JPH07309578A - Monitoring device for crane - Google Patents

Abstract

PURPOSE:To permit the hearing of the sound having the sound volume corresponding to the remote or far of the image taken photograph by a TV camera, with realism. CONSTITUTION:A tower crane 1 is equipped with a boom 3 which is arranged trunably through a turning device on a tower 2, operator room 4, and a suspending wire 6 which is suspended at the top end of the boom 3 and has a hook at the top end. At the top end of the boom 3, a wire 10 for camera is suspended in free elevation and lowering in the reverse parallel to the suspending wire 6. At the lower end of the wire 10, a TV camera 12 is installed, and the part below the boom 3 is taken photograph by the TV camera 12, and the image is displayed on a monitor TV 14 arranged in the operator room 4. A microphone 16 is attached on the TV camera 12, and the sound in the vicinity of the image pick-up region is picked up, and the sound information is announced by a monitor speaker 18 through an amplifier 17 installed in the operator room 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crane monitor device capable of obtaining voice information corresponding to obtained image information.

[0002]

2. Description of the Related Art At present, a television camera is attached to the tip of a boom of a tower crane, and this image information is received by a monitor television installed in a crane operator's room, so that it is possible to confirm when slinging a sling, and to check the ground level. It is possible to check the relative height and the posture of the suspended load. In a crane equipped with this kind of monitor, the operator performs a lifting operation based on a visual judgment on a television screen and a wireless instruction.

[0003]

However, the monitor television of this type is generally silent, and the lifting operation must be carried out while visually confirming the state of the suspended load and the lifting height, position, etc. that change from moment to moment. Since it does not happen, it lacks the sense of realism, the situation is insufficiently grasped, and the operator's burden is heavy.

For example, when the wind direction changes or the wind speed changes during the lifting operation of a suspended load, the information can be obtained by visually confirming the wind speed and anemometer, but it is recognized as a change in the actual sound. There will be nothing. Also, a squeaking noise or the like is always generated before the posture of the suspended load is changed, but this kind of alarm is not transmitted as raw information to the operator side, which causes a delay in predictive safety measures.

For example, as shown in Japanese Utility Model Laid-Open No. 3-11087, there is a tower crane in which the operator and the lower part of the post can talk and make a warning through a speaker that also serves as a microphone. I didn't follow, and I heard the sound at a place different from the image, which made it unrealistic.

The present invention solves the above problems, and an object of the present invention is to provide a crane monitor device capable of realistically listening to the sound of a volume corresponding to the perspective of an image captured by a television camera. It is provided.

[0007]

To achieve the above object, according to the present invention, a television camera is hung up and down on the tip of a crane boom, and an image is taken by the television camera on a monitor television provided in an operator room. In the monitor device for the crane that receives the image information,
A microphone is attached to the television camera, and audio information picked up by the microphone is broadcast through a monitor speaker provided in the operator room.

Further, in the present invention, the microphone and the monitor speaker may be stereo (claim 2).

Further, in the present invention, both microphones forming the stereo are arranged orthogonally on both sides of the optical axis of the television camera so as to face each other, and a reflector is provided so as to face the sound collecting surface of each microphone. It is also possible to adopt a structure in which the microphones are arranged so as to intersect with the optical axis (claim 3), or both microphones constituting the stereo are arranged in the ear part of a standard human upper body model (claim 4). .

[0010]

With the above arrangement, the operator hears the sound of the volume corresponding to the perspective of the image displayed on the monitor television.

When the structure of claim 2 is adopted, sounds having different sound volumes are collected on the left and right sides, and this state is broadcast by the monitor speaker and becomes a stereoscopic sound, so that the presence is further enhanced.

Further, in the case of the structure of claim 3,
Since each microphone collects not only the direct sound but also the sound reflected from the reflector, when it is reproduced, it is formed into a sound image in which not only the right and left but also the front and the rear can be distinguished. In the case of the configuration of claim 4, Since the input sound to the microphone is input as a reflected sound from the earlobe, the head, etc., the directions of the front, back, left, and right sounds can be discriminated from the difference in the sound quality.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 exemplifies a case in which the present invention is applied to a tower crane.
A boom 3 and an operator chamber 4 which are rotatably arranged on a swing device (not shown) and a hanging wire 6 which is hung at the tip of the boom 3 and has a hook at the tip. The hanging load w is hung on the hook of the wire 6. The boom 3 is tilted at a predetermined angle by the hoisting device 8, and the wire 6 is hoisted and hoisted by the hoisting device 9.

A camera wire 10 is vertically hung at the tip of the boom 3 in parallel with the hoisting wire 6 and hoisted and hoisted by a hoisting device 11. A television camera 12 is attached to the lower end of the wire 10 so as to be able to move up and down, whereby an image of the lower portion of the boom 3 is picked up and the image is projected on a monitor television 14 arranged in the operator room 4.

Further, the television camera 12 is provided with a microphone 16 for picking up the sound in the vicinity of the imaging range, and the audio information is provided in the operator room 4 by the amplifier 1
It is output from the monitor speaker 18 via 7 and broadcast.

It should be noted that the hoisting device 11 for the camera wire 10 is driven in synchronism with the hoisting device 5 for hoisting the load, and the wire 10 is hoisted and unwound in parallel with the wire 6 so that the television camera 12 is constantly hoisted. An image of the vicinity of the upper portion of w may be taken, or the television camera 12 may be brought closer to or farther from the suspended load w by being freely driven by an operator's remote operation.

Further, the monitor speaker 18 may be a headphone type which is worn on the operator's ear, or may be a general speaker which can be heard in the entire operator room 4, and in any case, the operator is displayed on the monitor television. The sound corresponding to the image can be heard with the volume corresponding to the perspective of the image.

For example, when the television camera 12 is brought close to the ground during slinging work, the slinging worker waiting on the ground can easily hear the instruction, and the operation according to the instruction can be performed without using the radio. Can be done.

After the slinging work is completed, the hoisting work is carried out and the TV camera 12 is raised to broadcast the wind noise near the suspended load w in a realistic manner. It is possible to understand changes in wind speed, and it is possible to take safety measures such as suspension of lifting by confirming the wind direction, anemometer, etc. early based on such situation judgment.

Furthermore, when the posture of the suspended load w tends to tilt during the lifting work, a squeaking sound or the like is generated as a sign of such a situation. However, such a state can be immediately supplemented as a voice, and therefore, in combination with the state of the screen. Predictive safety measures can be taken quickly.

In the figure, one microphone 1
The sound was collected at 6 and flowed from one monitor speaker 18 into the operator room 4, but the sound was collected by two microphones, and the amplifier 17 was also a stereo amplifier, so that it was broadcast from two monitor speakers. Are separated and can be heard as a three-dimensional sound image, which can further enhance the sense of presence.

At this time, both microphones constituting the stereo are orthogonally arranged on both sides of the optical axis of the television camera 12 so as to face in opposite directions, and a reflector is provided so as to face the sound collecting surface of each microphone. , The reflector functions as if it were the earlobe of the operator, and each microphone picks up the reflected sound in addition to the direct sound with a predetermined time delay, and this is reproduced. In this case, not only right and left separation but also front and rear can be distinguished, and a sound image with a sense of reality can be obtained.

If the two microphones forming the stereo are placed in the ear of a standard human upper body model,
Since the input sound to the microphone is input as a reflected sound from the earlobe, head, etc., the directions of the front, back, left, and right sounds can be discriminated by the two microphones due to the difference in sound quality.

[0025]

As described above in detail with reference to the embodiments, in the crane monitor device according to the present invention,
Since the operator hears the volume of sound corresponding to the perspective of the image displayed on the monitor TV, the suspended load can be sensed not only visually but also by hearing, which imposes a burden on the operator. It has the advantages that the situation can be grasped more accurately without giving a warning, risk prediction is easy, and the risk of an accident is reduced.

Furthermore, by collecting the direct sound and the reflected sound in addition to the stereo system and playing them through a stereo speaker, it is possible to discriminate between left and right and front and back, and a sound image with a sense of realism. The advantage is that information that cannot be obtained by just looking at the image can be naturally recognized.

[Brief description of drawings]

FIG. 1 is an explanatory view of a crane monitor device according to the present invention.

[Explanation of symbols]

 1 Tower Crane 3 Boom 4 Operator Room 6 Wire for Lifting Load 10 Wire for Camera 12 Television Camera 14 Monitor Television 16 Microphone 18 Monitor Speaker

Claims (4)

[Claims] 1. A monitor device for a crane, wherein a television camera is hung up and down on the tip of a crane boom, and a monitor television provided in an operator room receives image information captured by the television camera.
A monitor device for a crane, wherein a microphone is attached to the television camera, and audio information picked up by the microphone is broadcast through a monitor speaker provided in the operator room. 2. The crane monitor device according to claim 1, wherein the microphone and the monitor speaker are stereo. 3. The microphones constituting the stereo are arranged orthogonally on both sides of the optical axis of the television camera so as to face in opposite directions, and a reflector is provided so as to face the sound collecting surface of each microphone. The monitor device for a crane according to claim 2, wherein the monitor device is disposed so as to intersect with. 4. The monitor device for a crane according to claim 2, wherein both microphones forming the stereo are arranged in an ear portion of a standard human upper body model.