JPS6312015B2 - - Google Patents

Description

[Detailed description of the invention] TECHNICAL FIELD The present invention relates to voice actuated devices for automobiles.

Conventionally, various techniques have been proposed for automatically turning on a headlamp or the like using voice without relying on manual operation. FIG. 1 shows such a conventional voice actuating device for an automobile. To explain this, numeral 1 denotes an input means for converting uttered voice into an electrical signal, which is generally a microphone. 2 compares and calculates the parameters representing the level and spectrum of the audio input signal from the input means 1 with standard parameters stored in advance, detects the similarity of the audio parameters to the standard parameters, and performs specific recognition. This is a speech recognition device that selects a word and outputs a signal corresponding to the recognized word. 3, 4, and 5 are drive devices that are selectively driven based on the output from the recognition device.
4 is a trunk release mechanism that opens the trunk when the voice command input to the input means is "trunk", and 4 is a light that switches the headlamp from normal to high beam when the voice command is "light". It is a switching mechanism, and 5 is a channel selection mechanism that selects a radio station when the voice command word is "channel 2".

However, since such a voice-activated system simply selects and activates the drive device based on the recognition word, the trunk release operation and door lock release are performed that are completely unnecessary while driving, and the headlights, which are mainly used while driving, are activated. There was a problem that the switching was performed while the vehicle was stopped.

The present invention has been made to improve such problems, and includes a voice signal input means for converting voice into an electrical signal, and a voice for selecting a specific recognition word of the voice and outputting a signal corresponding to the voice. A recognition device, a drive mechanism that is selectively driven based on the output thereof, and a drive control means that detects a running state or a driveable state of the vehicle and controls the driving of the drive mechanism accordingly. , for an automobile, wherein the drive device is selectively operated depending on whether the vehicle is running or not, and unnecessary operation of the drive device is prohibited while the vehicle is running or stopped. Provide voice-activated devices.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is a block circuit diagram of the voice actuated device. This differs from Fig. 1 in that the voice recognition device 2, trunk release mechanism 3, and light switching mechanism 4
AND gates 6 and 7 are connected between these two input terminals, and a drive control circuit 9 that processes the signal from the vehicle speed sensor 8 into a waveform and outputs a signal corresponding to the vehicle speed is connected to these other input terminals. .

On the other hand, the drive control circuit 9 described above is as shown in FIG. In the figure, 10 is a frequency-voltage converter (f
-V converter), whose output side is the comparator 11
is connected to one input terminal of the Further, the other input terminal of the comparator 11 is connected to the connection midpoint of the DC voltage dividing resistors 12 and 13.
This voltage division ratio is set in advance so as to obtain a predetermined reference voltage corresponding to, for example, a vehicle speed of 1 m/sec. The output of this comparator 11 is applied to the AND gate 6. Further, the base of a transistor 14 is connected to the output of the comparator 11, and the collector of this is connected to the AND gate 7. Therefore, a voltage that is inverted in phase from the voltage applied to the base is obtained at this collector.

Next, the operation of the above circuit will be described.

First, an electric pulse corresponding to the vehicle speed is obtained magnetically or optically at the vehicle speed sensor 8, and an output voltage at a level corresponding to the frequency of the pulse is obtained at the frequency-voltage converter that receives the electric pulse. This output voltage is determined by the comparator 11 when the vehicle speed is 1 m/sec.
The voltage is compared with the reference voltage to detect whether the vehicle is in a running state. If the voltage at the actual vehicle speed is smaller than the reference voltage, it is determined that the vehicle is at a stop and a "High signal" is sent to the AND gate 6, and a "Low signal" is sent to the AND gate 7. It determines that the vehicle is "running" and sends a "Low signal" to AND gate 6 and a "High signal" to AND gate 7. Thus, when both inputs of the AND gate 6 are "High signals", a signal is output to the trunk release mechanism 3, and the trunk is opened. That is, the trunk opening operation is performed only when the voice recognition device 2 determines to open the trunk by checking a specific recognition word, and when the vehicle is stopped. On the other hand, at this time, the light switching mechanism 4 does not operate, but the channel selection mechanism 5 operates regardless of the vehicle speed, depending on the recognition word confirmed by the voice recognition device.
In the above, the vehicle speed is determined by analog signal processing in the drive control circuit 9, but it is also possible to count vehicle speed pulses in fixed time units and make a digital logical determination.

FIG. 4 shows another embodiment of the drive control circuit 9. In FIG.
In the figure, 15 is an input terminal to which a "High signal" is input when the ignition switch is on;
6 is an input terminal to which a "High signal" is input when the gear is in the drive position. An inverter 17 is connected between the terminal 15 and the AND gate 6, and an AND gate 18 is connected between the terminals 15 and 16 and the AND gate 7 as shown.

According to this, when the ignition switch is on, a "Low signal" is output to the AND gate 6, so the trunk is not opened, and when the ignition switch is off, the trunk can be opened. Become. Further, when the ignition switch is on and the gear is in the drive position, the output of the AND gate 18 becomes a "High signal", and the lighting control of the headlamp can be executed by voice.

FIG. 5 shows another embodiment of the invention. 1a, 1
Microphones b and 1c are individually connected to the voice recognition device 2, and switch circuits 19, 20, and 21 are connected to the lines connecting these and the voice recognition device 2. In addition, the switch circuits 19, 2
0 is connected, for example, to the drive control circuit 9 shown in FIG. 3 and the output of the comparator 11 of the voice recognition device 2, and the switch circuit 21 is similarly connected to the collector of the transistor 14. Furthermore, 22 is a driver side door opening mechanism, which is driven when an "open" command is received from the microphone 1a. Reference numeral 23 denotes a door opening mechanism for the passenger side door, which is activated when a command to "open" is received from the microphone 1b. The switch circuits 19, 20, and 21 are analog switches that send the outputs of the microphones 1a, 1b, and 1c to the voice recognition device 2 only when the drive control circuit 9 outputs a "High signal."

Note that the microphones 1a, 1b, and 1c are respectively attached to the driver's side door, the passenger's side door, and the center part of the steering wheel.

In such a circuit, when the vehicle is stopped, the drive control circuit 9 outputs a "High signal", the switch circuits 19 and 20 operate, and the output signals of the microphones 1a and 1b are input to the voice recognition device 2. Conversely, while the vehicle is running, the supply of the output signal to the voice recognition device is interrupted. On the other hand, when the switch circuit 21 operates, the output signal of the microphone 1c is transmitted to the voice recognition device 2.
is input, and the headlamp lighting can be switched. If such a circuit is used, each separate microphone 1a,
1b and 1c can be used to safely and reliably control each separate operating mechanism.

As explained above, according to the present invention, there is provided a voice input means for converting voice into an electrical signal, a voice recognition device for selecting a specific recognition word of the voice, and outputting a signal corresponding to the recognition word. , a drive mechanism that is selectively driven based on the output thereof, and a drive control means that connects and connects the signal system related to each of the drive mechanisms depending on whether the vehicle is running or stopped. Unnecessary operation of the drive device is prohibited while the vehicle is running or stopped, thereby ensuring safety while driving and avoiding troublesome correction work due to malfunctions. In addition, manual operations such as turning on the headlights while driving can be omitted.
Various effects such as being able to prevent steering errors can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a block circuit diagram of a conventional audio actuated device for an automobile, Fig. 2 is a block circuit diagram of an audio actuated device for an automobile of the present invention, Fig. 3 is a drive control circuit diagram, and Fig. 4 is a block circuit diagram of a conventional automobile audio actuated device. Control Circuit Diagram, FIG. 5 is a block circuit diagram of another voice actuated device for an automobile. 1... Voice input circuit, 2... Voice recognition device,
3, 4, 5, 22, 23... Drive mechanism, 8... Vehicle speed sensor, 9... Drive control circuit.

Claims (1)

[Claims] 1. An audio input circuit that converts audio into electrical signals;
A voice recognition device that receives the electric signal, selects a specific recognition word of the voice, and outputs a signal corresponding to the recognition word, a drive mechanism that is selectively driven based on the output signal, and a vehicle. A voice actuation device for an automobile, comprising drive control means for selectively controlling driving and prohibition of driving of the drive mechanism depending on whether the vehicle is running or stopped.