Sensing data transmission and reception system based on parallel communication to which efficient network construction method is applied

Abstract

The sensing data transmission and reception system based on parallel communication to which an efficient network construction method is applied, according to the present invention, may comprise: a plurality of sensor node devices which perform a peripheral role by transmitting sensing data to any one of a root node device and another sensor node device performing a central role, and which perform a central role by receiving the sensing data from one or more other sensor node devices performing a peripheral role; and the root node device which performs a central role by receiving the sensing data from a sensor node device performing a peripheral role, among the plurality of sensor node devices, and aggregates the received sensing data.

Description

A parallel communication-based sensing data transmission and reception system with an efficient network construction method.

[0001] The present invention relates to a parallel communication-based sensing data transmission and reception system to which an efficient network construction method is applied, and more particularly, to a parallel communication-based sensing data transmission and reception system to which an efficient network construction method is applied, which constructs a parallel communication network between a plurality of sensor node devices performing both a central role and a peripheral role and a root node device performing a central role, while efficiently constructing a network by controlling the time for scanning a posting signal and the time for waiting for scanning.

[0002] Bluetooth is an industry standard for personal area networks (PANs) that uses the IEEE 802.15.1 specification and allows various devices to communicate with each other using radio frequencies that are available globally in a safe, low-cost manner.

[0003] Among the various versions of Bluetooth, a new protocol stack for low-power (BLE; Bluetooth Low Energy) is proposed starting with Bluetooth 4.0. This includes "Bluetooth Smart Ready" for power hosts and "Bluetooth Smart" for sensors.

[0004] A chip that only supports BLE is called single mode, meaning it only supports one-way transmission, and the product it is equipped with is also called Bluetooth smart. A chip that is included with classic Bluetooth is called dual mode, meaning it supports two-way transmission, and the product it is equipped with is also called Bluetooth smart ready.

[0005] However, since conventionally BLE devices are only connected serially, data can only be received from serially connected BLE devices, and there is a limitation in collecting data from multiple BLE devices.

[0006] To address this, BLE mesh networks based on managed flooding have emerged. Based on managed flooding, BLE mesh networks feature a network message cache feature that stores previously received messages in a specific list, preventing duplicate messages from being received or forwarded. They also feature a relay feature that allows data to be exchanged between distant nodes within the same network.

[0007] However, the BLE mesh network has the problem of consuming more power than other communication methods because the BLE devices, which are nodes that make up the network, must remain on to receive data and all received data must be relayed.

[0008] The purpose of the present invention is to provide a parallel communication-based sensing data transmission and reception system that applies an efficient network construction method capable of establishing a parallel structure communication connection between a plurality of sensor node devices performing both a central role and a peripheral role.

[0009] In addition, an object of the present invention is to provide a parallel communication-based sensing data transmission and reception system to which an efficient network construction method is applied, which can efficiently construct a network by controlling the time for scanning a posting signal and the time for waiting for scanning.

[0010] A parallel communication-based sensing data transmission and reception system to which an efficient network construction method according to the present invention is applied comprises: a plurality of sensor node devices broadcasting a posting signal including device information; and a root node device which, when the posting signal is received, establishes a communication connection with a first sensor node device among the sensor node devices that broadcast the received posting signal and performs a central role for the first sensor node device; wherein, when the communication connection with the root node device is established, the plurality of sensor node devices perform a peripheral role for the root node device; when the posting signal is received from another sensor node device, the plurality of sensor node devices establish a communication connection with a second sensor node device among the other sensor node devices that broadcast the received posting signal and performs a central role for the second sensor node device; and when the communication connection with a third sensor node device that has received the broadcast posting signal is established, the plurality of sensor node devices perform a peripheral role for the third sensor node device.

[0011] The root node device, when the posting signal is received, establishes the communication connection only with the first sensor node device based on the reception signal strength of each of the received posting signals, and the plurality of sensor nodes, when the posting signal is received, establish the communication connection only with the second sensor node device based on the reception signal strength of each of the received posting signals.

[0012] When the communication connection is established, the plurality of sensor nodes and the root node device may scan the posting signal for a maximum scan time from the time of establishment of the communication connection to attempt to receive the posting signal.

[0013] When the maximum scan time has expired, the plurality of sensor nodes and the root node device may not perform the scan for the posting signal during a scan waiting time from a scan end time when the maximum scan time has expired, and when the scan waiting time has expired, may scan the posting signal during the maximum scan time from a waiting end time when the scan waiting time has expired to attempt to receive the posting signal.

[0014] The above plurality of sensor node devices are characterized in that when the communication connection with the root node device or the third sensor node device is released, the communication connection with the second sensor node device is released.

[0015] The plurality of sensor node devices may transmit first sensing data to the third sensor node device and receive second sensing data from the second sensor node device, and if the first sensing data and the second sensing data are the same, the communication connection with the second sensor node device may be released.

[0016] A parallel communication-based sensing data transmission and reception system to which an efficient network construction method according to the present invention is applied may include: the plurality of sensor node devices; the root node device; and a field worker device that receives and displays sensing data in proximity to any one of the plurality of sensor node devices.

[0017] A parallel communication-based sensing data transmission and reception system to which an efficient network construction method according to the present invention is applied can improve communication performance by increasing the connection flexibility of a network protocol by establishing a parallel structured communication connection between a plurality of sensor node devices performing both a central role and a peripheral role.

[0018] In addition, the parallel communication-based sensing data transmission and reception system to which the efficient network construction method according to the present invention is applied can efficiently construct a network by controlling the time for scanning a posting signal and the time for waiting for scanning.

[0019] In addition, the parallel communication-based sensing data transmission and reception system to which the efficient network construction method according to the present invention is applied establishes a parallel structure communication connection between a plurality of sensor node devices performing both a central role and a peripheral role, thereby transmitting the sensing data to the root node device, thereby enabling comprehensive management of the sensing data.

[0020] In addition, the parallel communication-based sensing data transmission and reception system to which the efficient network construction method according to the present invention is applied can provide sensing data to field workers through field worker devices without establishing a communication connection between the field worker devices and the sensor node devices by having the sensor node devices broadcast a posting signal containing sensing data.

[0021] FIG. 1 is a diagram illustrating a connection configuration of a parallel communication-based sensing data transmission and reception system to which an efficient network construction method according to one embodiment of the present invention is applied.

[0022] FIG. 2 is a block diagram of a sensor node device of a parallel communication-based sensing data transmission and reception system to which an efficient network construction method according to an embodiment of the present invention is applied.

[0023] FIG. 3 is a block diagram of a root node device of a parallel communication-based sensing data transmission and reception system to which an efficient network construction method according to an embodiment of the present invention is applied.

[0024] FIG. 4 is a diagram for explaining an example of communication between a sensor node device and a root node device of a parallel communication-based sensing data transmission and reception system to which an efficient network construction method according to an embodiment of the present invention is applied.

[0025] FIG. 5 is a diagram for explaining an example of communication between sensor node devices of a parallel communication-based sensing data transmission and reception system to which an efficient network construction method according to one embodiment of the present invention is applied.

[0026] FIG. 6 is a diagram for explaining another example of communication between sensor node devices of a parallel communication-based sensing data transmission and reception system to which an efficient network construction method according to one embodiment of the present invention is applied.

[0027] FIG. 7 is a diagram for explaining a process in which a sensor node device of a parallel communication-based sensing data transmission and reception system to which an efficient network construction method according to an embodiment of the present invention is applied broadcasts a posting signal, transmits sensing data, and scans a posting signal.

[0028] Hereinafter, various embodiments of the present invention will be described with reference to the accompanying drawings. However, this is not intended to limit the present invention to specific embodiments, but should be understood to include various modifications, equivalents, and / or alternatives of the embodiments of the present invention. In connection with the description of the drawings, similar reference numerals may be used for similar components.

[0029] In this document, the expressions "have", "may have", "include", or "may include" indicate the presence of a feature (e.g., a number, function, operation, or component such as a part), but do not exclude the presence of additional features.

[0030] In this document, the expressions "A or B", "at least one of A and / or B", or "one or more of A and / or B" can include all possible combinations of the items listed together. For example, "A or B", "at least one of A and B", or "at least one of A or B" can all refer to cases where (1) at least one A is included, (2) at least one B is included, or (3) at least one A and at least one B are included.

[0031] The terms "first," "second," "first," or "second" used in this document can describe various components, regardless of order and / or importance, and are only used to distinguish one component from another, but do not limit the components. For example, a first user device and a second user device can represent different user devices, regardless of order or importance. For example, a first component can be referred to as a second component, and similarly, a second component can be referred to as a first component, without departing from the scope of the rights set forth in this document.

[0032] In this specification, “~module”, “~part”, and “~device” may include one or more of a central processing unit (CPU), an application processor (AP), and a communication processor (CP).

[0033] In this specification, “~module,” “~part,” and “~device” refer to all types of hardware devices including at least one processor, and may be understood to encompass software configurations operating on the hardware devices according to embodiments. For example, “~module,” “~part,” and “~device” may be understood to encompass, but are not limited to, mechanical drive devices, smartphones, tablet PCs, desktops, laptops, sensors, and user clients and applications operating on each device.

[0034] The terms used in this document are used only to describe specific embodiments and may not be intended to limit the scope of other embodiments. The singular expression may include plural expressions unless the context clearly indicates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by a person of ordinary skill in the art described in this document. Terms defined in general dictionaries among the terms used in this document may be interpreted as having the same or similar meaning in the context of the relevant technology, and shall not be interpreted in an idealized or overly formal sense unless explicitly defined in this document. In some cases, even if a term is defined in this document, it cannot be interpreted to exclude embodiments of this document.

[0035] FIG. 1 is a diagram illustrating a connection configuration of a parallel communication-based sensing data transmission and reception system to which an efficient network construction method according to one embodiment of the present invention is applied.

[0036] Referring to FIG. 1, a parallel communication-based sensing data transmission and reception system to which an efficient network construction method according to an embodiment of the present invention is applied may include a plurality of sensor node devices (100) and a root node device (200).

[0037] A plurality of sensor node devices (100) and a root node device (200) can form a network by establishing a mutual communication connection.

[0038] To this end, a plurality of sensor node devices (100) broadcast a posting signal, and a root node device (200) scans the posting signal and receives the posting signal, thereby establishing a communication connection with some sensor node devices (100), and a plurality of sensor node devices (100) scans the posting signal of other sensor node devices (100) and receives the posting signal, thereby establishing a communication connection with other sensor node devices (100).

[0039] To this end, multiple sensor node devices (100) can perform both peripheral and central roles, and the root node device (200) can perform the central role.

[0040] Through this, sensing data can be transmitted and received between multiple sensor node devices (100) with a communication connection established, and sensing data can be transmitted and received between the sensor node devices (100) with a communication connection established and the root node device (200).

[0041] At this time, multiple sensor node devices (100) can perform measurements in the deployed area to generate sensing data and transmit the sensing data to another device with which a communication connection is established (another sensor node device (100) or a root node device (200)).

[0042] Here, sensing data refers to data generated through measurement, and its type may not be limited. For example, sensing data may be any of the following: biosignals, concentration of a specific substance, temperature, humidity, or illuminance.

[0043] That is, multiple sensor node devices (100) can mutually transmit and receive sensing data generated by performing measurements or sensing data received from other sensor node devices and ultimately transmit them to the root node device (200).

[0044] The root node device (200) can receive and synthesize sensing data generated from each of a plurality of sensor node devices (100).

[0045] Specifically, the root node device (200) can organize and synthesize the received sensing data in a time series for each of the plurality of sensor node devices (100), or organize and synthesize the received sensing data in a time series for each of the placement positions of each of the plurality of sensor node devices (100).

[0046] Additionally, the root node device (200) can transmit the synthesized sensing data to an external network.

[0047] Meanwhile, a parallel communication-based sensing data transmission and reception system to which an efficient network construction method according to an embodiment of the present invention is applied can transmit and receive sensing data between a plurality of sensor node devices (100) and a root node device (200) using a short-range wireless communication method.

[0048] Specifically, a parallel communication-based sensing data transmission and reception system to which an efficient network construction method according to an embodiment of the present invention is applied can transmit and receive sensing data using the BLE (Bluetooth Low Energy) communication method of Bluetooth 4.0. Accordingly, a parallel communication-based sensing data transmission and reception system to which an efficient network construction method according to an embodiment of the present invention is applied can utilize the protocol stack, layers, and profiles specified in the BLE (Bluetooth Low Energy) communication method.

[0049] Hereinafter, a network construction method of a parallel communication-based sensing data transmission and reception system to which an efficient network construction method according to an embodiment of the present invention is applied will be described.

[0050] FIG. 2 is a block diagram of a sensor node device of a parallel communication-based sensing data transmission and reception system to which an efficient network construction method is applied according to an embodiment of the present invention, FIG. 3 is a block diagram of a root node device of a parallel communication-based sensing data transmission and reception system to which an efficient network construction method is applied according to an embodiment of the present invention, FIG. 4 is a diagram for explaining an example of communication between a sensor node device and a root node device of a parallel communication-based sensing data transmission and reception system to which an efficient network construction method is applied according to an embodiment of the present invention, FIG. 5 is a diagram for explaining an example of communication between sensor node devices of a parallel communication-based sensing data transmission and reception system to which an efficient network construction method is applied according to an embodiment of the present invention, FIG. 6 is a diagram for explaining another example of communication between sensor node devices of a parallel communication-based sensing data transmission and reception system to which an efficient network construction method is applied according to an embodiment of the present invention, and FIG. 7 is a diagram for explaining a process in which a sensor node device of a parallel communication-based sensing data transmission and reception system to which an efficient network construction method is applied performs broadcasting of a posting signal, transmission of sensing data, and scanning for a posting signal according to an embodiment of the present invention.

[0051] Referring further to FIGS. 2 to 7, a plurality of sensor node devices (100) may be nodes constituting a network, may perform both a central role and a peripheral role within the network, and may be implemented as, for example, a sensor device.

[0052] The root node device (200) may be the top node that constitutes the network, may perform a central role within the network, and may be, for example, an AP device (Access Point device).

[0053] Each of these plurality of sensor node devices (100) may include a sensing unit (110), a peripheral module (120), one or more central modules (130), and a storage unit (140).

[0054] Additionally, the root node device (200) may include a central module (210), a processor (220), a display unit (230), and a storage unit (240).

[0055] Each of the plurality of sensor node devices (100) can broadcast an advertising signal containing device information.

[0056] Thereafter, when the root node device (200) receives some of the posting signals broadcast from a plurality of sensor node devices (100), it establishes a communication connection with the first sensor node device (100) among the sensor node devices (100) that broadcast the received posting signal, thereby performing a central role for the first sensor node device (100).

[0057] Next, when a communication connection is established with the root node device (200), the first sensor node device (100) can perform a peripheral role for the root node device (200).

[0058] At this time, the root node device (200) can establish a communication connection only with the first sensor node device (100) based on the reception signal strength of each received posting signal.

[0059] Specifically, each peripheral module (120) of a plurality of sensor node devices (100) can broadcast a posting signal, and the central module (210) of the root node device (200) can scan the posting signal and receive the scanned posting signal.

[0060] Next, the processor (220) of the root node device (200) can control the central module (210) to establish a communication connection only with the first sensor node device (100) that broadcasted the posting signal with the greatest reception signal strength among the received posting signals.

[0061] Here, the device information may be information that can identify the corresponding sensor node device, and for example, the device information may include one or more of device identification information, MAC address information, and TX Power information.

[0062] Thereafter, the central module (210) of the root node device (200) can establish a communication connection by transmitting a connection request signal and connection parameters to the peripheral module (120) of the first sensor node device (100).

[0063] At this time, each central module (210) of the root node device (200) can establish a communication connection by transmitting a connection request signal and connection parameters to the peripheral module (120) of the first sensor node device (100) if the device information of the posting signal received from the first sensor node device (100) indicates a peripheral referral target device.

[0064] Specifically, each of one or more central modules (130) of the root node device (200) can determine that the device information included in the posting signal represents a peripheral referral target device if the device information is identical to the peripheral referral setting information.

[0065] Here, the peripheral configuration information may be information indicating a sensor node device with which the central module is set to establish a communication connection, and for example, the peripheral configuration information may include one or more of device identification information, MAC address information, and TX Power information.

[0066] Here, the connection parameters are parameters used to establish a communication connection, and may be parameters that define the data transmission / reception speed and the criteria for determining communication connection release between the peripheral module and the central module.

[0067] Next, when the peripheral module (120) of the first sensor node device (100) receives a connection request signal and connection parameters from the central module (210) of the root node device (200), it can establish a communication connection with the root node device (200) using the connection parameters.

[0068] At this time, the sensing unit (110) of the first sensor node device (100) can perform a measurement role and generate sensing data. As described above, the sensing unit (110) can perform a measurement role in the area where the first sensor node device (100) is placed and generate sensing data as a result of the performance.

[0069] The type of sensing data is not limited, but for example, the sensing data may be any one of a biosignal, concentration of a specific substance, temperature, humidity, and illuminance.

[0070] Thereafter, the peripheral module (120) of the first sensor node device (100) can transmit sensing data to the root node device (200) with which a communication connection is established.

[0071] Meanwhile, when a plurality of sensor node devices (100) receive a posting signal from another sensor node device, they can establish a communication connection with a second sensor node device (100) among the other sensor node devices that broadcast the received posting signal, thereby performing a central role for the second sensor node device (100).

[0072] At this time, the plurality of sensor node devices (100) can establish a communication connection only with the first sensor node device (100) based on the reception signal strength of each of the received posting signals.

[0073] Specifically, one or more central modules (130) of a plurality of sensor node devices (100) can scan a posting signal and receive the scanned posting signal.

[0074] Next, the plurality of sensor node devices (100) can control one or more central modules (130) to establish a communication connection only with the second sensor node device (100) that broadcasted the posting signal with the greatest reception signal strength among the received posting signals.

[0075] Thereafter, one or more central modules (130) of the plurality of sensor node devices (100) can establish a communication connection by transmitting a connection request signal and connection parameters to the peripheral module (120) of the second sensor node device (100).

[0076] At this time, each of one or more central modules (130) of the plurality of sensor node devices (100) can establish a communication connection by transmitting a connection request signal and connection parameters to the peripheral module (120) of the first sensor node device (100) when the device information of the posting signal received from the second sensor node device (100) indicates a peripheral target device.

[0077] Next, the peripheral module (120) of the second sensor node device (100) can establish a communication connection with the sensor node device (100) that transmitted the connection request signal and connection parameters in the same manner as the peripheral module (120) of the first sensor node device (100).

[0078] Thereafter, the peripheral module (120) of the second sensor node device (100) can transmit sensing data to the sensor node device (100) with which a communication connection is established in the same manner as the peripheral module (120) of the first sensor node device (100).

[0079] Thereafter, the plurality of sensor node devices (100) can transmit sensing data received from the second sensor node device (100) to another sensor node device (100) or a root node device (200), which is an upper node.

[0080] Meanwhile, when a communication connection is established with a third sensor node device (100) that has received a broadcasted posting signal, a plurality of sensor node devices (100) can perform a peripheral role for the third sensor node device (100).

[0081] Specifically, the peripheral module (120) of the plurality of sensor node devices (100) can establish a communication connection with the third sensor node device (100) that transmits a connection request signal and connection parameters in the same manner as the peripheral module (120) of the first sensor node device (100).

[0082] Thereafter, the peripheral module (120) of the plurality of sensor node devices (100) can transmit sensing data to the third sensor node device (100) with which a communication connection is established in the same manner as the peripheral module (120) of the first sensor node device (100).

[0083] Meanwhile, when a communication connection is established with one or more other sensor node devices (100), a plurality of sensor node devices (100) can perform cross-sectional broadcasting of a posting signal using a beacon packet (P1), transmission of sensing data using a connect packet (P2), and scanning (S) for posting signals of other sensor node devices (100).

[0084] Specifically, the plurality of sensor node devices (100) can control the peripheral module (120) and one or more central modules (130) to perform each of broadcasting (P1) of a posting signal, transmitting (P2) of sensing data, and scanning (S) for the posting signal at an arbitrary cycle, but to prevent each of broadcasting (P1) of a posting signal, transmitting (P2) of sensing data, and scanning (S) for the posting signal from being performed in an overlapping manner.

[0085] Meanwhile, a plurality of sensor node devices (100) may compare the number of devices of other sensor node devices (100) with which a communication connection has been established with the maximum number of connected devices, and if the number of devices is equal to the maximum number of connected devices, establishment of an additional communication connection may not be performed.

[0086] Meanwhile, when a communication connection is established, multiple sensor node devices (100) can scan the posting signals of other sensor node devices (100) for a maximum scan time from the time of establishment of the communication connection to attempt to receive the posting signals.

[0087] Afterwards, when the maximum scan time has ended, the plurality of sensor node devices (100) may not perform scanning for a posting signal during the scan waiting time from the scan end point at which the maximum scan time has ended.

[0088] Next, when the scan waiting time ends, the plurality of sensor node devices (100) can scan the posting signal for a maximum scan time from the waiting end point when the scan waiting time ends to attempt to receive the posting signal.

[0089] That is, multiple sensor node devices (100) can alternately perform scanning for a posted signal and waiting for scanning for a posted signal.

[0090] In another embodiment, when the maximum scan time has expired, the plurality of sensor node devices (100) can check the most recent establishment time at which a communication connection was recently established, calculate the elapsed time from the most recent establishment time to the present, and set the scan waiting time in proportion to the calculated elapsed time.

[0091] That is, a plurality of sensor node devices (100) according to another embodiment can set a longer scan standby time the longer a communication connection has been established recently, thereby reducing power consumption required for scanning in a situation where communication connections do not occur frequently.

[0092] In another embodiment, a plurality of sensor node devices (100) may, when the maximum scan time has expired, check the most recent establishment time at which a communication connection was recently established, calculate the elapsed time from the most recent establishment time to the present, and, if the calculated elapsed time is less than the reference elapsed time, set the scan waiting time in proportion to the calculated elapsed time, but may set the scan waiting time so that the set scan waiting time does not exceed the maximum reference time.

[0093] In addition, a plurality of sensor node devices (100) according to another embodiment may, when the maximum scan time has expired, check the most recent establishment time at which a communication connection was recently established, calculate the elapsed time from the most recent establishment time to the present, and, if the calculated elapsed time is greater than or equal to a reference elapsed time, set a scan waiting time inversely proportional to the calculated elapsed time, but may set the scan waiting time such that the set scan waiting time exceeds the minimum reference time.

[0094] That is, in another embodiment, a plurality of sensor node devices (100) may set the scan waiting time to be longer as the calculated elapsed time is longer, but not to exceed the maximum reference time, if the calculated elapsed time is shorter than the reference elapsed time, but to exceed the minimum reference time.

[0095] Accordingly, if a state in which communication is not established continues, a plurality of sensor node devices (100) according to another embodiment may set the scan waiting time by increasing it until just before the point at which the calculated elapsed time becomes equal to the reference elapsed time, and then set the scan waiting time by decreasing it from the point at which the calculated elapsed time becomes equal to the reference elapsed time.

[0096] This prevents situations where the scan is not performed for an excessively long time, resulting in no post signals being received.

[0097] Meanwhile, when the communication connection with the root node device (200) or the third sensor node device (100) described above is disconnected, the plurality of sensor node devices (100) can disconnect the communication connection with the second sensor node device (100) described above.

[0098] That is, when the communication connection with the upper node is disconnected, the plurality of sensor node devices (100) can disconnect the communication connection with the lower node, thereby reducing power consumption by disconnecting unnecessary communication connections.

[0099] Meanwhile, the plurality of sensor node devices (100) transmit first sensing data to the third sensor node device (100) described above and receive second sensing data from the second sensor node device (100) described above, and if the first sensing data and the second sensing data are the same, the communication connection with the second sensor node device (100) can be released.

[0100] That is, if the data transmitted to the upper node is identical to the data received from the lower node, the plurality of sensor node devices (100) can determine that a closed curve between nodes has been established within the network and can release the communication connection.

[0101] Meanwhile, the storage unit (140) can store programs (one or more instructions) for processing and control. The programs stored in the storage unit (140) can be divided into multiple modules according to function.

[0102] Meanwhile, the processor (220) can generate the alignment and synthesis results of the sensing data described above as comprehensive image data and control the display unit (230) to display the generated comprehensive image data on the screen.

[0103] The display unit (230) can display comprehensive image data generated from the processor (220) under the control of the processor (220).

[0104] For this purpose, the display unit (230) may be equipped with a display module capable of outputting image data to the screen.

[0105] This comprehensive image data, which is a synthesis of sensing data, can be viewed by a central administrator.

[0106] The processor (220) can perform the operations of each of the components described above, and may include one or more cores (not shown) and a graphics processing unit (not shown) and / or a connection path (e.g., a bus, etc.) for transmitting and receiving signals with other components.

[0107] The processor (220) may be configured to perform the operations of each component described above by executing one or more instructions stored in the storage unit (240).

[0108] The storage unit (240) can store programs (one or more instructions) for processing and controlling the processor (220). The programs stored in the storage unit (240) can be divided into multiple modules according to function.

[0109] Meanwhile, a parallel communication-based sensing data transmission and reception system to which an efficient network construction method according to another embodiment of the present invention is applied may further include a field worker device (300).

[0110] A field worker device (300) can scan a broadcasted posting signal by approaching one of a plurality of sensing node devices (100) and display sensing data included in the posting signal.

[0111] Such a field worker device (300) may be a device controlled by a field worker performing various tasks in proximity to an area where a sensing node device (100) is placed.

[0112] The field worker device (300) may include a communication unit, a processor, a display unit, and a storage unit.

[0113] The communication unit performs the role of scanning the posting signal and can transmit the sensing data included in the posting signal to the processor.

[0114] To this end, the communication unit (150) may be equipped with a BLE communication module that performs communication using the BLE communication method.

[0115] The processor can control the display unit to display the sensing data included in the posting signal on the screen.

[0116] The display unit can display sensing data under the control of the processor.

[0117] For this purpose, the display unit may be equipped with a display module capable of outputting sensing data to a screen.

[0118] The sensing data displayed on the display can be viewed by field workers.

[0119] Meanwhile, the processor may perform the operations of each of the components described above, and may include one or more cores (not shown) and a graphics processing unit (not shown) and / or a connection path (e.g., a bus) for transmitting and receiving signals with other components.

[0120] The processor may be configured to perform the operations of each component described above by executing one or more instructions stored in the storage unit.

[0121] The storage unit can store programs (one or more instructions) for processing and controlling the processor. The programs stored in the storage unit can be divided into multiple modules according to their functions.

[0122] The present invention has been described above, focusing on preferred embodiments. Those skilled in the art will appreciate that variations and modifications can be made to the invention without departing from its essential characteristics. Therefore, the disclosed embodiments should be considered illustrative rather than limiting. The scope of the present invention is set forth in the claims, not the foregoing description, and all differences within the scope equivalent thereto should be construed as being encompassed by the invention.

[0123] As described above, although the present invention has been described by limited embodiments and drawings, the present invention is not limited thereto, and various modifications and variations are possible by a person having ordinary skill in the art to which the present invention pertains within the scope of the technical idea of ​​the present invention and the equivalent scope of the patent claims to be described below.

Claims

1. A plurality of sensor node devices broadcasting a posting signal containing device information; and When the above posting signal is received, a root node device that establishes a communication connection with a first sensor node device among the sensor node devices that broadcast the received posting signal and performs a central role for the first sensor node device; The above multiple sensor node devices When a communication connection is established with the above root node device, it performs a peripheral role for the above root node device, The above multiple sensor node devices When the above-mentioned posting signal is received from another sensor node device, a communication connection is established with a second sensor node device among the other sensor node devices that broadcast the received posting signal, thereby performing a central role for the second sensor node device. The above multiple sensor node devices When a communication connection is established with a third sensor node device that has received the broadcasted posting signal, it is characterized in that it performs a peripheral role for the third sensor node device. A parallel communication-based sensing data transmission and reception system using an efficient network construction method.

2. In paragraph 1, The above root node device When the above posting signal is received, the communication connection is established only with the first sensor node device based on the reception signal strength of each of the received posting signals, The above multiple sensor nodes When the above posting signal is received, the communication connection is established only with the second sensor node device based on the reception signal strength of each of the received posting signals. A parallel communication-based sensing data transmission and reception system using an efficient network construction method.

3. In paragraph 1, The above plurality of sensor nodes and the root node device When the above communication connection is established, the method is characterized in that the posting signal is scanned for a maximum scan time from the time of establishment of the communication connection to attempt to receive the posting signal. A parallel communication-based sensing data transmission and reception system using an efficient network construction method.

4. In paragraph 3, The above plurality of sensor nodes and the root node device When the above maximum scan time expires, the scan for the posted signal is not performed during the scan waiting time from the scan end point at which the above maximum scan time expires. A parallel communication-based sensing data transmission and reception system using an efficient network construction method.

5. In paragraph 4, When the scan waiting time ends, the scanning signal is scanned for the maximum scan time from the waiting end point at which the scan waiting time ends to attempt to receive the posting signal. A parallel communication-based sensing data transmission and reception system using an efficient network construction method.

6. In paragraph 1, The above multiple sensor node devices Characterized in that when the communication connection with the root node device or the third sensor node device is released, the communication connection with the second sensor node device is released. A parallel communication-based sensing data transmission and reception system using an efficient network construction method.

7. A plurality of sensor node devices according to any one of paragraphs 1 to 6; A root node device according to any one of claims 1 to 6; and A field worker device that receives and displays sensing data in proximity to any one of the plurality of sensor node devices; characterized in that it includes: A parallel communication-based sensing data transmission and reception system using an efficient network construction method.

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