CN109866630A - A kind of electric car radio energy transmission system detection device of metal foreign body based on radar range finding and multi-coil coupling technique - Google Patents
A kind of electric car radio energy transmission system detection device of metal foreign body based on radar range finding and multi-coil coupling technique Download PDFInfo
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- CN109866630A CN109866630A CN201910291740.8A CN201910291740A CN109866630A CN 109866630 A CN109866630 A CN 109866630A CN 201910291740 A CN201910291740 A CN 201910291740A CN 109866630 A CN109866630 A CN 109866630A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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Abstract
A kind of electric car radio energy transmission system detection device of metal foreign body based on radar range finding and multi-coil coupling technique, belongs to field of non destructive testing.It is characterized in that CW with frequency modulation (FMCW) radar range finding technology and multi-coil coupling metal detection technology, which is respectively adopted, carries out real-time monitoring to the electric car radio energy transmission system state before work and in charging process.Described device includes radar scanning module 1, distance detection module 2, short distance metal detection module 3, analog-to-digital conversion module 4, state recognition and information transmission modular 5, ipc monitor module 6, alarm security module 7 and charging closure module 8, realizes the status monitoring to the wireless charging system for electric automobile before work and in charging process.The present apparatus detects wireless charging system foreign matter situation by examining the variation of multi-coil coupled magnetic field, calculating each scanning element at a distance from system receiving coil surface, and alarm signal is issued when detecting exception to avoid bigger loss.The present invention timely and effectively can carry out real-time monitoring to wireless charging system for electric automobile state, and apparatus structure is simple, is convenient for man-machine interactive operation, there is higher use value.
Description
Technical field
The present invention relates to a kind of electric car radio energy transmission system based on radar range finding and multi-coil coupling technique
Detection device of metal foreign body couples metal detection technology and frequency modulation more particularly to a kind of application Centimeter Level detection coil array group
Continuous wave radar precision distance measurement technology detects the device of electric car radio energy transmission system metallic foreign body, belongs to lossless inspection
Survey field.
Background technique
It is more and more obvious in the defect of today of rapid economic development, traditional wire power transmission mode.Conducting wire can excessively occupy
Very large space, phase mutual friction can make it become old embrittlement between electric wire, and plug electric spark is had after electric wire aging, jumps power generation
The security risks such as arc also have the unsafe problem of electricity consumption in the complex environments such as water, mine or oil field.So radio energy
Transmission will be the direction of Future Power System development.But wireless power transmission technology is bringing the same of new prospect for people
When the problem of also having this or that.In practical applications, between transmitting coil and receiving coil it is possible that metallic foreign body, it
It will affect coil electromagnetism parameter, and then influence system operating frequency.Simultaneously as eddy current effect, barrier metallization will be generated
Eddy-current loss.More seriously, metal can be such that its surface temperature steeply rises because of eddy current effect, such as encounter combustible material at this time
(polybag etc.) will cause fire, and also or metallic foreign body can generate splashing under the action of high frequency electromagnetic force, to people's
The security of the lives and property causes great security risk.
For the real-time detection of above situation, the method used now has heat detection, sensor detection, system pre-buried
Electromagnetic coil detection etc., but that all there is the adaptability under detection accuracy, real-time, mal-condition is poor etc. all for these methods
More problems, especially partial devices there is realize it is difficult, influence charge power and efficiency, or even destroy electric car without
The problem of line this body structure of electric energy transmission system, thus need one and can adapt to accurately detect electricity under mal-condition in real time
The device of electrical automobile radio energy transmission system operating status.
Summary of the invention
The purpose of the present invention is overcoming the shortcomings of existing electric car radio energy transmission system detection device, by adopting
With Centimeter Level detection coil array group coupling metal detection technology, radar precision distance measurement principle and the relevant technologies, one kind is designed
It can adapt to the device of electric car radio energy transmission system situation in mal-condition, in real time accurate detection work.
Apparatus of the present invention include radar scanning module 1, distance detection module 2, short distance metal detection module 3, modulus turn
Change the mold block 4, state recognition and information transmission modular 5, ipc monitor module 6, alarm security module and charging closure module 8.
Radar scanning module 1 is sticky on spring shock absorption and radiator by chemical reagent and is installed on automobile chassis.Distance detection mould
Block 2 is made of dsp chip, control chip and peripheral circuit.The transmitting terminal of radar scanning module 1 is to electric car wireless charging system
The transmitting terminal transmitting millimeter wave of system, receiving end receive reflection echo, receiving end and distance detection module in radar scanning module 1
Dsp chip in 2 is connected to realize that data are transmitted, and the control chip and state recognition and information in distance detection module 2 pass
Defeated module 5 is connected.Short distance metal detection module 3 is by high frequency oscillator, dsp chip, control chip, detection coil and power
Amplifier composition, short distance metal detection module 3 are located at the side of electric car radio energy transmission system, what measurement generated
Analog signal converts digital quantity for analog quantity and passes to state recognition and information transmission modular 5 by analog-to-digital conversion module 4.
State recognition and the signal that information transmission modular 5 receives distance detection module 2 and analog-to-digital conversion module 4 transmits, to wireless charging
System mode is differentiated, by connecting with ipc monitor module 6 and alarm security module 7, is opened in court verdict exception
Dynamic alarm security module 7 simultaneously informs host computer.Charging closure module 8 and state recognition are in parallel with information transmission modular 5, electronic
It is closed after the work of automobile wireless electric energy Transmission system, realizes the real time monitoring function of radar scanning module 1.
Radar scanning module 1 is fixed on automobile chassis by spring array, with guarantee radar scanning module 1 as far as possible not by
The influence of road bump and automobile engine residual heat.Radar scanning module 1 is made of millimeter wave transmitting terminal and echo reception end, thunder
The frequency modulated continuous wave radar that can emit millimeter wave is chosen up to scan module 1, and it is wireless to electric car to be installed on automobile chassis
Charging system transmitting terminal is progressively scanned.
The detection function of short distance metal detection module 3 realized by multiple Centimeter Level array coil groups, can be to electronic vapour
Vehicle radio charging system transmitting terminal is gradually scanned, and guarantees the precision of metal detection in short distance.
The present invention has the effect of positive: (1) detection device that designs of the present invention, structure is simple, ease of use personnel into
The control of row system；(2) this detection device can largely improve system foreign matter recall rate when in use；(3) this detection fills
Set the requirement that can reach to electric car radio energy transmission system running state real-time monitoring；(4) present apparatus emits frequency modulation
Millimeter wave and multi-coil the coupling metal detector of continuous wave system have the characteristics that precision is high, anti-interference ability is stronger, dislike
Adaptability is good under the conditions of bad.
Detailed description of the invention
Fig. 1 is configuration schematic diagram of the invention；
Fig. 2 is the organigram of short distance metal detection module 3；
Fig. 3 is the inside detection coil arrangement schematic diagram of short distance metal detection module 3.
Hardware configuration label in Fig. 1 is as follows:
Radar scanning module 1, distance detection module 2, short distance metal detection module 3, analog-to-digital conversion module 4, state are known
Module 8 is not closed with information transmission modular 5, ipc monitor module 6, alarm security module and charging.
Each component label in Fig. 2 is as follows:
Wireless charging system for electric automobile transmitting terminal 1, short distance metal detector 2, elevator chamber 3, fixed support 4, stretch
Axis 5.
Specific embodiment
The specific embodiment of summary of the invention is illustrated with reference to the accompanying drawing.
Shown in FIG. 1 is a kind of electric car radio energy transmission system based on radar range finding and multi-coil coupling technique
Detection device of metal foreign body, including radar scanning module 1, distance detection module 2, short distance metal detection module 3, analog-to-digital conversion
Module 4, state recognition and information transmission modular 5, ipc monitor module 6, alarm security module 7 and charging closure module 8.
Before the work of electric car radio energy transmission system, the transmitting terminal of radar scanning module 1 generates and to beam worker
The wireless charging system for electric automobile transmitting terminal to be measured made issues millimeter wave, carries out high speed to wireless charging system emission end surface
Progressive scan, 1 receiving end of radar scanning module carries out echo reception and time data are extracted, the DSP core in distance detection module 2
Piece is by the transmitting high frequency continuous wave moment and receives the echo moment, be calculated each scanning element transmitting high frequency continuous wave pass through it is to be measured
System emission end surface reflection after reach echo reception end by path distance value.At the same time, short distance metal detection
Module 3 carries out sweeping paragraph by paragraph line by line for short distance under the driving of the joint of motor and program, to wireless charging system emission end surface
It retouches, by comparing electric current, voltage waveform, precisely identifies the metallic foreign body situation of wireless charging system emission end surface, be system
Working environment provides double shield.The dsp chip of state recognition and information transmission modular 5 is by range data, current-voltage waveform
After being sent to control chip, control chip monitors system exception situation by the judgement to the two.And via ipc monitor mould
Mode will test data to block 6 by wireless communication and court verdict is sent to host computer and realizes personal monitoring and control, if sentencing
Certainly results abnormity then starts alarm security module 7.
After the work of electric car radio energy transmission system, short distance metal detection module 3 collapses playback, charging automatically
It is closed module 8 to be closed, state recognition and information transmission modular 5 is made to enter short-circuit condition, the transmitting terminal of radar scanning module 1 generates
And the wireless charging system for electric automobile transmitting terminal into operational process to be measured issues millimeter wave, to wireless charging system transmitting terminal
Surface carries out high speed progressive scan, and 1 receiving end of radar scanning module carries out echo reception and time data are extracted, distance detection mould
Dsp chip in block 2 by the transmitting high frequency continuous wave moment and receives the echo moment, and each scanning element transmitting high frequency is calculated and connects
Continuous wave reaches echo reception end institute by the distance value in path after reflecting by examining system emission end surface, state recognition with believe
After range data is sent to control chip by the dsp chip of breath transmission module 5, control chip is by judging that charging system emits
The distance value of each scanning element of end surfaces is monitored abnormal conditions, and square by wireless communication via ipc monitor module 6
Formula will test data and court verdict is sent to host computer and realizes personal monitoring and control, if court verdict then starts police extremely
Report security module 7.
Shown in Fig. 2 is the organigram of short distance metal detection module 3, and short distance metal detector 2 passes through lifting
The scanning paragraph by paragraph line by line to wireless charging system for electric automobile transmitting terminal 1 is realized in mechanical transmission structure in case 3 or so translation.
For elevator chamber 3 by fixed support 4 connection telescopic shafts 5, telescopic shaft 5 is associated with driving motor, it can be achieved that short distance metal detection module
It is whole to collapse playback.
Shown in Fig. 3 is the inside detection coil arrangement schematic diagram of short distance metal detection module 3, coil group as shown in the figure
It is Centimeter Level array coil group, layout is simple, it is easy to accomplish, detection accuracy is high.
One embodiment of the present invention has been described in detail above, rather than limitation of the present invention, related technology are led
The technical staff in domain without departing from the spirit and scope of the present invention, can also make it is various transformation and variation so as to
To obtain corresponding equivalent technical solution, such as increase and decrease Centimeter Level detection coil array group quantity to be to adjust detection effect,
Therefore all equivalent technical solutions should be included into scope of patent protection of the invention.
Claims (4)
1. a kind of detected based on the electric car radio energy transmission system metallic foreign body of radar range finding and multi-coil coupling technique
Device, it is characterised in that fault detection means includes radar scanning module 1, distance detection module 2, short distance metal detection module
3, analog-to-digital conversion module 4, state recognition and information transmission modular 5, ipc monitor module 6, alarm security module and charging are closed
Mold block 8.Radar scanning module 1 is sticky on spring shock absorption and radiator by chemical reagent and is installed on automobile chassis.Away from
It is made of from monitoring module 2 dsp chip, control chip and peripheral circuit.The transmitting terminal of radar scanning module 1 to electric car without
The transmitting terminal transmitting millimeter wave of line charge electric system, receiving end receive reflection echo, receiving end and distance in radar scanning module 1
Dsp chip in monitoring module 2 is connected control chip and state recognition to realize that data are transmitted, in distance detection module 2
It is connected with information transmission modular 5.Short distance metal detection module 3 is by high frequency oscillator, dsp chip, control chip, detection line
Circle is formed with power amplifier, and short distance metal detection module 3 is located at the side of electric car radio energy transmission system, is surveyed
The analog signal that amount generates converts digital quantity for analog quantity by analog-to-digital conversion module 4 and passes to state recognition and information biography
Defeated module 5.State recognition and the signal that information transmission modular 5 receives distance detection module 2 and analog-to-digital conversion module 4 transmits, it is right
Wireless charging system is differentiated, by connecting with ipc monitor module 6 and alarm security module 7, in court verdict exception
Shi Qidong alarm security module 7 simultaneously informs host computer.Charging closure module 8 and state recognition are in parallel with information transmission modular 5,
It is closed after the work of electric car radio energy transmission system, realizes the real time monitoring function of radar scanning module 1.
2. a kind of electric car wireless power transmission based on radar range finding and multi-coil coupling technique as described in claim 1
System detection device of metal foreign body, it is characterised in that radar scanning module 1 is fixed on automobile chassis by spring array, to protect
Card radar scanning module 1 is not influenced as far as possible by road bump and automobile engine residual heat.
3. a kind of electric car wireless power transmission based on radar range finding and multi-coil coupling technique as described in claim 1
System detection device of metal foreign body, it is characterised in that radar scanning module 1 is made of millimeter wave transmitting terminal and echo reception end, thunder
The frequency modulated continuous wave radar that can emit millimeter wave is chosen up to scan module 1, and it is wireless to electric car to be installed on automobile chassis
Charging system transmitting terminal is progressively scanned.
4. a kind of electric car wireless power transmission based on radar range finding and multi-coil coupling technique as described in claim 1
System detection device of metal foreign body, it is characterised in that the detection function of short distance metal detection module 3 is by multiple Centimeter Level arrays
Coil group is realized, can gradually be scanned to wireless charging system for electric automobile transmitting terminal, guarantees metal detection in short distance
Precision.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910291740.8A CN109866630A (en) | 2019-04-10 | 2019-04-10 | A kind of electric car radio energy transmission system detection device of metal foreign body based on radar range finding and multi-coil coupling technique |
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| CN201910291740.8A CN109866630A (en) | 2019-04-10 | 2019-04-10 | A kind of electric car radio energy transmission system detection device of metal foreign body based on radar range finding and multi-coil coupling technique |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113306417A (en) * | 2021-06-08 | 2021-08-27 | 浙江大学 | Data acquisition system and method for wireless charging foreign matter detection |
| CN113640784A (en) * | 2020-05-11 | 2021-11-12 | 柏壹新能源科技(深圳)有限公司 | Foreign matter detection method, control device, radar detection device and system |
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| CN109001821A (en) * | 2018-04-16 | 2018-12-14 | 上海交通大学 | High-precision foreign matter detection system and method in radio energy transmission system |
| CN109038850A (en) * | 2018-06-25 | 2018-12-18 | 华为技术有限公司 | The device of metallic foreign body, device and method in a kind of detection wireless charging system |
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2019
- 2019-04-10 CN CN201910291740.8A patent/CN109866630A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017197918A1 (en) * | 2016-05-20 | 2017-11-23 | 深圳大学 | Electric vehicle wireless charging alignment system based on vehicle license plate recognition and alignment method therefor |
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| CN108082887A (en) * | 2018-01-19 | 2018-05-29 | 天津工业大学 | A kind of conveyer band discerption failure detector based on radar range finding technology |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113640784A (en) * | 2020-05-11 | 2021-11-12 | 柏壹新能源科技(深圳)有限公司 | Foreign matter detection method, control device, radar detection device and system |
| CN113306417A (en) * | 2021-06-08 | 2021-08-27 | 浙江大学 | Data acquisition system and method for wireless charging foreign matter detection |
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Application publication date: 20190611 |