JPH05211708A - Monitoring equipment for worker performing job near high voltage power line - Google Patents

Abstract

PURPOSE:To make it possible to instantly generate an alarm for informing the workers and a supervisor of the lack of safety distance to a line and also notifying the supervisor a particular worker who is in danger among a plurality of workers without affecting the workability. CONSTITUTION:When the distance between a worker 6 and a high voltage power distribution line 2 becomes less than 60cm, approach detection means of a device 4 attached to an electric pole 1 output a signal. This signal is synthesized in a mixing circuit with a predetermined identification signal from a identification signal generating circuit and transmitted through a transmitting circuit and a transmitting antenna. Then, this transmitted signal is received by a receiving antenna and a receiving circuit of a monitor equipment 5; the state of output of each approach detection means is displayed for each identification signal; and the distance of less than 60cm between the worker 6 and high voltage power distribution line 2 is alarmed with a buzzer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is an overhead wire type distribution system in which a high-voltage distribution line and a low-voltage distribution line are installed side by side on a single pole, and electrical work is performed while maintaining a safe distance from the high-voltage distribution line. The present invention relates to a high-voltage worker monitoring device that ensures the safety of workers who are capable of doing so.

[0002]

2. Description of the Related Art In recent years, due to improvement of services for supplying electric power to consumers, live wire construction is often performed not only for low voltage distribution lines but also for high voltage distribution lines.

In particular, in a network system in which a high-voltage distribution line of 6600 V and a low-voltage distribution line are installed in parallel, an overhead line type distribution system implemented by a secondary backing system, etc. A low-voltage distribution line is stretched, and in the case of live line construction, it is necessary to secure a safe distance from the high-voltage distribution line.

In conventional electrical work, the operator pays attention not to approach the high-voltage distribution line within 60 cm, and the operator himself and the supervisor pay attention to the distance between the worker and the high-voltage distribution line. It was

On the other hand, as a technique considering the safety of hot-line construction, a protector for hot-line work has been proposed, as disclosed in Japanese Utility Model Publication No. 41-24217.

[0006] This kind of technique is used when working on an electric power line in an AC electrification section while directly contacting a live line of extra high voltage or when working near such a live line.
The protection cylinder protects the human body and performs live work.

On the other hand, as in the technique disclosed in Japanese Patent Application Laid-Open No. 55-25147, an infrared sensor receives infrared rays from the front of the television receiver and an alarm is generated according to an output signal from the sensor. Techniques are known. This type of technology detects the human body by infrared rays and is widely used for sensors such as theft alarms.

[0008]

However, in the conventional electric work, the operator should try not to approach the high-voltage distribution line within 60 cm, and the supervisor should keep the distance between the worker and the high-voltage distribution line. Even if they pay attention, it is predicted that depending on the content of the work, the worker and the supervisor may be absorbed in it, fail to secure a safe distance, and get an electric shock accident.

Further, when the technique disclosed in Japanese Utility Model Publication No. 41-24217 is used to perform work, the protective cylinder protects the human body, but the worker's degree of freedom is restricted. There was a hindrance to the improvement. Further, as in the technique disclosed in Japanese Patent Laid-Open No. 55-25147, a human body at a predetermined distance is detected by infrared rays, and even if it is applied to an electric construction outdoors, the influence of solar heat, a vehicle, etc. Accurate operation could not be expected due to the influence of exhaust gas.

Therefore, even if the worker and the supervisor are obsessed with the work, a warning device for notifying an electric shock accident that does not affect the workability by notifying that the safe distance cannot be maintained is provided. The technique disclosed in Japanese Laid-Open Patent Publication No. 59-63909 was provided.

However, since this type of alarm device is attached to a power pole and issues a warning only to an operator, a person other than the operator such as a supervisor located at a remote place may pose a danger to the operator. I could not detect. Therefore, it was difficult for supervisors such as site managers to recognize the work status of workers.

Moreover, in this type of electrical work, it is usually necessary for one supervisor to simultaneously supervise the electrical work of a plurality of workers. Therefore, when there are multiple work areas, this kind of device is attached to each power pole and one is used for each worker. It was difficult to identify. Therefore, even if one of the plurality of devices gives an alarm, the supervisor cannot instantly determine which worker the alarm is, which is inconvenient for monitoring.

Therefore, the present invention does not affect the workability and warns the worker and the supervisor that the safe distance cannot be maintained, and further, which worker among the plurality of workers is selected. It is an object of the present invention to provide a high-voltage worker monitoring device capable of instantly knowing whether or not the alarm is issued even if the supervisor is at a distant position.

[0014]

A high-voltage worker monitoring apparatus according to the present invention comprises a plurality of proximity detecting means for outputting a signal when the distance between the worker and the high-voltage line is within a predetermined distance, Identification signal generating means for generating an identification signal assigned to each of the plurality of proximity detection means, wireless transmission means for synthesizing an output of each of the proximity detection means and the assigned identification signal into an output signal, When the signal transmitted from the wireless transmission means is received and the output state of each proximity detection means is displayed for each identification signal, and when the distance between the worker and the high voltage line is within a predetermined distance, It is provided with an alarm means for notifying.

[0015]

In the high-voltage worker monitoring apparatus of the present invention, the proximity detecting means outputs a signal when the distance between the worker and the high-voltage line is within a predetermined distance. This signal is a predetermined signal of the identification signal generating means. And is transmitted from the wireless transmission means. Then, receiving the transmitted signal, displaying the output state of each proximity detecting means for each of the identification signals, and notifying when the distance between the worker and the high voltage line is within a predetermined distance Therefore, the state of the output of each proximity detection means can be seen at a glance, and it is possible to instantly know which worker and the high-voltage line are within a predetermined distance, even if the position is far from the work place. it can.

[0016]

EXAMPLES Examples of the present invention will be described below.

FIG. 1 is an explanatory view showing a usage state of a high-voltage worker monitoring apparatus according to an embodiment of the present invention, and FIG. 2 is a mounting state of a utility pole mounting device of the high-voltage worker monitoring apparatus according to an embodiment of the present invention. FIG.

In FIG. 2, reference numeral 1 is a utility pole, three high voltage distribution lines 2 are installed on the top of the utility pole 1, and two low voltage distribution lines 3 are installed below the high voltage distribution line 2. There is.
When carrying out electrical work, the pole mounting device 4 is attached to the pole 1 in advance, and a plurality of workers 6 are supervised by one supervisor 7 by the monitoring device 5 using the signal transmitted from the pole mounting device 4. Monitor. Note that the monitoring device 5 is usually attached to a work vehicle or carried by the supervisor 7. The high-voltage worker monitoring device according to this embodiment includes a utility pole mounting device 4 and a monitoring device 5.

A monitoring operation by the high-voltage worker monitoring apparatus of this embodiment will be described.

In FIG. 1, four utility pole mounting devices 4a to 4d are mounted on four utility poles 1a to 1d, respectively, and four operators 6 are installed.
It is assumed that a to 6d perform electrical work.

First, before the electrical work of the low voltage distribution line 3 is started, a utility pole mounting device 4 connected in an annular shape is installed around the utility pole 1 about 60 cm below the installation location of the high voltage distribution line 2, and The central axis and the central axis of the utility pole mounting device 4 are aligned with each other, and the utility pole mounting device 4 is fixed so as not to move with respect to the utility pole 1. After fixing the utility pole mounting devices 4a to 4d to the utility poles 1a to 1d on which the workers 6a to 6d climb in this manner, the display and notification operations of the utility pole mounting devices 4a to 4d and the monitoring device 5 are confirmed and a state in which monitoring is possible After setting to, start the work of the low voltage distribution line 3.

When any one of the plurality of workers 6a to 6d approaches the high-voltage power distribution line 2 within 60 cm, the power pole mounting devices 4a to 4d issue an alarm and display. Therefore, the power pole 1a to Workers 6a to 6 working at 1d
d knows that he is approaching the high-voltage distribution line 2.
In addition, a predetermined signal for notifying this is transmitted from the telephone pole mounting devices 4a to 4d to the monitoring device 5. Then, the number and the like of the corresponding utility pole mounting devices 4a to 4d are displayed and reported on the monitoring device 5, and which of the workers 6a to 6d among the workers 6a to 6d climbing the utility pole 1 and performing electrical work. Informs the supervisor 7 if he has approached the high-voltage distribution line 2.

Here, the circuit configuration of the utility pole mounting device and the monitoring device of the high voltage worker monitoring device of this embodiment will be described.

FIG. 3 is a block circuit diagram showing an electric pole mounting device 4 of a high voltage worker monitoring apparatus according to an embodiment of the present invention.

In FIG. 3, a sensor 11 detects that the distance between the worker 6 and the high-voltage distribution line 2 is within 60 cm. Specifically, how close the sensor 11 is to the utility pole mounting device 4. This is detected by a known proximity switch based on the principles of optical, electrostatic capacitance and electromagnetic induction. The detection signal is amplified by the amplifier circuit 12 and compared with the reference voltage sent from the reference voltage generation circuit 14 by the comparison circuit 13.
By comparing the reference voltage of the reference voltage generation circuit 14 of the comparison circuit 13 and the output from the sensor 11 side, when the output of the sensor 11 side is larger than the reference voltage of the reference voltage generation circuit 14, work is performed on the utility pole mounting device 4. The person 6 approaches and outputs an output signal when the distance to the high-voltage distribution line 2 is within 60 cm. Then, this output signal is mixed in the mixing circuit 15 with the identification signal sent from the identification signal generating circuit 16 according to each telephone pole mounting device 4, modulated by the transmitting circuit 17, and transmitted via the transmitting antenna 18. .. Also,
The signal that has passed through the comparison circuit 13 is amplified by the amplification circuit 21, sounds the buzzer 22, and turns on the display 23,
The corresponding worker 6 is warned. The block circuit constitutes the electric pole mounting device 4 of the high voltage worker monitoring apparatus according to the present embodiment.

FIG. 4 is a block circuit diagram showing the monitoring equipment 5 of the high-voltage worker monitoring apparatus according to an embodiment of the present invention.

In FIG. 4, the signal transmitted from the transmitting antenna 18 of the telephone pole mounting device 4 is received by the receiving circuit 32 via the receiving antenna 31 and demodulated therein. Then, the identification signal discriminating circuit discriminates which electric pole mounting device 4 the signal is from, displays the display 35 and sounds the buzzer 36 according to the setting state by the connection switching circuit 34. With the display 35 and the buzzer 36, the supervisor 7 such as the site manager can operate the workers 6a to 6a even if the supervisor 7 is away from the work place.
The work status of 6d can be grasped and they can be monitored. Further, the signal from the connection switching circuit 34 is sent to the recorder 37 for recording the work situation and the like, and is also sent to the other equipment 38 to record the data of the alarm occurrence situation and the like. The block circuit constitutes the monitoring equipment 5 of the high-voltage worker monitoring apparatus according to this embodiment.

By the way, in the present embodiment, the first to fourth electric poles 1a to 1d which emit different identification signals respectively.
The fourth telephone pole mounting devices 4a to 4d are mounted, and the first to fourth
It is assumed that the workers 6a to 6d of 1. perform the work. Then, the monitoring equipment 5 discriminates which of the telephone pole mounting equipments 4a to 4d the signals are based on the different identification signals, and performs appropriate display and alarm as appropriate. Therefore,
It is extremely convenient for the supervisor 7 to match the correspondence relationship between the first to fourth telephone pole mounting devices 4a to 4d and the display state of the display 35 of the monitoring device 5.
For example, when the first telephone pole mounting device 4a attached to the first telephone pole 1a detects the approach of the distance between the first worker 6a and the high-voltage distribution line 2, the indicator 35 of the monitoring device 5 Each pole 1a to 1d and each pole mounting device 4a to 4d so that the first lamp or the number 1 lamp is turned on.
And the display state of the display unit 35 are matched in advance. In this way, the supervisor 7 looks at the lighting state of the lamp of the display 35, and sees how many utility poles 1a to 1d the utility pole mounting devices 4a to 4d.
Since it can be determined at a glance whether it is a signal from each worker, each worker 6a-
It becomes easy to monitor 6d.

However, since the work speeds of the respective workers 6a to 6d are different, as the work is advanced, the respective utility poles 1a to 1d are
The order of No. and the order of each of the utility pole mounting devices 4a to 4d may be mixed, and the order of the utility poles 1a to 1d and the display state of the display 35 of the monitoring device 5 may not match. That is, the first utility pole 1a
First worker 6a finishes the work early, and the fifth utility pole 1
When moving to the work of e, the worker 6a uses the first utility pole 1a.
The first electric pole mounting device 4a is removed from the above, and the first electric pole mounting device 4a is attached to the fifth electric pole 1e to perform the work. Therefore, the order of each electric pole 1b to 1e and each electric pole mounting device 4a to
The order of 4d changes. Therefore, before the work of the fifth electric pole 1e is started, the electric poles 1b to 1e, the electric pole attachment devices 4a to 4d, and the display state of the display 35 are matched again. Then, this time, the second utility pole mounting device 4 of the second utility pole 1b
When b detects the approach of the distance between the worker 6 and the high-voltage distribution line 2, the first lamp of the indicator 35 of the monitoring device 5,
Alternatively, the number lamp "1" is turned on. By doing so, even if the order of the electric poles 1a to 1d and the order of the electric pole mounting devices 4a to 4d are different from those at the start of work, the supervisor 7 looks at the lighting state of the lamp of the display 35, Utility pole mounting devices 4a to 4 of which utility poles 1a to 1e
It can be judged at a glance whether it is a signal from d.

The order of the utility poles 1b to 1e and the display states of the utility pole mounting devices 4a to 4d and the display 35 are matched by setting the input / output relationship of the connection switching circuit 34. The specific circuit configuration of the connection switching circuit 34 can be implemented by a logic circuit.

FIG. 5 is an explanatory diagram showing a connection switching circuit of the monitoring equipment of the high-voltage worker monitoring apparatus which is an embodiment of the present invention.

As shown in FIG. 5, first, when a signal is transmitted from the first telephone pole mounting device 4a, the first signal on the display 35 side is displayed.
Output from the terminal 34a, and when a signal is transmitted from the second power pole mounting device 4b, the signal is output from the second terminal 34b on the display unit 35 side, and from the third power pole mounting device 4c. When a signal is transmitted, it is output from the third terminal 34c on the display 35 side, and when a signal is transmitted from the fourth telephone pole mounting device 4d, it is output from the fourth terminal 34d on the display 35 side. To be output. Thereafter, each time the order of the utility poles 1a to 1d and the order of the utility pole mounting devices 4a to 4d are changed, the connection switching circuit 34 is arranged so that the order of the utility poles 1a to 1d and the order of the indicator 35 of the monitoring device 5 match. Are appropriately operated to match the order of the electric poles 1b to 1e with the display states of the electric pole mounting devices 4a to 4d and the display 35.

In addition to the display 35, when the operator 6 is identified by the sound of the buzzer 36, the recorder 37,
In the case of using the other device 38, it can be appropriately set in the same manner.

As described above, in the high-voltage worker monitoring apparatus of this embodiment, the distance between the workers 6a to 6d and the high-voltage distribution line 2 is 60.
Sensor 1 that outputs a predetermined signal when the distance is within cm
1, amplification circuit 12, comparison circuit 13, reference voltage generation circuit 1
4, a plurality of proximity detecting means, an identification signal generating circuit 16 which is an identification signal generating means for generating an identification signal assigned to each of the plurality of proximity detecting means, and an output of each of the proximity detecting means. The wireless transmission means including the mixing circuit 15, the transmission circuit 17, and the transmission antenna 18 for synthesizing the identification signal and the output signal, and the signal transmitted from the wireless transmission means are received, and each proximity signal is received for each identification signal. A display unit 35 which is a display unit for displaying the output state of the detection unit,
Further, a buzzer 36, which is an alarm means for notifying when the distance between the worker 6 and the high-voltage distribution line 2 is within 60 cm, and a recorder 37 for recording them are provided.

Therefore, the high-voltage worker monitoring apparatus of the present embodiment is designed so that when the distance between the worker 6 and the high-voltage distribution line 2 is within 60 cm (predetermined distance), the power pole mounting device 4 mounted on the power pole 1 is installed. The proximity detecting means outputs a signal, and this signal is combined with a predetermined identification signal of the identification signal generating circuit 16 (identification signal generating means) in the mixing circuit 15 and transmitted through the transmitting circuit 17 and the transmitting antenna 18. Then, the transmitted signal is received by the receiving antenna 31 and the receiving circuit 32, the output state of each proximity detecting means is displayed on the display 35 for each identification signal, and the worker 6 and the high-voltage distribution line 2 are connected. The buzzer 36, the display 35 and the like notify that the distance is within 60 cm (predetermined distance). In addition, the buzzer 22 and the display 23 of the telephone pole mounting device 4 allow the worker 6 to keep a distance of 60 from the high-voltage distribution line 2.
Notify you that you are within cm (predetermined distance).

Therefore, in the high-voltage worker monitoring apparatus of this embodiment, the state of the output of the proximity detecting means of each utility pole mounting device 4 can be seen at a glance, and which worker 6a to 6d and the high-voltage distribution line 2 can be seen.
It is possible to instantly know whether or not the distance between and is within 60 cm (predetermined distance) even if the position is away from the work place. Moreover, the worker 6 can also be aware that the distance from the high-voltage distribution line 2 is within 60 cm (predetermined distance). Therefore, unlike the conventional case, the workability of the worker 6 is not affected, and it is possible to reliably know that the safety distance cannot be maintained even if the worker and the supervisor are absorbed in the work. It is possible and highly reliable in terms of ensuring safety. Moreover, since the supervisor 7 can instantly know which worker among the plurality of workers 6a to 6d is the alarm,
It is convenient for monitoring.

In the above embodiment, the connection switching circuit 34
Order of each utility pole 1a-1d and each utility pole mounting device 4a
Although the high voltage worker monitoring device capable of appropriately setting the correspondence between the display patterns of the display devices 35 to 4d and the display device 35 has been described, the connection switching circuit 34 is not absolutely necessary, and each telephone pole mounting device 4 is not necessary.
The signals a to 4d and the display 35 may be joined in a fixed state. However, in this case, the supervisor 7 must always remember the correspondence between the order of the electric poles 1a to 1e and the display modes of the respective electric pole mounting devices 4a to 4d and the display 35.

By the way, when the present invention is carried out, when the distance between the worker and the high voltage line is within a predetermined distance, the plurality of proximity detecting means for outputting a signal do not require contact with the human body. Proximity switches can be used.

Further, in the case of implementing the present invention, the identification signal generating means for generating the identification signal assigned to each of the plurality of proximity detecting means uses the specific oscillation frequency or the specific code as the identification signal for each worker. It can be an identification signal. Of course, the identification signal may be a signal obtained by turning on / off a specific oscillation frequency with a specific code.

When the present invention is embodied, the wireless transmission means for synthesizing the output of each proximity detection means and the assigned identification signal into an output signal has a known wireless function of modulation / demodulation. It may be a transceiver, and its monitoring area may be within 1000 m.

Further, in the case of implementing the present invention, the display means for receiving the signal transmitted from the wireless transmission means and displaying the output state of each proximity detection means for each of the identification signals, and the worker and the high voltage line. The alarm means for notifying when the distance is within the predetermined distance may display an indicator for identifying the worker by light, as in the present embodiment, and may intermittently make a buzzer sound, The monitoring target may be identified.
Of course, both may be used at the same time.

[0042]

As described above, the high-voltage worker monitoring apparatus of the present invention comprises a plurality of proximity detecting means, identification signal generating means, wireless transmitting means, display means and alarm means, and When the distance between the high voltage line and the high voltage line is within a predetermined distance, the proximity detection means outputs a signal, which is combined with a predetermined identification signal of the identification signal generating means and transmitted from the wireless transmission means. Then, receiving the transmitted signal, displaying the output state of each proximity detection means for each of the identification signals, and notifying when the distance between the worker and the high voltage line is within a predetermined distance. With this, the output state of each proximity detection means can be seen at a glance, and it is possible to instantly know which worker and the high-voltage line are within a predetermined distance, even if the position is far from the work place. Even if the worker and the supervisor are absorbed in the work, they can certainly know that the safety distance cannot be maintained, and it is extremely reliable in terms of ensuring safety, and is meaningful for monitoring.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a usage state of a high-voltage worker monitoring apparatus according to an embodiment of the present invention.

FIG. 2 is an explanatory view showing a mounting state of a pole mounting device of a high-voltage worker monitoring apparatus according to an embodiment of the present invention.

FIG. 3 is a block circuit diagram showing an electric pole mounting device of a high-voltage worker monitoring apparatus according to an embodiment of the present invention.

FIG. 4 is a block circuit diagram showing a monitoring device of a high-voltage worker monitoring apparatus according to an embodiment of the present invention.

FIG. 5 is an explanatory diagram showing a connection switching circuit of the monitoring equipment of the high-voltage worker monitoring apparatus which is an embodiment of the present invention.

[Explanation of symbols]

 1,1a to 1e Utility pole 2 High-voltage distribution line 4,4a to 4d Utility pole mounting device 5 Monitoring equipment 6,6a to 6d Worker 13 Comparison circuit 15 Mixing circuit 16 Identification signal generation circuit 22,36 Buzzer 23,35 Indicator 33 Identification Signal discrimination circuit 34 Connection switching circuit

Claims (1)

[Claims] 1. A plurality of proximity detecting means for outputting a signal when a distance between an operator and a high voltage line is within a predetermined distance, and an identification signal assigned to each of the plurality of proximity detecting means. Identification signal generating means, a wireless transmission means for synthesizing the output of each of the proximity detection means and the assigned identification signal as an output signal, and receiving the signal transmitted from the wireless transmission means, the identification signal High-voltage work characterized by including display means for displaying the output state of each proximity detection means for each time, and alarm means for notifying when the distance between the worker and the high-voltage line is within a predetermined distance Person monitoring device.