CN203766618U - Anti-collision system in car door opening process - Google Patents
Anti-collision system in car door opening process Download PDFInfo
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- CN203766618U CN203766618U CN201320830585.0U CN201320830585U CN203766618U CN 203766618 U CN203766618 U CN 203766618U CN 201320830585 U CN201320830585 U CN 201320830585U CN 203766618 U CN203766618 U CN 203766618U
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- car door
- door lock
- door
- micro controller
- control circuit
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Abstract
The utility model discloses an anti-collision system in the car door opening process and belongs to the technical field of installation devices. The anti-collision system comprises an ultrasonic ranging probe, an ultrasonic control circuit, a temperature measuring sensor, a capacitance type proximity sensor, a single-chip microcomputer, a differentiating circuit, a door lock control circuit, a warning circuit, a car door lock electromagnetic switch, a buzzer and a display. The distance from a rear moving target to a car is calculated according to the transit time method, after the distance is calculated through the single-chip microcomputer, the differentiating circuit is used for carrying out derivation on the distance to obtain the speed of the moving target, and then the single-chip microcomputer calculates approaching time according to the distance and the speed. The method for judging whether the door is opened through combination of the distance and the approaching time is put forward, and therefore the safety and the effectiveness are improved.
Description
Technical field
The utility model belongs to erecting device technical field, is specifically related to a kind of car door opening collision avoidance system.
Background technology
Current along with expanding economy, the owning amount of automobile increases sharply.People enjoy the while easily and efficiently that automobile brings, and automobile safety accident also constantly increases.There is a large amount of parking stalls in urban highway both sides, in the time that the people in vehicle opens car door and gets off, be easy to make the messenger at car door and rear or send a car bump, thereby safety misadventure occurs, cause even human loss of property.
At present for addressing the above problem, there is multiple Intelligent door collision avoidance system, these systems are to be criterion with safety distance mostly, this standard is rational as a rule, but ignore the height of the speed of dangerous moving target, having certain potential safety hazard, is not desirable especially for the determine effect of opening/closing door of vehicle.For example,, when mobile risk object is when running at high speed, if only consider that distance judges whether that close door probably also can cause potential safety hazard.People also have certain vigilance to safety in the time of road driving, so preventing car door collision system should be considered the reaction of people after car door opening, to reach more comprehensive object.
The measurement of passing through to adjust the distance in the past, judge whether that door opening has certain irrationality, for example, distant when back car, but speed is very fast, if at this moment open car door descendant out, it is dangerous property, reduce this danger, just must expand the critical range of opening car door, waste very much again for the target of low speed like this.
Utility model content
The purpose of this utility model is to address the above problem; a kind of car door opening collision avoidance system is provided; this system is in the time of car door opening; prevent the defencive function that back car, messenger are clashed into; it can carry out to the mobile object at rear the measurement of displacement, speed; and calculate mobile object and arrive time of vehicle, thereby whether judge opening car door.
To achieve these goals, the technical scheme that the utility model adopts is: comprise the range cells that is installed on respectively vehicle rear both sides, the micro controller system that is installed on the door lock unit in car door, the capacitance-type sensor for detection of the action of opening the door, caution system and control coordination whole system; Range cells, door lock unit, capacitance-type sensor and caution system are all connected with micro controller system.
Also comprise the temperature probe that is connected with micro controller system and for calculating the differential circuit of target moving velocity.
Described range cells comprises the ultrasonic control circuit being connected with micro controller system, is connected with ultrasonic ranging probe on ultrasonic control circuit, and ultrasonic ranging probe is provided with two, is installed on respectively the side of vehicle rear steering indicating light.
The quantity of described capacitance-type sensor is identical with car door quantity, is arranged on respectively on the handle for opening door of car door.
Described capacitance-type sensor is capacitive proximity sensor.
Described door lock unit comprises the door lock control circuit being arranged in car door and is used for controlling the door lock electromagnetic switch that car door opens and closes; Door lock electromagnetic switch is connected with door lock control circuit, and the control signal input end of door lock control circuit is connected with micro controller system.
Described caution system comprises the warning circuit and the buzzer phone for the danger signal that gives a warning being connected with warning circuit and the telltale that are connected with micro controller system.
Compared with prior art, the utlity model has following beneficial effect:
The utility model is installed range cells at vehicle rear, capacitive transducer and door lock unit are installed on car door, by the coordination control of micro controller system, in the time there is moving target in rear view of vehicle, judge whether safety of car door opening, by unlatching or the maintenance locking-in state of door lock unit control car door, ensure that the risk object that car door can not occurred by rear view of vehicle in the time opening clashes into, and has strengthened safety.
Further, when micro controller system calculate apart from time, will be apart from exporting to differential circuit, use the differential circuit differentiate of adjusting the distance to obtain the speed of moving target, then micro controller system is obtained time to approach according to distance and speed.And jointly judge whether with time and distance afterwards can opening car door, safety and validity are improved.
Further, the utility model has used electromagnetic switch to unblank, and when no power, because the operation of spring is in closed condition, when energising, to overcome spring force be car door opening to electromagnetic force, in door lock control circuit, there is power amplifier, enough energetic start up electromagnetic switch work can be provided.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model ultrasonic ranging probe installation location;
Fig. 2 is electrical schematic diagram of the present utility model;
Fig. 3 is the utility model door lock electromagnetic switch installation site schematic diagram;
Fig. 4 is control flow chart of the present utility model.
Wherein, 1 is door lock electromagnetic switch.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Referring to Fig. 1 to Fig. 3, the utility model comprises the range cells that is installed on respectively vehicle rear both sides, the micro controller system that is installed on the door lock unit in car door, the capacitance-type sensor for detection of the action of opening the door, caution system and control coordination whole system, in addition, also comprise be connected with micro controller system for calculating rear moving target apart from the temperature probe of vehicle distances with for calculating the differential circuit of target moving velocity.As shown in Figure 2, range cells, door lock unit, capacitance-type sensor and caution system are all connected with micro controller system.Range cells comprises the ultrasonic control circuit being connected with micro controller system, is connected with ultrasonic ranging probe on ultrasonic control circuit, and ultrasonic ranging probe is provided with two, is installed on respectively the side of vehicle rear steering indicating light, as shown in Figure 1.Capacitance-type sensor is capacitive proximity sensor, and quantity is identical with car door quantity, is arranged on respectively on the handle for opening door of car door.As shown in Figure 3, door lock unit comprises the door lock control circuit being arranged in car door and is used for controlling the door lock electromagnetic switch 1 that car door opens and closes; Door lock electromagnetic switch 1 is connected with door lock control circuit, and the control signal input end of door lock control circuit is connected with micro controller system.Caution system comprises the warning circuit and the buzzer phone for the danger signal that gives a warning being connected with warning circuit and the telltale that are connected with micro controller system.
Principle of work of the present utility model:
The action of opening the door of capacitive proximity sensor perception just drive ultrasonic control circuit work when micro controller system detects, ultrasonic control circuit is sent into the alternating voltage (being generally 40KHz) of certain frequency to ultrasonic probe.Ultrasonic probe is made with piezoelectric chip, and the piezoeffect of piezoelectric chip can be used for launching super sonic.In the time of the additional superaudible alternating signal in the two poles of the earth of piezoelectric chip, piezoelectric chip distortion, vibration, just produce super sonic.Otherwise while receiving super sonic, the ultrasonic signal reflecting can push piezoelectric chip, produces superaudible electric signal, just becomes ultrasonic receiver.
The common method of ultrasonic ranging is transit time method, encounters after object and produces echo due to super sonic, is popped one's head in and receives.The aerial velocity of sound is c, and the hypracoustic interval travel time is t, and the distance between probe and obstacle is
Considered the impact of temperature for the measurement of distance, it has temperature probe to detect the temperature of air, be reflected back hypracoustic time and air themperature when detecting from transmitting super sonic to receiving rear moving target, just can calculate the distance of rear moving target apart from vehicle according to transit time method, thereby can obtain more accurately displacement, for calculating below, ready.
The aerial velocity of sound is subject to the impact of temperature, and the computing formula of the velocity of sound is
C
0=331.6m/s, is the benchmark velocity of sound, the Celsius temperature that τ is air.
Known, record from being transmitted into the hypracoustic time that receives when obtain air themperature and ultrasonic probe by temperature probe, just can obtain range finding from.
What the utility model mainly adopted is using the time as basis for estimation, with the distance of target and the moving velocity of target, calculates the time that arrives this vehicle, this more reasonably criterion.With the marginal time as standard, when the calculated time be less than, while equaling the marginal time, door lock electromagnetic switch is failure to actuate, and makes door lock keep locking-in state; In the time that the calculated time is greater than the marginal time, door lock electromagnetic switch energising action, opens car door door lock.The threat of the target of but close proximity slow for fear of speed, then adjust the distance and judge, if too near speed in time still makes door lock live very slowly, further tightening security property.
Micro controller system calculates range finding from rear, then will be apart from income differential circuit, and adjusting the distance differentiates can obtain the speed of target, then speed is returned to micro controller system again, utilizes distance and speed just can obtain target to arrive the time of this vehicles.At this moment just can judge whether can opening car door.If range finding is from being less than, equaling to be less than critical range or the time of advent, while equaling the marginal time, door lock electromagnetic switch 1 is failure to actuate, and makes door lock keep locking-in state, and by buzzer phone and telltale warning of hazardous; Otherwise door lock electromagnetic switch (1) energising action, opens car door door lock.Micro controller system connects car door door lock electromagnetic switch (1) by door lock control circuit, to can drive smoothly door lock electromagnetic switch 1.Wherein, the program adopting in micro controller system is prior art, concrete:
Arithmetical operation and relational calculus algorithm: with reference to the operational symbol of " 51 Single Chip C Language application programming examples are presented briefly and succinctly " (second edition, the permanent Liu Bowen of Dai Jiadaiwei writes Electronic Industry Press) the 54th and 55 pages.
The amount of being compared is assignment operator "=" setting for setting data: with reference to the 56th page of " 51 Single Chip C Language application programming examples are presented briefly and succinctly " (second edition, the permanent Liu Bowen of Dai Jiadaiwei writes Electronic Industry Press).
Selection algorithm: the if-else statement of the case statement that reference " 51 Single Chip C Language application programming examples are presented briefly and succinctly " (second edition, the permanent Liu Bowen of Dai Jiadaiwei writes Electronic Industry Press) is the 65th page.
Round-robin algorithm: the while statement of for statement that reference " 51 Single Chip C Language application programming examples are presented briefly and succinctly " (second edition, the permanent Liu Bowen of Dai Jiadaiwei writes Electronic Industry Press) is the 68th page.
Branching algorithm: the goto statement of the jump statement that reference " 51 Single Chip C Language application programming examples are presented briefly and succinctly " (second edition, the permanent Liu Bowen of Dai Jiadaiwei writes Electronic Industry Press) is the 71st page.
Temperature probe adopts digital temperature sensor DS1624, the program description with reference to " 51 Single Chip C Language application programming examples are presented briefly and succinctly " (second edition, the permanent Liu Bowen of Dai Jiadaiwei writes Electronic Industry Press) program with reference to 189 pages.
Based on the A/D converter of MAX197, its hardware and program referring to: with reference to the chapter 8 of " 51 Single Chip C Language application programming examples are presented briefly and succinctly " (second edition, the permanent Liu Bowen of Dai Jiadaiwei writes Electronic Industry Press), program is with reference to the 139th page.
When the dangerous gtoal setting in the left side being detected, just pin two car doors on the left side, the right thing that is safe from danger is close, and two car doors can opening the right are to be convenient for people to from the direction of safety out.
Working process of the present utility model is as follows:
1. as shown in Figure 4,, after stopping, micro controller system detects the capacitive proximity sensor being contained on car door handle for opening door, judges whether to want door opening.If desired while opening the door, control the ultrasonic probe of the side of need to getting off and rearward launch super sonic, detect the threat at rear; Temperature probe detects air themperature simultaneously, ready for calculating afterwards distance.
2. be reflected back hypracoustic time and air themperature when detecting from transmitting super sonic to receiving rear moving target, just can calculate the distance of rear moving target apart from vehicle according to transit time method, micro controller system calculates after distance, obtain the speed of moving target with the differential circuit differentiate of adjusting the distance again, then micro controller system is obtained time to approach according to distance and speed.
3. had after distance and time to approach, just can judge whether to open the door.Advanced row distance judgement, in the time that the distance obtaining is less than or equal to safety distance, micro controller system switches on to door lock electromagnetic switch 1, makes a maintenance closed condition; In the time that calculated distance is greater than safety distance, then carry out the judgement of time to approach.In the time that the calculated time is less than or equal to safe time to approach, micro controller system switches on to door lock electromagnetic switch 1, makes a maintenance closed condition, in the time that the calculated time is greater than safe time to approach, Single-chip Controlling door lock control circuit is powered to door lock electromagnetic switch 1, makes car door opening, and people goes out safely car.
4. so only in the time reaching safety index apart from discrete time, car door just can be opened, and has greatly improved safety simultaneously.When having one time not up to standard, micro controller system is failure to actuate electromagnetic switch, and controls buzzer phone and telltale warning of hazardous.When a side danger, and while not opening car door, passenger can try to open the car door of opposite side, if it is safe detecting opposite side, just the car door of opposite side can be opened.
Above content is only explanation technological thought of the present utility model; can not limit protection domain of the present utility model with this; every technological thought according to the utility model proposes, any change of doing on technical scheme basis, within all falling into the protection domain of the utility model claims.
Claims (5)
1. a car door opening collision avoidance system, is characterized in that: comprise the range cells that is installed on respectively vehicle rear both sides, the micro controller system that is installed on the door lock unit in car door, the capacitance-type sensor for detection of the action of opening the door, caution system and control coordination whole system; Also comprise the temperature probe that is connected with micro controller system and for calculating the differential circuit of target moving velocity; Range cells, door lock unit, capacitance-type sensor and caution system are all connected with micro controller system; Range cells comprises the ultrasonic control circuit being connected with micro controller system, is connected with ultrasonic ranging probe on ultrasonic control circuit, and ultrasonic ranging probe is provided with two, is installed on respectively the side of vehicle rear steering indicating light.
2. car door opening collision avoidance system according to claim 1, is characterized in that: the quantity of described capacitance-type sensor is identical with car door quantity, is arranged on respectively on the handle for opening door of car door.
3. car door opening collision avoidance system according to claim 2, is characterized in that: described capacitance-type sensor is capacitive proximity sensor.
4. car door opening collision avoidance system according to claim 1, is characterized in that: described door lock unit comprises the door lock control circuit being arranged in car door and is used for controlling the door lock electromagnetic switch (1) that car door opens and closes; Door lock electromagnetic switch (1) is connected with door lock control circuit, and the control signal input end of door lock control circuit is connected with micro controller system.
5. car door opening collision avoidance system according to claim 1, is characterized in that: described caution system comprises the warning circuit and the buzzer phone for the danger signal that gives a warning being connected with warning circuit and the telltale that are connected with micro controller system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320830585.0U CN203766618U (en) | 2013-12-16 | 2013-12-16 | Anti-collision system in car door opening process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320830585.0U CN203766618U (en) | 2013-12-16 | 2013-12-16 | Anti-collision system in car door opening process |
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| Publication Number | Publication Date |
|---|---|
| CN203766618U true CN203766618U (en) | 2014-08-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320830585.0U Expired - Fee Related CN203766618U (en) | 2013-12-16 | 2013-12-16 | Anti-collision system in car door opening process |
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| CN (1) | CN203766618U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453528A (en) * | 2014-12-04 | 2015-03-25 | 贵州大学 | Automatic anti-collision device for automobile door |
| CN104859651A (en) * | 2014-12-16 | 2015-08-26 | 北汽福田汽车股份有限公司 | Danger sounding and preventing method for improving door opening safety after parking |
| CN105507695A (en) * | 2015-12-21 | 2016-04-20 | 周厚文 | Vehicle door lock control system and control method thereof |
| CN105835771A (en) * | 2016-03-29 | 2016-08-10 | 南京工程学院 | Anti-collision pre-warning system and pre-warning method for opening of side doors of car |
| CN106347210A (en) * | 2016-08-31 | 2017-01-25 | 东风汽车公司 | Automobile door-open early-warning system and method |
| CN107284355A (en) * | 2017-06-16 | 2017-10-24 | 长安大学 | A kind of Safety vehicle door opens processing method and system |
| CN108263281A (en) * | 2017-12-28 | 2018-07-10 | 触景无限科技（北京）有限公司 | The processing method and system of preventing car door collision |
| CN109249893A (en) * | 2017-07-13 | 2019-01-22 | 通用汽车环球科技运作有限责任公司 | Vehicle doorn locking system and control logic for passenger's door component |
-
2013
- 2013-12-16 CN CN201320830585.0U patent/CN203766618U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453528A (en) * | 2014-12-04 | 2015-03-25 | 贵州大学 | Automatic anti-collision device for automobile door |
| CN104859651A (en) * | 2014-12-16 | 2015-08-26 | 北汽福田汽车股份有限公司 | Danger sounding and preventing method for improving door opening safety after parking |
| CN105507695A (en) * | 2015-12-21 | 2016-04-20 | 周厚文 | Vehicle door lock control system and control method thereof |
| CN105835771A (en) * | 2016-03-29 | 2016-08-10 | 南京工程学院 | Anti-collision pre-warning system and pre-warning method for opening of side doors of car |
| CN106347210A (en) * | 2016-08-31 | 2017-01-25 | 东风汽车公司 | Automobile door-open early-warning system and method |
| CN107284355A (en) * | 2017-06-16 | 2017-10-24 | 长安大学 | A kind of Safety vehicle door opens processing method and system |
| CN107284355B (en) * | 2017-06-16 | 2019-05-03 | 长安大学 | A kind of Safety vehicle door unlatching processing method and system |
| CN109249893A (en) * | 2017-07-13 | 2019-01-22 | 通用汽车环球科技运作有限责任公司 | Vehicle doorn locking system and control logic for passenger's door component |
| CN109249893B (en) * | 2017-07-13 | 2022-02-25 | 通用汽车环球科技运作有限责任公司 | Vehicle door locking system and control logic for passenger door assembly |
| CN108263281A (en) * | 2017-12-28 | 2018-07-10 | 触景无限科技（北京）有限公司 | The processing method and system of preventing car door collision |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20151216 |
|
| EXPY | Termination of patent right or utility model |