SU151836A1 - Tsunami Wave Detector - Google Patents

Description

For recording and automatically transmitting water level readings, devices are used in which the float wheel of the recorder blurs one or another group of contacts when the level is raised or lowered. For the periodic activation of the pointing device, a relay with a clockwork mechanism is used. However, the known devices register only periodic fluctuations of the sea level and do not give signals about the arrival of tsunami waves.

This task is solved by the proposed device - a tsunami wave detector, in which a co-relay circuit is switched on - an alarm of any type so that the signal occurs only if the duration of the rise or fall of the sea level is less than the lead time on the slat board.

FIG. 1 shows the electrical circuit of the proposed device; in fig. 2 is a graph of sea level oscillations with tsunami waves superimposed.

The proposed tsunami wave detector has two contact groups of 1 to 2, closing when the sea level rises or falls, pin 3, pulses to the search relay, consisting of relay 4, the electromagnetic of which moves the contact lead 5, and the lamella block 6 s two autonomous lamellae 7 and 5, and two groups of series-connected lamellae 9 n 10 (eleven lamellae per group). The switching of the lamella groups is carried out in such a way that the circuit is closed to the signal only if the time between adjacent ridges and the sea bottom is less than an hour, but longer than the wind wave period. The fixing of the wave period always starts from the moment the level direction changes. The tsunami arrival signal is given after the second change in the direction of the sea level travel.

No. 151836- 2 At the beginning of the tidal level rise, the contact group / closes, the leash 5 is on the laadel 7. After five minutes, contact 3 closes under the action of some mechanism, for example, a guard, on the axis of which the cam with twelve projections is strengthened. The leash 5 will go to the lamellae 9. Then every five minutes the leash 5 abruptly moves about the lamellae 9. The total travel time of the leash 5 along the lamellae 7 and group 9 is about an hour. As a result of the next (thirteenth) closure of contact 3, the driver 5 goes to 8. After that, the electrical circuit of relay 4 opens and the search relay will not work, although the clock will continue to periodically close contact 3. In this position, the tsunami wave detector circuit is open. The relay-finder circuit will be open until reflux begins and contact group 2 is closed.

For a further hour, the lead 5 will move along the louvers 8 and 10, after which it will switch to the lamella 7 and the circuit of the seeker relay will open again. The device will be de-energized until the tide starts again. Thus, in the case of the absence of tsunami waves for semi-daily tides, the device periodically operates 4 hours a day (twice an hour when the level rises and twice an hour when the level drops), the total number of switch-on relays per day will be about 48. For daily tides the operating time will be 2 hours per day and the number of closures of the relay-searcher will be 24.

Let us now consider the operation of the device when the level oscillates with a period less than 2 hours, i.e. with a period of tsunami waves.

When the sea level rises, the contact group / is closed and the leash 5 moves along la chalk 7 and 9. After, for example, 30 minutes a level begins to fall (the tsunami period is 60 minutes). Then contact group 2 is closed, and the lead 5 is still on lamella 9. In this case, the signaling device // circuit is closed and a signal is given that the sea level course deviates towards small periods.

Subject of the image

A tsunami wave detector, made in the form of a time duration analyzer, containing contact groups, a search relay and a timer, characterized in that, in order to automatically receive warning signals on the occurrence of long waves, any type of alarm is connected to the search relay circuit so that the signal (radio, light, sound) is given only if the duration of the rise or fall of the level is less than the lead time on the slat strip.

i

2

/about

1 - ".- LYASHYAG

npjms i hymiii

L 7L