A loop redundant big data room channel monitoring device

Abstract

The utility model discloses a loop redundant big data room channel monitoring device. The utility model forms a loop through a first communication interface, a second communication interface, a first RS485 device, a second RS485 device and an RS485 device unit. Even if any one of the first RS485 device, the second RS485 device and the RS485 device unit fails, a data transceiver module can communicate with the remaining RS485 devices in normal operation through the first communication interface or the second communication interface, thereby realizing communication loop redundancy and improving reliability.

Description

Technical Field

[0001] The utility model relates to the field of electronic circuits, in particular to a loop redundant big data computer room channel monitoring device. Background Art

[0002] At present, there are two types of channel monitoring hosts in big data computer rooms. One is an industrial all-in-one machine based on Intel X86 CPU, running Windows or Linux system; the other is a low-power edge computing host based on high-performance ARM CPU, running Linux or Android system. This low-power edge computing host based on high-performance ARM CPU has a communication interface. Usually the first external RS485 device is connected to the communication interface, and then the remaining external RS485 devices are connected in sequence, which is equivalent to connecting each external RS485 device to one line. If any external RS485 device fails, all external RS485 devices behind the external RS485 device will not be able to communicate with the channel monitoring host, and the reliability is poor. Utility Model Content

[0003] The embodiment of the present application provides a loop redundant big data room channel monitoring device to solve at least one problem existing in the related art. The technical solution is as follows:

[0004] In a first aspect, an embodiment of the present application provides a loop redundant big data room channel monitoring device, comprising:

[0005] A channel monitoring host comprises a data transceiver module, a first communication interface and a second communication interface, wherein the data transceiver module is connected to the first communication interface and the second communication interface;

[0006] The device module comprises a first RS485 device, a second RS485 device and an RS485 device unit, wherein a first RS485 interface of the first RS485 device is connected with the first communication interface, a first RS485 interface of the second RS485 device is connected with the second communication interface, a second RS485 interface of the first RS485 device is connected with the RS485 device unit, and a second RS485 interface of the second RS485 device is connected with the RS485 device unit; wherein the RS485 device unit comprises at least one RS485 device.

[0007] In one implementation, the data transceiver module includes a main control chip and an automatic data transceiver circuit, and the automatic data transceiver circuit is connected to the first communication interface, the second communication interface, and the main control chip.

[0008] In one embodiment, the automatic data transceiver circuit includes a first transceiver branch, a second transceiver branch and a connecting chip, the first transceiver branch and the second transceiver branch are both connected to the connecting chip, the connecting chip is connected to the receiving pin of the main control chip, the first transceiver branch is connected to the sending pin of the main control chip and the first communication interface, and the second transceiver branch is connected to the sending pin of the main control chip and the second communication interface.

[0009] In one embodiment, the first transceiver branch includes a first 485 chip, a first transistor, a first resistor and a second resistor; one end of the first resistor is connected to the sending pin of the main control chip, the other end of the first resistor is connected to the base of the first transistor, the collector of the first transistor is connected to one end of the second resistor and the 2nd and 3rd pins of the first 485 chip, the other end of the second resistor is connected to the power supply and the 1st pin of the first 485 chip, the emitter of the first transistor is connected to the 4th and 5th pins of the first 485 chip and to ground, the 8th pin of the first 485 chip is connected to the power supply, and the 6th and 7th pins of the first 485 chip are respectively connected to different pins of the first communication interface.

[0010] In one embodiment, the first transceiver branch also includes a third resistor, a fourth resistor, a fifth resistor and a first capacitor; the first pin of the first 485 chip is connected to the power supply through the third resistor, the seventh pin of the first 485 chip is grounded through the fourth resistor, one end of the first capacitor is grounded, the other end of the first capacitor is connected to the power supply, and the sixth pin of the first 485 chip is connected to the power supply through the fifth resistor.

[0011] In one implementation, the first transceiver branch further includes a first TVS tube unit, and the first TVS tube unit is connected to pins 6 and 7 of the first 485 chip.

[0012] In one embodiment, the first transceiver branch also includes a first resettable fuse and a second resettable fuse; the first resettable fuse is connected to the 7th pin of the first 485 chip and the 4th pin of the first communication interface, and the second resettable fuse is connected to the 6th pin of the first 485 chip and the 5th pin of the first communication interface.

[0013] In one embodiment, the first transceiver branch also includes a first gas discharge tube and a second gas discharge tube; the first gas discharge tube is connected to the 6th pin of the first 485 chip and the 5th pin of the first communication interface, and the second gas discharge tube is connected to the 7th pin of the first 485 chip and the 4th pin of the first communication interface.

[0014] In one implementation, the first communication interface and the second communication interface both include a power pin, the power pin of the first communication interface is used to power the first RS485 device, and the power pin of the second communication interface is used to power the second RS485 device.

[0015] In one implementation, the power pins include pins 1, 2, 3, 6, 7, and 8, wherein pins 1, 2, and 3 are grounded, and pins 6, 7, and 8 are connected to a power source.

[0016] The beneficial effects of the above technical solution include at least:

[0017] A channel monitoring host is provided with a data transceiver module, a first communication interface and a second communication interface, wherein the data transceiver module is connected to the first communication interface and the second communication interface, and the device module includes a first RS485 device, a second RS485 device and an RS485 device unit, wherein the first RS485 interface of the first RS485 device is connected to the first communication interface, the first RS485 interface of the second RS485 device is connected to the second communication interface, the second RS485 interface of the first RS485 device is connected to the RS485 device unit, and the second RS485 interface of the second RS485 device is connected to the RS485 device unit. 5 interface is connected to the RS485 device unit; wherein the RS485 device unit includes at least one RS485 device, and a loop is formed through the first communication interface, the second communication interface, the first RS485 device, the second RS485 device and the RS485 device unit. Even if any one of the first RS485 device, the second RS485 device and the RS485 device of the RS485 device unit fails, the data transceiver module can communicate with the remaining RS485 devices in normal operation through the first communication interface or the second communication interface, thereby achieving communication loop redundancy and improving reliability.

[0018] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present application will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0020] Figure 1 A schematic diagram of a big data room channel monitoring device with loop redundancy according to an embodiment of the present application;

[0021] Figure 2 This is a partial schematic diagram of the data transceiver module of an embodiment of the present application. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0023] The terms "first", "second", "third", etc. in the specification and claims of this application and the drawings are only used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. Reference to "embodiments" herein means that the specific features, structures or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0024] The utility model is further explained and illustrated below in conjunction with the accompanying drawings and specific embodiments of the specification.

[0025] In the related art, in addition to the problem of poor reliability, there is no automatic communication function, and it is also impossible to power external RS485 devices, and the applicability is poor.

[0026] Reference Figure 1 as well as Figure 2 , an embodiment of the present application provides a loop redundant big data computer room channel monitoring device, including a channel monitoring host and a device module.

[0027] In the embodiment of the present application, the channel monitoring host includes a data transceiver module, a first communication interface RS485-1 and a second communication interface RS485-2, and the data transceiver module is connected to the first communication interface RS485-1 and the second communication interface RS485-2. Among them, the channel monitoring host is connected to a power module, and the power module is used to provide power such as VCC and 12V.

[0028] like Figure 1As shown, in the embodiment of the present application, the device module includes a first RS485 device (ie, RS485 device 1), a second RS485 device (ie, RS485 device 5) and an RS485 device unit, and a first RS485 interface ( Figure 1 The left RJ45 interface in the middle) is connected to the first communication interface RS485-1, and the first RS485 interface of the second RS485 device ( Figure 1 The left RJ45 interface in the middle) is connected to the second communication interface RS485-2, and the second RS485 interface of the first RS485 device ( Figure 1 The RJ45 interface on the right side of the middle) is connected to the RS485 device unit, and the second RS485 interface of the second RS485 device ( Figure 1 It should be noted that the RS485 interface on the RS485 device is an RJ45 interface, and different RS485 devices are connected to the corresponding RJ45 interfaces using a network cable; wherein the RS485 device unit includes at least one RS485 device, and the embodiment of the present application takes the RS485 device unit including three RS485 devices as an example, specifically Figure 1 RS485 device 2, RS485 device 3, RS485 device 4. At this time, the second RS485 interface of the first RS485 device is connected to the first RS485 interface of RS485 device 2, the second RS485 interface of RS485 device 2 is connected to the first RS485 interface of RS485 device 3, the second RS485 interface of RS485 device 3 is connected to the second RS485 interface of RS485 device 4, and the first RS485 interface of RS485 device 4 is connected to the second RS485 interface of the second RS485 device.

[0029] It should be noted that, in other embodiments, the RS485 device unit may also include one, two or more RS485 devices, without specific limitation. For example, it may include one RS485 device, such as RS485 device 2. In this case, the second RS485 interface of the first RS485 device is connected to the first RS485 interface of RS485 device 2, and the second RS485 interface of RS485 device 2 is connected to the second RS485 interface of the second RS485 device. In the embodiment of the present application, it is ensured that the channel monitoring host, the first RS485 device, the second RS485 device and the RS485 devices in the RS485 device unit are connected hand in hand (daisy chain) to form a ring connection link.

[0030] like Figure 2As shown, in the embodiment of the present application, the data transceiver module includes a main control chip (not shown) and an automatic data transceiver circuit, and the automatic data transceiver circuit is connected to the first communication interface RS485-1, the second communication interface RS485-2 and the main control chip.

[0031] like Figure 2 As shown, optionally, the data automatic transceiver circuit includes a first transceiver branch, a second transceiver branch and a connecting chip D1, the first transceiver branch and the second transceiver branch are both connected to the connecting chip D1, the connecting chip D1 is connected to the receiving pin UART0 RX of the main control chip, the first transceiver branch is connected to the sending pin UART0 TX of the main control chip and the first communication interface RS485-1, and the second transceiver branch is connected to the sending pin UART0 TX of the main control chip and the second communication interface RS485-2.

[0032] like Figure 2 As shown, in the embodiment of the present application, the first transceiver branch includes a first 485 chip U1, a first transistor Q1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first capacitor C1, a first TVS tube unit, a first resettable fuse F1, a second resettable fuse F2, a first gas discharge tube G1 and a second gas discharge tube G2.

[0033] like Figure 2 As shown, optionally, one end of the first resistor R1 is connected to the sending pin UART0 TX of the main control chip, the other end of the first resistor R1 is connected to the base of the first transistor Q1, the collector of the first transistor Q1 is connected to one end of the second resistor R2 and the 2nd and 3rd pins of the first 485 chip U1, the other end of the second resistor R2 is connected to the power supply and the 1st pin of the first 485 chip U1, the emitter of the first transistor Q1 is connected to the 4th and 5th pins of the first 485 chip U1 and grounded, the 8th pin of the first 485 chip U1 is connected to the power supply, and the 6th and 7th pins of the first 485 chip U1 are respectively connected to different pins of the first communication interface RS485-1.

[0034] like Figure 2 As shown, optionally, the 1st pin of the first 485 chip U1 is connected to the power supply through the third resistor R3, the 7th pin of the first 485 chip U1 is grounded through the fourth resistor R4 and connected to one end of the first capacitor C1, the other end of the first capacitor C1 is connected to the power supply, and the 6th pin of the first 485 chip U1 is connected to the power supply through the fifth resistor R5.

[0035] like Figure 2As shown, optionally, the first TVS tube unit is connected to the 6th and 7th pins of the first 485 chip U1. Specifically, the first TVS tube unit includes a first TVS tube T1, a second TVS tube T2 and a third TVS tube T3. One end of the first TVS tube T1 is connected to the 6th pin of the first 485 chip U1 and one end of the third TVS tube T3, and the other end is connected to one end of the second TVS tube T2 and grounded. The other end of the second TVS tube T2 is connected to the other end of the third TVS tube T3 and connected to the 7th pin of the first 485 chip U1.

[0036] like Figure 2 As shown, optionally, the first resettable fuse F1 is connected to the 7th pin of the first 485 chip U1 and the 4th pin of the first communication interface RS485-1, and the second resettable fuse F2 is connected to the 6th pin of the first 485 chip U1 and the 5th pin of the first communication interface RS485-1; the first gas discharge tube G1 is connected to the 6th pin of the first 485 chip U1 and the 5th pin of the first communication interface RS485-1, and the second gas discharge tube G2 is connected to the 7th pin of the first 485 chip U1 and the 4th pin of the first communication interface RS485-1.

[0037] like Figure 2 As shown, optionally, the connection chip D1 is a high-speed Schottky diode, model BAT54A, the first pin of the first 485 chip U1 is connected to the first pin of the connection chip D1, and the third pin of the connection chip D1 is connected to the receiving pin UART0 RX of the main control chip. In the embodiment of the present application, using the connection chip D1, only one physical serial port of the main control chip is needed to expand two RS485s.

[0038] like Figure 2 As shown, in the embodiment of the present application, the second transceiver branch includes a second 485 chip U2, a second triode Q2, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, a second capacitor C2, a second TVS tube unit (including a fourth TVS tube T4, a fifth TVS tube T5 and a sixth TVS tube T6), a third self-recovery fuse F3, a fourth self-recovery fuse F4, a third gas discharge tube G3 and a fourth gas discharge tube G4, and the connection method thereof is as follows Figure 2 As shown, the connection method and principle are similar to those of the first transceiver branch and will not be repeated here.

[0039] like Figure 2As shown, in the embodiment of the present application, the first communication interface RS485-1 and the second communication interface RS485-2 both include power pins, the power pins of the first communication interface RS485-1 are used to power the first RS485 device, the power pins of the second communication interface RS485-2 are used to power the second RS485 device, and the first RS485 device, the second RS485 device and the RS485 device of the RS485 device unit are connected to indirectly power the RS485 device of the RS485 device unit.

[0040] like Figure 2 As shown, optionally, the power pins include the 1st, 2nd, 3rd, 6th, 7th, and 8th pins, the 1st, 2nd, and 3rd pins are grounded, and the 6th, 7th, and 8th pins are connected to the power supply. For example, in the first communication interface RS485-1, the 1st, 2nd, and 3rd pins correspond to the A1, A2, and A3 pins, the A1, A2, and A3 pins are grounded GND, which is the power ground, and the 6th, 7th, and 8th pins correspond to the A6, A7, and A8 pins, which are connected to a 12V power supply; in the second communication interface RS485-2, the 1st, 2nd, and 3rd pins correspond to the B1, B2, and B3 pins, the B1, B2, and B3 pins are grounded GND, which is the power ground, and the 6th, 7th, and 8th pins correspond to the B6, B7, and B8 pins, which are connected to a 12V power supply.

[0041] The specific working process of the embodiment of the present application is described below. The first transceiver branch and the second transceiver branch have the same principle. The automatic transceiver conversion of RS485 communication is realized by adding Q1 and Q2:

[0042] When receiving, the sending pin UART0 TX of the physical serial port of the main control chip is high, the first transistor Q1 and the second transistor Q2 are turned on, the 2nd and 3rd pins of the first 485 chip U1 and the second 485 chip U2 are pulled down to a low level, and the RS485 bus (i.e., the line where the 6th and 7th pins of the first 485 chip U1 and the second 485 chip U2 are located) is in a receiving state, and the RS485 bus information received by the 6th and 7th pins of the first 485 chip U1 and the second 485 chip U2 is output through the receiving pin 1 of the first 485 chip U1 and the second 485 chip U2, and is connected to the chip D1 and transmitted to the receiving pin UART0 RX of the physical serial port of the main control chip. It should be noted that because RS485 is half-duplex communication, only one device sends information to the main control chip at the same time. Therefore, the information received by RS485 is transmitted through the receiving pin RO of the first 485 chip U1 or the second 485 chip U2, and then time-division multiplexed to UART0_RX of the main control chip through D1.

[0043] When sending, the start bit of the sent data is low level, the sending pin UART0TX of the physical serial port of the main control chip is low level, the first transistor Q1 and the second transistor Q2 are turned off, the transceiver control pins 2 and 3 of the first 485 chip U1 and the second 485 chip U2 are pulled high by the second resistor R2 and the seventh resistor R7, and the RS485 bus enters the sending state, the sending pin 4 DI of the first 485 chip U1 and the second 485 chip U2 is grounded, sending a low level, the RS485 bus outputs 0, and the sending data 0 is as described above; when sending data 1, the sending pin UART0 of the physical serial port of the main control chip is TX is high level, the first transistor Q1 and the second transistor Q2 are turned on, the transceiver control pins 2 and 3 of the first 485 chip U1 and the second 485 chip U2 are pulled down to a low level, and the output pins 6 and 7 of the first 485 chip U1 and the second 485 chip U2 are in a high impedance state in the sending state, the 6th pin A of the first 485 chip U1 and the second 485 chip U2 are pulled up to a high level by R5 and R10, and the 7th pin B of the first 485 chip U1 and the second 485 chip U2 are pulled down to a level by R4 and R9, so that the RS485 bus outputs 1.

[0044] For example, Figure 1 As shown, assuming that the network cable between RS485 device 2 and RS485 device 3 is disconnected, RS485 device 1 and RS485 device 2 can communicate with the first communication interface RS485-1 of the channel monitoring host, and RS485 device 3, RS485 device 4, and RS485 device 5 can communicate with the second communication interface RS485-2 of the channel monitoring host without affecting the communication of each RS485 device.

[0045] For another example, if RS485 device 3 fails, RS485 device 1 and RS485 device 2 can communicate with the first communication interface RS485-1 of the channel monitoring host, and RS485 device 4 and RS485 device 5 can communicate with the second communication interface RS485-2 of the channel monitoring host without affecting the communication. The loop redundancy circuit realized by a single physical serial port greatly improves the RS485 communication reliability of the channel monitoring host, optimizes the wiring, and is suitable for big data computer room applications.

[0046] In the embodiment of the present application, a ring-shaped hand-in-hand connection link is used to form RS485 communication loop redundancy. If any RS485 device in the loop fails or the communication cable is accidentally disconnected, the communication of other RS485 devices will not be affected, which greatly enhances the communication reliability between the channel monitoring host and the RS485 device. At the same time, multiple RS485 devices can be connected by only using the first communication interface RS485-1 and the second communication interface RS485-2 of the channel monitoring host, which can greatly save the limited interface resources on the channel monitoring host.

[0047] In the embodiment of the present application, only one transistor needs to be added to the first transceiver branch and the second transceiver branch respectively to realize the automatic transceiver communication of RS485, and there is no need for the underlying driver to control the reception and transmission. In the low-power edge computing channel monitoring host based on the high-performance ARMCPU, good results can be achieved, and the conventional RS485 communication must separately control the transceiver direction control pin, thereby improving the utilization rate of the pin resources of the main control chip, eliminating the need for the writing and debugging of the Linux underlying driver, and avoiding the problem of poor real-time performance of the Linux control.

[0048] By setting the first TVS tube unit and the second TVS tube unit, it is helpful to protect the RS485 bus from overvoltage; by setting the first self-resettable fuse F1, the second self-resettable fuse F2, the third self-resettable fuse F3, and the fourth self-resettable fuse F4, it is helpful to protect the RS485 bus from overcurrent; by setting the first gas discharge tube G1, the second gas discharge tube G2, the third gas discharge tube G3, and the fourth gas discharge tube G4, the RS485 bus is protected from lightning strikes.

[0049] In an embodiment of the present application, the first communication interface RS485-1 and the second communication interface RS485-2 are provided with connection pins of the RS485 bus and power supply pins. The first RS485 device, the second RS485 device and other RS485 devices of the RS485 device unit can work by connecting through a network cable, which greatly optimizes the equipment wiring and PDU power socket utilization in the big data computer room.

[0050] The above is a specific description of the preferred implementation of the utility model, but the utility model is not limited to the implementation method. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the utility model. These equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A loop redundant big data room channel monitoring device, characterized in that: include: A channel monitoring host comprises a data transceiver module, a first communication interface and a second communication interface, wherein the data transceiver module is connected to the first communication interface and the second communication interface; The device module comprises a first RS485 device, a second RS485 device and an RS485 device unit, wherein a first RS485 interface of the first RS485 device is connected with the first communication interface, a first RS485 interface of the second RS485 device is connected with the second communication interface, a second RS485 interface of the first RS485 device is connected with the RS485 device unit, and a second RS485 interface of the second RS485 device is connected with the RS485 device unit; wherein the RS485 device unit comprises at least one RS485 device.

2. The loop redundant big data room channel monitoring device according to claim 1, characterized in that: The data transceiver module includes a main control chip and an automatic data transceiver circuit, and the automatic data transceiver circuit is connected to the first communication interface, the second communication interface and the main control chip.

3. The loop redundant big data room channel monitoring device according to claim 2 is characterized in that: The automatic data transceiver circuit includes a first transceiver branch, a second transceiver branch and a connecting chip, the first transceiver branch and the second transceiver branch are both connected to the connecting chip, the connecting chip is connected to the receiving pin of the main control chip, the first transceiver branch is connected to the sending pin of the main control chip and the first communication interface, and the second transceiver branch is connected to the sending pin of the main control chip and the second communication interface.

4. The loop redundant big data room channel monitoring device according to claim 3 is characterized in that: The first transceiver branch includes a first 485 chip, a first transistor, a first resistor and a second resistor; one end of the first resistor is connected to the sending pin of the main control chip, the other end of the first resistor is connected to the base of the first transistor, the collector of the first transistor is connected to one end of the second resistor and the 2nd and 3rd pins of the first 485 chip, the other end of the second resistor is connected to the power supply and the 1st pin of the first 485 chip, the emitter of the first transistor is connected to the 4th and 5th pins of the first 485 chip and to ground, the 8th pin of the first 485 chip is connected to the power supply, and the 6th and 7th pins of the first 485 chip are respectively connected to different pins of the first communication interface.

5. The loop redundant big data room channel monitoring device according to claim 4, characterized in that: The first transceiver branch also includes a third resistor, a fourth resistor, a fifth resistor and a first capacitor; the first pin of the first 485 chip is connected to the power supply through the third resistor, the seventh pin of the first 485 chip is grounded through the fourth resistor, one end of the first capacitor is grounded, the other end of the first capacitor is connected to the power supply, and the sixth pin of the first 485 chip is connected to the power supply through the fifth resistor.

6. The loop redundant big data room channel monitoring device according to claim 4, characterized in that: The first transceiver branch also includes a first TVS tube unit, and the first TVS tube unit is connected to the 6th and 7th pins of the first 485 chip.

7. The loop redundant big data room channel monitoring device according to claim 4, characterized in that: The first transceiver branch also includes a first resettable fuse and a second resettable fuse; the first resettable fuse is connected to the 7th pin of the first 485 chip and the 4th pin of the first communication interface, and the second resettable fuse is connected to the 6th pin of the first 485 chip and the 5th pin of the first communication interface.

8. The loop redundant big data room channel monitoring device according to claim 4, characterized in that: The first transceiver branch also includes a first gas discharge tube and a second gas discharge tube; the first gas discharge tube is connected to the 6th pin of the first 485 chip and the 5th pin of the first communication interface, and the second gas discharge tube is connected to the 7th pin of the first 485 chip and the 4th pin of the first communication interface.

9. The loop redundant big data computer room channel monitoring device according to any one of claims 1 to 8, characterized in that: The first communication interface and the second communication interface both include a power pin, the power pin of the first communication interface is used to power the first RS485 device, and the power pin of the second communication interface is used to power the second RS485 device.

10. The loop redundant big data room channel monitoring device according to claim 9, characterized in that: The power pins include pins 1, 2, 3, 6, 7, and 8. Pins 1, 2, and 3 are grounded, and pins 6, 7, and 8 are connected to the power supply.

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