CN207909359U - A kind of anti-tampering teaching public address equipment for not going here and there frequency - Google Patents

Abstract

The utility model provides a kind of anti-tampering teaching public address equipment for not going here and there frequency, including：Speaker and the circuit board in babinet are equipped with CPU intelligent chips, 2.4G on circuit board to frequency module, infrared to frequency module, charging module and laser emitting module；2.4G to frequency module, infrared frequency module, charging module and laser emitting module are connect with CPU intelligent chips respectively, the top of shell, which is arranged side by side, infrared head, laser head and built-in microphone, the signal input part of infrared head is connect with the infrared signal output end to frequency module, the signal input part of laser head and the signal output end of laser emitting module connect, and pass through connection between built-in microphone and CPU intelligent chips.Anti-tampering teaching public address equipment, 2.4G is provided simultaneously in public address equipment to frequency module and infrared to frequency module, and when booting connects frequency module using infrared, and interference is generated between each other when can simultaneously be switched on to avoid public address equipment to frequency module using 2.4G after stablizing.

Description

A kind of anti-tampering teaching public address equipment for not going here and there frequency

Technical field

The utility model is related to multimedia teaching facility technical fields, and in particular to a kind of anti-tampering teaching for not going here and there frequency is expanded Sound equipment.

Background technology

For the teaching intensity for the teacher that lightens the burden, teacher's body key health is protected, can be easy to also for the students of heel row are allowed Lecture contents are caught, multimedia public address equipment does to class in more and more schools.The teaching that teacher need not shout oneself hoarse, Heel row student can also catch the content given lessons, and can obtain more teaching resources with connecting multimedia device for religion It learns and uses.

Connection between multimedia equipment at present mostly uses wired or WIFI, bluetooth is wirelessly connected, if multimedia is set Connection between standby uses wired connection, can to connect up sufficiently complex, and installation connection is all more complicated, therewith intelligent equipment It is universal, the mounting means of wired connection, which is gradually wirelessly connected, to be replaced；Wireless blue tooth connection is commonplace at present Wireless connection technology, but remote single line connection can not be carried out；If connected using WIFI, due to classroom have it is close Collection type feature, up and down classroom be separated by all not far, use conventional U sections and V sections of microphone audios transmission, maximum problem It is interfering with each other between signal；In order to solve interfering with each other between public address equipment, also occur using at present on the market 2.4G is to frequency and transmission technology, and since the 2.4G communication modules plus signal that need to only be powered just emits, receiving signal just has output, pure hard Part product one-way transmission, transmission-receiving function can be completed by not needing the support of software program, and can be real without string frequency at a distance Communication connection between existing each equipment.But 2.4G is if public address equipment while opening to the greatest drawback of frequency and transmission technology Machine using when there may be adjacent equipment be switched at the same time to frequency use when will produce string frequency phenomenon, can continue to generate several seconds To tens seconds noises.

Utility model content

In view of the deficiencies of the prior art, the utility model provides a kind of anti-tampering teaching public address equipment for not going here and there frequency, expands 2.4G is provided simultaneously in sound equipment to frequency module and infrared to frequency module, when booting connects frequency module using infrared, after stablizing Interference is generated between each other when can simultaneously be switched on to avoid public address equipment to frequency module using 2.4G.

To realize that above-mentioned technical proposal, the utility model provide a kind of anti-tampering teaching public address equipment for not going here and there frequency, packet It includes：Speaker and the circuit board in babinet are equipped with CPU intelligent chips, 2.4G on the circuit board to frequency module, infrared To frequency module, charging module and laser emitting module, the 2.4G connects the 14th pin of frequency module and CPU intelligent chips It connects, it is infrared that connection, charging module and the 8th of CPU intelligent chips are connect with the 15th pin of CPU intelligent chips to frequency module It is connected in parallel with the 9th pin, laser emitting module is connect with the 6th pin of CPU intelligent chips, and the top of the shell is side by side It is provided with infrared head, laser head and built-in microphone, the signal input part of the infrared head and the infrared signal to frequency module are defeated Outlet connects, and the signal input part of laser head and the signal output end of laser emitting module connect, the bottom setting of the shell There is USB charge ports, the signal output end of the USB charge ports to be connect with charging module, built-in microphone and CPU intelligent chips it Between pass through connection.

In the above-mentioned technical solutions, when starting this teaching public address equipment, CPU intelligent chips automatically control infrared to frequency mould Block starts, and is connect to frequency with external equipment by infrared realized to frequency module, prevents equipment while being interfered when starting, especially It is infrared to frequency technology, and the signal of transmitting can thus accomplish not go here and there wall by wall or glass barrier, can be effective When preventing the public address equipment of the next classroom from starting, the interference that amplifies is caused to the public address equipment startup in other classroom, still, due to red Unofficial biography are a kind of point-to-point transmission modes to frequency connection, it is wireless, cannot from it is too far, aligning direction, and centre cannot have Barrier, therefore can not be stably connected with.So when by it is infrared frequency module is connect with external equipment after, CPU intelligent chip meetings The switching to frequency pattern is automatically controlled, this public address equipment is set with outside to be realized to frequency module instead of infrared to frequency module using 2.4G It is standby to carry out more stable connection.The infrared signal generated to frequency module is penetrated by infrared hair, to realization and external equipment Signal connection, the signal that laser emitting module generates is emitted by laser head, to have a function of laser pen, USB chargings The charging to this public address equipment may be implemented by charging module for mouth.

Preferably, built-in wheat pickup hole, the lower section peace in the built-in wheat pickup hole are provided on the leading flank of the babinet Equipped with liquid crystal display, function key control zone, the lower section of the function key control zone are provided with below the liquid crystal display It is provided with teleswitch control zone.Built-in wheat pickup hole is used to receive the sound of lecturer；Liquid crystal display is for showing this entire expansion The working condition of sound equipment；Multiple function control keys are installed on function key control zone；It is installed in teleswitch control zone multiple distant Control button.

Preferably, the function key control zone includes three the AGC function keys being arranged side by side successively from right to left, laser pens Key and RF keys；Laser pen key is pinned, the keying function of laser pen teacher's pointer may be implemented, 2.4G may be selected to frequently and red by RF keys Outside to frequency, the switching to display pattern may be implemented in AGC function keys.

Preferably, the teleswitch control zone is arranged to circle, and the setting of ON/OFF switch is in the center of circle, upper PPT page turning keys installation In the top of ON/OFF switch, lower PPT page turning keys are mounted on the lower section of ON/OFF switch, and volume reducing key is mounted on ON/OFF switch Left, volume increasing key be mounted on ON/OFF switch right.ON/OFF switch opens for realizing the power supply of entire public address equipment It closes, the control to PPT or more page turnings, volume reducing key and volume increasing key may be implemented in upper PPT page turning keys and lower PPT page turning keys Plus-minus for controlling video volume.

Preferably, it is provided with clip on the trailing flank of the babinet, lanyard hole, the extension are provided with above the clip The side of cord hole is equipped with built-in wheat input port, reset key is provided with below the clip, when without using PPT guiding functions When, this public address equipment can be clipped in by clip on collar or pocket, is used as pure microphone, it can be with by lanyard hole Lanyard connects, and prevents this public address equipment from losing, and reset key is used for functional reduction.

Preferably, built-in wheat pickup slot, the lower section peace of the built-in wheat pickup slot are provided in the left-hand end of the babinet Equipped with audio external input mouth.Built-in wheat pickup slot is used to collect the sound of lecturer, and audio external input mouth is convenient to be set with outside Standby connection.

Compared with the existing technology, it is provided by the utility model it is a kind of it is anti-tampering do not go here and there frequency teaching public address equipment beneficial effect Fruit is：This anti-tampering teaching public address equipment can be automatically controlled infrared by built-in CPU intelligent chips when equipment starts Frequency module is started, frequency is connect with external equipment by infrared realized to frequency module, when preventing equipment while starting Interference, after equipment connects, CPU intelligent chips can automatically control the switching to frequency pattern, be replaced to frequency module using 2.4G red This public address equipment carries out more stable connection with external equipment to be realized to frequency module outside.So as to effectively avoid public address equipment When being switched on simultaneously, interference is generated between each other.

Description of the drawings

Fig. 1 is the circuit connection diagram of the utility model.

Fig. 2 is the vertical view of the utility model.

Fig. 3 is the front view of the utility model.

Fig. 4 is the upward view of the utility model.

Fig. 5 is the side view of the utility model.

Fig. 6 is the rearview of the utility model.

In figure：1, CPU intelligent chips；2,2.4G is to frequency module；3, infrared to frequency module；4, charging module；5, laser is sent out Penetrate module；10, shell；11, infrared head；12, laser head；13, built-in microphone；14, built-in wheat pickup hole；15, liquid crystal display Screen；16, AGC function keys；17, laser pen key；18, RF keys；19, upper PPT page turning keys；20, volume reducing key；21, machine open/close Key；22, lower PPT page turning keys；23, volume increasing key；24, USB charge ports；25, built-in wheat pickup slot；26, audio external input Mouthful；27, clip；28, built-in wheat input port；29, lanyard hole；30, reset key.

Specific implementation mode

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clear, complete description, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.The every other embodiment that ordinary people in the field is obtained without making creative work, belongs to The scope of protection of the utility model.

Embodiment：A kind of anti-tampering teaching public address equipment.

Shown in Fig. 6, a kind of anti-tampering teaching public address equipment for not going here and there frequency, including：Shell 10 and be mounted on shell Circuit board in body 10, be equipped on the circuit board CPU intelligent chips 1,2.4G to frequency module 2, it is infrared to frequency module 3, fill Electric module 4 and laser emitting module 5, the 2.4G connect frequency module 2 with the 14th pin of CPU intelligent chips 1, infrared right Frequency module 3 connect connection, charging module 4 and the 8th and the 9th of CPU intelligent chips 1 with the 15th pin of CPU intelligent chips 1 Pin is connected in parallel, and laser emitting module 5 is connect with the 6th pin of CPU intelligent chips 1, and the 4th of the CPU intelligent chips 1 the Pin is sent for rs 232 serial interface signal, and the 5th pin of CPU intelligent chips 1 is received for rs 232 serial interface signal, the top of the shell 10 Being arranged side by side has infrared head 11, laser head 12 and built-in microphone 13, and the signal input part of the infrared head 11 is with infrared to frequency The signal output end of module 3 connects, and the signal input part of laser head 12 is connect with the signal output end of laser emitting module 5, institute The bottom for stating shell 10 is provided with USB charge ports 24, and the signal output end of the USB charge ports 24 is connect with charging module 4, interior Pass through connection between microphone 13 and CPU intelligent chips 1.

In the present embodiment, when starting this teaching public address equipment, CPU intelligent chips 1, which automatically control, infrared to be opened frequency module 3 It is dynamic, frequency is connect with external equipment by infrared realized to frequency module 3, equipment is prevented while being interfered when starting, especially It is infrared to frequency technology, the signal of transmitting can thus accomplish not go here and there wall by wall or glass barrier, can effectively prevent When only the public address equipment of the next classroom starts, the interference that amplifies is caused to the public address equipment startup in other classroom, still, due to infrared It is a kind of point-to-point transmission mode to pass to frequency connection, it is wireless, cannot from it is too far, aligning direction, and centre cannot have barrier Hinder object, therefore can not be stably connected with.So when by it is infrared frequency module 3 is connect with external equipment after, 1 meeting of CPU intelligent chips The switching to frequency pattern is automatically controlled, frequency module 2 is replaced using 2.4G infrared to this public address equipment of realization of frequency module 3 and outside Equipment carries out more stable connection.The infrared signal to the generation of frequency module 3 is emitted by infrared head 11, to realize and outside The signal of equipment connects, and the signal that laser emitting module 5 generates is emitted by laser head 12, to have the function of laser pen, The charging to this public address equipment may be implemented by charging module 4 for USB charge ports 24.

Shown in referring to Figure 2 to Figure 4, built-in wheat pickup hole 14, the built-in wheat are provided on the leading flank of the shell 10 The lower section in pickup hole 14 is equipped with liquid crystal display 15, and the lower section of the liquid crystal display 15 is provided with function key control zone, institute It states and is provided with teleswitch control zone below function key control zone.Built-in wheat pickup hole 14 is used to receive the sound of lecturer；Liquid crystal Display screen 15 is used to show the working condition of this entire public address equipment；Multiple function control keys are installed on function key control zone； Multiple remote keyings are installed in teleswitch control zone.

With reference to shown in Fig. 3, the function key control zone includes three AGC function keys being arranged side by side successively from right to left 16, laser pen key 17 and RF keys 18；Laser pen key 17 is pinned, the keying function of laser pen teacher's pointer may be implemented, pass through RF keys 18 2.4G may be selected to frequently and infrared to frequency, manual switching of the realization to frequency pattern；AGC function keys 16 may be implemented to liquid crystal display Shield the switching of 15 display patterns.

With reference to shown in Fig. 3, the teleswitch control zone is arranged to circle, and ON/OFF switch 21 is arranged in the center of circle, and upper PPT is turned over Page key 19 is mounted on the top of ON/OFF switch 21, and lower PPT page turning keys 22 are mounted on the lower section of ON/OFF switch 21, volume reducing key 20 are mounted on the left of ON/OFF switch 21, and volume increasing key 23 is mounted on the right of ON/OFF switch 21.ON/OFF switch 21 is used for Realize that the power supply of entire public address equipment opens and closes, upper PPT page turning keys 19 and lower PPT page turning keys 22 may be implemented to PPT or more page turnings Control, volume reducing key 20 and volume increasing key 23 are used to control the plus-minus of video volume.

Shown in referring to figure 5 and figure 6, clip 27 is provided on the trailing flank of the shell 10, the top of the clip 27 is set It is equipped with lanyard hole 29, the side of the lanyard hole 29 is equipped with built-in wheat input port 28, and the lower section of the clip 27 is provided with again This public address equipment can be clipped in by clip 27 on collar or pocket by position key 30 when without using PPT guiding functions, as Pure microphone uses, and can be connect with lanyard by lanyard hole 29, prevents this public address equipment from losing, and reset key 30 is multiple for function Position.

Shown in referring to figure 5 and figure 6, built-in wheat pickup slot 25, the built-in wheat are provided in the left-hand end of the shell 10 The lower section of pickup slot 25 is equipped with audio external input mouth 26.Built-in wheat pickup slot 25 is used to collect the sound of lecturer, outside audio The convenient connection with external equipment in portion input port 26.

The above be the utility model preferred embodiment, but the utility model should not be limited to the embodiment and Attached drawing disclosure of that is all fallen so every do not depart from the lower equivalent or modification completed of spirit disclosed in the utility model Enter the range of the utility model protection.

Claims (6)

1. a kind of anti-tampering teaching public address equipment for not going here and there frequency, it is characterised in that including：Speaker and the circuit in babinet Plate is equipped with CPU intelligent chips, 2.4G on the circuit board to frequency module, infrared to frequency module, charging module and Laser emission Module, the 2.4G connect frequency module with the 14th pin of CPU intelligent chips, infrared to frequency module and CPU intelligent chips The connection connection of the 15th pin, the 8th and the 9th pin of charging module and CPU intelligent chips is connected in parallel, Laser emission mould Block is connect with the 6th pin of CPU intelligent chips, and the top of shell, which is arranged side by side, infrared head, laser head and built-in microphone, The signal input part of the infrared head is connect with the infrared signal output end to frequency module, the signal input part and laser of laser head The signal output end of transmitting module connects, and the bottom of the shell is provided with USB charge ports, and the signal of the USB charge ports is defeated Outlet is connect with charging module, passes through connection between built-in microphone and CPU intelligent chips.

2. the anti-tampering teaching public address equipment for not going here and there frequency as described in claim 1, it is characterised in that：The leading flank of the babinet On be provided with built-in wheat pickup hole, liquid crystal display is installed below the built-in wheat pickup hole, the liquid crystal display Lower section is provided with function key control zone, and teleswitch control zone is provided with below the function key control zone.

3. the anti-tampering teaching public address equipment for not going here and there frequency as claimed in claim 2, it is characterised in that：The function key control zone AGC function keys, laser pen key and the RF keys being arranged side by side successively from right to left including three.

4. the anti-tampering teaching public address equipment for not going here and there frequency as claimed in claim 2, it is characterised in that：The teleswitch control zone It is arranged to circle, for the setting of ON/OFF switch in the center of circle, upper PPT page turning keys are mounted on the top of ON/OFF switch, lower PPT page turning keys peace Mounted in the lower section of ON/OFF switch, volume reducing key is mounted on the left of ON/OFF switch, and volume increasing key is mounted on ON/OFF switch Right.

5. the anti-tampering teaching public address equipment for not going here and there frequency as claimed in claim 2, it is characterised in that：The trailing flank of the shell On be provided with clip, be provided with lanyard hole above the clip, the side of the lanyard hole is equipped with built-in wheat input port, institute It states and is provided with reset key below clip.

6. the anti-tampering teaching public address equipment for not going here and there frequency as claimed in claim 3, it is characterised in that：The left-hand end of the shell On be provided with built-in wheat pickup slot, audio external input mouth is installed below the built-in wheat pickup slot.