Backpack stretcher

Abstract

Embodiments of the present disclosure disclose a backpack stretcher. The backpack stretcher comprises at least two backpack bodies and an inflating device, the backpack body comprising a backpack accommodating part, a bed surface extending part and a connecting mechanism; the backpack accommodating part is used for accommodating articles, the bed surface extending part comprises a foldable cloth surface, the foldable cloth surface is folded and accommodated at the back of the backpack accommodating part when the bed surface extending part is in a storage state; the connecting mechanism comprises two side edge connecting pieces, the two side edge connecting pieces are respectively fixed to the two sides of the bed surface extending part when the at least two backpack bodies are connected to form a stretcher, the ends of the two side edge connecting pieces are respectively connected to the adjacent connecting mechanisms on the adjacent backpack bodies, and the two side edge connecting pieces are accommodated in the backpack accommodating part when the backpack body is used as a backpack; the bed surface extending part comprises at least one inflatable air bag, and the inflating device is used for inflating the at least one inflatable air bag. The backpack stretcher can improve user convenience.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of stretcher technology, and more specifically to backpack-type stretchers. Background Technology

[0002] A stretcher is a medical device used to transport the injured or sick, and is widely used in emergency care, disaster relief, battlefield medical care, and other scenarios. Most stretchers currently available are one-piece designs, and are typically carried by two people.

[0003] However, the inventors discovered that the following technical problems often arise when using the above method to transport stretchers:

[0004] To facilitate patients lying down, stretchers are relatively large, which often results in greater pressure on the stretcher, making it difficult for users to carry and causing inconvenience.

[0005] The information disclosed in this background section is only intended to enhance the understanding of the background of the inventive concept, and therefore may contain information that does not form prior art known to those skilled in the art. Summary of the Invention

[0006] The summary portion of this disclosure is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description portion. This summary portion is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0007] Some embodiments of this disclosure propose a backpack-style stretcher to address one or more of the technical problems mentioned in the background section above.

[0008] In a first aspect, some embodiments of this disclosure provide a backpack-type stretcher, which includes: at least two backpack bodies and an inflation device, wherein each of the at least two backpack bodies includes a backpack receiving portion, a bed surface extension portion, and a connecting mechanism; the backpack receiving portion is used to store items, and the bed surface extension portion includes a foldable fabric surface, which is folded and stored on the back of the backpack receiving portion when the bed surface extension portion is in a stored state; the connecting mechanism includes two side connectors, which are respectively fixed to both sides of the bed surface extension portion when the at least two backpack bodies are connected to form a stretcher, and the ends of the two side connectors are respectively connected to adjacent connecting mechanisms on adjacent backpack bodies; when the backpack body is used as a backpack, the two side connectors are stored in the backpack receiving portion; the bed surface extension portion includes at least one inflatable airbag, and every two inflatable airbags are connected, and the inflation device is used to inflate the at least one inflatable airbag.

[0009] Optionally, a storage layer is provided on the back of the backpack compartment; when the bed extension is in the storage state, the foldable fabric is folded and stored in the storage layer; side connector storage pockets are provided on both sides of the storage layer, and when the backpack body is used as a backpack, the two side connectors are stored in the side connector storage pockets.

[0010] Optionally, the connection between the above-mentioned storage layer and the back of the above-mentioned backpack compartment can be any of the following: zipper connection, adhesive connection, snap connection or magnetic connection.

[0011] Optionally, the at least one inflatable airbag includes an inflatable airbag located on the bed surface, an inflatable airbag located on the side, and an inflatable airbag located at the head; the at least one inflatable airbag is provided with an inflation port, the inflation port is provided with an overpressure protection valve, and when the at least two backpack bodies are connected to form a stretcher, the inflation device is connected to the inflation port to inflate the at least one inflatable airbag.

[0012] Optionally, the backpack-type stretcher further includes at least one circulating air extraction and jet device. When the at least two backpack bodies are connected to form a stretcher, the at least one circulating air extraction and jet device is disposed at the bottom of the stretcher. Each circulating air extraction and jet device includes an air inlet, a filter, a turbine fan, a high-pressure air chamber, and a jet outlet. The filter is disposed at the air inlet, the fan inlet of the turbine fan is connected to the air inlet, the fan outlet of the turbine fan is connected to the high-pressure air chamber, and the high-pressure air chamber is connected to the jet outlet.

[0013] Optionally, the backpack-type stretcher also includes a camera device, which includes a camera and a processor; when the at least two backpack bodies are connected to form a stretcher, the camera device is located on the side of the stretcher.

[0014] Optionally, when at least two backpack bodies are connected to form a stretcher, a pair of proximity sensors are provided on each pair of connected side connectors, and each pair of proximity sensors is communicatively connected to the processor.

[0015] Optionally, the camera device further includes a rotating base. When the at least two backpack bodies are connected to form a stretcher, the rotating base is fixed to the side of the stretcher, and the camera is positioned above the rotating base. The rotating base is used to drive the camera to rotate.

[0016] Optionally, the processor is configured to perform the following steps: acquiring a set of connector distance information sent by each pair of associated proximity sensors, wherein each pair of proximity sensors corresponds to a proximity sensor identifier, and each connector distance information corresponds to a pair of proximity sensors; performing distance anomaly detection on the connector distance information set to determine whether the connector distance information set includes connector distance information characterizing a distance anomaly; in response to determining that the connector distance information set includes connector distance information characterizing a distance anomaly, identifying the connector distance information characterizing a distance anomaly in the connector distance information set as abnormal connector distance information, thereby obtaining an abnormal connector distance information set; and for each abnormal connector distance information in the abnormal connector distance information information set, performing the following steps: determining the connector distance information corresponding to the abnormal connector distance information. A proximity sensor identifier is used; based on the proximity sensor identifier, the rotation angle corresponding to the camera is determined; the camera is controlled to rotate according to the rotation angle; a photo to be detected is acquired through the camera; the photo to be detected is preprocessed to obtain a preprocessed photo to be detected; the preprocessed photo to be detected is subjected to connector edge detection processing to obtain connector edge information; the connector edge information is compared with normal connector edge information to obtain similarity information; it is determined whether the similarity information meets a preset abnormal similarity condition; in response to determining that the similarity information meets the preset abnormal similarity condition, a side connector abnormality alarm information is generated based on the proximity sensor identifier; based on the side connector abnormality alarm information, the associated alarm is controlled to perform an alarm operation.

[0017] Optionally, the processor is further configured to perform the following steps: perform human detection on the photo to be detected to obtain human detection information; determine whether the human detection information meets a preset human skin exposure condition; in response to the human detection information meeting the preset human skin exposure condition, determine the human body to be processed area corresponding to the photo to be detected based on the human detection information; and perform occlusion processing on the to-be-processed area.

[0018] The above-described embodiments of this disclosure have the following beneficial effects: the backpack-style stretcher of some embodiments of this disclosure can improve user convenience. Specifically, the reason for user inconvenience is that, in order to facilitate the patient's lying down, the stretcher is relatively large, and therefore the pressure on the stretcher is often heavy, making it difficult for the user to carry. Based on this, some embodiments of the backpack-type stretcher disclosed herein include: at least two backpack bodies and an inflation device, wherein, for each of the at least two backpack bodies, the backpack body includes a backpack receiving portion, a bed surface extension portion, and a connecting mechanism; the backpack receiving portion is used to store items, the bed surface extension portion includes a foldable fabric surface, and when the bed surface extension portion is in a stored state, the foldable fabric surface is folded and stored on the back of the backpack receiving portion; the connecting mechanism includes two side connectors, and when the at least two backpack bodies are connected to form a stretcher, the two side connectors are respectively fixed to both sides of the bed surface extension portion, and the ends of the two side connectors are respectively connected to adjacent connecting mechanisms on adjacent backpack bodies; when the backpack body is used as a backpack, the two side connectors are stored in the backpack receiving portion; the bed surface extension portion includes at least one inflatable airbag, and every two inflatable airbags are connected, and the inflation device is used to inflate the at least one inflatable airbag. Because the aforementioned backpack-style stretcher divides the stretcher into multiple parts housed within a backpack, and these backpacks are then assembled to form the stretcher during use, it distributes the pressure on the stretcher, making it easier for the user to carry. Therefore, this backpack-style stretcher improves user convenience. Attached Figure Description

[0019] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and elements are not necessarily drawn to scale.

[0020] Figure 1 This is a structural schematic diagram of some embodiments of a backpack-type stretcher according to the present disclosure, in which the backpack body is in a stowed state;

[0021] Figure 2 These are schematic diagrams of some embodiments of a backpack-type stretcher with the backpack body in an unfolded state, according to the present disclosure.

[0022] Figure 3 This is a structural schematic diagram of some embodiments of the backpack-type stretcher according to the present disclosure, in which the backpack body is in a spliced ​​state. Detailed Implementation

[0023] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0024] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0025] It should also be noted that, for ease of description, only the parts relevant to the disclosure are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0026] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0027] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0028] The names of messages or information exchanged between multiple devices in the embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of such messages or information.

[0029] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] Figure 1 This is a structural schematic diagram of some embodiments of a backpack-type stretcher according to the present disclosure, in which the backpack body is in a stowed state. Figure 1 Includes a backpack body 1. The backpack body 1 includes a backpack compartment 11.

[0031] Figure 2 This is a structural schematic diagram of some embodiments of a backpack-type stretcher according to the present disclosure with the backpack body in an unfolded state. Figure 2The backpack includes a main body 1. The main body 1 includes a backpack storage section 11, a bed surface extension section 12, and a connecting mechanism 13.

[0032] Figure 3 This is a structural schematic diagram of some embodiments of the backpack-type stretcher according to the present disclosure, in which the backpack body is in a spliced ​​state. Figure 3 It includes a bed surface extension 12 and a connecting mechanism 13.

[0033] In some embodiments, the backpack-type stretcher described above may include at least two backpack bodies (e.g., backpack body 1) and an inflation device. Each of the at least two backpack bodies may include a backpack housing 11, a bed extension 12, and a connecting mechanism 13. The backpack housing 11 may be a compartment for storing items. For example, the backpack housing 11 may be used to store rescue supplies. The bed extension 12 may be a fabric for unfolding to support the patient. The connecting mechanism 13 may be a telescopic rod. The connecting mechanism 13 may be a lightweight aluminum alloy frame. The backpack body may be made of high-strength, lightweight materials to ensure structural strength when carrying the injured person, while reducing the load on rescue personnel.

[0034] In some embodiments, the backpack compartment 11 can be used to store items. The bed surface extension 12 includes a foldable fabric surface. The foldable fabric surface can be high-strength waterproof nylon fabric. When the bed surface extension 12 is in the stored state, the foldable fabric surface can be folded and stored on the back of the backpack compartment 11.

[0035] In some embodiments, the connecting mechanism 13 may include two side connectors. These two side connectors may be two lightweight aluminum alloy telescopic rods. When at least two backpack bodies are connected to form a stretcher, the two side connectors may be fixed to both sides of the bed surface extension 12. The ends of the two side connectors may be connected to adjacent connecting mechanisms 13 on adjacent backpack bodies. Specifically, for each of the two side connectors, the end of the side connector may be connected to an adjacent side connector on an adjacent backpack body. The specific connection method between the side connectors is not limited. For example, the connection method between the side connectors may be a threaded connection. When the backpack body is used as a backpack, the two side connectors may be stored within the backpack receiving portion 11.

[0036] In some embodiments, the bed extension 12 may include at least one inflatable airbag. Each pair of the at least one inflatable airbag may be connected. The inflation device may be used to inflate the at least one inflatable airbag. When the backpack body is used as a backpack, the inflation device may be placed inside any backpack body. Thus, the airbags can provide uniform support, reducing discomfort for the injured person, and in water rescues, the inflatable airbags can provide buoyancy to help the injured person float.

[0037] Optionally, a storage layer may be provided on the back of the backpack housing 11. When the bed surface extension 12 is in the folded state, the foldable fabric can be folded and stored in the storage layer. Side connector storage pockets may be provided on both sides of the storage layer. When the backpack body is used as a backpack, the two side connectors can be stored in the side connector storage pockets.

[0038] Optionally, the connection between the storage layer and the back of the backpack compartment 11 can be any of the following: zipper connection, adhesive connection, snap connection, or magnetic connection.

[0039] Optionally, drawstrings can be provided at all four ends of the foldable fabric surface. This allows the foldable fabric surface to be quickly unfolded using the drawstrings. Furthermore, adjacent backpack components can be connected and secured using the drawstrings.

[0040] Optionally, the at least one inflatable airbag may include an inflatable airbag located on the bed surface, an inflatable airbag located on the side, and an inflatable airbag located at the head. The at least one inflatable airbag may be provided with an inflation port. The inflatable airbag located on the bed surface forms a soft support surface, protecting the patient's back. Inflatable airbags on both sides of the stretcher, after inflation, can prevent the injured person from slipping and provide additional cushioning protection. An independent airbag is designed at the head of the stretcher, which, after inflation, can serve as a head support to protect the injured person's head. The inflation port may be equipped with an overpressure protection valve. The overpressure protection valve can be an overpressure valve. The overpressure protection valve can protect the inflatable airbag. With the at least two backpack bodies connected to form a stretcher, the inflation device can be connected to the inflation port to inflate the at least one inflatable airbag.

[0041] In the process of adopting technical solutions to address the aforementioned technical problems, the following technical problem often arises: when using a stretcher to transport a patient, the stretcher cannot be disassembled, the pressure cannot be distributed, and the pressure remains heavy, making patient transport inconvenient. The conventional solution to this second technical problem is to add pulleys to the bottom of the stretcher, allowing the patient to be moved by sliding on the pulleys. However, this conventional solution still has the following problem: on some complex terrains, the pulleys cannot slide smoothly, instead causing bumps and further injury to the patient.

[0042] Considering the problems with the conventional solutions mentioned above, and addressing the second technical issue—that when using a stretcher to transport patients, the stretcher cannot be disassembled, the pressure cannot be distributed, and the pressure remains relatively high, thus causing inconvenience in patient transport—the following solution can be adopted based on the current technological situation:

[0043] Optionally, the backpack-type stretcher may further include at least one circulating air extraction jet device. The number of circulating air extraction jet devices is not limited. As an example, the backpack-type stretcher may include four circulating air extraction jet devices. These four devices may be respectively located at the four corners of the backpack-type stretcher. With at least two backpack bodies connected to form the stretcher, the at least one circulating air extraction jet device may be located at the bottom of the stretcher. Each circulating air extraction jet device may include an air inlet, a filter, a turbine fan, a high-pressure air chamber, and a jet outlet. The filter can be used to filter impurities in the air; the turbine fan can draw in and compress external air, while simultaneously ejecting high-pressure gas to generate thrust; the high-pressure air chamber can store the compressed high-pressure gas, providing a stable air source for jetting. The filter can be located at the air inlet. The fan inlet of the turbine fan can communicate with the air inlet. The fan outlet of the turbine fan can communicate with the high-pressure air chamber. The high-pressure air chamber can communicate with the jet outlet.

[0044] Optionally, each circulating exhaust jet device may further include a turbine generator and an energy storage battery. The turbine generator is disposed in the circulation channel of the gas ejected from the jet nozzle. The turbine generator is electrically connected to the turbine fan and the energy storage battery. The turbine generator can generate electricity driven by the exhaust gas flow. The energy storage battery can store the electricity generated by the turbine generator and power the turbine fan.

[0045] Optionally, the aforementioned jet nozzle is further equipped with a flow control valve, a directional control valve, and a rotatable nozzle. The output end of the aforementioned high-pressure gas chamber can be connected to the input end of the aforementioned flow control valve. The input end of the aforementioned directional control valve can be connected to the output end of the aforementioned flow control valve. The input end of the aforementioned rotatable nozzle can be connected to the output end of the aforementioned directional control valve. The flow control valve can adjust the gas flow rate and pressure at the nozzle. The aforementioned rotatable nozzle can be driven by a servo motor or a stepper motor. It supports horizontal (0-360°) and pitch (±30°) angle adjustment. The directional control valve and the rotatable nozzle can adjust the jet direction to achieve multi-directional thrust.

[0046] Optionally, the backpack-type stretcher may further include a controller, a six-axis sensor, and a pressure sensor. The controller, six-axis sensor, and pressure sensor can all be located at the bottom of the stretcher. The six-axis sensor, pressure sensor, and circulating air extraction device can all be connected to the controller.

[0047] The controller described above can be configured to perform the following steps:

[0048] The first step is to acquire the pressure information detected by the aforementioned pressure sensor. This pressure information can characterize the pressure exerted on the stretcher.

[0049] The second step is to determine whether the aforementioned pressure information is less than or equal to a preset water buoyancy pressure threshold. This preset water buoyancy pressure threshold can be a pre-defined threshold representing the pressure at which the stretcher is positioned on the water surface.

[0050] The third step involves, in response to determining that the aforementioned pressure information is less than or equal to the aforementioned preset water flotation pressure threshold, controlling each rotatable nozzle to rotate to a preset water flotation rotation angle, and adjusting the speed of each turbine fan to a preset water flotation speed. The aforementioned preset water flotation rotation angle can be a pre-set angle at which the rotatable nozzles adjust when the stretcher is on the water surface. The aforementioned preset water flotation speed can be a pre-set speed at which the turbine fans adjust when the stretcher is on the water surface.

[0051] Fourth, in response to determining that the aforementioned pressure information is greater than the aforementioned preset water buoyancy pressure threshold, the stretcher tilt angle information and stretcher acceleration information detected by the aforementioned six-axis sensor are acquired. The stretcher tilt angle information can be information characterizing the tilt angle of the stretcher. The stretcher acceleration information can be information characterizing the moving acceleration of the stretcher.

[0052] The fifth step is to generate nozzle rotation information based on the stretcher tilt angle information. This nozzle rotation information can represent the rotation angle of the nozzle. In practice, based on the stretcher tilt angle information, the controller can generate nozzle rotation information using a PID (proportional integration differentiation) control algorithm.

[0053] The sixth step involves controlling the rotation of each rotatable nozzle based on the aforementioned nozzle rotation information. In practice, the controller can adjust each rotatable nozzle to the rotation angle corresponding to the nozzle rotation information.

[0054] Step 7: Based on the stretcher tilt angle information, stretcher acceleration information, and pressure information, generate a set of jet volume information corresponding to each rotatable nozzle. Each jet volume information in the set corresponds to one rotatable nozzle. The jet volume information can represent the flow rate of the gas ejected from each nozzle. In practice, firstly, the controller can input the pressure information into a pre-trained basic jet volume information generation model to obtain basic jet volume information. This basic jet volume information can represent the basic flow rate of the gas ejected from each circulating air extraction device. The basic jet volume information generation model can be a pre-trained machine learning model that takes pressure information as input and basic jet volume information as output. For example, the basic jet volume information generation model can be a linear regression model. Then, the controller can input the stretcher tilt angle information and stretcher acceleration information into a pre-trained stretcher terrain information generation model to obtain stretcher terrain information. This stretcher terrain information can represent the terrain conditions where the stretcher is located. For example, this stretcher terrain information can represent a flat road surface. The aforementioned stretcher terrain information can represent information about a 45° uphill slope. The aforementioned stretcher terrain information generation model can be a pre-trained machine learning model that takes stretcher tilt angle and acceleration information as input and stretcher terrain information as output. For example, the aforementioned stretcher terrain information generation model can be a random forest model. Then, the aforementioned controller can select a preset stretcher terrain resistance compensation information set corresponding to the aforementioned stretcher terrain information from a preset stretcher terrain resistance compensation information set configuration table as the target stretcher terrain resistance compensation information set. The aforementioned preset stretcher terrain resistance compensation information set configuration table can be a pre-set relationship table between the stretcher terrain resistance compensation information set corresponding to each cyclic air extraction jet device and the stretcher terrain information. The aforementioned preset stretcher terrain resistance compensation information can represent the amount of air jet required to supplement each cyclic air extraction jet device. As an example, when the stretcher terrain information represents a flat road surface, the aforementioned preset stretcher terrain resistance compensation information can be an information set representing the amount of air jet required to supplement each cyclic air extraction jet device as the base air jet amount. When the stretcher terrain information represents a 45° uphill slope, the aforementioned preset stretcher terrain resistance compensation information set can represent the amount of additional jet required by the rear-end circulating air extraction jet device plus 30% of the base jet amount, and the amount of additional jet required by the front-end circulating air extraction jet device minus 30% of the base jet amount. Finally, the controller can generate a jet amount information set corresponding to each rotatable nozzle based on the aforementioned base jet amount information and the aforementioned target stretcher terrain resistance compensation information set. As an example, when the stretcher terrain information represents a flat road surface, each jet amount information in the aforementioned jet amount information set can be the aforementioned base jet amount information.When the stretcher terrain information represents an uphill slope of 45°, the air volume information corresponding to each circulating air extraction and jet device at the rear end is 130% of the above-mentioned basic air volume information, and the air volume information corresponding to each circulating air extraction and jet device at the front end is 70% of the above-mentioned basic air volume information.

[0055] The eighth step is to control each circulating air extraction and jetting device to perform jetting operations based on the jetting volume information set of each corresponding rotatable nozzle.

[0056] The aforementioned content regarding the rotation mode, as an inventive point of this disclosure, solves technical problem two: "When using a stretcher to transport a patient, the stretcher cannot be disassembled, the pressure cannot be distributed, and the pressure remains heavy, resulting in inconvenience in patient transport." The reasons for this inconvenience are as follows: When using a stretcher to transport a patient, the stretcher cannot be disassembled, the pressure cannot be distributed, and the pressure remains heavy. Solving these factors improves the ease of patient transport. To achieve this effect, the backpack-type stretcher of this disclosure includes at least one circulating air extraction jet device. With at least two backpack bodies connected to form the stretcher, the at least one circulating air extraction jet device can be located at the bottom of the stretcher. Each circulating air extraction jet device includes an air inlet, a filter, a turbine fan, a high-pressure air chamber, and a jet outlet. The filter is located at the air inlet. The fan inlet of the turbine fan is connected to the air inlet. The fan outlet of the turbine fan is connected to the high-pressure air chamber. The high-pressure air chamber is connected to the jet outlet. Each circulating air extraction jet device also includes a turbine generator and an energy storage battery. The aforementioned turbine generator is disposed on the circulation channel of the gas ejected from the aforementioned jet nozzle. The aforementioned turbine generator is electrically connected to the aforementioned turbine fan and the aforementioned energy storage battery. The aforementioned jet nozzle is also provided with a flow control valve, a directional control valve, and a rotatable nozzle. The output end of the aforementioned high-pressure gas chamber is connected to the input end of the aforementioned flow control valve. The input end of the aforementioned directional control valve is connected to the output end of the aforementioned flow control valve. The input end of the aforementioned rotatable nozzle is connected to the output end of the aforementioned directional control valve. The aforementioned backpack-type stretcher also includes a controller, a six-axis sensor, and a pressure sensor. The aforementioned controller, the aforementioned six-axis sensor, and the aforementioned pressure sensor can all be disposed at the bottom of the stretcher. The aforementioned six-axis sensor, the aforementioned pressure sensor, and the aforementioned circulating air extraction jet device are all connected to the aforementioned controller. The aforementioned controller is configured to perform the following steps: acquiring pressure information detected by the aforementioned pressure sensor; determining whether the aforementioned pressure information is less than or equal to a preset water flotation pressure threshold; in response to determining that the aforementioned pressure information is less than or equal to the aforementioned preset water flotation pressure threshold, controlling each rotatable nozzle to rotate to a preset water flotation rotation angle, and adjusting the speed of each turbine fan to a preset water flotation speed. In response to determining that the pressure information is greater than the preset water buoyancy pressure threshold, the stretcher tilt angle and stretcher acceleration information detected by the six-axis sensor are acquired. Based on the stretcher tilt angle information, nozzle rotation information is generated. Based on the nozzle rotation information, each rotatable nozzle is controlled to rotate. Based on the stretcher tilt angle information, the stretcher acceleration information, and the pressure information, a set of airflow volume information corresponding to each rotatable nozzle is generated. Based on the airflow volume information set corresponding to each rotatable nozzle, each circulating air extraction and air jet device is controlled to perform air jet operation. Thus, the backpack-style stretcher adds multiple circulating air extraction and air jet devices and adds a controller, a six-axis sensor, and a pressure sensor.Pressure sensors detect the current pressure on the stretcher, determining whether it is in water. If the stretcher is in water, a small amount of air is supplied, just enough to maintain balance. If the stretcher is not in water, a six-axis sensor detects the stretcher's angle and acceleration to determine the direction of airflow from the rotatable nozzles. Based on the detected angle and acceleration, the stretcher's location is determined, and the airflow from each rotatable nozzle is adjusted according to the terrain and pressure. This allows for different airflow directions and volumes to be provided based on different terrains, making it easier for rescuers to pull the stretcher in various terrains, improving patient transport convenience, and increasing the speed and efficiency of rescue operations.

[0057] Optionally, the backpack-style stretcher may also include a camera device. The camera device may include a camera and a processor. The processor may be a central processing unit. When at least two backpack bodies are connected to form the stretcher, the camera device may be positioned on the side of the stretcher.

[0058] Optionally, when at least two backpack bodies are connected to form a stretcher, a pair of proximity sensors can be provided on every two connected side connectors. Each pair of proximity sensors can communicate with the processor. Each pair of proximity sensors can be used to detect whether the distance between the two connected side connectors has changed.

[0059] Optionally, the aforementioned camera device may further include a rotating base. With at least two backpack bodies connected to form a stretcher, the rotating base can be fixed to the side of the stretcher, and the camera can be positioned above the rotating base. The rotating base can be used to rotate the camera.

[0060] Optionally, the processor described above can be configured to perform the following steps:

[0061] The first step is to obtain the connection distance information set transmitted by each pair of proximity sensors. Each pair of proximity sensors corresponds to a proximity sensor identifier, and each connection distance information corresponds to a pair of proximity sensors. The connection distance information represents the distance between two connected side connectors. Each proximity sensor identifier can uniquely identify a pair of proximity sensors.

[0062] The second step involves performing distance anomaly detection on the aforementioned connector distance information set to determine whether the set includes connector distance information that characterizes a distance anomaly. In practice, for each connector distance information in the aforementioned connector distance information set, the processor can determine the absolute value of the distance difference between the aforementioned connector distance information and the standard connector distance information. In response to determining that the absolute value of the distance difference corresponding to any connector distance information is greater than or equal to a preset absolute value threshold, the processor determines that any of the aforementioned connector distance information is connector distance information characterizing a distance anomaly.

[0063] The third step is to determine, in response to the determination that the above-mentioned connector distance information set includes connector distance information that represents anomalies, to identify the connector distance information that represents anomalies in the above-mentioned connector distance information set as abnormal connector distance information, thereby obtaining the abnormal connector distance information set.

[0064] Fourth, for each abnormal connector distance information in the abnormal connector distance information set, perform the following steps:

[0065] First, determine the proximity sensor identifier corresponding to the aforementioned abnormal connector distance information.

[0066] Second, based on the aforementioned proximity sensor identifiers, the rotation angle corresponding to the camera is determined. In practice, firstly, the processor can determine the position of the pair of proximity sensors corresponding to the proximity sensor identifiers. Then, the processor can determine the rotation angle corresponding to the camera based on the position of the pair of proximity sensors. Different pairs of proximity sensors can correspond to different rotation angles. The rotation angle corresponding to each pair of proximity sensors is preset.

[0067] Third, the processor controls the camera to rotate according to the aforementioned rotation angle. In practice, the processor can rotate the camera to the aforementioned rotation angle.

[0068] Fourth, the camera captures the image to be inspected. In practice, the processor described above can control the camera to take pictures and obtain the image to be inspected.

[0069] Fifth, perform image preprocessing on the aforementioned photo to be detected to obtain a preprocessed photo to be detected. In practice, the processor can use an image denoising algorithm to perform image denoising on the aforementioned photo to be detected to obtain a preprocessed photo to be detected. The image denoising algorithm may include at least one of the following: mean filtering, median filtering, or Gaussian filtering.

[0070] Sixth, perform connector edge detection processing on the preprocessed photo to be inspected to obtain connector edge information. In practice, the processor can use an edge detection algorithm to perform connector edge detection processing on the preprocessed photo to be inspected to obtain connector edge information. The edge detection algorithm can include at least one of the following: Sobel operator, Prewitt operator, or Canny edge detection.

[0071] Seventh, the similarity information of the aforementioned connector edge information is compared with that of the normal connector edge information to obtain similarity information. In practice, the processor can use a similarity comparison algorithm to compare the similarity information of the aforementioned connector edge information with that of the normal connector edge information to obtain similarity information. The aforementioned similarity comparison algorithm may include at least one of the following: cosine similarity, mean square error, or Euclidean distance.

[0072] Eighth, determine whether the above similarity information meets the preset abnormal similarity condition. The preset abnormal similarity condition can be that the above similarity information is greater than or equal to a preset similarity threshold.

[0073] Ninth, in response to determining that the above similarity information meets the above preset abnormal similarity conditions, a side connector abnormality alarm message is generated based on the above proximity sensor identifier. In practice, the processor can concatenate the above proximity sensor identifier with a preset side connector abnormality alarm template to obtain the side connector abnormality alarm message. The preset side connector abnormality alarm template can be "Abnormal, please check". The blank space is used to fill in the above proximity sensor identifier.

[0074] Tenth, based on the aforementioned side connector malfunction alarm information, control the associated alarm device to perform an alarm operation. This alarm device can be an audible and visual alarm. In practice, the processor can control the alarm device to play the aforementioned side connector malfunction alarm information.

[0075] Therefore, proximity sensors can be used to perform a preliminary check on the connection of the side connectors. If an abnormality is found during the preliminary check, the camera can be used to further inspect the abnormal side connector. If an abnormality is found during the further inspection, an alarm will be triggered to prompt the user to adjust the connection mechanism, thereby improving the safety of stretcher use.

[0076] Alternatively, the processor described above can also be configured to perform the following steps:

[0077] The first step is to perform human detection on the aforementioned photo to be tested, obtaining human detection information. This human detection information can be information representing the skin region. In practice, the processor can use a skin color detection algorithm to perform human detection on the aforementioned photo to be tested, obtaining human detection information.

[0078] The second step is to determine whether the aforementioned human body detection information meets the preset human skin leakage condition. This condition allows the skin area represented by the aforementioned human body detection information to be greater than or equal to a preset skin area range.

[0079] The third step involves determining the human body detection information in response to a preset skin leakage condition. Based on this information, the processor identifies the corresponding human body area to be processed in the photograph to be detected. In practice, the processor can define the skin area represented by the human body detection information as the human body area to be processed.

[0080] The fourth step is to mask the area to be processed. In practice, the processor can blur the area. This protects the patient's privacy and improves patient safety during photo capture.

[0081] The above-described embodiments of this disclosure have the following beneficial effects: the backpack-style stretcher of some embodiments of this disclosure can improve user convenience. Specifically, the reason for user inconvenience is that, in order to facilitate the patient's lying down, the stretcher is relatively large, and therefore the pressure on the stretcher is often heavy, making it difficult for the user to carry. Based on this, some embodiments of the backpack-type stretcher disclosed herein include: at least two backpack bodies and an inflation device, wherein, for each of the at least two backpack bodies, the backpack body includes a backpack receiving portion, a bed surface extension portion, and a connecting mechanism; the backpack receiving portion is used to store items, the bed surface extension portion includes a foldable fabric surface, and when the bed surface extension portion is in a stored state, the foldable fabric surface is folded and stored on the back of the backpack receiving portion; the connecting mechanism includes two side connectors, and when the at least two backpack bodies are connected to form a stretcher, the two side connectors are respectively fixed to both sides of the bed surface extension portion, and the ends of the two side connectors are respectively connected to adjacent connecting mechanisms on adjacent backpack bodies; when the backpack body is used as a backpack, the two side connectors are stored in the backpack receiving portion; the bed surface extension portion includes at least one inflatable airbag, and every two inflatable airbags are connected, and the inflation device is used to inflate the at least one inflatable airbag. Because the aforementioned backpack-style stretcher divides the stretcher into multiple parts housed within a backpack, and these backpacks are then assembled to form the stretcher during use, it distributes the pressure on the stretcher, making it easier for the user to carry. Therefore, this backpack-style stretcher improves user convenience.

[0082] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A backpack stretcher comprising at least two backpack bodies and an inflation device, wherein, For each of the at least two backpack bodies, the backpack body comprises a backpack accommodating part, a bed surface extension part, and a connecting mechanism; The backpack accommodating part is used for accommodating articles, and the bed surface extension part comprises a foldable cloth surface which is folded and accommodated at the back of the backpack accommodating part when the bed surface extension part is in a storage state; The connecting mechanism comprises two side edge connecting members which are respectively fixed to the two sides of the bed surface extension part in a state where the at least two backpack bodies are connected to form a stretcher, and the end portions of the two side edge connecting members are respectively connected to the adjacent connecting mechanisms on the adjacent backpack bodies, and the two side edge connecting members are accommodated in the backpack accommodating part in a state where the backpack body is used as a backpack; The bed surface extension part comprises at least one inflatable air bag, and each two of the at least one inflatable air bag are communicated, and the air inflating device is used for inflating the at least one inflatable air bag; The backpack stretcher further comprises at least one circulating air extraction and jetting device which is arranged at the bottom of the stretcher in a state where the at least two backpack bodies are connected to form a stretcher; Each circulating air extraction and jetting device comprises an air inlet, a filtering device, a turbine fan, a high-pressure air chamber, and a jetting port; The filtering device is arranged at the air inlet, the fan air inlet end of the turbine fan is communicated with the air inlet, the fan air outlet end of the turbine fan is communicated with the high-pressure air chamber, and the high-pressure air chamber is communicated with the jetting port; Each circulating air extraction and jetting device further comprises a turbine generator and an energy storage battery, the turbine generator is arranged on the circulating channel of the gas jetted from the jetting port, and the turbine generator is electrically connected with the turbine fan and the energy storage battery; The jetting port is further provided with a flow control valve, a direction control valve, and a rotatable jetting head, wherein the output end of the high-pressure air chamber is communicated with the input end of the flow control valve, the input end of the direction control valve is communicated with the output end of the flow control valve, and the input end of the rotatable jetting head is communicated with the output end of the direction control valve; The backpack stretcher further comprises a controller, a six-axis sensor, and a pressure sensor, and the controller is configured to perform the following steps: determining whether the pressure information is less than or equal to a preset water floating pressure threshold value; in response to determining that the pressure information is less than or equal to the preset water floating pressure threshold value, controlling each rotatable jetting head to rotate to a preset water floating rotation angle, and adjusting the rotation speed of each turbine fan to a preset water floating rotation speed; in response to determining that the pressure information is greater than the preset water floating pressure threshold value, obtaining the stretcher inclination information and the stretcher acceleration information detected by the six-axis sensor; generating jetting head rotation information according to the stretcher inclination information; controlling each rotatable jetting head to rotate according to the jetting head rotation information; generating a jetting amount information set corresponding to each rotatable jetting head according to the stretcher inclination information, the stretcher acceleration information, and the pressure information; controlling each circulating air extraction and jetting device to perform jetting operation according to the jetting amount information set corresponding to each rotatable jetting head.

2. The backpack stretcher of claim 1, wherein, The back of the backpack accommodating part is provided with a storage layer; When the bed surface extension part is in the storage state, the foldable cloth surface is folded and stored in the storage layer; The two sides of the storage layer are respectively provided with side edge connector storage bags, and in the state that the backpack main body is used as a backpack, the two side edge connectors are stored in the side edge connector storage bags.

3. The backpack stretcher of claim 2, wherein, The connection mode between the storage layer and the back of the backpack accommodating part is any one of the following: zipper connection, adhesive connection, buckle connection or magnetic attraction connection.

4. The backpack stretcher of claim 1, wherein, The at least one inflatable air bag includes an inflatable air bag located on the bed surface, an inflatable air bag located on the side surface and an inflatable air bag located on the head. The at least one inflatable air bag is provided with an inflation port, and the inflation port is provided with an overpressure protection valve. In the state that the at least two backpack main bodies are connected to form a stretcher, the inflation device is connected to the inflation port to inflate the at least one inflatable air bag.

5. The backpack stretcher of claim 1, wherein, The backpack stretcher further comprises a camera device, which comprises a camera and a processor. In the state that the at least two backpack main bodies are connected to form a stretcher, the camera device is arranged on the side of the stretcher.

6. The backpack stretcher of claim 5, wherein, In the state that the at least two backpack main bodies are connected to form a stretcher, a pair of proximity sensors is arranged on each pair of connected side edge connectors, and each pair of proximity sensors is in communication connection with the processor.

7. The backpack stretcher of claim 6, wherein, The camera device further comprises a rotating base, and in the state that the at least two backpack main bodies are connected to form a stretcher, the rotating base is fixed to the side of the stretcher, the camera is arranged above the rotating base, and the rotating base is used to drive the camera to rotate.

8. The backpack stretcher of claim 7, wherein, The processor is configured to perform the following steps: Obtain the connector distance information set sent by each pair of associated proximity sensors, wherein each pair of proximity sensors corresponds to a proximity sensor identifier, and each connector distance information corresponds to a pair of proximity sensors; Perform distance anomaly detection on the connector distance information set to determine whether the connector distance information set includes connector distance information representing distance anomaly; In response to determining that the connector distance information set includes connector distance information representing anomaly, determine the connector distance information representing distance anomaly in the connector distance information set as abnormal connector distance information to obtain an abnormal connector distance information set; For each abnormal connector distance information in the abnormal connector distance information set, perform the following steps: Determine the proximity sensor identifier corresponding to the abnormal connector distance information; Determine the rotation angle of the camera corresponding to the proximity sensor identifier; Control the camera to rotate according to the rotation angle; Collect a to-be-detected photo by the camera; Perform image preprocessing on the to-be-detected photo to obtain a preprocessed to-be-detected photo; Perform connector edge detection processing on the preprocessed to-be-detected photo to obtain connector edge information; Compare the connector edge information with normal connector edge information to obtain similarity information; Determine whether the similarity information meets a preset abnormal similarity condition; In response to determining that the similarity information meets a preset abnormal similarity condition, side connector abnormal alarm information is generated according to the proximity sensor identifier; According to the side connector abnormal alarm information, the associated alarm is controlled to perform an alarm operation.

9. The backpack stretcher of claim 8, wherein, The processor is further configured to perform the following steps: Human body detection is performed on the to-be-detected photo to obtain human body detection information; It is determined whether the human body detection information meets a preset human body skin missing degree condition; In response to determining that the human body detection information meets the preset human body skin missing degree condition, a human body to-be-processed region corresponding to the to-be-detected photo is determined according to the human body detection information; The to-be-processed region is subjected to a covering process.

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