34results about How to "Improve the effect of epidemic prevention" patented technology

The present invention relates to a Huajiju Fangyi Qingyan tea with the functions of nourishing yin, moisturizing lung, clearing away heat and toxic material, relieving inflammation and raising immunity for preventing respiratory tract infection diseases with obvious therapeutic effect. Said Huaiju Fangyi Qingyan tea is made up by using the Chinese medicinal materials of Huaiqing chrysanthemum flower, lonicera flower, houttuynia, isatis root and ophiopogon tube and tea and rock candy through a certain preparation process.

The invention relates to a fabricated building pre-disinfection device and a control method, belongs to the technical field of building disinfection, and solves the problem that an air shower in the prior art cannot fully meet the requirements of public building cleaning and epidemic prevention. The fabricated building pre-disinfection device comprises a pre-inspection space, a front space and a rear space; the pre-inspection space comprises an infrared temperature measurement alarm unit; the front space comprises an overall control device, an ID identification and authentication unit, a release gate, a sole cleaning and disinfection unit and a sole drying unit; and the rear space comprises a plasma disinfection and sterilization device, a spray disinfection and sterilization device, an air shower system and an infrared sensor. The fabricated building pre-disinfection device and the control method achieve effective combination and control of public building cleaning and epidemic prevention.

The invention discloses a plant protection agent which can replace pesticide. The plant protection agent comprises, by mass, 92 to 96% of artemisinin, 1 to 3% of eucalyptus oil, 1 to 3% of an emulsifier, 1 to 3% of dried ginger, 0.3 to 0.8% of capsicum and 0.3 to 0.8% of active probiotics and enzymes. The plant protection agent is used for being sprayed to the leaf surface of a crop, produces an anti-oxidant substance, improves the plant immune function, promotes the healthy growth of the plant, solves the pest damage to the crop surface, saves manpower and financial resources, reduces the peasant planting cost, enhances crop stress resistance, improves the yield and quality, and increases the economic efficiency of peasants. The plant protection agent completely solves the pollution caused by agricultural pesticide to agricultural products, prevents the damage caused by pesticide residues to human beings, is free of the use of existing pesticides, protects ecological balance and provides important guarantee for organic planting.

The invention relates to the field of feed for egg laying poultry, in particular to poultry feed for producing poultry health-care eggs rich in natural astaxanthin and selenium and low in cholesteroland a preparation method of the poultry feed. According to the poultry feed for producing the poultry health-care eggs rich in natural astaxanthin and selenium and low in cholesterol, fermentation isperformed by EM (effective microorganisms), and auxiliary materials containing the following components are added to fermented feed: 10-200 mg / kg of natural astaxanthin, 0.1-10 g / kg of chitosan oligosaccharide, 1-20 mg / kg of vitamin A, 100-5000 mug / kg of vitamin E and 100-2000 mu g / kg of organic selenium. Poultry eggs fed with the feed contain 3-4 mg / 100 g of natural astaxanthin, 30-60 mu g / 100 gof organic selenium and 200-250 mg / 100 g of cholesterol. The shelf life is 1.5 times longer than that of common eggs in 6-7 weeks (at room temperature).

The invention provides safety cigarettes. In the manufacturing process of the safety cigarettes, nano selenium and short peptide collagen are added into cut tobacco, wherein the nano selenium accounts for 0.00025 to 0.003125 percent of the total weight of the cut tobacco; and the short peptide collagen accounts for 2 to 5 percent of the total weight of the cut tobacco. When the additive disclosed by the invention is added, the final finished cigarettes have the characteristics that: the toxicity of smoke is reduced obviously, and the average cell lethal dosage of the smoke of the cigarettes is increased obviously; unfavorable change induced by the smoke of the cigarettes in cells are prevented effectively; and the selenium content in the bodies of smokers is increased, the resistance to some diseases in human body is increased, and the histopathological, body immune function, body antioxidation function and the like of the body are all improved greatly. The safety cigarettes have the advantages that: the additive has obvious effects in reducing smoke toxicity and improving cigarette product safety; the preparation method of the additive is simple, convenient and practical, and the additive can be widely used by enterprises in cigarette industry.

The invention discloses an epidemic prevention method for pigeon breeding. The epidemic prevention method include the following steps of 1, artificial incubation, wherein an egg illuminating mode, an egg turning mode and an egg airing mode are adopted; 2, brooding, wherein nestling pigeons are put in an incubator, and the temperature of the incubator is adjusted; 3, vaccine injection, wherein the pigeons at different growth stages are subjected to vaccine injection of different varieties in different modes; 4, non-reactive feed feeding, wherein young pigeons and adult pigeons are fed; 5, washing modes, wherein bathing of different modes is carried out according to the change of four seasons. The epidemic prevention capacity of the pigeons is improved, and the death rate of the pigeons is reduced.

The invention relates to the field of breeding of live pigs, and specifically discloses epidemic disease prevention feed for live pigs and a preparation method thereof. The feed disclosed by the invention can be added to the feed for live pigs, the live pigs can quickly intake the components on the feed, the resistibility of the live pigs to diseases can be effectively enhanced before the live pigs suffer from the diseases, and the risk that the live pigs suffer from colibacillosis, swine plague, mycoplasmal pneumonia of swine, porcine reproductive and respiratory syndrome and other diseases can be greatly reduced The scheme can improve the resistibility of the live pigs to epidemic diseases.

The invention relates to a selenium enrichment biological Chinese medicine herb feed and a preparation method thereof. The selenium enrichment biological Chinese medicine herb feed is formed by activating, absorbing, smashing and pelletizing based on the following weight proportion: 3 parts of organic selenium, 1 part of biological Chinese herb medicine premix materials, 58 parts of corn, 24 parts of bean pulp, 2 parts of fish meal, 8 parts of wheat bran, 1.5 parts of hydrogen calcium, 2 parts of mountain flour, and 0.5 part of salt. The preparation method of the selenium enrichment biological Chinese medicine herb feed comprises the following steps: taking out prepared organic selenium for reservation, smashing the corn and the bean pulp, uniformly mixing the three parts of organic selenium and the one part of biological Chinese herb medicine premix materials, further uniformly adding the fish meal, the wheat bran, the hydrogen calcium, the mountain flour and the salt into the corn and the bean pulp which are smashed; using a biological feed dedicated squeezing palletizing drying machine to manufacture products, and the temperature while squeezing and drying is less than 70 degrees. The selenium enrichment biological Chinese medicine herb feed and the preparation method thereof can improve disease prevention ability of animals, lower production cost of farmers and are applicable to feed production enterprises in different scales.

The invention discloses a household portable epidemic prevention ventilator which specifically comprises a humidifying box body, a ventilator body, an air suction mask and a water tank, wherein a connecting part is arranged on one side of the humidifying box body; the ventilator body is installed on the side, away from the humidifying box body, of the connecting part; a control panel is installedat one end of the ventilator body; a turbine motor is mounted in the middle of the interior of the ventilator body; a cover is hinged to the side, close to the connecting part, of the top end of the humidifying box body; and a rubber sealing ring is mounted at the edge of the bottom end of the cover. According to the household portable epidemic prevention ventilator, through the arrangement of a temperature sensor, a heating sheet and a conducting sheet, a temperature control loop composed of the control panel, a connector groove, the temperature sensor, the heating piece and the heat conducting piece can control the temperature in a water tank in real time, the temperature sensor is designed to be internally arranged, and therefore water temperature detection is more accurate, and water temperature control is more accurate.

The sterilizing and deodorizing pest killer includes closed casing; igniter inside the casing with igniting bolt led out of the casing via small through hole; and sterilizing and deodorizing pesticide powder filled around the igniter. The cylindrical closed casing is made of card board of 1-2 mm thickness. The sterilizing and deodorizing pesticide powder is mixture comprising organic chloride in 15-20 wt%, zinc aliphate in 30-50 wt% and decamethrin in 30-50 wt%. The igniter is a small detonator. The present invention has sterilizing, deodorizing and pesticidal functions and may be thrown manually or mechanically to where man can not reach for sterilizing, deodorizing and killing mosquito, fry and microbe.

The invention provides an epidemic prevention method suitable for rural free-range pigs. The method comprises the following step of establishing the immune antibody decrease and increase rule of the hog cholera of the rural free-range pigs, a foot-and-mouth disease and a highly pathogenic pig blue ear disease, and an immune procedure. A ''CSF, FMD and HPPRRS three-vaccine-synchronization two-pointcommon immune technology'' is adopted for the rural free-range pigs, which accords with a rural traffic geographical condition and a current rural pig breeding situation, a current pig epidemic prevention situation is changed and rural free-range pig immune pattern conversion is accelerated. A set of new CSF, FMD and HPPRRS prevention and control mode suitable for a basic level is provided so asto reduce the labor intensity of basic-level epidemic prevention personnel, improve work efficiency and increase immune quality. Through implementing programmed immunity, village-level epidemic prevention officers have a large time control right so that animal epidemic prevention work can be organically combined with agricultural production, and the operability of basic-level animal epidemic prevention work can be improved, and an epidemic prevention effect is comprehensively improved.

The invention discloses a Chinese medicinal preparation for treating psoriasis which comprises the following raw materials (by weight portion): dried rehmannia root 4-6%, red peony root 4-6%, arctium fruit 4-6%, herba schizonepetae 4-6%, Chinese dittany bark 4-6%, rhizome smilacis glabrae 6-10%, spatholobus stem 4-6%, black-tail snake 2-4%, honey-suckle stem 4-6%, honeysuckle flower 5-8%, ledebouriella root 4-6%, capsule of weeping forsythia 4-6%, root bark of tree peony 4-6%, radix isatidis 4-6%, flavescent sophora root 2-4%, sophora flower-bud 4-6%, radix salvia miltiorrhiza 4-6%, and licorice root 2-4%, subprostrate sophora root 2-4% and alkanna tinctoria 4-6%.

The invention discloses a medicine microcapsule slow-release filtering material composition for an epidemic prevention functional type gauze mask, and belongs to the technical field of antibacterial and antivirus gauze masks. The formula medicine components are attached to the surface of a nonwoven material to prepare a medicine microcapsule filtering material layer, so that the gauze mask has active epidemic prevention function for resisting pathogenic microorganisms, and can improve the respiratory system immunity of users wearing the gauze mask in different degrees. The medicine filtering material layer comprises the composition of following medicine raw materials in parts by weight of 1-20 parts of atractylis oil, 1-30 parts of palchouli oil, 1-40 parts of radix angelicae oil, 1-20 parts of fortune eupatorium herb oil, 1-10 parts of oleum cinnamomi, 1-10 parts of camphor oil, 1-25 parts of clove oil, 1-30 parts of folium eucalypti oil, 1-10 parts of peppermint oil, 1-10 parts of a2000ppm nanosilver solution and 8-40 parts of octenyl succinic anhydride modified starch. The medicine raw materials are combined to prepare medicine microcapsules and then are adhered to the surfacesof nonwovens to prepare the medicine filtering material layer. The medicine microcapsule slow-release filtering material layer for the epidemic prevention functional type gauze mask has high adsorption and pathogenic microorganism killing properties, and besides, the hygroscopicity and the air permeability are good.

The invention discloses a feed conversion rate measuring device, comprising a feed adding system, a feeding system, an electronic tag system and an automatic weighing system. The feed adding system comprises an adding line, a barrel, an index disc, an upper dropping passage and a lower dropping passage; the barrel is supported in a barrel holder; an upper opening of the barrel is connected with the adding line; a lower opening of the barrel is provided with the index disc; the bottom of the barrel is divided into a plurality of passages equal in size through the index disc; the passages are connected corresponding with an upper opening of the upper dropping passage; a lower opening of the upper dropping passage is connected with an upper opening of the lower dropping passage; a box is adapted to a lower opening of the lower dropping passage; a dropping guide bar component is mounted inside the lower dropping passage. The problems are solved that, for instance, existing equipment uses large floor area and has poor watertightness, feeding height is unadjustable, the existing equipment has complex structure and high cost, and chicken consumption is inaccurately weighed. The feed conversion rate measuring device has the advantages of good operating simplicity, low cost, and higher precision of feed weighing.

The invention discloses a non-inductive temperature measurement and image code checking device and method, and the method comprises the steps: setting a non-inductive temperature measurement and image code checking system at an entrance / exit of a collective unit or a residential quarter, and carrying out the temperature measurement and personal information collection of the entrance / exit population; calling health codes and itinerary code data in the associated health code system and the personal itinerary code system through the collected personal information, so that the health condition of the entrance / exit population is judged according to the measured body temperature, health codes and / or itinerary codes, and whether the entrance / exit population is allowed to access is judged. According to the invention, rapid inspection and detection can be realized, the inspection efficiency and accuracy are improved, the problems of missed inspection, population aggregation and the like are avoided, and the epidemic prevention effect and safety are improved.

The invention discloses an epidemic prevention type sheepfold for goat breeding, and relates to the field of goat breeding. The epidemic prevention type sheepfold comprises a rectangular frame, a supporting bottom plate is uniformly and rotatably connected between the left side wall and the right side wall of the rectangular frame, a mounting cavity is formed in each of the left side and the right side of the rectangular frame, a first adjusting mechanism used for adjusting the supporting bottom plate is fixedly connected into each mounting cavity, a cleaning mechanism is installed between the front side wall and the rear side wall of the rectangular frame, and the lower side of the rectangular frame is fixedly connected with a collecting box. The inclination angle of the supporting bottom plate can be adjusted through the first adjusting mechanism, so that the supporting bottom plate can be overturned to discharge excrement on the surface of the supporting bottom plate, and the excrement on the upper surface of the supporting bottom plate can be preliminarily cleaned; the cleaning mechanism can clean the surface of the supporting bottom plate again through a brush roller after the supporting bottom plate is turned over, the cleaning effect is better, the condition that excrement in the sheepfold gathers and breeds bacteria is avoided, and the epidemic prevention effect of the sheepfold is greatly improved.

The invention discloses a public transport type escalator with a disinfection function. A storage container is arranged on an upper bed or a lower bed of a truss, and the storage container is filled with a hand-washing-free disinfectant; the storage container comprises two sets of liquid outlets and liquid inlets, and each set of liquid outlets and liquid inlets are connected with the two ends of the same conveying pipe; the conveying pipe is provided with a plurality of atomizing devices, and the conveying pipe is arranged in a groove; human body infrared sensors with the number corresponding to that of the atomizing devices are arranged in the groove in parallel; a plurality of notches are formed in the positions, corresponding to the sensing range of the human body infrared sensors and the spraying openings of the atomizing devices, of a whole handrail belt; and the human body infrared sensors sense human hands through the notches, and then the atomizing devices are started to atomize the hand-washing-free disinfectant to be sprayed to the human hands. The public transport type escalator is high in intelligent degree, the hands of pedestrians are disinfected by utilizing the time of the pedestrians taking the escalator, meanwhile, the handrail belt can be disinfected, so that the occurrence of infection is reduced, and the epidemic prevention effect of a personnel-intensive place is greatly improved.

The invention discloses a meat material conversion rate measuring device, comprising a feed adding system, a feeding system, an electronic label system and an automatic weighing system; the feed adding system includes a feeding line, a barrel, an indexing plate, a loading and unloading system material channel and falling material channel; the barrel is supported in the barrel frame, the upper port of the barrel is connected with the feeding line, and the lower port of the barrel is provided with an indexing plate, and the indexing plate moves the barrel The bottom is divided into a plurality of channels of equal size; the channels are correspondingly connected with the upper ports of the upper blanking channels, the lower ports of the upper blanking channels are connected with the upper ports of the lower blanking channels, and the lower ports of the lower blanking channels are connected to A material box, and a material blanking guide rod assembly is installed inside the material falling channel. The invention solves the problems of large floor space, poor waterproofness, inability to adjust the height of the feeding position, complex structure, high cost, inaccurate weighing of chicken consumables, etc. in the existing equipment, and has the advantages of simple operation, low cost, and feed weighing accuracy. higher effect.

The invention relates to a method for early warning of an emergency public health event, in particular to a method for emergency public health event early warning. Whether a user is likely to touch anepidemic situation diagnosis case or not is judged through a historical track of a mobile phone of a mobile communication network diagnosis patient, and the method is wide in coverage range and poorin accuracy. The invention provides the method for early warning of the emergency public health event, which comprises the following steps that: a base station acquires information of a first terminaland a nearby second terminal and sends the information to a public emergency center through a core network, wherein a user of the first terminal is a confirmed infectious disease case; and meanwhile,the camera acquires pictures of users of the first terminal and the second terminal and sends the pictures to the public emergency center through the video server, and the public emergency center sends a warning message to the second terminal after analyzing the pictures. By using the method provided by the invention, the intimate contact person of the public health event diagnosis patient can beaccurately found, and the social public health epidemic prevention ability and level are improved.

The invention relates to a temperature measurement method, device and system based on infrared imaging and a medium. The method comprises the steps of obtaining a target image of a target person when the target person is detected to enter a detection range; inputting the target image into a trained network model to obtain result information, the result information being used for representing whether the target image contains a complete forehead image, the complete forehead image being a part of the target image, and the complete forehead image being used for representing that the forehead of the target person is not shielded; when the target image does not contain the complete forehead image, outputting first prompt information, and the first prompt information being used for prompting the target person to correct the crown; obtaining a correct image, determining a complete forehead image based on the correct image, and the correct image being a thermal infrared image containing the complete forehead image; and determining temperature information based on the complete forehead image, wherein the temperature information is used for representing the forehead surface temperature of the target person. According to the invention, the effect of improving the temperature measurement accuracy is achieved, and then the epidemic prevention effect is improved.

The invention relates to the technical field of live pig breeding, and particularly discloses a positive pressure ventilation epidemic prevention type intelligent pig breeding system which comprises a plurality of independent breeding rooms, a breeding area with a drying area, a grit area and a negative pressure pollution discharge area, a positive pressure system, a negative pressure system, an emergency system, a feed feeding system and a controller. The invention further discloses a positive pressure ventilation epidemic prevention type intelligent pig raising control method. According to the method, the pigs are distributed into the independent closed breeding rooms for breeding, so that the pigs are isolated from one another, and when an epidemic situation occurs in a certain breeding room, the pigs can be rapidly isolated, and the loss is reduced; a drying area, a grit area and a negative pressure pollution discharge area are arranged in the breeding area, dryness and sanitation of the breeding environment can be guaranteed, breeding of bacteria can be prevented, air in the breeding room can circularly flow through a positive pressure system, a negative pressure system and an emergency system, the feeding amount and the feeding temperature of water feed can be controlled through a feed feeding system, and the breeding efficiency is improved. Digestion and absorption are facilitated, and feeding management is facilitated.

The invention discloses a broiler cough monitoring method based on audio technology. A pickup located in a sound collecting room collects the vocal information in real time and transmits the information to an audio storage unit for storage through a data line. The PC reads the audio data from the storage unit at regular intervals and preprocesses the read audio data. By artificially selecting thetime period of the chicken cough state in the audio frequency, the broiler cough sound data in the time period is extracted. And the decision model is trained by SVM classifier. When the broiler voiceis recognized as cough after model classification and reaches the warning value set by the program, the PC will issue an abnormal warning to the broiler. The invention realizes automatic identification and alarm of respiratory diseases of broiler chickens through analyzing cough sound of broiler chickens, provides an automatic judgment method for early detection and treatment of respiratory diseases of broiler chickens, and realizes automatic breeding of broiler chickens in a real sense.

The invention belongs to the technical field of epidemic prevention detection, and particularly relates to an automatic blood test slide replacing device.The automatic blood test slide replacing device comprises a slide pushing mechanism, a slide autorotation detection mechanism and a slide sorting mechanism, and the left end of the slide pushing mechanism is connected with the right end of the slide autorotation detection mechanism; the slide sorting mechanism is mounted on the left side of the slide autorotation detection mechanism, an analyzer is arranged above the slide autorotation detection mechanism, and the slide sorting mechanism comprises a first sorting track, a first sorting assembly, a second sorting track and a second sorting assembly. Blood samples in a large-scale epidemic disease outbreak area are rapidly and preliminarily screened, so that the detection precision and the detection speed are improved, and the epidemic prevention capability of the area is greatly improved.

The invention relates to selenium-rich biological feed and a preparation method thereof. The preparation method comprises the following steps: 1) preparation of organic selenium; 2) preparation of a biological Chinese herbal medicine premix; 3) crushing; 4) uniform mixing: uniformly mixing 1-5 parts by weight of the organic selenium, 1-3 parts by weight of the biological Chinese herbal medicine premix, 50-65 parts by weight of crushed corn, 16-30 parts by weight of soybean meal, 3-18 parts by weight of wheat bran, 1-3 parts by weight of hydrogen and calcium, 0.3-1 part by weight of table salt,1-3 parts by weight of vegetable oil and 3-5 parts by weight of egg yolk powder; and 5) preparation: performing extrusion and granulation on the uniformly mixed material to obtain the selenium-rich biological feed. The selenium-rich biological feed solves the food safety problem in China at present and can improve the epidemic prevention capacity and growth speed of animals, farmers can produce high-end selenium-rich and antibiotic-free meat, eggs and milk by using the selenium-rich biological feed under the conditions that original breeding modes are not changed and the labor intensity and the breeding cost are not increased, and incomes are increased multiply.

An integrated helmet includes: a helmet body, defining a wearing space, a flip cover coupled pivotally to the helmet body; a pair of glasses, configured on the helmet body and positioned relatively inside the flip cover, and generating a virtual reality image; and a first filter device, configured inside the helmet body. The integrated helmet 1 is provided with the flip cover to protect the smart glasses inside the flip cover, and can generate interactive VR images; the helmet body is provided with the first filter device to filter suspended particles in the air, such as viruses, dust, impurities, etc., achieving the improved epidemic prevention.

The invention relates to the technical field of riding processing, and discloses a riding processing method and system based on wearable equipment and a storage medium, which cover epidemic prevention and control and arrival reminding functions, and the method comprises the following steps: the wearable equipment receives binding information triggered by a passenger terminal, establishes a binding relationship with the passenger terminal according to the binding information, each passenger uniquely corresponds to one set of wearable equipment; after the binding relationship is successfully bound and authorization confirmation of the passenger is received, the wearable equipment enters an epidemic prevention and control activated state; after the wearable equipment enters the epidemic prevention and control activation state, the wearable equipment searches other target wearable equipment in the epidemic prevention and control activation state in a preset recognition range and records the target wearable equipment to obtain recorded information, and the recorded information comprises device identification, recording time and the distance between the wearable equipment and the target wearable equipment; and when the wearable equipment is in the recovery device, the wearable equipment backs up the recorded information.

The invention discloses a marine transportation logistics monitoring device and method.The marine transportation logistics monitoring device comprises a supporting column, a base is installed at the bottom of the supporting column, a lifting column is inserted into the upper portion of the supporting column, a toothed plate is installed on the side wall of the lifting column, a lifting control structure is arranged on one side of the toothed plate, and a transverse plate frame is installed at the upper end of the lifting column; a rotating seat is rotatably mounted on the bottom face of the middle of the transverse plate frame through a fixing plate, a mounting box is mounted below the rotating seat, and a monitoring head is arranged in the mounting box. A lifting control structure is mounted on the supporting column, transition of the transverse plate frame is conveniently adjusted, and therefore the height of the monitoring head can meet the requirements of containers of different sizes; the rotating seat is rotationally arranged on the mounting box, monitoring of the monitoring head is adjusted conveniently, meanwhile, the spray head is arranged below the mounting box, disinfection is conducted conveniently when the container passes through the position below the monitoring head, and the epidemic prevention effect is improved.

The invention belongs to the technical field of broiler feeding equipment, and particularly relates to an automatic water supplementing device special for broiler feeding and a using method thereof.The automatic water supplementing device comprises two supports arranged in parallel, the two supports are both slidably connected with sliding sleeves, and the sliding sleeves are fixedly connected with the supports through fixing bolts; the sliding sleeve is fixedly connected with a first mounting block through a connecting rod, a water supplementing pipe is arranged on the first mounting block, second mounting blocks are arranged on the upper sides of the two ends of the water supplementing pipe, and the second mounting blocks are fixedly connected with the first mounting block through bolt assemblies. Through the water supplementing pipe, the branch pipe, the connecting pipe, the splitter plate, the water pump and the water storage tank, automatic water supplementing into the broiler feeding trough is facilitated, intelligent control over the water supplementing amount is facilitated through the electromagnetic flowmeter, the labor intensity of workers is reduced, timed water supplementing and timely water supplementing are facilitated through the timer, and the broiler feeding efficiency is improved.

The present invention is a home-school linkage type new crown virus warning protection method. When students enter the park, they first scan the two-dimensional code on the display card with a two-dimensional code scanning gun to read the student's code, and then use a thermometer to measure the temperature. The processing unit sends the fields including temperature, student display card code and temperature measurement time to the remote server for recording. If the temperature exceeds the normal body temperature, the remote server will send a signal Y show To all the display boards in the linkage institution of this family, the display boards are yellow, and all students of this family are not allowed to enter the campus at this time. It can conveniently display the color of whether students can enter the campus, which greatly facilitates campus management.