CN110062494B - Classroom LED lamp healthy illumination light attenuation warning device - Google Patents
Classroom LED lamp healthy illumination light attenuation warning device Download PDFInfo
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- CN110062494B CN110062494B CN201910237207.3A CN201910237207A CN110062494B CN 110062494 B CN110062494 B CN 110062494B CN 201910237207 A CN201910237207 A CN 201910237207A CN 110062494 B CN110062494 B CN 110062494B
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Abstract
The invention relates to aThe classroom LED lamp health illumination light decay warning device, every illuminance sensor links with correspondent zigbee wireless sending module and mounts into the identical corresponding lamps and lanterns, and the distance between luminous surface of the illuminance sensor and lamps and lanterns is the same as while leaving factory to examine; the control unit is respectively connected with the zigbee wireless receiving module, the liquid crystal display module and the indicating lamp set and is completely integrated on the liquid crystal display panel; the actual detection illuminance value collected by the illuminance sensor is sent to the control unit in a wireless transmission mode, and when the luminous flux maintenance rate eta of the lamp is obtained<When 70%, the corresponding mark of the liquid crystal display module displays a warning pattern; when the surface illuminance of the desk in the classroom is equal to EaWhen the current value is less than 300lx, the corresponding indicator lamp is highlighted. The invention can prompt a user that the lamp needs to be maintained or replaced when the luminous flux maintenance rate of the lamp is lower than 70 percent or the desk surface illumination is lower than the minimum illumination value required by the national standard.
Description
The technical field is as follows:
the invention belongs to the technical field of illumination, relates to a light attenuation warning device, and particularly relates to a classroom LED lamp healthy illumination light attenuation warning device.
Background art:
in the daily use process of the lighting lamp, most users can select to replace or maintain the lamp only under the condition that the lamp is obviously darkened and cannot meet the requirement of normal visual operation or cannot be lightened. Common users lack an effective and convenient method for detecting the rated service life limit value of the lamp, so that the optimal period for replacing the lamp is often missed, and the visual function is greatly influenced.
The data of the national health committee show that the incidence rate of myopia of teenagers in China exceeds that of other countries, and the teenagers are high in the world and have severe situations. The illumination lamps used in the traditional classroom at present can not accurately provide any lamp luminous flux maintenance rate in real time, and can not timely position, judge, maintain or replace bad lamps to meet the visual demands of students, so that the life and study time of the students in unhealthy light environments (particularly desktop illumination) is prolonged, eye fatigue is increased, and myopia and study efficiency are reduced.
The invention content is as follows:
the invention aims to provide a classroom LED lamp healthy illumination light decay warning device, which can prompt a user to maintain or replace a lamp when detecting that the light flux maintenance rate of the lamp is lower than 70% or the desk surface illumination is lower than the minimum illumination value required by the national standard.
In order to solve the technical problem, the classroom LED lamp health illumination light decay warning device comprises a control unit, n illumination sensors, n zigbee wireless transmitting modules, a zigbee wireless receiving module, a liquid crystal display module and an indicating lamp group, wherein the control unit is used for controlling the illumination sensors to emit light; wherein n is the number of LED lamps in a classroom; each illuminance sensor is connected with the corresponding zigbee wireless transmitting module and is arranged in the same corresponding lamp, and the distance D between the illuminance sensor and the light emitting surface of the lamp1Equal to the distance D between the illumination sensor and the light emitting surface of the lamp during the factory detection of the lamp3(ii) a The control unit is respectively connected with the zigbee wireless receiving module, the liquid crystal display module and the indicating lamp set, and the control unit, the zigbee wireless receiving module, the liquid crystal display module and the indicating lamp set are integrated on the liquid crystal display panel; the liquid crystal display module comprises display marks corresponding to the lamps; the indicating lamp group comprises a No. 3 indicating lamp; the actual detection illumination value collected by the illumination sensor is sent to the control unit through the corresponding zigbee wireless sending module and the zigbee wireless receiving module, and the factory detection illumination value of the lamp is set as E0The actual detection illuminance value is EcThe luminous flux maintenance ratio eta is Ec/E0(ii) a For any lamp, when the actual detection illuminance value Ec≥0.7E0When the display mark is displayed, the control unit controls the display mark corresponding to the liquid crystal display module to display the luminous flux maintenance rate eta; when actually detecting the illuminance value Ec<0.7E0When the liquid crystal display module is in use, the control unit controls the corresponding mark of the liquid crystal display module to display the warning pattern; meanwhile, the control unit calculates the surface illuminance E of the desk in the classroom according to the formula (1)a；
K1Is a proportion systemThe number of the first and second groups is,
K2to a fixed coefficient, K2＝0.55～0.6；
When E isaWhen the display screen is less than 300lx, the control unit controls the indicator light No. 3 to highlight.
The liquid crystal display panel is also provided with a selection switch, a driving unit and a relay group; the control unit is respectively connected with the selection switch and the driving unit; the control unit controls the corresponding relay in the relay group to act through the driving unit according to the switch selection signal of the selection switch so as to enable the corresponding line of lamps to be lightened.
The indicating lamp group also comprises a No. 1 indicating lamp; when a row of lamps is lighted, if all the lamps in the row actually detect the illuminance value EcAre all more than or equal to 0.7E0And if so, the control unit controls the No. 1 indicator lamp to highlight.
The indicating lamp group also comprises a No. 2 indicating lamp; when a row of lamps is lighted, if the actual detection illuminance value E of at least one lamp in the rowc<0.7E0And when the signal is received, the control unit controls the No. 2 indicating lamp to highlight.
And the liquid crystal display panel is also provided with a power switch.
The illuminance sensor is arranged on the frame of the lamp.
The illumination sensor can also be arranged on the telescopic rod; the telescopic rod is hinged with the lamp frame; the telescopic rod can be rotated or stretched to store the illumination sensor in the groove of the lamp frame, and the distance between the illumination sensor and the light emitting surface of the lamp can be adjusted.
The invention embeds the illumination sensor in the lamp, detects the illumination information of the luminous surface in real time, transmits the information to the liquid crystal display panel by adopting the zigbee wireless technology, and can observe the luminous flux maintenance rate information of the luminous surface of the lamp in real time through the liquid crystal display module. When the light flux maintenance rate of the lamp is lower than 70% or the desk surface illumination is lower than the minimum illumination value (300lx) required by the national standard along with the increase of the service time of the lamp, the corresponding display identifier of the liquid crystal display module displays a WARNING of a 'WARNING' pattern to prompt a user that the lamp needs to be maintained or replaced.
Description of the drawings:
the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a block diagram of the present invention.
FIG. 2a is a schematic view of an installation position of an illuminance sensor; fig. 2b is a partially enlarged view of portion a of fig. 2 a.
Fig. 3 is a flow chart of the light attenuation warning function of the present invention.
Fig. 4 is a flowchart of the operation of the indicator and the key.
FIG. 5 is a schematic view of a liquid crystal display panel.
Fig. 6 is a schematic diagram of classroom flat lamp illumination simulation.
The specific implementation mode is as follows:
the following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The classroom layer height in the school depends on factors such as air capacity, lighting uniformity, room proportion, space visual effect, economy and the like. For example, the net height of a classroom in a primary school is 3.1 meters, the net height of a classroom in a middle school is 3.4 meters, the height of a table top is 750 +/-10 mm, and a small amount of errors exist in individual areas.
Taking the condition of no sunlight factor as an example, the number of lamps used in a classroom, light mixing and cross light supplement among the lamps and the like can be simulated by using DIALux software before the lamps are installed, and the number and the arrangement mode of the lamps used in the classroom are measured and calculated. According to the relevant regulations of the current national relevant standard, namely the architectural lighting design standard GB 50034, the lighting power density values and the corresponding illumination values in different classrooms are shown in Table 1.
TABLE 1
In the using process of the lamp, the illumination sensor in the lamp automatically tests the illumination information of the lamp in real time. The distance between the illumination sensor and the light emitting surface of the lamp is 5-10 cm, and the distance between the light emitting surface of the lamp and the surface of a classroom desk is about 1.7-2.0 m according to an inverse proportion relation formula of the illumination value and the square of the distance.
As shown in fig. 1, the classroom LED lamp health lighting light degradation warning device of the present invention includes a control unit, n illuminance sensors 3, n zigbee wireless transmitting modules, zigbee wireless receiving modules, a liquid crystal display module, an indicator light set, a selection switch, a driving unit, a relay set, and a power switch.
As shown in fig. 2a and 2b, taking a flat lamp as an example, each illuminance sensor 3 may be fixedly mounted on the frame 11 of the corresponding lamp 1 and spaced from the light emitting surface of the lamp by a distance D1The illumination value of 5-10 cm away from the light emitting surface of the lamp can be detected; each illumination sensor 3 can also be installed on the telescopic rod 4, as shown in fig. 2b, the telescopic rod 4 is hinged with the frame 11 of the lamp, can rotate and stretch, and the illumination sensors 3 and the telescopic rod 4 are stored in the grooves 2 in the processes of lamp packaging, transportation, installation and the like; when the lamp is used, the distance between the illumination sensor 3 and the light emitting surface of the lamp can be adjusted through the telescopic rod 4.
The zigbee wireless transmitting module is fixed on the frame 11 of the lamp 1 and connected with the illuminance sensor.
The measuring range of the selected illumination sensor is 0.045 lx-188000 lx (capable of measuring sunlight), and the illumination information acquired by the illumination sensor is a digital signal (hexadecimal). The illuminance sensor is provided with an MCU element, and the MCU and the sensor pass through I2And the MUC calibrates the digital signals acquired by the illumination sensor to obtain a numerical value, namely the actual detection illumination value. The MCU is connected with the zigbee wireless transmitting module in a cable mode, and finally the actual detection illumination value is transmitted to the control unit for data processing through the zigbee wireless transmitting module and the zigbee wireless receiving module.
The control unit, the zigbee wireless receiving module, the liquid crystal display module, the selection switch, the driving unit, the relay set, the indicator light set and the power switch are integrated on the liquid crystal display panel.
The control unit adopts a singlechip to realize the functions of data acquisition, data processing, data storage, instruction sending and the like. The implementation mode is as follows: the singlechip acquires actual detection illuminance value E of each light emitting surface of the lamp transmitted by the zigbee wireless receiving modulecAnd calculating according to a preset operational relationship to obtain the luminous flux maintenance rate eta and the desk surface illumination EaThe calculated luminous flux maintenance rate eta and the desk surface illumination EaAnd comparing the standard value with a preset standard value, and sending a corresponding instruction to the liquid crystal display module and the indicating lamp set according to a comparison result to realize a warning function. Meanwhile, the single chip microcomputer is connected with the selection switch and the driving unit, and the single chip microcomputer can output driving signals to selectively light a row of lamps through the driving unit and the relay group by controlling the selection switch.
The method for processing the data by the single chip microcomputer specifically comprises the following steps:
calculating the luminous flux maintenance rate eta, eta ═ E of the lampc/E0；EcAn actual detection illuminance value detected by the illuminance sensor 3; e0Detecting an illuminance value for the lamp leaving a factory; distance D between illuminance sensor 3 and light emitting surface of lamp1Equal to the distance D between the illumination sensor and the light emitting surface of the lamp during the factory detection of the lamp3；D1When the average grain size is 0.05m, E0280 to 320 klx; d1When equal to 0.1m, E0Is 70 to 80 klx;
calculating the surface illumination E of the desk in the classroom according to the formulas (1) and (2)a；
K1Is a coefficient of proportionality that is,
K2to a fixed coefficient, K2＝0.55～0.6。
When the actual detection illuminance value E of the illuminance sensorc<0.7E0When the lamp is in use, the service life of the lamp is judged to be terminated, a WARNING pattern 'WARNING' is displayed through a corresponding mark of the liquid crystal display module, and meanwhile, the singlechip outputs a signal to control the highlighting of the No. 2 indicator lamp so as to remind a user of replacing a lamp with a problem;
when the actual detection illuminance value E of the illuminance sensorc≥0.7E0When the lamp is judged to be in a normal life cycle, the luminous flux maintenance rate eta is displayed through the corresponding mark of the liquid crystal display module, and the No. 1 indicating lamp is controlled to be highlighted;
when E isaWhen the illuminance of the desk surface in the classroom is lower than the national standard requirement, controlling a No. 3 indicator lamp to highlight, warning the user, and reminding the user that the illuminance of the lamp has affected the vision of the student to immediately replace the problem lamp;
when E isaAnd when the illuminance is more than or equal to 300lx, judging that the surface illuminance of the desk in the classroom meets the national standard requirement.
As shown in fig. 3, 4 and 5, the working flow of the light attenuation warning function of the lamps in the classroom is as follows:
in the liquid crystal display panel, when the WARNING pattern 'WARNING' 101 is highlighted, it indicates that the lamp luminous flux maintenance rate η corresponding to the position is less than 70%, and the lamp life is judged to be terminated and the lamp needs to be replaced according to the relevant regulations of the latest national standard GB/T24823 plus 2017 LED module performance requirement for ordinary illumination. The "70%" mark 102 indicates that the lamp luminous flux maintenance rate η is 70%, and belongs to a critical value for the end of life of the lamp. The "90%" mark 103 indicates that the lamp luminous flux maintenance η is 90%. The remaining numerical designations are analogous. The high intensity of the indicator light No. 1 104 indicates that the light environment in the classroom is harmless. When the indicator lamp 105 No. 2 is high in brightness, the national standard that the light flux maintenance rate eta of the lamp is lower than 70% exists in the teaching chamber is shown, the service life of the lamp is terminated, and a user is advised to replace the lamp with a problem. The No. 3 indicator lamp 106 indicates the surface illumination E of the desk in the classroom when being highlightedaAnd when the illuminance of the lamp is lower than the national standard requirement, the attention of the user is warned, the vision of students is influenced by the illuminance of the lamp, and the user needs to replace the problem lamp immediately. Selection switches 107 andthe power switch 108 is used for switching control of lamps in a classroom, and when the selection switch 107 is pressed 1 time, "R8" is displayed as "R1", which indicates that the power switch 108 can independently control the first row of lamps to be turned on and off, and so on, the 4 rows of lamps can be independently turned on and off. When the lamps in the classroom have problems, the selection switch 107 can be used for positioning the row where the fault lamp is located, and the function of facilitating the user to remove the fault is achieved.
When the control function of lighting the whole line of lamps is to be realized, the single chip microcomputer outputs a high level signal, the function of controlling strong electricity by weak electricity is realized through the relay, and the whole line of lamps and lanterns constant current source can be directly controlled to be connected with the commercial power 220V (AC), namely: and lighting the lamp function. The backlight sources of the indicator light 104, the indicator light 105, the indicator light 106 and the power switch 108 are realized by a single LED.
The above embodiments should not be limited to the protection scope of the present invention, and the lamp types are not limited to the flat lamp, but include a linear lamp, a bar lamp, a projection lamp, a down lamp, a spot lamp, and the like.
Claims (7)
1. A classroom LED lamp healthy illumination light decay warning device is characterized by comprising a control unit, n illumination sensors (3), n zigbee wireless transmitting modules, a zigbee wireless receiving module, a liquid crystal display module and an indicating lamp group, wherein the control unit is used for controlling the illumination sensors to emit light; wherein n is the number of LED lamps in a classroom; each illuminance sensor (3) is connected with the corresponding zigbee wireless transmitting module and is arranged in the same corresponding lamp, and the distance D between the illuminance sensor (3) and the light emitting surface of the lamp1Equal to the distance D between the illumination sensor and the light emitting surface of the lamp during the factory detection of the lamp3(ii) a The control unit is respectively connected with the zigbee wireless receiving module, the liquid crystal display module and the indicating lamp set, and the control unit, the zigbee wireless receiving module, the liquid crystal display module and the indicating lamp set are integrated on the liquid crystal display panel; the liquid crystal display module comprises display marks corresponding to the lamps; the indicating lamp group comprises a No. 3 indicating lamp (106); the actual detection illumination value collected by the illumination sensor (3) is sent to the control unit through the corresponding zigbee wireless sending module and the zigbee wireless receiving module, and the factory detection illumination value of the lamp is set as E0The actual detection illuminance value is EcThe luminous flux maintenance ratio eta is Ec/E0(ii) a For any lamp, when the actual detection illuminance value Ec≥0.7E0When the display mark is displayed, the control unit controls the display mark corresponding to the liquid crystal display module to display the luminous flux maintenance rate eta; when actually detecting the illuminance value Ec<0.7E0When the liquid crystal display module is in use, the control unit controls the corresponding mark of the liquid crystal display module to display the warning pattern; meanwhile, the control unit calculates the surface illuminance E of the desk in the classroom according to the formula (1)a；
K1Is a coefficient of proportionality that is,
D2the vertical distance between the light emitting surface of the lamp and the desk surface is set; k2To a fixed coefficient, K2＝0.55～0.6；
When E isaIf the current value is less than 300lx, the control unit controls a No. 3 indicator lamp (106) to highlight.
2. The classroom LED lamp health illumination light degradation warning device as claimed in claim 1, wherein the liquid crystal display panel is further provided with a selection switch, a driving unit, and a relay set; the control unit is respectively connected with the selection switch and the driving unit; the control unit controls the corresponding relay in the relay group to act through the driving unit according to the switch selection signal of the selection switch so as to enable the corresponding line of lamps to be lightened.
3. The classroom LED lamp health illumination light degradation warning device as claimed in claim 1, wherein the indicator light set further comprises a No. 1 indicator light (104); when a row of lamps is lighted, if all the lamps in the row actually detect the illuminance value EcAre all more than or equal to 0.7E0And if so, the control unit controls the No. 1 indicator lamp (104) to highlight.
4. The classroom LED lamp health illumination light degradation warning device as claimed in claim 1, wherein the set of indicator lights further comprises a No. 2 indicator light (105); when a row of lamps is lighted, if the actual detection illuminance value E of at least one lamp in the rowc<0.7E0And if so, the control unit controls the No. 2 indicator lamp (105) to highlight.
5. The classroom LED lamp health illumination light degradation warning device as claimed in claim 1, wherein the liquid crystal display panel is further provided with a power switch.
6. The classroom LED lamp health illumination light degradation warning device as claimed in claim 1, wherein the illumination sensor (3) is mounted on the frame of the lamp.
7. The classroom LED lamp health illumination light degradation warning device as claimed in claim 1, wherein the illumination sensor (3) is mounted on the telescopic rod (4); the telescopic rod (4) is hinged with the lamp frame (11); the illumination sensor (3) can be stored in the groove (2) of the lamp frame (11) by rotating or stretching the telescopic rod (4), and the distance between the illumination sensor (3) and the light emitting surface of the lamp can also be adjusted.
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| CN113411938A (en) * | 2021-05-18 | 2021-09-17 | 安徽理工大学 | Automatic lamp switching device |
| CN116017829A (en) * | 2022-12-30 | 2023-04-25 | 亚翔***集成科技（苏州）股份有限公司 | Dust-free room lamp service life monitoring method |
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| CN104833416B (en) * | 2015-05-20 | 2016-09-14 | 湖南工业大学 | The Students ' Learning illuminance of a kind of head of a family supervision tests wireless alarmer |
| CN105116848B (en) * | 2015-07-17 | 2018-04-10 | 大连理工大学 | Residential architecture indoor air chemical pollution and Health Category evaluation Internet of things system |
| CN105898965B (en) * | 2016-05-24 | 2018-05-22 | 浙江久良教育科技股份有限公司 | Headlamp and its method of work |
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