CN202193050U

CN202193050U - Novel anti-collision system

Info

Publication number: CN202193050U
Application number: CN2011202997007U
Authority: CN
Inventors: 胡鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-08-17
Filing date: 2011-08-17
Publication date: 2012-04-18
Anticipated expiration: 2021-08-17

Abstract

The utility model provides a novel anti-collision system integrating satellite positioning, satellite navigation and RFID (radio frequency identification device) technology. The novel anti-collision system comprises a single chip microcomputer control module, a radio frequency communication module, a satellite navigation module, a liquid crystal display module, an acousto-optic alarm module and a voltage-stabilized source module. Mutual communication among moving automobiles can be realized on the basis of the RFID technology and the satellite navigation technology, and the distance among vehicles can be calculated and obtained in real time by informing self accurate geographic information to surrounding vehicles and obtaining the geographic information sent by surrounding moving objects. Compared with the radar ranging method and other realizing methods, the method provided by the system has the advantages of low cost, simple structure, high accuracy and the like, and the system can be applied to different fields of ships, automobiles, trains, high-speed rail, planes and the like.

Description

A kind of later-model collision avoidance system

Technical field

The utility model relates to a kind of a kind of later-model collision avoidance system that integrates satellite positioning, satellite navigation, RFID technology.

Background technology

Current collision avoidance system mainly is to rely on radar to measure the spacing of the place ahead obstacle, and the spacing size judges whether in the hole and in good time warning.If indivedual cases can only system this influence factor of the relative speed of a motor vehicle, alarm decision is more accurate like this, has reduced the situation of flase alarm.

In the collision avoidance system, mainly be to confirm front-and-rear vehicle distance, when hour just warning reminding chaufeur of spacing through radar emission super sonic or infrared ray.Such device only plays suggesting effect under steam automobile to chaufeur, and when automobile has reached near parking when traffic light low speed follows up, just can produce the flase alarm phenomenon.That is to say that such system does not consider the safety distance under the different vehicle speed condition.

The utility model content

The technical matters that the utility model solved is to provide a kind of later-model collision avoidance system, to solve the shortcoming in the above-mentioned background technology.

The technical matters that the utility model solved adopts following technical scheme to realize:

A kind of later-model collision avoidance system; Comprise single chip control module, radio-frequency communication module, satellite navigation module, LCD MODULE, sound and light alarm module and power module of voltage regulation; Wherein, The 5V power supply of power module of voltage regulation for adopting the LM1575 chip that vehicle-mounted 12V power source conversion is become; Single chip control module as control center is 16 micro controller systems of Ling Yang SPEC061A type, realizes that the transmission of data and the radio-frequency communication module of reception are the nRF2401 radio frequency transceiving module, realizes that the satellite navigation module that latitude and longitude coordinates is obtained is the OTrack-32 Big Dipper/GPS/GLONASS multimode compatible navigation chip module; The LCD MODULE that shows spacing detection information in real time is 12864 type LCD display modules, realizes that the sound and light alarm module of sound and light alarm is buzzer phone and LED.Single chip control module is as control center, directly be connected and control with radio-frequency communication module, satellite navigation module, LCD MODULE, sound and light alarm module, by all modules of power module of voltage regulation connection power supply to be provided to system.

Said single chip control module is that model is the microcontroller of 16 bit architectures of SPCE061A, and the Ling Yang micro controller system is a control center, realizes the control to RF receiving and transmission module, satellite navigation module, LCD display module and sound and light alarm.

The nRF2401 chip of said radio-frequency communication module is the monolithic radio transceiver chip of a kind of 2.4GHz of working in, can realize circuit-switched data emission and two paths of data receiving function simultaneously.

Said satellite navigation chip Otrack-32 can receive No. two, the Big Dipper, GPS, GLONASS satellite-signal simultaneously, realizes multisystem combined navigator fix, tests the speed, regularly.

The utility model adopts 12864 dot matrix type LCD display modules, can show relevant informations such as moving vehicle, minor increment, this vehicle longitude and latitude on every side; Adopt a LED and buzzer phone to realize sound and light alarm, use 2 micro controller system output ports to realize control respectively LED and buzzer phone.

During the said system works of the utility model, the chip that navigates at first via satellite obtains the accurate latitude and longitude information of this car, then information is encoded.Coded message mainly comprises this car identification sequence number, latitude and longitude information and the speed of a motor vehicle.Behind the completion information coding, coded message is sent through passage 1 information of carrying out of RF receiving and transmission module, receiver address should be set to unified public address, and the design is defined as 5 hexadecimal address: 0xAAAAA.Adopt passage 2 to receive the information that surrounding vehicles is sent simultaneously, the information that receives is sent to micro controller system handle.

When receiving information that a plurality of radio-frequency modules send simultaneously and communication collision occurs, adopt the RFID anti-collision algorithm to handle.Micro controller system constantly receives vehicle identification sequence number, latitude and longitude information and the speed of a motor vehicle from RF receiving and transmission module, and according to the vehicle sequence number these information is carried out the data structure queue order and handle.

Obtain the travel direction and the spacing of each car on every side in real time through automobile ranging and range rate algorithm and vehicle traveling direction decision algorithm.The surrounding vehicles spacing speed of a motor vehicle is contrasted with the cooresponding safe distance between vehicles of the different speed of a motor vehicle, when automobile interior apart from less than safety distance the time, report to the police to chaufeur through sound and light.

The principle of the described system of the utility model is:

If the information spinner latitude and longitude information that the ranging and range rate algorithm model is a RF receiving and transmission module to receive, system carries out dynamic handling through the real-time latitude and longitude information to these information and Ben Che, can obtain each up-to-date spacing information constantly.At first pair warp and weft degree information is carried out formal definition.Definition latitude information north latitude is " just (+) ", and south latitude is " negative (-) "; The longitude information east longitude is " just (+) ", and west longitude is " negative (-) ".The about 40008km of the girth of the earth.Then mean latitude 1 degree approximates 111km greatly.The latitude and longitude information precision that native system collects is 0.0001, and on behalf of distance, then per ten thousand/unit be approximately equal to 11.1m, can satisfy the system accuracy demand.So, can get the model of generally finding range:

S = \sqrt{{[(E_{2} - E_{1}) a]}^{2} {[(W_{2} - W_{1}) a]}^{2}}

Wherein, E1 and E2 represent the longitude information of this car and other vehicles respectively, and W1 and W2 represent the latitude information of this car and other vehicles respectively, and a representes that longitude and latitude represents length for 1 °, about 1.11 * 105m.For extraordinary circumstances,, need to convert and handle at the computing degree of passing through that advances for example in 180 ° of east longitudes and 180 ° of border region of west longitude.The calculating of this car speed of a motor vehicle can be used twice longitude and latitude that above-mentioned range finding model records this car and calculate vehicle miles of relative movement in the satellite navigation chip longitude and latitude scanning period T, thereby drawn speed of a motor vehicle v.

Its latitude and longitude information matrix of establishing certain a plurality of moment of car of vehicle moving direction decision model is respectively [A1, B1], [A2, B2] ... [An, Bn] through judging the positive and negative of [An, Bn], and compares with the value of [An-1, Bn-1], can judge its travel direction roughly.Use the matrix representation vehicle traveling direction, wherein E, W, S, N represent the East, West, South, North direction respectively.If the direction that automobile drives towards is 1, direction is identical if other automobiles and this car go, and the go matrix of direction of acute pyogenic infection of finger tip two cars is subtracted each other, and can obtain null matrix.Through null matrix is differentiated, can know the relative travel direction of automobile and this car on every side roughly, also can learn the orientation of automobile before and after this car on every side.

Beneficial effect: the utility model realizes moving the intercommunication mutually between the automobile based on RFID and satellite navigation technology; Through the accurate geography information of vehicle report towards periphery self; And obtain the geography information that moving target on every side sends, and to calculate in real time and obtain the distance between the vehicle, other implementation methods such as system approach and radar ranging are compared; Have that cost is low, simple in structure, the precision advantages of higher, applicable to different fields such as steamer, automobile, train, high ferro, aircrafts.

Description of drawings

Fig. 1 is the scheme drawing of the utility model preferred embodiment.

The specific embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.

A kind of later-model collision avoidance system referring to Fig. 1; Comprise single chip control module, radio-frequency communication module, satellite navigation module, LCD MODULE, sound and light alarm module and power module of voltage regulation; Adopting the LM1575 chip is the 5V power supply with vehicle-mounted 12V power source conversion; With 16 micro controller systems of Ling Yang SPCE061A type is control center, uses the nRF2401 radio frequency transceiving module to realize the transmission and the reception of data, uses the OTrack-32 Big Dipper/GPS/GLONASS multimode compatible navigation chip module to realize obtaining of latitude and longitude coordinates; Use 12864 type LCD display modules to show that in real time spacing detects information simultaneously, and use buzzer phone and LED to realize sound and light alarm.

When spacing is nearer,, make combined aural and visual alarm work through the micro controller system output signal.Native system adopts a LED and buzzer phone to realize sound and light alarm, uses 2 micro controller system output ports to realize the control to LED and buzzer phone respectively.

During system works, at first carry out System self-test and initialization setting, and show " welcoming to use " interface through the LCD module.Navigation module receives latitude and longitude information and is input to micro controller system via satellite then; Micro controller system is through the control RF receiving and transmission module; Adopt the passage 1 of nRF2401 module to send latitude and longitude information; Adopt passage 2 latitude and longitude information around receiving simultaneously, and the latitude and longitude information of the surrounding vehicles that receives is input to micro controller system handles.

Longitude and latitude by two cars goes out the distance between two cars through the ranging and range rate Model Calculation; And two car spacings and safety distance are compared, if spacing less than safety distance, is judged the relative travel direction and the front and back position of vehicle; If in the same way and less than safety distance; Then Single-chip Controlling LED lamp flicker, the flicker frequency of the more little LED lamp of distance is fast more, controls the buzzer phone warning of sounding simultaneously.

More than show and described the advantage of groundwork, principal character and the utility model of the utility model.The technical personnel of the industry should be understood; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification sheets that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.

Claims

1. later-model collision avoidance system; Comprise single chip control module, radio-frequency communication module, satellite navigation module, LCD MODULE, sound and light alarm module and power module of voltage regulation; It is characterized in that; The 5V power supply of power module of voltage regulation for adopting the LM1575 chip that vehicle-mounted 12V power source conversion is become; Single chip control module as control center is 16 micro controller systems of Ling Yang SPEC061A type, realizes that the transmission of data and the radio-frequency communication module of reception are the nRF2401 radio frequency transceiving module, realizes that the satellite navigation module that latitude and longitude coordinates is obtained is the OTrack-32 Big Dipper/GPS/GLONASS multimode compatible navigation chip module; The LCD MODULE that shows spacing detection information in real time is 12864 type LCD display modules; The sound and light alarm module that realizes sound and light alarm is buzzer phone and LED, and wherein, single chip control module is as control center; Directly be connected and control, by all modules of power module of voltage regulation connection with radio-frequency communication module, satellite navigation module, LCD MODULE, sound and light alarm module.