CN209208757U - A kind of pneumatic noise reduction system of bullet train - Google Patents
A kind of pneumatic noise reduction system of bullet train Download PDFInfo
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- CN209208757U CN209208757U CN201822225674.8U CN201822225674U CN209208757U CN 209208757 U CN209208757 U CN 209208757U CN 201822225674 U CN201822225674 U CN 201822225674U CN 209208757 U CN209208757 U CN 209208757U
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Abstract
The utility model discloses a kind of pneumatic noise reduction system of bullet train, which includes signal picker, controller and two air cannon generating devices；Signal picker is connect with controller, and the controller is also connect with two air cannon generating devices；Each air cannon generating device includes air stream transmitter, total air duct, the first supercharging equipment and the second supercharging equipment, and each supercharging equipment is connect by total air duct with the air inlet of air stream transmitter；First supercharging equipment and the second supercharging equipment are connect with controller.The utility model is based on air jet to the interference performance in boundary layer, pass through active noise reduction system under the premise of not changing train shape and material in conjunction with the aerodynamic characteristic in bullet train traveling process, improve train pneumatic characteristic, improves the comfort level and energy-saving safe of train.
Description
Technical field
The utility model belongs to technical field of rail traffic, and in particular to a kind of pneumatic noise reduction system of bullet train.
Background technique
In the past 10 years, while the development that high-speed rail cause is advanced by leaps and bounds in China, bullet train noise problem is more and more tighter
Weight.According to correlative study, when train speed is less than 315km/h, urban rail noise is main noise source, at noise and train
2.6 powers of speed are directly proportional；When train speed is greater than 315km/h, aerodynamic noise plays absolute leading role, pneumatically makes an uproar
Sound is directly proportional to 7 powers of train speed, so, noise has become the problem of restricting one of train speed raising and can not be ignored.
Existing noise reduction approach be mainly pass through optimization car body streamline be related to and car door, vehicle window compartment between it is smooth
Processing, while acoustic material is added to optimize environment of riding in compartment on side wall.However, existing noise-reduction method effect has
Limit, in fact in bullet train traveling process, noise, which forms turbulent flow with laminar flow separation at the tailstock, inseparable relationship.
Therefore it is badly in need of at present a kind of in the case where not changing the shape of vehicle, be effectively reduced that train generates during high-speed cruising makes an uproar
The method of sound.
Utility model content
For above-mentioned deficiency in the prior art, the pneumatic noise reduction system of bullet train provided by the utility model solves existing
There is the pneumatic noise-reduction method effect of bullet train limited, does not account for generation and headstock or the tailstock airflow layer separation relation of noise
The problem of.
In order to reach above-mentioned purpose of utility model, the technical solution adopted in the utility model are as follows: a kind of bullet train is pneumatic
Noise reduction system, including signal picker, controller and two air cannon generating devices；
The signal picker and air cannon generating device are connect with controller；
Each air cannon generating device includes air stream transmitter, total air duct, the first supercharging equipment and
Two supercharging equipments, each supercharging equipment are connect by total air duct with the air inlet of air stream transmitter；
First supercharging equipment and the second supercharging equipment are connect with controller.
Further, the signal picker includes several noise transducers and several clap formula pressure-sensitive piece, Mei Gesuo
It states noise transducer and claps formula pressure-sensitive piece and connect with controller；The noise transducer is set to inside every section compartment,
The bat formula pressure-sensitive piece is set to every section compartment top outer surface；
The controller is set in Train Control room；
Two air cannon generating devices are respectively arranged at train head's top outer surface and tailstock top outer table
Face.
Further, first supercharging equipment and the second supercharging equipment structure are identical, mechanical, electrical including cylinder, exhausting
Machine, air duct, check valve, solenoid valve, pressure sensor and two range sensors；
The gas outlet of the air inlet of the cylinder and exhaust fan connects, the gas outlet of the cylinder by air duct with
Total air duct connection；
The check valve is set on the air inlet of cylinder；
The solenoid valve is set on air duct；
Two range sensors are respectively arranged at the top surface and bottom surface of the piston rod of cylinder, the piston rod top
Portion is connected to motor
The pressure sensor is set to cylinder interior；
The exhaust fan, solenoid valve, two range sensors and pressure sensor are connect with controller, and the motor is logical
Overdrive circuit is connect with controller.
Further, the air stream transmitter includes several air stream launching tubes equidistantly arranged in parallel；
The air inlet of each air stream launching tube is connect with total air duct；
Air inlet one end bottom of the air stream transmitter adjusts component by direction and is fixed on outside train head top
Side surface or tailstock top outer surface；
The direction adjustment component includes angular transducer, mechanical diverter and turns to driving motor, and the angle passes
Sensor is set on mechanical diverter, and the direction adjustment end of the mechanical diverter is connect with air stream transmitter, described
Mechanical diverter is connect by turning to driving motor with controller.
Further, the controller is STC12C5A60S2 series monolithic；
The noise transducer is TZ-2KA type noise transducer；
The motor and steering driving motor are maxon DCX motor；
Main control chip model L298N in the driving circuit；
The model of the pressure sensor is specially FCC-200N；
The model of the range sensor is specially LP-50F；
The model of the angular transducer is specially HAPS21.
The utility model has the following beneficial effects: the pneumatic noise reduction system of bullet train provided by the utility model, is based on air
Jet stream is not changing train shape and material in conjunction with the aerodynamic characteristic in bullet train traveling process to the interference performance in boundary layer
Under the premise of material, by active noise reduction system, improve train pneumatic characteristic, improves the comfort level and energy-saving safe of train.
Detailed description of the invention
Fig. 1 is the utility model high speed train pneumatic noise reduction system structure chart；
Fig. 2 is signal amplification circuit schematic diagram in the utility model；
Fig. 3 is the first supercharging equipment and the second supercharging equipment structure chart in the utility model；
Fig. 4 is air stream emitter structures figure in the utility model；
Fig. 5 be realize pneumatic noise reduction Airflow in the utility model flow to schematic diagram；
Wherein: 1, signal picker；2, air cannon generating device；3, controller；4, air stream transmitter；5, total air stream
Conduit；6, exhaust fan；7, motor；8, cylinder；9, piston rod；10, range sensor；11, pressure sensor；12, air conductance
Pipe；13, solenoid valve；14, air stream launching tube；15, check valve.
Specific embodiment
Specific embodiment of the present utility model is described below, in order to facilitate understanding by those skilled in the art
The utility model, it should be apparent that the utility model is not limited to the range of specific embodiment, to the common skill of the art
For art personnel, if various change the attached claims limit and determine the utility model spirit and scope in,
These variations are it will be apparent that all are created using the utility model of the utility model design in the column of protection.
As shown in Figure 1, a kind of pneumatic noise reduction system of bullet train, including signal picker 1, controller 3 and two air
Rifle generating device 2；
Signal picker 1 and air cannon generating device 2 are connect with controller 3；
Each air cannon generating device 2 includes air stream transmitter 4, total air duct 5, the first supercharging equipment and second
Supercharging equipment, each supercharging equipment are connect by total air duct 5 with the air inlet of air stream transmitter 4；
First supercharging equipment and the second supercharging equipment are connect with controller 3.
Wherein, signal picker 1 includes several noise transducers and several clap formula pressure-sensitive piece, each noise transducer
It is connect with controller 3 with formula pressure-sensitive piece is clapped；Noise transducer be as built in microphone one the condenser type of sound sensitive is stayed
Electret microphone, sound wave vibrate the electret film in microphone, lead to the variation of capacitor, and generate the small of variation of being corresponding to it
Voltage, to realize the conversion of acoustical signal to electric signal；Noise transducer is placed in middle part in each compartment, for acquiring train
Interior converts a faint capacitance voltage signal for the voice signal due to the noise that air-flow generates in driving process
It exports by signal amplification circuit to controller 3, the particular circuit configurations of the signal amplification circuit are as shown in Fig. 2, common emitter
Amplifying circuit has biggish voltage amplification, Current amplifier and power amplification multiple, and input resistance is small, and output resistance is big, ginseng
The characteristics of number rather moderate.Bat formula pressure-sensitive piece is sticked at the position that Train surface surveys pressure, then will be connected with each pressure-sensitive piece
Plastic syringe guides on vehicle the place for having opening along car body outer surface, can effectively substitute pressure tap without damaging car body table
Face will clap formula pressure-sensitive piece and be set to every section compartment top outer surface, acquires the gas of vehicle exterior during train driving
Flowing pressure signal is simultaneously uploaded to controller 3.
Controller 3 is set in Train Control room, the noise signal and bat that controller 3 can be acquired according to noise transducer
The movement of the stream pressure distribution situation control air cannon generating device 2 of formula pressure-sensitive piece acquisition；
Two air cannon generating devices 2 are respectively arranged at train head's top outer surface and tailstock top outer surface,
Launch high-speed air flow according to the control signal of controller 3, realizes pneumatic noise reduction.
As shown in figure 3, the first supercharging equipment and the second supercharging equipment structure are identical, it include cylinder 8, exhaust fan 6, motor
7, air duct 12, check valve 15, solenoid valve 13, pressure sensor 11 and two range sensors 10；
The air inlet of cylinder 8 is connect with the gas outlet of exhaust fan 6, and the gas outlet of cylinder 8 is by air duct 12 and always
Air duct 5 connects；
Check valve 15 is set on the air inlet of cylinder 8, when the air in cylinder 8 is full of, does air pressure by piston rod 9
When contracting acts, the pressure generated to 8 air inlet of cylinder can be such that check valve 15 is automatically closed, and a part is empty when avoiding air compression
Gas can go out from 8 air inlet of cylinder, influence air stream launching effect；
Solenoid valve 13 is set on air duct 12, when cylinder 8 is generated and transmitted by air stream, in the control of controller 3
Under system, solenoid valve 13 can be automatically closed or open, and coordinate the work of two supercharging equipments, be more efficiently generated and transmitted by air
Stream；
Two range sensors 10 are respectively arranged at the top surface and bottom surface of the piston rod 9 of cylinder 8, piston rod 9
Top is connect with motor 7；The range sensor 10 at 9 top of piston rod detects at the top of piston rod 9 to 8 upper surface of cylinder distance hair
When changing, controller 3 controls solenoid valve 13 and opens, and starts to emit air stream, when the range sensor 10 of 9 bottom of piston rod is examined
When measuring 9 bottom of piston rod and touching 8 bottom inner surface of cylinder, controller 3 controls motor 7 and piston rod 9 is driven to playback, and closes
Solenoid valve 13 terminates the air stream transmitting of current booster equipment；
Pressure sensor 11 is set to inside cylinder 8, for detecting the air pressure in cylinder 8, and then judges air in cylinder 8
Whether it is full of；
Exhaust fan 6,13, two range sensors 10 of solenoid valve and 11 sensor of pressure sensor are connect with controller 3,
Motor 7 is connect by driving circuit with controller 3.
As shown in figure 4, air stream transmitter 4 includes several air stream launching tubes 14 arranged in parallel, and two neighboring
It is spaced apart between air stream launching tube 14, to adjust the launch angle of air stream；
The air inlet of each air stream launching tube 14 is connect with total air duct 5；
Air inlet one end bottom of air stream transmitter 4 adjusts component by direction and is fixed on train head's top outer table
Face or tailstock top outer surface；
Direction adjustment component includes angular transducer, mechanical diverter and turns to driving motor, and angular transducer is arranged
In on mechanical diverter, the direction adjustment end of mechanical diverter is connect with air stream transmitter 4, and mechanical diverter passes through
Driving motor is turned to connect with controller 3.The environmental signal that controller 3 acquires signal picker 1 is analyzed, and then is determined
Emit air stream and realizes the best angle and direction of noise reduction effect.
Above controller 3 is STC12C5A60S2 series monolithic, it has high speed, low-power consumption and jamproof function,
It is internal containing 10-bit high speed AD conversion unit, therefore does not need to add an analog-digital converter to handle data, while it
Memory space with large capacity compares judgement acquisition data so as to chip.
The chip of the driving motor is L298N chip, has the beneficial effect that L298N principle and H bridge using this chip
Driving circuit is similar, easy for installation, and positive and negative rotation and the electric machine speed regulation of driving motor may be implemented；
Noise transducer is TZ-2KA type noise transducer, and this noise transducer is a wide audio range, high sound intensity
Dynamic range, sensor noise easy to operate；The sensor bulk is small, light-weight, flexible for installation, and measurement of audio frequency range is covered
Whole frequencies (20~20KHz) that human ear can be heard are covered；
Motor and steering driving motor are maxon DCX motor, and the motor speed is steadily and the diameter range of configuration is wide；
The model of pressure sensor is specially FCC-200N pressure sensor, which has small in size, easy to install, survey
The advantages that accuracy of measurement is accurate；
The model of range sensor is specially LP-50F linear type range sensor, which is that a kind of high-precision is conductive
Plastic opaque sensor, high resolution, Enclosure Strength height are suitable for working under high-pressure situations；
The model of angular transducer is specially HAPS21 angular transducer, which is a kind of hollow ultrathin sensing
Device is easily installed, and can be worked under hyperbaric environment.
In one embodiment of the utility model, the mistake that the pneumatic noise reduction of bullet train is carried out by the system is provided
Journey, comprising the following steps:
S1, during train driving, judge train running speed whether reach open noise reduction system threshold speed；
If so, entering step S2；
Otherwise, S4 is entered step；
S2, noise reduction system is opened, the noise signal in compartment and the stream pressure outside compartment is acquired by signal picker
Signal, and it is sent to controller, and enter step S3；
S3, the control signal received is analyzed by controller, judges whether that flow boundary layer air separation situation occurs；
If so, starting noise reduction system and entering step S5；
Otherwise, S4 is entered step；
S4, continue normally travel, and return step S1；
S5, noise air-flow is interfered by controller control air cannon generating device transmitting high-speed air flow, is realized
Pneumatic noise reduction；
The flow direction for realizing pneumatic noise reduction Airflow is illustrated in Fig. 5；
Controller control air cannon generating device transmitting high-speed air flow includes control high-speed air flow in above-mentioned steps S5
Generation with emit and control high-speed air flow the direction of the launch；
Wherein, the method for the generation and transmitting of high-speed air flow is controlled specifically:
A1, the exhaust fan work in the first supercharging equipment is controlled by controller, admits air into cylinder；
A2, when the air in cylinder is full of, controller control motor-driven cylinder piston rod make air compressed action,
The solenoid valve in the first supercharging equipment is opened by controller simultaneously, air stream is made to enter total air conductance along air duct
Pipe, and then high-speed air flow is generated, and launch by air stream transmitter；
A3, the first supercharging equipment emit high-speed air flow while, pass through controller control the second supercharging equipment pumping
Fanman makees to be inflated cylinder；
When the piston rod of the cylinder in the first supercharging equipment, which makees air compressed action, touches cylinder bottom, first is closed
Solenoid valve in supercharging equipment, the piston rod by the cylinder in the first supercharging equipment of motor driven are movable upwards；It controls simultaneously
Second supercharging equipment is generated and transmitted by high-speed air flow；
A4, step A1-A3 is repeated, the first supercharging equipment and the second supercharging equipment alternately and repeatedly work is controlled by controller
Make, realizes the control generated with transmitting high-speed air flow.
In the generation and emission process for stating control high-speed air flow in realization, controller can analyze signal picker upload
Environmental signal, determine the flow velocity size of air stream for needing to generate, and control motor speed, and then control piston rod and do air
Speed when compressed action realizes the speed of control transmitting air stream.
The method for controlling the direction of the launch of high-speed air flow specifically:
B1, noise transducer is analyzed by controller and claps the signal that formula pressure-sensitive piece uploads, analyze train exterior air-flow side
Interlayer separates situation；
B2, situation is separated according to the flow boundary layer air analyzed, controlling steering driving motor by controller makes mechanically
Diverter rotates, and when the target angle direction for the signal arrival controller setting that angular transducer uploads, controls machine
Tool formula diverter stops direction rotation, realizes the control of the high-speed air flow direction of the launch.
The utility model has the following beneficial effects: the pneumatic noise reduction system of bullet train provided by the utility model, is based on air
Jet stream is not changing train shape and material in conjunction with the aerodynamic characteristic in bullet train traveling process to the interference performance in boundary layer
Under the premise of material, by active noise reduction system, improve train pneumatic characteristic, improves the comfort level and energy-saving safe of train.
Claims (5)
1. a kind of pneumatic noise reduction system of bullet train, which is characterized in that including signal picker (1), controller (3) and two skies
Air gun generating device (2)；
The signal picker (1) and air cannon generating device (2) are connect with controller (3)；
Each air cannon generating device (2) includes air stream transmitter (4), total air duct (5), the first supercharging equipment
With the second supercharging equipment, each supercharging equipment is connected by the air inlet of total air duct (5) and air stream transmitter (4)
It connects；
First supercharging equipment and the second supercharging equipment are connect with controller (3).
2. the pneumatic noise reduction system of bullet train according to claim 1, which is characterized in that signal picker (1) packet
It includes several noise transducers and several claps formula pressure-sensitive pieces, each noise transducer and bat formula pressure-sensitive piece are and controller
(3) it connects；The noise transducer is set to inside every section compartment；The bat formula pressure-sensitive piece is set to every section compartment
Top outer surface；
The controller (3) is set in Train Control room；
Two air cannon generating devices (2) are respectively arranged at train head's top outer surface and tailstock top outer table
Face.
3. the pneumatic noise reduction system of bullet train according to claim 2, which is characterized in that
First supercharging equipment and the second supercharging equipment structure are identical, include cylinder (8), exhaust fan (6), motor (7), sky
Airflow duct (12), check valve (15), solenoid valve (13), pressure sensor (11) and two range sensors (10)；
The air inlet of the cylinder (8) is connect with the gas outlet of exhaust fan (6), and the gas outlet of the cylinder (8) passes through air stream
Conduit (12) is connect with total air duct (5)；
The check valve (15) is set on the air inlet of cylinder (8)；
The solenoid valve (13) is set on air duct (12)；
Two range sensors (10) are respectively arranged at the top surface and bottom surface of the piston rod (9) of cylinder (8), the work
It is connect at the top of stopper rod (9) with motor (7)；
It is internal that the pressure sensor (11) is set to cylinder (8)；
The exhaust fan (6), solenoid valve (13), two range sensors (10) and pressure sensor (11) with controller (3)
Connection, the motor (7) are connect by driving circuit with controller (3).
4. the pneumatic noise reduction system of bullet train according to claim 3, which is characterized in that the air stream transmitter (4)
The air stream launching tube (14) equidistantly arranged in parallel including several；
The air inlet of each air stream launching tube (14) is connect with total air duct (5)；
Air inlet one end bottom of the air stream transmitter (4) adjusts component by direction and is fixed on train head's top outer
Surface or tailstock top outer surface；
The direction adjustment component includes angular transducer, mechanical diverter and steering driving motor, the angular transducer
It is set on mechanical diverter, the direction adjustment end of the mechanical diverter is connect with air stream transmitter (4), the machine
Tool formula diverter is connect by turning to driving motor with controller (3).
5. the pneumatic noise reduction system of bullet train according to claim 4, which is characterized in that the controller (3) is
STC12C5A60S2 series monolithic；
The noise transducer is TZ-2KA type noise transducer；
The motor (7) and steering driving motor are maxon DCX motor；
Main control chip model L298N in the driving circuit；
The model of the pressure sensor (11) is specially FCC-200N；
The model of the range sensor (10) is specially LP-50F；
The model of the angular transducer is specially HAPS21.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822225674.8U CN209208757U (en) | 2018-12-27 | 2018-12-27 | A kind of pneumatic noise reduction system of bullet train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822225674.8U CN209208757U (en) | 2018-12-27 | 2018-12-27 | A kind of pneumatic noise reduction system of bullet train |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209208757U true CN209208757U (en) | 2019-08-06 |
Family
ID=67466478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822225674.8U Active CN209208757U (en) | 2018-12-27 | 2018-12-27 | A kind of pneumatic noise reduction system of bullet train |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209208757U (en) |
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2018
- 2018-12-27 CN CN201822225674.8U patent/CN209208757U/en active Active
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