CN103679592A - College classroom perception management system - Google Patents
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Abstract
A college classroom perception management system is disclosed. According to the system, data are acquired at real time by an optical detection sensor, an infrared induction sensor and a temperature sensor; data are processed by a single-chip microcomputer; and finally, whether lighting circuits and electric fan circuits in a classroom are turned on or turned off is judged. Thus, the effect of saving resources is achieved. On the other hand, real-time condition of the classroom is uploaded to a cloud server by the single-chip microcomputer; the cloud server analyzes and processes the data and provides a mobile client with a query interface; students can understand classroom situation through the mobile client or a display module on the door of the classroom, and simultaneously, the mobile client can input time quantum of using the classroom and provides current location data to put forward a query request to the cloud server; and the cloud server provides the optimum classroom recommend according to classroom curriculum arrangement, localization site of the client and the time quantum of using the classroom. The system provided by the invention has low cost, is simple to install and convenient to operate, and has functions of saving energy and reasonably allocating classroom resources.
Description
Technical field
The technology of the present invention field is miniature control system field, is specially classroom environment automatic sensing, and classroom information mobile terminal demonstration, mobile terminal and servers' data are mutual and control classroom circuit to reach the field of energy conservation object.
Background technology
At present, with regard to colleges and universities, some classmate of ubiquity goes around whole teaching building and is difficult to the classroom of finding one can Gong review one's lessons, and in each classroom of another teaching building, only there is very few a few people, in classroom, review one's lessons to be apprised of has class can only be forced to heavily seek classroom midway at once, the classroom having evening does not have thin and weak man but all opening, sometimes weather not thermoelectricity fan but opening, dislike cold classmate initiatively not close electric fan but sit on the seat away from electric fan.In colleges and universities, most of colleges and universities are free power supplies, thereby have caused student's economy consciousness weak, according to incompletely statistics, annual only this item, China has just wasted the civilian electricity of more than one hundred million degree.Because classroom information is not shared in time, and the classroom resources unreasonable distribution causing has not only caused the waste of the energy, every day, all this takes time simultaneously looks for self-study classroom also to waste classmates greatly the quality time that can be used for study.
About University Classroom's perception management system, have at present some researchs, but these researchs all there is no to implement till now in colleges and universities yet, its reason is:
(1) the unified information sharing platform of neither one, classmates still need to take time and look for self-study classroom;
(2) each classroom is not linked to be to a network, system just, for certain independent classroom service, makes classroom's resource maldistribution, causes huge waste;
(3) can only provide the classroom of current free time, a classroom can be used now, and just there is class in this classroom after a while, unrealistic;
(4) be independent detection light or independent detected temperatures, system is not implemented to control in conjunction with classroom number;
(5) not high enough to the demographics precision in classroom;
(6) existing system price is high, and University Classroom's is many, and one-time investment is large, and a lot of colleges and universities are reluctant to mean this and drop into excessive financial resources this control system is installed;
(7) existing product installation difficulty is large, need to do larger transformation to classroom, and large-scale transformation is done in the moulding of University Classroom's facility, gigantic project, and feasibility is low;
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of University Classroom's perception management system, the data that this system arrives according to light detecting sensor, infrared induction sensor, temperature sensor Real-time Collection, via single-chip microcomputer, data are processed, finally judge the unlatching of classroom lighting circuit and fan circuit or close, played the effect economizing on resources, at classroom no one, light, the in the situation that enough strong, temperature being not high enough, comprehensively judge the break-make of classroom circuit, cut the waste; On the other hand, single-chip microcomputer is uploaded to cloud server by the real-time condition in this classroom, cloud server is processed these data analyses, in conjunction with school timetable, arrange situation, the position location of client and the time period in required use classroom, providing current best classroom recommends, to mobile client, provide query interface, classmates can understand classroom information and find in time suitable self-study classroom, reach the function of classroom resources reasonable distribution simultaneously.
Technical scheme of the present invention is: University Classroom's perception management system is by single chip control module, cloud server, mobile client, display module, light detecting sensor, infrared induction sensor, relay, and temperature sensor forms, light detecting sensor and temperature sensor are arranged on the centre position in classroom, respectively light and temperature are carried out to Real-Time Monitoring, infrared induction installation of sensors testing staff on doorframe passes in and out so that the number in statistics classroom, relay is connected with fan circuit with light circuit respectively, single chip control module and display module are arranged on the wall on doorway, be convenient to student and check classroom information, light detecting sensor, infrared induction sensor and temperature sensor are real-time transmitted to single chip control module by the data that collect, single chip control module is processed data analysis, by Control light circuit, the unlatching of fan circuit or close, simultaneously, single chip control module arrives cloud server by classroom real time environment data upload, cloud server is processed these data analyses, and provide query interface to mobile client, students can be understood by the display module on mobile client or doorway, classroom the situation in classroom, mobile client can be inputted the time period in own required use classroom simultaneously, and provide current locator data, cloud server is according to classroom course arrangement, the time period in the position location of client and required use classroom, providing best classroom recommends.It is characterized in that cost is low, install simple and easy, easy to operate, the function of realize saving the energy, reasonable distribution classroom resources.
Single-chip microcomputer in single chip control module 1 is the C51 single-chip microcomputer kernel in nRF24E1 one-chip computer module, light detecting sensor, infrared induction sensor, temperature sensor information are processed, control the break-make of light circuit, fan circuit, classroom information exchange is crossed to communication sends cloud server to and carries out statistical study simultaneously, cloud server is comprehensively analyzed data, return to best classroom and recommend, and show.
Service range computational algorithm and the algorithm that Geohash algorithm combines when cloud server 2 is recommended best classroom, dispose simple and conveniently, and efficiency is higher.Abstract apart from computational algorithm is the calculating of 2 distances of sphere, i.e. the longitude and latitude of 2 on known sphere, A ($ radLat1, $ radLng1), B ($ radLat2, $ radLng2), by the cosine law and radian computing method, the formula A finally deriving is:
$s=acos(cos($radLat1)*cos($radLat2)*cos($radLng1-$radLng2)+sin($radLat1)*sin($radLat2))*$R;
Geohash algorithm is the longitude and latitude of two to be weaved into the character string of one dimension, and latitude scope (90,90) is divided equally into two intervals (90,0), (0,90), if target latitude is positioned at previous interval, be encoded to 0, otherwise be encoded to 1, and then by (0,90) be divided into (0,45), (45,90) two intervals, and the rest may be inferred, longitude also uses the same method, and then merges longitude and latitude coding, from high to low, first get a longitude, get again a latitude and draw coding, finally with 0-9, b-z(, remove a, i, l, o) these 32 letters carry out base32 coding.
Light detecting sensor is used photoresistance series connection potentiometer.
Infrared induction sensor is comprised of two couples of infrared receiving/transmission pipe E3F-5DN1-5L, personnel's turnover detected according to the break-make of infrared receiving/transmission pipe link, according to the break-make order of two pairs of infrared receiving/transmission pipe links successively, can judgement personnel be into or go out.
The relay of controlling light circuit and fan circuit unlatching or cutting out is single-phase solid relay SSR-40LA.
The temperature sensor that room temperature is carried out to Real-Time Monitoring is DS18B20 temperature sensor.
Beneficial effect of the present invention is:
1. because modules interacts, make each classroom be linked to be a network, cloud server carries out analyzing and processing to the classroom information receiving, and plans as a whole to distribute classroom;
2. the cloud server of design provides data query interface to mobile client, and classmate can grasp classroom information whenever and wherever possible, saves time;
3. the time period in the school timetable arrangement, client location data and the required use classroom that pre-enter is recommended to combine in the classroom that cloud server provides, and user can find a classroom in this free time time period nearby;
4. by infrared inductor sensor, light detecting sensor and temperature sensor perception classroom environment, control classroom connecting and disconnecting of the circuit, save the energy;
5. native system is easy for installation, does not need classroom to carry out large-scale redevelopment;
6. native system design is ingenious, and outward appearance is succinct, does not need to take larger space, operates simple and easy.
Accompanying drawing explanation
Fig. 1 is the fundamental diagram of University Classroom's perception management system.
Description of reference numerals: 1-single chip control module; 2-cloud server; 3-mobile client; 4-display module; 5-light detecting sensor; 6-infrared induction sensor; 8-humidity sensor; 7-relay; 9-relay.
Fig. 2 is the scheme of installation in kind of University Classroom's perception management system.
Description of reference numerals: 10-electric light; 11-electric fan.
Embodiment
Below in conjunction with Figure of description, the present invention is described in further detail.
Single unit system structure of the present invention as shown in Figure 1, by single chip control module 1, cloud server 2, mobile client 3, display module 4, light detecting sensor 5, infrared induction sensor 6, the large module of temperature sensor 8 and relay 7,9 eight forms.Light detecting sensor 5, infrared induction sensor 6, temperature sensor 8 is real-time transmitted to single chip control module 1 by the data that collect, display module 4 shows these information in real time, 1 pair of data of single chip control module are carried out analyzing and processing, by relay 7, 9 control light circuit, the unlatching of fan circuit or close, one-chip computer module 1 arrives cloud server 2 by these data upload simultaneously, cloud server is processed these data analyses, in conjunction with school timetable, arrange situation, the time period in the position location of client and required use classroom, providing current best classroom recommends, to mobile client, provide query interface simultaneously, classmates can understand classroom information and find in time suitable self-study classroom, reach the function of classroom resources reasonable distribution.
Accompanying drawing 2 is scheme of installations in kind of apparatus of the present invention.
University Classroom's perception management system is a set of complete device connecting in conjunction with University Classroom's available circuit.First the centre position that the light detecting sensor of native system and temperature sensor is arranged on to classroom, infrared induction installation of sensors is on the doorframe in classroom, relay is connected in series to respectively on the live wire of light circuit and fan circuit simultaneously, finally opens control module and can complete installation.
After native system starts, light detecting sensor 5, infrared induction sensor 6, 8 pairs of classroom environments of temperature sensor carry out Real-Time Monitoring, and real time data is sent into single chip control module 1, initial setting up religion occupancy is 0, sequencing by the break-make of two pairs of infrared receiving/transmission pipe links in infrared induction sensor judges entering or going out of personnel, number in control module real-time update classroom, while only having classroom to have people and classroom temperature higher than setting threshold, control module is to a 5V voltage of relay output, by relay, open fan circuit, while only having classroom to have people and light lower than setting threshold, control module is just by relay turn on lights optical circuit, while meeting above-mentioned situation, control module is not by cut-off electric fan or light circuit, single chip control module is uploaded to cloud server by the real-time condition in this classroom, cloud server is processed these data analyses, cell-phone customer terminal can be uploaded time period and the current locator data in required use classroom, cloud server arranges situation in conjunction with school timetable, providing current best classroom recommends, to mobile client, provide query interface simultaneously, classmates can understand classroom information and find in time suitable self-study classroom, reach the function of classroom resources reasonable distribution.
Concrete scheme of material selection of the present invention below.
Because the control of native system is relatively simple, and consider that user needs to communicate in implementation process, we select nRF24E1 as single chip control module 1, and this module has radio communication function, can guarantee the stable transfer of data within the scope of teaching building.
The relay of controlling light circuit and fan circuit unlatching or cutting out is single-phase solid relay SSR-40LA, between relay input and output, adopt photoelectric coupling, therefore break-make does not have movable contact component, has the features such as reliable operation, switching speed are fast, noiselessness, the life-span is long, volume is little, no-spark, anti-corrosion explosion-proof antivibration.
In order to realize the simplification of system and to reduce costs, native system adopts common cathode charactron to show the number in current classroom and the current best classroom that cloud server is recommended.Charactron has with low cost, clear display and the simple advantage of control, and native system is used static display packing, does not need BCD code translator.
Temperature sensor need to be quick on the draw to temperature variation, and economical reliable, we have selected DS18B20.DS18B20 volume is little, economical, flexible.Can give full play to the strong point of " one-wire bus ".DS18B20 only has 3 pins, is respectively VCC, and GND and data line support " one-wire bus " interface, are applicable to very much the control of 51 single-chip microcomputers.Measuring temperature range is-55 ℃～+ 125 ℃, and within the scope of-10～+ 85 ℃, precision is ± 0.5 ℃.Scene temperature, directly with the digital form transmission of " one-wire bus ", has improved the anti-interference of system greatly.The scene temperature that is suitable for rugged surroundings is measured, as: environment control, equipment or process control, thermometric class consumption electronic product etc.
The algorithm that when cloud server 2 is recommended best classroom, service range computational algorithm combines with Geohash algorithm.
Abstract apart from computational algorithm is the calculating of 2 distances of sphere, i.e. the longitude and latitude of 2 on known sphere, A ($ radLat1, $ radLng1), B ($ radLat2, $ radLng2), by the cosine law and radian computing method, the formula A finally deriving is:
$s=acos(cos($radLat1)*cos($radLat2)*cos($radLng1-$radLng2)+sin($radLat1)*sin($radLat2))*$R;
The online Google that mostly uses is disclosed apart from computing formula at present, and derivation formula B is:
$s=2*asin(sqrt(pow(sin(($radLat1-$radLat2)/2),2)+cos($radLat1)*cos($radLat2)*pow(sin(($radLng1-$radLng2)/2),2)))*$R;
Wherein: $ radLat1, $ radLng1, $ radLat2, $ radLng2 unit are radian; $ R is earth radius.
Geohash algorithm is the longitude and latitude of two to be weaved into the character string of one dimension, and latitude scope (90,90) is divided equally into two intervals (90,0), (0,90), if target latitude is positioned at previous interval, is encoded to 0, otherwise is encoded to 1.And then (0,90) is divided into (0,45), and (45,90) two intervals, and the rest may be inferred, longitude also uses the same method, and then merges longitude and latitude coding, from high to low, first gets a longitude, then gets a latitude and draw coding.Finally with 0-9, b-z(, removing a, i, l, o) these 32 letters carry out base32 coding.For example now the longitude and latitude of client is encoded to wm3yr31d2524, in SQL, and near all places LIKE ' wm3yr3% ' can inquire about.
First we the longitude and latitude in each classroom coding, simultaneously because the corresponding classroom of each floor longitude and latitude is identical, increase by a bit representation floor after coding.Server is when calculating best classroom, first from database, filter out the available classroom meeting the requirements of the customers, near available classroom going out by Geohash algorithm queries again, finally distance is carried out near the classroom inquiring and calculate from the nearest classroom of user, for the classroom that the situation floor of identical longitude and latitude is low, preferentially recommend.The mass data of when algorithm combining with Geohash algorithm apart from computational algorithm is avoided independent service range computational algorithm, being found range in each classroom is processed, and ratio of precision is used separately Geohash algorithm to want high simultaneously.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should be appreciated that; the present invention is not restricted to the described embodiments; that in above-described embodiment and instructions, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications; these changes and improvements all fall in the claimed scope of the invention, and the claimed scope of the present invention is defined by its equivalent of appending claims.
Claims (7)
1. a University Classroom's perception management system, it is characterized in that, comprise single chip control module (1), cloud server (2), mobile client (3), display module (4), light detecting sensor (5), infrared induction sensor (6), relay (7), and temperature sensor (8) (9), light detecting sensor (5) and temperature sensor (8) are arranged on the centre position in classroom, infrared induction sensor (6) is arranged on doorframe, relay (7), (9) be connected with fan circuit with light circuit respectively, single chip control module (1) and display module (4) are arranged on the wall on doorway, light detecting sensor (5), infrared induction sensor (6) is connected with single chip control module (1) with temperature sensor (8), by relay (7), (9) control light circuit, the unlatching of fan circuit or close, by controlling the break-make of light and fan circuit, reach energy-conservation target, single chip control module (1) is connected with cloud server (2), cloud server (2) and mobile client (3) wireless connections, interaction data, and provide inquiry service interface, students can be passed through the situation in display module (4) the understanding classroom on mobile client (3) or doorway, classroom.
2. University Classroom's perception management system according to claim 1, is characterized in that: the single-chip microcomputer in single chip control module (1) is the nRF24E1 single-chip microcomputer in 51 single-chip microcomputers.
3. University Classroom's perception management system according to claim 1, is characterized in that: the algorithm that when cloud server (2) is recommended best classroom, service range computational algorithm combines with Geohash algorithm,
Abstract apart from computational algorithm is the calculating of 2 distances of sphere, i.e. the longitude and latitude of 2 on known sphere, A ($ radLat1, $ radLng1), B ($ radLat2, $ radLng2), by the cosine law and radian computing method, the formula A finally deriving is:
$s=acos(cos($radLat1)*cos($radLat2)*cos($radLng1-$radLng2)+sin($radLat1)*sin($radLat2))*$R;
Geohash algorithm is the longitude and latitude of two to be weaved into the character string of one dimension, and latitude scope (90,90) is divided equally into two intervals (90,0), (0,90), if target latitude is positioned at previous interval, be encoded to 0, otherwise be encoded to 1, and then by (0,90) be divided into (0,45), (45,90) two intervals, and the rest may be inferred, longitude also uses the same method, and then merges longitude and latitude coding, from high to low, first get a longitude, get again a latitude and draw coding, finally with 0-9, b-z(, remove a, i, l, o) these 32 letters carry out base32 coding.
4. University Classroom's perception management system according to claim 1, is characterized in that: light detecting sensor (5) is used photoresistance series connection potentiometer.
5. University Classroom's perception management system according to claim 1, is characterized in that: infrared induction sensor (6) uses two couples of infrared receiving/transmission pipe E3F-5DN1-5L.
6. University Classroom's perception management system according to claim 1, it is characterized in that: that control light circuit and fan circuit unlatching or the relay (7) of closing, (9) is single-phase solid relay SSR-40LA, between relay input and output, adopts photoelectric coupling.
7. University Classroom's perception management system according to claim 1, is characterized in that: the temperature sensor (8) that room temperature is carried out to Real-Time Monitoring is DS18B20 temperature sensor.
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105005216A (en) * | 2015-05-27 | 2015-10-28 | 西南交通大学 | Intelligent classroom energy-saving control and state inquiry system |
| CN105046418A (en) * | 2015-06-30 | 2015-11-11 | 成都亿邻通科技有限公司 | Intelligent pushing method |
| CN105160519A (en) * | 2015-09-07 | 2015-12-16 | 携程计算机技术（上海）有限公司 | Conference room state updating method and updating system |
| CN105243622A (en) * | 2015-10-15 | 2016-01-13 | 桂林电子科技大学 | Intelligent management system for classroom and management method for intelligent management system |
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| CN106102280A (en) * | 2016-08-10 | 2016-11-09 | 安徽喜悦信息科技有限公司 | A kind of intelligent classroom lighting control system |
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| CN105005216A (en) * | 2015-05-27 | 2015-10-28 | 西南交通大学 | Intelligent classroom energy-saving control and state inquiry system |
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