JP4217254B2 - Mobile type seismic wave detection alarm device - Google Patents

Description

  The present invention is portable in a case, and the case itself is made to function positively as a resonator, and when the residual sound vibration caused by the alarm signal driving ends, the initial monitoring and measurement state is automatically set. The present invention relates to a mobile type seismic wave detection alarm device that can be restored.

Many devices and devices for detecting seismic waves, recording seismic waves, displaying vibration values, and alarming exist and are already known.
These system configurations are roughly divided into two systems, mechanical and electronic.
The mechanical type has a pendulum method and a switch method. The pendulum method is configured to continuously record seismic waves with a pen at the tip of the pendulum. The switch method is for a preset value. When a certain level of vibration is applied, springs, mercury, metal spheres, etc. become contacts, creating a closed circuit by the switch function operation, and shutting off the commercial power supply system directly with the closed circuit contacts, alarms, searchlights, etc. There is a type to control and a type to operate the latching relay in the closed circuit and operate various functions at the contact of the relay, even when the contact mechanism and alarm buzzer etc. are mounted in the same storage box However, in any case, the return (open circuit) of the closed circuit is executed manually, and there is no device or invention of the automatic return system.

  On the other hand, there are various types of electronic devices with various combinations of functions and inventions, but roughly classified by function, sensor unit, signal processing unit, calculation unit, signal control unit, seismic intensity display unit, alarm signal generation unit, communication There is no device or invention that includes a system port section, etc., and in which the sensor section, alarm signal generation, and drive section (such as a siren speaker) are mounted in the same storage box in the above-described functional structure.

  If the sensor unit, alarm signal generation unit, and alarm signal drive unit (siren, speaker, etc.) can be built in the same storage box, it will be extremely easy to handle, including system installation, as a mobile alarm device. However, the main reason for this is that when the alarm drive function, for example, a speaker or the like is activated, the vibration generated by the device itself vibrates or resonates, and as a result, the built-in acceleration sensor is used for this device. The generated vibration is sensed as acceleration, and the detection result satisfies a preset detection condition. As a result, the alarm driving function is intermittently or restarted again. That is, when the feedback loop is established due to the case vibration, the system itself causes a kind of oscillation phenomenon.

In addition, there exists the following patent document 1 as a prior art document regarding a seismic wave detection alarm apparatus, for example. Patent Document 1 sequentially determines whether or not the acceleration data exceeds a preset threshold value. When the acceleration data exceeds a preset threshold value, the earthquake occurrence time is defined as the earthquake occurrence time. Based on the maximum value of the acceleration data group before the first predetermined period, a short-term seismic intensity is obtained and alarm information is generated.
JP-A-6-324159

As described above, as a seismic wave detection alarm device, for example, if the sensor unit, the alarm signal generation unit, and the alarm drive unit (siren, speaker, etc.) can be stored in the same storage box, the system can be installed as a mobile alarm device. Handling is extremely easy.
However, when an alarm driving unit such as a speaker is activated in the same storage box, vibration generated from the device itself vibrates or resonates, and the built-in acceleration sensor senses again, There is a problem that the alarm driving unit is intermittently or restarted.

  As means for reducing these phenomena, the power generated by the alarm drive function is reduced, the frequency band having a different spectrum is used for the acceleration sensor, or the acceleration detection setting conditions are further limited. Although any of these measures can be considered, any of the results will greatly reduce the originally desired specification performance.

In view of the above situation, the present invention is housed in a case and portable, and the case itself actively functions as a resonator, and when the residual sound vibration caused by the alarm signal drive ends, A mobile type seismic wave detection alarm device capable of automatically returning to an initial monitoring measurement state is provided.
The present invention also provides a mobile seismic wave detection alarm device that enables a self-diagnostic test of the system.

In order to solve the above problems, the present invention provides the following configurations.
According to a first aspect of the present invention, in the case, an acceleration sensor having one or more axes, signal processing means for converting an analog signal detected by the acceleration sensor into a digital signal at a sampling frequency, and the digital signal are received. An alarm is output by an earthquake warning signal generated by the calculation / control means for calculating and controlling, an earthquake warning signal generating means for receiving a control signal from the calculation / control means and generating an earthquake warning signal, and an earthquake warning signal of the earthquake warning signal generating means A mobile type seismic wave detection alarm device in which alarm output means is housed, wherein the calculation / control means includes:
Maximum acceleration value detection function that detects the maximum acceleration value for each sample,
A first comparison and detection function for comparing the maximum acceleration value with a preset first reference acceleration value and detecting a maximum acceleration value that is greater than the first reference acceleration value;
A first monitoring function for monitoring whether a first continuous duration of the maximum acceleration value detected by the first comparison detection function exceeds a preset first reference time;
An earthquake warning signal generation control function for transmitting an earthquake warning signal generation control signal to the earthquake warning signal generation means when the first monitoring function detects a first continuous duration exceeding the first reference time;
An interruption function for interrupting comparison detection of the first comparison detection function and monitoring of the first monitoring function;
A second comparison detection function that compares the maximum acceleration value with a preset second reference acceleration value and detects a maximum acceleration value that is smaller than the second reference acceleration value;
Second monitoring is continuously repeated a predetermined number of times every preset time unit until the second continuous duration of the maximum acceleration value detected by the second comparison detection function exceeds a preset second reference time. A monitoring function;
When it is confirmed by the second monitoring function that the second continuous duration has exceeded the second reference time, the comparison detection of the second comparison detection function and the monitoring of the second monitoring function are terminated. And providing a mobile type seismic wave detection alarm device having a return function for returning the comparison detection of the first comparison detection function and the monitoring of the first monitoring function.

  According to a second aspect of the present invention, there is provided acceleration generating means for continuously generating acceleration exceeding the first reference acceleration value over the first reference time for the acceleration sensor, and the acceleration generating means is manually operated. The acceleration output means is activated by a manual operation, and an alarm is issued to the alarm output means via the acceleration sensor, signal processing means, calculation / control means, and earthquake alarm signal generation means. The mobile type seismic wave detection alarm device according to claim 1, wherein the mobile type seismic wave detection alarm device according to claim 1 is made possible to output and enable a self-diagnosis test of the system.

  The invention according to claim 3 is configured such that the case functions as a resonator for an alarm generated by the alarm output means. The mobile type seismic wave detection alarm according to claim 1 or 2, A device is provided.

  According to the first aspect of the present invention, the portable device is portable in the case, and the case itself is actively functioning as a resonator, and the residual sound vibration caused by the driving of the alarm signal is terminated. When this is done, a mobile type seismic wave detection alarm device that can automatically return to the initial monitoring measurement state can be provided.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, a self-diagnosis test of the system can be arbitrarily performed by manual operation.

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2, the case can actively amplify the sound as a resonator for an earthquake alarm.

Hereinafter, embodiments of the present invention will be described with reference to the drawings showing examples.
In FIG. 1A, reference numeral 1 denotes a mobile type seismic wave detection alarm device according to the present invention. The mobile type seismic wave detection alarm device 1 includes an acceleration sensor 3 having one or more axes and an acceleration sensor in a case 2. Signal processing means 4 for converting the analog signal detected by 3 into a digital signal at a sampling frequency, calculation / control means 5 for receiving and calculating and controlling the digital signal, and receiving a control signal from the calculation / control means 5 An earthquake alarm signal generating means 6 for generating an earthquake alarm signal and an alarm output means 7 for outputting an alarm in response to the earthquake alarm signal of the earthquake alarm signal generating means 6 are housed.

  Then, as shown in FIG. 1B, the calculation / control means 5 includes a maximum acceleration value detection function 11 for detecting a maximum acceleration value for each sample, a maximum acceleration value, and a preset first reference acceleration value. The first comparison detection function 12 for comparing and detecting the maximum acceleration value that is larger than the first reference acceleration value and the first continuous duration of the maximum acceleration value detected by the first comparison detection function 12 are set in advance. A first monitoring function 13 for monitoring whether or not the first reference time is exceeded, and when the first monitoring function 13 detects a time exceeding the first reference time, the earthquake warning signal generation control signal is sent to the earthquake warning signal generating means 6. , An interrupt function 15 for interrupting comparison detection of the first comparison detection function 12, and monitoring of the first monitoring function 13, a maximum acceleration value and a preset second reference acceleration Ratio with value The second comparison detection function 16 for detecting the maximum acceleration value that is smaller than the second reference acceleration value and the second continuous duration of the maximum acceleration value detected by the second comparison detection function 16 are preset. The second monitoring function 17 that continuously monitors a predetermined number of times for each preset time unit until the second reference time is exceeded, and the second monitoring function 17 allows the second continuous duration to exceed the second reference time. If it is confirmed, the comparison detection of the second comparison detection function 16 and the monitoring of the second monitoring function 17 are terminated, the comparison detection of the first comparison detection function 12, the monitoring of the first monitoring function 13, And a return function 18 for returning the.

  Furthermore, an acceleration generating means 21 that continuously generates acceleration exceeding the first reference acceleration value for the time exceeding the first reference time is provided in the case 2 for the acceleration sensor 3, and the acceleration generating means 21 is manually operated. It is configured to be activated by an operation, and by activating the acceleration generating means 21 by a manual operation, an alarm signal is generated by the alarm output means 7 via the acceleration sensor 3, and a system self-diagnosis test can be performed. It is configured as follows.

Furthermore, the case 2 is configured to function as a resonator for an earthquake alarm generated by the alarm output means 6.
In the mobile type seismic wave detection alarm device 1, when the alarm output means 7 outputs an alarm, the calculation / control means 5 makes a maximum within a first continuous duration exceeding the first reference time. The seismic intensity may be obtained from the acceleration value, and the seismic intensity may be displayed on the display means 8.

Next, based on FIG.1 and FIG.2, the detail of the function of the mobile type | formula seismic wave detection alarm apparatus 1 of this invention is demonstrated.
Each acceleration output signal corresponding to each axis of the N (N = 1 to N = n) axis acceleration sensor 3 generated when the acceleration sensor 3 detects an earthquake or vibration is an anti-alias filter & buffer amplifier. The signal is input to the AD converter 33 via the multiplexer 32 that handles n channels.
The multiplexer 32 and the AD converter 33 are controlled by an AD controller 34, and convert an analog signal into a digital signal at a set sampling frequency.
The AD controller 34 is controlled by the microprocessor 41.
The anti-alias filter & buffer amplifier 31, multiplexer 32, AD converter 33, and AD controller 34 correspond to the signal processing means 4.

The AD output data signal generated at every sampling is interfaced to the microprocessor 41.
The microprocessor 41 corresponds to the calculation / control means 5, and includes a comparator 42, a controller 43, a timer 44, a register group 45, a central processing unit 46, a RAM (Random Access Memory) 47, and a ROM (Read Only). Memory) 48 and the like, each of the functional blocks of the mobile type seismic wave detection alarm device 1 and the function-specific control are executed by the functional blocks in the microprocessor 41. Preset algorithm programs such as various coefficients, converters, arithmetic control, I / O control, etc. are stored in the ROM 48 and are configured to drive the RAM 47 and various registers of the register group 45.

  In the mobile type seismic wave detection alarm device 1, as the earthquake alarm signal generating means 6, a driver unit 63 for generating an alarm signal, a voice recorder 66 for outputting sound, a driver unit 63 and a voice recorder 66 are provided. And a logic gate 64 that outputs an OR output signal that is a logical sum, and an alarm signal driving unit 65 that outputs an alarm and a sound is provided as the alarm output means 7.

Further, an in-check lamp 68 that displays a state during inspection of the mobile seismic wave detection alarm device 1 and a ready lamp 70 that indicates a ready state are provided.
In the figure, 61 is an I / O port P1 terminal, 62 is an I / O port P2 terminal, 67 is an I / O port P3 terminal, and 69 is an I / O port P4 terminal 67. Reference numeral 91 is a system diagnostic test switch, and 92 is an impulse generator, which will be described in detail later.

Next, the flow of processing in the microprocessor 41 will be described based on FIGS. 3 and 4 with reference to FIGS.
When the AD output data E (xn) group is input to the I / O port 49 of the microprocessor 41 from the AD converter 33 provided at the subsequent stage of the signal processing means 4, the microprocessor 41 detects the maximum acceleration value. The maximum acceleration value Acc (MAX1) is detected from the AD output data E (xn) signal group in n channels for each AD converter sample by the function 11 (step S1), and the maximum acceleration value Acc is detected by the first comparison detection function 12. (MAX1) is compared with a preset first reference acceleration value Acc (Ref), and a maximum acceleration value Acc (MAX1) where maximum acceleration value Acc (MAX1)> first reference acceleration value Acc (Ref) is detected. {Refer to FIG. 4 (1)} (step S2), the comparison result, maximum acceleration value Acc (MAX1)> first regulation Between the first continuous duration t (n) which is the acceleration value Acc (Ref) and the first reference time T (Ref) set in advance, the first monitoring function 13 causes the first continuous duration t ( n)> The time point at which the first reference time T (Ref) is established {see FIG. 4 (2)} (step S3), and the first continuous duration t (n)> the first reference time T (Ref) is The detected time point {that is, the time point when the logical product of Acc (MAX1)> Acc (Ref) and t (n)> T (Ref)} is defined as the first time T (0) {FIG. 4 (3) See}, the earthquake alarm signal generation control function 14 transmits a status signal from the I / O port P1 terminal 61 and the P2 terminal 62 for a preset time width T (WΦ) from the first time T (0). {See FIG. 4 (4)} (step S4).

At this time, the status signal transmitted from the P1 terminal 61 excites the driver unit 63 and drives the alarm signal drive unit (siren, magtech sounder, buzzer, speaker, etc.) 65 via the logic gate 64, Output an alarm.
The status signal transmitted from the P2 terminal 62 is a voice recorder activation command, which activates the voice recorder 66. The alarm signal drive unit (speaker or the like) 65 via the logic gate 64 causes the voice recorder 66 to operate. Output the sound. When the output of the driver unit 63 and the output of the voice recorder 66 are made at the same time, they are simultaneously transmitted to the alarm signal driving unit 65 as an OR output signal that is a logical sum through the logic gate 64, and from the alarm signal driving unit 65. Alarm and sound are output simultaneously. FIG. 4 (6) shows the state of the energy released from the alarm signal driver 65 at that time.

  On the other hand, the microprocessor 41 uses the interruption function 15 to perform comparison detection by the first comparison detection function 12 and first continuous duration t (by the first monitoring function 13 at the first time T (0). n)> The monitoring of the first reference time T (Ref) is temporarily suspended {see FIGS. 4 (1) and (2)}, and the second comparison detection function 16 allows the maximum acceleration value Acc (MAX1)> first reference. The acceleration value Acc (Ref) detection mode is switched to the maximum acceleration value Acc (MAX1) <second reference acceleration value Acc (Ref2) detection mode, and the maximum acceleration value Acc (MAX1) is set to a preset second reference acceleration value Acc. Compared with (Ref2), the maximum acceleration value Acc (MAX1) where the maximum acceleration value Acc (MAX1) <the second reference acceleration value Acc (Ref2) is detected {see FIG. 4 (5). (Step S5) The second monitoring function 17 sets the preset time width T (w1) as one unit, and the second continuous detection of the maximum acceleration value Acc (MAX1) detected by the second comparison detection function 16 The duration t (n2) is monitored, and the set time width T (w1) is continuously and repeatedly monitored in units of n until the second continuous duration t (n2) exceeds a preset second reference time T (Ref2). {Refer to FIG. 4 (5)} (step S6), and the second time T (n) is the time point when the detection confirmation is obtained that the second continuous duration t (n2) exceeds the second reference time T (Ref2) At the second time T (n), the return function 18 terminates the comparison detection of the second comparison detection function 16 and the monitoring of the second monitoring function 17, and the maximum acceleration value by the first comparison detection function 12 Acc (MAX1)> First Standard Acceleration And comparison detection of the maximum acceleration value Acc (MAX1) is the value Acc (Ref), the first monitoring function 13 according to the first continuous duration time t (n)> is returned to the monitoring of the first reference time T (Ref). As a result, when the residual sound vibration caused by the driving of the alarm signal ends, it is possible to automatically return to the initial monitoring measurement state.

When the first comparison detection function 12 and the first monitoring function 13 are in operation, that is, a state in which a logical product of Acc (MAX1)> Acc (Ref) and t (n)> T (Ref) is detected. The system is performing vibration measurement, outputs a status signal from the I / O port P4 terminal 69, and turns on the ready lamp 70.
Conversely, when the second comparison detection function 16 and the second monitoring function 17 are in operation, that is, the establishment of the logical product of Acc (MAX1) <Acc (Ref2) and t (n2)> T (Ref2) is detected. The system is on standby (inspection), a status signal is output from the I / O port P3 terminal 67, and the inspection lamp 68 is turned on.

Next, a self-diagnosis test function by the acceleration generating means 21 of the mobile type seismic wave detection alarm device 1 will be described.
As a means for performing a self-diagnosis test of the system, an impulse generator 92 as an acceleration generating means 21 for applying an equivalent step-functional impulse signal equivalent to the acceleration applied from the outside is equivalent to the acceleration sensor 3. Provide.
That is, the impulse generator 92 has a function of continuously generating an acceleration exceeding the first reference acceleration value for a time exceeding the first reference time, and a response response is generated by the acceleration sensor 3 of each axis. Configured to get.

As shown in FIG. 2, the impulse signal is activated by manually operating a system diagnostic test switch 91, and the impulse generator 92 is activated. The output signal is input to the acceleration sensor 3, and the acceleration sensor 3 of each axis is turned on. Shake equivalently.
The response response output signal of the acceleration sensor 3 of each axis guarantees the characteristic satisfying the logical product of the above-mentioned Acc (MAX1)> Acc (Ref) and t (n)> T (Ref). With the above-described configuration, it is possible to determine whether the system is normal or not by manually operating the system diagnosis test switch 91.

  As described above, the mobile type seismic wave detection alarm device 1 of the present invention includes the acceleration sensor 3, the signal processing means 4, the calculation / control means 5, the earthquake alarm signal generating means 6, and the alarm output means 7 in the same case. 2, the case 2 itself is actively functioning as a resonator, the residual sound vibration caused by the alarm signal drive ends, and the excessive phenomenon of the signal processing system circuit is lower than the preset energy value. In addition, time-series detection of whether or not is automatically performed, and when the detection is confirmed, the initial monitoring measurement state can be automatically returned.

(A) It is explanatory drawing which shows roughly the function of the mobile type | formula seismic wave detection alarm apparatus by this invention. (B) It is explanatory drawing which shows roughly the function of the calculation and control means by this invention. It is explanatory drawing which shows roughly the structure of the mobile type | formula seismic wave detection alarm apparatus by this invention. It is a flowchart which shows the flow of a process of the calculating / control means by this invention. It is explanatory drawing which shows the state of the process by this invention, and an output with the flow of time.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mobile type seismic wave detection alarm device 2 Case 3 Acceleration sensor 4 Signal processing means 5 Calculation / control means 6 Earthquake alarm signal generation means 7 Alarm output means 11 Maximum acceleration value detection function 12 First comparison detection function 13 First monitoring function 14 Earthquake Alarm signal generation control function 15 Interruption function 16 Second comparison detection function 17 Second monitoring function 18 Return function 21 Acceleration generating means

Claims (3)

In the case, an acceleration sensor having one or more axes, signal processing means for converting an analog signal detected by the acceleration sensor into a digital signal at a sampling frequency, and calculation / control for receiving and calculating / controlling the digital signal Means, an earthquake warning signal generating means for receiving a control signal from the calculation / control means and generating an earthquake warning signal, and an alarm output means for outputting an alarm according to the earthquake warning signal of the earthquake warning signal generating means. The mobile type seismic wave detection alarm device, wherein the calculation / control means is:
Maximum acceleration value detection function that detects the maximum acceleration value for each sample,
A first comparison and detection function for comparing the maximum acceleration value with a preset first reference acceleration value and detecting a maximum acceleration value that is greater than the first reference acceleration value;
A first monitoring function for monitoring whether a first continuous duration of the maximum acceleration value detected by the first comparison detection function exceeds a preset first reference time;
An earthquake warning signal generation control function for transmitting an earthquake warning signal generation control signal to the earthquake warning signal generation means when the first monitoring function detects a first continuous duration exceeding the first reference time;
An interruption function for interrupting comparison detection of the first comparison detection function and monitoring of the first monitoring function;
A second comparison detection function that compares the maximum acceleration value with a preset second reference acceleration value and detects a maximum acceleration value that is smaller than the second reference acceleration value;
Second monitoring is continuously repeated a predetermined number of times every preset time unit until the second continuous duration of the maximum acceleration value detected by the second comparison detection function exceeds a preset second reference time. A monitoring function;
When it is confirmed by the second monitoring function that the second continuous duration has exceeded the second reference time, the comparison detection of the second comparison detection function and the monitoring of the second monitoring function are terminated. A mobile type seismic wave detection alarm device, comprising: a return function for returning the comparison detection of the first comparison detection function and the monitoring of the first monitoring function.   The acceleration sensor is provided with an acceleration generating means for continuously generating an acceleration exceeding the first reference acceleration value over the first reference time, and the acceleration generating means is configured to be activated by a manual operation. By starting the acceleration generating means by manual operation, the alarm output means outputs an alarm via the acceleration sensor, signal processing means, calculation / control means and earthquake alarm signal generating means, and the system self-diagnosis test The mobile type seismic wave detection alarm device according to claim 1, wherein The mobile seismic wave detection alarm device according to claim 1 or 2, wherein the case is configured to function as a resonator for an alarm generated by the alarm output means.

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