CN109526096B - Assembled LED lamp - Google Patents

Assembled LED lamp Download PDF

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CN109526096B
CN109526096B CN201811211540.9A CN201811211540A CN109526096B CN 109526096 B CN109526096 B CN 109526096B CN 201811211540 A CN201811211540 A CN 201811211540A CN 109526096 B CN109526096 B CN 109526096B
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led lamp
cluster head
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CN109526096A (en
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王红叶
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NINGBO SUOLABI INDUSTRY AND TRADE Co.,Ltd.
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Ningbo Suolabi Industry And Trade Co ltd
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    • 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
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Selective Calling Equipment (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

The invention provides an assembled LED lamp, which is positioned in a set LED lamp monitoring area and comprises an LED lamp body, sensor nodes for acquiring environmental parameters and a brightness regulator for regulating the brightness of the LED lamp, wherein the sensor nodes and the brightness regulator are assembled on the LED lamp body; a single sink node and four relay nodes are arranged in the set LED lamp monitoring area; the sensor nodes of all the assembled LED lamps, the relay nodes and the sink nodes form a wireless sensor network, and environmental parameters collected by the sensor nodes are sent to the sink nodes by the relay nodes and then sent to the remote monitoring terminal by the sink nodes; the brightness adjuster is in communication connection with the remote monitoring terminal to adjust the brightness of the LED lamp according to the instruction sent by the remote monitoring terminal.

Description

Assembled LED lamp
Technical Field
The invention relates to the field of LED lamp monitoring, in particular to an assembled LED lamp.
Background
Currently, a plurality of LED lamps for illuminating a road are generally provided on a street. In the related art, the LED lamp is usually controlled in a time control mode, the time control mode takes time as the only basis for turning on and off, and the street lamp can only be turned on and off at the specified uniform moment no matter in any season and meteorological conditions, so that the energy conservation of the LED lamp cannot be realized; in addition, because the number of the LED lamps used for illuminating roads is large, a large amount of wiring is needed during installation, and once some LED lamps are failed, the detection and maintenance are quite difficult.
The wireless sensor network technology is one of the fastest developing information technologies in recent years, and is widely applied to places where wiring is not suitable and the wiring cost is high. The assembled LED lamp adopted by the invention does not need to be laid with cables, and if the whole LED lamp system is required to be controlled in real time, the monitoring and control by adopting a wireless sensor network is an effective way.
Disclosure of Invention
In order to solve the above problems, the present invention provides an assembled LED lamp.
The purpose of the invention is realized by adopting the following technical scheme:
the invention provides an assembled LED lamp, which comprises an LED lamp body, a sensor node for collecting environmental parameters and a brightness regulator for regulating the brightness of the LED lamp, wherein the sensor node and the brightness regulator are assembled on the LED lamp body;
the LED lamp monitoring area is divided into a plurality of square grid sub-areas by taking the sink node as an original point, the four relay nodes are deployed at the central positions of different square grid sub-areas, the distances between the four relay nodes and the sink node are the same, and the four relay nodes can be directly communicated with the sink node;
the sensor nodes of all the assembled LED lamps, the relay nodes and the sink nodes form a wireless sensor network, and environmental parameters collected by the sensor nodes are sent to the sink nodes by the relay nodes and then sent to the remote monitoring terminal by the sink nodes;
the brightness adjuster is in communication connection with the remote monitoring terminal to adjust the brightness of the LED lamp according to the instruction sent by the remote monitoring terminal.
The remote monitoring terminal analyzes and processes the environmental parameters after receiving the environmental parameters sent by the sink node, and sends a corresponding instruction to a brightness regulator on the LED lamp body where a certain sensor node is located when the environmental parameters corresponding to the sensor node do not meet a preset requirement so as to regulate the brightness of the LED lamp to a proper state.
In one implementation manner, the LED lamp body includes a plurality of groups of high-power high-brightness white LEDs, every three LEDs are connected in series to form a group, a zener diode is connected in parallel beside each LED, and the brightness adjuster adjusts the brightness of the assembled LED lamp by controlling the number of groups of LEDs turned on.
In an implementation manner, the sensor node includes a control chip, and an input end of the control chip is connected with a temperature signal sampling module and an illuminance signal sampling module respectively.
In a mode that can realize, the LED lamp body still includes photovoltaic cell, control chip's input still is connected with respectively and is used for gathering photovoltaic cell voltage signal's voltage sampling module, is used for gathering photovoltaic cell current signal's current sampling module.
The second aspect of the invention provides an LED lamp control system, which comprises the assembled LED lamp, a sink node, a relay node and a remote monitoring terminal.
Further, the LED lamp control system further comprises a user terminal in communication connection with the remote monitoring terminal, and the user terminal checks data by logging in the remote monitoring terminal.
The invention has the beneficial effects that: the assembled LED lamp can intelligently adjust the brightness according to the illumination change of the environment, so that the energy conservation of the LED lamp is realized; the wireless sensor network technology is used for collecting environmental parameters, a large amount of wiring is not needed, and centralized monitoring of the LED lamps in the whole area is achieved.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be obtained on the basis of the following drawings without inventive effort.
FIG. 1 is a block diagram of a schematic construction of a modular LED lamp according to an exemplary embodiment of the present invention;
FIG. 2 is a schematic block diagram of a data flow for implementing dimming of a modular LED lamp in accordance with an exemplary embodiment of the present invention;
fig. 3 is a block diagram schematically illustrating the structure of an LED lamp control system according to an exemplary embodiment of the present invention.
Reference numerals:
the LED lamp comprises an LED lamp body 1, a sensor node 2, a brightness regulator 3, an assembled LED lamp 4, a sink node 5, a relay node 6 and a remote monitoring terminal 7.
Detailed Description
The invention is further described with reference to the following examples.
Fig. 1 shows a block diagram of a structure of an assembled LED lamp according to an exemplary embodiment of the present invention. Fig. 2 shows a schematic block diagram of data flow for implementing dimming of a packaged LED lamp according to an exemplary embodiment of the present invention.
As shown in fig. 1 and fig. 2, in a first aspect of the present invention, an assembled LED lamp is provided, where the assembled LED lamp includes an LED lamp body 1, a sensor node 2 for collecting an environmental parameter, and a brightness adjuster 3 for adjusting the brightness of the LED lamp, where the sensor node 2 and the brightness adjuster 3 are assembled on the LED lamp body 1, and the environmental parameter includes the illuminance of the environment where the LED lamp is located;
a single sink node 5 and four relay nodes 6 are arranged in the set LED lamp monitoring area, the sink node 5 is used as an original point, the LED lamp monitoring area is divided into a plurality of square grid sub-areas, the four relay nodes 6 are deployed at the central positions of different square grid sub-areas, the distances between the four relay nodes 6 and the sink node 5 are the same, and the four relay nodes 6 can be directly communicated with the sink node 5;
the sensor nodes 2, the relay nodes 6 and the sink nodes 5 of all the assembled LED lamps form a wireless sensor network, environmental parameters collected by the sensor nodes 2 are sent to the sink nodes 5 through the relay nodes 6, and then are sent to the remote monitoring terminal 7 through the sink nodes 5;
the brightness adjuster 3 is in communication connection with the remote monitoring terminal 7 so as to adjust the brightness of the LED lamp according to the instruction sent by the remote monitoring terminal 7.
After receiving the environmental parameters sent by the sink node 5, the remote monitoring terminal 7 analyzes the environmental parameters, and when the environmental parameters corresponding to a certain sensor node 2 do not meet the preset requirements, sends a corresponding instruction to the brightness adjuster 3 on the LED lamp body 1 where the sensor node 2 is located, so as to adjust the brightness of the LED lamp to a proper state. Specifically, in one embodiment, the remote monitoring terminal 7 analyzes the illuminance of the environment where each LED lamp is located, and when the illuminance is smaller than a set first threshold value in the environment parameters correspondingly sent by any sensor node 2, sends a command of "adjust to brightest" to the brightness adjuster 3 on the LED lamp body 1 where the sensor node 2 is located; when the illuminance is between a set first threshold and a set second threshold, sending a command of 'turning to secondary lighting' to a brightness adjuster 3 on the LED lamp body 1 where the sensor node 2 is located; and when the illumination is between the set second threshold and the set third threshold, sending a command of 'adjusting to the lowest brightness' to the brightness adjuster 3 on the LED lamp body 1 where the sensor node 2 is located. The first threshold, the second threshold, and the third threshold may be set according to actual conditions.
In one embodiment, the "brightest up", "second brightest up" and "lowest brightness" commands may be used to adjust the brightness by adjusting the number of LEDs that are turned on. The instruction information may include information on the number of turned-on LEDs.
In one embodiment, the remote monitoring terminal 7 stores the identification information of each brightness adjuster 3 and sensor node 2, wherein the identification information of the brightness adjuster 3 and sensor node 2 on the same LED lamp body 1 correspond to each other.
In a mode that can realize, still install switch on the LED lamp body 1, brightness adjuster 3 be connected with switch to open and close according to remote monitoring terminal 7's instruction control switch.
In another realizable mode, the environmental parameters further include the temperature of the LED lamp, the LED lamp body 1 is further provided with a temperature controller, the remote monitoring terminal 7 sends an instruction to the temperature controller of the assembled LED lamp when the temperature value of the assembled LED lamp reaches the upper limit of the set temperature threshold, and the temperature controller closes the power switch after receiving the instruction, so that the power of the assembled LED lamp is turned off.
In an implementation manner, the LED lamp body 1 includes a plurality of groups of high-power high-brightness white LEDs, every three LEDs are connected in series to form a group, a zener diode is connected in parallel beside each LED, and the brightness adjuster 3 adjusts the brightness of the assembled LED lamp by controlling the number of groups of LEDs turned on.
In an implementation manner, the sensor node 2 includes a control chip, and an input end of the control chip is connected to a temperature signal sampling module and an illuminance signal sampling module, respectively.
In a mode that can realize, LED lamp body 1 still includes photovoltaic cell, control chip's input still is connected with respectively and is used for gathering photovoltaic cell voltage signal's voltage sampling module, is used for gathering photovoltaic cell current signal's current sampling module. Through setting up like this, managers can look over the operating condition of LED lamp power in real time on remote monitoring terminal 7 to can in time discover the abnormal conditions of LED lamp work according to current-voltage information, and then in time overhaul assembled LED lamp.
The assembled LED lamp of the embodiment of the invention can intelligently adjust the brightness according to the illumination change of the environment, thereby realizing the energy saving of the LED lamp; the wireless sensor network technology is used for collecting environmental parameters, a large amount of wiring is not needed, and centralized monitoring of the LED lamps in the whole area is achieved.
When a network is initialized, each sensor node 2 of the assembled LED lamp selects a plurality of cluster heads through clustering, and each sensor node 2 selects the cluster head closest to the sensor node 2 to join in a cluster; in the environmental parameter transmission stage, each sensor node 2 collects environmental parameters and sends the environmental parameters to a corresponding cluster head, the environmental parameters received by the cluster head are finally sent to one of the relay nodes 6, and then each relay node 6 transmits the received environmental parameters to the sink node 5.
In one embodiment, the sensor nodes 2 of the modular LED lamp are clustered based on the LEACH routing protocol. The sensor nodes 2 may also be clustered by other suitable clustering routing protocols.
In one embodiment, the communication distance of the cluster head is within a set period
Figure BDA0001832563480000041
The adjustment is carried out within the range of the adjustment,
Figure BDA0001832563480000042
for an adjustable minimum communication distance of the cluster head,
Figure BDA0001832563480000043
an adjustable maximum communication distance for the cluster head; the communication distance of the cluster head in the t-th period is as follows:
Figure BDA0001832563480000044
in the formula, Si(t) is the communication distance of the cluster head i in the t-th period, EiIs the current remaining energy of cluster head i, Ei0Is the initial energy of the cluster head i, EminIs a preset minimum energy value.
The communication distance adjusting formula of the cluster head is innovatively arranged in the embodiment, and the communication distance of the cluster head is adjusted according to the current residual energy of the cluster head, so that the communication range of the cluster head is limited, the energy consumption of the transmission environment parameters of the cluster head is reduced, the rapid failure of the cluster head due to insufficient energy is avoided, and the running stability of the wireless sensor network is further improved.
In one embodiment, the environment parameter received by the cluster head is finally sent to one of the relay nodes 6, specifically: if the distance between the cluster head and the relay node 6 closest to the cluster head does not exceed the current communication distance, the cluster head directly sends the environment parameters to the relay node 6 closest to the cluster head, otherwise, a cluster head with the largest weight is directly selected from neighbor cluster heads as a next hop, and the environment parameters are sent to the next hop, wherein the neighbor cluster heads are the rest cluster heads located in the cluster head communication range, and the calculation formula of the weight is as follows:
Figure BDA0001832563480000051
in the formula, QijWeight of the jth neighbor cluster head representing cluster head i, SjIs the current communication distance, S, of the jth neighbor cluster headkCurrent communication distance of kth neighbor cluster head of cluster head i, dijIs the distance between cluster head i and the jth neighbor cluster head, dikIs the distance between the cluster head i and the kth neighbor cluster head, niThe number of neighbor cluster heads of the cluster head i; f (S)j) To determine the value function, f (S) is performed when the communication range of the jth neighbor cluster head includes the relay node 6j) 1, otherwise f (S)j)＝0。
In this embodiment, the cluster head selects a suitable routing form according to the distance to the closest relay node 6, so as to send the environment parameter to the closest relay node 6, which is beneficial to optimally saving the energy cost for transmitting the environment parameter from the cluster head to the relay node 6; when the distance between the cluster head and the nearest relay node 6 exceeds the current communication distance, the cluster head selects one of the neighbor cluster heads with the largest weight as a next hop. In the embodiment, a calculation formula of the weight is innovatively set, and according to the calculation formula, a neighbor cluster head with higher probability of directly communicating with the relay node 6 has higher probability as a next hop. According to the embodiment, the energy consumption of multi-hop transmission of the environmental parameters to the relay node 6 can be reduced as much as possible, the communication cost of the assembled LED lamp in the aspect of environmental parameter collection can be saved, and the reliability of intelligent brightness adjustment of the assembled LED lamp is improved.
In one embodiment, the relay node 6 is movable, a cluster head set in direct communication with the relay node 6 is set to be Ω, the relay node 6 periodically monitors the energy of the cluster heads in the set Ω, and the energy potential of the cluster heads in the set Ω is calculated according to the following formula:
Figure BDA0001832563480000052
in the formula, PuTo set the energy potential of cluster heads u in omega, EuIs the current remaining energy of cluster head u, EuvThe current residual energy m of the v-th sensor node 2 in the cluster corresponding to the cluster head uuThe cluster head u corresponds to the number of sensor nodes 2 in the cluster, SuCommunication distance of cluster head u, ElIs the current remaining energy of the ith cluster head in the set omega, SOIs the communication distance of the relay node 6;
if cluster heads with energy potential force larger than 0 exist in the set omega, the sink node 5 moves a set distance towards the direction of the cluster head with the maximum energy potential force in the cluster heads with the energy potential force larger than 0, wherein the total distance moved by the relay node 6 cannot exceed a preset distance upper limit.
Since the cluster head near the relay node 6 needs to receive and forward the environmental parameters in the cluster and also needs to relay and forward the environmental parameters of other cluster heads, more energy needs to be consumed than other cluster heads, and thus the wireless sensor network is likely to generate an energy hole near the relay node 6. Based on the problem, the relay node 6 is arranged to be movable in the embodiment, and a calculation formula of energy potential force is innovatively defined, and when the energy potential force of a cluster head near the relay node 6 is greater than 0, the relay node 6 is moved to the direction of the cluster head with the largest energy potential force by a set distance, so that the cluster head with lower energy is forced to no longer undertake a relay forwarding task due to being too far away from the moved relay node 6. This embodiment is of value to the energy of balanced each cluster head, reduces energy cavity phenomenon, and then effectively prolongs the network live time, improves the stability that environmental parameter collected, ensures the intelligent regulation of assembled LED lamp luminance.
Fig. 3 shows a block diagram schematically illustrating the structure of an LED lamp control system according to an exemplary embodiment of the present invention. As shown in fig. 3, the second embodiment of the present invention further provides an LED lamp control system, which includes the assembled LED lamp 4, the aggregation node 5, the relay node 6, and the remote monitoring terminal 7.
Further, the LED lamp control system further comprises a user terminal in communication connection with the remote monitoring terminal 7, and the user terminal checks data by logging in the remote monitoring terminal 7.
The LED lamp control system can intelligently adjust the brightness of each assembled LED lamp according to the illumination change of the environment, and realize the energy saving of the LED lamps; the wireless sensor network technology is utilized to collect environmental parameters, a large amount of wiring is not needed, and the centralized monitoring of the LED lamps in the whole area is realized; the user terminal checks data by logging in the remote monitoring terminal 7, so that managers can know the conditions of all the assembled LED lamps in time.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims (9)

1. An assembled LED lamp is positioned in a set LED lamp monitoring area and is characterized by comprising an LED lamp body, a sensor node for acquiring environmental parameters and a brightness regulator for regulating the brightness of the LED lamp, wherein the sensor node and the brightness regulator are assembled on the LED lamp body;
the LED lamp monitoring area is divided into a plurality of square grid sub-areas by taking the sink node as an original point, the four relay nodes are deployed at the central positions of different square grid sub-areas, the distances between the four relay nodes and the sink node are the same, and the four relay nodes can be directly communicated with the sink node;
the sensor nodes of all the assembled LED lamps, the relay nodes and the sink nodes form a wireless sensor network, and environmental parameters collected by the sensor nodes are sent to the sink nodes by the relay nodes and then sent to the remote monitoring terminal by the sink nodes;
the brightness adjuster is in communication connection with the remote monitoring terminal so as to adjust the brightness of the LED lamp according to an instruction sent by the remote monitoring terminal;
each sensor node of the assembled LED lamp selects a plurality of cluster heads through clustering, and each sensor node selects the cluster head closest to the sensor node to join in a cluster; in the environmental parameter transmission stage, each sensor node collects environmental parameters and sends the environmental parameters to a corresponding cluster head, the environmental parameters received by the cluster heads are finally sent to one of the relay nodes, and then each relay node transmits the received environmental parameters to the sink node; the relay node is movable, a cluster head set which is directly communicated with the relay node is set to be omega, the relay node regularly monitors the energy of the cluster heads in the set omega, and the energy potential of the cluster heads in the set omega is calculated according to the following formula:
Figure FDA0002740297990000011
in the formula, PuTo set the energy potential of cluster heads u in omega, EuIs the current remaining energy of cluster head u, EuvThe current residual energy m of the v-th sensor node in the cluster corresponding to the cluster head uuThe cluster head u corresponds to the number of sensor nodes in the cluster, SuCommunication distance of cluster head u, ElIs the current remaining energy of the ith cluster head in the set omega, SOA communication distance of a relay node;
if cluster heads with energy potential force larger than 0 exist in the set omega, the sink node moves a set distance towards the direction of the cluster head with the maximum energy potential force in the cluster heads with the energy potential force larger than 0, wherein the total distance for moving the relay node cannot exceed a preset distance upper limit.
2. The assembled LED lamp as claimed in claim 1, wherein the LED lamp body comprises a plurality of groups of high-power high-brightness white LEDs, each group of three LEDs are connected in series, a voltage regulator diode is connected in parallel beside each LED, and the brightness of the assembled LED lamp is adjusted by the brightness adjuster by controlling the number of groups of the LEDs which are turned on.
3. The assembled LED lamp of claim 2, wherein the sensor node comprises a control chip, and a temperature signal sampling module and an illumination signal sampling module are respectively connected to an input end of the control chip.
4. The assembled LED lamp according to claim 3, wherein the LED lamp body further comprises a photovoltaic cell, and the input end of the control chip is further connected with a voltage sampling module for collecting a voltage signal of the photovoltaic cell and a current sampling module for collecting a current signal of the photovoltaic cell respectively.
5. The modular LED lamp of claim 1, wherein the communication distance of the cluster head is at a set period
Figure FDA0002740297990000021
The adjustment is carried out within the range of the adjustment,
Figure FDA0002740297990000022
for an adjustable minimum communication distance of the cluster head,
Figure FDA0002740297990000023
an adjustable maximum communication distance for the cluster head; the communication distance of the cluster head in the t-th period is as follows:
Figure FDA0002740297990000024
in the formula, Si(t) is the communication distance of the cluster head i in the t-th period, EiIs the current remaining energy of cluster head i, Ei0Is the initial energy of the cluster head i, EminIs a preset minimum energy value.
6. The assembled LED lamp of claim 5, wherein the environmental parameters received by the cluster head are ultimately sent to one of the relay nodes, specifically: if the distance between the cluster head and the relay node closest to the cluster head does not exceed the current communication distance, the cluster head directly sends the environment parameters to the relay node closest to the cluster head, otherwise, the cluster head directly selects one of the neighbor cluster heads with the largest weight as a next hop, and sends the environment parameters to the next hop, wherein the neighbor cluster heads are the rest cluster heads positioned in the cluster head communication range.
7. The assembled LED lamp of claim 6, wherein the weight is calculated by the formula:
Figure FDA0002740297990000025
in the formula, QijJ-th neighbor cluster head representing cluster head iWeight of, SjIs the current communication distance, S, of the jth neighbor cluster headkCurrent communication distance of kth neighbor cluster head of cluster head i, dijIs the distance between cluster head i and the jth neighbor cluster head, dikIs the distance between the cluster head i and the kth neighbor cluster head, niThe number of neighbor cluster heads of the cluster head i; f (S)j) To judge the value function, f (S) when the communication range of the jth neighbor cluster head contains the relay nodej) 1, otherwise f (S)j)＝0。
8. An LED lamp control system, characterized by comprising the assembled LED lamp according to any one of claims 1 to 7, a sink node, a relay node, and a remote monitoring terminal.
9. An LED lamp control system according to claim 8, further comprising a user terminal communicatively connected to the remote monitoring terminal, said user terminal viewing data by logging on to the remote monitoring terminal.
CN201811211540.9A 2018-10-17 2018-10-17 Assembled LED lamp Active CN109526096B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010206724A (en) * 2009-03-05 2010-09-16 Oki Electric Ind Co Ltd Power saving type radio communication apparatus and radio communication apparatus
CN103957629A (en) * 2014-04-21 2014-07-30 华南理工大学 Cloud control intelligent illumination system based on zigbee
CN104853398A (en) * 2015-06-01 2015-08-19 苏州博联科技有限公司 Route optimization method for tree shape wireless sensor network

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010206724A (en) * 2009-03-05 2010-09-16 Oki Electric Ind Co Ltd Power saving type radio communication apparatus and radio communication apparatus
CN103957629A (en) * 2014-04-21 2014-07-30 华南理工大学 Cloud control intelligent illumination system based on zigbee
CN104853398A (en) * 2015-06-01 2015-08-19 苏州博联科技有限公司 Route optimization method for tree shape wireless sensor network

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