CN211555188U

CN211555188U - High-performance laser pen for teaching

Info

Publication number: CN211555188U
Application number: CN202020533499.3U
Authority: CN
Inventors: 李晓楠
Original assignee: Xian Fanyi University
Current assignee: Xian Fanyi University
Priority date: 2020-04-13
Filing date: 2020-04-13
Publication date: 2020-09-22
Anticipated expiration: 2030-04-13

Abstract

The utility model discloses a laser pen is used in high performance teaching, including casing and the control circuit of setting in the casing, be equipped with switch button and adjusting button on the casing, control circuit is including power supply source, regulating circuit and the light emitting component that electricity is connected in proper order, switch button electricity is connected between power supply source and regulating circuit to realize the switch of whole laser pen, adjusting button and regulating circuit are connected, thereby realize the adjustable of laser pen luminance. The utility model discloses an adjusting circuit has been set up inside the laser pen for the teacher can adjust the laser luminance that the laser pen jetted out by oneself at the teaching in-process, with the various condition that the adaptation appears at the teaching in-process, improved the teaching quality.

Description

High-performance laser pen for teaching

Technical Field

The utility model relates to a teaching laser pen technical field especially relates to a laser pen is used in high performance teaching.

Background

The laser indicator, also known as laser pen, pointing star pen, etc., is a pen-shaped emitter which is designed to be portable and easy to hold by hand and is processed by a laser module (light emitting diode). Along with the popularization of intelligent electronic blackboards, laser pens are also used more in class. The teacher uses the laser pen to project a light spot or a light ray, and the light spot or the light ray can be located outside the platform and can also point to the content on the blackboard screen, so that students can synchronously understand the content spoken by the teacher. Particularly, in the classroom of the inclined literal arts such as ideological and political affairs teaching, because the teaching content is various, the PPT of a common teacher has a lot of characters, meanwhile, in order to avoid the phenomenon that a lot of characters bring a feeling of dryness to students and reduce the learning interest of the students, the teacher can prepare colorful and rich illustrations and animations in the PPT to enable the teaching content to be more vivid, the student can conveniently understand the teaching content while the student is introduced, and the teaching quality is further improved. However, when the PPT is vivid and vivid, the color of the PPT is rich, so that the color of the electronic screen is complex and bright, and the light spot projected by the laser pen is easy to cover, namely, the light spot projected by a teacher through the laser pen in the teaching process is difficult to be perceived by students when the color of the picture on the screen is too complex or the color is too bright, and the students are difficult to link the speech of the teacher with the corresponding auxiliary picture, so that the teaching quality is influenced, and the fluency of the teacher in class is also influenced. And when playing video clips such as animation, for the convenience of the student watch clearly, thereby often can close the light of podium department and avoid the screen too bright, the student can't see concrete animation content clearly, and under comparatively dim environment like this, the light spot that the teacher explained in-process laser pen and jetted out then can be too obtrusive dazzling, can bring the uncomfortable sense of teachers and students and be not good to teachers and students' eyes, has influenced the overall quality on class. Therefore, it is very important to provide a teaching laser pen capable of adjusting the laser brightness in a classroom.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to overcome the defects, the high-performance laser pen for teaching is provided, and the laser brightness can be adjusted to improve the teaching quality.

In order to achieve the above purpose, the technical scheme of the utility model is that: the utility model provides a laser pen is used in high performance teaching, includes the casing and sets up the control circuit in the casing, is equipped with switch button and regulation button on the casing, control circuit is including power supply, regulating circuit and the light emitting component of electricity connection in proper order, switch button electricity is connected between power supply and regulating circuit to realize the switch of whole laser pen, adjust the button and be connected with regulating circuit, thereby realize the adjustable of laser pen luminance.

Further, the adjusting circuit comprises a resistor R5, a processor U1 and a conducting element Q1, wherein the resistor R5 is connected with an input end of the processor U1, the processor U1 is used for amplifying an input signal, an output end of the processor U1 is connected with the conducting element Q1, the conducting element Q1 is connected with the light-emitting element, and the light-emitting element can be turned on or off by turning on or off the conducting element Q1.

Furthermore, the resistor R5 is an adjustable resistor, the resistor R5 is connected to the adjustment button, the level of the output end of the processor U1 can be changed by changing the value of the resistor R5, and the level of the output end of the processor U1 can be changed by changing the level of the output end of the conduction element Q1 connected to the processor U1, so that the brightness of the light-emitting element can be adjusted.

Furthermore, the adjusting circuit further comprises resistors R1-R4, resistors R6-R9, a capacitor C1 and diodes D1-D2, one end of the resistor R1 and the other end of the resistor R2 are respectively connected with a power supply through a switch key, the other end of the resistor R1 is connected to one ends of resistors R2 and R3, one end of the resistor R1 is further connected to one ends of a resistor R4 and a diode D1, the other end of the resistor R3 is connected to the capacitor C1 and the pin 1 of the processor U1, the other end of the capacitor C1 is connected to the adjustable end of the resistor R5, the other end of the resistor R5 and the diode D2 and the emitter of the triode Q1, the other end of the resistor R4 is connected to one ends of the resistors R6 and R5, the other end of the resistor R6 is connected to the pin 2 of the processor U1 and one end of the resistor R8, the pin 3 of the processor U1 is connected to one end of the resistor R1 and the diode R1, the other end of the resistor R9 is connected to the base of the transistor Q1, the collector of the transistor Q1 is connected to the other end of the diode D1, and the other end of the diode D1 and the emitter of the transistor Q1 are also connected to the light-emitting element as the output end of the circuit.

Since the proposal is adopted, the beneficial effects of the utility model reside in that: the utility model provides a prior art's is not enough, the utility model provides a laser pen is used in high performance teaching, its benefit is:

(1) the utility model discloses an adjusting circuit has been set up inside the laser pen for the teacher can adjust the laser luminance that the laser pen jetted out by oneself at the teaching in-process, with the various condition that the adaptation appears at the teaching in-process, improved the teaching quality.

(2) The utility model discloses an its luminance of laser pen is adjustable for under dim condition, can reduce the luminance of laser pen, avoid the too high discomfort that causes to teachers and students' eyes of laser pen luminance, reduced the harmfulness that the laser pen exists.

(3) The utility model discloses an adjusting circuit simple structure, the components and parts that use are small, the energy consumption is low, and adopt the triode as the conduction element, and its response speed is fast, can make the quick transmission of signal to light-emitting component in, guaranteed adjustting of lighteness's speed, improved the performance of laser pen.

(4) The utility model discloses it has "ON", "OFF" typeface to paste through the fluorescent paper ON the switch button of laser pen, and it has "+", "-" two symbols to paste through the fluorescent paper ON the regulation button for the teacher also can be accurate operation laser pen under dim environment, reduces the instruction error rate of teaching in-process.

Drawings

Fig. 1 is a schematic block diagram of the control circuit of the present invention.

Fig. 2 is a schematic circuit diagram of the adjusting circuit of the present invention.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

As shown in fig. 1, a high-performance laser pointer for teaching comprises a housing and a control circuit disposed in the housing, wherein the control circuit is integrated on a PCB board so as to be welded or disposed in other fixed manners inside the housing. The shell is provided with a switch key and an adjusting key, and the switch key is pasted with 'ON' and 'OFF' characters through fluorescent paper so as to respectively and correspondingly turn ON and OFF the laser pen. Two signs of + and-are pasted on the adjusting key through fluorescent paper to respectively and correspondingly increase and reduce the laser brightness, so that a user can conveniently adjust the laser brightness of the laser pen in the teaching process, and the laser pen can be smoothly operated by the user in a dark environment due to the design of the fluorescent paper. The control circuit comprises a power supply source, an adjusting circuit and a light-emitting element which are sequentially and electrically connected, in the embodiment, the power supply source adopts a button cell, the light-emitting element is a light-emitting diode, and like a traditional laser pen, the light-emitting diode can emit light spots or a light ray through a shell after being electrified so as to realize an indicating function. The switch button electricity is connected between power supply and regulating circuit, with the switch that realizes whole laser pen, adjust the button and be connected with regulating circuit, thereby realize the adjustable of laser pen luminance, make the user in the teaching, can be according to the inside different light shade in classroom or the color shade of its teaching file is different, and adjust the laser luminance of laser pen by oneself, thereby improve the teaching quality, avoid the teaching in-process because the student does not know the position that the laser pen points and influence the drawback of teaching smoothness degree.

As shown in fig. 2, the adjusting circuit includes resistors R1-R9, a capacitor C1, diodes D1-D2, a conducting element Q1, and a processor U1, wherein the resistor R5 is an adjustable resistor, and the conducting element Q1 is a triode. One end of the resistor R1 and the other end of the resistor R2 are used as input ends of the circuit and are connected with a power supply through a switch key, the other end of the resistor R1 is connected with one ends of the resistors R2 and R3, one end of the resistor R1 is also connected with one ends of the resistor R4 and the diode D1, the other end of the resistor R3 is connected to a pin 1 of a capacitor C1 and a processor U1, the other end of the capacitor C1 is connected to an adjustable end of a resistor R5, the other end of a resistor R5, the other end of a diode D2 and an emitter of a triode Q1, the other end of the resistor R4 is connected to one ends of resistors R6 and R5, the other end of the resistor R6 is connected to a pin 2 of the processor U1 and one end of a resistor R8, pin 3 of the processor U1 is connected to one end of a resistor R7, the other end of the resistor R7 is connected to one end of a resistor R9, a diode D2 and the other end of a resistor R8, the other end of the resistor R9 is connected to the base of a transistor Q1, and the collector of the transistor Q1 is connected to the other end of a diode D1. The other end of the diode D1 and the emitter of the transistor Q1 are also connected with a light-emitting diode as the output end of the circuit.

Specifically, when a teacher needs to use the laser pen in class, the teacher presses down a switch button on the shell, the adjusting circuit is communicated with the power supply, signals enter the adjusting circuit through resistors R1-R2, the resistors R1-R2 are used as voltage dividing resistors, and the resistor R5 is connected with the adjusting button. When the brightness of the current laser pen does not need to be adjusted, the resistor R2 is an initial state value, namely after voltage division, a signal enters the processor U1 through the resistor R3, wherein the capacitor C1 is used for filtering a miscellaneous signal existing in the current signal, so that the whole circuit can smoothly run. The processor U1 is an amplifier, model TLC 2264. After the signal is amplified by the processor U1, accurate information can be conveniently received by the triode Q1, a signal is output by a pin 3 of the processor U1 to the resistors R5-R6 and then transmitted to the base stage of the triode Q1, the base stage of the triode Q1 is electrified, the triode Q1 is in a conducting state, and then the light emitting diode connected with the triode Q is electrified to emit laser. When the lecture is stopped and the teacher does not need to use the laser pen, the teacher presses the switch key on the shell again, namely the switch is turned on and off, the adjusting circuit is disconnected with the power supply, the adjusting circuit is not powered, and the light-emitting diode is not powered, namely the light-emitting diode stops emitting light. The diodes D1-D2 play a role in protection, so that the situation that the voltage of the triode Q1 is unstable in work is avoided, and the normal operation of the whole regulating circuit is influenced.

Further, in the teaching process, when the teacher presses the corresponding "-" symbol pasted on the adjustment key through the fluorescent paper when the laser brightness of the laser pen needs to be reduced due to factors such as dark classroom environment, the value of the resistor R5 can be adjusted, so that the amplification factor of the current processor U1 is reduced, the potential output from the pin 3 of the processor U1 is reduced, the voltage transmitted to the base level of the triode Q1 through the resistors R5-R6 is reduced, but the reduced value does not affect the conduction state of the triode Q1, and the triode Q1 is still in the conduction state. The voltage output by the triode Q1 to the light emitting diode connected with the triode is reduced, because of the reduction of the voltage, the brightness of the light emitting diode is reduced, and the brightness emitted by the shell is reduced, so that the brightness of light spots projected on a screen is not too sharp and dazzling in a dark environment, and the injury to the eyes of teachers and students is avoided. When the teacher needs to increase the laser brightness of the laser pen because the classroom environment is too bright or the color of the content on the display screen is too complex, the teacher presses the corresponding "+" symbol on the adjusting key, so that the value of the resistor R5 can be adjusted, the amplification factor of the current processor U1 is increased, the electric potential output from the pin 3 of the processor U1 is increased, the voltage transmitted to the base level of the triode Q1 through the resistors R5-R6 is increased, the voltage output from the triode Q1 to the light-emitting diode connected with the triode Q1 is increased, the brightness of the light-emitting diode is increased due to the increase of the voltage, the brightness of the light spot emitted by the light-emitting diode is increased through the shell, the brightness of the light spot projected on the screen is increased, so that the student can see the light spot to know the specific position of the corresponding picture corresponding to the content spoken by.

Parts not described in the above modes can be realized by adopting or referring to the prior art.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a laser pen is used in high performance teaching which characterized in that: including casing and the control circuit of setting in the casing, be equipped with switch button and regulation button on the casing, control circuit is including power supply, regulating circuit and the light emitting component that electricity is connected in proper order, switch button electricity is connected between power supply and regulating circuit to realize the switch of whole laser pen, adjust the button and be connected with regulating circuit, thereby realize the adjustable of laser pen luminance.

2. The high-performance laser pen for teaching according to claim 1, wherein: the adjusting circuit comprises a resistor R5, a processor U1 and a conducting element Q1, wherein the resistor R5 is connected with the input end of the processor U1, the processor U1 is used for amplifying an input signal, the output end of the processor U1 is connected with the conducting element Q1, the conducting element Q1 is connected with the light-emitting element, and the light-emitting element can be turned on or off by turning on or off the conducting element Q1.

3. The high-performance laser pen for teaching as claimed in claim 2, wherein: the resistor R5 is an adjustable resistor, the resistor R5 is connected with an adjusting key, the level of the output end of the processor U1 can be changed by changing the value of the resistor R5, and the level of the output end of the processor U1 can be changed by changing the level of the output end of the conducting element Q1 connected with the processor U1, so that the brightness of the light-emitting element can be adjusted.

4. The high-performance laser pen for teaching as claimed in claim 3, wherein: the adjusting circuit further comprises resistors R-R, a capacitor C and diodes D-D, one end of the resistor R and the other end of the resistor R are respectively connected with a power supply source through a switch key, the other end of the resistor R is connected to one ends of the resistors R and R, one end of the resistor R is also connected to one ends of the resistors R and the diodes D, the other end of the resistor R is connected to a pin 1 of the capacitor C and a processor U, the other end of the capacitor C is connected to an adjustable end of the resistor R, the other end of the diodes D and an emitter of a triode Q, the other end of the resistor R is connected to one ends of the resistors R and R, the other end of the resistor R is connected to a pin 2 of the processor U and one end of the resistor R, a pin 3 of the processor U is connected to one end of the resistor R, the other end of the, the other end of the resistor R9 is connected to the base of the transistor Q1, the collector of the transistor Q1 is connected to the other end of the diode D1, and the other end of the diode D1 and the emitter of the transistor Q1 are also connected to the light-emitting element as the output end of the circuit.