CN206671570U - A kind of vehicle active safety early warning system - Google Patents
A kind of vehicle active safety early warning system Download PDFInfo
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- CN206671570U CN206671570U CN201720286053.3U CN201720286053U CN206671570U CN 206671570 U CN206671570 U CN 206671570U CN 201720286053 U CN201720286053 U CN 201720286053U CN 206671570 U CN206671570 U CN 206671570U
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- 238000011161 development Methods 0.000 claims abstract description 16
- 238000004891 communication Methods 0.000 claims abstract description 10
- 238000012545 processing Methods 0.000 claims description 6
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- 238000005516 engineering process Methods 0.000 description 5
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- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The utility model discloses a kind of vehicle active safety early warning system,A car-mounted device is respectively mounted on each vehicle,The car-mounted device includes Android development boards,The Big Dipper/GPS dual-mode formula positioner,APP clients,Zigbee communication device and vehicle bus,The Android development boards establish the interface having with zigbee communicators and the Big Dipper/GPS dual-mode formula positioner by serial ports,The position of collection vehicle,Speed and direction,The Zigbee communication device is used for sending the position of itself,Speed and directional information,It is also used for receiving the same type information of other vehicles,The Big Dipper/GPS dual-mode formula positioner is used for being accurately positioned vehicle location,Obtain positional information,The APP clients are used for the information for showing the collection of Android development boards,It can effectively avoid speed too fast,Vehicle is excessively near and traffic light-free intersection etc. caused by car accident.
Description
Technical field
The utility model belongs to vehicle early warning technical field, is related to a kind of safety pre-warning system, and in particular to a kind of vehicle
Active safety early warning system.
Background technology
Current vehicle active safety technologies mainly include tire pressure monitoring, anti-lock, polling power controlling, blind area monitoring and
Radar range finding etc., active safety technologies are also in individual closed system, communication and collaboration between no vehicle.Car networking technology
Rise, bring new opportunity to develop for vehicle active safety, much researched and proposed the active safety side based on vehicle communication
Case.But the problems such as system is excessively complicated, and application is not high, positioning precision deficiency and shortage software kit mostly be present.This hair
Bright software and hardware combining, it is simple in construction, it is easy to integrate with current Vehicle manufacturers.
Utility model content
According to above the deficiencies in the prior art, technical problem to be solved in the utility model is to propose a kind of vehicle actively
Safety pre-warning system, using double mode alignment system, the satellite from two kinds of frequencies of the Big Dipper and GPS is received by UM220 terminals
Signal, it can both be positioned with the Big Dipper or GPS single systems, and Big Dipper signal can not be received in system with the Big Dipper and GPS alignment by union again
Or during GPS signals, positioned using single system,, can be effective using alignment by union when two kinds of signals can be received
Avoid that speed is too fast, vehicle is excessively near and traffic light-free intersection etc. caused by car accident.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：
A kind of vehicle active safety early warning system, a car-mounted device, the car-mounted device are respectively mounted on each vehicle
Including Android development boards, the Big Dipper/GPS dual-mode formula positioner, APP clients, Zigbee communication device and vehicle bus,
The Android development boards are established by serial ports to have and connect with zigbee communicators and the Big Dipper/GPS dual-mode formula positioner
Mouthful, position, speed and the direction of collection vehicle, the Zigbee communication device are used for sending position, speed and the side of itself
To information, it is also used for receiving the same type information of other vehicles, the Big Dipper/GPS dual-mode formula positioner is used for accurate fixed
Position vehicle location, obtains positional information, and the APP clients are used for the information for showing the collection of Android development boards；
The Android development boards include Android embedded OSs and Google Map electronic maps, described
Google Map electronic maps are connected to the api interface of Android embedded OSs, the Android embedded operations
System also includes velocity sensor and direction inductor device, is respectively used to detect car speed and direction.
As a kind of preferable technical scheme of the utility model, the Big Dipper/GPS dual-mode formula positioner is controlled including ground
Center, big-dipper satellite, GPS and user terminal processed, big-dipper satellite and GPS defending two kinds of frequencies are controlled by ground control centre
Star signal is transmitted to user terminal.
As a kind of preferable technical scheme of the utility model, the coding of two kinds of alignment systems of big-dipper satellite and GPS
Mode is identical, is all to use CDMA coded system.
As a kind of preferable technical scheme of the utility model, the user terminal is received from north using UM220 terminals
The satellite-signal for the two kinds of frequencies of satellite and GPS that struggle against, it can both be positioned with the Big Dipper or GPS single systems, again can be fixed with the Big Dipper and GPS joints
Position.
As a kind of preferable technical scheme of the utility model, the UM220 terminals use BBP, the base band
Processor periphery provided RF input interfaces and receives satellite-signal, and was filtered processing, filtered place by SAW filter circuits
After reason, then by RF front ends to BBP.
The utility model beneficial effect is：The utility model uses double mode alignment system, by UM220 terminals receive come
From the satellite-signal of two kinds of frequencies of the Big Dipper and GPS, can both be positioned with the Big Dipper or GPS single systems, again can be fixed with the Big Dipper and GPS joints
Position, when system does not receive Big Dipper signal or gps signal, is positioned using single system, when can receive two kinds of signals
When, using alignment by union, can effectively avoid that speed is too fast, vehicle is excessively near and traffic light-free intersection etc. caused by hit
Car accident.
Brief description of the drawings
The content expressed by this specification accompanying drawing and the mark in figure are briefly described below：
Fig. 1 is the utility model structure diagram；
Fig. 2 is the structural representation of the utility model Big Dipper/GPS dual-mode formula positioner；
In figure：1-Android development boards；The 2- Big Dippeves/GPS dual-mode formula positioner；3-APP clients；4-Zigbee leads to
T unit；5- ground control centres；6- big-dipper satellites；7-GPS；8- user terminals；9-RF input interfaces；10-SAW filtered electricals
Road；11-RF front ends；12- BBPs.
Embodiment
Below against accompanying drawing, by the description to embodiment, for example involved each of specific embodiment of the present utility model
Mutual alignment and annexation, the effect of each several part and operation principle, manufacture work between the shape of component, construction, each several part
Skill and operate with method etc., are described in further detail, to help those skilled in the art to practicality of the present utility model
New design, technical scheme have more complete, accurate and deep understanding.
Fig. 1 and Fig. 2 are referred to, the utility model provides a kind of technical scheme：
A kind of vehicle active safety early warning system, a car-mounted device, the car-mounted device are respectively mounted on each vehicle
It is described including Android development boards 1, the Big Dipper/GPS dual-mode formula positioner 2, APP clients 3 and Zigbee communication device 4
Android development boards 1 are established by serial ports to have and connect with zigbee communicators 4 and the Big Dipper/GPS dual-mode formula positioner 2
Mouthful, position, speed and the direction of collection vehicle, the Zigbee communication device 4 are used for sending position, speed and the side of itself
To information, it is also used for receiving the same type information of other vehicles, the Big Dipper/GPS dual-mode formula positioner 2 is used for accurate fixed
Position vehicle location, obtains positional information, and the APP clients 3 are used for the information for showing the collection of Android development boards；
The Android development boards 1 include Android embedded OSs and Google Map electronic maps, described
Google Map electronic maps are connected to the api interface of Android embedded OSs, the Android embedded operations
System also includes velocity sensor and direction inductor device, is respectively used to detect car speed and direction.
The AO] concrete applications of PP clients shows including vehicle map, position, the speed of itself and other vehicles
The display of the information such as degree, direction, interface early warning etc..The reaction time that driver is notified information is 1.7s, system processing time
0.3s and message send time 0.1s, and the braking deceleration a of two cars is 3.6m/s2, specific warning algorithm includes： (1)
When in the same direction, it is assumed that the distance of two cars is d (passing through location Calculation), and speed is respectively and V1And V2 d<|t1-t2|×(1.7+
0.3+0.1) then carry out collision warning
(2) intersect when, it is assumed that two cars speed be respectively and V1And V2The distance that plotted point is reached with, two cars is respectively：
d1=V1×t1-at1 2/2
d2=V2×t2-at2 2/2
Distance can determine that reaching the time of plotted point can try to achieve in map, if | t1-t2|<4s, then carry out collision report
It is alert.
The Big Dipper/GPS dual-mode formula positioner 2 includes ground control centre 5, big-dipper satellite 6, GPS7 and user terminal
8, big-dipper satellite 6 and GPS7 are controlled by the satellite signal transit of two kinds of frequencies to user terminal 8 by ground control centre 5；Institute
It is identical to state the coded system of two kinds of alignment systems of big-dipper satellite 6 and GPS7, is all to use CDMA coded system；The user
Terminal 8 receives the satellite-signal from two kinds of frequencies of big-dipper satellite 6 and GPS7 using UM220 terminals, both can be with the Big Dipper or GPS
Single system positions, again can be with the Big Dipper and GPS alignment by union.
Although big-dipper satellite and GPS are different two systems, but still have many general character between them, and this just can for them
Foundation is provided with compatible Modular Navigation System in pairs, the composition of two systems is identical, is all by space segment, the control of ground center
System processed, user terminal composition, positioning principle is identical, be all that it is fixed to calculate by measuring the pseudorange between user and satellite
Position result, the frequency of carrier signal of transmission is close, and triones navigation system is respectively in 1159~1610MHz, 1209~1300MHz two
Individual frequency range sends radio carrier signals, and GPS then sends signal in 1575MHz and 1227MHz.
The general principle of Big Dipper positioning：Triones navigation system has the three big of fast positioning, short communication and accurate time transmission
Function, intersect survey star principle using 3 balls and positioned, respectively using 2 position location satellites and the earth's core as the centre of sphere, when user positions,
Need to send the information for applying for service to two satellites, the application information of user is forwarded to ground control centre, ground by satellite again
Face control centre demodulates subscriber signal, and calculates user to the distance of this two satellites；Using this two satellites as the centre of sphere, arrive
The distance of user is that radius makees two spheres, because satellite orbit face overlaps with the equatorial plane, so user must intersect in sphere
Circle on, and intersecting circle and the equatorial plane are vertical.Again using the earth's core as the centre of sphere, to earth surface highly for radius obtain one it is non-homogeneous
Sphere, the sphere and intersecting circle respectively have an intersection point in Southern And Northern Hemispheres of The Earth, and China is in the Northern Hemisphere, so the friendship in the Northern Hemisphere
Point is the position of user.The three-dimensional coordinate of user is thus calculated, ground control centre leads to the coordinate information calculated
Cross satellite and be transmitted to user.
The UM220 terminals use BBP 12, and the periphery of BBP 12 provided RF input interfaces 9 and connect
Satellite-signal is received, and processing is filtered by SAW filter circuits 10, after filtered processing, then by RF front ends 11 to base band
Processor 12；By the Data Format Transform of the Big Dipper signal received into gps data form during alignment by union, with Beidou navigation system
The output of system directly corrects the output of GPS systems.Module is mixed by correlator, Fast Fourier Transform (FFT) FFT and matched filter
Using and algorithm optimization, system is kept outstanding ability of tracking and fast positioning TTFF functions under various complex environments；
Advanced multipath suppression technology, it is ensured that the precision of location navigation.
The utility model uses double mode alignment system, is received by UM220 terminals from two kinds of frequencies of the Big Dipper and GPS
Satellite-signal, it can both be positioned with the Big Dipper or GPS single systems, and the Big Dipper can not be received in system with the Big Dipper and GPS alignment by union again
When signal or gps signal, position using single system, when two kinds of signals can be received, using alignment by union, can have
Effect avoid that speed is too fast, vehicle is excessively near and traffic light-free intersection etc. caused by car accident.
The utility model is exemplarily described above in conjunction with accompanying drawing, it is clear that the utility model specific implementation not by
The limitation of aforesaid way, as long as employing changing for the various unsubstantialities that methodology and technical scheme of the present utility model are carried out
Enter, or it is not improved by it is of the present utility model design and technical scheme directly apply to other occasions, in the utility model
Protection domain within.The scope of protection of the utility model should be determined by the scope of protection defined in the claims.
Claims (5)
- A kind of 1. vehicle active safety early warning system, it is characterised in that：A car-mounted device is respectively mounted on each vehicle, it is described Car-mounted device leads to including Android development boards (1), the Big Dipper/GPS dual-mode formula positioner (2), APP clients (3) and Zigbee T unit (4), the Android development boards (1) are established by serial ports to be had and zigbee communicators (4) and the Big Dipper/GPS pairs The interface of Pattern localization device (2), position, speed and the direction of collection vehicle, the Zigbee communication device (4) are used for sending Position, speed and the directional information of itself, it is also used for receiving the same type information of other vehicles, the Big Dipper/GPS dual-mode Formula positioner (2) is used for being accurately positioned vehicle location, obtains positional information, and the APP clients (3) are used to show The information of Android development boards collection；The Android development boards (1) include Android embedded OSs and Google Map electronic maps, described Google Map electronic maps are connected to the api interface of Android embedded OSs, the Android embedded operations System also includes velocity sensor and direction inductor device, is respectively used to detect car speed and direction.
- A kind of 2. vehicle active safety early warning system according to claim 1, it is characterised in that：The Big Dipper/the GPS dual-mode Formula positioner (2) includes ground control centre (5), big-dipper satellite (6), GPS (7) and user terminal (8), is controlled by ground Center (5) controls big-dipper satellite (6) and GPS (7) by the satellite signal transit of two kinds of frequencies to user terminal (8).
- A kind of 3. vehicle active safety early warning system according to claim 1, it is characterised in that：The big-dipper satellite (6) It is identical with the coded system of (7) two kinds of alignment systems of GPS, all it is to use CDMA coded system.
- A kind of 4. vehicle active safety early warning system according to claim 2, it is characterised in that the user terminal (8) Satellite-signal from (7) two kinds of frequencies of big-dipper satellite (6) and GPS is received using UM220 terminals, both can be mono- with the Big Dipper or GPS System positions, again can be with the Big Dipper and GPS alignment by union.
- 5. a kind of vehicle active safety early warning system according to claim 4, it is characterised in that the UM220 terminals are adopted With BBP (12), BBP (12) periphery provided RF input interfaces (9) and receives satellite-signal, and passed through SAW filter circuits (10) are filtered processing, after filtered processing, then by RF front ends (11) to BBP (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720286053.3U CN206671570U (en) | 2017-03-23 | 2017-03-23 | A kind of vehicle active safety early warning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720286053.3U CN206671570U (en) | 2017-03-23 | 2017-03-23 | A kind of vehicle active safety early warning system |
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| Publication Number | Publication Date |
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| CN206671570U true CN206671570U (en) | 2017-11-24 |
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| CN201720286053.3U Expired - Fee Related CN206671570U (en) | 2017-03-23 | 2017-03-23 | A kind of vehicle active safety early warning system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI650258B (en) * | 2017-11-28 | 2019-02-11 | 財團法人車輛研究測試中心 | Object collision prediction method and device thereof |
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2017
- 2017-03-23 CN CN201720286053.3U patent/CN206671570U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI650258B (en) * | 2017-11-28 | 2019-02-11 | 財團法人車輛研究測試中心 | Object collision prediction method and device thereof |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171124 Termination date: 20210323 |
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| CF01 | Termination of patent right due to non-payment of annual fee |