CN202429354U - Small unmanned aerial vehicle (UAV) automatic protective airbag launching device - Google Patents

Abstract

The utility model discloses a small unmanned aerial vehicle (UAV) automatic protective airbag launching device which comprises an ultrasonic generating circuit which continuously launches ultrasonic waves to the outside at low energy consumption, an ultrasonic receiving and amplifying circuit which receives the reflected ultrasonic waves, a heating load and a power closing system, wherein the power closing system is connected with the ultrasonic receiving and amplifying circuit; and the switch of the heating load is controlled by the power closing system. The device has the traditional radio control airbag protection function, a protective airbag can be automatically opened under the out-of-control condition, and the airbag can be automatically launched and opened when a certain distance from the airbag to the ground is set, i.e., before the unmanned aerial vehicle lands on the ground. In addition, the researched and developed protection equipment can be positioned in a floating state when the unmanned aerial vehicle drops in deep water, so that the aim of protecting the unmanned aerial vehicle is fulfilled.

Description

SUAV is protected the air bag percussion lock automatically

Technical field

The utility model relates to SUAV and protects the air bag percussion lock automatically.

Background technology

Unmanned plane is in military affairs, agricultural, and geology, scientific research, the major disasters exploration, program is taken, and goods and materials transportations etc. are all being played the part of important role in a lot of fields.Along with the function of unmanned plane is perfect gradually, except itself expending greatly, entrained electronic machine is also more and more most advanced and sophisticated, accurate and expensive.Therefore, the safety problem of unmanned plane seems particularly important.It is parachute-type and secondary air bag that the more unmanned plane of present international and domestic use reclaims protection system, and the two is used in the removal process of unmanned plane or aircraft equipment has been played protective effect.Parachute mainly is to lean on velocity response or manual long haul radio mode to open, and secondary air bag is that born moment of unmanned plane and ground have taken place to clash, and opens air bag (similar with automotive airbag) by shock sensor as percussion lock.

The utility model content

The utility model technical matters to be solved is that the deficiency that is directed against prior art provides a kind of SUAV to protect the air bag percussion lock automatically.

SUAV is protected the air bag percussion lock automatically; Comprise that the hypracoustic super sonic that constantly reflects to the ultrasonic wave generation circuit of external emission hypracoustic, reception with low energy consumption receives amplifying circuit, heating load and closes power system; Close power system and be connected with super sonic reception amplifying circuit, heating load is by closing the power system master cock.

It had both had traditional radio-guided air bag protective effect, can also under its out-of-control condition, protect air bag by self-opening, and (before unmanned plane is born) pulls the trigger automatically and open air bag in the time of can being provided with apart from the ground certain distance.Preventive device with research and development can also make it be in floating condition when unmanned plane is fallen into deep water in addition, reaches the purpose of protection.

Description of drawings

Fig. 1 protects the airbag design principle automatically for unmanned plane

Fig. 2 is a ultrasonic output circuit;

Fig. 3 receives amplification driving circuit for super sonic.

The specific embodiment

Below in conjunction with specific embodiment, the utility model is elaborated.

As shown in Figure 1, SUAV protects the air bag percussion lock to comprise that ultrasonic wave generation circuit, super sonic receive amplifying circuit, heating load (heating resistor), close power system automatically.Ultrasonic generator with low energy consumption constantly to the external emission super sonic; Super sonic receives amplifying circuit and receives the super sonic that reflects; Judge the distance between aircraft and the large-scale obstacle; When near the boundary value that is provided with, will trigger and close power system, close power switch and closed heater switch, make heating load NaN by closing power system ₃Heat, moment is emitted a large amount of N ₂, be full of air bag, reach the purpose of protection unmanned plane.

Ultrasonic output circuit is as shown in Figure 2, and C3 left-hand component is square wave generation circuit, and it passes through R1; C1 produces the RC oscillating circuit, as comparator, just can produce square-wave signal by U1A; C2 improves current potential and uses, can be through regulating R1, and R2X just can regulate this square wave output frequency; Get the square-wave signal that suitable value just can obtain 40KHz: wherein, square-wave cycle is (R _2X1With R _2X2Be the value of portions of resistance up and down that RX2 is divided into):

$T={2R}_1{C}_1\ln (1+\frac{{2R}_{2X1}}{R_{2X2}})---\left(1\right)$

Its frequency can be expressed as:

f＝1/T (2)

Modulating the square wave of 40KHz, is β through magnification factor among Fig. 2 _Q1Aerotron (Q1) amplifies back acquisition width of cloth amplitude:

U _0Q1＝2β _Q1A (3)

A is the amplitude of square wave in the formula.Can modulate the square wave of the 40KHz about width of cloth width of cloth 10V by (1), (2) and (3) formula, drive the super sonic generating device (RL1) among Fig. 2 thus, constantly produce and outwards send super sonic.Rheostat R in the circuit diagram 2 ₃Can fetch the adjusting ultrasonic frequency outward.

It is as shown in Figure 3 that super sonic receives amplifying circuit, through with the aerotron being 3 grades of amplifying circuits of element, after the ultrasonic signal that super sonic receiving element (RL2) is received carries out voltage gain.Drive the two stage relay of back, and then realize circuit control at first being respectively β through magnification factor ₂, β ₃, β ₄Aerotron Q2, Q3, Q4 amplify, output voltage is:

U _OQ4＝β ₂β ₃β ₄U _i (4)

Aerotron Q5 is an on-off action, U _OQ4As its ground level cut-in voltage, get into and U as signal _OQ4＞U _OnQ5The time, Q5 is in conducting state, Q5 emitter serial connection relay X1 (excitation current is little, and rated current is also little).Because firing current is less, and ignition device electric current very big (can reach more than 10 ampere), relay adopts two adapting devices that drive; (rated current is big as second relay for the closing current of first relay; But drive current is also big) excitation current, second relay X2 also triggered when first relay X1 triggers, and realized with the big electric current of very little current control; The 5-2 road is a normally closed switch among the element X2, and 5-3 is a normal open switch.5,3 ports can be connected in series with high hot water radiation wire, realize control action.5,2 ports and motor joining, disable motor function in the time of just can realizing load driving.The sensitive performance of the rheostat R11X adjustable circuit in the circuit (distance is provided with).DS1 among Fig. 3, DS2 are indicator lamp, and DS1 is the power connection indicator lamp, and DS2 is device indicator lamp when exciting.

Should be understood that, concerning those of ordinary skills, can improve or conversion, and all these improvement and conversion all should belong to the protection domain of the utility model accompanying claims according to above-mentioned explanation.

Claims (1)

1. a SUAV is protected the air bag percussion lock automatically; It is characterized in that; Comprise that the hypracoustic super sonic that constantly reflects to the ultrasonic wave generation circuit of external emission hypracoustic, reception with low energy consumption receives amplifying circuit, heating load and closes power system; Close power system and be connected with super sonic reception amplifying circuit, heating load is by closing the power system master cock.

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