CN104192058B - Motor vehicle emergency prompting device under low visibility condition and control method thereof - Google Patents
Motor vehicle emergency prompting device under low visibility condition and control method thereof Download PDFInfo
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Abstract
The invention provides a motor vehicle emergency prompting device under a low visibility condition and a control method thereof. The device comprises a driving acceleration sensor arranged in a vehicle body and used for judging the driving state of a motor vehicle and lighting a dome lamp in emergency; the inclination angle sensor is placed in the vehicle body and used for judging the inclination state of the vehicle body; and the skylight modules are arranged on the periphery of the vehicle body, and after the irradiation direction deviates, the normal irradiation angle is adjusted by the stepping motor. When emergency happens under the condition of low visibility (such as rainy days, haze days and snowy days), the device can play a very good prompting role, is suitable for various motor vehicles and guarantees the driving safety.
Description
Technical field
The present invention relates to a kind of motor vehicle emergency situation suggestion device and control method thereof, particularly relate to a kind of motor vehicle emergency situation suggestion device when low visibility and control method thereof.
Background technology
During low visibility (haze, rainy day, greasy weather, night), the rear-end collision of motorway and through street occurs frequent, the car closed on only with it when basic reason is the car brake in downstream can see brake lamp, then the car of upstream it is delivered to successively, if when upstream vehicle excessive velocities or safe distance are inadequate, then easily there is rear-end collision in brake not in time. In addition, when motorway has an accident, probably with the generation of two accidents, reason is also that brake information is passed through slowly.
It is passed through slow problem to solve brake information, the present invention adopts and points out the emergency situation before driver below according to the highlighted red laser lamp bundle (hereinafter referred to as sky lamp) of sky, to allow upstream vehicle driver see after emergency situation occurs, make driver have the adequate reaction time to brake, avoid accident and the generation of two accidents.
Prior art has by lamp according to the device of sky, but it can not in response to the vehicle emergency state, and can not ensure any in any position in emergency circumstances can ensure that day lamp is according to sky, in the present invention, after sky lamp is opened, the irradiating angle of the angle moment adjustment sky lamp of inclined degree according to vehicle body and BEAM SQUINT vertical direction, to ensure day lamp vertically according to sky, to reach best prompting effect.
Summary of the invention
It is an object of the invention to provide a kind of motor vehicle emergency situation suggestion device can be in case of emergency rear vehicle offer on a large scale warning function at vehicle; Can also ensure simultaneously vehicle when occur acutely to rock even topple, can be still rear on a large scale vehicle warning function is provided.
The present invention is for solving the problem, and the technical scheme specifically taked is as follows:
Motor vehicle emergency situation suggestion device, comprises a day lamp assembly, and described sky lamp assembly comprises the sky lamp being arranged on motorcar body outside and the housing holding described sky lamp, and described sky lamp is send vertically according to the laser lamp to the highlighted red colored lamp bundle of sky; First detection module, is arranged at vehicle body inside, slows down or brake signal for detecting vehicle, and the deceleration of described vehicle or brake signal are converted to the first value detection signal; Controller, it is connected with described first detection module, and for receiving the detection signal of described first detection module, described controller stores the first threshold range; When described controller receives described first value detection signal that the first detection module sends, described first value detection signal is compared with described first threshold range, only when described first value detection signal is beyond described first threshold range, just control described sky lamp and open.
Preferably, also comprising setting device, described setting device is for regulating the angle of described sky lamp; 2nd detection module, is arranged at vehicle body inside, for detecting the angle of inclination of vehicle body, and described inclination angle signal is converted to second signal detected value; Described controller is connected with described setting device with described 2nd detection module respectively, described controller is for receiving the detection signal of described 2nd detection module and controls described setting device to the adjustment of described sky lamp angle, and described controller stores Second Threshold scope; When sky lamp is closed, described controller does not send the signal regulating described sky lamp angle to described setting device; When sky lamp is opened, the second signal detected value sent by the 2nd detection module received is compared by described controller with described Second Threshold scope, when described second signal detected value is beyond described Second Threshold scope, described controller sends the signal regulating sky lamp angle to described setting device.
Preferably, described setting device comprises the stepper-motor being installed on vehicle body inside, and the output shaft of described stepper-motor connects the described sky lamp assembly being arranged on vehicle body outside; 3rd detection module, it is arranged at the described enclosure interior of described sky lamp assembly, for detecting the angle signal of described sky light irradiation light beam and vertical direction, and described angle signal is converted to the 3rd value detection signal; Described controller is connected with described 3rd detection module, and described controller can receive the detection signal of described 3rd detection module, and described controller stores the 3rd threshold range; When second signal detected value does not exceed described Second Threshold scope, described controller does not carry out comparing of described 3rd value detection signal and described 3rd threshold range; When second signal detected value exceeds described Second Threshold scope, described controller carries out comparing of described 3rd value detection signal and described 3rd threshold range, when described 3rd value detection signal is beyond described 3rd threshold range, described controller sends the signal regulating sky lamp angle to described setting device, the angle that described setting device controls described sky light irradiation light beam and vertical direction reduces gradually, until described 3rd value detection signal is in described 3rd threshold range.
Preferably, described first detection module comprises the 3-axis acceleration sensor being arranged on vehicle frame, for the travel acceleration value in machines motor-car transverse direction, longitudinal direction, vertical three directions; Described 2nd detection module comprises the double-shaft tilt angle sensor being arranged on vehicle frame, for inspection vehicle on horizontal and vertical two directions with the angle of horizontal plane; Described 3rd detection module comprises the lateral acceleration sensor being arranged at described enclosure interior and fore-and-aft acceleration sensor.
Preferably, described sky lamp component count is 4, it is installed on headstock portion, the vehicle body left and right sides and tailstock portion respectively, described fore-and-aft acceleration sensor setting is in the described sky lamp component internal being arranged on the vehicle body left and right sides, and described lateral acceleration sensor is arranged at the described sky lamp component internal being arranged on headstock portion and tailstock portion; Described setting device quantity is also 4, and it is connection corresponding to described sky lamp assembly respectively, and setting device described in each independently regulates corresponding described sky lamp assembly under the instruction of described controller; The described sky lamp assembly being arranged at headstock portion and tailstock portion protrudes from vehicle body.
Preferably, also comprising the manual switch that can control the lamp opening and closing of described sky, described manual switch is arranged near panel board.
This apparatus control method in turn includes the following steps:
1) detect vehicle to slow down or brake signal;
2) the described deceleration detected or brake signal are compared as the first value detection signal and the first threshold range set in advance;
3) when described first value detection signal exceeds described first threshold range, control vehicle sky lamp is opened;
4) when described first value detection signal does not exceed described first threshold range, the operation carrying out step 1) is returned;
Preferably, also comprise and carry out following steps successively:
5) after described sky lamp is opened, inspection vehicle body is in the lateral or vertical direction relative to the dip angle signal of horizontal plane;
6) the described dip angle signal detected is compared as second signal detected value and the Second Threshold scope set in advance;
7) when described second signal detected value exceeds described Second Threshold scope, the angular adjustment of control sky lamp;
8) when described second signal detected value does not exceed described Second Threshold scope, the operation carrying out step 5) is returned.
Preferably, also comprise and carry out following steps successively:
9) when described second signal detected value exceeds described Second Threshold scope, the angle signal of described sky light irradiation light beam and vertical direction is detected;
10) the described angle signal detected is compared as the 3rd value detection signal and the 3rd threshold range set in advance;
11) when described 3rd value detection signal exceeds described 3rd threshold range, the angle controlling described sky light irradiation light beam and vertical direction reduces gradually, until described 3rd value detection signal is in described 3rd threshold range;
12) when described 3rd value detection signal does not exceed described 3rd threshold range, the operation carrying out step 9) is returned.
The present invention has technique effect useful as follows:
(1) detecting sensor of the present invention is arranged on interior of motor vehicles, the acceleration of moment machines motor-car, and when there is emergency situation, sky lamp can be lighted immediately, and the emergency situation of front car is prompted to rear car;
(2) by detecting the angle of inclination of vehicle body relative to horizontal plane, when vehicle body occurs acutely to rock, sky lamp angle is regulated to make its irradiating angle remain vertical, even if car body rocks still can provide warning function for follow-up vehicle when even toppling, the regulative mode of threshold value ensures that sky lamp can not regulate repeatedly because vehicle body shakes normally;
(3) irradiating angle of sky lamp adopts stepper-motor to regulate, adopt multiple days lamps, indivedual damage is caused even if having an accident, other day lamp is still had to play warning function, special installation position can ensure to have at least a sky lamp according to sky, the integrally-regulated stability of multiple days lamp independence regulating guarantee;
(4) structure of the present invention is simple, with low cost, and the red laser lamp of high brightness can play huge suggesting effect, ensures road traffic safety.
Accompanying drawing explanation
Fig. 1 is overview flow chart.
Fig. 2 is the unlatching sequence of control schema of day lamp.
Fig. 3 judges to travel status routine schema.
Fig. 4 is that irradiating angle regulates schema.
Fig. 5 is that position description figure installed by day lamp.
Fig. 6 is a day lamp structure iron.
Fig. 7 tilts schematic diagram about vehicle body.
Fig. 8 is that angle of inclination regulates schema.
Fig. 9 is that vehicle body tilts forward and back schematic diagram.
Figure 10 is step motor control flow process.
Embodiment
As shown in Figure 1 and Figure 2, travel acceleration sensor adopts 3-axis acceleration sensor, the acceleration a of the horizontal working direction of motor vehicle that will recordx, horizontal vertical is in the acceleration a of X-directiony, and the universal gravity constant a of vertical directionzDeliver to core controller process, in conjunction with the change of XYZ tri-directional acceleration values, controller judges that whether current running state of automotive vehicle is normal, if judged result is emergency situation (scram or have an accident), then automatically open sky lamp prompting emergency situation, if judged result is normal traveling, then do not open a day lamp, and continue machines motor-car acceleration; Automatically the sky lamp opened, after emergency situation process terminates, driver should use manual switch to close sky lamp; In order to ensure that day lamp can play best suggesting effect in emergency circumstances, at motorcar body left-right and front-back, a day lamp module (see figure 5) is all installed; Being provided with double-shaft tilt angle sensor on vehicle frame, the vehicle body detected is sent to controller relative to the inclination angle signal of horizontal plane by it on horizontal and vertical, and when vehicle body tilts to a certain degree, controller starts the adjustment to sky lamp angle; The acceleration transducer of it lamp module inside is called lateral acceleration sensor and fore-and-aft acceleration sensor accordingly, the data that they collect deliver to controller, the direction of illumination of day lamp and the angle of vertical direction can be obtained through calculating, when controller detects angle deviation normal range further, adjust the vertical irradiation (sky light irradiation angle only just regulates) ensureing day lamp when sky lamp is opened by stepper-motor; In addition, sky lamp can manual unlocking, when visibility meter is low especially, relies on the strong penetrance of laser lamp, by the location information prompt of front car to rear car, be similar to the effect of danger warning photoflash lamp, but more eye-catching compared with danger warning photoflash lamp, prompting range is wider.
In Fig. 3, the acceleration in controller harvester motor-car XYZ tri-directions, then change in conjunction with three directional acceleration values judges traveling state, if controller judged result is normal, then do not open a day lamp, continue to gather acceleration, if controller judged result is emergency situation, then open sky lamp immediately.
In Fig. 4, in order to ensure that vehicle body is under any angle, sky lamp can vertically irradiate, and all increases illuminating angle adjusting device in the sky lamp module of the four direction all around of present motor vehicle, even if the sky lamp in certain direction damages because of accident like this, it is also possible to play warning function by other day lamp; And illuminating angle adjusting device ensure that the vertical irradiation of day lamp, thus points out best results.
Fig. 5 is motor vehicle vertical view, the sky lamp of 1,2,3,4 expression vehicle body surroundings, 5 expression motorcar bodies. The acceleration transducer of it lamp 1 and sky lamp 2 inside is called lateral acceleration sensor; The acceleration transducer of it lamp 3 and sky lamp 4 inside is called fore-and-aft acceleration sensor. When vehicle body left-right rollover, play warning function primarily of sky lamp 1 and sky lamp 2; When turning on one's side before and after vehicle body, play warning function primarily of sky lamp 3 and sky lamp 4; When motor vehicle be scram or without rollover time, four sky lamps play warning function simultaneously.
In Fig. 6,5 expression motorcar bodies, 6 expression stepper-motors, 7 expression stepper-motors protrude from the axle outside vehicle body, 8 expression high brightness red laser lamps, the i.e. main warning luminous component of sky lamp, 9 expressions acceleration transducer (lateral acceleration sensor or fore-and-aft acceleration sensor), 10 represent the shell for fixing 8 and 9. Four sky lamp modules around vehicle body all adopt this kind of structure.
As shown in Figure 7, sky, the front and back lamp of 1 and 2 expression motor vehicles in Fig. 7 .a, 5 expression motorcar bodies; Fig. 7 .b denotes the x-axis of lateral acceleration sensor in day lamp 1 and 2 and the direction of z-axis; In Fig. 7 .c, there is A when vehicle body generation transverse inclinationx=g*sin ��, Az=g*cos ��, then,, thus the inner MPU of lateral acceleration sensor can calculate the angle of transverse runout, when this angle exceeds controller preset range, controller drives stepper-motor regulating irradiation angle, until sky lamp vertically irradiates. As shown in Figure 8, after sky lamp is opened, double-shaft tilt angle sensor gathers vehicle body cross dip signal, controller judges to start to receive after car body obliqueness reaches the tilt threshold of setting the detected value of lateral acceleration sensor in sky lamp assembly, due to jolting of vehicle body, therefore the deviation angle �� of sky lamp will be a undulating quantity, therefore the method for threshold value is adopted to regulate deviation angle, only when deviation angle �� is greater than normal divergent angle ranges, just carry out closed loop adjustment by stepper-motor, until deviation angle is in normal range.
As shown in Figure 9, the principle that sky lamp deviation angle is measured with lamp deviation angle in sky during transverse inclination is measured when vehicle body longitudinally tilts is identical, just now use day lamp 3 and the fore-and-aft acceleration sensor of sky lamp 4 inside, using y-axis and z-axis to record the deviation angle of day lamp, sequence of control flow process is identical with during vehicle body transverse inclination.
It should be noted that, the deviation angle of four sky lamps is independent adjustment, and after sky lamp is opened, such as certain day, lamp deviation angle exceeded normal range, then regulate, until deviation angle is within normal range.
As shown in Figure 10, step-by-step motor is a kind of electric motor that electric impulse signal converts to respective corners displacement or line shift, and its operation needs special driving power supply, drives exporting of power supply to control by outside pulse signal. Each pulse signal can make stepper-motor rotate a fixing angle, and this angle is called step pitch angle. The quantity of pulse determines the total angle of rotation, and the frequency of pulse determines the speed that electric motor rotates, and the power-up sequence changing winding can change the direction of motor rotation. If controller detects that certain day lamp module deviation angle �� has exceeded normal range, then judge that deviation angle ��'s is positive and negative again, if just, then drive stepper-motor to rotate forward, umber of pulse, wherein �� is the step pitch angle of stepper-motor, namely applies the angle that a pulse stepper-motor rotates; Otherwise, if �� is negative, then drive stepper-motor reversion, umber of pulse, and then judge that the deviation angle of sky lamp is whether within normal range, if not within normal range, then regulates again, if within normal range, then continue to calculate deviation angle, to prepare the adjustment of next time. In order to reach maximum adjustment speed, pulse-repetition adopts the maximum frequency f that stepper-motor requiresmax��
Equipment mounting list, travel acceleration sensor is arranged on vehicle body inside, ensures that level is installed and fixes, and to obtain acceleration more accurately, controller and accessory thereof ensure fixed installation; Important is the installation of day lamp, and in order to ensure the prompting effect that it lamp is good, the four direction at vehicle body all placed a day lamp, and sky lamp protrudes from vehicle body a little, when there is front and back or left-right rollover at motor vehicle, still ensures the vertical irradiation of sky lamp; The manual switch of it lamp adopts common tumbler switch, is contained near panel board, facilitates the operation of officer.
Below the preferred embodiment of the present invention is described by reference to the accompanying drawings in detail; but; the detail that the present invention is not limited in above-mentioned enforcement mode; within the scope of the technical conceive of the present invention; the technical scheme of the present invention can being carried out multiple simple variant, these simple variant all belong to protection scope of the present invention.
In addition, each the concrete technology feature described in above-mentioned embodiment, when not contradiction, it is possible to combined by any suitable mode. In order to avoid unnecessary repetition, various possible array mode is illustrated by the present invention no longer separately. In addition, can also carrying out arbitrary combination between the various different enforcement mode of the present invention, as long as it does not run counter to the thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (8)
1. a motor vehicle emergency situation suggestion device, comprises a day lamp assembly, and described sky lamp assembly comprises the sky lamp being arranged on motorcar body outside and the housing holding described sky lamp, and described sky lamp is send vertically according to the laser lamp to the highlighted red colored lamp bundle of sky;
First detection module, is arranged at vehicle body inside, slows down or brake signal for detecting vehicle, and the deceleration of described vehicle or brake signal are converted to the first value detection signal;
Controller, it is connected with described first detection module, and for receiving the detection signal of described first detection module, described controller stores the first threshold range; When described controller receives described first value detection signal that the first detection module sends, described first value detection signal is compared with described first threshold range, only when described first value detection signal is beyond described first threshold range, just control described sky lamp and open;
It is characterized in that,
Also comprising setting device, described setting device is for regulating the angle of described sky lamp;
2nd detection module, is arranged at vehicle body inside, for detecting the angle of inclination of vehicle body, and described inclination angle signal is converted to second signal detected value;
Described controller is connected with described setting device with described 2nd detection module respectively, described controller is for receiving the detection signal of described 2nd detection module and controls described setting device to the adjustment of described sky lamp angle, and described controller stores Second Threshold scope; When sky lamp is closed, described controller does not send the signal regulating described sky lamp angle to described setting device; When sky lamp is opened, the second signal detected value sent by the 2nd detection module received is compared by described controller with described Second Threshold scope, when described second signal detected value is beyond described Second Threshold scope, described controller sends the signal regulating sky lamp angle to described setting device.
2. motor vehicle emergency situation suggestion device according to claim 1, it is characterised in that,
Described setting device comprises the stepper-motor being installed on vehicle body inside, and the output shaft of described stepper-motor connects the described sky lamp assembly being arranged on vehicle body outside;
3rd detection module, it is arranged at the described enclosure interior of described sky lamp assembly, for detecting the angle signal of described sky light irradiation light beam and vertical direction, and described angle signal is converted to the 3rd value detection signal;
Described controller is connected with described 3rd detection module, and described controller can receive the detection signal of described 3rd detection module, and described controller stores the 3rd threshold range; When second signal detected value does not exceed described Second Threshold scope, described controller does not carry out comparing of described 3rd value detection signal and described 3rd threshold range; When second signal detected value exceeds described Second Threshold scope, described controller carries out comparing of described 3rd value detection signal and described 3rd threshold range, when described 3rd value detection signal is beyond described 3rd threshold range, described controller sends the signal regulating sky lamp angle to described setting device, the angle that described setting device controls described sky light irradiation light beam and vertical direction reduces gradually, until described 3rd value detection signal is in described 3rd threshold range.
3. motor vehicle emergency situation suggestion device according to claim 2, it is characterised in that,
Described first detection module comprises the 3-axis acceleration sensor being arranged on vehicle frame, for the travel acceleration value in machines motor-car transverse direction, longitudinal direction, vertical three directions;
Described 2nd detection module comprises the double-shaft tilt angle sensor being arranged on vehicle frame, for inspection vehicle on horizontal and vertical two directions with the angle of horizontal plane;
Described 3rd detection module comprises the lateral acceleration sensor being arranged at described enclosure interior and fore-and-aft acceleration sensor.
4. motor vehicle emergency situation suggestion device according to claim 3, it is characterized in that, described sky lamp component count is 4, it is installed on headstock portion, the vehicle body left and right sides and tailstock portion respectively, described fore-and-aft acceleration sensor setting is in the described sky lamp component internal being arranged on the vehicle body left and right sides, and described lateral acceleration sensor is arranged at the described sky lamp component internal being arranged on headstock portion and tailstock portion; Described setting device quantity is also 4, and it is connection corresponding to described sky lamp assembly respectively, and setting device described in each independently regulates corresponding described sky lamp assembly under the instruction of described controller; The described sky lamp assembly being arranged at headstock portion and tailstock portion protrudes from vehicle body.
5. according to motor vehicle emergency situation suggestion device in any one of the preceding claims wherein, it is characterised in that, also comprise the manual switch that can control the lamp opening and closing of described sky, described manual switch is arranged near panel board.
6. the control method of motor vehicle emergency situation suggestion device as described in an item as arbitrary in claim 1-5, it is characterised in that, described method carries out following steps successively:
1) detect vehicle to slow down or brake signal;
2) the described deceleration detected or brake signal are compared as the first value detection signal and the first threshold range set in advance;
3) when described first value detection signal exceeds described first threshold range, control vehicle sky lamp is opened;
4) when described first value detection signal does not exceed described first threshold range, the operation carrying out step 1) is returned.
7. the control method of motor vehicle emergency situation suggestion device according to claim 6, it is characterised in that, also comprise and carry out following steps successively:
5) after described sky lamp is opened, inspection vehicle body is in the lateral or vertical direction relative to the dip angle signal of horizontal plane;
6) the described dip angle signal detected is compared as second signal detected value and the Second Threshold scope set in advance;
7) when described second signal detected value exceeds described Second Threshold scope, the angular adjustment of control sky lamp;
8) when described second signal detected value does not exceed described Second Threshold scope, the operation carrying out step 5) is returned.
8. the control method of motor vehicle emergency situation suggestion device according to claim 7, it is characterised in that, also comprise and carry out following steps successively:
9) when described second signal detected value exceeds described Second Threshold scope, the angle signal of described sky light irradiation light beam and vertical direction is detected;
10) the described angle signal detected is compared as the 3rd value detection signal and the 3rd threshold range set in advance;
11) when described 3rd value detection signal exceeds described 3rd threshold range, the angle controlling described sky light irradiation light beam and vertical direction reduces gradually, until described 3rd value detection signal is in described 3rd threshold range;
12) when described 3rd value detection signal does not exceed described 3rd threshold range, the operation carrying out step 9) is returned.
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| CN105922930A (en) * | 2016-05-21 | 2016-09-07 | 李军 | Laser emitting device based on traffic accident pre-warning application |
| CN109756161A (en) * | 2019-01-18 | 2019-05-14 | 南京创固得电子科技有限公司 | A kind of optimization method improving stepper motor driving precision |
| CN112356767A (en) * | 2020-12-13 | 2021-02-12 | 上海兴致汽车科技有限公司 | System, equipment and vehicle for road condition early warning |
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| FR2883530A1 (en) * | 2005-03-22 | 2006-09-29 | Peugeot Citroen Automobiles Sa | Motor vehicle stop light operation control has units to control lighting/extinction of stop lights and coupled to vehicle rolling condition analyzing units to trigger lighting when vehicle deceleration is higher than threshold value |
| CN1883982A (en) * | 2005-06-24 | 2006-12-27 | 龚青 | Vehicular status signal system |
| DE102007046319A1 (en) * | 2007-09-27 | 2009-04-02 | Robert Bosch Gmbh | Signaling device for motor vehicle, particularly motorcycle, has signal releasing unit for automatic release of warning signal to road user depending on safety critical situation of motor vehicle |
| CN102785613A (en) * | 2011-05-19 | 2012-11-21 | 邱金和 | Modified structure of warning device |
| CN103732448A (en) * | 2011-01-26 | 2014-04-16 | Adac塑模公司 | Center high-mount brake light system |
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- 2014-07-24 CN CN201410354937.9A patent/CN104192058B/en active Active
Patent Citations (5)
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| FR2883530A1 (en) * | 2005-03-22 | 2006-09-29 | Peugeot Citroen Automobiles Sa | Motor vehicle stop light operation control has units to control lighting/extinction of stop lights and coupled to vehicle rolling condition analyzing units to trigger lighting when vehicle deceleration is higher than threshold value |
| CN1883982A (en) * | 2005-06-24 | 2006-12-27 | 龚青 | Vehicular status signal system |
| DE102007046319A1 (en) * | 2007-09-27 | 2009-04-02 | Robert Bosch Gmbh | Signaling device for motor vehicle, particularly motorcycle, has signal releasing unit for automatic release of warning signal to road user depending on safety critical situation of motor vehicle |
| CN103732448A (en) * | 2011-01-26 | 2014-04-16 | Adac塑模公司 | Center high-mount brake light system |
| CN102785613A (en) * | 2011-05-19 | 2012-11-21 | 邱金和 | Modified structure of warning device |
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