CN217305340U - Performance test system for red and black power isolation protection device - Google Patents
Performance test system for red and black power isolation protection device Download PDFInfo
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- CN217305340U CN217305340U CN202123331968.7U CN202123331968U CN217305340U CN 217305340 U CN217305340 U CN 217305340U CN 202123331968 U CN202123331968 U CN 202123331968U CN 217305340 U CN217305340 U CN 217305340U
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Abstract
The utility model discloses a protection device capability test system is kept apart to red black power, including shielding rack, LISN and receiver, include load and signal source module in the shielding rack, load and signal source module, the isolation protection device that awaits measuring, LISN and receiver link to each other in proper order. The level of the protective device and the level of the protective device are respectively tested by the LISN, the receiver and the video information capturing receiver, the device is suitable for the passive red and black power isolation protective device and the active red and black power isolation protective device, and can be used for testing the isolation effect of computer image signals, and the effect of the protective device is simply and quickly tested.
Description
Technical Field
The utility model belongs to the information leakage field is prevented in the power isolation, concretely relates to protection capability test system is kept apart to red black power.
Background
At present, with the rapid development of modern technology, communication modes are diversified, electronic equipment is widely applied, and the working frequency of electronic equipment such as computers, printers, fax machines and the like is higher and higher, so that information signals on the equipment can be conducted to a public power grid outside an office area through the power grid, and information on the equipment is leaked. Lawbreakers can acquire original information on equipment by intercepting and capturing public power grid leakage information and reducing the public power grid leakage information to cause information leakage on the equipment. This red black power isolation protector can effectual stop information signal conduction to public power grid, avoids the information on the electronic product to reveal to the security of the information on the effectual improve equipment.
But can not know whether the red and black power isolation protection device can effectively block the information signal from being conducted to the public power grid.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can detect red black isolation protector and whether have the red black power isolation protector capability test system who blocks the information disclosure ability.
The utility model aims at realizing through following technical means, a protection device capability test system is kept apart to red black power, including shielding rack, LISN and receiver, include load and signal source module in the shielding rack, load and signal source module, the isolation protection device that awaits measuring, LISN and receiver link to each other in proper order.
An internal power strip is further arranged in the shielding cabinet, the other end of the internal power strip is connected with a shielding plug, the shielding plug is connected with the isolation protection device to be tested, and the load is connected with the internal power strip.
The signal source module comprises a filter, a signal source and current injection calipers which are connected in sequence, the current injection calipers are connected with a load, and the filter is also used for being connected with an external power supply.
The LISN and receiver are connected by a coaxial cable.
The LISN is also connected with a video information capturing receiver.
The video information interception receiver is also connected with a receiving caliper, and the receiving caliper is connected with the isolation protection device to be tested.
The shielding cabinet is also provided with a radio frequency coaxial connector, and the radio frequency coaxial connector is connected with the current injection caliper.
Still be provided with computer and display in the shielding rack, computer and display all link to each other with inside row of inserting.
The beneficial effects of the utility model reside in that: the level of the protective device and the level of the protective device are respectively tested by the LISN, the receiver and the video information capturing receiver, the device is suitable for the passive red and black power isolation protective device and the active red and black power isolation protective device, and can be used for testing the isolation effect of computer image signals, and the effect of the protective device is simply and quickly tested.
Drawings
FIG. 1 is a schematic diagram of a passive red-black power isolation protection device test;
FIG. 2 is a schematic diagram of an active module test of the active red and black power isolation protection device;
FIG. 3 is a schematic diagram of a passive module test of the active red and black power isolation protection device;
FIG. 4 is a schematic view of an interception test of computer information leakage through a passive/active red-black power isolation protector (through a receiving caliper);
FIG. 5 is a schematic view of an interception test of computer information leakage through a passive/active red-black power isolation protector (through LISN);
FIG. 6 is a schematic diagram of an external signal input test;
fig. 1, receiver; 2. LISN; 3. shielding the cabinet; 4. a load; 5. current injection calipers; 6. a signal source; 7. a filter; 8. an internal power strip; 9. a shield plug; 10. video information interception receiver; 11. a computer; 12. a display; 13. a radio frequency coaxial connector; 14. a caliper is received.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Detailed Description
[ example 1 ]
A performance test system for a red and black power isolation protection device comprises a shielding cabinet 3, a LISN2 and a receiver 1, wherein the shielding cabinet 3 comprises a load 4 and a signal source module, and the load 4, the signal source module, the isolation protection device to be tested, the LISN2 and the receiver 1 are sequentially connected.
Still be equipped with inside row 8 of inserting in shielding rack 3, inside 8 other ends of inserting are connected shielding plug 9, and shielding plug 9 links to each other with the isolation protection device that awaits measuring, and load 4 links to each other with inside row 8 of inserting.
The signal source module comprises a filter 7, a signal source 6 and a current injection caliper 5 which are connected in sequence, the current injection caliper 5 is connected with the load 4, and the filter 7 is also used for being connected with an external power supply.
The LISN2 and the receiver 1 are connected by a coaxial cable.
The LISN2 is also connected to a video information capture receiver 10.
The video information capturing receiver 10 is also connected with a receiving caliper 14, and the receiving caliper 14 is connected with the isolation protection device to be tested.
The shielding cabinet 3 is also provided with a radio frequency coaxial connector 13, and the radio frequency coaxial connector 13 is connected with the current injection caliper 5. The radio frequency coaxial connector 13 is N-KFK.
A computer 11 and a display 12 are further arranged in the shielding cabinet 3, and both the computer 11 and the display 12 are connected with the internal power strip 8.
As shown in fig. 1, the shielding cage 3 is installed with a filter 7, a signal source 6, a current injection caliper 5, a load 4, and an internal socket 8.
One side of the internal power strip 8 is connected with two ends of the load 4, the other side of the internal power strip is connected with an isolation protection device to be tested through a shielding plug 9, the other end of the isolation protection device to be tested is connected to the LISN2, and the LISN2 is connected to the receiver 1; an externally accessed power supply is filtered by a filter 7, a driving signal source 6 sends out a signal, the signal is injected into a connecting line between a load 4 and an internal power strip 8 through a current injection caliper 5, the signal is injected into a loop formed by the load 4, an isolation protection device to be tested and a LISN2 through a shielding plug 9, and the LISN2 is externally connected with a mains supply to serve as a power supply of the loop. The receiver 1 measures the through signal level via LISN 2. The receiver 1 is connected through the LISN2 by using a coaxial cable, because the high frequency signal is 50 Ω impedance, and the coaxial cable is also 50 ohm impedance, the signal will not be attenuated, and the other lines will attenuate the signal. LISN, i.e. line impedance stabilization network. LISN is an important accessory in electromagnetic compatibility testing in electrical power systems. It can isolate the electric wave interference, provide stable test impedance, and play the role of filtering.
When computer information is tested, the load 4 and the internal socket 8 are detached, the LISN2 is connected with the video information interception receiver 10, or a receiving caliper 14 of the video information interception receiver 10 is directly connected to the output end of the isolation protection device to be tested, and the video information interception receiver 10 measures signals on a power line through the LISN2 or the receiving caliper 14.
When the signal source 6 is outside the shielding cabinet 3, the signal source 6 is connected to the rf coaxial connector 13 on the shielding cabinet 3, and the rf coaxial connector 13 is connected to the current injection caliper 5.
(1) As shown in fig. 1, when the isolation and protection device under test is a passive red and black power isolation and protection device,
firstly, an isolation protection device to be tested is removed, a shielding plug 9 is directly connected into the LISN2, and the LISN2 and the filter 7 are both connected with the mains supply.
A signal source 6 outputs a 0dBm signal in a stepping mode of 30kHz and keeps the 0dBm signal for 30ms in a frequency band of 150 k-100 MHz, the signal is injected into a loop formed by a load 4 and a LISN2 through a caliper 5, and a receiver 1 measures the level P of a through signal without a passive red-black power isolation protection device to be measured through a LISN2 1 ；
Then the device is connected with an isolation protector to be tested, both the LISN2 and the filter 7 are connected with a commercial power, the shielding plug 9 is connected with the isolation protector of the passive red and black power to be tested, the isolation protector of the passive red and black power to be tested is connected with the LISN2, the signal source 6 outputs a 0dBm signal by stepping 30kHz and keeps 30ms in the frequency band of 150 k-100 MHz, the signal is input into a loop consisting of a load 4, the isolation protector of the passive red and black power to be tested and the LISN2, and the receiver 1 measures the level P passing through the isolation protector of the passive red and black power through the LISN2 2
The insertion loss of the passive red and black power isolation protection device is IL ═ P 1 -P 2 (dB), the larger the insertion loss, the less the signal will be attenuated and thus more difficult to extract from the noise and intercept, indicating the better protection.
(2) As shown in fig. 2 and 3, when the isolation protection device to be tested is an active red and black power isolation protection device
Active module test, as shown in fig. 2, since the active module of the active red and black power isolation protection device only needs to test the noise level generated by the active module, it is not necessary to inject a signal source, and the filter 7 is not connected to the commercial power.
The LISN2 is connected with the mains supply, after the active red and black power isolation protection device is powered on, the active module can automatically generate white noise, and the receiver 1 measures the generated noise level through the LISN 2. The signal level is not more than 50dBuV (30-400MHz) on the power grid, and the noise level is more than 50dBuV, so that the noise can be submerged. Thus, if the noise level is > 50dBuV, the protection is effective.
As shown in fig. 3, the passive module test cannot be performed because the noise generation module of the active device generates white noise by default in the power-on state. Therefore, passive module testing of active devices requires disconnecting the power supply line of LISN2 as in fig. 3, i.e. testing in the unpowered state. And (3) testing the passive module of the active device according to the step of testing the passive red and black power isolation protection device in the step (1).
(3) When the isolation protection device to be tested is a passive/active red-black power isolation protection device and computer information is tested, an interception test system for information leakage is as follows:
as shown in fig. 4, computer 11 and display 12 are connected to internal socket 8, load 4 is disconnected from internal socket 8, and LISN2 is connected to the mains.
As shown in fig. 4, the connection test system may select to connect the receiving caliper 14 to a power line connecting the isolation protection device to be tested and the LISN2, and the receiving caliper 14 transmits the received signal to the video information capturing receiver 10; in the case of removal of the isolation protection device to be tested, the receiving caliper 14, if used, is connected to the power supply line between the shielding plug 9 and the LISN 2.
Alternatively, as shown in fig. 5, the video information capturing receiver 10 is connected to the LISN2, and the LISN2 transmits signals to the video information capturing receiver 10.
The computer sends specific display characters or images to the display;
firstly, removing an isolation protection device to be detected, and observing whether a video information interception receiver 10 can reproduce a transmitted specific image or not; at this time, since no isolation protection device performs isolation protection, a video signal is present on the power line and can be intercepted, and a corresponding image appears in the video information intercepting receiver 10.
Then the passive/active red-black power isolation protection device to be tested is connected into the test system, the computer sends specific display characters or images to the display again, and whether the video information interception receiver 10 can reproduce the sent specific images or not is observed; if the specific image is not reproduced after the isolation protection device to be tested is arranged, the protection is effective.
(4) As shown in fig. 6, when the external signal input is used, the external signal input is connected to the rf coaxial connector 13 on the shielding cabinet 3, and the rf coaxial connector 13 is further connected to the current injecting caliper 5 inside the shielding cabinet 3. If the passive red and black power supply isolation protection device is tested, the steps are the same as those in the step (1); and (3) if the active red and black power isolation protection device is tested, the steps are the same as those in the step (2).
Claims (8)
1. The utility model provides a red black power isolation protector capability test system which characterized in that: the device comprises a shielding cabinet (3), an LISN (2) and a receiver (1), wherein the shielding cabinet (3) comprises a load (4) and a signal source module, and the load (4) is sequentially connected with the signal source module, an isolation protection device to be tested, the LISN (2) and the receiver (1).
2. The system for testing the performance of the red and black power isolation protection device according to claim 1, wherein: the shielding cabinet (3) in still be equipped with inside row (8) of inserting, inside row (8) other end connection shielding plug (9) of inserting, shielding plug (9) link to each other with the isolation protection device that awaits measuring, load (4) link to each other with inside row (8) of inserting.
3. The system for testing the performance of the red and black power isolation protection device according to claim 1, wherein: the signal source module comprises a filter (7), a signal source (6) and current injection calipers (5) which are connected in sequence, the current injection calipers (5) are connected with a load (4), and the filter (7) is also used for being connected with an external power supply.
4. The system for testing the performance of the red and black power isolation protection device according to claim 1, wherein: the LISN (2) is connected with the receiver (1) through a coaxial cable.
5. The system for testing the performance of the red and black power isolation protection device according to claim 1, wherein: the LISN (2) is also connected with a video information capturing receiver (10).
6. The system for testing the performance of the red and black power isolation protection device according to claim 5, wherein: the video information capturing receiver (10) is further connected with a receiving caliper (14), and the receiving caliper (14) is connected with the isolation protection device to be tested.
7. The system for testing the performance of the red and black power isolation protection device according to claim 1, wherein: the shielding cabinet (3) is also provided with a radio frequency coaxial connector (13), and the radio frequency coaxial connector (13) is connected with the current injection caliper (5).
8. The system for testing the performance of the red and black power isolation protection device according to claim 2, wherein: the shielding cabinet (3) is also internally provided with a computer (11) and a display (12), and the computer (11) and the display (12) are connected with the internal power strip (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123331968.7U CN217305340U (en) | 2021-12-28 | 2021-12-28 | Performance test system for red and black power isolation protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123331968.7U CN217305340U (en) | 2021-12-28 | 2021-12-28 | Performance test system for red and black power isolation protection device |
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| Publication Number | Publication Date |
|---|---|
| CN217305340U true CN217305340U (en) | 2022-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123331968.7U Active CN217305340U (en) | 2021-12-28 | 2021-12-28 | Performance test system for red and black power isolation protection device |
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| Country | Link |
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| CN (1) | CN217305340U (en) |
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- 2021-12-28 CN CN202123331968.7U patent/CN217305340U/en active Active
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