Gate power amplifier audio system

Abstract

The utility model provides a gate power amplifier audio system, which comprises a power supply, an audio input module, a signal processing module, a power amplification module, an audio output module and a loudspeaker, and is characterized in that the power supply is used for providing electric energy for the gate power amplifier audio system; the audio input module is used for receiving audio signals; the signal processing module is used for processing an audio signal received by the audio input module; the power amplification module is used for amplifying the audio signal processed by the signal processing module; the audio output module is used for outputting the audio signal amplified by the power amplification module; the loudspeaker is used for converting an electric signal of the audio output module into sound; the audio input module is connected with the signal processing module, the signal processing module is connected with the power amplification module, the power amplification module is connected with the audio output module, and the audio output module is connected with the loudspeaker. The problem that the audio output module has no sound due to the fact that a plastic part becomes brittle and deforms when the gate power amplifier audio output module is affected by the temperature of equipment is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gate machine audio frequency, specifically to a gate machine power amplifier audio frequency system. BACKGROUND

[0002] The gate machine power amplifier audio frequency output system plays an important role in public places such as subway stations, railway stations and the like, and is used to provide voice information such as passage prompt, alarm and the like to passengers. However, the existing gate machine power amplifier audio frequency output device has many problems.

[0003] At present, the gate machine power amplifier audio frequency output interface card is mostly made of plastic material, which is seriously affected by the internal temperature change during the long-term operation of the equipment. Since the gate machine is usually in a long-time continuous working state, the internal temperature fluctuation range is large, especially in the summer high-temperature environment or when the equipment is poorly ventilated, the temperature may rise to a degree that changes the performance of the plastic part. The plastic part is prone to brittle deformation under high temperature, which directly leads to poor contact between the audio frequency output interface pressing sheet and the connecting component. Poor contact will block the transmission of audio signals, causing sound interruption, noise and other problems, which seriously affects the audio output quality. Moreover, the condition of poor contact is further aggravated during frequent use of the gate machine, and even the pressing sheet is prone to falling off and damage. Once the interface pressing sheet is damaged, the entire audio output device will not work normally, and professional personnel are needed for maintenance or replacement of parts, which not only increases the maintenance cost, but also may cause the gate machine audio prompt function to be invalid for a long time, affecting the normal passage and use experience of passengers. SUMMARY

[0004] In order to overcome the problem that the gate machine power amplifier audio frequency output interface card made of plastic material is brittle and deformed due to the influence of the temperature of the equipment in the prior art, and the audio frequency output interface pressing sheet is prone to poor contact and falling off and damage, the utility model provides a gate machine power amplifier audio frequency system, which adopts the following technical scheme:

[0005] A gate machine power amplifier audio frequency system, comprising: a power supply, an audio input module, a signal processing module, a power amplifier module, an audio output module and a loudspeaker, wherein the power supply is used to provide power for the gate machine power amplifier audio frequency system; the audio input module is used to receive an audio signal; the signal processing module is used to process the audio signal received by the audio input module; the power amplifier module is used to amplify the audio signal processed by the signal processing module; the audio output module is used to output the audio signal amplified by the power amplifier module; the loudspeaker is used to convert the electrical signal of the audio output module into sound; the output end of the audio input module is connected to the input end of the signal processing module, the output end of the signal processing module is connected to the input end of the power amplifier module, the output end of the power amplifier module is connected to the audio output module, and the audio output module is connected to the loudspeaker.

[0006] Further, the audio output module is connected to the speaker by a wire.

[0007] Further, an electromagnetic shielding layer is arranged on each connection line of the gate machine power amplifier audio system.

[0008] Further, the audio input module is provided with a plurality of different types of audio interfaces, including but not limited to a 3.5mm audio interface, an RCA interface and a Bluetooth wireless receiving module.

[0009] Further, the signal processing module comprises a digital signal processor, and the digital signal processor is internally provided with an adaptive equalizer, which automatically adjusts the gain of each frequency band according to the frequency characteristics of the audio signal, so as to compensate for the frequency response deviation caused by the transmission line and the speaker characteristics.

[0010] Further, the power amplifier module adopts a class-D power amplifier.

[0011] Further, the audio output module comprises an impedance matching network composed of a plurality of capacitors and inductors.

[0012] Further, the wire is a silver-plated copper core wire, the insulating outer skin of which is made of polytetrafluoroethylene material, and the wire is provided with a connecting head at each end, and the wire is connected to the audio output module at one end by welding and wrapped with an insulating heat shrink tube for protection, and the wire is connected to the speaker at the other end by using a bayonet type quick connection joint.

[0013] Further, the speaker is a waterproof and dustproof type speaker, and the diaphragm thereof is made of carbon fiber composite material.

[0014] The utility model has the following beneficial effects:

[0015] 1. The electromagnetic shielding layer arranged on each connection line of the gate machine power amplifier audio system effectively reduces the influence of electromagnetic interference on audio signal transmission.

[0016] 2. The adaptive equalizer in the digital signal processor in the signal processing module automatically adjusts the gain of each frequency band according to the frequency characteristics of the audio signal, compensates for the frequency response deviation caused by the transmission line and the speaker characteristics, so that the audio signal can be properly amplified and adjusted at different frequency bands, and the situation that some frequency components are too strong or too weak is avoided.

[0017] 3. The plurality of different types of audio interfaces arranged on the audio input module greatly improve the compatibility of the gate machine power amplifier audio system, whether wired or wireless audio source can be smoothly connected to the gate machine power amplifier audio system, and the versatility and flexibility of the gate machine power amplifier audio system are enhanced.

[0018] 4. The impedance matching network in the audio output module of the utility model is composed of multiple capacitors and inductors, which can automatically adjust matching parameters according to the impedance of the connected loudspeaker, ensuring that the audio signal realizes maximum power transmission between the output end and the loudspeaker, and reducing signal reflection and loss.

[0019] 5. The power amplification module of the utility model adopts the utility model D utility model type power amplifier, which has a high-efficiency switching power supply circuit, can convert the audio signal into a pulse width modulation signal for power amplification, greatly improves the power conversion efficiency, reduces energy loss compared with the traditional utility model A / B utility model type power amplifier, and reduces heat.

[0020] 6. The utility model discloses a silver-plated copper core wire, the silver layer improves the conductivity, the copper core ensures good current transmission capacity, the insulating outer skin is made of polytetrafluoroethylene material, has the characteristics of high temperature resistance and wear resistance. The audio output module of the utility model connects the loudspeaker through the wire, ensures the stable and efficient transmission of the audio signal from the audio output module to the loudspeaker, reduces the probability of signal attenuation and fault occurrence, avoids the problem that the audio output interface card of the gate power amplifier is affected by the temperature of the equipment, the plastic part is brittle and deformed, the audio output interface pressing contact is poor and easy to fall off and damage, and improves the reliability of the audio output. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A gate power amplifier audio system schematic diagram is provided for the utility model.

[0022] Figure 2 A gate machine site original equipment diagram is provided for the utility model.

[0023] Figure 3 A mainboard of the utility model is provided for dismounting the power amplifier shell.

[0024] Figure 4 A schematic diagram of the utility model is provided for welding the power amplifier audio output end to lead out the wire.

[0025] Figure 5 A wire lead-out butt joint diagram is provided for the utility model after modification. DETAILED DESCRIPTION

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the specification herein is for describing particular embodiments only and is not intended to be limiting of the application; the present application is well suited to carry out various embodiments as broadly described herein without resorting to use of more specific terminology. The above and further advantages of the present application will become apparent by reference to the following description taken in conjunction with the accompanying drawings, in which like numerals indicate like elements in the figures, and by practice of the methods thereof.

[0027] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that any of the embodiments described herein can be incorporated into any other embodiment.

[0028] Please refer to Figure 1 The utility model provides a kind of gate machine power amplifier audio system, comprising: power supply, audio input module, signal processing module, power amplifier module, audio output module and loudspeaker, the power supply is used to provide electric energy for gate machine power amplifier audio system;The audio input module is used to receive audio signal;The signal processing module is used to process the audio signal received by audio input module;The power amplifier module is used to amplify the audio signal after signal processing module processing;The audio output module is used to output the audio signal amplified by power amplifier module;The loudspeaker is used to convert the electric signal of audio output module into sound;The output end of the audio input module is connected the input end of the signal processing module, the output end of the signal processing module is connected the input end of the power amplifier module, the output end of the power amplifier module is connected the audio output module, and the audio output module is connected the loudspeaker.

[0029] In a possible implementation, the audio output module is connected to the loudspeaker by a wire.

[0030] In a possible implementation, an electromagnetic shielding layer is provided on each connection line of the gate machine power amplifier audio system.

[0031] In a possible implementation, the audio input module is provided with a plurality of different types of audio interfaces, including but not limited to 3.5mm audio interface, RCA interface and Bluetooth wireless receiving module.

[0032] In a possible implementation, the signal processing module comprises a digital signal processor, which is internally provided with an adaptive equalizer, and the gain of each frequency band is automatically adjusted according to the frequency characteristics of the audio signal to compensate for the frequency response deviation caused by the transmission line and the speaker characteristics.

[0033] In a possible implementation, the power amplification module adopts a class-D power amplifier.

[0034] In a possible implementation, the audio output module comprises an impedance matching network composed of multiple capacitors and inductors.

[0035] In a possible implementation, the wire is a silver-plated copper core wire, the insulating sheath of which is made of polytetrafluoroethylene material, and the wire is respectively provided with a connecting head at both ends.

[0036] In a possible implementation, the speaker is a waterproof and dustproof speaker, and the diaphragm thereof is made of carbon fiber composite material.

[0037] It should be understood that the processing of electrical signals between the circuits, electronic components and modules can be performed by using existing processing methods, and the content of the present application does not involve the improvement of software and methods.

[0038] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments, and the preferred embodiments of the present application are given in the drawings, but do not limit the patent scope of the present application. The present application can be realized in many different forms, and conversely, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or equivalently replace some technical features. Any equivalent structure made by using the content of the present application specification and drawings, directly or indirectly applied to other related technical fields, is also within the patent protection scope of the present application.

Claims

1. A gate speaker audio system, characterized by, The gate machine power amplifier audio system comprises a power supply, an audio input module, a signal processing module, a power amplifier module, an audio output module and a loudspeaker, wherein the power supply is used to provide power for the gate machine power amplifier audio system; the audio input module is used to receive audio signals; the signal processing module is used to process the audio signals received by the audio input module; the power amplifier module is used to amplify the audio signals processed by the signal processing module; the audio output module is used to output the audio signals amplified by the power amplifier module; the loudspeaker is used to convert the electrical signals of the audio output module into sound; the output end of the audio input module is connected to the input end of the signal processing module; the output end of the signal processing module is connected to the input end of the power amplifier module; the output end of the power amplifier module is connected to the audio output module; and the audio output module is connected to the loudspeaker; the audio output module is connected to the loudspeaker through a wire; an electromagnetic shielding layer is arranged on each connection line of the gate machine power amplifier audio system; the wire is a silver-plated copper core wire, the insulating outer skin of which is made of polytetrafluoroethylene material; the wire is provided with a connecting head at each end; the wire is connected to the audio output module at one end by welding and is wrapped with an insulating heat shrink tube for protection; and the wire is connected to the loudspeaker at the other end by using a bayonet type quick connection joint.

2. The gate speaker audio system of claim 1, wherein, The audio input module is provided with a plurality of different types of audio interfaces, including but not limited to a 3.5mm audio interface, an RCA interface and a Bluetooth wireless receiving module.

3. The gate speaker audio system of claim 1, wherein, The power amplifier module adopts a class D power amplifier.

4. The gate speaker audio system of claim 1, wherein, The loudspeaker is a waterproof and dustproof type loudspeaker, and the diaphragm thereof is made of carbon fiber composite material.

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