CN103592543A - Testing device for instantaneous state conducted emission of electronic and electrical device of automobile - Google Patents
Testing device for instantaneous state conducted emission of electronic and electrical device of automobile Download PDFInfo
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- CN103592543A CN103592543A CN201310585752.4A CN201310585752A CN103592543A CN 103592543 A CN103592543 A CN 103592543A CN 201310585752 A CN201310585752 A CN 201310585752A CN 103592543 A CN103592543 A CN 103592543A
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Abstract
The invention provides a testing device for instantaneous state conducted emission of an electronic and electrical device of an automobile, and belongs to the technical field of automobiles. The testing device solves the problems that in the prior art, testing on instantaneous state conducted emission of the electronic and electrical device wastes time and labor, and is low in working efficiency and high in error rate. The testing device comprises a controller, a power source, a first switch set and a voltage probe. The input end of the first switch set is connected with one end of the power source. The input end of the voltage probe is connected with the output end of the first switch set and one end, used for being connected with the tested electronic and electrical device, of the power source; the output end of the voltage probe is connected with the input end of the controller. The control end of the first switch set is connected with the output end of the controller; the input end of the controller is further connected with an operation interface; the output end of the controller is further connected with a display screen. By means of the testing device, the voltage instantaneous state emission value of the electronic and electrical device used on the automobile can be tested automatically, so that whether electromagnetic emission meets the requirement or not is known. The testing device is high in working efficiency and low in error rate.
Description
Technical field
The invention belongs to automobile technical field, relate to a kind of automotive electronics electrical equipment transient state conduction transmission test set.
Background technology
Nowadays on vehicle, the quantity of electronic electric equipment is more and more, so the residing electromagnetic environment of vehicle is also day by day complicated.If the Electromagnetic Launching of the electronic electric equipment on car is not limited, probably appear at a certain disabler of a certain electronic electric equipment in Vehicle Driving Cycle process, when serious, may there is security incident.Only have the Electromagnetic Launching of the electronic electric equipment on the car to be limited within the specific limits, other electronic electric equipments on car just can be in the comparatively safe working environment of electromagnetism.So before vehicle listing, the electronic electric equipment on car is carried out to transient state conduction transmission test is necessary very much.Transient state conduction transmitting refers to that tested equipment is being switched on or switched off moment, the glitch signal producing by power lead.
To the transient state conduction transmission test of electronic electric equipment on vehicle, be all generally the switch on and off situation that first sets electronic electric equipment at present, then use oscillograph or waveform acquisition equipment in the voltage transient transmitting value of manual recorded electronic electrical equipment of the moment of switch on and off, finally by this voltage transient transmitting value of artificial judgment, whether meet standard-required again.Voltage transient transmitting value meets standard just can be turned down the electromagnetism that electronic electric equipment produces and meet standard, otherwise electromagnetism does not meet standard.Although this method of testing meets standard-required, wastes time and energy, work efficiency is lower, and error rate is higher.
Equipment and the method for the testing automobile electromagnetic sensitivity that the disclosed patent No. of Chinese patent literature is 200610157189.0, for large electric current, inject, comprising: the unit such as power supply, artificial mains network, injection probe, current detecting probe, control module, interface card, signal generator, power amplifier, the first power cell; For free field test, comprising: the unit such as power supply, artificial mains network, radio-frequency transmissions antenna, field intensity probe, control module, interface card, signal generator, power amplifier and field intensity monitor.This patent can detected electrons electrical equipment opposing electromagnetic interference capability, but whether the Electromagnetic Launching that can not test electronic electric equipment itself meets standard-required, although the method for testing of prior art meets test request, wastes time and energy, work efficiency is lower, and error rate is higher.
Summary of the invention
The present invention is directed to existing problem, a kind of automotive electronics electrical equipment transient state conduction transmission test set has been proposed, thereby whether this device can automatically be tested voltage transient transmitting value for the electronic electric equipment on automobile and obtain its Electromagnetic Launching and meet the requirements, and this device work efficiency is high, error rate is low.
The present invention realizes by following technical proposal: a kind of automotive electronics electrical equipment transient state conduction transmission test set, it is characterized in that, this device comprises controller, power supply for the electronic electric equipment power supply to tested, for the switches set one of the tested electronic electric equipment of break-make with for gathering the voltage probe of the tested rear voltage transient transmitting value of electronic electric equipment energising, the input end of described switches set one connects one end of power supply, the output terminal of switches set one is for connecting tested electronic electric equipment, the other end of power supply is for connecting tested electronic electric equipment, the input end of described voltage probe respectively output terminal and the power supply of connecting valve group one for being connected one end of tested electronic electric equipment, the output terminal of described voltage probe connects the input end of controller, the control end of described switches set one connects the output terminal of controller, the input end of described controller is also connected with operation interface, described controller output end is also connected with display screen, described controller receives the higher limit signalization of the voltage transient transmitting value of operation interface and processes the higher limit that obtains voltage transient transmitting value, described controller receives make-and-break time and the frequency of the switches set one control signal gauge tap group one of operation interface transmission, when controller gauge tap group one is connected, the voltage transient transmitting value that controller receiver voltage probe sends and with current higher limit comparison, controller is controlled display screen and is shown comparative result and current voltage transient state transmitting value.
The both positive and negative polarity of electronic electric equipment that will be tested is connecting valve group one and power supply respectively, operating personnel can set by operation interface the higher limit of voltage transient transmitting value of the electronic electric equipment of current tested and the make-and-break time of switches set one and frequency.Set Time Controller and receive the signal that operation interface sends, process and obtain the higher limit of current voltage transient state transmitting value and make-and-break time and the frequency of switches set one.Controller make-and-break time and the frequency that gauge tap group one executable operations interface sends that transmit control signal, when controller gauge tap group one is connected, tested electronic electric equipment obtains electricly, and voltage probe gathers the voltage instantaneous transmitting value of tested electronic electric equipment and sends to controller.The voltage transient transmitting value that controller receiver voltage probe sends and with current higher limit comparison, controller is controlled display screen and is shown comparative result and current voltage transient state transmitting value.The frequency break-make of controller gauge tap group one to set, after each switches set one is connected, controller all can receiver voltage the voltage transient transmitting value that sends of probe and with current higher limit comparison, with Time Controller, control display screen and show respectively comparative result and the current voltage transient state transmitting value after each connection.Current voltage transient state transmitting value shows with the form of waveform.
In above-mentioned automotive electronics electrical equipment transient state conduction transmission test set, this device also comprises the switches set two for the tested electronic electric equipment of break-make, the output terminal of the input end connecting valve group one of described switches set two, described switches set two output terminals are for connecting tested electronic electric equipment, described voltage probe input end respectively output terminal and the power supply of connecting valve group two for being connected one end of tested electronic electric equipment, the control end of described switches set two connects the output terminal of controller, when tested electronic electric equipment is close to gauge tap own, described in during test, operation interface transmits control signal and to controller gauge tap group one, keeps make-and-break time and the frequency of connection and gauge tap group two, when tested electronic electric equipment is away from gauge tap own, during test described in operation interface transmit control signal and keep connecting and make-and-break time and the frequency of gauge tap group one to controller gauge tap group two.When tested electronic electric equipment is used onboard, switch from itself has dividing of distance, by two groups of switches are set, simulate the actual condition of tested electronic electric equipment while arranging onboard, when near, select switches set two, when far away, selecting switches set one, is exactly that test data has more accuracy like this.
In above-mentioned automotive electronics electrical equipment transient state conduction transmission test set, between described switches set one and switches set two, be connected with for replacing the artificial mains network of vehicle harness characteristic, described artificial mains network's input end connects power supply for connecting one end of tested electronic electric equipment, and described artificial mains network's output terminal is for connecting tested electronic electric equipment.Electronic electric equipment on vehicle arranges wire harness more complicated, and tested electronic electric equipment setup and use onboard generally can have connection with other electronic electric equipments, and the real working condition that artificial mains network simulates tested electronic electric equipment is set.Artificial mains network replaces the impedance after real work onboard of tested electronic electric equipment.
In above-mentioned automotive electronics electrical equipment transient state conduction transmission test set, described artificial mains network comprises inductance L, capacitor C, resistance R and resistance R s, described inductance L two ends connect connecting valve group one and switches set two respectively, one end of described resistance R s connects between inductance L and switches set one, the other end connects respectively power supply for connecting one end of tested electronic electric equipment and one end of resistance R, the other end of resistance R connects capacitor C one end, the other end of capacitor C connects between inductance L and switches set two, one end of described resistance R contact resistance Rs replaces power supply for connecting tested electronic electric equipment, described voltage probe input end respectively output terminal and the resistance R of connecting valve group two for being connected one end of tested electronic electric equipment.Inductance L, capacitor C, resistance R and resistance R s are for simulating the impedance of tested electronic electric equipment while arranging onboard, the real operating mode that the tested electronic electric equipment that reduces is to a certain extent worked onboard.
In above-mentioned automotive electronics electrical equipment transient state conduction transmission test set, described switches set one comprises relay one and electronic switch K3, the two ends of the normal open switch K1 of described relay one connect respectively power supply and inductance L, the coil Km1 of described relay and electronic switch K3 are connected respectively the output terminal of controller, and described electronic switch K3 is in parallel with the normal open switch K1 of relay one.Switches set one is applicable under tested electronic electric equipment actual conditions the situation away from from gauge tap itself, the normal open switch K1 of relay one is applicable when tested electronic electric equipment working control switch is mechanical switch, and electronic switch K3 is applicable when the working control switch of tested electronic electric equipment is electronic switch.While selecting the normal open switch K1 of pilot relay two, make-and-break time and the frequency of the normal open switch K1 of controller pilot relay two keep electronic switch K3 to disconnect, otherwise the normal open switch K1 of relay two disconnect simultaneously.Electronic switch K3 comprises the electronic switch of triode or diode etc.
In above-mentioned automotive electronics electrical equipment transient state conduction transmission test set, described switches set two comprises relay two and electronic switch K4, one end of the normal open switch K2 of described relay two connects inductance L, the other end connect the output terminal of voltage probe with for being connected tested electronic electric equipment, the coil Km2 of described relay two is connected respectively controller with electronic switch K4, and described electronic switch K4 is in parallel with the normal open switch K2 of relay two.Switches set two is applicable under tested electronic electric equipment actual conditions the situation close to from gauge tap itself, the normal open switch K2 of relay two is applicable when tested electronic electric equipment working control switch is mechanical switch, and electronic switch K4 is applicable when the working control switch of tested electronic electric equipment is electronic switch.While selecting the normal open switch K2 of pilot relay two, make-and-break time and the frequency of the normal open switch K2 of controller pilot relay two keep electronic switch K4 to disconnect, otherwise the normal open switch K2 of relay two disconnect simultaneously.Electronic switch K4 comprises the electronic switch of triode, diode etc.
In above-mentioned automotive electronics electrical equipment transient state conduction transmission test set, described controller input end is connected with the temperature sensor for detection of ambient temperature.Tested electronic electric equipment needs to have a temperature limiting in test process, because excess Temperature can affect test effect, and easily makes circuit paralysis, and too low can impact tested the accurate of effect.Temperature sensor can be experienced temperature around, sends to controller, by controller judgement Current Temperatures symbol, does not meet test request.
In above-mentioned automotive electronics electrical equipment transient state conduction transmission test set, described operation interface comprises that switches set use button, switchtype selection button, switch on and off time button, switch on and off frequency button, upper voltage limit value arrange button, temperature setting button and start button, and described whole buttons connect the input end of controllers.This proving installation can detect different electronic electric equipments, operating personnel can set by these buttons on operation interface, the electronic electric equipment of different needs tests needs condition different, and operating personnel set voluntarily, and controller receives setting signal and controls related device work again.
In above-mentioned automotive electronics electrical equipment transient state conduction transmission test set, described controller is provided with for connecting the communication interface of tested electronic electric equipment output signal line, and described communication interface comprises CAN bus interface, LIN bus interface, analog signal interface and digital signal interface.If tested electronic electric equipment has signal wire, that connects its signal wire the corresponding communication interface of controller, electronic electric equipment when electric, controller receives the signal controlling display screen that signal wire sends and shows its signal.Contribute to like this to judge whether current electronic electric equipment works, thereby make the test result of this proving installation more accurate.
In above-mentioned automotive electronics electrical equipment transient state conduction transmission test set, this device comprises cable one, cable two, cable three and cable four, described power supply is connected by cable one with switches set one, described switches set one is connected by cable two with inductance L, described inductance L is connected by cable three with switches set two, described switches set two is connected with one end of cable four, the other end of cable four is for connecting tested electronic electric equipment, described cable one, cable two, actual service condition is definite onboard according to tested electronic electric equipment for the length of cable three and cable four.By arranging that cable connects and length requirement to cable, the real working condition of coming simulation electronic electrical equipment to work on vehicle, from but test data is more accurate.
Compared with prior art, the present invention has the following advantages:
1, the present invention can automatic test electronic electric equipment, has saved time and efforts, and simple to operation.
2, the present invention can simulate tested electronic electric equipment operating mode during setup and use onboard, makes the result of test more accurate, has reduced error rate.
3, the present invention has operation interface and display screen, and operating personnel can be operated easily, and can check intuitively test data result.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is that switches set one of the present invention, switches set two, artificial mains network and controller are connected to each other schematic diagram.
In figure: 1, controller; 2, power supply; 3, switches set one; 4, switches set two; 5, artificial mains network; 6, voltage probe; 7, temperature sensor; 8, display screen; 9, switches set is used button; 10, switchtype is selected button; 11, switch on and off time button; 12, switch on and off frequency button; 13, upper voltage limit value arranges button; 14, temperature setting button; 15, start button; 16, CAN bus interface; 17, LIN bus interface; 18, analog signal interface; 19, digital signal interface; 20, cable one; 21, cable two; 22, cable three; 23, cable four.
Embodiment
Be below specific embodiments of the invention, and by reference to the accompanying drawings, technical scheme of the present invention be further described, but the present invention is not limited to these embodiment.
As shown in Figure 1, this automotive electronics electrical equipment transient state conduction transmission test set, comprise controller 1, for giving the power supply 2 of tested electronic electric equipment power supply, for the switches set 1 of the tested electronic electric equipment of break-make with for gathering the voltage probe 6 of voltage transient transmitting value after tested electronic electric equipment energising, this device also comprises the switches set 24 for the tested electronic electric equipment of break-make.The input end of switches set 1 connects one end of power supply 2, the input end of output terminal connecting valve group 24, the other end of power supply 2 is for connecting tested electronic electric equipment, switches set 24 output terminals are for connecting tested electronic electric equipment, connecting valve group 24 output terminals are with power supply 2 for being connected one end of tested electronic electric equipment respectively for voltage probe 6 input ends, and switches set 1 is connected the output terminal of controller 1 with switches set 24.Between switches set 1 and switches set 24, be also connected with for replacing the artificial mains network 5 of vehicle harness characteristic, artificial mains network 5 input end connects power supply 2 for connecting one end of tested electronic electric equipment, and artificial mains network's 5 output terminals are for connecting tested electronic electric equipment.
The input end of controller 1 is also connected with operation interface and is useful on the temperature sensor 7 that detects ambient temperature, and controller 1 output terminal is also connected with display screen 8.Operation interface comprises that switches set use button 9, switchtype selection button 10, switch on and off time button 11, switch on and off frequency button 12, upper voltage limit value arrange button 13, temperature upper limit arranges button and start button 15, and described whole buttons connect the input end of controllers 1.Controller 1 is provided with for connecting the communication interface of tested electronic electric equipment output signal line, and communication interface comprises CAN bus interface 16, LIN bus interface 17, analog signal interface 18 and digital signal interface 19.This device also comprises cable 1, cable 2 21, cable 3 22 and cable 4 23, power supply 2 is connected by cable 1 with switches set 1, switches set 1 is connected by cable 2 21 with inductance L, inductance L is connected by cable 3 22 with switches set 24, described switches set 24 is connected with one end of cable 4 23, the other end of cable 4 23 is for connecting tested electronic electric equipment, and actual service condition is definite onboard according to tested electronic electric equipment for the length of described cable 1, cable 2 21, cable 3 22 and cable 4 23.
As shown in Figure 2, artificial mains network 5 comprises inductance L, capacitor C, resistance R and resistance R s, inductance L two ends connect connecting valve group 1 and switches set 24 respectively, one end of resistance R s connects between inductance L and switches set 1, the other end connects respectively power supply 2 for connecting one end of tested electronic electric equipment and one end of resistance R, the other end of resistance R connects capacitor C one end, the other end of capacitor C connects between inductance L and switches set 24, one end of resistance R contact resistance Rs replaces power supply 2 for connecting tested electronic electric equipment, voltage probe 6 input ends respectively connecting valve group 24 and resistance R for being connected one end of tested electronic electric equipment.Switches set 1 comprises relay one and electronic switch K3, the two ends of the normal open switch K1 of relay one connect respectively power supply 2 and inductance L, the coil Km1 of relay and electronic switch K3 are connected respectively the output terminal of controller 1, and electronic switch K3 is in parallel with the normal open switch K1 of relay one.Switches set 24 comprises relay two and electronic switch K4, one end of the normal open switch K2 of relay two connects inductance L, the other end connect the output terminal of voltage probe 6 with for being connected tested electronic electric equipment, the coil Km2 of relay two is connected respectively controller 1 with electronic switch K4, and electronic switch K4 is in parallel with the normal open switch K2 of relay two.
Controller 1 receives the higher limit signalization of the voltage transient transmitting value of operation interface and processes the higher limit that obtains voltage transient transmitting value.When tested electronic electric equipment is close to gauge tap own, during test described in operation interface transmit control signal and keep connecting and make-and-break time and the frequency of gauge tap group 24 to controller 1 gauge tap group 1; When tested electronic electric equipment is away from gauge tap own, during test described in operation interface transmit control signal and keep connecting and make-and-break time and the frequency of gauge tap group 1 to controller 1 gauge tap group 24.Controller 1 receives make-and-break time and the frequency of the switches set one 3 control signal gauge tap groups 1 of operation interface transmission, when controller 1 gauge tap group 1 is connected, the voltage transient transmitting values that controller 1 receiver voltage probe 6 sends and with current higher limit comparison, controller 1 is controlled display screen 8 and is shown comparative result and current voltage transient state transmitting values.
Below principle of work of the present invention:
Selection will be tested electronic electric equipment, such as fan blower, electric window wing swinging machine, combination instrument etc.According to the tested electronic electric equipment length of setup and use operating mode and in-house facility power determination cable 1, cable 2 21, cable 3 22 and cable 4 23 onboard; The higher limit of voltage transient transmitting value; The maximum temperature values that meets test request; And the resistance of resistance R s.According to the gauge tap of tested electronic electric equipment reality, from the distance of electronic electric equipment, determine selector switch group 1 or switches set 24, and control test according to the corresponding switch in the kind selector switch group of its gauge tap, as being the normal open switch that mechanical switch is selected relay originally; Originally be that electronic switch is selected electronic switch K3 or electronic switch K4.According to test needs, determine make-and-break time and the break-make frequency of switch.
Selecting of power supply 2: the internal resistance of uninterruptable power 2 should be less than direct current 0.01 Ω.If use reference power supply 2(to there is enough current-carrying capacities) carry out simulated automotive battery, should be noted the low internal resistance of simulated battery.If use automobile batteries, needs charge power supply 2 to reach specified standard level.
Selecting of cable: the length of cable should be selected according to electronic electric equipment actual service condition onboard, it is the working current that distribution should be able to bear tested electronic electric equipment, if nothing is clearly stipulated in test, the following parameter of Ying You is to meet standard-required: the connector that adopts the countersunk of 100A, four pairs of stube cable length meet following requirement: 45mm≤cable 2 21 length≤75mm, 75mm≤cable 3 22 length≤125mm, 150mm≤cable one 20 length+stube cable 2 21 length≤250mm, 150mm≤cable 3 22 length+cable 4 23 length≤250mm.
The electronic devices and components that artificial mains network 5 comprises are preferably following parameter, to meet the requirement of standard.Inductance L size is 5 μ H(air core coils); Capacitor C size is that 0.1 μ F(is when alternating current 200V operating voltage and direct current 1500V operating voltage); Resistance R size is 50 Ω; When the size of resistance R s is used onboard according to tested electronic electric equipment, the resistance value measuring on ignition switch one end of disconnection and the wire harness between ground, when the numerical value without any clear and definite, should select resistance R s resistance is 40 Ω.If use wire-wound resistor, is required to be double wrap resistance (having minimum reactive component).Rs is for simulating the direct current resistance of other electronic electric equipment in parallel while using onboard with tested electronic electric equipment.
Selecting tested electronic electric equipment is that electric window wing swinging machine is done concrete introduction.
Because transient state conduction transmission test must guarantee that test arrangement is not subject to the interference of periphery electromagnetic environment, so this automotive electronics electrical equipment transient state conduction transmission test set is positioned in screened room, test process also completes in screened room.A ground connection flat board will be set in screened room, can be for to this device ground connection.
Before starting, test completes following operation: electric window wing swinging machine is connected for being connected one end of tested electronic electric equipment with the normal open switch K2 of relay two by cable 4 23, and for being connected one end of tested electronic electric equipment, connect with resistance R by cable.Electric window wing swinging machine on car and its gauge tap very close to, therefore select switches set 24 to use as controlling, operating personnel can use the present switches set 24 of button 9 by switches set, working control switch due to electric window wing swinging machine is mechanical switch simultaneously, so operating personnel should select button 10 to carry out the normal open switch K2 of selective relay two by switchtype.In test, nothing is clearly stipulated the length of cable, therefore the following parameter of Ying You is to meet standard-required: the connector that adopts the countersunk of 100A, four pairs of stube cable length meet following requirement: 45mm≤cable 2 21 length≤75mm, 75mm≤cable 3 22 length≤125mm, 150mm≤cable one 20 length+stube cable 2 21 length≤250mm, stube cable length sum and the cable 1 of 150mm≤cable 3 22 length+cable 4 23 length≤250mm(power supply 2 and artificial mains network 5 and electric window wing swinging machine, cable 2 21, cable 3 22, the length sum of cable 4 23 equates).In test, during without any clear and definite numerical value, it is 40 Ω that resistance R s resistance is selected.Preferably the normal open switch K2 of relay two connects and disconnects 1 second in 5 seconds, and break-make number of times is 1000 times, and these arrange respectively realization by switch on and off time button 11 and switch on and off frequency button 12.The higher limit of the voltage transient transmitting value of electric window wing swinging machine is 100V, thus operating personnel should the higher limit that button 13 arranges voltage transient transmitting value to be set by upper voltage limit value be 100V.The test environment temperature maximum of electric window wing swinging machine is no more than 28 ℃, and minimum is not less than 18 ℃, so operating personnel should be 23 ℃ ± 5 ℃ by temperature setting button 14 set temperature scopes.
Operating personnel set after above-mentioned parameter and instruction by the button of operation interface, controller 1 deposits these parameters and instruction in, now, when operating personnel press after start button 15, controller 1 starts automatic test job, and controller 1 is controlled the higher limit of selection, make-and-break time, break-make frequency and the voltage transient transmitting value of display screen 8 display switch groups.Controller 1 receives the temperature of the experimental enviroment of temperature sensor 7 transmissions and controls display screen 8 demonstrations, with Time Controller 1, judge that its temperature is whether in the scope of 23 ℃ ± 5 ℃, not within the scope of this, controller 1 is directly controlled the underproof prompting of display screen 8 displays temperature, no longer carries out work below.
When the temperature of controller 1 judgement experimental enviroment is in the scope of 23 ℃ ± 5 ℃, the normal open switch K1 that controller 1 is controlled electronic switch K3 and relay one keeps on-state, being equivalent to power supply 2 is directly connected with artificial mains network 5, with Time Controller 1, control electronic switch K4 off-state, namely the break-make of the normal open switch K2 of 1 pilot relay two of controller gathers the energising magnitude of voltage of electric window wing swinging machine.Controller 1 transmits control signal to the coil Km2 of relay two, and the normal open switch K2 of pilot relay two connects and disconnects 1 second in 5 seconds, and break-make number of times is 1000 times.The rear electric window wing swinging machine of normal open switch K2 connection of each relay two obtains electric, and voltage probe 6 just can collect voltage, and the transient voltage probe 6 of electric window wing swinging machine power-off also can collect voltage.Controller 1 all can receiver voltage the voltage transient transmitting values that send of probe 6 and with current higher limit 100V comparison, controller 1 is controlled display screen 8 and is shown respectively comparative result and the current voltage transient state transmitting value after each connection.The closed connection after circuit of normal open switch K2 of each relay two, the time is therefore to have a lot of magnitudes of voltage in 5 seconds, so because very short these magnitudes of voltage of 5 second time all belong to voltage transient transmitting value.Controller 1 all compares these values with higher limit, when magnitude of voltage all little than higher limit, controller 1 is controlled 8 of display screens and is shown the information that magnitude of voltage is less than higher limit, when wherein there being magnitude of voltage larger than higher limit, controller 1 is controlled display screen 8 and is shown magnitude of voltage than the non-compliant information of the large test of higher limit.Controller 1 is controlled display screen 8 and is shown with the form of waveform receiving magnitude of voltage that voltage probe 6 sends, and wherein horizontal ordinate is the time, and ordinate is the magnitude of voltage of the higher limit 100V that comprises voltage transient transmitting value.Operating personnel can see test result intuitively by display screen 8, also can be by checking that the peak value of waveform judges whether peak value is less than 100V.Due to energising moment and the moment electronic electric equipment of power-off all can produce electromagnetism, voltage after power on/off is large, the electromagnetic interference (EMI) producing also can be large, whether the transient voltage value that therefore judges electric window wing swinging machine energising symbol standard, just can obtain whether symbol standard of electromagnetism that electric window wing swinging machine sends.
Electric window wing swinging machine is onboard during real work, power supply is divided into automobile storage battery and engine power supply, it is 12V that assumed vehicle selects the voltage of battery, voltage when testing power supply 2 should be respectively 13.5 ± 0.5V (voltage during generator work) and 12 ± 0.2V(powered battery).During each power supply 2 work, the normal open switch K2 of relay two break-make tests for 1000 times.Although test voltage is less, the voltage of electric window wing swinging machine moment generation is very high, therefore selects 100V as the higher limit of voltage instantaneous transmitting value.
Meet test voltage and be all less than the tested electric window wing swinging machine symbol production standard that 100V represents production.Operating personnel also can arrange the higher limit of other voltage instantaneous transmitting values and repeatedly test, and other higher limits should be less than 100V, are preferably 25V, 50V, 75V.Test voltage is all less than 25V, and the electromagnetism that the tested electric window wing swinging machine that expression is produced sends while working is little, and the electric window wing swinging machine quality of production is high.Test voltage is greater than 25V and is less than 50V, shows that the tested electric window wing swinging machine quality of producing is better.Test voltage is greater than 50V and is less than 75V, shows that the tested electric window wing swinging machine quality of producing is general.Test voltage is greater than 75V and is less than 100V, shows that the tested electric window wing swinging machine of producing is second-rate, but meets production standard.
Electric window wing swinging machine is with LIN bus, therefore LIN bus can be connected to the LIN bus interface 17 of controller 1, when controller 1 starts work and during electric window wing swinging machine energising work, vehicle window Manual lifting/dropping signal, fast rise/dropping signal, anti-pinch state detection signal that controller 1 receives in LIN bus, controller 1 is by the signal receiving in display screen 8 demonstrations, and operating personnel just can check that whether the important output of electric window wing swinging machine is normal.
In actual test process, controller 1 also can connect power supply 2 and judge whether power supply 2 voltages meet standard.At controller 1, receive after the enabling signal of start button 15 transmissions, first receive voltage the judgement of power supply 2, at judgement power supply 2 voltages, when undesirable, controller 1 is controlled display screen 8 and is shown that current power supply 2 does not meet test request, and controller 1 does not carry out next step action.
In reality test, controller 1 input end is connected with reset button, and by reset button, operating personnel can be controller 1 reset work.
This device to test electronic electric equipment after energising and power-off moment produce voltage transient transmitting value, and judge whether voltage transient transmitting value meets production installation requirement, voltage transient transmitting value meets standard just can be turned down the electromagnetism that electronic electric equipment produces and meet standard, shows that tested electronic electric equipment meets production installation requirement.This device is tested automatically by simulating tested electronic electric equipment actual service condition onboard, so just makes test result more accurate, has the prospect of widespread use.
Specific embodiment described herein is only to the present invention's explanation for example.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although more used controller 1 herein, power supply 2, switches set 1, switches set 24, artificial mains network 5, voltage probe 6, temperature sensor 7, display screen 8, switches set is used button 9, switchtype is selected button 10, switch on and off time button 11, switch on and off frequency button 12, upper voltage limit value arranges button 13, temperature setting button 14, start button 15, CAN bus interface 16, LIN bus interface 17, analog signal interface 18, digital signal interface 19, cable 1, cable 2 21, cable 3 22, cable 4 23 terms such as grade, but do not get rid of the possibility of using other term.Use these terms to be only used to describe more easily and explain that it is all contrary with spirit of the present invention that essence of the present invention is construed to any additional restriction them.
Claims (10)
1. an automotive electronics electrical equipment transient state is conducted transmission test set, it is characterized in that, this device comprises controller (1), power supply (2) for the electronic electric equipment power supply to tested, for the switches set one (3) of the tested electronic electric equipment of break-make with for gathering the voltage probe (6) of the tested rear voltage transient transmitting value of electronic electric equipment energising, the input end of described switches set one (3) connects one end of power supply (2), the output terminal of switches set one (3) is for connecting tested electronic electric equipment, the other end of power supply (2) is for connecting tested electronic electric equipment, the input end of described voltage probe (6) respectively the output terminal of connecting valve group one (3) with power supply (2) for being connected one end of tested electronic electric equipment, the output terminal of described voltage probe (6) connects the input end of controller (1), the control end of described switches set one (3) connects the output terminal of controller (1), the input end of described controller (1) is also connected with operation interface, described controller (1) output terminal is also connected with display screen (8), described controller (1) receives the higher limit signalization of the voltage transient transmitting value of operation interface and processes the higher limit that obtains voltage transient transmitting value, described controller (1) receives make-and-break time and the frequency of switches set one (3) the control signal gauge tap group one (3) of operation interface transmission, when controller (1) gauge tap group one (3) is connected, the voltage transient transmitting value that controller (1) receiver voltage probe (6) sends and with current higher limit comparison, controller (1) is controlled display screen (8) and is shown comparative result and current voltage transient state transmitting value.
2. automotive electronics electrical equipment transient state according to claim 1 is conducted transmission test set, it is characterized in that, this device also comprises the switches set two (4) for the tested electronic electric equipment of break-make, the output terminal of the input end connecting valve group one (3) of described switches set two (4), described switches set two (4) output terminals are for connecting tested electronic electric equipment, described voltage probe (6) input end respectively the output terminal of connecting valve group two (4) with power supply (2) for being connected one end of tested electronic electric equipment, the control end of described switches set two (4) connects the output terminal of controller (1), when tested electronic electric equipment is close to gauge tap own, described in during test, operation interface transmits control signal and to controller (1) gauge tap group one (3), keeps make-and-break time and the frequency of connection and gauge tap group two (4), when tested electronic electric equipment is away from gauge tap own, during test described in operation interface transmit control signal and keep connecting and make-and-break time and the frequency of gauge tap group one (3) to controller (1) gauge tap group two (4).
3. automotive electronics electrical equipment transient state according to claim 2 is conducted transmission test set, it is characterized in that, between described switches set one (3) and switches set two (4), be connected with the artificial mains network (5) for replacing vehicle harness characteristic, described artificial mains network's (5) input end connects power supply (2) for connecting one end of tested electronic electric equipment, and described artificial mains network (5) output terminal is for connecting tested electronic electric equipment.
4. automotive electronics electrical equipment transient state according to claim 3 is conducted transmission test set, it is characterized in that, described artificial mains network (5) comprises inductance L, capacitor C, resistance R and resistance R s, described inductance L two ends connect connecting valve group one (3) and switches set two (4) respectively, one end of described resistance R s connects between inductance L and switches set one (3), the other end connects respectively power supply (2) for connecting one end of tested electronic electric equipment and one end of resistance R, the other end of resistance R connects capacitor C one end, the other end of capacitor C connects between inductance L and switches set two (4), one end of described resistance R contact resistance Rs replaces power supply (2) for connecting tested electronic electric equipment, described voltage probe (6) input end respectively the output terminal of connecting valve group two (4) with resistance R for being connected one end of tested electronic electric equipment.
5. automotive electronics electrical equipment transient state according to claim 1 is conducted transmission test set, it is characterized in that, described switches set one (3) comprises relay one and electronic switch K3, the two ends of the normal open switch K1 of described relay one connect respectively power supply (2) and inductance L, the coil Km1 of described relay and electronic switch K3 are connected respectively the output terminal of controller (1), and described electronic switch K3 is in parallel with the normal open switch K1 of relay one.
6. automotive electronics electrical equipment transient state according to claim 2 is conducted transmission test set, it is characterized in that, described switches set two (4) comprises relay two and electronic switch K4, one end of the normal open switch K2 of described relay two connects inductance L, the other end connect the output terminal of voltage probe (6) with for being connected tested electronic electric equipment, the coil Km2 of described relay two is connected respectively controller (1) with electronic switch K4, and described electronic switch K4 is in parallel with the normal open switch K2 of relay two.
7. automotive electronics electrical equipment transient state conduction transmission test set according to claim 1, is characterized in that, described controller (1) input end is connected with the temperature sensor (7) for detection of ambient temperature.
8. automotive electronics electrical equipment transient state according to claim 1 is conducted transmission test set, it is characterized in that, described operation interface comprises that switches set use button (9), switchtype selection button (10), switch on and off time button (11), switch on and off frequency button (12), upper voltage limit value arrange button (13), temperature setting button (14) and start button (15), and described whole buttons connect the input end of controllers (1).
9. automotive electronics electrical equipment transient state according to claim 1 and 2 is conducted transmission test set, it is characterized in that, described controller (1) is provided with for connecting the communication interface of tested electronic electric equipment output signal line, and described communication interface comprises CAN bus interface (16), LIN bus interface (17), digital signal interface (19) (18) and digital signal interface.
10. according to the automotive electronics electrical equipment transient state conduction transmission test set described in claim 1 or 2 or 3, it is characterized in that, this device comprises cable one (20), cable two (21), cable three (22) and cable four (23), described power supply (2) is connected by cable one (20) with switches set one (3), described switches set one (3) is connected by cable two (21) with inductance L, described inductance L is connected by cable three (22) with switches set two (4), described switches set two (4) is connected with one end of cable four (23), the other end of cable four (23) is for connecting tested electronic electric equipment, described cable one (20), cable two (21), actual service condition is definite onboard according to tested electronic electric equipment for the length of cable three (22) and cable four (23).
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| CN201310585752.4A CN103592543B (en) | 2013-11-19 | 2013-11-19 | A kind of automotive electronics electrical equipment transient state conducted emission test device |
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| CN201310585752.4A CN103592543B (en) | 2013-11-19 | 2013-11-19 | A kind of automotive electronics electrical equipment transient state conducted emission test device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107991564A (en) * | 2017-12-07 | 2018-05-04 | 广州立讯检测有限公司 | A kind of automotive electronics electrical equipment transient state vulnerability to jamming tests system |
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