17results about How to "Obvious cost advantage" patented technology

This invention discloses a method for preparing high-transparency tamarind polysaccharide gum through decolorization and deodorization. A combined purification process of enzymatic hydrolysis-sedimentation-chemical degradation-solvent washing-ultrafiltration is employed. Enzymatic hydrolysis degrades large molecules of proteins and fats in the extract into smaller molecules. Sodium hypochlorite is used for chemical degradation, oxidizing aldehydes and ketones in the extract into carboxylic acids. Finally, organic solvent washing and ultrafiltration purification remove impurities generated during enzymatic hydrolysis and chemical degradation, ultimately yielding high-transparency, odorless tamarind polysaccharide gum. The final product is white, with a transmittance of up to 95.4% at a 1% concentration, and is completely odorless, significantly improving product quality. This preparation process is simple, operates under mild conditions, and is suitable for industrial production.

This invention discloses a method for preparing a low-absorption tantalum oxide thin film and its application in DWDM filters. The method includes the following steps: S1, placing the substrate in the reaction chamber of a mid-frequency magnetron sputtering system and evacuating the reaction chamber; S2, introducing argon and oxygen into the reaction chamber; S3, using a tantalum target, turning on the power of the mid-frequency magnetron sputtering system for pre-sputtering; S4, performing a second sputtering; S5, vacuum cooling to obtain a tantalum oxide thin film formed on the substrate. The tantalum oxide thin film prepared by this invention has an extinction coefficient k ≤ 5×10⁻⁶ in the 1550nm band, which is about two orders of magnitude lower than that of the prior art (k≈10⁻⁴). This invention does not require an ion source and can be achieved using only mid-frequency magnetron sputtering, resulting in low equipment requirements and significant cost advantages. A 100G DWDM filter made using the thin film prepared by this invention has an insertion loss ≤0.1 dB, which is better than the 0.2 dB of the prior art.

The utility model discloses a kind of clamping spring installation jigs, it is related to connector assembly technical field.The jig includes handheld part, push rod part, first spring and second spring.The shell of handheld part is equipped with through first passage;Push rod part is slidably arranged in passage, and it is made of hand push rod and mounting rod that can slide relatively, and mounting rod end is used to sleeve joint clamping spring to be installed.First spring provides the overall reset force of push rod part, and second spring is sleeved between two rods, stores energy and releases when mounting rod is positioned by clamping spring to support clamping spring.Optimal solution includes: tail cap is equipped with threaded connection at the tail of hand push rod;Two rods are equipped with guide disc part;The head of shell is additionally provided with limiting component with adapter part, for matching photovoltaic connector port.The utility model is simple in structure, low in cost, and realizes accurate installation of clamping spring by double spring cooperation, solve the problem of low efficiency of manual installation under small-batch scene.

This invention discloses a short-process rapid solidification / powder metallurgy technology and its applications. The short-process rapid solidification / powder metallurgy technology of this invention includes the following steps: Step 1: Using metal wire or powder as raw material, a bulk blank with a thickness of 1-10 mm is deposited on a substrate using thermal spraying technology; the metal is selected from magnesium, titanium, copper, iron, nickel, zinc, aluminum, or their alloys; Step 2: The bulk blank is thermomechanically processed to obtain a sheet product; the thermal spraying technology includes flame spraying, supersonic spraying, arc spraying, plasma spraying, or cold spraying; the thermomechanical processing includes hot rolling, hot extrusion, or hot forging. This invention significantly shortens the preparation process, consumes less energy, has low overall production costs, and has wide applicability, and can be applied to the preparation of metal matrix composites, ultrafine-grained metal materials, heterostructure metal materials, layered structure metal composites, etc.

This invention discloses a coal gangue grouting and filling material with high rheological resistance and resistant to bleeding, its preparation method, and its application, relating to the field of mine filling material technology. The grouting and filling material, by mass percentage, comprises: 70%~75% coal gangue, 0.55%~2.3% composite rheology modifier, and the balance being water; wherein the composite rheology modifier includes an air-entraining agent and a dispersant, with a mass ratio of (90~99):(1~10); the air-entraining agent is a surface-active foaming material, and the dispersant is a phosphate additive. In its preparation, coal gangue is first mixed with water and stirred to obtain an initial slurry; then the air-entraining agent and dispersant are mixed to prepare the composite rheology modifier; finally, the composite rheology modifier is added to the initial slurry and stirred until homogeneous to obtain the grouting and filling material. This grouting and filling material uses coal gangue as the main raw material, has a simple preparation process, and possesses excellent fluidity, stability, and pumpability.

This invention discloses a method for manufacturing high-precision fine-line printed circuit boards, belonging to the technical field of printed circuit board manufacturing. The method includes: substrate surface treatment; high-precision screen printing pattern transfer, achieving a printing accuracy of ±10μm through a high-tension stainless steel screen, nano-modified anti-etching ink, and a high-precision vision alignment system; post-curing treatment to form an etch-resistant protective layer; segmented etching process with an etching factor of 8 or higher; ink removal and post-processing. This invention innovatively applies screen printing technology to the transfer of fine-line patterns. Through systematic optimization of screen production, ink formulation, printing parameters, and etching processes, it breaks through the precision limitations of traditional screen printing technology, enabling stable manufacturing of fine lines of 0.25mm / 0.25mm and below, effectively solving the open / short circuit problem caused by side etching, achieving a yield rate of over 98%, and significantly reducing production costs. This method is suitable for the mass production of rigid, flexible, and rigid-flex PCBs.

This invention relates to the field of welding automation technology, and more particularly to a device specifically designed for automatic welding of U-shaped welds. The device includes a work platform, a welding torch movement adjustment mechanism, a welding torch posture adjustment unit, a welding system, and a control system. The control system integrates an inflection point steering control module, which, through software-set trajectory settings, controls the welding torch posture, current, voltage, and welding speed during welding. This allows the invention to achieve smooth, continuous, and automatic welding at the inflection points of U-shaped welds without requiring pauses, adjustments, or repeated arc striking. This invention significantly increases welding efficiency, reduces welding difficulty, and improves welding quality.

This invention discloses a method and device for monitoring patchy fog based on a visible light image sensor and a point laser, belonging to the field of atmospheric visibility monitoring technology. The device includes a linearly calibrated visible light image sensor, a point laser emitter mounted parallel to the sensor's optical axis, and a synchronization control and data processing unit. The core of the method lies in: synchronously controlling and alternately acquiring image pairs of the laser being on and off, performing differential analysis to eliminate background interference, and obtaining a pure laser atmospheric scattering signal; integrating along the laser spot normal direction to obtain an initial brightness profile curve; based on the fixed spatial pose relationship between the sensor and the laser, mapping the brightness curve in image coordinates to a corrected brightness curve in real spatial distance coordinates through a geometric correction model; calculating the mean and variance of the corrected brightness curve, and calibrating it using standard instruments; and finally simultaneously obtaining the average path visibility value and the patchy fog intensity index. This invention is low-cost, has strong anti-interference capabilities, and can effectively achieve quantitative identification and spatial positioning of patchy fog, making it suitable for large-scale deployment in scenarios such as highways.

This invention belongs to the field of sensor and machine learning technology. It proposes a simulation test system and method for the mechanical properties of rock joints based on the principle of equivalent body force field. The main components include: constructing a geomechanical similarity model based on the principle of equivalent body force field, including a base and a rock mass physical model. When the base moves relative to the interface of the rock mass physical model, the friction between the base and the bottom surface of the rock mass physical model generates uniformly distributed shear stress, which generates equivalent body force intensity inside the rock mass physical model; collecting multidimensional sensing data when the base moves relative to the interface of the rock mass physical model; automatically identifying the rock mass joint extension trajectory based on the multidimensional sensing data and using an improved U-Net machine learning model; obtaining displacement field data through an improved particle image velocimetry combined with an optical flow algorithm; using a Bayesian inference inversion model to invert the mechanical parameters of the joint surface; and evaluating the uncertainty of the inversion results using the Markov chain Monte Carlo method.

This invention discloses an online detection method and device for the trajectory of sphere polishing, relating to the field of precision machining online detection. The method includes: S1, acquiring a continuous image sequence during the sphere polishing process at time i using a high-speed camera; S2, preprocessing and feature recognition of the continuous image sequence; S3, a rotation angular velocity measurement module calculating the rotation angle and rotation angular velocity to obtain theoretical values; and a three-dimensional trajectory reconstruction module radially projecting discrete trajectory points onto a sphere surface determined based on the first point, to achieve visualized three-dimensional trajectory reconstruction under geometric constraints, thus completing the online detection of the sphere polishing trajectory. This invention combines a transparent grinding disc structure, a multi-view observation layout, and a dedicated image processing algorithm to achieve real-time, high-precision, and high-efficiency online detection of the sphere's rotational motion parameters and trajectory during the polishing process.

This invention belongs to the field of power factor correction technology for switching power supplies, specifically relating to a wide-load power factor correction circuit and power module. It includes a rectifier circuit, the input of which is connected to the power supply; and a π-type filter network comprising a first valley-fill circuit, an energy storage inductor, and a second valley-fill circuit connected in series. The input of the first valley-fill circuit is connected to the output of the rectifier circuit, and the output of the second valley-fill circuit is connected to the load. This invention addresses the problem of a narrow power factor correction range. By widening the conduction angle through a double valley-fill structure and combining it with a π-type filter network to suppress high-frequency harmonics and optimize the current waveform, the input current is made closer to a sine wave. Actual measurements show that the power factor remains between 0.91 and 0.95 within a range from full load to 10% light load, without requiring additional control chips, as all components are passive, significantly improving reliability. Compared to active PFC circuits, it offers a clear cost advantage.

The application discloses a coil device oil leakage detection method and device, and relates to the technical field of oil leakage detection. The method comprises the following steps: taking a picture of the oil level and oil temperature of a coil device through a monitoring device, and recording the oil level and oil temperature as reference values; regularly taking an image of the coil device; judging the oil volume and temperature change according to the image of the coil device, determining a normal oil level range, and issuing a warning when the normal range is exceeded; if the oil level exceeds the normal range, collecting at least three times to confirm the abnormality; after the confirmation, taking the abnormal oil level and oil temperature as the reference, and retesting, and if the abnormality occurs again, the coil device is determined to have an oil leakage fault; the method can timely inform the oil leakage risk of the device and accurately diagnose the risk, and has good application effects in terms of timeliness and accuracy. The method fully solves the problems of untimely manual inspection and subjective misjudgment in defect discovery.

A zinc-based high-strength outer sheet with excellent formability and equipped with a GI or ZM coating, and its manufacturing method, are disclosed. The chemical composition of the steel, by mass percentage, is as follows: C: 0.04%–0.1%, Si: 0.2%–0.5%, Mn: 1.2%–1.8%, P≤0.02%, S≤0.01%, Al: 0.02%–0.05%, Cr≤0.5%, Nb≤0.02%, N≤0.006%, with the balance being Fe and unavoidable impurities. The content of Si, Mn, and Cr satisfies the condition: (Mn+Cr)−2×Si≥0.5%. This method, through optimized composition design and precise control of the annealing-galvanizing process, synergistically solves the core contradiction of achieving high strength, high formability, and high surface quality in high-strength outer sheets. In particular, it effectively inhibits surface oxidation of the substrate, ensuring the uniformity, density, and adhesion of the coating, and can stably produce high-quality outer sheet products suitable for pure zinc (GI) and zinc-aluminum-magnesium (ZM) coatings.

The application discloses a one-pot preparation method of 3,4,5-trifluorobromobenzene. In an organic solvent, 2,6-difluoroaniline is used as raw material to obtain the product 3,4,5-trifluorobromobenzene through three steps of bromination, diazotization and fluorination at a certain temperature. The method has the advantages of multiple raw material sources, obvious cost advantage, safety and convenience, high total yield, less waste and the like, and is beneficial to industrialization.

The application provides a single firewire communication method based on current detection and thyristor modulation, comprising: calibrating zero-crossing timing reference and reference current; establishing mapping of data symbols and thyristor conduction angle and dynamically adjusting according to loop current size, encoding to-be-transmitted data to generate encoding sequence; converting the encoding sequence into a thyristor trigger signal to drive the conduction angle to conduct at the corresponding moment, generating stable current fluctuation through conduction angle modulation and transmitting to the receiving end; the receiving end collects loop current fluctuation signals in real time and processes them through multi-stage filtering to obtain effective current signals, initializes decoding threshold according to the reference current, identifies the conduction angle change corresponding to the effective current signals to restore the symbols, and outputs after checking the symbols. The thyristor specific conduction angle is used for data encoding, the small change of the detected loop current is used for data decoding, and the problems of unstable communication and high decoding error rate in the single firewire small current scene are solved.

The application discloses an electronic brake shell and a processing method, and relates to the technical field of electronic brakes, which comprises a plastic shell, a signal terminal, a power terminal and two kinds of sealing glue. The signal terminal and the power terminal are directly injection molded on the plastic shell, and the signal terminal and the power terminal are designed with three different specifications, a total of 38. The plastic shell further comprises a motor phase lead frame and a resolver lead frame, which are installed inside the plastic shell. The plastic shell further comprises a stroke sensor terminal and a grounding terminal. The grounding terminal specifically comprises a mechanical holding terminal and a grounding spring. In the application, the resolver lead frame adopts a pre-injection molding and cutting method, which greatly improves the pin efficiency, stabilizes the product quality, not only meets the production capacity demand of customers, but also reduces the manufacturing cost of products, and has obvious cost advantage in stamping, electroplating and inlay injection molding, and can greatly shorten the molding cycle.

The utility model relates to a detection device, especially a high -speed detection device of big cylindrical battery, including bracket, first platform and second platform, the bracket linear array is provided with the slot of holding, first platform set up in one side of bracket, first platform sliding connection has first sliding block, first sliding block can be close or far away from the bracket, first platform top is provided with first sensor, first sliding block, first sensor with the slot of holding one -to -one correspondence, second platform set up in the other side of bracket, second platform sliding connection has second sliding block, second sliding block can be close or far away from the bracket, second platform top is provided with second sensor, second sliding block, second sensor with the slot of holding one -to -one correspondence. The utility model discloses a high -speed detection device of big cylindrical battery, low in cost, and high -efficient detection.