CN209001972U - A kind of elevator COP slave circuit - Google Patents
A kind of elevator COP slave circuit Download PDFInfo
- Publication number
- CN209001972U CN209001972U CN201821908511.3U CN201821908511U CN209001972U CN 209001972 U CN209001972 U CN 209001972U CN 201821908511 U CN201821908511 U CN 201821908511U CN 209001972 U CN209001972 U CN 209001972U
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Abstract
The utility model discloses and provides a kind of elevator COP slave circuit, it includes communication interface (CN1), power input and control circuit, voltage regulator circuit, power discharging IC (U3), microphone input termi-nal, it further includes automatic suppression circuit, the automatic suppression circuit includes the first current-limiting resistance (R4), second current-limiting resistance (R6), divider resistance (R9), storage capacitor (E3), coupled capacitor (E4), commissure capacitor (E2), first diode (D1), second diode (D3), triode (Q2), the utility model circuit inhibits the on-off of microphone input termi-nal on power amplifier chips by AC signal power when intercommunication, reach half-duplex call automatic control, elimination is uttered long and high-pitched sounds.Circuit is simple, at low cost, high reliablity, easily debugs.
Description
Technical field
The utility model relates to elevator intercommunication technology electronic circuits more particularly to intercom for elevator to eliminate technology neck of uttering long and high-pitched sounds
Domain.
Background technique
It is a very unpleasant thing, this feelings that intercom for elevator issues howling in actual use in lift circuit
The generation of condition is caused by the defect in interphone circuit design mostly other than improper use or fault.The side of solution
Method and existing Problem Summary are as follows:
1, the amplification factor of loudspeaker power amplifier part and the called part of microphone is reduced, slave power amplifier importation is reduced
Volume and microphone reception.This method is reached premised on the In Call for sacrificing slave and is solved the problems, such as to utter long and high-pitched sounds.This
Kind method will appear the small problem of call sound in the more demanding occasion of communication effect, causes communication effect to be unable to satisfy and wants
It asks.
2, it is controlled using half-duplex IC, higher cost and debugging difficulty.
3, loudspeaker is separate as far as possible at a distance from microphone, destroy the condition of uttering long and high-pitched sounds of loudspeaker and microphone.(Xiang Tongsheng
Under conditions of sound size, the distance the remote more will not utter long and high-pitched sounds) but limited by environment and condition.
In existing elevator intercom system, in order to realize good speech quality, the loudspeaker amplifying circuit of intercom auxiliary unit
Need the matching as far as possible done with the receiving portion of microphone.This matched size is required between the two logical of compatibility as far as possible
Effect is talked about, excessive to lead to loudspeaker and microphone whistle, too small influence speech quality reduces the call effect of a whole set of intercom system
Fruit.It is the good thing for making us expressing one's gratification really that a kind of automatic control circuit uttered long and high-pitched sounds of controlling thus is added in intercom for elevator.
Utility model content
Technical problem to be solved in the utility model is overcome the deficiencies in the prior art, provides a kind of energy automatic control pair
The elevator COP slave circuit that the machine of saying is uttered long and high-pitched sounds.
The technical scheme adopted by the utility model is a kind of elevator COP slave circuit, it includes communication interface, power supply
Input and control circuit, voltage regulator circuit, power discharging IC, microphone input termi-nal, automatic suppression circuit, the automatic suppression circuit include
First current-limiting resistance, the second current-limiting resistance, divider resistance, storage capacitor, coupled capacitor, commissure capacitor, first diode, second
1,2 feet of diode, triode, the communication interface connect the input terminal of the power input and control circuit, the power supply
Input connect the input terminal of the voltage regulator circuit with the output end of control circuit, the output end of the voltage regulator circuit connects the function
The 6th foot of IC, one end of the microphone input termi-nal are put, the 5th foot of the communication interface connects first current-limiting resistance
One end, the other end of first current-limiting resistance connect the anode of the coupled capacitor, and the cathode of the coupled capacitor connects institute
The anode of first diode, the second diode is stated, the cathode of the first diode connects circuit GND, second diode
Cathode connect the storage capacitor positive, described second current-limiting resistance one end, the cathode of the storage capacitor connects electricity
Road GND, the other end of second current-limiting resistance connect the base stage of the triode, and the emitter of the triode connects circuit
GND, the collector of the triode connect the 3rd foot of the power discharging IC, one end of the divider resistance, the commissure capacitor
The other end of cathode, the divider resistance connects circuit GND, and the anode of the commissure capacitor connects the microphone input termi-nal
The other end, the 2nd foot of the communication interface, the 4th foot of the power discharging IC connect circuit GND.
The beneficial effects of the utility model are: it includes communication interface, power input and control electricity due to the utility model
Road, voltage regulator circuit, power discharging IC, microphone input termi-nal, automatic suppression circuit, the automatic suppression circuit include the first current limliting electricity
Resistance, the second current-limiting resistance, divider resistance, storage capacitor, coupled capacitor, commissure capacitor, first diode, the second diode, three
Pole pipe, 1,2 feet of the communication interface connect the input terminal of the power input and control circuit, the power input and control
The output end of circuit connects the input terminal of the voltage regulator circuit, the output end of the voltage regulator circuit connects the 6th of the power discharging IC
One end of foot, the microphone input termi-nal, the 5th foot of the communication interface connects one end of first current-limiting resistance, described
The other end of first current-limiting resistance connects the anode of the coupled capacitor, and the cathode of the coupled capacitor connects the one or two pole
The anode of pipe, the second diode, the cathode of the first diode connect circuit GND, the cathode connection of second diode
One end of positive, described second current-limiting resistance of the storage capacitor, the cathode of the storage capacitor connects circuit GND, described
The other end of second current-limiting resistance connects the base stage of the triode, and the emitter of the triode connects circuit GND, and described three
The collector of pole pipe connects the cathode of the 3rd foot of the power discharging IC, one end of the divider resistance, the commissure capacitor, described
The other end of divider resistance connects circuit GND, and the anode of the commissure capacitor connects the other end of the microphone input termi-nal, institute
State the 2nd foot of communication interface, the 4th foot connection circuit GND of the power discharging IC.So the utility model, which has, can automatically control pair
The function and circuit that the machine of saying is uttered long and high-pitched sounds are simple, at low cost, high reliablity, easily debug.
Detailed description of the invention
Fig. 1 is the utility model circuit principle structure block diagram.
Specific embodiment
As shown in Figure 1, the utility model it include communication interface CN1, power input and control circuit, voltage regulator circuit, function
Put IC U3, microphone input termi-nal, it further includes automatic suppression circuit, the automatic suppression circuit include the first current-limiting resistance R4,
Second current-limiting resistance R6, divider resistance R9, storage capacitor E3, coupled capacitor E4, commissure capacitor E2, first diode D1, second
Diode D3, triode Q2, the communication interface CN1 1,2 feet connect the input terminal of the power input and control circuit, institute
It states power input and the output end of control circuit connects the input terminal of the voltage regulator circuit, the output end of the voltage regulator circuit connects
One end of the 6th foot of the power discharging IC U3, the microphone input termi-nal, the 5th foot connection of the communication interface CN1 described the
The other end of one end of one current-limiting resistance R4, the first current-limiting resistance R4 connects the anode of the coupled capacitor E4, the coupling
The cathode for closing capacitor E4 connects the anode of the first diode D1, the second diode D3, the cathode of the first diode D1
Circuit GND is connected, the cathode of the second diode D3 connects positive, described second current-limiting resistance of the storage capacitor (E3)
One end of R6, the cathode of the storage capacitor E3 connect circuit GND, the other end connection described three of the second current-limiting resistance R6
The base stage of pole pipe Q2, the emitter of the triode Q2 connect circuit GND, and the collector connection of the triode Q2 is described
The 3rd foot of power discharging IC U3, one end of the divider resistance R9, the commissure capacitor E2 cathode, the divider resistance R9's is another
One end connects circuit GND, and the anode of the commissure capacitor E2 connects the other end of the microphone input termi-nal, the communication interface
The 2nd foot of CN1, the 4th foot of the power discharging IC U3 connect circuit GND.
In the present embodiment, the utility model circuit inhibits microphone on power amplifier chips by AC signal power when intercommunication
The on-off of input terminal, reaches half-duplex call automatic control, and elimination is uttered long and high-pitched sounds.Circuit is simple, at low cost, high reliablity, easily debugs.
Concrete principle is as follows:
Working principle:
When external communication signal (analog signal) enters in system through the 5. foot of CN1, decompression is carried out with E4 through R4 and is isolated
It is rectified by VD1, E3 is stored to the electric current of input and (inhibit the time by the adjustable call of change capacitor E3) laggard
R6 decompression provides a conducting voltage to triode Q2 base stage, its collector is connected with emitter after Q2 conducting, makes microphone
Input terminal and GND are shorted, and cut off the input signal of microphone.External signal and COP slave is set to automatically cut off microphone when conversing
Input signal is destroyed because too loudly or microphone and loudspeaker are too close due to generates the condition uttered long and high-pitched sounds, reaching automatic inhibition and uttering long and high-pitched sounds
Purpose.
Claims (1)
1. a kind of elevator COP slave circuit, it includes communication interface (CN1), power input and control circuit, voltage regulator circuit, function
Put IC(U3), microphone input termi-nal, it is characterised in that: it further includes automatic suppression circuit, and the automatic suppression circuit includes the
One current-limiting resistance (R4), the second current-limiting resistance (R6), divider resistance (R9), storage capacitor (E3), coupled capacitor (E4), commissure electricity
Hold (E2), first diode (D1), the second diode (D3), triode (Q2), 1, the 2 feet connection of the communication interface (CN1)
The output end of the input terminal of the power input and control circuit, the power input and control circuit connects the voltage regulator circuit
Input terminal, the voltage regulator circuit output end connect the 6th foot of the power discharging IC (U3), the microphone input termi-nal one
End, the 5th foot of the communication interface (CN1) connect one end of first current-limiting resistance (R4), first current-limiting resistance
(R4) the other end connects the anode of the coupled capacitor (E4), and the cathode of the coupled capacitor (E4) connects the one or two pole
The anode of (D1), the second diode (D3) is managed, the cathode of the first diode (D1) connects circuit GND, the two or two pole
Manage one end of positive, described second current-limiting resistance (R6) of the cathode connection storage capacitor (E3) of (D3), the energy storage electricity
The cathode for holding (E3) connects circuit GND, and the other end of second current-limiting resistance (R6) connects the base stage of the triode (Q2),
The emitter of the triode (Q2) connects circuit GND, and the collector of the triode (Q2) connects the power discharging IC (U3)
3rd foot, one end of the divider resistance (R9), the commissure capacitor (E2) cathode, the other end of the divider resistance (R9)
Circuit GND is connected, the anode of the commissure capacitor (E2) connects the other end of the microphone input termi-nal, the communication interface
(CN1) the 4th foot of the 2nd foot, the power discharging IC (U3) connects circuit GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821908511.3U CN209001972U (en) | 2018-11-20 | 2018-11-20 | A kind of elevator COP slave circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821908511.3U CN209001972U (en) | 2018-11-20 | 2018-11-20 | A kind of elevator COP slave circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209001972U true CN209001972U (en) | 2019-06-18 |
Family
ID=66807885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821908511.3U Active CN209001972U (en) | 2018-11-20 | 2018-11-20 | A kind of elevator COP slave circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209001972U (en) |
-
2018
- 2018-11-20 CN CN201821908511.3U patent/CN209001972U/en active Active
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