CN202121579U - Anti-interference device for elevator voice intercommunication - Google Patents
Anti-interference device for elevator voice intercommunication Download PDFInfo
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- CN202121579U CN202121579U CN2011202039417U CN201120203941U CN202121579U CN 202121579 U CN202121579 U CN 202121579U CN 2011202039417 U CN2011202039417 U CN 2011202039417U CN 201120203941 U CN201120203941 U CN 201120203941U CN 202121579 U CN202121579 U CN 202121579U
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Abstract
Disclosed is an anti-interference device for elevator voice intercommunication, comprising a first assembly arranged inside the elevator car and a second assembly arranged inside the elevator machine room. The anti-interference device transforms the to-be-transmitted voice signals into digital signals and utilizes the digital signals to modulate carrier wave, thus to obtain the modulated signals. Then the modulated signals are transmitted in the simulated telephone line or the accompanying cable of the elevator. Although the modulated signals transmitted in the simulated telephone line or the accompanying cable will experience distortion due to the interference of the elevator shaft, the distortion factor of the demodulated digital signals is very low as the fault-tolerant capability of the digital signals during the demodulating process is very high. Therefore, the distortion factor of the subsequent voice signals obtained via digital analog conversion is very low, thereby being capable of ensuring great voice effect without using special material having high shielding capability to make simulated telephone line or accompanying cable and cutting the cost of the elevator voice intercommunication system.
Description
Technical field
The utility model belongs to the elevator technology field, relates in particular to a kind of elevator speech talkback anti-interference equipment.
Background technology
According to the mandatory provisions of national standard, every elevator must be equipped with a cover voice intercom system, guarantees the conversation between lift car, elevator(lift) machine room and the Surveillance center.
Existing elevator speech talkback system mainly comprises two kinds: one, between lift car and elevator(lift) machine room, and lay analog of telephone line between elevator(lift) machine room and the Surveillance center respectively, realize intercommunication function through analog of telephone line transferring voice analog signal; Two, only between elevator(lift) machine room and Surveillance center, lay analog of telephone line; Pass through the trailing cable transferring voice analog signal of elevator between lift car and the elevator(lift) machine room; Analog of telephone line transferring voice analog signal through laying between elevator(lift) machine room and the Surveillance center realizes intercommunication function with this.
But there is defective in existing elevator speech talkback system: elevator hoistways belongs to special airtight place, and its interference is big, very easily receives external interference in the process that voice analog signal transmits and distortion influences sound effect between lift car and elevator(lift) machine room; For better sound effect is provided, must adopt special substance to come the trailing cable of manufacturing and simulating telephone wire or elevator with high screening ability, this causes the system cost of elevator speech talkback system to increase substantially.Therefore, how to guarantee the sound effect of elevator speech talkback system, and the cost of reduction elevator speech talkback system is the technical problem that those skilled in the art press for solution.
The utility model content
In view of this, the purpose of the utility model is to provide a kind of elevator speech talkback anti-interference equipment, can in the sound effect that guarantees elevator speech talkback system, reduce the system cost of elevator speech talkback system.
For realizing above-mentioned purpose, the utility model provides following technical scheme:
A kind of elevator speech talkback anti-interference equipment; Be applied to elevator speech talkback system; Said elevator speech talkback system comprises the analog of telephone line that is arranged between lift car and elevator(lift) machine room and elevator(lift) machine room and the Surveillance center, and said elevator speech talkback anti-interference equipment comprises:
Be arranged at first assembly in the lift car; Said first assembly comprises speech sample unit, filter unit, AD conversion unit, modulating unit, demodulating unit and D/A conversion unit; Said speech sample unit, filter unit, AD conversion unit are connected with modulating unit successively, and said demodulating unit is connected with said D/A conversion unit;
Be arranged at second assembly in the elevator(lift) machine room; Said second assembly comprises speech sample unit, filter unit, AD conversion unit, modulating unit, demodulating unit and the D/A conversion unit that connects successively; Said speech sample unit, filter unit, AD conversion unit are connected with modulating unit successively, and said demodulating unit is connected with said D/A conversion unit;
Speech sample unit in said first assembly 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 said second assembly 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 said first assembly and said second assembly is connected through analog of telephone line or the trailing cable of elevator that is arranged between said lift car and the elevator(lift) machine room, and the modulating unit in the demodulating unit in said first assembly and said second assembly is connected through analog of telephone line or the trailing cable of elevator that is arranged between said lift car and the elevator(lift) machine room.
Preferably, in above-mentioned elevator speech talkback anti-interference equipment, said first assembly also comprises: be arranged at the compression unit between said AD conversion unit and the modulating unit, be arranged at the decompression unit between said demodulating unit and the D/A conversion unit; Said second assembly also comprises: be arranged at the compression unit between said AD conversion unit and the modulating unit, be arranged at the decompression unit between said demodulating unit and the D/A conversion unit.
Preferably, in above-mentioned elevator speech talkback anti-interference equipment, said second assembly also comprises: the netting twine port that is connected with demodulating unit with said modulating unit respectively.
Preferably, in above-mentioned elevator speech talkback anti-interference equipment, said netting twine port is connected to the Surveillance center of elevator through Ethernet.
This shows; The disclosed elevator speech talkback of the utility model anti-interference equipment converts voice signal waiting for transmission into digital signal, and utilizes digital signal that carrier wave is modulated the acquisition modulated signal; In the trailing cable of analog of telephone line or elevator, transmit this modulated signal afterwards; Though the modulated signal of in analog of telephone line or trailing cable, transmitting can receive the interference generation distortion phenomenon of elevator hoistways,, make that the digital signal distortion factor that demodulates is very little because the fault-tolerant ability of digital signal in demodulating process is higher; So the distortion factor of the follow-up voice signal that obtains through digital-to-analogue conversion is very little; Can guarantee good sound effect, and need not to use special substance manufacturing and simulating telephone wire or trailing cable, reduce the system cost of elevator speech talkback system with high screening ability.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment 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; Obviously, the accompanying drawing in describing below is some embodiment of the utility model, 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 the disclosed a kind of elevator speech talkback anti-interference equipment of the utility model;
Fig. 2 is the structural representation of the disclosed another kind of elevator speech talkback anti-interference equipment of the utility model;
Fig. 3 is the structural representation of the disclosed another kind of elevator speech talkback anti-interference equipment of the utility model.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model embodiment clearer; To combine the accompanying drawing among the utility model embodiment below; Technical scheme among the utility model embodiment is carried out clear, intactly description; Obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model discloses a kind of elevator speech talkback anti-interference equipment, can in the sound effect that guarantees elevator speech talkback system, reduce the system cost of elevator speech talkback system.
Referring to Fig. 1, Fig. 1 is the structural representation of the disclosed a kind of elevator speech talkback anti-interference equipment of the utility model.This anti-interference equipment comprises: be arranged at first assembly 1 in the lift car and be arranged at second assembly 2 in the elevator(lift) machine room.
Wherein, first assembly 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 assembly 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 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.
In the process that existing speech talkback system is transformed; If (every analog of telephone line, power line and connection can be considered a transmission channel between lift car and elevator(lift) machine room, to comprise two transmission channels; The video monitoring line that adopts coaxial cable to make can be divided into high band and low-frequency range; Wherein high band and low-frequency range all can be considered a transmission channel); Promptly between the loud speaker 52 of the pick-up 41 of lift car and elevator(lift) machine room, first transmission channel is set; Simultaneously between the pick-up 51 of the loud speaker 42 of lift car and elevator(lift) machine room, second transmission channel is set, at this moment, the modulating unit 14 in first assembly 1 is connected through first transmission channel with demodulating unit 25 in second assembly 2; Demodulating unit 15 in first assembly 1 is connected through second transmission channel with modulating unit 24 in second assembly 2, can between lift car and elevator(lift) machine room, carry out full-duplex communication; If between lift car and elevator(lift) machine room, only comprise a transmission channel; At this moment; Demodulating unit 25 in modulating unit 14 in first assembly 1 and second assembly 2 and the demodulating unit 15 in first assembly 1 all are connected through this transmission channel with modulating unit 24 in second assembly 2, can between lift car and elevator(lift) machine room, carry out half-duplex operation.
The running of facing the elevator speech talkback system that comprises elevator speech talkback anti-interference equipment shown in Figure 1 down describes.
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 assembly 1,41 outputs carries out sampling processing; Voice signal by after 12 pairs of samplings of filter unit carries out Filtering Processing, 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 assembly 2 through analog of telephone line or trailing cable 3; Demodulating unit 25 in second assembly 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, obtain voice signal and 52 transmission of the loud speaker in elevator(lift) machine room; 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 assembly 2,51 outputs carries out sampling processing; Voice signal by after 22 pairs of samplings of filter unit carries out Filtering Processing, 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 assembly 1 through analog of telephone line or trailing cable 3; Demodulating unit 15 in first assembly 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, obtain voice signal and 42 transmission of the loud speaker in lift car; By loud speaker 42 these voice signals of output.
The above-mentioned disclosed elevator speech talkback anti-interference equipment of the utility model; Convert voice signal waiting for transmission into digital signal; And utilize digital signal that carrier wave is modulated the acquisition modulated signal, in analog of telephone line or trailing cable 3, transmit this modulated signal afterwards, though the modulated signal of in analog of telephone line or trailing cable 3, transmitting can receive the interference generation distortion phenomenon of elevator hoistways; But because the fault-tolerant ability of digital signal in demodulating process is higher; Make that the digital signal distortion factor demodulate is very little,, can guarantee good sound effect so the distortion factor of the follow-up voice signal that obtains through digital-to-analogue conversion is very little; And need not to use special substance manufacturing and simulating telephone wire or trailing cable 3 with high screening ability, reduced the system cost of elevator speech talkback system.
Referring to Fig. 2, Fig. 2 is the structural representation of the disclosed another kind of elevator speech talkback anti-interference equipment of the utility model.This anti-interference equipment comprises: be arranged at first assembly 1 in the lift car and be arranged at second assembly 2 in the elevator(lift) machine room.
First assembly 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.
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 assembly 1 will be passed 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 assembly 2 receives after the modulated signal; It is carried out the 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 converts voice signal into.
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 assembly 2 will be passed 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 assembly 1 receives after the modulated signal; It is carried out the 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 converts voice signal into.
Disclosed elevator speech talkback anti-interference equipment through digital signal is carried out processed compressed, can reduce data quantity transmitted in the speech talkback process among Fig. 2, reduces the requirement to analog of telephone line or trailing cable 3 bandwidth.
Referring to Fig. 3, Fig. 3 is the structural representation of the disclosed another kind of elevator speech talkback anti-interference equipment of the utility model.This anti-interference equipment comprises: be arranged at first assembly 1 in the lift car and be arranged at second assembly 2 in the elevator(lift) machine room.
The structure of first assembly 1 can be shown in Fig. 1 or Fig. 2.
The Surveillance center of elevator can be connected to this netting twine port 29 through 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; Pass through Ethernet afterwards 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 analog of telephone line 3; The processing procedure of 1 pair of modulated signal of first assembly is consistent with the processing procedure in the aforementioned system, repeats no more at this.
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.
Disclosed elevator speech talkback anti-interference equipment among Fig. 3; Through in second assembly 2, netting twine port 29 being set; Can realize the speech talkback between Surveillance center and the lift car; And owing to Surveillance center is connected with second assembly 2 through Ethernet, so Surveillance center can be arranged at any zone.
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 the software module of carrying out signal processing through the specific software of auxiliary computing devices such as computer installing.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all 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 utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the utility model or scope in other embodiments among this paper.Therefore, the utility model will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (4)
1. an elevator speech talkback anti-interference equipment is applied to elevator speech talkback system, it is characterized in that, said elevator speech talkback anti-interference equipment comprises:
Be arranged at first assembly in the said lift car; Said first assembly comprises speech sample unit, filter unit, AD conversion unit, modulating unit, demodulating unit and D/A conversion unit; Said speech sample unit, filter unit, AD conversion unit are connected with modulating unit successively, and said demodulating unit is connected with said D/A conversion unit;
Be arranged at second assembly in the said elevator(lift) machine room; Said second assembly comprises speech sample unit, filter unit, AD conversion unit, modulating unit, demodulating unit and the D/A conversion unit that connects successively; Said speech sample unit, filter unit, AD conversion unit are connected with modulating unit successively, and said demodulating unit is connected with said D/A conversion unit;
Speech sample unit in said first assembly is connected with pick-up in the said lift car, D/A conversion unit is connected with loud speaker in the said lift car; Speech sample unit in said second assembly is connected with pick-up in the said elevator(lift) machine room, D/A conversion unit is connected with loud speaker in the said elevator(lift) machine room; And the demodulating unit in the modulating unit in said first assembly and said second assembly is connected through analog of telephone line or the trailing cable of elevator that is arranged between said lift car and the elevator(lift) machine room, and the modulating unit in the demodulating unit in said first assembly and said second assembly is connected through analog of telephone line or the trailing cable of elevator that is arranged between said lift car and the elevator(lift) machine room.
2. elevator speech talkback anti-interference equipment according to claim 1; It is characterized in that; Said first assembly also comprises: be arranged at the compression unit between said AD conversion unit and the modulating unit, be arranged at the decompression unit between said demodulating unit and the D/A conversion unit; Said second assembly also comprises: be arranged at the compression unit between said AD conversion unit and the modulating unit, be arranged at the decompression unit between said demodulating unit and the D/A conversion unit.
3. elevator speech talkback anti-interference equipment according to claim 1 and 2 is characterized in that, said second assembly also comprises: the netting twine port that is connected with demodulating unit with said modulating unit respectively.
4. elevator speech talkback anti-interference equipment according to claim 3 is characterized in that said netting twine port is connected to the Surveillance center of elevator through Ethernet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202039417U CN202121579U (en) | 2011-06-16 | 2011-06-16 | Anti-interference device for elevator voice intercommunication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202039417U CN202121579U (en) | 2011-06-16 | 2011-06-16 | Anti-interference device for elevator voice intercommunication |
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| Publication Number | Publication Date |
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| CN202121579U true CN202121579U (en) | 2012-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202039417U Expired - Fee Related CN202121579U (en) | 2011-06-16 | 2011-06-16 | Anti-interference device for elevator voice intercommunication |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110779A (en) * | 2013-10-22 | 2014-10-22 | 广东美的制冷设备有限公司 | Voice air conditioner, control method thereof and air conditioner control system |
| CN108429570A (en) * | 2018-03-14 | 2018-08-21 | 广州科坦电子技术有限公司 | A kind of five side's intercom system of numerical model analysis |
| CN112299169A (en) * | 2020-10-26 | 2021-02-02 | 日立楼宇技术（广州）有限公司 | Elevator well signal transmission device and elevator |
-
2011
- 2011-06-16 CN CN2011202039417U patent/CN202121579U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110779A (en) * | 2013-10-22 | 2014-10-22 | 广东美的制冷设备有限公司 | Voice air conditioner, control method thereof and air conditioner control system |
| CN108429570A (en) * | 2018-03-14 | 2018-08-21 | 广州科坦电子技术有限公司 | A kind of five side's intercom system of numerical model analysis |
| CN112299169A (en) * | 2020-10-26 | 2021-02-02 | 日立楼宇技术（广州）有限公司 | Elevator well signal transmission device and elevator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: WUXI INVT ELEVATOR CONTROL TECHNOLOGY CO., LTD. Free format text: FORMER NAME: INVT DISCOVERY TECHNOLOGY (WUXI) CO., LTD. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
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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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20200616 |