CN202602643U - Wireless frequency modulation (FM) control system - Google Patents
Wireless frequency modulation (FM) control system Download PDFInfo
- Publication number
- CN202602643U CN202602643U CN 201220197626 CN201220197626U CN202602643U CN 202602643 U CN202602643 U CN 202602643U CN 201220197626 CN201220197626 CN 201220197626 CN 201220197626 U CN201220197626 U CN 201220197626U CN 202602643 U CN202602643 U CN 202602643U
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- microprocessor
- control system
- frequency modulation
- wireless frequency
- module
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Abstract
The utility model discloses a wireless frequency modulation (FM) control system. The wireless FM control system comprises a transmitting terminal and at least one receiving terminal, wherein the transmitting terminal comprises a microprocessor a and a power module a; the microprocessor a is connected with an audio amplifier; the microprocessor a is further connected with a DTMF (Dual Tone Multi Frequency) coding module, an electronic switch, a digital display unit a and a network interface respectively; the DTMF coding module, the electronic switch and the audio amplifier are sequentially connected with one another; the receiving terminal comprises a microprocessor b and a power module b; the microprocessor b is connected with an FM receiving unit, a volume control module, a power amplifier and a digital display unit b respectively; the FM receiving unit, the volume control module, the power amplifier and an output terminal are sequentially connected with one another; and the volume control module comprises a DTMF decoding module. According to the wireless FM control system disclosed by the utility model, the electronic switch is controlled through the DTMF coding module, and then, the on and off of a wireless FM broadcast reception speaker can be controlled accurately and reliably, so that the normal operation of a broadcasting network is guaranteed.
Description
Technical field
The utility model belongs to wireless frequency modulation broadcasting relevant device technical field, is specifically related to a kind of wireless frequency modulation control system that realizes the open-air wireless frequency modulation radio receiver of Remote.
Background technology
In the wireless frequency modulation broadcasting relevant device, wherein placing open-air wireless frequency modulation audio amplifier is main apparatus for receiving broadcasting, and audio driven power directly is connected with the loudspeaker of uphanging generally at 50 ~ 100W, to realize " point is logical " or " the village village is logical " broadcasting.This equipment generally depends on the power taking on the spot of electric power bar line, open-air aerial suspension, and nobody holds equipment and keeps.Wireless frequency modulation broadcasting is broadcasting at times generally; Behind the normal off-the-air; The radio frequency modulatng transmitter of central machine room can be shut down and waited to broadcast, and the wireless frequency modulation audio amplifier is if can not accomplish automatic shutdown at this moment, and consequence can be very serious: equipment will be exported very big noise and drive loudspeaker; Form noise jamming, have a strong impact on peripheral resident's life.The product that wireless frequency modulation audio amplifier in the market has an automatic shutdown function seldom also only limits to the detected carrier signal strength signal intensity and accomplishes automatic switching even dispose such function.There is a more serious problem in this: signal strength signal intensity is strong and do not have the receiving position of interference can realize reliable switching on and shutting down, and the position a little less than the signal strength signal intensity is just uncertain, if there is interference signal in periphery, just more can not realize automatic switching accurately and reliably.And also there is the influence of natural climates such as cloud and mist, thunderstorm in transmission of wireless signals.This passive type wireless frequency modulation audio amplifier receives many factor affecting must cause equipment: do not open during this start, can't realize broadcasting; Closed not during this shutdown, produced the noise jamming of being sick of, and this kind equipment application is limited, later maintenance cost is high.
The utility model content
The purpose of the utility model is the deficiency to above-mentioned prior art, and a kind of wireless frequency modulation control system simple in structure is provided, and can control the switch that FM broadcasting receives audio amplifier accurately and reliably, guarantees the normal operation in FM broadcasting network ground.
For achieving the above object, the technical scheme that the utility model is taked is: a kind of wireless frequency modulation control system is provided, comprises transmitting terminal and at least one receiving terminal; It is characterized in that:
Said transmitting terminal comprises microprocessor a, power pack a; Said microprocessor a is connected with audio frequency amplifier; Said microprocessor a also is connected with DTMF (Dual Tone Multi Frequency) coding module, electronic switch, digital display unit a, network interface respectively; Said dtmf code module, electronic switch, audio frequency amplifier connect successively;
Said receiving terminal comprises microprocessor b, power pack b; Said microprocessor b is connected with FM reception unit, volume control module, power amplifier, digital display unit b respectively; Said FM reception unit, volume control module, power amplifier, lead-out terminal connect successively; Said volume control module comprises the DTMF decoder module.
Said microprocessor a is connected with the RTC clock.Said microprocessor a is connected with keyboard a.Said network interface is connected with computer through Ethernet.Said network interface is the RJ45 interface.Said audio frequency amplifier is connected with radio frequency modulatng transmitter.
Said microprocessor b also is connected with keyboard b, open state indicating member.Said FM reception unit is connected with telescopic antenna.Said lead-out terminal is connected with loudspeaker.
The wireless frequency modulation control system that the utility model provides through dtmf code module controls electronic switch, and then realizes controlling accurately and reliably the Push And Release of wireless frequency modulation broadcast reception audio amplifier guaranteeing that radio network normally moves.
Description of drawings
Fig. 1 is the theory diagram of wireless frequency modulation control system transmitting terminal;
Fig. 2 is the theory diagram of wireless frequency modulation control system receiving terminal.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is carried out detailed description.
The wireless frequency modulation control system that the utility model provides comprises transmitting terminal and at least one receiving terminal.
As shown in Figure 1, transmitting terminal comprises microprocessor a, power pack a; Microprocessor a is connected with audio frequency amplifier; Microprocessor a also is connected with dtmf code module, electronic switch, digital display unit a, network interface respectively; Dtmf code module, electronic switch, audio frequency amplifier connect successively.Microprocessor a is connected with the RTC clock, to realize the timing switch function.Microprocessor a is connected with keyboard a, to realize local programming control.Network interface is connected with computer through Ethernet, to realize Long-distance Control.Network interface is the RJ45 interface.Audio frequency amplifier is connected with radio frequency modulatng transmitter.The wireless frequency modulation control system receives broadcast voice signal through electronic switch.
As shown in Figure 2, receiving terminal comprises microprocessor b, power pack b; Microprocessor b is connected with FM reception unit, volume control module, power amplifier, digital display unit b respectively; FM reception unit, volume control module, power amplifier, lead-out terminal connect successively; Volume control module comprises the DTMF decoder module.Microprocessor b also is connected with keyboard b, open state indicating member.The FM reception unit is connected with telescopic antenna.Lead-out terminal is connected with loudspeaker.
Power pack a is power supplies such as microprocessor a, audio frequency amplifier.Power pack b is power supplies such as microprocessor b, power amplifier, FM reception unit.
Digital display unit a can show real-time time, coded data.In the time of through keyboard a dtmf code, timed power on/off time, clock school can being set, function such as IP address.
Digital display unit b can display radio FM reception audio amplifier receive frequency, receive frequency range (or standard), geocoding, plane No., on-off state.
Receive frequency, receiving system, this machine geocoding, this locality/remote control function of frequency modulation audio amplifier can be set through keyboard b.
Through computer, the dtmf code module that operating personnel can the Long-distance Control transmitting terminal, thus realize FM broadcasting audio amplifier Push And Release and telemanagement; Operating personnel also can be through the computer installation timing shutdown time, and need not the personnel guard.
This wireless frequency modulation control system is through the dtmf code module controls electronic switch of transmitting terminal; Thereby the operating state of control receiving terminal power amplifier; Realize the Push And Release of the audio amplifier of wireless frequency modulation broadcast reception accurately and reliably; Its operation principle is as follows: at first, the transmitting terminal of wireless frequency modulation control system was opened the radio frequency modulatng transmitter preheating 2 ~ 5 minutes, and microprocessor a control dtmf code module is sent starting-up signal; Switch after audio frequency amplifier is sent by the radio frequency modulatng transmitter modulation again through electronic switch; After receiving terminal receives starting-up signal; Carry out code element information relatively by the geocoding that the DTMF decoder module is accomplished decoding, deciphers and will be decoded, decoding information is sent into microprocessor b and this machine; Judgement is start or off signal (opening or close power amplifier), and carries out corresponding start or shutdown function.After the dtmf code module was sent the completion of dtmf code signal, time-delay 100ms, electronic switch automatically switched in the broadcast voice signal input, carried out wireless frequency modulation broadcasting in real time.When off-the-air, the shutdown requirement that the transmitting terminal of wireless frequency modulation control system is set according to artificial requirement, timing setting or computer program, dtmf code module transmission off signal makes all interior receiving terminals completion power-off operation of wireless network coverage.
A transmitting terminal of this wireless frequency modulation control system can corresponding a plurality of receiving terminals; A plurality of receiving terminals can be distributed in a plurality of zones.During broadcasting, if need close receiving terminal operation, all can accomplish dtmf code, insertion, the transmission of control data automatically through computer installation to a receiving terminal operation or several zones, realize fixed point, divide section broadcasting.Real-time and effective guarantees wireless frequency modulation radio network device security, guarantees the fm broadcast signal highly-reliable transmission, improves FM broadcasting network running quality.Accomplish network control and management through network interface.In addition, this wireless frequency modulation control system can also guarantee, sends a telegram here after the power failure again, and system automatically performs shutdown programm, has both avoided noise jamming, has protected equipment again.
But the above only is the preferred implementation of the utility model; For those skilled in the art; Under the prerequisite that does not break away from the utility model principle; Be easy to the utility model is carried out some improvement and modification, these improvement and modification also fall in the protection range of the utility model claim.
Claims (9)
1. a wireless frequency modulation control system comprises transmitting terminal and at least one receiving terminal; It is characterized in that:
Said transmitting terminal comprises microprocessor a, power pack a; Said microprocessor a is connected with audio frequency amplifier; Said microprocessor a also is connected with dtmf code module, electronic switch, digital display unit a, network interface respectively; Said dtmf code module, electronic switch, audio frequency amplifier connect successively;
Said receiving terminal comprises microprocessor b, power pack b; Said microprocessor b is connected with FM reception unit, volume control module, power amplifier, digital display unit b respectively; Said FM reception unit, volume control module, power amplifier, lead-out terminal connect successively; Said volume control module comprises the DTMF decoder module.
2. wireless frequency modulation control system according to claim 1 is characterized in that: said microprocessor a is connected with the RTC clock.
3. wireless frequency modulation control system according to claim 1 is characterized in that: said microprocessor a is connected with keyboard a.
4. wireless frequency modulation control system according to claim 1 is characterized in that: said network interface is connected with computer through Ethernet.
5. wireless frequency modulation control system according to claim 1 is characterized in that: said network interface is the RJ45 interface.
6. wireless frequency modulation control system according to claim 1 is characterized in that: said audio frequency amplifier is connected with radio frequency modulatng transmitter.
7. wireless frequency modulation control system according to claim 1 is characterized in that: said microprocessor b also is connected with keyboard b, open state indicating member.
8. wireless frequency modulation control system according to claim 1 is characterized in that: said FM reception unit is connected with telescopic antenna.
9. wireless frequency modulation control system according to claim 1 is characterized in that: said lead-out terminal is connected with loudspeaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220197626 CN202602643U (en) | 2012-05-04 | 2012-05-04 | Wireless frequency modulation (FM) control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220197626 CN202602643U (en) | 2012-05-04 | 2012-05-04 | Wireless frequency modulation (FM) control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202602643U true CN202602643U (en) | 2012-12-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220197626 Expired - Fee Related CN202602643U (en) | 2012-05-04 | 2012-05-04 | Wireless frequency modulation (FM) control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202602643U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103177527A (en) * | 2012-12-29 | 2013-06-26 | 吕皓 | Warning device for preventing loss of old people and children by TDMF (dual-tone multi-frequency) signaling |
-
2012
- 2012-05-04 CN CN 201220197626 patent/CN202602643U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103177527A (en) * | 2012-12-29 | 2013-06-26 | 吕皓 | Warning device for preventing loss of old people and children by TDMF (dual-tone multi-frequency) signaling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Shantou high tech Zone in Guangdong city of Shantou province science and technology road 515000 No. 6 (business building) third, eleventh, twelfth Patentee after: Guangdong Donyan Network Technologies Co., Ltd. Address before: 515000 Guangdong city of Shantou province science and Technology Park Road No. 6 (business building) third, eleventh, twelfth Patentee before: Guangdong Dongyan Network Technologies Co., Ltd. |
|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20200504 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |