1102results about How to "Control time" patented technology

The invention discloses an integrated gating active quenching/restoring circuit. The integrated gating active quenching/restoring circuit comprises a quick detection circuit, a pulse generation circuit, a pixel control circuit, a quenching circuit and a restoring circuit, wherein the quick detection circuit is used for processing a detected anode current signal of an SPAD (Single Photon Avalanche Diode) into a pulse signal, the pulse signal can be output through the pulse generation circuit, the pixel control circuit is controlled by an output signal and a gating signal of the pulse generation circuit, the restoring circuit and the quenching circuit are respectively controlled by outputs of the pixel generation circuit, outputs of the restoring circuit and the quenching circuit can be fed back to an anode of the SPAD, and the restoring and the quenching of the SPAD can be controlled. According to the integrated gating active quenching/restoring circuit disclosed by the invention, by adopting a gating control method, the dark counting rate of the SPAD can be effectively reduced, the quenching time can be controlled by the pulse generation circuit, and the integrated gating active quenching/restoring circuit has the advantages of compact area and low power consumption.

The invention relates to the technical field of nanometer materials and photocatalytic degradation of organic pollutants, and in particular relates to a Bi/BiOCl (bismuth oxychloride) composite photocatalyst as well as an in-situ reduction preparation method and application thereof. Bi nano-particles with particle sizes of 5-20nm are uniformly distributed on a BiOCl nanosheet with 100-600nm or a the surface of a BiOCl microsphere being 1-3 microns to obtain the Bi/BiOCl composite photocatalyst; the Bi/BiOCl composite photocatalyst is prepared by gaseous-phase in-situ reduction or liquid-phase in-situ reduction; as Bi nano-particles are formed on a BiOCl substrate in an in-situ manner, the lattice matching degree of interfaces between the Bi and the BiOCl is high and the charge migration is facilitated; the Bi nano-particles have the good dispersibility, are difficult to cause agglomeration, and have the good size and distribution controllability; the Bi nano-particles can be well combined with the BiOCl and are difficult to drop off, the photo catalytic capability of the BiOCl under the existence of ultraviolet light can be improved, the spectral response range is expanded, and the visible photo catalytic capability can be acquired, and the Bi/BiOCl composite photocatalyst can be effectively applied to photocatalytic degradation of organic pollutants in a water body.

The embodiment of the invention discloses methods, devices and systems for accessing to a wireless network and sending a page message, wherein the method for accessing to the wireless network is used in a communication system comprising MTC (Message Transmission Controller) equipment and comprises the following steps of: receiving scheduling information, wherein the scheduling information indicates the time of triggering the MTC equipment to access to the wireless network and contains at least one of the equipment identifier information of the MTC equipment and the group identifier information of an MTC equipment group where the MTC equipment is in; and sending access information to the MTC equipment according to the scheduling information, wherein the access information indicates the time of the MTC equipment accessed to the wireless network and contains the equipment identifier information of the MTC equipment. By means of the invention, the time of the MTC equipment accessed to the wireless network for sending data can be controlled so that the access collision caused in such a way that a great number of the MTC equipment is randomly accessed to the wireless network can be prevented.

The invention provides an output short-circuit soft-restoration control circuit and an application thereof in a DC-DC converter. In an initial electrification process, before an output voltage of an FB port does not exceed a given reference voltage V9, a soft-restoration control module of the soft-restoration control circuit has no effect on a switch module. After the output voltage of the FB portis back to normal, if the output voltage of the FB port is lower than the given reference voltage V9, the soft-restoration control module outputs a switch-off signal to a switch control module of thesoft-restoration control circuit, and the switch control module turns off the switch module. The soft-restoration control module continues to detect the output voltage and a load current of the FB port and compares the load current with a threshold current. When the load current is lower than the threshold current of the soft-restoration control module, the soft-restoration control module opens the switch control module, and the output voltage of the FB port restores the normal state. The output short-circuit soft-restoration control circuit can reduce the chip power consumption during the output short circuit and control and output the time for restoration from the short circuit.

The invention discloses a micro-capsule essence with two-layer capsule walls and a preparation method and an application thereof. The essence comprises inner oil essence, a first micro-capsule wall inthe middle and an outer capsule wall located on outermost layer. The micro-capsule essence with two-layer capsule wall of the invention has two-layer capsule wall structure , good mechanical strengthand flexibitity; in addition, when used in cloth the micro-capsule essence has the advantage of strong washing resistance, long fragrance holding time and easy storage. The preparation method of themicro-capsule essence with two-layer capsule walls adopts complex coacervation phase separation method to prepare the essence, the technological design is seasonable, the maneuverability is strong, micro-capsule essence with different fragrances can be designed according to different demands; in the preparation process, the mechanical strength of the micro-capsule essence can be effectively controlled so as to control the duration time and degree of the frangrance of the micro-capsule essence; in addition, the finished product of the micro-capsule essence with two-layer capsule walls preparedin the invention has high qualification rate and the micro-capsule essence with two-layer capsule can realize industrialized production.

The invention relates to a database high availability implementation method and a device. The method includes (S1) setting a heartbeat meter sub thread to judge whether update of a heartbeat meter of a primary library fails or not, setting a standby library sub thread to judge whether a standby library is available or not, setting a gateway sub thread to judge whether gateways where the primary library and the standby library are located are available or not, (S2) setting a primary thread to detect judge results of the heartbeat meter sub thread, the standby library sub thread and the gateway sub thread in a circulating mode, and proceeding the step (S3) if the judge results of the heartbeat meter sub thread, the standby library sub thread and the gateway sub thread are positive, and (S3) executing switching from the primary library to the standby library. According to the method and the device, whether the heartbeat meter is successfully updated serves as a standard to judge whether a database is available, whether the standby library is available ( whether the standby library delay meets requirements, whether the standby library can be visited, and the like) serves as a standard to judge whether the standby library can be used for switching, and the switch between the primary library and the standby library is effectively controlled through flexible configuration for switching conditions.

The invention provides a high-strength focusing ultrasonic treatment guiding and control system and method based on a six-shaft mechanical arm. The system comprises a high-strength focusing ultrasonic energy transducer power driving module, a B-mode ultrasonic image acquisition module, a master control computer, a motion scanning module, a ring array focusing energy transducer and a B-mode ultrasonic diagnosis energy transducer. The motion scanning module is composed of an electric translation bench and the six-shaft mechanical arm. According to the invention, through connecting a composite probe which has an inner side provided with the B-mode ultrasonic diagnosis energy transducer and an outer side provided with the ring array focusing energy transducer with the six-shaft mechanical arm, at the time when a high-strength focusing ultrasonic treatment focus can be accurately monitored, accurate and controllable movement of the high-strength focusing ultrasonic treatment focus is ensured, the composite probe has a large-scope scanning space range and the freedom of a scanning path, and a sufficient motion scope is guaranteed for finishing scanning of all treatment focuses of high-strength focusing ultrasonic treatment at a time.

The invention relates to a method for controlling the rice steaming and boiling of an electric rice cooker, which comprises the following steps: (1) confirming the boiling maintenance time t and the boiling maintenance temperature X of the electric rice cooker according to different rice kinds and mouth feeling; (2) starting the electric rice cooker and soaking, dewatering, heating and boiling rice according to a set procedure; (3) achieving the boiling maintenance temperature X= 130-165 DEG C after time t1=15-35 min and maintaining boiling in the electric rice cooker for the maintenance time t=6-10 min; and (4) cooking the rice after achieving the maintenance time t. The invention provides the method for controlling the rice steaming and boiling of the electric rice cooker, which controls the temperature and the time in the process of boiling maintenance, improves a temperature difference between the electric rice cooker and rice boiling, enables the rice to be fully gelatinized and enables water to be fully vaporized and absorbed by rice grains, thereby boiling the rice with high quality.

The invention relates to a rice-cooking control method for an electric rice cooker. The method comprises the following steps: (1) setting an immersion time (t) and an immersion temperature (K) according to different rice types, mouthfeel and pressures, wherein the immersion time (t) is in the range from 3 min to 8 min and the immersion temperature (K) is in the range from 50 DEG C to 80 DEG C; (2) starting a heater until a measured immersion temperature reaches the preset immersion temperature (K) after a time period (T), wherein the time period (T) is in the range from 5 min to 20 min, and defining the time period as t after reaching the preset immersion temperature (K); and (3) after reaching the preset immersion time (t), according to the preset program, heating to boil, keeping boiling under the preset pressure (P) inside the rick cooker, and simmering and exhausting after boiling. The rice-cooking control method can control the temperature and the time of the immersion and swelling process of different types of rice under different pressures to meet the requirement for starch gelatinization, and ensure good quality of the cooked rice.

The invention relates to a method for preparing a graphene reinforced copper base composite material, and aims to solve the problems of weak graphene dispersibility, high cost and complex process in a traditional method for preparing the graphene reinforced copper base composite material. The method uses oxide graphene as a reinforcing front body; the prepared oxide graphene and copper powder are ultrasonically mixed in ethanol solution; and the oxide graphene and the copper powder are uniformly dispersed by using a low-cost ball milling technology. Finally, the vacuum hot pressed sintering is adopted to prepare the graphene reinforced copper base composite material. The composite material, prepared by the method, has the advantages of good graphene dispersibility, simple and efficiency preparation method and easiness in realization of large-scale production.

The invention relates to a preparation method of preserved rice noodles. The preparation method includes the steps of rice machining and sand filtration, smashing, humidity adjustment, extrusion for gelatinization, extrusion for emerging of silk noodles, cutting off, checking and packaging. The preparation method is characterized by taking the rice noodles before extrusion for emerging of silk noodle and drying as materials, wherein the water content of the rice noodles at the moment is 25wt%-30wt% and the temperature is 40-60 DEG C; cutting the rice noodles to 17-19cm; soaking the rice noodles for 60-100min in Didazuril bactericide solution with concentration of 50%-60% and temperature of 35-45 DEG C, wherein the ratio of material to liquid is 1wt%:5wt%; conducting vacuum packaging, wherein the vacuum degree is 0.09MPa-0.092Mpa; thermally sterilizing the rice noodles for 0.5h-1h in a water bath maintained at the temperature of 90-95 DEG C; cooling packaging bags with circulating cold water so as to fast reduce the temperature in the center of the packaged material to 30-35 5 DEG C; blowing the water at the outer surfaces of the packaging bags to dry; checking whether the packaging bags bulge and break and conducing metal detection; putting the rice noodles together with auxiliary materials such as matched sauce bags in a packaging box; and sealing the packaging box, thus obtaining a finished product. For the preserved rice noodles produced according to the preparation method, the water content is higher than 60% and the quality guarantee period is longer than 6 months; the infusing and dispersing performance is good; caking does not happen and undesirable odor does not emerge; the dissolving starch rate of the rice noodles is low; after culture for 1 month at the temperature of 37 DEG C, the rice noodles achieve 1426g of hardness, 26.14gs of crisp performance, 512 of viscosity, 0.513s of viscoelasticity.

The invention relates to a polymer-type water glass curing agent with easily-controlled curing time and high toughness. The curing agent is mainly formed by polymerizing and copolymerizing double bonds-containing acids such as crylic acid, methacrylic acid and the like and double bonds-containing esters such as butyl methacrylate, vinyl acetate, hydroxy-ethyl methacrylate and the like by latex. The polymer-type water glass curing agent of the invention is a novel water-soluble water glass curing agent, which can control the curing time of the water-soluble grouting materials by controlling the content of carboxyl and ester group in a polymer. By using the curing agent, a water glass consolidating body has vey high compressive strength and toughness, synthetically overcomes the shortages of too fast curing time, high corrosiveness, low consolidating body strength and the like of an acid curing agent which is commonly used in the water glass grouting materials and the shortages of poor water solubility, slow curing time and the like of an organic ester curing agent, and can be widely applied in the field of anti-seepage stoppage engineering.

The invention discloses a method for synthesizing inorganic perovskite nanowires. According to the method, a CsPbBr3 nanowire which has a length of several millimeters, a diameter of only about 10 nmand an ultrahigh draw ratio is prepared at a low temperature by utilizing a solvothermal method and an anion exchange method, and nanowires CsPbI3 and CsPbCl3 are obtained by virtue of a simple anionexchange process. The method has a great effect of promoting industrial large-scale preparation of inorganic perovskite nanowires and is expected to further realize application in various aspects suchas photoelectric detection, laser and solar cells and the like. The method disclosed by the invention is simple, controllable, high in yield, uniform in morphology, low in reaction temperature and suitable for large-scale production.

The invention discloses a processing technology of a green tea with flower fragrance. The processing technology comprises the sections of: fresh tea leaf spreading; tea leaf rocking; inactivating; rolling; drying; and finishing. The invention has the following beneficial effects: addition of technologies of tea leaf rocking and low temperature refrigeration and standing change aroma type of green tea, effectively reduce bitter and astringency taste of tea, effectively ensure degree of green of the tea, and reduce polyphenol content of the tea; on the premise of preventing the tea from turning red, time and frequency of tea leaf rocking, and time and temperature of refrigeration and standing are well controlled to prevent the leaf margin from turning red, as well as maintain quality characteristics of light soup and green leaf of the green tea, so that the rocked leaves produce a large amount of floral substances; and standing of the rocked leaves is carried out under condition of a constant temperature of 11 (+/- 1 DEG C); meanwhile the standing time is prolonged correspondingly, so as to increase the content of the effective components in the leaves, change the proportion of primary effective components, and further expand and develop the flower fragrance.

The invention relates to the technical field of gluing, in particular to full-automatic robot gluing equipment and a process technology which are used for two-component polyurethane gluing. The full-automatic robot gluing equipment is characterized in that the equipment comprises a three-axis robot or a four-axis robot or a five-axis robot or a six-axis robot, a glue supply device, a two-component gluing head, a two-station automatic gluing workbench or a multi-station automatic rotary gluing workbench, plasma treatment equipment, a waste cleaning solution recovery device and an intelligent control system. The three-axis robot or the four-axis robot is of a gantry type or cantilever type structure. The two-component gluing head and a plasma treatment head are fixed to the three-axis robot or the four-axis robot and can be linked in the X axis, the Y axis and the Z axis. The five-axis robot or the six-axis robot is an articulated robot, and five-axis linkage or six-axis linkage of the two-component gluing head and the plasma treatment head can be achieved. According to the novel polyurethane gluing equipment and the process technology, the proportion is precise, glue tape performance is stable, and the sealing effect is good.

The invention provides a phase change fracturing method. The method includes the following steps that a fracturing fluid is injected into a stratum to generate cracks in the stratum, and injection ofthe fracturing fluid is stopped after the to-be-generated cracks reach preset requirements; a phase change reaction liquid and a time delay heat generating agent which can be subjected to a phase change reaction at preset temperature are injected into the stratum; after injection of the phase change material liquid is substantially completed, the time delay heat generating agent exerts a heat generating action to make phase change of the phase change material liquid to complete phase change fracturing. According to the provided technical scheme, since there is no solid phase injection, not only can the friction resistance of tubular columns be effectively reduced, but also the happening time and progress of the phase change reaction can be effectively controlled due to the use of the delayheat generating agent, so that a better fracturing effect is achieved. Especially for low-temperature reservoirs, a heat generation effect of the delay heat generating agent greatly increases the rate of the phase change reaction so that the phase change material liquid can rapidly form a solid phase at a preset position, the phase change time is shortened, and the probability of successful construction is increased.

The invention relates to an energy control method of an urban rail super capacitor storage system. The method comprises the following steps that: a direct-current power supply network voltage Udc and a super capacitor module group terminal voltage Usc are collected respectively and an output branch current Isc of the super capacitor module group is connected within each control period; a charging-discharging threshold calculation module outputs a charging threshold value Uchar and a discharging threshold value Udis in real time based on the super capacitor module group terminal voltage Usc within each control period; and according to a relation between the charging threshold value, the discharging threshold value, and the direct-current power supply network voltage Udc, a current control period of an urban rail super capacitor storage system is determined to be in a charging state, discharging state or a standby state. According to the energy control method provided by the invention, multiple sets of urban rail super capacitor storage systems can work in a coordinated mode and thus the urban rail super capacitor storage systems can absorb brake energy of the train fully and effectively, thereby improving the energy utilization efficiency of the urban rail power supply system. Moreover, fluctuation of the direct-current side voltage of the power supply system can be inhibited.

The invention relates to a two-foot robot track generating and modulating method based on the certified program generator (CPG) mechanism. The method comprises the following steps: building up a gravity center track generator of a two-foot robot by utilization of a CPG unit; designing a mapping function, and mapping output signals of a CPG into a three-dimensional gravity center track of the robot; modulating a working space track of the robot by utilization of the on-line generated three-dimensional gravity center track, and further obtaining robot tail end track signals with adaptability due to the fact that the CPG has rich dynamic characteristics and can produce gravity center track signals with adaptability; and designing a motion engine to map dynamic characteristics of the tail end of the robot to a joint space of the robot so as to realize adaptable walking of the robot. Compared with the prior art, the method starts from the gravity center and the tail end track of the two-foot robot, explores to improve a bionic method of walking capacity of the two-foot robot, improves walking adaptable capacity of the two-foot robot to a certain extent, and enables the robot to have certain robustness.

The invention discloses a real-time control method for denitrification by an enhanced circulating activated sludge method, which belongs to the field of biological denitrification of sewage and is suitable for advanced treatment of urban sewage. The effect of circulating activated sludge method on nitrogen and phosphorus removal is not ideal. The steps of the present invention: open the agitator in the main reaction zone at the same time as entering the water, and carry out the denitrification process under the anoxic condition, and stop stirring when a maximum value appears on the pH value curve and an inflection point appears on the ORP curve; Oxygen is supplied to the mixed solution to degrade organic matter and nitrify nitrogenous compounds, and stop aeration when a minimum value appears on the pH curve; repeat the above steps until the end of the water inflow stage, and react with the aerobic aeration stage end of period. The following process is similar to the traditional CAST method. It enters the sedimentation, drainage, and idle stages in turn, repeating all steps in turn and discharging sludge regularly. The whole process is completed by a real-time control system, which is easy to operate, low in cost, strong in impact load resistance, and not prone to sludge bulking.

The invention relates to a four-foot robot working space track generating method based on the certified program generator (CPG) mechanism. The method comprises the following steps: four CPG units distributed at four foot ends of a robot being utilized to be mutually coupled to constitute a CPG network capable of generating periodical output wave-shaped signals; obtaining a working space track of the robot after conducting dimension expansion and functional transformation on the periodical output signals by utilization of a designed mapping function; benefiting from rich dynamic characteristics of the CPG network so that the on-line generated working space track can be modulated based on CPG parameters and has certain adaptability; and designing a motion engine system to map the working space track to a joint space of the robot so as to control freedom degree of all joints of the robot and realize control of walking with certain adaptability. According to the method, bionic mechanism simulation is conducted based on the tail end rail of the robot. Compared with the prior art, the method has the advantages of improving environment adaptability and robustness of robot walking, and the like.

The invention provides a preparation method of a hydrophilic ultra-filtration membrane, wherein the method comprises the following steps: introducing high-valence metal salt containing Fe3+, Al3+ and the like into film casting solution to perform cross-linking reaction with hydrophilic additives in the film casting solution so as to limit dissolution and loss behaviors of the water-soluble hydrophilic additives in film forming and running processes. The method is convenient to operate and easy to control, applicable to preparing the hydrophilic macromolecular ultra-filtration membrane by a dry or wet process, fixing the hydrophilic additives containing oxygen and nitrogen functional groups, such as polyvinyl alcohol (PVA), polyethylene glycol (PEG), polyethylene oxide (PEO) and polyvinyl pyrrolidone (PVP). The method is capable of effectively improving and stabilizing the hydrophilic property of the ultra-filtration membrane and resolving easy loss and uneven distribution problems of the hydrophilic additives in the prior art.

The embodiment of the invention discloses a method for reminding time. The method comprises the following steps: starting to accumulate use time when application software in a terminal begins being at a use state; obtaining self use state information of the current terminal; obtaining an allowable operation time threshold value according to the use state information; if use time reaches or exceeds the allowable operation time threshold value, sending out time reminding information. Correspondingly, the embodiment of the invention discloses a terminal. With the adoption of the method for reminding the time, a corresponding time notice is sent out to a user according to the use state of the terminal so as to prevent the terminal from being overused by the user and control the use time of the user in a healthy and reasonable range.

The invention belongs to the field of display and discloses a wiring board, a flexible display screen and a display device, wherein the wiring board is connected with a drive chip and a display panel. The drive chip and the display panel are provided with signal output interfaces and signal input interfaces in pairs. The wiring board comprises fan-out lines which are used for being connected with the signal output interfaces and the signal input interfaces which are arranged in pairs. The wiring board comprises a substrate. Multiple first connecting lines with the first resistivity are arranged on the first surface of the substrate. Multiple second connecting lines with the second resistivity are arranged on the second surface, opposite to the first surface, of the substrate. At least a part of the fan-out lines are formed by connecting the first connecting lines and the second connecting lines. According to the wiring board, due to the facts that at least a part of the fan-out lines are formed by connecting the first connecting lines and the second connecting lines and the first connecting lines and the second connecting lines are located on the different surfaces of the substrate and are different in resistivity, and then the resistance of the fan-out lines can be controlled.

The invention discloses a sampling and collecting system of SO3 in wet method desulphurization system tail flue gas. The system includes a probe for acquiring wet flue gas, a heating device connected with the probe and used for heating the wet flue gas, a dedusting device connected with the heating device and used for removing solid particles comprising dusts and the like in the flue gas, a condensing device connected with the dedusting device and used for condensing sulfuric acid steam in the flue gas, an examining device connected with the condensing device and used for examining whether the sulfuric acid steam collected in the condensing device reaches saturation and collecting the sulfuric acid steam in the flue gas when the saturation is realized, a drier connected with the examining device and used for removing water in the flue gas, an adjusting valve connected with the drier and used for adjusting the flow velocity of the flue gas to ensure that sampling is constant speed sampling, a vacuum pump connected with an outlet of the adjusting valve and used for pumping the flue gas, and a wet gas meter connected with an outlet of the vacuum pump and used for determining the flow, temperature and pressure of the flue gas and discharging the flue gas.

Disclosed is an implementation method to simulate a real incoming call or conversation of a mobile phone, which is characterized in that: 1, after a user touches off a corresponding hot key, or clicks a corresponding function column in a menu, or clicks a corresponding icon on a touch screen, the mobile phone automatically or passively acquires the number or/ and the information of the contact person; 2, the mobile phone simulates the state of a real incoming call and conversation through a software program and hardware of the mobile phone by making use of the acquired number or/and the information of the contact person; 3, the mobile phone automatically ends the incoming call simulation state according to the setting of a timer, or the user ends the incoming call simulation or conversation simulation state, or the mobile phone ends the incoming call simulation or conversation simulation state when the mobile phone detects a real incoming communication event. Through the implementation method, the user can freely control the incoming calls to get the effect of mixing the false with the genuine; the simulation effect is vivid and natural; the method is convenient to use; the method enables the user to leave politely with a proper excuse; therefore, the method better satisfies the requirements of the people and enables the people to better control their time. The implementation method is simple and reasonable.

The invention discloses a knitted sweater and the production technology thereof. The raw material of the knitted sweater is yarn blended with spun silk, Modal fiber, milk fiber and cashmere. The weight ratio of the spun silk ranges from 50 to 60 percent, that of the Modal fiber ranges from 20 to 30 percent, that of milk fiber ranges from 10 percent to 15 percent and that of cashmere is between 5 to 15 percent. The production technology for knitted silk comprises (1) selection of raw white yarn, (2) dyeing, (3) rewinding, (4) panel knitting, (5) linking, (6) stitches, (7) hand sewing, (8) rinsing, (9) drying and (10) ironing. The knitted sweater has natural wrinkle resistance, higher hygroscopicity and warmth, and soft handfeel.

The invention discloses a method for preparing a large powder metallurgy TZM blank with uniform carbon and oxygen distribution, which comprises the following steps of: 1, weighing raw materials; 2, mixing powder, namely mixing the weighed four raw materials twice under vacuum or the protection of inert gas, mixing titanium hydride powder, zirconium hydride powder and carbon black powder to prepare mixed powder, adding a volatile organic solvent into the mixed powder, uniformly stirring to prepare suspension, adding the weighed molybdenum powder into the suspension for uniform mixing, and adding residual molybdenum powder for uniform mixing; 3, performing cold isostatic pressing; and 4, sintering by keeping the temperature at stages, namely adopting a vacuum sintering furnace and sintering at three stages, wherein the process comprises the following steps of: raising the temperature at the first stage, raising the temperature at the second stage, and sintering at high temperature. The preparation method has the advantages of reasonable design, simple and convenient operation, and good using effect. The carbon content in the center and on the surface of the prepared larger-size TZM blank can be controlled to be approximately consistent, and the oxygen content in the center and on the surface of the TZM blank also can be reduced to a lower level.

The invention provides a magnetic separation enhanced type electromagnetic thermal desorption method and device for remediating contaminated sites. The method is characterized in that ferromagnetic materials, such as reducing iron powder, are doped into contaminated soil in an ex-situ mixing and stirring manner, the contaminated soil spirally stirred is heated by using electromagnetism, and a thermal desorption heat transfer gasifying effect is improved through the in-situ electromagnetic eddy heating of the ferromagnetic materials; the reaction activity and oxidation reduction capability of the ferromagnetic materials are improved when the ferromagnetic materials produce heat; after thermal desorption is finished, the ferromagnetic materials of which the surfaces react and adsorb pollutants can be separated from the contaminated soil through magnetic separation, recycled and reutilized; and the continuous remediation of contaminated soil is realized. The device also can be used for the in-situ remediation of contaminated soil. After the ferromagnetic materials are added to the soil in situ through a ploughing stirring device, the soil is heated in situ by utilizing an electromagnetic induction coil to carry out excitation eddy heating in the contaminated soil, pollutants are desorbed, and at the same time, the reaction activity of the magnetic materials(for example, reducing iron powder) can be improved; and after reaction is finished, the iron powder can be separated from the contaminated soil through a magnetic separation technology. The device also can be placed in soil to realize in-situ oxidation reduction degradation. The method and device are suitable for the in-situ thermal desorption remediation of circumjacent large area of low-concentration contaminated soil.

The invention relates to a fertigation control system for planting crops. The fertigation control system comprises a fertilizer container, a water source device, a control system and the like, wherein the control system comprises a controller and control branches, the controller is used for respectively controlling startup devices of the fertilizer container and the water source device by the control branches, wherein a fertilizer outlet pipe of the fertilizer container is converged with a water outlet pipe of the water source device and is then branched into a plurality of irrigation pipes communicated to an irrigation region. The fertigation control system disclosed by the invention can provide a fine fertigation scheme according to program control and soil situations and growth requirements of different stages of crops, is capable of sufficiently absorbing moisture and nutrients and cannot cause soil pollution.