CN205356495U - Automatic switching device - Google Patents
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- CN205356495U CN205356495U CN201521133021.7U CN201521133021U CN205356495U CN 205356495 U CN205356495 U CN 205356495U CN 201521133021 U CN201521133021 U CN 201521133021U CN 205356495 U CN205356495 U CN 205356495U
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Abstract
The utility model provides an automatic switching device, telephone signal detection circuitry is used for rightly the electric bell message of coming in the telephone signal of switch input number is counted, judges come the number of times of electric bell message number whether to be greater than the first threshold value of presetting, if send and trigger the instruction extremely processing circuit, processing circuit is used for the basis it triggers to trigger the instruction hands free telephone entering play state, so that audio signal in the received telephone signal of hands free telephone broadcast institute. Compared with the prior art, the utility model, when having realized calling, ability automatically connect's function behind the tinkle of bells that made a sound predetermined number of times, thus avoided can't hear the untimely condition of contact that appears because of the noisy staff of leading to of environment.
Description
Technical field
This utility model relates to communication technical field, in particular to a kind of automatic switching device.
Background technology
At present, underground coal mine phone and ground liaison mainly adopt program control scheduling phone, and what down-hole then adopted is mining intrinsic safety electro words, and it is exactly adopt conventional telephone contact that ground maneuvers room and belt lane, down-hole or work surface carry out call.
Owing to the environment of down-hole is more noisy, often occurring that telephone ringer sounds, staff can't hear, thus causing situation about contacting not in time.
Utility model content
In view of this, this utility model provides a kind of automatic switching device, to improve existing down-hole and to link up the generation causing contacting situation not in time because environment is noisy on the ground.
For achieving the above object, this utility model provides following technical scheme:
A kind of automatic switching device, is applied to include the control system of described automatic switching device, and described control system also includes switch and hands free telephone, and described device includes: telephone signal testing circuit and signal processing circuit；The incoming call ring signal that described telephone signal testing circuit is used in the telephone signal that described switch is inputted counts, it is judged that the number of times of described incoming call ring signal, whether more than the first predetermined threshold value, if so, sends triggering command extremely described signal processing circuit；Described signal processing circuit enters broadcast state for triggering described hands free telephone according to described triggering command, so that described hands free telephone plays the audio signal in received telephone signal.
This utility model provides a kind of automatic switching device, is counted by the incoming call ring signal in the telephone signal that described switch is inputted by described telephone signal testing circuit, and judges that whether the number of times of described incoming call ring signal is more than the first predetermined threshold value.If so, triggering command extremely described signal processing circuit is sent.And described signal processing circuit enters broadcast state for triggering hands free telephone according to described triggering command, described hands free telephone is enable to play the audio signal in the telephone signal received, it is achieved thereby that when calling, after ringing the tinkle of bells of pre-determined number can the function of turn on automatically, it is to avoid cause staff can't hear because environment is noisy thus situation about contacting not in time occurs.
Accompanying drawing explanation
For clearer explanation this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the module frame chart of the automatic switching device that this utility model first embodiment provides；
Fig. 2 is the module frame chart of the automatic switching device that this utility model the second embodiment provides；
Fig. 3 is the circuit structure diagram of the telephone signal testing circuit that this utility model the second embodiment provides；
Fig. 4 is the circuit structure diagram of the phone ringing testing circuit that this utility model the second embodiment provides；
Fig. 5 is the circuit structure diagram of the signal processing circuit that this utility model the second embodiment provides.
Detailed description of the invention
Below in conjunction with accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments.Hereinafter the detailed description of the embodiment of the present utility model provided in the accompanying drawings is not intended to limit claimed scope of the present utility model, but is merely representative of selected embodiment of the present utility model.Based on embodiment of the present utility model, the every other embodiment that those skilled in the art obtain under the premise not making creative work, broadly fall into the scope of this utility model protection.
Details refer to the automatic switching device 100 that Fig. 1, Fig. 1 illustrate that this utility model first embodiment provides, and are applied to include the control system of described automatic switching device 100.Described control system also includes switch 200 and hands free telephone 300, and described device includes: telephone signal testing circuit 110 and signal processing circuit 120；
Described telephone signal testing circuit 110 is for counting the incoming call ring signal in the telephone signal of described switch 200 input, judge that whether the number of times of described incoming call ring signal is more than the first predetermined threshold value, if so, triggering command extremely described signal processing circuit 120 is sent；
Described signal processing circuit 120 enters broadcast state for triggering described hands free telephone 300 according to described triggering command, so that described hands free telephone 300 plays the audio signal in received telephone signal.
In a kind of specific embodiment of the present embodiment, described telephone signal testing circuit 110 can include tone decoder, and described tone decoder can detect the incoming call ring signal in telephone signal.Owing to the frequency of the different audio signal in telephone signal is different, the frequency of ring signal of such as sending a telegram here is 25Hz, therefore, as long as rationally arranging the response frequency of tone decoder, make tone decoder when receiving the signal of 25Hz frequency, electric bell tone signal is converted to pulse in the future, just can to incoming call ring signal counting.
Described signal processing circuit 120 can be a device that can export control signal according to input signal, for instance, it is possible to for relay or reverse-blocking tetrode thyristor etc..When receiving triggering signal, relay closes；When not receiving triggering signal, relay disconnects.
Specifically, described automatic switching device 100 also includes phone ringing testing circuit 130, and details are referring to Fig. 2.Described phone ringing testing circuit 130 is for extracting the incoming call ring signal in the telephone signal that described switch 200 inputs.Described phone ringing testing circuit 130 can be also used for the busy-back signal extracting in the telephone signal of described switch 200 input.
Described phone ringing testing circuit 130 specifically can extract incoming call ring signal and busy-back signal with photoelectrical coupler.The diode anode end of described photoelectrical coupler is as the input of described telephone signal, the diode cathode end ground connection of described photoelectrical coupler, the collector terminal external power supply of the phototriode of described photoelectrical coupler, the emitter terminal of the phototriode of described photoelectrical coupler is connected with described telephone signal testing circuit 110.
Described telephone signal testing circuit 110 counts specifically for the incoming call ring signal that described phone ringing testing circuit 130 is inputted, it is judged that institute's count value, whether more than the first predetermined threshold value, if so, sends triggering command extremely described signal processing circuit 120.
Described telephone signal testing circuit 110 is additionally operable to the busy-back signal of described phone ringing testing circuit 130 input is counted, it is judged that whether the number of times of described busy-back signal, more than the second predetermined threshold value, if so, sends and hang up instruction extremely described signal processing circuit 120.
The frequency of such as busy-back signal is 450Hz, therefore, as long as rationally arranging the response frequency of tone decoder so that busy-back signal, when receiving the signal of 450Hz frequency, is converted to pulse by tone decoder, just can busy-back signal be counted.
And described signal processing circuit 120 specifically can be also used for according to described in hang up instruction set out hands free telephone 300 enter hang up state.
Described telephone signal testing circuit 110 specifically includes single-chip microcomputer U3, the first ATD and the second ATD, and details refer to Fig. 3.
The emitter terminal of the phototriode of above-mentioned photoelectrical coupler is specifically connected with the first ATD and second ATD of described telephone signal testing circuit 110.Described first ATD includes the first tone coding chip U1, the first resistance R201 and the first electric capacity C202, and described second ATD includes the second tone coding chip U2, the second resistance R203 and the second electric capacity C205.First tone coding chip U1 and the second tone coding chip U2 is LM567.
Described photoelectrical coupler is connected with the 3rd pin (i.e. input) of described first tone coding chip U1, one end of described first resistance R201 is connected with the 5th pin (i.e. timing element R end) of described first tone coding chip U1, the other end of described first resistance R201 is connected with described 6th pin (i.e. timing element C end) of the first tone coding chip U1 and one end of described first electric capacity C202 respectively, the other end ground connection of described first electric capacity C202, 8th pin (i.e. outfan) of described first tone coding chip U1 couples with described single-chip microcomputer U3.
Described photoelectrical coupler is connected with the 3rd pin (i.e. input) of described second tone coding chip U2, one end of described second resistance R203 is connected with the 5th pin (i.e. timing element R end) of described second tone coding chip U2, the other end of described second resistance R203 is connected with described 6th pin (i.e. timing element C end) of the second tone coding chip U2 and one end of described second electric capacity C205 respectively, the other end ground connection of described second electric capacity C205, 8th pin (i.e. outfan) of described second tone coding chip U2 couples with described single-chip microcomputer U3.
Described first ATD may be used for exporting first pulse extremely described single-chip microcomputer U3 when often receiving a described incoming call ring signal.
Described second ATD can be also used for exporting second pulse extremely described single-chip microcomputer U3 when often receiving a described busy-back signal.
Described single-chip microcomputer U3 can be specifically PIC16F716.First pin of described single-chip microcomputer U3 is connected with the 8th pin of described first tone coding chip U1, and second pin of described single-chip microcomputer U3 is connected with the 8th pin of described second tone coding chip U2.Single-chip microcomputer U3 is for counting respectively described first pulse received and described second pulse.If the number of times of described first pulse is more than the first predetermined threshold value, then judge that the number of times of described incoming call ring signal is more than the first predetermined threshold value, send high level extremely described signal processing circuit 120.If the number of times of described second pulse is more than the second predetermined threshold value, then judge that the number of times of described busy-back signal is more than the second predetermined threshold value, send low level extremely described signal processing circuit 120.
Described first predetermined threshold value and the second predetermined threshold value all can reset.Specifically, described first predetermined threshold value can be six times, and described second predetermined threshold value can be five times.
Being appreciated that described first predetermined threshold value and described second predetermined threshold value can also be other number of times, it is to restriction of the present utility model that the concrete numerical value of described first predetermined threshold value and described second predetermined threshold value should not be construed.
Fig. 4 illustrates the phone ringing testing circuit 130 that this utility model provides, and described phone ringing testing circuit 130 includes photoelectrical coupler U101.Described photoelectrical coupler U101 can extract the incoming call ring signal in the telephone signal of described switch 200 input and busy-back signal.
The diode anode end (i.e. first pin of described photoelectrical coupler U101) of described photoelectrical coupler U101 is as the input of described telephone signal, diode cathode end (i.e. second pin of the described photoelectrical coupler U101) ground connection of described photoelectrical coupler U101, collector terminal (i.e. the 4th pin of the described photoelectrical coupler U101) external power supply of the phototriode of described photoelectrical coupler U101, the emitter terminal (i.e. the 3rd pin of described photoelectrical coupler U101) of the phototriode of described photoelectrical coupler U101 is coupled with described first ATD and the second ATD respectively.
Fig. 5 illustrates the signal processing circuit 120 that this utility model provides, and described signal processing circuit 120 includes the 3rd resistance R605, the 3rd electric capacity C410, the first current-limiting resistance R600, the second current-limiting resistance R601, the 3rd current-limiting resistance R602, the 4th current-limiting resistance R603, PNP triode Q600 and NPN audion Q601.
Described one end of first current-limiting resistance R600 is connected with the emitter stage of described PNP triode Q600, and the other end of described first current-limiting resistance R600 is connected with one end of described second current-limiting resistance R601.
The other end of described second current-limiting resistance R601 is connected with one end of the base stage of described PNP triode Q600 and described 3rd current-limiting resistance R602 respectively, and the colelctor electrode of described PNP triode Q600 is connected with described 3rd electric capacity C410 and the 3rd resistance R605 respectively；The other end of described 3rd current-limiting resistance R602 is connected with the colelctor electrode of described NPN audion Q601.The emitter stage of described NPN audion Q601 connects with one end not being connected with the colelctor electrode of PNP triode Q600 of described 3rd resistance R605.
One end of described 4th current-limiting resistance R603 is connected with the base stage of described NPN audion Q601, and the other end of described 4th current-limiting resistance R603 is connected with described single-chip microcomputer U3.
The emitter stage of described PNP triode Q600 is as the signal receiving end of signal processing circuit 120, and described signal receiving end is used for receiving described telephone signal.
The base stage of described NPN audion Q601 is for the triggering end as described signal processing circuit 120, described triggering end in the connection receiving high point conducts and described hands free telephone 300, turning off the connection with described hands free telephone 300 when receiving low level.
Being appreciated that the audion in this utility model embodiment can also be replaced by the field effect transistor with identity function, the coordinating of NPN audion Q601 and PNP triode Q600 in this utility model embodiment can also be replaced by relay.
In use, first the phone ringing testing circuit 130 shown in Fig. 4 carries out extracting signal, described incoming call ring signal and busy-back signal, after the described photoelectrical coupler U101 in described phone ringing testing circuit 130 carries out signal extraction, couple with described first ATD in Fig. 3 and described second ATD through the 3rd pin of described photoelectrical coupler U101.
Specifying according to GB GB3380-82, the frequency of incoming ring tone is: f=25+3Hz；The frequency of busy tone is: f=450 ± 25Hz.LM567 can by the resistance being connected with the 5th pin and the 6th pin of LM567 and electric capacity to adjust the signal of the LM567 characteristic frequency being able to receive that.
Specifically, for described first ATD, it is possible to by changing the described first resistance R201 and described first electric capacity C202 being connected with the first tone coding chip U1, change the described first tone coding chip U1 frequency being able to receive that.
Owing to the frequency range of incoming ring tone is 22Hz to 28Hz, therefore numerical value suitable described first resistance R201 and the first electric capacity C202 can be set, make when described first tone coding chip U1 receive frequency range be 22Hz to 28Hz time, the 8th pin of described first tone coding chip U1 is become low level from high level.
Specifically, for described second ATD, it is possible to by changing the described second resistance R203 and described second electric capacity C205 being connected with the second tone coding chip U2, change the described second tone coding chip U2 frequency being able to receive that.
Owing to the frequency range of busy-back signal is 425Hz to 475Hz, therefore numerical value suitable described second resistance R203 and the second electric capacity C205 can be set, make when described second tone coding chip U2 receive frequency range be 425Hz to 475Hz time, the 8th pin of described second tone coding chip U2 is become low level from high level.
Described single-chip microcomputer U3 is specifically as follows PIC16F716, it is possible to by the first predetermined threshold value pre-set, from high level, the 8th pin of described first tone coding chip U1 is become low level number of times and counts.Specifically, the numerical value of the first predetermined threshold value can be set to six, namely when the 8th pin of described first tone coding chip U1 from high level become the number of times of low level change be six times time, the 17th pin output high level of described single-chip microcomputer U3 is to described signal processing circuit 120.
Same, it is also possible to by the second predetermined threshold value pre-set, the 8th pin of described second tone coding chip U2 is become low level number of times from high level and count.Specifically, it is possible to the numerical value of the second predetermined threshold value is set to five.When described second tone coding chip U2 the 8th pin from high level become low level change number of times be five times time, the 17th pin output low level of described single-chip microcomputer U3 is to described signal processing circuit 120.
When the 17th pin output high level of described single-chip microcomputer U3, the described NPN audion Q601 conducting in Fig. 5 signal processing circuit 120.Described NPN audion Q601 conducting is so that described PNP triode Q600 turns on, therefore direct current signal can be come in, and through described 3rd resistance R605 ground connection；Audio signal then after the emitter stage of described NPN audion Q601, and can be docked with hands free telephone 300 audio frequency after described 3rd electric capacity C410, thus realizing audio signal to connection function.
When the 17th pin output low level of described single-chip microcomputer U3, described NPN audion Q601 is off state, and described PNP triode Q600 is also at off state, therefore described signal processing circuit 120 is off.
This utility model provides a kind of automatic switching device, counted by the incoming call ring signal in the telephone signal that described switch 200 is inputted by described telephone signal testing circuit 110, and judge that whether the number of times of described incoming call ring signal is more than the first predetermined threshold value.If so, triggering command extremely described signal processing circuit 120 is sent.And described signal processing circuit 120 enters broadcast state for triggering hands free telephone 300 according to described triggering command, make described hands free telephone 300 can play the audio signal in the telephone signal received, it is achieved thereby that when calling, after ringing the tinkle of bells of pre-determined number can the function of turn on automatically, it is to avoid cause staff can't hear because environment is noisy thus situation about contacting not in time occurs.
For making the purpose of this utility model embodiment, technical scheme and advantage clearly, above in conjunction with the accompanying drawing in this utility model embodiment, carry out describing clearly and completely to the technical scheme in this utility model embodiment, obviously, described embodiment is a part of embodiment of this utility model, rather than whole embodiments.Generally can with various different configurations arrange and design with the assembly of this utility model embodiment that illustrate described in accompanying drawing herein.
Therefore, the detailed description of the above embodiment of the present utility model to providing in the accompanying drawings is not intended to limit claimed scope of the present utility model, but is merely representative of selected embodiment of the present utility model.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.
It should also be noted that similar label and letter below figure represent similar terms, therefore, once a certain Xiang Yi accompanying drawing is defined, then it need not be carried out definition further and explain in accompanying drawing subsequently.
In description of the present utility model, it should be noted that, term " " center ", " on ", D score, " left side ", " right side ", " vertically ", " level ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, or this utility model product orientation usually put or position relationship when using, it is for only for ease of description this utility model and simplifies description, rather than the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " first ", " second ", " the 3rd " etc. are only used for distinguishing description, and it is not intended that indicate or hint relative importance.
In description of the present utility model, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " setting ", " installation ", " being connected ", " connection " should be interpreted broadly, for instance, it is possible to it is fixing connection, can also be removably connect, or connect integratedly；Can be mechanically connected, it is also possible to be electrical connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, it is possible to be the connection of two element internals.For the ordinary skill in the art, it is possible to concrete condition understands above-mentioned term concrete meaning in this utility model.
Claims (10)
1. an automatic switching device, it is characterised in that being applied to include the control system of described automatic switching device, described control system also includes switch and hands free telephone, and described device includes: telephone signal testing circuit and signal processing circuit；
The incoming call ring signal that described telephone signal testing circuit is used in the telephone signal that described switch is inputted counts, it is judged that the number of times of described incoming call ring signal, whether more than the first predetermined threshold value, if so, sends triggering command extremely described signal processing circuit；
Described signal processing circuit enters broadcast state for triggering described hands free telephone according to described triggering command, so that described hands free telephone plays the audio signal in received telephone signal.
2. device according to claim 1, it is characterised in that also include phone ringing testing circuit；
Described phone ringing testing circuit is for extracting the incoming call ring signal in the telephone signal that described switch inputs；
Described telephone signal testing circuit is for counting the incoming call ring signal of described phone ringing testing circuit input, it is judged that institute's count value, whether more than the first predetermined threshold value, if so, sends triggering command extremely described signal processing circuit.
3. device according to claim 2, it is characterised in that described phone ringing testing circuit is additionally operable to the busy-back signal extracting in the telephone signal of described switch input；
Described telephone signal testing circuit is additionally operable to the busy-back signal of described phone ringing testing circuit input is counted, it is judged that whether the number of times of described busy-back signal, more than the second predetermined threshold value, if so, sends and hang up instruction extremely described signal processing circuit；
Described signal processing circuit be additionally operable to according to described in hang up described in instruction triggers hands free telephone and enter and hang up state.
4. device according to claim 3, it is characterised in that described telephone signal testing circuit includes single-chip microcomputer, the first ATD and the second ATD, and described first ATD and the second ATD all couple with described single-chip microcomputer；
Described first ATD for exporting first pulse extremely described single-chip microcomputer when often receiving a described incoming call ring signal；
Described second ATD for exporting second pulse extremely described single-chip microcomputer when often receiving a described busy-back signal；
Described single-chip microcomputer is for counting respectively described first pulse received and described second pulse, if the number of times of described first pulse is more than the first predetermined threshold value, then judge that the number of times of described incoming call ring signal is more than the first predetermined threshold value, send high level extremely described signal processing circuit, if the number of times of described second pulse is more than the second predetermined threshold value, then judge that the number of times of described busy-back signal is more than the second predetermined threshold value, send low level extremely described signal processing circuit；
Described signal processing circuit is additionally operable to trigger described hands free telephone according to the described high level received and enters broadcast state, triggers the entrance of described hands free telephone according to the described low level received and hangs up state.
5. device according to claim 4, it is characterized in that, described first ATD includes the first tone coding chip, first resistance and the first electric capacity, the input of described first tone coding chip couples with described phone ringing testing circuit, the timing element R end of described first tone coding chip is connected with one end of described first resistance, the other end of described first resistance is connected with the timing element C end of described first tone coding chip and one end of described first electric capacity respectively, the other end ground connection of described first electric capacity, the outfan of described first tone coding chip couples with described single-chip microcomputer.
6. device according to claim 5, it is characterized in that, described second ATD includes the second tone coding chip, second resistance and the second electric capacity, the input of described second tone coding chip couples with described phone ringing testing circuit, the timing element R end of described second tone coding chip is connected with one end of described second resistance, the other end of described second resistance is connected with the timing element C end of described second tone coding chip and one end of described second electric capacity respectively, the other end ground connection of described second electric capacity, the outfan of described second tone coding chip couples with described single-chip microcomputer.
7. device according to claim 6, it is characterized in that, described phone ringing testing circuit includes photoelectrical coupler, described photoelectrical coupler is used for the incoming call ring signal and the busy-back signal that extract in the telephone signal of described switch input, the diode anode end of described photoelectrical coupler is as the input of described telephone signal, the diode cathode end ground connection of described photoelectrical coupler, the collector terminal external power supply of the phototriode of described photoelectrical coupler, the emitter terminal of the phototriode of described photoelectrical coupler is coupled with described first ATD and the second ATD respectively.
8. device according to claim 4, it is characterised in that described signal processing circuit includes the 3rd resistance, the 3rd electric capacity, the first current-limiting resistance, the second current-limiting resistance, the 3rd current-limiting resistance, the 4th current-limiting resistance, PNP triode and NPN audion,
One end of described first current-limiting resistance is connected with the emitter stage of described PNP triode, and the other end of described first current-limiting resistance is connected with one end of described second current-limiting resistance,
The other end of described second current-limiting resistance is connected with one end of the base stage of described PNP triode and described 3rd current-limiting resistance respectively, and the colelctor electrode of described PNP triode is connected with described 3rd electric capacity and the 3rd resistance respectively,
The other end of described 3rd current-limiting resistance is connected with the colelctor electrode of described NPN audion, and the emitter stage of described NPN audion connects with one end not being connected with the colelctor electrode of PNP triode of described 3rd resistance,
One end of described 4th current-limiting resistance is connected with the base stage of described NPN audion, and the other end of described 4th current-limiting resistance is connected with described single-chip microcomputer,
The emitter stage of described PNP triode is as the signal receiving end of signal processing circuit, and described signal receiving end is used for receiving described telephone signal；
The base stage of described NPN audion is for the triggering end as described signal processing circuit, and described triggering end, for the connection of the conducting when receiving high level with described hands free telephone, turns off the connection with described hands free telephone when receiving low level.
9. device according to claim 1, it is characterised in that the frequency range of described incoming call ring signal is 22Hz to 28Hz.
10. device according to claim 3, it is characterised in that the frequency range of described busy-back signal is 425Hz to 475Hz.
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|---|---|---|---|
| CN201521133021.7U CN205356495U (en) | 2015-12-30 | 2015-12-30 | Automatic switching device |
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| CN201521133021.7U CN205356495U (en) | 2015-12-30 | 2015-12-30 | Automatic switching device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105472175A (en) * | 2015-12-30 | 2016-04-06 | 南京双京电器集团有限公司 | Automatic switchover device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105472175A (en) * | 2015-12-30 | 2016-04-06 | 南京双京电器集团有限公司 | Automatic switchover device and method |
| CN105472175B (en) * | 2015-12-30 | 2019-04-12 | 南京双京电器集团有限公司 | Automatic switching device and method |
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