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CN112540560B - Automatic control switch device for video conference terminal - Google Patents

Automatic control switch device for video conference terminal Download PDF

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Publication number
CN112540560B
CN112540560B CN202011375586.1A CN202011375586A CN112540560B CN 112540560 B CN112540560 B CN 112540560B CN 202011375586 A CN202011375586 A CN 202011375586A CN 112540560 B CN112540560 B CN 112540560B
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CN
China
Prior art keywords
normally
video conference
power supply
closed contact
contact
Prior art date
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Active
Application number
CN202011375586.1A
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Chinese (zh)
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CN112540560A (en
Inventor
谯兴宇
朱国钢
谯书琴
杨福妮
张涛
蒋伟
冯超
周岐杰
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Dazhou Power Supply Co Of State Grid Sichuan Electric Power Co
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Dazhou Power Supply Co Of State Grid Sichuan Electric Power Co
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Priority to CN202011375586.1A priority Critical patent/CN112540560B/en
Publication of CN112540560A publication Critical patent/CN112540560A/en
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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/04Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0423Input/output
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/14Systems for two-way working
    • H04N7/15Conference systems
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/20Pc systems
    • G05B2219/25Pc structure of the system
    • G05B2219/25257Microcontroller
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

The invention discloses an automatic control switch device for a video conference terminal, relates to the technical field of electronic and electric appliance application, and solves the problem of manpower resource waste caused by the fact that special persons are arranged to manage early-meeting timing switch. The invention comprises an automatic control switch device which is used for automatically starting the power supply of the network video conference terminal within preset time every day and automatically closing the power supply of the terminal after the video conference is finished. According to the invention, the power supply of the network video conference terminal is automatically turned on within the preset time, and the power supply of the network video conference terminal is automatically turned off after the conference is finished, so that the manpower resources are saved.

Description

Automatic control switch device for video conference terminal
Technical Field
The invention relates to the technical field of electronic appliance application, in particular to an automatic control switch device of a video conference terminal.
Background
Modern offices are increasingly popular, more and more enterprises and public institutions adopt a network video conference system to conduct remote conferences, and particularly, some large-scale units conduct early meetings in the morning every day, and the recent work of the units is distributed, so that the office efficiency is improved. However, in order to timely switch, special persons are arranged to manage the switch, and human resources are wasted.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: in order to timely switch in an early meeting and arrange special persons to manage and waste human resources, the invention provides an automatic control switch device for a video conference terminal, which solves the problems.
The invention is realized by the following technical scheme:
the automatic control switch device of the video conference terminal automatically turns on the power supply of the network video conference terminal within preset time every day, and automatically turns off the power supply of the terminal after the video conference is finished; when a network video conference is temporarily held, manually starting a video conference terminal power supply, and after the video conference is finished, manually closing or automatically closing the video conference terminal power supply; when a network video conference is temporarily held, starting a video conference terminal power supply by using mobile phone APP software, and closing the video conference terminal power supply by using the mobile phone APP software after the video conference is finished; when no video conference exists on the double holidays or the holidays, the automatic control switch device automatically turns on the power supply of the network video conference terminal and then automatically turns off the power supply of the video conference terminal in a preset time.
Further, the intelligent control device comprises a microcomputer time control switch timer ST, an intermediate relay KM, an electrifying delay relay KT, an audio sound control switch module YP, a transfer switch ZK, a mobile phone APP remote control module YD, an AC220V/DC5V power module DY, a start button QA, a stop button TA, an external plug CT0 and an external socket CZ;
the phase line L is sequentially connected with a power connection terminal of the microcomputer time control switch timer ST and then reaches a zero line N;
the phase line L is sequentially connected with a normally closed contact of the change-over switch ZK and the AC220V/DC5V power module DY and then reaches the zero line N;
the phase line L is sequentially connected with a normally closed contact of the change-over switch ZK, a stop button TA, a start button QA, a working coil of the intermediate relay KM and a normally closed contact KT-1 of the electrified delay relay KT to a zero line N;
the positive electrode of the 5V output power supply of the AC220V/DC5V power supply module DY is sequentially connected with the positive electrode of the 5V of the audio sound control switch module YP, the negative electrode of the 5V output power supply of the audio sound control switch module YP and the negative electrode of the 5V output power supply of the AC220V/DC5V power supply module DY;
the positive electrode of the 5V output power supply of the AC220V/DC5V power supply module DY is sequentially connected with the positive electrode of the 5V of the mobile phone remote control module YD, the negative electrode of the 5V output power supply of the AC220V/DC5V power supply module DY;
the phase line L is sequentially connected with a normally closed contact of a change-over switch ZK and a stop button TA, a normally open contact KM-2 of an intermediate relay KM, a working coil of the intermediate relay KM and a zero line N after the normally closed contact KT-1 of the relay KT is electrified;
the phase line L is sequentially connected with a normally closed contact of a change-over switch ZK, a stop button TA, a normally closed contact KM-1 of an intermediate relay KM, a normally open contact ST-2 of a microcomputer time-controlled switch timer ST, a working coil of the intermediate relay KM and a normally closed contact KT-1 of an electrifying delay relay KT and then to a zero line N;
the phase line L is sequentially connected with a normally-closed contact of the change-over switch ZK and a stop button TA, a normally-open contact YD-2 of the remote control module YD, a working coil of the intermediate relay KM and a normally-closed contact KT-1 of the power-on delay relay KT and then the normally-closed contact is connected to a zero line N;
the phase line L is sequentially connected with a normally-closed contact of the change-over switch ZK, a stop button TA, a normally-open contact KM-2 of the intermediate relay KM, a normally-closed contact YP-1 of the audio frequency sound control switch module YP, and the working coil of the delay relay KT is electrified to reach a zero line N;
the phase line L is sequentially connected with a normally-closed contact of the change-over switch ZK, a stop button TA, a normally-open contact KM-2 of the intermediate relay KM, a normally-open contact YP-2 of the audio sound control switch module YP, and the audio sound control switch module outputs a signal indicator lamp HL to a zero line N;
the phase line L is sequentially connected with a normally closed contact of the change-over switch ZK and a stop button TA, and a normally open contact KM-4 of the intermediate relay KM and a 220V signal indicator lamp HD are connected to a zero line N;
the phase line L is sequentially connected with a normally closed contact of a change-over switch ZK and a stop button TA, and a normally open contact KM-4 of an intermediate relay KM and a 220V power socket wiring terminal are connected to a zero line N;
the phase line L is sequentially connected with a normally open contact of the change-over switch ZK and the 220V signal indicator lamp HD and then reaches the zero line N;
the phase line L is sequentially connected with a normally open contact of the change-over switch ZK and a 220V power socket wiring terminal and then reaches a zero line N;
the phase line L is sequentially connected with a normally closed contact of a change-over switch ZK and a stop button TA, and a normally open contact KM-4 of an intermediate relay KM and a 220V power socket wiring terminal are connected to a zero line N;
when the audio frequency sound control switch module YP detects that an audio frequency signal is input to a video conference terminal, an audio frequency sound control switch module YP contact normally closed contact YP-1 is switched to an open position, a working coil of an electrifying delay relay KT is in power failure and is not in work, a phase line L is sequentially connected with a stop button TA, a closed contact KM-2 of an intermediate relay KM, a working coil of the intermediate relay KM, a normally closed contact KT-1 of the electrifying delay relay KT is connected to a zero line N after the working coil of the intermediate relay KM, so that the working coil of the intermediate relay KM continuously works, when a network video conference is finished or a holiday does not have the video conference, the audio frequency sound control switch module YP is restored to the YP-1 at a normally closed position, the phase line L is sequentially connected with the stop button TA, the closed contact KM-2 of the intermediate relay KM is connected to the zero line N after the working coil of the electrifying delay relay KT, the normally closed contact YD is switched to the zero line N after the electrifying delay relay KT reaches the set electrifying delay time, and the normally closed contact KT-1 is switched to the normally open state of the video conference terminal, and the audio frequency sound control switch module YP is switched to the normally closed state;
after an external plug CT0 is inserted into a 220V universal power socket, an automatic control switch of a video conference terminal is electrified, a mobile phone APP is remotely pressed to open the switch, a mobile phone remote control contact YD-2 is normally opened and closed, a power phase line L sequentially passes through a stop button TA, the mobile phone remote control contact normally opened YD-2, a working coil of an intermediate relay KM, a normally closed contact KT-1 of a normally closed time delay relay KT of the mobile phone remote control contact normally closed YD-3, and then the intermediate relay KM is electrified to work, normally opened contacts KM-2 and KM-4 of the intermediate relay KM are closed, after the mobile phone remote control contact normally opened YD-2 is reset, the power phase line L sequentially passes through the stop button TA, a closed contact KM-2 of the intermediate relay KM and a working coil of the intermediate relay KM, and then the normally closed contact KT-1 of the time delay relay KT is electrified to the zero line N, so that the working coil of the intermediate relay KM works.
Further, the working voltage of the audio sound control switch module YP and the mobile phone APP remote control module YD is 5V or 12V, and a pair of normally closed contacts YP-1 and normally open contacts YP-2, and a pair of normally closed contacts YD-1 and normally open contacts YD-2 are provided for an external control loop.
Further, the audio sound control switch module is used for detecting audio signals and starting a relay; the audio frequency disappears and exceeds the set delay time, the relay is disconnected, and the range of the delay time is: 0.1 seconds to 99.9 seconds.
Further, the microcomputer time control switch timer ST is also included to set one or more groups of on and off time, and the time interval between the on and off time is in the range of 0-60 s.
For convenience of use, the electronic device is integrated in the plastic housing, an external plug CT0, an external socket CZ and audio input signal wires are led out from the plastic housing, and a start button QA operation part, a stop button TA operation part, signal lamps HD and YD signal display part are arranged on the same surface of the plastic housing.
The invention has the following advantages and beneficial effects:
the invention can automatically turn on the power supply of the network video conference terminal in the preset time, and automatically turn off the power supply of the network video conference terminal after the conference is finished, thereby saving human resources.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention. In the drawings:
FIG. 1 is a schematic diagram of the principle module of the present invention.
Fig. 2 is a wiring diagram of an audio sound control switch module of the present invention.
Fig. 3 is an external schematic diagram of the automatic control switch of the video conference terminal according to the present invention.
Fig. 4 is a schematic diagram of a remote control module of a video phone according to the present invention.
Detailed Description
Hereinafter, the terms "comprises" or "comprising" as may be used in various embodiments of the present invention indicate the presence of inventive functions, operations or elements, and are not limiting of the addition of one or more functions, operations or elements. Furthermore, as used in various embodiments of the invention, the terms "comprises," "comprising," and their cognate terms are intended to refer to a particular feature, number, step, operation, element, component, or combination of the foregoing, and should not be interpreted as first excluding the existence of or increasing likelihood of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing.
In various embodiments of the invention, the expression "or" at least one of a or/and B "includes any or all combinations of the words listed simultaneously. For example, the expression "a or B" or "at least one of a or/and B" may include a, may include B or may include both a and B.
Expressions (such as "first", "second", etc.) used in the various embodiments of the invention may modify various constituent elements in the various embodiments, but the respective constituent elements may not be limited. For example, the above description does not limit the order and/or importance of the elements. The above description is only intended to distinguish one element from another element. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of various embodiments of the present invention.
It should be noted that: if it is described to "connect" one component element to another component element, a first component element may be directly connected to a second component element, and a third component element may be "connected" between the first and second component elements. Conversely, when one constituent element is "directly connected" to another constituent element, it is understood that there is no third constituent element between the first constituent element and the second constituent element.
The terminology used in the various embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the various embodiments of the invention. As used herein, the singular is intended to include the plural as well, unless the context clearly indicates otherwise. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the invention belong. The terms (such as those defined in commonly used dictionaries) will be interpreted as having a meaning that is the same as the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in connection with the various embodiments of the invention.
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present invention and the descriptions thereof are for illustrating the present invention only and are not to be construed as limiting the present invention.
As shown in fig. 1-4, the video conference terminal automatically controls the switching device to automatically turn on the power supply of the network video conference terminal within a preset time every day, and to automatically turn off the power supply of the terminal after the video conference is finished; when a network video conference is temporarily held, manually starting a video conference terminal power supply, and after the video conference is finished, manually closing or automatically closing the video conference terminal power supply; when a network video conference is temporarily held, starting a video conference terminal power supply by using mobile phone APP software, and closing the video conference terminal power supply by using the mobile phone APP software after the video conference is finished; when no video conference exists on the double holidays or the holidays, the automatic control switch device automatically turns on the power supply of the network video conference terminal and then automatically turns off the power supply of the video conference terminal in a preset time.
Further, the intelligent control device comprises a microcomputer time control switch timer ST, an intermediate relay KM, an electrifying delay relay KT, an audio sound control switch module YP, a transfer switch ZK, a mobile phone APP remote control module YD, an AC220V/DC5V power module DY, a start button QA, a stop button TA, an external plug CT0 and an external socket CZ;
the phase line L is sequentially connected with a power connection terminal of the microcomputer time control switch timer ST and then reaches a zero line N;
the phase line L is sequentially connected with a normally closed contact of the change-over switch ZK and the AC220V/DC5V power module DY and then reaches the zero line N;
the phase line L is sequentially connected with a normally closed contact of the change-over switch ZK, a stop button TA, a start button QA, a working coil of the intermediate relay KM and a normally closed contact KT-1 of the electrified delay relay KT to a zero line N;
the positive electrode of the 5V output power supply of the AC220V/DC5V power supply module DY is sequentially connected with the positive electrode of the 5V of the audio sound control switch module YP, the negative electrode of the 5V output power supply of the audio sound control switch module YP and the negative electrode of the 5V output power supply of the AC220V/DC5V power supply module DY;
the positive electrode of the 5V output power supply of the AC220V/DC5V power supply module DY is sequentially connected with the positive electrode of the 5V of the mobile phone remote control module YD, the negative electrode of the 5V output power supply of the AC220V/DC5V power supply module DY;
the phase line L is sequentially connected with a normally closed contact of a change-over switch ZK and a stop button TA, a normally open contact KM-2 of an intermediate relay KM, a working coil of the intermediate relay KM and a zero line N after the normally closed contact KT-1 of the relay KT is electrified;
the phase line L is sequentially connected with a normally closed contact of a change-over switch ZK, a stop button TA, a normally closed contact KM-1 of an intermediate relay KM, a normally open contact ST-2 of a microcomputer time-controlled switch timer ST, a working coil of the intermediate relay KM and a normally closed contact KT-1 of an electrifying delay relay KT and then to a zero line N;
the phase line L is sequentially connected with a normally-closed contact of the change-over switch ZK and a stop button TA, a normally-open contact YD-2 of the remote control module YD, a working coil of the intermediate relay KM and a normally-closed contact KT-1 of the power-on delay relay KT and then the normally-closed contact is connected to a zero line N;
the phase line L is sequentially connected with a normally-closed contact of the change-over switch ZK, a stop button TA, a normally-open contact KM-2 of the intermediate relay KM, a normally-closed contact YP-1 of the audio frequency sound control switch module YP, and the working coil of the delay relay KT is electrified to reach a zero line N;
the phase line L is sequentially connected with a normally-closed contact of the change-over switch ZK, a stop button TA, a normally-open contact KM-2 of the intermediate relay KM, a normally-open contact YP-2 of the audio sound control switch module YP, and the audio sound control switch module outputs a signal indicator lamp HL to a zero line N;
the phase line L is sequentially connected with a normally closed contact of the change-over switch ZK and a stop button TA, and a normally open contact KM-4 of the intermediate relay KM and a 220V signal indicator lamp HD are connected to a zero line N;
the phase line L is sequentially connected with a normally closed contact of a change-over switch ZK and a stop button TA, and a normally open contact KM-4 of an intermediate relay KM and a 220V power socket wiring terminal are connected to a zero line N;
the phase line L is sequentially connected with a normally open contact of the change-over switch ZK and the 220V signal indicator lamp HD and then reaches the zero line N;
the phase line L is sequentially connected with a normally open contact of the change-over switch ZK and a 220V power socket wiring terminal and then reaches a zero line N;
the phase line L is sequentially connected with a normally closed contact of a change-over switch ZK and a stop button TA, and a normally open contact KM-4 of an intermediate relay KM and a 220V power socket wiring terminal are connected to a zero line N;
when the audio frequency sound control switch module YP detects that an audio frequency signal is input to a video conference terminal, an audio frequency sound control switch module YP contact normally closed contact YP-1 is switched to an open position, a working coil of an electrifying delay relay KT is in power failure and is not in work, a phase line L is sequentially connected with a stop button TA, a closed contact KM-2 of an intermediate relay KM, a working coil of the intermediate relay KM, a normally closed contact KT-1 of the electrifying delay relay KT is connected to a zero line N after the working coil of the intermediate relay KM, so that the working coil of the intermediate relay KM continuously works, when a network video conference is finished or a holiday does not have the video conference, the audio frequency sound control switch module YP is restored to the YP-1 at a normally closed position, the phase line L is sequentially connected with the stop button TA, the closed contact KM-2 of the intermediate relay KM is connected to the zero line N after the working coil of the electrifying delay relay KT, the normally closed contact YD is switched to the zero line N after the electrifying delay relay KT reaches the set electrifying delay time, and the normally closed contact KT-1 is switched to the normally open state of the video conference terminal, and the audio frequency sound control switch module YP is switched to the normally closed state;
after an external plug CT0 is inserted into a 220V universal power socket, an automatic control switch of a video conference terminal is electrified, a mobile phone APP is remotely pressed to open the switch, a mobile phone remote control contact YD-2 is normally opened and closed, a power phase line L sequentially passes through a stop button TA, the mobile phone remote control contact normally opened YD-2, a working coil of an intermediate relay KM, a normally closed contact KT-1 of a normally closed time delay relay KT of the mobile phone remote control contact normally closed YD-3, and then the intermediate relay KM is electrified to work, normally opened contacts KM-2 and KM-4 of the intermediate relay KM are closed, after the mobile phone remote control contact normally opened YD-2 is reset, the power phase line L sequentially passes through the stop button TA, a closed contact KM-2 of the intermediate relay KM and a working coil of the intermediate relay KM, and then the normally closed contact KT-1 of the time delay relay KT is electrified to the zero line N, so that the working coil of the intermediate relay KM works.
Further, the working voltage of the audio sound control switch module YP and the mobile phone APP remote control module YD is 5V or 12V, and a pair of normally closed contacts YP-1 and normally open contacts YP-2, and a pair of normally closed contacts YD-1 and normally open contacts YD-2 are provided for an external control loop.
Further, the audio sound control switch module is used for detecting audio signals and starting a relay; the audio frequency disappears and exceeds the set delay time, the relay is disconnected, and the range of the delay time is: 0.1 seconds to 99.9 seconds.
Further, the microcomputer time control switch timer ST is also included to set one or more groups of on and off time, and the time interval between the on and off time is in the range of 0-60 s.
For convenience of use, the electronic device is integrated in the plastic housing, an external plug CT0, an external socket CZ and audio input signal wires are led out from the plastic housing, and a start button QA operation part, a stop button TA operation part, signal lamps HD and YD signal display part are arranged on the same surface of the plastic housing.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims (4)

1. The automatic control switch device for the video conference terminal is characterized in that:
the automatic control switch device is used for automatically starting the power supply of the network video conference terminal within preset time every day, and automatically closing the power supply of the terminal after the video conference is finished;
the method is used for manually starting the power supply of the video conference terminal when the network video conference is temporarily held, and the power supply of the video conference terminal can be manually closed or automatically closed after the video conference is finished;
the method comprises the steps that when a network video conference is temporarily held, a video conference terminal power supply is started by mobile phone APP software, and after the video conference is finished, the video conference terminal power supply is closed by the mobile phone APP software;
when no video conference exists on the double rest days or the holidays, the automatic control switch device automatically turns off the video conference terminal power supply within a preset time after automatically turning on the network video conference terminal power supply;
the intelligent control system comprises a microcomputer time control switch timer ST, an intermediate relay KM, an electrifying delay relay KT, an audio sound control switch module YP, a change-over switch ZK, a mobile phone APP remote control module YD, an AC220V/DC5V power module DY, a start button QA, a stop button TA, an external plug CT0 and an external socket CZ;
the phase line L is sequentially connected with a power connection terminal of the microcomputer time control switch timer ST and then reaches a zero line N;
the phase line L is sequentially connected with a normally closed contact of the change-over switch ZK and the AC220V/DC5V power module DY and then reaches the zero line N;
the phase line L is sequentially connected with a normally closed contact of the change-over switch ZK, a stop button TA, a start button QA, a working coil of the intermediate relay KM and a normally closed contact KT-1 of the electrified delay relay KT to a zero line N;
the positive electrode of the 5V output power supply of the AC220V/DC5V power supply module DY is sequentially connected with the positive electrode of the 5V of the audio sound control switch module YP, the negative electrode of the 5V output power supply of the audio sound control switch module YP and the negative electrode of the 5V output power supply of the AC220V/DC5V power supply module DY;
the positive electrode of the 5V output power supply of the AC220V/DC5V power supply module DY is sequentially connected with the positive electrode of the 5V of the mobile phone remote control module YD, the negative electrode of the 5V output power supply of the AC220V/DC5V power supply module DY;
the phase line L is sequentially connected with a normally closed contact of a change-over switch ZK and a stop button TA, a normally open contact KM-2 of an intermediate relay KM, a working coil of the intermediate relay KM and a zero line N after the normally closed contact KT-1 of the relay KT is electrified;
the phase line L is sequentially connected with a normally closed contact of a change-over switch ZK, a stop button TA, a normally closed contact KM-1 of an intermediate relay KM, a normally open contact ST-2 of a microcomputer time-controlled switch timer ST, a working coil of the intermediate relay KM and a normally closed contact KT-1 of an electrifying delay relay KT and then to a zero line N;
the phase line L is sequentially connected with a normally-closed contact of the change-over switch ZK and a stop button TA, a normally-open contact YD-2 of the remote control module YD, a working coil of the intermediate relay KM and a normally-closed contact KT-1 of the power-on delay relay KT and then the normally-closed contact is connected to a zero line N;
the phase line L is sequentially connected with a normally-closed contact of the change-over switch ZK, a stop button TA, a normally-open contact KM-2 of the intermediate relay KM, a normally-closed contact YP-1 of the audio frequency sound control switch module YP, and the working coil of the delay relay KT is electrified to reach a zero line N;
the phase line L is sequentially connected with a normally-closed contact of the change-over switch ZK, a stop button TA, a normally-open contact KM-2 of the intermediate relay KM, a normally-open contact YP-2 of the audio sound control switch module YP, and the audio sound control switch module outputs a signal indicator lamp HL to a zero line N;
the phase line L is sequentially connected with a normally closed contact of the change-over switch ZK and a stop button TA, and a normally open contact KM-4 of the intermediate relay KM and a 220V signal indicator lamp HD are connected to a zero line N;
the phase line L is sequentially connected with a normally closed contact of a change-over switch ZK and a stop button TA, and a normally open contact KM-4 of an intermediate relay KM and a 220V power socket wiring terminal are connected to a zero line N;
the phase line L is sequentially connected with a normally open contact of the change-over switch ZK and the 220V signal indicator lamp HD and then reaches the zero line N;
the phase line L is sequentially connected with a normally open contact of the change-over switch ZK and a 220V power socket wiring terminal and then reaches a zero line N;
when the audio frequency sound control switch module YP detects that an audio frequency signal is input to a video conference terminal, an audio frequency sound control switch module YP contact normally closed contact YP-1 is switched to an open position, a working coil of an electrifying delay relay KT is in power failure and is not in work, a phase line L is sequentially connected with a stop button TA, a closed contact KM-2 of an intermediate relay KM, a working coil of the intermediate relay KM, a normally closed contact KT-1 of the electrifying delay relay KT is connected to a zero line N after the working coil of the intermediate relay KM, so that the working coil of the intermediate relay KM continuously works, when a network video conference is finished or a holiday does not have the video conference, the audio frequency sound control switch module YP is restored to the YP-1 at a normally closed position, the phase line L is sequentially connected with the stop button TA, the closed contact KM-2 of the intermediate relay KM is connected to the zero line N after the working coil of the electrifying delay relay KT, the normally closed contact YD is switched to the zero line N after the electrifying delay relay KT reaches the set electrifying delay time, and the normally closed contact KT-1 is switched to the normally open state of the video conference terminal, and the audio frequency sound control switch module YP is switched to the normally closed state;
after an external plug CT0 is inserted into a 220V universal power socket, an automatic control switch of a video conference terminal is electrified, a mobile phone APP is remotely pressed to open the switch, a mobile phone remote control contact YD-2 is normally opened and closed, a power phase line L sequentially passes through a stop button TA, the mobile phone remote control contact normally opened YD-2, a working coil of an intermediate relay KM, a normally closed contact KT-1 of a normally closed time delay relay KT of the mobile phone remote control contact normally closed YD-3, and then the intermediate relay KM is electrified to work, normally opened contacts KM-2 and KM-4 of the intermediate relay KM are closed, after the mobile phone remote control contact normally opened YD-2 is reset, the power phase line L sequentially passes through the stop button TA, a closed contact KM-2 of the intermediate relay KM and a working coil of the intermediate relay KM, and then the normally closed contact KT-1 of the time delay relay KT is electrified to the zero line N, so that the working coil of the intermediate relay KM works.
2. The video conference terminal automatic control switching device according to claim 1, wherein: the working voltage of the audio sound control switch module YP and the mobile phone APP remote control module YD is 5V or 12V, and a pair of normally closed contacts YP-1 and normally open contacts YP-2, and a pair of normally closed contacts YD-1 and normally open contacts YD-2 are provided for an external control loop.
3. The video conference terminal automatic control switching device according to claim 1, wherein: the audio sound control switch module is used for detecting audio signals and starting a relay; the audio frequency disappears and exceeds the set delay time, the relay is disconnected, and the range of the delay time is: 0.1 seconds to 99.9 seconds.
4. The video conference terminal automatic control switching device according to claim 1, wherein: the microcomputer time control switch timer ST is also included to set one or more groups of on and off time, and the time interval between the on and off time is within the range of 0-60 s.
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