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A method for data storage and retrieval of vehicle-mounted terminal

A data storage and vehicle-mounted terminal technology, which is applied in the direction of electric digital data processing, special data processing applications, registration/instruction of vehicle operation, etc., can solve the problems of slow retrieval speed and large storage space, and achieve fast retrieval speed and storage Small space, convenient and quick effect

Active Publication Date: 2018-07-06
AEROSPACE HI TECH HLDG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of large storage space and slow retrieval speed in existing data storage and retrieval methods, the present invention further provides a vehicle-mounted terminal data storage and retrieval method

Method used

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  • A method for data storage and retrieval of vehicle-mounted terminal
  • A method for data storage and retrieval of vehicle-mounted terminal
  • A method for data storage and retrieval of vehicle-mounted terminal

Examples

Experimental program
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specific Embodiment approach 1

[0036] Specific implementation mode one: as figure 1 As shown, this embodiment is described in detail for the realization of a vehicle-mounted terminal data storage and retrieval method:

[0037] 1. Data storage

[0038] accident record

[0039] The recorder should be able to continuously record and store the driving status data corresponding to the 20s real-time time before parking at a time interval of 0.2s. The driving status data includes: vehicle speed, braking and other status signals and position information when parking.

[0040] When the external power supply is disconnected while driving, the recorder should be able to continuously record and store the driving status data of the vehicle within 20s before the power failure at an interval of 0.2s. The driving status data is: vehicle speed, vehicle braking, etc. Status signal and position information at power failure.

[0041] The speed recording unit is km / h, the measurement range is at least 0km / h~220km / h, and the ...

Embodiment

[0073] Using the method of the present invention, for example, to retrieve the suspicious data at 10:32:13 on December 10, 2013, the process is as follows figure 1 shown.

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Abstract

A car-mounted terminal data storage and retrieval method relates to the car-mounted terminal data storage and retrieval technology. The car-mounted terminal data storage and retrieval method aims at solving the problems of large storage space occupation and low retrieval speed of existing data storage and retrieval methods. The car-mounted terminal data storage and retrieval method is technically characterized by comprising a data storage process and a data retrieval process and specifically comprising, when external power supply is cut off during a driving state, continuously recording and storing vehicle driving status data 20 seconds before the power cut-off at a time internal of 0.02 second, wherein the driving status data contain vehicle driving speed, vehicle brake status signals and position information during the power cut-off; when retrieving the data with a certain time, querying the initial byte of a data block as the starting time of the data block. The car-mounted terminal data storage and retrieval method simply requires a 1M FLASH storage chip and accordingly is small in storage space and high in retrieval speed, and can retrieve all the required data in the 1M storage chip within 1 millisecond, thereby being convenient and rapid to use.

Description

technical field [0001] The invention relates to a vehicle-mounted terminal data storage and retrieval technology. Background technique [0002] At present, most of the data storage and retrieval methods of all vehicle terminal manufacturers are in a confidential state. It is understood that they used a data storage chip (4M) with a large amount of data, which takes up a large storage space and virtually increases the corresponding cost. Moreover, the existing storage method has a slow retrieval speed due to the large storage space occupied. It causes inconvenient use and affects the performance of the vehicle-mounted terminal. It is impossible to realize the storage and retrieval functions of the mass data of the vehicle terminal. Contents of the invention [0003] In order to solve the problems of large storage space and slow retrieval speed in existing data storage and retrieval methods, the present invention further provides a vehicle-mounted terminal data storage an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/30G07C5/08
CPCG06F16/245G06F16/90339G07C5/085
Inventor 郑祥滨赵鲁建孙孝武赵现江程少林王永红姜军郝勇
Owner AEROSPACE HI TECH HLDG GROUP