CN102121834B - Detection method for throttle valve position sensor detection device - Google Patents
Detection method for throttle valve position sensor detection device Download PDFInfo
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- CN102121834B CN102121834B CN2010105667403A CN201010566740A CN102121834B CN 102121834 B CN102121834 B CN 102121834B CN 2010105667403 A CN2010105667403 A CN 2010105667403A CN 201010566740 A CN201010566740 A CN 201010566740A CN 102121834 B CN102121834 B CN 102121834B
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Abstract
The invention discloses a detection method for a throttle valve position sensor detection device, which is characterized by comprising a throttle valve position sensor static detection flow and a throttle valve position sensor dynamic detection flow. The detection method has the effects that: a throttle valve signal serves as a judgment basis, and the throttle valve detection device with an additional judgment function can realize the functions of incoming detection, loading positioning detection and current opening and voltage value display of a throttle valve position sensor.
Description
Technical field
The invention belongs to a kind of TPS detection technique, the detection method of the TPS pick-up unit that especially a kind of motorcycle is used.
Background technology
TPS is used to monitor the size of throttle opening value, and sends to ECU to the throttle opening value, ECU binding engine rotating speed, information such as the aperture of air throttle, control air-fuel ratio.Work under the air-fuel ratio state of the best to guarantee engine.
Therefore, the reliability of TPS, the accuracy of amount of supplied air when being directly connected to engine operation.
Detection method to TPS was the method for multimeter measuring resistance mostly in the past, or simple its voltage of A/D conversion demonstration, judged voluntarily by the testing staff whether TPS is qualified.
The shortcoming of prior art is: no matter pass through the method for multimeter measuring resistance, or the mode of A/D conversion display voltage, these operations are all too numerous and diverse, and function singleness, can not monitor corner/voltage ratio, complex datas such as corner size.
Summary of the invention
Problem to be solved by this invention is to provide the detection method of TPS pick-up unit; Can the fast detecting valve position sensor whether qualified, and can go into factory's detections, entrucking detection and localization, the current aperture of demonstration and magnitude of voltage by the Rapid Realization TPS.
For achieving the above object, the present invention provides the detection method of TPS pick-up unit, form by TPS Static Detection flow process and TPS detection of dynamic flow process,
Wherein sensor Static Detection flow process adopts following steps:
The Quality Detection flow process of sensor before entrucking,
The unloaded TPS that will advance factory's detection links to each other with first stitch of sensor socket;
Main control chip reads the throttle position signal of TPS;
The minimum voltage value of main control chip record throttle position signal;
Main control chip judges that whether this minimum voltage value is less than unloaded reference voltage level; If minimum voltage value is more than or equal to unloaded reference voltage level; Main control chip then shows high-voltage value through LCD display, and turns back to the step of the minimum voltage value of said main control chip record throttle position signal;
Show high-voltage value when unloaded, can judge that then current TPS has fault, can directly change next TPS.
If minimum voltage value is less than unloaded reference voltage level;
Then clockwise rotate the TPS core;
Main control chip judges whether the magnitude of voltage of throttle position signal raises;
If magnitude of voltage does not raise, then return and continue to judge whether the magnitude of voltage of throttle position signal raises;
The Static Detection flow process mainly is whether the detection range of detection TPS is qualified; Whether the minimum value that at first detects range is less than 0.2V; The magnitude of voltage that 0-0.1V is arranged after TPS generally powers on, can unloaded reference voltage level be set 0.2V is basis for estimation.Can the permissible error scope that be fully loaded with reference voltage be set in 4.4V to 4.6V.
After rotating the TPS core, the TPS magnitude of voltage is changed to maximal value by minimum value, judges that whether qualified whether maximal value be detection TPS another standard at 4.4V to 4.6V.
But when rotating the TPS core; Be easy to generate and beat,, need carry out continuous several times to the throttle position signal voltage max and judge for avoiding eliminating the influence of undesired signal; As n1 and n2 are set at 20; Then will carry out continual 20 times and judge, have only judge unanimity 20 times after, just can draw reliable result.
Therefore, can say also that the starting point of judging for 20 times is arranged on makes initiation parameter time=0, this step of Err=0.
Also can the starting point of judging for 20 times be arranged on whether person's one step in the permissible error scope that is fully loaded with reference voltage of throttle position signal voltage max that main control chip judges TPS output.
Repeatedly judge the reliability and stability of the automatic measuring ability that has guaranteed the TPS pick-up unit.
If magnitude of voltage raises, then make initiation parameter time=0, Err=0;
Main control chip judges that the throttle position signal voltage max of TPS output is whether in the permissible error scope of fully loaded reference voltage;
If not in the permissible error scope, then make Err=Err+1, whether judge Err again greater than n1 time, if Err is not more than n1 time, then returns and continue to judge the whether step in the permissible error scope that is fully loaded with reference voltage of throttle position signal voltage max; If Err greater than n1 time, then shows fault by LCD display, and return the step that said main control chip writes down the minimum voltage value of throttle position signal;
If in the permissible error scope, the 1ms that then delays time makes time=time+1;
Whether judge time greater than n2 time,, and return and continue to judge the whether step in the permissible error scope that is fully loaded with reference voltage of throttle position signal voltage max if time is not more than n2 time;
If time is greater than n2 time, then main control chip judges that TPS is qualified, and LCD display shows to detect to be accomplished;
Take off TPS;
Main control chip judges whether current magnitude of voltage is less than or equal to said minimum voltage value;
If current magnitude of voltage is not less than minimum voltage value, then returns and continue to judge whether current magnitude of voltage is less than or equal to said minimum voltage value;
If current magnitude of voltage, then returns the step of the minimum voltage value of said main control chip record throttle position signal less than minimum voltage value;
Said TPS detection of dynamic flow process is:
TPS is installed to the enterprising luggage car monitoring of air throttle;
After the entrucking, the TPS core can turn an angle, but whether the angle of rotating is qualified, then need detect.
The angle that guarantees to rotate is between the upper and lower limit of set angle.
Can be with the identification through current magnitude of voltage, adjusting TPS core guarantees that current magnitude of voltage in the setting voltage interval, just can confirm installation qualification.
Main control chip reads the throttle position signal of TPS;
Main control chip then shows the current magnitude of voltage of TPS through LCD display;
Main control chip judges that whether current magnitude of voltage is less than the interval lower limit AD1 of setting voltage;
If current magnitude of voltage is less than the interval lower limit AD1 of setting voltage;
LCD display shows that the TPS core rotates counterclockwise
The pairing air throttle anglec of rotation of current magnitude of voltage of LCD display and current magnitude of voltage:
(AD1-TPS)/the 0.05+1=air throttle is rotated counterclockwise angle;
Turn back to the step that said main control chip reads the throttle position signal of TPS;
If current magnitude of voltage is not less than the interval lower limit AD1 of setting voltage, then main control chip judges that whether current magnitude of voltage is greater than the interval higher limit AD2 of setting voltage;
LCD display shows that the TPS core clockwise rotates
The pairing air throttle anglec of rotation of current magnitude of voltage of LCD display and current magnitude of voltage:
(TPS-AD2)/0.05+1=air throttle dextrorotation gyration;
Turn back to the step that said main control chip reads the throttle position signal of TPS;
If current magnitude of voltage is not more than the interval higher limit AD2 of setting voltage, then LCD display shows that entrucking is qualified.
Said TPS pick-up unit comprises main control chip; This main control chip is provided with input end (ANO); This input end (ANO) is connected with the TPS socket, and this main control chip is provided with the display end group, and this display end group is connected with LCD display.
Main control chip is provided with first display end, second display end, the 3rd display end, the 4th display end, and said first display end, second display end, the 3rd display end, the 4th display end are connected on the same LCD display.
Said TPS socket is three needle sockets, and first stitch of this TPS socket connects said main control chip, the second stitch ground connection, and the 3rd stitch meets positive supply Vcc.
Effect of the present invention is: a kind of easy to operate TPS pick-up unit and detection method thereof: be to be basis for estimation with the throttle signal, the air throttle pick-up unit that adds arbitration functions can be gone into factory and the function of going into factory's detection, entrucking detection and localization, the current aperture of demonstration and magnitude of voltage by the Rapid Realization TPS.
Can show the throttle position voltage signal, and give tacit consent to the corner/voltage ratio of this model, show corner; And with the highest minimum contrast of acquiescence, have problem then to report to the police, when going into factory's detecting operation; After the operator only need insert detector; End position is turned round by reference position in the axle center of twisting sensor, and it is qualified that detector just can judge whether automatically.
The detection of the TPS relative position during to entrucking is defined through detecting its voltage.Whether detector will point out current location suitable, should clockwise or be rotated counterclockwise how many degree.
Description of drawings
Fig. 1 is the circuit diagram of TPS pick-up unit;
Fig. 2 is a TPS Static Detection process flow diagram;
Fig. 3 is a TPS detection of dynamic process flow diagram.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further:
As shown in Figure 1, a kind of TPS pick-up unit comprises main control chip U1; This main control chip U1 is provided with input end ANO; This input end ANO is connected with TPS socket J1, and this main control chip U1 is provided with the display end group, and this display end group is connected with LCD display.
The model of main control chip U1 is P16F87.
Said main control chip U1 is provided with the first display end LCD1, the second display end LCD2, the 3rd display end LCD3, the 4th display end LCD4, and the said first display end LCD1, the second display end LCD2, the 3rd display end LCD3, the 4th display end LCD4 are connected on the same LCD display.
Said sensor socket J1 is three needle sockets, and first stitch of this sensor socket J1 meets said main control chip U1, the first stitch ground connection, and first stitch meets positive supply Vcc.
The detection method of said TPS pick-up unit, adopt following steps:
Form by TPS Static Detection flow process and TPS detection of dynamic flow process.
As shown in Figure 2, wherein sensor Static Detection flow process adopts following steps:
The Quality Detection flow process of sensor before entrucking,
The unloaded TPS that will advance factory's detection links to each other with first stitch of sensor socket J1;
Main control chip U1 reads the throttle position signal of TPS;
The minimum voltage value of main control chip U1 record throttle position signal;
Main control chip U1 judges that whether this minimum voltage value is less than unloaded reference voltage level; If minimum voltage value is more than or equal to unloaded reference voltage level; Main control chip U1 then shows high-voltage value through LCD display, and turns back to the step of the minimum voltage value of said main control chip U1 record throttle position signal;
Show high-voltage value when unloaded, can judge that then current TPS has fault, can directly change next TPS.
If minimum voltage value is less than unloaded reference voltage level;
The desirable 0.2V of unloaded reference voltage level, 0.15V, 0.16V.
Then manual work clockwise rotates the TPS core; The rotation of TPS core can improve the magnitude of voltage of throttle position signal.
Main control chip U1 judges whether the magnitude of voltage of throttle position signal raises;
If magnitude of voltage does not raise, explain also not begin to rotate the TPS core that main control chip U1 returns and continues to judge whether the magnitude of voltage of throttle position signal raises;
The Static Detection flow process mainly is whether the detection range of detection TPS is qualified; Whether the minimum value that at first detects range is less than 0.2V; The magnitude of voltage that 0-0.1V is arranged after TPS generally powers on, can unloaded reference voltage level be set 0.2V is basis for estimation.Can the permissible error scope that be fully loaded with reference voltage be set in 4.4V to 4.6V.
If the model of TPS changes different, its output valve is not 4.5V, if be 5V, 6V, 3V etc., then corresponding permissible error scope be set at 4.9V to 5.1V, 5.9V to 6.1V, 2.9V to 3.1V, and the like.
After rotating the TPS core, the TPS magnitude of voltage is changed to maximal value by minimum value, judges that whether qualified whether maximal value be detection TPS another standard at 4.4V to 4.6V.
But it is easy when rotating the TPS core; Be easy to generate and beat,, need carry out continuous several times to the throttle position signal voltage max and judge for avoiding eliminating the influence of undesired signal; As n1 and n2 are set at 20; Then will carry out continual 20 times and judge, have only judge unanimity 20 times after, just can draw reliable result.
The number of times of n1 and n2 can be adjusted respectively as required, as 10 times, 15 times, 30 times.
Therefore, can say also that the starting point of judging for 20 times is arranged on makes initiation parameter time=0, this step of Err=0.
Also can the starting point of judging for 20 times be arranged on whether person's one step in the permissible error scope that is fully loaded with reference voltage of throttle position signal voltage max that main control chip U1 judges TPS output.
Repeatedly judge the reliability and stability of the automatic measuring ability that has guaranteed the TPS pick-up unit.
If magnitude of voltage raises, then make initiation parameter time=0, Err=0;
Main control chip U1 judges that the throttle position signal voltage max of TPS output is whether in the permissible error scope of fully loaded reference voltage;
If not in the permissible error scope, then make Err=Err+1, whether judge Err again greater than n1 time, if Err is not more than n1 time, then returns and continue to judge the whether step in the permissible error scope that is fully loaded with reference voltage of throttle position signal voltage max; If Err greater than n1 time, then shows fault by LCD display, and return the step that said main control chip U1 writes down the minimum voltage value of throttle position signal;
If in the permissible error scope, the 1ms that then delays time makes time=time+1;
Whether judge time greater than n2 time,, and return and continue to judge the whether step in the permissible error scope that is fully loaded with reference voltage of throttle position signal voltage max if time is not more than n2 time;
If time is greater than n2 time, then main control chip U1 judges that TPS is qualified, and LCD display shows to detect to be accomplished;
After taking off TPS, TPS pick-up unit test side is unsettled;
Main control chip U1 will judge whether current magnitude of voltage is less than or equal to said minimum voltage value;
If current magnitude of voltage is not less than minimum voltage value, show that then TPS does not break away from the TPS pick-up unit fully.
Main control chip U1 will return and continue to judge whether current magnitude of voltage is less than or equal to said minimum voltage value;
If current magnitude of voltage, then returns the step of the minimum voltage value of said main control chip U1 record throttle position signal less than minimum voltage value.
As shown in Figure 3, said TPS detection of dynamic flow process is:
TPS is installed to the enterprising luggage car monitoring of air throttle;
After the entrucking, the TPS core can turn an angle, but whether the angle of rotating is qualified, then need detect.
The angle that guarantees to rotate is between the upper and lower limit of set angle.
Can be with the identification through current magnitude of voltage, adjusting TPS core guarantees that current magnitude of voltage in the setting voltage interval, just can confirm installation qualification.
Main control chip U1 reads the throttle position signal of TPS;
Main control chip U1 then shows the current magnitude of voltage of TPS through LCD display;
Main control chip U1 judges that whether current magnitude of voltage is less than the interval lower limit AD1 of setting voltage;
If current magnitude of voltage is less than the interval lower limit AD1 of setting voltage;
Manual work rotates counterclockwise the TPS core;
LCD display shows that the TPS core rotates counterclockwise;
The pairing air throttle anglec of rotation of current magnitude of voltage of LCD display and current magnitude of voltage:
(AD1-TPS)/the 0.05+1=air throttle is rotated counterclockwise angle;
According to actual needs, lower limit AD1 desirable 0.4 or 0.5 or 0.55 waits other preset values.
TPS is detected current magnitude of voltage.
Turn back to the step that said main control chip U1 reads the throttle position signal of TPS;
If current magnitude of voltage is not less than the interval lower limit AD1 of setting voltage, then main control chip U1 judges that whether current magnitude of voltage is greater than the interval higher limit AD2 of setting voltage;
Manual work clockwise rotates the TPS core;
LCD display shows that the TPS core clockwise rotates;
The pairing air throttle anglec of rotation of current magnitude of voltage of LCD display and current magnitude of voltage:
(TPS-AD2)/0.05+1=air throttle dextrorotation gyration;
According to actual needs, higher limit AD2 desirable 0.45 or 0.5 or 0.55 or 0.6 waits other preset values.
Turn back to the step that said main control chip U1 reads the throttle position signal of TPS;
If current magnitude of voltage is not more than the interval higher limit AD2 of setting voltage, then LCD display shows that entrucking is qualified.
Claims (3)
1. the detection method of a TPS pick-up unit is characterized in that, form by TPS Static Detection flow process and TPS detection of dynamic flow process,
Wherein sensor Static Detection flow process adopts following steps:
The unloaded TPS that will advance factory's detection links to each other with first stitch of TPS socket (J1);
The main control chip of TPS pick-up unit (U1) reads the throttle position signal of TPS;
The minimum voltage value of main control chip (U1) record throttle position signal;
Main control chip (U1) judges that whether this minimum voltage value is less than unloaded reference voltage level; If minimum voltage value is more than or equal to unloaded reference voltage level; Main control chip (U1) then shows high-voltage value through LCD display; Judge that this TPS has fault, and turn back to the step of the minimum voltage value of said main control chip (U1) record throttle position signal;
If minimum voltage value less than unloaded reference voltage level, then clockwise rotates the TPS core;
Main control chip (U1) judges whether the magnitude of voltage of throttle position signal raises;
If magnitude of voltage does not raise, then return and continue to judge whether the magnitude of voltage of throttle position signal raises;
If magnitude of voltage raises, then make initiation parameter time=0, Err=0;
Main control chip (U1) judges that the throttle position signal voltage max of TPS output is whether in the permissible error scope of fully loaded reference voltage;
If not in the permissible error scope, then make Err=Err+1, whether judge Err again greater than n1 time, if Err is not more than n1 time, then returns and continue to judge the whether step in the permissible error scope that is fully loaded with reference voltage of throttle position signal voltage max; If Err greater than n1 time, then shows fault by LCD display, and return the step that said main control chip (U1) writes down the minimum voltage value of throttle position signal;
If in the permissible error scope, the 1ms that then delays time makes time=time+1;
Whether judge time greater than n2 time,, and return and continue to judge the whether step in the permissible error scope that is fully loaded with reference voltage of throttle position signal voltage max if time is not more than n2 time;
If time is greater than n2 time, then main control chip (U1) judges that TPS is qualified, and LCD display shows to detect to be accomplished;
Take off TPS;
Main control chip (U1) judges whether current magnitude of voltage is less than or equal to said minimum voltage value;
If current magnitude of voltage is not less than minimum voltage value, then returns and continue to judge whether current magnitude of voltage is less than or equal to said minimum voltage value;
If current magnitude of voltage, then returns the step of the minimum voltage value of said main control chip (U1) record throttle position signal less than minimum voltage value;
Said TPS detection of dynamic flow process is:
TPS is installed to the enterprising luggage car monitoring of air throttle;
Main control chip (U1) reads the throttle position signal of TPS;
Main control chip (U1) then shows the current magnitude of voltage of TPS through LCD display;
Main control chip (U1) judges that whether current magnitude of voltage is less than the interval lower limit AD1 of setting voltage;
If current magnitude of voltage is less than the interval lower limit AD1 of setting voltage;
Manual work rotates counterclockwise the TPS core;
LCD display shows that the TPS core rotates counterclockwise;
LCD display shows the current magnitude of voltage and the pairing air throttle anglec of rotation of current magnitude of voltage:
(0.55-TPS)/and the 0.05+1=air throttle is rotated counterclockwise angle, and wherein TPS representes current magnitude of voltage;
Turn back to the step that said main control chip (U1) reads the throttle position signal of TPS;
If current magnitude of voltage is not less than the interval lower limit of setting voltage, then main control chip (U1) judges that whether current magnitude of voltage is greater than the interval higher limit AD2 of setting voltage;
Manual work clockwise rotates the TPS core;
LCD display shows that the TPS core clockwise rotates;
LCD display shows the current magnitude of voltage and the pairing air throttle anglec of rotation of current magnitude of voltage:
(TPS-0.65)/and 0.05+1=air throttle dextrorotation gyration, wherein TPS representes current magnitude of voltage;
Turn back to the step that said main control chip (U1) reads the throttle position signal of TPS;
If current magnitude of voltage is not more than the interval higher limit of setting voltage, then LCD display shows that entrucking is qualified.
2. according to the detection method of the said TPS pick-up unit of claim 1: said TPS pick-up unit comprises main control chip (U1); This main control chip (U1) is provided with input end (ANO); This input end (ANO) is connected with TPS socket (J1); This main control chip (U1) is provided with the display end group, and this display end group is connected with LCD display.
3. according to the detection method of the said TPS pick-up unit of claim 1: said TPS socket (J1) is three needle sockets; First stitch of this TPS socket (J1) connects said main control chip (U1); The second stitch ground connection, the 3rd stitch meets positive supply Vcc.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105667403A CN102121834B (en) | 2010-11-30 | 2010-11-30 | Detection method for throttle valve position sensor detection device |
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| CN2010105667403A CN102121834B (en) | 2010-11-30 | 2010-11-30 | Detection method for throttle valve position sensor detection device |
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| CN102121834A CN102121834A (en) | 2011-07-13 |
| CN102121834B true CN102121834B (en) | 2012-07-04 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102013209624A1 (en) * | 2013-05-23 | 2014-11-27 | Robert Bosch Gmbh | Method and control unit for calibrating a drive of a throttle valve of an internal combustion engine in a motor vehicle |
| CN106218553B (en) * | 2016-08-03 | 2018-09-11 | 北京新能源汽车股份有限公司 | Accelerator pedal sensor minimum voltage learning method, device and entire car controller |
| CN113203430B (en) * | 2021-03-29 | 2022-08-26 | 深圳市华怡丰科技有限公司 | Photoelectric sensor calibration method and system, photoelectric sensor and readable storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6112724A (en) * | 1998-12-08 | 2000-09-05 | Ford Global Technologies, Inc. | Throttle position filtering method |
| CN200962126Y (en) * | 2006-09-06 | 2007-10-17 | 浙江博德汽车电子股份有限公司 | A detection device for gas control gate location sensor |
| CN101629526A (en) * | 2008-07-14 | 2010-01-20 | 华夏龙晖（北京）汽车电子科技有限公司 | Method for diagnosing and processing fault of throttle position sensor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100305843B1 (en) * | 1995-12-23 | 2001-12-17 | 이계안 | Method for diagnosing trouble of throttle position sensor |
| JP2001289066A (en) * | 2000-04-04 | 2001-10-19 | Isuzu Motors Ltd | Throttle position diagnostic device in four-wheel drive control device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6112724A (en) * | 1998-12-08 | 2000-09-05 | Ford Global Technologies, Inc. | Throttle position filtering method |
| CN200962126Y (en) * | 2006-09-06 | 2007-10-17 | 浙江博德汽车电子股份有限公司 | A detection device for gas control gate location sensor |
| CN101629526A (en) * | 2008-07-14 | 2010-01-20 | 华夏龙晖（北京）汽车电子科技有限公司 | Method for diagnosing and processing fault of throttle position sensor |
Non-Patent Citations (2)
| Title |
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| JP特开2001－289066A 2001.10.19 |
| KR10－0305843B1 2001.12.17 |
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