JPH0333029Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The invention consists of a transducer that outputs electrical output and a special earthquake recording device, that is, a built-in printer that detects when a predetermined seismic motion, for example 0.8 gal or more, is detected. The present invention relates to a seismometer monitoring device suitable for use in a seismometer system comprising an earthquake recording device that starts driving and records its vibration waveform, and otherwise does not drive the printer, thereby consuming no recording paper. It is something.

(Problems to be solved by conventional techniques and ideas) The above-mentioned earthquake recording device has the advantage of not recording earthquake motions that are too weak to be recorded on recording paper, so it also serves the purpose of resource conservation. However, most of the time the vibration is such that it is not necessary to make such a record. Therefore, in such a case, even if the power switch of the seismic recording device is turned on, it is difficult to determine whether the seismic measurement system including the converter and the seismic recording device is in a standby state that enables normal measurement recording. It's not always obvious.

Naturally, the measurement record of the earthquake waveform at a certain point in time is never repeated, so when an earthquake occurs that should drive the printer, there is an abnormality in some part of the system, which means that the earthquake recording device does not work. That's a problem.

However, the earthquake recording system described above does not eliminate this risk.

(Means for Solving the Problems) The present invention has been made in view of the above-mentioned problems and to solve them.

In other words, the present invention consists of a vibrator that outputs electrical output, and when the intensity of seismic motion exceeds a predetermined level, the printer starts driving and records the vibration waveform of the earthquake, and when the intensity falls below that intensity, the printer stops driving. used in a seismograph system consisting of an earthquake recording device that does not record the
It includes a monitor circuit that monitors the electrical output of the vibrator, and a display device consisting of a plurality of segments for displaying the output signal of the monitor circuit, and the display device detects seismic motion of less than the predetermined intensity among the seismic motions. By classifying into multiple levels according to the intensity and associating a separate light-emitting segment with each class, each light-emitting segment can emit light in response to earthquake motion of each class intensity, and each light-emitting segment can be horizontally , a seismometer monitoring device characterized by being arranged vertically or in an inclined manner.

(Embodiment) An embodiment of the seismometer monitoring device of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing a seismometer system including the device of the present invention, and numeral 1 is a transducer installed on the ground, and the structure thereof is, for example, a piezoelectric type.

Reference numeral 2 denotes an earthquake recording device according to the present invention that is connected to the vibrator 1, and is composed of the following parts. 3 is a printer that records vibration waveforms on recording paper 4 when a predetermined seismic motion is exceeded, and normally records the waveform automatically when the vibration exceeds 0.8 gal. 5 is the printer 3
and a control circuit for controlling an operation display device to be described below; 6 is a monitor device connected to the control circuit 5; this device 6 is composed of a monitor circuit 7 and a display device 8;

A circuit diagram of an example of the monitor circuit 7 is shown in FIG.

The display device 8 is made up of, for example, seven light emitting segments 9, in one example of which light emitting diodes (LEDs) are used.

In FIG. 2, 10 is an input terminal on the side of the resonator 1, 11 is a power supply input terminal, 12 is a ground line, and 13 is a constant current source.

Next, the operation of the display device 8 in the monitor device 6 of the embodiment of the present invention will be explained. As mentioned above, when seismic motion of 0.8 gal or less is not recorded on the recording paper 4, if there is a vibration of 0.7 gal, the printer 3 does not operate, but all seven light emitting segments 9 are lit.

At a vibration of 0.4 gal, for example, all the four light emitting segments 9 from the left of the display device 8 in FIG. 1 light up, and the other light emitting segments do not light up. At vibrations of about 0.1 gal, only the leftmost light-emitting segment lights up.

(Effects of the invention) As mentioned above, the seismometer monitor of the invention is equipped with a display device that has light-emitting segments that display minute vibrations, so even when there is no normal large earthquake motion, This has the remarkable effect of making it possible to understand at a glance that the seismograph system is properly installed.

Therefore, when a large earthquake that should be recorded occurs, it is possible to ensure a state in which it can be measured and recorded without fail, and it is possible to eliminate the anxiety that a measurement failure may occur.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a seismometer system including the device of the present invention, and FIG. 2 is a circuit diagram showing an example of the seismometer monitoring device of the present invention. 1: Transducer, 2: Earthquake recording device, 3: Printer, 6: Monitor device, 7: Monitor circuit, 8:
Display device, 9: light emitting segment.

Claims (1)

[Scope of utility model registration request] A transducer that outputs electrical output, and when the seismic motion intensity exceeds a predetermined level, the printer starts driving and records the vibration waveform of that earthquake, and when the intensity falls below that intensity, the printer stops driving and no recording is made. A monitor circuit for monitoring the electrical output of the converter, and a display comprising a plurality of segments for displaying the output signal of the monitor circuit, which is used in a seismograph system consisting of an earthquake recording device, and a monitor circuit for monitoring the electrical output of the converter. Among the seismic motions, seismic motions below the predetermined intensity are classified into multiple levels according to their intensity, and each class is associated with a separate light-emitting segment,
A monitoring device for a seismograph, characterized in that each of the light emitting segments is capable of emitting light in response to seismic motion of each class of intensity, and the light emitting segments are arranged horizontally, vertically, or in an inclined manner.