CN103161379A - Anti-pinch car window system - Google Patents
Anti-pinch car window system Download PDFInfo
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- CN103161379A CN103161379A CN2011104194271A CN201110419427A CN103161379A CN 103161379 A CN103161379 A CN 103161379A CN 2011104194271 A CN2011104194271 A CN 2011104194271A CN 201110419427 A CN201110419427 A CN 201110419427A CN 103161379 A CN103161379 A CN 103161379A
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Abstract
The invention relates to an anti-pinch car window system which comprises an encoder and an elevator motor, car window glass positioned in a movable area, a signal in line with a position, microcontroller controlling the elevator motor through pulse wave sampling times and a relay unit supplying power to the elevator motor to enable the elevator motor to turn forward or reversely. Therefore the position of the car window glass in the movable area is in an anti-pinch area, and when the microcontroller judges that an object is placed on the car window glass, the microcontroller controls the elevator motor to turn reversely, and the car window glass is prevented from clamping the object.
Description
Technical field
The present invention relates to a kind of window system, espespecially a kind of anti-squeeze window system.
Background technology
Vehicle now adopts power windows mostly, with press direction switch control lift motor on move and move down, and then drive the movement of glass for vehicle window.Yet, under the convenient condition of controlling vehicle window of this kind, if having an object and vehicle window to be moved on Sustainable Control on vehicle window, be easy to because of not the noting of user, make vehicle window can on to move scope more and more less and clip to this object.If this object is child's head or during hand again, more can cause the danger that to retrieve.Therefore, power windows needs anti-jamming device to avoid dangerous generation.
In addition, present anti-jamming device is mostly according to some sensors, as infrared rays, ultrasonic wave, the laser induced function that reaches automatic anti-pinch, but expensive because of sensor, will make cost relatively improve, can't popularize.
The present invention proposes a kind of anti-squeeze window system, only utilizes lift motor to move up and the situation when moving down is carried out anti-pinching car window, crushes the people and cause danger to prevent vehicle window.
Summary of the invention
Because sensor is expensive, and can't popularize the problem of anti-pinching car window device.The object of the invention is to overcome the deficiencies in the prior art and defective, propose a kind of anti-squeeze window system, only make progress by lift motor and the situation when moving down, judge lift motor when moving up, whether object is arranged above glass for vehicle window.Make the present invention can utilize simple device judgement, do not reducing anti-pinch vehicle window function reduction low cost.
For reaching above-mentioned purpose, the invention provides a kind of anti-squeeze window system, comprise a lift motor, a glass for vehicle window, a microcontroller and a relay unit.Wherein, lift motor has an encoder, and encoder comprises a front contact and a back contact, to produce accordingly a front contact signal and a back contact signal.Glass for vehicle window connects lift motor, and is positioned at a moving area, to allow glass for vehicle window move up or down at moving area.When lift motor is forward, the glass for vehicle window position moves up; And be that counter-rotating, glass for vehicle window position move down when lift motor.And moving area has an anti-pinch zone.
Microcontroller receives front contact signal and back contact signal, take the detecting lift motor as forward or reverse, and produce the position signal represent the glass for vehicle window position and the pulse wave sampling number of times by the glass for vehicle window position every a sample time, judging whether an object is arranged on glass for vehicle window in the anti-pinch zone, and produce a forward signal and an inverting signal.Relay unit couples one and starts electric power, so that microcontroller electric power to be provided, and supplies lift motor electric power by microcontroller.And relay unit receives forward signal and inverting signal, and switching accordingly a sense of current of lift motor, and then to control lift motor be forward or reverse.
Wherein, in the anti-pinch zone, when lift motor forward and pulse wave sampling number of times during greater than an absolute anti-pinch number of times, the counter-rotating of microprocessor control lift motor, or when the pulse wave sampling number of times difference of lift motor forward and position signal and continuous last position signal during greater than a relative anti-pinch number of times, the microprocessor control lift motor reverses.Meaning namely, in the anti-pinch zone and when on microcontroller judgement glass for vehicle window, object being arranged, microcontroller will be controlled the lift motor counter-rotating, clips to object to prevent glass for vehicle window when the glass for vehicle window position.
In addition, microcontroller of the present invention can comprise a decoding unit, a processing unit, a motor unit, a switch element, and checks unit and a timing unit.Wherein, decoding unit can receive front contact signal and back contact signal, to produce a decoding message every sample time.Processing unit can receive the decoding message, with according to the decoding message, produces position signal, and can calculate the number of repetition of decoding message, produces pulse wave sampling number of times, and then compares with absolute anti-pinch number of times.
But motor unit is receiving position signal and pulse wave sampling number of times, and produces accordingly forward signal and inverting signal, to control the lift motor action.Switch element can receive upwards signal, a downward signal, an automatically upper signal and an automatically lower signal, and to produce a direction control signal every sample time to motor unit.And motor unit can be controlled signal according to direction and produce forward signal and inverting signal, to control the lift motor action.And switch element also can an external switch element, transmit upwards signal, downwards signal, automatically go up signal and automatically under signal to switch element, move up or down with further control glass for vehicle window.
Check that the unit receives decoding message, position signal and pulse wave sampling number of times, to produce accordingly an abnormal signal.At this moment, check that the unit as judging data wrong or illogical places, informs motor unit immediately, judge constantly with the moving area in glass for vehicle window whether object is arranged on glass for vehicle window, with further eliminating abnormal signal.Timing unit can be used to detect decoding unit, processing unit, motor unit, checks whether unit and switch element have in running.If have, timing unit makes zero the time of its corresponding unit after circulation of unit running.
Moreover motor unit of the present invention can have comparison list, with anti-pinch number of times absolute according to the position signal adjustment.And the table of comparisons can be according to lift motor electric power, when glass for vehicle window moves down, the anti-pinch power of suffered resistance and a corresponding glass for vehicle window position is made.
Moreover when glass for vehicle window moved down, when motor unit of the present invention can be according to lift motor electric power, vehicle window glass movable, suffered resistance and anti-pinch power revised the table of comparisons.Meaning and this motor unit can be according to the vehicle window realities of different car moneys, as voltage, water cut, the precision of sheet metal, the factors such as friction of track, come the numerical value in this table of comparisons of adaptive adjustment.
Moreover relay unit of the present invention can comprise a voltage regulation unit, a forward relay, a counter-rotating relay.Wherein, voltage regulation unit can be used to the stable voltage that starts electric power.The forward relay can couple voltage regulation unit, and according to the forward signal, controls the whether conducting of forward relay and lift motor.If glass for vehicle window moves up.The counter-rotating relay can couple voltage regulation unit, and according to inverting signal, controls the whether conducting of counter-rotating relay and lift motor.If glass for vehicle window moves down.
Moreover the regional location in anti-pinch zone can according to position signal, be obtained in anti-pinch of the present invention zone with a predetermined ratio.Wherein, the glass for vehicle window standard-sized sheet can be the regional location that is positioned at moving area 0%, and the glass for vehicle window complete shut-down can be the regional location that is positioned at moving area 100%.And the anti-pinch zone can be positioned at the regional location of moving area more than 38%.
Moreover, moving area of the present invention can have more one without the anti-pinch zone, can be positioned at moving area 0% to the regional location that is no more than 38%, so that glass for vehicle window can be moved smoothly, and then provide motor unit enough moving areas, come the vehicle window reality correction table of comparisons according to different car moneys.
Moreover moving area of the present invention can have more a pressurised zone, can be positioned at the regional location of a short distance unit under moving area 100%.And the positive rotary speed of the lift motor of pressurised zone can greater than the positive rotary speed of lift motor without anti-pinch zone and anti-pinch zone, close glass for vehicle window to strengthen glass for vehicle window rising power, and then reach the purpose that rainwater can not infiltrate.And this short distance unit can be 2 centimetres, clips to finger to prevent glass for vehicle window.
Moreover, be down to the regional location of moving area 0% when the glass for vehicle window position, when meaning was the glass for vehicle window standard-sized sheet, position signal of the present invention was made zero, to reset.
Moreover decoding unit of the present invention can when a rear startup stand-by period of lift motor startup is not received front contact signal and back contact signal, check that the unit produces an emergent stopping signal to relay unit, to stop the lift motor action.And this starts stand-by period and can be 500ms, and is overheated or burn circuit to prevent the lift motor malfunction.
Moreover, the Stop-wait time after lift motor stops action, microcontroller of the present invention can be noted down position signal the temporary element to motor unit, and when startup electric power provides electrical power to microcontroller next time, the read-out position signal, so that when using anti-squeeze window system of the present invention next time, can learn immediately the vehicle window position.And temporary element can be non-voltile memory (Non-Volatile Memory, NVRAM), makes the glass for vehicle window position not lose because of power failure.
moreover, when position signal is negative, position signal and lift motor performance of a different dive (transmit the forward signal to lift motor as motor unit, but position signal is to show the lift motor counter-rotating), the decoding message produces wrong numerical value and (is subject to noise as the decoding message, produce decoding error) or pulse wave sampling number of times when representing the too fast motor sampling number of times of lift motor rotating speed, of the present inventionly check that the unit can produce abnormal signal to motor unit, and in without in the anti-pinch zone, judge whether an object is arranged on glass for vehicle window in the anti-pinch zone and in pressurised zone.
Moreover when position signal is made zero and the glass for vehicle window complete shut-down, short distance unit of the present invention can be reset.Meaning namely descends some apart from the restriction site of being used as short distance unit after the glass for vehicle window complete shut-down, and record position signal at this moment.And this short distance unit that resets can be 2 centimetres.
In addition, the phase difference between front contact signal of the present invention and back contact signal can be 90 degree.
Above general introduction and ensuing detailed description are all exemplary in nature, are in order to further illustrate claim of the present invention.And about other purpose of the present invention and advantage, will be set forth in follow-up explanation and diagram.
Description of drawings
Fig. 1 is anti-squeeze window system Organization Chart of the present invention;
Fig. 2 is glass for vehicle window pressurised zone of the present invention, anti-pinch zone and without the anti-pinch area schematic;
Fig. 3 A is lift motor forward decoding schematic diagram of the present invention;
Fig. 3 B is lift motor counter-rotating decoding schematic diagram of the present invention;
Fig. 4 A is decoding message of the present invention and pulse wave sampling number of times schematic diagram;
Fig. 4 B is that the situation of front contact signal of the present invention and back contact signal is processed list;
Fig. 5 A～5C is that relay unit of the present invention is controlled lift motor forward and counter-rotating schematic diagram;
Fig. 6 is anti-squeeze window system flow chart of the present invention;
Fig. 7 is the regional flow chart of glass for vehicle window anti-pinch of the present invention;
Fig. 8 is that the present invention processes the flow chart that lift motor is abnormality.
Symbol description in figure
110 microcontroller 111 decoding units
112 processing unit 113 motor units
114 check unit 115 timing units
116 switch element 120 relay units
121 voltage regulation units 122 turn relay
123 counter-rotating relay 130 lift motors
135 encoder 140 glasss for vehicle window
The 1132 temporary elements of the table of comparisons 1134
A front contact B back contact
A descends signal automatically without anti-pinch zone Adw
It is regional that Aup goes up signal b anti-pinch automatically
C pressurised zone Dc decoding message
The Dud direction is controlled the downward signal of signal Dw
Er abnormal signal Fwd forward signal
Pa front contact signal Pb back contact signal
Pc electric power Pcount position signal
Pm electric power Ps starts electric power
Pwide pulse wave sampling number of times Rvs inverting signal
The Stop emergent stopping signal Up signal that makes progress
The Zone moving area
S600, S610, S620, S630, S640a, S640b, step
S640c，S650a，S650b，S650c
S700, S710, S720, S730, S740, S750, S760 step
S800, S810, S820, S830, S840, S850 step
The specific embodiment
Please refer to Fig. 1, be anti-squeeze window system Organization Chart of the present invention.As shown in Figure 1, anti-squeeze window system comprises a microcontroller 110, a relay unit 120, a lift motor 130, a glass for vehicle window 140.Wherein, lift motor 130 has an encoder 135, and this encoder 135 comprises a front contact A and a back contact B, to produce accordingly a front contact signal Pa and a back contact signal Pb to microcontroller 110.In the present embodiment, front contact signal Pa and back contact signal Pb are all square-wave signal, and 90 degree of the phase difference between front contact signal Pa and back contact signal Pb, to allow microcontroller 110 judgements lift motor at this moment as forward or reverse.
Please also refer to Fig. 2, glass for vehicle window 140 connects these lift motors 130, and glass for vehicle window 140 is positioned at a moving area Zone, to allow this glass for vehicle window 140 move up or down in the scope of moving area Zone.In the present embodiment, moving area Zone is divided into the regional location of 100 equal portions, and namely 0%～100%.Wherein, glass for vehicle window 140 standard-sized sheets are the regional location that is positioned at this moving area Zone0%, and these glass for vehicle window 140 complete shut-downs are the regional location that is positioned at this moving area Zone100%.When this lift motor 130 is forward, this glass for vehicle window 140 positions move up, and are counter-rotating when this lift motor 130, and this glass for vehicle window 140 positions move down.In addition, moving area Zone has one without anti-pinch zone a, anti-pinch zone b and a pressurised zone c.In the present embodiment, be positioned at this moving area Zone 0% to about 38% regional location without anti-pinch zone a; Anti-pinch zone b is positioned at this moving area Zone 38% to about 97% regional location; And pressurised zone c can close vehicle window as principle not clip to finger, and its pressurised zone c is the about regional location of 2 centimetres in below of moving area Zone 100%.
Microcontroller 110 receives this front contact signal Pa and this back contact signal Pb, to detect this lift motor 130 as forward or reverse.And microcontroller 110 is the pulse wave signal of (being 128 microseconds at the present embodiment) sampling front contact signal Pa and back contact signal Pb at regular intervals, calculating accordingly the position signal Pcount represent glass for vehicle window 140 positions, learn that to utilize position signal Pcount glass for vehicle window 140 positions are arranged at present without which of anti-pinch zone a, anti-pinch zone b or pressurised zone c.In addition, the pulse bandwidth of front contact signal Pa and back contact signal Pb can represent the rotating speed of lift motor 130.For regularly capturing front contact signal Pa and back contact signal Pb, therefore can utilize a sampled number of times of pulse wave to learn the width of pulse wave due to encoder 135, and then correspondingly produce a pulse wave sampling number of times Pwide and learn the rotating speed of lift motor 130.In addition, the rotating speed of lift motor 130 can become the speed that glass for vehicle window 140 rises or descends through mechanical switch.Clip to object when rising as glass for vehicle window 140 and speed is slack-off.Therefore, when glass for vehicle window 140 rises and is in anti-pinch zone b, pulse wave sampling number of times Pwide can be used to judge whether an object is arranged on glass for vehicle window 140, represent namely whether anti-pinch mechanism will be activated.If microcontroller 110 will be controlled lift motor 130 allows glass for vehicle window 140 descend.
In addition, microcontroller 110 comprises a decoding unit 111, a processing unit 112, a motor unit 113, and checks unit 114, a timing unit 115 and a switch element 116.Wherein, decoding unit 111 is for receiving this front contact signal Pa and this back contact signal Pb, to produce a decoding message Dc every sample time.Please also refer to Fig. 3 A and Fig. 3 B.Fig. 3 A is lift motor forward decoding schematic diagram of the present invention.Fig. 3 B is lift motor counter-rotating decoding schematic diagram of the present invention.Decoding unit 111 is to capture front contact signal Pa and back contact signal Pb sample time every 128 microseconds, take analysis lift motor 130 this moment as forward or reverse.If decoding unit 111 is received (Pa, Pb)=(H, H), will produce decoding message Dc=3; If decoding unit 111 is received (Pa, Pb)=(L, H) and will be produced decoding message Dc=2; If decoding unit 111 is received (Pa, Pb)=(H, L) and will be produced decoding message Dc=1; And if decoding unit 111 receives that (Pa, Pb)=(L, L) will produce decoding message Dc=0.And decoding message Dc is sent to processing unit 112, further to perform an analysis.
And after processing unit 112 receives decoding message Dc, then will produce position signal Pcount according to decoding message Dc, and calculate the number of repetition of decoding message Dc, produce pulse wave sampling number of times Pwide.As shown in Figure 3A, the ordinal relation of (3 → 2), (2 → 0), (0 → 1) or (1 → 3) if the pass order of processing unit 112 judgement decoding message Dc is served as reasons, lift motor 130 will be judged as forward, and each variation of lift motor 130 will make position signal Pcount up be counted a unit this moment, represent that namely glass for vehicle window 140 positions have up been moved a unit distance.And if as shown in Fig. 3 B, the serve as reasons ordinal relation of (3 → 1), (1 → 0), (0 → 2) or (2 → 3) of the pass order of processing unit 112 judgement decoding message Dc, lift motor 130 will be judged as counter-rotating, and each variation of lift motor 130 will make position signal Pcount down be counted a unit this moment, namely represent the glass for vehicle window 140 positions unit distance that moved down.Its integrated status please refer to the explanation of Fig. 4 A and Fig. 4 B, if the sample time of 112 couples of front contact signal Pa of processing unit and back contact signal Pb is much larger than front contact signal Pa and back contact signal Pb self pulse wave time, the pass order of judgement decoding message Dc is with constant, as (0 → 0), (1 → 1), (2 → 2) or (3 → 3), Dc is unchanged for this expression decoding message, and position signal Pcount does not make any counting.If but the pass order of decoding message Dc is not above-mentioned pass order, as (0 → 3), (1 → 2), (2 → 1) or (3 → 0) etc., this is presented at, and front contact signal Pa and back contact signal Pb change simultaneously in sample time, this represents that also front contact signal Pa and back contact signal Pb self burst length are less than sample time, or front contact signal Pa and back contact signal Pb are subject to noise, and this will further process in checking unit 114.
Then, please more simultaneously with reference to figure 4A, for the signal of the comprehensively glass for vehicle window rise and fall of front contact signal Pa and back contact signal Pb is resolved, and Fig. 4 B, be the comprehensive tabular of above-mentioned various situations.In the present embodiment, glass for vehicle window 140 standard-sized sheets are the reference position, i.e. position signal Pcount=0.In addition, when glass for vehicle window 140 positions were controlled to standard-sized sheet, position signal Pcount can be by auto zero, resetting the reference position of position signal Pcount, and then reduced the cumulative bad error that position signal Pcount produces because of counting or noise.
The rate of climb for glass for vehicle window 140 can decide according to the pulse bandwidth of front contact signal Pa and back contact signal Pb.In other words, decoding message Dc can represent pulse bandwidth, and is also representing the speed of glass for vehicle window 140 rise and fall.Blanket above-mentioned, the situation of the front contact signal Pa of double sampling and back contact signal Pb is arranged be Fig. 4 B, if the constant pulse wave sampling of the front contact signal Pa of double sampling and back contact signal number of times Pwide adds 1, otherwise pulse wave sampling number of times Pwide makes zero.The present embodiment is tried to achieve pulse wave sampling number of times Pwide by the number of times that processing unit 112 calculates the repetition same condition sampling of decoding message Dc.As shown in Fig. 4 A, decoding unit 111 produces the decoding message Dc that repeats 5 times " 3 ".In the present embodiment, be about 128 microseconds sample time, the pulse bandwidth of front contact signal Pa and back contact signal Pb is about 5 milliseconds, and slower according to lift motor 140 speed, and the pulse bandwidth of front contact signal Pa and back contact signal Pb is wider.
116 of switch elements receive one and represent that the upwards signal Up, that glass for vehicle window 140 moves up represents that the downward signal Dw, that glass for vehicle window 140 moves down represents that the automatically upper signal Aup and that glass for vehicle window 140 moves up automatically represents the automatically lower signal Adw that glass for vehicle window 140 moves down automatically, controls signal Dud to this motor unit 113 to produce a direction.And motor unit 113 is controlled signal Dud according to direction and is produced forward signal Fwd and inverting signal Rvs, to be used for controlling this lift motor 130 actions.In the present embodiment, the external switch element of switch element 116 (not drawing), with be used for transmitting upwards signal Up, downwards signal Dw, automatically go up signal Aup and automatically under signal Adw to switch element 116, move up or down with further control glass for vehicle window 140.
Check that 114 of unit receive decoding message Dc, position signal Pcount and pulse wave sampling number of times Pwide, to produce accordingly an abnormal signal Er.At this moment, judge data wrong or illogical places when checking unit 114, as position signal Pcount surpass maximum value or enter negative value (expression position signal Pcount value lost efficacy), motor unit 113 transmits forward signal Fwd to lift motor 130, but position signal Pcount shows that lift motor 130 counter-rotatings, decoding message Dc are subject to noise and produce decoding error or pulse wave sampling number of times Pwide lower than representing the fastest motor of these lift motor 130 rotating speeds number of times of taking a sample.Check that unit 114 will inform motor unit 113 immediately, with further eliminating abnormal signal Er.Check that unit 114 processing abnormal signal Er can be divided into two kinds.One for can establish back initial value immediately, as wrong in the maximum value of position signal Pcount, checks that unit 114 can establish the maximum value of position signal Pcount the position signal Pcount of carriage return window glass 140 complete shut-downs immediately again; At this moment another need again to find out parameter for can not establish back reference value immediately again, and for example lose the position of glass for vehicle window 140, and do not know that glass for vehicle window 140 positions are without anti-pinch zone a, anti-pinch zone b or at pressurised zone c this moment.Due to security consideration, it is anti-pinch zone b that motor unit 113 is set whole moving area Zone immediately.Certainly, under above-mentioned condition, also can be judged into and clip to object by action unit 113 in the time of glass for vehicle window 140 complete shut-down, and automatically descend.When not excessive glass for vehicle window 140 drops to standard-sized sheet, position signal Pcount will be reset the reference position of position signal Pcount by auto zero, and then give correct position signal Pcount for change, get rid of abnormal signal Er to reduce problematic numerical value.
Please also refer to Fig. 5 A, Fig. 5 B and Fig. 5 C.Fig. 5 A～Fig. 5 C is that relay unit of the present invention is controlled lift motor forward and counter-rotating schematic diagram.In the present embodiment, as shown in Fig. 5 A, forward relay 122 and counter-rotating relay 123 are all transistor switch, to control lift motor 130 forward or reverse according to the annexation between above-mentioned transistor switch and startup electric power Ps and ground connection.As shown in Fig. 5 B, relay unit 120 wants to make lift motor 130 forwards, control forward relay 122 and start electric power Ps and be connected and control reverse relay 123 and grounding connection, make startup electric power Ps pass through lift motors 130 to counter-rotating relay 123 by forward relay 122, and reach the action of lift motor 130 forwards.As shown in Fig. 5 C, relay unit 120 wants to make lift motor 130 counter-rotatings, control forward relay 122 with grounding connection and control counter-rotating relay 123 and be connected with startup electric power Ps, make startup electric power Ps pass through lift motors 130 to forward relay 122 by counter-rotating relay 123, and reach the action of lift motor 130 counter-rotatings.
When 140 of glasss for vehicle window in anti-pinch zone b, and lift motor 130 forwards and pulse wave sampling number of times Pwide is during greater than an absolute anti-pinch number of times, also or the pulse wave sampling number of times Pwide difference of lift motor 130 forwards and position signal Pcount and continuous last position signal Pcount during greater than a relative anti-pinch number of times, microcontroller 110 will be controlled lift motor 130 segment distances that reverse.This has an object to exist above expression glass for vehicle window 140, therefore will control lift motor 130 counter-rotatings, prevents that glass for vehicle window 140 from clipping to this object.In addition, in the present embodiment, an above-mentioned segment distance represents glass for vehicle window 140 positions three unit distances that moved down.
In addition, motor unit 113 includes comparison list 1132 and a temporary element 1134.Wherein, the table of comparisons 1132 is used for adjusting this absolute anti-pinch number of times and this relative anti-pinch number of times according to this position signal Pcount.This is that the table of comparisons 1132 is can be before anti-squeeze window system running of the present invention prior by lift motor 130 electric power Pm, when glass for vehicle window 140 moves down, the anti-pinch power of suffered resistance (as inconsistent in the friction factor of glass for vehicle window 140 when mobile range Zone moves) and corresponding glass for vehicle window 140 positions is set up the every corresponding parameter of glass for vehicle window 140, makes different glasss for vehicle window 140 positions can be to different absolute anti-pinch number of times and relative anti-pinch number of times should be arranged.Also allow lift motor 130 can keep normally stable running of function under different electric power Pm.
Come again, motor unit 113 also can be when glass for vehicle window 140 moves down according to lift motor 130 electric power Pm, when this glass for vehicle window 140 moves, the anti-pinch power of suffered resistance and corresponding glass for vehicle window 140 positions is revised the table of comparisons 1132, as the vehicle window reality according to different car moneys, as voltage, water cut, the precision of sheet metal, the factors such as friction of track, come absolute anti-pinch number of times and relative anti-pinch number of times in the adaptive adjustment table of comparisons 1132.
As mentioned above, moving area Zone without anti-pinch zone a, anti-pinch zone b and pressurised zone c, can decide by position signal Pcount.Prevent infiltration for pressurised zone c being had strengthen closing effect, and can not clip to the purpose of finger simultaneously.Pressurised zone c is set at the regional location that is positioned at a short distance unit under moving area Zone100%, pressurised zone c makes outside can't pass through by finger, the positive rotary speed of lift motor 130 of pressurised zone c is greater than the positive rotary speed of lift motor 130 without anti-pinch zone a and anti-pinch zone b, increasing the upward pressure road, and then strengthen closing effect and prevent infiltration.In the present embodiment, short distance unit is 2 centimetres.And the making precision of each glass for vehicle window 140 is inconsistent, therefore the position signal Pcount during glass for vehicle window 140 complete shut-down also may have error.Therefore, when position signal Pcount made zero and glass for vehicle window 140 complete shut-downs after, glass for vehicle window 140 can reset this short distance unit next time when rising to complete shut-down, and the position signal Pcount of record this moment.
Then, be that vehicle window can be risen without the purpose of anti-pinch zone a, and leave the space and can allow interior absolute anti-pinch number of times and the relative anti-pinch number of times of the adaptive adjustment table of comparisons 1132 of vehicle window energy.Therefore, under normal the use, zone a there is no the mechanism that has object to exist above judgement glass for vehicle window 140 without anti-pinch, and if really have object to exist on glass for vehicle window 140, also because from glass for vehicle window 140 complete shut-downs, very large distance being arranged still, and need not to worry the problem that crushes this object.
In addition, do not receive when decoding unit 111 startup stand-by period after lift motor 130 starts front contact signal Pa and the back contact signal Pb that lift motor 130 runnings produce, meaning is that front contact signal Pa and back contact signal Pb are constant.Also will make pulse wave sampling number of times Pwide constantly increase and surpass the standard value of pulse wave sampling number of times Pwide.Check that unit 114 produces an emergent stopping signal Stop then to relay unit 120, to cut off immediately lift motor 130 electric power Pm, move and stop lift motor 130.And then prevent that lift motor 130 from causing lift motor 130 overheated or burn circuit because of malfunction.In the present embodiment, the stand-by period is 500ms.
In addition, when lift motor 130 stops moving a Stop-wait after the time, microcontroller 110 is with the temporary element 1134 of position signal Pcount record to this motor unit 113.And when starting electric power Ps electric power Pc is provided to this microcontroller 110 next time, read this position signal Pcount, so that when using anti-squeeze window system of the present invention next time, can learn immediately glass for vehicle window 140 positions.In the present embodiment, temporary element is a non-volatile internal memory element, can make carbon copies read-only storage (Electrically Erasable Programmable Read Only Memory as the electronics formula of erasing, EEPROM), make this temporary element can not lose because of loss of power the tram of glass for vehicle window 140.
Next, please also refer to Fig. 6, be anti-squeeze window system flow chart of the present invention.The driver starts the vehicle with anti-squeeze window system of the present invention, and then input starts electric power Ps to whole anti-squeeze window system (step S600).Then, lift motor 130 will produce front contact signal Pa and rear point of contact signal Pb to decoding unit 111 by encoder 135, and decoding unit 111 also produces decoding message Dc (step S610) after receiving front contact signal Pa and rear point of contact signal Pb.And processing unit 112 is taken a sample number of times Pwide to motor unit 113 (step S620) with calculating location signal Pcount and by the pulse wave of a certain vehicle window position then.Next, motor unit 113 will according to position signal Pcount judge glass for vehicle window 140 positions be positioned at moving area Zone without anti-pinch zone a, anti-pinch zone b or pressurised zone c (step S630).At this moment, if glass for vehicle window 140 positions are judged as without anti-pinch zone a (step S640a), motor unit 113 will be controlled signal Dud according to direction and control the lift motor action, namely as power windows control mode (step S650a).Then, decoding unit 111 receives front contact signal Pa and rear point of contact signal Pb next time immediately, to repeat above-mentioned steps (step S610).If glass for vehicle window 140 positions are judged as anti-pinch zone b (step S640b), motor unit 113 will be controlled signal Dud, position signal Pcount and pulse wave sampling number of times Pwide according to direction and control the lift motor action, clip to object (step S650b) to prevent glass for vehicle window 140.Then, decoding unit 111 receives front contact signal Pa and rear point of contact signal Pb next time immediately, to repeat above-mentioned steps (step S610).If glass for vehicle window 140 positions are judged as pressurised zone c (step S640c), motor unit 113 will be controlled signal Dud according to direction and control the lift motor action, and the positive rotary speed of increase lift motor, increasing the upward pressure road, and then strengthen closing effect and prevent infiltration (step S650c).Then, decoding unit 111 receives front contact signal Pa and rear point of contact signal Pb next time immediately, to repeat above-mentioned steps (step S610).
Come again, please refer to Fig. 7, be the regional flow chart of glass for vehicle window anti-pinch of the present invention.After glass for vehicle window 140 is judged to be by action unit 113 the anti-pinch zone b that is positioned at moving area Zone (step S700), motor unit 113 is inquired about the table of comparisons 1132 immediately, and the pulse wave of obtaining correspondence position signal Pcount is taken a sample number of times Pwide as absolute anti-pinch number of times, namely in the table of comparisons 1132, different glasss for vehicle window 140 positions are to there being different pulse wave sampling number of times Pwide values (step S710).At this moment, motor unit 113 will detect lift motor 130 for forward and pulse wave sampling number of times Pwide whether greater than absolute anti-pinch number of times (step S720).If motor unit 113 will produce forward signal Fwd and the inverting signal Rvs that represents lift motor 130 counter-rotatings, to control lift motor 130 counter-rotatings (step S730).Otherwise, motor unit 113 will further judge the lift motor 130 of this moment be whether forward and detect this position signal Pcount and last time the pulse wave of position signal Pcount whether take a sample the difference of number of times Pwide greater than relative anti-pinch number of times (step S740).If motor unit 113 will produce forward signal Fwd and the inverting signal Rvs that represents lift motor 130 counter-rotatings, to control lift motor 130 counter-rotatings (step S750).Otherwise motor unit 113 will produce forward signal Fwd and the inverting signal Rvs that represents lift motor 130 forwards, to control lift motor 130 forwards (step S760).
Come again, please refer to Fig. 8, for the present invention processes the flow chart that lift motor is abnormality.As shown in Figure 8, inconsistent with position signal Pcount when lift motor 130 action, as glass for vehicle window 140 positions up moving, but the glass for vehicle window 140 corresponding position signal Pcount in position are judged as move down (step S800).At this moment, check that position signal Pcount will be judged in unit 114 illogical, produce immediately abnormal signal Er to motor unit 113 (step S810), and motor unit 113 then will in glass for vehicle window 140 without anti-pinch zone a, anti-pinch zone b and pressurised zone c, be that whole moving area Zone judges whether object is arranged on glass for vehicle window 140, and further get rid of abnormal signal Er (step S820).Come again, check that unit 114 will judge whether abnormal signal Er can reset initial value (step S830) immediately.If can, check that unit 114 reduces immediately problematic numerical value and gets rid of abnormal signal Er (step S840).Otherwise, position signal Pcount as the present embodiment, check that unit 114 control glasss for vehicle window 140 drop to the end (standard-sized sheet), make position signal Pcount be made zero, reset the reference position of position signal Pcount, and then give correct position signal Pcount (step S850) for change.
Therefore, from the above, anti-squeeze window system of the present invention only utilizes lift motor upwards and the information when moving down, and judges lift motor when moving up, and whether object is arranged above glass for vehicle window, crushes the people and cause danger further to prevent vehicle window.Simultaneously, anti-squeeze window system of the present invention is divided into the moving area of glass for vehicle window without anti-pinch is regional, anti-pinch is regional and pressurised zone.And in revising the table of comparisons according to the vehicle window actual conditions of different car moneys without the anti-pinch zone; In the anti-pinch zone, pinch resistant functionality can be arranged; Can have in pressurised zone and strengthen closing effect and prevent infiltration.Make the present invention can utilize simple judgment means to replace sensor, and in the situation that do not reduce anti-pinch vehicle window function, reach the purpose that reduces costs.
Above-described embodiment is only given an example for convenience of description, and the interest field that the present invention advocates should be as the criterion so that claims are described certainly, but not only limits to above-described embodiment.
Claims (17)
1. an anti-squeeze window system, is characterized in that, comprising:
One lift motor has an encoder, and this encoder comprises a front contact and a back contact, to produce accordingly a front contact signal and a back contact signal;
One glass for vehicle window, connect this lift motor, and be positioned at a moving area, to allow this glass for vehicle window move up or down at this moving area, when this lift motor is forward, this glass for vehicle window position moves up, and is counter-rotating when this lift motor, this glass for vehicle window position moves down, and this moving area has an anti-pinch zone;
One microcontroller, receive this front contact signal and this back contact signal, to detect this lift motor as forward or reverse, and produce the position signal represent this glass for vehicle window position and the pulse wave sampling number of times by this glass for vehicle window position every a sample time, judging whether an object is arranged on this glass for vehicle window in this anti-pinch zone, and produce a forward signal and an inverting signal; And
One relay unit, couple one and start electric power, so that this microcontroller electric power to be provided, and by this microcontroller for should lift motor electric power, and this relay unit receives this forward signal and this inverting signal, to switch accordingly a sense of current of this lift motor, to control this lift motor as forward or reverse;
Wherein, in this anti-pinch zone, during greater than an absolute anti-pinch number of times, this lift motor of this microprocessor control reverses when this lift motor forward and this pulse wave sampling number of times; Or this pulse wave sampling number of times difference of this lift motor forward and this position signal and continuous this last position signal is during greater than a relative anti-pinch number of times, and this lift motor of this microprocessor control reverses.
2. anti-squeeze window system as claimed in claim 1, wherein, this microcontroller comprises:
One decoding unit receives this front contact signal and this back contact signal, to produce a decoding message every this sample time;
One processing unit receives this decoding message, with according to this decoding message, produces this position signal, and calculates the number of repetition of this decoding message, produces this pulse wave sampling number of times, to compare with this absolute anti-pinch number of times;
One motor unit receives this position signal and this pulse wave sampling number of times, and produces accordingly this forward signal and this inverting signal, to control this lift motor action;
One switch element, receive one upwards signal, a downward signal, an automatically upper signal and automatically under signal, control signal to this motor unit to produce a direction every this sample time, and this motor unit is controlled signal according to direction and is produced this forward signal and this inverting signal, to control this lift motor action;
One checks the unit, receives this decoding message, this position signal and this pulse wave sampling number of times, to produce accordingly an abnormal signal; And
One timing unit, in order to detect this decoding unit, this processing unit, this motor unit, this checks whether unit and this switch element have in running.
3. anti-squeeze window system as claimed in claim 2, wherein, this motor unit has comparison list, with according to this absolute anti-pinch number of times of this position signal adjustment.
4. anti-squeeze window system as claimed in claim 3, wherein, this table of comparisons according to this lift motor electric power, when this glass for vehicle window moves down suffered resistance and a pair of should glass for vehicle window the anti-pinch power of position make.
5. anti-squeeze window system as claimed in claim 4, wherein, when this glass for vehicle window moves down, this motor unit during according to this lift motor electric power, this vehicle window glass movable suffered resistance and this anti-pinch power revise this table of comparisons.
6. anti-squeeze window system as claimed in claim 1, wherein, this relay unit comprises:
One voltage regulation unit is in order to stablize the voltage of this startup electric power;
One forward relay couples this voltage regulation unit, and according to this forward signal, controls this forward relay and connect this startup electric power or ground connection; And
One counter-rotating relay couples this voltage regulation unit, and according to this inverting signal, controls this counter-rotating relay and connect this startup electric power or ground connection;
Wherein, this forward relay and this counter-rotating relay can not connect this startup electric power or ground connection simultaneously, move up or down to control this glass for vehicle window.
7. anti-squeeze window system as claimed in claim 1, wherein, this anti-pinch of this moving area is regional, obtain the regional location in this anti-pinch zone with a predetermined ratio according to this position signal, wherein, this glass for vehicle window standard-sized sheet is the regional location that is positioned at this moving area 0%, and this glass for vehicle window complete shut-down is the regional location that is positioned at this moving area 100%.
8. anti-squeeze window system as claimed in claim 7, wherein, this anti-pinch zone of this moving area is positioned at the regional location of this moving area more than 38%.
9. anti-squeeze window system as claimed in claim 8, wherein, this moving area has more one without the anti-pinch zone, is positioned at this moving area 0% to the regional location that is no more than 38%.
10. anti-squeeze window system as claimed in claim 9, wherein, this moving area has more a pressurised zone, is positioned at the regional location of a short distance unit under this moving area 100%.
11. anti-squeeze window system as claimed in claim 10, wherein, the positive rotary speed of this lift motor of this pressurised zone is greater than this positive rotary speed of this lift motor without anti-pinch zone and this anti-pinch zone.
12. anti-squeeze window system as claimed in claim 7 wherein, is down to the regional location of this moving area 0% when this glass for vehicle window position, this position signal is made zero to reset.
13. anti-squeeze window system as claimed in claim 2, wherein, this decoding unit startup stand-by period after this lift motor starts is not received this front contact signal and this back contact signal, and this checks that the unit produces an emergent stopping signal to this relay unit, to stop this lift motor action.
14. anti-squeeze window system as claimed in claim 2, wherein, the Stop-wait time after this lift motor stops action, this microcontroller is with the temporary element of this position signal record to this motor unit, and when this startup electric power provides electrical power to this microcontroller next time, read this position signal.
15. anti-squeeze window system as claimed in claim 10, wherein, when this position signal is that negative, this position signal and this lift motor performance of a different dive, this decoding message produce wrong numerical value or this pulse wave sampling number of times when representing the too fast motor sampling number of times of this lift motor rotating speed, this checks that the unit produces this abnormal signal to this motor unit, and in this without in the anti-pinch zone, in this anti-pinch zone and judge whether an object is arranged on this glass for vehicle window in this pressurised zone.
16. anti-squeeze window system as claimed in claim 10, wherein, when this position signal is made zero and this glass for vehicle window complete shut-down, this short distance unit is reset.
17. anti-squeeze window system as claimed in claim 1, wherein, the phase difference between this front contact signal and this back contact signal is 90 degree.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104194271A CN103161379A (en) | 2011-12-15 | 2011-12-15 | Anti-pinch car window system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104194271A CN103161379A (en) | 2011-12-15 | 2011-12-15 | Anti-pinch car window system |
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| CN103161379A true CN103161379A (en) | 2013-06-19 |
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| CN2011104194271A Pending CN103161379A (en) | 2011-12-15 | 2011-12-15 | Anti-pinch car window system |
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| CN104514456A (en) * | 2013-09-27 | 2015-04-15 | 深圳市金证卡尔电子有限公司 | Vehicle window opening and closing control system and method |
| CN105317311A (en) * | 2014-06-24 | 2016-02-10 | 欧姆龙汽车电子株式会社 | Open-close body control apparatus |
| CN105682961A (en) * | 2013-10-29 | 2016-06-15 | 爱信精机株式会社 | Vehicular open/close member control device and control method |
| CN106567635A (en) * | 2016-10-21 | 2017-04-19 | 简式国际汽车设计（北京）有限公司 | Electric slide door anti-pinch method and system |
| CN110735577A (en) * | 2019-08-21 | 2020-01-31 | 施志义 | automatic switching method and system for anti-pinch and locked-rotor of electric vehicle window |
| CN115929144A (en) * | 2023-01-03 | 2023-04-07 | 重庆长安汽车股份有限公司 | Anti-pinch control method, device, equipment and storage medium |
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| CN110735577A (en) * | 2019-08-21 | 2020-01-31 | 施志义 | automatic switching method and system for anti-pinch and locked-rotor of electric vehicle window |
| CN115929144A (en) * | 2023-01-03 | 2023-04-07 | 重庆长安汽车股份有限公司 | Anti-pinch control method, device, equipment and storage medium |
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Application publication date: 20130619 |