Control Method, Device, Equipment and Readable Storage Medium of Power Take-off

Abstract

The present application discloses a control method, device, equipment and readable storage medium for a power take-off. The method includes the steps of: when the power domain controller receives a power take-off instruction input by the driver, determining whether the current state meets the power take-off condition; if the power take-off condition is met, sending a first status message to the transmission controller and sending a second status message to the motor controller; the transmission controller is used to control the power take-off solenoid valve to engage; the motor controller is used to adjust the motor controller to enter the speed control mode; receiving the speed regulation instruction input by the driver through the speed regulation switch, and controlling the motor to adjust the speed of the power take-off based on the speed regulation instruction. The present application simplifies the power take-off control mode and improves the economy of the power take-off speed control by detecting the power take-off switch signal and judging the power take-off condition through the power domain controller, without the need for instruction interaction between the TCU and the VCU.

Description

Technical Field

[0001] This application relates to the field of automobiles, and particularly to a control method, device, equipment and readable storage medium for a power take-off. Background Art

[0002] With the improvement of people's environmental protection awareness, new energy vehicles are gradually replacing fuel vehicles, such as new energy buses, new energy sprinkler trucks, and new energy loading and unloading vehicles.

[0003] Among them, sprinkler trucks, loading and unloading vehicles, etc. need to take additional power through a power take-off. Currently, the TCU detects the power take-off switch signal, and the VCU judges the power take-off condition according to the signal sent by the TCU. If the power take-off condition is met, a meshing instruction is sent to the TCU to control the solenoid valve to suck in. After multiple interactions, the power take-off control strategy becomes cumbersome, thereby reducing the economy of the power take-off speed control. Summary of the Invention

[0004] In view of this, this application provides a control method, device, equipment and readable storage medium for a power take-off, aiming to improve the economy of the power take-off speed control.

[0005] To achieve the above object, this application provides a control method for a power take-off, and the method includes:

[0006] When the power domain controller receives a power take-off instruction input by the driver, judge whether the current state meets the power take-off condition;

[0007] If the power take-off condition is met, send a first status message to the transmission controller and send a second status message to the motor controller; the transmission controller is used to control the solenoid valve of the power take-off to suck in; the motor controller is used to adjust the motor controller to enter the speed control mode;

[0008] Receive the speed regulation instruction input by the driver through the speed regulation switch, and control the motor to adjust the speed of the power take-off based on the speed regulation instruction.

[0009] Exemplarily, the speed regulation instruction is an acceleration instruction or a deceleration instruction. The receiving the speed regulation instruction input by the driver through the speed regulation switch, and controlling the motor to adjust the speed of the power take-off based on the speed regulation instruction; the speed regulation instruction is used to increase or decrease the speed of a preset value, including:

[0010] If the speed regulation instruction is an acceleration instruction, increase the speed of the power take-off from the initial speed to the first speed;

[0011] If the speed regulation instruction is a deceleration instruction, decrease the speed of the power take-off from the initial speed to the second speed.

[0012] Exemplarily, when the power domain controller receives a power take-off instruction input by the driver, determining whether the current state meets the power take-off condition includes:

[0013] When receiving the power take-off instruction input by the driver, obtaining the vehicle operating condition information; the operating condition information includes the driving speed of the vehicle and the high-voltage state information of the vehicle;

[0014] If the driving speed of the vehicle is less than or equal to the preset driving speed and the high-voltage state information is in the ready state, it is determined that the operating condition information meets the power take-off condition.

[0015] Exemplarily, after sending the first status message to the transmission controller if the power take-off condition is met, it includes:

[0016] When the transmission controller receives the first status message, generating a high-level signal;

[0017] Based on the high-level signal, controlling the solenoid valve of the power take-off to close.

[0018] Exemplarily, after the power take-off instruction includes a first power take-off instruction and when the power domain controller receives the power take-off instruction input by the driver and determines whether the current state meets the power take-off condition, it includes:

[0019] Determining the driver's power take-off strategy based on the power take-off instruction;

[0020] If the power take-off instruction is the first power take-off instruction, it is determined that the driver's power take-off strategy is to control the variable constant speed movement of the power take-off through the cruise control combination switch.

[0021] Exemplarily, after receiving the speed regulation instruction input by the driver through the speed regulation switch and controlling the motor to adjust the speed of the power take-off based on the speed regulation instruction, it includes:

[0022] Displaying the speed of the power take-off on the vehicle's interaction interface;

[0023] If the speed is equal to the first preset speed, outputting a first prompt message; the first prompt message is used to prompt the driver that the current speed has reached the maximum speed of the power take-off;

[0024] If the speed is equal to the second preset speed, outputting a second prompt message; the second prompt message is used to prompt the driver that the current speed has reached the minimum speed of the power take-off.

[0025] Exemplarily, after determining that the driver's power take-off strategy is to control the variable constant speed movement of the power take-off through the cruise control combination switch if the power take-off instruction is the first power take-off instruction, it further includes:

[0026] Identifying the driver's voice feature information;

[0027] Based on the voice feature information, the rotational speed of the power take-off is adjusted.

[0028] Exemplarily, to achieve the above-mentioned purpose, the present application further provides a control device for a power take-off, the control device for a power take-off comprising:

[0029] A judgment module, configured to judge whether the current state satisfies the power take-off condition when the power domain controller receives the power take-off command input by the driver;

[0030] a sending module, configured to send a first status message to a transmission controller and a second status message to a motor controller if a power take-off condition is met; the transmission controller is configured to control the power take-off solenoid valve to engage; and the motor controller is configured to adjust the motor controller to enter a speed control mode;

[0031] The receiving module is used to receive the speed control instruction input by the driver through the speed control switch, and control the motor to adjust the speed of the power take-off based on the speed control instruction.

[0032] Exemplarily, to achieve the above-mentioned purpose, the present application also provides a control device for a power take-off, which includes a memory, a processor, and a control program for the power take-off stored on the memory and executable on the processor. When the control program for the power take-off is executed by the processor, the steps of the control method for the power take-off as described above are implemented.

[0033] Exemplarily, to achieve the above-mentioned purpose, the present application also provides a computer-readable storage medium, on which a control program for a power take-off is stored. When the control program for the power take-off is executed by a processor, the steps of the power take-off control method as described above are implemented.

[0034] In the prior art, the PTO switch signal is detected by the TCU, and the VCU judges the PTO condition according to the signal sent by the TCU. If the PTO condition is satisfied, a meshing instruction is sent to the TCU to control the solenoid valve to suck in. After multiple interactions, the PTO control strategy is cumbersome, and thus the economy of the PTO speed control is reduced. In contrast, in the present application, when the power domain controller receives the PTO instruction input by the driver, it judges whether the current state meets the PTO condition; if the PTO condition is satisfied, a first status message is sent to the transmission controller, and a second status message is sent to the motor controller; the transmission controller is used to control the PTO solenoid valve to suck in; the motor controller is used to adjust the motor controller to enter the speed control mode; receive the speed regulation instruction input by the driver through the speed regulation switch, and control the motor to adjust the speed of the PTO based on the speed regulation instruction. By detecting the PTO switch signal and judging the PTO condition by the power domain controller, the present application does not require instruction interaction between the TCU and the VCU, simplifies the PTO control mode, and improves the economy of the PTO speed control. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0037] Figure 1 It is a schematic flowchart of the first embodiment of the control method of the PTO of the present application;

[0038] Figure 2 It is a schematic diagram of the cruise control combined switch of the first embodiment of the control method of the PTO of the present application;

[0039] Figure 3 It is a schematic structural diagram of the hardware operating environment involved in the embodiment solution of the present application.

[0040] The implementation, functional features and advantages of the object of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0041] It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0042] The present application provides a control method for a PTO, referring to Figure 1 , Figure 1Schematic flowchart of the first embodiment of the control method for the power take-off of the present application.

[0043] The embodiments of the present application provide an embodiment of the control method for the power take-off. It should be noted that although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order from here. For the convenience of description, the execution subject is omitted below to describe each step of the control method for the power take-off. The control method for the power take-off includes:

[0044] Step S10, when the power domain controller receives the power take-off instruction input by the driver, determine whether the current state meets the power take-off condition.

[0045] Step S20, if the power take-off condition is met, send the first status message to the transmission controller and send the second status message to the motor controller; the transmission controller is used to control the power take-off solenoid valve to suck in; the motor controller is used to adjust the motor controller to enter the speed control mode.

[0046] Step S30, receive the speed regulation instruction input by the driver through the speed regulation switch, and control the motor to adjust the speed of the power take-off based on the speed regulation instruction.

[0047] The specific steps are as follows:

[0048] Step S10, when the power domain controller receives the power take-off instruction input by the driver, determine whether the current state meets the power take-off condition.

[0049] In this embodiment, the power take-off instruction is that when it is detected that the brake pedal of the vehicle is in the depressed state, the key is in the ST gear and in the released state, the vehicle high voltage reaches the Ready state, the shift lever is placed in the N gear, the handbrake is in the pulled-up state, and a high-level signal of the power take-off solenoid valve rocker is received, it is considered that the driver has a power take-off requirement, and it is judged whether the current state meets the power take-off condition through the PMS (power production management, power domain controller). Among them, when the driver presses the power take-off solenoid valve rocker switch on the cab instrument panel, the power take-off solenoid valve rocker generates a high-level signal.

[0050] In the present application, when receiving the power take-off instruction through the PMS, only signal transmission through hard wires is required, and signal transmission through the CAN bus is not required, improving the economy of power take-off.

[0051] Exemplarily, the determining whether the current state meets the power take-off condition when the power domain controller receives the power take-off instruction input by the driver includes:

[0052] Step a1, when receiving a power take-off instruction input by the driver, obtain the vehicle operating conditions information; the vehicle operating conditions information includes the vehicle's driving speed and the vehicle's high-voltage status information.

[0053] Step a2, if the vehicle's driving speed is less than or equal to a preset driving speed and the high-voltage status information is in a ready state, determine that the vehicle operating conditions information meets the power take-off condition.

[0054] In this embodiment, obtain the vehicle operating conditions information, determine whether the vehicle operating conditions information meets the power take-off condition. If it meets the power take-off condition, enter the power take-off mode; if it does not meet the power take-off condition, generate a failure message on the vehicle interaction interface to prompt the driver that the power take-off fails. Among them, the vehicle operating conditions information includes: the vehicle's high-voltage status information, the vehicle's gear position information, the handbrake information, the vehicle's driving speed, the power take-off button status information, the cruise switch status information, the message information, and the remote throttle power take-off switch hard-wired signal information.

[0055] Specifically, the power take-off conditions of the power take-off device include: the vehicle's high voltage is in the Ready state, that is, PMS PT ReadyInd = 0x1: Ready; the vehicle's gear position is in the N gear, that is, PMS Gear Position Ind = 0x7D: neutral gear; the vehicle's handbrake signal is valid, that is, PMS_HandbrakeSts = 0x1: handbrake pulled up; the vehicle's driving speed is less than or equal to the preset driving speed; the power take-off button is valid, that is, (Pin77, digital high-side effective input, set-type switch); the TCU (Telematics Control Unit, transmission controller) feedback working status TCU WorkSts = 0x2: that is, the vehicle's power take-off state is park power take-off; the remote throttle power take-off switch hard-wired signal is invalid (Pin73, digital high-side effective input, set-type switch); the cruise switch is invalid; the BBM (BaseBand Modem, baseband modem) message is invalid or the BBM request flag bit is invalid. When the vehicle operating conditions information is in the above state, it is determined that the vehicle operating conditions information meets the power take-off condition.

[0056] Exemplarily, the vehicle's preset driving speed is set as needed, and this embodiment does not make specific limitations. For example, the vehicle's preset driving speed can be 2Km / h, 3Km / h, 4Km / h; if the vehicle is in a reverse state, the vehicle's preset driving speed can be -2Km / h, -3Km / h, -4Km / h.

[0057] Exemplarily, the power take-off instruction includes a first power take-off instruction. After the power domain controller receives the power take-off instruction input by the driver and judges whether the current state meets the power take-off condition, it includes:

[0058] Step b1, determine the power take-off strategy of the driver based on the power take-off instruction;

[0059] Step b2, if the power take-off instruction is the first power take-off instruction, determine that the driver's power take-off strategy is to control the variable constant speed movement of the power take-off through the cruise control combination switch.

[0060] In this embodiment, the power take-off instructions include a first power take-off instruction and a second power take-off instruction, and the power take-off strategies include two strategies: controlling the movement of the power take-off through the accelerator pedal and controlling the variable constant speed movement of the power take-off through the cruise control combination switch. If the power take-off instruction input by the driver is the first power take-off instruction, the variable constant speed movement of the power take-off is controlled through the cruise control combination switch; if the power take-off instruction input by the driver is the second power take-off instruction, the variable constant speed movement of the power take-off is controlled through the accelerator pedal brake switch.

[0061] Step S20, if the power take-off condition is met, send a first status message to the transmission controller and send a second status message to the motor controller; the transmission controller is used to control the solenoid valve of the power take-off to engage; the motor controller is used to adjust the motor controller to enter the speed control mode.

[0062] In this embodiment, the first status message is (PMS_DrivingTakeForceSts:1), and the second status message is (PMS_DrivingTakeForceSts:1). Among them, the transmission controller controls the solenoid valve of the power take-off to engage based on the first status message, and the motor controller adjusts the motor controller to enter the speed control mode based on the second status message. Among them, the power domain controller sends the status message (PMS EM Ctrl Mode:1) to the MCU (Maintenance Communications Unit, motor controller) through the CAN (Controller Area Network) line and sends the requested speed PMS Req Spd Or Lmt with the Set PTO Speed value and holds it.

[0063] Exemplarily, after the step of if the power take-off condition is met, send a first status message to the transmission controller, it includes:

[0064] Step c1, when the transmission controller receives the first status message, generate a high-level signal.

[0065] In this embodiment, if the current vehicle condition meets the power take-off condition, PMS sends a first status message to the transmission controller through the CAN line. When the transmission controller receives the first status message, it generates a high-level signal, and this high-level signal is used to control the solenoid valve of the power take-off to engage.

[0066] Step c1, based on the high-level signal, control the solenoid valve of the power take-off to suck in.

[0067] In this embodiment, after the solenoid valve of the power take-off sucks in, the air circuit of the vehicle is connected, and the gear shaft of the power take-off is engaged with the main shaft of the gearbox. At the same time, the signal of the power take-off indicator switch on the power take-off is connected, and a low-level signal is generated. When the instrument receives the low-level signal, the power take-off indicator light is lit to prompt the driver that the power take-off preparation work of the vehicle has been completed and the speed of the power take-off can be adjusted.

[0068] Step S30, receive the speed regulation instruction input by the driver through the speed regulation switch, and control the motor to adjust the speed of the power take-off based on the speed regulation instruction.

[0069] In this embodiment, the speed regulation switch includes an accelerator pedal brake switch and a cruise control combination switch. Among them, if the driver inputs a first power take-off instruction, the speed regulation instruction input through the cruise control combination switch controls the motor to adjust the speed of the power take-off; if the driver inputs a second power take-off instruction, the speed regulation instruction input through the accelerator pedal brake switch controls the motor to adjust the speed of the power take-off. Among them, the motor controller receives the speed regulation instruction input by the cruise control combination switch or the accelerator pedal brake switch, and controls the motor to adjust the speed of the power take-off.

[0070] (1) The speed regulation instruction input through the cruise control combination switch

[0071] In this embodiment, as Figure 2 shown, the driver controls the cruise control main switch to make the power take-off mode of the vehicle enter the waiting activation state. The driver turns the self-resetting switch S- to activate the power take-off function, and the instrument lights up the cruise control indicator light, indicating that the power take-off enters the power take-off mode of the cruise control combination switch. Cruise control means that the vehicle can maintain driving at the set speed. After enabling cruise control, there is no need to step on the accelerator and brake, and it can automatically accelerate and decelerate according to the road conditions and vehicle speed to reach the set speed for driving. The speed regulation instruction is used to adjust the speed of the power take-off. The power domain controller continuously detects whether the "R + " and "S - " signals of the cruise control combination switch are valid. If the R+ signal is valid, the speed is increased by a preset value based on the current speed until the maximum speed of the power take-off is reached; if the S- signal is valid, the speed is decreased by a preset value based on the current speed until the minimum speed of the power take-off is reached.

[0072] Exemplarily, the preset value of the speed is set as needed, and this embodiment does not make specific limitations. For example, the preset value of the speed can be 50 RPM, 60 RPM, 70 RPM, etc.

[0073] Exemplarily, the maximum speed of the power take-off is set as required, and no specific limitation is made in this embodiment. For example, the maximum speed can be 1500 RPM, 1600 RPM, 1700 RPM, etc.

[0074] Exemplarily, the minimum speed of the power take-off is set as required, and no specific limitation is made in this embodiment. For example, the minimum speed can be 500 RPM, 600 RPM, 700 RPM, etc.

[0075] Exemplarily, the speed regulation instruction is an acceleration instruction or a deceleration instruction. The speed regulation instruction input by the driver through the speed regulation switch is received, and the motor is controlled based on the speed regulation instruction to adjust the speed of the power take-off; the speed regulation instruction is used to increase or decrease the speed by a preset value, including:

[0076] In this embodiment, the driver can use the cruise control handle to input the speed regulation instruction, turn the handle to the SET position, and adjust the speed of the power take-off by detecting the "R" + " and "S" - " signals of the cruise control combination switch, accurately adjusting the speed of the power take-off, and improving the accuracy of the speed control of the power take-off. For example, when the output shaft of the power take-off is adjusted to 800 RPM, the "R" + " button can be used for acceleration. Each time the "R" + " button is pressed, the speed of the power take-off can be increased by 50 RPM until it reaches 1800 RPM; the "S" - " key can also be used for deceleration. Each time the "S" - " button is pressed, the speed of the power take-off can be decelerated by 50 RPM until it reaches 800 RPM.

[0077] (2) The speed regulation instruction input through the accelerator pedal brake switch

[0078] In this embodiment, a one-dimensional calibration is performed between the depth of the vehicle's accelerator pedal and the speed of the power take-off, that is, the speed of the power take-off is positively correlated with the depth of the accelerator pedal. The deeper the depth of the accelerator pedal, the greater the speed of the power take-off; the shallower the depth of the accelerator pedal, the smaller the speed of the power take-off. When it is detected that the driver steps on the accelerator pedal, PMS sends a speed request to the MCU, that is, PMS Req Spd Or Lmt, and transmits power to the output shaft of the power take-off through the drive shaft.

[0079] Step d1, if the speed regulation instruction is an acceleration instruction, increase the speed of the power take-off from the initial speed to the first speed;

[0080] Step d2, if the speed regulation instruction is a deceleration instruction, reduce the speed of the power take-off from the initial speed to the second speed.

[0081] In this embodiment, if the speed regulation command input by the user is an acceleration command, that is, the accelerator pedal is depressed, the speed of the power take-off is increased from the initial speed to the first speed; if the speed regulation command input by the user is a deceleration command, that is, the accelerator pedal is released, the speed of the power take-off is decreased from the initial speed to the second speed.

[0082] Exemplarily, after receiving the speed regulation command input by the driver through the speed regulation switch and controlling the motor to adjust the speed of the power take-off based on the speed regulation command, it includes:

[0083] Step e1, display the speed of the power take-off on the interaction interface of the vehicle.

[0084] In this embodiment, when the speed of the power take-off is too high, it will cause certain damage to the power take-off system. To protect the power take-off system of the vehicle, the current speed of the power take-off is displayed on the interaction interface of the vehicle.

[0085] Step e2, if the speed is equal to the first preset speed, output a first prompt message; the first prompt message is used to prompt the driver that the current speed has reached the maximum speed of the power take-off.

[0086] In this embodiment, the first preset speed is the highest speed of the power take-off, which is set as needed and is not specifically limited in this embodiment. The first prompt message is used to prompt the driver that the current speed has reached the maximum speed of the power take-off.

[0087] Exemplarily, if the speed is greater than or equal to the third preset speed, output a third prompt message, which is used to prompt the driver that the current speed is relatively high. Among them, the third preset speed is the highest speed in the target speed range of the power take-off, and the target speed is the speed at which the power can be quickly taken while not damaging the power take-off system.

[0088] Exemplarily, the third preset speed is set as needed and is not specifically limited in this embodiment.

[0089] Step e3, if the speed is equal to the second preset speed, output a second prompt message; the second prompt message is used to prompt the driver that the current speed has reached the minimum speed of the power take-off.

[0090] In this embodiment, the second preset speed is the lowest speed of the power take-off, which is set as needed and is not specifically limited in this embodiment. The second prompt message is used to prompt the driver that the current speed has reached the minimum speed of the power take-off.

[0091] Exemplarily, if the speed is less than or equal to the fourth preset speed, output a fourth prompt message, which is used to prompt the driver that the current speed is relatively low. Among them, the third preset speed is the minimum speed in the optimal speed range of the power take-off.

[0092] Exemplarily, the fourth preset speed is set as required, and no specific limitation is made in this embodiment.

[0093] In this embodiment, the visual control of the speed is realized through the speed interaction interface of the power take-off, and the driver is guided by prompt information to adjust the speed of the power take-off, improving the power take-off effect and the safety of the power take-off system.

[0094] In this embodiment, it includes four major parts: a request module, a control module, an execution module, and a display module.

[0095] The request part structure is mainly composed of an ignition switch, a brake pedal, a power take-off solenoid valve control rocker switch, an accelerator pedal, and a cruise control combination switch. The ignition switch and the brake pedal control the high voltage on the vehicle. The power take-off solenoid valve rocker switch feeds back the driver's power take-off intention. The opening of the accelerator pedal feeds back the magnitude of the driver's power take-off speed requirement. The cruise control combination switch feeds back the precise required speed of the driver's power take-off speed.

[0096] The control part is composed of a power domain controller, a motor control, and a transmission controller. Among them, the power domain controller receives the request signal and judges whether the vehicle satisfies the power take-off condition; the motor controller controls the motor speed; the transmission controller controls the opening and closing state of the power take-off solenoid valve.

[0097] The execution part is composed of a drive motor and a transmission. The drive motor rotates according to the instruction of the motor controller. The power take-off gear of the transmission meshes with the output shaft of the motor, and transmits the motor power to the output shaft of the power take-off.

[0098] The display part is composed of an instrument, which reflects whether the vehicle enters the power take-off mode and displays the motor speed. The speed of the output shaft of the power take-off can be calculated through the speed ratio relationship.

[0099] Compared with the prior art in which the TCU detects the power take-off switch signal, the VCU judges the power take-off condition according to the signal sent by the TCU. If the power take-off condition is satisfied, a meshing instruction is sent to the TCU to control the solenoid valve to suck in. After multiple interactions, the power take-off control strategy is cumbersome, and thus the economy of the power take-off speed control is reduced. In this application, when the power domain controller receives the power take-off instruction input by the driver, it judges whether the current state satisfies the power take-off condition; if the power take-off condition is satisfied, a first status message is sent to the transmission controller, and a second status message is sent to the motor controller; the transmission controller is used to control the power take-off solenoid valve to suck in; the motor controller is used to adjust the motor controller to enter the speed control mode; receive the speed regulation instruction input by the driver through the speed regulation switch, and control the motor to adjust the speed of the power take-off based on the speed regulation instruction. This application simplifies the power take-off control mode and improves the economy of the power take-off speed control by detecting the power take-off switch signal and judging the power take-off condition through the power domain controller, without the need for instruction interaction between the TCU and the VCU.

[0100] Exemplarily, based on the first embodiment of the control method of the power take-off of the present application above, a second embodiment is proposed. The method further includes:

[0101] Step f1, identifying the voice feature information of the driver.

[0102] In this embodiment, after the driver activates the power take-off mode of the vehicle, the speed of the power take-off can be manually adjusted by pressing the "R + " and "S - " buttons on the cruise control combination switch. Alternatively, after the driver clicks the voice recognition speed button on the cruise control combination switch, the speed adjustment strategy of the power take-off can be determined by identifying the voice feature information of the driver.

[0103] Exemplarily, the voice feature information can be "increase the speed by 50 RPM" or "decrease the speed by 50 RPM".

[0104] Step f2, adjusting the speed of the power take-off based on the voice feature information.

[0105] In this embodiment, the speed of the power take-off is adjusted according to the identified voice feature information.

[0106] In this embodiment, there is no need for the user to manually adjust the speed of the power take-off. Instead, the speed of the power take-off is adjusted by voice, avoiding distraction of the user during driving and improving the safety of vehicle driving.

[0107] Exemplarily, the present application also provides a control device for a power take-off. The control device for the power take-off includes:

[0108] A judgment module, configured to judge whether the current state meets the power take-off condition when the power domain controller receives a power take-off instruction input by the driver;

[0109] A sending module, configured to send a first status message to the transmission controller and send a second status message to the motor controller if the power take-off condition is met; the transmission controller is used to control the suction of the power take-off solenoid valve; the motor controller is used to adjust the motor controller to enter the speed control mode;

[0110] A receiving module, configured to receive a speed adjustment instruction input by the driver through a speed control switch, and control the motor to adjust the speed of the power take-off based on the speed adjustment instruction.

[0111] Exemplarily, the receiving module includes:

[0112] An increase sub-module, configured to increase the speed of the power take-off from an initial speed to a first speed if the speed adjustment instruction is a speed increase instruction;

[0113] A reduction sub-module, configured to reduce the rotational speed of the power take-off from an initial rotational speed to a second rotational speed if the speed regulation instruction is a deceleration instruction.

[0114] Exemplarily, the determination module includes:

[0115] An acquisition sub-module, configured to acquire the vehicle working condition information when receiving a power take-off instruction input by a driver; the vehicle working condition information includes the driving speed of the vehicle and the high-voltage state information of the vehicle;

[0116] A determination sub-module, configured to determine that the vehicle working condition information meets the power take-off condition if the driving speed of the vehicle is less than or equal to a preset driving speed and the high-voltage state information is in a completed preparation state.

[0117] Exemplarily, the control device of the power take-off further includes:

[0118] A generation module, configured to generate a high-level signal when the transmission controller receives the first status message;

[0119] A control module, configured to control the solenoid valve of the power take-off to be attracted based on the high-level signal.

[0120] Exemplarily, the control device of the power take-off further includes:

[0121] A first determination module, configured to determine the power take-off strategy of the driver based on the power take-off instruction;

[0122] A second determination module, configured to determine that the power take-off strategy of the driver is to control the power take-off to perform variable constant-speed movement through a cruise control combined switch if the power take-off instruction is the first power take-off instruction.

[0123] Exemplarily, the control device of the power take-off further includes:

[0124] A display module, configured to display the rotational speed of the power take-off on the vehicle interaction interface;

[0125] A first output module, configured to output a first prompt message if the rotational speed is equal to a first preset rotational speed; the first prompt message is used to prompt the driver that the current rotational speed reaches the maximum rotational speed of the power take-off;

[0126] A second output module, configured to output a second prompt message if the rotational speed is equal to a second preset rotational speed; the second prompt message is used to prompt the driver that the current rotational speed reaches the minimum rotational speed of the power take-off.

[0127] Exemplarily, the control device of the power take-off further includes:

[0128] An identification module for identifying the voice feature information of the driver;

[0129] An adjustment module for adjusting the rotational speed of the power take-off based on the voice feature information.

[0130] The specific implementation manner of the control device of the power take-off in this application is basically the same as that of the embodiments of the above control method of the power take-off, and will not be elaborated here.

[0131] In addition, this application also provides a control device for a power take-off. As Figure 3 shown, Figure 3 is a schematic structural diagram of the hardware operating environment involved in the embodiment solution of this application.

[0132] Exemplarily, Figure 3 it can be a schematic structural diagram of the hardware operating environment of the control device for the power take-off.

[0133] As Figure 3 shown, the control device for the power take-off may include a processor 301, a communication interface 302, a memory 303, and a communication bus 304. Among them, the processor 301, the communication interface 302, and the memory 303 communicate with each other through the communication bus 304. The memory 303 is used to store a computer program; when the processor 301 executes the program stored on the memory 303, it realizes the steps of the control method of the power take-off.

[0134] The communication bus 304 mentioned in the above control device for the power take-off may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This communication bus 304 can be divided into an address bus, a data bus, a control bus, etc. For the sake of convenience of representation, only a thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

[0135] The communication interface 302 is used for communication between the above control device for the power take-off and other devices.

[0136] The memory 303 may include a Random Access Memory (RAM), and may also include a Non-Volatile Memory (NM), such as at least one disk memory. Optionally, the memory 303 may also be at least one storage device located far from the aforementioned processor 301.

[0137] The above-mentioned processor 301 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0138] The specific implementation manners of the control device of the power take-off of this application are basically the same as those of the embodiments of the above-mentioned power take-off control method, and will not be elaborated herein.

[0139] In addition, an embodiment of this application also proposes a computer-readable storage medium, on which a control program of the power take-off is stored. When the control program of the power take-off is executed by a processor, the steps of the power take-off control method as described above are implemented.

[0140] The specific implementation manners of the computer-readable storage medium of this application are basically the same as those of the embodiments of the above-mentioned power take-off control method, and will not be elaborated herein.

[0141] It should be noted that in this article, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without more limitations, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including that element.

[0142] The serial numbers of the embodiments of the above-mentioned application of this application are only for description and do not represent the superiority or inferiority of the embodiments.

[0143] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-described embodiment methods can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases, the former is a better implementation method. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions for causing a terminal device (which can be a mobile phone, computer, server, device, or network device, etc.) to execute the methods described in various embodiments of the present application.

[0144] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A method for controlling a power take-off, characterized in that: The method comprises: When the power domain controller receives a power take-off command input by the driver, it determines whether the current state meets the power take-off conditions. The power take-off command is triggered when it detects that the vehicle's brake pedal is depressed, the key is in the ST gear and released, the vehicle's high pressure reaches the Ready state, the shift handle is in the N gear, the parking brake is applied, and a high-level signal is received from the power take-off solenoid valve rocker; If the power take-off condition is met, a first status message is sent to the transmission controller, and a second status message is sent to the motor controller; the transmission controller is used to control the power take-off solenoid valve to be attracted; the motor controller is used to adjust the motor controller to enter the speed control mode; The speed control unit receives a speed control instruction input by the driver through the speed control switch, and controls the motor to adjust the speed of the power take-off based on the speed control instruction, so as to take off additional power through the power take-off.

2. The method according to claim 1, wherein The speed control instruction is an increase speed instruction or a decrease speed instruction. The receiving of the speed control instruction input by the driver through the speed control switch and controlling the motor to adjust the speed of the power take-off based on the speed control instruction includes: If the speed regulation instruction is an increasing speed instruction, increasing the speed of the power take-off from the initial speed to the first speed; If the speed regulation instruction is a deceleration instruction, the speed of the power take-off is reduced from the initial speed to a second speed.

3. The method according to claim 1, wherein When the power domain controller receives the power take-off instruction input by the driver, determining whether the current state meets the power take-off condition includes: Upon receiving a power take-off command input by a driver, obtaining operating condition information of the vehicle; the operating condition information includes the driving speed of the vehicle and the high-voltage state information of the vehicle; If the driving speed of the vehicle is less than or equal to the preset driving speed, and the high-pressure state information is in a completion preparation state, it is determined that the operating condition information meets the power take-off condition.

4. The method according to claim 1, wherein If the power take-off condition is met, after sending the first status message to the transmission controller, the method further includes: When the transmission controller receives the first status message, it generates a high level signal; Based on the high-level signal, the solenoid valve of the power take-off is controlled to be engaged.

5. The method according to claim 1, wherein The power take-off instruction includes a first power take-off instruction. When the power domain controller receives the power take-off instruction input by the driver, after determining whether the current state meets the power take-off condition, the method includes: determining a power take-off strategy of the driver based on the power take-off instruction; If the power take-off instruction is the first power take-off instruction, it is determined that the driver's power take-off strategy is to control the variable constant speed movement of the power take-off through the cruise control combination switch.

6. The method according to claim 1, wherein After receiving the speed control instruction input by the driver through the speed control switch and controlling the motor to adjust the speed of the power take-off based on the speed control instruction, the method includes: Displaying the rotation speed of the power take-off on an interactive interface of the vehicle; If the rotational speed is equal to a first preset rotational speed, a first prompt message is output; the first prompt message is used to prompt the driver that the current rotational speed has reached the maximum rotational speed of the power take-off; If the rotational speed is equal to a second preset rotational speed, a second prompt message is output; the second prompt message is used to prompt the driver that the current rotational speed has reached the minimum rotational speed of the power take-off.

7. The method according to claim 5, wherein If the power take-off instruction is the first power take-off instruction, after determining that the driver's power take-off strategy is to control the power take-off to move at a variable constant speed through a cruise control combination switch, the method further includes: Identifying the driver's voice feature information; Based on the voice feature information, the rotational speed of the power take-off is adjusted.

8. A control device for a power take-off, characterized in that: The device comprises: a judgment module, configured to judge whether the current state satisfies the power take-off conditions when the power domain controller receives a power take-off command input by the driver. The power take-off command is triggered when it is detected that the vehicle's brake pedal is depressed, the key is in the ST gear and released, the vehicle's high pressure reaches the Ready state, the shift handle is in the N gear, the parking brake is applied, and a high-level signal from the power take-off solenoid valve rocker is received; a sending module, configured to send a first status message to a transmission controller and a second status message to a motor controller if a power take-off condition is met; the transmission controller is configured to control the power take-off solenoid valve to engage; and the motor controller is configured to adjust the motor controller to enter a speed control mode; The receiving module is used to receive the speed control instruction input by the driver through the speed control switch, and control the motor to adjust the speed of the power take-off based on the speed control instruction to perform additional power take-off through the power take-off.

9. A control device for a power take-off, characterized in that: The control device of the power take-off includes a memory, a processor, and a control program of the power take-off stored in the memory and executable on the processor. When the control program of the power take-off is executed by the processor, the steps of the control method of the power take-off according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a control program for a power take-off, and when the control program for the power take-off is executed by a processor, the steps of the method for controlling a power take-off according to any one of claims 1 to 7 are implemented.

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