CN1169339C - Method for transmitting satellite location data of vehicles - Google Patents
Method for transmitting satellite location data of vehicles Download PDFInfo
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- CN1169339C CN1169339C CNB011151463A CN01115146A CN1169339C CN 1169339 C CN1169339 C CN 1169339C CN B011151463 A CNB011151463 A CN B011151463A CN 01115146 A CN01115146 A CN 01115146A CN 1169339 C CN1169339 C CN 1169339C
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Abstract
The present invention discloses a method for transmitting the satellite positioning data of vehicles, which transmits a short message with vehicle position data to a monitoring center with a GSM short message communicator by a mobile station with a satellite positioning receiver and a GSM short message communicator and by the short message service business of a GSM system. On the occasion of continuous monitoring, N times of sampling are consecutively carried out, new (N-1) groups of data are composed of all data items of a positioning data group for the first time, the value of difference between data items for the subsequent (N-1)th time and a corresponding data item to be compressed for the previous time, and data items which are not compressed, the (N-1) groups of data are combined into a short message to be transmitted, and the short message is decompressed by the monitoring center. The present invention is used to monitor and review vehicle operation, reliably transmits the data in time, has the advantage of low cost and reduces the communication load of a communication link.
Description
Technical field the invention discloses a kind of method that transmits the satellite location data of vehicle, refers to utilize the wireless digital cell phone to transmit the method for the satellite location data of moving target especially.
Background technology needs in time to understand the position of target in order effectively moving targets such as vehicle to be carried out monitoring management.Chinese patent CN1229926A has proposed a kind of satellite fix mobile communication vehicle tracking system, satellite fix (GPS) is accepted the unit for it and wireless communication unit combines formation moving target subsystem, has in addition can accept above-mentioned subsystem information and it is handled the responsing center that implements monitoring.This scheme proposes radio communication can adopt wireless digital cell phone (GSM) communication technology.Under normal conditions, gsm system carries out end-to-end communication, has a side to be in the communication, all can not in time transmit the position data of target.By this scheme, each communication can only transmit one group of data of current location, and in the occasion of continuous monitoring, the expense of communication is also than higher.
Summary of the invention technical problem to be solved by this invention is to propose a kind of method, utilizes gsm system, in time transmits the satellite location data of vehicle under the situation that does not take communication channel.Further, adopt data compression method, once transmit many group locator datas.
The present invention is achieved in that the travelling carriage that is provided with the communication controler that comprises satellite positioning receiver, wireless digital cell phone short message communication device and satellite location data is handled and the short message communication device is controlled on vehicle; Be equipped with wireless digital cell phone short message communication device in Surveillance center, described travelling carriage transmits locator data and receiving control information by the point-to-point SMS service that wireless digital cell phone system short message service center provides to Surveillance center.
After the communication controler of travelling carriage obtains sampling/move instruction, output to satellite positioning receiver is sampled, and the data designated item formed data set, and control described short message communication device is sent to the wireless digital cell phone system as a short message short message service center by the regulation that wireless digital cell phone short message transmits.
When group satellite location data more than the employing data compression method once transmits: after the communication controler of travelling carriage is received sampling/move instruction, by specified time interval satellite positioning receiver output is carried out N sampling and the data designated item is formed N group locator data group, will omit data item that can numerical value is known by inference from first data set in the total data item of the first locator data group and follow-up each data set and the numerical value of the notebook data group of the data item of desire compression be formed new (N-1) with the difference of its last data group corresponding data item as other data item of not doing to compress in the new delivery value in compression back and this group organize data set and be combined in the short message service center that is sent to the wireless digital cell phone system in the short message; Surveillance center receives that this short message decompresses by principle recited above.
The present invention transmits the method for satellite location data of vehicle and the point-to-point SMS service (SMS-PP) that data compression method utilizes gsm system thereof, signaling channel by gsm system transmits short message, even transmission or recipient are in talking state, can also send or receive the vehicle location data simultaneously, when recipient Surveillance center suspends short message for some reason, the short message service center of gsm system can automatically that this recipient is all short messages leave in its inner mailbox, in case this recipient recovers to receive, short message service center just will begin in a minute it is sent short message, has guaranteed that the vehicle location data are sent to Surveillance center as early as possible and reliably.Owing to can adopt data compression method in a short message, to transmit vehicle in difference a plurality of position location data constantly, reduce the number of times that short message sends, both reduced that the communication load of communication link also makes user's communication cost be reduced in the communication system.
Execution mode is further described the method that the present invention transmits the satellite location data of vehicle below in conjunction with embodiment.
The Surveillance center that is used for of one embodiment of the present of invention monitors the operation and the warning of vehicle, and its requirement obtains the position data (longitude, latitude) and the data such as speed, the direction of motion and time of vehicle when thinking necessary or controlled car alarming in Surveillance center.It is provided with the travelling carriage (MS) of the communication controler that comprises satellite fix (GPS) receiver, wireless digital cell phone note (GSM/SMS) communicator and satellite location data is handled and described short message communication device is controlled on vehicle; Be equipped with wireless digital cell phone short message communication device in Surveillance center.
Think in case of necessity in Surveillance center, the point-to-point SMS service that provides by wireless digital cell phone system short message service center transmits control command to controlled vehicle, or during controlled car alarming, the communication controler of travelling carriage obtains sampling/move instruction, output to satellite positioning receiver is sampled, and with the position data (longitude of vehicle, latitude) and speed, data item such as the direction of motion and time is formed data set and this car code, identifications such as message classification, control information, the regulation that the point-to-point SMS service that provides by wireless digital cell phone system short message service center transmits about short message is made and is become the short message that a total length is no more than 160 ASC-II sign indicating numbers, and then control short message communication device is sent to this short message by the signaling channel of wireless digital cell phone system the short message service center of wireless digital cell phone system.After the short message service center of wireless digital cell phone system is received, this short message is forwarded to the short message communication device of Surveillance center by the signaling channel of wireless digital cell phone system, and Surveillance center receives that this short message is understood and corresponding the processing.
Second embodiment of the present invention is used for Surveillance center the continuous ruuning situation and the warning of controlled vehicle monitored, and it obtains the position data (longitude, latitude) and the data such as speed, the direction of motion and time of vehicle when requiring to think in case of necessity with preset time interval or controlled car alarming in Surveillance center.For example, controlled vehicle is engaged in long-distance transport, predetermined Surveillance center obtained its position longitude (degree, minute, second) every 2 minutes, latitude (degree, minute, second), the speed of a motor vehicle (meter per second), this 5 item number certificate of the direction of motion (degree, minute, second) and time (time, minute, second) obviously returns the data of sampling each time to Surveillance center, not only the communication cost spending is many, and there is no need.Can consider short message of passback in per 20 minutes, the data centralization of sampling for 10 times in a short message.All the other are 2 figure places except that the number of degrees are 3 figure places in the above-mentioned data item, add up to the data of once sampling will use 29 ASC-II sign indicating numbers to express, and in a short message, can not arrange the data of 10 samplings so need to adopt data compression method, make data after the compression satisfy the restrictive requirement of short message format.By analysis, consider that the vehicle maximal rate is 300 kilometers/hour, travel within Chinese territory, the number of degrees can not change in the variable quantity of 2 minutes back warp degree latitudes, known the time of sampling for the first time, the follow-up time determines that also the speed of a motor vehicle and direction might have greatly changed.Arrange the total data item of sampling for the first time in the short message, the warp of subsequent sampling, latitude are sampled and previous difference with this, and the time is record again, and the data that the speed of a motor vehicle, direction are recorded faithfully then each sampling can reach with 17 ASC-II code tables.Arrange like this, article one, 160 ASC-II sign indicating numbers of short message are deducted the data that 25 ASC-II sign indicating numbers of identification control information can be arranged 7 samplings, the data that also can arrange 3 samplings than the data of not doing to compress 4 samplings of direct arrangement so determine the data that each passback is sampled for 7 times more.When taking place to report to the police, only return the data of current sampling.This routine transfer approach is basic identical with aforesaid embodiment, no longer repeats, and below difference is described.
Once transmit when organizing satellite location data: after the communication controler of travelling carriage is received sampling/move instruction more, by per 2 minutes of specified time interval once to satellite positioning receiver output carry out 7 samplings, and with the data designated item: longitude (degree, divide, second), latitude (degree, divide, second), the speed of a motor vehicle (meter per second), the direction of motion (degree, divide, second) and the time (time, divide, second) this 5 item number is according to forming 7 groups of locator data groups, total data item with the first locator data group, and the difference of the numerical value of the notebook data group that takies the more and obligato data item of word bit (refer to longitude and latitude here, dispense time data) that will be scheduled in follow-up each data set and its last data group corresponding data item is as compressing other data item (speed of not doing to compress in the new delivery value in back and this group, direction) forming new (7-1) together organizes data set and is combined in the short message service center that is sent to the wireless digital cell phone system in the short message.Surveillance center receives that the short message service center of wireless digital cell phone system transmits after this short message through interpretation, takes out the data of first data set and calculates data of follow-up each group in view of the above.Surveillance center obtains above-mentioned data and promptly disposes accordingly, as showing or the like on electronic chart.
If in this example, the time interval is 1 minute, the vehicle maximal rate is 100 kilometers/hour, travel within the border such as Hainan Province at the southern china low latitudes, the number of degrees and branch number average can not change in the variable quantity of 1 minute back warp degree latitude, and then the data of each sampling can reach with 13 ASC-II code tables except that first data set.The data that 25 ASC-II sign indicating numbers of 160 ASC-II sign indicating numbers of such short message deduction identification control information can be arranged 9 samplings are Duoed 5 times than the situation of not doing to compress 4 samplings of direct arrangement, and compression effects is more remarkable.
Claims (1)
1. method that transmits the satellite location data of vehicle is characterized in that: it is provided with the travelling carriage of the communication controler that comprises satellite positioning receiver, wireless digital cell phone short message communication device and satellite location data is handled and the short message communication device is controlled on vehicle; Be equipped with wireless digital cell phone short message communication device in Surveillance center, described travelling carriage transmits locator data and receiving control information by the point-to-point SMS service that wireless digital cell phone system short message service center provides to Surveillance center; After the communication controler of travelling carriage is received sampling/move instruction, by specified time interval satellite positioning receiver output is carried out N sampling and the data designated item is formed N group locator data group, will omit data item that can numerical value is known by inference from first data set in the total data item of the first locator data group and follow-up each data set and the difference of the numerical value of the notebook data group of the data item of desire compression and its last data group corresponding data item be organized data set and be combined in the short message service center that is sent to the wireless digital cell phone system in the short message as other data item composition of not doing to compress in the new delivery value in compression back and this group new (N-1); Surveillance center receives that this short message decompresses by principle recited above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011151463A CN1169339C (en) | 2001-07-13 | 2001-07-13 | Method for transmitting satellite location data of vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011151463A CN1169339C (en) | 2001-07-13 | 2001-07-13 | Method for transmitting satellite location data of vehicles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1398101A CN1398101A (en) | 2003-02-19 |
| CN1169339C true CN1169339C (en) | 2004-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011151463A Expired - Lifetime CN1169339C (en) | 2001-07-13 | 2001-07-13 | Method for transmitting satellite location data of vehicles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1169339C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1913441A (en) * | 2005-08-09 | 2007-02-14 | 张永敏 | Continuous changed data set transmission and updating method |
| CN102129078B (en) * | 2010-01-20 | 2013-05-22 | 厦门雅迅网络股份有限公司 | Method for uploading positioning data of vehicles |
| CN103914978A (en) * | 2012-12-31 | 2014-07-09 | 高德软件有限公司 | Vehicle information collection method and apparatus |
| CN104796440B (en) * | 2014-01-17 | 2018-09-14 | 中国电信股份有限公司 | Method and apparatus for sending location data |
| CN104168028A (en) * | 2014-08-08 | 2014-11-26 | 中国人民解放军装甲兵工程学院 | Positioning data compression method and system used for Beidou vehicle-mounted system |
| CN104202078B (en) * | 2014-09-16 | 2018-03-30 | 成都天奥信息科技有限公司 | Satellite mobile communication system subscriber's data transmission method and system |
-
2001
- 2001-07-13 CN CNB011151463A patent/CN1169339C/en not_active Expired - Lifetime
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| Publication number | Publication date |
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| CN1398101A (en) | 2003-02-19 |
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Granted publication date: 20040929 |