CN108536002A - School's Intelligent clock based on Internet of Things - Google Patents
School's Intelligent clock based on Internet of Things Download PDFInfo
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- CN108536002A CN108536002A CN201810128347.2A CN201810128347A CN108536002A CN 108536002 A CN108536002 A CN 108536002A CN 201810128347 A CN201810128347 A CN 201810128347A CN 108536002 A CN108536002 A CN 108536002A
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Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04R—RADIO-CONTROLLED TIME-PIECES
- G04R20/00—Setting the time according to the time information carried or implied by the radio signal
-
- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G13/00—Producing acoustic time signals
- G04G13/02—Producing acoustic time signals at preselected times, e.g. alarm clocks
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/10—Office automation; Time management
- G06Q10/109—Time management, e.g. calendars, reminders, meetings or time accounting
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/10—Office automation; Time management
- G06Q10/109—Time management, e.g. calendars, reminders, meetings or time accounting
- G06Q10/1093—Calendar-based scheduling for persons or groups
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/10—Services
- G06Q50/20—Education
- G06Q50/205—Education administration or guidance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
Abstract
The present invention relates to a kind of school's Intelligent clock based on Internet of Things, including：The centralized management architecture system of the clock system, network-based weather forecast system, the clock system based on APP and webpage setting, the intelligent clock system with the specific clock request of school, SDN that are automatically corrected based on radio wave.The beneficial effects of the invention are as follows：The present invention will introduce the concept of Internet of Things in clock system, makes it through WiFi module and is attached with Internet of Things, to realize automatically prover time.Working efficiency is improved while reducing human and material resources input.In addition to above functions, intelligent clock designed by the present invention can also automatically set upper and lower class by computer webpage or cell phone application and the tinkle of bells of test time is reported and by related sensor come determination of the environment situation, such as humiture, and shown by related display module.It provides convenience for numerous teachers and students, education more in the future provides support on hardware facility.
Description
Technical field
The present invention relates to a kind of Intelligent clocks, more specifically, it is related to a kind of school's Intelligent clock based on Internet of Things.
Background technology
The clock that the public places such as classroom use in campus at present is generally quartz clock, although the machine that quartz clock is more traditional
Tool clock and watch are accurately very much, but average daily error still nearly has one second, accumulates over a long period, and the error of single clock and watch continues to increase,
Meanwhile the error of every classroom clock and watch is again inconsistent, causes the time in all classrooms all not exclusively synchronous.It has a single function simultaneously,
School's clock cannot be embodied well to have the special feature that.
Invention content
The purpose of the present invention is overcome the deficiencies of the prior art and provide a kind of school's Intelligent clock based on Internet of Things.
School's Intelligent clock based on Internet of Things, including：
1) clock system automatically corrected based on radio wave
The intelligent clock has according to radio wave automatic time calibration function；It is connect equipped with magnetic rod antenna in signal acquisition module
The time signal for receiving the transmitting of national time service center carries out real-time decoding by the embedded system based on STC15W4K56S4, obtains
Time reference signal is taken, for correcting DS1302 chip clock values；
2) network-based weather forecast system
By included SHT10 chips by obtaining the warm and humid of the classroom environment with STC15W4K56S4 Communication in embedded system
Angle value is shown by big Matrix LED；The reception in computer or cell phone application about Weather information is realized by WiFI modules,
It is shown to LED；
3) clock system being arranged based on APP and webpage
School's intelligence master slave system based on APP is designed, including real-time jingle bell, weather are read, go to school and leave school time setting, examination
Function is arranged in time, is configured as needed, while the embedded single of school's intelligence master slave system is sent to by WiFi communication
Member；
The dynamic web page that school's Intelligent clock system is designed using ASP.NET 2.0 manages system, including real-time jingle bell, weather
Read, go to school and leave school the time setting, the test time setting etc. functions, be configured as needed, while being sent by WiFi communication
To the embedded unit of school's intelligence master slave system；
4) the intelligent clock system with the specific clock request of school
School, which has, to go to school and leave school and gives the correct time, and test time specific clock request, the present invention such as give the correct time has in hardware design
There is the setting command that the cell phone application that WiFi communication is automatically accepted and computer webpage are sent, by logical with DS1302 clock chips
Letter, according to corresponding timing node, driving voice module sends out corresponding information, notifies student's progress is relevant to attend class or take an examination
Temporal information；
5) the centralized management architecture system of SDN
The framework does unified management and control by multiple AP of controller local area network, and the identity for being responsible for accounting for a little by controller is recognized
Card, access management, and the management interface of the network equipment and the statistics interface of the whole network operating status are provided upwards；Controller can be run
In distal end；SDN controllers can be disposed in distal end simultaneously, are configured for the flow table to OpenFlow interchangers, to user's
Permission is managed and obtains link-state information, and SDN controllers provide northbound interface, and upper layer application can pass through these north orientations
Interface obtains wired link state, according to strategy, manages the access authority for accounting for a little；By DHCP, NAT server local area
The IP distribution of net, NAT address conversions are managed collectively, and AP only undertakes data forwarding function and accounts for point discovery pipe in ECWLAN frameworks
Function is managed, remaining management function is undertaken by controller；
In data plane, AP receives air message, is converted into the frame of ether format, and be sent to OpenFlowSwitch,
OpenFlowSwitch is forwarded according to flow table, for accessing the message of Internet, is sent to after being NAT by gateway
Internat；In data plane, AP receives air message, is converted into the frame of ether format, and be sent to OpenFlowSwitch,
OpenFlowSwitch is forwarded according to flow table, for accessing the message of Internet, is sent to after being NAT by gateway
Internat。
The beneficial effects of the invention are as follows:The present invention will introduce the concept of Internet of Things in clock system, make it through WiFi
Module is attached with Internet of Things, to realize automatically prover time.Work is improved while reducing human and material resources input
Efficiency.In addition to above functions, intelligent clock can also automatically be set by computer webpage or cell phone application designed by the present invention
Upper and lower class and the tinkle of bells of test time are reported and by related sensor come determination of the environment situation, such as humiture, and by
Related display module is shown.It provides convenience for numerous teachers and students, education more in the future provides branch on hardware facility
It holds.For the features such as under the high density WiFI user environments of classroom, traditional WLAN frameworks management and control ability is weak, and flexibility is poor, it is proposed that
A kind of centralized management framework ECWLAN of combination SDN, the framework are with high flexibility, expansion, the strong feature of management and control ability
Classroom high density WiFI communications provide technological means.
Description of the drawings
Fig. 1 is school's Intelligent clock system principle diagram；
Fig. 2 is STC15W4K56S4 chip figures；
Fig. 3 is AC power DC power figure；
Fig. 4 is the PCB figures of ESP8266；
Fig. 5 is dot matrix screen schematic diagram；
Fig. 6 is voice module circuit diagram；
Fig. 7 is DS1302 circuit diagrams；
Fig. 8 is ECWLAN Organization Charts；
Fig. 9 is ECWLAN data plane schematic diagrames；
Figure 10 is ECWLAN control function floor map.
Specific implementation mode
The present invention is described further with reference to embodiment.The explanation of following embodiments is merely used to help understand this
Invention.It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, also
Can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the protection domain of the claims in the present invention
It is interior.
The present invention includes that following four parts form：It is the clock system that is automatically corrected based on radio wave, network-based
Weather forecast system, the clock system based on APP and webpage setting, the intelligent clock system with the specific clock request of school.
Its design is as follows:
(1) clock system automatically corrected based on radio wave
The intelligent clock has according to radio wave automatic time calibration function.Magnetic rod antenna is devised in signal acquisition module
The 68.5kHz long wave time signals for receiving national time service center transmitting, by the embedded system based on STC15W4K56S4 into
Row real-time decoding obtains time reference signal, for correcting DS1302 chip clock values.The experimental results showed that the clock is being taught
Indoor use can realize that the display time is accurate and synchronous.
(2) network-based weather forecast system
By included SHT10 chips by obtaining the warm and humid of the classroom environment with STC15W4K56S4 Communication in embedded system
Angle value is shown by big Matrix LED.The reception in computer or cell phone application about Weather information is realized by WiFI modules,
It is shown to LED, to realize the real-time display of weather.
(3) clock system being arranged based on APP and webpage
School's intelligence master slave system based on APP is devised, including real-time jingle bell, weather read, time setting of going to school and leaving school, examine
The functions such as time setting are tried, are configured as needed, while being sent to the insertion of school's intelligence master slave system by WiFi communication
Formula unit, to realize that artificial setting has the function of school's clock feature.
The dynamic web page that school's intelligence master slave system is devised using ASP.NET 2.0 manages system, including real-time jingle bell, day
The functions such as gas is read, the time of going to school and leaving school is arranged, test time setting, are configured, while being sent out by WiFi communication as needed
The embedded unit of school's intelligence master slave system is given, to realize that artificial setting has the function of school's clock feature.
(4) the intelligent clock system with the specific clock request of school
School, which has, to go to school and leave school and gives the correct time, and test time specific clock request, the present invention such as give the correct time has in hardware design
There is the setting command that the cell phone application that WiFi communication is automatically accepted and computer webpage are sent, by logical with DS1302 clock chips
Letter, according to corresponding timing node, driving voice module sends out corresponding information, notifies student's progress is relevant to attend class or take an examination
Temporal information.
As shown in Figure 1, hardware master-plan is as follows：
(1) Embedded System Design
It devises shown in the embedded system based on STC15W4K56S4 (such as Fig. 2), STC15W4K56S4 is a ultralow
Power consumption, high speed (0-35M), high reliability, superpower jamproof microprocessor, wide operating voltage (2.5V-5.5V) possess 6 tunnels
15 high speed PWM with dead zone function, integrate high-precision R/C clocks, and Flash program memory is up to 48KB, the large capacity of 4KB
SRAM, tape comparator can do low battery detection, there is hardware watchdog, and USB is supported to directly download.
(2) electric power management circuit
Power supply uses two ways, one is being supplied using 220V electric mains, is carried out using following scheme (such as Fig. 3)
Wiring board DC power supply is converted:
Real time monitoring voltage value is carried out using monitoring cell electricity quantity management module, is supplied if there is the under-voltage battery that will be switched to
Electricity.By this method, realize that Intelligent clock when having a power failure runs well.
(3) WIFI module
WIFI function mainly realizes that ESP8266 is a Wi- that is complete and establishing one's own system by ESP8266 (such as Fig. 4)
Fi Networking Solutions ＆ provisioneds can carry software application, or unload all Wi-Fi network functions by another application processor,
For ESP8266 as softAP, mobile phone, computer, user equipment, other ESP8266station interfaces etc. can conducts
Station is connected into ESP8266, and group builds up a LAN, and ESP8266 is connected into as station by router (AP)
Internet can be uploaded, downloading data to cloud server.User can use mobile terminal (mobile phone, notebook etc.) at any time, lead to
The situation for crossing high in the clouds monitoring ESP8266 modules sends control instruction to ESP8266 modules.
(4) display module
It is mainly completed by LED dot matrix screens, dot matrix screen such as Fig. 5, is cascaded by 8 pieces and forms a display
Screen, the dot matrix Song typeface character library of the general 16*16 that we are using dot matrix Display of Chinese characters, so-called 16*16 is that each Chinese character exists
It is shown in longitudinal and transverse each 16 points of region.That is the dot matrix of a 16*16 is combined into four 8*8 dot matrix.For example it to show
Showing " you ", then corresponding point will be lighted, and since dot matrix is that low level is effective, and be that high level is effective on line on alignment, institute
To show " you " word, then its position code information will negate, i.e., all row (13~16 foot) are sent (0xF7,0x7F), and first
Row (9 foot) send 1 signal, and then the first row send 0.The second row data to be shown (13~16 foot) are sent to send (0xF7,0x7F) again, and
Second row (14 foot) send 1 signal.The rest may be inferred, as long as each row of data shows that time interval is enough short, utilizes the suspenopsia of human eye
Effect, just can be appreciated that " a you " word after sending 16 data to scan through 16 rows in this way；Second of method for sending data is type matrix letter
It is also same reason number to be sent on line and to scan alignment again.Equally illustrated with " you " word, 16 rows (9,14,8,12,1,7,2,
5) (, 0x00,0x00) is sent on and first row (13 foot) give, " 0 ".Similarly scan secondary series.When having sent 16 data on line and
Alignment scans 16 the latter " you " words and also just shows.
(5) voice module
It is an offer serial ports that voice module, which uses YX5200-24SS chips, YX5200-24SS chips such as Fig. 6, X5200,
MP3 chips, the perfect integration hard decoder of MP3, WMV.FAT16, FAT32 text are supported in software support TF card driving simultaneously
Part system.It can be completed by the instruction of simple serial ports and play specified music, and how to play the functions such as music, without numerous
Trivial bottom operation, easy to use, reliable and stable is the maximum feature of such product.
(6) clock measurement module
As shown in fig. 7, the real-time clock core of a kind of high-performance that DS1302, which is DALLAS companies of the U.S., to be released, low-power consumption
Piece is added 31 byte static state RAM, is synchronized and communicated with CPU using SPI three-wire interfaces, and burst mode can be used and once pass
Send the clock signal and RAM data of multiple bytes.Real-time clock can provide the second, point, when, day, week, Month And Year.Operating voltage
It is wide up to 2.5~5.5V.
(7) temperature and humidity acquisition module
Temperature and humidity measurement is measured and is shown humiture using SHT10.Humiture calculates as follows：Since SHT10 is to adopt
The temperature-sensing element (device) made of PTAT gap materials, with good linear convergent rate.It can will be true by following formula (1)
Temperature value calculate：
Tc=d1+d2×Cout (1)
In formula：d1And d2For particular factor, d1, d2Value it is related with temperature resolution, correspondence is as shown in table 1.
1 temperature correction facotor of table
| Cout | d1 | d2 |
| 14Bit(5V) | -40 | 0.01 |
| 12Bit(5V) | -40 | 0.04 |
For humidity, SHT10 can directly export digital quantity humidity value by DATA data/address bus.The humidity is " opposite
Humidity " needs just obtain accurate humidity value after carrying out linear compensation and temperature-compensating.Since relative humidity number is defeated
Go out characteristic in centainly non-linear, therefore in order to compensate for the non-linear of humidity sensor, humidity value can be corrected by formula (2)：
In formula：RHLinearFor the humidity value after linear compensation, HoutFor relative humidity measurements, C1、C2、C3It is linear
Penalty coefficient is related with humidity resolution ratio.
Influence due to temperature to humidity is fairly obvious, and 25 DEG C of actual temperature and test reference temperature are different, institute
It is necessary to carry out temperature-compensating to the humidity value after linear compensation.Compensation formula is as follows：
RHTrue=(TC-25)×(t1+t2×Hout)+RHLinear (3)
In formula：RHTrueFor the humidity value after linear compensation and temperature-compensating, TCFor testing humidity value when temperature, t1
And t2It is related with humidity resolution ratio for humidity penalty coefficient.C1、C2、C3And t1、t2Correspondence it is as shown in table 2.
2 humidity correction factor of table
| Hout | C1 | C2 | C3 | t1 | t2 |
| 12Bit | -4 | 0.0405 | -2.8*10-6 | 0.01 | 0.000 08 |
| 8Bit | -4 | 0.6480 | -7.2*10-4 | 0.01 | 0.001 28 |
The present invention uses the measurement accuracy of SHT10 acquiescences, i.e. temperature is 14bit, humidity 12bit.
As shown in figure 8, the centralized management framework ECWLAN designs of SDN are as follows：
The framework does unified management and control by multiple AP of controller local area network, and the identity for being responsible for accounting for a little by controller is recognized
Card, access management, and the management interface of the network equipment and the statistics interface of the whole network operating status are provided upwards, in order to which upper layer is answered
Development deployment.Controller may operate at distal end.SDN controllers can be disposed in distal end simultaneously, for exchanging OpenFlow
The flow table of machine is configured, and the permission of user is managed and is obtained link-state information, and SDN controllers provide north orientation and connect
Mouthful, upper layer application can obtain wired link state, according to certain strategy, to accounting for access authority a little by these northbound interfaces
It manages.It is managed collectively by the IP distribution of DHCP, NAT server local area network, NAT address conversions, AP in ECWLAN frameworks
It is the equipment of a unusual lightweight, only undertakes data forwarding function and account for point discovery management function, remaining management function is by controlling
Device processed undertakes.
In data plane, AP receives air message, is converted into the frame of ether format, and be sent to OpenFlow Switch,
OpenFlow Switch are forwarded according to flow table, for accessing the message of Internet, are sent to after being NAT by gateway
Internat.Data plane structure is as shown in Figure 9.In data plane, AP receives air message, is converted into the frame of ether format,
And OpenFlow Switch are sent to, OpenFlow Switch are forwarded according to flow table, for accessing the report of Internet
Text is sent to Internat after being NAT by gateway.
As shown in Figure 10, ECWLAN frameworks have the characteristics that：
(1) pipe diameter design concentrated, controller are managed control to the wireless device in entire LAN, solve biography
The troublesome problem of configuration, update, grasps the operating status of the whole network, support is provided for the development deployment of upper layer application in system network.
(2) authentication, Identity Management are concentrated on into controller, simplifies the function of AP, while controller accounts for a little the whole network
Identity, state have a global control, and facility is provided for the safety management of network.
(3) simplified programmable functions are provided, the interface of configuration AP operating parameters is provided to upper layer application, acquisition net is provided
The interface of network state statistical information, using these interfaces, user can carry out simple strategy generating and execute experiment.
(4) to the support of SDN, AP uses OpenVSwitch as bridge, can be used SDN controllers to OpenVSwitch
Flow table issuance is carried out, link state obtains work.
By the design of the WiFI communication constructions, the requirement of classroom high density WiFI communications can be realized well, is
The present invention provides communication technique supports.
There is innovative invention by above-mentioned, realize school's Intelligent clock design based on Internet of Things.Pass through the invention
It provides convenience for numerous teachers and students, education more in the future provides support on hardware facility.
Claims (1)
1. a kind of school's Intelligent clock based on Internet of Things, which is characterized in that including：
1) clock system automatically corrected based on radio wave
The intelligent clock has according to radio wave automatic time calibration function；Magnetic rod antenna receiving country is equipped in signal acquisition module
The time signal of family's time service center transmitting carries out real-time decoding by the embedded system based on STC15W4K56S4, when acquisition
Between reference signal, for correcting DS1302 chip clock values；
2) network-based weather forecast system
By carrying SHT10 chips by obtaining the humiture of the classroom environment with STC15W4K56S4 Communication in embedded system
Value, is shown by big Matrix LED；The reception in computer or cell phone application about Weather information is realized by WiFI modules, is shown
Show LED；
3) clock system being arranged based on APP and webpage
School's intelligence master slave system based on APP is designed, including real-time jingle bell, weather read, go to school and leave school time setting, test time
Function is set, is configured as needed, while being sent to the embedded unit of school's intelligence master slave system by WiFi communication；
The dynamic web page that school's Intelligent clock system is designed using ASP.NET 2.0 manages system, including real-time jingle bell, weather are read
Take, go to school and leave school the time setting, the test time setting etc. functions, be configured as needed, while being sent to by WiFi communication
The embedded unit of school's intelligence master slave system；
4) the intelligent clock system with the specific clock request of school
School, which has, to go to school and leave school and gives the correct time, and the test time such as gives the correct time at the specific clock request, the present invention have in hardware design from
The setting command that the dynamic cell phone application for receiving WiFi communication and computer webpage are sent, passes through the communication with DS1302 clock chips, root
According to corresponding timing node, driving voice module sends out corresponding information, and student is notified to carry out relevant attend class or the test time
Information；
5) the centralized management architecture system of SDN
The framework does unified management and control by multiple AP of controller local area network, and is responsible for accounting for authentication a little by controller,
Access management, and the management interface of the network equipment and the statistics interface of the whole network operating status are provided upwards；Controller may operate at
Distally；SDN controllers can be disposed in distal end simultaneously, are configured for the flow table to OpenFlow interchangers, to the power of user
Limit is managed and obtains link-state information, and SDN controllers provide northbound interface, and upper layer application can be connect by these north orientations
Mouthful, wired link state is obtained, according to strategy, the access authority for accounting for a little is managed；By DHCP, NAT server local area network
IP distribution, NAT address conversions be managed collectively, AP only undertakes data forwarding function and accounts for point discovery management in ECWLAN frameworks
Function, remaining management function are undertaken by controller；
In data plane, AP receives air message, is converted into the frame of ether format, and be sent to OpenFlowSwitch,
OpenFlowSwitch is forwarded according to flow table, for accessing the message of Internet, is sent to after being NAT by gateway
Internat；In data plane, AP receives air message, is converted into the frame of ether format, and be sent to OpenFlowSwitch,
OpenFlowSwitch is forwarded according to flow table, for accessing the message of Internet, is sent to after being NAT by gateway
Internat。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810128347.2A CN108536002A (en) | 2018-02-08 | 2018-02-08 | School's Intelligent clock based on Internet of Things |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111208725A (en) * | 2020-02-26 | 2020-05-29 | 无锡职业技术学院 | Multifunctional alarm clock system for classroom |
| CN111258208A (en) * | 2020-03-08 | 2020-06-09 | 东华理工大学 | Embedded intelligent digital clock |
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