An explosion-proof indicating device for helicopter deck monitoring system

Abstract

The present invention discloses an explosion-proof indication device for a helicopter deck monitoring system, comprising a housing, an upper cover and a lampshade, wherein the lampshade is fixed on the upper cover, the upper cover is fixed on the housing, a light source board, a reflective cup, a radiator and a control circuit board are arranged in the housing, wherein the reflective cup is mounted on the light source board, the light source board is mounted on the radiator, the control circuit board is mounted on the housing, at least two circles of light source rings with different color LED lamp beads arranged at intervals are arranged on the light source board, the control circuit board is connected to the light source board, and controls the different color LED lamp beads on the light source board to operate in different light emission modes based on the received signal. The explosion-proof indication device for a helicopter deck monitoring system provided by the present invention can convert the HMS status signal into color-coded visual information that is easily recognizable by helicopter pilots, thereby greatly improving the safety and convenience of use of the explosion-proof indication device.

Description

Technical Field

[0001] The invention relates to a navigation lighting device, in particular to an explosion-proof indicating device for a helicopter deck monitoring system (HMS). Background Art

[0002] At present, the lighting system of mobile helicopter landing platform usually consists of boundary lights, floodlights, H lights / circle lights, wind bag lights, status lights and other lights. Among them, the boundary lights are used to indicate the platform boundary position, the floodlights and H lights / circle lights are used to indicate the helicopter landing position, the wind bag lights are used to indicate the wind direction and wind speed, and the status lights are used to indicate the safety status of the platform. The above lighting information can only reflect the static properties of the helicopter deck. When the helicopter platform moves with the ship, the movement status of the helicopter deck is very important for the helicopter pilot who is about to land.

[0003] Therefore, there is an urgent need for a device that can provide direct visual information to the helicopter pilot from the helicopter deck, including the movement status of the helicopter deck during landing and potential unsafe wind conditions after landing. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an explosion-proof indication device for a helicopter deck monitoring system, which can convert the HMS status signal into color-coded visual information that is easily recognizable by helicopter pilots, thereby greatly improving the safety and ease of use of the explosion-proof indication device.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is to provide an explosion-proof indication device for a helicopter deck monitoring system, comprising a shell, an upper cover and a lampshade, wherein the lampshade is fixed on the upper cover, and the upper cover is fixed on the shell, and a light source board, a reflective cup, a radiator and a control circuit board are arranged in the shell, wherein the reflective cup is mounted on the light source board, the light source board is mounted on the radiator, and the control circuit board is mounted on the shell, and at least two circles of light source rings with different colors of LED lamp beads arranged at intervals are provided on the light source board, and the control circuit board is connected to the light source board, and controls the LED lamp beads of different colors on the light source board to operate in different light-emitting modes based on the received signal.

[0006] Furthermore, the light source plate is provided with an outer ring light source and an inner ring light source, the outer ring light source is located outside the reflective cup, and the inner ring light source is located inside the reflective cup.

[0007] Furthermore, the reflective cup is in a trumpet shape, and its opening gradually increases upward; the diameter of the outer ring light source is larger than the bottom diameter of the reflective cup, and the diameter of the inner ring light source is smaller than the inner diameter of the reflective cup.

[0008] Furthermore, the outer circle light source and the inner circle light source are connected in series, the outer circle light source is a main light source, and the light intensity in the range of 5-15° is greater than 400cd, and the inner circle light source is a fill light source, and the light intensity in the range of 15°-90° is greater than 100cd.

[0009] Furthermore, the outer circle light source and the inner circle light source are respectively composed of blue lamp beads, amber lamp beads and red lamp beads arranged at intervals, the number of amber lamp beads is the same as the number of red lamp beads, and the number of blue lamp beads is twice the number of amber lamp beads.

[0010] Furthermore, the three colors of lamp beads are independent of each other and are divided into three output paths; the lamp beads of a single color are connected in series and parallel, so that the current passing through the inner circle light source lamp beads is 2 / 3 of the current of the outer circle light source lamp beads.

[0011] Furthermore, the lampshade is fixed to the upper cover by a threaded pressing ring, the lampshade and the upper cover are sealed by glue sealing, the upper cover and the housing are sealed by a sealing ring, and the plane where the light source board is located is not lower than the surface of the upper cover.

[0012] Furthermore, the light source board is installed on the radiator, the center of the light source board and the radiator is a through hole, the control circuit board is installed at the bottom of the shell, and a light control module is provided above the control circuit board. The light control module is located below the radiator and facing the through hole in the center of the light source board and the radiator; the light control module is used to receive ambient illumination, and judge the current working environment of the indicator light through the received ambient illumination information.

[0013] Furthermore, the control circuit board includes at least four signal input interfaces, three of which are used to receive HMS control signals, and one is used to receive a light control signal from a light control module; the control circuit board controls the LED lamp beads of different colors on the light source board to operate in a variety of light-emitting modes according to the HMS control signal, and the control circuit board controls the light intensity of the LED lamp beads according to the light control signal to achieve day / night mode switching.

[0014] Furthermore, when the ambient illumination is higher than 500 lux, it is in day mode; when the ambient illumination drops to 500 lux but has not reached 50 lux, it is in sunset mode; when the ambient illumination is lower than 50 lux, it is in night mode; when the ambient illumination exceeds 50 lux but has not reached 500 lux, it is in sunrise mode;

[0015] Constant light intensity in day mode: minimum light intensity in the range of 5-15° is 400cd, and minimum light intensity in the range of 15-90° is 100cd; maximum light intensity in the range of 0-20° is 800cd, and maximum light intensity in the range of 20-90° is 200cd;

[0016] Flashing light intensity in day mode: minimum light intensity in the range of 5-15° is 200cd, and minimum light intensity in the range of 15-90° is 50cd; maximum light intensity in the range of 0-20° is 400cd, and maximum light intensity in the range of 20-90° is 100cd;

[0017] Constant light intensity in night mode: minimum light intensity in the range of 5-15° is 30cd, and minimum light intensity in the range of 15-90° is 10cd; maximum light intensity in the range of 0-20° is 60cd, and maximum light intensity in the range of 20-90° is 60cd;

[0018] Flashing light intensity in night mode: minimum light intensity in the range of 5-15° is 30cd, minimum light intensity in the range of 5-90° is 10cd; maximum light intensity in the range of 0-20° is 60cd, maximum light intensity in the range of 20-90° is 60cd;

[0019] In sunrise mode, the light intensity of the indicator light changes linearly from low light intensity to high light intensity according to the ambient illumination. In sunset mode, the light intensity of the indicator light changes linearly from high light intensity to low light intensity according to the ambient illumination.

[0020] Compared with the prior art, the present invention has the following beneficial effects: the explosion-proof indicator device for the helicopter deck monitoring system provided by the present invention can convert the HMS status signal into color-coded visual information that is easily recognizable by helicopter pilots, thereby greatly improving the safety and ease of use of the explosion-proof indicator device. The present invention further improves the recognition effect by setting a light control module to adjust the current light intensity, and can avoid the glare hazard to helicopter pilots caused by high light intensity in night environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic cross-sectional structure diagram of the explosion-proof indicating device used in the helicopter deck monitoring system of the present invention;

[0022] Figure 2 This is a schematic structural diagram of the light source portion of the explosion-proof indicating device for the helicopter deck monitoring system of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of a reflective cup and a radiator of an explosion-proof indicating device for a helicopter deck monitoring system according to the present invention;

[0024] Figure 4 The present invention is a schematic diagram of the connection of inner and outer ring light source lamp beads of the explosion-proof indicating device used in the helicopter deck monitoring system.

[0025] The markings in the figure are:

[0026] 1. Shell; 2. Upper cover; 3. Light source board; 4. Lampshade; 5. Reflector cup; 6. Radiator; 7. Control circuit board; 8. Sealing ring; 9. Light control module; 10. Electroplating surface; 11. Outer ring light source; 12. Inner ring light source; 13. Threaded pressing ring; 14. Glue seal; 15. Cable entry device; 16. Terminal block. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] Figure 1 The figure is a schematic cross-sectional structure diagram of the explosion-proof indicating device used for the helicopter deck monitoring system of the present invention.

[0029] See also Figure 1 The explosion-proof indicating device for a helicopter deck monitoring system provided by the present invention comprises a shell 1, an upper cover 2 and a lampshade 4, wherein the lampshade 4 is fixed on the upper cover 2, and the upper cover 2 is fixed on the shell 1, and a light source board 3, a reflective cup 5, a radiator 6 and a control circuit board 7 are arranged in the shell 1, wherein the reflective cup 5 is mounted on the light source board 3, the light source board 3 is mounted on the radiator 6, and the control circuit board 7 is mounted on the shell 1, and there are at least two circles of light source rings on the light source board 3 with LED lamp beads of different colors arranged at intervals, and the control circuit board 7 is connected to the light source board 3, and controls the LED lamp beads of different colors on the light source board to operate in different light-emitting modes based on the received signal.

[0030] Figure 2 The present invention is a schematic structural diagram of the light source part of the explosion-proof indicating device used in the helicopter deck monitoring system.

[0031] Please continue to see Figure 2 The explosion-proof indicating device of the present invention has an outer ring light source 11 and an inner ring light source 12 on the light source board 3. The diameter of the outer ring light source 11 is larger than the bottom diameter of the reflective cup 5, and the diameter of the inner ring light source 12 is smaller than the inner diameter of the reflective cup 5. The reflective cup 5 is in the shape of a trumpet mouth, and its opening gradually increases upward. The outer side of the reflective cup 5 is an electroplated surface 10. Figure 3 The reflective cup 5 is mounted on the light source plate 3 , the outer ring light source 11 is outside the reflective cup 5 , and the inner ring light source 12 is inside the reflective cup 5 .

[0032] Preferably, the light source ring composed of the outer circle light source 11 and the inner circle light source 12 comprises blue, amber and red lamp beads arranged at intervals. Since the luminous efficiency of the blue lamp beads is much lower than that of the red and amber lamp beads, it is preferred that the number of amber lamp beads is the same as that of the red lamp beads, and the number of blue lamp beads is doubled, that is, twice the number of amber lamp beads. The three colors of lamp beads are independent of each other and are divided into three output paths. The lamp beads of a single color are connected in series and parallel. Taking the red lamp beads as an example, the outer circle light source is 2 in parallel and 7 in series, and the inner circle light source is 3 in parallel and 2 in series. Figure 4 As shown, the outer ring light source 11 and the inner ring light source 12 are connected in series, so that the current passing through the lamp beads of the inner ring light source 12 is 2 / 3 of the current of the lamp beads of the outer ring light source 11. By adjusting the current of the outer ring light source 11 and the inner ring light source 12, the light intensity of the outer ring light source 11 meets the requirements while the light intensity of the inner ring light source 12 is not too high.

[0033] The outer ring light source 11 is the main light source, and cooperates with the reflector cup 5 to achieve the requirement of light intensity greater than 400cd within the range of 5-15°. The inner ring light source 12 is the fill light source, and meets the requirement of light intensity greater than 100cd within the range of 15°-90°.

[0034] In the explosion-proof indicating device of the present invention, the light source board 3 is mounted on the radiator 6, the radiator 6 is mounted on the shell 1, the lampshade 4 is fixed on the upper cover 2, and the upper cover 2 is fixed on the shell 1. The lampshade 4, the upper cover 2 and the shell 1 form a cavity that accommodates the light source board 3, the reflective cup 5 and the radiator 6. The plane where the light source board 3 is located is not lower than the surface of the upper cover 2 to avoid optical influence. The lampshade 4 is fixed to the upper cover 2 by a threaded pressure ring 13, and the lampshade 4 and the upper cover 2 are sealed by a glue seal 14. A labyrinth structure and a sealing ring 8 are used to seal between the upper cover 2 and the shell 1, so that the lamp meets the protection level IP66 / IP67 requirements. The bottom of the shell 1 is provided with a wiring terminal 16 and a cable entry device 15 to meet the use requirements in harsh environments.

[0035] In the explosion-proof indicating device of the present invention, the light source board 3 is installed on the radiator 6, and the centers of the light source board 3 and the radiator 6 are through holes. The control circuit board 7 is installed at the bottom of the housing 1, and the light control module 9 is located above the control circuit board 7 and below the radiator 6, facing the through holes in the centers of the light source board 3 and the radiator 6. The light control module 9 is used to receive the ambient illumination, judge the current working environment of the indicator light through the received ambient illumination information, and transmit this signal to the control circuit board 7 for controlling the light intensity of the indicator light, so it is necessary to exclude the influence of the light itself on the light control module in terms of structure.

[0036] In the explosion-proof indicating device of the present invention, the control circuit board 7 comprises at least four signal input interfaces, three of which are used to receive HMS control signals, and one of which is used to receive light control signals. The control circuit board 7 controls the LED lamp beads of different colors on the light source board 3 to operate in a variety of light-emitting modes according to the HMS control signals. The control circuit board 7 controls the light intensity of the LED lamp beads according to the light control signals to achieve day / night mode switching.

[0037] As shown in the following table, a preferred embodiment of a method for controlling different indicator light modes based on four signal inputs is provided.

[0038]

[0039] The three HMS signal interfaces on the control circuit board 7 are directly connected to the helicopter deck monitoring system (HMS). The helicopter deck monitoring system (HMS) transmits the control signal to the control circuit board through the signal interface based on the current deck status. The control circuit board 7 selects the light color and light mode corresponding to the control signal according to the received signal, thereby realizing state switching of different colors and different modes.

[0040] The present invention is connected to the helicopter deck monitoring system (HMS) through three HMS signal interfaces, which can indicate the motion state of the helicopter deck, thereby assisting the helicopter pilot to land on the moving helicopter deck. First, during the helicopter approach, it is used to analyze the motion state of the helicopter deck to ensure that the helicopter deck is stable and lands safely. Secondly, it monitors wind speed and direction, air temperature and air pressure to ensure that the helicopter is stable and safe when parked on the helicopter deck.

[0041] The light control signal interface on the control circuit board 7 is directly electrically connected to the light control module 9 of the lamp. The light control module 9 generates a light control signal to the control circuit board 7 based on the current ambient illumination. The control circuit board 7 adjusts the current light intensity according to the received signal to avoid glare damage to helicopter pilots caused by high light intensity in night environment.

[0042] The following is a light control signal outputted based on the basic current ambient illumination of a preferred embodiment. When the ambient illumination is higher than 500 lux, it is in day mode (high light intensity); when the ambient illumination drops to 500 lux but has not reached 50 lux, it is in sunset mode; when the ambient illumination is lower than 50 lux, it is in night mode (low light intensity); when the ambient illumination exceeds 50 lux but has not reached 500 lux, it is in sunrise mode.

[0043] Sunrise mode and sunset mode are transition states, which are transitions from one setting to another without any obvious step changes. For example, sunrise mode is a linear change of the indicator light intensity from low intensity to high intensity according to the ambient illumination, and sunset mode is a linear change of the indicator light intensity from high intensity to low intensity according to the ambient illumination.

[0044] The table below gives the optimal light intensity for day mode and night mode.

[0045]

[0046] The purpose of the present invention is to provide direct visual information from the helicopter deck to the helicopter pilot, including the motion of the helicopter deck during landing and the potential unsafe wind conditions after landing. The device communicates this to the pilot by means of a constant light mode or a flashing mode, and three colors (red, amber and blue) displayed in both modes. The constant light mode is on before the helicopter lands, and the flashing mode is switched after landing.

[0047] The blue light is always on, indicating that it is safe to land; the amber light is always on, indicating that there is a potential risk and you should land with caution; the red light is dangerous and you cannot land. The blue light flashes, indicating that the wind conditions are good; the amber light flashes, indicating that there is a potential risk; and the red light flashes, indicating that the wind conditions are bad.

[0048] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the definition of the claims.

Claims

1. An explosion-proof indicating device for a helicopter deck monitoring system, comprising a housing (1), an upper cover (2) and a lampshade (4), wherein the lampshade (4) is fixed on the upper cover (2), and the upper cover (2) is fixed on the housing (1), and a light source board (3), a reflective cup (5), a heat sink (6) and a control circuit board (7) are arranged in the housing (1), characterized in that: The reflective cup (5) is mounted on a light source board (3), the light source board (3) is mounted on a heat sink (6), the control circuit board (7) is mounted on a housing (1), the light source board (3) is provided with at least two light source rings in which LED lamp beads of different colors are arranged at intervals, the control circuit board (7) is connected to the light source board (3), and controls the LED lamp beads of different colors on the light source board (3) to operate in different light emission modes based on received signals; An outer ring light source (11) and an inner ring light source (12) are provided on the light source plate (3), wherein the outer ring light source (11) is located outside the reflective cup (5), and the inner ring light source (12) is located inside the reflective cup (5); The reflective cup (5) is in the shape of a trumpet, and its opening gradually increases upwards; the diameter of the outer ring light source (11) is larger than the bottom diameter of the reflective cup (5), and the diameter of the inner ring light source (12) is smaller than the inner diameter of the reflective cup (5); The outer ring light source (11) and the inner ring light source (12) are connected in series, the outer ring light source (11) is a main light source, and the light intensity in the range of 5-15° is greater than 400 cd, and the inner ring light source (12) is a supplementary light source, and the light intensity in the range of 15°-90° is greater than 100 cd; The light source board (3) is mounted on the radiator (6); the centers of the light source board (3) and the radiator (6) are through holes; the control circuit board (7) is mounted on the bottom of the housing (1); a light control module (9) is provided above the control circuit board (7); the light control module (9) is located below the radiator (6) and directly faces the through holes in the centers of the light source board (3) and the radiator (6); the light control module (9) is used to receive ambient illumination and judge the current working environment of the indicator light based on the received ambient illumination information; The control circuit board (7) comprises at least four signal input interfaces, three of which are used to receive HMS control signals, and one of which is used to receive a light control signal from a light control module (9); the control circuit board (7) controls the LED lamp beads of different colors on the light source board (3) to operate in a variety of light emission modes according to the HMS control signal, and the control circuit board (7) controls the light intensity of the LED lamp beads according to the light control signal to achieve day / night mode switching; When the ambient illumination is higher than 500 lux, it is day mode; when the ambient illumination drops to 500 lux but has not reached 50 lux, it is sunset mode; when the ambient illumination exceeds 50 lux but has not reached 500 lux, it is sunrise mode; Constant light intensity in day mode: minimum light intensity is 400cd in the range of 5-15°, and maximum light intensity is 200cd in the range of 20-90°; In sunrise mode, the light intensity of the indicator light changes linearly from low light intensity to high light intensity according to the ambient illumination. In sunset mode, the light intensity of the indicator light changes linearly from high light intensity to low light intensity according to the ambient illumination.

2. The explosion-proof indicating device for helicopter deck monitoring system according to claim 1, characterized in that: The outer circle light source (11) and the inner circle light source (12) are respectively composed of blue lamp beads, amber lamp beads and red lamp beads arranged at intervals, the number of the amber lamp beads is the same as the number of the red lamp beads, and the number of the blue lamp beads is twice the number of the amber lamp beads.

3. The explosion-proof indicating device for helicopter deck monitoring system according to claim 2, characterized in that: The three colors of lamp beads are independent of each other and are divided into three output paths; the lamp beads of a single color are connected in series and parallel, so that the current passing through the inner circle light source (12) lamp beads is 2 / 3 of the current of the outer circle light source (11) lamp beads.

4. The explosion-proof indicating device for a helicopter deck monitoring system according to claim 1, characterized in that: The lampshade (4) is fixed to the upper cover (2) via a threaded pressing ring (13); the lampshade (4) and the upper cover (2) are sealed via a glue seal (14); the upper cover (2) and the housing (1) are sealed via a sealing ring (8); and the plane where the light source panel (3) is located is not lower than the surface of the upper cover (2).

5. The explosion-proof indicating device for helicopter deck monitoring system according to claim 1, characterized in that: When the ambient illumination is lower than 50 lux, it is in night mode; Constant light intensity in day mode: minimum light intensity in the range of 15-90° is 100cd; maximum light intensity in the range of 0-20° is 800cd; Flashing light intensity in day mode: minimum light intensity in the range of 5-15° is 200cd, and minimum light intensity in the range of 15-90° is 50cd; maximum light intensity in the range of 0-20° is 400cd, and maximum light intensity in the range of 20-90° is 100cd; Constant light intensity in night mode: minimum light intensity in the range of 5-15° is 30cd, and minimum light intensity in the range of 15-90° is 10cd; maximum light intensity in the range of 0-20° is 60cd, and maximum light intensity in the range of 20-90° is 60cd; Flashing light intensity in night mode: minimum light intensity in the range of 5-15° is 30cd, and minimum light intensity in the range of 5-90° is 10cd; maximum light intensity in the range of 0-20° is 60cd, and maximum light intensity in the range of 20-90° is 60cd.

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