CN201614979U - Automobile engine rotating speed signal acquisition system - Google Patents
Automobile engine rotating speed signal acquisition system Download PDFInfo
- Publication number
- CN201614979U CN201614979U CN201020125082XU CN201020125082U CN201614979U CN 201614979 U CN201614979 U CN 201614979U CN 201020125082X U CN201020125082X U CN 201020125082XU CN 201020125082 U CN201020125082 U CN 201020125082U CN 201614979 U CN201614979 U CN 201614979U
- Authority
- CN
- China
- Prior art keywords
- magnetoelectric transducer
- control unit
- rotating speed
- signal
- shaping circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses an automobile engine rotating speed signal acquisition system, which comprises a magnetoelectric sensor and an engine electronic control unit which are connected, wherein the automobile engine rotating speed signal acquisition system further comprises a signal isolation circuit, a shaping circuit and a control unit, the signal isolation circuit is respectively connected with the magnetoelectric sensor and the shaping circuit, and the shaping circuit is connected with the control unit. The automobile engine rotating speed signal acquisition system does not change the connection relation of the engine electronic control unit and the magnetoelectric sensor, guarantees the accuracy of signal acquisition of the engine electronic control unit and the steady work of an engine, adds a signal isolation circuit, leads engine electronic control unit to share a magnetoelectric sensor with other control units, reduces the cost, and also reduces the mounting complexity.
Description
Technical field
The utility model relates to a kind of motor car engine signal acquiring system, is specifically related to a kind of rotating speed of automobile engine signal acquiring system.
Background technique
Magnetoelectric tachometric transducer (being magnetoelectric transducer) is the power generation type sensor that designs at measure speed gears, and it does not need power supply, and the magnetic gap that the measure speed gears rotation causes changes, induced potential in the probe coil of magnetoelectric transducer, and its amplitude is relevant with rotating speed.Magnetoelectric transducer very is fit to measure the rotating speed of motor, and the rotating speed of motor is very important signal in engine electric-controlled unit, signal has interference will cause the fluctuation of service of motor slightly, particularly when high engine speeds turns round, so this signal is difficult to again for other control unit use.
Conventional design is the signal processing module with an one-to-two, do like this and just mean that engine electric-controlled unit is the signal that other resume module of process of receiving is crossed, not original crankshaft-position signal, will certainly cause the instability of motor under certain state like this.Another kind of way is exactly to increase a magnetoelectric transducer again, and it is high a lot of that the cost of this way is wanted, and be not easy to install.
The model utility content
In view of this, the purpose of this utility model provides a kind of rotating speed of automobile engine signal acquiring system, it does not change the wiring relation of engine electric-controlled unit and magnetoelectric transducer, guarantee the accuracy of engine electric-controlled unit signals collecting and the stable operation of motor, increased a signal isolation circuit, the signal that magnetoelectric transducer is collected passes to other control unit use after signal isolation circuit is isolated amplification.
To achieve these goals, the utility model is by the following technical solutions:
A kind of rotating speed of automobile engine signal acquiring system, comprise magnetoelectric transducer 1, engine electric-controlled unit 2, magnetoelectric transducer 1 links to each other with engine electric-controlled unit 2, wherein, also comprise a signal isolation circuit 3, shaping circuit 4 and control unit 5, signal isolation circuit 3 is connected with shaping circuit 4 with magnetoelectric transducer 1 respectively, and shaping circuit 4 is connected with control unit 5.
Further, signal isolation circuit 3 comprises resistance 31, diode 32, current-limiting resistance 33 and optical coupler 34, optical coupler 34 comprises light emitting diode and phototransistor, resistance 31 1 ends connect magnetoelectric transducer 1 and current-limiting resistance 33, the other end connects diode 32, the other end of diode 32 is connected with magnetoelectric transducer 1, current-limiting resistance 33 1 ends are connected with magnetoelectric transducer 1, and the other end is connected with light emitting diode, and the other end of light emitting diode is connected on the magnetoelectric transducer, the collector electrode of phototransistor connects power supply VCC and shaping circuit 4, grounded-emitter connection.
The beneficial effects of the utility model are:
The utility model does not change the wiring relation of engine electric-controlled unit and magnetoelectric transducer, engine electric-controlled unit directly links to each other with the output of magnetoelectric transducer, guarantee the accuracy of engine electric-controlled unit signals collecting and the stable operation of motor, can not cause common ground loop interference etc. to cause the phenomenon of motor fluctuation of service because of extracting signal; Increase a signal isolation circuit, the signal that magnetoelectric transducer is collected passes to other control unit use after signal isolation circuit is isolated amplification, the shared magnetoelectric transducer of engine electric-controlled unit and other control unit has reduced cost, has also reduced the complexity of installing.
Other advantages of the present utility model, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on being conspicuous to those skilled in the art, perhaps can from practice of the present utility model, obtain instruction to investigating hereinafter.Target of the present utility model and other advantages can realize and obtain by specifically noted structure in following specification or the accompanying drawing.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
As shown in Figure 1, the utility model comprises magnetoelectric transducer 1, engine electric-controlled unit 2, signal isolation circuit 3, shaping circuit 4 and control unit 5, the output terminal of magnetoelectric transducer 1 respectively with engine electric-controlled unit 2 and signal isolation circuit 3 with link to each other, signal isolation circuit 3 is connected with shaping circuit 4, and shaping circuit 4 is connected with control unit 5.
Current-limiting resistance 33 prevents that for the current-limiting resistance of optical coupler input resistance 31 and diode 32 are optocoupler loop symmetrical cell because of the too high optical coupler that burns out of magnetoelectric transducer output voltage, prevent because of gather signal to original signal cause asymmetric.Signal after signal isolation circuit 3 is isolated amplification, process shaping circuit 4 is a square signal with the signal conversion of magnetoelectric transducer collection again, realized a signals collecting mode that magnetoelectric transducer uses for two control units, and in the process of gathering signal, can not cause too much influence original signal.
Claims (2)
1. rotating speed of automobile engine signal acquiring system, comprise magnetoelectric transducer (1), engine electric-controlled unit (2), magnetoelectric transducer (1) links to each other with engine electric-controlled unit (2), it is characterized in that: also comprise a signal isolation circuit (3), shaping circuit (4) and control unit (5), signal isolation circuit (3) are connected with shaping circuit (4) with magnetoelectric transducer (1) respectively, and shaping circuit (4) is connected with control unit (5).
2. rotating speed of automobile engine signal acquiring system according to claim 1, it is characterized in that: signal isolation circuit (3) comprises resistance (31), diode (32), current-limiting resistance (33) and optical coupler (34), optical coupler (34) comprises light emitting diode and phototransistor, resistance (31) one ends connect magnetoelectric transducer (1) and current-limiting resistance (33), the other end connects diode (32), the other end of diode (32) is connected with magnetoelectric transducer (1), current-limiting resistance (33) one ends are connected with magnetoelectric transducer (1), the other end is connected with light emitting diode, the other end of light emitting diode is connected on the magnetoelectric transducer, the collector electrode of phototransistor connects power supply VCC and shaping circuit (4), grounded-emitter connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020125082XU CN201614979U (en) | 2010-03-08 | 2010-03-08 | Automobile engine rotating speed signal acquisition system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020125082XU CN201614979U (en) | 2010-03-08 | 2010-03-08 | Automobile engine rotating speed signal acquisition system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201614979U true CN201614979U (en) | 2010-10-27 |
Family
ID=43001348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020125082XU Expired - Fee Related CN201614979U (en) | 2010-03-08 | 2010-03-08 | Automobile engine rotating speed signal acquisition system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201614979U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110514447A (en) * | 2019-05-30 | 2019-11-29 | 吉林大学 | A kind of synchronous optical test macro based on optical engine |
| CN114814714A (en) * | 2022-06-30 | 2022-07-29 | 国网湖北省电力有限公司营销服务中心(计量中心) | Photoelectric sampling device compatible with different types of intelligent electric energy meter detection |
-
2010
- 2010-03-08 CN CN201020125082XU patent/CN201614979U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110514447A (en) * | 2019-05-30 | 2019-11-29 | 吉林大学 | A kind of synchronous optical test macro based on optical engine |
| CN110514447B (en) * | 2019-05-30 | 2024-03-22 | 吉林大学 | Synchronous optical test system based on optical engine |
| CN114814714A (en) * | 2022-06-30 | 2022-07-29 | 国网湖北省电力有限公司营销服务中心(计量中心) | Photoelectric sampling device compatible with different types of intelligent electric energy meter detection |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201614979U (en) | Automobile engine rotating speed signal acquisition system | |
| CN201281637Y (en) | System for measuring temperature field of startup and electrification integrated motor | |
| CN102445350A (en) | System and method for measuring overall vehicle driving quality | |
| CN101672237B (en) | Ignition angle gauge of pointer type engine | |
| CN201202564Y (en) | Dynamic response time test system of electric control gasoline injector | |
| CN110700915A (en) | OCV valve measurement and control device, method and system | |
| CN104454487B (en) | Automobile air compressor control device | |
| CN103378773A (en) | Direct current permanent magnet brushless motor controller | |
| CN201730687U (en) | Digital intelligent electronic speed regulator for engine | |
| CN202253872U (en) | Installation structure of range hood with sensor | |
| CN204679283U (en) | Multifunctional vehicle pilot system | |
| CN202937359U (en) | Diesel electronic control multiple-power fuel injection system | |
| CN204663683U (en) | A kind of control system of explosive motor and internal combustion engine generator group | |
| CN204003121U (en) | Diesel exhaust recirculation control system | |
| CN203337388U (en) | Series hybrid assembly test stand | |
| CN202494565U (en) | Wind power gear box test data detection and acquisition system | |
| CN202690498U (en) | Electric automobile electric drive controller fan control circuit | |
| CN202140185U (en) | Electric injection ignition debugging device for motorcycle engine | |
| CN202348516U (en) | Controller area network (CNA) bus-based automobile engine ignition advance angle control device | |
| CN201982178U (en) | Digital electronic speed governor control circuit of diesel engine of sophisticated power station | |
| CN201121541Y (en) | Car engine management system | |
| CN210829425U (en) | OCV valve measurement and control device and system | |
| CN215408891U (en) | Electronic accelerator actuator | |
| CN202931217U (en) | Three-phase grid-connected inverter employing optical fiber transformation | |
| CN210769101U (en) | Electric control unit of motorcycle fuel injection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101027 Termination date: 20130308 |