378results about How to "Solve the service life" patented technology

The invention discloses a non-complementary flyback active clamp converter. The non-complementary flyback active clamp converter comprises a transformer, a main switching tube, a clamp switching tube, a clamp capacitor and a drive module. The drive module outputs main drive signals to the drive end of the main switching tube, and the driving signals are used for controlling the main switching tube to be alternately switched on and switched off. The drive module outputs clamp drive signals to the drive end of the clamp switching tube. The clamp drive signals and the main drive signals have the same period. Each period comprises a first pulse signal which is generated when the switching-on state of the main switching tube is converted to the switching-off state, a second pulse signal which is generated when the main switching tube is in the switching-off state, and a signal which is generated at the remaining time and used for controlling the switching-on and the switching-off of the clamp switching tube, wherein the first pulse signal and the second pulse signal are independent of each other and both used for controlling the switching-on and the switching-off of the clamp switching tube. By the adoption of the non-complementary flyback active clamp converter, it is guaranteed that a high-frequency current generated when the clamp capacitor is charged fully flows through the clamp switching tube and avoids a backward diode of the clamp switching tube.

The invention discloses a system of realizing dynamic identification authentication, comprising an intelligent card, a cell phone, an authentication terminal and an authentication server. The invention further discloses a method for realizing the dynamic identification authentication, including the following steps: the intelligent card pre-stores a seed key and an algorithm; a dynamic password required by the authentication is generated by utilizing the algorithm, the seed key and an appointed authentication factor, and is sent to the cell phone which receives and displays the dynamic password; the user enters the dynamic password and user information into the authentication terminal and uploads the dynamic password and user information to an authentication server; the authentication server obtains the seed key of the user from the authentication server according to the user information and carries out the calculation of the seed key and the appointed authentication factor with the prestored algorithm, thus also generating the dynamic password; and comparison of the dynamic passwords at two terminals is carried out, thereby completing the authentication. The invention overcomes the existing defect that the identification authentication of the user is required, and the user additionally carries a dynamic password card and other identification authentication products, simultaneously, the problem about the service life of the password card is solved.

The invention discloses a method for producing poly-lactic acid products. The method comprises the following steps that in the presence of catalyst, a lactide open loop is copolymerized with PEG to form a PLA-PEG-PLA copolymer, and the copolymer is co-mixed with the PLA to obtain the poly-lactic acid plasticized products. The PEG is prepared by the polymerization of ethylene glycol and ethylene oxide in which the carbon elements are sourced from biological materials, the stretch modulus of the poly-lactic acid film product at a temperature of 23 DEG C is between 0.1 and 2 Gpa, and the carbon elements of the compositions of poly-lactic acid are completely sourced from the biological materials.

The invention relates to a vehicle drying dual-clutch cooler, wherein said invention arranges gas inlet (11) and gas outlet (5) on the frame of dual-clutch automatic speed changer; mounts blower fan (12) driven by motor on the gas inlet (11); arranges divert tube (10) inside the frame (2) of speed changer; arranges axial ventilate holes on the flywheel disc (1) and clutch cover (9), to form the air refrigerating system. The invention can use cooling air to cool the clutch, to reduce its working temperature, while high working temperature will affect the service life and working property of drying dual-clutch.

The invention belongs to the technical field of network equipment, and particularly provides a router comprising a shell. Special aspects of the router are that the shell is provided with a fan, a temperature control module and a power switch which is installed on the shell. The fan, the temperature control module and the power switch are connected in series. A problem of poor stability of a network device caused by the fact that an existing router has no ventilation and heat-radiating equipment is solved by the router, and the service life of the router is enhanced simultaneously.

The invention discloses an intelligent charging method and a device. The field of mobile communication is related, and the problem that the plug-play charging mode affect the service life of a battery. The method comprises the following steps: detecting the type of an external charging power supply; if the type of the power supply is USB_VBUS power supply with the voltage value within a legal range, detecting the current electric quantity of the battery; and when the current electric quantity of the battery is not less than the preset charging threshold value, rejecting to charge. The technical method provided with by the invention is suitable for digital electronic products which can be charged by a USB HOST port.

The invention provides a method for controlling operation of a cleaning and sweeping trolley, a controller and the cleaning and sweeping trolley, wherein the method comprises the following steps: the controller receives a current operation mode transmitted by an operation mode select switch and water level information reported by a water level sensor inside a clear water tank; the controller controls whether a clutch between an auxiliary engine of the cleaning and sweeping trolley and a high-pressure water pump is started according to the current operation mode and the water level information, and the controller carries out current operation after detecting a start signal of the auxiliary engine, wherein the high-pressure water pump and the auxiliary engine obtain power from the auxiliary engine under the start state. According to the method, the problems that the high-pressure water pump lastingly operates due to the start of the auxiliary engine, and the service life of the high-pressure water pump is reduced are solved, the practicability of the cleaning and sweeping trolley is enhanced, and the performance is improved.

The invention relates to the field of electric automobile charging, in particular to an alternating current charging pile which comprises a main MCU (micro-control unit) unit. The main MCU unit is respectively connected with a card reading unit, a charging loop unit, an input unit, a display unit, a metering unit, an electromagnetic warehouse unit, a voice guide unit, a standby power supply unit, a lightning protection leakage unit, a communication unit and a dip angle detection unit through a total data line, and the display unit comprises an operation display module and an equipment state display module. The alternating current charging pile has the advantages that charging completeness is maintained, charging complaint caused by power failure is reduced, the standby power supply unit can be circularly charged when power is supplied again, and the service lives of the standby power supply unit and a vehicular battery are prolonged.

The invention discloses an insulating material, which belongs to the technical field of electric engineering. The insulating material is characterized by comprising, by weight, 20 to 28 parts of nanometer silica, 20 to 28 parts of polycarbonate resin, 1 to 3 parts of aluminum hydroxide, 10 to 20 parts of potter's clay, 80 to 100 parts of polyethylene, 1 to 5 parts of polyethylene glycol, 30 to 50 parts of silicone rubber, 2 to 5 parts of a vulcanizing agent, 4 to 8 parts of a diluent, 2 to 5 parts of fumed silica, 20 to 40 parts of a fire retardant, 20 to 40 parts of quartz powder, 4 to 8 parts of silicone oil, 54 to 72 parts of polyether-ether-ketone resin, 10 to 17 parts of talcum powder, 13 to 20 parts of light calcium carbonate, 9 to 18 parts of lubricant, 8 to 16 parts of anti-oxidant and 10 to 16 parts of calcined mica.

The invention relates to a lithium ion battery life prediction method, and belongs to the technical field of battery life evaluation. The method includes firstly, building a first capacity attenuationmodel representing the storage life of a battery; solving unknown parameters of the first capacity attenuation model according to the storage experiment data of the storage experiment; then, according to the determined first capacity attenuation model, establishing a second capacity attenuation model in combination with the number of charge-discharge cycles of the battery within the set time, andsolving unknown parameters of the second capacity attenuation model according to cycle experiment data of a charge-discharge cycle experiment, thereby finally determining the second capacity attenuation model representing the storage life and the cycle life of the battery; and finally, substituting the working condition information of the actual use of the battery into the second capacity attenuation model so as to obtain the predicted life of the battery. Compared with a method for purely predicting the storage life or the cycle life in the prior art, the method is more suitable for the actual service condition of the battery and can quickly predict the actual life of the battery.

The invention discloses an uninterruptible power supply, which comprises an electric supply input end and an output device. The output device is provided with a selector switch, a common output unit, a controlled uninterrupted power output unit and an output end, wherein the common output unit, the controlled uninterrupted power output unit and the output end are respectively connected with the selector switch; an electric supply leading-in end, a main switch, a power supply filtering unit and the common output unit are connected in sequence; the power supply filtering unit is also connected with an intelligent detection unit, an intelligent control unit and a display unit in sequence; the power supply filtering unit is provided with a lightning protection anti-interference module; the intelligent control unit is also respectively connected with a charge control unit and a lithium-ion power battery unit; the power supply filtering unit is also connected with a rectification unit, the charge control unit, the lithium-ion power battery unit, a high-frequency control unit, an inverter circuit, a switching control unit, an overcurrent overload detection unit and the controlled uninterrupted power output unit in sequence; and the rectification unit is also connected with the switching control unit.

The invention discloses a method for manufacturing prestressed centrifugal anti-corrosion concrete hollow square piles through pre-tensioning method. The method comprises the steps of 1) designing of a concrete mix proportion and anti-corrosion concrete preparing; 2) pouring; 3) end plate model selection and assembly; 4) pile point model selection and assembly; 5) tensioning, centrifugal shaping and steam curing; and 6) releasing, demolding and high-pressure steam curing to obtain finished products. According to the method, mineral admixtures and anti-corrosion materials outstanding in anti-corrosion performance are added in concrete, a concrete mix proportion is reasonably designed, and the anti-corrosion performance of concrete is improved, accordingly, the durability and the anti-corrosion performance of centrifugal steam curing precast piles and pile foundations are improved, the service life problem of concrete and reinforced concrete in corrosive media and environments is solved, and the safety of building materials and building foundations is improved.

The application provides a control method for a high-pressure ratio of an air conditioner, a controller and an air conditioner control system. The method comprises the following steps of: bringing the actual low-pressure pressure value to a linear equation of the highest high-pressure ratio line of equipment by acquiring the actual high-pressure pressure value and the actual low-pressure pressure value of air conditioner equipment and calculating a visual high-pressure pressure value; and judging whether the air conditioner equipment is in a high-pressure ratio region or not by comparing the actual high-pressure pressure value with the visual high-pressure pressure value, if so, reducing the frequency of the compressor. Therefore, the problem that the service life of the air conditioner equipment is shortened as the air conditioner equipment is in the high-pressure ratio region for a long time is solved.

The invention discloses an equalization device for battery electric quantity. The device comprises battery units, charging / discharging units, electronic switch units, bootstrap-boosting driving units, a sampling unit and a main control unit, wherein each charging / discharging unit is used for storing electric quantity and transferring the energy of the two adjacent battery units; each electronic switch unit is used for controlling electric quantity storage of each charging / discharging unit and synchronous rectification during electric quantity transfer of the two adjacent battery units; each bootstrap-boosting driving unit is used for driving each electronic switch unit through bootstrap boosting; the sampling unit is used for acquiring the voltage information of the battery units and sending the voltage information to the main control unit; and the main control unit is used for controlling one of the electronic switch units to be turned on and controlling the adjacent electronic switch unit to be turned off by outputting a pulse width modulation signal. The invention aims to solve the problems of loss of battery capacity and short service life caused by large difference of the battery units in the application process of the conventional series battery pack.

The invention discloses a charging pile. The charging pile comprises a charging pile body; a display control screen is arranged in the middle of the charging pile body, a main control unit is arrangedon the rear side of the display control screen, a wireless connection module is arranged on the right side of the main control unit, and a card swiping sensing area is arranged on the right side of the display control screen; the charging pile further comprises a shielding plate on the upper portion of the charging pile body, supporting rods used for supporting the shielding plate, and a chargingpile base at the bottom of the charging pile body; the bottoms of the supporting rods are connected with the charging pile base, and the tops of the supporting rods are connected with the shielding plate; a drinking water cabinet is arranged on the left side of the charging pile body and internally provided with a water heater and a water tank; and the drinking water cabinet is provided with a water injecting opening, a hot water outlet and a cold water outlet; a sealing cap is arranged on the water injecting opening, the water injecting opening communicates with a water inlet in the water tank through a water pipe, the drinking water cabinet is provided with an observation window, and the output end of the main control unit is connected with a relay used for controlling the water heaterto work. The charging pile is simple in structure and is not affected by rainwater and the severe environment, and the design of the drinking water cabinet is reasonable and humanized.

The invention provides a hand-held artificial intelligence atomizer comprising a host housing and an atomizing cup; the features are that the host housing is used for loading a chargeable battery and disposable cell integration management unit, a power supply interface unit, a signal generation unit, an atomization amount adjusting unit, an automatic cleaning unit, an atomization time control unit, an artificial intelligence unit, a fault detection unit, a liquid medicine liquid level detection unit, a Bluetooth module and a display unit; the atomizing cup is used for containing the liquid medicine and atomizing the liquid medicine; the atomizer is good in atomization effect, can adjust the atomization amount, an automatically clean, can select atomization particles, can realize artificial intelligence, is portable, can detect faults and liquid medicine liquid level, is small in power consumption, comfortable to use, easy to use, can integrally use the chargeable battery and disposable cell, and is low in cost.

The invention discloses a hydraulic intelligent well completion system which comprises a downhole tool, a pipeline cable and a ground control system. The lower portion of the downhole tool is multi-section structure, each section comprises a multistage flow control valve, a decoder, a detector and an isolation sealing assembly, the pipeline cable comprises a hydraulic pipeline and an armored datacable, a pressure sensor, a temperature sensor and a flow sensor are arranged in the detector, the isolation sealing assembly and a positioning sealing assembly are in close fit with a packer at eachsection and a sealing barrel to realize inter-section packing, and the pipeline cable traverses the positioning sealing assembly and the isolation sealing assembly to be connected with the downhole tool. By the system, the problem that existing conventional layered water injection processes are low in testing-adjusting efficiency and accuracy and high in subsequent operation cost is solved, the problem in reliability and service life of intelligent well completion of existing cabled control is solved, and the problem of limitation on section number of common hydraulic-control intelligent wellcompletion is solved.

The invention discloses a formation technology of a valve control lead-acid storage battery for an electric vehicle. The formation technology comprises the following steps: (1) manufacturing of lead powder; (2) manufacturing of slab lattices; (3) surface treatment of slab lattices; (4) manufacturing of pole plates; (5) assembly technology; and (6) charging technology. By adopting formation technology employing new material prescription, new structure, new technology, new technique and the like, the industry technological problem of the discharge of a plenty of sewage containing heavy metal(such as lead and cadmium) in traditional technology is solved, thus laying the foundation for energy conservation and emission reduction.

An embodiment of the invention provides a controllable capacitance energy release circuit. When an external power source supplies power normally, a voltage detection device detects electric quantity of a supercapacitor; if the voltage of a supercapacitor module is a rated value, a bidirectional DC-DC converter does not operate, and the supercapacitor module is not charged; if the voltage of a supercapacitor module is lower than the rated value, the bidirectional DC-DC converter operates to charge the supercapacitor module until the rated value is reached. When the external power source fails,a controller detects power failure through an external power failure detector, then the DC-DC converter is started, the supercapacitor module serves as a power source to supply power to a load throughan inverter, and when output voltage of the DC-DC converter is lower than the minimum voltage required by the inverter, outputting is terminated. The problem of serious damages of service lives of supercapacitors due to certain element overcharge caused by direct series connection in charging and discharging in the prior art is solved.

The invention relates to a lead paste for battery starting / stopping, and a preparation method thereof. The lead paste is composed of a positive lead paste and a negative lead paste, and the positive lead paste comprises, by weight, 990-1010 parts of lead powder, 40-60 parts of red lead, 0.6-1.0 part of a conductive fiber, 2.5-3.5 parts of graphite, 1.5-2.5 parts of diantimony trioxide, 0.5-1.5 parts of stannous sulfate, 110-130 parts of water and 80-90 parts of sulfuric acid; and the negative lead paste comprises, by weight, 990-1010 parts of the lead powder, 0.4-0.8 parts of the conductive fiber, 2.5-3.5 parts of acetylene black, 8-12 parts of barium sulfate, 0.5-1.5 parts of humic acid, 1.5 -2.5 parts of lignin, 100-120 parts of water, 85-95 parts of sulfuric acid. The lead paste for battery starting / stopping and the preparation method thereof effectively solve the problems of poor battery performance, low electrode plate strength, easy loosening and softening, and short battery life.

The invention belongs to the technical field of aluminum alloy doors, and particularly relates to an aluminum alloy door with a fireproof function. The aluminum alloy door aims at solving the problemsthat when people open a door body of an existing aluminum alloy door, if the wind power is large or the force generated when people close the door is too large, the door body can be quickly closed, severe impact force is caused, and the service life of the aluminum alloy door is affected. According to the scheme, the aluminum alloy door comprises a door frame, wherein a mounting opening is formedin the door frame in a penetrating mode, a door body is hinged to the mounting opening, a u-shaped support is slidably connected to the front end face of the door frame, a temperature sensor fixed tothe front end face of the door frame is arranged below the door body, and a control panel fixed to the front end face of the door frame is arranged above the u-shaped support. According to the aluminum alloy door, through a buffer mechanism, the force generated when the door body is naturally closed can be buffered, the problem that the impact force generated when the door body is naturally closed is too large under the influence of strong wind or manpower is avoided, and the service life of the door body is greatly prolonged.

This invention discloses one white LED sealed dissipation structure, which comprises Two metal lead legs with one top as rack cup with blue lighting crystal and fluorescence glue layer stretching out two wires connected to two lead legs, wherein, the two racks top ends are sealed with transparent resin; the top and down sides of crystal are set with one dissipation glue layer. The invention adopts the above structure to get two dissipation glue layer in work for lead legs rapidly and then through rack to outside to make the LED light work under temperature of 65 degrees and fluorescent powder life of 40000 hours.

The invention provides a boiler monitoring method based on the Internet of things. The method comprises steps that, work index parameters of boilers are acquired; whether a disturbance signal is contained in the work index parameters is determined; when the disturbance signal is not contained in the work index parameters, the work index parameters are transmitted to a central control computer; whether the boilers corresponding to the received work index parameters are in fault is detected, when the boilers corresponding to the received work index parameters are in fault, the work states of the boilers are adjusted according to a preset model; work index parameters before and after adjustment are displayed in a graph mode. Through the boiler monitoring method, a problem of error alarming during monitoring caused as the disturbance signal is contained in shake-up signals in a traditional monitoring mode is solved, the monitoring accuracy rate is improved, moreover, the work states of the boilers can be monitored when a user is not on site, and safety coefficients and work efficiency of the boilers are improved.

Disclosed is a light-controlled automatic tracking solar street lamp. The light-controller automatic tracking solar street lamp comprises a solar battery panel (1), a motor (2), a shading baffle (3), an LED (light emitting diode) lamp (4), a central controller (5), a photosensitive sensor (6), a storage battery pack (7) and a lamp post (8), wherein the photosensitive sensor (6) can automatically sense the light intensity of external environment and transmit signals to the central controller (5), the central controller (5) automatically adjusts the light intensity of the LED lamp (4) according to current brightness, so that the problem of energy waste and service life shortening of street lamps under long-time high-brightness high-power working conditions can be solved. At daytime, the central controller (5) can automatically adjust the angle of the solar battery panel (1) through the motor (2) according to the track of the sun during the day to convert more solar energy into electric energy for storage in the storage battery pack (7), so the night lighting electricity consumption can be achieved without assistance of common power sources, and further green and environmental protection can be obtained.

A disinfection cabinet control method and device and a disinfection cabinet are disclosed. The disinfection cabinet control method includes the following steps: connecting a disinfection cabinet to a cooking appliance; determining whether a start signal of the cooking appliance is received; when a start signal of the cooking appliance is received, determining whether the disinfection cabinet is in a disinfection work state; and if the disinfection cabinet is not in a disinfection work state, making the disinfection cabinet start disinfection. The problem that the existing disinfection cabinet control method has a low degree of intelligence is solved.

The invention provides a control method and system for an intelligent home operating system on the basis of the Internet of Things. The method comprises the following steps that: after the operating system of a first intelligent home of a first space responds to the operation instruction of a first user, under a situation that the first user leaves the first space, the intelligent home operating system of the first intelligent home responds to the second operation instruction of a second user, and the operation parameter of the first intelligent home is regulated to a second preset parameter,wherein the first operation parameter is used for regulating the operation parameter of the first intelligent home to a first preset parameter. By use of the method, the problem in the relevant art that the normal use of the user is affected since control instructions mutually conflict because the control permissions of a plurality of users can not be coordinated when multiple people have the control permission for the same intelligent home is solved, and the problem the service life of the intelligent home is affected since intelligent home equipment frequently responds to the instructions ofdifferent users in a period of time also can be solved.

The invention relates to a boiler monitoring method based on an internet of things. The method comprises the steps of: obtaining working index parameters of a boiler; encrypting and transmitting the working index parameters; detecting if the boiler corresponding to the received working index parameters is broken down, and if so, adjusting a working state of the boiler according to a preset model; and giving alarm sound when the boiler is broken down and cannot be adjusted according to the preset model. The method solves the problems of high monitoring cost and low efficiency in a traditional mode, and can monitor the working state of the boiler under the condition that users are not on spot, so that the safety coefficient and the working efficiency of the boiler are improved.

The invention discloses an infrared carbon fiber electric heating wire with a full line safety protection function and automatic temperature control effect. A plurality of carbon fiber wires with far infrared function are taken as a heating element; an internal isolation material layer with obvious positive capacitance temperature characteristic is coated on outer layers of the carbon fiber wires; metal wires with temperature sensing and safety protection functions are spirally wound on the internal isolation material layer; and an external insulation layer is coated on an outermost layer, wherein the cross section of the electric heating wire is of a circle, a square or other shapes. A power supply connection wire with two to five cores is used to connect a temperature controller to a circuit board of a single control temperature adjusting switch, and the joint of the power supply connection wire and the temperature controller is fixed and is subjected to insulation treatment.

The invention discloses a detection reagent, a detection method and a detection instrument for proteins. The reagent is prepared by the following steps: dissolving 0.1 to 10 weight parts of acid orange-12 into 1 to 500 weight parts of buffer solution of phosphoric acid; adding 1 to 500 weight parts of glacial acetic acid; and finally, diluting with 1 to 5,000 weight parts of water, and oscillating and mixing to obtain the detection reagent for the proteins. Compared with the traditional method, the detection method can effectively detect the content of true proteins, and detect the proteins in a wide range; and the detection accuracy is basically not interfered by non-protein nitrogen-containing compounds such as carbamide and melamine. The instrument has small structure, and is convenient to carry. The detection reagent, the detection method and the detection instrument can be widely applied to quick detection of milk products in the basic level and on the spot.