JPH01263399A - Method and device for controlling in-pit operation condition - Google Patents

Abstract

PURPOSE:To accurately grasp the general progress of in-pit operations and perform the proper direction of operations by detecting vibration generated in each operation site in a pit and carrying out the data analysis of a characteristic value pattern peculiar to each in-pit operation. CONSTITUTION:A piezoelectric acceleration sensor is provided in each operation site in a pit to detect vibration generated in various operation portions. Then, the data analysis of characteristic value patterns peculiar to various in-pit operations is carried out based on the generated vibration by means of an analysis device 40 having a frequency discriminator, a level discriminator, and a generated time detector, etc. Based on the result, the general progress of the in-pit operations are accurately grasped and necessary control signals are transmitted to each operation site by a central control room.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method and apparatus for suitably managing work conditions at the site of various types of underground work such as tunnel excavation work.

[Prior art] 1. The largest work process in a tunnel project is excavation work in a tunnel. When carrying out this excavation work, it is extremely common for the work to proceed in an assembly line manner. However, since work is carried out in an extremely limited space such as inside a tunnel (underground), even if we simply plan the introduction of rationalized machinery, hire skilled labor, strengthen the management system, etc., it will not be possible to When a bottleneck occurs, a large amount of energy is required to eliminate and maintain it, which often results in a negative effect. In particular, when working inside I-tunnels using the blasting method, in order to meet the ultimate goal of increasing the construction speed of tunnel construction, the important focus is on how quickly the earth and sand can be removed after blasting to speed up the work. It's coming.

On the other hand, the present applicant has published Japanese Patent Publication No. 1983-1.
We have developed a system as disclosed in Publication No. 43. This system detects noise at each work site, analyzes characteristic value patterns unique to each work from the noise, and allows work leaders and construction managers to quickly and accurately make comprehensive decisions, and It is now possible to quickly convey orders and work instructions to the end.

[Problems to be Solved by the Invention] Although the system disclosed in Japanese Patent Publication No. 50-11.843 is very useful, it has the following problems because it is based on noise detection.

First, it is difficult to distinguish between tasks that have similar noise characteristic value patterns.

Second, if a microphone is used to detect noise, the microphone is not suitable for use in an environment with a large amount of suspended dust or high temperature or humidity, which may result in poor noise detection. .

Thirdly, since the conversation of the worker is also detected as noise during work, a circuit configuration is required to cut the noise.

Fourth, it requires effort to manage paper for recording the detected noise waveform and characteristic value pattern.

Of course, the problems of Korekasa can be solved in a software-intensive manner by introducing a computer to control the system and incorporating a predetermined program. However, new effort is required to create the predetermined program.

The present invention was proposed in view of the two drawbacks of the prior art, and relates to a method and apparatus for suitably managing underground working conditions.

1. Means for Solving the Problems] In the underground work situation management method of the present invention, a vibration detection sensor is provided at the underground work site, the sensor detects vibrations generated at various working parts in the hole, An analysis device analyzes the detected vibrations into characteristic value patterns specific to various types of underground work, and based on the results of the data analysis, predetermined control signals are transmitted to various work sites.

In addition, the underground work status management device of the present invention includes a vibration detection sensor installed at the underground work site, data analysis of the detected vibration into a characteristic value pattern unique to each work, and data analysis. The system includes a monitor device that outputs predetermined control signals to various work sites based on the results of the above, and a line that transmits various signals and information between the sensor, the analysis device, and the work site.

Furthermore, the method for managing underground work conditions of the present invention includes installing noise collectors at appropriate locations in the working section of the tunnel, collecting noise generated from various operations inside the tunnel, and transmitting the noise through a sound level meter. This method is combined with a method for monitoring the work status of work processes within one process, which analyzes characteristic value patterns unique to each work.

-5= In this case, the underground work status management device consists of: 1 to a noise collector placed at an appropriate location in the tunnel; an indicating sound level meter installed at a recording location and connected to the noise collector; a frequency analyzer;
Preferably, it is used in combination with an in-channel noise monitoring and measuring device consisting of a level recorder.

In addition, it is preferable to use a piezoelectric acceleration sensor as the vibration detection sensor used in implementing the present invention.

Furthermore, the analysis device used in the present invention includes a frequency discriminator (
bandpass filter), level discriminator (comparator),
Preferably, it includes an occurrence time detector (timer) for detecting the occurrence time of vibration and a central processing unit 1-.

In addition, as a line for transmitting signals or information between vibration detection sensors, analysis equipment, and work sites, it is preferable to use two-core cables or optical cables, or use power line modems to connect construction power lines and signal lines. may be shared.

1. According to the present invention, vibrations occurring at a work site are detected, and from the results of analyzing the vibrations, the status of the work currently being carried out can be grasped. Based on this, a predetermined command or information or control signal is fed back to the work site.

As a result, the work situation can be appropriately managed.

Here, since the present invention performs management based on vibrations specific to various operations in the mine or their characteristic value patterns,
Detection failures due to worker conversation or various noises are completely eliminated. In addition, since a microphone is not used to detect vibrations, there is less risk of detection failures even in environments where Emperor dust is floating or in hot and humid environments.

Furthermore, by providing the central processing unit 1- with a display function and a memory function, recording paper becomes unnecessary.

In addition, if the present invention is combined with a system that detects and manages noise, it is possible to grasp the work situation more accurately.Moreover, when the ground is soft, vibrations are immediately attenuated and vibrations cannot be detected. Even in cases where this is not possible, management can be performed appropriately.

[Embodiments] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows an example of an underground work management system according to the present invention, which includes a vibration detection sensor, that is, an acceleration sensor 10. The output signal of this sensor 10 is sent to an amplifier 12.
The signal is inputted to a bandpass filter 14, a comparator 16, and a timer 18 via a filter, and after predetermined processing is performed, it is inputted to a central processing unit (CPU) 20. In addition, code 2
2 indicates a memory provided in the CPU 20. CPU20
The output is from modem 24, communication cable 26, modem 28,
Display device 3 of the central processing room via interface 30
2 is input. Here, each block in the upper part of FIG. 1 shows equipment installed in the mine, and each block in the lower part shows equipment installed in the central control room.

The display device 32 displays various information such as, for example, vibration characteristic value patterns that differ for each type of work or the work contents corresponding to the patterns.

By examining this variety of information, supervisors in the central control room can easily and accurately determine what kind of work is currently being done at the work site, allowing them to grasp the progress of underground work. This is possible.

FIG. 2 explains an example of the hardware of a system using the present invention, in which the output of the acceleration sensor 10 is connected to the bandpass filters 14-1, 14-2, . . . 14-N, and the CPU 2.
It is input to the analysis device 40 including 0 and so on. The vibration characteristic value pattern or the corresponding output signal is transmitted from the interface 42 of the analysis device 40 to the display device 32 and the work equipment 44.

FIG. 3 shows the configuration of rough 1-ware incorporated into the analysis device 40 or the CP LL 20.

A work type recognition program P1 is built into the analysis device 40, and this program P1 is used for data input/output, communication control block P2, and frequency characteristic discrimination program P3.
, a pattern discrimination program P4, etc.

Here, the frequency characteristic discrimination program P3 is coded P3-1.
. . . This is a program for comparing various frequency characteristics such as those shown in P3-N with frequency characteristics specific to each type of work to determine the type of work. Then, the pattern discrimination program P4 has codes P4-1...P4-N
This is a program for comparing various vibration patterns with patterns specific to various types of work, as shown in , to determine the type of work.

On the other hand, as shown by the dotted line in FIG. 3, the analysis device 40 has an inverter control program P5. ．． Working equipment inside and outside the mine 44
It also incorporates a traffic signal control program P6 for controlling the operation of the vehicle (Fig. 2), a display device control program P7 for controlling the display device 32 (Fig. 1) or 32A (Figs. 4 and 5), etc. It is.

Next, with reference to FIG. 4, an explanation will be given of a manner in which the work of transporting excavated earth and sand to the work equipment, ie, 1, to the soil dumping site using the rack 44A is managed by the management system using the present invention. do.

In FIG. 4, vibrations caused by the operation of the truck 44A are detected by the acceleration sensor 10 in the mine (T),
The output is input to the analysis device 40. After a predetermined process, a predetermined output signal is output from the analysis device 40 to an inverter 46.
It is transmitted to the fan 48A for controlling underground ventilation, or is output to the signal equipment 48 for supporting the operation control of the truck 44A, the display device 32A at the mine entrance, and the operation main equipment W52 in the central processing room 50. The display device 32 shows various information to the operator or work manager. Based on this information, the administrator issues necessary commands from the wireless paging station 54. This command is transmitted to the underground workers (including the driver of the +-rack 44A) via the coaxial cable 56, telephone 60, wireless distributed transmission/reception bag W62, portable radio 64, vehicle radio 66, etc. Ru. On the other hand, information from field workers is also transmitted to the administrator via the coaxial cable 56 and the wireless paging station 54. In addition, the truck 44A is equipped with an emitting element 68, which transmits light to a light receiving element 70 in the mine.
track 44. Information indicating the position of A is transmitted to the manager in the central processing room 50 via the cable 72 and the output management main device 74.

FIG. 5 shows the management system of FIG. 4 in more detail. Note that the symbol O in FIG. 5 indicates an on-site worker in the mine.

FIG. 6 shows another embodiment of the present invention.

This embodiment consists of a management system that detects vibrations and performs various controls, as shown in the lower middle part of Figure 6, and a system that detects noise at the work site and monitors work based on the noise pattern.
(shown in the upper part of FIG. 6). This work noise monitoring system is roughly composed of a microphone 80 for noise detection and a work monitor analysis device 82.
An amplifier 84 for amplifying the output of , a frequency analyzer 86, a work content analyzer 88, a timer 90, and a recorder 1192 are built in. During operation, microphones 80 installed at various work sites detect noise, and the output thereof is subjected to predetermined processing by each of the above-mentioned devices and analyzed into a unique noise pattern, and the noise pattern is printed out in the record 5192. Ru.

This noise pattern differs depending on the type of work, so
By examining the printed noise pattern, the work manager can learn the details of the work being carried out at the site where the microphone is installed.

By combining a noise-based monitoring system and a vibration-based management system in this way, the type of work can be determined more accurately, and appropriate management can be achieved even on soft ground where vibrations are easily damped. Therefore, it is very convenient.

[Effects of the Invention] As explained above, according to the present invention, various controls are performed based on detecting vibrations, so (1) erroneous control due to misdetection of work noise due to various noises is prevented. (2) Can be used in work sites where it is difficult to detect noise using a microphone, such as when there is a large amount of dust floating or high temperature and humidity; (3) By incorporating a central processing unit (CPU), (4) By combining it with a system that detects and monitors noise using a microphone, it can be used even on soft ground where vibrations are easily damped. It has excellent effects.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an example of a work management system using the present invention, FIG. 2 is a block diagram showing an example of a management device of the present invention, and FIG. Schematic diagram showing an example of incorporated software, No. 4
The figure is a schematic diagram showing the state in which the management system is implemented, FIG. 5 is a perspective view showing more specifically the working state shown in FIG. 4, and FIG. 6 is a block diagram showing a preferred embodiment of the present invention. be. = 14- 10... Acceleration sensor for vibration detection 14... Bandpass filter 16... Comparator 18... Timer 20... CPU 32.32A... Display device 40... Analysis device 50...・Central control room 80
... Microphone 82 ... Work monitor analysis device T ... Inside the mine = 15-U group

Claims (3)

[Claims] (1) A vibration detection sensor is installed at the work site in the mine, and the sensor detects vibrations generated in various working parts in the hole,
An underground work situation characterized by data-analyzing detected vibrations into characteristic value patterns specific to various types of underground work using an analysis device, and transmitting predetermined control signals to various work sites based on the results of the data analysis. management method. (2) A vibration detection sensor installed at the work site in the mine, data-analyzes the detected vibration into characteristic value patterns specific to each work, and sends various predetermined control signals based on the data analysis results. 1. An underground work status management device comprising: a monitor device that outputs to a work site; and a line that transmits various signals and information between the sensor, the analysis device, and the work site. (3) A tunnel in which noise collectors are installed at appropriate locations in the working section of the tunnel to collect the noise generated from various operations within the tunnel, which is analyzed through a sound level meter into characteristic value patterns specific to each operation. 2. The method of managing underground work conditions according to claim 1, which is combined with a method of monitoring work conditions of underground work processes.