TWM477737U - Multi-loop backup communication system - Google Patents

Description

Multi-loop backup communication system

The present invention relates to a communication system, and more particularly to a multi-loop backup communication system.

According to the quality of communication systems (such as access control, security systems, etc.), in addition to the speed and functionality of communication, life and durability are also very important factors. Among them, the interface for playing data and transmission in the communication system is usually the input/output module (I/O Module). However, the current development direction of the input/output module mainly focuses on the expansion or control of the contact, although the contact point The expansion enables the input/output modules to be connected to a wider variety of products, but the connection between each product and the input/output module is still mostly designed with a single communication loop, so when any communication loop fails, Maintenance personnel must be sent to repair, which not only increases labor costs, but also affects the company's image and product quality if the product is often repaired.

In view of the above problems, the present invention provides a multi-loop backup communication system, including an upstream host, a downstream device, and a relay module. The upstream host includes a first communication port, and the downstream device includes a second communication port. The relay module includes two uplink ports and two downlink ports, and each uplink port is respectively connected to the first communication port of the upstream host, and each downlink port is respectively connected to the The second communication port of the downstream device, wherein one of the uplink ports and one of the downlink ports are preset, and the other uplink ports and downlink ports are backup devices. Thereby, when the device or the line that is preset or connected to the preset device is damaged, the preset device can be replaced by the backup source, and the normal operation can be continued. Therefore, maintenance personnel do not need to go immediately to eliminate errors, which can reduce labor costs.

In an embodiment, the multi-loop backup communication system may further include another relay module, wherein one of the two relay modules is connected to one of the upstream hosts, and the other of the two relay modules One of the uplink ports is connected to another upstream host, and one of the two relay modules is connected to one of the two downstream devices, and the downstream port of the other relay module is connected to another downstream device, wherein One of the two relay modules is preset to be in a working state, and the other relay module is preset to a standby state.

The downstream devices may be other relay modules. Alternatively, the downstream device can be an access card machine, a security sensor, or a home appliance.

The first communication port and the second communication port can support the same communication protocol, and the communication protocol can be a Universal Asynchronous Receiver/Transmitter.

In summary, the creation is connected to the two upstream hosts through the two uplink ports of the relay module, and the second downlink ports are respectively connected to the two downstream devices, and one of the uplink ports and one of the downlink ports are preset.埠, other uplinks and downlinks are backup devices, so that the relay module can detect when one of the preset ports fails, such as the upstream host, relay module or preset port. If the fault occurs, or the line connected to the upstream host and the preset port is damaged, the default communication failure occurs, that is, the corresponding backup and external communication are switched, thereby increasing the service life and durability of the communication system, and reducing the maintenance labor cost. Improve practical progress such as customer satisfaction.

On the other hand, the first communication port and the second communication port support the same communication protocol, so that the uplink port and the downlink port can use the same transmission interface, so that the switchover backup does not need to be converted by other devices, but can The function and purpose of system backup are achieved in the simplest and most cost-effective architecture.

The detailed features and advantages of the present invention are described in detail below in the embodiments, which are sufficient to enable any skilled artisan to understand the technical contents of the present invention and implement it according to the contents, the scope of the patent application and the drawings. Anyone familiar with the relevant art can easily understand the purpose and advantages of this creation.

As shown in FIG. 1 , the present invention provides a multi-loop backup communication system 1 including an upstream host 10, a downstream device 20, and a relay module 30. The upstream host 10 must have communication capabilities, such as wireless (Wifi, Bluetooth, ZigBee) and wired (UART) transmission signals, while the upstream host 10 can specifically use a digital video recorder (DVR), network Video Recorder (NVR), network monitoring host, personal computer or mobile communication device, etc. The downstream device 20 may be an access card machine, a security sensor, or a home appliance, but is not limited thereto, and may be another relay module 30.

The upstream host 10 may include a first communication port 11, the downstream device 20 may include a second communication port 21, and the relay module 30 includes two uplink ports 31 and two downlink ports 32, and the second uplink ports 31 are respectively connected to The first communication port 11 of the upstream host 10 and the second downlink port 32 are respectively connected to the second communication port 21 of the downstream device 20, and one of the uplink ports 31 and the downlink port 32 can be preset, and other uplink ports 31 and downlink ports. 32 can be used for backup. Here, the line connected to the preset 埠 is indicated by a solid line, and the line connecting the backup 埠 is indicated by a broken line, thereby constituting a dual communication loop backup type. The upstream host 10, the downstream device 20, and the relay module 30 connected to the preset port may be preset to be in an active state, and the upstream host 10, the downstream device 20, and the relay module 30 connected to the backup device are preset to Backup status.

In this way, when the relay module 30 detects that the communication of the preset port fails, the corresponding backup external communication can be switched, thereby increasing the service life and durability of the communication system, and reducing the maintenance labor cost and improving the customer. Satisfaction and other advantages.

As shown in FIG. 2, the multi-circuit backup communication system 1 of the present invention may further include another relay module 30, and the upstream port 31 of one of the relay modules 30 is connected to one of the two upstream hosts 10, and The upstream port 31 of one relay module 30 is connected to another upstream host 10, and the downstream port 32 of one of the relay modules 30 is connected to one of the two downstream devices 20, and the other relay module 30 is downlinked. The 埠32 is connected to another downstream device 20 to form a multi-loop backup architecture, and one of the relay modules 30 can be preset to be in an active state, and the other relay module 30 can be preset to a backup state. Therefore, whether the upstream host 10, the relay module 30, the uplink port 31, or the downlink port 32 is damaged and the communication is invalid, the corresponding upstream host 10, the relay module 30, and the uplink can be switched. 31 or downlink 埠 32 takes over the external communication, so that the multi-circuit backup communication system 1 can continue to operate. The above embodiments are for illustrative purposes only, and are not limited thereto. The number of changes in the upstream host 10, the relay module 30, the downstream device 20, or the above three communication ports should be covered in the scope of the present technical features. Further, for example, the upstream host 10 may further include a third communication port to connect a relay module 30 through the first communication port 11 and connect another relay module 30 through the third communication port, or The multi-loop backup communication system 1 can include a plurality of downstream devices 20.

In addition, as shown in FIG. 3, the specific composition of the foregoing relay module 30 may further include a communication unit 33, a control unit 34, and a memory unit 35. The communication unit 33 may include a wireless communication interface 331 (Wifi, Bluetooth, ZigBee) and Wired communication interface 332 (UART); memory unit 35 can be rewritable read only memory (EEPROM), flash memory (FLASH RAM) or embedded memory (FRAM) for storing communication data; and control unit The 34 may be a microcontroller (MCU) or a central control unit (CPU), and may specifically include an analog/digital conversion device (ADC), a timer, a counter, etc., so that the relay module 30 is provided. It can measure parameters such as communication delay time, communication return time and communication timeout time, and can further judge whether the communication status is abnormal. In addition, it can also judge whether the feedback voltage value is expected through the analog/digital converter (ADC). The value is used to detect whether the communication status is abnormal. When the relay module 30 detects that the communication status is abnormal, the corresponding backup device is switched. In addition, the relay module 30 can include a digital input/output unit 36 and an analog input/output unit 37 to enable the relay module 30 to support different signal formats.

As shown in FIG. 4, the upstream host 10 may further include a network communication port 12 for exchanging data acquired from the relay module 30 via the regional network, for example, the upstream host 10 in the working state After obtaining the data, the relay module 30 can immediately transmit the acquired data to the upstream host 10 in the backup state through the network communication port 12, and cause the upstream host 10 in the working state to generate an abnormality and switch to the upstream host in the backup state. At 10 o'clock, the data of the two can be consistent with each other, so that the system will not be out of sync, abnormal or wrong.

As shown in FIG. 4, the upstream host 10 is more communicably connected to the database host 40. Here, the upstream host 10 and the database host 40 can communicate through the area network communication, but not limited thereto. The database host 40 can be a cloud database or a host database, so that the communication data of the upstream host 10, the downstream device 20, or the relay module 30 can be transmitted to the database host 40 for storage. For example, when the upstream host 10 is a digital video recorder (DVR) or a network video recorder (NVR), and the downstream device 20 is an access card player, in addition to transmitting the access control related data to the database host In addition to 40, the image data obtained by the digital video recorder (DVR) or the network video recorder (NVR) can also be transmitted to the database host 40 for storage, so that when the downstream device 20 is replaced, The database host 40 returns the access control related data and settings, making the multi-circuit backup communication system 1 more convenient and smooth.

The first communication port 11 and the second communication port 21 can support the same communication protocol, and the communication protocol can be a parallel transmission interface or a serial transmission interface. Here, the first communication port 11 of the creation is The preferred communication protocol supported by the second communication port 21 is a Universal Asynchronous Receiver/Transmitter, such as a serial communication interface such as RS-232, RS-422 or RS-485. A communication port 11 and the second communication port 21 can support the same communication protocol, so that the uplink port 31 and the downlink port 32 can use the same transmission interface (that is, the above-mentioned asynchronous serial port transmission interface), so that the switching backup is not It is necessary to perform signal conversion through other devices, and the functions and purposes of system backup can be achieved in the simplest and most cost-effective manner.

In summary, the creation is connected to the two upstream hosts through the two uplink ports of the relay module, and the second downlink ports are respectively connected to the two downstream devices, and one of the uplink ports and one of the downlink ports are preset.埠, other uplinks and downlinks are backup devices, so that the relay module can detect when one of the preset ports fails, such as the upstream host, relay module or preset port. If the fault occurs, or the line connected to the upstream host and the preset port is damaged, the default communication failure occurs, that is, the corresponding backup and external communication are switched, thereby increasing the service life and durability of the communication system, and reducing the maintenance labor cost. Improve practical progress such as customer satisfaction.

Although the technical content of the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention. Anyone who is familiar with the art, and some modifications and refinements that do not depart from the spirit of the present invention should be included in the creation. Therefore, the scope of protection of this creation is subject to the definition of the scope of the patent application.

1‧‧‧Multi-circuit backup communication system
10‧‧‧Upstream host
11‧‧‧First Communication埠
12‧‧‧Network Communication埠
20‧‧‧ downstream equipment
21‧‧‧Second Communications埠
30‧‧‧Relay module
31‧‧‧Upstream
32‧‧‧ Downstream
33‧‧‧Communication unit
331‧‧‧Wireless communication interface
332‧‧‧Wired communication interface
34‧‧‧Control unit
35‧‧‧ memory unit
36‧‧‧Digital Input/Output Unit
37‧‧‧ analog input/output unit
40‧‧‧Database Host

[Fig. 1] is a system block diagram of the multi-circuit backup communication system of the present creation; [Fig. 2] is another embodiment of the present multi-circuit backup communication system; [Fig. 3] is a creative relay The block diagram of the module; [Fig. 4] The multi-circuit backup communication system of the present invention further includes an embodiment diagram of the database host.

1‧‧‧Multi-circuit backup communication system

10‧‧‧Upstream host

11‧‧‧First Communication埠

20‧‧‧ downstream equipment

21‧‧‧Second Communications埠

30‧‧‧Relay module

31‧‧‧Upstream

32‧‧‧ Downstream

Claims (10)

A multi-loop backup communication system, comprising: two upstream hosts, each of the upstream hosts includes a first communication port; two downstream devices, each of the downstream devices includes a second communication port; and a relay module comprising two uplinks And the second uplink port is connected to the first communication port of the two upstream hosts, and the two downlink ports are respectively connected to the second communication port of the two downstream devices, wherein the two uplink ports are respectively And one of the two downlinks is a preset, and the other uplink and the downlink are backup, and the relay module detects that one of the preset ports fails to communicate. Use the corresponding backup 埠 external communication. The multi-loop backup communication system according to claim 1, wherein the two downstream devices are respectively the other relay modules. The multi-loop backup communication system according to claim 1, wherein the two downstream devices are two-door card-locking devices, two-guarantee sensors, or two home appliances. The multi-loop backup communication system according to claim 1, further comprising another one of the relay modules, wherein the uplink port of one of the two relay modules is connected to one of the two upstream hosts, the second The uplink port of the other of the relay modules is connected to another upstream host, and the downlink port of one of the two relay modules is connected to one of the two downstream devices, the two relays The downlink connection of the other of the modules is connected to another downstream device, wherein one of the two relay modules is preset to be in an active state, and the other of the relay modules is preset to a backup state. . The multi-loop backup communication system according to claim 4, wherein the two downstream devices are respectively the other relay modules. The multi-loop backup communication system according to claim 4, wherein the two downstream devices are a two-door card machine, a second-protection sensor or two home appliances. The multi-loop backup communication system of claim 1, wherein each of the two upstream hosts further comprises a network communication port for exchanging data acquired from the relay module by communicating with each other via a regional network. The multi-loop backup communication system of claim 1, wherein the first communication port and the second communication system support the same communication protocol. The multi-loop backup communication system according to claim 8, wherein the communication protocol supported by the first communication port and the second communication port is a Universal Asynchronous Receiver/Transmitter. The multi-loop backup communication system according to claim 1, wherein the two upstream hosts are digital video recorders (DVRs), network video recorders (NVRs), network type monitoring hosts, personal computers or mobile phones. Communication device.