Breathing simulation device and automobile cabin detection equipment

Abstract

The embodiment of the utility model discloses a breathing simulation device and automobile cabin detection equipment, and relates to the technical field of automobile intelligent cabin testing. The breathing simulation device comprises a model body, a pulmonary sac, a reflecting plate, an air pump assembly and a control module. The lung sac is arranged in the model body; the reflecting plate abuts against one face of the pulmonary sac and can float along with the change of the air volume in the pulmonary sac. The air pump assembly is connected with the lung bag so as to change the internal air volume. The control module is electrically connected with the air pump assembly and used for controlling the working state of the air pump assembly. The reflecting plate reflects the contact area when the lung sac jacks up the chest, and the air volume in the lung sac affects the jacking height of the reflecting plate, so that the fluctuation degree of the chest is affected, and the performance of an automobile product can be verified in a subsequent test experiment.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile intelligent cockpit testing, in particular to a breathing simulation device and automobile cockpit testing equipment. Background Art

[0002] At present, the in-vehicle liveness detection function has attracted the attention of many automobile safety testing agencies, especially the child abandonment detection function, which has been included in the safety bonus items by many agencies.

[0003] The European New Car Assessment Programme (Euro NCAP) proposed that "cars that use direct detection methods have higher safety scores", such as camera solutions, WIFI solutions, and radar solutions. Among them, the radar solution realizes the child presence detection function by detecting the micro-movement of living things in the cabin. The development of this function requires test subjects of different ages, such as infants, children, and adults. NCAP mentioned that the use of humans for testing must comply with relevant ethical and privacy regulations. At the same time, the Child Presence Detection (CPD) and Seat Belt Reminder and Seat Occupant Detection (SBR) systems need to be tested for repeatability. Other vital signs of the human body other than breathing are unstable, especially children are not easy to follow the given instructions during the test, and it is impossible to control a single variable and verify the performance of the product during the development test process.

[0004] At present, the research on breathing simulators is mainly focused on auxiliary medical equipment, such as ventilators and cardiopulmonary resuscitation models. Ventilators rely on air pressure differences to complete the gas exchange between the user's alveoli and the outside world, and cardiopulmonary resuscitation models can only simulate the chest rise and fall effect, with a single function. The breathing simulation device in the car cabin needs to be integrated into the dummy model to simulate the movement of the chest cavity when people of different ages breathe. The above auxiliary medical equipment cannot meet the requirements of CPD and SBR functional test tools, and cannot fully display the degree of chest rise and fall during the simulation process. Summary of the invention

[0005] In view of the above shortcomings of the prior art, the purpose of the utility model is to provide a breathing simulation device and an automobile cabin detection equipment. The breathing simulation device ensures the floating area of ​​the chest cavity during simulated breathing through the setting of a reflective plate, so that the change of the air volume inside the lung sac can be intuitively realized by changing the floating state of the reflective plate, so as to achieve the purpose of simulating the degree of chest cavity fluctuation, which is beneficial to subsequent test experiments to verify the performance of the product.

[0006] The utility model embodiment discloses a breathing simulation device, which includes a model body, a lung sac, a reflective plate, an air pump assembly and a control module; the lung sac is arranged in the model body; the reflective plate and one side of the lung sac are in contact with each other, and can float following the change of the internal air volume of the lung sac; the air pump assembly and the lung sac are connected to each other for changing the internal air volume; the control module is electrically connected to the air pump assembly and is used to control the working state of the air pump assembly.

[0007] Furthermore, the breathing simulation device also includes a support rod and a support plate, the model body has a receiving groove, one end of the support rod is connected to the receiving groove, and the other end is connected to the support plate, and a side of the support plate away from the support rod is in contact with the lung sac; wherein the support rod can be extended and retracted along its own axial direction to drive the lung sac away from or close to the receiving groove through the support plate.

[0008] Furthermore, the breathing simulation device also includes a simulated skin component, which is arranged on the surface of the model body.

[0009] Furthermore, the simulated skin component includes a simulated skin layer and a reflective layer, the reflective layer is located between the model body and the simulated skin layer, and the conductivity of the reflective layer is higher than the conductivity of the simulated skin layer.

[0010] Furthermore, the reflective layer includes a tin foil layer.

[0011] Furthermore, the air pump assembly includes a first air pump, a second air pump and an adapter, and the adapter is respectively connected to the lung sac, the air outlet of the first air pump and the air inlet of the second air pump; when the lung sac is in an inhalation state, the control module controls the first air pump to work, and the fluid is filled into the lung sac through the air outlet of the first air pump; when the lung sac is in an exhalation state, the control module controls the second air pump to work, and the fluid is discharged from the lung sac through the air inlet of the second air pump.

[0012] Furthermore, the first air pump is connected to the adapter through a first air pipe, and the second air pump is connected to the adapter through a second air pipe.

[0013] Furthermore, the control module includes a control board and two relays, the output end of the control board is electrically connected to the input ends of the two relays respectively, and the output ends of the two relays are electrically connected to the control end of the first air pump and the control end of the second air pump respectively.

[0014] Furthermore, the control module can control the number of inflations and deflations of the air pump assembly to simulate the number of breathings of the lung sac; the control module can also control the inflation volume and exhaust volume of the air pump assembly to simulate the degree of fluctuation of the lung sac; the control module can also control the inflation time and deflation time of the air pump assembly to simulate the breathing time of the lung sac.

[0015] Furthermore, the control module can also generate adult mode, child mode and infant mode by controlling the air pump component, wherein the breathing frequency corresponding to the adult mode is smaller than the breathing frequency corresponding to the child mode, and the breathing frequency corresponding to the child mode is smaller than the breathing frequency corresponding to the infant mode, and the breathing frequency is used to characterize the number of breaths within a preset breathing time; the exhaust volume corresponding to the adult mode is greater than the exhaust volume of the child mode, and the exhaust volume of the child mode is greater than the exhaust volume of the infant mode.

[0016] The embodiment of the utility model also discloses a vehicle cabin detection device, comprising the above-mentioned breathing simulation device.

[0017] The breathing simulation device provided by the utility model has the following beneficial effects, including but not limited to:

[0018] 1) The breathing simulation device ensures the floating area of ​​the chest cavity during simulated breathing by setting the reflector, so that the change of the air volume inside the lung sac can be intuitively changed by changing the floating state of the reflector, so as to achieve the purpose of simulating the degree of chest cavity fluctuation, which is beneficial to the subsequent test experiment to verify the performance of the automobile product;

[0019] 2) In the breathing simulation device, the surface of the model body is covered with a simulated skin layer, and the inside of the simulated skin layer is paved with a high-conductivity reflective layer, which can enhance the reflection effect of the signal, thereby facilitating the radar to detect different breathing patterns in the breathing simulation device, thereby making it easier to verify the performance of the automotive product;

[0020] 3) The control module in the breathing simulation device can support remote control and can select multiple working modes (i.e., adult mode, child mode and infant mode), which can improve the integration of the breathing simulation device, enable the breathing simulation device to simulate different breathing frequencies, and improve the versatility of the breathing simulation device when used in automobile inspection, so that it can be applied to various different inspection conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] This specification will be further described in the form of exemplary embodiments, which will be described in detail by the accompanying drawings. These embodiments are not restrictive, and in these embodiments, the same number represents the same structure, wherein:

[0022] Figure 1 A schematic diagram of the structure of a breathing simulation device provided by an embodiment of the utility model;

[0023] Figure 2 Another structural schematic diagram of a breathing simulation device provided by an embodiment of the utility model;

[0024] Figure 3 A schematic diagram of the working process of the breathing simulation device provided in an embodiment of the utility model.

[0025] Icon: 100-breathing simulation device; 10-lung sac; 11-reflection plate; 121-support rod; 122-support plate; 13-control module. DETAILED DESCRIPTION

[0026] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0027] It should be noted that the illustrations provided in the following embodiments are only used to schematically illustrate the basic concept of the present invention, and thus the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0028] Please refer to Figure 1 and Figure 2 The utility model provides a breathing simulation device 100, which includes a model body (not shown in the figure), a lung sac 10, a reflecting plate 11, an air pump assembly and a control module 13; the lung sac 10 is arranged in the model body; the reflecting plate 11 is in contact with one side of the lung sac 10, and can float with the change of the internal air volume of the lung sac 10; the air pump assembly and the lung sac 10 are connected to each other to change the internal air volume; the control module 13 is electrically connected to the air pump assembly, and is used to control the working state of the air pump assembly.

[0029] It is worth noting that if Figure 1 As shown, a reflector 11 matching the size of the chest cavity is fixed on the upper layer of the lung sac 10. The reflector 11 reflects the contact area when the lung sac 10 pushes up the chest cavity. The size of the air volume inside the lung sac 10 affects the height of the reflector 11, thereby affecting the degree of ups and downs of the chest cavity, which is beneficial to subsequent test experiments to verify the performance of the automobile product. It is understandable that the reflector 11 can be made of a high-conductivity material to enhance the emission of radar electromagnetic waves, which is beneficial to detecting the breathing state of the breathing simulation device 100.

[0030] Please refer again Figure 2The breathing simulation device 100 also includes a support rod 121 and a support plate 122. The model body has a receiving groove. One end of the support rod 121 is connected to the receiving groove, and the other end is connected to the support plate 122. The side of the support plate 122 away from the support rod 121 is in contact with the lung sac 10; wherein the support rod 121 can be extended and retracted along its own axial direction to drive the lung sac 10 away from or close to the receiving groove through the support plate 122.

[0031] It is worth mentioning that a support rod 121 with an adjustable mounting height is fixed on the inner side of the accommodating groove (i.e., the back of the model body), and a support plate 122 is fixed on the other side of the support rod 121. The length of the support rod 121 affects the distance between the support plate 122 and the back in the chest cavity, thereby affecting the range of motion of the chest cavity, so as to realize the simulation of chest fluctuations for different groups (adults, children and infants), thereby improving the versatility of the breathing simulation device 100 in automobile inspection and making it applicable to various different inspection conditions.

[0032] It is also worth noting that the support rod 121 in this embodiment can be a hydraulic rod or a travel switch that can be extended and retracted along its own axis, and it can select a structure in the relevant technology to achieve the purpose of being able to retract and retract. In this embodiment, the structural type of the support rod 121 will not be described in detail.

[0033] In the present embodiment, the breathing simulation device 100 also includes a simulated skin component, which is arranged on the surface of the model body. It is understandable that the model body in the present embodiment can use a child model shell made of polyvinyl chloride (PVC) material, remove the hard PVC material on the surface of the model chest cavity, and the interior is hollow for installing other movable parts (for example, lung sac 10, reflection pump and air pump assembly, etc.), and the surface is fixed with a simulated skin component made by a vinyl process. The simulated skin component can simulate the transmission ability of human skin to radar signals to a certain extent.

[0034] In this embodiment, the simulated skin component includes a simulated skin layer and a reflective layer. The reflective layer is located between the model body and the simulated skin layer, and the conductivity of the reflective layer is higher than the conductivity of the simulated skin layer.

[0035] It is worth noting that experiments have shown that the simulated skin layer similar to human skin can be penetrated by radar electromagnetic waves, so a reflective layer is laid inside the simulated skin layer to enhance the reflection of the radar electromagnetic waves by the breathing simulation device 100, thereby facilitating the radar to detect different breathing patterns in the breathing simulation device 100, thereby more conveniently verifying the performance of the automotive product. It is understandable that the reflective layer in this embodiment can be a tin foil layer, and other high conductivity materials, such as an aluminum foil layer, can also be used depending on the specific implementation environment.

[0036] Please refer again Figure 1 The air pump assembly includes a first air pump, a second air pump and an adapter, and the adapter is respectively connected to the lung bag 10, the air outlet of the first air pump and the air inlet of the second air pump; when the lung bag 10 is in an inhalation state, the control module 13 controls the first air pump to work, and the fluid is filled into the lung bag 10 through the air outlet of the first air pump; when the lung bag 10 is in an exhalation state, the control module 13 controls the second air pump to work, and the fluid is discharged from the lung bag 10 through the air inlet of the second air pump.

[0037] Specifically, the first air pump is connected to the adapter through the first air pipe, and the second air pump is connected to the adapter through the second air pipe. It can be understood that the first air pipe is connected to the second air pipe, which makes it easier to arrange the positions of the air pumps and the adapter, and avoids the phenomenon that the first air pump, the adapter and the second air pump are crowded together.

[0038] It is worth noting that if Figure 1 As shown, the first air pump (i.e., air pump 1 in the figure) and the second air pump (i.e., air pump 2 in the figure) can be a 12V micro DC vacuum pump with one inlet and one outlet, and the lung sac 10 is connected to a two-part adapter through a trachea, and one of the other two interfaces of the adapter is connected to the air outlet of the DC air pump as an air inlet, and the other interface is connected to the air inlet of the DC air pump as an air outlet. When the lung sac 10 is in the inhalation state, the gas enters the pump body from the air inlet of the first air pump, and enters the lung sac 10 through the air outlet, the first trachea (i.e., the trachea 1 in the figure), and the adapter, the lung sac 10 expands, and the reflector 11 floats to the outside of the chest cavity. At this time, the air inlet of the second air pump is closed. When the lung sac 10 is in the exhalation state, the gas flows to the air inlet of the second air pump through the trachea, the adapter, and the second trachea (i.e., the trachea 2 in the figure), and is discharged through the air outlet of the second air pump. The lung sac 10 contracts and the reflective plate 11 moves toward the inside of the chest cavity. At this time, the air outlet of the first air pump is closed.

[0039] Please refer to Figure 1 and Figure 3 The control module 13 includes a control board and two relays, the output end of the control board is electrically connected to the input ends of the two relays, and the output ends of the two relays are electrically connected to the control end of the first air pump and the control end of the second air pump.

[0040] Specifically, the control module 13 in the present embodiment can select ESP01WIFI and two-way relay module, ESP01WIFI is used as control board, input voltage 12V, and output terminal is connected to two relays. The air pump has two terminals, one terminal is grounded, and the other terminal is connected to the collector of the control board. When the device is enabled, start the mobile phone hotspot, open the mobile phone APP, and connect the ESP01WIFI. The module uploads the hardware status, monitors the mobile phone host computer button at the same time, and controls the switch state of the relay pin according to the mobile phone button instruction. The mobile phone APP adopts the application interface in the relevant technology, adds the Debug information window and three control buttons on the APP page, and the Debug information window records the working state of the mobile phone instruction and the control unit that have been sent. The three buttons on the interface represent the three breathing modes of adults, children, and infants respectively. The three modes of the mobile phone end can change the fluctuation degree, breathing simulation time and breathing simulation number of the breathing simulator, realize the multiple mode switching of the breathing simulator during the test, and avoid the interference of the artificial control button.

[0041] It can be understood that the three breathing modes of adults, children and infants mentioned above are mainly achieved in the following ways: the control module 13 can control the inflation and deflation times of the air pump assembly to simulate the breathing times of the lung sac 10; the control module 13 can also control the inflation volume and exhaust volume of the air pump assembly to simulate the fluctuation degree of the lung sac 10; the control module 13 can also control the inflation time and deflation time of the air pump assembly to simulate the breathing time of the lung sac 10.

[0042] In this embodiment, the breathing frequency corresponding to the adult mode is less than the breathing frequency corresponding to the child mode, and the breathing frequency corresponding to the child mode is less than the breathing frequency corresponding to the infant mode. The breathing frequency is used to represent the number of breaths within a preset breathing time; the exhaust volume corresponding to the adult mode is greater than the exhaust volume of the child mode, and the exhaust volume of the child mode is greater than the exhaust volume of the infant mode. It can be understood that the number of breaths within the preset time can represent the number of breaths within 1 minute.

[0043] It is worth noting that the main parameters of the human breathing simulation device 100 include the respiratory frequency and tidal volume of human bodies of different age groups. Among them, the corresponding respiratory frequencies of infants, children, and adults are 30-40bpm, 16-25bpm, and 12-18bpm, respectively; the respiratory volume is the tidal volume, which refers to the amount of air inhaled and exhaled each time during calm breathing. It is related to factors such as age, gender, breathing habits, and metabolism. The value is not constant. Under normal circumstances, adults: 8-10ml / kg, children: 6-10ml / kg. The tidal volume corresponding to a 70kg adult is 420-700ml. The tidal volume of a newborn is 15-20mL, 30-70mL at the age of 1, 86mL at the age of 2, and 120mL at the age of 4. With the increase of age, the tidal volume gradually increases. Therefore, taking the tidal volume of this age group as the standard, selecting a suitable lung sac 10, and controlling the inflation volume of the lung sac 10 by the air pump can simulate the chest movement effect of different age groups.

[0044] This embodiment also provides a car cabin detection device, including the above-mentioned breathing simulation device 100, having all its beneficial effects.

[0045] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

[0046] In the description herein, many specific details, such as examples of components and / or methods, are provided to provide a complete understanding of the embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more specific details or by other devices, systems, components, methods, components, materials, parts, etc. In other cases, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of the embodiments of the present invention.

[0047] References throughout the specification to "one embodiment," "an embodiment," or "a specific embodiment" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment is included in at least one embodiment of the present invention, and not necessarily in all embodiments. Thus, various appearances of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout the specification do not necessarily refer to the same embodiment. In addition, the particular features, structures, or characteristics of any specific embodiment of the present invention may be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments of the present invention described herein and shown may be based on the teachings herein and will be considered part of the spirit and scope of the present invention.

[0048] It should also be understood that one or more of the elements shown in the figures may also be implemented in a more separate or more integrated manner, or even removed because they are inoperable in certain circumstances or provided because they may be useful depending on the application.

[0049] In addition, unless otherwise explicitly indicated, any marking arrows in the drawings should be regarded as exemplary only and not limiting. In addition, unless otherwise indicated, the term "or" used herein is generally intended to mean "and / or". In the case where the term is not clear because it is anticipated that the ability to separate or combine is provided, the combination of components or steps will also be regarded as indicated.

[0050] As used in the description herein and throughout the claims that follow, "a", "an", and "the" include plural references unless otherwise indicated. Likewise, as used in the description herein and throughout the claims that follow, the meaning of "in" includes "in" and "on" unless otherwise indicated.

[0051] The above description of the illustrated embodiments of the present invention (including the contents in the abstract of the specification) is not intended to be an exhaustive list or to limit the present invention to the precise form disclosed herein. Although specific embodiments of the present invention and examples of the present invention are described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the present invention as will be recognized and understood by those skilled in the art. As noted, these modifications may be made to the present invention in accordance with the above description of the embodiments of the present invention, and these modifications will be within the spirit and scope of the present invention.

[0052] Systems and methods have been generally described herein as details that are helpful for understanding the present invention. In addition, various specific details have been given to provide an overall understanding of the embodiments of the present invention. However, those skilled in the relevant art will recognize that the embodiments of the present invention can be practiced without one or more specific details, or practiced using other devices, systems, accessories, methods, components, materials, parts, etc. In other cases, well-known structures, materials, and / or operations are not specifically shown or described in detail to avoid confusion with various aspects of the embodiments of the present invention.

Claims

1. A breathing simulation device, characterized in that: include: Model ontology; A lung sac is arranged in the model body; A reflector is in contact with one side of the lung sac and is capable of floating along with the change of the air volume inside the lung sac; An air pump assembly, connected to the lung sac, for changing the internal air volume; The control module is electrically connected to the air pump assembly and is used to control the working state of the air pump assembly.

2. The breathing simulation device according to claim 1, characterized in that The breathing simulation device also includes a support rod and a support plate, the model body has a receiving groove, one end of the support rod is connected to the receiving groove, and the other end is connected to the support plate, and a side of the support plate away from the support rod abuts against the lung sac; The support rod can be extended and retracted along its own axial direction, so as to drive the lung sac to move away from or closer to the accommodating groove through the support plate.

3. The breathing simulation device according to claim 1, characterized in that The breathing simulation device also includes a simulated skin component, which is arranged on the surface of the model body.

4. The breathing simulation device according to claim 3, characterized in that The simulated skin component includes a simulated skin layer and a reflective layer, wherein the reflective layer is located between the model body and the simulated skin layer, and the conductivity of the reflective layer is higher than the conductivity of the simulated skin layer.

5. The breathing simulation device according to claim 4, characterized in that: The reflective layer includes a tin foil layer.

6. The breathing simulation device according to claim 1, characterized in that: The air pump assembly includes a first air pump, a second air pump and an adapter, and the adapter is respectively connected to the lung sac, the air outlet of the first air pump and the air inlet of the second air pump; when the lung sac is in an inhalation state, the control module controls the first air pump to work, and the fluid is filled into the lung sac through the air outlet of the first air pump; when the lung sac is in an exhalation state, the control module controls the second air pump to work, and the fluid is discharged from the lung sac through the air inlet of the second air pump.

7. The breathing simulation device according to claim 6, characterized in that The first air pump is connected to the adapter through a first air pipe, and the second air pump is connected to the adapter through a second air pipe.

8. The breathing simulation device according to claim 6, characterized in that The control module includes a control board and two relays, the output end of the control board is electrically connected to the input ends of the two relays, and the output ends of the two relays are electrically connected to the control end of the first air pump and the control end of the second air pump.

9. The breathing simulation device according to claim 1, characterized in that: The control module can control the inflation and deflation times of the air pump assembly to simulate the breathing times of the lung sac; the control module can also control the inflation volume and deflation volume of the air pump assembly to simulate the fluctuation degree of the lung sac; the control module can also control the inflation time and deflation time of the air pump assembly to simulate the breathing time of the lung sac.

10. The breathing simulation device according to claim 9, characterized in that: The control module can also generate an adult mode, a child mode and an infant mode by controlling the air pump assembly, wherein the breathing frequency corresponding to the adult mode is smaller than the breathing frequency corresponding to the child mode, and the breathing frequency corresponding to the child mode is smaller than the breathing frequency corresponding to the infant mode, and the breathing frequency is used to characterize the number of breaths within a preset breathing time; the exhaust volume corresponding to the adult mode is larger than the exhaust volume of the child mode, and the exhaust volume of the child mode is larger than the exhaust volume of the infant mode.

11. An automobile cockpit detection device, characterized in that: Comprising a breathing simulation device as described in any one of claims 1-10.

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