CN109178250A - A kind of Intelligent lifesaving circle with speech recognition - Google Patents
A kind of Intelligent lifesaving circle with speech recognition Download PDFInfo
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- CN109178250A CN109178250A CN201810985290.8A CN201810985290A CN109178250A CN 109178250 A CN109178250 A CN 109178250A CN 201810985290 A CN201810985290 A CN 201810985290A CN 109178250 A CN109178250 A CN 109178250A
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- lifebuoy
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- input terminal
- person
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- 230000009429 distress Effects 0.000 claims abstract description 42
- 235000009108 Urtica dioica Nutrition 0.000 claims abstract description 9
- 241000219422 Urtica Species 0.000 claims abstract description 8
- 239000003990 capacitor Substances 0.000 claims description 28
- 238000001914 filtration Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000005236 sound signal Effects 0.000 claims 1
- 230000006872 improvement Effects 0.000 description 19
- 238000000034 method Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010013647 Drowning Diseases 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 241000218215 Urticaceae Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007799 cork Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 231100000518 lethal Toxicity 0.000 description 1
- 230000001665 lethal effect Effects 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C9/00—Life-saving in water
- B63C9/08—Life-buoys, e.g. rings; Life-belts, jackets, suits, or the like
- B63C9/13—Life-buoys, e.g. rings; Life-belts, jackets, suits, or the like attachable to body member, e.g. arm, neck, head or waist
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/26—Speech to text systems
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Computational Linguistics (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Ocean & Marine Engineering (AREA)
- Quality & Reliability (AREA)
- Signal Processing (AREA)
- Mechanical Engineering (AREA)
- Alarm Systems (AREA)
Abstract
The invention discloses a kind of Intelligent lifesaving circle with speech recognition, its key points of the technical solution are that including microphone sensor, loudspeaker, ultrasonic sensor, motor, propeller, GPS positioning device, control device, power supply and nettle.When people are overboard in danger, person in distress is sent an SOS by calling out, when the keyword stored in the voice signal and lifebuoy system that microphone sensor receives matches, control device is waken up and sends to ultrasonic sensor, loudspeaker and motor and instructs, drive lifebuoy to move towards person in distress, person in distress can catch its nettle and close to lifebuoy to be rescued.This patent phonetic recognization rate for existing voice recognition lifebuoy is high, accurate positioning and can quickly find dangerous situation and person in distress is made to be out of danger.
Description
Technical field
The present invention relates to lifesaving appliance technical field, specifically a kind of Intelligent lifesaving circle with speech recognition.
Background technique
Every year about the news to drown, can translate on the report in area throughout the country.The especially raising of temperature,
Swimming peak period is also arrived therewith, and high-incidence trend is presented in drowned accident.According to incompletely statistics, China is death due to drowned every year
About 57000 people of number, drowning is also the number one killer of the lethal accident of teenager's unexpected injury.The reason of accident occurs has very much,
Sometimes because person in distress raises a cry, emergency but no one hear or hear cry but dare not implement to succour easily, sometimes because of water
Conditional complexity cannot sue and labour easily.If improper measures that rescuer took sue and labour, are easy to cause because being short of physical strength
The serious consequence that more people drown.
Lifebuoy is a main species in the most common water survival gear and lifesaving appliance, current many lifesaving
Work is completed using lifebuoy.Lifebuoy is usually by cork, foamed plastics or the lesser lightweight material of other specific gravity
It is made, canvas, plastics etc. are wrapped in outside.When person in distress is overboard, rescuer can easily jettisoning lifebuoy to person in distress, from
And realize rescue purpose.The lifebuoy rescued about the shout using person in distress is based on such as patent No. CN105083499A
The automatic positioning lifebuoy of sound control technique, when person in distress occur dangerous situation by shout to cry for help when, lifebuoy starting simultaneously it is automatic
Reach person in distress at one's side；But this method, which will receive ambient noise influence, will appear identification not sound of call for help, and positioning accuracy out
Difference cannot accurately determine the specific location of person in distress, and swim ring cannot be made to reach person in distress causes rescue to fail at one's side.
Summary of the invention
In response to the problems existing in the prior art, the purpose of the present invention is to provide a kind of Intelligent lifesavings with speech recognition
Circle.Intelligent lifesaving circle with speech recognition of the invention can quickly find drowned dangerous situation and independent navigation is to person in distress's body
Side.
To achieve the goals above, the present invention provides the following technical scheme that
A kind of Intelligent lifesaving circle with speech recognition, including lifebuoy shell；Lifebuoy housing upper surface is provided with Mike
Wind array apparatus, loudspeaker and ultrasonic sensor；Be provided in lifebuoy shell motor, propeller, GPS positioning device,
Control device and power supply；Its side is provided with nettle.
The lifebuoy shell is annular, and centre is sky, and there are two cylinder shape grooves for side；
The microphone array device is made of eight microphones, and is evenly distributed on the upper surface of lifebuoy shell, be used to pair
The spatial character of sound field carries out sampling processing and tracks the voice and subsequent speech sample of person in distress；
The loudspeaker has water-proof function, and loudspeaker is then opened when finding person in distress and carries out the note that alarm causes people around
Meaning；
There are two the ultrasonic sensors, the axis positioned at the top and two sensors of control device about lifebuoy shell
Line is symmetrical, and is connected with control device, for detecting barrier encountered in lifebuoy motion process；
The motor is set as two, and the main part of two motors is symmetrical about lifebuoy central axes, output shaft
It is extend into cylinder shape groove across lifebuoy shell；
The propeller is set as two, is distributed in the cylinder shape groove of lifebuoy casing lateral surfaces and defeated with two motors
Shaft is connected；
The GPS positioning device is mounted on the intracorporal upper surface of lifebuoy shell, for recording the path advanced when lifebuoy lifesaving,
According to its lifesaving path backtracking after the completion of person in distress's relief；
The control device is filled with microphone array device, loudspeaker, ultrasonic sensor, two motors and GPS positioning respectively
Set it is connected, when control device receive microphone array device transmission trigger signal after, pass through person in distress issue emergency sound
The difference of the time of eight microphone sensors is reached to calculate the angular regions of person in distress, control device makes loudspeaker issue report
Alert sound and driving motor rotation make lifebuoy autonomous navigation to person in distress at one's side；
The power supply is connected with microphone array device, control device, two motors respectively；
The nettle setting is screwed in lifebuoy outer side surface for the reticular structure intersected in length and breadth, fast convenient for person in distress
Speed effectively catches lifebuoy out of danger.
As a further improvement of the present invention, the cylinder shape groove is greater than spiral in lifebuoy side, depth of groove
The length of paddle and motor output shaft and；
As a further improvement of the present invention, the groove port position of the groove, which is provided with, avoids person in distress's body and propeller phase
The shield of contact, the shield are criss-cross rigid body reticular structure；
As a further improvement of the present invention, eight microphone sensors all have water-proof function and can be to the sound sources of acquisition
Noise in signal is filtered；
As a further improvement of the present invention, the filtering processing is that voice signal passes through a bandwidth-limited circuit, band logical filter
Wave circuit can be cascaded by a low-pass filter circuit and a high-pass filtering circuit, it is contemplated that practicability, it is desirable that band is negative
Loading capability is strong, needs to meet that input impedance is sufficiently large, and output impedance is sufficiently small, so to be selected as second order active low for low-pass filter
Bandpass filter typical structure, it is desirable that voice signal distortion is smaller, so high-pass filter is selected as unlimited gain multiple feedback and has
Source high-pass filter；
As a further improvement of the present invention, the low-pass filter includes first resistor R1, the input terminal of first resistor R1 with
Signal source is connected, and the output end of first resistor R1 is connected with the input terminal of the input terminal of the second capacitor C2 and second resistance R2；The
The output end of two resistance R2 is connected with the input terminal of the normal phase input end of the first operational amplifier A1 and first capacitor C1；Second electricity
The output end for holding C2 is connected with the output end of the first operational amplifier A1；The output end of first capacitor C1 is grounded；First operation is put
The inverting input terminal of big device A1 is connected with the input terminal of 3rd resistor R3 and the 4th resistance R4 input terminal, the output of 3rd resistor R3
End ground connection；4th resistance R4 output end is connected with the output end of the first operational amplifier A1；
As a further improvement of the present invention, the high-pass filter includes third capacitor C3, the input of the third capacitor C3
End is connected with the output end of the first operational amplifier A1；The input terminal of the output end of third capacitor C3 and the 4th capacitor C4, the 5th
The input terminal of the input terminal of capacitor C5 and the 5th resistance R5 are connected；The output end of 4th capacitor C4 and the output end of the 6th resistance R6
It is connected with the output end of second operational amplifier A2；The output end of 6th resistance R6 and the output end of the 5th resistance C5 and the second fortune
The inverting input terminal for calculating amplifier A2 is connected；The output end of 5th resistance R5 and the normal phase input end phase of second operational amplifier A2
Even；The positive input end grounding of second operational amplifier A2；
As a further improvement of the present invention, the ultrasonic sensor has water-proof function and type is transceiver type
To emit and receive simultaneously signal；
As a further improvement of the present invention, the motor output shaft passes through the waterproof sealing bearing that is fixed on lifebuoy shell
It extend into cylinder shape groove, the internal diameter of the waterproof sealing bearing is identical as the radius of motor output shaft；
As a further improvement of the present invention, control device is always maintained at sleep state before receiving trigger signal to save electricity
Can, start independently to search and rescue person in distress when receiving trigger signal；
Beneficial effects of the present invention: surrounding sound-source signal is acquired by microphone sensor array apparatus and sound-source signal is carried out
Filtering processing, the difference by the time of emergency sound eight microphone sensors of arrival of person in distress's sending are in danger accurately to calculate
Person's angular regions, and the subsequent voice of person in distress and oriented acquisition are tracked, make this that there is voice by control device driving motor
The Intelligent lifesaving circle independent navigation of identification at one's side, enables person in distress to catch lifebuoy and be rescued to person in distress.
Detailed description of the invention:
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is a kind of perspective view of Intelligent lifesaving circle with speech recognition
Fig. 2 is a kind of cross-sectional view of Intelligent lifesaving circle with speech recognition
Fig. 3 is a kind of system block diagram of Intelligent lifesaving circle with speech recognition
Fig. 4 is microphone array device speech detection schematic diagram
Fig. 5 is speech processing circuit figure
Fig. 6 is propeller set structural upright schematic diagram
1. lifebuoy shell of Detailed description of the invention, 11. cylinder shape grooves, 12. shields, 2. microphone sensors, 3. loudspeakers 4. surpass
Sonic sensor, 5. motors, 51. motor body parts, 52. motor output shafts, 53. waterproof sealing bearings, 6. propellers,
7.GPS positioning device, 8. control devices, 9. power supplys, 10. nettles, 101. screws, 102. waterproof ports
Specific embodiment:
With reference to the accompanying drawings and examples, the present invention is described in further details.The wherein identical attached drawing of identical part
Label is to indicate.
Referring to Fig.1 shown in -6, a kind of lifebuoy with speech recognition of the present embodiment, including lifebuoy shell 1；It is rescuing
Raw circle 1 upper surface of shell is provided with microphone array device 2, loudspeaker 3 and ultrasonic sensor 4；It is set in lifebuoy shell
It is equipped with motor 5, propeller 6, GPS positioning device 7, control device 8 and power supply 9；Its side is provided with nettle 10.
The lifebuoy shell 1 is annular, and centre is sky, and there are two cylinder shape grooves 11 for side；
The microphone array device 2 is made of eight microphones, and is evenly distributed on the upper surface of lifebuoy shell 1, is used to
Sampling processing is carried out to the spatial character of sound field and tracks the voice and subsequent speech sample of person in distress；
The loudspeaker 3 has water-proof function, and loudspeaker 3 is then opened when finding person in distress and carries out the note that alarm causes people around
Meaning；
There are two the ultrasonic sensors 4, positioned at control device 9 top and two sensors 4 about lifebuoy shell 1
Central axes are symmetrical, and are connected with control device 9, for detecting barrier encountered in lifebuoy motion process；
The motor 5 is set as two, and the main part 51 of two motors 5 is symmetrical about lifebuoy central axes, defeated
Shaft 52 passes through lifebuoy shell and extend into cylinder shape groove 11；
The propeller 6 is set as two, be distributed in the cylinder shape groove 11 of 1 side surface of lifebuoy shell and with two motors
5 output shaft 52 is connected；
The GPS positioning device 7 is mounted on the upper surface in lifebuoy shell 1, for recording the road advanced when lifebuoy lifesaving
Diameter, according to its lifesaving path backtracking after the completion of person in distress's relief；
The control device 8 is fixed with microphone array device 2, loudspeaker 3,4, two motors 5 of ultrasonic sensor and GPS respectively
Position device 7 is connected, and after control device 8 receives the trigger signal of the transmission of microphone array device 2, is issued by person in distress
Emergency sound reaches the difference of the time of eight microphone sensors 2 to calculate the angular regions of person in distress, and control device 8 makes loudspeaking
Device 3 issue alarm and driving motor 5 rotation make lifebuoy autonomous navigation to person in distress at one's side；
The power supply 9 is connected with 8, two microphone array device 2, control device motors 6 respectively；
The setting of nettle 10 is fixed for the reticular structure intersected in length and breadth with screw 101 in lifebuoy outer side surface, convenient for meeting
Dangerous person quickly and effectively catches lifebuoy out of danger.
As a further improvement of the present invention, the cylinder shape groove 11 is greater than spiral shell in lifebuoy side, depth of groove
Revolve paddle 6 and motor output shaft length and；
As a further improvement of the present invention, the groove port position of the groove, which is provided with, avoids person in distress's body and propeller 6
The shield 12 being in contact, the shield 12 are criss-cross rigid body reticular structure；
As a further improvement of the present invention, eight microphone sensors 2 all have water-proof function and can be to the sound of acquisition
Noise in source signal is filtered；
As a further improvement of the present invention, the filtering processing is that voice signal passes through a bandwidth-limited circuit, band logical filter
Wave circuit can be cascaded by a low-pass filter circuit and a high-pass filtering circuit, it is contemplated that practicability, it is desirable that band is negative
Loading capability is strong, needs to meet that input impedance is sufficiently large, and output impedance is sufficiently small, so to be selected as second order active low for low-pass filter
Bandpass filter typical structure, it is desirable that voice signal distortion is smaller, so high-pass filter is selected as unlimited gain multiple feedback and has
Source high-pass filter；
As a further improvement of the present invention, the low-pass filter includes first resistor R1, the input terminal of first resistor R1 with
Signal source is connected, and the output end of first resistor R1 is connected with the input terminal of the input terminal of the second capacitor C2 and second resistance R2；The
The output end of two resistance R2 is connected with the input terminal of the normal phase input end of the first operational amplifier A1 and first capacitor C1；Second electricity
The output end for holding C2 is connected with the output end of the first operational amplifier A1；The output end of first capacitor C1 is grounded；First operation is put
The inverting input terminal of big device A1 is connected with the input terminal of 3rd resistor R3 and the 4th resistance R4 input terminal, the output of 3rd resistor R3
End ground connection；4th resistance R4 output end is connected with the output end of the first operational amplifier A1；
As a further improvement of the present invention, the high-pass filter includes third capacitor C3, the input of the third capacitor C3
End is connected with the output end of the first operational amplifier A1；The input terminal of the output end of third capacitor C3 and the 4th capacitor C4, the 5th
The input terminal of the input terminal of capacitor C5 and the 5th resistance R5 are connected；The output end of 4th capacitor C4 and the output end of the 6th resistance R6
It is connected with the output end of second operational amplifier A2；The output end of 6th resistance R6 and the output end of the 5th resistance C5 and the second fortune
The inverting input terminal for calculating amplifier A2 is connected；The output end of 5th resistance R5 and the normal phase input end phase of second operational amplifier A2
Even；The positive input end grounding of second operational amplifier A2；
As a further improvement of the present invention, the ultrasonic sensor 4 has water-proof function and type is that transceiver type is
It can emit and receive signal simultaneously；
As a further improvement of the present invention, the power supply 9 be can charge and discharge lithium battery, 1 surface of lifebuoy shell have with
The waterproof port 102 of power source charges, waterproof port 102 are rubber product；
As a further improvement of the present invention, the motor output shaft 52 passes through the waterproof sealing shaft that is fixed on lifebuoy shell
It holds 53 to extend into cylinder shape groove 11, the internal diameter of the waterproof sealing bearing 53 is identical as the radius of motor output shaft 52；
As a further improvement of the present invention, control device 8 is always maintained at sleep state before receiving trigger signal to save electricity
Can, start independently to search and rescue person in distress when receiving trigger signal；
When people are overboard in danger, for the instinct of lifesaving, person in distress can cry out the keywords such as " help ", " rescuing me ", " help ",
When voice signal is transmitted to microphone sensor 2, microphone sensor 2 is filtered ambient noise, from containing
Clean speech is extracted in noisy speech signal.When the keyword stored in the voice signal and lifebuoy system received matches,
Microphone sensor 2 sends trigger signal to control device 8, and reaches eight Mike's hearsay by the emergency sound that person in distress issues
The difference of the time of sensor 2 accurately to calculate person in distress's angular regions, and the subsequent voice of tracking person in distress simultaneously orients pickup.Control
When device 8 receives the trigger signal that microphone sensor 2 is sent, control device 8 is waken up, control device 8 to loudspeaker 3,
Ultrasonic sensor 4 and motor 5 send instruction, and loudspeaker 3, ultrasonic sensor 4 and motor 5 is made to start to work.Motor 5 receives
The control instruction that control device 8 is sent starts turning, the angular regions fortune that driving lifebuoy is calculated towards microphone sensor 2
It is dynamic, while ultrasonic sensor 4 detects the barrier in motion path, two revolving speeds for making control device 8 adjust motor 5 make to rescue
Raw circle avoiding obstacles.
Above embodiments are only exemplary embodiment of the present invention, are not used in the limitation present invention, protection scope of the present invention
It is defined by the claims.Those skilled in the art can within the spirit and scope of the present invention make respectively the present invention
Kind modification or equivalent replacement, this modification or equivalent replacement also should be regarded as being within the scope of the present invention.
Claims (3)
1. a kind of Intelligent lifesaving circle with speech recognition, it is characterised in that: equipped including lifebuoy shell (1), microphone array
Set (2), loudspeaker (3), ultrasonic sensor (4),
Motor (5), propeller (6), GPS positioning device (7), control device (8), power supply (9) and nettle (10)；
The microphone array device (2) is made of eight microphones, by conducting wire L1 and control device (8) and conducting wire L2 and
Power supply (9) is connected, and is evenly distributed on the upper surface of lifebuoy shell (1), is sampled simultaneously for the spatial character to sound field
Noise in the sound-source signal of acquisition is filtered；
The loudspeaker (3) is placed in the upper surface of lifebuoy shell (1), is connected by conducting wire L3 with control device (8), for sending out
Alarm sound causes people around to pay attention to out；
There are two the ultrasonic sensors (4), be located at control device (8) top and two ultrasonic sensors (4) about
The central axes of lifebuoy shell (1) are symmetrical, and are connected by conducting wire L4 with control device (8)；
The motor (5) is set as two, and the main part (51) of two motors is symmetrical about lifebuoy central axes, and
It is connected by conducting wire L5 with control device (8), output shaft (52) passes through lifebuoy shell (1) and extend into cylinder shape groove
(11) in；
The propeller (6) is set as two, be distributed in the cylinder shape groove (11) of lifebuoy shell (1) and with two motors
(5) output shaft (52) is connected；
The GPS positioning device (7) is mounted on the upper surface in lifebuoy shell (1), and passes through conducting wire L6 and control device (8)
It is connected, for recording the path advanced when lifebuoy lifesaving；
The control device (8) respectively with microphone sensor (2), loudspeaker (3), ultrasonic sensor (4), two motors
(5), GPS positioning device (7) is connected with power supply (9), when control device (8) receives the transmission of microphone sensor array apparatus
After trigger signal, the emergency sound issued by person in distress reaches the difference of the time of eight microphone sensors to calculate person in distress
Angular regions, driving motor (5) rotation make lifebuoy autonomous navigation to person in distress at one's side；
The power supply (9) passes through conducting wire L2, L7, L8 and microphone array device (2), control device (8), two motors respectively
(5) it is connected；
Nettle (10) setting is fixed, just in lifebuoy outer side surface for the reticular structure intersected in length and breadth with screw (101)
Quickly and effectively catch lifebuoy out of danger in person in distress.
2. the Intelligent lifesaving circle according to claim 1 with speech recognition, it is characterised in that: the filtering processing is sound
Sound signal passes through a bandwidth-limited circuit, and bandwidth-limited circuit is by a low-pass filter circuit and a high-pass filtering circuit grade
Join, low-pass filter is second order active, and high-pass filter is that unlimited gain multiple feedback is active；
The low-pass filter includes first resistor R1, and the input terminal of first resistor R1 is connected with signal source, first resistor R1's
Output end is connected with the input terminal of the input terminal of the second capacitor C2 and second resistance R2；The output end of second resistance R2 and the first fortune
The normal phase input end for calculating amplifier A1 is connected with the input terminal of first capacitor C1；The output end of second capacitor C2 is put with the first operation
The output end of big device A1 is connected；The output end of first capacitor C1 is grounded；The inverting input terminal and third of first operational amplifier A1
The input terminal of resistance R3 and the 4th resistance R4 input terminal are connected, the output end ground connection of 3rd resistor R3；4th resistance R4 output end
It is connected with the output end of the first operational amplifier A1；
The high-pass filter includes third capacitor C3, and the input terminal of the third capacitor C3 and the first operational amplifier A1's is defeated
Outlet is connected；The input terminal and the 5th resistance of the input terminal of the output end of third capacitor C3 and the 4th capacitor C4, the 5th capacitor C5
The input terminal of R5 is connected；The output of the output end and second operational amplifier A2 of the output end and the 6th resistance R6 of 4th capacitor C4
End is connected；The inverting input terminal phase of the output end of 6th resistance R6 and the output end of the 5th resistance C5 and second operational amplifier A2
Even；The output end of 5th resistance R5 is connected with the normal phase input end of second operational amplifier A2；Second operational amplifier A2 is just
Phase input end grounding.
3. the Intelligent lifesaving circle according to claim 1 with speech recognition, it is characterised in that: the control device (8)
Sleep state is always maintained at before receiving trigger signal to save electric energy, starts independently to search and rescue when receiving trigger signal in danger
Person.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810985290.8A CN109178250A (en) | 2018-08-28 | 2018-08-28 | A kind of Intelligent lifesaving circle with speech recognition |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810985290.8A CN109178250A (en) | 2018-08-28 | 2018-08-28 | A kind of Intelligent lifesaving circle with speech recognition |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020186691A1 (en) * | 2019-03-20 | 2020-09-24 | 江苏海事职业技术学院 | Intelligent lifesaver with speech recognition positioning function |
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| CN105094136A (en) * | 2015-09-14 | 2015-11-25 | 桂林电子科技大学 | Adaptive microphone array sound positioning rescue robot and using method thereof |
| CN206643934U (en) * | 2017-03-31 | 2017-11-17 | 长春理工大学 | Multi-information acquisition perceives search and rescue robot |
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