stabilizer for petroleum drilling comprises an electric mechanical driving module, an intelligent control module, a sensor feedback module and a communication module, and the electric mechanical driving module receives an instruction from the intelligent control module through an electronic signal; adjusting the outer diameter of the driving stabilizer; the intelligent control module receives data from a ground sensor or an underground sensor, calculates underground working conditions in real time and automatically adjusts the outer diameter of the stabilizer; the sensor feedback module is used for monitoring key parameters such as the posture of a drilling tool, a well track and bit pressure; the hydraulic auxiliary module and the electric mechanical driving module work cooperatively to provide dual assurance; the communication module is responsible for data transmission between an underground control center and a ground control center. According to the stabilizer, the performance of the stabilizer in the oil and gas drilling process is remarkably improved, the efficiency in the oil and gas drilling process is greatly improved, accurate and efficient outer diameter self-adaptive adjustment is achieved, and the safety and efficiency in the drilling process are remarkably improved.

The preparation method comprises the following steps: S1, pretreating raw materials; s2, cold heading manufacturing; a, blank pre-upsetting; b, preforming a flange surface; c, reducing the diameter of the screw and finishing the head; d, final upsetting and forming; e, auxiliary forming; s3, heat treatment strengthening; s4, thread machining; and S5, surface treatment. According to the automatic spraying device, the spraying heads are arranged between the stations of the cold header, the correlation type photoelectric sensor, the electromagnetic valve, the time relay, the spraying machine and the cold header are linked through the programmable logic controller to achieve full-automatic closed-loop control, manual intervention is not needed, operation errors are avoided, the production continuity is improved, meanwhile, an oil-based lubricant is sprayed to the surface of a blank, and the production efficiency is improved. The cold heading deformation resistance of the titanium alloy blank is reduced, mold blank adhesion is reduced, the screw forming integrity is guaranteed, and cracks and other defects are avoided.

The utility model relates to the technical field of clinical examination instruments, and provides a small full-automatic blood type analyzer convenient to transport and install, which comprises a cabinet body, a workbench arranged in the cabinet body, a cabinet door arranged on the cabinet body corresponding to the workbench, and a sample adding module suspended above the workbench, a suction head carrying frame, a reagent carrying frame, a diluent carrying frame, a uniform shaking and refrigerating unit and a gel carrying frame are arranged on the working table in the length direction of the working table; a heating module, a puncture module, an interpretation opening and a waste clamping groove are arranged behind the gel carrier, an interpretation module is fixed to the position, close to the interpretation opening, of the back face of the workbench, a centrifugal module is arranged behind the heating module, the upper portion of the centrifugal module is connected with the workbench in a clamped mode, and the lower portion of the centrifugal module extends to a bottom plate of the cabinet body and is fixed to the bottom plate of the cabinet body. According to the scheme, by optimizing the layout of the workbenches and cooperation among the modules, the requirements of scenes such as primary medical treatment and mobile detection for portability and reliability of equipment are met.

The invention discloses a full-automatic processing platform integrating fatty acid value pretreatment and titration and a processing method thereof. The full-automatic processing platform comprises a platform body; the full-automatic processing platform comprises a sample container, a filter, a liquid storage tube, a distilled water container, a KOH solution container and an indicator container located on both sides of the platform body; the full-automatic processing platform comprises a fluid pump and a titration pump located inside the platform body, and a pipetting table and a titration chamber located on the upper end of the platform body; a pipetting cup is arranged on the top of the pipetting table; the instrument pretreatment process and the sample titration process are both fully automated without human intervention in the middle, thus avoiding human operation errors, greatly saving manpower and time, and greatly improving work efficiency, and well solving the difficult problems currently faced by grain and oil departments in fatty acid value detection.

The invention discloses a medical review system document uploading quality control method and device, and the method comprises the steps: obtaining a hospitalization expense list document picture to be uploaded to a medical review system, carrying out the OCR recognition of the hospitalization expense list document picture, and obtaining a picture character recognition result; page number extraction is carried out on the picture character recognition result, wherein the page number extraction comprises the current page number and the total page number; judging whether the number of the hospitalization expense list document pictures to be uploaded is the same as the total page number; if the number of the hospitalization expense list document pictures to be uploaded is smaller than the total page number, performing incomplete uploading prompt to the user; if the number of the hospitalization expense list document pictures is equal to the total page number, the current page number of the hospitalization expense list document pictures is judged repeatedly, and if the current page number of the hospitalization expense list document pictures is not repeated, a correct prompt is uploaded to a user. According to the invention, the situation that the medical examination and verification effect is not ideal due to the fact that individual data is forgotten to be uploaded is avoided, and later maintenance can be quickly and accurately carried out.

The invention relates to the technical field of single-column material rotating mechanisms, in particular to a single-column material rotating mechanism of a column material warehouse, which comprises a bottom frame, a rotating frame is arranged above the bottom frame, a single-column material is placed on the rotating frame, a discharging mechanism is fixedly connected below the rotating frame, and a fixed frame is fixedly connected to the rotating frame. Two limiting frames are rotationally connected to the fixed frame in a symmetrical structure, a material pushing frame is arranged at one end of the single column material, and a plurality of positioning mechanisms are fixedly connected to the material pushing frame in an annular structure. The automatic rotation and warehouse-out and warehouse-in seamless connection of the column materials are achieved, operation errors, delay and repeated labor in the manual carrying process are avoided, a production line can run more stably, production pauses and the labor intensity of workers are reduced, and the production efficiency and the safety coefficient are greatly improved.

The invention relates to an intelligent meter reading method and system based on AI vision and electronic equipment. The intelligent meter reading system comprises a water meter, a camera device, a server and a water meter cleaning device, the method is applied to a server and comprises the following steps: acquiring a water meter image shot by a camera device in real time, analyzing the water meter image and determining whether the water meter has stains; if it is determined that the stains exist, the water meter type of the water meter is determined according to the water meter image; determining a data distribution condition of the water meter according to the water meter type; according to the data distribution condition, whether the stains affect data reading or not is determined; if the data reading is influenced, the water meter cleaning device is started to clean the water meter to read the value of the water meter so as to ensure the normal work of the water meter and the accurate reading of the data. Automatic and intelligent water meter monitoring and cleaning are achieved, the working efficiency is improved, and manual intervention and operation errors are reduced. Stains can be found and treated in time, and better service is provided for water supply companies and users.

The utility model relates to the technical field of a threading machine for corrugated paper processing, in particular to a threading machine for corrugated paper processing, which comprises an operation table, a threading device and an adjusting hole are arranged on the operation table, a bearing seat is arranged at the top end of the adjusting hole, an adjusting ring is arranged on the bearing seat, a supporting plate is arranged on the adjusting ring, and the supporting plate is arranged on the supporting plate. A mounting frame is arranged on the supporting plate, a mounting box is arranged on the mounting frame, a threaded groove is formed in the top end of an adjusting ring, a threaded cover is arranged on the threaded groove, a gear ring is arranged at the bottom end of the threaded cover, and a fastening hole is formed in the mounting box. The threaded cover is driven to rotate by rotating the adjusting ring, accurate angle adjustment of corrugated paper is achieved, arc-shaped threading operation is facilitated, the application range of the machine is greatly expanded, and machining flexibility and product diversity are improved.

The invention belongs to the technical field of washing machine metal accessories, and particularly relates to a necking and flaring machining device for washing machine metal accessories and a machining method thereof.The necking and flaring machining device comprises a base and side plates fixed to the two sides of the surface of the base, and further comprises a machining assembly arranged above the base; omnibearing necking and flaring machining of metal accessories can be achieved in the relative movement process, the machining uniformity and speed are greatly improved, and the defect that local machining is excessive or insufficient easily due to static machining is overcome. Therefore, the necking or flaring metal fittings can reach ideal standards in the aspects of size precision, shape precision, surface quality and the like, high-quality machining tasks can be completed in a shorter time, the machining cycle of a single metal fitting is remarkably shortened, the production efficiency of equipment is improved, manual intervention is not needed, and the production cost is reduced. The operation process is simplified, and uncertainty and errors caused by manual operation are reduced.

The invention discloses an intelligent anti-blocking type desulfurizing absorption tower flue gas pressure measuring device and a cleaning method, the intelligent anti-blocking type desulfurizing absorption tower flue gas pressure measuring device comprises a sampling pipe and a water storage bin arranged on the outer wall of the sampling pipe, the two ends of the water storage bin are a first end part and a second end part located under the first end part respectively, and the first end part is connected with the outer wall of the sampling pipe; the periphery of the inner wall of the water storage bin surrounds the periphery of the outer wall of the sampling pipe to form a water storage cavity; a water outlet gap is formed between the inner wall of the second end part and the outer wall of the sampling pipe; the water outlet amount of the water outlet gap is smaller than the water inlet amount of the flushing water pipe entering the water storage bin, water flow can be sprayed to the outside of the water storage bin along the water outlet gap and the surface of a sampling opening formed in the lower portion of the sampling pipe through water pressure accumulated in the water storage cavity, flushing water flow is free of blind spots, impact force is sufficient, and the flushing effect is good. Sundries on the inner wall can be thoroughly flushed away, continuity and accuracy of pressure data acquisition are guaranteed, and meanwhile, the flushing water pipe can be used for flushing the demister.

The invention belongs to the technical field of automobile part production, and particularly relates to an anti-scratch punch forming device for automobile part manufacturing, which comprises an operation table, the operation table is provided with a sliding groove, a transverse groove and a first through groove, the outer wall of the operation table is fixedly connected with a long plate, an L-shaped rod and a shell, and the operation table is provided with a feeding device. A stamping device is arranged on the L-shaped rod, the feeding device comprises a motor, and an output shaft of the motor penetrates through the plate body and is rotationally connected with the plate body. According to the anti-scratch punch forming equipment for automobile part manufacturing, when a motor is started, a reciprocating screw fixedly connected with the output end of the motor rotates, a threaded block in threaded connection with the reciprocating screw pushes a pipe fitting to move towards the punching device, and according to the design, the reciprocating screw is driven by the motor, so that automatic feeding of the pipe fitting is achieved; the production efficiency is greatly improved, the pipe fitting does not need to be manually placed and taken out, the labor cost is reduced, and meanwhile operation errors caused by human factors are avoided.

The invention discloses a method for identifying different processed products of fresh bamboo juice by detecting the mass concentration ratio of sugar components based on an HPLC-ELSD (High Performance Liquid Chromatography-Evaporative Light Scattering Detector) method and application. The method comprises the following steps: taking a processed fresh bamboo juice stock solution, and adding acetonitrile to prepare a fresh bamboo juice test solution; taking reference substances such as fructose, glucose and cane sugar, and adding acetonitrile to prepare a sugar mixed reference substance solution; injecting the fresh bamboo juice test solution into an HPLC-ELSD system, and detecting the content of sugar components; and calculating the mass concentration ratio of fructose to glucose to cane sugar, and identifying the processing technology of the fresh bamboo juice test solution according to the mass concentration ratio range of sugar components in the fresh bamboo juice stock solution obtained by different processing methods. According to the sugar content detection method, the variable spinning isomerism of glucose is eliminated, the analysis time is shortened to 15 minutes, the content difference of solid contents of different processed products can be eliminated by using the mass concentration ratio of sugar components, different processing technologies of the fresh bamboo juice can be quickly and effectively distinguished, and a support is provided for improving the quality standard of the fresh bamboo juice and guaranteeing the curative effect of the fresh bamboo juice.

The utility model provides an arc extinguishing device of a high-voltage vacuum circuit breaker, which relates to the technical field of high-voltage vacuum circuit breakers, and comprises a quick disassembly and assembly assembly, a silica gel spring protection assembly and a porcelain shell, and the quick disassembly and assembly assembly is arranged at the bottom of the silica gel spring protection assembly; the rapid dismounting and mounting assembly comprises an annular fixing piece and four joint pieces, the bottom of the annular fixing piece is connected with four bases through bolts, the bottoms of the four bases are fixedly connected with cylinders, and the bottoms of the four cylinders are fixedly connected with solid columns. Mounting or dismounting can be completed only by pressing, the spring self-locking structure can quickly lock the position of the arc extinguish chamber, so that the manual operation time is reduced, the pressing action is simple and visual, operation errors in traditional bolt connection are successfully avoided, and meanwhile, the spring self-locking structure has good stability and reliability, so that the service life of the arc extinguish chamber is prolonged. And the arc extinguish chamber can be effectively prevented from loosening or falling off.

The invention relates to the technical field of welding equipment, and provides road anti-collision fence auxiliary welding equipment which comprises a frame body, a workbench is fixedly connected to the top of the frame body, air cylinders are fixedly connected to the two ends of the bottom of the workbench, movable seats are fixedly connected to the output ends of the two air cylinders, and the two movable seats are slidably connected to the two ends of the workbench correspondingly; telescopic shafts penetrating through the movable seats are rotationally connected to the top ends of the two movable seats, positioning mechanisms are arranged at one ends of the two telescopic shafts, a welding device used for butt welding of the handrails is arranged at one end of the top of the workbench, a driving mechanism is arranged at the other end of the top of the workbench, and a cooling mechanism is arranged in the middle of the workbench. The positioning mechanism adopts the design of a pressing rod, a clamping plate and a pressure spring to quickly clamp the handrail, so that the operation error caused by manual alignment is thoroughly avoided, and the welding position precision of the stand column flange bottom plate and the anti-blocking block is ensured.

The application relates to the technical field of microinjection, in particular to a microinjection system and an injection method. The microinjection device comprises a moving carrier, at least two mechanical arms and injectors arranged at the ends of the mechanical arms correspondingly. The moving carrier comprises a horizontal moving platform and a rotating platform. The rotating platform is arranged on the horizontal moving platform and is used for carrying culture dishes containing at least two different types of samples. The rotating axis of the rotating platform is arranged vertically. The horizontal moving platform is used for driving the rotating platform to move in the mutually perpendicular horizontal X direction and horizontal Y direction. The number of the injectors is the same as the number of the sample types. The at least two mechanical arms drive the injectors at the ends to perform injection operations on one type of sample. The application can perform injection on various types of samples in the same culture dish, thereby greatly improving the efficiency of microinjection operation.

The invention provides highland barley sweet fermented grains and a preparation process thereof. The highland barley sweet fermented grains comprise 0.5%-1.0% of a leavening agent, 5%-15% of sugar, 70%-80% of water, 0.1%-0.5% of an acidity regulator, 0.1%-0.5% of an enzyme preparation with the addition amount generally being 0.1%-0.5%, 0.05%-0.3% of a flavoring agent and spice, 0.1%-0.5% of a mineral additive and 2%-6% of an alcohol regulator. According to the highland barley sweet fermented grains and the preparation process thereof, the common problems of non-uniform fermentation and overlarge difference between batches in the traditional process are solved by accurately controlling the temperature, the humidity and the time in the fermentation process. By using an automatic control system and real-time monitoring equipment, the stability of a fermentation environment can be effectively ensured, so that the quality consistency of each batch of products is ensured, the operation error caused by manual operation is avoided, and the production efficiency and the flavor stability of the products are improved.

The application provides a rotary drilling rig pulling force test method, comprising the following steps: preparing a rotary drilling rig, connecting a driving device of the rotary drilling rig with a power head of the rotary drilling rig through a rope; preparing a test tool, the test tool comprising a connecting assembly and a tension sensor, fixing the tension sensor on the ground, connecting one end of the connecting assembly with the tension sensor, and connecting the other end of the connecting assembly with the power head; starting a data acquisition system to acquire real-time force data of the tension sensor; adjusting the driving device to a set output power, so that the driving device tightens the rope to drive the power head to move away from the ground, and a peak value of the real-time force data is a test value of the data acquisition system; and calculating the pulling force of the rotary drilling rig according to a formula. The test method can continuously acquire the pulling force data of the whole process in real time, and the actual pulling force is obtained by using the peak value, so that the data precision is high, the test method is simple, and the safety is high. The application also relates to a test tool.

The utility model relates to the field of plate shearing machines, and discloses a plate shearing machine convenient to maintain, which comprises a plate shearing machine body and a side edge mounting plate arranged on the outer surface of the right side of the plate shearing machine body, a strip-shaped guide rail is fixedly connected to the outer surface of the front end of the plate shearing machine body, and a strip-shaped sliding block is movably connected to the inner surface of the front end of the strip-shaped guide rail. A control electric box is fixedly connected to the outer surface of the front end of the strip-shaped sliding block, a wire harness socket is fixedly connected to the outer surface of the upper end of the control electric box, a connecting wire harness is inserted into the outer surface of the upper end of the wire harness socket, and one end of the connecting wire harness is connected with the plate shearing machine body. According to the plate shearing machine convenient to maintain, due to the fact that a control electric box of a traditional plate shearing machine is fixed, operation is limited in a narrow space, and maintenance is difficult, according to the plate shearing machine convenient to maintain, the control electric box is innovatively designed to transversely and freely move, and due to the design, maintenance is convenient, and the maintenance efficiency is improved. And the maintenance difficulty is reduced.

The present invention relates to the technical field of engineering jacking construction and building displacement, and in particular to a ram device capable of automatically adjusting height and tilt angle and an application method thereof, characterized in that it comprises a ram, a sliding friction reducing device, a vertical spring, a limiting device and a protective steel pad, wherein the sliding friction reducing device is arranged above the ram, the vertical spring is arranged at the bottom of the ram, the protective steel pad is arranged at the bottom of the vertical spring, and the limiting device is arranged at the periphery of the ram for limiting the vertical and longitudinal directions of the ram. The advantages of the present invention are that it can realize automatic adjustment of height and tilt angle in dragging construction; it does not need to be processed and manufactured separately, and can adopt standard ram spring components, which are light in weight, large in deformation, convenient in installation, and can be repeatedly disassembled and assembled.

The utility model relates to an inflation valve and inflation article, and the inflation valve comprises a valve seat, a valve core and an inner cover, the valve core comprises rotation parts, moving parts, guide seats and sealing sheets which are sequentially arranged from an air inlet end to an air outlet end, the inflation valve has three states of one-way air inlet, one-way air outlet and two-way ventilation, the valve core structure design can realize the quick switching of the three states, and fundamentally solves the defects of single function and state switching by disassembling and replacing parts of the existing inflation valve.

The invention relates to a device and a method for measuring a friction coefficient of powder for additive manufacturing, in particular to measurement of a powder-powder substrate friction coefficient and measurement of a powder-substrate friction coefficient. The device comprises a shell, a funnel, an electric control valve, a laser emitting device, a laser receiving device, a powder scraping device, a powder laying device, a mechanical claw, a telescopic arm, a tension meter, an electric control translation table, a measuring platform and a powder collecting barrel. According to the invention, the components such as the electric control valve, the laser emitting and receiving device and the powder scraping device are adopted to measure the repose angle of the powder to be measured, so that automatic measurement of the powder-powder friction coefficient is realized; by controlling the mechanical claw to place the substrate, the powder laying device to lay the powder bed and utilizing the tension meter to measure the friction force, automatic measurement of the powder-substrate friction coefficient is realized, so that manual intervention is reduced, the measurement precision is improved, the two measuring devices are integrated into a whole through the hydraulic device, and the device is simplified.

The utility model relates to a normal temperature liquid loss in weight scale of automatic batching. Including base, the support of setting in base top, the feeding bucket for feeding, the metering bucket for material metering, the weighing platform component for material weighing and the metering pump for conveying material, weighing platform component installs on the base, metering bucket installs on weighing platform component, feeding bucket installs in the support top end, feeding bucket discharge pipe and metering bucket feed inlet pass through pneumatic ball valve, flange connector and soft connecting piece connection in proper order between, metering pump installs on the support, metering pump top end junction in proper order has three -way pipe, damper and oil pressure gauge. The pump body of loss in weight scale in prior art scheme when working, the pulsation can be conducted to the weighing platform through the support, leads to dynamic measurement accuracy to drop, and the liquid level detection accuracy is low, and the feeding amount control is rough, can not satisfy the technical problem of high -precision proportioning requirement.

The invention discloses a food fatty acid value pre-processing platform and a processing method thereof. The processing platform comprises a sample container, a filter, a liquid storage tube, a rotating disk, a transfer cup, a liquid crystal display screen, a distilled water container and an indicator container from left to right in sequence; the sample container, the filter and the liquid storage tube are sequentially connected to the transfer cup through a hose, the distilled water container and the indicator container are respectively connected to the transfer cup through a hose, the transfer cup is arranged on the upper end of the rotating disk, the liquid crystal display screen is respectively connected to the filter, the liquid storage tube, the rotating disk, the transfer cup, the distilled water container and the indicator container through a circuit; the fatty acid value of the sample is quickly dissolved by high-speed stirring, and the solution is directly extracted by the filter and a diaphragm pump, thereby saving a lot of time and work; the sample solution is extracted by the filter and the diaphragm pump, which improves the efficiency compared with the original slow filtration by gravity method.

The present invention provides a bone puncture needle auxiliary puncture device, including key components such as a bracket, a clamping unit, an orientation unit and a locking unit. The bracket can be stably placed on the patient's body and fixed by the clamping unit to ensure that the puncture path is stable and reliable. The orientation unit is composed of a slider and a damping rod, and can accurately adjust the angle and position of the puncture path so that the puncture hole is accurately docked with the target puncture area, reducing errors and improving puncture efficiency. The locking unit adopts a mechanical design, and the bone puncture needle is fixed in an ideal position through the cooperation of the card holder and the locker, thereby ensuring that the puncture process proceeds smoothly. In addition, the device is equipped with an ultrasonic probe, which can monitor the progress of the puncture in real time and improve safety and controllability. The entire device adopts a mechanized design to avoid relying on electronic sensors, effectively simplify the operation process, reduce maintenance costs, and has the beneficial effects of hand shake compensation, strong path stability, safe and reliable operation, and less patient discomfort.

This utility model relates to the field of photovoltaic equipment monitoring technology, and more specifically, to a simple device for monitoring the tilt of a photovoltaic support. The monitoring mechanism includes a transparent shell sphere, a filling fluid, a circular float, and a rotating shaft. The top of the float engages with the mounting groove of a fixed base, tilting synchronously with the support beam. The filling fluid fills the interior of the transparent shell sphere. A compass is embedded in the circular float. The rotating shaft is vertically fixed to the center of the lower surface of the circular float, with its lower end connected to the center of the inner bottom of the transparent shell sphere, allowing the circular float to rotate around the rotating shaft. The marking mechanism includes tilt scale lines and a baseline. The tilt scale lines are located on the outer circumference of the transparent shell sphere, with the vertical axis of the sphere as the 0° reference, marking angles to preset values ​​on both sides. The baseline is located on the upper surface of the circular float, aligned with the north-south direction of the compass, with its midpoint coinciding with the center of the circular float, used to point to the tilt scale lines. This invention solves the problems existing in the prior art.

The invention discloses a track-type end plate dimension runout detection device, which relates to the technical field of end plate detection, and comprises a detection main frame, wherein a controller is installed inside the detection main frame, a detector is installed on the lower surface of the controller, a drive assembly is symmetrically installed inside the detection main frame, a side wall of the drive assembly is provided with an end face detection mechanism, an auxiliary self-test mechanism is provided inside the detection main frame, and a display main board is installed on the side wall at the end where the detection light and the auxiliary light are irradiated, thereby providing an intuitive reference system for detection, which can break the overlap state with the auxiliary light, and utilize this intuitive visual presentation of whether the light overlaps or not, to end face the detected flatness tolerance, so that it forms an obvious fluctuation track, and then the fluctuation difference can be intuitively detected by taking pictures, thereby greatly improving the intuitiveness of the detection, and there is no need to rely on complex algorithms to interpret a large amount of data in order to determine whether there is a dimensional abnormality like traditional laser scanning.

This application relates to a molten pool camera and a laser printing apparatus, including a camera and a housing. The camera is housed within the housing, which has a casing, a top cover, a lens, and a spring plunger. The lens is located at the front end of the camera's lens, and the top cover abuts against the front end of the lens. A limiting groove is formed at the front end of the casing, and the lens is placed within the limiting groove. A latch is formed on the side wall of one end of the limiting groove, and a latching block is formed at one end of the top cover, which can be inserted into the latch. The spring plunger is mounted on the casing, and one end of the spring plunger protrudes from the side wall of the other end of the limiting groove. A positioning groove is formed on the top cover, and the spring plunger can be embedded into the positioning groove. This application utilizes the cooperation between the spring plunger and the top cover to achieve locking. The lens can be replaced and removed simply by manually rotating the top cover. It can be operated accurately even in the narrow space of the sealed cavity of the laser printing equipment, effectively avoiding operational errors caused by limited tool use and reducing the risk of accidental damage to surrounding components.

The application relates to a detection reagent for detecting escherichia coli and a preparation method, and belongs to the technical field of food safety detection. The detection reagent is a graphene-loaded targeted copper-chlorine co-doped carbon nanometer enzyme aptamer compound, is a light brown transparent liquid, and is prepared by reacting magnetic graphene, (3-dimethylaminopropyl)-3-ethyl carbodiimide, N-hydroxysuccinimide, copper-chlorine co-doped carbon nanometer enzyme and amino-modified aptamer according to a molar mass ratio of 15g:3mol:1.5mol:262.5g:0.3mol. The application carries out cascade signal amplification based on the targeted copper-chlorine co-doped carbon nanometer enzyme with high signal output and the reverse magnetic attraction strategy; when the to-be-detected substance contains escherichia coli O157:H7, the targeted copper-chlorine co-doped carbon nanometer enzyme on the magnetic carrier can specifically recognize the target strain to form a composite structure, the interference of the magnetic carrier on the signal output is eliminated through the reverse magnetic selection effect, the supernatant is taken to measure the fluorescence intensity at 456nm and the ultraviolet absorption intensity at 654nm to determine the concentration of the escherichia coli O157:H7.