CN215621828U - Be suitable for unmanned position perception hydrogen energy car rotational speed collection system - Google Patents
Be suitable for unmanned position perception hydrogen energy car rotational speed collection system Download PDFInfo
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- CN215621828U CN215621828U CN202120794894.1U CN202120794894U CN215621828U CN 215621828 U CN215621828 U CN 215621828U CN 202120794894 U CN202120794894 U CN 202120794894U CN 215621828 U CN215621828 U CN 215621828U
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Abstract
The utility model provides a rotating speed acquisition system of a hydrogen energy automobile suitable for unmanned driving position sensing, which comprises a left front wheel speed sensor, a right front wheel speed sensor, a left rear wheel speed sensor, a right rear wheel speed sensor, an instrument display screen, a vehicle control unit VCU, a hydrogen fuel cell system, a high-voltage distribution box, a power battery system, a motor controller and a motor, a speed reducer and a differential mechanism, wherein the left front wheel speed sensor and the right front wheel speed sensor are connected with the left rear wheel speed sensor; the VCU acquires wheel speed information and driver intention information, and the hydrogen fuel cell system and the power cell system provide energy sources for driving the whole vehicle; the high-voltage distribution box transmits high-voltage power provided by the hydrogen fuel cell system and the power cell system to the motor controller and the motor; the speed reducer and the differential mechanism transmit power to the tire through the transmission shaft, and the wheel speed sensor acquires the rotating speed information of the tire by acquiring pulse signals generated by the convex teeth.
Description
Technical Field
The utility model relates to the technical field of hydrogen energy automobiles, in particular to a system for sensing the rotating speed of a hydrogen energy automobile by being suitable for an unmanned position.
Background
The utility model provides a system scheme for acquiring wheel speed sensor signals by a VCU of a vehicle controller and a related algorithm for calculating related wheel speeds, compared with the prior art, the system scheme for acquiring the wheel speed sensor signals by the VCU of a vehicle controller and the related algorithm for calculating the related wheel speeds are provided, the cost is reduced, meanwhile, the transmission speed of vehicle speed information is higher, a high-precision wheel speed algorithm is provided, the instantaneity of rotating speed acquisition is adjustable, and the system can be used for occasions with higher requirements on vehicle speed control precision, such as constant-speed cruising, high-precision driving positions and the like.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention aims to provide a system for sensing the rotating speed of a hydrogen energy automobile at an unmanned position;
a hydrogen energy automobile rotating speed acquisition system suitable for unmanned driving position sensing comprises a left front wheel speed sensor, a right front wheel speed sensor, a left rear wheel speed sensor, a right rear wheel speed sensor, an instrument display screen, a Vehicle Control Unit (VCU), a hydrogen fuel cell system, a high-voltage distribution box, a power battery system, a motor controller, a motor, a speed reducer and a differential mechanism;
the VCU acquires wheel speed information and driver intention information and controls the vehicle to start and run;
the hydrogen fuel cell system and the power cell system provide energy sources for driving the whole vehicle.
Further, the high-voltage distribution box transmits the high-voltage power provided by the hydrogen fuel cell system and the power battery system to the motor controller and the motor.
Further, the motor controller drives the motor to provide power for running of the vehicle.
Further, the speed reducer and the differential transmit power to the tires through the propeller shaft, and finally the rotation of the tires realizes the running of the vehicle.
Further, the wheel speed sensor collects the rotational speed information of the tire by collecting a pulse signal generated through the convex teeth.
Furthermore, when one convex tooth passes through the wheel speed sensor, the wheel speed sensor generates a pulse signal, the VCU vehicle control unit collects the pulse signal and then counts, and relevant vehicle speed information is finally obtained through counting of the pulse signal and a relevant algorithm.
The technical scheme provided by the utility model has the beneficial effects that: (1) the system has simple structure, effectively reduces related information acquisition controllers, reduces cost, has high stability and reliability, has adjustable instantaneity of rotating speed acquisition, and is suitable for occasions with higher requirement on the control precision of the vehicle speed, unmanned position sensing, constant-speed cruising and the like;
(2) the system can instantaneously adjust the rotating speed acquisition according to the actual requirements of the vehicle, and acquires the rotating speed information in real time by adjusting the time base and acquiring the base difference of the corresponding time base so as to meet the requirements on the rotating speed information precision and the instantaneity under different driving conditions, thereby being more intelligent and scientific;
(3) the VCU vehicle control unit is adopted to directly acquire the rotating speed information, so that the accuracy is higher and the control is more accurate.
Drawings
FIG. 1 is a structural diagram of a system for sensing the rotating speed of a hydrogen energy automobile by using an unmanned position according to the utility model;
wherein: 11-left front wheel speed sensor, 12-right front wheel speed sensor, 13-left rear wheel speed sensor, 14-right rear wheel speed sensor, 150-instrument display screen, 250-vehicle control unit VCU, 24-hydrogen fuel cell system, 25-high voltage distribution box, 26-power battery system, 28-motor controller and motor, 29-reducer and differential;
FIG. 2 is a flow chart of a method for acquiring the rotating speed of a hydrogen energy automobile by sensing the unmanned position;
FIG. 3 is a signal sampling schematic diagram of a system for sensing the rotating speed of a hydrogen energy automobile by using an unmanned position according to the utility model.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1, the present invention provides a system for sensing the rotational speed of a hydrogen-powered vehicle at an unmanned location;
a rotating speed acquisition system suitable for an unmanned driving position to sense hydrogen energy automobile is characterized by comprising a left front wheel speed sensor, a right front wheel speed sensor, a left rear wheel speed sensor, a right rear wheel speed sensor, an instrument display screen, a vehicle control unit VCU, a hydrogen fuel cell system, a high-voltage distribution box, a power battery system, a motor controller, a motor, a speed reducer and a differential mechanism;
the VCU acquires wheel speed information and driver intention information and controls the vehicle to start and run;
the hydrogen fuel cell system and the power cell system provide energy sources for driving the whole vehicle;
the high-voltage distribution box transmits high-voltage power provided by the hydrogen fuel cell system and the power cell system to the motor controller and the motor;
the motor controller drives the motor to provide power for the vehicle to run;
the speed reducer and the differential mechanism transmit power to the tires through the transmission shaft, and finally the rotation of the tires realizes the running of the vehicle;
the wheel speed sensor collects the rotating speed information of the tire by collecting the pulse signals generated by the convex teeth.
Referring to fig. 2, a method for collecting the rotating speed of a hydrogen energy vehicle suitable for unmanned position sensing is applied to the system for collecting the rotating speed of the hydrogen energy vehicle suitable for unmanned position sensing, and includes the following steps:
s1, the driver starts the vehicle by electrifying;
s2, the VCU of the vehicle control unit collects the pulse signal information of the wheel speed sensor;
s3, importing vehicle state matching information including the number N of convex teeth of a circle of the vehicle tire and the circumference L of the circle of the vehicle tire into the VCU vehicle controller;
s4, the VCU selects a driving mode according to the driving intention of the vehicle, and different driving modes correspond to different time base numbers of the counter and the counting difference of each time base number;
s5, substituting the counter time base numbers and the count differences corresponding to different driving modes into an algorithm to obtain the real-time vehicle speed V under different driving modes, wherein V is 3.6 ni/N*L*ti；niRepresents the count difference, t, of the base number per time period corresponding to the ith driving modeiRepresenting the time base of a counter corresponding to the ith driving mode;
and S6, sending the real-time vehicle speed V in different modes.
The driving modes comprise a mode I, a mode II and a mode III;
when the vehicle is in the mode one, the time base of the design counter is t1The VCU calculates the counting difference n of each time base in real time1；
When the vehicle is in the second mode, the time base of the design counter is t2The VCU calculates the counting difference n of each time base in real time2；
When the vehicle is in the third mode, the time base of the design counter is t3The VCU calculates the counting difference n of each time base in real time3；
The mode one, the mode two and the mode three can coexist, the priority of the mode one is highest, and the mode one always exists regardless of any mode.
Referring to fig. 3, when a tooth passes through the wheel speed sensor, the wheel speed sensor generates a pulse signal, the VCU controller collects the pulse signal and then counts the pulse signal, and finally obtains the related vehicle speed information through counting the pulse signal and a related algorithm.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A rotating speed acquisition system suitable for an unmanned driving position to sense hydrogen energy automobile is characterized by comprising a left front wheel speed sensor, a right front wheel speed sensor, a left rear wheel speed sensor, a right rear wheel speed sensor, an instrument display screen, a vehicle control unit VCU, a hydrogen fuel cell system, a high-voltage distribution box, a power battery system, a motor controller, a motor, a speed reducer and a differential mechanism;
the VCU acquires wheel speed information and driver intention information and controls the vehicle to start and run;
the hydrogen fuel cell system and the power cell system provide energy sources for driving the whole vehicle.
2. The system for acquiring the rotating speed of the hydrogen energy automobile suitable for unmanned position sensing according to claim 1, wherein the high-voltage distribution box transmits the high-voltage power provided by the hydrogen fuel cell system and the power cell system to the motor controller and the motor.
3. The system for acquiring the rotating speed of the hydrogen energy automobile suitable for unmanned position sensing according to claim 1, wherein the motor controller drives the motor to provide power for driving the automobile.
4. The system for acquiring the rotating speed of the hydrogen energy automobile suitable for unmanned position sensing according to claim 1, wherein the speed reducer and the differential transmit power to the tires through a transmission shaft, and finally the rotation of the tires realizes the running of the automobile.
5. The system for acquiring the rotating speed of the hydrogen-powered vehicle suitable for unmanned position sensing as claimed in claim 1, wherein the wheel speed sensor acquires the rotating speed information of the tire by acquiring a pulse signal generated by the convex teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120794894.1U CN215621828U (en) | 2021-04-19 | 2021-04-19 | Be suitable for unmanned position perception hydrogen energy car rotational speed collection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120794894.1U CN215621828U (en) | 2021-04-19 | 2021-04-19 | Be suitable for unmanned position perception hydrogen energy car rotational speed collection system |
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| Publication Number | Publication Date |
|---|---|
| CN215621828U true CN215621828U (en) | 2022-01-25 |
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| CN202120794894.1U Active CN215621828U (en) | 2021-04-19 | 2021-04-19 | Be suitable for unmanned position perception hydrogen energy car rotational speed collection system |
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| CN (1) | CN215621828U (en) |
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2021
- 2021-04-19 CN CN202120794894.1U patent/CN215621828U/en active Active
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