CN114050923A - High-adaptability intelligent security gateway equipment with one-way network gate function - Google Patents
High-adaptability intelligent security gateway equipment with one-way network gate function Download PDFInfo
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- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
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Abstract
The invention discloses a high-adaptability intelligent security gateway device with a one-way gateway function, which comprises: the unidirectional network brake module is used for being connected to elevators of different models through various interface buses to receive elevator signals; the decoding module is connected to the unidirectional gatekeeper module to decode the signal received by the unidirectional gatekeeper module; the encryption module is used for connecting the unidirectional gateway module to encrypt and pack the decoded information; and the 4G module is connected to the processor module to transmit the encrypted and packaged information to the background through the 4G network. The high-adaptability intelligent security gateway equipment with the one-way network gate function can be compatible with elevators of various models, and the one-way network gate is added in the communication interface with the elevators, so that the operation data of the elevators can be received and analyzed only in one direction, and the operation of the elevators cannot be influenced by sending any data to the elevators.
Description
Technical Field
The invention relates to a high-adaptability intelligent security gateway device with a one-way gateway function.
Background
The internet of things is that various sensors are used for acquiring any object or process needing monitoring, connection and interaction in real time, acquiring various required information, realizing ubiquitous connection of objects and people through various possible network accesses, and realizing intelligent sensing, identification and management of the objects and the process. In an internet of things system of an elevator, a gateway is accessed to or externally attached with a sensor through a bus to monitor the running state of the elevator, and according to a preset mode, an event is triggered and information is reported.
However, the existing gateway has poor compatibility and can only be used in butt joint with elevators of fixed marks. And the existing gateway can only alarm passively, namely, firstly fails and then alarms.
Disclosure of Invention
The invention provides a high-adaptability intelligent security gateway device with a one-way gateway function, which adopts the following technical scheme:
the utility model provides a high suitability wisdom security gateway equipment that possesses one-way gatekeeper function, contains:
the unidirectional network brake module is used for being connected to elevators of different models through various interface buses to receive elevator signals;
the decoding module is connected to the unidirectional gatekeeper module to decode the signal received by the unidirectional gatekeeper module;
the encryption module is used for connecting the unidirectional gateway module to encrypt and pack the decoded information;
and the 4G module is connected to the processor module to transmit the encrypted and packaged information to the background through the 4G network.
Further, possess high suitability wisdom security gateway equipment of one-way gatekeeper function still contains:
the audio input module is used for being connected to the 4G module and sending the received audio signal to the 4G module so as to be sent to the background through the 4G network;
the audio input module comprises:
the audio interface is used for connecting an external audio device to receive the analog audio signal;
and the audio decoding module is connected to the audio interface and the 4G module so as to convert the analog audio signal accessed to the audio interface into a digital audio signal and send the digital audio signal to the audio decoding module.
Further, possess high suitability wisdom security gateway equipment of one-way gatekeeper function still contains:
the network interface is used for connecting an external camera to receive video signals;
the network port module is used for being connected to the network interface to send the received video signal to the 4G module so as to send the video signal to the background through the 4G network;
the WIFI interface is used for wirelessly connecting external wireless equipment;
and the WIFI module is used for being connected to the WIFI interface to receive and process the wireless signal of the external wireless equipment.
Furthermore, the encryption module, the network interface module and the WIFI module are integrated into a whole ASIC chip.
Further, the unidirectional gatekeeper module includes: RS232 interface submodule, RS485 interface submodule, CAN interface submodule, RSL interface submodule, SPI interface submodule and BIO _ BUS interface submodule.
Further, the decoding module comprises a decoding chip;
the RS232 interface sub-module comprises an RS232 interface circuit;
the RS232 interface circuit comprises: 232 interface chip U11, fuse F6, diode D9, resistor R45, resistor R46, resistor R47, capacitor C49, capacitor C51, capacitor C50, capacitor C48 and capacitor C47;
the GND port of the 232 interface chip U11 is grounded, and the VCC port is connected with 3.3V voltage;
one end of the fuse F6 is connected with the R1N port of the 232 interface chip U11, the other end of the fuse F6 is connected with the diode D9, and the other end of the diode D9 is grounded;
one end of the resistor R45 is connected with the T1IN port of the 232 interface chip U11, and the other end is connected with the decoding chip;
one end of the resistor R46 is connected with the T2IN port of the 232 interface chip U11, and the other end is grounded;
one end of the resistor R47 is connected with the R1OUT port of the 232 interface chip U11, and the other end is connected with the decoding chip;
one end of the capacitor C49 is connected with the C1+ port of the 232 interface chip U11, and the other end is connected with the C1-port of the 232 interface chip U11;
one end of the capacitor C51 is connected with the C2+ port of the 232 interface chip U11, and the other end is connected with the C2-port of the 232 interface chip U11;
one end of the capacitor C50 is connected with the V-port of the 232 interface chip U11, and the other end is grounded;
one end of the capacitor C48 is connected with the V + port of the 232 interface chip U11, and the other end is grounded;
one terminal of the capacitor C47 is connected to the VCC port of the 232 interface chip U11 and the other terminal is connected to ground.
Further, the RS485 interface sub-module comprises an RS485 interface circuit;
the RS485 interface circuit comprises: the 485 interface chip comprises a U7, a fuse F1, a diode D11, a fuse F2, a diode D12, a resistor R40, a resistor R38, a plug JP1, a TVS tube D10, a resistor R35, a capacitor C45, a resistor R36, a resistor R37 and a resistor R41;
the GND port of the 485 interface chip U7 is grounded, and the VCC port is connected with 3.3V voltage;
one end of the fuse F1 is connected with the B port of the 485 interface chip U7, the other end of the fuse F1 is connected with the diode D12, and the other end of the diode D12 is grounded;
one end of the fuse F2 is connected with the A port of the 485 interface chip U7, the other end of the fuse F2 is connected with the diode D11, and the other end of the diode D11 is grounded;
one end of the resistor R40 is connected with the A port of the 485 interface chip U7, and the other end is grounded;
one end of the resistor R38 is connected with the A port of the 485 interface chip U7, the other end of the resistor R38 is connected with one end of the connector JP1, and the other end of the connector JP1 is connected with the B port of the 485 interface chip U7;
the A port of the TVS tube D10 is connected with the A port of the 485 interface chip U7, the B port of the TVS tube D10 is connected with the B port of the 485 interface chip U7, and the G port of the TVS tube D10 is grounded;
one end of the resistor R35 is connected with the port B of the 485 interface chip U7, the other end of the resistor R35 is connected with one end of the capacitor C45, and the other end of the capacitor C45 is grounded;
the VCC end of the 485 interface chip U7 is connected between the resistor R35 and the capacitor C45;
one end of the resistor R36 is connected with the RO port of the 485 interface chip U7, and the other end is connected with the decoding chip;
one end of the resistor R37 is respectively connected with the RE port and the DE port of the 485 interface chip U7, and the other end is connected with the decoding chip;
one end of the resistor R41 is connected to the RE port and the DE port of the 485 interface chip U7 respectively, and the other end is grounded.
Furthermore, the CAN interface submodule comprises a CAN interface circuit;
the CAN interface circuit includes: the device comprises a CAN interface chip U8, a fuse F3, a diode D14, a fuse F4, a diode D15, a resistor R44, a plug connector JP2, a TVS tube D13, a capacitor C46, a resistor R43 and a resistor R45;
the GND port of the CAN interface chip U8 is grounded, and the VCC port is connected with 3.3V voltage;
one end of the fuse F3 is connected with the BCANH port of the CAN interface chip U8, the other end of the fuse F3 is connected with the diode D15, and the other end of the diode D15 is grounded;
one end of the fuse F4 is connected with the BCANL port of the CAN interface chip U8, the other end of the fuse F4 is connected with the diode D14, and the other end of the diode D14 is grounded;
one end of the resistor R44 is connected with a BCANL port of the CAN interface chip U8, the other end of the resistor R44 is connected with one end of a connector JP2, and the other end of the connector JP2 is connected with a BCANH port of the CAN interface chip U8;
the A port of the TVS tube D13 is connected with the BCANL port of the CAN interface chip U8, the B port of the TVS tube D13 is connected with the BCANH port of the CAN interface chip U8, and the G port of the TVS tube D13 is grounded;
one end of the capacitor C46 is connected with the VCC port of the CAN interface chip U8, and the other end is grounded;
one end of the resistor R43 is connected with the S port of the CAN interface chip U8, and the other end is connected with the decoding chip;
one end of the resistor R45 is connected with the RX port of the CAN interface chip U8, and the other end is connected with the decoding chip.
Furthermore, the RSL interface sub-module comprises an RSL interface circuit;
the RSL interface circuit comprises: the voltage detection circuit comprises a voltage comparator U11A, a voltage comparator U11B, a resistor R63, a resistor R62, a capacitor C62, a resistor R69, a resistor R68, a diode D19, a capacitor C63, a resistor R72, a resistor R71, a resistor R66, a resistor R65, a resistor R59, a resistor R57, a resistor R58, a resistor R60, a resistor R64, a resistor R61, a resistor R70 and a resistor R67;
one end of the resistor R63 is connected to the positive terminal of the voltage comparator U11A, the other end of the resistor R62, one end of the diode D18 is connected to the other end of the resistor R62, and the other end of the diode D18 is grounded;
one end of the capacitor C62 is connected with the positive end of the voltage comparator U11A, and the other end is grounded;
one end of the resistor R69 is connected to the positive terminal of the voltage comparator U11B, the other end of the resistor R68, one end of the diode D19 is connected to the other end of the resistor R68, and the other end of the diode D19 is grounded;
one end of the capacitor C63 is connected with the positive end of the voltage comparator U11B, and the other end is grounded;
one end of the resistor R72 is connected with the negative end of the voltage comparator U11B, and the other end is connected between the resistor R62 and the resistor R63;
one end of the resistor R71 is connected with the negative end of the voltage comparator U11B, and the other end is connected with 5V voltage;
one end of the resistor R66 is connected with the negative end of the voltage comparator U11A, and the other end is connected between the resistor R68 and the resistor R69;
one end of the resistor R65 is connected with the negative end of the voltage comparator U11A, and the other end is connected with 5V voltage;
one end of the resistor R59 is connected with the positive end of the voltage comparator U11A, the other end of the resistor R59 is connected with the resistor R57, and the other end of the resistor R57 is connected with 5V voltage;
one end of the resistor R58 is connected with the positive end of the voltage comparator U11B, and the other end is connected between the resistor R57 and the resistor R59;
one end of the resistor R60 is connected between the resistor R57 and the resistor R59, and the other end is grounded;
one end of the resistor R64 is connected with the output end of the voltage comparator U11A, and the other end is connected with the decoding chip;
one end of the resistor R61 is connected with the output end of the voltage comparator U11A, and the other end is connected with 3.3V voltage;
one end of the resistor R70 is connected with the output end of the voltage comparator U11B, and the other end is connected with the decoding chip;
one end of the resistor R67 is connected to the output end of the voltage comparator U11B, and the other end is connected to 3.3V voltage.
Furthermore, the SPI interface submodule comprises an SPI interface circuit;
the SPI interface circuit includes: schmitt trigger U14, resistor R75, resistor R73, resistor R76, R81, resistor R78, resistor R82, resistor R74, resistor R83, resistor R84, capacitor C64, capacitor C65, capacitor C66, diode D20, diode D21, diode D22, resistor R77, resistor R79, resistor R80 and capacitor C67;
the GND port of the Schmitt trigger U14 is grounded, and the VCC port is connected with 3.3V voltage;
one end of the resistor R75 is connected with the port 1A of the Schmidt trigger U14, the other end of the resistor R75 is connected with the resistor R73, and the other end of the resistor R73 is connected with VCC;
one end of the resistor R76 is connected with the 2A port of the Schmidt trigger U14, the other end of the resistor R76 is connected with the resistor R81, and the other end of the resistor R81 is connected with VCC;
one end of the resistor R78 is connected with the 3A port of the Schmidt trigger U14, the other end of the resistor R78 is connected with the resistor R82, and the other end of the resistor R82 is connected with VCC;
one end of the resistor R74 is connected with the port 1A of the Schmidt trigger U14, and the other end is grounded;
one end of the resistor R83 is connected with the 2A port of the Schmidt trigger U14, and the other end is grounded;
one end of the resistor R84 is connected with the 3A port of the Schmidt trigger U14, and the other end is grounded;
one end of the capacitor C64 is connected with the port 1A of the Schmitt trigger U14, and the other end is grounded;
one end of the capacitor C65 is connected with the 2A port of the Schmitt trigger U14, and the other end is grounded;
one end of the capacitor C66 is connected with the 3A port of the Schmitt trigger U14, and the other end is grounded;
one end of the diode D20 is connected with the port 1A of the Schmitt trigger U14, and the other end is grounded;
one end of the diode D21 is connected with the 2A port of the Schmitt trigger U14, and the other end is grounded;
one end of the diode D22 is connected with the 3A port of the Schmitt trigger U14, and the other end is grounded;
one end of the resistor R77 is connected with the 1Y port of the Schmitt trigger U14, and the other end is connected with the decoding chip;
one end of the resistor R79 is connected with the 2Y port of the Schmitt trigger U14, and the other end is connected with the decoding chip;
one end of the resistor R80 is connected with the 3Y port of the Schmitt trigger U14, and the other end is connected with the decoding chip;
capacitor C67 has one terminal connected to the VCC port of schmitt trigger U14 and the other terminal connected to ground.
The high-adaptability intelligent security gateway equipment with the unidirectional network gate function has the advantages that the high-adaptability intelligent security gateway equipment with the unidirectional network gate function can be compatible with elevators of various models, and the unidirectional network gate is added in a communication interface with the elevators, so that the elevator operation data can be received and analyzed only in a unidirectional mode, and the elevator operation cannot be influenced by sending any data to the elevators.
Drawings
Fig. 1 is a schematic diagram of a high-adaptability intelligent security gateway device with a unidirectional gatekeeper function according to a first embodiment of the present invention;
FIG. 2 is a circuit diagram of a decoding module of the present invention;
FIG. 3 is a circuit diagram of the RS232 interface circuit of the present invention;
FIG. 4 is a circuit diagram of the RS485 interface circuit of the present invention;
FIG. 5 is a circuit diagram of the CAN interface circuit of the present invention;
FIG. 6 is a circuit diagram of the RSL interface circuit of the present invention;
FIG. 7 is a circuit diagram of the SPI interface circuit of the present invention;
fig. 8 is a schematic diagram of a high-adaptability smart security gateway device with a unidirectional gatekeeper function according to a second embodiment of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and the embodiments.
Fig. 1 shows a high-adaptability smart security gateway device with unidirectional gatekeeper function according to the present application, which mainly includes: the device comprises a one-way network gate module, a decoding module, an encryption module and a 4G module.
The unidirectional network brake module is used for being connected to elevators of different models through various interface buses to receive elevator signals. The decoding module (shown as MCU1) is connected to the unidirectional gatekeeper module to decode signals received by the unidirectional gatekeeper module. The encryption module (shown as MCU2) is used to connect to the unidirectional gatekeeper module to encrypt and package the decoded information. The 4G module is used for being connected to the processor module so as to transmit the encrypted and packaged information to the background through the 4G network. And the background stores the data after receiving the data, analyzes and learns the data, and gives out early warning when the elevator is predicted to have problems.
Preferably, in order to enable the unidirectional gatekeeper module to receive data of a plurality of models of elevators, the unidirectional gatekeeper module includes: the RS232 interface submodule, the RS485 interface submodule, the CAN interface submodule, the RSL interface submodule, the SPI interface submodule and the BIO _ BUS interface submodule are respectively connected with the elevators of corresponding models.
As shown in fig. 2, the circuit structure of the decoding module includes a decoding chip U12, the decoding chip U12 is a customized MCU, and after a single ladder bus signal is sent to the decoding chip U12, the decoding chip outputs the signal from the resistor R86 and the resistor R87 to the encryption module after decoding processing.
In this application, the function of the unidirectional gatekeeper module is to ensure that only one way reception and analysis of elevator operation data is possible without any data being sent to the elevator to affect elevator operation.
To implement this function, preferably, the RS232 interface sub-module contains an RS232 interface circuit. Specifically, as shown in fig. 3, the RS232 interface circuit includes: 232 interface chip U11, fuse F6, diode D9, resistor R45, resistor R46, resistor R47, capacitor C49, capacitor C51, capacitor C50, capacitor C48 and capacitor C47. The GND port of the 232 interface chip U11 is connected to ground and the VCC port is connected to a voltage of 3.3V. The fuse F6 is connected with the port R1N of the 232 interface chip U11 at one end and connected with the diode D9 at the other end, and the diode D9 is grounded at the other end. The resistor R45 is connected with the T1IN port of the 232 interface chip U11 at one end and the decoding chip at the other end. The resistor R46 has one end connected to the T2IN port of the 232 interface chip U11 and the other end connected to ground. The resistor R47 is connected with the R1OUT port of the 232 interface chip U11 at one end and the decoding chip at the other end. One terminal of the capacitor C49 is connected to the C1+ port of the 232 interface chip U11 and the other terminal is connected to the C1-port of the 232 interface chip U11. One terminal of the capacitor C51 is connected to the C2+ port of the 232 interface chip U11 and the other terminal is connected to the C2-port of the 232 interface chip U11. Capacitor C50 has one terminal connected to the V-port of 232 interface chip U11 and the other terminal connected to ground. Capacitor C48 has one terminal connected to the V + port of 232 interface chip U11 and the other terminal connected to ground. One terminal of the capacitor C47 is connected to the VCC port of the 232 interface chip U11 and the other terminal is connected to ground. The RS232 interface circuit is also provided with a port for accessing elevator signals. Port 232-RX is connected between fuse F6 and diode D9. Thus, the RS-232 signal is connected to the 232 interface chip U11 through the fuse F6, and the signal is converted and then sent to the decoding chip through the resistor R47. Diode D9 and fuse F6 provide the 232 interface with some electrostatic protection from surges. This circuit ensures that the signal can only enter the decoder chip through resistor R47.
In a preferred embodiment, the RS485 interface submodule comprises an RS485 interface circuit. Specifically, as shown in fig. 4, the RS485 interface circuit includes: 485 interface chip U7, fuse F1, diode D11, fuse F2, diode D12, resistance R40, resistance R38, plug JP1, TVS tube D10, resistance R35, capacitor C45, resistance R36, resistance R37 and resistance R41. The GND port of the 485 interface chip U7 is connected to ground and the VCC port is connected to a voltage of 3.3V. One end of the fuse F1 is connected to the B port of the 485 interface chip U7, the other end of the fuse F1 is connected to the diode D12, and the other end of the diode D12 is grounded. One end of the fuse F2 is connected to the A port of the 485 interface chip U7, the other end of the fuse F2 is connected to the diode D11, and the other end of the diode D11 is grounded. One end of the resistor R40 is connected to the A port of the 485 interface chip U7, and the other end is grounded. One end of the resistor R38 is connected with the A port of the 485 interface chip U7, the other end of the resistor R38 is connected with one end of the plug JP1, and the other end of the plug JP1 is connected with the B port of the 485 interface chip U7. The A port of the TVS tube D10 is connected with the A port of the 485 interface chip U7, the B port of the TVS tube D10 is connected with the B port of the 485 interface chip U7, and the G port of the TVS tube D10 is grounded. One end of the resistor R35 is connected to the B port of the 485 interface chip U7, the other end is connected to one end of the capacitor C45, and the other end of the capacitor C45 is grounded. The VCC terminal of the 485 interface chip U7 is connected between the resistor R35 and the capacitor C45. One end of the resistor R36 is connected with the RO port of the 485 interface chip U7, and the other end is connected with the decoding chip. One end of the resistor R37 is respectively connected with the RE port and the DE port of the 485 interface chip U7, and the other end is connected with the decoding chip. One end of the resistor R41 is connected to the RE port and the DE port of the 485 interface chip U7 respectively, and the other end is grounded. The RS485 interface circuit is also provided with two ports for accessing elevator signals. With the first port 458-B connected between fuse F1 and diode D12 and the second port 485-B connected between fuse F2 and diode D12. Thus, the RS485 differential signal passes through the fuse F1, the fuse F2 is connected into the U7, and the signal is converted and then sent into a decoding chip through the resistor R36. The TVS tube D10, the diode D11, the diode D12, the fuse F1 and the fuse F2 provide certain surge electrostatic protection for the 485 interface. This circuit ensures that the signal can only enter the decoder chip through resistor R36.
In a preferred embodiment, the CAN interface submodule contains a CAN interface circuit. Specifically, as shown in fig. 5, the CAN interface circuit includes: CAN interface chip U8, fuse F3, diode D14, fuse F4, diode D15, resistor R44, plug JP2, TVS tube D13, capacitor C46, resistor R43 and resistor R45. The GND port of the CAN interface chip U8 is grounded and the VCC port is connected with 3.3V voltage. One end of the fuse F3 is connected to the BCANH port of the CAN interface chip U8, the other end of the fuse F3 is connected to the diode D15, and the other end of the diode D15 is grounded. One end of the fuse F4 is connected to the BCANL port of the CAN interface chip U8, the other end of the fuse F4 is connected to the diode D14, and the other end of the diode D14 is grounded. One end of the resistor R44 is connected with the BCANL port of the CAN interface chip U8, the other end of the resistor R44 is connected with one end of the connector JP2, and the other end of the connector JP2 is connected with the BCANH port of the CAN interface chip U8. The A port of the TVS tube D13 is connected with the BCANL port of the CAN interface chip U8, the B port of the TVS tube D13 is connected with the BCANH port of the CAN interface chip U8, and the G port of the TVS tube D13 is grounded. One end of the capacitor C46 is connected to the VCC port of the CAN interface chip U8, and the other end is grounded. One end of the resistor R43 is connected with the S port of the CAN interface chip U8, and the other end is connected with the decoding chip. One end of the resistor R45 is connected with the RX port of the CAN interface chip U8, and the other end is connected with the decoding chip. The CAN interface circuit is also provided with two ports for accessing elevator signals. Wherein the first port CAN-H is connected between fuse F3 and diode D15 and the second port CAN-L is connected between fuse F4 and diode D14. Therefore, the CAN differential signal passes through the fuse F3, the fuse F4 is connected to the CAN interface chip U8, and the signal is converted and then sent to the decoding chip through the resistor R45. The TVS tube D13, the diode D14, the diode D15, the fuse F3 and the fuse F4 provide certain surge electrostatic protection for the CAN interface. This circuit ensures that the signal can only enter the decoder chip through resistor R45.
As a preferred embodiment, the RSL interface sub-module comprises an RSL interface circuit. Specifically, as shown in fig. 6, the RSL interface circuit includes: the voltage comparator U11A, the voltage comparator U11B, resistance R63, resistance R62, capacitance C62, resistance R69, resistance R68, diode D19, capacitance C63, resistance R72, resistance R71, resistance R66, resistance R65, resistance R59, resistance R57, resistance R58, resistance R60, resistance R64, resistance R61, resistance R70 and resistance R67. One end of the resistor R63 is connected to the positive terminal of the voltage comparator U11A, and the other end is connected to the resistor R62, and one end of the diode D18 is connected to the other end of the resistor R62, and the other end is grounded. One end of the capacitor C62 is connected to the positive terminal of the voltage comparator U11A, and the other end is grounded. One end of the resistor R69 is connected to the positive terminal of the voltage comparator U11B, and the other end is connected to the resistor R68, and one end of the diode D19 is connected to the other end of the resistor R68, and the other end is grounded. One end of the capacitor C63 is connected to the positive terminal of the voltage comparator U11B, and the other end is grounded. One end of the resistor R72 is connected to the negative terminal of the voltage comparator U11B, and the other end is connected between the resistor R62 and the resistor R63. One end of the resistor R71 is connected with the negative pole end of the voltage comparator U11B, and the other end is connected with 5V voltage. One end of the resistor R66 is connected to the negative terminal of the voltage comparator U11A, and the other end is connected between the resistor R68 and the resistor R69. One end of the resistor R65 is connected with the negative pole end of the voltage comparator U11A, and the other end is connected with 5V voltage. One end of the resistor R59 is connected with the positive end of the voltage comparator U11A, the other end is connected with the resistor R57, and the other end of the resistor R57 is connected with 5V voltage. One end of the resistor R58 is connected with the positive end of the voltage comparator U11B, and the other end is connected between the resistor R57 and the resistor R59. The resistor R60 has one end connected between the resistor R57 and the resistor R59 and the other end connected to ground. One end of the resistor R64 is connected to the output end of the voltage comparator U11A, and the other end is connected to the decoding chip. One end of the resistor R61 is connected to the output end of the voltage comparator U11A, and the other end is connected to 3.3V voltage. One end of the resistor R70 is connected to the output end of the voltage comparator U11B, and the other end is connected to the decoding chip. One end of the resistor R67 is connected to the output end of the voltage comparator U11B, and the other end is connected to 3.3V voltage. The RSL interface is also provided with two ports for accessing elevator signals. The first port RSL _ DA is connected between the resistor R62 and the diode D18, and the second port RSL _ CLK is connected between the resistor R68 and the diode D19. The RSL signal is connected to the voltage comparator U11 through the resistor R62 and the resistor R68, and the shaped signal is sent to the decoding chip through the resistor R64 and the resistor R70. Diode D18 and diode D19 provide some surge and electrostatic protection to the RSL interface. The circuit design only has data input RSL _ DA _ IN and clock input RSL _ CLK _ IN, and no data output circuit is designed, so that the signals can only be connected to the decoding chip after being shaped by the voltage comparator U11.
In a preferred embodiment, the SPI interface submodule contains an SPI interface circuit. Specifically, as shown in fig. 7, the SPI interface circuit includes: schmitt trigger U14, resistor R75, resistor R73, resistor R76, R81, resistor R78, resistor R82, resistor R74, resistor R83, resistor R84, capacitor C64, capacitor C65, capacitor C66, diode D20, diode D21, diode D22, resistor R77, resistor R79, resistor R80 and capacitor C67. The GND port of schmitt trigger U14 is connected to ground and the VCC port is connected to a voltage of 3.3V. One end of the resistor R75 is connected with the 1A port of the Schmidt trigger U14, the other end of the resistor R75 is connected with the resistor R73, and the other end of the resistor R73 is connected with VCC. One end of the resistor R76 is connected with the 2A port of the Schmidt trigger U14, the other end of the resistor R76 is connected with the resistor R81, and the other end of the resistor R81 is connected with VCC. One end of the resistor R78 is connected with the 3A port of the Schmidt trigger U14, the other end of the resistor R78 is connected with the resistor R82, and the other end of the resistor R82 is connected with VCC. Resistor R74 has one end connected to 1A port of Schmitt trigger U14 and the other end connected to ground. Resistor R83 has one end connected to the 2A port of Schmitt trigger U14 and the other end connected to ground. Resistor R84 has one end connected to the 3A port of Schmitt trigger U14 and the other end connected to ground. Capacitor C64 has one terminal connected to the 1A port of schmitt trigger U14 and the other terminal connected to ground. Capacitor C65 has one terminal connected to the 2A port of schmitt trigger U14 and the other terminal connected to ground. Capacitor C66 has one terminal connected to the 3A port of schmitt trigger U14 and the other terminal connected to ground. Diode D20 has one end connected to the 1A port of schmitt trigger U14 and the other end connected to ground. Diode D21 has one end connected to the 2A port of schmitt trigger U14 and the other end connected to ground. Diode D22 has one end connected to the 3A port of schmitt trigger U14 and the other end connected to ground. One end of the resistor R77 is connected with the 1Y port of the Schmitt trigger U14, and the other end is connected with the decoding chip. One end of the resistor R79 is connected with the 2Y port of the Schmitt trigger U14, and the other end is connected with the decoding chip. One end of the resistor R80 is connected with the 3Y port of the Schmitt trigger U14, and the other end is connected with the decoding chip. Capacitor C67 has one terminal connected to the VCC port of schmitt trigger U14 and the other terminal connected to ground. The SPI interface is also provided with three ports for accessing elevator signals. The first port SPI _ DA is connected between the resistor R73 and the resistor R75, the second port SPI _ CLK is connected between the resistor R76 and the resistor R81, and the third port SPI _ CS is connected between the resistor R78 and the resistor R82. Diode D20, diode D21, and diode D22 limit the input signal amplitude and protect the input voltage of schmitt trigger U14 from being higher than the limit. The circuit is designed with a data input SPI _ DA _ IN, a clock input SPI _ CLK _ IN, a chip select input SPI _ CS _ IN and no signal output circuit.
As shown in fig. 8, according to another embodiment of the present application, the high-adaptability smart security gateway device with a unidirectional gatekeeper function includes an audio input module in addition to a unidirectional gatekeeper module, a decoding module (shown as an MCU), an encryption module, and a 4G module. The audio input module is used for being connected to the 4G module and sending the received audio signals to the 4G module so as to be sent to the background through the 4G network. Specifically, the audio input module includes: an Audio interface (Phone I/F) for connecting an external Audio device to receive an analog Audio signal, and an Audio decoding module (Audio CODEC). The audio decoding module is used for being connected to the audio interface and the 4G module so as to convert the analog audio signal accessed to the audio interface into a digital audio signal and then send the digital audio signal to the audio decoding module. Which is used to provide audio five-way intercom functionality.
Further, possess high suitability wisdom security gateway equipment of one-way gatekeeper function still contains: network interfaces (WAN/LAN1 and WAN/LAN2), a network port module, a WIFI interface and a WIFI module. The network interface is used for connecting an external camera to receive video signals. The network port module is used for being connected to the network interface to send the received video signal to the 4G module to be sent to the background through the 4G network. In this way the data taken by the camera in the elevator can be transmitted to the background. The WIFI interface is used for wirelessly connecting external wireless equipment. The WIFI module is used for being connected to the WIFI interface to receive and process wireless signals of external wireless equipment.
As a preferred embodiment, as shown in fig. 2, the encryption module, the internet access module and the WIFI module are an integrated chip. Specifically, an ASIC chip is integrated as a whole. This ASIC chip has integrateed MCU and has encrypted, the function of WIFI and net gape, can link the 4G module through the high-speed interface of USB, provides the video transmission passageway.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.
Claims (10)
1. The utility model provides a high suitability wisdom security gateway equipment that possesses one-way gatekeeper function which characterized in that contains:
the unidirectional network brake module is used for being connected to elevators of different models through various interface buses to receive elevator signals;
the decoding module is connected to the unidirectional gatekeeper module to decode the signal received by the unidirectional gatekeeper module;
the encryption module is connected to the unidirectional gatekeeper module to encrypt and pack the decoded information;
and the 4G module is connected to the processor module to transmit the encrypted and packaged information to a background through a 4G network.
2. The security gateway of claim 1, wherein the security gateway is a one-way gateway,
possess high adaptability wisdom security gateway equipment of one-way gatekeeper function still contains:
the audio input module is connected to the 4G module and used for sending the received audio signals to the 4G module so as to send the audio signals to a background through a 4G network;
the audio input module includes:
the audio interface is used for connecting an external audio device to receive the analog audio signal;
and the audio decoding module is connected to the audio interface and the 4G module so as to convert the analog audio signal accessed to the audio interface into a digital audio signal and then send the digital audio signal to the audio decoding module.
3. The security gateway of claim 1, wherein the security gateway is a one-way gateway,
possess high adaptability wisdom security gateway equipment of one-way gatekeeper function still contains:
the network interface is used for connecting an external camera to receive video signals;
the network port module is connected to the network interface to send the received video signal to the 4G module so as to send the video signal to a background through a 4G network;
the WIFI interface is used for wirelessly connecting external wireless equipment;
and the WIFI module is connected to the WIFI interface to receive and process the wireless signal of the external wireless equipment.
4. The security gateway of claim 3, wherein the security gateway is a one-way gateway,
the encryption module, the network port module and the WIFI module are integrated into a whole ASIC chip.
5. The security gateway of claim 1, wherein the security gateway is a one-way gateway,
the unidirectional gatekeeper module includes: RS232 interface submodule, RS485 interface submodule, CAN interface submodule, RSL interface submodule, SPI interface submodule and BIO _ BUS interface submodule.
6. The security gateway of claim 5, wherein the security gateway is a one-way gateway,
the decoding module comprises a decoding chip;
the RS232 interface sub-module comprises an RS232 interface circuit;
the RS232 interface circuit includes: 232 interface chip U11, fuse F6, diode D9, resistor R45, resistor R46, resistor R47, capacitor C49, capacitor C51, capacitor C50, capacitor C48 and capacitor C47;
the GND port of the 232 interface chip U11 is grounded, and the VCC port is connected with 3.3V voltage;
one end of the fuse F6 is connected with the R1N port of the 232 interface chip U11, the other end of the fuse F6 is connected with the diode D9, and the other end of the diode D9 is grounded;
one end of the resistor R45 is connected with the T1IN port of the 232 interface chip U11, and the other end is connected with the decoding chip;
one end of the resistor R46 is connected with the T2IN port of the 232 interface chip U11, and the other end is grounded;
one end of the resistor R47 is connected with the R1OUT port of the 232 interface chip U11, and the other end is connected with the decoding chip;
one end of the capacitor C49 is connected with the C1+ port of the 232 interface chip U11, and the other end is connected with the C1-port of the 232 interface chip U11;
one end of the capacitor C51 is connected with the C2+ port of the 232 interface chip U11, and the other end is connected with the C2-port of the 232 interface chip U11;
one end of the capacitor C50 is connected with the V-port of the 232 interface chip U11, and the other end is grounded;
one end of the capacitor C48 is connected with the V + port of the 232 interface chip U11, and the other end is grounded;
one terminal of the capacitor C47 is connected to the VCC port of the 232 interface chip U11 and the other terminal is connected to ground.
7. The security gateway of claim 6, wherein the security gateway is a one-way gateway,
the RS485 interface sub-module comprises an RS485 interface circuit;
the RS485 interface circuit comprises: the 485 interface chip comprises a U7, a fuse F1, a diode D11, a fuse F2, a diode D12, a resistor R40, a resistor R38, a plug JP1, a TVS tube D10, a resistor R35, a capacitor C45, a resistor R36, a resistor R37 and a resistor R41;
the GND port of the 485 interface chip U7 is grounded, and the VCC port is connected with 3.3V voltage;
one end of the fuse F1 is connected with the B port of the 485 interface chip U7, the other end of the fuse F1 is connected with the diode D12, and the other end of the diode D12 is grounded;
one end of the fuse F2 is connected with the A port of the 485 interface chip U7, the other end of the fuse F2 is connected with the diode D11, and the other end of the diode D11 is grounded;
one end of the resistor R40 is connected with the A port of the 485 interface chip U7, and the other end is grounded;
one end of the resistor R38 is connected with the A port of the 485 interface chip U7, the other end of the resistor R38 is connected with one end of the connector JP1, and the other end of the connector JP1 is connected with the B port of the 485 interface chip U7;
the A port of the TVS tube D10 is connected with the A port of the 485 interface chip U7, the B port of the TVS tube D10 is connected with the B port of the 485 interface chip U7, and the G port of the TVS tube D10 is grounded;
one end of the resistor R35 is connected with the port B of the 485 interface chip U7, the other end of the resistor R35 is connected with one end of the capacitor C45, and the other end of the capacitor C45 is grounded;
the VCC end of the 485 interface chip U7 is connected between the resistor R35 and the capacitor C45;
one end of the resistor R36 is connected with the RO port of the 485 interface chip U7, and the other end is connected with the decoding chip;
one end of the resistor R37 is respectively connected with the RE port and the DE port of the 485 interface chip U7, and the other end is connected with the decoding chip;
one end of the resistor R41 is connected to the RE port and the DE port of the 485 interface chip U7 respectively, and the other end is grounded.
8. The security gateway of claim 6, wherein the security gateway is a one-way gateway,
the CAN interface sub-module comprises a CAN interface circuit;
the CAN interface circuit includes: the device comprises a CAN interface chip U8, a fuse F3, a diode D14, a fuse F4, a diode D15, a resistor R44, a plug connector JP2, a TVS tube D13, a capacitor C46, a resistor R43 and a resistor R45;
the GND port of the CAN interface chip U8 is grounded, and the VCC port is connected with 3.3V voltage;
one end of the fuse F3 is connected with the BCANH port of the CAN interface chip U8, the other end of the fuse F3 is connected with the diode D15, and the other end of the diode D15 is grounded;
one end of the fuse F4 is connected with the BCANL port of the CAN interface chip U8, the other end of the fuse F4 is connected with the diode D14, and the other end of the diode D14 is grounded;
one end of the resistor R44 is connected with a BCANL port of the CAN interface chip U8, the other end of the resistor R44 is connected with one end of a connector JP2, and the other end of the connector JP2 is connected with a BCANH port of the CAN interface chip U8;
the A port of the TVS tube D13 is connected with the BCANL port of the CAN interface chip U8, the B port of the TVS tube D13 is connected with the BCANH port of the CAN interface chip U8, and the G port of the TVS tube D13 is grounded;
one end of the capacitor C46 is connected with the VCC port of the CAN interface chip U8, and the other end is grounded;
one end of the resistor R43 is connected with the S port of the CAN interface chip U8, and the other end is connected with the decoding chip;
one end of the resistor R45 is connected with the RX port of the CAN interface chip U8, and the other end is connected with the decoding chip.
9. The security gateway of claim 6, wherein the security gateway is a one-way gateway,
the RSL interface sub-module comprises an RSL interface circuit;
the RSL interface circuit includes: the voltage detection circuit comprises a voltage comparator U11A, a voltage comparator U11B, a resistor R63, a resistor R62, a capacitor C62, a resistor R69, a resistor R68, a diode D19, a capacitor C63, a resistor R72, a resistor R71, a resistor R66, a resistor R65, a resistor R59, a resistor R57, a resistor R58, a resistor R60, a resistor R64, a resistor R61, a resistor R70 and a resistor R67;
one end of the resistor R63 is connected to the positive terminal of the voltage comparator U11A, the other end of the resistor R62, one end of the diode D18 is connected to the other end of the resistor R62, and the other end of the diode D18 is grounded;
one end of the capacitor C62 is connected with the positive end of the voltage comparator U11A, and the other end is grounded;
one end of the resistor R69 is connected to the positive terminal of the voltage comparator U11B, the other end of the resistor R68, one end of the diode D19 is connected to the other end of the resistor R68, and the other end of the diode D19 is grounded;
one end of the capacitor C63 is connected with the positive end of the voltage comparator U11B, and the other end is grounded;
one end of the resistor R72 is connected with the negative end of the voltage comparator U11B, and the other end is connected between the resistor R62 and the resistor R63;
one end of the resistor R71 is connected with the negative end of the voltage comparator U11B, and the other end is connected with 5V voltage;
one end of the resistor R66 is connected with the negative end of the voltage comparator U11A, and the other end is connected between the resistor R68 and the resistor R69;
one end of the resistor R65 is connected with the negative end of the voltage comparator U11A, and the other end is connected with 5V voltage;
one end of the resistor R59 is connected with the positive end of the voltage comparator U11A, the other end of the resistor R59 is connected with the resistor R57, and the other end of the resistor R57 is connected with 5V voltage;
one end of the resistor R58 is connected with the positive end of the voltage comparator U11B, and the other end is connected between the resistor R57 and the resistor R59;
one end of the resistor R60 is connected between the resistor R57 and the resistor R59, and the other end is grounded;
one end of the resistor R64 is connected with the output end of the voltage comparator U11A, and the other end is connected with the decoding chip;
one end of the resistor R61 is connected with the output end of the voltage comparator U11A, and the other end is connected with 3.3V voltage;
one end of the resistor R70 is connected with the output end of the voltage comparator U11B, and the other end is connected with the decoding chip;
one end of the resistor R67 is connected to the output end of the voltage comparator U11B, and the other end is connected to 3.3V voltage.
10. The security gateway of claim 6, wherein the security gateway is a one-way gateway,
the SPI interface submodule comprises an SPI interface circuit;
the SPI interface circuit includes: schmitt trigger U14, resistor R75, resistor R73, resistor R76, R81, resistor R78, resistor R82, resistor R74, resistor R83, resistor R84, capacitor C64, capacitor C65, capacitor C66, diode D20, diode D21, diode D22, resistor R77, resistor R79, resistor R80 and capacitor C67;
the GND port of the Schmitt trigger U14 is grounded, and the VCC port is connected with 3.3V voltage;
one end of the resistor R75 is connected with the port 1A of the Schmidt trigger U14, the other end of the resistor R75 is connected with the resistor R73, and the other end of the resistor R73 is connected with VCC;
one end of the resistor R76 is connected with the 2A port of the Schmidt trigger U14, the other end of the resistor R76 is connected with the resistor R81, and the other end of the resistor R81 is connected with VCC;
one end of the resistor R78 is connected with the 3A port of the Schmidt trigger U14, the other end of the resistor R78 is connected with the resistor R82, and the other end of the resistor R82 is connected with VCC;
one end of the resistor R74 is connected with the port 1A of the Schmidt trigger U14, and the other end is grounded;
one end of the resistor R83 is connected with the 2A port of the Schmidt trigger U14, and the other end is grounded;
one end of the resistor R84 is connected with the 3A port of the Schmidt trigger U14, and the other end is grounded;
one end of the capacitor C64 is connected with the port 1A of the Schmitt trigger U14, and the other end is grounded;
one end of the capacitor C65 is connected with the 2A port of the Schmitt trigger U14, and the other end is grounded;
one end of the capacitor C66 is connected with the 3A port of the Schmitt trigger U14, and the other end is grounded;
one end of the diode D20 is connected with the port 1A of the Schmitt trigger U14, and the other end is grounded;
one end of the diode D21 is connected with the 2A port of the Schmitt trigger U14, and the other end is grounded;
one end of the diode D22 is connected with the 3A port of the Schmitt trigger U14, and the other end is grounded;
one end of the resistor R77 is connected with the 1Y port of the Schmitt trigger U14, and the other end is connected with the decoding chip;
one end of the resistor R79 is connected with the 2Y port of the Schmitt trigger U14, and the other end is connected with the decoding chip;
one end of the resistor R80 is connected with the 3Y port of the Schmitt trigger U14, and the other end is connected with the decoding chip;
capacitor C67 has one terminal connected to the VCC port of schmitt trigger U14 and the other terminal connected to ground.
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| CN210428146U (en) * | 2019-09-19 | 2020-04-28 | 广州慧特安科技有限公司 | Elevator state monitoring device and system |
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