CN103679410A - Method for managing logistics information of fresh agricultural products based on Android system - Google Patents
Method for managing logistics information of fresh agricultural products based on Android system Download PDFInfo
- Publication number
- CN103679410A CN103679410A CN201210344286.6A CN201210344286A CN103679410A CN 103679410 A CN103679410 A CN 103679410A CN 201210344286 A CN201210344286 A CN 201210344286A CN 103679410 A CN103679410 A CN 103679410A
- Authority
- CN
- China
- Prior art keywords
- data
- fresh
- information
- android system
- agricultural product
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Traffic Control Systems (AREA)
Abstract
The invention discloses a method for managing the logistics information of fresh agricultural products based on an Android system. According to the logistics process of the fresh agricultural products, a logistics process real-time Android system for a mobile phone side is developed and formed so as to track and manage the logistics process of the fresh agricultural products in real time, thereby increasing the transport efficiency of the agricultural products. A logistics process real-time monitoring system comprises a fresh agricultural product humiture detecting subsystem, a vehicle speed and route information collecting subsystem, a wireless data transmission subsystem and a logistics process data processing subsystem based on the Android system. The whole logistics process of the fresh agricultural and sideline products is monitored and managed by a GPS (Global Positioning System) technology, a ZigBee technology, a GPRS (General Packet Radio Service) network and the Internet, the transport efficiency of the agricultural and sideline products is increased, and a service is provided for the market access system and the source tracing mechanism of the agricultural products.
Description
Technical field
The present invention relates to a kind of commodities-circulation information management of the Android of utilization technology.
Background technology
" fresh " be the life of agricultural product and be worth place, because the water cut of fresh and live agricultural product is high, freshness date is short, very easily rots, and greatly limited transport pathway and exchange hour, therefore conevying efficiency and fresh-keeping condition had high requirements." fresh and live agricultural product logistics progress real-time monitoring system " project is followed the tracks of transporting the logistics vehicles of fresh and alive agricultural byproducts, comprises the information such as storing temperature, humidity of information of vehicles, current location, speed per hour, agricultural byproducts.By the state of product from the place of production to each large wholesale market transportation of the whole nation is monitored, guarantee that fresh and alive agricultural byproducts are without prejudice in transit, reduce transportation loss.Meanwhile, based on this, set up market access rule and trace to the source mechanism, forbidding that in-problem fresh and alive agricultural byproducts come into the market to sell, if there is problem, also can trace to source.
The logistics progress of agricultural byproducts is from the place of production loading of agricultural byproducts beginnings of setting out, and through haulage vehicle driving process, until agricultural byproducts arrival destination, then sales situation fed back to the place of production, completes logistics transportation process one time.Logistics progress real-time monitoring system need to be monitored and tracing management in real time to whole logistics progress.
Agricultural byproducts haulage vehicle spatially has movability, vehicle scattered band is wide, quantity is many, distance, also likely by way of remote location, should not be subject to regional limits; There is in time real-time, and require long-term operation continuously.But the on-site staff of wholesale market of agricultural products must realize omnidistance Real-Time Monitoring and supervision to the temperature and humidity information of the agricultural product in each haulage vehicle and relevant information, could ensure that agricultural byproducts can be not improper and rotten because of Temperature and Humidity Control in transportation, thereby reduce unnecessary waste, guarantee agricultural quality safety.
Android system is a set of explorative mobile device comprehensive platform truly, and it comprises operating system, middleware and the platform application that some are crucial.Android is the open source software consisting of Linux+Java, allows all manufacturers and individual to develop on its basis.The features such as opening of Android platform can promote the technology innovation of (comprising platform itself), contribute to again to reduce cost of development, can also be the products specializing that operator can formulate oneself easily.Therefore, it has very large market development potentiality.
A kind of commodities-circulation information management based on Android system is provided, can fully meets fresh and live agricultural product loglstics enterprise business demand, greatly improve the efficiency of management of Zhe Lei enterprise.
Summary of the invention
The object of the invention is to be to provide the fresh and live agricultural product logistics progress real-time monitoring system (as shown in Figure 1) based on Android technology, wherein, environmental parameter acquisition module and car-mounted terminal subsystem are mounted on transportation equipment, environment acquisition module is responsible for detecting in real time the temperature and humidity information of the article that transport, and regularly the information exchange of collection is crossed to ZigBee communication protocol passes to car-mounted terminal.The integrated GPS module of car-mounted terminal, ZigBee wireless module and GPRS communication module, be responsible for that the temperature humidity information exchange of GPS information, reception is crossed to GPRS module and pass to Android system.Radio communication subsystem is responsible for receiving GPRS information and the form that the data of GPRS network are converted into Internet network is passed to Android system.Logistics progress Android system is the brain of whole system, is responsible for all logistics progresses to monitor and manage, and finds and reports extremely, regularly the information of collecting is stored in SQL Server2000 database simultaneously.
According to the feature of fresh and live agricultural product logistics progress, particular content is as follows:
Environmental parameter acquisition module and car-mounted terminal subsystem are mounted on transportation equipment, and environment acquisition module is responsible for detecting in real time the temperature and humidity information of the article that transport, and regularly the information exchange of collection is crossed to ZigBee communication protocol passes to car-mounted terminal.The integrated GPS module of car-mounted terminal, ZigBee wireless module and GPRS communication module, be responsible for that the temperature humidity information exchange of GPS information, reception is crossed to GPRS module and pass to Android system.Radio communication subsystem is responsible for receiving GPRS information and the form that the data of GPRS network are converted into Internet network is passed to Android system.Logistics progress Android system is the brain of whole system, is responsible for all logistics progresses to monitor and manage, and finds and reports extremely, regularly the information of collecting is stored in SQL Server2000 database simultaneously.
Environmental parameter acquisition subsystem is mainly arranged in transport vehicle, gathers in real time the temperature and humidity information data of the fresh and live agricultural product transporting, and in time these data transmission is arrived to car-mounted terminal subsystem, is convenient to Real-time Feedback to logistics progress Android system.Environmental parameter acquisition subsystem is very part and parcel of whole fresh and live agricultural product logistics progress supervisory system, is responsible for detecting in real time the temperature and humidity of fresh and live agricultural product transportation, and sends to car-mounted terminal by ZigBee Small Area Wireless Communication Networks.Humiture detection system is comprised of Temperature Humidity Sensor and ZigBee short-distance wireless module two parts.Temperature Humidity Sensor is positioned in the conveying carriage of sealing, Temperature Humidity Sensor collects after temperature information and humidity information, by MCU, pass in real time ZigBee wireless communication module, ZigBee wireless communication module is crossed wireless network by these information exchanges and is sent to the car-mounted terminal in driving cabin, and car-mounted terminal will directly be transferred to logistics progress Android system by GPRS network after vehicle-state (speed of a motor vehicle, the position) information package of these information and the acquisition of GPS module.
Car-mounted terminal subsystem is an embedded platform based on ARM, and it comprises ZigBee wireless communication module, GPS module and GPRS module.Its function mainly provides the various status informations of the means of transport of transportation fresh and live agricultural product, comprises the various environmental parameter information of vehicle location information and means of transport.Its locating information is to obtain by GPS module, by GPRS module, sends to server, equally also can to server, send various requests by TCP/IP socket, obtains corresponding service.Meanwhile, the environmental parameter information that car-mounted terminal reception environment parameter acquisition module is come by Zig-Bee wireless network transmissions, sends to logistics progress Android system by GPRS after treatment.Used herein is the ARM7LPC2100 series of Philips company, the GPRS module model that the GPRS expansion module of ARM embedded development platform adopts is SIM3000, and the reception of GPS locating information employing is the GPS15L/H receiver that Garmin company produces.
Radio communication subsystem is actually the data transmission channel that is based upon transport vehicle and logistics progress Android system, movability, dispersiveness due to transport vehicle, consider communications cost and reliability simultaneously, adopt GPRS communication to realize wireless system for transmitting data.The service that radio communication subsystem can rely on China Mobile or UNICOM to provide, but Android system access is Internet network, and data need to be carried out certain processing conversion from GPRS network to Internet network.
Car-mounted terminal sends to packet message GPRS serving GPRS support node (SGSN) from base station by GPRS, SGSN and GGSN (GGSN) communicate.GGSN processes accordingly to integrated data, re-sends to object network, as the Internet or network X.25.The IP bag that has transfer table address from the Internet sign, is received by GGSN, then is forwarded to SGSN, is then sent on transfer table.SGSN is a node in GSM network structure, it and the same layer of MSC in the network system.SGSN is connected with BTS by frame relay, is the interface between GSM network structure and transfer table.The Main Function of SGSN is the current location information of record move platform, and between transfer table and GGSN, completes the sending and receiving of mobile packet data.GGSN is connected to SGSN by the GPRS backbone network based on IP agreement, is the gateway that connects GSM network and external packet-switched networks.By GGSN, the GPRS packet data package in GSM net is carried out to protocol conversion, thereby these packet data package can be sent to the TCP/IP of far-end or network X.25.
Logistics progress Monitor And Control Subsystem, as the nerve center of whole system, is responsible for receiving the data of sending from radio communication subsystem and carrying out real-time processing and demonstration, forms operation interface intuitively and is convenient to logistics progress to monitor and manage.This subsystem completes with the real-time radio of car-mounted terminal and communicates by letter, SQL Server2000 database storage, humiture curve shows and the function such as humiture Realtime Alerts.First logistics progress Android system can receive and send fresh and live agricultural product real time humiture and relevant information data bag; GPRS network is sent to Internet network by GGSN by message, as long as the server of logistics center has the IP address of a public network just can obtain this information.Then Android system subsystem carries out relevant treatment and real-time storage in the SQL Server2000 database of backstage all information that receive; End user can carry out the operations such as humiture curve intuitively shows, electronic chart demonstration, SQL Server2000 data base querying and the remote parameter of vehicle position information arrange by the software interface of Android system subsystem.
Accompanying drawing explanation
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is process flow diagram of the present invention.
Fig. 2 is implementing procedure figure of the present invention.
Embodiment
In conjunction with Fig. 2, Benq is in the fresh and live agricultural product logistic information systems of Android technology specifically, and this information system platform comprises data packet transceive and processing module, SQL Server2000 database management module and Android interface module.
1 data packet transceive and processing module
Data packet transceive and processing module are mainly responsible for obtaining the information data from wireless terminal from Internet.What during design, must consider is the movability of vehicle, and how can in real time data be sent to the problems such as Android system server.
When car-mounted terminal need to transmit data, first the packing of collected information data being carried out based on TCP/IP is processed, packing data later send data to nearest BSS (base station sub-system) by GSM network, BSS can communicate by letter with nearest SGSN, thereafter SGSN sends to GGSN by GPRS network by data, at GGSN, this packet is carried out after relevant treatment, these data are sent to Internet or network X.25.The IP packet entering on Internet can be transferred to logistics progress Android system at an easy rate.Therefore, the transmitting-receiving of Android system data bag and processing module only need consider to receive and process the IP packet from Intenet.
Data frame format design
Native system major function is to record the state of agricultural byproducts, and the data volume of each transmission is little and sudden strong, therefore adopts udp protocol transmission data.Meanwhile, because udp protocol is insecure host-host protocol, the security mechanism that it does not provide data to transmit, must add the affirmation mechanism that ensures communication reliability while therefore realizing.In native system, when Android system sends data to terminal, require terminal to return and receive correct or wrong confirmation, after Android system is received correct confirmation, data down transmission process is just complete.Otherwise Android system will be retransmitted in official hour, until receive that correct confirmation or transmission times sign overflow just termination.
Topmostly in data packet transceive and processing module design implementation procedure exactly packet is operated, car-mounted terminal and logistics progress Android system are in interactive communication process, and related general data frame type comprises:
Gps data bag: gps data bag is that the GPS information being obtained by the GPS module on car-mounted terminal is given after car-mounted terminal, is encapsulated by the program on car-mounted terminal.
Car-mounted terminal log-on message frame: need first to register in Android system after car-mounted terminal start, only have registration by carrying out tracing and managing in real time to car-mounted terminal by Android system, vehicle-mounted log-on message is exactly by car-mounted terminal, to be sent to the message of Android system request registration.
Car-mounted terminal client login frame: after car-mounted terminal login, operating personnel need to use the user ID of oneself to sign in to Android service system by car-mounted terminal, and Android system realizes the associated of car-mounted terminal and client according to this information.
Car-mounted terminal sends registration merchandise news frame: in logistics starting point, the information exchange of transporting cargo need to be crossed to car-mounted terminal and be sent to Android system.If this information spinner carries out associated by transporting cargo with car-mounted terminal.In information, can comprise the needed temperature and humidity restriction of freight transportation, Android system judges that according to this information whether the real-time traffic condition of goods meets the demands, if crossed the border, can give the alarm.
Car-mounted terminal sends geographic position frame: car-mounted terminal can be inquired about the positional information at own place in real time, this information exchange is crossed car-mounted terminal and is reported GPS information acquisition to Android system, Android system obtains the title of car-mounted terminal position according to GPS information inquiry GIS map SQL Server2000 database, then passes to car-mounted terminal.Car-mounted terminal just can be known the haulage vehicle title of geographic location at that time like this.
The unified ascii character that adopts of data layout that Various types of data frame arranges is used short message mode transmission simultaneously in the situation that of GPRS/CDMA network no signal, and the formal definition of messaging format and Frame is consistent.
The transmitting-receiving of packet
When mobile terminal sends data by GPRS network to Android system, end application will be first to data encapsulation, then sends by AT order control GPRS module.Step during specific implementation is as follows:
(1) data are carried out to UDP encapsulation, the information data to be sent collecting are put in the data segment of UDP form, this frame UDP message is calculated by rule together with 8 byte header messages, generate UDP verification and, complete UDP message encapsulation.
(2) according to I P agreement for this reason frame UDP set up the IP head of 20 bytes, IP head is carried out to verification calculating, draw the proof test value of IP head, complete IP encapsulation.
(3) complete PPP encapsulation, the tab character of PPP form is 0x7E, first data will be checked before carrying out PPP encapsulation in, whether there is tab character, when running into character 0x7E, transmit continuously 2 character 0x7D and 0x5E, to realize the escape of tab character, when running into ESC 0x7D, transmit continuously 2 character 0x7D and 0x5D, to realize the escape of ESC.
(4) data are put into the message segment of PPP frame format, generated CRC check, complete PPP encapsulation.
(5) terminal is controlled GPRS module by AT order and to network, is sent out PPP and call out, and sets up PPP communication link and connects, and send packaged data.
The processing of packet
After receiving packet, according to the difference of type of data packet, choose corresponding treatment scheme.If ACK bag is to belong to take over party after oneself correctly receiving the packet that transmit leg sends out, confirm packet for one that feeds back to; And for normal packet, will call the relevant procedure function that unpacks.According to the type of the bag of receiving then enter related process module, for the every terms of information data that collect in whole logistics progress by real-time storage in the middle of SQL Server2000 database.
If there is the message that will send, can pass through Android system upper procedure, according to the packaged rear transmission interface function that directly calls of frame format, send.Certainly Android system also can initiatively be sent request, so just can directly call the encapsulation that transmission processing is carried out message, then calls transmission function and sends.
2 data memory modules
Data memory module is resolved verification by the packet reading, if verification correctly will deposit backstage SQL Server2000 database in real time in, and send and to feed back to GPRS terminal, the indication that can be used for that real time humiture curve map shows, real time data shows and humiture is reported to the police.
3Android interface module
Andro id interface module is divided into a plurality of functional modules, and the human-machine operations such as statistical study, SQL Server2000 data base querying and data management and user management of wherein real time humiture curve demonstration, data complete based on SQL ServetSQL Server2000 Database Events trigger mechanism.The communication of software starts, closes service and car-mounted terminal and humiture collection module parameter, and interface operation is set etc. is that the transmission function of calling communication dynamic link library completes.
A kind of fresh and live agricultural product commodities-circulation information management based on Android technology disclosed by the invention, inquiry for farm produce production base, processing workshop and transit information etc. is comparatively simple, transinformation is little, but transmission frequency is high, requirement of real-time high, user interface is moved in client, SQL Server2000 database is placed on server, under this structure, simplify and standardization client, user is needed is that browser is installed, and does not need professional client software.Improve the efficiency of agricultural product logistics work, reduced the cost of Agricultural Products Enterprise operation.
Embodiment in the present invention, only for the present invention will be described, does not form the restriction to claim scope, and other substituting of being equal in fact that those skilled in that art can expect, all in protection domain of the present invention.
Claims (5)
1. the fresh and live agricultural product commodities-circulation information management based on Android system, it is characterized in that: by being arranged at the relevant parameter of sensor collection on haulage vehicle, again these parameters are transferred to car-mounted terminal, again by car-mounted terminal, the geographical location information at these parameters and haulage vehicle place being sent to Surveillance center, Surveillance center turns back to related data Android mobile phone terminal again, and being convenient to provides for user the service that shows and inquire about.
2. a kind of fresh and live agricultural product commodities-circulation information management based on Android system according to claim 1, it is characterized in that the relevant parameter of sensor collection on haulage vehicle passes to car-mounted terminal by ZigBee communication protocol, in the integrated GPS module of car-mounted terminal, ZigBee wireless module and GPRS communication module, relevant information is passed to Surveillance center by GPRS module, and radio communication subsystem is responsible for receiving GPRS information and the form that the data of GPRS network are converted into Internet network is passed to Surveillance center.
3. a kind of fresh and live agricultural product commodities-circulation information management based on Android system according to claim 2, it is characterized in that first car-mounted terminal carries out collected information data the packing processing based on TCP/IP, packing data later send data to nearest BSS (base station sub-system) by GSM network, BSS can communicate by letter with nearest SGSN, thereafter SGSN sends to GGSN by GPRS network by data, at GGSN, this packet is carried out after relevant treatment, these data are sent to Internet or network X.25.The IP packet entering on Internet can be transferred to logistics progress Android system at an easy rate.Therefore, the transmitting-receiving of Android system data bag and processing module only need consider to receive and process the IP packet from Intenet.
4. a kind of fresh and live agricultural product commodities-circulation information management based on Android system according to claim 3, it is characterized in that car-mounted terminal adopts udp protocol transmission data, when Surveillance center sends data to terminal, require terminal to return and receive correct or wrong confirmation, after Android system is received correct confirmation, data down transmission process is just complete.Otherwise Android system will be retransmitted in official hour, until receive that correct confirmation or transmission times sign overflow just termination.
5. the device used of a kind of fresh and live agricultural product commodities-circulation information management based on Android system described in claim 1 to 4 is comprised of smart mobile phone, ZigBee receiver, temperature sensor, humidity sensor and the GPS sensor assembly etc. of Android platform, mainly carry out the work such as the detection of fresh and live agricultural product humiture, the collection of car speed route information, Wireless Data Transmission and logistics progress Surveillance center data processing, it is characterized in that:
(1) infosystem interface is good.The resource of integrated different sub-systems, is convenient to arrangement and the use of fresh and live agricultural product logistics information.
(2) integrate fresh and live agricultural product logistics resource.Various fresh and live agricultural product logistics data information, by certain uniform format, is stored after conversion, issued, become the hinge of agricultural product logistics information.
(3) whole fresh and live agricultural product information platform is stable, easy to use, is easy to safeguard.
Smart mobile phone according to claim 1 is the smart mobile phone based on Android platform.
Fresh and live agricultural product logistic information systems based on Android technology according to claim 1 comprises data packet transceive and processing module, SQL Server2000 database management module and Android interface module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210344286.6A CN103679410A (en) | 2012-09-17 | 2012-09-17 | Method for managing logistics information of fresh agricultural products based on Android system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210344286.6A CN103679410A (en) | 2012-09-17 | 2012-09-17 | Method for managing logistics information of fresh agricultural products based on Android system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103679410A true CN103679410A (en) | 2014-03-26 |
Family
ID=50316886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210344286.6A Pending CN103679410A (en) | 2012-09-17 | 2012-09-17 | Method for managing logistics information of fresh agricultural products based on Android system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103679410A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105930990A (en) * | 2016-03-22 | 2016-09-07 | 青岛农业大学 | Logistics real-time monitoring system for fresh agricultural products |
| CN108563157A (en) * | 2018-01-10 | 2018-09-21 | 淄博职业学院 | System is monitored based on Internet of Things vehicular agricultural products in distribution process |
| CN110609842A (en) * | 2019-09-19 | 2019-12-24 | 中国银行股份有限公司 | Message composition method and system |
| CN112291731A (en) * | 2020-10-23 | 2021-01-29 | 金陵科技学院 | Give birth to bright cold chain detecting system based on big dipper location |
| CN113780963A (en) * | 2021-11-15 | 2021-12-10 | 江西五十铃汽车有限公司 | Transportation management method, system, storage medium and equipment for commodity vehicle |
-
2012
- 2012-09-17 CN CN201210344286.6A patent/CN103679410A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105930990A (en) * | 2016-03-22 | 2016-09-07 | 青岛农业大学 | Logistics real-time monitoring system for fresh agricultural products |
| CN108563157A (en) * | 2018-01-10 | 2018-09-21 | 淄博职业学院 | System is monitored based on Internet of Things vehicular agricultural products in distribution process |
| CN110609842A (en) * | 2019-09-19 | 2019-12-24 | 中国银行股份有限公司 | Message composition method and system |
| CN110609842B (en) * | 2019-09-19 | 2022-02-22 | 中国银行股份有限公司 | Message composition method and system |
| CN112291731A (en) * | 2020-10-23 | 2021-01-29 | 金陵科技学院 | Give birth to bright cold chain detecting system based on big dipper location |
| CN113780963A (en) * | 2021-11-15 | 2021-12-10 | 江西五十铃汽车有限公司 | Transportation management method, system, storage medium and equipment for commodity vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101554878B (en) | System for realizing remote monitoring of integrity of train and method | |
| CN102316498B (en) | Automatic test method and system for wireless network | |
| CN105025077A (en) | Vehicular Internet of Things operation system based on cloud computing | |
| CN103679410A (en) | Method for managing logistics information of fresh agricultural products based on Android system | |
| CN204633813U (en) | A kind of vehicle-mounted Internet of Things operation system based on cloud computing | |
| Chung et al. | Experiments of A LPWAN tracking (TR) platform based on Sigfox test network | |
| CN202444627U (en) | Dual-channel vehicle-mounted information service system | |
| CN203870689U (en) | Monitoring system on basis of Beidou positioning system for internet of vehicles | |
| CN102882964A (en) | Vehicle-mounted equipment implementation method for managing GYK running state data | |
| CN202067405U (en) | Personnel and vehicle dispatching monitoring system | |
| CN104240022A (en) | Agricultural machine vehicular terminal and agricultural machine dispatching method, system and server | |
| CN114302332B (en) | Positioning system and method based on Beidou No. three and space-time satellite narrowband data broadcasting | |
| CN208298009U (en) | A kind of vehicle-mounted V2X device, vehicle and system | |
| CN108762129A (en) | Multimode adaptively perceives the cold chain things system of transmission | |
| CN107067791A (en) | A kind of GPS terminal, vehicle information management system and its data processing method | |
| CN114302322B (en) | Novel high-precision positioning navigation system and method based on Beidou+5G | |
| CN103207593A (en) | Vehicle ship device monitoring and dispatching system based on 4G and Beidou communication technology | |
| CN201910135U (en) | Stop announcement system for public traffic bus | |
| CN106292439B (en) | Based on internet vehicle in way monitoring management system | |
| Li et al. | Design and accomplishment of the real-time tracking system of agricultural products logistics process | |
| CN203268063U (en) | Railway train approaching intelligent safety alarm system | |
| CN210912457U (en) | Intelligent protection communication system for railway construction | |
| CN202330726U (en) | Dynamic monitoring system for moving article | |
| Mohamed | A Proposed Model for Radio Frequency Systems to Tracking Trains via GPS (The Study for Egyptian National Railways) | |
| CN105510947A (en) | Vehicle-mounted positioning terminal and vehicle-mounted positioning method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140326 |