Vehicle dialogue system

Abstract

To provide a vehicle dialogue system that can operate an in-vehicle device by voice and can give a natural response to an utterance, such as a small talk, that is not intended to operate the in-vehicle device.SOLUTION: A voice dialogue unit 42 determines whether or not text data converted by a voice recognition unit 41 indicates an operation instruction for an in-vehicle device 11. If the voice dialogue unit 42 determines that the text data indicates the operation instruction for the in-vehicle device 11, the voice dialogue unit controls the in-vehicle device 11 in accordance with the operation instruction. If the voice dialogue unit 42 determines that the text data does not indicate the operation instruction for the in-vehicle device 11, the voice dialogue unit inputs the text data of the voice to dialogue AI 10 as input information S1.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a dialogue system for a vehicle. [Background technology]

[0002] A voice agent service has been proposed that responds by voice when a user speaks (Patent Document 1). The voice agent service of Patent Document 1 is a system that responds only to pre-defined speech data and returns a reply. For this reason, when an utterance other than the pre-defined utterance content is made, the voice agent service of Patent Document 1 responds with "I don't know" or replies by linking it to the closest pre-defined utterance, so a natural response like that of a human conversation is not returned.

[0003] In recent years, conversational AI (generative AI) such as ChatGPT has been proposed that can learn from the vast amount of information available on the Internet and have more natural conversations. However, while this type of conversational AI is suitable for casual conversations, it does not have the function to operate in-vehicle devices. For this reason, there was a problem in that it could not respond when the driver spoke with the aim of operating the device. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2014-98844 A Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention has been made in consideration of the above-mentioned circumstances, and its object is to provide a dialogue system for a vehicle that allows operation of in-vehicle equipment by voice and that can respond naturally to utterances that are not intended to operate the in-vehicle equipment, such as casual conversation. [Means for solving the problem]

[0006] In order to achieve the above object, the vehicle dialogue system according to the present invention has the following features. A dialogue system for a vehicle using a dialogue type AI that outputs response information made of text data when input information made of text data is input, A voice input unit for inputting a voice uttered by a driver; a voice recognition unit that converts the voice input by the voice input unit into text data; an equipment control unit that controls the in-vehicle equipment in response to the operation instruction when the text data converted by the voice recognition unit is determined to represent an operation instruction for the in-vehicle equipment; a voice synthesis unit that converts the response information output from the dialogue AI into voice in response to the input information consisting of the text data converted by the voice recognition unit when it is determined that the input information does not indicate an operation instruction for the in-vehicle device; A voice output unit that outputs the voice converted by the voice synthesis unit. It is a dialogue system for vehicles. Effect of the Invention

[0007] The vehicle dialogue system according to the present invention has the advantage that it is possible to operate vehicle-mounted equipment by voice, and further, it is possible to provide a natural response to utterances that are not intended to operate the vehicle-mounted equipment, such as casual conversation.

[0008] The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading the following description of the embodiment of the present invention (hereinafter, referred to as "embodiment") with reference to the accompanying drawings. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a block diagram showing an embodiment of a dialogue system for a vehicle according to the present invention. [Diagram 2]FIG. 2 is a diagram showing an example of a data table stored in the ROM shown in FIG. [Diagram 3] FIG. 3 is a diagram showing the periphery of an instrument panel of a vehicle equipped with the vehicular dialogue system shown in FIG. [Figure 4] FIG. 4 is a flowchart showing a processing procedure of the microcomputer constituting the vehicle communication system shown in FIG. 1 in the first embodiment. [Diagram 5] FIG. 5 is an explanatory diagram for explaining the operation in Sp5 of FIG. [Figure 6] FIG. 6 is a flowchart showing a processing procedure of a microcomputer constituting the vehicle communication system shown in FIG. 1 in the second embodiment. [Figure 7] FIG. 7 is a block diagram of a vehicle dialogue system according to another embodiment. [Figure 8] FIG. 8 is a block diagram of a vehicle dialogue system according to another embodiment. [Figure 9] FIG. 9 is a block diagram of a vehicle dialogue system according to another embodiment. [Figure 10] FIG. 10 is a diagram showing another example of the data table stored in the ROM shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] (First embodiment) A first embodiment of the present invention will be described below with reference to the drawings.

[0011] The vehicle dialogue system 1 of the first embodiment is a system that is mounted on a vehicle and dialogues with a driver using a dialogue type AI (Artificial Intelligence) 10. The dialogue type AI 10 is configured, for example, by ChatGPT, and when input information S1 consisting of text data is input, response information S2 consisting of text data is output.

[0012] The vehicle dialogue system 1 includes a microphone 2 as a voice input unit, a communication module 3, a microcomputer 4 (hereinafter abbreviated as "microcomputer 4"), a speaker 5 as a voice output unit, a display 6, and a ROM (Read Only Memory) 7 (storage unit). The microphone 2 inputs the voice spoken by the driver to the microcomputer 4. The communication module 3 is for communicating with the dialogue type AI 10 via an Internet communication network (not shown), and is composed of a circuit, an antenna, etc. for connecting to the Internet communication network. In this embodiment, the communication module 3, the microcomputer 4, and a ROM 7 described later are mounted on the same control board 100.

[0013] The microcomputer 4 has a memory such as a RAM (Random Access Memory) or a ROM, and a CPU (Central Processing Unit) that operates according to a program stored in the memory, and controls the entire vehicular dialogue system 1.

[0014] The microcomputer 4 has a voice recognition unit 41, a voice dialogue unit 42, a voice synthesis unit 44, and a drawing processing unit 45. The voice recognition unit 41 converts the voice input by the microphone 2 into text data and inputs it to the voice dialogue unit 42. The voice dialogue unit 42 inputs the text data converted by the voice recognition unit 41 to the interactive AI 10 as input information S1.

[0015] Vehicle information S3 and person information S4 are also input to the voice dialogue unit 42. The microcomputer 4 is connected to sensors and devices mounted on the vehicle via a communication network such as a Controller Area Network (CAN) provided on the vehicle. The vehicle information S3 is information indicating the state of the vehicle acquired from sensors and devices mounted on the vehicle.

[0016] As shown in Fig. 2, the ROM 7 stores a data table consisting of operation instructions of the in-vehicle device 11, instruction text data corresponding to the operation instructions of the in-vehicle device 11, and response text data corresponding to the instruction text data. In the example shown in Fig. 2, one instruction text data is stored for one operation instruction, but this is not limited to this. A plurality of instruction text data may be stored for one operation instruction. For example, the operation instruction "air conditioner ON" may be associated with instruction text data of "hot" and "cold" in addition to "turn on the air conditioner."

[0017] In addition, the voice dialogue unit 42 receives human information S4, which is the detection result from a driver monitor that detects the driver's state (whether the driver is dozing, driving aimlessly, or looking away from the road) based on an image of the driver's face.

[0018] The voice dialogue unit 42 is connected to an in-vehicle device 11 mounted on the vehicle and can control the in-vehicle device 11. The in-vehicle device 11 can be, for example, an air conditioner mounted on the vehicle, a motor for opening and closing windows, headlights, an ECU (Electronic Control Unit) for controlling an ACC (Adaptive Cruise Control) function, and the like.

[0019] The voice dialogue unit 42 functions as a determination unit, and compares the text data converted by the voice recognition unit 41 with the instruction text data shown in Fig. 2, and if there is a match, determines that the text data converted by the voice recognition unit 41 indicates an operation instruction for the in-vehicle device 11. If there is no match, the voice dialogue unit 42 determines that the text data converted by the voice recognition unit 41 does not indicate an operation instruction for the in-vehicle device 11.

[0020] When the voice dialogue unit 42 determines that the command text data indicates an operation instruction for the in-vehicle device 11, it functions as a device control unit and controls the in-vehicle device 11 according to the operation instruction corresponding to the compared instruction text data. Furthermore, when the voice dialogue unit 42 determines that the command text data indicates an operation instruction for the in-vehicle device 11, it inputs response text data corresponding to the matched instruction text data to the voice synthesis unit 44.

[0021] If the voice dialogue unit 42 determines that the input does not indicate an operation instruction for the in-vehicle device 11, it transmits a prompt including the text data converted by the voice recognition unit 41 to the interactive AI 10 as input information S1. The voice dialogue unit 42 inputs response information S2 from the interactive AI 10, and outputs the input response information S2 to the voice synthesis unit 44. The voice synthesis unit 44 converts the response text data and the response information S2 into voice, and outputs it to the speaker 5. The speaker 5 outputs the voice converted by the voice synthesis unit 44.

[0022] While the voice dialogue unit 42 is outputting the voice from the speaker 5, it outputs a display request to the drawing processing unit 45 to display the character on the display 6. The display 6 is disposed on the instrument panel between the driver's seat and the passenger seat as shown in Fig. 3. The drawing processing unit 45 outputs to the display 6 an image that makes it appear as if the character is speaking the voice output from the speaker 5.

[0023] Next, the operation of the vehicular dialogue system 1 configured as described above will be described with reference to the flowchart shown in Fig. 4. When the microcomputer 4 detects that the vehicular dialogue system 1 is turned on, such as when the ignition is turned on, the microcomputer 4 starts the process shown in Fig. 4. First, the microcomputer 4 goes into a standby state until the driver starts speaking (Sp1). When the driver speaks (Y in Sp2), the microcomputer 4 performs a voice recognition process to convert the voice spoken by the driver into text data (Sp3).

[0024] If the speech has not ended (N in Sp4), the microcomputer 4 returns to Sp3 and continues the speech recognition process. On the other hand, if the speech has ended (Y in Sp4), the microcomputer 4 performs a determination process to determine whether the text data of the speech converted by the speech recognition process indicates an operation instruction for the in-vehicle device 11 (Sp5).

[0025] In the determination process, the microcomputer 4 compares the voice text data with the multiple instruction text data shown in Fig. 2 one by one. For example, if the voice text data is "Turn on ACC", the microcomputer 4 compares it with the instruction text data "Turn on the air conditioner", "Open the windows", "Turn on the headlights", and "Turn on ACC" in order as shown in Fig. 5.

[0026] If there is instruction text data that matches the text data of the voice, the microcomputer 4 determines that the text data of the voice indicates an operation instruction for the in-vehicle device 11. The microcomputer 4 is not limited to determining that a perfect match of the text data is a match, and may determine that a match is present when the word matching rate is equal to or greater than a certain value.

[0027] Next, when the microcomputer 4 determines through the determination process that the text data of the voice indicates an operation instruction for the in-vehicle device 11 (Y in Sp6), it controls the in-vehicle device 11 according to the operation instruction corresponding to the matching instruction text data (Sp7). For example, when the microcomputer 4 determines through the determination process that the text data of the voice matches the instruction text data "Turn on the ACC function", it transmits a request to turn on the ACC function to the ECU that controls the ACC function according to the operation instruction.

[0028] Next, the microcomputer 4 acquires response text data corresponding to the matched instruction text data from the data table (Sp8). Next, the microcomputer 4 performs a voice synthesis process to convert the acquired response text data into voice and output it from the speaker 5, and after reading out the response text data (Sp9), proceeds to Sp10. For example, in the determination process, if the voice text data matches the instruction text data "Turn on the ACC function," the microcomputer 4 acquires response text data "ACC has been turned on. The speed is set to XX km / h, and the vehicle distance is set to close" in Sp8, and the response text data is read out from the speaker 5.

[0029] On the other hand, if the microcomputer 4 determines through the determination process that the text data of the voice does not indicate an operation instruction for the in-vehicle device 11 (N in Sp6), it creates a prompt including the text data of the voice (Sp11). In Sp11, the microcomputer 4 may create only the text data of the voice as the prompt, or may create a prompt by adding text data corresponding to the vehicle information S3 and the person information S4 to the text data of the voice.

[0030] Next, the microcomputer 4 functions as a first input control unit and transmits the created prompt as input information S1 to the conversational AI 10 (Sp12). When the microcomputer 4 receives response information S2 from the conversational AI 10 (Y in Sp13), it converts the received response information S2 into voice and outputs it from the speaker 5, reading out the response information S2 (Sp14), and then proceeds to Sp10.

[0031] In Sp10, if the microcomputer 4 detects that the vehicular dialogue system 1 is off, such as when the ignition is off (Y in Sp10), it ends the process. If the microcomputer 4 does not detect that the vehicular dialogue system 1 is off (N in Sp10), it returns to Sp1 and waits for the driver to speak again.

[0032] According to the above-described embodiment, the microcomputer 4 determines whether the text data of the voice indicates an operation instruction for the in-vehicle device 11, and when it determines that the text data of the voice indicates an operation instruction for the in-vehicle device 11, it controls the in-vehicle device 11 according to the operation instruction. When the microcomputer 4 determines that the text data does not indicate an operation instruction for the in-vehicle device 11, it transmits a prompt including the text data of the voice to the dialogue AI 10. This allows the vehicle dialogue system 1 to operate the in-vehicle device 11 by voice, and further to respond naturally to utterances that are not intended to operate the in-vehicle device 11, such as casual conversation.

[0033] According to the embodiment described above, the instruction text data is stored in the ROM 7. The microcomputer 4 compares the instruction text data with the voice text data, and determines whether the instruction text data indicates an operation instruction for the in-vehicle device 11 based on whether there is a matching instruction text data. This allows the microcomputer 4 to easily determine whether the voice text data indicates an operation instruction for the in-vehicle device 11.

[0034] According to the above-mentioned embodiment, the response text data is stored in the ROM 7. When the microcomputer 4 determines that the response text data indicates an operation instruction for the in-vehicle device 11, the microcomputer 4 converts the response text data corresponding to the matching instruction text data into voice and reads it out. This allows the microcomputer 4 to respond appropriately when the driver issues an operation instruction for the in-vehicle device 11.

[0035] Second embodiment Next, a second embodiment will be described.

[0036] The vehicle dialogue system 1 of the second embodiment has the same configuration as the vehicle dialogue system 1 of the first embodiment shown in Fig. 1, so a detailed description thereof will be omitted here. In the first embodiment, the voice dialogue unit 42 functions as the determination unit, but in the second embodiment, the dialogue AI 10 functions as the determination unit.

[0037] Next, the operation of the vehicle dialogue system 1 of the second embodiment will be described with reference to the flowchart shown in Fig. 6. When the microcomputer 4 detects that the vehicle dialogue system 1 is turned on, such as when the ignition is turned on, the microcomputer 4 starts the process shown in Fig. 6. First, the microcomputer 4 acquires information on the in-vehicle devices installed in the vehicle (in-vehicle device information) from the vehicle information S3 acquired from a CAN (Controller Area Network) or the like (Sp21). Next, the microcomputer 4 generates and transmits a prompt to notify the acquired in-vehicle device information to the interactive AI 10 (Sp22).

[0038] An example of a prompt transmitted by Sp22 will be described. The microcontroller 4 converts the acquired in-vehicle device information into text data. After that, the microcontroller 4 generates a prompt with the text data of the converted in-vehicle device information added between the standard phrase: "You are now in a car. The vehicle is equipped with functions. Please answer the following questions taking this content into consideration" and the standard phrase: "You are now in a car. The vehicle is equipped with functions such as ACC, wipers, headlights, air conditioner / heater, etc. Please answer the following questions taking this content into consideration" as a result, the text data "You are now in a car. The vehicle is equipped with functions such as ACC, wipers, headlights, air conditioner / heater, etc. Please answer the following questions taking this content into consideration" is transmitted to the conversational AI 10.

[0039] Thereafter, the microcomputer 4 goes into a standby state until the driver starts speaking (Sp23). When the driver speaks (Y in Sp24), the microcomputer 4 performs a voice recognition process to convert the driver's voice into text data (Sp25).

[0040] If the speech has not ended (N in Sp26), the microcomputer 4 returns to Sp25 and continues the speech recognition process. On the other hand, when the speech has ended (Y in Sp26), the microcomputer 4 functions as a second input control unit, generates a prompt including text data of the speech converted by the speech recognition process, a command to determine whether or not the text data indicates an operation instruction for the in-vehicle device 11, and, if the text data does not indicate an operation instruction, a command to transmit response information according to the text data (Sp27), and transmits the generated prompt (Sp28).

[0041] An example of a prompt sent by Sp28 will be described below. The microcontroller 4 generates and sends a prompt with the voice text data followed by a standard phrase: "Is this content intended for operational purposes? If it is intended for operational purposes, answer 'A'. If not, answer so that a conversation can be established. However, please do not answer 'No.'"

[0042] When the microcontroller 4 receives the response information S2 from the conversational AI 10 (Y in Sp29), it judges whether or not to indicate an operation instruction based on the response information S2 (Sp30). For example, when the microcontroller 4 sends a prompt in Sp28 saying "Is 'Turn on the wipers' intended to be an operation instruction? If it is intended to be an operation instruction, answer 'A'. If it is not, please answer so that a conversation can be established. However, please do not answer 'No'," and receives the response information S2 of 'A' in response to this, the microcontroller 4 judges that it is an operation instruction (Y in S30).

[0043] If it is determined that the received text data is an operation instruction (Y in Sp30), the microcomputer 4 compares the text data converted by the voice recognition unit 41 with the instruction text data shown in Fig. 2, and controls the in-vehicle device 11 according to the operation instruction corresponding to the matching instruction text data (Sp31). Next, the microcomputer 4 acquires response text data corresponding to the matching instruction text data from the data table in Fig. 2 (Sp32). The microcomputer 4 performs a voice synthesis process to convert the acquired response text data into voice and output it from the speaker 5, reads out the response text data (Sp33), and then proceeds to Sp35.

[0044] For example, if the microcontroller 4 sends a prompt in Sp28 saying "Hello. Is this content intended for operational purposes? If it is intended for operational purposes, answer "A". If it is not, answer so that a conversation can be established. However, please do not answer using "No." and receives response information S2 saying "Hello. I am happy to talk to you. Is there anything I can ask you or help you with?", the microcontroller 4 will determine that this is not an operational instruction (N in S30).

[0045] If the microcomputer 4 determines that the received response information S2 is not an operation instruction, it converts the received response information S2 into voice, outputs the voice from the speaker 5, and reads out the response information S2 (Sp34), and then proceeds to Sp35.

[0046] In Sp35, if the microcomputer 4 detects that the vehicular dialogue system 1 is off, such as when the ignition is off (Y in Sp35), it ends the process. If the microcomputer 4 does not detect that the vehicular dialogue system 1 is off (N in Sp35), it returns to Sp23 and waits for the driver to speak again.

[0047] According to the above-mentioned embodiment, the conversational AI 10 functions as a judgment unit. In the case of the first embodiment, whether the text data uttered by the driver is an operation instruction or not, it is necessary to compare it with each instruction text data in the data table shown in Fig. 2. In contrast, according to the second embodiment, if the text data uttered by the driver is not for the purpose of operation, it is not necessary to compare it with the instruction text data in the data table shown in Fig. 2, which improves the processing speed and the response speed to the driver's utterance.

[0048] The present invention is not limited to the above-described embodiment, and can be appropriately modified, improved, etc. In addition, the material, shape, size, number, arrangement location, etc. of each component in the above-described embodiment are arbitrary as long as the present invention can be achieved, and are not limited.

[0049] According to the above-mentioned embodiment, in the vehicle dialogue system 1 shown in Fig. 1, the dialogue AI 10 communicates with the vehicle dialogue system 1 via the Internet communication network, but this is not limited to this. As in the vehicle dialogue system 1B shown in Fig. 7, the dialogue AI 10B consisting of a microcomputer may be mounted on the control board 100. According to the vehicle dialogue system 1B shown in Fig. 7, dialogue can be performed even in a poor communication environment.

[0050] According to the vehicle dialogue systems 1 and 1B shown in Fig. 1 and Fig. 7, the microcomputer 4 functions as a voice recognition unit, but this is not limited to this. As in the vehicle dialogue systems 1C and 1D shown in Fig. 8 and Fig. 9, the microcomputer 4 may be configured to communicate with a server 12 that functions as a voice recognition unit and a determination unit. The server 12 can access a database (DB) 13 in which the data table shown in Fig. 2 is stored.

[0051] In this case, the microcomputer 4 transmits the voice input from the microphone 2 to the server 12. The server 12 converts the received voice into text data and determines whether or not the voice indicates an instruction to operate the in-vehicle device 11 by referring to a data table stored in the DB 13. The server 12 also transmits the determination result and the text data of the voice to the microcomputer 4. This eliminates the need for the microcomputer 4 to have the determination functions of the voice recognition unit 41 and the voice dialogue unit 42, thereby reducing the processing load.

[0052] 8 and 9, the microcomputer 4 does not have the voice recognition unit 41, but the microcomputer 4 may have the voice recognition unit 41. In this case, the microcomputer 4 converts a part of the voice into text data in the voice recognition unit 41, and converts the rest of the voice into text data in the server 12. In this case, the processing load of the microcomputer 4 can be reduced compared to when all voice recognition is performed by the microcomputer 4.

[0053] According to the first and second embodiments described above, the microcontroller 4 compares the voice text data with the multiple instruction text data shown in FIG. 2 one by one, and determines whether the instruction is for the purpose of operation, and if so, the content of the instruction; however, this is not limited to this.

[0054] 10, a data table consisting of operation instructions for the in-vehicle device 11, instruction keywords corresponding to the operation instructions for the in-vehicle device 11, and response text data corresponding to the instruction keywords is stored in the ROM 7. The microcomputer 4 extracts keywords from the text data of the voice, compares the extracted keywords with the instruction keywords, and if there is a match, determines that the purpose is an operation, and executes the operation instruction corresponding to the matching instruction keyword.

[0055] Here, the features of the above-described embodiment of the vehicular dialogue system according to the present invention will be briefly summarized and listed in the following [1] to [5].

[0056] [1] A dialogue system (1, 1B, 1C, 1D) for a vehicle using a dialogue type AI (10) that outputs response information (S2) made of text data when input information (S1) made of text data is input, A voice input unit (2) for inputting a voice uttered by a driver; a voice recognition unit (12) that converts the voice input by the voice input unit (2) into text data; a device control unit (42) that controls the in-vehicle device (11) in response to the operation instruction when the text data converted by the voice recognition unit (12) is determined to represent an operation instruction for the in-vehicle device (11); a voice synthesis unit (44) for converting the response information (S2) output from the dialogue AI (10) into voice in response to the input information (S1) consisting of the text data converted by the voice recognition unit (12) when it is determined that the input information (S1) does not indicate an operation instruction for the in-vehicle device (11); and a voice output unit (5) that outputs the voice converted by the voice synthesis unit (44). Dialogue system for vehicles (1, 1B, 1C, 1D).

[0057] According to the vehicle dialogue system (1, 1B, 1C, 1D) having the configuration [1] above, the vehicle-mounted device (11) can be operated by voice, and further, natural responses can be made to utterances that are not intended to operate the vehicle-mounted device (11), such as casual conversation.

[0058] [2] In the vehicle dialogue system (1, 1B, 1C, 1D) according to [1], a determination unit (42,12) that determines whether the text data converted by the voice recognition unit (12) indicates an operation instruction for the in-vehicle device (11); and a first input control unit (42) that inputs the text data converted by the voice recognition unit (12) to the interactive AI (10) as the input information (S1) when the determination unit (42, 12) determines that the text data does not indicate an operation instruction for the in-vehicle device (11). Dialogue system for vehicles (1, 1B, 1C, 1D).

[0059] According to the vehicle dialogue system (1, 1B, 1C, 1D) having the configuration [2] above, the determination unit (42, 12) can input text data that does not indicate an operation instruction to the dialogue type AI (10).

[0060] [3] In the vehicle dialogue system (1, 1B, 1C, 1D) according to [1], a second input control unit (42) that inputs the text data converted by the voice recognition unit (12), a command to determine whether the text data indicates an operation instruction for the in-vehicle device (11), and a command to transmit the response information (S2) corresponding to the text data if the text data does not indicate the operation instruction, as the input information (S1) to the interactive AI (10); When the device control unit (42) receives the response information (S2) indicating an operation instruction for the in-vehicle device (11) from the interactive AI (10), the device control unit (42) controls the in-vehicle device (11) according to the operation instruction, When the voice synthesis unit (44) receives the response information (S2) from the dialogue AI (10) indicating that the response information (S2) does not indicate an operation instruction for the in-vehicle device (11), the voice synthesis unit (44) converts the response information (S2) corresponding to the text data into voice. Dialogue system for vehicles (1, 1B, 1C, 1D).

[0061] According to the configuration of [3] above, the dialogue AI (10) can determine whether the text data indicates an operation instruction, thereby improving the processing ability.

[0062] [4] In the vehicle dialogue system (1, 1B, 1C, 1D) described in [2], a storage unit (7, 13) for storing instruction text data corresponding to an operation instruction of the in-vehicle device (11); The determination unit (42, 12) compares the instruction text data stored in the storage unit with the text data converted by the voice recognition unit (12), and makes the determination based on whether or not there is a matching instruction text data. Dialogue system for vehicles (1, 1B, 1C, 1D).

[0063] According to the vehicle dialogue system (1, 1B, 1C, 1D) having the configuration [4] above, the determination unit (42, 12) can easily determine whether or not the text data of the voice indicates an operation instruction for the in-vehicle device (11).

[0064] [5] In the vehicle dialogue system (1, 1B, 1C, 1D) described in [4], The storage unit (7, 13) further stores response text data corresponding to the instruction text data, When the determination unit (42, 12) determines that the received text data indicates an instruction to operate the in-vehicle device (11), the determination unit (42, 12) converts the response text data corresponding to the matched instruction text data into the voice by the voice synthesis unit (44). Dialogue system for vehicles (1, 1B, 1C, 1D).

[0065] According to the vehicular dialogue system (1, 1B, 1C, 1D) having the configuration [5] above, when the driver issues an instruction to operate the in-vehicle device (11), an appropriate response can be made. [Explanation of symbols]

[0066] 1,1B,1C,1D Vehicle dialogue system 2 Microphone (audio input section) 5 Speaker (audio output section) 7 ROM (memory section) 10 Conversational AI 11 In-vehicle equipment 12 Server (voice recognition unit, judgment unit) 13 DB (storage unit) 41 Voice Recognition Unit 42 Voice dialogue unit (determination unit, device control unit, first input control unit, second input control unit) 44 Voice synthesis section

Claims

1. A dialogue system for a vehicle using a dialogue type AI that outputs response information made of text data when input information made of text data is input, A voice input unit for inputting a voice uttered by a driver; a voice recognition unit that converts the voice input by the voice input unit into text data; an equipment control unit that controls the in-vehicle equipment in response to the operation instruction when the text data converted by the voice recognition unit is determined to represent an operation instruction for the in-vehicle equipment; a voice synthesis unit that converts the response information output from the interactive AI into voice in response to the input information consisting of the text data converted by the voice recognition unit when it is determined that the input information does not indicate an operation instruction for the in-vehicle device; and A voice output unit that outputs the voice converted by the voice synthesis unit. Dialogue system for vehicles.

2. 2. The vehicle dialogue system according to claim 1, a determination unit that determines whether the text data converted by the voice recognition unit indicates an operation instruction for the in-vehicle device; and a first input control unit that inputs the text data converted by the voice recognition unit as the input information to the interactive AI when the determination unit determines that the input does not indicate an operation instruction for the in-vehicle device. Dialogue system for vehicles.

3. 2. The vehicle dialogue system according to claim 1, a second input control unit that inputs the text data converted by the voice recognition unit, a command to determine whether the text data indicates an operation instruction for the in-vehicle device, and a command to transmit the response information corresponding to the text data if the text data does not indicate the operation instruction, as the input information to the interactive AI; When the device control unit receives the response information indicating an operation instruction for the in-vehicle device from the interactive AI, the device control unit controls the in-vehicle device according to the operation instruction, When the voice synthesis unit receives the response information indicating that the response information does not indicate an operation instruction for the in-vehicle device from the conversational AI, the voice synthesis unit converts the response information corresponding to the text data into voice. Dialogue system for vehicles.

4. 3. The vehicle dialogue system according to claim 2, a storage unit for storing instruction text data corresponding to an operation instruction of the in-vehicle device; the determination unit compares the instruction text data stored in the storage unit with the text data converted by the voice recognition unit, and makes the determination based on whether or not there is any instruction text data that matches the instruction text data. Dialogue system for vehicles.

5. 5. The vehicle dialogue system according to claim 4, The storage unit further stores response text data corresponding to the instruction text data, When the determination unit determines that the instruction text data indicates an operation instruction for the in-vehicle device, the determination unit converts the response text data corresponding to the matched instruction text data into the voice by the voice synthesis unit. Dialogue system for vehicles.

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