CN100485732C - Date collecting method for measuring automobile external noise - Google Patents
Date collecting method for measuring automobile external noise Download PDFInfo
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- CN100485732C CN100485732C CNB2006100246558A CN200610024655A CN100485732C CN 100485732 C CN100485732 C CN 100485732C CN B2006100246558 A CNB2006100246558 A CN B2006100246558A CN 200610024655 A CN200610024655 A CN 200610024655A CN 100485732 C CN100485732 C CN 100485732C
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Abstract
A data collection method during measuring noise outside an automobile, compries: driving the automobile on a driveway between a predetermined starting part line and a measuring terminal line to perform measure; providing an automobile wireless controller local area network transceiver on the automobile and providing a ground wireless controller local area network transceiver on the ground to compose a wireless controller local area network transceiver bridge which connects a controller local area network bus in the automobile with a data collection system on the groud; the data collection system synchronizing a noise signal outside the automobile during driving the automobile and a signal reflecting a state of the automobile on the controller local area network bus of the automobile; analysing a relationship between the noise outside the automobile during driving and a travelling state of the automobile. The invention can collect and measure automobile travel data such as rotate speed of an engine, opening degree of a gas saving door, level of an automatic gearbox and the like without mounting a sensor, thereby increasing measuring efficiency.
Description
Technical field
Collecting method when the present invention is a kind of measured automobiles pass-by noise is used to study the relation between Outer Automotive Noise and the motoring condition.Refer in particular to by wireless controller LAN (Local Area Network) (CAN:Controller Area NetWork, hereinafter to be referred as CAN) technology is the data acquisition system (DAS) of data transmission such as the speed of a motor vehicle of automobile, engine speed, air throttle of car aperture to ground, travel the outward method of noise of a kind of measured automobiles car that data acquisition system (DAS) writes down data such as the microphone signal on ground and the speed of a motor vehicle on the running automobile, engine speed, throttle opening, automobile position simultaneously.
Background technology
According to " automobile give it the gun pass-by noise limit value and measuring method " (GB1495-2002) and " acoustics-road vehicle acceleration noise measurement-engineering method " ISO 362, when outside the automobile car, travelling noise measurement, arrange Outer Automotive Noise level when microphone, measured automobiles quicken by measurement zone in the both sides, track.When the generation reason of research automobile noise, the noise intensity when not only wanting measured automobiles to travel sometimes also will be studied the relation of automobile speed, engine speed, automobile position etc. and pass-by noise.Because automobile is kept in motion when pass-by noise is measured, and microphone be placed in ground, the general measure system can't be in the microphone signal of gathering ground the collection speed of a motor vehicle and engine speed.
At present, the method for head it off mainly contains with radar velocity measurement technology and WLAN (LAN (Local Area Network)) technology.Wireless lan technology needs the sensor and the amplifier of the speed of a motor vehicle and engine speed, by the WLAN transmitter and receiver signals such as the speed of a motor vehicle, engine speed and throttle position is sent to the testing tool on ground then.Its shortcoming is to need sensor installation and amplifier, and the real-time of lan technology is relatively poor, can influence the synchronism of measurement data.The radar velocity measurement technology be on ground with the speed of a motor vehicle and the position of radargrammetry automobile, the speed of a motor vehicle that it can measured automobiles and the position of definite automobile, but can't measure parameter such as engine speed.Therefore also need other sensor and amplifier are installed, and signal is passed to surveying instrument with wireless transmission method.Their shortcoming is to need more sensor, and the preliminary work before measuring is more.
Controller local area network CAN (Controller Area NetWork) is a kind of fieldbus, is widely used in the control system of automobile.CAN is designed to the microcontroller communication in the automotive environment, and exchange message between vehicle-mounted each electronic-controlled installation forms the Vehicle Electronic Control network.Such as: in the systems such as engine management system, gearbox control, instrument equipment, all embed the CAN control device.On automobile CAN-bus, abundant vehicle condition information is arranged, as the speed of a motor vehicle, engine operating parameter, wheel box information etc.
CAN is how main working method, and communication mode is flexible, need not nodal informations such as station address, adopts non-destructive bus arbitration technology, satisfies real-time requirement.In addition, CAN adopts short frame structure transmission signals, and the transmission time is short, has stronger antijamming capability.CAN can allow that the CAN controller that adds directly inserts on the CAN.
Wireless CAN is connected to the CAN parts in the CAN system by the CAN bridge.
The technology of wireless controller LAN (Local Area Network) does not also appear utilizing at present, in Noise Generated by Running Vehicles is measured.
Summary of the invention
The objective of the invention is to adopt radar velocity measurement technology and the existing problem of WLAN (LAN (Local Area Network)) technology in the noise in order to solve to measure in the above-mentioned prior art, collecting method when a kind of employing wireless controller local area network technology (wireless CAN bridge) measured automobiles pass-by noise is provided, with the vehicle operating parameter on the vehicle that travels, as the speed of a motor vehicle, engine speed, throttle opening, data such as automatic gear-box gear are sent to ground, record simultaneously on the data acquisition system (DAS) with the voice signal of the microphone collection on ground, research and analyse the relation between the vehicle ' noise motoring condition.
According to above-mentioned " automobile give it the gun pass-by noise limit value and measuring method " (GB 1495-2002) and " acoustics-road vehicle acceleration noise measurement-engineering method " ISO 362, measure car and quicken running noise outward, the outer maximum noise intensity of car in need being determined between measurement zone, and monitor vehicle speed, engine speed, throttle opening, the test condition whether vehicle conditions such as wheel box gear are up to specification, that is to say only needs to have the sound meter that maximal value keeps, and whether the speed of a motor vehicle and the engine speed of observation vehicle between the test section be up to specification, do not need to use data acquisition system (DAS) usually.But during the reason that the noise that travels produces, need the relevant noise and the speed of a motor vehicle outside researching and analysing car, the relation between noise and the engine speed etc., and whether gear shift of automatic gear-box, gear shift when, the noise variation after the gear shift etc.The present invention adopts the signal of the microphone on wireless CAN technical transmission vehicle operation data and ground to note with data acquisition system (DAS) simultaneously, be the travel a kind of data transmission and the acquisition method of pass-by noise of measured automobiles, be used for researching and analysing the reason that noise produces.The present invention not only can be used for the give it the gun measurement of pass-by noise of automobile, also can be used for the travel measurement Research of noise of car under other speed change, constant speed, the deceleration situation outward.
The object of the present invention is achieved like this: the collecting method during a kind of measured automobiles pass-by noise comprises:
Automobile travels on the track, and described automotive front end arrives when measuring the top line, measures beginning, when vehicle tail end passes through the measuring terminals line, measures and finishes;
Described automobile is provided with automobile wireless controller local area network transceiver, on the ground of test site, be provided with terrestrial wireless controller local area network transceiver, form a wireless controller local network net bridge, described automobile in measurement begin to measure to finish travel during in, described wireless controller local network net bridge links to each other the Controller Area Network BUS in the described automobile with the data acquisition system (DAS) of ground tape controller LAN module is wireless;
The signal of the reflection vehicle condition on the Controller Area Network BUS of noise signal when described running car that ground microphone records and described automobile be located in the data collection system synchronizing of described tape controller LAN module record;
Pass-by noise when the pass-by noise the during running car that records according to described data acquisition system (DAS) and the signal of reflection motoring condition are just analyzed running car and the relation between the motoring condition.
Effect of the present invention:
Collecting method during measured automobiles pass-by noise of the present invention is with the data on the CAN bus of wireless CAN technology transfer automobile, convenient and simple, do not need sensor installation just can gather automobilism data such as measuring engine speed, throttle opening, fluid drive gear box, improved efficiency of measurement.In addition,, therefore can obtain more information on automobile CAN-bus, can analyze in more detail measurement result than traditional method because a large amount of automobilism information is arranged.
In addition, use technical costs of the present invention low, general noise measuring equipment is transformed into the specialized equipment that can carry out the outer form noise measurement of car, and makes original equipment still carry out other noise measurements.Thereby reduce user's equipment investment greatly and improve usage ratio of equipment.
For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.
Description of drawings
Fig. 1, carry out the travel synoptic diagram of measuring method of noise of automobile car outward with wireless CAN technology;
The synoptic diagram that vehicle speedometer is connected with automobile CAN-bus and wireless CAN transceiver among Fig. 2, the present invention.
The symbol of critical piece in the accompanying drawing:
1. measure top line 2. measuring terminals lines
3. automobile wireless CAN transceiver 4. terrestrial wireless CAN transceivers
5. be with the data acquisition system (DAS) 6. left side microphones of CAN module
7. right side microphone 8. photoelectricity trigger switches.
9. vehicle speedometer 10.CAN gateway
11. automobile CAN-bus 100. automobiles
Embodiment
The embodiment of the collecting method below in conjunction with accompanying drawing during to measured automobiles pass-by noise of the present invention is elaborated.
Referring to Fig. 1, Fig. 2, Fig. 1 is for carrying out the travel synoptic diagram of measuring method of noise of automobile car outward with wireless CAN technology; The synoptic diagram that Fig. 2 is connected with automobile CAN-bus and wireless CAN transceiver for vehicle speedometer among the present invention.
An automobile wireless controller local area network transceiver (hereinafter to be referred as automobile wireless CAN transceiver) 3 is set on automobile 100, a terrestrial wireless controller local area network transceiver (hereinafter to be referred as terrestrial wireless CAN transceiver) 4 is set on the ground of test site, automobile wireless CAN transceiver 3 forms a pair of bridge with terrestrial wireless CAN transceiver 4, this bridge is connected with the CAN of the data acquisition system (DAS) on ground (CAN converter) module the CAN of automobile by wireless mode, the instrument that its effect is equivalent to directly will to have CAN module (CAN converter) is wired on the CAN bus of automobile.Like this, just can be directly gather information on the CAN bus of automobiles 100 with the data acquisition system (DAS) 5 of the band CAN module on ground.
Specific implementation method:
As shown in Figure 1, 2, automobile 100 travels with the velocity-stabilization of stipulating on the track, and automobile 100 front ends arrive when measuring top line 1, measure beginning, when automobile 100 tail ends pass through measuring terminals line 2, unclamp throttle control, measure and finish.Noise Generated by Running Vehicles is exactly that the front end of automobile 100 advances to measure top line 1 to automobile 100 tail ends and goes out noise intensity between the measuring terminals line 2.In Fig. 1, the automobile wireless CAN transceiver 3 and the terrestrial wireless CAN transceiver 4 that are located on the automobile 100 are formed a wireless CAN bridge, with the CAN bus and ground data acquisition system (DAS) 5 wireless connections of being with the CAN module of automobile 100.Data acquisition system (DAS) 5 synchronous recordings of band CAN module be located at ground left side microphone 6 and right side microphone 7 automobile 100 in measurement begins during measure travelling of finishing noise signal and the speed of a motor vehicle, engine speed, air throttle of car aperture and the automobile 100 on the CAN bus of described automobile 100 arrive the data such as trigger pip of measuring top lines 1 and passing through measuring terminals line 2.Automobile 100 front ends are equipped with photoelectricity trigger switch 8, and when automobile 100 front ends arrived measurement top line 1, when this photoelectricity trigger switch 8 detected the triggering white line of measuring top line 1, photoelectricity trigger switch 8 sent trigger pulse, and beginning is measured in prompting; When the tail end of automobile 100 passes through measuring terminals line 2, can determine automobile 100 and the distance of measuring top line 1 by the distance signal that places the vehicle speedometer 9 in the automobile 100, thereby determine the moment that measurement finishes.
In Fig. 2, place the vehicle speedometer 9 in the automobile 100 to measure the speed of a motor vehicle and distance, have the digital signal input, and the speed of a motor vehicle, distance, automobile position and the preceding photoelectricity trigger switch 8 trigger pips CAN bus from vehicle speedometer 9 is connected with the CAN bus 11 of automobile 100 by CAN gateway 10, and CAN gateway 10 is gone out data such as the speed of a motor vehicle, distance, engine speed, throttle opening by the radio wave transmission of automobile wireless CAN transceiver 3.The effect of CAN gateway 10 is to coordinate vehicle CAN agreement and instrument CAN agreement.
In Fig. 2, vehicle speedometer 9 can be the vehicle speedometer of fifth wheel instrument, photoelectricity vehicle speedometer, radar vehicle speedometer, GPS vehicle speedometer or other type, also can be the vehicle speed signal instrument of vehicle itself.
In Fig. 1, data acquisition system (DAS) 5 itself has the CAN module, if data acquisition system (DAS) does not have the CAN module, can reach identical effect equally as long as increase an external CAN module.
In Fig. 2, vehicle speedometer 9 itself has CAN output, if but vehicle speedometer is not with CAN output, can reach identical effect equally as long as increase an external CAN module.When vehicle CAN agreement and instrument CAN protocol-compliant, also can omit CAN gateway 10.
Automobilism data such as the speed of the automobile that automobile wireless CAN transceiver 3 sends, distance, engine speed, throttle position, record simultaneously on the data acquisition system (DAS) 5 on ground with the left side microphone 6 on ground and the signal of right side microphone 7, by the data of data acquisition system (DAS) 5 records, can research and analyse the pass-by noise of running car and the relation between the motoring condition more all sidedly.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the modification of the above embodiment.
Claims (10)
1, the collecting method during a kind of measured automobiles pass-by noise is characterized in that comprising:
Automobile travels on the track, and described automotive front end arrives when measuring the top line, measures beginning, when vehicle tail end passes through the measuring terminals line, measures and finishes;
Described automobile is provided with automobile wireless controller local area network transceiver, on the ground of test site, be provided with terrestrial wireless controller local area network transceiver, form a wireless controller local network net bridge, described automobile in measurement begin to measure to finish travel during in, described wireless controller local network net bridge links to each other the Controller Area Network BUS in the described automobile with the data acquisition system (DAS) of ground tape controller LAN module is wireless;
The signal of the reflection vehicle condition on the Controller Area Network BUS of noise signal when described running car that ground microphone records and described automobile be located in the data collection system synchronizing of described tape controller LAN module record;
Pass-by noise when the pass-by noise the during running car that records according to described data acquisition system (DAS) and the signal of reflection motoring condition are just analyzed running car and the relation between the motoring condition.
2, the collecting method during measured automobiles pass-by noise as claimed in claim 1 is characterized in that:
The signal of the reflection vehicle condition on the Controller Area Network BUS in the described automobile comprises: the speed of a motor vehicle of automobile, engine speed, air throttle of car aperture, wheel box gear and automobile arrive measures the signal that the top line is measured beginning.
3, the collecting method during measured automobiles pass-by noise as claimed in claim 1 or 2 is characterized in that:
Be provided with the controller local area network gateway between the Controller Area Network BUS of described automobile, the Controller Area Network BUS of vehicle speedometer.
4, the collecting method during measured automobiles pass-by noise as claimed in claim 1 or 2 is characterized in that:
It is to measure commencing signal and be as the criterion to be sent when detecting the triggering white line of described measurement top line by the photoelectricity trigger switch that places described automotive front end that described measurement begins, and this is measured the interior Controller Area Network BUS of commencing signal and described automobile and is connected.
5, the collecting method during measured automobiles pass-by noise as claimed in claim 2 is characterized in that:
The signal of the speed of a motor vehicle of described automobile can be the vehicle speed signal of vehicle speedometer, also can be the vehicle speed signal on the Controller Area Network BUS of described automobile.
6, the collecting method during measured automobiles pass-by noise as claimed in claim 3 is characterized in that:
Described controller local area network gateway is to coordinate the controller local area network agreement of described automobile and the controller local area network agreement of described vehicle speedometer.
7, the collecting method during measured automobiles pass-by noise as claimed in claim 6 is characterized in that:
When the controller local area network protocol-compliant of the controller local area network agreement of described automobile and vehicle speedometer, omit described controller local area network gateway.
8, the collecting method during measured automobiles pass-by noise as claimed in claim 5 is characterized in that:
Described vehicle speedometer is fifth wheel instrument or photoelectricity vehicle speedometer or radar vehicle speedometer or GPS vehicle speedometer.
9, the collecting method during measured automobiles pass-by noise as claimed in claim 1 is characterized in that:
The data acquisition system (DAS) of described tape controller LAN module is meant that data acquisition system (DAS) itself has the controller local area network module or data acquisition system (DAS) does not have the controller local area network module, and other increases an external controller local area network module.
Collecting method during 10, as claim 1 or 5 or 8 described measured automobiles pass-by noises is characterized in that:
Vehicle speedometer itself has controller local area network output, if not tape controller LAN (Local Area Network) output of vehicle speedometer, other increases an external controller local area network module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100246558A CN100485732C (en) | 2006-03-14 | 2006-03-14 | Date collecting method for measuring automobile external noise |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100246558A CN100485732C (en) | 2006-03-14 | 2006-03-14 | Date collecting method for measuring automobile external noise |
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| CN101038698A CN101038698A (en) | 2007-09-19 |
| CN100485732C true CN100485732C (en) | 2009-05-06 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949775B (en) * | 2010-08-17 | 2011-12-14 | 奇瑞汽车股份有限公司 | Measuring method of ground reflection noise source |
| CN102445266B (en) * | 2010-10-15 | 2013-02-27 | 重庆大学 | Automobile outfield pass-by-noise source recognition system and method |
| CN102435441B (en) * | 2011-09-08 | 2014-07-09 | 中国汽车技术研究中心 | Data acquisition system for emission parameter of moving vehicle |
| CN102680077B (en) * | 2012-04-01 | 2013-08-21 | 中国汽车技术研究中心 | Outside noise quick measurement system during vehicle acceleration |
| CN106468592B (en) * | 2015-08-17 | 2019-04-30 | 上汽通用汽车有限公司 | Pass through the method and apparatus of noise testing |
| CN110316118A (en) * | 2018-03-30 | 2019-10-11 | 潍柴动力股份有限公司 | A kind of noise control method and device |
| CN112443435A (en) * | 2019-09-05 | 2021-03-05 | 北汽福田汽车股份有限公司 | Noise control system, method and device and automobile |
| CN110631842A (en) * | 2019-10-15 | 2019-12-31 | 重庆长安汽车股份有限公司 | Method for testing surface noise source intensity of automobile side window |
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Address after: Anting Jiading District Town, Shanghai City Road No. 123 in 201805 Patentee after: SAIC VOLKSWAGEN AUTOMOTIVE COMPANY LIMITED Address before: 201805 No. 63, Luopu Road, Shanghai, Anting Patentee before: Dazhang Automobile Co., Ltd., Shanghai |