46results about How to "Helps to master" patented technology

The invention relates to a medium and low voltage distribution network energy efficiency evaluation method based on accurate load measurement data. A complete set of whole-process comprehensive energy efficiency evaluation method for a static and dynamic distribution network is constructed in a distribution network energy efficiency evaluation system. Through the method, various attribute elements of the distribution network can be scientifically, integrally and comprehensively reflected. The system is clear in theory. Compared with the traditional energy-saving and loss-reduction modification measures only based on a quarter line loss method and a sweeping approach, the system has more scientificalness and pertinency and provides a brand new thinking and method for energy efficiency evaluation and energy-saving modification for the distribution network. The invention has a valuable reference to specific distribution network energy efficiency evaluation in various regions, makes pointed references to the distribution network planning and modification construction and also helps distribution network operating personnel master the operating condition of distribution network energy efficiency. Scientific and reasonable distribution network construction and modification projects can be instructed and arranged in actual evaluation and planning works, reliable and economic operation of the distribution network is ensured, and huge economic benefits are created.

The invention discloses an atmosphere pollutant automatic monitoring sample-reserving system. The atmosphere pollutant automatic monitoring sample-reserving system comprises an atmosphere pollutant on-line monitor, a main controller, a memory, a sample-reserving controller, and an automatic sample-reserving apparatus. When an atmosphere pollutant in a target environment of an atmosphere pollutanton-line monitor exceeds a standard or exceeds a preset value as a pollution source point location contribution value, the main controller controls the powering-on of the automatic sample-reserving apparatus by controlling the sample-reserving controller to collect the atmosphere pollutant in the target environment, and the automatic sample-reserving apparatus is turned off after collection is completed. The atmosphere pollutant automatic monitoring sample-reserving system uses characteristics of an atmosphere pollutant on-line traceability system and the automatic sample-reserving controller,and through combination of real-time on-line monitoring and off-line analysis, scientificity and accuracy of monitoring data are guaranteed.

The invention is in use for solving issues that current technique cannot generate, compare, and display error of Modbus CRC. In the invention, bus interface (BI) of Modbus of first communication unit (CU) in main node, BI of Modbus of second CU in slave node, and BI of Modbus of third CU in interference node are connected to bus of Modbus in sequence. The method includes steps: inputting request with 8 bytes to main node; depressing start button; operation for receiving synchronous messages from slave node and interference node is ended, and response message, and interference message are sent out; according to Modbus protocol, interference message calculates CRC1 of CRC value, and CRC1 is compared with CRC of received CRC value; obtaining result of CRC error. The invention can generate, compare, and display error of Modbus CRC, and get out intuitive result.

The invention discloses an air pressure type artery postoperation hemostat and relates to the technical field of medical care instruments. The hemostat comprises an upper tank and a lower ring, wherein the upper tank is divided into an inner circular cavity A and an outer ring cavity A, and the inner circular cavity A and the outer ring cavity A open downwards; a one-way air inlet valve is mounted on one side of the top face of the inner circular cavity A, and a one-way air release valve is mounted on the top face of the outer ring cavity A; a puller bolt is arranged at the center of the top face of the inner circular cavity A in a threaded connection mode, and the outer side of the puller bolt is sleeved with a telescopic sealing sleeve; the lower end of the upper tank and the upper end of the lower ring are sealed in a loose joint mode; the lower ring is divided into an inner circular cavity B and an outer ring cavity B, the inner circular cavity B and the inner circular cavity A are identical in size and are sealed in a butt joint mode, and the outer ring cavity B and the outer ring cavity A are identical in size and are sealed in a butt joint mode; a cotton pad is arranged in the inner circular cavity B and soaked with etamsylate. The air pressure type artery postoperation hemostat has the advantages that negative pressure of the outer ring cavity A enables the device to be tightly adsorbed to the body of a patient without a bandage, positive pressure of the inner circular cavity A is used for balancing blood pressure to reduce bleeding, operation is easy, and time is saved.

The invention discloses a computer network principle teaching system based on libpcap, which can help students to improve the operational ability, understand typical computer network protocols and master computer network knowledge, thereby improving the teaching quality of computer network principle courses. The system comprises a driving layer module, a data link layer module, a neighbor subsystem module, a network layer module, a routing subsystem module, a transmission layer module and a Socket interface layer module. In combination with packet capture analysis, students are required to program by themselves to achieve typical computer network protocols, understanding and understanding of the students on the computer network principle are deepened in this way, and meanwhile the practical ability of the students is improved. According to the method, the object-oriented programming model is utilized, and a typical protocol separation mode is adopted, so that the overall realization difficulty is reduced, students can realize a single protocol step by step and gradually master the whole system, and the computer network principle is mastered.

The invention discloses a teaching simulating system suitable for an international economics and trade major. The system aims to settle problems of high difficulty in performing correction and scoringon voice input of a student, high difficulty in making the student comprehensively master professional knowledge and tedious control logic in prior art. The system comprises a table and an integratedcontrol box. The top plane of the table is provided with a display device, a keyboard and a mouse. The integrated control box is arranged below the table. The integrated control box is internally provided with a central processor. The input end of the central processor is electrically connected with a voice input subsystem, a fingerprint input subsystem and a keyboard input subsystem. The outputend of the central processor is electrically connected with a pronunciation correcting subsystem, a pronunciation scoring subsystem, a voice output subsystem and a displaying output subsystem. Furthermore the output ends of the voice input subsystem and the pronunciation subsystem are electrically connected with the display output subsystem. The teaching simulating system can realize functions ofa foreign trade English system, a network lesson system, an online testing system and an online homework system. The teaching simulating system facilitates population and furthermore reduces realization cost.

The invention provides an airport apron pipe network constant pressure control system simulation device comprising a background computer and a simulation stand. The simulation stand comprises truckles, a framework, a color lamp system, a PLC control system, an airport sand table demonstration model and an airport apron pipe network constant pressure fluid feeding system. The advantages of the device are that various facilities and equipment and the implementation situation in the airport apron pipe network constant pressure fluid feeding system can be visually, stereoscopically and dynamicallydemonstrated through cooperative use of the airport sand table demonstration model and the airport apron pipe network constant pressure fluid feeding system and the color lamp system so that the students are enabled to master the regulations of the civil aviation industry, the idea of pipeline design, the oil product transportation situation and other actual engineering problems. The water is used as the medium to replace oil for teaching so as to be safe and convenient. The rotating speed of the oil feed pumps can be adjusted according to the pressure, the flow and other parameters in the pipe network so that the output flow and pressure of the oil feed pumps can be controlled and the requirement of simulating constant pressure refueling of different airplanes can be met.

The invention relates to a system for fixing the sending waiting condition and waiting time of CAN node report, and a relative method, wherein present technique can not effectively fix the forming time/delay of MAC mechanism and report sending; the CAN interfaces of the first communication unit (1-4), the second communication unit (2-4), and the third communication unit (3-4) are connected to the CAN bus; it comprises: (1) starting system; 92), initializing the first node (1); (3) setting the mark field, control field, and data field of first node (1); (4) pressing the first start sending button (1-5); (5) initializing the second node (2); (6) pressing the second start sending button (2-5); (7) pressing the first start sending button (1-5); (8) initializing the third node (3); (9), initializing the first node (1); (10) pressing the second start sending button (2-5). The invention can fix the forming time/delay of MAC mechanism and report sending real-time.

The invention discloses a multimedia playing device for classrooms, comprising a fixed frame which is provided with fixed holes. A projector is embedded into the fixed frame, and a projection device is arranged on the projector. A display screen is arranged at one side of the projection device. Three indicating lamps are arranged at one side of the display screen. The projector is internally equipped with a controller. An audio module and a video module are arranged under the controller. The projector is electrically connected with a computer, the computer is electrically connected with the controller, and the controller is electrically connected with an electric shaft. The outer wall of the electric shaft is equipped with a dust cover. The electric shaft is internally equipped with a motor. A curtain is arranged under the electric shaft. The bottom of the curtain is connected with a stop lever which matches the dust cover. The multimedia playing device for classrooms is helpful to solving tough problems in teaching and avoiding forgetting, makes teaching for students of different levels possible, provides a large amount of information, is of large capacity, saves space and time, and improves the teaching efficiency.

The invention relates to the technical field of chemical plant safety, in particular to a chemical plant online safety diagnosis and accident disposal guidance method and system, and the method comprises the following steps: A), building and storing a monitoring table and a plan, and entering a step B if an alarm is given; b) if the trigger condition is not satisfied, closing the alarm, otherwise,triggering the plan and the update table to update the corresponding alarm condition, and displaying the accident handling content; c) reading the monitoring data of the chemical plant in a period T,if the monitoring data meets an alarm condition, giving an alarm, improving the accident level by one level, and displaying the accident grading disposal content of the corresponding level; and D) ifthe monitoring data meets the release condition, releasing the alarm, and returning to the step A. The invention has the substantive effects of assisting the disposal of the accident, displaying thesub-region state of the chemical plant for the operator on duty, making a personnel evacuation scheme in a targeted manner, reducing the accident loss, and improving the personnel safety in the accident.

The invention provides a medium-and-long-term electric quantity safety checking method and system. The method comprises the following steps of step 1, constructing a coupling relationship among main bodies according to acquired basic data, 2, respectively calculating the electric quantity margin of each main body based on the coupling relationship between the main bodies, and taking the electric quantity margin of each main body as the corresponding electric quantity bucket of each main body, 3, distributing a to-be-checked electric quantity plan to the electric quantity bucket corresponding to each main body based on the coupling relationship between the main bodies, 4, respectively comparing the electric quantity buckets with the electric quantity plans of the main bodies, and judging whether the electric quantity plan of any main body exceeds the electric quantity bucket or not, otherwise, ending, and step 5, adjusting the electric quantity plan and going to the step 3. According tothe method and the system, a complex medium-and-long-term electric quantity checking problem is simplified into an electric quantity margin calculation and decomposition process of an electric quantity related main body, i.e., an intuitive process of calculating'barrels' and loading'barrels', so that the understanding and application of operating personnel are facilitated, and the quantitative explanation of electric quantity adjustment of the society is further facilitated.

The embodiment of the invention discloses a mathematical oral arithmetic expression result error cause analysis method and device, equipment and a storage medium. The method comprises the steps of obtaining a to-be-analyzed oral arithmetic expression comprising an operand, an operator and an operation answer; according to the operands and the operators, calculating correct answers of all the oralarithmetic expressions; comparing the operation answer of each oral arithmetic expression with the correct answer, and determining the oral arithmetic expression with the wrong operation answer in each oral arithmetic expression as a target oral arithmetic expression; for each target oral arithmetic expression, analyzing a target question type of the target oral arithmetic expression, and calculating an error result set of the target oral arithmetic expression according to an error cause type included in the target question type; and matching the operation answer with the error result set, anddetermining that the error cause type to which the successfully matched error result belongs is the error cause type of the target oral arithmetic expression. Analysis of error reasons of the low-grade mathematical oral arithmetic expression is achieved, students can understand and master questions and parents or teachers can know the mastering situation of the students easily, and implementationis easy.

The invention discloses a protein crystallization teaching kit. Articles in the kit include the following: three different protein precipitants, lysozyme powder, a dilution buffer, a dye, a filter, a crystallization plate and a sealing film. The invention also relates to a protein crystallization method which makes use of the teaching kit. The teaching kit disclosed by the invention, which contains reagents and materials required by a lysozyme crystallization experiment in biological science teaching therein, can reduce the working intensity of experiment preparation, and the teaching kit is simple and convenient to operate, conducive to experiment personnel to master and complete a protein crystallization experiment within a relatively short time, and capable of improving an experimental efficiency and saving cost; therefore, the teaching kit can be widely popularized in biological basic teaching experiments.

The invention discloses a method for effectively matching a practicer with training questions based on data statistics. The method comprises the following steps: calculating a total score or a total score rate or a rank percentage of actual scores of the training questions of students participating in training; calculating the score rate or difficulty of a single question of the test questions trained by the students; establishing a statistical graph of all single-channel questions in the trained test questions; calculating a ratio of a curve slope to an average curve slope or a difference value of score rates or a difference value of difficulties between front and back adjacent sections in the statistical graph; judging whether the ratio of the curve slope to the average curve slope between the front and back adjacent sections is smaller than a first threshold value or whether the difference value of the score rate is smaller than a second threshold value or whether the difference value of the difficulty is smaller than a third threshold value; and if not, pushing the type of questions to the practicer corresponding to the previous section. According to the method, a database about the students and the test questions is established by counting the answer data of each student to each test question, so that the practicer and the test questions are effectively matched, and the training pertinence is improved.

The invention discloses a retail terminal cigarette digital display storage cabinet which comprises a cabinet body, a base, a power switch, a battery, an LED lamp and partition plates, and an inner cavity of the cabinet body is divided into a plurality of square carton cigarette stacking cavities through the partition plates; the retail terminal cigarette digital display storage cabinet is characterized in that an elastic pressure box is arranged on a bottom plate of each square grid type carton cigarette stacking cavity, a carton number display panel is arranged on a front panel of the right side wall, a rectangular supporting plate is arranged at the upper end of each elastic pressure box, and LED lamps corresponding to carton number scales on the carton number display panel are arranged on the inner side of the carton number display panel; the rectangular supporting plates are connected with the LED lamps through a conversion conductive display device; and a groove is formed in the side wall of the periphery of the bottom of each square grid type carton cigarette stacking cavity, a U-shaped push-and-pull frame is arranged in each groove, and the U-shaped push-and-pull frame is matched with the position where the first layer of carton cigarettes are located. The manufacturing cost is low, standard and unified storage management is achieved, the number of cigarettes of various specifications can be quickly counted, and the working efficiency is improved.

The invention provides main electronic brick bodies and a connection method. The main brick bodies do not need to be connected through wires, every two main brick bodies are automatically attracted together when connected end to end, and the electric conduction and signal transmission functions of the main brick bodies can be achieved; every two main brick bodies repel each other when connected not end to end, so that contacts cannot be in contact, bricks are conveniently connected end to end, and wrong connection of the bricks can also be avoided.

The invention discloses a training device for leg pressing exercise after martial arts, which comprises a frame body, wall bars are slidably arranged at one end of the frame body along the height direction, a pedal is arranged at the other end of the frame body, a limiting piece for limiting the sliding of the wall bars is arranged at the edges of the wall bars, and lapping grooves are formed in the frame body on two sides of the pedal along the height direction. Holding rods are erected on the lapping grooves, an abutting device used for abutting against the knee joint position of the leg lifted by a practicer is arranged between the pedal and the wall bars, the abutting device comprises a driving part, a mounting seat and an abutting rod, the mounting seat is fixedly connected with the frame body, the driving part is arranged at the bottom of the mounting seat, the abutting rod is slidably arranged on the mounting seat in the height direction of the frame body, an output shaft of the driving part is sleeved with a cam, one end of the abutting rod abuts against the outer wall of the cam, and a soft cushion is arranged at the other end of the abutting rod. The training device is convenient for a beginner to carry out rear leg pressing training, and meanwhile, the training device is simple in structure and has better adaptability.