JPH0230077B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for transmitting and processing observation signals of a warning system, and in particular, is used to provide warnings, warnings, warnings, etc. for debris flows, mudflows, mudflows, etc. caused by localized heavy rains.
This paper relates to the optimal observation signal transmission and processing method for reporting emergency warning information such as evacuation orders, advisories, warnings, and evacuation orders for tsunamis caused by earthquakes to various locations in a short time. .

The following is a network for reporting advisories, warnings, evacuation orders, etc. (hereinafter referred to as warning information) regarding debris flows, mudflows, mudflows, etc. (hereinafter referred to as debris flows, etc.) caused by localized heavy rains. This will be explained using an example.

Since the occurrence of debris flows during heavy rains is extremely localized, it is not possible to use a wide-area weather information system such as the AMeDAS system to issue warning information. A regional weather information network will be constructed for each region.

Among these regional weather information networks, especially those built in areas where debris flows are likely to occur, such as mountainous areas, it is extremely important to observe localized heavy rains in the upper reaches of valleys. In the observation system, multiple observation stations are placed in the upper reaches of the valley, and a monitoring station that collects observation data from these observation stations is placed, for example, at the foot of a mountainous area, and a station that receives warning information issued from the monitoring stations is placed. The observation station and the monitoring station are connected by a wireless link in case the transmission line is destroyed due to a debris flow, etc., and the observation station and the monitoring station are connected to the alarm information. The receiving station is connected to the receiving station via a public communication line (subscription telephone line, etc.) in consideration of the flexibility of reporting and the distance between the two sides.

In the above observation system, a large number of observation stations are installed, so the installation cost of the system is greatly influenced by the cost of the above observation stations.In addition, in order to distinguish between multiple observation stations, different observation stations are usually used. Since radio lines, that is, radio waves with different carrier frequencies are used, the frequency band occupied by the radio waves becomes wide.

The present invention has been proposed to solve the above problems, and aims to provide a regional weather observation network, particularly a warning system, which is inexpensive to install and can occupy a narrow frequency band of radio waves. Note that this warning system can be introduced not only to regional weather observation networks but also to various other observation systems, such as earthquake observation systems.

For the above purpose, in the present invention, the observation station sends the observation signal output from the observation section (for example, a rain sensor) unprocessed to the monitoring station (for example, the rainfall pulse output every 1 mm of rainfall is sent in real time). ) This eliminates the need for data processing at the observation stations, and each observation station is given an identification code to identify each other, and the monitoring stations are coded with the identification code. By transmitting observation signals (e.g. coated rainfall pulse signals) and eliminating the need to identify observation stations by carrier frequency, it is possible to output observation signals from multiple observation stations over the same wireless line. That is.

Embodiments of the present invention will be described below with reference to the drawings.

The drawing is a diagram showing the configuration of a network for explaining an embodiment of the present invention.

As shown in the drawing, the observation network includes, for example, multiple observation stations A ₁ to An installed along a valley in a mountainous area, and monitoring station B installed in a remote area from observation stations A ₁ to An.
and alarm receiving station D installed at a remote location from monitoring station B, and the monitoring stations _A1 to An and monitoring station B are connected by wireless link between monitoring station B and alarm receiving station D. are connected to each other by a public communication line, and further, if necessary, the alarm transfer destination E and the alarm receiving station D are connected by a public communication line to form this network.

Observation stations A ₁ to An are, for example, a rainfall observation section 1 using a tipping cubicle rain gauge, and observation stations A ₁ to An are respectively
a code addition unit 2 that adds a unique station identification code set for each to the observation signal from the observation unit 1;
The observation unit 1 includes a transmission unit 3 for wirelessly transmitting the coded observation signal from the code addition unit 2;
A rainfall pulse signal is created for each rainfall set, for example, every 1 mm of rainfall, and the code adding section 2 is added to this rainfall pulse signal.
After adding a station identification code unique to the observation station, the transmitter 3 superimposes it on the radio wave and radiates it from the antenna 4.

In the above operation, the station identification code is added, for example, as follows. That is, observation station A ₁ ~
An is given a unique station identification code by combining two types of AC signals with different frequencies, and the code adding section 2 converts the rainfall pulse signal into a pulse signal containing the station identification code (this pulse signal is referred to as below). (referred to as a coded pulse signal).
With this configuration, multiple observation stations A ₁ to An
It is possible to transmit observation signals using radio waves with the same frequency.

In addition, as is clear from the above, each of the observation stations A ₁ to An transmits the coded pulse signal one by one in real time every time 1 mm of rainfall is observed, and the coded pulse signals are transmitted within the observation stations A ₁ to An. No processing of rainfall data, such as processing into cumulative rainfall or hourly rainfall, is performed.

Monitoring station B includes a receiving unit 12 that receives observation signals (coded pulse signals) from observation stations _A1 to An at once, and determines the station identification code in the coded pulse signal received by the receiving unit 12. A code discriminator 13 that identifies the destination observation station of the received observation signal, a data processor 14 that processes the observation signal sent through the code discriminator 13, and a display section 15 that displays the processing results of the data processor 14. , a voice synthesis unit 16 for converting the warning information into voice if the information processed and obtained by the data processing unit 14 includes warning information; and a voice synthesis unit 16 for connecting the monitoring station B and the public communication network C. The network control unit 17 includes a network control unit 17 and an automatic dialing unit 18 that sends out the dial number of the alarm receiving station D via the network control unit 17.

Observation station A ₁ ~ which observed rainfall by the above operation
When a radio wave containing a coded pulse signal is emitted from An every 1 mm of rainfall, this radio wave is received by the antenna 11 and demodulated by the receiver 12 to become a coded pulse signal, and the code discriminator 13 receives the coded pulse signal. The data processing unit 14 determines the signal and outputs the observation signal (rainfall pulse signal) along with the station identification code.
is input.

The data processing unit 14 selects observation stations based on the station identification code input as described above and according to the processing program and processing data input in advance.
The rainfall pulse signals are aggregated for each A ₁ to An, and various data related to rainfall, such as total rainfall data indicating the total rainfall from the rain start point to the present time, and the set time, e.g.
Hourly rainfall data that shows the amount of rainfall over a period of 10 minutes, 1 hour, or 3 hours, rainfall change data that shows changes in rainfall amount and rainfall area over time, etc. (hereinafter collectively referred to as rainfall-related data) These rainfall-related data are then combined to create warning information according to the grade of the combination, such as advisories, warnings, or evacuation orders for debris flows, etc., if necessary.

The rainfall-related data and warning information created as described above are displayed on the display unit 15, and the above-mentioned warning information is converted into audio warning information in the voice synthesis unit 16. The control unit 17 is activated, and the automatic dialing unit 18
The dial number of the alarm receiving station D is automatically sent from the monitoring station B, the communication line 21 is closed in the public communication network C, and the above-mentioned audible warning signal is sent from the monitoring station B.

The alarm receiving station D receives the warning information sent from the monitoring station B by the above operation, and has a receiving unit 31 (including a network control function), and forwards the warning information to other alarm transfer destinations as necessary. It includes a transfer device 32 and the like. Note that this alarm receiving station D is generally installed in a public institution such as a local municipal office or fire department.

The warning information sent via the public communication line C (communication line 21) by the above operation is sent to the receiving unit 31.
The occurrence of a warning is recognized by this. In this case, if the forecaster is not present at the warning receiving station D, for example at night, the warning information can be transmitted by setting the forecaster's home as the alarm transfer destination E in the transfer device 32. Immediately after the forecaster's home dial number is received by the receiver 31, it is sent from the transfer device 32, and a public communication line is established between the alarm receiving station D and the forecaster's home (alarm transfer destination E). The warning information is connected via network C (communication line 22) and transferred to the forecaster's home.

In the above embodiment, since the warning information transferred from the alarm receiving station D to the alarm transfer destination E is assembled by voice, the equipment required for the alarm transfer destination E may be an ordinary telephone; The alarm forwarding destination E can be set to any location connected to a public communication network, especially a subscriber telephone network.

Furthermore, in the embodiment, the warning information is converted into audio at the monitoring station B, but the alarm receiving station D may also perform this conversion. Particularly when warning information is to be displayed visually at the alarm receiving station D, it is advantageous in terms of information processing to convert the warning information into audio at the alarm receiving station D. In this case, it is easily possible to provide a lower-level alarm receiving station that receives warning information only by voice, since the higher-level alarm receiving station D is equipped with the transfer device 32.

Note that the transfer device 32 can be a commercially available well-known telephone transfer device (including a transfer service provided by Nippon Telegraph and Telephone Public Corporation, etc.).

Also, in the drawing, alarm receiving station D and alarm forwarding destination E
Although each of these is shown with one station, it is clear that operation is possible even if each of them has multiple stations. In particular, if the warning receiving area is divided into multiple regions as shown by the dotted lines in the figure, and warning receiving stations D are installed in each region (for example, in each of villages _D1 to Dm located in the A valley basin) Alarm receiving station D ₁
~ Dm), observation station A ₁ ~
The observation data and station identification code from An are comprehensively judged to identify the warning receiving station D in the area that truly requires warning information, and the data processing unit 14 sends the identified warning to the automatic dialing unit 18. By configuring the software to send out the dial number of receiving station D, it is possible to optimally issue warning information to areas that really need it.

As explained above in detail, the present invention eliminates the need for data processing at the observation station by making the signal sent from the observation station to the monitoring station a coded signal by adding an observation station identification code to the raw observation signal. In addition, multiple observation stations and monitoring stations are connected through the same radio line, eliminating the need for identification of observation stations by carrier frequency, and has the following effects.

(a) No data processing unit is required at the observation station;
The configuration of the observation station becomes simple and inexpensive. In particular, since a large number of observation stations are provided, the alarm system itself can be constructed at low cost.

(b) Data processing of observation signals from multiple observation stations is performed all at once at the monitoring station, so comprehensive data covering multiple observation points can be obtained easily and with high reliability.

(c) When transmitting an observation signal, the identification code of the observation station is added to the observation signal, so regardless of the number of observation stations installed, there is only one connection between the observation station and the monitoring station.
It can be coupled using different types of radio waves, and only needs to occupy a narrow radio band.This also allows for any number of observation stations to be installed, and the number of observation stations to be installed during operation can be changed freely. Furthermore, since the receiving section of the monitoring station only needs to have a single radio wave receiving function,
The receiving section of the monitoring station is greatly simplified.

Although the above embodiment is an example in which the present invention is implemented in a local rainfall observation system, it goes without saying that the present invention can also be implemented in other warning systems that require urgent notification (for example, an earthquake notification system). do not have.

[Brief explanation of drawings]

The drawings are diagrams showing embodiments of the invention. (Main symbols), A ₁ ~ An... Observation station, B... Monitoring station, C... Public communication network, D (~ Dm)...
Alarm receiving station, E... Alarm transfer destination, 2... Code addition section, 13... Code discrimination section, 14... Data processing section, 18... Automatic dialing section, 32... Transfer device.

Claims (1)

[Claims] 1 Multiple observation stations that observe observed events, receiving and processing observation signals from the multiple observation stations,
It consists of a monitoring station that creates alarm information as necessary and an alarm receiving station that receives alarm information from the monitoring station, and at least the plurality of observation stations and the monitoring station are connected by a wireless link. In this warning system, each of the plurality of observation stations is given an identification code for mutual identification, and the signals sent from the plurality of observation stations to the monitoring station are output from the observation section. By adding the above-mentioned identification code to the unprocessed observation signal to create a coded observation signal, the wireless lines between the plurality of observation stations and the above-mentioned monitoring station are made to be wireless lines using the same frequency, and the above-mentioned The monitoring station receives the coded observation signal and processes the signal for each source based on the code included in the signal to create observation data. , a method for transmitting and processing observation signals of an alarm system in which the alarm information is sent to the alarm receiving station.