CN111846246B - Portable single reverse-spraying soft landing safety protection device and using method thereof - Google Patents
Portable single reverse-spraying soft landing safety protection device and using method thereof Download PDFInfo
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- CN111846246B CN111846246B CN202010649912.7A CN202010649912A CN111846246B CN 111846246 B CN111846246 B CN 111846246B CN 202010649912 A CN202010649912 A CN 202010649912A CN 111846246 B CN111846246 B CN 111846246B
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000005507 spraying Methods 0.000 title claims abstract description 17
- 238000002347 injection Methods 0.000 claims abstract description 25
- 239000007924 injection Substances 0.000 claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims description 41
- 239000003795 chemical substances by application Substances 0.000 claims description 21
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 claims description 18
- 238000002955 isolation Methods 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 15
- AXZAYXJCENRGIM-UHFFFAOYSA-J dipotassium;tetrabromoplatinum(2-) Chemical compound [K+].[K+].[Br-].[Br-].[Br-].[Br-].[Pt+2] AXZAYXJCENRGIM-UHFFFAOYSA-J 0.000 claims description 12
- 229910001487 potassium perchlorate Inorganic materials 0.000 claims description 12
- VBIXEXWLHSRNKB-UHFFFAOYSA-N ammonium oxalate Chemical compound [NH4+].[NH4+].[O-]C(=O)C([O-])=O VBIXEXWLHSRNKB-UHFFFAOYSA-N 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 9
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 claims description 9
- 229960004889 salicylic acid Drugs 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 239000006096 absorbing agent Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000007800 oxidant agent Substances 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 239000004753 textile Substances 0.000 claims description 3
- 238000012549 training Methods 0.000 abstract description 8
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- 238000006243 chemical reaction Methods 0.000 description 3
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- 239000004744 fabric Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
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- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D17/00—Parachutes
- B64D17/78—Parachutes in association with other load-retarding apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D17/00—Parachutes
- B64D17/40—Packs
- B64D17/52—Opening, e.g. manual
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D17/00—Parachutes
- B64D17/40—Packs
- B64D17/52—Opening, e.g. manual
- B64D17/54—Opening, e.g. manual automatic
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Emergency Lowering Means (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
Abstract
The invention discloses a portable single reverse-spraying soft landing safety protection device and a using method thereof. The method of combining the parachute with the inflatable coat and the air injection device is adopted, the parachute is opened at a low altitude, air is reversely injected when the parachute approaches the ground, and the landing speed is reduced to a greater extent; meanwhile, part of the air is filled into the wearing coat, so that the landing impact force is reduced. The invention has higher reliability, lower operation difficulty, no need of professional training and strong popularization and realizability; the landing speed and the controllable flight attitude can be obviously reduced, and the risk of parachuting is reduced; the novel high-rise rescue device has wide future application prospect, can be popularized in a large range, is safe and environment-friendly, and can be used for general aviation equipment, high-rise rescue equipment, safety protection devices and the like.
Description
Technical Field
The invention relates to a portable single reverse-spraying soft landing safety protection device and a using method thereof, belonging to the field of general aviation equipment and safety guarantee equipment for accident rescue.
Background
In recent years, general aviation equipment is rapidly developed in the fields of medical health, emergency rescue and relief, meteorological exploration, ocean monitoring, scientific experiments, remote sensing mapping, educational training, tourism and the like, for example, general aviation industry development planning (2018-, the personnel safety of the low-altitude flying civil aircraft is particularly important; in addition, the safety protection of high-altitude operation personnel represented by high-voltage line inspection and the safety protection of high-rise building personnel for emergency escape in accidents need a small portable single reverse-injection type soft landing safety protection device.
In conventional high-altitude safety protection, a parachute is a common air safety lifesaving and stabilizing speed reducing device, and the parachute is a deployable type pneumatic speed reducer which is inflated and deployed relative to air movement by utilizing the principle of air resistance and is mainly made of flexible fabric. The parachute is an important equipment for the combat and training of airborne soldiers, the lifesaving and training of aerospace personnel, the training, match and performance of parachutists, the airdrop of goods and materials and the recovery of aircrafts. However, when the common parachute is used at high altitude, the parachute can play an effective deceleration role; however, the common parachute has the defects that the size is large, the carrying is not convenient for individuals, the parachute cannot be effectively opened due to short landing time in low-altitude flight, professional training is needed, and the safety guarantee effect is difficult to play in low-altitude flight.
The present invention has been studied based on the following problems:
(1) the general aviation is fast in development, performs in flight and performs tasks in low altitude, and is characterized in that the low altitude flies and people are exposed outside; the problems that arise are: on the one hand, protection is needed; on the other hand, the device means that the time for landing is very short once an accident occurs;
(2) the invention provides a high-rise building escape facility with limited facilities, and aims at public safety to design and develop a portable, easy-to-operate and multipurpose soft landing device;
(3) the large parachute is large in size and inconvenient to carry by a person; professional training is required, and the universality is not high; the large parachute cannot be opened in time due to short landing time on the ground, so that the parachute cannot play an effective role.
Disclosure of Invention
The invention aims at providing a portable single reverse-spraying soft landing safety protection device and a using method thereof, a method of combining a parachute with an inflatable coat and an air injection device is adopted, the parachute is opened at a low altitude, reverse air injection is carried out when the parachute approaches the ground, and the landing speed is reduced to a greater extent; meanwhile, part of the air is filled into the wearing coat, so that the landing impact force is reduced.
The invention provides a portable soft landing safety protection device which is used for a small parachute in a directional matching manner and is matched with an inflatable coat and assisted in speed reduction and supercritical fluid jet. The supercritical fluid is a third fluid existing separately from a gas and a liquid. When the temperature and pressure reach the critical point, the substance enters a supercritical state, in which the substance appears as a state that is neither a gas nor a liquid, called a supercritical fluid. Due to supercritical CO2The fluid has the characteristics of no toxicity, no pollution, difficult combustion, low price, chemical inertness and the like, has the characteristic of supercritical fluid, and is an ideal gas raw material of the jet parachute.
The invention provides a portable single reverse-spraying soft landing safety protection device, which consists of a wearing system, a containing system, an parachute landing system, an air injection reverse-pushing system and a control system, wherein the wearing system is connected with the containing system through a pipeline;
the wearing system comprises an inflatable vest, a starting button, an air inlet channel, a connecting lock catch and a separating button; the starting button is positioned on the right shoulder strap of the inflatable vest, the separating button is positioned on the left shoulder strap of the inflatable vest and is connected to the control system by a wire, and the air inlet channel is positioned on the lower part of the back side of the inflatable vest and is connected with the high-pressure air bottle. The connecting lock catches are positioned between the inflatable vest and the backpack, the two lock catches are arranged in parallel, and the high-density knitted composite material and the rivets are used for connecting the inflatable vest and the backpack.
The containing system comprises a backpack and an isolation plate; the backpack is used as a storage body of the device, is a portable outer layer storage device of the single reverse jet soft landing device, and is an integrated carrier of an parachute landing system, an air jet reverse thrust system and a control system; the isolation board is arranged in the backpack and is positioned between the parachute landing system and the air injection thrust reverser to wrap the control system.
The parachute system comprises a parachute bag and a manual parachute opening button, the parachute bag is fixed on the upper layer of the backpack, can be connected by high-density knitted composite materials and rivets, and is stably supported by the isolation plate; the parachute opening is vertically upward and is positioned at the top of the backpack. The manual umbrella opening button is arranged in the center of the left side of the outer surface of the backpack through a fixing bolt.
The control system is arranged in the isolation board, is positioned between the parachute landing system and the jet-propelled thrust reversal system, and consists of a sensor signal processing module, a speed sensor, a laser ranging sensor and a heating control module, and the control system is connected with the parachute landing system and the jet-propelled thrust reversal system through electric wires. The sensor signal processing module, the speed sensor and the heating control module are fixed by screws in the isolation plate. The right side of the outer part of the backpack is provided with a manual air injection key, and the manual air injection key is arranged on the right side of the outer surface of the backpack by a fixing bolt. The laser ranging sensor is installed on the right side of the outer surface of the backpack through a spherical cover and is located on the lower portion of the manual air injection key.
The air injection reverse thrust system is positioned at the bottom layer in the backpack, a separation plate is arranged above the air injection reverse thrust system and used for separating the parachute bag from the control system, the interior of the air injection reverse thrust system comprises a high-pressure air bottle, a first nozzle and a second nozzle, and a diaphragm is arranged in the nozzle; the jet thrust reverser is connected to the control system by wires. The high-pressure gas cylinder is transversely arranged and filled with supercritical CO2As the jet gas, the two ends of the high-pressure gas cylinder are provided with fixing bolts to be connected with the side wall fixing nuts to play a role in fixing, the lower side of the high-pressure gas cylinder is provided with double nozzles which are vertically downward, and the inside of each nozzle is pasted with a diaphragm and is connected with the inflatable vest through an air inlet channel.
The high-pressure gas cylinder is internally provided with a potassium perchlorate heating agent, the components of the potassium perchlorate heating agent comprise potassium perchlorate, ammonium oxalate and salicylic acid, wherein the potassium perchlorate is an oxidant, the ammonium oxalate and the salicylic acid are reducing agents, and the chemical reaction based on oxygen balance can refer to:
9KCLO4+2C2H8N2O4+2C7H6O3→9KCL+2N2+14H2O+18CO2
the heating agent comprises the following components in percentage by weight: and (3) potassium perchlorate: 70%, ammonium oxalate: 20%, salicylic acid: 10 percent, the heating agent is filled in the high-pressure gas cylinder, and the moisture-proof and antistatic effects are good.
The inflatable vest and the parachute bag are made of textile materials, partial metal pieces and rubber plastic pieces. Compact structure, high strength, softness, good elasticity and small non-uniform elongation. Has the properties of lightness, thinness, softness, higher elastic modulus, elongation at break less than that of the umbrella coat fabric and the like. The connecting material of each part of the backpack has the characteristics of high required strength, good lubrication, uniform and stable twist, fire resistance, water resistance, wear resistance, ventilation and the like, conforms to human engineering, is tightly attached to the body of a user, is easy to operate and is convenient to put on and take off.
The pressure-bearing supercritical CO of the high-pressure gas cylinder can reach 70MPa at present2The critical pressure is 7MPa, the bearing pressure can be completely met, the carried high-pressure gas cylinder can be small in size and large in gas storage capacity, the device can be miniaturized and portable, and CO can be used for storing gas2The safety and no pollution are realized; to prevent CO2Spraying heat absorbing agent to freeze the seal, and heating agent is arranged in the high-pressure gas cylinder to heat CO2Heating to form supercritical fluid. The existence of the diaphragm at the nozzle can ensure that the nozzle is kept in a closed state before high-pressure gas is not generated in the tank body.
The device control system comprises speed sensor, laser range finding sensor and sensor signal processing module and heating control module, constantly gathers flight data at descending process speed sensor, laser range finding sensor, reaches the high back of parachute-opening, and sensor signal processing module opens the parachute system, carries out the one-level speed reduction and adjusts the descending gesture. When the supercritical fluid enters the ground, the heating control module starts the heating device, the supercritical fluid is vertically downwards sprayed by the double nozzles before falling to the ground, and the purpose of stable falling to the ground is achieved by secondary speed reduction.
The speed sensor used by the invention is a ZLS-Px speed sensor, and has 2 orthogonal measurement signal outputs which can measure the speed in the horizontal direction and the vertical direction, so that the speed sensor can sense whether a measured body stops or not and can sense the movement direction of the measured body. The sensor is fixed in the stable backpack, is a non-contact sensor, and can identify the movement direction besides measuring the speed. Certain position spaces are left above, below, on the left and right of the sensor, so that the sensor is prevented from colliding with surrounding parts in the moving process to cause damage.
The laser ranging sensor used in the invention is a DIMETIX FLS-CH30 laser ranging sensor, the measuring distance can reach 500 meters, and the typical precision can reach 1.5 millimeters. The internal heater can make the sensor work normally in the low temperature environment within minus 40 ℃. The firm aluminum alloy shell ensures that the protection grade reaches IP65, and can be used in various complex fields and outdoors. The working principle is as follows: the measurement is performed using the principle of phase comparison. The laser sensor emits visible laser beams with different frequencies, receives scattered laser returned from a measured object, compares the received laser signals with reference signals, and calculates the distance between objects corresponding to corresponding phase offsets by using the microprocessor, so that the millimeter-scale measurement precision can be achieved.
The invention provides a use method of the portable single reverse-spraying soft landing safety protection device, which comprises the following steps:
(1) confirming that each module is normal before use; the high-pressure gas cylinder is sealed, and is suitable for temperature and pressure;
(2) according to the parachute wearing method, the device is worn and started;
(3) the speed sensor and the laser ranging sensor provide measurement data, and the safety device control circuit controls the automatic parachute opening (if the auxiliary parachute cannot be automatically opened, the parachute opening can be manually controlled) of the low-altitude parachute. The auxiliary parachute is opened, and the flying posture of personnel is adjusted;
(4) the laser ranging sensor collects descending data, the sensor feeds back signals at a position 1 m close to the ground, the sensor signal processing module communicates with the heating control module, and the heating control module sends an ignition instruction to instruct the heating agent to be ignited;
(5) starting the heating agent, expanding the gas to break through the diaphragm, and quickly completing the back spraying within 2-3 seconds; (if the back jet does not work automatically, the jet button can be pressed manually, and the jet membrane is opened immediately to start the back jet). The speed is reduced again before landing, and the landing is slow and safe. The air rapidly passes through the air inlet channel and is filled into the inflatable vest to protect the safety of the landers (the vest can be separated according to the actual situation).
Aiming at the public safety problem, the invention designs and develops a portable, easy-to-operate and multipurpose soft landing device; the invention has the beneficial effects that:
(1) compared with a common parachute, the parachute has the advantages of higher reliability, lower operation difficulty, no need of professional training, and strong popularization and realizability;
(2) the landing speed and the controllable flight attitude can be obviously reduced, the operation difficulty of parachuting personnel is reduced, and the parachuting risk is reduced;
(3) the use of the inflatable vest can greatly weaken the impact force during landing and ensure the safety of personnel to the maximum extent;
(4) the popularization and the application of the invention avoid casualties caused by the defects of the parachute landing system, and improve the parachute landing efficiency and the fighting capacity of personnel; the novel high-rise rescue device has wide future application prospect, can be popularized in a large range, is safe and environment-friendly, and can be used for general aviation equipment, high-rise rescue equipment, safety protection devices and the like.
(5) The parachute of the invention is miniaturized, portable, easy to wear, easy to operate; the state of the flight personnel can be intelligently identified, and the flight personnel can quickly respond; the safety of personnel is protected by the quick inflation coat; the reaction force ensures low speed landing.
Drawings
FIG. 1 is a three-dimensional perspective view (back side) of the portable single reverse-jet soft landing safety device;
FIG. 2 is a three-dimensional perspective view (front side) of the portable single reverse-jet soft landing safety device;
FIG. 3 is a two-dimensional cross-sectional view of the interior of the containment device;
FIG. 4 is a rear perspective view of the wearable system;
FIG. 5 is a two-dimensional side view of a portable single reverse-spraying soft landing safety device.
In the figure: 1-manual parachute opening button, 2-fixing nut, 3-fixing bolt, 4-first nozzle, 5-second nozzle, 6-high-pressure gas cylinder, 7-laser distance measuring sensor, 8-heating control module, 9-manual air injection button, 10-isolation plate, 11-parachute bag, 12-backpack, 13-parachute opening, 14-sensor signal processing module, 15-speed sensor, 16-heating agent, 17-inflatable vest, 18-starting button, 19-air inlet channel, 20-connecting lock catch and 21-separating button.
Detailed Description
The present invention is further illustrated by, but is not limited to, the following examples.
Example 1:
as shown in fig. 1 to 5, a portable single person reverse-spraying soft landing safety protection device comprises a wearing system, a receiving system, an parachute landing system, an air-jet reverse-pushing system and a control system.
The wearing system comprises an inflatable vest 17, a starting button 18, an air inlet channel 19, a connecting lock 20 and a separating button 21; the start button 18 is located on the right shoulder strap of the inflatable vest 17, the release button 21 is located on the left shoulder strap of the inflatable vest 17 and is connected to the control system by wires, and the air inlet channel is located at the lower back side of the inflatable vest 17 and is connected to the high pressure air bottle 6. The connecting lock 20 is located between the inflatable vest 17 and the backpack 12, and the two locks are arranged in parallel and are connected with the inflatable vest 17 and the backpack 12 by high-density knitted composite material and rivets (taking fig. 5 as a reference).
The containing system comprises a backpack 12 and an isolation plate 10; the backpack 12 is used as a storage body of the device, is a portable outer layer storage device of a single reverse jet type soft landing device, and is an integrated carrier of an parachute landing system, an air jet reverse thrust system and a control system; the isolation board 10 is installed inside the backpack 12, and is located between the parachute landing system and the air injection thrust reverser system, and wraps the control system.
The parachute system comprises a parachute bag 11 and a manual parachute opening button 1, wherein the parachute bag 11 is fixed on the upper layer of a backpack 12, can be connected by high-density knitted composite materials and rivets, and is stably supported by an isolation plate 10; parachute opening 13 is vertically upward, at the top of backpack 12. The manual umbrella opening button 1 is mounted on the left center of the outer surface of the backpack 12 by a fixing bolt 3 (with reference to fig. 3).
The control system is arranged in the isolation plate 10, is positioned between the parachute landing system and the air jet thrust reverser, and consists of a sensor signal processing module 14, a speed sensor 15, a laser ranging sensor 7 and a heating control module 8, and the control system is connected with the parachute landing system and the air jet thrust reverser by using electric wires. The sensor signal processing module 14, the speed sensor 15 and the heating control module 8 are fixed by screws inside the isolation plate 10. The right side of the outer part of the backpack 12 is provided with a manual air injection button 9, and the manual air injection button 9 is arranged on the right side of the outer surface of the backpack 12 by a fixing bolt 3. The laser distance measuring sensor 7 is mounted on the right side of the outer surface of the backpack 12 (with reference to fig. 3) using a ball-shaped cover, and is located below the manual air injection button 9.
The jet-propelled thrust reverser is positioned at the bottom layer in the backpack 12 (taking figure 3 as a reference), a separation plate 10 is arranged above the backpack and used for separating the parachute pack 11 from the control system, the inside of the backpack comprises a high-pressure gas cylinder 6, a first nozzle 4 and a second nozzle 5, a diaphragm is arranged in the nozzle, and the jet-propelled thrust reverser is connected to the control system through a wire. The high-pressure gas cylinder 6 is transversely arranged and filled with supercritical CO2As the jet gas, the two ends of the high-pressure gas cylinder 6 are provided with fixing bolts 3 which are connected with the side wall fixing nuts 2 to play a role in fixing, the lower side of the high-pressure gas cylinder 6 is provided with double nozzles which are vertically downward, a diaphragm is stuck inside the nozzle, and the nozzle is connected with the inflatable vest 17 through an air inlet channel 19.
The high-pressure gas cylinder 6 is provided with a heating agent 16, the components of the heating agent include potassium perchlorate, ammonium oxalate and salicylic acid, wherein the potassium perchlorate is an oxidant, the ammonium oxalate and the salicylic acid are reducing agents, and the chemical reaction based on oxygen balance can refer to:
9KCLO4+2C2H8N2O4+2C7H6O3→9KCL+2N2+14H2O+18CO2
the heating agent comprises the following components in percentage by weight: and (3) potassium perchlorate: 70%, ammonium oxalate: 20%, salicylic acid: 10 percent, the heating agent is filled in the high-pressure gas cylinder 6, and has good moisture-proof and antistatic effects.
The inflatable vest 17 and the parachute bag 11 of the present invention are made of textile materials, and parts of metal pieces and rubber plastic pieces. Compact structure, high strength, softness, good elasticity and small non-uniform elongation. Has the properties of lightness, thinness, softness, higher elastic modulus, elongation at break less than that of the umbrella coat fabric and the like. The connecting material of each part of the backpack 12 is high-density knitted composite material, has the characteristics of high required strength, good lubrication, uniform and stable twist, fire resistance, water resistance, wear resistance, ventilation and the like, accords with human engineering, is tightly attached to the body of a user, is easy to operate and is convenient to put on and take off.
The pressure-bearing supercritical CO of the high-pressure gas cylinder can reach 70MPa at present2The critical pressure is 7MPa, the bearing pressure can be completely met, the carried high-pressure gas cylinder can be small in size and large in gas storage capacity, the device can be miniaturized and portable, and CO can be used for storing gas2The safety and no pollution are realized; to prevent CO2Spraying heat absorbing agent to freeze the seal, and heating agent is arranged in the gas storage cylinder to heat CO2Heating to form supercritical fluid. The existence of the diaphragm at the nozzle can ensure that the nozzle is kept in a closed state before high-pressure gas is not generated in the tank body.
The device control system comprises speed sensor 15, laser rangefinder sensor 7 and sensor signal processing module 14 and heating control module 8, constantly gathers flight data at descending process speed sensor 15, laser rangefinder sensor 7, reaches the high back of opening the parachute, and sensor signal processing module 14 opens the parachute system, carries out the one-level speed reduction and adjusts the descending gesture. When the supercritical fluid enters the ground, the heating control module 8 starts the heating device, the supercritical fluid is vertically downwards sprayed by the double nozzles before falling to the ground, and the purpose of stable falling to the ground is achieved by secondary speed reduction.
The speed sensor 15 used by the invention is a ZLS-Px speed sensor, and has 2 orthogonal measuring signals which can output and measure the speed in the horizontal direction and the vertical direction, so that the speed sensor can sense whether a measured body stops or not and can sense the movement direction of the measured body. The sensor is fixed in the stable backpack, is a non-contact sensor, and can identify the movement direction besides measuring the speed. Certain position spaces are left above, below, on the left and right of the sensor, so that the sensor is prevented from colliding with surrounding parts in the moving process to cause damage.
The laser ranging sensor 7 used in the invention is a DIMETIX FLS-CH30 laser ranging sensor, the measuring distance can reach 500 meters, and the typical precision can reach 1.5 millimeters. The internal heater can make the sensor work normally in the extreme low temperature environment within-40 ℃. The firm aluminum alloy shell ensures that the protection grade reaches IP65, and can be used in various complex fields and outdoors. The working principle is as follows: the measurement is performed using the principle of phase comparison. The laser sensor emits visible laser beams with different frequencies, receives scattered laser returned from a measured object, compares the received laser signals with reference signals, and calculates the distance between objects corresponding to corresponding phase offsets by using the microprocessor, so that the millimeter-scale measurement precision can be achieved.
The invention provides a use method of the portable single reverse-spraying soft landing safety protection device, which comprises the following steps:
(1) confirming that each module is normal before use; the high-pressure gas cylinder is sealed, and is suitable for temperature and pressure;
(2) according to the parachute wearing method, the device is worn and started;
(3) the speed sensor and the laser ranging sensor provide measurement data, and the low-altitude parachute automatically opens (if the auxiliary parachute cannot be automatically opened, the parachute can be manually opened). The auxiliary parachute is opened, and the flying posture of personnel is adjusted;
(4) the laser ranging sensor collects descending data, the sensor feeds back signals at a position 1 m close to the ground, the sensor signal processing module communicates with the heater control module, and the heater control module sends an ignition instruction to order to ignite a heating agent;
(5) starting the heating agent, expanding the gas to break through the diaphragm, and quickly completing the back spraying within 2-3 seconds; (if the back jet does not work automatically, the jet button can be pressed manually, and the jet membrane is opened immediately to start the back jet). The speed is reduced again before landing, and the landing is slow and safe. The air rapidly passes through the air inlet channel and is filled into the inflatable vest to protect the safety of the landers (the vest can be separated according to the actual situation).
Claims (10)
1. The utility model provides a portable single anti-formula soft landing safety arrangement that spouts which characterized in that: the parachute landing system comprises a wearing system, a storage system, a parachute landing system, an air injection thrust reverser system and a control system;
the wearing system comprises an inflatable vest, a starting button, an air inlet channel, a connecting lock catch and a separating button; the starting button is positioned on the right shoulder strap of the inflatable vest, the separating button is positioned on the left shoulder strap of the inflatable vest and is connected to the control system by a wire, and the air inlet channel is positioned at the lower part of the back side of the inflatable vest and is connected with the high-pressure air bottle; the connecting lock catch is positioned between the inflatable vest and the backpack and is used for connecting the inflatable vest and the backpack;
the containing system comprises a backpack and an isolation plate; the backpack is used as a storage body of the device, is a portable outer layer storage device of the single reverse jet soft landing device, and is an integrated carrier of an parachute landing system, an air jet reverse thrust system and a control system; the isolation plate is arranged in the backpack, is positioned between the parachute landing system and the air injection thrust reverser, and wraps the control system;
the parachute system comprises a parachute bag and a manual parachute opening button, the parachute bag is fixed on the upper layer of the backpack and is stably supported by the isolation plate; the parachute opening is vertically upward and positioned at the top of the backpack; the manual umbrella opening button is arranged in the center of the left side of the outer surface of the backpack through a fixing bolt;
the control system is arranged in the isolation board, is positioned between the parachute landing system and the air jet thrust reverser, and consists of a sensor signal processing module, a speed sensor, a laser ranging sensor and a heating control module, and the control system is connected with the parachute landing system and the air jet thrust reverser by using electric wires; the right side of the outer part of the backpack is provided with a manual air injection key, and the laser ranging sensor is arranged on the right side of the outer surface of the backpack by using a spherical cover and is positioned at the lower part of the manual air injection key;
the air injection reverse thrust system is positioned at the bottom layer in the backpack, a separation plate is arranged above the air injection reverse thrust system and used for separating the parachute bag from the control system, the interior of the air injection reverse thrust system comprises a high-pressure air bottle, a first nozzle and a second nozzle, and a diaphragm is arranged in the nozzle; the jet thrust reverser is connected to the control system by an electric wire; the high-pressure gas cylinder is transversely arranged and filled with supercritical CO2As the jet gas, the two ends of the high-pressure gas cylinder are provided with fixing bolts to be connected with side wall fixing nuts for fixing, and the lower side of the high-pressure gas cylinder is provided with a double-nozzle vertical shaftThe inner part of the nozzle is stuck with a diaphragm and is connected with the inflatable vest through an air inlet channel.
2. The portable single reverse-jet soft landing safety protection device of claim 1, wherein: the connecting lock catches are positioned between the inflatable vest and the backpack, the two lock catches are arranged in parallel, and the high-density knitted composite material and the rivets are used for connecting the inflatable vest and the backpack; the parachute bag and the backpack are connected through the high-density knitted composite material and the rivets.
3. The portable single reverse-jet soft landing safety protection device of claim 1, wherein: the sensor signal processing module, the speed sensor and the heating control module are fixed by screws in the isolation plate; the manual air injection key is arranged on the right side of the outer surface of the backpack through a fixing bolt.
4. The portable single reverse-jet soft landing safety protection device of claim 1, wherein: a potassium perchlorate heating agent is arranged in the high-pressure gas cylinder, and comprises potassium perchlorate, ammonium oxalate and salicylic acid, wherein the potassium perchlorate is an oxidant, and the ammonium oxalate and the salicylic acid are reducing agents;
the heating agent comprises the following components in percentage by weight: and (3) potassium perchlorate: 70%, ammonium oxalate: 20%, salicylic acid: 10 percent, and the heating agent is filled in the high-pressure gas cylinder.
5. The portable single reverse-jet soft landing safety protection device of claim 1, wherein:
the inflatable vest and the parachute bag are made of textile materials, partial metal pieces and rubber plastic pieces;
the connecting material of each part of the backpack is a composite knitted material.
6. The portable single reverse-jet soft landing safety protection device of claim 1, wherein:
the high-pressure gas cylinder can reach 70MBearing pressure of Pa; to prevent CO2Spraying heat absorbing agent to freeze the seal, and heating agent is arranged in the high-pressure gas cylinder to heat CO2Heating to form a supercritical fluid; the diaphragm is arranged at the nozzle, so that the nozzle can be kept in a closed state before high-pressure gas is not generated.
7. The portable single reverse-jet soft landing safety protection device of claim 1, wherein: in the descending process, a speed sensor and a laser ranging sensor of the control system continuously acquire flight data, and after the parachute opening height is reached, a sensor signal processing module starts the parachute descending system to perform primary speed reduction and adjust the descending posture; when the supercritical fluid enters the ground, the heating control module starts the heating device, the supercritical fluid is vertically downwards sprayed by the double nozzles before falling to the ground, and the purpose of stable falling to the ground is achieved by secondary speed reduction.
8. The portable single reverse-jet soft landing safety protection device of claim 1, wherein: the speed sensor is a ZLS-Px speed sensor in the model, 2 orthogonal measurement signals are output by the speed sensor, the speed in the horizontal direction and the vertical direction can be measured, and the speed sensor can not only detect whether a measured body stops, but also detect the movement direction of the measured body;
the laser ranging sensor is of a DIMETIX FLS-CH30 type, the measuring distance can reach 500 meters, and the typical precision is as high as 1.5 millimeters.
9. A use method of the portable single person reverse-spraying soft landing safety protection device as claimed in any one of claims 1 to 8, characterized by comprising the following steps:
(1) confirming that each module is normal before use; the high-pressure gas cylinder is sealed, and is suitable for temperature and pressure;
(2) according to the parachute wearing method, the device is worn and started;
(3) the speed sensor and the laser ranging sensor provide measurement data, and the low-altitude parachute falling automatic parachute opening is realized; the auxiliary parachute is opened, and the flying posture of personnel is adjusted;
(4) the laser ranging sensor collects descending data, the laser ranging sensor feeds back signals at a position 1 m close to the ground, the sensor signal processing module communicates with the heater control module, and the heater control circuit sends an ignition instruction to order to ignite the heating agent;
(5) starting the heating agent, expanding the gas to break through the diaphragm, and quickly completing the back spraying within 2-3 seconds; the speed is reduced again before landing, and the landing is slow and safe; the air rapidly passes through the air inlet channel and is filled into the inflatable vest to protect the safety of the landers; and selecting the separating vest according to actual conditions.
10. The use method of the portable single reverse-jet soft landing safety protection device as claimed in claim 9, wherein: in the step (3), if the auxiliary umbrella cannot be automatically opened, manually controlling the umbrella to be opened;
and (5) if the back jet does not automatically work, pressing a manual jet button, and immediately opening the diaphragm to start the back jet.
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