CN109149868B - Anti-pinch motor corner signal detection mechanism and detection method thereof - Google Patents
Anti-pinch motor corner signal detection mechanism and detection method thereof Download PDFInfo
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- CN109149868B CN109149868B CN201811000517.5A CN201811000517A CN109149868B CN 109149868 B CN109149868 B CN 109149868B CN 201811000517 A CN201811000517 A CN 201811000517A CN 109149868 B CN109149868 B CN 109149868B
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- 238000001514 detection method Methods 0.000 title claims abstract description 201
- 230000007246 mechanism Effects 0.000 title claims abstract description 16
- 239000004020 conductor Substances 0.000 claims abstract description 4
- 238000003825 pressing Methods 0.000 claims description 24
- 230000004888 barrier function Effects 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 description 12
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- 238000013461 design Methods 0.000 description 5
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- 238000011161 development Methods 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 4
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/40—Safety devices, e.g. detection of obstructions or end positions
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
- E05Y2900/53—Type of wing
- E05Y2900/55—Windows
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
The invention provides a reliable, practical and low-cost anti-pinch motor corner signal detection mechanism and a detection method thereof, which are used for developing anti-pinch car windows or anti-pinch skylights of automobiles. The anti-pinch motor corner signal detection mechanism comprises an anti-pinch motor; the detection disc synchronously rotates with the anti-pinch motor, the detection disc is made of conductive materials, the detection disc is provided with a plurality of detection contacts, the detection contacts are distributed on a detection ring taking the center of the detection disc as the circle center at intervals, and the circle center angles corresponding to adjacent detection contacts are the same; the first terminal is abutted against the side surface of the detection disc and is electrically connected with the detection disc, the second terminal faces towards the detection ring of the detection disc, and the second terminal is discontinuously contacted with and electrically connected with the detection contact of the detection disc when the detection disc rotates; the power supply is connected with the first terminal, the signal detection unit is connected with the second terminal, and the power supply, the first terminal, the signal detection unit and the second terminal form a corner signal detection circuit.
Description
Technical Field
The invention relates to the technical field of anti-pinch motor systems, in particular to a detection technology for motor corner signals of an anti-pinch system of an automobile power window/skylight.
Background
With the development of intelligent technologies, especially the rapid advance of automotive electronic technologies, people's demands for automotive safety electronics are increasing, and particularly with respect to motor anti-pinch systems, such as power window/sunroof anti-pinch systems on automobiles, the proportion of such safety configurations in current automobile models is also on the rise. However, the anti-pinch system of the power window/skylight has various implementation schemes, and each scheme has advantages and disadvantages, and from the angle signal identification angle of the anti-pinch motor, the anti-pinch system mainly comprises two main categories of ripple anti-pinch and hall anti-pinch. The ripple anti-pinch is a low-cost scheme relatively, a special ripple circuit is adopted to identify motor ripples in the electrifying rotation phase-changing process of the direct-current brush motor so as to identify a corner signal of the motor, and further, the anti-pinch related software function development is realized, so that the precision and consistency requirements of the design, manufacture and general assembly processes of the motor and even a vehicle door system are higher, and the reliability of the system is difficult to guarantee. The Hall sensor integrated in the motor assembly is used for realizing corner signal acquisition in the rotating process of the motor by Hall anti-clamping, so that the reliability of system signal acquisition is improved, the complexity of system design is reduced, and the system cost is correspondingly increased.
Disclosure of Invention
The invention aims to provide a reliable, practical and low-cost anti-pinch motor corner signal detection mechanism and a detection method thereof, which are used for developing anti-pinch car windows or anti-pinch skylights of automobiles.
The invention discloses an anti-pinch motor corner signal detection mechanism, which comprises an anti-pinch motor, and is characterized in that the signal detection mechanism also comprises: the detection disc synchronously rotates with the anti-pinch motor, the detection disc is made of conductive materials, the detection disc is provided with a plurality of detection contacts, the detection contacts are distributed on a detection ring taking the center of the detection disc as the circle center at intervals, and the circle center angles corresponding to adjacent detection contacts are the same; the first terminal is abutted against the side surface of the detection disc and is electrically connected with the detection disc, and the second terminal faces towards the detection ring of the detection disc and is discontinuously contacted and electrically connected with the detection contact of the detection disc when the detection disc rotates; the power supply is connected with the first terminal, the signal detection unit is connected with the second terminal, and the power supply, the first terminal, the signal detection unit and the second terminal form a corner signal detection circuit.
The anti-pinch motor corner signal detection mechanism is adopted in the anti-pinch motor corner signal detection method, and specifically comprises the following steps:
a power supply is used for supplying power to the corner signal detection circuit; when the motor rotates, the second terminal is disconnected with the detection contact of detecting the dish and is switched on and make form discontinuous conducting state between first terminal, the second terminal, and signal detection unit calculates the turned angle that detects the dish according to corner signal detection circuit's the number of times that switches on to whether come to calculate anti-pinch motor according to the turned angle that detects the dish, corner signal detection circuit's single on-time variation condition and meet the barrier resistance, specifically as follows: when the rotation angle of the detection disc does not reach the preset maximum rotation angle, if the single conduction time of the rotation angle signal detection circuit exceeds the preset time, the anti-pinch motor is indicated to meet the resistance of the barrier.
The principle of the anti-pinch motor corner signal detection is as follows:
detect the dish and prevent pressing from both sides motor synchronous revolution, consequently detect the rotation condition of dish and prevent pressing from both sides the rotation condition of motor unanimous, prevent pressing from both sides the motor in the course of the work, generally at the uniform velocity pivoted, but when meetting the barrier, prevent that the rotation of pressing from both sides the motor will appear slowing down or even the stagnant situation, consequently change through the corner speed who prevents pressing from both sides the motor, just can judge and prevent pressing from both sides the motor and rotate whether meet the barrier at the in-process. Of course, when the window or the skylight moves to the limit position, the anti-pinch motor also stops rotating, so when judging whether an obstacle exists, the limit position must be excluded, and when the window or the skylight moves to the limit position, the anti-pinch motor must rotate to the preset maximum angle, so that whether the anti-pinch motor meets the obstacle area can be judged by combining the rotation angle and the rotation speed change of the detection disc. When the rotation angle of the detection disc does not reach the preset maximum rotation angle, the car window or the skylight is not moved to the limit position, and at the moment, if the single conduction time of the rotation angle signal detection circuit exceeds the preset time, the situation that the rotation of the detection disc (the anti-pinch motor) is slowed down or stopped is shown, namely the anti-pinch motor meets the obstacle.
Further, detect the dish and be connected with the rotor of preventing pressing from both sides the motor through the worm gear structure, detect and be equipped with insulation system between dish and the worm gear structure, it is inside to detect the dish and be located the casing of preventing pressing from both sides the motor. The worm and gear structure of the anti-pinch motor is used for installing the detection disc, so that the synchronous rotation of the detection disc and the anti-pinch motor can be ensured.
Specifically, the detection disc is a gear, the detection contacts are tooth parts located on the outer edge surface of the gear, the tooth parts can be various tooth shapes such as internal teeth, external teeth and internal and external teeth, and cost can be reduced by adopting a common gear structure. Of course, the detection disc may also be configured such that a protruding detection contact is disposed on the disc surface of the detection disc, or a hole-shaped detection contact is disposed on the disc surface of the touch detection disc, and these similar mechanical shape designs are designed based on the principle that the detection contact and the second terminal are intermittently connected, and are not described herein again.
Furthermore, one end of the first terminal is fixed on the inner side of an end cover of the anti-pinch motor, and the other end of the first terminal faces the detection disc and is abutted against the side face of the detection disc; one end of the second terminal is fixed on the inner side of an end cover of the anti-pinch motor, and the other end of the second terminal faces to a detection ring of the detection disc.
Furthermore, the first terminal and the second terminal are both made of elastic metal sheets, and the free ends of the first terminal and the second terminal tend to the direction of the detection plate by using elasticity, so that the free ends of the first terminal and the second terminal can be ensured to be in good contact with the detection plate.
Furthermore, the signal detection unit is one of a voltage detection unit and a current detection unit, and the connection or disconnection between the first terminal and the second terminal can cause the voltage or the current detected by the signal detection unit to change, so that the conduction state of the corner signal detection circuit can be deduced according to the change condition.
On the basis of keeping a worm gear mechanical structure of a common anti-pinch motor, the anti-pinch motor rotation angle detection device is additionally provided with the detection disc which rotates synchronously with the anti-pinch motor, and the motor is additionally provided with the corresponding terminal to detect the rotation condition of the detection disc, so that the rotation angle signal information in the rotation process of the motor is obtained, and a reliable, practical and low-cost motor rotation angle signal detection scheme is provided for the development of a motor anti-pinch control system.
Drawings
FIG. 1 is a structural diagram of an anti-pinch motor corner signal detection mechanism of the present invention.
FIG. 2 is a signal diagram of the anti-pinch motor corner signal detection method of the present invention.
The figures are numbered: 1. an anti-pinch motor; 2. detecting a disc; 3. detecting a contact; 4. a first terminal; 5. a second terminal; 6. and (4) end covers.
Detailed Description
The following describes embodiments of the present invention, such as shapes and structures of respective members, mutual positions and connection relationships between respective portions, and actions and operation principles of the respective portions, in further detail, with reference to the accompanying drawings.
Example 1:
the embodiment provides a reliable, practical and low-cost anti-pinch motor corner signal detection mechanism and a detection method thereof, and the mechanism is used for developing an automobile anti-pinch window or an anti-pinch skylight.
As shown in FIG. 1, the anti-pinch motor corner signal detection mechanism of the embodiment comprises an anti-pinch motor 1, and the key is that the signal detection mechanism further comprises: the detection disc 2 rotates synchronously with the anti-pinch motor 1, the detection disc 2 is made of conductive materials, the detection disc 2 is provided with a plurality of detection contacts 3, the detection contacts 3 are distributed on a detection ring taking the center of the detection disc 2 as the circle center at intervals, and the circle center angles corresponding to the adjacent detection contacts 3 are the same; a first terminal 4 abutting against the side surface of the detection disc 2 and electrically connected with the detection disc 2, and a second terminal 5 facing the detection ring of the detection disc 2, wherein the second terminal 5 is intermittently in contact with and electrically connected with the detection contact 3 of the detection disc 2 when the detection disc 2 rotates; and a power supply and signal detection unit (not shown in the figure), wherein the power supply is connected with the first terminal 4, the signal detection unit is connected with the second terminal 5, and the power supply, the first terminal 4, the signal detection unit and the second terminal 5 form a corner signal detection circuit.
In this embodiment, it is the gear to detect dish 2, detect contact 3 for being located the tooth portion of gear outer fringe face, detect dish 2 and be connected with the rotor of preventing pressing from both sides motor 1 through preventing pressing from both sides the worm gear structure of motor 1 from taking, detect and be equipped with insulation system between dish 2 and the worm gear structure, it is inside to detect dish 2 to be located the casing of preventing pressing from both sides motor 1. Utilize the worm gear structure of preventing pressing from both sides motor 1 self to install detection dish 2, can ensure to detect dish 2 and prevent pressing from both sides motor 1 synchronous revolution. The insulating mechanism can be a shaft sleeve made of insulating materials and arranged in the center of the detection disc 2, and the worm is clamped tightly by the shaft sleeve, so that the fixed connection and the electric isolation between the detection disc 2 and the worm are realized.
The first terminal 4 and the second terminal 5 are both made of elastic metal sheets, one end of the first terminal 4 is fixed on the inner side of an end cover 6 of the anti-pinch motor 1, and the other end (namely, a free end) is bent and faces the detection disc 2 and is abutted against the side surface of the detection disc 2; one end of the second terminal 5 is fixed on the inner side of the end cover 6 of the anti-pinch motor 1, the other end (namely, the free end) is bent and faces to a detection ring (namely, a circle where the tooth part of the gear is located) of the detection disc 2, the free ends of the first terminal 4 and the second terminal 5 can tend to the direction of the detection disc 2 by elasticity, and therefore the free ends of the first terminal 4 and the second terminal 5 can be in good contact with the detection disc 2.
As shown in fig. 1, the moving locus of the free end of the first terminal 4 with respect to the test tray 2 is a circle 7, and the moving locus of the free end of the second terminal 5 with respect to the test tray 2 is a circle 8, wherein the circle 8 has a larger diameter than the circle 7, and the test terminals 3 of the test tray 2 are distributed on the circle 8.
In this embodiment, the power supply is a 12V constant voltage power supply, the signal detection unit is a voltage detection unit, and the connection or disconnection between the first terminal 4 and the second terminal 5 will cause the voltage detected by the signal detection unit to change, and it can be concluded whether the corner signal detection circuit is connected or not according to the change.
The first terminal 4 is always electrically connected with the detection plate 2, when the detection terminal 3 (namely the tooth part of the gear) of the detection plate 2 is contacted with the second terminal 5, the second terminal 5 is electrically connected with the detection plate 2, at the moment, the high level of the power supply is transmitted to the signal detection unit through the first terminal 4, the detection plate 2 and the second terminal 5, and the signal detection unit obtains a high level signal; when the free end of the second terminal 5 is located in the gap between the adjacent detection terminals 3 (i.e. the teeth of the gear) of the detection plate 2, the second terminal 5 is not in contact with the detection plate 2, and thus the electrical connection with the detection plate 2 is broken, and at this time, the electrical connection between the first terminal 4 and the second terminal 5 is broken, and the signal detection unit cannot obtain a high-level signal. Therefore, the detection disc 2 can output a level signal to the signal detection unit when rotating a tooth-shaped angle under the driving of the anti-pinch motor 1, so that the motor corner information can be simply and accurately output.
The signal principle of the anti-pinch motor 1 rotation angle signal detection method is shown in fig. 2, when the first terminal 4 in the Case1 and the Case2 is not connected with a power supply, no matter whether the motor is electrified and rotated, a signal detection unit connected with the second terminal 5 does not have a high level signal; in cases 3 and 4, when the first terminal 4 is connected to the power supply, the voltage of the first terminal 4 is 12V, and when the motor is energized and rotated, the signal detection unit connected to the second terminal 5 can obtain a signal related to the rotation of the motor, the signal has a square wave shape, the duty cycle of the signal is related to the instantaneous speed of the rotation of the motor, when the signal is at a high level, it indicates that the second terminal 5 is in contact with the detection terminal of the detection plate 2, and when the signal is at a low level, it indicates that the second terminal 5 is not in contact with the detection terminal of the detection plate 2.
The anti-pinch motor 1 corner signal detection method of the embodiment adopts the anti-pinch motor 1 corner signal detection mechanism, and specifically comprises the following steps:
supplying power to the first terminal 4 by means of a power supply; when preventing pressing from both sides motor 1 and rotating, second terminal 5 is interrupted the contact with the detection contact 3 that detects dish 2 and switches on and make and form the state of switching on of discontinuity between first terminal 4 and the second terminal 5, and signal detecting element calculates the turned angle who detects dish 2 according to this number of times that switches on to whether prevent pressing from both sides motor 1 and meet the barrier resistance according to turned angle, the single on-time variation condition that detect dish 2, specifically as follows: when the rotation angle of the detection plate 2 does not reach the preset maximum rotation angle, if the single conduction time between the first terminal 4 and the second terminal 5 exceeds the preset time, it indicates that the anti-pinch motor 1 meets the obstacle resistance.
The principle of the anti-pinch motor 1 corner signal detection is as follows:
detect dish 2 and prevent pressing from both sides motor 1 synchronous revolution, consequently detect the rotation condition of dish 2 and prevent pressing from both sides motor 1 the rotation condition unanimous, prevent pressing from both sides motor 1 in the course of the work, generally at the uniform velocity pivoted, but when meetting the barrier, prevent that the rotation of pressing from both sides motor 1 will appear slowing down or even the situation of stagnation, consequently change through the corner speed who prevents pressing from both sides motor 1, just can judge and prevent pressing from both sides motor 1 and rotate the in-process and whether meet the barrier. Of course, when the window or the skylight moves to the limit position, the anti-pinch motor 1 also stops rotating, so when judging whether there is an obstacle, the limit position must be excluded, and when the window or the skylight moves to the limit position, the anti-pinch motor 1 must rotate by a preset maximum angle, so that whether the anti-pinch motor 1 meets the obstacle area can be judged by combining the rotation angle and the rotation speed change of the detection disc 2. When the rotation angle of the detection disc 2 does not reach the preset maximum rotation angle, the car window or the skylight is not moved to the limit position, and at the moment, if the single conduction time of the rotation angle signal detection circuit exceeds the preset time, the situation that the rotation of the detection disc 2 (the anti-pinch motor 1) is slowed down or stopped is shown, namely the anti-pinch motor 1 meets an obstacle.
Assume T s the angle s (t) = k the motor has rotated over the time interval s (t) = k（T）K, wherein K（T）The number of high level signals output to the signal detection unit by the second terminal 5 in T s time intervals, wherein K is the total number of teeth on the gear; the power window/skylight anti-pinch system can calculate T s the position change of the window/skylight in the interval according to the system structure and the rotation ratio of the window/skylight, and further calculate the motor rotation speed change (corresponding to the moving speed of the skylight/window). The position of the car window/skylight in the running process can be judged and controlled through the position change; whether barrier resistance exists or not can be detected through speed change, so that T s interval speed is greatly changed, and core control strategy development of the power window/skylight anti-pinch system can be realized by combining other control strategy judgment algorithms and specific implementation requirements in the anti-pinch system.
The invention borrows the inherent worm and gear structure of the anti-pinch motor, provides the detection method of the corner signal/rotating speed signal of the anti-pinch motor, is simple and reliable, is easy to be applied in large batch, and can greatly improve the precision of the corner signal/rotating speed signal on the premise of fully ensuring the reliability; the output corner signal keeps the regular square wave characteristic of the Hall sensor, the difficulty of anti-pinch software development at the rear end is greatly reduced, the anti-pinch motor design scheme is low in cost and high in reliability, the new requirements of an intelligent anti-pinch system on an automobile control system in the era are met, and a larger space is provided for the design of an automobile complex electrical appliance system.
The invention has been described in connection with the accompanying drawings, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of the components set forth in the following description, as long as the invention is capable of being practiced without modification in any way whatsoever, and is capable of other applications without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides a prevent pressing from both sides motor corner signal detection method, the motor corner signal detection mechanism is prevented pressing from both sides including preventing pressing from both sides the motor that adopts to and:
the detection disc synchronously rotates with the anti-pinch motor, is made of a conductive material and is provided with a plurality of detection contacts;
the first terminal is abutted against the side surface of the detection disc and is electrically connected with the detection disc, and the second terminal faces towards the detection ring of the detection disc and is discontinuously contacted and electrically connected with the detection contact of the detection disc when the detection disc rotates;
the power supply is connected with the first terminal, the signal detection unit is connected with the second terminal, and the power supply, the first terminal, the signal detection unit and the second terminal form a corner signal detection circuit;
the detection device is characterized in that the detection contacts are distributed on a detection ring taking the center of the detection disc as the circle center at intervals, and the corresponding circle center angles of adjacent detection contacts are the same;
the corner signal detection method comprises the following steps: a power supply is used for supplying power to the corner signal detection circuit; when the motor rotates, the second terminal is disconnected with the detection contact of detecting the dish and is switched on and make form discontinuous conducting state between first terminal, the second terminal, and signal detection unit calculates the turned angle that detects the dish according to corner signal detection circuit's the number of times that switches on to whether come to calculate anti-pinch motor according to the turned angle that detects the dish, corner signal detection circuit's single on-time variation condition and meet the barrier resistance, specifically as follows: when the rotation angle of the detection disc does not reach the preset maximum rotation angle, if the single conduction time of the rotation angle signal detection circuit exceeds the preset time, the anti-pinch motor is indicated to meet the resistance of the barrier.
2. The anti-pinch motor corner signal detection method according to claim 1, characterized in that the detection disc is connected with a rotor of the anti-pinch motor through a worm and gear structure, an insulation structure is arranged between the detection disc and the worm and gear structure, and the detection disc is positioned inside a shell of the anti-pinch motor.
3. The anti-pinch motor corner signal detection method according to claim 2, wherein the detection plate is a gear, and the detection contacts are teeth on an outer edge surface of the gear.
4. The anti-pinch motor corner signal detection method according to claim 2, wherein one end of the first terminal is fixed to the inner side of an end cover of the anti-pinch motor, and the other end of the first terminal faces the detection disc and abuts against the side face of the detection disc; one end of the second terminal is fixed on the inner side of an end cover of the anti-pinch motor, and the other end of the second terminal faces to a detection ring of the detection disc.
5. The anti-pinch motor corner signal detection method of claim 4, wherein the first terminal and the second terminal are made of resilient metal sheets.
6. The anti-pinch motor rotation angle signal detection method according to claim 1, 2, 3, 4 or 5, wherein the signal detection unit is one of a voltage detection unit and a current detection unit.
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| CN201811000517.5A CN109149868B (en) | 2018-08-30 | 2018-08-30 | Anti-pinch motor corner signal detection mechanism and detection method thereof |
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| CN201811000517.5A CN109149868B (en) | 2018-08-30 | 2018-08-30 | Anti-pinch motor corner signal detection mechanism and detection method thereof |
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| CN112096210B (en) * | 2020-10-13 | 2022-05-17 | 青岛建邦汽车科技股份有限公司 | Door window lift anti-pinch device and vehicle |
| CN118920780B (en) * | 2024-10-10 | 2025-01-17 | 浙江吉利控股集团有限公司 | Motor, vehicle window assembly, vehicle door assembly and vehicle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101173864A (en) * | 2006-10-31 | 2008-05-07 | 三菱重工业株式会社 | Method and device for detecting tooth matching angle of gear |
| CN101418660A (en) * | 2007-10-26 | 2009-04-29 | 比亚迪股份有限公司 | Anti-clipping system for electric window |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6674191B2 (en) * | 2001-03-14 | 2004-01-06 | Asmo Co., Ltd. | Motor actuator control system and method for controlling motor actuator |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101173864A (en) * | 2006-10-31 | 2008-05-07 | 三菱重工业株式会社 | Method and device for detecting tooth matching angle of gear |
| CN101418660A (en) * | 2007-10-26 | 2009-04-29 | 比亚迪股份有限公司 | Anti-clipping system for electric window |
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