CN108631755A - A kind of square-wave pulse output resonance matching unit - Google Patents
A kind of square-wave pulse output resonance matching unit Download PDFInfo
- Publication number
- CN108631755A CN108631755A CN201810657736.4A CN201810657736A CN108631755A CN 108631755 A CN108631755 A CN 108631755A CN 201810657736 A CN201810657736 A CN 201810657736A CN 108631755 A CN108631755 A CN 108631755A
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- photoelectrical coupler
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- 230000005611 electricity Effects 0.000 claims description 4
- 230000005622 photoelectricity Effects 0.000 claims 1
- 230000007812 deficiency Effects 0.000 abstract description 2
- 210000001367 artery Anatomy 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/01—Details
- H03K3/017—Adjustment of width or dutycycle of pulses
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/0175—Coupling arrangements; Interface arrangements
- H03K19/018—Coupling arrangements; Interface arrangements using bipolar transistors only
- H03K19/01825—Coupling arrangements, impedance matching circuits
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Testing Of Individual Semiconductor Devices (AREA)
- Pulse Circuits (AREA)
Abstract
Type of the present invention provides a kind of resonance matching unit with full duty ratio direct current 0 ~ 30v square-wave pulse output functions, and problem to be solved is：The problem of driving capability deficiency when needing fixed duty cycle pulse to export DC voltage, by using the characteristic of NPN and PNP triode and coordinate optocoupler that can export arbitrary DC pulse voltage signal of 0 ~ 30v of direct current duty cycle ranges 0 ~ 100%, pulse duty factor and frequency can be adjusted by adjusting the value of build-out resistor and capacitance.
Description
Technical field
The present invention relates to field of circuit control, specifically a kind of square-wave pulse exports resonance matching unit.
Background technology
It is tested before the manufacture of XGZ type auto-passing neutral section control system main computer boxes, a test index is
Sensitivity test needs the direct current square wave pulse voltage that 0 ~ 10v is inputted to the vehicle sense coil input end of host, and peak pulse duration needs
It to be adjusted according to scene actual needs, most start us and pulsewidth control source is carried out using oscillograph, but due to oscillography
The output voltage values of device are limited, and driving capability deficiency can not make vehicle sense coil generate input signal, Wu Fajin when more than 10v
Row test, was programmed by PLC was inputted with included relay tip later, but since relay tip is that machinery touches
It is too short that point carries out pulse output service life for a long time, so enough driving capabilities can be had and can root by needing to develop one kind
The tuned cell of duty ratio adjustment is carried out according to demand.
Invention content
The present invention relates to the resonance matching unit that one kind can export the full duty ratio square-wave pulses of 0 ~ 30v of direct current, Ke Yitong
It crosses setting output area and to adjust build-out resistor, the value of capacitance straight come the arbitrary pulsewidth square-wave pulse between exporting from 0 to 100%
Galvanic electricity pressure, DC voltage input range is between 0 ~ 30v.
In order to solve the above technical problems, the object of the present invention is to provide one kind having full duty ratio direct current 0 ~ 30v square wave arteries and veins
Rush the resonance matching unit of output function.
The object of the present invention is achieved like this：A kind of square-wave pulse output resonance matching unit, including timer chip,
Triode, photoelectrical coupler, are characterized in that：The resonance matching unit further include have external power supply terminal, build-out resistor,
With capacitance and diode, the quantity of photoelectrical coupler is two, respectively U2 and U3, the output end of timer chip pulse signal
It is connect, while being connect with the base stage of NPN triode Q2, PNP triode with the base stage of PNP triode Q1 by a current-limiting resistance
The emitter of Q1 is connect with the pin 2 of photoelectrical coupler U2, and the pin 1 of photoelectrical coupler U2 passes through current-limiting resistance R3 and signal electricity
The pin 16 of source 5V+ connections, photoelectrical coupler U2 is connect with the pin 1 of external power supply terminal CZ2, the pin of photoelectrical coupler U2
15 connect with the pin 2 of external power supply leading-out terminal CZ2, and the pin 1 of CZ2 is the input terminal of outer signal power supply, the pin of CZ2
2 be the output end of outer signal power supply；The collector pin 1 of NPN triode Q2 is connect with the pin 2 of photoelectrical coupler U3, light
The pin 1 of electric coupler U3 is connect by current-limiting resistance R4 with signal power source 5V+, pin 16 and the external electricity of photoelectrical coupler U3
The pin 3 of source terminal CZ2 connects, and the pin 15 of photoelectrical coupler U2 is connect with the pin 4 of external power supply leading-out terminal CZ2, CZ2
Pin 3 be outer signal power supply input terminal, the pin 4 of CZ2 is the output end of outer signal power supply.
Advantages of the present invention and advantageous effect are：By using 555 timer chips spy is exported using the square wave of itself
This resonance matching unit with full duty ratio direct current 0 ~ 30v square-wave pulse output functions, this tune are developed on the basis of property
Humorous matching unit is simple in structure, at low cost, long lifespan, failure rate are low, is applicable in square wave arteries and veins of the various input voltages between 0 ~ 30v
The application for rushing input, improves the reliability of XGZ type auto-passing neutral section control system host tests.
Description of the drawings
Fig. 1 is the electrical schematic diagram of the present invention.
Specific implementation mode
As shown in Figure 1, the present invention relates to a kind of square-wave pulses to export resonance matching unit, including timer chip, three poles
Pipe, photoelectrical coupler, wherein：The resonance matching unit further includes having external power supply terminal, build-out resistor, matching capacitance and two poles
The quantity of pipe, photoelectrical coupler is two, and respectively U2 and U3, the output end of timer chip pulse signal pass through a current limliting
Resistance is connect with the base stage of PNP triode Q1, while being connect with the base stage of NPN triode Q2, the emitter of PNP triode Q1 with
The pin 2 of photoelectrical coupler U2 connects, and the pin 1 of photoelectrical coupler U2 is connect by current-limiting resistance R3 with signal power source 5V+, light
The pin 16 of electric coupler U2 is connect with the pin 1 of external power supply terminal CZ2, the pin 15 and external power supply of photoelectrical coupler U2
The pin 2 of leading-out terminal CZ2 connects, and the pin 1 of CZ2 is the input terminal of outer signal power supply, and the pin 2 of CZ2 is outer signal
The output end of power supply；The collector pin 1 of NPN triode Q2 is connect with the pin 2 of photoelectrical coupler U3, photoelectrical coupler U3's
Pin 1 is connect by current-limiting resistance R4 with signal power source 5V+, the pin 16 and external power supply terminal CZ2's of photoelectrical coupler U3
Pin 3 connects, and the pin 15 of photoelectrical coupler U2 is connect with the pin 4 of external power supply leading-out terminal CZ2, and the pin 3 of CZ2 is outer
The input terminal of signal power source is connect, the pin 4 of CZ2 is the output end of outer signal power supply.
Further, the quantity of build-out resistor is two, and the quantity of matching capacitance is one.
Further, one of build-out resistor passes through the defeated of a resistance and diode and timer chip pulse signal
Outlet connects.
Further, another build-out resistor is connected with a pin of photoelectrical coupler, and is connected simultaneously with matching capacitance
Ground connection.
Embodiment one：
Entire resonance matching unit include 555 timer chips, PNP triode, photoelectrical coupler, build-out resistor, matching capacitance,
Switch the components such as relay, light emitting diode composition.The characteristic of 555 timing chips itself is to export the duty ratio of square-wave signal
For can only between 50% ~ 100% range, we inverted by using PNP diode pair output waveforms and by optocoupler into
Row isolation, the duty ratio model that thus can be generated a stabilization by the output end of optocoupler and can be exported between 0 ~ 30V
The square-wave pulse being trapped among between 0 ~ 50%.Tuned cell can be worth by the way that output area and adjustment build-out resistor, capacitance is arranged
To meet the signal output of the arbitrary duty ratio between different frequency 0 ~ 100%.
Referring to attached drawing 1, the pin 3 of NE555 timing chips U1 is that the output end of pulse signal passes through current-limiting resistance R2 and PNP
The connection of base stage pin 2 of triode Q1 is connect with the base stage pin 2 of NPN triode Q2 simultaneously.
The emitter pin 3 of PNP triode Q1 is connect with the pin 2 of optocoupler U2, and the pin 1 of optocoupler U2 passes through current-limiting resistance
R3 is connect with signal power source 5V+, and the pin 16 of optocoupler U2 is connect with the pin 1 of external power supply terminal CZ2, the pin 15 of optocoupler U2
It is connect with the pin 2 of external power supply leading-out terminal CZ2, the pin 1 of CZ2 is the input terminal of outer signal power supply, the pin 2 of CZ2
For the output end of outer signal power supply.After tuned cell is powered, the pin 3 of NE555 timing chips U1 can export square-wave pulse,
When pin 3 is high level, the base stage of triode Q1 is high level state, at this time the emitter of triode Q1 due to by with light
It is high level state that the input terminal of coupling U2 is connect also with power supply 5V+, does not have electric current to cross between emitter and base stage for closed state,
So triode does not turn on, the input terminal of optocoupler U2 is also not turned on as closed state；Three poles when pin 3 is low level on the contrary
Electric current is generated between the emitter and base stage of pipe Q1 makes triode at conducting state, since the emitter and collector of triode is led
Logical that the input terminal of optocoupler U2 is made also to simultaneously turn on, optocoupler is connected at this time, accesses CZ2's by outer signal power output terminal
Signal power source can form a pulse signal opposite with 3 waveform of pin of NE555 timing chips U1 according to the state of optocoupler
Power supply exports, and duty cycle range is between 0 ~ 50%.
The collector pin 1 of NPN triode Q2 is connect with the pin 2 of optocoupler U3, and the pin 1 of optocoupler U3 passes through current-limiting resistance
R4 is connect with signal power source 5V+, and the pin 16 of optocoupler U3 is connect with the pin 3 of external power supply terminal CZ2, the pin 15 of optocoupler U2
It is connect with the pin 4 of external power supply leading-out terminal CZ2, the pin 3 of CZ2 is the input terminal of outer signal power supply, the pin 4 of CZ2
For the output end of outer signal power supply.After tuned cell is powered, the pin 3 of NE555 timing chips U1 can export square-wave pulse,
When pin 3 is high level, the base stage of triode Q2 is high level state, at this time current collection extremely low level state, triode Q2's
Base stage and collector before there is electric current to flow through triode Q2 is made be connected, due to the collector pole of triode Q2 and emitter conducting
The input terminal of optocoupler U3 is set also to simultaneously turn on, optocoupler is connected at this time.On the contrary when pin 3 is low level the base stage of triode Q2 with
Emitter no current, which generates, is in cut-off state, and triode Q2 is not turned on, and optocoupler is also at the state of not turning on, and passes through outer signal
The signal power source that power output terminal accesses CZ2 accesses can form one and NE555 timing chips U1 according to the state of optocoupler
The identical pulse signal power supply output of 3 waveform of pin, duty cycle range is between 50 ~ 100%.
Desired duty ratio and frequency can be obtained by adjusting RA1, RA2, C2 value root；Such as want to obtain duty ratio be
20%, the square wave frequency that frequency is 100 hertz, it is 0 ~ 50% that output area is arranged first, and matching can be calculated by formula
Resistance RA1=8.64 kilo-ohm, RA2=2.88 kilo-ohm, the microfarads of C2=1, adjust corresponding build-out resistor and capacitance is based on output and thinks
Obtained pulse.
Claims (4)
1. a kind of square-wave pulse exports resonance matching unit, including timer chip, triode, photoelectrical coupler, feature exist
In：The resonance matching unit further includes having external power supply terminal, build-out resistor, matching capacitance and diode, photoelectrical coupler
Quantity is two, and respectively U2 and U3, the output end of timer chip pulse signal pass through a current-limiting resistance and PNP triode
The base stage of Q1 connects, while being connect with the base stage of NPN triode Q2, and the emitter of PNP triode Q1 is with photoelectrical coupler U2's
Pin 2 connects, and the pin 1 of photoelectrical coupler U2 is connect by current-limiting resistance R3 with signal power source 5V+, the pipe of photoelectrical coupler U2
Foot 16 is connect with the pin 1 of external power supply terminal CZ2, the pin 15 and external power supply leading-out terminal CZ2's of photoelectrical coupler U2
Pin 2 connects, and the pin 1 of CZ2 is the input terminal of outer signal power supply, and the pin 2 of CZ2 is the output end of outer signal power supply；
The collector pin 1 of NPN triode Q2 is connect with the pin 2 of photoelectrical coupler U3, and the pin 1 of photoelectrical coupler U3 passes through current limliting
Resistance R4 is connect with signal power source 5V+, and the pin 16 of photoelectrical coupler U3 is connect with the pin 3 of external power supply terminal CZ2, photoelectricity
The pin 15 of coupler U2 is connect with the pin 4 of external power supply leading-out terminal CZ2, and the pin 3 of CZ2 is the defeated of outer signal power supply
Enter end, the pin 4 of CZ2 is the output end of outer signal power supply.
2. a kind of square-wave pulse according to claim 1 exports resonance matching unit, it is characterised in that：The number of build-out resistor
Amount is two, and the quantity of matching capacitance is one.
3. a kind of square-wave pulse according to claim 2 exports resonance matching unit, it is characterised in that：One of matching
Resistance is connect by a resistance and diode with the output end of timer chip pulse signal.
4. a kind of square-wave pulse according to claim 2 exports resonance matching unit, it is characterised in that：Another matching electricity
Resistance is connected with a pin of photoelectrical coupler, and is connected and is grounded with matching capacitance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810657736.4A CN108631755B (en) | 2018-06-25 | 2018-06-25 | Square wave pulse output tuning matching unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810657736.4A CN108631755B (en) | 2018-06-25 | 2018-06-25 | Square wave pulse output tuning matching unit |
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| Publication Number | Publication Date |
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| CN108631755A true CN108631755A (en) | 2018-10-09 |
| CN108631755B CN108631755B (en) | 2024-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810657736.4A Active CN108631755B (en) | 2018-06-25 | 2018-06-25 | Square wave pulse output tuning matching unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116155259A (en) * | 2023-01-10 | 2023-05-23 | 西安兴汇电力科技有限公司 | Thick film circuit for prolonging service life of optocoupler |
Citations (5)
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| US20080252281A1 (en) * | 2006-09-29 | 2008-10-16 | Innocom Technology (Shenzhen) Co., Ltd. | Switching power supply circuit having soft start circuit |
| CN101944853A (en) * | 2010-03-19 | 2011-01-12 | 郁百超 | Green power inverter |
| US20110068723A1 (en) * | 2003-07-22 | 2011-03-24 | Maiocchi Sergio A | System For Operating DC Motors And Power Converters |
| CN203896193U (en) * | 2014-04-23 | 2014-10-22 | 深圳市时代创新科技有限公司 | Wide voltage input power supply module |
| CN208337525U (en) * | 2018-06-25 | 2019-01-04 | 沈阳铁路信号有限责任公司 | A kind of square-wave pulse output resonance matching unit |
-
2018
- 2018-06-25 CN CN201810657736.4A patent/CN108631755B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110068723A1 (en) * | 2003-07-22 | 2011-03-24 | Maiocchi Sergio A | System For Operating DC Motors And Power Converters |
| US20080252281A1 (en) * | 2006-09-29 | 2008-10-16 | Innocom Technology (Shenzhen) Co., Ltd. | Switching power supply circuit having soft start circuit |
| CN101944853A (en) * | 2010-03-19 | 2011-01-12 | 郁百超 | Green power inverter |
| CN203896193U (en) * | 2014-04-23 | 2014-10-22 | 深圳市时代创新科技有限公司 | Wide voltage input power supply module |
| CN208337525U (en) * | 2018-06-25 | 2019-01-04 | 沈阳铁路信号有限责任公司 | A kind of square-wave pulse output resonance matching unit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116155259A (en) * | 2023-01-10 | 2023-05-23 | 西安兴汇电力科技有限公司 | Thick film circuit for prolonging service life of optocoupler |
| CN116155259B (en) * | 2023-01-10 | 2023-07-18 | 西安兴汇电力科技有限公司 | Thick film circuit for prolonging service life of optocoupler |
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| CN108631755B (en) | 2024-01-30 |
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