CN201885747U - Detecting device for throttling valve position sensors - Google Patents
Detecting device for throttling valve position sensors Download PDFInfo
- Publication number
- CN201885747U CN201885747U CN2010206349988U CN201020634998U CN201885747U CN 201885747 U CN201885747 U CN 201885747U CN 2010206349988 U CN2010206349988 U CN 2010206349988U CN 201020634998 U CN201020634998 U CN 201020634998U CN 201885747 U CN201885747 U CN 201885747U
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- throttle position
- position sensor
- main control
- control chip
- voltage
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Abstract
The utility model discloses a detecting device for throttling valve position sensors, which comprises a main control chip. The main control chip is provided with a first display terminal, a second display terminal, a third display terminal and a fourth display terminal which are connected onto the same LCD (liquid crystal display). The detecting device is characterized in that the main control chip is further provided with an input end connected with a throttling valve position sensor socket. The detecting device has the advantages that the throttling valve detecting device adopts throttling valve signals as judgment basis, has an additional judgment function, can realize factory detection of the throttling valve position sensors, loading positioning detection, and a function of display of current opening and voltage values.
Description
Technical field
The utility model belongs to a kind of throttle position sensor detection technique, the throttle position sensor pick-up unit that especially a kind of motorcycle is used.
Background technology
Throttle position sensor is used to monitor the size of throttle opening value, and the throttle opening value is sent to ECU, ECU binding engine rotating speed, information such as air-fuel ratio, the aperture of control air throttle.Work under the air-fuel ratio state of the best to guarantee engine.
Therefore, the reliability of throttle position sensor, the accuracy of amount of supplied air when being directly connected to engine operation.
Detection method to throttle position sensor 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 throttle position sensor 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.
The utility model content
Problem to be solved in the utility model is to provide the throttle position sensor pick-up unit, can the fast detecting valve position sensor whether qualified, and can realize fast that throttle position sensor goes into factory's detection, entrucking detection and localization, shows current aperture and magnitude of voltage.
For achieving the above object, the utility model provides a kind of throttle position sensor pick-up unit, comprise main control chip, this main control chip is provided with first display end, second display end, the 3rd display end, the 4th display end, described first display end, second display end, the 3rd display end, the 4th display end are connected on the same LCD display, and its key is:
Described main control chip also is provided with input end, and this input end is connected with the throttle position sensor socket.
Described throttle position sensor socket is three needle sockets, and first stitch of this sensor socket connects described main control chip, the first stitch ground connection, and first stitch meets positive supply Vcc.
The detection method of described throttle position sensor pick-up unit,
Form by throttle position sensor Static Detection flow process and throttle position sensor 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 throttle position sensor that to advance factory's detection links to each other with first stitch of sensor socket;
Main control chip reads the throttle position signal of throttle position sensor;
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 by LCD display, and turns back to the step of the minimum voltage value of described main control chip record throttle position signal;
Show high-voltage value when unloaded, can judge that then current throttle position sensor has fault, can directly change next throttle position sensor.
If minimum voltage value is less than unloaded reference voltage level;
Then clockwise rotate the throttle position sensor 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 throttle position sensor 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 throttle position sensor generally powers on, unloaded reference voltage level can be set 0.2V is basis for estimation.The permissible error scope that is fully loaded with reference voltage can be set in 4.4V to 4.6V.
After rotating the throttle position sensor core, the throttle position sensor magnitude of voltage is changed to maximal value by minimum value, judges that whether qualified whether maximal value be detection throttle position sensor another standard at 4.4V to 4.6V.
But it is easy when rotating the throttle position sensor core, be easy to generate and beat, for avoiding eliminating the influence of undesired signal, need carry out continuous several times to the throttle position signal voltage max judges, 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 the starting point of judging for 20 times can 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 throttle position sensor output.
Repeatedly judge the reliability and stability of the automatic measuring ability that has guaranteed the throttle position sensor 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 throttle position sensor 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 described 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 throttle position sensor is qualified, and LCD display shows to detect to be finished;
Take off throttle position sensor;
Main control chip judges whether current magnitude of voltage is less than or equal to described 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 described minimum voltage value;
If current magnitude of voltage, then returns the step of the minimum voltage value of described main control chip record throttle position signal less than minimum voltage value;
Described throttle position sensor detection of dynamic flow process is:
Throttle position sensor is installed to the enterprising luggage car monitoring of air throttle;
After the entrucking, the throttle position sensor core can turn an angle, but whether the angle of rotating is qualified, then needs to detect.
The angle that guarantees to rotate is between the upper and lower limit of set angle.
Can be with the identification by current magnitude of voltage, adjusting throttle position sensor core guarantees that current magnitude of voltage in the setting voltage interval, just can determine installation qualification.
Main control chip reads the throttle position signal of throttle position sensor;
Main control chip then shows the current magnitude of voltage of throttle position sensor by LCD display;
Main control chip judges that current magnitude of voltage is whether less than the lower limit AD1 in setting voltage interval;
If current magnitude of voltage is less than the lower limit AD1 in setting voltage interval;
LCD display shows that the throttle position sensor 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 described main control chip reads the throttle position signal of throttle position sensor;
If current magnitude of voltage is not less than the lower limit AD1 in setting voltage interval, then main control chip judges that current magnitude of voltage is whether greater than the higher limit AD2 in setting voltage interval;
LCD display shows that the throttle position sensor 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 described main control chip reads the throttle position signal of throttle position sensor;
If current magnitude of voltage is not more than the higher limit AD2 in setting voltage interval, then LCD display shows that entrucking is qualified.
Described throttle position sensor pick-up unit comprises main control chip, and this main control chip is provided with input end, and this input end is connected with the throttle position sensor 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 described first display end, second display end, the 3rd display end, the 4th display end are connected on the same LCD display.
Described throttle position sensor socket is three needle sockets, and first stitch of this throttle position sensor socket connects described main control chip, the second stitch ground connection, and the 3rd stitch meets positive supply Vcc.
Effect of the present utility model is: a kind of easy to operate throttle position sensor 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 realize fast that throttle position sensor goes into factory and go into the function of factory's detections, entrucking detection and localization, the current aperture of demonstration and magnitude of voltage.
Can show the throttle position voltage signal, and give tacit consent to the corner/voltage ratio of this model, show corner, and and 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 throttle position sensor relative position during to entrucking is defined by 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 throttle position sensor pick-up unit;
Fig. 2 is a throttle position sensor Static Detection process flow diagram;
Fig. 3 is a throttle position sensor detection of dynamic process flow diagram.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
As shown in Figure 1, a kind of throttle position sensor 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 throttle position sensor 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.
Described 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 described 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.
Described sensor socket J1 is three needle sockets, and first stitch of this sensor socket J1 meets described main control chip U1, the first stitch ground connection, and first stitch meets positive supply Vcc.
The detection method of described throttle position sensor pick-up unit, adopt following steps:
Form by throttle position sensor Static Detection flow process and throttle position sensor 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 throttle position sensor that to 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 throttle position sensor;
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 by LCD display, and turns back to the step of the minimum voltage value of described main control chip U1 record throttle position signal;
Show high-voltage value when unloaded, can judge that then current throttle position sensor has fault, can directly change next throttle position sensor.
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 manually clockwise rotate the throttle position sensor core; The rotation of throttle position sensor 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, illustrate also not begin to rotate the throttle position sensor 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 throttle position sensor 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 throttle position sensor generally powers on, unloaded reference voltage level can be set 0.2V is basis for estimation.The permissible error scope that is fully loaded with reference voltage can be set in 4.4V to 4.6V.
If the model of throttle position sensor 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 is to 3.1V, and the like.
After rotating the throttle position sensor core, the throttle position sensor magnitude of voltage is changed to maximal value by minimum value, judges that whether qualified whether maximal value be detection throttle position sensor another standard at 4.4V to 4.6V.
But it is easy when rotating the throttle position sensor core, be easy to generate and beat, for avoiding eliminating the influence of undesired signal, need carry out continuous several times to the throttle position signal voltage max judges, 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 the starting point of judging for 20 times can 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 throttle position sensor output.
Repeatedly judge the reliability and stability of the automatic measuring ability that has guaranteed the throttle position sensor 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 throttle position sensor 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 described 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 throttle position sensor is qualified, and LCD display shows to detect to be finished;
After taking off throttle position sensor, throttle position sensor pick-up unit test side is unsettled;
Main control chip U1 will judge whether current magnitude of voltage is less than or equal to described minimum voltage value;
If current magnitude of voltage is not less than minimum voltage value, show that then throttle position sensor does not break away from fully with the throttle position sensor pick-up unit.
Main control chip U1 will return and continue to judge whether current magnitude of voltage is less than or equal to described minimum voltage value;
If current magnitude of voltage, then returns the step of the minimum voltage value of described main control chip U1 record throttle position signal less than minimum voltage value.
As shown in Figure 3, described throttle position sensor detection of dynamic flow process is:
Throttle position sensor is installed to the enterprising luggage car monitoring of air throttle;
After the entrucking, the throttle position sensor core can turn an angle, but whether the angle of rotating is qualified, then needs to detect.
The angle that guarantees to rotate is between the upper and lower limit of set angle.
Can be with the identification by current magnitude of voltage, adjusting throttle position sensor core guarantees that current magnitude of voltage in the setting voltage interval, just can determine installation qualification.
Main control chip U1 reads the throttle position signal of throttle position sensor;
Main control chip U1 then shows the current magnitude of voltage of throttle position sensor by LCD display;
Main control chip U1 judges that current magnitude of voltage is whether less than the lower limit AD1 in setting voltage interval;
If current magnitude of voltage is less than the lower limit AD1 in setting voltage interval;
Manually rotate counterclockwise the throttle position sensor core;
LCD display shows that the throttle position sensor 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 described main control chip U1 reads the throttle position signal of throttle position sensor;
If current magnitude of voltage is not less than the lower limit AD1 in setting voltage interval, then main control chip U1 judges that current magnitude of voltage is whether greater than the higher limit AD2 in setting voltage interval;
Manually clockwise rotate the throttle position sensor core;
LCD display shows that the throttle position sensor 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 described main control chip U1 reads the throttle position signal of throttle position sensor;
If current magnitude of voltage is not more than the higher limit AD2 in setting voltage interval, then LCD display shows that entrucking is qualified.
Claims (2)
1. throttle position sensor pick-up unit, comprise main control chip (U1), this main control chip (U1) is provided with first display end (LCD1), second display end (LCD2), the 3rd display end (LCD3), the 4th display end (LCD4), described first display end (LCD1), second display end (LCD2), the 3rd display end (LCD3), the 4th display end (LCD4) are connected on the same LCD display, it is characterized in that:
Described main control chip (U1) also is provided with input end (ANO), and this input end (ANO) is connected with throttle position sensor socket (J1).
2. throttle position sensor pick-up unit according to claim 1, it is characterized in that described throttle position sensor socket (J1) is three needle sockets, first stitch of this sensor socket (J1) connects described main control chip (U1), the first stitch ground connection, first stitch meets positive supply Vcc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206349988U CN201885747U (en) | 2010-11-30 | 2010-11-30 | Detecting device for throttling valve position sensors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206349988U CN201885747U (en) | 2010-11-30 | 2010-11-30 | Detecting device for throttling valve position sensors |
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| Publication Number | Publication Date |
|---|---|
| CN201885747U true CN201885747U (en) | 2011-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206349988U Expired - Lifetime CN201885747U (en) | 2010-11-30 | 2010-11-30 | Detecting device for throttling valve position sensors |
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| CN (1) | CN201885747U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104340200A (en) * | 2013-08-02 | 2015-02-11 | 上海汽车集团股份有限公司 | Diagnostic method of fault of brake pedal position sensor |
| CN107883860A (en) * | 2017-12-29 | 2018-04-06 | 无锡隆盛科技股份有限公司 | Electronic throttle full close position maintains condition checkout gear and method |
-
2010
- 2010-11-30 CN CN2010206349988U patent/CN201885747U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104340200A (en) * | 2013-08-02 | 2015-02-11 | 上海汽车集团股份有限公司 | Diagnostic method of fault of brake pedal position sensor |
| CN104340200B (en) * | 2013-08-02 | 2016-12-28 | 上海汽车集团股份有限公司 | A kind of diagnostic method of brake pedal position sensor fault |
| CN107883860A (en) * | 2017-12-29 | 2018-04-06 | 无锡隆盛科技股份有限公司 | Electronic throttle full close position maintains condition checkout gear and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110629 |
|
| CX01 | Expiry of patent term |