41 results about "Respiratory zone" patented technology

The invention discloses a dedusting system of a whole factory building, which comprises an air funnel, an air handling unit, a top air-return opening, an air supply pipeline and an air-return pipeline, wherein the air handling unit is arranged outside a workshop, the air funnel is arranged at the lower part of the inner side of the workshop, one end of the air supply pipeline is connected with the air funnel, and the other end of the air supply pipeline is connected with the air handling unit through the air supply pipeline; the top air-return opening is arranged at the top inside the workshop, one end of the air-return pipeline is connected with the top air-return opening and the other end of the air-return pipeline is connected with the air handling unit. The air supply direction of the air funnel is adjusted to change the air distribution of returned air, welding fume with higher temperature drifts upwards under the action of hot buoyancy, the fume further drifts upwards by the push of air sent out from the air funnel and does not move transversely, thereby the welding fume can be avoided from passing through the respiratory zone of the human body; and the fume and harmful gases are sucked into the air handling unit through the air-return pipeline under the suction action of the air-return opening at the top of the workshop and can not be directly removed outdoors, thereby the secondary pollution can not be caused.

The invention discloses a multipurpose combined mask with a filter disc easy to replace. The multipurpose combined mask can effectively replace a disposable mask and a mask with a single function. With the adoption of a zipper and a pocket, the pocket in a respiratory region is pulled open through the zipper according to the demand, different filter discs are put in the pocket and can meet rapid conversion of an N type mask, an R type mask and a P type mask, the filter discs are disposable independent commercial products in different specifications, the mask can have mosquito prevention, mist prevention, dust prevention, virus prevention and thermal insulation functions by means of the used different filter discs, a main mask body can be cleaned and can be repeatedly used, a replaceable nose bridge pressing bar which is easy to dismount is added, and the attaching, sealing and comfort properties of the mask with a face are improved. During use, all that is required is that a user pulls open the zipper, puts the filter disc in the pocket, zips up the zipper, puts on ear cuffs and shapes the nose bridge pressing bar.

The invention provides a body temperature and respiration data acquisition system, method and device for people wearing masks. The system comprises an image acquisition subsystem which employs a bimodal camera to obtain an RGB video and an infrared thermal imaging video of a human face, an area acquisition module of a health index calculation subsystem which acquires a forehead area and a breathing area from the RGB video and the infrared thermal imaging video of the human face, a data calculation module of the health index calculation subsystem which calculates corresponding body temperatureand breathing data from the forehead area and the breathing area and transmits the data to the health evaluation subsystem, and a health assessment subsystem which processes the body temperature and respiration data to obtain a corresponding data assessment result. According to the system, breath detection and screening can be carried out while the body temperature is detected, abnormal breath conditions are taken into consideration of health assessment, and people with abnormal breath can be identified in time, so spread of infectious respiratory diseases in public places can be prevented toa certain extent.

The invention discloses an oxygen mask for emergency treatment. The mask comprises a mask body, an oxygen inlet installation seat is arranged below the middle part of the mask body; a through hole isformed in the upper portion of the mask body, an oxygen inlet pipe head is installed at the bottom of the oxygen inlet installation base, an oxygen inlet pipe is fixedly connected to the lower portionof the oxygen inlet pipe head through a reinforcing pipe sleeve, a first-aid air bag is arranged at the end, away from the mask body, of the oxygen inlet pipe, and an inlet pipe installation head isarranged at the top of the first-aid air bag. The oxygen mask for emergency treatment relates to the technical filed of medical equipment. The oxygen mask can be quickly used for supplying oxygen to apatient in emergency treatment; an air inlet air bag can be lengthened through the oxygen inlet pipe and can work on the side to prevent the chest from being changed, and a mask bottom pad and an adsorption layer are arranged in a breathing area in the mask body and can be used for adsorbing blood or water sprayed by some patients to prevent the air inlet pipe from being blocked.

The invention relates to a respiratory rate detection method and device, a storage medium and electronic equipment. The method comprises the following steps: acquiring at least two image groups, wherein each image group comprises a visible light image and a thermal image matched with the visible light image; extracting a first target area in the visible light image, wherein the first target area points to a breathing area of a target object; determining a second target area corresponding to the first target area in the thermal image; determining temperature information corresponding to each second target area on the basis of the thermal image, wherein the temperature information periodically changes along with respiration of the target object; and determining the breathing rate of the target object according to the temperature information. According to the method, the respiratory rate detection result can be obtained under the condition that the target object is not contacted, non-contact detection is achieved, and the good detection speed and detection accuracy are achieved.

The invention discloses an integrated dual-light-source seat applicable to a roadside respiratory zone air quality on-line monitoring system. The integrated dual-light-source seat comprises an infrared light source, an ultraviolet light source, a beam coupling lens, a focusing mirror, a base and a cover plate, wherein the base adopts a semi-closed cubic structure, the infrared light source is fixed on a side surface of the base, the ultraviolet light source is fixed on the bottom surface of the base, the ultraviolet light source and the infrared light source are mounted with an included angle being 90 degrees, the beam coupling lens is fixed in the base, the focusing mirror is fixed on a side surface, opposite to the infrared light source fixing surface, of the base, and the cover plate is fixed on the unclosed side of the base through a screw assembly. The integrated dual-light-source seat has the advantages that an optical signal utilization rate is high, and high-power light sources can be used; the aperture of a light spot of an emitted light path is large, and the seat is applicable to a long-optical-path optical system; the seat is simple in structure, small in size, convenient to debug and good in stability and can be matched with different devices for use.

The invention discloses an air disinfection station, specifically to a movable disinfection station. The movable disinfection station can rapidly achieve the effect of disinfection and directly deliver clean air to the respiratory zone of a user, enables the concentration of PM2.5 in the air to reach international advanced standards and has the advantages of mobility and air treatment capacity of more than 6000 cubic meters per hour. The movable disinfection station comprises a shell, a control panel, a pre-filter, a fan group, an adsorption medium filter, a low-resistance high-efficiency filter, an ultraviolet lamp group, etc., and has the characteristics of good usage effect, convenience in usage and maintenance, etc.

The invention discloses a multifunctional comfortable mask which comprises a breathing area component and a fitting wearing area component, and the fitting wearing area component is hollow, is provided with a hollow area and is made of a porous foaming polyurethane material; the breathing area component comprises a filtering layer, an antibacterial layer and a sterilizing layer from outside to inside, the outline shape of the breathing area component is matched with the shape of the hollow area, and the breathing area component is in sealed connection with the fitting wearing area component;the breathing area component is convex and is not tightly attached to the mouth and the nose, and the mask is designed to be of a bikini type. According to the mask, the gap can be filled up along theshape of the face by virtue of the elasticity of the material without other component s, so that the mask can be tightly attached to the face, and the breathability, the breathing zone comfort, the cheek comfort, the ear comfort and the portability of the mask are improved while multiple functions of filtration, antibiosis and sterilization are guaranteed. The multifunctional comfortable mask issuitable for daily protection of common people and can also be applied to susceptible spaces such as hospitals.

The invention relates to a respiratory rate detection method and device, a storage medium and electronic equipment. The method comprises the steps that at least two thermal images are acquired, the thermal images are obtained through rendering based on temperature information of a preset area, the preset area comprises a target object, and a breathing area of the target object falls into a target area determined based on the preset area; for each thermal image, temperature information of the target area in the thermal image is extracted, and the temperature information periodically changes along with respiration of the target object; and the breathing rate of the target object is determined according to the extracted temperature information. According to the method, the respiratory rate of the target object can be determined by analyzing the temperature information of the target area of the thermal image, so that non-contact detection is realized, and the method has good detection speed and detection accuracy.

The invention provides a sampling method for tritiated water in air. A system used by the sampling method comprises a cooling fan, a semiconductor refrigeration sheet, a heat insulation layer, a collection container, a movable cover plate, a hose I, a hose II, a hose III, a power air pump, a power supply, an AC plug, a temperature display, a temperature sensor and a flow display controller. The sampling method comprises the steps of adjusting an intake flow rate equivalent to short-term respiratory volume of a person through the power air pump; pumping tritiated water vapor in air by using a peltier effect of the semiconductor refrigeration sheet; quickly condensing the tritiated water vapor into tritiated water through a coil of the collection container; carrying out volume measurement and liquid scintillation counting on the collected tritiated water; and obtaining the inhalation dose of tritium in air near a respiratory zone of a worker of a tritium-related place according to a calculation formula. The sampling method is suitable for fast sampling of the tritiated water of the air near the worker of the tritium-related place, and is a practical and simple sampling method; and a support can be provided for radiation protection of the worker of the tritium-related place.

An air extraction device including suction apparatus having a suction nozzle situated on a box arranged at the rear of a worktop, the suction nozzle being connected to an extraction duct, the device including supply apparatus having a blower fan connected to a fresh air inlet and a supply tube containing at least one supply nozzle provided with an air outlet slot, the air exiting the slot in the form of at least one air curtain directed towards the suction nozzle, the supply tube being situated at the end of an articulated arm. The articulated arm is pivotably mounted such that, when the arm is in a low position, the air curtain separates a breathing area of an operator in front of the worktop from a handling area situated on the worktop, such that the operator's movements do not cross the air curtain.

The invention discloses a fresh air mask. The fresh air mask comprises a mask main body, an air intake device and an air exhaust device; the air intake device and the air exhaust device are movably arranged on the outer side of the mask main body; and the inner side of the front surface of the mask main body is provided with a one-way intake valve and a one-way exhaust valve, and the upper portionof the outer side of the mask main body is provided with a plastic nose clip. The fresh air mask is simple in structure, reasonable in design, simple in appearance, convenient to use and comfortableduring wearing; by arranging the air intake device and the air exhaust device in the breathing zone, a user can exhaust exhaled waste air in time, gas which is emitted by a traditional Chinese medicine tablet and is beneficial to the user is taken into a respiratory tract through the air intake device, it can be ensured that the user can inhale enough air when wears the mask, and the good physicaltherapy effect is achieved; an air intake pipe and an air exhaust pipe are fixedly arranged in the mask main body and are convenient to store, the service life of the mask is prolonged, and it can beensured that clean air can be input any time by replacing the traditional Chinese medicine tablet and a filtering assembly.

The invention relates to a method for calculating fresh air volume of a single-channel multi-partition variable-air-volume air conditioner. The fresh air volume calculation idea of the system comprises: (1) the per capita fresh air volume and the unit area fresh air volume of each partition are determined; calculating the fresh air demand of the system; (2) calculating regional fresh air volume according to concepts of a respiratory region, regional air distribution efficiency and the like; and (3) calculating the fresh air volume of the multi-partition system according to the concepts of regional ventilation efficiency, critical ventilation partition, system ventilation efficiency and the like. Two methods for calculating the fresh air volume exist all the time: one method is to take thehighest fresh air ratio in each subarea as the system fresh air ratio, so that the fresh air volume of the ventilation subarea is large, and the fresh air energy consumption is increased; In another method, the fresh air demand quantity of each partition is superposed to serve as the fresh air quantity of the system, so that the fresh air quantity supply of some partitions with high fresh air ratio requirements represented by critical partition positions is insufficient. According to the method, the critical partition fresh air supply is guaranteed, the multi-partition fresh air amount is minimum, and the goal of pursuing the design of the variable air volume air conditioner system all the time is met.

The invention provides a skin care mask which comprises a breathing region and a face attaching region, wherein the breathing region is made of a breathable material, and is positioned in a protrudingregion in the middle of the skin care mask; and a space is formed between the breathing region and the face of a user; the nostrils of the user are positioned in the space; the face attaching regionis positioned at the left and right sides of the breathing region, and is fit with the skin of the user; the face attaching region comprises an airtight layer, a skin care layer and a breathable layer; the skin care layer comprises a skin care unit; the skin care unit can be in contact with the skin of the user through the breathable layer, and can generate gas through the reaction with moisture generated by the skin of the user; and the gas is in contact with the skin of the user.

The present invention provides a surgical smoke removing device, which includes a smoke removing apparatus adapted to be connected to an application apparatus. The smoke removing apparatus includes an air cleaner, a stage, and a controller. The air cleaner has an inlet to suck in air, and an outlet to blow out clean air. The stage is configured to move the outlet of the air cleaner, such that the outlet targets at an emission source and / or a breathing zone of a user. The controller is connected to the air cleaner and the stage.

An intelligent and efficient dust collection workbench for grinding the two ends of a large workpiece, comprising an operation area, a feeding area and a discharging area. The operation area is used for grinding the two ends of the workpiece; the feeding area and the discharging area are used for storing large work before and after grinding, respectively; a supporting platform for large workpieces is arranged in the middle of the workbench, and downward-concave L-shaped exhaust outlets are formed in the left side and the right side of the workbench; a L-shaped air outlet is connected with a dust collecting bin and used for collecting large-particle grinding dust; a rectification structure of an L-shaped air outlet is arranged in the workbench; the workbench is connected with a dust remover through an air pipe, and dusty gas is purified by the dust remover and then emptied; an infrared detector is arranged on the workbench, and intelligent control over air exhaust is achieved according to whether a worker is detected or not. The workbench can reduce the dust concentration of a respiratory zone of a worker to 0.4 mg / m3, and the dust collecting efficiency is 98.43%, so that the working environment is remarkably improved, and the occupational health of the worker is effectively guaranteed.

The invention discloses a dedusting system of a whole factory building, which comprises an air funnel, an air handling unit, a top air-return opening, an air supply pipeline and an air-return pipeline, wherein the air handling unit is arranged outside a workshop, the air funnel is arranged at the lower part of the inner side of the workshop, one end of the air supply pipeline is connected with the air funnel, and the other end of the air supply pipeline is connected with the air handling unit through the air supply pipeline; the top air-return opening is arranged at the top inside the workshop, one end of the air-return pipeline is connected with the top air-return opening and the other end of the air-return pipeline is connected with the air handling unit. The air supply direction of theair funnel is adjusted to change the air distribution of returned air, welding fume with higher temperature drifts upwards under the action of hot buoyancy, the fume further drifts upwards by the push of air sent out from the air funnel and does not move transversely, thereby the welding fume can be avoided from passing through the respiratory zone of the human body; and the fume and harmful gases are sucked into the air handling unit through the air-return pipeline under the suction action of the air-return opening at the top of the workshop and can not be directly removed outdoors, thereby the secondary pollution can not be caused.

The invention belongs to the technical field of pig house ventilation, and discloses a pig house epidemic prevention and air environment guarantee combined system which comprises a control system, an air inlet pipeline, an air inlet tunnel and a wall-attached jet flow generator. The wall-attached jet flow generator is communicated with the air inlet tunnel through an air inlet pipeline, and an air volume adjusting valve and an air volume sensor which are connected with the control system are arranged on the air inlet pipeline; a flow guide component is arranged below the wall-attached jet flow generator; an odor discharge area is formed below the raised floor; each pigsty area is provided with a temperature sensor and a wall-attached jet generator, the air inlet tunnel, the air inlet pipeline, the wall-attached jet generators and the odor exhaust area form an air supply-exhaust system, and fresh air is sent to the live pig breathing area from the relatively clean area, then sent to the polluted area and exhausted through the slatted floor. The diffusion range and retention time of harmful pollution gas are reduced; a dosing pipe is arranged at the front end of the air inlet pipeline, a water inlet system is arranged at the top of the pig house, a liquid adding pipe is arranged at the front end of the water inlet system, and epidemic prevention and disease treatment are achieved.

The invention discloses a training mask, which is characterized by comprising a mounting soft body, the mask body is clamped on the mounting soft body and comprises an upper breathing area corresponding to the nasal cavity of a human body and a lower breathing area corresponding to the nasal cavity of the human body; the one-way structure is attached to the interior of the upper breathing area; the lower breathing area corresponds to the mouth of the human body; the adjusting structure is connected to the outer side of the lower breathing area; the outer shell is clamped on the mask body; the bandage is arranged between the mask body and the outer shell, the air inlet amount and the air outlet amount of the mouth and the nose of a user can be adjusted through a one-way structure and an adjusting structure, the user can be made to be in an oxygen deficit state in the motion state, the body is stimulated to release more erythropoietin, the blood vessel density of muscles is increased, and the cardiopulmonary ability is improved.

The invention discloses a self-adaptive multi-scale respiration monitoring method based on a camera, and relates to the technical field of video image signal recognition processing. The technical defect that a local optimal respiration signal and a global optimal respiration signal cannot be obtained by adopting a single image scale in the prior art is overcome. The method comprises the following steps: (1) collecting a respiration monitoring object in real time by adopting a camera; (2) performing multi-scale rule pre-segmentation on the video image acquired by the camera, and performing local respiration signal identification and extraction on each pre-segmented unit region under each scale; defining a unit region having a local respiratory signal output as a target region; and (3) comparing the local respiration signals extracted from the target area pre-segmented by each scale, determining an optimal segmentation scale according to the quality of the local respiration signals, and outputting the local respiration signals extracted from the target area under the optimal segmentation scale as monitoring respiration signals. The optimal segmentation scale is adaptively determined according to the quality of the respiration signals, so that the optimal respiration areas and the global optimal respiration signals under multiple scales are accurately obtained from the monitoring video of the respiration monitoring object, and the reliability of the camera for monitoring the respiration signals in a non-contact mode is improved.

The invention discloses a targeted oxygen supply device for a dynamic sitting posture breathing area of a person. The device comprises a main body; the main body is of a hollow cavity structure; an oxygen inlet communicated with an inner cavity of the main body is formed in the main body; an oxygen outlet supporting plate is arranged on the face, opposite to the oxygen inlet, of the main body; the oxygen outlet supporting plate comprises a first mounting plate and a second mounting plate which are spliced with each other; the oxygen outlet supporting plate is outwards provided with at least four oxygen outlets communicated with an inner cavity of the oxygen outlet supporting plate; the oxygen outlets are distributed in a matrix mode; and a matrix is in bilateral symmetry with the splicing line of the first mounting plate and the second mounting plate as a symmetry axis. Through reasonable arrangement of a component structure, on the basis of capturing a human body breathing area in a sitting posture state and on the basis of determining an oxygen supply target area, full-coverage oxygen supply of the breathing area is realized, the accessibility of oxygen supply is improved, and a multi-oxygen-outlet coupling mode is adopted, so that the oxygen concentration distribution of the breathing area is more uniform, the oxygen consumption is saved by 65%, and meanwhile, a non-direct-contact oxygen supply mode can also reduce the influence of wearing the oxygen supply device on the physical and psychological reaction of the person.

The invention discloses a multifunctional mask which comprises a mask frame, a protective cover and other components and can be compatible with various masks and mask pads. The multifunctional mask comprises a frame body, the curved surface of the inner side of the frame body is matched with the face of an individual, and the fitting degree is optimal; a breathing area is formed in the middle of the frame body, and the breathing area is matched with the area where the mouth and the nose of the face model face are located; and the frame body of the mask frame is made of the light hard material so that the mask frame has the effect of keeping the curved surface shape of the face of a user from deforming for a long time, and the contraction force at the four corners of the mask frame body of a wearer can be fully and uniformly transmitted to the mask during use. The problems of a peripheral leakage risk and poor comfort caused by the fact that the mask is not in close fit with the face of a user when the mask is worn are solved, and practical, multi-directional and multifunctional components with the protection function are arranged on the frame so that the overall protection performance of the mask is improved to a new level.

A purification device of exercise environment is provided and includes a main body, a purification unit, a gas guider and a gas detection module. The main body has at least one gas inlet and at least one gas outlet. The purification unit, the gas guider and the gas detection module are disposed in the main body. The purification unit filters a gas in an exercise environment introduced through the at least one gas inlet. The gas guider operates continuously to transport the gas in the exercise environment to be introduced through the at least one gas inlet and to flow through the purification unit. The gas detection module detects a gas information and a particulate cleanliness of the air in the exercise environment, and the particulate cleanliness of the gas in the breathing region around the nose of the exerciser reaches 0˜20 μg / m3 accordingly.

The invention discloses a small air port energy-saving purification system which mainly comprises an air return pipe, one end of the air return pipe is connected with the air return end of an air conditioning system, an air inlet is formed in the air return pipe, the air return pipe is installed at the top in a room, an air outlet channel is arranged on the ground in the room, and a walking board is laid on the ground in the room. Wherein an air guide port opposite to the air outlet channel is formed in the plate surface, one end of the static pressure box is connected with the air outlet end of the air conditioning system, the other end of the static pressure box is arranged in the air outlet channel, and air port purifiers are arranged on the air inlet and the air guide port. By means of the design, most polluted air in air can be effectively concentrated at the top air return position higher than the breathing area, a floor air opening for ground air supply is close to indoor personnel, and purified clean air can be supplied to the indoor personnel in time.

The invention relates to a brain protein hydrolyzate compound preparation for nerve protection and nerve repair and a preparation method thereof, belonging to the technical field of pharmacy. In order to solve the problem that the existing cerebroprotein hydrolyzate easily causes allergies and the oral utilization rate is low, the present invention provides a compound preparation of cerebroprotein hydrolyzate for neuroprotection and nerve repair, and the compound preparation is nasal mucosa administration preparation , containing 0.1-5wt% of cerebroprotein hydrolyzate, and also containing pharmaceutical auxiliary materials and water for injection. Administered through the nasal cavity, absorbed through the nasal mucosa, it can be absorbed into the brain in the respiratory area and olfactory area of ​​the nasal cavity, and directly enter the central nervous system. It has the characteristics of rapid absorption, high bioavailability, small side effects, and convenient administration. In the present invention, the brain protein hydrolyzate is made into nano-scale liposomes, so that the active ingredients are more easily absorbed through the mucous membranes, efficiently enter the brain cells and play a role, can maintain the local drug concentration stably for a long time, reduce the drug dosage, and are not easy to cause adverse effects on the body. reaction.

The invention discloses a collision-type respiratory zone air supply system which comprises a U-shaped smoke-blocking vertical wall, an air supply pipe and a static box. The U-shaped smoke-blocking vertical wall comprises a top plate and two side plates which are perpendicular to the top plate and which are symmetrically fixed below the top plate. The top plate and the two side plates form a semi-closed space with a downward opening. The U-shaped smoke-blocking vertical wall is fixedly suspended in a channel. The static box corresponds to the U-shaped smoke-blocking vertical wall and is disposed at the bottom of the channel. The static box is connected with the air supply pipe which is connected with a fan. The upper end of the static box is provided with a second spout and a first spout. The spouts are symmetrically disposed in relation to the U-shaped smoke-blocking vertical wall. Outgoing air from the first spout and outgoing air from the second spout form an included angle and intersect at the lower end of the U-shaped smoke-blocking vertical wall. Both the first and second spouts supply air at the speed of 0.5m / s. The collision-type respiratory zone air supply system guarantees an effective escape channel to be formed in the channel, only the static box is required to be set at a corner of the channel, and excavated volume of the channel is reduced evidently.

The invention relates to the technical field of intelligent household appliances, and discloses a range hood which comprises a shell, an isolation plate, a driving mechanism, a user information acquisition module and a processor assembly. The shell is provided with an oil fume suction opening. One side edge of the isolation plate is connected with the shell and located on the upper side of the oil fume suction opening. The driving mechanism is connected with the isolation plate and can drive the isolation plate to rotate. The user information acquisition module is used for acquiring respiratory region position information of a user. The processor assembly is used for determining the respiratory region position information, acquired by the user information acquisition module, of the user, determining the target angle of the isolation plate according to the corresponding relation between the respiratory region position information and the angle of the isolation plate, and controlling the driving mechanism to drive the isolation plate to rotate to the target angle. According to the range hood, the requirement of different users for oil fume shielding can be met, the oil fume suction amount of different users can be reduced, the applicability of the range hood is improved, and the body health of different members in a family can be protected.

Anesthetic equipment capable of automatically switching anesthetic gas and oxygen comprises a respiratory mask; an openable and normally closed end cover is arranged at the front end of an oxygen pipe; an anesthetic piston valve is arranged at the front end of an anesthetic gas pipe; a waste gas piston valve is arranged at the front end of a waste gas pipe; the anesthetic piston valve and the waste gas piston valve are controlled to be opened by an inspiration process and an expiration process of a patient, so that the anesthetic gas pipe communicates with a respiratory region when the patient inhales, and the waste gas pipe communicates with the respiratory region when the patient exhales; the tail end of the anesthetic gas pipe is connected with an anesthetic tank through a pressure pump; a switching mechanism capable of cooperating with the end cover is further arranged on the side, facing the pressure pump, of the anesthetic piston valve; and the switching mechanism is used for being triggered by the continuous pressurization effect of the pressure pump after respiratory arrest of the patient so as to isolate the communication between the anesthetic gas pipe and the respiratory region and open the end cover to make the oxygen pipe communicate with the respiratory region. According to the anesthetic equipment, in the inhalation type anesthesia process, supply of anesthetic / oxygen is switched once the respiratory arrest occurs, so that precious time for rescuing a patient is saved to avoid that an accident is further aggravated.

The invention discloses a non-contact respiratory rate detection method based on a depth image. The method comprises the following steps: acquiring an original depth image, acquiring a figure position and acquiring depth information; by utilizing a maximum distance limiting method and a maximum outer contour extraction algorithm, respectively eliminating influences of void noise and close-range interferents in the original depth image, creating a human body mask image and obtaining a human body depth image; positioning a breathing area by utilizing the correlation between a human chest area and human skeleton joint points; extracting respiratory signal data contained in the depth image of the thoracic cavity region by using a principal component analysis algorithm; and obtaining the human respiratory rate through a peak value detection method. The influence of void noise and interference objects is eliminated when the human body depth image is obtained, so that the human body breathing frequency with accurate data is obtained, the equipment used in the method is convenient to carry, and the price can reach the wide application level.

The invention relates to the field of mask testing, and concretely relates to mask blockage testing equipment. A testing assembly, a dust input assembly, a dust output assembly and a breathing simulation assembly are arranged in a machine body, the testing assembly comprises a test box, a head mold and a pressure sensor, and the two sides of the test box are connected with the dust input assembly and the dust output assembly respectively; a mask is worn on a head mold in the test box, a breathing area is formed between the mask and the head mold, the breathing simulation assembly comprises a breathing machine, a first connecting tube, a second connecting tube, a third connecting tube and a temperature and humidity control system, the breathing machine is communicated with the breathing area through the first connecting tube, and the breathing machine is connected with the temperature and humidity control system through the second connecting tube; and the temperature and humidity control system is communicated with the breathing area through the third connecting tube, a collecting tube on the pressure sensor extends into the breathing area after passing through the head mold, a probe is arranged in the test box, a dust tester connected with the probe is arranged outside the test box, and the dust output assembly comprises an exhaust fan and a flow meter. According to the invention, the blocking test can be better carried out on the mask.