CN108749410B - Classroom control terminal with environment detection function - Google Patents
Classroom control terminal with environment detection function Download PDFInfo
- Publication number
- CN108749410B CN108749410B CN201810553121.7A CN201810553121A CN108749410B CN 108749410 B CN108749410 B CN 108749410B CN 201810553121 A CN201810553121 A CN 201810553121A CN 108749410 B CN108749410 B CN 108749410B
- Authority
- CN
- China
- Prior art keywords
- module
- control module
- blackboard
- classroom
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 18
- 239000000428 dust Substances 0.000 claims abstract description 81
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000002184 metal Substances 0.000 claims abstract description 15
- 229910052751 metal Inorganic materials 0.000 claims abstract description 15
- 229910052742 iron Inorganic materials 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 239000012790 adhesive layer Substances 0.000 claims description 5
- 230000002457 bidirectional effect Effects 0.000 claims description 4
- 230000004323 axial length Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract 5
- 235000017491 Bambusa tulda Nutrition 0.000 abstract 5
- 241001330002 Bambuseae Species 0.000 abstract 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract 5
- 239000011425 bamboo Substances 0.000 abstract 5
- 230000008569 process Effects 0.000 description 13
- 230000006870 function Effects 0.000 description 7
- 230000007613 environmental effect Effects 0.000 description 6
- 239000010419 fine particle Substances 0.000 description 5
- 230000006698 induction Effects 0.000 description 5
- 230000005489 elastic deformation Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000002452 interceptive effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
- B43L1/04—Blackboards
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L21/00—Blackboard or slate cleaning devices
- B43L21/02—Blackboard or slate cleaning devices with means for absorbing the chalk dust
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C1/00—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people
- G07C1/10—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people together with the recording, indicating or registering of other data, e.g. of signs of identity
- G07C1/12—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people together with the recording, indicating or registering of other data, e.g. of signs of identity wherein the time is indicated in figures
- G07C1/14—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people together with the recording, indicating or registering of other data, e.g. of signs of identity wherein the time is indicated in figures with apparatus adapted for use with individual cards
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Drawing Aids And Blackboards (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The invention relates to the field of control equipment of classroom electric appliances, in particular to a classroom control terminal with an environment detection function, which comprises a body, wherein a key module, a control module, a display module and a card reading module are arranged on the body; the body also comprises a dust sensing module which is connected with the control module through a signal; the two sides of the body are respectively and rotatably connected with a driving roller and a driven roller, and a covering film capable of shielding the front surface of the body is wound between the driving roller and the driven roller; still include a section of thick bamboo and iron plate, sliding fit has the backup pad on the wall body of section of thick bamboo below, and the vertical setting of section of thick bamboo, sliding fit has magnet in the section of thick bamboo, and it has metal coil to coil on the lateral wall of section of thick bamboo, and the electricity is connected with the diode between the two free ends of metal coil, and control module obtains the current signal of diode and then controls motor start-up. The invention shields the front surface of the body when the blackboard is erased, and avoids the interference of the concentration value detected by the dust sensing module.
Description
Technical Field
The invention relates to the field of control equipment of classroom appliances, in particular to a classroom control terminal with an environment detection function.
Background
The classroom is a main place for teachers to give lessons and students to learn, in order to enable the teachers and the students to perform learning activities in the classroom more comfortably, electrical appliances such as lamps, electric fans and air conditioners are commonly installed in the classroom, and meanwhile, the electrical appliances such as lamps, electric fans and air conditioners in the classroom are centralized on the same management terminal to be controlled and managed, but after control signals are sent out from the management terminal, the management terminal controls each electrical appliance to start working.
But in the ventilation process of classrooms and the outside, dust pollution of the outside environment can enter a room, and the dust pollution mainly comprises fine particles, namely fine particles, fine particles and PM2.5, wherein the fine particles refer to particles with the aerodynamic equivalent diameter of less than or equal to 2.5 microns in the air of the environment. The fine particles can be suspended in the air for a long time, and the physical health of teachers and students is easily affected, so that a management terminal capable of detecting the dust concentration in classrooms is urgently needed.
For convenient use, the management terminal is generally arranged beside the blackboard in the classroom, and because the management terminal is used in the classroom, chalk dust is scattered everywhere when a teacher brushes the blackboard, if the chalk dust is detected at the moment, the chalk dust is easy to interfere with a detection result, and the content of the detected environmental dust cannot represent the environmental condition.
Disclosure of Invention
The invention aims to provide a classroom control terminal with an environment detection function, which is used for solving the problem that chalk dust interferes with dust concentration detection of a management terminal when a blackboard is erased.
The classroom control terminal with the environment detection function comprises a body, wherein a key module, a control module, a display module and a card reading module are arranged on the body, the key module is used for inputting a use signal of an electric appliance in a classroom and transmitting the use signal to the control module, the control module is used for controlling the electric appliance in the classroom to work after acquiring the use signal, the card reading module is used for a teacher to input a check-in signal and transmitting the check-in signal to the control module, and the control module controls the display screen to display check-in information of the teacher according to the check-in signal;
The body also comprises a dust sensing module which is connected with the control module through a signal, wherein the dust sensing module is used for detecting the dust concentration value in the teaching room and transmitting the dust concentration value to the control module, and the control module acquires the dust concentration value and controls the display module to display;
the left side of the body is rotationally connected with a driving roller, the driving roller is provided with rotational power by a motor, the motor is started for a preset time period according to the control of a control module and automatically stops, the right side of the body is rotationally connected with a driven roller, a coating is wound between the driving roller and the driven roller, the coating comprises a shielding surface and a connecting strip, and the shielding surface can shield a key module, a display module and a dust sensing module on the body;
Still including being located the column casing of blackboard place wall body and being located the iron plate on the blackboard eraser, sliding fit has the backup pad on the wall body of column casing below, the center pin perpendicular to horizontal plane of column casing, sliding fit has magnet in the column casing, it has metal coil to coil on the lateral wall of column casing, the two free ends electricity of metal coil is connected with the diode, arbitrary utmost point signal connection control module of diode, control motor start-up is controlled to the control module after obtaining the current signal of diode.
The working principle and the beneficial effects of the scheme are as follows: the body is arranged on a wall body of a classroom, when a teacher uses the teacher, the teacher can sign in through the card reading module, the card reading module transmits a received sign-in signal of the teacher to the control module, and the control module controls the display module to display sign-in information of the teacher according to the sign-in signal, such as name, class and work number of the teacher; when the teacher needs to adjust the working state of the electric appliances in the teaching room, the teacher inputs the use signals of the electric appliances through the key module, such as turning on a lamp, turning on an electric fan or starting an air conditioner, and the control module controls the corresponding electric appliances to start working according to the use signals.
Before a teacher uses a brush to wipe off chalk marks on a blackboard, a connecting strip of a film is positioned on the front surface of a body, the front surface is the surface where a display module, a key module and a dust sensing module are positioned, the dust sensing module detects dust concentration values in air in a classroom, a control module obtains the dust concentration values and controls the display module to display, and the film does not cover the front surface of the body, so that the blackboard is convenient to use; when a teacher gives lessons and erases a blackboard, the teacher holds the brush to move on the blackboard, the iron block on the brush is attracted with the magnet, the magnet moves in the column casing and enables the metal coil to cut the magnetic induction line, induced current is generated in the metal coil and flows through the diode, the control module acquires a current signal of the diode and controls the motor to start, the motor drives the driving roller to rotate, the driving roller conveys the coating film, the shielding surface of the coating film is conveyed to the front surface of the body to shield the display module and the key module on the body, chalk dust is prevented from entering small holes of the body and the key module, dust in the air cannot be detected by the dust sensing module, the chalk dust is prevented from interfering with detection, and the supporting plate supports the magnet and prevents the magnet from falling in the moving process.
Compared with the prior art, the main body in the scheme detects the dust concentration value of the air in the classroom, and displays the dust concentration value on the display module of the main body, so that teachers and students can conveniently know the environmental condition of the classroom in real time and timely take countermeasures; meanwhile, in the process of detecting the dust concentration by the body, the interference of chalk dust when a teacher erases a blackboard is eliminated, and the accuracy of the dust concentration is improved; moreover, when a teacher erases the blackboard, the film covers the front surface of the body, so that the body is prevented from accumulating too much chalk dust when erasing the blackboard, and the blackboard is difficult to clean.
Further, the bottom end face of backup pad has set firmly the connecting rod, set firmly the piston board on the bottom end of connecting rod, the airtight cooperation of piston board is in the gas cylinder, be equipped with the pressure spring between the interior bottom of piston board and gas cylinder, the first gas pocket has been seted up to the upper end department of gas cylinder, fixedly connected with first pipe in the first gas pocket, the exit linkage of first pipe is at the upper end edge of blackboard, the second gas pocket has been seted up to the lower tip department of gas cylinder, fixedly connected with second pipe in the second gas pocket, the exit linkage of second pipe is at the lower extreme edge of blackboard.
When the brush moves downwards, the attractive force between the iron block and the magnet in the brush drives the magnet to move downwards, pressure is applied to the support plate when the magnet moves downwards, the pressure of the support plate enables the pressure spring to generate compression elastic deformation, the support plate supports the piston plate to move downwards through the connecting rod, air in the space below the piston plate in the air cylinder is pressed out to the lower end edge of the blackboard from the second air hole, the scraped chalk dust is blown upwards, meanwhile, the piston plate sucks air outside the air cylinder into the space above the piston plate in the air cylinder from the upper end edge of the blackboard, and the chalk dust in the blackboard erasing process is sucked into the air cylinder; when the brush moves upwards, the attractive force between the iron block and the magnet drives the magnet to move upwards, the pressure spring pushes the piston plate and the supporting plate to move upwards for resetting in the process of recovering elastic deformation, so that the magnet also moves upwards, in the process of moving upwards the piston plate, air at the lower end edge of the blackboard is sucked into a space below the air cylinder piston plate from the second air hole, and meanwhile, air in the space above the air cylinder piston plate is discharged from the first air hole, so that the process is repeated, chalk dust is blown off and absorbed, and the scattered chalk dust around is reduced.
Further, adhesive layers are arranged on the upper end face and the lower end face of the piston plate.
When the chalk dust is sucked from the first air hole or the second air hole, the chalk dust sucked into the air cylinder is adhered to the adhesive layer, the chalk dust is collected, and the chalk dust in the air is removed while the chalk dust on the blackboard is wiped off, so that the chalk dust is prevented from scattering randomly.
Further, the body also comprises a timing module, the timing module is electrically connected with the control module, the control module controls the timing module to time after obtaining the current signal of the diode, the control module controls the motor to start after timing is finished, and the motor starts to transmit the connecting strip of the film to the side where the body display module is located.
In the blackboard erasing process, the metal coil generates induction current, the film covers the front side of the body, the dust sensing module cannot detect dust content in air at regular time, the motor is started after the regular time is finished, the connecting strip of the film is conveyed to the front side of the body, and when chalk dust is prevented from interfering the dust sensing module, the dust sensing module is prevented from being detected for a long time, and dust in the environment cannot be known.
Further, the diode is a diac.
When the chalk writing on the blackboard is erased, the track of a teacher when holding the brush for erasing is irregular, the erasing track of the brush can be from top to bottom, from bottom to top, from left to right or from right to left, and the like, when the moving track of the brush is changed, the attractive force between the iron block on the brush and the magnetic piece enables the moving direction of the iron block in the hollow cylinder to be irregular, so that the induced current direction generated in the conductive coil is changed, and the bidirectional trigger diode can timely pass current when the induced current direction is changed, and the probability of detecting a current signal when the blackboard is erased is increased.
Further, the length of the magnet is less than the axial length of the cylinder.
The length of the magnet is smaller than that of the column casing, so that the up-and-down movement amplitude of the magnet in the column casing is larger, the induction current is generated when the metal coil cuts the magnetic induction line, and the sensitivity of detecting the blackboard erasing action is improved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a classroom control terminal with environmental detection function according to the present invention;
FIG. 2 is a schematic view of the structure of the A-direction in FIG. 1;
Fig. 3 is a schematic diagram of the external structure of a cylinder in an embodiment of a classroom control terminal with environmental detection function according to the present invention;
FIG. 4 is a schematic view of the internal structure of the cartridge of FIG. 3;
Fig. 5 is a schematic block diagram of a classroom control terminal embodiment circuit with environmental detection capabilities of the present invention.
Detailed Description
The following is a detailed description of the embodiments.
Reference numerals in the drawings of the specification include: the air conditioner comprises a body 1, a coating film 2, a motor 3, a connecting sheet 4, a driving roller 5, a display module 6, a driven roller 7, a fan starting key 8, an on/off key 9, a temperature key 10, an air conditioner starting key 11, a dust sensing module 12, a card reading module 13, a shielding surface 14, a connecting strip 15, a column casing 16, a metal coil 17, a diode 18, a control module 19, a blackboard 20, a magnet 21, a first air hole 22, a second air hole 23, a first guide pipe 24, a support plate 25, a connecting rod 26, an air cylinder 27, an adhesive layer 28, a piston plate 29, a pressure spring 30 and a second guide pipe 31.
Classroom control terminals with environment detection function, as shown in fig. 1,2 and 5: the intelligent dust sensor comprises a body 1, wherein a key module, a control module 19, a display module 6, a card reading module 13, a dust sensing module 12 and a timing module are arranged on the body 1, the key module is used for inputting using signals of electric appliances in classrooms and transmitting the signals to the control module 19, the key module comprises a light on/off key 9, a temperature key 10, a fan starting key 8 and an air conditioner starting key 11, each key comprises a key cap and a piezoelectric element, for example, the piezoelectric element can use a piezoresistor of MYG20K151K under Shanxi China electronic group, the control module 19 can acquire using signals and then control the electric appliances in the classrooms, the control module 19 can use the existing STM32f103 singlechip, the electric appliances in the classrooms comprise lamps, electric fans, air conditioners and the like, the technology of controlling the working of the singlechip belongs to the prior art, the technology of not repeated description is omitted, the card reading module 13 is used for inputting signing signals by teachers and transmitting the signals to the control module 19, the card reading module 13 can use IC card readers of the prior electronic port model EP900, inputting signing signals are carried out through IC cards matched with the IC card readers, the control module 19 can use the IC card readers to obtain the values of the IC card readers, the IC card readers to control the control module 19 to control the dust sensor module to obtain the dust concentration values of the dust sensor module 12, the dust sensor module 12 is connected with the LCD module 12, the dust sensor module is connected with the control module 12, and the dust sensor module is used for detecting the dust sensor module 19, and the dust sensor module is used for detecting the dust sensor module, and the dust sensor module is used for the dust sensor module.
The key module is in signal connection with an input pin of the single-chip microcomputer, an output pin of the single-chip microcomputer is in control connection with the display module 6, the card reading module 13 is in signal connection with the input pin of the single-chip microcomputer, the diode 18 is in signal connection with the input pin of the single-chip microcomputer, the timing module is electrically connected with the input/output pin of the single-chip microcomputer, the single-chip microcomputer obtains a using signal of the key module and displays the using signal on the display module 6, the single-chip microcomputer obtains a voltage signal of the diode 18, the single-chip microcomputer obtains the card reading module 13, and the single-chip microcomputer controls the timing module to perform timing and the timing module to feed back signals.
The left side of the body 1 is rotationally connected with a driving roller 5, the driving roller 5 is provided with rotational power by a motor 3, the driving roller 5 is welded with an output shaft of the motor 3, the motor 3 starts for a preset time period according to the control of a control module 19 and automatically stops, the motor 3 adopts a ZB series gear motor 3 of a large motor 3 limited company in the existing Ningbo, a working power supply of the motor 3 is set according to the selected model, for example, the motor 3 can be inserted into a socket of a classroom through a plug, the preset time period is set according to the time when chalk dust is scattered, for example, the preset time period can be ten minutes, the right side of the body 1 is rotationally connected with a driven roller 7, a covering film 2 is wound between the driving roller 5 and the driven roller 7, the covering film 2 comprises a shielding surface 14 and a connecting strip 15, the connecting strip 15 is two mutually parallel rope-shaped strips, the connecting strip 15 can not shield the front surface of the body 1, the shielding surface 14 can shield a key module on the body 1, a display module 6 and a dust sensing module 12, the driving roller 5 and the driven roller 7 are connected with a rotating shaft through keys, the rotating shaft is rotationally matched on a connecting piece 4 of the body 1, the existing CD 60 is used for the timing module, and the control module is electrically connected with the control module 19 when the control module 19 is connected with the motor 3 to the control module 19, and the control module 19 is started when the control module is connected with the control module 19 to start the current module 19.
As shown in fig. 3 and 4, the blackboard eraser further comprises a column casing 16 positioned in the wall where the blackboard 20 is positioned and an iron block positioned on the blackboard 20 eraser, wherein the two ends of the column casing 16 are not blocked, namely, the column casing 16 is provided with a through channel, the column casing 16 is installed in the wall where the blackboard 20 is positioned, a supporting plate 25 is slidingly matched with the wall below the column casing 16, a connecting rod 26 is welded on the bottom surface of the supporting plate 25, a piston plate 29 is welded on the bottom end of the connecting rod 26, the piston plate 29 is hermetically matched in an air cylinder 27, a pressure spring 30 is arranged between the piston plate 29 and the inner bottom of the air cylinder 27, one free end of the pressure spring 30 is abutted against the piston plate 29, the other free end of the pressure spring 30 is abutted against the inner bottom of the air cylinder 27, a first air hole 22 is formed at the upper end of the air cylinder 27, a first guide pipe 24 is adhered in the first air hole 22, the outlet of the first guide pipe 24 is connected with the upper end edge of the blackboard 20, the outlet of the first guide pipe 24 faces the lower side of the blackboard 20, a second air hole 23 is formed at the lower end part of the air cylinder 27, a second guide pipe 31 is adhered in the second air hole 23, the outlet of the second guide pipe 31 is connected to the lower end edge of the blackboard 20, the outlet of the second guide pipe 31 faces to the upper side of the blackboard 20, an adhesive layer 28 is adhered on the upper end face and the lower end face of the piston plate 29, the central axis of the column cylinder 16 is vertical to the horizontal plane, namely the column cylinder 16 is vertically arranged, the magnet 21 is slidably matched in the column cylinder 16, namely the magnet 21 is not fixed in the column cylinder 16 through other parts, the length of the magnet 21 is smaller than the axial length of the column cylinder 16, a metal coil 17 is wound on the outer side wall of the column cylinder 16, a diode 18 is electrically connected between two free ends of the metal coil 17, the diode 18 is connected with a control module 19 through any pole signal of the diode 18 by using the existing bidirectional triggering diode 18, such as DB3 bidirectional triggering diode 18 with the brand MIC, that is, two wires are connected to the control module 19 at any positions on two ends of the diac 18, and the control module 19 obtains the current signal of the diac 18 and then controls the motor 3 to start.
When the system is specifically used, the body 1 is mounted on a wall body of a classroom through a screw, when a teacher uses the system, the teacher can sign in through the card reading module 13, the card reading module 13 transmits a received sign-in signal of the teacher to the control module 19, and the control module 19 controls the display module 6 to display sign-in information of the teacher according to the sign-in signal, such as displaying the name, the class and the work number of the teacher; when the teacher needs to adjust the working state of the electrical appliance in the teaching room, the teacher inputs the use signals of the electrical appliance through the key module, such as turning on a lamp, turning on an electric fan or starting an air conditioner, the use signals are voltage signals of the output ends of the piezoresistors when different keys are pressed, the control module 19 controls the corresponding electrical appliance to start working according to the use signals, and the control module 19 obtains the voltage signals of the piezoresistors and controls the corresponding electrical appliance to start working.
Before a teacher uses the brush to wipe off chalk marks on the blackboard 20, the connecting strip 15 of the coating film 2 is positioned on the front surface of the body 1, the front surface is the surface where the display module 6, the key module and the dust sensing module 12 are positioned, the dust sensing module 12 detects dust concentration values in air in a classroom, the control module 19 acquires the dust concentration values and controls the display module 6 to display, and the coating film 2 does not cover the front surface of the body 1, so that the use is convenient.
When a teacher gives lessons and erases the blackboard 20, the teacher holds the brush to move on the blackboard 20, the iron blocks on the brush are attracted with the magnet 21, the magnet 21 moves in the column casing 16 and makes the metal coil 17 cut the magnetic induction line, induced current is generated in the metal coil 17 and flows through the diode 18, the control module 19 obtains a current signal of the diode 18 and controls the motor 3 to start, the motor 3 drives the driving roller 5 to rotate, the driving roller 5 conveys the coating film 2, the shielding surface 14 of the coating film 2 is conveyed to the front surface of the body 1 to shield the display module 6 and the key module on the body 1, chalk dust is prevented from entering small holes of the body 1 and the key module, dust in the air cannot be detected by the dust sensing module 12, the chalk dust is prevented from interfering with detection, the magnet 21 is prevented from falling in the moving process by the supporting plate 25.
In the process of erasing the blackboard 20, when the erasing brush moves downwards, the attractive force between the iron block in the erasing brush and the magnet 21 drives the magnet 21 to move downwards, pressure is applied to the supporting plate 25 when the magnet 21 moves downwards, the pressure of the supporting plate 25 enables the pressure spring 30 to generate compression elastic deformation, the supporting plate 25 pushes the piston plate 29 to move downwards through the connecting rod 26, air in the space below the piston plate 29 in the air cylinder 27 is pressed out to the lower end edge of the blackboard 20 from the second air hole 23, the erased chalk dust is blown upwards, meanwhile, the piston plate 29 sucks air outside the air cylinder 27 into the space above the piston plate 29 in the air cylinder 27 from the upper end edge of the blackboard 20, and the chalk dust in the process of erasing the blackboard 20 is sucked into the air cylinder 27; when the brush moves upwards, the attractive force between the iron block and the magnet 21 drives the magnet 21 to move upwards, the pressure spring 30 pushes the piston plate 29 and the supporting plate 25 to move upwards for resetting in the process of recovering elastic deformation, so that the magnet 21 also moves upwards, in the process of moving the piston plate 29 upwards, air at the lower end edge of the blackboard 20 is sucked into a space below the piston plate 29 of the air cylinder 27 from the second air hole 23, and meanwhile, air in the space above the piston plate 29 of the air cylinder 27 is discharged from the first air hole 22, so that the chalk dust is repeatedly blown off and absorbed, and the scattered chalk dust to the periphery is reduced.
The foregoing is merely exemplary embodiments of the present application, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present application, and these should also be considered as the scope of the present application, which does not affect the effect of the implementation of the present application and the utility of the patent. The protection scope of the present application is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (4)
1. The classroom control terminal with the environment detection function comprises a body, wherein a key module, a control module, a display module and a card reading module are arranged on the body, the key module is used for inputting a use signal of an electric appliance in the classroom and transmitting the use signal to the control module, the control module is used for controlling the electric appliance in the classroom to work after acquiring the use signal, the card reading module is used for a teacher to input a check-in signal and transmitting the check-in signal to the control module, and the control module controls the display screen to display check-in information of the teacher according to the check-in signal;
the method is characterized in that: the body also comprises a dust sensing module which is connected with the control module through a signal, wherein the dust sensing module is used for detecting the dust concentration value in the teaching room and transmitting the dust concentration value to the control module, and the control module acquires the dust concentration value and controls the display module to display;
The left side of the body is rotationally connected with a driving roller, the driving roller is provided with rotational power by a motor, the motor is started for a preset time period according to the control of a control module and automatically stops, the right side of the body is rotationally connected with a driven roller, a coating film is wound between the driving roller and the driven roller, the coating film comprises a shielding surface and a connecting strip, the connecting strip is two mutually parallel rope-shaped strips, and the shielding surface can shield a key module, a display module and a dust sensing module on the body;
The blackboard eraser comprises a blackboard, a column casing and an iron block, wherein the column casing is positioned in a wall body where the blackboard is positioned, the iron block is positioned on the blackboard eraser, a supporting plate is slidably matched on the wall body below the column casing, a central shaft of the column casing is perpendicular to a horizontal plane, a magnet is slidably matched in the column casing, a metal coil is wound on the outer side wall of the column casing, a diode is electrically connected between two free ends of the metal coil, the diode is a bidirectional trigger diode, any pole of the diode is in signal connection with a control module, and the control module is used for controlling the starting of a motor after acquiring a current signal of the diode;
The body further comprises a timing module, the timing module is electrically connected with the control module, the control module controls the timing module to perform timing after acquiring the current signal of the diode, the control module controls the motor to start after timing is completed, and the motor starts to transmit the connecting strip of the film to the side where the body display module is located.
2. The classroom control terminal with environment detection function according to claim 1, wherein: the bottom end face of backup pad has set firmly the connecting rod, set firmly the piston board on the bottom end of connecting rod, piston board gas tightness cooperation is in the gas cylinder, be equipped with the pressure spring between the inner bottom of piston board and gas cylinder, the first gas pocket has been seted up to the upper end department of gas cylinder, fixedly connected with first pipe in the first gas pocket, the exit linkage of first pipe is at the upper end edge of blackboard, the second gas pocket has been seted up to the lower tip department of gas cylinder, fixedly connected with second pipe in the second gas pocket, the exit linkage of second pipe is at the lower end edge department of blackboard.
3. The classroom control terminal with environment detection function according to claim 2, wherein: and adhesive layers are arranged on the upper end face and the lower end face of the piston plate.
4. The classroom control terminal with environment detection function according to claim 1, wherein: the length of the magnet is smaller than the axial length of the column casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810553121.7A CN108749410B (en) | 2018-05-31 | 2018-05-31 | Classroom control terminal with environment detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810553121.7A CN108749410B (en) | 2018-05-31 | 2018-05-31 | Classroom control terminal with environment detection function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108749410A CN108749410A (en) | 2018-11-06 |
| CN108749410B true CN108749410B (en) | 2024-06-11 |
Family
ID=64001637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810553121.7A Active CN108749410B (en) | 2018-05-31 | 2018-05-31 | Classroom control terminal with environment detection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108749410B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110481216B (en) * | 2019-07-30 | 2021-05-28 | 温州斯酷睿机械科技有限公司 | Blackboard eraser capable of automatically adsorbing dust |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204340474U (en) * | 2014-11-23 | 2015-05-20 | 陕西亚泰电器科技有限公司 | A kind of SCM Based blackboard device |
| CN204712747U (en) * | 2015-06-17 | 2015-10-21 | 蒋诗雨 | Classroom dust dust catcher |
| CN105717254A (en) * | 2014-12-04 | 2016-06-29 | 西安扩力机电科技有限公司 | Classroom air monitoring and purifying system |
| CN106248542A (en) * | 2016-08-16 | 2016-12-21 | 广东欧珀移动通信有限公司 | A kind of detect the method for air quality, device and terminal |
| CN207249428U (en) * | 2017-09-05 | 2018-04-17 | 任昆阳 | A kind of Multifunctional environment monitoring operation desk |
| CN208530083U (en) * | 2018-05-31 | 2019-02-22 | 重庆市盛川荣科技有限责任公司 | Classroom controlling terminal with environment measuring function |
-
2018
- 2018-05-31 CN CN201810553121.7A patent/CN108749410B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204340474U (en) * | 2014-11-23 | 2015-05-20 | 陕西亚泰电器科技有限公司 | A kind of SCM Based blackboard device |
| CN105717254A (en) * | 2014-12-04 | 2016-06-29 | 西安扩力机电科技有限公司 | Classroom air monitoring and purifying system |
| CN204712747U (en) * | 2015-06-17 | 2015-10-21 | 蒋诗雨 | Classroom dust dust catcher |
| CN106248542A (en) * | 2016-08-16 | 2016-12-21 | 广东欧珀移动通信有限公司 | A kind of detect the method for air quality, device and terminal |
| CN207249428U (en) * | 2017-09-05 | 2018-04-17 | 任昆阳 | A kind of Multifunctional environment monitoring operation desk |
| CN208530083U (en) * | 2018-05-31 | 2019-02-22 | 重庆市盛川荣科技有限责任公司 | Classroom controlling terminal with environment measuring function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108749410A (en) | 2018-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207502498U (en) | A kind of air quality detecting device based on unmanned aerial vehicle platform | |
| CN108749410B (en) | Classroom control terminal with environment detection function | |
| CN204678540U (en) | A kind of portable air purifier | |
| CN202641144U (en) | Novel dust-free blackboard | |
| CN208530083U (en) | Classroom controlling terminal with environment measuring function | |
| CN203210961U (en) | Multifunctional blackboard eraser | |
| CN206862236U (en) | A kind of mobile phone shell week hole detection means | |
| CN105185176A (en) | Wireless handheld device for information-based teaching | |
| CN203224253U (en) | Household air detection device | |
| CN207729780U (en) | A kind of portable air quality testing control device | |
| CN110428677A (en) | It is a kind of to inscribe recording device for correcting the wrong of English paper | |
| CN207565209U (en) | One kind can positioning full-automatic dust absorption blackboard eraser | |
| CN108460857B (en) | Classroom management terminal convenient for student operation | |
| CN210670261U (en) | Face recognition camera | |
| CN107241833A (en) | A kind of Lighting Control Assembly | |
| CN208538190U (en) | Convenient for the class management terminal of student's operation | |
| CN203849237U (en) | Handheld harmful gas detector | |
| CN207162870U (en) | A kind of Xingfeng capsule monitors all-in-one | |
| CN206864052U (en) | Smoke Sensor teaching experiment platform | |
| CN216291182U (en) | Teaching gesture activity detection module | |
| CN212007514U (en) | Environmental noise detection device | |
| CN209912255U (en) | Mathematics teaching aid | |
| CN202221321U (en) | Miniature indoor environment detection case possessing data real time publish function | |
| CN205786533U (en) | A kind of portable air mass detecting instrument of sound and light alarm | |
| CN221746694U (en) | Indoor air environment monitoring circuit based on Mbus communication |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20191202 Address after: Xiangyu Street Airport Development Zone Road 401120 Chongqing city Yubei District Shuangfeng Bridge No. 15 Building 2 Applicant after: Chongqing Bochuang Intellectual Property Operations Co.,Ltd. Address before: 400039 21-5-2, Shiyang Road, Shiqiaopu, Kowloon Po, Chongqing. Applicant before: CHONGQING SHENGCHUANRONG TECHNOLOGY Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240508 Address after: 210000 Building 1, Juhui garden, 108 Xuanwu Avenue, Xuanwu District, Nanjing, Jiangsu Province Applicant after: Nanjing kuido Technology Co.,Ltd. Country or region after: China Address before: 401120 Yubei District, Chongqing Shuangfeng bridge airport development zone, Xiangyu Road, No. 15, 2. Applicant before: Chongqing Bochuang Intellectual Property Operations Co.,Ltd. Country or region before: China |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |