JP2010242361A - Water level measurement system in sewer pipes - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water-level measuring system in a sewer culvert for preventing a disaster to workmen engaging in maintenance and inspection work in a sewer culvert, caused by a large amount of rain water in torrential rain flowing into the sewer culvert laid in an urban area due to an unpredicted sudden change in the weather. <P>SOLUTION: A water level prediction server 7 receives water level measurement data transmitted from a water level measuring device 4 which measures the water level in the sewer culvert 5 of a manhole 2. On the basis of the water level data, the water level prediction server 7, while referencing to weather forecast, rainfall information, past rainfall in the region concerned and water level raise-data in the sewer culvert 5, predicts the amount of rise in the water level in the culvert, determines the level, and transmits the result of the determination to a site information terminal 10 carried by a person in charge on the ground. The site information terminal 10 issues an alert in case of danger. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a work safety support system in a sewer pipe for safely carrying out work in a sewer pipe buried underground, and in particular, acquires and analyzes water level rise information throughout the sewer pipe. By doing so, safety measures are established and work safety is related to the support system.

Conventionally, a valve information management system for detecting information specific to valves and fluid information passing through the valves is related to a valve information device for managing information of valves used in water pipes and the like buried underground. An apparatus is disclosed in Patent Document 1.
On the other hand, the management and maintenance of the sewer pipes widely installed in urban areas and various devices provided in the pipes have been conventionally performed by workers directly entering the pipes. However, recently, during work inside the pipe, there has been a disaster in which sudden rainwater enters the sewer pipe due to torrential rain, and workers in the pipe are washed away.
As a result of such accidents and disasters, there are increasing demands in various parts of the world for building a pipe water level measurement system that can predict the rise in water level in sewer pipes.

JP 2005-135227 A

  In response to the request for the construction of a safety support system for work in the sewer pipe as described above, even if the technique disclosed in Patent Document 1 is applied, this technique uses valves and valves at one observation point in the pipeline. It is not possible to detect the rise of the water level in the pipe at all the positions of workers scattered and working in the pipe, and it is difficult to cope with the above request. There is a problem that there is.

  The present invention has been made to solve the above-described problems, and provides a water level measurement system in a sewer pipe that makes it possible to ensure the safety of workers entering the sewer pipe by predicting a rise in the water level. The purpose is to provide.

  The water level measuring system in the sewer pipe according to the first invention includes a water level measuring device that is disposed in a plurality of manholes in the sewer pipe installed in a predetermined area and measures the water level in the sewer pipe. The water level prediction server that receives the water level data measured by the water level measurement device is provided with a weather forecast and rainfall information based on the water level data. In addition, by referring to the past rainfall in the predetermined area and the water level rise data in the sewer pipe at that time, the water level rise at the predetermined time in the sewer pipe is predicted, and this water level rise The determination according to the level of the quantity is executed and the determination result is transmitted to the field information terminal, and the field information terminal issues an alarm based on the determination result.

  The water level measuring system in the sewer pipe according to the second invention is arranged in each of a plurality of manholes in the sewer pipe installed in a predetermined area, and measures the water level in the sewer pipe And each of the distances from a predetermined reference position provided in the sewer pipe as point information, a plurality of RFID tags that record the respective point information, a mobile terminal that moves in the sewer pipe, An on-site information terminal and a water level prediction server arranged at a predetermined position on the ground are provided, and the water level prediction server that receives the water level data measured by the water level measuring device is based on the water level data and provides weather forecasts, rainfall information, and With reference to the past rainfall in a predetermined area and the water level rise data in the sewer pipe at that time, the water level rise at a predetermined time in the sewer pipe is predicted. In addition, the determination according to the level of the water level rise is performed, the determination result is transmitted to the field information terminal, and when the mobile terminal is in the vicinity of the RFID tag, the mobile terminal reads the spot information of the RFID tag. Position information from a predetermined reference position of the mobile terminal is transmitted to the site information terminal, and the site information terminal includes a plurality of manholes on a pipeline diagram showing evacuable manhole positions on the route map. The location information is displayed, and the site information terminal issues an alarm based on the determination result, and also transmits the pipeline diagram displaying the location information of the mobile terminal to the mobile terminal, so that the pipeline is also displayed on the mobile terminal. Is displayed.

According to the first aspect of the present invention, when the water level measurement system in the sewer pipe is adopted and the work in the sewer pipe is performed, the operator is predicted during the maintenance, inspection, etc. in the sewer pipe. Even if a large amount of rainwater flows into the sewer pipe due to unforeseen sudden weather changes or unexpected torrential rain, there is a risk that the workers in the sewer pipe may be injured in advance. It is possible to make a decision on evacuation from the pipe to the ground, and it is possible to provide a better safety support system for sewer pipe work.
According to the second invention, when there is a risk that the worker in the sewer pipe has a disaster, in addition to the effect of the first invention, for example, the worker in the sewer pipe from the ground site information terminal Information indicating the worker's current position can be sent to the mobile terminal possessed by the pipeline map that displays the evacuable manhole position, so even if there is an abnormal increase in the sewerage pipe due to a sudden change in the work environment. There is an effect that it is possible to provide a safe work support system that prevents a worker's disaster.

It is a figure which shows the water level measurement system in the sewer pipe of Embodiment 1. FIG. FIG. 3 is a conduit diagram showing a manhole position in the first embodiment. 2 is a block diagram showing a configuration of a field information terminal according to Embodiment 1. FIG. It is a block diagram which shows the structure of the water level measuring apparatus of Embodiment 1. FIG. It is a block diagram which shows the structure of the water level prediction server of Embodiment 1. It is a figure which shows the water level measurement system in the sewer pipe of Embodiment 2. FIG. 6 is a block diagram showing manhole positions in the second embodiment. FIG. 6 is a block diagram illustrating a configuration of an RFID tag according to Embodiment 2. FIG. 6 is a block diagram illustrating a configuration of a field information terminal according to Embodiment 2. FIG. 6 is a block diagram illustrating a configuration of a mobile terminal according to Embodiment 2. FIG.

Embodiment 1 FIG.
Embodiment 1 of the present invention will be described below with reference to FIGS.
FIG. 1 shows a position where a person in charge of ground (hereinafter abbreviated as a responsible person) resides in a sewer pipe when the water level measurement system 100 in the sewer pipe according to the first embodiment is used. It is a figure which shows the outline | summary of the position of a worker (henceforth an operator hereafter), and the information acquisition component in a tube.
As will be described later with reference to FIG. 2, a water level measuring device 4 is installed in an inner tube of a plurality of manholes and a manhole 2a for measuring the water level as shown in FIG. The water level information transmitted by the water level measuring device 4 is transmitted via the network 6 to the water level prediction server 7 and the site information terminal 10 owned by the person in charge. As shown in FIG. 2, the positional relationship between the manhole 2 where the person in charge is located, the manhole 2a where the water level measuring device 4 for measuring the water level in the sewer pipe 5 is installed, the manhole 2b where the water level is not measured, etc. Can be displayed on the site information terminal 10 owned by the person in charge. In addition, the water level measuring device 4 is normally installed in the manhole 2a on the upstream side with respect to the flow of sewerage from the manhole 2 where the person in charge resides.

  FIG. 3 is a block diagram showing an internal configuration of the site information terminal 10, which includes a display unit 11, an operation unit 12, a control circuit 13, a network interface 14, a storage device 15, and an output unit 16. The control circuit 13 performs overall control of the on-site information terminal 10, and from the water level prediction server 7 via the network 6 based on the identification information of the water level measuring device 4 installed in the manhole 2a that performs water level measurement described in detail later. The water level prediction judgment result transmitted is received and stored in the storage device 15 in the water level measurement manhole 2a on the pipeline 50 shown in FIG. ing. The display unit 11 has a function of displaying the water level prediction determination result on the pipeline 50 stored in the storage device 15 and a function of sounding an alarm sound from the output unit 16 when the water level prediction determination result reaches a dangerous area. ing. The operation unit 12 is a button key, which is a means for starting operation of monitoring the inside of the tube 5 by the person in charge obtaining the information in the tube.

  FIG. 4 is a block diagram showing an internal configuration of the water level measuring device 4. This configuration includes a sensor information acquisition unit 41, a control circuit 42, a network interface 43, and a memory 44. The control circuit 42 is realized by a CPU, and has a function in which the sensor information acquisition unit 41 writes and commands the water level data of the manhole acquired by a water level sensor of an ultrasonic sensor (not shown) to the memory 44 together with the elapsed time. The memory 44 is composed of a writable RAM, and stores the water level data transmitted from the sensor information acquisition unit 41 together with the elapsed time. In writing, information transmitted from the sensor information acquisition unit 41 is written at regular intervals. The network interface 43 transmits / receives the water level data in the memory 44 to / from the field information terminal 10 that is the transmission source having the acquisition request, the water level prediction server 7 and the like via the optimal network 6 at the installation location such as a wireless LAN or FOMA.

  FIG. 5 is a block diagram showing the internal configuration of the water level prediction server 7. The configuration includes a control circuit 71, a data analysis unit 72, a network interface 73, and a storage device 74. The control circuit 71 is realized by a CPU and performs overall control of the water level prediction server 7. The network interface 73 transmits / receives data to / from an external system, and includes water level data transmitted from the water level measuring device 4, meteorological data transmitted by the Japan Meteorological Agency, rainfall information transmitted by the rainfall radar device owned by the local government, and the like. Receive. The control circuit 71 has a function of instructing the storage device 74 to write the water level data received by the network interface 73, the weather data described above, and the rainfall information together with the elapsed time. Based on the water level data stored in the storage device 74, the data analysis unit 72 provides weather forecast data transmitted by the Japan Meteorological Agency, rainfall information transmitted by the rainfall radar device held by the local government, and the sewer pipe 5 that the storage device 74 stores. Analyzes are made by combining past rainwater volume in the surrounding area and water level rise data in the pipes, etc., and water level rise prediction judgment at the manhole position at the current work place is performed in three stages, safety zone, caution zone, and danger zone. . The obtained water level prediction determination result is transmitted to the site information terminal 10 via the network interface 73 and the network 76.

  Next, the operation | movement at the time of implementation of the operation | work in a sewer pipe is demonstrated using the water level measurement system 100 in this sewer pipe. Before starting the work, as shown in FIG. 2, the water level measuring device 4 shown in FIG. 1 is installed in the vicinity of the confluence of the pipe culvert, the steep slope of the pipe culvert not shown, or the like. The water level prediction server 7 installed in the local government, the work charge company or the like requests the water level measuring device 4 to transmit the measured water level data at a predetermined time interval via the network 6. Upon receiving this signal, the water level measuring device 4 returns the water level data stored in the memory 44 to the water level prediction server 7 via the network 6. Based on the transmitted water level data, the water level prediction server 7 refers to the weather forecast data for forecasting torrential rains by the Japan Meteorological Agency and the rainfall information transmitted by the rainfall radar device held by the local government, etc. Analyzing the past rain water volume in the area around the sewer pipe basin 5 and the water level rise data at the manhole in the pipe basin, etc., and making a judgment on the water level rise prediction of the current work basin during the working time . This determination result is transmitted via the network 6 to the site information terminal 10 owned by the person in charge. On the display unit 11 of the site information terminal 10, the water level prediction judgment result is displayed in the manhole 2a on the pipeline 50 of FIG. 2, and the display is a level for the operator to continue working, for example, safety, Cautions and dangers are displayed in green, orange, and red. In the case of caution and danger, the output unit 16 outputs an alarm sound peculiar to each, for example, an alarm sound such as a short intermittent sound or a long continuous high sound. As a result, the person in charge can confirm the safety of the work in the pipe 5 and can send out appropriate information of the worker in the pipe 5 and suddenly flow into the sewer pipe due to heavy rain. It is possible to provide a work safety support system for sewer pipes that can handle rainwater safely. In place of the alarm sound output from the output unit 16, a red flashing lamp may be provided in the output unit 16 so as to make it flash. Moreover, although the example which provides a water level measuring apparatus in a manhole was shown, you may provide in the high place of a pipe wall.

Embodiment 2. FIG.
The second embodiment will be described with reference to FIGS.
FIG. 6 shows the position of the person in charge when the water level measurement system 100 in the sewer pipe according to the second embodiment is used, the position of the worker in the sewer pipe 5, and the components for acquiring the in-pipe information. The RFID tag 8 is installed at a predetermined location in the sewer pipe 5 in FIG. 1 of the first embodiment described above, and the operator owns the mobile terminal 9, and the mobile terminal 9 1 is the same as FIG. 1 except that the site information terminal 10 owned by the person in charge is connected to the site information terminal 10 by a wired line such as the LAN cable 30 and the description thereof is omitted. The wired LAN cable 30 also serves as a lifeline when an abnormality occurs.
FIG. 7 shows that a plurality of manholes 2c-1 and 2c-2 are manholes where workers can evacuate when the water level in the pipe rises, and manholes 2d-1 to 2d-3 are evacuated. It is a pipeline diagram 50a showing an impossible manhole, and this pipeline diagram 50a is displayed on the site information terminal 10 of the person in charge and the mobile terminal 9 of the worker.

Reference is made in detail to FIG.
On the wall surface of the sewer pipe 5, each distance is recorded from the point of the manhole 2 where the responsible person at the predetermined reference position is stationed, that is, a plurality of RFID tags 8 in which the respective position information is recorded are described above. It is arranged as point information for each distance. When the mobile terminal 9 possessed by the worker passes through the vicinity of the RFID tag 8, the point information possessed by the RFID tag 8 is acquired and becomes position information of the worker in the sewer pipe. The field work terminal 10 possessed by the person in charge is connected to the mobile terminal 9 possessed by the worker in the tube 5 by wire such as a LAN cable 30. From the position information transmitted by the mobile terminal 9, it is possible to display the position WP of the worker in FIG. 7 to be described later on the pipeline 50a on the display unit 10a. Further, since the same display can be performed on the mobile terminal 9 of the worker, the worker himself / herself can also confirm his / her position in the tube 5.
FIG. 7 shows the manhole 2 where the person in charge resides, the manholes 2, 2 c-1, 2 c-2 where the worker can evacuate when an abnormality occurs, the manholes 2 d-1 to 2 d-3 where the worker cannot evacuate, and the position WP of the worker Is a pipeline diagram 50a shown on the sewer pipeline 5 and the pipeline diagram 50a is displayed on the terminal as described above.

  FIG. 8 is a block diagram showing the internal configuration of the RFID tag 8. The RFID tag 8 includes a transmission / reception antenna 81, a transmission / reception circuit 82, a control circuit 83, and a memory 84. The control circuit 83 performs overall control of the RFID tag 8. The memory 84 records the distance at which the RFID is arranged from the point of the manhole 2 where the responsible person is stationed as a reference point. The transmission / reception circuit 82 returns the distance from the manhole 2 according to the information request signal received by the transmission / reception antenna 81. The transmitting / receiving antenna 81 has a function of receiving an information request signal from the distance guiding terminal 9 and transmitting the distance from the manhole point, that is, the distance between the worker and the manhole 2 to the mobile terminal 9.

  FIG. 9 is a block diagram showing the internal configuration of the site information terminal 10a. The field information terminal 10a has the same configuration as the field information terminal 10 shown in the first embodiment, but the following functions are added to the display unit 11a, the control circuit 13a, and the storage device 15a. That is, the storage device 15a also stores drawing data of the pipeline diagram 50a shown in FIG. From the information acquired from the mobile terminal 9 and the manhole position data stored in the storage device 15a, the control circuit 13a determines the distance between the mobile terminal 9, that is, the worker and the evacuable manholes 2, 2c-1, 2c-2. Calculate. The display unit 11a has a function of displaying the drawing data of the pipeline diagram 50a stored in the storage device 15a, the position WP of the worker, and the positions of the evacuable manholes 2, 2c-1, 2c-2. Other components are the same as those in the first embodiment, and a description thereof will be omitted.

  FIG. 10 is a block diagram showing the internal configuration of the mobile terminal 9. A display unit 91, an operation unit 92, a control circuit 93, a storage device 94, and a transmission / reception antenna 95 are provided. The storage device 94 holds the data of the circuit diagram 50a shown in FIG. 7 and the position data of the manholes 2, 2c-1, 2c-2, 2d-1 to 2d-3. The control circuit 93 performs overall control of the mobile terminal 9. The transmission / reception antenna 95 has a function of periodically reading the RFID tag 8, reading the distance from the RFID tag, that is, the distance from the operator's position to the manhole 2 where the responsible person is stationed, and transmitting the distance to the control circuit 93. . The control circuit 93 calculates the position of the worker from the distance from the manhole 2 received by the transmission / reception antenna 95 and the manhole position data held by the storage device 94. The display unit 93 displays the data of the pipeline 50a and the manhole position data held by the storage device 94, the position WP of the worker in the pipeline 50a, and the positions of the evacuable manholes 2, 2c-1 and 2c-2. It has a function to do. The operation unit 92 is a button key, and is an operation means for an operator to make a reception response to the evacuation instruction to the site information terminal 10a.

Next, the operation | movement at the time of the work implementation in the sewer pipe using the water level measurement system 100 in the sewer pipe by this Embodiment 2 is demonstrated.
When the worker starts work, a plurality of RFID tags 8 each recording the distance from the point of the manhole 2, which is a predetermined position where the responsible person is stationed, are installed on the wall of the sewer pipe 5 for each distance. . The worker carries out the work in the pipe equipped with the mobile terminal 9 connected by the wire 30 to the site information terminal 10 possessed by the person in charge. When the worker passes near the RFID tag 8, the mobile terminal 9 reads the position information of the RFID tag 8 and transmits the position information of the worker to the site information terminal 10 possessed by the person in charge. Although the operator has passed, the position information can be read if the mobile terminal 9 is in the vicinity of the RFID tag 8. The site information terminal 10 displays the data of the pipeline 50a on the display unit 11a, and manholes 2, 2c-1, 2c-2 and an evacuation failure that can condemn the position of the worker from the position information transmitted from the mobile terminal 9. The positions of possible manholes 2d-1 to 2d-3 are displayed together. The mobile terminal 9 also displays the same on the display unit 11a.
Since the display as described above is performed on the field information terminal 10 and the mobile terminal 9, the pipe water level prediction judgment result that the rainwater suddenly enters into the pipe due to the heavy rain as described in the first embodiment. When the person in charge receives information on the caution area or the dangerous area at the site information terminal 10, the site information terminal 10 issues an evacuation instruction to the mobile terminal 9 possessed by the worker, and the worker who has received the evacuation instruction By pressing a button key on the operation unit 92 of the mobile terminal 9, the information is displayed on the display unit 11a of the site information terminal 10, and the person in charge can confirm that the worker has received the evacuation instruction. On the other hand, the worker can evacuate to a manhole that can be evacuated from the position information displayed on the mobile terminal 9, and there is an effect that safety of work in the sewer pipe can be secured.

  The present invention can be used in a system that provides safety support during maintenance inspection work in a sewer pipe.

2 Resident manhole 2c-1, 2c-2 Evacuated manhole,
4 water level measuring device, 5 sewer pipe, 6 network, 7 water level prediction server,
8 RFID tag, 9 Mobile terminal, 10, 10a Field information terminal,
30 LAN cable, 50, 50a Pipeline diagram,
100 Water level measurement system in sewer pipes.

Claims (5)

A water level measuring system in a sewer pipe, wherein the water level measuring system in the sewer pipe is arranged in a plurality of manholes in a sewer pipe installed in a predetermined area, and the water level in the sewer pipe A water level measurement device for measuring water level, a field information terminal arranged at a predetermined position on the ground, and a water level prediction server, and the water level prediction server for receiving water level data measured by the water level measurement device is Based on the data, the water level at a predetermined time in the sewer pipe is referred to by referring to the weather forecast, the rainfall information, the past rainfall in the predetermined area and the water level rise data in the sewer pipe at that time. The amount of increase is predicted, the determination according to the level of the water level increase is executed, and the determination result is transmitted to the site information terminal. Water level measurement system in sewer sewer, characterized in that for issuing an alarm based. A water level measurement system in a sewer pipe, wherein the water level measurement system in the sewer pipe is disposed in each of a plurality of manholes in a sewer pipe installed in a predetermined area. A water level measuring device for measuring the water level, each of the distances from a predetermined reference position provided in the sewer pipe as point information, a plurality of RFID tags recording the respective point information, and the sewer pipe Mobile terminal, a field information terminal and a water level prediction server arranged at a predetermined position on the ground,
The water level prediction server that receives the water level data measured by the water level measuring device, based on the water level data, the weather forecast and the rainfall information, the past rainfall amount in the predetermined area and the current sewer pipe in the sewer pipe With reference to the water level rise data, the water level rise amount at a predetermined time in the sewer pipe is predicted, a determination according to the level of the water level rise amount is executed, and the determination result is sent to the field information terminal. To
When the mobile terminal is in the vicinity of the RFID tag, the mobile terminal reads the location information of the RFID tag, so that the location information of the mobile terminal from the predetermined reference position is transmitted to the site information terminal, and the site information The information terminal displays the position information of the mobile terminal on a pipeline map showing the evacuable manhole position among the plurality of manholes, and the site information terminal issues an alarm based on the determination result In addition, by transmitting a pipeline diagram in which the location information of the mobile terminal is displayed to the mobile terminal, the pipeline diagram is also displayed on the mobile terminal. system. The said water level measuring device is installed in the manhole near the confluence | merging point of a pipe culvert, or the steep slope point, The sewer pipe | tube in any one of Claim 1 or Claim 2 characterized by the above-mentioned. Water level measurement system. The water level measurement system in the sewer pipe according to any one of claims 1 and 2, wherein the alarm issued by the site information terminal is sound or blinking of a lamp. The water level measurement system in a sewer pipe according to claim 2, wherein the site information terminal and the mobile terminal are connected by a wired cable.

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