CN111017002A - Commercial vehicle steering column resetting system with memory function and control method thereof - Google Patents
Commercial vehicle steering column resetting system with memory function and control method thereof Download PDFInfo
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- CN111017002A CN111017002A CN201911155995.8A CN201911155995A CN111017002A CN 111017002 A CN111017002 A CN 111017002A CN 201911155995 A CN201911155995 A CN 201911155995A CN 111017002 A CN111017002 A CN 111017002A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/16—Steering columns
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D15/00—Steering not otherwise provided for
- B62D15/02—Steering position indicators ; Steering position determination; Steering aids
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Steering Controls (AREA)
- Power Steering Mechanism (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
Abstract
The invention relates to a commercial vehicle steering column resetting system with a memory function, wherein a hardware part of the resetting system comprises a main control unit, a key circuit, a driving circuit, a power supply conversion circuit, an overcurrent and overvoltage protection circuit and a direct current motor; the key circuit comprises four key switches, the four key switches are used for human-computer interaction, every two switches control the forward rotation and the reverse rotation of one direct current motor, and the four key switches respectively control the forward rotation and the reverse rotation of the two direct current motors, so that the up-down and front-back movement of the vehicle steering wheel are realized. The invention controls the positive and negative rotation of the two direct current motors through the PWM signal control to control the specific position of the steering column, and the commercial vehicle steering column resetting system with the memory function and the control method thereof have the advantages of quick response, simpler control operation steps and convenient application.
Description
Technical Field
The invention relates to a commercial vehicle steering column resetting system with a memory function and a control method thereof, which are mainly applied to position memory and control of a commercial vehicle steering column.
Background
The steering column memory function is a functional configuration for storing the position of the steering wheel, and can be automatically or one-key adjusted to a set position when a driver is replaced. The steering column and the memory function are not applied in the field of commercial vehicles at present, and the memory function can be realized only by the position of an electrically adjusted steering wheel.
The memory principle of the steering column is that a memory chip is arranged in the steering column, personal information set by a user can be stored, when different user information needs to be called, the steering column can restore the position set by the user in an electric adjustment mode, and intelligent management is achieved. Traditionally, the locking mechanism is unlocked by a handle or cylinder and then manually adjusted by holding the steering wheel.
Disclosure of Invention
The invention aims to overcome the defects and provide a commercial vehicle steering column resetting system with a memory function and a control method thereof, wherein the commercial vehicle steering column resetting system is quick in response, simple in control operation steps and convenient to apply.
The purpose of the invention is realized as follows:
a commercial vehicle steering column resetting system with a memory function comprises a hardware part, a main control unit, a key circuit, a driving circuit, a power conversion circuit, an overcurrent and overvoltage protection circuit and a direct current motor, wherein the main control unit is connected with the key circuit; the key circuit comprises four key switches, the four key switches are used for human-computer interaction, every two switches control the forward rotation and the reverse rotation of one direct current motor, and the four key switches respectively control the forward rotation and the reverse rotation of the two direct current motors, so that the up-down and front-back movement of the vehicle steering wheel are realized.
A commercial vehicle steering column resetting system with a memory function is characterized in that a control method of the commercial vehicle steering column resetting system comprises the following specific steps:
step one, start
A driver gets on the vehicle, and the system is powered on;
step two, initialization
Activating a steering column resetting system of the commercial vehicle with a memory function;
step three, whether the ID is received
Inputting the ID information of the driver, entering the next step if the ID is detected to be received, and returning to the previous step to perform system initialization again if the ID is not detected to be received;
step four, inquiring ID
Inquiring the ID information of the driver input in the previous step;
step five, whether the ID exists or not
If the ID information of the driver input in the step four does not exist, newly creating the ID information and storing the ID; subsequently, after the position of the steering column is adjusted through the manual control key, the position information of the steering column under the ID information is immediately recorded and is matched with the ID information of a driver;
if the driver's ID information input in step four exists, the next step is directly entered,
step six, PWM signals are adopted, and the motor runs
Matching corresponding steering column position information according to the ID information inquired in the step five, and controlling the direct current motor to rotate through the PWM signal;
step seven, whether the specified position is reached or not
After the direct current motor rotates, detecting whether the steering column reaches a corresponding designated position in the position information in real time, if not, continuing to rotate the direct current motor, and if so, stopping rotating the direct current motor and entering the next step;
step eight, whether to press a key or not
Detecting whether a key is pressed, if a corresponding key signal is sent, returning to the step six according to the corresponding key signal, controlling the motor to operate again according to the latest key information through a PWM signal, and if no key signal is sent, entering the next step;
and step nine, ending.
Preferably, in the fifth step, the process of adjusting the position of the steering column through a manual control key corresponding to the newly-built ID information is a motor control flow step;
the motor control flow comprises the following steps:
step one, start
Step two, initialization
Initializing a motor control flow;
step three, pressing the key, and detecting whether the key is pressed or not by the system
If the key is not pressed, returning to the previous step to initialize again;
if the key is detected to be pressed, entering the next step;
step four, judging the key-press, triggering the interrupt
Judging the type of the key, and triggering interruption;
step five, controlling the motor to run by PWM signals
Controlling the positive and negative rotation of the corresponding direct current motor according to the type of the key in the step four;
step six, judging whether the motor reaches the end point
Judging whether a position preset value end point of the motor is reached or not according to the preset information direction of the motor, if not, continuing to rotate the direct current motor, and if so, stopping rotating the direct current motor and entering the next step;
step seven, whether to switch the key
If the key is switched, returning to the step four, judging the type of the key again, and triggering interruption;
if the key is not switched, the next step is carried out;
step eight, end
And (5) the steering column of the commercial vehicle is in place, and the control flow of the motor is finished.
Preferably, in the sixth step, the corresponding steering column position information is matched according to the ID information inquired in the fifth step, and the power-on control flow is performed;
the power-on control flow comprises the following steps:
step one, start
Step two, initialization
Initializing a power-on control flow;
step three, the motor operates
The direct current motor starts to operate;
step four, whether to return to before the power failure
Detecting whether the position of the direct current motor is positioned before power failure, if not, returning to the motor in the third step for running again, and if so, entering the next step;
step five, normal operation
The direct current motor normally operates;
step six, whether the key is pressed down or not
Detecting whether a key is pressed down, if so, the motor acts according to the key condition, and if not, the motor operation is finished;
step seven, end
And after the electrification is finished, the electrification control flow is finished.
Preferably, the power-down control flow step is performed in step nine,
the power-off control flow comprises the following steps:
step one, start
Step two, initialization
Initializing a power-off control flow;
step three, power failure detection
Detecting whether power is off or not, if power is not off, returning to the previous step for initializing again, and if power is off, entering the next step;
fourthly, the motor returns to 0, and the pulse number is counted
The direct current motor rotation count returns to 0, and the pulse number begins to be calculated;
step five, whether the value is returned to 0
Detecting whether the motor in the fourth step returns to 0, if not, returning to the fourth step again, and if yes, entering the next step;
step six, storing the pulse number
Store the number of pulses in the current state
Step seven, end
And after the power failure is finished, the power failure control flow is finished.
Preferably, the ID information is various biometric feature data including one or more of a human face, an iris, a fingerprint, and a voice control.
Compared with the prior art, the invention has the beneficial effects that:
the invention controls the positive and negative rotation of the two direct current motors through the PWM signal control to control the specific position of the steering column, and the commercial vehicle steering column resetting system with the memory function and the control method thereof have the advantages of quick response, simpler control operation steps and convenient application.
Drawings
FIG. 1 is a schematic diagram of a resetting system of a steering column of a commercial vehicle with a memory function.
Fig. 2 is a schematic diagram of a power conversion circuit in a steering column resetting system of a commercial vehicle with a memory function.
Fig. 3 is a schematic diagram of a main control unit in a commercial vehicle steering column resetting system with a memory function.
FIG. 4 is a schematic diagram of a driving circuit in a steering column resetting system of a commercial vehicle with a memory function.
FIG. 5 is a schematic diagram of a key circuit in a resetting system of a steering column of a commercial vehicle with a memory function.
Fig. 6 is a schematic diagram of a motor control flow of a commercial vehicle steering column resetting system with a memory function.
Fig. 7 is a schematic diagram of a power-off control flow of a commercial vehicle steering column resetting system with a memory function.
Fig. 8 is a schematic diagram of a power-on control flow of a commercial vehicle steering column resetting system with a memory function.
FIG. 9 is a schematic diagram of a control method of a steering column resetting system of a commercial vehicle with a memory function.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 9, the hardware of the steering column resetting system of a commercial vehicle with a memory function according to the present invention includes a main control unit, a key circuit, a driving circuit, a power conversion circuit, an overcurrent and overvoltage protection circuit, and a dc motor; the number of the direct current motors is two, the stroke of the direct current motor is 50-60mm, and the direct current motor can be adjusted according to design requirements. The utility model provides a take commercial car steering column reset system's of memory function button circuit includes four key switches, uses four key switches to be responsible for man-machine interaction, and per two switches control a direct current motor's corotation and reversal, and four key switches control two direct current motor's just reversal respectively to realize vehicle steering wheel from top to bottom and back-and-forth movement. In order to facilitate the expansion of functions and the debugging of the circuit, an interface circuit which is composed of TJA1040 and is communicated with an automobile electronic control unit is reserved in the circuit. The main control unit 1 is internally provided with a charged erasable programmable read only memory (eeprom).
The power supply conversion circuit obtains electricity from an external power supply, the power supply conversion circuit supplies power to the main control unit, the key circuit and the driving circuit, the key circuit transmits key information to the main control unit, the main control unit feeds real-time information back to the driving circuit, the driving circuit controls the action of the direct current motor, data sampling is kept and fed back to the main control unit in the action process of the direct current motor, the action of the direct current motor is protected through the overcurrent and overvoltage protection circuit in the action process of the direct current motor, and once overcurrent occurs, the main control unit transmits signals to the driving circuit so as to control the action of the direct current motor in real time.
The power supply conversion circuit is connected with a power supply, 24V power is obtained from the power supply, the power supply conversion circuit supplies power to the motor from 24V voltage stabilization to 12V voltage stabilization, then supplies power to the MOS tube from 12V voltage stabilization to 5V voltage stabilization, and supplies power to the main control unit from 5V voltage stabilization to 3.3V voltage stabilization, the main control chip of the main control unit is S12G64 or stm32F103c8t6, and the main control unit can store the position information of the steering column corresponding to different IDs of each driver. The driving circuit is an H-bridge circuit built by MOSFET, the driving circuit controls the direct current motor to form PWM signal control, and the PWM signal control adopts the pulse number for calculation.
A control method of a commercial vehicle steering column resetting system with a memory function comprises the following steps:
the system comprises a motor control flow, a power-off control flow and a power-on control flow;
wherein:
the motor control flow comprises the following steps:
step one, start
Step two, initialization
Initializing a motor control flow;
step three, pressing the key, and detecting whether the key is pressed or not by the system
If the key is not pressed, returning to the previous step to initialize again;
if the key is detected to be pressed, entering the next step;
step four, judging the key-press, triggering the interrupt
Judging the type of the key, and triggering interruption;
step five, controlling the motor to run by PWM signals
Controlling the positive and negative rotation of the corresponding direct current motor according to the type of the key in the step four;
step six, judging whether the motor reaches the end point
Judging whether a position preset value end point of the motor is reached or not according to the preset information direction of the motor, if not, continuing to rotate the direct current motor, and if so, stopping rotating the direct current motor and entering the next step;
step seven, whether to switch the key
If the key is switched, returning to the step four, judging the type of the key again, and triggering interruption;
if the key is not switched, the next step is carried out;
step eight, end
And (5) the steering column of the commercial vehicle is in place, and the control flow of the motor is finished.
The power-off control flow comprises the following steps:
step one, start
Step two, initialization
Initializing a power-off control flow;
step three, power failure detection
Detecting whether power is off or not, if power is not off, returning to the previous step for initializing again, and if power is off, entering the next step;
fourthly, the motor returns to 0, and the pulse number is counted
The direct current motor rotation count returns to 0, and the pulse number begins to be calculated;
step five, whether the value is returned to 0
Detecting whether the motor in the fourth step returns to 0, if not, returning to the fourth step again, and if yes, entering the next step;
step six, storing the pulse number
Store the number of pulses in the current state
Step seven, end
And after the power failure is finished, the power failure control flow is finished.
The power-on control flow comprises the following steps:
step one, start
Step two, initialization
Initializing a power-on control flow;
step three, the motor operates
The direct current motor starts to operate;
step four, whether to return to before the power failure
Detecting whether the position of the direct current motor is positioned before power failure, if not, returning to the motor in the third step for running again, and if so, entering the next step;
step five, normal operation
The direct current motor normally operates;
step six, whether the key is pressed down or not
Detecting whether a key is pressed down, if so, the motor acts according to the key condition, and if not, the motor operation is finished;
step seven, end
And after the electrification is finished, the electrification control flow is finished.
The invention discloses a control method of a commercial vehicle steering column resetting system with a memory function, which comprises the following specific steps:
step one, start
A driver gets on the vehicle, and the system is powered on;
step two, initialization
Activating a steering column resetting system of the commercial vehicle with a memory function;
step three, whether the ID is received
Inputting ID information of the driver, wherein the ID information can be various biological identification characteristic data, such as one or more of face, iris, fingerprint and voice control, entering the next step if the ID is detected to be received, and returning to the previous step to perform system initialization again if the ID is not detected to be received;
step four, inquiring ID
Inquiring ID information of the driver input in the last step, wherein the ID information can be various biological identification characteristic data, such as one or more of human face, iris, fingerprint and voice control;
step five, whether the ID exists or not
If the ID information of the driver input in the step four does not exist, newly creating the ID information, and storing the ID in eeprom (namely storing the newly created ID information in the electrified erasable programmable read-only memory); subsequently, after the position of the steering column is adjusted through the manual control key, the position information of the steering column under the ID information is immediately recorded and is matched with the ID information of a driver; in the process, when the ID information is newly established, the corresponding process of adjusting the position of the steering column through a manual control key is the step of controlling the flow of the motor control;
if the driver's ID information input in step four exists, the next step is directly entered,
step six, PWM signals are adopted, and the motor runs
Matching corresponding steering column position information according to the ID information inquired in the step five, and controlling the direct current motor to rotate through the PWM signal; in the process, the corresponding steering column position information is matched according to the ID information inquired in the step five to carry out the electrifying control flow step;
step seven, whether the specified position is reached or not
After the direct current motor rotates, detecting whether the steering column reaches a corresponding designated position in the position information in real time, if not, continuing to rotate the direct current motor, and if so, stopping rotating the direct current motor and entering the next step;
step eight, whether to press a key or not
Detecting whether a key is pressed, if a corresponding key signal is sent, returning to the step six according to the corresponding key signal, controlling the motor to operate again according to the latest key information through a PWM signal, and if no key signal is sent, entering the next step;
nine steps are finished
And controlling the steering column to reach the specified position by the commercial vehicle steering column resetting system with the memory function to perform the step of power-off control flow.
The above is only a specific application example of the present invention, and the protection scope of the present invention is not limited in any way. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (6)
1. A commercial vehicle steering column resetting system with a memory function comprises a hardware part, a main control unit, a key circuit, a driving circuit, a power conversion circuit, an overcurrent and overvoltage protection circuit and a direct current motor, wherein the main control unit is connected with the key circuit; the key circuit comprises four key switches, the four key switches are used for human-computer interaction, every two switches control the forward rotation and the reverse rotation of one direct current motor, and the four key switches respectively control the forward rotation and the reverse rotation of the two direct current motors, so that the up-down and front-back movement of the vehicle steering wheel are realized.
2. The steering column resetting system with the memory function for the commercial vehicle as claimed in claim 1, wherein the control method comprises the following steps:
step one, start
A driver gets on the vehicle, and the system is powered on;
step two, initialization
Activating a steering column resetting system of the commercial vehicle with a memory function;
step three, whether the ID is received
Inputting the ID information of the driver, entering the next step if the ID is detected to be received, and returning to the previous step to perform system initialization again if the ID is not detected to be received;
step four, inquiring ID
Inquiring the ID information of the driver input in the previous step;
step five, whether the ID exists or not
If the ID information of the driver input in the step four does not exist, newly creating the ID information and storing the ID; subsequently, after the position of the steering column is adjusted through the manual control key, the position information of the steering column under the ID information is immediately recorded and is matched with the ID information of a driver;
if the driver's ID information input in step four exists, the next step is directly entered,
step six, PWM signals are adopted, and the motor runs
Matching corresponding steering column position information according to the ID information inquired in the step five, and controlling the direct current motor to rotate through the PWM signal;
step seven, whether the specified position is reached or not
After the direct current motor rotates, detecting whether the steering column reaches a corresponding designated position in the position information in real time, if not, continuing to rotate the direct current motor, and if so, stopping rotating the direct current motor and entering the next step;
step eight, whether to press a key or not
Detecting whether a key is pressed, if a corresponding key signal is sent, returning to the step six according to the corresponding key signal, controlling the motor to operate again according to the latest key information through a PWM signal, and if no key signal is sent, entering the next step;
and step nine, ending.
3. The commercial vehicle steering column resetting system with the memory function as claimed in claim 2, wherein in the fifth step, the process of adjusting the position of the steering column through a manual control key when the ID information is newly established is the motor control flow step;
the motor control flow comprises the following steps:
step one, start
Step two, initialization
Initializing a motor control flow;
step three, pressing the key, and detecting whether the key is pressed or not by the system
If the key is not pressed, returning to the previous step to initialize again;
if the key is detected to be pressed, entering the next step;
step four, judging the key-press, triggering the interrupt
Judging the type of the key, and triggering interruption;
step five, controlling the motor to run by PWM signals
Controlling the positive and negative rotation of the corresponding direct current motor according to the type of the key in the step four;
step six, judging whether the motor reaches the end point
Judging whether a position preset value end point of the motor is reached or not according to the preset information direction of the motor, if not, continuing to rotate the direct current motor, and if so, stopping rotating the direct current motor and entering the next step;
step seven, whether to switch the key
If the key is switched, returning to the step four, judging the type of the key again, and triggering interruption;
if the key is not switched, the next step is carried out;
step eight, end
And (5) the steering column of the commercial vehicle is in place, and the control flow of the motor is finished.
4. The commercial vehicle steering column resetting system with the memory function as claimed in claim 2, wherein in the sixth step, the power-on control flow step is carried out according to the matching of the ID information inquired in the fifth step and the corresponding steering column position information;
the power-on control flow comprises the following steps:
step one, start
Step two, initialization
Initializing a power-on control flow;
step three, the motor operates
The direct current motor starts to operate;
step four, whether to return to before the power failure
Detecting whether the position of the direct current motor is positioned before power failure, if not, returning to the motor in the third step for running again, and if so, entering the next step;
step five, normal operation
The direct current motor normally operates;
step six, whether the key is pressed down or not
Detecting whether a key is pressed down, if so, the motor acts according to the key condition, and if not, the motor operation is finished;
step seven, end
And after the electrification is finished, the electrification control flow is finished.
5. The steering column resetting system with the memory function for the commercial vehicle as claimed in claim 2, wherein the power-off control flow process step is performed in the ninth step,
the power-off control flow comprises the following steps:
step one, start
Step two, initialization
Initializing a power-off control flow;
step three, power failure detection
Detecting whether power is off or not, if power is not off, returning to the previous step for initializing again, and if power is off, entering the next step;
fourthly, the motor returns to 0, and the pulse number is counted
The direct current motor rotation count returns to 0, and the pulse number begins to be calculated;
step five, whether the value is returned to 0
Detecting whether the motor in the fourth step returns to 0, if not, returning to the fourth step again, and if yes, entering the next step;
step six, storing the pulse number
Store the number of pulses in the current state
Step seven, end
And after the power failure is finished, the power failure control flow is finished.
6. The steering column resetting system with memory function for commercial vehicle as claimed in claim 2, wherein the ID information is various biometric feature data including one or more of human face, iris, fingerprint, and voice control.
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|---|---|---|---|---|
| CN112158254A (en) * | 2020-08-06 | 2021-01-01 | 东风汽车集团有限公司 | Calibration method of electric adjusting steering column |
| CN112158254B (en) * | 2020-08-06 | 2021-09-17 | 东风汽车集团有限公司 | Calibration method of electric adjusting steering column |
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| CN111017002B (en) | 2021-07-27 |
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