CN115675073A - Vehicle power takeoff control method and device for preventing misoperation - Google Patents
Vehicle power takeoff control method and device for preventing misoperation Download PDFInfo
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- CN115675073A CN115675073A CN202211233903.5A CN202211233903A CN115675073A CN 115675073 A CN115675073 A CN 115675073A CN 202211233903 A CN202211233903 A CN 202211233903A CN 115675073 A CN115675073 A CN 115675073A
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Abstract
The invention provides a method and a device for controlling a vehicle power takeoff for preventing misoperation, wherein the control method comprises the following steps: responding to a control instruction of the power takeoff, and judging whether the current vehicle condition meets a control condition corresponding to the control instruction; and when the current vehicle condition meets the control condition, executing the control instruction, otherwise, refusing the control instruction. The control method for the vehicle power takeoff for preventing misoperation can be used for safely checking the starting and stopping power takeoff and avoiding safety accidents and part damage caused by misoperation.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a method and a device for controlling a vehicle power takeoff for preventing misoperation.
Background
The power takeoff is a common power output device on engineering vehicles and trucks and is used for providing additional power to meet the operation requirements of additional functions of the vehicles, such as a dump truck, a fire truck, a sprinkler and the like. The vehicle power takeoff is generally connected to a low-gear of the transmission or an output shaft of the auxiliary box, and outputs power to an external working device. Engagement and disengagement of the power take-off gear with the transmission is achieved by the opening and closing of a solenoid valve. The driver operates the special power takeoff start/stop switch to control the electromagnetic valve, if there is no effective anti-misoperation design, great potential safety hazard can be brought, if the switch is touched by mistake in the high-speed driving process, the gear of the power takeoff is directly meshed, great resistance is generated to the driving of the automobile, and the driving safety is influenced.
In the prior art, the safety check mode for preventing misoperation is that the power takeoff can be started when the gearbox is in a neutral position or the current vehicle speed is in low-speed running, but the power takeoff cannot be stopped, and if the engine is in a high rotating speed, the gear of the power takeoff is separated, so that the gearbox or an external output device can be damaged.
Disclosure of Invention
The invention aims to solve the technical problem that misoperation of a power takeoff can be caused in the driving process so as to cause potential safety hazards, and provides a method and a device for controlling the power takeoff of a vehicle for preventing misoperation.
The invention adopts the technical scheme that the control method of the vehicle power takeoff for preventing misoperation comprises the following steps:
responding to a control instruction of the power takeoff, and judging whether the current vehicle condition meets a control condition corresponding to the control instruction;
and when the current vehicle condition meets the control condition, executing a control instruction, otherwise, rejecting the control instruction.
In one embodiment, the determining whether the current vehicle condition satisfies the control condition corresponding to the control instruction in response to the control instruction to the power takeoff device includes:
and responding to a control instruction of the power takeoff, and judging whether the current transmission gear, the engine speed and the parking state of the vehicle meet the control conditions corresponding to the control instruction.
In one embodiment, after the step of executing a control command when the current vehicle condition satisfies the control condition, and otherwise rejecting the control command, the method further comprises:
and detecting the working state of the power takeoff.
In one embodiment, after the step of detecting the operating state of the power take-off, the method further comprises:
varying the output power of the power take-off in response to a speed control command to the power take-off.
Another aspect of the present invention provides a vehicle power takeoff control apparatus for preventing an erroneous operation, comprising:
the judging module is configured to respond to a control instruction of the power takeoff and judge whether the current vehicle condition meets a control condition corresponding to the control instruction;
and the execution module executes the control instruction when the current vehicle condition meets the control condition, and rejects the control instruction if the current vehicle condition does not meet the control condition.
In one embodiment, the determining module is further configured to:
and responding to a control instruction of the power takeoff, and judging whether the current transmission gear, the engine speed and the parking state of the vehicle meet the control conditions corresponding to the control instruction.
In one embodiment, the apparatus further comprises a detection module configured to: and detecting the working state of the power takeoff.
In one embodiment, the apparatus further comprises a rotational speed control module configured to: varying the output power of the power take-off in response to a speed control command to the power take-off.
Another aspect of the present invention also provides an electronic device, including: memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method as described in any of the above.
Yet another aspect of the invention provides a computer storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method as recited in any of the above.
By adopting the technical scheme, the invention at least has the following advantages:
the control method for the vehicle power takeoff for preventing the misoperation can be used for safely checking the starting and stopping power takeoff and avoiding safety accidents and part damage caused by misoperation.
Drawings
FIG. 1 is a flow chart of a method for controlling a vehicle power takeoff to prevent false operation according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a control system according to an exemplary embodiment of the present invention;
FIG. 3 is a flowchart of a control method of an application example according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a vehicle power take-off control device for preventing misoperation according to an embodiment of the invention;
fig. 5 is a schematic diagram of an electronic device according to an embodiment of the invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined purposes, the present invention is described in detail below with reference to the accompanying drawings and preferred embodiments.
The description of the method flow in the present specification and the steps of the flow chart in the drawings of the present specification are not necessarily strictly performed by the step numbers, and the execution order of the method steps may be changed. Moreover, certain steps may be omitted, multiple steps combined into one step execution, and/or a step broken into multiple step executions.
The first embodiment of the invention, a method for controlling a vehicle power takeoff for preventing misoperation, as shown in fig. 1, comprises the following specific steps:
step S1, responding to a control instruction of a power takeoff, and judging whether the current vehicle condition meets a control condition corresponding to the control instruction;
and S2, when the current vehicle condition meets the control condition, executing the control instruction, otherwise, rejecting the control instruction.
The method provided in this embodiment will be described in detail in steps.
And S1, responding to a control instruction of the power takeoff, and judging whether the current vehicle condition meets a control condition corresponding to the control instruction.
In the present embodiment, a power take-off control unit is provided in the power take-off, and the method of the present embodiment is performed by configuring the power take-off control unit.
Further, the power takeoff also comprises an electromagnetic valve and an actuating mechanism, and when the electromagnetic valve is switched on, the actuating mechanism executes the current work task of the vehicle; on the contrary, when the electromagnetic valve is disconnected, the execution mechanism stops working.
Furthermore, the output power of the actuating mechanism can be controlled by the power takeoff control unit so as to meet different working condition requirements.
That is, in this embodiment, the control commands to the power take-off may include entering the power take-off, exiting the power take-off, and adjusting the output of the power take-off.
When a control instruction entering the power takeoff is received, the control instruction may be a control instruction generated by misoperation, and in order to avoid the above situation, the power takeoff control unit may determine whether the current vehicle state meets the control condition corresponding to the control instruction.
For example, the power take-off control unit may determine whether the vehicle has the vehicle condition for entering the power take-off, i.e. the corresponding control condition, by acquiring the current transmission gear, the engine speed and the parking state of the vehicle.
Similarly, when a control command for exiting the power takeoff is received, the control command may be a control command generated by an erroneous operation, and to avoid the above situation, the power takeoff control unit may determine whether the current vehicle state satisfies the control condition corresponding to the control command.
For example, the power take-off control unit may determine whether the vehicle has the vehicle condition for entering the power take-off, i.e. the corresponding control condition, by acquiring the current transmission gear, the engine speed and the parking state of the vehicle.
Similarly, when a control command for adjusting the output power of the power take-off is received, it is possible that the control command is a control command generated by an erroneous operation, and to avoid this, it may be determined by the power take-off control unit whether or not the current state of the vehicle satisfies the control condition corresponding to the control command.
For example, the power take-off control unit may determine whether the vehicle has the vehicle condition for entering the power take-off, i.e. the corresponding control condition, by acquiring the current transmission gear, the engine speed and the parking state of the vehicle.
And S2, when the current vehicle condition meets the control condition, executing the control instruction, otherwise, rejecting the control instruction.
In this embodiment, in a general case, the power takeoff control unit executes the control command only when three conditions (a transmission gear, an engine speed, and a parking state) are simultaneously satisfied with a preset condition threshold, and the selection of the conditions and the selection of the corresponding threshold may be modified within a reasonable range according to actual needs, which is not limited herein.
In order to facilitate the use of the power takeoff by the user and to obtain the use state of the power takeoff in real time, a display unit, such as a liquid crystal display, corresponding to the power takeoff may be provided at the current vehicle. When the power takeoff receives a control command, the processing process and the processing result can be fed back through the display unit.
In this embodiment, a detection module may be pre-configured in the vehicle, and the detection module is configured to detect whether the power takeoff of the detection module actually executes the control command after the detection module executes the control command when the current vehicle condition satisfies the control condition. That is, when the vehicle receives a control command to enter the power take-off and the conditions for entering the power take-off are met, the detection module may determine whether the control command was successfully executed by checking whether the solenoid valve was successfully connected. When the electromagnetic valve is successfully connected, the feedback power takeoff enters successfully, and when the electromagnetic valve is not connected, the feedback power takeoff fails to enter.
Likewise, the detection module can also be applied to the exit process of the power takeoff or the adjustment process of the output power of the power takeoff, which will not be described in detail herein.
Furthermore, the feedback content of the detection module can also be visually presented to the user through the display unit, so that the interaction purpose is achieved, and the user can conveniently and visually know the current state of the power takeoff.
In this embodiment, in order to further monitor and adjust various parameters of the vehicle, an engine control unit may be configured for the engine and a transmission control unit may be configured for the transmission. When the rotating speed of the engine and/or the gear of the transmission do not meet the control conditions corresponding to the control commands, intervention and adjustment can be carried out on related parameters through the corresponding control units.
In this embodiment, when the user depresses the accelerator pedal or the brake pedal, the engine control unit also captures the operation, and in response to the acceleration/braking operation, the rotation speed of the engine is adjusted to the initial rotation speed, thereby further ensuring the driving safety of the vehicle.
Compared with the prior art, the embodiment has at least the following advantages:
1) The invention can carry out safety check on the power takeoff which is started and stopped, and avoid safety accidents and part damage caused by misoperation.
2) The power takeoff state display and operation prompt device is combined with the display unit to display the state and prompt the operation of the power takeoff, so that the man-machine interaction effect is improved, and the power takeoff state display and operation prompt device can be used for automatically driving off-road vehicles.
A second embodiment of the present invention is based on the first embodiment, and an application example of the present invention is described with reference to fig. 2 to 3.
Fig. 2 shows a control system of an anti-misoperation power takeoff, which comprises an engine control unit, which communicates with the power takeoff control unit through a CAN bus to provide a current engine speed signal, a parking brake state, a service brake state and an accelerator pedal state; the transmission control unit is communicated with the power takeoff control unit through a CAN bus and provides a current gear signal of the transmission;
furthermore, the power takeoff comprises a power takeoff control unit, an electromagnetic valve and an actuating mechanism, wherein the input end of the electromagnetic valve is connected with the power takeoff control unit, and the output end of the electromagnetic valve is connected with the actuating mechanism; the operating switch comprises a power takeoff starting/stopping switch and a rotating speed adjusting switch and is used for a driver to start/close a power takeoff function and adjust output power, the rotating speed adjusting switch is provided with 3 gears, and the operating switch is connected with the power takeoff control unit; the detection device pressure sensor is arranged on the transmission, is in communication connection with the power take-off control unit and is used for feeding back an execution completion signal to the power take-off control unit when detecting that the execution mechanism completes engagement and disengagement; in a preferred embodiment, the control system further comprises a liquid crystal instrument which is communicated with the power takeoff control unit through a CAN bus and is used for integrally displaying the working state of the system and prompting the driver to operate.
Specifically, as shown in fig. 3, the control method of the system includes:
after the vehicle is started, when a driver turns on a power takeoff starting/stopping switch, a power takeoff control unit judges whether a power takeoff entering function is available or not according to a transmission gear signal, an engine rotating speed signal and a parking state, and prompts the driver to operate through a liquid crystal instrument.
When the N gear of the gearbox is met (condition 1), the rotating speed of an engine is less than 1000rpm (condition 2), and a parking brake signal is effective, the vehicle is in a parking state (condition 3), the power takeoff control unit 1 judges that a power takeoff state can be entered, and meanwhile, the electromagnetic valve is enabled, and the actuating mechanism is engaged.
When any one of the three conditions is not met, the power takeoff control unit sends a state to the liquid crystal instrument through the CAN bus, and the liquid crystal instrument pops the window to prompt a driver after receiving a signal: the vehicle cannot enter the PTO and please check.
If the actuating mechanism is meshed successfully, the pressure sensor feeds back a signal to the power takeoff control unit, the power takeoff control unit sends a state to the liquid crystal instrument through the CAN bus, and the liquid crystal instrument lights a green indicating lamp after receiving the signal.
If the engagement of the actuating mechanism is unsuccessful, the liquid crystal instrument receives a signal and then pops the window to prompt a driver: the vehicle cannot enter the PTO and please check.
After entering a power take-off state, a driver can adjust the output power by operating a rotating speed adjusting switch, and 3 gears are set by default; at the moment, if the states of an accelerator pedal and a service brake pedal are changed, the rotating speed of the engine is restored to the initial setting.
When the driver turns off the power takeoff starting/stopping switch, the power takeoff control unit judges whether the power takeoff withdrawing function is available or not according to the engine rotating speed signal.
And when the engine rotating speed is less than 1000rpm, judging that the power taking state can be exited, and simultaneously disconnecting the electromagnetic valve to separate the actuating mechanism.
When the rotating speed of the engine is more than 1000rpm, the power takeoff control unit is communicated with the engine control unit through a CAN bus, and the rotating speed is reduced to the initial setting and then the separation action is executed.
If the actuator is successfully separated, the pressure sensor feeds back a signal to the power takeoff control unit, the power takeoff control unit sends a state to the liquid crystal instrument through the CAN bus, and the liquid crystal instrument extinguishes the green indicator light after receiving the signal.
If the separation is not successful, the liquid crystal instrument receives a signal and then pops the window to prompt a driver: the vehicle fails to exit the PTO, please check.
A third embodiment of the present invention, which corresponds to the first embodiment, is a control device of a power takeoff for a vehicle for preventing an erroneous operation, as shown in fig. 4, and includes the following components:
the judging module is configured to respond to a control instruction of the power takeoff and judge whether the current vehicle condition meets the control condition corresponding to the control instruction;
and the execution module executes the control command when the current vehicle condition meets the control condition, and rejects the control command if the current vehicle condition does not meet the control condition.
In this embodiment, the determining module is further configured to: and responding to a control instruction of the power takeoff, and judging whether the current transmission gear, the engine speed and the parking state of the vehicle meet the control conditions corresponding to the control instruction.
In this embodiment, the apparatus further comprises a detection module configured to: and detecting the working state of the power takeoff.
In this embodiment, the apparatus further comprises a rotational speed control module configured to: the output power of the power take-off is varied in response to a speed control command to the power take-off.
A fourth embodiment of the present invention, an electronic device, as shown in fig. 5, can be understood as a physical device, and includes a processor and a memory storing instructions executable by the processor, and when the instructions are executed by the processor, the electronic device performs the following operations:
step S1, responding to a control instruction of a power takeoff, and judging whether the current vehicle condition meets a control condition corresponding to the control instruction;
and S2, executing a control instruction when the current vehicle condition meets the control condition, and otherwise, rejecting the control instruction.
In the fifth embodiment of the present invention, the flow of the method for controlling the power takeoff of the vehicle for preventing the misoperation in the present embodiment is the same as that in the first, second, or third embodiments, but the difference is that in terms of engineering implementation, the present embodiment can be implemented by software plus a necessary general hardware platform, and certainly, the present embodiment can also be implemented by hardware, but the former is a better implementation manner in many cases. With this understanding in mind, the method of the present invention may be embodied in the form of a computer software product stored on a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and including instructions for causing a device (e.g., a network device such as a base station) to perform the method of the present invention.
In summary, compared with the prior art, the invention has at least the following advantages:
the invention can carry out safety check on the power takeoff which is started and stopped, and avoid safety accidents and part damage caused by misoperation.
2) The invention combines the display unit to display the state and prompt the operation of the power takeoff, thereby improving the man-machine interaction effect and being used for automatically driving the off-road vehicle.
While the invention has been described in connection with specific embodiments thereof, it is to be understood that it is intended by the appended drawings and description that the invention may be embodied in other specific forms without departing from the spirit or scope of the invention.
Claims (10)
1. A method for controlling a power take-off of a vehicle for preventing erroneous operation, comprising:
responding to a control instruction of the power takeoff, and judging whether the current vehicle condition meets a control condition corresponding to the control instruction;
and when the current vehicle condition meets the control condition, executing the control instruction, otherwise, rejecting the control instruction.
2. The method for controlling the power takeoff of the vehicle for preventing the misoperation according to the claim 1, wherein the step of judging whether the current vehicle condition meets the control condition corresponding to the control instruction in response to the control instruction to the power takeoff comprises the following steps:
and responding to a control instruction of the power takeoff, and judging whether the current transmission gear, the engine speed and the parking state of the vehicle meet the control conditions corresponding to the control instruction.
3. The method of claim 1, wherein the step of executing the control command when the current vehicle conditions satisfy the control conditions, and otherwise rejecting the control command is followed by the step of:
and detecting the working state of the power takeoff.
4. The method of claim 3, wherein the step of detecting the operational status of the power take-off is followed by the method further comprising:
varying the output power of the power take-off in response to a speed control command to the power take-off.
5. A vehicle power take-off control device for preventing erroneous operation, comprising:
the judging module is configured to respond to a control instruction of the power takeoff and judge whether the current vehicle condition meets a control condition corresponding to the control instruction;
and the execution module executes the control instruction when the current vehicle condition meets the control condition, and rejects the control instruction if the current vehicle condition does not meet the control condition.
6. The vehicle power takeoff control device for preventing misuse of claim 5, wherein said decision module is further configured to:
and responding to a control command of the power takeoff, and judging whether the current transmission gear, the engine speed and the parking state of the vehicle meet the control conditions corresponding to the control command.
7. The vehicle power takeoff control device for preventing false operation of claim 5, further comprising a detection module configured to: and detecting the working state of the power takeoff.
8. The vehicle power takeoff control device for preventing false operations of claim 5, further comprising a rotational speed control module configured to: the output power of the power take-off is varied in response to a speed control command to the power take-off.
9. An electronic device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the method according to any one of claims 1 to 4.
10. A computer storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of the method according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211233903.5A CN115675073A (en) | 2022-10-10 | 2022-10-10 | Vehicle power takeoff control method and device for preventing misoperation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211233903.5A CN115675073A (en) | 2022-10-10 | 2022-10-10 | Vehicle power takeoff control method and device for preventing misoperation |
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| Publication Number | Publication Date |
|---|---|
| CN115675073A true CN115675073A (en) | 2023-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211233903.5A Pending CN115675073A (en) | 2022-10-10 | 2022-10-10 | Vehicle power takeoff control method and device for preventing misoperation |
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| CN (1) | CN115675073A (en) |
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- 2022-10-10 CN CN202211233903.5A patent/CN115675073A/en active Pending
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