CN116055605A - IP network explosion-proof public address instruction intercom telephone with voice recognition control function - Google Patents

Abstract

The invention provides an IP network explosion-proof sound amplifying instruction intercom telephone with a voice recognition control function, which comprises an explosion-proof shell outer lead-out cable, an explosion-proof shell inner main control circuit and an explosion-proof shell outer intrinsic safety circuit which are connected in sequence; the anti-noise sound-proof device comprises an explosion-proof shell, a sound-proof shell and a fault detection circuit, wherein the intrinsic safety circuit outside the explosion-proof shell comprises a display circuit, a switch circuit, a keyboard circuit, a background noise detection circuit, an anti-noise microphone circuit, a built-in loudspeaker circuit, an anti-noise sound pick-up circuit, a singlechip control circuit b and a fault detection processing circuit a; the single chip microcomputer control circuit b is respectively connected with the display circuit, the switch circuit, the keyboard circuit, the background noise detection circuit and the fault detection processing circuit a, and the anti-noise microphone circuit and the built-in speaker circuit are both connected with the fault detection processing circuit a. The invention can realize the voice information recognition function and perform related operations of calling and talkbacking, zone calling and talkbacking and the like according to the instruction content of the voice information, thereby achieving the purpose of freeing hands.

Description

IP network explosion-proof public address instruction intercom telephone with voice recognition control function

Technical Field

The invention relates to an intercom, in particular to an IP network explosion-proof public address instruction intercom with a voice recognition control function.

Background

At present, the public address intercom system at the present stage is generally constructed by adopting an IP local area network structural design, and core equipment forming the public address intercom system is an explosion-proof public address instruction intercom telephone. The circuit control part of the explosion-proof sound amplifying instruction intercom telephone is generally composed of a power module, a power amplifier module, a core communication control module, a network exchange module, a telephone handle (a microphone, a receiver), a keyboard, an indicator light, an off-hook switch, a wiring terminal row and the like, thereby realizing the functions of intercom, single call, group call, full call and the like. The operation mode of the explosion-proof sound amplifying instruction intercom telephone is that a telephone handle is picked up (off-hook) by hand, the telephone number of the opposite party is input through a keyboard, a broadcasting instruction or a person name is issued through the telephone handle after the communication is completed, the user waits for the called party to answer intercom after the issuing is completed, and the user can pick up the telephone after the person is found to hear the intercom.

However, the conventional explosion-proof sound amplifying instruction intercom telephone still continues the use mode of manual operation in the use process, and the purpose of releasing both hands cannot be achieved.

Disclosure of Invention

Aiming at the defects existing in the problems, the invention provides the IP network explosion-proof public address instruction interphone which can realize the voice information recognition function and perform related operations such as dialing according to the content of voice information so as to release hands and has the voice recognition control function.

In order to achieve the above purpose, the invention provides an IP network explosion-proof public address instruction intercom telephone with a voice recognition control function, which comprises an explosion-proof shell outer lead-out cable, an explosion-proof shell inner main control circuit and an explosion-proof shell outer intrinsic safety circuit which are connected in sequence;

the intrinsic safety circuit outside the flameproof shell comprises a display circuit, a switch circuit, a keyboard circuit, a background noise detection circuit, an anti-noise microphone circuit, a built-in loudspeaker circuit, an anti-noise voice pick-up circuit, a singlechip control circuit b and a fault detection processing circuit a; the single chip microcomputer control circuit b is respectively connected with the display circuit, the switch circuit, the keyboard circuit, the background noise detection circuit and the fault detection processing circuit a, and the anti-noise microphone circuit and the built-in speaker circuit are both connected with the fault detection processing circuit a.

Preferably, the main control circuit in the flameproof shell comprises an intrinsic safety power supply processing circuit, a communication isolation circuit, an audio amplification circuit, a voice recognition circuit, an intrinsic safety processing circuit, a singlechip control circuit a, an ARM core module circuit, a power supply module, an alarm input/output interface circuit, a network+optical fiber interface circuit, an audio power amplification circuit and a fault detection processing circuit b; the power module is respectively connected with the intrinsic safety power supply processing circuit, the singlechip control circuit a, the alarm input/output interface circuit, the ARM core module circuit, the network+optical fiber interface circuit, the audio power amplification circuit and the audio amplification, voice recognition and intrinsic safety processing circuit, the singlechip control circuit a is also respectively connected with the communication isolation circuit, the ARM core module circuit, the alarm input/output interface circuit and the fault detection processing circuit b, the ARM core module circuit is also respectively connected with the network+optical fiber interface circuit, the audio power amplification circuit and the audio amplification, voice recognition and intrinsic safety processing circuit, the singlechip control circuit a is also respectively connected with the communication isolation circuit, the ARM core module circuit, the alarm input/output interface circuit and the fault detection processing circuit b, and the ARM core module circuit is also respectively connected with the network+optical fiber interface circuit, the audio power amplification circuit and the audio amplification, voice recognition and the intrinsic safety processing circuit;

the audio frequency amplifying, voice identifying and intrinsic safety processing circuit is also connected with the fault detection processing circuit a and the anti-noise voice pick-up circuit, and the intrinsic safety power supply processing circuit and the communication isolation circuit are both connected with the singlechip control circuit b.

Preferably, the flameproof shell external lead-out cable comprises an AC110/220V power input, a passive contact input and output, a network cable, a single-mode fiber and an flameproof horn loudspeaker;

the AC110/220V power input is connected with the power module, the passive contact input and output is connected with the alarm input/output interface circuit, the network cable+single mode fiber is connected with the network+optical fiber interface circuit, and the explosion-proof horn loudspeaker is connected with the fault detection processing circuit b.

Preferably, the anti-noise voice pick-up circuit is sequentially connected with the audio amplifying, voice recognition and intrinsic safety processing circuit and the ARM core module circuit;

the anti-noise voice pick-up circuit picks up and inputs voice signals into the audio amplifying, voice recognition and intrinsic safety processing circuit to conduct voice recognition and convert the voice signals into digital command signals, the digital command signals are input into the ARM core module circuit to execute corresponding voice command operation, and the ARM core module circuit transmits the voice signals to other IP network anti-explosion public address command interphone with voice recognition control functions through the network+optical fiber interface circuit and a network switching mode.

Preferably, the anti-noise microphone circuit and the built-in speaker circuit are both connected with the fault detection processing circuit a, and the fault detection processing circuit a is connected with the singlechip control circuit b;

the fault detection processing circuit a inputs the detected anti-noise microphone circuit fault information and the built-in speaker circuit fault information into the singlechip control circuit b, and the singlechip control circuit b inputs the anti-noise microphone circuit fault information and the built-in speaker circuit fault information into the display circuit and displays the anti-noise microphone circuit fault information and the built-in speaker circuit fault information in a fault code mode; the anti-noise microphone circuit fault information and the built-in speaker circuit fault information are also uploaded to an operation and maintenance terminal in a local area network to display fault information through a communication isolation circuit, a singlechip control circuit a, an ARM core module circuit and a network+optical fiber interface circuit in sequence.

Preferably, the anti-noise microphone circuit and the built-in speaker circuit are connected with the ARM core module circuit through the fault detection processing circuit a, the audio amplification, voice recognition and intrinsic safety processing circuit, and the ARM core module circuit is connected with the network+optical fiber interface circuit;

the anti-noise microphone circuit inputs the identified audio input information into the ARM core module circuit sequentially through the fault detection processing circuit a, the audio amplification, voice recognition and intrinsic safety processing circuit, and the ARM core module circuit converts the audio input information into digital signals and then transmits the digital signals to other IP network anti-explosion sound amplifying instruction interphones with voice recognition control functions through the network+optical fiber interface circuit and a network switching mode.

Preferably, after the background noise detection circuit is connected with the single-chip microcomputer control circuit b, the detected environmental noise information is input into the single-chip microcomputer control circuit b, and the step of adjusting the output volume through the background noise detection circuit is as follows:

when the environmental noise detected by the background noise detection circuit exceeds a set value, the singlechip control circuit b sends a volume increasing control signal and inputs the volume increasing control signal into the ARM core module circuit through the communication isolation circuit and the singlechip control circuit a in sequence, and the ARM core module circuit increases the output volume of the audio signal of the audio power amplifier circuit and the explosion-proof horn loudspeaker after receiving the volume increasing control signal;

when the environmental noise detected by the background noise detection circuit is reduced below a set value, the singlechip control circuit b sends out a volume recovery control signal, the volume recovery control signal is input into the ARM core module circuit through the communication isolation circuit and the singlechip control circuit a in sequence, and after receiving the volume recovery control signal, the ARM core module circuit reduces the audio signal of the audio power amplification circuit and the output volume of the explosion-proof horn loudspeaker, so that the volume is recovered to the conventional size.

Preferably, the keyboard circuit is connected with the singlechip control circuit b, the key dialing information is encoded by the singlechip control circuit b to form encoded information, the encoded information is sequentially input into the ARM core module circuit by the communication isolation circuit and the singlechip control circuit a, and the ARM core module circuit encodes the encoded information into network data and then sends the encoded information to other IP network explosion-proof sound amplifying instruction interphone with a voice recognition control function.

Preferably, after receiving the alarm signals of the passive switch joints of other alarm systems, the alarm input/output interface circuit inputs the alarm signals into the ARM core module circuit through the singlechip control circuit a in sequence, and the ARM core module circuit encodes the network data of the alarm signals and sends the alarm signals to other IP network explosion-proof public address instruction intercom phones through network exchange so as to carry out linkage alarm, and meanwhile, the alarm input/output interface outputs passive switch joints to link television monitoring equipment.

Preferably, the explosion-proof horn speaker is connected with the single chip microcomputer control circuit a through the fault detection processing circuit b, and the fault detection processing circuit b can detect whether the explosion-proof horn speaker has a fault:

when the fault detection processing circuit b judges that the explosion-proof horn loudspeaker breaks down, fault information is input into the single-chip microcomputer control circuit a to be encoded, the encoded fault information is input into the single-chip microcomputer control circuit b through the communication isolation circuit to be decoded, and the decoded fault information is input into the display circuit to be displayed in a fault code mode; and the encoded fault information is also uploaded to an operation and maintenance terminal in a local area network through the ARM core module circuit and the network and optical fiber interface circuit to display the fault information.

Preferably, the ARM core module circuit detects network check data in real time through the network+optical fiber interface circuit:

when the ARM core module circuit cannot detect network check data, the ARM core module circuit sends out a network failure instruction and inputs the network failure instruction into the singlechip control circuit b through the singlechip control circuit a and the communication isolation circuit;

the singlechip control circuit b decodes the network failure instruction, inputs the network failure instruction into the display circuit, and displays the network failure instruction in a failure code mode;

and the network disconnection fault instruction information is uploaded to an operation and maintenance terminal in the local area network through the network and optical fiber interface circuit to display the network disconnection fault information.

Compared with the prior art, the invention has one of the following advantages:

according to the invention, by additionally arranging the anti-noise voice pick-up circuit, the audio amplifying, voice recognition and intrinsic safety processing circuit, the voice information recognition function can be realized, and related dialing operations such as point call intercom, district call intercom, whole call intercom, fire alarm broadcast release and the like are carried out according to the instruction content of the voice information, so that the purpose of freeing both hands is achieved;

because the keyboard is also input, the control dialing operation can adopt a voice input mode, a keyboard input mode and a voice and keyboard mixed input mode according to the requirements;

by additionally arranging the background noise detection circuit, the output volume of the explosion-proof horn loudspeaker can be changed along with the background noise change of the environment where the telephone station is located, when the environment noise is increased, the output volume of the loudspeaker is also increased, and when the environment noise is reduced, the output volume of the loudspeaker is also reduced;

the state of the vulnerable part can be detected by adding the fault detection processing circuit, when the vulnerable part is judged to be faulty, the generated fault information can be input into the display circuit and displayed in a fault code mode, and the IP network explosion-proof sound amplifying instruction intercom telephone with the voice recognition control function can be managed and maintained without very professional technicians and professional instruments and meters, so that the running and maintenance cost can be effectively reduced;

the output volume of the explosion-proof horn loudspeaker can be changed according to the change of environmental background noise, thereby being beneficial to reducing the use noise generated by the product and having more practical functions;

the number of the explosion-proof horn loudspeakers is set to be at least two, so that the effects of on-site broadcasting and sound amplifying can be increased, and the broadcasting and publishing coverage range is wider;

the circuit structure adopts a modularized design mode and a hot plug design mode, and when a certain part fails, the failed part is easy to replace;

the invention can issue fire alarm broadcast, and can also realize linkage alarm with fire alarm system, program-controlled telephone system, wireless intercom system and television monitoring system, thus realizing the characteristics of interconnection and effective integration;

the invention has the functions of setting and inquiring parameters through the WEB of a computer, and comprises the following specific items: the user name and password, network parameters, MQTT parameters, local numbers, group numbers, partition numbers, full-area numbers, main control numbers, partition numbers, microphone gain, earphone volume, loudspeaker output volume, automatic response time, address book and call recording are more convenient and intelligent to use.

Drawings

Fig. 1 is a block diagram of an embodiment of the present invention.

The main reference numerals are as follows:

1-an intrinsic safety circuit outside the explosion-proof shell; 11-a display circuit; 12-a switching circuit; 13-a keyboard circuit; 14-a background noise detection circuit; 15-an anti-noise microphone circuit; 16-built-in speaker circuitry; 17-an anti-noise voice pick-up circuit; 18-a singlechip control circuit b; 19-a fault detection processing circuit a;

2-a main control circuit in the explosion-proof shell; 21-an intrinsic safety power supply processing circuit; 22-communication isolation circuit; 23-an audio amplification, voice recognition and intrinsic safety processing circuit; 24-a singlechip control circuit a;25-ARM core module circuitry; 26-a power module; 27-alarm input/output interface circuitry; 28-network + fiber optic interface circuitry; 29-an audio power amplifier circuit; 210-a fault detection processing circuit b;

3-leading out a cable outside the explosion-proof shell; 31-AC110/220V power input; 32-passive contact input/output; 33-net twine+single mode fiber; 34-explosion-proof horn speaker.

Detailed Description

As shown in fig. 1, the invention provides an IP network explosion-proof public address instruction intercom telephone with a voice recognition control function, which comprises an explosion-proof shell external lead-out cable 3, an explosion-proof shell internal main control circuit 2 and an explosion-proof shell external intrinsic safety circuit 1 which are sequentially connected.

The flameproof shell external lead-out cable 3 comprises an AC110/220V power input 31, a passive contact input/output 32, a net twine+single mode fiber 33 and an explosion-proof horn loudspeaker 34.

The main control circuit 2 in the flameproof shell comprises an intrinsic safety power supply processing circuit 21, a communication isolation circuit 22, an audio amplifying and voice identifying and intrinsic safety processing circuit 23, a singlechip control circuit a24, an ARM core module circuit 25, a power supply module 26, an alarm input/output interface circuit 27, a network+optical fiber interface circuit 28, an audio power amplifying circuit 29 and a fault detecting and processing circuit b210.

The flameproof housing external intrinsic safety circuit 1 comprises a display circuit 11, a switch circuit 12, a keyboard circuit 13, a background noise detection circuit 14, an anti-noise microphone circuit 15, a built-in speaker circuit 16, an anti-noise voice pick-up circuit 17, a singlechip control circuit b18 and a fault detection processing circuit a19.

In the flameproof housing external lead-out cable 3, an AC110/220V power input 31 is connected with a power module 26, a passive contact input/output 32 is connected with an alarm input/output interface circuit 27, a network cable+single-mode fiber 33 is connected with a network+optical fiber interface circuit 28, and an explosion-proof horn loudspeaker 34 is connected with a fault detection processing circuit b210.

In the main control circuit 2 in the flameproof shell, a power supply module 26 is respectively connected with an intrinsic safety power supply processing circuit 21, an audio amplifying, voice recognition and intrinsic safety processing circuit 23, a singlechip control circuit a24, an alarm input/output interface circuit 27, an ARM core module circuit 25, a network+optical fiber interface circuit 28 and an audio power amplifier circuit 29, the singlechip control circuit a24 is also respectively connected with a communication isolation circuit 22, the ARM core module circuit 25, the alarm input/output interface circuit 27 and a fault detection processing circuit b210, and the ARM core module circuit 25 is also respectively connected with the network+optical fiber interface circuit 28, the audio power amplifier circuit 29 and the audio amplifying, voice recognition and intrinsic safety processing circuit 23.

The audio amplifying, voice identifying and intrinsic safety processing circuit 23 is also connected with the fault detecting and processing circuit a19 and the anti-noise voice pick-up circuit 17, and the intrinsic safety power processing circuit 21 and the communication isolating circuit 22 are both connected with the singlechip control circuit b18.

In the intrinsic safety circuit 1 outside the explosion-proof shell, a singlechip control circuit b18 is respectively connected with a display circuit 11, a switch circuit 12, a keyboard circuit 13, a background noise detection circuit 14, a fault detection processing circuit a19, an intrinsic safety power supply processing circuit 21 and a communication isolation circuit 22, an anti-noise microphone circuit 15 and a built-in speaker circuit 16 are respectively connected with the fault detection processing circuit a19, and an anti-noise voice pick-up circuit 17 is connected with an audio amplifying, voice recognition and intrinsic safety processing circuit 23.

In this embodiment, the ARM core module includes a linux system, a communication protocol, a noise cancellation algorithm and voice record storage, the display circuit 11 is a 6-bit nixie tube display circuit, the switch circuit 12 is 4 independent key switches and 1 magnetic induction switch, the keyboard circuit 13 is a 4×4 matrix keyboard circuit, and the number of the explosion-proof horn speakers 34 is two.

The power module 26 converts the AC110/220V power input by the AC110/220V power input 31 into DC5V power, DC3.3V power, and DC24V power, respectively. The DC5V power supply is respectively supplied to the audio amplifying circuit, the voice recognition circuit, the intrinsic safety processing circuit 23, the ARM core module circuit 25, the alarm input/output interface circuit 27, the network+optical fiber interface circuit 28, and the singlechip control circuit b18 through the intrinsic safety power supply processing circuit 21. The DC3.3V power supply is respectively supplied to the singlechip control circuit a24 and the ARM core module circuit 25, and the DC24V power supply is supplied to the audio power amplifier circuit 29.

The anti-noise voice pick-up circuit 17 is connected to the audio amplification, voice recognition and intrinsic safety processing circuit 23 and the ARM core module circuit 25. The audio amplifying, voice identifying and intrinsic safety processing circuit 23 converts the voice command such as the identified wake-up word, dialing, answering the intercom, issuing the point-calling, group calling, zone calling, whole calling voice broadcasting and fire alarm broadcasting, adjusting the output volume of the microphone, the earphone and the explosion-proof loudspeaker into a digital signal, and the digital signal is input into the ARM core module circuit 25, and the ARM core module circuit 25 transmits the digital signal to other IP network explosion-proof audio amplifying command intercom phones with voice identifying and controlling functions through the network+optical fiber interface circuit 28 and the network exchange mode.

The anti-noise microphone circuit 15 and the built-in speaker circuit 16 are both connected with a fault detection processing circuit a19, and the fault detection processing circuit a19 is connected with a singlechip control circuit b18. The fault detection processing circuit a19 inputs the detected fault information of the anti-noise microphone circuit 15 and the built-in speaker circuit 16 to the single-chip microcomputer control circuit b18, and the single-chip microcomputer control circuit b18 inputs the fault information of the anti-noise microphone circuit 15 and the built-in speaker circuit 16 to the display circuit 11 and displays the fault information in a fault code manner.

The anti-noise microphone circuit 15 and the built-in speaker circuit 16 are connected with an ARM core module circuit 25 through a fault detection processing circuit a19, an audio amplification and voice recognition and intrinsic safety processing circuit 23, and the ARM core module circuit 25 is respectively connected with a network+optical fiber interface circuit 28. The anti-noise microphone circuit 15 inputs the identified audio input information into the ARM core module circuit 25 sequentially through the fault detection processing circuit a19, the audio amplification, the voice recognition and intrinsic safety processing circuit 23, and the ARM core module circuit 25 converts the audio input information into a digital audio signal and then transmits the digital audio signal to other IP network anti-explosion sound amplifying instruction interphones with voice recognition control functions through the network+optical fiber interface circuit 28 and a network switching mode. Meanwhile, the ARM core module circuit 25 performs digital-to-analog conversion on the digital audio signal received from the network+optical fiber interface circuit 28, and the analog audio signal is input to the built-in speaker circuit 16 through the audio amplifying, voice recognition and intrinsic safety processing circuit 23 and the fault detection processing circuit a19 for audio output.

The background noise detection circuit 14 is connected with the singlechip control circuit b18 to input the detected environmental noise information into the singlechip control circuit b18, and the step of adjusting the output volume through the background noise detection circuit 14 is as follows:

when the ambient noise detected by the background noise detection circuit 14 exceeds a set value, the singlechip control circuit b18 sends out a volume increasing control signal and sequentially inputs the volume increasing control signal into the ARM core module circuit 25 through the communication isolation circuit 22 and the singlechip control circuit a 24; after receiving the volume increasing control signal, the ARM core module circuit 25 increases the output volume of the audio signal of the audio power amplifier circuit 29 and the explosion-proof horn loudspeaker 34;

when the ambient noise detected by the background noise detection circuit 14 is reduced below a set value, the singlechip control circuit b18 sends out a volume recovery control signal and sequentially inputs the volume recovery control signal into the ARM core module circuit 25 through the communication isolation circuit 22 and the singlechip control circuit a 24; after receiving the volume restoration control signal, the ARM core module circuit 25 restores the output volume of the audio power amplifier circuit 29 audio signal and the explosion-proof horn speaker 34 to the normal level.

The keyboard circuit 13 is connected with the singlechip control circuit b18, the key dialing information is encoded through the singlechip control circuit b18 to form encoded information, the encoded information is sequentially input into the ARM core module circuit 25 through the communication isolation circuit 22 and the singlechip control circuit a24, and the ARM core module circuit 25 encodes network data and then sends the encoded information to other IP network explosion-proof public address instruction interphones with voice recognition control functions.

In addition, after receiving the alarm signals of the passive switch contacts of other alarm systems, the alarm input/output interface circuit 27 sequentially inputs the alarm signals into the ARM core module circuit 25 through the singlechip control circuit a24, and the ARM core module circuit 25 encodes network data of the alarm signals and sends the network data to other IP network explosion-proof public address instruction intercom phones through network exchange so as to carry out linkage alarm, and meanwhile, the alarm input/output interface 27 outputs passive switch contacts to link television monitoring equipment.

The explosion-proof horn speaker 34 is connected with the single-chip microcomputer control circuit a24 through the fault detection processing circuit b210, and the fault detection processing circuit b210 can detect whether the explosion-proof horn speaker 34 has a fault:

when the fault detection processing circuit b210 determines that the explosion-proof horn speaker 34 is out of order, the fault information is input into the single-chip microcomputer control circuit a24 to be encoded, and the encoded fault information is input into the single-chip microcomputer control circuit b18 through the communication isolation circuit 22 to be decoded, and the decoded fault information is input into the display circuit 11 and displayed in a fault code manner. In addition, the encoded fault information is also transmitted to an operation and maintenance terminal in the local area network through the ARM core module circuit 25 and the network+optical fiber interface circuit 28 for fault information display.

The ARM core module circuit 25 detects network check data in real time through the network+optical fiber interface circuit 28:

when the ARM core module circuit 25 cannot detect network check data, the ARM core module circuit 25 sends out a network failure instruction and inputs the network failure instruction into the singlechip control circuit b18 through the singlechip control circuit a24 and the communication isolation circuit 22; the singlechip control circuit b18 decodes the network failure instruction, inputs the network failure instruction into the display circuit 11, and displays the network failure instruction in a failure code manner.

Specifically, after the two telephones establish a call, the ARM core module circuit 25 of each telephone detects the call audio data stream in real time, and when the call audio data stream is stopped accidentally for more than 30 seconds, the two telephones are automatically reset to the initial standby state.

When the IP network explosion-proof sound amplifying instruction intercom telephone with the voice recognition control function is in a standby state, the telephone number of the current telephone is displayed through the display circuit 11. When a call is made, the telephone number of the opposite party is displayed, and when other calls are made, the telephone number of the incoming call is displayed.

Because the alarm priority is highest, when the IP network explosion-proof public address instruction intercom telephone with the voice recognition control function receives alarm input, the current process is ended unconditionally no matter the telephone is in a call state, a zone call state or a full call state, and the telephone enters an alarm broadcasting state.

The keyboard circuit 13 is provided with shortcut keys such as a main control, a sub control, a local area, a full area and the like, and a user can operate without memorizing the common numbers, so that the keyboard circuit has the characteristic of more convenient use.

In the standby state, the output volume of the anti-noise microphone circuit 15, the built-in speaker circuit 16 and the audio power amplifier circuit 29 can be set through the external keyboard of the telephone, so that the volume adjustment of the microphone, the built-in speaker and the external speaker can be realized without opening the casing locally. In addition, the volume of the microphone, the built-in speaker and the external speaker can be adjusted remotely through the WEB of the computer, debugging personnel can be carried out without going to the installation site of the telephone, and the telephone has the characteristic of more convenient use.

The IP network explosion-proof sound amplifying instruction intercom telephone with the voice recognition control function combines the anti-noise microphone circuit 15 with the ARM core module circuit 25, so that the current telephone has a clear conversation function under 120dB of environmental noise.

The foregoing description of the preferred embodiment of the invention is merely illustrative of the invention and is not intended to be limiting. It will be appreciated by persons skilled in the art that many variations, modifications, and even equivalents may be made thereto without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (10)

1. An IP network explosion-proof sound amplifying instruction intercom telephone with a voice recognition control function is characterized by comprising an explosion-proof shell outer lead-out cable, an explosion-proof shell inner main control circuit and an explosion-proof shell outer intrinsic safety circuit which are connected in sequence;

the intrinsic safety circuit outside the flameproof shell comprises a display circuit, a switch circuit, a keyboard circuit, a background noise detection circuit, an anti-noise microphone circuit, a built-in loudspeaker circuit, an anti-noise voice pick-up circuit, a singlechip control circuit b and a fault detection processing circuit a;

the single chip microcomputer control circuit b is respectively connected with the display circuit, the switch circuit, the keyboard circuit, the background noise detection circuit and the fault detection processing circuit a, and the anti-noise microphone circuit and the built-in speaker circuit are both connected with the fault detection processing circuit a.

2. The IP network explosion-proof sound amplifying instruction intercom telephone with the voice recognition control function according to claim 1, wherein the main control circuit in the explosion-proof shell comprises an intrinsic safety power supply processing circuit, a communication isolation circuit, an audio amplifying circuit, a voice recognition and intrinsic safety processing circuit, a singlechip control circuit a, an ARM core module circuit, a power supply module, an alarm input/output interface circuit, a network+optical fiber interface circuit, an audio power amplifier circuit and a fault detection processing circuit b;

the power module is respectively connected with the intrinsic safety power supply processing circuit, the singlechip control circuit a, the alarm input/output interface circuit, the ARM core module circuit, the network+optical fiber interface circuit, the audio power amplification circuit and the audio amplification, voice recognition and intrinsic safety processing circuit, the singlechip control circuit a is also respectively connected with the communication isolation circuit, the ARM core module circuit, the alarm input/output interface circuit and the fault detection processing circuit b, and the ARM core module circuit is also respectively connected with the network+optical fiber interface circuit, the audio power amplification circuit and the audio amplification, voice recognition and intrinsic safety processing circuit;

the audio frequency amplifying, voice identifying and intrinsic safety processing circuit is also connected with the fault detection processing circuit a and the anti-noise voice pick-up circuit, and the intrinsic safety power supply processing circuit and the communication isolation circuit are both connected with the singlechip control circuit b.

3. The IP network explosion-proof speakerphone with voice recognition control function according to claim 2, wherein the flameproof casing external lead-out cable comprises an AC110/220V power input, a passive contact input/output, a network cable+a single-mode fiber, and an explosion-proof horn speaker;

the AC110/220V power input is connected with the power module, the passive contact input and output is connected with the alarm input/output interface circuit, the network cable+single mode fiber is connected with the network+optical fiber interface circuit, and the explosion-proof horn loudspeaker is connected with the fault detection processing circuit b.

4. The IP network explosion-proof speakerphone with voice recognition control function of claim 3, wherein the anti-noise voice pickup circuit is sequentially connected with the audio amplifying, voice recognition and intrinsic safety processing circuit and the ARM core module circuit;

the anti-noise voice pick-up circuit picks up and inputs voice signals into the audio amplifying, voice recognition and intrinsic safety processing circuit to conduct voice recognition and convert the voice signals into digital command signals, the digital command signals are input into the ARM core module circuit to execute corresponding voice command operation, and the ARM core module circuit transmits the voice signals to other IP network anti-explosion public address command interphones with voice recognition control functions through the network+optical fiber interface circuit and a network switching mode.

5. The IP network explosion-proof speakerphone with voice recognition control function of claim 3, wherein the anti-noise microphone circuit and the built-in speaker circuit are both connected with the fault detection processing circuit a, and the fault detection processing circuit a is connected with the single-chip microcomputer control circuit b;

the fault detection processing circuit a inputs the detected anti-noise microphone circuit fault information and the built-in speaker circuit fault information into the singlechip control circuit b, and the singlechip control circuit b inputs the anti-noise microphone circuit fault information and the built-in speaker circuit fault information into the display circuit and displays the anti-noise microphone circuit fault information and the built-in speaker circuit fault information in a fault code mode; the fault information is also uploaded to an operation and maintenance terminal in a local area network to display the fault information sequentially through the communication isolation circuit, the singlechip control circuit a, the ARM core module circuit and the network+optical fiber interface circuit.

6. The IP network explosion-proof sound amplifying instruction intercom set with voice recognition control function according to claim 3, wherein the anti-noise microphone circuit and the built-in speaker circuit are connected with the ARM core module circuit through the fault detection processing circuit a, the audio amplifying, voice recognition and intrinsic safety processing circuit, and the ARM core module circuit is respectively connected with the network+optical fiber interface circuit;

the anti-noise microphone circuit inputs the identified audio input information into the ARM core module circuit sequentially through the fault detection processing circuit a, the audio amplification, voice recognition and intrinsic safety processing circuit, and the ARM core module circuit converts the audio input information into digital audio signals and then transmits the digital audio signals to other IP network anti-explosion sound amplifying instruction interphones with voice recognition control functions through the network+optical fiber interface circuit and a network switching mode.

7. The IP network explosion-proof speakerphone with voice recognition control function according to claim 3, wherein the step of inputting the detected ambient noise information into the single chip microcomputer control circuit b and adjusting the output volume by the background noise detection circuit after the background noise detection circuit is connected with the single chip microcomputer control circuit b is as follows:

when the environmental noise detected by the background noise detection circuit exceeds a set value, the singlechip control circuit b sends a volume increasing control signal and inputs the volume increasing control signal into the ARM core module circuit through the communication isolation circuit and the singlechip control circuit a in sequence, and the ARM core module circuit increases the output volume of the audio signal of the audio power amplifier circuit and the explosion-proof horn loudspeaker after receiving the volume increasing control signal;

when the environmental noise detected by the background noise detection circuit is reduced below a set value, the singlechip control circuit b sends out a volume recovery control signal, the volume recovery control signal is input into the ARM core module circuit through the communication isolation circuit and the singlechip control circuit a in sequence, and after receiving the volume recovery control signal, the ARM core module circuit reduces the audio signal of the audio power amplification circuit and the output volume of the explosion-proof horn loudspeaker, so that the volume is recovered to the conventional size.

8. The IP network explosion-proof sound amplifying instruction intercom set with the voice recognition control function according to claim 3, wherein the keyboard circuit is connected with the single-chip microcomputer control circuit b, key dialing information is encoded by the single-chip microcomputer control circuit b to form encoded information, the encoded information is sequentially input into the ARM core module circuit through the communication isolation circuit and the single-chip microcomputer control circuit a, and the ARM core module circuit encodes network data of the encoded information and then sends the encoded information to other IP network explosion-proof sound amplifying instruction intercom sets with the voice recognition control function;

the keyboard circuit is connected with the singlechip control circuit b, the key dialing information is encoded through the singlechip control circuit b to form encoded information, and the encoded information is sequentially transmitted to the television monitoring equipment through the communication isolation circuit, the singlechip control circuit a and the alarm input/output interface circuit for linkage.

9. The IP network explosion-proof sound amplifying instruction intercom set with voice recognition control function according to claim 3, wherein the explosion-proof horn speaker is connected with the single-chip microcomputer control circuit a through the fault detection processing circuit b, and the fault detection processing circuit b can detect whether the explosion-proof horn speaker has a fault:

when the fault detection processing circuit b judges that the explosion-proof horn loudspeaker breaks down, fault information is input into the single-chip microcomputer control circuit a to be encoded, the encoded fault information is input into the single-chip microcomputer control circuit b through the communication isolation circuit to be decoded, and the decoded fault information is input into the display circuit to be displayed in a fault code mode; and the encoded fault information is also uploaded to an operation and maintenance terminal in a local area network through the ARM core module circuit and the network and optical fiber interface circuit to display the fault information.

10. The IP network explosion-proof speakerphone with voice recognition control function of claim 3, wherein the ARM core module circuit detects network check data in real time through the network+optical fiber interface circuit:

when the ARM core module circuit cannot detect network check data, the ARM core module circuit sends out a network failure instruction and inputs the network failure instruction into the singlechip control circuit b through the singlechip control circuit a and the communication isolation circuit;

the singlechip control circuit b decodes the network failure instruction, inputs the network failure instruction into the display circuit, and displays the network failure instruction in a failure code mode;

and the network disconnection fault instruction information is uploaded to an operation and maintenance terminal in the local area network through the network and optical fiber interface circuit to display the network disconnection fault information.

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