CN111474566B - Method for judging installation condition of road transport vehicle satellite positioning system terminal - Google Patents
Method for judging installation condition of road transport vehicle satellite positioning system terminal Download PDFInfo
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- CN111474566B CN111474566B CN202010432535.1A CN202010432535A CN111474566B CN 111474566 B CN111474566 B CN 111474566B CN 202010432535 A CN202010432535 A CN 202010432535A CN 111474566 B CN111474566 B CN 111474566B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/35—Constructional details or hardware or software details of the signal processing chain
- G01S19/37—Hardware or software details of the signal processing chain
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/23—Testing, monitoring, correcting or calibrating of receiver elements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a method for judging the installation condition of a satellite positioning system terminal of a road transport vehicle, which comprises the steps of obtaining track data of satellite positioning of the vehicle; detecting, filtering and preprocessing abnormal points of data; extracting and selecting characteristics of the track data; judging the use condition of the terminal in the window period end point range; judging the service condition of the terminal in the window period process range; and judging the installation condition of the terminal. The method and the device extract the characteristics to describe the use condition of the terminal in the window period after cleaning and filtering the data by using the track data acquired by the terminal, and finally judge the installation condition of the road transport vehicle to the terminal. The method and the device can be applied to various applications related to driving behaviors, can ensure the reliability of data on the premise of judging the installation condition of the vehicle terminal, further effectively describe the driving behaviors of the user, accurately identify the driving risk of the user and ensure the accuracy and the scientificity of the analysis result.
Description
Technical Field
The invention relates to a method for judging the installation condition of a satellite positioning system terminal, in particular to a method for judging the installation condition of a road transport vehicle satellite positioning system terminal, and belongs to the technical field of vehicle terminal attribute judgment.
Background
The transportation market has demands for road transportation vehicles with high efficiency, high reliability, low cost and rapid safety, but the current road transportation vehicles exhibit frequent accident and large case characteristics, so the operation situation of the road transportation vehicles is concerned by society and countries. According to the twelfth rule of road transport vehicle dynamic supervision and management method of the platform of China department of transportation: the satellite positioning device meeting the standard is arranged on the tourist coach, the bus-in-package coach, the class III bus and the dangerous goods transportation vehicle before leaving the factory. The heavy truck and the semi-trailer traction vehicle should be provided with a satellite positioning device meeting the standard before leaving the factory and be connected to a national public supervision and service platform of the road truck. Twenty-third rule: the road freight vehicle public platform is responsible for dynamically monitoring individual freight vehicles and freight vehicles of small road freight transportation enterprises (having less than 50 heavy trucks or tractors). The public platform of the road freight vehicle sets limit values for monitoring overspeed running and fatigue driving, and automatically reminds a driver of correcting illegal behaviors such as overspeed running and fatigue driving. The installation and the use of the terminal can receive the vehicle running information in real time, discover the abnormal driving state of the driver in time and give a prompt, effectively ensure the transportation safety of the vehicle and reduce the occurrence probability of traffic accidents. And for the judgment of the installation condition of the vehicle terminal, the method plays a decisive role in restraining the driver from driving normally and collecting accurate journey data for research and analysis.
There is a certain contradiction of driver behavior with respect to the mounting of terminals on vehicles. After the terminal is installed, the transportation enterprise can grasp all conditions of the vehicle, and the driver is under supervision of the enterprise to consider that the freedom of the transportation enterprise is limited. The operation of the terminal requires consumption of electric power and consumes a large amount of electric power even though the vehicle is still operating in a stationary state. In addition, the installation of the terminal is not free and a certain service charge is paid every year, and the driver considers that this action increases the operation cost of the terminal itself. In summary, the terminal is installed in practical application with a certain obstruction, and the situation that the driver self-disassembles the terminal is very easy to occur. Therefore, the judgment of the installation condition of the road transport vehicle terminal is imperative, and meanwhile, certain difficulty exists in the design of a judgment method.
Disclosure of Invention
The invention aims to solve the problems and provide a method for judging the installation condition of a satellite positioning system terminal of a road transport vehicle.
The invention realizes the above purpose through the following technical scheme: a judging method for the installation condition of a road transport vehicle satellite positioning system terminal comprises the following steps:
(1) Acquiring track data of satellite positioning of the vehicle;
(2) Detecting, filtering and preprocessing abnormal points of data;
(3) Extracting and selecting characteristics of the track data;
(4) Judging the use condition of the terminal in the window period end point range;
(5) Judging the service condition of the terminal in the window period process range;
(6) And judging the installation condition of the terminal.
As a further scheme of the invention: the acquiring the track data of the satellite positioning of the vehicle comprises the following steps:
satellite positioning latitude, satellite positioning longitude, satellite positioning time, satellite positioning direction, satellite positioning speed, satellite positioning accuracy, and satellite number.
As a further scheme of the invention: the data outlier detection filtering and preprocessing comprises the following steps:
the track data of the satellite positioning of the vehicle is filtered, and data points with abnormal longitude and latitude, abnormal satellite positioning time, abnormal satellite positioning direction, abnormal satellite positioning speed and poor satellite positioning precision are removed.
As a further scheme of the invention: the feature extraction and selection of the track data comprises the following steps:
the travel mileage can be obtained through the calculation of the longitude and latitude of satellite positioning; the travel time length can be obtained through calculation of satellite positioning time; the maximum travel speed and the minimum travel speed can be obtained through the refinement of satellite positioning speed; the average travel speed can be obtained through calculation of the travel mileage and the travel duration; by the trajectory data slicing, the number of vehicle strokes can be obtained. According to the calculation, 6 feature indexes are selected in total.
As a further scheme of the invention: the judging of the use condition of the terminal in the window period end point range comprises the following steps:
and selecting a window period starting end point, intercepting a symmetric time interval covering the starting end point, and acquiring corresponding characteristic index data. Judging the service condition of the terminal according to the number of strokes, and judging that the service degree of the terminal is more active if the number of strokes is larger than a certain value; judging the service condition of the terminal according to the driving mileage and the driving duration, and judging that the service degree of the terminal is more reasonable if the driving mileage is greater than a certain value and the driving duration is greater than a certain value; and judging the service condition of the terminal according to the maximum speed, the minimum speed and the average speed, and judging the service degree of the terminal to be more effective if the maximum speed, the minimum speed and the average speed are all within the corresponding reasonable ranges. Similarly, selecting a window period termination endpoint, intercepting a symmetric time interval covering the termination endpoint, and acquiring corresponding characteristic value index data. And executing the operation, and judging the service condition of the terminal in the termination endpoint range.
As a further scheme of the invention: the judging of the use condition of the terminal in the window period process range comprises the following steps:
and acquiring characteristic index data in the window period process range. Judging the service condition of the terminal according to the number of strokes, and judging that the service degree of the terminal is normal if the number of strokes is larger than a certain value; judging the service condition of the terminal according to the driving mileage and the driving duration, and judging that the service degree of the terminal is normal if the driving mileage is greater than a certain value and the driving duration is greater than a certain value; and judging the service condition of the terminal according to the maximum speed, the minimum speed and the average speed, and judging that the service degree of the terminal is normal if the maximum speed, the minimum speed and the average speed are all within the corresponding reasonable ranges.
As a further scheme of the invention: the judging of the terminal installation condition comprises the following steps:
judging the use condition of the terminal in the end point range of the window period, and calculating the high-efficiency stroke quantity duty ratio of the end point range; judging the use condition of the terminal in the window period process range, and calculating the normal stroke quantity ratio of the process range; and judging the terminal installation condition according to the high-efficiency stroke quantity duty ratio of the end point range and the normal stroke quantity duty ratio of the process range, and judging the terminal installation condition to be normal if the high-efficiency stroke quantity duty ratio is larger than a certain value and the normal stroke quantity duty ratio is larger than a certain value.
The beneficial effects of the invention are as follows: the method for judging the terminal installation condition of the satellite positioning system of the road transport vehicle is reasonable in design, and the collected satellite positioning data are filtered and preprocessed in a surprise mode, so that the influence of the data quality problem on the terminal installation condition judgment is reduced. Further, feature indexes of the vehicle track data are extracted: mileage, travel duration, maximum speed, minimum speed, average speed, and number of strokes. Further, the invention sets a reasonable threshold value according to the terminal use condition of the window period end point range to judge the terminal use degree. Further, the invention sets a reasonable threshold value according to the terminal use condition of the window period process range to judge the terminal use degree. The invention effectively judges the terminal installation condition according to the end point of the window period and the process range terminal use condition.
Drawings
FIG. 1 is a flow chart of a method for determining the installation condition of a satellite positioning system terminal of a road transport vehicle according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a judging flow of a terminal use situation according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a judging flow of a normal installation situation of a terminal according to an embodiment of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In an embodiment, referring to fig. 1, a method for determining a terminal installation situation of a satellite positioning system of a road transport vehicle includes:
step A, satellite positioning track data are obtained:
in this example, a satellite positioning module (including a driving vehicle interior, a vehicle-mounted intelligent device, a smart phone, etc.) is started, and a data connection is established with the computing terminal through the satellite positioning module. The travel data such as satellite positioning latitude, satellite positioning longitude, satellite positioning time, satellite positioning direction, satellite positioning speed, satellite positioning precision, satellite number and the like can be obtained;
step B, detecting, filtering and preprocessing abnormal points of data:
in this example, outlier detection and preprocessing are performed on the acquired data. And eliminating data points with abnormal longitude and latitude, abnormal satellite positioning time, abnormal satellite positioning direction, abnormal satellite positioning speed and poor satellite positioning precision. Because abnormal data points can cause deviation of feature calculation, accuracy is lost in judging the use condition of the terminal in the window period end point range and the process range;
step C, extracting and selecting characteristics of the track data:
by analyzing the track data of satellite positioning of the vehicle terminal, the number of vehicle strokes, the longitude and latitude of satellite positioning, time and speed can be found to better reflect the service condition of the terminal. The number of the vehicle strokes is a real reflection of the operation condition of the vehicle, and the more the number of the vehicle strokes, the higher the frequency of terminal use of the vehicle, and the higher the activity degree of the vehicle is correspondingly. The satellite positioning longitude and latitude is the most visual reflection of the geographic position information of the vehicle, and the driving mileage index can be obtained by calculating the travel starting longitude and latitude. The satellite positioning time is visually displayed on the vehicle time information, and the running duration index can be obtained through calculation of the travel starting time. The driving mileage and the driving duration are macroscopic manifestations of the vehicle journey, and the rationality of the vehicle journey can be judged. The satellite positioning speed is a surrounding representation of the vehicle in the running process, and three characteristic indexes of maximum speed, minimum speed and average speed can be listed by refining the satellite positioning speed. The maximum speed, the minimum speed and the average speed can describe the behavior habit of the vehicle running, and the effectiveness of the vehicle journey can be judged; the specific steps of the method are as follows:
1) Counting the number of vehicle strokes: dividing the vehicle travel according to a system travel dividing rule, and summarizing the travel result reported by the system as the travel number of the vehicle in a window period;
2) Calculating the driving mileage and the driving duration of the vehicle: determining satellite positioning longitude and latitude information of the journey according to the journey information reported by the system, calculating an actual distance formula according to longitude and latitude coordinates to obtain the distance between two adjacent points, and adding the distances in the journey process to obtain the driving mileage; determining satellite positioning time information of the journey according to the journey information reported by the system, and subtracting and calculating the journey ending time and journey starting time to obtain the driving duration;
3) Maximum speed, minimum speed and average speed of the vehicle are calculated: according to the satellite positioning speed information, finding the maximum value and the minimum value of the speed in the track data as the maximum speed and the minimum speed of the vehicle; and calculating the average speed of the vehicle according to the number of the travel track data points and the speed of the track points.
The 6 feature variables obtained in combination with the feature extraction and selection described above.
Step D, judging the service condition of the terminal in the window period end point range:
the different travel track data of the vehicle reflect the different attribute characteristics of the travel of the vehicle, and the use conditions of the terminal in the window period end point range can be obviously different. The number of strokes of the normal vehicle installed at the terminal is larger in the window period end point range, and the active degree of the end point is judged through the number of strokes so as to define the active vehicle. The normal vehicle is installed at the terminal, the driving mileage and the driving duration are in reasonable ranges, and the rationality of the journey is defined through the driving mileage and the driving duration. The maximum speed, the minimum speed and the average speed of the normal vehicle installed at the terminal are in the effective range, and the effectiveness of the travel is defined through the maximum speed, the minimum speed and the average speed; the specific detailed judgment rule refers to the step of fig. 2.
Step E, judging the service condition of the terminal in the window period process range:
the judging flow of the using condition of the terminal in the window period process range is basically consistent with the judging of the terminal in the end point range, and the difference is that the setting of the threshold values of all the steps is different. In the process range, the driving intensity is weaker than that in the end point range, so the setting of the threshold value is properly relaxed. The specific detailed judgment rule refers to the step of fig. 2;
step F, judging the normal installation condition of the terminal in the window period:
the normal installation condition of the terminal in the window period can be judged by the use condition of the terminal in the endpoint range and the process range. The relation between the effective stroke quantity of the end point range and the total stroke quantity can distinguish whether the terminal is normally installed or not, and the invention defines the effective stroke quantity ratio of the end point range to quantify the phenomenon; the relation between the effective travel number and the total travel number of the process range can also distinguish whether the terminal is normally installed, and the invention defines the effective travel number ratio of the process range to quantify the phenomenon. The vehicles with two types of judgment rules can be considered to be normally installed in the window period; the specific detailed judgment rule refers to the step of fig. 3.
As shown in fig. 2, in this embodiment, the method includes the following steps:
1) The acquiring data comprises the following steps: acquiring travel data such as satellite positioning latitude, satellite positioning longitude, satellite positioning time, satellite positioning direction, satellite positioning speed, satellite positioning precision, satellite number and the like through a satellite positioning system;
2) Active vehicle judgment: since the use condition of the terminal in the window period is closely related to the number of vehicle strokes, the normal terminal can be frequently used in the window period time range. Taking the number of strokes of a user in the period as a standard for judging the activity degree of the vehicle, and considering the vehicle as an inactive vehicle if the number of strokes is smaller than n; if the number of the strokes is not less than n, the vehicle is considered as an active vehicle, and the next stage of judgment is carried out;
3) And (3) reasonable stroke judgment: if the vehicle is judged by its active vehicle, a further judgment of the rationality of its journey is required. The driving mileage and the driving time length are important indexes for measuring the rationality of the journey, and the journey is rationally divided through the two indexes. The driving mileage and the driving duration of the reasonably driven vehicle cannot be too short, because the too short travel has little meaning for the driving user; meanwhile, the driving mileage and the driving duration of the vehicle which reasonably runs are not overlong, because the fatigue degree of a driving user can be increased due to the overlong journey, and a normally installed terminal can prompt the behavior. If the driving distance is not in the proper range of a1 to a2 or the driving duration is not in the proper range of b1 to b2, the travel is considered as an unreasonable travel; if the driving mileage is in the proper range from a1 to a2 and the driving duration is in the proper range from b1 to b2, the stroke is considered to be a reasonable stroke, and the judgment of the next stage is carried out;
4) And (3) judging the effective travel: if the stroke is judged by the reasonable stroke, further judgment on the effectiveness of the stroke is needed. The maximum speed, the minimum speed and the average speed in the travel are important reflections of the effectiveness of the travel, and the invention defines the effectiveness of the travel through the three indexes. The minimum speed of the effective travel is not too small, the maximum speed is not too large, the average speed is in a proper range, and normally installed terminals can normalize the behavior. If the maximum speed is not less than c or the minimum speed is not greater than d or the average speed is not in the appropriate range of e1 to e2, then the stroke is considered to be a non-effective stroke; if the maximum speed is less than c and the minimum speed is greater than d and the average speed is in the appropriate range of e1 to e2, then the stroke is considered to be an effective stroke.
As shown in fig. 3, in this embodiment, the method includes the following steps:
1) The acquiring data comprises the following steps: judging through the use condition of the terminal window period, and acquiring the end point range stroke quantity, the end point range effective stroke quantity, the process range stroke quantity and the process range effective stroke quantity of the vehicle window period;
2) Judging abnormal terminal installation: since the abnormal condition of the terminal installation is related to the end point range stroke number and the effective stroke number, the abnormal terminal installation may cause the effective stroke number to be relatively small. Judging the abnormal condition of the terminal in the end point range by setting a threshold value n1, and if the effective stroke number of the end point range is not more than n1, considering that the terminal is abnormally installed; if the effective stroke number of the end point range is larger than n1, entering the judgment of the next stage;
3) And (3) normal judgment of terminal installation: since the normal condition of the terminal installation is related to the number of process range strokes and the number of effective strokes, the abnormal installation of the terminal can result in a relatively small number of effective strokes. Judging the abnormal condition of the terminal in the process range by setting a threshold value n2, and if the effective stroke number of the process range is not more than n2, considering that the terminal is abnormally installed; if the process range effective stroke number is larger than n2, the terminal is considered to be installed normally.
Working principle: when the method for judging the installation condition of the satellite positioning system terminal of the road transport vehicle is used, satellite positioning track data is firstly obtained, then filtering and preprocessing are detected according to abnormal points, then characteristic extraction and selection are carried out on the track data, then the use condition of the terminal in a window period end point and a process range is judged, and finally the normal installation condition of the terminal in the window period is judged. After the method acquires the related data and carries out cleaning and preprocessing, the normal installation condition of the terminal in the window period is judged according to the use condition of the terminal in the window period. On the premise of effectively judging the normal installation of the terminal, a reliable basis is provided for analyzing the vehicle track data.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (4)
1. A judging method for the installation condition of a road transport vehicle satellite positioning system terminal is characterized by comprising the following steps: comprising the following steps:
(1) Acquiring track data of satellite positioning of the vehicle;
(2) Detecting, filtering and preprocessing abnormal points of data;
(3) Extracting and selecting characteristics of the track data;
(4) Judging the use condition of the terminal in the window period end point range;
the judging of the use condition of the terminal in the window period end point range comprises the following steps:
selecting a window period starting end point, intercepting a symmetric time interval covering the starting end point, acquiring corresponding characteristic index data, judging the use condition of the terminal according to the number of strokes, and judging that the use degree of the terminal is more active if the number of strokes is larger than a certain value; judging the service condition of the terminal according to the driving mileage and the driving duration, and judging that the service degree of the terminal is more reasonable if the driving mileage is greater than a certain value and the driving duration is greater than a certain value; judging the service condition of the terminal according to the maximum speed, the minimum speed and the average speed, judging that the service condition of the terminal is more effective if the maximum speed, the minimum speed and the average speed are all within the corresponding reasonable ranges, selecting a window period termination endpoint, intercepting a symmetric time interval covering the termination endpoint and acquiring corresponding characteristic value index data, executing the operation, and judging the service condition of the terminal within the termination endpoint range;
(5) Judging the service condition of the terminal in the window period process range;
the judging of the use condition of the terminal in the window period process range comprises the following steps:
acquiring characteristic index data in the window period process range, judging the service condition of the terminal according to the number of strokes, and judging that the service degree of the terminal is normal if the number of strokes is larger than a certain value; judging the service condition of the terminal according to the driving mileage and the driving duration, and judging that the service degree of the terminal is normal if the driving mileage is greater than a certain value and the driving duration is greater than a certain value; judging the service condition of the terminal according to the maximum speed, the minimum speed and the average speed, and judging that the service degree of the terminal is normal if the maximum speed, the minimum speed and the average speed are all within the corresponding reasonable ranges;
(6) Judging the installation condition of the terminal;
the judging of the terminal installation condition comprises the following steps:
judging the use condition of the terminal in the end point range of the window period, and calculating the high-efficiency stroke quantity duty ratio of the end point range; judging the use condition of the terminal in the window period process range, and calculating the normal stroke quantity ratio of the process range; and judging the terminal installation condition according to the high-efficiency stroke quantity duty ratio of the end point range and the normal stroke quantity duty ratio of the process range, and judging the terminal installation condition to be normal if the high-efficiency stroke quantity duty ratio is larger than a certain value and the normal stroke quantity duty ratio is larger than a certain value.
2. The method for judging the installation condition of the satellite positioning system terminal of the road transport vehicle according to claim 1, wherein the method comprises the following steps: the acquiring the track data of the satellite positioning of the vehicle comprises the following steps:
satellite positioning latitude, satellite positioning longitude, satellite positioning time, satellite positioning direction, satellite positioning speed, satellite positioning accuracy, and satellite number.
3. The method for judging the installation condition of the satellite positioning system terminal of the road transport vehicle according to claim 1, wherein the method comprises the following steps: the data outlier detection filtering and preprocessing comprises the following steps:
the track data of the satellite positioning of the vehicle is filtered, and data points with abnormal longitude and latitude, abnormal satellite positioning time, abnormal satellite positioning direction, abnormal satellite positioning speed and poor satellite positioning precision are removed.
4. The method for judging the installation condition of the satellite positioning system terminal of the road transport vehicle according to claim 1, wherein the method comprises the following steps: the feature extraction and selection of the track data comprises the following steps:
the travel mileage can be obtained through the calculation of the longitude and latitude of satellite positioning; the travel time length can be obtained through calculation of satellite positioning time; the maximum travel speed and the minimum travel speed can be obtained through the refinement of satellite positioning speed; the average travel speed can be obtained through calculation of the travel mileage and the travel duration; the number of vehicle strokes can be obtained through the track data segmentation, and 6 feature indexes are selected in total according to the calculation.
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| US6313791B1 (en) * | 1999-05-27 | 2001-11-06 | Michael Dean Klanke | Automotive GPS control system |
| WO2006027354A1 (en) * | 2004-09-10 | 2006-03-16 | Cotares Limited | Apparatus for and method of providing data to an external application |
| CN105974443B (en) * | 2016-05-04 | 2018-06-01 | 深圳广联赛讯有限公司 | Installation testing method, server and the system of GPS terminal |
| CN206906889U (en) * | 2017-07-19 | 2018-01-19 | 江苏柠檬网络科技有限公司 | A kind of intelligent vehicle-carried diagnostic system based on remote platform monitoring |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10141967A (en) * | 1996-11-06 | 1998-05-29 | Matsushita Electric Ind Co Ltd | Navigation apparatus |
| JP2005233714A (en) * | 2004-02-18 | 2005-09-02 | Tech Res & Dev Inst Of Japan Def Agency | Positioning method and data transferring apparatus |
| CN103475740A (en) * | 2013-09-29 | 2013-12-25 | 徐州重型机械有限公司 | Vehicle GPS remote terminal data sending method and GPS remote terminal |
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