CN110191173B - Low-delay node Internet of things for intelligent building application and communication method thereof - Google Patents

Low-delay node Internet of things for intelligent building application and communication method thereof Download PDF

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CN110191173B
CN110191173B CN201910448055.1A CN201910448055A CN110191173B CN 110191173 B CN110191173 B CN 110191173B CN 201910448055 A CN201910448055 A CN 201910448055A CN 110191173 B CN110191173 B CN 110191173B
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sensor node
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things
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CN110191173A (en
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王闺臣
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Terminus Beijing Technology Co Ltd
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    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
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    • H04L67/141—Setup of application sessions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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    • H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/10—Flow control between communication endpoints
    • H04W28/14—Flow control between communication endpoints using intermediate storage
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup

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Abstract

The embodiment of the application provides a low delay node thing networking of intelligence building application, includes: the system comprises a management server, an Internet of things gateway and a plurality of sensor nodes in direct communication connection with the Internet of things gateway; for a current sensor node in the plurality of sensor nodes, the current sensor node is used for sending acquired data to the management server through an internet of things gateway in direct communication connection with the current sensor node, or receiving data sent by a first sensor node, sending received data to the management server through the internet of things gateway in direct communication connection with the current sensor node, or sending acquired data and/or received data to a second sensor node, and sending the acquired data and/or received data to the management server through the internet of things gateway in direct communication connection with the second sensor node by the second sensor node.

Description

Low-delay node Internet of things for intelligent building application and communication method thereof
Technical Field
The application relates to the technical field of intelligent buildings, in particular to a low-delay node Internet of things applied to intelligent buildings and a communication method thereof.
Background
The intelligent building takes the Internet of things as an information transmission medium, takes various types of sensors and various types of automatic function systems as a hardware foundation, realizes intelligent remote state monitoring and automatic control in the aspects of heating, air conditioning, lighting, ventilation and purification and the like of the building, meets the requirements of people on individuation and comfort, accords with the great trend of green energy conservation, reduces the complicated human-computer interaction and manual operation process facing building facilities, and reduces the cost of building maintenance.
In the prior art, an intelligent building realizes data report of sensor nodes through an internet of things gateway, the internet of things gateway can support multi-channel parallel communication with a plurality of sensor nodes, but the number of parallel channels which can be supported by one internet of things gateway is very limited compared with the number of sensor nodes in the intelligent building. Therefore, the internet of things gateway is generally in a full load state, and most of the sensor nodes can establish connection with the internet of things gateway and perform data transmission after waiting for a certain time; the sensor node sends an access request to the Internet of things gateway, and then waits for the response of the Internet of things gateway; after receiving the response, the node establishes communication connection with the gateway of the Internet of things, and after the communication is completed, the node releases the communication connection for other sensor nodes to establish communication connection, so that the communication of the Internet of things has larger delay.
Disclosure of Invention
In view of this, an object of the present application is to provide a low-latency node internet of things for intelligent building application and a communication method thereof, so as to reduce latency of internet of things communication, so that data collected by a sensor node can be reported to a management server of an intelligent building in time.
In view of the above, in a first aspect of the present application, a low latency node internet of things for intelligent building applications is provided, including:
the system comprises a management server, a plurality of Internet of things gateways in communication connection with the management server, and a plurality of sensor nodes in direct communication connection with each Internet of things gateway;
for a current sensor node in the plurality of sensor nodes, the current sensor node is used for sending collected data to the management server through an internet of things gateway in direct communication connection with the current sensor node, or receiving data sent by a first sensor node, sending received data to the management server through the internet of things gateway in direct communication connection with the current sensor node, or sending collected data and/or received data to a second sensor node, and sending the collected data and/or the received data to the management server through the internet of things gateway in direct communication connection with the second sensor node by the second sensor node, so that the management server regulates and controls the intelligent building according to the received data.
In some embodiments, the internet of things gateway includes:
the access request receiving module is used for receiving an access request sent by a sensor node in direct communication connection with the gateway of the Internet of things and responding to the corresponding sensor node;
the cache module is used for caching the received data sent by the sensor node in direct communication connection with the gateway of the Internet of things;
and the data forwarding module is used for forwarding the data cached in the caching module to the management server.
In some embodiments, the caching module is specifically configured to cache the received data according to a sequence of receiving data sent by the sensor node in direct communication connection with the internet of things gateway.
In some embodiments, the internet of things gateway further includes:
and the wireless signal transmitting module is used for transmitting a wireless signal to the preset range so that the sensor node in direct communication connection with the Internet of things gateway establishes communication connection with the Internet of things gateway through the wireless signal.
In some embodiments, the current sensor node comprises:
the data acquisition module is used for acquiring data of corresponding types;
the data sending module is used for sending data to the gateway of the internet of things or the second sensor node which is in direct communication connection with the current sensor node;
and the data receiving module is used for receiving the data sent by the first sensor node.
In some embodiments, the current sensor node further comprises:
and the power supply module is used for supplying power to the data acquisition module, the data sending module and the data receiving module.
In some embodiments, the sensor nodes include a temperature sensor node, a humidity sensor node, a light level sensor node, an air quality sensor node, and a noise sensor node.
In view of the above, in a second aspect of the present application, a communication method for a low-latency node internet of things for intelligent building applications is further provided, including:
determining allowable delay time T of current sensor node and probability threshold value P for establishing communication connection with gateway of Internet of things0；
Determining probability P of the current sensor node establishing communication connection with the previous n-hop Internet of things gatewayi(T), wherein i ═ 2, 3 … … n;
probability P of establishing communication connection between the current sensor node and the previous n-hop Internet of things gatewayi(T) accumulating to obtain the current probability P (T) of establishing communication connection with the gateway of the Internet of things;
judging whether the value of the current probability P (T) is larger than the probability threshold value P0When the value of the current probability P (T) is larger than the probability threshold value P0And then, controlling the current sensor node to establish communication connection with the Internet of things gateway in the n-hop range according to the value of the hop number n.
In some embodiments, further comprising:
when the value of the current probability P (T) is less than or equal to the probability threshold value P0Then, determining the probability P of the current sensor node establishing communication connection with the (n + 1) th hop Internet of things gatewayn+1(T)；
Comparing the current probability P (T) with the probability Pn+1(T) adding the current probabilities to generate a new current probability P (T) ', and determining whether the value of the new current probability P (T)' is greater than the probability threshold value P0。
In some embodiments, further comprising:
determining probability P of the current sensor node establishing communication connection with the first 1-hop Internet of things gateway1(T), judging the probability P1Whether the value of (T) is greater than the probability threshold P0。
The embodiment of the application provides a low-delay node Internet of things for intelligent building application and a communication method thereof, wherein the low-delay node Internet of things comprises the following components: the system comprises a management server, a plurality of Internet of things gateways in communication connection with the management server, and a plurality of sensor nodes in direct communication connection with each Internet of things gateway; for a current sensor node in the plurality of sensor nodes, the current sensor node is used for sending collected data to the management server through an internet of things gateway in direct communication connection with the current sensor node, or receiving data sent by a first sensor node, sending received data to the management server through the internet of things gateway in direct communication connection with the current sensor node, or sending collected data and/or received data to a second sensor node, and sending the collected data and/or the received data to the management server through the internet of things gateway in direct communication connection with the second sensor node by the second sensor node, so that the management server regulates and controls the intelligent building according to the received data. The low-delay node Internet of things and the communication method thereof for the intelligent building can effectively reduce the delay of Internet of things communication, so that data collected by the sensor nodes can be reported to the management server of the intelligent building in time.
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Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a functional structure diagram of a low-latency node internet of things for smart building applications according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a composition of an internet of things gateway of a low-latency node internet of things for smart building applications according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a sensor node of a low-latency node internet of things for smart building applications according to an embodiment of the present application;
fig. 4 is a flowchart of a communication method of a low-latency node internet of things for smart building applications according to an embodiment of the present application.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the related invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1, the functional structure diagram of the low-latency node internet of things for intelligent building applications in the embodiment of the present application is shown. As can be seen from fig. 1, the low-latency node internet of things for intelligent building applications in the embodiments of the present application includes:
the system comprises a management server 101, a plurality of internet of things gateways 102 (such as an internet of things gateway 1, an internet of things gateway 2, an internet of things gateway n and the like shown in the figure) which are in communication connection with the management server 101, and a plurality of sensor nodes 103 (such as a sensor node 21, a sensor node 2n and the like shown in the figure) which are in direct communication connection with each internet of things gateway 102. Since the plurality of sensor nodes 103 have the same function in the data transmission process and are different only in the type of the collected data, the function of the sensor node in the technical solution of the present application is described by taking one of the plurality of sensor nodes 103 (i.e. the current sensor node) as an example.
Specifically, for a current sensor node in the plurality of sensor nodes 103, the sensor node may be a sensor node 103 directly connected to any internet of things gateway 102 in communication, and the current sensor node is configured to collect data corresponding to its type and send the collected data to the management server 101 through the internet of things gateway 102 directly connected to the current sensor node in communication. In this embodiment, the current sensor node includes a temperature sensor node, a humidity sensor node, an illuminance sensor node, an air quality sensor node, and a noise sensor node, that is, the current sensor node may be any one of the temperature sensor node, the humidity sensor node, the illuminance sensor node, the air quality sensor node, and the noise sensor node, for example, if the current sensor node is a temperature sensor node, the acquired data is temperature data.
In general, the sensor nodes 103 are uniformly distributed in the intelligent building, and the internet of things gateways 102 are also uniformly distributed in the intelligent building, each internet of things gateway 102 has a certain wireless communication coverage range and covers a certain number of sensor nodes 103, and can be directly connected with the sensor nodes 103 in the coverage range in a communication manner. The plurality of internet of things gateways 102 collectively cover a flat area of the smart building.
The internet of things gateway 102 can support multi-path parallel communication with a plurality of sensor nodes 103 at the same time, but the number of parallel paths that can be supported by one internet of things gateway 102 is very limited compared with the number of sensor nodes 103 in an intelligent building, so the internet of things gateway 102 is generally in a full load state, and most of the sensor nodes 103 can establish connection with the internet of things gateway 102 and perform data transmission after waiting for a certain period of time. The sensor node 103 sends an access request to the internet of things gateway 102, and then waits for a response from the internet of things gateway 102, and the sensor node 103 is allowed to access (i.e. transmit data) only when the number of parallel paths of the internet of things gateway 102 is not in a full load state. Therefore, when other sensor nodes cannot access the internet of things gateway 102 covering the sensor node, data that needs to be reported to the management server 101 may be sent to the current sensor node, and in order to distinguish the other sensor nodes from the current sensor node, the technical solution of the present application is described by taking one of the other sensor nodes, that is, the first sensor node in the following, as an example. At this time, the current sensor node may be configured to receive data sent by the first sensor node, and send the received data to the management server through an internet of things gateway in direct communication connection with the current sensor node. In the process, the first sensor node may send a data transmission request to the current sensor node, after receiving the data transmission request, the current sensor node may send an access request to the internet of things gateway in direct communication connection with the current sensor node, and after obtaining a response of the internet of things gateway in direct communication connection with the current sensor node, send request passing information to the first sensor node, establish a connection channel with the first sensor node, receive data sent by the first sensor node and needing to be reported to the management server 101, and send the received data to the internet of things gateway in direct communication connection with the current sensor node.
Certainly, the internet of things gateway directly connected in communication with the current sensor node also has a full load state, so when the current sensor node needs to report data to the management server 101 and the internet of things gateway directly connected in communication with the current sensor node is in the full load state, at this time, the current sensor node is also used for sending the collected data and/or the received data to the second sensor node, and the second sensor node sends the collected data and/or the received data to the management server through the internet of things gateway directly connected in communication with the second sensor node, where the second sensor node is any sensor node different from the first sensor node. Similarly, the current sensor node may send a data transmission request to the second sensor node, after receiving the data transmission request, the second sensor node may send an access request to the internet of things gateway in direct communication with the second sensor node, and after obtaining a response of the internet of things gateway in direct communication with the second sensor node, send request passing information to the current sensor node, establish a connection channel with the current sensor node, receive data that needs to be reported to the management server 101 and sent by the current sensor node, and send the received data to the internet of things gateway in direct communication with the second sensor node.
After receiving the data reported by the current sensor node and/or the second sensor node, the management server 101 may regulate and control the intelligent building according to the received data. For example, if the temperature data collected by the temperature sensor is higher than a preset standard value or a preset standard threshold, the temperature control device at the corresponding position may be controlled so that the temperature at the position is reduced.
The low-delay node Internet of things applied to the intelligent building can effectively reduce the delay of Internet of things communication, so that data collected by the sensor nodes can be reported to a management server of the intelligent building in time.
As shown in fig. 2, the component structure of the gateway of the internet of things for the low-latency node internet of things for the intelligent building application in the embodiment of the present application is schematically illustrated. As can be seen from fig. 2, the internet of things gateway 102 in the embodiment of the present application may include:
an access request receiving module 1021, configured to receive an access request sent by a sensor node 103 in direct communication connection with the internet of things gateway 102, and respond to the corresponding sensor node.
Specifically, the internet of things gateway 102 can support multipath parallel communication with a plurality of sensor nodes 103 at the same time, but the number of parallel paths that can be supported by one internet of things gateway 102 is very limited compared with the number of sensor nodes 103 in an intelligent building, so the internet of things gateway 102 is generally in a full load state, and most of the sensor nodes 103 need to wait for a certain period of time to establish connection with the internet of things gateway 102 and perform data transmission. The sensor node 103 sends an access request to the internet of things gateway 102, and then waits for a response from the internet of things gateway 102, and the sensor node 103 is allowed to access (i.e. transmit data) only when the number of parallel paths of the internet of things gateway 102 is not in a full load state.
The caching module 1022 is configured to cache the received data sent by the sensor node in direct communication connection with the internet of things gateway.
Specifically, after the internet of things gateway receives the data sent by the sensor node 103, the received data is cached according to the sequence of the received data.
And a data forwarding module 1023, configured to forward the data cached in the caching module to the management server.
In this embodiment, the internet of things gateway 102 generally includes a plurality of access request receiving modules 1021 and a data forwarding module 1023, that is, the internet of things gateway 102 may receive data sent by a plurality of sensor nodes 103 at the same time, but only can be in communication connection with the management server 101 through the data forwarding module 1023, so that the caching module 1022 caches the received data according to the sequence of the received data after the internet of things gateway receives the data sent by the sensor nodes 103, and the data forwarding module 1023 sends the cached data to the management server 101 according to the caching sequence.
In addition, the internet of things gateway 102 in the embodiment of the present application further includes a wireless signal transmitting module 1024, configured to transmit a wireless signal to the preset range, so that the sensor node 103 in direct communication connection with the internet of things gateway 102 establishes communication connection with the internet of things gateway 102 through the wireless signal.
Fig. 3 is a schematic structural diagram of a sensor node of a low-latency node internet of things for smart building applications according to an embodiment of the present application. Taking the current sensor node in the above embodiment as an example, the current sensor node 103 in the embodiment of the present application may include:
and a data collecting module 1031, configured to collect data of corresponding types.
Specifically, the type of the data collected by the data collection module 1031 is the same as the type of the sensor node 103, for example, if the sensor node 103 is a temperature sensor node, the collected data is temperature data.
A data sending module 1032, configured to send data to the internet of things gateway 102 directly connected in communication with the current sensor node or the second sensor node.
Specifically, when the current sensor node needs to report data to the management server, the current sensor node may send an access request to the internet of things gateway in direct communication connection with the current sensor node, and then send the acquired data and/or the received data to the internet of things gateway in direct communication connection with the current sensor node after obtaining a response of the internet of things gateway in direct communication connection with the current sensor node.
Certainly, the internet of things gateway in direct communication connection with the current sensor node also has a full load state, so when the current sensor node needs to report data to the management server and the internet of things gateway in direct communication connection with the current sensor node is in the full load state, at this time, the current sensor node is also used for or sending the acquired data and/or the received data to the second sensor node, and the second sensor node sends the acquired data and/or the received data to the management server through the internet of things gateway in direct communication connection with the second sensor node.
A data receiving module 1033, configured to receive the data sent by the first sensor node.
A power module 1034 configured to supply power to the data acquisition module, the data transmission module, and the data reception module.
The low-delay node internet of things applied to the intelligent building in the embodiment of the application can achieve the technical effects similar to those of the embodiment, and the details are not repeated here.
Fig. 4 is a flowchart of a communication method of a low-latency node internet of things for smart building applications according to an embodiment of the present application. The communication method of the low-delay node internet of things for intelligent building application in the embodiment may include the following steps:
s401: determining allowable delay time T of current sensor node and probability threshold value P for establishing communication connection with gateway of Internet of things0。
S402: determining probability P of the current sensor node establishing communication connection with the previous n-hop Internet of things gatewayi(T), wherein i ═ 2, 3 … … n.
S403: probability P of establishing communication connection between the current sensor node and the previous n-hop Internet of things gatewayiAnd (T) accumulating to obtain the current probability P (T) of establishing communication connection with the gateway of the Internet of things.
S404: judging whether the value of the current probability P (T) is larger than the probability threshold value P0When the value of the current probability P (T) is larger than the probability threshold value P0And controlling the current sensor node and the n according to the value of the hop count nAnd establishing communication connection by the gateway of the Internet of things in the hop range.
The communication method of the low-delay node Internet of things for the intelligent building application is based on the low-delay node Internet of things for the intelligent building application of the embodiment. The sensor nodes can be directly connected with the gateway of the Internet of things, namely, one-hop connection is realized. One sensor node can also be connected to other sensor nodes (that is, other sensor nodes are used as transfer nodes), and connected to the gateway of the internet of things through the transfer of one-stage or multi-stage transfer nodes, that is, connected to the gateway of the internet of things through multi-hop. Meanwhile, the internet of things gateway can support the simultaneous multi-path parallel communication with a plurality of sensor nodes, but the number of parallel paths which can be supported by one internet of things gateway is very limited compared with the number of sensor nodes in an intelligent building. Therefore, the internet of things gateway is generally in a full load state, and most of the sensor nodes can establish connection with the internet of things gateway and perform data transmission after waiting for a certain time; the sensor node sends an access request to the Internet of things gateway, and then waits for the response of the Internet of things gateway; after receiving the response, the node establishes communication connection with the gateway of the Internet of things, and after the communication is completed, the node releases the communication connection for other sensor nodes to establish communication connection. This results in a relatively large delay in the communication of the internet of things.
Of course, besides being directly connected to the internet of things gateway through one hop, the sensor node may also be connected to one or more other internet of things gateways through a multi-hop relay node, and send an access request to the internet of things gateways connected after the multi-hop relay. The communication delay between the sensor node and the transfer node is small and can be basically ignored. Thus, the delay of sending out the data of the sensor node is mainly determined by the waiting time required for establishing a communication connection with a gateway of the internet of things.
Therefore, in the present embodiment, assuming that the expected delay time is T, the probability of establishing a communication connection with the i-hop internet of things gateway by one sensor node within the T time is denoted as Pi(T), where i is 2, 3 … …, it is clear that the longer the T time isThe higher the probability value, the shorter the T time the lower the probability value; thus, for a sensor node, communication connection with the gateways of the internet of things in the N-hop range is allowed, and the total probability of establishing communication connection with one of the gateways within the delay time T is as follows:
P(T)＝P1(T)+P2(T)+P3(T)...+Pn(T), wherein N is a positive integer less than N.
Obviously, the larger the value of n, the larger the number of gateways of the internet of things that the sensor node can establish communication connection, the more likely the delay is to be reduced.
Thus, the present invention sets the probability P for each sensor node0Setting a desired delay time T; the probability P (T) corresponding to the desired delay time T must be greater than P0Then when the probability P (T) is greater than P0And controlling the sensor node to establish communication connection with the Internet of things gateway within the n-hop range according to the final n value.
The communication method of the low-delay node Internet of things applied to the intelligent building can effectively reduce the delay of the communication of the Internet of things, so that the data collected by the sensor nodes can be reported to the management server of the intelligent building in time.
In addition, as an optional embodiment of the method of the present application, in the above embodiment, the method further includes:
when the value of the current probability P (T) is less than or equal to the probability threshold value P0Then, determining the probability P of the current sensor node establishing communication connection with the (n + 1) th hop Internet of things gatewayn+1(T)；
Comparing the current probability P (T) with the probability Pn+1(T) adding the current probabilities to generate a new current probability P (T) ', and determining whether the value of the new current probability P (T)' is greater than the probability threshold value P0If greater than the probability threshold P0And controlling the sensor node to establish communication connection with the gateway of the Internet of things in the hop range of n +1 according to the final value of n + 1.
Further, in some embodiments, further comprising:
determiningProbability P of communication connection between the current sensor node and the previous 1-hop Internet of things gateway1(T), judging the probability P1Whether the value of (T) is greater than the probability threshold P0That is, it is determined whether the internet of things gateway directly connected in communication with the current sensor node is in a full load state, and when the internet of things gateway directly connected in communication with the current sensor node is in the full load state, the internet of things gateway further determines whether the internet of things gateway is in the full load state according to the formula P (t) ═ P1(T)+P2(T)+P3(T)...+Pn(T) calculating the value of the current probability P (T).
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention herein disclosed is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the spirit of the invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (9)

1. A low-latency node Internet of things for intelligent building applications, comprising:
the system comprises a management server, a plurality of Internet of things gateways in communication connection with the management server, and a plurality of sensor nodes in direct communication connection with each Internet of things gateway;
for a current sensor node of the plurality of sensor nodes, the current sensor node is used for sending collected data to the management server through an internet of things gateway in direct communication connection with the current sensor node, or receiving data sent by a first sensor node, sending received data to the management server through the internet of things gateway in direct communication connection with the current sensor node, or sending collected data and/or received data to a second sensor node, and the second sensor node sends the collected data and/or the received data to the management serverData are sent to the management server through the Internet of things gateway in direct communication connection with the second sensor nodes, so that the management server regulates and controls the intelligent building according to the received data, and the probability P is set for each sensor node0Setting a desired delay time T; the probability P (T) corresponding to the desired delay time T is greater than P0And then, controlling the sensor node to establish communication connection with the internet of things gateway within the N-hop range according to the final N value, and allowing the sensor node to be in communication connection with the internet of things gateway within the N-hop range, wherein the total probability of establishing communication connection with one gateway within the delay time T is as follows:
P(T)＝P1(T)+P2(T)+P3(T)...+Pn(T)，
wherein N is a positive integer less than N, Pn(T) is the probability of establishing communication connection between the current sensor node and the previous n-hop Internet of things gateway;
when the value of the current probability P (T) is less than or equal to the probability threshold value P0Then, determining the probability P of the current sensor node establishing communication connection with the (n + 1) th hop Internet of things gatewayn+1(T)；
Comparing the current probability P (T) with the probability Pn+1(T) adding the current probabilities to generate a new current probability P (T) ', and determining whether the value of the new current probability P (T)' is greater than the probability threshold value P0。
2. The IOT of low latency nodes of claim 1, wherein the IOT gateway comprises:
the access request receiving module is used for receiving an access request sent by a sensor node in direct communication connection with the gateway of the Internet of things and responding to the corresponding sensor node;
the cache module is used for caching the received data sent by the sensor node in direct communication connection with the gateway of the Internet of things;
and the data forwarding module is used for forwarding the data cached in the caching module to the management server.
3. The IOT of low latency nodes of claim 2, wherein the cache module is specifically configured to cache received data according to a sequence of receiving data sent by sensor nodes in direct communication with the IOT gateway.
4. The IOT of low latency nodes of claim 3, wherein the IOT gateway further comprises:
and the wireless signal transmitting module is used for transmitting a wireless signal to the preset range so that the sensor node in direct communication connection with the Internet of things gateway establishes communication connection with the Internet of things gateway through the wireless signal.
5. The IOT of low latency nodes of claim 4, wherein the current sensor node comprises:
the data acquisition module is used for acquiring data of corresponding types;
the data sending module is used for sending data to the gateway of the internet of things or the second sensor node which is in direct communication connection with the current sensor node;
and the data receiving module is used for receiving the data sent by the first sensor node.
6. The IOT of low latency nodes of claim 5, wherein the current sensor node further comprises:
and the power supply module is used for supplying power to the data acquisition module, the data sending module and the data receiving module.
7. The Internet of things with low delay nodes as claimed in claim 6, wherein the sensor nodes comprise a temperature sensor node, a humidity sensor node, a light intensity sensor node, an air quality sensor node and a noise sensor node.
8. A communication method of a low-delay node Internet of things for intelligent building application is characterized by comprising the following steps:
determining allowable delay time T of current sensor node and probability threshold value P for establishing communication connection with gateway of Internet of things0；
Determining probability P of the current sensor node establishing communication connection with the previous n-hop Internet of things gatewayi(T), wherein i ═ 2, 3 … … n;
probability P of establishing communication connection between the current sensor node and the previous n-hop Internet of things gatewayi(T) accumulating to obtain the current probability P (T) of establishing communication connection with the gateway of the Internet of things;
judging whether the value of the current probability P (T) is larger than the probability threshold value P0When the value of the current probability P (T) is larger than the probability threshold value P0When the current sensor node is in communication connection with the gateway of the Internet of things in the n-hop range, controlling the current sensor node to establish communication connection with the gateway of the Internet of things in the n-hop range according to the value of the hop count n;
for one sensor node, allowing communication connection with the gateways of the internet of things in the range of N hops, the total probability of establishing communication connection with one gateway within the delay time T is as follows:
P(T)＝P1(T)+P2(T)+P3(T)…+Pn(T), wherein N is a positive integer less than N;
when the value of the current probability P (T) is less than or equal to the probability threshold value P0Then, determining the probability P of the current sensor node establishing communication connection with the (n + 1) th hop Internet of things gatewayn+1(T)；
Comparing the current probability P (T) with the probability Pn+1(T) adding the current probabilities to generate a new current probability P (T) ', and determining whether the value of the new current probability P (T)' is greater than the probability threshold value P0。
9. The method of claim 8, further comprising:
determining probability P of the current sensor node establishing communication connection with the first 1-hop Internet of things gateway1(T)，Probability of judgement P1Whether the value of (T) is greater than the probability threshold P0。
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Publication number Priority date Publication date Assignee Title
CN112710353B (en) * 2020-12-23 2022-10-21 龙海建设集团有限公司 Intelligent building monitoring system
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102004482A (en) * 2010-11-23 2011-04-06 上海领科实业发展有限公司 Internet of things technology-based automatic energy-saving control system and method for building
CN104952014A (en) * 2015-06-24 2015-09-30 苏州市职业大学 IoT (Internet of Things) experimental building management system
CN107343004A (en) * 2017-07-11 2017-11-10 山东建筑大学 A kind of inexpensive Internet of things node wireless networking system and control method
CN109688615A (en) * 2017-10-19 2019-04-26 富士通株式会社 Radio Link routing cost appraisal procedure, device and terminal device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102316550B (en) * 2011-10-10 2014-02-26 电子科技大学 Wireless terminal dynamic access method
CN104238510B (en) * 2014-09-03 2017-01-18 尚高科技有限公司 Intelligent building district management system based on Internet of things
CN105704230A (en) * 2016-03-16 2016-06-22 山东建筑大学 Intelligent building integration system and control method based on internet of things and cloud computing
US10524101B2 (en) * 2016-05-26 2019-12-31 Theo Kanter Distributed context-sharing networks
CN106850806B (en) * 2017-02-08 2020-06-02 招商华软信息有限公司 Data exchange method and device of intelligent building and energy efficiency monitoring system based on Internet of things
CN107547280B (en) * 2017-09-15 2021-02-02 山东建筑大学 Intelligent building system architecture of thing networking

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102004482A (en) * 2010-11-23 2011-04-06 上海领科实业发展有限公司 Internet of things technology-based automatic energy-saving control system and method for building
CN104952014A (en) * 2015-06-24 2015-09-30 苏州市职业大学 IoT (Internet of Things) experimental building management system
CN107343004A (en) * 2017-07-11 2017-11-10 山东建筑大学 A kind of inexpensive Internet of things node wireless networking system and control method
CN109688615A (en) * 2017-10-19 2019-04-26 富士通株式会社 Radio Link routing cost appraisal procedure, device and terminal device

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