513results about How to "Precise time control" patented technology

The invention provides a low-voltage ride-through testing system of a wind generating set. The testing system comprises a voltage dropping system, an on-site measuring system, a remote monitoring system and an on-site controlling system, wherein the on-site measuring system is in bidirectional connection with the remote monitoring system; the remote monitoring system is in bidirectional connection with the on-site controlling system; the on-site controlling system is in bidirectional connection with the voltage dropping system; the voltage dropping system is in one-way connection with the on-site measuring system; and the on-site measuring system is in bidirectional connection with the on-site controlling system. The low-voltage ride-through testing system of the wind generating set, disclosed by the invention, is in accordance with criterion IEC61400-21, can realize voltage drop of different degrees and various types and can satisfy requirements of wind generating sets in all countries on low-voltage ride-through testing. The low-voltage ride-through testing system is a movable detecting system which is adaptable to performing the low-voltage ride-through characteristic testing on all wind generating sets which have been operated in the wind power field, and has high safety as well as high stability.

The present invention discloses a mobile user authentication charging method supporting grouped data prepaying property characterized by that, the charging request responding message which AAA sending to PDSN contains dialogue activating time length sustainable information. Accordingly, the PDSN contains dialogue activating trigger and charge cycle trigger which can proceed parameter resetting based on the information that AAA has received. When the trigger condition is met, the corresponding intermediate charging request information is triggered and submitted to AAA. AAA recounts dialogue activating sustainable time length after receiving any intermediate charging request information, and sends charge request responding message to PDSN. This enables the PDSN make sectional fees application to AAA, overcoming the limitation of one-time fee, and realizing the accurate prepaying function.

The invention discloses a method for inhibiting peak starting current of a start-stop motor. The method includes that firstly a relay with a current limiting resistor is added to a main start-stop motor loop comprising a storage battery, an ignition switch, a contact of an electromagnetic switch and the start-stop motor, and two binding posts of the current limiting resistor and the relay are parallelly connected and then connected between the ignition switch and the contact of the electromagnetic switch; and secondly, a power supply of the storage battery supplies power for coils of the relay and the electromagnetic switch respectively. The invention further discloses a relay for achieving the method for inhibiting peak starting current of the start-stop motor and a start-stop motor for implementing the method for inhibiting peak starting current of the start-stop motor. According to the method, the relay and the start-stop motor, the current limiting resistor is cut in or cut out when ignition is performed in the start-stop motor loop, so that overlarge starting current can be inhibited at the moment of starting of the start-stop motor so as to achieve the purpose of prolonging the service life of the start-stop motor.

The invention relates to a vacuum vapor-phase replacement type Chinese medicinal material-moistening technique, which can effectively solve the problem on how to soften Chinese medicinal materials and ensure quality as well. The specific technical scheme for solution is as follows: medicinal material is loaded into a container, the container is vacuumized, vapor is filled into the container, and can be kept for a certain period of time, a temperature controller is arranged and can control the internal temperature of the controller after the vapor is filled, the amount of the filled vapor is controlled, and medicinal material moistening can be kept for a certain period of time. By means of the production method, the color, smell and piece shape of the medicinal material can be maintained to the max, the loss of effective components can be reduced, the curative effect of Chinese medical clinic decoction and preparation is guaranteed and is stable and controllable, meanwhile, the cost can be reduced, the man-hour is greatly saved, environment pollution is reduced, and the technique is favorable for the development of the industrialized and standardized production of traditional Chinese medicine decoction pieces.

The invention provides a digital optimization control method and system for synchronous rectification of an LLC full bridge converter. The drain terminal voltage before and after the shut-off of a synchronous rectification tube at the full bridge LLC secondary side is respectively sampled; the twice sampling results are subjected to logic comparison through a comparator; a microcontroller regulates the shot-off time of the synchronous rectification tube at the full bridge LLC secondary side according to the logic comparison result; the precise sampling of the drain terminal voltage before and after the shut-off of the synchronous rectification tube at the full bridge LLC secondary side is realized by using the interruption matching of the microcontroller; the shut-off of the synchronous rectification tube at the full bridge LLC secondary side at the optimum shot-off time is realized through comparing the time command to be regulated given by the microcontroller in real time; and the whole efficiency of the full bridge LLC is improved.

Adding guided light strip array high-power semiconductor laser device (High-Power Laser Diode Bar , LD for short) reshaping method: (1) by calculating the product of the optical fiber core radius and half of the angular aperture, and the optical parameter product of the LD light beam in the direction of quick, slow axis, ascertain the number of times which the LD light beam needed to reshaping, to make reshaping implement with high reflecting efficiency; (2) adopting the quick, slow axis collimation lens array to collimates in two direction of the quick, slow axis alignment of LD, getting the strip collimation facula; (3) assembling reshaping implement , realizes reshaping of the light beam; (4) assembling the focusing lens and optical fiber, adjusting the optical fiber to the right location , making the outputting power of LD maximal;(5)entrancing the guided light in proper location of the reshaping implement, adjusting the guided light to appropriate location, makes the luminous power of the guided light which is output from the optical fiber maximum. The light path design is reasonable and compact, has not changed the light path of LD, has avoided leading into new scattering and reflecting loss, guarantee light path stability of LD.

The invention discloses a rapid screening method for drought-enduring variety of rice at seedling stage, comprising the following steps that: after soil drought processing and drought processing simulated by polyethylene glycol (PEG), variety with strong drought tolerance in two processing methods is screened out. By simultaneously performing soil drought and drought simulated by PEG and conjointly analyzing the result, the defects of two drought processing methods can be simultaneously avoided and the advantages of two methods can be exploited to the full. Thus, the experimental result is accurate and the results of the studies of breeding, group construction, gene mapping and the like of the drought-enduring variety and drought-sensitive variety which are screened out are more credible, and the time and the expenditure of researchers are saved.

The invention provides an automatic detection system for fault indicators for a distributing line. The automatic detection system for the fault indicators for the distributing line comprises an automatic test module, an output control device, a data acquisition unit and a control acquisition unit. The output control device, the data acquisition unit and the control acquisition unit are respectively connected with the automatic test module by computer communication lines. According to the automatic detection system for the fault indicators for the distributing line provided by the invention, the real-time acquisition of the action states of the fault indicators is realized. The amplitude of a tested alternating voltage signal and the amplitude of an alternating current signal can respectively reach 10kV and 2kA, and actual signals of the line can be more accurately simulated. Moreover, the automatic detection system for the fault indicators for the distributing line is high in degree of automation, test efficiency and safety.

An evaporator unit for an inhaler comprising a heating element is designed to evaporate liquid, the evaporated liquid being taken up by an airflow flowing through the evaporator unit. The evaporator unit comprises at least one air-permeable capillary structure having a surface that is heatable in order to preheat the liquid and can be wetted, at least in part, by liquid and is supplied with liquid by capillary action, and the heating element is designed to heat the airflow flowing through the evaporator unit, the capillary structure being arranged downstream of the heating element such that the heated airflow leads to evaporation of the preheated liquid.

The invention relates to the field of kitchen electric appliances, and discloses a cooking equipment control method, cooking equipment control equipment and cooking equipment containing the control equipment. The cooking equipment control method comprises the following steps: receiving the weight of food to be cooked; receiving the food type of the food to be cooked; according to the weight and the food type of the food to be cooked, determining the heating power and time required by the food to be cooked, and controlling the cooking equipment so as to heat the food to be cooked according to the determined heating power and time. The cooking power and cooking time of the cooking equipment can be controlled accurately, so that the cooked food can meet user requirement.

A sampling circuit and method are disclosed. The sampling circuit includes a buffer, a holding capacitor, a set of switches, and at least two voltage references. The buffer drives buffered analog input signal via a first switch to a first node of holding capacitor. A second switch connects a second node of the holding capacitor to a first reference voltage. A third switch connects the second node of the holding capacitor to a second reference voltage. When the first and second switches are closed, charge accumulates on the holding capacitor. Opening the second switch terminates charging. The third switch biases the charged capacitor to the second reference voltage and the sampled output is taken from the first node of the holding capacitor. A rotary clock and control circuit provide the precise timing for the switches, especially the opening of the second switch, which determines the end of the sampling time.

Precise timing control across multiple standardized chassis such as PXI is obtained by providing several control signals over PXI_LOCAL within each chassis, and by providing these control signals to other chassis. A Least Common Multiple (LCM) signal enables all clocks to have coincident clock edges occurring at every LCM edge. A start sequence allows all PXI expansion cards in the test system to start at the same time. A MATCH line enables pincard modules to check for expected DUT outputs and either continue execution of their local test programs or loop back and repeat a section of the local test program in accordance with the result of the DUT output check. An End Of Test (EOT) line enables any one pincard module to abruptly end the local test programs running in all other pincard modules if an error is detected by the local test program in the pincard module.

The invention relates to a single-side galvanizing method for producing a hot-dip galvanized steel pipe. The single-side galvanizing method comprises the following steps of: 1) workpiece pretreatment; 2) acid washing; 3) water washing; 4) plating aid dipping; 5) neutralization of plating aid on the inner wall of the steel pipe; 6) drying and preheating; 7) hot-dip galvanization; 8) passivation; 9) cooling; and 10) inspection and packaging. By destroying a plating aid layer on the inner wall of the steel pipe and accurately controlling process parameters such as galvanizing time, the single-side galvanizing method for producing the hot-dip galvanized steel pipe has the advantages that the single-size galvanizing goal of fully galvanizing the outer wall and not galvanizing the inner wall at all is achieved, the single-side hot-dip galvanized steel pipe produced by adopting the method can be closely combined with a plastic pipe, the plastic is not apt to fall, the service life of a compound pipe is guaranteed, the product quality is greatly improved and the market promotion prospect is wide.

An embodiment of the invention provides an intelligent meeting collaborative method and a meeting terminal. The method comprises the steps that the meeting terminal receives the transmitted multimedia information of a meeting by a remote device; the meeting terminal determines whether the meeting requires the participation of a user based on the multimedia information of the meeting and preset multimedia content; the meeting terminal determines a participation status of the user; and if the meeting terminal determines that the meeting requires the participation of the user and the participation status of the user is absence, the meeting terminal transmits participation reminding information to the user, the participation reminding information being used for reminding the user to participate in the meeting. The method provided by the embodiment of the invention can accurately control the participating time of the user, so that the user cannot miss any content of the meet, thereby improving the participating efficiency of the user.

The invention which is suitable for the technical field of drying provides a fruit vacuum freeze drying method. The method comprises the following steps: prefreezing: refrigerating fruits to be dried; and carrying out five-stage drying under vacuum conditions. The fruit vacuum freeze drying method of the invention, which adopts a five-step gradient cooling mode of the heating temperature, allows heat required by water sublimation to be guaranteed, cooling to be timely, the basic balance of the heat supply and demand to maintained, the material dissolving caused by too fast heating to be prevented, and the water sublimation rate to be accelerated.

The invention discloses a fault injection system for an intelligent bus and aims at providing a test system capable of automatically injecting faults. The fault injection system comprises a key processing circuit, a microprogrammed control unit (MCU), a relay driving circuit, a display module, a plurality of relays and a power circuit for providing power for the whole system. Control ends of the relays are electrically connected with the MCU through the relay driving circuit, controlled ends of the relays are connected with an automobile controller area network (CAN) bus, the key processing circuit and the display module are electrically connected with the MCU respectively, and the MCU is connected with an automobile CAN bus controller. Detection personnel inject parameters of faults through the key processing circuit. The MCU utilizes the relay driving circuit to control the relays to inject the faults into the automobile bus and receives signals fed back by the CAN bus controller. By means of the relays serving as fault injection ends, shaking generated by manual injection is avoided. The fault injection system is suitable for detecting stability of the automobile CAN bus.

The invention provides a cooking robot, relating to the technical field of kitchen appliance and aiming to reduce labor strength. The cooking robot comprises a cooking pan, a cooking shovel, a plurality of vegetable boxes, a plurality of material boxes, a motor, a connecting rod and a control module, wherein the lower end of the cooking shovel extends into the cooking pan, the vegetable boxes and the material boxes are respectively fixed right above the cooking pan; each vegetable box and each material box are respectively provided with an outlet at the bottom thereof; each outlet is provided with an electric control check valve for switching the outlet; the motor is fixed above the cooking pan; one end of the connecting rod is fixedly connected with the power shaft of the motor and the other end is fixedly connected with the upper end of the cooking shovel; the control module comprises a singlechip, a USB communication chip and a USB connector; and the data output interface of the singlechip is connected with each electric control check valve and is connected with the motor via a positive and negative rotating controller. The cooking robot can automatically add materials and fry foods in the pan according to a recipe.

The invention provides a high-performance aerogel composite material, and a preparation method and equipment of the high-performance aerogel composite. The aerogel composite material comprises a silicon dioxide aerogel and a fiber material, wherein the silicon dioxide aerogel uses tetramethyl orthosilicate and water as raw materials and an alcohol solvent as a solvent to prepare a silica sol, and no gel catalyst is added in the silica sol. The equipment comprises a reaction part and a circulated cooling part. The method comprises the steps of preparing the sol, dipping glue, standing, gelatinizing, aging gel, dewatering, drying and the like. With the adoption of the method, materials with planar or abnormal shapes and multiple sizes can be conveniently and selectively prepared, the gelation time is controllable, no catalyst is needed, the kinds of raw materials are few, the operation is simple and convenient, and the environmental pollution is low. The material is excellent in heat-insulating property and has a wide application prospect in the fields of the civil industry, the space flight and aviation industry and the military industry.

The application refers to a radar transceiver comprising a set of transmitters (TX1, . . . , TXn) for transmitting radar chirps to targets, a set of receivers (RX 1, . . . , RXn) for receiving reflected chirps from the targets, a timing engine (1) coupled to the set of transmitters (TX1, . . . , TXn) and to the set of receivers (RX1, . . . , RXn) and adapted to transmit a first set of control signals to the set of transmitters (TX1, . . . , TXn) and to the set of receivers (RX1, . . . , RXn). The timing engine (1) is further coupled to a computing unit (4). The timing engine (1) is adapted to receive a second set of control signals generated by the computing unit (4) and transmitted via a bus. The radar transceiver further comprises a sweep control unit (2) coupled to the timing engine (1) and adapted to receive a first control signal and a second control signal from the timing engine (1), the first control signal indicating a precise start time of a chirp and the second control signal indicating a precise reset time for resetting the chirp. The sweep control unit (2) is further coupled to a controlled Phase Locked Loop (PLL) (3) adapted to generate a local oscillator (Master LO) signal which is adapted to be inputted to both each member of the set of transmitters (TX1, . . . , TXn) and each member of the set of receivers (RX1, . . . , RXn).

The invention discloses a badminton picking machine. A vehicle frame is provided with a rotation table with a cylindrical structure; a funneled circular disc covers the rotation table; four badminton drums and four baffle plates which are arranged in the same direction as the axial direction of the rotation table are uniformly distributed along the circumferential direction of the funneled circular disc; an electric motor is connected with a ratchet wheel set consisting of ratchet wheel mechanisms which are arranged in opposite directions through a transmission shaft; the ratchet wheel mechanism D on the ratchet wheel set is connected with a sprocket mechanism through a chain B, and the sprocket mechanism is meshed with crowned teeth F on the external bottom surface of the rotation table; the ratchet wheel mechanism on the ratchet wheel set is connected with a chain wheel A on a rotation shaft of a picking mechanism through a chain A; the picking mechanism comprises the rotation shaft and a ferris wheel which is fixedly arranged on the rotation shaft, a funnel is arranged between the rotation table and the picking mechanism, and the badminton drums are always positioned below the funnel; and the collected badmintons are automatically arranged neatly by using the characteristic that the directions of the badmintons are automatically adjusted in the flying process, so that the picking process is convenient to realize and is greatly simplified.

The invention discloses a multi-wire copper harness end forming device and a method for forming a multi-wire copper harness end by the aid of the multi-wire copper harness end forming device, which are used for solving the technical problem that connection quality of a multi-wire copper hardness and a conducting copper plate is poor by an existing resistance welding method. The technical scheme includes that the device comprises a worktable (1), a power source (28), a controller (29), a forming fixture and a pressurizing mechanism, high-precision forming of the multi-wire copper harness end is realized under the effect of pressure, two sides of the forming fixture are made of high-temperature-resistant ceramic insulating materials, heating current which is precisely controlled uniquely flows through the multi-wire copper harness end assuredly, a stopping mechanism and a copper hardness end positioning mechanism which are disposed on two sides of the forming fixture adopt an electronic-controlled pneumatic closing mode, a copper harness can be quickly assembled and disassembled, the device is provided with a mum-grade high-precision displacement sensor, and a method for controlling conduction time by the aid of deformation displacement quantity is adopted and matches with the forming fixture, so that stably control of high-precision dimension when the multi-wire copper harness end is formed is realized.

The invention relates to a full-automatic sterilizing quality-guaranteeing steamer and a sterilizing technology which are suitable for sterilizing and quality guaranteeing of fully closed box-packed fast food. The steamer comprises a pot body, a pot cover, a steam pipe, a return water storage tank, a vent pipe, a water cycle pipeline and a drain pipe, wherein the water cycle pipeline comprises a return water pipe, a chief spray pipe, a water inlet pipe and a water outlet pipe, the pot body is provided with a thermometer I, a pressure gauge I, a water-thermometer I and a reducing valve I, and is connected with an automatic control box, the pot cover is hermetically connected with the pot body, the pot body is connected with the steam pipe, the vent pipe, the chief spray pipe and the water outlet pipe, the return water storage tank is connected with the return water pipe and the vent pipe, the drain pipe is communicated with the water outlet pipe, the inner cavity of the pot body comprises a temperature control sensor, a water outlet hole, a steam heating pipe, an upper spray pipe and a side spray pipe, and the upper spray pipe and the side spray pipe are communicated with the chief spray pipe. The steamer can be used for automatically and accurately controlling the temperature, pressure and time, guaranteeing the sterilizing quality through heating and cooling by gradient, and saving energy and water because the hot and cold spray water is used and stored reasonably.

Precise timing control within a standardized chassis such as PXI is obtained by providing several control signals over PXI_LOCAL. A Least Common Multiple (LCM) signal enables all clocks to have coincident clock edges occurring at every LCM edge. A start sequence allows all PXI expansion cards in the test system to start at the same time. A MATCH line enables pincard modules to check for expected DUT outputs and either continue execution of their local test programs or loop back and repeat a section of the local test program in accordance with the result of the DUT output check. An End Of Test (EOT) line enables any one pincard module to abruptly end the local test programs running in all other pincard modules if an error is detected by the local test program in the pincard module.

The invention discloses an ultra-fast biasing temperature instability test system and method applied to a semiconductor device. The system comprises an arbitrary waveform generator, a waveform processor, an input probe, an output probe and a drain bias module. The arbitrary waveform generator generates a stress voltage signal, a restore voltage signal and a measuring voltage signal that have precisely controllable levels and time; and a gate voltage signal is loaded at a gate of a measured device by the input probe. According to the invention, the voltage amplitude and time that can generate a BTI effect can be controlled precisely; the BTI effect in extremely short time can be represented; and the test sensitivity is high. The representation of a threshold voltage drift can be realized in very short time; the test result is little affected by a restoring effect of a BTI effect; and thus accurate measurement is realized. The system and method can be applied to electrical characteristic studies of high-performance planar transistors using silicon, germanium, III-V class compounds as carrier channels, a fin-type three-dimensional gate, a field-effect transistor having a ring-gate (GAA) structure.

The invention provides a digital nucleic acid amplification instrument. The digital nucleic acid amplification instrument comprises a case; a temperature controller and a fan module are arranged in the case; the fan module comprises a thermoelectric cooler; the thermoelectric cooler is arranged at one side of the case; the temperature controller is arrange at the other side of the case at a position close to the thermoelectric cooler, electrically connected with the thermoelectric cooler and used for controlling the temperature of the temperature controller in real time; and the thermoelectric cooler is arranged in the case in virtue of a push-and-pull structure which can enter the case from the front and exit from the back or enter the case from the back and exit from the front. The digital nucleic acid amplification instrument is simple in structure and convenient to operate; the arrangement manner of each part is optimal, so the space of the integral instrument is reduced and production cost is lowered; and the thermoelectric cooler and the temperature controller can realize temperature circulation, accurately control the denaturation, annealing and extension temperature, time and cycle numbers of a template and realize accurate regulation and control in rapid rise and reduction of temperature in amplification.

The invention provides direct resistance heating equipment applicable to heat treatment of a slab metal specimen. The direct resistance heating equipment applicable to heat treatment of the slab metal specimen comprises an insulation shell, a main body arranged inside the insulation shell and a control device, wherein the main body comprises a bottom plate, a fixed heating electrode fixed on the bottom plate, a sliding heating electrode, a sliding device fixed on the bottom plate and a tension device, wherein the sliding heating electrode is fixed on the sliding deice; the tension device is connected with the bottom of the sliding heating electrode; the control device comprises a transformer, a thermocouple, a data collection device, a computer control system, a gear selection module, a thyristor controller and a thyristor; the thermocouple, the data collection device, the computer control system, the gear selection module, the thyristor controller and the thyristor are sequentially connected; the thyristor is connected with a primary side of the transformer; and the secondary side of the transformer is respectively connected with the fixed heating electrode and the sliding heating electrode. The equipment supports a large specimen which is to be subjected to heat treatment, can effectively prevent deformation of a conductive specimen and has excellent temperature control accuracy, repeatability and heat preservation temperature accuracy and high in efficiency.

The invention relates to a resin flowing compound material forming method which is aided by vacuum. A fiber-reinforced material is tailored and then paved in a mould cavity according to the design of layer quantity and structure of a product. Resin and firming agent are prepared into dipping glue solution which is evenly coated in the mould cavity and ensured to permeate the fiber-reinforced material. A mould is sent into a vacuum bag which is sealed and then vacuumized till a vacuum bag film closely clings to the surface of the reinforced material supported by the mould. A panel with elastic planes is used for expel foams and surplus glue solution in the vacuum bag to the edges outside the mould cavity. Then, in the conditions of normal temperature or heating and vacuum, the product gradually undergoes solidification and demoulding. The method can improve the mechanical properties and the surface quality of the compound material product, reduce the cost on production apparatuses and auxiliary materials and simplify the method operation.

The invention provides a two-day curing process of an accumulator plate. The process comprises a positive plate curing process and a negative plate curing process. A positive plate and a negative plate are cured firstly and then dried; temperature, humidity and time in each stage can be controlled accurately, the time of the whole process is shortened to be not more than two days, the quality of the cured positive plate and negative plate meets requirements, the production efficiency is improved greatly, and the process is suitable for production.

The invention relates to a spray feeder for granulated feed. The spray feeder comprises a granulated feed feeding hopper, a dispersing tank, a collecting hopper, a discharging pipe and an air source device, wherein the granulated feed feeding hopper and the collecting hopper are of conical structures, and the lower end of the feeding hopper is communicated with the upper end of the dispersing tank. A discharging valve is arranged between the feeding hopper and the dispersing tank and is subjected to on-off control by a connected controller, an air inlet in the lower end of the dispersing tank is communicated with the air source device, an air flow regulating valve is arranged between the air inlet and the air source device, the upper end of the collecting hopper is communicated with the discharging pipe, the open lower end of the collecting hopper is arranged right above the air inlet correspondingly, and the discharging pipe penetrates out of the dispersing tank. The spray feeder for the granulated feed has the advantages that automatic spray feeding of the granulated feed is achieved, so that physical labor is reduced, feed feeding quantity, feeding time and spray feeding areas are controlled accurately, and granulated feed waste is avoided.

The invention relates to an impact test box. The impact test box is characterized by comprising a high-temperature box (1), a low-temperature box (25) and a control system (28); high-temperature liquid (2) and a high-temperature box heating device (3) are arranged in the high-temperature box (1); low-temperature liquid (24) is arranged in the low-temperature box (25); the temperature of the high-temperature box (1) and the temperature of the low-temperature box (25) are both controlled by the control system (28); the high-temperature box (1) is communicated with a liquid inlet of a test piece (13) through a high-temperature pump (7) and a high-temperature liquid inflow valve (8); the low-temperature box (25) is communicated with a liquid inlet of the test piece (13) through a low-temperature pump (19) and a low-temperature liquid inflow valve (17); a liquid outlet of the test piece (13) is connected back into the high-temperature box (1) and the low-temperature box (25) through a high-temperature liquid return valve (15) and a low-temperature liquid return valve (16). The working environment of the impact test box is comfortable and safe, the test process is automatically completed completely, test conditions have unified standards, human instability factors are removed, and energy consumption is reduced.