CN202913860U - Anti-pinch system of automobile window - Google Patents
Anti-pinch system of automobile window Download PDFInfo
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- CN202913860U CN202913860U CN2012205262863U CN201220526286U CN202913860U CN 202913860 U CN202913860 U CN 202913860U CN 2012205262863 U CN2012205262863 U CN 2012205262863U CN 201220526286 U CN201220526286 U CN 201220526286U CN 202913860 U CN202913860 U CN 202913860U
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- vehicle window
- pinch
- motor
- automobile window
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Abstract
The utility model discloses an anti-pinch system of an automobile window. The anti-pinch system comprises the automobile window, an automobile window traction drawbench, an automobile window motor, a motor control relay, an anti-pinch central processor of the automobile window, an upper switch and a lower switch of the window, an automobile bus connector and window motor hall sensors. The anti-pinch system is characterized in that the two window motor hall sensors are perpendicularly installed with the 90-degree phase difference. The utility model further discloses an anti-pinch force real-time calibrating method of the anti-pinch system of the automobile window. By means of the perpendicular double-hall method, the position and torque of the automobile window can be obtained through hall sampling, and the current torque and position of the automobile window can be calculated through current and integral of the motor. The anti-pinch force can be calculated by comparing the torque of each position of the automobile window, so that high-accuracy anti-pinch and real-time calibrating can be achieved. The anti-pinch system of the automobile window has the advantages of being simple in hardware structure, convenient in software algorithm, low in cost and high in accuracy.
Description
Technical field
The utility model belongs to vehicle electric field, particularly relates to the real-time calibration method of a kind of vehicle window clipping prevention system and anti-pinch power thereof.
Background technology
Along with the fast development of auto industry, the automobile popularity rate also improves fast.Automobile more and more become people live in the middle of the important vehicles, it will become we the life in an indispensable part.Along with the progress of Hyundai Motor electronic technology, traditional component and assembly also developing to electromechanical integration in the automobile.The electronic equipment of widely applying in the automobile has not only improved the comfortableness of automobile, also the safety of automobile has been proposed Secretary.
Power windows is to control the lifting of glass for vehicle window with devices such as motor, lifter, switches.The advantages such as it is convenient that it has switch, can operate simultaneously a plurality of vehicle windows, remote controlled.If but security incident also easily appears in misoperation, the child all occured all over the world blocked the event of being choked to death by automobile electric window, single with the relevant statistics demonstration of the U.S., from nineteen ninety so far, 40 children's death because of being blocked by automobile electric window have nearly been arranged, the every annual mean of the U.S. also has 500 people because similarly accident is injured sees a doctor to emergency ward, and half is wherein arranged is child.And also comprise 11 years old, 15 years old teenager among these children.Therefore, DOT has promulgated the rules FMVSSll8 for the electric car window switch system, the anti-pinching car window relevant parameter is made clear, and all must execute this regulation at car and the jubilee wagen of North America sale after being defined on October 1st, 2008.Although China does not also make jural regulation with regard to this problem, for safety, the vehicle window control module that exploitation has pinch resistant functionality is fully necessary.
Anti-pinching car window is mainly considered the anti-pinch regionally detecting, anti-pinch power, the variation of vehicle window parameter and road condition change etc.Common power window clamp prevention has several, the position that glass for vehicle window is calculated in the pulse that has the current method detection method to adopt to be installed in the integration that rises electric current on the window motor to detect anti-pinch power and utilize hall device to produce.The simple cost of this method hardware configuration is low, but software algorithm is complicated, and the degree of accuracy is not high, and precision is lower.And the anti-pinch current threshold changes with the variation of vehicle, mode of occupation etc., therefore all needs a large amount of tests before application, and is portable poor.Adopt in addition in addition the capacitance sensor at glass for vehicle window edge to detect the method whether obstruction is arranged, or adopt the method such as infrared sensor.
The utility model content
The utility model purpose is to provide a kind of with self-learning function for the defective of prior art, can revise in real time and demarcate the vehicle window clipping prevention system of anti-pinch power and the real-time calibration method of anti-pinch power thereof.
The utility model adopts following technical scheme for achieving the above object:
A kind of vehicle window clipping prevention system comprises vehicle window, vehicle window traction wire drawing, and Car window electric machine, the Electric Machine Control relay, the anti-pinching car window central processing unit, vehicle window is switch up and down, automobile bus and Hall element; It is characterized in that: described Hall element is two, at right angle setting, and two Hall elements have the phase difference of 90 degree.
A kind of real-time calibration method of vehicle window clipping prevention system anti-pinch power comprises the steps:
(1) vehicle window is demarcated, calibration process comprises the dutycycle that detects the hall device pulsewidth, the moment of torsion of each position of vehicle window in the stroke of demarcation vehicle window and the normal uphill process;
(2) linear relationship according to Car window electric machine current i and Motor torque calculates actual torque T
a, calculate vehicle window position calculation value D according to the functional relation of current i and vehicle window position
c
(3) rotation of Car window electric machine can make that Hall element sends hall signal on the motor, and the signal of two Hall elements is the square-wave signals that the rule of 90 degree phase differences is arranged, by recording the number record vehicle window physical location D of single hall signal
aCalculate Motor torque calculated value T by the time difference of detecting two hall signals
c
(4) with the actual torque T that records
aDeduct current physical location D
aTorque arithmetic value T
cJust can obtain Motor torque with respect under normal circumstances deviant; Motor is fixed the rotating ratio of the wire drawing that the traction vehicle window rises, the deviant of the moment of torsion of motor is proportional with the power that vehicle window is applied, calculate the deviate of demarcating the suffered power of vehicle window by Motor torque, the real-time correction vehicle window applied force that normally rises, add the anti-pinch threshold value of setting, realize the real-time calibration of anti-pinching car window power.
The functional relation of current i and vehicle window position is D in the described step (2)
c=C
i∫
0 tI d
iT represents the time that motor rises, and i represents that motor is in the electric current when rising, C
iIt is the constant that to demarcate; Linear relationship according to current of electric i and Motor torque calculates actual torque T
a
Rise window Motor torque and hall signal relation in the described step (3) as follows: T
c=(C
t) * Δ t/ (2 * t
3-3 * t
2* Δ t+t * Δ t
2), T
cThe expression moment of torsion, t=t2, Δ t=t2-t1, Ct are damping parameters, and t1 is time difference of initiating terminal of the square wave of two Hall elements output, and t2 is the time difference of 1/2 square-wave cycle and t1.
The utility model system and method adopts the method for vertical two hall, and the method obtains vehicle window position and moment of torsion by the hall sampling, can calculate the current moment of torsion of Car window electric machine and position by current of electric and integration thereof.Relatively thereby vehicle window just can be calculated anti-pinch power done with high accuracy anti-pinch and real-time demarcation at the moment of torsion of each position in real time.Have advantages of that hardware configuration is simple, software algorithm convenient, the low precision of cost is high.
Description of drawings
Fig. 1 is utility model system architecture schematic diagram;
Fig. 2 is two Hall element output waveform figures.
The specific embodiment
A kind of vehicle window clipping prevention system comprises vehicle window 1 as shown in Figure 1, vehicle window traction wire drawing 2, and Car window electric machine 3, Electric Machine Control relay 4, anti-pinching car window central processing unit 5, vehicle window is switch 6 up and down, automobile bus connection 7 and Hall element 8; Described Hall element 8 is two, at right angle setting, and two Hall elements 8 have the phase difference of 90 degree.
Vehicle window up and down switch 6 sends the signal that rises or descend according to passenger's requirement, Electric Machine Control relay 4 is powered to motor 3 according to the instruction of central processing unit 5, and motor 3 determines the lifting of vehicle window 1 according to sense of current pulling glass traction wire drawing 2.Anti-pinching car window central processing unit 5 can sample to detect by A/D electric current and the direction of Car window electric machine 3.The dual-Hall sensor 8 of Car window electric machine 3 alternately produces pulse signal (as shown in Figure 2) when electric machine rotation, central processing unit 5 detects the edge of pulse signal in real time.
Each winnowing machine window uses independent module vehicle window module.A main control module is arranged usually, and it can transmit control signal by bus network and carry out its lifting order to other vehicle window module.Other vehicle window module not only can be accepted the local keys of key order, can also accept the control command on the bus network, thereby realizes remote control function.The vehicle window control module is come the suffered power of indirect calculation glass by the pulsewidth that gathers motor operating current and hall.Switch comprises an employing without the key switch of self-locking, and this switch has five grades, represents respectively automatic-ascending, rises, and stops, and descends, and automatically descends.
A kind of real-time calibration method of vehicle window clipping prevention system anti-pinch power comprises the steps:
(1) vehicle window is demarcated, calibration process comprises the dutycycle that detects the hall device pulsewidth, the moment of torsion of each position of vehicle window in the stroke of demarcation vehicle window and the normal uphill process;
(2) linear relationship according to Car window electric machine current i and Motor torque calculates actual torque T
a, calculate vehicle window position calculation value D according to the functional relation of current i and vehicle window position
c
(3) rotation of Car window electric machine can make that Hall element sends hall signal on the motor, and the signal of two Hall elements is the square-wave signals that the rule of 90 degree phase differences is arranged, by recording the number record vehicle window physical location D of single hall signal
aCalculate Motor torque calculated value T by the time difference of detecting two hall signals
c
(4) with the actual torque T that records
aDeduct current physical location D
aTorque arithmetic value T
cJust can obtain Motor torque with respect under normal circumstances deviant; Motor is fixed the rotating ratio of the wire drawing that the traction vehicle window rises, the deviant of the moment of torsion of motor is proportional with the power that vehicle window is applied, calculate the deviate of demarcating the suffered power of vehicle window by Motor torque, the real-time correction vehicle window applied force that normally rises, add the anti-pinch threshold value of setting, realize the real-time calibration of anti-pinching car window power.
The functional relation of current i and vehicle window position is D in the described step (2)
c=C
i∫
0 tI d
iT represents the time that motor rises, and i represents that motor is in the electric current when rising, C
iIt is the constant that to demarcate; Linear relationship according to current of electric i and Motor torque calculates actual torque T
aBecause rise the window motor less than rated current the time, electric current is directly proportional with moment of torsion, the resistance the when size of moment of torsion has directly reflected glass rising when not having external force, and Motor torque will increase when vehicle window is subject to anti-pinch external force.When current of electric did not surpass rated current, Motor torque was the actual response of anti-pinch power.Thereby rises the window current of electric and can extrapolate the moment of torsion linear push to calculate anti-pinch power big or small by detecting.We claim that this is actual torque T
aThe integration that rises the window current of electric less than rated current the time can reflect the stroke that glass makes progress, and we claim that this numerical value is vehicle window position calculation value D
c
Rise window Motor torque and hall signal relation in the described step (3) as follows: T
c=(C
t) * Δ t/ (2 * t
3-3 * t
2* Δ t+t * Δ t
2), T
cThe expression moment of torsion, t=t2, Δ t=t2-t1, Ct are damping parameters, and t1 is time difference of initiating terminal of the square wave of two Hall elements output, and t2 is the time difference of 1/2 square-wave cycle and t1.High accuracy dual-Hall sensor spare A and the B of 2 90 degree skews are housed rising the window motor in addition.The rotation that rises the window motor can make Hall element on the motor send hall signal have 90 degree phase differences rule square-wave signal as shown in Figure 2, can record vehicle window physical location D by the number that records single hall signal
aCan further detect Motor torque by the time difference of detecting 2 hall signals, and then measure anti-pinch power.
When system, need to demarcate the vehicle window of a certain model.Calibration process comprises the dutycycle that detects the hall device pulsewidth, demarcates the moment of torsion of each position of vehicle window in the stroke of vehicle window and the normal uphill process etc.After demarcation is finished, according to can real-time update in the process of the each automatic-ascending of algorithm of the present utility model the actual torque value of current location, the torque value that Real-time Measuring gets deduct current location to the torque arithmetic value just can obtain Motor torque with respect under normal circumstances deviant.Because motor is fixed the rotating ratio of the wire drawing that the traction vehicle window rises, the deviant of the moment of torsion of motor is proportional with the power that vehicle window is applied.Can calculate by Motor torque thus the size of the suffered power of vehicle window.When calculating power suffered on the vehicle window greater than the threshold value that we set, just make vehicle window stop to rise, carry out down maneuver.
Claims (1)
1. a vehicle window clipping prevention system comprises vehicle window, vehicle window traction wire drawing, and Car window electric machine, the Electric Machine Control relay, the anti-pinching car window central processing unit, vehicle window is switch up and down, automobile bus and Hall element; It is characterized in that: described Hall element is two, at right angle setting, and two Hall elements have the phase difference of 90 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205262863U CN202913860U (en) | 2012-10-15 | 2012-10-15 | Anti-pinch system of automobile window |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205262863U CN202913860U (en) | 2012-10-15 | 2012-10-15 | Anti-pinch system of automobile window |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202913860U true CN202913860U (en) | 2013-05-01 |
Family
ID=48162182
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205262863U Expired - Fee Related CN202913860U (en) | 2012-10-15 | 2012-10-15 | Anti-pinch system of automobile window |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103556901A (en) * | 2013-10-30 | 2014-02-05 | 浙江吉利控股集团有限公司 | Automobile window intelligent regulating system and control method thereof |
| CN105863424A (en) * | 2016-06-07 | 2016-08-17 | 浙江精通自动控制技术有限公司 | Automotive anti-pinch controller based on double Hall sensors |
| CN110206438A (en) * | 2019-05-16 | 2019-09-06 | 马瑞利汽车电子(广州)有限公司 | A kind of anti-pinching car window caliberating device |
| CN111005642A (en) * | 2019-12-26 | 2020-04-14 | 中山市领越电子科技有限公司 | Anti-clamping device for automobile window |
-
2012
- 2012-10-15 CN CN2012205262863U patent/CN202913860U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103556901A (en) * | 2013-10-30 | 2014-02-05 | 浙江吉利控股集团有限公司 | Automobile window intelligent regulating system and control method thereof |
| CN103556901B (en) * | 2013-10-30 | 2016-01-27 | 浙江吉利控股集团有限公司 | Automotive window intelligent regulating system and control method thereof |
| CN105863424A (en) * | 2016-06-07 | 2016-08-17 | 浙江精通自动控制技术有限公司 | Automotive anti-pinch controller based on double Hall sensors |
| CN110206438A (en) * | 2019-05-16 | 2019-09-06 | 马瑞利汽车电子(广州)有限公司 | A kind of anti-pinching car window caliberating device |
| CN111005642A (en) * | 2019-12-26 | 2020-04-14 | 中山市领越电子科技有限公司 | Anti-clamping device for automobile window |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20141015 |
|
| EXPY | Termination of patent right or utility model |