CN115499718A

CN115499718A - Remote voice communication system control method, broadcasting system and elevator intercom system

Info

Publication number: CN115499718A
Application number: CN202211226213.7A
Authority: CN
Inventors: 匡国生; 李国松; 郑宗明; 张俊杰
Original assignee: Shenzhen Lianke Communication Co ltd
Current assignee: Shenzhen Lianke Communication Co ltd
Priority date: 2022-10-09
Filing date: 2022-10-09
Publication date: 2022-12-20

Abstract

The invention has proposed a long-range voice communication system control method, can solve the problem that the voice communication system application scene is single at present, the construction cost is high, the circuit is apt to age, the communication distance is limited, the communication effect is bad, etc., the system includes cloud server, fixed host computer and at least 1 receiver binding with fixed host computer connected through the public network, the fixed host computer and receiver are switched into the cloud server automatically after electrifying; the fixed host can send voice information or initiate a call request to the selected receiver through the cloud server, and the receiver can initiate the call request to the fixed host through the cloud server; the system adopts a double-host mode of a fixed host and a mobile host, and improves the convenience of host management. Based on the control method of the remote voice communication system, the invention further provides a broadcasting system and an elevator intercom system.

Description

Remote voice communication system control method, broadcasting system and elevator intercom system

Technical Field

The invention relates to the technical field of voice communication systems, in particular to a control method of a remote voice communication system, a broadcasting system and an elevator intercom system.

Background

The voice communication system has wide application range and can be applied to various scenes such as handheld interphone, broadcasting, elevator talkback, entrance guard talkback and the like.

Conventional broadcasting system solutions mainly include wired broadcasting transmitted through a wire, and wireless broadcasting transmitted through radio waves. The wire broadcasting is easy to age and damage along with the long-term circuit of the age and affects the beauty of the countryside. The traditional analog frequency modulation wireless broadcast is influenced by factors such as weather environment and the like.

The traditional elevator intercom system solution mainly comprises a guy intercom scheme and an analog frequency modulation intercom scheme. In the stay wire talkback scheme, a five-way talkback function is realized by wiring each elevator to a control room, the wiring cost of the scheme is higher, and higher maintenance cost can be generated along with the aging of a circuit or the damage of a pipeline. In the analog frequency modulation talkback scheme, voice signals of a car phone, a machine room phone, a car top phone and a phone at the bottom of a hoistway are modulated to wireless radio frequency signals in an analog frequency modulation mode and then sent to a receiver to demodulate and restore voice to carry out double-party communication, the analog frequency modulation mode is easily interfered, and a duplexer needs to be additionally arranged, so that the cost is high, and the limitation of transmission distance is easily caused.

Due to the development history problems of various application scenarios, at present, no comprehensive solution applicable to various scenarios exists. In addition, the problems of high construction cost, easy aging of circuits, limited communication distance, poor communication effect and the like in the conventional broadcasting system and elevator intercom system are urgently needed to be solved.

Disclosure of Invention

In view of the above, the present invention provides a method for controlling a remote voice communication system, which can solve the problems of single application scenario, high construction cost, easy aging of a line, limited communication distance, poor communication effect, etc. of the existing voice communication system. In addition, based on the control method of the remote voice communication system provided by the invention, the invention further provides a broadcasting system and an elevator intercom system.

The invention provides a control method of a remote voice communication system, wherein the remote voice communication system comprises a cloud server, a fixed host and at least 1 receiver bound with the fixed host, which are connected through a public network, and the fixed host and the receiver are automatically accessed to the cloud server after being electrified; the control method of the remote voice communication system comprises the following steps:

the fixed host can send voice information or initiate a call request to the selected receiver through the cloud server, and the receiver can initiate the call request to the fixed host through the cloud server.

Preferably, the remote voice communication system further comprises a mobile host, wherein the mobile host is an intelligent mobile device provided with a management APP and is connected with the cloud server through the management APP;

the mobile host is used for replacing the fixed host, the cloud server is used for sending voice information or initiating a call request to the selected receiver, and the receiver can initiate the call request to the mobile host through the cloud server.

Preferably, the fixed host and the receiver are bound to each other through the mobile host, and the binding step includes:

s1, adding a fixed host, opening a management APP of the mobile host, and scanning or manually inputting an IMEI number two-dimensional code binding management APP of the fixed host and the fixed host;

s2, adding a receiver, and scanning one by one or manually inputting the IMEI number two-dimensional code of the receiver to bind and manage the APP and the receiver.

Preferably, the sending of the voice message from the stationary host to the receiver comprises:

in the instant broadcasting mode, the fixed host firstly collects external voice signals, then codes the voice signals and sends the coded voice signals to the cloud server, and the cloud server sends the voice signals to the receiver selected by the fixed host and finally decodes and plays the voice signals by the receiver;

in the text broadcasting mode, the fixed host converts received text information into a voice signal and encodes the voice signal, then sends the encoded voice signal to the cloud server, and the cloud server sends the voice signal to the receiver selected by the fixed host and finally decodes and plays the voice signal by the receiver;

and in the recording and broadcasting mode, the fixed host stores the recorded voice signals in advance, then codes the voice signals at the appointed time and sends the coded voice signals to the cloud server, and the cloud server sends the voice signals to the receiver selected by the fixed host and finally decodes and plays the voice signals by the receiver.

Preferably, the receiver is provided with a multi-channel sound card board, a plurality of audio branches for connecting the telephone are arranged on the multi-channel sound card board, and each audio branch is independently provided with a relay switch;

when the host calls the receiver, the number of the receiver is selected to send out a calling request through the fixed host or the mobile host, the cloud server sends the calling request to the receiver with the number through the public network, the receiver extracts the call information and then controls a relay switch of the corresponding phone to be opened, and the phone rings for n times and then automatically answers;

when the receiver calls the host, pressing a talk-back key of the phone, automatically sending a call request to a cloud server by the receiver connected with the phone, automatically sending the call request to a fixed host and a mobile host bound with the receiver by the cloud server, and starting answering after an answering key of the fixed host or the mobile host is pressed;

the mode of call termination between the fixed host or the mobile host and the receiver comprises the following steps:

the fixed host or the mobile host is actively hung up, and the receiver cannot be hung up;

and automatically hanging up after the conversation time exceeds T seconds.

Preferably, the receiver has pre-stored emergency contact calls;

when the receiver calls the fixed host or the mobile host without response or the receiver cannot be communicated with the cloud server to call, the receiver actively dials the emergency contact call.

Preferably, the receiver for implementing the remote voice communication system control method comprises a switchable mains power supply and a rechargeable battery, and a solar panel capable of charging the rechargeable battery.

Preferably, the receiver for implementing the remote voice communication system control method further includes an external receiver antenna, and the receiver antenna are connected by a coaxial cable.

The invention also provides a broadcasting system, which adopts the control method of the remote voice communication system recorded in any technical scheme.

The invention also provides an elevator intercom system, which adopts the control method of the remote voice communication system recorded by any one of the technical schemes;

the receiver is provided with an echo cancellation circuit.

The invention has the beneficial effects that:

the remote voice communication system is connected through a Cat.1 public network, group management is carried out on a host and a receiver in the system through a cloud server, and the remote voice communication system can be applied to various application scenes such as broadcasting, elevator talkback, entrance guard talkback and the like;

the dual-host mode of the fixed host and the mobile host is adopted, so that the convenience of host management is improved;

the fixed host can send instant broadcast, text broadcast and recording broadcast to the receiver, so that the functions are more abundant;

the remote voice communication system reduces the wiring cost and has no limitation on communication distance under the coverage of 4G signals.

Drawings

The invention is described in detail below with reference to examples and figures, in which:

fig. 1 is a schematic diagram of a control method of a remote voice communication system according to the present invention.

Fig. 2 is a flow chart of code binding between a fixed host and a receiver by a mobile host.

Fig. 3 is a schematic circuit diagram of a first audio power amplifier circuit and a second audio power amplifier circuit.

Fig. 4 is a schematic diagram of a broadcasting system of embodiment 1.

Fig. 5 is a schematic diagram of an elevator intercom system according to embodiment 2.

Fig. 6 is a schematic circuit diagram of the multiple sound card of embodiment 2.

Fig. 7 is a schematic diagram of an echo cancellation circuit according to embodiment 2.

Description of reference numerals:

100-fixed host, 200-receiver, 300-cloud server, 400-mobile host, 10-first Cat.1 public network module, 11-first 4G antenna, 12-first SIM internet of things card, 13-first audio power amplifier circuit, 14-keyboard, 15-first Flash memory chip, 16-first TFT LCD, 17-first interphone, 18-first USB interface, 19-first LED status indicator lamp, 110-first power management module, 20-second Cat.1 public network module, 21-second 4G antenna, 22-second SIM internet of things card, 23-second audio power amplifier circuit, 24-call key, 25-second interphone, 26-second USB interface, 27-second LED status indicator lamp, 28-multichannel sound card board, 210-second power management module, 211-rechargeable battery, 212-solar panel.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Thus, a feature indicated in this specification will serve to explain one of the features of one embodiment of the invention, and does not imply that every embodiment of the invention must have the stated feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.

The principles of the present invention will be described in detail below with reference to the accompanying drawings and examples.

As shown in fig. 1-2, the remote voice communication system includes a cloud server 300 connected via a public network, a fixed host 100, and at least 1 receiver 200 bound to the fixed host 100, wherein the fixed host 100 and the receiver 200 are powered on and then automatically access to the cloud server 300;

the stationary host 100 may transmit voice information or initiate a call request to a selected receiver 200 through the cloud server 300, and the receiver 200 may initiate a call request to the stationary host 100 through the cloud server 300.

The remote voice communication system is connected through a Cat.1 public network, group management is carried out on the host and the receiver 200 in the system through the cloud server 300, the system can be applied to various application scenes such as broadcasting, elevator talkback and entrance guard talkback, the wiring cost is reduced, and the limitation of communication distance is avoided under the coverage of 4G signals.

The stationary main unit 100 is disposed in a control room, such as a broadcasting room of a broadcasting station, or a monitoring room of a property center, etc. The fixed host 100 comprises a first Cat.1 public network module 10 serving as a micro control processor, and a first 4G antenna 11, a first SIM internet of things card 12, a first audio power amplifier circuit 13, a key pad 14, a first Flash storage chip 15, a first TFT liquid crystal display screen 16, a first communicator 17, a first USB interface 18, a first LED state indicator lamp 19 and other components which are connected with the first Cat.1 public network module 10. The fixed host 100 further includes a first power management module 110, and the first power management module 110 is connected to the first cat.1 public network module 10 and the first audio power amplifier circuit 13, and is configured to provide a required power. The first USB interface 18 may perform a software upgrade on the first cat.1 public network module 10. The keypad 14 is used to control the stationary host 100 and to input information to the stationary host 100. The first Flash storage chip 15 is used for storing voice information and text information to be played. The first communicator 17 comprises a microphone and a loudspeaker, and the first audio power amplifier circuit 13 is used for driving the loudspeaker to sound.

The plurality of receivers 200 can be arranged, and each receiver 200 includes a second cat.1 public network module 20 as a micro-control processor, and a second 4G antenna 21 connected to the second cat.1 public network module 20, a second SIM internet of things card 22, a second audio power amplifier circuit 23, a call key 24, a second communicator 25, a second USB interface 26, and a second LED status indicator lamp 27. The second power management module 210 is connected to the second cat.1 public network module 20 and the second audio power amplifier circuit 23, and is configured to provide a required power. The second USB interface 26 may perform a software upgrade on the second cat.1 public network module 20. A call key 24 is provided on the second communicator 25 for one-touch initiation of a call with the stationary host 100 or the mobile host 400. The second communicator 25 comprises a microphone and a loudspeaker, and the second audio power amplifier circuit 23 is used for driving the loudspeaker to sound.

In this embodiment, the circuit schemes of the first audio power amplifier circuit 13 and the second audio power amplifier circuit 23 are shown in fig. 3, after the first cat.1 public network module 10 or the second cat.1 public network module 20 receives the signal decoding, the output audio signal is input from the U19 TDA2003L audio power amplifier 1 pin through C5, R4, R6, C6, and R9, R8, and C7 are negative feedback circuits. The audio signal is amplified and then output from a TDA2003L audio power amplifier 4 pin through a C10.

In this embodiment, the remote voice communication system further includes a mobile host 400, and the mobile host 400 is connected to the cloud server 300 through the management APP for the smart mobile device installed with the management APP. The smart mobile device can be a tablet or a portable device such as a smart phone.

The mobile host 400 is used instead of the fixed host 100, that is, the fixed host 100 and the mobile host 400 may operate as hosts at the same time, or the fixed host 100 or the mobile host 400 may be used separately.

As with the stationary host 100, the mobile host 400 sends voice information or initiates a call request to the selected receiver 200 through the cloud server 300 via the SIM card, and the receiver 200 may initiate a call request to the mobile host 400 through the cloud server 300.

Because this embodiment has adopted the dual host mode of fixed host + mobile host, has improved the convenience of host management. For example, in a broadcasting system, the mobile host 400 can be used to be separated from the limit of a control room to control the broadcasting work at any time and any place, and for example, in an elevator intercom system, the situation that an operator in the control room temporarily leaves to cause that a distress call is not answered by a person can be avoided. In addition, double-line management can be performed by using double hosts, and personnel in different levels respectively control the fixed host 100 and the mobile host 400, so that the management means of the remote voice communication system is richer, and the operation is more convenient.

In this embodiment, the fixed host 100 and the receiver 200 may also bind the codes through the mobile host 400, and the binding step includes:

s1, adding a fixed host, opening a management APP of the mobile host, and scanning or manually inputting an IMEI binding management APP of the fixed host and the fixed host;

s2, adding a receiver, and scanning one by one or manually inputting IMEI binding management APP and the receiver of the receiver.

Each fixed host and each receiver have independent unique IMEI numbers, and the IMEI numbers are short names of International Mobile Equipment Identity (International Mobile Equipment Identity) and commonly called serial numbers. During production, the fixed host and the shell of the receiver are both attached with labels, and the labels are attached with IME numbers and two-dimensional codes generated together with the IME numbers.

In this embodiment, the stationary host 100 may initiate broadcast communication to the receiver 200 in one direction. In addition, the stationary master 100 can perform a two-way call with the receiver 200.

When the fixed host 100 initiates broadcast communication unidirectionally, the following three modes are included:

in the instant broadcasting mode, the fixed host 100 firstly acquires an external voice signal, then encodes the voice signal and transmits the encoded voice signal to the cloud server 300, the cloud server 300 then transmits the voice signal to the receiver 200 selected by the fixed host 100, and finally the receiver 200 decodes and plays the encoded voice signal;

in the text broadcasting mode, the fixed host 100 converts the received text information into a voice signal and encodes the voice signal, then sends the encoded voice signal to the cloud server 300, and the cloud server 300 sends the voice signal to the receiver 200 selected by the fixed host 100, and finally the receiver 200 decodes and plays the voice signal. In order to realize the text broadcasting mode, the first cat.1 public network module 10 is provided with a TTS (text to speech) module, converts a text into a PCM format file by adopting a TTS library of science news, aviation and agile voice, and converts the PCM format file into an analog signal by a CODEC for output.

In the recording and broadcasting mode, the fixed host 100 stores the recorded voice signal in advance, encodes the voice signal at a designated time and then transmits the encoded voice signal to the cloud server 300, the cloud server 300 transmits the voice signal to the receiver 200 selected by the fixed host 100, and finally the receiver 200 decodes and plays the encoded voice signal.

Of course, the mobile host 400 may also initiate broadcast communication to the receiver 200 in one way through the above three modes by managing the APP.

Example 1

On the basis of a control method of a remote voice communication system, the invention provides a broadcasting system.

As shown in fig. 4, the broadcasting system includes a cloud server 300, a fixed host 100, and a plurality of receivers 200 bound to the fixed host 100, which are connected via a public network, and the fixed host 100 and the receivers 200 are automatically accessed to the cloud server 300 after being powered on.

The stationary host 100 may transmit voice information or initiate a call request to the selected receiver 200 through the cloud server 300, and the receiver 200 may initiate a call request to the stationary host 100 through the cloud server 300.

The broadcasting system is connected through a Cat.1 public network, group management is carried out on the host and the receiver 200 in the system through the cloud server 300, wiring cost is reduced, and no limitation of communication distance exists under the coverage of 4G signals.

The fixed host 100 is arranged in a control room (a broadcasting room of a broadcasting station), and the fixed host 100 comprises a first cat.1 public network module 10 serving as a micro control processor, and a first 4G antenna 11, a first SIM internet of things card 12, a first audio power amplifier circuit 13, a keyboard 14, a first Flash storage chip 15, a first TFT liquid crystal display 16, a first communicator 17, a first USB interface 18, a first LED status indicator 19 and other components connected with the first cat.1 public network module 10. The fixed host 100 further includes a first power management module 110, and the first power management module 110 is connected to the first cat.1 public network module 10 and the first audio power amplifier circuit 13, and is configured to provide a required power. The first USB interface 18 can upgrade the software of the first cat.1 public network module 10, and can also be inserted into a USB disk to play music, promotional materials, scientific knowledge, and other information. The keypad 14 is used to control the stationary host 100 and to input broadcast information to the stationary host 100. The first communicator 17 comprises a microphone and a loudspeaker, and the first audio power amplifier circuit 13 is used for driving the loudspeaker to sound.

The stationary main unit 100 is powered by a mains power supply. Since the broadcast usually needs to play a sudden notification, a UPS power supply may also be added to the stationary host 100 to ensure that the stationary host 100 can continue to operate during a power outage. In order to ensure the communication signal quality of the fixed host 100, the fixed host 100 and the first 4G antenna 11 adopt a split design, and the first 4G antenna 11 is installed outdoors or near a window through the SAM connector, so as to facilitate the reception and transmission of wireless signals.

In this embodiment, the broadcast system further includes a mobile host 400, and the mobile host 400 is connected to the cloud server 300 through a management APP for an intelligent mobile device installed with the management APP. The smart mobile device can be a tablet or a portable device such as a smart phone.

Because this embodiment has adopted the dual host mode of fixed host + mobile host, has improved the convenience of host management. The use of the mobile host 400 can remove the restriction of the control room and control the operation of the receiver 200 at any time and any place. In addition, double-host can be used for double-line management, and personnel at different levels respectively control the fixed host 100 and the mobile host 400, so that the management means of the broadcasting system is richer, and the operation is more convenient.

The receiver 200 may also actively talk to the stationary host 100 or the mobile host 400 in case of emergency. For example, when people are in danger in the field, the call key 24 can be pressed to start a call with the fixed host 100 or the mobile host 400 for help.

In this embodiment, the fixed host 100 and the receiver may also bind the codes through the mobile host 400, and the binding step includes:

s2, adding receivers, and scanning one by one or manually inputting IMEI binding management APP and the receivers of the receivers.

in the text broadcasting mode, the fixed host 100 converts the received text information into a voice signal and encodes the voice signal, and then sends the encoded voice signal to the cloud server 300, and the cloud server 300 sends the voice signal to the receiver 200 selected by the fixed host 100, and finally the receiver 200 decodes and plays the voice signal. In order to realize the text broadcasting mode, the first cat.1 public network module 10 is provided with a TTS (text to speech) module, converts a text into a PCM format file by adopting a TTS library of science news and agile voice, and converts the PCM format file into an analog signal by a CODEC for output.

In this embodiment, the receiver 200 includes a switchable mains power supply and a rechargeable battery 211, and a solar panel 212 for charging the rechargeable battery 211. The receiver 200 can utilize the mains supply to supply power when the mains supply is cut off, the rechargeable battery 211 can be automatically switched to supply power, and the solar panel 212 is used for charging the rechargeable battery 211.

Example 2

The safety of the elevator is always put in the first place, and a perfect five-party elevator intercommunication system is an important component for guaranteeing the safe operation of the elevator. Once the elevator has a fault, people trapped in the elevator can be in contact with a management center or the outside through the elevator intercom system so as to timely rescue the trapped people, the life safety of each passenger is ensured, and a safe elevator environment is created for the people who take the elevator, which is the most significant of the system.

On the basis of the control method of the remote voice communication system, the invention also provides an elevator intercom system.

As shown in fig. 5, the elevator intercom system includes a cloud server 300 connected via a public network, a fixed host 100, and at least 1 receiver 200 bound to the fixed host 100, wherein the fixed host 100 and the receiver 200 are automatically accessed to the cloud server 300 after being powered on;

The embodiment thoroughly solves the problems of poor tone quality, limited transmission distance, unstable signals and the like of the traditional talkback system, improves the efficiency of processing elevator faults, and achieves the purpose of efficiently rescuing the trapped personnel of the elevator.

The elevator intercom system is connected through a Cat.1 public network, group management is carried out on the host and the receivers 200 in the system through the cloud server 300, five-party communication among a control room, a car roof, a pit and an elevator machine room can be achieved, and the receivers 200 arranged in the elevator can be broadcasted, such as emergency notification, popular science knowledge, light music and the like.

The stationary main unit 100 is disposed in a control room of the property center. The fixed host 100 can record information such as call times, missed calls and the like, retain call records, promote single elevator emergency calls to a multifunctional comprehensive management level, and construct a safe and convenient environment for improving safe operation of the elevator and rescuing faults afterwards.

The fixed host 100 comprises a first Cat.1 public network module 10 serving as a micro control processor, and a first 4G antenna 11, a first SIM internet of things card 12, a first audio power amplifier circuit 13, a key pad 14, a first Flash storage chip 15, a first TFT liquid crystal display screen 16, a first communicator 17, a first USB interface 18, a first LED state indicator lamp 19 and other components which are connected with the first Cat.1 public network module 10. The fixed host 100 further includes a first power management module 110, and the first power management module 110 is connected to the first cat.1 public network module 10 and the first audio power amplifier circuit 13, and is configured to provide a required power. The first USB interface 18 may perform a software upgrade on the first cat.1 public network module 10. The keypad 14 is used to control the stationary host 100 and to input information to the stationary host 100. The first Flash storage chip 15 is used for storing voice information and text information to be played. The first communicator 17 comprises a microphone and a loudspeaker, and the first audio power amplifier circuit 13 is used for driving the loudspeaker to sound.

The plurality of receivers 200 may be arranged, and each receiver 200 includes a second cat.1 public network module 20 serving as a micro-control processor, and a second 4G antenna 21, a second SIM internet of things card 22, a second audio power amplifier circuit 23, a second USB interface 26, and a second LED status indicator lamp 27 connected to the second cat.1 public network module 20. The second power management module 210 is connected to the second cat.1 public network module 20 and the second audio power amplifier circuit 23, and is configured to provide a required power. The second USB interface 26 may perform a software upgrade on the second cat.1 public network module 20.

The fixed main machine 100 can realize the unified management of the whole elevator group, and can realize the intercommunication between any elevator car extension in the elevator group and the management machine, the fixed main machine 100 can call the receiver 200 of any elevator, and any receiver 200 and phone in the elevator group can call the fixed main machine 100. The fixed main unit 100 can make a call to all receivers 200 in the system, and the number of the elevator can be clearly seen in the caller identification of the fixed main unit 100. This greatly facilitates the management of the elevator intercom system.

In this embodiment, the elevator intercom system further includes a mobile host 400, and the mobile host 400 is connected with the cloud server 300 through the management APP for installing the intelligent mobile device of the management APP. The smart mobile device can be a tablet or a portable device such as a smart phone.

As with the stationary host 100, the mobile host 400 sends voice information or initiates a call request to a selected receiver 200 through the cloud server 300 by using its own SIM card, and the receiver 200 may initiate a call request to the mobile host 400 through the cloud server 300.

Because this embodiment has adopted the two host computer modes of fixed host computer + mobile host computer, has improved the convenience of host computer management, can avoid control room operating personnel to leave temporarily and cause the distress call nobody to answer. In addition, double-line management can be performed by using double hosts, and personnel in different levels respectively control the fixed host 100 and the mobile host 400, so that the management means of the elevator intercom system is richer, and the operation is more convenient.

Each fixed host and each receiver have independent unique IMEI number, and the IMEI number is short for International Mobile Equipment Identity and is commonly called a serial number. During production, the fixed host and the shell of the receiver are both attached with labels, and the labels are attached with IME numbers and two-dimensional codes generated together with the IME numbers.

In this embodiment, the receivers 200 are disposed in the unit elevators, and one receiver 200 is generally provided for each elevator. If the elevators share the machine room or the elevators are close to each other, two or more elevators may share one receiver 200.

The elevator intercom system needs to realize barrier-free communication among a control room, a car roof, a pit and an elevator machine room. Different from the broadcasting system of the embodiment 1, the elevator intercom system adopts the form of the multipath sound card board and a plurality of parallel telephones to replace a second communicator 25 in the broadcasting system, the plurality of telephones are distributed in a control room, a car roof, a pit and an elevator machine room, and a calling key 24 is further integrated on the telephones. The call key 24 is used to start a call with the stationary host 100 or the mobile host 400 by one key.

The multiple sound card board 28 is located in the body of the receiver 200 and connected with telephones distributed in the car, the car roof, the pit and the elevator machine room through wires.

As shown in fig. 6, the multi-channel sound card 28 is provided with a plurality of audio branches, each branch is separately provided with a relay switch controlled by the second cat.1 public network module 20, and each phone is connected to an external port of one of the audio branches.

The audio signal input end of the multichannel sound card board 28 is connected with the audio signal output end of the second audio power amplification circuit, and can transmit the amplified audio signal to the loudspeaker of the phone in conversation. For example, when the host computer is in communication with a telephone, the relay switch SW1 is opened under the control of the Cat.1 public network module, other relay switches are kept in a closed state, and after the relay switch SW1 is opened, an audio signal is output to the JP1 socket external telephone from a pin 3 of the RL1, and then the audio signal is sounded from a loudspeaker in the telephone.

The multi-channel sound card board 28 is also provided with an echo cancellation circuit, and a voice signal of the telephone microphone enters the echo cancellation circuit through an audio branch circuit to perform echo cancellation, and then enters the second cat.1 public network module 20 to be sent to the host. Taking the example of the communication between the host and a local phone, when speaking through the microphone of the phone, the output from the JP1 socket to pin 3 of the relay RL1 is output through pin 1 to pin 4 of the transformer, the output is output from pin 3 through the T1 transformer, and the output is output to the microphone input end of the echo cancellation circuit through VR3, C1 and R5.

After the call is finished, the second cat.1 public network module 20 controls the SW1 to turn off a relay switch of one party. Other paths have the same communication principle and are not influenced by each other through relay switch control.

As shown in fig. 7, a PNC103 LQFP48 chip is used in the echo cancellation circuit, the chip is powered by 3.3V, and a voice signal collected by a microphone of the phone is connected to the echo cancellation circuit from an MIC input end of J4, and then is input into the chip through C3 and R14; in addition, the sampling signal collected from the audio signal output end of the second audio power amplifier circuit is accessed into the echo eliminating circuit from the AEC echo signal input end of the J4, and then enters the chip through C25, R32 and C21. The chip can compare the microphone voice signal with the sampling signal and eliminate echo. The audio signal after eliminating the echo will pass through R10 and C6, and then output to the second cat.1 public network module 20 from the audio output port of J4.

The receiver 200 further comprises an external receiver antenna, and the receiver 200 is connected to the receiver antenna through a coaxial cable. The receiver antenna may be placed outdoors or near a window to facilitate reception and transmission of wireless signals.

In this embodiment, the receiver 200 transmits the status information to the stationary host 100 and the mobile host 400 in real time via the cloud server 300.

When the host calls the receiver 200, the fixed host 100 or the mobile host 400 selects the number of the receiver 200 to send a call request, the cloud server 300 sends the call request to the receiver 200 with the number through the public network, the receiver 200 extracts the call information and then controls the relay switch of the corresponding phone to be opened, and the phone rings for 3 times and then automatically answers;

when the receiver 200 calls the host, pressing a talk-back key of the phone, the receiver 200 connected with the phone automatically sends a call request to the cloud server 300, the cloud server 300 automatically sends a call request to the fixed host 100 and the mobile host 400 bound with the receiver 200, and the fixed host 100 or the mobile host 400 starts to answer after an answer key is pressed;

the call termination between the fixed host 100 or the mobile host 400 and the receiver 200 includes:

the fixed host 100 or the mobile host 400 is actively hung up, and the receiver 200 cannot be hung up, so that the safety of personnel in the elevator is guaranteed, and the phone is prevented from being hung up carelessly when the person asks for help;

the call is automatically hung up after the call duration exceeds 120 seconds, and the setting is to avoid that the call line of the fixed host 100 and the mobile host 400 is continuously occupied and the calls of other extension sets are influenced because no phone or the fixed host 100 and the mobile host 400 are hung up when the call is ended.

In this embodiment, the receiver 200 pre-stores the emergency contact call;

when the receiver 200 calls the stationary host 100 or the mobile host 400 without response, or the receiver 200 cannot communicate with the cloud server 300 to make a call, the receiver 200 actively dials an emergency contact call. Specifically, when the elevator has a fault, the receiver 200 calls the host, and when the control room is unattended or the cloud server 300 has a fault, no answer is given for 60 seconds, and the receiver 200 can actively dial a pre-stored emergency contact phone for calling through the voltage call function.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A remote voice communication system control method is characterized in that the remote voice communication system comprises a cloud server, a fixed host and at least 1 receiver bound with the fixed host which are connected through a public network, and the fixed host and the receiver are automatically accessed to the cloud server after being electrified; the control method of the remote voice communication system comprises the following steps:

2. The remote voice communication system control method of claim 1, wherein the remote voice communication system further comprises a mobile host, the mobile host is an intelligent mobile device installed with a management APP, and is connected with the cloud server through the management APP;

3. The remote voice communication system control method of claim 2, wherein the fixed host and the receiver are bound to each other by the mobile host, and the binding step comprises:

s1, adding a fixed host, opening a management APP of the mobile host, and scanning or manually inputting an IMEI number two-dimensional code of the fixed host to bind the management APP and the fixed host;

4. The method of claim 1, wherein the sending of the voice message from the stationary host to the receiver comprises:

5. The method as claimed in claim 1, wherein the receiver has a multi-channel sound card board, the multi-channel sound card board has a plurality of audio branches for connecting with the phone, each audio branch has a relay switch separately;

when a receiver calls a host, pressing a talk-back key of the phone, automatically sending a call request to a cloud server by the receiver connected with the phone, automatically sending the call request to a fixed host and a mobile host bound with the receiver by the cloud server, and starting answering after an answering key of the fixed host or the mobile host is pressed;

the call termination mode of the fixed host or the mobile host and the receiver comprises the following steps:

and automatically hanging up after the conversation time exceeds T seconds.

6. The remote voice communication system control method of claim 5, wherein the receiver has pre-stored an emergency contact call;

7. The method as claimed in claim 1, wherein the receiver for implementing the method comprises a switchable mains power supply and a rechargeable battery, and a solar panel for charging the rechargeable battery.

8. The remote voice communication system control method of claim 1, wherein the receiver for implementing the remote voice communication system control method further comprises an external receiver antenna, and the receiver antenna are connected by a coaxial cable.

9. A broadcasting system using the remote voice communication system control method according to any one of claims 1 to 8.

10. An elevator intercom system, characterized in that the elevator intercom system employs the remote voice communication system control method of any one of claims 1 to 8;

the receiver is provided with an echo cancellation circuit.