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Recording device and method of single machine working time

A technology of working hours and recording devices, which is applied in hardware monitoring, instruments, electrical digital data processing, etc., can solve the problems of unguaranteed data reliability, achieve reliable recording and reduce costs

Active Publication Date: 2014-08-27
BEIJING INST OF SPACE LAUNCH TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It provides a recording device for the working time of a single machine, which solves the technical problem that the data reliability of the working time of a single machine directly stored in the FRAM memory is not guaranteed.

Method used

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  • Recording device and method of single machine working time
  • Recording device and method of single machine working time
  • Recording device and method of single machine working time

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0061] In this embodiment, a recording device for stand-alone working time is formed based on the FRAM that establishes a data connection with the CPU.

[0062] like figure 1 As shown, the processor 01 and the FRAM memory 02 are connected through the SPI communication bus 03, and a recording device is set in the FRAM memory 02. A CAN bus interface for time information query is set between the FRAM memory 02 and the processor 01.

[0063] like figure 2 As shown, the recording device includes setting a stand-alone working time storage area 011 in the FRAM memory 02. The stand-alone working time storage area 011 is composed of a first storage unit 111, a second storage unit 112 and a third storage unit 113. Each storage unit consists of It consists of four 8-bit bytes B.

[0064] like image 3 As shown, a number of stand-alone working time storage areas 011 are set in the FRAM memory 02 to form a queue of stand-alone working time storage areas (the addressing pointer logical...

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PUM

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Abstract

The invention discloses a recording device of single machine working time. The recording device comprises an FRAM storage. First data connection is established between the FRAM storage and a processor through an SPI communication bus. Second data connection is established between the FRAM storage and an upper system through a CAN communication bus. The recording device for storing single machine working time is established in the FRAM storage. The upper system inquires working time data through the CAN communication bus. The processor stores the single machine working time data through the SPI communication bus. According to the recording device of the single machine working time, a recording method of the single machine working time is achieved through a nonvolatile memory, and reliable recording on the single machine working time can be achieved. Meanwhile, single machine cost is lowered, and the reliability of a single machine cannot be affected. The invention further discloses the recording method of the single machine working time.

Description

technical field [0001] The present invention relates to a data storage device and method, in particular to a long-term data storage device and storage method. Background technique [0002] Stand-alone working time data is of great significance to system startup, restart, and startup. Usually, the storage of stand-alone working time uses traditional hardware timers, which need to be powered for the timer and installed on the surface of the stand-alone shell, which increases hardware costs and reduces Stand-alone reliability. And existing stand-alone all has non-volatile memory, by the non-volatile memory that stand-alone has, realizes stand-alone working time recording function without changing existing stand-alone and increasing hardware timer just can realize working time recording function. [0003] Non-volatile memory is the abbreviation of a series of memories that can save data after power failure, including EEPROM, Flash, FRAM and other memories. EEPROM and Flash nee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/34G06F13/16
Inventor 李向阳张向文张洪彬刘显勤王小军
Owner BEIJING INST OF SPACE LAUNCH TECH