CN106843050A - Terminal-guided shell automatic pilot fault simulation circuit - Google Patents
Terminal-guided shell automatic pilot fault simulation circuit Download PDFInfo
- Publication number
- CN106843050A CN106843050A CN201710086734.XA CN201710086734A CN106843050A CN 106843050 A CN106843050 A CN 106843050A CN 201710086734 A CN201710086734 A CN 201710086734A CN 106843050 A CN106843050 A CN 106843050A
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- China
- Prior art keywords
- circuit
- resistance
- see
- terminal
- automatic pilot
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- Pending
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- 238000004088 simulation Methods 0.000 title claims abstract description 11
- 230000003321 amplification Effects 0.000 claims abstract description 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 5
- 230000005611 electricity Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Amplifiers (AREA)
Abstract
The invention discloses a kind of terminal-guided shell automatic pilot fault simulation circuit, the analog circuit includes single chip circuit and see-saw circuit, wherein the output end of single chip circuit connects the input of see-saw circuit, single chip circuit produces different square-wave signals according to program, and output to see-saw circuit carries out amplitude amplification.The present invention produces square-wave signal by single-chip microcomputer, and signal accuracy is high, output signal is amplified using see-saw circuit anti-phase, signal is met requirement.
Description
Technical field
The invention belongs to electronic technology field, and in particular to a kind of terminal-guided shell automatic pilot fault simulation circuit.
Background technology
When being detected come analog optical signal with analog circuit, the rudder piece that automatic pilot electronic unit is exported to drive device
There is signal period abnormal situation in defection signal, and abnormal conditions are as shown in Figure 3 with the comparison diagram of normal condition.
The content of the invention
The technical problem to be solved in the invention is to provide a kind of accurate terminal-guided shell automatic pilot failure of signal
Analog circuit.
In order to solve the above technical problems, the technical solution adopted in the present invention is：
A kind of terminal-guided shell automatic pilot fault simulation circuit, the analog circuit includes single chip circuit and anti-phase amplification electricity
The output end on road, wherein single chip circuit connects the input of see-saw circuit, and single chip circuit produces different according to program
Square-wave signal, output carries out amplitude amplification to see-saw circuit.
Further, the single chip circuit include the electric source filter circuit of single-chip microcomputer U1 and its periphery, reset circuit, when
Clock circuit.
Further, also including controlling switch, input connection normal signal and the power supply of the controlling switch, output
End connection single-chip microcomputer and detecting system, when controlling switch is cut off, switching normal signal to detecting system input, when connecting
Power supply is communicated to single-chip microcomputer by switching normal signal to see-saw circuit, is powered with to analog circuit.
Further, the see-saw circuit includes amplifier U2, resistance R4-R7, connects after resistance R5 and resistance R7 series connection
Both ends of power is connected to, input signal connects the inverting input of amplifier U2 through resistance R6, and resistance R4 is attempted by the anti-phase of amplifier U2
Between input and output end, the in-phase input end of amplifier U2 connects the connecting node of resistance R5 and resistance R7.
Further, the single-chip microcomputer U1 uses PIC16F873A, amplifier U2 to use LM741.
By adopting the above-described technical solution, the technological progress that the present invention is obtained is：
The present invention produces square-wave signal by single-chip microcomputer, and signal accuracy is high, and output signal is put using see-saw circuit
It is big anti-phase, meet signal and require.
Brief description of the drawings
Fig. 1 is analog circuit block diagram of the present invention；
Fig. 2 is see-saw circuit schematic diagram of the present invention；
Fig. 3 is normal signal of the present invention and fault-signal comparison diagram；
Fig. 4 is main program flow chart of the present invention；
Fig. 5 is subroutine flow chart of the present invention.
Specific embodiment
The present invention is described in further details with reference to embodiment：
As shown in figure 1, the present invention includes controlling switch, single chip circuit and see-saw circuit, wherein single chip circuit is defeated
Go out the input of end connection see-saw circuit, single chip circuit produces different square-wave signals according to program, output is to anti-phase
Amplifying circuit carries out amplitude amplification.The single chip circuit include the electric source filter circuit of single-chip microcomputer and its periphery, reset circuit,
Clock circuit.Input connection normal signal and the power supply of the controlling switch, output end connection single-chip microcomputer and detecting system, when
When controlling switch is cut off, switching normal signal to detecting system input, when connecting, switching normal signal amplifies electricity to anti-phase
Road, and power supply is communicated to single-chip microcomputer, powered with to analog circuit.
As shown in Fig. 2 the see-saw circuit includes amplifier U2, resistance R4-R7, connect after resistance R5 and resistance R7 series connection
Both ends of power is connected to, input signal connects the inverting input of amplifier U2 through resistance R6, and resistance R4 is attempted by the anti-phase of amplifier U2
Between input and output end, the in-phase input end of amplifier U2 connects the connecting node of resistance R5 and resistance R7.The single-chip microcomputer
U1 uses PIC16F873A, amplifier U2 to use LM741.
Operation principle of the present invention：
Because the signal amplitude of single-chip microcomputer output is smaller, maximum is no more than 5V, and actual signal can reach 12V, add kurtosis
12V can be exceeded.In order that simulating the fault-signal for coming has the essential characteristic of actual signal, in the base of simulated failure feature
, it is necessary to be exported to detecting system after see-saw circuit amplifies the signal inversion from single-chip microcomputer on plinth.
After single-chip microcomputer power-up work, single-chip microcomputer starts to detect the level change on RA1 pin, when the pin level is electricity high
Usually, single-chip microcomputer RC3 pin output low level, inverted amplifying circuit is transformed into the high level of 12V.When RA1 level is changed into low electricity
RC3 pins start to export periodic square wave after flat, and the square-wave signal of output is anti-phase by integrated operational amplifier LM741 and amplifies
Output afterwards shows the fault simulation signal that is out of order to detecting system.
Programming：
Below by the design to the scm software program in the circuit.Scm software design is built upon whole single-chip microcomputer control
On the basis of circuit hardware processed, to realize that specific control function writes specific running software instruction, including according to single-chip microcomputer
Operation principle, specific storage address and operator scheme etc. carry out specific software programming.
As shown in Figures 4 and 5, scm software is mainly made up of main program and time delay subroutine, and time delay subroutine prolongs
When the time be 10ms, single-chip microcomputer repeatedly called according to the difference of delay time to time delay subroutine.
Claims (5)
1. a kind of terminal-guided shell automatic pilot fault simulation circuit, it is characterised in that：The analog circuit includes that monolithic is electromechanical
The output end of road and see-saw circuit, wherein single chip circuit connects the input of see-saw circuit, single chip circuit root
Different square-wave signals are produced according to program, output to see-saw circuit carries out amplitude amplification.
2. terminal-guided shell automatic pilot fault simulation circuit according to claim 1, it is characterised in that：The monolithic
Electromechanical road includes electric source filter circuit, reset circuit, the clock circuit of single-chip microcomputer U1 and its periphery.
3. terminal-guided shell automatic pilot fault simulation circuit according to claim 2, it is characterised in that：Also include control
System switch, input connection normal signal and the power supply of the controlling switch, output end connection single-chip microcomputer and detecting system work as control
During switch cutoff processed, switching normal signal to detecting system input switches normal signal when connecting to see-saw circuit,
And power supply is communicated to single-chip microcomputer, powered with to analog circuit.
4. terminal-guided shell automatic pilot fault simulation circuit according to claim 3, it is characterised in that：It is described anti-phase
Amplifying circuit includes amplifier U2, resistance R4-R7, and both ends of power is connected to after resistance R5 and resistance R7 series connection, and input signal is through electricity
The inverting input of resistance R6 connection amplifiers U2, resistance R4 is attempted by between the inverting input of amplifier U2 and output end, amplifier U2
In-phase input end connect resistance R5 and resistance R7 connecting node.
5. terminal-guided shell automatic pilot fault simulation circuit according to claim 3, it is characterised in that：The monolithic
Machine U1 uses PIC16F873A, amplifier U2 to use LM741.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710086734.XA CN106843050A (en) | 2017-02-17 | 2017-02-17 | Terminal-guided shell automatic pilot fault simulation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710086734.XA CN106843050A (en) | 2017-02-17 | 2017-02-17 | Terminal-guided shell automatic pilot fault simulation circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106843050A true CN106843050A (en) | 2017-06-13 |
Family
ID=59129105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710086734.XA Pending CN106843050A (en) | 2017-02-17 | 2017-02-17 | Terminal-guided shell automatic pilot fault simulation circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106843050A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201878105U (en) * | 2010-10-15 | 2011-06-22 | 北京工业大学 | Magnetic impulse type crankshaft position signal generator of electric vehicle |
| CN102662394A (en) * | 2012-05-08 | 2012-09-12 | 清华大学 | Fault simulation device for automobile electric power-assisted steering system |
| CN105094109A (en) * | 2014-05-23 | 2015-11-25 | 上海通用汽车有限公司 | Fault injection device |
| CN106292434A (en) * | 2016-08-19 | 2017-01-04 | 东风汽车公司 | A kind of watchdog circuit for automobile electronic controller |
| CN206594487U (en) * | 2017-02-17 | 2017-10-27 | 中国人民解放军军械工程学院 | Terminal-guided shell automatic pilot fault simulation circuit |
-
2017
- 2017-02-17 CN CN201710086734.XA patent/CN106843050A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201878105U (en) * | 2010-10-15 | 2011-06-22 | 北京工业大学 | Magnetic impulse type crankshaft position signal generator of electric vehicle |
| CN102662394A (en) * | 2012-05-08 | 2012-09-12 | 清华大学 | Fault simulation device for automobile electric power-assisted steering system |
| CN105094109A (en) * | 2014-05-23 | 2015-11-25 | 上海通用汽车有限公司 | Fault injection device |
| CN106292434A (en) * | 2016-08-19 | 2017-01-04 | 东风汽车公司 | A kind of watchdog circuit for automobile electronic controller |
| CN206594487U (en) * | 2017-02-17 | 2017-10-27 | 中国人民解放军军械工程学院 | Terminal-guided shell automatic pilot fault simulation circuit |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170613 |