CN113611146A - Standard parking method based on NFC and azimuth calculation - Google Patents
Standard parking method based on NFC and azimuth calculation Download PDFInfo
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- CN113611146A CN113611146A CN202110743278.8A CN202110743278A CN113611146A CN 113611146 A CN113611146 A CN 113611146A CN 202110743278 A CN202110743278 A CN 202110743278A CN 113611146 A CN113611146 A CN 113611146A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/14—Traffic control systems for road vehicles indicating individual free spaces in parking areas
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/14—Traffic control systems for road vehicles indicating individual free spaces in parking areas
- G08G1/145—Traffic control systems for road vehicles indicating individual free spaces in parking areas where the indication depends on the parking areas
- G08G1/147—Traffic control systems for road vehicles indicating individual free spaces in parking areas where the indication depends on the parking areas where the parking area is within an open public zone, e.g. city centre
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Abstract
The invention provides a standard parking method based on NFC and azimuth calculation. Firstly, drawing legal parking areas one by one on a map according to actual conditions, recording longitude and latitude sets of the areas, installing corresponding NFC induction sheets in a set area range, after a user rides by virtue of a car, when the user returns the car at a station, determining whether the car returns to the legal area or not by sensing the NFC induction sheets according to specific ability, specifically dividing the car stopping direction when returning to the car at each specific station, calculating the correct stopping direction and the north direction included angle, calculating the car head and the north direction angle at the moment by the terminal through a gyroscope technology, and returning the car when the angle meets conditions. The invention corrects the condition that the GPS is disorderly stopped and randomly placed due to the inaccurate positioning error of various reasons.
Description
Technical Field
The invention relates to a parking method, in particular to a standard parking method based on near field communication and azimuth calculation.
Background
Near Field Communication (NFC) is a short-range, high-frequency radio technology.
The current returning of sharing bicycle (especially sharing electric bicycle) is basically based on vehicle positioning to confirm the returning position, the vehicle position is determined according to the longitude and latitude of the GPS or Beidou positioning uploaded by the vehicle, the technology mainly relies on the longitude and latitude of the GPS or Beidou positioning to analyze, the accuracy of the vehicle movement track is improved mainly by relying on the positioning precision of the terminal under the condition of neglecting errors caused by calibration, the positioning precision of the GPS positioning can be influenced by a plurality of environmental factors, so the positioning deviation can be caused, the bicycle is parked everywhere, the bicycle cannot be parked in a designated area, the traffic is greatly unchanged, and the traffic order is influenced.
The disadvantage of this method relying on the positioning accuracy of the terminal is that:
1. the accuracy of the vehicle position depends on the positioning accuracy of the terminal.
2. Due to the GPS drift, many positioning drifts may occur.
3. Influenced by GPS positioning accuracy, the actual parking position of the vehicle has certain deviation.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and the NFC technology is used for confirming that the vehicle is parked in a legal area, and the vertical parking technology is used for confirming whether the vehicle is parked orderly, so that the standard parking function is realized.
In order to solve the problems in the prior art, the invention provides a standard parking method based on NFC and azimuth calculation.
Firstly, drawing legal parking areas one by one on a map according to actual conditions, recording longitude and latitude sets of the areas, installing corresponding NFC induction sheets in a set area range, after a user rides by virtue of a car, when the user returns the car at a station, determining whether the car returns to the legal area or not by sensing the NFC induction sheets according to specific ability, specifically dividing the car stopping direction when returning to the car at each specific station, calculating the correct stopping direction and the north direction included angle, calculating the car head and the north direction angle at the moment by the terminal through a gyroscope technology, and returning the car when the angle meets conditions.
A standard parking method based on NFC and azimuth calculation is characterized by comprising the following steps:
step 1: dividing legal vehicle returning areas: dividing legal parking areas on a map according to actual conditions;
step 2: the installation returns car NFC device: installing an NFC induction strip at a corresponding actual place;
and step 3: dividing the direction of returning the car: dividing legal parking areas on a map, drawing a vehicle returning direction of each specific area, and confirming a direction angle of a specific vehicle returning;
and 4, step 4: and (3) returning the vehicle for verification: when the vehicle is returned, the terminal actively inquires whether an NFC signal exists around the vehicle, the signal is received, the vehicle is in a legal vehicle returning area A at the moment, if the signal is not received, the vehicle cannot be returned, then the vehicle returning angle is judged, and the vehicle returning angle meets the requirement of the angle range, and the vehicle can be returned;
and 5: the method for judging the returning azimuth comprises the following steps:
firstly, the car returning direction is marked by two longitude and latitude points A, B, the specific direction is from B to A, the sphere center is O, the longitude of A is lonA, the latitude is latA, the longitude of B is lonB, and the latitude is latB, firstly, the longitude and latitude angle values of the two points are converted into corresponding radians, namely the longitude of the point B is converted into the radian Hby ═ lonB × pi/180, and the latitude is converted into Hbx ═ latB × pi/180, and the specific formula is as follows:
angle (arctan (| dx/dy |)) 180/pi;
dx＝(lonB*π/180-lonA*π/180)*Ed；
dy＝(latB*π/180-latA*π/180)*Ec；
Ec＝Rj+(Rc-Rj)*(90-latA)/90；
Ed＝Ec*cos(latA*π/180)；
wherein Rc is the equatorial radius, Rj is the earth radius, the earth is an approximate sphere, and Rc and Rj are slightly different; the role of Ec is to correct the length of the spherical radius that varies as a result of latitude, if at the equator, Ec is exactly the equator radius Rc, if at this time, Rj + (Rc-Rj) × (90-0)/90-Rc; if the pole is 90, Ec is Rj + (Rc-Rj) × (90-90)/90 is Rj, then Ec is just the polar radius Rj, dx represents the length of converting the difference of longitude to the specific plane rectangular coordinate system X, dy represents the length of converting the difference of latitude to the specific plane rectangular coordinate system Y, cos () is the cosine of the specific value, and then the angle is obtained by the arctangent function.
As a further improvement of the invention, the defined area is composed of a longitude and latitude point set on the map, and the area is a polygon.
As a further development of the invention, the area is rectangular.
As a further improvement of the present invention, in step 3, the included angle between the vehicle head and the due north direction is used as the direction angle, and the direction angle is recorded and bound to the parking area.
As a further improvement of the present invention, in step 4, the required range of the parking angle is: the included angle N between the headstock and the north direction is 140-160 degrees.
As a further improvement of the invention, the vehicle in the method is an electric bicycle or a bicycle.
The invention has the beneficial effects that:
the invention corrects the condition that the GPS is disorderly stopped and randomly placed due to the inaccurate positioning error of various reasons.
The invention increases the vertical parking check, and the vehicle is placed neatly and beautifully.
Drawings
Fig. 1 is a flowchart illustrating a normal parking method based on NFC and azimuth calculation according to the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
A standard parking method based on NFC and azimuth calculation comprises the following steps:
and acquiring original track data positioned and uploaded by a terminal on the platform, calibrating the data according to the map type specified by the request, and requesting the data of a map corresponding to a third party.
Specific sites are divided in a legal area, an NFC induction belt is installed on each site, specific parking head parking directions are defined, and the corresponding relations are recorded into a system.
When a user returns the vehicle, the user does not sense the NFC signal and does not permit the vehicle to return, and when the user senses the NFC signal, the vehicle is judged in the direction of the vehicle, the direction is inconsistent, the vehicle is not permitted to return, and the direction is consistent or the vehicle can be returned within the error range.
The method specifically comprises the following steps:
step 1: dividing legal vehicle returning areas: according to the actual situation, individual legal parking areas are divided on the map, the divided areas are composed of longitude and latitude point sets on the map, and the areas are polygons generally.
Step 2: the installation returns car NFC device: and installing the NFC induction strips at corresponding actual places, and dividing legal induction strips.
And step 3: dividing the direction of returning the car: and drawing the returning direction of each specific area on the map in the divided legal parking areas, namely confirming the direction angle of the specific returning vehicle, generally using the included angle with the due north direction, and recording the included angle and binding the included angle with the parking areas.
And 4, step 4: and (3) returning the vehicle for verification: when the vehicle is returning, the terminal actively inquires whether NFC signals exist around the terminal, the terminal receives the signals, the terminal indicates that the vehicle is in a legal returning area A at the moment, the vehicle cannot be returned if the NFC signals are not received, then the returning angle of the vehicle is judged, if the legal parking direction N defined by the returning area A on the platform is that the included angle between the vehicle head and the due north direction is 150 degrees, the error range is plus or minus 10 degrees, the legal returning angle of the vehicle is 140-160 degrees, and the vehicle can be returned within the range by the angle M uploaded by the vehicle at the moment.
And 5: the method for judging the returning azimuth comprises the following steps:
the first marked vehicle returning direction is composed of two longitude and latitude points A, B, the specific direction is from B to A, the sphere center is O, the longitude of A is lonA, the latitude is latA, the longitude of B is lonB, the longitude and latitude values of the two points are converted into corresponding radians, namely the longitude of B point is converted into the radian Hby ═ lonB ^ pi/180, the latitude is converted into the radian Hbx ═ latB ^ pi/180, and the specific formula is as follows
Angle (arctan (| dx/dy |)) 180/pi;
dx＝(lonB*π/180-lonA*π/180)*Ed
dy＝(latB*π/180-latA*π/180)*Ec
Ec＝Rj+(Rc-Rj)*(90-latA)/90；
Ed＝Ec*cos(latA*π/180)
where Rc is the equatorial radius and Rj is the radius of the earth, which is an approximate sphere, and Rc is slightly different from Rj. ec is used to correct the length of the spherical radius that changes with latitude. If Ec is exactly the equatorial radius Rc, at the moment on the equator, Rj + (Rc-Rj) × (90-0)/90-Rc; if the pole is 90, Ec is Rj + (Rc-Rj) × (90-90)/90 is Rj, then Ec is just the polar radius Rj, dx represents the length of converting the difference of longitude to the specific plane rectangular coordinate system X, dy represents the length of converting the difference of latitude to the specific plane rectangular coordinate system Y, and math.cos () is the cosine of the specific value, and then the angle is obtained by the arctangent function.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (6)
1. A standard parking method based on NFC and azimuth calculation is characterized by comprising the following steps:
step 1: dividing legal vehicle returning areas: dividing legal parking areas on a map according to actual conditions;
step 2: the installation returns car NFC device: installing an NFC induction strip at a corresponding actual place;
and step 3: dividing the direction of returning the car: dividing legal parking areas on a map, drawing a vehicle returning direction of each specific area, and confirming a direction angle of a specific vehicle returning;
and 4, step 4: and (3) returning the vehicle for verification: when the vehicle is returned, the terminal actively inquires whether an NFC signal exists around the vehicle, the signal is received, the vehicle is in a legal vehicle returning area A at the moment, if the signal is not received, the vehicle cannot be returned, then the vehicle returning angle is judged, and the vehicle returning angle meets the requirement of the angle range, and the vehicle can be returned;
and 5: the method for judging the returning azimuth comprises the following steps:
firstly, the car returning direction is marked by two longitude and latitude points A, B, the specific direction is from B to A, the sphere center is O, the longitude of A is lonA, the latitude is latA, the longitude of B is lonB, and the latitude is latB, firstly, the longitude and latitude angle values of the two points are converted into corresponding radians, namely the longitude of the point B is converted into the radian Hby ═ lonB × pi/180, and the latitude is converted into Hbx ═ latB × pi/180, and the specific formula is as follows:
angle (arctan (| dx/dy |)) 180/pi;
dx＝(lonB*π/180-lonA*π/180)*Ed；
dy＝(latB*π/180-latA*π/180)*Ec；
Ec＝Rj+(Rc-Rj)*(90-latA)/90；
Ed＝Ec*cos(latA*π/180)；
wherein Rc is the equatorial radius, Rj is the earth radius, the earth is an approximate sphere, and Rc and Rj are slightly different; the role of Ec is to correct the length of the spherical radius that varies as a result of latitude, if at the equator, Ec is exactly the equator radius Rc, if at this time, Rj + (Rc-Rj) × (90-0)/90-Rc; if the pole is 90, Ec is Rj + (Rc-Rj) × (90-90)/90 is Rj, then Ec is just the polar radius Rj, dx represents the length of converting the difference of longitude to the specific plane rectangular coordinate system X, dy represents the length of converting the difference of latitude to the specific plane rectangular coordinate system Y, cos () is the cosine of the specific value, and then the angle is obtained by the arctangent function.
2. The canonical parking method based on NFC and azimuth calculation according to claim 1, wherein: the demarcated area is composed of a longitude and latitude point set on a map, and the area is a polygon.
3. The canonical parking method based on NFC and azimuth calculation according to claim 2, wherein: the region is rectangular.
4. The canonical parking method based on NFC and azimuth calculation according to claim 1, wherein: in the step 3, the included angle between the vehicle head and the due north direction is used as the direction angle, and the direction angle is recorded and bound with the parking area.
5. The canonical parking method based on NFC and azimuth calculation according to claim 1, wherein: in step 4, the required range of the parking angle is as follows: the included angle N between the headstock and the north direction is 140-160 degrees.
6. The canonical parking method based on NFC and azimuth calculation according to claim 1, wherein: the vehicle in the method is an electric bicycle or a bicycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110743278.8A CN113611146A (en) | 2021-06-30 | 2021-06-30 | Standard parking method based on NFC and azimuth calculation |
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| CN202110743278.8A CN113611146A (en) | 2021-06-30 | 2021-06-30 | Standard parking method based on NFC and azimuth calculation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116778719A (en) * | 2023-08-24 | 2023-09-19 | 中汽科技(北京)有限公司 | Real-time road condition prediction method and system based on GPS data in PEMS |
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| US20100118140A1 (en) * | 2007-02-16 | 2010-05-13 | Toyota Jidosha Kabushiki Kaisha | Parking assisting apparatus and method |
| CN206737501U (en) * | 2017-05-16 | 2017-12-12 | 东莞市信瑞智能科技有限公司 | A kind of Intelligent stop knee |
| CN110823233A (en) * | 2019-11-28 | 2020-02-21 | 广东电网有限责任公司 | Map model construction method and system based on coordinate transformation |
| CN111232097A (en) * | 2020-01-15 | 2020-06-05 | 上海钧正网络科技有限公司 | Intelligent induction parking device, method, system and server |
| CN111255278A (en) * | 2020-01-15 | 2020-06-09 | 上海钧正网络科技有限公司 | Intelligent induction parking device, method and system, vehicle and server |
| CN111784439A (en) * | 2020-05-28 | 2020-10-16 | 宁波小遛共享信息科技有限公司 | Method, system and device for returning vehicle detection |
| CN213545334U (en) * | 2020-10-14 | 2021-06-25 | 常德智眼云科技有限公司 | Shared vehicle fixed-point parking system |
-
2021
- 2021-06-30 CN CN202110743278.8A patent/CN113611146A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100118140A1 (en) * | 2007-02-16 | 2010-05-13 | Toyota Jidosha Kabushiki Kaisha | Parking assisting apparatus and method |
| CN206737501U (en) * | 2017-05-16 | 2017-12-12 | 东莞市信瑞智能科技有限公司 | A kind of Intelligent stop knee |
| CN110823233A (en) * | 2019-11-28 | 2020-02-21 | 广东电网有限责任公司 | Map model construction method and system based on coordinate transformation |
| CN111232097A (en) * | 2020-01-15 | 2020-06-05 | 上海钧正网络科技有限公司 | Intelligent induction parking device, method, system and server |
| CN111255278A (en) * | 2020-01-15 | 2020-06-09 | 上海钧正网络科技有限公司 | Intelligent induction parking device, method and system, vehicle and server |
| CN111784439A (en) * | 2020-05-28 | 2020-10-16 | 宁波小遛共享信息科技有限公司 | Method, system and device for returning vehicle detection |
| CN213545334U (en) * | 2020-10-14 | 2021-06-25 | 常德智眼云科技有限公司 | Shared vehicle fixed-point parking system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116778719A (en) * | 2023-08-24 | 2023-09-19 | 中汽科技(北京)有限公司 | Real-time road condition prediction method and system based on GPS data in PEMS |
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Application publication date: 20211105 |