CN101148965A - Vehicle window drive clamping-proof control system and control method thereof - Google Patents
Vehicle window drive clamping-proof control system and control method thereof Download PDFInfo
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Abstract
The present invention is squeeze preventing automobile window driving system and control method, and relates to squeeze preventing automobile window driving technology. The system includes one microprocessor circuit, one intelligent feedback power chip, one multiway switch detection interface circuit, one window top touch switch, one test switch, one window bottom touch switch, one window ascent switch and one window descent switch connected together. The control method includes the following steps: for the microprocessor circuit to detect braking current value for N times and normal resistance current value for N times and to store the calculated threshold value in a flash memory; to compare with the reference current value in the flash memory, and to rotate the motor inversely to execute the squeeze preventing function if the calculated threshold value is greater. The present invention has high precision and capacity of updating the reference current value.
Description
Technical Field
The invention relates to the technical field of automobile window driving anti-pinch control.
Background
The current car window drive anti-pinch device mainly divide into: infrared sensing type and current feedback type, which cannot be popularized and applied due to high cost; although the current feedback type is low in cost, the anti-pinch precision is too low, a large amount of test work needs to be carried out to obtain the reference current threshold value Imax, after each car window is installed, the resistance borne by each car window in the rotating process is different, and the fixed reference current threshold value Imax inevitably generates errors for car window environments with larger resistance, so that the car windows cannot be closed due to wrong judgment. The resistance is increased or decreased along with the use of a car window, the aging of a device and the continuous change of the resistance borne by a car window motor in the rotating process, and the fixed reference current threshold value Imax becomes inaccurate along with the use of a system, so that the car window cannot be used finally.
Disclosure of Invention
The invention aims to overcome the defects that the existing infrared sensing type automobile window driving anti-pinch device cannot be popularized and applied due to too high cost and the current feedback type automobile window driving anti-pinch device needs to carry out a large amount of test work when a reference current threshold value Imax is obtained; the problem that the fixed reference current threshold value Imax becomes inaccurate along with the use of a system and finally cannot be used due to the fact that the resistance becomes larger or smaller along with the use of a vehicle window, the aging of a device and the continuous change of the resistance borne by a vehicle window motor in the rotating process is solved. Further provides a vehicle window driving anti-pinch control system and a control method thereof.
The system of the invention is composed of a current feedback intelligent power chip 1, a micro-control processor circuit 2, a multi-way switch detection interface circuit 3, a car window top contact switch 4, a test switch 5, a car window bottom contact switch 6, a car window ascending switch 7 and a car window descending switch 8;
the forward rotation control input end of the current feedback intelligent power chip 1 is connected with the forward rotation control output end of the micro-control processor circuit 2, the reverse rotation control input end of the current feedback intelligent power chip 1 is connected with the reverse rotation control output end of the micro-control processor circuit 2, the motor current signal output end of the current feedback intelligent power chip 1 is connected with the motor current signal input end of the micro-control processor circuit 2, the switching value data input bus end of the micro-control processor circuit 2 is connected with the switching value data output bus end of the multi-way switch detection interface circuit 3, the first switch interface end of the multi-way switch detection interface circuit 3 is connected with the output end of the window top contact switch 4, the second switch interface end of the multi-way switch detection interface circuit 3 is connected with the output end of the test switch 5, the third switch interface end of the multi-way switch detection interface circuit 3 is connected with the output end of the window bottom contact switch 6, the fourth switch interface end of the multi-way switch detection interface circuit 3 is connected with the output end of the window rising switch 7, and the fifth switch interface end of the multi-way switch detection interface circuit 3 is connected with the output end of the window falling switch 8.
The anti-pinch control method for the vehicle window driving comprises the following steps:
step one, powering up and starting the whole system;
step two, the micro-control processor circuit 2 judges whether the test switch 5 is opened or not through the multi-way switch detection interface circuit 3, if so, the micro-control processor enters a test state, namely, the step three is operated, if not, the step four is directly operated;
step three, the ascending and descending of the car window are controlled through a car window ascending switch 7 and a car window descending switch 8, and the micro-control processor circuit 2 measures the electric power through a car window top contact switch 4 and a car window bottom contact switch 6The braking current value of the machine 9 is calculated for N times, and the average smooth value-Imax _ avg of the N times is calculated, wherein the calculation formula is as follows:and meanwhile, measuring the normal resistance current value InomN times of the motor 9 when the window normally ascends, and calculating the average smooth value-Inom _ avg of the N times, wherein the calculation formula is as follows:
calculating a current threshold value by Imax _ avg and Inom _ avg, wherein the calculation formula is as follows:
storing the calculated current threshold value into a Flash storage unit in the micro-control processor circuit 2 as a reference current threshold value, and operating the ninth step;
step four, the micro-control processor circuit 2 judges whether the window ascending switch 7 or the window descending switch 8 is connected, if the judgment result is that the window ascending switch 7 or the window descending switch 8 is not connected, the micro-control processor circuit 2 continues to stand by, and the step nine is operated;
judging whether the vehicle window descending switch 8 is on, judging whether the vehicle window bottom contact switch 6 is on, continuing the standby of the micro-control processor circuit 2 if the vehicle window bottom contact switch 6 is on, and operating step nine, judging that the vehicle window bottom contact switch 6 is off, controlling the motor 9 to reversely rotate by the micro-control processor circuit 2 through the current feedback intelligent power chip 1 to descend the vehicle window, and operating step nine;
judging whether the window ascending switch 7 is switched on, judging whether the window top contact switch 4 is switched on, if so, continuing to stand by and operating the micro-control processor circuit 2, and if not, controlling the motor 9 to rotate forwards through the current feedback intelligent power chip 1 by the micro-control processor circuit 2 to enable the window to ascend, simultaneously reading in current feedback value data of the current feedback intelligent power chip 1 by the micro-control processor circuit 2, comparing the current feedback value data with a reference current threshold value in the current flash, and executing an anti-pinch function if the feedback current is greater than the reference current threshold value in the flash, namely, the motor 9 rotates backwards, and operating the step six;
step five, delaying the micro-control processor circuit 2 for 10ms, measuring the brake current value Imax of the motor 9, and operating the step seven, wherein max _ test _ flag = 1;
step six, the micro-control processor circuit 2 measures the normal resistance current value Inom-when the vehicle window rises at fixed time, and calculates the average value Inom _ avg, and the calculation formula is as follows: average current
Operating the step seven, wherein the nom _ test _ flag = 1;
step seven, micro-control processor electricityWay 2 is based on max _ test _ flag =1&nom _ test _ flag =1, and Inom and Imax calculate the current threshold current value, and the calculation formula is: I.C. A clip ≈I normal +(I max -I normal )/3；
Step eight, the micro-control processor circuit 2 replaces the original reference current threshold value after performing weighted average on the original reference current threshold value and the current threshold value in the Flash storage unit, and the calculation formula is as follows:
step nine, returning to the operation step two.
The anti-pinch device has high anti-pinch precision, can obtain the reference current threshold value Imax in a short time in a small amount of tests, and can automatically adjust and update the reference current threshold value Imax along with the use of the car window, the aging of devices and the continuous change of the resistance borne by a car window motor in the rotating process, so that the anti-pinch device can work stably for a long time. It also has the advantages of low cost, simple structure and convenient use.
Drawings
Fig. 1 is a schematic diagram of the overall circuit structure of the present invention.
Detailed Description
The first specific implementation way is as follows: the embodiment is described with reference to fig. 1, and the embodiment is composed of a current feedback intelligent power chip 1, a micro-control processor circuit 2, a multi-way switch detection interface circuit 3, a window top contact switch 4, a test switch 5, a window bottom contact switch 6, a window ascending switch 7 and a window descending switch 8;
the forward rotation control input end of the current feedback intelligent power chip 1 is connected with the forward rotation control output end of the micro-control processor circuit 2, the reverse rotation control input end of the current feedback intelligent power chip 1 is connected with the reverse rotation control output end of the micro-control processor circuit 2, the motor current signal output end of the current feedback intelligent power chip 1 is connected with the motor current signal input end of the micro-control processor circuit 2, the switching value data input bus end of the micro-control processor circuit 2 is connected with the switching value data output bus end of the multi-way switch detection interface circuit 3, the first switch interface end of the multi-way switch detection interface circuit 3 is connected with the output end of the window top contact switch 4, the second switch interface end of the multi-way switch detection interface circuit 3 is connected with the output end of the test switch 5, the third switch interface end of the multi-way switch detection interface circuit 3 is connected with the output end of the window bottom contact switch 6, the fourth switch interface end of the multi-way switch detection interface circuit 3 is connected with the output end of the window rising switch 7, and the fifth switch interface end of the multi-way switch detection interface circuit 3 is connected with the output end of the window falling switch 8. The forward rotation driving output end of the current feedback intelligent power chip 1 is connected with the forward rotation driving input end of the motor 9, the reverse rotation driving output end of the current feedback intelligent power chip 1 is connected with the reverse rotation driving input end of the motor 9, and the grounding end of the motor 9 is grounded.
The model of the current feedback intelligent power chip 1 is MC33887, the model of the micro-control processor circuit 2 is MC68HC908GZ16, and the model of the multi-way switch detection interface circuit 3 is MC33884.
The anti-pinch control method for the vehicle window driving comprises the following steps:
step one, powering up and starting the whole system;
step two, the micro-control processor circuit 2 judges whether the test switch 5 is opened or not through the multi-way switch detection interface circuit 3, if so, the micro-control processor enters a test state, namely, the step three is operated, if not, the step four is directly operated;
step three, the ascending and descending of the car window are controlled through a car window ascending switch 7 and a car window descending switch 8, the micro-control processor circuit 2 measures the braking current value of the electric motor 9 for N times through a car window top contact switch 4 and a car window bottom contact switch 6, and calculates the average smooth value of the N times, namely Imax _ avg, and the calculation formula is as follows:
and meanwhile, measuring the normal resistance current value InomN times of the motor 9 when the window normally ascends, and calculating the average smooth value-Inom _ avg of the N times, wherein the calculation formula is as follows:
calculating a current threshold value by Imax _ avg and Inom _ avg, wherein the calculation formula is as follows:
storing the calculated current threshold value into a Flash storage unit in the micro-control processor circuit 2 as a reference current threshold value, and operating the ninth step;
step four, the micro-control processor circuit 2 judges whether the window ascending switch 7 or the window descending switch 8 is connected, if the judgment result is that the window ascending switch 7 or the window descending switch 8 is not connected, the micro-control processor circuit 2 continues to stand by, and the step nine is operated;
judging whether the vehicle window descending switch 8 is on, judging whether the vehicle window bottom contact switch 6 is on, continuing the standby of the micro-control processor circuit 2 if the vehicle window bottom contact switch 6 is on, and operating step nine, judging that the vehicle window bottom contact switch 6 is off, controlling the motor 9 to reversely rotate by the micro-control processor circuit 2 through the current feedback intelligent power chip 1 to descend the vehicle window, and operating step nine;
judging whether the window ascending switch 7 is switched on, judging whether the window top contact switch 4 is switched on, if so, continuing to stand by and operating the micro-control processor circuit 2, and if so, judging that the window top contact switch 4 is switched off, controlling the motor 9 to rotate forwards through the current feedback intelligent power chip 1 by the micro-control processor circuit 2 to enable the window to ascend, simultaneously reading current feedback value data of the current feedback intelligent power chip 1 by the micro-control processor circuit 2, comparing the current feedback value data with a reference current threshold value in the current flash, and executing an anti-pinch function if the feedback current is greater than the reference current threshold value in the flash, namely, reversely rotating the motor 9 and operating the sixth step;
step five, delaying the micro-control processor circuit 2 for 10ms, measuring the brake current value Imax of the motor 9, and operating the step seven, wherein max _ test _ flag = 1;
step six, the micro-control processor circuit 2 measures the normal resistance current value Inom-when the vehicle window rises at fixed time, and calculates the average value Inom _ avg, and the calculation formula is as follows: average current
Operating the step seven, wherein the nom _ test _ flag = 1;
step seven, the micro-control processor circuit 2 according to max _ test _ flag =1&And nom _ test _ flag =1, and Inom and Imax are used for calculating the current threshold current value, wherein the calculation formula is as follows: i is clip ≈I normal +(I max -I normal )/3；
Step eight, the micro-control processor circuit 2 replaces the original reference current threshold value after performing weighted average on the original reference current threshold value and the current threshold value in the Flash storage unit, and the calculation formula is as follows:
step nine, returning to the operation step two.
Claims (2)
1. The car window driving anti-pinch control system consists of a current feedback intelligent power chip (1), a micro-control processor circuit (2), a multi-way switch detection interface circuit (3), a car window top contact switch (4), a test switch (5), a car window bottom contact switch (6), a car window ascending switch (7) and a car window descending switch (8);
the intelligent power detection system is characterized in that a forward rotation control input end of a current feedback intelligent power chip (1) is connected with a forward rotation control output end of a micro-control processor circuit (2), a reverse rotation control input end of the current feedback intelligent power chip (1) is connected with a reverse rotation control output end of the micro-control processor circuit (2), a motor current signal output end of the current feedback intelligent power chip (1) is connected with a motor current signal input end of the micro-control processor circuit (2), a switching value data input bus end of the micro-control processor circuit (2) is connected with a switching value data output bus end of a multi-way switch detection interface circuit (3), a first way switch interface end of the multi-way switch detection interface circuit (3) is connected with an output end of a window top contact switch (4), a second way switch interface end of the multi-way switch detection interface circuit (3) is connected with an output end of a test switch (5), a third way switch interface end of the multi-way switch detection interface circuit (3) is connected with an output end of a window bottom contact switch (6), a fourth way switch interface end of the multi-way switch detection interface circuit (3) is connected with an output end of an up switch (7), and a fifth way switch interface circuit (3) is connected with an output end of a window down switch interface switch (8).
2. The anti-pinch control method for the vehicle window driving is characterized by comprising the following steps:
step one, powering up and starting the whole system;
step two, the micro-control processor circuit (2) judges whether the test switch (5) is opened or not through the multi-way switch detection interface circuit (3), if so, the micro-control processor enters a test state, namely, the step three is operated, if not, the step four is directly operated;
step three, the ascending and descending of the car window are controlled through a car window ascending switch (7) and a car window descending switch (8), and the micro-control processor circuit (2) measures electricity through a car window top contact switch (4) and a car window bottom contact switch (6)The braking current value of the motor (9) is calculated for N times, and the average smooth value-Imax _ avg of the N times is calculated, wherein the calculation formula is as follows:and meanwhile, measuring the normal resistance current value InomN times of the motor (9) when the window normally ascends, and calculating the average smooth value-Inom _ avg of the N times, wherein the calculation formula is as follows:
calculating a current threshold value by Imax _ avg and Inom _ avg, wherein the calculation formula is as follows:
storing the calculated current threshold value into the micro-controllerAnd taking a Flash storage unit in the processor circuit (2) as a reference current threshold value, and operating the ninth step:
step four, the micro-control processor circuit (2) judges whether the window ascending switch (7) or the window descending switch (8) is connected or not, if the judgment result is that the window ascending switch or the window descending switch is not connected, the micro-control processor circuit (2) continues to stand by, and the step nine is operated;
judging whether the vehicle window descending switch (8) is switched on, judging whether the vehicle window bottom contact switch (6) is switched on or not, continuing standby of the micro-control processor circuit (2), operating the step nine, judging whether the vehicle window bottom contact switch (6) is switched off or not, controlling the motor (9) to reversely rotate by the micro-control processor circuit (2) through the current feedback intelligent power chip (1) to descend the vehicle window, and operating the step nine;
judging whether the window ascending switch (7) is connected, judging whether the window top contact switch (4) is connected, if so, continuing to stand by and operating the micro-control processor circuit (2) in the fifth step, judging whether the window top contact switch (4) is disconnected, if so, controlling the motor (9) to rotate forwards through the current feedback intelligent power chip (1) by the micro-control processor circuit (2) to enable the window to ascend, simultaneously reading in current feedback data of the current feedback intelligent power chip (1) by the micro-control processor circuit (2), comparing the current feedback data with a reference current threshold value in the current flash, if the feedback current is greater than the reference current threshold value in the flash, executing an anti-pinch function, namely, the motor (9) rotates reversely, and operating the sixth step;
step five, delaying the micro-control processor circuit (2) for 10ms, measuring the brake current value Imax of the motor (9), and operating the step seven, wherein max _ test _ flag = 1;
step six, the micro-control processor circuit (2) measures the normal resistance current value Inom-when the vehicle window rises at regular time, and calculates the average value Inom _ avg, and the calculation formula is as follows: average currentPerforming nom _ test _ flag =1, and operating the step seven;
step seven, micro-control processingThe device circuit (2) is based on max _ test _ flag =1&nom _ test _ flag =1, and Inom and Imax calculate the current threshold current value, and the calculation formula is: i is clip ≈I normal +(I max -I normal )/3；
Step eight, the micro-control processor circuit (2) replaces the original reference current threshold value after carrying out weighted average on the original reference current threshold value and the current threshold value in the Flash storage unit, and the calculation formula is as follows:
step nine, returning to the operation step two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200710144520XA CN101148965B (en) | 2007-10-30 | 2007-10-30 | Vehicle window drive clamping-proof control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200710144520XA CN101148965B (en) | 2007-10-30 | 2007-10-30 | Vehicle window drive clamping-proof control system |
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| CN101148965A true CN101148965A (en) | 2008-03-26 |
| CN101148965B CN101148965B (en) | 2011-09-14 |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586425A (en) * | 2008-05-19 | 2009-11-25 | 现代自动车株式会社 | Window driving apparatus |
| CN102204051A (en) * | 2008-11-05 | 2011-09-28 | 罗伯特·博世有限公司 | Method and device for activating monitoring by a jamming protection function in an electrical closing system |
| CN102261210A (en) * | 2010-05-29 | 2011-11-30 | 比亚迪股份有限公司 | Anti-pinch control method for vehicle open-close body |
| CN102267357A (en) * | 2010-06-03 | 2011-12-07 | 沈思杰 | Hand protection vehicle window and foot protection vehicle door |
| CN102392576A (en) * | 2011-09-20 | 2012-03-28 | 河南天海科技有限公司 | Intelligent control method for automobile electric window |
| CN102418449A (en) * | 2011-12-27 | 2012-04-18 | 昌辉汽车电气***（安徽）有限公司 | Anti-nip control method for automatically correcting electric window in use |
| CN102317878B (en) * | 2009-02-11 | 2016-02-10 | 大陆汽车有限公司 | Drive motor for exchanging finishing equipment carries out the method and apparatus of pulse width modulation controlled |
| CN107849888A (en) * | 2015-08-06 | 2018-03-27 | 欧姆龙汽车电子株式会社 | Control device for opening/closing member |
| CN109532577A (en) * | 2018-12-24 | 2019-03-29 | 上海科世达-华阳汽车电器有限公司 | A kind of anti-clamping method of automatic seat, device and automatic seat controller |
| CN110074590A (en) * | 2019-03-06 | 2019-08-02 | 锐迈机械科技（吴江）有限公司 | A kind of electronic something or somebody to fall back on device of preventing damage and its control method |
| CN110206437A (en) * | 2019-06-12 | 2019-09-06 | 北京经纬恒润科技有限公司 | The anti-clip control method and device of vehicle body closed system |
| CN110344657A (en) * | 2019-06-26 | 2019-10-18 | 广东汇泰龙科技股份有限公司 | A kind of control method and system of intelligent door lock slip lid finger |
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| CN114274899A (en) * | 2022-01-20 | 2022-04-05 | 吴汉林 | Direct current motor assembly and whole vehicle control system |
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- 2007-10-30 CN CN200710144520XA patent/CN101148965B/en not_active Expired - Fee Related
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| CN101586425A (en) * | 2008-05-19 | 2009-11-25 | 现代自动车株式会社 | Window driving apparatus |
| CN102204051B (en) * | 2008-11-05 | 2015-01-28 | 罗伯特·博世有限公司 | Method and device for activating monitoring by a jamming protection function in an electrical closing system |
| CN102204051A (en) * | 2008-11-05 | 2011-09-28 | 罗伯特·博世有限公司 | Method and device for activating monitoring by a jamming protection function in an electrical closing system |
| US8633666B2 (en) | 2008-11-05 | 2014-01-21 | Robert Bosch Gmbh | Method and device for activating monitoring by a jamming protection function in an electrical closing system |
| CN102317878B (en) * | 2009-02-11 | 2016-02-10 | 大陆汽车有限公司 | Drive motor for exchanging finishing equipment carries out the method and apparatus of pulse width modulation controlled |
| CN102261210A (en) * | 2010-05-29 | 2011-11-30 | 比亚迪股份有限公司 | Anti-pinch control method for vehicle open-close body |
| CN102261210B (en) * | 2010-05-29 | 2013-10-30 | 比亚迪股份有限公司 | Anti-pinch control method for vehicle open-close body |
| CN102267357A (en) * | 2010-06-03 | 2011-12-07 | 沈思杰 | Hand protection vehicle window and foot protection vehicle door |
| CN102392576A (en) * | 2011-09-20 | 2012-03-28 | 河南天海科技有限公司 | Intelligent control method for automobile electric window |
| CN102418449A (en) * | 2011-12-27 | 2012-04-18 | 昌辉汽车电气***（安徽）有限公司 | Anti-nip control method for automatically correcting electric window in use |
| CN102418449B (en) * | 2011-12-27 | 2014-04-02 | 昌辉汽车电气***（安徽）有限公司 | Anti-nip control method for automatically correcting electric window in use |
| CN107849888A (en) * | 2015-08-06 | 2018-03-27 | 欧姆龙汽车电子株式会社 | Control device for opening/closing member |
| CN107849888B (en) * | 2015-08-06 | 2019-08-13 | 欧姆龙汽车电子株式会社 | Control device for opening/closing member |
| CN109532577A (en) * | 2018-12-24 | 2019-03-29 | 上海科世达-华阳汽车电器有限公司 | A kind of anti-clamping method of automatic seat, device and automatic seat controller |
| CN109532577B (en) * | 2018-12-24 | 2021-12-03 | 上海科世达-华阳汽车电器有限公司 | Anti-pinch method and device of electric seat and electric seat controller |
| CN110074590A (en) * | 2019-03-06 | 2019-08-02 | 锐迈机械科技（吴江）有限公司 | A kind of electronic something or somebody to fall back on device of preventing damage and its control method |
| CN110206437A (en) * | 2019-06-12 | 2019-09-06 | 北京经纬恒润科技有限公司 | The anti-clip control method and device of vehicle body closed system |
| CN110344657A (en) * | 2019-06-26 | 2019-10-18 | 广东汇泰龙科技股份有限公司 | A kind of control method and system of intelligent door lock slip lid finger |
| CN111290297A (en) * | 2020-03-18 | 2020-06-16 | 科世达(上海)机电有限公司 | Car window lifting simulation test system |
| CN111290297B (en) * | 2020-03-18 | 2023-07-28 | 科世达(上海)机电有限公司 | Car window lifting simulation test system |
| CN111794622A (en) * | 2020-06-11 | 2020-10-20 | 上海实业交通电器有限公司 | Anti-pinch module for car window and mounting structure of anti-pinch module |
| CN114274899A (en) * | 2022-01-20 | 2022-04-05 | 吴汉林 | Direct current motor assembly and whole vehicle control system |
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| CN101148965B (en) | 2011-09-14 |
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