CN111856194A - Spliced electric assembly electromagnetic compatibility loading test system in darkroom - Google Patents
Spliced electric assembly electromagnetic compatibility loading test system in darkroom Download PDFInfo
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- CN111856194A CN111856194A CN202010857470.5A CN202010857470A CN111856194A CN 111856194 A CN111856194 A CN 111856194A CN 202010857470 A CN202010857470 A CN 202010857470A CN 111856194 A CN111856194 A CN 111856194A
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- 238000012360 testing method Methods 0.000 title claims abstract description 53
- 230000030279 gene silencing Effects 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 22
- 230000001360 synchronised effect Effects 0.000 claims description 19
- 230000008878 coupling Effects 0.000 claims description 17
- 238000010168 coupling process Methods 0.000 claims description 17
- 238000005859 coupling reaction Methods 0.000 claims description 17
- 239000013307 optical fiber Substances 0.000 claims description 16
- 238000012544 monitoring process Methods 0.000 claims description 11
- 230000001681 protective effect Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000000110 cooling liquid Substances 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000035939 shock Effects 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 238000013016 damping Methods 0.000 claims description 2
- 238000013480 data collection Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 description 8
- 239000011358 absorbing material Substances 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
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- Electromagnetism (AREA)
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Abstract
The invention discloses a splicing type electric assembly electromagnetic compatibility loading test system in a darkroom, which comprises a test bed main body, an anechoic chamber, a shielding control chamber, a silencing chamber and a driving module bottom framework, wherein the test bed main body comprises a tested piece module, a right driving module and a left driving module, a tested piece mounting base is mounted at the bottom of the tested piece module, four universal wheels with supporting columns are mounted at the lower end of the tested piece mounting base and fixedly arranged on the tested piece module, and a T-shaped groove is formed in the tested piece mounting base.
Description
Technical Field
The invention relates to an electromagnetic compatibility loading test system for an electric assembly, in particular to an electromagnetic compatibility loading test system for a spliced electric assembly in a darkroom.
Background
In the electromagnetic compatibility loading test of the electric assembly, the traditional test bed considers the electromagnetic interference of a loading power source and reduces the reflection surface factor during the test, places the loading power source outside a darkroom, and transmits power into the darkroom through a long shaft penetrating through a shielding wall body of the darkroom for the electromagnetic compatibility loading test of the electric assembly. The distance between the tested piece and the top of the wave-absorbing material on the wall of the darkroom needs to be equal to 1000mm, so that the length of a power shaft penetrating through the wall is required to be longer, the electromagnetic shielding problem also needs to be considered at the wall penetrating position of the shielding wall, and the strength problem required by the wall penetrating shaft when large torque is transmitted is caused, so that the scheme has the disadvantages of complex structure, high manufacturing cost, difficult installation and maintenance and relatively fixed position. Especially, when output shafts at two ends of the electric assembly are loaded, two sets of loading power sources outside the darkroom are needed, the cost is greatly increased, and the long shaft needs to transversely penetrate through the whole darkroom and cannot adapt to a larger darkroom.
Disclosure of Invention
The invention aims to provide a splicing type electric assembly electromagnetic compatibility loading test system in a darkroom, which can solve the problems of long length of a power shaft penetrating through a wall, difficult electromagnetic shielding at the wall penetrating position, difficult transmission of large torque by a wall penetrating shaft, relatively fixed position and large reflecting surface of the traditional test bench through splicing of a left driving module and a right driving module and a tested piece module and power transmission steering of a right-angle transmission box.
The purpose of the invention can be realized by the following technical scheme:
a splicing type electric assembly electromagnetic compatibility loading test system in a darkroom comprises a test bed main body, an electric wave darkroom, a shielding control room, a silencing room and a driving module bottom framework, wherein the test bed main body comprises a tested piece module, a right driving module and a left driving module; the right driving module comprises a dynamometer, a driving module bottom plate, an insulating elastic coupling, a right-angle transmission box, a synchronous belt, a ball cage shaft system, a ball cage coupling and a tooling spline shaft, wherein the driving force of the dynamometer is transmitted to the right-angle transmission box through the insulating elastic coupling, the power transmission direction is changed, the power is transmitted to the ball cage shaft system on the upper layer through a synchronous belt wheel and the synchronous belt, and is transmitted to the electric assembly through the ball cage coupling and the tooling spline shaft; the ball cage shaft system is supported by a small bearing seat, the ball cage shaft system is connected with a ball cage coupler through an insulating elastic coupler, the ball cage coupler is supported by a large bearing seat, the small bearing seat and the large bearing seat are both installed on an arch door base, a small protective cover is installed outside the small bearing seat, a large protective cover is installed outside the large bearing seat, a right-angle transmission box is installed below the arch door base, an insulating damping base plate is installed between the large bearing seat and the arch door base, the dynamometer, the right-angle transmission box and the arch door base are all installed on a driving module base plate, a dynamometer shielding cover is sleeved on the outer periphery of the dynamometer, a synchronous belt shielding cover is sleeved outside the synchronous belt, a conductive brush is installed on the ball cage shaft system, and the ball cage shaft system, the small bearing seat, the dynamometer shielding cover, the synchronous belt shielding cover and the driving module base plate are; install the bottom plate guide rail between drive module bottom plate and the drive module bottom frame, the wheel base of electronic assembly is adjusted along the axial displacement of ball cage shaft coupling to the drive module bottom plate, fixes the drive module bottom plate through bottom frame guide rail and locking slider, drive module bottom frame lower extreme is installed four and is taken the support column universal wheel, and right drive module and left drive module's structure is the same and symmetrical mirror image distributes on by the test piece module.
As a further scheme, the anechoic chamber comprises a wave-absorbing wedge, an antenna, a shielding acquisition box and an optical fiber waveguide, wherein the wave-absorbing wedge is arranged on a shielding metal wall of the anechoic chamber, the antenna is arranged towards the tested piece electric assembly, and the shielding acquisition box is arranged below an elevated floor and is used for acquiring temperature, rotating speed, torque and power signals of the dynamometer, converting the acquired signals into optical fiber signals and transmitting the optical fiber signals to the data acquisition cabinet through the optical fiber waveguide.
As a further scheme of the invention, the anechoic chamber comprises a power supply simulator, a data acquisition cabinet, a frequency converter and a cooler, wherein electric energy of the frequency converter enters the anechoic chamber through a filter to provide electric energy for the dynamometer, cooling liquid of the cooler enters the anechoic chamber through water waveguide to provide cooling for the dynamometer and the electric assembly, electric energy of the power supply simulator enters the anechoic chamber through the filter to provide electric energy for the electric assembly, the data acquisition cabinet acquires flow, pressure and temperature signals of the cooler and integrates signals transmitted by a shielding acquisition box, signals output by the data acquisition cabinet are transmitted to the control cabinet through an Ethernet-optical fiber-Ethernet converter, and a power amplification chamber is arranged in the anechoic chamber.
As a further scheme of the invention, the electric assembly and the power supply dynamometer are both connected with cables for supplying power, and the outside of each cable is wrapped with a high-density shielding net.
As a further scheme of the invention, the shielding control room comprises a monitoring operation platform and a control cabinet, the control cabinet controls and receives antenna signals in the anechoic chamber, the control cabinet receives related signals of the electric assembly through a CAN-optical fiber-CAN converter, and the control cabinet receives signals of the data acquisition cabinet and transmits the signals to the monitoring operation platform.
As a further scheme of the invention, the shielding control room comprises a monitoring operation platform and a control cabinet, the control cabinet controls and receives antenna signals in the anechoic chamber, the control cabinet receives related signals of the electric assembly through a CAN-optical fiber-CAN converter, and the control cabinet receives signals of the data acquisition cabinet and transmits the signals to the monitoring operation platform.
The invention has the beneficial effects that: when the electromagnetic compatibility loading test of the electric assembly is required, each module can be moved into an electric wave darkroom, the test bed main body is assembled by quickly splicing the modules through a connecting plate, and the support column with the support column universal wheel falls down to complete the falling position of the test bed main body; when the test is not needed, the test bed main body is disassembled into three independent modules to be moved out of the anechoic chamber, and the anechoic chamber can be used for other tests.
The power of the dynamometer is turned through the right angle of the right-angle transmission box, the front face of the dynamometer faces the antenna, and the dynamometer is arranged behind the right-angle transmission box relative to the antenna, so that the metal reflecting surface is reduced.
The loading dynamometer of the electric assembly is arranged in the anechoic chamber and can be arranged at any position in the anechoic chamber along with the test bed main body, the movement is flexible, the requirement that the distance between a tested piece and the top of the wave-absorbing material on the wall of the anechoic chamber is more than or equal to 1000mm can be met, and the problems of power shaft wall-through shielding and the like are not needed to be considered.
The power parts such as dynamometer machine, right angle drive case are sealed completely with electrically connected electrically conductive brush, shield cover, and the cable for electric assembly, dynamometer machine power supply is wrapped up with high density shielding net, and electric assembly is then insulating for other parts, avoids the influence of power source electromagnetic field to the test.
The data signal is converted into optical fiber by a converter and passes through the anechoic chamber through the optical fiber waveguide, so that the influence of the cable penetrating through the wall on the shielding efficiency of the anechoic chamber is solved.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a general layout of the present invention;
FIG. 2 is a schematic view of the overall structure of the main body of the test bed according to the present invention;
FIG. 3 is a top view of a test stand body according to the present invention;
FIG. 4 is a front view of a main body of the test stand of the present invention;
FIG. 5 is a left side view of the main body of the test stand of the present invention;
in the figure: 1. a test bed main body; 2. an anechoic chamber; 3. shielding the control room; 4. a sound deadening chamber; 5. a tested piece module; 6. a right drive module; 7. a left drive module; 8. a dynamometer; 9. a drive module base plate; 10. an insulating elastic coupling; 11. a right-angle transmission case; 12. a synchronous belt; 13. a synchronous pulley; 14. a floor rail; 15. a drive module bottom frame; 16. locking the sliding block; 17. a synchronous belt shielding cover; 18. an arch base; 19. a small protective cover; 20. a small bearing seat; 21. a large protective cover; 22. a large bearing seat; 23. a ball cage coupler; 24. assembling a spline shaft; 25. an electric assembly; 26. a ball cage shaft system; 27. a conductive brush; 28. a dynamometer shielding case; 29. a connecting plate; 30. a tested piece mounting base; 31. a tested piece mounting bracket 32 and a universal wheel with a support column; 33. a bottom frame rail; 34. an insulating shock-absorbing base plate; 35. wave-absorbing splitting; 36. shielding the collection box; 37. an antenna; 38. an optical fiber waveguide; 39. a CAN-fiber-CAN converter; 40. monitoring the operation table; 41. a power amplifier chamber; 42. a filter; 43. a water waveguide; 44. a power supply simulator; 45. a cooling machine; 46. a frequency converter; 47. a control cabinet; 48. an Ethernet-fiber-Ethernet converter; 49. a data acquisition cabinet; 50. high density shielding mesh.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, a darkroom splicing type electric assembly electromagnetic compatibility loading test system comprises a test bed main body 1, an anechoic chamber 2, a shielding control room 3, a silencing room 4 and a driving module bottom frame 15, wherein the test bed main body 1 comprises a tested piece module 5, a right driving module 6 and a left driving module 7, a tested piece mounting base 30 is mounted at the bottom of the tested piece module 5, four universal wheels 32 with supporting columns are mounted at the lower end of the tested piece mounting base 30 and fixedly arranged on the tested piece module 5, a T-shaped groove is arranged on the tested piece mounting base 30, a tested piece mounting bracket 31 is mounted on the tested piece mounting base 30, an insulating shock absorption base plate 34 is mounted between the tested piece mounting base 30 and the tested piece mounting bracket 31, an electric assembly 25 is mounted on the tested piece mounting bracket 31, the tested piece module 5 is connected with the right driving module 6 and the left driving module 7 through a connecting plate 29, assembling a test bed main body 1; the right driving module 6 comprises a dynamometer 8, a driving module bottom plate 9, an insulating elastic coupler 10, a right-angle transmission box 11, a synchronous belt 12, a ball cage shaft system 26, a ball cage coupler 23 and a tooling spline shaft 24, the driving force of the dynamometer 8 is transmitted to the right-angle transmission box 11 through the insulating elastic coupler 10, the power transmission direction is changed, the power is transmitted to the upper ball cage shaft system 26 through a synchronous belt wheel 13 and the synchronous belt 12, and is transmitted to an electric assembly 25 through the ball cage coupler 23 and the tooling spline shaft 24; ball cage axle is 26 is supported by little bearing frame 20, connects ball cage shaft coupling 23 through insulating elastic coupling 10, ball cage shaft coupling 23 is supported by big bearing frame 22, little bearing frame 20 and big bearing frame 22 are all installed on arched door base 18, little bearing frame 20 externally mounted has little protection casing 19, big bearing frame 22 externally mounted has big protection casing 21, installs right angle drive case 11 under arched door base 18, install insulating shock attenuation backing plate 34 between big bearing frame 22 and the arched door base 18, dynamometer 8, right angle drive case 11, arched door base 18 all install on drive module bottom plate 9, dynamometer 8 periphery cover is equipped with dynamometer shield 28, hold-in range 12 outside cover is equipped with hold-in range shield 17, installs conductive brush 27 on the ball cage axle 26, little bearing frame 20, dynamometer shield 28, dynamometer 12 periphery cover is equipped with, The synchronous belt shielding cover 17 is electrically connected with the driving module bottom plate 9 through a conductive brush 27; install bottom plate guide rail 14 between drive module bottom plate 9 and the drive module bottom frame 15, drive module bottom plate 9 adjusts electric assembly 25's wheel base along the axial displacement of ball cage coupling 23, through bottom frame guide rail 33 and the fixed drive module bottom plate 9 of locking slider 16, four take support column universal wheels 32 are installed to drive module bottom frame 15 lower extreme, and right drive module 6 and left drive module 7's the same and symmetrical mirror image distribution of structure is on by test piece module 5.
The anechoic chamber 2 comprises a wave-absorbing wedge 35, an antenna 37, a shielding acquisition box 36 and an optical fiber waveguide 38, the wave-absorbing wedge 35 is installed on a shielding metal wall of the anechoic chamber 2, the antenna 37 is installed towards the tested piece electric assembly 25, and the shielding acquisition box 36 is installed below an elevated floor and used for acquiring temperature, rotating speed, torque and power signals of the dynamometer 8, converting the acquired signals into optical fiber signals and transmitting the optical fiber signals to the data acquisition cabinet 49 through the optical fiber waveguide 38.
The anechoic chamber 4 comprises a power supply simulator 44, a data acquisition cabinet 49, a frequency converter 46 and a cooler 45, wherein electric energy of the frequency converter 46 enters the anechoic chamber 2 through the filter 42 to provide electric energy for the dynamometer 8, cooling liquid of the cooler 45 enters the anechoic chamber 2 through the water waveguide 43 to provide cooling for the dynamometer 8 and the electric assembly 25, electric energy of the power supply simulator 44 enters the anechoic chamber 2 through the filter 42 to provide electric energy for the electric assembly 25, the data acquisition cabinet 49 acquires flow, pressure and temperature signals of the cooler 45 and integrates signals transmitted by the shielding acquisition box 36, signals output by the data acquisition cabinet 49 are transmitted to the control cabinet 47 through the Ethernet-optical fiber-Ethernet converter 48, and a power amplification chamber 41 is arranged in the anechoic chamber 4.
The electric assembly 25 and the dynamometer 8 are both connected with cables for supplying power, and the outside of the cables is wrapped with a high-density shielding net 50.
The shielding control room 3 comprises a monitoring operation platform 40 and a control cabinet 47, the control cabinet 47 controls and receives signals of the antenna 37 in the anechoic chamber 2, the control cabinet 47 receives related signals of the electric assembly 25 through the CAN-optical fiber-CAN converter 39, and the control cabinet 47 receives signals of the data acquisition cabinet 49 and transmits the signals to the monitoring operation platform 40.
The shielding control room 3 comprises a monitoring operation platform 40 and a control cabinet 47, the control cabinet 47 controls and receives signals of the antenna 37 in the anechoic chamber 2, the control cabinet 47 receives related signals of the electric assembly 25 through the CAN-optical fiber-CAN converter 39, and the control cabinet 47 receives signals of the data acquisition cabinet 49 and transmits the signals to the monitoring operation platform 40.
When the electromagnetic compatibility loading test device is used, when the electromagnetic compatibility loading test of the electric assembly 25 is required, each module can be moved into the anechoic chamber 2, the test bed main body 1 is quickly assembled and assembled through the connecting plate 29, and the supporting column with the supporting column universal wheel 32 falls down to complete the falling position of the test bed main body 1; when the test is not needed, the test bed main body 1 is disassembled into three independent modules and is moved out of the anechoic chamber 2, and the anechoic chamber 2 can be used for other tests.
The power of the dynamometer 8 is turned through the right angle of the right-angle transmission box 11, the front face of the dynamometer 8 faces the antenna 37, and the dynamometer 8 is behind the right-angle transmission box 11 relative to the antenna 37, so that the metal reflecting surface is reduced.
The loading dynamometer 8 of the electric assembly 25 is arranged in the anechoic chamber 2 and can be arranged at any position in the anechoic chamber 2 along with the test bed main body 1, the movement is flexible, the requirement that the distance between a tested piece and the tops of wave-absorbing materials on the wall of the anechoic chamber is 1000mm can be met, and the problems of power shaft wall-through shielding and the like do not need to be considered.
The dynamometer 8, the right-angle transmission case 11 and other power parts are completely sealed by the electrically connected conductive brush 27 and the shielding cover, the cable for supplying power to the electric assembly 25 and the dynamometer 8 is wrapped by the high-density shielding net 50, and the electric assembly 25 is insulated relative to other parts, so that the influence of a power source electromagnetic field on the test is avoided.
The data signal is converted into optical fiber by a converter and passes through the anechoic chamber 2 through the optical fiber waveguide 38, so that the influence of the cable through the wall on the shielding effectiveness of the anechoic chamber 2 is solved.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (5)
1. A splicing type electric assembly electromagnetic compatibility loading test system in a darkroom comprises a test bed main body (1), an electric wave darkroom (2), a shielding control room (3), a silencing room (4) and a driving module bottom framework (15), wherein the test bed main body (1) comprises a tested piece module (5), a right driving module (6) and a left driving module (7), and is characterized in that a tested piece mounting base (30) is mounted at the bottom of the tested piece module (5), four universal wheels (32) with supporting columns are mounted at the lower end of the tested piece mounting base (30), the tested piece module (5) is fixedly arranged, a T-shaped groove is formed in the tested piece mounting base (30), a tested piece mounting support (31) is mounted on the tested piece mounting base (30), and an insulating damping cushion plate (34) is mounted between the tested piece mounting base (30) and the tested piece mounting support (31), an electric assembly (25) is mounted on the tested piece mounting bracket (31), and the tested piece module (5) is connected with the right driving module (6) and the left driving module (7) through a connecting plate (29) to be assembled into a test bed main body (1); the right driving module (6) comprises a dynamometer (8), a driving module bottom plate (9), an insulating elastic coupling (10), a right-angle transmission box (11), a synchronous belt (12), a ball cage shaft system (26), a ball cage coupling (23) and a tooling spline shaft (24), wherein the driving force of the dynamometer (8) is transmitted to the right-angle transmission box (11) through the insulating elastic coupling (10), the power transmission direction is changed, the power is transmitted to the upper ball cage shaft system (26) through a synchronous belt wheel (13) and the synchronous belt (12), and is transmitted to an electric assembly (25) through the ball cage coupling (23) and the tooling spline shaft (24); the ball cage shaft system (26) is supported by a small bearing seat (20), the ball cage shaft system (23) is connected through an insulating elastic coupling (10), the ball cage shaft coupling (23) is supported by a large bearing seat (22), the small bearing seat (20) and the large bearing seat (22) are both installed on an arch door base (18), a small protective cover (19) is installed outside the small bearing seat (20), a large protective cover (21) is installed outside the large bearing seat (22), a right-angle transmission box (11) is installed under the arch door base (18), an insulating shock absorption base plate (34) is installed between the large bearing seat (22) and the arch door base (18), a dynamometer (8), the right-angle transmission box (11) and the arch door base (18) are both installed on a driving module base plate (9), a dynamometer (8) peripheral dynamometer shielding cover (28) is installed on the dynamometer (8), a synchronous belt shielding cover (17) is installed outside the synchronous belt (12), the conductive brush (27) is mounted on the ball cage shaft system (26), and the ball cage shaft system (26), the small bearing seat (20), the dynamometer shielding cover (28), the synchronous belt shielding cover (17) and the driving module bottom plate (9) are electrically connected through the conductive brush (27); install between drive module bottom plate (9) and drive module bottom frame (15) bottom plate guide rail (14), drive module bottom plate (9) are along the axial displacement of ball cage shaft coupling (23), adjust the wheel base of electronic assembly (25), through bottom frame guide rail (33) and locking slider (16) fixed drive module bottom plate (9), four take support column universal wheel (32) are installed to drive module bottom frame (15) lower extreme, and the same and symmetrical mirror image distribution of structure of right drive module (6) and left drive module (7) is by test piece module (5).
2. The load-bearing test system for the electromagnetic compatibility of the splicing type electric assembly in the darkroom as claimed in claim 1, wherein the darkroom (2) comprises a wave-absorbing wedge (35), an antenna (37), a shielding collection box (36) and an optical fiber waveguide (38), the wave-absorbing wedge (35) is installed on a shielding metal wall of the darkroom (2), the antenna (37) is installed towards the electric assembly (25) to be tested, and the shielding collection box (36) is installed below an elevated floor and used for collecting the temperature, the rotating speed, the torque and the power signals of the dynamometer (8) and converting the collected signals into optical fiber signals which are transmitted to the data collection cabinet (49) through the optical fiber waveguide (38).
3. The darkroom splicing type electric assembly electromagnetic compatibility loading test system of claim 1, wherein the anechoic chamber (4) comprises a power supply simulator (44), a data acquisition cabinet (49), a frequency converter (46) and a cooler (45), the electric energy of the frequency converter (46) enters the darkroom (2) through the filter (42) to provide the dynamometer (8) with electric energy, the cooling liquid of the cooler (45) enters the darkroom (2) through the water waveguide (43) to provide the dynamometer (8) and the electric assembly (25) with cooling, the power supply simulator (44) enters the darkroom (2) through the filter (42) to provide the electric assembly (25) with electric energy, the data acquisition cabinet (49) acquires the flow, pressure and temperature signals of the cooler (45) and integrates the signals transmitted by the shielding acquisition box (36), and the signals output by the data acquisition cabinet (49) pass through the Ethernet-fiber-Ethernet converter (48) And the sound is transmitted to a control cabinet (47), and a power amplifier chamber (41) is arranged in the anechoic chamber (4).
4. The load-bearing testing system for the electromagnetic compatibility of the splicing type electric assembly in the darkroom as claimed in claim 1, wherein the electric assembly (25) and the dynamometer (8) are both connected with cables for supplying power, and the outside of the cables are both covered with a high-density shielding net (50).
5. The load-bearing test system for electromagnetic compatibility of the splicing type electric assembly in the darkroom as claimed in claim 1, wherein the shielding control room (3) comprises a monitoring console (40) and a control cabinet (47), the control cabinet (47) controls and receives signals of an antenna (37) in the darkroom (2), the control cabinet (47) receives related signals of the electric assembly (25) through a CAN-optical fiber-CAN converter (39), and the control cabinet (47) receives signals of a data acquisition cabinet (49) and transmits the signals to the monitoring console (40).
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| CN202010857470.5A CN111856194B (en) | 2020-08-24 | 2020-08-24 | Electric assembly electromagnetic compatibility loading test system spliced in darkroom |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111398817A (en) * | 2020-04-28 | 2020-07-10 | 安徽精科检测技术有限公司 | Electric assembly electromagnetic compatibility loading test bench placed in darkroom |
| CN111398818A (en) * | 2020-04-29 | 2020-07-10 | 安徽精科检测技术有限公司 | Electromagnetic compatibility loading test system compatible with motor and electric assembly |
| CN111398819A (en) * | 2020-04-30 | 2020-07-10 | 安徽精科检测技术有限公司 | General loading test system for electromagnetic compatibility of power systems of commercial vehicle and passenger vehicle |
| CN212459908U (en) * | 2020-08-24 | 2021-02-02 | 安徽精科检测技术有限公司 | Spliced electric assembly electromagnetic compatibility loading test system in darkroom |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112731013A (en) * | 2020-12-17 | 2021-04-30 | 温州大学乐清工业研究院 | Anechoic chamber AC/DC multi-magnetic circuit device for detecting low-voltage electrical appliance products |
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