CN206400055U - A kind of arc detection system and the vehicle with the arc detection system - Google Patents
A kind of arc detection system and the vehicle with the arc detection system Download PDFInfo
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- CN206400055U CN206400055U CN201621462771.3U CN201621462771U CN206400055U CN 206400055 U CN206400055 U CN 206400055U CN 201621462771 U CN201621462771 U CN 201621462771U CN 206400055 U CN206400055 U CN 206400055U
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Abstract
The utility model provides a kind of arc detection system and the vehicle with the arc detection system, in an electric power system, including：Current detection module, located at any electrical connecting position of the electric power system, the electric current of the electrical connecting position is flowed through in detection, forms one and detects signal；Filtration module, is connected with the current detection module, receives the detection signal, and to the detection signal filtering, forms a filtered signal；Analog-to-digital conversion module, is connected with the filtration module, and the filtered signal is converted into data signal；Signal processing module, receives the data signal, and is compared with the threshold value of the signal amplitude built in it, when the amplitude of the data signal is more than the threshold value, the fault message of outgoing one.After adopting the above technical scheme, can the in-car electric arc production of automatic detection, and start safety measure after occurring for failure.
Description
Technical field
The utility model is related to field of vehicle control, more particularly to a kind of arc detection system and with the arc-detection system
The vehicle of system.
Background technology
Battery is widely used many years as power supply in auto industry, and they are played in automobile power supply system
Important effect.Each unit such as engine control system of automobile, chassis control system, air-conditioner control system, electronics
Servo steering system and some other part are all connected by cable through connector with power supply.If between this base part and power supply
Connection occur some failures, such as contact fault, very great harm will be caused when automotive ignition starts.If there is electricity
Source contact fault, will produce electric arc in automobile starting running, the generation of electric arc will seriously endanger automobile component or even
The security of vehicle.
Accordingly, it would be desirable to it is a kind of can the in-car electric arc production of automatic detection arc detection system, and failure can be directed to
Start the vehicle of safety measure after generation.
Utility model content
In order to overcome above-mentioned technological deficiency, the purpose of this utility model is to provide a kind of arc detection system and with this
The vehicle of arc detection system.
The utility model discloses a kind of arc detection system, in an electric power system, including：Current detection module,
Located at any electrical connecting position of the electric power system, the electric current of the electrical connecting position is flowed through in detection, forms one and detects
Signal；Filtration module, is connected with the current detection module, receives the detection signal, and to the detection signal filtering, shape
Into a filtered signal；Analog-to-digital conversion module, is connected with the filtration module, and the filtered signal is converted into digital letter
Number；Signal processing module, receives the data signal, and is compared with the threshold value of the signal amplitude built in it, when the numeral letter
Number amplitude be more than the threshold value when, the fault message of outgoing one.
Preferably, the arc detection system also includes display interface, is connected with the signal processing module, receives described
Fault message is simultaneously shown.
Preferably, the current detection module includes：Shunt current sensors.
Preferably, the filtration module includes bandpass filter, filters out and is less than 40kHz in the detection signal and is higher than
100kHz part.
Preferably, the signal processing module includes：Fourier transform unit, Fourier's change is carried out to the data signal
Change, to form a spectrogram；Feature extraction unit, extracts in the spectrogram and characterizes the data signal amplitude variable quantity
Value, compares amplitude to form one；Judging unit, the amplitude that compares is compared with the threshold value.
The invention also discloses a kind of vehicle, including above-mentioned arc detection system.
Employ after above-mentioned technical proposal, compared with prior art, have the advantages that：
1. arc detection system can detect the failure of each tie point of automobile power source electric power system；If there is contact fault, electricity
Arc detecting system can detect and cut off electric power system；
After 2. failure occurs, by timely reporting fault problem, convenient maintenance.
Brief description of the drawings
Fig. 1 is the system structure diagram for meeting arc detection system in the preferred embodiment of the utility model one.
Embodiment
Advantage of the present utility model is expanded on further below in conjunction with accompanying drawing and specific embodiment.
Refering to Fig. 1, to meet the system structure diagram of arc detection system in the preferred embodiment of the utility model one.
In the embodiment, arc detection system is arranged in the electric power system such as vehicle or other devices, when the somewhere in electric power system
When breaking down, arc detection system will detect the failure.Specifically, arc detection system includes：
- current detection module
Current detection module is arranged on any one or more electrical connecting positions of electric power system.Due to electrical connection position
Situations such as occurring connecting line upset, hybrid junction is put easily, therefore, current detection module is arranged at electrical connecting position, works as electric current
When flowing through, size of current, which is detected, and forms one can reflect the detection signal of size of current.It is appreciated that to electric current
Detection is that in real time, when occurring the failures such as short circuit in electric power system, detection signal reflection is surge condition occur.
For the concrete configuration of the current detection module, current transformer etc. can be used, in its current signal formed,
Alternating current-direct current signal is clearly demarcated, convenient that subsequently the AC signal and direct current signal in current signal are dealt with respectively.And as Hall is passed
Sensor window by direct current with exchange the current signal that is mixed to form, when DC current is larger, AC signal composition is blanked, subsequently
Difficulty is dealt with, and is not suitable for as current detection module.
- filtration module
Filtration module is connected with current detection module, after detecting that signal is formed, and filtration module will receive the detection signal,
And detection signal is filtered, to remove signal noise, form a filtered signal.
In one preferred embodiment, filtration module includes bandpass filter, and the bandpass filter is configured to, and filters out inspection
Survey and be less than 40kHz and the part higher than 100kHz in signal, too high or too low unconventional situation is removed, can conveniently observe just
The AC signal for whether having impulse type in normal case part occurs, and pulse current shows the generation of contact fault.
- analog-to-digital conversion module
Analog-to-digital conversion module is connected with filtration module, the filtered signal of the signal that accepts filter formation, and carries out AD to it
Conversion, forms the data signal filtered.If electric arc is formed, the current signal of impulse type is converted into the number with amplitude up and down
Word signal.
- signal processing module
Signal processing module is connected with analog-to-digital conversion module, receives data signal, and the amplitude of data signal is carried
Take.In signal processing module, the threshold value of a signal amplitude is preset, the threshold value is manual setting, and user can be according to used
The specification requirement of device sets the threshold value, the maximum current that electric power system can bear or should bear is represented, when the amplitude of extraction is big
When threshold value, reflect current electric power system and produce electric arc, in malfunction, then signal processing module will be sent out one therefore
Hinder information, to inform user's failure situation.
Preferably, in order that failure situation can intuitively be known by obtaining user, arc detection system also includes a display circle
Face, the display interface is connected with signal processing module, after fault message is formed, and will receive the fault message, and by fault message
Intuitively shown in display interface, for example, all electrical connecting positions of electric power system are marked in display unit, when a certain electricity
When gas link position breaks down, by way of being shown flicker and/or red light, user is informed.
In another preferred or optional embodiment, current detection module includes shunt current sensors.During work, lead to
The electric current for crossing shunt current sensors is the electric current for flowing through electric power system, shunt current sensor convection current over-sampling resistance
Electric current carries out sample detecting, to obtain size of current in current circuit.In this embodiment, shunt current sensors can be
The resistive element being made up of metal alloy, so as to bear heavy current impact.
Signal processing module is the extraction that amplitude is carried out to data signal, must be included：Fourier transform unit, feature extraction
Unit and judging unit.Fourier transform unit will carry out Fourier transformation to data signal, form a spectrogram, available to show
Ripple device shows the pattern of the spectrogram, and convenient use person is checked in more intuitive mode in the form of data signal.Then, feature is carried
Unit is taken to be extracted to the value for characterizing data signal amplitude variable quantity in spectrogram, for example, to certain section in spectrogram or somewhere
Extreme value is extracted and gone out, and calculating forms variation delta, and the variable quantity is the comparison amplitude for subsequently needing to be compared.Judge single
Member, which is received, compares amplitude, and is compared with default threshold value, to judge the circuit conditions of current electric power system.By above-mentioned configuration,
Signal can quickly and accurately be handled, feedback is made to circuit condition in time.
Arc detection system in any of the above-described embodiment, can be used into vehicle, for example, connection is in the supply, or car
At one or more nodes of certain of interior circuit, the electric arc occurred in circuit is detected.
It should be noted that embodiment of the present utility model has preferably implementation, and not the utility model is appointed
The limitation of what form, any one skilled in the art changes or is modified to possibly also with the technology contents of the disclosure above
Same effective embodiment, as long as without departing from the content of technical solutions of the utility model, according to technical spirit pair of the present utility model
Any modification or equivalent variations and modification that above example is made, in the range of still falling within technical solutions of the utility model.
Claims (6)
1. a kind of arc detection system, in an electric power system, it is characterised in that including：
Current detection module, located at any electrical connecting position of the electric power system, the electrical connecting position is flowed through in detection
Electric current, formed one detect signal；
Filtration module, is connected with the current detection module, receives the detection signal, and to the detection signal filtering, shape
Into a filtered signal；
Analog-to-digital conversion module, is connected with the filtration module, and the filtered signal is converted into data signal；Signal transacting mould
Block, receives the data signal, and is compared with the threshold value of the signal amplitude built in it, when the amplitude of the data signal is more than institute
When stating threshold value, the fault message of outgoing one.
2. arc detection system as claimed in claim 1, it is characterised in that
The arc detection system also includes display interface, is connected with the signal processing module, receives the fault message simultaneously
Display.
3. arc detection system as claimed in claim 1, it is characterised in that
The current detection module includes：Shunt current sensors.
4. arc detection system as claimed in claim 1, it is characterised in that
The filtration module includes bandpass filter, filters out in the detection signal and is less than 40kHz and the part higher than 100kHz.
5. arc detection system as claimed in claim 1, it is characterised in that
The signal processing module includes：
Fourier transform unit, carries out Fourier transformation, to form a spectrogram to the data signal；
Feature extraction unit, extracts the value that the data signal amplitude variable quantity is characterized in the spectrogram, is compared with forming one
Amplitude；
Judging unit, the amplitude that compares is compared with the threshold value.
6. a kind of vehicle, it is characterised in that including the arc detection system as described in claim any one of 1-5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621462771.3U CN206400055U (en) | 2016-12-29 | 2016-12-29 | A kind of arc detection system and the vehicle with the arc detection system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621462771.3U CN206400055U (en) | 2016-12-29 | 2016-12-29 | A kind of arc detection system and the vehicle with the arc detection system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110048375A (en) * | 2019-03-26 | 2019-07-23 | 华为技术有限公司 | A kind of energy-storage system arc-detection and guard method and relevant apparatus |
| CN110542835A (en) * | 2018-05-29 | 2019-12-06 | 上海海拉电子有限公司 | Detection method, detection system and test system for vehicle arc fault |
| CN114523850A (en) * | 2021-12-23 | 2022-05-24 | 大连理工江苏研究院有限公司 | Electric spark fault alarm and alarm method for electric vehicle direct current power supply system |
-
2016
- 2016-12-29 CN CN201621462771.3U patent/CN206400055U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542835A (en) * | 2018-05-29 | 2019-12-06 | 上海海拉电子有限公司 | Detection method, detection system and test system for vehicle arc fault |
| CN110542835B (en) * | 2018-05-29 | 2021-11-02 | 上海海拉电子有限公司 | Detection method, detection system and test system for vehicle arc fault |
| CN110048375A (en) * | 2019-03-26 | 2019-07-23 | 华为技术有限公司 | A kind of energy-storage system arc-detection and guard method and relevant apparatus |
| CN114523850A (en) * | 2021-12-23 | 2022-05-24 | 大连理工江苏研究院有限公司 | Electric spark fault alarm and alarm method for electric vehicle direct current power supply system |
| CN114523850B (en) * | 2021-12-23 | 2024-04-16 | 大连理工江苏研究院有限公司 | Electric spark fault alarm and alarm method for electric vehicle direct-current power supply system |
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