JPH113478A - Approach signaling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an approach signaling device with which a worker knows the approach of a moving object such as an unmanned (AGV) underground carrying vehicle and which is simply and easily applied to various moving objects. SOLUTION: A transmitter 2 is attached to an underground carrying vehicle (AGV) 5, a transmitting circuit part of the transmitter 2 sends a radio wave signal 4, and workers 6 carry signaling devices 3 which let them know the approach of the vehicles (AGV) 5 by receiving the signal 4 from the transmitter 2. Thereby, when the vehicle (AGV) 5 approaches, a receiving circuit part of the device 3 receives the signal 4 from the transmitter 2 that is attached to the vehicle (AGV) 5, and a tone emitting mechanism part of the device 3 is activated and notifies, the worker 6 carrying it that the vehicle (AGV) 5 approaches.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an approach notifying device for notifying an approach of a vehicle or the like, and more particularly to an approach notifying device for notifying an approach of an underground transport vehicle or the like running in a tunnel or the like at an excavation site.

[0002]

[Prior art and problems] In excavation work such as tunnels,
An underground transport vehicle that transports sediment, excavated materials, shield panels, and the like generated during excavation runs in the pit at the excavation site. Conventionally, many underground transport vehicles have a form in which a driver rides and travels, but today, underground transport vehicles that automatically travel without requiring a driver are used, and this unmanned ( The underground transport vehicle that has been subjected to AGV may be in the form of a train running on a track, or may be in the form of a mobile trolley that does not require a specific track.

[0003] As described above, the inside of the excavation site is unmanned (A
Because the underground transportation vehicle that was converted to GV is running,
In order to ensure the safety of workers, a traveling path on which a control truck of a mine transport vehicle or a shield machine travels is provided separately from a path through which the workers pass. In addition, since workers may enter the traveling path for repairing pipes supported on the pit wall or maintenance work, etc., the underground transport vehicles are also equipped with obstacle sensors etc. to detect workers. If you do, it will stop.

[0004] However, when an obstacle sensor or the like provided in the underground transport vehicle breaks down, a serious accident occurs when a worker entering the traveling path does not notice the approach of the underground transport vehicle. There are many dangers. In addition, labor savings will be required in the excavation work in the future, and it is inevitable that unmanned (AGV) underground transportation vehicles will be used even on narrow excavation sites where it is not possible to secure a dedicated traveling path. However, there is another problem that the introduction of the unmanned (AGV) underground transportation vehicle does not reduce the safety of the workers.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and enables an operator to know the approach of a moving object such as an underground transportation vehicle from a worker side, and to easily and easily handle various moving objects. It is an object to provide an approach notification device that can be used.

[0006]

SUMMARY OF THE INVENTION The gist of the present invention is to provide a transmitter provided with a transmitter circuit for transmitting a start signal for starting an annunciator, and a radio signal from the transmitter circuit of the transmitter. It comprises a receiving circuit section for receiving and an annunciator provided with an annunciation mechanism for informing the person of the annunciator of the approach, and a radio signal within a distance at which the transmitting circuit section of the transmitter can safely evacuate the person due to the approach. Or a receiving circuit unit of the annunciator can receive a radio signal within a distance at which a carrier can be safely evacuated due to the approach.

The approach notification device of the present invention will be described in more detail. A transmitter is attached to a moving object such as a mine transport vehicle, and a specific radio signal is transmitted from a transmitter circuit of the transmitter. And the worker carries the annunciator,
When the receiving circuit of the annunciator receives the radio signal from the transmitter, the annunciation mechanism is activated to notify the wearer that a moving object such as an underground transport vehicle is approaching.

[0008] It is desirable to adjust the sensitivity of the transmitting circuit of the transmitter or the receiving circuit of the annunciator so as to reduce the sensitivity, for example, so as not to make an announcement more than necessary. You must be informed within a distance that you can evacuate to. In addition, the distance of the transmitting or receiving area can be variably adjusted by using a volume or a jumper plug on the transmitter or annunciator so that the user can set the distance of the transmitting area or the receiving area arbitrarily. You may make it free.

A transmitting circuit and a receiving circuit are provided for each of the transmitter and the notifier of the approach notifying device, and the notifier automatically returns the completion of the reception and informs the transmitter that the reception has been reliably received. Alternatively, the person carrying the annunciator may transmit a reply signal to the transmitter by operating a switch to notify the completion of the reception. Furthermore, in addition to the notification device automatically replying the completion of the reception, the completion of the notification confirmation of the carrier is transmitted to the transmitter by a switch operation by the carrier to ensure the confirmation of the notification. It may be.

The method of attaching the transmitter to the moving object is not particularly limited, and may be fixed by screws or the like, magnetically attached by a magnet, or attached by a suitable method. The method of carrying the annunciator is not particularly limited, and may be carried in a pocket or by using a key ring, a strap, or the like. The radio signal to be used is not particularly limited, and a suitable signal may be used. For example, a generally available pager may be used as the annunciator using PHS radio waves.
Alternatively, a pager dedicated to the annunciator may be manufactured.

[0011] The notification means by the notification mechanism section includes sound, vibration,
The method of notifying by sound, including light, includes electronic sounds, bells, and voices, and may be notified using an optimal method. In addition, the notification means is a sound alone, or
It may be notified along with vibration using an eccentric rotation or an electromagnet, or may be notified together with light such as light emission of an LED, and may be used according to the surrounding environment (a noisy place / dark place, etc.).

The power source of the approach notification device (transmitter / notifier) is not particularly limited, and any suitable power source may be used. The transmitter may use the power source of the moving object, and the annunciator may use a button battery, a rechargeable battery, or the like.

[0013]

Since the approach notification device of the present invention is configured as described above, when a moving object such as an underground transportation vehicle to which a transmitter is mounted approaches, the notification device carried by the worker is: The radio signal transmitted from the transmitter attached to the moving object is received, the notification mechanism of the notification device is activated, and the worker carrying this notification device is transported underground by sound, vibration, light, etc. Notifies the approach of a moving object such as a vehicle.

[0014]

FIG. 1 is a block diagram showing an embodiment of an approach notifying device mainly using sound, wherein 1 is an approach notifying device, 2 is an annunciator 3 and FIG. A transmitter 3 for transmitting a radio signal to the transmitter 3 is a notifier for receiving a radio signal from the transmitter 2 to notify the approach of a moving object. A transmitter 21 of the transmitter 2 transmits a radio signal via an antenna 22. Reference numeral 23 denotes a power supply unit that causes the transmitter 2 to function.
31 of the annunciator 3 is a receiving circuit unit for receiving a radio signal from the transmitter 2, and receives the radio signal via the antenna 32. Reference numeral 33 denotes a sensitivity adjustment unit that adjusts the reception sensitivity of the reception circuit unit 31. Reference numeral 34 denotes a sound generating mechanism for notifying the approach of a moving object by sound. Reference numeral 35 denotes a power supply unit that causes the notification device 3 to function.

FIG. 2 is a view showing an example of use of the approach notification device according to the present invention. As shown in the figure, an underground transport vehicle (AGV) is used.
When the worker 6 enters the travel path 52 on which the vehicle 5 travels and performs repair work or maintenance work on the pipe 8 and the like supported on the inner wall 72, the worker 6 attaches the annunciator 3 to pants or the like and carries it. Even if the operator does not notice the approach of the underground transport vehicle (AGV) 5 during the operation, the annunciator 3 receives the radio signal 4 transmitted from the transmitter 2 attached to the underground transport vehicle (AGV) 5. Sounding mechanism 3 of annunciator 3
4 is activated to notify an operator 6 carrying the annunciator 3 that the underground transport vehicle (AGV) 5 is approaching. FIG. 3 is a sectional view showing a state in one shaft.

[0016]

As described above, the approach notification device of the present invention enables the worker to know the approach of a moving object such as an underground transportation vehicle from the worker side, and thus can be used in an excavation site at an excavation site where securing of space is limited. Therefore, extremely high security can be ensured. In addition, this approach notification device can be used immediately by installing the transmitter on the underground transportation vehicle without having to put an antenna etc. in the mine when introducing it, and carrying the annunciator by the worker. Therefore, it can be used simply and easily. Further, the approach notification device can be used immediately not only in a pit at an excavation site but also at a site where an operator may come into contact with a moving object.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of an approach notification device mainly by sound.

FIG. 2 is a diagram showing an example of use of the approach notification device of the present invention.

FIG. 3 is a sectional view showing a state in one pit.

[Explanation of symbols]

1-approach notification device, 2-transmitter, 21-transmitting circuit section, 2
2-antenna, 23-power supply unit, 3-notifier, 31-receiving circuit unit, 32-antenna, 33-sensitivity adjustment unit, 3.4-
Sound generating mechanism section, 35-power supply section, 4-radio signal, 5-underground transportation vehicle (ΛGV), 51-obstacle sensor, 52-runway, 53-soil, 6-worker, 61-worker passage, 7 −
Underground, 71-underground, 72-underground wall, 8-pipe, 9-underground

Claims (4)

[Claims] 1. A transmitter provided with a transmitter circuit for transmitting a start signal for activating a notifier, a receiver circuit for receiving a radio signal from the transmitter circuit of the transmitter, and a transmitter of the notifier. Or a notifying device provided with a notifying mechanism for notifying that the transmitting circuit portion of the transmitting device transmits a radio signal within a distance at which the evacuation of the carrier by approaching can be safely performed, or the receiving circuit of the notifying device. An approach notification device capable of receiving a radio signal within a distance at which the part can safely evacuate a carrier due to approach. 2. An approach notification according to claim 1, wherein a distance of a receivable range of a transmitting circuit portion of said transmitter or a receivable range of a receiving circuit portion of said notifier is variably adjustable. apparatus 3. A transmitting circuit for transmitting a reply signal to said annunciator, and a receiving circuit for receiving a reply signal from said annunciator is provided on said oscillator. Approach notification device 4. The approach notification device according to claim 1, wherein said radio signal uses a PHS radio wave and uses a pager as an annunciator.