CN205047346U - Aviation piston engine ignition drive circuit's anti -interference structure - Google Patents
Aviation piston engine ignition drive circuit's anti -interference structure Download PDFInfo
- Publication number
- CN205047346U CN205047346U CN201520817206.3U CN201520817206U CN205047346U CN 205047346 U CN205047346 U CN 205047346U CN 201520817206 U CN201520817206 U CN 201520817206U CN 205047346 U CN205047346 U CN 205047346U
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- comparator
- operational amplifier
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- port
- control end
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- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The utility model provides an aviation piston engine ignition drive circuit's anti -interference structure, includes: signal amplifier, operational amplifier, comparator, singlechip port and hardware shutoff control end, wherein signal amplifier be connected with operational amplifier and the access point fireflood move the port, singlechip port and comparator are connected respectively to operational amplifier's output, the output of comparator is connected with hardware shutoff control end. The ignition drive square wave that the comparator was put after the processing fortune is compared with the comparative voltage square wave, drive square signal normally then keep igniteing drive square signal and export the singlechip port to if ignite, if ignite drive square signal abnormally then comparator output turn -offs the signal, hardware turn -offs control end work to the input of port is moved in the cut -off point fireflood, uses the ignition drive current who guarantees the input all the time as safe current, has avoided non - normal current's influence, thereby has guaranteed ignition coil's normal work.
Description
Technical field
The utility model relates to the technical field of aviation piston type engine, is a kind of anti-interference structure of aviation piston type engine ignition drive circuit specifically.
Background technique
At present, domestic small-sized aviation piston type engine all adopts diaphragm carburetor oil supply system, because Carburetor is by trunnion degree of vacuum and machinery type metering fuel oil, thus can not meet motor climbing, cruise and under the various flight working condition such as underriding, under various environmental conditions to the demand of inflammable mixture optimal air-fuel ratio.And fuel oil electric-controlled injection technology can improve fuel-oil atmozation quality, the fuel tolerance meeting aviation piston type engine requires and need due to aviation piston type engine rigorous service condition to the change of power in flight course, and to the requirement of ignition drive circuit reliability, comparatively other system is higher for it.Spark coil is comparatively large due to its transient current at work, may receive the impact of various different external interference signal, cause circuit working abnormal, can cause the damage of internal components time serious.Especially for aviation piston type engine, there is many factors that may cause thrashing in ignition drive circuit working procedure, as random disturbances, electrostatic, lightning induction, temperature factor etc.Greatly, this proposes requirements at the higher level to spark coil service behaviour to the change of aviation piston type engine operating ambient temperature, and therefore ignition drive circuit carries out reliability analysis and designs necessary; Secondly, aviation piston type engine has large driven current density, heavy-duty motor and various control system, the basis of original circuitry adds a lot of guide line, motivational drive line etc., makes the complexity of whole circuit, danger, electromagnetic interference etc. rise to higher level.Therefore, meet aviation piston type engine functional requirement, improve circuit anti-interference, simplify wire harness, ensure that circuitry safe and reliable operation becomes the primary and foremost purpose of reliability design.
Model utility content
It is a kind of anti-interference structure of aviation piston type engine ignition drive circuit specifically that the technical problems to be solved in the utility model is to provide.
The technological scheme that the utility model is taked for the technical problem existed in solution known technology is:
The anti-interference structure of aviation piston type engine ignition drive circuit of the present utility model, comprise: signal amplifier, operational amplifier, comparator, one-chip machine port and hardware turn off control end, wherein signal amplifier is connected with operational amplifier and access point fireflood moved end mouth, the output terminal of operational amplifier connects one-chip machine port and comparator respectively, the input end of comparator accesses the output voltage of comparative voltage and operational amplifier simultaneously, and output terminal and the hardware of comparator turn off control end and is connected.
The advantage that the utility model has and good effect are:
In the anti-interference structure of aviation piston type engine ignition drive circuit of the present utility model, spark coil On current is input in signal amplifier because of its weak output signal, operational amplifier is outputted to after signal amplifier amplifies signal, the output terminal of operational amplifier connects one-chip machine port and comparator simultaneously, comparator drives square wave average eguivalent voltage compared with comparative voltage to the igniting after amplifier process, if igniting drive singal is normal, holding point fireflood is moved square signal and is exported one-chip machine port to, if igniting drive singal is abnormal, comparator exports cut-off signals, hardware is made to turn off control end work, thus the input of cut-off point fireflood streaming current, to ensure that the igniting driving current inputted is always safe current, avoid the impact of improper electric current, thus ensure that the normal work of spark coil.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the spark coil anti-interference structure of aviation piston type engine of the present utility model.
Embodiment
Referring to the drawings and specific embodiments, the utility model is described in detail.
As shown in Figure 1, the anti-interference structure of aviation piston type engine ignition drive circuit of the present utility model, comprise: signal amplifier 1, operational amplifier 2, comparator 3, one-chip machine port 4 and hardware turn off control end 5, wherein signal amplifier is connected with operational amplifier and access point fire drive singal, the output terminal of operational amplifier connects one-chip machine port and comparator respectively, the input end of comparator accesses the output voltage of comparative voltage and operational amplifier simultaneously, and output terminal and the hardware of comparator turn off control end and is connected.
In the anti-interference structure of aviation piston type engine ignition drive circuit of the present utility model, spark coil On current is input in signal amplifier, operational amplifier is outputted to after signal amplifier amplifies signal, the output terminal of operational amplifier connects one-chip machine port and comparator simultaneously, comparator to the igniting drive singal after amplifier process compared with comparative voltage, if igniting drive singal is normal, holding point fireflood is moved square signal and is exported one-chip machine port to, if igniting drive singal is abnormal, comparator exports cut-off signals, hardware is made to turn off control end work, thus the input of cut-off point fireflood streaming current.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, although the utility model with preferred embodiment openly as above, but, and be not used to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, certainly the technology contents of announcement can be utilized to make a little change or modification, become the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solutions of the utility model, according to any simple modification that technical spirit of the present utility model is done above embodiment, equivalent variations and modification, all belong in the scope of technical solutions of the utility model.
Claims (1)
1. the anti-interference structure of an aviation piston type engine ignition drive circuit, it is characterized in that, comprise: signal amplifier, operational amplifier, comparator, one-chip machine port and hardware turn off control end, wherein signal amplifier is connected with operational amplifier and access point fireflood moved end mouth, the output terminal of operational amplifier connects one-chip machine port and comparator respectively, the input end of comparator accesses the output voltage of comparative voltage and operational amplifier simultaneously, and output terminal and the hardware of comparator turn off control end and is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520817206.3U CN205047346U (en) | 2015-10-22 | 2015-10-22 | Aviation piston engine ignition drive circuit's anti -interference structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520817206.3U CN205047346U (en) | 2015-10-22 | 2015-10-22 | Aviation piston engine ignition drive circuit's anti -interference structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205047346U true CN205047346U (en) | 2016-02-24 |
Family
ID=55340932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520817206.3U Expired - Fee Related CN205047346U (en) | 2015-10-22 | 2015-10-22 | Aviation piston engine ignition drive circuit's anti -interference structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205047346U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121829A (en) * | 2016-08-18 | 2016-11-16 | 四川泛华航空仪表电器有限公司 | The fault-preventing device of monitoring engine ignitor duty |
-
2015
- 2015-10-22 CN CN201520817206.3U patent/CN205047346U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121829A (en) * | 2016-08-18 | 2016-11-16 | 四川泛华航空仪表电器有限公司 | The fault-preventing device of monitoring engine ignitor duty |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160919 Address after: 300072 Tianjin City, Nankai District Wei Jin Road No. 92 Patentee after: Tianjin internal combustion engine Research Institute (Tianjin Motorcycle Technology Center) Patentee after: Tianjin University Address before: 300072 Tianjin City, Nankai District Wei Jin Road No. 92 Patentee before: Tianjin University |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160224 Termination date: 20161022 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |