JP5518774B2 - Release alarm relay system - Google Patents

Description

  The present invention relates to a system comprising a plurality of discharge alarm devices capable of confirming that an alarm sound for calling attention at the time of dam discharge reaches the most downstream.

  There is a discharge warning device that informs people who are downstream of the dam about the danger of rising river water level by voice before discharging from the dam provided in the river. In order to transmit information over a wide area with such a device, it is necessary to install a number of slave stations in the downstream area of the dam so that the sound can reach the entire river basin. In general, communication is performed from a master station in a dam to each slave station downstream by a wired system using cables or a radio system using radio waves, and each slave station controls each alarm device. Alarm sound. At this time, whether or not the alarm device is operating normally is confirmed by whether or not an alarm sound is actually sounding.

  In relation to this, Patent Document 1 discloses a “slave station operation confirmation method” in which an operation confirmation signal is transmitted from the slave station to the master station at the start and end of the operation. Further, in Patent Document 2, the surrounding environment information is received by a plurality of sensors installed within the sound range of the alarm device, and the directional sounding horn is directed to a portion where the alarm sound is expected not to be delivered. Discharge alarm transmission program, discharge alarm device, and discharge alarm transmission method "are disclosed.

JP 61-224532 A JP 2006-72767 A

However, the conventional methods according to the above documents have the following problems.
(1) It is possible to confirm that the alarm sound is sounding, but it is not possible to confirm whether the sound has reached the entire river. That is, it does not confirm whether it reaches the most downstream.
(2) Even if it has reached the whole area in the sound test at the time of the new construction, it is detected when the flow of the river and the surrounding environment have changed and the volume of noise has increased and the sound has stopped reaching. I can't.
(3) A cable or a radio station must be installed between the master station and the slave stations, which is expensive.
(4) To establish a new cable or radio station, it is necessary to apply for river occupancy or open a radio station. This takes time and effort, and may not be installed in some cases.
(5) Installation of cables and radio stations may be difficult depending on conditions such as cliffs and rivers.

  This invention is made | formed in view of the said subject, The main objective is transmitting a discharge warning with respect to the downstream area of a dam, suppressing installation of communication equipment.

In order to solve the above-mentioned problem, the present invention is a discharge alarm relay system, which is installed in or near a dam, and transmits a warning sound for calling attention when discharging the dam, From the first alarm device toward the downstream of the dam, it is installed sequentially within the reach of the alarm sound transmitted by the upstream alarm device, and when the alarm sound is received from the upstream, the alarm sound is transmitted downstream A plurality of second alarm devices, and among the second alarm devices, when the most downstream alarm device which is the second alarm device installed on the most downstream side receives the alarm sound, While transmitting an alarm sound, the device transmits to the first alarm device information indicating that the device has transmitted the alarm sound, and among the second alarm devices, the first alarm device and the most downstream alarm Second installed in the middle of the device When the intermediate alarm device, which is an alarm device, receives the alarm sound, the alarm device transmits the alarm sound downstream and transmits the sounding information to the first alarm device. When the blowing information is received from the downstream alarm device, the fact that the warning sound is transmitted at the most downstream is output, and when the blowing information is received from the intermediate alarm device, the alarm sound is transmitted in the middle to output the wherein the Rukoto.

According to this configuration, the dam or the first alarm device in the vicinity of the dam or the dam to which the alarm needs to be transmitted can be transmitted to the downstream area of the dam in order to transmit the warning to the river basin when the dam is discharged. Alarm sound is relayed sequentially between a plurality of second alarm devices installed over the downstream area. Each alarm device is sequentially installed at an interval of a distance at which an alarm sound from an alarm device upstream one reaches or at a shorter distance. According to this, since the alarm sound is sequentially relayed between the alarm devices, the alarm sound can be transmitted to the most downstream side without providing a communication facility for each alarm device. According to the above, since the second alarm device in the middle does not need to perform data communication, it is possible to reduce labor and cost for installing communication equipment such as a cable and a radio station. In other words, even if it is difficult to install communication equipment, the second alarm device can be installed as long as the alarm sound can be reached.
Further, the second alarm device at the most downstream side transmits sounding information indicating that an alarm sound has been transmitted to the first alarm device, and the first alarm device receives the sounding information and outputs the alarm sound at the most downstream side. Outputs that the call has been sent. According to this, the transmission of the alarm sound in the most downstream can be confirmed by the first alarm device in the dam or the vicinity thereof. On the other hand, if the first alarm device cannot receive the blowing information, it can be immediately understood that the alarm sound has not reached the most downstream side, so that it is possible to respond quickly to a failure. According to the above, since it is only necessary to perform data communication between the first alarm device and the second alarm device at the most downstream side, labor and cost for installing communication equipment can be reduced. And every time the dam is discharged, it can be confirmed that the alarm sound has reached the alarm device at the most downstream side, so that the discharge alarm can be transmitted reliably.
In addition, since the first alarm device receives and outputs the ringing information from the second alarm device in the middle of the downstream area of the dam that needs to transmit the alarm sound, check whether the alarm sound has reached the middle can do. And, for example, even when an alarm sound is transmitted from the first alarm device, when the blowing information cannot be received from the most downstream, the warning sound is transmitted to the most downstream depending on whether or not the blowing information has been received from the middle. It is possible to identify whether the failure factor that does not reach is between the middle and the most downstream or between the dam and the middle.
According to this, it becomes easy to specify a failure point by increasing the number of intermediate alarm devices that transmit the blowing information to the first alarm device. However, since a communication facility that enables data communication between the first alarm device and the intermediate alarm device is required, it is a trade-off whether it is easy to identify the failure point or reduce the installation cost of the communication facility. Become a relationship.

  Moreover, in the discharge alarm relay system according to the present invention, the second alarm device determines whether the alarm sound is received or not, from among the sounds received from the outside, a sound in a predetermined frequency band is equal to or higher than a predetermined level. It may be determined based on whether or not the state has continued for a predetermined time or more.

  According to this configuration, for example, the second alarm device recognizes a specific frequency band, level, or duration sound that does not exist in nature as an alarm sound, and distinguishes ambient noise from the alarm sound. The alarm sound can be reliably relayed without reacting to noise.

  In the discharge alarm relay system according to the present invention, the first alarm device may transmit the alarm information only for a time obtained by multiplying the predetermined number of times by the number of the second alarm devices after transmitting the alarm sound. It is good also as waiting for reception.

  According to this configuration, the first alarm device uses the total time for monitoring the continuation of the alarm sound in each second alarm device as a guide for the response waiting time of the blowing information, so that the total time has elapsed. However, if the blowing information cannot be received, it can be determined that the alarm sound has not reached the most downstream side.

  In addition, the problems disclosed by the present application and the solutions thereof will be clarified by the description of the mode for carrying out the invention and the drawings.

  According to the present invention, it is possible to transmit a discharge warning to the downstream area of the dam while suppressing the installation of communication facilities.

It is a figure which shows the structure of the discharge warning relay system. 2 is a diagram showing a hardware configuration of a master station 2. FIG. 2 is a diagram illustrating a hardware configuration of a slave station 3. FIG. (A) shows the configuration of the master station data 26A stored in the storage unit 26 of the master station 2, and (b) shows the configuration of the slave station data 36A stored in the storage unit 36 of the slave station 3. It is a flowchart which shows the process of the discharge warning relay system.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. The discharge alarm relay system according to the embodiment of the present invention uses an alarm sound itself as a control signal between a dam or a master station in the vicinity thereof and a plurality of slave stations in the downstream area of the dam. In this case, when a master station or a slave station rings in the upstream, it sounds when a slave station on one downstream side detects the alarm sound. After detecting and sounding the alarm sound by the slave station in order toward the downstream of the dam, the slave station at the most downstream side rings, and blowing information indicating that is transmitted to the master station. The master station receives and outputs the sound information.

  According to this, it is possible to confirm whether or not the alarm sound has reached the most downstream without having to install a cable or a radio station for each slave station.

≪System configuration and overview≫
FIG. 1 is a diagram illustrating a configuration of a discharge alarm relay system 1. The discharge alarm relay system 1 is a system in which a master station 2 and a plurality of slave stations 3 are installed as a discharge alarm device over a basin of a dam 6 and a river 7 downstream thereof. The master station 2 is installed at or near the dam 6 and an alarm sound to call attention to the increase of the river 7 due to the discharge according to the operator's instruction before the water discharge of the dam lake 5 is performed. To send. And it waits for reception of the blowing information which shows that the own station transmitted the alarm sound from the slave station 3d installed in the most downstream, and displays according to reception or non-reception. The master station 2 and the slave station 3d can communicate with each other via a wired or wireless communication line 4.

  The slave station 3 is located along the river 7 upstream of its own station, and the sound range (for example, the master station 2 for the most upstream slave station 3 and the other slave stations 3 for other upstream stations) , Approximately 200 to 300 m). Depending on the length of the basin of the river 7, for example, 20 or more may be installed. Then, when an alarm sound is received from another station upstream of the own station and the state where the pilot signal included in the alarm sound is at a predetermined level or more continues for a predetermined time or longer, the alarm sound is sent from the own station toward the downstream. To send. In particular, the slave station 3d installed on the most downstream side transmits the alarm information to the master station 2 via the communication line 4 after transmitting an alarm sound. As the pilot signal, an audio signal in a specific frequency band that is different from the natural noise in the frequency included in the alarm sound that is actually transmitted is extracted. In addition, the slave stations 3 do not necessarily have to be along the river 7 and may be installed in a distributed manner so that the alarm sound can be transmitted without omission to the necessary area.

  FIG. 2 is a diagram illustrating a hardware configuration of the master station 2. The master station 2 includes a communication unit 21, a display unit 22, an input unit 23, an audio output unit 24, a processing unit 25, and a storage unit 26, and is configured such that each unit can transmit and receive data via a bus 27. The communication unit 21 is a part that performs IP (Internet Protocol) communication or the like with the slave station 3d via the communication line 4, and is realized by, for example, a NIC (Network Interface Card) or the like. The display unit 22 is a part that displays data according to an instruction from the processing unit 25, and is realized by, for example, a liquid crystal display (LCD). The input unit 23 is realized by an operation button for an operator to instruct a discharge alarm, but may be a keyboard, a mouse, a touch panel, or the like instead of the operation button. The audio output unit 24 is a part that transmits an alarm sound downstream from its own station according to an instruction from the processing unit 25, and is realized by, for example, a speaker. The processing unit 25 exchanges data between each unit via a predetermined memory and controls the entire master station 2. The CPU (Central Processing Unit) stores a program stored in the predetermined memory. It is realized by executing. The storage unit 26 stores data from the processing unit 25 and reads the stored data, and is realized by a nonvolatile storage device such as an HDD (Hard Disk Drive) or an SSD (Solid State Drive). The

  FIG. 3 is a diagram illustrating a hardware configuration of the slave station 3. The slave station 3 includes a communication unit 31, an audio input unit 32, a filter 33, an audio output unit 34, a processing unit 35, and a storage unit 36, and is configured so that each unit can transmit and receive data via a bus 37. The communication unit 31 is provided only in the slave station 3d located on the most downstream side and performs IP communication or the like with the master station 2 via the communication line 4, and is realized by, for example, a NIC. The voice input unit 32 is a part that acquires an alarm sound from another station, and is realized by, for example, a sound collecting microphone or the like facing upstream. The filter 33 is a frequency filter that extracts a frequency in a specific band as a pilot signal from the alarm sound acquired by the voice input unit 32, and is realized by, for example, a filter circuit. The audio output unit 34 is a part that emits an alarm sound downstream from its own station according to an instruction from the processing unit 35, and is realized by, for example, a speaker. The processing unit 35 delivers data between the units via a predetermined memory and controls the entire slave station 3. The processing unit 35 is realized by the CPU executing a program stored in the predetermined memory. Is done. The storage unit 36 stores data from the processing unit 35 and reads the stored data, and is realized by, for example, a nonvolatile storage device such as an HDD or an SSD.

<< Data structure >>
FIG. 4A shows the configuration of the master station data 26 </ b> A stored in the storage unit 26 of the master station 2. The master station data 26A includes a response waiting maximum time 26A1. The response waiting maximum time 26A1 is the maximum time to wait for the reception of the blowing information from the slave station 3d after the master station 2 transmits an alarm sound.

  FIG. 4B shows the configuration of the slave station data 36 </ b> A stored in the storage unit 36 of the slave station 3. The slave station data 36A includes a specific signal level threshold 36A1 and a specific signal time threshold 36A2. The specific signal level threshold value 36A1 is a lower limit value of the amplitude level of the pilot signal determined as an alarm sound. The specific signal time threshold value 36A2 is a lower limit value of the duration time of the pilot signal determined as an alarm sound. In the slave station 3, an alarm sound is generated when a sound having a level equal to or higher than the specific signal level threshold 36A1 continues for the specific signal time threshold 36A2. The specific signal time threshold value 36A2 is set to, for example, 30 seconds as a length of time that is not possible in nature, but this time is a waiting time when relaying an alarm sound between the slave stations 3. It is desirable to make it as short as possible.

≪System processing≫
FIG. 5 is a flowchart showing processing of the discharge alarm relay system 1. In this process, the master station 2 and the slave stations 3a to 3d relay alarm sounds sequentially like a relay, and confirm that they have reached the most downstream, thereby reliably transmitting the discharge alarm to the river 7 basin. Is.

  First, the master station 2 determines whether or not a release warning instruction has been received from the operator through the input unit 23 (S501). If there is no warning instruction (N in S501), the determination in S501 is repeated. If there is an alarm instruction (Y in S501), the audio output unit 24 transmits an alarm sound toward the downstream of the dam 6 for about one minute (S502). Since the alarm sound reaches the sound range from the master station 2, a person within the sound range hears it and the slave station 3 a installed downstream from the master station 2 receives it.

  Then, the master station 2 waits for a response waiting maximum time 26A1 from the time of starting the transmission of the alarm sound (S503). According to FIG. 1, since the alarm sound is transmitted and received four times from the master station 2 to the most downstream slave station 3d, if the duration of the pilot signal monitored by the slave station 3 is 30 seconds, 4 × 30 = 120 [seconds] or a time added with a margin is set as the response waiting maximum time 26A1.

  The slave station 3a installed immediately downstream of the master station 2 first determines whether or not an alarm sound has been received by the voice input unit 32 (S504). If not received (N in S504), the determination in S504 is repeated. If received (Y in S504), the state where the amplitude level of the pilot signal extracted from the received alarm sound by the filter 33 is equal to or higher than the specific signal level threshold 36A1 is the specific signal time threshold 36A2 (for example, 30 It is determined whether or not it has continued for a time longer than (second) (S505).

  If the pilot signal meets the above conditions (Y in S505), the slave station 3a recognizes that it is ringing on the upstream side, and continues for about one minute toward the downstream of its own station by the audio output unit 34. An alarm sound is transmitted (S506), and the process returns to the determination in S504. Since the alarm sound reaches the sound range from the slave station 3a, a person in the sound range hears it and the slave station 3b installed downstream of the slave station 3a receives it. If the pilot signal does not meet the above conditions (N in S505), the process of S506 is skipped and the process returns to the determination of S504. By performing the determination in S505, it is possible to determine whether the sound received by the voice input unit 32 is an alarm sound or other noise, and it is possible to prevent a false alarm due to a malfunction.

  In the slave stations 3b and 3c, the same processing as S504 to S506 is performed. The slave station 3d installed on the most downstream side performs the processing of S507 to S509 similar to S504 to S506, but after sending an alarm sound toward the downstream of its own station (S509), the alarm sound is sent downstream. Is transmitted to the master station 2 by the communication unit 31 (S510). Since the alarm sound reaches the range of the sound from the slave station 3d, a person who is within the range of the sound will hear it, but since no slave station is installed downstream of the slave station 3d, No relay is performed.

  On the other hand, after waiting for a response time (S503), the master station 2 determines whether or not the blowing information has been received from the slave station 3d by the communication unit 21 (S511). If it has been received (Y in S511), “the most downstream slave station 3d has transmitted an alarm sound (normal)” is displayed on the display unit 22 (S512). If it has not been received (N in S511), “the most downstream slave station 3d is not transmitting an alarm sound (abnormal)” is displayed on the display unit 22 (S513). As a result, the operator can confirm that the release alarm has been transmitted normally if normal is displayed, and if the abnormality is displayed, the operator can see that the release alarm has been interrupted somewhere. Can take action for repair.

  In addition, although the master station 2 has been described so as to determine reception of the sounding information after waiting for the response time, there is a possibility of receiving the sounding information while waiting for the response time. You may make it perform determination of blowing information reception alternately. In addition, although it has been described that normal or abnormal is displayed on the display unit 22, as long as the operator can understand, other output means may be used, and mail may be transmitted to the portable terminal owned by the operator via a communication line. The sound may be output by voice.

  In the above embodiment, in order to make the master station 2 and each slave station 3 in the discharge alarm relay system 1 shown in FIG. 1 function, the program executed by the processing unit (CPU) can be read by a computer. It is assumed that the discharge alarm relay system 1 according to the embodiment of the present invention is realized by recording on a medium and causing the computer to read and execute the recorded program. In this case, the program may be provided to the computer via a network such as the Internet, or a semiconductor chip or the like in which the program is written may be incorporated in the computer.

  According to the embodiment of the present invention described above, it is possible to reliably transmit a discharge warning to the downstream area of the dam 6 while suppressing the installation of communication facilities.

  Specifically, as shown in S504 and S505 (S507 and S508) in FIG. 5, when the alarm sound is received at the slave station 3, the signal of the frequency in the specific band of the alarm sound exceeds a predetermined level. Since it is monitored whether or not this state continues for a predetermined time or more, it is possible to discriminate between the noise in the basin of the river 7 and the alarm sound, and to reliably recognize the alarm sound from the upstream and transmit it downstream. .

  Next, as shown in S510 and S511 to S513, the blowing information indicating that the alarm sound has been transmitted at the most downstream is transmitted from the slave station 3d, while depending on whether the master station 2 has received the blowing information. Thus, whether the alarm sound is transmitted normally or abnormally is displayed, so that the operator can check whether the alarm sound has reached the most downstream side. Then, as shown in S502 and S503, the master station 2 waits for a predetermined response time (maximum response waiting time 26A1) after issuing an alarm sound. It can be determined whether or not the station 3d has transmitted the blowing information. Note that the alarm sound reaching the most downstream means that the discharge alarm sound is transmitted to the entire downstream area of the dam 6 which may be affected by the increase in water of the river 7 or the like. .

  According to the above, it is possible to confirm whether or not the alarm sound has reached the entire range where the discharge warning is necessary in the river basin of the river 7 every time the master station 2 rings. Next, the slave station 3 is installed so that a dead zone cannot be formed. Even if a dead zone occurs as a result of changes in the basin of the river 7 and the surrounding conditions, an alarm sound is generated up to the downstream station 3d. Since the master station 2 does not reach and the master station 2 does not receive the blowing information, the occurrence of the dead zone can be immediately recognized, so that it can be dealt with immediately.

  In addition, since the installation of the cable and the radio station is only between the master station 2 and the slave station 3 on the most downstream side, the cost can be reduced, and a minimum application for private use and an application for opening a radio station are sufficient.

  Furthermore, since it is not necessary to install communication equipment such as a cable or a radio station for each slave station 3, it is possible to install the slave station 3 even in places where it is difficult to install communication equipment such as cliffs.

<< Other embodiments >>
As mentioned above, although the form for implementing this invention was demonstrated, the said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. The present invention can be changed and improved without departing from the gist thereof, and equivalents thereof are also included in the present invention.

  For example, the slave station 3b in the middle (intermediate) of the slave stations 3 and the master station 2 may be communicable. At that time, the slave station 3 b stores a slave station ID unique to the slave station 3, and transmits sounding information including the slave station ID to the master station 2. When the master station 2 receives the blowing information from the slave station 3b, the master station 2 can confirm that the alarm sound has reached the slave station 3b based on the slave station ID included in the blowing information. If each slave station 3 and the master station 2 can communicate with each other, it can be known where the master station 2 could not receive the blowing information from the most downstream slave station 3d. It takes. Therefore, it is conceivable that the slave station 3 and the master station 2 can easily communicate with each other in units of several slave stations 3.

1 Discharge alarm relay system 2 Master station (first alarm device)
3 Slave stations (second alarm device)
3b Slave station (second alarm device, intermediate alarm device)
3d slave station (second alarm device, most downstream alarm device)

Claims (3)

A first alarm device installed at or near the dam, which emits an alarm sound to call attention when the dam is discharged;
From the first alarm device toward the downstream of the dam, the alarm devices are sequentially installed within the reach of the alarm sound transmitted by the upstream alarm device, and when the alarm sound is received from the upstream, the alarm sound is transmitted downstream. A plurality of second alarm devices for transmitting;
Equipped with a,
Among the second alarm devices, the most downstream alarm device, which is the second alarm device installed at the most downstream side, emits the alarm sound downstream when receiving the alarm sound, and the device itself issues the alarm. Blowing information indicating that the sound has been transmitted is transmitted to the first alarm device,
Among the second alarm devices, an intermediate alarm device that is a second alarm device installed in the middle between the first alarm device and the most downstream alarm device receives the alarm sound downstream. While sending an alarm sound, the blowing information is transmitted to the first alarm device,
When the first alarm device receives the sound information from the most downstream alarm device, the first alarm device outputs that the alarm sound is transmitted at the most downstream, and when the sound information is received from the intermediate alarm device, discharge alarm relay system, wherein you output that it has originated the alarm sound in the middle. The discharge alarm relay system according to claim 1 ,
The second alarm device determines whether or not the alarm sound has been received based on whether or not a state in which a sound in a predetermined frequency band is equal to or higher than a predetermined level among sounds received from the outside continues for a predetermined time or more. A discharge alarm relay system characterized by The discharge alarm relay system according to claim 2 ,
The first alarm device waits for reception of the blowing information for at least the predetermined time multiplied by the number of the second alarm devices after transmitting the alarm sound. .

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