CN105590499B - A kind of laser head extension type is given lessons laser bar - Google Patents

Abstract

The present invention relates to a telescopic teaching laser rod with a laser head, which includes a columnar laser rod body. The sleeve is sleeved on the reciprocating screw rod, and the reciprocating screw rod is driven by a stepping motor to facilitate the reciprocating movement of the sleeve on the reciprocating screw rod to drive the laser head to expand and contract; the cylindrical laser A circuit board and a battery for powering the circuit board are also arranged in the rod; the circuit board includes an MCU, and the MCU is connected to the laser head through a laser drive circuit. The present invention can realize the interaction between the teaching laser rod and the handheld terminal. .

Description

A retractable teaching laser bar with a laser head

technical field

The invention relates to the technical field of electronic teaching appliances, in particular to a retractable teaching laser rod with a laser head.

Background technique

Laser sticks are an essential tool for existing multimedia teaching. However, the existing laser sticks are only used for laser positioning. Storage, portability and recreation of teacher data.

Contents of the invention

In view of this, the object of the present invention is to provide a teaching laser bar with a retractable laser head, which can realize the dancing of the teaching laser bar controlled by a handheld terminal.

The present invention adopts the following scheme to realize: a laser head retractable laser rod for teaching, including a columnar laser rod body, characterized in that: the columnar laser rod body is provided with a laser head that can be stretched back and forth, and the end of the laser head is set There is a sleeve, and the sleeve is sleeved on the reciprocating screw rod, and the reciprocating screw rod is driven by a stepping motor to facilitate the reciprocating movement of the sleeve on the reciprocating screw rod to drive the laser head to expand and contract; A circuit board and a battery for powering the circuit board are also arranged in the body of the columnar laser rod; the circuit board includes an MCU, the MCU is connected to the laser head via a laser drive circuit, and the MCU is also connected to a stepper Motor drive module, storage module, wireless communication module and button circuit; the wireless communication module is used to receive the audio signal of the handheld terminal, and the MCU converts the received audio signal into the driving signal of the stepping motor according to the level of the audio signal, In order to control the telescopic state of the laser head when the teaching laser rod is upright on the desktop, the dancing of the teaching laser rod is realized.

In an embodiment of the present invention, while the audio signal of the handheld terminal is sent to the wireless communication module, it can be played through the speaker of the handheld terminal.

In an embodiment of the present invention, the audio signal of the handheld terminal is recorded by the handheld terminal.

In an embodiment of the present invention, the MCU is also connected with an LED colored light driving circuit, and the MCU drives the LED colored light embedded on the surface of the columnar laser rod through the LED colored light driving circuit according to the level of the received audio signal. The lights work.

In an embodiment of the present invention, the MCU is also connected with an audio drive circuit, and the MCU controls the expansion and contraction state of the laser head according to the audio signal, and at the same time, the sound is controlled by the speaker installed in the cylindrical laser rod through the audio drive circuit. play.

In an embodiment of the present invention, the implementation of converting the audio signal into the drive signal of the stepping motor according to the level of the audio signal is: dividing the audio signal into five regions, which are bass, mid-bass, mid-range, mid-high and Treble; each zone corresponds to a control command.

In an embodiment of the present invention, the control commands corresponding to the bass, middle and treble are all forward rotation; the control commands corresponding to the middle bass and mid-high are all reverse.

In an embodiment of the present invention, the audio signal of the handheld terminal is converted from the frequency of shaking the handheld terminal.

In an embodiment of the present invention, the wireless communication module is a Bluetooth module.

In an embodiment of the present invention, the handheld terminal can transmit the teaching data to the wireless communication module and store it in the storage module.

The invention can send audio signals through the handheld terminal, so that when the teaching laser rod stands on the desktop, it can automatically adjust the stretching state according to the audio signal, so as to achieve the effect of dancing. It can not only store data and use laser teaching, but also can be used as a Amusement toy with good practical value.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the present invention.

Fig. 2 is a schematic diagram of the structure of the stent of the present invention.

Fig. 3 is a schematic block diagram of the circuit of the present invention.

detailed description

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with reference to the accompanying drawings.

Please refer to Fig. 1, Fig. 2 and Fig. 3, the present embodiment provides a laser head retractable teaching laser rod, including a columnar laser rod body 1, the columnar laser rod body is provided with a laser head 2 that can be stretched back and forth, so The end of the laser head 2 is provided with a sleeve 4, and the sleeve is sleeved on a reciprocating screw mandrel 5, and the reciprocating screw mandrel 5 is driven by a stepping motor 6, so that the sleeve 4 is placed on the reciprocating wire Reciprocating movement on the rod; like this, the laser head 2 can be stretched back and forth under the drive of the reciprocating screw rod; a circuit board 7 and a battery 8 for powering the circuit board are also arranged in the cylindrical laser rod body 1; The board includes an MCU, which is connected to the laser head through a laser drive circuit, and the MCU is also connected with a stepper motor drive module, a storage module, a wireless communication module and a key circuit. The wireless communication module is used to receive the audio signal of the handheld terminal, and the MCU converts the received audio signal into the driving signal of the stepping motor according to the level of the audio signal, so as to control the laser when the teaching laser bar is upright on the desktop The telescopic state of the head realizes dancing of the teaching laser rod. In order to prevent the laser rod from falling during the dancing process, a support frame can be provided, which includes a base 9, a pole 10 arranged on the base and a limit ring 11 arranged at the end of the pole to limit and support the laser rod for teaching.

In one embodiment of the present invention, there are guide columns 3 on both sides of the laser head, and the guide columns can slide back and forth in the guide groove 12 of the front-end housing of the cylindrical laser rod body, that is, the laser head is in the direction of the reciprocating screw rod. Driven to stretch back and forth.

In an embodiment of the present invention, while the audio signal of the handheld terminal is sent to the wireless communication module, it can be played through the speaker of the handheld terminal. In this way, along with the music, the expansion and contraction state of the laser head changes, giving people a feeling that the laser rod is dancing during the teaching.

In addition, in this embodiment, the audio signal of the handheld terminal can be recorded by the handheld terminal, that is, the audio can be recorded sound, including the user's speech sound, and the user can control the sound to be consistent with the audio signal of the handheld terminal. Interaction with laser teaching stick.

In an embodiment of the present invention, the MCU is also connected with an LED colored light driving circuit, and the MCU drives the LED colored light embedded on the surface of the columnar laser rod through the LED colored light driving circuit according to the level of the received audio signal. The lights work (the location of the LED lights is not shown in the figure). The lighting effect is integrated into the teaching laser rod body, which changes with the stretching state, which can improve the effect of interaction and dancing.

In an embodiment of the present invention, the MCU is also connected with an audio drive circuit, and the MCU controls the expansion and contraction state of the laser head according to the audio signal, and at the same time, the sound is controlled by the speaker installed in the cylindrical laser rod through the audio drive circuit. play. Through the speaker setting, the teaching laser bar can dance through the audio files stored in the memory, and play music while dancing. , jump, I'm jumping, jumping" such a voice, when it is played, it seems that the laser pointer is talking and moving while teaching. achieve better dynamic effects.

In an embodiment of the present invention, the implementation of converting the audio signal into the drive signal of the stepping motor according to the level of the audio signal is: dividing the audio signal into five regions, which are bass, mid-bass, mid-range, mid-high and Treble; each zone corresponds to a control command. The present invention is not limited thereto, and there are many ways to realize this. In this embodiment, sub-regional control is adopted because the frequency range of music is about 20Hz---20KHz. By limiting the range, the entire sound range can be Transformed into a few simple control instructions, not only the design is convenient, but also the state changes are more obvious.

In an embodiment of the present invention, the control commands corresponding to the bass, middle and treble are all forward rotation; the control commands corresponding to the middle bass and mid-high are all reverse. Due to the use of stepping motor control, the number of rotations can be precisely controlled to ensure the stretching effect of the laser head.

In an embodiment of the present invention, the audio signal of the handheld terminal is converted from the frequency of shaking the handheld terminal. In this way, while listening to music in the external environment, the user can take pictures by shaking the handheld terminal by himself to achieve a better interactive effect. The handheld terminal can be a mobile phone.

In an embodiment of the present invention, the wireless communication module is a Bluetooth module.

The present invention can wirelessly transmit and store the content of the user's lecture in the memory of the laser pointer for teaching. Before the lecture, the stored content can be played only after being transmitted to the multimedia device. In one embodiment of the present invention, The handheld terminal can transmit the teaching data to the wireless communication module and store it in the storage module. The data may be class content or audio data, which is not limited here. In this embodiment, since the wireless communication module is adopted and has the function of information storage, it can also be used as a function of exchanging information about making friends. After class, if the students want to obtain the contact information of the teacher, the user can store the contact information, that is, the name card information in the In the memory, the user directly sends the business card information to the student who sends the request through the key operation of the key circuit, and at the same time, can also accept the business card information sent by the student, which solves the problem that the laser pointer can only be used for laser positioning during teaching. Maximum convenience for users.

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention.

Claims (1)

1. A laser head retractable laser rod for teaching, comprising a columnar laser rod body, characterized in that: the columnar laser rod body is provided with a laser head that can stretch back and forth, and the end of the laser head is provided with a sleeve, so The sleeve is sleeved on the reciprocating screw rod, and the reciprocating screw rod is driven by a stepping motor to facilitate the reciprocating movement of the sleeve on the reciprocating screw rod to drive the expansion and contraction of the laser head; the cylindrical laser rod body A circuit board and a battery for powering the circuit board are also provided; the circuit board includes an MCU, the MCU is connected to the laser head via a laser drive circuit, and the MCU is also connected with a stepper motor drive module and a storage module , a wireless communication module and a button circuit; the wireless communication module is used to receive the audio signal of the handheld terminal, and the MCU converts the received audio signal into the driving signal of the stepper motor according to the level of the audio signal, so as to facilitate the teaching laser When the stick is upright on the table, control the stretching state of the laser head to realize the dancing of the laser stick in teaching; When the audio signal of the handheld terminal is sent to the wireless communication module, it can be played through the speaker of the handheld terminal; The audio signal of the handheld terminal is recorded by the handheld terminal; The MCU is also connected with an LED colored light driving circuit, and the MCU drives the LED colored light embedded on the surface of the columnar laser rod through the LED colored light driving circuit to work according to the level of the received audio signal; The MCU is also connected with an audio drive circuit, and the MCU controls the telescopic state of the laser head according to the audio signal, and at the same time, the audio drive circuit is used to play by the speaker installed in the cylindrical laser rod; The implementation of converting the driving signal of the stepping motor according to the level of the audio signal is as follows: the audio signal is divided into five areas, which are respectively bass, mid-bass, mid-range, mid-high and treble; each area corresponds to a a control command; The control commands corresponding to the bass, midrange and treble are all forward rotation; the control commands corresponding to the mid-bass and mid-treble are all reverse; The audio signal of the handheld terminal is converted from the frequency of shaking the handheld terminal; The wireless communication module is a bluetooth module; The handheld terminal can transmit the teaching data to the wireless communication module and store it in the storage module.