WO2023032283A1 - 通報装置、通報方法及び通報プログラム - Google Patents
通報装置、通報方法及び通報プログラム Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/16—Anti-collision systems
Definitions
- the present invention relates to a reporting device, reporting method, and reporting program.
- Patent Document 1 discloses a method and apparatus for monitoring at least one occupant of a vehicle.
- the invention described in US Pat. No. 6,200,402 captures images of a vehicle occupant using at least one image capture device and determines at least one vital sign of the vehicle occupant by analysis of the captured images.
- the reporting device is, for example, a reporting device mounted on a vehicle, provided in the vehicle, and an imaging unit that acquires a planar image of the interior of the vehicle. and a conversion unit that converts the planar image into an audio signal to generate a first audio signal, and a communication unit that is provided in the vehicle and transmits the first audio signal. do.
- a reporting method includes, for example, the steps of capturing a planar image of the interior of a vehicle, and converting the planar image into an audio signal to generate a first audio signal. and transmitting the first audio signal.
- a reporting program converts, for example, a computer into an audio signal a planar image of the vehicle interior captured by an imaging unit provided in the vehicle to generate a first audio signal. and a communication unit that transmits the first audio signal.
- the computer program can be provided by downloading via a network such as the Internet, or can be provided by being recorded on various computer-readable recording media such as a CD-ROM.
- the imaging unit provided in the vehicle acquires a planar image of the interior of the vehicle, converts the planar image into an audio signal, and generates and transmits the first audio signal.
- the image information of the vehicle interior can be transmitted using the existing voice communication system. Therefore, it is not necessary to change the specifications of the communication equipment including the TCU and the communication infrastructure. In addition, even if the passenger cannot make a voice call, the information in the passenger compartment can be grasped.
- An image transmission trigger detection unit that detects an image transmission trigger requesting transmission of the planar image may be provided, and the conversion unit may generate the first audio signal when the image transmission trigger is detected.
- an audio signal generated by converting a planar image can be transmitted only when necessary. Since the first audio signal generated by converting the planar image sounds like noise, it may interfere with the communication, but transmitting the first audio signal only when necessary does not interfere with the communication.
- the image transmission trigger is sound
- the communication unit receives the sound and outputs it to the image transmission trigger detection unit
- the image transmission trigger detection unit transmits the image when the sound is detected.
- a trigger may be detected.
- the external device for example, the center device
- the external device that received the audio signal transmits the first audio signal.
- the timing is easy to understand, and it is easy to create a spectrogram based on the first audio signal.
- a microphone is provided in the vehicle interior, and the image transmission trigger detection unit detects an utterance from the sound acquired by the microphone, and the image transmission trigger is detected when the utterance is not detected for a predetermined time.
- the reporting device can automatically generate and transmit the first voice signal in situations where the occupant cannot make a voice call (such as fainting).
- the transform unit uses the plane image in which real numbers are arranged two-dimensionally as a spectrogram, adds phase information to the spectrogram to generate complex number data in which complex numbers are arranged two-dimensionally, and performs an inverse Fourier transform on the complex number data. may generate the first audio signal. Further, the conversion unit may randomly generate the phase information using random numbers. Thereby, the first audio signal can be generated from the planar image. In addition, by using random numbers, it is possible to appropriately add phase information.
- a time-series data acquisition unit that acquires time-series data
- the conversion unit converts the time-series data into an audio signal to generate a second audio signal
- the communication unit transmits the second audio signal.
- the conversion unit may generate the second audio signal by analog-modulating the time-series data so that the frequency range falls within the audio band. This makes it possible to transmit not only planar images (two-dimensional data) but also time-series data (one-dimensional data) using an existing voice communication system.
- the time-series data acquisition unit is a biometric information acquisition unit that acquires biometric information including at least one of heart rate, respiratory rate, blood pressure, blood sugar level, body temperature, arterial blood oxygen saturation, and the conversion unit is the biometric
- biometric information including at least one of heart rate, respiratory rate, blood pressure, blood sugar level, body temperature, arterial blood oxygen saturation, and the conversion unit is the biometric
- the information may be converted into an audio signal to generate a second audio signal. This makes it possible to transmit not only planar images but also biological information using existing voice communication systems.
- a biological information acquisition unit that acquires biological information including at least one of heart rate, respiratory frequency, blood pressure, blood sugar level, body temperature, and arterial blood oxygen saturation;
- the image transmission trigger may be detected when greater than a second threshold less than or greater than the first threshold.
- the reporting device can automatically generate and transmit the first voice signal in situations where the occupant cannot make a voice call (such as fainting).
- the imaging unit may continuously capture the planar images, and the conversion unit may continuously generate the first audio signal. As a result, the change in the situation inside the vehicle can be more reliably grasped by an external device or the like.
- image information inside the vehicle can be transmitted using an existing voice communication system.
- FIG. 4 is a diagram schematically showing the flow of processing for generating a spectrogram
- 2 is a block diagram schematically showing an example of the hardware configuration of reporting device 1.
- FIG. 2 is a block diagram showing an outline of the functional configuration of the reporting device 1;
- FIG. 4 is a diagram schematically showing processing performed by a first conversion unit 102a;
- FIG. 4 is a diagram schematically showing processing performed by a first conversion unit 102a;
- FIG. 4 is a diagram schematically showing processing performed by a first conversion unit 102a;
- FIG. 4 is a diagram schematically showing processing performed by a first conversion unit 102a;
- FIG. 9 is a flow chart showing the flow of processing in a modified example of the reporting device 1.
- FIG. 2 is a block diagram showing an outline of the functional configuration of the reporting device 2;
- FIG. 4 is a flow chart showing the flow of processing performed by the reporting device 2.
- FIG. 3 is a block diagram showing an outline of the functional configuration of the reporting device 3;
- FIG. 4 is a flow chart showing the flow of processing performed by the reporting device 3.
- the reporting device of the present invention is mounted on a vehicle, and is a device for starting a voice conversation by reporting from the vehicle to a call center.
- the present invention will be described as an example of an emergency call device that automatically reports to a call center when an accident such as deployment of an airbag occurs or when an emergency call button is pressed.
- the notification device is not limited to the emergency notification device.
- FIG. 1 is a diagram schematically showing a vehicle 10 provided with a reporting device 1 according to the first embodiment and a center device 20 provided in a call center.
- the reporting device 1 is connected to the center device 20 wirelessly or via a network (a communication network for mobile phones in this embodiment).
- the notification device 1 mainly includes an imaging unit 11, a microphone 12, a speaker 13, a biological information acquisition unit 14, a processing unit 15 that performs processing such as converting an image into sound, a TCU (telematics control unit) 16, Antennas 18 and 19 are provided.
- the imaging unit 11 , the microphone 12 and the speaker 13 are provided inside the passenger compartment 10 a of the vehicle 10 .
- the imaging unit 11 is, for example, a visible light camera such as an RGB camera that captures a color image, a black-and-white camera, or an infrared camera or a thermography that detects electromagnetic waves in the infrared wavelength region and creates an image. Get P1.
- the biological information acquisition unit 14 is, for example, a heart rate monitor provided on the steering wheel, and acquires the driver's heart rate.
- the biological information acquisition unit 14 is not limited to the heart rate meter, and may acquire biological information including at least one of heart rate, respiratory rate, blood pressure, blood sugar level, body temperature, and arterial blood oxygen saturation.
- the processing unit 15 converts the planar image P1 (two-dimensional data) into an audio signal to generate an audio signal A1.
- the processing unit 15 also converts the biological information (one-dimensional data) acquired by the biological information acquisition unit 14 into an audio signal to generate an audio signal A2. Processing for converting the planar image P1 and the biological information into an audio signal will be described in detail later.
- the TCU 16 controls two-way communication such as telephone calls and ETC (Electronic Toll Collection System).
- the TCU 16 also transmits the audio signals A1 and A2 and the audio signal input from the microphone 12 to the center side device 20 via the antenna 18 .
- processing unit 15 and the TCU 16 may be constructed as a dedicated board mounted on an in-vehicle device provided in the vehicle 10, for example.
- the antenna 18 receives radio waves transmitted from the center device 20 via the mobile phone network, and also transmits radio waves to the center device 20 .
- the antenna 19 receives radio waves transmitted from GNSS (Global Navigation Satellite System).
- GNSS Global Navigation Satellite System
- the center-side device 20 mainly includes a microphone 21 , a speaker 22 , a communication device 23 , a processing section 24 that performs processing such as converting sound into an image, a display section 25 , and an antenna 26 .
- the communication device 23 receives radio waves transmitted from the reporting device 1 via the antenna 26 and the mobile phone network, and also transmits radio waves to the reporting device 1 .
- the communication device 23 is connected to the microphone 21 , the speaker 22 and the processing unit 24 , receives an audio signal from the microphone 21 , and outputs the audio signal to the speaker 22 and the processing unit 24 .
- An audio signal input from the microphone 12 is output to the speaker 22 , and audio signals A ⁇ b>1 and A ⁇ b>2 are output to the processing unit 24 .
- the processing unit 24 generates a spectrogram P2 based on the input audio signal A1, and acquires biological information based on the input audio signal A2.
- the spectrogram P2 is output from the processing section 24 to the display section 25 and displayed on the display section 25 .
- a spectrogram is a two-dimensional graph (time axis, frequency axis) representing the results of temporally continuous frequency analysis.
- Fig. 2 is an example of a spectrogram.
- the upper part of FIG. 2 shows the audio signal x(t), where the horizontal axis represents time and the vertical axis represents amplitude. Note that (t) represents a function of time.
- the lower part of Fig. 2 shows the spectrogram
- the spectrogram display method is not limited to a two-dimensional graph, and may be a three-dimensional graph (waterfall plot).
- FIG. 3 is a diagram schematically showing the flow of processing for generating a spectrogram.
- the audio signal x(t) is multiplied by the window function (see the dotted line in FIG. 3) to cut out a portion of the audio signal x(t).
- the clipped section will be referred to as a frame.
- overlap processing is applied to overlap a portion of the previous frame and a portion of the current frame.
- the two-dimensional array obtained here is hereinafter referred to as STFT data X(m, k).
- the STFT data X(m, k) is a complex number, it is converted to a real number by obtaining the absolute value
- is obtained by obtaining a two-dimensional array of absolute values
- the spectrogram is drawn as a black and white image in FIGS. 2 and 3, the spectrogram may be displayed as a color image. Further, the color density of the spectrogram may be logarithmically converted (dB converted) and displayed.
- FIG. 4 is a block diagram schematically showing an example of the hardware configuration of the reporting device 1.
- the reporting device 1 includes a control device 50 , a communication device 52 and a storage device 54 .
- the control device 50 mainly includes a CPU (Central Processing Unit) 56 and a memory 58 .
- the CPU 56 executes predetermined programs stored in the storage device 54, memory 58, or the like, thereby functioning as various functional units.
- the program may be temporarily or permanently stored (stored) in a removable storage medium such as a semiconductor memory, memory card, optical disk, magneto-optical disk, or magnetic disk.
- the communication device 52 is configured with a communication interface or the like for communicating with an external device.
- the communication device 52 transmits and receives various types of information to and from, for example, the center-side device 20 and the like.
- the storage device 54 is composed of a hard disk or the like.
- the storage device 54 stores various programs and information necessary for execution of processing in the control device 50 and information on processing results.
- FIG. 5 is a block diagram showing an outline of the functional configuration of the reporting device 1.
- the reporting device 1 functionally includes a control unit 100 .
- the control unit 100 includes at least an image transmission trigger detection unit 101, a conversion unit 102, and a communication unit 103 as software resources by an arithmetic device such as a CPU (Central Processing Unit) 56 for executing information processing and a storage device 54. , a speaker amplifier 104 , a position information acquisition unit 105 , and an emergency call initiation unit 106 .
- a CPU Central Processing Unit
- the image transmission trigger detection unit 101 is a functional unit that detects an image transmission trigger that requests image transmission.
- the image transmission trigger is a sound.
- the image transmission trigger is a sound of 440 Hz and 880 Hz successively continuing for 0.5 seconds each.
- the form of the image transmission trigger is not limited to this, and may be, for example, a voice such as "Please send an image.”
- the image transmission trigger is transmitted from the center-side device 20 , received by the communication unit 103 , and output from the communication unit 103 to the image transmission trigger detection unit 101 .
- the image transmission trigger detection unit 101 acquires a sound indicating an image transmission trigger in advance, and compares the acquired sound with the sound output from the communication unit 103 to detect the image transmission trigger. .
- the conversion unit 102 mainly includes a first conversion unit 102a that converts a planar image P1 captured by the imaging unit 11 into an audio signal to generate an audio signal A1, and a first conversion unit 102a that converts the biological information acquired by the biological information acquisition unit 14 into an audio signal. and a second conversion unit 102b for converting into a signal to generate an audio signal A2.
- the first conversion unit 102a uses a plane image P1 in which real numbers are arranged two-dimensionally (which is two-dimensional data) as a spectrogram, adds phase information to the spectrogram, and converts complex numbers into complex number data (STFT data X) in which complex numbers are arranged two-dimensionally. (m, k)) and performs inverse Fourier transform on the complex data to generate an audio signal A1.
- FIG. 6 and 7 are diagrams schematically showing the processing performed by the first conversion unit 102a.
- the first transforming unit 102a adds phase information to the plane image P1 to convert it into a complex number to generate STFT data X(m, k), and performs an inverse short-time Fourier transform. Transforms (iSTFT, inverse STFT) are performed, and the speech signal x(t) is generated by splicing them.
- the inverse short-time Fourier transform is an inverse transform of the short-time Fourier transform.
- k can be converted to each other.
- phase information is randomly generated using random numbers as shown in Equation 1 below.
- FIG. 8(A) is an example of a plane image P1
- FIG. 8(B) is an example of an audio signal A1 and a spectrogram
- the upper part of FIG. 8B is the audio signal A1
- the lower part of FIG. 8B is the spectrogram
- clearly illustrates the outline of the planar image P1, and viewing the spectrogram
- the second conversion unit 102b is a functional unit that converts biological information, which is a time-series signal (one-dimensional data) in which real numbers are arranged in time series, into an audio signal to generate an audio signal A2.
- the audio signal A2 can be generated by analog modulation such as FM modulation, AM modulation, and PM modulation.
- analog modulation such as FM modulation, AM modulation, and PM modulation.
- the generation of the audio signal A2 is not limited to analog modulation.
- biological information may be digitized into binary data, and the audio signal A2 may be generated by digital modulation such as QAM (Quadrature Amplitude Modulation).
- QAM Quadrature Amplitude Modulation
- the communication unit 103 is a functional unit that transmits and receives signals via the antennas 18 and 19. After the conversion unit 102 generates the audio signals A1 and A2, the communication unit 103 transmits the audio signals A1 and A2. Also, the communication unit 103 transmits an audio signal input from the microphone 12 .
- the communication unit 103 receives the voice transmitted from the center-side device 20 .
- the communication unit 103 outputs the received sound to the image transmission trigger detection unit 101 and the speaker amplifier 104 .
- the communication unit 103 receives radio waves transmitted from the GNSS 30 via the antenna 19 and outputs the radio waves to the position information acquisition unit 105 .
- the speaker amplifier 104 is a functional unit that amplifies the signal output from the communication unit 103 and outputs it to the speaker 13 .
- the location information acquisition unit 105 is a functional unit that acquires radio waves transmitted from the GNSS 30 via the communication unit 103 and acquires location information based on the acquired radio waves. Since the speaker amplifier 104 and the position information acquisition unit 105 are already known, the description thereof will be omitted.
- the emergency call start unit 106 is a functional unit that starts an emergency call when an emergency call start trigger is input.
- the emergency call start trigger is input from an in-vehicle device (not shown) or the like.
- the emergency call start unit 106 is connected to the image transmission trigger detection unit 101, the communication unit 103, the speaker amplifier 104, and the position information acquisition unit 105, and when an emergency call start trigger is input, these function units are notified of the emergency call start. Output instructions.
- FIG. 4 merely shows a part of the main hardware configuration of the reporting device 1, and the reporting device 1 can be provided with other configurations generally included in server devices.
- the reporting device 1 can be implemented using an information processing device such as a dedicated or general-purpose server computer. Further, the reporting device 1 may be composed of a single information processing device, or may be composed of a plurality of information processing devices distributed over a communication network. Further, the functional components of the reporting device 1 shown in FIG. 5 may be classified into more components according to the processing contents, or one component may execute the processing of a plurality of components. .
- FIG. 9 is a flow chart showing the flow of processing performed by the reporting device 1.
- the emergency call start unit 106 outputs an emergency call start instruction to the image transmission trigger detection unit 101, the communication unit 103, the speaker amplifier 104, and the position information acquisition unit 105. Then, an emergency call is started (step SP11).
- the communication unit 103 receives voice and the like from the center device 20 via the antenna 18 based on the emergency call start instruction, and outputs the voice and the like to the speaker amplifier 104 . As a result, the sound output from the center-side device 20 is output from the speaker 13 . In addition, the communication unit 103 outputs the voice (emergency call voice) input from the microphone 12 to the center device 20 via the antenna 18 based on the emergency call start instruction. This makes it possible for the center-side device 20 to hear the emergency call voice. Further, when an emergency call start instruction is input, the image transmission trigger detection unit 101 waits for input of an image transmission trigger. These processes are continuously performed while an emergency call is made.
- the location information acquisition unit 105 receives radio waves from the GNSS 30 via the antenna 19 and outputs them to the location information acquisition unit 105 based on the emergency call start instruction.
- Position information acquisition section 105 obtains position information and outputs it to communication section 103 .
- the communication unit 103 outputs the position information to the center device 20 via the antenna 18 . Note that the location information acquisition unit 105 and transmission of location information are not essential.
- the image transmission trigger detection unit 101 determines whether or not an image transmission trigger has been input via the communication unit 103 (step SP13).
- step SP13 If the image transmission trigger has not been input (NO in step SP13), the image transmission trigger detection unit 101 repeats the processing of step SP13. If an image transmission trigger has been input (YES in step SP13), the image transmission trigger detection unit 101 outputs to the conversion unit 102 that an image transmission trigger has been input, and the first conversion unit 102a receives a signal from the imaging unit 11. A planar image P1 is acquired (step SP15).
- the first conversion unit 102a converts the planar image P1 acquired in step SP13 into audio to generate an audio signal A1 (step SP17).
- the first conversion unit 102 a outputs the generated audio signal A ⁇ b>1 to the communication unit 103 .
- the communication unit 103 superimposes the voice signal A1 on the emergency call voice and transmits it (step SP19).
- the emergency call initiation unit 106 terminates a series of processes. Further, when an emergency call start trigger is input from an in-vehicle device or the like while the process shown in FIG. 9 is being performed, the emergency call start unit 106 ends the process shown in FIG.
- the center-side device 20 receives the voice signal A1 transmitted from the reporting device 1 after this. As shown in FIG. 1, the processing unit 24 generates a spectrogram P2 based on the input audio signal A1. As a result, the spectrogram P2 is displayed on the display unit 25 of the center-side device 20, so that the call center can confirm the state inside the passenger compartment 10a.
- the second conversion unit 102b acquires biometric information from the biometric information acquisition unit 14 at the same time as step SP13, and performs the second conversion at the same time as step SP17.
- the unit 102b may convert the biological information into voice to generate the voice signal A2, and the communication unit 103 may superimpose the voice signal A2 on the emergency call voice and transmit it at the same time as step SP19.
- the planar image P1 captured by the image capturing unit 11 is converted into an audio signal to generate the audio signal A1, and when the audio signal A1 is generated, the audio signal A1 is transmitted.
- a voice communication system can be used to transmit image information of the interior of the vehicle. Therefore, it is unnecessary to change the specifications of the communication equipment including the TCU 16 and the communication infrastructure. Since the TCU 16 relays a report voice and does not have an image transmission function, in order to transmit an image via the TCU 16, an interface with the imaging unit 11 and firmware for image transmission must be provided. However, it is time-consuming and costly.
- the TCU 16 does not need to be changed, which saves labor and cost, and the TCU 16 having no image transmission function is installed. It is possible to add an image communication function to the vehicle after the fact.
- the information in the vehicle interior 10a can be grasped even when the passenger cannot make a voice call.
- the first conversion unit 102a converts the plane image P1 into voice and converts it into the voice signal A1. so that the audio signal A1 can be sent only when it is needed. If the audio signal A1 is always transmitted, the audio signal A1 sounds like noise, which may interfere with communication. In contrast, by transmitting the audio signal A1 using the image transmission trigger as a trigger as in the present embodiment, the audio signal A1 can be transmitted as needed without interfering with the call.
- the timing at which the audio signal A1 was transmitted from the center device 20 can be easily understood. It is easy to create a spectrogram based on signal A1.
- the image transmission trigger can be superimposed on the call voice. Therefore, the image transmission trigger can be sent from the center device 20 without changing the specifications of the TCU 16 .
- the planar image P1 can be obtained using an existing audio communication system. Not only that, but also biometric information can be transmitted.
- the reporting device 1 includes the microphone 12, the speaker 13 and the speaker amplifier 104 in order to make two-way calls with the center device 20.
- the microphone 12, the speaker 13 and the speaker Amplifier 104 is not essential.
- the notification device 1 may include at least the image transmission trigger detection section 101, the conversion section 102, and the communication section 103. FIG.
- the image transmission trigger detection unit 101 it is not essential for the image transmission trigger detection unit 101, that is, to generate and transmit the audio signal A1 based on the image transmission trigger.
- the voice signal A1 may be generated and transmitted when the reporting device 1 starts reporting.
- the biometric information acquired by the biometric information acquisition unit 14 is converted into the audio signal A2 by the second conversion unit 102b and transmitted from the communication unit 103, but the biometric information acquisition unit 14 and the second conversion Part 102b is not essential.
- the reporting device 1 may acquire biometric information via the communication unit 103 from a device other than the biometric information acquisition unit 14, such as a wearable device.
- the reporting device 1 converts the biometric information acquired by the biometric information acquisition unit 14 into the audio signal A2 and transmits it from the communication unit 103.
- the communication device includes at least one of a temperature sensor, a humidity sensor, and an air pressure sensor, acquires temperature data, humidity data, and air pressure data, which are time series data, from the temperature sensor, the humidity sensor, and the air pressure sensor, respectively.
- the conversion unit 102 b may convert the audio signal into an audio signal, and the audio signal may be transmitted from the communication unit 103 .
- the communication device includes a gas sensor (for example, a CO 2 sensor), acquires substance concentration data (for example, carbon dioxide concentration data) as time-series data from the gas sensor, and converts it into an audio signal by the second conversion unit 102b. and the audio signal may be transmitted from the communication unit 103 .
- a gas sensor for example, a CO 2 sensor
- substance concentration data for example, carbon dioxide concentration data
- the audio signal may be transmitted from the communication unit 103 .
- Time-series data such as temperature data, humidity data, atmospheric pressure data, and substance concentration data can also be converted into audio signals in the same manner as biological information.
- step SP15 the communication unit 103 superimposes the voice signal A1 on the emergency call voice and transmits it, but the communication unit 103 may transmit only the voice signal A1.
- FIG. 10 is a flow chart showing the flow of processing in the modified example of the notification device 1. As shown in FIG. Since steps SP11 to SP19 are the same, their description is omitted.
- the image transmission trigger detection unit 101 determines via the communication unit 103 whether the emergency call has ended or a transmission end trigger has been input. Determine (step SP21). For example, in the image transmission trigger detection unit 101, a signal instructing the termination of the emergency call is output from an in-vehicle device or the like, is input to the emergency call start unit 106, and is input from the emergency call start unit 106 to the image transmission trigger detection unit 101. It is assumed that the emergency call is terminated at this time. Further, for example, when a transmission end trigger is transmitted from the center-side device 20 and input to the image transmission trigger detection unit 101 via the communication unit 103, the image transmission trigger detection unit 101 receives the transmission end trigger.
- the image transmission trigger detection unit 101 acquires in advance a sound indicating a transmission end trigger, and compares the pre-acquired sound with the sound output from the communication unit 103 to detect the transmission end trigger.
- a sound of 440 Hz and 880 Hz successively continuing for one second each can be used as a transmission end trigger, but the form of the transmission end trigger is not limited to this.
- the image transmission trigger detection unit 101 returns the process to step SP15. That is, until the transmission end trigger is input, the first conversion unit 102a acquires the plane image P1 (step SP15), converts the plane image P1 into voice to generate the voice signal A1 (step SP17), and the communication unit 103 continuously performs the process of superimposing the voice signal A1 on the emergency call voice and transmitting it (step SP19).
- the emergency call initiation unit 106 ends a series of processes. Further, when an emergency call start trigger is input from an in-vehicle device or the like while the process shown in FIG. 10 is being performed, the emergency call start unit 106 ends the process shown in FIG.
- the center-side device 20 can more reliably grasp the change in the situation inside the vehicle compartment 10a.
- the first conversion unit 102a converts the planar image P1 into Although the voice signal A1 is generated by voicing and the communication unit 103 superimposes the voice signal A1 on the emergency call voice and transmits it, the trigger for generating the voice signal A1 from the plane image P1 is not limited to this.
- the second embodiment of the present invention is a mode in which the sound signal A1 is generated from the planar image P1 by using the fact that no human speech is detected in the vehicle compartment 10a as a trigger.
- a notification device 2 according to a second embodiment of the present invention will be described below. The same reference numerals are assigned to the same parts as in the first embodiment, and the description thereof is omitted.
- FIG. 11 is a block diagram showing an outline of the functional configuration of the reporting device 2.
- the reporting device 2 includes a control device 50, a communication device 52, and a storage device 54 as a hardware configuration. Further, the reporting device 2 functionally includes a control section 100A.
- the control unit 100A has at least an image transmission trigger detection unit 101A, a conversion unit 102, and a communication unit 103 as software resources by an arithmetic device such as a CPU (Central Processing Unit) 56 for executing information processing and a storage device 54. , a speaker amplifier 104 , a position information acquisition unit 105 , and an emergency call initiation unit 106 .
- an arithmetic device such as a CPU (Central Processing Unit) 56 for executing information processing and a storage device 54.
- a speaker amplifier 104 for executing information processing and a storage device 54.
- a position information acquisition unit 105 for executing information processing
- an emergency call initiation unit 106 for executing information processing and a storage device 54.
- the image transmission trigger detection unit 101A is a functional unit that detects an image transmission trigger that requests image transmission.
- a sound acquired by the microphone 12 is input to the image transmission trigger detection unit 101A.
- the image transmission trigger detection unit 101A detects an utterance from the sound acquired by the microphone 12, and assumes that the image transmission trigger is detected when the utterance is not detected for a predetermined time.
- the predetermined time is, for example, 10 seconds, and can be set to any time.
- the reporting device 2 indicates that the occupant is in a situation where voice communication is not possible (fainting, death, etc.) and that it is time to transmit an image of the interior of the vehicle compartment 10a.
- the notification device 2 side can automatically determine.
- the image transmission trigger detection unit 101A determines that there is speech when the sound pressure level obtained by the microphone 12 exceeds a threshold, and determines that there is no speech if it does not exceed the threshold.
- FIG. 12 is a flowchart showing the flow of processing performed by the reporting device 2.
- the emergency call start unit 106 outputs an emergency call start instruction to the image transmission trigger detection unit 101A, the communication unit 103, the speaker amplifier 104, and the position information acquisition unit 105. Notification is started (step SP11).
- the image transmission trigger detection unit 101A detects speech from the sound acquired by the microphone 12, and determines whether speech has been detected for a predetermined time (step SP12).
- step SP12 When speech is detected (YES in step SP12), the image transmission trigger detection unit 101A repeats the process of step SP12. If no speech is detected for a predetermined time (NO in step SP12), the image transmission trigger detection unit 101A outputs to the conversion unit 102 that an image transmission trigger has been input, and the first conversion unit 102a detects the image pickup unit 11. acquires a planar image P1 from (step SP15).
- the first conversion unit 102a converts the planar image P1 acquired in step SP13 into audio to generate an audio signal A1 (step SP17).
- the first conversion unit 102 a outputs the generated audio signal A ⁇ b>1 to the communication unit 103 .
- the communication unit 103 superimposes the voice signal A1 on the emergency call voice and transmits it (step SP19).
- the emergency call initiation unit 106 ends the series of processes. Further, when an emergency call start trigger is input from an in-vehicle device or the like while the process shown in FIG. 12 is being performed, the emergency call start unit 106 ends the process shown in FIG.
- speech is detected from the sound acquired by the microphone 12, and the speech signal A1 is generated when speech is not detected for a predetermined time.
- the notification device 2 can automatically generate and transmit the audio signal A1.
- the sound signal A1 is generated from the planar image P1 by using the fact that no human speech is detected in the vehicle interior 10a as a trigger.
- the trigger is not limited to this.
- the third embodiment of the present invention is a mode in which an audio signal A1 is generated from a planar image P1 using the occurrence of an abnormality in biological information as a trigger.
- the reporting device 3 according to the third embodiment of the present invention will be described below.
- the same reference numerals are assigned to the same parts as in the first embodiment, and the description thereof is omitted.
- FIG. 13 is a block diagram showing an outline of the functional configuration of the reporting device 3.
- the reporting device 3 includes a control device 50, a communication device 52, and a storage device 54 as a hardware configuration. Further, the reporting device 3 functionally includes a control section 100B.
- the control unit 100B includes at least an image transmission trigger detection unit 101B, a conversion unit 102, and a communication unit 103 as software resources by an arithmetic device such as a CPU (Central Processing Unit) 56 for executing information processing and a storage device 54. , a speaker amplifier 104 , a position information acquisition unit 105 , and an emergency call initiation unit 106 .
- an arithmetic device such as a CPU (Central Processing Unit) 56 for executing information processing and a storage device 54.
- a speaker amplifier 104 for executing information processing and a storage device 54.
- a position information acquisition unit 105 for executing information processing
- an emergency call initiation unit 106 includes at least an emergency call initiation unit 106 .
- the image transmission trigger detection unit 101B is a functional unit that detects an image transmission trigger that requests image transmission.
- the biometric information acquired by the biometric information acquisition unit 14 is input to the image transmission trigger detection unit 101B.
- the biological information acquisition unit 14 is a heart rate monitor, and the image transmission trigger detection unit 101B continuously acquires the heart rate.
- the image transmission trigger detection unit 101B compares the biometric information with the first threshold and the second threshold, and assumes that the image transmission trigger is detected when the biometric information is smaller than the first threshold or larger than the second threshold. .
- the second threshold is greater than the first threshold. For example, assume that the image transmission trigger detection unit 101B detects an image transmission trigger when the heart rate is less than 50 (first threshold) or when the heart rate is greater than 120 (second threshold).
- the notification device 3 when the heart rate is smaller than the first threshold or larger than the second threshold, it means that the occupant cannot make a voice call (fainting, death, etc.), and the image inside the vehicle compartment 10a is displayed.
- the notification device 3 side can automatically determine that it is time to transmit.
- FIG. 14 is a flowchart showing the flow of processing performed by the reporting device 3.
- the emergency call start unit 106 outputs an emergency call start instruction to the image transmission trigger detection unit 101B, the communication unit 103, the speaker amplifier 104, and the position information acquisition unit 105. Notification is started (step SP11).
- the image transmission trigger detection unit 101B acquires the biometric information from the biometric information acquisition unit 14, and determines whether or not there is an abnormality in the biometric information, that is, whether the biometric information is smaller than the first threshold or larger than the second threshold. (step SP14).
- the image transmission trigger detection unit 101B repeats the process of step SP14. If the biometric information is smaller than the first threshold or larger than the second threshold (YES in step SP14), the image transmission trigger detection unit 101B outputs that the image transmission trigger is input to the conversion unit 102, and the first conversion is performed.
- the unit 102a acquires the planar image P1 from the imaging unit 11 (step SP15).
- the first conversion unit 102a converts the planar image P1 acquired in step SP13 into audio to generate an audio signal A1 (step SP17).
- the first conversion unit 102 a outputs the generated audio signal A ⁇ b>1 to the communication unit 103 .
- the communication unit 103 superimposes the voice signal A1 on the emergency call voice and transmits it (step SP19).
- the emergency call initiation unit 106 ends the series of processes. Further, when an emergency call start trigger is input from an in-vehicle device or the like while the process shown in FIG. 14 is being performed, the emergency call start unit 106 ends the process shown in FIG.
- the voice signal A1 is generated when the biological information is smaller than the first threshold or larger than the second threshold.
- the audio signal A1 can be generated and transmitted automatically.
- the biometric information acquisition unit 14 is a heart rate monitor, and the image transmission trigger is detected when the biometric information falls below the threshold value.
- the biometric information acquisition unit 14 is not limited to a heart rate monitor.
- the biological information acquisition unit 14 may be a non-contact vital sensor that measures respiratory rate and pulse, a wearable device that measures heart rate, arterial blood oxygen saturation (SpO 2 ), body temperature, etc., and may measure blood pressure.
- a sphygmomanometer for example, a watch-type wearable sphygmomanometer
- the image transmission trigger detection unit 101B detects an image transmission trigger when, for example, the respiratory rate, arterial blood oxygen saturation, body temperature, blood pressure, etc. are smaller than the first threshold or larger than the second threshold, according to the acquired biological information. may be detected.
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Abstract
Description
なお、コンピュータプログラムは、インターネット等のネットワークを介したダウンロードによって提供したり、CD-ROMなどのコンピュータ読取可能な各種の記録媒体に記録して提供したりすることができる。
図1は、第1の実施の形態に係る通報装置1が設けられた車両10及びコールセンターに設けられたセンタ側装置20を模式的に示す図である。通報装置1は、センタ側装置20と無線又はネットワーク(本実施の形態では、携帯電話用の通信ネットワーク)により接続されている。通報装置1は、主として、撮像部11と、マイクロホン12と、スピーカ13と、生体情報取得部14と、画像を音声化する処理等を行う処理部15と、TCU(テレマティクス制御ユニット)16と、アンテナ18、19とを備える。
本発明の第1の実施の形態は、センタ側装置20から送信された画像送信トリガが通信部103を介して画像送信トリガ検出部101に入力されたら、第1変換部102aが平面画像P1を音声化して音声信号A1を生成し、通信部103が音声信号A1を緊急通報音声に重畳して送信したが、平面画像P1から音声信号A1を生成するためのトリガはこれに限られない。
本発明の第2の実施の形態は、車室10a内で人による発話が検知されないことをトリガとして平面画像P1から音声信号A1を生成したが、平面画像P1から音声信号A1を生成するためのトリガはこれに限られない。
10 :車両
10a :車室
11 :撮像部
12 :マイクロホン
13 :スピーカ
14 :生体情報取得部
15 :処理部
18、19:アンテナ
20 :センタ側装置
21 :マイクロホン
22 :スピーカ
23 :通信装置
24 :処理部
25 :表示部
26 :アンテナ
50 :制御装置
52 :通信装置
54 :記憶装置
56 :CPU
58 :メモリ
100、100A、100B:制御部
101、101A、101B:画像送信トリガ検出部
102 :変換部
102a :第1変換部
102b :第2変換部
103 :通信部
104 :スピーカアンプ
105 :位置情報取得部
106 :緊急通報開始部
Claims (13)
- 車両に搭載される通報装置であって、
前記車両に設けられており、前記車両の車室内の平面画像を取得する撮像部と、
前記平面画像を音声信号に変換して第1音声信号を生成する変換部と、
前記車両に設けられており、前記第1音声信号を送信する通信部と、
を備えたことを特徴とする通報装置。 - 前記平面画像の送信を要求する画像送信トリガを検出する画像送信トリガ検出部を備え、
前記変換部は、前記画像送信トリガが検出されたら前記第1音声信号を生成する
ことを特徴とする請求項1に記載の通報装置。 - 前記画像送信トリガは、音であり、
前記通信部は、前記音を受信して前記画像送信トリガ検出部に出力し、
前記画像送信トリガ検出部は、前記音が検出されたときに前記画像送信トリガを検出したとする
ことを特徴とする請求項2に記載の通報装置。 - 前記車室内に設けられたマイクロホンを備え、
前記画像送信トリガ検出部は、前記マイクロホンにより取得された音声から発話を検知し、所定時間発話が検知されなかった場合に前記画像送信トリガが検出されたとする
ことを特徴とする請求項2又は3に記載の通報装置。 - 前記変換部は、実数が2次元配列された前記平面画像をスペクトログラムとし、当該スペクトログラムに位相情報を付加して複素数が2次元配列された複素数データを生成し、当該複素数データを逆フーリエ変換することにより前記第1音声信号を生成する
ことを特徴とする請求項1から4のいずれか一項に記載の通報装置。 - 前記変換部は、前記位相情報を乱数を用いてランダムに生成する
ことを特徴とする請求項5に記載の通報装置。 - 時系列データを取得する時系列データ取得部を備え、
前記変換部は、前記時系列データを音声信号に変換して第2音声信号を生成し、
前記通信部は、前記第2音声信号を送信する
ことを特徴とする請求項1から6のいずれか一項に記載の通報装置。 - 前記変換部は、周波数範囲が音声帯域に収まるように前記時系列データをアナログ変調して前記第2音声信号を生成する
ことを特徴とする請求項7に記載の通報装置。 - 前記時系列データ取得部は、心拍数、呼吸回数、血圧、血糖値、体温、動脈血酸素飽和度の少なくとも1つを含む生体情報を取得する生体情報取得部であり、
前記変換部は、前記生体情報を音声信号に変換して前記第2音声信号を生成する
ことを特徴とする請求項7又は8に記載の通報装置。 - 心拍数、呼吸回数、血圧、血糖値、体温、動脈血酸素飽和度の少なくとも1つを含む生体情報を取得する生体情報取得部を備え、
前記画像送信トリガ検出部は、前記生体情報が第1閾値より小さい又は前記第1閾値より大きい第2閾値より大きいときに前記画像送信トリガが検出されたとする
ことを特徴とする請求項2から4のいずれか一項に記載の通報装置。 - 前記撮像部は、前記平面画像を連続して撮像し、
前記変換部は、前記第1音声信号を連続して生成する
ことを特徴とする請求項1から10のいずれか一項に記載の通報装置。 - 車両の車室内の平面画像を撮像するステップと、
前記平面画像を音声信号に変換して第1音声信号を生成するステップと、
前記第1音声信号を送信するステップと、
を含むことを特徴とする通報方法。 - コンピュータを、
車両に設けられた撮像部により撮像された車室内の平面画像を音声信号に変換して第1音声信号を生成する変換部、
前記第1音声信号を送信する通信部、
として機能させることを特徴とする通報プログラム。
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WO2005114576A1 (ja) * | 2004-05-21 | 2005-12-01 | Asahi Kasei Kabushiki Kaisha | 動作内容判定装置 |
JP2014101967A (ja) | 2012-11-21 | 2014-06-05 | Sumitomo Heavy Ind Ltd | 車輪駆動装置 |
JP2017228280A (ja) * | 2016-06-21 | 2017-12-28 | 株式会社デンソー | 覚醒維持装置 |
JP2018206197A (ja) * | 2017-06-07 | 2018-12-27 | トヨタ自動車株式会社 | 覚醒支援装置および覚醒支援方法 |
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WO2005114576A1 (ja) * | 2004-05-21 | 2005-12-01 | Asahi Kasei Kabushiki Kaisha | 動作内容判定装置 |
JP2014101967A (ja) | 2012-11-21 | 2014-06-05 | Sumitomo Heavy Ind Ltd | 車輪駆動装置 |
JP2017228280A (ja) * | 2016-06-21 | 2017-12-28 | 株式会社デンソー | 覚醒維持装置 |
JP2018206197A (ja) * | 2017-06-07 | 2018-12-27 | トヨタ自動車株式会社 | 覚醒支援装置および覚醒支援方法 |
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