CN206594487U - Terminal-guided shell automatic pilot fault simulation circuit - Google Patents
Terminal-guided shell automatic pilot fault simulation circuit Download PDFInfo
- Publication number
- CN206594487U CN206594487U CN201720145204.3U CN201720145204U CN206594487U CN 206594487 U CN206594487 U CN 206594487U CN 201720145204 U CN201720145204 U CN 201720145204U CN 206594487 U CN206594487 U CN 206594487U
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- circuit
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- terminal
- resistance
- automatic pilot
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Abstract
The utility model 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 utility model 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 utility model belongs to electronic technology field, and in particular to a kind of terminal-guided shell automatic pilot fault simulation electricity
Road.
Background technology
When being detected with analog circuit come analog optical signal, the rudder piece that automatic pilot electronic unit is exported to drive device
There is signal period abnormal situation in defection signal, and the comparison diagram of abnormal conditions and normal condition is as shown in Figure 3.
Utility model content
The utility model technical issues that need to address are to provide a kind of accurate terminal-guided shell automatic pilot of signal
Fault simulation circuit.
In order to solve the above technical problems, the technical scheme that the utility model is used is：
A kind of terminal-guided shell automatic pilot fault simulation circuit, the analog circuit includes single chip circuit and anti-phase put
Big circuit, the wherein output end of single chip circuit connect the input of see-saw circuit, and single chip circuit is produced according to program
Different square-wave signals, output to see-saw circuit carries out amplitude amplification.
Further, the single chip circuit include single-chip microcomputer U1 and its periphery electric source filter circuit, reset circuit, when
Clock circuit.
Further, in addition to controlling switch, the input connection normal signal and 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
Switching normal signal is communicated to single-chip microcomputer to see-saw circuit, and by power supply, to be powered 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, inverting input of the input signal through resistance R6 connection amplifiers U2, resistance R4 is attempted by the anti-phase of amplifier U2
Between input and output end, amplifier U2 in-phase input end connects resistance R5 and resistance R7 connecting node.
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 utility model is obtained is：
The utility model produces square-wave signal by single-chip microcomputer, and signal accuracy is high, and output is believed using see-saw circuit
Number it is amplified anti-phase, signal is met requirement.
Brief description of the drawings
Fig. 1 is the utility model analog circuit block diagram；
Fig. 2 is the utility model see-saw circuit schematic diagram；
Fig. 3 is the utility model normal signal and fault-signal comparison diagram；
Fig. 4 is the utility model main program flow chart；
Fig. 5 is the utility model subroutine flow chart.
Embodiment
The utility model is described in further details with reference to embodiment：
As shown in figure 1, the utility model includes controlling switch, single chip circuit and see-saw circuit, wherein single-chip microcomputer
The output end of circuit connects the input of see-saw circuit, and single chip circuit produces different square-wave signals according to program, defeated
Go out to see-saw circuit and carry out amplitude amplification.Electric source filter circuit of the single chip circuit including single-chip microcomputer and its periphery,
Reset circuit, clock circuit.The input connection normal signal and power supply of the controlling switch, output end connection single-chip microcomputer and inspection
Examining system, when controlling switch is cut off, switching normal signal is to detecting system input, and when connecting, switching normal signal is to anti-
Phase amplifying circuit, and power supply is communicated to single-chip microcomputer, to be powered 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, inverting input of the input signal through resistance R6 connection amplifiers U2, resistance R4 is attempted by the anti-phase of amplifier U2
Between input and output end, amplifier U2 in-phase input end connects resistance R5 and resistance R7 connecting node.The single-chip microcomputer
U1 uses PIC16F873A, amplifier U2 to use LM741.
Utility model works principle：
Because the signal amplitude that single-chip microcomputer is exported is smaller, maximum is no more than 5V, and actual signal can reach 12V, add point
Peak value can exceed 12V.In order that simulating the fault-signal come has the essential characteristic of actual signal, in simulated failure feature
On the basis of, it is necessary to see-saw circuit will from single-chip microcomputer signal inversion amplification after be output to detecting system.
After single-chip microcomputer power-up work, single-chip microcomputer starts to detect the level change on RA1 pin, when the pin level is high electricity
Usually, single-chip microcomputer RC3 pin output low level, inverted amplifying circuit is transformed into 12V high level.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 and amplify by integrated operational amplifier LM741
After be output to detecting system and show the fault simulation signal that is out of order.
Programming：
Below by the design to the scm software program in the circuit.Scm software design is built upon whole monolithic
On the basis of machine control circuit hardware, to realize that specific control function writes specific running software instruction, including according to list
Piece machine 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：It is electromechanical that the analog circuit includes monolithic
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 single-chip microcomputer U1 and its electric source filter circuit, reset circuit, the clock circuit of periphery.
3. terminal-guided shell automatic pilot fault simulation circuit according to claim 2, it is characterised in that：Also include control
System switch, the input connection normal signal and 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, to be powered 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, is connected to both ends of power after resistance R5 and resistance R7 series connection, input signal is through electricity
R6 connection amplifiers U2 inverting input is hindered, resistance R4 is attempted by between amplifier U2 inverting input 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 |
|---|---|---|---|
| CN201720145204.3U CN206594487U (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 |
|---|---|---|---|
| CN201720145204.3U CN206594487U (en) | 2017-02-17 | 2017-02-17 | Terminal-guided shell automatic pilot fault simulation circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206594487U true CN206594487U (en) | 2017-10-27 |
Family
ID=60128476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720145204.3U Active CN206594487U (en) | 2017-02-17 | 2017-02-17 | Terminal-guided shell automatic pilot fault simulation circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206594487U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106843050A (en) * | 2017-02-17 | 2017-06-13 | 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 CN201720145204.3U patent/CN206594487U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106843050A (en) * | 2017-02-17 | 2017-06-13 | 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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