CN106448147B - Pedestrian anti-collision intelligent early warning system based on mobile terminal - Google Patents
Pedestrian anti-collision intelligent early warning system based on mobile terminal Download PDFInfo
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- CN106448147B CN106448147B CN201611073762.XA CN201611073762A CN106448147B CN 106448147 B CN106448147 B CN 106448147B CN 201611073762 A CN201611073762 A CN 201611073762A CN 106448147 B CN106448147 B CN 106448147B
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- rotating shaft
- mobile phone
- ball
- spherical
- early warning
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/005—Traffic control systems for road vehicles including pedestrian guidance indicator
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/16—Anti-collision systems
- G08G1/166—Anti-collision systems for active traffic, e.g. moving vehicles, pedestrians, bikes
Abstract
The invention discloses a pedestrian anti-collision intelligent early warning system based on a mobile terminal. The hardware comprises a mobile phone base body, a transparent shell, a rotating shaft, a ball, a distance sensor, a gravity center block, an MCU, a loudspeaker and a vibration motor; the transparent shell is a rectangular body and is arranged at the top of the mobile phone base body, a spherical hollow space is arranged in the transparent shell, and an annular track is processed along the inner wall of the spherical space; the rotating shaft is in a needle shape, round heads at two ends are embedded into the annular track and rotate along the annular track; the sphere is spherical, a rotating shaft mounting hole is formed in the horizontal direction, a distance sensor is mounted in the front of the sphere, and a gravity center block is arranged at the bottom of the sphere; the rotating shaft penetrates through a rotating shaft mounting hole in the ball, and the ball can rotate around the rotating shaft; MCU and vibrating motor install in the cell-phone mainboard, and the speaker is installed on the shell of cell-phone. When a lower head race walks on a road and a vehicle comes in front of the lower head race, the mobile phone loudspeaker immediately gives out a warning sound for paying attention to the vehicle, and meanwhile, the vibration motor vibrates to remind pedestrians of paying attention to safety.
Description
Technical Field
The invention relates to the field of intelligent traffic device systems, in particular to a pedestrian anti-collision intelligent early warning system based on a mobile terminal.
Background
The technology is a handle double-edged sword, which is common knowledge without reiteration. After the popularization of the mobile phone, the mobile phone has evolved from a pure communication tool to a mental partner. In popular terms, people have developed deep dependence on tools as the technology is kidnapped on people. The dependence of the mobile phone is only the miniature of various tool dependence symptoms in the modern society, many people are drowned in television programs, can not write after leaving a keyboard, are used to replace walking by vehicles, and the like, and the traditional life of people is changed by a new technology.
The intelligent joining recruitment publishes a survey on the mobile phone use indexes of 28 major urban white-collar workers, wherein the Beijing white-collar workers use the mobile phone for the longest time, the average time is 6.72 hours per day, the lowest Guangzhou white-collar workers also have 4.9 hours per day, and the mobile phone keeps 24-hour telephone communication and mobile phone software communication for working in the industries of public customs, marketing and the like.
Survey data of a traffic management information platform shows that four traffic accidents are related to the condition that pedestrians look down at a mobile phone at present, 11% of people who hand the mobile phone on a road listen to music, 7% of people send information and 8% of people talk. The probability of collision accidents of people watching the mobile phone is four times that of ordinary people, and the time for crossing a road is 2 to 10 seconds more than that of normal people.
Throughout every major technological revolution of the world history, people's lives are subject to a skyrocketing change. In the face of new problems brought by technical revolution, many people can make a criticism on emerging technologies and try to restore the original social appearance, but all fail. These histories have been used to tell people that, in the course of the development of human society, thinking about and proposing solutions to new problems, which are the only things that people need to do, following the development of the times.
The invention relates to a novel device which is not needed by people and is always used with a mobile phone, so that the novel device is preferably integrated with the mobile phone; when people use the mobile phone, the mobile phone continuously moves and changes the inclination angle, and the new scheme can keep the function of monitoring the vehicle at any angle of the mobile phone; the static vehicle does not cause harm to people, so the monitoring object of the new scheme is a moving object. If the pedestrian anti-collision intelligent early warning system can be applied, the system plays an important role in promoting the development of intelligent traffic science and technology, and has important significance in reducing traffic accidents and further guaranteeing the life and property safety of people.
Disclosure of Invention
Therefore, in order to protect the life safety of the head-lowering people, the invention provides the pedestrian anti-collision intelligent early warning system based on the mobile terminal, which can accurately capture objects moving towards the mobile phone quickly, and meanwhile, the mobile phone sends out early warning prompt tone and vibration to remind people who are looking at the mobile phone at the head to improve the vigilance and avoid traffic accidents caused by collision.
The invention provides a pedestrian anti-collision intelligent early warning system based on a mobile terminal.
The transparent shell is a rectangular body and is arranged at the top of the mobile phone, a spherical hollow space is arranged inside the transparent shell, and an annular track is processed along the inner wall of the spherical hollow space and parallel to the transverse surface of the mobile phone.
The pivot appearance is needle-like, and both ends all are equipped with the button head, in the annular orbit in the button head embedding transparent shell, button head and annular orbit are clearance fit, and rotary motion can be along annular orbit to the pivot, can encircle the axis rotation of pivot simultaneously.
The ball is spherical, a rotating shaft mounting hole is formed in the horizontal left-right direction, the distance sensor is mounted in the front of the ball, and the gravity center block is arranged at the bottom of the ball. The rotating shaft penetrates through a rotating shaft mounting hole in the ball, the rotating shaft mounting hole is in clearance fit with the rotating shaft, and the ball can rotate around the rotating shaft.
The MCU and the vibrating motor are installed in a mobile phone mainboard, and the loudspeaker is installed on a shell of the mobile phone.
When the lower head family walks on the road and a vehicle comes in front, the mobile phone loudspeaker immediately gives out a warning sound for paying attention to the vehicle, and the vibration motor vibrates simultaneously so as to remind the lower head family to pay attention to safety.
The principle of the invention is as follows:
the gravity center of the ball is centralized on the gravity center block at the bottom, the ball is supposed to be placed on a horizontal plane, only the freedom degree in the vertical direction is limited, and the gravity center block is always positioned below the ball without limitation, so that the distance from the axis of the sensor is kept horizontal.
The tilting action of the mobile phone can be decomposed into front and back tilting and left and right tilting:
when the mobile phone is inclined forwards and backwards, the sphere rotates around the rotating shaft under the action of the gravity center block, and the distance sensor is always horizontally forwards.
When the mobile phone is inclined left and right, the force exerted on the rotating shaft by the spherical ball is always positioned in the middle of the rotating shaft due to the gravity center block, so that the rotating shaft can rotate in the annular track to keep balance, and the rotating shaft is always kept horizontal.
The rotating shaft is in clearance fit with the annular track so as to increase the degree of freedom of the rotating shaft and further enhance the flexibility of the round ball.
The light emitted by the distance sensor passes through the transparent shell and is emitted to the vehicle in front of the low head family, and finally the light is reflected back to the distance sensor, so that the distance between the low head family and the vehicle in front can be measured. At certain time intervals, the distance between the head-lowering family and the front vehicle is measured again by the same principle. According to the two distance changes, the running speed of the front vehicle can be calculated. When the MCU judges that the driving speed of the vehicle can threaten people, the loudspeaker is controlled to give out prompt tones, and the vibration motor is controlled to give out vibration to remind people to pay attention.
The invention has the beneficial effects that:
(1) By utilizing the tumbler principle, the distance sensor is kept horizontally forward under the condition that the mobile phone jolts;
(2) The spherical degree of freedom is maximized by utilizing a matching structure of the rotating shaft and the annular track;
(3) And converting the distance measurement and the time difference into the speed measurement of the moving object.
Therefore, the pedestrian anti-collision intelligent early warning system based on the mobile terminal can effectively monitor the threat of coming vehicles in front of the lower head, reasonably judge and early warn the acquired data, effectively prevent and reduce the occurrence of traffic accidents, and has important significance for promoting intelligent traffic development and further ensuring the safety of lives and properties of people.
Additional features and advantages of the invention will be set forth in the description which follows, or may be learned by practice of the invention.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention.
Fig. 1 is a schematic external view of the assembly of the transparent case and the handset base according to the present invention.
Fig. 2 is a partially enlarged view of the assembly of the transparent case and the base of the cellular phone according to the present invention.
Fig. 3 isbase:Sub>A schematic view showing the position ofbase:Sub>A sectional linebase:Sub>A-base:Sub>A along the longitudinal symmetry plane of the transparent casing in the present invention.
FIG. 4 is an assembly view of the transparent shell, the rotating shaft and the sphere according to the sectional line A-A of the present invention.
Fig. 5 is an internal structure view of the transparent case according to the sectional linebase:Sub>A-base:Sub>A in the present invention.
FIG. 6 is a schematic view of the position of a sectional line B-B along the transverse symmetry plane of the transparent casing according to the present invention.
FIG. 7 is an assembly view of the transparent housing and the shaft of the present invention as viewed along section line B-B.
FIG. 8 is an assembly view of the transparent shell, the rotating shaft and the sphere according to the view of the section line B-B in the present invention.
Fig. 9 is a schematic structural view of the rotating shaft of the present invention.
Fig. 10 is a schematic view of the structure of the ball of the present invention.
Fig. 11 is a schematic view of the connection of the elements of the present invention.
Fig. 12 is a control principle flow chart of the present invention.
The reference numbers in the figures: 1-a mobile phone base body, 2-a transparent shell, 21-a circular track, 3-a rotating shaft, 31-a round head of the rotating shaft, 4-a sphere, 41-a rotating shaft mounting hole, 5-a distance sensor and 6-a gravity center block.
Detailed Description
The pedestrian collision-prevention intelligent early warning system based on the mobile terminal is further described in detail with reference to the accompanying drawings.
The utility model provides a pedestrian anticollision intelligence early warning system based on mobile terminal, its hardware mainly includes: the mobile phone comprises a mobile phone base body 1, a transparent shell 2, a rotating shaft 3, a sphere 4, a distance sensor 5, a gravity center block 6, an MCU, a loudspeaker and a vibrating motor.
The transparent shell 2 is a rectangular body and is arranged at the top of the mobile phone base body 1, a spherical hollow space is arranged inside the transparent shell, and an annular track 21 is processed along the inner wall of the spherical hollow space and parallel to the transverse plane of the mobile phone.
Furthermore, the transparent shell 2 is made of polyhydroxyethylmethacrylate (HEMA), the light transmittance and the refractive index are close to air, and the influence of the material on light transmission is reduced to the maximum extent.
The appearance of pivot 3 is the needle-like, and both ends all are equipped with button head 31, and in the annular orbit 21 in the button head 31 embedding transparent casing, button head 31 and annular orbit 21 are clearance fit, and rotary motion can be along annular orbit 21 to pivot 3, can encircle the axis rotation of pivot 3 simultaneously.
Further, the round heads 31 at the two ends of the rotating shaft 3 are spherical, and the spherical diameter is larger than the middle needle-shaped shaft diameter of the rotating shaft 3.
The ball 4 is spherical, a rotating shaft mounting hole 41 is formed in the horizontal left-right direction, a distance sensor 5 is mounted in the front of the ball, and a gravity center block 6 is arranged at the bottom of the ball. The rotating shaft 3 passes through a rotating shaft mounting hole 41 on the round ball 4, the rotating shaft mounting hole 41 is in clearance fit with the rotating shaft 3, and the round ball 4 can rotate around the rotating shaft 3.
Further, the round ball 4 is made of resin, the distribution of the internal material is not uniform in density, and after the distance sensor 5 is mounted on the round ball 4, the axis of the distance sensor 5 can be kept horizontal when the round ball 4 is in a flat state.
Further, the center of gravity block 6 is made of a resin shell of the spherical ball 4, and the inside thereof is filled with lead as a filler.
Further, the distance sensor 5 is an infrared distance sensor, includes an infrared emitting element and an infrared receiving element, and is communicated with the MCU through an a/D conversion circuit.
The MCU and the vibrating motor are installed in a mobile phone mainboard, and the loudspeaker is installed on a shell of the mobile phone.
When the lower head family walks on the road and a vehicle comes in front of the lower head family, the mobile phone loudspeaker immediately gives out a warning sound for paying attention to the vehicle, and the vibration motor vibrates so as to remind the lower head family to pay attention to safety.
The gravity center of the ball 4 is concentrated on the gravity center block 6 at the bottom, and if the ball 4 is placed on a horizontal plane, only the freedom degree in the vertical direction is limited, and after the ball is stable without limitation, the gravity center block 6 is always below the ball 4, so that the axis of the distance sensor 5 is kept horizontal.
The tilting action of the mobile phone can be decomposed into front-back tilting and left-right tilting:
when the mobile phone is inclined forwards and backwards, the spherical ball 4 rotates around the rotating shaft 3 under the action of the gravity center block 6, and the gravity center block 6 is always below, so that the distance sensor 5 is always horizontally forwards.
When the mobile phone is inclined leftwards and rightwards, the force exerted on the rotating shaft 3 by the spherical ball 4 is always positioned in the middle position of the rotating shaft 3 due to the action of the gravity center block 6, so that the rotating shaft 3 can rotate in the annular track 21 to keep balance, and the rotating shaft 3 is always kept horizontal.
The shaft 3 is in clearance fit with the annular track 21 to increase the degree of freedom of the shaft 3, and further enhance the flexibility of the ball 4.
The light emitted by the distance sensor 5 passes through the transparent shell 2 and is emitted to the vehicle in front of the low head family, and finally the light is reflected back to the distance sensor 5, so that the distance between the low head family and the vehicle in front can be measured. At certain intervals, the distance between the head lowering family and the front vehicle is measured again by the same principle. According to the change of the distance twice, the running speed of the front vehicle can be calculated.
Assuming that the time when the previous distance sensor 5 emits the infrared ray is t1, the time when the previous distance sensor 5 receives the infrared ray is t2, and the propagation speed of the infrared ray is v0, the distance L1= v (t 2-t 1)/2 between the distance sensor 5 and the vehicle;
assuming that the time when the distance sensor 5 emits infrared rays next time is t3, the time when the infrared rays are received is t4, and the propagation speed of the infrared rays is v0, the distance L2= v × (t 4-t 3)/2 between the distance sensor 5 and the vehicle;
then the relative speed v = (L1-L2)/(t 4-t 2) of vehicle and person.
When the MCU judges that the driving speed of the vehicle can threaten people, the loudspeaker is controlled to give out prompt sound, and the vibration motor is controlled to give out vibration to remind people to pay attention.
The audio frequency of "paying attention to the vehicle" has been stored in advance in the memory of speaker, and MCU passes through intermediate relay control speaker and vibrating motor circular telegram and starts, and MCU is judging that the car that comes can cause the threat back to people, and certain pin is put through to intermediate relay's coil circular telegram, and intermediate relay is normally open relay switch, and the coil circular telegram back switch is closed, puts through the power of speaker, and the speaker sends out the prompt tone after starting. On the same principle, the MCU controls the vibration motor to start through the intermediate relay, and because vibration can attract the attention of a mobile phone user more than sound when people are on a noisy road.
In the present invention, the a/D converter is an analog signal and digital signal converter, and the MCU is a single-chip microcomputer that is an integrated chip integrating an internal processor (CPU), a memory (RAM, ROM), a counter, and an I/O port.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (6)
1. A pedestrian anti-collision intelligent early warning system based on a mobile terminal is characterized in that hardware comprises a mobile phone base body (1), a transparent shell (2), a rotating shaft (3), a ball (4), a distance sensor (5), a gravity center block (6), an MCU (microprogrammed control unit), a loudspeaker and a vibrating motor;
the transparent shell (2) is a rectangular body and is arranged at the top of the mobile phone base body (1), a spherical hollow space is arranged inside the transparent shell, and an annular track (21) is processed along the inner wall of the spherical hollow space and parallel to the transverse plane of the mobile phone;
the appearance of the rotating shaft (3) is needle-shaped, round heads (31) are arranged at two ends of the rotating shaft, the round heads (31) are embedded into the annular track (21) in the transparent shell, the round heads (31) are in clearance fit with the annular track (21), and the rotating shaft (3) can rotate along the annular track (21) and can rotate around the axis of the rotating shaft (3);
the spherical ball (4) is spherical, a rotating shaft mounting hole (41) is formed in the horizontal left-right direction, a distance sensor (5) is mounted in the front of the spherical ball, and a gravity center block (6) is arranged at the bottom of the spherical ball; the rotating shaft (3) penetrates through a rotating shaft mounting hole (41) in the round ball (4), the rotating shaft mounting hole (41) is in clearance fit with the rotating shaft (3), and the round ball (4) can rotate around the rotating shaft (3);
the MCU and the vibrating motor are installed in a mobile phone mainboard, and the loudspeaker is installed on a shell of the mobile phone.
2. The pedestrian collision-prevention intelligent early warning system based on the mobile terminal as claimed in claim 1, wherein the transparent shell (2) is made of poly (hydroxyethyl methacrylate).
3. The pedestrian anti-collision intelligent early warning system based on the mobile terminal according to claim 1, wherein the round heads (31) at the two ends of the rotating shaft (3) are spherical, and the spherical diameter of the round heads is larger than the middle needle-shaped shaft diameter of the rotating shaft (3).
4. The pedestrian anti-collision intelligent early warning system based on the mobile terminal as claimed in claim 1, wherein the gravity center block (6) utilizes a resin shell of a round ball (4), and the inside of the gravity center block is filled with lead as a filler.
5. The pedestrian collision-prevention intelligent early warning system based on the mobile terminal according to claim 1 or 4, wherein the distance sensor (5) is an infrared distance sensor.
6. The pedestrian anti-collision intelligent early warning system based on the mobile terminal according to claim 1, wherein the memory of the speaker is pre-stored with audio of 'attention to vehicles', the MCU controls the speaker and the vibration motor to be powered on and started through an intermediate relay, the MCU switches on a pin after judging that the coming vehicle threatens people, a coil of the intermediate relay is powered on, the intermediate relay is a normally open relay switch, the switch is closed after the coil is powered on, the power supply of the speaker is switched on, and the speaker sends out a prompt tone after being started; and on the same principle, the MCU controls the vibration motor to start through the intermediate relay.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611073762.XA CN106448147B (en) | 2016-11-29 | 2016-11-29 | Pedestrian anti-collision intelligent early warning system based on mobile terminal |
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| CN201611073762.XA CN106448147B (en) | 2016-11-29 | 2016-11-29 | Pedestrian anti-collision intelligent early warning system based on mobile terminal |
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| CN106448147A CN106448147A (en) | 2017-02-22 |
| CN106448147B true CN106448147B (en) | 2023-03-03 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109887334A (en) * | 2017-12-01 | 2019-06-14 | 奥迪股份公司 | Vehicle drive assist system and method |
| CN109285450A (en) * | 2018-11-29 | 2019-01-29 | 江苏海事职业技术学院 | A kind of smart electronics seat card of the exhibitions conference service based on WiFi |
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| CA2311504A1 (en) * | 1999-06-15 | 2000-12-15 | Universite De Sherbrooke | Robot ball |
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| JP5866746B1 (en) * | 2015-03-26 | 2016-02-17 | 株式会社エコ・インフィニティ | Rotating device for power generator |
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| DE102008002322A1 (en) * | 2008-06-10 | 2009-12-17 | Robert Bosch Gmbh | Portable device with warning system and method |
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|---|---|---|---|---|
| GB221006A (en) * | 1923-06-01 | 1924-09-01 | James Gordon Gray | Improvements in or relating to gyroscopic apparatus |
| GB1228468A (en) * | 1968-07-11 | 1971-04-15 | ||
| CA2311504A1 (en) * | 1999-06-15 | 2000-12-15 | Universite De Sherbrooke | Robot ball |
| JP2006174288A (en) * | 2004-12-17 | 2006-06-29 | Sharp Corp | Mobile terminal apparatus, collision avoidance method, collision avoidance program and recording medium |
| EP2846172A1 (en) * | 2013-09-09 | 2015-03-11 | Nxp B.V. | Warning system and method |
| JP5866746B1 (en) * | 2015-03-26 | 2016-02-17 | 株式会社エコ・インフィニティ | Rotating device for power generator |
| CN105511614A (en) * | 2015-12-02 | 2016-04-20 | 广东小天才科技有限公司 | Anti-collision method and anti-collision device for mobile terminal |
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