CN102594325B - Control system with energy-saving automatic switching electronic device - Google Patents

Abstract

The invention provides a control system with an energy-saving automatic switch electronic device, which comprises at least one front-end device, a control device and at least one back-end device, wherein the front-end device is used for transmitting an audio-video signal; whether the front-end equipment transmits the audio-video signals or not is detected through the control device, so that the power supply state of the audio-video control unit and/or the rear-end equipment in the control device is automatically controlled, and the energy-saving effect is effectively achieved.

Description

Control system with energy-saving automatic switching electronic device

technical field

The invention relates to a control system with an energy-saving automatic switch electronic device, in particular to a control system with an energy-saving automatic switch electronic device that saves power and reduces the consumption of parts and components.

Background technique

Please refer to FIG. 1, which shows a block diagram of an existing audio-visual control system; the audio-visual control system 1 includes multiple front-end devices 10, multiple analog/digital (Analogue to Digital Converter, referred to as ADC) converters 11, and multiple digital/analog (Digital to Analogue Converter, referred to as DAC) A converter 12 , a standby power supply 15 , a central processing unit 17 , an audio-video selector 13 , a power management control unit 16 and a back-end device 14 .

The front-end equipment 10 is, for example, a DVD player, a multimedia video on demand (MOD) or a computer, which is used to output an analog video signal to a corresponding analog/digital converter 11 . The back-end device 14 is, for example, a display or a projector, which is connected to the video-audio selector 13 and the power management control unit 16 respectively, and the back-end device 14 is used to display the analog video-audio signal transmitted by the video-video selector.

1, the power management control unit 16 is respectively connected to the central processing unit 17 and the back-end equipment 14, which is used to manage and supply alternating current (AC) power to the back-end equipment 14, and the power management control unit 16 activates or deactivates the AC power of the backend equipment 14 according to a control signal. The standby power supply 15 provides direct current (DC) power to the corresponding analog/digital converter 11 and CPU 17 .

The multiple digital/analog converters 12 are respectively connected to the analog/digital converters 11, which are used to convert the received digital audio-visual signals into analog audio-visual signals, and then send them to the audio-visual selector 13, so that the audio-visual selector 13 Then play according to the selected analog video signal.

The analog/digital converter 11 is respectively connected to the front-end equipment 10, the central processing unit 17 and the standby power supply 15, and is used to convert the analog audio-visual signal into a digital audio-visual signal, and simultaneously determine whether there is an analog audio-visual signal input , to generate a notification signal and send it to the central processing unit 17.

The central processing unit 17 generates the control signal after knowing whether the front-end device 10 transmits analog audio-visual signals according to the notification signal, and controls the power management control unit 16 to turn on and off the back-end device 14 . For example, if the notification signal received by the central processing unit 17 indicates that there is an analog audio-visual signal to be transmitted, the control signal is transmitted to control the power management control unit 16 to activate the power of the back-end device 14 . If the notification signal received by the central processing unit 17 indicates that there is no analog audio-visual signal transmission, the control signal is sent to control the power management control unit 16 to turn off the power of the back-end device 14 to achieve energy saving.

Although the existing audio-visual control system can achieve the purpose of energy saving, its effect is not obvious, because when the analog audio-visual signal presents no picture or black picture, the analog audio-visual signal is a long low potential, which makes it easy to cause the analog/digital converter to 11 Misjudgment leads to the paralysis of the entire system and the doubts that it cannot continue to execute. Relatively, the audio-visual control system 1 has poor energy-saving effect. In addition, because the existing audio-visual control system 1 needs to convert the input analog audio-visual signal through multiple analog/digital converters 11 and multiple digital/analog converters 12, and during the conversion process, it is easy to cause the back-end equipment 14 to display The analog audio-visual signal has delay or distortion.

Furthermore, in actual use of the existing audio-visual control system 1 , the number of analog/digital converters 11 needs to match the number of digital/analog converters 12 , which increases the production cost.

As mentioned above, the prior art has the following disadvantages:

1. Poor energy saving effect;

2. Make it easy to attenuate the analog video and audio signals displayed by the back-end equipment;

3. Cost increase.

Therefore, how to solve the above-mentioned existing problems and deficiencies is the direction that the inventors of this case and related manufacturers engaged in this industry want to study and improve.

Contents of the invention

Therefore, in order to effectively solve the above-mentioned problems, the main purpose of the present invention is to provide a control device to detect whether at least one front-end device transmits an image signal, so as to automatically control the audio-visual control unit and/or in the control device. The power status of the back-end equipment makes it possible to effectively achieve power saving and a control system with energy-saving automatic switching electronic devices.

A secondary object of the present invention is to provide a control system with an energy-saving automatic switching electronic device with reduced wear and tear of components.

A secondary object of the present invention is to provide a cost-effective control system with energy-saving automatic switching electronics.

To achieve the above purpose, the present invention provides a control system with an energy-saving automatic switching electronic device, including at least one front-end device for transmitting an audio-visual signal, a control device and at least one back-end device, wherein the control device is respectively connected to the Front-end equipment and back-end equipment, and the control device includes: an audio-visual control unit connected to the back-end equipment, which transmits to the corresponding back-end equipment according to the format of the received audio-visual signal; at least one detection unit is respectively connected to the audio-visual The control unit and the front-end equipment, and generate a first signal according to whether there is an input of the audio-visual signal; a processing unit is respectively connected to the detection unit and the audio-visual control unit, and generates a second signal according to the state of the first signal signal; a power control switch controls the power state of the audio-visual control unit according to the second signal (that is, the control power state is start or sleep); and a standby power supply is respectively connected to the processing unit and the detection unit, which is used to supply Power is supplied to the processing unit and the detection unit.

Compared with the prior art, through the design of the control system of the present invention, the effect of saving power can be effectively achieved.

Description of drawings

Fig. 1 is a schematic diagram of an existing implementation block;

FIG. 2A is a schematic block diagram of a first preferred embodiment of the present invention;

Fig. 2B is another schematic block diagram of the first preferred embodiment of the present invention;

Fig. 3 is the implementation block diagram of the first preferred embodiment of the present invention;

FIG. 4 is a schematic block diagram of a second preferred embodiment of the present invention.

Explanation of reference numerals: control system-2; power control switch-224; front-end equipment-20; processing unit-225; first front-end equipment-201; back-end equipment-24; second front-end equipment-202; first back-end Equipment-241; third front-end equipment-203; second back-end equipment-242; fourth front-end equipment-204; third back-end equipment-243; control device-22; fourth back-end equipment-244; audio-visual control unit -221; fifth back-end device-245; detection unit-222; control interface-25; standby power supply-223; power management control unit-26.

detailed description

The above-mentioned purpose of the present invention and its structural and functional characteristics will be described according to the preferred embodiments of the accompanying drawings.

The present invention is a control system with an energy-saving automatic switching electronic device. Please refer to FIG. 2A, and FIG. 3 is a schematic diagram showing a first preferred embodiment of the present invention. Equipment 20, a control device 22 and at least one back-end device 24, wherein the front-end device 20 is electrically connected to the control device 22, and it is such as a voice playback device, an image playback device, an audio-visual multimedia playback device, a notebook computer, Any one of a computer and other electronic devices, but not limited thereto, in specific implementation, any device that can be used to output video and audio signals is called the front-end device 20 for this purpose.

In this preferred implementation, for the convenience of narration, the front-end equipment 20 will be described as four front-end equipment, wherein the first front-end equipment 201 is a multimedia video on demand (MOD), the second front-end equipment 202 is a DVD player, and the third front-end equipment 201 is a DVD player. The front-end device 203 is a computer, and the fourth front-end device 204 is a microphone, but when the present invention is actually implemented, the number of the front-end devices is not limited to the above-mentioned number, and can be added according to user needs.

Continue referring to Fig. 2A, supplemented by referring to Fig. 3, described back-end equipment 24 is electrically connected to this control device 22, and it is such as a display, a projector, a lighting device and other electrical products (such as curtain machine, lighting, air conditioner) System, audio equipment) any one of them, in this preferred implementation, the back-end equipment is represented by four back-end equipment, wherein the first back-end equipment 241 is a display, the second back-end equipment 242 is a projector, and the second back-end equipment 242 is a projector. The third back-end device 243 is an audio device, and the fourth back-end device 244 is a curtain machine.

The control device 22 includes an audio-visual control unit 221, at least one detection unit 222, a standby power supply 223, a power control switch 224 and a processing unit 225 respectively connected to the detection unit 222 and the audio-visual control unit 221, the audio-visual control unit 221 has the functions of video and audio distribution and video and video selection, and it is connected to the back-end equipment (that is, respectively connected to the corresponding first, second, third, and fourth back-end equipment 241, 242, 243, 244), and the video and audio control unit 221 According to the format of the received video and audio signal, it is transmitted to the corresponding back-end device for playback.

The format of the video signal includes AM broadcast, FM broadcast or other analog audio formats, NTSC video, PAL video, SECAM video or other analog video formats, RGB video, MPEG2 video, MPEG4 video, PCM audio, MP3 audio, MP4 audio, WAV audio, AIFF audio, AU audio, AAC audio, AVI video, RealMediavideo, RealAudio, Liquid audio, DIVX, REAL, QUICTIME, CSSDVD or VCD.

Continue referring to Fig. 3, described detection unit 222 is respectively connected with this audio-visual control unit 221 and front-end equipment 20, and it according to detection whether has this audio-visual signal input, and produces a first signal and sends to processing unit 225, makes this processing The unit 225 generates a second signal according to the state of the first signal (high potential or low potential) to control the action of the power control switch 224 (such as conduction or non-conduction); wherein the processing unit 225 is a central A processor (MCU), which can control the standby or sleep state of the back-end device 24 through wired (such as RS232) or wireless (such as infrared transmission) transmission.

For example, if the processing unit 225 is at a high potential according to the state of the first signal received, then the second signal is sent to control the power control switch 224 to be turned on, so that the power supply state of the audio-visual control unit 221 is activated, and the audio-visual control unit 221 is activated. Unit 221 continues to perform actions, and transmits the video and audio signals to the corresponding back-end equipment;

If the processing unit 225 is at a low potential according to the state of the first signal received, then the second signal is sent to control the power control switch 224 to be non-conductive, so that the power state of the audio-visual control unit 221 is in an off state and no action is performed. Therefore, it is detected by the detection unit 222 of the control device 22 without any conversion device to convert the signal, so that the audio-visual signal transmitted by the audio-visual control unit 221 to the corresponding back-end equipment will not be distorted or attenuated, thereby effectively saving cost and great energy savings.

In addition, in this preferred implementation, the detection units 222 represent four detection units 222 for illustration, that is, the number of the detection units 222 matches the number of the front-end equipment 20 . The power control switch 224 turns on and off the power supply state of the audio-visual control unit 221 according to the second signal, and in this preferred implementation, the power control switch 224 is selected to be set in the processing unit 225 as shown in FIG. 2B , that is, the power The control switch 224 and the processing unit 225 form an integrated circuit, or are set in the control device 22 as shown in FIG. 2A .

3, the standby power supply 223 is respectively connected to the processing unit 225 and the detection unit 222, which is used to supply power to the processing unit 225 and the detection unit 222 (ie four detection units 222). In addition, the control system 2 further includes a control interface 25 connected to the processing unit 225, and it is used for the user to input instructions into the processing unit 225, so that the processing unit 225 controls the corresponding backend according to the input instructions equipment.

For example, if the user wants to distribute the audio-visual signal of the second front-end equipment 202 to the first and second back-end equipment 241, 242 to play, the user must input the command from the control interface 25, and then input the input signal through the control interface 25. The instruction is transmitted to the processing unit 225, so that the processing unit 225 controls the audio-visual control unit 221 to distribute and transmit the audio-visual signal of the second front-end device 202 to the first and second back-end devices 241 and 242 for playback according to the input instruction.

If the user wants to select the audio signal of the fourth front-end device 204 to be sent to the third back-end device 243 at this time, after the user inputs the command from the control interface 25, the input command is passed to the control interface 25. The processing unit 225 enables the processing unit 225 to control the video-audio control unit 221 to select the audio signal of the fourth front-end device 204 and send it to the third back-end device 243 to play according to the input instruction.

In addition, because the audio-visual signal sometimes presents no picture or a black picture, the detection unit 222 will judge that the front-end equipment 20 has no audio-visual signal input, so in order to allow the detection unit 222 to detect and judge accurately, the user can control it in advance. The interface 25 sets a preset time (such as 2 minutes) and inputs it into the processing unit 225, so that the processing unit 225 compares the time with the preset time according to the state (low potential) of receiving the first signal. If the state (low potential) of a signal lasts longer than the preset time, the processing unit 225 judges that there is no audio-visual signal input, and then sends a second signal to control the power control switch 224 to be non-conductive, so that the power state of the audio-visual control unit 221 In the closed state, no action is performed.

If the state (low potential) time of receiving the first signal is less than the preset time, the processing unit 225 determines that there is still an audio-visual signal input, and then transmits the second signal to control the power control switch 224 to be turned on. The power supply state of the control unit 221 is an activated state, so that the audio-visual control unit 221 continues to perform operations.

Please refer to Fig. 4, which is a schematic diagram showing a second preferred embodiment of the present invention; the main structure, connection relationship and effects of the preferred embodiment are roughly the same as those of the first preferred embodiment, so they will not be repeated here. The difference between the two is that the control system 2 further includes a power management control unit 26, which is respectively connected to the processing unit 225, the front-end equipment 20 and the back-end equipment 24, and it is used to manage and supply power (this is an AC power supply) ) to the back-end equipment 24 and the front-end equipment 20, and control the power supply of the corresponding back-end equipment 24 and/or the front-end equipment 20 according to receiving the second signal. In this preferred implementation, the power management control unit 26 controls the power on and off of the corresponding back-end device 24 according to the second signal for illustration.

In addition, in this preferred implementation, the back-end equipment 24 is illustrated with five back-end equipment, wherein the first back-end equipment 241 is a display, the second back-end equipment 242 is a curtain machine and lighting, and the third back-end equipment 241 is a display. The end device 243 is an audio device, the fourth back-end device 244 is an air-conditioning system, and the fifth back-end device 245 is a projector.

Here is a specific example to illustrate:

When the first to fourth front-end equipment 201, 202, 203, 204 and the first to fifth back-end equipment 241, 242, 243, 244, 245 installed in a teaching place (such as a classroom) are in use, the detection unit 222 will always detect that the first to fourth front-end devices 201, 202, 203, 204 have audio-visual signal input, and send the first signal to the processing unit 225, so that the processing unit 225 is high according to the state of receiving the first signal Potential, and know that the first to four front-end equipment 201, 202, 203, 204 are still in use, and send the second signal to control the power control switch 224 conduction, so that the power state of the audio-visual control unit 221 is the start state to continue While executing the action, the second signal will also control the power management control unit 26 to turn on, so as to continue to supply AC power to the first to fifth back-end devices 241, 242, 243, 244, 245;

If the detection unit 222 detects that the first to four front-end devices 201, 202, 203, 204 have no audio-visual signal input at this time, the detection unit 222 will immediately send the first signal to the processing unit 225, so that the processing The unit 225 receives the first signal at a low potential, and after knowing that the first to fourth front-end devices 201, 202, 203, and 204 are not in use, it sends a second signal to control the power control switch 224 to be non-conductive, so that The power state of the audio-visual control unit 221 is off and does not perform any action. At the same time, the second signal also controls the power management control unit 26 to turn off the supply to the first to fifth back-end devices 241, 242, 243, 244, 245 AC power supply.

Therefore, through the design of the control system 2 of the present invention, on the one hand, the existing problem of image signal distortion can be improved, and many existing converter components can be omitted during actual production, and on the other hand, energy can be effectively saved. The corresponding control device 22 will also increase the service life of its internal components as the standby time is shortened.

As described above, the present invention has the following advantages compared to existing ones:

1. Excellent energy-saving effect;

2. Cost saving;

3. It has the effect of reducing the loss of components in the control device.

The above are only preferred embodiments of the present invention, but the features of the present invention are not limited thereto, and any changes or modifications that can be easily conceived by those skilled in the art in the field of the present invention should be covered. In the following patent scope of the present invention.

Claims (9)

1. the control system having energy-saving automatic-switching electronic device, it is characterized in that, having the transmission headend equipment of one video-audio signal, control device and an at least one rear end equipment including at least one, this control device is connected respectively this headend equipment and rear end equipment, and this control device comprises:

One audio-visual control unit, has audio-visual distribution and the function of audio-visual selection, and it connects this rear end equipment, and this audio-visual control unit is sent to the rear end equipment of correspondence according to the form receiving described video-audio signal；

At least one detecting unit, connect this audio-visual control unit and this headend equipment respectively, this at least one detecting unit is according to whether detecting has this video-audio signal to input, and produces one first signal, and is supplied directly to this audio-visual control unit by not converted for this video-audio signal received from this headend equipment；

One processing unit, connects this detecting unit and this audio-visual control unit respectively, and this processing unit produces a secondary signal according to the state of this first signal；

One power switch control, it opens and closes the power supply status of this audio-visual control unit according to described secondary signal；And

One standby power, it connects this processing unit and this detecting unit respectively, in order to supply electric power to this processing unit and this detecting unit；

The control system of described tool energy-saving automatic-switching electronic device, more comprise a control interface and connect this processing unit, with for user input instruction to this processing unit, make this processing unit control corresponding rear end equipment according to described input instruction and control audio-visual control unit and carry out audio-visual distribution and audio-visual selection, and described secondary signal more power supply in order to control the rear end equipment of correspondence opens and closes.

2. the as claimed in claim 1 control system having energy-saving automatic-switching electronic device, it is characterised in that this power switch control selects to be located in this processing unit maybe in this control device.

3. the control system having energy-saving automatic-switching electronic device as claimed in claim 2, it is characterised in that this power switch control is located in this processing unit and is formed an integrated circuit.

4. the control system having energy-saving automatic-switching electronic device as claimed in claim 1, it is characterized in that, this processing unit is a central processing unit, it is high potential according to the state of described first signal received, then transmitting this secondary signal and control the conducting of this power switch control, the power supply status making this audio-visual control unit is starting state.

5. the control system having energy-saving automatic-switching electronic device as claimed in claim 1, it is characterized in that, this processing unit is a central processing unit, if the time of the low-potential state of described reception the first signal is more than Preset Time, then this processing unit is judged as inputting without video-audio signal, just transmit this secondary signal to control this power switch control and be not turned on, make the power supply status of this audio-visual control unit be closed mode and not perform action.

6. the control system having energy-saving automatic-switching electronic device as claimed in claim 1, it is characterised in that headend equipment is a voice playing device, an image player, an audio-visual multimedia playing device, a notebook computer or a computer.

7. the control system having energy-saving automatic-switching electronic device as claimed in claim 1, it is characterised in that this rear end equipment is a display, a scialyscope or an illuminator.

8. the control system having energy-saving automatic-switching electronic device as claimed in claim 1, it is characterized in that, the form of this video-audio signal comprises AM broadcast, FM broadcast or other simulating music signal form, NTSC movie news, PAL movie news, SECAM movie news or other simulation movie news form, RGB movie news, MPEG2 movie news, MPEG4 movie news, PCM message, MP3 message, MP4 message, WAV message, AIFF message, AU message, AAC message, AVI movie news, instant media movie news, instant message, Liquid message, DIVX, REAL, QUICTIME, CSSDVD or VCD.

9. the control system having energy-saving automatic-switching electronic device as claimed in claim 1, it is characterized in that, more comprise a power supply management control unit, this power supply management control unit connects this processing unit and this headend equipment and this rear end equipment respectively, in order to manage and to supply power supply to this rear end equipment and this headend equipment, and open and close according to the power supply receiving the rear end equipment that described secondary signal controls correspondence.