33results about How to "High technical feasibility" patented technology

The invention relates to the field of communication and discloses a method for allocating service operation. The method comprises the following steps of: receiving the request information of a service requirement input by a user; matching the attributes of each service operator with the service requirement in similarity to obtain an service operator with the highest matching degree; searching a terminal that corresponds to the service operator with the highest matching degree; and issuing a service operation instruction to the terminal. The invention also discloses a device for allocating service operation. Compared with the prior art, the method and device can issue the service operation instruction by the service operator with the highest matching degree so that the service operator can reach a designated place to carry on the service operation at the designated time, thereby avoiding low efficiency of service operation.

A method for determining a progressive ophthalmic lens, comprising determining first, second and third intermediate values of regression as the strongest regression that can be applied on the front surface of the lens while keeping a mean sphere value in at least a portion of the lower part of the rear surface of the lens less or equal to, respectively, first, second and third predetermined values; and determining a value of regression (d) for the front surface as the maximum value among the first, second and third intermediate values of regression.

The present invention discloses a method and a device for processing optical signals in a computer mouse, which is related to electric digital data processing. The method is that the relative displacement vector between the mouse device and the illuminated object surface producing laser speckles is reflected by means of collecting movement information of laser speckle signals. The device for carrying out the method consists of a mouse body; inside said mouse body, an amplifying and shaping module, a direction identifying and counting module and a computer interface circuit for processing photoelectric signals are disposed and connected in sequence, characterized in that, said device further includes at least one laser device and a photo sensor for receiving laser speckle signals from the object surface illuminated by laser beams. Said photo sensor transfers the received photoelectric signals to the amplifying and shaping module. This invention has a simple structure, high technical feasibility and high precision.

A method for determining a progressive ophthalmic lens, comprising determining first, second and third intermediate values of regression as the strongest regression that can be applied on the front surface of the lens while keeping a mean sphere value in at least a portion of the lower part of the rear surface of the lens less or equal to, respectively, first, second and third predetermined values; and determining a value of regression (d) for the front surface as the maximum value among the first, second and third intermediate values of regression.

Disclosed is a progressive ophthalmic lens including a front surface and a rear surface, each surface having in each point an altitude, a mean sphere value and a cylinder value, the front surface of the lens including: —a far vision zone having a far vision reference point; —a near vision zone having a near vision reference point; —a main meridian, wherein the front surface is regressive and has: —a sphere gradient normalized value of less than 7.50·10−1 mm−1 at any point in a central portion of the lens including a portion of the main meridian (32), the far vision reference point (FV) and the near vision reference point (NV); —a cylinder gradient normalized value of less than 1.45 mm−1 at any point in the central portion of the lens.

The invention belongs to the field of heat pump technologies and refrigeration air conditioners, and relates to a solution spraying type frostless air source heat pump device. The device comprises a compressor, a four-way valve, an indoor heat exchanger, a first expansion valve, an outdoor heat exchange unit and a control unit. A heat exchanger in the outdoor heat exchange unit comprises a spraying type heat exchanger body, a second expansion valve and a finned heat exchanger body, and outdoor air firstly passes through the spraying type heat exchanger body and then passes through the finned heat exchanger body. In the heating process, refrigerating fluid from the first expansion valve flows through the spraying type heat exchanger body, the second expansion valve and the finned heat exchanger body in sequence and flows to an air suction opening of the compressor. In the refrigeration process, the refrigerating fluid discharged out of the compressor flows through the finned heat exchanger body, the second expansion valve and the spraying type heat exchanger body in sequence and then flows to the first expansion valve. Through the adjustment of the opening states of the first expansion valve and the second expansion valve, the heat pump device has the advantages that the outdoor heat exchange unit operates without frost in the heating process, the heating performance is stable, the regeneration power consumption is low, and the refrigeration operating performance in summer is improved.

The invention relates to the field of metallurgical pressure machining and coating, and provides a steel coating device and a production method of the steel coating device. Production of hot-rolled acid-pickling-free steel and coating steel of other varieties such as galvanized steel is achieved. The steel coating device comprises a reduction cooling device, a coating device and an after-coating cooling device. The hot-rolled acid-pickling-free steel with glass films can be produced through the coating device arranged on an outlet of a hot rolling finishing mill. The steel coating device has the advantages that technical feasibility is high, investment is low, and the effect is remarkable; the requirements of various industries are met; coating materials are cheap, easy to obtain and high in renewable utilization value; energy conservation and emission reduction of multiple industries can be promoted, and meanwhile sound development of downstream industries is driven; online and simultaneous production of the acid-pickling-free steel and the coating steel can be achieved on one hot rolling production line.

The invention discloses a phase calibration system and method for an oscillating reflector. The method comprises steps of by utilizing reciprocating scanning symmetrical characteristics of simple harmonic oscillation motion of an oscillating reflector, constructing scanning pattern data with light and shade complementation of pixels; when a phase difference parameter applied by a scanning controller is consistent with the actual phase of the simple harmonic oscillation of the oscillation type reflector, accurately matching the light and shade complementary pattern data of the pixel with the reciprocating motion of the oscillation type reflector, so that a continuous scanning line with uniform brightness after perfect splicing is obtained on a projection plane, and the effects of clearness,recognizability, easiness in detection and convenience in calibration operation are achieved.

The invention provides a nanometer ferric oxide / graphene composite Fenton catalytic membrane and its preparation method and application. The method first uses a solvothermal method to prepare a composite of reduced graphene oxide nanosheets loaded with nanometer ferric oxide particles. The material is based on a microfiltration membrane, and a nano-ferric oxide / graphene composite Fenton catalytic membrane is prepared by a self-assembly method. The catalytic membrane can effectively activate hydrogen peroxide in water, and then realize the efficient removal of refractory organic pollutants in water. Compared with the homogeneous Fenton reaction and the heterogeneous Fenton reaction catalyzed by nanomaterials, the catalytic membrane will The strong oxidizing species and pollutants produced by the activation are confined in the nanoscale space formed between the nanosheets, and this nanoconfinement effect increases the reaction kinetic coefficient by two to three orders of magnitude. The nano ferric oxide / graphene composite Fenton catalytic membrane prepared by the invention has the advantages of high catalytic efficiency and stable membrane flux.

The invention provides a heat storage type air source heat pump water cooling and heating system and an operation method thereof, and belongs to the field of heat pump technologies and refrigerating air conditioners. The system comprises an outdoor source side, a heat pump host, a user side and a heat storage module. The outdoor source side comprises a refrigerating medium pump, an air cooling heat exchanger and source side valves. An outlet of the refrigerating medium pump is sequentially connected with the air cooling heat exchanger and the source side valves through pipelines and then returns to an inlet of the refrigerating medium pump through a first liquid cooling type heat exchanger of the heat pump host. A heat storage side mainly comprises a first valve, a second valve, a heat storage box, a third valve and a fourth valve. One side of the heat storage box is sequentially connected with the first valve and the source side valves on the source side through pipelines and then returns to the heat storage box through the second valve. The other side of the heat storage box is sequentially connected with the third valve and the user side valve on the user side through pipelines and then returns to the heat storage box through the fourth valve. By adopting the heat storage type air source heat pump water cooling and heating system, the capacity of a heat pump system supplying heat in winter can be greatly reduced, the primary investment is lowered, and the operation efficiency of the heat pump is improved.

The invention relates to a method and a device for treating and recycling copper-containing acid wastewater of mines. The method comprises the following steps: mixing two wastewaters, namely copper pit water and raffinate, in a certain volume proportion, so as to form mixed acid wastewater; carrying out fractional precipitation on valuable heavy metals in the mixed acid wastewater by virtue of a combined medicament, so as to reduce neutralizing residue and recycle copper; recycling copper in the acid wastewater through the synergic effect generated in a metabolic process of chemical precipitates and sulfate reducing bacteria; and preparing a compound fertilizer from organic sludge generated by virtue of a biochemical method, and reusing the compound fertilizer in the rehabilitation and afforesting of the mines. According to the device for implementing the method, hydrogen sulfide circulating and absorbing equipment is additionally arranged, a reaction device is optimized, and combinedfillers of a bioreactor are optimized, so that the conversion efficiency of sulfate reducing bacteria to SO4<2-> is increased, and the repeated cyclic utilization of hydrogen sulfide is realized. A process adopted in the method is environment-friendly and has good universality to working conditions of the mines, so that the method has the advantages that the recycling rate of copper in the acid wastewater is more than or equal to 92%, the reduction amount of the neutralizing residue is more than or equal to 70%, the storage capacity pressure of tailings can be effectively reduced, and the like.

The invention discloses a method for improving the methane recovery efficiency by self-transformation of a coal seam induced by nitrogen injection. When methane is extracted from the coal seam, a production casing is lowered to the middle of the coal seam, and a nitrogen injection pipeline connected to a nitrogen source is arranged beside the production casing; a packer is further arranged, and the packer separates the top of the coal seam from a casing annulus below; perforating is performed at the top of the coal seam and the bottom of the coal seam; and a nitrogen injection valve on the nitrogen injection pipeline is opened, nitrogen is injected into the space above the packer through the nitrogen injection pipeline, and formation water in a coal-rock reservoir flows through the coal seam under the displacement of the injected nitrogen and then enters the bottom of a well through perforations at the bottom of the casing to drain water and reduce pressure. The nitrogen injected intothe coal-rock reservoir accelerates the drainage of the formation water, also reduces the partial pressure of the methane in the coal seam at the same time, and accelerates desorption of the methane which exists in the coal seam in an adsorptive state, coal matrix shrinkage is caused after the desorption of the methane, and the coal matrix shrinkage and release of the coal seam stress create new cracks so that the permeability of the coal seam is improved.