CN107064537A - Engine speed indicator signal processing apparatus - Google Patents
Engine speed indicator signal processing apparatus Download PDFInfo
- Publication number
- CN107064537A CN107064537A CN201710143973.4A CN201710143973A CN107064537A CN 107064537 A CN107064537 A CN 107064537A CN 201710143973 A CN201710143973 A CN 201710143973A CN 107064537 A CN107064537 A CN 107064537A
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- Prior art keywords
- pin
- resistance
- operational amplifier
- high speed
- input
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
Abstract
The present invention relates to a kind of engine pack, specifically engine speed indicator signal processing apparatus.It includes operational amplifier, high speed photo coupling and phase inverter.It is single supply operational amplifier to be characterized in the operational amplifier, and it has positive pole input pin, negative pole input pin, the first grounding leg, power input pin and output pin, the high speed photo coupling has the first empty pin, the second empty pin, input anode pin, input cathode pin, output end power pin, enable pin, open-drain output pin and the second grounding leg.The processing unit can ensure that the result of generator CPU is accurate, and manufacturing cost is relatively low.
Description
Technical field
The present invention relates to a kind of engine pack, specifically engine speed indicator signal processing apparatus.
Background technology
It is well known that engine speed indicator can be all configured in the equipment such as automobile, motorcycle is used to refer to engine speed model
Enclose, and react whether engine normally runs with this.It can all be set in engine speed indicator for handling engine speed sensing
The tach signal of device detection, and the signal after processing is passed to the device of engine central processing unit.
At present, the revolution counter in engine includes dual power supply operational amplifier and high speed photo coupling with signal processing apparatus.For
Ensure the precision of the signal output of dual power supply operational amplifier, dual power supply operational amplifier operationally needs to connect current potential
Device, potentiometer is used to carry out zeroing processing to dual power supply amplifier, i.e., in the case where being inputted without external signal, transport dual power supply
It is zero to calculate amplifier out voltage.However, potentiometer is in different environments（Temperature, humidity are different）Occur that resistance is inclined
Difference so that zeroing is inaccurate, so as to influence the processing of signal, causes the signal after processing to fluctuate, and then influence engine
The result of CPU so that result is inaccurate.Moreover, dual power supply operational amplifier needs two power supply moulds
Block, power module is more, and manufacturing cost is high.
The content of the invention
The present invention is to solve a kind of engine speed indicator signal processing apparatus, the processing unit can ensure generator
The result of CPU is accurate, and manufacturing cost is relatively low.
To solve the above problems, providing following technical scheme：
The engine speed indicator of the present invention includes operational amplifier and high speed photo coupling with signal processing apparatus.It is characterized in the fortune
Calculation amplifier is single supply operational amplifier, and it has positive pole input pin, negative pole input pin, the first grounding leg, power input pin
And output pin, the high speed photo coupling has the first empty pin, the second empty pin, input anode pin, input cathode pin, output end power
Pin, enable pin, open-drain output pin and the second grounding leg.The negative pole input pin of the operational amplifier is sequentially connected in series by wire
It is used to be connected with the speed probe of engine after one resistance, second resistance and the first transformer, the positive pole of operational amplifier is defeated
Enter pin and ground connection after 3rd resistor, the 4th resistance and the second transformer is sequentially connected in series by wire, from second resistance to first resistor
Between that section lead and be parallel with the first electric capacity and two grades one after another from the second transformer between that section lead the 4th resistance
Pipe, the first grounding leg ground connection of operational amplifier, the power input pin of operational amplifier is connected with the first power supply, operational amplifier
Power input pin by the second capacity earth, the output pin of operational amplifier is connected by the 5th resistance with second source, fortune
The 6th resistance and the 7th resistance, the output pin of operational amplifier are sequentially connected in series between the output pin and input anode pin of calculating amplifier
It is connected by the 8th resistance with the input cathode pin of high speed photo coupling, the input cathode pin of high speed photo coupling is connected with the 3rd electric capacity
After be grounded, the input anode pin of high speed photo coupling is connected by the 9th resistance with the 3rd power supply, the second grounding leg of high speed photo coupling
Ground connection, the output end power pin of high speed photo coupling is connected with the 4th power supply, and the enable pin of high speed photo coupling passes through the tenth resistance and the 4th
Power supply is connected, and the open-drain output pin of high speed photo coupling is connected by the 11st resistance with the 4th power supply, and the 4th power supply passes through the 4th electricity
Hold ground connection, the open-drain output pin of high speed photo coupling is sequentially connected in series the 12nd resistance, the first phase inverter and the second phase inverter by wire
It is used to be connected with the CPU of engine afterwards, that section lead between the first phase inverter and the 12nd resistance passes through the 5th electricity
Hold ground connection.
Wherein, first phase inverter and the second phase inverter are schmitt inverter.
5th resistance is 1000 ohm of resistance, and the capacity of second electric capacity is 0.1uf.
Above scheme is taken, with advantages below：
Because the engine speed indicator of the present invention with the operational amplifier of signal processing apparatus is single supply operational amplifier, and its
Have positive pole input pin, negative pole input pin, the first grounding leg, power input pin and an output pin, the high speed photo coupling have the first empty pin,
Second empty pin, input anode pin, input cathode pin, output end power pin, enable pin, open-drain output pin and the second ground connection
Pin.Zeroing processing is carried out without a position device using single supply operational amplifier, occurred so as to avoid because of environmental factor
Zeroing it is inaccurate so that tach signal is stable after processing, and its processing knot can be ensured by passing to after engine central processing unit
Fruit is completely correct.Moreover, the power module that single supply operational amplifier needs is less, manufacturing cost is relatively low.
Brief description of the drawings
Fig. 1 is the structure principle chart of the engine speed indicator signal processing apparatus of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
As shown in figure 1, the engine speed indicator of the present invention includes operational amplifier 9 and high speed photo coupling with signal processing apparatus
23.The operational amplifier 9 is single supply operational amplifier, and it has positive pole input pin E, negative pole input pin A, the first grounding leg
D, power input pin B and output pin C, the high speed photo coupling 23 have the first empty pin N1, the second empty pin N2, input anode pin V1,
Input cathode pin V2, output end power pin VCC, enable pin VE, open-drain output pin Vo and the second grounding leg N2.The computing is put
The negative pole input pin A of big device 9 is sequentially connected in series after first resistor 7, the transformer 1 of second resistance 3 and first by wire to be used for and hair
The speed probe of motivation is connected, and the positive pole input pin E of operational amplifier 9 is sequentially connected in series the electricity of 3rd resistor the 8, the 4th by wire
Resistance 6 and second is grounded after transformer 2, from second resistance 3 to that section lead first resistor 7 with from the second transformer 2 to the
The first electric capacity 4 and diode 5 are parallel between that section lead between four resistance 6 one after another, the first grounding leg D of operational amplifier 9 connects
Ground, the power input pin B of operational amplifier 9 is connected with the first power supply 24, and the power input pin B of operational amplifier 9 passes through second
Electric capacity 10 is grounded, and the output pin C of operational amplifier 9 is connected by the 5th resistance 11 with second source 25, operational amplifier 9 it is defeated
Go out and the 6th resistance 12 and the 7th resistance 13 are sequentially connected in series between pin C and input anode pin V1, the output pin C of operational amplifier 9 leads to
Cross the 8th resistance 18 with the input cathode pin V2 of high speed photo coupling 23 to be connected, the input cathode pin V2 of high speed photo coupling 23 and the 3rd
Electric capacity 19 is grounded after being connected, and the input anode pin V1 of high speed photo coupling 23 is connected by the 9th resistance 17 with the 3rd power supply 27, high
The second grounding leg N2 ground connection of fast optocoupler 23, the output end power pin VCC of high speed photo coupling 23 is connected with the 4th power supply 26, high-speed light
The enable pin VE of coupling 23 is connected by the tenth resistance 16 with the 4th power supply 26, and the open-drain output pin Vo of high speed photo coupling 23 passes through the tenth
One resistance 15 is connected with the 4th power supply 26, and the 4th power supply 26 is grounded by the 4th electric capacity 14, the open-drain output pin of high speed photo coupling 23
Vo is sequentially connected in series after the 12nd resistance 20, the first phase inverter 21 and the second phase inverter 22 by wire is used for the center with engine
Processing unit is connected, and that section lead between the first phase inverter 21 and the 12nd resistance 20 is grounded by the 5th electric capacity 23.
The phase inverter 22 of first phase inverter 21 and second is schmitt inverter.
5th resistance 11 is 1000 ohm of resistance, and the capacity of second electric capacity 10 is 0.1uf.
Become in use, the negative pole input pin A of operational amplifier 9 is sequentially connected in series into first resistor 7, second resistance 3 and first
It is connected after depressor 1 with the speed probe of engine, the open-drain output pin Vo of high speed photo coupling 23 is led to and is sequentially connected in series the 12nd electricity
It is connected after the 20, first phase inverter 21 of resistance and the second phase inverter 22 with the CPU of engine.The rotating speed of engine is entered
During row measurement, first, the speed probe of engine senses to the rotating speed of engine, and the tach signal sensed is passed through
Operational amplifier 9 is passed to after crossing the filtering of the first electric capacity 4 and diode voltage stabilizing.Then, operational amplifier 9 is carried out to tach signal
Processing, and pass to high speed photo coupling 23.Then, high speed photo coupling 23 is isolated to tach signal, so as to reduce external signal pair
The influence of tach signal.Afterwards, the tach signal after processing is reduced and switched at a high speed by high speed photo coupling 23 by schmitt inverter
When vibration after, pass to CPU.Finally, by the calculating and adjustment of CPU, final measurement is set out
The rotating speed of motivation.
Claims (3)
1. engine speed indicator signal processing apparatus, including operational amplifier（9）And high speed photo coupling（23）；It is characterized in that institute
State operational amplifier（9）For single supply operational amplifier, and it has positive pole input pin（E）, negative pole input pin（A）, first ground connection
Pin（D）, power input pin（B）And output pin（C）, the high speed photo coupling（23）There is the first empty pin（N1）, the second empty pin（N2）, it is defeated
Enter proper pole pin（V1）, input cathode pin（V2）, output end power pin（VCC）, enable pin（VE）, open-drain output pin（Vo）With
Second grounding leg（N2）；The operational amplifier（9）Negative pole input pin（A）First resistor is sequentially connected in series by wire（7）,
Two resistance（3）With the first transformer（1）It is used to be connected with the speed probe of engine afterwards, operational amplifier（9）Positive pole it is defeated
Enter pin（E）3rd resistor is sequentially connected in series by wire（8）, the 4th resistance（6）With the second transformer（2）After be grounded, from second electricity
Resistance（3）To first resistor（7）Between that section lead with from the second transformer（2）To the 4th resistance（6）Between that section lead between first,
After be parallel with the first electric capacity（4）And diode（5）, operational amplifier（9）The first grounding leg（D）Ground connection, operational amplifier（9）
Power input pin（B）With the first power supply（24）It is connected, operational amplifier（9）Power input pin（B）Pass through the second electric capacity
（10）Ground connection, operational amplifier（9）Output pin（C）Pass through the 5th resistance（11）With second source（25）It is connected, operation amplifier
Device（9）Output pin（C）With input anode pin（V1）Between be sequentially connected in series the 6th resistance（12）With the 7th resistance（13）, computing puts
Big device（9）Output pin（C）Pass through the 8th resistance（18）With high speed photo coupling（23）Input cathode pin（V2）It is connected, high-speed light
Coupling（23）Input cathode pin（V2）With the 3rd electric capacity（19）It is grounded after being connected, high speed photo coupling（23）Input anode pin
（V1）Pass through the 9th resistance（17）With the 3rd power supply（27）It is connected, high speed photo coupling（23）The second grounding leg（N2）Ground connection, at a high speed
Optocoupler（23）Output end power pin（VCC）With the 4th power supply（26）It is connected, high speed photo coupling（23）Enable pin（VE）Pass through
Ten resistance（16）With the 4th power supply（26）It is connected, high speed photo coupling（23）Open-drain output pin（Vo）Pass through the 11st resistance（15）With
4th power supply（26）It is connected, the 4th power supply（26）Pass through the 4th electric capacity（14）Ground connection, high speed photo coupling（23）Open-drain output pin
（Vo）12nd resistance is sequentially connected in series by wire（20）, the first phase inverter（21）With the second phase inverter（22）It is used for afterwards with starting
The CPU of machine is connected, the first phase inverter（21）With the 12nd resistance（20）Between that section lead pass through the 5th electric capacity
（23）Ground connection.
2. engine speed indicator signal processing apparatus as claimed in claim 1, it is characterised in that first phase inverter
（21）With the second phase inverter（22）It is schmitt inverter.
3. engine speed indicator signal processing apparatus as claimed in claim 1 or 2, it is characterised in that the 5th resistance
（11）For 1000 ohm of resistance, second electric capacity（10）Capacity be 0.1uf.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710143973.4A CN107064537B (en) | 2017-03-13 | 2017-03-13 | Engine speed indicator signal processing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710143973.4A CN107064537B (en) | 2017-03-13 | 2017-03-13 | Engine speed indicator signal processing apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107064537A true CN107064537A (en) | 2017-08-18 |
| CN107064537B CN107064537B (en) | 2019-11-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710143973.4A Active CN107064537B (en) | 2017-03-13 | 2017-03-13 | Engine speed indicator signal processing apparatus |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1151792A (en) * | 1997-07-31 | 1999-02-26 | Matsushita Electric Works Ltd | Sensor signal circuit |
| CN1557664A (en) * | 2004-01-16 | 2004-12-29 | 湖南科技大学 | Bus type intelligent sensor set for state monitoring |
| CN101177848A (en) * | 2007-10-19 | 2008-05-14 | 西安交通大学 | Direct-driving single needle industrial sewing machine control system |
| CN101214795A (en) * | 2008-01-07 | 2008-07-09 | 清华大学 | Electronic air control shutter automatically controlling device |
| US20080181171A1 (en) * | 2007-01-25 | 2008-07-31 | Adc Telecommunications, Inc. | Distributed remote base station system |
| CN102069686A (en) * | 2010-12-14 | 2011-05-25 | 吉林大学 | Automobile tire monitoring device based on organic piezoelectric material |
| CN102263536A (en) * | 2011-07-25 | 2011-11-30 | 李军科 | Stepping motor subdivided driving device for current vector constant amplitude control |
| CN202553925U (en) * | 2012-05-07 | 2012-11-28 | 上海理工大学 | Simple wireless electrocardiogram detecting apparatus |
| CN103326739A (en) * | 2013-05-22 | 2013-09-25 | 南京英埃格传感网络科技有限公司 | Aquaculture wireless sensor network node device and operation method |
| CN206818738U (en) * | 2017-03-13 | 2017-12-29 | 无锡天任电子有限公司 | Engine speed indicator signal processing apparatus |
-
2017
- 2017-03-13 CN CN201710143973.4A patent/CN107064537B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1151792A (en) * | 1997-07-31 | 1999-02-26 | Matsushita Electric Works Ltd | Sensor signal circuit |
| CN1557664A (en) * | 2004-01-16 | 2004-12-29 | 湖南科技大学 | Bus type intelligent sensor set for state monitoring |
| US20080181171A1 (en) * | 2007-01-25 | 2008-07-31 | Adc Telecommunications, Inc. | Distributed remote base station system |
| CN101177848A (en) * | 2007-10-19 | 2008-05-14 | 西安交通大学 | Direct-driving single needle industrial sewing machine control system |
| CN101214795A (en) * | 2008-01-07 | 2008-07-09 | 清华大学 | Electronic air control shutter automatically controlling device |
| CN102069686A (en) * | 2010-12-14 | 2011-05-25 | 吉林大学 | Automobile tire monitoring device based on organic piezoelectric material |
| CN102263536A (en) * | 2011-07-25 | 2011-11-30 | 李军科 | Stepping motor subdivided driving device for current vector constant amplitude control |
| CN202553925U (en) * | 2012-05-07 | 2012-11-28 | 上海理工大学 | Simple wireless electrocardiogram detecting apparatus |
| CN103326739A (en) * | 2013-05-22 | 2013-09-25 | 南京英埃格传感网络科技有限公司 | Aquaculture wireless sensor network node device and operation method |
| CN206818738U (en) * | 2017-03-13 | 2017-12-29 | 无锡天任电子有限公司 | Engine speed indicator signal processing apparatus |
Non-Patent Citations (1)
| Title |
|---|
| 张帅: "基于蓄电池脉动电压测量的汽车转速检测方法", 《电子科技》 * |
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