66results about How to "Improve quality control" patented technology

The application discloses a spunlace non-woven fabric rewinding equipment collaborative control method and system based on the Internet of Things, and relates to the field of electric digital data processing.The method comprises the following steps: obtaining historical data and preprocessing to obtain a plurality of three-dimensional data sequence sets of roll diameter-torque-tension under normal working conditions; dividing the plurality of three-dimensional data sequence sets into a plurality of roll diameter slice sample groups and screening to obtain a non-woven fabric flat data set; performing nonlinear fitting on the non-woven fabric flat data set and constructing non-woven fabric flat upper and lower tracks; based on the non-woven fabric flat upper and lower tracks, real-time marking of an abnormal data interval in the current rewinding process is performed, and abnormality determination is performed in cooperation with an image detection mechanism; after the current rewinding process is completed, the non-woven fabric flat upper and lower tracks are updated and optimized. The application can dynamically adapt to roll diameter changes, accurately mark abnormal intervals and accurately determine abnormal working conditions in cooperation with an image detection mechanism, thereby effectively improving the quality control level of spunlace non-woven fabric rewinding production.

This application provides a temperature control method and system for vacuum wetting indium in an array field emitter, relating to the field of vacuum electronic device manufacturing technology. The method includes: obtaining the three-dimensional temperature field distribution of the surface of the field emitter using a deep convolutional neural network based on spectral radiation energy; calculating the transverse and longitudinal temperature gradients between the emitter pins based on this distribution data, and inputting this data into an evaluation model to dynamically assess the wetting uniformity; and generating multi-temperature zone heating power control commands based on the uniformity results using a proportional-integral-derivative controller, and adjusting the power output of each temperature zone to ensure the array temperature field meets the requirements for promoting uniform indium wetting. This application improves the control accuracy and reliability of indium wetting uniformity in complex three-dimensional field emitters under vacuum and high-temperature conditions.

The invention relates to the technical field of the building industry, and discloses a fabricated steel structure and an installation method, the fabricated steel structure comprises frame columns and frame beams, and the frame columns and the frame beams are connected in a matched mode; the modular node units are detachably connected with the frame columns and the frame beams respectively; the modularized joint unit comprises a first connecting plate and a second connecting plate, the sides, deviating from each other, of the first connecting plate and the second connecting plate are suitable for being connected with one ends of the adjacent frame columns correspondingly, and a box type steel column section is arranged between the first connecting plate and the second connecting plate; the two ends of the box type steel column section are connected with the first connecting plate and the second connecting plate correspondingly. The modularized joint units are further provided with I-shaped steel beam ends, and the two I-shaped steel beam ends are connected with the two ends of the box type steel column section respectively in the extending direction of the frame beam.

The invention discloses a heat treatment method of high-polarization-intensity bismuth ferrite-lead titanate-barium zirconate titanate based ferroelectric ceramic, which comprises the following steps: arranging an electrode on the surface of a bismuth ferrite-lead titanate-barium zirconate titanate based ferroelectric ceramic sintered body, and then putting the sintered body into a rapid annealing furnace; the preparation method comprises the following steps: heating to 550-650 DEG C from room temperature at a heating rate of 5-80 DEG C / s, carrying out heat preservation for 45-75 seconds, carrying out first rapid annealing, and cooling to room temperature at a cooling rate of 250-350 DEG C / s, thereby obtaining the bismuth ferrite-lead titanate-barium zirconate titanate based ferroelectric ceramic. The heat treatment method provided by the invention can rearrange defects in the ceramic, increase domain conversion switches, improve the performance of the ceramic, and improve the performance of the ceramic. Furthermore, the ferroelectric piezoelectric property of the polarized BF-PT-BZT ceramic is greatly improved, and meanwhile, the polarized BF-PT-BZT ceramic has high Curie temperature.

This invention relates to the field of battery technology, and provides a busbar with power-off and pressure-relief function, a battery cap, and a battery. The busbar includes a power-off structure, a pressure-relief structure, and a connecting section. One end of the connecting section is connected to the power-off structure; the other end of the connecting section is connected to the pressure-relief structure. The power-off structure, the pressure-relief structure, and the connecting section are integrally formed components. A first cutout structure is provided between the power-off structure and the connecting section; a second cutout structure is provided on the surface of the pressure-relief structure. The first and second cutout structures are used to reduce the thickness at corresponding locations. This busbar and battery with power-off and pressure-relief function can ensure reliable disconnection between the pressure-relief structure and the power-off structure when the internal pressure of the battery abnormally increases, while also simplifying the manufacturing process.

The application discloses a characteristic peptide of Pheretima guangxiensis and application thereof, and belongs to the technical field of biological medicines. The characteristic peptide is LLNYVDYK, EFTEEQLR, LQAELAR, ALETQVK, FVVLK, ARDDPHCCSAQDR or GILAADESTATIGK. The characteristic peptide is highly specific, and a detection method thereof is simple in operation and high in sensitivity, so that whether the Pheretima guangxiensis component is contained in the animal medicine can be accurately identified, and a scientific method is provided for guaranteeing the quality of the Pheretima guangxiensis and products thereof.

The utility model relates to the technical field of plastic welding machine manufacturing, in particular to a modular split protective door and a hot plate plastic welding machine comprising the same. According to the modular split protective door, the door frame is detachably fixed to the hot plate plastic welding machine rack and serves as a common installation foundation of the upper sliding door, the lower sliding door, the guide assembly and the power part. And under the synergistic action of the power part and the guide assembly, the upper sliding door and the lower sliding door perform the opposite / opposite displacement movement under the action of the directional dragging force. Thus, on one hand, the modular split protective door is formed in a prefabrication workshop, and overall assembly is easy to realize, so that the field installation time and workload of the modular split protective door are effectively reduced, and meanwhile, quality control and debugging of the modular split protective door are facilitated; and on the other hand, in the closing and opening processes, the upper sliding door and the lower sliding door independently execute directional sliding motion, and extra horizontal space is not occupied.

This invention discloses a compound preparation for treating vascular dementia and its preparation method. The active pharmaceutical ingredient consists of protopanaxadiol and gallic acid in a 1:1 mass ratio, and the dosage form is liposomes. The preparation method includes extraction, mixing, liposome preparation, and optional freeze-drying steps: protopanaxadiol and gallic acid are extracted and purified from ginseng rhizome and Terminalia chebula fruit, respectively. After mixing, they are combined with phospholipids and cholesterol to prepare a lipid membrane. The membrane is then homogenized by hydration, low-temperature ultrasound, and high-pressure microfluidic jet to obtain a homogeneous liposome suspension, which can be further freeze-dried into a freeze-dried powder. The 1:1 composition of protopanaxadiol and gallic acid targets multiple points on the pathological mechanism of vascular dementia, showing significant therapeutic effects and broad application prospects. This preparation uses a liposome dosage form to improve the bioavailability of the active ingredient, the preparation process parameters are controllable, the active ingredient has high purity, the liposomes have uniform particle size, high encapsulation efficiency, and good stability.

The invention provides a stewed noodle automatic production line product defect analysis method and system based on multi-source detection, and relates to the technical field of product defect detection.The stewed noodle automatic production line product defect analysis method comprises the steps that a plurality of product defect detection nodes are inserted into a stewed noodle automatic production line, and a product image sequence is obtained; meanwhile, collecting real-time production data, extracting rheological characteristic parameters of the stewed noodle dough, performing multi-dimensional characteristic space mapping comparison with an intrinsic characteristic parameter set of a product quality sample to obtain multi-dimensional characteristic space mapping comparison information, and performing defect prediction and defect grading judgment in combination with a product image sequence, so as to obtain a multi-dimensional characteristic space mapping comparison result. And outputting the product defect grade and the risk coefficient, and performing product defect reminding. The technical problem that the dough defects cannot be comprehensively and accurately analyzed due to the lack of systematic modeling and dynamic sensing capabilities for the product quality evolution process in the prior art is solved, and the technical effects of improving the dough defect detection accuracy and enhancing the production line operation stability and the product quality consistency are achieved.

The present application provides a ginseng quality nondestructive evaluation method based on hyperspectral and X-ray technology, belongs to the field of spectral analysis technology, and comprises the following steps: collecting information of a complete ginseng sample by using hyperspectral and X-ray technology, and integrating complementary information from the two devices by a modeling method of ensemble learning. The present application provides a fast, nondestructive and accurate ginseng quality evaluation method, and solves the problems of low accuracy of experience identification analysis, complex and time-consuming pretreatment of wet chemical analysis method, and difficulty in adapting to batch rapid detection due to sample crushing treatment of near-infrared spectral analysis technology.

The utility model relates to bridge engineering technical field, and disclose a kind of steel box girder and concrete pier column consolidation structure, including steel box girder, concrete pier column, shear nail and the adjusting member for adjusting the elevation of steel box girder installation, concrete pier column top is reserved with shear key, steel box girder bottom is equipped with for with concrete pier column top socket joint connection's notched, concrete pier column top outer circumferential wall is equipped with the slope of being inserted easily, concrete pier column top is inserted in the inside of notched, adjusting member includes jacking corbel and jack, jacking corbel is connected by bolt with the reserved planting bar on the outer wall below concrete pier column, jack is installed in jacking corbel top, jack top and steel box girder bottom are abutted. The present application is simple in structure, high in precision of factory prefabrication, force transmission is direct in socket design, stress concentration is small, and the elevation of section member is accurately adjusted, convenient for construction, applicable to complex environment and large-span bridge.

This invention discloses a method and system for defect identification of molybdenum-rhenium alloy pipe fittings based on high-definition microscopic images. The method includes the following steps: acquiring high-definition images of the molybdenum-rhenium alloy pipe fittings using a high-definition microscope; preprocessing the high-definition images of the molybdenum-rhenium alloy pipe fittings to obtain an image of the molybdenum-rhenium alloy pipe fittings to be detected; performing region growing algorithm processing on the image of the molybdenum-rhenium alloy pipe fittings to be detected to obtain a defect region to be detected; identifying defects in the defect region to be detected to obtain the type of defect; and determining that the molybdenum-rhenium alloy pipe fittings has a defect problem based on the type of defect.

This invention discloses a method and system for designing tunnel smooth blasting charge schemes, relating to the field of tunnel blasting engineering technology. The method includes: collecting and preprocessing basic parameter data required for tunnel smooth blasting design; calculating initial design parameter values ​​for the smooth blasting charge based on smooth blasting design theory and a pre-set parameter calculation model, generating an initial design scheme; inputting the initial design parameter values, cross-sectional geometric parameter data, surrounding rock condition parameter data, explosive parameter data, and historical blasting effect feedback index values ​​into a pre-trained neural network optimization model, outputting optimized smooth blasting charge design parameter values; automatically updating the peripheral hole layout and charge structure in the design scheme based on the optimized design parameter values, generating and outputting the final tunnel smooth blasting charge design scheme. This invention enables intelligent and adaptive design of tunnel smooth blasting charge parameters, improving engineering applicability and molding quality.

The utility model discloses an evaporator for medicine liquid continuous evaporation concentration relates to the medical production technical field, including the original storage tank, the bottom outer wall fixedly connected with the conveying pump of original storage tank, the output of conveying pump is connected with buffer tank through pipeline, buffer tank is connected with evaporating tank through pipeline, evaporating tank is connected with collection jar through pipeline, the utility model provides an evaporator for medicine liquid continuous evaporation concentration, and the liquid enters buffer tank and is scattered by multiple spoiler, reduces the feeding impact and forces to form the disorder turbulence, makes the fluid inside mutual counter -attack, thereby eliminates the periodic pressure pulse of conveying pump, thereby avoids the liquid level of evaporation cavity fluctuation, vacuum degree and heat exchange temperature frequent fluctuation because of pumping pulse, and prevents the concentration deviation of concentrated product, the problem of batch consistency difference, significantly improves the stability and quality control level of medicine liquid concentration.

The utility model discloses a kind of defect positioning device of non-woven fabric, belong to non-woven fabric production equipment technical field, the device includes the defect detection positioning assembly on non-woven fabric slitting and picking waste equipment, it contains color difference sensor densely arranged in cloth surface width, back light plate on equipment and the indicator light of back light plate periphery, when color difference sensor detects defect, output is set to stop signal according to pre-set stop distance, so that defect accurately stays in back light plate area;Indicator light and sensor detection point position one-to-one correspondence, when detecting defect, corresponding horizontal position indicator light is lit, the device can quickly and accurately locate defect, improve detection efficiency and accuracy, facilitate operator processing, suitable for the defect detection positioning of multiple non-woven fabric.

This invention discloses a method for monitoring the welding process quality of a volute housing seat ring, comprising deploying a digital dial indicator and configuring a wireless data acquisition module to establish a deformation data acquisition and transmission link; acquiring deformation data in parallel through multiple channels of the link and performing preprocessing; constructing a deformation monitoring model based on the preprocessed data, calculating the risk rate of a single measuring point, and then calculating the joint risk rate of multiple measuring points; and synchronizing the data to multiple terminals and performing interactive adaptation. This invention replaces manual reading with a high-precision digital dial indicator and wireless automatic acquisition, achieving objective and accurate acquisition and real-time early warning of deformation data; by constructing a deformation monitoring model and a quantitative model of the joint risk rate of multiple measuring points, it accurately characterizes the deformation correlation of multiple measuring points, realizing quantitative prediction of the overall structural deformation risk and proactive process guidance; and through multi-terminal data synchronization, it achieves traceability of the entire welding cycle data of the volute housing seat ring and multi-scenario adapted closed-loop monitoring, while being compatible with existing processes, thus improving the level of quality control.

The application discloses a thin layer chromatography method for isolineatin and procyanidin B2 in folium artemisiae and products thereof, and comprises the following steps: using a methanol-water solution with pH of 10-11 as an extractant to prepare a test sample solution; using methanol as a solvent to prepare a control sample solution; respectively sucking the test sample solution and the control sample solution, spotting on a thin layer plate, using dichloromethane-normal propyl alcohol-water-glacial acetic acid as a developing agent to develop, and observing under a UV lamp after air-drying. The application successfully establishes a thin layer chromatography rapid detection method for isolineatin and procyanidin B2 in folium artemisiae and products thereof, which is not only simple in operation, but also can realize semi-quantitative analysis of isolineatin and procyanidin B2, and provides a powerful detection means for quality control of folium artemisiae and products thereof.

This invention discloses a compound leavening agent and its application, relating to the field of food processing technology. The compound leavening agent is composed of glucono delta-lactone and sodium bicarbonate in a mass ratio of 1:0.35~0.5. The compound leavening agent provided by this invention has a high degree of synchronization between its peak gas production and the steaming heating process, allowing the dough to be directly shaped, steamed, and cooked after kneading, significantly improving processing efficiency. The formula contains only two components, is free of aluminum, phosphorus, and fillers, making it safe, harmless, low-cost, and simple to process. The resulting pasta products have a smooth surface, fine pores, a pure wheat aroma, and no off-odors. The finished product has stable and uniform quality, is easy to operate, and is suitable for rapid and standardized production in chain restaurants, central kitchens, and home settings.

The present application belongs to the technical field of pharmaceutical analysis and quality control, and relates to a detection method for the content of a lobaplatin intermediate, in particular to a detection method for the content of trans-1,2-diaminocyclobutane diiodoplatinum (II), which is an HPLC method, and the detection conditions are as follows: octadecyl bonded silica is used as a filler, an ammonium acetate solution is used as a mobile phase A, and a mixed solution of the ammonium acetate solution and acetonitrile is used as a mobile phase B, and gradient elution is performed. The detection method has strong specificity, good linear relationship, high accuracy and high precision. The present application has important guiding significance for the quantity of material feeding in subsequent reactions, the improvement of the yield and purity of lobaplatin by establishing the detection method for the content of the lobaplatin intermediate trans-1,2-diaminocyclobutane diiodoplatinum.

This invention discloses a precast staircase connection structure and construction method. The precast staircase connection structure includes platform sections at both ends of the precast staircase, with platform grooves on each platform section. The composite stair beam includes a concave composite bottom beam and a cast-in-place connecting section. The top surface of the concave composite bottom beam has a bottom beam groove, and the cast-in-place connecting section is located within the platform groove and the bottom beam groove. The concave composite bottom beam and the cast-in-place connecting section, together with the platform sections of the precast staircase, form an integral stair beam, providing support. The connection nodes exhibit excellent overall performance, high safety and reliability, and facilitate the installation of precast concrete staircases, improving the prefabrication level and efficiency of building structures. It transforms the cast-in-place structure into precast component units, facilitating processing in component factories. T-shaped steel plate embedded parts can be used, reducing the amount of wet concrete casting work and lowering the difficulty of connection work. Furthermore, T-shaped steel plate embedded parts are more suitable for standardized factory production, which is beneficial for the quality control of precast components.

The utility model discloses an integrated vision detection function's all -in -one inkjet printer relates to inkjet printer technical field, include: inkjet printer body, color touch -sensitive screen and front panel, AI vision sensor, rear bracket and front bracket, the outer wall of front panel is inlayed and installed electric slide rail, the output of electric slide rail is installed rear bracket, and the inner wall of rear bracket and front bracket is inlayed and installed clamping electric pole, the output of clamping electric pole is installed clamping block. The utility model discloses through being installed with vision detection mechanism, the interval between front bracket and rear bracket is adjusted to the appropriate position, then clamping electric pole work drives clamping block to remove, will utilize the clamping block in front bracket and rear bracket and fix the inkjet head, and electric slide rail can drive the position of front bracket and rear bracket and move up and down, adjusts the position of inkjet head according to different inkjet position.

The invention discloses a device for removing perfluorinated and polyfluorinated organic matters in experimental water, which comprises a water feeder, a purification device, a water storage device and an external protective shell, and is characterized in that the water feeder pumps water produced by a laboratory water purifier into the purification device at a constant speed; the purification device is filled with a solid-phase extraction matrix composed of divinyl benzene and glycidyl methacrylate copolymerized porous polymer microspheres and a perfluoroalkyl derivatization layer, and perfluorinated and polyfluorinated organic matters (PFCs) in experimental water can be efficiently and selectively adsorbed; the water storage device is used for storing purified water, and a dual-wavelength ultraviolet lamp is arranged in the top of the water storage device to realize a sterilization function; and the external protective shell realizes fixation and integration of all parts, and has convenience in movement. The method can effectively remove PFCs in experimental water, does not introduce extra impurity pollution, can be matched with various laboratory water purifiers for use, is simple and convenient to operate and low in cost, provides technical guarantee for laboratory quality control of PFCs detection, and solves the technical problem that an existing pure water preparation method cannot effectively remove PFCs.

The utility model discloses a kind of automobile parts welding pressure mechanism, it is related to automobile parts welding fixture field, and this kind of automobile parts welding pressure mechanism includes bottom plate, supporting seat is fixed on the middle position of bottom plate top surface, and bottom plate top surface is located at the both sides of supporting seat and is provided with several groups of clamp;This kind of automobile parts welding pressure mechanism is driven by the cooperation of linear motor and guide rod cylinder, realizes the automatic transfer of welding workpiece, specifically, linear motor moves along the length direction perpendicular to bottom plate, drives support strip and transverse plate transverse displacement, and guide rod cylinder makes it accurate with the bottom surface of welding finished piece by lifting support strip through extension end, this structure significantly reduces the demand of manual intervention, realizes seamless connection of welding-unloading process, effectively shortens production rhythm, improves production line automation level.

The application discloses a kind of multi-robot intelligent manufacturing cooperation systems, it is related to industrial robot control and intelligent manufacturing technical field, solve the technical problems of the heterogeneous compatibility difficult of prior art multi-robot system, dynamic response delay is high, collaborative obstacle avoidance precision is insufficient, lack of quality closed-loop management and control and weak fault-tolerant capability.This system uses cloud edge end distributed four-layer architecture, including edge collaborative control layer, multi-robot cluster execution layer, whole-process sensing layer and digital twin closed-loop optimization layer, supporting TSN+5G double-redundancy communication bus module.The application realizes the plug-and-play adaptation of heterogeneous robots, millisecond-level dynamic task scheduling and fault takeover, high-precision collaborative motion obstacle avoidance, and quality closed-loop optimization of whole-process processing, and can widely adapt to the flexible production needs of discrete manufacturing scene, greatly improve the efficiency of production line operation, processing yield and continuous operation stability.

This application provides a method and system for quality monitoring of Cordyceps militaris fermented beverages based on image recognition, belonging to the field of food quality monitoring technology. By collecting dynamic change data on temperature, pH value, and dissolved oxygen concentration during the fermentation process of Cordyceps militaris, and establishing a dynamic benchmark model, the current fermentation state can be determined in real time. Simultaneously, polarized structured light is used to penetrate the bottled beverage and acquire images to generate microscopic optical characteristic parameters of the beverage's interior. Based on this, the detection sensitivity of the microscopic optical characteristic parameters is dynamically adjusted according to the current fermentation state, and the dynamic benchmark model and microscopic optical characteristic parameters are integrated to calculate a potential quality risk index, thereby assessing the long-term quality risk of the beverage. This application can effectively identify potential quality problems caused by subtle process fluctuations during fermentation, thus preventing potentially hazardous products from entering the market and significantly improving the quality control level of Cordyceps militaris fermented beverages.

The invention relates to a monocyte simulation composition, a preparation method, a quality control substance and a quality control method. The mononuclear cell simulation composition comprises mononuclear cell simulation particles stored in a preservation solution, the volume ratio of the mononuclear cell simulation particles in the composition is 50% or above, the mononuclear cell simulation particles are obtained by treating neutrophils or lymphocytes separated from blood of mammals, and the mononuclear cell simulation particles are used for simulating the mononuclear cells or the lymphocytes. When the mononuclear cell simulation particle is tested by a hematology analyzer, the mononuclear cell simulation particle has the same or similar light scattering characteristics as human mononuclear cells, and the light scattering characteristics at least reflect the complexity of cell contents. The mononuclear cell simulation particles are independently prepared, so that the particles have good consistency and stability, and the obtained composition is small in batch-to-batch difference when serving as a quality control substance, so that the quality control of a hematology analyzer is facilitated, and the reliability of clinical examination of the hematology analyzer is improved.

The application belongs to the technical field of medicine detection, and particularly relates to a quality detection method of a medicine composition for treating qi stagnation and blood stasis arthralgia. The quality detection method of the medicine composition for treating qi stagnation and blood stasis arthralgia comprises thin layer identification of Sanqi, thin layer identification of Xuduan, thin layer identification of Chishao, thin layer identification of Sumu, thin layer identification of Gushu Bu, content determination of Chuanxuduan saponin VI, emodin and chrysophanol. The application is a medicine composition applied in clinic for many years, and has no quality control method. Through in-depth research, the thin layer identification and content determination method of the composition is established, and the method is verified through methodological experiment. The method has good repeatability, high accuracy, strong stability, simple and fast operation, and can be used as the quality control standard of the medicine composition, so that the product quality can be better controlled.

The invention discloses a PCB general health management method based on zero-ohmic resistor time-varying information, and the method comprises the steps: densely packaging a plurality of zero-ohmic resistors on a PCB, carrying out the reverse deduction of the stress damage condition of a PCB product through monitoring the change of the resistance value of the zero-ohmic resistors, recognizing the damage degree of the product in the whole process from the crack initiation period to a permanent fault, and carrying out the recognition of the damage degree of the product. The zero-ohm resistor is used as a circuit function element to be embedded in PCB wiring, non-intrusive monitoring is achieved, the installation cost of additional devices is avoided, continuous work can be started from the production stage, the whole service life cycle of the product is throughout, the limitation that a traditional strain gauge can only be used in a specific test stage is broken through, and the test efficiency is improved. The whole-course stress damage analysis from manufacturing, transportation to actual use is provided for the product, high-density point distribution can be achieved through the micro-packaged zero-ohm resistor, a data sampling set for whole-plate stress damage analysis is formed through multi-point data association analysis, and therefore the stress concentration area is accurately positioned, and compared with a traditional single-point measurement method, the method has the advantages that the measurement accuracy is high, and the measurement cost is low. And the monitoring precision and reliability are obviously improved.

The invention discloses a 5G network construction quality monitoring method based on big data analysis, and the method comprises the steps: carrying out the multi-modal data collection of a 5G base station process through a mobile terminal collection device, carrying out the offline image recognition based on a lightweight model, and generating a supervision data package; constructing a hierarchical supervision rule knowledge base including a specification standard layer, a historical experience layer and a manufacturer guide layer, and establishing a probability association model of construction parameter deviation and acceptance results in combination with an improved weighted time sequence association mining algorithm; a double-threshold risk assessment mechanism is adopted, when a rule threshold and a probability risk threshold are triggered at the same time, a risk level is assessed through a multi-dimensional risk scoring model, and a graded early warning report is generated; a structured rectification notice is generated for the quality problem, a rectification process time sequence verification chain is constructed based on a timestamp and a digital signature, and closed-loop management is realized through comparison between design parameters and an actual state; and establishing a decision feedback optimization ring, and continuously optimizing probability correlation model parameters and a supervision rule knowledge base.

The application belongs to the technical field of pharmaceutical analysis, and particularly relates to a detection method of ammonia in methamphetamine, which is a convenient, efficient and accurate detection method for solving the problem of ammonia detection in methamphetamine. The method uses gas chromatography to detect the content of ammonia in methamphetamine, has low detection cost, and is convenient for quality control of methamphetamine. The method is convenient, efficient and accurate, and fully meets the guiding principles of method verification of Chinese Pharmacopoeia in terms of system applicability, repeatability, specificity and accuracy, and can be used for quality control of methamphetamine.