JP5390559B2 - Elevator silencer - Google Patents

Description

  The present invention relates to an elevator muffler for reducing noise generated in a car.

  As one of the prior arts of this type, at least one noise detecting means for detecting noise by forming a car frame into an outer shell shape that covers the car and providing a silencing space between the car and the car frame; Sound insulation of an elevator car comprising at least one sound generating means for generating sound that silences noise, and control means for converting a detection signal of each noise detecting means into a control signal and outputting the control signal to each sound generating means An apparatus is known (see, for example, Patent Document 1).

  Further, as another example of the prior art of such an elevator silencer, a detecting means for detecting a noise signal or a signal having a high correlation with the noise signal in the car, and a signal detected by the detecting means are processed. Processing means, sound generating means for outputting an additional sound for muting the noise in the car, and sound receiving means for receiving a sound synthesized by the noise and the additional sound. As a means, an elevator with a silencer provided at a connection portion between a ceiling or a floor surface and a side surface of a car is known (see, for example, Patent Document 2).

JP-A-5-78065 JP-A-5-310389

  In the conventional elevator car sound insulation device disclosed in Patent Document 1 described above, noise detecting means for detecting noise is provided in a sound deadening space formed between the car and the car frame. The sound transmitted from the car or the car frame is detected, and the sound inside the car is not directly detected. For this reason, the noise detection means described above has low sensitivity to noise generated in the car, and there is a concern that the noise generated in the car cannot be sufficiently silenced by the sound generated from the sound generation means. Yes. Therefore, there is a risk of discomfort to passengers waiting in the car due to noise.

  The prior art elevator with silencer disclosed in Patent Document 2 receives additional sound that reduces noise generated in the car and noise output from the sounding means by the sound receiving means, and detects them. As described above, the sound generating means and the sound receiving means are connected to the ceiling or floor surface and the side surface of the car. Therefore, the installation work of these sound generating means and sound receiving means is complicated. In particular, when a device for detecting the position of the car is installed at the junction between the ceiling or the floor and the side surface of the existing car, it is necessary to attach the sounding means and the sound receiving means to the car. Modification work such as changing the structure is required, and the problem is that the versatility is low.

  The present invention has been made in view of such a state of the art, and an object of the present invention is to provide an elevator muffler that can be easily applied to a car while sufficiently reducing noise generated in the car. It is to provide.

  In order to achieve the above object, an elevator silencer according to the present invention includes a car that travels in a hoistway, an interphone that is provided in the car, inputs and outputs sound, and is connected to the interphone. In the silencer for an elevator, which is provided in an elevator including a monitoring device that receives a sound input by an intercom and transmits a sound to be output to the intercom. An apparatus includes: a noise detecting unit that detects noise generated in the car from the sound input by the interphone; and a phase inverting unit that generates a sound having a phase opposite to the noise detected by the noise detecting unit. And an anti-phase sound output for transmitting the anti-phase sound generated by the phase inverting means to the interphone for output. It is characterized by a means.

  In the present invention configured as described above, when noise is generated in the car, the noise detection means of the monitoring device detects the noise from the interphone provided in the car, and the phase inversion means detects the noise. Produces an antiphase sound. Then, the anti-phase sound output means of the monitoring device transmits the anti-phase sound generated by the phase inversion means to the car interphone and outputs it, so that the anti-phase sound is superimposed on the noise in the car. Since they can be matched, noise generated in the car can be effectively reduced. In addition, an interphone is already installed in the car, and it can generate noise in the car because it can receive noise from the interphone and transmit sound in the opposite phase to the noise to each part of the car. There is no need to modify the car to mute the noise that is generated. In this way, by using the communication function of the intercom already installed in the car, noise generated in the car can be sufficiently reduced and can be easily applied to the car.

  Further, the silencer for an elevator according to the present invention comprises, in the above invention, a passenger number detecting means for detecting the number of persons in the car, wherein the antiphase sound output means is detected by the passenger number detecting means. When the number of persons is less than the predetermined number, the sound of the opposite phase generated by the phase inversion unit is transmitted to the interphone and output, and the number of persons detected by the boarding number detection unit is equal to or more than the predetermined number. In some cases, the sound of the opposite phase generated by the phase inverting means is not output from the intercom.

  In the present invention configured as described above, the number-of-passengers detecting means detects the number of persons who have entered the car, and the anti-phase sound output means is generated in the car only when the detected number of persons is less than the predetermined number of persons. By making the sound output from the interphone out of phase with the noise, when the sound output from the interphone is superimposed on the noise, it is possible to reduce the phase shift of the passengers riding in the car. . As a result, it is possible to prevent noise from being increased without being silenced by sound output from the car intercom. In this way, the antiphase sound output means limits the sound output by the interphone according to the number of persons detected by the passenger number detection means, so that the sound of the antiphase is appropriately superimposed on the noise in the car. be able to.

  Further, in the elevator silencer according to the present invention, in the invention, the passenger number detection means is provided in the car, and the boarding state acquisition means for acquiring the boarding state of a passenger who has boarded the car; Calculation means for calculating the number of people in the car based on the boarding state acquired by the boarding state acquisition means, and the boarding state acquisition means is a load for detecting a load in the car It is characterized by comprising at least one of a sensor, a surveillance camera for photographing and monitoring the inside of the car, and a human sensor for detecting a passenger boarded in the car.

  The present invention configured as described above can quickly acquire the boarding state of a passenger who has boarded the car by using at least one of a load sensor, a monitoring camera, and a human sensor. Then, the calculating means can easily calculate the number of people boarded in the car by referring to the acquired boarding state. In particular, when the passenger's boarding state is acquired from each of the load sensor, the monitoring camera, and the human sensor, the calculation means calculates the situation in the car more accurately based on the acquired boarding state. be able to.

  Further, in the elevator silencer according to the present invention, in the invention, the number-of-passenger detection unit includes a transmission unit that transmits the detected number of passengers in the car to the monitoring device. It is characterized by being provided outside. If comprised in this way, since a passenger number detection means and a monitoring apparatus are provided separately, a passenger number detection means can process independently of a monitoring apparatus, and the processing load concerning a monitoring apparatus is reduced. be able to.

  Further, the elevator silencer according to the present invention is the above-described invention, wherein the anti-phase sound output means has the anti-phase sound generated by the phase inversion means when the size of the car is smaller than a predetermined size. A sound is transmitted to the interphone and output so that the opposite phase sound generated by the phase inversion means is not output from the interphone when the size of the car is equal to or greater than a predetermined size. It is characterized by that.

  In the present invention configured as described above, the anti-phase sound output means outputs the sound of the anti-phase from the intercom with respect to the noise generated in the car only when the size of the car is smaller than the predetermined size. Since it is possible to suppress the spread of the outputted anti-phase sound, it is possible to reduce the phase shift when the sound outputted from the interphone is superimposed on the noise. Thereby, errors caused by differences in the size of the car can be reduced.

  The elevator silencer of the present invention is provided in this car, traveling in a hoistway, an interphone that inputs and outputs sound, and is connected to the interphone and receives sound input by the interphone. The elevator is provided with a monitoring device that transmits sound to be output to the intercom. The monitoring device includes a noise detection unit that detects noise generated in the car from the sound input by the interphone, and a phase inversion that generates a sound having an opposite phase to the noise detected by the noise detection unit. And anti-phase sound output means for transmitting the anti-phase sound generated by the phase inversion means to the interphone and outputting it, so that the anti-phase sound output means Since sound can be output from the intercom and superimposed in the car and muffled, noise generated in the car can be effectively reduced. Therefore, by using the communication function of the intercom already installed in the car, noise generated in the car can be sufficiently reduced and can be easily applied to the car. As a result, serviceability for passengers in the car can be improved, and high versatility can be obtained.

It is a figure showing composition of a 1st embodiment of a silencer of an elevator concerning the present invention. It is a flowchart explaining operation | movement of 1st Embodiment of the silencer of the elevator which concerns on this invention. It is a flowchart explaining operation | movement of 2nd Embodiment of the silencer of the elevator which concerns on this invention.

  EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the silencer apparatus of the elevator which concerns on this invention is demonstrated based on figures.

[First Embodiment]
As shown in FIG. 1, a first embodiment of a silencer for an elevator according to the present invention is a car 1 that travels in a hoistway (not shown), and an interphone 2 that is provided in the car 1 and inputs and outputs sound. And a monitoring device 4 that is connected to the interphone 2 and receives the sound input by the interphone 2 and transmits the sound to be output to the interphone 2. This elevator is erected in the hoistway and is provided with a pair of guide rails 8 for guiding the car 1, a ventilator 9 provided on the ceiling of the car 1 and ventilating the air in the car 1, and the car. 1 is provided on the corner of the ceiling, and includes a cooling device 10 that cools the air in the car 1. The interphone 2 is disposed on one of the four side surfaces of the car 1.

  In the first embodiment of the present invention, the monitoring device 4 includes noise detection means 6 for detecting noise generated in the car 1 among sounds input by the intercom 2, and noise detected by the noise detection means 6. A phase reversing unit 7 for generating a sound having a reverse phase with respect to the sound, and a reverse phase sound output unit (not shown) for transmitting the sound having the reverse phase generated by the phase reversing unit 7 to the intercom 2 for output. Yes.

  In addition, the first embodiment of the present invention includes passenger number detection means (to be described later) that detects the number of people who have boarded the car 1. Then, the anti-phase sound output means of the monitoring device 4 transmits the sound of the anti-phase generated by the phase inversion means 7 to the interphone 2 when the number of persons detected by the passenger number detection means is less than a predetermined number of persons, for example. When the number of passengers detected by the number-of-passengers detection means is greater than or equal to a predetermined number, the sound of the opposite phase generated by the phase inversion means 7 is not output from the intercom 2.

  Further, according to the first embodiment of the present invention, the above-described passenger number detection means is provided in the car 1, and the boarding state acquisition means for acquiring the boarding state of the passenger who has boarded the car 1, and this boarding state acquisition Calculation means 5 for calculating the number of people boarded in the car 1 based on the boarding state acquired by the means. The calculation means 5 is included in the monitoring device 4. The boarding state acquisition means includes a load sensor 3 for detecting a load in the car 1, a monitoring camera 11 for photographing and monitoring the car 1, and a human feeling for detecting a passenger boarded in the car 1. The sensor 12 includes at least one of the sensor 12, for example, a load sensor 3, a monitoring camera 11, and a human sensor 12. The load sensor 3, the monitoring camera 11, and the human sensor 12 are connected to the calculation unit 5.

  Moreover, in 1st Embodiment of this invention, the load sensor 3 is arrange | positioned at the lower surface of the car 1, and is attached so that the load of the car 1 may be measured. The surveillance camera 11 is installed below the cooling device 10 in the four corners at the top of the car 1. Furthermore, the human sensor 12 is attached to the upper part of the side surface on which the interphone 2 is provided among the four side surfaces of the car 1.

  Next, the operation of the first embodiment of the present invention will be described based on the flowchart of FIG.

  FIG. 2 is a flowchart for explaining the operation of the first embodiment of the silencer for an elevator according to the present invention.

  In the first embodiment of the present invention, when the car 1 travels as shown in FIG. 2 (step (hereinafter referred to as S) 101), the load sensor 3 detects the load in the car 1. At this time, the surveillance camera 11 captures and monitors the inside of the car 1, and the human sensor 12 detects a passenger boarded in the car 1. The load sensor 3, the monitoring camera 11, and the human sensor 12 transmit the acquired information to the monitoring device 4. When the monitoring device 4 receives the information on the boarding state of the passengers in the car 1 from the load sensor 3, the monitoring camera 11, and the human sensor 12, the information received by the calculation means 5 of the passenger number detection means, that is, the riding The number of passengers in the car 1 is calculated on the basis of the weight in the car 1, the image, the detected numerical value, and the like (S102).

  Next, the monitoring device 4 determines whether or not the number of passengers detected by the passenger number detection means is less than a predetermined number of people (S103). When the monitoring device 4 determines that the number of passengers detected by the passenger number detection means is less than the predetermined number of people, the monitoring device 4 receives the sound in the car 1 from the interphone 2 (S104), and the noise detection means 6 2 detects the noise generated in the car 1, for example, the operating sound of the ventilation device 9 and the cooling device 10 of the car 1 (S105).

  Then, the phase inverting means 7 generates a sound having an antiphase with respect to the noise detected by the noise detecting means 6 (S106), and the antiphase sound output means of the monitoring device 4 is generated by the phase inverting means 7. Is transmitted to the intercom 2 for output. As a result, a sound having a phase opposite to that of the noise is generated from the intercom 2 to mute the noise (S107), and the operations of steps S104 to S107 are repeated until the car 1 stops at the destination floor (S108). If noise is no longer detected by the noise detection means 6 in step S105, the phase inversion means 7 will not generate an antiphase sound. Then, when the car 1 arrives at the destination floor and stops in step S108, no sound is generated from the intercom 2, and the operation of the first embodiment of the present invention ends. On the other hand, when the car 1 is stopped in step S101, or when the monitoring device 4 determines in step S103 that the number of passengers detected by the number-of-passengers detection means is a predetermined number or more, as described above. The operation of the first embodiment of the present invention is terminated without causing the interphone 2 to output the reverse phase sound generated by the phase inverting means 7.

  According to the first embodiment of the present invention configured as described above, when the noise detection means 6 detects noise in the car 1 in step S105, the ventilation device in which the phase inversion means 7 is detected in step S106. 9 and a noise having an antiphase with respect to noise such as an operating sound of the cooling device 10, and the antiphase sound generated by the antiphase sound output means of the monitoring device 4 in step S <b> 107 is generated in the intercom 2 of the car 1. By transmitting and outputting, it is possible to superimpose the sound having the opposite phase to the noise in the car 1, so that the noise generated in the car 1 can be effectively reduced. The interphone 2 is already provided on one of the side surfaces of the car. In step S104, the interphone 2 receives noise from the interphone 2 and in step S107, a sound having a phase opposite to that of the noise is received. Since it can be transmitted to the part, it is not necessary to modify the car 1 to mute the noise generated in the car 1. Thus, by using the communication function of the intercom 2 already installed in the car 1, noise generated in the car 1 can be sufficiently reduced and can be easily applied to the car 1. Thereby, while improving the serviceability with respect to the passenger boarded in the car 1, high versatility can be obtained.

  Further, in the first embodiment of the present invention, the calculation means 5 calculates the number of people in the car 1 based on the information obtained from the load sensor 3, the monitoring camera 11, and the human sensor 12 in step S102. In step S107, the anti-phase sound output means of the monitoring device 4 outputs a sound having an anti-phase from the intercom 2 with respect to the noise generated in the car 1 only when the detected number of people is less than the predetermined number of people. When the sound output from the intercom 2 is superimposed on the noise, it is possible to reduce the shift of the phases of the passengers who have boarded the car 1. Thereby, it can prevent that noise increases without being muffled by the sound output from the intercom 2 of the car 1. In this way, the antiphase sound output means limits the sound output from the interphone 2 according to the number of persons detected by the load sensor 3, the monitoring camera 11, the human sensor 12, and the calculation means 5 in the passenger number detection means. As a result, it is possible to appropriately superimpose sounds having opposite phases with respect to noise in the car 1, so that an excellent silencing effect can be exhibited.

  In the first embodiment of the present invention, when the car 1 travels in step S101, the load sensor 3 installed in the car 1 detects the load in the car 1, and the monitoring camera 11 is in the car 1. When the human sensor 12 detects the passenger who has boarded the car 1, the boarding state of the passenger boarded in the car 1 can be quickly acquired. In step S102, the calculation means 5 of the monitoring device 4 can easily calculate the number of people in the car 1 from the received information such as the weight in the car 1, the video, and the sensed numerical values. In the first embodiment of the present invention, since the passenger's boarding state is acquired from the load sensor 3, the monitoring camera 11, and the human sensor 12 as described above, the calculation means 5 takes the boarding state from this boarding state. The situation in the car 1 can be grasped and calculated more accurately, and high accuracy can be ensured for the detection of the number of people in the car 1.

[Second Embodiment]
The second embodiment of the present invention differs from the first embodiment described above in that, in the first embodiment, a passenger number detection means for detecting the number of passengers in the car 1 is provided, and the anti-phase sound output of the monitoring device 4 is provided. When the number of passengers detected by the number-of-passenger detection means is less than the predetermined number of persons, the sound of the opposite phase generated by the phase inversion means 7 is transmitted to the interphone 2 and output, and detected by the number of passengers detection means In the second embodiment, the number of passengers detecting means is not made to output the sound of the reverse phase generated by the phase inverting means 7 from the intercom 2 when the number of persons is more than the predetermined number. Instead, the anti-phase sound output means of the monitoring device 4 outputs the anti-phase sound generated by the phase inversion means 7 when the size of the car 1 is smaller than the predetermined size. Transmitted by output, when the size of the car 1 is larger than the same or its predetermined size, is to have the sound of opposite phase generated by the phase inversion means 7 so as not to output from the interphone 2. Other configurations are the same as those of the first embodiment.

  Next, the operation of the second embodiment of the present invention will be described based on the flowchart of FIG.

  FIG. 3 is a flowchart for explaining the operation of the second embodiment of the silencer for an elevator according to the present invention.

  In the second embodiment of the present invention, when the size of the car 1 is smaller than a predetermined size, when the car 1 travels as shown in FIG. 3 (S201), the monitoring device 4 takes the car from the interphone 2. The sound in the car 1 is received (S202), and the noise detected by the noise detecting means 6 in the car 1 among the sounds input by the intercom 2, for example, the operating sound of the ventilation device 9 and the cooling device 10 of the car 1 Is detected (S203).

  Then, the phase inverting means 7 generates a sound having an opposite phase to the noise detected by the noise detecting means 6 (S204), and the antiphase sound output means of the monitoring device 4 is generated by the phase inverting means 7. Is transmitted to the intercom 2 for output. Thereby, a sound having a phase opposite to that of the noise is generated from the intercom 2 and the noise is silenced (S205), and the operation of the second embodiment of the present invention is finished.

  On the other hand, if the car 1 is stopped in step S201, or if no noise is detected by the noise detection means 6 in step S203, the operation of the second embodiment of the present invention is terminated. In the second embodiment of the present invention, when the size of the car 1 is equal to or larger than the predetermined size, the antiphase sound output means of the monitoring device 4 is generated by the phase inversion means 7. Since no opposite phase sound is output from the intercom 2, no opposite phase sound is generated from the intercom 2 with respect to the noise in the car 1, regardless of whether the car 1 travels.

  According to the second embodiment of the present invention configured as described above, the anti-phase sound output means of the monitoring device 4 reduces noise generated in the car 1 only when the size of the car 1 is smaller than a predetermined size. On the other hand, since the output of the opposite phase sound can be suppressed by outputting the opposite phase sound from the interphone 2, it is possible to suppress the phase shift when the sound output from the interphone 2 is superimposed on the noise. Can be reduced. As a result, the error caused by the difference in the size of the car 1 can be reduced, so that the sound output from the intercom 2 can be accurately transmitted to the vicinity of the noise source in the car 1, High reliability can be obtained with respect to the silencing effect in the car 1.

  In addition, although 1st Embodiment of this invention mentioned above demonstrated the case where the calculation means 5 of a passenger number detection means was contained in the inside of the monitoring apparatus 4, not only in this case, a passenger number detection means, For example, a transmission unit that transmits the number of people in the detected car 1 to the monitoring device 4 may be provided and provided outside the monitoring device 4. If comprised in this way, since a passenger number detection means and the monitoring apparatus 4 are provided separately, a passenger number detection means can perform a process independently of the monitoring apparatus 4, and the processing load concerning the monitoring apparatus 4 is carried out. Can be reduced. Thereby, the processing capability in the other apparatus with which the monitoring apparatus 4 was equipped can be improved.

DESCRIPTION OF SYMBOLS 1 Car 2 Intercom 3 Load sensor 4 Monitoring apparatus 5 Calculation means 6 Noise detection means 7 Phase inversion means 11 Monitoring camera 12 Human sensor

Claims (5)

A car traveling in a hoistway, an interphone provided in this car, which inputs and outputs sound, and a sound connected to the interphone for receiving sound input by the interphone and outputting sound to the intercom In an elevator silencer that is provided in an elevator with a monitoring device to transmit and reduces noise generated in the car,
The monitoring device
Noise detection means for detecting noise generated in the car among sounds input by the intercom;
Phase inversion means for generating a sound of opposite phase to the noise detected by the noise detection means;
An elevator muffler comprising: an antiphase sound output means for transmitting the antiphase sound generated by the phase inversion means to the interphone for output. In the elevator silencer according to claim 1,
A passenger number detecting means for detecting the number of passengers in the car;
The antiphase sound output means includes
When the number of passengers detected by the number-of-passenger detection means is less than a predetermined number of people, the sound of the opposite phase generated by the phase inversion means is transmitted to the interphone and output, and detected by the number of passenger detection means An elevator silencer characterized in that, when the number of persons is greater than or equal to a predetermined number, the sound of the reverse phase generated by the phase inversion means is not output from the intercom. The silencer for an elevator according to claim 2,
The number of passengers detecting means is
Boarding state acquisition means provided in the car for acquiring a boarding state of a passenger who has boarded the car;
Calculating means for calculating the number of people boarded in the car based on the boarding state acquired by the boarding state acquisition unit;
The boarding state acquisition means includes
A load sensor for detecting a load in the car;
A surveillance camera for photographing and monitoring the inside of the car;
An elevator muffler comprising at least one of a human sensor for detecting a passenger in the car. The silencer for an elevator according to claim 2,
The elevator noise reduction device, wherein the passenger number detection means includes transmission means for transmitting the detected number of people in the car to the monitoring device, and is provided outside the monitoring device. In the elevator silencer according to claim 1,
The antiphase sound output means includes
When the size of the car is smaller than a predetermined size, the sound of the opposite phase generated by the phase inverting means is transmitted to the intercom and output, and the size of the car is the same as the predetermined size or When the frequency is larger than this, the sound of the opposite phase generated by the phase inverting means is not output from the intercom.

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