Backpack type stretcher

Abstract

The embodiment of the invention discloses a backpack type stretcher. The knapsack type stretcher comprises at least two knapsack main bodies and an inflation device, wherein each knapsack main body comprises a knapsack accommodating part, a bed surface extension part and a connecting mechanism; the knapsack accommodating part is used for accommodating articles, the bed surface extension part comprises a foldable cloth cover, and when the bed surface extension part is in a storage state, the foldable cloth cover is folded and stored on the back surface of the knapsack accommodating part; each connecting mechanism comprises two side edge connecting pieces, the two side edge connecting pieces are fixed to the two sides of the bed surface extension part respectively in the state that the at least two backpack bodies are connected to form the stretcher, the ends of the two side edge connecting pieces are connected with the adjacent connecting mechanisms on the adjacent backpack bodies respectively, and the two side edge connecting pieces are connected with the adjacent connecting mechanisms on the adjacent backpack bodies in the state that the backpack bodies are used as the backpack. The two side edge connecting pieces are accommodated in the backpack accommodating part; the bed surface extension part comprises at least one inflatable airbag, and the inflating device is used for inflating the at least one inflatable airbag. The backpack type stretcher can improve the use convenience of a user.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to the technical field of stretchers, and more particularly to backpack stretchers. Background Art

[0002] A stretcher is a medical device for carrying the injured or sick, and is widely used in first aid, disaster relief, battlefield rescue and other scenarios. Most current stretchers are integrally designed. When carrying a stretcher, it is usually carried by two people walking with the stretcher.

[0003] However, the inventors have found that when carrying a stretcher in the above manner, the following technical problems often exist: To facilitate the patient's lying, the stretcher has a large volume, so the pressure of the stretcher is often heavy, and it is laborious for the user to carry, resulting in inconvenient use for the user.

[0004] The above information disclosed in this background art section is only used to enhance the understanding of the background of the inventive concept, and thus, it may include information that does not form the prior art known to those of ordinary skill in the art. Summary of the Invention

[0005] This content part of the present disclosure is used to briefly introduce concepts that will be described in detail in the subsequent detailed implementation part. This content part of the present disclosure is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0006] Some embodiments of the present disclosure provide a backpack stretcher to solve one or more of the technical problems mentioned in the above background art section.

[0007] In a first aspect, some embodiments of the present disclosure provide a backpack stretcher, which includes: at least two backpack bodies and an inflation device. For each of the at least two backpack bodies, the backpack body includes a backpack accommodation part, a bed surface extension part and a connection mechanism; the backpack accommodation part is used for accommodating items, the bed surface extension part includes a foldable cloth surface, and when the bed surface extension part is in a storage state, the foldable cloth surface is folded and stored on the back of the backpack accommodation part; the connection mechanism includes two side connectors. When the at least two backpack bodies are connected to form a stretcher, the two side connectors are respectively fixed on both sides of the bed surface extension part, and the ends of the two side connectors are respectively connected to the adjacent connection mechanisms on the adjacent backpack bodies. When the backpack body is used as a backpack, the two side connectors are stored in the backpack accommodation part; the bed surface extension part includes at least one inflatable airbag, and every two of the at least one inflatable airbags are communicated with each other, and the inflation device is used to inflate the at least one inflatable airbag.

[0008] Optionally, a storage layer is provided on the back surface of the above-mentioned backpack accommodation part; when the above-mentioned bed surface extension part is in the storage state, the above-mentioned foldable cloth surface is folded and stored in the above-mentioned storage layer; side connection part storage bags are respectively provided on both sides of the above-mentioned storage layer, and in the state where the backpack body is used as a backpack, the above-mentioned two side connection parts are stored in the side connection part storage bags.

[0009] Optionally, the connection method between the above-mentioned storage layer and the back surface of the above-mentioned backpack accommodation part is any one of the following: zipper connection, adhesive connection, snap connection or magnetic attraction connection.

[0010] Optionally, the above-mentioned at least one inflatable airbag includes an inflatable airbag located on the bed surface, an inflatable airbag located on the side surface and an inflatable airbag located at the head; the above-mentioned at least one inflatable airbag is provided with an inflation port, and the inflation port is provided with an overpressure protection valve. In the state where at least two backpack bodies are connected to form a stretcher, the above-mentioned inflation device is connected to the inflation port to inflate the above-mentioned at least one inflatable airbag.

[0011] Optionally, the above-mentioned backpack stretcher further includes at least one circulating air extraction and jetting device. In the state where at least two backpack bodies are connected to form a stretcher, the above-mentioned at least one circulating air extraction and jetting device is arranged at the bottom of the stretcher; each circulating air extraction and jetting device includes an air inlet, a filtering device, a turbine fan, a high-pressure air chamber and a jet outlet; the above-mentioned filtering device is arranged at the above-mentioned air inlet, the fan air inlet end of the above-mentioned turbine fan is communicated with the above-mentioned air inlet, the fan air outlet end of the above-mentioned turbine fan is communicated with the above-mentioned high-pressure air chamber, and the above-mentioned high-pressure air chamber is communicated with the above-mentioned jet outlet.

[0012] Optionally, the above-mentioned backpack stretcher further includes a camera device, and the above-mentioned camera device includes a camera and a processor; in the state where at least two backpack bodies are connected to form a stretcher, the above-mentioned camera device is arranged on the side of the stretcher.

[0013] Optionally, in the state where at least two backpack bodies are connected to form a stretcher, a pair of proximity sensors are arranged on each two connected side connection parts, and each pair of proximity sensors is communicatively connected to the above-mentioned processor.

[0014] Optionally, the above-mentioned camera device further includes a rotating base. In the state where at least two backpack bodies are connected to form a stretcher, the above-mentioned rotating base is fixed on the side of the stretcher, the above-mentioned camera is arranged above the above-mentioned rotating base, and the above-mentioned rotating base is used to drive the above-mentioned camera to rotate.

[0015] Optionally, the above-mentioned processor is configured to perform the following steps: obtain a set of connector distance information sent by each pair of associated proximity sensors, where 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 above-mentioned set of connector distance information to determine whether the above-mentioned set of connector distance information includes connector distance information characterizing a distance anomaly; in response to determining that the above-mentioned set of connector distance information includes connector distance information characterizing an anomaly, determine the connector distance information characterizing a distance anomaly in the above-mentioned set of connector distance information as abnormal connector distance information, obtaining a set of abnormal connector distance information; for each abnormal connector distance information in the set of abnormal connector distance information, perform the following steps: determine the proximity sensor identifier corresponding to the above-mentioned abnormal connector distance information; according to the above-mentioned proximity sensor identifier, determine the rotation angle corresponding to the above-mentioned camera; control the above-mentioned camera to rotate according to the above-mentioned rotation angle; collect a photo to be detected through the camera; perform image preprocessing on the above-mentioned photo to be detected, obtaining a preprocessed photo to be detected; perform connector edge detection processing on the above-mentioned preprocessed photo to be detected, obtaining connector edge information; compare the similarity between the above-mentioned connector edge information and normal connector edge information, obtaining similarity information; determine whether the above-mentioned similarity information meets a preset abnormal similarity condition; in response to determining that the above-mentioned similarity information meets the preset abnormal similarity condition, generate a side connector abnormal alarm information according to the above-mentioned proximity sensor identifier; control an associated alarm to perform an alarm operation according to the above-mentioned side connector abnormal alarm information.

[0016] Optionally, the above-mentioned processor is further configured to perform the following steps: perform human body detection on the above-mentioned photo to be detected, obtaining human body detection information; determine whether the above-mentioned human body detection information meets a preset human body skin exposure condition; in response to the above-mentioned human body detection information meeting the preset human body skin exposure condition, determine a human body area to be processed corresponding to the above-mentioned photo to be detected according to the above-mentioned human body detection information; perform a covering process on the above-mentioned area to be processed.

[0017] The above embodiments of the present disclosure have the following beneficial effects: The backpack stretcher according to some embodiments of the present disclosure can improve the convenience of use for users. Specifically, the reason for the inconvenience in use for users is that in order to facilitate the patient to lie down, the stretcher has a relatively large volume, so the pressure of the stretcher is often heavy, and it is laborious for the user to carry. Based on this, some embodiments of the backpack stretcher of the present disclosure include: at least two backpack bodies and an inflation device. Among them, for each of the at least two backpack bodies, the backpack body includes a backpack accommodation part, a bed surface extension part, and a connection mechanism; the backpack accommodation part is used for storing items, the bed surface extension part includes a foldable cloth surface, and when the bed surface extension part is in a storage state, the foldable cloth surface is folded and stored on the back of the backpack accommodation part; the connection mechanism includes two side connectors. When the at least two backpack bodies are connected to form a stretcher, the two side connectors are respectively fixed on both sides of the bed surface extension part, and the ends of the two side connectors are respectively connected to the adjacent connection mechanisms on the adjacent backpack bodies. When the backpack body is used as a backpack, the two side connectors are stored in the backpack accommodation part; the bed surface extension part includes at least one inflatable airbag, and every two of the at least one inflatable airbags are communicated with each other, and the inflation device is used to inflate the at least one inflatable airbag. Because the above backpack stretcher divides the stretcher into multiple parts and accommodates them in the backpack, and then assembles the multiple backpacks to form a stretcher during use, the pressure of the stretcher can be dispersed, which is convenient for the user to carry. Thus, the backpack stretcher can improve the convenience of use for users. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In combination with the accompanying drawings and with reference to the following specific embodiments, the above and other features, advantages, and aspects of the various embodiments of the present disclosure will become more apparent. Throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic, and the elements and elements are not necessarily drawn to scale.

[0019] Figure 1 is a schematic structural diagram of some embodiments of the backpack body of the backpack stretcher according to the present disclosure in a storage state; Figure 2 is a schematic structural diagram of some embodiments of the backpack body of the backpack stretcher according to the present disclosure in an unfolded state; Figure 3 is a schematic structural diagram of some embodiments of the backpack body of the backpack stretcher according to the present disclosure in a splicing state. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not used to limit the protection scope of the present disclosure.

[0021] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and defined, the terms "arranged" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific situations.

[0022] In addition, it should be noted that, for the convenience of description, only the parts related to the relevant disclosure are shown in the drawings. Without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other.

[0023] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence relationship of the functions performed by these devices, modules or units.

[0024] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise clearly specified in the context, it should be understood as "one or more".

[0025] The names of the messages or information exchanged between multiple devices in the embodiments of the present disclosure are only for illustrative purposes and are not used to limit the scope of these messages or information.

[0026] The present disclosure will be described in detail below with reference to the drawings and in combination with the embodiments.

[0027] Figure 1 It is a schematic structural diagram of some embodiments in which the backpack main body in the backpack stretcher according to the present disclosure is in a storage state. Figure 1 It includes a backpack main body 1. The above-mentioned backpack main body 1 includes a backpack accommodation part 11.

[0028] Figure 2 It is a schematic structural diagram of some embodiments in which the backpack main body in the backpack stretcher according to the present disclosure is in an unfolded state. Figure 2It includes a backpack main body 1. The above-mentioned backpack main body 1 includes a backpack accommodation part 11, a bed surface extension part 12 and a connection mechanism 13.

[0029] Figure 3 It is a schematic structural diagram of some embodiments in which the backpack main body of the backpack stretcher according to the present disclosure is in a spliced state. Figure 3 It includes a bed surface extension part 12 and a connection mechanism 13.

[0030] In some embodiments, the above-mentioned backpack stretcher may include at least two backpack main bodies (for example, the backpack main body 1) and an inflation device. Among them, for each of the at least two backpack main bodies, the backpack main body may include a backpack accommodation part 11, a bed surface extension part 12 and a connection mechanism 13. The above-mentioned backpack accommodation part 11 may be a compartment for the backpack to hold items. For example, the above-mentioned backpack accommodation part 11 may be used to store rescue supplies. The above-mentioned bed surface extension part 12 may be a cloth for unfolding to carry a patient. The above-mentioned connection mechanism 13 may be a telescopic rod. The above-mentioned connection mechanism 13 may be a lightweight aluminum alloy frame. The backpack main body can be made of high-strength and lightweight materials to ensure a certain structural strength when carrying the wounded, while reducing the load of the rescue personnel.

[0031] In some embodiments, the above-mentioned backpack accommodation part 11 can be used to store items. The above-mentioned bed surface extension part 12 includes a foldable cloth surface. The above-mentioned foldable cloth surface may be a high-strength waterproof nylon cloth. When the above-mentioned bed surface extension part 12 is in a stored state, the above-mentioned foldable cloth surface can be folded and stored on the back of the above-mentioned backpack accommodation part 11.

[0032] In some embodiments, the above-mentioned connection mechanism 13 may include two side connectors. Among them, the above-mentioned two side connectors may be two lightweight aluminum alloy telescopic rods. In the state where the at least two backpack main bodies are connected to form a stretcher, the above-mentioned two side connectors can be respectively fixed on both sides of the above-mentioned bed surface extension part 12. The ends of the above-mentioned two side connectors can be respectively connected to the adjacent connection mechanisms 13 on the adjacent backpack main bodies. Specifically, for each of the above-mentioned two side connectors, the end of the side connector can be connected to the adjacent side connector on the adjacent backpack main body. Here, the specific connection method between the side connectors is not limited. For example, the connection method between the side connectors can be a threaded connection. In the state where the backpack main body is used as a backpack, the above-mentioned two side connectors can be stored in the above-mentioned backpack accommodation part 11.

[0033] In some embodiments, the above-mentioned bed surface extension part 12 may include at least one inflatable airbag. Every two of the at least one inflatable airbags may be connected. The inflation device may be used to inflate the at least one inflatable airbag. In the state where the backpack body is used as a backpack, the inflation device may be placed in any backpack body. Thus, a uniform supporting force can be provided through the airbag to reduce the discomfort of the wounded, and in water rescue, the inflatable airbag can provide buoyancy to help the wounded float.

[0034] Optionally, a storage layer may be provided on the back surface of the above-mentioned backpack accommodation part 11. When the above-mentioned bed surface extension part 12 is in the storage state, the above-mentioned foldable cloth surface can be folded and stored in the storage layer. Side connector storage bags may be provided on both sides of the storage layer respectively. In the state where the backpack body is used as a backpack, the two side connectors may be stored in the side connector storage bags.

[0035] Optionally, the connection mode between the storage layer and the back surface of the above-mentioned backpack accommodation part 11 may be any one of the following: zipper connection, paste connection, buckle connection or magnetic attraction connection.

[0036] Optionally, drawstrings may be provided at all four ends of the above-mentioned foldable cloth surface. Thus, the above-mentioned foldable cloth surface can be quickly unfolded through the drawstrings. And adjacent backpack bodies can also be connected and fixed through the drawstrings.

[0037] 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. A soft support surface is formed by the inflatable airbag located on the bed surface, which can protect the patient's back. Inflatable airbags are designed on both sides of the stretcher. After inflation, it can prevent the wounded from slipping and provide additional buffer protection. An independent airbag is designed at the head position of the stretcher. After inflation, it can be used as a head support to protect the wounded's head. The above-mentioned inflation port may be provided with an overpressure protection valve. The above-mentioned overpressure protection valve may be an overpressure valve. The above-mentioned overpressure protection valve can protect the inflatable airbag. In the state where at least two backpack bodies are connected to form a stretcher, the inflation device may be connected to the inflation port to inflate the at least one inflatable airbag.

[0038] In the process of adopting technical solutions to solve the above-mentioned technical problems, there is often another technical problem 2 as follows: when using a stretcher to carry a patient, the stretcher cannot be disassembled, the pressure cannot be dispersed, and the pressure is still relatively heavy, resulting in inconvenient patient transportation. For the above-mentioned technical problem 2, the conventional solution is generally: adding pulleys under the stretcher and sliding the patient through the pulleys. However, the above-mentioned conventional solution still has the following problems: for some complex terrains, the pulleys cannot slide smoothly, but instead cause bumps and further harm to the patient.

[0039] Considering the problems of the above conventional solutions, in the face of the above technical problem 2: when using a stretcher to carry a patient, the stretcher cannot be disassembled, the pressure cannot be dispersed, and the pressure is still relatively heavy, resulting in inconvenient patient transportation. Combining the technical status quo, the following solution can be decided: Optionally, the above backpack stretcher may further include at least one circulating air extraction and jetting device. Here, the number of the circulating air extraction and jetting devices is not limited. As an example, the above backpack stretcher may include four circulating air extraction and jetting devices. The four circulating air extraction and jetting devices may be respectively arranged at the four corners of the above backpack stretcher. In the state where the above at least two backpack bodies are connected to form a stretcher, the above at least one circulating air extraction and jetting device may be arranged at the bottom of the stretcher. Each circulating air extraction and jetting device may include an air inlet, a filtering device, a turbo fan, a high-pressure air chamber, and an air jet. The above filtering device may be used to filter impurities in the air. The above turbo fan may be used to draw in external air and compress it, and at the same time eject high-pressure gas to generate thrust. The above high-pressure air chamber may be used to store the compressed high-pressure gas to provide a stable gas source for jetting. The above filtering device may be arranged at the above air inlet. The fan air inlet end of the above turbo fan may be communicated with the above air inlet. The fan air outlet end of the above turbo fan may be communicated with the above high-pressure air chamber. The above high-pressure air chamber may be communicated with the above air jet.

[0040] Optionally, each circulating air extraction and jetting device may further include a turbo generator and a storage battery. The above turbo generator is arranged on the circulating channel of the gas ejected from the above air jet. The above turbo generator is electrically connected to the above turbo fan and the above storage battery. The above turbo generator may be driven to generate electricity by the waste gas flow. The above storage battery may store the electricity generated by the above turbo generator and supply power to the above turbo fan.

[0041] Optionally, the above air jet is further provided with a flow control valve, a direction control valve, and a rotatable nozzle. Among them, the output end of the above high-pressure air chamber may be communicated with the input end of the above flow control valve. The input end of the above direction control valve may be communicated with the output end of the above flow control valve. The input end of the above rotatable nozzle may be communicated with the output end of the above direction control valve. The flow control valve may be used to adjust the gas flow rate and pressure of the nozzle. The above rotatable nozzle may be driven by a servo motor or a stepper motor. It supports horizontal (0 - 360°) and pitch (±30°) angle adjustment. The jet direction can be adjusted through the direction control valve and the rotatable nozzle to achieve multi-directional thrust.

[0042] Optionally, the above-mentioned backpack stretcher may further include a controller, a six-axis sensor, and a pressure sensor. Among them, the above-mentioned controller, the above-mentioned six-axis sensor, and the above-mentioned pressure sensor may all be disposed at the bottom of the stretcher. The above-mentioned six-axis sensor, the above-mentioned pressure sensor, and the above-mentioned circulating air extraction and jet device may all be connected to the above-mentioned controller.

[0043] The above-mentioned controller may be configured to perform the following steps: In the first step, obtain the pressure information detected by the above-mentioned pressure sensor. Among them, the above-mentioned pressure information may be information characterizing the pressure borne by the stretcher.

[0044] In the second step, determine whether the above-mentioned pressure information is less than or equal to a preset water floating pressure threshold. Among them, the above-mentioned preset water floating pressure threshold may be a preset threshold less than or equal to the threshold characterizing the pressure when the stretcher is on the water surface.

[0045] In the third step, in response to determining that the above-mentioned pressure information is less than or equal to the above-mentioned preset water floating pressure threshold, control each rotatable nozzle to rotate to a preset water floating rotation angle, and adjust the rotation speed of each turbo fan to a preset water floating rotation speed. Among them, the above-mentioned preset water floating rotation angle may be the angle adjusted by the rotatable nozzle when the stretcher is on the water surface. The above-mentioned preset water floating rotation speed may be the rotation speed adjusted by the turbo fan when the stretcher is on the water surface In the fourth step, in response to determining that the above-mentioned pressure information is greater than the above-mentioned preset water floating pressure threshold, obtain the stretcher inclination angle information and the stretcher acceleration information detected by the above-mentioned six-axis sensor. Among them, the above-mentioned stretcher inclination angle information may be information characterizing the inclination angle of the stretcher. The above-mentioned stretcher acceleration information may be information characterizing the moving acceleration of the stretcher.

[0046] In the fifth step, generate nozzle rotation information according to the above-mentioned stretcher inclination angle information. Among them, the above-mentioned nozzle rotation information may be information characterizing the rotation angle of the nozzle. In practice, according to the above-mentioned stretcher inclination angle information, the above-mentioned controller may generate nozzle rotation information through a PID (proportion integration differentiation) control algorithm.

[0047] In the sixth step, control each rotatable nozzle to rotate according to the above-mentioned nozzle rotation information. In practice, the above-mentioned controller may adjust each rotatable nozzle to the rotation angle corresponding to the above-mentioned nozzle rotation information.

[0048] Step 7: Generate a set of gas injection volume information corresponding to each rotatable nozzle based on the above stretcher inclination information, the above stretcher acceleration information, and the above pressure information. Each gas injection volume information in the above gas injection volume information set corresponds to a rotatable nozzle. The above gas injection volume information may be information characterizing the flow rate of the gas ejected from each nozzle. In practice, first, the above controller may input the above pressure information into a pre-trained basic gas injection volume information generation model to obtain basic gas injection volume information. The above basic gas injection volume information may characterize the basic flow rate of the gas ejected by each cyclic air extraction and injection device. The above basic gas injection volume information generation model may be a machine learning model pre-trained with pressure information as the input and basic gas injection volume information as the output. For example, the above basic gas injection volume information generation model may be a linear regression model. Then, the above controller may input the above stretcher inclination information and the above stretcher acceleration information into a pre-trained stretcher terrain information generation model to obtain stretcher terrain information. The above stretcher terrain information may be information characterizing the terrain situation where the stretcher is located. For example, the above stretcher terrain information may be information characterizing a flat road surface. The above stretcher terrain information may be information characterizing a 45° uphill slope. The above stretcher terrain information generation model may be a machine learning model pre-trained with stretcher inclination information and stretcher acceleration information as the input and stretcher terrain information as the output. For example, the above stretcher terrain information generation model may be a random forest model. After that, the above controller may screen out a preset stretcher terrain resistance compensation information set corresponding to the above stretcher terrain information from a preset stretcher terrain resistance compensation information set configuration table as the target stretcher terrain resistance compensation information set. The above preset stretcher terrain resistance compensation information set configuration table may be a pre-set relationship table between the stretcher terrain resistance compensation information sets corresponding to each cyclic air extraction and injection device and the stretcher terrain information. The above preset stretcher terrain resistance compensation information may be information characterizing the additional gas injection volume required for each cyclic air extraction and injection device. As an example, when the stretcher terrain information characterizes a flat road surface, the above preset stretcher terrain resistance compensation information may be an information set characterizing that the additional gas injection volume required for each cyclic air extraction and injection device is the basic gas injection volume. When the stretcher terrain information characterizes a 45° uphill slope, the above preset stretcher terrain resistance compensation information set may characterize that the additional gas injection volume required for the cyclic air extraction and injection device at the rear end is the basic gas injection volume plus 30% of the basic gas injection volume, and the additional gas injection volume required for the cyclic air extraction and injection device at the front end is the basic gas injection volume minus 30% of the basic gas injection volume. Finally, the above controller may generate a set of gas injection volume information corresponding to each rotatable nozzle based on the above basic gas injection volume information and the above target stretcher terrain resistance compensation information set. As an example, when the stretcher terrain information characterizes a flat road surface, each gas injection volume information in the above gas injection volume information set may be the above basic gas injection volume information.When the stretcher terrain information characterizes a 45° uphill slope, the air injection volume information corresponding to each cyclic air extraction and injection device at the rear end is 130% of the above basic air injection volume information, and the air injection volume information corresponding to each cyclic air extraction and injection device at the front end is 70% of the above basic air injection volume information.

[0049] Step 8: Control each cyclic air extraction and injection device to perform an air injection operation according to the air injection volume information set corresponding to each rotatable nozzle.

[0050] The above - mentioned related content about the rotation mode, as an inventive point of an embodiment of the present disclosure, solves the second technical problem: "When using a stretcher to carry a patient, the stretcher cannot be disassembled, the pressure cannot be dispersed, and the pressure is still relatively heavy, resulting in inconvenient patient transportation." The reasons for the inconvenient patient transportation are as follows: When using a stretcher to carry a patient, the stretcher cannot be disassembled, the pressure cannot be dispersed, and the pressure is still relatively heavy. If the above - mentioned factors are solved, the convenience of patient transportation can be improved. To achieve this effect, the backpack - type stretcher of the present disclosure includes at least one circulating air - extraction and jetting device. In the state where the above - mentioned at least two backpack bodies are connected to form a stretcher, the above - mentioned at least one circulating air - extraction and jetting device can be arranged at the bottom of the stretcher. Each circulating air - extraction and jetting device includes an air inlet, a filtering device, a turbo - fan, a high - pressure air chamber, and a jet outlet. The above - mentioned filtering device is arranged at the above - mentioned air inlet. The fan air - inlet end of the above - mentioned turbo - fan is communicated with the above - mentioned air inlet. The fan air - outlet end of the above - mentioned turbo - fan is communicated with the above - mentioned high - pressure air chamber. The above - mentioned high - pressure air chamber is communicated with the above - mentioned jet outlet. Each circulating air - extraction and jetting device further includes a turbo - generator and a storage battery. The above - mentioned turbo - generator is arranged on the circulating channel of the gas jetted out from the above - mentioned jet outlet. The above - mentioned turbo - generator is electrically connected to the above - mentioned turbo - fan and the above - mentioned storage battery. The above - mentioned jet outlet is further provided with a flow control valve, a direction control valve, and a rotatable nozzle. Among them, the output end of the above - mentioned high - pressure air chamber is communicated with the input end of the above - mentioned flow control valve. The input end of the above - mentioned direction control valve is communicated with the output end of the above - mentioned flow control valve. The input end of the above - mentioned rotatable nozzle is communicated with the output end of the above - mentioned direction control valve. The above - mentioned backpack - type stretcher further includes a controller, a six - axis sensor, and a pressure sensor. Among them, the above - mentioned controller, the above - mentioned six - axis sensor, and the above - mentioned pressure sensor can all be arranged at the bottom of the stretcher. The above - mentioned six - axis sensor, the above - mentioned pressure sensor, and the above - mentioned circulating air - extraction and jetting device are all connected to the above - mentioned controller. The controller is configured to perform the following steps: Obtain the pressure information detected by the above - mentioned pressure sensor. Determine whether the above - mentioned pressure information is less than or equal to a preset water - floating pressure threshold. In response to determining that the above - mentioned pressure information is less than or equal to the above - mentioned preset water - floating pressure threshold, control each rotatable nozzle to rotate to a preset water - floating rotation angle, and adjust the rotation speed of each turbo - fan to a preset water - floating rotation speed. In response to determining that the above - mentioned pressure information is greater than the above - mentioned preset water - floating pressure threshold, obtain the stretcher inclination information and stretcher acceleration information detected by the above - mentioned six - axis sensor. Generate nozzle rotation information according to the above - mentioned stretcher inclination information. Control each rotatable nozzle to rotate according to the above - mentioned nozzle rotation information. Generate a set of jet volume information corresponding to each rotatable nozzle according to the above - mentioned stretcher inclination information, the above - mentioned stretcher acceleration information, and the above - mentioned pressure information. Control each circulating air - extraction and jetting device to perform a jetting operation according to the set of jet volume information corresponding to each rotatable nozzle. Thus, the above - mentioned backpack - type stretcher adds multiple circulating air - extraction and jetting devices and also adds a controller, a six - axis sensor, and a pressure sensor.The pressure currently borne by the stretcher is detected by a pressure sensor. Whether the stretcher is on water is determined based on the pressure. When it is determined that the stretcher is on water, a smaller amount of jet air is provided to only maintain balance. When it is determined that the stretcher is not on water, the angle and acceleration of the stretcher are detected by a six-axis sensor to determine the jet air direction of the rotatable nozzles. And based on the detected angle and acceleration of the stretcher, the nature of the stretcher's location is determined. The jet air volume of each rotatable nozzle is determined according to the terrain and pressure, so that different jet air directions and volumes can be provided according to different terrains, making it easier for rescuers to drag the stretcher in various terrains, improving the convenience of patient transportation, and increasing the speed and efficiency of rescue operations.

[0051] Optionally, the above-mentioned backpack stretcher may further include a camera device. The above-mentioned camera device may include a camera and a processor. Among them, the above-mentioned processor may be a central processing unit. In the state where the above-mentioned at least two backpack bodies are connected to form a stretcher, the above-mentioned camera device may be arranged on the side of the stretcher.

[0052] Optionally, in the state where the above-mentioned at least two backpack bodies are connected to form a stretcher, a pair of proximity sensors may be arranged on each two connected side connectors. Each pair of proximity sensors may be communicatively connected to the above-mentioned processor. Each pair of proximity sensors may be used to detect whether the distance between the two connected side connectors has changed.

[0053] Optionally, the above-mentioned camera device may further include a rotating base. In the state where the above-mentioned at least two backpack bodies are connected to form a stretcher. The above-mentioned rotating base may be fixed to the side of the stretcher, and the above-mentioned camera may be arranged above the above-mentioned rotating base. The above-mentioned rotating base may be used to drive the above-mentioned camera to rotate.

[0054] Optionally, the above-mentioned processor may be configured to perform the following steps: First step, obtain a set of connector distance information sent by each pair of associated proximity sensors. Among them, each pair of proximity sensors corresponds to a proximity sensor identifier, and each connector distance information corresponds to a pair of proximity sensors. Among them, the above-mentioned connector distance information may represent the distance between the two connected side connectors. Each proximity sensor identifier may be a unique representation of a pair of proximity sensors.

[0055] Second, perform distance anomaly detection on the above connection component distance information set to determine whether the connection component distance information set includes connection component distance information characterizing distance anomalies. In practice, for each connection component distance information in the connection component distance information set, the above processor may determine the absolute value of the distance difference between the connection component distance information and the standard connection component distance information. In response to determining that the absolute value of the distance difference corresponding to any connection component distance information is greater than or equal to the preset difference absolute value threshold, determine the above any connection component distance information as the connection component distance information characterizing distance anomalies.

[0056] Third, in response to determining that the connection component distance information set includes connection component distance information characterizing anomalies, determine the connection component distance information characterizing distance anomalies in the connection component distance information set as abnormal connection component distance information, and obtain an abnormal connection component distance information set.

[0057] Fourth, for each abnormal connection component distance information in the abnormal connection component distance information set, perform the following steps: First, determine the proximity sensor identifier corresponding to the above abnormal connection component distance information.

[0058] Second, according to the above proximity sensor identifier, determine the rotation angle corresponding to the above camera. In practice, first, the above processor may determine the positions of the pair of proximity sensors corresponding to the proximity sensor identifier. Then, the above processor may determine the rotation angle corresponding to the above camera based on the positions of the pair of proximity sensors. Among them, different pairs of proximity sensors may correspond to different rotation angles. The rotation angle corresponding to each pair of proximity sensors is preset.

[0059] Third, control the above camera to rotate according to the above rotation angle. In practice, the above processor may rotate the above camera to the above rotation angle.

[0060] Fourth, collect a photo to be detected through the camera. In practice, the above processor may control the above camera to take a picture to obtain a photo to be detected.

[0061] Fifth, perform image preprocessing on the above photo to be detected to obtain a preprocessed photo to be detected. In practice, the above processor may perform image denoising processing on the above photo to be detected through an image denoising algorithm to obtain a preprocessed photo to be detected. The above image denoising algorithm may include at least one of the following: mean filtering, median filtering, or Gaussian filtering.

[0062] Sixth, perform edge detection processing on the photo to be detected after the above preprocessing to obtain the edge information of the connecting piece. In practice, the above processor can perform edge detection processing on the photo to be detected after the above preprocessing through an edge detection algorithm to obtain the edge information of the connecting piece. The above edge detection algorithm can include at least one of the following: Sobel operator, Prewitt operator, or Canny edge detection.

[0063] Seventh, compare the similarity between the above edge information of the connecting piece and the edge information of a normal connecting piece to obtain similarity information. In practice, the above processor can compare the similarity between the above edge information of the connecting piece and the edge information of a normal connecting piece through a similarity comparison algorithm to obtain similarity information. The above similarity comparison algorithm can include at least one of the following: cosine similarity, mean square error, or Euclidean distance.

[0064] Eighth, determine whether the above similarity information meets a preset abnormal similarity condition. Among them, the above preset abnormal similarity condition can be that the above similarity information is greater than or equal to a preset similarity threshold.

[0065] Ninth, in response to determining that the above similarity information meets the above preset abnormal similarity condition, generate an abnormal alarm message for the side connecting piece according to the above proximity sensor identifier. In practice, the above processor can splice the above proximity sensor identifier with a preset abnormal alarm template for the side connecting piece to obtain an abnormal alarm message for the side connecting piece. Among them, the above preset abnormal alarm template for the side connecting piece can be "Abnormal, please check". The blank is used to fill in the above proximity sensor identifier.

[0066] Tenth, control the associated alarm to perform an alarm operation according to the above abnormal alarm message for the side connecting piece. Among them, the above alarm can be an audible and visual alarm. In practice, the above processor can control the above alarm to play the above abnormal alarm message for the side connecting piece.

[0067] Thus, through the proximity sensor, the connection condition of the side connecting piece can be initially checked. When an abnormality occurs in the initial check, the side connecting piece with the abnormality is further detected through the camera. When an abnormality is found during the further detection process, an alarm is given to prompt the user to adjust the connection mechanism, thereby improving the use safety of the stretcher.

[0068] Optionally, the above processor can also be configured to perform the following steps: First step, perform human body detection on the above photo to be detected to obtain human body detection information. Among them, the above human body detection information can be information characterizing the range of the skin area. In practice, the above processor can perform human body detection on the above photo to be detected through a skin color detection algorithm to obtain human body detection information.

[0069] Second step, determine whether the above-mentioned human body detection information meets the preset human body skin exposure condition. Among them, the above-mentioned human body skin exposure condition can be that the skin area range represented by the above-mentioned human body detection information is greater than or equal to the preset skin area range.

[0070] Third step, in response to determining that the above-mentioned human body detection information meets the preset human body skin exposure condition, determine the human body area to be processed corresponding to the photo to be detected according to the above-mentioned human body detection information. In practice, the above-mentioned processor can determine the skin area represented by the above-mentioned human body detection information as the human body area to be processed.

[0071] Fourth step, perform a covering process on the above-mentioned area to be processed. In practice, the above-mentioned processor can perform a blurring process on the above-mentioned area to be processed. Thus, when collecting photos, the privacy parts of the patient can be protected, and the safety of the patient can be improved.

[0072] The above-mentioned various embodiments of the present disclosure have the following beneficial effects: The backpack stretcher according to some embodiments of the present disclosure can improve the convenience of use for users. Specifically, the reason for the inconvenience in use by users is that in order to facilitate the patient to lie down, the stretcher has a large volume, so the pressure of the stretcher is often heavy, and it is laborious for the user to carry. Based on this, some embodiments of the backpack stretcher of the present disclosure include: at least two backpack bodies and an inflation device. Among them, for each of the at least two backpack bodies, the backpack body includes a backpack accommodation part, a bed surface extension part, and a connection mechanism; the above-mentioned backpack accommodation part is used to accommodate items, the above-mentioned bed surface extension part includes a foldable cloth surface, and when the above-mentioned bed surface extension part is in a stored state, the above-mentioned foldable cloth surface is folded and stored on the back of the above-mentioned backpack accommodation part; the above-mentioned connection mechanism includes two side connection parts, and when the at least two backpack bodies are connected to form a stretcher, the two side connection parts are respectively fixed on both sides of the above-mentioned bed surface extension part, and the end parts of the two side connection parts are respectively connected to the adjacent connection mechanisms on the adjacent backpack bodies. When the backpack body is used as a backpack, the two side connection parts are stored in the above-mentioned backpack accommodation part; the above-mentioned bed surface extension part includes at least one inflatable airbag, and every two of the at least one inflatable airbags are communicated with each other, and the above-mentioned inflation device is used to inflate the at least one inflatable airbag. Because the above-mentioned backpack stretcher divides the stretcher into multiple parts and accommodates them in the backpack, and then splices the multiple backpacks to form a stretcher during use, the pressure of the stretcher can be dispersed, which is convenient for users to carry. Thus, the backpack stretcher can improve the convenience of use for users.

[0073] The above description is only some preferred embodiments of the present disclosure and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) disclosed in the embodiments of the present disclosure that have similar functions.

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 includes a backpack accommodation part, a bed surface extension part, and a connection mechanism; The backpack accommodation part is used for accommodating items. The bed surface extension part includes a foldable cloth surface. When the bed surface extension part is in a stored state, the foldable cloth surface is folded and stored on the back of the backpack accommodation part; The connection mechanism includes two side connectors. When the at least two backpack bodies are connected to form a stretcher, the two side connectors are respectively fixed on both sides of the bed surface extension part, and the ends of the two side connectors are respectively connected to the adjacent connection mechanisms on the adjacent backpack bodies. When the backpack body is used as a backpack, the two side connectors are stored in the backpack accommodation part; The bed surface extension part includes at least one inflatable airbag. Every two of the at least one inflatable airbag are communicated with each other, and an inflation device is used to inflate the at least one inflatable airbag.

2. The backpack stretcher according to claim 1, wherein, A storage layer is provided on the back of the backpack accommodation part; When the bed surface extension part is in a stored state, the foldable cloth surface is folded and stored in the storage layer; Side connector storage bags are respectively provided on both sides of the storage layer. When the backpack body is used as a backpack, the two side connectors are stored in the side connector storage bags.

3. The backpack stretcher according to claim 2, wherein, The connection manner between the storage layer and the back of the backpack accommodation part is any one of the following: zipper connection, paste connection, buckle connection, or magnetic attraction connection.

4. The backpack stretcher according to claim 1, wherein, 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, and the inflation port is provided with an overpressure protection valve. 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.

5. The backpack stretcher according to claim 1, wherein, The backpack stretcher further includes at least one circulating air extraction and jetting device. When the at least two backpack bodies are connected to form a stretcher, the at least one circulating air extraction and jetting device is arranged at the bottom of the stretcher; Each circulating air extraction and jetting device includes an air inlet, a filtering device, a turbo fan, a high-pressure air chamber, and an air jet port; The filtering device is arranged at the air inlet. The fan air inlet end of the turbo fan is communicated with the air inlet, the fan air outlet end of the turbo fan is communicated with the high-pressure air chamber, and the high-pressure air chamber is communicated with the air jet port.

6. The backpack stretcher according to claim 1, wherein, The backpack stretcher further includes a camera device, and the camera device includes a camera and a processor; When the at least two backpack bodies are connected to form a stretcher, the camera device is arranged on the side of the stretcher.

7. The backpack stretcher according to claim 6, wherein, When the at least two backpack bodies are connected to form a stretcher, a pair of proximity sensors are arranged on each two connected side connectors, and each pair of proximity sensors is communicatively connected to the processor.

8. The backpack stretcher according to claim 7, wherein, 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 on 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.

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

10. The backpack stretcher according to claim 9, wherein, The processor is further configured to perform the following steps: Perform human body detection on the photo to be detected, obtaining human body detection information; Determine whether the human body detection information meets a preset human body skin exposure condition; In response to determining that the human body detection information meets the preset human body skin exposure condition, determine a human body area to be processed corresponding to the photo to be detected according to the human body detection information; Perform a covering process on the area to be processed.

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