CN115665637B - Public address telephone, public address telephone system and control method - Google Patents
Public address telephone, public address telephone system and control method Download PDFInfo
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- CN115665637B CN115665637B CN202211670511.5A CN202211670511A CN115665637B CN 115665637 B CN115665637 B CN 115665637B CN 202211670511 A CN202211670511 A CN 202211670511A CN 115665637 B CN115665637 B CN 115665637B
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- Y—GENERAL 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
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The invention discloses a sound amplifying telephone, a sound amplifying telephone system and a control method. The speakerphone includes: a functional circuit in which a power switch is provided; the controller is connected with the functional circuit and/or the power switch; the controller is used for controlling the working mode of the functional circuit; the wake-up circuit is connected with the controller at one end, and the other end of the wake-up circuit is connected to other public address telephones through a wake-up data line; the wake-up circuit is used for transmitting a wake-up signal on a wake-up data line to the controller; and/or the wake-up circuit is used for receiving a wake-up signal sent by the controller and transmitting the wake-up signal to the wake-up data line. The embodiment can reduce the power consumption of the amplified phone and ensure that the amplified phone can be used for a long time no matter being powered by underground power generation equipment or by batteries.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a voice amplifying telephone, a voice amplifying telephone system, and a control method.
Background
In the production of coal mines, in order to improve the production management level and the production efficiency and ensure the life safety of workers, mining public address telephones are widely used as one of the indispensable devices in the coal mines. For the special underground environment, the communication mode used by most of the current public address telephones is CAN communication, the rate of the CAN communication is between 5Kbps and 1000Kbps, and for the underground communication scene requiring long distance, the communication rate of the CAN is lower. In order to complete voice transmission at such a rate, it is necessary to compress voice data and lose a part of sound quality, and even this can only satisfy unidirectional voice data transmission, but this cannot be achieved in the case of a high communication rate such as a bidirectional call.
In the prior art, the communication mode used by the public address telephone is Ethernet communication, and compared with CAN communication, the Ethernet communication speed CAN reach 10 Mbps or 100 Mbps or even higher, thereby meeting the requirements of two-way communication and improving the tone quality. However, due to the special underground environment, related personnel are required to overhaul the underground power generation equipment for one time at intervals, when the equipment is overhauled, part of the equipment is required to be powered off, and after the equipment is powered off, the amplified telephone is required to be powered by an internal battery so as to ensure normal use.
However, the ethernet physical layer transceiver of a speakerphone using ethernet communications has a high power consumption, and the use of the speakerphone is greatly reduced when powered by a battery.
Disclosure of Invention
The invention provides a public address telephone, a public address telephone system and a control method, which are used for solving the problems of higher power consumption and shorter service time when a battery is used for supplying power to the public address telephone of Ethernet communication.
According to an aspect of the present invention, there is provided a speakerphone comprising:
a functional circuit in which a power switch is provided;
the controller is connected with the functional circuit and/or the power switch; the controller is used for controlling the working mode of the functional circuit;
the wake-up circuit is connected with the controller at one end, and the other end of the wake-up circuit is connected to other public address telephones through a wake-up data line; the wake-up circuit is used for transmitting a wake-up signal on a wake-up data line to the controller so that the controller wakes up the voice amplifying telephone; and/or the wake-up circuit is used for receiving a wake-up signal sent by the controller and transmitting the wake-up signal to the wake-up data line.
Optionally, the wake-up circuit comprises:
the input end of the wake-up input module is connected with the wake-up data line, the output end of the wake-up input module is connected with the controller, and the wake-up input module is used for transmitting a wake-up signal on the wake-up data line to the controller;
the wake-up output module is used for transmitting a wake-up signal of the controller to the wake-up data line.
Optionally, the wake-up input module includes: the first optical coupler, the first resistor and the second resistor; the first light receiving end of the first optical coupler is connected with the controller, and the first light receiving end is connected to a first power supply through the first resistor; the second light receiving end of the first optical coupler is grounded; the first light-emitting end of the first optical coupler is connected to a second power supply through the second resistor, and the second light-emitting end of the first optical coupler is connected to the wake-up data line;
and/or, the wake-up output module comprises: the first light emitting end of the second optical coupler is connected to the first power supply through the third resistor, the second light emitting end of the second optical coupler is connected with the controller, the first light receiving end of the second optical coupler is connected to the awakening data line, and the second light receiving end of the second optical coupler is grounded.
Optionally, the functional circuit includes: a communication circuit; the communication circuit comprises a communication chip, a first port and a second port;
the power switch supplies power to the communication chip, the first port and the second port are respectively connected to other public address telephones, the control end of the communication chip is connected with the controller, the first communication end of the communication chip is connected with the first port, the second communication end of the communication chip is connected with the second port, the power end of the communication chip is connected with the power switch, and the power switch is controlled by the controller.
Optionally, the communication circuit further includes: the direct-connection communication line, the first communication change-over switch, the second communication change-over switch, the first switch control circuit and the second switch control circuit;
the first end of the first communication change-over switch is connected with the first port, the second end of the first communication change-over switch is connected with the direct-connection communication line, and the third end of the first communication change-over switch is connected with the communication lines of other public address telephones; the first switch control circuit is connected between the controller and the first communication change-over switch, and is used for controlling communication lines of other voice amplifying phones to communicate with the first port or communicate with the direct communication line;
the first end of the second communication change-over switch is connected with the second port, the second end of the second communication change-over switch is connected with the direct-connection communication line, and the third end of the second communication change-over switch is connected with the communication lines of other public address telephones; the second switch control circuit is connected between the controller and the second communication change-over switch, and is used for controlling other communication lines of the public address telephone to communicate with the second port or communicate with the direct-connection communication line.
Optionally, the communication line is a twisted pair.
Optionally, the communication protocol of the communication circuit is 10BASE-T1L.
According to another aspect of the present invention, there is provided a public address telephone system comprising: a plurality of speakerphones according to any of the above embodiments, wherein each speakerphone is capable of communicating with each other and is connected by the wake-up data line.
According to another aspect of the present invention, there is provided a control method for a speakerphone applied to a transmitting end of a wake-up signal, the control method including:
a controller of the voice amplifying telephone receives a wake-up signal;
the controller sends a wake-up signal to a wake-up circuit of the current voice amplifying telephone;
the wake-up circuit sends the wake-up signal to other voice amplifying telephones through the wake-up data line;
and the controller controls the power switch of the functional circuit of the voice amplifying telephone to be turned on and enter a working mode.
Optionally, the control method includes a control method applied to a receiving end of the wake-up signal, and the control method includes:
the wake-up circuit of the voice amplifying telephone receives a wake-up signal through the wake-up data line;
the wake-up circuit sends the wake-up signal to a controller of the current public address telephone;
the controller responds to the wake-up signal to enter a working mode and controls the power switch of the functional circuit of the voice amplifying telephone to be turned on.
The embodiment of the invention can control the power switch of the functional circuit to be turned off through the controller, the functional circuit is powered down, and the voice amplifying telephone enters a low-power consumption mode. When the voice amplifying telephone needs to be used, the voice amplifying telephone is awakened, the controller controls the power switch of the functional circuit to be conducted, the functional circuit is electrified, and the voice amplifying telephone enters a working mode. The setting of this embodiment can avoid each public address telephone to be in under the mode all the time to avoid the too high problem of public address telephone power consumption, consequently, can reduce the power consumption of public address telephone under the prerequisite of guaranteeing the normal use of public address telephone, guarantee that public address telephone is no matter rely on underground power generation equipment power supply, still rely on battery powered condition under, can both use for a long time. It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a voice amplifying telephone according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another voice amplifying telephone according to an embodiment of the present invention;
FIG. 3 is a schematic circuit diagram of a wake-up circuit provided by an embodiment of the present invention;
fig. 4 is a schematic structural diagram of yet another voice amplifying telephone according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a communication circuit provided by an embodiment of the present invention;
FIG. 6 is a schematic diagram of a voice-over-amplified phone communication according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of another voice-over-phone communication trend provided by an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a voice amplifying telephone system according to an embodiment of the present invention;
fig. 9 is a flowchart of a method for controlling a voice amplifying telephone according to an embodiment of the present invention;
fig. 10 is a flowchart of another method for controlling a voice amplifying telephone according to an embodiment of the present invention.
Description of the embodiments
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 1 is a schematic structural diagram of a voice amplifying telephone according to an embodiment of the present invention. Referring to fig. 1, the speakerphone includes:
a functional circuit 100, wherein a power switch 110 is provided in the functional circuit 100;
the controller 200, the controller 200 is connected with the power switch 110; the controller 200 is used for controlling the operation mode of the functional circuit 100;
the wake-up circuit 300, one end of the wake-up circuit 300 is connected with the controller 200, and the other end of the wake-up circuit 300 is connected to other public address telephones through the wake-up data line 400; the wake-up circuit 300 is configured to transmit a wake-up signal on a wake-up data line to the controller 200, so that the controller 200 wakes up the speakerphone; and/or, the wake-up circuit 300 is configured to receive a wake-up signal sent by the controller 200, and transmit the wake-up signal to the wake-up data line 400.
The power switch 110 is a switch between the functional circuit 100 and a power supply (not shown in fig. 1), and when the power switch 110 is turned off, the functional circuit 100 is turned off, so that the power switch 110 can control the functional circuit 100 to be turned on or off. Specifically, the functional circuit 100 may be, for example, a microphone recording circuit, a power amplifier circuit, a battery charging circuit, and the like.
The operation principle of the speakerphone for realizing low power consumption is that the controller 200 sends a power-off instruction to the functional circuit 100 when no one uses the speakerphone for a preset time. At this time, the functional circuit 100 enters an off state due to power outage, and the controller 200 enters a low power mode, i.e., the speakerphone enters a low power mode. The preset time is preset time and can be set according to actual use requirements.
Illustratively, a key, which may be a talk key, is also connected to the controller 200 of the speakerphone. When the voice-amplified phone is in the low power mode, the user presses the key, the controller 200 changes from the low power mode to the working mode, a conducting instruction is sent to the functional circuit 100, and the power switch 110 conducts the power of the functional circuit 100. At this time, the speakerphone is switched from the low power mode to the operation mode. It will be appreciated that in actual use the speakerphone is required to transmit call information to another speakerphone, so there are at least two speakerphones in actual use. The controller 200 sends a turn-on instruction to the function circuit 100, and at the same time, the controller 200 also sends a wake-up signal to the wake-up circuit 300, which is transmitted to other speakerphones through the wake-up data line 400. The wake-up signal may be a level signal, for example. The wake-up circuit 300 of the other speakerphone receives the wake-up signal and transmits the wake-up signal to the corresponding controller 200, thereby enabling wake-up of the other speakerphone.
It should be noted that, in use, the speakerphone is first woken up. After awakening, the amplified phone receives the call information and analyzes and plays the call. When the speakerphone is used as an initial speakerphone (a speakerphone recording call information), the speakerphone can wake up while recording call information and send wake-up signals to other speakerphones.
The embodiment of the invention can control the power switch 110 of the functional circuit 100 to be turned off through the controller 200, the functional circuit 100 is powered down, and the voice amplifying telephone enters a low power consumption mode. When the voice amplifying telephone needs to be used, the voice amplifying telephone is awakened, the controller 200 controls the power switch 110 of the functional circuit 100 to be conducted, the functional circuit is electrified, and the voice amplifying telephone enters the working mode. The setting of this embodiment can avoid each public address telephone to be in under the mode all the time to avoid the too high problem of public address telephone power consumption, consequently, can reduce the power consumption of public address telephone under the prerequisite of guaranteeing the normal use of public address telephone, guarantee that public address telephone is no matter rely on underground power generation equipment power supply, still rely on battery powered condition under, can both use for a long time.
Fig. 2 is a schematic structural diagram of another voice amplifying telephone according to an embodiment of the present invention. Optionally, referring to fig. 2, on the basis of the above embodiment, the wake-up circuit 300 includes:
the wake-up input module 310, wherein an input end of the wake-up input module 310 is connected with a wake-up data line, an output end of the wake-up input module 310 is connected with the controller 200, and the wake-up input module 310 is used for transmitting a wake-up signal on the wake-up data line to the controller 200;
the wake-up output module 320, the input end of the wake-up output module 320 is connected to the controller 200, the output end of the wake-up output module 320 is connected to the wake-up data line 400, and the wake-up output module 320 is configured to transmit a wake-up signal of the controller 200 to the wake-up data line.
Specifically, when the wake-up input module 310 receives a wake-up signal of the transmission of the wake-up data line 400, the wake-up input module 310 outputs the wake-up signal to the controller 200. The controller 200 controls the power switch 110 of the functional circuit 100 to be turned on according to the wake-up signal, and changes the speakerphone from the low power consumption mode to the operation mode. It should be noted that, when the speakerphone is used as the originating speakerphone (speakerphone for recording call information), the wake-up signal may be generated by a key connected to the controller 200. When the controller 200 of the speakerphone receives the wake-up signal, the controller 200 transmits the wake-up signal to the wake-up output module 320, and the wake-up output module 320 outputs the wake-up signal to other speakerphones through the wake-up data line 400.
Fig. 3 is a schematic circuit diagram of a wake-up circuit according to an embodiment of the present invention. Optionally, referring to fig. 3, on the basis of the above embodiment, the wake-up input module 310 includes: the first optocoupler PC1, the first resistor R1 and the second resistor R2; the first light receiving end of the first optocoupler PC1 is connected to the controller 200, and the first light receiving end is connected to the first power source VCC1 through the first resistor R1; the second light receiving end of the first optocoupler PC1 is grounded; the first light-emitting end of the first optocoupler PC1 is connected to a second power supply VCC2 through a second resistor R2, and the second light-emitting end of the first optocoupler PC1 is connected to a wake-up data line 400;
and/or wake-up output module 320 includes: the first light emitting end of the second optocoupler PC2 is connected to the first power supply VCC1 through the third resistor R3, the second light emitting end of the second optocoupler PC2 is connected with the controller 200, the first light receiving end of the second optocoupler PC2 is connected to the wake-up data line 400, and the second light receiving end of the second optocoupler PC2 is grounded.
Specifically, when the speakerphone is in the low power mode, the level state of the wakeup data line 400 is always in the high level state. When the key is pressed by the initial amplified phone (amplified phone recording call information), the control 200 sets the pin connected to the second optocoupler PC2 to a low level, at this time, the light emitting end of the second optocoupler PC2 is turned on, and the light receiving end of the second optocoupler PC2 is also turned on at the same time, at this time, the level state of the wake-up data line 400 is set to a low level. Since the wake-up data line 400 is at the low level, the light emitting end of the first optocoupler PC1 of the wake-up input module 310 is turned on, and at this time, the light receiving end of the first optocoupler PC1 is also turned on at the same time, and at this time, the level state of the light receiving end of the first optocoupler PC1 is set from the high level to the low level. The controller 200 detects the level change of the wake-up input module 310, and the controller 200 sets a pin connected to the second optocoupler PC2 to a low level, and simultaneously the controller 200 sends a power on command to the functional circuit 100.
Fig. 4 is a schematic structural diagram of another speaker phone according to an embodiment of the present invention. Fig. 5 is a schematic diagram of a communication circuit provided by an embodiment of the present invention. With reference to fig. 4 and 5, the functional circuit 100 includes, on the basis of the above-described embodiment: a communication circuit 120; the communication circuit 120 includes a communication chip 121, a first port DK1, and a second port DK2;
the power switch 110 supplies power to the communication chip 121, the first port DK1 and the second port DK2 are respectively connected to other speakerphones, the control end of the communication chip 121 is connected to the controller 200, the first communication end of the communication chip 121 is connected to the first port DK1, the second communication end of the communication chip 121 is connected to the second port DK2, the power end of the communication chip 121 is connected to the power switch 110, and the power switch 110 is controlled by the controller 200.
Specifically, the communication chip 121 is configured to receive, transmit, and parse call information of the speakerphone. When the originating speakerphone (speakerphone recording the conversation information) completes recording the conversation information, the communication chip 121 sends the conversation information to the other speakerphones through the second port DK 2. The communication chip 121 of the other speakerphone receives the call information through the first port DK1 and parses the call information. At the same time, the communication chip 121 continues to transmit the call information to the outside.
Optionally, referring to fig. 5, on the basis of the above embodiment, the communication circuit 120 further includes: a direct-connection communication line 500, a first communication changeover switch 123, a second communication changeover switch 125, a first switch control circuit 122, and a second switch control circuit 124;
a first end of the first communication switch 123 is connected to the first port DK1, a second end of the first communication switch 123 is connected to the direct communication line 500, and a third end of the first communication switch 123 is connected to communication lines of other speakerphones; the first switch control circuit 122 is connected between the controller 200 and the first communication switch 123, and the first switch control circuit 122 is used for controlling communication lines of other voice amplifying phones to communicate with the first port DK1 or communicate with the direct communication line 500;
the first end of the second communication switch 125 is connected to the second port DK2, the second end of the second communication switch 125 is connected to the direct communication line 500, and the third end of the second communication switch 125 is connected to the communication lines of other speakerphones; the second switch control circuit 124 is connected between the controller 200 and the second communication switch 125, and the second switch control circuit 124 is used for controlling the communication line of other public address phones to communicate with the second port DK2 or to communicate with the direct-connection communication line 500.
Specifically, the controller 200 monitors the operation state of the speakerphone. Fig. 6 is a schematic diagram of a voice amplifying telephone communication trend according to an embodiment of the present invention. Referring to fig. 6, when the speakerphone is not in fault, the first communication switch 123 turns on the connection between the first end of the first communication switch 123 and the third end of the first communication switch 123, and the call information sent by other speakerphones is sent to the first port DK1 through the first communication switch 123; the second communication switch 125 conducts connection between the first end of the second communication switch 125 and the third end of the second communication switch 125, and the call information is sent to other speakerphones through the second communication switch 125.
Fig. 7 is a schematic diagram of another voice-amplified phone communication direction according to an embodiment of the present invention. Referring to fig. 7, when a speakerphone fails, the controller 200 issues a communication switching instruction to the first and second switch control circuits 122 and 124. The first switch control circuit 122 and the second switch control circuit 124 issue operation instructions to the first communication changeover switch 123 and the second communication changeover switch 125, respectively. At this time, the first communication switch 123 is operated, the first communication switch 123 turns on the connection between the second end of the first communication switch 123 and the third end of the first communication switch 123, and the call information of other voice-amplified phones is sent to the second communication switch 125 through the direct-connection communication line 500; the second communication switch 125 operates, the second communication switch 125 turns on the connection between the second end of the second communication switch 125 and the third end of the second communication switch 125, and the call information is sent to other speakerphones through the second communication switch 125.
Optionally, in addition to the foregoing embodiment, the communication line is a twisted pair. The twisted pair has the advantages of convenience in wiring, strong anti-interference performance and low manufacturing cost.
Optionally, based on the above embodiment, the communication protocol of the communication circuit is 10BASE-T1L.
Specifically, the 10BASE-T1L communication protocol is also known as the IEEE 802.3cg standard. The IEEE 802.3cg standard is an ethernet standard based on the IEEE 802.3 working group, which is applied to single twisted pair communication, and the transmission rate can reach 10Mbit/s. The IEEE 802.3cg standard has the characteristics of high transmission rate and long transmission distance, and has low application cost, small size, and easy installation due to the manner of using a single twisted pair wiring.
The embodiment of the invention also provides a sound amplifying telephone system. Fig. 8 is a schematic structural diagram of a public address telephone system according to an embodiment of the present invention. Referring to fig. 8, the speakerphone includes: the speakerphone provided in any of the above embodiments is capable of communicating between speakerphones and is connected by wake-up data line 400. The technical principle and the effect of the public address telephone system provided by the embodiment of the invention are similar to those of the previous embodiments, and are not repeated.
The embodiment of the invention also provides a control method of the public address telephone, which is suitable for the public address telephone provided by any embodiment of the invention. The speakerphone may send or receive low power control signals.
Fig. 9 is a flowchart of a method for controlling a voice amplifying telephone according to an embodiment of the present invention. The control method of the voice amplifying telephone is applied to the sending end of the wake-up signal, and referring to fig. 9, the control method includes:
s110, the controller of the current public address telephone receives a wake-up signal.
The wake-up signal received by the controller may be, for example, a wake-up signal transmitted by another speakerphone received by the controller. The wake-up signal can also be provided by an external switch, and can be set according to the needs in practical application, and the invention is not limited.
S120, the controller sends a wake-up signal to a wake-up circuit of the current public address telephone.
Specifically, the controller receives a wake-up signal and sends the wake-up signal to the wake-up circuit.
S130, the wake-up circuit sends a wake-up signal to other public address telephones through the wake-up data line.
And S140, the controller controls the power switch of the functional circuit of the current public address telephone to be turned on, and the current public address telephone enters a working mode.
Specifically, the controller generates control according to the wake-up signal and sends the control signal to the power switch of the functional circuit, and the power switch conducts the power supply of the functional circuit according to the control signal. At this time, the functional circuit is in a power-on state. The functional circuit enters into an operating state, and then the amplified phone enters into an operating mode.
Fig. 10 is a flowchart of another method for controlling a voice amplifying telephone according to an embodiment of the present invention. Optionally, on the basis of the above embodiment, the control method of the speakerphone is applied to the receiving end of the wake-up signal, referring to fig. 10, the control method includes:
s210, the wake-up circuit of the current public address telephone receives a wake-up signal through a wake-up data line.
S220, the wake-up circuit sends a wake-up signal to a controller of the current public address telephone;
s230, the controller responds to the wake-up signal to enter a working mode, and controls the power switch of the functional circuit of the current public address telephone to be turned on.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (9)
1. A speakerphone comprising:
the power supply switch is arranged in the functional circuit, the power supply switch is conducted to enable the functional circuit to be electrified, and the power supply switch is turned off to enable the functional circuit to be electrified;
the controller is connected with the functional circuit and/or the power switch; the controller is used for controlling the working mode of the functional circuit; the controller controls the power switch to be turned off so that the voice amplifying telephone enters a low power consumption mode;
the wake-up circuit is connected with the controller at one end, and the other end of the wake-up circuit is connected to other public address telephones through a wake-up data line; the wake-up circuit is used for transmitting a wake-up signal on a wake-up data line to the controller so that the controller controls the power switch to be conducted to wake up the voice amplifying telephone; and/or the wake-up circuit is used for receiving the wake-up signal sent by the controller and transmitting the wake-up signal to the wake-up data line so as to wake up other public address telephones;
the wake-up circuit comprises a wake-up input module and a wake-up output module;
the wake-up input module comprises: the first optical coupler, the first resistor and the second resistor; the first light receiving end of the first optical coupler is connected with the controller, and the first light receiving end is connected to a first power supply through the first resistor; the second light receiving end of the first optical coupler is grounded; the first light-emitting end of the first optical coupler is connected to a second power supply through the second resistor, and the second light-emitting end of the first optical coupler is connected to the wake-up data line;
the wake-up output module comprises: the first light emitting end of the second optical coupler is connected to the first power supply through the third resistor, the second light emitting end of the second optical coupler is connected with the controller, the first light receiving end of the second optical coupler is connected to the awakening data line, and the second light receiving end of the second optical coupler is grounded.
2. The speakerphone of claim 1, wherein an input of the wake-up input module is connected to the wake-up data line, an output of the wake-up input module is connected to the controller, and the wake-up input module is configured to transmit a wake-up signal on the wake-up data line to the controller;
the input end of the awakening output module is connected with the controller, the output end of the awakening output module is connected with the awakening data line, and the awakening output module is used for transmitting an awakening signal of the controller to the awakening data line.
3. The speakerphone of claim 1, wherein the functional circuit comprises: a communication circuit; the communication circuit comprises a communication chip, a first port and a second port;
the power switch supplies power to the communication chip, the first port and the second port are respectively connected to other public address telephones, the control end of the communication chip is connected with the controller, the first communication end of the communication chip is connected with the first port, the second communication end of the communication chip is connected with the second port, the power end of the communication chip is connected with the power switch, and the power switch is controlled by the controller.
4. A speakerphone as recited in claim 3, wherein the communication circuit further comprises: the direct-connection communication line, the first communication change-over switch, the second communication change-over switch, the first switch control circuit and the second switch control circuit;
the first end of the first communication change-over switch is connected with the first port, the second end of the first communication change-over switch is connected with the direct-connection communication line, and the third end of the first communication change-over switch is connected with the communication lines of other public address telephones; the first switch control circuit is connected between the controller and the first communication change-over switch, and is used for controlling communication lines of other voice amplifying phones to communicate with the first port or communicate with the direct communication line;
the first end of the second communication change-over switch is connected with the second port, the second end of the second communication change-over switch is connected with the direct-connection communication line, and the third end of the second communication change-over switch is connected with the communication lines of other public address telephones; the second switch control circuit is connected between the controller and the second communication change-over switch, and is used for controlling other communication lines of the public address telephone to communicate with the second port or communicate with the direct-connection communication line.
5. The speakerphone of claim 4, wherein the communication line is a twisted pair.
6. A speakerphone as recited in claim 3, wherein the communication protocol of the communication circuit is 10BASE-T1L.
7. A speakerphone system comprising: a plurality of speakerphones as claimed in any one of claims 1 to 6, each of the speakerphones being capable of communication with each other and being connected by the wake-up data line.
8. A control method of a speakerphone according to any of claims 1-6, applied to the sender of a wake-up signal, the control method comprising:
a controller of the voice amplifying telephone receives a wake-up signal;
the controller sends a wake-up signal to a wake-up circuit of the current voice amplifying telephone;
the wake-up circuit sends the wake-up signal to other voice amplifying telephones through the wake-up data line;
and the controller controls the power switch of the functional circuit of the voice amplifying telephone to be turned on and enter a working mode.
9. A control method of a speakerphone according to any of claims 1-6, applied to a receiving end of a wake-up signal, the control method comprising:
the wake-up circuit of the voice amplifying telephone receives a wake-up signal through the wake-up data line;
the wake-up circuit sends the wake-up signal to a controller of the current public address telephone;
the controller responds to the wake-up signal to enter a working mode and controls the power switch of the functional circuit of the voice amplifying telephone to be turned on.
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