CN111350438A

CN111350438A - Accurate positioning vehicle window ripple anti-pinch circuit, device and method and vehicle

Info

Publication number: CN111350438A
Application number: CN202010343803.2A
Authority: CN
Inventors: 王保成
Original assignee: Nanjing Tacking Automobile Electronic Co ltd
Current assignee: Nanjing Tacking Automobile Electronic Co ltd
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2020-06-30

Abstract

The application relates to the field of vehicle electronic control, in particular to an accurate positioning vehicle window ripple anti-pinch circuit, device, method and vehicle, wherein the circuit comprises: the driving current acquisition module is used for acquiring the driving current of the vehicle window motor; a control module for obtaining the value and the number of ripples of the driving current to determine the position of the window glass, the control module being configured to: and when the position belongs to a preset stop area, controlling the window motor to stop rotating, and controlling the driving current acquisition module to be disconnected with the window motor within a preset time after the window motor stops rotating. This application stops after window motor stops, control module control disconnection drive current collection module with window motor's connection for the relay resilience of disconnection in-process can not exert an influence to ripple current's wave form, thereby has improved the ripple and has prevented pressing from both sides the positioning accuracy and the reliability of module.

Description

Accurate positioning vehicle window ripple anti-pinch circuit, device and method and vehicle

Technical Field

The application relates to the field of vehicle electronic control, in particular to an accurate positioning vehicle window ripple anti-pinch circuit, device and method and a vehicle.

Background

Along with the development of vehicle and the improvement of people's intelligent level of living, the door window has the intelligence and prevents pressing from both sides the function and become a trend, and the technique that the vehicle that has door window intelligence in the existing market mainly adopts includes that hall prevents pressing from both sides and the ripple prevents pressing from both sides two kinds.

The ripple anti-pinch module in the traditional vehicle ripple anti-pinch system is generally driven by a relay, because a motor is an inductive load and the driving current of a vehicle window is large, the relay can generate large reverse electromotive force at a relay port at the moment of disconnection, further arcing is caused, the relay can not be disconnected immediately, and three to four times of rebounds can be generated, namely the relay can be stabilized in a disconnected state after going through the process of being closed and then disconnected after three to four times of disconnection, so that the control system can hardly distinguish the current fluctuation caused by the rebounding of the relay from the current ripple generated during the reversing of the motor, the ripple obtained based on the driving current of the vehicle window motor is seriously distorted and deformed, the superposed waveform can not be used as the basis for judging the position of the vehicle window any more, although the ripple anti-pinch module of some vehicles compensates through a software algorithm, the superposed waveform can not be avoided, finally, the ripple anti-pinch positioning precision and reliability are lower than those of the Hall anti-pinch module.

Disclosure of Invention

Based on this, it is necessary to provide a precise positioning vehicle window ripple anti-pinch circuit, device, method and vehicle which can complete the collection of ripples before the elastic piece of the relay rebounds, thereby improving the positioning precision and reliability of the ripple anti-pinch module.

An aspect of the application provides a circuit is prevented pressing from both sides by accurate positioning door window ripple, includes:

the driving current acquisition module is connected with the vehicle window motor and used for acquiring the driving current of the vehicle window motor;

the control module is connected with the driving current acquisition module and used for acquiring the value of the driving current and the number of ripples to judge the position of the car window glass,

the control module is configured to: when the position belongs to a preset stop area, controlling the window motor to stop rotating, and controlling to disconnect the connection between the driving current acquisition module and the window motor within a preset time after the window motor stops rotating;

and the window motor driving module is used for driving the window motor to rotate forwards, reversely or stop rotating based on the control of the control module.

In the accurate positioning car window ripple anti-pinch circuit in the embodiment, the control module in the vehicle can acquire the position of the car window glass by setting the driving current acquisition module for acquiring the car window motor based on the driving current and the ripple number, when the position of the car window glass belongs to a preset stop area, the control module can control the car window motor to stop rotating, and in a preset time after the car window motor stops rotating, the control module controls to disconnect the connection between the driving current acquisition module and the car window motor, namely, under the condition that the car window motor stops and finishes the acquisition of the driving current of the car window motor, the control module controls to disconnect the connection between the driving current acquisition module and the car window motor, and the acquisition of the driving current of the car window motor is finished at the moment, therefore, the drive current acquisition module and the in-process of window motor disconnection, the relay resilience can not influence the wave form of ripple current to the positioning accuracy and the reliability of ripple anti-pinch module have been improved.

In one embodiment, the window motor driving module includes:

the first switch unit is connected in series between an electric connection path of the window motor and a window power supply and used for connecting the window motor and the window power supply based on a trigger starting signal of a user to the window motor;

the second switch unit is connected in series between the electric connection paths of the window motor and the first switch unit and is used for realizing the forward rotation connection between the window motor and the window power supply based on the acquired forward rotation control signal action sent by the control module;

and the third switch unit is connected in series between the electric connection paths of the window motor and the second switch unit and is used for realizing reverse connection between the window motor and the window power supply based on the acquired reverse control signal action sent by the control module.

In the circuit is prevented pressing from both sides by accurate positioning door window ripple in above-mentioned embodiment, through window motor with set up first switch element between the electric connection route of window power for it is right based on the user window motor's the start signal that triggers connects window motor with the window power, and do not trigger under the start signal's the condition, first switch element disconnection window motor with the connection of window power can improve effectively the circuit is prevented pressing from both sides by accurate positioning door window ripple's energy-conserving performance. The second switch unit is connected in series between the electric connection paths of the window motor and the first switch unit and is used for realizing the forward rotation connection between the window motor and the window power supply based on the acquired forward rotation control signal action sent by the control module. And a third switch unit is connected in series between the electric connection paths of the window motor and the second switch unit, and the third switch unit is used for realizing reverse connection between the window motor and the window power supply based on the acquired reverse control signal action sent by the control module.

In one embodiment, the first switch unit comprises a first electrifying coil, and a first connecting terminal, a second connecting terminal and a third connecting terminal which are isolated from each other; the first electrifying coil is electrified based on the trigger starting signal to disconnect the third connecting terminal and the second connecting terminal and connect the first connecting terminal and the third connecting terminal, so that the vehicle window power supply supplies power to the vehicle window motor through the first connecting terminal and the third connecting terminal.

In the circuit is prevented pressing from both sides by accurate positioning door window ripple in above-mentioned embodiment, include first circular telegram coil through setting up first switch unit, and the first connecting terminal, second connecting terminal and the third connecting terminal of mutual isolation, the second connecting terminal with third connecting terminal is in the normally closed state, first connecting terminal with third connecting terminal is in the normally open state. Under the condition that the first electrifying coil is not electrified, the current flowing through the window motor flows into the ground after sequentially flowing through the third connecting terminal and the second connecting terminal, so that an electric connection path between the window motor and the window power supply is in a normally open state; when the first electrifying coil is electrified based on the trigger starting signal, the first connecting terminal and the third connecting terminal are connected, meanwhile, the second connecting terminal and the third connecting terminal are disconnected, and the power supply of the vehicle window motor is achieved through the first connecting terminal and the third connecting terminal. Under the condition that a triggering starting signal of the window motor is not acquired by a user, the first switch unit is disconnected with the window motor and the window power supply, so that the energy-saving performance of the accurate positioning window ripple anti-pinch circuit can be effectively improved.

In one embodiment, the second switch unit comprises a first sub-switch unit and a second sub-switch unit which are connected in series, the first sub-switch unit is connected in series between the window motor and an electric connection path of the first switch unit, the second sub-switch unit is connected in series between the control module and a connection path of the first sub-switch unit, and the second sub-switch unit is used for changing the connection state of the first sub-switch unit based on the action of a forward rotation control signal sent by the control module, so that forward rotation connection between the window motor and the power supply is realized. The second sub-switch unit is arranged to realize action based on a forward rotation control signal sent by the control module, so that the connection state of the first sub-switch unit is changed, the vehicle window motor is connected with the vehicle window power supply in a forward rotation mode, the separation of forward rotation control and reverse rotation control of the vehicle window motor is realized, the stability of circuit operation is improved, and the complexity of circuit design is reduced.

In one embodiment, the third switch unit comprises a third sub-switch unit and a fourth sub-switch unit which are connected in series, the third sub-switch unit is connected in series between the window motor and the electric connection path of the first sub-switch unit, and the fourth sub-switch unit is connected in series between the control module and the connection path of the third sub-switch unit, and is used for changing the connection state of the third sub-switch unit based on the action of a reverse control signal sent by the control module, so as to realize reverse connection between the window motor and the power supply. The fourth sub-switch unit is arranged to realize action based on a reverse rotation control signal sent by the control module, so that the connection state of the third sub-switch unit is changed, the vehicle window motor is connected with the vehicle window power supply in a reverse rotation mode, the separation of the forward rotation control and the reverse rotation control of the vehicle window motor is realized, the stability of circuit work is improved, and the complexity of circuit design is reduced.

In one embodiment, the first sub-switch unit comprises a second electrified coil, and a fourth connecting terminal, a fifth connecting terminal and a sixth connecting terminal which are isolated from each other; the second electrified coil is used for being electrified based on the forward rotation control signal, and the connection between the sixth connecting terminal and the fifth connecting terminal is disconnected, so that the vehicle window power supply supplies power to the vehicle window motor through the fourth connecting terminal and the sixth connecting terminal.

In the accurate positioning car window ripple anti-pinch circuit in the above embodiment, include the second electrified coil through setting up first sub-switch unit, and fourth connecting terminal, fifth connecting terminal and the sixth connecting terminal of mutual isolation, the fifth connecting terminal with the sixth connecting terminal is in normally closed state, the fourth connecting terminal with the sixth connecting terminal is in normally open state. Under the condition that the second electrified coil is not electrified, the current flowing through the window motor flows into the ground after sequentially flowing through the sixth connecting terminal and the fifth connecting terminal, so that an electric connection path between the window motor and the window power supply is in a normally open state; work as the second electricity coil receives second sub switch unit's influence circular telegram back, makes fourth connecting terminal with sixth connecting terminal connects, simultaneously fifth connecting terminal with sixth connecting terminal disconnection realizes the window power via fourth connecting terminal with sixth connecting terminal to the window motor power supply, promptly, the electric current that the window power flows out flows through behind the third switch unit, flow through in proper order behind the window motor the fourth connecting terminal with sixth connecting terminal flows to ground, realizes the corotation drive circuit of window motor connects.

In one embodiment, the third sub-switch unit comprises a third energizing coil, and a seventh connecting terminal, an eighth connecting terminal and a ninth connecting terminal which are isolated from each other; the third energizing coil is used for being electrified based on the reversal control signal, and the ninth connecting terminal and the eighth connecting terminal are disconnected, so that the vehicle window power supply supplies power to the vehicle window motor through the seventh connecting terminal and the ninth connecting terminal.

In the accurate positioning door window ripple anti-pinch circuit in above-mentioned embodiment, include third through setting up the third sub-switch unit and electric coil, and seventh connecting terminal, eighth connecting terminal and the ninth connecting terminal of mutual isolation, eighth connecting terminal with the ninth connecting terminal is in normally closed state, seventh connecting terminal with the ninth connecting terminal is in normally open state. Under the condition that the third energizing coil is not energized, the current flowing through the window motor flows into the ground after sequentially flowing through the ninth connecting terminal and the eighth connecting terminal, so that an electric connection path between the window motor and the window power supply is in a normally open state; work as third circular telegram coil receives fourth sub switch unit's influence circular telegram back, makes seventh connecting terminal with ninth connecting terminal connects, simultaneously eighth connecting terminal with ninth connecting terminal disconnection realizes the window power via seventh connecting terminal with ninth connecting terminal to the window motor power supply, promptly, the electric current that the window power flowed out flows through behind the third switch unit, flow through in proper order behind the window motor the seventh connecting terminal with flow to ground behind the ninth connecting terminal, realize the reversal drive circuit of window motor connects.

In one embodiment, the second sub-switching unit comprises a transistor Q1, a current-limiting resistor R4 and a bias resistor R5, wherein the base of the transistor Q1 is connected to the control module through the current-limiting resistor R4, and the emitter of the transistor Q1 is grounded; one end of the bias resistor R5 is connected between the current-limiting resistor R4 and the base electrode of the triode Q1, and the other end is grounded.

In the accurate positioning door window ripple anti-pinch circuit in above-mentioned embodiment, triode Q1 is receiving under the high-frequency signal drive that control module sent, triode Q1 switches on, makes the second electrified circle circular telegram, makes fourth connecting terminal with sixth connecting terminal connects, simultaneously fifth connecting terminal with sixth connecting terminal disconnection realizes the window power via fourth connecting terminal with sixth connecting terminal to the window motor power supply, promptly, the electric current that the window power flows out is flowing through behind the third switch unit, flow through in proper order the window motor the fourth connecting terminal with flow to the ground behind the sixth connecting terminal, realize the corotation drive circuit of window motor connects.

In one embodiment, the fourth sub-switching unit comprises a transistor Q2, a current-limiting resistor R7 and a bias resistor R9, wherein the base of the transistor Q2 is connected to the control module through the current-limiting resistor R7, and the emitter of the transistor Q2 is grounded; one end of the bias resistor R9 is connected between the current-limiting resistor R7 and the base electrode of the triode Q2, and the other end is grounded.

In the circuit is prevented pressing from both sides by accurate positioning door window ripple in above-mentioned embodiment, triode Q2 is receiving under the high-frequency signal drive that control module sent, triode Q2 switches on, makes the circular telegram of third tee electric coil, makes seventh connecting terminal with ninth connecting terminal connects, simultaneously eighth connecting terminal with ninth connecting terminal disconnection realizes the window power via seventh connecting terminal with ninth connecting terminal to the window motor power supply, promptly, the electric current that the window power flows out is flowing through behind the second switch unit, flow through in proper order window motor ninth connecting terminal with flow to ground behind the seventh connecting terminal, realize window motor's reversal drive circuit connects.

In one embodiment, the driving current collecting module includes:

one end of the first sampling resistor is connected with the vehicle window motor, the other end of the first sampling resistor is grounded, the driving current of the vehicle window motor in the forward rotation flows to the ground after flowing through the first sampling resistor, and the first sampling resistor is used for collecting the driving current of the vehicle window motor in the forward rotation;

one end of the second sampling resistor is connected with the vehicle window motor, the other end of the second sampling resistor is grounded, the driving current when the vehicle window motor rotates reversely flows to the ground after flowing through the second sampling resistor, and the second sampling resistor is used for collecting the driving current when the vehicle window motor rotates reversely;

the positive input end of the proportional control amplifier is connected with the input end of the second sampling resistor, the negative input end of the proportional control amplifier is connected with the input end of the first sampling resistor, and the output end of the proportional control amplifier is connected with the control module.

In the accurate positioning car window ripple anti-pinch circuit in the embodiment, the first sampling resistor is connected in series in the forward rotation driving loop of the car window motor, so that the driving current in the forward rotation of the car window motor flows to the ground after flowing through the first sampling resistor, and the driving current in the forward rotation of the car window motor can be collected based on the first sampling resistor. Similarly, a second sampling resistor is connected in series in a reverse rotation driving loop of the window motor, so that the driving current when the window motor is reversed flows to the ground after flowing through the second sampling resistor, and the driving current when the window motor is reversed can be acquired based on the second sampling resistor. Through setting up the proportional control amplifier, carry for the controller after amplifying the sampling current who acquires, be convenient for amplify the ripple signal in the window motor drive current who acquires to improve the degree of accuracy and the precision that the ripple signal acquireed, and then improved the accuracy and the reliability that the ripple prevented pressing from both sides.

In one embodiment, the proportional regulating amplifier comprises:

the output end of the amplifier is connected with the control module, and the positive input end of the amplifier is connected with the reverse current output end of the vehicle window motor;

a first proportional regulating resistor R15 connected in series between the output of the amplifier and the input of the control module;

and the second proportional regulating resistor R11 is connected between the negative input end of the amplifier and the output end of the amplifier in parallel.

In the accurate positioning car window ripple anti-pinch circuit in the above embodiment, through set up the amplifier in the proportional control amplifier the output of amplifier with first proportional control resistance R15 establishes ties between the input of control module, parallelly connected second proportional control resistance R11 between the negative input of amplifier and the output makes the amplification factor of proportional control amplifier by first proportional control resistance R15 with the resistance value direct calculation of second proportional control resistance R11 obtains, has reduced the complexity to the car window motor sampling current amplification, and this operational amplifier circuit function is reliable and with low costs.

In one embodiment, the driving current collecting module further includes a dc power supply, and the dc power supply is connected to the positive input terminal of the scaling amplifier and is configured to provide dc power to the scaling amplifier.

In one embodiment, the proportional regulating amplifier further comprises a filter capacitor C3, and the filter capacitor C3 is connected in parallel between the negative input terminal of the amplifier and the output terminal of the amplifier. The filter capacitor C3 can absorb noise in the operational amplifier circuit, and the stability of the operational amplifier circuit is improved.

In one embodiment, the proportional regulating amplifier further comprises a first current limiting resistor R16, and the first current limiting resistor R16 is connected in series between the forward rotation output end of the window motor and the positive input end of the amplifier. To avoid possible surge currents from damaging the amplifier.

In one embodiment, the proportional regulating amplifier further comprises an output filter unit comprising a resistor R15 and a capacitor C5, wherein the output of the amplifier is connected to the controller through the resistor R15, and the output of the amplifier is connected to ground through the capacitor C5. Through setting up output filter unit to filter out clutter in the amplifier output current, improved the stability and the precision of amplifier work.

In one embodiment, the driving current collecting module further includes an input current limiting resistor R17, and the input current limiting resistor R17 is connected in series between the output terminal of the dc power supply and the positive input terminal of the amplifier. To avoid possible surge currents from damaging the amplifier.

In one embodiment, the driving current collecting module further includes an input filter capacitor C6, and the input filter capacitor C6 is connected in series between the output terminal of the dc power supply and the positive input terminal of the amplifier. The noise which is possibly introduced in the process that the direct current power supply supplies power to the amplifier is filtered, and the working stability of the amplifier is improved.

An aspect of this application provides a door window ripple anti-pinch device, include according to arbitrary this application embodiment the accurate positioning door window ripple prevent pressing from both sides the circuit for acquire door window glass's position, work as when door window glass's position belongs to predetermined stop region, control module can control door window motor stall, and in door window motor stall time of predetermineeing after, the control disconnection drive current collection module with door window motor's connection has avoided the relay resilience to produce the influence to ripple current's wave form, has improved the ripple and has prevented pressing from both sides the positioning accuracy and the reliability of module.

An aspect of this application provides a vehicle, including arbitrary this application embodiment accurate positioning door window ripple prevent pressing from both sides circuit for acquire door window glass's position works as when door window glass's position belongs to predetermined stop region, control module can control window motor stall, and in window motor stall time predetermineeing later, the control disconnection drive current acquisition module with window motor's connection has avoided the relay to kick-back to produce the influence to ripple current's wave form, has improved the vehicle ripple and has prevented pressing from both sides the positioning accuracy and the reliability of module.

One aspect of the application provides a method is prevented pressing from both sides by accurate positioning door window ripple, includes:

collecting the driving current of the vehicle window motor based on the driving current collecting module;

acquiring the value of the driving current and the number of ripples based on a control module to judge the position of the window glass;

when the position belongs to a preset stop area, the control module controls the window motor driving module to drive the window motor to stop rotating, and within a preset time after the window motor stops rotating, the control module controls the driving current collecting module to be disconnected with the window motor, and the window motor driving module is used for driving the window motor to rotate forwards, reversely or stop rotating.

In the method for accurately positioning the ripple wave anti-pinch of the car window in the embodiment, the driving current of the car window motor is collected by arranging the driving current collecting module, so that the control module in the car can obtain the driving current value and the number of the ripples based on the driving current to judge the position of the car window glass, when the position of the car window glass belongs to a preset stop area, the car window motor can be controlled to stop rotating based on the control module, and in a preset time after the car window motor stops rotating, the connection between the driving current collecting module and the car window motor is controlled to be disconnected based on the control module, namely, after the car window motor stops and under the condition that the collection of the driving current of the car window motor is finished, the control module controls to disconnect the connection between the driving current collecting module and the car window motor, and the collection of the driving current of the car window motor is finished at this moment, therefore, the drive current acquisition module and the in-process of window motor disconnection, the relay resilience can not influence the wave form of ripple current to the positioning accuracy and the reliability of ripple anti-pinch module have been improved.

In one embodiment, before the controlling the window motor driving module to drive the window motor to stop rotating based on the control module, the method further includes:

the method comprises the steps that a window motor and a window power supply are connected based on a triggering starting signal of a user to the window motor, which is received by a first switch unit, and the first switch unit is connected in series between an electric connection path of the window motor and the window power supply;

the forward rotation connection between the vehicle window motor and the vehicle window power supply is realized based on the forward rotation control signal action of the control module received by a second switch unit, and the second switch unit is connected in series between the vehicle window motor and an electric connection path of the first switch unit;

and the third switching unit is connected between the electric connection passages of the window motor and the second switching unit in series.

In the accurate positioning door window ripple anti-pinch method in the above embodiment, the door window motor with set up first switch unit between the electric connection route of door window power, it is right based on the user who acquires door window motor's the start signal that triggers, first switch unit connects door window motor with the door window power, and does not trigger under the condition of start signal, first switch unit breaks off door window motor with the connection of door window power can improve effectively the energy-conserving performance of circuit is prevented pinch by accurate positioning door window ripple. The second switch unit is connected in series between the electric connection paths of the window motor and the first switch unit, and acts based on the acquired forward rotation control signal sent by the control module, so that forward rotation connection between the window motor and the window power supply is realized. And a third switching unit is connected in series between the electric connection paths of the window motor and the second switching unit, and the third switching unit acts based on the acquired reverse control signal sent by the control module to realize reverse connection between the window motor and the window power supply.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain drawings of other embodiments based on these drawings without any creative effort.

Fig. 1 is a schematic circuit diagram of a precisely positioned vehicle window ripple anti-pinch circuit according to a first embodiment of the present disclosure.

Fig. 2 is a schematic circuit diagram of a precisely positioned vehicle window ripple anti-pinch circuit according to a second embodiment of the present disclosure.

Fig. 3 is a schematic circuit diagram of a precisely positioned vehicle window ripple anti-pinch circuit according to a third embodiment of the present disclosure.

Fig. 4 is a schematic circuit diagram of a precisely positioned vehicle window ripple anti-pinch circuit according to a fourth embodiment of the present disclosure.

Fig. 5 is a schematic circuit diagram of a window motor driving module provided in a fifth embodiment of the present application.

Fig. 6 is a schematic circuit diagram of a precisely positioned vehicle window ripple anti-pinch circuit according to a sixth embodiment of the present disclosure.

Fig. 7 is a schematic circuit diagram of a precisely positioned vehicle window ripple anti-pinch circuit according to a seventh embodiment of the present disclosure.

Fig. 8 is a schematic circuit diagram of a proportional regulating amplifier provided in an eighth embodiment of the present application.

Fig. 9 is a schematic circuit diagram of a driving current collecting module provided in a ninth embodiment of the present application.

Fig. 10 is a circuit diagram of a control module according to an embodiment of the present application.

Fig. 11 is a flowchart illustrating a method for accurately positioning ripple of a vehicle window to prevent pinching.

Fig. 12 is a flowchart illustrating a method for accurately positioning ripple anti-pinch of a vehicle window according to another embodiment of the present disclosure.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Where the terms "comprising," "having," and "including" are used herein, another element may be added unless an explicit limitation is used, such as "only," "consisting of … …," etc. Unless mentioned to the contrary, terms in the singular may include the plural and are not to be construed as being one in number.

It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present application.

In this application, unless otherwise expressly stated or limited, the terms "connected" and "connecting" are used broadly and encompass, for example, direct connection, indirect connection via an intermediary, communication between two elements, or interaction between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

As shown in fig. 1, in an embodiment of the present application, an anti-pinch circuit 100 for precisely positioning a ripple of a vehicle window includes a driving current collection module 20, a vehicle window motor driving module 10, and a control module 30, where the driving current collection module 20 is connected to the vehicle window motor and is configured to collect a driving current of the vehicle window motor; the control module 30 is connected with the driving current collecting module 20 and is used for acquiring the value and the number of ripples of the driving current so as to judge the position of the window glass; the control module 30 is configured to: when the position belongs to a preset stop area, the control module 30 controls the window motor to stop rotating, and controls to disconnect the driving current collection module 20 from the window motor within a preset time after the window motor stops rotating; the window motor driving module 20 is configured to drive the window motor to rotate forward, backward, or stop rotating based on the control of the control module 30.

Specifically, in the precise positioning vehicle window ripple anti-pinch circuit in the above embodiment, by providing the driving current collecting module 20 for collecting the vehicle window motor, the control module 30 in the vehicle can obtain the driving current value and the number of ripples to determine the position of the vehicle window glass based on the driving current, when the position of the vehicle window glass belongs to the preset stop region, the control module 30 can control the vehicle window motor to stop rotating, and control to disconnect the connection between the driving current collecting module 20 and the vehicle window motor within the preset time after the vehicle window motor stops rotating, that is, after the vehicle window motor stops and under the condition that the collection of the driving current of the vehicle window motor is completed, the control module 30 controls to disconnect the connection between the driving current collecting module 20 and the vehicle window motor, at this time, the collection of the driving current of the vehicle window motor has been completed, consequently, drive current collection module 20 with window motor disconnection's in-process, because window motor's rotational speed is zero, drive current collection module 20 has accomplished right drive current's collection, the relay kick-backs and can not exert an influence to the ripple current's that gathers before wave form to the positioning accuracy and the reliability of module are prevented pressing from both sides by the ripple have been improved.

Further, in an embodiment of the present application, in a precisely-positioned vehicle window ripple anti-pinch circuit, as shown in fig. 2, a vehicle window motor driving module 10 includes a first switching unit 11, a second switching unit 12, and a third switching unit 13. The first switch unit 11 is connected in series between an electric connection path of the window motor and a window power supply, and the first switch unit 11 is used for connecting the window motor and the window power supply based on a trigger starting signal of a user to the window motor; the second switch unit 12 is connected in series between the electrical connection paths of the window motor and the first switch unit, and the second switch unit 12 is configured to act based on the acquired forward rotation control signal sent by the control module 30 to realize forward rotation connection between the window motor and the window power supply; the third switch unit 13 is connected in series between the electrical connection paths of the window motor and the second switch unit 12, and is configured to implement a reverse connection between the window motor and the window power supply based on the acquired reverse control signal action sent by the control module 30. In the present embodiment, the normal rotation direction of the window motor is indicated in the direction indicated by the arrow.

Specifically, in the circuit is prevented pressing from both sides by accurate positioning door window ripple in above-mentioned embodiment window motor with set up first switch element 11 between the electric connection route of window power, first switch element 11 is used for right based on the user window motor's the start signal that triggers connects window motor with the window power, and do not trigger under the start signal's the condition, first switch element 11 disconnection window motor with the connection of window power can improve effectively the circuit is prevented pressing from both sides by accurate positioning door window ripple's energy-conserving performance. A second switch unit 12 is connected in series between the electric connection paths of the window motor and the first switch unit 11, and the second switch unit 12 is used for acting based on the acquired forward rotation control signal sent by the control module 30 to realize forward rotation connection between the window motor and the window power supply. And a third switching unit 13 is connected in series between the electric connection paths of the window motor and the second switching unit 12, and the third switching unit 13 is used for acting based on the acquired reverse rotation control signal sent by the control module 30 to realize reverse connection between the window motor and the window power supply.

Further, in the accurate positioning vehicle window ripple anti-pinch circuit provided in an embodiment of the present application, as shown in fig. 3, the second switch unit includes a first sub-switch unit 121 and a second sub-switch unit 122 connected in series, the first sub-switch unit 121 is connected in series between the electrical connection paths of the vehicle window motor and the first switch unit 11, the second sub-switch unit 122 is connected in series between the connection paths of the control module 30 and the first sub-switch unit 121, and the second sub-switch unit 122 is configured to change the connection state of the first sub-switch unit 121 based on the forward rotation control signal action sent by the control module 30, so as to implement the forward rotation connection between the vehicle window motor and the power supply. The second sub-switch unit 122 is arranged to realize actions based on forward rotation control signals sent by the control module 30, and change the connection state of the first sub-switch unit 121, so that the vehicle window motor is connected with the vehicle window power supply in a forward rotation mode, separation of forward rotation control and reverse rotation control of the vehicle window motor is realized, stability of circuit operation is improved, and complexity of circuit design is reduced.

Further, in an embodiment of the present application, in the precisely positioning ripple anti-pinch circuit for a vehicle window, as shown in fig. 4, the third switch unit includes a third sub-switch unit 131 and a fourth sub-switch unit 132 connected in series, the third sub-switch unit 131 is connected in series between the electrical connection paths of the vehicle window motor and the first sub-switch unit 121, the fourth sub-switch unit 132 is connected in series between the connection paths of the control module 30 and the third sub-switch unit 131, and the fourth sub-switch unit 132 is configured to change the connection state of the third sub-switch unit 131 based on the action of the reverse control signal sent by the control module 30, so as to implement the reverse connection between the vehicle window motor and the power supply. The fourth sub-switch unit 132 is arranged to realize action based on a reverse rotation control signal sent by the control module 30, and change the connection state of the third sub-switch unit 131, so that the window motor is connected with the window power supply in a reverse rotation manner, separation of forward rotation control and reverse rotation control of the window motor is realized, the stability of circuit operation is improved, and the complexity of circuit design is reduced.

Further, in the precisely-positioned vehicle window ripple anti-pinch circuit provided in an embodiment of the present application, as shown in fig. 5, the first switch unit includes a first energization coil L1, and a first connection terminal 1, a second connection terminal 2, and a third connection terminal 3 that are isolated from each other, and a current flowing through the vehicle window motor sequentially flows through the third connection terminal 3 and the second connection terminal 2 and then flows into the ground; the first energization coil L1 energizes based on the acquired trigger start signal issued by the user to disconnect the third connection terminal 3 and the second connection terminal 2, so that the window power supply supplies power to the window motor via the first connection terminal 1 and the third connection terminal 3.

Specifically, in the precisely-positioned anti-pinch circuit for vehicle window ripples in the above-mentioned embodiment, as shown in fig. 5, the first switch unit is provided to include the first energizing coil L1, and the first connecting terminal 1, the second connecting terminal 2, and the third connecting terminal 3 that are isolated from each other, the second connecting terminal 2 and the third connecting terminal 3 are in a normally closed state, and the first connecting terminal 1 and the third connecting terminal 3 are in a normally open state. When the first energizing coil L1 is not energized, the current flowing through the window motor flows into the ground after sequentially flowing through the third connection terminal 3 and the second connection terminal 2, so that the electrical connection path between the window motor and the window power supply is in a normally open state; after the first electrifying coil L1 is electrified based on the trigger starting signal, the first connecting terminal 1 and the third connecting terminal 3 are connected, meanwhile, the second connecting terminal 2 and the third connecting terminal 3 are disconnected, and the power supply of the window power supply to the window motor through the first connecting terminal 1 and the third connecting terminal 3 is realized. Under the condition that a triggering starting signal of the window motor is not acquired by a user, the first switch unit is disconnected with the window motor and the window power supply, so that the energy-saving performance of the accurate positioning window ripple anti-pinch circuit can be effectively improved.

Further, in the precisely-positioned ripple anti-pinch circuit of the vehicle window in the above embodiment, as shown in fig. 5, the first sub-switch unit includes a second electrified coil L2, and a fourth connection terminal 4, a fifth connection terminal 5, and a sixth connection terminal 6 that are isolated from each other, and the current flowing through the vehicle window motor sequentially flows through the sixth connection terminal 6 and the fifth connection terminal 5 and then flows into the ground; the second electrified coil L2 is used for being electrified based on the acquired forward rotation control signal sent by the control module to disconnect the sixth connection terminal 6 and the fifth connection terminal 5, so that the window power supply supplies power to the window motor through a connection path between the fourth connection terminal 4 and the sixth connection terminal 6.

Specifically, in the precisely-positioned vehicle window ripple anti-pinch circuit in the above embodiment, as shown in fig. 5, the first sub-switch unit includes the second electrified coil L2, and the fourth connection terminal 4, the fifth connection terminal 5, and the sixth connection terminal 6 that are isolated from each other, the fifth connection terminal 5 and the sixth connection terminal 6 are in a normally closed state, and the fourth connection terminal 4 and the sixth connection terminal 6 are in a normally open state. Under the condition that the second electrified coil L2 is not electrified, the current flowing through the window motor flows into the ground after sequentially flowing through the sixth connecting terminal 6 and the fifth connecting terminal 5, so that an electric connection path between the window motor and the window power supply is in a normally open state; when the second electrified coil L2 is electrified under the influence of the second sub-switch unit, the fourth connection terminal 4 and the sixth connection terminal 6 are connected, and meanwhile, the fifth connection terminal 5 and the sixth connection terminal 6 are disconnected, so that the power supply of the window power supply to the window motor is realized through the fourth connection terminal 4 and the sixth connection terminal 6, that is, the current flowing out of the window power supply flows to the ground after flowing through the third switch unit and sequentially flows through the window motor, the fourth connection terminal 4 and the sixth connection terminal 6, and the forward rotation driving circuit of the window motor is connected.

Further, in the precisely positioned ripple anti-pinch circuit of the vehicle window in the above embodiment, as shown in fig. 5, the second sub-switch unit includes a transistor Q1, a current limiting resistor R4 and a biasing resistor R5, wherein a base of the transistor Q1 is connected to the control module through the current limiting resistor R4, and an emitter of the transistor Q1 is grounded; one end of the bias resistor R5 is connected between the current-limiting resistor R4 and the base electrode of the triode Q1, and the other end is grounded.

Specifically, in the accurate positioning door window ripple anti-pinch circuit in above-mentioned embodiment, as shown in fig. 5, triode Q1 is receiving under the high-frequency signal drive that control module sent, triode Q1 switches on, makes the circular telegram of second electrified coil for be connected between fourth connecting terminal 4 and the sixth connecting terminal 6, and disconnection between fifth connecting terminal 5 and the sixth connecting terminal 6 simultaneously realizes the window power supply via fourth connecting terminal 4 and sixth connecting terminal 6 to the window motor power supply, promptly, the electric current that the window power supply flows out flows through behind the third switching unit, flow through in proper order behind window motor, fourth connecting terminal 4 and the sixth connecting terminal 6 to the ground, realize the corotation drive circuit of window motor connects.

Further, in the precisely-positioned ripple anti-pinch circuit for a vehicle window in the above-mentioned embodiment, as shown in fig. 5, the third sub-switch unit includes a third energizing coil L3, and a seventh connection terminal 7, an eighth connection terminal 8, and a ninth connection terminal 9 that are isolated from each other, and the current flowing through the vehicle window motor sequentially flows through the ninth connection terminal 9 and the eighth connection terminal 8 and then flows into the ground; the third energizing coil L3 is used for energizing based on the acquired reversal control signal sent by the control module, and disconnecting the ninth connecting terminal 9 and the eighth connecting terminal 8, so that the window power supply supplies power to the window motor through the seventh connecting terminal 7 and the ninth connecting terminal 9.

Specifically, in the precisely-positioned vehicle window ripple anti-pinch circuit in the above embodiment, as shown in fig. 5, the third sub-switch unit includes the third energizing coil L3, and the seventh connecting terminal 7, the eighth connecting terminal 8, and the ninth connecting terminal 9 that are isolated from each other, the eighth connecting terminal 8 and the ninth connecting terminal 9 are in a normally closed state, and the seventh connecting terminal 7 and the ninth connecting terminal 9 are in a normally open state. Under the condition that the third energizing coil L3 is not energized, the current flowing through the window motor flows into the ground after sequentially flowing through the ninth connecting terminal 9 and the eighth connecting terminal 8, so that an electric connection path between the window motor and the window power supply is in a normally open state; when the third energizing coil L3 is energized under the influence of the fourth sub-switch unit, the seventh connection terminal 7 and the ninth connection terminal 9 are connected, and the eighth connection terminal 8 and the ninth connection terminal 9 are disconnected, so that the power supply of the window power supply is supplied to the window motor through the seventh connection terminal 7 and the ninth connection terminal 9, that is, the current flowing out of the window power supply flows through the third switch unit and then flows to the ground after flowing through the window motor, the seventh connection terminal 7 and the ninth connection terminal 9 in sequence, so that the reverse driving circuit of the window motor is connected.

Further, in the precisely positioned ripple anti-pinch circuit of the vehicle window in the above embodiment, as shown in fig. 5, the fourth sub-switch unit includes a transistor Q2, a current limiting resistor R7 and a biasing resistor R9, wherein a base of the transistor Q2 is connected to the control module through the current limiting resistor R7, and an emitter of the transistor Q2 is grounded; one end of the bias resistor R9 is connected between the current-limiting resistor R7 and the base electrode of the triode Q2, and the other end is grounded.

Specifically, in the circuit is prevented pressing from both sides by accurate positioning door window ripple in above-mentioned embodiment, triode Q2 is receiving under the high-frequency signal drive that control module sent, triode Q2 switches on, makes third electrified coil L3 circular telegram for be connected between seventh connecting terminal 7 and the ninth connecting terminal 9, while disconnection between eighth connecting terminal 8 and the ninth connecting terminal 9, realizes the window power supply via seventh connecting terminal 7 and ninth connecting terminal 9 to the window motor power supply, promptly, the electric current that the window power supply flows out is flowing through behind the second switch unit, flow through in proper order flow through behind window motor, ninth connecting terminal 9 and the seventh connecting terminal 7 flow to ground, realize the reversal drive circuit of window motor connects. When the vehicle window motor rotates forwards, the current flowing through the vehicle window motor flows to the ground after sequentially flowing through the fourth connecting terminal 4, the sixth connecting terminal 6 and the sampling resistor R3, the driving current collection module collects the driving current of the vehicle window motor through the P3 port, the control module obtains the driving current value and the number of ripples based on the driving current to judge the position of the vehicle window glass, when the position of the vehicle window glass belongs to a preset stop area, the control module can control the vehicle window motor to stop rotating, meanwhile, the control module starts to wait for a time longer than the stop time of the vehicle window motor due to inertia, in the waiting process of the control module, the driving current collection module collects the driving current of the vehicle window motor through the P3 port, and then the control module outputs low level signals through the P4 port and the P5 port simultaneously, make triode Q1 and triode Q2 turn off, and then make second electrified coil L2 and third electrified coil L3 outage, disconnection between fourth connecting terminal 4 and the sixth connecting terminal 6, be connected between fifth connecting terminal 5 and the sixth connecting terminal 6, disconnection between seventh connecting terminal 7 and the ninth connecting terminal 9, be connected between eighth connecting terminal 8 and the ninth connecting terminal 9, with the disconnection drive current acquisition module with the circular telegram between the window motor connects the return circuit. In the process of rebounding of the relay elastic sheet in the second switch unit and the third switch unit, the rotating speed of the motor is zero, and the driving current acquisition module finishes acquisition of driving current, so that the driving current acquisition module and the window motor are disconnected, the waveform of ripple current cannot be affected by rebounding of the relay, and the positioning accuracy and the reliability of the ripple anti-pinch module are improved.

In an embodiment of the present application, in a precisely-positioned vehicle window ripple anti-pinch circuit, as shown in fig. 6, a driving current collecting module 20 includes a first sampling resistor 21, a second sampling resistor 22, and a proportional regulating amplifier 23. One end of the first sampling resistor 21 is connected with the window motor, the other end of the first sampling resistor 21 is grounded, the driving current in the forward rotation of the window motor flows to the ground after flowing through the first sampling resistor 21, and the first sampling resistor 21 is used for collecting the driving current in the forward rotation of the window motor. One end of the second sampling resistor 22 is connected with the window motor, the other end of the second sampling resistor 22 is grounded, the driving current during the reversing of the window motor flows to the ground after flowing through the second sampling resistor 22, and the second sampling resistor 22 is used for collecting the driving current during the reversing of the window motor. The positive input end of the proportional control amplifier 23 is connected with the input end of the second sampling resistor 22, the negative input end of the proportional control amplifier 23 is connected with the input end of the first sampling resistor 21, and the output end of the proportional control amplifier 23 is connected with the control module 30.

Specifically, in the precisely-positioned anti-pinch circuit for vehicle window ripples in the above embodiment, as shown in fig. 6, the first sampling resistor 21 is connected in series in the forward rotation driving circuit of the vehicle window motor, so that the driving current in the forward rotation of the vehicle window motor flows to the ground after flowing through the first sampling resistor 21, and the driving current in the forward rotation of the vehicle window motor can be collected based on the first sampling resistor 21. Similarly, by connecting the second sampling resistor 22 in series in the reverse rotation driving circuit of the window motor, the driving current when the window motor is reversed flows to the ground after flowing through the second sampling resistor 22, and the driving current when the window motor is reversed can be collected based on the second sampling resistor 22. Through setting up proportional control amplifier 23, carry for controller 30 after amplifying the sampling current who acquires, be convenient for amplify the ripple signal in the window motor drive current who acquires to improve the degree of accuracy and the precision that the ripple signal acquireed, and then improved accuracy and the reliability that the ripple was prevented pressing from both sides.

In an embodiment of the present application, in a precisely-positioned vehicle window ripple anti-pinch circuit, as shown in fig. 7, the driving current collecting module 20 further includes a dc power supply 24, and the dc power supply 24 is connected to a positive input terminal of a proportional regulating amplifier 23 for providing a dc power to the proportional regulating amplifier.

In an embodiment of the present application, in a precisely-positioned vehicle window ripple anti-pinch circuit, as shown in fig. 8, a proportional regulating amplifier 23 includes an amplifier a, a first proportional regulating resistor R15, and a second proportional regulating resistor R11. The output end of the amplifier is connected with the control module, and the positive input end of the amplifier A is connected with the input end of the second sampling resistor; the first proportional regulating resistor R15 is connected in series between the output end of the amplifier A and the input end of the control module; a second proportional regulating resistor R11 is connected in parallel between the negative input of amplifier a and the output of amplifier a.

Further, in the precisely positioning ripple anti-pinch circuit of the vehicle window in the above embodiment, as shown in fig. 8, the proportional regulating amplifier 23 further includes a filter capacitor C3, and the filter capacitor C3 is connected in parallel between the negative input terminal of the amplifier a and the output terminal of the amplifier a. The filter capacitor C3 can absorb noise in the operational amplifier circuit, and the stability of the operational amplifier circuit is improved.

Further, in the precisely positioning ripple anti-pinch circuit of the vehicle window in the above embodiment, as shown in fig. 8, the proportional regulating amplifier 23 further includes a first current limiting resistor R16, and the first current limiting resistor R16 is connected in series between the positive rotation output terminal of the vehicle window motor and the positive input terminal of the amplifier a. To avoid possible surge currents from damaging the amplifier.

Further, in the precisely located vehicle window ripple anti-pinch circuit in the above embodiment, as shown in fig. 8, the proportional control amplifier 23 further includes an output filter unit, the output filter unit includes a resistor R15 and a capacitor C5, wherein the output terminal of the amplifier a is connected to the controller through a resistor R15, and the output terminal of the amplifier a is grounded through a capacitor C5. Through setting up output filtering unit to filter out clutter in the proportion regulation amplifier output current, improved the stability and the precision of proportion regulation amplifier work.

In an embodiment of the present application, in a precisely-positioned vehicle window ripple anti-pinch circuit, as shown in fig. 9, the driving current collecting module 20 further includes an input current limiting resistor R17, and the input current limiting resistor R17 is connected in series between the output terminal P6 of the dc power supply 24 and the positive input terminal of the amplifier a. To avoid possible surge currents from damaging the amplifier.

Further, in the precisely positioning ripple anti-pinch circuit of the vehicle window in the above embodiment, as shown in fig. 9, the driving current collecting module 20 further includes an input filter capacitor C6, and the input filter capacitor C6 is connected in series between the output terminal P6 of the dc power supply 24 and the positive input terminal of the amplifier a. The noise which is possibly introduced in the process that the direct current power supply supplies power to the amplifier is filtered, and the working stability of the amplifier is improved.

Further, in the precisely positioned ripple anti-pinch circuit of the vehicle window in the above embodiment, as shown in fig. 9, the dc power supply 24 employs a parallel voltage divider circuit, which includes a resistor R12 and a resistor R13 connected in series, wherein one end of the resistor R13 is connected to the output end of the resistor R12, the other end of the resistor R13 is grounded, the input end of the resistor R13 is led out of the port P6, and the dc power supply 24 provides dc power to the proportional control amplifier through the port P6.

In an embodiment of the application, in the precisely-positioned ripple anti-pinch circuit for a vehicle window, as shown in fig. 10, the Control module 30 includes a Micro Control Unit (MCU) (micro Control unit), and the MCU is respectively connected to the P1 port, the P4 port, the P5 port, and the P7 port, where the P1 port is used to obtain a trigger start signal input by a user to the vehicle window motor, and the trigger start signal may Control, for example, the vehicle window motor to rotate forward to realize a trigger start signal for raising the vehicle window glass, or Control the vehicle window motor to rotate backward to realize a trigger start signal for lowering the vehicle window glass. When a user applies a trigger starting signal to the window motor, the first switch unit acts based on the trigger starting signal to realize the connection between the window motor and the window power supply, and if the user applies a window glass lifting driving signal, the MCU sends a forward rotation control signal to the second switch unit through a P4 port to realize the forward rotation driving loop connection between the window power supply and the window motor; if the window glass descending driving signal is applied by the user, the MCU sends a reverse control signal to the third switch unit through a P5 port so as to realize reverse driving loop connection between the window power supply and the window motor. In the process of rotating the window motor, the driving current collecting module collects the driving current of the window motor and transmits the driving current to the MCU through the port P7. MCU obtains drive current's value and ripple number are in order to judge window glass's position, works as when the position belongs to predetermined stop area, control window motor stall, and in the time of predetermineeing after window motor stall, MCU exports the low level via P4 port and P5 port respectively, makes the second switch unit with the relay coil outage of third switch unit kind, in order to break off drive current acquisition module with window motor's connection. Because MCU stops after window motor and under the circumstances of having accomplished window motor's drive current collection, MCU control disconnection drive current acquisition module with window motor's connection has been accomplished this moment to window motor drive current's collection, consequently, drive current acquisition module with window motor disconnection's in-process, the relay resilience can not exert an influence to ripple current's wave form to the positioning accuracy and the reliability of module are prevented pressing from both sides by the ripple have been improved.

In a car window ripple anti-pinch device that provides in an embodiment of this application, include according to arbitrary this application embodiment accurate positioning car window ripple prevent pressing from both sides the circuit for acquire window glass's position, work as window glass's position belongs to when predetermined stop region, and control module can control window motor stall, and in window motor stall time predetermineeing after the window motor stall, the control disconnection drive current acquisition module with window motor's connection has avoided the relay to kick-back to produce the influence to ripple current's wave form, has improved the ripple and has prevented pressing from both sides the positioning accuracy and the reliability of pressing from both sides the module.

In a vehicle that provides in an embodiment of this application, including arbitrary this application embodiment accurate positioning door window ripple prevent pressing from both sides the circuit for acquire door window glass's position, work as when door window glass's position belongs to predetermined when stopping the region, control module can control window motor stall, and in window motor stall is after the predetermined time, the control disconnection drive current acquisition module with window motor's connection has avoided the relay to kick-back and has produced the influence to ripple current's wave form, has improved vehicle ripple and has prevented pressing from both sides the positioning accuracy and the reliability of module.

The control module of the application can comprise at least one of a single chip microcomputer, a vehicle-mounted PLC, an ARM, a DSP, a programmable logic controller and the like.

In an embodiment of the present application, a method for accurately positioning ripple anti-pinch of a vehicle window is provided, as shown in fig. 11, including the following steps:

step 202: the driving current of the vehicle window motor is collected based on the driving current collecting module.

Step 204: and acquiring the value of the driving current and the number of ripples based on a control module to judge the position of the window glass.

Step 206: when the position belongs to a preset stop area, the control module controls the window motor driving module to drive the window motor to stop rotating, and within a preset time after the window motor stops rotating, the control module controls the driving current collecting module to be disconnected with the window motor, and the window motor driving module is used for driving the window motor to rotate forwards, reversely or stop rotating.

Specifically, in the method for accurately positioning the ripple wave of the vehicle window to prevent pinching, the driving current of the vehicle window motor is collected by arranging the driving current collecting module, so that the control module in the vehicle can obtain the driving current value and the number of the ripple waves based on the driving current to judge the position of the vehicle window glass, when the position of the vehicle window glass belongs to a preset stop region, the control module can control the vehicle window motor to stop rotating, and in a preset time after the vehicle window motor stops rotating, the control module controls the driving current collecting module to be disconnected from the vehicle window motor, namely, after the vehicle window motor stops and under the condition that the driving current collection of the vehicle window motor is completed, the control module controls the driving current collecting module to be disconnected from the vehicle window motor, and at this time, the collection of the driving current of the vehicle window motor is completed, therefore, the drive current acquisition module and the in-process of window motor disconnection, the relay resilience can not influence the wave form of ripple current to the positioning accuracy and the reliability of ripple anti-pinch module have been improved.

Further, in a method for accurately positioning a window ripple anti-pinch device provided in an embodiment of the present application, as shown in fig. 12, before the window motor is controlled by the control module to drive the window motor to stop rotating, the method further includes the following steps:

step 2062: the window motor and a window power supply are connected based on a triggering starting signal of a user to the window motor, which is received by a first switch unit, and the first switch unit is connected in series between an electric connection path of the window motor and the window power supply.

Step 2064: the forward rotation connection between the window motor and the window power supply is realized based on the forward rotation control signal action of the control module received by the second switch unit, and the second switch unit is connected in series between the window motor and the electric connection path of the first switch unit.

Step 2066: and the third switching unit is connected between the electric connection passages of the window motor and the second switching unit in series.

Specifically, in the accurate positioning door window ripple anti-pinch method in above-mentioned embodiment window motor with set up first switch element between the electric connection route of window power, it is right based on the user who acquires window motor's the start signal that triggers, first switch element connects window motor with the window power, and do not trigger under the condition of start signal, first switch element breaks off window motor with the connection of window power can improve effectively the energy-conserving performance of circuit is prevented and pinched by accurate positioning door window ripple. The second switch unit is connected in series between the electric connection paths of the window motor and the first switch unit, and acts based on the acquired forward rotation control signal sent by the control module, so that forward rotation connection between the window motor and the window power supply is realized. And a third switching unit is connected in series between the electric connection paths of the window motor and the second switching unit, and the third switching unit acts based on the acquired reverse control signal sent by the control module to realize reverse connection between the window motor and the window power supply.

Specifically, when a user operates the window control switch, after detecting that the user operates a window button, the window control module CAN firstly detect the validity of a switch signal, CAN simultaneously acquire vehicle state information through LIN bus or CAN bus and vehicle body network communication, judges whether the window actuation condition logic judgment is met or not according to the vehicle state information, and under the condition that the actuation condition is met, the window control module sends a driving window motor to rotate forwards or backwards to control the window driving mechanism to ascend or descend, so that the ascending or descending of the window is realized. The window driving motor can generate ripple current when rotating, the driving current collecting module can collect the driving current of the window motor, the control module can judge the position of the window glass based on the value and the ripple number of the obtained driving current, when the window encounters an obstacle in the automatic rising process, the width of the pulse signal can be lengthened, the current of the window driving motor can be enlarged, the window control module can judge whether an object is clamped or not according to the width of the pulse signal of the window driving motor and the size of the motor current, if the object is clamped in the anti-clamping area, the window control module controls the window motor to rotate reversely to realize the anti-clamping function, when the position of the window glass belongs to the preset stopping area, the control module can control the window motor to stop rotating and control to disconnect the connection between the driving current collecting module and the window motor within the preset time after the motor window stops rotating, that is, after window motor stopped and under the circumstances of having accomplished the drive current collection to window motor, the control module control disconnection drive current collection module with window motor's connection, the collection to window motor drive current has been accomplished this moment, consequently, drive current collection module with window motor disconnection's in-process, the relay resilience can not exert an influence to ripple current's wave form to the positioning accuracy and the reliability of module are prevented pressing from both sides by the ripple have been improved.

More specifically, the working principle of the embodiment of the application is described by taking an example that the window glass meets an obstacle in the ascending process as an example, if the window glass meets the obstacle in the running process, the load applied to the window motor due to the effect of the obstacle becomes large, the rotating speed of the window motor becomes slow, the running current of the window motor becomes large, the width of the pulse signal becomes wide, and when the pulse width or the current of the window motor exceeds a preset threshold value, the control module controls the window motor to reversely rotate to control the descending of the window glass to realize the anti-pinch function. The control module judges the position of the window glass according to the value of the driving current of the window motor and the number of ripples, when the position of the window glass belongs to a preset stop area, the control module can control the window motor to stop rotating, and controlling to disconnect the connection between the driving current acquisition module and the window motor within a preset time after the window motor stops rotating, that is, in the case where the drive current collection for the window motor is completed after the window motor is stopped, the control module controls to disconnect the driving current acquisition module from the vehicle window motor, and the acquisition of the driving current of the vehicle window motor is completed at the moment, therefore, the drive current acquisition module and the in-process of window motor disconnection, the relay resilience can not influence the wave form of ripple current to the positioning accuracy and the reliability of ripple anti-pinch module have been improved.

The working principle of starting the ripple anti-pinch function when the vehicle window glass meets an obstacle in the descending process is similar to that in the ascending process, and the working principle is not repeated here.

For specific limitations of the precisely positioning vehicle window ripple anti-pinch method in the above embodiments, reference may be made to the above limitations of the precisely positioning vehicle window ripple anti-pinch circuit, which are not described herein again.

It should be understood that although the various steps in the flowcharts of fig. 11-12 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Also, at least some of the steps in fig. 11-12 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternating with other steps or at least some of the sub-steps or stages of other steps.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a circuit is prevented pressing from both sides by accurate positioning door window ripple which characterized in that includes:

2. The accurate positioning window ripple anti-pinch circuit of claim 1, wherein the window motor drive module comprises:

3. The precisely-positioned ripple anti-pinch circuit for the vehicle window of claim 2, wherein the first switch unit comprises a first energizing coil, and a first connecting terminal, a second connecting terminal and a third connecting terminal which are isolated from each other;

the first electrifying coil is electrified based on the trigger starting signal to disconnect the third connecting terminal and the second connecting terminal and connect the first connecting terminal and the third connecting terminal, so that the vehicle window power supply supplies power to the vehicle window motor through the first connecting terminal and the third connecting terminal.

4. The precisely-positioned vehicle window ripple anti-pinch circuit of claim 3, wherein the second switching unit comprises a first sub-switching unit and a second sub-switching unit connected in series,

the first sub-switch unit is connected in series between the window motor and an electrical connection path of the first switch unit,

the second sub-switch unit is connected in series between the control module and a connecting passage of the first sub-switch unit and used for changing the connection state of the first sub-switch unit based on the action of a forward rotation control signal sent by the control module so as to realize forward rotation connection between the window motor and the power supply.

5. The precisely-positioned vehicle window ripple anti-pinch circuit of claim 3, wherein the third switching unit comprises a third sub-switching unit and a fourth sub-switching unit connected in series,

the third sub-switch unit is connected in series between the window motor and the electrical connection path of the first sub-switch unit,

the fourth sub-switch unit is connected in series between the control module and a connection path of the third sub-switch unit and used for changing the connection state of the third sub-switch unit based on the action of a reverse control signal sent by the control module so as to realize reverse connection between the window motor and the power supply.

6. The precisely-positioned vehicle window ripple anti-pinch circuit according to claim 4, wherein the first sub-switch unit comprises a second electrified coil, and a fourth connecting terminal, a fifth connecting terminal and a sixth connecting terminal which are isolated from each other;

the second electrified coil is used for being electrified based on the forward rotation control signal, and the connection between the sixth connecting terminal and the fifth connecting terminal is disconnected, so that the vehicle window power supply supplies power to the vehicle window motor through the fourth connecting terminal and the sixth connecting terminal.

7. The precisely-positioned ripple anti-pinch circuit for the vehicle window of claim 4, wherein the third sub-switch unit comprises a third energizing coil, and a seventh connecting terminal, an eighth connecting terminal and a ninth connecting terminal which are isolated from each other;

the third energizing coil is used for being electrified based on the reversal control signal, and the ninth connecting terminal and the eighth connecting terminal are disconnected, so that the vehicle window power supply supplies power to the vehicle window motor through the seventh connecting terminal and the ninth connecting terminal.

8. The precisely-positioned vehicle window ripple anti-pinch circuit of claim 6, wherein the second sub-switching unit comprises a transistor Q1, a current-limiting resistor R4, and a biasing resistor R5,

the base electrode of the triode Q1 is connected with the control module through the current-limiting resistor R4, and the emitter electrode of the triode Q1 is grounded; one end of the bias resistor R5 is connected between the current-limiting resistor R4 and the base electrode of the triode Q1, and the other end is grounded.

9. The precisely-positioned vehicle window ripple anti-pinch circuit of claim 7, wherein the fourth sub-switching unit comprises a transistor Q2, a current-limiting resistor R7, and a biasing resistor R9,

the base electrode of the triode Q2 is connected with the control module through the current-limiting resistor R7, and the emitter electrode of the triode Q2 is grounded; one end of the bias resistor R9 is connected between the current-limiting resistor R7 and the base electrode of the triode Q2, and the other end is grounded.

10. The precisely-positioned vehicle window ripple anti-pinch circuit of any one of claims 1-9, wherein the drive current acquisition module comprises:

one end of the first sampling resistor is connected to the vehicle window motor, the other end of the first sampling resistor is grounded, the driving current of the vehicle window motor in the forward rotation flows to the ground after flowing through the first sampling resistor, and the first sampling resistor is used for collecting the driving current of the vehicle window motor in the forward rotation;

one end of the second sampling resistor is connected to the vehicle window motor, the other end of the second sampling resistor is grounded, and the second sampling resistor is used for collecting driving current when the vehicle window motor rotates reversely;

11. The accurate positioning car window ripple anti-pinch circuit of claim 10, wherein the drive current collection module further comprises:

and the direct current power supply is connected with the positive input end of the proportional regulating amplifier and is used for supplying direct current to the proportional regulating amplifier.

12. The precisely-positioned vehicle window ripple anti-pinch circuit of claim 11, wherein the proportional regulator amplifier comprises:

13. The precisely-positioned vehicle window ripple anti-pinch circuit of claim 12, wherein the proportional regulator amplifier further comprises:

and the filter capacitor C3 is connected between the negative input end of the amplifier and the output end of the amplifier in parallel.

14. The precisely-positioned vehicle window ripple anti-pinch circuit of claim 13, wherein the proportional regulator amplifier further comprises:

and the first current limiting resistor R16 is connected in series between the positive rotation output end of the vehicle window motor and the positive input end of the amplifier.

15. The precisely-positioned vehicle window ripple anti-pinch circuit of claim 14, wherein the proportional regulator amplifier further comprises an output filtering unit,

the output filtering unit comprises a resistor R15 and a capacitor C5;

wherein the output terminal of the amplifier is connected to the controller through the resistor R15, and the output terminal of the amplifier is grounded through the capacitor C5.

16. The accurate positioning car window ripple anti-pinch circuit of claim 15, wherein the drive current collection module further comprises:

and the input current limiting resistor R17 is connected in series between the output end of the direct current power supply and the positive input end of the amplifier.

17. The accurate positioning car window ripple anti-pinch circuit of claim 16, wherein the drive current collection module further comprises:

and the input filter capacitor C6 is connected in series between the output end of the direct current power supply and the positive input end of the amplifier.

18. The utility model provides a door window ripple anti-pinch device which characterized in that includes:

the precisely positioned vehicle window ripple anti-pinch circuit of any one of claims 1 to 17.

19. A vehicle, characterized by comprising:

20. The utility model provides a method is prevented pressing from both sides by accurate positioning door window ripple which characterized in that includes:

21. The precisely positioned ripple anti-pinch method of claim 20, wherein before controlling the window motor driving module to drive the window motor to stop rotating based on the control module, the method further comprises:

the method comprises the steps that a window motor and a window power supply are connected based on a triggering starting signal of a user to the window motor, wherein the triggering starting signal is acquired by a first switch unit, and the first switch unit is connected between an electric connection path of the window motor and the window power supply in series;

the forward rotation connection between the vehicle window motor and the vehicle window power supply is realized based on the forward rotation control signal action of the control module acquired by a second switch unit, and the second switch unit is connected in series between the vehicle window motor and an electric connection path of the first switch unit;

and realizing reverse connection between the window motor and the window power supply based on the action of a reverse control signal of the control module acquired by a third switching unit, wherein the third switching unit is connected in series between electric connection passages of the window motor and the second switching unit.