CN109900987B - Multifunctional decoupling network - Google Patents
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- CN109900987B CN109900987B CN201910188513.2A CN201910188513A CN109900987B CN 109900987 B CN109900987 B CN 109900987B CN 201910188513 A CN201910188513 A CN 201910188513A CN 109900987 B CN109900987 B CN 109900987B
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Abstract
The invention provides a multifunctional decoupling network, comprising: a housing main body; a parallel decoupling switching interface which is arranged on the shell main body and is used as a switching port for parallel decoupling between different wire harnesses; the U-shaped short-circuit terminal is used for realizing short-circuit interconnection between two different parallel jacks of the parallel decoupling switching interface; the input interface is arranged on the shell main body and is used for being connected with the power supply equipment; the output interface is arranged on the shell main body and is used for being connected with the tested equipment; the input interface and the output interface are connected in the shell main body in a one-to-one correspondence mode through metal wires. According to the invention, corresponding parallel jacks can be connected in a short circuit manner by using the corresponding number of U-shaped short circuit terminals according to the number of decoupling circuits required by different power supply types, decoupling states are switched, decoupling networks with different circuit numbers and different structures are formed, and a tested circuit of an electromagnetic compatibility conduction test is accessed, so that a rapid and convenient test system is built, and the consistency of test results is improved.
Description
Technical Field
The invention relates to the technical field of electromagnetic compatibility tests, in particular to a multifunctional decoupling network.
Background
The purpose of the electromagnetic compatibility test is to assess the ability of systems, devices to work in coordination with external systems, devices or electromagnetic environments without interfering with each other. In the electromagnetic compatibility test, when an applied interference signal is conducted to test a device under test, a corresponding decoupling network is usually required to guide a transmission path of the interference signal to form a transmission loop of the interference signal, and to decouple the interference signal for a device or a system outside a test system. For example, the aviation radio technology Committee Standard RTCA/DO-160G defines a suite of laboratory test methods for an aircraft to determine whether a subject meets specified performance criteria under simulated environmental conditions. In the peak voltage test of chapter seventeenth, the standard does not specifically define a dc or ac decoupling network required by the test, so in the implementation of the test, the test system is tedious to set up and takes long time, the consistency of the test result is low, the accuracy of the test result is affected, and even a safety accident is easily caused by wrong connection of cables.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a multifunctional decoupling network, which is used for conducting wire decoupling and forming an interference signal transmission loop in an electromagnetic compatibility conduction test, is suitable for the requirements of the decoupling network in the seventeenth peak voltage test in the standard RTCA/DO-160G of the aviation radio technical committee, and has the advantages of simple construction of a test system and good consistency of test results.
In order to solve the above technical problem, a technical solution of the present invention is to provide a multifunctional decoupling network, which is characterized in that: comprises that
A housing main body;
the parallel decoupling switching interface is arranged on the shell main body and is used as a switching port for parallel decoupling among different wire harnesses;
the U-shaped short-circuit terminal is used for realizing short-circuit interconnection between two different parallel jacks of the parallel decoupling switching interface;
the input interface is arranged on the shell main body and is used for being connected with power supply equipment;
the output interface is arranged on the shell main body and is used for being connected with the tested equipment;
the input interface and the output interface are connected in the shell main body in a one-to-one correspondence mode through metal wires.
Preferably, the housing of the housing main body is made of a non-metal material.
Preferably, the parallel decoupling switching interface comprises nine parallel jacks forming a 3 × 3 array;
the nine parallel jacks are a first parallel jack, a second parallel jack, a third parallel jack, a fourth parallel jack, a fifth parallel jack, a sixth parallel jack, a seventh parallel jack, an eighth parallel jack and a ninth parallel jack in sequence;
the first parallel jack and the fifth parallel jack are interconnected through a first decoupling capacitor, the second parallel jack and the sixth parallel jack are interconnected through a second decoupling capacitor, the third parallel jack and the fourth parallel jack are interconnected through a third decoupling capacitor, and the seventh parallel jack, the eighth parallel jack and the ninth parallel jack are sequentially connected in series.
Preferably, the U-shaped short circuit terminal is a U-shaped metal plug provided with an insulating protection layer at the outer part, and the size of the U-shaped metal plug is matched with that of the parallel jack.
More preferably, the input interface comprises four input jacks, namely an input jack a, an input jack B, an input jack C and an input jack N in sequence;
the output interface comprises four output jacks, namely an output jack A, an output jack B, an output jack C and an output jack N in sequence;
the input jack A, the input jack B, the input jack C and the input jack N are respectively connected with the output jack A, the output jack B, the output jack C and the output jack N through metal wires in a one-to-one correspondence manner;
the first parallel jacks are connected in parallel to the metal lead between the input jack A and the output jack A through metal leads;
the second parallel jack is connected to the metal wire between the input jack B and the output jack B in parallel through the metal wire;
the third parallel jack is connected to the metal wire between the input jack C and the output jack C in parallel through the metal wire;
and the ninth parallel jack is connected to the metal wire between the input jack N and the output jack N in parallel through the metal wire.
Preferably, the parallel jack, the input jack and the output jack are all embedded metal connecting holes.
Preferably, the input interface is connected with a power supply, and the output interface is connected with a power interface of the device under test; and according to the quantity requirement of the decoupling lines, corresponding parallel jacks are connected in a short circuit manner and interconnected by using the corresponding quantity of the U-shaped short circuit terminals, so that decoupling networks with different line quantities and different structures are formed.
The invention also provides an application of the multifunctional decoupling network in an alternating current single-phase or direct current power supply equipment test, which is characterized in that: the fifth parallel jack and the eighth parallel jack are connected in a short circuit mode through a U-shaped short circuit terminal, the input jack A is connected with an L line of an alternating current power supply or the positive pole of a direct current power supply, and the output jack A is connected with the L line of the alternating current power supply or the positive pole of the direct current power supply of the tested equipment; the input jack N is connected with an N line of an alternating current power supply or a negative pole of a direct current power supply, the output jack N is connected with an N line of the alternating current power supply or a negative pole of the direct current power supply of the tested equipment, and the output jack N is used for an electromagnetic compatibility conduction test of alternating current single-phase or direct current power supply equipment and meets the decoupling requirement of the alternating current single-phase or direct current power supply of the standard RTCA/DO-160G.
The invention also provides an application of the multifunctional decoupling network in a three-phase Y-type power supply equipment test, which is characterized in that: the fourth parallel jack and the seventh parallel jack, the fifth parallel jack and the eighth parallel jack, and the sixth parallel jack and the ninth parallel jack are respectively connected with each other in a short circuit manner through a U-shaped short circuit terminal, the input jack A is connected with an L1 line of an alternating current power supply, and the output jack A is connected with an L1 line of a power supply of tested equipment; the input jack B is connected with an L2 line of an alternating current power supply, and the output jack B is connected with a power supply L2 line of the tested equipment; the input jack C is connected with an L3 line of an alternating current power supply, and the output jack C is connected with a power supply L3 line of the tested equipment; the input jack N is connected with an N line of an alternating current power supply, the output jack N is connected with a power supply N line of the tested equipment, and the output jack N is used for an electromagnetic compatibility conduction test of three-phase Y-shaped power supply equipment and meets the decoupling requirement of the standard RTCA/DO-160G three-phase Y-shaped alternating current power supply.
The invention also provides an application of the multifunctional decoupling network in a three-phase delta-shaped power supply equipment test, which is characterized in that: the first parallel jack and the fourth parallel jack, the second parallel jack and the fifth parallel jack, and the third parallel jack and the sixth parallel jack are respectively connected with each other in a short circuit mode through a U-shaped short circuit terminal, the input jack A is connected with an L1 line of an alternating current power supply, and the output jack A is connected with a power supply L1 line of tested equipment; the input jack B is connected with an L2 line of an alternating current power supply, and the output jack B is connected with a power supply L2 line of the tested equipment; the input jack C is connected with an L3 line of an alternating current power supply, the output jack C is connected with a power supply L3 line of the tested equipment, and the input jack C is used for an electromagnetic compatibility conduction test of three-phase delta-shaped power supply equipment and meets the decoupling requirement of the three-phase delta-shaped alternating current power supply of the standard RTCA/DO-160G.
The multifunctional decoupling network provided by the invention overcomes the defects of the prior art, can use corresponding number of U-shaped short-circuit terminals to connect corresponding parallel jacks in short circuit and interconnect according to the number of decoupling lines required by different power supply types, switches decoupling states, forms decoupling networks with different line numbers and different structures, is accessed to a tested circuit of an electromagnetic compatibility conduction test, provides quick and convenient test system construction, and improves the consistency of test results.
Drawings
Fig. 1 is a schematic diagram of an external structure of a multifunctional decoupling network provided in this embodiment;
fig. 2 is a schematic diagram of an internal structure of the multifunctional decoupling network provided in this embodiment;
FIG. 3 is a schematic diagram of a multifunctional decoupling network for testing of AC single-phase or DC power equipment;
FIG. 4 is a schematic diagram of a multifunctional decoupling network used for a three-phase Y-type power supply equipment test;
fig. 5 is a schematic diagram of a multifunctional decoupling network used for a three-phase delta power supply device test.
Detailed Description
The invention will be further illustrated with reference to the following specific examples.
Example 1
Fig. 1 is a schematic diagram of an external structure of the multifunctional decoupling network provided in this embodiment, where the multifunctional decoupling network is composed of a housing main body 100, a parallel decoupling switching interface 200, a U-shaped shorting terminal 300, an input interface 400, an output interface 500, and the like.
The housing body 100 is a cube, and the housing is made of a low-k non-metal material.
The parallel decoupling switching interface 200 includes nine parallel jacks, which are a 3 × 3 array and are switching ports for parallel decoupling between different wire harnesses.
The U-shaped short circuit terminal 300 is a U-shaped metal plug with an insulating protective layer outside, the size of the U-shaped metal plug is matched with that of the parallel jacks, and the U-shaped short circuit terminal is used for short circuit interconnection between two different parallel jacks.
Referring to fig. 2, the nine parallel jacks include a parallel jack 1, a parallel jack 2, a parallel jack 3, a parallel jack 4, a parallel jack 5, a parallel jack 6, a parallel jack 7, a parallel jack 8 and a parallel jack 9 in sequence, wherein the parallel jack 1 and the parallel jack 5 are interconnected by a decoupling capacitor 10, the parallel jack 2 and the parallel jack 6 are interconnected by a decoupling capacitor 11, the parallel jack 3 and the parallel jack 4 are interconnected by a decoupling capacitor 12, and three parallel jacks of the parallel jack 7, the parallel jack 8 and the parallel jack 9 are connected in series to form reliable electrical connection.
The parallel jacks 1-9 are embedded metal connecting holes.
The decoupling capacitors 10-12 are usually 10 muF, and can meet the requirements of the existing common standard.
The decoupling capacitors 10-12 can be piezoresistors, diodes or transient suppression diodes and other decoupling filter devices, and are used in test environments with different requirements.
The input interface 400 includes four input jacks 13, 14, 15, and 16 for connecting to a power supply device, and the numbers thereof are input jack a, input jack B, input jack C, and input jack N in sequence.
The input jacks 13, 14, 15 and 16 are embedded metal connecting holes.
The output interface 500 includes four output jacks 17, 18, 19, and 20 for connecting to the device under test, and the serial numbers of the output jacks are output jack a, output jack B, output jack C, and output jack N in sequence.
The output jacks 17, 18, 19 and 20 are embedded metal connecting holes.
The input interface 400 and the output interface 500 are inside the housing main body 100, and the input jack a, the input jack B, the input jack C, and the input jack N are respectively in one-to-one correspondence with the output jack a, the output jack B, the output jack C, and the output jack N, and are electrically connected using metal wires.
The parallel jack 1 is connected in parallel to a connecting wire between the input jack A and the output jack A by using a metal wire;
the parallel jack 2 is connected in parallel to a connecting wire between the input jack B and the output jack B by using a metal wire;
the parallel jack 3 is connected in parallel to a connecting wire between the input jack C and the output jack C by using a metal wire;
the parallel jack 9 is connected in parallel to a connection wire between the input jack N and the output jack N using a metal wire.
The multifunctional decoupling network provided by the embodiment can be used for interconnecting corresponding parallel jacks in a short circuit mode through the U-shaped short circuit terminals 300 in corresponding quantity according to the quantity requirement of decoupling circuits to form decoupling networks in different circuit quantities and different structures, and the decoupling networks are connected into a tested circuit of an electromagnetic compatibility conduction test, so that a quick and convenient test system is built, and the consistency of test results is improved.
Example 2
Based on the multifunctional decoupling network of embodiment 1, as shown in fig. 3, which is a schematic diagram of the multifunctional decoupling network used for testing of ac single-phase or dc power supply equipment, the parallel jack 5 and the parallel jack 8 are connected in short circuit with each other through a U-shaped short circuit terminal 21, and at this time, a capacitor 10 of 10 μ F is connected in parallel between the a line and the N line of the network, so as to form a radio frequency signal loop. Connecting the input jack A (13) with the L line of an alternating current power supply or the positive pole of a direct current power supply, and connecting the output jack A (17) with the L line of the alternating current power supply or the positive pole of the direct current power supply of the tested equipment; the input jack N (16) is connected with the N line of an alternating current power supply or the negative pole of a direct current power supply, the output jack N (20) is connected with the N line of the power supply of the tested equipment or the negative pole of the direct current power supply, the electromagnetic compatibility conduction test of alternating current single-phase or direct current power supply equipment is used, and the decoupling requirement of the alternating current single-phase or direct current power supply of the standard RTCA/DO-160G is met.
Example 3
Based on the multifunctional decoupling network of embodiment 1, as shown in fig. 4, a schematic diagram of the multifunctional decoupling network for a three-phase Y-type power supply device test is shown, a parallel jack 4 and a parallel jack 7, a parallel jack 5 and a parallel jack 8, and a parallel jack 6 and a parallel jack 9 are respectively short-circuited and interconnected through U-shaped short-circuit terminals 22, 21 and 23, capacitors 10, 11 and 12 of 10 μ F are respectively connected in parallel between a line a and a line N, between a line B and a line N, and between a line C and a line N of the network at this time, an input jack a (13) is connected with a line L1 of an alternating current power supply, and an output jack a (17) is connected with a line L1 of a power supply of a device under test; connecting the input jack B (14) with an L2 line of an alternating current power supply, and connecting the output jack B (18) with a power supply L2 line of the tested equipment; connecting the input jack C (15) with an L3 line of an alternating current power supply, and connecting the output jack C (19) with a power supply L3 line of the tested equipment; the input jack N (16) is connected with an N line of an alternating current power supply, the output jack N (20) is connected with a power supply N line of the tested equipment, the electromagnetic compatibility conduction test of the three-phase Y-shaped power supply equipment is used, and the decoupling requirement of the three-phase Y-shaped alternating current power supply of the standard RTCA/DO-160G is met.
Example 4
Based on the multifunctional decoupling network of embodiment 1, as shown in fig. 5, a schematic diagram of the multifunctional decoupling network for a three-phase delta-type power supply device test is shown, a parallel jack 1 and a parallel jack 4, a parallel jack 2 and a parallel jack 5, and a parallel jack 3 and a parallel jack 6 are respectively short-circuited and interconnected through U-shaped short-circuit terminals 22, 21 and 23, at this time, capacitors 10, 11 and 12 of 10 μ F are respectively connected in parallel between a line a and a line B, between a line B and a line C, and between a line C and a line a of the network, an input jack a (13) is connected with a line L1 of an alternating current power supply, and an output jack a (17) is connected with a line L1 of a power supply of a device under test; connecting the input jack B (14) with an L2 line of an alternating current power supply, and connecting the output jack B (18) with a power supply L2 line of the tested equipment; the input jack C (15) is connected with an L3 line of an alternating current power supply, the output jack C (19) is connected with a power supply L3 line of the tested equipment, the electromagnetic compatibility conduction test of the three-phase delta type power supply equipment is used, and the decoupling requirement of the three-phase delta type alternating current power supply of the standard RTCA/DO-160G is met.
While the invention has been described with respect to a preferred embodiment, it will be understood by those skilled in the art that the foregoing and other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention. Those skilled in the art can make various changes, modifications and equivalent arrangements, which are equivalent to the embodiments of the present invention, without departing from the spirit and scope of the present invention, and which may be made by utilizing the techniques disclosed above; meanwhile, any changes, modifications and variations of the above-described embodiments, which are equivalent to those of the technical spirit of the present invention, are within the scope of the technical solution of the present invention.
Claims (9)
1. A multifunctional decoupling network, characterized by: comprises that
A housing main body (100);
a parallel decoupling switching interface (200) provided on the housing main body (100) and serving as a switching port for parallel decoupling between different wire harnesses;
a U-shaped shorting terminal (300) for enabling shorting interconnection between two different parallel jacks of the parallel decoupled switching interface (200);
an input interface (400) provided on the housing main body (100) for connecting with a power supply device;
an output interface (500) arranged on the shell main body (100) and used for connecting with a tested device;
the input interface (400) and the output interface (500) are connected through metal wires in the shell main body (100) in a one-to-one correspondence manner;
the parallel decoupling switching interface (200) comprises nine parallel jacks to form a 3 x 3 array;
the nine parallel jacks are a first parallel jack (1), a second parallel jack (2), a third parallel jack (3), a fourth parallel jack (4), a fifth parallel jack (5), a sixth parallel jack (6), a seventh parallel jack (7), an eighth parallel jack (8) and a ninth parallel jack (9) in sequence;
the first parallel jack (1) is connected with the fifth parallel jack (5) through a first decoupling capacitor (10), the second parallel jack (2) is connected with the sixth parallel jack (6) through a second decoupling capacitor (11), the third parallel jack (3) is connected with the fourth parallel jack (4) through a third decoupling capacitor (12), and the seventh parallel jack (7), the eighth parallel jack (8) and the ninth parallel jack (9) are sequentially connected in series.
2. A multifunctional decoupling network as in claim 1 wherein: the shell of the shell main body (100) is made of nonmetal materials.
3. A multifunctional decoupling network as in claim 1 wherein: the U-shaped short circuit terminal (300) is a U-shaped metal plug with an insulating protective layer arranged outside, and the size of the U-shaped metal plug is matched with that of the parallel jacks.
4. A multifunctional decoupling network as in claim 3 wherein: the input interface (400) comprises four input jacks, namely an input jack A, an input jack B, an input jack C and an input jack N in sequence;
the output interface (500) comprises four output jacks, namely an output jack A, an output jack B, an output jack C and an output jack N in sequence;
the input jack A, the input jack B, the input jack C and the input jack N are respectively connected with the output jack A, the output jack B, the output jack C and the output jack N through metal wires in a one-to-one correspondence manner;
the first parallel jack (1) is connected to a metal wire between the input jack A and the output jack A in parallel through a metal wire;
the second parallel jack (2) is connected to the metal wire between the input jack B and the output jack B in parallel through the metal wire;
the third parallel jack (3) is connected in parallel to the metal wire between the input jack C and the output jack C through the metal wire;
and the ninth parallel jack (9) is connected to the metal wire between the input jack N and the output jack N in parallel through the metal wire.
5. A multifunctional decoupling network as in claim 4 wherein: the parallel jacks, the input jacks and the output jacks are all embedded metal connecting holes.
6. A multifunctional decoupling network as in claim 5 wherein: the input interface (400) is connected with a power supply, the output interface (500) is connected with a power supply interface of the tested equipment, and corresponding parallel jacks are connected in a short circuit manner and interconnected in a short circuit manner by using the corresponding number of U-shaped short-circuit terminals (300) according to the number requirement of decoupling circuits, so that decoupling networks with different circuit numbers and different structures are formed.
7. Use of a multifunctional decoupling network according to any of claims 4 to 6 in testing of AC single-phase or DC power supply equipment, characterized in that: the fifth parallel jack (5) and the eighth parallel jack (8) are connected in a short circuit mode through a U-shaped short circuit terminal, the input jack A is connected with an L line of an alternating current power supply or the positive pole of a direct current power supply, and the output jack A is connected with an L line of a power supply of the tested equipment or the positive pole of the direct current power supply; the input jack N is connected with the N line of an alternating current power supply or the negative pole of a direct current power supply, the output jack N is connected with the N line of the power supply of the tested equipment or the negative pole of the direct current power supply, the electromagnetic compatibility conduction test of alternating current single-phase or direct current power supply equipment is used, and the decoupling requirement of the alternating current single-phase or direct current power supply of the standard RTCA/DO-160G is met.
8. Use of a multifunctional decoupling network according to any of claims 4 to 6 in a three-phase Y-supply equipment test, characterized in that: the fourth parallel jack (4), the seventh parallel jack (7), the fifth parallel jack (5), the eighth parallel jack (8), the sixth parallel jack (6) and the ninth parallel jack (9) are respectively connected with each other in a short circuit mode through a U-shaped short circuit terminal, the input jack A is connected with an L1 line of an alternating current power supply, and the output jack A is connected with an L1 line of a power supply of tested equipment; the input jack B is connected with an L2 line of an alternating current power supply, and the output jack B is connected with a power supply L2 line of the tested equipment; the input jack C is connected with an L3 line of an alternating current power supply, and the output jack C is connected with a power supply L3 line of the tested equipment; the input jack N is connected with an N line of an alternating current power supply, the output jack N is connected with a power supply N line of the tested equipment, and the output jack N is used for an electromagnetic compatibility conduction test of three-phase Y-shaped power supply equipment and meets the decoupling requirement of the standard RTCA/DO-160G three-phase Y-shaped alternating current power supply.
9. Use of a multifunctional decoupling network according to any of claims 4 to 6 in a three-phase delta power supply equipment test, characterized in that: the first parallel jack (1) and the fourth parallel jack (4), the second parallel jack (2) and the fifth parallel jack (5), and the third parallel jack (3) and the sixth parallel jack (6) are respectively connected in short circuit through a U-shaped short circuit terminal, the input jack A is connected with an L1 line of an alternating current power supply, and the output jack A is connected with a power supply L1 line of tested equipment; the input jack B is connected with an L2 line of an alternating current power supply, and the output jack B is connected with a power supply L2 line of the tested equipment; the input jack C is connected with an L3 line of an alternating current power supply, the output jack C is connected with a power supply L3 line of the tested equipment, and the input jack C is used for an electromagnetic compatibility conduction test of three-phase delta-shaped power supply equipment and meets the decoupling requirement of the three-phase delta-shaped alternating current power supply of the standard RTCA/DO-160G.
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