JP6448574B2 - Emergency disaster information receiver - Google Patents

Description

  The present invention relates to an emergency disaster information receiver, and more particularly to an emergency disaster information receiver for receiving and notifying an earthquake early warning.

  An emergency disaster information receiver for receiving and notifying disaster information transmitted from a transmitting station when an emergency such as an earthquake occurs has been presented. For example, a disaster prevention radio (radio disaster prevention radio receiver with radio) or an emergency notification receiver that detects emergency earthquake warning chime sound from radio sound during standby and outputs radio sound from the speaker when detected Has been.

  Further, Patent Document 1 discloses a disaster prevention radio receiver that emits the broadcast content from a speaker when receiving an emergency earthquake warning in a radio broadcast or when receiving a disaster prevention radio broadcast. This disaster prevention radio receiver detects that an earthquake early warning has been issued by detecting a chime sound transmitted together with the earthquake early warning.

  In terrestrial television broadcasting, emergency earthquake bulletins are transmitted in a form that is superimposed on the video and audio being broadcast. However, since a delay occurs in encoding on the transmitter side, decoding on the receiver side, and the like, there is a problem in quick reportability. To solve this problem, ARIB (STD-B31) is a method for transmitting emergency earthquake bulletin information using an AC (Auxiliary Channel) signal for transmitting additional information of terrestrial television broadcasting and terrestrial multimedia broadcasting. Added to the standard of STD-B46). According to this, the earthquake early warning is segment no. It is transmitted using 0 AC signal (carrier).

  For example, in Patent Document 2, when an earthquake early warning is issued from a broadcasting station using an AC signal, the fact is displayed on the display unit and emergency disaster information for generating an alarm sound according to a user setting is disclosed. A receiving device is disclosed. In addition, upon receiving the earthquake early warning, this emergency disaster information receiving device outputs a control signal for safely operating an external device such as an elevator from an output terminal, and also transmits an emergency broadcast to an external television receiving device. A command signal for receiving (power-on command, emergency broadcast channel selection command) is transmitted from the remote control transmitter.

JP 2014-086928 A JP2013-21754A

  As in the disaster prevention radio receiver described in Patent Document 1, in the method of detecting the chime sound of the earthquake early warning from the sound of the radio broadcast, since the analog sound is analyzed, even the sound unrelated to the earthquake early warning is used. When the change in the sound of a specific frequency is similar to the chime sound, a false detection may occur. Also, nationwide broadcasts also detect earthquake early warnings about areas that are not related to where you live (for example, if you live in Tokyo, you can also detect earthquake early warnings for Hokkaido). On the other hand, it may be confused as to whether it is an earthquake early warning for your area. If this continues, there is a risk that the attention to emergency earthquake warnings that are really relevant will be reduced.

  Further, in the emergency disaster information receiving apparatus using the AC signal of Patent Document 2, when video information and audio information related to the emergency earthquake warning from the transmitting station is not transmitted immediately after the AC signal, the video information and audio The output of information is delayed, and there is a problem with quick reporting.

  In view of the above points, an object of the present invention is to provide an emergency disaster information receiver that promptly alerts a corresponding area.

  The emergency disaster information receiver of the present invention includes a receiving unit that receives AC signal information from a broadcasting station, a control storage unit that stores first latitude information and first longitude information of an installation site, a control unit, and an output unit. The control unit includes the second latitude information and the second longitude information of the epicenter acquired from the AC signal information, and the first latitude information and the first longitude information acquired from the control storage unit. A determination value corresponding to a distance between the epicenter and the installation site is obtained, and an alarm is output from the output unit according to the determination value.

  ADVANTAGE OF THE INVENTION According to this invention, the emergency disaster information receiver which alert | reports alert | reporting quickly with respect to an applicable area can be provided.

It is an external view of the emergency disaster information receiver which concerns on Embodiment 1 of this invention. It is a block diagram of the emergency disaster information receiver which concerns on Embodiment 1 of this invention. It is a block diagram of the control memory | storage part which concerns on Embodiment 1 of this invention. It is a block diagram of the emergency earthquake information which concerns on Embodiment 1 of this invention. It is a block diagram of TS signal information concerning Embodiment 1 of the present invention. It is a block diagram of the AC signal information which concerns on Embodiment 1 of this invention. It is flowchart explanatory drawing of the signal processing part which concerns on Embodiment 1 of this invention. It is flowchart explanatory drawing of the control part which concerns on Embodiment 1 of this invention. It is a block diagram of the control memory | storage part which concerns on Embodiment 2 of this invention. It is a block diagram of the conversion table which concerns on Embodiment 2 of this invention.

(Embodiment 1)
Hereinafter, Embodiment 1 of the present invention will be described with reference to the drawings. FIG. 1 is an external view of the emergency disaster information receiver 100. The emergency disaster information receiver 100 includes a display unit 101, an audio output unit 102, and an input unit 103 on the front surface of the main body. In terrestrial television broadcasting (one-segment broadcasting) and terrestrial multimedia broadcasting (V-Low multimedia broadcasting, etc.), information on emergency earthquake bulletins is transmitted on signals for transmitting additional information signals called AC signals. Yes. The emergency disaster information receiver 100 according to the present embodiment receives a broadcast wave by a receiving unit (a one-segment receiver, a V-Low receiver, or the like), monitors an AC signal, and detects emergency earthquake bulletin information. It has an emergency earthquake warning notification function that outputs an alarm.

  The input unit 103 includes a setting button 104, operation buttons 105 and 106, and a determination button 107. The emergency disaster information receiver 100 includes a volume dial 108 on the right side of the main body.

  The display unit 101 is a character display unit such as an LCD (Liquid Crystal Display) or a VFD (Vacuum Fluorescent Display) disposed on the front of the main body. The audio output unit 102 is disposed on the left side of the front of the main body and outputs an alarm sound as a speaker. The operation buttons 105 and 106 function as a − (return) button and a + (forward) button for performing channel selection, region setting, and the like when the emergency disaster information receiver 100 is set.

  The volume dial 108 is a dial arranged on the right side of the main body for setting the alarm volume and the like. The position of the volume dial 108 of the present embodiment is arranged on the back side so that a part protrudes from the right side of the main body.

  FIG. 2 is a configuration diagram of the emergency disaster information receiver 100. The emergency disaster information receiver 100 includes an antenna 201, a receiving unit 202, a signal processing unit 203, a signal processing storage unit 204, a microcomputer 205, and an output unit 206. The microcomputer 205 includes a control unit 207 and a control storage unit 208. The output unit 206 includes an audio processing unit 209, an image processing unit 210, an audio output unit 102, and a display unit 101.

  The broadcast signal input from the antenna 201 is subjected to processing such as decoding in a receiving unit 202 configured by a module or the like, and information including video information, audio information, and AC signal information is TS (Transport Stream) signal information. It is output to the signal processing unit 203.

  The signal processing unit 203 extracts AC signal information from the TS signal information and outputs it to the control unit 207. Further, the signal processing unit 203 extracts audio information from the TS signal information and outputs it to the audio processing unit 209 or stores it in the signal processing storage unit 204 via the control unit 207.

  The control unit 207 performs control such as initialization of the reception unit 202. In addition, when the control unit 207 receives AC signal information from the signal processing unit 203, an emergency disaster is generated based on latitude information (second latitude information) and longitude information (second longitude information) included in the AC signal information. A determination value L corresponding to the distance between the installation site where the information receiver 100 is installed and the epicenter is obtained. The control unit 207 outputs an alarm from the output unit 206 according to the determined determination value L.

  The audio processing unit 209 decodes the input audio signal and causes the audio output unit 102 to output audio. In addition, the image processing unit 210 decodes the input image signal and causes the display unit 101 to display an image.

  FIG. 3 is a configuration diagram of the control storage unit 208. The control storage unit 208 includes a fixed character table 301, a fixed sound table 302, and set latitude / longitude information 303.

  In the fixed character table 301, character data for outputting the alarm contents of the earthquake early warning is written in advance. In the standard voice table 302, standard voice data for voice output of alarm contents of emergency earthquake information is registered in advance.

  In the set latitude / longitude information 303, latitude information (first latitude information) and longitude information (first longitude information) of the installation site where the emergency disaster information receiver 100 is installed are registered in advance.

  FIG. 4 is a configuration diagram of the emergency earthquake information 400 received by the receiving unit 202 via the antenna 201. The emergency earthquake information 400 includes video information 401, audio information 402, and AC signal information 403. The Japan Meteorological Agency announces information related to the earthquake early warning when there is a predicted earthquake occurrence area greater than the predetermined maximum seismic intensity. A transmitting station such as a television transmits the emergency earthquake information 400 included in the segment of the broadcast signal based on this information.

  The AC carrier in the segment includes information regarding the earthquake motion alarm source as AC signal information 403. Details will be described later with reference to FIG.

  FIG. 5 is a configuration diagram of the TS signal information 500. The TS signal information 500 includes a sync byte 501, an indicator 502, and a length 503 in the header part. The TS signal information 500 includes AC signal information 403 in the data portion. The receiving unit 202 includes the AC signal information 403 of the emergency earthquake information 400 in the TS signal information 500 and transmits it to the signal processing unit 203. In this figure, an example in which AC signal information 403 is included in the data portion of TS signal information 500 is shown, but video information 401 or audio information 402 may be included as the data portion. In this case, the reception unit 202 can transmit the video information 401 or the audio information 402 to the signal processing unit 203 in association with the AC signal information 403 of the other TS signal information 500.

  FIG. 6 is a configuration diagram of the AC signal information 403. The AC signal information 403 includes a configuration identification 601, a start / end flag 602, a signal identification 603, a current time 604, a page type 605, and earthquake motion information 606. The information included in the AC signal information 403 is defined in ARIB STD-B31 and STD-B46, and other information can be included in the AC signal information 403 as appropriate.

  Hereinafter, each piece of information included in the AC signal information 403 will be described according to the format of ARIB STD-B31 and STB-B46. The configuration identification 601 is information indicating whether the AC signal information is transmission of earthquake motion warning information. Since the AC signal information itself is used for transmission of other additional information in addition to the earthquake motion warning, it is determined by this configuration identification 601 whether the AC signal information is information related to an earthquake. The start / end flag 602 is information indicating the start or end of transmission of earthquake motion warning information. The signal identification 603 is information representing the type of detailed earthquake motion warning information. The current time 604 is current time information at which earthquake motion warning information is transmitted. The ground motion information 606 is information related to the ground motion alarm source transmitted when the page type 605 is “1”. In the present embodiment, a case where the page type 605 is “1” will be described.

  When the page type 605 is “1”, the earthquake motion information 606 includes latitude information 621, longitude information 622, depth information 615, and occurrence time 616, as shown in FIG. The latitude information 621 includes a north latitude / south latitude flag 611 and a latitude 612. The longitude information 622 includes a west longitude east longitude flag 613 and a longitude 614.

  The north latitude / south latitude flag 611 represents north latitude or south latitude by “0” or “1”, respectively. The east longitude and west longitude flags 613 represent east longitude and west longitude by “0” or “1”, respectively. Latitude 612 and longitude 614 are represented by binary numbers. The depth information 615 is the depth of the epicenter. The occurrence time 616 is the occurrence time of the earthquake motion.

  Next, the operation of the emergency disaster information receiver 100 will be described. First, when the emergency disaster information receiver 100 is turned on, initial settings of the receiving unit 202, signal processing unit 203, and display unit 101, reception channel settings for terrestrial television broadcasting and terrestrial multimedia broadcasting, and the like are performed. Done.

  The receiving channel is a broadcasting station (for example, a broadcasting station with a good radio wave condition or a broadcasting station corresponding to a region) that is received by operating the input unit 103 such as the operation buttons (channel selection buttons) 105 and 106. Is determined by selecting a channel. The control unit 207 instructs the reception unit 202 through I2C (Inter Integrated Circuit) to tune the determined reception channel.

  In addition, preset latitude / longitude information 303 is set in the control storage unit 208 in advance. For example, the receiving unit 202 receives a GPS signal via the antenna 201. The receiving unit 202 obtains latitude information and longitude information of the installation site where the emergency disaster information receiver 100 is installed from the received GPS signal. The control unit 207 receives the obtained latitude information (first latitude information) and longitude information (first longitude information) from the receiving unit 202 and stores them as the set latitude / longitude information 303 in the control storage unit 208. The set latitude / longitude information 303 can also be set by manual input. In this case, the control unit 207 displays the latitude information (first latitude information) and longitude information (first latitude information) input by the user as the installation location where the emergency disaster information receiver 100 is installed. Is stored as set latitude / longitude information 303. By a setting completion operation by the user, a standby state (speaker output or character display off state) is entered.

  The signal processing unit 203 receives an instruction from the control unit 207 through a UART (Universal Asynchronous Receiver Transmitter) and performs initial setting. After that, the signal processing unit 203 starts processing of the TS signal necessary for detecting the earthquake early warning using the AC signal.

  Processing of the signal processing unit 203 will be described. FIG. 7 is an explanatory diagram of a flowchart of the signal processing unit 203. In step S <b> 100, the signal processing unit 203 determines whether an AC header indicating that AC signal information is included in the TS signal information 500 output from the receiving unit 202 is transmitted. For example, the AC header has information of 1 byte in the sync byte 501, 1 byte in the indicator 502, and 2 bytes in the length 503. The sync byte 501 represents AC signal information if 0xB0 (hexadecimal B0), and other video and audio information if 0x47. The indicator 502 indicates a start packet if 0x80, an end packet if 0x20, and an intermediate packet if 0x40. The length 503 represents the remaining number of bytes in hexadecimal. One packet is composed of 188 bytes including the header part and the data part, and 0x00 is continuously transmitted until the part less than 188 bytes reaches 188 bytes.

  If the sync byte 501 is 0xB0 and the signal processing unit 203 detects the header part as an AC header, the signal processing unit 203 proceeds to the process of step S110, and otherwise, repeats the process of step S100.

  In step S <b> 110, the signal processing unit 203 takes in data (AC signal information 403) following the AC header of the TS signal information 500 and stores it in the signal processing storage unit 204 such as a FIFO memory in the signal processing unit 203.

  In step S120, the signal processing unit 203 determines whether the last byte of the AC signal information 403 has been taken. The signal processing unit 203 proceeds to the process of step S130 if the last byte has been fetched, and returns to the process of step S110 if not fetched. In the present embodiment, the 184th byte of data is the last byte, and the number of bytes represented by 2 bytes of length 503 is valid data as the AC signal information 403.

  In step S <b> 130, the signal processing unit 203 converts the format of the remaining data excluding the header of the TS signal information 500 into a format for sending to the control unit 207. When the 1-bit data of the AC signal information 403 from the receiving unit 202 is converted into 1-byte data (hexadecimal 0xFF for binary 0b1 and 0x00 for 0b0) and sent, the signal processing unit 203 Converts the format of the data from 1 byte to 1 bit (hexadecimal 0xFF is binary 0b1 and 0x00 is 0b0). Data whose format has been converted for each byte is deleted from the signal processing storage unit 204.

  In step S140, the signal processing unit 203 outputs the format-converted data of the AC signal information 403 from the UART to the control unit 207 every 8 bits. When the data output ends, the process returns to the AC header detection process in step S100.

  Although UART is used here, another communication method such as 8-bit parallel communication may be used instead.

  FIG. 8 is a flowchart for explaining the control unit 207. The controller 207 outputs an emergency earthquake warning according to this flow. When the control unit 207 enters a standby state (speaker output or character display off state) by a setting completion operation by the user, the control unit 207 starts detection processing of a signal transmitted by the signal processing unit 203.

  In step S200, the control unit 207 determines whether the AC signal information 403 is received from the signal processing unit 203 through the UART. If the AC signal information 403 is received, the process proceeds to step S210. If the AC signal information 403 is not received, the process of step S200 is repeated.

  In step S <b> 210, the control unit 207 takes in the AC signal information 403 received from the UART and stores it in the control storage unit 208 inside the microcomputer 205.

  In step S220, the control unit 207 determines whether the last byte of the AC signal information 403 has been taken. If the last byte has been fetched, the process proceeds to step S230, and if not, the process returns to step S210. The final byte is determined by determining the data amount of the packet in advance and determining whether the number of received bytes matches the predetermined data amount of the packet, or the transmission byte at the head of the data transmitted from the signal processing unit 203 This is performed by a method of determining whether or not the number of received bytes matches the number of transmitted bytes in the header by attaching a header that indicates the number.

  In step S230, the control unit 207 determines whether the received AC signal information 403 is an emergency earthquake bulletin. If it is an emergency earthquake bulletin, the process proceeds to step S240. If not, the control unit 207 proceeds to the determination process in step S200. Return.

Regarding the method of determining the earthquake early warning, in the data in the format of ARIB STD-B31 and STD-B46, the control unit 207 determines that B ₀ (hereinafter, B represents a bit value and a subscript represents a bit number) to B ₂₀₃ of 204. Among the bit data, it is defined that an emergency earthquake warning is determined when B ₁ to B ₃ (configuration identification 601) are binary numbers 0b001 or 0b110, and the other is determined not to be an emergency earthquake warning. If the control unit 207 determines that the AC signal information 403 received from the signal processing unit 203 is an emergency earthquake warning, the process proceeds to step S240. In the present embodiment, in order to explain the case where the page type 605 is “1” (that is, the case where the information about the epicenter is included in the earthquake motion information 606), the AC signal information 403 is the emergency earthquake early warning in step S230. If determined, the control unit 207 performs the process of step S240. When the page type 605 is “0” in step S230, the control unit 207 may return to the process of step S200. Alternatively, when the page type 605 is “0”, since the earthquake motion information 606 includes information indicating the target area of the earthquake motion warning, the control unit 207 installs the emergency disaster information receiver 100 in the target region. When the ground is included, processing such as alarm output may be performed.

  In step S240, the control unit 207 calculates a determination value L corresponding to the epicenter and the location where the emergency disaster information receiver 100 is installed. For example, the determination value L can be the distance between the epicenter and the place where the emergency disaster information receiver 100 is installed. The determination value L can be a value corresponding to the distance between the epicenter and the place where the emergency disaster information receiver 100 is installed.

  First, the control unit 207 acquires latitude information 621 (north latitude / south latitude flag 611, latitude 612) and longitude information 622 (west longitude / east longitude flag 613, longitude 614) from the AC signal information 403. The control unit 207 attaches positive and negative signs to the latitude 612 and longitude 614 values based on the north latitude / south latitude flag 611 and the west longitude / east longitude flag 613. For example, “+” indicates that the north latitude / south latitude flag 611 is “0” (north latitude), and “−” indicates that the north latitude / south latitude flag 611 is “1” (south latitude). The case where the west longitude flag 613 is “0” (east longitude) is set to “+”, and the case where the west longitude flag 613 is “1” (west longitude) is set to “−”. The positive and negative signs may be reversed depending on the calculation method of the determination value. In this way, the control unit 207 obtains the latitude and longitude values of latitude information (second latitude information) 621 and longitude information (second longitude information) 622 reflecting the north latitude south latitude and the west longitude east longitude.

  Further, the control unit 207 refers to the control storage unit 208 as position information of the installation location of the emergency disaster information receiver 100, and acquires set latitude / longitude information (first latitude information, first longitude information) 303. Similarly to the latitude information 621 and longitude information 622 of the AC signal information 403, the set latitude / longitude information 303 can include north latitude / south latitude flag, latitude, west longitude / east longitude flag, and longitude data. The control unit 207 uses the latitude and longitude values of the installation site acquired from the set latitude / longitude information 303 to calculate the determination value L. Note that the positive and negative signs representing north latitude and south latitude and the positive and negative signs representing east longitude and west longitude are the latitude and longitude values of the installation site, similar to the latitude information 621 and longitude information 622 of the epicenter acquired from the AC signal information 403. It can be attached.

  For the calculation of the determination value L, a method according to the processing capability of the arithmetic unit such as the microcomputer 205 can be applied. The control unit 207 calculates, as the determination value L, the distance between the installation location of the emergency disaster information receiver 100 and the epicenter and a value corresponding to the distance.

In the example of calculating the value according to the distance, the control unit 207 obtains the determination value L by the following equation (1).
L = {(y ₂ −y ₁ ) ² + (x ₂ −x ₁ ) ² } ^1/2 (1)
[However, L is a judgment value, y ₁ is the latitude of the first latitude information of the installation site, y ₂ is the latitude of the second latitude information of the epicenter, x ₁ is the longitude of the first longitude information of the installation site, and x ₂ is Indicates the longitude of the second longitude information of the epicenter. The units of y ₁ , y ₂ , x ₁ , x ₂ are degrees or radians. ]

For example, a point A of latitude (north latitude) y ₂ = 42.00 [°] and longitude (east longitude) x ₂ = 142.8 [°] is assumed as the epicenter, and latitude (north latitude) y ₁ = Assuming that the point B of 39.42 [°] and longitude (east longitude) x ₁ = 141.08 [°] is the installation site, the determination value L _AB at the point B is obtained as approximately 3.10 according to the equation (1). If the point C of latitude (northern latitude) y ₁ = 35.40 [°] and longitude (east longitude) x ₁ = 139.45 [°] further southwest of the point B is the installation site, the judgment value L _AC at the point C Is found to be approximately 47.11 from equation (1).

  In the calculation method of the judgment value L according to equation (1), if the latitude difference and the radial difference between the epicenter and the installation site are sufficiently smaller than 90 degrees, respectively, the distance between the epicenter and the installation site may not be directly obtained. The determination value L that monotonously increases as the distance increases can be obtained. Therefore, the determination value L corresponding to the distance between the epicenter and the installation site can be obtained by a simple calculation process, and the distance between the epicenter and the installation site can be determined. As described above, the determination value L can be calculated without obtaining an accurate distance.

Further, in the example of calculating the distance, the determination value L can be obtained using the Huveni's formula, spherical trigonometry, or the like. In the method using the Huveni's equation, the control unit 207 obtains the distance between the epicenter and the installation site as a determination value L by the following equations (2) and (3).
L = [{(y ₁ −y ₂ ) M} ² + {(x ₁ −x ₂ ) N · cos A} ² ] ^1/2 (2)
A = (y ₁ + y ₂ ) / 2 (3)
[Where, L is a judgment value (distance), y ₁ is the latitude of the first latitude information of the installation site, y ₂ is the latitude of the second latitude information of the epicenter, x ₁ is the longitude of the first longitude information of the installation site, x ₂ longitude of the second longitude information epicenter, M is the earth's meridian radius of curvature, N represents represents a U Tri vertical radius of curvature of the earth. The unit of y ₁ , y ₂ , x ₁ , x ₂ is radians. ]

  In these formulas (2) and (3), the earth can be regarded as an ellipsoid having a rotation axis connecting the north and south poles as a short axis, and an accurate distance on the spherical surface between the epicenter and the installation site can be obtained.

Further, in the method using the spherical trigonometry, the control unit 207 obtains the following equation (4) and equation (5) using the distance between the epicenter and the installation site as a determination value.
L = R · x (4)
x = cos ⁻¹ {siny ₁ · siny ₂ + cosy ₁ · cosy ₂ · cos (x ₂ −x ₁ )} (5)
[Where, L is a judgment value (distance), y ₁ is the latitude of the first latitude information of the installation site, y ₂ is the latitude of the second latitude information of the epicenter, x ₁ is the longitude of the first longitude information of the installation site, x ₂ longitude of the second longitude information epicenter, R represents a mean radius of the Earth. The units of x, y ₁ , y ₂ , x ₁ , x ₂ are radians. ]

  In the equations (4) and (5), the earth is regarded as a sphere having a radius R, and the distance on the spherical surface between the epicenter and the installation site can be obtained.

  When the process of step S240 is completed, the control unit 207 determines whether or not the emergency disaster information receiver 100 needs to output an alarm according to the determined determination value L in step S250.

  For example, the first threshold value and the second threshold value are stored in advance in an appropriate storage unit such as the control storage unit 208. Here, the second threshold value is larger than the first threshold value. When the determination value L is equal to or less than a predetermined first threshold value, the control unit 207 is a highly important emergency earthquake warning because the distance between the epicenter and the installation location of the emergency disaster information receiver 100 is close. judge. Further, the control unit 207 determines that the earthquake earthquake warning is of low importance when the determination value L is greater than the first threshold value and less than or equal to the second threshold value. The control unit 207 determines that alarm output (first alarm output, second alarm output) needs to be performed when the earthquake early warning is high in importance or low in step S250, and the process of step S260 is performed. Proceed to

  In addition, when the determination value L is larger than the second threshold, the control unit 207 is not important because the distance between the epicenter and the place where the emergency disaster information receiver 100 is installed is not important (may be ignored). It is determined that Therefore, the control unit 207 returns to the process of step S200 because it is not necessary to issue an alarm when the emergency earthquake warning is not important.

The determination processing in step S250 will be described using an example in which the point A described above is the epicenter and the points B and C are the installation sites. For example, when the determination value L is obtained by Expression (1), the first threshold is 10 and the second threshold is 30. Then, since the determination value L _AB is about 3.10 at the point B, the control unit 207 determines that the determination value L is equal to or less than the first threshold value, and proceeds to the process of step S260. Further, since the judgment value _{L AC} point C is about 47.11, the control unit 207 determines that the determination value L is larger than the second threshold value, the process returns to step S200.

  In step S <b> 260, the control unit 207 outputs an alarm from the output unit 206. As the alarm output, display output by the display unit 101 and audio output by the audio output unit 102 are performed. In addition, the control unit 207 can output a standard alarm content that the emergency disaster information receiver 100 has in advance, or can output video information 401 or audio information 402 received together with the AC signal information 403.

  When performing standard display output, character data and image data corresponding to the first alarm output or the second alarm output are stored in advance in the standard character table 301 of FIG. The control unit 207 acquires character data and image data corresponding to the importance of the earthquake early warning determined in step S250 from the standard character table 301, sends the character data and image data to the image processing unit 210, and causes the display unit 101 to display and output them. For example, the control unit 207 acquires character data “Earthquake Early Warning” indicating a warning from the fixed character table 301 of the control storage unit 208. Then, the control unit 207 transmits the character data “Earthquake Early Warning” to the image processing unit 210. The image processing unit 210 causes the display unit 101 to display the character data received from the control unit 207. As a result, the characters “Earthquake Early Warning” can be displayed on the display unit 101. Further, the control unit 207 may display the latitude and longitude values indicated by the latitude information 621 and longitude information 622 of the epicenter acquired from the AC signal information 403 from the display unit 101 at the time of alarm.

  Further, when the control unit 207 determines that the earthquake early warning is the target of the first alarm output with high importance, the control unit 207 flashes a part or the whole of the display unit 101 (repeats all on and all off in a short time). ) Can be displayed. Further, when the importance is low, the control unit 207 displays characters as they are without flashing the display unit 101 in step S260, and performs case classification such that the notification level is lower than the first output operation. Can do. As a result, it is possible to output a plurality of levels of alarms with different notification levels depending on the importance.

  When performing standard audio output, audio data corresponding to the first alarm output or the second alarm output is stored in advance in the standard audio table 302 of FIG. The control unit 207 acquires voice data corresponding to the importance level of the earthquake early warning determined in step S <b> 250 from the standard voice table 302, sends it to the voice processing unit 209, and outputs it from the voice output unit 102. For example, the control unit 207 acquires voice data “Earthquake Early Warning” indicating a warning from the standard voice table 302 of the control storage unit 208. Then, the control unit 207 transmits audio data “Earthquake Early Warning” to the audio processing unit 209. The audio processing unit 209 causes the audio output unit 102 to output the audio data received from the control unit 207. Thereby, the sound of “Earthquake Early Warning” can be emitted from the sound output unit 102. Further, the control unit 207 may cause the sound output unit 102 to output the latitude and longitude values indicated by the latitude information 621 and longitude information 622 of the epicenter acquired from the AC signal information 403 at the time of an alarm.

  Further, when the control unit 207 determines that the earthquake early warning is the target of the first alarm output with high importance, the control unit 207 can output the sound at the maximum volume regardless of the volume setting. In addition, when the importance level is low, the control unit 207 can output the sound with the normal sound volume according to the volume setting. As a result, it is possible to output a plurality of levels of alarms with different notification levels depending on the importance.

  As described above, the control unit 207 can output an alarm from the output unit 206 according to the importance according to the determination value L. Therefore, it is possible to provide the user with appropriate information related to the earthquake and prompt the user to prepare for the earthquake motion.

  Next, a case where an emergency earthquake warning is notified by the video information 401 received from the receiving unit 202 will be described. For example, the reception unit 202 includes the video information 401 in the data portion of the TS signal information 500 and transmits the video information 401 in association with the AC signal information 403 of the other TS signal information 500. When the signal processing unit 203 determines in step S100 of FIG. 7 that the video information 401 associated with the other AC signal information 403 has been received, even when the AC header is not detected in the TS signal information 500, Proceed to step S110. The signal processing unit 203 captures the video information 401 in steps S110 and S120, performs format conversion in step S130, and transmits the video information 401 to the control unit 207 in step S140.

  If the control unit 207 determines in step S200 in FIG. 8 that the video information 401 associated with any AC signal information 403 has been received, the control unit 207 captures data in steps S210 and S220. In step S230, it is determined that the AC signal information 403 associated with the video information 401 is an earthquake early warning (S230, Y), and if it is determined in steps S240 and S250 that an alarm is required (S250, Y). ), The process proceeds to S260. In step S260, the control unit 207 transmits the video information 401 to the image processing unit 210. The image processing unit 210 causes the display unit 101 to display the video information 401.

  Further, the emergency disaster information receiver 100 can notify the warning of emergency earthquake warning by the voice information 402 received from the receiving unit 202. For example, the reception unit 202 includes the audio information 402 in the data portion of the TS signal information 500 and transmits the audio information 402 in association with the AC signal information 403 of the other TS signal information 500. When the signal processing unit 203 determines in step S100 in FIG. 7 that the audio information 402 associated with the other AC signal information 403 is received even when the AC header is not detected in the TS signal information 500, Proceed to step S110. The signal processing unit 203 captures the audio information 402 in steps S110 and S120, performs format conversion in step S130, and then transmits the audio information 402 to the control unit 207 in step S140.

  If the control unit 207 determines in step S200 in FIG. 8 that the audio information 402 associated with any AC signal information 403 has been received, the control unit 207 captures data in steps S210 and S220. If it is determined in step S230 that the AC signal information 403 associated with the audio information 402 is an emergency earthquake warning (S230, Y), and if it is determined that an alarm is required in steps S240 and S250 (S250, Y) ), The process proceeds to S260. In step S260, the control unit 207 transmits the audio information 402 to the audio processing unit 209. The audio processing unit 209 causes the audio output unit 102 to output audio information 402.

  In step S260, it can be determined in advance whether the alarm output is to be output by the display output method or the sound output method. Further, alarm output may be performed by combining display output or audio output.

  When the alarm output in step S260 ends after the lapse of a certain time, the control unit 207 enters a standby state (voice output or character display off state), and returns to the determination process in step S200.

  As described above, according to the present embodiment, the necessity of the alarm output and the notification level can be determined by obtaining the determination value L from the position of the installation site and the epicenter. When setting the latitude information and longitude information of the installation location based on the GPS signal, it is possible to automatically set the latitude information and longitude information of the installation location without the need for the user to set.

  Further, since the necessity of alarm output can be individually determined according to the installation location by calculating the determination value L, an appropriate alarm can be notified to the user.

  In addition, since the emergency disaster information receiver 100 according to the present embodiment outputs an alarm to the surroundings based on the AC signal information 403, a voice signal may be transmitted with a delay from the transmitting station when receiving an earthquake early warning. Even when it takes time to demodulate and decode the audio signal, it is possible to quickly output the earthquake early warning.

(Embodiment 2)
Next, Embodiment 2 will be described. The emergency disaster information receiver 100 according to the present embodiment stores the set latitude / longitude information 303 in advance when the user inputs an area name.

  FIG. 9 is a configuration diagram of the control storage unit 208A. The emergency disaster information receiver 100 of the present embodiment includes a control storage unit 208A instead of the control storage unit 208 of the first embodiment. In addition, about the other structure similar to the emergency disaster information receiver 100 of Embodiment 1, the same code | symbol is attached | subjected and the description is abbreviate | omitted or simplified. The control storage unit 208A includes a fixed character table 301, a fixed sound table 302, set latitude / longitude information 303, and a conversion table 304. The configuration of the fixed character table 301, the fixed sound table 302, and the set latitude / longitude information 303 is the same as that of the first embodiment.

  FIG. 10 is a configuration diagram of the conversion table 304. The conversion table 304 stores latitude information 702 and longitude information 703 corresponding to the area name 701. As the region name 701, for example, a region name in each prefecture or a region name in each prefecture and municipality grouped by the standard region code can be stored. In the latitude information 702 and the longitude information 703, for example, latitude information and longitude information at the prefectural office of the area corresponding to the area name 701, the municipal office or the location of the government office are stored.

  The setting work of the setting latitude / longitude information 303 based on the area name is performed before the processing of the flowcharts shown in FIGS. 7 and 8 is performed. For example, the area name “Saitama City” where the emergency disaster information receiver 100 is installed is input from the input unit 103 by the user. The control unit 207 refers to the conversion table 304 of the control storage unit 208 and acquires the latitude information 702 and longitude information 703 of the city hall corresponding to the input area name 701 “Saitama City”. The control unit 207 stores the acquired latitude information 702 and longitude information 703 as set latitude / longitude information 303 (first latitude information, first longitude information) in the control storage unit 208. Thereafter, when the emergency disaster information receiver 100 receives the emergency earthquake information 400, the emergency disaster information receiver 100 issues a warning by the same processing as the flowcharts of FIGS. 7 and 8 shown in the first embodiment.

  Moreover, the emergency disaster information receiver 100 of this embodiment can output the area name used as the epicenter in step S260 of FIG. Specifically, in step S260, the control unit 207 refers to the conversion table 304 and obtains a region name 701 corresponding to the region represented by the latitude information 621 and the longitude information 622 included in the AC signal information 403 received in step S200. . As a method for specifying the area name 701, for example, the position represented by latitude information 621 and longitude information 622 included in the AC signal information 403, and the position represented by latitude information 702 and longitude information 703 stored in the conversion table 304 The area name 701 with the shortest distance from As the distance calculation method, the formulas (2) and (3), or the formulas (4) and (5) described in the first embodiment can be used. Further, instead of the distance, the determination value L may be obtained by Expression (1), and the region name 701 having the smallest determination value L may be obtained as the region name of the epicenter. The control unit 207 can display the obtained area name 701 together with the alarm output (first alarm output, second alarm output) from the display unit 101 or output from the audio output unit 102.

  As described above, according to the emergency disaster information receiver 100 of the present embodiment, it is possible to determine whether the installation location is a notification target, and to exclude irrelevant emergency earthquake warnings from the notification target. Also, the earthquake early warning based on the AC signal of one-segment broadcasting or V-Low multimedia broadcasting is a digital signal dedicated to the receiver, and is more accurate than the chime sound of the radio emergency earthquake warning that is a notification sound for humans. Therefore, an emergency disaster information receiver with few false detections can be configured. In addition, earthquake early warnings by terrestrial television broadcasts and terrestrial multimedia broadcasts use AC signals that have less delay than video and audio for television broadcasts, so earthquakes that are earlier than video and audio that flow on televisions. You can tell breaking news.

  As mentioned above, although embodiment of this invention was described, this invention is not limited by this embodiment, It can implement with a various form.

  For example, in the present embodiment, the signal processing unit 203 and the audio processing unit 209 are configured as processing units different from the control unit 207 of the microcomputer 205, but an FPGA (field-programmable gate array), a DSP (Digital Signal Processor), and the like. Any device capable of high-speed processing can be configured as one processing unit. Further, the receiving unit 202 and the signal processing unit 203 may be configured as one processing unit.

  The AC signal information 403 includes depth information 615 that is information related to the depth of the epicenter. The control unit 207 can reflect the depth information 615 in the calculation of the determination value L in step S240 in FIG. For example, when the depth indicated by the depth information 615 is deep, a calculation method that increases the determination value L can be used. Then, based on the determination value L obtained in consideration of the depth, it may be determined in step S250 whether an emergency earthquake warning requiring alarm output is received.

  The AC signal information 403 includes an earthquake occurrence time 616. The control unit 207 obtains the distance from the epicenter to the installation site shown in the first embodiment as the determination value L, and the occurrence time 616 of the earthquake and the current time 604 in the AC signal information 403 or the emergency disaster information receiver 100 The time for the seismic wave to reach the area where the emergency disaster information receiver 100 is installed may be calculated based on the time of the internal clock. The control unit 207 can notify the display unit 101 and the audio output unit 102 of the time that the seismic wave arrives. Therefore, it is possible to prompt the user to prepare for earthquake motion in advance.

  In the present embodiment, in step S250, the notification level is divided into two stages using two threshold values (first threshold value, second threshold value), but the notification level is divided according to three or more threshold values, It is possible to determine whether or not the alarm output is necessary in Step S260 by providing one threshold value for whether or not to notify.

  The emergency disaster information receiver 100 may be configured to include either the display unit 101 or the audio output unit 102 as the output unit 206 and perform display output or audio output. Furthermore, the emergency disaster information receiver 100 may store part or all of the data stored in the control storage unit 208 in an appropriate storage unit provided outside the microcomputer 205.

  The processing in the embodiment of the present invention is applied to various apparatuses as a program that can be realized by a computer, for example, written in a storage medium such as a magnetic disk, an optical disk, or a semiconductor memory, or transmitted through a communication medium. It is also possible to apply to various devices. As described above, by storing the processing described in each embodiment in a desired storage medium and causing the program to be executed by another computer or the like, it is possible to obtain the same operation and effect as in the case of using the apparatus of each embodiment. The computer is not limited to the computer built in the apparatus described in each embodiment, but can read a program stored in a storage medium and can perform a control operation according to the read program. Includes any computer equipped with a computing device.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention and are also included in the invention described in the claims and the equivalent scope thereof.

DESCRIPTION OF SYMBOLS 100 Emergency disaster information receiver 101 Display part 102 Audio | voice output part 103 Input part 104 Setting button 105 Operation button 106 Operation button 107 Determination button 108 Volume dial 201 Antenna 202 Reception part 203 Signal processing part 204 Signal processing memory | storage part 205 Microcomputer 206 Output part 207 Control unit 208 Control storage unit 208A Control storage unit 209 Audio processing unit 210 Image processing unit 301 Standard character table 302 Standard audio table 303 Setting latitude / longitude information 304 Conversion table 400 Emergency earthquake information 401 Video information 402 Audio information 403 AC signal information 500 TS signal information 501 Sync byte 502 Indicator 503 Length 601 Configuration identification 602 Start / end flag 603 Signal identification 604 Current time 605 Page type 606 Earthquake motion information 61 North south flag 612 latitude 613 west longitude flag 614 longitude 615 depth information 616 occurrence time 621 latitude information (second longitude information) 622 longitude information (second longitude information)
701 area name 702 latitude information 703 longitude information A to C point L, L _AB , _LAC judgment value R radius x ₁ , x ₂ longitude y ₁ , y ₂ latitude

Claims (8)

A receiving unit for receiving AC signal information from a broadcasting station;
A control storage unit for storing the first latitude information and the first longitude information of the installation site;
A control unit;
An output unit including an image processing unit and a display unit ;
With
The controller is
From the second latitude information and second longitude information of the epicenter acquired from the AC signal information, and the first latitude information and the first longitude information acquired from the control storage unit, the epicenter and the installation location seek distance as determination values,
The image processing unit
When the determination value is less than or equal to the first threshold, as the first alarm output, the control unit flashes and flashes a part or the whole of the display unit, and then outputs the alarm content of the emergency earthquake warning text The fixed character data is displayed on the display unit,
When the determination value is greater than the first threshold and less than or equal to the second threshold, the fixed character data is displayed on the display unit as a second alarm output having a lower notification level than the first alarm output.
Emergency disaster information receiver characterized by that. The receiving unit obtains the first latitude information and the first longitude information of the installation site from the received GPS signal,
The control unit stores the obtained first latitude information and the first longitude information in the control storage unit.
The emergency disaster information receiver according to claim 1. It has an input part,
The control unit stores the first latitude information and the first longitude information input from the input unit in the control storage unit.
The emergency disaster information receiver according to claim 1 or 2, characterized in that It has an input part,
The control storage unit has a conversion table for storing latitude information and longitude information corresponding to the area name,
The controller is
Refer to the conversion table, obtain the latitude information and the longitude information according to the region name input from the input unit,
Storing the latitude information and the longitude information in the control storage unit as the first latitude information and the first longitude information;
The emergency disaster information receiver according to any one of claims 1 to 3. The emergency disaster information receiver according to any one of claims 1 to 4, wherein the control unit obtains the determination value by the following equation (1).
L = {(y ₂ −y ₁ ) ² + (x ₂ −x ₁ ) ² } ^1/2 (1)
[Where L is the determination value, y ₁ is the latitude of the first latitude information, y ₂ is the latitude of the second latitude information, x ₁ is the longitude of the first longitude information, and x ₂ is the second longitude information. Represents the longitude of The emergency disaster information receiver according to any one of claims 1 to 4, wherein the control unit obtains the determination value by the following formulas (2) and (3).
L = [{(y ₁ −y ₂ ) M} ² + {(x ₁ −x ₂ ) N · cos A} ² ] ^1/2 (2)
A = (y ₁ + y ₂ ) / 2 (3)
[Where L is the determination value, y ₁ is the latitude of the first latitude information, y ₂ is the latitude of the second latitude information, x ₁ is the longitude of the first longitude information, and x ₂ is the second longitude information. , M represents the Earth's meridian radius of curvature, N represents the Earth's tangential radius of curvature, and y ₁ , y ₂ , x ₁ , x ₂ are in radians] The emergency disaster information receiver according to any one of claims 1 to 4, wherein the control unit obtains the determination value by the following formulas (4) and (5).
L = R · x (4)
x = cos ⁻¹ {siny ₁ · siny ₂ + cosy ₁ · cosy ₂ · cos (x ₂ −x ₁ )} (5)
[Where L is the determination value, y ₁ is the latitude of the first latitude information, y ₂ is the latitude of the second latitude information, x ₁ is the longitude of the first longitude information, and x ₂ is the second longitude information. And R represents the average radius of the earth, and the units of x, y ₁ , y ₂ , x ₁ , x ₂ are radians] The receiving unit, emergency disaster information receiver according to any of claims 1 to 7, characterized in that receiving the AC signal information included in the one-segment broadcast or V-Low multimedia broadcasting.

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