A communication device and system

Abstract

This application discloses a communication device comprising a first terminal, a second terminal, and a third terminal. The first terminal includes a low-pass filter and is used to connect to a detection device. Data collected by the detection device is transmitted to a communication bus via the low-pass filter. The second terminal and the third terminal are used to connect to the communication bus. Because the first terminal includes a low-pass filter, other data requiring high-speed transmission cannot reach the first terminal, thus preventing leakage of other data requiring high-speed transmission to the first terminal. In this solution, there is no need to add a new communication bus; the communication device can be directly installed on the communication bus, thus preventing data requiring high-speed transmission from being transmitted to the branch where the device collecting data capable of low-speed transmission is located. This simplifies user operation.

Description

Technical Field

[0001] This application relates to the field of communications, and more particularly to a communication device and system. Background Technology

[0002] In some scenarios, there is a need for both high-speed and low-speed data transmission. (See also...) Figure 1 To understand, Figure 1 This is a schematic diagram illustrating an exemplary application scenario. Figure 1 In the scenario shown, multiple detection devices and controllers in the fire protection system communicate via an RS485 bus. The data transmission rate required to send the data collected by the detection devices to the controller does not need to be high. In some scenarios, to obtain real-time information about the area where the detection devices are located, cameras can be installed in that area to capture images and send them to the controller. In this case, a higher data transmission rate is required.

[0003] Currently, if it is necessary to transmit both the aforementioned data that can be transmitted at low speed and the data that requires high speed, it is necessary to... Figure 1 A new communication bus is added to the existing communication bus to transmit the aforementioned data requiring high-speed transmission. The RS485 bus uses copper-core, PVC-insulated, twisted-pair (RVS) wire for power and signal transmission. Therefore, adding a new communication bus means changing the existing RVS twisted-pair cabling deployment: another set of RVS twisted-pair cables needs to be deployed, which is complex.

[0004] Therefore, there is an urgent need for a solution to address the above problems. Summary of the Invention

[0005] This application provides a communication device that can transmit both low-speed and high-speed data without changing the existing RVS twisted-pair cable deployment, and is easy to operate.

[0006] In one aspect, embodiments of this application provide a communication device. In one example, the device includes a first terminal, a second terminal, and a third terminal. The first terminal includes a low-pass filter and is used to connect to a detection device. Data collected by the detection device is transmitted to a communication bus through the low-pass filter. The second terminal and the third terminal are used to connect to the communication bus. Because the first terminal includes a low-pass filter, other data requiring high-speed transmission cannot reach the first terminal, thereby preventing leakage of other data requiring high-speed transmission to the first terminal. In this solution, there is no need to add a new communication bus; the communication device can be directly installed on the communication bus, thus preventing data requiring high-speed transmission from being transmitted to the branch where the device collecting data capable of low-speed transmission is located. This simplifies user operation.

[0007] In one possible implementation, to enable high-frequency and low-frequency signals to be transmitted through the same communication bus, the communication device may further include a fourth terminal, which includes a high-speed transmission module. In one example, data collected by a detection device connected to the fourth terminal can be transmitted to the communication bus through the high-speed transmission module, thereby enabling the transmission of high-frequency data through the communication bus.

[0008] In one possible implementation, the second terminal of the communication device includes a switch and a low-pass filter connected in parallel. If the fourth terminal of the communication device is connected to a detection device, then when the switch included in the second terminal is open, the data collected by the detection device connected to the fourth terminal cannot be transmitted to other nodes on the bus through the second terminal of the communication device.

[0009] In one possible implementation, the third terminal of the communication device includes a switch and a low-pass filter connected in parallel. If the fourth terminal of the communication device is connected to a detection device, then when the switch included in the third terminal is open, the data collected by the detection device connected to the fourth terminal cannot be transmitted to other nodes on the bus through the third terminal of the communication device.

[0010] In one possible implementation, both the second and third terminals of the communication device include parallel switches and low-pass filters. In this case, the transmission path of the data collected by the detection device connected to the fourth terminal can be controlled by controlling the switching states of the second and third terminals.

[0011] In one possible implementation, the high-speed transmission module included at the fourth end of the communication device may be a point-to-point high-speed transmission module, thereby realizing point-to-point high-speed transmission.

[0012] In one possible implementation, the high-speed transmission module may include a switch and a high-speed transceiver module, wherein when the switch is open, other high-frequency signals can be prevented from being transmitted to the fourth terminal, and when the switch is closed, the fourth terminal can be used to transmit (e.g., send or receive) high-frequency data.

[0013] In one possible implementation, considering that broadband power line communication (PLC) technology is a point-to-point high-speed transmission technology, in one example, the high-speed transceiver module can be a transceiver module corresponding to broadband PLC technology. In this case, the point-to-point high-speed transmission module can include a switch and a broadband PLC module.

[0014] In one possible implementation, considering that 10BASE-T1L technology is a point-to-point high-speed transmission technology, the high-speed transceiver module can be a transceiver module corresponding to 10BASE-T1L technology. In this case, the point-to-point high-speed transmission module may include a switch and a 10BASE-T1L module.

[0015] In one possible implementation, considering that the communication bus used by the system currently deployed in the park can be an RS485 bus, the communication bus mentioned here can be an RS485 bus, thus enabling the above communication device to be used in the park.

[0016] Secondly, embodiments of this application provide a communication system, which may include a communication bus, at least one communication device as described in the first aspect or any one of the first aspects, and a detection device connected to the communication device. Using this communication system, both high-frequency and low-frequency data can be transmitted. Furthermore, it avoids transmitting data requiring high-speed transmission to the branch where the device collecting low-speed data is located, simplifying user operation.

[0017] In one possible implementation, one end of the communication bus is connected to a controller, which can receive data sent by other detection devices through the communication bus. The data sent by the other detection devices may include both high-frequency and low-frequency data, allowing the controller to receive both high-frequency and low-frequency data through the communication bus.

[0018] In one possible implementation, if the second or third end of the communication device included in the communication system includes a switch, then the communication system further includes a control device connected to the communication bus for controlling the state of the switch in the communication device, thereby realizing specific point-to-point or point-to-multipoint communication.

[0019] In one possible implementation, the communication system includes a first communication device, the fourth end of which is connected to a first detection device. The first detection device is used to collect data that needs to be transmitted at high speed. The data collected by the first detection device is transmitted to a target device via a first path. In this case, all switches along the first path are in a closed state, thereby enabling the data collected by the first detection device to be transmitted to the target device via the first path.

[0020] In one possible implementation, the target device may be a controller connected to one end of the communication bus, or it may be a device connected to the fourth end of a second communication device on the communication bus.

[0021] In one possible implementation, when the target device is a controller, the data collected by the first detection device is sent to the controller via the second terminal of the first communication device. In this case, the switch at the second terminal of the first communication device is closed, allowing the data collected by the first detection device to be sent to the controller via the second terminal of the first communication device. At this time, the switch included in the third terminal of the first communication device can be in an open state, thereby preventing the data sent by the first detection device from being transmitted to other nodes of the communication bus via the third terminal of the first communication device. This achieves point-to-point high-speed transmission from the first detection device to the target device.

[0022] In one possible implementation, when the target device is a device connected to the fourth terminal of the second communication device, the data collected by the first detection device is transmitted to the device connected to the fourth terminal of the second communication device through the third terminal of the first communication device. In this case, the switch of the third terminal of the first communication device is closed, thereby allowing the data collected by the first detection device to be transmitted to the device connected to the fourth terminal of the second communication device through the third terminal of the first communication device. At this time, the switch included in the second terminal of the first communication device can be in an open state, thereby preventing the data sent by the first detection device from being transmitted to other nodes of the communication bus through the second terminal of the first communication device, thus realizing point-to-point high-speed transmission from the first detection device to the target device.

[0023] In one possible implementation, if the first path further includes at least one third communication device, and the second and / or third end of the third communication device includes a switch, then for the at least one third communication device, if its second end on the first path includes a switch, then the switch at the second end of the at least one third communication device on the first path is in a closed state. Similarly, for the at least one third communication device, if its third end on the first path includes a switch, then the switch at the third end of the at least one third communication device on the first path is in a closed state.

[0024] In one possible implementation, the communication bus is an RS485 bus. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram illustrating an exemplary application scenario;

[0027] Figure 2 This is a schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0028] Figure 3 This is a schematic diagram of the structure of another communication device provided in the embodiments of this application;

[0029] Figure 4 This is a schematic diagram of another communication device provided in an embodiment of this application;

[0030] Figure 5 This application provides a schematic diagram of the structure of a communication system according to an embodiment of the present application.

[0031] Figure 6 This is a schematic diagram of another communication system provided in an embodiment of this application. Detailed Implementation

[0032] This application provides a communication device that can transmit both low-speed and high-speed data without changing the existing RVS twisted-pair cable deployment, and is easy to operate.

[0033] The inventors of this application discovered that if the same communication bus is used to transmit both low-speed and high-speed data, the high-speed data may leak into the branch where the device collecting low-speed data resides, resulting in significant signal loss and affecting the normal transmission of the high-speed data. Therefore, if both low-speed and high-speed data need to be transmitted, two communication buses can be used: one for low-speed data and the other for high-speed data. However, adding a new communication bus complicates operation.

[0034] In view of this, this application provides a communication device, which will now be described in conjunction with the accompanying drawings.

[0035] See Figure 2 The figure is a schematic diagram of the structure of a communication device provided in an embodiment of this application.

[0036] Figure 2 The communication device shown includes a first terminal 210, a second terminal 220, and a third terminal 230.

[0037] The first terminal 210 is used to connect to a detection device. The first terminal 210 includes a low-pass filter 211. Data collected by the detection device connected to the first terminal 210 is transmitted to the communication bus through the low-pass filter 211. The data collected by the detection device connected to the first terminal 210 does not require a high transmission rate, and the data is a low-frequency signal. Since low-frequency signals can pass through the low-pass filter while high-frequency signals cannot, the data collected by the detection device connected to the first terminal 210 can be transmitted to the communication bus through the low-pass filter 211. In one example, the detection device connected to the first terminal 210 may be a smoke detector, a heat detector, a manual alarm button, an access control card reader, or other detection devices.

[0038] The structure of the low-pass filter 211 is not specifically limited in this application embodiment. In one example, the low-pass filter may include a capacitor and / or an inductor.

[0039] The second terminal 220 and the third terminal 230 are used to connect to the communication bus.

[0040] In one example, considering that the communication bus used by the system currently deployed in the park can be an RS485 bus, the communication bus mentioned here can be an RS485 bus, thus enabling the above communication devices to be used in the park.

[0041] Since the first terminal 210 includes a low-pass filter 211, even if the communication bus transmits high-frequency signals (corresponding to data that needs to be transmitted at high speed) in addition to low-frequency signals, the high-frequency signals cannot reach the first terminal 210, thereby preventing the high-frequency signals from leaking to the first terminal 210 and affecting the normal transmission of high-frequency signals.

[0042] In one example, to enable high-frequency and low-frequency signals to be transmitted through the same communication bus, embodiments of this application also provide a communication device, which can be found in [reference needed]. Figure 3 To understand, Figure 3 This is a schematic diagram of another communication device provided in an embodiment of this application.

[0043] Figure 3 The communication device shown, in Figure 2 The communication device shown includes an additional fourth terminal 240, which comprises a high-speed transmission module 241. In one example, the fourth terminal 240 is used to connect to a detection device, and the data collected by this detection device is high-frequency data transmitted via the communication bus. As an example, the fourth terminal 240 can be connected to a camera. In yet another example, the fourth terminal can be used to connect to a monitoring device to receive data collected by other detection devices.

[0044] use Figure 3 The communication device shown can transmit both high-frequency and low-frequency data without changing the overall deployment of the existing communication bus (no new communication bus needs to be added). In one example, for Figure 1 The scenario shown can be applied at nodes without the need to add high-frequency data acquisition equipment. Figure 2 The communication device shown is used at nodes where high-frequency data acquisition equipment needs to be added, and at nodes where data needs to be received from other detection equipment. Figure 3 The communication device shown.

[0045] for Figure 3 The communication device shown can transmit data collected by the detection device to other nodes on the communication bus through the second end of the communication device, or through the third end of the communication device, when the fourth end 240 is connected to the detection device, thereby realizing high-speed point-to-multipoint communication.

[0046] In one example, the high-speed transmission module 241 may include a switch and a high-speed transceiver module, wherein when the switch is open, other high-frequency signals can be prevented from being transmitted to the fourth terminal 240, and when the switch is closed, the fourth terminal 240 can be used to transmit (e.g., send or receive) high-frequency data.

[0047] In one example, considering the high bandwidth requirements of high-speed point-to-multipoint communication, this application also provides a communication device that enables high-speed point-to-point transmission when the bandwidth of the communication bus is insufficient to support high-speed point-to-multipoint transmission. The communication device will now be described in conjunction with the accompanying drawings.

[0048] See Figure 4 , Figure 4 This is a schematic diagram of another communication device provided in an embodiment of this application.

[0049] Figure 4 The communication device shown is Figure 3The difference in the communication device shown lies in the second and / or third ends.

[0050] In one example, the second terminal 220 of the communication device includes a switch k1 and a low-pass filter f1 connected in parallel. It is easy to understand that if the fourth terminal 240 of the communication device is connected to a detection device, then when the switch k1 is open, the data collected by the detection device connected to the fourth terminal 240 cannot be transmitted to other nodes on the bus through the second terminal 220 of the communication device.

[0051] In one example, the third terminal 230 of the communication device includes a switch k2 and a low-pass filter f2 connected in parallel. It is easy to understand that if the fourth terminal 240 of the communication device is connected to a detection device, then when the switch k2 is open, the data collected by the detection device connected to the fourth terminal 240 cannot be transmitted to other nodes on the bus through the third terminal 230 of the communication device.

[0052] In another example, the second terminal 220 of the communication device includes a switch k1 and a low-pass filter f1, and the third terminal 230 of the communication device includes a switch k2 and a low-pass filter f2. In this case, the transmission path of the data collected by the detection device connected to the fourth terminal 240 can be controlled by controlling the states of switches k1 and k2.

[0053] It should be noted that, although in Figure 4 In the communication device, the second terminal 220 includes a switch k1 and a low-pass filter f1, and the third terminal 230 includes a switch k2 and a low-pass filter f2. However, Figure 4 This is shown for ease of understanding only and does not constitute a limitation on the embodiments of this application. In one example, the second terminal 220 of the communication device may include a switch k1 and a low-pass filter f1, while the third terminal 230 of the communication device does not include a switch k2 and a low-pass filter f2; in yet another example, the second terminal 220 of the communication device may not include a switch k1 and a low-pass filter f1, while the third terminal 230 of the communication device includes a switch k2 and a low-pass filter f2.

[0054] In one example Figure 4 The high-speed transmission module 241 shown can be a point-to-point high-speed transmission module, thereby realizing point-to-point high-speed transmission.

[0055] As mentioned above, the high-speed transmission module 241 may include a switch and a high-speed transceiver module. When the switch is open, other high-frequency signals can be prevented from being transmitted to the fourth terminal 240. When the switch is closed, the fourth terminal 240 can be used to transmit (e.g., send or receive) high-frequency data.

[0056] In this embodiment, considering that both broadband PLC technology and 10BASE-T1L technology are point-to-point high-speed transmission technologies, in one example, the high-speed transceiver module can be a transceiver module corresponding to broadband PLC technology. In this case, the point-to-point high-speed transmission module may include a switch and a broadband PLC module. In another example, the high-speed transceiver module can be a transceiver module corresponding to 10BASE-T1L technology. In this case, the point-to-point high-speed transmission module may include a switch and a 10BASE-T1L module.

[0057] Based on the communication devices provided in the above embodiments, this application also provides a communication system. The communication system may include a communication bus, at least one of the communication devices provided in the embodiments, and a detection device connected to the communication devices.

[0058] In one example, the communication bus mentioned here could be an RS485 bus.

[0059] It is not difficult to understand that when the system includes Figure 3 or Figure 4 The communication device shown enables high-frequency and low-frequency signals to be transmitted through the same communication bus. When the system includes... Figure 2 When using the communication device shown, it is possible to avoid the transmission of high-frequency signals to the branch where the detection device corresponding to the acquisition of low-frequency data is located when the high-frequency signal is transmitted on the bus.

[0060] In one example, one end of the communication bus is connected to a controller, which can receive data sent by other detection devices through the communication bus. In another example, the controller can run on a terminal or server in a monitoring room.

[0061] As can be seen above, if the communication system includes Figure 3 or Figure 4 The communication system, as shown in the diagram, further includes a control device connected to the communication bus. This control device controls the state of the switches within the communication device, thereby enabling specific point-to-point or point-to-multipoint communication. This application does not specifically limit the control device; in one example, the control device may be a microcontroller unit (MCU). The control device can receive instructions from a controller and then control the state of the switches within the communication device based on those instructions.

[0062] Regarding the state of the switch in the aforementioned communication device, it should be noted that:

[0063] In some embodiments, the communication system includes a first communication device, the first communication device being... Figure 3 or Figure 4 The communication device is shown. The fourth terminal of the first communication device is connected to a first detection device, which is used to collect data requiring high-speed transmission. For example, the first detection device is a camera used to capture images. The data collected by the first detection device is transmitted to the target device via a first path. The target device mentioned here can be a controller connected to one end of the communication bus, or a device connected to the fourth terminal of a second communication device on the communication bus. In this case, all switches included in the first path are in a closed state, thereby allowing the data collected by the first detection device to be transmitted to the target device via the first path. The switches in the first path include at least the switches included in the fourth terminal of the first communication device.

[0064] In some embodiments, if the first path only includes the switch included at the fourth terminal of the first communication device, then the switch included at the fourth terminal of the first communication device only needs to be in a closed state. For example, the target device is a controller, and the first communication device is... Figure 3 The communication device shown.

[0065] In some embodiments, when the target device is a controller, the data collected by the first detection device is sent to the controller through the second end of the first communication device. In other words, the first communication device communicates with the controller at high speed through its second end. At this time, the second end of the first communication device is located on the first path. In this case, the switch of the second end of the first communication device is closed, thereby allowing the data collected by the first detection device to be sent to the controller through the second end of the first communication device. In one example, the switch included in the third end of the first communication device is in an open state, thereby preventing the data sent by the first detection device from being transmitted to other nodes of the communication bus through the third end of the first communication device, thus achieving point-to-point high-speed transmission from the first detection device to the target device.

[0066] In some embodiments, when the target device is a device connected to the fourth terminal of the second communication device, the data collected by the first detection device is sent to the device connected to the fourth terminal of the second communication device through the third terminal of the first communication device. In other words, the first communication device communicates at high speed with the device connected to the fourth terminal of the second communication device through its third terminal. At this time, the third terminal of the first communication device is located on the first path. In this case, the switch of the third terminal of the first communication device is closed, thereby allowing the data collected by the first detection device to be sent to the device connected to the fourth terminal of the second communication device through the third terminal of the first communication device. In one example, the switch included in the second terminal of the first communication device is in an open state, thereby preventing the data sent by the first detection device from being transmitted to other nodes of the communication bus through the second terminal of the first communication device, thereby realizing point-to-point high-speed transmission from the first detection device to the target device.

[0067] In other embodiments, if the first path further includes at least one third communication device, and the second and / or third end of the third communication device includes a switch, then for the at least one third communication device, if its second end on the first path includes a switch, then the switch at the second end of the at least one third communication device on the first path is in a closed state. Similarly, for the at least one third communication device, if its third end on the first path includes a switch, then the switch at the third end of the at least one third communication device on the first path is in a closed state.

[0068] The communication system mentioned above will now be described in conjunction with the accompanying drawings.

[0069] See Figure 5 The figure is a schematic diagram of the structure of a communication system provided in an embodiment of this application.

[0070] like Figure 5 As shown, the communication system includes a communication bus, a controller 501 connected to one end of the communication bus, communication devices 502, 503, 504, 505, and 506, and detection devices connected to each communication device. Figure 5In the scenario shown: the detection devices connected to communication device 502 include detection device 1 connected to the first end of communication device 502 and a camera connected to the fourth end of communication device 502; the detection devices connected to communication device 503 include detection device 2 connected to the first end of communication device 503 and a camera connected to the fourth end of communication device 503; the detection devices connected to communication device 504 include detection device 3 connected to the first end of communication device 504; the detection devices connected to communication device 505 include detection device 4 connected to the first end of communication device 505 and a monitor connected to the fourth end of communication device 505; the detection devices connected to communication device 506 include detection device n connected to the first end of communication device 506.

[0071] In one example, the first communication device mentioned above can correspond to Figure 5 The communication device 502 or 503 shown, the second communication device can be corresponding to Figure 5 The communication device 505 shown.

[0072] When the first communication device is communication device 502, the second communication device is communication device 505, and the target device is the device connected to the fourth terminal of the second communication device, the third communication device includes: communication device 503 and communication device 504.

[0073] When the first communication device is communication device 503, the second communication device is communication device 505, and the target device is the device connected to the fourth terminal of the second communication device, the third communication device includes: communication device 504.

[0074] When the first communication device is communication device 503 and the target device is controller 501, the third communication device includes: communication device 502.

[0075] In one example, for communication device 502 (first communication device), closing switch k3 allows data captured by the camera connected to the fourth terminal of communication device 502 to be sent to controller 501 (target device). Simultaneously closing switch k9 at the fourth terminal of communication device 505 also allows data captured by the camera connected to the fourth terminal of communication device 502 to be sent to communication device 505 (second communication device), thus achieving point-to-multipoint communication. Of course, switch k9 can also be opened.

[0076] In another example, for communication device 503 (the first communication device), closing switch k6 allows data captured by the camera connected to the fourth terminal of communication device 503 to be sent to controller 501 (the target device). Simultaneously closing switch k9 at the fourth terminal of communication device 505 also allows data captured by the camera connected to the fourth terminal of communication device 503 to be sent to communication device 505 (the second communication device), thus achieving point-to-multipoint communication. Of course, switch k9 can also be opened.

[0077] exist Figure 5 In the scenario shown, regardless of the switch states of each communication device, the data collected by the detection device connected to the first end of each communication device can be transmitted to the communication bus.

[0078] Figure 5 The communication system shown can be applied in scenarios where the communication bus bandwidth is sufficient, enabling high-speed point-to-multipoint transmission.

[0079] Figure 5 and Figure 1 In contrast, the communication device provided in this application embodiment only needs to be installed on the communication bus. Specifically, for nodes with high-speed transmission requirements (e.g., the nodes corresponding to communication devices 502, 503, and 505), it can be installed... Figure 3 The communication devices shown can be installed on nodes that do not require high-speed transmission (such as the nodes corresponding to communication devices 504 and 506). Figure 2 The communication device shown demonstrates that, therefore, both high-frequency and low-frequency signal transmission can be achieved without adding a new communication bus.

[0080] See Figure 6 This figure is a schematic diagram of the structure of another communication system provided in an embodiment of this application.

[0081] like Figure 6 As shown, the communication system includes a communication bus, a controller 601 connected to one end of the communication bus, communication devices 602, 603, 604, 605, and 606, and detection devices connected to each communication device. Figure 6In the scenario shown: the detection devices connected to communication device 602 include detection device 1 connected to the first end of communication device 602 and a camera connected to the fourth end of communication device 602; the detection devices connected to communication device 603 include detection device 2 connected to the first end of communication device 603 and a camera connected to the fourth end of communication device 603; the detection devices connected to communication device 604 include detection device 3 connected to the first end of communication device 604; the detection devices connected to communication device 605 include detection device 4 connected to the first end of communication device 605 and a monitor connected to the fourth end of communication device 605; the detection devices connected to communication device 606 include detection device n connected to the first end of communication device 606.

[0082] In one example, the first communication device mentioned above can correspond to Figure 6 The communication device 602 or 603 shown, the second communication device can be corresponding to Figure 6 The communication device 605 shown.

[0083] When the first communication device is communication device 602, the second communication device is communication device 605, and the target device is the device connected to the fourth terminal of the second communication device, the third communication device includes: communication device 603 and communication device 604.

[0084] When the first communication device is communication device 603, the second communication device is communication device 605, and the target device is the device connected to the fourth end of the second communication device, the third communication device includes: communication device 604.

[0085] When the first communication device is communication device 603 and the target device is controller 601, the third communication device includes: communication device 602.

[0086] If the first communication device is communication device 602 and the target communication device is a controller, the second end of the communication device 602 is an end including switch k1; when the first communication device is 602 and the target communication device is a monitor connected to the fourth end of communication device 605 (the second communication device), the third end of the communication device 602 is an end including switch k2.

[0087] If the fourth terminal of the communication device 602 is connected to a monitor, then in one example, the communication device 602 can function as a second communication device. In this case, if the first communication device is communication device 603, then communication device 603 can communicate at high speed with the controller 601 using one terminal including switch k4, and can also communicate at high speed with the monitor connected to the fourth terminal of communication device 602 using one terminal including switch k4. In this case, both the second and third terminals of communication device 603 include one terminal including switch k4.

[0088] In one example, for communication device 602 (first communication device), if switches k3 and k1 (switches included in the second terminal of communication device 602) are closed, data captured by the camera connected to the fourth terminal of communication device 602 can be sent to controller 601 (target device). At this time, if switch k2 (switches included in the third terminal of communication device 602) is opened, point-to-point communication between the camera connected to the fourth terminal of communication device 602 and controller 601 can be realized.

[0089] In one example, for communication device 602 (first communication device), if data captured by the camera connected to the fourth terminal of communication device 602 is to be sent to the monitor (target device) connected to the fourth terminal of communication device 605 (second communication device), the switches k3, k2 (switches included in the third terminal of communication device 602), k4, k5, k7, and k9 included in the first path (fourth terminal of communication device 602 → third terminal of communication device 602 → second terminal of communication device 603 → third terminal of communication device 603 → second terminal of communication device 604 → third terminal of communication device 604 → second terminal of communication device 605 → fourth terminal of communication device 605) can all be closed. At this time, if switch k1 (switches included in the second terminal of communication device 602) is opened, point-to-point communication between the camera connected to the fourth terminal of communication device 602 and the monitor connected to the fourth terminal of communication device 605 can be realized. Of course, if switch k1 is closed, the data captured by the camera connected to the fourth terminal of communication device 602 can also be sent to controller 601, thereby realizing point-to-multipoint communication.

[0090] exist Figure 6 In the scenario shown, regardless of the switch states of each communication device, the data collected by the detection device connected to the first end of each communication device can be transmitted to the communication bus.

[0091] Figure 6 The communication system shown can be applied to scenarios where the communication bus bandwidth is sufficient to achieve high-speed point-to-multipoint transmission. It can also be applied to scenarios where the communication bus bandwidth is insufficient to support high-speed point-to-multipoint transmission, in order to achieve high-speed point-to-point transmission.

[0092] Figure 6 and Figure 1 In contrast, the communication device provided in this application embodiment only needs to be installed on the communication bus. Specifically, for nodes with high-speed transmission requirements (e.g., the nodes corresponding to communication devices 602, 603, and 605), it can be installed... Figure 4 The communication devices shown can be installed on nodes that do not require high-speed transmission (such as the nodes corresponding to communication devices 604 and 606). Figure 2The communication device shown demonstrates that, therefore, both high-frequency and low-frequency signal transmission can be achieved without adding a new communication bus.

[0093] It should be noted that, Figure 5 and Figure 6 The communication system provided in this application is illustrated for ease of understanding and does not constitute a limitation on the embodiments of this application. In one example, the communication system may also include... Figure 2 The communication device shown also includes Figure 3 The communication device shown and Figure 4 The communication devices shown are not listed and described in detail here. In yet another example, although in Figure 6 In the communication device 602, the device connected to the fourth terminal communicates with the controller at high speed through the terminal including switch k1. However, in practice, the device connected to the fourth terminal of the communication device 602 can also communicate with the controller at high speed through the terminal including switch k2. In this case, Figure 6 In the scenario shown, for communication device 602, its second terminal includes switch k2, and its third terminal includes switch k1. Similarly, for communication device 603, its second terminal includes switch k5, its third terminal includes switch k4, and so on, which will not be listed here.

[0094] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0095] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0096] In the embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical business division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, indirect coupling or communication connection between apparatuses or units, and may be electrical, mechanical, or other forms.

[0097] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0098] Furthermore, the various business units in the embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software business unit.

[0099] If the integrated unit is implemented as a software business unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0100] Those skilled in the art will recognize that, in one or more of the examples above, the services described in this invention can be implemented using hardware, software, firmware, or any combination thereof. When implemented in software, these services can be stored in a computer-readable medium or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any medium that facilitates the transmission of computer programs from one place to another. Storage media can be any available medium accessible to general-purpose or special-purpose computers.

[0101] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above are merely specific embodiments of the present invention.

[0102] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A communication device, characterized in that, The device includes: a first end, a second end, a third end, and a fourth end; The first end includes a low-pass filter, which is used to connect to a detection device. The data collected by the detection device is transmitted to the communication bus through the low-pass filter. The second terminal and the third terminal are used to connect the communication bus. The second terminal includes a switch and a low-pass filter connected in parallel, and the third terminal includes a switch and a low-pass filter connected in parallel. The data collected by the device connected to the fourth terminal is high-frequency data.

2. The communication device according to claim 1, characterized in that, The fourth terminal includes a high-speed transmission module.

3. The apparatus according to claim 2, characterized in that, The high-speed transmission module is a point-to-point high-speed transmission module.

4. The apparatus according to claim 3, characterized in that, The point-to-point high-speed transmission module includes: Switch and broadband power line carrier communication PLC module.

5. The apparatus according to claim 3, characterized in that, The point-to-point high-speed transmission module includes: Switches and 10BASE-T1L modules.

6. The apparatus according to claim 1, 2, 4, or 5, characterized in that, The communication bus is an RS485 bus.

7. The apparatus according to claim 3, characterized in that, The communication bus is an RS485 bus.

8. A communication system, characterized in that, The system includes: A communication bus, at least one communication device according to any one of claims 1-7, and a detection device connected to the communication device.

9. The system according to claim 8, characterized in that, The communication system also includes a controller connected to one end of the communication bus.

10. The system according to claim 8 or 9, characterized in that, The system also includes a control device for controlling the state of the switches included in the communication device.

11. The system according to claim 8 or 9, characterized in that, The system includes a first detection device connected to the fourth terminal of the first communication device. Data collected by the first detection device is transmitted to the target device via a first path. All switches included on the first path are closed. The switches included on the first path include the switches included on the fourth terminal of the first communication device.

12. The system according to claim 10, characterized in that, The system includes a first detection device connected to the fourth terminal of the first communication device. Data collected by the first detection device is transmitted to the target device via a first path. All switches included on the first path are closed. The switches included on the first path include the switches included on the fourth terminal of the first communication device.

13. The system according to claim 11, characterized in that, The target device includes: a device connected to the fourth end of the controller or the second communication device.

14. The system according to claim 13, characterized in that, When the target device is the controller, the first path includes a second end of the first communication device, the second end of the first communication device includes a closed switch, and the third end of the first communication device includes a closed switch.

15. The system according to claim 13, characterized in that, When the target device is a device connected to the fourth end of the second communication device, the first path includes the third end of the first communication device, the third end of the first communication device includes a closed switch, and the second end of the first communication device includes a closed switch.

16. The system according to claim 11, characterized in that, The switches included in the first path also include: The second end of at least one third communication device on the first path includes a switch, and / or the third end of the at least one third communication device includes a switch.

17. The system according to any one of claims 8, 9, or 12-16, characterized in that, The communication bus is an RS485 bus.

18. The system according to claim 10, characterized in that, The communication bus is an RS485 bus.

19. The system according to claim 11, characterized in that, The communication bus is an RS485 bus.

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