JP2012023641A - Radio receiver for emergency broadcast - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radio receiver for an emergency broadcast which enables contents of emergency broadcast to be transmitted certainly through a visual and auditory sense.SOLUTION: A radio receiver for an emergency broadcast comprises: a detection part 12 detecting a plurality of sequential DTMF signals included in a radio broadcast signal received by a reception part 13; a storage part 11 storing disaster information to be displayed corresponding to a predetermined combination of the plurality of the DTMF signals; a determination part 101 determining whether or not a plurality of the detected DTMF signals are the predetermined combinations; a display processing part 102 displaying the disaster information corresponding to the combination on a liquid-crystal display panel 3 and an LED display device 4, when it is determined that the DTMF signals are the predetermined combinations; and an output processing part 103 performing an audio output from a speaker 2, when it is determined that the DTMF signals are the predetermined combinations.

Description

  The present invention relates to an emergency broadcast radio receiver capable of reporting emergency broadcasts related to disaster prevention or disasters.

  In Japan, natural disasters such as earthquakes, tsunamis, typhoons, and torrential rains occur every year. To prepare for such disasters, it is necessary to provide disaster prevention or disaster-related information to residents in the target area accurately and quickly. It has been requested.

  Provision of information related to disaster prevention or disaster is transmitted to residents in the target area through television broadcasting, radio broadcasting, and disaster prevention administrative radio, but the receiver is turned off at midnight. If this is the case, there is a problem that information is not transmitted and the response to the disaster is delayed. In addition, in the case of a disaster that occurs locally, such as torrential rain, providing information through wide-area broadcasting often causes highly urgent information to be provided to unrelated areas. There is a demerit that the response at the time when the residents' perception of information declines is delayed.

  For this reason, it has been proposed to provide disaster information using community FM broadcasts established in various places in Japan in recent years. For example, in Patent Document 1, a predetermined DTMF signal is formed corresponding to the operation of a switch that is input when emergency broadcasting is performed, and is included in the FM broadcast signal, and is included in the FM broadcast at the FM broadcast receiver. When a predetermined DTMF (Dual-Tone Multi-Frequency) signal is detected, the power is automatically turned on to output a large volume. Further, in Patent Document 2, when at least one of a DTMF signal and an EWS signal indicating an emergency broadcast is included in an FM broadcast signal due to the occurrence of a disaster, the receiver is automatically turned on. The point that emergency broadcast messages are output at high volume is described.

Registered Utility Model No. 3118188 JP 2009-232247 A

  In the above-mentioned patent document, before broadcasting an emergency broadcast using FM broadcasting, a DTMF signal is flowed so that the FM broadcast receiver is automatically turned on and adjusted to be broadcast at a high volume. However, there is a problem that the contents of the emergency broadcast are only transmitted by voice through the broadcast, and may be missed, and cannot be directly transmitted to residents with hearing impairments.

  Accordingly, an object of the present invention is to provide an emergency broadcast radio receiver capable of reliably transmitting contents of an emergency broadcast through audiovisual using radio broadcast.

  An emergency broadcast radio receiver according to the present invention includes a reception unit that receives a radio broadcast signal, a display unit that displays information on the emergency broadcast, the received radio broadcast signal, and the emergency broadcast signal included in the radio broadcast signal. An emergency broadcast radio receiver including an output unit for outputting sound based on the detection unit for detecting a DTMF signal included in the radio broadcast signal received by the reception unit, and the detected DTMF signal continuously A determination unit that determines whether the combination is a plurality of combinations, a display processing unit that displays information corresponding to the combination when the DTMF signal is determined to be a predetermined combination, and a DTMF signal And an output processing unit that outputs audio from the output unit when it is determined that the combination is a predetermined combination. Further, the display processing unit stops displaying on the display unit when the determination unit determines that the DTMF signal is a specific combination. The display processing unit further includes a setting unit configured to set region information. The display processing unit displays the region information on the display unit based on the set region information, and combines DTMF signals related to the region information. Corresponding information is displayed.

  The present invention is configured to detect the DTMF signal included in the radio broadcast signal and to display information related to the emergency broadcast corresponding to a predetermined combination of a plurality of continuous DTMF signals. Therefore, even when the emergency broadcast is missed, the contents of the emergency broadcast can be visually recognized by the information displayed on the display unit, and the disaster information can be transmitted quickly and reliably. In addition, since residents with hearing impairments can check the contents of emergency broadcasts, it is possible to respond without delay even when evacuation is necessary.

It is an external appearance perspective view regarding embodiment which concerns on this invention. It is a block block diagram regarding the control processing of the radio receiver for emergency broadcasts. It is a table | surface which shows the correspondence of the combination of a DTMF signal, and a display character. It is a table | surface which shows the combination of the frequency regarding a DTMF signal. It is explanatory drawing regarding the display state which shows the content of emergency broadcast. It is a processing flow at the time of emergency broadcasting. It is a table | surface which shows the correspondence of the combination of a DTMF signal, and LED display.

  Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings. FIG. 1 is an external perspective view of an embodiment according to the present invention. A portable emergency broadcast radio receiver 1 includes a speaker 2 that outputs sound on the front surface, a display of settings such as time and frequency, a liquid crystal display panel 3 that displays the content of emergency broadcasts, and a plurality of different colors. An LED display 4 that includes an LED element and displays the content of emergency broadcast in the color of light, and a siren 5 that notifies that there is an emergency broadcast are provided. The emergency broadcast radio receiver 1 is provided with an AM broadcast or FM broadcast dial tuning knob 6 and a volume adjusting knob 7 on the side, and an LED light 8 for illumination and a handwheel on the side. A manual generator 9 with a handle is provided.

  Although not shown in the figure, an outlet for connecting to a commercial power source, a power cord, and a plug for charging a mobile phone are accommodated on the back of the emergency broadcast radio receiver 1. Moreover, the emergency broadcast radio receiver 1 has a built-in storage battery, and the storage battery is charged when a commercial power source is connected or when the generator 9 generates power.

  Since the emergency broadcast radio receiver 1 has such a configuration, the dial selection knob 6 and the volume adjustment knob 7 are operated as a normal radio receiver when used in a house. In the event of a disaster, emergency broadcasts can be received and their contents transmitted reliably, and when evacuated, they can be taken out and listen to emergency broadcasts at the evacuation center. In the case of power outage or outdoor use, it can be used continuously while charging the storage battery with a power generator, and can also be used for charging a mobile phone.

  FIG. 2 is a block configuration diagram relating to control processing of the emergency broadcast radio receiver 1. The control unit 10 performs overall control processing related to emergency broadcasting, determines a combination of the detected DTMF signals, and determines the combination of the liquid crystal display panel 3 and the LED display 4 based on the determined combination of DTMF signals. A display processing unit 102 that performs display control and an output processing unit 103 that controls audio output of the speaker 2 and output of the siren 5 based on detection of the DTMF signal are provided.

  The storage unit 11 stores a table of character information corresponding to combinations of four DTMF signals. In this example, as shown in FIG. 3, the area name displayed on the first line of the liquid crystal display panel 3, the disaster information displayed on the second line, and the LED display corresponding to the combination of the four detected DTMF signals. The display elements L1 to L4 of the device 4 are stored. The area name to be displayed is determined according to the data set by the setting unit 15.

  The detection unit 12 detects a DTMF signal included in a reception signal from the reception unit 13 that receives a radio broadcast signal. When four DTMF signals are detected in succession, the combination data is transmitted to the control unit 10. As shown in FIG. 4, the DTMF signal is defined by two combinations according to the recommendation of CCITT (International Telegraph and Telephone Consultative Committee), and is composed of four frequencies in the voice band corresponding to the push button of the telephone. Two frequencies respectively selected from the high group and the low group are combined to form one DTMF signal. By combining a plurality of such DTMF signals, a large number of individually identifiable signals can be created.

  The receiving unit 13 can be set to any one of an AM mode for receiving an AM broadcast, an FM mode for receiving an FM broadcast, or an OFF mode set to a specific frequency for broadcasting an emergency broadcast. When the emergency broadcast radio receiver 1 is turned on, the dial tuning knob 6 receives a normal radio broadcast signal selected in the AM mode or FM mode. However, the emergency broadcast radio receiver 1 is turned off when the power is turned off. It is set to receive a radio broadcast signal of a specific frequency in the mode. Here, the radio broadcast signal of a specific frequency may be either AM broadcast or FM broadcast.

  The connection circuit 14 is provided between the receiving unit 13 and the speaker 2, and outputs or stops outputting the radio broadcast signal received by the receiving unit 13 based on a control signal from the output processing unit 103.

  The setting unit 15 sets a region where the emergency broadcast radio receiver 1 is used. For example, it may be set using an element that can manually set a plurality of setting data such as a dip switch. In this example, as shown in FIG. 3, the setting data S1 is set when used in the region A, the setting data S2 is set when used in the region B, and the setting data is set when used in the region B. Set to data S3.

  The determination unit 101 determines whether or not a predetermined combination of DTMF signals corresponding to the setting data set by the setting unit 15. If the predetermined combination of DTMF signals corresponds to the setting data, the display processing unit 102 In addition, the output processing unit 103 performs control based on the combination data.

  For example, as shown in FIG. 3, when the setting data of the setting unit 15 is S1, when it is determined that the combination of DTMF signals transmitted from the detection unit 12 corresponds to one of 1015, 1016, 1017, or 1018 The display process of the liquid crystal display panel 3 is performed. For example, when the combination of the DTMF signals is 1015, as shown in FIG. 5, “Chiiki A” and “Ooame” are displayed on the liquid crystal display panel 3, and the display element L1 of the LED display 4 is turned on. Control display. The display elements L <b> 1 to L <b> 4 have LEDs that emit colors such as blue, yellow, green, and white, and different colors are lit corresponding to the disaster information displayed on the liquid crystal display panel 3.

  When the output processing unit 103 determines that the combination of the DTMF signals is a combination corresponding to the setting data of the setting unit 15, the output processing unit 103 sets the connection circuit 14 in the connected state and the receiving unit 13 is in the AM mode or the FM mode. Is switched to receive a broadcast at a specific frequency for broadcasting an emergency broadcast, and the emergency broadcast is automatically output from the speaker 2. Further, control is performed so that the siren 5 is turned on and siren sound is output.

  Also, as shown in FIG. 3, when it is determined that the combination of the received DTMF signals is a specific combination such as 0000, the display processing unit 102 stops displaying the disaster information and the output processing unit 103 5 is stopped, and sound is output by normal radio broadcasting.

  When the emergency broadcast radio receiver described above is used, first, when the emergency broadcast is notified by the disaster prevention administrative radio in the administrative agency, voice information, regional information and disaster information related to the emergency broadcast are transmitted via the dedicated line. Sent to a broadcast station. When receiving information related to emergency broadcasting, the radio broadcasting station creates a combination of the above-described plurality of DTMF signals based on regional information and disaster information related to emergency broadcasting. Then, using the created DTMF signal as an emergency broadcast start signal, and using a DTMF signal composed of a specific combination (for example, 0000) as an emergency broadcast stop signal, the emergency broadcast audio is transmitted between the emergency broadcast start signal and the emergency broadcast stop signal. A series of emergency broadcast signals into which information has been inserted is created and incorporated into a radio broadcast signal of either normal AM broadcast or FM broadcast by interruption processing and broadcast.

  Before using the emergency broadcast radio receiver, the setting unit 15 is manually operated to set the setting data of the use area. FIG. 6 is a processing flow during emergency broadcasting. First, it is checked whether a DTMF signal serving as an emergency broadcast start signal has been transmitted (S100), and a plurality of DTMF signals detected when transmission of a plurality of DTMF signals is detected match the combination registered in the storage unit 11. It is checked whether or not to perform (S101).

  If the registered combination is a predetermined combination, setting data relating to a preset use area is read (S102), and it is checked whether the combination corresponds to the setting data (S103). If the combination does not correspond to the setting data, it is an emergency broadcast related to an area different from the use area, and therefore, the process returns to step S100 without performing the subsequent emergency broadcast processing.

  If the combination corresponds to the setting data, character display processing and LED display processing corresponding to the combination are performed (S104). In the character display process, the area name corresponding to the setting data and the disaster information corresponding to the emergency broadcast are read and displayed on the liquid crystal display panel 3. In the LED display process, a display element corresponding to the detected combination is turned on.

  At the same time, the output process of the siren 5 is performed to generate a siren sound (S105). Then, it is checked whether or not the power of the radio receiver is turned on (S106). If the power is on, the channel selection process is performed so as to automatically switch to the broadcast of the specific frequency through which the emergency broadcast flows ( S107). When the power is off, the channel is pre-selected for the specific frequency broadcast in which the emergency broadcast flows in the OFF mode, so by performing the sound output process of the speaker (S108), the emergency broadcast is surely output as a sound. Can do. At that time, since the character display on the liquid crystal display panel 3 and the lighting process of the LED display 4 are performed, the contents of the emergency broadcast can be transmitted visually and auditorily. In addition, it is possible to notify the residents who are away by issuing a siren sound that there is an emergency broadcast, and to reliably transmit the contents.

  Next, it is checked whether a DTMF signal serving as an emergency broadcast stop signal has been transmitted (S109), and a plurality of DTMF signals detected when transmission of a plurality of DTMF signals is detected are stopped signals registered in the storage unit 11 It is checked whether or not it matches a specific combination indicating (S110). In this example, when a DTMF signal having a combination of 0000 is detected, the character display on the liquid crystal display panel 3 is not displayed, and the display element on which the LED display 4 is lit is turned off (S111). Moreover, the output process of the siren 5 is stopped and the siren sound is stopped (S112). In this case, the character display process and the LED display process may remain displayed. Further, a stop button for manually stopping the siren sound may be provided.

  It should be noted that the audio output process of the speaker is continued as it is to alert the user to prepare for the next emergency broadcast.

  After the emergency broadcast processing is completed, the process returns to step S100 to check whether the next emergency broadcast start signal has been transmitted.

  In the example described above, the LED display 4 using the liquid crystal display panel 3 and a plurality of display elements is used. However, display processing is performed using two LED displays capable of emitting a plurality of colors. It may be. For example, as shown in FIG. 7, one of the two LED indicators is used for identifying regional information, and the other is used for identifying disaster information, so that the contents of emergency broadcasts can be visually accurately identified. Can be communicated to. In this example, display control is performed on one LED display so that red light is emitted in the region A, green light is emitted in the region B, and blue light is emitted in the region C. The other LED display is controlled to emit light in blue in heavy rain, yellow in strong wind, green in earthquake, and white in other disasters.

  Such disaster information and regional information can be set in detail by combining DTMF signals, and may be set as necessary according to disaster prevention measures for each region.

1 Radio receiver for emergency broadcast 2 Speaker 3 Liquid crystal display panel 4 LED display 5 Siren
10 Control unit

Claims (3)

  A reception unit that receives a radio broadcast signal, a display unit that displays disaster information related to emergency broadcast, and an output unit that outputs audio based on the received radio broadcast signal and the emergency broadcast signal included in the radio broadcast signal An emergency broadcast radio receiver for detecting a plurality of continuous DTMF signals included in a radio broadcast signal received by the receiver, and displaying a predetermined combination of the plurality of DTMF signals A storage unit for storing disaster information, a determination unit for determining whether or not a plurality of detected DTMF signals are a predetermined combination, and a case where it is determined that the DTMF signal is a predetermined combination, corresponds to the combination A display processing unit for displaying disaster information on the display unit, and an output process for outputting audio from the output unit when it is determined that the DTMF signal is a predetermined combination Emergency broadcast radio receiver, characterized in that it comprises and.   The emergency broadcast radio receiver according to claim 1, wherein the display processing unit stops display on the display unit when the determination unit determines that the DTMF signal is a specific combination.   A setting unit configured to set area information; and the display processing unit displays the area information on the display unit based on the set area information and supports a combination of DTMF signals related to the area information. The radio receiver according to claim 1, wherein information is displayed.

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