Pressure display device, temperature calibration method and emergency evacuation slide

Abstract

The present invention relates to a pressure display device, comprising: a pressure pointer that moves within a first range of movement; a base color band that covers the first range of movement in a first direction and is provided with a first color; a temperature component that is disposed above the base color band and covers the first range of movement, wherein the temperature component includes a first section and a second section whose lengths change according to temperature changes, the first section being provided with a second color and the second section being transparent; and a protective cover that encloses the pressure pointer, base color band, and temperature component between the protective cover and the housing. This device allows modification of only the housing portion of the pressure gauge, enabling accurate determination of whether the pressure at the current temperature is within a predetermined range even when the temperature changes, thereby reducing modification costs and visually achieving temperature display compensation. Furthermore, the present invention also relates to a temperature calibration method and an emergency evacuation slide.

Description

Technical Field

[0001] The present invention belongs to the field of cabin equipment and relates to a pressure display device, and more specifically to a design of a temperature-compensated pressure gauge for an aircraft emergency evacuation slide. Furthermore, the present invention relates to a temperature calibration method and an emergency evacuation slide. Background Art

[0002] Aircraft emergency evacuation slides are used to assist personnel in the rapid evacuation of aircraft in emergency situations. The main components of an emergency evacuation slide include an inflation assembly, airbags, emergency lighting assemblies, and pre-positioning assemblies. The inflation assembly includes a gas cylinder, an ejector, a hose, etc., and the gas cylinder normally stores high-pressure gas. When an emergency situation occurs and the slide airbag needs to be deployed, the gas in the cylinder can be released, allowing the high-pressure gas to flow quickly into the airbag. At the same time, the ejector will also drive ambient gas into the airbag. After the two gas streams fill the airbag, they ensure that the airbag can be filled with gas and maintain sufficient rigidity and strength to support the people on board to slide down from it.

[0003] As can be seen from the above principle, the amount of gas in the cylinder is crucial for ensuring sufficient inflation of the airbag. Since cylinders and valves may leak, the airbag may become insufficient after prolonged storage. If the airbag is insufficient, the airbag will be insufficient and unable to support a person sliding on it. To measure the amount of gas in the cylinder, a pressure gauge is generally installed on the cylinder valve. If the pressure indicator does not deviate from the expected value, the gas supply meets the requirements. Red and green zones are usually set. If the pressure gauge pointer is in the green zone, it means that the air supply is sufficient to support the slide launch. If the pressure pointer is in the red zone, it means that the air supply is insufficient to support the slide launch.

[0004] On the other hand, the ideal gas state equation (PV = nRT) shows that, ideally, the volume V of the gas in the cylinder remains constant due to the cylinder's limitations, and the amount of gas, n, remains constant, with R being a constant. Therefore, when the temperature T changes, the pressure of the gas in the cylinder also changes: higher temperatures increase the pressure, while lower temperatures decrease the pressure.

[0005] Therefore, when using a pressure gauge to monitor the gas volume in a gas cylinder, if the ambient temperature remains constant, fluctuations in the pressure indicator can be used to determine whether the gas volume in the cylinder has decreased. However, if the ambient temperature changes, it is impossible to accurately determine whether the pressure indicator change is due to leakage or temperature fluctuations, or whether the changed gas volume still meets the requirements.

[0006] Therefore, the pressure gauge used for slide gas cylinders usually needs to have an integrated temperature compensation function. The existing pressure gauge designs with temperature compensation functions in the prior art can include the following: In the first pressure gauge design, a temperature-sensitive bimetallic ring is integrated on the rotating shaft of the pressure pointer, and the torque / displacement generated by the temperature-sensitive material when the temperature changes offsets the torque / displacement of the pressure pointer caused by the temperature. In the second pressure gauge design, the temperature-sensitive bimetallic ring and the pressure pointer rotating shaft are independent to indicate the temperature and pressure respectively, and the gas volume is judged by the difference in rotation. In the third pressure gauge design, a temperature sensor is added, and after detecting the change in ambient temperature, a signal is fed back to the digital pressure gauge, and the temperature effect is eliminated through calculation. These methods all require major changes to the core components of the dial in the pressure gauge, which are difficult to integrate and debug, and require a large number of verification tests on the modified pressure gauge.

[0007] Therefore, there is an urgent need to optimize the structure of the pressure display device in the prior art so as to provide an improved pressure display device that can overcome one or more shortcomings in the prior art. Summary of the Invention

[0008] The purpose of the present invention is to provide a pressure display device, which can achieve temperature display compensation of the pressure value in visual effect by modifying the pressure gauge case (such as the pressure gauge cover) without changing the core components of the pressure gauge dial (such as the pressure gauge movement).

[0009] According to one aspect of the present invention, a pressure display device is provided, which can be attached to a fluid pressure source and can include:

[0010] a pressure pointer attachable to a core disposed within the housing to move within a first movement range following changes in fluid pressure from a fluid pressure source;

[0011] a base color belt, the base color belt can cover a first movement range in a first direction, and the base color belt is provided with a first color;

[0012] a temperature component, which may be disposed on the base color belt and cover a first movement range in a first direction, wherein the temperature component may include a first segment and a second segment whose lengths change according to temperature changes, and the first segment is provided with a second color different from the first color, and the second segment is provided with a transparent color; and

[0013] A protective cover is attachable to the housing and encloses the pressure pointer, the base color ribbon, and the temperature assembly between the protective cover and the housing.

[0014] In this way, the area not covered by the temperature component will display the first color of the base color band, while the area covered by the first section of the temperature component will display the second color. This pressure display device allows for relatively accurate reading or determination of whether the pressure at the current temperature is within a predetermined range, such as whether it remains within the first color range, even when the temperature changes. This pressure display device allows modification of only the housing of the pressure gauge without changing the core components of the pressure dial, reducing modification costs and visually achieving temperature compensation for the pressure value display.

[0015] According to the above aspects of the present invention, in order to amplify the color changes of the base color band and the temperature component so that the crew or operator can identify them more easily, preferably, the pressure display device may also include an amplification component, which is arranged between the temperature component and the protective cover and covers the first movement range in the first direction.

[0016] According to the above aspects of the present invention, in order to further improve the temperature display effect and facilitate the reading and identification of the pressure pointer, preferably, the amplifying component may include a plurality of convex lenses arranged side by side in the first direction.

[0017] According to the above aspects of the present invention, the temperature assembly preferably includes a temperature belt having a hollow channel and a temperature medium contained in the hollow channel, wherein the temperature medium changes length in a first direction in response to changes in temperature. This arrangement allows for a more intuitive display of the relationship between temperature changes and pressure changes, and facilitates reading the pressure range after temperature compensation.

[0018] According to the above aspects of the present invention, preferably, the hollow channel may have a cross-sectional area, and the cross-sectional area varies in the first direction depending on the ratio of the lengths of the first section and the second section in the first direction and the displacement change of the pressure pointer in the first direction at different temperatures. For example, if the cross-sectional area of ​​the hollow channel increases, the displacement of the temperature medium (such as liquid) in the first direction decreases, and the corresponding scale calibration ratio is relatively small. Conversely, if the cross-sectional area of ​​the hollow channel decreases, the displacement of the temperature medium in the first direction increases, and the corresponding scale calibration ratio is relatively large.

[0019] According to the above aspect of the present invention, preferably, the first color can be green and the second color can be red; or the base color band and the temperature component can have the same size and shape, for example, the same size and shape in the first direction and radial direction. In this way, the green and red zone ranges can be intuitively displayed solely by color, making it possible to more intuitively and accurately determine whether the pressure value at a specific temperature meets the requirements for safe operation of the emergency evacuation slide.

[0020] According to another aspect of the present invention, a temperature calibration method is proposed, which may include the following steps:

[0021] A preparation step, in which the pressure display device and a fluid pressure source according to the above aspect may be provided, the pressure display device is fluidically connected to the fluid pressure source, and the fluid in the fluid pressure source is brought to a lower limit of the fluid amount;

[0022] a reference measurement step, in which, at a plurality of temperatures between a first temperature threshold and a second temperature threshold, a displacement of the pressure pointer at each of the plurality of temperatures is measured and recorded;

[0023] During the calibration step, parameters of the temperature component are selected based on the displacement, so that at each of the multiple temperatures, the pressure pointer is positioned at the junction of the first and second sections. Because the temperature medium shifts within the hollow channel as the temperature changes, the position of the junction between the first and second sections also changes accordingly.

[0024] According to the above aspect of the present invention, preferably, the first temperature threshold is -55 degrees Celsius, the second temperature threshold is 85 degrees Celsius, and the temperature values ​​of the plurality of temperatures comprise an arithmetic progression that increases from the first temperature threshold to the second temperature threshold by a predetermined tolerance, wherein the predetermined tolerance is selected from one of the following: 5, 2, 1, 0.5, 0.2, or 0.1. This arrangement allows the temperature calibration method to meet more demanding usage environment requirements and flexibly adjust the display accuracy by setting the predetermined tolerance.

[0025] According to the above aspects of the present invention, preferably, selecting the parameters of the temperature component may include selecting the cross-sectional area of ​​the hollow channel of the temperature zone of the temperature component and / or selecting the type of temperature medium accommodated in the hollow channel.

[0026] According to another aspect of the present invention, an emergency evacuation slide comprising the pressure display device described in the above aspect is provided.

[0027] The beneficial technical effects of the pressure display device according to the present invention may include but are not limited to the following aspects:

[0028] 1) The pressure display device allows the temperature to be displayed in a visually displayable manner by modifying the pressure gauge case, especially the pressure gauge case and the display part thereof, without changing the core components of the pressure gauge dial.

[0029] 2) A temperature component calibration method based on the change of the pressure pointer is proposed to adjust the accuracy of temperature compensation for different emergency evacuation slides or different application scenarios, and customize the parameters of the corresponding temperature compensation components.

[0030] Existing methods for designing temperature display compensation for pressure gauges require modification of the gauge's core components and a series of qualification tests based on installation requirements. This modification is equivalent to developing a new pressure gauge, resulting in a significant design effort and a lengthy development cycle. For example, typical development costs exceed 100,000 RMB, and the development cycle for a new pressure gauge typically takes around a year.

[0031] In contrast, using the pressure display device according to the present invention does not require modification of the core components of the pressure gauge, nor does it require further testing. Therefore, replacing this pressure display device with a pressure gauge is a relatively minor modification to the pressure gauge, with minimal structural changes and greater compatibility. Various mature pressure gauges already in the art can be modified according to this method to adapt to different application scenarios, such as emergency evacuation slides for different models.

[0032] Therefore, the pressure display device of the present invention can meet the use requirements, overcome the shortcomings of the prior art and achieve the intended purpose. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to further clearly describe the pressure display device according to the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. In the accompanying drawings:

[0034] Figure 1 is a schematic diagram of an emergency evacuation slide according to a non-limiting embodiment of the present invention;

[0035] Figure 2 is a schematic perspective view of a pressure display device according to a non-limiting embodiment of the present invention;

[0036] Figure 3 It is along Figure 2 A schematic cross-sectional view of a portion of the pressure display device taken along line AA;

[0037] Figure 4 is an exploded perspective view of a pressure display device according to a non-limiting embodiment of the present invention;

[0038] Figure 5 is a schematic side exploded view of a portion of a pressure display device according to a non-limiting embodiment of the present invention;

[0039] Figure 6 Schematically illustrates components of a pressure display device according to a non-limiting embodiment of the present invention;

[0040] Figure 7 shows the pressure display of the pressure display device according to a non-limiting embodiment of the present invention at different temperatures at minimum gas volume; and

[0041] Figure 8 FIG1 shows the pressure display of a pressure display device according to a non-limiting embodiment of the present invention at different temperatures when the gas volume is normal.

[0042] The above drawings are merely schematic and are not drawn strictly to scale.

[0043] List of reference numerals in the figures and embodiments:

[0044] 1000-Emergency Evacuation Slide, including:

[0045] 100-Pressure display device, including:

[0046] 10-pressure pointer;

[0047] 20-base color band;

[0048] 30-Temperature Assembly, including:

[0049] 31- first section;

[0050] 32-Second section;

[0051] 30A-temperature zone;

[0052] 30B-temperature medium;

[0053] 40-protective cover;

[0054] 50-Amplification component;

[0055] 101-housing;

[0056] 200-Airbag. DETAILED DESCRIPTION

[0057] It should be understood that, unless expressly stated to the contrary, the present invention may employ various alternative orientations and step sequences. It should also be understood that the specific devices shown in the drawings and described in the specification are merely exemplary embodiments of the inventive concepts disclosed and defined herein. Thus, unless expressly stated otherwise, the specific orientations, directions, or other physical characteristics of the various disclosed embodiments should not be considered limiting.

[0058] Figure 1FIG2 is a schematic diagram of an emergency evacuation slide 1000 according to a non-limiting embodiment of the present invention. As shown, the emergency evacuation slide 1000 may include a pressure display device 100 and an air bag 200. The pressure display device (or pressure gauge) 100 may be connected to a gas cylinder to indicate whether the pressure of the high-pressure gas within the cylinder is within a predetermined pressure range. The specific structure of the gas cylinder is not shown in the drawings, but it may be any type of gas cylinder known in the art and is fluidically connected to the air bag 200 via corresponding pipelines.

[0059] A red zone and a green zone can be set on the pressure display device 100. If the pressure gauge pointer is in the green zone, it means that the air volume is sufficient to support the slide throwing; and if the pressure pointer is in the red zone, it means that the air volume is insufficient to support the slide throwing.

[0060] According to the inventive concept of the present invention, only the housing of a pressure display device such as a pressure gauge is improved, for example, the upper display housing portion above the dial thereof is improved, without improving the movement or core components of the pressure display device. The size of the pressure display device 100 according to the present invention or the proportions of its components can be modified to match various pressure gauges existing in the prior art, such as replacing the upper housing portion of an existing pressure gauge to allow a visual display of a temperature-compensated pressure value interval. It should be understood that the "pressure value" described herein can be a specific pressure value in units of Pa (Pascal) or Mpa (MegaPascal), or it can be a schematic value that only schematically indicates whether the amount of gas in the fluid pressure source is within a predetermined range, such as a threshold interval represented only by color, without a specific pressure value.

[0061] For the sake of simplicity, the pressure display device 100 in the present invention can be described mainly with respect to the display part of the pressure gauge, without including core components such as the movement. The structures of these core components are all known. Therefore, the pressure display device 100 in the present invention can be understood as also including at least some or all of these core components.

[0062] Figure 2 is a schematic perspective view of a pressure display device 100 according to a non-limiting embodiment of the present invention; Figure 3 It is along Figure 2 A schematic cross-sectional view of a portion of the pressure display device 100 taken along line AA; Figure 4 is an exploded perspective view of a pressure display device 100 according to a non-limiting embodiment of the present invention; and Figure 5 is a schematic side exploded view of a portion of a pressure display device 100 according to a non-limiting embodiment of the present invention.

[0063] like Figure 2-5As shown and in accordance with a non-limiting embodiment of the present invention, the pressure display device 100 may be attached to a fluid pressure source, such as a high-pressure gas cylinder, to indicate the pressure of a fluid contained within the fluid pressure source, such as the pressure of a high-pressure gas.

[0064] The pressure display device 100 may mainly include components such as a pressure pointer 10, a base color band 20, a temperature component 30 and a protective cover 40. These components may be arranged in sequence from the inside to the outside, for example, arranged in layers from the movement or the dial upwards, such as Figure 4 and 5 As shown in detail.

[0065] The pressure pointer 10 can be attached to a core component of the pressure gauge, for example, a core disposed within the housing 101, so as to move within a first range of motion in response to changes in fluid pressure from a fluid pressure source. In embodiments where the temperature display device is formed as a substantially circular display interface, the pressure pointer 10 can oscillate circumferentially within the first range of motion (or angular direction).

[0066] For example, counterclockwise swing of the pressure pointer 10 may indicate a decrease in pressure, while clockwise swing may indicate an increase in pressure. Furthermore, the fluid pressure of the fluid pressure source indicated by the pressure pointer 10 when it is on the left may be higher than the fluid pressure when it is on the left. This change in pressure may be caused by a change in the amount of fluid (e.g., the amount of high-pressure gas) in the fluid pressure source (e.g., a high-pressure gas cylinder) or a change in temperature.

[0067] For example, when the pressure increases, the pressure of the fluid contained in the fluid pressure source will increase accordingly, and the pressure pointer 10 will swing clockwise to the right; when the temperature decreases, the pressure of the fluid contained in the fluid pressure source will decrease accordingly, causing the pressure pointer 10 to swing counterclockwise to the left.

[0068] The base color band 20 may cover a first movement range in a first direction. In an embodiment where the temperature display device is formed as a substantially circular display interface and the pressure pointer 10 swings, the first direction may be a circumferential direction, and the first movement range may refer to a first angular range.

[0069] For example, the base color belt 20 may be formed into a fan ring shape as shown in the figure. Preferably, the base color belt 20 may be provided with a first color, such as green, so that the base color belt 20 forms a continuous green strip in the fan ring shape.

[0070] The temperature assembly 30 may be disposed above the base ribbon 20 and cover a first movement range in a first direction.

[0071] The temperature assembly 30 may include a temperature belt 30A having a hollow channel and a temperature medium 30B contained in the hollow channel (e.g., contained at a first end of the hollow channel). The hollow channel may have a cross-sectional area substantially perpendicular to the hollow channel along a first direction, and the cross-sectional area defines the flow rate of the temperature medium 30B flowing therethrough.

[0072] The temperature medium 30B can change its length in the first direction according to changes in temperature. The temperature band 30A can also extend in an arc-shaped path along the same path as the fan-shaped path of the base color band 20. Preferably, the base color band 20 and the temperature assembly 30 have the same size and shape in the first direction and radial direction. That is, when looking down at the pressure display device 100, the shape of the temperature band 30A completely covers the shape of the base color band 20.

[0073] As a non-limiting example, when the temperature increases, the temperature medium 30B can move clockwise from the left side to the right side along the hollow channel as shown in the figure. The temperature medium 30B can be provided with a second color different from the first color, for example, the temperature medium 30B can be a red liquid.

[0074] Thus, the temperature assembly 30 can be divided into two sections based on color: a first section filled with a temperature medium 30B having a second color, and a second section 32 that is not filled with the temperature medium. This means that the hollow passage remains hollow and can therefore be transparent. Since the temperature medium 30B expands or contracts in response to temperature changes, the lengths of the first section 31 and the second section 32 change accordingly.

[0075] Preferably, the temperature belt 30A with the hollow channel remains transparent except for the portion containing the temperature medium 30B, that is, the portion containing the temperature medium 30B can block the base color belt 20 having the first color, so that only the second color of the temperature medium 30B is displayed, and for the portion that does not contain the temperature medium 30B, the temperature belt 30A can still remain transparent, so that the base color belt 20 having the first color can be observed through the temperature belt 30A, and when observing this portion, only the first color is observed.

[0076] For example, when the temperature increases, the length of the first segment 31 along the first direction increases, and therefore, the length of the second segment 32 along the first direction decreases accordingly, so that the ratio of the first segment 31 to the second segment 32 increases. Conversely, when the temperature decreases, the length of the first segment 31 along the first direction decreases, and therefore, the length of the second segment 32 along the first direction increases accordingly, so that the ratio of the first segment 31 to the second segment 32 decreases.

[0077] It can be seen that when the temperature rises, on the one hand, the pressure pointer 10 will swing clockwise due to the increase in pressure, and on the other hand, the length of the first section 31 along the first direction will also increase accordingly, that is, the boundary between the first section 31 and the second section 32 moves clockwise to the right, thereby reducing the length or area of ​​the base color band 20 with the first color (for example, green) that is not covered by the temperature band 30A with the second color (for example, red), that is, for the observer or operator, the area of ​​the observed first color is reduced.

[0078] Conversely, when the temperature decreases, the pressure pointer 10 swings counterclockwise due to the reduced pressure. Furthermore, the length of the first segment 31 along the first direction decreases accordingly, i.e., the boundary between the first segment 31 and the second segment 32 moves clockwise to the left. Consequently, the length or area of ​​the base color band 20 having the first color (e.g., green) that is not covered by the temperature band 30A having the second color (e.g., red) increases. In other words, the area of ​​the first color observed by an observer or operator increases.

[0079] With this arrangement, pressure fluctuations caused by temperature changes can be compensated, ensuring that when the pressure pointer 10 is located in the first color area, for example, green, there is a sufficient amount of fluid in the fluid pressure source.

[0080] The pressure display device 100 according to the present invention can be calibrated for different pressure gauges to meet the modification requirements of different models or emergency evacuation slides, and further increase the display accuracy. For different pressure gauges, the pressure pointer 10 may swing or rotate at different angles for every 1MPa increase in pressure (or pressure intensity). For example, the pressure pointer 10 may swing 1 degree in the clockwise direction, or it may swing 2 degrees, or other degrees. This application assumes that the angle of the pressure pointer 10 changes by w degrees for every 1MPa increase in pressure.

[0081] For different temperature components 30, the amount of movement of the temperature medium 30B in the hollow channel is different for every 1 degree Celsius increase in temperature, that is, the intersection of the first section 31 and the second section 32 is located at different circumferential or angular positions. For an arc-shaped temperature component 30, the movement amount can also correspond to a swing or rotation angle in the circumferential direction. For example, when the temperature rises by 1 degree Celsius, the swing or rotation angle may be 1 degree, 2 degrees, or other degrees. This application assumes that when the temperature increases by 1 degree Celsius, the intersection point or boundary line of the first section 31 and the second section 32 moves or rotates in the first direction by an angle of q degrees.

[0082] Thus, when selecting the temperature assembly 30 to fit the pressure gauge, or when designing the parameters of the temperature assembly 30 to fit the pressure gauge, a temperature assembly with q = w can be selected. Alternatively, the hollow passage of the temperature assembly 30 can be designed (e.g., by changing its cross-sectional area) so that for every 1°C increase in temperature, the angle of rotation of the interface (e.g., the interface) between the first section 31 and the second section 32 reaches w degrees.

[0083] In addition, due to the influence of changes in the gas volume in the fluid pressure source (such as a gas cylinder), the environment, and the performance differences of the pressure gauge components in different temperature ranges, the pressure gauge may actually display nonlinear readings.

[0084] In this case, the cross-sectional area of ​​the hollow channel of the temperature component 30 in different intervals can be adjusted to adapt to the changing trend of the pressure gauge reading. The temperature component 30 can be corrected according to the calibration ratio. When the cross-sectional area of ​​the hollow channel of the temperature zone 30A is a fixed value, the scale corresponding to each temperature increment is also fixed. Because there are different scale calibration ratios, the calibration ratio can be matched by changing the size of the cross-sectional area of ​​the hollow channel at different temperature points. That is, if the cross-sectional area of ​​the hollow channel increases, the movement of the temperature medium 30B (such as liquid, etc.) decreases, and the corresponding scale calibration ratio is relatively small; if the cross-sectional area of ​​the hollow channel decreases, the movement of the temperature medium 30B increases, and the corresponding scale calibration ratio is relatively large.

[0085] According to the above description, it can be seen that depending on the displacement change value of the first segment 31 and the second segment 32 in the angular direction at different temperatures, such as the angle change value, the displacement change value may correspond to the length ratio of the first segment 31 and the second segment 32 in the first direction, and depending on the displacement change value of the pressure pointer 10 in the first direction, the cross-sectional area of ​​the hollow channel of the temperature zone 30A may be variable in the first direction.

[0086] like Figure 2-4 As shown in FIG, the protective cover 40 can be attached to the housing 101 and enclose the pressure pointer 10, the base color ribbon 20, and the temperature assembly 30 between the protective cover 40 and the housing 101. The protective cover 40 is substantially transparent and can be made of glass, sapphire, or various polymers.

[0087] According to a preferred embodiment of the present invention, the base color strip 20, the temperature assembly 30 and the protective cover 40 can be integrally formed into a modular component so as to integrally replace the gauge cover of the pressure gauge in the prior art.

[0088] Figure 6 Components of a pressure display device 100 according to a non-limiting embodiment of the present invention are schematically shown.

[0089] As shown in the figure, the pressure display device 100 may further include an amplifying component 50. The amplifying component 50 may be disposed between the temperature component 30 and the protective cover 40 and cover a first movement range in a first direction, for example, having the same size in the first direction as the base color belt 20 and the temperature belt 30A.

[0090] As a preferred embodiment, the magnifying component 50 includes a plurality of convex lenses arranged side by side in a first direction, so as to minimize image deformation caused by image magnification and improve display effects.

[0091] In addition, preferably, the base color band 20, temperature component 30, protective cover 40 and amplification component 50 can be integrally formed into a modular component so as to integrally replace the display part of the housing of the pressure gauge in the prior art, such as the cover of the pressure gauge.

[0092] According to a non-limiting embodiment of the present invention, a temperature calibration method may optionally include the following steps:

[0093] A preparation step is performed, wherein a pressure display device 100 according to the present invention and a fluid pressure source are provided. The pressure display device 100 is fluidically connected to the fluid pressure source, and the fluid in the fluid pressure source is set to a lower limit. The lower limit may be the amount of high-pressure gas allowed to be released by the slide.

[0094] Figure 7 FIG1 shows the pressure display of the pressure display device 100 according to a non-limiting embodiment of the present invention at different temperatures when the gas volume is minimum (ie, the lower limit of the fluid volume).

[0095] A reference measurement step, in which the displacement of the pressure pointer 10 at each of the temperatures between the first temperature threshold and the second temperature threshold is measured and recorded.

[0096] As a non-limiting example, the first temperature threshold can be set to approximately minus 55 degrees Celsius, and the second temperature threshold can be set to approximately 85 degrees Celsius, and the temperature values ​​of the several temperatures include an arithmetic progression that increases from the first temperature threshold to the second temperature threshold with a predetermined tolerance, and the predetermined tolerance is selected from one of the following combinations: 5, 2, 1, 0.5, 0.2 or 0.1.

[0097] In the calibration step, parameters of the temperature component 30 are selected according to the displacement (eg, deflection angle) so that the pressure pointer 10 is positioned at the junction of the first section 31 and the second section 32 at each of several temperatures.

[0098] For example, selecting parameters of the temperature assembly 30 may include selecting a cross-sectional area of ​​a hollow passageway of the temperature band 30A of the temperature assembly 30 and / or selecting a type of temperature medium 30B contained in the hollow passageway.

[0099] Figure 7 (A) in FIG. 1 shows that at a first temperature threshold (eg, approximately -55 degrees Celsius), the pressure pointer 10 is positioned at the junction of the first section 31 and the second section 32 ; Figure 7 (B) in FIG. 1 shows that at a normal temperature between the first temperature threshold and the second temperature threshold (eg, at a temperature of approximately 20 degrees Celsius), the pressure pointer 10 is positioned at the junction of the first segment 31 and the second segment 32; and Figure 7 (C) in FIG. 1 shows that at a second temperature threshold (eg, approximately 85 degrees Celsius), the pressure pointer 10 is positioned at the boundary between the first section 31 and the second section 32 .

[0100] If the pressure pointer 10 is at Figure 7 If the pressure pointer 10 is located to the left of the positions shown in (A), (B) and (C), it indicates that the pressure in the high-pressure gas cylinder is insufficient to make the airbag 200 meet the working state. Figure 7 The positions shown in (A), (B) and (C) in the figure, or to the right of these shown positions, indicate that the pressure in the high-pressure gas cylinder can meet the state of making the airbag 200 work.

[0101] Figure 8 FIG1 shows pressure display of the pressure display device 100 according to a non-limiting embodiment of the present invention at different temperatures when the gas volume is normal.

[0102] It can be seen that through Figure 7 After calibration with the minimum gas volume (i.e., the lower limit of the fluid volume), the pressure indicator 10 of the pressure display device 100 indicates the position of the pressure pointer 10 when the gas volume is normal. Figure 8 The temperatures at (A), (B) and (C) shown in FIG may correspond to Figure 7 The temperatures at (A), (B) and (C) are shown in FIG.

[0103] In this way, during the normal operation of the emergency evacuation slide 1000 provided with the pressure display device 100 according to the present invention, even if the gas cylinder and the valve leak and the temperature changes, it is sufficient as long as the pressure pointer 10 of the pressure display device 100 remains in the area not covered by the first section 31 of the temperature component 30, that is, the crew still observes that the pressure pointer 10 is in the area of ​​the first color (for example, green background color).

[0104] It should be understood that the steps of the temperature calibration method shown above are merely illustrative, and those skilled in the art may adjust the order of the steps, add steps, or delete corresponding steps accordingly.

[0105] As used herein, the terms "clockwise" and "counterclockwise" to indicate position or orientation, as well as the terms "first," "second," and the like to indicate order, are intended solely to facilitate a better understanding of the present invention as presented in the preferred embodiments by those skilled in the art and are not intended to limit the present invention. Unless otherwise specified, all sequences, positions, or orientations are used solely to distinguish one element / component / structure from another and, unless otherwise specified, do not imply any particular sequence, order of operation, direction, or orientation. For example, in alternative embodiments, "first segment" may be "second segment," and "clockwise" may alternatively refer to "counterclockwise."

[0106] In summary, the pressure display device 100 according to the embodiment of the present invention overcomes the shortcomings of the prior art and achieves the intended purpose of the invention.

[0107] Although the pressure display device of the present invention has been described above in conjunction with preferred embodiments, those skilled in the art should recognize that the above examples are for illustration only and are not intended to limit the present invention. Therefore, various modifications and variations may be made to the present invention within the spirit of the claims, and such modifications and variations will fall within the scope of the claims.

Claims

1. A pressure display device (100) attached to a fluid pressure source and comprising: a pressure pointer (10) attached to a core disposed in the housing (101) to move within a first movement range following changes in fluid pressure of the fluid pressure source; a base color belt (20), the base color belt covering the first movement range in a first direction, and the base color belt being provided with a first color; a temperature component (30) disposed on the base color belt (20) and covering the first movement range in a first direction, wherein the temperature component (30) comprises a first section (31) and a second section (32) whose lengths change according to temperature changes, and the first section (31) is provided with a second color different from the first color, and the second section (32) is provided to be transparent; and A protective cover (40) is attached to the housing (101) and encloses the pressure pointer (10), the base color ribbon (20) and the temperature component (30) between the protective cover (40) and the housing (101).

2. The pressure display device (100) according to claim 1, characterized in that: The device also includes an amplifying component (50), which is disposed between the temperature component (30) and the protective cover (40) and covers the first movement range in a first direction.

3. The pressure display device (100) according to claim 2, characterized in that: The magnifying assembly (50) includes a plurality of convex lenses arranged side by side in the first direction.

4. The pressure display device (100) according to claim 1, characterized in that: The temperature component (30) includes a temperature belt (30A) with a hollow channel and a temperature medium (30B) accommodated in the hollow channel, wherein the temperature medium changes length in a first direction according to a change in temperature.

5. The pressure display device (100) according to claim 4, characterized in that: The hollow channel has a cross-sectional area, and the cross-sectional area varies in the first direction depending on the length ratio of the first section (31) to the second section (32) in the first direction and the displacement change value of the pressure pointer (10) in the first direction at different temperatures.

6. The pressure display device (100) according to any one of claims 1 to 5, characterized in that: The first color is green, and the second color is red.

7. A temperature calibration method comprising the following steps: a preparation step, in which a pressure display device (100) according to any one of claims 1 to 6 and a fluid pressure source are provided, the pressure display device (100) is fluidically connected to the fluid pressure source and the fluid in the fluid pressure source is made to be at a lower limit of the fluid amount; a reference measurement step, in which, at a plurality of temperatures between a first temperature threshold and a second temperature threshold, a displacement of the pressure pointer (10) is measured and recorded at each of the plurality of temperatures; A calibration step is performed, wherein parameters of the temperature component (30) are selected according to the displacement so that at each of the plurality of temperatures, the pressure pointer (10) is positioned at the junction of the first section (31) and the second section (32).

8. The method according to claim 7, characterized in that The first temperature threshold is minus 55 degrees Celsius, the second temperature threshold is 85 degrees Celsius, and the temperature values ​​of the multiple temperatures include an arithmetic progression that increases from the first temperature threshold to the second temperature threshold with a predetermined tolerance, and the predetermined tolerance is selected from one of the following combinations: 5, 2, 1, 0.5, 0.2 or 0.

1.

9. The method according to claim 7, characterized in that Selecting the parameters of the temperature component (30) includes selecting the cross-sectional area of ​​the hollow channel of the temperature zone (30A) of the temperature component (30) and / or selecting the type of the temperature medium (30B) contained in the hollow channel.

10. An emergency evacuation slide (1000) comprising the pressure display device (100) according to any one of claims 1 to 6.

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