A smart alarm device for determining the minimum safe altitude for ejection parachuting

Abstract

This invention discloses an intelligent assessment and alarm device for the minimum safe altitude of ejection parachuting, comprising a mounting plate, a monitoring box, and a support leg mechanism. The monitoring box is mounted on the lower end face of the mounting plate, with mounting holes at both ends of the mounting plate. The support leg mechanism includes a first support leg assembly and a second support leg assembly, which are symmetrically mounted on both ends of the mounting plate. Distance sensors are mounted on both sides of the lower end face of the monitoring box, and an infrared rangefinder is mounted in the center of the lower end face of the monitoring box. A controller and a signal transceiver are installed inside the monitoring box. This invention features a novel structural design and a high degree of intelligence. Installed below the ejection parachute, it can quickly monitor and assess the minimum safe altitude of ejection parachuting and immediately feed the signal back to the parachutist, ensuring the safety of the ejection parachutist.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of parachute height evaluation, in particular to a parachute minimum safe height intelligent evaluation and alarm device. BACKGROUND

[0002] Parachuting is a sport in which a parachutist ascends to a high altitude by an aircraft, balloon or other equipment, and then jumps down from the aircraft, balloon or other equipment, or jumps down from a steep cliff or high ground, and completes various specified movements before and after the parachute is opened by air power and the parachute, and lands safely in a designated area by using the parachute to slow down the descent speed. According to the nature of the action, parachuting is divided into combat parachuting, training parachuting and task parachuting; according to the action, parachuting is divided into active parachuting and forced parachuting; according to the natural geographical conditions of the landing point, parachuting is divided into mountain parachuting, forest parachuting, water network and paddy field parachuting, hot area parachuting, cold area parachuting, water parachuting and plateau parachuting; according to the parachute opening method, parachuting is divided into rope-pulled parachute jumping, hand-pulled parachute jumping and parachute gun parachute jumping. In addition, parachuting can also be classified according to the type of aircraft, parachuting height and parachute opening time.

[0003] At present, the parachutist determines the height for parachute opening according to his own experience during the parachute landing process, which is prone to cause a large error and has low safety. Therefore, it is necessary to design a parachute minimum safe height intelligent evaluation and alarm device. SUMMARY

[0004] The present application aims to provide a parachute minimum safe height intelligent evaluation and alarm device to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a parachute minimum safe height intelligent evaluation and alarm device, comprising a mounting plate, a monitoring box and a support leg mechanism, the monitoring box is installed on the lower end face of the mounting plate, and mounting holes are formed at both ends of the mounting plate;

[0006] The support leg mechanism comprises a first support leg assembly and a second support leg assembly, the first support leg assembly and the second support leg assembly are symmetrically installed at both ends of the mounting plate, distance sensors are installed on both sides of the lower end face of the monitoring box, an infrared range finder is installed on the middle of the lower end face of the monitoring box, a controller and a signal transceiver are installed in the inner cavity of the monitoring box, and the distance sensors, the infrared range finder and the signal transceiver are connected to the controller respectively.

[0007] It also comprises an image acquisition camera, which is installed on one side of the distance sensor.

[0008] Preferably, the intelligent assessment and alarm device for minimum safe altitude in ejection parachuting provided in this application includes a central processing unit (CPU), a sensor signal acquisition unit, an infrared signal acquisition unit, an alarm unit, an image signal acquisition unit, an image processing unit, and a signal transmission unit installed in the controller. The input terminals of the sensor signal acquisition units are connected to distance sensors, and their output terminals are connected to the CPU. The input terminals of the infrared signal acquisition units are connected to infrared rangefinders, and their output terminals are connected to the CPU. The input terminals of the image signal acquisition units are connected to image acquisition cameras, and their output terminals are connected to the CPU via the image processing unit. The alarm unit is connected to the CPU. The CPU is connected to a transceiver via the signal transmission unit, and the transceiver is connected to the parachutist's headset and a backend monitoring terminal. The sensor signal acquisition unit is used to acquire distance sensor signals; the infrared signal acquisition unit is used to acquire infrared ranging signals; and the image processing unit is used to perform distortion-free processing on the acquired images.

[0009] Preferably, the intelligent assessment and alarm device for minimum safe altitude of ejection parachute provided in this application further includes a GPS / BeiDou positioning unit, which is connected to a central processing unit and is used to locate the ejection parachute position in real time.

[0010] Preferably, the intelligent assessment and alarm device for minimum safe altitude of ejection parachute provided in this application includes an operational amplifier A and an operational amplifier B. The positive input terminal of operational amplifier A is connected to the operational amplifier A via resistor A, the negative input terminal of operational amplifier A is grounded via resistor B, the control terminal of operational amplifier A is connected to the output terminal via resistor C, a resistor D is connected between the output terminal of operational amplifier A and the positive input terminal of operational amplifier B, the negative input terminal of operational amplifier B is grounded via resistor E, and the output terminal of operational amplifier B is connected to the signal output terminal via resistor F.

[0011] Preferably, the intelligent assessment and alarm device for minimum safe altitude of ejection parachute provided in this application has the first support leg assembly and the second support leg assembly having completely identical structures, including a support leg body and a shock absorption assembly. The shock absorption assembly is installed between the support leg body and the mounting plate. The shock absorption assembly includes an upper sleeve, a lower sleeve, a damping cylinder, a damping rod, a guide post, and a shock absorption spring. The damping cylinder is installed inside the lower sleeve. The bottom end of the damping rod is connected to the damping cylinder. The upper end of the damping rod is connected to the bottom end of the guide post. The upper end of the guide post is placed inside the upper sleeve. The shock absorption spring is sleeved outside the guide post.

[0012] Preferably, the intelligent assessment and alarm device for minimum safe altitude of ejection parachuting provided in this application includes the following steps in its usage:

[0013] A. During ejection parachute landing, the distance sensor collects the distance between the bottom of the ejection parachute and the ground in real time; at the same time, the infrared rangefinder measures the distance between the bottom of the ejection parachute and the ground in real time, and the collected distance signal is amplified and transmitted to the controller.

[0014] B. The image acquisition camera acquires real-time image signals around the ejection parachute, processes them, and transmits them to the controller;

[0015] C. The controller receives distance signals and image signals, converts the collected distance signals into specific height values, and compares them with the preset minimum safe height.

[0016] D. If the distance between the ejection parachute and the ground is within the minimum safe altitude range, an alarm signal should be immediately sent to the parachutist to remind them to open the parachute.

[0017] E. Simultaneously, distance signals, position signals, and image signals are fed back to the background monitoring terminal in real time.

[0018] Preferably, the intelligent assessment and alarm device for minimum safe altitude of ejection parachuting provided in this application includes an image processing unit that processes images using the following method:

[0019] a. First, perform histogram equalization on the image, then remove background noise;

[0020] b. Then, noise removal is performed on the image;

[0021] Noise removal is performed using an image interpolation function, the formula of which is:

[0022] C' = A*T + D*(1-T), where C' represents the output image pixel after denoising, A represents the current image pixel to be processed, T represents the logical balance variable, and D represents the noise smoothing value of the current pixel to be processed.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] (1) The present invention has a novel structural design and a high degree of intelligence. When installed below the ejection parachute, it can quickly monitor and assess the minimum safe altitude of the ejection parachute and immediately feed the signal back to the parachutist to ensure the safety of the ejection parachutist.

[0025] (2) The sensor signal acquisition unit used in this invention can amplify the distance signal without distortion, which can improve the monitoring accuracy of the minimum safe height.

[0026] (3) The support leg assembly used in this invention has a supporting and buffering function, which can protect the monitoring box after the ejected parachute falls to the ground. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the support leg assembly structure of the present invention;

[0029] Figure 3 This is a block diagram illustrating the control principle of the present invention;

[0030] Figure 4 This is a circuit diagram of the sensor signal acquisition unit of the present invention;

[0031] Figure 5 This is a flowchart of the workflow of the present invention;

[0032] In the diagram: 1. Mounting plate; 2. Monitoring box; 3. First support leg assembly; 4. Second support leg assembly; 5. Distance sensor; 6. Infrared rangefinder; 7. Controller; 8. Signal transceiver; 9. Image acquisition camera; 10. Central processing unit; 11. Sensor signal acquisition unit; 12. Infrared signal acquisition unit; 13. Alarm unit; 14. Image signal acquisition unit; 15. Image processing unit; 16. Signal transmission unit; 17. Parachutist headset; 18. Back-end monitoring terminal; 19. GPS / BeiDou positioning unit; 20. Support leg body; 21. Upper sleeve; 22. Lower sleeve; 23. Damping sleeve; 24. Damping rod; 25. Guide column; and 26. Shock-absorbing spring. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1-5 The present invention provides a technical solution: an intelligent assessment and alarm device for the minimum safe altitude of ejection parachute, comprising a mounting plate 1, a monitoring box 2 and a support leg mechanism, wherein the monitoring box 2 is mounted on the lower end face of the mounting plate 1, and mounting holes are respectively opened at both ends of the mounting plate 1;

[0035] The support leg mechanism includes a first support leg assembly 3 and a second support leg assembly 4, which are symmetrically mounted on both ends of the mounting plate 1. Distance sensors 5 are respectively installed on both sides of the lower end face of the monitoring box 2, and an infrared rangefinder 6 is installed in the middle of the lower end face of the monitoring box 2. A controller 7 and a signal transceiver 8 are installed inside the monitoring box 2. The distance sensors 5, the infrared rangefinder 6, and the signal transceiver 8 are respectively connected to the controller 7.

[0036] It also includes an image acquisition camera 9, which is mounted on one side of the distance sensor 5.

[0037] In this invention, the controller 7 is equipped with a central processing unit 10, a sensor signal acquisition unit 11, an infrared signal acquisition unit 12, an alarm unit 13, an image signal acquisition unit 14, an image processing unit 15, and a signal transmission unit 16. The input terminals of the sensor signal acquisition unit 11 are connected to a distance sensor 5, and the output terminals of the sensor signal acquisition unit 11 are connected to the central processing unit 10. The input terminals of the infrared signal acquisition unit 12 are connected to an infrared rangefinder 6, and the output terminals of the infrared signal acquisition unit 12 are connected to the central processing unit 10. The input terminals of the image signal acquisition unit 14 are connected to an image acquisition camera 9, and the output terminals of the image signal acquisition unit 14 transmit images... The processing unit 15 is connected to the central processing unit 10, the alarm unit 13 is connected to the central processing unit 10, the central processing unit 10 is connected to the signal transceiver 8 through the signal transmission unit 16, and the signal transceiver 8 is connected to the parachutist's headset 17 and the background monitoring terminal 18 respectively; wherein, the sensor signal acquisition unit is used to acquire distance sensor signals; the infrared signal acquisition unit is used to acquire infrared ranging signals; the image processing unit is used to perform distortion-free processing on the acquired images; it also includes a GPS / BeiDou positioning unit 19, which is connected to the central processing unit 10 and is used to locate the ejection parachute position in real time.

[0038] The sensor signal acquisition unit includes operational amplifiers A1b and B2b. The positive input terminal of operational amplifier A1b is connected to the sensor signal acquisition terminal through resistor A1a, and the negative input terminal of operational amplifier A1b is grounded through resistor B2a. The control terminal of operational amplifier A1b is connected to the output terminal through resistor C3a. Resistor D4a is connected between the output terminal of operational amplifier A1b and the positive input terminal of operational amplifier B2b. The negative input terminal of operational amplifier B2b is grounded through resistor E5a, and the output terminal of operational amplifier B2b is connected to the signal output terminal through resistor F6a. The sensor signal acquisition unit used in this invention can amplify distance signals without distortion, thereby improving the monitoring accuracy of the minimum safe altitude.

[0039] Furthermore, in this invention, the first support leg assembly 3 and the second support leg assembly 4 have completely identical structures, including a support leg body 20 and a shock-absorbing assembly. The shock-absorbing assembly is installed between the support leg body 20 and the mounting plate 1. The shock-absorbing assembly includes an upper sleeve 21, a lower sleeve 22, a damping cylinder 23, a damping rod 24, a guide post 25, and a shock-absorbing spring 26. The damping cylinder 23 is installed inside the lower sleeve 22. The bottom end of the damping rod 24 is connected to the damping cylinder 23, and the upper end of the damping rod 24 is connected to the bottom end of the guide post 25. The upper end of the guide post 25 is placed inside the upper sleeve 21, and the shock-absorbing spring 26 is sleeved on the outside of the guide post 25. The support leg assembly used in this invention has a supporting and buffering function, which can protect the monitoring box after the ejected parachute falls to the ground.

[0040] Working principle: The method of using this invention includes the following steps:

[0041] A. During ejection parachute landing, the distance sensor collects the distance between the bottom of the ejection parachute and the ground in real time; at the same time, the infrared rangefinder measures the distance between the bottom of the ejection parachute and the ground in real time, and the collected distance signal is amplified and transmitted to the controller.

[0042] B. The image acquisition camera acquires real-time image signals around the ejection parachute, processes them, and transmits them to the controller;

[0043] C. The controller receives distance signals and image signals, converts the collected distance signals into specific height values, and compares them with the preset minimum safe height.

[0044] D. If the distance between the ejection parachute and the ground is within the minimum safe altitude range, an alarm signal should be immediately sent to the parachutist to remind them to open the parachute.

[0045] E. Simultaneously, distance signals, position signals, and image signals are fed back to the background monitoring terminal in real time.

[0046] The image processing unit uses the following processing method:

[0047] a. First, perform histogram equalization on the image, then remove background noise;

[0048] b. Then, noise removal is performed on the image;

[0049] Noise removal is performed using an image interpolation function, the formula of which is:

[0050] C' = A*T + D*(1-T), where C' represents the number of pixels in the output image after denoising, A represents the number of pixels to be processed in the current image, T represents the logical balancing variable, and D represents the noise smoothing value of the current pixel to be processed. The image processing unit used reduces the global brightness difference of the image, enhances the image contrast, effectively suppresses noise, and improves the clarity of image acquisition.

[0051] In summary, this invention features a novel structural design and a high degree of intelligence. Installed below the ejection parachute, it can quickly monitor and assess the minimum safe altitude for ejection and immediately relay signals to the parachutist, ensuring their safety.

[0052] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The scope of protection of this invention does not involve any improvement to the software and methods.

[0053] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art.

[0054] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0055] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0056] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A kind of intelligent evaluation alarm device of ejecting parachute minimum safety height, including mounting plate (1), monitoring box (2) and support leg mechanism, it is characterized in that: The monitoring box (2) is installed on the lower end surface of the mounting plate (1), and mounting holes are respectively formed at the two ends of the mounting plate (1); The support leg mechanism comprises a first support leg assembly (3) and a second support leg assembly (4), the first support leg assembly (3) and the second support leg assembly (4) are symmetrically installed at the two ends of the mounting plate (1), distance sensors (5) are respectively installed on the two sides of the lower end surface of the monitoring box (2), an infrared range finder (6) is installed on the middle of the lower end surface of the monitoring box (2), a controller (7) and a signal transceiver (8) are installed in the inner cavity of the monitoring box (2), the distance sensors (5), the infrared range finder (6) and the signal transceiver (8) are respectively connected to the controller (7); An image acquisition camera (9) is further included, and the image acquisition camera (9) is installed on one side of the distance sensor (5); The controller (7) is internally provided with a central processing unit (10), a sensing signal acquisition unit (11), an infrared signal acquisition unit (12), an alarm unit (13), an image signal acquisition unit (14), an image processing unit (15) and a signal transmission unit (16), the input ends of the sensing signal acquisition unit (11) are respectively connected to the distance sensors (5), the output end of the sensing signal acquisition unit (11) is connected to the central processing unit (10), the input end of the infrared signal acquisition unit (12) is connected to the infrared range finder (6), the output end of the infrared signal acquisition unit (12) is connected to the central processing unit (10), the input end of the image signal acquisition unit (14) is connected to the image acquisition camera (9), the output end of the image signal acquisition unit (14) is connected to the central processing unit (10) through the image processing unit (15), the alarm unit (13) is connected to the central processing unit (10), the central processing unit (10) is connected to the signal transceiver (8) through the signal transmission unit (16), and the signal transceiver (8) is respectively connected to a parachuting personnel earphone (17) and a background monitoring terminal (18); wherein the sensing signal acquisition unit is used for acquiring distance sensor signals; the infrared signal acquisition unit is used for acquiring infrared ranging signals; and the image processing unit is used for performing lossless processing on the collected images. A GPS / Beidou positioning unit (19) is further included, the GPS / Beidou positioning unit (19) is connected to the central processing unit (10), and the GPS / Beidou positioning unit (19) is used for real-time positioning of the ejection parachuting position.

2. The intelligent judgment and alarm device for the minimum safety height of the parachute jump according to claim 1, characterized in that: The sensing signal acquisition unit comprises an operational amplifier A (1b) and an operational amplifier B (2b), the positive input end of the operational amplifier A (1b) is connected to the sensing signal acquisition end through a resistor A (1a), the negative input end of the operational amplifier A (1b) is grounded through a resistor B (2a), the control end of the operational amplifier A (1b) is connected to the output end through a resistor C (3a), a resistor D (4a) is connected between the output end of the operational amplifier A (1b) and the positive input end of the operational amplifier B (2b), the negative input end of the operational amplifier B (2b) is grounded through a resistor E (5a), and the output end of the operational amplifier B (2b) is connected to the signal output end through a resistor F (6a).

3. The intelligent judgment and alarm device for the minimum safety height of the ejection parachute according to claim 1, characterized in that: The first support leg assembly (3) and the second support leg assembly (4) are completely identical in structure and comprise a support leg body (20) and a damping assembly, the damping assembly is installed between the support leg body (20) and the mounting plate (1), and the damping assembly comprises an upper sleeve (21), a lower sleeve (22), a damping cylinder (23), a damping rod (24), a guide column (25) and a damping spring (26), the damping cylinder (23) is installed in the lower sleeve (22), the bottom end of the damping rod (24) is connected with the damping cylinder (23), the upper end of the damping rod (24) is connected with the bottom end of the guide column (25), the upper end of the guide column (25) is arranged in the upper sleeve (21), and the damping spring (26) is arranged outside the guide column (25).

4. The use of the intelligent parachute minimum safety height evaluation and alarm device of claim 1, characterized in that: The use method thereof comprises the following steps: A, when the parachute jumps, the distance sensor collects the distance between the bottom of the parachute and the ground in real time; at the same time, the infrared range finder measures the distance between the bottom of the parachute and the ground in real time, and the collected distance signal is amplified and transmitted to the controller; B, the image acquisition camera collects image signals around the parachute in real time, and transmits the processed signals to the controller; C, the controller receives the distance signal and the image signal, converts the collected distance signal into a specific height value, and compares it with the preset minimum safe height; D, if the distance between the parachute and the ground is within the minimum safe height range, an alarm signal is immediately sent to the parachute person to remind the parachute person to open the parachute; E, at the same time, the distance signal, position signal and image signal are fed back to the background monitoring terminal in real time; The image processing unit processes the image as follows: a, first, the image is processed by histogram equalization, and then the background noise is removed; b, then, the image is processed by noise removal; Wherein, the noise removal is processed by image interpolation function operation, and the function formula is: C'=A*T+D*(1-T), wherein C' represents the output de-noised image pixel, A represents the current image pixel to be processed, T represents a logic balance variable, and D represents the noise smoothing value of the current pixel to be processed.

Images