CN204305149U - A kind of elevator digital speech communication device - Google Patents
A kind of elevator digital speech communication device Download PDFInfo
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- CN204305149U CN204305149U CN201420684958.2U CN201420684958U CN204305149U CN 204305149 U CN204305149 U CN 204305149U CN 201420684958 U CN201420684958 U CN 201420684958U CN 204305149 U CN204305149 U CN 204305149U
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- elevator
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- communication device
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- speech communication
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- Indicating And Signalling Devices For Elevators (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Abstract
The utility model relates to a kind of for being connected to CAN, the elevator digital speech communication device be connected with monitoring host computer communication by CAN, comprise the audio frequency loader, audio process, audio coder, digital signal processor, tone decoder, audio frequency amplifier and the audio output device that connect successively, also comprise CAN interface and provide the electric power loop of electric power for elevator digital speech communication device, described digital signal processor is connected with described CAN interface.Avoided by this elevator digital speech communication device and repeat to set up the problem that the wiring cost brought of connection is high, elevator intercom system speech quality is disturbed, save wiring cost.
Description
Technical field
The utility model relates to elevators field, is particularly useful for the elevator digital speech communication device of the monitoring of elevator, intercom system.
Background technology
The analog machine that the many employings of traditional elevator intercom system are traditional, i.e. interphone terminal output audio signal, directly transfer to the signal input of another terminal, by exporting from loudspeaker after another terminal carries out signal amplification by cable.
As shown in Figure 1, the intercom system of every platform elevator is made up of machine room main frame, car extension set, sedan-chair top extension set, pit extension set respectively.All elevators are at the public monitoring host computer of Control Room, and every platform elevator separate cabling is to monitoring host computer.How many elevators are had then to need cloth how many connections to monitoring host computer.
This mode limits by transmission range, and remote transmission signal loss is very large.Analog signal transmission easily by extraneous wave interference as: during illuminating lamp switch alternating current 220V impact, frequency converter work time electromagnetic interference all can cause the problems such as fuzzy, the muddy and background noise of intercommunication sound is large.And the wiring of the intercom system of prior art needs independently to connect up respectively to the monitoring host computer of every platform elevator to Surveillance center, wiring cost and construction cost increase greatly.
Utility model content
The purpose of this utility model, overcomes the deficiency that wiring cost is high, elevator intercom system speech quality is disturbed exactly, provides one to reduce wiring cost, improves the elevator digital speech transmission device of elevator intercom system speech quality.
In order to achieve the above object, following technical scheme is adopted:
A kind of elevator digital speech communication device, for being connected to CAN, be connected with monitoring host computer communication by CAN, comprise the audio frequency loader, audio process, audio coder, digital signal processor, tone decoder, audio frequency amplifier and the audio output device that connect successively, also comprise CAN interface and provide the electric power loop of electric power for elevator digital speech communication device, described digital signal processor is connected with described CAN interface.
Further, also comprise display interface, it is connected with digital signal processor by serial expansion port.
Further, also comprise ID identity recognizer, it is connected with digital signal processor by serial expansion port, and it is for storing self ID identity information, and identifies the packet comprising self ID identity information in CAN.
Further, also comprise local telephone network call module, it is connected with digital signal processor.
Further, described audio process comprises the resistance R40, adjustable resistance VR1 and the resistance R47 that are sequentially connected in series, described resistance R47 ground connection; Also comprise the isolation coupling electric capacity E8 be connected with adjustable resistance VR1 adjustable side, the operational amplifier TDA2030 that input is connected with isolation coupling electric capacity E8 by resistance R41, electric capacity E10 series connection ground connection, reverse input end in the same way, output exports loudspeaker to by electric capacity E11; Described operational amplifier TDA2030 is also provided with resistance R51 between input and output in the same way; Also comprise biasing circuit, it comprises resistance R48, the resistance R49 of series connection, the resistance R50 of series connection, electric capacity E9, and described resistance R48 is connected to 12V power supply, described resistance R49, electric capacity E9 ground connection, described resistance R50 is connected to the reverse input end of operational amplifier TDA2030.
Further, described CAN interface comprises CAN transceiver and common mode choke LF4, described common mode choke LF4 is connected to CANL end and the CANH end of described CAN transceiver respectively, also comprise the Transient Suppression Diode T3 and electric capacity C40 that are connected in parallel on earth terminal and CANL end, comprise the Transient Suppression Diode T4 and electric capacity C41 that are connected in parallel on earth terminal and CANH end.
Further, described electric power loop comprises pressurizer, filter circuit and current-limiting circuit; Resistance RN1, fuse F1 and diode D1 that described current-limiting circuit bag is connected successively; Described filter circuit comprises common mode choke LF1, is connected in parallel on the electric capacity C13 of common mode choke LF1 one end, is connected in parallel on electric capacity E1 and the electric capacity C14 of the common mode choke LF1 other end; Described current-limiting circuit is linked into the just access pole of common mode choke LF1, and pressurizer is connected with common mode choke LF1 and accesses 24V power supply.
Compared with prior art, the beneficial effects of the utility model are:
The utility model discloses a kind of elevator digital speech communication device based on CAN communication, this device adopts controller local area network communications protocol, audio signal is converted to digital signal, transfers to far-end by CAN, pass through the means such as decoding, DA conversion at far-end to data convert.This system realizes multi signal and realizes noiseless, lossless transmission simultaneously, improves bus utilization and can adapt to different agreement.The communication bus that have shared elevator device of this device, as communication line, solves and repeats to set up the problems such as the wiring cost brought of connection is high, elevator intercom system speech quality is disturbed.
Accompanying drawing explanation
Fig. 1 is the connection diagram of existing elevator intercom system;
Fig. 2 is the connection diagram of the utility model elevator intercom system;
Fig. 3 is the structured flowchart of the utility model elevator digital speech communication device;
Fig. 4 is the circuit diagram of the audio frequency amplifier of the utility model elevator digital speech communication device;
Fig. 5 is the circuit diagram of the CAN interface of the utility model elevator digital speech communication device;
Fig. 6 is the circuit diagram of the electric power loop of the utility model elevator digital speech communication device.
Embodiment
Below in conjunction with specific embodiment, the utility model is described further:
As shown in Figure 2, the elevator digital speech communication device of the present embodiment lays respectively at Surveillance center, elevator(lift) machine room, lift car, elevator car top and pit.The coded address arranging each elevator digital speech communication device by inner parameter just can realize the communication between each terraced digital speech communication device.
As shown in Figure 3, the elevator digital speech communication device of the present embodiment is used for being connected to CAN, is connected with monitoring host computer communication by CAN.It comprises the audio frequency loader 1, audio process 2, audio coder 3, digital signal processor 4, tone decoder 5, audio frequency amplifier 6 and the audio output device 7 that connect successively, also comprises CAN interface 8 and provides the electric power loop 9 of electric power for whole elevator digital speech communication device.Annexation in Fig. 3 between electric power loop 9 and each device no longer draws, and the electric power loop not representing the present embodiment is not connected with any device.Digital signal processor 4 is connected with CAN interface 8, is connected with CAN by CAN interface 8.
In addition, the elevator digital speech communication device of the present embodiment also comprises display interface 11 and ID identity recognizer 12, and display interface 11 is connected with digital signal processor 4 by serial expansion port 10.ID identity recognizer 12 is connected with digital signal processor by serial expansion port, for storing self ID identity information, and in identification CAN, comprise the packet of self ID identity information, namely the coded address of every platform elevator digital speech communication device, can realize the communication between each elevator digital speech communication device by coded address.
Further, also comprise local telephone network call module 13, it is connected with digital signal processor.To be conversed module by local telephone network, the local telephone network call function of elevator digital speech communication device can be realized, realize a tractor serves several purposes, save cost.
As shown in Figure 4, the operation principle of the circuit diagram of the audio frequency amplifier of the utility model elevator digital speech communication device is: audio signal inputs from resistance R40, audio frequency input variable is regulated to deliver to isolation coupling electric capacity E8 front end by resistance VR1, isolation coupling electric capacity E8 isolates alternating current component audio signal and delivers to operational amplifier TDA2030 inverting input, by operational amplifier TDA2030, faint audio signal being amplified, finally exporting loudspeaker to through exporting isolation coupling electric capacity E11.Power supply A12V and resistance R48, resistance R49, resistance R50, electric capacity E9 form biasing circuit, and it can ensure that operational amplifier TDA2030 works in amplification region, and guaranteeing that audio frequency amplifies can not produce distortion.Resistance R51 is negative feedback resistor, and the quiescent point of amplifying circuit can be made to keep stable.
As shown in Figure 5, the circuit diagram operation principle of the CAN interface of the utility model elevator digital speech communication device is that serial data inputs from the front end of common mode choke LF4, entered 6,7 pin of CAN transceiver PCA82C250 by common mode choke LF4, lead to CPU from 1,4 pin of CAN transceiver.Common mode choke inhibits interference, ensures that the data of input transceiver are clean.Transient Suppression Diode T3, T4 effectively prevent the functional module caused because of thunderbolt and surge to lose efficacy.
As shown in Figure 6, the 24V power supply of the circuit diagram of the electric power loop of the utility model elevator digital speech communication device is taken to elevator controlling power supply.By the current-limiting circuit that resistance RN1, fuse F1, diode D1 form.Enter into pressurizer LM2575 by the filter circuit of electric capacity C13, common mode choke LF1, electric capacity E1, electric capacity C14 composition, export 5V from 2 pin of pressurizer.Diode D1 effectively can prevent the device failure caused because of input power reversal connection.The filter circuit of input/output terminal can ensure the degree of purity of input power and obtain more stable out-put supply.
The means of communication of the utility model elevator digital speech communication device are: be positioned at audio signal that local intelligent management interface exports from audio frequency loader 1 and undertaken entering digital signal processor 4 after speech processes and audio coder 3 carry out speech coding by audio process 2.Described audio frequency loader includes but not limited to microphone.The identity information of elevator, signal condition information, running state information by coding composition one group of message code, are delivered to this message code in CAN by CAN interface by digital signal processor.Other CAN interface in CAN obtains code from CAN, digital signal processor is responsible for decoding to code, code reverse is become corresponding audio-frequency signal coding, elevator identity information, signal condition information, running state information, and the information after these reduction is obtained by functional circuit respective on interface respectively.Wherein speech signal coding enters tone decoder 5 decoded back and becomes analog signal, and analog signal is play by audio output device 7 after being amplified by audio frequency amplifier 6.Elevator identity information, signal condition information, running state information are then judged by digital signal processor, analysis, according to the result analyzed by connecting the display display of display interface 11.
Speech data sends: audio process and the digital signal processor of the audio coder of use multi-band excitation AMBE compression coding technology, the pronounciation processing chip of use small array microphone technology form the circuit realizing sound compression coding, decoding, echo control jointly.Voice signal transfers to audio process 2 from microphone input, converts the analog signal of microphone to digital signal.Digital signal is stored in the spatial cache of digital signal processor 4 according to specific rule encoding by audio coder.Digital signal processor is merged into complete elevator management packet by algorithm digital audio encoding and elevator monitoring data encoding, and this packet transmits data to CAN by CAN interface.
Speech data receives: the speech data of far-end is input to digital signal processor 4 by CAN through the CAN interface of other elevator digital speech communication device.Digital signal processor 4 decomposites digital audio encoding and the elevator monitoring data encoding of far-end.Digital audio encoding is stored in the spatial cache of digital signal processor 4.Tone decoder 5 is translated into original coding from this spatial extraction digital audio encoding and is reduced to analog signal and delivers to audio frequency amplifier 6, and the audio signal after amplifying finally is exported by audio output device 8.If do not belonged to the data of this device process then for ignoring data message, this device does not process.
Data Detection: the elevator monitoring data encoding that digital signal processor 4 decomposites, digital signal processor 4 can be analyzed it more further, judges elevator ID, elevator operation, failure condition, the port information belonging to packet.Digital signal processor 4 reveal codes corresponding to information converts to and controls serial expansion port 10 and is driven through display interface 11 driving display information displaying out.
Data distinguish: the elevator digital speech communication device being local CAN communication by ID identity recognizer arranges the unique identity ID in a this locality, this ID is included in the packet of other elevator digital speech communication device coding.When the first elevator digital speech communication device needs and second elevator digital speech communication device communication, the first elevator digital speech communication device will comprise self ID and need the ID of communication in coded data packet.The digital signal processor of the second elevator digital speech communication device judges whether institute's received code packet belongs to it and need process, as needs process then performs respective handling; If judge, packet does not belong to the packet of its process, abandons received data, avoids the confusion of data receiver.
Conveniently can carry out networking to five square tube telephone systems on different elevator by repeater, and participate in networking elevator quantity unrestricted, participate in the elevator of networking or Surveillance center's air line distance can reach 1 kilometer.
The elevator digital speech communication device of the present embodiment has wiring feature simply and easily, the advantage of networking flexibly.Same elevator digital speech communication device can be positioned over Control Room, elevator(lift) machine room, lift car, elevator car top and pit to form elevator five square tube telephone system respectively by arranging different addresses, solves and repeats to set up the problems such as the wiring cost brought of connection is high, elevator intercom system speech quality is disturbed.
The foregoing is only the preferred embodiment explaining the utility model, not any restriction is in form done to the utility model.Any modification of all relevant the utility model of doing under identical utility model spirit or change, all must be included in the category of the utility model intention protection.
Claims (7)
1. an elevator digital speech communication device, for being connected to CAN, be connected with monitoring host computer communication by CAN, it is characterized in that, comprise the audio frequency loader, audio process, audio coder, digital signal processor, tone decoder, audio frequency amplifier and the audio output device that connect successively, also comprise CAN interface and provide the electric power loop of electric power for elevator digital speech communication device, described digital signal processor is connected with described CAN interface.
2. elevator digital speech communication device according to claim 1, it is characterized in that: also comprise display interface, it is connected with digital signal processor by serial expansion port.
3. elevator digital speech communication device according to claim 1 and 2, it is characterized in that: also comprise ID identity recognizer, it is connected with digital signal processor by serial expansion port, it is for storing self ID identity information, and identifies the packet comprising self ID identity information in CAN.
4. elevator digital speech communication device according to claim 1 and 2, is characterized in that: also comprise local telephone network call module, it is connected with digital signal processor.
5. elevator digital speech communication device according to claim 1, is characterized in that: described audio process comprises
The resistance R40 be sequentially connected in series, adjustable resistance VR1 and resistance R47, described resistance R47 ground connection;
Also comprise the isolation coupling electric capacity E8 be connected with adjustable resistance VR1 adjustable side, the operational amplifier TDA2030 that input is connected with isolation coupling electric capacity E8 by resistance R41, electric capacity E10 series connection ground connection, reverse input end in the same way, output exports loudspeaker to by electric capacity E11; Described operational amplifier TDA2030 is also provided with resistance R51 between input and output in the same way;
Also comprise biasing circuit, it comprises resistance R48, the resistance R49 of series connection, the resistance R50 of series connection, electric capacity E9, and described resistance R48 is connected to 12V power supply, described resistance R49, electric capacity E9 ground connection, described resistance R50 is connected to the reverse input end of operational amplifier TDA2030.
6. elevator digital speech communication device according to claim 1, it is characterized in that: described CAN interface comprises CAN transceiver and common mode choke LF4, described common mode choke LF4 is connected to CANL end and the CANH end of described CAN transceiver respectively, also comprise the Transient Suppression Diode T3 and electric capacity C40 that are connected in parallel on earth terminal and CANL end, comprise the Transient Suppression Diode T4 and electric capacity C41 that are connected in parallel on earth terminal and CANH end.
7. elevator digital speech communication device according to claim 1, is characterized in that: described electric power loop comprises pressurizer, filter circuit and current-limiting circuit;
Resistance RN1, fuse F1 and diode D1 that described current-limiting circuit bag is connected successively;
Described filter circuit comprises common mode choke LF1, is connected in parallel on the electric capacity C13 of common mode choke LF1 one end, is connected in parallel on electric capacity E1 and the electric capacity C14 of the common mode choke LF1 other end;
Described current-limiting circuit is linked into the just access pole of common mode choke LF1, and pressurizer is connected with common mode choke LF1 and accesses 24V power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420684958.2U CN204305149U (en) | 2014-11-14 | 2014-11-14 | A kind of elevator digital speech communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420684958.2U CN204305149U (en) | 2014-11-14 | 2014-11-14 | A kind of elevator digital speech communication device |
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| Publication Number | Publication Date |
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| CN204305149U true CN204305149U (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420684958.2U Withdrawn - After Issue CN204305149U (en) | 2014-11-14 | 2014-11-14 | A kind of elevator digital speech communication device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104410759A (en) * | 2014-11-14 | 2015-03-11 | 广州广日电梯工业有限公司 | Digital speech communication device for elevator and communication method |
| CN112737311A (en) * | 2020-12-21 | 2021-04-30 | 中国北方发动机研究所(天津) | Filter circuit |
-
2014
- 2014-11-14 CN CN201420684958.2U patent/CN204305149U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104410759A (en) * | 2014-11-14 | 2015-03-11 | 广州广日电梯工业有限公司 | Digital speech communication device for elevator and communication method |
| CN112737311A (en) * | 2020-12-21 | 2021-04-30 | 中国北方发动机研究所(天津) | Filter circuit |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150429 Effective date of abandoning: 20170405 |