559 results about "Stored grain" patented technology

The invention relates to a method for detecting the quantity of stored grains in a granary based on a pressure sensor, belonging to the technical field of detection. The detection method in the invention can calculate pressure values of the bottom surface and the side surfaces of the granary by adopting the output values of the pressure sensor according to the arrangement modes of pressure sensors of different types, and calculates the quantity of the stored grains in the granary based on an established model. The detection method in the invention has high measurement precision, strong practicability and low detection cost, can meet the actual requirements on detecting the quantity and distribution of the stored grains in nationwide granaries on line in real time, provides a technical means for accurately mastering the quantity of the stored grains in China in real time and gives services to guaranteeing the grain safety of China.

The invention discloses circular inflation modified atmosphere grain storage device and method using the device. The device comprises a nitrogen inflation system, a nitrogen preparation circulation system, a grain barn system and an automatic control system. The nitrogen inflation system comprises a nitrogen inflation/preparation unit. The circulation system comprises a nitrogen preparation circulation unit and a circulation pipeline. The grain barn system comprises a barn body, a grain pile, a grain face film gasbag disposed above the grain pile, and a grain storage ventilation pipeline, a nitrogen inflation pipeline, a circular nitrogen inflation pipeline and a gas outlet pipe disposed in the grain pile. The automatic control system comprises a central processor, a nitrogen inflation/preparation unit control module, a nitrogen preparation circulation unit control module, a pressure sensor, an oxygen concentration sensor, and a grain pile temperature/humidity sensor. By cooperative operation of the nitrogen inflation system and the circulation system, the device and the method greatly improve working efficiency, save energy consumption, guarantee grain storage quality, and achieve significant pest killing effect.

The invention relates to a grain storage quantity detection method for horizontal warehouses and shallow silos. The grain storage quantity detection method comprises the following steps of: firstly selecting specific pressure sensors to lay a grain warehouse pressure sensor detection network; distributing the pressure sensors along the side wall of the grain warehouse in the mode that all the pressure sensors are evenly-spaced laid at d meter distance from the side wall; and determining whether a grain warehouse is calibrated or not so as to obtain a calibration parameter and a grain warehouse weight prediction model, spreading the top surface of a grain pile in the grain warehouse after the grain warehouse is fully filled with the grain, detecting the average output valve of the pressure sensor at the bottom of the grain warehouse, and detecting the grain storage quantity of the grain warehouse according to an actually-tested bottom surface area of the grain warehouse, a bottom surface area of the calibrated grain warehouse and calibrated parameters by using a model so as to obtain an estimated value of the weight of the grain warehouse. According to the grain storage quantity detection method provided by the invention, the pressure sensors are required to be arranged on the bottom surface of the grain warehouse, and a compensating item of a side grain warehouse friction action is added into a bottom surface pressure estimating model in order to avoid using the side pressure sensor and accurately obtain the estimated value of the pressure of the bottom surface of the grain warehouse, so that the quantity of the sensors is obviously reduced, and the device detection cost and the installation and maintenance cost are reduced.

The smart pet feeder includes a housing, and a grain storage component, a driving component and a rotating component, arranged therefor in the upper part, the middle part and the lower part of the housing; a rotating component is arranged in the housing, and the rotating component has a supporting column, the upper part, of it is provided with a wheel, the lower part of it is provided with a driving gear, the bottom end of it is provided with a cam; the upper part is extended into the grain storage component, and the wheel is contained in the grain storage component; the driving gear is rotatably connected with the driving component, the cam is connected with the throwing component.

The invention relates to a granary, a stored grain weight detection system and method and a sensor arrangement method, and provides the granary stored grain weight detection method based on the arrangement of two loops of sensors arranged on the bottom. The core technology comprises arrangement of inner and outer two loops of bottom pressure sensors, grain pile weight detection model based on bottom pressure intensity and side pressure intensity mean value estimation, and system calibration and modeling method and the like. The method has the advantages of high detection precision, low requirement for the performance of sensors, high applicability, simple device, convenient use and maintenance, and facilitating to carry out remote online granary quantity detection and granary condition monitoring and the like, and the demand for carrying out remote online quantity detection of grains stored in commonly-used granaries can be met. Since the detection method can be suitable for quantity detection of stored grains in a plurality of granary structures, the method has huge application value, and provides a new technological means for guaranteeing nation grain quantity safety.

The invention discloses a method for controlling grain pest by using essential oil. In the method, the essential oil and kieselguhr are mixed and used for controlling the grain pest. Compared with other methods for controlling the grain pest by using the essential oil, the method has the advantages that the kieselguhr is used as a carrier, and the volatilization of the essential oil can be delayed, so that the effects of the essential oil can be improved and efficiency duration can be prolonged; and by the method for controlling the grain pest by using the essential oil, the using amount of the essential oil can be greatly reduced and the pest killing effect of the essential oil is not influenced, and the pesticide using cost can be effectively reduced. The method has very wide application prospect in the agricultural technical fields of controlling the grain pest and the like.

The invention relates to a method and a device for detecting stored-grain insects. A near infrared super-spectral imaging device for automatically acquiring grain screen underflows consists of five parts including a light box, a lighting unit, a displacement unit, a spectral imaging unit and a computer, wherein the spectral imaging unit comprises an indium-gallium-arsenic near infrared camera, an imaging spectrometer and a near infrared lens. The method for detecting stored-grain insects comprises the following steps of extracting the wavelength of an optimal spectrum synchronously containing data cube of both of live insect and dead insect, and determining the number of the live insects in stored-grain insects and the coordinate information of each live insect in the image; extracting sub-area of the image in which the live insects in the stored-grain insects are located, determining species information of the live insects in the stored-grain insects by identification software according to the near infrared spectrum characteristics of the live insects in the stored-grain insects, and realizing the automatic detection of the stored-grain insects.

The invention relates to a grain bin stored-grain quantity detection method based on a structure self-adapting detection model. Two circles of pressure sensors are arranged on the bottom face of a grain bin and output values of the sensors are detected and according to the detection model (as is shown in the specification), the grain bin stored-grain weight estimation W<^> is calculated. The method has the characteristics of being high in detection precision and adaptive to stored-grain quantity detection of a plurality of kinds of grain bin structure types and the like.

The invention provides a method and device for detecting and identifying stored grain insects. The method comprises the steps of inputting an original stored grain insect image into an artificial intelligence analysis model to perform location positioning and category judgment on insects, wherein the artificial intelligence analysis model is a convolutional neural network which is trained and verified according to a data set formed by the stored grain insect image; and labeling the insect location and category on the original stored grain insect image according to a location positioning and category judgment result. According to the invention, a model capable of correctly positioning and identifying various stored grain insects is trained according to a deep leaning based target detectionalgorithm and collected stored grain insect data, thereby avoiding the drawbacks of poor robustness and generalization of manual design features, and improving the accuracy and efficiency of detectionand identification.

The invention discloses a grain pile dewing early-warning, prevention and control system and method based on temperature field and humidity field coupling. The early-warning, prevention and control system comprises a temperature measurement senor array, an analyzing and early-warning device and a ventilation control device which are sequentially and electrically connected. The temperature measurement senor array comprises a plurality of regularly arranged temperature sensors, the temperature sensors are arranged at different positions in a grain pile, and each temperature sensor is located at an actual measurement point in the grain pile. The analyzing and early-warning device comprises a temperature field building module, a humidity field building module and a coupling module, and the temperature field building module is sequentially and electrically connected with the humidity field building module and the coupling module. The early-warning, prevention and control system and method can predict the time when dewing may occur in the grain pile in several days or tens of days and the positions where dewing may occur in the grain pile in several days or tens of days, thereby avoiding mildew losses, lowering expenditure and guaranteeing the quantity and quality safety of stored grain.

The invention discloses a method for detecting insect pests in stored grains by means of the terahertz imaging technology. The method comprises the steps that 1, stored grains not damaged by insect pest eggs or larvae are collected as standard grains, and terahertz spectral imaging detection is carried out on the standard grains; 2, stored grain samples to be detected are collected, and terahertz spectral imaging detection is carried out on the stored grain samples; 3, stored standard grain terahertz images obtained in the step 1 and to-be-detected stored grain sample terahertz images obtained in the step 2 are compared and analyzed, and whether the stored grain samples to be detected have insect pest eggs or larvae or not is determined through analysis. The method has the advantages of being easy, convenient and rapid to implement, efficient, high in detection accuracy and the like, can rapidly and accurately detect insect pest eggs or larvae in the stored grains in the early insect pest period, has the important practical significance in ensuring stored grain safety and quality and reducing economic losses, and has good market application prospects.

The invention provides an anti-mildew bacillus strain, namely Bacillus subtilis LPL-NM45 of which the collection number is CGMCC No.7762. The invention also provides a method for extracting an antimicrobial product of the Bacillus subtilis LPL-NM45. The Bacillus subtilis LPL-NM45 and the antimicrobial product thereof have strong inhibiting effect on growth of mildew and germination of spores in grain storage (especially corn storage). In case of the identical spraying dosage, the Bacillus subtilis LPL-NM45 and the antimicrobial product thereof can more effectively inhibit the growth of mildew in the storage process of high-water-content corns in comparison with the conventional chemical preservative used in grains, and guarantee the safety of the grains, thus having favorable prospects of being used as mildew inhibitors for grains.

In one embodiment, the invention is directed toward a networked grain aeration control system. For example, the system can provide centralized monitoring of the aeration of a number of grain storage facilities, thereby improving the management of stored grain. The networked grain aeration control system can allow the custodian of the system to offer an aeration service. Farmers, or other individuals, cooperatives, or companies can purchase the aeration service at a cost proportionate to the amount of stored grain to be aerated and the duration of storage. In this manner, the purchaser of the aeration service can avoid relatively high fixed costs that can be associated with various aeration hardware.

A grains yield estimating system based on single-chip microprocessor and disc storage is composed of speed sensor for measuring the speed of harvester, impulsive yield sensor for real-time measuring the yield of grains, capacitor-type humidity sensor for measuring the humidity of grains, harvesting branch state sensor, GPS module, disc storage module and master controller.

Disclosed is a grain storing mechanism venting intelligent management control system and the method for control thereof. The system comprises a computer for storing, PLC storehouse roof axial flown fan control system, PLC centrifugal flown fan control system which are connected on the RS232-RS422 converter; the computer is connected to the grain situation detecting system; the PLC storehouse roof axial flown fan control system is connected with storehouse roof axial flown fan and the LC centrifugal flown fan control system is connected with storehouse ground centrifugal flow fan. The function of the management control software is realizing automatic control of the venting process of the storehouse and recording the grain situation changes.

The invention provides a combine harvester. A feeding port is formed in the middle of a frame, so that a connecting port between a crop conveying structure communicated with the feeding port and a header is located at the position, close to the middle, of the header, and crops are fed into the connecting port from the two sides of the header more evenly; and meanwhile, a scattering structure is arranged close to a grain storage assembly, the crops enter from the middle of the front end of the harvester and are partially scattered out from the middle of the tail end of the harvester through the n-shaped threshing direction of a double-helix threshing conveying system, and the stability of the gravity center of the combine harvester is guaranteed. A cleaning transmission system is arranged at the outer side of a threshing system, centralized transmission is achieved, and installation and debug are convenient. The whole harvester is compact in structure, small in occupied space, high in maneuverability and remarkable in operation efficiency, and the gravity center is always kept stable in the empty operation and harvesting operation process.

The invention discloses a stored grain temperature adjusting method, which comprises the following steps of: A, closing all windows and ventilation openings of a warehouse to make the warehouse in a sealed state; and B, starting an axial flow fan on the top of the warehouse to make the whole warehouse and grain piles form negative pressure, discharging the accumulated temperature of the warehouse space part, and making the cold air of the cold cores of the grain piles move to the upper layers the grain piles so as to reduce the grain temperature of the upper layers of the grain piles and the temperature in the warehouse and meet the temperature requirement of temperature-controlled stored grain. The method also comprises a step of compensating cold quantity by using a refrigerator, wherein the axial flow fan on the top of the warehouse is started in the step B, when the accumulated temperature of the warehouse space and the grain temperature of the upper layers of the grain piles is reduced by not more than 28 DEG C, the ventilation openings of a ground cage ventilation pipe network of the warehouse are opened and linked with the refrigerator, and the refrigerator is started for refrigeration, so the stored grain temperature can be reduced and the requirement of standard low-temperature grain storage is met. Because a sealed system is adopted and the negative pressure is formed in the warehouse and the grain piles, the radiating speed of the granary is improved, the cold sources of the cold cores of the grain piles are effectively utilized, the energy is saved and the operating cost is reduced.

The invention discloses an ABC strategy method suitable for stored grain digital supervision. The method comprises the steps of 1, determining a sampling range and a temperature measuring point of stored grain storage, and determining a temperature measuring sensor position in the sampling range and a grain temperature tested by a temperature measuring sensor; 2, building a fitting function F(i,j,k,d) of the temperature measuring sensor position and the grain temperature, wherein F(i,j,k,d)=A(i,j,k,d)j2+B(i,j,k,d)j+C(i,j,k,d); 3, calculating a deviation of the fitting function in the spatial position of the temperature measuring sensor and coefficients A(i,j,k,d), B(i,j,k,d) and C(i,j,k,d) of the fitting function when the deviation reaches a minimum value, and calculating a parameter D(i,j,k,d)and a parameter F(i,j,k,d); 4, judging and analyzing the coefficients and the parameters; and 5, summarizing abnormal conditions occurring in the step 4, calculating an abnormal proportion of a certain section in a granary and an abnormal proportion of the whole granary, and performing output.

Application of melaleuca ahemifolia essential oil to control of stored-grain insect pests belongs to the technical field of biotechnology. According to the grain storage and production realities, the stored-grain insect pests (tribolium confusum and sitophilus zeamais) are repelled, touched out and fumigated. Compared with three essential oil single items and the mixing formula thereof, which are reported in the disclosed patent 201510340845.X, the melaleuca ahemifolia essential oil has a better control effect on the stored-grain insect pests (tribolium confusum and sitophilus zeamais), particularly has a remarkable fumigating insecticidal function, and is long in lasting period and low in probability of resistance to drugs. The melaleuca ahemifolia essential oil is rich in raw material source, low in cost and environmentally friendly, has the potential of being developed into a stored-grain insect pest fumigating agent, and has a very wide application prospect in controlling red-grain insect pests.

The invention provides an automatic monitoring method of grain storage quantity change based on computer vision, belonging to the technical field of grain storage detection. The invention firstly collects the grain surface image at the grain mouth; The grain surface image comprises a reference line above the grain ration surface, wherein the reference line is a grain loading line or a marking line; The whole height of the grain surface is calculated by processing the grain surface image, and is compared with the whole height of the grain surface calculated at a predetermined time or at a previous time; If the overall height of the grain surface drops, the amount of stored grain in the warehouse is judged to be reduced. As oppose to that prior art which requires the continuous detection ofthe amount of grain in the entire granary, The invention only needs to detect the grain surface information at the grain mouth, and compares the calculated whole grain surface height with the preset primary or previous calculation result, so as to judge whether the grain storage quantity in the granary is changed, and has the advantages of fast detection speed and low energy consumption.

The invention belongs to the technical field of grain storage, and in particular relates to an underground bionic honeycomb granary and a grain storage method. The granary is designed through the reference and absorption of the original ecological honeycomb structure principle and comprises a granary body positioned below the ground surface, wherein the granary body consists of a plurality of rows of honeycomb silos among which gaps are formed in the transverse direction; each row of honeycomb silo comprises a plurality of silos which are tightly arranged along the longitudinal direction in turn; a silo upper opening is formed at the upper end of each silo and is provided with a closed cover; each silo comprises a reinforced concrete layer or a brick-concrete masonry layer; a polyethylenefilm layer is arranged in each silo; a spodosol layer is backfilled in an outer wall gap of each silo; and soil or sandstone or a soil and sandstone mixed material is backfilled among the spodosol layers. Grain is stored in the polyethylene film layers and isolated from outside, so that four ecological factors such as moisture, temperature, oxygen and light rays which can cause the deterioration of the stored grain are inhibited from the source, the stored grain is free from insects, mildew, rat damage, fires, floods and earthquakes, and the shelf life of the stored grain is prolonged by morethan one time.