CN215833509U - Impedance device and surge test system - Google Patents
Impedance device and surge test system Download PDFInfo
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- CN215833509U CN215833509U CN202120756370.3U CN202120756370U CN215833509U CN 215833509 U CN215833509 U CN 215833509U CN 202120756370 U CN202120756370 U CN 202120756370U CN 215833509 U CN215833509 U CN 215833509U
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Abstract
The embodiment of the utility model relates to the field of testing, and discloses an impedance device and a surge testing system. The application includes: the device comprises a surge input port, a test port, a plurality of first resistors with different resistance values and a first selection port; through setting up the first resistance that has a plurality of different resistances, different first resistance is equivalent to the impedance size of the cable under different environment, when surging test to equipment under test, can choose to be connected first selection port and one of them first resistance, first resistance of first resistance module switches on promptly, when equipment under test need simulate the surge test under another environment, only with first selection port be connected to another satisfy the first resistance of test requirement can, can carry out the surge test of multiple environment through an impedance device, easy operation has just saved impedance device's cost.
Description
Technical Field
The embodiment of the utility model relates to the field of testing, in particular to an impedance device and a surge testing system.
Background
At present, electronic equipment is generally used in life, when thunder weather occurs, it is inevitable that thunder hits an outdoor line, if the electronic equipment cannot bear lightning surge transmitted from the outdoor line, the electronic equipment fails, and the use of a user is influenced, so that the simulation test of the lightning surge of the electronic equipment is very important.
The simulation test process in the related art uses a lightning simulation generator, which is connected to the device under test through an impedance device, and an impedance device for simulating the impedance of the cable to which the device under test is actually connected. However, the impedance device in the related art is designed only for the impedance of a cable of a certain specific model connected to the electronic device, the cables connected to the electronic device in different environments may be different, and the corresponding impedances are different, when the electronic device needs to perform a surge test in multiple environments, a plurality of impedance devices need to be respectively used for performing an analog test, and the impedance devices are switched.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model aims to provide an impedance device and a surge testing system, so that surge testing in various environments can be performed through one impedance device, the detection efficiency is improved, and the cost is saved.
To solve the above technical problem, an embodiment of the present invention provides an impedance device, including: the device comprises a surge input port, a test port, a plurality of first resistors with different resistance values and a first selection port; first ends of the first resistors are connected to the test port; the first selection port is selectively connected with the second end of one of the first resistors; the first selection port is connected with the surge input port.
The embodiment of the utility model also provides a surge testing system, which comprises a surge simulation generator, tested equipment and the impedance device; the surge simulation generator is connected with the surge input port, and the tested device is connected with the test port.
Compared with the related art, the surge testing device has the advantages that the first resistors with the different resistance values are arranged, the different first resistors are equivalent to the impedance of cables under different environments, when the surge testing is carried out on the tested equipment, the first selection port can be selectively connected with one of the first resistors, namely one first resistor of the first resistor module is conducted, when the tested equipment needs to simulate the surge testing under another environment, only the first selection port is connected to the other first resistor meeting the testing requirement, the surge testing under various environments can be carried out through one impedance device, the operation is simple, and the cost of the impedance device is saved.
In addition, the impedance device further includes: a plurality of second resistors, a second select port; first ends of the plurality of second resistors are connected to the first selection port; the second selection port is selectively connected with the second end of one of the second resistors; the second selection port is connected with the surge input port.
In addition, the impedance device further includes: an electrical box; the first resistor is arranged inside the electric appliance box; the surge input port, the test port, the second end of the first resistor and the first selection port are all arranged on the outer surface of the electrical box.
In addition, the impedance device also comprises a first communication port and a second communication port; the first communication port and the second communication port are both arranged on the outer surface of the electrical box; the first communication port is connected with the tested equipment, and the first communication port is also connected with the second communication port; the second communication port is also connected with auxiliary equipment.
In addition, the impedance device further comprises a filtering module; the filtering module is arranged between the first communication port and the second communication port.
In addition, the electric appliance box is a cuboid; the first communication port and the second communication port are arranged on two opposite surfaces of the electric appliance box; the second end of the first resistor and the first selection port are arranged on the same surface of the electric appliance box.
In addition, the first selection port is connected with the second end of the first resistor through a single-pole multi-throw switch.
In addition, the first selection port is connected with the second end of the first resistor through an electronic switch.
In addition, the number of the test ports is multiple.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
Fig. 1 is a schematic circuit diagram of an impedance device according to an embodiment of the present application;
fig. 2 is a schematic circuit diagram of an impedance device according to an embodiment of the present application;
FIG. 3 is a schematic diagram of an external structure of an impedance device according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a circuit configuration of an impedance device according to another embodiment of the present application;
fig. 5 is a schematic circuit diagram of an impedance device according to another embodiment of the present application;
FIG. 6 is a schematic diagram of an external structure of an impedance device according to another embodiment of the present application;
FIG. 7 is a schematic diagram of a connection between a first communication port and a second communication port according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a surge testing system according to a second embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the utility model, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments. The following embodiments are divided for convenience of description, and should not constitute any limitation to the specific implementation manner of the present invention, and the embodiments may be mutually incorporated and referred to without contradiction.
One embodiment of the present invention relates to an impedance device, as shown in fig. 1, comprising: surge input port HV, test port m, a plurality of first resistors R1, first selection port b1(ii) a The plurality of first resistors R1 have different resistance values, for example, 5 ohms, 10 ohms, 25 ohms, and the like.
Specifically, first ends of a plurality of first resistors R1 are connected to the test port m; first selection port b1Optionally with the second terminal a of one of the first resistors R11Connecting; first selection port b1Connected to the surge input port HV.
It should be noted that, in fig. 1, the number of the first resistors R1 connected to the test port m is three, and in practical applications, a plurality of first resistors R1 may be further connected in parallel, so as to cover a large number of resistance values.
Lightning surge firstly hits outdoor cable, and then in transmitting to electronic equipment through outdoor cable, the operation of influence resistance equipment. The first resistor R1 in this embodiment is equivalent to the resistance of the cable, and the external environment (cable) where the device under test is located has a certain specification, and the resistance value of the cable can be obtained according to the specification, and a resistor can be equivalent in the impedance device, thereby simulating the real environment of the device under test. Certainly, the device to be tested is in different external environments, and the resistance values of the corresponding cables are different, so that after the resistance value of the cable in the external environment is determined, one first resistor R1 corresponding to the resistance value can be selected from the plurality of first resistors R1 to be connected, and then corresponding detection is performed.
The embodiment is provided with the first resistors with different resistors, different first resistors are equivalent to the impedance of cables in different environments, when the surge test is performed on the tested device, the first selection port can be selectively connected with one of the first resistors, namely, one first resistor of the first resistor module is switched on, when the tested device needs to simulate the surge test in another environment, only the first selection port is connected to the other first resistor meeting the test requirement, the surge test in various environments can be performed through one impedance device, the operation is simple, and the cost of the impedance device is saved.
In one embodiment, the number of test ports m is plural. As shown in fig. 2, which is a schematic circuit diagram of the impedance device of this embodiment, the number of the test ports m is multiple, each test port m is connected to a plurality of first resistors R1 with different resistances, and the first selection port b1Optionally with the second terminal a of one of the first resistors R11Connecting; each first selection port b1Are connected to the surge input port HV.
In one embodiment, the impedance device further comprises: an electrical box; the first resistor R1 is arranged inside the electric appliance box; surge input port HV, test port m, second end a of first resistor R11First selection port b1Are all arranged on the outer surface of the electrical box. In the embodiment, each electric appliance is protected by arranging the electric appliance box. The first resistor R1 may be a metal-mold resistor.
As shown in fig. 3, which is a schematic structural diagram of the exterior of the impedance device of the present embodiment, the test port m is disposed on the outer surface of the electrical box and is used for connecting with a device under test; the surge input port HV is used for being connected with the surge simulation generator; second end a of first resistor R11First selection port b1Is arranged on the outer surface of the electrical box, and when in test, a first resistor R1 with proper resistance value is selected to select the first port b1Connected to the second end a of the first resistor R1 corresponding to the first resistor R11。
As can be known from fig. 3, the surface of the electrical box includes a plurality of test ports m, in practical application, only a part of the test ports m may be connected to the device under test, and all the test ports m may also be connected to the device under test.
In one embodiment, the appliance box is a cuboid.
In one embodiment, the second end a of the first resistor R11And a first selection port b1Arranged on the same surface of the electrical box, as shown in fig. 2, the second end a of the first resistor R11And a first selection port b1The setting also can set up in the side at the upper surface of the electrical apparatus box of cuboid, can connect different resistances in the one side of the electrical apparatus box of cuboid through the setting of the position of speaking, and convenience of customers connects according to each port.
In practical application, the second end a of each first resistor R1 is arranged on the upper surface of the rectangular electric appliance box1And a first selection port b1The structure of the composition may be arranged in a row, or may be arranged in an array form as required, and this embodiment is not limited; of course, the second end a of the first resistor R1 is different for easy identification1And a first selection port b1And corresponding numbers can be set at the positions of the ports, so that the use by users is facilitated.
In one embodiment, the first selection port b1Connected to a second terminal of the first resistor R1 through a single pole, multiple throw switch. The embodiment is realized by selecting the port b at the first selection port1A single-pole multi-throw switch is arranged with the second ends of the plurality of first resistors R1 to realize the first selection port b1Selectively connected with the second end a of the first resistor R11And (4) connecting.
In one embodiment, the first selection port b1Through an electronic switch and a second end a of a first resistor R11And (4) connecting. The embodiment realizes the first selection port b through an electronic switch, namely, an automatic mode1And is selectively connected with the second end of the first resistor R1, thereby being more convenient for users to use.
In one embodiment, the impedance device further comprises: a plurality of second resistors, a second selection port.
As shown in fig. 4, which is a circuit structure diagram of the impedance device of the present embodiment, the impedance device of the present embodiment includes: surge input port HV, test port m, a plurality of first resistors R1, first selection port b1A plurality of second resistors R2, a second selection port b2(ii) a The plurality of second resistors R2 have different resistance values, for example, 5 ohms, 10 ohms, 25 ohms, and the like.
Specifically, first ends of a plurality of first resistors R1 are connected to the test port m; first selection port b1Optionally with the second terminal a of one of the first resistors R11Connecting; first ends of a plurality of second resistors R2 are connected to the first selection port b1(ii) a Second selection port b2Optionally, the second end a of one of the second resistors R22Connecting; second selection port b2Connected to the surge input port HV.
Note that, fig. 4 shows the first selection port b1The number of the connected second resistors R2 is three, and in practical application, a plurality of second resistors R2 can be connected in parallel continuously, so that a plurality of resistance values are covered.
In this embodiment, the port b is selected by setting and selecting the first port1The connected second resistors R2 can be combined with the second resistor R2 and the first resistor R1 differently to obtain more resistor values, and the resistor value range is wide by setting the resistors as few as possible.
As shown in fig. 5, which is a schematic circuit diagram of the impedance device of this embodiment, the number of the test ports m is multiple, each test port m is connected to a plurality of first resistors R1 with different resistances, and the first selection port b1Optionally with the second terminal a of one of the first resistors R11Connecting; the first ends of a plurality of second resistors R2 with different resistance values are connected to the first selection port b1(ii) a Second selection port b2Optionally, the second end a of one of the second resistors R22Connecting; each second selection port b2Are connected to the surge input port HV.
In one embodiment, the impedance device may also comprise an electrical applianceThe box, as shown in fig. 6, is a schematic diagram of the external structure of the impedance device of this embodiment, and the electronic devices such as the first resistor R1 and the second resistor R2 are all disposed inside the electrical box, and the various ports such as the test port m, the surge input port HV, and the second end a of the first resistor are disposed inside the electrical box1First selection port b1A second end a of the second resistor2A second selection port b2Is arranged on the surface of the electric appliance box. Specifically, the electrical box bit is rectangular, and the first resistor R1 and the second resistor R2 are metal mold resistors.
It should be noted that, in the present embodiment, the second end a of the second resistor R22A second selection port b2Disposed on the same surface, and further, a second end a of each second resistor R22A second selection port b2The structures may be arranged side by side, or may be in a matrix arrangement form, and this embodiment is not particularly limited.
In practical application, the second end a of the first resistor1First selection port b1And a second end a of the second resistor R22A second selection port b2The LED lamp can be arranged on the same surface or different surfaces, and can be arranged according to actual requirements. Meanwhile, the number can be carried out at the position of each interface, so that the use by a user is facilitated.
In one embodiment, each of 8 test ports m is divided into a branch, and each branch forms a Local Area Network (LAN) test port. In practical application, the LAN interface is an interface with 8 branches, and when the device to be tested is connected to the impedance device through the LAN interface, the test can be realized only by connecting the LAN test port of the impedance device, so that the requirements of different test scenes are met, and the operation by a user is facilitated.
In one embodiment, the impedance device further comprises: a first communication port and a second communication port; the first communication port and the second communication port are both arranged on the outer surface of the electric appliance box; the first communication port is connected with the tested equipment and is also connected with the second communication port; the second communication port is also connected with auxiliary equipment.
In one embodiment, the impedance device further comprises a plurality of filtering modules; the filtering module is disposed between the first communication port c and the second communication port d. Specifically, as shown in fig. 7, a schematic diagram of a connection relationship between a first communication port C and a second communication port d is shown, wherein the filtering module includes an inductor L and a capacitor C; the first communication port c is connected with the first end of the inductor L, and the second end of the inductor L is connected with the second communication port d; the first end of the capacitor C is connected with the second end of the inductor L, and the second end of the capacitor C is grounded. Through the arrangement, the surge reaching the auxiliary equipment can be eliminated, and the influence of the surge on the auxiliary equipment and the influence on a test result are avoided. It should be noted that the sizes of the inductor L and the capacitor C may be set according to actual needs, for example, the inductor L is set to 20nH, and the capacitor C is set to 0.5uF, 9uF, and 18 uF.
The impedance device of the embodiment further comprises a cuboid electrical box, and the first communication port c and the second communication port d are arranged on two opposite surfaces of the electrical box; referring to fig. 3 of the first embodiment, the first communication port c may be disposed on a front surface of the rectangular electrical box, and the second communication port d is disposed on a back surface of the rectangular electrical box, so that connection ports of different devices are disposed on different surfaces of the electrical box, thereby facilitating connection of users.
In practical applications, the number of the first communication ports c may be the same as the number of the test ports m, and the test ports m and the first communication ports c may be integrated into one port as long as the connection relationship between the test ports m, the first communication ports c and other components is not changed.
The embodiment can ensure that the interface for connecting the auxiliary equipment is also arranged on the electrical box under the condition that the test of the tested equipment can be carried out only by connecting the auxiliary equipment, so that the connection between the auxiliary equipment and the tested equipment is more orderly.
It should be noted that the above-mentioned resistor, inductor, and capacitor are all disposed on a Circuit board, which is an FPC (Flexible Printed Circuit).
The above steps of various components are divided for clarity of description, and the implementation may be combined into one component, split into multiple components, and include the same logical relationship, which are all within the protection scope of the present patent.
A second embodiment of the present invention relates to a surge test system including a surge simulation generator, a device under test, and the impedance device in the above embodiments.
As shown in fig. 8, a schematic structural diagram of the surge testing system of this embodiment includes: an impedance device 201, a surge simulation generator 202 and a device under test 203; surge simulation generator 202 is connected to surge input port HV, and device under test 203 is connected to test port m.
The embodiment can perform surge test in various environments through one surge test system by using the impedance device of the embodiment, and has the advantages of simple operation and cost saving.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific embodiments for practicing the utility model, and that various changes in form and details may be made therein without departing from the spirit and scope of the utility model in practice.
Claims (10)
1. An impedance device, comprising: the device comprises a surge input port, a test port, a plurality of first resistors with different resistance values and a first selection port;
first ends of the first resistors are connected to the test port; the first selection port is selectively connected with the second end of one of the first resistors; the first selection port is connected with the surge input port.
2. The impedance device of claim 1, further comprising: a plurality of second resistors, a second select port;
first ends of the plurality of second resistors are connected to the first selection port; the second selection port is selectively connected with the second end of one of the second resistors; the second selection port is connected with the surge input port.
3. The impedance device of claim 1, further comprising: an electrical box;
the first resistor is arranged inside the electric appliance box; the surge input port, the test port, the second end of the first resistor and the first selection port are all arranged on the outer surface of the electrical box.
4. The impedance device of claim 3, further comprising a first communication port, a second communication port;
the first communication port and the second communication port are both arranged on the outer surface of the electrical box;
the first communication port is connected with the tested equipment, and the first communication port is also connected with the second communication port; the second communication port is also connected with auxiliary equipment.
5. Impedance device according to claim 4, characterized in that it further comprises a filtering module;
the filtering module is arranged between the first communication port and the second communication port.
6. Impedance device according to claim 4, characterized in that said electrical box is a cuboid; the first communication port and the second communication port are arranged on two opposite surfaces of the electric appliance box; the second end of the first resistor and the first selection port are arranged on the same surface of the electric appliance box.
7. The impedance device of claim 1, wherein the first select port is connected to the second terminal of the first resistor through a single pole, multiple throw switch.
8. The impedance device of claim 1, wherein the first resistance is a metal-die resistance.
9. Impedance device according to claim 1 or 2, characterized in that the number of test ports is plural.
10. A surge test system comprising a surge simulation generator, a device under test, an impedance device according to any one of claims 1 to 9;
the surge simulation generator is connected with the surge input port, and the tested device is connected with the test port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120756370.3U CN215833509U (en) | 2021-04-13 | 2021-04-13 | Impedance device and surge test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120756370.3U CN215833509U (en) | 2021-04-13 | 2021-04-13 | Impedance device and surge test system |
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| Publication Number | Publication Date |
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| CN215833509U true CN215833509U (en) | 2022-02-15 |
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| CN202120756370.3U Active CN215833509U (en) | 2021-04-13 | 2021-04-13 | Impedance device and surge test system |
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| CN (1) | CN215833509U (en) |
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- 2021-04-13 CN CN202120756370.3U patent/CN215833509U/en active Active
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Address after: Building 3, No. 145 Jintang Road, Pudong New Area, Shanghai, January 2012 Patentee after: Shanghai Europa Certification Services Co.,Ltd. Country or region after: China Address before: 201203 3 floors, No. 400, No. 400, Fang Chun Road, Shanghai Patentee before: TA TECHNOLOGY (SHANGHAI) CO.,LTD. Country or region before: China |