CN110602729B - Wisdom street lamp control system based on dynamic frequency point is adjusted - Google Patents
Wisdom street lamp control system based on dynamic frequency point is adjusted Download PDFInfo
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- CN110602729B CN110602729B CN201910831522.9A CN201910831522A CN110602729B CN 110602729 B CN110602729 B CN 110602729B CN 201910831522 A CN201910831522 A CN 201910831522A CN 110602729 B CN110602729 B CN 110602729B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The invention relates to an intelligent street lamp control system based on dynamic frequency point adjustment. The system comprises a plurality of street lamps, wherein each street lamp is provided with a controller, and the controller is connected with a communication module. Under the control of a communication control subsystem, the communication modules communicate with each other. The communication control subsystem comprises a pre-configuration strategy, a frequency point regulation strategy and a preset frequency point configuration table. By utilizing the intelligent street lamp control system based on dynamic frequency point adjustment, the communication frequency points used in the system can be automatically and dynamically adjusted, so that the reliability of data transmission is ensured, the transmission efficiency is not influenced, and the phenomenon of communication packet loss caused by interference is avoided.
Description
Technical Field
The invention relates to a municipal street lamp system, in particular to an intelligent street lamp control system based on dynamic frequency point adjustment.
Background
A communication system is a generic term for a technical system for performing an information transmission process. Modern communication systems are implemented primarily by means of propagation of electromagnetic waves in free space, known as wireless communication systems, or transmission mechanisms in a guided medium, known as wired communication systems. In a communication system, wireless communication is generally realized by setting different frequency bands, and with the development of intelligent street lamps, information needs to be transmitted between the intelligent street lamps, and the safety and the transmission efficiency of the transmitted information need to be considered. The related art communication system has difficulty in ensuring the above function.
Disclosure of Invention
In view of this, the present invention provides an intelligent street lamp control system based on dynamic frequency point adjustment.
To solve the above technical problems, an aspect of the present invention provides
By utilizing the intelligent street lamp control system based on dynamic frequency point adjustment, the communication frequency points used in the system can be automatically and dynamically adjusted, so that the reliability of data transmission is ensured, the transmission efficiency is not influenced, and the phenomenon of communication packet loss caused by interference is avoided.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The novel features believed characteristic of the invention are set forth with particularity in the appended claims. A better understanding of the features and advantages of the present invention will be obtained by reference to the following detailed description that sets forth illustrative embodiments, in which the principles of the invention are utilized, and the accompanying drawings of which:
fig. 1 is a schematic diagram of a system architecture of an intelligent street lamp control system based on dynamic frequency point adjustment according to an exemplary embodiment of the present invention;
fig. 2 is a flow chart of a communication strategy of the intelligent street lamp control system based on dynamic frequency point adjustment according to an exemplary embodiment of the invention;
fig. 3 is a communication topology diagram of an intelligent street lamp control system based on dynamic frequency point adjustment according to an exemplary embodiment of the invention.
Reference numerals: 1. a street lamp; 11. a controller; 111. a communication module; s1, pre-configuring a strategy; s11, a data generation step; s12, frequency point configuration; s2, frequency point adjusting strategy; s21, frequency point obtaining; s22, frequency point updating; d1, frequency point configuration table.
Detailed Description
While preferred embodiments of the present invention have been shown and described herein, it will be obvious to those skilled in the art that such embodiments are provided by way of example only. Numerous variations, changes, and substitutions will now occur to those skilled in the art without departing from the invention. It should be understood that various alternatives to the embodiments of the invention described herein may be employed in practicing the invention.
Referring to fig. 1, an intelligent streetlamp control system based on dynamic frequency point adjustment according to an exemplary embodiment of the present invention includes a plurality of streetlamps 1. The street lamp 1 may be arranged beside a road. Each of the street lamps 1 may be provided with a controller 11. A communication module 111 is connected to each controller 11. The communication modules 111 communicate with each other under the control of a communication control subsystem. In some examples, the communication control subsystem may include a pre-configuration policy S1, a frequency point adjustment policy S2, and a preset frequency point configuration table D1.
In some examples, the communication module 111 may have an initial state. When the communication module 111 is operating in the initial state, the communication control subsystem implements the preconfigured policy S1. The pre-configuration policy S may include 1 a data generation step S11 and a frequency point configuration step S12. For example, when the installation of the communication module 111 is just completed, a basic communication network needs to be established, which may be implemented by the pre-configuration policy S1.
In some examples, the data generating step S11 may include controlling any communication module 111 to generate configuration data, and sending the configuration data to each other communication module 111 through an initial preset communication frequency point by using the communication module 111. The configuration data may include configuration verification information and configuration frequency point information. The configured frequency point information may include a frequency point configuration value, and the frequency point configuration value is obtained from the frequency point configuration table D1. And setting the communication frequency point in the initial state as A, and obtaining the corresponding authority after verifying the configuration verification information. That is, only the communication modules 111 can perform communication, and the configured frequency point information is the configured frequency point obtained from the frequency point information table.
In some examples, when the communication module 111 receives the configuration data, the frequency point configuring step S12 is performed. The frequency point configuring step S12 includes: and after the configuration verification information is verified early, configuring the communication receiving frequency point and the communication sending frequency point of the current communication module 111 according to the configuration frequency point information. The communication control subsystem is configured to execute the frequency point configuration step S12 of the pre-configuration S1 until the communication receiving frequency points of all the communication modules 111 are the same, and the communication sending frequency points of all the communication modules 111 are also the same. At this time, the configuration of the frequency points is realized, so that all the communication modules 111 can communicate with each other through the configured frequency points, and the initial networking of the street lamp/communication modules is completed.
In some examples, the frequency point adjustment policy S2 may include a frequency point obtaining step S21 and a frequency point updating step S22. The frequency point adjustment strategy S2 may be configured with feedback conditions (to be described in detail later). Each frequency point in the frequency point configuration table D1 has at least one index pointer corresponding thereto, and the index pointer points to another frequency point in the frequency point configuration table D1. And respectively defining the frequency point corresponding to the index pointer and the frequency point pointed by the index pointer as a main frequency point and a slave frequency point. In the exemplary embodiment of the present invention, the difference between any slave frequency point and the master frequency point is greater than the preset frequency point difference, so as to ensure that the communications on the master frequency point and the slave frequency points do not interfere with each other. When the feedback condition is triggered, the frequency point obtaining step S21 is executed. The purpose of the frequency point adjustment strategy S2 is to realize coping with various interference situations (for example, coping with interference which affects transmission efficiency or transmission safety)
In some examples, the frequency point obtaining step S21 may include generating, from the frequency point configuration table D1, adjustment frequency point information according to a frequency point pointed by an index pointer corresponding to a current frequency point, and generating adjustment data according to the adjustment frequency point information. The adjustment data further includes adjustment verification information. The corresponding communication module 111 transmits the adjustment data to the other communication modules 111. All communication frequency points in the frequency point configuration table D1 are pre-selected and pre-written in the communication module 111. When the frequency points are replaced, the index pointer mechanism is established, so that the frequency points with larger frequency difference value can be selected instead of the frequency points with similar frequencies. Therefore, when communication interference occurs, the problem of communication interference cannot be solved by changing the working frequency to a frequency point close to the current working frequency, and therefore, the interfered working frequency needs to be changed to a frequency point with a larger frequency difference, so that data transmission and safety improvement are realized. In some examples, the frequency bin difference may be between 20MHz and 100 MHz.
In some examples, when the communication module 111 receives the adjustment data, the frequency point updating step S22 is performed. The frequency point updating step S22 includes: and after the adjustment check information is verified, configuring a communication receiving frequency point and/or a communication sending frequency point of the current communication module 111 according to the adjustment frequency point information. The frequency point can be updated through the frequency point updating step S22. Each communication module 111 receives the frequency point to be updated, thereby implementing dynamic frequency point update in the system.
In some embodiments, each communication module 111 may provide two communication channels: a common communication channel and a slave communication channel. That is, the communication module can receive information on two frequency points simultaneously. When receiving the updated information of the frequency point, the original communication frequency point can be switched to a slave communication channel for use, and the updated frequency point is used as a common communication channel. The communication channel can be reserved for a certain time, and a buffering time is provided for the frequency point update of the communication network. During the buffering time, the slave communication channel can receive and transmit data.
In different embodiments, the feedback condition may be different. For example, in an exemplary embodiment, the feedback condition may include a time condition. The time condition is configured to: and when the time of using one frequency point exceeds a preset reference time value, judging that the feedback condition is triggered. The time condition is set for reducing data transmission quantity and reducing the occupation of check data as much as possible, and if one frequency point is used for a long time, the safety is not facilitated, so the time condition is set for controlling the use time of the frequency point. The reference time value may be set to 24 hours or 15 days.
In another exemplary embodiment, the feedback condition includes a frequency condition, and the frequency condition is configured to determine that the feedback condition is triggered when the frequency of using a frequency point by any one of the communication modules 111 exceeds a preset reference frequency value. And under one frequency point, if the number of data transmission times is excessive, the data security is not favorable, so the use times of a certain frequency point is limited by setting the frequency point communication times. For example, if a communication module 111 transmits 500 times of data, the frequency point updating step S22 is performed.
In yet another exemplary embodiment, the communication module 111 generates feedback information to reflect success or failure of data reception. If the communication module 111 as the sending end does not receive the feedback information within the preset waiting time, the communication module 111 retransmits the data. In this embodiment, the feedback condition may include a retransmission condition. The retransmission condition is configured to: when the number of times that the communication module 111 retransmits the data exceeds a preset retransmission number value, it is determined that the feedback condition is triggered. Retransmission is a common behavior in a communication system, and generally, if a received communication module 111 cannot successfully receive data due to packet loss, data interference, and the like, retransmission is required. The preset retransmission number value may be set to 3 times. If the retransmission times exceed 3 times, the packet loss situation is judged to occur, frequency point updating is needed, and communication is carried out by using the updated frequency point. Because the frequency values among the frequency points have larger difference, the frequency points are not interfered by the same interference signal after being replaced, thereby reducing the possibility of packet loss.
In some examples, the communication module 111 includes a master receiver and a slave receiver, where the master receiver is configured to receive a signal corresponding to a current frequency point, and the slave receiver is configured to receive a signal corresponding to a preset waiting frequency point, where the waiting frequency point is a slave frequency point of the current frequency point. The feedback condition comprises a delay condition, and when the receiving time of the data from the receiver exceeds a preset first receiving time, the feedback condition is judged to be triggered. Through the arrangement of the two receivers, the data corresponding to the frequency point can be obtained before the frequency point is updated, and the safe and reliable communication effect is achieved.
In some examples, the controller 11 may further include a signal noise detector for detecting the interference signal. And when the strength of the detected interference signal is greater than the first signal strength value, the controller acquires the frequency point where the interference signal is located and generates a corresponding interference frequency range. In this example, the feedback condition may include an avoidance condition, and when the frequency point corresponding to the communication module 111 falls within the interference frequency range, it is determined that the feedback condition is triggered.
In some examples, the communication module 111 may include a cellular communication module to enable data communication between a plurality of street lights. For example, the cellular communication module may be a 4G or 5G communication module. The communication module 111 may also include a bluetooth communication module.
In some exemplary embodiments of the present invention, the plurality of street lamps 1 may be divided into several regional groups according to physical locations. The street lamps 1 in each zone group may include a dual-channel street lamp 1 and a single-channel street lamp 1. The communication module 111 of the dual-channel street lamp 1 is provided with an intra-group communication channel and an extra-group communication channel, and the communication module 111 of the single-channel street lamp 1 is provided with an intra-group communication channel. The communication modules of a plurality of street lamps in the same regional group realize wireless communication by utilizing the communication channels in the group; and wireless communication is realized between the communication modules of the street lamps in different regional groups by utilizing the communication channel outside the group. In some examples, the frequency at which the intra-group communication channels operate may be adjustable, while the frequency at which the extra-group communication channels operate may be fixed.
In some examples, the street lamps 1 in the same regional group may independently execute the frequency point adjustment policy S2, so that when the feedback condition is triggered, the frequency points at which the intra-group communication channels in all the communication modules 111 in the same regional group operate are the same. By such setting, the frequency point adjustment policy S2 may be global frequency point adjustment or local frequency point adjustment, and may be specifically set according to different conditions of feedback conditions. As shown in fig. 3, frequency points for transmitting data and receiving data of each communication module may be different, and after dynamic adjustment, one network may have five frequency points of X1, X2, X3, X4, and X5. The safety of the adjusting mode is higher, and the data transmission efficiency is guaranteed.
While preferred embodiments of the present invention have been shown and described herein, it will be obvious to those skilled in the art that such embodiments are provided by way of example only. Numerous modifications, changes, and substitutions will now occur to those skilled in the art without departing from the invention. It should be understood that various alternatives to the embodiments of the invention described herein may be employed in practicing the invention. It is intended that the following claims define the scope of the invention and that methods and structures within the scope of these claims and their equivalents be covered thereby.
Claims (3)
1. An intelligent street lamp control system based on dynamic frequency point adjustment comprises a plurality of street lamps, wherein each street lamp is provided with a controller,
each controller is connected with a communication module, and the communication modules realize mutual communication under the control of a communication control subsystem;
the communication control subsystem executes a pre-configuration strategy when the communication module works in the initial state, wherein the pre-configuration strategy comprises a data generation step and a frequency point configuration step; wherein the data generating step comprises: controlling any communication module to generate configuration data, and sending the configuration data to each other communication module through an initial preset communication frequency point by using the communication module, wherein the configuration data comprises configuration check information and configuration frequency point information, the configuration frequency point information comprises a frequency point configuration value, and the frequency point configuration value is obtained from a preset frequency point configuration table;
when the communication module receives the configuration data, executing the frequency point configuration step; the frequency point configuration step comprises: after the configuration check information is verified, configuring a communication receiving frequency point and a communication sending frequency point of the current communication module according to the configuration frequency point information; the communication control subsystem is configured to execute the frequency point configuration step of the pre-configuration strategy until the communication receiving frequency points of all the communication modules are the same and the communication sending frequency points are also the same;
the frequency point adjusting strategy comprises a frequency point obtaining step and a frequency point updating step; the frequency point adjusting strategy is configured with a feedback condition; each frequency point in the frequency point configuration table is provided with at least one index pointer corresponding to the frequency point, and the index pointer points to another frequency point in the frequency point configuration table; respectively defining the frequency point corresponding to the index pointer and the frequency point pointed by the index pointer as a main frequency point and a slave frequency point, wherein the difference between any slave frequency point and the main frequency point is greater than the preset frequency point difference; when the feedback condition is triggered, executing the frequency point acquisition step;
wherein, the frequency point obtaining step comprises: generating adjusting frequency point information according to the frequency point pointed by the index pointer corresponding to the current frequency point in the frequency point configuration table, and generating adjusting data according to the adjusting frequency point information; the adjusting data also comprises adjusting and checking information, and the corresponding communication module sends the adjusting data to other communication modules; and is
When the communication module receives the adjusting data, the frequency point updating step is executed; the frequency point updating step comprises the following steps: after the adjustment check information is verified, configuring the communication receiving frequency point and/or the communication sending frequency point of the current communication module according to the adjustment frequency point information;
wherein the feedback condition comprises a time condition; when the time of using a frequency point by any communication module exceeds a preset reference time value, judging that the feedback condition is triggered;
wherein the feedback condition comprises a number condition; when the frequency of using a frequency point by any communication module exceeds a preset reference frequency value, judging that the feedback condition is triggered;
if a certain communication module as a sending end does not receive a feedback message within a preset waiting time, the communication module resends data; and is
Wherein the feedback condition comprises a retransmission condition; when the number of times of retransmitting data by a certain communication module exceeds a preset retransmission number value, judging that the feedback condition is triggered;
the communication module comprises a main receiver and a slave receiver, wherein the main receiver is used for receiving signals corresponding to the main frequency points, and the slave receiver is used for receiving signals corresponding to the slave frequency points; and is
Wherein the feedback condition comprises a delay condition; when the receiving time of the slave receiver exceeds a preset first receiving time, judging that the feedback condition is triggered;
wherein the controller further comprises a signal noise detector for detecting an interference signal; when the intensity of the detected interference signal is greater than the first signal intensity value, the controller acquires a frequency point where the interference signal is located and generates a corresponding interference frequency range; wherein the feedback condition comprises an avoidance condition; when the working frequency point of the corresponding communication module falls into the interference frequency range, judging that the feedback condition is triggered;
wherein the communication module comprises a cellular communication module;
the street lamps are divided into a plurality of regional groups according to physical positions, and the street lamps in each regional group comprise double-channel street lamps and single-channel street lamps; the communication module of the double-channel street lamp is provided with an intra-group communication channel and an extra-group communication channel, and the communication module of the single-channel street lamp is provided with an intra-group communication channel; the communication modules of a plurality of street lamps in the same regional group realize wireless communication by utilizing the communication channels in the group; by utilizing the out-of-group communication channel, wireless communication is realized among the communication modules of the street lamps in different regional groups; the frequency point of the communication channel in the group is adjustable, while the frequency point of the communication channel outside the group is fixed.
2. The intelligent street lamp control system based on dynamic frequency point adjustment according to claim 1, wherein the frequency point adjustment strategy is independently executed by street lamps in the same regional group, so that when the feedback condition is triggered, the frequency points of the intra-group communication channels of the communication modules of all street lamps in the same regional group are the same.
3. The intelligent street lamp control system based on dynamic frequency point adjustment of claim 1, wherein the frequency point difference is between 20MHZ-100 MHZ.
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| KR100921215B1 (en) * | 2007-10-05 | 2009-10-09 | 숭실대학교산학협력단 | Channel Selection Mechanism in Multi-Channel Multi-Radio Ad hoc Networks |
| CN104581813B (en) * | 2015-01-28 | 2017-12-12 | 山东建筑大学 | A kind of wlan system dynamic channel assignment method |
| CN106678661A (en) * | 2016-12-06 | 2017-05-17 | 上海斐讯数据通信技术有限公司 | Streetlamp and technical security and protection system |
| US10051542B1 (en) * | 2017-10-18 | 2018-08-14 | Sprint Spectrum L.P. | Dynamic configuration of transmission mode responsive to a UE that is engaged in a voice call handing over from lower frequency to higher frequency where it is raining |
| CN107920335B (en) * | 2017-10-30 | 2020-12-11 | 湘潭大学 | Networking and communication method of intelligent street lamp |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203851324U (en) * | 2014-03-12 | 2014-09-24 | 湖南中能力华新能源技术有限公司 | An intelligent street lamp green illumination management and control system based on Internet of Things technology |
| CN108495433A (en) * | 2018-03-28 | 2018-09-04 | 青岛尚升智能科技有限公司 | One kind is based on NBIOT and the two-channel controller for road lamp of power line carrier and method |
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