558results about How to "Avoid hysteresis" patented technology

The invention provides a pixel circuit and a driving method thereof as well as an active matrix organic light emitting display. By eliminating the current flowing through a third thin film transistor before threshold voltage compensation to prevent the lag effect of the third thin film transistor, and thus a response speed is increased; meanwhile, the current output by the third thin film transistor is determined by data voltage provided by a data wire and a first supply voltage provided by a first power supply, and is unrelated to the threshold voltage of the third thin film transistor, so that uneven brightness caused by threshold voltage deviation can be avoided. Accordingly, display problems caused by threshold voltage deviation and the lag effect of the driving transistor can be avoided by adopting the pixel circuit and the driving method thereof as well as the active matrix organic light emitting display and higher uniformity of luminance and the higher response speed are achieved.

The invention discloses a soft rock large-deformation tunnel supporting system and a construction method thereof. The system comprises a forepoling, a preliminary bracing, a waterproof layer, a secondary lining and other main structures, wherein the structures are constructed in sequence according to construction procedures. Surrounding rock is reinforced through advanced small pipe grouting by means of the forepoling, the preliminary bracing comprises lengthened anchor rods, a primary spraying layer, steel arches and a re-jetting layer, feet-lock bolts are further arranged at the positions of an upper bench and arch feet to be welded to the steel arches, the adjacent steel arches are connected through longitudinal connecting ribs, and the secondary lining is constructed at last to form the supporting system. The steps are simple and linked with one another, supporting lag caused by idling of labor force is avoided, and large-deformation of tunnels is well controlled.

The invention discloses an intelligent fresh air control device, which relates to a fresh air conditioning device of an air conditioning system. The intelligent fresh air control device mainly comprises a temperature humidity sensor, a carbon dioxide concentration sensor, a computer controller, an electrically operated valve and the like. The intelligent fresh air control device has the characteristics of intelligent control, convenient use, accurate control, energy-saving operation, small volume and low cost. And the intelligent fresh air control device also has the characteristics of improving the indoor air quality and meeting requirements of people for the indoor comfort and health. The intelligent fresh air control device can be widely applied to the air conditioning systems of various buildings such as residences, hotels, public buildings and the like and is the fresh air device which is controlled intelligently and saves energy.

The invention discloses a Hall-switch-based system for accurately positioning the zero position of the joint of a robot. On the basis of utilizing a Hall zero position switch as a position sensor, the joint rotates to the same direction when powered up and the system ingeniously selects and ascertains the zero position of the joint of the robot by using the hysteretic characteristic of the Hall signal and a Z pulse of a motor shaft, achieving the automation for accurately positioning the zero position of the joint of the robot. The system has the advantages of strong anti-interference capability, high stability, high precision, low cost and simple structure.

A hydrostatic drive system has a motor-driven hydraulic pump (1) connected to at least one hydraulic drive unit (7) by a first working line (19) and a second working line (21) forming a hydraulic circuit. The drive unit is connected to a gear set (1, 3). A first hydraulic accumulator (53) for accumulating pressure energy can be connected to one of the working lines (19, 21). A second hydraulic accumulator (55) can be connected to the other working line (19, 21). A valve device (V1, V2) permits the segment (23, 25) of each working line (19 or 21) extending to the drive unit (7) to be separated to separate an accumulator part (33) from the part of the circuit with the hydraulic pump (13). The accumulator part includes the hydraulic accumulators (53, 55) and at least one drive unit.

The invention discloses a physical simulation testing device used in graff contaminant transmission under the action of temperature-hydraulic coupling. The testing device comprises a simulation container, an air pressure control device, a temperature control device, a circulating water system and an online control and monitoring system. The testing system can realize physical simulation test of transmission dynamic characteristics of contaminants in rivers, aqueducts, sewage trenches and surrounding soil and ground water, and integrate monitoring, control and data acquisition; moreover, the testing system realizes real-time display and intelligent control of water level, temperature and pressure variations in the testing system, and carries out overall process acquisition, analysis and visualized input and output on testing data through a data acquisition program. The testing system has the characteristics of reasonable structure, convenient operation, high precision of testing data, quick automatic data acquisition, short testing cycle as well as ideal modularization, openness and expansibility, and the like. In addition, the testing system provides parameter basis to disclose the transmission mechanism of contaminants in soil and ground water under complicated environmental conditions and analyze migration and transformation rule, and also provides technical support for appraising pollution control and treatment technical proposals.

The invention discloses a method for identifying whether a webpage includes malicious content or not. One identification method comprises the following steps: resolving a URL (Uniform Resource Locator) of a webpage to be identified to extract a URL feature from the URL in order to generate a first feature set; generating a first feature vector according to the first feature set; and processing the first feature vector by using a first feature model, and outputting a first result in order to represent whether the webpage to be identified includes the malicious content or not. The invention also discloses another three identification methods, and corresponding systems for identifying whether the webpage includes the malicious content or not.

The invention relates to the application field of computers, provides a storage system failure predicting method and a storage system failure predicting device, and solves the problem that existing processing methods cannot meet high requirements of high availability storage systems. The storage system failure predicting method includes collecting failure information of different failure types in a system; preprocessing the failure information of all the failure types respectively to obtain sub failure types under each failure type and failure occurrence time series corresponding to all the sub failure types; and predicting the next occurrence time of a failure corresponding to all the sub failure types. The technical scheme of the storage system failure predicting method and the storage system failure predicting device is suitable for the high availability storage systems, and high accuracy failure prediction is realized.

The invention discloses a method and a system for synchronizing stock information. The method comprises the following steps that: total stock information in a total stock module is divided into sub stock information corresponding to each sales module according to order information of each sales module, and the valid time is respectively set for the sub stock information of each sales module; order requests are handled according to the sub stock information of each sales module; the generated order information is sent to the total stock module; and the corresponding sub stock information is synchronized with the total stock module according to the valid time of the sub stock information. The total stock module receives the order information sent by each sales module, and updates the total stock information in the total stock module according to the order information. When the method and the system provided by the invention are applied, the problem that the stock information obtained by each sales module is possibly greater than the actual total stock in the total stock module can be solved.

The invention relates to an energy consumption monitoring and evaluating system comprising a data collecting module, a control module, a data information processing module, a communication module, and an energy consumption management platform, wherein the data collecting module is used for collecting power energy consumption data, and transmitting the collected data to the data information processing module; the data information processing module calculates the collected power data to obtain an electric energy value, and transmits the electric energy value to the energy consumption management platform; the control module is used for receiving a control command emitted by the data information processing module, and controlling on / off of a power data collecting circuit; the communication module comprises a wired transmission channel, and a wireless transmission channel; the energy consumption management platform comprises a server and a data memory device, and is used for counting and analyzing energy consumption data, forming various energy consumption statistical reports and energy consumption evaluation models according to the analysis result, and guiding the energy conservation and emission reduction work. The energy consumption monitoring and evaluating system has the advantages of being accurate to sample, high in sampling efficiency, scientific and reasonable to evaluate and schedule, and the like; human disturbance factors are completely avoided.

The invention relates to a mobile terminal technical field and discloses an earphone playing-based sound adjustment method. The method includes the following steps that: external environment sound detection is started when earphone playing is performed, corresponding key information is set; and external environment sound is continuously acquired through a microphone, and a decibel value is calculated; when the decibel value of the external environment sound mutates, sound recognition processing is performed on the collected sound, and whether the external environment sound is matched with the key information can be judged according to the results of the sound recognition processing, if the external environment sound is matched with the key information, the volume of the earphone is turned down or the earphone playing is suspended, otherwise, sound acquisition and sound recognition processing are continued, when the decibel value does not mutate in a duration, the sound recognition processing is stopped. With the earphone playing-based sound adjustment method of the technical scheme adopted, important information in external environment can be automatically identified when a user uses the earphone playing, and the earphone playing can be suspended automatically when a situation requiring the attention of the user appears in the external environment, such that the user will not miss the important information of the external environment.

The invention discloses a device and method for testing deformation and water transfer characteristics of a soil body under a temperature gradient effect. The device comprises a sample chamber, a temperature gradient control device and a temperature and water content collecting device, wherein the sample chamber comprises an dual-layer hollow organic glass interlayer sleeve and a cover plate; a high-temperature control device and a low-temperature control device are arranged at the upper end and the lower end of the temperature gradient control device respectively, and the temperature gradient control device comprises a constant-temperature water bath, a heating chamber inside the sample chamber, heat transfer plates at two ends of a sample, and a full-closed circulating pipeline. The device for testing the water and temperature of the soil body can be used for testing the water content and the temperature of the soil body synchronously in real time. The device provided by the invention is convenient, simple and light in design, convenient to operate, good in integration performance, and high in testing precision.

The invention provides a UAV real-time obstacle avoidance system based on binocular vision. The UAV real-time obstacle avoidance system comprises a binocular vision ranging unit, an obstacle avoidance system processing unit and a flight control unit. The binocular vision ranging unit is based on a parallax principle, obtains two images of an obstacle by utilizing difference of positions of a left camera and a right camera, calculating positional deviation between corresponding points of the images to obtain obvious depth perception, establishing correspondence between features, and corresponding a same space physical point to mapping points in the different images, so as to obtain three-dimensional information of the obstacle. The obstacle avoidance system processing unit is responsible for performing omnidirectional obstacle detection, and planning an optimal flight path which is capable of avoiding the obstacle to the flight control unit. The flight control unit is responsible for executing instructions of the obstacle avoidance system processing unit, so that a UAV performs autonomous obstacle avoidance along the planned path. The UAV real-time obstacle avoidance system and the UAV real-time obstacle avoidance method can guarantee the safe flight of the unmanned aerial vehicle.

The invention relates to a hobbing cutter abrasion test and abrasion resistance research experimental platform and a measurement evaluation method, aiming at solving the problems that in the prior art, measurement results have hysteresis, lower in engineering guidance and large in measurement error. The hobbing cutter abrasion test and abrasion resistance research experimental platform is providedwith an abrasive box and a transmission device, wherein an output end of the transmission device is provided with a clamping element used for clamping a cutter ring of a hobbing cutter, and the cutter ring of the hobbing cutter is enabled to be positioned above the abrasive box; the clamping element comprises cutter shaft support seats arranged at the two sides, wherein the cutter shaft support seat arranged at one side is fixed at an output end of the transmission device, and the cutter shaft support seat arranged at the other side is fixed on the abrasive box; the outer ring of a cutter hubis matched with the cutter ring of the hobbing cutter, and the inner ring of the cutter hub is matched with the cutter shaft support seats; the transmission device is also provided with a sensor bracket; an eddy current sensor element is arranged on the sensor bracket and at the position corresponding to the outer side of the outer ring of the hobbing cutter. The hobbing cutter abrasion test andabrasion resistance research experimental platform and the measurement evaluation method have the advantages that measurement is carried out on the cutting basis of simulation of a working environment, and an abrasion test is effectively combined with evaluation; real-time detection is realized, the measurement accuracy is increased, and the equipment application size is wide.

The invention discloses a laser beat frequency sensing technology-based high-precision inclinator and a measurement method, and is applied to the inclination change measurement of the crust. The high-precision inclinator comprises two communicated water tanks, floaters, optical fibers, sensing fiber Bragg gratings, reference fiber Bragg gratings, fixed side plates and sensing signal generation and demodulation devices. A principle for realizing inclination measurement is dual-ring cavity single longitudinal mode fiber laser-based laser beat frequency sensing demodulation technology, and two inclination measurement implementation schemes are provided for different base lengths of a water pipe inclinator. A laser beat frequency sensing technology is applied to the measurement of a crustal inclination signal through an ingenious structural design, and a corresponding fiber water pipe inclinator device is designed; and therefore, compared with the prior art, a system has the advantages of high demodulation precision, high reliability, simple structure, lower cost, high stability, automatic temperature compensation mechanism and the like.

The invention provides a system for soil compactness measurement and automatic adjustment of finely prepared land. The system includes a soil compactness measurement mechanism, a compression depth automatic adjustment mechanism and a controller; the soil compactness measurement mechanism includes vertical pulling pressure transducers, horizontal pulling pressure transducers and monitoring wheels;the compression depth automatic adjustment mechanism includes a transverse girder, an electric cylinder and a compression roller; the controller collects the acting force performed by the soil on themonitoring wheels in the horizontal and vertical directions and measured by the pressure transducers, and obtains the soil compactness after fine soil preparation online according to a created relationship model of force performed on the monitoring wheels, the compression depth and the soil compactness; the controller feeds back and adjusts the compression depth of the compression roller in real time according to the relationship between the compression depth and the soil compactness to make the soil compactness maintain within a set target value range, and the soil compactness can meet agricultural technological requirements of planting of different crops. The system can effectively prevent differentiation of the soil compactness due to unreasonable compression depth, improve the operation quality of fine soil preparation machines and the adaptability of the fine soil preparation machines to different soil environments.

The invention discloses a tunnel boring machine attitude measuring system and a measuring method of the same, belongs to location measurement devices and measurement methods, and solves the problems of hysteretic nature of measurement of a prism guidance system, drifting of a gyroscope guidance system, limit on horizontal yaw angle measuring range and easily shielded intervisibility space in a laser target guidance system. The measurement system provided by the invention comprises an attitude angle measuring unit, a travel displacement measuring unit and a master control computer, wherein the attitude angle measuring unit and the travel displacement measuring unit are respectively in communication connection with the master control computer in a wired or wireless form. The measuring method provided by the invention acquires attitude data of a tunnel boring machine in a tunneling state, obtains information of three angles of the tunnel boring machine by mutually compensatory amendment of a gyroscope and an inclinometer, and simultaneously measures the tunneling position and distance of the tunnel boring machine by a second accelerometer and a travel displacement sensor. With the tunnel boring machine attitude measuring system and the measuring method of the same, the problems of the existing technology are solved, and the accuracy and the stability of measurement are improved.

The invention relates to a fracturing pulse sand filling system with ultrahigh flow conductivity. The fracturing pulse sand filling system comprises an external control unit, an internal controlled unit, an external fracturing pump truck unit, a sand mixing truck and a fluid storage tank. Fracturing sand-mixed fluid is accommodated in the sand mixing truck, fracturing base fluid is accommodated in the fluid storage tank, the external control unit controls the internal controlled unit, so that the sand-mixed fluid in the sand mixing truck and the base fluid in the fluid storage are alternately pumped into the external fracturing pump truck unit at intervals, and the sand-mixed fluid and the base fluid are finally alternately pumped into underground exploitation cracks at intervals by the external fracturing pump truck unit. The fracturing pulse sand filling system has the advantages that propping agent slugs added with fibers can be injected in a pulse manner under the control of the system, the flow conductivity of the prop cracks is greatly improved, a lag effect due to continuous opening and closing of an existing sand mixing truck is prevented, damage to the sand mixing truck is reduced, and pressure building during propping agent injection can be effectively prevented by the system.

The invention discloses an optimal control method for flue gas circulating fluidized bed desulphurization in the technical field of thermal power plant desulphurization. A DCS system is connected with a flue gas circulating fluidized bed and a PLC-based sulfur dioxide optimal control system. The sulfur dioxide optimal control system is formed as follows: a sulfur dioxide prediction module and a carbon dioxide calculation module are respectively connected with a data communication module and a hydrated lime control module, and the hydrated lime control module is connected with the data communication module. The data communication module and the DCS system exchange data. According to the invention, the content of CO2 in the flue gas at the inlet of a desulfurization tower is calculated through an SO2 prediction model. The feeding amount of hydrated lime can be adjusted timely, dynamically and accurately. Excessive emission of SO2 and the waste of hydrated lime and resources are avoided fundamentally, and CO2 emission is reduced to a certain extent. The method is of high reference value in engineering.

The invention relates to an on-line remote monitoring and managing system for a storage battery. The on-line remote monitoring and managing system comprises a data acquiring part, a data fusing and transmitting part and a data processing part, wherein the data acquiring part comprises a voltage acquiring unit and a current acquiring unit; the voltage acquiring unit comprises a voltage measuring device and a voltage converting module connected with the voltage measuring device; the current acquiring unit comprises a current measuring device and a current converting module connected with the current measuring device; the data fusing and transmitting part comprises a preprocessing module and a first communication module; the preprocessing module is connected with the voltage converting module and the current converting module, and the first communication module is connected with the preprocessing module; and the data processing part comprises a second communication module and a data analyzer in which data analyzing software runs. The data acquiring part acquires voltage and current data of the storage battery in real time and transmits the voltage and current data to the data processing part, so that the storage battery can be monitored in real time and be maintained conveniently.

The invention provides a network behaviour active analyzing and diagnosing method; firstly, messages are initially tested, the messages and a known protocol library are matched to remove the known protocol messages; sequentially, unknown messages are subjected to protocol analysis, the unknown messages are designated with port, IP and time interval information, and the messages are extracted to protocol automatic analysis flow to be analyzed; and finally, the analysis result is output, the protocol automatic analysis flow establishes DPI and DFI models for the designated messages and outputs the analysis result. The method of the invention can analyze and diagnose unknown messages, is a beneficial supplement by combining a prior protocol analysis model, can carry out active analysis and diagnosis on sudden network situation and newly appeared network application as well as network behaviours in which users are interested, and avoids hystereticnature of passive tracing.

The invention discloses an air conditioning system startup and shutdown control device based on an indoor heat comfort state and a control method. The device comprises an indoor data acquisition device, an outdoor data acquisition device, a computation controller and an electric valve. The indoor data acquisition device and the outdoor data acquisition device respectively comprise a temperature sensor, a humidity sensor, a black-bulb temperature sensor and a wind speed sensor, are respectively connected with a data inlet end of the computation controller, and form linkage control together with the electric valve. The computation controller is loaded with an adaptive predicted mean vote computation and comparison program. The electric valve is connected with the computation controller through a data connecting line and is connected with an original air condition system control box through a conducting wire. The control method of the device disclosed by the invention comprises the steps of comparing with an adaptive predicted mean vote obtained by the computation controller, giving out, by the computation controller, an action instruction to the electric valve, and then controlling the startup and shutdown of an indoor air conditioning system and the turning-on and turning-off of the indoor data acquisition device and the outdoor data acquisition device.

The invention discloses a pixel circuit and a driving method thereof, and an active-matrix organic light emission display device. The pixel circuit comprises first to six thin film transistors, a capacitor and an organic light-emitting diode. The grid electrode of the first thin film transistor is electrically connected to a light-emitting control line, the first terminal of the first thin film transistor is electrically connected to a first power supply, and a second terminal of the first thin film transistor is electrically connected to a first node; the grid electrode of the second thin film transistor is electrically connected to the light-emitting control line, the first terminal of the second thin film transistor is electrically connected to a second node, and a second terminal of the second thin film transistor is electrically connected to a third node; the grid electrode of the third thin film transistor is electrically connected to the third node; the grid electrode of the fourth thin film transistor is electrically connected to a first scan line, the grid electrode of the fifth thin film transistor is electrically connected to a second scan line, the grid electrode of the sixth thin film transistor is electrically connected to the second scan line, and the capacitor is electrically connected between the first node and the second node. By employing the pixel circuit and the driving method thereof, and the active-matrix organic light emission display device, images with uniform brightness can be displayed.

A multi-transformer push-pull type photovoltaic inverter comprises a DSP, a DC / DC convertor, a DC / AC convertor and a filter, wherein the DC / DC convertor, the DC / AC convertor and the filter are sequentially connected, and a composite controller which is composed of a PI controller of the DC / AC convertor, an artificial neural network model and a feed-forward arithmetic unit is arranged in the DSP. The input end of the artificial neural network model is connected with the state variable of the DC / AC convertor in the kappath sampling period, a predicted value of the output voltage which is outputted by the artificial neural network model in the (kappa+1)th sampling period is connected with the negative input end of the feed-forward arithmetic unit, the positive input end of the feed-forward arithmetic unit is connected with a set value of voltage at the kappa moment, and an output signal of the feed-forward arithmetic unit is connected with an output signal of he PI controller and then controls the duty ratio of the DC / AC convertor. According to the multi-transformer push-pull type photovoltaic inverter, the output voltage of the inverter at the next moment is predicted through the neural network model, compensation for the duty ratio at the present moment is timely conducted through the feed-forward arithmetic unit, and therefore the hysteresis quality of the PI controller is overcome, and the robustness of the inverter system is improved.

The invention belongs to the technical field of substation inspection methods, and particularly relates to an intelligent substation inspection method, which comprises the steps of S1, establishing athree-dimensional model of a substation, and performing three-dimensional video fusion display on the substation; S2, setting an inspection path of the inspection robot in the three-dimensional model;S3, enabling the inspection robot of the transformer substation to perform inspection according to a set inspection path, and upload inspection data to the centralized control main station; and S4, enabling the centralized control main station to store the inspection data and analyze and process the inspection data. According to the invention, the problems of low efficiency and poor data qualitycaused by manual recording and meter reading of operation data of power transformation equipment are solved, and the automation level of inspection operation is improved.

The application provides an identification method, server and terminal for a webpage operation behavior. The identification method for the webpage operation behavior comprises the following steps: obtaining webpage operation behavior data to be processed; obtaining one or more class clusters corresponding to the webpage operation behavior data to be processed from the historical webpage operationbehavior information database pre-classified the class clusters based on the predetermined acquisition rules, wherein each of the class clusters in the historical webpage operation behavior information database is obtained by aggregating a plurality pieces of historical webpage operation behavior information based on predetermined clustering rules; and identifying whether the webpage operation behavior to be processed is a malicious operation behavior or not based on the pre-calculated aggregation degree of the corresponding one or more class clusters. According to the identification method, server and terminal for the webpage operation behavior, whether the webpage operation behavior is a malicious operation behavior or not can be effectively identified.

The invention provides an energy-saving control method and system for an air-source heat pump system. The method comprises the following steps that S1, a building standard cooling and heating load prediction model is constructed; S2, building refinement partitioning is conducted according to the building standard cooling and heating load prediction model, a cooling and heating energy-using demanddynamic curve of all subzones of a building is generated, and the dynamic curve is updated once at intervals; and S3, an air-source heat pump unit and an indoor tail end thereof, a freezing water pump, a valve unit, a fan and a heat pump host respond to an instruction sent by a central host in time, and according to the energy-using demand dynamic curve and combination of a time delay caused by the adjustable segment length and fluid velocity, operation stages of the air-source heat pump system is divided into an equipment starting stage, a steady state operation stage and an equipment shutdown stage for staging control. The invention further comprises the energy-saving control system of the air-source heat pump system. The energy-saving control system has the advantages of being efficient, stable, free of pollution, low in energy consumption, significant in energy-saving effect and the like, and therefore the total energy efficiency of the system can be improved by 5% to 25% on the basis of the original system efficiency.

The invention discloses a system, device and method for calibrating a sensor. A calibration server and a sensor calibration information database are added in a sensor system; and when an acquisition terminal sends a sensor identification which corresponds to the physic digital data information acquired by the sensor to the calibration server, and a timestamp is also carried, the calibration server acquires the stored sensor calibration information in the sensor calibration information database based on the sensor identification which corresponds to the received physic digital data information, calibrates the physic digital data information based on the sensor calibration information and the timestamp so as to obtain the calibrated physic digital data information, and sends the calibrated physic digital data information and the timestamp to an Internet of Things application center or the acquisition terminal. As the sensor calibration information stored in the sensor calibration information database includes the sensor delaying information of the sensor, the hysteresis effect can be avoided by using the sensor calibration information for calibration.

The invention discloses a power stable solid laser and a control method thereof. The power stable solid laser comprises a base inside which cooling water flows, a heat-conducting carrier for mountingand fixing an optical crystal of the solid laser, a temperature sensor disposed on the heat-conducting carrier, a semiconductor refrigeration unit disposed between the heat-conducting carrier and thebase and driven by a bipolar current driver, and a control unit. A temperature-current double closed-loop control system is realized on the basis of the conventional temperature control system; an inner loop is a closed current loop controlled by PI, and an outer loop is a closed temperature loop controlled by PID, so as to improve the control precision of the system, and finally achieve the purpose of improving the power stability of the solid laser.