CN213305490U - Cross-network isolation alarm device - Google Patents
Cross-network isolation alarm device Download PDFInfo
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- CN213305490U CN213305490U CN202021499870.5U CN202021499870U CN213305490U CN 213305490 U CN213305490 U CN 213305490U CN 202021499870 U CN202021499870 U CN 202021499870U CN 213305490 U CN213305490 U CN 213305490U
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Abstract
The utility model discloses a cross-network isolation alarm device, which comprises a shell, a communication internal network monitoring unit, a communication external network monitoring unit, a shielding cover, a photoelectric conversion cross-network unit, an internal network DC power supply input interface, an external network DC power supply input interface, an input telephone interface, an output telephone interface and a network communication port; compared with the prior art, the beneficial effects of the utility model are that: the internal and public telephone networks can realize complete physical isolation and cross-network telephone alarm; the shielding cover can ensure that the communication intranet monitoring unit has no electromagnetic information leakage; infrared laser triggering, low power, very good linearity and no modulation; the power supply of the communication internal network monitoring unit and the power supply of the communication external network monitoring unit are completely separated, so that the power supply isolation is ensured; reasonable in design, simple structure, stability and security are higher.
Description
Technical Field
The utility model relates to an alarm device field specifically says to an alarm device of transmission is kept apart to inside telephone network and the complete physics of public telephone network.
Background
In situations where security requirements are present, the internal telephone network is completely physically isolated from the public telephone network. When each facility device in the intranet breaks down, the device is required to be capable of automatically carrying out maintenance alarm on the facility device to the public telephone network telephone or the mobile phone where the alarm receiving personnel is located. The device needs to transfer alarm information from the internal telephone network to the public telephone network without any electrical connection, ensuring that internal telephone network information cannot be stolen or tampered with through the public telephone network.
Disclosure of Invention
In order to solve the technical problem, the utility model provides an alarm device which is convenient to install, physically isolated by an internal network and a public telephone network and high in safety.
The utility model adopts the technical proposal that: a cross-network isolation alarm device is technically characterized by comprising a shell, a communication internal network monitoring unit, a communication external network monitoring unit, a shielding case, a photoelectric conversion cross-network unit, an internal network direct-current power supply input interface, an external network direct-current power supply input interface, an input telephone interface, an output telephone interface and a network communication port; a communication inner network monitoring unit, a shielding case, a communication outer network monitoring unit and a photoelectric conversion cross-network unit are arranged in the shell; an internal network direct current power supply input interface, an external network direct current power supply input interface, an 8-path input telephone interface, a 4-path output telephone interface and a network communication port are arranged outside the shell; the communication intranet monitoring unit outside set up the shield cover, the electromagnetic signal of the external radiation of electronic component in the shield unit.
Further, the communication internal network monitoring unit and the communication external network monitoring unit are connected through a photoelectric conversion cross-network unit;
further, the communication intranet monitoring unit is respectively connected with the 8-path input telephone interface and the intranet direct-current power supply input interface;
further, the communication external network monitoring unit is connected with the external network direct-current power supply input interface, the 4-channel output telephone interface and the network communication port;
further, the communication intranet monitoring unit identifies an alarm ringing signal sent from the 8-way intranet input telephone interface; an infrared laser alarm signal can be sent to a communication external network monitoring unit through a photoelectric conversion cross-network unit; the alarm confirmation signal fed back by the communication external network monitoring unit through the photoelectric conversion cross-network unit can be received;
furthermore, the communication intranet monitoring unit can also send a dual-tone multi-frequency signal to an intranet alarm telephone for alarm confirmation according to an extranet alarm confirmation signal;
furthermore, the photoelectric conversion cross-network unit can bidirectionally cross-network and transmit infrared light signals according to the requirements of the alarm signal of the communication internal network monitoring unit and the alarm feedback signal of the communication external network monitoring unit;
furthermore, the communication outer network monitoring unit can also store the inner network alarm channel information and complete the alarm action when the output telephone interface is idle; the dual tone multi frequency signal accessed from the outgoing telephone interface can also be monitored for feedback on alarm conditions.
An alarm device is isolated across networks, which comprises the following installation steps:
1. safety inspection, installation inspection content: mounting upper frame stability inspection and stability inspection of each assembly unit;
2. direct current power input inspection: whether the line color spectrum for the direct-current power supply is standard, whether the original wiring of the host computer is loosened, the correctness and the reliability of the bus connection are checked, and the polarity and the sequence of the power supply connection are checked again;
3. the cross-network isolation alarm device comprises the following wiring contents: the internal network alarm circuit is connected to the input telephone interface through 8 telephone lines in sequence; the external network calling alarm receiving circuit is connected to an output telephone interface through 4 telephone lines in sequence; the network manager is connected to the network communication port through a network cable.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the internal and public telephone networks can realize complete physical isolation and cross-network telephone alarm;
2. the shielding cover can ensure that the communication intranet monitoring unit has no electromagnetic information leakage;
3. infrared laser triggering, low power, very good linearity and no modulation;
4. the power supply of the communication internal network monitoring unit and the power supply of the communication external network monitoring unit are completely separated, so that the power supply isolation is ensured;
5. reasonable in design, simple structure, stability and security are higher.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic block diagram of the present invention;
the parts in the drawings are numbered as follows: 1. a housing; 2. a communication intranet monitoring unit; 3. a communication external network monitoring unit; 4. a shield case; 5. a photoelectric conversion cross-network unit; 6. an internal network direct current power supply input interface; 7. an external network DC power supply input interface; 8. an input telephone interface; 9. an output telephone interface; 10. a network communication port.
Detailed Description
The invention is further explained below with reference to the drawings and the embodiments without limiting the scope of the invention.
In embodiment 1, referring to fig. 1, a housing 1, a communication internal network monitoring unit 2, a communication external network monitoring unit 3, a shielding case 4, a photoelectric conversion cross-network unit 5, an internal network dc power input interface 6, an external network dc power input interface 7, an input telephone interface 8, an output telephone interface 9, and a network communication port 10 are manufactured according to design and processing; a communication inner network monitoring unit 2, a shielding case 4, a communication outer network monitoring unit 3 and a photoelectric conversion cross-network unit 5 are arranged in the shell 1; an internal network direct current power supply input interface 6, an external network direct current power supply input interface 7, an 8-path input telephone interface 8, a 4-path output telephone interface 9 and a network communication port 10 are arranged on the shell 1; a shielding cover 4 is arranged outside the communication intranet monitoring unit 2; the communication intranet monitoring unit 2 and the communication extranet monitoring unit 3 are connected through a photoelectric conversion cross-network unit 5; the communication intranet monitoring unit 2 is respectively connected with an 8-channel input telephone interface 8 and an intranet direct-current power supply input interface 6; the communication external network monitoring unit 3 is connected with an external network direct-current power supply input interface 7, a 4-channel output telephone interface 9 and a network communication port 10; form the utility model discloses a cross net and keep apart alarm device.
The communication intranet monitoring unit identifies an alarm ringing signal sent from the 8-path intranet input telephone interface; an infrared laser alarm signal can be sent to a communication external network monitoring unit through a photoelectric conversion cross-network unit; the alarm confirmation signal fed back by the communication external network monitoring unit through the photoelectric conversion cross-network unit can be received;
the communication intranet monitoring unit can also send a dual-tone multi-frequency signal to an intranet alarm telephone for alarm confirmation according to the external network alarm confirmation signal;
the photoelectric conversion cross-network unit can bidirectionally cross-network and transmit infrared light signals according to the requirements of the alarm signal of the communication internal network monitoring unit and the alarm feedback signal of the communication external network monitoring unit;
the communication external network monitoring unit can also store the internal network alarm channel information and complete the alarm action when the output telephone interface is idle; the dual-tone multi-frequency signal accessed from the output telephone interface can be monitored for feeding back the alarm receiving condition;
the shielding cover can shield electromagnetic signals radiated by electronic elements in the communication intranet monitoring unit.
An alarm device is isolated across networks, which comprises the following installation steps:
1. safety inspection, installation inspection content: mounting upper frame stability inspection and stability inspection of each assembly unit;
2. direct current power input inspection: whether the line color spectrum for the direct-current power supply is standard, whether the original wiring of the host computer is loosened, the correctness and the reliability of the bus connection are checked, and the polarity and the sequence of the power supply connection are checked again;
3. the cross-network isolation alarm device comprises the following wiring contents: the internal network alarm circuit is connected to an input telephone interface 8 through 8 telephone lines in sequence; the external network calling alarm receiving circuit is connected to an output telephone interface 9 through 4 telephone lines in sequence; the network manager is connected to the network communication port 10 through a network cable.
When the system is used, as shown in fig. 2, when a certain channel of the input telephone interface receives a telephone alarm, the corresponding communication internal network monitoring unit identifies a ringing signal, and sends an infrared laser signal without information to the communication external network monitoring unit through the photoelectric conversion cross-network unit, and after the communication external network monitoring unit receives a laser departure signal, the communication external network monitoring unit receives an alarm telephone call received by the output telephone interface according to a preset telephone number according to an alarm sequence. After the alarm receiver picks up the hook, the alarm prompt tone is heard, the alarm voice is repeatedly played according to 0, and the success of the alarm is confirmed according to 1, and the action of hanging up the hook is finished. After the communication external network monitoring unit identifies the channel on-hook signal of the output telephone interface, the photoelectric conversion cross-network unit sends an infrared laser feedback signal without information to the communication internal network monitoring unit, and after the alarm is confirmed to be successful, the channel telephone input into the telephone interface is on-hook to complete the channel alarm.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the internal and public telephone networks can realize complete physical isolation and cross-network telephone alarm;
2. the shielding cover can ensure that the communication intranet monitoring unit has no electromagnetic information leakage;
3. infrared laser triggering, low power, very good linearity and no modulation;
4. the power supply of the communication internal network monitoring unit and the power supply of the communication external network monitoring unit are completely separated, so that the power supply isolation is ensured;
5. reasonable in design, simple structure, stability and security are higher.
Claims (6)
1. The cross-network isolation alarm device is characterized in that: the system comprises a shell, a communication internal network monitoring unit, a communication external network monitoring unit, a shielding case, a photoelectric conversion cross-network unit, an internal network direct-current power supply input interface, an external network direct-current power supply input interface, an input telephone interface, an output telephone interface and a network communication port; a communication inner network monitoring unit, a shielding case, a communication outer network monitoring unit and a photoelectric conversion cross-network unit are arranged in the shell; an internal network direct current power supply input interface, an external network direct current power supply input interface, an 8-path input telephone interface, a 4-path output telephone interface and a network communication port are arranged outside the shell; the communication intranet monitoring unit outside set up the shield cover, the electromagnetic signal of the external radiation of electronic component in the shield unit.
2. The cross-network isolation alarm device of claim 1, wherein: the communication intranet monitoring unit and the communication extranet monitoring unit are connected through a photoelectric conversion cross-network unit, the communication intranet monitoring unit is respectively connected with the 8-path input telephone interface and the intranet direct-current power supply input interface, and the communication extranet monitoring unit is connected with the extranet direct-current power supply input interface, the 4-path output telephone interface and the network communication port.
3. The cross-network isolation alarm device of claim 1, wherein: the communication intranet monitoring unit identifies an alarm ringing signal sent from the 8-path intranet input telephone interface, can send an infrared laser alarm signal to the communication extranet monitoring unit through the photoelectric conversion cross-network unit, and can receive an alarm confirmation signal fed back by the communication extranet monitoring unit through the photoelectric conversion cross-network unit.
4. The cross-network isolation alarm device of claim 1, wherein: the communication intranet monitoring unit can also send a dual-tone multi-frequency signal to an intranet alarm telephone for alarm confirmation according to an extranet alarm confirmation signal.
5. The cross-network isolation alarm device of claim 1, wherein: the photoelectric conversion cross-network unit can transmit infrared light signals in a two-way cross-network mode according to the requirements of the alarm signal of the communication inner network monitoring unit and the alarm feedback signal of the communication outer network monitoring unit.
6. The cross-network isolation alarm device of claim 1, wherein: the communication outer network monitoring unit can also store inner network alarm channel information and complete alarm action when the output telephone interface is idle; the dual tone multi frequency signal accessed from the outgoing telephone interface can also be monitored for feedback on alarm conditions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021499870.5U CN213305490U (en) | 2020-07-27 | 2020-07-27 | Cross-network isolation alarm device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021499870.5U CN213305490U (en) | 2020-07-27 | 2020-07-27 | Cross-network isolation alarm device |
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| CN213305490U true CN213305490U (en) | 2021-05-28 |
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| CN202021499870.5U Active CN213305490U (en) | 2020-07-27 | 2020-07-27 | Cross-network isolation alarm device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114666084A (en) * | 2021-11-04 | 2022-06-24 | 北京盟力星科技有限公司 | Device and method for isolating and transmitting information based on internal network |
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- 2020-07-27 CN CN202021499870.5U patent/CN213305490U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114666084A (en) * | 2021-11-04 | 2022-06-24 | 北京盟力星科技有限公司 | Device and method for isolating and transmitting information based on internal network |
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