CN216580680U - Steering wheel control circuit capable of electrically adjusting position - Google Patents
Steering wheel control circuit capable of electrically adjusting position Download PDFInfo
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- CN216580680U CN216580680U CN202123215604.2U CN202123215604U CN216580680U CN 216580680 U CN216580680 U CN 216580680U CN 202123215604 U CN202123215604 U CN 202123215604U CN 216580680 U CN216580680 U CN 216580680U
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- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 4
- 230000035484 reaction time Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
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- 208000003569 Central serous chorioretinopathy Diseases 0.000 description 1
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- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The utility model discloses a steering wheel control circuit capable of electrically adjusting position, which comprises a steering wheel, wherein the direction is adjusted by the forward rotation or the reverse rotation of a motor I to adjust the front-back distance of the steering wheel; the height of the steering wheel is adjusted through the forward rotation or the reverse rotation of the motor II; the operation of the first motor and the second motor is operated by a control circuit of the controller; the controller is connected with a key circuit; the key circuit comprises a front key and a rear key which respectively correspond to the first motor, and an upper key and a lower key which respectively correspond to the second motor; the controller is connected with the first motor and the second motor through the two motor driving circuits respectively, a motor driving chip is arranged in the motor driving circuits and provided with a feedback pin FB pin, the actual current of the motor passes through the FB pin and is sent to the single chip microcomputer, the single chip microcomputer compares the obtained current value with a standard threshold value, and when the current value exceeds the standard threshold value, the single chip microcomputer cuts off the power supply of the motor to protect the power supply.
Description
Technical Field
The utility model relates to the technical field of automobile steering wheels, in particular to a steering wheel control circuit capable of electrically adjusting the position.
Background
With the development of social economy, automobiles are more and more popular at present; with the improvement of living standard, people also put higher demands on the comfort of automobiles. Since each person has a different stature, when a driver wants to have a comfortable position to drive, the position of the steering wheel needs to be adjusted.
The traditional direction coil pipe column position adjusting device adopting a mechanical and manual mode through an adjusting handle has the problems of being labor-consuming, small in adjusting range, incapable of memorizing the adjusting position, incapable of linearly controlling the adjusting position and the like, so that the pursuit of a driver on comfort and convenience is difficult to meet.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a steering wheel control circuit capable of electrically adjusting the position; the technical problem can be effectively solved.
The utility model is realized by the following technical scheme:
a steering wheel control circuit capable of electrically adjusting the position comprises a steering wheel, wherein the steering wheel is connected with a first motor through a first transmission device, and the front-back distance of the steering wheel is adjusted through the forward rotation or the reverse rotation of the first motor; the steering wheel is connected with a second motor through a second transmission device, and the height of the steering wheel is adjusted by forward rotation or reverse rotation of the second motor; the operation of the first motor and the second motor is operated by a control circuit of the controller; the controller is connected with a key circuit; the key circuit comprises a front key and a rear key which respectively correspond to the first motor, and an upper key and a lower key which respectively correspond to the second motor; the controller is respectively connected with the first motor and the second motor through two motor driving circuits, a motor driving chip is arranged in each motor driving circuit, each motor driving chip is provided with a feedback pin FB pin, each FB pin is connected with the controller, actual current of each motor is sent to the single chip microcomputer through the FB pins, and the single chip microcomputer obtains a current value through ad operation; the single chip microcomputer compares the obtained current value with a standard threshold value, and when the current value exceeds the standard threshold value, the single chip microcomputer cuts off a power supply of the motor to protect the power supply.
Further, the driving circuit adopts a motor driving chip MC33926, and the operating voltage range of the motor driving chip MC33926 is 5V to 28V.
Furthermore, the controller is connected with a current sampling circuit, the current sampling circuit is connected with power supply circuits of the first motor and the second motor, the real-time currents of the first motor and the second motor are collected, the collected real-time currents are amplified through an operational amplifier circuit and then are sent to the single chip microcomputer. The current sampling circuit can directly transmit the signal of the motor to the single chip microcomputer, and therefore the reaction time is shortened. When the motor has an abnormal phenomenon, the abnormal point of the motor can be found more quickly, earlier and more accurately, the single chip microcomputer can quickly respond, and the power supply of the motor is cut off; the motor is further protected.
Furthermore, a Hall sensor is installed on the motor.
Furthermore, the single chip microcomputer is connected with an interface circuit, and the interface circuit comprises a power supply interface connected with an automobile battery, a motor interface connected with two motors and a sensor interface connected with a Hall sensor.
Furthermore, the single chip microcomputer is connected with a power supply voltage stabilizing circuit, the input end of the power supply voltage stabilizing circuit is connected with a power supply Vbat of the automobile, the power supply Vbat is divided into two paths after being connected, and the two paths are respectively a circuit I connected with the single chip microcomputer and a circuit II connected with a motor driving circuit;
furthermore, the output end of the first circuit is connected with the power supply input end of the singlechip through a filter circuit; and the second circuit is connected with the power input end of the motor driving chip and the acquisition circuit of the motor through the MOS tube circuit.
Advantageous effects
Compared with the traditional prior art, the steering wheel control circuit capable of electrically adjusting the position has the following beneficial effects:
(1) this technical scheme is through two motor drive circuit's setting to and motor drive chip is equipped with feedback pin FB pin, the FB pin is connected with the singlechip, send the singlechip to the actual current of motor through the FB pin, the singlechip is through received actual current signal, carry out ad operation with this signal value, obtain current value, the singlechip compares the current value that obtains with standard threshold value again, when current value surpassed standard threshold value, the singlechip cuts off the power that flows to the motor in the motor power voltage stabilizing circuit, play the guard action to the motor.
(2) According to the technical scheme, the current sampling circuit is arranged, so that the signal of the motor can be directly transmitted to the single chip microcomputer, and the reaction time is shortened. When the motor has an abnormal phenomenon, the abnormal point of the motor can be found more quickly, earlier and more accurately, the single chip microcomputer can quickly respond, and the power supply of the motor is cut off; the motor is further protected.
(3) According to the technical scheme, the Hall sensor and the single chip microcomputer are arranged, the Hall sensor sends signals to the single chip microcomputer through the operational amplifier circuit according to the rotating speed obtained through monitoring, the single chip microcomputer converts the rotating speed into the moving distance of the steering wheel through internal software, and the adjusted distance of the steering wheel is memorized. Achieving the effect of memory.
Drawings
Fig. 1 is an overall circuit diagram of the controller according to the present invention.
Fig. 2 is a schematic view of the structure of the steering wheel in the present invention.
Fig. 3 is an external structural view of the steering wheel in the present invention.
Fig. 4 is a schematic view of the moving direction of the steering wheel of the present invention.
Reference numbers in the drawings: the steering wheel comprises a steering wheel 1, a steering shaft 2, a steering transmission shaft 3, a screw rod I31, an internal thread support 32, a steering wheel bottom support 33, a transmission device I4, a connecting rod 41, a universal coupling 42, a motor I5, a transmission device II 6, a screw rod II 61, an internal thread sleeve 62, a connecting piece 63, a hinge 64 and a motor II 7.
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.
As shown in fig. 1-4, a steering wheel control circuit capable of electrically adjusting position, a specific structure of a steering wheel 1 includes a steering shaft 2 disposed at the bottom of the steering wheel 1, and a steering transmission shaft 3 disposed at the bottom of the steering shaft 2; the steering transmission shaft 3 is a telescopic rod, the bottom of the telescopic rod is connected with a motor I5 through a transmission device I4, the inner rod is driven to extend out or retract through forward rotation or reverse rotation of the motor I5, and the front-back distance of the steering wheel 1 is adjusted; the steering transmission shaft 3 is connected with a second motor 7 through a second transmission device 6, the included angle between the second transmission device 6 and the steering transmission shaft 3 is adjusted by forward rotation or reverse rotation of the second motor 7, the steering wheel 1 is driven to move up and down, and the height of the steering wheel 1 is adjusted.
The transmission device I4 comprises a connecting rod 41 in transmission connection with an output shaft of the motor I5, a universal coupling 42 is arranged at the tail end of the connecting rod 41, and the universal coupling 42 is in transmission connection with the bottom of the telescopic rod; a first screw rod 31 connected with the universal coupling 42 is arranged inside the telescopic rod, the thread at the upper end of the first screw rod 31 is connected with the internal thread support 32, and the upper end of the internal thread support 32 is connected with the bottom of the steering wheel 1; the first motor 5 is a power source of the device and drives the connecting rod 41 to rotate, the universal coupling 42 is used for transmitting motion, the first screw rod 31 and the connecting rod 41 rotate synchronously, the thread at the upper end of the first screw rod 31 is connected with the internal thread support 32, and when the first screw rod 31 rotates forwards and backwards, the internal thread support 32 reciprocates to drive the steering wheel 1 to stretch.
The second transmission device 6 is arranged in parallel with the first transmission device 4, and the second motor 7 is fixed at the bottom of the first transmission device 4 through a fastening piece; the second transmission device 6 comprises a second screw rod 61 in transmission connection with the second motor 7 and an internal thread sleeve 62 connected with the second screw rod 61 and located on one side of the second motor 7, a connecting piece 63 is fixedly connected to the bottom of the first transmission device 4, and after the second screw rod 61 penetrates through the connecting piece 63, threads at the front end of the second screw rod 61 are connected with the internal thread sleeve 62; the tail end of the internal thread sleeve 62 is hinged with a steering wheel bottom support 33 through a hinge 64, and the steering wheel bottom support 33 is fixedly connected with the bottom of the steering transmission shaft 3; when the second motor 7 rotates forwards and backwards, the second screw rod 61 is driven to rotate forwards and backwards, the internal thread sleeve 62 reciprocates, the internal thread sleeve 62 is connected with the steering wheel bottom support 33 through the hinge 64, and when the internal thread sleeve 62 reciprocates, the steering wheel 1 is driven to adjust the angle.
The forward rotation or the reverse rotation of the first motor 5 and the second motor 7 is operated according to a control signal sent by a controller; the controller comprises a single chip microcomputer, and a key circuit, a motor driving circuit, a signal acquisition circuit, a power supply voltage stabilizing circuit and an interface circuit which are connected with the single chip microcomputer. The interface circuit comprises a power interface connected with an automobile battery, a motor interface connected with two motors and a sensor interface connected with a Hall sensor.
The single chip microcomputer is a CSCR 4M00G53Z-R0, and pins 12 to 15 of the single chip microcomputer are connected with a key circuit; the key circuit comprises a front key and a rear key which respectively correspond to the first motor, and an upper key and a lower key which respectively correspond to the second motor.
The controller is respectively connected with the first motor and the second motor through the two motor driving circuits, a motor driving chip is arranged in each motor driving circuit, the driving circuit adopts a motor driving chip MC33926, the two motor driving chips MC33926 respectively drive the first motor and the second motor, and control in 4 directions is achieved according to signals given by the 4 keys. The operating voltage range of the MC33926 driver is 5V to 28V.
MC33926 is a smart mos monolithic half-bridge power IC designed primarily for automotive electronic throttle control. These ICs are also suitable for any low voltage dc servo motor control application within current and voltage limits. The MC33926 driver implements the over-current limiting function by internal constant off-time PWM and has output short circuit protection function. These ICs include temperature dependent current limit threshold reduction.
When a user presses a key, the single chip microcomputer sends a control signal to the corresponding motor driving chip according to the received key signal, and the driving chip controls the corresponding motor to rotate forwards or backwards according to the received signal, so that the requirement of a driver is met. When the driver reaches the required height or front and back position, the motor stops.
IN this embodiment, the signal input terminal SF pin, IN1 pin, IN2 pin, En pin, and Dis2 pin of the motor driving chip MC33926 are IN signal connection with the single chip microcomputer, and receive a signal sent by the single chip microcomputer. The signal output end comprises an OUT-1 signal output end with 12 pins to 15 pins and an OUT-2 signal output end with 27 pins to 30 pins, and the OUT-1 signal output end and the OUT-2 signal output end are respectively connected with the positive pole and the negative pole of the motor.
The power supply input end of the motor driving chip MC33926 is connected with the power supply voltage stabilizing circuit.
The motor driving chip MC33926 is provided with a feedback pin FB pin, the FB pin is connected with the single chip microcomputer, the actual current of the motor is sent to the single chip microcomputer through the FB pin, the single chip microcomputer carries out ad operation on the signal value through the received actual current signal to obtain a current value, the single chip microcomputer compares the obtained current value with a standard threshold value, and when the current value exceeds the standard threshold value, the single chip microcomputer cuts off the power supply flowing to the motor in the motor power supply voltage stabilizing circuit to protect the motor.
The single chip microcomputer is connected with a power supply voltage stabilizing circuit, the input end of the power supply voltage stabilizing circuit is connected with a power supply Vbat of an automobile, the power supply Vbat is divided into two paths after being connected, and the two paths are respectively a circuit I connected with the single chip microcomputer and a circuit II connected with a motor driving circuit.
The output end of the first circuit is connected with the power supply input end of the singlechip through a filter circuit; the filter circuit comprises a power supply Vbat, and the power supply Vbat is connected with an input end Vdd pin, a BCILC pin and a BCIL pin of the singlechip through a voltage stabilizing diode BZX84C5V6LT1, a bipolar transistor PBSS5360PAS and a plurality of filter capacitors after being input.
And the second circuit is connected with the power supply input end of the motor driving chip through a filter capacitor, a voltage stabilizing diode BZX84C5V6LT1 and an MOS (metal oxide semiconductor) tube IPD50P04P 4L-11. The other ends of the voltage stabilizing diode BZX84C5V6LT1 and the MOS tube IPD50P04P4L-11 are connected with the single chip microcomputer through a photoelectric coupler TLP 188.
And a Hall sensor for monitoring the rotating speed of the motor is arranged on the motor. The signal acquisition circuit comprises a current sampling circuit and a rotating speed acquisition circuit for monitoring the rotating speed of the motor. The rotating speed acquisition circuit comprises Hall sensors which are respectively arranged on the first motor and the second motor.
The current sampling circuit comprises a signal acquisition end and an operational amplifier circuit; the front end of the signal acquisition end is connected with power supply circuits of the first motor and the second motor, the real-time currents of the first motor and the second motor are acquired, the acquired real-time currents are amplified through the operational amplifier circuit and then are sent to a PT6 pin and a PT7 pin of the single chip microcomputer. Therefore, the signal of the motor can be directly transmitted to the single chip microcomputer, and the reaction time is shortened. When the motor has an abnormal phenomenon, the abnormal point of the motor can be found more quickly, earlier and more accurately, the single chip microcomputer can quickly respond, and the power supply of the motor is cut off; the motor is further protected.
The rotating speed acquisition circuit comprises a Hall sensor US288xE arranged at the front end of the current sampling circuit. The rotating speed obtained by monitoring the rotating speed is sent to the single chip microcomputer by the Hall sensor US288xE through the operational amplifier circuit, the rotating speed is converted into the moving distance of the steering wheel by the single chip microcomputer through internal software, and the adjusted distance of the steering wheel is memorized. (this part is the prior art, and the embodiment has not been effective to improve it, and will not be repeated here).
Claims (7)
1. A steering wheel control circuit with electrically adjustable position, comprising a steering wheel (1), characterized in that: the steering wheel (1) is connected with a first motor (5) through a first transmission device (4), and the front-back distance of the steering wheel (1) is adjusted through the forward rotation or the reverse rotation of the first motor (5); the steering wheel (1) is connected with a second motor (7) through a second transmission device (6), and the height of the steering wheel (1) is adjusted by forward rotation or reverse rotation of the second motor (7); the operation of the first motor (5) and the second motor (7) is operated by a control circuit of the controller; the controller is connected with a key circuit; the key circuit comprises a front key and a rear key which respectively correspond to the motor I (5), and an upper key and a lower key which respectively correspond to the motor II (7); the controller is respectively connected with a motor I (5) and a motor II (7) through two motor driving circuits, a motor driving chip is arranged in each motor driving circuit, each motor driving chip is provided with a feedback pin FB pin, each FB pin is connected with the controller, actual current of the motor is sent to the single chip microcomputer through the FB pin, and the single chip microcomputer obtains a current value through ad operation; the single chip microcomputer compares the obtained current value with a standard threshold value, and when the current value exceeds the standard threshold value, the single chip microcomputer cuts off a power supply of the motor to protect the power supply.
2. An electrically adjustable position steering wheel control circuit according to claim 1, wherein: the driving circuit adopts a motor driving chip MC33926, and the working voltage range of the motor driving chip MC33926 is 5V-28V.
3. An electrically adjustable position steering wheel control circuit according to any of claims 1 or 2, wherein: the controller is connected with a current sampling circuit, the current sampling circuit is connected with power supply circuits of the first motor and the second motor, the real-time currents of the first motor and the second motor are collected, the collected real-time currents are amplified through an operational amplifier circuit and then are sent to the single chip microcomputer.
4. An electrically adjustable position steering wheel control circuit according to claim 3, wherein: and a Hall sensor is arranged on the motor.
5. An electrically adjustable position steering wheel control circuit according to claim 1, wherein: the single chip microcomputer is connected with an interface circuit, and the interface circuit comprises a power supply interface connected with an automobile battery, a motor interface connected with two motors and a sensor interface connected with a Hall sensor.
6. An electrically adjustable position steering wheel control circuit according to claim 1, wherein: the single chip microcomputer is connected with a power supply voltage stabilizing circuit, the input end of the power supply voltage stabilizing circuit is connected with a power supply Vbat of an automobile, the power supply Vbat is divided into two paths after being connected, and the two paths are respectively a circuit I connected with the single chip microcomputer and a circuit II connected with a motor driving circuit.
7. An electrically adjustable position steering wheel control circuit according to claim 6, wherein: the output end of the first circuit is connected with the power supply input end of the singlechip through a filter circuit; and the second circuit is connected with the power input end of the motor driving chip and the acquisition circuit of the motor through the MOS tube circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123215604.2U CN216580680U (en) | 2021-12-21 | 2021-12-21 | Steering wheel control circuit capable of electrically adjusting position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123215604.2U CN216580680U (en) | 2021-12-21 | 2021-12-21 | Steering wheel control circuit capable of electrically adjusting position |
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| Publication Number | Publication Date |
|---|---|
| CN216580680U true CN216580680U (en) | 2022-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123215604.2U Active CN216580680U (en) | 2021-12-21 | 2021-12-21 | Steering wheel control circuit capable of electrically adjusting position |
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| Country | Link |
|---|---|
| CN (1) | CN216580680U (en) |
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2021
- 2021-12-21 CN CN202123215604.2U patent/CN216580680U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: JIANGSU TENGLONG PETROCHEMICAL MACHINERY Co.,Ltd. Assignor: HUAIYIN INSTITUTE OF TECHNOLOGY Contract record no.: X2023980047619 Denomination of utility model: A steering wheel control circuit with electrically adjustable position Granted publication date: 20220524 License type: Common License Record date: 20231121 |
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| EE01 | Entry into force of recordation of patent licensing contract |