Window and wiper control system, method, storage medium and vehicle

Abstract

The present invention includes a vehicle window and wiper control system, a method, a storage medium and a vehicle. The vehicle window and wiper control system includes: a wiper power supply control module, which is configured to provide a wiper motor voltage sampling value for generating a wiper motor status signal; an enable signal generation module, which is configured to generate a linkage enable signal based on the wiper motor status signal; a vehicle window heating control module, which is configured to generate a heating control signal for the vehicle window based on at least one of the linkage enable signal and the system heating enable signal; and a vehicle window cleaning control module, which is configured to generate a cleaning control signal for the vehicle window based on at least one of the linkage enable signal and the system cleaning enable signal. In addition to the system enable signal, the vehicle window cleaning control module and the vehicle window heating control module are controlled by using the linkage enable signal indicating the stall condition of the vehicle window wiper motor, so that the linkage operation of the vehicle window cleaning function and the vehicle window heating function for the stall condition of the vehicle window wiper motor is realized.

Description

Technical Field

[0001] The present invention relates to the field of automobile control technology, and in particular to a vehicle window and windshield wiper control system, method, storage medium and vehicle. Background Art

[0002] For traditional wiper systems, when there is foreign matter on the front window or frost due to low temperature, if the user starts the wiper system, the wipers will be blocked. The blocked wipers further cause the wiper motor to enter the stall mode, and being in the stall mode for a long time will cause mechanical damage to the wipers. Since the stall current is usually much larger than the rated current, in order to solve the stall problem, the internal components and power supply harnesses of traditional wiper motors usually adopt interference design, which increases the design cost.

[0003] In addition, as the trend of vehicle intelligence becomes more and more obvious, users' requirements for vehicle intelligence are also getting higher and higher. Therefore, more and more vehicle intelligent control solutions are being developed to solve problems that arise in actual vehicle use, such as wiper motor stalling. Figure 1 This is a schematic diagram of an existing vehicle window wiper stall protection system. The wiper motor power supply is controlled by relay K1, and the wiper motor current is sampled through the current sampling resistor R25. The sampled wiper motor current is then input to the system main control chip MCU (Micro-Controller Unit) via a sampling circuit including an operational amplifier U10A (as current CURRENT_AD). The main control chip MCU determines whether the wiper motor current exceeds the motor stall current threshold, and makes a decision on whether to shut down the wiper motor based on this. However, in this solution, the external AD sampling accuracy is not high, and the MCU software strategy judgment time is relatively long. Summary of the invention

[0004] According to one aspect of the present invention, a vehicle window and wiper control system is provided, which includes: a wiper power supply control module, which is configured to provide a wiper motor voltage sampling signal for generating a wiper motor status signal; an enable signal generation module, which is configured to generate a linkage enable signal based on the wiper motor status signal; a window heating control module, which is configured to generate a heating control signal for the vehicle window based on at least one of the linkage enable signal and the system heating enable signal; and a window cleaning control module, which is configured to generate a cleaning control signal for the vehicle window based on at least one of the linkage enable signal and the system cleaning enable signal.

[0005] As an alternative or supplement to the above solution, in a vehicle window and wiper control system according to an embodiment of the present invention, the enable signal generation module is further configured to generate a linkage enable signal based on the vehicle window status signal and the vehicle status signal.

[0006] As an alternative or supplement to the above solution, in a vehicle window and wiper control system according to an embodiment of the present invention, one or more of the wiper motor voltage sampling signal, the heating control signal and the cleaning control signal are obtained by an intelligent high-side switch.

[0007] As an alternative or supplement to the above scheme, in a window and wiper control system according to an embodiment of the present invention, when the wiper motor status signal indicates that the wiper motor is blocked, the window status signal indicates that the window is locked, and the vehicle status signal indicates that the vehicle is stationary, an enabled linkage enable signal is generated.

[0008] According to another aspect of the present invention, a vehicle window and wiper control method is provided, which includes: providing a wiper motor voltage sampling signal for generating a wiper motor status signal; generating a linkage enable signal based on the wiper motor status signal; generating a heating control signal for the vehicle window based on at least one of the linkage enable signal and a system heating enable signal; and generating a cleaning control signal for the vehicle window based on at least one of the linkage enable signal and a system cleaning enable signal.

[0009] As an alternative or supplement to the above solution, the vehicle window and wiper control method according to an embodiment of the present invention further includes: generating the linkage enable signal based on the vehicle window status signal and the vehicle status signal.

[0010] As an alternative or supplement to the above solution, in a vehicle window and wiper control method according to an embodiment of the present invention, one or more of the wiper motor voltage sampling signal, the heating control signal and the cleaning control signal are obtained by an intelligent high-side switch.

[0011] As an alternative or supplement to the above scheme, in a window and wiper control method according to an embodiment of the present invention, when the wiper motor status signal indicates that the wiper motor is blocked, the window status signal indicates that the window is locked, and the vehicle status signal indicates that the vehicle is stationary, an enabled linkage enable signal is generated.

[0012] According to another aspect of the present invention, a computer-readable storage medium is provided, on which program instructions executable by a processor are stored, and when the program instructions are executed by the processor, the method according to any embodiment of one aspect of the present invention is performed.

[0013] According to yet another aspect of the present invention, a vehicle is provided, comprising the system according to any one embodiment of one aspect of the present invention.

[0014] The window and wiper control system, method and vehicle according to one or more embodiments of the present invention can automatically, efficiently, safely and conveniently handle the problem of window wiper motor stalling. In addition to the enable signal from the system MCU, the window cleaning control module and the window heating control module are controlled by additionally utilizing the linkage enable signal indicating the window wiper motor stalling condition, thereby realizing the linkage operation of the window cleaning function and the window heating function for the window wiper motor stalling condition. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or other aspects and advantages of the present invention will become clearer and easier to understand through the following description in conjunction with the accompanying drawings, in which the same or similar elements are represented by the same reference numerals. The accompanying drawings include:

[0016] Figure 1 It is a schematic diagram of an existing vehicle windshield wiper blocking protection system;

[0017] Figure 2 is a schematic diagram of a vehicle window and wiper control system 100 according to an embodiment of the present invention;

[0018] Figure 3 is a schematic diagram of a wiper power supply control module 150 according to an embodiment of the present invention;

[0019] Figure 4 is a schematic diagram of an enable signal generating module 120 according to an embodiment of the present invention;

[0020] Figure 5 is a schematic diagram of a vehicle window heating control module 130 according to an embodiment of the present invention;

[0021] Figure 6 and Figure 7 is a schematic diagram of a window cleaning control module 140 according to an embodiment of the present invention; and

[0022] Figure 8 2 is a schematic flow chart of a vehicle window and wiper control method 200 according to an embodiment of the present invention. DETAILED DESCRIPTION

[0023] In this specification, the present invention is more fully described with reference to the accompanying drawings in which exemplary embodiments of the present invention are illustrated. However, the present invention may be implemented in different forms and should not be construed as being limited to the embodiments given herein. The embodiments given are intended to make the disclosure herein comprehensive and complete, so as to more fully convey the scope of the present invention to those skilled in the art.

[0024] Terms such as "comprising" and "including" indicate that in addition to the units and steps directly and clearly stated in the specification and claims, the technical solution of the present invention does not exclude the situation of having other units and steps that are not directly or clearly stated. Terms such as "first" and "second" do not indicate the order of units in terms of time, space, size, etc., but are only used to distinguish each unit.

[0025] The present invention is described below with reference to the flow chart explanation, block diagram and / or flow chart of the method and system according to an embodiment of the present invention.It will be understood that each frame of these flow chart explanations and / or block diagrams and the combination of flow chart explanations and / or block diagrams can be realized by computer program instructions.These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer or other programmable data processing device to form a machine, so that these instructions performed by the processor of a computer or other programmable data processing device create parts for implementing the function / operation specified in these flow charts and / or frames and / or one or more flow charts.It should also be noted that in some alternative implementations, the function / operation shown in the frame may not occur in the order shown in the flow chart.For example, the two frames shown in sequence can actually be performed substantially simultaneously or these frames can sometimes be performed in reverse order, specifically depending on the function / operation involved.

[0026] Where applicable, hardware, software, or a combination of hardware and software may be used to implement the various embodiments provided by the present disclosure. In addition, where applicable, without departing from the scope of the present disclosure, the various hardware components and / or software components set forth herein may be combined into composite components comprising software, hardware, and / or both. Where applicable, without departing from the scope of the present disclosure, the various hardware components and / or software components set forth herein may be separated into subcomponents comprising software, hardware, or both. In addition, where applicable, it is envisioned that software components may be implemented as hardware components, and vice versa.

[0027] Reference now Figure 2 , Figure 2 FIG. 1 is a schematic diagram of a vehicle window and wiper control system 100 according to an embodiment of the present invention.

[0028] The window and wiper control system 100 may include an enable signal generating module 120, a window heating control module 130, a window cleaning control module 140, and a wiper power supply control module 150. In one embodiment, the window and wiper control system 100 may further include a system control module 110. As required, for example, the wiper power supply control module 150, the window heating control module 130, and the window cleaning control module 140 may respectively control the power supply parts (e.g., motors) of the window wipers, the window heating device, and the window cleaning device, so as to realize the control of the window wipers, the window heating device, and the window cleaning device. Therefore, the motors for powering the window wipers, the window heating device, and the window cleaning device may also be respectively included in the wiper power supply control module 150, the window heating control module 130, and the window cleaning control module 140.

[0029] exist Figure 2 In the present invention, on the one hand, the window heating control module 130, the window cleaning control module 140 and the wiper power supply control module 150 in the window and wiper control system 100 can be enabled by the system control module 110 in a conventional manner through the system wiper enable signal, the system heating enable signal and the system cleaning enable signal. On the other hand, the wiper power supply control module 150 outputs a voltage sampling value converted from the load current sampling value diagnosed by it while working, and compares it with the preset voltage threshold through the post-stage comparator to obtain a comparison result. The comparison result, the vehicle status signal (for example, the electronic control module ECM enable signal), and the window status signal (for example, the window locking signal) are logically judged by the logic gate circuit, and the logic gate outputs a linkage enable signal to control the enabling of the window heating control module 130 and the window cleaning control module 140. In the present invention, the window heating control module 130, the window cleaning control module 140, the window heating control module 130 and the window cleaning control module 140 can be enabled by the system control module 110 in a conventional manner. On the other hand, the wiper power supply control module 150 outputs a voltage sampling value converted from the load current sampling value diagnosed by it while working, and compares it with the preset voltage threshold through the post-stage comparator to obtain a comparison result. The comparison result, the vehicle status signal (for example, the electronic control module ECM enable signal), and the window status signal (for example, the window locking signal) are logically judged by the logic gate circuit, and the logic gate outputs a linkage enable signal to control the enabling of the window heating control module 130 and the window cleaning control module 140. Figure 2 In the embodiment shown in , an AND gate is used as a logic gate; the output of the AND gate is a high level only when all inputs of the AND gate are at a high level (or a true value of 1).

[0030] For example, in Figure 2 In the example, the comparator can be set to: when the voltage sampling value is greater than the preset voltage threshold, the comparator outputs a high level. When the vehicle is stationary, the vehicle status signal is low, and the signal is high after passing through the NOT gate. When the window is closed or locked, the window status signal is high. Only when the above three conditions are met at the same time, that is, the voltage sampling value is greater than the preset voltage threshold (indicating that the wiper motor is blocked), the vehicle is stationary and the window is closed at the same time, the door outputs a high-level linkage enable signal to enable the window heating control module 130 and the window cleaning control module 140.

[0031] The following is a detailed description Figure 2 The configuration of each part in .

[0032] The system control module 110 may be configured to generate enable signals for the window heating control module 130, the window cleaning control module 140, and the wiper power supply control module 150, respectively, based on instructions from the user: a system wiper enable signal, a system heating enable signal, and a system cleaning enable signal (e.g., Figure 2 ).

[0033] refer to Figure 3 , Figure 3 Schematic diagram of a wiper power supply control module 150 according to an embodiment of the present invention. The system control module 110 inputs the MCU_FRONT_WIPER_IN signal to pin 2 of device U4 (e.g., model BTN8982TA) of the wiper power supply control module 150, and controls the high and low level changes of the signal to realize the control of power supply or grounding of output pins 4 and 8. Pin 7 and pin 1 are respectively connected to high level and low level for selective output as described above. The system control module 110 also inputs the MCU_FRONT_WIPER_INH signal to pin 3 of device U4 of the wiper power supply control module 150, and controls the sleep and enable of device U4 by controlling the high and low level changes of the signal. The size of the external resistor of pin 5 SR can adjust the time when the MOS tube is turned on and off, and has the function of preventing electromagnetic interference. The output voltage of pins 4 and 8 of device U4 is finally transmitted to the wiper device (in Figure 3 The device U4 can sample the load current (i.e., wiper motor current signal) of output pins 4 and 8, and output a signal MCU_FRONT_WIPER_IS (i.e., wiper motor voltage sampling signal) converted into a voltage form at pin 6, thereby monitoring the current value of the wiper motor and thus monitoring the status of the wiper motor (e.g., stall condition).

[0034] Now go to Figure 4 , Figure 4 FIG. 1 is a schematic diagram of an enable signal generating module 120 according to an embodiment of the present invention. Figure 4In the embodiment of the present invention, a comparator circuit based on an operational amplifier U7A is shown, and the comparator circuit serves as a linkage logic enabling function module of the window heating control module 130, the window cleaning control module 140 and the wiper power supply control module 150. The wiper motor voltage sampling signal MCU_FRONT_WIPER_IS from the wiper power supply control module 150 is input to the same direction end of the operational amplifier U7A, and the preset voltage threshold is input to the inverting end. The preset voltage threshold is obtained by dividing the vehicle power supply voltage VBAT (for example, provided by a 12V battery) using two voltage-dividing resistors R23 and R24 with specific resistance values. The resistance values ​​of the two voltage-dividing resistors R23 and R24 are selected so that the voltage value therebetween corresponds to the voltage sampling value obtained by converting the voltage sampling value that should be output by pin 6 of U4 when the window wiper motor is blocked. When the MCU_FRONT_WIPER_IS voltage input to the in-phase terminal of U7A is less than the preset voltage threshold of the reverse terminal, the output pin 1 of U7A outputs a low level, indicating that the wiper motor is not in the stall mode at this time. When the MCU_FRONT_WIPER_IS voltage input to the in-phase terminal is greater than the preset voltage threshold connected to the reverse terminal, the output pin 1 of the comparator U7A outputs a high level wiper motor status signal, indicating that the wiper motor is in the stall state at this time.

[0035] The wiper motor status signal together with the above Figure 2 The vehicle status signal ECM_EN_Signal (via NOT gate U9) and the window status signal Window_Lock_Signal are input to AND gate U8 for logic judgment. When the voltage sampling value is greater than the preset voltage threshold, the comparator outputs a high level. When the vehicle is stationary, the vehicle status signal is low, and the signal is high after passing through the NOT gate. When the window is closed or locked, the window status signal is high. Only when the above three conditions are met at the same time, that is, the voltage sampling value is greater than the preset voltage threshold (indicating that the wiper motor is blocked), the vehicle is stationary and the window is closed at the same time, the AND gate outputs a high-level linkage enable signal Stall Current Enable.

[0036] Therefore, when the window heating device or the window cleaning device is started by the window and wiper control system 100 according to the present invention under the intelligent control of the vehicle, (in addition to determining that the wiper motor is in a blocked state) it is also necessary to meet the conditions that the vehicle is stationary and the windows are raised or locked, thereby preventing the window heating device or the window cleaning device from being started when the vehicle is moving or the windows are open, thereby preventing the vehicle owner from having a safety hazard.

[0037] Next, go to Figure 5 , Figure 5 FIG. 1 is a schematic diagram of a vehicle window heating control module 130 according to an embodiment of the present invention. Figure 5 In the embodiment, the system heating enable signal Defog_IN and the linkage enable signal Stall Current Enable are respectively connected to the No. 2 pin of the device U5 via a unidirectional conducting diode. Any signal in the enabled state (high level) can control the window heating control module 130 to output a high level VBAT heating control signal at the output pins 5, 6, and 7. Thus, the window heating device, such as the heating wire, is started to defog, defrost, and de-ice the window, so as to solve or alleviate the problem of window wiper blocking to a certain extent.

[0038] Next, go to Figure 6 and Figure 7 , Figure 6 and Figure 7 FIG. 1 is a schematic diagram of a window cleaning control module 140 according to an embodiment of the present invention. In one embodiment, the motor for window cleaning can be controlled by two devices U2 and U3 (respectively as Figure 7 and Figure 6 ) are driven simultaneously so that the window cleaning motor rotates forward when the wiper is blocked and enabled by the linkage enable signal. Figure 7 In the example, the linkage enable signal Stall Current Enable first adds a non-gate U1, and then connects to the No. 2 pin of the device U2 together with the system cleaning enable signal MCU_Washer_R_IN. If any one of the conditions that the linkage enable signal is high and the system cleaning enable signal MCU_Washer_R_IN is low is met, the output pins 4 and 8 can output a low level. Figure 6 In the embodiment, the linkage enable signal Stall Current Enable and the system washing enable signal MCU_Washer_F_IN are connected to the pin 2 of the device U3. When either the linkage enable signal or the system washing enable signal MCU_Washer_F_IN is at a high level, the output pins 4 and 8 can output a high level. Thus, when the linkage enable signal is enabled, the output pins (pins 4 and 8) of U2 output a low-level washing control signal, and the output pins (pins 4 and 8) of U3 output a high-level washing control signal. The high and low-level washing control signals are respectively applied to both sides of the passage of the motor for window washing, thereby driving the window washing device in the same direction to wash away the sand, dust, dirt, etc. that may accumulate on the window, so as to solve or alleviate the problem of window wiper blocking to a certain extent. The connection and use methods of the other pins of the devices U2 and U3 are similar to those described for the device U4, so they are not described repeatedly.

[0039] When the linkage enable signal is used to enable the window heating control module 130 and the window cleaning control module 140, if any one of the three conditions that the wiper motor status signal output by U7A is set high, the vehicle status signal ECM_EN_Signal is set low, and the window status signal Window_Lock_Signal is set high is not met, the window and wiper control system 100 including the window heating control module 130, the window cleaning control module 140 and the wiper power supply control module 150 is not enabled. The logic truth table of some signals in the window and wiper control system 100 is shown in Table 1 below.

[0040]

[0041] In Table 1, 1 represents a high level and 0 represents a low level. The signal output by U7A in the first column is a linkage enable signal, the second column ECM_EN_Signal is a vehicle status signal, the third column Window_Lock_Signal is a window status signal, and the fourth column Stall Current Enable is a linkage enable signal. NC in the last row of the table means "don't consider", that is, as long as the output of U7A is 0 (the wiper motor is not in a stalled state), regardless of the vehicle status signal and the window status signal, the linkage enable signal is a low level, that is, the window heating device or the window cleaning device is not started through the window and wiper control system 100 according to the present invention.

[0042] In the present invention, the devices U5, U2, U3, and U4 in the window heating control module 130, the window cleaning control module 140, and the wiper power supply control module 150 are preferably intelligent high-side switches (e.g., intelligent high-side MOSFETs) rather than traditional relays to implement the power on / off function.

[0043] In one embodiment, the intelligent high-side MOSFET is a PROFET and half-bridge driver chip series of Infineon. The device U4 in the wiper power supply control module 150 uses the BTN8982TA half-bridge driver chip; the devices U2 and U3 in the window cleaning control module 140 use the BTN8962TA half-bridge driver chip; and the device U5 in the window heating control module 130 uses the BTS50015-1TAD PROFET chip. The power levels of the above three intelligent high-side MOSFET devices can meet the power level requirements of the existing window wipers, window cleaning devices and window heating devices.

[0044] Compared with traditional relay control circuits (such as Figure 1As shown in FIG. 1 ), the control circuit composed of the intelligent high-side MOSFET has the advantages of low conduction power consumption, better NVH performance, and faster switching speed. At the same time, this series of intelligent high-side MOSFETs also has the function of sampling the output load current, that is, converting the sampled output load current to the AD analog output port for collection by the AD sampling port of the system control module 110, and thereby monitoring and protecting the load current of each module.

[0045] Reference now Figure 8 , Figure 8 FIG. 2 is a schematic flow chart of a vehicle window and wiper control method 200 according to an embodiment of the present invention.

[0046] In the vehicle window and wiper control method 200, on the one hand, the vehicle window wiper, the vehicle window heating device and the vehicle window cleaning device can be enabled by a system wiper enable signal, a system heating enable signal and a system cleaning enable signal (process Figure 8 On the other hand, a voltage sampling value converted from a load current sampling value when the wiper motor is working can be provided (S201), and a comparison result can be obtained by comparing it with a preset voltage threshold through a subsequent comparator. The comparison result, the vehicle status signal (e.g., the electronic control module ECM enable signal), and the window status signal (e.g., the window lock signal) are logically judged by a logic gate circuit, and a linkage enable signal (S202) is output by the logic gate to control the enablement of the window heating control module 130 and the window cleaning control module 140 (S203).

[0047] For example, when the voltage sampling value is greater than a preset voltage threshold, the comparator outputs a high level. When the vehicle is stationary and the window is closed or locked, that is, the voltage sampling value is greater than the preset voltage threshold (indicating that the wiper motor is blocked), the vehicle is stationary, and the window is closed, a high-level linkage enable signal is output to enable the window heating control module 130 and the window cleaning control module 140.

[0048] The following is a detailed description Figure 8 The operations of each step in .

[0049] First, in response to the system wiper enable signal, the MCU_FRONT_WIPER_IN signal is input to pin 2 of device U4 (for example, model BTN8982TA) of the wiper power supply control module 150, and the high and low level changes of the signal are controlled to realize the control of power supply or grounding of output pins 4 and 8. Pin 7 and pin 1 are respectively connected to high level and low level for selective output as described above. The MCU_FRONT_WIPER_INH signal can also be input to pin 3 of device U4 of the wiper power supply control module 150, and the sleep and enable control of device U4 can be realized by controlling the high and low level changes of the signal. The size of the external resistor of pin 5 SR can adjust the turn-on and turn-off time of the MOS tube, and has the function of preventing electromagnetic interference. The output voltage of pins 4 and 8 of device U4 is finally transmitted to the wiper device (in Figure 3 In step S201, the load current (i.e., wiper motor current signal) of output pins 4 and 8 can be sampled through device U4, and a signal MCU_FRONT_WIPER_IS (i.e., wiper motor voltage sampling signal) converted into a voltage form is output at pin 6, thereby monitoring the current value of the wiper motor and thus monitoring the state of the wiper motor (e.g., stall condition).

[0050] In step S202, use Figure 4 The circuit shown in is used to generate the linkage enable signal. The wiper motor voltage sampling signal MCU_FRONT_WIPER_IS is input to the same direction terminal of the operational amplifier U7A, and the preset voltage threshold is input to the inverting terminal. The preset voltage threshold is obtained by dividing the vehicle power supply voltage VBAT (for example, provided by a 12V battery) using two voltage-dividing resistors R23 and R24 with specific resistance values. The resistance values ​​of the two voltage-dividing resistors R23 and R24 are selected so that the voltage value therebetween corresponds to the voltage sampling value that should be output by pin 6 of U4 when the window wiper motor is blocked. When the MCU_FRONT_WIPER_IS voltage input to the same direction terminal of U7A is less than the preset voltage threshold at the reverse end, the output pin 1 of U7A outputs a low level, indicating that the wiper motor has not entered the blocked mode at this time. When the MCU_FRONT_WIPER_IS voltage input at the in-phase end is greater than the preset voltage threshold connected to the reverse end, the output pin 1 of the comparator U7A outputs a high-level wiper motor status signal, indicating that the wiper motor is in a stalled state at this time.

[0051] The wiper motor status signal, together with the vehicle status signal ECM_EN_Signal (through the NOT gate U9) and the window status signal Window_Lock_Signal, are input into the AND gate U8 for logic judgment. When the voltage sampling value is greater than the preset voltage threshold, the comparator outputs a high level. When the vehicle is stationary, the vehicle status signal is low, and the signal is high after passing through the NOT gate. When the window is closed or locked, the window status signal is high. Only when the above three conditions are met at the same time, that is, the voltage sampling value is greater than the preset voltage threshold (indicating that the wiper motor is blocked), the vehicle is stationary and the window is closed at the same time, the AND gate outputs a high-level linkage enable signal Stall Current Enable.

[0052] Therefore, when the window heating device or the window cleaning device is started by the window and wiper control method 200 according to the present invention under the intelligent control of the vehicle, (in addition to determining that the wiper motor is in a blocked state) it is also necessary to meet the conditions that the vehicle is stationary and the windows are raised or locked, thereby preventing the window heating device or the window cleaning device from being started when the vehicle is moving or the windows are open, thereby preventing the safety hazard to the vehicle owner.

[0053] In step S203, on the one hand, the system heating enable signal Defog_IN and the linkage enable signal StallCurrent Enable are respectively connected to the No. 2 pin of the device U5 via a unidirectional conducting diode, and any signal in the enabled state (high level) can control the window heating control module 130 to output a high level VBAT heating control signal at output pins 5, 6, and 7. Thus, the window heating device, such as the heating wire, is started to defog, defrost, and de-ice the window, so as to solve or alleviate the problem of window wiper blocking to a certain extent.

[0054] On the other hand, two devices U2 and U3 (the circuit diagrams of which are shown in FIG. Figure 7 and Figure 6 ) and simultaneously drives the motor for window washing, so that the window washing motor rotates forward when the wiper is blocked and enabled by the linkage enable signal. Among them, the linkage enable signal Stall Current Enable is first added with a non-gate U1, and then connected to the No. 2 pin of the device U2 together with the system washing enable signal MCU_Washer_R_IN. If any one of the conditions that the linkage enable signal is high and the system washing enable signal MCU_Washer_R_IN is low is met, the output pins 4 and 8 can output a low level. Figure 6In the embodiment, the linkage enable signal Stall Current Enable and the system washing enable signal MCU_Washer_F_IN are connected to the pin 2 of the device U3. When either the linkage enable signal or the system washing enable signal MCU_Washer_F_IN is at a high level, the output pins 4 and 8 can output a high level. Thus, when the linkage enable signal is enabled, the output pins (pins 4 and 8) of U2 output a low-level washing control signal, and the output pins (pins 4 and 8) of U3 output a high-level washing control signal. The high and low-level washing control signals are respectively applied to both sides of the passage of the motor for window washing, thereby driving the window washing device in the same direction to wash away the sand, dust, dirt, etc. that may accumulate on the window, so as to solve or alleviate the problem of window wiper blocking to a certain extent. The connection and use methods of the other pins of the devices U2 and U3 are similar to those described for the device U4, so they are not described repeatedly.

[0055] Although the generation of the cleaning control signal and the heating control signal are both shown in step S203, it is understandable that these two steps can occur successively, simultaneously, multiple times, alternately, etc. without limitation.

[0056] When the linkage enable signal is used to enable the window heating control module 130 and the window cleaning control module 140, if any one of the three conditions, namely, the wiper motor status signal output by U7A is set high, the vehicle status signal ECM_EN_Signal is set low, and the window status signal Window_Lock_Signal is set high, is not met, the window and wiper control method 200 does not generate an enabled linkage enable signal.

[0057] In the vehicle window and wiper control method 200 according to the present invention, one or more of the wiper motor voltage sampling signal, the heating control signal and the cleaning control signal are preferably obtained by using an intelligent high-side switch (for example, an intelligent high-side MOSFET) instead of using a traditional relay to realize the power on-off function.

[0058] According to another aspect of the present invention, a computer-readable storage medium is provided, on which program instructions executable by a processor are stored, and when the program instructions are executed by the processor, the method according to any embodiment of one aspect of the present invention is performed.

[0059] According to yet another aspect of the present invention, a vehicle is provided, comprising the system according to any one embodiment of one aspect of the present invention.

[0060] The foregoing disclosure is not intended to limit the disclosure to the precise form disclosed or to the particular field of use. Therefore, it is contemplated that various alternative embodiments and / or modifications of the disclosure are possible in light of the present disclosure, whether explicitly described or implied herein. Having thus described embodiments of the disclosure, it will be appreciated by those of ordinary skill in the art that changes may be made in form and detail without departing from the scope of the disclosure. Therefore, the disclosure is limited only by the claims.

Claims

1. A vehicle window and wiper control system, comprising: A wiper power supply control module, configured to provide a wiper motor voltage sampling signal for generating a wiper motor status signal; an enable signal generating module, configured to generate a linkage enable signal based on the wiper motor status signal; a vehicle window heating control module configured to generate a heating control signal for the vehicle window based on at least one of the linkage enable signal and the system heating enable signal; as well as a vehicle window cleaning control module configured to generate a cleaning control signal for the vehicle window based on at least one of the linkage enable signal and the system cleaning enable signal; Wherein, the enabling signal generating module is further configured to generate the linkage enabling signal based on the window status signal and the vehicle status signal; Wherein, when the wiper motor status signal indicates that the wiper motor is blocked, the window status signal indicates that the window is locked, and the vehicle status signal indicates that the vehicle is stationary, the linkage enable signal is generated to enable.

2. The system according to claim 1, wherein: One or more of the wiper motor voltage sampling signal, the heating control signal and the cleaning control signal is obtained by an intelligent high-side switch.

3. A vehicle window and wiper control method, comprising: Providing a wiper motor voltage sampling signal for generating a wiper motor status signal; generating a linkage enable signal based on the wiper motor status signal; generating a heating control signal for the vehicle window based on at least one of the linkage enable signal and the system heating enable signal; generating a cleaning control signal for the vehicle window based on at least one of the linkage enable signal and the system cleaning enable signal; generating the linkage enabling signal based on the window status signal and the vehicle status signal; Wherein, when the wiper motor status signal indicates that the wiper motor is blocked, the window status signal indicates that the window is locked, and the vehicle status signal indicates that the vehicle is stationary, the linkage enable signal is generated to enable.

4. The method according to claim 3, wherein: One or more of the wiper motor voltage sampling signal, the heating control signal and the cleaning control signal is obtained by an intelligent high-side switch.

5. A computer-readable storage medium having stored thereon program instructions executable by a processor, wherein when the program instructions are executed by the processor, the method according to any one of claims 3 to 4 is executed.

6. A vehicle comprising the system according to any one of claims 1-2.

Images