Real time collection storage apparatus used for electric energy computation chip

An electric energy metering chip, real-time acquisition technology, applied in the direction of measuring devices, measuring electrical variables, electrical digital data processing, etc., can solve problems such as not suitable for real-time acquisition and storage of electric energy metering chips, inability to do long-term acquisition, and limited storage capacity. Achieving good scalability, simple design and debugging, and simple effects

Inactive Publication Date: 2009-05-27
VIMICRO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing logic analyzer is mainly used for high-speed acquisition, and its storage capacity is limited, usually less than 1Mbits, so it cannot be used for long-term acquisition, otherwise it will cause data loss, resulting in errors in results
If you choose a logic analyzer with a large storage capacity, its cost is too high, and it is not suitable for real-time acquisition and storage of electric energy metering chips.

Method used

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  • Real time collection storage apparatus used for electric energy computation chip
  • Real time collection storage apparatus used for electric energy computation chip
  • Real time collection storage apparatus used for electric energy computation chip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] In this embodiment, the interface modules are serial-to-parallel conversion and I 2The module of S sending module combination is realized by programmable logic array (FPGA, Field Programmable Gate Array) or complex programmable logic device (CPLD, Complex Programmable Logic Device); The receiving module in the processor is I 2 S receiving module.

[0041] Figure 4 It is a schematic structural diagram of a real-time acquisition and storage device for an electric energy metering chip according to Embodiment 1 of the present invention. see Figure 4 , the device mainly consists of serial-to-parallel conversion, I 2 S sending module, processor and digital memory card. Among them, serial-to-parallel conversion, I 2 The S sending module, the processor and the digital memory card form a real-time collection and storage module. Among them, the processor includes I 2 S receiving module, central processing unit (CPU) and digital memory card controller.

[0042] exist F...

Embodiment 2

[0049] In this embodiment, the interface module is I 2 S transmit module, processor including I 2 S receiving module

[0050] If the data output by the analog-to-digital conversion used by the electric energy metering chip is parallel data, the real-time acquisition and storage device used for the electric energy metering chip such as Figure 7 shown. see Figure 7 , the parallel data output by the analog-to-digital conversion of the electric energy metering chip is directly input to the I 2 S sending module. Its subsequent working principle is the same as that of the device in Embodiment 1, and will not be repeated here.

[0051] In this example, I 2 The S sending module is also realized by the programmable logic array FPGA / CPLD with adjustable data length and frequency of the control signal, adapting to the process of analog-to-digital conversion and output parallel data of electric energy metering chips with different code rates, which is the same as in the first embo...

Embodiment 3

[0053] Figure 8 Shown is a schematic structural diagram of a real-time acquisition and storage device for an electric energy metering chip in Embodiment 3 of the present invention, see Figure 8 , the difference from the previous two embodiments is that the real-time collection and storage device for the electric energy metering chip in this embodiment further includes a USB interface module. The processor reads the collected data stored in the digital memory card through the digital memory card controller, and transmits it to the PC through the USB interface module.

[0054] The processor of the present invention may be any system-on-chip (SOC) or embedded processor including a receiving module and a digital memory card controller.

[0055] The digital storage card of the present invention can be a secure data storage (SD) card. Multimedia Message Storage (MMC) card or Compact Flash (CF) card. The card reader is a dedicated card reader for digital memory cards, such as a ...

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PUM

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Abstract

This invention discloses one real time collection memory device for energy meter chip, which comprises interface module, processor and digital memory card, wherein, the said interface module receives energy meter chip input data and outputs data into processor; the said processor comprises digital memory card controller and receive module with relative mouth; the said receive module is to receive input data; the processor is to store digital memory controller into digital memory card.

Description

technical field [0001] The invention relates to data collection and storage technology, in particular to a real-time collection and storage device for electric energy metering chips. Background technique [0002] With the development of power electronics technology, electronic energy meters have been widely used because of their multi-functional and intelligent advantages. [0003] figure 1 Shown is the system structure diagram of the electric energy metering chip. see figure 1 , The energy metering chip is composed of amplifier, analog-to-digital conversion, decimation filter, multiplier and digital-frequency conversion. The current generates differential signals V_I+ and V_I- through the sampling resistor connected to the neutral line, and the voltage generates differential signals V_V+ and V_V- through the voltage dividing resistor connected to the live wire; these differential signals are amplified by the amplifier and converted into digital by analog-to-digital conve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R22/06G01R22/10G06F3/08G06F13/38
Inventor 杨作兴
Owner VIMICRO CORP
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