CN207113894U - A kind of band isolates jamproof relatively output circuit - Google Patents
A kind of band isolates jamproof relatively output circuit Download PDFInfo
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- CN207113894U CN207113894U CN201721170914.8U CN201721170914U CN207113894U CN 207113894 U CN207113894 U CN 207113894U CN 201721170914 U CN201721170914 U CN 201721170914U CN 207113894 U CN207113894 U CN 207113894U
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Abstract
The utility model provides a kind of band and isolates jamproof relatively output circuit, including sensor interface J1, first stage amplifier, linear optical coupling IC 1, threshold potential device POT2, triode Q2 is used in output, output interface socket J2, wherein, the output end of the sensor interface J1 is connected with the input of pole amplifier, the output end of the first stage amplifier is connected with the input of the linear optical coupling IC 1, the output end of the linear optical coupling IC 1 input with the threshold potential device POT2 respectively, output interface socket J2 pin 3 connects, the output end of the threshold potential device POT2 is connected with the output with triode Q2 base stage.The beneficial effects of the utility model are：The noise signal in signal source can be filtered well, while amplified signal source, by linear optical coupling isolation, suppression common mode interference, after comparison circuit, stable voltage can be obtained.
Description
Technical field
It the utility model is related to and compare output circuit, more particularly to a kind of band isolates jamproof relatively output circuit.
Background technology
In automation equipment workplace, because the signal voltage of collection in worksite can not use directly to computer, scene is adopted
The signal of collection is analog signalses, for example pressure sensor, and it is more that the signal such as temperature sensor is disturbed big and spurious signal.
The content of the invention
In order to solve the problems of the prior art, the utility model provides a kind of band and isolates jamproof relatively output electricity
Road.
The utility model provides a kind of band and isolates jamproof relatively output circuit, including sensor interface J1, one-level
Triode Q2, output interface socket J2 are used in amplifier, linear optical coupling IC 1, threshold potential device POT2, output, wherein,
The output end of the sensor interface J1 is connected with the input of pole amplifier, the output end of the first stage amplifier with
The input connection of the linear optical coupling IC 1, the output end of the linear optical coupling IC 1 respectively with it is described
Threshold potential device POT2 input, output interface socket J2 pin 3 connects, the output end of the threshold potential device POT2 with
The output is connected with triode Q2 base stage, and the output is with triode Q2 colelctor electrode with the output interface socket J2's
Pin 2 connects, the grounded emitter of the output triode Q2.
As further improvement of the utility model, the first stage amplifier include Regulate signal amplification regulation resistance R7 and
Amplifier Q1, the sensor interface J1 output end are connected with Regulate signal amplification regulation resistance R7 one end, described
The Regulate signal amplification regulation resistance R7 other end is connected with the base stage of the amplifier Q1, and the emitter stage of the amplifier Q1 connects
Ground, the colelctor electrode of the amplifier Q1 are connected with the pin 2 of the linear optical coupling IC 1.The linear optical coupling integrates
The source bias resistance R3 of pin 1 of IC circuit 1 plays metering function, ensures optocoupler transmitting terminal normal work.
As further improvement of the utility model, the collector and emitter of the amplifier Q1, which is connected with, filters out noise
The electric capacity C3 and electric capacity C4 of signal, the electric capacity C3 and electric capacity C4 are in parallel.
As further improvement of the utility model, pin 2 and the Regulate signal of the sensor interface J1 are amplified
Regulation resistance R7 one end connection, the pin 1 of the sensor interface J1 are connected with sensor current-limiting resistance R2, the sensor
Current-limiting resistance R2 another termination power, the pin 3 of the sensor interface J1 are grounded, and the input signal of sensor is through the biography
Sensor interface J1 pin 2 inputs, and amplifies regulation resistance R7 and amplifier Q1 by the input signal of sensor by Regulate signal
Amplification, noise signal is filtered out by the electric capacity C3 and electric capacity C4, high-frequency interferencing signal is removed, leaves low frequency signal.
As further improvement of the utility model, pin 7 and the threshold value electricity of the linear optical coupling IC 1
Position device POT2 connections, the pin 7 of the linear optical coupling IC 1 are connected with output biasing resistor R4.
As further improvement of the utility model, the pin 8 of the linear optical coupling IC 1 is connected with power supply and gone
Lotus root electric capacity C1.
As further improvement of the utility model, the output end of the threshold potential device POT2 and three poles of the output
Base stage current-limiting resistance R9 is in series between pipe Q2 base stage.
As further improvement of the utility model, the output is connected with operating resistance R5 with triode Q2 colelctor electrode
It is described defeated with operating resistance R11, another termination power of the operating resistance R5, the other end ground connection of the operating resistance R11
Go out between the base stage with triode Q2, base stage current-limiting resistance R9 to be connected with operating resistance R10, the operating resistance R10's is another
End ground connection.
As further improvement of the utility model, the output is connected with triode Q2 colelctor electrode filters out noise letter
Number electric capacity C6 and electric capacity C7, the other end of the electric capacity C6 and electric capacity C7 be grounded respectively, the output triode Q2 collection
Electrode is connected with the pin 2 of the output interface socket J2.
As further improvement of the utility model, the pin 1 of the output interface socket J2 connects power supply, described defeated
Power filtering capacitor C2 is connected between outgoing interface socket J2 pin 2, power supply.
The beneficial effects of the utility model are：By such scheme, the noise signal in signal source can be filtered well,
Amplified signal source simultaneously, by linear optical coupling isolation, suppression common mode interference, after comparison circuit, stable voltage can be obtained,
Output end can be analog quantity or digital quantity.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of the jamproof relatively output circuit of band isolation of the utility model.
Fig. 2 is a kind of linear optical coupling IC 1 of the jamproof relatively output circuit of band isolation of the utility model
Schematic diagram.
Fig. 3 is a kind of output waveform figure of the jamproof relatively output circuit of band isolation of the utility model.
Fig. 4 is a kind of signal of the jamproof relatively attaching plug of the sensor of output circuit of band isolation of the utility model
Figure.
Embodiment
The utility model is described in further detail for explanation and embodiment below in conjunction with the accompanying drawings.
As shown in Figures 1 to 4, a kind of band isolates jamproof relatively output circuit, including sensor interface J1, one-level are put
Triode Q2, output interface socket J2 are used in big device, linear optical coupling IC 1, threshold potential device POT2, output, wherein, institute
The output end for stating sensor interface J1 is connected with the input of pole amplifier, the output end of the first stage amplifier and institute
State the input connection of linear optical coupling IC 1, the output end of the linear optical coupling IC 1 respectively with the threshold
Value potentiometer POT2 input, output interface socket J2 pin 3 connects, the output end of the threshold potential device POT2 and institute
State output triode Q2 base stage connection, the colelctor electrode of the output triode Q2 and drawing for the output interface socket J2
Pin 2 connects, the grounded emitter of the output triode Q2.
As shown in Figures 1 to 4, the first stage amplifier includes Regulate signal amplification regulation resistance R7 and amplifier Q1, institute
The output end for stating sensor interface J1 is connected with Regulate signal amplification regulation resistance R7 one end, the Regulate signal amplification
The regulation resistance R7 other end is connected with the base stage of the amplifier Q1, the grounded emitter of the amplifier Q1, the amplification
Device Q1 colelctor electrode is connected with the pin 2 of the linear optical coupling IC 1.The linear optical coupling IC 1 draws
The source bias resistance R3 of pin 1 plays metering function, ensures optocoupler transmitting terminal normal work.
As shown in Figures 1 to 4, the collector and emitter of the amplifier Q1 is connected with the electric capacity C3 for filtering out noise signal
It is in parallel with electric capacity C4, the electric capacity C3 and electric capacity C4.
As shown in Figures 1 to 4, the pin 2 of the sensor interface J1 is with Regulate signal amplification regulation resistance R7's
One end connects, and the pin 1 of the sensor interface J1 is connected with sensor current-limiting resistance R2, the sensor current-limiting resistance R2's
Another termination power, the pin 3 of the sensor interface J1 are grounded, and the input signal of sensor is through the sensor interface J1's
Pin 2 inputs, and amplifies regulation resistance R7 and amplifier Q1 by Regulate signal and amplifies the input signal of sensor, by described
Electric capacity C3 and electric capacity C4 filters out noise signal, removes high-frequency interferencing signal, leaves low frequency signal.
As shown in Figures 1 to 4, the pin 7 of the linear optical coupling IC 1 connects with the threshold potential device POT2
Connect, the pin 7 of the linear optical coupling IC 1 is connected with output biasing resistor R4.
As shown in Figures 1 to 4, the pin 8 of the linear optical coupling IC 1 is connected with power supply decoupling capacitance C1.
As shown in Figures 1 to 4, the output end of the threshold potential device POT2 and the output with triode Q2 base stage it
Between be in series with base stage current-limiting resistance R9.
As shown in Figures 1 to 4, the output is connected with operating resistance R5 and operating resistance with triode Q2 colelctor electrode
R11, another termination power of the operating resistance R5, the other end ground connection of the operating resistance R11, the output triode
Operating resistance R10, the operating resistance R10 other end ground connection are connected between Q2 base stage, base stage current-limiting resistance R9.
As shown in Figures 1 to 4, the output be connected with triode Q2 colelctor electrode filter out noise signal electric capacity C6 and
Electric capacity C7, the other end of the electric capacity C6 and electric capacity C7 are grounded respectively, the output with triode Q2 colelctor electrode with it is described defeated
Outgoing interface socket J2 pin 2 connects.
As shown in Figures 1 to 4, the pin 1 of the output interface socket J2 meets power supply, the output interface socket J2
Pin 2, be connected with power filtering capacitor C2 between power supply.
A kind of band provided by the utility model isolates jamproof relatively output circuit, and J1 is sensor interface, PIN2 pin
It is signal input, is amplified signal by first stage amplifier, Regulate signal amplification regulation resistance R7 and amplifier Q1, thus it is possible to vary
The size of input signal.R2 is sensor current-limiting resistance, and size is determined according to the operating current of sensor.Electric capacity C3, C4 are filters
Except noise signal, high-frequency interferencing signal is removed, leaves useful low frequency signal.C1 and C9 is power supply decoupling capacitance in circuit.R4
It is the 7 pin output biasing resistor of linear optical coupling IC 1.R9 is output triode Q2 base stage current-limiting resistance, and R8 is
Threshold potential device.R5, R10 and R11 are output triode Q2 operating resistances.Electric capacity C6, C7 are to filter out noise signal, are removed
High-frequency interferencing signal.C2 and C8 is power filtering capacitor.IC1 be linear optical isolation from coupling integration circuit, when input is analog quantity
During signal, output and corresponding analog signalses, the power supply on both sides are different, it is impossible to altogether, can just play effective isolation
Function of noise.
As shown in Fig. 2 the electric current for flowing through IF1 and IF2 is no more than 20ma, representative value 10ma, maximum operation frequency does not surpass
1MHZ is crossed, the isolation voltage of linear optical coupling IC 1 is no more than 5000VDC@1Min.Vcc voltage is no more than 30VDC, work
Make electric current and be no more than 15ma, representative value 5VDC.
As shown in Figures 1 to 4, R8 is the knob for adjusting threshold value.Q2 is comparator, more than threshold value signal from output interface
Socket J2 the 2nd pin output, analog quantity then export from output interface socket J2 the 3rd pin.J3 is the attaching plug of sensor, allusion quotation
Offset is DC5V, and D1 is probe power indicator lamp, and D2 is upper power supply indicator.
A kind of functional principal of jamproof relatively output circuit of band isolation provided by the utility model is as follows：
Sensor signal source inputs from sensor interface J1 the 2nd pin, after amplifier Q1 amplifications, is integrated from linear optical coupling
1 pin of IC circuit 1 enters, and 2 pin go out.If the supply voltage of sensor is more than or less than DC5V, resistance R3 resistance values should follow
Below equation：R3=V/20, unit are：KΩ.Resistance tolerance value +/- 10%.
The linear same-phase of optocoupler IC 1 of analog signal of exaggerated sensor is coupled to the output of 7 pin, all the way
Output interface socket J2 the 3rd pin analog output is gone to, the analog quantity size depends on the voltage levels of host computer.Another way
The output triode Q2 of potentiometer threshold value regulation is gone to, output changes into digital quantity to output interface socket J2 with triode through Q2
The 2nd pin output.Corresponding output waveform such as Fig. 3.
A kind of band provided by the utility model isolates jamproof relatively output circuit, can receive 5mv-5v signals（Frequently
Rate is up to 1MHZ）, after isolating jamproof relatively processing by the circuit, analog quantity voltage value is directly exported, can also be set
Compare threshold value, more than threshold value output 1, less than threshold value output 0, for host computer acquisition process；The circuit precision and response
Time：Input signal is exported up to analog quantity, digital quantity 0 or 24V between 0-24V up between 5mv-5V.The processing of circuit
Time<1us or shorter；The circuit is installed on close to output end, well can be filtered the noise signal in signal source, simultaneously
Amplified signal source, by linear optical coupling isolation, suppression common mode is disturbed, after comparison circuit, getable stable voltage.It is defeated
It can be analog quantity or digital quantity to go out end.
A kind of band provided by the utility model isolates jamproof relatively output circuit, can filter out high frequency noise signal and
Various interference, useful low frequency signal is left, after being handled by circuit board, the purer stabilization of signal, when computer repeats to read
Data stabilization.The circuit uses not the dual power supply on ground and the zoom comparison circuit with isolation features altogether, can isolate different voltages etc.
The electric signal of level.
A kind of band provided by the utility model isolates jamproof relatively output circuit, can apply to research and develop laboratory,
In the batch detection instrument and equipment of production line finished product or semi-finished product, or in process detection means.
Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to
Assert that specific implementation of the present utility model is confined to these explanations.For the ordinary skill of the utility model art
For personnel, without departing from the concept of the premise utility, some simple deduction or replace can also be made, should all be regarded
To belong to the scope of protection of the utility model.
Claims (10)
1. a kind of band isolates jamproof relatively output circuit, it is characterised in that：Including sensor interface J1, first stage amplifier,
Triode Q2, output interface socket J2 are used in linear optical coupling IC 1, threshold potential device POT2, output, wherein, the biography
Sensor interface J1 output end is connected with the input of the first stage amplifier, the output end of the first stage amplifier and the line
Property optocoupler IC 1 input connection, the output end of the linear optical coupling IC 1 respectively with threshold value electricity
Position device POT2 input, output interface socket J2 pin 3 connects, the output end of the threshold potential device POT2 with it is described defeated
Go out and connected with triode Q2 base stage, output the triode Q2 colelctor electrode and the pin 2 of the output interface socket J2
Connection, the grounded emitter of the output triode Q2.
2. the jamproof relatively output circuit of band isolation according to claim 1, it is characterised in that：The first stage amplifier
Output end and the Regulate signal for amplifying regulation resistance R7 and amplifier Q1, the sensor interface J1 including Regulate signal are put
Big regulation resistance R7 one end connection, the base stage of the other end and the amplifier Q1 of the Regulate signal amplification regulation resistance R7
Connection, the grounded emitter of the amplifier Q1, the colelctor electrode of the amplifier Q1 and the linear optical coupling IC 1
Pin 2 connects.
3. the jamproof relatively output circuit of band isolation according to claim 2, it is characterised in that：The amplifier Q1's
Collector and emitter is connected with the electric capacity C3 for filtering out noise signal and electric capacity C4, and the electric capacity C3 and electric capacity C4 are in parallel.
4. the jamproof relatively output circuit of band isolation according to claim 3, it is characterised in that：The sensor interface
J1 pin 2 is connected with Regulate signal amplification regulation resistance R7 one end, and the pin 1 of the sensor interface J1 is connected with
Sensor current-limiting resistance R2, another termination power of the sensor current-limiting resistance R2, the pin 3 of the sensor interface J1 connect
Ground, pin 2 of the input signal of sensor through the sensor interface J1 input, by Regulate signal amplify regulation resistance R7 and
Amplifier Q1 amplifies the input signal of sensor, and noise signal is filtered out by the electric capacity C3 and electric capacity C4, removes high frequency and does
Signal is disturbed, leaves low frequency signal.
5. the jamproof relatively output circuit of band isolation according to claim 2, it is characterised in that：The linear optical coupling collection
Pin 7 into IC circuit 1 is connected with the threshold potential device POT2, and the pin 7 of the linear optical coupling IC 1 is connected with
Export biasing resistor R4.
6. the jamproof relatively output circuit of band isolation according to claim 2, it is characterised in that：The linear optical coupling collection
Pin 8 into IC circuit 1 is connected with power supply decoupling capacitance C1.
7. the jamproof relatively output circuit of band isolation according to claim 1, it is characterised in that：The threshold potential device
POT2 output end and the output are with being in series with base stage current-limiting resistance R9 between triode Q2 base stage.
8. the jamproof relatively output circuit of band isolation according to claim 7, it is characterised in that：Three poles of the output
Pipe Q2 colelctor electrode is connected with operating resistance R5 and operating resistance R11, another termination power of the operating resistance R5, the work
Make resistance R11 other end ground connection, the output is with being connected with work electricity between triode Q2 base stage, base stage current-limiting resistance R9
Hinder R10, the other end ground connection of the operating resistance R10.
9. the jamproof relatively output circuit of band isolation according to claim 1, it is characterised in that：Three poles of the output
Pipe Q2 colelctor electrode is connected with the electric capacity C6 for filtering out noise signal and electric capacity C7, the electric capacity C6 and electric capacity C7 other end difference
Ground connection.
10. the jamproof relatively output circuit of band isolation according to claim 1, it is characterised in that：The output interface
Socket J2 pin 1 connects power supply, and power filtering capacitor C2 is connected between the pin 2 of the output interface socket J2, power supply.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721170914.8U CN207113894U (en) | 2017-09-13 | 2017-09-13 | A kind of band isolates jamproof relatively output circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721170914.8U CN207113894U (en) | 2017-09-13 | 2017-09-13 | A kind of band isolates jamproof relatively output circuit |
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| CN207113894U true CN207113894U (en) | 2018-03-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525527A (en) * | 2017-09-13 | 2017-12-29 | 深圳市海弘装备技术有限公司 | A kind of band isolates jamproof relatively output circuit |
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2017
- 2017-09-13 CN CN201721170914.8U patent/CN207113894U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525527A (en) * | 2017-09-13 | 2017-12-29 | 深圳市海弘装备技术有限公司 | A kind of band isolates jamproof relatively output circuit |
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