CN202450928U - Anti-pinch control device of sensorless power window - Google Patents
Anti-pinch control device of sensorless power window Download PDFInfo
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- CN202450928U CN202450928U CN2011205402277U CN201120540227U CN202450928U CN 202450928 U CN202450928 U CN 202450928U CN 2011205402277 U CN2011205402277 U CN 2011205402277U CN 201120540227 U CN201120540227 U CN 201120540227U CN 202450928 U CN202450928 U CN 202450928U
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Abstract
The utility model discloses an anti-pinch control device of a sensorless power window. The device comprises an electric window regulator, wherein the electric window regulator is connected with a motor drive circuit, the electric window regulator is also connected with a singlechip, the singlechip is connected with a bus through a bus interface, and the power of the singlechip, the electric window regulator and the bus interface is supplied by a power module. The electric window regulator is controlled by the singlechip, and the rotating direction of a motor is controlled by controlling the direction of voltage on the direct current motor. The electric current passing the regulator motor is determined by the resistance encountered by the window glass in an ascending or descending process, the electric current passing the motor is sampled, and then the change of the resistance in the ascending and descending processes of the window glass can be monitored by monitoring the electric current so as to execute corresponding operation. The overcurrent protection, the overvoltage protection and the overheat protection of the motor can be realized by the singlechip, and the condition of obstruction encountered by the window glass in the ascending process can be automatically identified by monitoring the electric current, so that the motor is controlled to rotate reversely to prevent jamming hurt and damage.
Description
Technical field
The utility model relates to car electrics control technology field, is specifically related to a kind of no sensor power windows anti-pinch control device.
Background technology
In order to increase the comfortableness of automobile; The vehicle window of a lot of automobiles has all been abandoned the manual hoisting device of crank type; The general electric glass lifter of all using push button instead, mostly the electric glass lifter that general car is used is to be made up of motor, reducer, conductor rope, guide strip, glass installation bracket etc., and each vehicle window is installed a motor; Motor adopts the reversibility permanent magnet DC motor of built-in reducer; Field coil is arranged in the motor, and the direction that is added in voltage on the coil through control is controlled rotating and reverse of motor, realizes the rising and the decline of glass for vehicle window.The driver just press the button can the control gate window glass up-down, very convenient.But most vehicle window control function automatically not, in the process of car window switch, if the driver does not have other occupants' hand or object also at window, the glass that is just risen easily crushes or damages.For the sake of security, now a lot of passenger cars all adopted electronic anti-pinch vehicle window (Anti2PinchWindowLifter, APWL).The Europe and the U.S. is legislation successively, has confirmed that APWL is the standard configuration of automobile, to promote traffic safety and hommization degree.At present the Chinese government to the legislation of APWL also in the investigation process.Existing APWL has installed Hall element to come induction machine whether to receive resistance on the motor of glass-frame riser, the sensor of other optics perhaps has been installed.This power windows need be installed extra sensor at existing simple glass lifter.
Summary of the invention
To defective or deficiency that existing anti-pinching car window device exists, the purpose of the utility model is, a kind of no sensor power windows anti-pinch control device is provided.
In order to realize above-mentioned task, the utility model is taked following technical solution:
A kind of no sensor power windows anti-pinch control device; Comprise electric glass lifter; Be connected with motor-drive circuit on the electric glass lifter, it is characterized in that, on electric glass lifter, also be connected with single-chip microcomputer; Single-chip microcomputer is connected with bus through EBI, and single-chip microcomputer, electric glass lifter and EBI are supplied power by power module.
Other characteristics of the utility model are:
Described single-chip microcomputer is selected the PIC18F2480 single-chip microcomputer.
Described motor-drive circuit contains analog line driver MC33486.
The no sensor power windows anti-pinch control device of the utility model adopts the Single-chip Controlling electric glass lifter, is added in the rotation direction that voltage direction on the direct current generator is controlled motor through control.Glass rise or the decline process in the resistance size decision that the runs into size through the lifter current of electric, the electric current that passes through through the sampling motor, thus monitoring current just can be monitored the situation of change of resistance in the glass lifting process and carried out accordingly and operate.Single-chip microcomputer can be realized overcurrent, overvoltage and the overtemperature protection to motor, and discerns the situation that runs into obstacle in the glass rising on the way automatically through monitoring current, and then controls motor and reverse, and prevents to crush or damage.
Description of drawings
Fig. 1 is the hardware block diagram of the utility model.
Fig. 2 is the current sample block diagram.
Fig. 3 is an electric current variation diagram in the vehicle window uphill process.
Fig. 4 is an electric current variation diagram in the vehicle window decline process.
Fig. 5 is the electric current variation diagram that meets obstructions in the vehicle window uphill process.
Below in conjunction with accompanying drawing and embodiment the utility model is done further to specify.
The specific embodiment
Referring to Fig. 1; Present embodiment provides a kind of no sensor power windows anti-pinch control device; Comprise electric glass lifter, be connected with motor-drive circuit on the electric glass lifter, on electric glass lifter, also be connected with single-chip microcomputer; Single-chip microcomputer is connected with bus through EBI, and single-chip microcomputer, electric glass lifter and EBI are supplied power by power module.
In the present embodiment, single-chip microcomputer adopts the PIC18F2480 single-chip microcomputer, and this single-chip microcomputer chip integration has become A/D, PWM, CAN controller, URAT, functions such as SPI.
Motor-drive circuit contains analog line driver MC33486 chip, and the twocouese running of Car window electric machine adds the H bridge control that two MOSFET form by power model MC33486, and the internal resistance of two MOSFET, temperature rise, voltage all are complementary with MC33486.
Electric glass lifter can be realized following function:
(1) press vehicle window operating key (the button time is less than 300ms), vehicle window rises to the top automatically or drops to the end, presses same switch any key, and vehicle window stops to rise or descending;
(2) vehicle window key (the button time is greater than 300ms) is pressed in time-delay, and vehicle window rises or descends, and discharges the button vehicle window in the process of rising or falling and promptly stops;
Automatically stop the Car window electric machine outage when (3) vehicle window runs to position, top or position, the end;
(4) if glass for vehicle window runs into certain resistance in the process that rises automatically can stop automatically, the segment distance that descends prevents that the accident of people or article from crushing.
Single-chip microcomputer PIC18F2480 chip integration has become a lot of functions, supports CAN communication and serial communication, can online programming.Analog line driver in the motor-drive circuit not only has the wide-range voltage input simultaneously, big capacity, and also have current-mirror function.These two kinds of components and parts combine; Electric current through the monitoring Car window electric machine is monitored the obstacle situation that vehicle window runs into; On the basis of the existing power windows that does not have a pinch resistant functionality, need not add any sensor, be easy to just can realize the pinch resistant functionality of power windows.
Pinch resistant functionality is to detect the electric current variation of motor through current sampling circuit; Current sample block diagram such as Fig. 2; Current signal is transferred to single-chip microcomputer PIC18F2480; Single-chip microcomputer carries out the A/D conversion, will change back signal input power driver MC33486, and analog line driver MC33486 controls the rotation direction that the sense of current that is added on the direct current generator is controlled motor.
Vehicle window is in the free lifting process and when uphill process runs into obstacle, and the electric current of controlling motor through electric glass lifter changes respectively like Fig. 3, Fig. 4, shown in Figure 5.
Below be the workflow of the no sensor power windows anti-pinch control device of the utility model:
Vehicle window starts employing PWM mode and carries out; Frequency is 2kHz, and totally 10 sections, dutycycle progressively rises to 100% from 0%; Every section 10 pulses; 5ms altogether, be 50ms 10 periods start-up times, when directly adding
to direct current generator; Start steadily, it is good to start rapidity.In the vehicle window start-up course; Because the electric current of motor changes greatly; Analog line driver MC33486 in the motor-drive circuit can't realize pinch resistant functionality through detecting change in current, but this very short during this period of time (50ms), so need not to realize pinch resistant functionality during this period.
When vehicle window stops, detecting current of electric through analog line driver MC33486, when electric current surpassed the certain amplitude of its running current, single-chip microcomputer sent instruction, passes to analog line driver through electric glass lifter and makes motor stop.
Electric glass lifter must comprise two kinds of functions:
(1) can judge whether to run into obstacle;
(2) can judge that glass is in rising or has risen to the top after running into obstacle.
Can know that through comparison diagram 3, Fig. 5 when vehicle window met obstructions, the electric current of motor all sharply increased from running current, judged whether to run into obstacle through the current average that detects motor in rising to top and uphill process.When the current average
determine obstacles encountered during ascent or rise to the top.The size of regulating
can be regulated the size of rising anti-pinch power.
Simultaneously comparison diagram 3, Fig. 5 can know, in the vehicle window uphill process, meet obstructions and to rise to the speed that current of electric increases under two kinds of situation of top different for vehicle window, and the former electric current changes fast.Therefore distinguish both of these case through the slope of judging the current of electric variation.In
vehicle window uphill process, meet obstructions; Single-chip Controlling intelligent power driver sends instruction; The motor counter-rotating, vehicle window stops after dropping to a segment distance.When
Single-chip Controlling electric glass lifter; Make analog line driver send and make motor stop, vehicle window is closed.
Claims (3)
1. no sensor power windows anti-pinch control device; Comprise electric glass lifter; Be connected with motor-drive circuit on the electric glass lifter, it is characterized in that, on electric glass lifter, also be connected with single-chip microcomputer; Single-chip microcomputer is connected with bus through EBI, and single-chip microcomputer, electric glass lifter and EBI are connected power module.
2. no sensor power windows anti-pinch control device as claimed in claim 1 is characterized in that, described single-chip microcomputer is selected the PIC18F2480 single-chip microcomputer.
3. no sensor power windows anti-pinch control device as claimed in claim 1 is characterized in that described motor-drive circuit contains analog line driver MC33486.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205402277U CN202450928U (en) | 2011-12-15 | 2011-12-15 | Anti-pinch control device of sensorless power window |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205402277U CN202450928U (en) | 2011-12-15 | 2011-12-15 | Anti-pinch control device of sensorless power window |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202450928U true CN202450928U (en) | 2012-09-26 |
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ID=46866798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205402277U Expired - Fee Related CN202450928U (en) | 2011-12-15 | 2011-12-15 | Anti-pinch control device of sensorless power window |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202450928U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468495A (en) * | 2018-03-12 | 2018-08-31 | 北京新能源汽车股份有限公司 | A kind of vehicle window control device and automobile |
| CN109116153A (en) * | 2018-08-16 | 2019-01-01 | 杭州容大智造科技有限公司 | A kind of device and method detecting outside rear-view mirror for vehicle |
| CN111206838A (en) * | 2020-02-26 | 2020-05-29 | 马瑞利汽车电子(广州)有限公司 | Ripple anti-pinch position compensation method and device |
-
2011
- 2011-12-15 CN CN2011205402277U patent/CN202450928U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468495A (en) * | 2018-03-12 | 2018-08-31 | 北京新能源汽车股份有限公司 | A kind of vehicle window control device and automobile |
| CN109116153A (en) * | 2018-08-16 | 2019-01-01 | 杭州容大智造科技有限公司 | A kind of device and method detecting outside rear-view mirror for vehicle |
| CN111206838A (en) * | 2020-02-26 | 2020-05-29 | 马瑞利汽车电子(广州)有限公司 | Ripple anti-pinch position compensation method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20121215 |