CN101625373A - Device and method for judging and detecting signals of rotational speed sensor - Google Patents
Device and method for judging and detecting signals of rotational speed sensor Download PDFInfo
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- CN101625373A CN101625373A CN200910055888A CN200910055888A CN101625373A CN 101625373 A CN101625373 A CN 101625373A CN 200910055888 A CN200910055888 A CN 200910055888A CN 200910055888 A CN200910055888 A CN 200910055888A CN 101625373 A CN101625373 A CN 101625373A
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- engine controller
- speed sensor
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Abstract
The invention relates to a device for judging and detecting signals of a rotational speed sensor, which comprises an engine controller, a rotational speed sensor body connected with the engine controller through a plug group and a first measuring point positioned at the junction of the engine controller and the plug group, wherein, the plug group comprises a signal connection plug, one end of the signal connection plug is connected with a signal output end of the rotational speed sensor body, the other end is connected with the engine controller, and the device further comprises a signal isolation device and a second measuring point, one end of the signal isolation device is connected with the signal output end of the rotational speed sensor body, the other end is connected with the signal connection plug, and the second measuring point is positioned between the signal isolation device and the signal output end of the rotational speed sensor body. The device can effectively judge whether signal loss is caused by no signal output of the rotational speed sensor body or plug connection failure or a problem of the engine controller according to signal detection of the measuring points, thereby rapidly judging specific reasons, carrying out rectification in time and saving detection time.
Description
Technical field
The present invention relates to the hall device is the engine speed sensor field of core, relates in particular to a kind of apparatus and method of judging and detecting signals of rotational speed sensor.
Background technology
Engine speed sensor (Hall effect Sensor) is installed in the left side of engine cylinder body and leans on into flywheel place.The signal triggering wheel of sensor is installed between flywheel and the bent axle, rotates with bent axle.Engine speed sensor is a Hall element, is used for accurately surveying the angle position and the engine speed of bent axle.Engine rotational speed signal triggers wheel a wide cingulum, it and the wheel of the signal triggering on camshaft are together, trigger the Hall element on bent axle and the camshaft respectively, the phase place that its signal comes each cylinder of identification of Engine for engine controller (EMS ECU), and then accurately control the igniting and the oil spout of engine cylinder.
The Hall wheel speed sensors is by permanent magnet, composition such as Hall element and electronic circuit, the magnetic line of force of permanent magnet pass Hall element and lead to signal triggering wheel, when the tooth root of signal triggering wheel during over against Hall element, the magnetic line of force that passes Hall element disperses, magnetic field relatively a little less than; And when the tooth top of signal triggering wheel during over against Hall element, pass the magnetic line of force of Hall element to concentrate, magnetic field is stronger relatively.When gear rotates, make the density of line of magnetic force of passing Hall element change, thereby cause that the variation of Hall voltage, Hall element will export the quasi-sine-wave voltage of a millivolt (mV) grade.This signal also need be amplified by electronic circuit, shaping, finally converts the pulse voltage of standard to.
Engine speed sensor is one of core devices that impels engine running.If engine controller is not received the signal of engine speed sensor, engine is flame-out immediately maybe can not to be started.As shown in Figure 1, existing engine speed sensor comprise engine controller (EMS ECU), the speed probe body (Hall effect Sensor) that is connected by plug group (Connect) with engine controller and be positioned at engine controller (EMS ECU) and the measurement point (MP) of plug group (Connect) junction.Generally speaking, the signal of measuring engine speed sensor at measurement point (MP) is normal, but, in case the dropout of sensor occurs, conventional device and method are difficult to judge that its reason is that the speed probe body does not have signal output, or the fault of plug group (Connect) connection, or the hardware or the software processes of engine controller (EMS ECU) are out of joint.Do not have signal as measurement point MP among Fig. 1, can not distinguish is the sensor problem, or each plug connection in the plug group is bad, or the problem of EMS.
Given this, the apparatus and method that are necessary to provide a kind of new judgement and detect signals of rotational speed sensor are to address the above problem.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of apparatus and method of judging and detecting signals of rotational speed sensor, to solve the dropout that occurs speed probe in the prior art, is difficult to the problem of the concrete reason of failure judgement.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme: the device of judging and detect signals of rotational speed sensor, the speed probe body that it comprises engine controller, be connected by the plug group with engine controller and be positioned at engine controller and first measurement point of plug group junction, described plug group comprises that an end is connected with the signal output part of speed probe body, the signal attachment plug that the other end is connected with engine controller;
This device comprises that further an end is connected with the signal output part of speed probe body, signal isolating device that the other end is connected with signal attachment plug and second measurement point between the signal output part of signal isolating device and speed probe body;
Described signal isolating device comprises that power supply, the pull-up resistor that is connected with power supply, input end link to each other with pull-up resistor, first isolating diode and input end that output terminal is connected with the signal output part of speed probe body link to each other with signal attachment plug, second isolating diode that output terminal is connected with the signal output part of speed probe body.
The present invention also comprises a kind of method of judging and detecting signals of rotational speed sensor, and this method may further comprise the steps:
Measure the output signal of first measurement point and second measurement point;
If first measurement point and second measurement point all have signal, be judged as engine controller and break down, no signal output;
The second measurement point no signal is judged as the plug group to break down if first measurement point has signal, no signal output;
If the equal no signal output of first measurement point and second measurement point is judged as speed probe body (3) and breaks down, no signal output.
The present invention is by providing a kind of apparatus and method of judging and detecting signals of rotational speed sensor, input according to measurement point, effectively judging dropout is itself not have signal output because of the speed probe body, or the fault that plug connects, still engine controller is out of joint, thereby judge concrete reason fast, in time rectify and improve and saved detection time.
Description of drawings
Fig. 1 is existing engine speed sensor input synoptic diagram;
Fig. 2 is an engine speed sensor input synoptic diagram of the present invention.
Embodiment
Further specify concrete implementation step of the present invention below in conjunction with accompanying drawing.
Please refer to shown in Figure 2, the device of this judgement and detection signals of rotational speed sensor, the speed probe body 3 that it comprises engine controller 1, be connected by plug group 2 with engine controller 1 and be positioned at engine controller 1 and first measurement point 4 of plug group 2 junctions, described plug group 2 comprises that an end is connected with the signal output part of speed probe body 3, the signal attachment plug 21 that the other end is connected with engine controller 1; Described speed probe body 3 provides the position signalling of engine speed and bent axle for engine controller 1.
This device comprises that further an end is connected with the signal output part of speed probe body 3, signal isolating device 9 that the other end is connected with signal attachment plug 21 and second measurement point 10 between the signal output part of signal isolating device 9 and speed probe body 3;
Described signal isolating device 9 is isolated 7,8 and annex pull-up resistors 6 of diode and is formed by 1 additional+5,2 of 5V power supply.
One end of pull-up resistor 6 links to each other with power supply 5, the other end links to each other with isolation diode 7 with input end, the output terminal of first isolating diode 7 (negative pole) is connected with the signal output part of speed probe body 3, and the input end of first isolating diode 7 (positive pole) links to each other with an end of pull-up resistor 6.The input end of second isolating diode 8 (positive pole) links to each other with signal attachment plug 21, and output terminal (negative pole) is connected with the signal output part of speed probe body 3.
Described first measurement point 4 also can be positioned at the output terminal intersection of first isolating diode 7 and second isolating diode 8.Described second measurement point 10 also can be positioned at engine controller 1.
During detection, if the hardware circuit of EMS inside is out of joint, so, engine controller 1 inside+acting in conjunction of 5V power supply and pull-up resistor R1 under, the Hall element signal can be through second measurement point 10, and directly arrive first measurement point 4 by second isolating diode 8, that is, first measurement point 4 and second measurement point 10 all can record signal of sensor.During this time, first isolating diode 7 will be isolated the 5V power supply of additional+5V power supply 5 and engine controller inside.That is, first measurement point 4 and second measurement point 10 all have signal, then can be judged as engine controller and break down.
If problem goes out the plug place at engine controller or sensor, sensor signal is passed less than the engine controller place because of open circuit, the pull-up resistor R1 of engine controller inside is just inoperative so.Add the isolation of second isolating diode 8, make the measurement point 4 of winning to record signal.Meanwhile, under the effect of additional+5 power supplys 5,, make the speed probe body still can output signal by pull-up resistor 6.That is, second measurement point 10 has signal and first measurement point, 4 no signals then can judge it is wire harness plug problem.
If sensor itself is out of joint, first measurement point 4 and second measurement point 10 all do not have sensor signal output so.That is, first measurement point 4 and the 10 equal no signal outputs of second measurement point, sensor breaks down so.
On the car that goes wrong, use above-mentioned spacer assembly and detect, find second measurement point 10 and the 4 equal no signal outputs of first measurement point.Can conclude, be the problem of speed probe body at once.This sensor is the product of continent (being Siemens originally) company.In face of strong evidence, the said firm also has to its product is done further research, and has found product sensor to have the reason of defective.
The device that relates among the present invention is conventional components and parts, belongs to the category that those skilled in the art are familiar with, and does not repeat them here.
Above-mentioned description to case study on implementation is can understand and apply the invention for the ease of those skilled in the art.The person skilled in the art obviously can easily make various modifications to these case study on implementation, and needn't pass through performing creative labour being applied in the General Principle of this explanation in other case study on implementation.Therefore, the invention is not restricted to the case study on implementation here, those skilled in the art should be within protection scope of the present invention for improvement and modification that the present invention makes according to announcement of the present invention.
Claims (4)
1. judge and detect the device of signals of rotational speed sensor, the speed probe body (3) that it comprises engine controller (1), be connected by plug group (2) with engine controller (1) and be positioned at engine controller (1) and first measurement point (4) of plug group (2) junction, described plug group (2) comprises that an end is connected with the signal output part of speed probe body (3), the signal attachment plug (21) that the other end is connected with engine controller (1);
It is characterized in that: this device comprises that further an end is connected with the signal output part of speed probe body (3), the signal isolating device (9) that the other end is connected with signal attachment plug (21) and be positioned at signal isolating device (9) and the signal output part of speed probe body (3) between second measurement point (10);
Described signal isolating device (9) comprises that power supply (5), the pull-up resistor (6) that is connected with power supply (5), input end link to each other with pull-up resistor (6), first isolating diode (7) and input end that output terminal is connected with the signal output part of speed probe body (3) link to each other with signal attachment plug (21), second isolating diode (8) that output terminal is connected with the signal output part of speed probe body (3).
2. the device of judgement as claimed in claim 1 and detection signals of rotational speed sensor, it is characterized in that: described first measurement point (4) is positioned at the output terminal intersection of first isolating diode (7) and second isolating diode (8).
3. the device of judgement as claimed in claim 1 and detection signals of rotational speed sensor, it is characterized in that: described second measurement point (10) is positioned at engine controller (1).
4. method of utilizing the described device of claim 1 to judge and detect signals of rotational speed sensor is characterized in that this method may further comprise the steps:
Measure the output signal that first measurement point (4) and second measurement point (10) are located;
If first measurement point (4) and second measurement point (10) all have signal, be judged as engine controller (1) and break down, no signal output;
Second measurement point (10) no signal is judged as plug group (2) to break down if first measurement point (4) has signal, no signal output;
If all no signal output of first measurement point (4) and second measurement point (10) is judged as speed probe body (3) and breaks down, no signal output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100558888A CN101625373B (en) | 2009-08-04 | 2009-08-04 | Device and method for judging and detecting signals of rotational speed sensor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100558888A CN101625373B (en) | 2009-08-04 | 2009-08-04 | Device and method for judging and detecting signals of rotational speed sensor |
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| CN101625373A true CN101625373A (en) | 2010-01-13 |
| CN101625373B CN101625373B (en) | 2011-01-19 |
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| CN2009100558888A Expired - Fee Related CN101625373B (en) | 2009-08-04 | 2009-08-04 | Device and method for judging and detecting signals of rotational speed sensor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102343885A (en) * | 2010-07-30 | 2012-02-08 | 比亚迪股份有限公司 | Unlocking detection system and method, and steering locking device |
| CN106153103A (en) * | 2015-02-20 | 2016-11-23 | 克洛纳测量技术有限公司 | For determining the field apparatus measuring parameter and the method for transmission |
| CN107918080A (en) * | 2016-10-11 | 2018-04-17 | 大陆汽车电子（连云港）有限公司 | Sensor connection state detection method, device and sensor |
| CN107942850A (en) * | 2017-10-31 | 2018-04-20 | 青岛海尔智能技术研发有限公司 | Household electrical appliances method for diagnosing faults and system |
| CN109115247A (en) * | 2017-06-26 | 2019-01-01 | 大陆汽车电子（连云港）有限公司 | System and method for being connect between monitoring sensor and connector |
| CN113791239A (en) * | 2021-09-01 | 2021-12-14 | 哈尔滨工程大学 | Diesel engine rotating speed signal preamplification device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100474806B1 (en) * | 2003-01-17 | 2005-03-09 | 주식회사 만도 | Detecting circuits for motor sensing sensor's fail of the motor vehicle |
| CN100587494C (en) * | 2007-11-20 | 2010-02-03 | 北京金万安汽车电子技术研发有限公司 | Automobile wheel speed sensor fault monitoring method |
-
2009
- 2009-08-04 CN CN2009100558888A patent/CN101625373B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102343885A (en) * | 2010-07-30 | 2012-02-08 | 比亚迪股份有限公司 | Unlocking detection system and method, and steering locking device |
| CN102343885B (en) * | 2010-07-30 | 2014-01-01 | 比亚迪股份有限公司 | Unlocking detection system and method, and steering locking device |
| CN106153103A (en) * | 2015-02-20 | 2016-11-23 | 克洛纳测量技术有限公司 | For determining the field apparatus measuring parameter and the method for transmission |
| CN107918080A (en) * | 2016-10-11 | 2018-04-17 | 大陆汽车电子（连云港）有限公司 | Sensor connection state detection method, device and sensor |
| CN109115247A (en) * | 2017-06-26 | 2019-01-01 | 大陆汽车电子（连云港）有限公司 | System and method for being connect between monitoring sensor and connector |
| CN109115247B (en) * | 2017-06-26 | 2021-03-02 | 大陆汽车电子（连云港）有限公司 | System and method for monitoring connection between sensor and connector |
| CN107942850A (en) * | 2017-10-31 | 2018-04-20 | 青岛海尔智能技术研发有限公司 | Household electrical appliances method for diagnosing faults and system |
| CN113791239A (en) * | 2021-09-01 | 2021-12-14 | 哈尔滨工程大学 | Diesel engine rotating speed signal preamplification device |
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| Publication number | Publication date |
|---|---|
| CN101625373B (en) | 2011-01-19 |
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Granted publication date: 20110119 Termination date: 20200804 |