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DESCRIPTION JPH077295

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DESCRIPTION JPH077295
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
auditory information transmission apparatus for notifying an operator of the working condition
of a working apparatus or the like by sound or pseudo sound, and further, the auditory
information transmission apparatus emits in accordance with the work environment. The present
invention relates to a sound volume control device of an auditory communication device capable
of adjusting the sound volume.
[0002]
2. Description of the Related Art In a high-level work vehicle provided with a boom that can
freely extend and contract and move up and down on the vehicle body and equipped with a work
table at the tip of this boom, jacks provided on the vehicle body at the time of work After
extending and stabilizing the vehicle body, the boom is raised and extended to move the work
platform to an arbitrary work position to perform work. In the case of an aerial work vehicle
equipped with such a jack or boom or other work device, a voice alarm system or the like that
warns the operator by pseudo sound when the operation beyond the safe work range of each
work device is performed There is a system that includes a voice guide system that prevents an
erroneous operation of the working device by notifying the operator of the operation content
prior to the operation of the working device when the operating device of the working device is
operated. Hereinafter, these voice alarm systems and voice guide systems will be referred to as
auditory information transmission devices.
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[0003]
Here, the volume of this voice alarm system or voice guide system is configured to be switchable
by a volume switch, and when working in a place where other noises such as a construction site
in the daytime are also large, If you work louder at night and have no other noises at night, turn
the volume down to minimize noise to your neighbors.
[0004]
However, it is necessary for the operator to manually adjust the volume of the voice guide system
etc., and it is necessary to adjust the volume one by one if the ambient noise changes. There is a
problem that the work efficiency is reduced because
In addition, if the nameplate of the volume switch becomes dirty, it can not be distinguished from
other switches, so the operator does not adjust the volume, and especially to the work site nearby
because the sound of the voice guide system during work is loud. There was also a problem that
the noise increased.
[0005]
The present invention has been made in view of such a problem, and the operator does not adjust
the sound volume, and according to the change of work environment such as day and night,
other noises, etc. An object of the present invention is to provide a sound volume control device
of an auditory information transmission device capable of adjusting the sound volume emitted by
the information transmission device.
[0006]
SUMMARY OF THE INVENTION In order to achieve the above object, in the sound volume
control device of the auditory information transfer device of the present invention, the operation
condition etc. of the working device provided on the vehicle body can be It has an auditory
information transmission device for notifying the operator by voice, and a controller for
performing control to change the volume emitted by the auditory information transmission
device based on detection signals from the noise detection means and the illumination detection
means.
[0007]
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In the sound volume control device of such an auditory information transmission device, the
sound volume of the auditory information transmission device can be increased as the
illuminance at the work site increases, and the noise around the work site also increases. As a
result, the volume of the auditory communication device can be increased.
Therefore, it is possible to obtain the sound volume of the auditory information transmission
device according to the work environment without the worker adjusting the sound volume.
[0008]
Preferred embodiments of the present invention will be described below with reference to the
drawings.
First, FIG. 2 shows a work vehicle equipped with a voice guide system, which is one of the
auditory information transmission devices according to the present invention. At the rear of the
vehicle body 11 of the work vehicle 10, there is disposed a swivel base 12 which can freely turn
horizontally with respect to the vehicle body 11. A telescopic (telescopic) telescopic boom 13 is
mounted on the upper part of the swivel base 12 so as to be freely raised and lowered.
Furthermore, a work bench 14 is mounted horizontally at the tip of the boom 13, and an
operator who gets on the work bench 14 can move to any height through the operation of the
swivel bench 12 and the boom 13. . When the boom 13 is raised and extended, a moment based
on the weight of the boom 13 and the work table 14 acts on the vehicle body 11 in a direction to
cause the vehicle body 11 to fall over. Therefore, in order to support the vehicle body 11 with
respect to the ground, jacks 15 are attached to the front, rear, left and right of the vehicle 11
[0009]
Here, the swivel base 12, the boom 13, the jack 15 and the like correspond to the working device
described in the claims. The swing operation of the swing base 12, the ups and downs of the
boom 13, the extension operation, and the extension operation of the jack 15 are performed by a
hydraulic actuator such as a hydraulic motor or a hydraulic cylinder. The operation of these
hydraulic actuators is performed by performing supply and discharge control of hydraulic oil
supplied from a hydraulic pump (not shown) provided in the vehicle body 11. The supply and
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discharge control of the hydraulic oil is performed by a control valve (not shown) provided
between the hydraulic pump and each hydraulic actuator. This control valve is an operation unit
provided on the vehicle body 11 and the work bench 14 ( Operation Means) The operation levers
16, 16 are configured to operate by operating the operation levers 16a, 16a.
[0010]
The operating lever 16a is provided in accordance with the number of hydraulic actuators such
as a boom telescopic cylinder, a boom hoisting cylinder, and a jack telescopic cylinder, and is
configured to be pivotable with respect to the operating unit 16. The operating lever 16a is
usually configured to maintain the initial position by the biasing force of a spring or the like.
Then, the control valve 16 is opened and closed by tilting the control lever 16a from the initial
position, and the desired hydraulic actuator is operated. Here, in consideration of the operability
and safety at the time of operation, these control levers 16a have a certain amount of inoperable
range from the start of the falling operation of the control lever 16a to the start of the opening
and closing operation of the control valve. It is configured to have (so-called "play").
[0011]
In such a high-level work vehicle, in order to improve the operability at the time of operation, the
operation levers for performing related operations (for example, telescopic operation and boom
operation of the boom) are concentrated at one place. It is arranged. A voice guide system is
provided to prevent erroneous operation of a plurality of operating levers disposed close to each
other. This voice guide system is capable of notifying the operator of the operation of each
working device operated by the operation of the operation lever when the operation lever is in
the inoperative range when operating the operation lever by pseudo sound It is.
[0012]
When the operator operates the operating lever to operate the working device, the moving part
of the operating device (for example, the boom) is operating without the operator operating while
looking at the operating lever while the operating device is operating. The control lever is often
operated while looking at the tip of the Therefore, when the control lever is positioned within the
inoperative range when the control lever is operated, that is, when the control lever is operated
by a slight amount, the operator is notified by a pseudo voice of the operation content of the
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work device operated by the operation. For example, when the boom extension operating lever is
operated, the pseudo voice of the contents such as "the boom extends" before the hydraulic
cylinder actually performs the boom extension operation by opening and closing the control
valve. The voice guide is emitted by the speaker 17. As a result, the operator can grasp the
contents of his / her own operation before the working device actually operates, so that the
erroneous operation of the working device can be prevented in advance.
[0013]
Here, depending on the environment around the work site, the volume of the voice guide may not
be appropriate at a constant level. For example, if the volume is adjusted to the environment
where work is performed using only your own work equipment during the daytime, the voice
guide can not be heard due to the noise emitted by other work equipment when the other work
equipment is also activated. There is. Therefore, if the volume is set large, when working at night,
in a residential area, etc., the voice guide is too large, and unnecessary noise will be emitted,
causing trouble near the work site. Therefore, voice guidance is performed at an appropriate
volume by the volume control device of the auditory information transfer device according to the
present invention. Hereinafter, an operation alarm device for a working device according to the
present invention will be described with reference to FIG.
[0014]
The volume control apparatus detects that the illuminance detecting means 22 for detecting the
illuminance (solar radiation) around the working device, the noise detecting means 23 for
detecting the noise around the working device, and the operation lever 16a are in the inoperative
range. Operation detection means 24 is provided. Then, control is performed by the controller 20
based on detection signals from the detection means 22, 23, 24, and a voice guide of appropriate
content is output from the speaker 17 at an appropriate volume. Here, the content of the voice
guide is determined by an output signal output from the voice guide output unit 21 built in the
controller 20 based on the operation signal from the operation detection unit 24 which operation
lever 16a is operated.
[0015]
Further, the volume of the voice guide is controlled by the controller 20 on the basis of detection
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signals from the illuminance detection means 22 and the noise detection means 23. The
illuminance detection means 22 detects whether the work site is daytime or nighttime by
detecting the presence or absence of solar radiation. Further, the noise detection means 23
detects whether other noises at the work site are large or small. Then, based on these detection
signals, the controller 20 performs control to adjust the volume of the voice guide into three
levels of high, middle, and low.
[0016]
Here, since the noise around the work site is often low at night, in principle, the volume is
controlled to "low" and in the daytime some noise is often generated around the work site
Therefore, in principle, the volume is controlled to "medium". Then, when a loud noise other than
that is generated in the vicinity, the worker may not be able to hear the voice guide at the volume
as it is, so 1 based on the detection signal from the noise detection means 23, respectively. Turn
up the volume step by step. That is, at night time, the volume is controlled to "medium", and at
daytime, the volume is controlled to "high".
[0017]
Here, the output level of the voice guide at each value detected by the illuminance detection
means 22 and the noise detection means 23 is "3" for volume "high" and "2" for "medium", The
case of "small" is shown in Table 1 as "1".
[0018]
【0018】
[0019]
Thus, the volume of the voice guide can be kept low at night when the illuminance is low, and the
volume can be increased at daytime when the illuminance is high.
In addition, when other noises are generated around the work device, it is possible to increase
the volume of the voice guide as the noise increases, in parallel with the adjustment of the
volume due to the change of the illuminance.
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Therefore, the noise generated by the voice guide to the vicinity of the work site can be
suppressed even when working at night, and the appropriate volume according to the work
environment even if the noise is generated due to other work etc. Voice guidance can be given to
workers.
[0020]
In the above embodiment, although the control of the volume of the voice guide system is
described as being controlled by the controller, the volume control can be arbitrarily adjusted by
the operator. A switch may be separately provided to complement the volume control by the
controller. In addition, it is possible to separately provide an on / off switch for performing an on
/ off operation of the output of the voice guide when there is no need for a voice guide, for
example, when repeating a single operation.
[0021]
In the above embodiment, although the case of using the voice guide system as the auditory
information transmission device has been described, the embodiment of the present invention is
not limited to this, and the extension amount and the ups and downs of the boom are detected.
Also, it is used for voice alarm system etc. in the operating range control device which issues an
alarm when the operating range of the boom is exceeded.
[0022]
As described above, in the operation alarm device of the work device of the present invention, it
is one of the auditory information transmission devices for notifying the operator of the
operation state of the work device or the like by sound or pseudo sound. And a controller for
adjusting the volume of the voice guide based on detection signals from the noise detection
means and the illumination detection means.
As a result, the volume of the voice guide can be obtained according to the work environment.
Therefore, even if the working environment changes, it is possible to prevent malfunction of the
working device by the operator and minimize noise near the work site. In addition, since the
volume adjustment operation of the voice guide system by the operator becomes unnecessary at
the time of work, the work efficiency can be improved.
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[0023]
Brief description of the drawings
[0024]
1 is a block diagram showing a sound volume control device of the auditory information
transmission device according to the present invention.
[0025]
2 is a side view of a work vehicle equipped with the above volume control device.
[0026]
Explanation of sign
[0027]
11 car body 12 swivel base 13 boom 14 work platform 15 jack 16 control unit 16a control lever
17 speaker
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