Commercial vehicle active noise reduction and radio integration module

Abstract

The utility model relates to the technical field of active noise reduction and radio integration modules, in particular to a commercial vehicle active noise reduction and radio integration module, which reduces the application of devices with overlapped functions of a radio module and an active noise reduction module and greatly reduces the use cost. Comprising a power supply module; the system further comprises a transmission module, a radio module, an active noise reduction module and an output module, the power supply module is connected with the transmission module, the transmission module is connected with the radio module and the active noise reduction module, the radio module is further connected with the active noise reduction module, and the output module is connected with the active noise reduction module. The power supply module supplies power to the commercial vehicle active noise reduction and radio integration module, the transmission module can transmit signals required by the radio module and the active noise reduction module to the radio module and the active noise reduction module according to function requirements, a radio signal is output through the radio module, an active noise reduction signal is output through the active noise reduction module, and the radio module is connected with the active noise reduction module. And the output module amplifies and outputs the signal.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of active noise reduction and radio integrated module, especially to a commercial vehicle active noise reduction and radio integrated module. BACKGROUND

[0002] At present, the traditional fuel engine driven commercial vehicle generally has the problem of large engine noise in the vehicle, which seriously affects the driving and riding experience, and the application of active noise reduction is a high-efficiency way to reduce the noise. The composition of active noise reduction includes active noise reduction module, error microphone, engine speed acquisition, loudspeaker, etc. The error microphone acquires the noise signal in the vehicle and transmits the noise signal to the active noise reduction module. The noise reduction chip in the active noise reduction module calculates the noise reduction signal according to the engine speed signal and the error microphone signal, and outputs the noise reduction audio signal to the loudspeaker. The loudspeaker emits an anti-noise signal which has the same frequency and amplitude as the noise in the vehicle but opposite phase to achieve the purpose of noise reduction. The active noise reduction module needs to have the input and output of audio signals. At the same time, the commercial vehicle usually also configures a radio module, which also usually includes the input and output of audio signals, and its basic functions overlap with a large part of the active noise reduction module. This patent proposes to integrate the ANC function into the radio module to maximize the overlap of the two functional modules to reduce the cost and improve the performance-price ratio of the commercial vehicle. The existing technology usually inserts an active noise reduction module between the radio and the vehicle-mounted loudspeaker, inputs the audio signal of the radio to the active noise reduction module, mixes the audio signal with the active noise reduction signal in the active noise reduction module, and then outputs it to the vehicle-mounted loudspeaker. This way can realize the function of active noise reduction and also complete the playback function of the radio.

[0003] The existing active noise reduction module, such as the vehicle-mounted noise reduction module with the application number CN201310507203.5, includes an upper shell, a shielding cover, a partition plate, a module mainboard, a microphone buffer pad, a lower shell, a silicon microphone, a dust screen, a windproof cotton, and a plug-in part. By increasing the output voltage to enhance the sound volume, the voice signal is preprocessed to improve the voice recognition effect, and the noise reduction module can suppress the signal noise through differential noise reduction processing.

[0004] However, the active noise reduction module and the radio module used in the prior art have a high degree of overlap in the basic functional module part, such as power management, signal ADC input circuit, signal DAC input circuit, and power amplifier unit in the module, as well as the installation shell and connection harness of the module, which have functional overlap. These functionally overlapped hardware devices increase the cost of the vehicle. UTILITY MODEL CONTENTS

[0005] To solve the above technical problems, the utility model provides a device application for reducing the function overlap of the radio module and the active noise reduction module, and greatly reduces the use cost of a commercial vehicle active noise reduction and radio integrated module.

[0006] The commercial vehicle active noise reduction and radio integrated module of the utility model, including power module, still include transmission module, radio module, active noise reduction module and output module, power module is connected with transmission module, transmission module is connected with radio module and active noise reduction module, radio module is also connected with active noise reduction module, output module is connected with active noise reduction module, and the commercial vehicle active noise reduction and radio integrated module of the utility model is powered by power module, and transmission module can transmit the signal required by radio module and active noise reduction module to radio module and active noise reduction module according to the function needs, and radio signal is output through radio module, and active noise reduction signal is output through active noise reduction module, and the signal is amplified and output by output module; the commercial vehicle active noise reduction and radio integrated module of the utility model is powered by power module, and transmission module can transmit the signal required by radio module and active noise reduction module to radio module and active noise reduction module according to the function needs, and radio signal is output through radio module, and active noise reduction signal is output through active noise reduction module, and radio signal and active noise reduction signal are mixed and input to output module, and the signal is amplified and output by output module, so that the functions of radio and active noise reduction are completed, the device application of the function overlap of two function modules is reduced, and the use cost is greatly reduced.

[0007] Preferably, the power module includes power supply and power management, the power supply is connected with the power management, and the power management is connected with the transmission module; the power management is powered by the power supply, and then the commercial vehicle active noise reduction and radio integrated module is powered.

[0008] Preferably, the transmission module includes other sound sources, an ADC circuit and an error microphone, the power management is connected with the ADC circuit, the other sound sources are connected with the ADC circuit, and the error microphone is connected with the ADC circuit; the audio signal is input to the audio ADC circuit by the power supply of the power module, the error microphone of active noise reduction and other sound sources from the outside, the ADC circuit transmits the signal related to the radio to the radio module and the signal related to noise reduction to the active noise reduction module according to the function needs.

[0009] Preferably, the radio module comprises a radio antenna and a radio chip, the radio antenna is connected with the radio chip, and the radio chip is connected with the ADC circuit; through power supply of the power supply module, other sound sources from the outside and an error microphone of active noise reduction input audio signals to the audio ADC circuit, the ADC circuit transmits signals related to the radio to the radio chip and signals related to noise reduction to the active noise reduction module according to functional needs, and the radio signal is transmitted to the radio chip through the radio antenna.

[0010] Preferably, the active noise reduction module comprises an ANC chip, an engine speed and Can communication, the ANC chip is connected with the ADC circuit, and the engine speed and the Can communication are both connected with the ANC chip; through power supply of the power supply module, other sound sources from the outside and an error microphone of active noise reduction input audio signals to the audio ADC circuit, the ADC circuit transmits signals related to the radio to the radio chip and signals related to noise reduction to the ANC chip according to functional needs, the radio signal is transmitted to the radio chip through the radio antenna, and the ANC chip obtains active noise reduction signals under the control of the ANC algorithm according to related control signals in the engine speed and the Can communication.

[0011] Preferably, the output module comprises a DAC circuit, a power amplifier and a loudspeaker, the DAC circuit is connected with the ANC chip, the power amplifier is connected with the DAC circuit, and the loudspeaker is connected with the power amplifier; the ANC chip outputs the active noise reduction signal and the radio signal after mixing to the DAC circuit, and then outputs the signal to the loudspeaker after amplification by the power amplifier, so that the radio and the active noise reduction function are realized.

[0012] Compared with the prior art, the utility model has the advantages that the power supply module supplies power for the active noise reduction and radio integrated module of the commercial vehicle, the transmission module can transmit signals required by the radio module and the active noise reduction module to the radio module and the active noise reduction module according to functional needs, the radio signal is output through the radio module, the active noise reduction signal is output through the active noise reduction module, the radio signal and the active noise reduction signal are mixed and input to the output module, the signal is amplified and output through the output module, so that the functions of the radio and the active noise reduction are realized, the application of devices with function overlap of two function modules is reduced, and the use cost is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is the first structure schematic drawing of the utility model;

[0014] Fig. 2 It is the second structure schematic drawing of the utility model;

[0015] Fig. 3 It is the structure schematic drawing of prior art;

[0016] The attached diagram is labeled as follows: 01, Power Supply; 02, Other Audio Sources; 03, Radio Antenna; 04, Power Management; 05, ADC Circuit; 06, Radio Chip; 07, ANC Chip; 08, DAC Circuit; 09, Power Amplifier; 10, Speaker; 11, Error Microphone; 12, Engine Speed; 13, CAN Communication; 14, Power Supply Module; 15, Transmission Module; 16, Radio Module; 17, Active Noise Cancellation Module; 18, Output Module. Detailed Implementation

[0017] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0018] Example 1

[0019] like Figs. 1-3 As shown, a commercial vehicle active noise cancellation and radio integration module includes a power supply module 14, a transmission module 15, a radio module 16, an active noise cancellation module 17, and an output module 18. The power supply module 14 is connected to the transmission module 15, the transmission module 15 is connected to the radio module 16 and the active noise cancellation module 17, the radio module 16 is also connected to the active noise cancellation module 17, and the output module 18 is connected to the active noise cancellation module 17. The power supply module 14 supplies power to the commercial vehicle active noise cancellation and radio integration module. The transmission module 15 can transmit the signals required by the radio module 16 and the active noise cancellation module 17 to the radio module 16 and the active noise cancellation module 17 according to functional needs. The radio module 16 outputs a radio signal, the active noise cancellation module 17 outputs an active noise cancellation signal, and the output module 18 amplifies and outputs the signal.

[0020] The power supply module 14 includes a power supply 1 and a power management 4. The power supply 1 is connected to the power management 4, and the power management 4 is connected to the transmission module 15.

[0021] The transmission module 15 includes other audio sources 2, ADC circuit 5 and error microphone 11. Power management 4 is connected to ADC circuit 5, other audio sources 2 are connected to ADC circuit 5, and error microphone 11 is connected to ADC circuit 5.

[0022] Radio module 16 includes radio antenna 3 and radio chip 6. Radio antenna 3 is connected to radio chip 6, and radio chip 6 is connected to ADC circuit 5.

[0023] The active noise reduction module 17 comprises an ANC chip 7, an engine speed 12 and a Can communication 13, the ANC chip 7 is connected with the ADC circuit 5, and the engine speed 12 and the Can communication 13 are both connected with the ANC chip 7.

[0024] The output module 18 comprises a DAC circuit 8, a power amplifier 9 and a loudspeaker 10, the DAC circuit 8 is connected with the ANC chip 7, the power amplifier 9 is connected with the DAC circuit 8, and the loudspeaker 10 is connected with the power amplifier 9.

[0025] The power supply module 14 supplies power for the active noise reduction and radio integrated module of the commercial vehicle, the transmission module 15 can transmit the signals required by the radio module 16 and the active noise reduction module 17 to the radio module 16 and the active noise reduction module 17 according to the functional requirements, the radio signal is output through the radio module 16, the active noise reduction signal is output through the active noise reduction module 17, the radio signal and the active noise reduction signal are mixed and then input to the output module 18, and the signal is amplified and output through the output module 18, so that the functions of the radio and the active noise reduction are realized, the application of the devices with the function overlap of the two functional modules is reduced, and the use cost is greatly reduced.

[0026] As shown in Figs. 1-3 The power supply 1 supplies power for the active noise reduction and radio integrated module of the commercial vehicle, other sound sources 2 from the outside and the error microphone 11 of the active noise reduction input audio signals to the audio ADC circuit 5, the audio ADC circuit 5 transmits the signals related to the radio to the radio chip 6 and transmits the signals related to the noise reduction to the ANC chip 7 according to the functional requirements, the ANC chip 7 obtains the active noise reduction signal under the control of the ANC algorithm according to the related control signals in the engine speed 12 and the Can communication 13, the signal is mixed with the radio related signal and then output to the DAC circuit 8, and then the signal is amplified by the power amplifier 9 and output to the loudspeaker 10, so that the functions of the radio and the active noise reduction are realized.

[0027] The key input parts of the radio module 16 and the active noise reduction module 17 comprise an error microphone, an engine speed, a can communication, other sound sources and the like, the key output is a power amplifier output, and other components can be different according to actual requirements, the integrated common parts of the radio module 16 and the active noise reduction module 17 mainly comprise power management, audio input and audio output, and the specific implementation modes can be different according to the functional requirements and the implementation convenience, and the mixing of the active noise reduction and the radio can be realized by an algorithm in the active noise reduction chip or by a hardware circuit of two audio signals.

[0028] The utility model discloses realize the main function is: in the active noise reduction and radio integrated module working process, reduce radio module and active noise reduction module function overlapping device application, greatly reduce the use cost.

[0029] The above only is the preferred implementation of the utility model, should point out, for the ordinary technical personnel of this technical field, under the premise of not departing from the technical principle of the utility model, can also make a number of improvements and variations, these improvements and variations also should be regarded as the protection scope of the utility model.

Claims

1. A commercial vehicle active noise reduction and radio integrated module comprising a power supply module (14); characterized by, The transmission module (15), the radio module (16), the active noise reduction module (17) and the output module (18) are further included, the power supply module (14) is connected with the transmission module (15), the transmission module (15) is connected with the radio module (16) and the active noise reduction module (17), the radio module (16) is further connected with the active noise reduction module (17), and the output module (18) is connected with the active noise reduction module (17); The power supply module (14) supplies power for the active noise reduction and radio integrated module of the commercial vehicle, the transmission module (15) can transmit the signals required by the radio module (16) and the active noise reduction module (17) to the radio module (16) and the active noise reduction module (17) according to the functional requirements, the radio signal is output through the radio module (16), the active noise reduction signal is output through the active noise reduction module (17), and the output module (18) amplifies and outputs the signal.

2. An active noise cancellation and radio integrated module for a commercial vehicle as claimed in claim 1, wherein, The power supply module (14) includes a power supply (1) and a power management (4), the power supply (1) is connected with the power management (4), and the power management (4) is connected with the transmission module (15).

3. A commercial vehicle active noise cancellation and radio integrated module as claimed in claim 2, characterized in that, The transmission module (15) includes other sound sources (2), an ADC circuit (5) and an error microphone (11), the power management (4) is connected with the ADC circuit (5), the other sound sources (2) are connected with the ADC circuit (5), and the error microphone (11) is connected with the ADC circuit (5).

4. A commercial vehicle active noise cancellation and radio integrated module as claimed in claim 3, characterized in that, The radio module (16) includes a radio antenna (3) and a radio chip (6), the radio antenna (3) is connected with the radio chip (6), and the radio chip (6) is connected with the ADC circuit (5).

5. An active noise cancellation and radio integrated module for a commercial vehicle as claimed in claim 3, wherein, The active noise reduction module (17) includes an ANC chip (7), an engine speed (12) and a Can communication (13), the ANC chip (7) is connected with the ADC circuit (5), and the engine speed (12) and the Can communication (13) are connected with the ANC chip (7).

6. A commercial vehicle active noise cancellation and radio integrated module as claimed in claim 5, characterized in that, The output module (18) includes a DAC circuit (8), a power amplifier (9) and a loudspeaker (10), the DAC circuit (8) is connected with the ANC chip (7), the power amplifier (9) is connected with the DAC circuit (8), and the loudspeaker (10) is connected with the power amplifier (9).

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