Vehicle dialogue system

Abstract

To provide a vehicle dialogue system that responds to a driver's utterance in accordance with a vehicle scene.SOLUTION: A voice recognition unit 41 converts the voice input from a microphone 2 into text data. A voice dialogue unit 42 periodically collects vehicle information S3 and acquires prompt additional information (text data) corresponding to the collected vehicle information S3. The voice dialogue unit 42 transmits the text data converted by the voice recognition unit 41 and the prompt additional information, as input information S1, to interactive AI 10. A voice synthesis unit 44 converts response information S2 from the interactive AI 10 into voice, and a speaker 5 outputs the response information S2.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). In the voice agent service of Patent Document 1, it is proposed to return predetermined noise data if the user's speech content is not a search. However, in the voice agent service of Patent Document 1, since the noise data is extracted from among predetermined data, a natural response like that of a human conversation is not returned.

[0003] In recent years, conversational AI (generative AI) like ChatGPT has been proposed that can learn from the vast amount of information available on the Internet and have more natural conversations. However, such conversational AI was not designed to be used in vehicles. For this reason, there was an issue that even if the driver's speech was directly input to the conversational AI, the AI ​​would respond in a way that did not match the vehicle scene. This resulted in the driver having to change the way they spoke several times until they received the desired response. [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 view of the above-mentioned circumstances, and an object of the present invention is to provide a dialogue system for a vehicle that responds to a driver's utterance in a manner suited to the vehicle scene. [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; A collection unit that periodically collects vehicle information; an acquisition unit that acquires text data corresponding to the collected vehicle information; a first input control unit that inputs the text data converted by the voice recognition unit as the input information to the dialogue AI; a second input control unit that inputs the text data corresponding to the vehicle information acquired by the acquisition unit as the input information to the interactive AI; A voice synthesis unit that converts the response information from the dialogue AI into voice; 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 an effect of providing a response to the driver's utterance that is suited to the vehicle scene.

[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 preferred 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 dialogue system shown in FIG. [Diagram 5] FIG. 5 is a flowchart showing a processing procedure of the microcomputer constituting the vehicle dialogue system shown in FIG. [Figure 6] FIG. 6 is an explanatory diagram for explaining the operation in Sp9 in FIG. [Figure 7] FIG. 7 is an explanatory diagram for explaining the operation of Sp11 in FIG. [Figure 8] FIG. 8 is an explanatory diagram for explaining the operation of Sp11 in FIG. 4 in 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 block diagram of a vehicle dialogue system according to another embodiment. [Figure 11] FIG. 11 is a block diagram of a vehicle dialogue system according to another embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0011] The vehicle dialogue system 1 of the 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 as a 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 and the like to the interactive AI 10 as input information S1.

[0015] Vehicle information S3 and person information S4 are 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 CAN (Controller Area Network) provided in the vehicle. The vehicle information S3 is information indicating the state of the vehicle acquired from sensors and devices mounted on the vehicle. Examples of the vehicle information S3 include vehicle speed information, on / off information of an ACC (Adaptive Cruise Control) function that follows a vehicle ahead, on / off information of headlights, operation information of an air conditioner / heater as the in-vehicle device 11, operation information of a navigation device as the in-vehicle device 11, outside temperature information, remaining fuel information, and position information of a shift lever. The vehicle information S3 input from the sensor may be not only a measurement value measured by the sensor, but also a moving average or weighted average of the measurement value, or a value calculated using the measurement value, the moving average, or the weighted average of the measurement value.

[0016] 2, the ROM 7 stores a data table consisting of vehicle information S3 and prompt additional information corresponding to the vehicle information S3. The prompt additional information consists of text data. The voice dialogue unit 42 functions as a collection unit and periodically collects the vehicle information S3. The voice dialogue unit 42 functions as an acquisition unit and refers to the data table shown in FIG. 2 to acquire prompt additional information corresponding to the collected vehicle information S3.

[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] Furthermore, the voice dialogue unit 42 is connected to an in-vehicle device 11 mounted in the vehicle, and can control the in-vehicle device 11. The in-vehicle device 11 may be, for example, an air conditioner, a display such as a head-up display, or an audio device mounted in the vehicle.

[0019] The voice dialogue unit 42 functions as a first input control unit and a second input control unit, and transmits voice text data and prompt additional information as input information S1 to the dialogue AI 10. The voice dialogue unit 42 inputs response information S2 from the dialogue AI 10, and outputs the input response information S2 to the voice synthesis unit 44. The voice synthesis unit 44 converts 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.

[0020] 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.

[0021] Next, the operation of the vehicle dialogue system 1 configured as above will be described with reference to the flowcharts shown in Figures 4 and 5. 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 Figures 4 and 5. First, the microcomputer 4 collects vehicle information S3 (Sp1). Next, the microcomputer 4 uses the data table shown in Figure 2 to obtain prompt addition information for the collected vehicle information S3 (Sp2).

[0022] Next, the microcomputer 4 determines whether the prompt additional information acquired in the current Sp2 differs from the prompt additional information acquired in the previous Sp2 and whether there is any prompt additional information to be updated (Sp3).

[0023] If the microcomputer 4 determines that there is prompt additional information to be updated (Y in Sp3), it updates the latest prompt additional information to the prompt additional information acquired in Sp2 (Sp4).If the microcomputer 4 determines that there is no prompt additional information to be updated (N in Sp3), it proceeds immediately to Sp5 without updating the latest prompt additional information.

[0024] After that, when the driver speaks (Y in Sp5), the microcomputer 4 performs a voice recognition process to convert the driver's voice into text data (Sp6). If the driver has not finished speaking (N in Sp7), the microcomputer 4 returns to Sp6 and continues the voice recognition process. On the other hand, when the driver finishes speaking (Y in Sp7), the microcomputer 4 generates a prompt to be sent to the conversational AI 10 (Sp8).

[0025] In Sp8, the microcomputer 4 generates a prompt by adding prompt additional information corresponding to the latest vehicle information S3 updated in Sp4 to the driver's utterance. For example, a case where the driver utters "Hello" will be described. In this case, if the vehicle speed is 0 km / h, the remaining fuel amount is 10 L to 40 L, and the shift lever is in parking, as shown in FIG. 2, the prompt additional information is set to "parked", "half fuel", and "before starting to drive". As shown in FIG. 6, the microcomputer 4 generates a prompt by adding the prompt additional information "parked", "half fuel", and "before starting to drive" in addition to the utterance of "Hello". In Sp5, the microcomputer 4 may further add prompt additional information such as "daytime" and "200 character limit" that does not correspond to the vehicle information S3.

[0026] On the other hand, if the driver has not spoken (N in Sp5), the microcomputer 4 determines whether or not there has been a change in the vehicle information S3 (Sp9). In Sp9, the microcomputer 4 determines whether or not there has been a change in predetermined vehicle information S3 among the multiple types of vehicle information S3. Specifically, the microcomputer 4 determines whether or not the outside air temperature information (predetermined vehicle information S3) has changed (risen or fall).

[0027] When it is determined that there has been a change in the predetermined vehicle information S3 (Y in Sp9), the microcomputer 4 generates a prompt (Sp10) that includes an instruction sentence (text data) commanding a suggestion for operating the in-vehicle device 11, and the latest prompt additional information updated in Sp4. For example, a case will be described where the outside air temperature has risen from 25°C to 28°C. As shown in FIG. 7, the microcomputer 4 generates a prompt that includes the instruction sentence "Please give us one most effective suggestion for operating the vehicle's devices," as well as the prompt additional information "Drive at 60km / h in city area," "Air conditioner off," and "Outside air temperature 28°C."

[0028] On the other hand, if it is determined that there is no change in the vehicle information S3 (N in Sp9), the microcomputer 4 immediately returns to S1 and collects the vehicle information S3 again.

[0029] Next, the microcomputer 4 transmits the prompt created in Sp8 or Sp10 to the conversational AI 10 (Sp11 in FIG. 5). When the microcomputer 4 receives response information S2 from the conversational AI 10 in response to the transmission of the prompt (Y in Sp12), it converts the received response information S2 into voice and outputs it from the speaker 5, and starts reading out the response information S2 (Sp13). If the microcomputer 4 detects speech during the reading out and performs voice recognition processing, and finds that the result is a request to stop reading out the response information S2 (Y in Sp14), it stops reading out the response information S2 (Sp15) and proceeds to Sp16.

[0030] If there is no utterance requesting the end of the reading of the response information S2 (N in Sp14), the microcomputer 4 judges whether the reading of the response information S2 has been completed to the end (Sp15). If the reading has not been completed to the end (N in Sp15), the microcomputer 4 continues the reading (Sp18) and returns to Sp14. On the other hand, if the reading has been completed to the end (Y in Sp17), the microcomputer 4 proceeds to Sp16.

[0031] In Sp16, if the microcomputer 4 detects that the vehicle dialogue system 1 is off, such as when the ignition is off (Y in Sp16), it ends the process. If the microcomputer 4 does not detect that the vehicle dialogue system 1 is off (N in S16), it returns to Sp1 in FIG. 4 and collects the vehicle information S3 again.

[0032] According to the embodiment described above, the microcomputer 4 periodically collects vehicle information S3 and transmits the collected vehicle information S3 and text data of the voice uttered by the driver to the conversational AI 10. This allows the microcomputer 4 to transmit response information S2 that matches the vehicle information S3 that changes from moment to moment. That is, the conversational AI 10 responds to the driver's utterances in a way that matches the vehicle scene.

[0033] According to the above-mentioned embodiment, the microcomputer 4 adds prompt additional information according to the latest vehicle information S3 to the text data of the driver's utterance, and transmits the added data to the conversational AI 10. This enables the conversational AI 10 to respond to the driver's utterance in a way that is appropriate for the vehicle scene.

[0034] According to the embodiment described above, a data table consisting of vehicle information S3 and prompt additional information (text data) corresponding to the vehicle information is stored in the ROM 7. The microcomputer 4 acquires the prompt additional information based on the data table. This makes it possible to easily acquire the prompt additional information.

[0035] According to the above embodiment, the vehicle information S3 includes at least one of vehicle speed information, on / off information of the ACC function for following the vehicle ahead, on / off information of the headlights, operation information of the in-vehicle devices such as the air conditioner / heater and the navigation device, outside temperature information, remaining fuel level, and shift lever position information. This allows the conversational AI 10 to respond to the driver's utterances in a more appropriate manner to the vehicle scene.

[0036] According to the embodiment described above, the microcomputer 4 inputs the prompt acquisition information to the conversational AI 10 when the collected vehicle information S3 changes. This allows the conversational AI 10 to speak to the driver about the vehicle scene without the driver having to speak.

[0037] According to the above-described embodiment, when the vehicle information S3 changes, the microcomputer 4 adds an instruction sentence for suggesting a vehicle operation to the prompt additional information and transmits the same to the dialogue AI 10. This enables the dialogue AI 10 to suggest a device operation suited to the vehicle scene.

[0038] 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.

[0039] According to the embodiment described above, the microcomputer 4 collects a plurality of types of vehicle information S3 at the same interval, but this is not limited to the above. The microcomputer 4 may change the collection interval depending on the type of vehicle information S3. For example, if vehicle information S3 that changes greatly, such as vehicle speed, is collected at a shorter interval than vehicle information S3 that changes little, such as outside air temperature, the vehicle information S3 can be collected efficiently.

[0040] According to the embodiment described above, the microcomputer 4 adds prompt additional information to an instruction sentence suggesting a device operation and transmits it to the conversational AI 10 when the vehicle information S3 changes, but this is not limited to the above. For example, the microcomputer 4 may input an instruction sentence commanding the conversational AI 10 to notify the driver of the vehicle's status and the prompt additional information when the vehicle information S3 changes.

[0041] For example, let us consider a case where the outside temperature rises from 25° C. to 28° C. As shown in FIG. 8, the microcomputer 4 generates a prompt by adding the prompt additional information "driving at 60 km / h in city area", "air conditioner off", and "outside temperature 28° C." in addition to the instruction sentence "please write a sentence to inform the occupant of the current car situation".

[0042] According to the embodiment described above, the microcomputer 4 collects operation information of the air conditioner / heater and the navigation system as the in-vehicle devices, but the invention is not limited to this. The microcomputer 4 may collect operation information of the in-vehicle devices installed in the vehicle, and may collect operation information of the audio device.

[0043] 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. 9, 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. 9, dialogue can be performed even in a poor communication environment.

[0044] According to the vehicle dialogue systems 1 and 1B shown in Figs. 1 and 9, the microcomputer 4 functions as the voice recognition unit 41, but this is not limited thereto. As in the vehicle dialogue systems 1C and 1D shown in Figs. 10 and 11, the microcomputer 4 may be configured to communicate with a server 12 consisting of a microcomputer functioning as a voice recognition unit. In this case, the microcomputer 4 transmits voice input from the microphone 2 to the server 12. The server 12 converts the received voice into text data and transmits it to the voice dialogue unit 42. This eliminates the need for the microcomputer 4 to have a voice recognition unit 41, and the processing load can be reduced.

[0045] 10 and 11, the microcomputer 4 does not have the voice recognition unit 41, but it 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.

[0046] 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 [8].

[0047] [1] A dialogue system (1, 1B, 1C, 1D) for a vehicle using a dialogue type AI (10, 10B) 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 (41, 12) that converts the voice input by the voice input unit (2) into text data; A collection unit (42) that periodically collects vehicle information (S3); an acquisition unit (42) that acquires text data corresponding to the collected vehicle information (S3); a first input control unit (42) that inputs the text data converted by the voice recognition unit (41, 12) as the input information (S1) to the dialogue AI (10, 10B); a second input control unit (42) that inputs the text data corresponding to the vehicle information (S3) acquired by the acquisition unit (42) as the input information (S1) to the interactive AI (10, 10B); A voice synthesis unit (44) that converts the response information (S2) from the dialogue type AI (10, 10B) into voice; 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).

[0048] According to the vehicle dialogue system (1, 1B, 1C, 1D) having the configuration [1] above, the collection unit (42) periodically collects vehicle information (S3). The first input control unit (42) transmits text data of the voice spoken by the driver to the dialogue type AI (10, 10B), and the second input control unit (42) transmits text data corresponding to the collected vehicle information (S3) to the dialogue type AI (10, 10B). This allows the dialogue type AI (10, 10B) to transmit response information (S2) that matches the vehicle information (S3) that changes from moment to moment. That is, the dialogue type AI (10, 10B) responds to the driver's utterances in a manner that matches the vehicle scene.

[0049] [2] In the vehicle dialogue system (1, 1B, 1C, 1D) according to [1], the second input control unit (42) adds the text data corresponding to the latest vehicle information (S3) acquired by the acquisition unit (42) to the text data converted by the voice recognition unit (41, 12), and inputs the text data to the interactive AI (10, 10B). Dialogue system for vehicles (1, 1B, 1C, 1D).

[0050] According to the vehicle dialogue system (1, 1B, 1C, 1D) configured as described above in [2], the dialogue AI (10, 10B) will respond to the driver's utterances in a way that is appropriate for the vehicle scene.

[0051] [3] In the vehicle dialogue system (1, 1B, 1C, 1D) according to [1], a storage unit (7) for storing a data table including the vehicle information (S3) and the text data corresponding to the vehicle information (S3); The acquisition unit (42) acquires the text data by using the data table. Dialogue system for vehicles (1, 1B, 1C, 1D).

[0052] According to the vehicle dialogue system (1, 1B, 1C, 1D) having the configuration [3] above, text data corresponding to the vehicle information (S3) can be easily acquired.

[0053] [4] In the vehicle dialogue system (1, 1B, 1C, 1D) according to [1], The vehicle information (S3) includes at least one of vehicle speed information, on / off information of an adaptive cruise control function that follows a vehicle ahead, on / off information of headlights, operation information of in-vehicle devices, outside temperature information, remaining fuel amount information, and shift lever position information. Dialogue system for vehicles (1, 1B, 1C, 1D).

[0054] According to the vehicle dialogue system (1, 1B, 1C, 1D) having the configuration described above in [4], the dialogue AI (10, 10B) can respond to the driver's utterances in a manner that is more suited to the vehicle scene.

[0055] [5] In the vehicle dialogue system (1, 1B, 1C, 1D) according to [1], The collection unit (42) changes a collection cycle depending on the type of the vehicle information (S3). Dialogue system for vehicles (1, 1B, 1C, 1D).

[0056] According to the vehicle dialogue system (1, 1B, 1C, 1D) configured as described above in [5], vehicle information (S3) can be collected efficiently.

[0057] [6] In the vehicle dialogue system (1, 1B, 1C, 1D) according to [1], The second input control unit (42) inputs the text data corresponding to the vehicle information (S3) acquired by the acquisition unit (42) to the interactive AI (10, 10B) at a timing when the vehicle information (S3) collected by the collection unit (42) changes. Dialogue system for vehicles (1, 1B, 1C, 1D).

[0058] According to the configuration of [6] above, even if the driver does not speak, the conversational AI (10, 10B) will speak to the driver about content appropriate to the vehicle scene.

[0059] [7] In the vehicle dialogue system (1, 1B, 1C, 1D) described in [6], The second input control unit (42) adds the text data corresponding to the vehicle information (S3) acquired by the acquisition unit (42) to text data commanding a suggestion for device operation at a timing when the vehicle information (S3) changes, and inputs the text data to the interactive AI (10, 10B). Dialogue system for vehicles (1, 1B, 1C, 1D).

[0060] According to the configuration of [7] above, the conversational AI (10, 10B) can suggest equipment operations appropriate for the vehicle scene.

[0061] [8] In the vehicle dialogue system (1, 1B, 1C, 1D) described in [6], The second input control unit (42) adds the text data corresponding to the vehicle information (S3) acquired by the acquisition unit (42) to text data commanding the driver to be notified of the vehicle status, and inputs the text data to the interactive AI (10, 10B). Dialogue system for vehicles (1, 1B, 1C, 1D).

[0062] According to the configuration of [8] above, when the vehicle information changes, the interactive AI (10, 10B) can inform the driver of the vehicle status according to the vehicle information (S3). [Explanation of symbols]

[0063] 1,1B,1C,1D Vehicle dialogue system 2 Microphone (audio input section) 5 Speaker (audio output section) 7 ROM (memory section) 10,10B Conversational AI 12 Server (voice recognition section) 41 Voice Recognition Unit 42 Voice dialogue unit (collection unit, acquisition unit, first input control unit, second input control unit) 44 Voice synthesis section S1 Input information S2 Response Information S3 vehicle information

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; A collection unit that periodically collects vehicle information; an acquisition unit that acquires text data corresponding to the collected vehicle information; A first input control unit that inputs the text data converted by the voice recognition unit as the input information to the interactive AI; A second input control unit that inputs the text data corresponding to the vehicle information acquired by the acquisition unit as the input information to the interactive AI; A voice synthesis unit that converts the response information from the conversational AI into voice; 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, The second input control unit adds the text data corresponding to the latest vehicle information acquired by the acquisition unit to the text data converted by the voice recognition unit, and inputs the text data to the interactive AI. Dialogue system for vehicles.

3. 2. The vehicle dialogue system according to claim 1, a storage unit that stores a data table including the vehicle information and the text data corresponding to the vehicle information; The acquisition unit acquires the text data by using the data table. Dialogue system for vehicles.

4. 2. The vehicle dialogue system according to claim 1, The vehicle information includes at least one of vehicle speed information, on / off information of an adaptive cruise control function for following a vehicle ahead, on / off information of headlights, operation information of in-vehicle devices, outside air temperature information, remaining fuel amount information, and shift lever position information. Dialogue system for vehicles.

5. 2. The vehicle dialogue system according to claim 1, The collection unit changes a collection cycle depending on the type of the vehicle information. Dialogue system for vehicles.

6. 2. The vehicle dialogue system according to claim 1, The second input control unit inputs the text data corresponding to the vehicle information acquired by the acquisition unit to the interactive AI at a timing when the vehicle information collected by the collection unit changes. Dialogue system for vehicles.

7. 7. The vehicle dialogue system according to claim 6, The second input control unit, when the vehicle information changes, adds the text data corresponding to the vehicle information acquired by the acquisition unit to text data commanding a suggestion for operating an in-vehicle device, and inputs the text data to the interactive AI. Dialogue system for vehicles.

8. 7. The vehicle dialogue system according to claim 6, The second input control unit adds the text data corresponding to the vehicle information acquired by the acquisition unit to text data instructing the driver to communicate the vehicle status, and inputs the text data to the interactive AI. Dialogue system for vehicles.

Images