CN2293164Y - All remote-controlled multifunctional household image and sound equipment cabinet - Google Patents

Abstract

The utility model relates to a fully remote controlled multifunctional machine cabinet of household image and sound equipment, which is characterized in that a system for purifying a power supply and stabilizing voltage, a power supply centralized control system, an automatic ventilating system, a display system of sound intensity and an optical screen, a sound and video converting system and a general sound volume control system which are controlled by remote control function are arranged in a machine cabinet. Image and sound equipment is connected with a purified and voltage stabilized power supply through a corresponding switch which is arranged on a switch panel which is arranged in the power supply control system. After a general power supply is started, the purified and voltage stabilized power supply and the automatic ventilation system are automatically put into operation. After sound and video mode is selected through remote control, and the indoor optical screen of sound intensity display is started, the required power supply control switch for the image and sound equipment, which is arranged on the switch panel is remotely controlled or manually operated, and general sound volume is selected through remote control.

Description

Full remote controlled multi-functional household audio-visual devices rack

The utility model belongs to implements central controlled device to home audio-visual devices, it can use that audio-visual devices be listened to, use easily in the rating, performance process remote control mode to audio-visual devices implement to drop into excision, conversion, show, control and protection.

Present rack of the prior art, a kind of is case goods's cabinet, and a kind of is the steel wood furniture frame of metal tube, just all audio-visual equipment is deposited on the cupboard, all equipment is powered by a porous power source box, getting in touch by choose plug cut-out and power supply when equipment excises respectively; The stabilized power supply that does not have on the rack in the prior art to purify is powered, and power supply noise is serious when the high-fidelity playback; Rack of the prior art does not carry out the switching that the audio frequency and video mode is selected to the operational mode of equipment combination; More not with sound equipment synchronous, the optical screen display system and the automatic ventilation system of sound field intensity in the monitoring room; Do not have distant control function in the rack of prior art to total volume.Therefore rack of the prior art only is the furniture of common placement household electrical appliances, is absolutely unsafe.The also renewal of the home audio-visual devices of the incompatibility develop rapidly requirement of acquiring.

The purpose of this utility model provides a kind of by the multi-functional audio-visual devices rack under the remote control system control.It can implement centralized control to the power supply of audio-visual devices; Can switch selection to audio-video signal; Can show room sound field intensity; Can carry out the automatic ventilation heat radiation to equipment; The home audio-visual equipment common control equipment that can carry out remote control and have unique look volume.

The purpose of this utility model is achieved in that the utility model is divided into eight parts.First is the home audio-visual devices rack, is used to place audio-visual devices and by adorning all systems of the present utility model; Second portion is a remote control system; Third part is the power purification voltage-stabilizing system; The 4th part is a power control system, whole power-supply systems of control audio-visual devices rack; The 5th part is an intensity of sound in indoor sound intensity display light screen system, the display room; The 6th part is the audio frequency and video switched system; The 7th part is a sound-volume control system; The 8th part is the automatic ventilation system, the serviceability temperature in the protection home audio-visual devices.The power supply of above each several part is implemented remote control by remote control system.

The home audio-visual devices rack belongs to electronic equipment control cubicle category.Adopt modern integrated circuits to implement control technology, the centralized control of audio-visual devices power supply is carried out with remote control mode, implement power purification simultaneously and protection and monitoring are implemented in the use of audio-visual devices.

Now the utility model each several part principle is described below:

First is the home audio-visual devices rack.Full remote controlled multi-functional household audio-visual devices rack of the present utility model adopts wooden horizontal mode.The switch panel of transversely arranged power control system is housed above the positive central authorities of home audio-visual devices rack.11 switches are housed on the panel in the present embodiment, and the switch top indicates the title of Be Controlled object, and the top of each switch also is provided with corresponding indicator light.Operate its switch and can implement the manual input and the excision of corresponding audio-visual devices power supply.Place " standby " position can realize corresponding remote control input and switching on switch when using remote control.The power socket board corresponding with switch is installed in the back side central authorities top of home audio-visual devices rack, and the top of socket all has and supply socket fuse one to one.Remote control system infrared receiving window mouth and total volume potentiometer also are housed on the mains switch panel of home audio-visual devices cabinet front.The audio frequency and video switched system adopts relay that the switching of contact point mode is arranged, and big Dynamic Signal is transmitted the fidelity height.Can realize that No. 8 audio frequency apparatuses switch and the synchronous switching of No. 4 video equipments.The input of audio frequency and video switched system, output adopt the jack mode, and the top of each jack all indicates pairing function.Female receptacle is installed in the back side of home audio-visual devices rack, the below of power socket board.The both sides of home audio-visual devices cabinet front is respectively by the demonstration optical screen of adorning a sound intensity display light screen system, and a knob of adjusting display sensitivity all is equipped with in the below of each optical screen.The instrument air fan of temperature control automatic ventilation system is installed in the back side of home audio-visual devices frame, and measuring point is installed in the home audio-visual devices rack.Each systems control division branch of the present utility model is installed in the sealing interlayer of home audio-visual devices rack switch panel, is provided with interlayer in the home audio-visual devices rack, can place home appliances such as CD player, video disc player, video tape recorder, power amplifier in the interlayer.Television set is placed on the central authorities top of home audio-visual devices rack.Main sound channel bookshelf audio amplifier can be placed on the top that the sound intensity shows optical screen, and equipment, attaching plug that the home audio-visual devices rack is placed insert in the supply socket that is installed in the home audio-visual devices rear of cabinet one to one by its title.

Second portion is a remote control system.Remote control system of the present utility model is to adopt special-purpose remote control integrated circuit to constitute.As total power switch K ₆₁₁Closed back remote control circuit is just devoted oneself to work.Have 18 tunnel remote control output ports, adopt the relay tip mode to implement control.Wherein the relay tip of 10 road output ports is connected across the two ends of 10 road power control switch contacts on the switch panel, is used for controlling the power supply of audio-visual devices.When the hand switch on the switch panel places " standby " position, be actually switch off state, this moment, the operating and remote controlling keyboard made corresponding relays adhesive or dispensing, made the relay tip closure that is connected across switch ends or disconnected start, the shutdown that just can operate equipment needed thereby easily; Have 1 the tunnel to be remote control general supply output port in 18 road output ports, the remote control of general supply is that realize in the double-pole loop that the two windings point with relay seals in total power switch; Use when manual as need, under the situation of home audio-visual devices rack total power switch of closing, the mains switch of equipment needed thereby on the home audio-visual devices cabinet front switchboard is placed " ON " position, just relevant device can come into operation.Remaining 7 road output ports, 1 road guide sound high light screen display system in the remote control system, 1 road keying output port control audio frequency and video switched system, 2 road keying output ports are controlled total volume electro kinetic potential device, and remaining 3 the tunnel stay that to do exploitation standby.IC in remote control system ₄₁And peripheral circuit constitutes encoding transmitting circuit, IC ₄₁Input be connected IC with the coding circuit of key-press matrix ₄₁Output through resistance R ₄₁With triode T ₄₁Join with the infrared transmitting tube positive pole, the negative pole of infrared transmitting tube is through resistance R ₄₂Ground connection.Button on the operating and remote controlling mobile phone inputs to IC with coding ₄₁, launch through transmitting tube then.IC ₄₂And peripheral circuit formation remote-control receiving circuit, the light signal that infrared receiving terminal will have coding characteristic converts the signal of telecommunication to, inputs to IC ₄₂Inlet, through IC ₄₂18 road output ports are delivered in decoding and processing, and the utility model has been made the pulse gate memory circuit with 13 road output ports wherein, make to press the just remote-controlled audio-visual devices start of singly-bound, two kinds of functions of shutdown.Control relay adhesive or break are removed in the output of 13 tunnel pulse gate memory circuits.Because this has 1 the tunnel to be the general supply control relay in 13 the tunnel, the contact of its relay is that the two-way normal opened contact seals in respectively in the total power switch double-pole loop, has the contact of No. 10 relays all to be connected in parallel on the two ends of each the power control switch contact on the switch panel in addition.Just have the corresponding relays adhesive so press certain button, make relay tip closure, started corresponding apparatus across switch ends when remote control mobile phone.Because the function of pulse gate memory circuit of the present utility model, only need press again when closing the equipment of institute's remote control when starting by that button get final product.Thereby widen IC ₄₂Distant control function.Remaining 2 tunnel, 1 tunnel excision and the input that is used for guide sound high light screen display circuit in 13 tunnel, in addition 1 the tunnel stay do standby.

Third part is the power purification voltage-stabilizing system.Purifying and pressure stabilizing power supply of the present utility model is made up of jamproof low pass filter and voltage regulator circuit.The purification of the jamproof low-pass filter circuit of power supply process is added in the input of voltage regulation loop in the power control system, the output a of voltage regulation loop, and " join with the switch panel bus L of power control system, b ' joins with switch panel bus N end.Voltage regulation loop is by IC ₅₁-IC ₅₄And peripheral circuit formation, wherein IC ₅₁Input to power supply plays time-delay, IC ₅₁Output follow relay J ₅₁Control loop, J ₅₁Adhesive when delaying, string is at the contact J of power conditioner output loop _C51Closure is sent to switch panel and each control system.IC ₅₂-IC ₅₄End of oppisite phase be provided with stable definite value, this definite value is set when the 220v alternating voltage, sample resistance R _W55The fluctuation end of a termination voltage, other end ground connection, center contact meets IC ₅₂-IC ₅₄In-phase end, when line voltage is on the low side, the sampling resistor R of voltage regulating circuit _W55The variable quantity of voltage is introduced voltage comparator ic ₅₂-IC ₅₄, IC ₅₂-IC ₅₄Make relay J according to definite value ₅₂-J ₅₄Optionally adhesive, the tap position of regulating autotransformer changes output voltage and reaches normal value, thereby guarantees the normal use of home audio-visual devices and the stable operation of each system.

The 4th part is a power control system.Output a with the purifying and pressure stabilizing power supply ", b ' is connected to the power supply buses L end and the N end of switch panel.Switch panel is equipped with 11 road power control switch, and wherein 1 the tunnel is total power switch, adopts the double-pole mode, and all the other 10 the tunnel are the power control switch of audio-visual devices.The contact of No. 10 relays in the remote control circuit is corresponding in parallel with 10 way switch contacts on the switch panel respectively, the L end of power supply buses is together received in the upper end of 10 way switch, the lower end connects No. 10 fuses respectively, the supply socket of the following termination correspondence of No. 10 fuses, another termination power supply buses N of supply socket.On the contact of supply socket and fuse separately, be connected to the light-emitting diode of band dropping resistor, the input or the disconnection of indication power supply.It is with general supply control relay J in the remote control circuit that the remote control of general supply realizes ₄₁₁Two groups of normal opened contacts seal in the control loop of double-pole of total power switch total power switch K ₆₁₁Closure just can be implemented remote control.After general supply drops into, can manually select or the required power supply in remote control selection each road of connection, indicator light is lighted simultaneously.Operation for convenience, be installed in the purifying and pressure stabilizing regulating circuit of the power control system in the home audio-visual devices rack, indoor sound intensity optical screen display system, audio frequency and video switched system, automatic ventilation system by the remote control direct control, irrelevant with the switching surface on-board switching.

The 5th part is indoor sound intensity display light screen system.When family's audio-visual devices came into operation, indoor intensity of sound display light screen system can drop into show state by remote control, room sound field intensity is monitored, thus control and understanding loudness.The sound intensity shows that optical screen is installed in the both sides of rack.Rack is wooden horizontal, and the switch panel that switch, remote control receive window and total volume potentiometer by power supply control constitute is housed above cabinet front central authorities.The switch panel both sides is an interlayer of placing audio-visual devices, is divided into left side interlayer and right side interlayer, and interlayer one side in left side shows optical screen near the left side sound intensity, and the right side interlayer one side sound intensity that keeps right shows optical screen; Circuit in the control system is installed in the rack.Every shows that optical screen all is vertically to arrange the dark polymethyl methacrylate panel of back outer cover by 10 row LED light-emitting diodes to form in the present embodiment.About being divided into two.Scheme of the present utility model adopts the sound wave controlled method to power amplifier and the non-loaded influence of video disc player, is electret pick-up head MIC by sound transducer _L(with the left side is example explanation) converts the variation of sound wave to the fluctuation signal input signal amplifier IC of voltage _7LInput, IC _7LOutput respectively with the voltage amplifier IC of each row ₇₁-IC ₇₁₀Input connect IC ₇₁-IC ₇₁₀The corresponding respectively integrated circuit that is connecting 10 row driving LED of output drive the in-phase input end of comparator, 27 amplifiers of every row drive 27 LED light-emitting diodes.27 outputs that drive comparator of every row are received each LED light-emitting diode positive pole through resistance respectively, each LED light-emitting diode minus earth.27 of wherein every row drive the end of oppisite phase of comparator and have set different threshold values through 28 resistance series connection dividing potential drops, so work as the electret pick-up head signal are imported IC _7LAfter amplifying output, be input to the voltage amplifier IC of each row ₇₁-IC ₇₁₀After promoting to amplify, send into 27 of every row and drive the in-phase end of comparators and threshold values that every row end of oppisite phase increases progressively successively and compare then incremental and light LED.When intensity of sound changed, the number of the LED light-emitting diode that each array is lighted also changed thereupon, saw through the dark polymethyl methacrylate screen formation sound intensity and showed optical screen.IC ₇₁-IC ₇₁₀Multiplication factor can set, thereby use entertaining by setting the shape that the number of lighting light-emitting diode under the same intensity of sound designs light beam on the optical screen, increasing.

The 6th part is the audio frequency and video switched system.The audio-video signal of the utility model home audio-visual devices adopts the remote control mode of relay tip to automatically switch.To improve signal transmission quality.J ₈₁-J ₈₈Serve as the switching of 8 tunnel audio signals, J ₈₉-J ₈₁₂Serve as the switching of 4 tunnel audio signals.Switching controls adopts the mode of digital circuit shift register, by IC ₈₂Finish 8 tunnel handover trigger.The circuit of audio frequency and video switched system is installed in the rack, is switched by remote control mode control.Can finish synchronous switching to switching of 8 tunnel audio signals and 4 tunnel vision signals.The audio-video signal line is corresponding during use inserts on the rear of cabinet audio frequency and video female receptacle in the corresponding jack.Rear of cabinet has 8 road audio input ends, 4 road video inputs; Audio frequency exported for 1 tunnel (dividing L, R sound channel), and video exports 1 the tunnel; Voice band line exports 1 the tunnel; Video line exports 1 the tunnel.The corresponding video input jack that inserts of the video output signals line of compact disc player, video disc player, video tape recorder, video camera wherein; Audio signal wire comprises that the output line of recorder, the audio output signal line of tv audio output line insert in the corresponding audio input jack, insert the video output plughole of the audio frequency and video female receptacle of rear of cabinet then with video masking holding wire one end of band plug, the other end inserts in the video input jack of television set; Shielded signal wire one end with other two band plugs inserts audio output L and R jack on the plate respectively again, the other end is corresponding inserts in power amplifier input L, the R jack.Thereby constitute the closed-circuit system of selecting the audio-video signal that switches by remote control.

The 7th part is a sound-volume control system.Total volume adjustment is to adopt the remote control electric potentiometer set mode, by the key control of pressing on the remote control mobile phone.Triode T ₉₁, T ₉₂And relay J ₉₁, J ₉₂Control the rotation of the both forward and reverse directions of total volume potentiometer respectively, potentiometer is that coaxial duplex can synchronously be controlled the two-way sound channel.After remote control mobile phone presses ﹠ hold the coding of the total volume of increase sent, IC ₄₂Respective coding output F end output high level makes T ₉₁Conducting J ₉₁Adhesive, this moment, motor just changeed total volume potentiometer R _W91Increase, volume is increased.Unclamp the stall of button motor and keep volume.When mobile phone press ﹠ hold send the coding that reduces total volume after, IC ₄₂Respective coding output D end output high level makes T ₉₂Conducting J ₉₂Adhesive, motor counter-rotating R _W91Reduce to make volume to reduce, unclamp the stall of button rear motor and keep volume.Total volume potentiometer R _W911 _aEnd, 2 _aEnd is connected on the L end and the R end of the audio frequency output of audio frequency and video commutation circuit, 1 respectively _bEnd, 2 _bEnd connects audio output port respectively, forms the output of L, R, 1 _cEnd and 2 _cThe end common ground changes L, R end resistance to earth, thereby changes amplitude output signal when motor rotates.Total volume knob is installed on the switch panel of cabinet front.

The 8th part is the automatic ventilation system.When home audio-visual devices came into operation, the automatic ventilation system had dropped into monitor state automatically, and two thermistors are placed on the left and right sides respectively and place in the rack interlayer of audio-visual devices.IC in the circuit ₁₀₁Serve as the monitoring comparator.A termination power positive pole after two thermistor parallel connections, the other end and R ₁₀₁Join and form dividing potential drop mode, dividing point and IC ₁₀₁In-phase end join IC ₁₀₁End of oppisite phase and R ₁₀₂And R ₁₀₃The dividing potential drop definite value point that forms joins.R after temperature rise _T1, R _T2Resistance descend, the in-phase end current potential raises, and makes J ₁₀₁Action J _C101The closed instrument air that starts is fanned the purpose that reaches ventilation and heat.The in-phase end current potential descends after temperature is normal, J ₁₀₁Dispensing, J _C101Disconnect the left alone without help commentaries on classics of fan.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1, schematic block circuit diagram of the present utility model are as the specification digest accompanying drawing

The outside drawing of Fig. 2, the utility model embodiment.Among Fig. 21, switch panel 2, sound intensity optical screen 3, rack interlayer 4, total volume knob 5, sound intensity optical screen sensitivity knob 6, rack

Fig. 3 is the dorsal view of Fig. 2.Among Fig. 31, fuse 2, supply socket 3,8 road audio frequency input 4,4 road videos input 5, audio frequency output 6, video output 7, general supply inlet wire 8, instrument fan

Fig. 4 is remote control system circuit theory diagrams in Fig. 1 schematic block circuit diagram.

Fig. 5 is purifying and pressure stabilizing power circuit principle figure in Fig. 1 schematic block circuit diagram.

Fig. 6 is switch panel circuit theory diagrams in Fig. 1 schematic block circuit diagram.

Fig. 7 is a sound intensity display system circuit theory diagrams in Fig. 1 schematic block circuit diagram.

Fig. 8 is Fig. 1 schematic block circuit diagram middle pitch video switching system circuit theory diagrams.

Fig. 9 is sound-volume control system circuit theory diagrams in Fig. 1 schematic block circuit diagram.

Figure 10 is an automatic ventilation circuit system schematic diagram in Fig. 1 schematic block circuit diagram.

Fig. 4 is remote control system circuit theory diagrams among Fig. 1.IC among the figure wherein ₄₁Model is BA5048, IC ₄₂Model is TC9150, IC ₄₃-IC ₄₁₅Model is 74LS74.E ₄₀Be remote control mobile phone battery supply, E _C41Be remote-control receiving circuit power supply, E _C42Be the memory switch power supply.Coding and radiating circuit are typical infrared emission circuit, by IC ₄₁And the peripheral cell formation, by IC ₄₁T ₁-T ₃Three ports and K ₁-K ₆6 ports intersect the button contact that the back forms 18 intersections, can form 18 kinds of codings, IC ₄₁2 pin and 3 pin be connected to crystal oscillator clock source, T be provided ₄₁Adopt the emitter follower mode, base stage is through resistance R ₄₁With IC ₄₁Output 15 pin connect, emitter connects the positive pole of infrared transmitting tube SE, the negative pole of infrared transmitting tube is through resistance R ₄₂Ground connection.IC ₄₁COME end and T ₁-T ₃The diode D that end joins ₄₁-D ₄₃Corresponding to the user code pattern of receiver with anti-tampering other remote control equipment.Press button and just can launch the infrared signal of different pulse code modulation by infrared diode SE.

Infrared receiving circuit is by infrared receiving terminal decoding circuit IC ₄₂And peripheral circuit and power supply 3 parts composition.YH40H is the infrared light receiving amplification circuit of one sealing, is installed on the switch panel of rack central authorities.After amplifying, the infrared signal of the device of spontaneous emission in the future sends into IC ₄₂IN end, a termination positive supply at its other two ends, other end ground connection enters IC ₄₂The signal of 2 pin obtains decoding output through after the decoding processing at corresponding output port, and it is corresponding one by one with 18 buttons of radiating circuit that decoder has 18 road output ports.R ₄₃, C ₄₁₀With IC ₄₂Inner oscillator (OSC) constitutes clock source, C ₄₁₁, C ₄₁₂Be IC ₄₂The external circuit electric capacity of interior coding check circuit.According to receiving crawl coding and all SP of continuous programming code signal that reflector sends ₄₁-SP ₄₁₀The decoded signal of output is the 160ms high level, every HP ₄₁-HP ₄₆The decoding of output is a high level when button is pressed, and unclamps button and just returns low level, be i.e. keying formula level.CP ₄₁, CP ₄₂End output point artery has the memory character of switch towards level.If as seen with regard to IC ₄₂Function remove start, the shutdown two states of control appliance, the control that can only operate 10 road audio-visual devices power supplys that 18 keys are maximum, the utility model SP of output port that will decode for this reason ₄₁-SP ₄₁₀And HP ₄₁, CP ₄₁, CP ₄₂Totally 13 road ports have designed by d type flip flop IC ₄₃-IC ₄₁₅The memory switch circuit of serving as, the D termination Q end of d type flip flop integrated circuit, the Q end connects the base stage that drives triode for the output of memory switch through resistance, whenever pressing the teleswitch output port of once decoding accordingly high level just takes place triggers, once inside out will take place in d type flip flop, and the Q end high potential just occurs and drives the actuating of relay and remember triggering next time always.So just solved with a button and just can finish the start to equipment, the memory of shutdown two states.The utility model is connected grounded emitter, collector connecting relay coil, relay coil another termination positive source through resistance R with the base stage that drives triode with the Q end of d type flip flop.The fly-wheel diode positive pole connects collector electrode, and negative pole connects positive source.Thereby constituted the memory switch element circuit.The make and break contact that the normal opened contact of relay is exported as decoding, triode conducting when Q brings out existing high potential, the relay adhesive, contact is connected, and triode ends when the Q end is electronegative potential, relay dispensing, contact disconnection.Solved single key stroke to device power-up, shutdown.R among the figure ₄₄, C ₄₁₆Be the startup clear circuit of memory switch, R ₄₄One termination power positive pole, C ₄₁₆An end ground connection, R ₄₄With C ₄₁₆Tie point be connected with the clear terminal of d type flip flop.The utility model is connected across 10 road relay tips of memory switch circuit on the two-end-point of 10 way switch in the switch panel of rack, just can implement start, shutdown straighforward operation to equipment when switch is in " standby " (disconnection) position.For alleviating IC ₄₂Load, the utility model is with IC ₄₂CP ₄₁, CP ₄₂The memory output of end has also added the memory switch circuit, so also greatly facilitates the arrangement of button on the remote control mobile phone, and it is to have the memory switch function that 13 keys are promptly arranged.13 the tunnel have the memory switch function in 18 road output ports, wherein 11 the tunnel are used as power supply control, 1 tunnel (CP ₄₂) being used for the input and the excision of guide sound strong system, 1 tunnel (G end) stays when doing remodeling standby.Remaining 5 tunnel keying leverl output ports, wherein 1 tunnel (HP ₄₂) be used for controlling the switching of audio frequency and video switching signal.The decoding output of 4 tunnel remaining keying leverls has 2 road F, D end to be used for controlling electronic total volume (in the frame of broken lines), has 2 road J, K end to stay when doing remodeling standby.The receiving circuit power supply E of remote control _C41Adopt typical full-wave rectifying circuit filtering after supply with after the LM7805 voltage stabilizing, the memory switch power supply E of remote control circuit _C42By D ₄₆, D ₄₇Provide behind the rectifying and wave-filtering.Transformer B ₄₁, B ₄₂The primary side cross-over connection on two end points of a, the b of the total power switch on the switch panel, after the total power switch closure, the remote control circuit working power is devoted oneself to work, this moment, the operating and remote controlling mobile phone just can be implemented straighforward operation to equipment in the audio-visual rack and function.

Fig. 5 is a purifying and pressure stabilizing power circuit diagram among Fig. 1.IC among the figure wherein ₅₁-IC ₅₄Model is LM324.Form by electromagnetic type low pass filter and regulation voltage circuit.Contaminated electrical network often will disturb introducing equipment by outlet, and will be very big to the audio-visual devices influence.The electromagnetic type low pass filter adopts the magnet ring of Φ 80, N ₅₁, N ₅₂Two coils DT and among prejudice Fig. 5 with the high strength enamelled wire coiling of Φ 1.Battery main switch adopts double-pole type, N ₅₁Port of load-side of a termination power master switch, N ₅₂Another port of the b termination power master switch load-side of coil.Be connected to the low-pass filtering capacitor C between a end and the b end ₅₇, C ₅₈C ₅₇With C ₅₈Series connection rear center's point ground connection, C ₅₇Another termination a, C ₅₈Another termination b.N ₅₁The other end a ' and the N of coil ₅₂Be connected to the low-pass filtering capacitor C between the other end b ' of coil ₅₉High order harmonic component in order to the interference of bypass normality.When normality interference and common mode disturbances appear in electrical network, disturb harmonic wave through C ₅₇, C ₅₈Go into ground, utilize the choking effect normality high order harmonic component of electromagnetism to produce the harmonic impedance pressure drop through C ₅₉Bypass causes ground, uses N simultaneously ₅₁And N ₅₂Coil around to the choked flow effect that produces common mode disturbances, and to reciprocal alternating current by the time two magnetic circuit magnetic fluxs offset these characteristics of no droop loss, flowing through the common mode disturbances electric current between two coils then produces resultant flux and manifests huge inductance, form choked flow, effectively suppress the common mode Harmonic Interference, purified power supply.

The output a ' of power conditioner joins with the tap 3 of voltage regulator circuit autotransformer by the contact series connection back of regulating relay.The output b ' of power conditioner joins with the common port of autotransformer.Thereby power conditioner has entered voltage regulator circuit.Voltage regulator circuit becomes device B by self coupling _Z, comparator IC ₅₁-IC ₅₄, triode T ₅₁-T ₅₄, relay J ₅₁-J ₅₄Constitute.Autotransformer B _ZThe outlet a ' end of tap 3 termination power conditioners, wherein 1 end is that common port is that each tap is shared, is connected autotransformer B with b ' end _ZDo not comprise tap 3 ends, the switching during pressure regulation when being provided with the third gear tap altogether in order to 175V, 205V, 235V.The working power of regulating circuit is by transformer B in the circuit ₅₀Through D ₅₅-D ₅₆Rectification, C ₅₅Filtering and IC ₅₀After the voltage stabilizing IC ₅₁-IC ₅₄And peripheral circuit provides working power EC ₅₀B ₅₀Primary side be connected on 2 of a, the b, as total power switch K ₆₁₁Drop into back B ₅₀Just start working EC ₅₀Output services voltage.Start delay circuit by IC ₅₁And peripheral circuit constitutes.IC ₅₁In-phase end and R ₆₃And C ₅₆Join R ₆₃Another termination positive source, C ₅₆Other end ground connection, R _W51With R ₅₁Be IC ₅₁The divider resistance of end of oppisite phase, IC ₅₁Output through resistance R ₅₉With triode T ₅₁Base stage join T ₅₁Grounded emitter, collector connecting relay J ₅₁Coil one end, another termination positive source of coil, sustained diode ₅₁Positive pole connects the collector electrode negative pole and connects positive source.Voltage regulator circuit is by IC ₅₂-IC ₅₄And peripheral circuit constitutes.R _W52With R ₅₂Be IC ₅₂The divider resistance of end of oppisite phase, R _W53With R ₅₃Be IC ₅₃The divider resistance of end of oppisite phase, R _W54With R ₅₄Be IC ₅₄The divider resistance of end of oppisite phase.IC ₅₂-IC ₅₄Output respectively through resistance R ₆₀-R ₆₂With corresponding T ₅₂-T ₅₄Transistor base connect, transistor collector connects coil one end of relay separately, the coil other end all connects positive source, each transistor emitter ground connection.Diode D ₅₁-D ₅₄Be J ₅₁-J ₅₄Fly-wheel diode, capacitor C ₅₁-C ₅₄Be J ₅₁-J ₅₄The anti-electric capacity that quivers of the contact of relay, IC ₅₂-IC ₅₄In-phase end respectively through resistance R ₅₆-R ₅₈With sampling adjustable resistance R _W55Center head join R _W55An end ground connection, R _W55Another termination rectifier diode D ₅₅And D ₅₆Negative pole as the sampling input.J when relay is not charged ₅₁-J ₅₄Contact J _C51-J _C54Be connected into series system, wherein J _C51Be the delayed startup contact.J during connection _C51Normal opened contact and J _C52Moving contact join and J _C52Normally closed contact again with J _C53Moving contact join.J ₅₃Normally closed contact again with J ₅₄Moving contact join because J _C54Moving contact and normally closed point connect, so join, work as J through normally closed contact and autotransformer tap 3 _C51Timing closing just constitutes 220V normal power supply mode after circuit is connected.During power network fluctuation, the voltage of fluctuation is through D ₅₅, D ₅₆Rectification and C ₅₅Filtering be added in R _W55Two ends through sliding contact with signal through resistance R ₅₆-R ₅₈Introduce comparator IC ₅₂-IC ₅₃In-phase end, the relay utmost point relevant with three comparator comparison rear drives closes, thereby regulates the tap that autotransformer connects.Work as line voltage change procedure repeat circuit J between 175V-235V among the embodiment of the present utility model ₅₂, J ₅₃, J ₅₄The order adhesive respectively with tap 5,4,3,2 corresponding connections, reaches the purpose of regulation voltage.The utility model repeat circuit contact J _C52, J _C53The secured fashion power supply of connection voltage when having guaranteed to start, the loop of leading to feeder ear when promptly starting is through J _C54The tap 3 of normally closed and autotransformer connect, this moment J _C52, J _C53And be in off-state for this reason between the tap 5,4, the high voltage that mistuning do not occur when guaranteeing to start.R ₆₃, C ₅₆Constituted and started time-delay, C after starting ₅₆Through R ₆₃C is worked as in charging ₅₆Two terminal potentials are higher than IC ₅₁Relay J behind the end of oppisite phase current potential ₅₁Adhesive, J _C51The normal opened contact closure is through J _C52, J _C53, J _C54Normally closed and autotransformer tap 3 connect and finishing the time-delay power supply.R in the debug process _W51Rise to adjust and start time-lag action.R _W52, R _W53, R _W54Be respectively IC ₅₂, IC ₅₃, IC ₅₄The definite value potentiometer, adjust their big I and determine relay J ₅₂, J ₅₃, J ₅₄Action definite value during at voltage ripple of power network.The output a ' of purifying and pressure stabilizing power supply when normal line voltage via relay J _C54, J _C51Moving contact after become a " end received the power supply buses L end of switch panel circuit, and the output b ' of purifying and pressure stabilizing power supply is drawn out to the power supply buses N end of switch panel by the common port of autotransformer.

Fig. 6 is a switch panel circuit diagram among Fig. 1.Switch is installed on the center panel of rack, and corresponding indicator light is equipped with in the switch top, and indicates the title of corresponding audio-visual devices.Rack switch panel of the present utility model partly is the interface circuit of purifying and pressure stabilizing circuit, remote control memory switch and manual control.On the switch panel also by remote control receiver window and total volume potentiometer are housed.

The switch panel circuit is to be made of jointly the normal opened contact of 11 switches, 11 tunnel remote control memory switchs, No. 11 fuses, No. 11 power supply indicator circuit and 10 tunnel supply sockets.Wherein the 1 the tunnel is total power switch, and all the other 10 the tunnel are the power control switch of audio-visual devices.Total power switch K ₆₁₁Be double-pole switch, end opening meets two-way fuse FS ' ₆₁₁, FS " ₆₁₁, the other end of the molten device that continues of two-way meets the remote control memory switch contact J ' of general supply respectively _C411, J " _C411, J ' _C411, J " _C411The other end receive a point and b point respectively.The primary side of remote control working power transformer is connected on again on the outlet a, b port of total power switch, because the remote control circuit power supply drops into, just can operate J so press the button of general supply on the remote control mobile phone after the total power switch closure ₄₁₁Adhesive makes the input of general supply.

Other 10 way switch on the switch panel respectively with remote control circuit in corresponding 10 road memory switchs normal opened contact mutually and connect, i.e. J _C41-J _C410Respectively with K switch ₆₁-K ₆₁₀Be connected in parallel, the L that constitutes power supply buses that is linked together suitable for reading with 10 way switch holds and purifying and pressure stabilizing circuit relay electrical equipment J then ₅₁Moving contact be a " end join, the end opening of 10 way switch connects an end of fuse separately, the other end correspondence of each fuse meets out-put supply socket (Z separately ₁-Z ₁₀) an end.Each out-put supply socket (Z ₁-Z ₁₀) the other end common port b ' that is linked together the N end that constitutes power supply buses and power conditioner autotransformer join.Also be connected to R among the dropping resistor of indicator light circuit such as the figure at the tie point of each road fuse and socket ₆₁-R ₆₁₀, R ₆₁-R ₆₁₀The other end sending and receiving optical diode LED of resistance ₆₁-LED ₆₁₀Positive pole, LED ₆₁-LED ₆₁₀Negative pole together be connected to b ' end.Diode D ₆₁-D ₆₁₀Negative pole corresponding LED respectively ₆₁To LED ₆₁₀Positive pole join D ₆₁To D ₆₁₀Positive pole meet LED ₆₁To LED ₆₁₀Negative pole, i.e. b ' end.Diode D ₆₁-D ₆₁₀To LED ₆₁-LED ₆₁₀Exchange negative half period and play the reverse-voltage protection effect.Corresponding indicator light is lighted behind switch closure, and respective socket is charged simultaneously.

Fig. 7 is a sound intensity display light screen system circuit theory diagrams among Fig. 1.IC among the figure wherein _7LModel is LM741, IC ₁-IC ₂₇Model is LM324.Optical screen is installed in branch and arranged on left and right sides on the rack.Sound intensity demonstration optical screen is made up of LED light-emitting diode light beam, and every optical screen has 10 row light beams, the brown organic transparent face mask of outer cover.The inboard inferior horn of face shield is equipped with sensitivity regulates turn-knob.MIC _LBe left side electret pick-up, MIC _RBe the right side electret pick-up, be installed in brown organic transparent face mask the inside respectively.IC _7L, IC _7RServe as left side, the amplification of right side acoustic field signal respectively.Two lateral circuits are identical.Now set forth with the left side circuit.MIC _LAn end ground connection, another termination dropping resistor R _7L, R _7LAnother termination positive source is from MIC _LWith R _7LLink is drawn capacitor C ₇₁, C ₇₁Another termination sensitivity potentiometer R _W7LAn end, R _W7LOther end ground connection, R _W7LThe central slide point meet IC ₇₁In-phase end, anti-phase termination R _7AAnd R _7BDividing point, R _7AOther end ground connection, R _7BAnother termination IC _7LOutput, IC _7LThe be connected in parallel row driving amplifier IC of 10 row LED light beams of output ₇₁-IC ₇₁₀In-phase end, end of oppisite phase connects by R respectively _W71-R _W710And R ₇₁-R ₇₁₀The dividing point that constitutes, R ₇₁-R ₇₁₀One end ground connection is all arranged, and other end correspondence respectively meets R _W71-R _W710" 1 " end, correspondence is received IC then ₇₁-IC ₇₁₀End of oppisite phase, R _W71-R _W710" 2 ", " 3 " end receive IC after connecting ₇₁-IC ₇₁₀Corresponding output, IC ₇₁-IC ₇₁₀The output correspondence be connected to the input IN of NO:1-NO:10 row LED light beam ₁-IN ₁₀, each row LED light beam is made of 27 light-emitting diodes, finishes driving by 27 drive comparators.Because of the circuit of every row is all identical, now classify example explanation, IC as with first ₇₁Amplifying signal is inputed to the input IN of first row ₁End is followed 27 in-phase ends that drive comparators at input, and 27 end of oppisite phase that drive comparators are followed 27 dividing point F ₁-F ₂₇, 27 dividing points are by R ₇₁₁-R ₇₁₂₈28 resistance polyphone dividing potential drops and form R ₇₁₁Lower end ground connection, R ₇₁₂₈Last termination positive source, 27 outputs that drive comparators are respectively through resistance R ₁-R ₂₇Receive the positive pole of each self-corresponding light-emitting diode, the light-emitting diode minus earth.Constitute all the other 9 row as a same reason.Acoustic field signal enters MIC after sound system starts _L(MIC _R) after IC _7L(IC _7R) amplification, enter into amplifier IC ₇₁-IC ₇₁₀Do and promote to amplify 27 driving comparator IC that enter every row again ₁-IC ₂₇, through comparing rear drive LED ₁-LED ₂₇Lumination of light emitting diode.The times magnification number average of every column amplifier is adjustable, can select the figure of 10 row light beams by the adjustment of times magnification device, the utility model adopts comparator type in every column drive circuit, the brightness that it is characterized in that light beam is not along with signal amplitude changes, and the dynamic amplitude of light beam is with the signal changes in amplitude.

Working power is by transformer B ₇₁Through diode D ₇₁, D ₇₂Supply with after the rectifying and wave-filtering voltage stabilizing.B ₇₁Primary side is being connected in series banked relay contact J _C412, it is implemented the remote control input.

Fig. 8 is Fig. 1 middle pitch video switch circuit figure.IC among the figure wherein ₈₁Model is LM741, IC ₈₂Model is CD4017.IC among Fig. 8 ₈₁, IC ₈₂And peripheral circuit constitutes the utility model audio frequency and video commutation circuit.The input terminal of its audio-video signal, lead-out terminal are installed in rear of cabinet central authorities below.IC ₈₁Finish level shifter.By the output port of decoding in the remote control circuit " H " end and R ₈₂₆Join R ₈₂₆The other end and IC ₈₁In-phase end join IC ₈₁End of oppisite phase ground connection, the smothing filtering capacitor C ₈₂₈A termination IC ₈₁In-phase end, other end ground connection.The signal of being brought in by " H " is through C ₈₂₈Smoothly through IC ₈₁Level shift, by IC ₈₁Export IC to ₈₂Input, E among working power and Fig. 4 _C42Join.

IC ₈₂Be the control circuit that audio frequency and video are switched, IC ₈₂Be operated in the state of shift register.IC ₈₂Can realize the output of 10 decodings.As level shifter IC ₈₁Pin 3 output high potentials when the 1st pulse arrives, pin 2 output high potentials when the 2nd pulse arrives, corresponding pin 4 became high potential when the 3rd pulse arrived, pin 7 was a high potential when the 4th pulse arrived, pin 10 was a high potential when the 5th pulse arrived, pin 1 was a high potential when the 6th pulse arrived, pin 5 was a high potential when the 7th pulse arrived, pin 6 was a high potential when the 8th pulse arrived, 8 pulses make above-mentioned leading foot in turn or be chosen as the control signal that high potential constitutes diverter switch, export the audio-video switch circuit to.

The audio-video switch circuit is divided into audio-frequency unit and video section.Audio switch is by relay J _C81-J _C88, triode T ₈₁-T ₈₈Serve as J _C81-J _C88Employing is two opens contact, can be switched on or switched off the left and right acoustic channels of 8 tunnel audio transmission simultaneously, and wherein preceding 4 tunnel dual tracks are the audio frequency apparatus signal, and back 4 tunnel is the audio signal of video equipment.As Fig. 8 _aShown in: 8 tunnel audio signals are passed through JK ₁-JK ₈Through C ₈₁-C ₈₁₆With J _C81-J _C88The first end of the movable contact of normal opened contact joins, J ' in the normal opened contact _C81, J ' _C82, J ' _C83, J ' _C84, J ' _C85, J ' _C86, J ' _C87, J ' _C88An end connect and to be linked together after R ₈₂₃Meet total volume potentiometer R _W911 _aEnd, R _W911 _bConnect L sound channel output, at normal opened contact J ' _C81-J ' _C87Parallel connection point on draw through resistance R ₈₂₁And C ₈₂₁Ground connection is as contact " noise made in coughing or vomiting loudspeaker " sound absorption circuit.J " _C81, J " _C82, J " _C83, J " _C84, J " _C85, J " _C86, J " _C87, J " _C88An end connect and to be linked together, through R ₈₂₄Meet total volume potentiometer R _W912 _aEnd, 2 _bConnect the output of R sound channel, R _W911 _c, 2 _cEnd ground connection.At J " _C81-J " _C88Lian Liandian on draw through resistance R ₈₂₂And C ₈₂₂Ground connection is as contact " noise made in coughing or vomiting loudspeaker " sound absorption circuit.With L, R output respectively through C ₈₂₃, C ₈₂₄And then pair of output J _K14The output of 1 route road is provided.Capacitor C in the drawings ₈₁-C ₈₁₆With J ' _C81-J " _C88Be connected to resistance R on the end points that joins ₈₁-R ₈₁₆, R ₈₁-R ₈₁₆Other end ground connection.Fig. 8 _bShown in, triode T ₈₁-T ₈₈For driving triode, triode T ₈₁-T ₈₈Base stage respectively through resistance R ₈₃₀-R ₈₄₁With IC ₈₂3 pin, 2 pin, 4 pin, 7 pin, 10 pin, 1 pin, 5 pin, 6 pin correspondingly connect T ₈₁-T ₈₈Collector electrode meet J ₈₁-J ₈₈Coil one end, J ₈₁-J ₈₈Another termination working power positive pole of coil, T ₈₁-T ₈₈The equal ground connection of emitter.Diode D ₈₁-D ₈₈Be fly-wheel diode, positive pole correspondence respectively is connected to T ₈₁-T ₈₈Collector electrode, negative pole connects the positive pole of working power.

Circuit relay electrical equipment J ₈₉-J ₈₁₂, triode T ₈₉-T ₈₁₂And corresponding Resistor-Capacitor Unit constitutes the video conversion switch circuit.J _C89-J _C812For singly opening contact, 4 tunnel vision signals are passed through JK ₉-JK ₁₀Through C ₈₁₇-C ₈₂₀With J _C817-J _C820The first end of the movable contact of normal opened contact connect J _C89-J _C812The other end of normal opened contact links together after resistance C ₈₂₆Meet output JK ₁₅, at C ₈₂₆With the junction of output through capacitor C ₈₂₇With another output JK ₁₆Connect, 1 road video line output signal is provided.J _C817-J _C820Draw through resistance R on the end points that normal opened contact connects ₈₂₅And capacitor C ₈₂₅" noise made in coughing or vomiting loudspeaker " sound absorption circuit of ground connection.Capacitor C in the drawings ₈₁₇-C ₈₂₀With J _C89-J _C812Correspondence is connected to resistance R on the end points that joins ₈₁₇To R ₈₂₀, R ₈₁₇To R ₈₂₀Other end ground connection.Triode T ₈₉-T ₈₁₂Base stage respectively through resistance R ₈₃₈-R ₈₄₁With IC ₈₂10 pin, 1 pin, 5 pin, 6 pin correspondingly connect T ₈₉-T ₈₁₂Collector electrode meet J ₈₉-J ₈₁₂Coil one end, J ₈₉-J ₈₁₂Another termination working power positive pole of coil, grounded emitter.Diode D ₈₉-D ₈₁₂Be fly-wheel diode, positive pole correspondence respectively is connected to T ₈₉-T ₈₁₂Collector electrode, negative pole connects the working power positive pole, works as IC ₈₂10,1,5,6 pin to high potential when output should be arranged, drive corresponding triode, make the corresponding relays adhesive, junction closure realizes that the selection of vision signal switches, simultaneously corresponding audio signal is also followed switching immediately.Thereby realize the synchronous switching of 4 road videos and 4 road audio frequency.

Fig. 9 is sound-volume control system circuit theory diagrams among Fig. 1.The utility model will enter the total signal volume of two-way of power amplifier and carry out the volume control of remote control mode.Total volume potentiometer R _W91Be installed on the cabinet front switch panel.

Total volume potentiometer R _W91Adopt duplex coaxial electrical flowing mode, R _W91" 1 _a", " 2 _a" end meets the R of the audio frequency output of audio frequency and video commutation circuit respectively ₈₂₇And R ₈₂₈Output one side, " 1 _b", " 2 _b" the termination lead-out terminal, " 1 _c", " 2 _c" end ground connection.

Total volume control circuit is by R ₉₁, R ₉₂, C ₉₁, C ₉₂, T ₉₁, T ₉₂, J ₉₁, J ₉₂, M ₉₁, C _M1, C _M2Form, wherein M ₁With R _W91Coaxial.R ₉₁A termination Fig. 4 in remote control circuit IC ₄₁F end, R ₉₂Termination D end, R ₉₁, R ₉₂The other end meet triode T respectively ₉₁, T ₉₂Base stage, T ₉₁, T ₉₂Base stage be connected to capacitor C respectively between over the ground ₉₁, C ₉₂, T ₉₁, T ₉₂Grounded emitter, T ₉₁Collector electrode meets J ₉₁One end of coil, T ₉₂Collector electrode meet J ₉₂One end of coil, J ₉₁, J ₉₂The other end of coil together connects positive source, sustained diode ₉₁, D ₉₂Positive pole meet T respectively ₉₁, T ₉₂Collector electrode, negative pole together connects positive source, relay J ₉₁, J ₉₂The normal opened contact back ground connection that is connected together, the normally closed contact positive source that is connected together, J ₉₁, J ₉₂Moving contact connect the two ends of direct current machine respectively.IC when the operating and remote controlling correspondent button ₁F T when bringing out existing high level ₉₁Conducting, J ₉₁Adhesive, J ₉₁Normally closed closing, motor rotates transmission and makes R _W91Thereby resistance increases and changes signal amplitude and volume, works as IC ₁D T when bringing out existing high level ₉₂Conducting, relay J ₉₂Adhesive, J ₉₂Normal opened contact closure, motor are rotated transmission R round about _W91Resistance reduces, thereby reduces volume.Capacitor C _M1, C _M2Be buffer capacitor avoid motor unexpected when charged moment add the large impact potentiometer suddenly.C _M1With C _M2Oppositely polyphone constitutes polarity free capacitor.

Figure 10 is an automatic ventilation circuit system schematic diagram among Fig. 1.IC among the figure wherein ₁₀₁Model is LM358.The automatic ventilation control section is by IC ₁₀₁, triode T ₁₀₁, relay J ₁₀₁, instrument air fan and peripheral circuit constitute, instrument is installed on the rack interlayer backboard of rack lower-left side and lower right side with fan, is connected with control section by lead.E in the working power map interlinking 5 wherein ₅₀The end, among the figure by thermistor R _T1, R _T2Back in parallel and R ₁₀₁Constitute dividing potential drop, dividing point meets comparator IC ₁₀₁In-phase end, R _T1, R _T2Last termination E _C10, R ₁₀₁Lower end ground connection, IC ₁₀₅End of oppisite phase and resistance R ₁₀₂With R ₁₀₃Dividing point joins, R ₁₀₂Last termination power E _C10, R ₁₀₃Lower end ground connection constitute dividing potential drop definite value, IC ₁₀₁Output through R ₁₀₄Meet triode T ₁₀₁Base stage, grounded emitter, collector electrode is through relay coil and power supply E _C10Connect diode D ₁₀₁Negative pole meet E _C50Anodal and collector electrode joins.A point in the one termination power conditioner circuit of relay normally open contact.Another termination instrument one end of fan electromotor, the b point in another termination clean circuit of fan electromotor.The utility model places the rack both sides to place in the cabinet of video equipment respectively thermistor, after in-cabinet temperature raises, makes R _T1Perhaps R _T2Resistance descend and to cause IC ₁₀₁The in-phase end current potential raises.Because end of oppisite phase is the current potential of setting according to normal temperature, so be output as high potential driving T when temperature rise causes to make after the in-phase end current potential raises ₁₀₁Conducting, relay J ₁₀₁Adhesive is connected on the contact J ' in the instrument air fan alternating current 220V loop _C101, J " _C101Closure makes fan M _F1, M _F2Start cooling.IC after temperature reduces ₁₀₁The output electronegative potential, relay J ₁₀₁Dispensing, J _C101Disconnect the left alone without help commentaries on classics of fan.Having realized the heat protection to audio-visual devices, is very necessary and effective for the mode of using courage type power amplifier especially.

The utility model concentrates on home audio-visual devices on a kind of rack that collects the prosecutor formula, implements management of power supply current collection and Full Featured straighforward operation, has increased fail safe, reliability and practicality.Sound intensity Presentation Function of the present utility model is very necessary for the intensity of control room sound field in rack.Intuitively, conveniently, novel form, the function of utilization rack not only can effectively be protected audio-visual devices, increase user that also can be bigger in rating, listen to the temperament and interest in the process, improve the utilization rate of equipment.

Claims (7)

1, a kind of Full remote controlled multi-functional household audio-visual devices rack is divided into rack and control system two parts, and rack is divided into the switch control panel, the sound intensity shows optical screen and interlayer three parts; Control system is divided into shakes control circuit, purifying and pressure stabilizing circuit, switch panel circuit, sound intensity display circuit, audio frequency and video commutation circuit, volume control circuit and automatic ventilation circuit seven parts formation, it is characterized in that rack is horizontal, switch by power supply control is housed above cabinet front central authorities shakes the switch panel that control receive window and total volume potentiometer constitute.The switch panel both sides is an interlayer of placing audio-visual devices, is divided into left side interlayer and right side interlayer, and interlayer one example in left side shows optical screen near the left side sound intensity, and the right side interlayer one side sound intensity that keeps right shows optical screen; Circuit in the control system is installed in the rack, the output of infrared receiving circuit is connecting the input of decoding integrated circuit, 18 road output ports of decoding integrated circuit have 13 road outputs connecting the memory switch circuit, have 1 the tunnel to be the general supply control relay in the relay tip of 13 road memory switch circuit, relay seals in the double-pole loop of total power switch for two group normal opened contacts, there is the contact of No. 10 relays to be connected across the power control switch two ends of switch panel, also have 1 tunnel transformer primary side that is connected on the electric power loop of sound intensity optical screen display circuit, have 1 the tunnel stay when doing remodeling standby; The two-way keying output (F end, D end) that shakes the control decoding integrated circuit is connecting volume control circuit two-way relay drive circuit, the normally closed contact of two-way relay is associated in and connects positive source together, normal opened contact ground connection in parallel, two-way relay tip moving contact connects the direct current machine two ends of electronic coaxial duplex potentiometer respectively; Electronic coaxial duplex potentiometer is connected on the output of frequency switch circuit; The switching circuit input that 1 road keying output H in addition and the audio frequency and video of remote control decoding integrated circuit are switched is connected, and 8 tunnel outputs of audio frequency and video switching switch circuit are connecting relay drive circuit, relay J ₈₁-J ₈₈With the normal opened contact incoming audio signal input circuit of connecting, 10 pin of audio frequency and video switching switch circuit output, 1 pin, 5 pin, 6 pin are also connecting the drive circuit of 4 road video switch relays, relay J simultaneously ₈₉-J ₈₁₂With the normal opened contact incoming video signal input circuit of connecting; Switch panel other end bus N end joins with the common port b ' of autotransformer; The total power switch power supply that gets access to grid suitable for reading on the switch panel, end opening meets fuse FS ' ₆₁₁, FS " ₆₁₁, fuse FS ' ₆₁₁, FS " ₆₁₁End opening connects remote control memory switch relay J ₄₁₁Normal opened contact J ' _C411And J " _C411An end, J ' _C411And J " _C411The other end connect purifying and pressure stabilizing circuit inlet a point and b point respectively, the output a ' of power conditioner joins through the series connection contact and the switch panel bus L end of voltage stabilizing regulating relay, the L end that all connects the switch panel bus suitable for reading of all the other 10 way switch on the switch panel, the end opening of 10 way switch all is connected the N end of another termination switch panel bus of socket by melting the device that continues separately with corresponding supply socket; Sound intensity optical screen is made of 10 row light-emitting diodes; The electret pick-up head be installed in display light panel plate organic mask below, by the lead-in wire with sound intensity signal amplifier IC _7L(IC _7R) connect the outlet of signal amplifier and 10 row driving amplifier (IC ₇₁-IC ₇₁₀) the input connection, the output of every row driving amplifier is connected with the driving comparator input terminal (in-phase end) of each light-emitting diode, and the end of oppisite phase correspondence that every row drive comparator is connected to R _7n1-R _7n28Dividing point (n represents column), the output that drives comparator is through resistance sending and receiving optical diode positive pole, light-emitting diode minus earth; Two thermistors of automatic ventilation circuit are installed in respectively in the audio-visual rack interlayer, are connected with comparator input terminal after two thermistor parallel connections, and comparator output terminal is succeeded electrical apparatus driving circuit, and the contact of relay seals in the startup loop of fan electromotor.

2, according to the multi-functional household of Full remote controlled described in the claim 1 audio-visual devices rack, it is characterized in that rack is horizontal, switch panel is equipped with in the top in cabinet front central authorities, the remote signal receiver window is housed on the switch panel, total volume electro kinetic potential device knob and 11 road mains switches, wherein 1 the tunnel is total power switch, the corresponding indicator light of switch top dress, indicator light is marked with the title consistent with audio-visual devices with panel between the switch, fuse corresponding with switch and supply socket are installed in rear of cabinet central authorities, the signal input that audio frequency and video are switched is equipped with in the below of back side central authorities, lead-out terminal, cabinet front switch panel both sides are interlayers of placing audio-visual devices, near left and right sides interlayer be that the sound intensity shows optical screen, be connected with plank between both sides interlayer and the sound intensity demonstration optical screen.

3,, it is characterized in that the sound intensity shows that optical screen is to be made of the brown organic mask of 10 row LED light-emitting diode outer covers, is equipped with the potentiometer of adjustment sensitivity at the inboard inferior horn of face shield according to the multi-functional household of Full remote controlled described in the claim 1 audio-visual devices rack.

4,, it is characterized in that the sound intensity shows that the optical screen circuit adopts electret pick-up to be installed in the having below the hood of tank surface that the sound intensity shows optical screen according to the multi-functional household of Full remote controlled described in the claim 1 audio-visual devices rack.

5, according to the multi-functional household of Full remote controlled described in the claim 1 audio-visual devices rack, it is characterized in that the back side of rack is installed with the instrument fan.

6, according to the multi-functional household of Full remote controlled described in the claim 1 audio-visual devices rack, it is characterized in that the output employing d type flip flop of remote control circuit and the memory switch circuit that relay constitutes, the D termination Q end of d type flip flop, the Q end is connected with the driving transistor base through resistance, the grounded emitter of triode, collector connecting relay coil one end, another termination positive source of coil, the fly-wheel diode positive pole connects collector electrode negative power supply positive pole, and the switch ends that contact is connected in parallel on switch panel left by relay.

7, according to the multi-functional household of Full remote controlled described in the claim 1 audio-visual devices rack, the memory switch circuit of d type flip flop and relay formation is adopted in the output that it is characterized in that remote control circuit, d type flip flop put " 0 " termination R ₄₄With C ₄₁₆Tie point, R ₄₄Another termination E _C42, C ₄₁₆Other end ground connection.

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