CN102141800A - Automotive multi-voice prompt integrated control system and control method - Google Patents

Abstract

The invention discloses an automotive multi-voice prompt integrated control system. The system comprises a voice prompt demand input interface, a main control unit, a voice prompt audio storage unit and an audio playing unit; and the main control unit is in signal connection with the voice prompt demand input interface, the voice prompt audio storage unit and the audio playing unit respectively. The invention also discloses an automotive multi-voice prompt integrated control method. Integrated control of multi-voice prompt demands is realized by binding voice prompt demands and voice prompt files, upgrade of the multi-voice prompt system is achieved by simultaneously increasing and reducing the voice prompt demands and the corresponding voice prompt files, redevelopment is avoided, and the cost is reduced. The system can also be integrated with the conventional vehicle-mounted video and audio system so as to further reduce the implementation cost and save the internal space of a vehicle.

Description

Automobile multi-voice prompt integrated control system and control method

technical field

The invention relates to a voice prompt control system, in particular to an automobile multi-voice prompt integrated control system.

Background technique

With the development of automotive electronic technology, car manufacturers will remind users of certain states of the car with sound in consideration of convenience and safety. If the user does not pull out the key, the buzzer will sound; if the light is not turned off, if the key is pulled out and the door is opened, if the light is not turned off, the buzzer will also sound in order to avoid power consumption of the light When the seat belt is not fastened, the buzzer will also sound when the ignition is turned on and the seat belt is not fastened; when reversing, as the distance between the car and the obstacle shortens, the reversing radar buzzer will give a prompt The tone will also become shorter, etc.

With the intensification of competition, in order to improve the affinity of voice prompts, more and more voice prompts are used. For example, in some mid-to-high-end cars, the reversing radar may use voice prompts to indicate the distance between the car and the obstacle. distance; or an aftermarket installed burglar alarm will provide voice prompts for states such as door opening; voice prompts will be provided on navigation equipment, etc. However, what are seen in the market at present are all independent voice prompt devices, and when new prompt needs are added, the design must be changed again, which is equivalent to redeveloping a product device.

Contents of the invention

The technical problem to be solved by the present invention is to solve the shortcomings of single function and difficult upgrade existing in the existing automobile voice prompt control system, and to provide an automobile multi-voice prompt integrated control system and control method, through which multiple voice prompts can be realized. Integrated control of prompted requirements, and easy upgrades.

The present invention specifically adopts the following technical solutions:

An automobile multi-voice prompt integrated control system, comprising a voice prompt demand input interface, a main control unit, a voice prompt audio storage unit and an audio playback unit; the main control unit is respectively connected to the voice prompt demand input interface, the voice prompt audio storage unit, Audio playback unit signal connection.

The method for using the above-mentioned control system to carry out the integrated control of multiple voice prompts of a car comprises the following steps:

Step 1. Set the required voice prompt requirements and prompt voice files according to the needs, and there is a one-to-one correspondence between the voice prompt requirements and the prompt voice files;

Step 2, storing the corresponding relationship table between the voice prompt requirement obtained in step 1 and the prompt voice file in the main control unit, and storing the prompt voice file into the voice prompt audio storage unit;

Step 3, when the voice prompt demand input interface has a voice prompt demand signal input, the main control unit reads the corresponding prompt voice file from the voice prompt audio storage unit according to the correspondence table between the voice prompt demand and the prompt voice file, and controls all The audio playback unit plays the prompt voice file.

The present invention binds the voice prompt requirement with the voice prompt file, realizes the integrated control of multiple voice prompt requirements, and can simultaneously increase or decrease the voice prompt demand and the corresponding voice prompt file, thereby achieving the upgrade of the multi-voice prompt system, avoiding redevelopment, thereby reducing costs.

Description of drawings

Fig. 1 is the structural block diagram of automobile multi-voice prompt integrated control system of the present invention described in the specific embodiment;

Fig. 2 is a working flow chart of the automobile multi-voice prompt integrated control system of the present invention described in the specific embodiment. Detailed ways

The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

The automobile multi-voice prompt integrated control system of the present invention comprises a voice prompt demand input interface, a main control unit, a voice prompt audio storage unit and an audio playback unit; the main control unit is connected to the voice prompt demand input interface and the voice prompt audio storage unit respectively , Audio playback unit signal connection.

Considering that most automobiles adopt the CAN control bus, in this specific implementation manner, the voice prompt demand input interface is a CAN bus interface. Of course, the voice prompt demand input interface can also adopt other forms, such as frequency, hard line, LIN bus and so on.

In this specific implementation manner, the voice prompt audio storage unit is an SD card, which is small in size and highly versatile. Of course, other suitable storage media can also be selected according to actual conditions.

In this specific implementation manner, the audio playback unit includes an audio decoder, a D/A converter, and a speaker that are sequentially connected by signals.

In this specific embodiment, the microprocessor uses PIC18F2480, and this microprocessor has CAN controller, SPI controller, and the receiving pin of CAN controller connects the RxD end of CAN driver chip MCP2551, and the sending pin of CAN controller connects CAN Drive the TxD end of the chip MCP2551, so that the CAN controller can process the data received on the bus; the SPI controller pins are respectively connected to the SD card and the SPI port of the audio decoder STA013, and use the chip selection line to select the SD card as The object of SPI communication, and then read the audio file from the SD card, and then select the SPI communication object as the audio decoder ST013, and send the audio file data to the audio decoder STA013; the audio decoder STA013 decodes the audio data into sound data, and then Send it to the digital-to-analog converter CS4334 through the PCM bus; the digital-to-analog converter CS4334 converts the sound data into an analog signal and amplifies it to directly drive the speaker to play, achieving the purpose of voice prompts. Because the audio decoder STA013 needs to be configured and initialized through the IIC bus, and the microprocessor PIC18F2480 does not have an IIC controller, an IIC controller needs to be simulated through the I/O port, and this port is connected to the IIC port of the audio decoder STA013 to meet the initialization requirements. Its overall structure is shown in Figure 1.

The method for using the above-mentioned control system to carry out the integrated control of multiple voice prompts of a car comprises the following steps:

Step 1. Set the required voice prompt requirements and prompt voice files according to the needs, and there is a one-to-one correspondence between the voice prompt requirements and the prompt voice files;

The CAN bus is an international standard. The data transmitted on the CAN bus conforms to the standard specification. Each data frame message consists of a frame header ID and a maximum of 8 bytes of data. The frame header ID is assigned to the controller to send specific information. The standard frame header consists of 11 bits of data. Here, up to 16 frame header IDs can be provided for voice prompt requirements, such as 0x600-0x60F, and each message can carry up to 8 bytes (BYTE) of data, and each byte has 8 bits (bit) , each bit can correspond to a voice prompt requirement, and there is a corresponding prompt voice file; because each message has 8 bytes, and each byte has 8 bits, it can provide up to 16*8*8= 1024 data frame messages represent different voice prompt requirements, and each voice prompt demand corresponds to a prompt voice file, for example, "Please pull out the key", "Please turn off the small lights", "Please fasten your seat belt", "The speed is too fast" and other audio files. The corresponding prompt voice file can be defined by naming the file name. The file name consists of three parts: taking "ID007" as an example, the first three digits "ID0" represent the message corresponding to 0x600, and the fourth digit "0" represents the corresponding The byte position of this message is BYTE 0, and the fifth bit "7" indicates that the bit corresponding to this byte position is bit 7. In this way, the 1024 voice prompt demand input interfaces all have a corresponding unique prompt voice file. As long as the main control unit receives the message of the 16 frame header IDs, it will output the corresponding voice prompt according to the voice prompt requirement corresponding to the data frame.

Step 2, storing the corresponding relationship table between the voice prompt requirement obtained in step 1 and the prompt voice file in the main control unit, and storing the prompt voice file into the voice prompt audio storage unit;

According to step 1, the correspondence table between voice prompt requirements and prompt voice files shown in Table 1 below can be obtained.

Table 1

Step 3, when the voice prompt demand input interface has a voice prompt demand signal input, the main control unit reads the corresponding prompt voice file from the voice prompt audio storage unit according to the correspondence table between the voice prompt demand and the prompt voice file, and controls all The audio playback unit plays the prompt voice file;

When a certain control module of the car needs to be prompted, the control module will give a voice prompt demand signal through the CAN bus. Take the body controller BCM and instrument controller IPK of the phantom model as an example. The IPK needs the voice prompt that the speed is too high; assign a frame header ID of 0x608 to BCM, and the 5th bit of the 0th byte is assigned to the seat belt unfastened demand input, and the 2nd bit of the 5th byte Allocate to the demand input that the small light is not turned off, so that their corresponding voice prompt file names are ID805 and ID852; allocate a frame header ID of 0x60E to IPK, and assign the 0th bit of the third byte to the demand input of the vehicle speed is too high, so that the corresponding The prompt voice file is named IDE30; correspondingly, the video and audio files named as these three file names are stored in the SD card. During work, if the voice prompt module receives a message with a frame header ID of 0x608, and the 5th bit of its 0th byte is 1, then the broadcast file name is an audio-visual file of ID805. Correspondingly, according to different voice prompt requirements Broadcast different prompt voice files to realize multi-voice prompts. If multiple messages are received at the same time, the order of playing can be arranged according to the preset priority. For example, the input request that is located near the front of the message can be required to have a higher priority, that is, the voice prompts the end of the file. The position is judged by the size of two characters. The smaller the character, the closer to the front of the message, the higher the priority. This makes it easy to provide demand input signals with different priority levels for each message. In the model upgrade, if the tire pressure check function needs to be added, the high pressure and low pressure of the tire pressure are both used as voice prompt requirements, and a new frame header ID is assigned to it, and corresponding messages are sent when high pressure or low pressure occurs. The corresponding prompt voice files are stored in the voice prompt audio storage unit, so that the high-voltage and low-voltage alarm voice prompts can be realized, so that it is not necessary to redevelop the alarm system for it.

In this specific embodiment, the program flow chart of described automobile multi-voice prompt integrated control system is as shown in accompanying drawing 2, and microprocessor PIC18F2480 initializes CAN controller, then by IIC bus, audio decoder STA013 is initialized, and finally Obtain the message whose frame header ID is 0x600-0x60F through the CAN bus, and determine what voice prompt needs to be input, if there is input, determine the corresponding voice prompt file, and play the corresponding voice prompt file.

The car multi-voice prompt integrated control system of the present invention can also be integrated with the car audio-visual system originally configured on the car, thereby further reducing costs and saving space in the car. Specifically, the voice prompt audio storage unit shares the storage unit of the car video system, audio playback The unit shares the audio playback unit of the car audio-visual system.

Claims (6)

1. an automobile multi-speech prompting integrated control system is characterized in that, comprises voice suggestion demand input interface, main control unit, voice suggestion Audio storage unit and audio playing unit; Described main control unit is connected with voice suggestion demand input interface, voice suggestion Audio storage unit, audio playing unit signal respectively.

2. automobile multi-speech prompting integrated control system according to claim 1 is characterized in that described voice suggestion demand input interface is the CAN bus interface.

3. automobile multi-speech prompting integrated control system according to claim 1 is characterized in that described voice suggestion Audio storage unit is the SD card.

4. automobile multi-speech prompting integrated control system according to claim 1 is characterized in that, described audio playing unit comprises audio decoder, D/A converter, the loudspeaker that signal in turn connects.

5. automobile multi-speech prompting integrated control system according to claim 1 is characterized in that described automobile carries the vehicle carried video system; The storage unit of the shared vehicle-mounted audio-video system of described voice suggestion Audio storage unit, the audio playing unit of the shared vehicle-mounted audio-video system of described audio playing unit.

6. the method for using the described control system of claim 1 to carry out the integrated control of automobile multi-speech prompting is characterized in that, may further comprise the steps:

Step 1, set required voice suggestion demand and suggestion voice file as required, corresponding one by one between voice suggestion demand and the suggestion voice file;

Step 2, the mapping table of resulting voice suggestion demand of step 1 and suggestion voice file is deposited in the described main control unit, deposit the suggestion voice file in described voice suggestion Audio storage unit;

Step 3, in voice suggestion desired signal when input, arranged when voice suggestion demand input interface, main control unit reads the corresponding prompt voice file according to the mapping table of voice suggestion demand and suggestion voice file from the voice suggestion Audio storage unit, and controls described audio playing unit and play this suggestion voice file.

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