Vehicle window testing system and vehicle window testing method

Abstract

The invention provides a vehicle window test system and a vehicle window test method, and the vehicle window test system not only samples the operation parameters of a vehicle window motor through a sampling module, but also samples the pressure information of the upper edge of a vehicle window through a pressure sensor, and samples the displacement information of vehicle window glass through a displacement sensor. Therefore, the electronic equipment can perform multi-angle analysis on the vehicle window system according to the multi-path sampling information corresponding to each sampling moment, and abnormal vehicle window parts and / or regulation and control methods in the vehicle window can be determined more accurately.

Description

Technical Field

[0001] The present application relates to the field of test control, and in particular to a vehicle window test system and a vehicle window test method. Background Art

[0002] The electric windows of a car can easily pinch passengers when they are closed, so the anti-pinch function is a necessary function of the vehicle to ensure the safety of the car windows.

[0003] In the related art, the current value of the window motor when it is running is generally sampled, and the window control unit determines the number of rotations of the motor based on the amount of ripples in the current, thereby determining the distance between the upper edge of the window glass driven by the window motor and the top of the window, so as to adjust the operating state of the window motor when the distance is less than a preset distance threshold to achieve anti-pinch.

[0004] When the ripple quality is too poor, the window control unit will over-count or under-count the ripple, causing false anti-pinch and non-anti-pinch faults, which will harm the health of passengers. It is necessary to test the window control when there is a fault to determine the cause of the fault. Generally, the current of the window motor is sampled by an oscilloscope, and the fault of the window is determined based on the current ripple. However, the variables for determining the window fault are relatively single, and the results of the window fault analysis are prone to deviation. Therefore, how to accurately determine the window fault information has become the focus of research. Summary of the invention

[0005] The present application provides a vehicle window testing system and a vehicle window testing method to solve the above technical problems.

[0006] In a first aspect, the present application provides a vehicle window testing system, which is electrically connected to a vehicle window system, wherein the vehicle window system includes a vehicle window motor and a vehicle window controller;

[0007] The vehicle window testing system comprises:

[0008] A sampling module, electrically connected to the window motor, and configured to sample operating parameters of the window motor;

[0009] A displacement sensing module is configured to sample position information of a vehicle window glass;

[0010] A pressure sensing module, configured to sample pressure information of the upper edge of the vehicle window glass;

[0011] an electronic device, electrically connected to the sampling module, and configured to obtain sampling information in response to a test trigger instruction, wherein the sampling information is information determined based on the operating parameter, the position information, and the pressure information;

[0012] Based on the sampling information, a vehicle window test result is determined.

[0013] In the above technical solution, the window test system not only samples the operating parameters of the window motor through the sampling module, but also samples the pressure information of the upper edge of the window through the pressure sensor, and the displacement sensor samples the displacement information of the window glass, so that the electronic device can perform multi-angle analysis of the window system according to the multi-channel sampling information corresponding to each sampling moment, and can more accurately determine the abnormal window components and / or control methods in the window.

[0014] In some feasible embodiments, the operating parameters include operating current and driving voltage;

[0015] The sampling module comprises:

[0016] A sampling analog front end is electrically connected to the window motor and the window controller, and is configured to obtain the operating current of the window motor and output a first sampling analog voltage signal;

[0017] Obtaining driving voltages at both ends of the window motor, and outputting a second sampled analog voltage signal and a third sampled analog voltage signal;

[0018] an analog-to-digital sampling conversion circuit, electrically connected to the sampling analog front end, configured to synchronously sample and convert the first sampling analog voltage signal, the second sampling analog voltage signal, and the third sampling analog voltage signal, and correspondingly output a first voltage digital signal, a second voltage digital signal, and a third voltage digital signal that change synchronously;

[0019] The sampling information includes the first voltage digital signal, the second voltage digital signal, and the third voltage digital signal.

[0020] In the above technical solution, the electronic device processes the analog electrical signal sampled by the sampling analog front end and the information sampled by the sensor module through an analog-to-digital sampling conversion circuit with adjustable resolution and sampling rate. Compared with a low-resolution oscilloscope that directly analyzes the sampled data, it can improve the resolution and accuracy of the sampled data, thereby improving the accuracy of the vehicle window test results.

[0021] In some feasible embodiments, the sampling analog front end includes a first connector and a second connector;

[0022] The first connector is electrically connected to the motor connector of the window motor, and the second connector is electrically connected to the wiring harness connector of the window controller;

[0023] The first connector is of the same type as the wiring harness connector, and the second connector is of the same type as the motor connector.

[0024] In the above technical solution, the sampling analog front end of the sampling module is provided with a first connector and a second connector. The first connector is of the same type as the wiring harness connector, and the second connector is of the same type as the motor connector. It can be electrically connected to the window motor and the window controller without breaking the wires, thereby reducing the connection difficulty and improving the detection flexibility.

[0025] In some feasible embodiments, the first pin of the motor connector is electrically connected to the first pin of the first connector, and the second pin of the motor connector is electrically connected to the second pin of the first connector;

[0026] The first pin of the wiring harness connector is electrically connected to the first pin of the second connector, and the second pin of the wiring harness connector is electrically connected to the second pin of the second connector;

[0027] The first pin of the first connector is electrically connected or coupled to the first pin of the second connector;

[0028] The second pin of the first connector is electrically connected or coupled to the second pin of the second connector.

[0029] In the above technical solution, the two pins of the motor connector and the two pins of the first connector are electrically connected to each other, the two pins of the wiring harness connector and the two pins of the second connector are electrically connected to each other, and the corresponding pins of the two connectors are electrically connected or coupled, so that when the sampling analog front end is connected between the window motor and the window controller, it will not affect the conduction circuit constructed by the window motor and the window controller, and will not affect the driving effect of the window controller on the window motor.

[0030] In some feasible embodiments, the sampling analog front end further includes:

[0031] a current sampling resistor, the current sampling resistor being electrically connected between a first pin of the first connector and a first pin of the second connector, or the current sampling resistor being electrically connected between a second pin of the first connector and a second pin of the second connector, the current sampling resistor being configured to obtain a running current of the window motor and output a fourth sampling analog voltage signal;

[0032] A signal conditioning circuit, wherein an input port of the signal conditioning circuit is electrically connected to two ends of the current sampling resistor, and is configured to amplify and enhance the fourth sampled analog voltage signal and output the first sampled analog voltage signal.

[0033] In some feasible embodiments, the sampling analog front end further includes a first voltage divider circuit and a second voltage divider circuit;

[0034] The first end of the first voltage divider circuit is electrically connected to the second pin of the first connector and the second pin of the second connector, the second end of the first voltage divider circuit is grounded, and the voltage divider end of the first voltage divider circuit is electrically connected to the analog-to-digital sampling conversion circuit to output the second sampling analog voltage signal;

[0035] The first end of the second voltage divider circuit is electrically connected to the first pin of the first connector, the second end thereof is grounded, and the voltage divider end thereof is electrically connected to the analog-to-digital sampling conversion circuit to output the third sampling analog voltage signal.

[0036] In a second aspect, the present application provides a vehicle window testing method, the method is applied to an electronic device in a vehicle window testing system, the vehicle window testing system further comprising a sampling module, a displacement sensing module and a pressure sensing module, the sampling module, the displacement sensing module and the pressure sensing module are electrically connected to the electronic device respectively;

[0037] The method comprises:

[0038] Obtaining sampling information, where the sampling information is determined based on the operating parameters sampled by the sampling module, the position information of the vehicle window glass sampled by the displacement sensing module, and the pressure information of the upper edge of the vehicle window glass sampled by the pressure sensing module;

[0039] Based on the sampling information, a vehicle window test result is determined.

[0040] In some feasible embodiments, determining the vehicle window test result based on the sampling information includes:

[0041] Determine feature information corresponding to the sampling information based on a preset data processing algorithm;

[0042] Determine a vehicle window test result based on the feature information and the sampling information, wherein the vehicle window test result includes a state index and / or a control index of a vehicle window component;

[0043] In some feasible embodiments, the operating parameters include operating current and driving voltage;

[0044] The sampling information includes a first voltage digital signal, a second voltage digital signal, a third voltage digital signal, a position digital signal and a pressure digital signal;

[0045] The first voltage digital signal is a sampled electrical signal corresponding to the operating current;

[0046] The second voltage digital signal and the third voltage digital signal are sampled electrical signals corresponding to the driving voltage;

[0047] The position digital signal is a sampled electrical signal corresponding to the position information of the vehicle window glass;

[0048] The pressure digital signal is a sampled electrical signal corresponding to the pressure information on the upper edge of the vehicle window glass;

[0049] The determining, based on a preset data processing algorithm, characteristic information corresponding to the sampling information specifically includes:

[0050] When the window motor is running, based on the first voltage digital signal, calculating the operating index data of the window motor and the movement change amount of the window transmission structure connected to the window motor;

[0051] determining a power supply parameter of the window motor based on the second voltage digital signal and the third voltage digital signal;

[0052] Calculating the moving speed and position of the vehicle window glass based on the position digital signal;

[0053] Based on the pressure digital signal, the squeezing pressure and the squeezing pressure change rate of the upper edge of the vehicle window glass are calculated.

[0054] In some feasible embodiments, the first voltage digital signal includes a ripple digital signal and a drive current mapping digital signal; the drive current mapping digital signal is a sampled voltage digital signal corresponding to the motor drive current;

[0055] The step of calculating the operating index data of the window motor and the movement variation of the window transmission structure connected to the window motor based on the first voltage digital signal includes:

[0056] Based on the ripple digital signal, calculating index information of the current ripple of the window motor, the index information including ripple distortion, ripple frequency, and ripple quantity;

[0057] determining a rotational speed of the window motor based on the ripple frequency;

[0058] Determine the number of rotations and the phase increment of the window motor based on the ripple quantity to determine the calculated displacement of the window transmission structure in the window system as the calculated displacement of the window glass; the window transmission structure is connected between the window motor and the window glass;

[0059] Determining the calculated position of the vehicle window glass in the full stroke based on the calculated displacement of the vehicle window glass and the glass starting position;

[0060] Calculating a torque value, a torque change rate, and a torque direction of the window motor based on the current mapping digital signal;

[0061] The determining the power supply parameter of the window motor based on the second voltage digital signal and the third voltage digital signal includes:

[0062] Based on the voltage difference between the second voltage digital signal and the third voltage digital signal, a voltage value and a voltage polarity of the window motor operating voltage are determined.

[0063] In some feasible embodiments, determining the vehicle window test result based on the feature information and the sampling information specifically includes:

[0064] When the ripple distortion is greater than a distortion threshold, determining that the window motor is operating abnormally;

[0065] When the ripple distortion degree is less than the distortion threshold, the vehicle window test result is determined based on multiple digital signals and multiple feature information corresponding to each sampling moment, and / or the change rate of the multiple digital signals and the feature information at multiple sampling moments.

[0066] In some feasible embodiments, determining the vehicle window test result based on the multiple digital signals and the multiple feature information corresponding to each sampling moment, and / or the change rate of the multiple digital signals and the feature information at multiple sampling moments, includes:

[0067] Determine the time difference between the first change moment of the first voltage digital signal and the moment when the pressure digital signal is greater than a preset anti-pinch force threshold as the squeezing force detection hysteresis delay;

[0068] Based on the squeeze force detection hysteresis delay, evaluating the anti-pinch detection timeliness of the window control unit;

[0069] The first change moment is when the window motor rotates forward and the pressure digital signal determined by the window controller based on the first voltage digital signal is greater than a preset anti-pinch force threshold; the window glass moves upward when the window motor rotates forward.

[0070] In the above technical solution, when the electronic device determines that the current waveform generated by the window motor is normal based on the ripple distortion degree, the electronic device determines the lag delay of the window control unit in performing the anti-squeezing operation based on the difference between the first change moment of the running current and the moment when the squeezing force at the upper edge of the window glass is greater than the preset anti-squeezing threshold. It can determine whether the window controller performs the anti-pinch operation in time, and also determine whether the window glass responds to the change in time after the window motor stops, so that the technicians can adjust the control algorithm and window components in time.

[0071] In some feasible embodiments, determining the vehicle window test result based on the multiple digital signals and the multiple feature information corresponding to each sampling moment, and / or the change rate of the multiple digital signals and the feature information at multiple sampling moments, includes:

[0072] Determining a period during which both the second voltage digital signal and the third voltage digital signal are at a preset low level as an anti-pinch execution period during which the vehicle window controller controls the vehicle window glass to perform an anti-pinch operation;

[0073] Determining the upward stopping time of the vehicle window glass based on the change of the position digital signal;

[0074] Determine the period between the start time of the anti-pinch execution period and the upward stop time of the vehicle window glass as the inertial rising period of the vehicle window glass when the vehicle window controller controls the vehicle window anti-pinch;

[0075] Determine the difference between the window glass position corresponding to the start time of the anti-pinch execution period and the window glass position corresponding to the upward stop time of the window glass as the inertial rising distance of the window glass when the window controller controls the window anti-pinch;

[0076] Based on the inertia rising period and the inertia rising distance of the vehicle window glass, a vehicle window glass travel operation algorithm of the vehicle window controller is adjusted.

[0077] In some feasible embodiments, adjusting the window glass travel operation algorithm of the window controller based on the inertia rising period and the inertia rising distance of the window glass includes:

[0078] When the window controller determines that the window glass is in an inertia rising period based on the change in the driving voltage of the window motor, the inertia rising distance is used to compensate the determined upward position of the window glass;

[0079] The running up position of the window glass is calculated by the window controller based on the number of ripples obtained before the inertia rising period.

[0080] In the above technical scheme, the electronic device determines the braking execution period when the window controller controls the window glass to perform the braking operation through the change of the driving voltage of the window motor, and determines the upward stop moment of the window glass through the window glass position information sampled by the displacement sensor module, so as to determine the distance and duration that the window glass needs to rise based on its inertia when the window controller controls the window anti-pinch, so as to improve the calculation accuracy of the window controller for adjusting the window glass travel, improve the control accuracy of the window anti-pinch function, and adjust the time when the window controller performs the braking operation on the window glass based on the inertia rising period and inertia rising distance of the window glass, so as to prevent the window from damaging the passengers.

[0081] In some feasible embodiments, after determining the anti-pinch execution period, the method further includes:

[0082] Determining the starting time of the downward movement of the vehicle window glass based on the change of the position digital signal;

[0083] Determine the period between the starting moment of the downward movement of the vehicle window glass and the stopping moment of the anti-pinch execution period as the vehicle window anti-pinch reverse drive hysteresis period;

[0084] Based on the anti-pinch execution period and the window anti-pinch back-drive hysteresis period, a window motor control algorithm of the window controller is adjusted.

[0085] In some feasible embodiments, adjusting the window motor control algorithm of the window controller based on the anti-pinch execution period and the window anti-pinch back-drive hysteresis period includes:

[0086] Determining the sum of the duration of the anti-pinch execution period and the vehicle window anti-pinch reverse drive hysteresis period as the clamping time of the vehicle window glass;

[0087] When the clamping time is greater than a preset clamping time threshold, reducing the braking time in the window motor control algorithm;

[0088] The reduction value of the braking time is greater than or equal to the difference between the clamping time and the preset clamping time threshold.

[0089] In the above technical solution, the electronic device determines the braking time of the window motor through the change of the driving voltage of the window motor, determines the starting time of the downward movement of the window glass through the window glass position information sampled by the displacement sensor module, and determines the delay time between the reversal of the window motor and the start of the downward movement of the window glass, thereby adjusting the braking time of the window motor to prevent the window from clamping objects for too long and causing damage to the clamped objects.

[0090] In some feasible embodiments, the vehicle window testing system further includes a temperature sensing module, and the temperature sensing module is electrically connected to the electronic device.

[0091] The determining of the vehicle window test result based on the multiple digital signals and the multiple feature information corresponding to each sampling moment, and / or the change rate of the multiple digital signals and the feature information at multiple sampling moments, comprises:

[0092] When the window control unit controls the window motor to operate, based on the ambient temperature sampled by the temperature sensing module, the operating voltage of the window motor, the torque value of the window motor and the moving speed of the window glass, the state of the window transmission system and the rubber strip is determined, and the state includes a normal state or an abnormal state;

[0093] The vehicle window system comprises the vehicle window transmission system, and the vehicle window transmission system is connected between the vehicle window motor and the vehicle window glass.

[0094] In some feasible embodiments, when the window control unit controls the window motor to operate, determining the state of the window transmission system based on the ambient temperature sampled by the temperature sensing module, the operating voltage of the window motor, the torque value of the window motor and the moving speed of the window glass includes:

[0095] determining a torque range corresponding to the window motor based on the ambient temperature;

[0096] When the change rate of the working voltage of the window motor is greater than a preset voltage change rate threshold, the change rate of the moving speed of the window glass is less than a preset speed change rate threshold, and the torque value of the window motor exceeds the torque range, it is determined that the window transmission system is in an abnormal state.

[0097] In some feasible embodiments, when the window control unit controls the window motor to operate, the state of the rubber strip is determined based on the ambient temperature sampled by the temperature sensing module, the operating voltage of the window motor, the torque value of the window motor and the moving speed of the window glass, including:

[0098] When the change rate of the working voltage of the window motor is greater than a preset voltage change rate threshold, the change rate of the moving speed of the window glass is less than a preset speed change rate threshold, and the change rate of the torque value of the window motor is greater than a preset torque change rate threshold, it is determined that the rubber strip is in an abnormal state.

[0099] In the above technical solution, the window controller determines that the movement of the window glass is abnormal when the rate of change of the moving speed of the window glass is less than a preset speed change rate threshold. Based on the changes in the working voltage of the window motor and the torque value of the window motor under the current ambient temperature, it can further determine that there are abnormal window transmission systems and rubber strips, and replace or adjust the abnormal parts in time.

[0100] The present application provides a vehicle window testing system and a vehicle window testing method. The vehicle window testing system not only samples the operating parameters of the vehicle window motor through a sampling module, but also samples the pressure information of the upper edge of the vehicle window through a pressure sensor, and samples the displacement information of the vehicle window glass through a displacement sensor, so that the electronic device can perform multi-angle analysis on the vehicle window system according to the multi-channel sampling information corresponding to each sampling moment, and can more accurately determine the abnormal vehicle window components and / or control methods in the vehicle window. BRIEF DESCRIPTION OF THE DRAWINGS

[0101] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0102] Figure 1A schematic structural diagram of a vehicle window system provided by the present application according to an exemplary embodiment;

[0103] Figure 2 A schematic diagram of a waveform of an operating current of a vehicle window motor provided by the present application according to an exemplary embodiment;

[0104] Figure 3 A waveform diagram of a distorted operating current of a vehicle window motor provided by the present application according to an exemplary embodiment;

[0105] Figure 4 A schematic structural diagram of a vehicle window testing system provided by the present application according to another exemplary embodiment;

[0106] Figure 5 A vehicle window testing method provided by the present application according to another exemplary embodiment;

[0107] Figure 6 A schematic diagram of a sampling waveform provided by the present application according to an exemplary embodiment;

[0108] Figure 7 A schematic structural diagram of a vehicle window testing system provided by the present application according to another exemplary embodiment;

[0109] Figure 8 A schematic structural diagram of a vehicle window testing system provided by the present application according to another exemplary embodiment;

[0110] Fig. 9 A schematic diagram of the connection relationship between a sampling analog front end and a vehicle window system provided by the present application according to an exemplary embodiment;

[0111] Fig.10 A schematic diagram of the connection relationship between a sampling analog front end and a vehicle window system provided by the present application according to another exemplary embodiment;

[0112] Fig.11 A schematic structural diagram of a vehicle window testing system provided by the present application according to another exemplary embodiment;

[0113] Fig.12 A schematic structural diagram of a vehicle window testing system provided by the present application according to another exemplary embodiment;

[0114] Fig.13 It is a schematic diagram of the structure of an electronic device provided by the present application according to an exemplary embodiment.

[0115] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0116] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0117] The automobile electric window system includes window glass, rubber strips, window frames, window motors and window controllers, wherein the window motors are connected to the window glass via cables, the window glass is inserted into the slot of the window frame and sealed via rubber strips. The window controller is electrically connected to the window motor to control the rotation direction and speed of the window motor to drive the window glass to move upward or downward or to remain in a fixed position.

[0118] Reference below Figure 1 The circuit structure shown explains the connection relationship and control process between the window motor 00 and the window controller 11.

[0119] The window controller 11 includes a window control unit 115 , an amplifying and filtering circuit 116 , a first resistor R1 , and four switching devices (a first switching device 111 to a fourth switching device 114 ).

[0120] Four switching devices form an H drive bridge, wherein the first switching device 111 and the third switching device 113 form a first bridge arm, and the second switching device 112 and the fourth switching device 114 form a second bridge arm. A wiring harness connector is provided at the midpoint of the two bridge arms. The wiring harness connector is provided with a first pin B' and a second pin A', which are respectively plugged into the first pin B and the second pin A of the motor connector of the window motor 00 to achieve electrical connection.

[0121] The upper bridge arm endpoints of the above two bridge arms are both electrically connected to the power supply 10, and the lower bridge arm endpoints are both grounded through the first resistor R1.

[0122] The control ends of the four switch devices are electrically connected to the window control unit 115. When the window control unit 115 drives the window motor 00 to operate, it can control the first switch device 111 and the fourth switch device 114 to be turned on at the same time, so that the first driving path is turned on. The first driving path includes: power supply 10, first switch device 111, window motor 00, fourth switch device 114, first resistor R1, ground wire. The current direction of the window motor 00 is from left to right, and its corresponding rotation direction is the first rotation direction.

[0123] In some embodiments, the first rotation direction can be set as a direction for driving the vehicle window glass to rise.

[0124] When the window control unit 115 drives the window motor 00 to operate, it can also control the second switch device 112 and the third switch device 113 to be turned on at the same time, so that the second driving path is turned on. The second driving path includes: power supply 10, second switch device 112, window motor 00, third switch device 113, first resistor R1, ground wire. The current direction of the window motor 00 is from right to left, and its corresponding rotation direction is the second rotation direction.

[0125] In some embodiments, the second rotation direction can be set to a direction for driving the vehicle window glass to descend.

[0126] In the process of controlling the rotation of the window motor 00 , the window control unit 115 can adjust the conduction time of the above two driving paths by adjusting the duty cycle of the control signal, thereby adjusting the rotation speed of the window motor 00 .

[0127] The window control unit 115 can also control the third switch device 113 and the fourth switch device 114 to be turned on at the same time to brake the window motor 00, and then control all four switch devices to be turned off.

[0128] During the operation of the H drive bridge, the amplifying and filtering circuit 116 electrically connected to the first end of the first resistor R1 can sample the voltage value of the first end of the first resistor R1 to obtain the current value passing through the window motor 00, and after filtering and amplifying the sampled signal, feed it back to the window control unit 115, so that the window control unit 115 can regulate the operation of the window motor 00 to ensure the stable operation of the window motor 00.

[0129] Since the window motor 00 is connected to the window glass, the moving distance of the window glass can be determined by counting the number of rotations of the window motor 00, thereby determining the current position of the window glass.

[0130] When the window motor 00 rotates, ripples are generated, and the ripples are loaded on the driving current. The waveform diagram of the driving current is as follows: Figure 2 As shown, multiple ripples are loaded on a DC current of 7A. Generally, a preset number of ripples will be generated for each rotation of the window motor 00. The window control unit 115 determines the rotation number and phase increment of the window motor 00 by counting the number of ripples, thereby determining the distance between the upper edge of the window glass driven by the window motor 00 and the top of the window, so as to adjust the operating state of the window motor 00 when the distance is less than a preset distance threshold to achieve anti-pinch.

[0131] When the ripple quality is too poor, distortion will occur, such as Figure 3As shown in the figure, some ripple cycles have large concave deformation (often called M wave), which has been split into two waveforms, which may cause the controller to over-count the ripples; in some cases, the amplitude of the waveform of some ripple cycles is significantly smaller and offset from the amplitude of the adjacent cycles, which may cause the controller to miss the ripple count. The fault phenomenon of false anti-pinch and non-anti-pinch is harmful to the health of passengers. It is necessary to test when there is a fault in the window control to determine the cause of the fault.

[0132] The detection of the car window is generally performed by sampling the current of the car window motor 00 through an oscilloscope, and then determining the fault of the car window based on the ripple of the current. The schematic diagram of the oscilloscope sampling can be referred to Figure 1 The clamp-type current probe of the oscilloscope 20 is inserted into one of the two power supply lines of the window motor 00. By operating the window lifting and lowering, the anti-pinch operation of the window is triggered to collect the ripple waveform during the operation of the window motor 00.

[0133] Since there is no fixed standard for on-site observable conditions, the variables for determining window failures are relatively single, and the causes of failures determined based on this are also biased. In addition, the oscilloscope has limited storage capacity and display image resolution, and can usually only record certain time periods in the full window raising / lowering stroke, and the recorded data resolution is low, which is not conducive to subsequent data-based fault analysis.

[0134] In addition, the window lifter in the car window is a moving part. The abnormality of the window anti-pinch function is affected not only by the mass of the window motor 00, but also by factors such as the deformation of the door / lifter and the hardness change of the glass strip / guide groove caused by the ambient temperature. All of these need to be checked for window failures.

[0135] Therefore, how to accurately determine the window fault information has become the focus of research.

[0136] The vehicle window testing system and vehicle window testing method provided by the present application are intended to solve at least one of the above technical problems. The technical concept of the present application is: when testing the operation of the vehicle window, not only the operation parameters of the vehicle window motor are sampled, but also the multi-channel sampling information corresponding to each sampling moment is combined with the sampled vehicle window position and the clamping force when clamping the object to perform multi-angle analysis on the vehicle window system, so as to more accurately determine the abnormal vehicle window components and / or control methods in the vehicle window.

[0137] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0138] Figure 4FIG. 1 is a structural schematic diagram of a vehicle window testing system provided by the present application according to another exemplary embodiment. Figure 4 As shown, the window test system 30 is electrically connected to the window system. The circuit structure of the window system is Figure 1 The corresponding embodiments have been explained and will not be described again here.

[0139] The vehicle window test system 30 includes a sampling module 27, which is electrically connected to the vehicle window motor 00 and is configured to sample the operating current and driving voltage of the vehicle window motor 00; the operating current includes the vehicle window motor driving current and the current ripple of the vehicle window motor;

[0140] The window motor driving current is the DC component of the operating current, which is used to drive the window motor 00 to rotate and adjust the torque of the window motor 00;

[0141] The current ripple of the window motor is the AC component of the operating current and is used to count the number of revolutions of the window motor 00.

[0142] The vehicle window testing system 30 may include a displacement sensing module 22 configured to sample position information of a vehicle window glass.

[0143] In some embodiments, the displacement sensor module 22 can be attached to the vehicle window or door.

[0144] In some embodiments, the displacement sensing module 22 includes a displacement sensor and a corresponding conditioning circuit. The displacement sensor is a displacement encoder that can output two pulse signals following the movement of the window. The longer the cycle of the pulse signal, the slower the window moves. The two pulse signals have different phases, and the moving direction of the window can be determined based on the phase relationship between the two pulse signals.

[0145] The conditioning circuit corresponding to the displacement sensor is a circuit for amplifying and enhancing the pulse signal output by the displacement sensor.

[0146] The vehicle window testing system 30 may include a pressure sensing module 23 configured to sample pressure information at the upper edge of the vehicle window glass.

[0147] In some embodiments, the pressure sensing module 23 is disposed on the upper edge of the vehicle window glass;

[0148] In some other embodiments, the pressure sensing module 23 is disposed on the upper side of the vehicle window;

[0149] When the car window rises and the window glass presses against an obstacle, a corresponding electrical signal will be generated, indicating pressure information. The further the window moves upward, the greater the pressure value, and the further the window moves downward, the smaller the pressure value.

[0150] In some embodiments, the pressure sensing module 23 includes a pressure sensor and a corresponding conditioning circuit, wherein the conditioning circuit corresponding to the pressure sensor is used to amplify and enhance the electrical signal output by the pressure sensor.

[0151] The sampling module 27 is electrically connected to the displacement sensing module 22 and the pressure sensing module 23, and is configured to synchronously sample multiple measurement analog signals and convert them into multiple digital signals; the measurement analog signals include operating current, driving voltage, pressure information and position information; and the multiple digital signals have synchronous timeliness.

[0152] Among them, the sampling rate of the sampling module 27, the resolution of the generated digital signal, and the channel attenuation are all fixed values, for example: the resolution is 116bit, the sampling frequency is 100kHz, and the channel attenuation is ±50A, which meets the accuracy requirements for the accuracy and change rate of each variable of the vehicle window and the accuracy requirements for the analysis of the ripple characteristic indicators.

[0153] In the prior art, the application scenarios of oscilloscopes are broader, and the above parameters need to be adjusted for different scenarios. When measuring a vehicle, it is necessary to calibrate the parameters in advance, which increases the measurement time. The adjusted parameters may also be inappropriate, affecting the sampling results. In addition, the resolution of the oscilloscope is low, and it is easy to produce waveform steps, which affects subsequent analysis. Compared with the related technology, the present application can improve sampling efficiency and sampling, sampling accuracy and analysis result accuracy.

[0154] The vehicle window test system 30 may include an electronic device 25 , which is electrically connected to a sampling module 27 and is configured to receive sampling information in response to a test trigger instruction and determine a vehicle window test result based on the sampling information;

[0155] In some embodiments, the electronic device 25 displays the sampling information and / or the test results.

[0156] In some embodiments, the flowchart of the vehicle window testing method of the electronic device 25 can be as follows: Figure 5 As shown, the method steps include:

[0157] S101. In response to a test trigger instruction, receive sampling information.

[0158] After each sampler or sensor in the vehicle window test system 30 is installed, the system is powered on, and the staff operates the electronic device 25 to enable the electronic device 25 to generate a test trigger instruction.

[0159] The staff can achieve this through touch screen click operations, and can also trigger the electronic device 25 to generate a test trigger instruction through input of panel buttons, mouse, keyboard, voice, gesture and other operations.

[0160] The sampling device starts sampling and processing signals after being powered on. After the electronic device 25 generates a test trigger instruction, it will respond to the instruction and receive the electrical signal output by the sampling module.

[0161] The sampling information is information determined based on the operating parameters sampled by the sampling module 27 , the position information of the vehicle window glass sampled by the displacement sensing module 22 , and the pressure information of the upper edge of the vehicle window glass sampled by the pressure sensing module 23 .

[0162] The staff can operate the window button to make the window glass rise, fall, or clamp obstacles, thereby triggering the anti-pinch operation of the window controller 11. The electronic device 25 will acquire, store, and analyze the electrical signals generated in the above process. The window controller can be a separate controller or a regional controller for realizing window control, which is not specifically limited here.

[0163] S102: Determine a vehicle window test result based on the sampling information.

[0164] More specifically, the specific steps of the electronic device 25 determining the vehicle window test result include:

[0165] S1021. Determine characteristic information corresponding to the digital signal based on a preset data processing algorithm.

[0166] The preset data processing algorithms include but are not limited to time domain analysis, frequency domain analysis, and fluctuation curve construction algorithms.

[0167] The characteristic information may be characteristic information such as data fluctuation analysis, maximum value, minimum value, mean value, change trend, etc., or it may be characteristic information obtained based on digital signal calculations. This information can simplify the results of subsequent analysis.

[0168] S1022. Determine a vehicle window test result based on the characteristic information and the digital signal, where the vehicle window test result includes a component status indicator and / or a control indicator.

[0169] The window parts include but are not limited to window lifters, rubber strips, and window motors 00;

[0170] The control indicators include, but are not limited to, the operating speed, speed change rate, operating current value, operating torque, driving voltage value, driving voltage polarity, and the moving speed and moving direction of the window motor 00.

[0171] The electronic device 25 can determine the cause of the window failure based on the above indicators.

[0172] Based on the displayed characteristic information and digital signals, the staff can intuitively observe the changes in the window driving process position, extrusion force, and driving parameters to analyze them. During the analysis process, they can refer to the window test results given by the electronic equipment.

[0173] In the above technical scheme, the window test system not only obtains the operating current of the window motor through the sampling module, but also samples the driving voltage of the window motor through the voltage sampling unit, the pressure sensor samples the pressure information of the upper edge of the window, and the displacement sensor samples the displacement information of the window glass, so as to quantify the position change of the window glass and the pressure exerted on the object when it is clamped. The analog-to-digital sampling conversion circuit digitizes the above sampled data so that the electronic device can more accurately determine the abnormal window components and / or control methods in the window during the comparative analysis of multiple sampling information and corresponding feature information at the same time and the trend change analysis of each sampling information within the test period. The display of sampling data and analysis results also enables the staff to observe the changes in the quantitative indicators of the window more intuitively, which helps the staff to make test results in time.

[0174] In some embodiments, the data sampled by the vehicle window testing system for the anti-pinch operation is as follows: Figure 6 As shown. According to the waveform 40 corresponding to the window motor operation data, when the window motor 00 encounters an obstacle, the absolute value of the current value will increase, and the squeezing force 43 on the obstacle will also increase. When the current increases to the threshold, the window control unit 115 will stop supplying power to both ends of the window motor 00, and the waveform 41 of the high-side voltage value at both ends of the window motor 00 will jump from a high level to a low level, and the waveform 42 of the low-side voltage value will remain unchanged.

[0175] When the power supply to the window motor 00 stops, due to the inertia of the window motor 00, there will be a conversion from kinetic energy to potential energy, thus generating a reverse impact current. After the electromotive force generated by its internal resistance is consumed, the current of the window motor 00 drops to 0.

[0176] Due to inertia, the window glass will not stop immediately, so the fluctuation frequency of the waveform 44 of the position data sampled by the glass displacement encoder will decrease but will not stop immediately. The squeezing force 43 of the obstacle is still increasing but the rate of change is decreasing until it stabilizes.

[0177] After controlling the window motor 00 to complete parking, the window control unit 115 controls the window motor 00 to reverse to achieve anti-squeezing operation, then the waveform 42 of the original low-side voltage jumps from a low level to a high level, and the window motor 00 begins to generate an impact current with ripples, indicating that the window motor begins to rotate, but the window has not yet moved. The glass does not start to move until the impact current of the window motor ends. The above process is because the glass and the window motor are connected by a cable, which contains a top pressure spring, and the force on the spring needs to be eliminated before the glass can be driven to rotate.

[0178] In the related art, the ripples of the waveform from the start of the pulse current to the start of the glass movement are also counted into the total number of ripples to calculate the glass displacement, so there is an error. In this application, the staff can analyze and count the waveform of this section, update the calculation and amplification of the window control unit for the window glass displacement, and improve the control accuracy.

[0179] The specific circuit structure of the vehicle window test system and the testing method of the electronic equipment are explained in detail below.

[0180] refer to Figure 7 In the circuit structure shown, the sampling module 27 includes:

[0181] The sampling analog front end 270 is electrically connected to the window motor 00 and the window controller 11 and is configured to obtain the operating parameters of the window motor 00;

[0182] Among them, the operating parameters include operating current and driving voltage;

[0183] The sampling analog front end 270 samples the running current and outputs a first sampling analog voltage signal;

[0184] The sampling analog front end 270 obtains the driving voltage at both ends of the window motor 00 and outputs a second sampling analog voltage signal and a third sampling analog voltage signal;

[0185] The sampling module 27 also includes an analog-to-digital sampling conversion circuit 24, which is electrically connected to the sampling analog front end 270 and is configured to synchronously sample and convert the first sampling analog voltage signal, the second sampling analog voltage signal, and the third sampling analog voltage signal, and output corresponding first voltage digital signals, second voltage digital signals, and third voltage digital signals that change synchronously.

[0186] The first voltage digital signal is a sampled electrical signal corresponding to the operating current;

[0187] The second voltage digital signal and the third voltage digital signal are sampled electrical signals corresponding to the driving voltage;

[0188] The sampling information includes a first voltage digital signal, a second voltage digital signal, and a third voltage digital signal.

[0189] The corresponding parameters of the sampling module can be adjusted by adjusting the sampling rate of the analog-to-digital sampling conversion circuit 24, the resolution of the generated digital signal, and the channel attenuation.

[0190] refer to Figure 8 As shown in the circuit structure, in some embodiments, the sampling analog front end 270 includes a first connector 273 and a second connector 274;

[0191] The window motor 00 includes a motor connector, and the window controller includes a wiring harness connector; when the window system is not connected to the window test system, the motor connector and the wiring harness connector are plugged in, the second pin A of the motor connector and the second pin A' of the wiring harness connector are plugged in, and the first pin B of the motor connector and the first pin B' of the wiring harness connector are plugged in.

[0192] When the vehicle window system is connected to the vehicle window test system 30, the first connector is electrically connected to the motor connector of the vehicle window motor, and the second connector is electrically connected to the wiring harness connector of the vehicle window controller;

[0193] Among them, the first connector and the wiring harness connector are of the same type, and the second connector and the window motor connector are of the same type, and the connection method can also be a plug-in method.

[0194] In the above technical solution, the sampling analog front end of the sampling module is provided with a first connector and a second connector. The first connector is of the same type as the wiring harness connector, and the second connector is of the same type as the motor connector. It can be electrically connected to the window motor and the window controller without breaking the wires, thereby reducing the connection difficulty and improving the detection flexibility.

[0195] refer to Fig. 9 and Fig.10 , the first pin B of the motor connector is electrically connected to the first pin b of the first connector, and the second pin A of the window motor connector is electrically connected to the second pin a of the first connector;

[0196] The first pin B' of the wiring harness connector is electrically connected to the first pin b' of the second connector, and the second pin A' of the wiring harness connector is electrically connected to the second pin a' of the second connector;

[0197] The first pin b of the first connector is electrically connected or coupled to the first pin b' of the second connector;

[0198] The second pin a of the first connector and the second pin a′ of the second connector are electrically connected or coupled.

[0199] In the above technical solution, the two pins of the motor connector and the two pins of the first connector are electrically connected to each other, the two pins of the wiring harness connector and the two pins of the second connector are electrically connected to each other, and the corresponding pins of the two connectors are electrically connected or coupled, so that when the sampling analog front end is connected between the window motor and the window controller, it will not affect the conduction circuit constructed by the window motor and the window controller, and will not affect the driving effect of the window controller on the window motor.

[0200] In some embodiments, the sampling analog front end 270 includes a current sampling resistor R2 .

[0201] The current sampling resistor R2 can be Fig. 9As shown, it is electrically connected between the first pin b of the first connector and the first pin b' of the second connector, and can also be as shown Fig.10 As shown, it is electrically connected between the second pin a of the first connector and the second pin a' of the second connector, which is not specifically limited here.

[0202] The current sampling resistor R2 is configured to obtain the operating current of the window motor 00 and output a fourth sampling analog voltage signal;

[0203] In some embodiments, the sampling analog front end 270 further includes a signal conditioning circuit 275. The signal conditioning circuit 275 is electrically connected to the current sampling resistor R2, and is configured to amplify and enhance the fourth sampling analog voltage signal, and output a first sampling analog voltage signal. The operating current includes the first sampling analog voltage signal, including a ripple digital signal and a drive current mapping digital signal; the drive current mapping digital signal is a sampled voltage digital signal corresponding to the window motor drive current.

[0204] In the above technical solution, the operating current of the window motor is sampled and amplified by a sampling resistor and a signal conditioning circuit, which can improve the quality of the sampling signal and ensure the accuracy of subsequent data analysis.

[0205] In some embodiments, the current sampling resistor R2 can be 1 mΩ or 2 mΩ, which is much smaller than the internal resistance of the window motor 00 , and has no influence on the operation of the window motor 00 .

[0206] In some embodiments, Fig.12 As shown, the signal conditioning circuit includes an operational amplifier circuit U1, a current sampling resistor R2 is electrically connected in series between two input terminals of the operational amplifier circuit U1, and the operational amplifier circuit U1 is configured to amplify the fourth sampled analog voltage signal and output the first sampled analog voltage signal.

[0207] When the input end of the operational amplifier U1 is connected to the high side of the window motor 00, the voltage value is close to the power supply voltage, so the input end of the operational amplifier U1 needs to be able to withstand a voltage greater than the power supply voltage, so that the current data can be measured when the high side and low side of the window motor are switched.

[0208] The maximum voltage drop that can be generated by the window motor operating current on the current sampling resistor R2 needs to be within the linear amplification voltage range of the operational amplifier U1, and its output voltage range can be 0~5V in some embodiments. Its static output voltage is in the middle of its entire measurement dynamic range (2.5V), and its forward current corresponding conversion voltage is in the upper half of the voltage range (2.5V~5V), and the reverse current corresponding conversion voltage is in the lower half of the voltage range (0~2.5V) to support bidirectional current measurement.

[0209] In the above technical solution, the sampling resistor is connected in series between the window motor and the window control unit through the first connector and the second connector, and the first connector and the wiring harness connector are of the same type, and the second connector and the window motor connector are of the same type. The sampling resistor can be connected between the window motor and the controller without breaking the wire, which can reduce the connection difficulty and improve the detection flexibility.

[0210] refer to Fig.11 As shown in the circuit structure, in some embodiments, the sampling analog front end 270 includes a first voltage divider circuit 271 and a second voltage divider circuit 272;

[0211] The first end of the first voltage divider circuit 271 is electrically connected to the second pin a of the first connector and the second pin a' of the second connector, the second end is grounded, and the voltage divider end is electrically connected to the analog-to-digital sampling conversion circuit 24, outputting a second sampled analog voltage signal;

[0212] The first end of the second voltage divider circuit 272 is electrically connected to the first pin b of the first connector, the second end is grounded, the voltage divider end is electrically connected to the analog-to-digital sampling conversion circuit 24, and outputs a third sampled analog voltage signal;

[0213] The first voltage divider circuit 271 includes a resistor R3 and a resistor R4, and the second voltage divider circuit 272 includes a resistor R5 and a resistor R6. In some embodiments, it is necessary to ensure that the resistance ratio of the resistor R3 to the resistor R4 is the same as the resistance ratio of the resistor R5 to the resistor R6.

[0214] In the above technical solution, the voltage sampling unit is also connected to the window motor and the control unit through the first connector and the second connector. Without breaking the wire, it does not affect the window control unit to control the stable operation of the window motor, and can also sample the voltage signal to improve the detection flexibility.

[0215] The electronic device 25 is electrically connected to the analog-to-digital sampling conversion circuit 24 via a communication interface such as USB or Type C.

[0216] In some embodiments, the electronic device 25 can calculate the operating index data of the window motor 00 and the movement change amount of the window transmission structure connected to the window motor 00 based on the first voltage digital signal when the window motor 00 is running;

[0217] The first voltage digital signal includes a ripple digital signal and a drive current mapping digital signal; the drive current mapping digital signal is a sampled voltage digital signal corresponding to the window motor drive current.

[0218] More specifically, the electronic device 25 is configured to calculate index information of the current ripple of the window motor based on the ripple digital signal, the index information including ripple distortion, ripple frequency, and ripple quantity;

[0219] Determining the rotation speed of the window motor 00 based on the ripple frequency;

[0220] Determine the number of rotations and the phase increment of the window motor 00 based on the number of ripples to determine the calculated displacement of the window transmission structure in the window system as the calculated displacement of the window glass; the window transmission structure is connected between the window motor 00 and the window glass;

[0221] Based on the calculated displacement of the window glass and the initial position of the glass, determine the calculated position of the window glass in the full stroke;

[0222] Based on the current mapping digital signal, the torque value, torque change rate and torque direction of the window motor 00 are calculated.

[0223] The number of rotations of the window motor 00 is not always an integer. When the offset angle at the start of rotation is inconsistent with the offset angle at the end of rotation, a phase change will occur. The calculation process is as follows:

[0224] The number of ripples generated when the window motor 00 rotates one circle is the first ripple number. The total number of ripples generated when the window motor 00 rotates is divided by the first ripple number, and the quotient is the number of circles rotated by the window motor 00. The ratio of the remainder to the first ripple number and the product of 2π is the phase increment of the window motor 00.

[0225] When calculating the displacement of the window transmission structure, the window transmission structure can be a cable. Since the window motor 00 is connected to the reel through a reducer, the reel drives the cable to move, and the cable drives the window glass to move. Therefore, when calculating the distance moved by the window glass, the reduction ratio of the reducer needs to be considered. The calculation formula is:

[0226] ;

[0227] Among them, n represents the total number of ripples generated by the rotation of the window motor 00, m represents the number of first ripples generated by one rotation of the window motor 00, D represents the diameter of the roller, and k1 represents the reduction ratio.

[0228] In some embodiments, the electronic device 25 may determine the power supply parameters of the window motor 00 based on the second voltage digital signal and the third voltage digital signal;

[0229] More specifically, the electronic device 25 is configured to determine the voltage value and voltage polarity of the operating voltage of the window motor 00 based on the voltage difference between the second voltage digital signal and the third voltage digital signal.

[0230] In some embodiments, the electronic device 25 can calculate the moving speed and position of the vehicle window glass based on the position digital signal; the position digital signal is a sampled electrical signal corresponding to the position information of the vehicle window glass, which is a digital signal generated by the analog-to-digital sampling conversion circuit based on the position information sampled by the displacement sensing module;

[0231] Based on the pressure digital signal, the extrusion pressure and the extrusion pressure change rate of the upper edge of the vehicle window glass are calculated; the pressure digital signal is a sampled electrical signal corresponding to the pressure information of the upper edge of the vehicle window glass, which is a digital signal generated by the analog-to-digital sampling conversion circuit based on the pressure signal sampled by the pressure sensing module.

[0232] The electronic device 25 determines that the window motor 00 is operating abnormally when the ripple distortion is greater than the distortion threshold;

[0233] When the ripple distortion is less than the distortion threshold, the vehicle window test result is determined based on multiple digital signals and multiple feature information corresponding to each sampling moment, and / or the change rate of the multiple digital signals and feature information at multiple sampling moments.

[0234] In some embodiments, the electronic device 25 determines the time difference between the first change moment of the first voltage digital signal corresponding to the operating current and the moment when the pressure digital signal corresponding to the squeezing force on the upper edge of the window glass is greater than the preset anti-pinch force threshold as the squeezing force detection hysteresis delay;

[0235] Based on the squeeze force detection hysteresis delay, the anti-pinch detection timeliness of the window control unit is evaluated;

[0236] When the extrusion force detection hysteresis delay is less than the preset delay threshold, it is determined that the anti-pinch detection timeliness of the window control unit is in a normal range; when the extrusion force detection hysteresis delay is greater than or equal to the preset delay threshold, it is determined that the anti-pinch detection timeliness of the window control unit is poor, and the control algorithm needs to be optimized and / or the related window components (such as the spring and rubber strip in the cable) need to be replaced or adjusted.

[0237] The first change moment is when the window motor 00 rotates forward and the pressure digital signal corresponding to the pinching force on the upper edge of the window glass determined by the window controller 11 based on the operating current is greater than the preset anti-pinch force threshold;

[0238] When the window motor 00 rotates forward, the window glass moves upward.

[0239] The squeezing pressure on the upper edge of the window glass is calculated based on the motor drive current growth rate, motor drive current value, and ripple period change rate determined in the operating current.

[0240] In the above technical solution, when the electronic device determines that the current waveform generated by the window motor is normal based on the ripple distortion degree, the hysteresis delay of the window control unit performing the anti-squeezing operation is determined based on the difference between the first change moment of the first voltage digital signal corresponding to the running current and the moment when the squeezing force at the upper edge of the window glass is greater than the preset anti-squeezing threshold value. It can determine whether the window controller performs the anti-pinch operation in time, and also determine whether the window glass responds to the coupling of the change in time after the window motor stops, so that the technicians can adjust the control algorithm and window components in time.

[0241] In some embodiments, since the window controller 11 controls the window motor 00 to start braking operation to perform window anti-pinch operation, the window glass will rise due to inertia, causing the anti-pinch force to further increase. In order to prevent the maximum clamping force of the window from not reaching the anti-pinch standard value, the clamping force compensation value generated by this section of the window rise needs to be counted, and the braking point of the window motor is found based on this.

[0242] The electronic device 25 determines the period during which the second voltage digital signal and the third voltage digital signal are both at the preset low level as the anti-pinch execution period during which the window controller controls the window glass to perform the anti-pinch operation. Figure 6 The t1 period shown; wherein the preset low level is the voltage value at both ends of the window motor when it brakes or stops.

[0243] Based on the change of the position digital signal corresponding to the position of the vehicle window glass, the upward stop moment of the vehicle window glass is determined; this moment is when the position of the vehicle window glass is at the maximum value.

[0244] The period between the start time of the anti-pinch execution period and the stop time of the upward movement of the window glass is determined as the inertial rising period of the window glass when the window controller controls the window anti-pinch. Figure 6 The t2 period shown;

[0245] The difference between the position digital signal corresponding to the start time of the anti-pinch execution period and the window glass position corresponding to the upward stop time of the window glass is determined as the inertial rising distance of the window glass when the window controller controls the window anti-pinch;

[0246] Based on the inertia rising period and inertia rising distance of the window glass, the window glass travel operation algorithm of the window controller is adjusted.

[0247] More specifically, when the window controller determines that the window glass is in an inertia rising period based on the change in the driving voltage of the window motor, the inertia rising distance is used to compensate the running upward position of the window glass determined by the window controller;

[0248] The running up position of the window glass is calculated by the window controller based on the number of ripples obtained before the inertia rise period.

[0249] In some embodiments, the window squeezing time is also required. In practical applications, the window squeezing time is determined by the time when the window motor starts to brake and the time between the window motor reversing and the glass moving. Since the window clamping time is a fixed time, it is necessary to adjust the window motor parking time by measuring the delay time of the window clamping force.

[0250] The electronic device 25 also determines the starting time of the downward movement of the vehicle window glass based on the change in the position of the vehicle window glass, that is, the time when the position of the vehicle window glass begins to drop.

[0251] The period between the start time of the downward movement of the window glass and the stop time of the anti-pinch execution period is determined as the window anti-pinch reverse drive hysteresis period. Figure 6 The t3 period shown;

[0252] A window motor control algorithm of a window controller is adjusted based on an anti-pinch execution period and a window anti-pinch back-drive hysteresis period.

[0253] More specifically, the sum of the duration of the anti-pinch execution period and the window anti-pinch back-drive hysteresis period is determined as the window glass clamping time;

[0254] When the clamping time is greater than a preset clamping time threshold, reducing the braking time in the window motor control algorithm;

[0255] The reduction value of the braking time is greater than or equal to the difference between the clamping time and the preset clamping time threshold.

[0256] In the above technical solution, the electronic device determines the braking execution period when the window controller controls the window glass to perform the braking operation through the change of the driving voltage of the window motor, and determines the starting time of the downward movement of the window glass through the window glass position information sampled by the displacement sensor module, so as to determine the delay time between the window controller controlling the reverse of the window motor to the start of the downward movement of the window glass, thereby adjusting the braking time of the window motor to prevent the window from clamping objects for too long and causing damage to the clamped objects.

[0257] refer to Fig.12 As shown in the circuit structure, in some embodiments, the vehicle window testing system 30 further includes a temperature sensing module 26, the temperature sensing module 26 is electrically connected to the electronic device 25, and the temperature sensing module 26 is configured to sample the temperature of the environment in which the vehicle window is located;

[0258] The electronic device 25 is configured to determine the status of the window transmission system and the rubber strip based on the ambient temperature, the operating voltage of the window motor, the torque value of the window motor and the moving speed of the window glass when the window control unit 115 controls the operation of the window motor, and the status includes a normal state or an abnormal state.

[0259] More specifically, the electronic device 25 determines the torque range corresponding to the window motor based on the ambient temperature;

[0260] When the change rate of the window motor's operating voltage is greater than the preset voltage change rate threshold, the change rate of the window glass's moving speed is less than the preset speed change rate threshold, and the window motor's torque value exceeds the torque range, it is determined that the window transmission system is in an abnormal state, and the door may be hit, causing deformation of the window transmission structure.

[0261] When the change rate of the window motor's operating voltage is greater than the preset voltage change rate threshold, the change rate of the window glass's moving speed is less than the preset speed change rate threshold, and the change rate of the window motor's torque value is greater than the preset torque change rate threshold, it is determined that the rubber strip is in an abnormal state, that the resistance of the rubber strip is large, and that a rubber strip with lower hardness needs to be replaced.

[0262] In the above technical solution, the window controller determines that the movement of the window glass is abnormal when the rate of change of the moving speed of the window glass is less than a preset speed change rate threshold. Based on the changes in the working voltage of the window motor and the torque value of the window motor under the current ambient temperature, it can further determine that there are abnormal window transmission systems and rubber strips, and replace or adjust the abnormal parts in time.

[0263] In some feasible embodiments, the electronic device 25 is further configured to store the digital signal and the characteristic information;

[0264] The electronic device 25 is provided with a communication module, and the electronic device 25 is communicatively connected with other devices 28 via the communication module, and is configured to transmit digital signals and characteristic information to other devices 28 via the communication module.

[0265] In the above technical solution, the electronic device can transmit the data and analysis results it obtains to other devices through the communication module, so that the staff can remotely inspect the vehicle. They can also use complex models through other devices to conduct in-depth analysis of the obtained data, realize the transfer of computing power of the electronic device, and reduce the production cost of movable equipment in the window testing system.

[0266] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required by the present application.

[0267] It should be further noted that, although the various steps in the flowchart are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless there is a clear description in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowchart may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these sub-steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0268] It should be understood that the above-mentioned device embodiments are only illustrative, and the device of the present application can also be implemented in other ways. For example, the division of units / modules in the above-mentioned embodiments is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units, modules or components can be combined, or can be integrated into another system, or some features can be ignored or not executed.

[0269] In addition, unless otherwise specified, each functional unit / module in each embodiment of the present application may be integrated into one unit / module, each unit / module may exist physically separately, or two or more units / modules may be integrated together. The above-mentioned integrated unit / module may be implemented in the form of hardware or in the form of a software program module.

[0270] If the integrated unit / module is implemented in the form of hardware, the hardware can be a digital circuit, an analog circuit, etc. The physical implementation of the hardware structure includes but is not limited to transistors, memristors, etc. If not specifically stated, the processor can be any appropriate hardware processor, such as CPU, GPU, FPGA, DSP, and ASIC, etc. If not specifically stated, the storage unit can be any appropriate magnetic storage medium or magneto-optical storage medium, such as resistive random access memory RRAM (Resistive Random Access Memory), dynamic random access memory DRAM (Dynamic Random Access Memory), static random access memory SRAM (Static Random-Access Memory), enhanced dynamic random access memory EDRAM (Enhanced Dynamic Random Access Memory), high-bandwidth memory HBM (High-Bandwidth Memory), hybrid memory cube HMC (Hybrid Memory Cube), etc. In some embodiments, the circuit structure of electronic devices such as the IP configuration device and the dynamic environment device collector that implement the above embodiments can be as follows. Fig.13 As shown, the electronic device 25 includes a memory 251 and a processor 252, and the memory 251 is connected to the processor 252 via a bus. Since the memory 251 in the electronic device 25 has a larger capacity than the storage capacity of the oscilloscope, more data can be sampled and analyzed, preventing important information from being lost due to storage reasons.

[0271] If the integrated unit / module is implemented in the form of a software program module and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a memory, including a number of instructions to enable a computer device (which can be a personal computer, server or network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned memory includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk and other media that can store program codes.

[0272] In the above embodiments, the description of each embodiment has its own emphasis. For the part not described in detail in a certain embodiment, please refer to the relevant description of other embodiments. The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0273] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0274] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A vehicle window testing system, characterized in that: being electrically connected to a vehicle window system, wherein the vehicle window system includes a vehicle window motor and a vehicle window controller; The vehicle window testing system comprises: A sampling module, electrically connected to the window motor, and configured to sample operating parameters of the window motor; A displacement sensing module is configured to sample position information of a vehicle window glass; A pressure sensing module, configured to sample pressure information of the upper edge of the vehicle window glass; an electronic device, electrically connected to the sampling module, and configured to obtain sampling information in response to a test trigger instruction, wherein the sampling information is information determined based on the operating parameter, the position information, and the pressure information; Based on the sampling information, a vehicle window test result is determined.

2. The vehicle window testing system according to claim 1, characterized in that: The operating parameters include operating current and driving voltage; The sampling module comprises: A sampling analog front end is electrically connected to the window motor and the window controller, and is configured to obtain the operating current of the window motor and output a first sampling analog voltage signal; obtain the driving voltage at both ends of the window motor and output a second sampling analog voltage signal and a third sampling analog voltage signal; an analog-to-digital sampling conversion circuit, electrically connected to the sampling analog front end, configured to synchronously sample and convert the first sampling analog voltage signal, the second sampling analog voltage signal, and the third sampling analog voltage signal, and correspondingly output a first voltage digital signal, a second voltage digital signal, and a third voltage digital signal that change synchronously; The sampling information includes the first voltage digital signal, the second voltage digital signal, and the third voltage digital signal.

3. The vehicle window testing system according to claim 2, characterized in that: The sampling analog front end includes a first connector and a second connector; The first connector is electrically connected to the motor connector of the window motor, and the second connector is electrically connected to the wiring harness connector of the window controller; The first connector is of the same type as the wiring harness connector, and the second connector is of the same type as the motor connector.

4. The vehicle window testing system according to claim 3, characterized in that: The first pin of the motor connector is electrically connected to the first pin of the first connector, and the second pin of the motor connector is electrically connected to the second pin of the first connector; The first pin of the wiring harness connector is electrically connected to the first pin of the second connector, and the second pin of the wiring harness connector is electrically connected to the second pin of the second connector; The first pin of the first connector is electrically connected or coupled to the first pin of the second connector; The second pin of the first connector is electrically connected or coupled to the second pin of the second connector.

5. The vehicle window testing system according to claim 4, characterized in that: The sampling analog front end also includes: a current sampling resistor, the current sampling resistor being electrically connected between a first pin of the first connector and a first pin of the second connector, or the current sampling resistor being electrically connected between a second pin of the first connector and a second pin of the second connector, the current sampling resistor being configured to obtain a running current of the window motor and output a fourth sampling analog voltage signal; A signal conditioning circuit, wherein an input port of the signal conditioning circuit is electrically connected to two ends of the current sampling resistor, and is configured to amplify and enhance the fourth sampled analog voltage signal and output the first sampled analog voltage signal.

6. The vehicle window testing system according to claim 4, characterized in that: The sampling analog front end also includes a first voltage divider circuit and a second voltage divider circuit; The first end of the first voltage divider circuit is electrically connected to the second pin of the first connector and the second pin of the second connector, the second end of the first voltage divider circuit is grounded, and the voltage divider end of the first voltage divider circuit is electrically connected to the analog-to-digital sampling conversion circuit to output the second sampling analog voltage signal; The first end of the second voltage divider circuit is electrically connected to the first pin of the first connector, the second end thereof is grounded, and the voltage divider end thereof is electrically connected to the analog-to-digital sampling conversion circuit to output the third sampling analog voltage signal.

7. A vehicle window testing method, characterized in that: The method is applied to an electronic device in a vehicle window testing system, wherein the vehicle window testing system further comprises a sampling module, a displacement sensing module and a pressure sensing module, wherein the sampling module, the displacement sensing module and the pressure sensing module are electrically connected to the electronic device respectively; The method comprises: Obtaining sampling information, where the sampling information is determined based on the operating parameters sampled by the sampling module, the position information of the vehicle window glass sampled by the displacement sensing module, and the pressure information of the upper edge of the vehicle window glass sampled by the pressure sensing module; Based on the sampling information, a vehicle window test result is determined.

8. The method according to claim 7, characterized in that The determining of the vehicle window test result based on the sampling information includes: Determine feature information corresponding to the sampling information based on a preset data processing algorithm; Based on the characteristic information and the sampling information, a vehicle window test result is determined, wherein the vehicle window test result includes a state index and / or a control index of a vehicle window component.

9. The method according to claim 8, characterized in that The operating parameters include operating current and driving voltage; The sampling information includes a first voltage digital signal, a second voltage digital signal, a third voltage digital signal, a position digital signal and a pressure digital signal; The first voltage digital signal is a sampled electrical signal corresponding to the operating current; The second voltage digital signal and the third voltage digital signal are sampled electrical signals corresponding to the driving voltage; The position digital signal is a sampled electrical signal corresponding to the position information of the vehicle window glass; The pressure digital signal is a sampled electrical signal corresponding to the pressure information on the upper edge of the vehicle window glass; The determining, based on a preset data processing algorithm, characteristic information corresponding to the sampling information specifically includes: When the window motor is running, based on the first voltage digital signal, calculating the operating index data of the window motor and the movement change amount of the window transmission structure connected to the window motor; determining a power supply parameter of the window motor based on the second voltage digital signal and the third voltage digital signal; Calculating the moving speed and position of the vehicle window glass based on the position digital signal; Based on the pressure digital signal, the squeezing pressure and the squeezing pressure change rate of the upper edge of the vehicle window glass are calculated.

10. The method according to claim 9, characterized in that The first voltage digital signal includes a ripple digital signal and a drive current mapping digital signal; the drive current mapping digital signal is a sampled voltage digital signal corresponding to the drive current of the window motor; The step of calculating the operating index data of the window motor and the movement variation of the window transmission structure connected to the window motor based on the first voltage digital signal includes: Based on the ripple digital signal, calculating index information of the current ripple of the window motor, the index information including ripple distortion, ripple frequency, and ripple quantity; determining a rotational speed of the window motor based on the ripple frequency; Determine the number of rotations and the phase increment of the window motor based on the ripple quantity to determine the calculated displacement of the window transmission structure in the window system as the calculated displacement of the window glass; the window transmission structure is connected between the window motor and the window glass; Determining the calculated position of the vehicle window glass in the full stroke based on the calculated displacement of the vehicle window glass and the glass starting position; Calculating a torque value, a torque change rate, and a torque direction of the window motor based on the current mapping digital signal; The determining the power supply parameter of the window motor based on the second voltage digital signal and the third voltage digital signal includes: Based on the voltage difference between the second voltage digital signal and the third voltage digital signal, a voltage value and a voltage polarity of the window motor operating voltage are determined.

11. The method according to claim 10, characterized in that The determining of the vehicle window test result based on the feature information and the sampling information specifically includes: When the ripple distortion degree is greater than a distortion threshold, determining that the window motor is operating abnormally; When the ripple distortion degree is less than the distortion threshold, the vehicle window test result is determined based on multiple digital signals and multiple feature information corresponding to each sampling moment, and / or the change rate of the multiple digital signals and the feature information at multiple sampling moments.

12. The method according to claim 11, characterized in that The determining of the vehicle window test result based on the multiple digital signals and the multiple feature information corresponding to each sampling moment, and / or the change rate of the multiple digital signals and the feature information at multiple sampling moments, comprises: Determine the time difference between the first change moment of the first voltage digital signal and the moment when the pressure digital signal is greater than a preset anti-pinch force threshold as the squeezing force detection hysteresis delay; Based on the squeeze force detection hysteresis delay, evaluating the anti-pinch detection timeliness of the window control unit; The first change moment is when the window motor rotates forward and the pressure digital signal determined by the window controller based on the first voltage digital signal is greater than a preset anti-pinch force threshold; the window glass moves upward when the window motor rotates forward.

13. The method according to claim 11, characterized in that The determining of the vehicle window test result based on the multiple digital signals and the multiple feature information corresponding to each sampling moment, and / or the change rate of the multiple digital signals and the feature information at multiple sampling moments, comprises: determining a period during which the second voltage digital signal and the third voltage digital signal are both at a preset low level as an anti-pinch execution period during which the vehicle window controller controls the vehicle window glass to perform an anti-pinch operation; Determining the upward stopping time of the vehicle window glass based on the change of the position digital signal; Determine the period between the start time of the anti-pinch execution period and the upward stop time of the vehicle window glass as the inertial rising period of the vehicle window glass when the vehicle window controller controls the vehicle window anti-pinch; Determine the difference between the window glass position corresponding to the start time of the anti-pinch execution period and the window glass position corresponding to the upward stop time of the window glass as the inertial rising distance of the window glass when the window controller controls the window anti-pinch; Based on the inertia rising period and the inertia rising distance of the vehicle window glass, a vehicle window glass travel operation algorithm of the vehicle window controller is adjusted.

14. The method according to claim 13, characterized in that The step of adjusting the window glass travel operation algorithm of the window controller based on the inertia rising period and the inertia rising distance of the window glass comprises: When the window controller determines that the window glass is in an inertia rising period based on the change in the driving voltage of the window motor, the inertia rising distance is used to compensate the determined upward position of the window glass; The running up position of the window glass is calculated by the window controller based on the number of ripples obtained before the inertia rising period.

15. The method according to claim 13, characterized in that After determining the anti-pinch execution period, the method further includes: Determining the starting time of the downward movement of the vehicle window glass based on the change of the position digital signal; Determine the period between the starting moment of the downward movement of the vehicle window glass and the stopping moment of the anti-pinch execution period as the vehicle window anti-pinch reverse drive hysteresis period; Based on the anti-pinch execution period and the window anti-pinch back-drive hysteresis period, a window motor control algorithm of the window controller is adjusted.

16. The method according to claim 15, characterized in that Based on the anti-pinch execution period and the window anti-pinch back-drive hysteresis period, adjusting the window motor control algorithm of the window controller includes: Determining the sum of the duration of the anti-pinch execution period and the vehicle window anti-pinch back-drive hysteresis period as the clamping time of the vehicle window glass; When the clamping time is greater than a preset clamping time threshold, reducing the braking time in the window motor control algorithm; The reduction value of the braking time is greater than or equal to the difference between the clamping time and the preset clamping time threshold.

17. The method according to claim 11, characterized in that The vehicle window testing system further comprises a temperature sensing module, wherein the temperature sensing module is electrically connected to the electronic device; The determining of the vehicle window test result based on the multiple digital signals and the multiple feature information corresponding to each sampling moment, and / or the change rate of the multiple digital signals and the feature information at multiple sampling moments, comprises: When the window control unit controls the window motor to operate, based on the ambient temperature sampled by the temperature sensing module, the operating voltage of the window motor, the torque value of the window motor and the moving speed of the window glass, the state of the window transmission system and the rubber strip is determined, and the state includes a normal state or an abnormal state; The vehicle window system comprises the vehicle window transmission system, and the vehicle window transmission system is connected between the vehicle window motor and the vehicle window glass.

18. The method according to claim 17, characterized in that The method of determining the state of the window transmission system based on the ambient temperature sampled by the temperature sensing module, the operating voltage of the window motor, the torque value of the window motor and the moving speed of the window glass when the window control unit controls the window motor to operate includes: determining a torque range corresponding to the window motor based on the ambient temperature; When the rate of change of the working voltage of the window motor is greater than a preset voltage change rate threshold, the rate of change of the moving speed of the window glass is less than a preset speed change rate threshold, and the torque value of the window motor exceeds the torque range, it is determined that the window transmission system is in an abnormal state; When the change rate of the working voltage of the window motor is greater than a preset voltage change rate threshold, the change rate of the moving speed of the window glass is less than a preset speed change rate threshold, and the change rate of the torque value of the window motor is greater than a preset torque change rate threshold, it is determined that the rubber strip is in an abnormal state.

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