CN102201838B - Elevator voice intercom system - Google Patents
Elevator voice intercom system Download PDFInfo
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- CN102201838B CN102201838B CN 201110162656 CN201110162656A CN102201838B CN 102201838 B CN102201838 B CN 102201838B CN 201110162656 CN201110162656 CN 201110162656 CN 201110162656 A CN201110162656 A CN 201110162656A CN 102201838 B CN102201838 B CN 102201838B
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Abstract
The invention discloses an elevator voice intercom system comprising a first anti-interference device arranged in an elevator car and a second anti-interference device arranged in an elevator machine room, wherein the first anti-interference device and the second anti-interference device are connected through travelling cables of an elevator. The elevator voice intercom system disclosed by the invention utilizes the existing travelling cables of the elevator as signal transmission media, and no analogue telephone line is required to be paved, thereby reducing the system cost; and in addition,voice signals to be transmitted are converted into digital signals, signals transmitted in the travelling cables are modulated signals obtained by using a digital signal modulated carrier, the modulated signals are demodulated to obtain the digital signals, and the digital signals have high anti-interference performance and are not easy to distort in the demodulating process, so that the voice effect can be improved.
Description
Technical field
The invention belongs to the elevator technology field, relate in particular to a kind of elevator speech talkback system.
Background technology
According to the mandatory provisions of national standard, every elevator must be equipped with a cover intercom system, guarantees the conversation between lift car and the elevator(lift) machine room.
Existing elevator intercom system mainly is to lay analog of telephone line between lift car and elevator(lift) machine room, transmits to realize intercommunication function by voice analog signal.
But there is defective in existing elevator intercom system: lift car can move up and down very frequently, analog of telephone line can be along with moving up and down of car back and forth bending, in the long-time running process of elevator, analog of telephone line very easily ruptures; In addition, elevator hoistways belongs to special airtight place, and its interference is big, and the poor anti jamming capability of analog signal in transmission course, and voice analog signal very easily is subjected to extraneous interference in transmission course and distortion has influence on sound effect; For useful life of prolonging intercom system, guarantee sound effect, must adopt to have high screening ability and fabulous flexible special substance is made analog of telephone line, cause increasing substantially of elevator intercom system cost.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of elevator speech talkback system, this system has good antijamming capability and sound effect, and effectively reduces system cost.
For achieving the above object, the invention provides following technical scheme:
A kind of elevator speech talkback system comprises:
Be arranged at first anti-interference equipment in the lift car, described first anti-interference equipment comprises speech sample unit, filter unit, AD conversion unit, modulating unit, demodulating unit and D/A conversion unit, described speech sample unit, filter unit, AD conversion unit are connected successively with modulating unit, and described demodulating unit is connected with described D/A conversion unit;
Be arranged at second anti-interference equipment in the elevator(lift) machine room, described second anti-interference equipment comprises speech sample unit, filter unit, AD conversion unit, modulating unit, demodulating unit and the D/A conversion unit that connects successively, described speech sample unit, filter unit, AD conversion unit are connected successively with modulating unit, and described demodulating unit is connected with described D/A conversion unit;
Speech sample unit in described first anti-interference equipment is connected with the pick-up in the lift car, D/A conversion unit is connected with loud speaker in the lift car, speech sample unit in described second anti-interference equipment is connected with the pick-up in the elevator(lift) machine room, D/A conversion unit is connected with loud speaker in the elevator(lift) machine room, and the demodulating unit in the modulating unit in described first anti-interference equipment and described second anti-interference equipment is connected by the trailing cable of elevator, and the modulating unit in the demodulating unit in described first anti-interference equipment and described second anti-interference equipment is connected by the trailing cable of elevator.
A kind of elevator speech talkback system comprises:
Be arranged at first anti-interference equipment in the lift car, described first anti-interference equipment comprises pick-up, speech sample unit, filter unit, AD conversion unit, modulating unit, demodulating unit, D/A conversion unit and loud speaker, described pick-up, speech sample unit, filter unit, AD conversion unit are connected successively with modulating unit, and described demodulating unit, D/A conversion unit and loud speaker are connected successively;
Be arranged at second anti-interference equipment in the elevator(lift) machine room, described second anti-interference equipment comprises pick-up, speech sample unit, filter unit, AD conversion unit, modulating unit, demodulating unit, D/A conversion unit and loud speaker, described pick-up, speech sample unit, filter unit, AD conversion unit are connected successively with modulating unit, and described demodulating unit, D/A conversion unit and loud speaker are connected successively;
Demodulating unit in modulating unit in described first anti-interference equipment and described second anti-interference equipment is connected by the trailing cable of elevator, and the demodulating unit in described first anti-interference equipment is connected by described trailing cable with modulating unit in described second anti-interference equipment.
This shows, in the above-mentioned disclosed elevator speech talkback of the present invention system, adopt the existing trailing cable of elevator as signal transmission medium, do not need to lay analog of telephone line, reduced system cost; In addition, among the present invention voice signal waiting for transmission is converted to digital signal, what transmit in trailing cable is the modulated signal of utilizing the digital signal modulated carrier to obtain, to obtaining digital signal after the modulated signal demodulation, the interference free performance of digital signal is higher, and in demodulating process, be difficult for distortion, can improve sound effect.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of elevator speech talkback disclosed by the invention system;
Fig. 2 is the structural representation of another kind of elevator speech talkback disclosed by the invention system;
Fig. 3 is the structural representation of another kind of elevator speech talkback disclosed by the invention system;
Fig. 4 is the structural representation of another kind of elevator speech talkback disclosed by the invention system;
Fig. 5 is the structural representation of another kind of elevator speech talkback disclosed by the invention system;
Fig. 6 is the structural representation of another kind of elevator speech talkback disclosed by the invention system.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The invention discloses a kind of elevator speech talkback system, this system has good antijamming capability and sound effect, and effectively reduces system cost.
Referring to Fig. 1, Fig. 1 is the structural representation of a kind of elevator speech talkback disclosed by the invention system.
This system comprises: be arranged at first anti-interference equipment 1 in the lift car, be arranged at second anti-interference equipment 2 in the elevator(lift) machine room; The elevator trailing cable 3 that connects first anti-interference equipment 1 and second anti-interference equipment 2.
Wherein, first anti-interference equipment 1 comprises speech sample unit 11, filter unit 12, AD conversion unit 13, modulating unit 14, demodulating unit 15 and D/A conversion unit 16.Second anti-interference equipment 2 comprises speech sample unit 21, filter unit 22, AD conversion unit 23, modulating unit 24, demodulating unit 25 and D/A conversion unit 26.
The trailing cable 3 of elevator comprises power line, connection and video monitoring line at present.Power line is used for providing operation essential electric power to elevator, connection is used for to the elevator transmission of control signals, according to national regulation, in the elevator watch-dog will be set, the video monitoring line will be set accordingly come transmission video signal, and the video monitoring line adopts coaxial cable more.
Running to above-mentioned elevator speech talkback system describes below.
The voice signal that pick-up 41 in the lift car is gathered in the lift car; The voice signal of the 11 pairs of pick-ups in the speech sample unit in first anti-interference equipment 1,41 outputs carries out sampling processing; Carry out filtering by the voice signal after 12 pairs of samplings of filter unit and handle interference signals such as filter out noise; 13 pairs of filtered voice signals of AD conversion unit carry out analog-to-digital conversion afterwards, obtain digital signal; Modulating unit 14 utilizes the digital signal of AD conversion unit 13 outputs that carrier wave is modulated, and concrete can load on digital signal on the carrier wave for amplitude-shift keying modulation, frequency shift keying modulation or phase shift keying modulation; The modulated signal that modulating unit 14 produces is transmitted to second anti-interference equipment 2 by trailing cable 3; Demodulating unit 25 in second anti-interference equipment 2 receives modulated signal, and it is carried out demodulation, obtains digital signal; 26 pairs of digital signals that demodulate of D/A conversion unit are carried out digital-to-analogue conversion afterwards, and acquisition voice signal and the loud speaker 52 in elevator(lift) machine room transmit; By loud speaker 52 these voice signals of output.
The voice signal that pick-up 51 in the elevator(lift) machine room is gathered in the elevator(lift) machine room; The voice signal of the 21 pairs of pick-ups in the speech sample unit in second anti-interference equipment 2,51 outputs carries out sampling processing; Carry out filtering by the voice signal after 22 pairs of samplings of filter unit and handle interference signals such as filter out noise; 23 pairs of filtered voice signals of AD conversion unit carry out analog-to-digital conversion afterwards, obtain digital signal; Modulating unit 24 utilizes the digital signal of AD conversion unit 23 outputs that carrier wave is modulated, and concrete can load on digital signal on the carrier wave for amplitude-shift keying modulation, frequency shift keying modulation or phase shift keying modulation; The modulated signal that modulating unit 24 produces is transmitted to first anti-interference equipment 1 by trailing cable 3; Demodulating unit 15 in first anti-interference equipment 1 receives modulated signal, and it is carried out demodulation, obtains digital signal; 16 pairs of digital signals that demodulate of D/A conversion unit are carried out digital-to-analogue conversion afterwards, and acquisition voice signal and the loud speaker 42 in lift car transmit; By loud speaker 42 these voice signals of output.
In the above-mentioned disclosed elevator speech talkback of the present invention system, adopt the existing trailing cable of elevator as signal transmission medium, do not need to lay telephone wire in addition, reduced system cost; In addition, among the present invention voice signal waiting for transmission is converted to digital signal, what transmit in trailing cable is the modulated signal of utilizing the digital signal modulated carrier to obtain, to obtaining digital signal after the modulated signal demodulation, the interference free performance of digital signal is higher, and in demodulating process, be difficult for distortion, can improve sound effect.
In force, the demodulating unit 25 in the modulating unit 14 in first anti-interference equipment 1 and second anti-interference equipment 2 and the demodulating unit 15 in first anti-interference equipment 1 all can be connected by the video monitoring line with modulating unit 24 in second anti-interference equipment 2.Present video monitoring line mostly is coaxial cable, the video monitoring line is divided into high band and low-frequency range, modulating unit 14 and demodulating unit 25 take a frequency range, demodulating unit 15 and modulating unit 24 take the another one frequency range, only just can realize full-duplex communication between lift car and the elevator(lift) machine room by the video monitoring line.
Referring to Fig. 2, Fig. 2 is the structural representation of another kind of elevator speech talkback disclosed by the invention system.
This system comprises: be arranged at first anti-interference equipment 1 in the lift car, be arranged at second anti-interference equipment 2 in the elevator(lift) machine room; The elevator trailing cable 3 that connects first anti-interference equipment 1 and second anti-interference equipment 2.
First anti-interference equipment 1 not only comprises speech sample unit 11, filter unit 12, AD conversion unit 13, modulating unit 14, demodulating unit 15 and D/A conversion unit 16, also comprise the compression unit 17 that is arranged between AD conversion unit 13 and the modulating unit 14, and be arranged at the decompression unit 18 between demodulating unit 15 and the D/A conversion unit 16.
Second anti-interference equipment 2 not only comprises speech sample unit 21, filter unit 22, AD conversion unit 23, modulating unit 24, demodulating unit 25 and D/A conversion unit 26, also comprise the decompression unit 27 that is arranged between demodulating unit 25 and the D/A conversion unit 26, and be arranged at the compression unit 28 between AD conversion unit 23 and the modulating unit 24.
The voice signal of lift car is transferred in the process of elevator(lift) machine room, the digital signal of AD conversion unit 13 outputs in first anti-interference equipment 1 will be through the processing of compression unit 17, the data capacity of reduction transmission, modulating unit 14 utilizes the digital signal after compressing that carrier wave is modulated afterwards; Accordingly, demodulating unit 24 in second anti-interference equipment 2 receives after the modulated signal, it is carried out digital signal after demodulation obtains compression, and decompression unit 27 decompresses to it afterwards, and the digital signal after will being decompressed by D/A conversion unit 26 is converted to voice signal.
The voice signal of elevator(lift) machine room is transferred in the process of lift car, the digital signal of AD conversion unit 23 outputs in second anti-interference equipment 2 will be through the processing of compression unit 28, the data capacity of reduction transmission, modulating unit 24 utilizes the digital signal after compressing that carrier wave is modulated afterwards; Accordingly, demodulating unit 14 in first anti-interference equipment 1 receives after the modulated signal, it is carried out digital signal after demodulation obtains compression, and decompression unit 18 decompresses to it afterwards, and the digital signal after will being decompressed by D/A conversion unit 16 is converted to voice signal.
In above-mentioned disclosed elevator speech talkback system, by digital signal is compressed processing, can reduce data quantity transmitted, reduce the requirement to the trailing cable bandwidth.
Referring to Fig. 3, Fig. 3 is the structural representation of another kind of elevator speech talkback disclosed by the invention system.
This system comprises: be arranged at first anti-interference equipment 1 in the lift car, be arranged at second anti-interference equipment 2 in the elevator(lift) machine room; The elevator trailing cable 3 that connects first anti-interference equipment 1 and second anti-interference equipment 2.
The structure of first anti-interference equipment 1 can be as shown in Fig. 1 or Fig. 2.
Second anti-interference equipment 2 not only comprises speech sample unit 21, filter unit 22, AD conversion unit 23, modulating unit 24, demodulating unit 25, D/A conversion unit 26, decompression unit 27 and decompression unit 28, also comprise netting twine port 29, this netting twine port 29 is connected with demodulating unit 25 with modulating unit 24 simultaneously.
The Surveillance center that is positioned at far-end can be connected to this netting twine port 29 by Ethernet, long-range voice messaging to lift car transmitting voice information or long-range reception lift car.
The long-range detailed process to the lift car transmitting voice information of Surveillance center is: the voice messaging that Surveillance center will transmit is treated to digital signal, afterwards by Ethernet with digital data transmission to netting twine port 29, the modulating unit 24 that is connected with netting twine port 29 obtains this digital signal, utilize this digital signal that carrier wave is modulated afterwards, and modulated signal is transferred to trailing cable 3; The processing procedure of 1 pair of modulated signal of first anti-interference equipment is consistent with the processing procedure in the aforementioned system, does not repeat them here.
The detailed process of the voice messaging of the long-range reception lift car of Surveillance center is: 25 pairs of modulated signals that receive of demodulating unit are carried out demodulation, obtain the digital signal of compression back or uncompressed, Surveillance center can pass through this netting twine port 29 of Ethernet remote access, obtaining this digital signal, is voice signal with this Digital Signal Processing afterwards.
In the disclosed elevator speech talkback of Fig. 3 system, by in second anti-interference equipment 2, netting twine port 29 being set, can realize the full duplex intercommunication between Surveillance center and the lift car.
In above-mentioned disclosed each elevator speech talkback system, be applicable in the lift car and elevator(lift) machine room with pick-up and loud speaker, can improve existing elevator intercom system.At the elevator that the speech talkback system is not set, the invention also discloses a kind of elevator speech talkback system.
Referring to Fig. 4, Fig. 4 is the structural representation of another kind of elevator speech talkback disclosed by the invention system.
This system comprises: be arranged at first anti-interference equipment 1 in the lift car, be arranged at second anti-interference equipment 2 in the elevator(lift) machine room; The elevator trailing cable 3 that connects first anti-interference equipment 1 and second anti-interference equipment 2.
Wherein, first anti-interference equipment 1 comprises pick-up 11, speech sample unit 12, filter unit 13, AD conversion unit 14, modulating unit 15, demodulating unit 16, D/A conversion unit 17 and loud speaker 18.Second anti-interference equipment 2 comprises pick-up 21, speech sample unit 22, filter unit 23, AD conversion unit 24, modulating unit 25, demodulating unit 26, D/A conversion unit 27 and loud speaker 28.
Pick-up 11 in first anti-interference equipment 1, speech sample unit 12, filter unit 13, AD conversion unit 14 and modulating unit 15 are connected successively, and demodulating unit 16, D/A conversion unit 17 and loud speaker 18 are connected successively; Pick-up 21 in second anti-interference equipment 2, speech sample unit 22, filter unit 23, AD conversion unit 24 and modulating unit 25 are connected successively, and demodulating unit 26, D/A conversion unit 27 and loud speaker 28 are connected successively; And the demodulating unit 26 in the modulating unit 15 in first anti-interference equipment 1 and second anti-interference equipment 2 is connected by the trailing cable 3 of elevator, and the modulating unit 25 in the demodulating unit 16 in first anti-interference equipment 1 and second anti-interference equipment 2 is connected by the trailing cable 3 of elevator.
The trailing cable 3 of elevator comprises power line, connection and video monitoring line at present.Power line is used for providing operation essential electric power to elevator, connection is used for to the elevator transmission of control signals, according to national regulation, in the elevator watch-dog will be set, the video monitoring line will be set accordingly come transmission video signal, and the video monitoring line adopts coaxial cable more.
Running to above-mentioned elevator speech talkback system describes below.
The voice signal that pick-up 11 in first anti-interference equipment 1 is gathered in the lift car; The voice signal of the 12 pairs of pick-ups in speech sample unit, 11 outputs carries out sampling processing; Carry out filtering by the voice signal after 13 pairs of samplings of filter unit and handle interference signals such as filter out noise; 14 pairs of filtered voice signals of AD conversion unit carry out analog-to-digital conversion afterwards, obtain digital signal; Modulating unit 15 utilizes the digital signal of AD conversion unit output that carrier wave is modulated, and concrete can load on digital signal on the carrier wave for amplitude-shift keying modulation, frequency shift keying modulation or phase shift keying modulation; The modulated signal that modulating unit 15 produces is transmitted to second anti-interference equipment 2 by trailing cable 3; Demodulating unit 26 in second anti-interference equipment 2 receives modulated signal, and it is carried out demodulation, obtains digital signal; 27 pairs of digital signals that demodulate of D/A conversion unit are carried out digital-to-analogue conversion afterwards, obtain voice signal and to loud speaker 28 transmission; By loud speaker 28 these voice signals of output.
The voice signal that pick-up 21 in second anti-interference equipment 2 is gathered in the elevator(lift) machine room; The voice signal of the 22 pairs of pick-ups in speech sample unit, 21 outputs carries out sampling processing; Carry out filtering by the voice signal after 23 pairs of samplings of filter unit and handle interference signals such as filter out noise; 24 pairs of filtered voice signals of AD conversion unit carry out analog-to-digital conversion afterwards, obtain digital signal; Modulating unit 25 utilizes the digital signal of AD conversion unit output that carrier wave is modulated, and concrete can load on digital signal on the carrier wave for amplitude-shift keying modulation, frequency shift keying modulation or phase shift keying modulation; The modulated signal that modulating unit 25 produces is transmitted to first anti-interference equipment 1 by trailing cable 3; Demodulating unit 16 in first anti-interference equipment 1 receives modulated signal, and it is carried out demodulation, obtains digital signal; 17 pairs of digital signals that demodulate of D/A conversion unit are carried out digital-to-analogue conversion afterwards, obtain voice signal and to loud speaker 18 transmission; By loud speaker 18 these voice signals of output.
In the above-mentioned disclosed elevator speech talkback of the present invention system, adopt the existing trailing cable of elevator as signal transmission medium, do not need to lay telephone wire in addition, reduced system cost; In addition, among the present invention voice signal waiting for transmission is converted to digital signal, what transmit in trailing cable is the modulated signal of utilizing the digital signal modulated carrier to obtain, to obtaining digital signal after the modulated signal demodulation, the interference free performance of digital signal is higher, and in demodulating process, be difficult for distortion, can improve sound effect.
In force, the demodulating unit 26 in the modulating unit 15 in first anti-interference equipment 1 and second anti-interference equipment 2 and the demodulating unit 16 in first anti-interference equipment 1 all can be connected by the video monitoring line with modulating unit 25 in second anti-interference equipment 2.Present video monitoring line mostly is coaxial cable, the video monitoring line is divided into high band and low-frequency range, modulating unit 15 and demodulating unit 26 take a frequency range, demodulating unit 16 and modulating unit 25 take the another one frequency range, only just can realize full-duplex communication between lift car and the elevator(lift) machine room by the video monitoring line.
Referring to Fig. 5, Fig. 5 is the structural representation of another kind of elevator speech talkback disclosed by the invention system.
This system comprises: be arranged at first anti-interference equipment 1 in the lift car, be arranged at second anti-interference equipment 2 in the elevator(lift) machine room; The elevator trailing cable 3 that connects first anti-interference equipment 1 and second anti-interference equipment 2.
First anti-interference equipment 1 not only comprises pick-up 11, speech sample unit 12, filter unit 13, AD conversion unit 14, modulating unit 15, demodulating unit 16, D/A conversion unit 17 and loud speaker 18, also comprise the compression unit 19 that is arranged between AD conversion unit 14 and the modulating unit 15, and be arranged at the decompression unit 110 between demodulating unit 16 and the D/A conversion unit 17.
The voice signal of lift car is transferred in the process of elevator(lift) machine room, the digital signal of AD conversion unit 14 outputs in first anti-interference equipment 1 will be through the processing of compression unit 19, the data capacity of reduction transmission, modulating unit 15 utilizes the digital signal after compressing that carrier wave is modulated afterwards; Accordingly, demodulating unit 26 in second anti-interference equipment 2 receives after the modulated signal, it is carried out digital signal after demodulation obtains compression, and decompression unit 29 decompresses to it afterwards, and the digital signal after will being decompressed by D/A conversion unit 27 is converted to voice signal.
The voice signal of elevator(lift) machine room is transferred in the process of lift car, the digital signal of AD conversion unit 24 outputs in second anti-interference equipment 2 will be through the processing of compression unit 29, the data capacity of reduction transmission, modulating unit 25 utilizes the digital signal after compressing that carrier wave is modulated afterwards; Accordingly, demodulating unit 16 in first anti-interference equipment 1 receives after the modulated signal, it is carried out digital signal after demodulation obtains compression, and decompression unit 110 decompresses to it afterwards, and the digital signal after will being decompressed by D/A conversion unit 17 is converted to voice signal.
In above-mentioned disclosed elevator speech talkback system, by digital signal is compressed processing, can reduce data quantity transmitted, reduce the requirement to the trailing cable bandwidth.
Referring to Fig. 6, Fig. 6 is the structural representation of another kind of elevator speech talkback disclosed by the invention system.
This system comprises: be arranged at first anti-interference equipment 1 in the lift car, be arranged at second anti-interference equipment 2 in the elevator(lift) machine room; The elevator trailing cable 3 that connects first anti-interference equipment 1 and second anti-interference equipment 2.
The structure of first anti-interference equipment 1 can be as shown in Fig. 4 or Fig. 5.
The Surveillance center that is positioned at far-end can be connected to this netting twine port 211 by Ethernet, long-range voice messaging to lift car transmitting voice information or long-range reception lift car.
The long-range detailed process to the lift car transmitting voice information of Surveillance center is: the voice messaging that Surveillance center will transmit is treated to digital signal, afterwards by Ethernet with digital data transmission to netting twine port 211, the modulating unit 25 that is connected with netting twine port 211 obtains this digital signal, utilize this digital signal that carrier wave is modulated afterwards, and modulated signal is transferred to trailing cable 3; The processing procedure of 1 pair of modulated signal of first anti-interference equipment is consistent with the processing procedure in the aforementioned system, does not repeat them here.
The detailed process of the voice messaging of the long-range reception lift car of Surveillance center is: 26 pairs of modulated signals that receive of demodulating unit are carried out demodulation, obtain the digital signal of compression back or uncompressed, Surveillance center can pass through this netting twine port 211 of Ethernet remote access, obtaining this digital signal, is voice signal with this Digital Signal Processing afterwards.
In the disclosed elevator speech talkback of Fig. 6 system, by in second anti-interference equipment 2, netting twine port 211 being set, can realize the full duplex intercommunication between Surveillance center and the lift car.
Need to prove, the AD conversion unit and the D/A conversion unit that relate in above-mentioned each system, both can be general analog to digital converter and digital to analog converter, also can be to install specific software by auxiliary computing devices such as computers to carry out the software module that signal is handled.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments herein.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the wideest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. an elevator speech talkback system is characterized in that, comprising:
Be arranged at first anti-interference equipment in the lift car, described first anti-interference equipment comprises speech sample unit, filter unit, AD conversion unit, modulating unit, demodulating unit and D/A conversion unit, described speech sample unit, filter unit, AD conversion unit are connected successively with modulating unit, and described demodulating unit is connected with described D/A conversion unit;
Be arranged at second anti-interference equipment in the elevator(lift) machine room, described second anti-interference equipment comprises speech sample unit, filter unit, AD conversion unit, modulating unit, demodulating unit and the D/A conversion unit that connects successively, described speech sample unit, filter unit, AD conversion unit are connected successively with modulating unit, and described demodulating unit is connected with described D/A conversion unit;
Speech sample unit in described first anti-interference equipment is connected with the pick-up in the lift car, D/A conversion unit is connected with loud speaker in the lift car, speech sample unit in described second anti-interference equipment is connected with the pick-up in the elevator(lift) machine room, D/A conversion unit is connected with loud speaker in the elevator(lift) machine room, and the modulating unit in described first anti-interference equipment is connected by the video monitoring line in the trailing cable of elevator with demodulating unit in described second anti-interference equipment, and the demodulating unit in described first anti-interference equipment is connected by the video monitoring line in the trailing cable of elevator with modulating unit in described second anti-interference equipment;
Wherein, modulating unit in described first anti-interference equipment utilizes the digital signal of AD conversion unit output that carrier wave is modulated, digital signal is loaded on the carrier wave, and the modulated signal that the modulating unit in described first anti-interference equipment produces is by described second anti-interference equipment transmission of the video monitoring alignment in the trailing cable; Demodulating unit in described second anti-interference equipment receives the modulated signal that the modulating unit in described first anti-interference equipment produces, and it is carried out demodulation, obtains digital signal;
Modulating unit in described second anti-interference equipment utilizes the digital signal of AD conversion unit output that carrier wave is modulated, and digital signal is loaded on the carrier wave; The modulated signal that modulating unit in the described second anti-dried equipment produces is by described first anti-interference equipment transmission of the video monitoring alignment in the trailing cable; Demodulating unit in described first anti-interference equipment receives the modulated signal that the modulating unit in the described second anti-dried equipment produces, and it is carried out demodulation, obtains digital signal.
2. elevator speech talkback according to claim 1 system, it is characterized in that, described first anti-interference equipment further comprises: be arranged at the compression unit between described AD conversion unit and the modulating unit, be arranged at the decompression unit between described demodulating unit and the D/A conversion unit; Described second anti-interference equipment further comprises: be arranged at the compression unit between described AD conversion unit and the modulating unit, be arranged at the decompression unit between described demodulating unit and the D/A conversion unit.
3. according to any described elevator speech talkback system in the claim 1 to 2, it is characterized in that described second anti-interference equipment also comprises: the netting twine port that is connected with demodulating unit with described modulating unit respectively.
4. elevator speech talkback according to claim 3 system is characterized in that described netting twine port is connected to the Surveillance center of elevator by Ethernet.
5. an elevator speech talkback system is characterized in that, comprising:
Be arranged at first anti-interference equipment in the lift car, described first anti-interference equipment comprises pick-up, speech sample unit, filter unit, AD conversion unit, modulating unit, demodulating unit, D/A conversion unit and loud speaker, described pick-up, speech sample unit, filter unit, AD conversion unit are connected successively with modulating unit, and described demodulating unit, D/A conversion unit and loud speaker are connected successively;
Be arranged at second anti-interference equipment in the elevator(lift) machine room, described second anti-interference equipment comprises pick-up, speech sample unit, filter unit, AD conversion unit, modulating unit, demodulating unit, D/A conversion unit and loud speaker, described pick-up, speech sample unit, filter unit, AD conversion unit are connected successively with modulating unit, and described demodulating unit, D/A conversion unit and loud speaker are connected successively;
Modulating unit in described first anti-interference equipment is connected by the video monitoring line in the trailing cable of elevator with demodulating unit in described second anti-interference equipment, and the demodulating unit in described first anti-interference equipment is connected by the video monitoring line in the described trailing cable with modulating unit in described second anti-interference equipment;
Wherein, modulating unit in described first anti-interference equipment utilizes the digital signal of AD conversion unit output that carrier wave is modulated, digital signal is loaded on the carrier wave, and the modulated signal that the modulating unit in described first anti-interference equipment produces is by described second anti-interference equipment transmission of the video monitoring alignment in the trailing cable; Demodulating unit in described second anti-interference equipment receives the modulated signal that the modulating unit in described first anti-interference equipment produces, and it is carried out demodulation, obtains digital signal;
Modulating unit in described second anti-interference equipment utilizes the digital signal of AD conversion unit output that carrier wave is modulated, and digital signal is loaded on the carrier wave; The modulated signal that modulating unit in the described second anti-dried equipment produces is by described first anti-interference equipment transmission of the video monitoring alignment in the trailing cable; Demodulating unit in described first anti-interference equipment receives the modulated signal that the modulating unit in the described second anti-dried equipment produces, and it is carried out demodulation, obtains digital signal.
6. elevator speech talkback according to claim 5 system, it is characterized in that, described first anti-interference equipment further comprises: be arranged at the compression unit between described AD conversion unit and the modulating unit, be arranged at the decompression unit between described demodulating unit and the D/A conversion unit; Described second anti-interference equipment further comprises: be arranged at the compression unit between described AD conversion unit and the modulating unit, be arranged at the decompression unit between described demodulating unit and the D/A conversion unit.
7. according to any described elevator speech talkback system in the claim 5 to 6, it is characterized in that described second anti-interference equipment also comprises: the netting twine port that is connected with demodulating unit with described modulating unit respectively.
8. elevator speech talkback according to claim 7 system is characterized in that described netting twine port is connected to the Surveillance center of elevator by Ethernet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110162656 CN102201838B (en) | 2011-06-16 | 2011-06-16 | Elevator voice intercom system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110162656 CN102201838B (en) | 2011-06-16 | 2011-06-16 | Elevator voice intercom system |
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| CN102201838A CN102201838A (en) | 2011-09-28 |
| CN102201838B true CN102201838B (en) | 2013-10-02 |
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| CN103159113B (en) * | 2013-03-21 | 2016-04-27 | 刘婷 | A kind of elevator multimedia system and communication means |
| CN107105192A (en) * | 2016-02-20 | 2017-08-29 | 广州市番禺区西派电子电器厂（普通合伙） | A kind of IP network safety manages monitor |
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| CN201118576Y (en) * | 2007-11-13 | 2008-09-17 | 广州日滨科技发展有限公司 | Elevator voice inter-speaking system |
| CN201292185Y (en) * | 2008-08-21 | 2009-08-19 | 广州日滨科技发展有限公司 | Novel elevator communication system |
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| CN202143186U (en) * | 2011-06-16 | 2012-02-08 | 无锡英威腾德仕卡勒科技有限公司 | Voice intercom system for elevator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201118576Y (en) * | 2007-11-13 | 2008-09-17 | 广州日滨科技发展有限公司 | Elevator voice inter-speaking system |
| CN201292185Y (en) * | 2008-08-21 | 2009-08-19 | 广州日滨科技发展有限公司 | Novel elevator communication system |
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Owner name: WUXI INVT ELEVATOR CONTROL TECHNOLOGY CO., LTD. Free format text: FORMER NAME: INVT DISCOVERY TECHNOLOGY (WUXI) CO., LTD. |
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Address after: 214000 89-2, 201, 202, 301, 302 and 401, No. four, No. 1, road, Wuxi, Jiangsu Patentee after: Wuxi INVT Elevator Control Technology Co., Ltd. Address before: 301-309, building 5, building C, creative innovation industrial park, 214000, Wuxi, Xinhua Road, Jiangsu Patentee before: INVT Discovery Technology (Wuxi) Co., Ltd. |
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