CN203799213U - Power switching device for electric multi-rotor unmanned aerial vehicle - Google Patents
Power switching device for electric multi-rotor unmanned aerial vehicle Download PDFInfo
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- CN203799213U CN203799213U CN201420173667.7U CN201420173667U CN203799213U CN 203799213 U CN203799213 U CN 203799213U CN 201420173667 U CN201420173667 U CN 201420173667U CN 203799213 U CN203799213 U CN 203799213U
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Abstract
The utility model relates to a power switching device for an electric multi-rotor unmanned aerial vehicle. The power switching device is mainly used to solve the problem that a flight control computer needs to be rely on or a wireless link needs to be added when the switch device cuts off the power source in a remote control manner. The power switching device comprises a power conversion circuit, a PPM signal comparison circuit and a MOS transistor switching circuit. The power input end of the power conversion circuit is connected with the output end of a multi-rotor unmanned aerial vehicle lithium polymer battery pack. The power output end of the power conversion circuit is connected with the power input end of a RC receiver and the power input end of the PPM signal comparison circuit separately. The signal input end of the PPM signal comparison circuit is connected with the PPM output channel of the RC receiver. According to the utility model, the RC remote control device and RC receiver wireless remote control link existing on a multi-rotor unmanned aerial vehicle universally is shared, no additional wireless communication link needs to be added, the switching-on and switching-off of the power switch can be realized, the cost can be effectively reduced, and additional wireless radio-frequency interference can be avoided.
Description
Technical field
The utility model relates to a kind of power switch device, particularly a kind of power switch device for electronic many rotor unmanned aircrafts.
Background technology
In recent years, by battery, provide many rotor unmanned aircrafts of power to be widely used in the fields such as aeroplane photography, traffic monitoring, geographical mapping, electric power line walking.In the application in these fields, many rotor unmanned aircrafts often need to be in the flight of overhead, densely populated region, and now safety problem seems particularly important.Once aircraft is because machinery or electronics reason are out of control, the rotor of its High Rotation Speed over the ground dough figurine group causes huge injury, the power switch device that therefore, can cut off reliably aircraft power for reduce aircraft out of control over the ground dough figurine group's injury play very important effect.
The scheme that existing electronic many rotor unmanned aircrafts cut off electrical source of power when out of control mainly contains two kinds.A kind of scheme is that aircraft sends order by RC telepilot or land station to flight control computer after out of control and cuts off electrical source of power; This scheme being realized by software extremely depends on the reliability of flight control computer, once flight control computer because of hardware or software is former thereby lost efficacy, the electrical source of power of aircraft cannot be cut off.Another kind of scheme is to set up a set of independently wireless switchgear, and aircraft rear ground staff out of control is by this switchgear remote-control cut-off electrical source of power; This scheme has guaranteed the reliability of switchgear, but need to increase an independently radio communication chain circuit, has also brought extra less radio-frequency to disturb when increasing system cost.Therefore need a kind ofly not rely on flight control computer and without the power switch scheme that increases wireless link, to reach the good compromise of reliability and cost.
Utility model content
The deficiency that need to rely on flight control computer or need to increase wireless link in order to overcome switchgear remote-control cut-off electrical source of power, the utility model provides a kind of power switch device for electronic many rotor unmanned aircrafts.
The technical scheme that the utility model adopts is: a kind of power switch device for electronic many rotor unmanned aircrafts, it comprises power-switching circuit, PPM signal comparator circuit and metal-oxide-semiconductor on-off circuit, the power input of described power-switching circuit is connected with the output terminal of many rotor unmanned aircrafts lithium polymer battery group, the power output end of power-switching circuit is connected with the power input of PPM signal comparator circuit with the power input of RC receiver respectively, the signal input part of described PPM signal comparator circuit is connected with the PPM output channel of RC receiver, the signal output part of PPM signal comparator circuit is connected with the control input end of metal-oxide-semiconductor on-off circuit, the power input of described metal-oxide-semiconductor on-off circuit is connected with the output terminal of many rotor unmanned aircrafts lithium polymer battery group, power output end is connected with the power-equipment of many rotor unmanned aircrafts, described RC receiver and RC telepilot are by wireless connections.
Described power-switching circuit comprises stabilized voltage supply chip U1 and capacitor C1, C2, C3, C4, described capacitor C 1 is connected with the pin one of stabilized voltage supply chip U1 with one end after C2 parallel connection, other end ground connection, described capacitor C 3 is connected with the pin 3 of stabilized voltage supply chip U1 with one end after C4 parallel connection, other end ground connection.
Described PPM signal comparator circuit comprises PPM signal input interface JP1, two-way D class rising edge trigger U2, variohm R1, resistor R2, R3, capacitor C5, light emitting diode D1, wherein the pin one of PPM signal input interface JP1 is PPM signal input part, be connected with pin one 2 with the pin 3 of two-way D class rising edge trigger U2 respectively, the pin two of PPM signal input interface JP1 is connected with the pin 3 of stabilized voltage supply chip U1, pin 3 ground connection of PPM signal input interface JP1, the pin 5 of described two-way D class rising edge trigger U2 is by variohm R1 and capacitor C5 ground connection, node between pin 4 access variohm R1 and capacitor C5, pin one 1 is connected with pin 5, pin one, pin one 0, pin one 3 is connected with the pin 3 of stabilized voltage supply chip U1, pin 8 is connected with the pin 3 of stabilized voltage supply chip U1 with light emitting diode D1 by resistor R3, pin two ground connection, pin 9 is connected with the base stage of NPN triode T1 by resistor R2.
Described metal-oxide-semiconductor on-off circuit comprises input interface JP2, P channel MOS tube Q1, Q2, Q3, Q4, NPN triode T1, resistor R4, R5, output interface JP3, the collector of described NPN triode T1 is connected with the pin two of input interface JP2 by R4, R5, emitting stage ground connection, after the drain electrode parallel connection of described P channel MOS tube Q1, Q2, Q3, Q4, be connected with the pin two of input interface JP2, after source class parallel connection, be connected with the pin two of output interface JP3, grid parallel connection accesses the node between resistor R4, R5 afterwards.
The beneficial effects of the utility model are: this has shared the wireless remote control link of ubiquitous RC telepilot and RC receiver on many rotor unmanned aircrafts for power switch devices of electronic many rotor unmanned aircrafts, without increasing extra radio communication chain circuit, realize the break-make of power switch, effectively reduce cost and avoided extra less radio-frequency to disturb; Based on two-way D class rising edge trigger, realize, compare and adopt the scheme of single-chip microcomputer to there is the advantage that cost is low, reliability is high; Adopt conducting that the metal-oxide-semiconductor of low on-resistance realizes power supply and close, have that reliability is high, On current is large, volume is little, an advantage such as low of generating heat.
Accompanying drawing explanation
Fig. 1 is system principle structural drawing of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is described further:
As shown in Figure 1, a kind of power switch device for electronic many rotor unmanned aircrafts, it comprises power-switching circuit 101, PPM signal comparator circuit 102 and metal-oxide-semiconductor on-off circuit 103, the power input of described power-switching circuit 101 is connected with the output terminal of many rotor unmanned aircrafts lithium polymer battery group 401, by the burning voltage of convert to+5V of the input voltage of 8.4V-25.2V, for PPM signal comparator circuit 102 and 201 power supplies of many rotor unmanned aircrafts RC receiver, the power output end of power-switching circuit 101 is connected with the power input of PPM signal comparator circuit 102 with the power input of RC receiver 201 respectively, the signal input part of described PPM signal comparator circuit 102 is connected with the PPM output channel of RC receiver 201, the signal output part of PPM signal comparator circuit is connected with the control input end of metal-oxide-semiconductor on-off circuit 103, according to PPM signal, input produces the level signal of controlling metal-oxide-semiconductor on-off circuit, the power input of described metal-oxide-semiconductor on-off circuit 103 is connected with the output terminal of many rotor unmanned aircrafts lithium polymer battery group 401, power output end is connected with the power-equipment 501 of many rotor unmanned aircrafts, described RC receiver 201 and RC receiver 301 are by wireless connections, realizing the teleswitch of electrical source of power controls.
As shown in Figure 2, described power-switching circuit 101 comprises stabilized voltage supply chip U1 and capacitor C1, C2, C3, C4, described stabilized voltage supply chip U1 adopts the LM340A voltage regulator chip of Texas Instruments, it comprises the pin one as power input, as the pin 3 of power output end and the pin two of ground connection, described capacitor C 1 is connected with the pin one of stabilized voltage supply chip U1 with one end after C2 parallel connection, other end ground connection, described capacitor C 3 is connected with the pin 3 of stabilized voltage supply chip U1 with one end after C4 parallel connection, other end ground connection, described capacitor C1, C2, C3 and C4 play burning voltage effect.
As shown in Figure 2, described PPM signal comparator circuit 102 comprises PPM signal input interface JP1, two-way D class rising edge trigger U2, variohm R1, resistor R2, R3, capacitor C5, light emitting diode D1, PPM signal input interface JP1 is 2.54mm spacing tripod row pin, wherein the pin one of PPM signal input interface JP1 is PPM signal input part, be connected with pin one 2 with the pin 3 of two-way D class rising edge trigger U2 respectively, the pin two of PPM signal input interface JP1 is connected with the pin 3 of stabilized voltage supply chip U1, described two-way D class rising edge trigger U2 adopts the SN74HC74 chip of Texas Instruments, its pin 5 is by variohm R1 and capacitor C5 ground connection, variohm R1 and capacitor C5 form the setting time that RC discharge circuit is controlled D class rising edge trigger U2A, variohm R1 plays the effect of restriction discharge current, capacitor C5 plays accumulation of energy effect, the pin 4 access variohm R1 of two-way D class rising edge trigger U2 and the node between capacitor C5, the pin one 1 of two-way D class rising edge trigger U2 is connected with pin 5, the pin one of two-way D class rising edge trigger U2, pin one 0, pin one 3 is connected with the pin 3 of stabilized voltage supply chip, the pin 8 of two-way D class rising edge trigger U2 is connected with the pin 3 of stabilized voltage supply chip U1 with light emitting diode D1 by resistor R3, light emitting diode D1 is used to indicate switching-on and switching-off state, R3 plays restriction light emitting diode D1 electric current, the pin two ground connection of two-way D class rising edge trigger U2, the pin 9 of two-way D class rising edge trigger U2 is connected with the base stage of NPN9013 triode T1 by resistor R2, resistor R2 plays the effect of restriction NPN triode T1 base stage input current.
As shown in Figure 2, described metal-oxide-semiconductor on-off circuit 103 comprises T-shaped plug male JP2, P channel MOS tube Q1, Q2, Q3, Q4, NPN9013 triode T1, resistor R4, R5, T-shaped plug female JP3, T-shaped plug male JP2 is connected with the power output end of many rotor unmanned aircrafts lithium polymer battery group 401, realize power supply input, T-shaped plug female JP3 is connected with many rotor unmanned aircrafts power-equipment 501, realize power supply output, described NPN9013 triode T1 plays on-off action, and its collector passes through R4, R5 is connected with the pin two of T-shaped plug male JP2, emitting stage ground connection, described P channel MOS tube Q1, Q2, Q3, Q4 adopts the FDMS6681Z chip of Fairchild Semiconductor, for the conducting of power supply with close, after its drain electrode parallel connection, be connected with the pin two of T-shaped plug male JP2, after source class parallel connection, be connected with the pin two of T-shaped plug female JP3, after grid parallel connection, access resistor R4, node between R5, resistor R4 plays restriction P channel MOS tube Q1, Q2, Q3, the effect of Q4 grid input current, resistor R5 plays restriction P channel MOS tube Q1, Q2, Q3, the effect of Q4 gate source voltage.
The course of work of the present utility model: while normally working, switch corresponding with the PPM output channel of RC receiver 201 on RC telepilot 301 is in opening, make the PPM output signal high level pulsewidth on RC telepilot 301 be greater than 1.5 milliseconds (being generally 2 milliseconds), the power switch device conducting that the utility model relates to, many rotor unmanned aircrafts obtain power supply supply, while needing powered-down, corresponding switch on telepilot 301 cuts out and makes PPM signal high level pulsewidth be less than 1.5 milliseconds (being generally 1 millisecond), power switch device is closed, the power supply of many rotor unmanned aircrafts is cut off.
Principle of work of the present utility model is: after powering on, the pin 4 of two-way D class rising edge trigger U2 is high level with pin 5, the PPM signal of coming from RC receiver is that high level pulsewidth is the periodic signal of 1-2 millisecond, when PPM signal is changed to high level by low level, the low level signal of two-way D class rising edge trigger U2 pin two is latched and makes pin 5 output low levels, the discharge circuit that now variohm R1 and capacitor C5 form starts electric discharge, when electric discharge T after the time two-way D class rising edge trigger U2 pin 4 level signal step-downs make D class rising edge trigger U2A force set, pin 5 output high level, this high level signal charges to capacitor C5 by variohm R1 on the one hand, pin one 1 at two-way D class rising edge trigger U2 produces rising edge signal from low to high on the other hand, this rising edge signal is latched into the level signal of two-way D class rising edge trigger U2 pin one 2 pin 9 of two-way D class rising edge trigger U2, if the high level pulsewidth of the PPM signal of coming from RC receiver is greater than T discharge time, the high level signal of pin one 2 will be latched to pin 9, correspondingly, NPN9013 triode T1 opens and then makes P channel MOS tube Q1, Q2, Q3, Q4 conducting, the power-equipment 501 of many rotor unmanned aircrafts obtains power supply supply, otherwise, if the high level pulsewidth of the PPM signal of coming from RC receiver is less than T discharge time, the low level signal of pin one 2 will be latched to pin 9, correspondingly, NPN 9013 triode T1 and P channel MOS tube Q1, Q2, Q3, Q4 closes, the power supply supply of the power-equipment 501 of many rotor unmanned aircrafts is cut off, adjust the resistance of variohm R1 and T discharge time of the RC discharge circuit of variohm R1 and capacitor C5 composition can be adjusted to 1.5 milliseconds, when the PPM signal high level pulsewidth that makes to come when RC receiver is greater than 1.5 milliseconds, the power-equipment 501 of many rotor unmanned aircrafts obtains power supply supply, when the PPM signal high level pulsewidth of coming when RC receiver is less than 1.5 milliseconds, the power supply supply of many rotor unmanned aircrafts power-equipment 501 is cut off.
Below described embodiment is only preferred implementation of the present utility model by reference to the accompanying drawings, and the not restriction to protection domain of the present utility model, any improvement of doing based on the utility model spirit all ought to be within the utility model protection domain.
Claims (4)
1. the power switch device for electronic many rotor unmanned aircrafts, it is characterized in that: it comprises power-switching circuit (101), PPM signal comparator circuit (102) and metal-oxide-semiconductor on-off circuit (103), the power input of described power-switching circuit (101) is connected with the output terminal of many rotor unmanned aircrafts lithium polymer battery group (401), the power output end of power-switching circuit (101) is connected with the power input of PPM signal comparator circuit (102) with the power input of RC receiver (201) respectively, the signal input part of described PPM signal comparator circuit (102) is connected with the PPM output channel of RC receiver (201), the signal output part of PPM signal comparator circuit (102) is connected with the control input end of metal-oxide-semiconductor on-off circuit (103), the power input of described metal-oxide-semiconductor on-off circuit (103) is connected with the output terminal of many rotor unmanned aircrafts lithium polymer battery group (401), power output end is connected with the power-equipment (501) of many rotor unmanned aircrafts, described RC receiver (201) and RC telepilot (301) are by wireless connections.
2. the power switch device for electronic many rotor unmanned aircrafts according to claim 1, it is characterized in that: described power-switching circuit (101) comprises stabilized voltage supply chip U1 and capacitor C1, C2, C3, C4, described capacitor C 1 is connected with the pin one of stabilized voltage supply chip U1 with one end after C2 parallel connection, other end ground connection, described capacitor C 3 is connected with the pin 3 of stabilized voltage supply chip U1 with one end after C4 parallel connection, other end ground connection.
3. the power switch device for electronic many rotor unmanned aircrafts according to claim 1, it is characterized in that: described PPM signal comparator circuit (102) comprises PPM signal input interface JP1, two-way D class rising edge trigger U2, variohm R1, resistor R2, R3, capacitor C5, light emitting diode D1, wherein the pin one of PPM signal input interface JP1 is PPM signal input part, be connected with pin one 2 with the pin 3 of two-way D class rising edge trigger U2 respectively, the pin two of PPM signal input interface JP1 is connected with the pin 3 of stabilized voltage supply chip U1, pin 3 ground connection of PPM signal input interface JP1, the pin 5 of described two-way D class rising edge trigger U2 is by variohm R1 and capacitor C5 ground connection, node between pin 4 access variohm R1 and capacitor C5, the pin one 1 of two-way D class rising edge trigger U2 is connected with pin 5, the pin one of two-way D class rising edge trigger U2, pin one 0, pin one 3 is connected with the pin 3 of stabilized voltage supply chip U1, the pin 8 of two-way D class rising edge trigger U2 is connected with the pin 3 of stabilized voltage supply chip U1 with light emitting diode D1 by resistor R3, the pin two ground connection of two-way D class rising edge trigger U2, the pin 9 of two-way D class rising edge trigger U2 is connected with the base stage of NPN triode T1 by resistor R2.
4. the power switch device for electronic many rotor unmanned aircrafts according to claim 1, it is characterized in that: described metal-oxide-semiconductor on-off circuit (103) comprises input interface JP2, P channel MOS tube Q1, Q2, Q3, Q4, NPN triode T1, resistor R4, R5, output interface JP3, the collector of described NPN triode T1 passes through R4, R5 is connected with the pin two of input interface JP2, emitting stage ground connection, described P channel MOS tube Q1, Q2, Q3, after the drain electrode parallel connection of Q4, be connected with the pin two of input interface JP2, after source class parallel connection, be connected with the pin two of output interface JP3, after grid parallel connection, access resistor R4, node between R5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420173667.7U CN203799213U (en) | 2014-04-11 | 2014-04-11 | Power switching device for electric multi-rotor unmanned aerial vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420173667.7U CN203799213U (en) | 2014-04-11 | 2014-04-11 | Power switching device for electric multi-rotor unmanned aerial vehicle |
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| Publication Number | Publication Date |
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| CN203799213U true CN203799213U (en) | 2014-08-27 |
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| CN201420173667.7U Expired - Fee Related CN203799213U (en) | 2014-04-11 | 2014-04-11 | Power switching device for electric multi-rotor unmanned aerial vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115202430A (en) * | 2021-04-13 | 2022-10-18 | 拓尔微电子股份有限公司 | Reference voltage generating circuit and oscillator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115202430A (en) * | 2021-04-13 | 2022-10-18 | 拓尔微电子股份有限公司 | Reference voltage generating circuit and oscillator |
| CN115202430B (en) * | 2021-04-13 | 2024-05-24 | 拓尔微电子股份有限公司 | Reference voltage generating circuit and oscillator |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20190411 |