CN103473899A - Infrared signal amplification stage location coding circuit - Google Patents
Infrared signal amplification stage location coding circuit Download PDFInfo
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- CN103473899A CN103473899A CN2013104300265A CN201310430026A CN103473899A CN 103473899 A CN103473899 A CN 103473899A CN 2013104300265 A CN2013104300265 A CN 2013104300265A CN 201310430026 A CN201310430026 A CN 201310430026A CN 103473899 A CN103473899 A CN 103473899A
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- 238000003199 nucleic acid amplification method Methods 0.000 title claims abstract description 59
- 230000006698 induction Effects 0.000 claims abstract description 23
- 230000011664 signaling Effects 0.000 claims description 15
- 230000005669 field effect Effects 0.000 claims description 11
- 230000000903 blocking effect Effects 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 3
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Abstract
The invention discloses an infrared signal amplification stage location coding circuit. The infrared signal amplification stage location coding circuit comprises an infrared induction and signal amplifying circuit, an infrared signal coding circuit and a power source circuit. The power source circuit provides 5V power source for the infrared induction and signal amplifying circuit and provides 12V power source for the infrared signal coding circuit and an infrared signal transmitting circuit. An infrared signal is induced by the infrared induction and signal amplifying circuit and is transmitted to the infrared signal coding circuit after amplification. The amplified infrared signal is received by the infrared signal coding circuit, converted into a location signal through an internal coder, and output. The infrared signal amplification stage location coding circuit provides the stable location signal so that external interference and unnecessary economic losses are avoided.
Description
Technical field
The present invention relates to position encoded circuit, particularly the position encoded circuit of a kind of infrared signal amplifier stage.
Background technology
Alarm is a kind of for preventing or preventing certain event that the consequence caused occurs, and with forms such as sound, light, air pressure, reminds or warn the electronic product that people should take certain action.Alarm is divided into mechanical alarm device and electronic alarm at first.Along with scientific and technological progress, what in prior art, application was maximum is infra-red alarm, and infra-red alarm forms warning system by alarm host machine and infrared eye.Once detect someone, invade, infra-red alarm is wirelessly transmitted to alarm host machine to position signalling immediately, after main frame receives position signalling, can send the functions such as warning.
The inventor, in realizing process of the present invention, finds in prior art at least to exist following shortcoming and defect:
Position encoded circuit structure complexity in existing infra-red alarm circuit, and the position signalling of output is unstable, occur that sometimes alarm host machine does not receive the situation of position signalling, incured loss through delay the opportunity dealt with an urgent situation, caused unnecessary economic loss.
Summary of the invention
The invention provides the position encoded circuit of a kind of infrared signal amplifier stage, this position encoded circuit structure is simple, and the position signalling of output is stable, has reduced economic loss, described below:
The position encoded circuit of a kind of infrared signal amplifier stage, the position encoded circuit of described infrared signal amplifier stage comprises: infrared induction and signal amplification circuit, infrared signal coding circuit and power circuit,
Described power circuit provides the 5V power supply for described infrared induction and signal amplification circuit, and described power circuit provides the 12V power supply for described infrared signal coding circuit; Described infrared induction and signal amplification circuit induction infrared signal transfer in described infrared signal coding circuit after amplifying processing; The infrared signal that described infrared signal coding circuit receives after amplifying becomes the position signalling of coding by inner coder transitions, and output.
Described infrared induction and signal amplification circuit comprise: infrared inductor, the external biasing circuit formed by the first resistance, the second resistance, the 3rd resistance and the 3rd electric capacity of described infrared inductor, described the first resistance connects respectively the first electric capacity, the second electric capacity and 5V power supply, the power input of 5V power supply access signal amplification chip, the bias current of described signal amplification chip arranges end by the 4th resistance eutral grounding; The in-phase input end of described signal amplification chip receives by the 5th resistance the infrared signal that described infrared inductor is sensed; The inverting input of described signal amplification chip connects respectively the 6th resistance, the 4th electric capacity and the 7th resistance, and described the 7th resistance is by the 5th capacity earth; Described the 6th resistance connects the output terminal of described signal amplification chip, first of described signal amplification chip triggers the blocking time adjustable side and connects the positive ends of the 7th electric capacity by Timing resistance, second triggers the positive ends that blocking time is regulated described the 7th electric capacity of termination, described the 7th capacity earth; The output delay time of described signal amplification chip is regulated termination the 8th electric capacity, and launch time, adjustable side connect described the 8th electric capacity by the 8th resistance; Infrared signal after the output pin output of described signal amplification chip is amplified.
Described infrared signal coding circuit comprises: coding chip, and the power end of described coding chip connects respectively the 9th resistance and field effect transistor, and described field effect transistor connects the 12V power supply, and described the 9th resistance connects the anode of diode, the plus earth of described diode; Described field effect transistor connects the tenth resistance and the 11 resistance successively, and described the 11 resistance connects the collector of the first triode, the infrared signal after the base stage access of described the first triode is amplified; First signal pins of described coding chip, second signal pins, tribute signal pin and the 4th signal pins are connected the first button, the second button, the 3rd button and the 4th button successively, and described the first button, described the second button, described the 3rd button and the described the 4th are pressed the emitter of described the first triode of keyed jointing; Described first signal pins connects that the 12 resistance, described second signal pins connect the 13 resistance, described tribute signal pin connects the 14 resistance, described the 4th signal pins connects the 15 resistance, described the 12 resistance, described the 13 resistance, described the 14 resistance and described the 15 resistance eutral grounding; The position signalling of the output pin output encoder of described coding chip.
The beneficial effect of technical scheme provided by the invention is: the position encoded circuit structure of this infrared signal amplifier stage is simple, realized the output of position signalling by infrared induction and signal amplification circuit, infrared signal coding circuit, this circuit provides stable position signalling, has avoided extraneous interference and unnecessary economic loss.
The accompanying drawing explanation
The structural representation that Fig. 1 is the position encoded circuit of infrared signal amplifier stage;
The circuit theory diagrams that Fig. 2 is infrared induction and signal amplification circuit;
The circuit theory diagrams that Fig. 3 is the infrared signal coding circuit.
In accompanying drawing, being listed as follows of each parts:
1: infrared induction and signal amplification circuit; 2: the infrared signal coding circuit;
3: power circuit; DO-DATA: position encoded;
Q5: infrared inductor; R12: the first resistance;
R14: the second resistance; R15: the 3rd resistance;
C6: the first electric capacity; C7: the second electric capacity;
C8: the 3rd electric capacity; U2: signal amplification chip;
IB: bias current arranges end; R16: the 4th resistance;
U2: signal amplification chip; 1IN+: in-phase input end;
R20: the 5th resistance; 1IN-: inverting input;
R25: the 6th resistance; C11: the 4th electric capacity;
R18: the 7th resistance; C12: the 5th electric capacity;
1OUT: the output terminal of signal amplification chip U2; RESET: resetting pin;
C15: the 6th electric capacity; RR2: first triggers the blocking time adjustable side;
TR21: Timing resistance; RC2: second triggers the blocking time adjustable side;
C17: the 7th electric capacity; RC1: output delay time adjustable side;
C16: the 8th electric capacity; RR1: launch time adjustable side;
R24: the 8th resistance; A: but the repeated trigger control end;
VO: output pin; OUT1: the infrared signal after amplification;
U1: coding chip; R1: the 9th resistance;
Q6: field effect transistor; LED: diode;
R8: the tenth resistance; R7: the 11 resistance;
Q4: the first triode; D0: first signal pins;
D1: second signal pins; D2: tribute signal pin;
D3: the 4th signal pins; S1: the first button;
S2: the second button; S3: the 3rd button;
S4: the 4th button; R6: the 12 resistance;
R5: the 13 resistance; R4: the 14 resistance;
R3: the 15 resistance; DOUT: output pin.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
In order to simplify circuit structure, improve the stability of position signalling, reduce economic loss, the embodiment of the present invention provides a kind of infrared signal amplifier stage position encoded circuit, referring to Fig. 1, described below:
The position encoded circuit of this infrared signal amplifier stage comprises: infrared induction and signal amplification circuit 1, infrared signal coding circuit 2 and power circuit 3, power circuit 3 provides the 5V power supply for infrared induction and signal amplification circuit 1, and power circuit 3 provides the 12V power supply for infrared signal coding circuit 2; Infrared induction and signal amplification circuit 1 induction infrared signal transfer in infrared signal coding circuit 2 after amplifying processing; The infrared signal that infrared signal coding circuit 2 receives after amplifying becomes position signalling the output of coding by inner coder transitions.
Referring to Fig. 2, infrared induction and signal amplification circuit 1 comprise: infrared inductor Q5, the external biasing circuit formed by the first resistance R 12, the second resistance R 14, the 3rd resistance R 15 and the 3rd capacitor C 8 of infrared inductor Q5, the first resistance R 12 meets respectively the first capacitor C 6, the second capacitor C 7 and 5V power vd D, the power input VC of 5V power vd D access signal amplification chip U2, the bias current of signal amplification chip U2 arranges end IB by the 4th resistance R 16 ground connection; The infrared signal that the in-phase input end 1IN+ of signal amplification chip U2 senses by the 5th resistance R 20 receiving infrared-ray inductor Q5; The inverting input 1IN-of signal amplification chip U2 connects respectively the 6th resistance R 25, the 4th capacitor C 11 and the 7th resistance R 18, the 7th resistance R 18 is by the 5th capacitor C 12 ground connection (wherein, the 4th capacitor C 11, the 7th resistance R 18 and the 5th capacitor C 12 provide stable voltage for signal amplification chip U2); The output terminal 1OUT(that the 6th resistance R 25 meets signal amplification chip U2 wherein, the output terminal 1OUT of signal amplification chip U2 provides feedback voltage through the 6th resistance R 25 for inverting input, more stable to guarantee the output amplifying signal), the resetting pin RESET of signal amplification chip U2 is by the 6th capacitor C 15 ground connection; First of signal amplification chip U2 triggers blocking time adjustable side RR2 and connects the positive ends of the 7th capacitor C 17 by Timing resistance TR21, and second triggers the positive ends that blocking time adjustable side RC2 connects the 7th capacitor C 17, the 7th capacitor C 17 ground connection; The output delay time adjustable side RC1 of signal amplification chip U2 connects the 8th capacitor C 16, and launch time, adjustable side RR1 connect the 8th capacitor C 16 by the 8th resistance R 24; Wherein, Timing resistance TR21, the 7th capacitor C 17, the 8th resistance R 24 and the 8th capacitor C 16 are for regulating time constant; But the repeated trigger control end A of signal amplification chip U2 for allowing repeated trigger, is not reproducible triggering during for " 0 " when for " 1 "; Infrared signal after the output pin VO output of signal amplification chip U2 is amplified, that is, the infrared signal OUT1 after amplification is transported in infrared signal coding circuit 2 by output pin VO, and all the other pins are unsettled.
Wherein, the first capacitor C 6 and the second capacitor C 7 are power filtering capacitor, the in-phase input end 1IN+(that the infrared signal of sensing is input to signal amplification chip U2 through the 5th resistance R 20 is 14 pin), the inverting input 1IN-(of signal amplification chip U2 i.e. 15 pin) by the 4th capacitor C 11, the 7th resistance R 18, the 5th capacitor C 12 provides stable reference voltage for signal amplification chip U2, the output terminal IOUT(of signal amplification chip U2 i.e. 16 pin) provide feedback voltage through the 6th resistance R 25 for inverting input, more stable to guarantee the output amplifying signal, 11 pin of signal amplification chip U2 are forbidden end for triggering, C14 is filter capacitor, bias current arranges i.e. 10 pin of end IB() by the 4th resistance R 16, be connected to the ground.
Referring to Fig. 3, infrared signal coding circuit 2 comprises: coding chip U1, and the power end VCC of coding chip U1 meets respectively the 9th resistance R 1 and field effect transistor Q6, and field effect transistor Q6 connects the 12V power supply, the 9th resistance R 1 connects the anode of diode (LED), the plus earth of diode (LED); Field effect transistor Q6 connects the collector that the tenth resistance R 8 and the 11 resistance R 7, the 11 resistance R 7 meet the first triode Q4, the infrared signal OUT1 after the base stage access of the first triode Q4 is amplified successively; First signal pins D0 of coding chip U1, second signal pins D1, tribute signal pin D2 and the 4th signal pins D3 are connected the first button S1, the second button S2, the 3rd button S3 and the 4th button S4 successively, and the first button S1, the second button S2, the 3rd button S3 and the 4th button S4 connect the emitter of the first triode Q4; First signal pins D0 connects that the 12 resistance R 6, second signal pins D1 connect the 13 resistance R 5, tribute signal pin D2 connects the 14 resistance R 4, the 4th signal pins D3 connects the 15 resistance R 3, the 12 resistance R the 6, the 13 resistance R the 5, the 14 resistance R 4 and the 15 resistance R 3 ground connection; The position signalling DO-DATA of the output pin DOUT output encoder of coding chip U1.
Wherein, the Main Function of infrared signal coding circuit 2 is the concrete orientation of reporting to the police in order to determine, where there is the warning situation to occur, by signal is encoded to realize, coding coding chip SC2262 completes, wherein the 4th signal pins D3(is 10 pin), tribute signal pin D2(i.e. 11 pin), second signal pins D1(i.e. 12 pin), first signal pins D0(is 13 pin) be a position signal, high level is effective, number of combinations is 4x3x2x1, by pressing the first button S1, the second button S2, the 3rd button S3 and the 4th button S4 can form different codings, this different coding is exactly the position encoded of place of reporting to the police.
The principle of work of this infrared signal coding circuit 2 is as follows: the power unit that BT is whole circuit is whole infrared signal coding circuit 2 power supplies, and C1 is power filtering capacitor, and Q6 is field effect transistor, controls power supply to coding chip SC2262 power supply and stops power supply.The divider resistance that the tenth resistance R 8 and the 11 resistance R 7 are the first triode Q4, input to the base stage of Q4 after amplifying as upper level infrared induction signal OUT1, control the Q4 conducting, then Q6 conducting, power supply BT is that SC2262 powers through 18 pin, coding chip SC2262 starts working, by shifting to an earlier date preset position button---the button short circuit that will encode with U-LINK judges who is pressed, the coding of process coding chip SC2262 becomes different coded messages to be exported via 17 pin DOUT, and R2 selects resistance for the coding frequency.In this circuit, the R3 of coding chip SC2262, R4, R5, R6 are pull down resistor, and pin 1, pin 2, pin 3, pin 4, pin 5, pin 6, pin 7 are unsettled.Positional information through coding is 17 pin via output pin DOUT() output.
Wherein, when the position encoded circuit of infrared ray amplified signal level and the supporting application of infrared signal transmission circuit of the prior art, can also form a complete infra-red code alarming wireless transmitter, the position encoded circuit structure of this infrared signal amplifier stage is simple, by infrared induction and signal amplification circuit, infrared signal coding circuit outgoing position signal, this circuit provides stable position signalling, has avoided extraneous interference and unnecessary economic loss.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (3)
1. the position encoded circuit of infrared signal amplifier stage, is characterized in that, the position encoded circuit of described infrared signal amplifier stage comprises: infrared induction and signal amplification circuit, infrared signal coding circuit and power circuit,
Described power circuit provides the 5V power supply for described infrared induction and signal amplification circuit, and described power circuit provides the 12V power supply for described infrared signal coding circuit; Described infrared induction and signal amplification circuit induction infrared signal transfer in described infrared signal coding circuit after amplifying processing; The infrared signal that described infrared signal coding circuit receives after amplifying becomes the position signalling of coding by inner coder transitions, and output.
2. the position encoded circuit of a kind of infrared signal amplifier stage according to claim 1, it is characterized in that, described infrared induction and signal amplification circuit comprise: infrared inductor, the external biasing circuit formed by the first resistance, the second resistance, the 3rd resistance and the 3rd electric capacity of described infrared inductor, described the first resistance connects respectively the first electric capacity, the second electric capacity and 5V power supply, the power input of 5V power supply access signal amplification chip, the bias current of described signal amplification chip arranges end by the 4th resistance eutral grounding; The in-phase input end of described signal amplification chip receives by the 5th resistance the infrared signal that described infrared inductor is sensed; The inverting input of described signal amplification chip connects respectively the 6th resistance, the 4th electric capacity and the 7th resistance, and described the 7th resistance is by the 5th capacity earth; Described the 6th resistance connects the output terminal of described signal amplification chip, first of described signal amplification chip triggers the blocking time adjustable side and connects the positive ends of the 7th electric capacity by Timing resistance, second triggers the positive ends that blocking time is regulated described the 7th electric capacity of termination, described the 7th capacity earth; The output delay time of described signal amplification chip is regulated termination the 8th electric capacity, and launch time, adjustable side connect described the 8th electric capacity by the 8th resistance; Infrared signal after the output pin output of described signal amplification chip is amplified.
3. the position encoded circuit of a kind of infrared signal amplifier stage according to claim 1, it is characterized in that, described infrared signal coding circuit comprises: coding chip, the power end of described coding chip connects respectively the 9th resistance and field effect transistor, described field effect transistor connects the 12V power supply, described the 9th resistance connects the anode of diode, the plus earth of described diode; Described field effect transistor connects the tenth resistance and the 11 resistance successively, and described the 11 resistance connects the collector of the first triode, the infrared signal after the base stage access of described the first triode is amplified; First signal pins of described coding chip, second signal pins, tribute signal pin and the 4th signal pins are connected the first button, the second button, the 3rd button and the 4th button successively, and described the first button, described the second button, described the 3rd button and the described the 4th are pressed the emitter of described the first triode of keyed jointing; Described first signal pins connects that the 12 resistance, described second signal pins connect the 13 resistance, described tribute signal pin connects the 14 resistance, described the 4th signal pins connects the 15 resistance, described the 12 resistance, described the 13 resistance, described the 14 resistance and described the 15 resistance eutral grounding; The position signalling of the output pin output encoder of described coding chip.
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| CN201310430026.5A CN103473899B (en) | 2013-09-18 | 2013-09-18 | The position encoded circuit of a kind of infrared signal amplifier stage |
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| CN201310430026.5A CN103473899B (en) | 2013-09-18 | 2013-09-18 | The position encoded circuit of a kind of infrared signal amplifier stage |
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| CN103473899A true CN103473899A (en) | 2013-12-25 |
| CN103473899B CN103473899B (en) | 2016-02-10 |
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Citations (6)
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| CN203503128U (en) * | 2013-09-18 | 2014-03-26 | 天津市畅悦电子科技有限公司 | Infrared signal amplification stage location coding circuit |
-
2013
- 2013-09-18 CN CN201310430026.5A patent/CN103473899B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4786831A (en) * | 1984-12-17 | 1988-11-22 | Hughes Aircraft Company | Integrating capacitively coupled transimpedance amplifier |
| CN2266166Y (en) * | 1996-08-29 | 1997-10-29 | 苏洪峰 | Heat release external wireless theftproof device |
| CN2329053Y (en) * | 1997-12-22 | 1999-07-14 | 王迎华 | Aggregation type multi-channel alarm |
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| Title |
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