Classifications

• • G—PHYSICS
  • G07—CHECKING-DEVICES
  • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
  • G07C5/00—Registering or indicating the working of vehicles
  • G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
  • G07C5/0841—Registering performance data
  • G07C5/085—Registering performance data using electronic data carriers
• • G—PHYSICS
  • G07—CHECKING-DEVICES
  • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
  • G07C5/00—Registering or indicating the working of vehicles
  • G07C5/008—Registering or indicating the working of vehicles communicating information to a remotely located station

Definitions

• This invention relates to a method for managing data, and more particularly, to a method for managing data of a vehicle traveling data recorder data management system.
• VDRDMS vehicle traveling data recorder data management system
• Smart Card Component a functional entity responsible for communicating with a card reader and a smart card
• vehicle traveling data recorder (VDR) Communication Component a functional entity responsible for providing communication between different components
• User Interface Component a component for interacting between a terminal user and the vehicle traveling data recorder (VDR) system.
• VDR vehicle traveling data recorder
• the system Since the original vehicle traveling data recorder (VDR) device has been removed, the system will inform the user interface component that this data-reading operation cannot be performed. At this time the user interface has to update its status, then the terminal user can perform the previous operation once again to read data from the new vehicle traveling data recorder (VDR) device. That is to say, after the replacement of a vehicle traveling data recorder (VDR) device, the user has to click twice every time to be able to read data from a new vehicle traveling data recorder (VDR) device, and the delayed information updating causes inconveniency to the users.
• VDR vehicle traveling data recorder
• a method for managing data of a vehicle traveling data recorder in which, firstly, a mediator component is set in a vehicle traveling data recorder data management system (VDRDMS) , the mediator component is connected to a smart card component, a vehicle traveling data recorder (VDR) communication component, a database component and a user interface component, and each said component communicates with said other components through said mediator component; secondly, the attributes of said mediator component, said smart card component, said vehicle traveling data recorder (VDR) communication component, said database component and said user interface component are set as active attributes.
• VDRDMS vehicle traveling data recorder data management system
• a process, a set of state variables and a message queue are set for each said component, said process of each component maintains the state variables of the same component, and when any state variable of any said component changes, that component sends a message to inform said mediator component, which message is stored in the message queue of said mediator component, then said mediator component sends a message to inform the other components relevant to that component.
• the process of any other component responds to a message from the message queue of that component, and which message comes from said mediator component or that component itself.
• a message from said mediator component has a higher priority than a message from that component itself.
• VDR vehicle traveling data recorder
• VDR vehicle traveling data recorder
• At least one slice command is set in the communication protocol, which slice command includes a data beginning identifier and a data length identifier.
• Said slice command is an upload speed command of the vehicle traveling data recorder (VDR) .
• a head is added in the data block of at least one command in said command protocol, which head includes a data beginning identifier and a data length identifier.
• the command in said communication protocol is an upload speed command of the vehicle traveling data recorder (VDR) .
• the length of the data beginning identifier and data length identifier is 2 bytes respectively.
• the key point of this invention is that the attributes of the mediator component, smart card component, vehicle traveling data recorder (VDR) communication component, database component and user interface component in the vehicle traveling data recorder data management system (VDRDMS) are all set as active attributes .
• Fig. 1 is an illustrating diagram of the system structure of a vehicle traveling data recorder.
• Fig. 2 is an illustrating diagram of the method for managing data of a vehicle traveling data recorder in this invention.
• VDRDMS vehicle traveling data recorder data management system
• VDR vehicle traveling data recorder
• COM RS232 port serial port
• USB port USB port
• smart card component such as a driver card or a company card
• a user-friendly graphic interface provides to a user data communication, data display
• VDR communication component and the smart card component are device-related software components. Due to the introduction of a mediator component into the vehicle traveling data recorder data management system (VDRDMS) by this invention, the other components such as the vehicle traveling data recorder (VDR) communication component, the smart card component, the database component and the user interface component, all communicate via the mediator component, therefore the mediator component plays the role of a control logic component.
• VDRDMS vehicle traveling data recorder data management system
• the active object mode is used in the vehicle traveling data recorder (VDR) software system.
• VDR vehicle traveling data recorder
• the so-called active object is considered in contrast with a passive object, where the initiation and execution of a process in the passive object is within the same thread, so the initiation of the process in the passive object is synchronized and blocked, and the ordinary objects all belong to the passive ones; while the initiation and execution of a process in an active object are separated and an active object has its own independent execution thread, the initiation of a process in an active object is made by another thread, but the process is executed by its own thread, therefore the initiation of an active object's process is asynchronized and non-blocking.
• VDR vehicle traveling data recorder
• VDR vehicle traveling data recorder
• a mediator component is set in a vehicle traveling data recorder data management system (VDRDMS), and the smart card component, vehicle traveling data recorder (VDR) communication component, database component and user interface component in the vehicle traveling data recorder data management system (VDRDMS) are connected, via the mediator component, to the other components respectively.
• the components have many attributes, such as mobility, reliability and scalability, and according to this invention, these attributes of said mediator component and said other components are set as active attributes.
• VDR vehicle traveling data recorder
• the process of the vehicle traveling data recorder (VDR) communication component will detect this change, and will update the corresponding state of the vehicle traveling data recorder (VDR) communication component to "disconnected”; on the other hand, when another vehicle traveling data recorder (VDR) device is connected, the process of the vehicle traveling data recorder (VDR) communication component will detect this change, and will update the corresponding state of the vehicle traveling data recorder (VDR) communication component to "connected”.
• the vehicle traveling data recorder (VDR) communication component sends a message to inform the mediator component that the vehicle traveling data recorder (VDR) communication component's state is "disconnected” or "connected", and this message is kept in the message queue of the mediator component.
• the mediator component decides which relevant components should be informed. Furthermore, the component relevant to the vehicle traveling data recorder (VDR) communication component is the user interface component, so the mediator component sends a message to inform the user interface component, and this message is kept in the message queue of the user interface component.
• the process of the user interface component receives the message sent from the mediator component, it updates its own state, which is shown by the fact that an originally clickable button now changes to non- clickable (when the corresponding state in the vehicle traveling data recorder (VDR) communication component is updated to "disconnected”) or an originally non-clickable button now changes to clickable (when the corresponding state in the vehicle traveling data recorder (VDR) communication component is updated to "connected”) .
• the vehicle traveling data recorder (VDR) device After the vehicle traveling data recorder (VDR) device has been connected to the PC via a serial port, due to the fact that the attributes of the vehicle traveling data recorder (VDR) communication component are set to active attributes, even if there is no instruction from the terminal user, it would actively upload data from the vehicle traveling data recorder (VDR) device to the PC.
• the uploaded data would be stored first in the buffer area set for the data in the vehicle traveling data recorder (VDR) communication component, and when the mediator component requests the data (for example, when the terminal user requests to view the data) , the vehicle traveling data recorder (VDR) communication component would send the data to the mediator component, and the mediator component in turn would send the data to a corresponding user interface component.
• the data in the buffer area of the vehicle traveling data recorder (VDR) communication component will go on being kept there, just like keeping a backup set locally for the data sent to the mediator component.
• VDR vehicle traveling data recorder
• VDR vehicle traveling data recorder
• VDR vehicle traveling data recorder
• VDR vehicle traveling data recorder
• the process of the vehicle traveling data recorder (VDR) communication component responds to the messages in its own message queue.
• a message may come not only from the mediator component (called as an external message) , but also from the vehicle traveling data recorder (VDR) communication component itself (called as an internal message) .
• the mediator component may request via a message to read the speed data for the last 360 hours, and the vehicle traveling data recorder (VDR) communication component may also request via a message to read the complete logging session data.
• its priority level is below that of the message from the mediator component.
• the second embodiment of this invention is about the time spent during the process of uploading speed data from the vehicle traveling data recorder (VDR) device to the PC.
• VDR vehicle traveling data recorder
• the message coming from the mediator component has a priority lever higher than that of the message coming from the vehicle traveling data recorder (VDR) communication component itself, therefore the message from the mediator component should be executed first.
• VDR vehicle traveling data recorder
• VDR vehicle traveling data recorder
• VDR vehicle traveling data recorder
• VDR vehicle traveling data recorder
• VDR vehicle traveling data recorder
• a sliced upload speed command is added in the original communication protocol. Since the upload speed command is set as a slice command, the slice command includes a data beginning identifier and a data length identifier.
• a head is added to the data block of the original upload speed command in said communication protocol, which head includes a data beginning identifier and a data length identifier. The data beginning identifier and data length identifier are in 2 bytes respectively.
• VDR vehicle traveling data recorder
• the time for the process to respond to the message is Pi; and for this external message, if all the upload data are in the local (PC) buffer area, the time for the process to respond to the message is Ci, and it is know that Ci ⁇ Pi.
• VDR vehicle traveling data recorder
• VDR vehicle traveling data recorder
• the time interval is BT, in the worst case when none of the data are in the local buffer area, the maximum responding time to this external message would be BT+Pi.
• VDR vehicle traveling data recorder
• the response time by the process may sometimes be BT+Pi, but as the connection time becomes longer and longer, the occurrences for the response time by the process to be BT+Pi would be fewer and fewer, and the occurrences of Ci would be more and more, until the time that all the data of vehicle traveling data recorder (VDR) device have been uploaded and the process response time would always be Ci.
• VDR vehicle traveling data recorder

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Traffic Control Systems (AREA)

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• 2005
  • 2005-06-30 CN CNB200510080215XA patent/CN100449550C/zh not_active Expired - Fee Related
• 2006
  • 2006-06-30 BR BRPI0613073-9A patent/BRPI0613073A2/pt not_active Application Discontinuation
  • 2006-06-30 WO PCT/EP2006/063713 patent/WO2007003586A1/en active Application Filing
  • 2006-06-30 EP EP06763974A patent/EP1908026A1/en not_active Ceased

Patent Citations (2)

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