Speech controlled wireless elevator system pdf

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The microcontroller is hospitals in our area. The buildings have more numbers of capable of communicating with all input and output floor.

This paper suits for handicap, paralysis people to move modules of elevator. The Bluetooth module is used for the from one floor to another floor by using the elevator. Main wireless connection between the user and controller. A wiper terminal 30 is connected to a wiper terminal 32 and to ground. A terminal a" of the mode switch 24 is connected to: a terminal b", a first terminal of push-button switch 36, a first terminal of a push-button switch 40, and a first input terminal of input drivers A second terminal of the push-button switch 36 is connected to a second terminal of the push-button switch 40 and to a second input terminal of the input drivers A first output terminal of the input drivers 34 is connected to an input terminal 35 of the microprocessor 14 via an optical isolater A second output terminal of the input drivers 34 is connected to an input terminal 37 of the microprocessor 14 via an optical isolator The input drivers 34 provide a clean signal free of contact bounce caused by the mode switch 24 and the push-button switches 36 and 40, to the optical isolators 42 and When the mode switch 24 is in position "a" the secure position the wiper terminal 30 is connected to the terminal a', thereby grounding an input terminal of the optical isolator 25 and energizing the STF relay.

Also, in this position, the wiper terminal 32 is connected to the terminal a", grounding the first input terminal of the input drivers 34 and enabling the microprocessor If the push-button switch 36 or the push-button switch 40 is depressed when the mode switch 24 is in position "a", the second input terminal of the input drivers 34 is temporarily grounded, thereby requesting operation of the microprocessor 14 in the voice recognition mode.

With the mode switch 24 in position "b", the STF relay is not energized and the elevator system 11 is therefore not responsive to the voice-controlled elevator security system 8. Also, the wiper terminal 32 is connected to the terminal b" grounding the first input terminal of the input drivers 34, enabling the microprocessor 14, and readying the control terminal 10 for input of a spoken word.

If the push-button switch 36 or the push-button switch 40 is depressed when the mode switch 24 is in position "b" the second input terminal of the input drivers 34 is temporarily grounded, thereby requesting operation of the microprocessor 14 in the voice recognition mode. In this position the STF relay is not energized, and the microprocessor 14 is disabled since the input terminal 35 thereof is not enabled. Continuing with the description of FIG. A preamplifier 48 is connected to the microphone 46, and when a switch 50 is in a first position the voice recognition module 12 is connected to the preamplifier A preamplifier 52 is connected to a microphone 54, and when the switch 50 is in a second position the voice recognition module 12 is connected to the preamplifier The microphone 54 and the preamplifier 52 are located in the main cabinet 10 and are used for storing template words and testing proper operation of the voice-controlled elevator security system 8.

The microphone 46 and the preamplifier 48 are located in the user terminal 18 for use only in the secure operating mode. An input terminal of an optical isolator 56 is connected to an output terminal 57 of the microprocessor A ground terminal of the optical isolator 56 is connected to the volt power supply return circuit. A ground terminal of the optical isolator 62 is connected to the volt power supply return circuit. A steady glow from the PROMPT lamp 58 indicates that the user is to speak the next word in the sequence of words; a flashing signal from the PROMPT lamp 58 indicates that the user is to repeat the previously spoken word.

This repetition enables the voice-controlled elevator security system 8 to re-evaluate the spoken word to determine whether the user is an authorized user. The optical isolators 56 and 62 isolate the volt power supply circuitry from the microprocessor A voice response unit 64 is connected to an output terminal 65 of the microprocessor A speaker 68 is connected to the voice response unit 64 via an amplifier The amplifier 66 and the speaker 68 are located in the user terminal The voice response unit 64, the amplifier 66, and the speaker 68 are used as an alternative to the PROMPT lamp 58 for prompting the user to recite the words.

The microprocessor 14 produces a signal on the output terminal 65 thereof instructing the voice response unit 64 to provide an electrical signal representative of the prompting word, i. This electrical signal is amplified by the amplifier 66 and transformed to an acoustical signal by the speaker An input terminal of an optical isolator 70 is connected to an output terminal 71 of the microprocessor 14 and a ground terminal of the optical isolator 70 is connected to the volt power supply return circuit.

A first terminal of a tamper alarm lamp 72 is connected to an output terminal of the optical isolator 70; a second terminal of the tamper alarm lamp 72 is connected to the positive volt power supply. The tamper alarm lamp 72 is a tamper lamp which is lit, on command from the microprocessor 14, when the user has exceeded a predetermined number of attempts allowed in the recognition process.

The optical isolator 70 isolates the volt power supply circuitry from the microprocessor An input terminal 73 of the microprocesosr 14 is connected to a power supply 74 for providing dc operating power.

An input terminal of an optical isolator 76 is connected to an output terminal 75 of the microprocessor A ground terminal of the optical isolator 76 is connected to the positive volt power supply return circuit. An output terminal 81 of the microprocessor 14 is connected to an input terminal of an optical isolator The optical isolator 78 has a plurality of output terminals that are connected to an elevator interface unit 82 for controlling operation of the elevator system A ground terminal of the optical isolator 78 is connected to the positive volt power supply return circuit.

The optical isolators 76 and 78 isolate the volt power supply circuitry from the microprocessor The RCW relay, the STF relay, and the floor enable relays, in conjunction with the hall call switches 84 and car call switches 86, control operation of the elevator system 11 in the secure mode. The position of these relays, when the user is identified as an authorized user, causes entry of an up hall call at the lowest landing 17 serviced by the elevator system 11 and enables the car call switches 86 for those floors to which the authorized user is permitted access.

Continuing with FIG. An output terminal of the input driver is connected to an input terminal of an optical isolator An output terminal of the optical isolator is connected to an input terminal of the microprocessor The momentary push-button switch is for use by users suffering from laryngeal indisposition i. The input driver provides a clean signal, free of contact bounce caused by the momentary push-button switch , to the optical isolator In operation, when the mode switch 24 is in the secure mode, a user suffering from laryngeal indisposition i.

This grounds the input terminal of the input driver and requests that the microprocessor 14 operate in the laryngeal indisposition train mode. The operation of the microprocessor 14 and the components associated therewith in this laryngeal indisposition train mode is discussed in conjunction with the flow chart of FIG.

Before discussing the laryngeal indispostion train mode in detail, it would be helpful to summarize operation of the microprocessor When operating in the train and test or secure mode, the microprocessor 14 performs several functions in support of these operational modes. A brief summary of each of these functions follows. The TRAIN function provides means of extracting the charcteristic features from the words and storing them in digitized form in the voice recognition module As the name implies, this function loads the template words of the authorized users into the voice recognition module To accomplish this, the authorized user, with the assistance of the operator, repeats the spoken words in a specified sequence as prompted by messages on the data entry and display terminal The UPDATE function allows the authorized user, again with the assistance of the operator, to permanently modify the template words stored in the voice recognition module This is accomplished on a selective basis without affecting all the template words of the authorized user stored in the voice recognition module The UPLOAD function transfers the template words from the voice recognition module 12 to a random access memory in the microprocessor The SETREJECT function permits adjustment of the comparison criteria used by the voice recognition module 12 to determine whether the user's spoken word matches one of the template words.

The user requests operation of the voice-controlled elevator security system by activating the switch 36 located in the user terminal The microprocessor 14 responds with an optical prompt signal from the PROMPT lamp 58 or a voice prompt signal through the speaker The user then pronounces the first word previously stored in the voice recognition module 12, into the microphone If the spoken word is accepted, the PROMPT lamp 58 is steadily lit, indicating that the user is to recite the next word in the series.

As an alternative, a recognition signal from the speaker 68 may be provided. Upon recognition of the authorized user, the microprocessor 14, through the optical isolator 78, enables the floor relays for which the authorized user has access.

If the prescribed number of attempts at matching the spoken word with a template word has been exceeded, the tamper alarm lamp 72 is activated. View 1 excerpt, cites background. With ever-growing increase in computing power and personal computer popularity, the processors are becoming relatively inexpensive.

This has led to a surge in the affordability of Programmable Logic … Expand. Today in the world of automation everything is getting automated. To make life … Expand. A design of elevator positioning control system model.

View 1 excerpt. There are still plenty of shortcomings in existing construction elevator ,such as low automation ,high cost and no communication equipment between the driver and users. Making use of wireless module … Expand. View 1 excerpt, references methods. In order to improve the teaching quality of PLC,Computer Control and FieldBus course,an elevator monitor control system based on field bus wasis built,which shows a whole control system to students … Expand.

This paper presents the design, development and implementation of a PLC based elevator control system incorporating color sensing features.