76results about How to "Not much cost" patented technology

The invention relates to a DDS acoustooptic modulation wavelength locking device and a wavelength locking method. The wavelength locking method can be realized by arranging an acoustooptic modulator and a convex lens on the basis of modulating a laser cavity in the prior art. The DDS acoustooptic modulation wavelength locking device has a concise light path, is easy to adjust, and can obviously narrow the laser linewidth and acquire enough error signal amplitude to realize stable frequency locking; due to adoption of the acoustooptic modulator, the stability of locked frequency is good and superior to that of a general voltage controlled oscillator; and due to adoption of digital frequency modulation, the DDS acoustooptic modulation wavelength locking device is flexible and convenient, and is convenient to cooperate with a digital industrial control device.

The invention discloses a preparation method for a magnesium aluminum composite board, and relates to a preprocessing method for preventing the surface of die-cast magnesium alloy from being corroded. The method is characterized by comprising the following steps: carrying out acid washing, namely dipping preprocessed magnesium alloy in an acid solution for 25-30 seconds and washing by clear water when the metal luster of the alloy is generated; phosphating, namely processing the acid-washed magnesium alloy in a mixed solution of NaOH, Na3PO4 and Na3SiO4; carrying out film forming, that is, putting the acid-washed and phosphated magnesium alloy into a Na2O2 solution for processing to form a film. The method is simple in process, lower in cost and good in anticorrosion effect, and not only can provide a good anticorrosion bottom layer for subsequent surface treatment of the die-cast magnesium alloy but also can be directly used.

The invention discloses a shearing reinforcing type semi-grouting sleeve which comprises a sleeve body, wherein the sleeve body is of a tubular structure; an elastic rubber sealing ring is arranged at the opening of one end of the sleeve body; a threaded connecting piece is arranged at the opening of the other end of the sleeve body; a grouting hole and a discharge hole are formed in side walls close to the end parts of the sleeve body; bolt holes are formed in the side wall along the sleeve body; anti-shearing bolts are arranged inside the bolt holes. The shearing reinforcing type semi-grouting sleeve has the advantages of wide material resource, simplicity in machining and manufacturing, reliability in property and the like, can greatly overcome the defects that the conventional cast iron or cast iron steel sleeve is complex to manufacture and high in cost, a mechanical milling sleeve is labor and time waste, and the like, can be widely applied to assembled type concrete structures, and has wide engineering application prospects.

The invention discloses a shearing reinforcing type full-grouting sleeve which comprises a sleeve body, wherein the sleeve body is of a tubular structure; elastic rubber sealing rings are arranged at the openings of two ends of the sleeve body; a grouting hole is formed in the side wall close to the opening of one end; a discharge hole is formed in the side wall close to the opening of the other end; bolt holes are formed in the side wall along the sleeve body; anti-shearing bolts are arranged inside the bolt holes. The shearing reinforcing type full-grouting sleeve is wide in material resource, simple to machine and manufacture and reliable in property, greatly overcomes the defects that the conventional cast iron or cast iron steel sleeve is complex to manufacture and high in cost, a mechanical milling sleeve is labor and time waste, and the like, can be widely applied to assembled type concrete structures, and has wide engineering application prospects.

The invention discloses a water and fertilizer integrated precision management and control system and a control method. The water and fertilizer integrated precision management and control system comprises a head device and a field tail device, wherein the head device comprises an irrigation system, a fertilization system and a head control system, and the irrigation system comprises an irrigationpump, an irrigation pipeline, a pressure sensor, an irrigation flow meter, a filtration system and an irrigation valve; the fertilization system comprises a fertilization pump, a fertilization pipeline, a fertilization flow meter and a fertilization valve, and the field tail device comprises a tail irrigation system and a field control system; the tail irrigation system comprises a field pipeline, a solenoid valve and a drip irrigation pipe, and the field control system comprises a field control box, a field power module, an EC sensor and a moisture sensor. According to the water and fertilizer integrated precision management and control system disclosed by the invention, the moisture sensor and the EC sensor are arranged according to the optimal water and fertilizer absorption position at the root of the crop, and the applying amount and reaching position of water and fertilizer in the actual irrigation and fertilization are detected, so that the water and fertilizer waste are effectively avoided, and thus the water and fertilizer content in the root of the crop is not too high or too low, which promotes crop growth.

The townhouse with garden is in-situ deposited concrete building and is connected transversely and withdrawn vertically, with the withdrawing direction being northward, southward or bi-directional. The upper and lower storeys are connected via stairs or elevator inside or outside the house, and each house has private garden in front it, and below each garden is the roof of the next house. The door to each house is near the private garden and public side walk. Each house may be in one, two or three storeys. The present invention has its covered arean each house greatly smaller than villan and excellent privacy and natural live environment.

Disclosed is a device for security monitoring of frontier defense and coastlines by communication optical cables. Three optical cable sets are mounted at an import section and respectively are main optical cable, an auxiliary optical cable and an emergency armored cable, wherein the main cable which is linear is mounted on border guardrails, the auxiliary optical cable is arranged blow the guardrails and is curved or zigzag, the emergency armored cable is spaced from the main optical cable by a certain distance and is embedded on a set line. Besides, the emergency armored optical cable, the auxiliary optical cable and the main optical cable are connected with a main monitoring unit of a terminal; the main optical cable is used for acquiring and positioning signals after interruption, the emergent armored optical cable is used for realizing daily communication, video, audio and data transmission task, and cameras and alarms are mounted each section or at important places of the main optical cable, the auxiliary optical cable and the emergency armored optical cable. The device has a precise positioning alarm function, and is safe and reliable. Foreign matters invade or escape when in interruption, conditions can be viewed through video of an emergency circuit, and thus, illegal intruders inside and outside frontier junctions can be prevented to the utmost extent with fewest posts.

The invention discloses a processing control technology of vacuum brazing aluminum alloy composite plate strip and foil. During melting the aluminum alloy, various metal or additive including Aluminum-Bismith master alloy with the Bismith content of 3 percent are added successively according to the chemical components requirement of ingot, and the Bismith content is controlled at 0.05 to 0.15 percent for controlling the whole components of ingot at the standard requirement scope; when rolling the brazing composite plate blank, the Aluminum-Bismith master alloy is fabricated into the thickness of 40, 50 and 60 milimeter and combined on a core material of 265, 265 and 240 milimeter, and the composite plate strips of the clad ratio of 12, 14 and 16 percent are obtained after rolling. By adopting a solder layer with new chemical composition, the invention controls the different clad ratio according to different thickness of material, thereby meeting and adapting the new requirement and new standard from the manufacture industry of heat exchanger, thus solving the leakage and cracking problem occurred in the vacuum brazing process of the aluminum heat exchanger.

The invention relates to a unit type flexo printing machine driving system, which is applied to printing machine driving system in which an edition roller and an impressing roller of a flexo printing machine are in light pressure contact, and belongs to the fields of light industrial machinery and automatic control. The unit type flexo printing machine comprises guide rollers, a main driving shaft, an impressing roller, a motor, a speed changing box, an edition roller, a driving synchronous belt or a gear and an overlapping curve roller. The unit type flexo printing machine driving system is characterized in that the impressing roller is coaxially driven through the main driving shaft, the edition roller is driven by the motor separately, and line speeds on the surfaces of the edition roller and the impressing roller are synchronous and consistent. The driving power of the overlapping curve roller 4 is provided by an edition roller motor or the main driving shaft through the gear or the synchronous belt.

The invention relates to a cloth inspecting machine based on a visual robot. The cloth inspecting machine comprises a tension control device, a visual robot image acquisition device, a meter counting device and a cloth rolling device. The tension control device, the visual robot image acquisition device, the meter counting device and the cloth rolling device work in cooperation. The production cost of enterprises is reduced, the requirements of the modern Internet of Things are met, the effect of online cloth cover detection can be achieved, and the problems of a cloth cover and even the problems of a machine can be reflected in time and eliminated in time. Invested cost is not greatly increased, and wide market promotion prospects are achieved.

The invention provides a solar power system. The solar power system comprises a solar cell module, a module installation support and a reflective panel; the solar cell module is arranged on the module installation support; the front portion of the solar cell module is provided with a first solar cell panel and the back portion is provided with a second solar cell panel; the reflective panel is used for reflecting light to the second solar cell panel. According to the solar power system, the front portion of the solar cell module is provided with the first solar cell panel and the back portion is provided with the second solar cell panel and compared with a power station which is provided with one surface solar cell module in the same unit area soil, the generating capacity is obviously improved. The solar power system is suitable for an installed or to-be-installed ground photovoltaic power station, one support supports two kinds of solar cell modules under the basis that installation costs are increased slightly, and the rate of multipurpose utilization of the installation costs is improved.