167results about How to "Ensuring Safety and Reliability" patented technology

A registration and authorization method, device and system is used for solving the technical problem of relatively low safety of the existing authorization technology. The method is applied to an authorization server, the authorization server is a node in a blockchain network and stores a blockchain composed of a plurality of blocks, each block is used for storing authorization information, and the method comprises: receiving a registration request message sent by a user device, wherein the registration request message includes identification information, and the identification information is used for performing identity verification on a user; assigning authorization information to the user, wherein the authorization information is used for indicating a service that the user can access; and writing the identification information and the authorization information into the blocks of the blockchain through the authorization server.

The invention discloses a catering and amusement management system and a special electronic menu and a self-help ordering method thereof. The internet-based catering and amusement management system comprises a remote data service unit, a remote application service unit, at least one catering and amusement shop operating unit and an access terminal unit, wherein the remote data service unit is used for the collective and concentrated storage of data from the units in the system; the remote application service unit is used for acquiring the data from the units, analyzing and processing the data collectively, distributing the data to the units and providing an internet-based catering management application service module; the at least one catering and amusement shop operating unit is used for the daily operation of a catering and amusement shop and the data interaction with the remote data service unit; and the access terminal unit is used for accessing the corresponding catering management application service module according to the right distributed by the remote application service unit. The system has high data safety, remote management, convenient and quick maintenance, low system maintenance cost and good augmentability, and can be simultaneously applied to the management of a plurality of catering and amusement shops with different brands.

The invention discloses a test method of PID (Potential-Induced Degradation) of a solar cell module. The test method comprises the following steps of: (1) testing and recording initial data of a tested solar cell module; (2) installing the tested solar cell module in a high-temperature and low-temperature experimental environment box and carrying out insulated treatment between the tested solar cell module and the high-temperature and low-temperature experimental environment box; (3) polarly connecting the anode and the cathode of the tested solar cell module, which are subjected to short-circuited connection, with the cathode of high-voltage loading equipment, and connecting a frame of the solar cell module with the anode of the high-voltage loading equipment; (4) starting the high-temperature and low-temperature experimental environment box, starting the high-voltage loading equipment and debugging the high-voltage loading equipment to the output voltage value of 600-1000V, and simultaneously starting a current monitor for carrying out electric leakage monitoring; (6) testing and recording final data of the tested solar cell module; (7) comparing the initial data with the final data of the tested solar cell module and evaluating power degradation; and (8) finishing the test.

The invention discloses a single-component thread locking epoxy precoated adhesive which is characterized by being prepared from the following components in proportion by weight: 40-70 parts of epoxyresin, 10-80 parts of activated thinner, 20-60 parts of epoxy hardener, 8-20 parts of urea, 30-60 parts of formaldehyde solution, 10-30 parts of hydroxyphenol, 0.5-5 parts of stuffing, 5-15 parts of surfactant, 80-200 parts of distilled water, 0.5-2 parts of membrane material, 0.1-1 part of hydrolysis inhibitor and 5-10 parts of solvent; and a preparation method comprises the steps: firstly, respectively microencapsulating the epoxy resin and the epoxy hardener are and then uniformly mixing with other components in proportion. The single-component thread locking epoxy precoated adhesive has the characteristics of convenient construction, applicable workpiece material diversification, less curing condition restriction, good moisture resistance and high destabilizing moment and average disassembly moment, ensures the locking performance and better guarantees the safe reliability of products.

The invention relates to a tunnel protection structure crossing a high-top and deep-bottom karst cave, which is arranged in the high-top and deep-bottom karst cave and comprises a main body structure of a tunnel, a protective cover, a foundation protective cover, a foundation arc structure of the protective cover and a supporting arch bridge of the tunnel. The tunnel protection structure crossing a high-top and deep-bottom karst cave is characterized in that the protective cover is arranged above the main body structure of the tunnel; the foundation arc structure of the protective cover is arranged at the foundation root of the protective cover; and the foundation arc structure of the protective cover spans over the karst cave; a tunnel bottom arc structure spanning over the karst cave is arranged below the main body structure of the tunnel; and the tunnel bottom arc structure supports the main body structure of the tunnel. , by the tunnel protection structure crossing a high-top and deep-bottom karst cave, a high-top and deep-bottom semi-filling karst cave with short longitudinal distance can be protected, the purpose of minimizing serious damage of dangerous falling rocks to projects is realized, and the safety and the reliability of the construction and the long-term operation of the main body structure of the tunnel can be ensured.

The invention discloses an electromobile driving system vector control method using double inverters. The electromobile driving system vector control method includes the following steps: collecting three-phase stator current, rotor position and rotating speed in an unwinding permanent magnetic synchronous motor, wherein the three-phase current is subjected to 3S/2R conversion to acquire current under a two-phase rotating coordinate system. A system adopts the vector control method with id equal to 0, a stator voltage instruction under the two-phase rotating coordinate system is acquired through double closed-ring control of a rotating speed outer ring and a current inner ring, stator voltage under the two-phase static coordinate system is acquired through 2R/2S coordinate conversion, control pulse of the double inverters is acquired through a single-power-source double-inverter SVPWM (space vector pulse width modulation) module, and switch devices of the double inverters are triggered to realize vector control of double-inverter SVPWM of the unwinding permanent magnetic synchronous motor. The electromobile driving system vector control method has the advantages that the unwinding permanent magnetic synchronous motor is quick to start, high in overload capability and good in speed adjusting performance; due to the single-power-source double-inverter SVPWM, voltage level of the system is increased, and safety and reliability of the system are guaranteed.

The invention discloses a traditional Chinese medicine hyperthermia treatment device, which comprises a main body of a hyperthermia treatment device, a support plate is fixedly mounted on the top of the main body of the hyperthermia treatment device, and the upper surface of the support plate is slidably mounted with a fumigation housing in a horizontal direction. The traditional Chinese medicinehyperthermia treatment device can accelerate the full decomposition of the active ingredients in the traditional Chinese medicine into the water by stirring with a stirring rod, the traditional Chinese medicine hyperthermia treatment device is beneficial to ensure the maximum efficacy of the traditional Chinese medicine; at the same time, a patient is subjected to fumigation hyperthermia in the fumigation housing, which can maximize the heating of the whole body of the patient, and a heating area is large, and the therapeutic effect of the hyperthermia is improved; fumigation during the massage can speed up the blood circulation of the patient's body and stimulate the skin hair follicles at the massage part, the steam containing the traditional Chinese medicine can be quickly absorbed, thethe absorption efficiency of traditional Chinese medicine is increased, and the traditional Chinese medicine hyperthermia treatment device ultimately improves the therapeutic efficacy of traditionalChinese medicine.

A jet airplane features that its main body is a flat rectangle and its longitudinal cross-section and two sides are all the cross-section of standard wing. Its advantages are high elevating force generated by its main body, short length and span, lower height, light dead weight and low cost. It has also the engine able to jet in different directions and the emergency lifesaving system.

Disclosed is a power supply circuit of an electric device. The power supply circuit comprises a power source configured to output a power source voltage; a power source voltage detecting circuit configured to detect the power source voltage, and to output a first voltage control signal; a leading edge delay circuit configured to receive the first voltage control signal, and to output a second voltage control signal; an electronic switch connected in series between the power source and the load, configured to turn on or turn off power supply from the power source to the load; and a slow turn-on circuit configured to receive the second voltage control signal.

The invention provides an underwater solvent-free epoxy anchoring adhesive and a preparation method thereof. The underwater solvent-free epoxy anchoring adhesive consists of a component A and a component B in the weight percentage of 1:1, wherein the component A consists of the following components in parts by weight: 30-45 parts of epoxy resin E-44, 5-13 parts of epoxy resin E51, 3-8 parts of diluting agent, 0.5-0.75 part of coupling agent, 0.1-0.2 part of dispersant, 0.1-0.3 part of antifoaming agent, 0.4-3 parts of thixotropic agent, 20-30 parts of active micro silicon powder, 5-8 parts ofcalcium carbonate, 5.6-12 parts of quartz sand and 2-5 parts of aluminum oxide; the component B consists of the following components in parts by weight: 48-54 parts of completely-underwater epoxy curing agent 1085A, 44-50 parts of active micro silicon powder and 0.2-0.4 part of thixotropic agent; the diluting agent is benzyl alcohol; the coupling agent is ND-42 or KH 560; the dispersant is BYK P104S; the antifoaming agent is BYKA530; and the thixotropic agent is bentonite or white carbon black or a mixture of the bentonite and the white carbon black. The underwater solvent-free epoxy anchoring adhesive is prepared by mixing the prepared component A with the prepared component B in the weight ratio of 1:1.

The invention relates to a method for controlling the formation quantity of bromate in an ozone oxidation process of drinking water by introducing a nano TiO2 catalyst, which avoids negative effects brought to the safety and the reliability of the drinking water of the traditional method for controlling the bromate by adding chemical drugs. According to the method, settled water treated by a conventional method is directly filled into a nano TiO2 catalyst bed for ozone contact and catalytic ozone oxidation, or after the settled water is subjected to ozone contact and catalytic ozone oxidation in a primary nano TiO2 catalyst bed, water still containing ozone is filled into a secondary nano TiO2 catalyst bed for carrying out a catalytic reaction, wherein the contact oxidation time is 10-20min. The method has the advantages that the nano TiO2 has obvious efficiency of reducing the formation quantity of the bromate in the ozone oxidation process and also has obvious control efficiency to the formation quantity of the bromate in the ozone oxidation process of water with high bromide ion concentration, the formation potential to trihalomethane and the reduction efficiency to DOC of individual ozone oxidation can be improved, and other toxic and side effects cannot be caused to the quality of the drinking water.

The invention discloses a self-encrypting self-checking two-dimensional code encoding and decoding method, which comprises the steps of: selecting a record randomly from a data record sheet corresponding to a currently-used secret key batch number, wherein the record comprises salt and a secret key; connecting the salt and a product serial number into a character string, encrypting the character string via the secret key by using a symmetric key algorithm to obtain a ciphertext; connecting the key batch number, the salt and the ciphertext into a character string serving as a parameter; and combining a given address and the parameter to obtain a Url, which serves as a required two-dimensional code information code. The self-encrypting self-checking two-dimensional code encoding and decoding method can realize the self-encrypting self-checking encoding and decoding of two-dimensional code information, so that the two-dimensional code information is difficult to forge, and can directly judge whether the two-dimensional code is forged according to the two-dimensional code information.

The invention provides a trigger and a generator voltage regulator. The trigger comprises a comparison unit, which is connected with a power supply end, ground and a switch unit and is used for outputting a first voltage to the switch unit when the voltage at an in-phase input end is larger than that of an inverse-phase input end, and outputting a second voltage to the switch unit when the voltage at the in-phase input end is smaller than that of the inverse-phase input end; the switch unit, which is connected with the ground or the positive pole of a power supply and a trigger control end, and is used for enabling the control end to be conducted with the ground under the control of the comparison unit, or enabling the control end to the conducted with the positive pole of the power supply; and a feedback unit, which is connected with the control end and the inverse-phase input end of the comparison unit, and is used for positively feeding back the signal of the control end to the inverse-phase input end of the comparison unit. When the trigger is applied to the voltage regulator, integration of multiple functions of excitation fixed-frequency triggering, immediate overvoltage cutting off and over-current protection is realized; and a sampling circuit does not need a capacitor, and synchronous detection and overvoltage excitation cut off are realized, and overtime overvoltage excitation does not occur, so that the effects of stable voltage, accurate adjustment and being safe and reliable are achieved, and the service life of the regulator and the service life of a generator are prolonged.

The invention discloses an electric phase separation self-actuated switching control device used for an electrified railway pantograph passing neutral section. The electric phase separation self-actuated switching control device is formed in a manner that an online phase separation section is connected with a switching control compartment by high-voltage cables 18, 19 and 20, wherein the switching control compartment is arranged at a line side. As the online phase separation section forms symmetrical power supply delay process sections L1 and L2, linked power supply sections L8 and L9, switching limit process sections L6 and L7 and pantograph envelope sections L3 and L4 capable of meeting requirements of any speed zones and any pantograph rectification manners, signal acquisition contact lines 5 and 6 are lapped by utilizing a pantograph, control signals are provided by signal acquisition units 16 and 17, program control is performed on working conditions of normally-opened switches 21 and 22, a normally-closed switch 23 and a resistor 25 by a control system 26, and all functions required by the pantograph passing neutral section are automatically completed on line. The pantograph passing neutral section problem is completely solved by a contact network, and an effect that the passing neutral section is irrelevant to driving is achieved. The electric phase separation self-actuated switching control device used for the electrified railway pantograph passing neutral section is suitable for any zones, speed zones, locomotive crews or motor train units and pantograph rectification manners, and has the characteristics that the safe reliability is high, the service life is long and the operation cost-effectiveness is low.

There is provided an economical product information display body A capable of increasing credibility of the product information and sufficiently assuring product reliability and safety at a low cost. The display body A is attached to a product and has a visible information display C relating to the product and invisible information identification means D. The invisible information identification means D is composed of an information presenting substance consisting of one or more elements emitting fluorescence when radiated by an electromagnetic wave of a particular wavelength range or a compound consisting of two or more elements or a substance including these elements or a compound. One or more information of the product information display by the visible information display is correlated to the information presenting substance.

The invention belongs to the motor manufacture technology field, and relates to a stator and rotor punching sheet production line. The stator and rotor punching sheet production line comprises a clipping system used to clip a silicon steel coil into blanking plates and a punching device used to punch the blanking plates into stator and rotor punching sheets, wherein a screening device is obliquely arranged on a punching sheet outlet of the punching device, and one end of the screening device, which is higher than the other end of the screening device, is located on the punching sheet outlet of the punching device. The stator and rotor punching sheet production line further comprises a sorting device used to sort the stator and rotor punching sheets which fall onto the ground. The stator and rotor punching sheet production line improves production efficiency, saves labor, and thereby saves cost.

The invention provides a trusted authentication system and a trusted authentication method based on a block chain, the method comprising steps: by using block chain technology instead of traditional data storage and verification methods, decentralization is realized, that is, a centralized agent is not needed, a high efficiency and large-scale interaction mode is directly realized, and users can not easily tamper with the correct information, once the information of a node changes, the entire 'block chain' of each node will perceive the behavior to ensure the authenticity and uniqueness of therelevant data; by using authentication server, different users can be assigned different application privileges to achieve effective management and information protection; the whole system can prevent user information from being tampered with, ensure the authenticity and uniqueness of the relevant data, assign different application rights to different users, and ensure the security and reliability of the system.

A self-cleaning assembly employing a gap filler for a rail on the ground which guides or in which there runs rollers or wheels with lugs housed in a groove so as to lie flush with or protrude only slightly from the ground and which has a gap on the side of the rail corresponding to the passage of the lug. A filling substance is placed in the gap outside of the dynamic footprint of the lug and at least partially lines the gap, at least partially filling it. The filling material has properties of compressibility and is positioned in such a way that under all normal conditions of use or normal environmental conditions, the gap remains filled outside of the dynamic footprint of the lug.