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A method for remotely upgrading data packets with variable number of packets for an electric meter

A remote upgrade and data packet technology, which is applied in the fields of electrical digital data processing, software engineering design, instruments, etc., can solve the problems of longer transmission time, low efficiency of remote upgrade, and a lot of time spent saving and copying invalid data packets, etc., to achieve The effect of improving transmission efficiency and saving communication transmission time

Inactive Publication Date: 2019-03-26
NINGBO SANXING INTELLIGENT ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] This solution does not detect the invalid data packets of the target code, so that the invalid data packets are also transmitted, which leads to a longer transmission time to a certain extent, and the electric meter generally saves and copies all the transmitted data directly, which makes the electric meter MCU It also takes a lot of time to save and copy invalid data packets, resulting in very low remote upgrade efficiency

Method used

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  • A method for remotely upgrading data packets with variable number of packets for an electric meter
  • A method for remotely upgrading data packets with variable number of packets for an electric meter

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Embodiment Construction

[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0025] like Figure 1-2 As shown in the figure, it is a flow chart of the method for remotely upgrading the data packets with variable length of the electric meter according to the present invention. This method corresponds to the master station and the electric meter to be upgraded. The principle of the variable-length data packet remote upgrade of the present invention is that the compiler chooses to fill the unused program space with 0xFF before generating the machine code, and the CRC checksum of the machine code is always placed in...

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Abstract

The invention relates to a method for remotely upgrading data packets with variable number of packets for an electric meter, the method judges the validity of the upgrade program object code data packet in real time by the master station, The invalid data packet is not sent any more, and the data packet which is not sent by the master station is uniformly initialized to 0xFF at the meter end, andis no longer saved and copied, thus saving a large amount of communication transmission time and reading and writing time of the external Flash and the internal Flash of the MCU, and improving the upgrading efficiency.

Description

technical field [0001] The invention relates to the field of electronic data upgrades, in particular to a remote upgrade method for electric meters with variable length data packets. Background technique [0002] The existing energy meter data upgrade mainly adopts the following method. After the master station converts the entire machine code generated by the compiler into the upgrade target code, then divides the target code into packets according to the size of the communication buffer, and then transmits all data packets to the The meter is stored in the external Flash, and finally the meter copies the upgrade data stored in the external Flash to the internal Flash of the MCU to complete the code upgrade. [0003] This solution does not detect the invalid data packets of the target code, so that the invalid data packets are also transmitted, which leads to a longer transmission time to a certain extent, and the electric meter generally saves and copies all the transmitte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F8/654
CPCG06F8/654
Inventor 何涛郜波章跃平孟令超孙溪童王竹
Owner NINGBO SANXING INTELLIGENT ELECTRIC