CN204452203U - The computing system of vehicle body course angle in a kind of automatic parking process - Google Patents
The computing system of vehicle body course angle in a kind of automatic parking process Download PDFInfo
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- CN204452203U CN204452203U CN201520058731.1U CN201520058731U CN204452203U CN 204452203 U CN204452203 U CN 204452203U CN 201520058731 U CN201520058731 U CN 201520058731U CN 204452203 U CN204452203 U CN 204452203U
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- vehicle body
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- chip microprocessor
- microprocessor mcu
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Abstract
The utility model provides the computing system of vehicle body course angle in a kind of automatic parking process, comprises sensor assembly, data processing module, single-chip microprocessor MCU, power module and read-out; Power module is all connected with sensor assembly, data processing module, single-chip microprocessor MCU respectively, for providing power supply for other each modules; Sensor assembly is connected with data processing module, for Information Monitoring, and send range information to data processing module, data processing module connects single-chip microprocessor MCU, for the treatment of the information of sensor die block transfer, and effective information sends single-chip microprocessor MCU to the most at last; Single-chip microprocessor MCU calculates the real-time vehicle body course angle of automobile, and exports read-out to.This calculation processes is succinct, real-time, effectively can improve the accuracy of detection of vehicle body course angle, chaufeur effectively can be helped to understand current body gesture situation, park to be better beneficial to, and improves effect of parking.
Description
Technical field
The utility model relates to automatic parking technical field, particularly relates to the computing system of vehicle body course angle in a kind of automatic parking process.
Background technology
Along with the continuous increase of automobile pollution, a difficult problem of parking more and more is subject to people and pays close attention to, and the appearance of automated parking system solves the difficult problem of parking day by day perplexing car owner.The detection of vehicle body course angle is an important step of automated parking system, intelligent algorithm in automated parking system is all formulated according to automobile course angle, and the path planning of existing automated parking system all angle, assumed vehicle initial heading be 0 °, the operating range of each step in parking path is formulated with this, when making automobile finally VEHICLES MUST PARK WITHIN THE MARKED BAY, vehicle body parallel is in parking stall line, but under actual traffic situation, due to pilot control, actual road conditions and other can not estimate factor angle, vehicle body initial heading all may be caused not to be 0 °, now will produce considerable influence to actual effect of parking.Accurate vehicle body course angle calculating not only contributes to chaufeur and understands current body gesture situation in real time, can also provide vehicle body course angle accurately, improve effect of parking for the adjusting stage in the storehouse of automated parking system path planning.
In existing automated parking system, body gesture method of inspection is rely on ultrasonic fault detection technology and machine vision technique mostly, and wherein the application of machine vision technique is more extensive.The application of ultrasonic detector installs 2 ~ 4 ultrasonic transduter detections and rear car distance at automobile tail, whether identically body gesture is judged by the detection range of monitoring the detection of several ultrasonic transduter, but ultrasonic detector also exists some shortcomings in application, especially hypracoustic scattering, reflection problems are relatively more serious, there is the phenomenon not receiving echo at the fillet place, front and back end of automobile; The application of machine vision technique mates parking stall line by built-in algorithms in conjunction with the camera of automobile tail, adjust body gesture, but the method is only applicable to vertically park with this.
Utility model content
For Shortcomings in prior art, the utility model provides the computing system of vehicle body course angle in a kind of automatic parking process, chaufeur is helped to understand current body gesture situation in real time, adjusting stage for automated parking system path planning provides vehicle body course angle accurately, improves effect of parking.
The utility model realizes above-mentioned technical purpose by following technological means.
A computing system for vehicle body course angle in automatic parking process, comprises sensor assembly, data processing module, single-chip microprocessor MCU, power module and read-out;
Described power module is all connected with sensor assembly, data processing module, single-chip microprocessor MCU respectively, for providing power supply for sensor assembly, data processing module and one-chip computer module;
Described sensor assembly comprises ultrasonic transduter, wheel speed sensors and steering wheel angle sensor, is connected with data processing module, and described ultrasonic transduter is for gathering the range information parked cars in automobile and parking stall, side; Described wheel speed sensors is for gathering the wheel speed impulse singla of wheel; Described steering wheel angle sensor is for gathering the steering wheel angle information of automobile;
Described data processing module connects single-chip microprocessor MCU, for the information that receiving sensor module transmits, realize conversion ultrasonic transduter institute being gathered to the screening of range information, the adding up of wheel speed sensors institute collection wheel speed impulse singla, steering wheel angle information that steering wheel angle sensor gathers, and effective information sends single-chip microprocessor MCU to the most at last;
Described single-chip microprocessor MCU connects read-out, for accepting the effective information that data processing module transmits, calculating the real-time vehicle body course angle of automobile, and exporting read-out to.
Further, described ultrasonic transduter is four, and vehicle body both sides are respectively distributed with two; Described wheel speed sensors is two, and is arranged on main reduction gear; Described steering wheel angle sensor is one, and is arranged in the Steering gear below bearing circle.
Further, described two ultrasonic transduters being distributed in vehicle body homonymy are spaced and arrange highly identical.
Further, described single-chip microprocessor MCU adopts the Strong MCU XC866 of company of Infineon.
The beneficial effects of the utility model are:
(1) the utility model is by equipment such as sensor assembly, data processing module, single-chip microprocessor MCU, power module and read-outs, achieve the real-time calculating of vehicle body course angle in automatic parking process, this calculation processes is succinct, real-time, effectively can improve the accuracy of detection of vehicle body course angle, chaufeur effectively can be helped to understand current body gesture situation, park to be better beneficial to, improve effect of parking.
(2) equipment of the utility model use is simple, and cost is low, and stability is high, highly versatile, can widely use on automobile.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the computing system of vehicle body course angle in automatic parking process described in the utility model.
Fig. 2 is the ultrasound senor position schematic diagram of vehicle body homonymy.
Fig. 3 is for seeking storehouse process ultrasonic transduter information acquisition schematic diagram.
Fig. 4 is the relation schematic diagram at wheel steering angle and change angle, vehicle body course in the process of falling storehouse.
Detailed description of the invention
Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described, but protection domain of the present utility model is not limited to this.
As shown in Figure 1, in automatic parking process described in the utility model, the computing system of vehicle body course angle, comprises sensor assembly, data processing module, single-chip microprocessor MCU, power module and read-out; Described sensor assembly connection data processing module, described data processing module connects single-chip microprocessor MCU, and described single-chip microprocessor MCU connects read-out; Described power module is all connected with sensor assembly, data processing module, single-chip microprocessor MCU;
Described power module provides power supply for whole system; Described sensor assembly comprises four ultrasonic transduters, a steering wheel angle sensor and two wheel speed sensors; Described ultrasonic transduter is respectively used to gather the range information parked cars in automobile and parking stall, side, and send the range information collected to data processing module, as shown in Figure 2, ultrasonic transduter is respectively distributed with two in vehicle body both sides, and the ultrasonic transduter A of vehicle body homonymy is with ultrasonic transduter B standoff distance S and layout is highly identical.Described two wheel speed sensors are arranged on main reduction gear, gather the wheel speed impulse singla of left rear wheel and off hind wheel respectively, and send the impulse singla collected to data processing module; Described steering wheel angle sensor is arranged in the Steering gear below bearing circle, for gathering steering wheel angle signal and sending the steering wheel angle information collected to data processing module; The information that described data processing module receiving sensor module transmits, and classification processes it, wherein, the range information of ultrasonic transduter collection is screened, the wheel speed impulse singla of wheel speed sensors collection is added up, the steering wheel angle information of steering wheel angle sensor collection is changed, and effective information sends single-chip microprocessor MCU to the most at last; Single-chip microprocessor MCU receives the effective information that data processing module transmits, and calculates the real-time vehicle body course angle of automobile, and exports read-out to; Described read-out shows instantaneous vehicle body course angle.Wherein, single-chip microprocessor MCU adopts the Strong MCU XC866 of company of Infineon.
For convenience of the method for calculating describing vehicle body course angle in automatic parking process, with car right side parking for embodiment is described.
(1) seek the storehouse stage, start power supply, automobile starts to seek storehouse, as shown in Figure 3, is positioned at the range information (a that vehicle body homonymy ultrasonic transduter A and ultrasonic transduter B online acquisition automobile and parking stall, side have parked cars in sensor assembly
x, b
x), and this range information is passed to data processing module; Data processing module screens collected range information, if | a
x-b
x|>=1m, then delete this group numerical value; Data processing module is by the effective information (a after screening
i, b
i) pass to single-chip microprocessor MCU; Single-chip microprocessor MCU obtains the vehicle body course angle of seeking in the process of storehouse after calculating
and export on a display screen.Vehicle body course angle
computation process for: obtain distance parameter (av, bv) after single-chip microprocessor MCU being received range information (ai, the bi) calculating mean value that data processing module transmits, namely
then seek the vehicle body course angle in the process of storehouse
wherein S is the standoff distance of two ultrasonic transduters for vehicle body homonymy.
(2) stage of falling storehouse, wheel speed sensors gathers the wheel speed impulse singla of left rear wheel and off hind wheel, and steering wheel angle sensor gathers steering wheel angle signal; The wheel speed impulse singla of data processing module to wheel speed sensors collection adds up, and changes, and information is passed to single-chip microprocessor MCU to the steering wheel angle information of steering wheel angle sensor collection; Single-chip microprocessor MCU obtains the change angle, vehicle body course in the process of falling storehouse after calculating
Vehicle body course angle
computation process is: as shown in Figure 4, if the change of vehicle backing storehouse stage per interval t automobile course angle
automobile sport distance is l, the bearing circle that data processing module utilizes the intrinsic turning rate K of automobile to be measured by steering wheel angle sensor
Rotational angle theta
jbe converted to wheel steering angle φ
j, namely do as down conversion:
wherein bearing circle is turned right and is designated as positive-angle, turns left to be designated as negative angle; From Ackerman steering principle
wherein L is vehicle wheel base, and R is Turning radius, can draw the Turning radius of t thus
vehicle body course angle change in the t time can be obtained in conjunction with arc length formula
then vehicle body course angle
(3) storehouse stage and the stage of falling storehouse vehicle body course angle are sought in combination
with
the vehicle body course angle in automatic parking process can be drawn
and by its output display on a display screen.
The whole computation process process of the utility model is succinct, effectively can improve the accuracy of detection of vehicle body course angle, can effectively help chaufeur to understand current body gesture situation, the equipment used is simple, and cost is low, and stability is high, highly versatile, can widely use on automobile.
Described embodiment is preferred embodiment of the present utility model; but the utility model is not limited to above-mentioned embodiment; when not deviating from flesh and blood of the present utility model, any apparent improvement that those skilled in the art can make, replacement or modification all belong to protection domain of the present utility model.
Claims (4)
1. the computing system of vehicle body course angle in automatic parking process, is characterized in that, comprise sensor assembly, data processing module, single-chip microprocessor MCU, power module and read-out;
Described power module is all connected with sensor assembly, data processing module, single-chip microprocessor MCU respectively, for providing power supply for sensor assembly, data processing module and one-chip computer module;
Described sensor assembly comprises ultrasonic transduter, wheel speed sensors and steering wheel angle sensor, is connected with data processing module, and described ultrasonic transduter is for gathering the range information parked cars in automobile and parking stall, side; Described wheel speed sensors is for gathering the wheel speed impulse singla of wheel; Described steering wheel angle sensor is for gathering the steering wheel angle information of automobile;
Described data processing module connects single-chip microprocessor MCU, for the information that receiving sensor module transmits, realize conversion ultrasonic transduter institute being gathered to the screening of range information, the adding up of wheel speed sensors institute collection wheel speed impulse singla, steering wheel angle information that steering wheel angle sensor gathers, and effective information sends single-chip microprocessor MCU to the most at last;
Described single-chip microprocessor MCU connects read-out, for accepting the effective information that data processing module transmits, calculating the real-time vehicle body course angle of automobile, and exporting read-out to.
2. the computing system of vehicle body course angle in a kind of automatic parking process according to claim 1, it is characterized in that, described ultrasonic transduter is four, and vehicle body both sides are respectively distributed with two; Described wheel speed sensors is two, and is arranged on main reduction gear; Described steering wheel angle sensor is one, and is arranged in the Steering gear below bearing circle.
3. the computing system of vehicle body course angle in a kind of automatic parking process according to claim 1 and 2, is characterized in that, described two ultrasonic transduters being distributed in vehicle body homonymy are spaced and arrange highly identical.
4. the computing system of vehicle body course angle in a kind of automatic parking process according to claim 1 and 2, is characterized in that, described single-chip microprocessor MCU adopts the Strong MCU XC866 of company of Infineon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520058731.1U CN204452203U (en) | 2015-01-27 | 2015-01-27 | The computing system of vehicle body course angle in a kind of automatic parking process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520058731.1U CN204452203U (en) | 2015-01-27 | 2015-01-27 | The computing system of vehicle body course angle in a kind of automatic parking process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104627068A (en) * | 2015-01-27 | 2015-05-20 | 江苏大学 | Computing system and method for car body course angle in automatic parking process |
| CN107272671A (en) * | 2016-03-31 | 2017-10-20 | 福特全球技术公司 | Remote control for motor vehicles remote control |
-
2015
- 2015-01-27 CN CN201520058731.1U patent/CN204452203U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104627068A (en) * | 2015-01-27 | 2015-05-20 | 江苏大学 | Computing system and method for car body course angle in automatic parking process |
| CN104627068B (en) * | 2015-01-27 | 2017-01-18 | 江苏大学 | Computing method for car body course angle in automatic parking process |
| CN107272671A (en) * | 2016-03-31 | 2017-10-20 | 福特全球技术公司 | Remote control for motor vehicles remote control |
| CN107272671B (en) * | 2016-03-31 | 2022-03-22 | 福特全球技术公司 | Remote control device for remote control of motor vehicles |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20190127 |