CN203011933U - Rotating speed detection system for engine - Google Patents
Rotating speed detection system for engine Download PDFInfo
- Publication number
- CN203011933U CN203011933U CN 201220600533 CN201220600533U CN203011933U CN 203011933 U CN203011933 U CN 203011933U CN 201220600533 CN201220600533 CN 201220600533 CN 201220600533 U CN201220600533 U CN 201220600533U CN 203011933 U CN203011933 U CN 203011933U
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- signal
- engine
- processor
- rotating speed
- exhaust
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Abstract
The utility model discloses a rotating speed detection system for an engine, comprising a pressure sensor, a signal processor, a central processor and a data output device. The pressure sensor is arranged in an exhaust channel of the engine, a signal output end of the pressure sensor is connected with a signal input end of the signal processor, a signal output end of the signal processor is connected with a signal input end of the central processor, and a signal output end of the central processor is connected with a signal input end of the data output device. The proportional relation between exhaust frequency and rotating speed of the engine is utilized, and the exhaust frequency is represented by instant increase or decrease of exhaust pressure, so that frequency signals of increase and decrease of the exhaust pressure of the engine are acquired and pressure signals are converted into rotating speed signals of the engine via signal processing and calculating. Thus, influence of external factors on detection results can be avoided, accuracy of detection and output results can be ensured, and working states of the engine can be effectively controlled by a control system.
Description
Technical field
The utility model relates to a kind of engine accessory parts, particularly a kind of engine speed detection system.
Background technology
Having started rotating speed is the important performance indexes of engine, in motion, need to monitor rotating speed.
Traditionally engine speed being monitored is mainly by mechanical connection and transmission, and engine speed is embodied on the mechanical type instrument, and the tachometer gage of this structure is owing to adopting mechanical connection, and structure is comparatively complicated, so failure rate is high, the indication out of true.
For overcoming the above problems, two kinds of digital tachometers have appearred in prior art, a kind of is the tachometer gage that adopts sensor and related circuit to consist of, motion by the moving component of the direct induction generator of sensor, by after processing circuit processes with tach signal output, the tachometer gage of this structure must contact or the moving component of induction generator, application be mechanical principle, the installation process more complicated, signals collecting easily is interfered and distortion; For overcoming the above problems, the another kind of device that detects rotating speed by the noise of engine has appearred, although this device use procedure is fairly simple, also can measure engine speed according to causing in theory, but be easy to be subjected to the interference of outside noise, such as, other voice signals just impact testing result than being easier to, and are that testing result has relatively large deviation.
Therefore, need to improve the engine speed detection system, easy to use, be not subjected to external interference in operating process, measurement result is accurate.
Summary of the invention
The purpose of this utility model is to provide a kind of engine speed detection system, guarantees the accuracy of testing result, and is easy to use during detection simultaneously, can avoid extraneous factor for the impact of testing result, and volume is little, easy to carry simultaneously.
The purpose of this utility model is achieved through the following technical solutions: a kind of engine speed detection system, comprise pressure transducer, signal processor, center processor and data output apparatus, described pressure transducer is arranged in engine exhaust passage, the signal output part of pressure transducer is connected with the signal processor signal input part, the signal output part that signal processor is incited somebody to action is connected with the signal input part of center processor, the signal input part of the signal output part connection data output device of center processor.
Described pressure transducer is fixedly installed in the engine exhaust cylinder;
The signal output part of described signal processor is the signal input part of connection control system also;
Described data output apparatus is display.
The beneficial effects of the utility model are: the utility model utilizes the proportionate relationship of engine exhaust frequency and rotating speed, and the exhaust frequency is to reduce to show by discharge pressure moment increase, gather engine back pressure and increase the frequency signal that reduces, process and computation process by signal, make pressure signal convert the tach signal of engine to, can avoid extraneous factor for the impact of testing result, guarantee the accuracy of detection and Output rusults, and control system is control effectively to engine working conditions.
Description of drawings
Below in conjunction with drawings and Examples, the utility model is further described.
Fig. 1 is principle schematic of the present utility model.
Embodiment
Fig. 1 is principle schematic of the present utility model, as shown in the figure: the engine speed detection system of the present embodiment, comprise pressure transducer 1, signal processor 2, center processor 3 and data output apparatus 4, pressure transducer 1 is arranged in engine exhaust passage, in the present embodiment, pressure transducer 1 is fixedly installed in the engine exhaust cylinder, and installation and removal are convenient, is easy to maintenance and changes; The signal output part of pressure transducer 1 is connected with signal processor 2 signal input parts, the signal output part that signal processor 2 is incited somebody to action is connected with the signal input part of center processor 3, the signal input part of the signal output part connection data output device 4 of center processor 3, data output apparatus is the display that is arranged on panel board, can replace existing instrument, reach the purpose of accurate demonstration rotating speed; The signal output part of center processor 3 is the signal input part of connection control system 5 also, and control system is controlled the working condition of engine according to the actual speed signal that receives, and can improve to greatest extent engine efficiency, energy savings;
Claims (4)
1. engine speed detection system, it is characterized in that: comprise pressure transducer, signal processor, center processor and data output apparatus, described pressure transducer is arranged in engine exhaust passage, the signal output part of pressure transducer is connected with the signal processor signal input part, the signal output part of signal processor is connected with the signal input part of center processor, the signal input part of the signal output part connection data output device of center processor.
2. engine speed detection system according to claim 1, it is characterized in that: described pressure transducer is fixedly installed in the engine exhaust cylinder.
3. engine speed detection system according to claim 2, it is characterized in that: the signal output part of described signal processor is the signal input part of connection control system also.
4. engine speed detection system according to claim 3, it is characterized in that: described data output apparatus is display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220600533 CN203011933U (en) | 2012-11-15 | 2012-11-15 | Rotating speed detection system for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220600533 CN203011933U (en) | 2012-11-15 | 2012-11-15 | Rotating speed detection system for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203011933U true CN203011933U (en) | 2013-06-19 |
Family
ID=48603515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220600533 Expired - Fee Related CN203011933U (en) | 2012-11-15 | 2012-11-15 | Rotating speed detection system for engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203011933U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103513050A (en) * | 2013-10-08 | 2014-01-15 | 江阴众和电力仪表有限公司 | Rotating speed measuring method and device of rotating speed analog device in LOCA furnace |
| CN104833815A (en) * | 2015-03-04 | 2015-08-12 | 诸城福田汽车科技开发有限公司 | Method, apparatus and equipment for measuring rotating speed of engine |
| CN109752565A (en) * | 2019-03-02 | 2019-05-14 | 吉林大学 | A kind of tractor engine measurement of rotating speed meter |
-
2012
- 2012-11-15 CN CN 201220600533 patent/CN203011933U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103513050A (en) * | 2013-10-08 | 2014-01-15 | 江阴众和电力仪表有限公司 | Rotating speed measuring method and device of rotating speed analog device in LOCA furnace |
| CN104833815A (en) * | 2015-03-04 | 2015-08-12 | 诸城福田汽车科技开发有限公司 | Method, apparatus and equipment for measuring rotating speed of engine |
| CN109752565A (en) * | 2019-03-02 | 2019-05-14 | 吉林大学 | A kind of tractor engine measurement of rotating speed meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20141115 |
|
| EXPY | Termination of patent right or utility model |