54results about How to "Large amount of collection" patented technology

The invention relates to roadside equipment with a solar collection mechanism. The roadside equipment with the solar collection mechanism comprises a photovoltaic energy and power supply unit, a microprocessor, a microwave radio frequency communicator connected with the microprocessor, receiving and transmitting antennas, an on-line data communication interface, a human-computer interface processing unit, a safety access module and a detector. Compared with the conventional technical scheme, the roadside equipment is provided with the solar collection mechanism, adopts a building block type technical framework scheme on communication frequency points and protocols and has the characteristics of energy conservation, environmental friendliness, simplicity and convenience for installation and upgrading, high compatibility and easiness in popularization. The product is applicable to various intelligent traffics and the internet of things under the urban environment, such as an electronic toll collection (ETC) system of a parking lot, an intelligent parking meter, parking management and other human, vehicle and object identification management based on radio frequency identification devices (RFID).

The present invention discloses a kind of high-quality magnesium oxide, which comprises the following components in parts by weight for preparation: 235-335 parts of light-burned heavy magnesium oxide, 150-170 parts of magnesium chloride hexahydrate, 90-100 parts of water, and 4-20 parts of corn starch , 1 to 15 parts of sodium polyacrylate, when preparing, dissolve sodium polyacrylate in water, stir evenly at room temperature to form a sodium polyacrylate solution; add magnesium chloride hexahydrate into the sodium polyacrylate solution, stir evenly; The burnt heavy magnesia and cornstarch are mixed evenly, then added to the mixed solution and stirred for 5 minutes to form a uniform cement slurry; poured into the mold to be vibrated, cured at room temperature for 24 hours, and then demoulded; after demoulding, 25 The high-strength, water-resistant magnesium oxychloride cement is obtained by curing under the condition of ±2° C. for 28 days. The preparation process of the invention is simple, the source of raw materials is abundant, the cost is low, and the industrialized production is easy to be realized.

The invention discloses a device for detecting the verticality of a pier column of a bridge and belongs to the technical field of bridge detection equipment. The device consists of an infrared distance meter 1, an angle recorder 2, an angle adjusting knob 3, a connecting bracket 4, a round steel supporting seat 5, a telescope holder 6, a level gauge 7, a telescope 8, a tripod connecting supporting seat 9, a data transmission line 10, a data recorder 11 and a telescope adjusting knob 12, wherein according to an assembling relationship, the infrared distance meter 1 is mounted on the angle recorder 2, the angle recorder 2 is mounted at the front end of the connecting bracket 4, the lower end of the connecting bracket 4 is mounted on the right side above the round steel supporting seat 5, the telescope holder 6 which is provided with the telescope 8 is mounted on the left side above the round steel supporting seat 5, the level gauge 7 is mounted at the edge of the right side above the round steel supporting seat 5, the tripod connecting supporting seat 9 is mounted below the round steel supporting seat 5, and the data transmission line 10 is connected with the infrared distance meter 1, the angle recorder 2 and the data recorder 11 respectively. The device is simple in structure and large in detection range, the effects of energy conservation and emission reduction are obvious, and a new field of the verticality detection of the pier column of the bridge is developed.

An active carbon fibrous solid phase microadsorption method used in gas-phase chromatographic is to use active carbon fiber ACF with fine adsorption to substitute organic coating solid phase extraction fiber, use natural or synthetic high polymer of asphalt or bakelite assistant with inorganic fillers to make the original fiber then to get porous active carbon fiber with strong adsorption ability and enough strength via high temperature carbonization and activation under the protection of inert or reductive gas. Said porous active carbon fiber as the inner chip of gas chromatograph GC sampler makes direct adsorption collection and GC sampling to the materials to be analysed and finish sampler and analysis after description in GC gas chamber, having got the aim of GC sampler zero solvation with better heat resistance than organic solid extraction fibers in solid micro-extraction.