CN103533702A - Intelligent space art decorative light system based on internet of things - Google Patents

Abstract

Provided is an intelligent space art decorative light system based on an internet of things. The system comprises a group of wireless decorative light nodes and a state control subsystem. Each wireless decorative light node comprises a power supply subsystem, a sensor subsystem, a communication subsystem, a decorative light control subsystem and a group of decorative lights. The sensor subsystem is connected with the communication subsystem so as to sense an external signal to startup operation of the whole system. The communication subsystem is connected with the decorative light control subsystem so as to receive a system operation startup signal sent by the sensor subsystem. The decorative light control subsystem converts a control signal of the communication subsystem into the control signal which can drive the art decorative lights. The state control subsystem is used for controlling the wireless decorative light nodes in a remote way, and is responsible for controlling transition of states of the wireless decorative light nodes so as to control operation of the decorative lights. Each light node of the system is interconnected and intercommunicated with each other via a radio wave mode, and computation is performed separately by each node so that a large computing amount is dissolved, and a unique light effect is realized.

Description

Intelligent space artistic lamp-ornaments system based on Internet of Things

Technical field

The invention belongs to lamp decoration control field, in light control mode, promoted information interaction degree, relate to wireless sensor network, distributed computing method and node Kinematic Positioning Techniques And.

Background technology

Traditional LED lamp decoration mainly contains two kinds of control modes: its control mode is roughly divided into two kinds: a kind of is timing controlled, for example common flash color lamp in red-letter day; Another kind is inductive control, for example the sense light of corridor for throwing light on.Time-controlled light fixture is controlled the flicker effect of lamp decoration by the program of finishing in advance, be applicable to the lamp group that a large amount of lamp decorations form, but the centralized control mode that adopts wired connection between lamp and lamp, the quantity of lamp can not arbitrarily increase and decrease, once break down, is also difficult for trimming; The light fixture of inductive control is controlled the light on and off of lamp by the variation of induction surrounding environment, but control mode is single and do not carry out information interaction with other light fixture network consistings.

Along with scientific and technological progress and the raising of people's living standard, the Function and form that the demand constantly rising makes light fixture is also carrying out by " light fixture " to " lamp decoration " again to the great variety of " intelligent lamp decoration ".And the humanized artistry service that " intelligent lamp decoration " provides has further embodied the theory of " people-oriented for science and technology ".

Summary of the invention

Main purpose of the present invention is the technology of wireless sensor network that incorporated in lamp decoration control mode, solve traditional control method flexibility low, the problem that information interaction degree is low, a set of combine with wireless sensor network, intelligent space artistic lamp-ornaments system based on Internet of Things is provided, each Lantern Festival point in lamp decoration system is interconnected by the form of radio wave, by each node being distributed in wireless sensor network, separately carry out computing, thereby decompose huge amount of calculation, realize unique lighting effects.And for intelligent domestic system provides technical foundation in advance, built the intelligent domestic system blank on Internet of Things basis.

Intelligent space artistic lamp-ornaments system based on Internet of Things provided by the invention comprises one group of wireless lamp node and state control subsystem, and each wireless lamp node specifically comprises supplied for electronic system, sensor subsystem, communication subsystem, lamp decoration control subsystem and one group of lamp decoration;

Supplied for electronic system: comprise low-power consumption supply module and lamp decoration supply module, low-power consumption supply module is for the power supply of sensor subsystem, communication subsystem and the lamp decoration control subsystem of wireless lamp node, and lamp decoration supply module is for the power supply of one group of lamp decoration of wireless lamp node;

For flexibility and the extensibility of better embodiment system, during design, the power supply of wireless sensor network node (communication subsystem in wireless lamp node, sensor subsystem and lamp decoration control subsystem) is separated with the power supply of artistic lamp-ornaments node.Consider that wireless sensor network node and lamp decoration node supply current differ greatly, wireless sensor node only needs several electric currents of pacifying of receiving when dormancy, electric current during work only has several milliamperes, peak value during wireless transmission also only has tens milliamperes, and each wireless lamp node can flow through the electric current of 150 milliamperes of left and right when LED standard-sized sheet.So unsuitable centrally connected power supply.In addition, once the electrical quantity of lamp decoration node changes, the electric power system of this part can be changed separately, does not need wireless sensor node to redesign, and is convenient to system extension.

Sensor subsystem: be connected with communication subsystem, be mainly used in the signal in the perception external world, and by the outer signals input communication subsystem perceiving, to start the work of whole system;

The design of sensor subsystem will be considered reliability and energy saving simultaneously." native system selects a Passive Infrared Sensor being comprised of Fresnel Lenses, pyroelectric infrared sensor and one piece of BISS0001 chip as the node in the perception external world; " be the passive infrared module in Fig. 2.Fresnel Lenses can be divided into search coverage several area pellucidas and dark space, and the heat that the motive objects physical efficiency that makes to enter search coverage changes on detector with the form of variations in temperature is released infrared signal.BISS0001 is a kind of efficient infrared sensor signal processor; by Digital Analog Hybrid Circuits such as operational amplifier, voltage comparator, state controller, delay controller and the regular devices of blocking time, formed; for the treatment of the signal on pyroelectric infrared sensor, and communicate with processor.

Communication subsystem: be connected the system works enabling signal that receiving sensor subsystem sends with lamp decoration control subsystem; Communication subsystem is carried out computing on the one hand, and the control signal that computing is formed inputs to lamp decoration control subsystem; Launch signal of communication on the one hand, mutual with the communication subsystem in other nodes, realize the interactive intercommunication between wireless lamp node.

Lamp decoration system adopts the CC2530 chip of being produced by Texas Instruments's design.CC2530 is the second generation ZigBee chip that is operated in 2.4GHz frequency range, it integrates a high-performance 2.4GHz DSSS (direct sequence spread spectrum) radio-frequency (RF) transceiver core and small and exquisite technical grade 8051 controllers, and can support Zigbee protocol from hardware.The feature of this chip is its extremely low power dissipation, power voltage supply is only 2V-3.6V, and the standby current that interrupts allowing is 0.4 μ A, and transmitter is 24mA in accepting state power consumption, emission state power consumption is 29mA, is well suited for for adopting battery powered wireless sensor network node.In addition, this chip also has three Timer/Counter, randomizer and hardware interrupts, consider agreement support, power consumption, volume, with the aspects such as coordinating of algorithm, this chip can be competent at the demand of native system completely.

Lamp decoration control subsystem: be connected with communication subsystem, the control signal of communication subsystem universal I/O port is converted into the control signal that can drive artistic lamp-ornaments.

For the artistic effect of lamp decoration is brought into play incisively and vividly, suitable light control algolithm and effectively reliably hardware are very necessary.Lamp decoration control subsystem (being the lamp decoration driver module in Fig. 2) is comprised of one group of photoelectric switch (AQW214S chip), current amplifier and lamp decoration.The distributed type assemblies algorithm designing for lamp decoration has been introduced the concept of colony intelligence (SwarmIntelligence), in order to analog modulation group's light variation effect.So-called colony intelligence, utilize exactly individual simple intelligence to realize the high intelligence of colony, the route search technical ability of flock of birds or the shoal of fish for example, the lamp decoration group that wireless sensor network builds just can simulated animal colony interchange and the mode of thinking, finally simulate and be similar to the graceful flight of flock of birds or the flexibly poly-loose effect of the shoal of fish, form a kind of visual experience of shock.

State control subsystem: this subsystem is independent of wireless lamp node, for remote-control radio lamp decoration node, and the responsible conversion of controlling these wireless lamp node states, to control lamp decoration work.

Minimum for lamp decoration system capacity is consumed, be provided with state control subsystem.State control subsystem consists of state remote controller, and the design of this part will be considered two aspect requirements, and the one, the status command that state control subsystem is sent will guarantee that each the wireless lamp node in system can receive as far as possible; The 2nd, wireless lamp node is received after state control subsystem is given an order and will be fed back to some extent.

Advantage of the present invention and good effect:

The present invention, by changing the centralized control mode of traditional lamp decoration, adopts novel distributed control mode, based on wireless sensor network, has built a set of intelligent space artistic lamp-ornaments system.In this system, each Lantern Festival point interconnects by the form of radio wave, separately carries out computing, thereby decompose huge amount of calculation by each node being distributed in wireless sensor network, realizes unique lighting effects.

Distributed computing method of the present invention can be thought independently each lamp decoration node, and forms lamp decoration group with other lamp decoration node communications, has formed the Trinitarian interactive system of people-lamp-environment, brings brand-new visual experience.The humanized artistry service that " the intelligent lamp decoration " that the present invention builds provides has further embodied the theory of " people-oriented for science and technology ".Meanwhile, embodied the great variety from " lamp decoration " to " intelligent lamp decoration ", had a good application prospect.

Accompanying drawing explanation

Fig. 1 is that intelligent space artistic lamp-ornaments system forms schematic diagram.

Fig. 2 is wireless lamp node hardware basic structure block diagram.

Fig. 3 is wireless lamp node electrical schematic diagram.

Fig. 4 is wireless communication module circuit theory diagrams.

Embodiment:

Embodiment 1

As shown in Figure 1, the intelligent space artistic lamp-ornaments system based on Internet of Things comprises one group of wireless lamp node and state control subsystem.Each wireless lamp node specifically comprises supplied for electronic system, sensor subsystem, communication subsystem, lamp decoration control subsystem and one group of lamp decoration (see figure 2).Supplied for electronic system: comprise low-power consumption supply module and lamp decoration supply module, low-power consumption supply module is for the power supply of sensor subsystem, communication subsystem and the lamp decoration control subsystem of wireless lamp node, and lamp decoration supply module is for the power supply of one group of lamp decoration of wireless lamp node.

Intelligent space artistic lamp-ornaments system is comprised of one group of wireless lamp node, numerous lamp decoration node constituent connection sensing networks, between lamp decoration node, pass through IEEE802.15.4 agreement UNICOM, carry out data interaction, become a lamp decoration group, by internodal Kinematic Positioning Techniques And, realizing information interchange and self-perception, is also the basis of design light control algolithm.Part lamp decoration node has been mounted infrared sensor, dealing that can the extraneous visitor of perception by these transducers, thus form the harmonious interaction in people and lamp group rings border.

In order to facilitate laying and the expansion of system, each lamp decoration node adopts powered battery, the increase of isolated node with delete the impact that can not be connected up.In order to reduce the electrical source consumption of wireless lamp node, extend the service time of system, system has dormancy and work two states.Node in resting state, LED lamp will disconnect with power supply, and radio transmission is in silent status simultaneously.And in running order node, the power supply of LED lamp, in controllable state, can receive and transmitting information simultaneously.

Building of the hardware platform of wireless lamp node

Hardware basic structure as shown in Figure 2: each wireless lamp unit comprises 1 wireless sensor network node (being communication subsystem, sensor subsystem and the lamp decoration control subsystem in wireless lamp node) and 3 artistic lamp-ornaments nodes.Wireless sensor network node volume is very little, by low-power consumption supply module, powers, and is encapsulated in node box together with battery, and lamp decoration node is connected with node box by Thin cable.In order to realize the requirement of modularized design, high scalability, according to systemic-function, wireless sensor network node module is designed to three parts, is respectively wireless communication module, Passive Infrared Sensor module and artistic lamp-ornaments control module, is packaged in the lump in plastics node box.Infrared detection module is responsible for surveying pedestrian's situation around, the algorithm that artistic lamp-ornaments control module is responsible for processing the result of detection of infrared detection module and is realized system, and wireless communication module is realized and being intercomed mutually with other lamp decoration node, and control algolithm is implemented.

Wireless sensor network node structure: wireless sensor network node is mainly carried antenna, extended out whip antenna and power filter network, reset circuit and radio frequency resonant network form by paster crystal oscillator, the crystal oscillator of 1 piece of 32.768KHz, the plate of 1 piece of CC2530 chip, 1 piece of 32MHz.

1. the design of clock crystal oscillator

The clock crystal oscillator of wireless sensor network node has adopted two reference design, has added the paster crystal oscillator of 1 piece of 32MHz and the crystal oscillator of 1 piece of 32.768KHz.The crystal oscillator of 32MHz is for providing high-frequency clock benchmark under central processor unit full speed operation state, and to reach high performance requirements, 32.768KHz crystal oscillator provides the clock reference of low speed for the operating state of central processing unit low speed power saving.

2. the design of antenna

The antenna of wireless sensor network node adopt plate carry antenna add extend out whip antenna two-antenna scheme to increase flexibility.The advantage that pcb board carries antenna is that cost is low, increases hardly the cost of hardware, and shortcoming is that performance is low, and the pcb board area occupying may be very large.The advantage of whip antenna is that performance is fine, and shortcoming is that cost is high, size is large, in some specific application, is difficult to dispose.So we are not needing long-distance transmissions by the dual-antenna system of design, when embodiment node is small and exquisite, adopt plate to carry antenna; When needs long-distance transmissions, when insensitive to node size, adopt whip antenna.

Pcb board carries the antenna that antenna adopts " F " shape, approximate omnidirectional antenna, and antenna gain is 1.1dbi, and whip antenna adopts foldable form, and antenna gain is 2dbi, omnidirectional antenna.

Artistic lamp-ornaments group Topology Structure Design

The feature of intelligence artistic lamp-ornaments system is: there is no Centroid, the status of all lamp decorations unit in equality, removes any existing lamp decoration unit or add new lamp decoration unit can not affect the general function of system.Therefore when the lamp decoration cell node of design native system, the suitable function by telegon, router and terminal node combines, and has both guaranteed function, has increased again the length of one's sleep, is applicable to battery powered situation.

In order to be applicable to these requirements, system is done Zstack agreement to revise, and adopts the two-level network structure of telegon, router.

In artistic lamp-ornaments network, have two kinds of addresses, a kind of is the MAC Address of 64, is globally unique, and this address when not setting up ZigBee-network layer, is used MAC layer to communicate for lamp decoration node; Another address is that the ，Gai address, ZigBee-network address of 16 is unique in lamp decoration network, the addressing for the lamp decoration node of network internal when the network layer communication.After first lamp decoration node powers on, during as communication channel around scanning, do not find other lamp decoration nodes, he can be configured to oneself telegon lamp decoration node, completes netinit.Once network is set up, this telegon lamp decoration node has just become common router lamp decoration node.Other lamp decoration node just can add this network as router node and asks first node distribution network short address and preserve.So far, router lamp decoration node not only can also can utilize network short address to carry out communicating by letter of network layer and application layer with telegon lamp decoration node by MAC Address to telegon lamp decoration node transmitting data bag, and router lamp decoration node has successfully added network.Afterwards, whenever there being new lamp decoration node to power on, all oneself can be configured to router lamp decoration node, according to process above, add one by one in lamp decoration network.Now, just form tree-shaped cluster network, thereby can utilize the routing algorithm in Zstack to carry out point-to-point or broadcast communication.The communication letter that native system adopts can be divided into two kinds of modes, is respectively unicast and broadcasting transmitting.

The realization of the control algolithm of artistic lamp-ornaments

1. kinematic Positioning Algorithm

Generally in two dimensional surface, the distance between known each node, the coordinate (x, y) of a unknown node can be calculated by the coordinate of three or three above known node.We are by x ₀and y ₀be defined as the two-dimensional coordinate of the unknown node 0 that is about to estimate, x _iand y _ithe two-dimensional coordinate of known node i, i=1,2,3 ... N, N is the sum of known coordinate node.

Can obtain the distance D between 2 thus _i0meet formula below:

$D_{i0}=\sqrt{{(x_i-x_0)}^2+{(y_i-y_0)}^2}---\left(3\right)$

By formula (3), be can be derived from:

-x _i ²-y _i ²=(x ₀ ²+y ₀ ²)+x ₀(-2x _i)+y ₀(-2y _i)-D _i0 ²

For the individual such equation of k (k>=3), can be with the mode cancellation (x subtracting each other ₀ ²+ y ₀ ²) this, for example subtract each other and can obtain with k formula:

-x _i ²-y _i ²+x _k ²+y _k ²=2x ₀(x _k-x _i)+2y ₀(y _k-y _i)+(D _ik ²-D _i0 ²)

Can obtain altogether k-1 equation, these equations can turn to following matrix form:

Y=Xb (4), wherein

$X=\left[\begin{array}{ccc}2(x_k-x_1)& 2(y_k-y_1)& {D_{k0}}^2-{{\mathrm{<figure-callout\; id="1"\; label="D\; k"\; filenames="HDA0000292009790000021.png"\; state="\{\{state\}\}">D</figure-callout>}}_k}^2\\ 2(x_k-x_2)& 2(y_k-y_2)& {D_{k0}}^2-{{\mathrm{<figure-callout\; id="2"\; label="D\; k"\; filenames="51907DEST\_PATH\_HDA0000420776300000011.png,HDA0000292009790000021.png"\; state="\{\{state\}\}">D</figure-callout>}}_k}^2\\ .& .& .\\ .& .& .\\ .& .& .\\ 2(x_k-x_{k-1})& 2(y_k-y_{k-1})& {D_{k0}}^2-{D_{k(k-1)}}^2\end{array}\right]$

$y=\left[\begin{array}{c}{{-x}_1}^2-{{\mathrm{<figure-callout\; id="1"\; label="y"\; filenames="HDA0000292009790000021.png"\; state="\{\{state\}\}">y</figure-callout>}}_1}^2+{x_k}^2+{y_k}^2\\ -{x_2}^2-{{\mathrm{<figure-callout\; id="2"\; label="y"\; filenames="51907DEST\_PATH\_HDA0000420776300000011.png,HDA0000292009790000021.png"\; state="\{\{state\}\}">y</figure-callout>}}_2}^2+{x_k}^2+{y_k}^2\\ .\\ .\\ .\\ -{x_{k-1}}^2-{y_{k-1}}^2+{x_k}^2+{{\mathrm{<figure-callout\; id="2"\; label="y\; k"\; filenames="51907DEST\_PATH\_HDA0000420776300000011.png,HDA0000292009790000021.png"\; state="\{\{state\}\}">y</figure-callout>}}_k}^2\end{array}\right]$

$b=\left[\begin{array}{c}{x}_0\\ y_0\\ 1\end{array}\right]$

Equation (4) can obtain by matrixing:

b=(X ^TX) ^-1X ^Ty

Can try to achieve the coordinate figure (x of unknown node 0 ₀, y ₀).All the other unknown node can use the same method and try to achieve.

When calculating the coordinate time of node in three dimensions, only the number of the node of known coordinate need be increased to four or more, above formula is slightly made an amendment.

The positioning function adding in lamp decoration system designs the basis of light control algolithm after being, the colony intelligence light control algolithm that next part will be mentioned will be used the coordinate information calculating.

2. light control algolithm

The Distributed Design of intelligence lamp decoration makes the layout of lamp decoration flexible and changeable, and the selection of control algolithm simultaneously has also obtained very large expansion.Intelligence artistic lamp-ornaments system will be introduced the concept of colony intelligence (Swarm Intelligence), design the colony intelligence light control algolithm of a uniqueness.

" group " is defined as the structure set of certain interactive tissue or intelligent body Agent, group's individuality can be ant, can be that flying bird can be also swimming fish, their common point is exactly between individual behavior and global behavior, to exist certain to contact closely: individual behavior is being arranged group's behavior, and group's behavior is also guiding individual behavior simultaneously.Ant group for example, ant carries out information interaction by release and other ants of pheromone, thereby finds the optimal path of search of food, thisly from environment, gathers information and just can simulate lamp group with the behavior of Peer approach.Passive infrared detector in lamp group is collected after the information of people's activity from environment, signal can be passed to lamp decoration node, node is according to the coordinate of self and predefined weighted value can oneself be made direction and rate signal carries out alternately with other nodes again, node formulates according to the data of self and the information feedback receiving the route of optimizing again, finally simulate and be similar to the graceful flight of flock of birds or the flexibly poly-loose effect of the shoal of fish, form a kind of visual experience of novel shock.

After wireless network platform has been built, the design of algorithm has very large extending space, just attempts an example here.

3. the PWM artistic lamp-ornaments modulation system of variable duty ratio

What the illuminating device in lamp decoration system adopted is white high-brightness LED lamp.

When service area, the substantially proportional routine relation of the luminous intensity of LED lamp and forward current, electric current is larger, and luminous intensity is stronger.The mode of the light modulation that LED drive circuit is conventional can be divided into two kinds: simulation light modulation and PWM light modulation.From the voltage-current characteristic of LED, can find out, in service area, the minor variations of forward voltage can cause the great variety of electric current, thereby causes the great variety of brightness.Current/voltage universal relation is:

$I_F=I_S(e^{\frac{V_F}{\mathrm{KT}}}-1)$

I wherein _sfor saturation conduction electric current, I _sfor forward voltage, I _ffor forward current.

And large quantity research shows: when the operating current of LED lamp reach rated current 70%～80% after, continue to increase electric current, the brightness of LED lamp can't continue to strengthen, most of energy all can be converted into heat energy, accelerates the life consumption of LED lamp.

Therefore, with the electric current of the continuous control LED of simulation light modulation, there is defect.PWM dimming mode is that the break-make by repetitive control LED electric current within the unit interval regulates luminosity, because human eye has visual persistence effect, general switching frequency during higher than 100Hz stroboscopic be just difficult for having been discovered by human eye.

Less radio-frequency propagation model

The CC2530 chip that native system is selected is supported RSSI localization method completely.Increase along with nodal distance, node receives that the RSSI value that another node sends signal can reduce thereupon, and both meet certain functional relation, and under varying environment, parameter in function also can change, and given below is a kind of conventional electromagnetic wave path loss model:

$P_r\left(d\right)=P_r\left(d_0\right)-\mathrm{\&eta;}10\log \left(\frac{d}{d_0}\right)+X_{\mathrm{\&sigma;}}---\left(1\right)$

Wherein, P _r(d) be the function of acknowledge(ment) signal intensity and distance, unit is dB; d ₀it is reference distance; D is actual distance; η is path loss index, shows the speed that path loss increases with distance, and it depends on specific communication environments; X _σthe shadowing factor of Shi YidBWei unit, relevant with the loss of obstacle.Suppose to adopt n independent sample to build multivariate regression models, available matrix equation formula below replaces formula (1)

p=Gβ （2）

P in formula, G and β be respectively:

$p=\left[\begin{array}{c}{P}_r\left(d_1\right)-P_r\left(d_0\right)\\ P_r\left(d_2\right)-P_r\left(d_0\right)\\ .\\ .\\ .\\ P_r\left(d_n\right)-P_r\left(d_0\right)\end{array}\right]$

$G=\left[\begin{array}{cc}-10\log \left(\frac{d_1}{d_0}\right)& 1\\ -10\log \left(\frac{d_2}{d_0}\right)& 1\\ .& .\\ .& .\\ .& .\\ -10\log \left(\frac{d_n}{d_0}\right)& 1\end{array}\right]$

$\mathrm{\&beta;}=\left[\begin{array}{c}\mathrm{\&eta;}\\ X_{\mathrm{\&sigma;}}\end{array}\right]$

Formula (2) can obtain by matrixing:

β=(G ^TG) ^-1G ^Tp

Can obtain parameter η and X _σ, node just can have been calculated range information by the RSSI intensitometer of receiving.

The design of lamp decoration drive control module

Drive control module can be divided into four parts: expansion interface district, photoelectric switch district, control switch district, power supply and LED interface area.

1. expansion interface district

In order to consider the autgmentability of node, during system, adopt modular design method.The hardware designs of simple function at one independently on circuit board, so native system by the independent design of CC2530 chip on a circuit board, as core board.Draw expansion interface to driving on control board, the double contact pin by normal pitch 2.54mm between core board and driving expansion board is connected.

2. photoelectric switch district

Artistic lamp-ornaments control module is connected with lamp decoration by one group of photoelectric switch (AQW214S chip), Main Function has two: the one, realize the isolation of little electric current and the large electric current of lamp decoration of control section, the power supply of control section and the power supply of lamp decoration separately, can be played the effect of protective circuit like this; The 2nd, realize the effect that electric current amplifies, realize the elementary amplification to secondary current.In addition, opening time and the turn-off time of photoelectric switch (AQW214S chip) are all very little, can not affect PWM light modulated power output.The typical opening time is 0.65 millisecond, and the turn-off time is 0.08 millisecond.

3. control switch district

Control button in control module has three, is respectively closing switch S0, Test Switchboard S1 and starting switch S2.Closing switch S0: automatically enter running status after system powers on, realize the transform effect of lamp decoration according to predefined lamp decoration control algolithm.In order to reach the object of saving electric energy, be provided with closing switch.When lamp and sensor node are in running status, press the closing switch of remote controller, remote controller will be broadcasted the order of " shutdown system ".All LED1 that receive the node of this order glimmer 5 times according to the speed of 1 second, then enter resting state, close each LED lamp, stop information request to external world.When Nodes is in resting state, " shutdown command " that remote controller is sent do not respond.

Position-sensing switch S1: for the Kinematic Positioning between XM.The node of receiving this signal enters positioning states, in the time of to the order that " starts location " of node broadcasts around, coordinate signal in collection space be until can calculate the coordinate of self, self coordinate broadcasted away again and make three LED lamps all with the speed flicker of 100 milliseconds 10 times after computing finishes.

Starting switch S2: in order to be that node in resting state and positioning states enters running status, be provided with starting switch.When lamp and sensor node are in resting state or positioning states, press the starting switch of remote controller, remote controller will be broadcasted " starter node " order.The LED lamp of all nodes that receive this order, according to the speed fast blink of 50ms 20 times, enters normal operating condition subsequently.When Nodes is in running status, " test node " order that remote controller is sent does not respond.

4. power supply and LED interface area

Each control board externally has 4 ports, is connected with No. 1 buzzer with 3 paths of LEDs lamps, and be respectively P1, P2, P3 and P4.Wherein P1 port connects LED lamp 1, P2 port and connects that LED3, P3 port connect buzzer, P4 port meets LED4.The high brightness white LED that native system adopts, sharp blue light-emitting diode is made.The forward cut-in voltage of this light-emitting diode is higher than general-purpose diode, is about 1～2.5V, and reverse breakdown voltage is lower than general-purpose diode, about 5V left and right.When forward current reaches 1mA left and right, start luminously, luminous intensity is approximate to be directly proportional to operating current; But when operating current reaches certain numerical value, it is saturated that luminous intensity is tending towards gradually, becomes non-linear relation with operating current.Light-emitting diode forward operating current is 10～20mA, and maximum forward operating current is 30～50mA.In native system, by pwm pulse width modulated, LED is carried out to light modulation, in specific embodiment 4, describe in detail.

Claims (1)

1. the intelligent space artistic lamp-ornaments system based on Internet of Things, is characterized in that this system comprises one group of wireless lamp node and state control subsystem;

Each wireless lamp node specifically comprises supplied for electronic system, sensor subsystem, communication subsystem, lamp decoration control subsystem and one group of lamp decoration;

Supplied for electronic system: comprise low-power consumption supply module and lamp decoration supply module, low-power consumption supply module is for the power supply of sensor subsystem, communication subsystem and the lamp decoration control subsystem of wireless lamp node, and lamp decoration supply module is for the power supply of one group of lamp decoration of wireless lamp node;

Sensor subsystem: be connected with communication subsystem, be mainly used in the signal in the perception external world, and by the outer signals input communication subsystem perceiving, to start the work of whole system;

Communication subsystem: be connected the system works enabling signal that receiving sensor subsystem sends with lamp decoration control subsystem; Communication subsystem is carried out computing on the one hand, and the control signal that computing is formed inputs to lamp decoration control subsystem; Launch signal of communication on the one hand, mutual with the communication subsystem in other nodes, realize the interactive intercommunication between wireless lamp node;

Lamp decoration control subsystem: be connected with communication subsystem, the control signal of communication subsystem universal I/O port is converted into the control signal that can drive artistic lamp-ornaments;

State control subsystem: this subsystem is independent of wireless lamp node, for remote-control radio lamp decoration node, and the responsible conversion of controlling these wireless lamp node states, to control lamp decoration work.

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