CN104442546A - Automobile light self-adaptation control device based on CAN (controller area network) bus and control method thereof - Google Patents
Automobile light self-adaptation control device based on CAN (controller area network) bus and control method thereof Download PDFInfo
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- CN104442546A CN104442546A CN201410717177.3A CN201410717177A CN104442546A CN 104442546 A CN104442546 A CN 104442546A CN 201410717177 A CN201410717177 A CN 201410717177A CN 104442546 A CN104442546 A CN 104442546A
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Abstract
The invention belongs to the technical field of automobile electronic devices, and particularly relates to an automobile distance light and passing light self-adaptation control device based on a CAN (controller area network) bus and used when an automobile turns, and a control method of the device. The device comprises a vehicle speed sensor, a steering wheel angle sensor, a yam velocity sensor and an ECU (electronic control unit) used for collecting and processing data of the vehicle speed sensor, the steering wheel angle sensor and the yam velocity sensor, wherein the vehicle speed sensor, the steering wheel angle sensor and the yam velocity sensor are all connected with a signal input end of the ECU through the CAN bus, and an output end of the ECU is connected with a low beam and a high beam through a trigger respectively. According to the method, the collected data of the sensors are compared with preset threshold values, whether the automobile enters a curve or goes off the curve is judged, the light beam and the high beam are automatically switched when the automobile turns, dead angles of lighting are reduced, and safety hidden risks are eliminated. Therefore, misjudgment operations of a driver are prevented, and the operation burden of the driver is reduced.
Description
Technical field
The invention belongs to auto electroincs technical field, far and near light adaptive controller and control method thereof when being specifically related to a kind of automobile turning based on CAN.
Background technology
At present, along with improving constantly of economy, China's automobile pollution rises just year by year, and the thing followed is more serious driving safety problem.During night running, chaufeur can open country beam usually to increase the field range of oneself, but two car intersections, overtake other vehicles time automobile front should be switched to passing light, this just considerably increases the driving fatigue of chaufeur.For alleviating the driving fatigue of chaufeur, long-and-short distant light self-checking device arises at the historic moment, but, the only action when automobile meeting of current long-and-short distant light self-checking device, and great majority adopt photochromics to detect light intensity, as photoconductive cell, photodiode etc., and its temperature influence is comparatively large, speed of response is comparatively slow, physical property is poor.When night, automobile turning travelled, car bulb moves on to roadside by road, if now do not switch to passing light, chaufeur will not see road surface nearby, easily causes erroneous judgement.Automobile drives to from high-speed straight-line and enters ring road or when urban highway and sky way are turned, if not in time head light is switched to passing light, very likely traffic accidents can occur, form certain threat to chaufeur personal safety.
Summary of the invention
The object of the invention is to the defect that exists for prior art and deficiency, provide a kind of can when vehicle at night is turned the car bulb adaptive controller based on CAN of automatic switchover distance-light and control method thereof.
For achieving the above object, the present invention is by the following technical solutions:
Car bulb adaptive controller based on CAN comprises: for the car speed sensor of monitor vehicle moving velocity, for monitoring the steering wheel angle sensor of steering wheel rotation angle, and for gathering the running computer of car speed sensor and steering wheel angle sensing data; Described car speed sensor is all connected with the signal input part of car running computer by CAN with steering wheel angle sensor;
The signal output part of described car running computer is connected with country beam with passing light respectively by binary pair.
Further, comprise the yaw-rate sensor for monitoring automobile yaw angle, described yaw-rate sensor is connected with CAN.
Further, under described yaw-rate sensor is arranged on automobile handrail box.
Further, it is characterized in that, described steering wheel angle sensor setting is in car steering wheel rotating shaft.
Further, described speed sensor is connected with the speed meter of automobile.
Based on the control method of the car bulb adaptive controller of CAN, comprise the following steps:
First, when setting automobile enters curved, automobile speed threshold value is v
0, steering wheel angle threshold value is δ
0, vehicle body yaw velocity threshold value is r
0; When automobile goes out curved, automobile speed threshold value is v '
0, steering wheel angle threshold value is δ '
0;
When automobile enter curved or go out curved time, car speed sensor gather current vehicle speed v, steering wheel angle sensor gathers current steering wheel angle δ, yaw-rate sensor gathers current vehicle body yaw velocity r, car running computer collects current data by CAN, and compares with respective threshold
Work as v<v
0, δ > δ
0time, then to judge that automobile enters curved for car running computer, and send signal switching long-and-short distant light to binary pair, opens passing light and close country beam;
As v>v '
0, δ < δ '
0time, then to judge that automobile goes out curved for car running computer, and send signal switching long-and-short distant light to binary pair, opens country beam and close passing light.
Further, also comprise that first to set into vehicle body yaw velocity threshold value time curved be r
0, when automobile goes out curved, vehicle body yaw velocity threshold value is r '
0; Yaw-rate sensor gathers current vehicle body yaw velocity r, and car running computer collects current data by CAN, and compares with threshold value.
Further, as r γ
0>r
0time, it is curved that car running computer judges that automobile enters, and send signal switching long-and-short distant light to binary pair, opens passing light and close country beam;
As r<r '
0time, then to judge that automobile goes out curved for car running computer, and send signal switching long-and-short distant light to binary pair, opens country beam and close passing light.
Compared with prior art, device of the present invention has following useful technique effect: by arranging car speed sensor monitor vehicle moving velocity, steering wheel angle Sensor monitoring steering wheel rotation angle is set, ECU gathers the signal of each sensor by CAN, thus judge whether vehicle carries out turning action, and to the switching of binary pair transmission level signal control long-and-short distant light, the automatic switchover of headlight for vehicle light when completing turning.Structure of the present invention is simple, does not need additionally to add photochromics or miscellaneous part, the automatic switchover long-and-short distant light when turning, and reduces illumination dead angle, eliminates safe hidden trouble, thus prevents chaufeur from judging operation by accident, reduces driver's operation burden.
Further, by arranging yaw-rate sensor, monitor vehicle yaw angle, effectively can improve the accuracy that turn inside diameter action judges, reduces maloperation, ensures safe driving.
Compared with prior art, control method provided by the invention has following useful technique effect: by arranging car speed sensor monitor vehicle moving velocity, steering wheel angle Sensor monitoring steering wheel rotation angle is set, yaw-rate sensor monitor vehicle yaw angle is set, car running computer gathers the data of each sensor by CAN, and compare with each threshold value preset, thus judge whether vehicle carries out turning action, and to the switching of binary pair transmission level signal control long-and-short distant light, the automatic switchover of headlight for vehicle light when completing turning.Control method provided by the invention can when turning automatic switchover long-and-short distant light, reduce illumination dead angle, eliminate safe hidden trouble, thus prevent chaufeur from judging operation by accident, reduce driver's operation burden.
Accompanying drawing explanation
Fig. 1 is apparatus of the present invention structural representation;
Fig. 2 is control method diagram of circuit of the present invention;
Wherein: 1 is speed sensor; 2 is steering wheel angle sensor; 3 is yaw-rate sensor; 4 is CAN; 5 is car running computer; 6 is binary pair; 7 is country beam; 8 is passing light.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.See Fig. 1, the present invention includes the speed sensor 1 for monitor vehicle moving velocity, for monitoring the steering wheel angle sensor 2 of steering wheel rotation angle, for the yaw-rate sensor 3 of monitor vehicle yaw angle, and the car running computer (ECU) 5 for gathering each sensing data; Speed sensor 1, steering wheel angle sensor 2 are connected respectively by the signal input part of CAN 4 with car running computer 4 with yaw-rate sensor 3; The signal output part of car running computer 4 is connected with country beam 8 with passing light 7 respectively by binary pair 6.
Speed sensor 1 is connected with the speed meter of automobile.Steering wheel angle sensor 2 is arranged in car steering wheel rotating shaft, under yaw-rate sensor 3 is arranged on automobile handrail box.
During work, when the vehicle is turning, car speed reduces, speed sensor 1 Negotiation speed table detects that car speed reduces, by the change of automobile turning wheel rotating shaft angle, steering wheel angle sensor 2 detects that vehicle is just turned, simultaneously, yaw-rate sensor 3 detects vehicle body yaw during turn inside diameter action, ECU5 reads car speed sensor 1 by CAN 4, the data of steering wheel angle sensor 2 and yaw-rate sensor 3, and judge that vehicle is turned according to data, output low level signal is to binary pair 6, thus close country beam 7, open passing light 8.When turn inside diameter release, the speed of a motor vehicle is gone up, steering handwheel shaft rotary corner no longer changes, vehicle body no longer yaw time, ECU5 gathers the data-signal of car speed sensor 1, steering wheel angle sensor 2 and yaw-rate sensor 3 respectively and judges that turning action terminates according to each sensor signal, export high level to binary pair, passing light is closed, and country beam is opened; Thus realize the function of automatic switchover long-and-short distant light when Vehicular night is turned.
The present invention only need judge turn inside diameter by the signal of sensor thus control high-low beam light to switch, do not need additionally to add photochromics, can better illuminate the vision dead zone being positioned at curve inner side, reduce illumination dead angle, eliminate safe hidden trouble, reduce driver intensity simultaneously, prevent chaufeur from judging operation by accident.
See Fig. 2, control method of the present invention comprises: first setting threshold in car running computer, and when car enters and rolls bend away from, setting automobile speed threshold value is respectively v
0with v '
0, steering wheel angle threshold value is δ
0with δ '
0, vehicle body yaw velocity threshold value is r
0with r '
0, when automobile at night enters bend, speed of a motor vehicle v, steering wheel angle δ and vehicle body yaw velocity r all change, and all reach predetermined threshold value, i.e. current vehicle speed v<v once these numerical value
0, steering wheel angle δ > δ
0, vehicle body yaw velocity r γ
0>r
0, then ECU judges that automobile is turned, and sends signal switching long-and-short distant light, if be country beam before, switches to passing light, if be passing light before, is failure to actuate.Same, when automobile rolls bend away from, except the speed of a motor vehicle promotes, above-mentioned data all close to 0, when namely these numerical value reach predetermined threshold value, can meet speed of a motor vehicle v>v '
0, steering wheel angle δ < δ '
0with vehicle body yaw velocity r<r '
0, ECU then judges that automobile rolls bend away from, and sends signal switching to country beam.
Claims (8)
1. the car bulb adaptive controller based on CAN, it is characterized in that, comprise the car speed sensor (1) for monitor vehicle moving velocity, for monitoring the steering wheel angle sensor (2) of steering wheel rotation angle, and for gathering the running computer (5) of car speed sensor (1) and steering wheel angle sensor (2) data; Described car speed sensor (1) and steering wheel angle sensor (2) are all connected by the signal input part of CAN (4) with car running computer (4);
The signal output part of described car running computer (5) is connected with country beam (7) with passing light (8) respectively by binary pair (6).
2. a kind of car bulb adaptive controller based on CAN according to claim 1, it is characterized in that, also comprise the yaw-rate sensor (3) for monitoring automobile yaw angle, described yaw-rate sensor (3) is connected with CAN (4).
3. want a kind of car bulb adaptive controller based on CAN described in 1 or 2 according to right, it is characterized in that, under described yaw-rate sensor (3) is arranged on automobile handrail box.
4. a kind of car bulb adaptive controller based on CAN according to claim 1 and 2, is characterized in that, described steering wheel angle sensor (2) is arranged in car steering wheel rotating shaft.
5. a kind of car bulb adaptive controller based on CAN according to claim 1 and 2, it is characterized in that, described speed sensor (1) is connected with the speed meter of automobile.
6., based on a control method for the car bulb adaptive controller of CAN, it is characterized in that, comprise the following steps:
First, when setting automobile enters curved, automobile speed threshold value is v
0, steering wheel angle threshold value is δ
0, vehicle body yaw velocity threshold value is r
0; When automobile goes out curved, automobile speed threshold value is v '
0, steering wheel angle threshold value is δ '
0;
When automobile enter curved or go out curved time, car speed sensor (1) gathers current vehicle speed v, and steering wheel angle sensor (2) gathers current steering wheel angle δ, and car running computer (5) collects current data by CAN (4), and compare with respective threshold
Work as v<v
0, δ > δ
0time, then to judge that automobile enters curved for car running computer (5), and send signal switching long-and-short distant light to binary pair (6), opens passing light (8) and close country beam (7);
As v>v '
0, δ < δ '
0time, then to judge that automobile goes out curved for car running computer (5), and send signal switching long-and-short distant light to binary pair (6), opens country beam (7) and close passing light (8).
7. the control method of a kind of car bulb adaptive controller based on CAN according to claim 6, is characterized in that, also comprises that first to set into vehicle body yaw velocity threshold value time curved be r
0, when automobile goes out curved, vehicle body yaw velocity threshold value is r '
0; Yaw-rate sensor (3) gathers current vehicle body yaw velocity r, and car running computer (5) collects current data by CAN (4), and compares with threshold value.
8. the control method of a kind of car bulb adaptive controller based on CAN according to claim 7, is characterized in that, as r γ
0>r
0time, it is curved that car running computer (5) judges that automobile enters, and send signal switching long-and-short distant light to binary pair (6), opens passing light (8) and close country beam (7);
As r<r '
0time, then to judge that automobile goes out curved for car running computer (5), and send signal switching long-and-short distant light to binary pair (6), opens country beam (7) and close passing light (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410717177.3A CN104442546A (en) | 2014-11-28 | 2014-11-28 | Automobile light self-adaptation control device based on CAN (controller area network) bus and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410717177.3A CN104442546A (en) | 2014-11-28 | 2014-11-28 | Automobile light self-adaptation control device based on CAN (controller area network) bus and control method thereof |
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| CN104442546A true CN104442546A (en) | 2015-03-25 |
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ID=52889556
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410717177.3A Pending CN104442546A (en) | 2014-11-28 | 2014-11-28 | Automobile light self-adaptation control device based on CAN (controller area network) bus and control method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105015405A (en) * | 2015-07-27 | 2015-11-04 | 苏州宏展信息科技有限公司 | Method for adaptively switching high and low beam lights |
| CN107628111A (en) * | 2017-10-24 | 2018-01-26 | 东北林业大学 | A kind of General Motors steering wheel angle measuring method |
| CN108621915A (en) * | 2018-04-23 | 2018-10-09 | 常州星宇车灯股份有限公司 | A kind of automotive self-adaptive distance-light traffic control system |
| CN111674323A (en) * | 2020-06-10 | 2020-09-18 | 深圳南方德尔汽车电子有限公司 | Vehicle-mounted automatic headlamp control method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1491402A2 (en) * | 2003-06-25 | 2004-12-29 | Hitachi, Ltd. | Auto light system for vehicles |
| JP2010116015A (en) * | 2008-11-12 | 2010-05-27 | Ud Trucks Corp | Lighting controller of lamp |
| US7825600B2 (en) * | 2000-03-20 | 2010-11-02 | Gentex Corporation | System for controlling vehicle equipment |
| CN202923476U (en) * | 2012-10-31 | 2013-05-08 | 长安大学 | Automatic switching device for distance light and passing light during night driving |
| CN103192759A (en) * | 2013-04-22 | 2013-07-10 | 长安大学 | System and method for controlling planar array LED vehicle lamp for vehicle meeting at night |
| CN203063795U (en) * | 2012-12-24 | 2013-07-17 | 济南吉利汽车有限公司 | Vehicle-steering pedestrian protecting system |
-
2014
- 2014-11-28 CN CN201410717177.3A patent/CN104442546A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7825600B2 (en) * | 2000-03-20 | 2010-11-02 | Gentex Corporation | System for controlling vehicle equipment |
| EP1491402A2 (en) * | 2003-06-25 | 2004-12-29 | Hitachi, Ltd. | Auto light system for vehicles |
| JP2010116015A (en) * | 2008-11-12 | 2010-05-27 | Ud Trucks Corp | Lighting controller of lamp |
| CN202923476U (en) * | 2012-10-31 | 2013-05-08 | 长安大学 | Automatic switching device for distance light and passing light during night driving |
| CN203063795U (en) * | 2012-12-24 | 2013-07-17 | 济南吉利汽车有限公司 | Vehicle-steering pedestrian protecting system |
| CN103192759A (en) * | 2013-04-22 | 2013-07-10 | 长安大学 | System and method for controlling planar array LED vehicle lamp for vehicle meeting at night |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105015405A (en) * | 2015-07-27 | 2015-11-04 | 苏州宏展信息科技有限公司 | Method for adaptively switching high and low beam lights |
| CN107628111A (en) * | 2017-10-24 | 2018-01-26 | 东北林业大学 | A kind of General Motors steering wheel angle measuring method |
| CN108621915A (en) * | 2018-04-23 | 2018-10-09 | 常州星宇车灯股份有限公司 | A kind of automotive self-adaptive distance-light traffic control system |
| CN111674323A (en) * | 2020-06-10 | 2020-09-18 | 深圳南方德尔汽车电子有限公司 | Vehicle-mounted automatic headlamp control method |
| CN111674323B (en) * | 2020-06-10 | 2021-10-22 | 深圳南方德尔汽车电子有限公司 | Vehicle-mounted automatic headlamp control method |
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Application publication date: 20150325 |