CN207359934U - A kind of intelligent elevated blackboard in classroom - Google Patents
A kind of intelligent elevated blackboard in classroom Download PDFInfo
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- CN207359934U CN207359934U CN201621418415.1U CN201621418415U CN207359934U CN 207359934 U CN207359934 U CN 207359934U CN 201621418415 U CN201621418415 U CN 201621418415U CN 207359934 U CN207359934 U CN 207359934U
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- module
- blackboard
- microcontroller
- output terminal
- input terminal
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Abstract
The utility model relates generally to a kind of instruments used for education field, more particularly, to a kind of intelligent elevated blackboard in classroom.Limit sensors, key-press module, the output terminal of clock module of the intelligent elevated blackboard in classroom are connected to the input terminal of microcontroller；The output terminal of power module is connected to the input terminal of microcontroller；The output terminal of microcontroller is connected to the input terminal of display module, drive module, magnetic induction loop；The output terminal of drive module is connected to the input terminal of motor；Infrared transmission module is connected with infrared receiving module by infrared signal；The output terminal of infrared receiving module is connected to the input terminal of microcontroller.A kind of intelligent elevated blackboard in classroom of the utility model, its is simple in structure, the lifting of blackboard is realized by key-press module control motor positive and inverse, limit sensors detect the upper limit and lower limit of blackboard, and the chalk dust that magnetic induction loop is produced on electromagnetic force absorption blackboard carries out concentration cleaning.
Description
Technical field
The utility model relates generally to a kind of instruments used for education field, intelligent elevated black more specifically to a kind of classroom
Plate.
Background technology
Blackboard is the instrument of classroom instruction, although promoting the use of multimedia teaching now, just on the whole, various kinds of schools
Classroom instruction be still mainly given lessons with blackboard writing on the blackboard based on.Because almost all of blackboard is essentially all fixed, always
Since there are the problem of be：It is excessive that top is write when classroom instruction is write, too low below, the actual space of a whole page write is only during teaching
Have that half is more, really most writing height position in labour-saving only accounts for 2/5ths of blackboard area.Designing a can intelligently be adjusted
The blackboard of height, meets that teacher accomplishes to write in most labour-saving height and position all the time in writing on the blackboard, and realizes the comprehensive of blackboard
Product writing, is finally reached the purpose for mitigating teaching job intensity.
Utility model content
For the utility model mainly solving the technical problems that providing a kind of classroom intelligent elevated blackboard, its is simple in structure, leads to
The lifting that key-press module control motor forward/backward rotation realizes blackboard is crossed, limit sensors detect the upper limit and lower limit of blackboard,
The chalk dust that magnetic induction loop is produced on electromagnetic force absorption blackboard carries out concentration cleaning.
In order to solve the above technical problems, a kind of intelligent elevated blackboard in classroom of the utility model includes limit sensors, button
Module, clock module, power module, microcontroller, infrared receiving module, infrared transmission module, display module, drive module, electricity
Motivation, magnetic induction loop, its is simple in structure, and the lifting of blackboard, spacing sensing are realized by key-press module control motor forward/backward rotation
Device detects the upper limit and lower limit of blackboard, and the chalk dust that magnetic induction loop is produced on electromagnetic force absorption blackboard carries out concentration cleaning.
Wherein, the output terminal of the limit sensors is connected to the input terminal of microcontroller；The output terminal of the key-press module
It is connected to the input terminal of microcontroller；The output terminal of the clock module is connected to the input terminal of microcontroller；The power module
Output terminal is connected to the input terminal of microcontroller；The output terminal of the microcontroller is connected to the input terminal of display module；The monolithic
The output terminal of machine is connected to the input terminal of drive module；The output terminal of the drive module is connected to the input terminal of motor；Institute
The output terminal for stating microcontroller is connected to the input terminal of magnetic induction loop；The infrared transmission module passes through infrared with infrared receiving module
Signal is connected；The output terminal of the infrared receiving module is connected to the input terminal of microcontroller.
As the further optimization of the utility model, microcontroller described in a kind of intelligent elevated blackboard in classroom of the utility model is adopted
With AT89C51 microcontrollers.
As the further optimization of the utility model, spacing sensing described in a kind of intelligent elevated blackboard in classroom of the utility model
Device uses AH201 magnetic induction honeywell switch sensors.
As the further optimization of the utility model, clock module described in a kind of intelligent elevated blackboard in classroom of the utility model
Using DS1302 clock chips.
As the further optimization of the utility model, display module described in a kind of intelligent elevated blackboard in classroom of the utility model
Using LCD1602.
As the further optimization of the utility model, drive module described in a kind of intelligent elevated blackboard in classroom of the utility model
Using L298N chips.
As the further optimization of the utility model, infrared receiver described in a kind of intelligent elevated blackboard in classroom of the utility model
Module uses RPM-301B chips.
Control effect：A kind of intelligent elevated blackboard in classroom of the utility model, its is simple in structure, and electricity is controlled by key-press module
The lifting of blackboard is realized in motivation rotating, and limit sensors detect the upper limit and lower limit of blackboard, and magnetic induction loop produces electromagnetism
Chalk dust on power absorption blackboard carries out concentration cleaning.
Brief description of the drawings
The utility model is described in more detail with specific implementation method below in conjunction with the accompanying drawings.
Fig. 1 is a kind of hardware structure diagram of the intelligent elevated blackboard in classroom of the utility model.
Fig. 2 is a kind of circuit diagram of the microcontroller of the intelligent elevated blackboard in classroom of the utility model.
Fig. 3 is a kind of drive module of the intelligent elevated blackboard in classroom of the utility model, the circuit diagram of motor.
Fig. 4 is a kind of circuit diagram of the clock module of the intelligent elevated blackboard in classroom of the utility model.
Fig. 5 is a kind of circuit diagram of the display module of the intelligent elevated blackboard in classroom of the utility model.
Fig. 6 is a kind of circuit diagram of the power module of the intelligent elevated blackboard in classroom of the utility model.
Fig. 7 is a kind of circuit diagram of the infrared transmission module of the intelligent elevated blackboard in classroom of the utility model.
Fig. 8 is a kind of circuit diagram of the infrared receiving module of the intelligent elevated blackboard in classroom of the utility model.
Fig. 9 is a kind of circuit diagram of the magnetic induction loop of the intelligent elevated blackboard in classroom of the utility model.
Figure 10 is a kind of circuit diagram of the limit sensors of the intelligent elevated blackboard in classroom of the utility model.
Embodiment
Embodiment one：
Illustrate present embodiment with reference to Fig. 1,2,3,4,5,6,7,8,9,10, a kind of classroom described in present embodiment intelligently rises
Dropping blackboard includes limit sensors, key-press module, clock module, power module, microcontroller, infrared receiving module, infrared emission
Module, display module, drive module, motor, magnetic induction loop, its is simple in structure, controls motor positive and negative by key-press module
Turn to realize the lifting of blackboard, limit sensors detect the upper limit and lower limit of blackboard, and it is black that magnetic induction loop produces electromagnetic force absorption
Chalk dust on plate carries out concentration cleaning.
Wherein, the output terminal of the limit sensors is connected to the input terminal of microcontroller, and limit sensors are used to detect black
Upper and lower bound of the plate in lifting process, prevents motor from exceeding upper limit position and lower limit during driving blackboard lifting
Put, speed limit sensor uses travel switch, and control blackboard carries out elevating movement, spacing biography between upper limit position and lower position
The AD1 ends of sensor are connected with the P1.7 pins of microcontroller.
The output terminal of the key-press module is connected to the input terminal of microcontroller, and key-press module is controlled using single key
System, when wanting to control blackboard to be lifted, passes through button S1, S2 and controls blackboard to carry out raising and lowering movement, key-press module
It is connected respectively with P0.0, P0.1 pin of microcontroller.
The output terminal of the clock module is connected to the input terminal of microcontroller, and clock module uses DS1302 clock chips,
For providing the time signal of standard for system, VCC1 is backup power supply, VCC2 is main power source, DS1302 chips by VCC1 or
The greater power supply in both VCC2.X1, X2 are oscillation sources, external 32.768kHz crystal oscillators.RST is reset/chip select line, is passed through
RST input drivings put high level to start all data transmission.SCK is input end of clock, and I/O exports for serial date transfer
Hold (two-way).The SCLK ends of clock module are connected with the P3.5 pins of microcontroller, the I/O ends of clock module and microcontroller
P3.6 pins are connected, and the RST ends of clock module are connected with the P3.7 pins of microcontroller.
The output terminal of the power module is connected to the input terminal of microcontroller, and power module is used to be supplied to be intelligent elevated
Standard 220V power supplys, are depressured, are filtered, the processing such as voltage stabilizing, from VCC mouthful output 15V power supplys for singly by electricity by power module
Piece machine is powered.
The output terminal of the microcontroller is connected to the input terminal of display module, and display module uses LCD1602 liquid crystal displays
Screen, display module are used to show current time, D0, D1, D2, D, D4, D5, D6, D7 end of display module and the P2.0 of microcontroller,
P2.1, P2.2, P2.3, P2.4, P2.5, P2.6, P2.7 pin are connected, for display data；The RS ends of display module and list
The P3.0 pins of piece machine are connected, for controlling data command；The R/W ends of display module are connected with the P3.1 pins of microcontroller
Connect, for controlling read-write operation；The Enable Pin E of display module is connected with the P3.2 pins of microcontroller；The P3.0 of microcontroller,
P3.1, P3.2 pin are used for the strobe state for controlling the charactron in display module.
The output terminal of the microcontroller is connected to the input terminal of drive module, and drive module uses L298N chips, due to electricity
Motivation operating needs big voltage to be powered, and the small voltage that microcontroller directly exports can not be directly to motor, microcontroller
The small voltage signal exported is converted to big voltage signal by drive module and is powered to motor by the signal exported, monolithic
Machine passes through P1.0, P1.1, P1.2, P1.3, P1.4, P1.5 pin and IN1, IN2, IN3, IN4, EN A, EN B of drive module
Mouth is connected.
The output terminal of the drive module is connected to the input terminal of motor, and motor uses Y80M1-2 type deceleration electrics
Machine, Y type motor efficiencies are high, energy saving, locked-rotor torque is high, noise is low, with small vibration, safe and reliable to operation, suitable for controlling blackboard
Lifting.Motor drives blackboard to realize elevating movement by rotating campaign, OUT1, OUT2 and OUT3 of drive module,
OUT4 mouthfuls connect a motor respectively, and drive module two motor of driving realize the lifting of blackboard.
The output terminal of the microcontroller is connected to the input terminal of magnetic induction loop, due to the process after blackboard writes in erasing
In, dust from flying, sets magnetic induction loop, magnetic induction loop produces electromagnetic force during energization, dust is inhaled at blackboard both ends
It is attached on blackboard, carries out concentration cleaning, the circuit diagram of magnetic induction loop passes through A1, A2 end and P0.6, P0.7 pin phase of microcontroller
Connection.
The infrared transmission module is connected with infrared receiving module by infrared signal, and infrared transmission module is using infrared
Light emitting diode, infrared light-emitting diode launch infrared signal, and infrared transmission module can launch a series of binary system
Pulse signal, is converted into electric signal after being received by infrared receiving module and is controlled.
The output terminal of the infrared receiving module is connected to the input terminal of microcontroller, and infrared receiving module uses RPM-301B
Chip, when the infrared light that infrared transmission module is launched is irradiated on infrared receiving module, infrared receiving module believes light
Number electric signal is converted into, the OUT terminal of infrared receiving module is connected with the P0.5 pins of microcontroller.
Embodiment two：
Illustrate present embodiment with reference to Fig. 1,2,3,4,5,6,7,8,9,10, the microcontroller uses AT89C51 microcontrollers.
The AT89C51 microcontrollers have the step-by-step operation system of complete set from its internal hardware to software, and ram in slice section is also
The address section of a dual-use function is especially opened, 16 bytes, element address 20H~2FH, it can both make at byte
Reason, can also make position processing.The setting and use of the I/O feet of 51 microcontrollers are very simple, when the foot makees input pin in use, need only
The foot is arranged to high level (during reset, each I/O mouthfuls is put high electricity).When the foot make output pin in use, then for high level or
Low level.
Embodiment three：
Illustrate present embodiment with reference to Fig. 1,2,3,4,5,6,7,8,9,10, the limit sensors use AH201 magnetic strengths
Answer honeywell switch sensor.IC1, IC2 are magnetic induction honeywell switch sensors, when IC1 does not sense permanent magnet, Hall
2 foot of device is in high level, Q2 saturation conductions, current collection extremely low level, and Q1 cut-offs, relay K1 is failure to actuate；When IC1 is sensed forever
During long magnetic field of magnets, 2 feet of IC1 are changed into low level, Q2 cut-offs, and collector be in high level, Q1 saturation conductions, relay K1 suctions
Close, light emitting diode DS1 is bright.K1 contacts control other to play discharge cock in relation to circuit again.Contactless electron senses limiter
Effect, and control the opening and closing of magnet-valve.
Embodiment four：
Illustrate present embodiment with reference to Fig. 1,2,3,4,5,6,7,8,9,10, the clock module uses DS1302 clock cores
Piece.DS1302 be DALLAS companies of the U.S. release a kind of high-performance, low-power consumption, the real time clock circuit with RAM, it can be right
Year, month, day, week, when, minute, second carry out timing, there is leap year compensation, operating voltage is 2.5V~5.5V.Connect using three lines
Mouth is synchronized with microcontroller to communicate, and the clock signal or RAM data of multiple bytes can be once transmitted using burst mode.
There is the ram register for provisional storage data of one 31 × 8 inside DS1302.
Embodiment five：
Illustrate present embodiment with reference to Fig. 1,2,3,4,5,6,7,8,9,10, the display module uses LCD1602.
LCD1602 is also 1602 character mode lcds, it is a kind of dot matrix type liquid crystal mould for being specifically used to display letter, numeral, symbol etc.
Block.It is made of several 5 × 7 or 5 × 11 grade dot character positions, and each dot character position can show a character,
Have between every a point away from interval, often go between also have interval, play the role of character pitch and line space, just because of
So so it cannot show figure well.LCD1602 display screens refer to that the content of display is 16 × 2, you can to show two
OK, every 16 character liquid crystal modules of row.
Embodiment six：
Illustrate present embodiment with reference to Fig. 1,2,3,4,5,6,7,8,9,10, the drive module uses L298N chips.
L298N is the product of SGS companies, and inside includes 4 channel logic drive circuits.It is a kind of two-phase and the special drive of four-phase motor
Dynamic device, that is, the high-voltage large current for including two H bridges enjoy a double blessing bridge driver, receive standard TTL logic level signal, can drive
The motor of 46V, below 2A.L298 can drive 2 motor, connect respectively between OUTl, OUT2 and OUT3, OUT4 2 it is electronic
Machine.IN1, IN2, IN3, IN4 foot connect input control level, control the rotating of motor, and ENA, ENB connect control Enable Pin, control
The stalling of motor processed.
Embodiment seven：
Illustrate present embodiment with reference to Fig. 1,2,3,4,5,6,7,8,9,10, the infrared receiving module uses RPM-301B
Chip.The PN junction of infrared receiving module has unilateral conduction, to add reverse biased to infrared receiving module, it could normal work
Make.Also there is the reverse drain saturation current of very little when no light, in circuit, generally 1 × 10-8—1×10-9A (is known as dark electricity
Stream), end at this time equivalent to photodiode；When there is light irradiation, PN junction is nearby bombarded by photon, is bound in semiconductor
Valence electron absorb photon energy and by percussion produce electron hole pair, the number of these carriers, for majority carrier shadow
Ring less, but for the minority carrier in P areas and N areas, then can greatly improve the concentration of minority carrier, in backward voltage
Under effect, reverse drain saturation current greatly increases, and forms photoelectric current, which mutually strains with the change of incident intensity
Change.When photoelectric current is by loading RL, the voltage signal changed with incident light will be obtained at resistance both ends.
A kind of operation principle of the intelligent elevated blackboard in classroom of the utility model is：By key-press module be manually entered rising or
Dropping signal, after microcontroller receives signal, outputs electrical signals to drive module, drive module drive motor carries out rotating
Rising or falling for blackboard is realized in movement, and the agretope risen or fallen by limit sensors detection blackboard, prevents blackboard from surpassing
Upper limit or lower limit are crossed, clock module provides time reference signal for system, and passes through the display installed in the blackboard upper right corner
Module shows the current time, can also launch infrared signal by infrared transmission module and receive realization pair by infrared receiving module
The control of motor forward/backward rotation.Fly in air since blackboard has chalk dust in erasing out handwriting, pacify at left and right sides of blackboard
Magnetic induction loop is filled, coil, which is powered, produces electromagnetic force absorption chalk dust, finally carries out concentration cleaning, power module is black entirely to lift
The modules of plate are powered.
Although the utility model is disclosed as above with preferred embodiment, it is not limited to the utility model, appoints
What person skilled in the art, in the spirit or scope for not departing from the utility model, can do various changes and modification, therefore
The scope of protection of the utility model should be subject to what claims were defined.
Claims (7)
1. a kind of intelligent elevated blackboard in classroom, it is characterised in that the intelligent elevated blackboard in classroom includes limit sensors, button
Module, clock module, power module, microcontroller, infrared receiving module, infrared transmission module, display module, drive module, electricity
Motivation, magnetic induction loop, the output terminal of the limit sensors are connected to the input terminal of microcontroller；The output terminal of the key-press module
It is connected to the input terminal of microcontroller；The output terminal of the clock module is connected to the input terminal of microcontroller；The power module
Output terminal is connected to the input terminal of microcontroller；The output terminal of the microcontroller is connected to the input terminal of display module；The monolithic
The output terminal of machine is connected to the input terminal of drive module；The output terminal of the drive module is connected to the input terminal of motor；Institute
The output terminal for stating microcontroller is connected to the input terminal of magnetic induction loop；The infrared transmission module passes through infrared with infrared receiving module
Signal is connected；The output terminal of the infrared receiving module is connected to the input terminal of microcontroller.
A kind of 2. intelligent elevated blackboard in classroom according to claim 1, it is characterised in that：The microcontroller uses
AT89C51 microcontrollers.
A kind of 3. intelligent elevated blackboard in classroom according to claim 1, it is characterised in that：The limit sensors use
AH201 magnetic induction honeywell switch sensors.
A kind of 4. intelligent elevated blackboard in classroom according to claim 1, it is characterised in that：The clock module uses
DS1302 clock chips.
A kind of 5. intelligent elevated blackboard in classroom according to claim 1, it is characterised in that：The display module uses
LCD1602。
A kind of 6. intelligent elevated blackboard in classroom according to claim 1, it is characterised in that：The drive module uses
L298N chips.
A kind of 7. intelligent elevated blackboard in classroom according to claim 1, it is characterised in that：The infrared receiving module uses
RPM-301B chips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621418415.1U CN207359934U (en) | 2016-12-22 | 2016-12-22 | A kind of intelligent elevated blackboard in classroom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621418415.1U CN207359934U (en) | 2016-12-22 | 2016-12-22 | A kind of intelligent elevated blackboard in classroom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207359934U true CN207359934U (en) | 2018-05-15 |
Family
ID=62423506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621418415.1U Expired - Fee Related CN207359934U (en) | 2016-12-22 | 2016-12-22 | A kind of intelligent elevated blackboard in classroom |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207359934U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111469584A (en) * | 2020-01-19 | 2020-07-31 | 浙江水利水电学院 | Automatically cleaning blackboard based on singlechip |
-
2016
- 2016-12-22 CN CN201621418415.1U patent/CN207359934U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111469584A (en) * | 2020-01-19 | 2020-07-31 | 浙江水利水电学院 | Automatically cleaning blackboard based on singlechip |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180515 Termination date: 20181222 |
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| CF01 | Termination of patent right due to non-payment of annual fee |