JPS6048435B2 - Elevator notification device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a notification device that notifies that an elevator car has arrived at its floor.

[Prior art]

Many of the latest notification devices in elevators electronically generate sound as an output sound based on the relationship between the tone color and the volume, and amplify the sound to output it from a speaker.

It is desirable that this volume can be heard reliably by the passengers in the elevator hall, but if the volume is unreasonably high, it will cause discomfort, and if the volume is low, the elevator hall will be noisy. Sometimes I can't hear it. Since this noise is generated at different times even in the same elevator hall, even if the volume is changed using a timer or the like, it is not very effective. [Summary of the Invention] This invention has been made with attention to this point, and is designed to detect the noise in the elevator hall of each floor and automatically adjust the volume of the output sound according to the height of the noise level. The present invention aims to provide a notification device for elevators.

[Embodiments of the invention]

That is, FIG. 1 shows one embodiment of the present invention. Reference numeral 1 is a speaker that also serves as a microphone and is installed in an elevator hall. This speaker 1 converts the electrical signal of the chime sound as the output sound into a sound wave. It was provided to function as a speaker to emit this noise, and as a microphone to catch noise from the elevator hall and convert it into an electrical signal.

Reference numeral 2 denotes a switching device for switching the speaker 1 between chime sound transmission and noise detection.

3 is a noise level detector; 4 is a noise level storage device for storing the noise level detected by this detector 3; the stored contents are changed for the first time by updating.

5 is a chime sound generator that electronically generates chime sound;
6 is a variable amplifier whose gain is automatically adjusted in response to the output 104 of the noise level storage device 4;
As shown in FIG. 2, the gain characteristics are set such that the higher the noise level, the higher the gain characteristic, and the lower the noise level, the lower the gain characteristic.

Reference numeral 7 denotes a chime sound transmission control device, and this chime sound transmission control device 7 outputs a command 107 to the switching device 2, and when the chime sound is not emitted, the speaker 1 is used as a microphone by this switching device 2. When the speaker 1 is connected to the noise level detector 3 and a chime sound is to be produced, the speaker 1 is connected to the variable amplifier 6 by the switching device 2, and the chime sound generator 5 is connected to the speaker 1 by the switching device 2.
This is provided to electronically output a chime sound generation command 108 to the noise level storage device 4, and further output a noise level write prohibition command 109 to the noise level storage device 4.

110 is an elevator control device (not shown).

) is the car arrival signal sent from the car. Since the elevator chime device of the present invention is configured as described above, when the chime sound is not transmitted from the speaker 1, the noise in the elevator hall is converted into an electrical signal by the speaker 1, and the switching device 2 is Thereafter, the noise level is detected by the noise level detector 3 and input into the noise level storage device 4. It goes without saying that the contents of the noise level storage device 4 are always updated when the chime sound is not emitted from the speaker 1. That is, the memory contents of the noise level storage device 4 are updated in accordance with changes in the detected noise level. Next, when a chime sound is to be emitted from the speaker 1, the chime sound transmission control device 7 sends a noise level writing prohibition command 1209 to the noise level storage device 4, and also sends a noise level writing prohibition command 1209 to the switching device 2 to output a chime sound from the speaker 1.
A command 107 for connecting the signal to the variable amplifier 6 is further output to the chime sound generator 5, and a chime sound generation command 108 is output to the chime sound generator 5, respectively.

Then, the chime sound signal 1305 outputted from the chime sound generator 5 is gain-adjusted by the output port 4 of the noise level storage device 4 in the variable amplifier 6, and is amplified by the gain, and the chime sound signal 1305 is output from the speaker 1 to generate noise in the elevator hall. The chime sound is sent out at a volume appropriate for the occasion. According to the embodiment described above, the notification is made from the speakers at a volume that corresponds to the noise level in the hall, so that waiting passengers can clearly understand the content of the notification.

In particular, since the storage device is a normal storage device whose storage contents do not change based on a time constant, but whose storage contents change when updated, when a large number of people gather in the hall after a meeting, the noise level can be reduced. Even if the noise level rises suddenly, it is updated to the current noise level, making it possible to make clear notifications. Further, even if the notification continues for a long time, the stored contents will not be attenuated, so the notification will be sent without changing the volume midway through. Therefore, waiting customers can clearly understand the contents of the report. - [Effects of the Invention] As described above, the present invention provides a notification sound transmission control device in an elevator notification device that operates a notification sound transmission control device when a car arrives at a landing to notify the arrival of the car through a speaker. We installed a variable amplifier that detects the noise in the hall when the board is not operating, stores it in a memory device, and changes the volume of the speaker based on this stored content, so even in noisy halls, waiting passengers can hear the information being announced. In addition, in a quiet hall, the noise will not be unreasonably loud and cause discomfort to waiting passengers.

In particular, since the memory device is a normal memory device and does not have a memory effect by lengthening the time constant, it has a good response to sudden changes in noise level, and the reporting time is Even if the signal continues for a long time, the amplification factor at the time the speaker starts broadcasting is maintained without attenuation, and the content of the broadcast can be clearly conveyed.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a gain characteristic diagram of a variable amplifier.

Claims (1)

[Claims] 1. When a car serving multiple landings arrives at the landing, a notification sound transmission control device is activated to generate a notification sound signal from a notification sound generator, and this notification sound signal is announced to the landings using a speaker. , when the notification sound transmission control device is not operating, the speaker is connected to a noise level detection device to detect noise in the hall, the detected noise is stored in a storage device, and the stored content is A notification device for an elevator, characterized in that the notification sound signal is amplified by a variable amplifier that changes an amplification factor accordingly, and the notification sound signal is notified by the speaker.