CN107886736A - Speed measurement method, device and vehicle speed measurement system - Google Patents
Speed measurement method, device and vehicle speed measurement system Download PDFInfo
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- CN107886736A CN107886736A CN201610875063.0A CN201610875063A CN107886736A CN 107886736 A CN107886736 A CN 107886736A CN 201610875063 A CN201610875063 A CN 201610875063A CN 107886736 A CN107886736 A CN 107886736A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/052—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed
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Abstract
This disclosure relates to a kind of speed measurement method, device and vehicle speed measurement system, are related to field of measuring technique, this method includes：It is provided with pinger and acoustic receiver on object under test, the line of pinger and acoustic receiver is parallel with the moving direction of object to be measured.When sound wave is tested the speed in preset direction transmitting of the pinger along object to be measured, the launch time for the sound wave that tests the speed is obtained；When acoustic receiver, which receives, tests the speed sound wave, the reception time for the sound wave that tests the speed is obtained；The translational speed of object to be measured is determined according to reception time and the time difference of the launch time, the speed for the sound wave that tests the speed and the distance of the pinger and acoustic receiver.This method can quickly and accurately measure the translational speed of object.
Description
Technical field
This disclosure relates to field of measuring technique, in particular it relates to a kind of speed measurement method, device and vehicle speed measurement system
System.
Background technology
At present, it is on the increase with the recoverable amount of automobile, people are increasingly paid close attention to the various aspects of performance of automobile, especially
The automobile's instant velocity of automobile, turning speed uniform velocity characteristic, and the vehicle speed measurement method used at present is generally to be sensed according to wheel speed
Device gathers vehicle wheel rotational speed, recycles filtering algorithm or the rotating speed of four wheels is handled the methods of mathematical modeling, try to achieve estimating for speed
Evaluation, algorithm are complicated.Simultaneously because vehicle is in the process of moving, accelerates and the cunning such as sliding, idle running, sideslip is often produced when braking
The excessive phenomenon of shifting rate, the longitudinal velocity of wheel and the travel speed of vehicle body may be caused to have larger deviation, cause speed meter
It is low to calculate exactness accurately.
The content of the invention
The purpose of the disclosure is to provide a kind of speed measurement method, device and vehicle speed measurement system, for solving conventional measurement
Fast method calculates the problem of complicated, accuracy in computation is low.
To achieve these goals, according to the first aspect of the embodiment of the present disclosure, there is provided a kind of speed measurement method, treating
Survey on object and be provided with pinger and acoustic receiver, the line and institute of the pinger and the acoustic receiver
State that the moving direction of object to be measured is parallel, and methods described includes：
When sound wave is tested the speed in preset direction transmitting of the pinger along the object to be measured, the survey is obtained
The launch time of fast sound wave；
When the acoustic receiver receive it is described test the speed sound wave when, the reception time for the sound wave that tests the speed described in acquisition；
According to the reception time and the time difference of the launch time, the speed of the sound wave that tests the speed and the sound wave
The distance of transmitter and the acoustic receiver determines the translational speed of the object to be measured.
Optionally, it is described according to the time difference of the reception time and the launch time, the speed of the sound wave that tests the speed
And the distance of the pinger and the acoustic receiver determines the translational speed of the object to be measured, including：
Sum velocity is determined according to the distance of the pinger and the acoustic receiver, and the time difference, institute
State speed of the sum velocity for the object to be measured relative to the sound wave that tests the speed；
The translational speed of the object to be measured is determined according to the speed of the sum velocity and the sound wave that tests the speed.
Optionally, the preset direction is the opposite direction of moving direction, described according to the sum velocity and the sound that tests the speed
The speed of ripple calculates the translational speed of the object to be measured, including：
The sum velocity is subtracted to the speed of the sound wave that tests the speed, obtains the translational speed of the object to be measured.
Optionally, the sound wave that tests the speed is launched according to default transmit cycle, wherein from described when the sound wave is sent out
Axis direction transmitting of the emitter along the object to be measured test the speed sound wave when, launch time of the sound wave that tests the speed described in acquisition to institute
State the time difference according to the reception time and the launch time, and the speed of the sound wave that tests the speed, the acoustic emission
The distance of device and the acoustic receiver determines that the step of translational speed of the object to be measured tests the speed the cycle for one；
After multiple cycles of testing the speed are carried out, the multiple shiftings for the object to be measured that the acquisition the multiple cycle of testing the speed obtains
Dynamic speed；
The translational speed tendency information of the object to be measured is determined according to the multiple translational speed.
According to the second aspect of the embodiment of the present disclosure, there is provided a kind of velocity measuring device, set on object under test sound
The shifting of the line of wave launcher and acoustic receiver, the pinger and the acoustic receiver and the object to be measured
Dynamic direction is parallel, and described device includes：Acquisition module and processing module：
The acquisition module, for being tested the speed when preset direction transmitting of the pinger along the object to be measured
Tested the speed during sound wave, described in acquisition launch time of sound wave；And when the acoustic receiver receive it is described test the speed sound wave when, obtain
Take the reception time of the sound wave that tests the speed；
The processing module, for time difference, the sound wave that tests the speed according to the reception time and the launch time
Speed and the distance of the pinger and the acoustic receiver determine the translational speed of the object to be measured.
Optionally, the processing module includes：Speed measurement module and translational speed measurement module：
The speed measurement module, for the distance according to the pinger and the acoustic receiver, Yi Jisuo
Stating the time difference determines sum velocity, and the sum velocity is speed of the object to be measured relative to the sound wave that tests the speed；
The translational speed measurement module, described in being determined according to the speed of the sum velocity and the sound wave that tests the speed
The translational speed of object to be measured.
Optionally, the preset direction is the opposite direction of moving direction, and the speed measurement module is used for：
The sum velocity is subtracted to the speed of the sound wave that tests the speed, obtains the translational speed of the object to be measured.
Optionally, the sound wave that tests the speed is launched according to default transmit cycle, wherein being performed from the acquisition module
When sound wave is tested the speed in axis direction transmitting of the pinger along the object to be measured, test the speed described in acquisition sound wave
Launch time, when the acoustic receiver receive it is described test the speed sound wave when, the reception time for the sound wave that tests the speed described in acquisition is extremely
The processing module perform according to the reception time and the time difference of the launch time, and the speed of the sound wave that tests the speed
The step of distance of degree, the pinger and the acoustic receiver determines the translational speed of the object to be measured is one
It is individual to test the speed the cycle；
The processing module is also used for, and after multiple cycles of testing the speed are carried out, acquisition is the multiple to test the speed what the cycle obtained
Multiple translational speeds of the object to be measured；The translational speed of the object to be measured is determined according to the multiple translational speed
Tendency information.
According to the third aspect of the embodiment of the present disclosure, there is provided a kind of vehicle speed measurement system, applied to vehicle, the system bag
Include：The pinger and acoustic receiver and controller set on the vehicle, the pinger and the sound
The line of ripple receiver is parallel with the moving direction of the vehicle, and the controller provides for the second aspect of the embodiment of the present disclosure
Any one velocity measuring device.
Optionally, for the sound wave that tests the speed for the impartial sound wave of frequency, the frequency of the sound wave that tests the speed is less than 20HZ or big
In 20000Hz；The sonic generator and the acoustic receiver are arranged in confined space.
Pass through above-mentioned technical proposal, the calculating that the disclosure can avoid bringing using wheel speed calculation speed in the prior art are answered
It the problem of miscellaneous, can also avoid due to the error that wheel speed is brought in braking procedure, therefore can reduce when calculating translational speed
Complexity, and improve accuracy in computation.
Other feature and advantage of the disclosure will be described in detail in subsequent specific embodiment part, it should be understood that
, the general description and following detailed description of the above are only exemplary and explanatory, can not limit the disclosure.
Brief description of the drawings
Accompanying drawing is for providing further understanding of the disclosure, and a part for constitution instruction, with following tool
Body embodiment is used to explain the disclosure together, but does not form the limitation to the disclosure.In the accompanying drawings：
Fig. 1 is a kind of flow chart of speed measurement method shown in an exemplary embodiment；
Fig. 2 is a kind of flow chart of the translational speed method of determination object to be measured according to embodiment illustrated in fig. 1；
Fig. 3 is a kind of block diagram of velocity measuring device according to an exemplary embodiment；
Fig. 4 is a kind of block diagram of processing module according to embodiment illustrated in fig. 3；
Fig. 5 is a kind of schematic diagram of vehicle speed measurement system according to an exemplary embodiment.
Embodiment
The embodiment of the disclosure is described in detail below in conjunction with accompanying drawing, its example is illustrated in the accompanying drawings.Under
When the description in face is related to accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Below
Embodiment described in exemplary embodiment does not represent all embodiments consistent with the disclosure.On the contrary, they
Only it is the example of the apparatus and method consistent with some aspects being described in detail in such as appended claims, the disclosure.
It is each to the disclosure first before speed measurement method, device and the vehicle speed measurement system explanation provided the disclosure
Application scenarios involved by individual embodiment are introduced.The application scenarios include an object under test, are provided with the object under test
The line of pinger and acoustic receiver, pinger and acoustic receiver is parallel with the moving direction of the object.Should
Object under test can be any one moveable object, such as the equipment such as bicycle, automobile, train, steamer.
Fig. 1 is a kind of flow chart of speed measurement method according to an exemplary embodiment, is set on object under test
It is equipped with pinger and acoustic receiver, the moving direction of the line and object to be measured of pinger and acoustic receiver
It is parallel, as shown in figure 1, this method includes：
Step 101, when sound wave is tested the speed in preset direction transmitting of the pinger along object to be measured, the sound that tests the speed is obtained
The launch time of ripple.
Step 102, when acoustic receiver, which receives, tests the speed sound wave, the reception time for the sound wave that tests the speed is obtained.
Step 103, according to receive time and the time difference of launch time, the speed for the sound wave that tests the speed and pinger and
The distance of acoustic receiver determines the translational speed of object to be measured.
Fig. 2 is the flow chart of another speed measurement method according to an exemplary embodiment, as shown in Fig. 2 step
Rapid 103 can include：
Step 1031, according to the distance of pinger and acoustic receiver, and the time difference determines sum velocity, the conjunction
Speed is speed of the object to be measured relative to the sound wave that tests the speed.
Step 1032, the translational speed of object to be measured is determined according to the speed of sum velocity and the sound wave that tests the speed.
Optionally, when the preset direction is the opposite direction of moving direction, step 1032 can include：
Sum velocity is subtracted to the speed for the sound wave that tests the speed, obtains the translational speed of object to be measured.
Optionally, the sound wave that tests the speed can be launched according to default transmit cycle, wherein from step 101 to step
103, which are one, tests the speed the cycle.
After multiple cycles of testing the speed are carried out, the multiple mobile speed for the object to be measured that the acquisition the plurality of cycle of testing the speed obtains
Degree, so as to determine the translational speed tendency information of the object to be measured according to the plurality of translational speed, the translational speed becomes
Gesture information can be the translational speed curve of the object to be measured.
Example, when object under test is vehicle, pinger and acoustic receiver are set on the vehicle body of vehicle, its
The line of middle pinger and acoustic receiver and the travel direction keeping parallelism of vehicle, can be by magnet, gluing, card
Pinger and acoustic receiver are fixed on top, in-car or the underbody of vehicle by the conventional connected mode such as groove or bolt,
Pinger and acoustic receiver can also be fixed in an obturator (antivacuum), then the obturator is set
On vehicle, the implementation of the obturator, it is possible to reduce the interference of outside noise, improve the precision of measurement.Wherein, sound wave
The distance between transmitter and acoustic receiver be it is fixed, can also be by the distance between pinger and acoustic receiver
It is arranged to adjustable.In addition, the frequency for the sound wave that tests the speed that sonic generator is sent can be ultrasonic wave, i.e., frequency 20~
Sound wave outside 20000Hz scopes, the people on such vehicle would not hear the sound wave that tests the speed, and avoid to artificial into bothering.
When vehicle in the process of moving, preset direction of the pinger along object to be measured positioned at one end, such as
The opposite direction of the moving direction of object to be measured launches the sound wave that tests the speed, and obtains the launch time t for the sound wave that tests the speedHair.Test the speed sound wave with
VSoundPropagate in atmosphere, the distance S (distance of pinger and acoustic receiver) fixed by one end, other end sound wave connects
Receive device to receive when testing the speed sound wave, obtain the reception time t for the sound wave that tests the speedReceive.According to pinger and acoustic receiver away from
From S, and receive time tReceiveWith launch time tHairTime difference T determine sum velocity VClose, sum velocity VCloseIt is vehicle relative to testing the speed
The speed of sound wave.According to sum velocity VCloseWith the speed V for the sound wave that tests the speedSoundDetermine the travel speed V of vehicleCar。
When vehicle heading is opposite with the direction of the launch for the sound wave that tests the speed, by sum velocity VClose=VCar+VSoundSubtract the sound that tests the speed
The speed V of rippleSound, the as travel speed V of vehicleCar, as shown in formula 1-1：
VCar=S/T-VSound 1-1
In order to preferably study the motion state of vehicle in the process of moving, the sound wave that tests the speed can be according to default
Transmit cycle is launched.Tested the speed the cycle (i.e. required for completion step 101 to step 103 from step 101 to step 103 for one
Time), after sound wave is tested the speed in transmitting every time, test the speed the cycle with regard to carrying out one, after multiple cycles of testing the speed are carried out, can obtain multiple
Tested the speed multiple translational speeds of vehicle that the cycle obtains, and the translational speed of vehicle is can determine according to multiple translational speeds of acquisition
Tendency information.Default transmit cycle is smaller, and under identical acquisition time, the translational speed of acquisition is more, the movement of vehicle
Acceleration tendency information is more accurate.The translational speed tendency information of vehicle can be real-time translational speed curve or average speed
Curve etc., wherein average speed curve are the statistical informations to the average speed in fixed time period, for example, when test the speed sound wave with
10ms transmit cycle transmitting, it is fixed time period to take 1s, and after a period of time, vehicle is obtained according to the average speed in multiple 1s
Average speed curve.
In summary, the calculating complexity that the disclosure can avoid bringing using wheel speed calculation speed in the prior art is asked
Topic, can also be avoided due to the error that wheel speed is brought in braking procedure, therefore can reduce complexity when calculating translational speed,
And improve accuracy in computation.
Fig. 3 is a kind of block diagram of velocity measuring device according to an exemplary embodiment, is set on object under test
There is a pinger harmony ripple receiver, the moving direction of the line and object to be measured of pinger and acoustic receiver is put down
OK, as shown in figure 3, the device includes：Acquisition module 301 and processing module 302：
Acquisition module 301, for when sound wave is tested the speed in preset direction transmitting of the pinger along object to be measured, obtaining
Take the launch time for the sound wave that tests the speed；And when acoustic receiver receives and tests the speed sound wave, obtain the reception time for the sound wave that tests the speed.
Processing module 302, for the time difference according to reception time and launch time, the speed and sound wave of the sound wave that tests the speed
The distance of transmitter and acoustic receiver determines the translational speed of object to be measured.
Optionally, Fig. 4 is a kind of block diagram of processing module according to embodiment illustrated in fig. 3, as shown in figure 4, processing
Module 302 can include：Speed measurement module 3021 and translational speed measurement module 3022：
Speed measurement module 3021, determined for the distance according to pinger and acoustic receiver, and time difference
Sum velocity, the sum velocity are speed of the object to be measured relative to the sound wave that tests the speed.
Translational speed measurement module 3022, for determining object to be measured according to the speed of sum velocity and the sound wave that tests the speed
Translational speed.
Optionally, when preset direction is the opposite direction of moving direction, translational speed measurement module 3022 is used for：
The sum velocity is subtracted to the speed of the sound wave that tests the speed, obtains the translational speed of object to be measured.
Optionally, the sound wave that tests the speed is launched according to default transmit cycle, wherein working as sound from what acquisition module 301 performed
Axis direction transmitting of the wave launcher along object to be measured test the speed sound wave when, obtain the launch time of sound wave of testing the speed, work as sound wave
Receiver receives when testing the speed sound wave, obtain that receptions time to the processing module 302 of the sound wave that tests the speed performs according to the reception time
Determined with the distance of the time difference of launch time, and the speed for the sound wave that tests the speed, pinger and acoustic receiver to be measured
The step of translational speed of object, is one and tests the speed the cycle.
Processing module 302 is additionally operable to, and after multiple cycles of testing the speed are carried out, the acquisition the plurality of cycle of testing the speed obtains to be measured
Multiple translational speeds of object；The translational speed tendency information of object to be measured is determined according to the plurality of translational speed.
Example, when object under test is vehicle, the set-up mode of pinger and acoustic receiver on vehicle is
Describe in the above-described embodiments clear, here is omitted.Vehicle in the process of moving, positioned at one end pinger along
The preset direction of object to be measured, it is that the opposite direction transmitting of the moving direction of object to be measured is tested the speed sound wave in the present embodiment, obtains
Modulus block 301 obtains the launch time t for the sound wave that tests the speedHair.Sound wave test the speed with VSoundPropagate in atmosphere, the distance fixed by one end
S (distance of pinger and acoustic receiver), other end acoustic receiver receives when testing the speed sound wave, acquisition module 301
Obtain the reception time t for the sound wave that tests the speedReceive.Speed measurement module 3021 in processing module 302 is according to pinger and sound wave
The distance S of receiver, and receive time tReceiveWith launch time tHairTime difference T determine sum velocity VClose, sum velocity VCloseFor vehicle
Relative to the speed for the sound wave that tests the speed.Translational speed measurement module 3022 in processing module 302 is according to sum velocity VCloseWith the sound that tests the speed
The speed V of rippleSoundDetermine the travel speed V of vehicleCar。VCarSpecific calculation procedure and formula are given in embodiment before
Go out, be not repeated to illustrate herein.
Likewise, when the sound wave that tests the speed can be launched according to default transmit cycle, obtain and test the speed from acquisition module 301
The launch time and reception time of sound wave, hold 302 determination Vehicle Speeds to processing module and tested the speed the cycle for one, carried out
After multiple cycles of testing the speed, the multiple translational speeds for the vehicle that multiple cycles of testing the speed obtain can be obtained.According to multiple shiftings of acquisition
Dynamic speed can determine the translational speed tendency information of vehicle.
In summary, the calculating complexity that the disclosure can avoid bringing using wheel speed calculation speed in the prior art is asked
Topic, can also be avoided due to the error that wheel speed is brought in braking procedure, therefore can reduce complexity when calculating translational speed,
And improve accuracy in computation.
Fig. 5 is a kind of schematic diagram of vehicle speed measurement system according to an exemplary embodiment, applied to vehicle 500,
As shown in figure 5, the system includes：
The pinger 5011,5012 and acoustic receiver 5021,5022 and controller set on vehicle 500
503, the line of pinger 5011,5012 and acoustic receiver 5011,5012 is parallel with the moving direction of vehicle 500, its
In, pinger 5011 and acoustic receiver 5021 are one group, and pinger 5012 and acoustic receiver 5022 are one group,
It is respectively used to detect translational speed when forward travel and reversing, controller 503 includes any one in above-described embodiment
Velocity measuring device.
Optionally, the sound wave that tests the speed is the impartial sound wave of frequency, and the frequency for the sound wave that tests the speed is arrived outside 20000Hz scopes for 20,
Sonic generator 5011,5012 and acoustic receiver 5021,5022 can be arranged in confined space.
Example, the vehicle body of vehicle 500 set pinger 5011,5012 and acoustic receiver 5021,5022 and
The line of controller 503, pinger 5011 and acoustic receiver 5021, pinger 5012 and acoustic receiver 5022
Travel direction keeping parallelism of the line with vehicle, pinger 5011 and acoustic receiver 5021 be fixed on one it is closed
In device (antivacuum) A, pinger 5012 and acoustic receiver 5022 are fixed in obturator (antivacuum) B,
In two obturators A, B, the set location of pinger and acoustic receiver is on the contrary, i.e. when vehicle heading is forward
During traveling, vehicle translational speed is measured using obturator A.When vehicle heading is travels (reversing) backward, use
Obturator B measures vehicle translational speed.The obturator A, B can be arranged on the bottom of vehicle 500 by way of neck,
The frequency for the sound wave that tests the speed that sonic generator 5011,5012 is sent can be 10Hz.Processor 503 can be the control of vehicle
Assembly, it can also can also be used as an individually dress as a part for the control assembly of vehicle, such as ECU, information station etc.
Put and be arranged on vehicle.When vehicle 500 in the process of moving, the pinger 5011 (or 5012) positioned at one end is along to be measured
The preset direction of fast object launches the sound wave that tests the speed, and processor 503 obtains the launch time t for the sound wave that tests the speedHair.Sound wave test the speed with VSound
Propagated in air, the distance S (distance of pinger and acoustic receiver) fixed by one end, other end acoustic receiver
5021 (5022) receive when testing the speed sound wave, and processor 503 obtains the reception time t for the sound wave that tests the speedReceive.Processor 503 is according to sound
The distance S of wave launcher and acoustic receiver, and receive time tReceiveWith launch time tHairTime difference T determine sum velocity VClose,
Sum velocity VCloseSpeed for vehicle relative to the sound wave that tests the speed.According to sum velocity VCloseWith the speed V for the sound wave that tests the speedSoundDetermine vehicle
Travel speed VCar。VCarSpecific measuring process provides in embodiment before, and here is omitted.
In summary, the calculating complexity that the disclosure can avoid bringing using wheel speed calculation speed in the prior art is asked
Topic, can also be avoided due to the error that wheel speed is brought in braking procedure, therefore can reduce complexity when calculating translational speed,
And improve accuracy in computation., simultaneously as sonic generator and acoustic receiver are all fixed in confined space, and frequency of sound wave
Outside the frequency range of people's sub-audible sound, external sound will not be it also avoid to the sound wave that tests the speed to artificial into bothering on car
Interference, so as to further improve the accuracy rate of measurement.
Those skilled in the art will readily occur to other embodiment party of the disclosure after considering specification and putting into practice the disclosure
Case.The application is intended to any modification, purposes or the adaptations of the disclosure, these modifications, purposes or adaptability
Change follows the general principle of the disclosure and including the undocumented common knowledge in the art of the disclosure or usual skill
Art means.Description and embodiments are considered only as exemplary, and the true scope of the disclosure and spirit are pointed out by claim.
It should be appreciated that the precision architecture that the disclosure is not limited to be described above and is shown in the drawings, and
And various modifications and changes can be being carried out without departing from the scope, it can also enter between a variety of embodiments of the disclosure
Row any combination, as long as it without prejudice to the thought of the disclosure, it should equally be considered as disclosure disclosure of that.The disclosure
Scope is only limited by appended claim.
Claims (10)
1. a kind of speed measurement method, it is characterised in that pinger and acoustic receiver are provided with object under test, institute
It is parallel with the moving direction of the object to be measured to state the line of pinger and the acoustic receiver, methods described bag
Include：
When sound wave is tested the speed in preset direction transmitting of the pinger along the object to be measured, test the speed sound described in acquisition
The launch time of ripple；
When the acoustic receiver receive it is described test the speed sound wave when, the reception time for the sound wave that tests the speed described in acquisition；
According to the reception time and the time difference of the launch time, the speed of the sound wave that tests the speed and the acoustic emission
The distance of device and the acoustic receiver determines the translational speed of the object to be measured.
2. according to the method for claim 1, it is characterised in that described according to the reception time and launch time
Time difference, and treated described in the distance determination of the speed of the sound wave that tests the speed, the pinger and the acoustic receiver
Test the speed the translational speed of object, including：
Sum velocity, the conjunction are determined according to the distance of the pinger and the acoustic receiver, and the time difference
Speed is speed of the object to be measured relative to the sound wave that tests the speed；
The translational speed of the object to be measured is determined according to the speed of the sum velocity and the sound wave that tests the speed.
3. according to the method for claim 2, it is characterised in that the preset direction is the opposite direction of moving direction, described
The translational speed of the object to be measured is calculated according to the speed of the sum velocity and the sound wave that tests the speed, including：
The sum velocity is subtracted to the speed of the sound wave that tests the speed, obtains the translational speed of the object to be measured.
4. according to the method for claim 3, it is characterised in that the sound wave that tests the speed is launched according to default transmit cycle
, wherein being obtained from described when sound wave is tested the speed in axis direction transmitting of the pinger along the object to be measured
The launch time of the sound wave that tests the speed is to described according to the reception time and the time difference of the launch time, and the survey
The distance of the speed of fast sound wave, the pinger and the acoustic receiver determines the translational speed of the object to be measured
The step of test the speed the cycle for one；
After multiple cycles of testing the speed are carried out, the multiple mobile speed for the object to be measured that the acquisition the multiple cycle of testing the speed obtains
Degree；
The translational speed tendency information of the object to be measured is determined according to the multiple translational speed.
5. a kind of velocity measuring device, it is characterised in that pinger and acoustic receiver are provided with object under test, institute
It is parallel with the moving direction of the object to be measured to state the line of pinger and the acoustic receiver, described device bag
Include：Acquisition module and processing module；
The acquisition module, for launching the sound wave that tests the speed when preset direction of the pinger along the object to be measured
When, the launch time for the sound wave that tests the speed described in acquisition；And when the acoustic receiver receive it is described test the speed sound wave when, obtain institute
State the reception time for the sound wave that tests the speed；
The processing module, for the time difference according to the reception time and the launch time, the speed of the sound wave that tests the speed
Degree and the distance of the pinger and the acoustic receiver determine the translational speed of the object to be measured.
6. device according to claim 5, it is characterised in that the processing module includes：Speed measurement module and movement
Speed measurement module；
The speed measurement module, for the distance according to the pinger and the acoustic receiver, and it is described when
Between difference determine sum velocity, the sum velocity be the object to be measured relative to the sound wave that tests the speed speed；
The translational speed measurement module, it is described to be measured for being determined according to the speed of the sum velocity and the sound wave that tests the speed
The translational speed of fast object.
7. device according to claim 6, it is characterised in that the preset direction is the opposite direction of moving direction, described
Speed measurement module is used for：
The sum velocity is subtracted to the speed of the sound wave that tests the speed, obtains the translational speed of the object to be measured.
8. device according to claim 7, it is characterised in that the sound wave that tests the speed is launched according to default transmit cycle
, wherein axis direction of the pinger along the object to be measured of working as performed from the acquisition module launches survey
Tested the speed during fast sound wave, described in acquisition launch time of sound wave, when the acoustic receiver receive it is described test the speed sound wave when, obtain
Reception time to the processing module of the sound wave that tests the speed perform according to it is described reception the time and the launch time when
Between it is poor, and the speed of the sound wave that tests the speed, the pinger and the acoustic receiver distance determine it is described to be measured
The step of translational speed of fast object, is one and tests the speed the cycle；
The processing module is also used for, and after multiple cycles of testing the speed are carried out, the acquisition the multiple cycle of testing the speed obtains described
Multiple translational speeds of object to be measured；The translational speed trend of the object to be measured is determined according to the multiple translational speed
Information.
9. a kind of vehicle speed measurement system, it is characterised in that applied to vehicle, the system includes：Set on the vehicle
The line of pinger and acoustic receiver and controller, the pinger and the acoustic receiver and the car
Moving direction it is parallel, the controller includes the velocity measuring device described in any one in claim 5-8.
10. system according to claim 9, it is characterised in that the sound wave that tests the speed is the impartial sound wave of frequency, the survey
The frequency of fast sound wave is less than 20HZ or more than 20000Hz；The sonic generator and the acoustic receiver are arranged on closed
In space.
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| CN201610875063.0A CN107886736A (en) | 2016-09-30 | 2016-09-30 | Speed measurement method, device and vehicle speed measurement system |
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| CN201610875063.0A CN107886736A (en) | 2016-09-30 | 2016-09-30 | Speed measurement method, device and vehicle speed measurement system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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