CN210154812U - Follow-up steering analog control device for automobile - Google Patents
Follow-up steering analog control device for automobile Download PDFInfo
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- CN210154812U CN210154812U CN201921210874.4U CN201921210874U CN210154812U CN 210154812 U CN210154812 U CN 210154812U CN 201921210874 U CN201921210874 U CN 201921210874U CN 210154812 U CN210154812 U CN 210154812U
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Abstract
The utility model particularly relates to an automobile follow-up steering analog control device with simple structure and convenient use, the analog control device comprises a single chip microcomputer, and a signal input port of the single chip microcomputer is respectively connected with signal input ends of an angular displacement sensor, an inclination angle sensor, a vehicle speed increasing button and a vehicle speed reducing button; the signal output end of the single chip microcomputer is respectively connected with control lines of the horizontal follow-up steering engine and the vertical follow-up steering engine, and the signal output end of the single chip microcomputer is also connected with the OLED display module; compared with the existing adaptive headlamp system, the adaptive headlamp system is simple in structure and convenient to use, does not need a complex bench system, and is convenient for parameter calibration during early design of an automobile.
Description
Technical Field
The utility model relates to an automobile test rack field, in particular to car follow-up turns to analog control device.
Background
The follow-up steering headlamp is also called as an adaptive lighting System (AFS) and is an adaptive front lighting System (AFS) in english, and the follow-up steering headlamp can automatically adjust the deflection of the headlamp according to the driving speed, the steering angle and the like so as to illuminate a steering area in advance and provide all-directional safety lighting to ensure that a driver has the best visibility at any moment, thereby enhancing the driving safety in the dark. The common headlamps have a fixed irradiation range, and when the automobile turns on a curve at night, because the illumination angle cannot be adjusted, a blind area often appears on the inner side of the curve, and the safe driving of a driver at night is greatly threatened.
The core technology of the follow-up steering system is a parameter calibration and control strategy, namely, parameters such as steering wheel rotation angle, vehicle speed, vehicle body inclination angle and the like are measured and calibrated, and then the rotation angle of a headlamp driving steering engine is controlled according to a calibration result; when designing a new car, often there is not ready-made parameter, therefore in order to make things convenient for new car design in earlier stage, need one set of system that can carry out the simulation to headlight follow-up turns to, and the structure of simulation system should be as simple as possible, convenient to use to satisfy the quick design in earlier stage of car.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, the present invention is to provide a car follow-up steering simulation control device with simple structure and convenient use.
In order to realize the purpose of the utility model, the utility model adopts the technical proposal that: the automobile follow-up steering analog control device comprises a single chip microcomputer, wherein a signal input port of the single chip microcomputer is respectively connected with signal input ends of an angular displacement sensor, an inclination angle sensor, a vehicle speed increasing button and a vehicle speed reducing button; the signal output end of the single chip microcomputer is respectively connected with control lines of the horizontal follow-up steering engine and the vertical follow-up steering engine, and the signal output end of the single chip microcomputer is also connected with the OLED display module;
the horizontal follow-up steering engine is horizontally arranged on a rectangular bracket, an inclination angle sensor is adhered on the bracket, a horizontal rotating shaft is arranged on the lower bottom surface of the bracket, bearings are arranged at two ends of the rotating shaft, the bearings are arranged on a rack provided with bearing seats, so that the bracket can rotate relative to the rack along the axis of the horizontal rotating shaft, an output shaft of the horizontal follow-up steering engine is connected with a shell of the vertical follow-up steering engine, the rotating shaft of the vertical follow-up steering engine is vertical to the rotating shaft of the horizontal follow-up steering engine, and an automobile headlamp is sleeved on the output shaft of the vertical follow-; the angular displacement sensor is arranged on a steering wheel, and the steering wheel is fixed on the rack or is independently arranged;
the control device further comprises a storage battery, the storage battery is a 12V or 24V storage battery, the storage battery is connected with the voltage reduction module, the voltage reduction module reduces the voltage of an input power supply of 12V or 24V to 5V, and then the voltage is fixedly output to the single chip microcomputer, the angular displacement sensor, the inclination angle sensor, the vehicle speed increasing button and the vehicle speed reducing button to work, and a power line of the storage battery is further connected with power lines of the horizontal follow-up steering engine, the vertical follow-up steering engine and the automobile headlamp respectively.
Preferably, the model of the single chip microcomputer is S9KEAZ128AMLK, the S9KEAZ128AMLK single chip microcomputer comprises an S9KEAZ128AMLK single chip microcomputer control chip, and an OLED interface, a Bluetooth interface, a reset module and a clock module are packaged on the chip; the C3 pin in the S9KEAZ128AMLK is sequentially connected with an A/D converter and an angular displacement sensor; the pin H0 is connected with a control line of a horizontal follow-up steering engine, the pin H1 is connected with a control line of a vertical follow-up steering engine, and the pin H3 and the pin H4 are connected with the output end of the inclination angle sensor through an I2C bus; the pin D0 is connected with a vehicle speed increasing button, the pin D1 is connected with a vehicle speed decreasing button, and the pins F2, F3, A6, A7 and C7 are connected with an OLED display module;
the type of the tilt sensor is MPU6050, and the type of the angular displacement sensor is WDD35D 4; the model of the voltage reduction module is LM2596, the speed increasing button and the speed reducing button are respectively a slide rheostat, the slide rheostat is powered by the voltage reduction module, two ends of the slide rheostat are connected in parallel with a lead connected with an A/D converter, and the two A/D converters are respectively connected with a D0 pin or a D1 pin of the single chip microcomputer; the slide rheostat model is B102 single-circle carbon film knob type slide rheostat.
The utility model discloses following beneficial effect has: the device can realize the simulation process of the following functions:
(1) displaying: through the OLED display, the steering wheel angle, the vehicle body inclination angle and the vehicle speed can be displayed in real time.
(2) And adjusting the left and right steering of the headlamp according to the corner signal acquired by the angular displacement sensor and the vehicle speed signal simulated by the vehicle speed increasing button (13) and the vehicle speed reducing button (14), so as to compensate the visual field blind area.
(3) Compensation slope field of view range: when the automobile runs up and down a slope, the automobile body has a certain pitching inclination angle, so that the illumination range of the automobile headlamp is narrowed, and at the moment, the headlamp position adjusting system adjusts the up-down illumination angle of the headlamp according to the change of the slope inclination angle, compensates the illumination range and enlarges the visual field of a driver.
Compared with the existing adaptive headlamp system, the adaptive headlamp system is simple in structure and convenient to use, does not need a complex bench system, and is convenient for parameter calibration during early design of an automobile.
Drawings
FIG. 1 is a pin connection diagram of an S9KEAZ128AMLK single chip microcomputer;
FIG. 2 is a pin connection diagram of an OLED module;
FIG. 3 is a pin connection diagram of an MPU6050 tilt sensor;
FIG. 4 is a pin connection diagram of an angular displacement sensor;
FIG. 5 is a vehicle speed increase button circuit diagram;
FIG. 6 is a schematic circuit diagram of an analog control device;
FIG. 7 is a wiring diagram of the single chip microcomputer, the motor driver and the motor;
fig. 8 is an installation schematic diagram of a horizontal follow-up steering engine and a vertical follow-up steering engine.
Detailed Description
The automobile follow-up steering analog control device shown in fig. 1-8 comprises a single chip microcomputer 1, wherein a signal input port of the single chip microcomputer 1 is respectively connected with signal input ends of an angular displacement sensor 11, an inclination angle sensor 12, a vehicle speed increasing button 13 and a vehicle speed reducing button 14; the signal output end of the single chip microcomputer 1 is respectively connected with control lines of a horizontal follow-up steering engine 15 and a vertical follow-up steering engine 16, and the signal output end of the single chip microcomputer 1 is also connected with an OLED display module 17;
the horizontal follow-up steering engine 15 is horizontally arranged on a cuboid-shaped support 31, an inclination angle sensor 12 is adhered to the support 31, a horizontal rotating shaft 32 is arranged on the lower bottom surface of the support, bearings are arranged at two ends of the rotating shaft 32 and are arranged on a rack 33 provided with bearing seats, so that the support 31 can rotate relative to the rack 33 along the axis of the horizontal rotating shaft 32, an output shaft of the horizontal follow-up steering engine 15 is connected with a shell of the vertical follow-up steering engine 16, the rotating shaft of the vertical follow-up steering engine 16 is vertical to the rotating shaft of the horizontal follow-up steering engine 15, and an automobile headlamp is sleeved on the output shaft of the vertical follow-; the angular displacement sensor 11 is arranged on a steering wheel, and the steering wheel is fixed on a rack or is independently arranged;
the control device also comprises a storage battery 18, the storage battery 18 is a 12V or 24V storage battery, the storage battery 18 is connected with a voltage reduction module 20, the voltage reduction module 20 reduces the voltage of an input power supply of 12V or 24V to 5V, or a 12V or 24V power adapter is used, one end of the adapter is connected with a household alternating current socket, and the other end of the adapter is connected with the voltage reduction module 20; the voltage reduction module 20 is then fixedly output to the single chip microcomputer 1, the angular displacement sensor 11, the inclination angle sensor 12, the vehicle speed increasing button 13 and the vehicle speed reducing button 14 to work, and power lines of the storage battery 18 are also respectively connected with power lines of the horizontal follow-up steering engine 15, the vertical follow-up steering engine 16 and the automobile headlamp 17.
The model of the single chip microcomputer 1 is S9KEAZ128AMLK, the S9KEAZ128AMLK single chip microcomputer comprises an S9KEAZ128AMLK single chip microcomputer control chip, and an OLED interface, a Bluetooth interface, a reset module and a clock module are packaged on the chip; the function of part of pins of the 9KEAZ128AMLK singlechip is given in table 1, and a C3 pin in the S9KEAZ128AMLK is sequentially connected with an A/D converter 19 and an angular displacement sensor 11; the pin H0 is connected with a control line of a horizontal follow-up steering engine 15, the pin H1 is connected with a control line of a vertical follow-up steering engine 16, and the pin H3 and the pin H4 are connected with the output end of the tilt angle sensor 12 through an I2C bus; the pin D0 is connected with a vehicle speed increasing button 13, the pin D1 is connected with a vehicle speed decreasing button 14, and the pins F2, F3, A6, A7 and C7 are connected with an OLED display module 17:
TABLE 1S 9KEAZ128AMLK SCM partial pin table
| Pin | Connecting part |
| D0、D1 | Connecting key module |
| H3、H4 | Inclination sensor module |
| F2、F3、A6、A7、C7 | OLED display module |
| C3 | Corner sensor module |
| H0、H1 | Execution module |
The pins of the OLED display module 17 are shown in fig. 2, and their corresponding pins function as follows:
1 VCC: 5V power connection
2 GND: power ground
3 RST: reduction of position
4 DO: a clock pin; d1: data pin
5 CS: chip select, active low, if not wanted having to be grounded
6 DC: data/command select, ICC interface used to set ICC address
The type of the tilt sensor 12 is MPU6050, the output of the tilt sensor is digital signals which can be directly connected with the singlechip 1, and the type of the angular displacement sensor 11 is WDD35D 4; the WDD35D4 angular displacement sensor can be placed in an inverted manner or fixedly placed on a rack, and can be connected with a steering shaft of a steering wheel through a coupler of the angular displacement sensor to detect the change of the steering wheel angle input, so that the measurement requirement is met.
The model of the voltage reducing module 20 is LM2596, the speed increasing button 13 and the speed reducing button 14 are respectively a slide rheostat, the slide rheostat is powered by the voltage reducing module 20, two ends of the slide rheostat are connected with a lead in parallel and connected with an A/D converter 19, and the two A/D converters 19 are respectively connected with a D0 pin or a D1 pin of the single chip microcomputer 1; the slide rheostat model is B102 single-circle carbon film knob type slide rheostat.
The models of the horizontal follow-up steering engine 15 and the vertical follow-up steering engine 16 are MG996R steering engines, the MG996R steering engines are controlled by three control lines to operate, wherein a red line is a power line, a brown line is a ground line, and a yellow line is a control line, the power line and the ground line are used for providing energy required by a direct current motor and a control circuit in the steering engines, the power line and the ground line are connected with the storage battery 18 or a power adapter, a drive chip control line of the horizontal follow-up steering engine 15 is connected with an H0 pin of the single chip microcomputer, and a drive chip control line of the vertical follow-up steering engine 16 is connected with an H1.
The simulation control device is a simplified self-adaptive AFS control system, a steering wheel is manually rotated, an angular displacement sensor acquires steering wheel rotation angle signals, a manual rotating bracket 31 simulates the inclination of a vehicle body when the vehicle turns, an inclination angle sensor acquires vehicle body inclination angle signals, a vehicle speed increasing button 13 or a vehicle speed reducing button 14 inputs signals to simulate the acceleration or deceleration of the vehicle speed, the signals are sent to a single chip microcomputer 1 to be processed, the single chip microcomputer regulates the position of a vehicle headlamp according to a value preset by a program and the acquired input signals, and the headlamp rotation angle is obtained; after the car headlight circular telegram, it is suitable when can coming the parameter setting in the reverse judgement control procedure according to its light irradiation scope to corresponding modification, this scheme is compared in present self-adaptation headlight simple structure and convenient to use of system, and the rack system that does not complicate carries out the parameter calibration when being convenient for the car design in earlier stage and uses, can realize the simulation process of following function:
(1) displaying: through the OLED display, the steering wheel angle, the vehicle body inclination angle and the vehicle speed can be displayed in real time.
(2) And adjusting the left and right steering of the headlamp according to the corner signals acquired by the angular displacement sensor and the vehicle speed signals simulated by the vehicle speed increasing button 13 and the vehicle speed reducing button 14 at the moment, so as to compensate the visual field blind area.
(3) Compensation slope field of view range: when the automobile runs up and down a slope, the automobile body has a certain pitching inclination angle, so that the illumination range of the automobile headlamp is narrowed, and at the moment, the headlamp position adjusting system adjusts the up-down illumination angle of the headlamp according to the change of the slope inclination angle, compensates the illumination range and enlarges the visual field of a driver.
The control process of the analog control device is as follows: c7 controls the chip selection function of the OLED, A6 resets the OLED at low level, A7 controls the OLED data and commands; the single chip microcomputer 1 receives steering wheel rotation angle and vehicle speed signals through C3, D0 and D1 interfaces, and controls the horizontal follow-up steering engine to operate through an H0 serial port after control processing; the tilt angle signals are received by H3 and H4, and H1 controls the operation of a vertical follow-up motor to realize the adjustment of the up-down rotation and the left-right rotation of the headlamp.
As shown in fig. 7, the main process of the analog control device is as follows: after the system is initialized, starting to call a display subprogram for displaying; then, calling a key subprogram to acquire vehicle speed data; then judging whether the timing of the timer is finished for 100ms, and if so, timing the mark position 0; calling an AD conversion subprogram, acquiring an AD conversion value, and calculating a steering wheel corner through the AD conversion value; and acquiring data of the tilt angle sensor to calculate the front and back pitch tilt angles of the vehicle body, calculating a PWM duty ratio, and outputting PWM pulse control signals to drive a horizontal follow-up steering engine 15 and a vertical follow-up steering engine 16 so as to adjust the position of the headlamp.
Claims (2)
1. Automobile follow-up turns to analog control device, its characterized in that: the analog control device comprises a single chip microcomputer (1), wherein a signal input port of the single chip microcomputer (1) is respectively connected with signal input ends of an angular displacement sensor (11), an inclination angle sensor (12), a vehicle speed increasing button (13) and a vehicle speed reducing button (14); the signal output end of the single chip microcomputer (1) is respectively connected with control lines of a horizontal follow-up steering engine (15) and a vertical follow-up steering engine (16), and the signal output end of the single chip microcomputer (1) is also connected with an OLED display module (17);
the horizontal follow-up steering engine (15) is horizontally arranged on a rectangular bracket (31), an inclination angle sensor (12) is adhered to the bracket (31), a horizontal rotating shaft (32) is arranged on the lower bottom surface of the bracket, bearings are arranged at two ends of the rotating shaft (32), and are arranged on a rack (33) provided with a bearing seat, so that the bracket (31) can rotate along the axis of the horizontal rotating shaft (32) relative to the rack (33), the output shaft of the horizontal follow-up steering engine (15) is connected with the shell of the vertical follow-up steering engine (16), the rotating shaft of the vertical follow-up steering engine (16) is vertical to the rotating shaft of the horizontal follow-up steering engine (15), and headlights of an automobile are sleeved on the output shaft of the vertical follow-up steering engine (16); the angular displacement sensor (11) is arranged on a steering wheel, and the steering wheel is fixed on the rack or is independently arranged;
the control device further comprises a storage battery (18), the storage battery (18) is a 12V or 24V storage battery, the storage battery (18) is connected with a voltage reduction module (20), the voltage reduction module (20) reduces the voltage of an input power supply of 12V or 24V to 5V, the voltage is then fixedly output to the single chip microcomputer (1), the angular displacement sensor (11), the inclination angle sensor (12), the vehicle speed increasing button (13) and the vehicle speed reducing button (14) to work, and a power line of the storage battery (18) is further connected with a power line of a horizontal follow-up steering engine (15), a vertical follow-up steering engine (16) and a vehicle headlamp respectively.
2. The automotive follow-up steering simulation control device according to claim 1, characterized in that: the single chip microcomputer (1) is S9KEAZ128AMLK, the S9KEAZ128AMLK single chip microcomputer comprises an S9KEAZ128AMLK single chip microcomputer control chip, and an OLED interface, a Bluetooth interface, a reset module and a clock module are packaged on the chip; c3 pin in S9KEAZ128AMLK is connected with an A/D converter (19) and an angular displacement sensor (11) in sequence, H0 pin is connected with a control line of a horizontal follow-up steering engine (15), H1 pin is connected with a control line of a vertical follow-up steering engine (16), and H3 pin and H4 pin are connected with an output end of an inclination angle sensor (12) through an I2C bus; the pin D0 is connected with a vehicle speed increasing button (13), the pin D1 is connected with a vehicle speed reducing button (14), and the pins F2, F3, A6, A7 and C7 are connected with an OLED display module (17);
the type of the tilt angle sensor (12) is MPU6050, and the type of the angular displacement sensor (11) is WDD35D 4; the model of the voltage reduction module (20) is LM2596, the vehicle speed increasing button (13) and the vehicle speed reducing button (14) are respectively a sliding rheostat, the sliding rheostat is powered by the voltage reduction module (20), two ends of the sliding rheostat are connected with a lead in parallel and connected with an A/D converter (19), and the two A/D converters (19) are respectively connected with a D0 pin or a D1 pin of the single chip microcomputer (1); the slide rheostat model is B102 single-circle carbon film knob type slide rheostat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921210874.4U CN210154812U (en) | 2019-07-30 | 2019-07-30 | Follow-up steering analog control device for automobile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921210874.4U CN210154812U (en) | 2019-07-30 | 2019-07-30 | Follow-up steering analog control device for automobile |
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| Publication Number | Publication Date |
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| CN210154812U true CN210154812U (en) | 2020-03-17 |
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| CN201921210874.4U Expired - Fee Related CN210154812U (en) | 2019-07-30 | 2019-07-30 | Follow-up steering analog control device for automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113954737A (en) * | 2021-09-27 | 2022-01-21 | 广西玉柴新能源汽车有限公司 | Automobile headlamp position adjusting system |
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2019
- 2019-07-30 CN CN201921210874.4U patent/CN210154812U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113954737A (en) * | 2021-09-27 | 2022-01-21 | 广西玉柴新能源汽车有限公司 | Automobile headlamp position adjusting system |
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Granted publication date: 20200317 Termination date: 20200730 |