KR880000209Y1 - Receiving apparatus of alarm broadcasting - Google Patents
Receiving apparatus of alarm broadcasting Download PDFInfo
- Publication number
- KR880000209Y1 KR880000209Y1 KR2019850012347U KR850012347U KR880000209Y1 KR 880000209 Y1 KR880000209 Y1 KR 880000209Y1 KR 2019850012347 U KR2019850012347 U KR 2019850012347U KR 850012347 U KR850012347 U KR 850012347U KR 880000209 Y1 KR880000209 Y1 KR 880000209Y1
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- KR
- South Korea
- Prior art keywords
- alarm
- frequency amplifier
- intermediate frequency
- broadcast
- relay
- Prior art date
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H40/00—Arrangements specially adapted for receiving broadcast information
- H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
Abstract
내용 없음.No content.
Description
제1도는 본 고안의 회로도이다.1 is a circuit diagram of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1, 6 : 튜너부 2, 7 : 중간주파증폭기1, 6: Tuner part 2, 7: Intermediate frequency amplifier
3, 8 : 저주파증폭기 4 : 중간주파 발진회로3, 8: low frequency amplifier 4: medium frequency oscillation circuit
5 : 스피커 9 : 전원부5 speaker 9 power unit
RY : 릴레이 S1~S2: 릴레이스위치RY: Relay S 1 ~ S 2 : Relay switch
XT : 크리스탈 발진기XT: Crystal Oscillator
본 고안은 라디오 방송수신장치를 이용하여 일반 방송 주파수와는 다른 주파수로 경보를 발령할 때 이 경보방송신호가 수신되면 자동으로 경보방송 수신장치로 전환시키도록 된 경보방송 수신장치에 관한 것이다.The present invention relates to an alarm broadcast receiver configured to automatically switch to an alarm broadcast receiver when an alarm broadcast signal is received when an alarm is issued at a frequency different from a general broadcast frequency using a radio broadcast receiver.
수해나 지진으로 인한 긴급 재난시나 전시, 또는 전시를 대비한 훈련목적상 라디오방송을 이용하여 경보발령을 하게 되는데, 종래 방식은 경보발령처에서 경보를 발령하게 되면 그 경보신호를 중계국에서 받아서 중계국에서는 정해져 있는 전체AM, FM방송주파수로 방송을 하게되어 라디오방송 수신장치의 각 방송주파수를 통하여 청취하게 되는 것이었다. 따라서 중계국에서 비상경보발령을 전체방송주파수로 방송하기 위하여 여러가지 복잡한 조작이 필요하게 되고, 훈련경보를 수신하는 경우 소리를 작게하고 있게되면 경보방송이 수신되어도 이를 알아차리지 못하여 그 경보에 대처하지 못하게 되는 결점이 있었다.In case of emergency disaster or display due to flood or earthquake, or for training purpose, the alarm is issued using radio broadcasting. In the conventional method, when an alarm is issued at the alarm issuing station, the alarm is received from the relay station. All AM and FM broadcasting frequencies were decided, and the radio broadcasting receivers listened through each broadcasting frequency. Therefore, in order to broadcast emergency alarms at the entire broadcasting frequency in the relay station, various complicated operations are required, and when receiving a training alarm, if the sound is reduced, the alarm broadcast cannot be recognized even if an alarm broadcast is received, and thus the alarm cannot be coped with. There was a flaw.
본 고안은 위와같은 결점을 개선하기 위하여 고안된 것으로, 일정한 방송주파수로 경보신호가 수신되면 라디오방송 수신장치는 경보방송 수신체제로 자동절환되어 일정한 크기의 소리로 경보방송을 청취할 수 있도록 된 경보방송 수신장치를 제공하고자 함에 그 목적이 있다.The present invention is designed to improve the above-mentioned drawbacks, and when an alarm signal is received at a constant broadcast frequency, the radio broadcast receiver is automatically switched to an alarm broadcast receiving system so that the alarm broadcast can be heard with a certain size of sound. The purpose is to provide a receiver.
본 고안은 튜너부(1)와 중간주파증폭기(2), 저주파증폭기(3), 중간주파발진회로(4) 및 스피커(5)등으로 구성된 라디오방송 수신장치에 있어서, 안테나(ANT)에 수정발진기(XT)를 구비한 튜너부(6)를 연결하고, 상기 튜너부(6)의 출력단에는 중간주파증폭기(7)를, 중간주파증폭기(7)의 신호검출단(A)에는 트랜지스터(Q1)를 매개하여 릴레이(RY)를 연결하며, 상기 중간주파증폭기(7)의 출력 단에는 콘덴서(C1)와 가변저항 (VR1), 저주파증폭기(8)및 릴레이스위치(S1)를 통하여 스피커(5)를 연결시킨 구조로 되어 있다.The present invention is a radio broadcasting receiver comprising a tuner unit 1, an intermediate frequency amplifier 2, a low frequency amplifier 3, an intermediate frequency oscillator circuit 4, a speaker 5, and the like. A tuner part 6 having an oscillator XT is connected, and an intermediate frequency amplifier 7 is connected to an output terminal of the tuner part 6, and a transistor Q is connected to a signal detection terminal A of the intermediate frequency amplifier 7. 1 ) is connected to the relay (RY), and the output terminal of the intermediate frequency amplifier (7) is connected to the capacitor (C 1 ), variable resistor (VR 1 ), low frequency amplifier (8) and relay switch (S 1 ). The speaker 5 is connected through the structure.
미설명부호 9는 전원부, T는 트랜스포더, BAT는 충전용 밧데리, a,b는 릴레이스위치(S1)(S2)(S3)의 각 접점, LED는 스테레오표시용 발광다이오드이다.Reference numeral 9 is a power supply, T is a transponder, BAT is a charging battery, a and b are contact points of relay switches S 1 , S 2 , and S 3 , and LEDs are stereo display LEDs.
제1도는 위와같은 구조로 되어있는 본 고안의 회로도를 나타내는 것으로, 일반 방송을 수신할 때는 안테나(ANT)로부터 입력되는 방송신호가 튜너부(1)에서 동조되고 튜너부(1)의 출력신호가 중간주파증폭기(2)를 통하여 음성신호로 되어서 저주파증폭기(3)를 통하여 스피커(5)로 출력되게 된다. 여기서 중간주파발진회로(4)는 중간 주파증폭기(2)에 중간주파수를 공급하도록 구성되고, 가변저항(VR2)은 저주파증폭기 (3)의 음성출력을 조정하게 되도록 구성된다. 이때 수신된 방송신호는 경보 방송이 아니므로 경보 방송수신용 튜너부(6)의 출력신호는 존재 하지 않게 되고, 따라서 중간주파증폭기(7)의 신호검출단(A)에는 하이레벨의 신호가 출력되어 트랜지스터(Q1)를 턴오프시킨다. 트랜지스터(Q1)가 턴오프되면 릴레이(RY)는 동작을 하지않게 되어 릴레이스위치(S1)(S2)는 접점(a)에 각각 접속된다. 이와같이 되면 경보방송용 저주파증폭기(8)에는 전원이 인가되지 않고, 일반방송수신 장치에만 전원이 인가되어 일반 방송을 청취하게 되는 것이다.FIG. 1 shows a circuit diagram of the present invention having the above structure. When receiving a general broadcast, a broadcast signal input from the antenna ANT is tuned by the tuner unit 1 and an output signal of the tuner unit 1 is adjusted. It becomes an audio signal through the intermediate frequency amplifier 2 and is output to the speaker 5 through the low frequency amplifier 3. Here, the intermediate frequency oscillator circuit 4 is configured to supply an intermediate frequency to the intermediate frequency amplifier 2, and the variable resistor VR 2 is configured to adjust the audio output of the low frequency amplifier 3. At this time, since the received broadcast signal is not an alarm broadcast, the output signal of the tuner 6 for alert broadcast reception does not exist. Therefore, a high level signal is output to the signal detection terminal A of the intermediate frequency amplifier 7. To turn off transistor Q 1 . When the transistor Q 1 is turned off, the relay RY does not operate and the relay switches S 1 and S 2 are connected to the contacts a, respectively. In this case, power is not applied to the low frequency amplifier 8 for alarm broadcasting, and power is supplied only to the general broadcast receiving device to listen to the general broadcast.
만일 경보발령처에서 경보를 발령하게 될 경우에는 송신측에서는 미리 정해진 일정한 주파수로 경보방송을 하게되는데, 이 경보방송신호가 수신되면 크리스탈발진기 (XT)를 사용하는 튜너부(6)에서 이를 동조시켜 중간주파증폭기(7)로 송출하고, 중간주파증폭기(7)에서는 경보방송주파수를 검출하여 신호검출단(A)을 로우레벨로 출력시키게 한다. 이때 로우레벨의 신호가 트랜지스터(Q1)에 공급되어 트랜지스터(Q1)를 턴온 시키므로 릴레이(RY)가 동작되어 릴레이스위치(S1)(S2)를 접점(b)로 각각 전환시키게 된다. 그러면 일반방송수신장치로는 전원이 인가되지 않고 저주파증폭기(8)로 전원이 공급되어 중간 주파증폭기(7)의 출력신호는 저주파증폭기(8)에서 증폭된 다음 릴레이스위치(S1)의 접점(b)을 통하여 스피커(5)로 출력되어서 경보방송을 청취하게 되는 것이다.If the alarm is issued by the alarm originator, the transmitter broadcasts the alarm at a predetermined frequency. When this alarm broadcast signal is received, the tuner 6 using the crystal oscillator (XT) tunes it to the middle. The signal is output to the frequency amplifier 7, and the intermediate frequency amplifier 7 detects the alarm broadcast frequency so as to output the signal detection terminal A at a low level. At this time, a low level signal is supplied to the transistor (Q 1) is a relay (RY) operation because turning on the transistor (Q 1), thereby respectively switch the relay switch (S 1) (S 2) to the contact (b). Then, power is supplied to the low frequency amplifier 8 without power to the general broadcast receiver, and the output signal of the intermediate frequency amplifier 7 is amplified by the low frequency amplifier 8 and then the contact point of the relay switch S 1 ( b) is output to the speaker 5 to listen to the alarm broadcast.
이때 가변저항(VR1)을 적절히 조정해 놓으면 일반방송수신시 음성출력을 작게해 놓았더라도 경보방송시에는 가변저항(VR1)에 의한 만큼의 큰소리로 경보를 청취할수 있게되어 경보를 알아차리지 못하여 그에 미쳐 대처하지 못하는 일은 없을 것이다.At this time, if the variable resistance (VR 1 ) is properly adjusted, even if the voice output is reduced during general broadcast reception, the alarm can be heard as loudly as the variable resistor (VR 1 ) during alarm broadcasting, so the alarm is not noticed. There is nothing that cannot be coped with.
상기한 바와같이 본 고안은 일정한 주파수의 경보방송이 수신될때 라디오방송 수신장치는 경보방송 수신체제로 자동절환되어 미리 설정해 놓은 일정한 크기의 소리로 경보발령을 청취할 수 있게 되는 장점이 있다.As described above, the present invention has an advantage that the radio broadcast receiver is automatically switched to the alarm broadcast receiving system when the alarm broadcast of a certain frequency is received so that the alarm can be heard with a predetermined size of sound.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019850012347U KR880000209Y1 (en) | 1985-09-24 | 1985-09-24 | Receiving apparatus of alarm broadcasting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019850012347U KR880000209Y1 (en) | 1985-09-24 | 1985-09-24 | Receiving apparatus of alarm broadcasting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR870005955U KR870005955U (en) | 1987-04-25 |
| KR880000209Y1 true KR880000209Y1 (en) | 1988-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019850012347U KR880000209Y1 (en) | 1985-09-24 | 1985-09-24 | Receiving apparatus of alarm broadcasting |
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| Country | Link |
|---|---|
| KR (1) | KR880000209Y1 (en) |
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1985
- 1985-09-24 KR KR2019850012347U patent/KR880000209Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR870005955U (en) | 1987-04-25 |
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