139results about How to "Strong field adaptability" patented technology

The invention discloses a camera on-field calibration method in a measuring system, belonging to the field of computer vision detection, in particular to an on-field calibration method for solving inside and outside parameters of cameras in a large forgeable piece size measuring system. Two cameras and one projector are provided in the measuring system. The calibration method comprises the following steps of: manufacturing inside and outside parameter calibration targets of the cameras; projecting inside parameter targets and shooting images; extracting image characteristic points of the images through an image processing algorithm in Matlab; writing out an equation to solve the inside parameters of the cameras; processing the images shot simultaneously by the left camera and the right camera; and measuring the actual distance of the circle center of the target by using a left theodolite and a right theodolite, solving a scale factor and further solving the actual outside parameters. The invention has stronger on-field adaptability, overcomes the influence of impermeable and illegible images caused by the condition that a filter plate filters infrared light in a large forgeable piece binocular vision measuring system by adopting the projector to project the targets, and is suitable for occasions with large scene and complex background.

The invention discloses an intelligent continuous insect killer which comprises a support. A support plate is arranged on the support, an insect detecting sensor assembly, a gas type power component, an insect blower component, an insect trapper assembly, an insect collecting tank, a control system and an insect killer component are arranged on the support plate, the insect trapper assembly is arranged at an air outlet end of the insect blower component, the gas type power component is connected with a push rod of the insect blower component and provides power for the push rod, the insect killer component is arranged at the front end of the insect trapper assembly, the insect collecting tank is arranged at the lower end of the insect killer component, and the insect detecting sensor assembly is arranged in the insect trapper assembly. Detected insect density is transmitted to the control system by the insect detecting sensor assembly, the gas type power component works under the control of the control system, an insect killing system only starts to work when insect killing is necessary, accordingly, electric energy can be saved, electric fields generated by high-voltage power grid can be prevented from affecting insects when the insects approach the power grids, and insect killing effects can be improved. The intelligent continuous insect killer has the advantages of energy conservation, environmental protection, convenience in use, simple structure, easiness in manufacture and low cost.

The invention relates to the technical field of molecular markers, and particularly relates to an SNP molecular marker related to pod and seed size on a peanut A06 chromosome and application thereof.The SNP molecular marker related to the pod and seed size on the peanut A06 chromosome is A06-107901527, and contains a nucleotide sequence with G / T polymorphism at the 12 site of the sequence shown in SEQ ID NO. 1. In the SNP molecular marker A06-107901527, the genotype of the site with the polymorphism is GG, the character value corresponding to the peanut pod and seed size is high, the genotype is TT, and the character value corresponding to the peanut pod and seed size is low. The SNP molecular marker is used for identifying the character phenotype of the peanut pod and seed size, theproduction cost can be greatly saved, and the selection efficiency can be improved.

The invention provides an air-extrusion type oil transporting and refueling bag which comprises an outer bag, an inner bag, an oil guide pipe, flanges, an oil inlet and outlet valve and a charging valve, the outer bag is of a cylindrical structure, the inner bag is of a bag-shaped structure and arranged inside the outer bag, the opening end direction of the inner bag is as same as that of the outer bag, two ends of the inner bag are connected with two ends of the outer bag through the flanges, a closed cavity is formed between the inner bag and the outer bag, both the oil inlet and outlet valve and the charging valve are arranged on the flange at the opening end, the oil inlet and outlet valve is communicated with the inner bag, the charging valve is communicated with the closed cavity, the oil guide pipe is arranged inside the inner bag, and one end of the oil guide pipe is connected with the oil inlet and outlet valve through a rope. The air-extrusion type oil transporting and refueling bag is convenient to use and high in field adaptability.

The invention discloses a mechanical airplane jack. The mechanical airplane jack comprises a supporting frame, a rapid lifting mechanism, a rapid driving mechanism for driving the rapid lifting mechanism to move or position in a no-load stroke, a bearing sleeve and a heavy load driving mechanism for driving the bearing sleeve to move or position in a load stroke, wherein the rapid driving mechanism is mounted on the bearing sleeve; the lower end of the rapid lifting mechanism enters into the bearing sleeve and is in transmission match with the rapid driving mechanism; the heavy load driving mechanism is mounted on the supporting frame and is in transmission match with the bearing sleeve. According to the mechanical airplane jack, the rapid driving mechanism of the rapid lifting mechanism is separated from the heavy load driving mechanism of the bearing sleeve, so that the rapid lifting mechanism can rapidly achieve the target position, and the lifting time of the mechanical airplane jack can be sharply shortened.

The invention discloses a portable elemental analyzer applicable to field exploration, comprising a sample feeding system, an electrolyte discharge plasma generation system, a light path collecting and light filtering sorting system, a data processing system and a control system; the sample feeding system diverts a sample into the electrolyte discharge plasma generation system to emit an elemental spectrum by glow discharge, the light path collecting and light filtering sorting system acquires and transmits the spectrum to the data processing system, and the control system performs displaying and acquiring finally; the control system controls the sample feeding system, the electrolyte discharge plasma generation system, the light path collecting and light filtering sorting system and the data processing system. The invention provides a metal element analyzer free of advanced sample acidifying or gas carrying, more stable in discharge, simple to operate, low in price and small in size. A detection method of the invention enables automatic detection, and is simple to perform and high in field adaptability so that field detection speed and precision are greatly improved.

The invention discloses a measuring method for mud-rock flow's impact force which adopts a concrete reinforcement structure contact fiber grating mud-rock flow monitoring device. In this method, first, the maximal arm (Lmax) of impact force is determined. Second, by experiments, a fitting equation F= f(Epsilon) is established between the impact force and the strain of aprimary strain fiber grating sensor under the maximal arm(Lmax) of impact force . The strain characteristics of the strain fiber grating sensor under an arbitrary impact force (FX)are determined again to further determine the arm (Lim) of impact force. Through lever arm equivalent transformation, the arbitrary impact force (FX) and the strain value Epsiloneq of the primary strain fiber grating sensor under the maximal arm (Lmax) of impact force can be obtained. Finally, the value of impact force FX can be solved through the fitting equation. According to the invention, the principle of the method is reliable; the computing process is scientific and convenient; the impact force of a highly disruptive mud-rock flow can be measured; and the magnitude of damage energy of the mud-rock flow to channels and houses can be reflected directly. The method is practicably suitable for field use and can be widely applied.

The invention provides a high-clearance intertillage, weeding and fertilization machine. Middle-and-later-period operation of field high crops can be achieved through traction of a high-clearance tractor. The machine comprises a traction frame and a plurality of sets of weeding, ditching, fertilizing and soil covering devices, and the traction frame is connected with the weeding, ditching, fertilizing and soil covering devices through a four-rod floating part; the weeding, ditching, fertilizing and soil covering devices comprise mounting frames, weeding components, ditching and fertilizing parts, intertillage soil covering parts and land wheel profiling parts which are sequentially installed on the mounting frames. On the basis of the high-clearance intertillage, weeding and fertilizationmachine, the traction frame comprises a portal frame, walking wheels and one or more adjustable connecting frame; the walking wheels are arranged on vertical frames on two sides of the portal frame; the adjustable connecting frames are fixed to a cross beam of the portal frame through U-shaped bolts, and the difference of the number N of the weeding, ditching, fertilizing and soil covering devicesand the number M of the adjustable connecting frames is 2.

The invention provides a portable type multi-component gas diluting device. The portable type multi-component gas diluting device comprises a diluting pipeline, a first to-be-diluted pipeline and a second to-be-diluted pipeline, wherein the diluting pipeline is used for conveying diluting gas; the first to-be-diluted pipeline is used for conveying first to-be-diluted gas; the second to-be-diluted pipeline is used for conveying second to-be-diluted gas; the first to-be-diluted pipeline, the second to-be-diluted pipeline and the diluting pipeline are communicated by a tee valve, and the flows of the first to-be-diluted pipeline, second to-be-diluted pipeline and diluting pipeline are collected onto an exit pipeline after passing through a mass flowmeter, and discharged through a standard gas outlet. The portable type multi-component gas diluting device has the advantages that by arranging multiple to-be-diluted pipelines and diluting gas, multiple types of gases with target concentrations can be prepared simultaneously; the multi-component gas can be simultaneously prepared, and the study problem of crossing interference of gas in the smoke detection field is solved.

The invention discloses a soil temperature monitoring system for a frozen earth area. The soil temperature monitoring system comprises a plurality of temperature sensing buses embedded in the soil, a plurality of digital temperature sensors are packaged in the temperature sensing buses, the temperature sensing buses are connected with data acquirers arranged outside the soil, the data acquirers are connected with a data acquiring instrument arranged outside the soil through the wireless short-distance transmission technology, and data transmission is performed between the data acquiring instrument and a backstage data center via the wireless network. The soil temperature monitoring system has the advantages that the problem that data cables arranged underground are easy to break off is solved, influence on measuring accuracy from wiring is reduced, temperature convection between the sensors is prevented from influencing data accuracy, and frost heaving is prevented from damaging a temperature measuring system.

The invention relates to a power frequency electric field acquisition method based on the periphery of a high-voltage power transmission line, and the method comprises the following steps: S10, enabling the power transmission line to be simplified meeting the engineering precision requirement in order to facilitate the calculation and analysis of the electric field distribution around the power transmission line; S20, calculating a potential coefficient matrix of the power transmission line by resetting analog charges and matching point positions in the simplified model of the power transmission line; and S30, calculating the charges of the wire per unit length according to the potential coefficient matrix and the voltage vector, obtaining an electric field generated by the charges by using a superposition theorem, finally verifying the calculation precision, and repeating the step S20 if the calculation precision does not meet the requirements. Compared with the prior art, the methodhas the advantages of relatively high calculation precision and the like.

A circulating water intelligent adjusting device comprises a valve body, a self-operated temperature control part, an automatic pulsating flow washing part and a cut-off part. By means of the circulating water intelligent adjusting device, the production cost can be lowered on the premise that the functions of the circulating water system are achieved, and the descaling function and the cut-off function are achieved. The circulating water intelligent adjusting device can play the water-saving effect; the pulsating flow washing part can generate pulsating flow, and thus the dirt growth speed of a pipeline can be effectively decreased; the cut-off part can achieve the flow cut-off function, and therefore field replacement is easy.

The invention discloses a cotton aphid control method. The method is achieved by multiplying natural enemies in the field through sorghum aphid breeding on sorghum and by planting sorghum on the edge of a cotton belt. The ratio of the number of rows of the cotton belt to the number of rows of a sorghum belt is 6-10:1. A row gap of the cotton belt is 30-50 cm, and a row gap of the sorghum is 40-50 cm. The number of rows of the sorghum in the sorghum belt is 1-4, and the sorghum is one or two of sweet sorghum or glutinous sorghum. The adopted sorghum is annual crop and is applicable to diversified cropland cotton regions in Yangtze river and Yellow river basins in our country. Host specificity of the sorghum aphid is high so that the sorghum aphid can not jeopardize local main crops such as cotton and corn. Planting of sorghum is relatively simple, the sorghum is strong in adaptability to the field, and special management is not required. By breeding the sorghum aphid on the sorghum belt, the density of the natural enemies in the field is increased, and an effect of controlling cotton aphid damage to cotton is achieved.

The invention discloses a soil loosening ditching machine. The soil loosening ditching machine comprises a driving device arranged on a rack, the bottom of the rack is provided with a walking wheel system, the driving device is connected with an intermittent walking wheel driving mechanism, an intermittent soil loosening mechanism, an intermittent soil loosening tooth swing mechanism and a ditching bulldozing mechanism separately through a driven piece. In the soil loosening ditching machine, under the joint action of the intermittent soil loosening mechanism, the intermittent soil loosening tooth swing mechanism and the ditching bulldozing mechanism, soil loosening teeth can achieve vertical and deflection motion, and therefore the functions of soil entering, deflection, soil loosening, soil stirring and bulldozing are achieved; in a soil loosening tooth upper arm, under the intermittent driving action of arc sliding teeth matched by a fan-shaped swing block, intermittent back-and-forth driving of extreme positions of soil loosening teeth, and set-point deflection and set-point resetting of the soil loosening teeth are achieved.

The invention provides a multi-parameter integrated continuous online monitoring system for water quality of underwater. The monitoring system comprises a large barrel fixed on a support, a small barrel is disposed in the large barrel, and the support is provided with a plurality of wheels at the bottom. The large barrel is provided with a water outlet at the bottom, and the small barrel is provided with a water inlet at the bottom. The top of the small barrel is open, top of the small barrel is provided with a barrel cover, and a dissolved oxygen electrode, a conductive electrode, a pH electrode and an ORP (oxidation-reduction potential) electrode penetrate through the barrel cover to extend into the small barrel respectively. Water flow enters from the water inlet at the bottom of the small barrel, overflows from the top of the small barrel and flows out of the water outlet at the bottom of the large barrel. By the design of a flow-through pool of the small barrel sleeved by the large barrel, the electrodes are stretched into the small barrel through the barrel cover of the large barrel, and accordingly water quality to be detected is isolated from the outside so as to reflect truth of water quality. The whole system is designed in a demountable 'handcart' type, so that the monitoring system can move conveniently and flexibly, the handcart can be demounted to conveniently move, and motion operation is facilitated for a user according to the environment.

The invention discloses a multi-domain composite type initial rainwater collecting and purifying comprehensive ecological treatment system. The system comprises a primary purifying area, a strengthened purifying area, a deep purifying area, a purifying stabilizing area and the like. The system has the advantages that the system is designed according to the different ecological environments of to-be-treated water, the treatment effect of non-point source pollution is guaranteed, engineering treatment effect is guaranteed while bank protection stability and water landscape are considered, and the system is low in construction cost, high in ecological feasibility and treatment efficiency, good in operation stability, good in landscape effect, easy to popularize and use, and the like.

The invention relates to a shallow-layer seismic prospecting system based on wireless data transmission, comprising a shallow-layer seismic prospecting master station, a shallow-layer seismic prospecting triggering substation, and a plurality of shallow-layer seismic prospecting detection substations. The shallow-layer seismic prospecting master station comprises a data processing host and a wireless access point. The shallow-layer seismic prospecting triggering substation comprises a first wireless boundary device and a first shock sensor for sensing earthquake focus shock signal. Each shallow-layer seismic prospecting detection substation comprises a second shock sensor, a filter, a signal gain controller, an analog-to-digital converter, a processor and a second wireless boundary device.The invention is advantageous in that the anti-interference capability is stronger, and the shallow-layer seismic prospecting result can be more accurate.

The invention discloses a soil landslide infrasonic signal recognizing and field monitoring device. The device comprises a plurality of ground infrasonic monitoring stations and an underground infrasonic monitoring station which are arranged in an array; the ground monitoring stations and the underground monitoring station are separately connected with a data acquiring center; each ground infrasonic monitoring station comprises a monitoring pile (1), a stylobate (3), a first infrasonic sensor (4) and a waterproof box (5), each monitoring pile (1) is mounted and fixed on the corresponding stylobate (3) of the ground, and each first infrasonic sensor (4) is mounted in the corresponding waterproof box (5) of the corresponding monitoring pile (1). On the basis of the device, the invention further provides a soil landslide infrasonic signal recognizing and field monitoring method, and landslide can be monitored. A ground and underground combined monitoring method is adopted, interference ofan infrasonic source in the environment is eliminated, and the landslide infrasonic signal detecting ability is improved.

The invention discloses a multifunctional hydraulic cleaning filter car. Existing hydraulic oil filter cars cannot provide various filter precision grades and cannot conduct data analysis on hydraulicoil contaminants. Return oil of the multifunctional hydraulic cleaning filter car needs to pass through a return oil detection port, a magnetic filter and a coarse filter. Output oil needs to pass through an output oil detection port, an adjustable filter precision loop, a fine filter and a main oil tank oil suction filter. The return oil detection port and the output oil detection port are eachcomposed of a sampling stop valve, a pressure reducing valve, a flowmeter, a throttling valve and a pressure gauge and are connected with a detection device. The adjustable filter precision loop is composed of a first special fine filter, a second special fine filter, a first two-position three-way reversing valve, a second two-position three-way reversing valve, a second stop valve, a first checkvalve and a second check valve, and three filter precisions can be selected. An oil storage tank is connected with a main oil tank through an oil storage tank oil suction filter, an oil storage tankoil pump and an oil supplement connector in sequence. The three different filter grades are provided by the multifunctional hydraulic cleaning filter car and can be freely switched, and the on-site adaptability is high.

The invention discloses a sowing furrowing profiling device. A profiling wheel (6) is pivoted at the bottom of the front part of a machine frame; a round disc furrow opener (7) is pivoted at the bottom of the back part; an output shaft of a motor is connected with an input shaft of a variable pump; an oil inlet of the variable pump is connected with an oil outlet of a servo oil cylinder; an oil inlet of the servo oil cylinder is connected with an upper oil opening of a hydraulic oil cylinder (5); the bottom of a variable pump moving servo slide valve slide rod (4) of the variable pump is lapped on the profiling wheel, so that the variable pump moving servo slide valve slide rod vertically moves along with the profiling wheel; an oil outlet of the variable pump is connected with the hydraulic oil cylinder through a two-position four-way valve (18); when the two-position four-way valve is not electrified, an oil outlet of the two-position four-way valve is communicated with a lower oil opening of the hydraulic oil cylinder; when the two-position four-way valve is electrified and is positioned in the second position (A), the oil outlet of the two-position four-way valve is communicated with the upper oil opening of the hydraulic oil cylinder; the lower oil opening of the hydraulic oil cylinder is connected with the oil inlet of the servo oil cylinder; a piston of the hydraulic oilcylinder is fixedly connected with a pivot shaft of the round disc furrow opener.

The invention discloses a field checking method for an intelligent substation protection equipment download configuration virtual terminal. The field checking method comprises the steps of reading a protection equipment process layer downloading configuration file, parsing and combining to form protection equipment SV, a GOOSE reception control block and a GOOSE transmission control block after the virtual terminal is checked to be correct, transmitting power grid normal state, faulty state SV and GOOSE messages to the protection equipment and conducting a GOOSE switching-out test, and checking whether the protection equipment download configuration virtual terminal is correct in the field. The field checking method provided by the invention is a means for checking whether the field protection equipment virtual terminal download is correct, does not rely on an SCD file, is high in field checking efficiency, is convenient for timely discovering potential hidden dangers of SCD file virtual terminal download, and is high in field adaptability.

The invention provides a grabbing device for moving wall / floor tiles, which comprises a machine stand, an extraction cylinder, a limit pin, a grasp frame, a grasp cylinder, a grasp claw, a gauge board and a reset spring, wherein the body of the extraction cylinder is fixed in the machine stand; a fish eye joint is arranged on a piston rod of the extraction cylinder and is hinged with a connection block in the grasp frame through a hinging shaft; the limit pin is arranged at the lower end of the machine stand; the connection block is provided with a limit hole matched with the limit pin; one end of the reset spring is connected with the lower end of the machine stand, and the other end of the reset spring is connected with the grasp frame; the grasp cylinder is arranged at two end s of the grasp frame through a grasp cylinder seat; the piston rod of the grasp cylinder is connected with the grasp claw; and the gauge board is positioned on the grasp frame connected with two sides of the connection block. As the grabbing device in the scheme grabs from the upward side of wall / floor tiles and fully utilizes the characteristic that the upper edges of the wall / floor tiles are naturally together and tight when the wall / floor tiles are vertically placed and stacked, the grabbing device does not need to use special tightening devices, greatly simplifies the structure thereof, and is stronger in on-site adaptability in the grabbing process.

The invention provides a pile pulling device and method of a shield traversing an existing bridge and belongs to the technical field of bridge structure reconstruction. By means of the pile pulling device and method of the shield traversing the existing bridge, the technical problems existing in the prior art that construction in small spaces is difficult, has great influence on the surrounding environment and is high in construction cost are solved. The technical scheme of the pile pulling device is that the pile pulling device of the shield traversing the existing bridge comprises two partsof a pile head pullout mechanism and a pile body pullout structure. The pile pulling device and method of the shield traversing the existing bridge have the beneficial effects that segmented upward pulling is performed on a pile body through an H-shaped steel and a cuboid steel block, the pile pulling reliability is guaranteed, efficient construction is also achieved in the limited underground space, influence on superstructures or surrounding buildings is reduced, meanwhile, the method that a steel protection tube is sunk in to perform separation and friction reduction on the pile body and asoil body is adopted, and the pile pulling device and method of the shield traversing the existing bridge have the advantages of being high in stability, fast in construction speed and the like.

The invention relates to an intelligent asparagus harvesting machine and belongs to the technical field of agricultural machinery harvesting. Before green asparagus is harvested, an operation route isplaned; a navigation system controls the self-walking of the machine and sets the forward speed of the machine; during harvesting, the identification and height detection of the asparagus can be completed through an ultrasonic technology and an image recognition technology; sensors can generate signals to transmit to a processor when the heights of the green asparagus meet harvesting heights; theprocessor issues a cutting command so as to make corresponding air cylinders work; cutters are driven to complete the cutting of the asparagus; the cut asparagus is clamped and conveyed through a secondary collection roller, and is sent to a conveyor belt; and the conveyor belt conveys the asparagus to an asparagus collecting box at the rear part so as to accomplish the selective harvesting of the green asparagus. The machining is unmanned, automatic in navigation and flexible in clamping and conveying, can perform self-walking according to the planned route, and selectively harvests the green asparagus met height requirements, therefore, labor force can be liberated, and economic benefits can be enhanced.

The invention discloses a vertical flexible clamping and conveying device for brassica campestris and a harvesting machine. The vertical flexible clamping and conveying device comprises a driving system, and the driving system is connected with two conveying devices which are arranged in parallel and adjacent to each other. Each conveying device comprises a driving chain wheel connected with the driving system, a driven chain wheel connected with the driving chain wheel through an annular chain and a flexible clamping belt fixedly installed on the periphery of the annular chain. Under driving of the driving system, the two conveying devices rotate oppositely, the middles of the flexible clamping belts of the two conveying devices make contact with each other, and a plurality of vertical clamping spaces for the brassica campestris are formed. The vertical flexible clamping and conveying device is small and exquisite in structure, flexible in operation, good in field adaptability and small in damage to brassica campestris stalks, and brassica campestris can be orderly clamped and conveyed.

The invention discloses a two-phase inhibition water mist drilling cooling device. The two-phase inhibition water mist drilling cooling device comprises a two-phase atomizing nozzle (1), a right-angle metal elbow (2), an extensible metal pipe (3), a high-pressure hose I (4), a pressure-measuring metal pipe I (5), a pressure-measuring metal pipe II (7), a high-pressure hose II (10), a proportioning mixer (11) and an inhibitor box (12), wherein the two-phase atomizing nozzle is connected with one end of the right-angle metal elbow and one end of the extensible metal pipe, the other end of the right-angle metal elbow is connected with the high-pressure hose I, the pressure-measuring metal pipe I is installed in the middle of the high-pressure hose I, a gas pressure gauge is installed on the pressure-measuring metal pipe I, the other end of the extensible metal pipe is connected with the high-pressure hose II through the pressure-measuring metal pipe II and a valve, and the proportioning mixer is installed in the middle of the high-pressure hose II and is connected with the inhibitor box. The two-phase inhibition water mist drilling cooling device can carry out rapid cooling on high-temperature drilled holes, is good in fire extinguishment effect and low in water consumption, can effectively inhibit reignition, and have the high field adaptability.

The invention relates to a field large-scale propagation method for harmonia axyridis. The method is characterized by comprising the following steps: (a) preparing pea aphids; (b) feeding egg laying adults; (c) collecting egg masses; (d) hatching eggs; (e) managing first-instar larvae; (f) inoculating second-instar larvae to fields; (g) carrying out field management on harmonia axyridis; and (h) carrying out field release of harmonia axyridis. The method has the advantages that harmonia axyridis is raised in the fields, so that the artificial culture cost, field transportation cost and field release cost are reduced, and the adaptability of released harmonia axyridis to field climate is improved.

The invention discloses an intelligent adjusting device for circulating water. The intelligent adjusting device comprises a valve body, a self-operated type temperature control part, an automatic pulse flow scouring part and a closing part. According to the intelligent adjusting device for the circulating water, under the premise of achieving the function of a circulating water system, the production cost is reduced, and the functions of descaling and closing are achieved; the water saving effect can be achieved through the intelligent adjusting device for the circulating water; the pulsating flow scouring part can be used for producing pulsating flows, and the growing rate of pipeline dirt can be decreased effectively; the flow closing function can be achieved through the closing part for being replaced on the scene conveniently.

The invention provides a radon thorium daughter fixed energy region proportion coefficient deduction algorithm. The algorithm comprises the following steps of acquiring a spectral line; performing smoothing and spectral drift correction on the spectral line; determining a spectral line energy region; training a support vector regression machine; and performing radon and thorium daughter deductionon the actually measured spectral line by utilizing the trained support vector regression machine. A radon thorium daughter deduction effect is a main factor affecting a minimum detection limit of a manual radioactive aerosol continuous monitor; and the support vector regression machine has high generalization ability, so that the algorithm has the advantages of global optimality, theory for smallsample statistics, good fitting characteristics for nonlinear curves and the like. The radon thorium daughters are deducted by adopting the support vector regression machine; the performance of the algorithm is superior to that of average value, empirical formula and neural network deduction methods adopted at present; and the deduction accuracy of the radon thorium daughters is improved, so thatthe minimum detection limit of the monitor is further reduced.

The invention relates to a field calibration method of engineering structure vibration acceleration monitoring equipment, which is used for calibrating a field sensor to be calibrated. The method comprises the following steps: determining the vertical weight m and impact angle range of a gravity pendulum based on the range and precision of the sensor to be calibrated, and planning the condition setting of a field calibration group; keeping the standard acceleration sensor and the sensor to be calibrated on site on the same high layer to realize synchronous measurement with the sensor to be calibrated; attracting the fixed support to a sensor installation plane through the magnet to be fixed, the gravity pendulum and the fixed support being connected through the movable pin shaft, combiningdifferent pin hole positions to obtain the proper swing arm length, and guaranteeing that the gravity pendulum can hammer the position of a sensor anti-base to be calibrated; acquiring a calibrationcoefficient of a to-be-calibrated sensor on site; and constructing a calibration parameter curve to complete calibration.