CN2274391Y - Multi-media automatic timing and broadcasting device - Google Patents

Abstract

The utility model relates to a multi-media automatic timing and broadcasting device. After a timing bell and a music are recorded and treated by the technology of. a multi-media computer, timing is output and restored by a sound blaster. Timing and broadcasting can be completed by means of the adoption the front stage power amplification of multipath input and the back stage power amplification of power output. The utility model has the advantages of one machine with multifunction, good sound quality, and easy modification. A special I/O interface card can lead the system to automatically start, run and stop, can automatically detect the generation of the phenomenon of dead computer, and can lead the system to automatically reset. The utility model can be used in public places, such as stations, wharfs, airports, plazas, enterprises, communities, schools, etc.

Description

Multimedia automatically alarming and broadcaster

The utility model relates to a kind of giving the correct time and broadcaster.

At present, the used striking mechanisms in public place such as station, harbour, airport and organ mainly contain mechanical type and two kinds of the electronic types of giving the correct time with speech chip.The former adopts huge mechanical sound-producing device and resonant tank to give the correct time, and structure is heavy and can only send simple signal; The latter is converted into digital signal with voice signal to store into speech chip in advance, regularly is reduced to the analog signal sounding to give the correct time, and because of being subjected to the restriction of chip capacity and systemic-function, signal is simple, malleable not, lower tone.And these two kinds of devices all do not have broadcasting and wait other extension functions except that single time reporting function, and striking mechanism and broadcaster need investment respectively.Therefore, no matter be that existing striking mechanism all can not be satisfactory from function or from economically.

The purpose of this utility model is a kind of energy automatically alarming will be provided and have the tonequality grace of broadcast capability concurrently and be easy to change the novel of signal to give the correct time and broadcaster.

For achieving the above object, the utility model application of multimedia computer technology, with watch bells, the music of recording, after the COMPUTER CALCULATION editing and processing, regularly export sound-reducing by sound blaster, send back level power amplifier after modulating by the prime power amplifier, promote loudspeaker, thereby can play high-quality watch bells and music as required and be easy to change with power output.The prime power amplifier has the multi-channel input mouth, can insert recorder, CD player playing back music or by the microphone broadcast, also can receive the wireless microphone signal by the wireless microphone pecker and carry out square rally broadcast and large-scale activity floor manager.Power supply adopts Sequenced Power Supplys, delays time successively during start and connects each parts power supply, to reduce the impact to general supply.I/O interface card main circuit can receive " during startups/school " signal that is come by the turret clock controller and computer power supply is connected, and system start-up is moved or when carrying out the school when working in system.Systems soft ware also can be by the I/O interface card with computer self power-off." start/shutdown " control signal circuit of I/O interface card is used for making systems soft ware to pass through the I/O interface card and connects and the shutdown sequence power supply." house dog " circuit of I/O interface card is used for being automatically reset when " deadlock " takes place in system.

By above-mentioned the technical solution of the utility model as can be known, compare with existing striking mechanism, owing to adopted Multimedia Computer Technology and promoted loudspeaker with the back level power amplifier that power is exported, when the utility model can be realized whole day self-timing start, school, play watch bells, play prelude and finish melody and need not people's intervention fully, can obtain high-fidelity watch bells and melody, and be easy to revise.Owing to adopt the prime power amplifier of multichannel input and be furnished with the wireless microphone pecker, the utility model can be broadcast a tractor serves several purposes with microphone or wireless microphone.The utility model has been save huge mechanical structure, has reduced cost.As seen, the utility model is a kind of multipurpose, intellectuality, digitlization, a tractor serves several purposes, good and cheap, energy-conservation automatically alarming and public address system.

Below in conjunction with an embodiment, further illustrate concrete structure of the present utility model and feature.

Fig. 1 is the block diagram of system of the utility model embodiment;

Fig. 2 is the main circuit diagram of the I/O interface card of embodiment;

Fig. 3 is " start/shutdown " control circuit figure of the I/O interface card of embodiment;

Fig. 4 is I/O interface card " house dog " circuit diagram of embodiment.

Embodiment is the multimedia automatically alarming and the public address system in certain railway station, big city.It is by the computer (2) of band monitor speaker (1), sound blaster and I/O interface card, Sequenced Power Supplys (3), prime power amplifier (4), back level power amplifier A (5), back level power amplifier B (6), set of speakers A (7) and set of speakers B (8) composition.This device full-time employment process is: 5:55 timing every morning is sent " during startup/school " signal here by turret clock controller (9) and by the I/O interface card computer power supply is connected, the automatic graftabl of systems soft ware brings into operation after one minute, read clock pattern on the display.Systems soft ware sends " start " signal by the I/O interface card to Sequenced Power Supplys (3) after 2 minutes, and Sequenced Power Supplys is according to prime power amplifier (4) → back level power amplifier A (5) → back grade power amplifier B (6) pagination energized one by one.6:00 read hard disc data in preceding tens seconds and send sound blaster to broadcast " Dongfanghong ", broadcast watch bells 6 times.Melody and watch bells that sound blaster is broadcast are through pre-output, level power amplifier A (5) and the back level power amplifier B (6) after left and right two sound channels are sent respectively of amplifying of prime power amplifier (4).Back level power amplifier A and back level power amplifier B all adopt the bridge joint mode, the impedance of bridge joint back loading is that 8 Ω link to each other with set of speakers B (8) with set of speakers A (7), set of speakers A (7) and set of speakers B (8) are made of each through connection in series-parallel 40 Horn loudspeakers, every group of exportable power of loud speaker reaches the voice signal of 1000W.The 6:02 systems soft ware sends " shutdown " signal by the I/O interface card to Sequenced Power Supplys, and the backward that Sequenced Power Supplys is pressed power-up sequence is powered-down one by one.6:55 sends into the I/O interface card by " during startup/school " signal that the turret clock controller comes, detect immediately the computer system clock correction to 6:55 by systems soft ware, and send " start " signal to Sequenced Power Supplys by the I/O interface card, repeat aforementioned process, but only the streaming watch bells is 7 times, does not broadcast melody.Meet system plays watch bells on schedule later on, noon 12:00 and afternoon 6:00 add respectively and broadcast melody " Five-Starred Red Flag (the national flag of the People's Republic of China) " and " having a good trip ".Evening, 10:00 closed power amplifier at 10:02 after finishing watch bells, and the 10:05 systems soft ware passes through the I/O interface card with computer self power-off.The above-mentioned working procedure and the melody of broadcast etc. all can be made amendment on request and be need not to change hardware.

The circuit of Computer I/O interface card and operation principle can be by Fig. 2, Fig. 3 and Fig. 4 explanations.

I/O interface card circuit is made up of main circuit, " start/shutdown " control circuit and " house dog " circuit.

Main circuit is by solid-state relay SSR, diode D ₁, diode D ₂, optocoupler GD, triode T ₁, voltage-stabiliser tube D ₃, monostable trigger IC ₁, resistance R ₁And R ₂, capacitor C ₃Form.Be in Fig. 3 frame of broken lines that computer power supply exchanges 22OV importation circuit, locate power line is disconnected indicating " X " that insert the output of solid-state relay SSR, solid-state relay SSR input is on one side by diode D ₁Connect the 12V power supply, by diode D ₂Connect turret clock controller (9), another edge joint optocoupler GD input and triode T ₁Emitter.The output collector electrode of optocoupler GD passes through resistance R ₁Connect+5V, and receive 11 pin of parallel port of computer 1 (LPT1), the grounded emitter of optocoupler GD, triode T ₁Base stage by voltage-stabiliser tube D ₃With monostable trigger IC ₁3 pin join.Monostable trigger IC ₁4.8 pin connect the 5V power supply, 7.6 pin pass through resistance R ₂Connect the 5V power supply and pass through capacitor C simultaneously again ₃Ground connection, 1 pin ground connection, 2 pin connect parallel port of computer 1 (LPT1) the 1st pin.During the not conducting of SSR input, computer does not have the alternating current 220V input, does not work.When the turret clock controller is sent " during startup/school " signal here, by diode D ₂, be added to input and the optocoupler GD input of SSR, make the conducting of SSR output, computer power supply obtains the alternating current 220V input, starts work immediately.Because " during startup/school " signal is longer effective time, computer power supply exportable stable+5V ,+power supplys such as 12V.+ 5V is added to monostable trigger IC ₁On, make its 3 pin output low level, by voltage-stabiliser tube D ₃Receive triode T ₁Base stage; + 12V is added to D ₁, SSR output, T ₁Between emitter and the collector electrode, make D ₁, SSR input, T ₁SSR output conducting has so just been kept in conducting, and computer power supply works on.

When computer will quit work, only need to IC ₁2 human hair combing wastes send a low level, make it trigger upset, the high level of 3 pin output certain width is by voltage-stabiliser tube D ₃Receive T ₁Base stage, T like this ₁Just end D ₁, the SSR input do not have electric current to pass through, the SSR output also turn-offs, computer power supply does not have the alternating current 220V input, computer quits work.

" during startup/school " is when signal is used for the school simultaneously, when the turret clock controller is sent " during startup/school " signal here, by diode D ₂Be added to SSR input and optocoupler GD input, make the conducting of GD input ,+5V passes through resistance R ₁Make its output conducting, export a low level, after systems soft ware detects this signal by inquiry, the corrective system clock.

" start/shutdown " control circuit is by relay J, diode D ₅, voltage-stabiliser tube D ₄With triode T ₃Form.One termination 12V power supply of relay J, another termination triode T ₃Emitter.Triode T ₃Base stage and voltage-stabiliser tube D ₄Join.When needs were opened switch, systems soft ware was by voltage-stabiliser tube D ₄To triode T ₃Base stage send a low level ,+12V adds to T by J ₃Emitter and collector, make its conducting, electric current is by relay J, normally closed contact K disconnects, Sequenced Power Supplys work is opened a prime power amplifier and a back level power amplifier in proper order.When needs were closed forward and backward grade of power amplifier, systems soft ware was by voltage-stabiliser tube D ₄To triode T ₃Base stage send a high level, T ₃End, do not have electric current to pass through among the J, normally closed contact K conducting, Sequenced Power Supplys quits work, prime power amplifier and back level power amplifier backward is closed.

Owing to computer continuous operation every day over a long time tens hours, the situation of " deadlock " may appear sometimes.Automatically reset by " house dog " circuit this moment." house dog " circuit is by multivibrator IC ₂, triode T ₂, light-emitting diode FG, resistance R ₃, R ₄, R ₅, R ₆, capacitor C ₄ Form multivibrator IC ₂4,8 pin connect+5V, 7 pin pass through resistance R ₃Connect+5V, pass through resistance R ₄Connect 2,6 pin again with triode T ₂Emitter and capacitor C ₄An end join triode T ₂Collector electrode and capacitor C ₄Other end ground connection, triode T ₂Base stage meets 14 pin of parallel port of computer 1 (LPT1), multivibrator IC ₂1 pin ground connection, 3 pin connecting resistance R ₅An end, R ₅Positive pole and the computer reset button RST of other end sending and receiving optical diode FG, the negative pole of light-emitting diode FG passes through resistance R ₆Ground connection.Resetting is to automatically reset, and need not human intervention.Multivibrator IC ₂Cycle of oscillation be tm1+tm2+=(R3+R4) * 1n2+R ₄* C4 * 1n2, wherein tm1 is the 3rd a pin output high level time, and tm2 was the 3rd pin output low level time, and tm1 and tm2 were respectively about about 5 minutes and 1 second, tm1＞＞tm2.Systems soft ware is regularly to T at ordinary times ₂Base stage send low level, make its conducting, C ₄The electric charge at two ends is bled off, IC ₂The 2nd pin be always low level, the 3rd pin is always high level, RESET is invalid, the computer operate as normal.When " deadlock ", systems soft ware also stops carrying out, can't be to T ₂Base stage send low level ,+5V passes through R ₃, R ₄To C ₄Charging, when its voltage greater than 2/3rds (+5V) time, IC ₂The 3rd pin output low level, RESET is effective, system reset.Because the 3rd pin output low level time is shorter, becomes high level after the system reset immediately, restart the computer, and the time of the 3rd pin output high level is longer, can guarantee that systems soft ware reloads.

Claims (1)

1. multimedia automatically alarming and broadcaster are by the computer (2) of band monitor speaker (1) and sound blaster, Sequenced Power Supplys (3), prime power amplifier (4), back level power amplifier A (5), back level power amplifier B (6), set of speakers A (7) and set of speakers B (8) form, and it is characterized in that:

1.1 said front-located power amplifier (4) has the multi-channel input mouth;

1.2 said back level power amplifier A (5) and back level power amplifier B (6) adopt power output to promote set of speakers A (7) and set of speakers B (8), set of speakers A (7) and loud speaker B (8) are made up of many Horn loudspeaker connection in series-parallel;

1.3 said computer (2) is furnished with the I/O interface card of being made up of main circuit, " start/shutdown " control circuit and " house dog " circuit;

1.3.1 said main circuit is by solid-state relay SSR, diode D ₁, diode D ₂, optocoupler GD, triode T ₁, voltage-stabiliser tube D ₃, monostable trigger IC ₁, resistance R ₁And R ₂, capacitor C ₃Form, computer 220V power supply is disconnected the output that inserts solid-state relay SSR, solid-state relay SSR input is on one side by diode D ₁Connect the 12V power supply, by diode D ₂Connect turret clock controller (9), another edge joint optocoupler GD input and triode T ₁Emitter, the output collector electrode of optocoupler GD passes through R ₁Connect+5V, and receive 11 pin of parallel port of computer 1 (LPT1), the grounded emitter of optocoupler GD, triode T ₁Base stage by voltage-stabiliser tube D ₃With monostable trigger IC ₁3 pin join monostable trigger IC ₁4,8 pin connect the 5V power supply, 7,6 pin pass through resistance R ₂Connect the 5V power supply, pass through capacitor C ₃Ground connection, 1 pin ground connection, 2 pin connect parallel port of computer 1 (LPT1) the 1st pin;

1.3.2 said " start/shutdown " control circuit is made up of relay J, diode D5, voltage-stabiliser tube D4 and triode T3, one termination 12V power supply of relay J, another termination triode T3 emitter, triode T3 base stage connects voltage-stabiliser tube D4 negative electrode, voltage-stabiliser tube D4 anode connects 17 pin of parallel port of computer 1 (LPT1), and normally closed some K two ends of relay J are received control switch two ends of Sequenced Power Supplys respectively;

1.3.3 said " house dog " circuit is by multivibrator IC2, triode T2, light-emitting diode FG, resistance R 3, R4, R5, R6, capacitor C 4 is formed, 4 of multivibrator IC2,8 pin connect+5V, 7 pin connect+5V by resistance R 3, connect 2 by resistance R 4,6 pin connect the emitter of triode T2 and an end of capacitor C 4 again, the other end ground connection of the collector electrode of triode T2 and capacitor C 4, triode T2 base stage connects 2 pin of parallel port of computer 1 (LPT1), the 1 pin ground connection of multivibrator IC2, the end of 3 pin connecting resistance R5, positive pole and the computer reset button RST of the other end sending and receiving optical diode FG of R5, the negative pole of light-emitting diode FG is by resistance R 6 ground connection.

Images