CN210328095U - Lighting energy-saving system - Google Patents
Lighting energy-saving system Download PDFInfo
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- CN210328095U CN210328095U CN201920444887.1U CN201920444887U CN210328095U CN 210328095 U CN210328095 U CN 210328095U CN 201920444887 U CN201920444887 U CN 201920444887U CN 210328095 U CN210328095 U CN 210328095U
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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Abstract
The utility model discloses an illumination economizer system, including management center host node, RS-485 network and each floor terminal node, the management center host node passes through the RS-485 network and is connected with each floor terminal node. The utility model discloses to carry out classroom illumination energy-conserving unified management through RS-485 network in whole teaching building, set up a management center in the teaching building, configure into backbone network with the subnet host computer of management center RS-485 host computer and each floor, each floor configuration is an RS-485 subnet, and a node (terminal node) on the subnet is regarded as to the controller in each classroom, and each subnode is connected to on the subnet host computer through RS-485 twisted pair line. The terminal node controller controls the on and off of the lighting lamp according to the illumination intensity and personnel conditions in the classroom, so that the lighting power consumption of the teaching building is saved to the maximum extent, and a teaching building administrator can automatically manage the lighting lamp of the whole teaching building in a management center.
Description
Technical Field
The utility model belongs to the technical field of the illumination, in particular to illumination economizer system.
Background
Teaching building is the indispensable partly of campus building, and its illumination power consumption is huge, and the extravagant phenomenon of electric energy is everywhere visible simultaneously, and its main reason lies in: (1) in the daytime, the lighting power supply is not turned off in time after class, and the phenomenon that no person is in a classroom and the lamp is turned on all the time often occurs; (2) after dinner, students go to a classroom to study, usually only one or two persons in the classroom turn all the illuminating lamps on, or the power supply is not turned off when the persons leave the classroom, so that the lamps are always on at night. (3) In addition, the lifetime of a lighting fixture is usually measured in hours, and the incandescent light in an unmanned classroom causes a waste of electric energy on the one hand and a damage of the fixture on the other hand, which increases the cost of replacing the fixture. At present, energy-saving management of college campus teaching buildings is mainly performed manually, a teaching building administrator regularly inspects classrooms, lighting lamps are turned off when no person exists in the classrooms, and lighting power supplies in the classrooms are turned off uniformly when the building is cleared at night. Therefore, the efficiency of the energy-saving management work of the teaching building is low, and the automation degree is not high.
The campus is a place with dense personnel, the energy consumption is always high, and energy conservation and the establishment of a green energy-saving new campus are popular. The campus building energy conservation has obvious economic benefit and social benefit, is one of the non-negligible works in the campus management, and the adoption of an automatic energy-saving management mode is urgent.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: in order to overcome not enough above, the utility model aims at providing an illumination economizer system has solved the unmanned lamps and lanterns in classroom that exist in the present classroom illumination use but not closed, causes the extravagant condition of charges of electricity, has solved simultaneously because the lamps and lanterns life that the lamps and lanterns caused do not close for a long time shortens the problem.
The technical scheme is as follows: the illumination energy-saving system comprises a management center main node, an RS-485 network, each floor terminal node and each floor sub-network host, wherein the RS-485 network comprises an RS-485 backbone network and a plurality of sub-networks, each floor terminal node comprises all classroom terminal nodes of each floor in a teaching building, the management center main node is connected with each floor sub-network host through the RS-485 backbone network, each classroom terminal node is connected with the floor sub-network host through an RS-485 twisted pair, the management center main node comprises a PC and an RS-485 main controller, the PC and the RS-485 main controller are connected through serial ports, and the sub-networks are connected between the classroom terminal nodes and the floor sub-network hosts on the same floor. The utility model discloses an energy-saving lighting system mainly is applied to the teaching building in, will put a whole teaching building through RS-485 network and carry out classroom illumination energy-saving unified management. A management center is arranged in a teaching building, an RS-485 host of the management center and a subnet host of each floor are configured into a backbone network, each floor is configured into an RS-485 subnet, each subnet host of each floor is a main node of the RS-485 subnet, and a controller in each classroom is used as a sub-node on the subnet. In each classroom, the terminal node controller controls the on-off of the lighting lamp according to the illumination intensity and the personnel condition in the classroom, so that the lighting power consumption of the teaching building is saved to the maximum extent. The teaching building administrator can automatically manage the illumination lamps of the whole teaching building in a management center, can observe the running state of each node through an upper computer graphic monitor, and can also independently control the illumination system of each classroom. The system is constructed to automatically manage the operation of the classroom lighting system of the teaching building and save electric energy.
Furthermore, in the above energy-saving lighting system, the classroom terminal node includes a power conversion module, a microcontroller, a human-computer interaction interface, a sensor module, a switch execution module and a data interface, the power conversion module is connected with a power interface of the microcontroller, the human-computer interaction interface is connected with the microcontroller, the sensor module is connected with an input end of the microcontroller, the switch execution module is connected with an output end of the microcontroller, and the data interface is connected with the microcontroller.
Further, foretell energy-saving lighting system, the sensor module includes a set of pyroelectric infrared sensor, a set of infrared sensor and a set of illuminance sensor, a set of pyroelectric infrared sensor is fixed to be set up in the classroom, a set of infrared sensor is fixed to be set up in the classroom entrance, a set of illuminance sensor is fixed to be set up on the outer wall in classroom. In the system, the light intensity in the outdoor environment is measured by using the illumination sensor, the measured illumination is converted into a voltage value corresponding to the indoor illumination, the voltage value is converted into a digital signal through the A/D module and is input into the single chip microcomputer, and the single chip microcomputer carries out calculation and decision-making according to the input digital signal. The selected illuminance sensor is a 16-bit digital output type ambient light intensity sensor integrated circuit for a two-wire serial bus interface, and the model of the selected illuminance sensor is BH1750 FVI. Its spectral sensitivity is the closest visual sensitivity, and the bound of the light intensity that can detect is very big, and is less to the reliance of light source, compares with the illuminance sensor of other models, and BH1710FVI receives the influence of infrared ray less, and its precision is high, can satisfy the demand of this system completely. The infrared sensor comprises an infrared transmitter, a receiver and a signal processor, wherein the signal output end of the signal processor is connected with the infrared transmitter through an infrared transmitting circuit; the signal input end is connected with the infrared receiver through the infrared receiving circuit, and the feedback signal output end is connected with the peripheral control circuit. The utility model discloses infrared emitter sends the infrared ray signal that has the coded signal to real-time detection is through the reflected signal after amplifier circuit handles, and its coded signal can guarantee that the sensor of a plurality of the same models is worked simultaneously with the ground and not mutual interference. And the working frequency is consistent, the reliability is high, and the power consumption is low.
The method for calculating the number of people in the classroom by the infrared sensor comprises the following steps:
① the number of people in the room is judged according to 2 sets of special infrared transmitting/receiving sensors installed at the door.
When the outside infrared ray is blocked firstly and the inside sensor of the door is blocked immediately, and the outside infrared ray reception is restored firstly, and the inside of the door is restored later, it is judged that someone enters the room. Otherwise, the person leaves the room. For the conditions of shielding of static objects and the like, the working state of the switching system enters a protection state by combining and judging the indoor pyroelectric infrared sensor, and the lamp-off delay is prolonged at the moment.
② when the system estimates the number of people in room is more than or equal to 1, if the time meets the set condition, the lamp will not be turned off, when the system estimates the number of people in room to be 0, the system turns off the lamp according to the set delay.
A pyroelectric infrared sensor is an electronic device that can detect infrared rays emitted from a human body. It can convert infrared ray radiated by human body into electric signal, and the electric signal can drive various control circuits through proper amplification. The pyroelectric infrared sensor consists of a detection element, an optical filter and a field effect tube, when no human body radiation enters the sensor, two ends of a capacitance of the detection element generate equal charges with opposite polarities, and the sensor does not output the charges. When radiation from a stationary body enters the sensor, the sensor will not output because of the cancellation effect. When the infrared ray of the moving human body in the detection range enters the sensor, the balance is destroyed due to the unequal energy of the infrared ray, and the sensor outputs. The traditional pyroelectric infrared sensor switch can only identify a moving human body, and when students read books in special areas such as classrooms, the students have less activity, so that intermittent power-off and light-off can be caused. Too long a delay will result in a waste of electrical energy.
The utility model discloses the model of the illuminance sensor who chooses for use is BH1750FVI, and this kind of illuminance sensor mainly comprises photodiode, integrated operational amplifier, AD conversion module, internal oscillator. The working principle of the device is that alternating current is applied to the whole circuit through an internal oscillator, the photoresistor is illuminated, the photoresistor generates current, the current is converted into voltage through the integrated operational amplifier, then light intensity calculation and register are carried out, and the register of the magnetic sensor consists of a data register and a measuring time register.
The utility model provides a pyroelectric infrared sensor combines the method of using with infrared sensor, can discern the human activity in the classroom effectively and judge indoor number, overcome the unable defect of surveying indoor static personage of traditional infrared switch to furthest's saves the electric energy.
Further, in the above lighting energy saving system, the power conversion module includes a 220V power supply, a transformer, a bridge rectifier circuit, a three-terminal regulator, a first capacitor, a second capacitor, a third capacitor and a fourth capacitor, the 220V power supply is connected to the transformer, the transformer is connected to the bridge rectifier circuit, the first capacitor and the second capacitor are connected in parallel, one end of the first capacitor and the second capacitor connected in parallel is connected to an output end of the three-terminal regulator, the other end of the first capacitor and the second capacitor connected in parallel is connected to GND, the third capacitor and the fourth capacitor connected in parallel, one end of the third capacitor and the fourth capacitor connected in parallel is connected to an input end of the three-terminal regulator, the other end of the third capacitor and the fourth capacitor connected in parallel is connected to GND, a ground terminal of the three-terminal regulator is connected to DND, and an output end of the three-terminal regulator is connected to a power supply, and the output end of the bridge rectifier circuit is connected with one end of the third capacitor and the fourth capacitor which are connected in parallel and the input end of the three-terminal voltage stabilizer. The utility model discloses use the IN4007 diode to constitute full wave bridge rectifier circuit, the voltage stabilizing circuit who chooses for use is LM7805 stabiliser.
Further, in the lighting energy saving system, the microcontroller is in a model of LPC1114FBD 48. An LPC11U66BD48 chip of NXP company is selected as a master control chip of a master node of a management center and each sub-network master node. An LPC1114FBD48 chip is selected as a main control chip of a system terminal node.
The LPC1114 has a leading ARM Cortex-M0 core, an advanced manufacturing process and strong peripherals of NXP company, and the series of Cortex-M0 microcontrollers are high-performance, low-power consumption 32-bit microprocessors designed for embedded system applications. Its main frequency is up to 50MHz, and 3 low power consumption modes of sleep, deep sleep and deep power down are supported. The system also has abundant peripheral equipment, up to 32KB on-chip flash, 8K on-chip RAM, one IIC, one RS-485, 8-channel 10-bit ADC, two SSPs, 4 universal timers and up to 42 IO ports. The core platelet of the LPC1114 is provided with a reset circuit, a clock circuit, a filter capacitor, an LPC114 chip and an ISP downloading port.
Further, in the above lighting energy saving system, the model of the illuminance sensor is BH1750 FVI.
Further, in the above lighting energy saving system, the model of the three-terminal regulator is LM 7805.
Further, in the above lighting energy saving system, the model of the human-computer interaction interface is LCD 1602. The utility model provides a display screen is used for real-time display system's operating parameter to human-computer interaction. The LCD model 1602 is selected in the system, and belongs to an industrial character type, and can simultaneously display 16 × 2 (16 columns and 2 rows), namely 32 characters. The LCD1602 has powerful functions in displaying letters, numbers and the like, and the display is low in price and easy to write and can meet the use requirements of the system. The utility model discloses in, LCD 1602's effect is that the control parameter that shows illuminance, mode, operating condition etc. does not have the network under the stand-alone mode, the user can set up time, current date, the operation password etc. that for example the time delay was closed the light to the controller through the operation button.
The pins of the LCD1602 have three purposes, some are used for power, some are data type pins, and the rest are programming control type pins. The utility model discloses a display element is LCD in a poor light, and it possesses the standard 16 pin interface.
The utility model discloses in, need artifically to control lamps and lanterns load under some circumstances. So the utility model discloses in set up 4 entity buttons, be used for carrying out various operations.
Further, in the lighting energy-saving system, the switch execution module comprises a first triode, a first photoelectric coupler, a first silicon controlled rectifier, a second triode, a second photoelectric coupler, a second silicon controlled rectifier, a lighting lamp and a manual switch, bases of the first triode and the second triode are connected with an output end of the microcontroller, the first triode and the second triode are connected with different output pins of the microcontroller, the emitter of the first triode is connected with the input end of a first photoelectric coupler, one end of the output end of the first photoelectric coupler is connected with a first controlled silicon, the other end of the output end of the first photoelectric coupler is connected with one end of the lighting lamp, one end of the first controllable silicon is connected with a live wire, the other end of the first controlled silicon is connected with a manual switch, and the manual switch is arranged between the first controlled silicon and the lighting lamp; the emitting electrode of the second triode is connected with a second photoelectric coupler, one end of the output end of the second photoelectric coupler is connected with a second silicon controlled rectifier, the other end of the output end of the second photoelectric coupler is connected with one end of the lighting lamp, 2 terminals of the first silicon controlled rectifier are connected with the manual switch in series, and two ends, connected with the manual switch in parallel, of the first silicon controlled rectifier are connected with two pins of the second silicon controlled rectifier in parallel. The design of above-mentioned circuit is exactly to carry out a series of processings with the signal of singlechip output, reaches the transmission or blocks the purpose of signal, the utility model discloses a drive circuit designs around 2 silicon controlled rectifiers, in order to control the break-make of silicon controlled rectifier through the singlechip, adds optoelectronic coupler between singlechip and silicon controlled rectifier, the utility model discloses a be MOC3021 optoelectronic coupler, MOC3021 optoelectronic coupler mainly comprises emitting diode and photo resistance. The function of the device is to convert the electric signal input by the singlechip into the optical signal of the light-emitting diode, the light emitted by the diode is irradiated on the photosensitive resistor, and the optical signal is converted into the electric signal and transmitted to the controlled silicon. The photoelectric coupler has the advantages that due to the coupling characteristic, the influence of interference is eliminated, the stability is high, the coupling voltage is high, and the photoelectric coupler is suitable for application of the system. When the singlechip sends out a high level, the triode is conducted, the photoelectric coupler is conducted, and the silicon controlled rectifier is conducted; and when the level is low, the triode is cut off, the photoelectric coupler is disconnected, and the silicon controlled rectifier is disconnected.
The working principle of the switch execution module is as follows: 2 input terminals of the switch execution module are respectively used for controlling 2 controllable silicon, so that manual/automatic mode switching of the field controller is realized. When D1 is high level and D2 is low level, Q1 is turned on, Q2 is turned off, and the system is in automatic mode; when D2 is high and D1 is low, Q2 is on and Q1 is off, and the system is in manual mode.
The utility model discloses lighting economizer system's operating method, including following step:
1) the management center main node judges whether the classroom is a teaching time period or a self-study time period;
2) the classroom is a teaching time period, the management center main node sets the lighting lamp of the classroom terminal node to be in a manual control state, and teachers and students manually control the lighting lamp according to teaching requirements;
3) the classroom is a morning and evening self-study time period, the management center main node sets the lighting lamps of the classroom terminal nodes to be in an automatic control state, the illumination and the number of people using the classroom are detected through a group of pyroelectric infrared sensors, a group of infrared sensors and a group of illumination sensors, and the lighting lamps are automatically controlled to be turned on and turned off;
4) in the step 3), the automatic control of the lighting lamps is that the microcontroller collects and calculates the number of people in the classroom;
5) the infrared sensor detects human body activities in the classroom, whether the human body activities exist is judged to be a morning and evening study period or a morning and evening study period, and the lighting lamp is turned on; the indoor lamp is turned off after delaying a certain time without human body activity;
6) step 5) judging whether the time period is a morning and evening study time period, judging whether the number of people in the classroom is zero, judging whether the time period is a night study time period, and judging whether the time period is a morning and evening study time period;
7) if the lighting time is the night time, the indoor lamp is turned off after delaying for a certain time, and if the lighting time is not the night time, whether the lighting is in a sufficient state is judged;
8) judging whether the number of people in the classroom is zero or not, keeping the lamps in the classroom on when the number of people is not zero, delaying the lamps in the classroom to be turned off for a certain time when the number of people is zero;
9) judging the sufficient illumination state, delaying the closing of the indoor lamp for a certain time, and keeping the lamp open when the illumination is insufficient;
10) detecting the number of people in step 3): install the infrared sensor who detects the number in the inboard and outside of door, the infrared sensor who is in the outside of door is blockked earlier, and the infrared sensor of the inboard of door is closely followed and is blockked, and the infrared sensor of the outside of door resumes earlier, resume behind the infrared sensor of the inboard of door, judge someone and get into the classroom, the infrared sensor who is in the inboard of door is blocked earlier, and the infrared sensor of the outside of door is closely followed and is blockked, and the infrared sensor of the inboard of door resumes earlier, resume behind the infrared sensor of the outside of door, judge someone and leave the classroom.
Above-mentioned technical scheme can find out, the utility model discloses following beneficial effect has: illumination economizer system, through the reasonable division of management center with classroom terminal sub-node, can monitor all classrooms, rational arrangement is used for human body and illumination to detect the sensor simultaneously in the classroom, can in time feed back the signal to microcontroller, the controller of being convenient for throws light on the control that lamps and lanterns closed, has improved the utilization ratio of classroom illumination lamps and lanterns, has reduced the waste of resource.
Drawings
Fig. 1 is a network structure diagram of the lighting energy-saving system according to the present invention;
fig. 2 is a schematic diagram of the lighting energy saving system according to the present invention;
fig. 3 is a circuit diagram of a switch execution module according to the present invention;
fig. 4 is a circuit diagram of the power conversion module according to the present invention;
FIG. 5 is a diagram of a connection structure of the human-computer interface according to the present invention;
fig. 6 is a main interface diagram of an upper computer of the illumination energy-saving system according to the present invention;
fig. 7 is a flowchart illustrating the operation of the energy saving lighting system according to the present invention;
fig. 8 is a plan layout view of the energy saving lighting system of the present invention.
In the figure: the intelligent management system comprises a management center main node 1, a PC11, an RS-485 main controller 12, an RS-485 network 2, a main RS-485 trunk network 21, a sub-network 22, each floor terminal node 3, each floor sub-network host 4, a classroom terminal node 31, a power conversion module 311, a three-terminal regulator 3111, a first capacitor 3112, a second capacitor 3113, a third capacitor 3114, a fourth capacitor 3115, a transformer 3116, a bridge rectifier circuit 3117, a microcontroller 312, a man-machine interaction interface 313, a sensor module 314, a pyroelectric infrared sensor 3141, an infrared sensor 3142, an illuminance sensor 3143, a switch execution module 315, a first triode 3151, a first photoelectric coupler 3152, a first controllable silicon 3153, a second triode 3154, a second photoelectric coupler 3155, a second controllable silicon 3156, an electric lamp 3157, a manual switch 3158 and a data interface 316.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Examples
The energy-saving lighting system as shown in figures 1-4 comprises a management center main node 1, an RS-485 network 2, floor terminal nodes 3 and floor subnet hosts 4, wherein the RS-485 network 2 comprises an RS-485 backbone network 21 and a plurality of sub-networks 22, each floor terminal node 3 comprises all classroom terminal nodes 31 of each floor in a teaching building, the management center main node 1 is connected with each floor subnet host 4 through the RS-485 backbone network 21, each classroom terminal node 31 is connected with the floor subnet host 4 through an RS-485 twisted pair, the energy-saving lighting system is characterized in that the management center main node 1 comprises a PC11 and an RS-485 main controller 12, the PC11 and the RS-485 main controller 12 are connected through a main control serial port, the sub-networks 22 connect the classroom terminal nodes 31 located on the same floor with the floor subnet host 4, the management center main node comprises a PC and an RS-485 main controller, the PC and the RS-485 main controller are connected through a main control serial port, data and control instructions are achieved by the PC, the PC is connected through a special control interface developed by a C, the computer, the sub-network interfaces of the computers are connected with the floor subnet hosts, the communication network host is achieved by a simplified topology, the master node topology is improved, the reliability of the floor subnet master node, the communication network is improved by the communication network, the communication of the communication network, the communication sub-networks, the floor subnet sub-networks are achieved by the communication sub-networks, the communication sub-networks are improved by the communication sub-networks, the reliability of the communication sub-networks, the communication sub-networks are achieved by the communication sub-network sub-networks, the communication sub-networks are improved by the communication sub-networks, the reliability of the communication sub-networks, the communication sub-networks are achieved by the.
And transmitting data among the floor subnet nodes through a customized communication protocol. The host polls the state of each sub-node according to the address by adopting a timing query mode, can screen and sort the collected data and then report the data through the main network, and under a direct control mode, the sub-network main node can route data frames through a network layer protocol to realize the direct control of the main node on the terminal node.
The RS-485 network communication message is divided into a timing message and an event trigger message. The timing message is used for collecting data information of the terminal node, and the event trigger message is used for realizing control instruction transmission or other special operations such as parameter group updating, program updating and the like of the terminal node.
The data frame is divided into a single frame, a header frame, a continuous frame, and the like, the single frame is usually used for timing message transmission, and the data is relatively short. Header frames, continuous frames, etc. are generally used for event triggered messages, and more data can be transmitted. The frame header ID field is used for frame class differentiation and priority control. The messages are distinguished by the frame data field ID. The main node of the network uses two UARTs to realize primary and secondary networks without mutual interference.
As shown in fig. 2, the classroom terminal node 31 includes a power conversion module 311, a microcontroller 312, a human-computer interface 313, a sensor module 314, a switch execution module 315, and a data interface 316, wherein the power conversion module 311 is connected to a power interface of the microcontroller 312, the human-computer interface 313 is connected to the microcontroller 312, the sensor module 314 is connected to an input end of the microcontroller 312, the switch execution module 315 is connected to an output end of the microcontroller 312, and the data interface 316 is connected to the microcontroller 312. The single chip microcomputer serves as the core of the system, outdoor illumination is detected by an illumination sensor, the number of people entering and leaving a classroom is detected by an infrared detector, whether the people move indoors or not is monitored by a pyroelectric infrared sensor, and finally, the lamps are determined to be turned on or off according to the set time threshold and the operation mode of the system, so that the energy-saving operation of classroom illumination is realized. The specific working process is as follows: the nodes are configured with two states of automatic control and manual control, the classroom is divided into two time periods of teaching and self-study, in the teaching time period, the system is set to be in the manual control state, and teachers and students manually control the lighting lamps according to teaching requirements; in the morning and evening study time quantum, set the system into automatic state, the system detects illuminance and the number of using people in the classroom this moment, and when outdoor illuminance is less than the setting value, and indoor have more than 1 people to read, when studying by oneself, lamps and lanterns are automatic to be lighted, supply teachers and students to use. When no person is in the classroom, the lamp is turned off in a delayed way for a certain time; in the time period of self-study in the morning and evening, even if people move indoors, the lamp cannot be automatically lightened, and if the lamp is lightened, the lamp is extinguished in a delayed manner for a certain time; the lighting lamp in the classroom is forcibly closed at night according to the specified work and rest time, and the system is restored to the automatic running state in the morning according to the work and rest time, so that students can learn to use the system in the morning.
The sensor module 314 comprises a group of pyroelectric infrared sensors 3141, a group of infrared sensors 3142 and a group of illumination sensors 3143, wherein the group of pyroelectric infrared sensors 3141 are fixedly arranged in a classroom, the group of infrared sensors 3142 are fixedly arranged at the entrance of the classroom, and the group of illumination sensors 3143 are fixedly arranged on the outer wall of the classroom. The sensor module comprises a pyroelectric infrared sensor, an infrared sensor and an illumination sensor, and is an input part of the system. Following a common classroom layout (assuming: 2 in tandemDoor with an area of about 60-80m2A row of windows are arranged opposite to the door), 2 illumination sensors, 4 infrared sensors and 2 pyroelectric infrared sensors are arranged in each classroom.
The detection of the number of indoor personnel and the activity condition is mainly realized by 4 infrared sensors and 2 pyroelectric infrared sensors. The pyroelectric infrared sensor detects the indoor human body activity in real time and sets light-off delay according to different time periods and time strategies, for example, the light is turned off after the light-off time is delayed for 1 minute, and the light is turned off after the time period of self study to 10 minutes. The 2 pyroelectric infrared sensors are installed at positions (generally installed in a front-back mode and a ceiling mode) according to actual conditions, are used for detecting human body activities in a room and serve as main input parameters of a control strategy.
The 4 infrared sensors are arranged at 2 entrances of a classroom, and 1 infrared sensor is arranged inside and outside each entrance. The infrared sensor is used for detecting the human body activity at the door, and the number of people in the room is judged and counted according to the triggered time difference and is used as an input parameter of the control strategy.
The 2 illuminance sensors are installed on an outer wall near a classroom and used for detecting illuminance of an outdoor environment, indirectly obtaining the illumination degree in a room, identifying influences on indoor actual lighting caused by rainy days or other special weather and the like, and using the influences as one of main input parameters of a lamp energy-saving control strategy.
1#、2#Illuminance sensor, 1#—4#Infrared sensor, 1#、2#The pyroelectric infrared sensor is respectively connected to the GPIO and ADC pins of the LPC114FBD 48.
The power conversion module 311 includes a 220V power supply, a transformer 3116, a bridge rectifier 3117, a three-terminal regulator 3111, a first capacitor 3112, a second capacitor 3113, a third capacitor 3114 and a fourth capacitor 3115, the 220V power supply is connected to the transformer 3116, the transformer 3116 is connected to the bridge rectifier 3117, the first capacitor 3112 is connected in parallel to the second capacitor 3113, one end of the first capacitor 3112 connected in parallel to the second capacitor 3113 is connected to an output end of the three-terminal regulator 3111, the other end of the first capacitor 3112 connected in parallel to the second capacitor 3113 is connected to GND, the third capacitor 3114 is connected in parallel to the fourth capacitor 3115, one end of the third capacitor 3114 connected in parallel to the fourth capacitor 3115 is connected to an input end of the three-terminal regulator 3111, the other end of the third capacitor 3114 connected in parallel to the fourth capacitor 3115 is connected to GND, a ground end of the three-terminal regulator 3111 is connected to DND, an output end of the three-terminal regulator 3111 is connected to a power supply terminal of the microcontroller, the output end of the bridge rectifier circuit 3117 is connected to one end of the third capacitor 3114, the fourth capacitor 3115 in parallel, and the input end of the three-terminal regulator 3111. The power conversion module converts 220V alternating current into 5V direct current level used by the system. The transformer mainly comprises a transformer, a rectifier and a voltage stabilizer.
The microcontroller 312 is of the type LPC1114FBD 48. The microcontroller is the core of the system and plays a role in realizing the control function and the energy-saving logic of the whole node. Mainly comprises an MCU and an auxiliary chip. The system includes an EEPROM chip for storing the control strategy. The control chip adopts NXP LPC1114FBD48, the core of the control chip is ARM Cortex M0, the operation capability of the control chip is as high as 0.9 DMIPS/MHz, and compared with other traditional 16-bit/8-bit processors, the control chip has the advantage that the operation capability of the Cortex M0 is greatly improved, so that the Cortex M0 only needs lower CPU working time on the operation task of the same task, and the whole dynamic power consumption is greatly reduced. The system is in off-line single control, one RTC clock is used for storing time information, and a lamp control strategy is automatically adjusted by combining preset time setting information. The illuminance sensor 3143 is model BH1750 FVI. The type of the diode IN the bridge rectifier circuit is IN 4007. The three-terminal regulator 3111 is model LM 7805. The model of the human-computer interaction interface 313 is an LCD 1602.
The man-machine interaction interface consists of an LCD display screen and a group of keys, wherein the display screen is used for setting system time, setting a display mode and displaying system working parameters. 4 physical keys, front, back, confirm and exit. The software programming realizes the identification of various input modes such as long press, short press, combined key and the like. The man-machine interaction interface can carry out simple operation on the terminal node controller, such as mode setting, parameter adjustment and the like.
The switch executing module 315 includes a switch executing module 315 including a first triode 3151, a first photocoupler 3152, a first thyristor 3153, a second triode 3154, a second photocoupler 3155, a second thyristor 3156, a lighting fixture 3157 and a manual switch 3158, bases of the first triode 3151 and the second triode 3154 are connected to an output terminal of the microcontroller 312, the first triode 3151 and the second triode 3154 are connected to different output pins of the microcontroller 312, an emitter of the first triode 3151 is connected to an input terminal of the first photocoupler 3152, one end of an output terminal of the first photocoupler 3152 is connected to the first thyristor 3153, and the other end of the output terminal of the first photocoupler 3152 is connected to one end of the lighting fixture 3157, one end of the first thyristor 3153 is connected to a live wire, and the other end of the first thyristor 3153 is connected to the manual switch 3158, the manual switch 3158 is arranged between the first controllable silicon 3153 and the lighting lamp 3157; an emitter of the second triode 3154 is connected with a second photocoupler 3155, one end of an output end of the second photocoupler 3155 is connected with a second thyristor 3156, and the other end of the output end of the second photocoupler 3155 is connected with one end of the lighting fixture 3157, 2 terminals of the first thyristor 3153 are connected in series with the manual switch 3158, and two ends of the first thyristor 3153 and the manual switch 3158 in series are connected in parallel with 2 terminals of the second thyristor 3156. The switch execution module can add control on the lamp on the hardware switch. The utility model discloses in, mainly utilize a set of bidirectional thyristor and auxiliary circuit to realize opening and closing of lamps and lanterns under the automatic mode. The execution module can enable the hard-wired switch while the controller fails, without affecting the use of the light source.
In the application, the data interface is used for importing and exporting data and parameters in an off-line process, and fast setting, controller software upgrading and the like are achieved.
The utility model discloses a lighting energy-saving system's operating method, including following step:
1) the management center host node 1 judges whether the classroom is a teaching time period or a self-study time period;
2) the classroom is a teaching time period, the management center main node 1 sets the lighting lamp of the classroom terminal node 31 to be in a manual control state, and teachers and students manually control the lighting lamp according to teaching requirements;
3) when the classroom is a self-study time period, the management center main node 1 sets the lighting lamps of the classroom terminal node 31 to be in an automatic control state, and the illumination and the number of users in the classroom are detected through the group of pyroelectric infrared sensors 3141, the group of infrared sensors 3142 and the group of illumination sensors 3143, so that the lighting lamps are automatically controlled to be turned off;
4) in the step 3), the automatic control of the lighting lamps is that the microcontroller 312 in the terminal node collects and calculates the number of people in the classroom;
5) the infrared sensor 3142 detects human body activities in the classroom, and if the human body activities exist, judges whether the time period is a morning and evening study time period, and turns on the lamp; the indoor lamp is turned off after delaying a certain time without human body activity;
6) step 5) judging whether the time period is a morning and evening study time period, judging whether the number of people in the classroom is zero, judging whether the time period is a night study time period, and judging whether the time period is a morning and evening study time period;
7) if the lighting time is the night time, the indoor lamp is turned off after delaying for a certain time, and if the lighting time is not the night time, whether the lighting is in a sufficient state is judged;
8) judging whether the number of people in the classroom is zero or not, keeping the lamps in the classroom on when the number of people is not zero, delaying the lamps in the classroom to be turned off for a certain time when the number of people is zero; 9) Judging the sufficient illumination state, delaying the closing of the indoor lamp for a certain time, and keeping the lamp open when the illumination is insufficient;
10) detecting the number of people in step 3): the infrared sensors 3142 installed at the inner side and the outer side of the door detect the number of people, when the infrared sensor 3142 at the outer side of the door is blocked first, the infrared sensor 3142 at the inner side of the door is blocked immediately, and the infrared sensor 3142 at the outer side of the door is restored first, the infrared sensor 3142 at the inner side of the door is restored later, and it is determined that someone enters a classroom, when the infrared sensor 3142 at the inner side of the door is blocked immediately, the infrared sensor 3142 at the outer side of the door is blocked immediately, and the infrared sensor 3142 at the inner side of the door is restored first, the infrared sensor 3142 at the outer side of the door is restored later, and.
The delay time of the electric lamp can be flexibly set according to different schools, for example, the delay time can be set to 10 minutes, 15 minutes and the like.
Fig. 8 is the plane layout setting of the lighting energy-saving system in the classroom use process of the utility model, the specific lighting management system can flexibly adjust according to the occasion.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principles of the present invention, and these modifications should also be regarded as the protection scope of the present invention.
Claims (9)
1. The illumination energy-saving system comprises a management center main node (1), an RS-485 network (2), each floor terminal node (3) and each floor subnet host (4), wherein the RS-485 network (2) comprises an RS-485 backbone network (21) and a plurality of sub-networks (22), each floor terminal node (3) comprises all classroom terminal nodes (31) of each floor in a teaching building, the management center main node (1) is connected with each floor subnet host (4) through the RS-485 backbone network (21), and each classroom terminal node (31) is connected with each floor subnet host (4) through an RS-485 twisted pair, and the illumination energy-saving system is characterized in that: the management center main node (1) comprises a PC (11) and an RS-485 main controller (12), the PC (11) and the RS-485 main controller (12) are connected through a serial port, and the sub-network (22) connects the classroom terminal node (31) and the floor sub-network host (4) which are positioned on the same layer.
2. The lighting energy saving system of claim 1, wherein: the classroom terminal node (31) comprises a power supply conversion module (311), a microcontroller (312), a man-machine interaction interface (313), a sensor module (314), a switch execution module (315) and a data interface (316), wherein the power supply conversion module (311) is connected with a power supply interface of the microcontroller (312), the man-machine interaction interface (313) is connected with the microcontroller (312), the sensor module (314) is connected with an input end of the microcontroller (312), the switch execution module (315) is connected with an output end of the microcontroller (312), and the data interface (316) is connected with the microcontroller (312).
3. The lighting energy saving system of claim 2, wherein: the sensor module (314) comprises a group of pyroelectric infrared sensors (3141), a group of infrared sensors (3142) and a group of illumination sensors (3143), wherein the group of pyroelectric infrared sensors (3141) are fixedly arranged in a classroom, the group of infrared sensors (3142) are fixedly arranged at an entrance of the classroom, and the group of illumination sensors (3143) are fixedly arranged on an outer wall of the classroom.
4. The lighting energy saving system of claim 2, wherein: the power conversion module (311) comprises a 220V power supply, a transformer (3116), a bridge rectifier circuit (3117), a three-terminal regulator (3111), a first capacitor (3112), a second capacitor (3113), a third capacitor (3114) and a fourth capacitor (3115), wherein the 220V power supply is connected with the transformer (3116), the transformer (3116) is connected with the bridge rectifier circuit (3117), the first capacitor (3112) is connected with the second capacitor (3113) in parallel, one end of the first capacitor (3112) connected with the second capacitor (3113) in parallel is connected with the output end of the three-terminal regulator (3111), the other end of the first capacitor (3112) connected with the second capacitor (3113) in parallel is connected with GND, the third capacitor (3114) is connected with the fourth capacitor (3115) in parallel, one end of the third capacitor (3114) connected with the fourth capacitor (3115) in parallel is connected with the input end of the three-terminal regulator (3111), and the other end that third electric capacity (3114) and fourth electric capacity (3115) are parallelly connected is connected with GND, the earthing terminal of three terminal regulator (3111) is connected with DND, the output of three terminal regulator (3111) is connected with the power end of microcontroller (312), the output of bridge rectifier circuit (3117) is connected with the input of third electric capacity (3114), the parallelly connected one end of fourth electric capacity (3115) and three terminal regulator (3111).
5. The lighting energy saving system of claim 2, wherein: the microcontroller (312) is of the type LPC1114FBD 48.
6. The lighting energy saving system of claim 3, wherein: the type of the illuminance sensor (3143) is BH1750 FVI.
7. The lighting energy saving system of claim 4, wherein: the model of the three-terminal regulator (3111) is LM 7805.
8. The lighting energy saving system of claim 2, wherein: the model of the man-machine interaction interface (313) is an LCD 1602.
9. The lighting energy saving system of claim 2, wherein: the switch execution module (315) comprises a first triode (3151), a first photocoupler (3152), a first controllable silicon (3153), a second triode (3154), a second photocoupler (3155), a second controllable silicon (3156), a lighting lamp (3157) and a manual switch (3158), bases of the first triode (3151) and the second triode (3154) are connected with an output end of the microcontroller (312), the first triode (3151) and the second triode (3154) are connected with different output pins of the microcontroller (312), an emitter of the first triode (3151) is connected with an input end of the first photocoupler (3152), one end of an output end of the first photocoupler (3152) is connected with the first controllable silicon (3153), and the other end of the output end of the first photocoupler (3152) is connected with one end of the lighting lamp (3157), one end of the first controllable silicon (3153) is connected with a live wire, the other end of the first controllable silicon (3153) is connected with a manual switch (3158), and the manual switch (3158) is arranged between the first controllable silicon (3153) and the lighting lamp (3157); an emitting electrode of the second triode (3154) is connected with a second photoelectric coupler (3155), one end of an output end of the second photoelectric coupler (3155) is connected with a second controllable silicon (3156), the other end of the output end of the second photoelectric coupler (3155) is connected with one end of the lighting lamp (3157), 2 terminals of the first controllable silicon (3153) are connected with the manual switch (3158) in series, and two ends of the first controllable silicon (3153) and the manual switch (3158) in series are connected with two pins of the second controllable silicon (3156) in parallel.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109831862A (en) * | 2019-04-03 | 2019-05-31 | 硅湖职业技术学院 | Lighting energy-conservation system and working method |
| CN111954352A (en) * | 2020-09-08 | 2020-11-17 | 安徽世林照明股份有限公司 | Control system and method for lighting lamp of mobile terminal equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109831862A (en) * | 2019-04-03 | 2019-05-31 | 硅湖职业技术学院 | Lighting energy-conservation system and working method |
| CN111954352A (en) * | 2020-09-08 | 2020-11-17 | 安徽世林照明股份有限公司 | Control system and method for lighting lamp of mobile terminal equipment |
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