CN110143182A - A kind of opening vehicle door collision prior-warning device based on ultrasonic listening - Google Patents
A kind of opening vehicle door collision prior-warning device based on ultrasonic listening Download PDFInfo
- Publication number
- CN110143182A CN110143182A CN201910417980.8A CN201910417980A CN110143182A CN 110143182 A CN110143182 A CN 110143182A CN 201910417980 A CN201910417980 A CN 201910417980A CN 110143182 A CN110143182 A CN 110143182A
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- Prior art keywords
- ultrasonic
- power
- car door
- door
- ultrasonic listening
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J5/00—Doors
- B60J5/04—Doors arranged at the vehicle sides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The invention discloses a kind of, and the opening vehicle door based on ultrasonic listening collides prior-warning device, including ultrasonic listening system, signal processing system, car door logic control system and electric supply system.Ultrasonic listening system is made of ultrasonic transmitter, power amplifier, frequency generator, ultrasonic receiver, advance signal amplifying circuit and phaselocked loop detecting circuit；Signal processing system is made of timer, I/O interface, analog-digital converter and logic processing circuit；Car door logic control system refers to Car's door controlling logic processing circuit；Electric supply system refers to voltage dropping power supply module.By signal processing circuit, moment is requested opening the door, can be leading doors locked 2 seconds, detection of obstacles is carried out, while passenger being guided to carry out active observation, reaches and opening car door moment is avoided to crash.
Description
Technical field
The present invention relates to apply ultrasonic listening ranging technology field, specifically a kind of vapour based on ultrasonic listening
Vehicle car door opening collides prior-warning device.
Background technique
Parking of automobile opens the door, and often occurs in the car lane of the road leftmost side or the leftmost side.Arrangements for automotive doors
When unlatching, the non-motor vehicle in Chang Huiyu traveling collides, and damages to non-motor vehicle driver and vehicle.It is this to touch
Hit, the reason of generation there are two.First is that due to present non-motor vehicle have speed it is fast, the feature of stability difference, side by
It is easy to topple over when shock.Second is that door opening process is very short, interior passenger may forget to observe backward.As car owner or vehicle
On passenger, it should remember lower Chinese herbaceous peony as far as possible it is noted that observation rear, while being reminded by some technological means, guiding and multiply
The observation movement of visitor is also necessary to this kind of traffic accidents are reduced.Wang Tao et al. 2015 in a kind of " opening car door anticollision
Attention device " a kind of evidence solution when proposing car door opening in (204586653 U of CN), main thought is lighted before opening the door
The LED light at vehicle rear, warning front vehicle evacuation.But this method can only play suggesting effect, and do not have to interior passenger
There is effect of contraction.It is limited to the limitation that non-motor vehicle speed is fast, the door opening action duration is short, if not motor vehicle driver is not note
It anticipates in power complete set, warning effect is unobvious.
Summary of the invention
Present invention aim to address when motor vehicle opens the door and the problem of the non-motor vehicle that passes by may collide, benefit
With ultrasonic listening come the presence of disturbance in judgement object (non-motor vehicle), and the passenger of enabling is guided to observe.The present invention includes
Ultrasonic listening system, signal processing system and door control system.Wherein ultrasonic listening system is by ultrasonic wave emission system
With the system of reception composition, the detection to barrier is completed；Core processing system controls ultrasonic wave transmitting, processing ultrasonic receiver
Received data, and make corresponding, control car door.Since the passenger of the direct clamshell doors of the device and car door make constraint, mainly
Using ultrasonic listening barrier, and passenger is guided to carry out active observation, therefore the effect of Anti-knocking becomes apparent from.
Realizing the specific technical solution of the object of the invention is:
A kind of opening vehicle door collision prior-warning device based on ultrasonic listening, feature is that it includes ultrasonic listening system
System, signal processing system, car door logic control system and electric supply system；The ultrasonic listening system is emitted by ultrasonic wave
Device, power amplifier, frequency generator, ultrasonic receiver, advance signal amplifying circuit and phaselocked loop detecting circuit are constituted；
In the ultrasonic listening system, frequency generator, power amplifier, ultrasonic transmitter are sequentially connected；Ultrasound
Wave receiver, advance signal amplifying circuit and phaselocked loop detecting circuit are sequentially connected；
The signal processing system is made of timer, I/O interface, analog-digital converter and logic processing circuit；Hardware is fixed
When device, I/O interface, analog-digital converter connect respectively with logic processing circuit；I/O interface, analog-digital converter respectively with ultrasonic wave
Frequency generator, the connection of phaselocked loop detecting circuit in detection system；
The car door logic control system includes Car's door controlling logic processing circuit；At car door logic control system and signal
Logic processing circuit in reason system；
The power supply module includes AC-DC conversion module, power power-supply, the first power supply and second source；Alternating current-direct current
Conversion module is connect with power power-supply, the first power supply and second source respectively；Power power-supply, the first power supply and second source difference
It is connected with the power interface in ultrasonic listening system, signal processing system, car door logic control system.
Power power-supply of the present invention is 12V, the first power supply is 3.3V；Second source is 5V.
The present invention, come the presence of disturbance in judgement object (non-motor vehicle), and guides the passenger of enabling to carry out using ultrasonic listening
Observation.The present invention includes ultrasonic listening system, signal processing system and car door logic control system.Wherein ultrasonic listening system
System is made of ultrasonic wave emission system and reception system, completes the detection to barrier；Signal processing system controls ultrasonic wave hair
It penetrates, handle the received data of ultrasonic receiver, and make corresponding, control car door.Due to the passenger of directly clamshell doors of the invention
Constraint is made with car door, mainly utilizes ultrasonic listening barrier, and passenger is guided to carry out active observation, therefore the effect of Anti-knocking
Fruit becomes apparent from.
Detailed description of the invention
Fig. 1 is structural block diagram of the invention；
Fig. 2 is ultrasonic listening system mounting location of the present invention and detection angle range (top view)；
Fig. 3 is workflow schematic diagram of the present invention.
Specific embodiment
The present invention will be described in detail with reference to the accompanying drawings and embodiments.
Refering to fig. 1, the present invention includes ultrasonic listening system 1, signal processing system 2, car door logic control system 3 and electricity
Source power supply system 4；The ultrasonic listening system 1 is by ultrasonic transmitter 11, power amplifier 12, frequency generator 13, super
Acoustic receiver 14, advance signal amplifying circuit 15 and phaselocked loop detecting circuit 16 are constituted, frequency generator 13, power amplifier
12, ultrasonic transmitter 11 is sequentially connected；Ultrasonic receiver 14, advance signal amplifying circuit 15 and phaselocked loop detecting circuit 16
It is sequentially connected.
The signal processing system 2 is made of timer 21, I/O interface 22,23 logic processing circuit 24 of analog-digital converter,
Timer 21, I/O interface 22, analog-digital converter 23 are connect with logic processing circuit 24 respectively；I/O interface 22, analog-digital converter
It is connect respectively with frequency generator 13, phaselocked loop detecting circuit 16 in ultrasonic listening system 1.
The car door logic control system 3 refers to Car's door controlling logic processing circuit；Car door logic control system 3 respectively and letter
Logic processing circuit 24 in number processing system 2 connects.
The power supply module 4 includes AC/DC changeover switch 41, power power-supply 42, the first power supply 43 and second source
44；AC/DC changeover switch 41 is connect with power power-supply 42, the first power supply 43 and second source 44 respectively；Power power-supply 42, first
Power supply 43 and second source 44 electricity in ultrasonic listening system 1, signal processing system 2, car door logic control system 3 respectively
Source interface connection.
Embodiment
1) it installs
Refering to fig. 1, the present invention includes ultrasonic listening system 1, signal processing system 2, car door logic control system 3 and electricity
Source power supply system 4；Ultrasonic listening system 1 is integrated on a piece of small scale printed circuitry plate, and is made shell and played waterproof action.
When installation, ultrasonic listening system 1 should be installed on car right side rearview mirror, and at the mark of attached drawing 2 (1), and ultrasonic wave is sent out
Penetrating direction should be towards the inclined 10 ° of left and right directions in dead astern, as shown in 2 dash area of attached drawing.To signal processing system 2, car door logic
Control system 3 and electric supply system 4, designated mounting position, need to only not complete circuit connection.
Line relationship inside the present invention indicates in a specific embodiment.It during installation, need to be by the car door of vehicle
Control line is connected on the input interface of car door logic control system 3.The power supply of the present apparatus is derived from the battery of automobile, therefore also needs
The power supply of automobile storage battery is connected on the input interface of power supply module 4.The AC/DC changeover switch 41 of power supply module 4
Can adaptive battery voltage, and filter out the AC ripple ingredient of voltage.
2) work of logic processing circuit
Refering to fig. 1, logic processing circuit 24 activates frequency generator 13 (NE555) to generate 40kHz telecommunications by I/O mouth 22
Number；Logic processing circuit 24 receives the output analog electrical signal of phaselocked loop detecting circuit 16, and is converted by analog-digital converter 23
In memory at digital signal storage；Logic processing circuit 24 issues instructions to car door by monostable flipflop (NE555)
Logic control system 3.
The signal that logic processing circuit 24 receives is stored in internal memory.At the time of car door opening, it can touch
The input capture of timer 21 is sent out, the signal captured carries out detection of obstacles work with pulse shaping trigger circuit.
3) ultrasonic listening system works
Refering to fig. 1, after frequency generator 13 is enabled by I/O mouthfuls by logic processing circuit 24, the electricity of 40kHz can be generated
Signal sends ultrasonic transmitter (voltage controlled oscillator) 11 to and emits ultrasonic wave after the amplification of power amplification circuit 12.
Ultrasonic receiver 14 receives the ultrasonic signal in air, and signal source is mainly that ultrasonic transmitter 11 is sent out
Penetrate the reflection signal of signal.By measuring its intensity, it can be determined that whether front has the distance of barrier and barrier.
It is defeated to send analog-digital converter 23 to after the amplification of advance signal amplifying circuit 15 and phaselocked loop detecting circuit 16 are handled for the signal
Inbound port.
4) Car's door controlling signal wire and car door logic control system
Car door signal control line refers to before not installing the present apparatus, the electric signal control line locked to car door.Installation
After the present apparatus, the locking of car door will be determined not only by this root electric signal control line, the control also issued by logic processing circuit 24
Instruction determines that the two is handled through car door logic control system 3.The function that car door logic control system is realized is: only two controls
Signal wire processed all indicates that car door opening, car door can just be opened；As long as having one, first the locking of instruction car door, car door cannot be beaten
It opens.The output signal of car door logic control system 3 controls car door.
5) electric supply system
Refering to fig. 1, the power supply of ultrasonic listening system 1, signal processing system 2 and door control system 3 is by power-supply system 4
It provides.Ultrasonic listening system 1 needs certain power drive, therefore power supply selects 12V power electricity due to needing to emit ultrasonic wave
Source 42.Logic processing circuit 24 in signal processing system 2 requires 3.3V to power, therefore this part is supplied using 3.3V power supply 43
Electricity.Car door logic control system 3 uses standard TTL logic level, is powered with 5V power supply 44.Three kinds of power supplys are all by vehicle battery
It is converted by AC/DC changeover switch 41.
6) testing process
Testing process is refering to Fig. 3:
6.1, when passenger requires to open the door, in the moment that door handle is pressed, logic processing circuit 24 triggers frequency
Device 13 is started to work, and emits ultrasonic wave by ultrasonic transmitter 11.Ultrasonic receiver starts to receive signal, and will be at signal
It is stored in after reason in the memory of logic processing circuit 24.This process is defined as obstacle pre-detection process, detects car door rear
There is clear within the scope of about 25 meters, within the scope of the about 1.5m of vehicle body side.Therefore, 10 ° of ultrasonic detector detection (refering to Fig. 2
Dash area) barrier in range, so that it may ratio more fully covers detection range.This part detection time estimation:
Ultrasonic propagation time:24 working frequency 108MHz of logic processing circuit, therefore it is handled
Time can be ignored.So total response time is exactly about 0.1s.
Regardless of testing result, all locking door in meeting at this time, reason has two: 1) only once detection result is not accurate enough,
The case where can not definitely reflecting barrier；2) guidance passenger carries out active observation to rear of vehicle.
6.2, ultrasonic wave is propagated can decay in air, follow regularity of decaying: I (x)=I (0) exp (- ax), therefore can be with
The ultrasonic intensity received extrapolates obstacle distance:
6.3, it after detecting for the first time, is once being detected after being spaced 2s.Non-motor vehicle F-Zero can reach
40km/h, therefore the distance advanced in 2s is 22m.According to being likely to occur result: signal a) detected for the second time and first time
Signal is consistent, then illustrates no barrier, at this moment can release vehicle door lock；B) second of detectable signal it is counter release barrier away from
From being less than with a distance from first time, indicate that there is moving obstacle at car door rear, therefore car door needs to keep locking, until the letter detected
Number disappear.
Claims (1)
1. a kind of opening vehicle door based on ultrasonic listening collides prior-warning device, which is characterized in that it includes that ultrasonic wave is visited
Examining system (1), signal processing system (2), car door logic control system (3) and power-supply system (4), the ultrasonic listening system
(1) by ultrasonic transmitter (11), power amplifier (12), frequency generator (13), ultrasonic receiver (14), advance signal
Amplifying circuit (15) and phaselocked loop detecting circuit (16) are constituted；
In the ultrasonic listening system (1), frequency generator (13), power amplifier (12), ultrasonic transmitter (11) according to
It is secondary to be connected；Ultrasonic receiver (14), advance signal amplifying circuit (15) and phaselocked loop detecting circuit (16) are sequentially connected；
The signal processing system (2) is by timer (21), I/O interface (22), analog-digital converter (23) and logic processing circuit
(24) it constitutes；Timer (21), I/O interface (22), built-in ADC(23) it is connect respectively with logic processing circuit (24)；I/O interface
(22), analog-digital converter (23) respectively with frequency generator (13), phaselocked loop detecting circuit (16) in ultrasonic listening system (1)
Connection；
The car door logic control system (3) is Car's door controlling logic processing circuit；At car door logic control system (3) and signal
Logic processing circuit (24) connection in reason system (2)；
The power module (4) includes AC-DC conversion module (41), power power-supply (42), the first power supply (43) and second source
(44), AC-DC conversion module (41) is connect with power power-supply (42), the first power supply (43) and second source (44) respectively；Power
Power supply (42), the first power supply (43) and second source (44) respectively with ultrasonic listening system (1), signal processing system (2), vehicle
The power interface of gate logic control system (3) connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910417980.8A CN110143182A (en) | 2019-05-20 | 2019-05-20 | A kind of opening vehicle door collision prior-warning device based on ultrasonic listening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910417980.8A CN110143182A (en) | 2019-05-20 | 2019-05-20 | A kind of opening vehicle door collision prior-warning device based on ultrasonic listening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110143182A true CN110143182A (en) | 2019-08-20 |
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ID=67592227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910417980.8A Pending CN110143182A (en) | 2019-05-20 | 2019-05-20 | A kind of opening vehicle door collision prior-warning device based on ultrasonic listening |
Country Status (1)
| Country | Link |
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| CN (1) | CN110143182A (en) |
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| CN103448611A (en) * | 2013-08-04 | 2013-12-18 | 郭金虎 | Automobile opening-door anti-collision control system |
| CN104590155A (en) * | 2013-11-01 | 2015-05-06 | 大陆汽车投资（上海）有限公司 | Device preventing car door from colliding with object when car door is opened |
| CN104908696A (en) * | 2015-06-05 | 2015-09-16 | 罗友 | Car door opening collision prevention device |
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| CN107867154A (en) * | 2017-11-03 | 2018-04-03 | 上海理工大学 | A kind of control method of vehicle door anti-collision lock control system |
| CN108032801A (en) * | 2017-12-08 | 2018-05-15 | 中山市天隆燃具电器有限公司 | A kind of door opening anti-collision device of new-energy automobile |
| CN108216027A (en) * | 2018-01-17 | 2018-06-29 | 重庆交通大学 | Passenger opens the door and gets off anti-collision early warning system |
| CN108674362A (en) * | 2018-04-26 | 2018-10-19 | 上海工程技术大学 | Anti- rearward collision early warning locking device when a kind of automobile door opening |
-
2019
- 2019-05-20 CN CN201910417980.8A patent/CN110143182A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201646621U (en) * | 2010-01-29 | 2010-11-24 | 上海市控江中学 | Device for preventing automobile door from being collided |
| DE102011076340A1 (en) * | 2011-05-24 | 2012-11-29 | Robert Bosch Gmbh | Method and device for warning road users |
| CN103448611A (en) * | 2013-08-04 | 2013-12-18 | 郭金虎 | Automobile opening-door anti-collision control system |
| CN104590155A (en) * | 2013-11-01 | 2015-05-06 | 大陆汽车投资（上海）有限公司 | Device preventing car door from colliding with object when car door is opened |
| CN104908696A (en) * | 2015-06-05 | 2015-09-16 | 罗友 | Car door opening collision prevention device |
| CN205743435U (en) * | 2016-05-15 | 2016-11-30 | 上海积速汽车科技有限公司 | Contactless door control system |
| CN107867154A (en) * | 2017-11-03 | 2018-04-03 | 上海理工大学 | A kind of control method of vehicle door anti-collision lock control system |
| CN108032801A (en) * | 2017-12-08 | 2018-05-15 | 中山市天隆燃具电器有限公司 | A kind of door opening anti-collision device of new-energy automobile |
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| CN108674362A (en) * | 2018-04-26 | 2018-10-19 | 上海工程技术大学 | Anti- rearward collision early warning locking device when a kind of automobile door opening |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20190820 |