222results about How to "Clear design ideas" patented technology

The invention relates to the field of power system devices, in particular to a novel monitoring and protecting system for a test thyristor of a converter valve module. The system provided by the invention comprises thyristor electronic equipment (TE), valve-based electronic equipment (VBE), a control protection system and the like. The control protection system computes the triggering angle of the thyristor according to the current operation condition of a converter valve and sends the triggering angle to the VBE, the VBE generates a triggering coded pulse and sends the triggering coded pulse to the TE, and the TE generates a triggering pulse and sends the triggering pulse to the thyristor, thereby triggering the thyristor. The TE generates a monitoring and protecting return pulse according to the state of the thyristor, the return pulse is transferred to the VBE through an optical fiber, the VBE gathers the uploaded state information, then the gathered information is uploaded to the control protection system through a CAN (Controller Area Network) bus, and the control protection system finishes the process of monitoring the state information of the valve module thyristor level. In the normal operation process of the converter valve, if the voltage received by the thyristor exceeds the tolerance capability of the thyristor, the thyristor can be damaged possibly, thus the protection technology of the thyristor is very important. The control protection system, the VBE and the TE finish the protection of the normal operation of the converter valve module.

The invention discloses an optimized configuration method of distributed power generation considering energy storage and considering photovoltaic randomness, comprising the following steps: firstly, based on kernel density estimation and K-means clustering method, according to a large number of historical photovoltaic output data, building a typical day scene generation method of distributed poweroutput; Furthermore, based on the theory of bilevel programming, a bilevel programming model of distributed generation is established, which combines the planning with the operation from the perspective of comprehensive social benefits and power company benefits, respectively, on the basis of the goal of the lowest annual total cost in the upper layer. Finally, the stochastic scenario generationis combined with the distributed generation bilevel programming model, and the optimal configuration scheme of distributed generation that meets the load demand is obtained by intelligent optimizationalgorithm. The bilevel programming model proposed by the invention can provide an optimal configuration scheme of distributed power generation including configuration node and capacity from differentbenefit parties, thereby effectively reducing the total annualized cost of the system.

The invention discloses a unit testing method. The method comprises the following steps of: representing the logical structure of a software unit by behavior; respectively designing test case data of the software unit according to each behavior; compiling a test function of the software unit; and testing the software unit according to the test case data and the test function. The invention also discloses a unit testing device, comprising a first input module and a testing module, wherein the first input module is used for inputting the behavior for representing the logical structure of the software unit, the test case data of the software unit and the test function of the software unit, and the testing module is used for testing the software unit according to the test case data and the test function. By adopting the method and the device of the invention, the design train of thought of the test case can be simple and clear.

The invention relates to a composite material forming technology and specifically relates to a high-precision forming mold and method for thickly-laid composite material boxes. The high-precision forming mold for thickly-laid composite material boxes is designed in the present invention and comprises a box bottom female die (1), a box body sidewall pressure transfer block (2), a knockout plate (3), a box sidewall female die (4), a male die (5) and a bottom plate (6). On the basis of the high-precision forming mold for thickly-laid composite material boxes, box prepreg layers of a composite material are laid one by one on the male die (5); every two to three prepreg layers are vacuumized and pre-compacted, and a plurality of times of vacuumizing and pre-compacting are carried out until the prepregs are completely fitted with the die; subsequently, more than three times of pre-pressing by using a press are carried out, followed by a process of opening the mold to supplement materials and shaping, and hot press molding. The accuracy of inner and outer molded surfaces of a composite material box formed by using the mold and the method of the present invention can be above +/-mm, and therefore, the composite material box can be glued in an aerospace part as a force-bearing part and may meet later assembly requirements.

A real-time calculation method of abrasion loss of a disc cutter of a hard rock tunnelling boring machine (TBM) provided by the invention relates to a data processing method particularly suitable for specific application. From the aspect of mechanical analysis of hard rock hobbing cutter rock breaking, a relationship between a cutting coefficient and a hobbing cutter rock breaking arc length is established, and the real-time calculation method of abrasion loss of the hobbing cutter in the tunneling process of a hard rock TBM is realized through adoption of tunneling parameters automatically acquired in the work process of the hard rock TBM. The real-time calculation method comprises the steps: performing real-time calculation of an equivalent hobbing cutter cutting coefficient and a knifing of a TBM cutter; performing real-time calculation of an angle with respect to the equivalent hobbing cutter rock breaking arc length; performing real-time calculation of an equivalent hobbing cutter working radius; performing real-time determination of the abrasion loss of the equivalent hobbing cutter in the tunneling process of the hard rock TBM; and performing real-time determination of the actual abrasion loss of a hobbing cutter at any one cutter spacing on the hard rock TBM cutter. According to the invention, the real-time calculation method helps to make up the deficiencies in the prior art that abrasion of a hobbing cutter of the hard rock TBM in the tunneling process cannot be directly detected in real time and the abrasion loss of the hobbing cutter of the hard rock TBM in the tunneling process cannot be reflected.

The invention discloses a multi-energy complementary microgrid energy storage optimized configuration method based on double layers of optimization models. The method comprises the steps of (1) constructing an upper layer optimization model with the economy of the energy storage device of a multi-energy complementary microgrid system in an off-grid state as a goal and the consideration of maximum output power constraint and ramp rate constraint, (2) constructing a lower layer optimization model with the economy and environmental protection of the multi-energy complementary microgrid system in a grid-connected state as a goal and the consideration of factors of power balance constraint, power constraint and the like, and carrying out single objective processing on a double-goal problem by using a random weighted method, and (3) carrying out normalization processing on the adaptive values obtained by the upper layer optimization model and the lower layer optimization model, and facilitating the weighted calculation of a final result. According to the method, the energy storage configuration requirement of multi-energy complementary system in an off-grid mode and the operation state in a grid-connected mode are considered at the same time, the improvement of the efficiency and economy and energy storage and capacity configuration are helped, and a microgrid energy storage optimized configuration model with the comprehensive consideration of off-grid and grid-connected operation modes is established.

The invention provides an intelligence material storage device which solves the problems that in the prior art, a file box is not turned over for a long time, and mildew or insect pests can be generated at the bottom. The device comprises a cabinet, the interior of the cabinet is divided into a plurality of storage grids through a plurality of vertical plates and a plurality of transverse plates;the plurality of transverse plates are bottom plates of the plurality of storage grids respectively; each of the multiple transverse plates is a structure with an inner cavity and an opening in the upper end. A ventilation device is mounted in a transverse plate at the bottom of each storage grid; The ventilation device comprises a first bottom plate and a second bottom plate; the first bottom plate and the second bottom plate are installed in the transverse plates in an up-down sliding mode and are composed of a plurality of bottom rods, a first rack and a second rack are fixed to the bottomof the first bottom plate and the bottom of the second bottom plate, and driving half gears located between the first rack and the second rack are rotatably installed on vertical plates on the two sides of each storage grid respectively. Through the first bottom plate and the second bottom plate, ventilation of the bottom of the file box is achieved, and the phenomenon that the bottom of the filebox is mildewed or damaged by pests during long-term storage is avoided.

The invention belongs to the field of electric power systems, and particularly relates to a method for evaluating relay protection states. The method includes the steps: firstly, determining single state quantities of state evaluation to acquire acquisition; secondly, building a hierarchical state evaluation system; thirdly, computing constant weight coefficients and variable weight coefficients of the single state quantities according to association rules and variable weight theories; fourthly, building membership functions of the single state quantities for state rates by a fuzzy distribution method, building a fuzzy relation matrix, and gradually computing fuzzy comprehensive evaluation result vectors; finally, judging the running state of a relay protection device according to a maximum membership principle. The influence of expert opinion subjectivity on the weight coefficients is avoided, the method contributes to solving the problem that a real running state of the relay protection device cannot be reflected by the constant weight coefficients, an accurate and simple relay protection state evaluation result is provided for operators and can serve as a state maintenance basis, the design thinking is clear, programming is easily realized, and transplantation between different programming environments is facilitated.

The invention relates to a low-power-consumption power supply system for a wireless sensor network. A single-chip microcomputer enters in different work states according to the data request state of a gateway, a data collecting front end and a signal conditioning module are controlled to be powered on and off, under the condition of having no data requests, the single-chip microcomputer sleeps and enters in a low-power-consumption mode, and the whole data collecting front end and the signal conditioning module are disconnected with a power supply. When data request signals are received by a wireless receiving module, the wireless data receiving module rouses the single-chip microcomputer to enter in a data collecting state, data are sent to the wireless gateway after being collected, and when no continuous data requests exist, the single-chip microcomputer enters in the sleep state again until the next data requests come. According to the data request state of the gateway in the wireless sensor network, the single-chip microcomputer works in the two modes of sleep and data collecting, the data collecting front end is controlled to be powered on and off according to the request state of the gateway, and then the aim of lowering power consumption is achieved.

The invention discloses a design of a novel direct-current converter valve thyristor damping loop, which can meet all requirements on electrical designs. The damping loop consists of a direct-current voltage-equalizing resistor, a damping resistor and a damping capacitor, wherein the direct-current voltage-equalizing resistor plays a role in equalizing the voltage of a converter valve and provides a loop for voltage detection of a circuit board. The damping capacitor consists of three capacitors, wherein one damping capacitor plays a role in dividing a voltage; one damping capacitor and the damping resistor are connected in series to form a damping loop; and another damping capacitor is connected in series with a quick energy-taking loop resistor to form a quick energy-taking loop of a thyristor testing and monitoring (TTM) unit. By the novel design method, the design of the direct-current converter valve thyristor damping loop is simplified as possible in the situation of meeting requirements.

The invention discloses a design method of a pre-posed diffuser controlled based on total pressure loss and relates to an aircraft gas turbine. The design method of the pre-posed diffuser is simple and effective, and the performances of different-structure design schemes can be quickly and reliably estimated in the early design phase of the pre-posed diffuser, thereby obviously reducing the design cost and improving the design reliability. The inlet size H0 of the pre-posed diffuser is determined according to the outlet size of a gas compressor; the length L0 of the gas compressor is determined according to the design length of the whole gas turbine; H0 and L0 retain unchanged in follow-up design; a critical divergence angle theta0 is determined according to the relational expression of the static pressure recover coefficient CP and the divergence angle theta in the diffuser; according to the critical divergence angle theta0, the critical value Hr of the outlet height H at the pre-posed section of the diffuser is determined based on the geometrical relationship, and geometric parameters at the pre-posed section of the diffuser are totally determined.

The invention relates to non carry borrow n value arithmetic device design method. It uses depreciation design method, divides the n value arithmetic Ph(N) truth table Lk(n) into a set of primitive table BLh(n) superposing type, respectively designs out arithmetic primitive Ah(n), uses superposing type to superpose each arithmetic primitive Ah(n) to form n value arithmetic device Ph(n). The invention has conventionalization and standardization design process, suits for fast or auto design, base device reconstruction and multiplexing. This method can be used in various non carry borrow n value arithmetic devices design.

The invention relates to a traffic signal control system, particularly to a deceleration warning system at a gateway of a trunk road. The deceleration warning system comprises an induction unit, an integrated coordination control module and a deceleration warning unit. The induction unit consist of a cell inlet-outlet access device, infrared detector, or/and a vehicle turning detection unit. The deceleration warning unit includes a vehicle deceleration yellow-flashing warning lamp (1) arranged at a place, approaching a driving direction of one side of a cell, of a trunk road and a vehicle deceleration yellow-flashing warning lamp (2) arranged at a place, far away from the driving direction of one side of the cell, of the trunk road. The integrated coordination control module receives detection signals from the cell inlet-outlet access device (4) or/and the infrared detector and the vehicle turning detection unit, determines right turning or left turning of a vehicle being driven out of the cell, and outputs a control signal to the deceleration warning unit, so that the vehicle deceleration yellow-flashing warning lamp (1) or the vehicle deceleration yellow-flashing warning lamps (1) and (2) works/work and thus a vehicle on the trunk rod to slow down. Therefore, a vehicle driven out of the cell can pass through an intersection rapidly and safely.

The invention discloses a smokeless coal-charging gas collecting pipe pressure intelligent control system. The smokeless coal-charging gas collecting pipe pressure intelligent control system comprises an internal and external interface system, a data processing system, an intelligent computing center system, an execution system, a data collection center system, a central control system, a client end and a working condition signal processing module, wherein the internal and external interface system is electrically connected with the data center system in a bidirectional way; the data center system is electrically connected with the intelligent computing center system in a bidirectional way. The smokeless coal-charging gas collecting pipe pressure intelligent control system has the advantages that the defects of lack of feedforward analysis, data mining and coordinated control and higher energy consumption are overcome; the energy is saved, the consumption is decreased, the pressure of a gas collecting pipe is stabilized, the surge of a fan is treated, the pollution to environment is reduced, the chemical production efficiency is improved, the production cost of enterprises is reduced, and the requirement of environment change is met; the accuracy is good, the stability is high, the applicability is strong, and the subsequent maintenance and upgrading is convenient.

The invention discloses a method for optimizing key parameters of a bearingless permanent magnet motor considering both suspension force and torque. The method comprises the following steps that 1, the design parameters of the bearingless permanent magnet motor are selected according to design requirements; 2, the suspension winding pole-pair number PB and the torque winding pole-pair number PM of the bearingless permanent magnet motor are determined, and in addition, PB is equal to PM+/-1; 3, the calculated value of the maximum suspension force is obtained by a finite element method; 4, the calculated value Fmax of the maximum suspension force obtained in the step 3 is compared with the suspension force design requirement value FmaxN, when the calculated value does not conform to the design requirement, namely the absolute value of the difference value of Fmax and FmaxN is greater than Xi, Xi is the design precision requirement of the maximum suspension force, the conversion coefficient Cred (Cred is greater than 0 but is smaller than 1) is increased or decreased, then, the repeated iteration is carried out until the calculated value Fmax of the maximum suspension force conforms to the design precision requirement, finally, the optimized key parameters of the bearingless permanent magnet motor, including the stator inner diameter Dsi and the stator length IFe are obtained. The method has the advantages that the design thought is clear, the design and development time is short, the operation is simple, and the like.

The invention provides an antenatal care platform for a pregnant woman, and solves the problem that a deck chair type can only examine the private part of the pregnant woman and cannot enable the pregnant woman to lie flat for other examinations. The device comprises a base, a hip bed board is installed on the top surface of the base, an upper body bed board is rotationally installed on the top surface of the base, and a leg bed board vertically slides at the right end of the base; guide sliding grooves are formed in the front inner wall and the rear inner wall of the base, a guide rack is installed on one side face of each of the two guide sliding grooves, guide gears are rotationally installed on the front side face and the rear side face of the leg bed board respectively, a linkage rodis coaxially connected between the two guide gears, and a driving worm wheel is coaxially and fixedly installed in the middle of the linkage rod; a leg driving motor is fixedly mounted at the bottom of the leg bed board, and a driving worm meshed with the driving worm gear is coaxially mounted on a rotating shaft of the driving motor. By means of the leg bed board sliding in the base, conversion between the bed and the seat can be achieved, and meanwhile, when the leg bed board slides into the base, the two leg supports can be driven to be lifted upwards.

The invention provides an intelligence material storage device and solves the problems that an ECG machine cannot be moved and carried easily, a portable ECG device often cannot be provided in case ofoutdoor danger encountering, and cardiac function detection cannot be conducted on an endangered person. The portable ECG signal detection device comprises a box, wherein a take-up device is installed in the box in a rotatable manner, the take-up device is wound by multiple detection wires, the multiple detection wires pass through the front end face of the box and are connected to an electrode ball and an electrode clamp in a dismountable manner respectively, multiple electrode ball placement grooves passing through the front end face of the box are formed in the front end face of the box, the multiple electrode balls are put in the multiple electrode ball placement grooves, multiple fixation slide grooves located above the multiple electrode ball placement grooves are formed in the front end face of the box, a fixation slide block slides in each of the multiple fixation slide grooves, fixation springs are installed between the multiple fixation slide blocks and the corresponding fixation slide grooves, and a sterilization device is installed on the inner wall of the front side of the box. The intelligence material storage device has the beneficial effects that ECG detection equipment is installed in the box and can be moved and carried easily, so that detection is provided in time for the outdoor endangered person.

The invention discloses a variable sampling NCS (Networked Control System) controller design method with the packet loss and transition probability being partially unknown, which comprises the steps of dividing a time-varying sampling period into the sum of a constant sampling period and network-induced delay, establishing a system discrete model, and transforming the uncertainty of the sampling period into the uncertainty of system parameters; modeling a networked control system with data packet loss into a Markov jump system with four subsystems, wherein the jump probability is partially unknown, and the data packet loss is described by a Bernoulli sequence; and obtaining a sufficient condition of the stochastic stability of the system by using an analysis method of the Lyapunov stability theorem and the stochastic theory, and solving a linear matrix inequality to obtain a state feedback controller. The method disclosed by the invention considers the unstable sampling period and theunknown packet loss and transition probability of the networked control system, has the characteristics of clear design idea, high stability and sample fabrication and can be applied to the engineering practice.

The invention provides an underground water level detection collector for hydrogeological exploration, and solves the problem that an existing detector cannot collect underground water at the same time when put down. The underground water level detection collector comprises a detection device arranged in a detection hole and a take-up device arranged on the ground, the detection device comprises a detection annular cylinder, a detection sensor is fixedly installed at the bottom of the detection annular cylinder, and a plurality of positioning grooves are formed in the outer surface of the detection annular cylinder; a plurality of positioning rods extending out of the positioning grooves are rotationally installed on the bottom face of the inner cavity of the annular detection cylinder, and a positioning block is fixedly installed at the other end of each positioning rod. The middle part of the annular detection cylinder is coaxially provided with a hollow outer collection cylinder with an opening in the bottom in a vertical sliding manner, the outer collection cylinder is internally coaxially provided with a hollow inner collection cylinder in a vertical sliding manner, the outer surface of the inner collection cylinder is provided with a collection port in a penetrating manner, and the collection port is fixedly provided with a collection filter screen. The underground water level detection and underground water collection work can be completed at the same time, and high practicability is achieved.