CN218633980U - Power failure monitoring protection circuit, network security transmission card and security equipment - Google Patents
Power failure monitoring protection circuit, network security transmission card and security equipment Download PDFInfo
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- CN218633980U CN218633980U CN202222758425.1U CN202222758425U CN218633980U CN 218633980 U CN218633980 U CN 218633980U CN 202222758425 U CN202222758425 U CN 202222758425U CN 218633980 U CN218633980 U CN 218633980U
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Abstract
The utility model discloses a power failure monitoring protection circuit, network security transmission card and safety device, power failure monitoring protection circuit includes: the power supply is connected with the network chip and used for supplying power to the network chip; a first network card interface and a second network card interface; the voltage detection circuit is used for detecting the voltage of the power supply and outputting a corresponding voltage sampling signal; the switch circuit is arranged between the first network card interface and the second network card interface in series; and the control end of the main control circuit is connected with the controlled end of the switch circuit, and the main control circuit is used for controlling the switch circuit to be switched on when the voltage detection circuit detects that the power supply is powered off so as to control the first network card interface and the second network card interface to be communicated. The utility model discloses can in time detect the condition of network card outage suddenly and switch over turn-off protection, reduce data transmission's in the network card loss.
Description
Technical Field
The utility model relates to a power failure monitoring protection circuit field, in particular to power failure monitoring protection circuit, network security transmission card and safety device.
Background
In the field of network security, aiming at various network attacks, viruses, power failure, crash and other abnormal occurrences, the network security transmission card with the bypass function can greatly reduce the loss caused by disasters, and is particularly suitable for network security equipment platforms such as firewalls, antivirus gateways, gatekeepers, data monitoring and the like.
In the existing safety monitoring of the network safety transmission card, sudden power failure is not easy to find in time and realize bypass switching in time, so that the caused influence not only in the equipment but also can influence the connection of other networks, and the loss of data transmission is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a power down monitoring protection circuit, network security transmission card and safety device can in time detect the condition of network card outage suddenly and switch over turn-off protection, has reduced data transmission's in the network card loss.
In order to achieve the above object, the utility model provides a power down monitoring protection circuit, include:
the power supply is connected with the network chip and used for supplying power to the network chip;
the first network card interface and the second network card interface are used for receiving external signals;
the detection end of the voltage detection circuit is connected with the power supply, and the voltage detection circuit is used for detecting the voltage of the power supply and outputting a corresponding voltage sampling signal;
the switching circuit is arranged between the first network card interface and the second network card interface in series and is used for controlling the electric connection/disconnection between the first network card interface and the second network card interface;
the input end of the main control circuit is connected with the voltage detection circuit, the control end of the main control circuit is connected with the controlled end of the switch circuit, and the main control circuit is used for controlling the switch circuit to be switched on when the voltage detection circuit detects that the power supply is powered down so as to control the first network card interface and the second network card interface to be communicated.
Optionally, the power failure monitoring protection circuit further includes a voltage dividing circuit, and the voltage dividing circuit is serially connected between the power supply and the voltage detection circuit;
the voltage division circuit is used for dividing the voltage signal of the power supply and outputting a corresponding divided voltage signal to the voltage detection circuit, and the main control circuit is used for controlling the switch circuit to be switched on when the voltage signal detected by the voltage detection circuit is lower than a preset voltage.
Optionally, the voltage divider circuit includes a first resistor, a second resistor, and a third resistor, a first end of the first resistor is connected to the power supply, a second end of the first resistor and a first end of the second resistor are interconnected to a first end of the third resistor, a second end of the second resistor is grounded, and a second end of the third resistor is connected to the input terminal of the voltage detection circuit.
Optionally, the voltage divider circuit further includes a first capacitor, a first end of the first capacitor is connected to the second end of the third resistor, and a second end of the first capacitor is grounded.
Optionally, the switch circuit includes a relay driving circuit and a relay, an input end of the relay driving circuit is connected with a control end of the main control circuit, an output end of the relay driving circuit is connected with a controlled end of the relay, and the relay is arranged in series between the first network card interface and the second network card interface;
the main control circuit is specifically used for outputting a driving control signal to the relay driving circuit when the voltage detection circuit detects that the power supply is powered down, and the relay driving circuit is used for outputting a driving signal to the relay to drive the relay to be switched on when receiving the driving control signal.
Optionally, the voltage detection circuit and the main control circuit are integrated on the same main control chip.
Optionally, the power supply is a power supply of a standard PCIe slot.
The utility model provides a network security transmission card, network security transmission card includes as above the power down monitoring protection circuit.
The utility model provides a network security equipment, network security equipment includes as above network security transmission card.
The utility model discloses a set up a power failure monitoring protection circuit, this power failure monitoring protection circuit includes power supply and network chip, and power supply is used for supplying power to network chip, and the switch circuit series connection sets up between first network card interface and second network card interface, and voltage detection circuit is used for detecting power supply's voltage. When the voltage detection circuit detects that the power supply is powered down, the main control circuit controls the switch circuit to be switched on, so that the first network card interface and the second network card interface are directly communicated, data transmitted between the first network card interface and the second network card interface do not need to pass through a network chip, data interaction between the network chip and the outside world when the power supply is powered down is avoided, the influence is only in the network chip of the equipment, the connection of other networks cannot be influenced, and the data loss is reduced to the minimum. The utility model discloses data transmission's loss in the network card has been reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a functional module of an embodiment of the power down monitoring protection circuit of the present invention;
fig. 2 is a schematic circuit diagram of an embodiment of a power supply and a voltage dividing circuit in an embodiment of the power down monitoring protection circuit of the present invention;
fig. 3 is a schematic diagram of a circuit structure of an embodiment of the relay driving circuit and an embodiment of the main control circuit in an embodiment of the power down monitoring protection circuit of the present invention;
fig. 4 is a schematic circuit diagram of an embodiment of the relay, the first network card interface, and the second network card interface of an embodiment of the power down monitoring protection circuit of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name(s) |
| 10 | |
20 | |
| 30 | |
40 | |
| 50 | |
51 | |
| 52 | Relay with a |
60 | First |
| 70 | Second network card interface |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, back, 8230; \8230;) are provided in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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 at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
In the field of network security, aiming at various network attacks, viruses, power failure, crash and other abnormal occurrences, the network security transmission card with the BYPASS function can greatly reduce the loss caused by disasters, and is particularly suitable for network security equipment platforms such as firewalls, antivirus gateways, gatekeepers, data monitoring and the like.
In the existing security monitoring of the network security transmission card, sudden power failure is not easy to find in time and bypass (two networks do not pass through a system of network security equipment through a specific trigger state) switching is realized in time, so that the caused influence not only in the equipment can influence the connection of other networks, and the loss of data transmission is increased.
The utility model provides a power down monitoring protection circuit can in time detect the condition of network card outage suddenly and realize bypass switching function, reduces data transmission's in the network card loss.
The utility model discloses an in the embodiment, this power down monitoring protection circuit includes:
the network chip comprises a power supply 20 and a network chip 10, wherein the power supply 20 is connected with the network chip 10, and the power supply 20 is used for supplying power to the network chip 10;
a first network card interface 60 and a second network card interface 70, where the first network card interface 60 and the second network card interface 70 are used to receive external signals;
a voltage detection circuit 30, a detection end of the voltage detection circuit 30 is connected to the power supply 20, and the voltage detection circuit 30 is configured to detect a voltage of the power supply 20 and output a corresponding voltage sampling signal;
the switch circuit 50 is arranged in series between the first network card interface 60 and the second network card interface 70, and the switch circuit 50 is used for controlling the electrical connection/disconnection between the first network card interface 60 and the second network card interface 70;
the input end of the main control circuit 40 is connected to the voltage detection circuit 30, the control end of the main control circuit 40 is connected to the controlled end of the switch circuit 50, and the main control circuit 40 is configured to control the switch circuit 50 to be turned on when the voltage detection circuit 30 detects that the power supply 20 is powered down, so as to control the first network card interface 60 and the second network card interface 70 to be communicated with each other.
In this embodiment, the first network card interface 60 and the second network card interface 70 are two network card interfaces of the network chip 10, and the network chip 10 accesses other network signal devices through the network card interfaces and performs data transmission with the other network signal devices.
The main control circuit 40 determines whether the network chip 10 is in a power-down state according to the voltage sampling signal output by the voltage detection circuit 30. The power supply 20 is the power supply 20 of the network chip 10, and the voltage detection circuit 30 is configured to detect a voltage of the power supply 20 and output a corresponding voltage sampling signal to the main control circuit 40. A corresponding voltage threshold is set in the main control circuit 40, and when the voltage detected by the voltage detection circuit 30 is smaller than the voltage threshold, it indicates that the voltage of the power supply 20 is smaller at this time, and the network chip 10 is in a power-down state; when the voltage detected by the voltage detection circuit 30 is greater than or equal to the voltage threshold, it indicates that the voltage of the power supply 20 is greater at this time, and the network chip 10 is not in the power-down state.
The switch circuit 50 is configured to control electrical connection/disconnection between the first network card interface 60 and the second network card interface 70, when the switch circuit 50 is turned on, the first network card interface 60 and the second network card interface 70 are connected, and data transmission is directly performed between the first network card interface 60 and the second network card interface 70, and the transmitted data does not need to pass through the network chip 10. When the switching circuit 50 is turned off, the first network card interface 60 and the second network card interface 70 need to transmit data through the network chip 10.
The main control circuit 40 controls on/off of the switch circuit 50 according to the voltage detected by the voltage detection circuit 30. When the voltage detected by the voltage detection circuit 30 is smaller than the voltage threshold, it indicates that the voltage of the power supply 20 is smaller, and the network chip 10 is in a power-down state. When the voltage detection circuit 30 detects that the power supply 20 is powered off, the switch circuit 50 is controlled to be turned on, so that the first network card interface 60 and the second network card interface 70 are communicated, data transmission is directly performed between the first network card interface 60 and the second network card interface 70, and the transmitted data does not need to pass through the network chip 10. Due to the power failure of the power supply 20 of the network chip 10, a system of the network chip 10 fails, data accessed by the first network card interface 60 and the second network card interface 70 no longer performs data interaction with the network chip 10, so that the network chip 10 with the power failure is prevented from transmitting wrong data to other equipment, and the loss of data transmission is reduced.
When the voltage detected by the voltage detection circuit 30 is greater than or equal to the voltage threshold, it indicates that the voltage of the power supply 20 is greater at this time, and the network chip 10 resumes normal power-on. After the network chip 10 is powered up normally, the main control circuit 40 controls the switch circuit 50 to be turned off, data transmission needs to be realized between the first network card interface 60 and the second network card interface 70 through the network chip 10, and the network chip 10 works normally and performs data interaction with other network devices through the first network card interface 60 and the second network card interface 70.
The utility model discloses a set up a power failure monitoring protection circuit, this power failure monitoring protection circuit includes power supply 20 and network chip 10, and power supply 20 is used for supplying power to network chip 10, and switching circuit 50 establishes ties and sets up between first network card interface 60 and second network card interface 70, and voltage detection circuit 30 is used for detecting power supply 20's voltage. When the voltage detection circuit 30 detects that the power supply 20 is powered down, the main control circuit 40 controls the switch circuit 50 to be switched on, so that the first network card interface 60 and the second network card interface 70 are directly communicated, and data transmitted between the first network card interface 60 and the second network card interface 70 does not need to pass through the network chip 10, thereby avoiding data interaction between the network chip 10 and the outside when the power is down, so that the influence is only in the network chip 10 of the device, the connection of other networks cannot be influenced, and the data loss is reduced to the minimum. The utility model discloses data transmission's loss in the network card has been reduced.
In an embodiment of the present invention, the power down monitoring and protecting circuit further includes a voltage dividing circuit, and the voltage dividing circuit is serially connected between the power supply 20 and the voltage detecting circuit 30;
the voltage dividing circuit is configured to divide a voltage signal of the power supply 20 and output a corresponding divided voltage signal to the voltage detection circuit 30, and the main control circuit 40 is configured to control the switch circuit 50 to be turned on when the voltage signal detected by the voltage detection circuit 30 is lower than a preset voltage.
In this embodiment, a voltage dividing circuit is provided to divide the voltage of the power supply 20, and the divided voltage signal is used to supply power to the network chip 10.
The voltage detection circuit 30 determines whether the network chip 10 is powered down by detecting the power supply voltage of the network chip 10, if the network chip 10 adopts a power supply voltage of 3.3V, when the voltage of the divided voltage signal detected by the voltage detection circuit 30 is lower than 3.3V, the network chip 10 is in a power-down state, the switch circuit 50 is controlled to be turned on, so that the first network card interface 60 and the second network card interface 70 are communicated, data transmission is directly performed between the first network card interface 60 and the second network card interface 70, and the transmitted data does not need to pass through the network chip 10.
In an embodiment of the present invention, the voltage dividing circuit includes a first resistor, a second resistor and a third resistor, the first end of the first resistor is connected to the power supply 20, the second end of the first resistor reaches the first end of the second resistor and is connected to the first end of the third resistor, the second end of the second resistor is grounded, and the second end of the third resistor is connected to the input terminal of the voltage detecting circuit 30.
In this embodiment, the first resistor and the second resistor are two voltage dividing resistors, and the third resistor is a current limiting resistor. The voltage of the power supply 20 is divided by the first resistor and the second resistor and then output to the power supply terminal of the network chip 10. The power supply voltage of the network chip 10 is generally 3.3V or 5V, and the voltage of the power supply 20 is generally 12V.
In an embodiment of the present invention, the voltage dividing circuit further includes a first capacitor, a first end of the first capacitor is connected to the second end of the third resistor, and a second end of the first capacitor is grounded.
In this embodiment, the first capacitor is used as an energy storage device, the power supply 20 charges the first capacitor when powering on, and a first end of the first capacitor is connected to the power supply end of the network chip 10 and is used for providing a power supply voltage to the network chip 10.
In an embodiment of the present invention, the switch circuit 50 includes a relay driving circuit 51 and a relay 52, an input end of the relay driving circuit 51 is connected to a control end of the main control circuit 40, an output end of the relay driving circuit 51 is connected to a controlled end of the relay 52, and the relay 52 is serially connected between the first network card interface 60 and the second network card interface 70;
the main control circuit 40 is specifically configured to output a driving control signal to the relay driving circuit 51 when the voltage detection circuit 30 detects that the power supply 20 is powered down, and the relay driving circuit 51 is configured to output a driving signal to the relay 52 to drive the relay 52 to be turned on when receiving the driving control signal.
In the present embodiment, a loop is formed between the first network interface and the second network interface through the relay 52. When the voltage detection circuit 30 detects that the power supply 20 is powered off, the main control circuit 40 drives the control signal to the relay driving circuit 51, and the relay 52 outputs a corresponding driving voltage to the relay 52, so that the relay 52 is turned on, and the first network card interface 60 and the second network card interface 70 are communicated with each other.
The first network card interface 60 and the second network card interface 70 have a plurality of connection terminals, and a plurality of relays 52 are provided between the first network interface and the second network interface. The first network card interface 60 and the second network card interface 70 may be RJ45 type network card interfaces, and the relay 52 may be UA2-4.5SNU type relay 52.
In an embodiment of the present invention, the voltage detection circuit 30 and the main control circuit 40 are integrally disposed on the same main control chip.
In this embodiment, the main control chip has a voltage detection pin, and whether the power supply 20 is powered down can be detected through the voltage detection pin, and when it is detected that the power supply 20 is powered down, the switch circuit 50 is controlled to be turned on, so that the first network card interface 60 and the second network card interface 70 are communicated, and the bypass function of the main control chip is implemented. The main control chip can adopt a single chip microcomputer with a PIC16F636 model.
In an embodiment of the present invention, the power supply 20 is a power supply 20 of a standard PCIe slot.
In the present embodiment, PCIe (Peripheral Component Interconnect Express) is a third generation I/O bus following the ISA and PCI buses, and is generally translated into a Peripheral device high-speed connection standard. The network chip 10 using standard PCIe has strong expansibility, and can support a variety of network devices such as a video card, a solid state disk, a wireless network card, a wired network card, a sound card, a video capture card, and the like.
Referring to fig. 1 and 2, the utility model provides a network security transmission card, network security transmission card includes as above the power down monitoring protection circuit.
The detailed structure of the power failure monitoring protection circuit can refer to the above embodiments, and is not described herein again; it can be understood that, because the utility model discloses the above-mentioned power down monitoring protection circuit has been used in the network security transmission card, consequently, the utility model discloses the embodiment of network security transmission card includes the above-mentioned whole technical scheme of the whole embodiments of power down monitoring protection circuit, and the technological effect that reaches is also identical, no longer gives unnecessary details here.
Referring to fig. 1 and 2, the present invention provides a network security device, which includes the network security transport card as described above.
The detailed structure of the power failure monitoring protection circuit can refer to the above embodiments, and is not described herein; it can be understood that, because the utility model discloses above-mentioned network security transmission card has been used among the network security equipment, consequently, the utility model discloses network security equipment's embodiment includes all technical scheme of the whole embodiments of above-mentioned network security transmission card, and the technical effect who reaches is also identical, no longer gives unnecessary details here.
The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.
Claims (9)
1. The utility model provides a power failure monitoring protection circuit which characterized in that, power failure monitoring protection circuit includes:
the power supply is connected with the network chip and used for supplying power to the network chip;
the device comprises a first network card interface and a second network card interface, wherein the first network card interface and the second network card interface are used for receiving external signals;
the detection end of the voltage detection circuit is connected with the power supply, and the voltage detection circuit is used for detecting the voltage of the power supply and outputting a corresponding voltage sampling signal;
the switching circuit is arranged between the first network card interface and the second network card interface in series and is used for controlling the electric connection/disconnection between the first network card interface and the second network card interface;
the input end of the main control circuit is connected with the voltage detection circuit, the control end of the main control circuit is connected with the controlled end of the switch circuit, and the main control circuit is used for controlling the switch circuit to be switched on when the voltage detection circuit detects that the power supply is powered down so as to control the first network card interface and the second network card interface to be communicated.
2. The power-down monitoring protection circuit of claim 1, further comprising a voltage divider circuit disposed in series between the power supply and the voltage detection circuit;
the voltage division circuit is used for dividing the voltage signal of the power supply and outputting a corresponding divided voltage signal to the voltage detection circuit, and the main control circuit is used for controlling the switch circuit to be switched on when the voltage signal detected by the voltage detection circuit is lower than a preset voltage.
3. The power failure monitoring protection circuit of claim 2, wherein the voltage divider circuit comprises a first resistor, a second resistor and a third resistor, a first end of the first resistor is connected to the power supply, a second end of the first resistor and a first end of the second resistor are interconnected with a first end of the third resistor, a second end of the second resistor is grounded, and a second end of the third resistor is connected to the input terminal of the voltage detection circuit.
4. The power down monitoring protection circuit of claim 3, wherein the voltage divider circuit further comprises a first capacitor, a first terminal of the first capacitor is connected to a second terminal of the third resistor, and a second terminal of the first capacitor is grounded.
5. The power failure monitoring protection circuit according to claim 1, wherein the switch circuit comprises a relay driving circuit and a relay, an input end of the relay driving circuit is connected with a control end of the main control circuit, an output end of the relay driving circuit is connected with a controlled end of the relay, and the relay is arranged between the first network card interface and the second network card interface in series;
the main control circuit is specifically used for outputting a driving control signal to the relay driving circuit when the voltage detection circuit detects that the power supply is powered down, and the relay driving circuit is used for outputting a driving signal to the relay to drive the relay to be switched on when receiving the driving control signal.
6. The power failure monitoring protection circuit of claim 1, wherein the voltage detection circuit and the master control circuit are integrally disposed on a same master control chip.
7. The power down monitoring protection circuit of claim 1, wherein the power supply is a power supply of a standard PCIe slot.
8. A network security transport card, characterized in that it comprises a power down monitoring protection circuit according to any of claims 1 to 7.
9. A network security device, characterized in that it comprises a network security transport card according to claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222758425.1U CN218633980U (en) | 2022-10-19 | 2022-10-19 | Power failure monitoring protection circuit, network security transmission card and security equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222758425.1U CN218633980U (en) | 2022-10-19 | 2022-10-19 | Power failure monitoring protection circuit, network security transmission card and security equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218633980U true CN218633980U (en) | 2023-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222758425.1U Active CN218633980U (en) | 2022-10-19 | 2022-10-19 | Power failure monitoring protection circuit, network security transmission card and security equipment |
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| Country | Link |
|---|---|
| CN (1) | CN218633980U (en) |
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2022
- 2022-10-19 CN CN202222758425.1U patent/CN218633980U/en active Active
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