59results about How to "Control science" patented technology

The invention discloses a method for controlling roof caving under a condition of hardroof in coal mining, belongs to the technical field of coal mining and particularly relates to a quantitative method for controlling roof caving under the condition of hardroof in coal mining. The invention adopts a technical scheme that the method mainly comprises a method for determining a trough pull position, trough pull depth and explosion work amount for initial roof caving under the condition of hardroof and a method for determining the reasonable length of a hanging arch for periodical roof caving under the condition of hardroof. In the invention, the roof caving mode is controlled to reduce the pace of initial top coal collapsing of a working face, the through pull depth and the explosion work amount are the smallest in all hardroof control modes and the operation is easy; the relationship between the pace of initial top coal collapsing and the trough pull depth is specified quantitatively; based on the design working resistance of a bracket of the working face, the method for determining the reasonable length of the hanging arch of a hardroof rock beam is obtained, so the hardroof control is more scientific, quantitative, accurate and simple; and the method can be widely used in control of roof caving under the condition of hardroof in various kinds of coal mining.

The invention relates to an automated terminal monitoring device for a distribution network. The automated terminal monitoring device is used for monitoring power distribution equipment and comprises a processor board card, an instrument transformer sampling board card and an input / output control board, wherein an instrument transformer detection input circuit is arranged on the instrument transformer sampling board card, and a processor module and an alternating current sampling circuit which are mutually connected are arranged on the processor board card; a switching value input / output conversion circuit is arranged on the input / output control board card. A hardware structure is divided in a board card way, and the board cards are communicated by a bus communication protocol, so that the integrated design of the traditional hardware is avoided, and the working efficiency and the maintainability of a system can be effectively improved. The invention also relates to a monitoring system based on the automated terminal monitoring device for the distribution network. Through a combined architecture mode, the networking monitoring mode is realized for a plurality of pieces of power distribution equipment, the interaction and communication between data of monitored power distribution equipment are realized, and the monitoring system can be suitable for various different monitoring requirements.

The invention discloses a method for hard roof advanced precracking control caving in a coal mine stope, and belongs to the technical field of coal mining, and particularly relates to a hard roof advanced precracking control caving method for determining parameters of borehole layout, such as, the pore opening positions, the depth of drilling holes, the angle of the drilling holes and numbers of the drilling holes of hard roof advanced precracking drilling in the coal mine stope and calculating the explosive payload of the drilling holes. According to the characteristics of hard roof fracture,five blast holes in a fan shape are formed to form a fixed angle; the middle portion and the end of the a working face which are most difficult to break of the hard roof can be effectively pre-cracked, so that the roof can collapse as required; based on the characteristics of blasting, the blasting sequence of the blast holes from the middle portion of a cutting hole to both ends can maximize thefree surface of the blasting and reduce the explosive payload, and the operation is convenient; and a calculation formula of the explosive payload of the hard roof of preceding loosening blasting indeep hole is given quantitatively to enable the control of hard roof to be more scientific, quantitative, accurate and simple.

The invention provides an intelligent steel plate warehouse management system. The intelligent steel plate warehouse management system is characterized by comprising a barcode data collection module, a wireless transmission module, a material management module, a pc (personal computer) terminal comprising three-dimensional virtual warehouses, a mobile operating terminal and a lifting device, real-time information matching is performed between the three-dimensional virtual warehouses and actual storage locations, steel plate position changes of the actual storage locations are simulated dynamically, actual storage location changes are displayed through the mobile operating terminal, the mobile operating terminal displays the three-dimensional virtual warehouses in real time, location changes of the three-dimensional virtual warehouse are operated through a touch screen, and actual storage location information is matched with information of the changed three-dimensional virtual warehouses through the lifting device.

The present invention relates to fingerprint establishing method and standard fingerprint of angelica and Chuanxiong rhizome and their compound preparation. The standard fingerprint establishing method includes: extracting angelica and / or Chuanxiong rhizome with methanol or anhydrous ethanol, dissolving or diluting to proper concentration, high efficiency liquid chromatography detection, recording chromatogram map, and calculating relative retention time and relative peak area of the fingerprint peaks by referring to chromatograph peaks of ligustilide to establish the standard fingerprint. The present invention has the advantages of simultaneous measurement of two effective parts including water soluble and volatile oil in angelica and Chuanxiong rhizome and their compound preparation, and being scientific, simple, stable, accurate and high in repeatability.

The invention discloses an automatic irrigation system for farmland, comprising: an on-site monitoring subsystem for collecting farmland soil moisture data, soil nutrient data and weather data and uploading them in real time; an irrigation subsystem for detecting the drought degree of farmland crops and implementing Soil water and fertilizer irrigation; the central monitoring subsystem is used to analyze the data uploaded by the on-site monitoring subsystem and control the irrigation subsystem to perform farmland soil water and fertilizer irrigation. The invention integrates automatic irrigation and manual irrigation control, comprehensively considers the environmental state of crops, can realize accurate collection of crop water and fertilizer irrigation requirements and intelligent irrigation of water and fertilizer, introduces an acceptance mechanism, scientifically controls irrigation methods and irrigation volume, and improves Improve the intelligent management level of irrigation, strong operability of on-site irrigation, high irrigation efficiency, water saving and fertilizer saving.

The invention relates to a torque control method for artificial refueling before creeping speed of an electric automobile. The torque control method specifically includes the steps that under the conditions that a braking pedal and an accelerator pedal of the electric automobile are not treaded and the gear of a gearbox is engaged to the forward gear or the reversing gear, the electric automobileis accelerated to approach a target creeping speed according to a preset creeping control scheme, and at the moment, if the accelerator pedal is manually treaded, the torque of a driving motor is controlled as follows: 1, the currently required torque of the driving motor is calculated by checking a torque table under the normal driving condition of the electric automobile; and 2, the calculated torque and the driving motor torque corresponding to the creeping control scheme at the moment are compared, and the larger torque is selected as the actual torque of the driving motor. The torque control method can avoid the automobile weak feeling generated by reduced required torque when a driver treads an accelerator, so that driving stability and comfort are good.

The novel aqueous humor drainage device for glaucoma consists of T-shaped pipe and draining disc connected together. The T-shaped pipe has an elastic transverse pipe with many homogeneously distributed humor inflowing holes in the aqueous humor contacting surface and a vertical pipe communicated perpendicularly with the transverse pipe and with back pressure controlling system. The draining disc has groove in the front part for the pressure controlling system, humor storing area in the back part, humor flow holes in the bottom and ridges in the center and the edge. The pressure controlling system is constituted in the extending part of the T-shaped pipe and inside the grooves of the draining disc. The aqueous humor drainage device makes the explant attached to the eyeball closely, has expanded filtering volume to reduce the stimulation to eyeball and peripheral tissue. It has good implanting operation performance, and can lower eye pressure and control eye pressure in normal range.

The invention discloses a wireless communication method, slave, host and system applicable to radio frequency and a readable memory medium. The wireless communication method comprises the following steps that the slave receives a data link layer protocol frame sent by the host based on the radio frequency, analyzes the protocol frame according to a preset protocol format and obtains frame data codes in the protocol frame, wherein the frame data codes comprise data type codes and action codes; an attribute of the data type codes is identified, and if the attribute of the data type codes is a query type, the slave obtains state data corresponding to the data type codes and packages the state data into the action codes of the protocol frame; and the slave feeds back the protocol frame into which the state data is packaged to the host based on the radio frequency. The wireless communication method provided by the invention is applicable to an RF wireless communication technology; the host can actively set a state of a terminal device and obtain data such as state information of the terminal device, so that two-way communication is realized; and a user can control the terminal device in real time and obtain the state of the terminal device timely.

The invention relates to an air conditioning system control device based on a pressure sensor. The air conditioning system control device comprises an air conditioning system controller, the air conditioning system controller is connected with a solar radiation sensor, an outdoor temperature sensor, an outdoor humidity sensor, an indoor temperature sensor, an indoor humidity sensor, a pressure sensing ground mat and a plurality of air conditioning air supply tail ends, the air conditioning air supply tail ends are connected with an air conditioning fan three-speed controller and an air conditioning water system electric valve, and the air conditioning fan three-speed controller and the air conditioning water system electric valve are connected with the air conditioning system controller. The air conditioning system control device based on the pressure sensor has the advantages of being high in intelligent degree, wide in applicability, good in energy-saving effect, and capable of measuring personnel density, controlling the air conditioning air supply tail ends to run at maximum refrigerating capacity in summer and run in minimum heating quantity in winter when the density of indoor personnel is high and the apparent temperature rises instantly and obviously improving human body thermal comfort when personnel at a waiting hall and an entrance of a high-speed rail or a metro are intensive.

The invention discloses a smart air conditioning system based on the infrared temperature measuring technology. The smart air conditioning system comprises an air conditioning system controller, and an indoor detecting device and an outdoor detecting device which are electrically connected with the air conditioning system controller. The air conditioning system controller is connected with a plurality of air conditioner terminal air supply equipment parallelly connected. An electric rotation platform is disposed at the front end of each air conditioner terminal air supply equipment and provided with an infrared temperature measuring sensor and a remote jet flow nozzle, and the infrared temperature measuring sensor and the remote jet flow nozzle are electrically connected with the air conditioning system controller. Each air conditioner terminal air supply equipment is provided with an air conditioner fan three-speed controller matched with each air conditioner terminal air supply equipment and an air conditioner water system electric valve, and the air conditioner fan three-speed controller and the air conditioner water system electric valve are electrically connected with the air conditioning system controller. The smart air conditioning system is high in intelligence level, widely applicable, good in energy saving effect, and capable of evidently increasing human body thermal comfortableness of people in waiting halls and at entrances of high-speed railways or subways when the waiting halls and the entrances are crowded.

The invention discloses an overall city height control partition method based on comprehensive divisor evaluation. According to the overall city height control partition method based on comprehensive divisor evaluation, required data materials are extracted from relevant legal planning results such as overall city planning first and are imported to a digital technology platform and converted to impact factor control parameters according to a height control mathematic model built after researches, height control values of all street units are obtained, standardized correction is further conducted on the height control values according to a Saaty method, and the final height control partition result is obtained after conversion is conducted on the height control values. The overall city height control partition method based on comprehensive divisor evaluation is based on objective and rational analysis and comprehensive and overall evaluation modes, the data materials are easy to obtain, and therefore the city heights can be effectively controlled in a macro-level mode.

The invention discloses a correcting device of a belt filter press, comprising a sensor, a controller and an executing component, the sensor comprises an excursion sensor and a displacement sensor that adopt angle sensors, the executing component comprises an electric engine steering controller, an excursion-regulating electric engine, a transmission mechanism and a correcting roller, the angle sensors of the displacement sensor and the excursion sensor are respectively mounted right above standard positions of a filter belt and the correcting roller; the angle detection signals of the filter belt and the correcting roller, which are detected and output by the angle sensors, are transformed by the controller to output a control signal for controlling the correcting motions of the executing component. By adopting the semi-continuous correcting way having correcting roller pulse type regulation and using the angle sensors to continuously detect the displacement signal, the invention overcomes the flaws in the prior art and has the advantages of reasonable structure and simple control as well as achieves, at very low manufacturing cost, the continuous correction control precision in the continuous correcting device which requires high cost.

The invention provides an anti-hill-slip control method for battery electric vehicles. A vehicle control unit separately collects vehicle control signals and sends operation commands to a motor controller according to the collected signals; the motor controller drives a motor system to run via a power module and, at the same time, feeds the actual operation state of the motor system back to the vehicle control unit via a sensor; the vehicle control unit makes the vehicle enter an anti-hill-slip control mode according to the collected signals; in the mode, the motor system outputs hillhold torque and maintains the state for 3 seconds; the hillhold moment reduces by 20Nm every other 5 seconds until the vehicle makes micro-distance movement and the driver makes the vehicle stop by using a brake pedal or a hand brake; when the vehicle control unit detects that a brake pedal signal or a hand brake signal is invalid and the torque required by the vehicle is greater than the hillhold torque, the anti-hill-slip control mode is stopped. The method realizes vehicle anti-hill-slip control via optimization of control strategies and thus prevents the damage risk of a motor system and the shaking of a vehicle during hillhold of the vehicle.

The invention relates to a creep torque control method in the starting stage of an electric vehicle. The creep torque control method specifically comprises the steps that under the situations that theelectric vehicle is static and a brake pedal and an accumulator pedal are not stepped, a gear position of a gearbox is engaged to a forward gear or a reverse gear, and the torque of a driving motor is controlled through the following steps that 1, the torque of the driving motor is increased from zero to the first torque at the first acceleration; 2, the torque of the driving motor is kept unchanged; 3, when the travelling speed of the electric vehicle reaches the first speed, the torque of the driving motor is decreased at the second acceleration; 4, when the travelling speed of the electricvehicle reaches the second speed, decreasing of the torque of the driving motor is stopped; and 5, the torque of the driving motor is subjected to PI adjustment through the difference value between the actual traveling speed of the electric vehicle and the target creep speed, and thus the traveling speed of the electric vehicle is stabilized at the target creep speed. The creep function of the electric vehicle in the starting stage is achieved, control is precise and reliable, and the control process is scientific and reasonable.

The invention discloses a zebra crossing safety warning system suitable for a vehicle-road cooperation environment, and aims to solve the problem of insufficient traffic safety early warning capability of a street-crossing zebra crossing. The device comprises a monitoring system, a signal control system and a zebra crossing warning lamp group. According to the monitoring system, a multi-target radar detector is utilized, real-time synchronous transmission of data is achieved through an NTCIP communication protocol, and real-time recognition of traffic events is achieved; the signal control system comprises two groups of signal control units which are respectively used for controlling the phase and signal transmission of the zebra crossing LED lamp group; the zebra crossing warning lamp group comprises a zebra crossing LED lamp group and a treading power generation device located below the lamp set, so mechanical energy generated by pedestrians and vehicles on a zebra crossing can be converted into electric energy, and power is independently supplied to the zebra crossing LED lamp group. The invention can finally solve the problem of insufficient traffic safety early warning capability of the crossing zebra crossing, and has important practical significance and practical value for guiding a zebra crossing safety warning system taking establishment of a vehicle speed control andpedestrian warning system as a core.

The invention provides an intelligent distribution method for refrigerating capacity of a central air conditioner. The intelligent distribution method comprises the following steps: S1, performing comprehensive analysis on received user-demand information, indoor temperature detection data information and outdoor temperature detection data information by a cloud server, and forming control information capable of meeting the user demand; S2, receiving the control information, sent out by the cloud server, by a main unit of the air conditioner to further control refrigerant flow amount in a refrigerant pipeline so as to meet the user demand. According to the scheme, through devices, such as the cloud server, a mobile communication terminal, an indoor temperature data acquisition unit, an outdoor temperature data acquisition unit, a display with a display control receiving module, and the like, comprehensive conditioning analysis can be performed on the central air conditioner according to the use demand of a user by combining with user indoor temperature and humidity and user outdoor temperature and humidity, so that resources of the air conditioner are saved to the maximum degree on the premise that the use demand of the user is met.

The present invention discloses a hydroelectric generating set work state algorithm facing centralized control. The algorithm comprises: collecting related devices and output data of the hydroelectric generating set; defining a plurality of states, and defining the judging logic of each state; determining the state of the hydroelectric generating set according to the collected data and the judging logic, and performing statistics of the state parameters of the hydroelectric generating set; and displaying the hydroelectric generating set state and the state parameters for users to perform real-time monitoring and control. According to the collection data detection set and the state of the hydroelectric generating set, the state parameters are subjected to statistics, the state and the state parameters are subjected to display, and the hydroelectric generating set is subjected to optimizing control; and moreover, compared to the traditional method, the hydroelectric generating set work state algorithm facing the centralized control can relieve the operators' workload so as to reduce the misoperation risk of the hydroelectric generating set and reach the purposes of centralized management and control, optimized dispatching and cost decreasing and benefit increasing.

The invention discloses an aquaculture state monitoring method based on a hidden Markov model, and the method comprises the following steps: S1, building an aquaculture model based on the hidden Markov model according to the relationship between a hidden parameter extracted based on an aquaculture rule and an aquaculture dominant state, and enabling the hidden parameter to be used for representingaquaculture abnormal state information; S2, obtaining breeding dominant states at different moments, wherein the breeding dominant states comprise breeding water environment information and fish school activity information; S3, obtaining an observation sequence according to the breeding dominant state; S4, according to the observation sequence and the aquaculture model, various abnormal probabilities are obtained through calculation, if the abnormal probabilities are larger than corresponding abnormal threshold values, it is considered that corresponding anomalies appear, and if not, it is considered that no anomalies appear. The method has the technical characteristics of comprehensive monitoring, real-time monitoring and accurate abnormal monitoring.

The invention discloses a related substance analysis method for calcium dibutyryladenosine cyclophosphate or a preparation thereof. The related substance analysis method comprises the step of analyzing the calcium dibutyryladenosine cyclophosphate or the preparation thereof by using a high performance liquid chromatography. A mobile phase in the high performance liquid chromatography is an inorganic salt buffering solution and a polarity organic solvent with the pH (Potential of Hydrogen) value of 1.0-6.0. The related substance analysis method for the calcium dibutyryladenosine cyclophosphate or the preparation thereof disclosed by the invention can be used for conveniently and rapidly controlling a plurality of main related substances of the calcium dibutyryladenosine cyclophosphate or the preparation thereof; the precision and the flexibility are high; the invention provides an effective method for formulating and improving quality standards of the related substances of bulk pharmaceutical chemicals of the drug or the preparation thereof.

The invention relates to an automatic simulation adjustment method for a ballastless track of a high-speed railway. The method comprises the following steps: determining a track simulation adjustmentdatum line; searching all wave crest or wave trough intervals according to the simulation adjustment datum line and the deviation oscillogram; and establishing constraint conditions, and carrying outautomatic simulation adjustment on the ballastless track. The method solves the problems that an existing ballastless track simulation adjustment method is prone to being affected by the level of technicians and subjective factors, so that the automation degree is low (frequent manual fastener-by-fastener repeated adjustment is needed), the scheme quality is uneven, the adjustment amount is large,and the fastener replacement rate is high. A core technical support is provided for establishment and long-term maintenance of the high-smoothness state of the track.

The invention discloses a multi-cold-source intelligent Baijiu brewing thermal environment control system. The multi-cold-source intelligent Baijiu brewing thermal environment control system comprisesa convection heat exchange pit, a built-in fermentation tank, a convection heat exchange cover tank, a system controller I, a rainwater collection pipe, a jet fan, a system controller II, and an underground turning water tank and a workshop. Water inlet pipes, water outlet pipes, water charging motorized valves and water discharging motorized valves are all arranged on the convection heat exchange pit and the convection heat exchange cover tank. The inner walls of the convection heat exchange pit, the inner walls of the built-in fermentation tank and the convection heat exchange cover tank are all provided with temperature sensors. Flow sensors and liquid level sensors are installed in the convection heat exchange pit and the convection heat exchange cover tank. An acidity sensor is arranged in the built-in fermentation tank. The multi-cold-source intelligent Baijiu brewing thermal environment control system utilizes circulating water to conduct water bath convection heat exchange onthe fermentation tank, uses the jet fan to conduct air convection heat exchange in an early stage of cooling distillers grains, comprehensively utilizes multiple types of cold sources to control temperature of the fermentation tank in a suitable range, thereby saving energy consumption and improving Baijiu output rate and quality of the Baijiu. The multi-cold-source intelligent Baijiu brewing thermal environment control system can be collected and used for rainwater.

The invention discloses an intelligent internet-of-things controlled drinking water purification device and a water dispenser. A sensor for sensing water flow and / or starting timing water flow is connected in series to a pipeline formed by connecting a water inlet pipe orifice, a water purifier and a water outlet pipe orifice in series or to a pipeline formed by connecting the water inlet pipe orifice and the water outlet pipe orifice in series. A sensor for sensing water flow and / or starting timing of water flow and other sensors are connected with an embedded computer intelligent internet-of-things controller, and the computer intelligent internet-of-things controller uses solidified filter element tracing data in the computer intelligent internet-of-things controller to use the data inreal time, safe, reliable, scientific and accurate metering management and control can be carried out on each enabled filter element, replacement information and update initialization can be sent outbefore each filter element fails under any condition, and even new filter elements and accessories can be purchased in time through electronic payment based on the Internet of Things and an e-commercepath.

The invention discloses a high performance liquid phase analysis method for mildronates. The conventional analysis methods have defects that: the sample-carrying amount is small, impurities below 0.1 percent cannot be detected, and the requirements of quality control cannot be met. In the method, the mildronates are washed by a high performance liquid chromatograph, an ion exchange chromatograph method and a reversed phase chromatography method, so that all the related materials, such as mildronate methyl ester, bromine and mildronate degradation products, of the mildronates can be detected, the related materials of mildronate medicaments can be efficiently, scientifically and conveniently controlled, and an effective method is provided for the quality standard of the related materials ofthe mildronates.

The invention discloses a temperature control device and method for an electromagnetic herbal medicine roaster, and the device comprises an internal cylinder, a control box and a circuit board. The internal cylinder is disposed in an external cylinder, and two ends of the internal cylinder are respectively provided with rotating shafts. The rotating shafts and the internal cylinder are welded through electric welding. The internal cylinder is provided with a first heating region, a second heating region, and a third heating region. The second heating region is disposed between the first heating region and the third heating region. The beneficial effects of the invention lie in that the device is reasonable in structure, is simple in operation, is convenient to use, can achieve the intelligent control, can achieve the more scientific control of the herbal medicine roasting temperature, further improves the production quality of herbal medicine roasting, can achieve the remote monitoring, can store the working data for reference, can achieve the intelligent heat dissipation, and improves the practicality.

The invention provides a chocolate thermal-insulation cylinder. The chocolate thermal-insulation cylinder comprises a barrel body, a stirring device, and a motor; the upper end of the barrel body is provided with a barrel cover; the lower end is provided with a discharge hole; the barrel body is connected with a support; the stirring device and the motor are arranged on the bottom of the barrel body; one side of the barrel body is provided with a controller; and the controller is provided with a switch, a display screen , a temperature adjusting rotary knob, and a speed adjusting rotary knob. According to the chocolate thermal-insulation cylinder, the stirring device and the motor are arranged on the bottom of the barrel body, slurry uniform mixing can be realized with minimum kinetic energy, time is saved, and convenience is achieved; the display screen is used for real-time controlling on situations of the slurry in the barrel body; controlling is more scientific; the chocolate thermal-insulation cylinder can be used for thermal insulation, controlling of temperature fluctuation, and chocolate slurry degassing, deodorization, and dehydration, and slurry grease separating is prevented.