CN201008197Y - Intercom terminal bureau capable of implementing automatic broadcasting function for wired intercom system - Google Patents
Intercom terminal bureau capable of implementing automatic broadcasting function for wired intercom system Download PDFInfo
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- CN201008197Y CN201008197Y CNU2007200662341U CN200720066234U CN201008197Y CN 201008197 Y CN201008197 Y CN 201008197Y CN U2007200662341 U CNU2007200662341 U CN U2007200662341U CN 200720066234 U CN200720066234 U CN 200720066234U CN 201008197 Y CN201008197 Y CN 201008197Y
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Abstract
The utility model discloses a talk back end office for realizing automatic broadcasting of cable talk back system, which comprises a signal hold device, a dummy key device, a frequency generating board, and a microphone amplifier, wherein the signal hold device is used for gathering trigger signals and holding the trigger signals for a given period, the dummy key device enables the signal which is held by the signal hold device to act on a dummy key button action of the end office to make the trigger signal open a voice channel of the talk back system. The frequency generating board accepts the trigger signals and simultaneously triggers the frequency generating board to generate frequency signals when the voice channel is opened by the trigger signals, the microphone amplifier is connected with the frequency generating board, the frequency is sent into the voice channel of the talk back system and the amplified frequency signals are sent into the body of the cable talk back system via the voice channel of the system, and thereby the frequency signals are conveyed to the relevant end office loudspeaker by the body of cable talk back system to finish the automatic broadcasting of the cable talk back system.
Description
Technical field
The utility model includes the line communication technology field, more particularly, relates to a kind of intercommunication end office (EO) that makes the wired intercom system realize automatic broadcast capability.
Background technology
In large-scale production scene, usually all use industrial wired intercom system, the use of this system greatly facilitates the real-time contact between each associated production post, has played sizable effect smoothly for up and down effective communication between the operation and production.
The industrial wired intercom system of this kind generally includes main frame, power module, intercommunication end office (EO) and some other annexes and forms, and its basic operation principle is as follows:
Input voltage uses through the power supply supply equipment main frame that obtains direct current 48V and direct current 5V behind the power module respectively is inner, and wherein the direct current of 48V also is loaded in each intercommunication end office (EO).Some different functional modules are arranged in main frame inside, comprise digital power board, user's plate, amplify plate and functional module, wherein digital power board is equivalent to the central processing unit of complete equipment, and it is finished the control of other functional modules and various Signal Processing.Intercommunication end office (EO) links to each other with user's plate of main frame inside, and user's plate is finished the state-detection of on-the-spot end office (EO) and the foundation of voice channel.Amplification plate by main frame inside can drive on-the-spot loudspeaker and finish broadcasting to the scene.The functional module of main frame inside can realize and the communicating by letter of wireless system, with between the public telephone network communicate by letter and to the functions such as automatic broadcasting at scene.
In existing wired intercom system, the working method of existing intercommunication end office (EO) is as follows: existing intercommunication end office (EO) can be divided into desk-top end office (EO), weather proof end office (EO) and embedded end office (EO) according to the difference of mounting means.But the dissimilar end office (EO) of this three class is consistent on operation principle and working method.Usually, several buttons are arranged all in each end office (EO), each button is by the corresponding called end office of programming.Certain button on originating switch is pressed, then corresponding with it called end office has been set up voice channel, the amplifier of microphone of originating switch is opened, and by voice channel the signal of microphone is delivered to the speaker amplifier of called end office, by loud speaker with sound-reducing.
As seen, the terminal equipment of the just on-the-spot audio call of existing intercommunication end office (EO), the calling and called function in the time of can only finishing on-the-spot audio call.
In the wired intercom system, automatically broadcast capability is a kind of important function, the implementation method of existing automatic broadcast capability is as follows: realize that automatic broadcast capability just must be in the inner functional module of being correlated with that increases of main frame, but it is comparatively loaded down with trivial details to implement one side, and cost is also quite high on the other hand.The wired intercom system automatic broadcast capability of increase voice with Bo Tong company is an example, at first need be in the inner digital speech processing module (DSS1) that increases of wired intercom main frame.In addition, for storage of speech signals, on this module, also to increase the module of flash memory (FLASH EPROMs).System realizes the block diagram of automatic broadcast capability with reference to shown in Figure 1, and this system 100 comprises:
When triggering signal arrives main frame 101, at first by user's plate 102, model is that 4NSA captures this triggering signal, this moment, CPU 104 was digital power board control corresponding digital speech processing module 106, model is generation and the transmission that DSS1 and flash memory module 108 are finished corresponding voice signal jointly, this voice signal is sent in corresponding on-the-spot end office (EO) 110 and the on-site speaker 112, reports function thereby finished once automatic broadcasting speech.
Utilize existing technology to realize that automatic broadcast capability will resemble and dispose some functional modules Fig. 1, wherein user's plate 4NSA itself can meet 4 on-the-spot end office (EO)s at most, and just employed this user's plate, obviously some wasting of resources usually for the triggering signal of gathering a scene.And digital speech processing module DSS has only 4 audio interface, just can have four zones to realize automatic broadcast capability at most simultaneously, can not satisfy the needs of produced on-site sometimes.This has just caused prior art on the cost and the limitation on using.
The utility model content
The purpose of this utility model provides a kind of intercommunication end office (EO) that makes the wired intercom system realize automatic broadcast capability, and this intercommunication end office (EO) both can carry out audio call, has the seizure of triggering signal in the automatic broadcast capability, the function that voice signal transmits simultaneously again concurrently.
According to the utility model, a kind of intercommunication end office (EO) that makes the wired intercom system realize automatic broadcast capability is provided, comprising: signal holding device, the trigger collection signal also carries out triggering signal the maintenance of certain time length; Analogue-key device, the signal that signal holding device is kept act on the button analog buttons action of described intercommunication end office (EO), make triggering signal open the voice channel of intercom system; Audio frequency generation plate receives described triggering signal and trigger audio frequency generation plate when triggering signal is opened voice channel and makes it produce audio signal; Amplifier of microphone connects audio frequency generation plate, and audio signal is sent into the voice channel of intercom system, and the audio signal of amplifying through amplifier of microphone is sent to the main frame of wired intercom system by the voice channel of end office (EO); The main frame of wired intercom system is sent to the automatic broadcasting that corresponding end office (EO) loud speaker is finished the wired intercom system with this audio signal.
According to an embodiment of the present utility model, described signal holding device comprises: photoelectric coupling switch, gather described triggering signal; Reverser is connected to described photoelectric coupling switch triggering signal is become the rising edge triggering signal; Trigger receives the rising edge triggering signal and exports one group of logical signal from reverser; Counter is counted the control signal retention time according to one group of logical signal of trigger output.
According to an embodiment of the present utility model, described analogue-key device comprises: one group of logical signal of described trigger output is connected to a button of intercommunication end office (EO), the action of analogue-key; One integrated circuit is monitored the state of described button.
According to an embodiment of the present utility model, described audio frequency generation plate comprises: audio frequency generation chip receives described triggering signal and produces audio signal; Gating circuit is connected to described trigger, connects or turn-offs being connected of described audio frequency generation chip and described amplifier of microphone according to one group of logical signal of trigger output.
According to an embodiment of the present utility model, described amplifier of microphone comprises: resistor network receives audio signal and transmission that audio frequency generation chip produces; Power amplifier is by described resistor network received audio signal and output.
The intercommunication end office (EO) that the utility model provides not only both can carry out audio call, had the seizure of triggering signal in the automatic broadcast capability, the function that voice signal transmits simultaneously again concurrently.Utilize this utility model can make the scene that the automatic broadcast capability of realization that the zone of wired intercom system can be very cheap is installed, saved an equipment investment that increases digital speech processing module and user's plate according to conventional way, expense only is about 1/4th of a conventional way.And use is very flexible, can setting be installed flexibly according to different triggering signals, different broadcast areas.
Description of drawings
In the utility model, identical Reference numeral is represented identical feature all the time, wherein,
Fig. 1 is that intercom system realizes the system block diagram of broadcasting automatically in the prior art;
Fig. 2 is the structured flowchart according to the intercommunication end office (EO) of an embodiment of the present utility model;
Fig. 3 is the circuit theory diagrams according to the signal holding device of an embodiment of the present utility model;
Fig. 4 is the circuit theory diagrams according to the analogue-key device of an embodiment of the present utility model;
Fig. 5 is the circuit theory diagrams according to the audio frequency generation plate of an embodiment of the present utility model;
Fig. 6 is the circuit theory diagrams according to the amplifier of microphone of an embodiment of the present utility model;
Fig. 7 is the signal timing diagram according to intercommunication of the present utility model end office (EO).
Embodiment
Further describe the technical solution of the utility model below in conjunction with drawings and Examples.
According to the utility model, the intercommunication end office (EO) of a kind of wired intercom system is provided, Fig. 2 is the structured flowchart according to the intercommunication end office (EO) 200 of an embodiment of the present utility model, this intercommunication end office (EO) 200 comprises:
Signal holding device 202, the trigger collection signal also carries out triggering signal the maintenance of certain time length;
Analogue-key device 204, the signal that signal holding device 202 is kept acts on the button analog buttons action of intercommunication end office (EO), makes triggering signal open the voice channel of intercom system;
Audio frequency generation plate 206 receives triggering signal and trigger audio frequency generation plate 206 when triggering signal is opened voice channel and makes it produce audio signal;
Amplifier of microphone 208 connects audio frequency generation plate 206, and audio signal is sent into the voice channel 210 of intercom system, and the audio signal of amplifying through amplifier of microphone 208 is sent to the main frame 212 of wired intercom system by the voice channel 210 of system;
The main frame 212 of wired intercom system is sent to the automatic broadcasting that corresponding end office (EO) loud speaker 214 is finished the wired intercom system with this audio signal.
According to the utility model, end office's button that triggering signal acted on is a group calling button, and the zone of voice broadcast service need be carried out in the group calling scene of being of its definition.Its technical essential is triggering signal is kept, and acts on audio frequency generation plate, end office (EO) and main frame simultaneously, and audio signal is broadcasted in corresponding zone.
With reference to figure 7, Fig. 7 is the signal timing diagram according to intercommunication of the present utility model end office (EO), from the signal timing diagram of Fig. 7 as can be seen, as long as triggering signal 700 (i.e. the triggering signal of broadcasting automatically) is come then, audio signal 702 and inhibit signal 704 produce immediately, be that intercommunication end office (EO) 200 starts working immediately, and finish the function of automatic broadcasting.
With reference to figure 3, Fig. 3 is the circuit theory diagrams according to the signal holding device of an embodiment of the present utility model, and this signal holding device comprises: photoelectric coupling switch, trigger collection signal; Reverser is connected to photoelectric coupling switch triggering signal is become the rising edge triggering signal; Trigger receives the rising edge triggering signal and exports one group of logical signal from reverser; Counter is counted the control signal retention time according to one group of logical signal of trigger output.
With reference to figure 3, wherein triggering signal links to each other with the J1 port of photoelectric coupling switch S, after triggering signal enters photoelectric coupling switch by the J1 port, by inverter U1 triggering signal is become the rising edge triggering signal, inverter U1 becomes the rising edge triggering signal with the CL port of trigger U2 simultaneously.Photoelectric coupling switch S plays the effect of Signal Spacing.Trigger U2 is two D flip-flops, and it will export the Q high level under the effect of CL signal rising edge ,-Q low level.Counter U3 is 14 grades of ripple carry binary counters, and it begins counting during for low level at RST, suppose that the natural frequency of the oscillating circuit of resistance R 3, resistance R 4, capacitor C 1 composition is f
v, then the retention time of signal holding circuit is 2
14* 1/f
vChange frequency of oscillation f by the resistance of adjusting resistance R 4
vThereby, change the signal retention time.Wherein resistance R 1 and resistance R 2 are ancillary apparatus elements.
With reference to figure 4, Fig. 4 is the circuit theory diagrams according to the analogue-key device of an embodiment of the present utility model, and this analogue-key device is achieved as follows: one group of logical signal of trigger output is connected to a button of intercommunication end office (EO), the action of analogue-key; One integrated circuit, the state of monitoring button.
With reference to figure 4, in the retention time, before promptly a count cycle finishes.Trigger U2-Q is always low level, and-Q links to each other simulated operation worker's button actions with a certain button T1 of intercommunication end office (EO).The model of integrated circuit U4 is PIC16C73 among the figure, is responsible for handling the monitoring of key-press status signal.T1 is a button of intercommunication end office (EO), triggers inhibit signal and is connected to above this button T1, and is interim when triggering inhibit signal, trigger U2-Q is a low level, this moment, light-emitting diode D1 was shinny, showed this key on.Also comprise plug receptacle J2 among Fig. 4, finish and being connected of the CPU of main frame 212.Resistance R 5 among Fig. 4, resistance R 6, capacitor C 2, capacitor C 3, capacitor C 4 and capacitor C 5 are ancillary apparatus elements.
With reference to figure 5, Fig. 5 is the circuit theory diagrams according to the audio frequency generation plate of an embodiment of the present utility model, and this audio frequency generation plate comprises: audio frequency generation chip receives triggering signal and produces audio signal; Gating circuit is connected to trigger, connects or turn-offs being connected of described audio frequency generation chip and amplifier of microphone according to one group of logical signal of trigger output.
As shown in Figure 5, when the triggering signal trailing edge comes then, clock port CLK by audio frequency generation chip U5 starts audio frequency generation chip U5, its sound intermediate frequency generation chip U5 is the audio-frequency generator with voice storage module, by OUT port output voice signal, gating circuit U6 is an integrated circuit 4066, play the effect of a gating, Vin is a path to Vout when VC is high level, and when the inhibit signal that triggering signal is carried out continues to exist, VC is high level all the time, that is to say when inhibit signal continues to exist, and can guarantee voice signal input microphone amplifying circuit.In the embodiment shown in fig. 5, gating circuit U6 is connected to the microphone amplifying circuit by resistance R 5, resistance R 6 and capacitor C 10.
With reference to figure 6, Fig. 6 is the circuit theory diagrams according to the amplifier of microphone of an embodiment of the present utility model.This amplifier of microphone comprises: resistor network receives audio signal and transmission that audio frequency generation chip produces; Power amplifier is by described resistor network received audio signal and output.
With reference to figure 6, resistance R 8, resistance R 9, resistance R 10, resistance R 11, resistance R 12, resistance R 13, resistance R 14, resistance R 15 and capacitor C 11, capacitor C 12, capacitor C 13, capacitor C 14 and capacitor C 15 are formed resistor network, and power amplifier A is the TS914 type.
An application implementation of the present utility model is by intercommunication of the present utility model end office (EO) being finished the warning function of on-the-spot PLC equipment fault.Generally, after on-the-spot PLC breaks down, the spot check personnel can't recognize time and the orientation that the PLC fault takes place timely, understanding equipment fault that in other words can't be real-time, and by application of the present utility model, the fault-signal of on-the-spot PLC equipment can be taken out, insert end office (EO) nearby as a triggering signal of reporting to the police, when PLC broke down, the spot check personnel just can recognize the fault that PLC takes place timely like this, and abort situation is also had an orientation roughly.Thereby that guarantees to produce carries out smoothly.
In sum, the utility model provides a kind of intercommunication end office (EO), both can carry out audio call, has the seizure of triggering signal in the automatic broadcast capability, the function that voice signal transmits simultaneously again concurrently.Utilize this utility model can make the scene that the automatic broadcast capability of realization that the zone of wired intercom system can be very cheap is installed, saved an equipment investment that increases digital speech processing module and user's plate according to conventional way, expense only is about 1/4th of a conventional way.And use is very flexible, can setting be installed flexibly according to different triggering signals, different broadcast areas.
Claims (5)
1. an intercommunication end office (EO) that makes the wired intercom system realize automatic broadcast capability is characterized in that, comprising:
Signal holding device, the trigger collection signal also carries out triggering signal the maintenance of certain time length;
Analogue-key device, the signal that signal holding device is kept act on the button analog buttons action of described intercommunication end office (EO), make triggering signal open the voice channel of intercom system;
Audio frequency generation plate receives described triggering signal and trigger audio frequency generation plate when triggering signal is opened voice channel and makes it produce audio signal;
Amplifier of microphone connects audio frequency generation plate, and audio signal is sent into the voice channel of intercom system, and the audio signal of amplifying through amplifier of microphone is sent to the main frame of wired intercom system by the voice channel of end office (EO);
The main frame of wired intercom system is sent to the automatic broadcasting that corresponding end office (EO) loud speaker is finished the wired intercom system with this audio signal.
2. intercommunication as claimed in claim 1 end office (EO) is characterized in that described signal holding device comprises:
Photoelectric coupling switch is gathered described triggering signal;
Reverser is connected to described photoelectric coupling switch triggering signal is become the rising edge triggering signal;
Trigger receives the rising edge triggering signal and exports one group of logical signal from reverser;
Counter is counted the control signal retention time according to one group of logical signal of trigger output.
3. intercommunication as claimed in claim 2 end office (EO) is characterized in that described analogue-key device comprises:
One group of logical signal of described trigger output is connected to a button of intercommunication end office (EO), the action of analogue-key;
One integrated circuit is monitored the state of described button.
4. intercommunication as claimed in claim 3 end office (EO) is characterized in that described audio frequency generation plate comprises:
Audio frequency generation chip receives described triggering signal and produces audio signal;
Gating circuit is connected to described trigger, connects or turn-offs being connected of described audio frequency generation chip and described amplifier of microphone according to one group of logical signal of trigger output.
5. intercommunication as claimed in claim 4 end office (EO) is characterized in that described amplifier of microphone comprises:
Resistor network receives audio signal and transmission that audio frequency generation chip produces;
Power amplifier is by described resistor network received audio signal and output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200662341U CN201008197Y (en) | 2007-01-11 | 2007-01-11 | Intercom terminal bureau capable of implementing automatic broadcasting function for wired intercom system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200662341U CN201008197Y (en) | 2007-01-11 | 2007-01-11 | Intercom terminal bureau capable of implementing automatic broadcasting function for wired intercom system |
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| CN201008197Y true CN201008197Y (en) | 2008-01-16 |
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| CNU2007200662341U Expired - Fee Related CN201008197Y (en) | 2007-01-11 | 2007-01-11 | Intercom terminal bureau capable of implementing automatic broadcasting function for wired intercom system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102147605B (en) * | 2010-02-08 | 2013-01-02 | 宝山钢铁股份有限公司 | Scatter centralized control method for equipment monitoring and automatic calling unit |
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2007
- 2007-01-11 CN CNU2007200662341U patent/CN201008197Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102147605B (en) * | 2010-02-08 | 2013-01-02 | 宝山钢铁股份有限公司 | Scatter centralized control method for equipment monitoring and automatic calling unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080116 Termination date: 20140111 |