CN101938868A - Wireless sensor network based light controller - Google Patents
Wireless sensor network based light controller Download PDFInfo
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- CN101938868A CN101938868A CN2009100123725A CN200910012372A CN101938868A CN 101938868 A CN101938868 A CN 101938868A CN 2009100123725 A CN2009100123725 A CN 2009100123725A CN 200910012372 A CN200910012372 A CN 200910012372A CN 101938868 A CN101938868 A CN 101938868A
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Abstract
The invention relates to a light control technology and a wireless sensor network technology, in particular to a wireless sensor network based light controller. The light controller is arranged in a wireless sensor network comprising an upper computer, a network controller and a router, wherein the upper computer is communicated with the light controller through a network controller; the light controller comprises a control module, a sensor module and a control output module; the control module is used for running a control policy and taking charge of the communication with other wireless equipment; the sensor module is used for acquiring luminance and people activity information within the range of the sensor module; and the control output module is used for controlling the on-off of a lamp. The invention is suitable for the energy saving and the reformation of large buildings and can be used for automatically controlling the on-off of the lamp according to the environmental luminance and the people information and reducing the running energy consumption of an illuminating system, and meanwhile, because the wireless sensor network technology is adopted, a large quantity of wires can be saved, thus the system construction cost is reduced.
Description
Technical field
The present invention relates to wireless sensor network technology and lighting control technology, is a kind of lamp dimmer based on wireless sensor network specifically.
Background technology
Along with the global energy problem becomes increasingly conspicuous and China science and technology economy progressively develops, building energy conservation becomes the importance of building a conservation-minded society.Concrete measure and developing direction that the building energy conservation of establishing according to the Ministry of Construction requires, energy conservation starts in China comprehensively, implements.Can reduce architectural electricity lighting energy standard, improve the energy utilization rate of architectural electricity illumination, be the important step in the energy-saving design in construction.Yet in office building, phenomenon ubiquities such as altar lamp not only waste energy, and have also shortened the useful life of equipment such as light fixture to a great extent, cause the increase of building operation cost.
Current building automation system self needs a large amount of wirings in wired mode, and very inconvenience is installed by system, has increased the installation cost of system simultaneously.In the system that adopts the wire communication mode, most of transducers are connected to by cable and monitor and control system, by wired communication protocol, carry out work as ModBus, LonTalk or DeviceNet transducer is integrated in system.And in the existing wired network, build the wiring of automation engineering and the total system cost that spends possibly up to 80% is installed.In addition, in case cable installs, rewiring, its cost and time all will spend much.
Wireless sensor network technology is rapidly developed in recent years, the general communication that adopts multi-hop (multi-hop), equity (peer to peer), have characteristics such as autonomous networking, network size are variable, unattended operation, can reduce node energy consumption by dormancy mechanism simultaneously.
Combining with wireless sensor network technology and lighting control technique can be realized the automatic control of light fixture easily, are easy to realize the Long-distance Control of illuminator simultaneously.Compare with the building automatic product that adopts the wired network communication technology, the attractive spot of wireless solution is the flexibility of mounting arrangements, cheap mounting cost and the mobility when building automation system rearranged.In building automation system, adopt wireless solution, can solve the network-in-dialing problem that wired mode is difficult for realization quickly and easily.But this programme is not also reported at present.
Summary of the invention
The purpose of this invention is to provide a kind of lamp dimmer based on wireless sensor network, it combines wireless sensor network technology and lighting control technology, realizes the automatic control and the Long-distance Control of illuminator.
To achieve these goals, technical solution of the present invention is:
Be installed in the wireless sensor network that comprises host computer, network controller formation; Wherein, host computer is communicated by letter with lamp dimmer by network controller; Described lamp dimmer structure comprises: control module, there is control program, and be used to move control strategy, communicate by letter with host computer by network controller; Sensor assembly links to each other with control module, is used to gather ambient light illumination and personnel activity's information; The control output module, input links to each other with control module, and output is connected to light fixture by switch element, is used to control the switch of light fixture;
Wherein, described control module has A/D conversion, radio-frequency receiving-transmitting, input and output, the timing function of turning off the light;
Also comprise router in the described wireless sensor network, described control module is also communicated by letter with host computer by router in the wireless sensor network and network controller;
Wherein, described control program flow process is as follows: control module is in wait state, divides three the tunnel to receive control command or control information then; One the tunnel receives the controlled in wireless instruction, if turn off the light instruction and when light fixture is in opening, light fixture is carried out the action of turning off the light; Be that turn on light instruction and light fixture is in closed condition else if, light fixture is carried out the turn on light action and the timer zero clearing of will turning off the light; The current time is judged on another road, if exceed timing, illustrating does not have personnel in this zone, when light fixture is in opening, light fixture is carried out the action of turning off the light; Last road receives the personnel activity's information in pickup area, collect personnel activity's information after, receive the illuminance information that collects again, and adopt the principle of Schmidt trigger to determine current illuminance state; If illuminance is inadequate, control module is carried out the action of turning on light to light fixture; No matter carry out after the above action current which kind of state that is in of light fixture, when the light fixture state variation, the state that light fixture is current reports to host computer by wireless network, otherwise returns wait state;
Described sensor assembly is made up of illuminance sensor and human body detection sensor, and wherein, the input of illuminance sensor provides power supply by switch for illuminance sensor by control module, and the illuminance sensor output links to each other with control module; The human body detection sensor input is gathered personnel activity's information, and output links to each other with control module; Described illuminance sensor adopts the connected mode of photo resistance and conventional, electric-resistance series connection dividing potential drop, and the dividing potential drop node links to each other with control module, and control module is determined the illuminance of current environment by this partial pressure value; Described human body detection sensor input adopts heat to release infrared probe;
Each switch element of described control output module connects a lighting loop; The switch element that is adopted is a relay; Wherein, the relay of control output module employing can be solid-state relay, common electrical magnetic relay or magnetic latching relay.
The present invention has following advantage:
1. remote operation.Can by the long-range set environment parameter of PC control software (as: when begin to calculate for illuminance not enough/at dark between, when calculate between illuminance abundance/at day) and host computer Long-distance Control illuminator.
2. the wireless sensor network mounting arrangements is flexible.Reduce a large amount of house wiring, saved installation cost, simultaneously can dispersed placement equipment, the installation of lamp dimmer ground is relatively independent, thereby system movability is strong, and can upgrade network repeatedly, is easy to network and equipment are safeguarded.
3. can realize automation control.Can carry out centralized and unified control to the illuminator of disperseing by PC control software, control lamp dimmer switch light fixture is set, save a large amount of manpowers by wireless instructions or timer.
4. energy savings.Set by reasonably lamp dimmer being carried out parameter (as: timing setting of turning off the light of lamp dimmer be 5 minutes then turn off the light automatically), the supply of control lamp dimmer power supply, increased the useful life of lamp dimmer, effectively control has reduced that altar lamp brings uses electric consumption, energy savings.
Description of drawings
Fig. 1 is the structured flowchart of the embodiment of the invention 1.
Fig. 2 is the control program flow chart that control module has among Fig. 1.
Fig. 3 is the structured flowchart of the embodiment of the invention 2.
Embodiment
Below in conjunction with drawings and Examples the present invention is described in further detail.
Embodiment 1
As shown in Figure 1, the present invention is based on the lamp dimmer of wireless sensor network, be installed in the wireless sensor network that comprises host computer 10, network controller 9 formations, wherein, host computer 10 is communicated by letter with lamp dimmer by network controller 9; Described lamp dimmer structure comprises:
-control module 2, present embodiment adopt microcontroller (to adopt chip: CC2430F128), have control program in the microcontroller, communicate by letter with host computer 10 by network controller 9;
-sensor assembly links to each other with control module 2, is used for testing environment brightness and personal information;
-control output module 7, input links to each other with control module 2, and output is connected to light fixture 8 by switch element, is used to control the switch of light fixture 8.
Functions such as described control module 2 has A/D conversion, radio-frequency receiving-transmitting, input and output, the timing of turning off the light.
As shown in Figure 2, described control program flow process is as follows:
The control module 2 of lamp dimmer of the present invention is at first carried out initialize routine after powering on.In initialization procedure, except finishing registers necessary, input/output port initialization, also comprise the process that realizes adding network.After initialize routine executed, control module 2 was in wait state, divided three the tunnel to receive control command or control information then:
One the tunnel receives the controlled in wireless instruction, if turn off the light instruction when light fixture 8 is in opening, and the timer zero clearing of will turning off the light, 2 pairs of light fixtures of control module 8 are carried out the action of turning off the light; Be that turn on light instruction and light fixture 8 is in closed condition else if, 2 pairs of light fixtures of control module 8 are carried out the action of turning on light;
The current time is judged on another road, if the timer of turning off the light exceeds timing, illustrating does not have personnel in this zone, and when light fixture 8 was in opening, 2 pairs of light fixtures of control module 8 were carried out the action of turning off the light;
Personnel activity's information in the sensor assembly institute overlay area that control module 2 timing receiving sensor modules collect; After collecting personnel activity's information, gather illuminance information by control module 2 receiving sensor modules again, and adopt the principle of Schmidt trigger to determine current illuminance state; If illuminance is inadequate, 2 pairs of light fixtures of control module 8 are carried out the action of turning on light; No matter carry out after the above action light fixture 8 current which kind of state that are in, as:
1) current light fixture 8 is in closed condition, and detecting in this zone has personnel to exist, and when illuminance is not enough, will open light fixture 8 automatically;
2) current light fixture 8 is in closed condition, as long as receive the instruction of turning on light by wireless network, with regard to the desired light fixture 8 of OPEN;
3) current light fixture 8 is in opening, and (as: 5 minutes, can pass through software setting) do not detect in this zone and have personnel to exist in setting-up time, then close light fixture 8 automatically;
4) current light fixture 8 is in opening, as long as receive the instruction of turning off the light by wireless network, with regard to the desired light fixture 8 of out code;
Described sensor assembly is made up of illuminance sensor 32 and human body detection sensor 31, wherein, illuminance sensor 32 (present embodiment is installed on the mansion indoor ceiling), input passes through switch 4 by control module 2, for illuminance sensor 32 provides power supply, illuminance sensor 32 outputs link to each other with control module 2; Human body detection sensor 31, (present embodiment is installed on the mansion indoor ceiling) releases infrared probe collection personnel activity information by heat, and its output links to each other with control module 2;
Described illuminance sensor 32 adopts the connected mode of photo resistance and conventional, electric-resistance series connection dividing potential drop, and the dividing potential drop node links to each other with microcontroller, and microcontroller is determined the illuminance of current environment by this partial pressure value.
Described human body detection sensor 31 inputs adopt heat to release infrared probe.
Each switch element of described control output module 7 connects a lighting loop; The switch element that is adopted is a relay.
The relay that described control output module 7 adopts is a solid-state relay.
Supply power mode of the present invention is as follows: (AC/DC changeover switch 12 is by capacity voltage dropping circuit by AC/DC changeover switch 12 to adopt civil power 13 (present embodiment is the 220V AC-powered), rectification and voltage stabilizing circuit are formed, be prior art) back generation direct current 12V direct current, relay power supply for control output module 7, described 12V direct current utilizes Voltage stabilizing module 11 (present embodiment adopts the BM1117 chip) to become the 3.3V direct current again, is other module for power supply;
In the present embodiment, described human body detection sensor 31 adopts heat to release infrared probe; Described filter circuit 5 adopts the RC low-pass filter circuit; Described signal processor 6 adopts the BISS0001 chip; Functions such as the microcontroller that described control module 2 is adopted has A/D conversion, radio-frequency receiving-transmitting, input and output, the timing of turning off the light.
Operation principle of the present invention is as follows:
Personnel activity's information via filter circuit 5 that human body detection sensor 31 collects carries out filtering and 6 pairs of information of signal processor are handled, information after the processing sends control module 2 (microcontroller) to the level signal form, control module 2 gives illuminance sensor 32 power supplies by switch 4, illuminance sensor 32 begins to gather illuminance information, described illuminance sensor 32 dividing potential drop of connecting with resistance, according to current illuminance difference, the series connection partial pressure value is also different, and control module 2 is determined current illuminance according to this magnitude of voltage; After gathering end, microcontroller still cuts out the power supply of illuminance sensor 32 by switch 4, come energy efficient.Control module 2 also receives the wireless instructions of host computer 10 simultaneously by network controller 9, the wireless instructions that host computer 10 sends over is responsible for transmitting the information of judging light fixture 8 switches to control module 2; After the judgement, control module 2 will be exported control signal, and control light fixture 8 switches by the control output module 7 that is driven by Darlington transistor.
Effect: combining with wireless sensor network technology of the present invention and lighting control technique, can realize the automatic control of light fixture 8 easily.Compared with prior art, the present invention program's mounting arrangements has flexibility (mobility when building automation system is rearranged), can solve the network-in-dialing problem that wired mode is difficult for realization quickly and easily.
Embodiment 2
Be with embodiment one difference:
As shown in Figure 3, control module 2 can also receive the wireless instructions of host computer 10 by router one 4, and wherein, host computer 10 connects router 14 by network controller 9.
Described illuminance sensor 32 and human body detection sensor 31 can be installed on the wall of mansion corridor and (can also be installed on the ceiling or wall of entrance hall, corridor).
The relay that described control output module 7 adopts is magnetic latching relay (can also adopt the common electrical magnetic relay).
Claims (9)
1. the lamp dimmer based on wireless sensor network is installed in the wireless sensor network that comprises host computer (10), network controller (9) formation; Wherein, host computer (10) is communicated by letter with lamp dimmer by network controller (9); Described lamp dimmer structure comprises:
-control module (2) has control program, is used to move control strategy, communicates by letter with host computer (10) by network controller (9);
-sensor assembly links to each other with control module (2), is used to gather ambient light illumination and personnel activity's information;
-control output module (7), input links to each other with control module (2), and output is connected to light fixture (8) by switch element, is used to control the switch of light fixture (8).
2. according to the described lamp dimmer based on wireless sensor network of claim 1, it is characterized in that: described control module (2) has A/D conversion, radio-frequency receiving-transmitting, input and output, the timing function of turning off the light.
3. according to the described lamp dimmer of claim 1 based on wireless sensor network, it is characterized in that: also comprise router (14) in the wireless sensor network, described control module (2) is also communicated by letter with host computer (10) by router (14) in the wireless sensor network and network controller (9).
4. according to the described lamp dimmer based on wireless sensor network of claim 1, it is characterized in that: described control program flow process is as follows:
Control module (2) is in wait state, divides three the tunnel to receive control command or control information then;
One the tunnel receives the controlled in wireless instruction, if turn off the light instruction and when being in opening, light fixture (8) is carried out the action of turning off the light at light fixture (8); Be that turn on light instruction and light fixture (8) is in closed condition else if, light fixture (8) is carried out the turn on light action and the timer zero clearing of will turning off the light;
The current time is judged on another road, if exceed timing, illustrating does not have personnel in this zone, when being in opening, light fixture (8) is carried out the action of turning off the light at light fixture (8);
Last road receives the personnel activity's information in pickup area, collect personnel activity's information after, receive the illuminance information that collects again, and adopt the principle of Schmidt trigger to determine current illuminance state; If illuminance is inadequate, control module (2) is carried out the action of turning on light to light fixture (8);
No matter carry out after the above action current which kind of state that is in of light fixture (8), when light fixture (8) state variation, the state that light fixture (8) is current reports to host computer (10) by wireless network, otherwise returns wait state.
5. according to the described lamp dimmer of claim 1 based on wireless sensor network, it is characterized in that: described sensor assembly is made up of illuminance sensor (32) and human body detection sensor (31), wherein, the input of illuminance sensor (32) provides power supply by switch (4) for illuminance sensor (32) by control module (2), and illuminance sensor (32) output links to each other with control module (2); Human body detection sensor (31) input is gathered personnel activity's information, and output links to each other with control module (2).
6. according to the described lamp dimmer of claim 4 based on wireless sensor network, it is characterized in that: described illuminance sensor (32) adopts the connected mode of photo resistance and conventional, electric-resistance series connection dividing potential drop, the dividing potential drop node links to each other with control module (2), and control module (2) is determined the illuminance of current environment by this partial pressure value.
7. according to the described lamp dimmer based on wireless sensor network of claim 4, it is characterized in that: described human body detection sensor (31) input adopts heat to release infrared probe.
8. according to the described lamp dimmer based on wireless sensor network of claim 1, it is characterized in that: the switch element of described control output module (7) connects lighting loop; The switch element that is adopted is a relay.
9. according to the described lamp dimmer based on wireless sensor network of claim 7, it is characterized in that: the relay that described control output module (7) adopts can be solid-state relay, common electrical magnetic relay or magnetic latching relay.
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| CN2009100123725A CN101938868A (en) | 2009-07-03 | 2009-07-03 | Wireless sensor network based light controller |
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| CN2009100123725A CN101938868A (en) | 2009-07-03 | 2009-07-03 | Wireless sensor network based light controller |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610137A (en) * | 2012-04-06 | 2012-07-25 | 天津工业大学 | Semiconductor intelligent illumination control experimental teaching platform |
| CN103249224A (en) * | 2013-04-24 | 2013-08-14 | 无锡商业职业技术学院 | Zigbee network-based intelligent lamplight following system |
| CN104238423A (en) * | 2014-09-18 | 2014-12-24 | 哈尔滨新中新华科电子设备有限公司 | Energy-saving switch with networking function and control method |
| CN106102277A (en) * | 2016-07-28 | 2016-11-09 | 北海和思科技有限公司 | A kind of corridor non-attended light Ore-controlling Role |
| CN106385736A (en) * | 2016-11-18 | 2017-02-08 | 广西大学 | Emergency lighting management system based on smart light control technology |
| CN107105554A (en) * | 2016-02-19 | 2017-08-29 | 上海易同智能科技有限公司 | Illumination control method, system and intelligent terminal |
| CN107690641A (en) * | 2015-05-12 | 2018-02-13 | 飞利浦照明控股有限公司 | Method and system for management space configuration |
| CN112748275A (en) * | 2020-12-15 | 2021-05-04 | 天津智易时代科技发展有限公司 | Electrostatic purifier monitoring module and monitoring method thereof |
| CN114302589A (en) * | 2021-12-13 | 2022-04-08 | 武汉吉光若羽数字科技有限公司 | Interactive light control cabinet and light control system |
| CN117098296A (en) * | 2023-10-18 | 2023-11-21 | 北京美的海外工程技术有限公司 | Energy-saving illumination control method and device, electronic equipment and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101217841A (en) * | 2008-01-08 | 2008-07-09 | 天津市英克瑞电子技术有限公司 | A distributed scene light control system |
| CN101420805A (en) * | 2008-11-28 | 2009-04-29 | 华南农业大学 | Automatic control system for wireless communication lamp light switch and controlling method therefor |
| CN201435850Y (en) * | 2009-07-03 | 2010-03-31 | 中国科学院沈阳自动化研究所 | Lamp light controller |
-
2009
- 2009-07-03 CN CN2009100123725A patent/CN101938868A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101217841A (en) * | 2008-01-08 | 2008-07-09 | 天津市英克瑞电子技术有限公司 | A distributed scene light control system |
| CN101420805A (en) * | 2008-11-28 | 2009-04-29 | 华南农业大学 | Automatic control system for wireless communication lamp light switch and controlling method therefor |
| CN201435850Y (en) * | 2009-07-03 | 2010-03-31 | 中国科学院沈阳自动化研究所 | Lamp light controller |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610137A (en) * | 2012-04-06 | 2012-07-25 | 天津工业大学 | Semiconductor intelligent illumination control experimental teaching platform |
| CN103249224A (en) * | 2013-04-24 | 2013-08-14 | 无锡商业职业技术学院 | Zigbee network-based intelligent lamplight following system |
| CN104238423A (en) * | 2014-09-18 | 2014-12-24 | 哈尔滨新中新华科电子设备有限公司 | Energy-saving switch with networking function and control method |
| CN107690641B (en) * | 2015-05-12 | 2022-02-11 | 昕诺飞控股有限公司 | Method and system for managing spatial configuration |
| CN107690641A (en) * | 2015-05-12 | 2018-02-13 | 飞利浦照明控股有限公司 | Method and system for management space configuration |
| CN107105554A (en) * | 2016-02-19 | 2017-08-29 | 上海易同智能科技有限公司 | Illumination control method, system and intelligent terminal |
| CN106102277B (en) * | 2016-07-28 | 2019-04-19 | 北海和思科技有限公司 | A kind of automatic lighting control system of corridor |
| CN106102277A (en) * | 2016-07-28 | 2016-11-09 | 北海和思科技有限公司 | A kind of corridor non-attended light Ore-controlling Role |
| CN106385736A (en) * | 2016-11-18 | 2017-02-08 | 广西大学 | Emergency lighting management system based on smart light control technology |
| CN112748275A (en) * | 2020-12-15 | 2021-05-04 | 天津智易时代科技发展有限公司 | Electrostatic purifier monitoring module and monitoring method thereof |
| CN114302589A (en) * | 2021-12-13 | 2022-04-08 | 武汉吉光若羽数字科技有限公司 | Interactive light control cabinet and light control system |
| CN114302589B (en) * | 2021-12-13 | 2023-08-29 | 武汉吉光若羽数字科技有限公司 | Interactive light control cabinet and light control system |
| CN117098296A (en) * | 2023-10-18 | 2023-11-21 | 北京美的海外工程技术有限公司 | Energy-saving illumination control method and device, electronic equipment and storage medium |
| CN117098296B (en) * | 2023-10-18 | 2024-02-02 | 北京美的海外工程技术有限公司 | Energy-saving illumination control method and device, electronic equipment and storage medium |
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Application publication date: 20110105 |