CN215601484U

CN215601484U - A multifunctional audio controller

Info

Publication number: CN215601484U
Application number: CN202120642755.7U
Authority: CN
Inventors: 孙艳丽
Original assignee: Naval Aeronautical University
Current assignee: Naval Aeronautical University
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2022-01-21
Anticipated expiration: 2031-03-30

Abstract

The utility model relates to a multifunctional audio controller. The multifunctional audio controller includes: a telephone call amplifier and a control radio amplifier, the telephone call amplifier is used for mutual communication between the command cabin and the cockpit, and the control radio amplifier is used to amplify the signal of the command cabin to the cockpit of the cockpit. The input signal required by the radio, and the input signal is transmitted to other construction vehicles through the radio in the cockpit. The multifunctional audio controller of the utility model can facilitate the communication between the command cabin and the driver's operation cabin, and communicate with other engineering vehicles through the radio station of the driver's operation cabin.

Description

Multifunctional audio controller

Technical Field

The utility model relates to the field of vehicle communication, in particular to a multifunctional audio controller.

Background

The cabin of the engineering vehicle in the prior art is divided into a command cabin and a driving operation cabin which are mutually isolated, a radio station is arranged in the driving operation cabin, and the command cabin is electromagnetically shielded. Therefore, a multifunctional audio controller is needed to facilitate communication between the command cabin and the cockpit and communication between a radio station controlling the cockpit and other engineering vehicles.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a multifunctional audio controller which can facilitate communication between a command cabin and a driving operation cabin and communication between a control radio station and other engineering vehicles.

In order to achieve the purpose, the utility model provides the following scheme:

a multi-function audio controller comprising: the control radio station amplifier is used for amplifying signals of the command cabin to input signals required by a radio station of the driving operation cabin and transmitting the input signals to other engineering vehicles through the radio station of the driving operation cabin.

Optionally, the system further comprises a call calling circuit, the call calling circuit is connected with the telephone call amplifier, and the call calling circuit is used for sending a call request to the cockpit by the command cabin and sending a call request to the command cabin by the cockpit.

Optionally, the telephone call amplifier includes a pre-call amplifier circuit and a handle earphone power amplifier circuit, the pre-call amplifier circuit is configured to amplify a voltage of the call request, and the handle earphone power amplifier circuit is configured to amplify a power of the call request after the voltage is amplified.

Optionally, the call circuit includes a speaker, the speaker is controlled by a double-pole double-throw switch, and when the speaker is turned off, the indicator light is turned on to indicate that the speaker is turned off.

Optionally, the pre-call amplifier circuit comprises a common base circuit, a common emitter circuit and a common collector circuit.

Optionally, the headset power amplifier circuit employs a TDA 2613.

Optionally, the control station amplifier includes a station microphone amplifying circuit, the station microphone amplifying circuit is configured to amplify a microphone signal of a head-mounted microphone set used for a call in the cockpit to 1Vpp, and the amplified microphone signal is sent to another vehicle through the station in the cockpit.

Optionally, the control station amplifier includes a station earphone amplifying circuit, the station earphone amplifying circuit is configured to amplify an audio signal received by the cockpit to 20Vpp, and the amplified audio signal is sent to another vehicle through the station in the cockpit.

According to the specific embodiment provided by the utility model, the utility model discloses the following technical effects:

the present invention provides a multi-functional audio controller, comprising: the control radio station amplifier is used for amplifying signals of the command cabin to input signals required by the radio station and transmitting the input signals to other engineering vehicles through the radio station. The multifunctional audio controller can facilitate the communication between the command cabin and the driving operation cabin and the communication between other engineering vehicles.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a block diagram of the multi-functional audio controller of the present invention;

FIG. 2 is a structural diagram of the pre-call amplifier circuit of the present invention;

FIG. 3 is a structural diagram of the handle type power amplifying circuit of the present invention;

FIG. 4 is a block diagram of the amplifying circuit of the control station according to the present invention;

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Fig. 1 is a structural diagram of a multifunctional audio controller according to the present invention. As shown in fig. 1, a multi-functional audio controller includes: telephone conversation amplifier 2 and control radio station amplifier 4, telephone conversation amplifier 2 is used for commander's cabin 1 and the intercommunication between the cockpit 3, and is concrete, contains the signal transmission of commander's cabin 1 and sends commander's cabin 3 and the signal transmission of cockpit 3 to commander's cabin 1, control radio station amplifier 4 is used for with the signal amplification of commander's cabin 1 arrives the required input signal of radio station of cockpit 3, and will input signal passes through the radio station of cockpit 3 transmits to other engineering vehicle 5.

The multifunctional audio controller further comprises a call calling circuit, the call calling circuit is connected with the telephone call amplifier 2, and the call calling circuit is used for sending a call request to the driving operation cabin 3 from the command cabin 1 and sending a call request to the command cabin 1 from the driving operation cabin 3. The function of the call calling circuit is to make a call (similar to the ringing of a telephone) first when the command cabin 1 and the cockpit 3 need to be in a call. The circuit is mainly composed of a power amplifier, a loudspeaker (8 ohm) and the like. The communication calling circuit comprises a loudspeaker, the loudspeaker is controlled by a double-pole double-throw switch, and when the loudspeaker is closed, the indicating lamp is turned on to prompt that the loudspeaker is closed.

The telephone call amplifier 2 comprises a call pre-amplification circuit and a handle type earphone power amplification circuit, the call pre-amplification circuit is used for amplifying the voltage of the call request, and the handle type earphone power amplification circuit is used for amplifying the power of the call request after the voltage is amplified. In order to prevent unnecessary interference when the communication is not carried out, a power switch can be arranged, and the power supply is turned off when the command cabin 1 and the driving operation cabin 3 do not carry out communication.

The pre-call amplifying circuit comprises a common base electrode circuit, a common emitter electrode circuit and a common collector electrode circuit. The pre-call amplifying circuit aims to amplify the microphone voltage of the handle type earphone microphone set when a command cabin 1 and a driving operation cabin 3 are in a call so as to improve the signal-to-noise ratio and eliminate the howling generated by the line-to-line coupling during the call (for example, if the microphone signal of the front cabin is directly fed to the command cabin 1 for amplification, the signal-to-noise ratio is poor after the microphone signal is fed to the command cabin 1 due to the fact that the microphone signal is weak, and if the microphone signal of the front cabin is directly amplified to the required power, the howling is generated due to the line-to-line coupling of the original transmission cable), so that a pre-amplifier and a power amplifier are respectively arranged on the command cabin 1 and the driving operation cabin 3, namely the pre-amplifier amplifies the voltage picked up by the microphone to a certain level and then feeds the voltage to the power amplifier of the other party through the transmission cable for power amplification. The pre-call amplifying circuit consists of a Q3 (common base circuit), a Q2 (common emitter circuit) and a Q1 (common collector circuit), and an amplified microphone signal is connected to a cable through an E9. U1U2 is a regulated chip, providing a regulated 12V voltage. As shown in figure 2, sound signals are input from a handle microphone, pass through a common base amplifier formed by Q3 (the characteristics are that high-frequency characteristics are good and voltage amplification factor is high), output enters a common emitter amplifier formed by Q2 through E7E8 (the characteristics are that voltage amplification and current amplification can be realized), and signals are output from a collector of Q2 and enter a base of a common collector amplifier Q1 (the characteristics are that voltage is not amplified but output resistance is small and load capacity is strong). MICAMPOUT of figure 2 and MICAMPOUT of figure 3 are linked together.

The power amplifying circuit of the handle earphone is used for amplifying the output signal of the preamplifier of the other side transmitted by the cable and controlling the volume. The headset power amplifier circuit employs TDA2613, the output of which is fed via E12 to the headset microphone set (600 ohm impedance). The volume control potentiometer is RV 3. As shown in fig. 3, the input is a handset microphone and the output is MICAMPOUT.

Control station amplifier 4 includes station microphone amplifier circuit, station microphone amplifier circuit is used for magnifying 1Vpp with the microphone signal of the head-mounted microphone group that the 3 conversations in cockpit used, and the microphone signal after the enlargies passes through the station of cockpit 3 sends to other vehicles. Radio station microphone amplifier circuit can satisfy the radio station requirement to input voltage when launching, conveniently carries out radio communication through radio station and other cars.

The station microphone amplifying circuit mainly comprises a common base amplifier (from an end E15 to an end E16), a second-order high-pass filter (from an end C24 to an end U1A), a low-pass filter (from an end C24 to an end R39) and a voltage follower (from an end C31 to an end VR 2). As shown in fig. 4, the MICAMPOUT input from the headset or pod 1 is amplified by the common base circuit consisting of Q12 and fed to a band pass filter to filter out the low frequency noise rich in vehicle start-up, resulting in amplification of the 300Hz-20kHz signal. The non-inverting terminals of the two operational amplifiers are connected to a 5V power supply, a static working point is formed through a voltage divider (the working point of the amplifier must be raised to a voltage which is not cut in the negative half cycle of the signal because of the single power supply), the output of U2A is fed to a Q8 common collector circuit, the output is fed to a potentiometer VR2 potentiometer (correcting output voltage), and the output is fed to a transmission input 1Vpp interface of a radio station through a capacitor E23. To save cost, the integrated op-amp may use two op-amps in one LM4558 chip.

The control radio amplifier 4 comprises a radio earphone amplifying circuit, the radio earphone amplifying circuit is used for amplifying the audio signal received by the driving operation cabin 3 to 20Vpp (adjustable), and the amplified audio signal is sent to other vehicles through the radio of the driving operation cabin 3. The radio station earphone amplifying circuit is simple in design, mainly comprises selection of a power amplifier chip and establishment of a peripheral circuit, the power supply voltage of an amplifier is controlled by a radio station starting signal, and the output of the amplifier is respectively fed to a headset earphone set used by a radio station.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the utility model.

Claims

1. A multi-function audio controller, comprising: the control radio station amplifier is used for amplifying signals of the command cabin to input signals required by a radio station of the driving operation cabin and transmitting the input signals to other engineering vehicles through the radio station of the driving operation cabin.

2. The multi-functional audio controller of claim 1, further comprising a talk call circuit, the talk call circuit being connected to the telephone talk amplifier, the talk call circuit being configured to send a talk request to the cockpit from the command pod and to send a talk request to the command pod from the cockpit.

3. The multi-functional audio controller of claim 2, wherein the telephone call amplifier comprises a pre-call amplifier circuit for amplifying the voltage of the call request and a headset power amplifier circuit for power amplifying the voltage-amplified call request.

4. The multi-functional audio controller of claim 2, wherein the call circuit comprises a speaker, the speaker being configured with a double pole double throw switch control, wherein when the speaker is turned off, an indicator light is illuminated to indicate that the speaker is turned off.

5. The multi-function audio controller of claim 3, wherein said pre-call amplifier circuit comprises a common base circuit, a common emitter circuit, and a common collector circuit.

6. The multi-functional audio controller of claim 3, wherein the headset power amplifier circuit employs a TDA 2613.

7. The multi-function audio controller according to claim 1, wherein the control station amplifier comprises a station microphone amplifying circuit for amplifying a microphone signal of a head-mounted microphone set used for a cockpit call to 1Vpp, and the amplified microphone signal is transmitted to another vehicle through a station of the cockpit.

8. The multifunctional audio controller according to claim 1, wherein the control station amplifier comprises a station earphone amplifying circuit, the station earphone amplifying circuit is used for amplifying the audio signal received by the driving operation cabin to 20Vpp, and the amplified audio signal is transmitted to other vehicles through the station of the driving operation cabin.