CN101764565B - Electromagnetic interference control device for vehicle-mounted generator control system - Google Patents
Electromagnetic interference control device for vehicle-mounted generator control system Download PDFInfo
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- CN101764565B CN101764565B CN2008101894044A CN200810189404A CN101764565B CN 101764565 B CN101764565 B CN 101764565B CN 2008101894044 A CN2008101894044 A CN 2008101894044A CN 200810189404 A CN200810189404 A CN 200810189404A CN 101764565 B CN101764565 B CN 101764565B
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Abstract
The invention discloses an electromagnetic interference control device for a vehicle-mounted generator control system, which is characterized by comprising at least one filter, a base and an anti-magnetic shielding cover, wherein the at least filter is selected from the following filters: a three-phase input filter which is connected between a generator and a generator controller, a RS232 signal filter which is connected between the generator controller and a control panel, a one-way output filter which is connected between the generator controller and a vehicle-mounted power source, a direct-current input filter which is connected between the generator controller and a vehicle jar, and an excitation output filter which is connected between the generator controller and the generator; the base is used for placing the filter and the generator controller; and the anti-magnetic shielding cover is covered on the base. The invention can solve the interference problem simultaneously in two ways of radiation and filtration without changing original generator control input/output signals or increasing engine loads, thereby eliminating the influence of the vehicle-mounted generator system on vehicle-mounted short-wave communication.
Description
Technical field
The present invention relates to the mobile generator field, relate in particular to a kind of electromagnetic interference control device that is used for vehicle-mounted generator control system.
Background technology
Electromagnetic interference (EMI) refers in particular to and is present in a kind of with the electromagnetic energy form between the electronic equipment, harmful interference phenomenon that possibly have a negative impact to the electronic equipment operate as normal.Electromagnetic interference (EMI) can pass through the equipment room line, propagates with conduction pattern and disturbs, and this kind interference is known as the EMI Conducted Electromagnetic Interference; Or, propagate interference with the electromagenetic wave radiation form through the equipment room communal space, this kind interference is known as the EMI electromagnetic radiation and disturbs.
The frequency range of EMI electromagnetic interference very extensively by practical situation, possibly cover above millimere-wave band from 10KHz to 10GHz.Usually being divided into EMI Conducted Electromagnetic Interference and EMI electromagnetic radiation disturbs.The EMI electromagnetic radiation disturbs and adopts the method for electromagnetic shielding to protect usually.The solution of EMI Conducted Electromagnetic Interference generally is employed in the method that installs power-supply filter on the lead additional and reaches the purpose that suppresses interference.
The complexity of electromagnetic compatibility is puzzlement Site Design person's a difficult problem always.To general interference cases, can use the conventional design thinking, adopt reference power supply filter or conventional screen method to solve.But, must just can find the correct approach of dealing with problems through groping repeatedly for some complication systems and special application scenario.
Under the situation that various burst disasters take place; Need special operation unit unit to carry out fast moving and matching coordinative; Each unit of action need use various electronic equipments; These equipment requirements can also can be used in mobile situation in stationary applica-tions, the AC power that this is the same when just requiring vehicle to provide with fixing the use for vehicle-mounted traffic system.Present power supply plan to oversize vehicle, is through special use generating vehicle, to the dilly that is used to command, normally adopts the power with automobile engine to generate electricity, and comes to supply power to mobile unit.The portable commercial discharge system that this scheme is the most ripe is the U.S. " buffalo " mobile generator system.
Small-sized vehicle power generation system is in routine is used; All very normal always; But when requiring to set up timely vehicle-carrying communication contact between each action unit, particularly general communications service can not be used (like mobile phone), when needing the vehicle-mounted short wave communication of use system; Find that the mobile generator controller system can produce serious interference to the radio frequency of 2～10MHz, cause the most channels of communication apparatus of radiothermy wave band intercommunication all can't carry out normal talking.And; Use common shielding and conventional filter can't eliminate this type of special interference at all; When causing normal vehicle operation, can't carry out short wave communication, this vehicle of give carrying out special duty's task brings very big inconvenience with getting in touch of the external world under the situation of bad weather in the open air.
Summary of the invention
Defective to prior art exists the purpose of this invention is to provide a kind of electromagnetic interference control device that is used for vehicle-mounted generator control system, realizes that short wave communication is interference-free under the generator operating state.
For reaching above-mentioned purpose; The technical scheme that the present invention proposes is: a kind of electromagnetic interference control device that is used for vehicle-mounted generator control system, above-mentioned vehicle-mounted generator control system comprises: the generator that is connected with automobile engine, with the two-way engine controller that is connected of generator, the control panel that links to each other with engine controller; It is characterized in that above-mentioned electromagnetic interference control device comprises:
In the following filter at least one: be connected three-phase input filter on the threephase cable of generator to engine controller, be connected RS232 traffic filter between engine controller and the control panel, be connected unidirectional output filter between engine controller and the vehicle power, be connected direct current input filter between engine controller and the automobile storage battery, be connected the excitation output filter on the excitation signal cable of engine controller to generator;
Be used to place the base of above-mentioned filter and above-mentioned engine controller; And
Cover in the antimagnetic shield cover on the base.
The shell of above-mentioned antimagnetic shield cover and above-mentioned filter is high magnetic conduction galvanized steel plain sheet.
Further, the thickness of above-mentioned high magnetic conduction galvanized steel plain sheet is 2mm.
Above-mentioned antimagnetic shield cover is provided with the ventilating opening that steel shielding ventilating board is processed.
The total interface place of above-mentioned vehicle-mounted generator control system uses shielding material.
Above-mentioned antimagnetic shield cover bonding.
The above-mentioned crust bonding that is connected the cable between generator and the engine controller.
A kind of electromagnetic interference control device that is used for vehicle-mounted generator control system of the present invention; Can solve interference problem from radiation and filtering two aspects simultaneously, thereby eliminate of the influence of mobile generator system not changing original generator control input/output signal, not increasing under the prerequisite of engine load vehicle-mounted short wave communication; And good ventilation and heat design is arranged; Avoided high temperature generation the hidden danger of coming, do not increase extra volume, easy for installation.
Description of drawings
Fig. 1 is the sketch map that a kind of electromagnetic interference control device that is used for vehicle-mounted generator control system of the present invention is installed on vehicle-mounted generator control system.
Embodiment
For making above-mentioned purpose of the present invention, feature and advantage can more obviously be prone to understand, below the special one embodiment of the present invention that combines, elaborate as follows:
As shown in Figure 1; The vehicle-mounted generator control system of present embodiment is that the vehicle power generation system that is directed against " buffalo " 3.5KW, 5KW, 7.5KW engine controller designs; Comprise: the generator 102 that is connected with 1 of automobile engine 01, with the two-way engine controller that is connected of generator 102 103, the control panel 104, the electromagnetic interference control device 105 that link to each other with engine controller 103, above-mentioned each to connect all be to connect through cable.
Above-mentioned electromagnetic interference control device 105 is made up of filter, antimagnetic shield cover 106 and base (not shown).
Because each port signal frequency of " buffalo " control system is different; Therefore also different to the requirement of filter; For example: above-mentioned generator 102 is a three-phase signal to engine controller 103 outputs, and engine controller 103 is an excitation signal to generator 102 outputs, and the waveform of excitation port and three-phase input end mouth is a square wave; It or not normal sine wave; So filter can not be a simple low pass filter, select the filter of different frequency range according to the character of the signal of each port, special excitation filter and traffic filter also will use special absorbing material to accomplish filter function.
So the filter in the above-mentioned electromagnetic interference control device 105 can be following one or more filter:
Be connected three-phase input filter 1 between generator 102 to the engine controller 103, be connected RS232 traffic filter 2 between engine controller 103 and the control panel 104, be connected unidirectional output filter 3 between engine controller 103 and the vehicle power 107, be connected direct current input filter 4 between engine controller 103 and the automobile storage battery 108, be connected the excitation output filter 5 between engine controller 103 to the generator 102.
In application, can be according to concrete disturbed condition, all or part ofly in vehicle-mounted generator control system install above-mentioned filter additional, most preferred embodiment then is that above-mentioned filter all is installed in the vehicle-mounted generator control system.
In the present embodiment; The working procedure of the electromagnetic interference control device 105 in the vehicle-mounted generator control system is: the control panel 104 by " buffalo " control system sends power generation command, passes to engine controller 103 through RS232 traffic filter 2 passages, passes through the 12VDC electricity supply generator controller 103 of the direct current input filter 4 of 12V with automobile storage battery 108 simultaneously; Change through engine controller 103 inner abilities; Through excitation output filter 5, the square wave power signal about 1MHz is passed to " buffalo " generator 102, the excitatory beginning of generator generated electricity; The three-phase electricity of the 1500Hz that generator 102 sends inputs to engine controller 103 through the three-phase input filter 1 of customization; Through after the frequency conversion, through single-phase output filter 3 output 220VAC electricity, the equipment of carrying 107 of buying car in installments uses;
When above-mentioned filter is installed; At first above-mentioned filter is installed on the base; Then " buffalo " engine controller 103 is placed on the base, above-mentioned filter and interface are separately connected, filter and engine controller are all covered on the base with antimagnetic shield cover 106.So not only solve electromagnetic compatibility problem, also reduced the space simultaneously.
In the present embodiment, it is that the high magnetic conduction galvanized steel plain sheet of 2mm is processed that the shell of above-mentioned antimagnetic shield cover and above-mentioned filter all adopts thickness, and all uses shielding material at the total interface place of system, to solve electromagnetic compatibility problem more perfectly.
Owing to there is in " buffalo " engine controller the power conversion of frequency conversion etc. to exist; Cause the loss of controller very big; Controller needs air blast cooling; So adopt the better steel shielding of magnetic conductivity ventilating board in the processing of the ventilating opening on the antimagnetic shield cover, and the processing in slit used shielding material, so just avoided the hidden danger that high temperature brought.
In the present embodiment, above-mentioned antimagnetic shield cover and be connected generator and engine controller between the crust of cable all carry out bonding.
Utilize near field probes and EMI receiver that the mobile generator controller system of present embodiment is carried out test repeatedly, find inhibition that this electromagnetic interference control device is successful " buffalo " mobile generator controller system to (the serious interference that 2～10MHz) radio frequencies produce.
To sum up for the detailed description of embodiment characteristic, be intended to deepen the understanding that is used for the electromagnetic interference control device of vehicle-mounted generator control system to of the present invention, be not scope and the polytropy that limits this patent application implementation with this.So every reconfiguration equivalent or approximate with respect to the above embodiment of the present invention can realize the object of the invention design, all should be regarded as the category that belongs to patent protection of the present invention.
Claims (6)
1. electromagnetic interference control device that is used for vehicle-mounted generator control system, above-mentioned vehicle-mounted generator control system comprises: the generator that is connected through cable with automobile engine, the engine controller that is connected through two cables with generator, the control panel that is connected through cable with engine controller; It is characterized in that above-mentioned electromagnetic interference control device comprises:
In the following filter at least one: be connected three-phase input filter between generator to the engine controller, be connected RS232 traffic filter between engine controller and the control panel, be connected single-phase output filter between engine controller and the vehicle power, be connected direct current input filter between engine controller and the automobile storage battery, be connected the excitation output filter between engine controller and the generator;
Be used to place the base of above-mentioned filter and above-mentioned engine controller; And
Cover in the antimagnetic shield cover on the base,
Wherein, the total interface place of above-mentioned vehicle-mounted generator control system uses shielding material.
2. a kind of electromagnetic interference control device that is used for vehicle-mounted generator control system according to claim 1 is characterized in that, the shell of above-mentioned antimagnetic shield cover and above-mentioned filter is high magnetic conduction galvanized steel plain sheet.
3. a kind of electromagnetic interference control device that is used for vehicle-mounted generator control system according to claim 2 is characterized in that the thickness of above-mentioned high magnetic conduction galvanized steel plain sheet is 2mm.
4. a kind of electromagnetic interference control device that is used for vehicle-mounted generator control system according to claim 2 is characterized in that, above-mentioned antimagnetic shield cover is provided with the ventilating opening that steel shielding ventilating board is processed.
5. a kind of electromagnetic interference control device that is used for vehicle-mounted generator control system according to claim 1 is characterized in that, above-mentioned antimagnetic shield cover bonding.
6. a kind of electromagnetic interference control device that is used for vehicle-mounted generator control system according to claim 1 is characterized in that, the above-mentioned crust bonding that is connected the cable between generator and the engine controller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101894044A CN101764565B (en) | 2008-12-23 | 2008-12-23 | Electromagnetic interference control device for vehicle-mounted generator control system |
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| CN2008101894044A CN101764565B (en) | 2008-12-23 | 2008-12-23 | Electromagnetic interference control device for vehicle-mounted generator control system |
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| CN101764565A CN101764565A (en) | 2010-06-30 |
| CN101764565B true CN101764565B (en) | 2012-02-15 |
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Families Citing this family (2)
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| CN104135100A (en) * | 2014-07-08 | 2014-11-05 | 江西清华泰豪微电机有限公司 | Method for inhibiting interference sources in silent power generating set |
| CN111474435A (en) * | 2020-04-28 | 2020-07-31 | 中国汽车技术研究中心有限公司 | System and method for testing alternating current charging electromagnetic interference of electric vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1154678A (en) * | 1994-06-10 | 1997-07-16 | 诺思路·格鲁曼公司 | Control mechanism for electric vehicle |
| CN1571247A (en) * | 2003-07-25 | 2005-01-26 | 上海实业交通电器有限公司 | Equipment for suppressing electromagnetic interference of automobile DC motor |
| CN1770973A (en) * | 2004-10-14 | 2006-05-10 | 莱尔德技术股份有限公司 | Aesthetically colored EMI shields and methods related to electromagnetic interference shielding |
| CN201328100Y (en) * | 2008-12-23 | 2009-10-14 | 北京中石伟业技术有限公司 | Electromagnetic interference control device for vehicle generator control system |
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- 2008-12-23 CN CN2008101894044A patent/CN101764565B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1154678A (en) * | 1994-06-10 | 1997-07-16 | 诺思路·格鲁曼公司 | Control mechanism for electric vehicle |
| CN1571247A (en) * | 2003-07-25 | 2005-01-26 | 上海实业交通电器有限公司 | Equipment for suppressing electromagnetic interference of automobile DC motor |
| CN1770973A (en) * | 2004-10-14 | 2006-05-10 | 莱尔德技术股份有限公司 | Aesthetically colored EMI shields and methods related to electromagnetic interference shielding |
| CN201328100Y (en) * | 2008-12-23 | 2009-10-14 | 北京中石伟业技术有限公司 | Electromagnetic interference control device for vehicle generator control system |
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