Wired network networking architecture and wired sensor network

Abstract

The utility model discloses a wired network networking architecture and a wired sensor network, relates to the technical field of wired network networking, solves the problems of limited capacity, complex architecture and the like of the existing large-scale wired sensor network, and adopts the technical scheme that the wired network networking architecture comprises a collector, a multi-core cable and a plurality of branch controllers; the collector is connected with a plurality of branch controllers through a multi-core cable, and one branch controller is connected with one sub-network; the multi-core cable comprises s signal lines and m controlled power lines, the signal lines are connected with the sub-network through the branch controller, the controlled power lines are connected with the power end of the branch controller, and the branch controller is used for connecting the sub-network with the signal lines according to the control voltage of the controlled power lines; any two controlled power lines are connected with 2s at most, namely s pairs of branch controllers, and each pair of branch controllers is connected with the sub-networks and the signal lines through control voltages with opposite polarities. The problem is solved by constructing an independent sub-network and designing a unique architecture connection mode.

Description

TECHNICAL FIELD

[0001] The utility model relates to wired network networking technical field more specifically, it relates to a wired network networking architecture and wired sensor network. BACKGROUND

[0002] Digital sensor integrates sensor, signal processing and conversion, ID, communication protocol, configurable register etc. Digital sensor can be identified and controlled through ID instruction. Usually, the ID of each digital sensor is unique, so multiple digital sensors of the same type can share a channel and can be connected through a set of power lines and signal lines to form a digital sensor network. In the deployment process of the digital sensor network, the identification problem of the sensor can be solved through the unique ID of the digital sensor, and the actual position matching problem of the sensor can be solved by writing the corresponding spatial position number into the configurable register of the digital sensor.

[0003] The above-mentioned digital sensor can share a channel to form a digital sensor network, but has the following major defects: 1. Due to the sharing of signal lines and power supply, the driving capacity of the network is limited, which limits the load capacity. 2. The damage of one sensor may cause all sensors on the entire network to malfunction, i.e. "one point affects a large area". 3. In the case of a malfunctioning sensor causing the entire sensor network to malfunction, the troubleshooting of the malfunctioning sensor is complex and difficult. 4. Due to excessive cables, the network has poor anti-interference ability and weak anti-lightning surge ability, and the sensors are prone to damage. 5. Due to the sharing of a channel, the sensors need to be numbered twice (the initial numbering of the sensors by the packaging factory based on specific rules is called primary numbering, and the re-numbering by the application vendor is called secondary numbering). 6. Each sensor in the sensor network has a different number, and cannot be used interchangeably without numbering.

[0004] In actual use, for situations involving large-scale sensors, there are generally two types of solutions for the topology structure between the collector and the sensor: 1. Branch topology structure: multiple branches are constructed in the wiring network, and a driver is added to each branch to cooperate with a strong driving capacity of the collection channel to achieve the increase of system capacity. However, this structure still has the problem of "one point affecting a large area", and the driver itself may also become a fault point, causing the entire sensor network to malfunction. 2. Multiple collection channels: multiple collection channels are used on the collector to divide the collection system into multiple sensor sub-networks. However, the system capacity of this method depends on the number of channels of the collector and the driving capacity of each channel. If the number of channels of the collector is too large, the number of collectors and buses will also increase, resulting in increased cost and complex construction; if the number of channels is reduced, the influence range of each channel is still large, making fault troubleshooting difficult and the anti-lightning surge ability weak.

[0005] Regardless of the approach chosen, all require secondary numbering of sensors, increasing the complexity of system implementation and maintenance. Furthermore, each network can only connect sensors of the same family type; different channels need to be built for sensors from different families, or even different sensors from the same family, making mixed networking impossible. Therefore, when dealing with multiple types of sensor subnetworks, the system's complexity and cost are both high.

[0006] Therefore, this application provides a wired network architecture and a digital wired sensor network to solve the above problems. Utility Model Content

[0007] The purpose of this application is to provide a wired network architecture and a digital wired sensor network to solve the problems of limited capacity, complex architecture, difficult implementation and maintenance, and weak anti-interference capability of existing large-scale wired sensor networks. By constructing independent sub-networks and designing special networking architectures, as many sub-networks as possible can be connected with fewer core wires, thereby expanding capacity, simplifying architecture, reducing implementation and maintenance difficulty, and enhancing network anti-interference capability.

[0008] This application first provides a wired network architecture, including: a data collector, a multi-core cable, and multiple branch controllers; the data collector is connected to the multiple branch controllers through the multi-core cable, and each branch controller is connected to the access of a sub-network; the multi-core cable includes s signal lines and m controlled power lines. , The signal line is connected to the sub-network via the branch controller, and the controlled power line is connected to the branch controller. The branch controller is used to connect the sub-network to the signal line according to the control voltage of the controlled power line. At most 2s branch controllers are directly connected between any two controlled power lines. These 2s branch controllers are paired up, and each pair of branch controllers is connected to the data acquisition unit via s signal lines. Each pair of branch controllers connects the sub-network to the signal line via a control voltage of opposite polarity. The multi-core cable connects at most... Each branch controller is connected. Sub-network.

[0009] In one possible implementation, the data collector includes a control circuit and a controlled switching switch. The control circuit is connected to the control terminal of the controlled switching switch. Each controlled switching switch is used to connect to the controlled power line according to the signal from the control circuit, either to power, ground, or an intermediate position, so that each controlled power line has three states: connected to power, connected to ground, or in an intermediate state.

[0010] In a possible implementation, the collector further comprises a signal channel switching control circuit, a parasitic power supply sensor acquisition circuit, and / or a digital sensor acquisition circuit, and / or a bus subsystem processing circuit, and the parasitic power supply sensor acquisition circuit, the digital sensor acquisition circuit, and the bus subsystem processing circuit are connected to corresponding signal lines through the signal channel switching control circuit.

[0011] In a possible implementation, the branch controller comprises a unidirectional controlled on element connected to two controlled power supply lines, and a controlled path of the unidirectional controlled on element is connected to the sub-network at one end and to the signal line at the other end, and the unidirectional controlled on element is configured to turn on the controlled path when a control voltage with a correct polarity is provided on the controlled power supply lines.

[0012] In a possible implementation, the branch controller comprises a unidirectional on element and a controlled on element, and the control ends of the unidirectional on element and the controlled on element are connected in series between two controlled power supply lines, and a controlled path of the controlled on element is connected to the sub-network at one end and to the signal line at the other end, and the controlled on element is configured to turn on the controlled path when a control voltage with a correct polarity is provided on the controlled power supply lines.

[0013] In a possible implementation, the branch controller adopts a controlled on element of mechanical contact.

[0014] In a possible implementation, the sub-network comprises a parasitic power supply sensor sub-network and / or a digital sensor sub-network and / or a bus-type circuit subsystem sub-network.

[0015] In a possible implementation, the sub-network comprises one or more sub-network signal lines connected to signal ends of a plurality of parasitic power supply sensors or digital sensors or bus-type circuit subsystems.

[0016] In a possible implementation, when the collector provides a multiplexed power supply, the controlled power supply line supplies power to the sub-network connected to the branch controller, and when the collector provides an independent power supply, the multi-core cable further comprises a power supply line to supply power to the sub-network connected to the branch controller.

[0017] The application further provides a wired sensor network adopting the wired network networking architecture as described above, wherein the collector comprises a parasitic power supply sensor acquisition circuit and a digital sensor acquisition circuit, and the sub-network comprises a parasitic power supply sensor sub-network and a digital sensor sub-network.

[0018] Compared with the prior art, the application has the following beneficial effects: the wired sensor network is divided into multiple independent sub-networks, multiple completely independent sub-networks are connected through a small amount of cables, the number of sub-networks is determined by a formula , wherein s is the number of signal lines and m is the number of controlled power lines; the design allows complete isolation between the sub-networks, first, increases the system capacity and enhances the anti-interference and lightning surge resistance; second, allows the number to be repeated, avoids on-site secondary numbering, simplifies the construction and maintenance work, and improves the universality of the sensor; third, the failure of a single sub-network will not cause the entire system to be paralyzed, simplifies the troubleshooting, and reduces the maintenance cost; fourth, the sub-network supports the coexistence of normal power supply and parasitic power supply sensor networks; fifth, the sub-network supports the coexistence of different types of digital sensors, and enhances the compatibility of the system; the utility model discloses a one-way conduction branch controller is arranged, realizes the multiplication of the sub-network, through the time-sharing multiplexing of the signal line and the controlled power line, reduces the number requirement of the acquisition channel of the acquisition unit. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and do not limit the present application. In the drawings:

[0020] Figure 1 A schematic diagram of a wired network networking architecture provided for the embodiments of the present application is shown in the figure.

[0021] Figure 2 A schematic diagram of a wired sensor network provided for the embodiments of the present application is shown in the figure. DETAILED DESCRIPTION

[0022] Hereinafter, the term "include" or "may include" used in various embodiments of the present application indicates the existence of the claimed function, operation, or element, and does not limit one or more functions, operations, or elements from being added. In addition, as used in various embodiments of the present application, the terms "include", "have", and their derivatives merely indicate the presence of a specific feature, number, step, operation, element, component, or combination thereof, and should not be understood as excluding the possibility of the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof.

[0023] In various embodiments of the present application, the expression "or" or "at least one of B or / and C" includes any combination of the listed terms or all combinations thereof. For example, the expression "B or C" or "at least one of B or / and C" can include B, can include C, or can include both B and C.

[0024] It should be noted that if a description refers to "connecting" a component to another component or "connecting" it to another component, then the first component can be directly connected to the second component, and a third component can be "connected" between the first and second components. Conversely, when a component is "directly connected" to another component or "directly connected" to another component, it can be understood that there is no third component between the first and second components.

[0025] The terminology used in the various embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the various embodiments of this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of this application pertain. The terms (such as those defined in a generally used dictionary) are to be interpreted as having the same meaning as in the context of the relevant technical field and are not to be interpreted as having an idealized or overly formal meaning, unless clearly defined in the various embodiments of this application.

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this application are only for explaining this application and are not intended to limit this application.

[0027] Please see Figure 1 As shown, Figure 1 This is a schematic diagram of a wired network architecture provided in an embodiment of this application. The wired network architecture includes: a data collector, a multi-core cable, and multiple branch controllers; the data collector is connected to the multiple branch controllers via the multi-core cable, and each branch controller is connected to a sub-network; the multi-core cable includes s signal lines and m controlled power lines. , The signal line is connected to the sub-network via the branch controller, and the controlled power line is connected to the branch controller. The branch controller is used to connect the sub-network to the signal line according to the control voltage of the controlled power line. At most 2s branch controllers are directly connected between any two controlled power lines. These 2s branch controllers are paired up, and each pair of branch controllers is connected to the data acquisition unit via s signal lines. Each pair of branch controllers connects the sub-network to the signal line via a control voltage of opposite polarity. The multi-core cable connects at most... Each branch controller is connected. Sub-network.

[0028] Specifically, by the collector, the multi-core cable and the plurality of branch controllers, an architecture containing a plurality of sub-networks is constructed. The cores inside the multi-core cable are divided into controlled power lines and signal lines, at the same time, the collector selects two controlled power lines to send a control voltage of a certain polarity to the branch controller, the polarity of the voltage can be selected to correspond to the branch controller to access the sub-network to enter the system work. In the case of one signal line, two branch controllers can be connected between any two controlled power lines, and the control voltage polarities of the two branch controllers are opposite, so that by controlling the polarity of the two controlled power lines, two control voltages of different polarities can be sent, so that the two branch controllers can work respectively, and the number of branch channels is doubled. Specifically, if there are m+s cores, where the number of signal lines is s and the number of controlled power lines is m, then m+s sub-network channels can be constructed. Generally, s is not less than 1 and m is not less than 2.

[0029] The improvement of the present application is that based on the idea of time division multiplexing, a large network is divided into a plurality of small sub-networks, and by independently controlling the sub-network access, the reliability of the system can be enhanced while the system capacity can be flexibly controlled. For example, in a scenario requiring a large number of sensors, more sensor sub-networks can be accessed to the system to improve the system capacity, and the faulty sensor sub-networks can be peeled off the system to enhance the reliability of the system.

[0030] In a possible implementation, the collector comprises a control circuit and a controlled switching switch, the control circuit is connected to the control end of the controlled switching switch, each of the controlled switching switches is used to connect the controlled power line to the power supply, the ground or the intermediate position according to the signal of the control circuit, so that each controlled power line has three states of connecting the power supply, connecting the ground or being in the intermediate state.

[0031] Further, the collector further comprises a signal channel switching control circuit, a parasitic power supply sensor acquisition circuit and / or a digital sensor acquisition circuit and / or a bus subsystem processing circuit, the parasitic power supply sensor acquisition circuit, the digital sensor acquisition circuit and the bus subsystem processing circuit are connected to the corresponding signal lines through the signal channel switching control circuit.

[0032] Specifically, in the collector, the conduction of the s signal lines is switched by the signal channel switching control circuit, the transmission signals of the parasitic power supply sensor sub-network are acquired by the parasitic power supply sensor acquisition circuit, the transmission signals of the digital sensor sub-network are acquired by the digital sensor acquisition circuit, and the transmission signals of the bus subsystem processing circuit sub-network are acquired by the bus subsystem processing circuit; in the collector, the control circuit and the controlled switching switch are used to control the selection of two controlled power lines to connect the power supply and the ground at the same time, to form a control voltage of a certain polarity.

[0033] ​In one possible implementation, the branch controller comprises a unidirectional controlled on element, the unidirectional controlled on element is connected with two controlled power supply lines, one end of the controlled passage of the unidirectional controlled on element is connected with the sub-network, and the other end is connected with the signal line, and the unidirectional controlled on element is used to turn on the controlled passage when the controlled power supply lines provide control voltage of correct polarity.

[0034] In another possible implementation, the branch controller comprises a unidirectional on element and a controlled on element, the control ends of the unidirectional on element and the controlled on element are connected in series and then connected between two controlled power supply lines, one end of the controlled passage of the controlled on element is connected with the sub-network, and the other end is connected with the signal line, and the controlled on element is used to turn on the controlled passage when the controlled power supply lines provide control voltage of correct polarity.

[0035] Further, the branch controller adopts a controlled on element of mechanical contact.

[0036] Specifically, the branch controller needs to have the function of unidirectional on, which can adopt a unidirectional controlled on element that realizes unidirectional on by itself or adopt a controlled on element combined with a unidirectional on element to realize the function. The branch controller with the function of unidirectional on enables a pair of branch controllers to be connected between any two controlled power supply lines, thereby realizing the branch network multiplication scheme; when only one signal line provides a signal channel, one pair (two) of branch controllers can be connected between any two controlled power supply lines to connect two sub-networks.

[0037] It should be noted that the unidirectional on element can adopt a diode or other elements or element combinations with the function of unidirectional on. The controlled on element can be composed of one or more electronic switches, relays or repeaters. In addition, when the controlled on element is a mechanical contact switch, physical isolation can be realized between each sub-network and the system.

[0038] In one possible implementation, the sub-network comprises a sub-network composed of parasitic power supply sensors and / or a sub-network composed of digital sensors and / or a sub-network composed of bus type circuit subsystems.

[0039] Further, the sub-network comprises one or more sub-network signal lines, and the sub-network signal lines are connected with signal ends of a plurality of parasitic power supply sensors or digital sensors or bus type circuit subsystems.

[0040] In one possible implementation, when the collector provides multiplex power supply, the controlled power supply line supplies power to the sub-network connected with the branch controller, and when the collector provides independent power supply, the multi-core cable further comprises a power supply line that supplies power to the sub-network connected with the branch controller.

[0041] Specifically, in the case of using multiplex power supply, the controlled power lines can supply power for the branch controllers, and also supply power for the sub-networks connected with the branch controllers through the branch controllers; in the case of using independent power supply, the multi-core cable needs to be additionally provided with power supply lines to supply power for the sub-networks through the branch controllers.

[0042] It can be understood that the wired network networking architecture provided by the utility model can be applied to wired sensor networks or other networks with a large number of sub-networks / sub-systems to form a time-division multiplexing system. The utility model creates multiple completely independent sub-networks through a small amount of cable, increases the system capacity on the basis of maintaining simple wiring, and reduces the difficulty of networking wiring; the system reliability and maintainability are increased through independent control of sub-network access by multiple branch controllers; the sensor compatibility problem of the system is solved through access of multiple sub-networks by multiple branch controllers; the sub-networks can be encapsulated for standardized production, and the production cost is reduced.

[0043] Please refer to Figure 2 , as shown in the figure, Figure 2 The wired sensor network provided by the embodiment of the utility model is shown in the figure. The wired sensor network adopts the wired network networking architecture as described above, wherein the collector comprises a parasitic power supply sensor acquisition circuit and a digital sensor acquisition circuit, and the sub-network comprises a sub-network composed of parasitic power supply sensors and a sub-network composed of digital sensors.

[0044] Specifically, Figure 2 The wired sensor network is a single-bus type sensor network. In the wired sensor network, the sensors can be divided into parasitic power supply single-bus sensors (parasitic power supply sensors) and conventional power supply single-bus sensors (digital sensors) according to the power supply type; the single-bus temperature sensors and single-bus temperature and humidity integrated sensors are divided according to the function. Figure 2 In the embodiment, the multi-core cable contains 5 controlled power lines and 2 signal lines, and can construct branches, and 40 sub-networks are constructed through 40 branch controllers. Assuming that the controlled power line C1 is connected to the positive power supply and the controlled power line C2 is connected to the negative power supply, then the channel 1 and the channel 21 are connected to work, wherein the channel 1 sub-network is connected to the signal line S1, and the channel 21 sub-network is connected to the signal line S2, so that two different networks work at the same time. Assuming that the controlled power line C1 is connected to the negative power supply and the controlled power line C2 is connected to the positive power supply, then the channel 11 and the channel 31 are connected to work, wherein the channel 11 sub-network is connected to the signal line S1, and the channel 31 sub-network is connected to the signal line S2, so that another two different networks work at the same time. The rest is similar.

[0045] It can be understood that the utility model discloses a wired sensor network is divided into multiple independent sub-networks, and multiple completely independent sub-networks are connected through a small amount of cable, and the number of sub-networks is determined by formula Wherein s is the number of signal lines, and m is the number of controlled power lines. This design allows complete isolation between sub-networks, first, increases system capacity and enhances anti-interference and lightning surge resistance; second, makes the number repeatable, avoids on-site secondary numbering, simplifies construction and maintenance work, and improves the versatility of sensors; third, the failure of a single sub-network will not cause the entire system to fail, simplifying troubleshooting and reducing maintenance costs; fourth, the sub-network supports the coexistence of normal power supply and parasitic power supply sensor networks; fifth, the sub-network supports the coexistence of different types of digital sensors, enhancing system compatibility. The utility model realizes the multiplication of sub-networks by setting a one-way conduction branch controller, and reduces the number of acquisition channels required by the system through time-division multiplexing of signal lines and controlled power lines.

[0046] Further, the wired network networking architecture of the utility model can realize standardized production and reduce production cost by producing sensor packaging in units of sub-networks.

[0047] The above detailed description of the specific embodiment further describes the purpose, technical solutions and beneficial effects of the utility model, and it should be understood that the above is only a specific embodiment of the utility model and does not limit the protection scope of the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A cabled network networking architecture, characterized by, include: Data acquisition unit, multi-core cable and multiple branch controllers; The data collector is connected to multiple branch controllers via the multi-core cable, and each branch controller is connected to a sub-network. The multi-core cable comprises s signal lines and m controlled power lines, , The signal lines connect the sub-networks through the branch controllers, and the controlled power lines connect the branch controllers, which are used to turn on the connection of the sub-networks and the signal lines according to the control voltage of the controlled power lines. At most 2s branch controllers are directly connected between any two of the controlled power lines. The 2s branch controllers are paired up, and the s pairs of branch controllers are connected to the data acquisition unit through s signal lines. Each pair of branch controllers is connected to the sub-network and the signal lines through a control voltage of opposite polarity. The multi-core cable is connected to at most one branch controller, accessing one subnetwork.

2. The architecture of a wired network group according to claim 1, wherein, The data collector includes: The control circuit and the controlled switching switch are provided. The control circuit is connected to the control terminal of the controlled switching switch. Each controlled switching switch is used to connect to the power supply, ground, or intermediate position of the controlled power line according to the signal of the control circuit, so that each controlled power line has three states: connected to power supply, connected to ground, or in an intermediate state.

3. The architecture of a wired network group according to claim 2, wherein, The data acquisition unit further includes: a signal channel switching control circuit, a parasitic power supply sensor acquisition circuit and / or a digital sensor acquisition circuit and / or a bus subsystem processing circuit, wherein the parasitic power supply sensor acquisition circuit, the digital sensor acquisition circuit and the bus subsystem processing circuit are all connected to corresponding signal lines through the signal channel switching control circuit.

4. The architecture of a wired network group according to claim 1, wherein, The branch controller includes: a unidirectional controlled switching element, which is connected to two controlled power lines. One end of the controlled path of the unidirectional controlled switching element is connected to the sub-network, and the other end is connected to the signal line. The unidirectional controlled switching element is used to switch on the controlled path when the controlled power line provides a control voltage of the correct polarity.

5. The architecture of a wired network according to claim 1, wherein, The branch controller includes a unidirectional conducting element and a controlled switching element. The control terminals of the unidirectional conducting element and the controlled switching element are connected in series between two controlled power lines. One end of the controlled path of the controlled switching element is connected to the sub-network, and the other end is connected to the signal line. The controlled switching element is used to turn on the controlled path when the controlled power line provides a control voltage of the correct polarity.

6. The architecture of a wired network group according to claim 4 or 5, characterized in that, The branch controller uses a controlled connection element with mechanical contacts.

7. The architecture of a wired network according to claim 1, wherein, The sub-networks include: sub-networks composed of parasitic power supply sensors and / or sub-networks composed of digital sensors and / or sub-networks composed of bus-type circuit subsystems.

8. The architecture of a wired network group according to claim 7, wherein, The sub-network includes one or more sub-network signal lines, which are connected to the signal terminals of multiple parasitic power supply sensors, digital sensors, or bus-type circuit subsystems.

9. The architecture of a wired network according to claim 1, wherein, When the data collector provides a multiplexed power supply, the controlled power line supplies power to the sub-network connected to the branch controller. When the data collector provides an independent power supply, the multi-core cable also includes a power line that supplies power to the sub-network connected to the branch controller.

10. A wired sensor network, characterized by The wired network architecture described in any one of claims 1-9 is adopted, wherein the data collector includes a parasitic power supply sensor acquisition circuit and a digital sensor acquisition circuit, and the sub-network includes a sub-network composed of parasitic power supply sensors and a sub-network composed of digital sensors.

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