JPH04198575A - Electronic lock device - Google Patents

Abstract

PURPOSE:To make it possible to unlock a door without using hands by providing a microphone and a means to output an unlocking signal when a voice inputted through the microphone is recognized to corresponding with a registered voice. CONSTITUTION:When talks with a microphone 4 with a proper language are made in a state to change a switch 7 over to a broken line side, a voice signal is converted into a digital signal with an A/D feature extraction 6, and a feature part is extracted to register it to a standard pattern memory 8. After that, when the registration to the memory 8 is completed, the switch 7 is changed over to a continuous line side to change it to normal mode from a registration mode. Then, when a restarted person is talked with a registered language, it is compared with a registered voice with a comparison section 10, and when it corresponds, an output is transferred to an electronic lock 3 from the comparison section 10. In addition, an unlocking solenoid 12 is driven to unlock a lock, and a signal is transmitted to a door opening and shutting device 2 to open a door.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to an electronic lock device using voice recognition technology.

[Conventional technology]

Locking devices for entrances and the like are usually unlocked using a key. Furthermore, some electronic locks have a ten-key keyboard placed near the lock so that the lock can be unlocked by inputting a preset code number.

[Problem to be solved by the invention]

However, with a lock that uses a key, there is a risk of losing the key, and with an electronic lock device that uses a code number, if the code is known to someone else, the key no longer functions as a key. Furthermore, in either case, manual operation is always required, so if you are carrying luggage in both hands, you will need to take it down first. Therefore, the present invention aims to provide an electronic lock device that uses voice recognition technology, does not require the use of hands, and is completely crime-proof.

[Means to solve the problem]

To this end, the present invention provides an electronic lock device that unlocks the lock by inputting an unlock signal, which includes a microphone, and when the voice input from the microphone is recognized and matches the registered voice, a two-part unlock signal is provided. A means for outputting the information is provided.

【Example】

Examples of the present invention will be described below. FIG. 1 is a sectional view of a door incorporating an electronic locking device according to one embodiment. 1 is a door, 2 is a door opening/closing device that opens and closes the door 1 in a direction perpendicular to the page of Figure 1, 3 is an electronic lock, 4 is a microphone placed on the outside, and 5 is a human sensor placed on the inside. . FIG. 2 is a circuit block diagram of the door opening/closing system. 6
is an A/I)/feature extraction unit that converts the analog audio signal input from the microphone 4 into a digital signal and extracts the feature points (frequency spectrum, etc.) of the audio. Further, 7 is a changeover switch, 8 is a standard pattern memory for registering in advance the spectrum of voices, words, etc. of one or more people, 9 is an input cover for temporarily registering the spectrum of words, etc. of the input voice at the time of unlocking operation; It is turn memory. Reference numeral 10 denotes a comparison unit that compares the contents of both memories 8.9 and outputs the voice recognition result to the electronic lock 3. This electronic lock 3 has a locking solenoid 11, an unlocking solenoid 12, and a door sensor 13 that detects the opening and closing of the door in addition to the signal from the comparing section 10.
A detection signal from the human sensor 5 is input. Door opening/closing device 2
inputs signals from the door sensor 12, person sensor 5, and electronic lock 3 to open and close the door 1. Now, this door 1 is normally closed, and in this state, the door sensor 13 detects the door 1 and the electronic lock 3 locks it. Here, when a person approaches the door 1 from the inside, the person sensor 5 detects it and sends a detection signal to the electronic lock 3. Therefore, the unlocking solenoid 13 of the electronic lock 3 is driven for a predetermined period of time, and the lock is released. After this unlocking, a door open signal is transmitted from the electronic lock 3 to the door opening/closing device 2, and L/A 1 is opened for a certain period of time and then closed, so that the user can go out from the inside to the outside during that time. When the door 1 closes, it is detected by the door sensor 13, and the locking solenoid 11 of the electronic lock 3 locks the door. On the other hand, when entering from the outside to the inside, speaking the pre-registered words into the microphone 4 will unlock the electronic lock 3.
Door 1 opens for a certain period of time. First, this registration is performed as follows. When you speak your favorite word (for example, "I'm home") into the microphone 4 with the switch 7 set to the dashed line side (registration mode), the audio signal of "I'm home" converted into an electrical signal by the microphone 4 will be A. /D. The signal is converted into a digital signal by the feature extractor 6, and the feature portion of the frequency spectrum is extracted. Then, this characteristic portion (the nature and content of the voice) is registered in the standard pattern memory 8. This registration is performed using the desired words for a plurality of people entering and leaving door 1. As a result, the standard voice patterns of multiple people are registered with different addresses. After the registration in the standard pattern memory 8 is completed as described above, the switch 7 is switched to the solid line side (normal mode). After that, when the pre-registered person speaks the registered words, the audio signal is processed by the A/D/feature extractor 6 and the feature part is returned to the solid line side via the switch 6. Temporarily registered in the input pattern memory 9, this is compared with the voice registered in the standard pattern memory 8 in the comparison section 1.
Compare at 0. This comparison is performed by sequentially reading (searching) internal audio data from the standard pattern memory 8. Then, if there is matching audio data,
A matching output is transmitted from the comparator 10 to the electronic lock 3, and the unlocking solenoid 12 is driven for a certain period of time to release the lock. Then, a signal is sent from the electronic lock 3 to the door opening/closing device 2, and the door 1 is opened for a certain period of time. When the door is closed, the door sensor 13 detects this and sends it to the electronic lock 3, and the locking solenoid 11 locks the door. Note that at this time, the door opening/closing device 2 may close the door 1 after the person sensor 5 detects a person who has entered the inside. Further, the electronic lock 3 may be configured to be able to be locked and unlocked using a normal key.

【Effect of the invention】

As described above, according to the present invention, the door can be unlocked by voice input, so it is possible to unlock the door even if both hands are occupied. Furthermore, since no key is used, there is no risk of losing the key, and since the lock is unlocked in response to only the registered voice characteristics and words, there is an advantage that security is increased from the perspective of crime prevention.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a door 6 equipped with an electronic lock according to an embodiment of the present invention, and FIG. 2 is a block diagram of a door opening/closing system. ■...door, 2...door opening/closing device, 3...electronic lock, 4...microphone, 5...person sensor, 6...-A/
D. Feature extraction section, 7... Switch, 8... Standard pattern memory, 9... Input cover pattern memory, 10
... Comparison section, 11 ... Locking solenoid, 12 ...
Unlock solenoid, 13...door sensor. Agent Patent Attorney Tsune Nagao Mei-ku Nagami

Claims (1)

[Claims] (1) An electronic lock device that unlocks the lock by inputting an unlocking signal, comprising: a microphone; and means for recognizing the voice input from the microphone and outputting the unlocking signal when the voice input from the microphone matches the registered voice; A remote control transmitter characterized by being provided with.