JP2016211920A - Seismoscope for distribution board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seismoscope for a distribution board that can easily change the earthquake detecting sensitivity for operating various safety devices depending on an installation environment, and can change the timing of outputting a signal after a certain time from the detection of an earthquake.SOLUTION: The seismoscope includes: an acceleration sensor 11 for detecting an earthquake and outputting a signal proportional to the earthquake; an earthquake intensity setting unit 12 for setting an earthquake intensity at which abnormality occurrence is determined; and a breaking time setting unit 13 for setting a timer time for counting a certain time. A seismoscope CPU 19 outputs an abnormality occurrence signal when the earthquake intensity detected by the acceleration sensor 11 is a predetermined earthquake intensity or more, and then outputs a delay operation signal after a lapse of the set certain time.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a seismic device for a distribution board that is installed on a distribution board to stop energization when an occurrence of an earthquake is detected.

  Conventionally, there is a distribution board provided with a seismic device that outputs a signal to shut off the main circuit breaker after a certain period of time when an earthquake with a seismic intensity of 5 or more is detected on a residential distribution board (for example, a patent) Reference 1).

JP-A-9-215178

In the seismic sensing device, the detected seismic intensity for judging the occurrence of an earthquake is constant (for example, seismic intensity 5+), and even if it is a timer that shuts off the main circuit breaker after a certain period of time from the occurrence of the earthquake, for example, constant after 3 minutes Met.
However, for example, in high-rise apartments, there is a large difference in the way of shaking due to earthquakes between the low-rise and high-rise areas. For this reason, it is desirable to change the operation settings of the seismic device according to the installation floor. Also, it is desirable that the time from the occurrence of the earthquake to the disconnection of the main circuit breaker can be easily changed because a preferable delay time varies depending on the home, such as the presence of an elevator and the position of a door provided with an electric lock.

  Therefore, in view of such problems, the present invention changes the earthquake detection sensitivity for stopping energization according to the installation environment and the timing of the signal output after a certain time after detecting the earthquake according to the installation environment. The purpose is to provide a seismic device for distribution boards that is made possible.

In order to solve the above problems, the invention of claim 1 is an earthquake detection means for detecting an earthquake and outputting a signal proportional to the seismic intensity, and the seismic intensity detected by the earthquake detection means is greater than a predetermined seismic intensity. A seismic device for distribution board having an abnormality determining means for determining that an abnormality has occurred and outputting an abnormality occurrence signal for stopping energization, and having a seismic intensity setting unit for setting a predetermined seismic intensity to determine that an abnormality has occurred And the abnormality determining means determines that an abnormality has occurred when the earthquake detecting means detects an earthquake having a seismic intensity equal to or greater than the set seismic intensity.
According to this configuration, it is possible to change the seismic intensity threshold value for determining that an abnormality has occurred, so that it is possible to set a sensitivity suitable for the installation location, and it is possible to prevent malfunctions that operate even with weak seismic intensity and output an abnormality occurrence signal.

According to a second aspect of the present invention, in the configuration according to the first aspect, the abnormality determining means outputs a delay operation signal for interrupting the electric circuit after a predetermined time after determining that an abnormality has occurred, and counts the predetermined time. And a delay time setting unit for setting.
According to this configuration, since it is possible to set the time from when the earthquake is detected until the electrical circuit is delayed and cut off, it is possible to set a preferable time for different installation environments, and to make the residents feel uneasy. Can be reduced.

The invention according to claim 3 is an earthquake detection means for detecting an earthquake and outputting a signal proportional to the seismic intensity; and if the seismic intensity detected by the earthquake detection means is greater than a predetermined seismic intensity, it is determined that an abnormality has occurred and is energized. A seismic device for distribution board having an abnormality determining means for outputting an abnormality occurrence signal for stopping, wherein the abnormality determining means is a delay operation signal for interrupting an electric circuit after a predetermined time from the occurrence of an abnormality. And a delay time setting unit for setting a timer time for counting a predetermined time.
According to this configuration, since it is possible to set the time from when the earthquake is detected until the electrical circuit is delayed and cut off, it is possible to set a preferable time for different installation environments, and to make the residents feel uneasy. Can be reduced.

  According to the present invention, the seismic intensity threshold value determined as the occurrence of an abnormality can be changed, so that it is possible to set the sensitivity suitable for the installation location, and it is possible to prevent a malfunction that operates even with a weak seismic intensity and outputs an abnormality occurrence signal.

It is a circuit block diagram which shows an example of the seismic device for distribution boards which concerns on this invention.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below in detail with reference to the drawings. FIG. 1 is a circuit block diagram showing an example of a seismic device for a distribution board according to the present invention. A seismic device for a distribution board (hereinafter simply referred to as “seismic device”) 1 includes an earth leakage breaker 2 and A configuration connected to the external device 3 is shown. The seismic sensing device 1 includes an acceleration sensor 11 that detects an earthquake, a seismic intensity setting unit 12 that sets a seismic intensity that the seismic sensing device 1 determines that an abnormality has occurred, and a delay time from when it is determined that an abnormality has occurred to when a cutoff signal is output. Set off time setting unit 13, breaker trip circuit 14 for generating a cut signal, test / reset switch 15 for test operation and reset operation, buzzer 16 for sounding alarm sound, LED 17 for indicating occurrence of abnormality, external device 3 Are provided with a communication IF 18 for notifying the occurrence of an abnormality, a seismic device CPU 19 for controlling the seismic device 1, a power supply unit 20, and the like.

  The acceleration sensor 11 is a three-axis acceleration sensor that detects a pitching motion in addition to a rolling motion, and outputs vibration information that is a signal proportional to the seismic intensity with respect to a swinging in an arbitrary direction. The seismic intensity setting unit 12 is an operation unit that sets a seismic intensity that is a threshold for the seismic sensing device 1 to output an abnormality occurrence signal to the outside. For example, the seismic intensity setting unit 12 is selected and set from seismic intensity 4, 5 weak, 5 strong, 6 or the like. The For example, if the seismic intensity is set to 5 weak, an abnormality occurrence signal is output if it is determined that an earthquake having a seismic intensity of 5 or less occurs.

The cut-off time setting unit 13 is an operation unit that sets a time from when an abnormality occurrence signal is output to when a cut-off signal for electric circuit cut-off is output to the outside, and is set, for example, between 2 minutes and 5 minutes.
The threshold seismic intensity set by the seismic intensity setting unit 12 and the delay time set by the cutoff time setting unit 13 are stored in the set value storage unit 19a.

The breaker trip circuit 14 is a circuit that outputs a cut-off operation signal that cuts off the earth leakage breaker (main switch) 2. For example, a signal similar to a test signal that tests the earth leakage breaker 2 is output and received. The earth leakage breaker 2 is cut off. The breaker trip circuit 14 receives a delay operation signal output from the seismic device CPU 19 based on the delay time set by the cutoff signal setting unit 13 and outputs a cutoff signal.
Note that the test / reset switch 15 is a switch for causing the abnormality occurrence signal to be output as a test or stopping the output of the shut-off operation signal when the abnormality occurrence signal is output.

  The operation of the seismic sensing device 1 configured as described above is as follows. When an earthquake occurs, the acceleration sensor 11 detects it and vibration information proportional to the magnitude of the earthquake is output to the seismic sensing device CPU 19. The seismic sensing device CPU 19 determines the seismic intensity from the received vibration information. If the determined vibration is greater than the seismic intensity set by the seismic intensity setting unit 12, it is determined that an abnormality has occurred and the external device 3 is abnormal via the communication IF 18. Send generated signal.

  In addition, the seismic device CPU 19 that has determined that an abnormality has occurred causes the buzzer 16 to sound and the LED 17 to be turned on or blinking to notify the occurrence of the abnormality. Further, the counting of the fixed time set by the shut-off time setting unit 13 is started, and when the set time is up, a delay operation signal is output to the breaker trip circuit 14, and the breaker trip circuit 14 receives this signal and leaks the current. A shutoff operation signal is output to the breaker 2. As a result, the earth leakage breaker 2 is cut off, the electric circuit is cut off, and the entire dwelling unit is in a power failure state.

  On the other hand, the external device 3 is a device that notifies of the occurrence of an earthquake, or is connected to a shut-off device for an IH device that should be stopped immediately after the occurrence of an earthquake, and receives an abnormality occurrence signal without delaying and issues an alarm. Or immediately shuts off.

  Thus, since the seismic intensity threshold value for determining that an abnormality has occurred can be changed, it is possible to set a sensitivity suitable for the installation location, and it is possible to prevent malfunctions that operate even with a weak seismic intensity and output an abnormality occurrence signal. In addition, since it is possible to set the time from when an earthquake is detected until the electrical circuit is delayed, it is possible to set a preferable time for different installation environments, and it is possible to reduce situations in which residents are worried.

  In the above embodiment, both the threshold seismic intensity and the delay time can be changed. However, only one of them may be changed. Moreover, although the output destination of the interruption | blocking signal is made into the earth leakage breaker 2, if it is a circuit breaker which can interrupt the electric circuit in a dwelling unit collectively, it may not be an earth leakage breaker.

  1 .... Seismic device for distribution board, 11 .... Acceleration sensor (earthquake detection means), 12 .... Seismic intensity setting part, 13 .... Interruption time setting part (delay time setting part), 14 .... Breaker trip circuit, 16 .... Buzzer, 19 .... Seismic device CPU (abnormality determination means).

Claims (3)

An earthquake detection means for detecting an earthquake and outputting a signal proportional to the seismic intensity, and an abnormal occurrence to stop energization by judging that an abnormality has occurred if the seismic intensity detected by the earthquake detection means is greater than a predetermined seismic intensity A seismic device for a distribution board having an abnormality determining means for outputting a signal,
A seismic intensity setting unit for setting the predetermined seismic intensity to be determined to be abnormal;
The distribution panel seismic sensing device according to claim 1, wherein the abnormality determination unit determines that an abnormality has occurred when the earthquake detection unit detects an earthquake having a seismic intensity greater than a set seismic intensity. The abnormality determining means outputs a delay operation signal for interrupting the electric circuit after a predetermined time from determining that an abnormality has occurred,
The seismic device for a distribution board according to claim 1, further comprising a delay time setting unit for setting a timer time for counting the predetermined time. An earthquake detection means for detecting an earthquake and outputting a signal proportional to the seismic intensity, and an abnormal occurrence to stop energization by judging that an abnormality has occurred if the seismic intensity detected by the earthquake detection means is greater than a predetermined seismic intensity A seismic sensing device having an abnormality determining means for outputting a signal,
The abnormality determining means outputs a delay operation signal for interrupting the electric circuit after a predetermined time from determining that an abnormality has occurred,
A seismic device for a distribution board, comprising a delay time setting unit for setting a timer time for counting the predetermined time.

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