CN107415824A - A kind of signal processing method of automobile lane change accessory system and process circuit and application - Google Patents
A kind of signal processing method of automobile lane change accessory system and process circuit and application Download PDFInfo
- Publication number
- CN107415824A CN107415824A CN201710292722.2A CN201710292722A CN107415824A CN 107415824 A CN107415824 A CN 107415824A CN 201710292722 A CN201710292722 A CN 201710292722A CN 107415824 A CN107415824 A CN 107415824A
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- China
- Prior art keywords
- signal
- lane change
- accessory system
- signal processing
- change accessory
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/021—Auxiliary means for detecting or identifying radar signals or the like, e.g. radar jamming signals
- G01S7/022—Road traffic radar detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/35—Details of non-pulse systems
- G01S7/352—Receivers
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/16—Anti-collision systems
- G08G1/167—Driving aids for lane monitoring, lane changing, e.g. blind spot detection
Abstract
The invention belongs to auto-parts product scope, more particularly to a kind of signal processing method of automobile lane change accessory system and process circuit and application.The invention provides a kind of signal processing method of automobile lane change accessory system, it is：S1：Gain process；S2：Noise reduction process；S3：Analog-to-digital conversion；S4：FTT is changed.Present invention also offers a kind of signal processing circuit of automobile lane change accessory system, the detection signal that detection sensor obtains passes sequentially through gain circuitry module, noise reduction process touch block, analog-to-digital conversion module and FTT modular converters.Present invention also offers application of the signal processing circuit of the signal processing method of above-mentioned automobile lane change accessory system and above-mentioned automobile lane change accessory system in automobile real-time road condition monitoring field.Technical scheme provided by the invention, solve in the prior art, the road conditions detection in lane change auxiliary warning sonification system is complicated there is signal transacting, it is impossible to the technological deficiency of accurate processing traffic information.
Description
It is 201710203838.4 this application claims Chinese Patent Application No., the applying date is on 03 30th, 2017, application
Artificial Guangdong East Arrow Automotive Products Manufacturing Co., Ltd., invention and created name are " a kind of automobile lane change accessory system and its control
The priority of method and application ".
Technical field
The invention belongs to auto-parts product scope, more particularly to a kind of signal transacting side of automobile lane change accessory system
Method and process circuit and application.
Background technology
In the early 1990s, the good economic development impetus has driven the rise of automobile industry.Start within 1997, with
Domestic Automotive Industry develops rapidly, the constantly improve of town road construction, and the notable growth of income level of resident, private car disappears
In time-consuming generation, raises the curtain on sth, and China initially enters whole people's automobile consumption epoch.China " planned economy " period, automobile always by
It is the production work instrument based on group's use as important means of production management.However, with China's reform not
Disconnected to go deep into, there occurs basic change for this case.National " 15 " plan proposes first：Automobile is encouraged to enter family." automobile
Dream " is no longer the patent of the rich, and it has no longer been extravagant hope for many Chinese families to possess automobile.Automobile steps on a large scale
Common people family, streets and lanes, colourful private car have turned into the beautiful scenery in city.Moreover, with people's lives
Horizontal raising and the good growth momentum of social economy, people can go to the every nook and cranny in the world by automobile.
For effective guarantee traffic safety, technical staff develops a kind of lane change auxiliary warning sounding for being distributed in car door both sides
Whether system, the system are mainly used in car assisted lane change, instructed by reception signal, and buzzer rings, remind driver can be with
Safe lane change, people are allowed to realize corresponding operating in normal driving process, so as to improve the safety coefficient driven.Wherein,
Aided in as lane change in warning sonification system, detection road conditions are an important links.In the prior art, road conditions detection there is
Signal transacting is complicated, it is impossible to the technological deficiency of accurate processing traffic information.
Therefore, signal processing method and process circuit and the application of a kind of automobile lane change accessory system are developed, for solving
Certainly in the prior art, the road conditions detection in lane change auxiliary warning sonification system, it is complicated there is signal transacting, it is impossible to accurate processing
The technological deficiency of traffic information, become those skilled in the art's urgent problem to be solved.
The content of the invention
In view of this, the invention provides a kind of signal processing method of automobile lane change accessory system and process circuit with answering
With for solving in the prior art, the road conditions detection in lane change auxiliary warning sonification system is complicated there is signal transacting, no
The technological deficiency of traffic information can accurately be handled.
The invention provides a kind of signal processing method of automobile lane change accessory system, the automobile lane change accessory system
Signal processing method is：
S1：Gain process：The signal detected is carried out high-gain processing by detection sensor, obtains the level letter of high-amplitude
Number；
S2：Noise reduction process：The level signal obtains intermediate-freuqncy signal through noise reduction process；
S3：Analog-to-digital conversion：The analog signal carries out analog-to-digital conversion after over-sampling, obtains data signal；
S4：FTT is changed：The data signal is changed through FTT, obtains the frequency characteristic of signal.
Preferably, in S1, detection sensor is 24G millimetre-wave radars.
Preferably, in S1, the gain process is multistage gain processing.
Preferably, in S2, the method for the noise reduction process is：The level signal filters direct current signal successively and high frequency is made an uproar
Sound, obtain analog signal.
Present invention also offers a kind of signal processing circuit of automobile lane change accessory system, the process circuit includes：Increase
Beneficial circuit module, noise reduction process touch block, analog-to-digital conversion module and FTT modular converters；
The detection signal that detection sensor obtains passes sequentially through gain circuitry module, noise reduction process touch block, analog-to-digital conversion
Module and FTT modular converters.
Preferably, the detection sensor is 24G millimetre-wave radars.
Preferably, the gain circuitry module is multistage gain circuit module.
Preferably, the noise reduction process module includes：Direct current signal filtering module and high-frequency noise filtering module；
The direct current signal filtering module is arranged at before the high-frequency noise filtering module.
Preferably, the direct current signal filtering module is capacitively coupled filtering module, and the high-frequency noise filtering module is
Integrate filtering module.
Present invention also offers a kind of signal transacting side of the automobile lane change accessory system including described in any of the above one
The signal processing circuit of automobile lane change accessory system described in method and any of the above one monitors field in automobile real-time road condition
Application.
In summary, the invention provides a kind of signal processing method of automobile lane change accessory system, the automobile lane change
The signal processing method of accessory system is：S1：Gain process：The signal detected is carried out high-gain processing by detection sensor,
Obtain the level signal of high-amplitude；S2：Noise reduction process：The level signal obtains intermediate-freuqncy signal through noise reduction process；S3：Analog-to-digital conversion：
The analog signal carries out analog-to-digital conversion after over-sampling, obtains data signal；S4：FTT is changed：The data signal turns through FTT
Change, obtain the frequency characteristic of signal.Present invention also offers a kind of signal processing circuit of automobile lane change accessory system, the processing
Circuit includes：Gain circuitry module, noise reduction process touch block, analog-to-digital conversion module and FTT modular converters；Detection sensor obtains
Detection signal pass sequentially through gain circuitry module, noise reduction process touch block, analog-to-digital conversion module and FTT modular converters.This hair
At the bright signal processing method for additionally providing above-mentioned automobile lane change accessory system and the signal of above-mentioned automobile lane change accessory system
Manage application of the circuit in automobile real-time road condition monitoring field.A kind of signal transacting of automobile lane change accessory system provided by the invention
Method and process circuit and application, solve in the prior art, the road conditions detection in lane change auxiliary warning sonification system, there is
Signal transacting is complicated, it is impossible to the technological deficiency of accurate processing traffic information.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is that a kind of flow of signal processing method of automobile lane change accessory system provided in an embodiment of the present invention is illustrated
Figure.
Embodiment
The embodiments of the invention provide a kind of signal processing method of automobile lane change accessory system and process circuit and application,
For solving in the prior art, the road conditions detection in lane change auxiliary warning sonification system is complicated there is signal transacting, it is impossible to accurate
The really technological deficiency of processing traffic information.
The technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example only part of the embodiment of the present invention, rather than whole embodiments.It is common based on the embodiment in the present invention, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
In order to which the present invention is described in more detail, with reference to embodiment to a kind of automobile lane change accessory system provided by the invention
Signal processing method and process circuit and application, be specifically described.
Referring to Fig. 1, Fig. 1 is a kind of signal processing method of automobile lane change accessory system provided in an embodiment of the present invention
Schematic flow sheet.
Below in conjunction with process circuit and Fig. 1, further explanation is made to signal processing.
The embodiments of the invention provide a kind of signal processing method of automobile lane change accessory system, the automobile lane change auxiliary
The signal processing method of system is：
S1：Gain process：The signal detected is carried out high-gain processing by detection sensor, obtains the level letter of high-amplitude
Number；During practical application, because the road conditions detection signal output amplitude of detection sensor is smaller, and easily by dry
Disturb, in the embodiment of the present invention, high-gain processing is carried out to road conditions detection signal first, road conditions detection signal is reached a tentering
Degree, the road conditions detection signal of reinforcement can be effectively increased signal and noise signal resolution, and can meet rear class signal transacting
It is required that；Gain process can effectively amplification detection sensor output small-signal, strengthen the antijamming capability of signal, be easy to simulate
Conversion of the signal to data signal.
S2：Noise reduction process：Level signal obtains intermediate-freuqncy signal through noise reduction process；Due to itself spy by detection sensor
Property limitation, and in signal reflex, refraction and environment various electromagnetic signals interference, detection sensor output signal in gain
Afterwards, the skew of amplifying circuit output reference can be caused excessive, large effect be present to system；Meanwhile according to doppler principle, have
Frequency caused by the GES of effect is answered in specific frequency range, and noise reduction process can also effectively reduce the difficulty of post processing.
S3：Analog-to-digital conversion：Analog signal carries out analog-to-digital conversion after over-sampling, obtains data signal；By gain and noise reduction
The analog signal of processing, then the sampling by certain frequency, analog-to-digital conversion is carried out, is converted into the accessible data of computer.
S4：FTT is changed：Data signal is changed through FTT, obtains the frequency characteristic of signal.Due to including the signal of multiple frequencies
Superposition, the time domain data after conversion are difficult to deal with, and for the frequency signal that processing is complicated, are further carried out fast fourier and become
Change and time-domain signal is converted into frequency-region signal, according to sampling thheorem, as the sample frequency using 100kHz, sampling number 1k
When, 0 can be analyzed in sample data and arrives 50kHz valid data, resolving accuracy 50Hz, valid data are in each frequency
Moving object vehicle of corresponding speed etc..
The present invention relates to a kind of processing mode of automobile lane change accessory system radar signal, the present invention is powered by midband
Road, gain circuitry, analog to digital conversion circuit, a few part compositions of Digital Signal Processing.System uses 24G millimetre-wave radars as detection
Sensor, a kind of method for Radar Signal Processing of present invention offer, accurate calculation radar signal processor, accurate judgement are current
Road condition, safe and reliable pre-warning signal is provided for car owner.
Further optimisation technique scheme, in technical scheme provided in an embodiment of the present invention, detection sensor is 24G millimeters
Ripple radar, because Doppler effect acts on, when relative motion be present, there is frequency in the millimeter wave of transmitting and the millimeter wave received
Rate is poor, and exports a middle low frequency signal, when depositing the moving object of multiple friction speeds simultaneously, can produce multiple different frequencies
Signal waveform, after system is decomposed to signal, draw the information of present road different automobile types speed.
In a kind of signal processing circuit of automobile lane change accessory system provided by the invention, noise reduction process module includes：Directly
Flow signal filtering module and high-frequency noise filtering module；Direct current signal filtering module is arranged at before high-frequency noise filtering module.
Accordingly, the method for noise reduction process is：Gain signal filters direct current signal and high-frequency noise successively, obtains analog signal.According to
Analysis to detection sensor detection signal and operation principle, the direct current and AC signal that detection letter includes simultaneously, direct current point
Amount can influence the amplifying circuit work of rear class, cause the skew of amplifying circuit output reference excessive, and direct current signal is not comprising useful
Information, therefore first filtering direct current signal reduce its influence to system；Meanwhile detection signal also includes high-frequency noise, root
According to doppler principle, frequency caused by effective GES is answered in specific frequency range, can after high-frequency signal is filtered
Effectively reduce the difficulty of post processing.
In a kind of signal processing method S1 of automobile lane change accessory system provided in an embodiment of the present invention, gain process is more
Stage gain is handled.According to for various road conditions it is actually detected during find, in some complex road conditions, one pass gain
Circuit is difficult to the signal amplitude for reaching needs, and gain it is excessive after easily disturbed by circuit noise, therefore, the present invention is implemented
In the technical scheme that example provides, using multistage gain circuit, and different stage gains are used with DC-isolation, reduce interference.
Effectively to avoid the interference of invalid signals, it is ensured that the accuracy that road conditions monitor in real time, it is provided in an embodiment of the present invention
In technical scheme, direct current signal filtering module is capacitively coupled filtering module, and high-frequency noise filtering module is integration filtering module.
It can be drawn from above-mentioned technical proposal, at a kind of signal of automobile lane change accessory system provided in an embodiment of the present invention
Reason method and process circuit and application, there is advantages below：
1st, using band-pass gain circuit, the isolation of direct current signal is realized by capacitively coupled, is filtered by integrating circuit high
Frequency garbage signal；Using multistage gain, per one-level by capacitively coupled, signal interference is avoided；
2nd, the circuit changed using modulus signal, analog signal is converted into the data signal of computer disposal；
3rd, time-domain signal is converted into frequency-region signal using FFT, after FFT is changed, the corresponding speed of a frequency
Signal, when light has multiple speed, produce multiple frequency signals.
4th, the signal of multiple Frequency points can be scanned, realizes multi-targets recognition, and multiple echo signal non-interference；
5th, the direction of motion of the phase disturbance in judgement thing of signal is passed through
In summary, the invention provides a kind of signal processing method of automobile lane change accessory system, the automobile lane change
The signal processing method of accessory system is：S1：Gain process：The signal detected is carried out high-gain processing by detection sensor,
Obtain the level signal of high-amplitude；S2：Noise reduction process：The level signal obtains intermediate-freuqncy signal through noise reduction process；S3：Analog-to-digital conversion：
The analog signal carries out analog-to-digital conversion after over-sampling, obtains data signal；S4：FTT is changed：The data signal turns through FTT
Change, obtain the frequency characteristic of signal.Present invention also offers a kind of signal processing circuit of automobile lane change accessory system, the processing
Circuit includes：Gain circuitry module, noise reduction process touch block, analog-to-digital conversion module and FTT modular converters；Detection sensor obtains
Detection signal pass sequentially through gain circuitry module, noise reduction process touch block, analog-to-digital conversion module and FTT modular converters.This hair
At the bright signal processing method for additionally providing above-mentioned automobile lane change accessory system and the signal of above-mentioned automobile lane change accessory system
Manage application of the circuit in automobile real-time road condition monitoring field.A kind of signal transacting of automobile lane change accessory system provided by the invention
Method and process circuit and application, solve in the prior art, the road conditions detection in lane change auxiliary warning sonification system, there is
Signal transacting is complicated, it is impossible to the technological deficiency of accurate processing traffic information.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
- A kind of 1. signal processing method of automobile lane change accessory system, it is characterised in that the letter of the automobile lane change accessory system Number processing method is：S1：Gain process：The signal detected is carried out high-gain processing by detection sensor, obtains the level signal of high-amplitude；S2：Noise reduction process：The level signal obtains intermediate-freuqncy signal through noise reduction process；S3：Analog-to-digital conversion：The analog signal carries out analog-to-digital conversion after over-sampling, obtains data signal；S4：FTT is changed：The data signal is changed through FTT, obtains the frequency characteristic of signal.
- 2. the signal processing method of automobile lane change accessory system according to claim 1, it is characterised in that in S1, detection Sensor is 24G millimetre-wave radars.
- 3. the signal processing method of automobile lane change accessory system according to claim 1, it is characterised in that described in S1 Gain process is multistage gain processing.
- 4. the signal processing method of automobile lane change accessory system according to claim 1, it is characterised in that described in S2 The method of noise reduction process is：The level signal filters direct current signal and high-frequency noise successively, obtains intermediate-freuqncy signal.
- 5. a kind of signal processing circuit of automobile lane change accessory system, it is characterised in that the process circuit includes：Gain circuitry Module, noise reduction process touch block, analog-to-digital conversion module and FTT modular converters；The detection signal that detection sensor obtains passes sequentially through gain circuitry module, noise reduction process touch block, analog-to-digital conversion module With FTT modular converters.
- 6. the signal processing circuit of automobile lane change accessory system according to claim 5, it is characterised in that the detection passes Sensor is 24G millimetre-wave radars.
- 7. the signal processing circuit of automobile lane change accessory system according to claim 5, it is characterised in that the gain electricity Road module is multistage gain circuit module.
- 8. the signal processing circuit of automobile lane change accessory system according to claim 5, it is characterised in that its feature exists In the noise reduction process module includes：Direct current signal filtering module and high-frequency noise filtering module；The direct current signal filtering module is arranged at before the high-frequency noise filtering module.
- 9. the signal processing circuit of automobile lane change accessory system according to claim 8, it is characterised in that its feature exists In the direct current signal filtering module is capacitively coupled filtering module, and the high-frequency noise filtering module is integration filtering module.
- 10. a kind of signal processing method and power of the automobile lane change accessory system including described in Claims 1-4 any one Profit requires that the signal processing circuit of the automobile lane change accessory system described in 5 to 9 any one monitors field in automobile real-time road condition Application.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017102038384 | 2017-03-30 | ||
| CN201710203838 | 2017-03-30 |
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| CN107415824A true CN107415824A (en) | 2017-12-01 |
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| CN201710292722.2A Pending CN107415824A (en) | 2017-03-30 | 2017-04-28 | A kind of signal processing method of automobile lane change accessory system and process circuit and application |
| CN201810018904.5A Pending CN108162855A (en) | 2017-03-30 | 2018-01-09 | A kind of automobile lane change auxiliary system and its control method and application |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112637012A (en) * | 2020-12-21 | 2021-04-09 | 江苏省未来网络创新研究院 | SDN network-based link performance parameter measurement system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108961839A (en) * | 2018-09-05 | 2018-12-07 | 奇瑞汽车股份有限公司 | Driving lane change method and device |
| CN110001646A (en) * | 2019-04-08 | 2019-07-12 | 上海理工大学 | A kind of voice control automobile intelligent lane change system |
| CN115214361B (en) * | 2021-11-29 | 2023-09-12 | 广州汽车集团股份有限公司 | Lane changing reminding method, system and automobile |
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| CN108162855A (en) | 2018-06-15 |
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Application publication date: 20171201 |