54results about How to "Avoid backtracking" patented technology

A method is provided for creating sequences for testing software created from data flow models and subjected to automatic test conditions by a data processing device and an executable test case generator software, whereby a test plan made up of individual test cases is generated by the test case generator software for the software to be tested. For each model block, test-relevant algorithms are implemented the form of a test case algorithm and a backward follow-up algorithm. In each test case, a value range for each of its input signals is assigned to a model block, by the test case algorithm. Each of such value ranges is followed up by means of the backward follow-up algorithm, in the system to be tested, through the individual blocks, up to the inputs of the system to be tested, and the results are checked and stored in memory.

The invention discloses a method, a system, an apparatus and a storage medium for isolating user identity information, belonging to the technical field of block chains. The method comprises the following steps: a user generates a public key and a private key through a block chain, the user's public key and user's identity information are stored in the block chain; the block chain generates a plurality of different account IDs for the same user; the user registers on the application through the account ID. The invention also includes the corresponding system, apparatus and storage media, in view of the problem of user information disclosure, the invention can protect the privacy of the user and prevent the privacy of the user from being disclosed.

The invention provides a route prefix processing, lookup, adding and deleting method. A multi-way Trie tree is utilized to artfully design a Trie node data structure, and the technical problems that the traditional routing table realization method can not satisfy the quick route lookup requirement, the memory access times are reduced, the cost of construction is high and the use efficiency is low can be solved by a prefix list item storage data structure and algorithm, a high-speed longest route prefix lookup method, a quick route prefix increasing method and a quick route prefix deleting method. The route prefix processing, lookup, adding and deleting method has the advantages of high lookup speed, high update speed and good use benefit.

The invention discloses flue gas desulfurization equipment. The flue gas desulfurization equipment comprises an absorption tower (10) and a first flue (11) connected to the absorption tower (10). A first induced draft fan (12) of which the outlet faces the absorption tower (10) is arranged on the first flue (11), a first inlet isolation door (13) positioned at the inlet of the first induced draft fan (12), and a first outlet isolation door (14) positioned at the outlet of the first induced draft fan (12) are also arranged on the first flue (11), a first exhaust opening is arranged between the outlet of the first induced draft fan (12) and the first outlet isolation door (14), and the first exhaust opening is connected with a suction device used for sucking flue gas at the outlet of the first induced draft fan (12). The flue gas desulfurization equipment can solve the problem that the induced draft fan cannot be completely isolated, and thus flue gas reversely flees at the outlet.

The invention discloses a coal gangue circulating fluidized bed boiler, and relates to a circulating fluidized bed boiler which can be used for solving the problems that existing coal gangue circulating fluidized bed boiler is higher in ash fusion point of fuel, unstable in fuel and inadequate in fuel combustion, the bed layer temperature cannot be ensured due to water cooling and gas cooling cyclone separators adopted, and the return device uses natural circulation by primary air which affects stable operation of the boiler. The boiler comprises a hearth, a water cooling air chamber, a cyclone separator, a return device and a return Roots blower, wherein the cyclone separator is communicated to the upper side wall of the hearth, insulating rock wool is arranged on the outer wall of a separator main body, an aluminum silicate insulating cotton plate, an insulating pouring material layer and a wear-resisting pouring material layer are sequentially arranged on the inner wall of the separator main body, an exhaust gas outlet cylinder of the cyclone separator is fixedly connected to an upper outlet of the separator main body in a deviating manner, and the lower end of the cyclone separator is communicated with the lower side wall of the hearth through the return device. The boiler provided by the invention is used for combusting coal gangue fuel.

The invention discloses a clock network extraction method and device of an integrated circuit and a storage medium thereof, and belongs to the field of circuit design. The method mainly comprises thefollowing steps: determining a derivation starting point node of a clock network; and continuously and reversely deriving a previous node of the clock network to obtain a derivation process node of the clock network, and determining a derivation end node of the clock network. According to the invention, on the premise of not depending on an electronic design automation tool, a special starting point and a terminal point can be stripped clearly and accurately, the whole clock network architecture of any type can be further stripped, and the problem of backtracking is avoided, so that a design engineer can analyze and optimize the quality of the clock network conveniently, and the problem of clock effective propagation in an integrated circuit is efficiently solved.

The invention discloses an automatic ecological fish catching system comprising at least one fish catching unit. Each fish catching unit consists of a fishing net, a guiding wall, a guiding chamber, and a fish basket group arranged at the outlet of the guiding chamber; and the guiding wall arranged at the inlet of the guiding chamber is in contact with the wall surface at one side of the guiding chamber and cooperates with the opposite wall surface at the other side of the guiding chamber, so that the distance between the guiding wall from the outside of the guiding chamber to the inside of the guiding chamber and the opposite wall surface at the other side of the guiding chamber decreases gradually until the guiding chamber inlet only accommodating a fish body is formed. The fish gasket group is arranged at the outlet of the guiding chamber. One side of the fishing net is connected with the guiding wall; and the other side cooperates with an extending zone of the wall surface of one side, far away from the fish basket group, of the guiding chamber to form a fish inlet. On the basis of the design, habits of the fish are utilized fully; the fish can enter the fish basket autonomously without any manual operation, so that the personal safety of the fish catching staff can be protected; and thus the fish catching security is improved and automatic fish catching is realized.

The invention relates to the technical field of safe collection of volatile organic compounds (VOCs) in normal pressure and low pressure storage tanks, and discloses a safe collection method for VOCsin storage tanks. The method comprises the steps of classified collection of the VOCs of storage tank groups of various materials, communication treatment of the VOCs of the storage tanks of the sameor similar materials, nitrogen sealing measure treatment for safety control of the storage tank groups of the various materials, emergency measure treatment, and discharging of the VOCs of the storagetank groups of the various materials. According to the method, not only is the fire risk of the storage tanks significantly reduced, but also the gas phase of the storage tanks can be remotely cut off in case of an accident so that the safety of the storage tanks can be guaranteed. Meanwhile, the method achieves the VOCs treatment of the various material storage tanks.

The invention discloses an oil-displacing agent for supercritical carbon dioxide displacement as well as a preparation method and application thereof, belonging to the field of carbon dioxide displacement oil extraction. The preparation method of the oil-displacing agent comprises the following steps: subjecting a first monomer to reacting with a second monomer to generate a first intermediate; subjecting the first intermediate to reacting with a third monomer to generate a second intermediate; subjecting a fourth monomer to reacting with a fifth monomer to obtain a third intermediate; and polymerizing the second intermediate and the third intermediate to obtain the oil-displacing agent.

The invention discloses a laser for a laser cutting machine. A clad fiber comprises a laser gain medium fiber core arranged in the middle. The laser gain medium fiber core is wrapped by a glass isolating layer, a fluorescent material layer and an outer cladding layer from the inside out in sequence. The input end and the output end of the clad fiber are provided with a first fiber Bragg grating and a second fiber Bragg grating respectively; the end surface, arranged at the side of a pump light source, of the clad fiber is provided with a tail mirror; a first lens and a second lens are arranged between the clad fiber and a transmission fiber in sequence; a low-pass filter mirror and a focusing mirror are sequentially arranged right under a semi-reflection semi-permeable lens from upward down; the focusing mirror receives reflection light from the semi-reflection semi-permeable lens; an imager is arranged at one side of the focusing mirror and is used for receiving light rays from the focusing mirror; and the cross section of the glass isolating layer is in D shape. Cutting speed is improved; high-power cutting can be tried, and cutting speed is fast and power redundancy is small; and laser energy can be utilized fully.

The invention provides an efficient flame retardant device. The efficient flame retardant device is installed between a gas supply end and a client side, and sequentially comprises an electronic check valve, a water type flame retardant mechanism, a dry type flame retardant mechanism and a free radical detection device in the direction from the gas supply end to the client side, and the free radical detection device and the electronic check valve are electrically connected with a controller. According to the efficient flame retardant device, the water type flame retardant mechanism and the dry type flame retardant mechanism are connected in series, lots of free radicals in tempering flames can be eliminated through the dry type flame retardant mechanism, then, cooling is conducted through the water type flame retardant mechanism, and thus, shifting of the tempering flames can be thoroughly avoided; moreover, the front end of the efficient flame retardant device is additionally provided with the free radical detection device which adopts a mode that signals of the free radicals are amplified through copper wires, and then detecting is conducted, and accordingly, the sensitivity of the free radical detection device can be improved. Through the efficient flame retardant device, the flame retardant effect can be well achieved, and the safety of the gas source end is ensured.

The invention relates to a rectifying tower top reflux temperature adjusting system and process, the adjusting system comprises a temperature control pipe group, a reflux tank, an emptying pipeline and a pressurizing pipeline, and the pressurizing pipeline is communicated with the middle part of the emptying pipeline at the top of the reflux tank. In the process of reducing the reflux temperature, the pressure needs to be adjusted by increasing the heat bypass flow, but the reflux temperature can be increased, and at the moment, the pressure of the reflux tank at the top of the tower can be increased, the pressure of the reflux tank can be maintained and the heat bypass flow can be reduced by opening a pressurizing pipeline valve, so that the top reflux temperature of the rectifying tower is reduced, and the heat balance of the rectifying tower system is maintained; the material delivery temperature is reduced, and safe and stable operation of a production system is guaranteed; the influence of evacuation and cavitation on the top reflux pump of the rectifying tower is avoided.