CN209231424U - The device of electromagnetic compatibility testing is carried out to the parts to be tested - Google Patents
The device of electromagnetic compatibility testing is carried out to the parts to be tested Download PDFInfo
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- CN209231424U CN209231424U CN201821442253.4U CN201821442253U CN209231424U CN 209231424 U CN209231424 U CN 209231424U CN 201821442253 U CN201821442253 U CN 201821442253U CN 209231424 U CN209231424 U CN 209231424U
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Abstract
The utility model discloses the devices that a kind of pair of the parts to be tested carries out electromagnetic compatibility testing, and one of device includes electromagnetic screen, fictitious load, electro-optical signal conversion equipment, photoelectric signal conversion device, monitoring device, antenna and electromagnetic interference measuring apparatus；Antenna, fictitious load and electro-optical signal conversion equipment are set to the inside of electromagnetic screen, and electromagnetic interference measuring apparatus, emission of radio frequency signals device, photoelectric signal conversion device and monitoring device are set to the outside of electromagnetic screen；The parts to be tested, fictitious load are sequentially connected with the first electric signal interface of electro-optical signal conversion equipment by electrical signal transmission line respectively；Second electric signal interface of the first optical signal interface and photoelectric signal conversion device is connected by optical signal transmission line；Monitoring device and the second electric signal interface are connected by electrical signal transmission line.The utility model improves the accuracy to component electromagnetic compatibility test to be measured.
Description
Technical field
The utility model relates to the dresses that measuring technology more particularly to a kind of pair of the parts to be tested carry out electromagnetic compatibility testing
It sets.
Background technique
To meet consumer to the functionality of automobile and driving quality, the requirement that riding comfort is continuously improved, now
Car manufacturer is also continuously improved the electrifing degree of automobile in production, in turn results on automobile electronic device increasingly
More, the communication between electronic device becomes increasingly complex.In order to solve the bottleneck of this restriction Hyundai Motor electronic information development,
Controller local area network (Controller Area Network, CAN) bus is widely used in automobile industry.
With the application of automotive electronics, the Electro Magnetic Compatibility of automobile (Electro Magnetic Compatibility,
EMC) problem also becomes increasingly conspicuous, and since the Electro Magnetic Compatibility of automobile directly influences the safety problem of vehicle, has been subjected to getting over
Carry out more concerns.The electrifing degree of vehicle improves, and the Electro Magnetic Compatibility of components is gradually taken seriously in automobile.Zero
It is simultaneous that the other electromagnetic compatibility testing of component-level needs the applying working condition according to components on automobile to carry out electromagnetism to the components
Compatibility test.Existing electromagnetic compatibility test equipment can generate a degree of electromagnetic interference to components, influence components
Electromagnetic compatibility testing result accuracy.
Utility model content
The utility model embodiment provides a kind of EMC test technology, can reduce simultaneous to the parts to be tested progress electromagnetism
Electromagnetic noise in capacitive test process.
According to the one side of the utility model embodiment, the dress that a kind of pair of the parts to be tested carries out electromagnetic compatibility testing is provided
It sets, which is characterized in that including electromagnetic screen, fictitious load, electro-optical signal conversion equipment, photoelectric signal conversion device, prison
Control device, antenna and electromagnetic interference measuring apparatus；Wherein:
The antenna, the fictitious load and the electro-optical signal conversion equipment are set to the interior of the electromagnetic screen
Portion, the electromagnetic interference measuring apparatus, the photoelectric signal conversion device and the monitoring device are set to the electromagnetic shielding dress
The outside set；
The antenna is connected with the electromagnetic interference measuring apparatus by electrical signal transmission line；
The electro-optical signal conversion equipment includes: the first electric signal interface, electro-optical conversion circuit and the first optical signal interface；
The parts to be tested, the fictitious load pass sequentially through electrical signal transmission line with first electric signal interface and connect；
The photoelectric signal conversion device includes: the second optical signal interface, photoelectric conversion circuit and the second electric signal interface；
First optical signal interface is connect with second optical signal interface by optical signal transmission line；
The monitoring device is connected with second electric signal interface by electrical signal transmission line.
Optionally, the electrical signal transmission line includes controller local area network's CAN bus；The photoelectric signal conversion device
It is provided between the monitoring device and is connected respectively with the photoelectric signal conversion device, the monitoring device by CAN bus
The CAN card connect.
Optionally, in the above-mentioned Installation practice for carrying out electromagnetic compatibility testing to the parts to be tested, the electromagnetic shielding dress
It is set to metallic shielded room, is provided with electromagnetic noise absorbed layer in the electromagnetic screen interior sidewall surface.
Optionally, any of the above-described pair of the parts to be tested carries out in the Installation practice of electromagnetic compatibility testing, and the electromagnetism is made an uproar
Acoustic absorbing layer includes: ferrite and/or electromagnetic wave absorption cotton.
Optionally, any of the above-described pair of the parts to be tested carries out in the Installation practice of electromagnetic compatibility testing, the electromagnetic screen
Device is covered to be provided with the first through hole for supplying the optical signal transmission line to wear and supply the antenna and the electromagnetic interference measuring apparatus
Between the second through-hole for wearing of electrical signal transmission line.
Optionally, any of the above-described pair of the parts to be tested carries out in the Installation practice of electromagnetic compatibility testing, first light
Optical fiber filter or electromagnetic waveguide are additionally provided between signaling interface and second optical signal interface；
The optical signal transmission line passes through the optical fiber filter or electromagnetic waveguide is separately connected the first light letter
Number interface and second optical signal interface；Alternatively, first optical signal interface and the optical fiber filter or the electricity
The connection of magnetic wave conduit, the optical fiber filter or the electromagnetic waveguide and second optical signal interface are passed by optical signal
Defeated line connection；Alternatively, first optical signal interface and the optical fiber filter or the electromagnetic waveguide pass through optical signal
Transmission line connection, the optical fiber filter or the electromagnetic waveguide are connect with second optical signal interface.
Optionally, any of the above-described pair of the parts to be tested carries out in the Installation practice of electromagnetic compatibility testing, the electromagnetic screen
Cover the power supply being additionally provided with inside device to the parts to be tested power supply.
According to the another aspect of the utility model embodiment, what is provided is another to the parts to be tested progress Electro Magnetic Compatibility survey
The device of examination, including electromagnetic screen, fictitious load, electro-optical signal conversion equipment, photoelectric signal conversion device, monitoring dress
It sets, antenna and emission of radio frequency signals device, in which:
The antenna, the fictitious load and the electro-optical signal conversion equipment are set to the interior of the electromagnetic screen
Portion, the emission of radio frequency signals device, the photoelectric signal conversion device and the monitoring device are set to the electromagnetic shielding
The outside of device；
The antenna is connected with the emission of radio frequency signals device by electrical signal transmission line；
The electro-optical signal conversion equipment includes: the first electric signal interface, electro-optical conversion circuit and the first optical signal interface；
The parts to be tested, the fictitious load pass sequentially through electrical signal transmission line with first electric signal interface and connect；
The photoelectric signal conversion device includes: the second optical signal interface, photoelectric conversion circuit and the second electric signal interface；
First optical signal interface is connect with second optical signal interface by optical signal transmission line；
The monitoring device is connected with second electric signal interface by electrical signal transmission line.
Optionally, in the above-mentioned another Installation practice for carrying out electromagnetic compatibility testing to the parts to be tested, the telecommunications
Number transmission line includes controller local area network's CAN bus；It is arranged between the photoelectric signal conversion device and the monitoring device
There is the CAN card being electrically connected respectively with the photoelectric signal conversion device, the monitoring device.
Optionally, in the above-mentioned another Installation practice for carrying out electromagnetic compatibility testing to the parts to be tested, further includes: set
It is placed in the power amplifier of the outside of the electromagnetic screen, the emission of radio frequency signals device, the power amplifier, institute
It states antenna and passes sequentially through electrical signal transmission line connection.
Optionally, described in any of the above-described another Installation practice for carrying out electromagnetic compatibility testing to the parts to be tested
Electromagnetic screen is metallic shielded room, is provided with electromagnetic noise absorbed layer in the electromagnetic screen interior sidewall surface.
Optionally, described in any of the above-described another Installation practice for carrying out electromagnetic compatibility testing to the parts to be tested
Electromagnetic noise absorbed layer includes: ferrite and/or electromagnetic wave absorption cotton.
Optionally, described in any of the above-described another Installation practice for carrying out electromagnetic compatibility testing to the parts to be tested
Electromagnetic screen is provided with the first through hole for supplying the optical signal transmission line to wear and supplies the antenna and the radiofrequency signal
The second through-hole that electrical signal transmission line between emitter is worn.
Optionally, described in any of the above-described another Installation practice for carrying out electromagnetic compatibility testing to the parts to be tested
Optical fiber filter or electromagnetic waveguide are additionally provided between first optical signal interface and second optical signal interface；
The optical signal transmission line passes through the optical fiber filter or electromagnetic waveguide is separately connected the first light letter
Number interface and second optical signal interface；Alternatively, first optical signal interface and the optical fiber filter or the electricity
The connection of magnetic wave conduit, the optical fiber filter or the electromagnetic waveguide and second optical signal interface are passed by optical signal
Defeated line connection；Alternatively, first optical signal interface and the optical fiber filter or the electromagnetic waveguide pass through optical signal
Transmission line connection, the optical fiber filter or the electromagnetic waveguide are connect with second optical signal interface.
Optionally, described in any of the above-described another Installation practice for carrying out electromagnetic compatibility testing to the parts to be tested
The power supply to the parts to be tested power supply is additionally provided with inside electromagnetic screen.
In a kind of the utility model device provided by the above embodiment for carrying out electromagnetic compatibility testing to the parts to be tested,
Antenna, fictitious load and electro-optical signal conversion equipment are set to the inside of electromagnetic screen；By electromagnetic interference measuring apparatus, light
Electrical signal conversion device and monitoring device are set to the outside of electromagnetic screen, and antenna and electromagnetic interference measuring apparatus pass through telecommunications
The connection of number transmission line；The parts to be tested, fictitious load and the first electric signal interface pass sequentially through electrical signal transmission line connection；First light
It is connected between signaling interface and the second optical signal interface by optical signal transmission line；Monitoring device and the second electric signal interface pass through
Electrical signal transmission line connection.Based on the embodiment, monitoring device is set to outside electromagnetic screen, electricity can be effectively isolated
The inside and outside electromagnetic noise of magnetic shielding device reduces during carrying out electromagnetic compatibility test to the parts to be tested,
The electromagnetic noise that monitoring device (such as power supply, clock inside monitoring device etc.) generates is to component electromagnetic emission characteristics to be measured
The influence of the test result of (Electromagnetic Interference, EMI) improves the EMI test knot of the parts to be tested
The accuracy of fruit.
In the utility model another device provided by the above embodiment for carrying out electromagnetic compatibility testing to the parts to be tested
In, emission of radio frequency signals device, photoelectric signal conversion device and monitoring device are set to the outside of electromagnetic screen, by day
Line is connected with emission of radio frequency signals device by electrical signal transmission line；The parts to be tested, fictitious load and the first electric signal interface according to
It is secondary to be connected by electrical signal transmission line；Connected between first optical signal interface and the second optical signal interface by optical signal transmission line
It connects；Monitoring device and the second electric signal interface are connected by electrical signal transmission line.Based on the embodiment, monitoring device is set to
Outside electromagnetic screen, it can be effectively isolated the inside and outside electromagnetic noise of electromagnetic screen, reduce and treating
During surveying component progress electromagnetic compatibility testing, avoids and electromagnetic susceptibility is carried out to the parts to be tested
During (Electromagnetic Susceptibility, EMS) is tested, electromagnetism that component to be tested issues at work
Noise interferes monitoring device, improves the accuracy of the parts to be tested EMS test result.
Detailed description of the invention
The attached drawing for constituting part of specification describes the embodiments of the present invention, and is used for together with description
Explain the principles of the present invention.
The utility model can be more clearly understood according to following detailed description referring to attached drawing, in which:
Fig. 1 is the structural representation of device one embodiment that the utility model carries out electromagnetic compatibility testing to the parts to be tested
Figure；
Fig. 2 is that the utility model shows the structure for device another embodiment that the parts to be tested carries out electromagnetic compatibility testing
It is intended to；
Fig. 3 is that the utility model shows the structure for device another embodiment that the parts to be tested carries out electromagnetic compatibility testing
It is intended to；
Fig. 4 is that the utility model shows the structure for the device further embodiment that the parts to be tested carries out electromagnetic compatibility testing
It is intended to；
Fig. 5 is that the utility model shows the structure for the device a still further embodiment that the parts to be tested carries out electromagnetic compatibility testing
It is intended to.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, below in conjunction with the reality of the utility model
The attached drawing in example is applied, the technical scheme in the embodiment of the utility model is further described in more detail.In the accompanying drawings, from beginning extremely
Same or similar label indicates same or similar element or element with the same or similar functions eventually.Described implementation
Example is the utility model a part of the embodiment, instead of all the embodiments.Below with reference to attached drawing description embodiment be
Illustratively, it is intended to for explaining the utility model, and should not be understood as limiting the present invention.Based on the utility model
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, fall within the protection scope of the utility model.The embodiments of the present invention are described in detail with reference to the accompanying drawing.
In the description of the present embodiment, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown is merely for convenience of description the present embodiment and simplifies description, rather than indication or suggestion meaning
Device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the present embodiment
The limitation of protection scope.Unless specifically stated otherwise, positioned opposite, the digital table of the component otherwise illustrated in these embodiments
Up to the unlimited the scope of the utility model processed of formula and numerical value.
Simultaneously, it should be appreciated that for ease of description, the size of various pieces shown in attached drawing is not according to reality
Proportionate relationship draw.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to this is practical
Novel and its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
In the utility model embodiment, Electro Magnetic Compatibility is that finger, equipment or system meet the requirements in electromagnetic environment
Operation does not generate intolerable electromagnetic disturbance (Electromagnetic to the other equipment in the electromagnetic environment
Disturbance ability) and the energy that the other equipment in the electromagnetic environment are not generated with intolerable electromagnetic disturbance
Power.As a result, Electro Magnetic Compatibility include two aspect: be on the one hand component, equipment or system in normal course of operation to place
For the electromagnetic interference that environment generates no more than certain limit value, which is known as the Electromagnetic Launching characteristic of component, equipment or system；
It on the other hand is that component, equipment or system have a degree of immunity to interference, the property to electromagnetic interference present in the environment of place
It can be known as the electromagnetic susceptibility of component, equipment or system.
It, will be right for testing in terms of two the parts to be tested progress EMI test and EMS in the utility model embodiment
The device that the application carries out electromagnetic compatibility testing to the parts to be tested is illustrated.
Fig. 1 is that the structure of device one embodiment for carrying out electromagnetic compatibility testing to the parts to be tested of the utility model is shown
It is intended to.The device of the present embodiment can be used for carrying out the parts to be tested the EMI test in EMC.It is to be measured in each embodiment of the application
Component can be the components in vehicle, such as battery, motor, motor driver, Vehicular charger, vehicle in new-energy automobile
Carry the components such as DC-DC power source.Referring to Fig.1, the device for carrying out electromagnetic compatibility testing to the parts to be tested of the present embodiment includes
Electromagnetic screen 1, fictitious load 2, electro-optical signal conversion equipment 3, photoelectric signal conversion device 4, monitoring device 5,6 and of antenna
Electromagnetic interference measuring apparatus 7.Wherein, antenna 6, fictitious load 2 and electro-optical signal conversion equipment 3 are set to electromagnetic screen 1
Inside, electromagnetic interference measuring apparatus 7, photoelectric signal conversion device 4 and monitoring device 5 are set to the outside of electromagnetic screen 1.
The parts to be tested 8 is placed in electromagnetic screen 1 when testing.In the present embodiment:
Fictitious load 2 is used for the electric circumstance for providing fictitious load for the parts to be tested 8, simulating the parts to be tested 8.It is surveyed in EMI
In examination, the output signal of the parts to be tested 8 can be transmitted by fictitious load 2, final output is to monitoring device 5, so that monitoring dress
The phenomenon that the parts to be tested 8 carries out EMI test can be monitored by setting 5.
Antenna 6 and electromagnetic interference measuring apparatus 7 are connected by electrical signal transmission line (such as copper wire, copper cable).Antenna 6 is for connecing
Receive the electromagnetic wave generated in 1 inside of electromagnetic screen by the parts to be tested 8.Antenna 6 passes through telecommunications after receiving the electromagnetic interference
Number transmission line reaches the electromagnetic interference measuring apparatus 7 outside the 1 of electromagnetic screen.Electromagnetic interference measuring apparatus 7 is used for receiving
Electromagnetic wave carry out processing analysis and show the intensity of the electromagnetic wave.It can determine portion to be measured according to the intensity of the electromagnetic wave of display
Whether the Electromagnetic Launching characteristic of part 8, which meets the default of the parts to be tested, uses standard.If the intensity of the electromagnetic wave of display is greater than the
One preset value, it is determined that the parts to be tested 8, which does not meet to preset, uses standard；If the intensity of the electromagnetic wave of display is pre- no more than first
If value, it is determined that the parts to be tested 8, which meets to preset, uses standard.Wherein, the first preset value be based on empirically determined numerical value, can
It is preset, and can be adjusted according to demand with type, job requirement etc. based on the parts to be tested.Antenna 6 is circuit and space
Interface device, the electromagnetic wave in electromagnetic screen 1 can be converted into electric signal, EMI test in, which passes through
Electrical signal transmission line is transmitted to electromagnetic interference measuring apparatus 7.In the present embodiment, the type of antenna 6 can be close-coupled biconical antenna
Or combined antenna, it can also be that other types meet the antenna of EMI testing standard, concrete type of the present embodiment to antenna 6
Without limitation.In practical applications, antenna 6 can be set to 1 inside of electromagnetic screen close to the parts to be tested 8 and far from electricity
The position of 1 interior sidewall surface of magnetic shielding device, so that antenna 6 can sufficiently receive the electromagnetic wave of the generation of the parts to be tested 8.
Electro-optical signal conversion equipment 3 includes sequentially connected first electric signal interface, electro-optical conversion circuit and the first light letter
Number interface.Wherein, the first electric signal interface is for connecting electrical signal transmission line, and the first optical signal interface is for connecting optical signal biography
Defeated line (such as optical fiber or optical cable), electro-optical conversion circuit are used to the electric signal that the first electric signal interface receives being converted to light
Signal is transferred to the first optical signal interface, and by the optical signal that the first optical signal interface receives be converted to electric signal transmission to
First electric signal interface.The parts to be tested 8, fictitious load 2 pass sequentially through electrical signal transmission line with the first electric signal interface and connect.
Photoelectric signal conversion device 4 includes: the second optical signal interface, photoelectric conversion circuit and the second electric signal interface, and
It is connected between one optical signal interface and the second optical signal interface by optical signal transmission line.Wherein, the second optical signal interface is used for
Optical signal transmission line is connected, the second electric signal interface is used for for connecting electrical signal transmission line, photoelectric conversion circuit by the second light
The optical signal that signaling interface receives is converted to electric signal transmission to the second electric signal interface, and the second electric signal interface is connect
The electric signal received is converted to optical signal transmission to the second electric signal interface.
Monitoring device 5 is connected with the second electric signal interface by electrical signal transmission line.Monitoring device 5 is used for and the parts to be tested
8 are communicated, and monitor whether the communication process is normal, can be with so that it is determined that whether the communication function of the parts to be tested 8 is normal
Communication abnormality event is recorded.In practical applications, monitoring device 5 can be as personal computer (personal
Computer, PC) or other equipment realizations with communication function.
In the embodiment of the present application, monitoring device 5 can be set to the outside of electromagnetic screen 1, electromagnetic screen 1
The monitoring device 5 of internal the parts to be tested 8 and external setting can pass through electro-optical signal conversion equipment 3, optical signal transmission line, photoelectricity
Chromacoder 4 is communicatively coupled.Photoelectric signal conversion device 4 is set to the outside of electromagnetic screen 1, above-mentioned electricity
The optical signal of the first optical signal interface output in optical signal conversion apparatus 3 is transmitted to photosignal by optical signal transmission line and turns
The second optical signal interface in changing device 4, and be converted into electric signal through the photoelectric conversion circuit in photoelectric signal conversion device 4 and pass
The second electric signal interface is transported to, is spread out of again through electrical signal transmission line and the device 5 that is monitored receives.In the embodiment of the present application, in electricity
Magnetic shielding device 1 it is inside and outside between using optical signal transmission line carry out optical signal transmission, to such as radio, motor
Or the electromagnetic interference of other adjacent cables has biggish impedance, it is possible to prevente effectively from shadow of the environmental electromagnetic wave to optical signal transmission
It rings.In addition, since the transmission medium of optical signal transmission line is glass, so that the optical power of transmission optical signal is transmitted more than km
The loss of distance is minimum, makes optical signal transmission almost free of losses；Also, it is per second relative to plain conductor electric signal transmission
The rate of 1.54MHZ, the operating rate of fiber optic network have reached 2.5GB per second, and signal transmits faster.
Since monitoring device can generate electromagnetic interference simultaneously during the work time, the electromagnetism to avoid monitoring device from generating is done
It disturbs in the EMI test to the parts to be tested and generates interference, the test result inaccuracy to the parts to be tested is caused, on the utility model
It states in embodiment, antenna, fictitious load and electro-optical signal conversion equipment is set to the inside of electromagnetic screen；Electromagnetism is done
The outside that measuring instrument, photoelectric signal conversion device and monitoring device are set to electromagnetic screen is disturbed, antenna and electromagnetic interference are surveyed
Instrument is measured to connect by electrical signal transmission line；The parts to be tested, fictitious load and the first electric signal interface pass sequentially through electric signal transmission
Line connection；It is connected between first optical signal interface and the second optical signal interface by optical signal transmission line；Monitoring device and second
Electric signal interface is connected by electrical signal transmission line.Based on the embodiment, monitoring device is set to outside electromagnetic screen,
It can be effectively isolated the inside and outside electromagnetic noise of electromagnetic screen, reduce and EMI test is being carried out to the parts to be tested
During, the electromagnetic noise that monitoring device (such as power supply, clock inside monitoring device etc.) generates is to component electromagnetic to be measured
The influence of the test result of emission characteristics improves the accuracy of the EMI test result of the parts to be tested.
Fig. 2 is the structure that another embodiment of the device of electromagnetic compatibility testing is carried out to the parts to be tested of the utility model
Schematic diagram.The device of the present embodiment can be used for carrying out the parts to be tested the EMI test in EMC.Referring to fig. 2, implement with shown in Fig. 1
Example is compared, and in wherein some embodiments, above electrical signal transmission line can be CAN bus.Correspondingly, in the embodiment,
It is additionally provided between photoelectric signal conversion device 4 and monitoring device 5 logical with photoelectric signal conversion device 4, monitoring device 5 respectively
The CAN card 9 of CAN bus connection is crossed, to realize the CAN communication between monitoring device 5 and the parts to be tested 8.First electric signal interface
It is CAN interface with the second electric signal interface；Electro-optical conversion circuit is specifically used for turning the CAN signal transmitted in CAN bus
Optical signal is changed to transmit by optical signal transmission line, photoelectric conversion circuit is for converting optical signals to CAN signal to pass through
CAN bus transmission.In the present embodiment, CAN card 9 is provided with the interface and CAN interface of connection monitoring device 5, can pass through connection
The interface of monitoring device 5 be plugged to monitoring device 5, the second electric signal interface is connected to by CAN interface, monitoring device 5 with
Controller, such as entire car controller, power-supply controller of electric etc. on the combination analog vehicle of CAN card 9 realize that EMI was tested
The CAN that can be realized between the parts to be tested 8 and monitoring device 5 in journey without connecting vehicle is communicated, and monitors the parts to be tested in real time
Whether 8 communication is normal.
In wherein some embodiments, electromagnetic screen 1 can be metallic shielded room, in electromagnetic screen 1
One layer of electromagnetic noise absorbed layer (not shown) can be set on the wall surface of side, for absorbing the electricity in electromagnetic screen 1
Magnetic noise.In the present embodiment, it is provided with electromagnetic noise absorbed layer on the wall surface of 1 inside of electromagnetic screen, can effectively be inhaled
1 inside of electromagnetic screen and the electromagnetic noise in external environment are received, further decreases or even avoids outside electromagnetic screen 1
The electromagnetic interference of environment is to the environmental effects inside electromagnetic screen 1.To the gold of electromagnetic screen 1 in the present embodiment
Belong to material without limitation.
In wherein some optional examples, rubber-ferrite layer may include ferrite and/or electromagnetic wave absorption cotton.This implementation
In example, rubber-ferrite layer can be laid in ground, side wall surface, the top surface of 1 inside of electromagnetic screen and be used to absorb electromagnetism
Noise, the electromagnetic noise for avoiding the parts to be tested 8 from generating generate anti-in the ground of 1 inside of electromagnetic screen, side wall surface, top surface
It is detected again by antenna 6 after penetrating, influences the accuracy of EMI test result.Wherein, ferrite is mainly in 1GHZ electromagnetism below
Noisy frequency range plays the role of inhaling wave, and electromagnetic wave absorption cotton, which mainly plays in 1GHZ or more electromagnetic noise frequency range, inhales wave work
With.In the present embodiment, the ground of 1 inside of electromagnetic screen is laid on any structure type to ferrite/electromagnetic wave absorption cotton
Face, side wall surface, top surface without limitation, can be the material layer of coating, be also possible to be layered on each face in electromagnetic screen 1
Plate structure etc..
In wherein some embodiments, electromagnetic screen 1 is provided with the first through hole worn for optical signal transmission line
And for the second through-hole that the electrical signal transmission line between antenna 6 and electromagnetic interference measuring apparatus 7 is worn, optical signal transmission line passes through the
One through-hole connects electro-optical signal conversion equipment 3 and photoelectric signal conversion device 4；Electrical signal transmission line passes through the second through-hole and connects day
Line 6 and electromagnetic interference measuring apparatus 7.
In addition, can also be arranged between the first optical signal interface and the second optical signal interface in further embodiment
There are optical fiber filter or electromagnetic waveguide.Optical signal transmission line passes through optical fiber filter or electromagnetic waveguide and is separately connected the
One optical signal interface and the second optical signal interface.Alternatively, optical fiber filter or electromagnetic waveguide setting connect in the first optical signal
Mouthful place, the first optical signal interface and optical fiber filter perhaps electromagnetic waveguide connect optical fiber filter or electromagnetic waveguide and
Second optical signal interface is connected by optical signal transmission line.Alternatively, optical fiber filter or electromagnetic waveguide are arranged in the second light
At signaling interface, the first optical signal interface is connect with optical fiber filter or electromagnetic waveguide by optical signal transmission line, optical fiber
Filter or electromagnetic waveguide are connect with the second optical signal interface.
In the present embodiment, by between the first optical signal interface and the second optical signal interface or the first optical signal connects
Optical fiber filter or electromagnetic waveguide are set at mouthful or at the second optical signal interface, it can be to being passed in optical signal transmission line
The signal of other wavelength outside defeated signal of communication wavelength is filtered, to filter out electromagnetic noise, further decreases electromagnetism
Influence of the noise to the EMI test result of the parts to be tested 8.
In addition, being additionally provided with the electricity for being powered to the parts to be tested 8 inside electromagnetic screen 1 referring back to Fig. 2
Source 10.The power supply 10 can be the power supply of fixed output electric current, output voltage, be also possible to export that electric current, output voltage is adjustable
Power supply.In the present embodiment without limitation to the specific type of power supply 10.
The process for carrying out EMI test to the parts to be tested based on above-mentioned embodiment illustrated in fig. 2 is as follows:
Before carrying out EMI test and starting, confirm whether the communication function of the parts to be tested 8 itself is normal.It is specific as follows: not connect
Optical signal conversion equipment 3 and photoelectric signal conversion device 4, monitoring device (such as PC) 5 and CAN card are connected (such as grafting
Or pass through signal transmssion line), fictitious load 2 is directly connect by CAN bus with CAN card 9, carries out electromagnetism to the parts to be tested 8
Remaining part in the device of compatibility test is connected according to mode shown in Fig. 2, and can confirmation monitoring device 5 with the parts to be tested 8
It establishes and communicates to connect and work normally；If monitoring device 5 can be established with the parts to be tested 8 and communicate to connect and work normally, really
The communication function for recognizing the parts to be tested 8 itself is normal；
After confirming that the communication function of the parts to be tested 8 itself is normal, according to the conversion equipment of mode incoming light signal shown in Fig. 23
With photoelectric signal conversion device 4, reaffirms that can monitoring device 5 be established with the parts to be tested 8 and communicate to connect and work normally；
If confirming after incoming light signal conversion equipment 3 and photoelectric signal conversion device 4, monitoring device 5 is built with the parts to be tested 8
It is vertical to communicate to connect and work normally, then start to carry out EMI test to the parts to be tested 8: power supply output being made to meet EMI test request
Current value and/voltage value, the parts to be tested 8 can generate electromagnetic wave, form electromagnetic interference, which can be full of entire electromagnetic screen
Cover the inner space of device 1；Antenna 6 receives the electromagnetic wave that the parts to be tested 8 generates, and by the electromagnetic wave signal through electric signal transmission
Line is transmitted to the electromagnetic interference measuring apparatus 7 outside electromagnetic screen 1, measures the electromagnetic wave signal by electromagnetic interference measuring apparatus 7
Intensity value and show measurement result.According to the intensity value of the electromagnetic wave signal, can Electromagnetic Launching characteristic to the parts to be tested 8 into
Row evaluation.If the intensity value of the electromagnetic wave signal is not more than the first preset value, the parts to be tested 8 meets EMI standard；Otherwise, if
The intensity value of the electromagnetic wave signal is greater than the first preset value, then the parts to be tested 8 does not meet EMI standard.
Fig. 3 is the structure that another embodiment of the device of electromagnetic compatibility testing is carried out to the parts to be tested of the utility model
Schematic diagram.The device of the present embodiment can be used for carrying out the parts to be tested the EMS test in EMC.In each embodiment of the application to
Surveying component can be the components in vehicle, for example, battery in new-energy automobile, motor, motor driver, Vehicular charger,
The components such as vehicle-mounted DC-DC power source.Referring to Fig. 3, the device packet that electromagnetic compatibility testing is carried out to the parts to be tested of the present embodiment
Include electromagnetic screen 1, fictitious load 2, electro-optical signal conversion equipment 3, photoelectric signal conversion device 4, monitoring device 5, antenna 6
With emission of radio frequency signals device 11, wherein antenna 6, fictitious load 2 and electro-optical signal conversion equipment 3 are set to electromagnetic shielding dress
1 inside is set, emission of radio frequency signals device 11, photoelectric signal conversion device 4 and monitoring device 5 are set to electromagnetic screen 1
Outside.In the present embodiment:
Fictitious load 2 is used for the electric circumstance for providing fictitious load for the parts to be tested 8, simulating the parts to be tested 8.It is surveyed in EMS
In examination, the output signal of the parts to be tested 8 can be transmitted by fictitious load 2, final output is to monitoring device 5, so that monitoring dress
The phenomenon that the parts to be tested 8 carries out EMS test can be monitored by setting 5.
Antenna 6 and emission of radio frequency signals device 11 are connected by electrical signal transmission line (such as copper wire, copper cable, CAN bus etc.)
It connects.In the present embodiment, antenna 6 is used to receive the radiofrequency signal of the different frequency of the generation of emission of radio frequency signals device 11, and should
Space inside emission of radio frequency signals to electromagnetic screen 1.By judging the communication between monitoring device 5 and the parts to be tested 8
It is whether normal to judge whether the parts to be tested 8 meets the requirements under the radiofrequency signal interference of a certain frequency.If in a certain frequency
Radiofrequency signal interference under, the parts to be tested 8 and monitoring device 5 are unable to normal communication, then illustrate dry in the radiofrequency signal of the frequency
Lower the parts to be tested 8 is disturbed not meet using standard；If the space inside electromagnetic screen 1 is applied with the radiofrequency signal of the frequency
The parts to be tested 8 and monitoring device 5 are able to maintain normal communication after interference, then illustrate to be measured under the radiofrequency signal interference of the frequency
Component 8 meets using standard.Antenna 6 is the interface device in circuit and space, can be by the radio frequency of emission of radio frequency signals device 11
Signal is converted into electromagnetic wave signal and carries out electromagnetic interference to equipment therein in electromagnetic screen 1, should in EMS test
Radiofrequency signal is transmitted to antenna 6 by electrical signal transmission line.In the present embodiment, the type of antenna 6 can be close-coupled bipyramid day
Line or combined antenna can also be that other types meet the type of EMS testing standard, concrete kind of the present embodiment to antenna 6
Type is without limitation.
Electro-optical signal conversion equipment 3 includes sequentially connected first electric signal interface, electro-optical conversion circuit and the first light letter
Number interface.Wherein, the first electric signal interface is for connecting electrical signal transmission line, and the first optical signal interface is for connecting optical signal biography
Defeated line (such as optical fiber or optical cable), electro-optical conversion circuit are used to the electric signal that the first electric signal interface receives being converted to light
Signal is transferred to the first optical signal interface, and by the optical signal that the first optical signal interface receives be converted to electric signal transmission to
First electric signal interface.The parts to be tested 8, fictitious load 2 pass sequentially through electrical signal transmission line with the first electric signal interface and connect.
Photoelectric signal conversion device 4 includes: the second optical signal interface, photoelectric conversion circuit and the second electric signal interface, and
It is connected between one optical signal interface and the second optical signal interface by optical signal transmission line.Wherein, the second optical signal interface is used for
Optical signal transmission line is connected, the second electric signal interface is used for for connecting electrical signal transmission line, photoelectric conversion circuit by the second light
The optical signal that signaling interface receives is converted to electric signal transmission to the second electric signal interface, and the second electric signal interface is connect
The electric signal received is converted to optical signal transmission to the second electric signal interface.
Monitoring device 5 is connected with the second electric signal interface by electrical signal transmission line.Monitoring device 5 is used for and the parts to be tested
8 are communicated, and monitor whether the communication process is normal, can be with so that it is determined that whether the communication function of the parts to be tested 8 is normal
Communication abnormality event is recorded.In practical applications, monitoring device 5 can be as personal computer (personal
Computer, PC) or other equipment realizations with communication function.
In the embodiment of the present application, monitoring device 5 can be set to the outside of electromagnetic screen 1, electromagnetic screen 1
The monitoring device 5 of internal the parts to be tested 8 and external setting can pass through electro-optical signal conversion equipment 3, optical signal transmission line, photoelectricity
Chromacoder 4 is communicatively coupled.Photoelectric signal conversion device 4 is set to the outside of electromagnetic screen 1, above-mentioned electricity
The optical signal of the first optical signal interface output in optical signal conversion apparatus 3 is transmitted to photosignal by optical signal transmission line and turns
The second optical signal interface in changing device 4, and be converted into electric signal through the photoelectric conversion circuit in photoelectric signal conversion device 4 and pass
The second electric signal interface is transported to, is spread out of again through electrical signal transmission line and the device 5 that is monitored receives.In the embodiment of the present application, in electricity
Magnetic shielding device 1 it is inside and outside between using optical signal transmission line carry out optical signal transmission, to such as radio, motor
Or the electromagnetic interference of other adjacent cables has biggish impedance, it is possible to prevente effectively from shadow of the environmental electromagnetic wave to optical signal transmission
It rings.In addition, since the transmission medium of optical signal transmission line is glass, so that the optical power of transmission optical signal is transmitted more than km
The loss of distance is minimum, makes optical signal transmission almost free of losses；Also, it is per second relative to plain conductor electric signal transmission
The rate of 1.54MHZ, the operating rate of fiber optic network have reached 2.5GB per second, and signal transmits faster.
Since monitoring device can generate electromagnetic interference simultaneously during the work time, the electromagnetism to avoid monitoring device from generating is done
It disturbs in the EMS test to the parts to be tested and generates interference, the test result inaccuracy to the parts to be tested is caused, on the utility model
It states in embodiment, emission of radio frequency signals device, photoelectric signal conversion device and monitoring device is set to electromagnetic screen
Outside connects antenna with emission of radio frequency signals device by electrical signal transmission line；The parts to be tested, fictitious load and the first telecommunications
Number interface passes sequentially through electrical signal transmission line connection；It is passed between first optical signal interface and the second optical signal interface by optical signal
Defeated line connection；Monitoring device and the second electric signal interface are connected by electrical signal transmission line.Based on the embodiment, by monitoring device
It is set to outside electromagnetic screen, the inside and outside electromagnetic noise of electromagnetic screen can be effectively isolated, reduced
During carrying out electromagnetic compatibility testing to the parts to be tested, the mistake that electromagnetic susceptibility test is carried out to the parts to be tested is avoided
Cheng Zhong, the electromagnetic noise that component to be tested issues at work interfere monitoring device, improve the parts to be tested EMS test
As a result accuracy.
Fig. 4 is the structure of the device further embodiment that electromagnetic compatibility testing is carried out to the parts to be tested of the utility model
Schematic diagram.The device of the present embodiment can be used for carrying out the parts to be tested the EMS test in EMC.Referring to fig. 4, implement with shown in Fig. 3
Example is compared, and in some embodiments, above electrical signal transmission line can be CAN bus.Correspondingly, in the embodiment, photoelectricity
It is additionally provided between chromacoder 4 and monitoring device 5 and passes through CAN with photoelectric signal conversion device 4, monitoring device 5 respectively
The CAN card 9 of bus connection, to realize the CAN communication between monitoring device 5 and the parts to be tested 8.First electric signal interface and
Two electric signal interfaces are CAN interface；Electro-optical conversion circuit is specifically used for being converted to the CAN signal transmitted in CAN bus
Optical signal by optical signal transmission line to be transmitted, and photoelectric conversion circuit is for converting optical signals to CAN signal with total by CAN
Line transmission.
In the present embodiment, CAN card 9 is provided with the interface and CAN interface of connection monitoring device 5, can pass through the prison of connection
The interface of control device 5 is plugged to monitoring device 5, is connected to the second electric signal interface, monitoring device 5 and CAN card by CAN interface
Controller, such as entire car controller, power-supply controller of electric etc. on 9 combination analog vehicle are realized and are not necessarily in EMS test process
The CAN communication between the parts to be tested 8 and monitoring device 5 can be realized in connection vehicle, and the communication for monitoring the parts to be tested 8 in real time is
It is no normal.
In addition, referring back to Fig. 4, in the device further embodiment for carrying out electromagnetic compatibility testing to the parts to be tested, also
It may include: the power amplifier 12 for being set to the outside of electromagnetic screen, emission of radio frequency signals device 11, power amplifier
12, antenna 6 passes sequentially through electrical signal transmission line connection.What power amplifier 12 was used to emit emission of radio frequency signals device 11
Radiofrequency signal carries out power amplification, then amplified radiofrequency signal is transmitted through electrical signal transmission line (such as copper wire or copper cable)
Antenna 6 in electromagnetic screen 1 applies electromagnetic interference to 1 internal environment of electromagnetic screen.
In wherein some embodiments, electromagnetic screen 1 can be metallic shielded room, in electromagnetic screen 1
One layer of electromagnetic noise absorbed layer (not shown) can be set on the wall surface of side, for absorbing the electricity in electromagnetic screen 1
Magnetic noise.In the present embodiment, it is provided with electromagnetic noise absorbed layer on the wall surface of 1 inside of electromagnetic screen, can effectively be inhaled
1 inside of electromagnetic screen and the electromagnetic noise in external environment are received, further decreases or even avoids outside electromagnetic screen 1
The electromagnetic interference of environment is to the environmental effects inside electromagnetic screen 1.To the gold of electromagnetic screen 1 in the present embodiment
Belong to material without limitation.
In wherein some optional examples, rubber-ferrite layer may include ferrite and/or electromagnetic wave absorption cotton.This implementation
In example, rubber-ferrite layer can be laid in ground, side wall surface, the top surface of 1 inside of electromagnetic screen and be used to absorb electromagnetism
Noise, the electromagnetic noise for avoiding the parts to be tested 8 from generating generate anti-in the ground of 1 inside of electromagnetic screen, side wall surface, top surface
It is detected again by antenna 6 after penetrating, influences the accuracy of EMI test result.Wherein, ferrite is mainly in 1GHZ electromagnetism below
Noisy frequency range plays the role of inhaling wave, and electromagnetic wave absorption cotton, which mainly plays in 1GHZ or more electromagnetic noise frequency range, inhales wave work
With.In the present embodiment, the ground of 1 inside of electromagnetic screen is laid on any structure type to ferrite/electromagnetic wave absorption cotton
Face, side wall surface, top surface without limitation, can be the material layer of coating, be also possible to be layered on each face in electromagnetic screen 1
Plate structure etc..
In wherein some embodiments, electromagnetic screen 1 is provided with the first through hole worn for optical signal transmission line
And for the second through-hole that the electrical signal transmission line between antenna 6 and electromagnetic interference measuring apparatus 7 is worn, optical signal transmission line passes through the
One through-hole connects electro-optical signal conversion equipment 3 and photoelectric signal conversion device 4；Electrical signal transmission line passes through the second through-hole and connects day
Line 6 and electromagnetic interference measuring apparatus 7.
In addition, can also be arranged between the first optical signal interface and the second optical signal interface in further embodiment
There are optical fiber filter or electromagnetic waveguide.Optical signal transmission line passes through optical fiber filter or electromagnetic waveguide and is separately connected the
One optical signal interface and the second optical signal interface.Alternatively, optical fiber filter or electromagnetic waveguide setting connect in the first optical signal
Mouthful place, the first optical signal interface and optical fiber filter perhaps electromagnetic waveguide connect optical fiber filter or electromagnetic waveguide and
Second optical signal interface is connected by optical signal transmission line.Alternatively, optical fiber filter or electromagnetic waveguide are arranged in the second light
At signaling interface, the first optical signal interface is connect with optical fiber filter or electromagnetic waveguide by optical signal transmission line, optical fiber
Filter or electromagnetic waveguide are connect with the second optical signal interface.
In the present embodiment, by between the first optical signal interface and the second optical signal interface or the first optical signal connects
Optical fiber filter or electromagnetic waveguide are set at mouthful or at the second optical signal interface, it can be to being passed in optical signal transmission line
The signal of other wavelength outside defeated signal of communication wavelength is filtered, to filter out electromagnetic noise, further decreases electromagnetism
Influence of the noise to the EMI test result of the parts to be tested 8.
In addition, being additionally provided with the electricity for being powered to the parts to be tested 8 inside electromagnetic screen 1 referring back to Fig. 2
Source 10.The power supply 10 can be the power supply of fixed output electric current, output voltage, be also possible to export that electric current, output voltage is adjustable
Power supply.In the present embodiment without limitation to the specific type of power supply 10.
The process for carrying out EMS test to the parts to be tested based on above-mentioned embodiment illustrated in fig. 4 is as follows:
Before carrying out EMI test and starting, confirm whether the communication function of the parts to be tested 8 itself is normal.It is specific as follows: not connect
Optical signal conversion equipment 3 and photoelectric signal conversion device 4, monitoring device (such as PC) 5 and CAN card are connected (such as grafting
Or pass through signal transmssion line), fictitious load 2 is directly connect by CAN bus with CAN card 9, carries out electromagnetism to the parts to be tested 8
Remaining part in the device of compatibility test is connected according to mode shown in Fig. 4, and can confirmation monitoring device 5 with the parts to be tested 8
It establishes and communicates to connect and work normally；If monitoring device 5 can be established with the parts to be tested 8 and communicate to connect and work normally, really
The communication function for recognizing the parts to be tested 8 itself is normal；
After confirming that the communication function of the parts to be tested 8 itself is normal, according to the conversion equipment of mode incoming light signal shown in Fig. 43
With photoelectric signal conversion device 4, reaffirms that can monitoring device 5 be established with the parts to be tested 8 and communicate to connect and work normally；
If confirming after incoming light signal conversion equipment 3 and photoelectric signal conversion device 4, monitoring device 5 is built with the parts to be tested 8
It is vertical to communicate to connect and work normally, start to carry out EMS test to the parts to be tested 8: be generated by emission of radio frequency signals device 11
Radiofrequency signal within the scope of certain frequency (such as in 200~3000MHz frequency range), the radiofrequency signal pass through power amplification
Device 12 carries out power amplification, is transmitted to the antenna 6 in electromagnetic screen 1 through electrical signal transmission line, antenna 6 generates electromagnetic wave letter
Number carry out electromagnetic interference；It is monitored between the parts to be tested 8 and monitoring device 5 under the influence of the electromagnetic interference by monitoring device 5
It can keep communicating to connect and working normally.If communication between the parts to be tested 8 and monitoring device 5 occur significantly decaying or
The phenomenon that person is interrupted then illustrates that the parts to be tested 8 does not meet EMS under the electromagnetic interference of the intensity and uses standard；If the parts to be tested
Communication between 8 and monitoring device 5 is normal unaffected or occurs not influencing the slight fading of communication quality, then illustrates to be measured
Component 8 meets EMS under the electromagnetic interference of the intensity and uses standard.According to test result to the electromagnetic susceptibility of the parts to be tested 8
It is evaluated.
Fig. 5 is the structure of the device a still further embodiment that electromagnetic compatibility testing is carried out to the parts to be tested of the utility model
Schematic diagram.The device includes the component in above-mentioned Fig. 1-embodiment illustrated in fig. 4, both can be used for carrying out EMS to the parts to be tested
Test can be used for carrying out the parts to be tested 8 EMI test, and related place refers to above-described embodiment, and details are not described herein again.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with its
The difference of its embodiment, the same or similar part cross-reference between each embodiment.
Description of the utility model is given for the purpose of illustration and description, and is not that exhaustively or incite somebody to action this
Utility model is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.
Embodiment was chosen and described in order to better illustrate the principle and practical application of the utility model, and makes the common skill of this field
Art personnel it will be appreciated that the utility model to designing various embodiments suitable for specific applications with various modifications.
Claims (15)
1. the device that a kind of pair of the parts to be tested carries out electromagnetic compatibility testing, which is characterized in that including electromagnetic screen, simulation
Load, electro-optical signal conversion equipment, photoelectric signal conversion device, monitoring device, antenna and electromagnetic interference measuring apparatus；Wherein:
The antenna, the fictitious load and the electro-optical signal conversion equipment are set to the inside of the electromagnetic screen,
The electromagnetic interference measuring apparatus, the photoelectric signal conversion device and the monitoring device are set to the electromagnetic screen
It is external；
The antenna is connected with the electromagnetic interference measuring apparatus by electrical signal transmission line；
The electro-optical signal conversion equipment includes: the first electric signal interface, electro-optical conversion circuit and the first optical signal interface；It is described
The parts to be tested, the fictitious load pass sequentially through electrical signal transmission line with first electric signal interface and connect；
The photoelectric signal conversion device includes: the second optical signal interface, photoelectric conversion circuit and the second electric signal interface；It is described
First optical signal interface is connect with second optical signal interface by optical signal transmission line；
The monitoring device is connected with second electric signal interface by electrical signal transmission line.
2. the apparatus according to claim 1, which is characterized in that the electrical signal transmission line includes controller local area network
CAN bus；It is provided between the photoelectric signal conversion device and the monitoring device and is filled respectively with the photoelectric signal transformation
It sets, the CAN card that the monitoring device is connected by CAN bus.
3. the apparatus of claim 2, which is characterized in that the electromagnetic screen is metallic shielded room, the electricity
Electromagnetic noise absorbed layer is provided in magnetic shielding device interior sidewall surface.
4. device according to claim 3, which is characterized in that the electromagnetic noise absorbed layer includes: ferrite and/or electricity
Magnetic wave cotton.
5. device according to claim 1 to 4, which is characterized in that the electromagnetic screen is provided with for the light
The first through hole and worn for the electrical signal transmission line between the antenna and the electromagnetic interference measuring apparatus that signal transmssion line is worn
If the second through-hole.
6. device according to claim 1 to 4, which is characterized in that first optical signal interface and second light
Optical fiber filter or electromagnetic waveguide are additionally provided between signaling interface；
The optical signal transmission line passes through the optical fiber filter or electromagnetic waveguide is separately connected first optical signal and connects
Mouth and second optical signal interface；Alternatively, first optical signal interface and the optical fiber filter or the electromagnetic wave
Conduit connection, the optical fiber filter or the electromagnetic waveguide and second optical signal interface pass through optical signal transmission line
Connection；Alternatively, first optical signal interface and the optical fiber filter or the electromagnetic waveguide pass through optical signal transmission
Line connection, the optical fiber filter or the electromagnetic waveguide are connect with second optical signal interface.
7. device according to claim 1 to 4, which is characterized in that be additionally provided with inside the electromagnetic screen pair
The power supply of the parts to be tested power supply.
8. the device that a kind of pair of the parts to be tested carries out electromagnetic compatibility testing, which is characterized in that including electromagnetic screen, simulation
Load, electro-optical signal conversion equipment, photoelectric signal conversion device, monitoring device, antenna and emission of radio frequency signals device, in which:
The antenna, the fictitious load and the electro-optical signal conversion equipment are set to the inside of the electromagnetic screen,
The emission of radio frequency signals device, the photoelectric signal conversion device and the monitoring device are set to the electromagnetic screen
Outside；
The antenna is connected with the emission of radio frequency signals device by electrical signal transmission line；
The electro-optical signal conversion equipment includes: the first electric signal interface, electro-optical conversion circuit and the first optical signal interface；It is described
The parts to be tested, the fictitious load pass sequentially through electrical signal transmission line with first electric signal interface and connect；
The photoelectric signal conversion device includes: the second optical signal interface, photoelectric conversion circuit and the second electric signal interface；It is described
First optical signal interface is connect with second optical signal interface by optical signal transmission line；
The monitoring device is connected with second electric signal interface by electrical signal transmission line.
9. device according to claim 8, which is characterized in that the electrical signal transmission line includes controller local area network
CAN bus；It is provided between the photoelectric signal conversion device and the monitoring device and is filled respectively with the photoelectric signal transformation
It sets, the CAN card of monitoring device electrical connection.
10. device according to claim 9, which is characterized in that further include: it is set to the outside of the electromagnetic screen
Power amplifier, the emission of radio frequency signals device, the power amplifier, the antenna pass sequentially through electrical signal transmission line
Connection.
11. device according to claim 8, which is characterized in that the electromagnetic screen is metallic shielded room, the electricity
Electromagnetic noise absorbed layer is provided in magnetic shielding device interior sidewall surface.
12. device according to claim 11, which is characterized in that the electromagnetic noise absorbed layer include: ferrite and/or
Electromagnetic wave absorption cotton.
13. according to any device of claim 8-12, which is characterized in that the electromagnetic screen is provided with described in confession
The first through hole and supply the electric signal transmission between the antenna and the emission of radio frequency signals device that optical signal transmission line is worn
The second through-hole that line is worn.
14. according to any device of claim 8-12, which is characterized in that first optical signal interface and described second
Optical fiber filter or electromagnetic waveguide are additionally provided between optical signal interface；
The optical signal transmission line passes through the optical fiber filter or electromagnetic waveguide is separately connected first optical signal and connects
Mouth and second optical signal interface；Alternatively, first optical signal interface and the optical fiber filter or the electromagnetic wave
Conduit connection, the optical fiber filter or the electromagnetic waveguide and second optical signal interface pass through optical signal transmission line
Connection；Alternatively, first optical signal interface and the optical fiber filter or the electromagnetic waveguide pass through optical signal transmission
Line connection, the optical fiber filter or the electromagnetic waveguide are connect with second optical signal interface.
15. according to any device of claim 8-12, which is characterized in that be additionally provided with inside the electromagnetic screen
To the power supply of the parts to be tested power supply.
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| CN201821442253.4U CN209231424U (en) | 2018-09-04 | 2018-09-04 | The device of electromagnetic compatibility testing is carried out to the parts to be tested |
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| CN111766454A (en) * | 2020-07-31 | 2020-10-13 | 重庆长安新能源汽车科技有限公司 | Electromagnetic compatibility testing system of electric automobile battery management system |
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| CN112147428A (en) * | 2019-12-26 | 2020-12-29 | 安波福电子(苏州)有限公司 | Electromagnetic compatibility testing system and method |
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| CN112804025A (en) * | 2019-11-14 | 2021-05-14 | Oppo广东移动通信有限公司 | Electromagnetic shielding room and communication system |
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