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High-speed multi processor spnchronous sampling equipment and its sampling method

A synchronous sampling and multi-processor technology, applied in the direction of electrical digital data processing, instruments, etc., can solve the problems of sampling speed and the number of signal channels to be collected, limited processing capacity, and unsynchronized signals

Inactive Publication Date: 2004-10-20
SHANGHAI NANRI INDAL
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Problems solved by technology

However, due to the limited processing capacity of the single-CPU synchronous sampling technology, this technology has always been unable to solve the contradiction between the sampling speed and the number of signal channels to be collected. When the number of data channels required for synchronous sampling increases, the sampling speed has to be sacrificed to reduce the sampling frequency. Finally, the resolution is reduced; while the multi-processor asynchronous sampling technology solves the shortcoming of insufficient processing power of a single CPU, but because the signals cannot be synchronized

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  • High-speed multi processor spnchronous sampling equipment and its sampling method
  • High-speed multi processor spnchronous sampling equipment and its sampling method
  • High-speed multi processor spnchronous sampling equipment and its sampling method

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Embodiment Construction

[0008] Such as figure 1 and figure 2 As shown, the high-speed multi-processor synchronous sampling device and sampling method thereof of the present invention, the high-speed multi-processor synchronous sampling device and sampling method thereof are composed of at least two acquisition units 1, which are characterized in that between the acquisition units 1 Connected through the synchronization bus 2 and synchronized through the synchronization bus 2, each of the acquisition units 1 is exactly the same. During work, one of the acquisition units 1 is set as the main sampling unit, and the remaining acquisition units The unit is set as a slave sampling unit, and the main sampling unit regularly outputs sampling pulses to the synchronous bus 2, and the pulses are used to drive all sampling units 1 through the synchronous bus 2 to perform synchronous sampling. The sampling period can be adjusted by programming the main sampling unit, so that Make all sampling units 1 use the sa...

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Abstract

The sampling device is composed of at least two collectors. Characters are that synchronization between collectors is implemented through synchronous bus. In operation, main collector sends sampling pulse to synchronous bus timely. The sampling pulse through bus drives all collectors to carry out synchronous sampling so as to ensure synchronous sampling between collectors. Each collector is composed of CPU, DSP and A / D converter.

Description

Technical field: [0001] The invention relates to an electronic device, in particular to a signal processing device applied in the field of electric power automation, in particular to a high-speed multi-processor synchronous sampling device and a sampling method thereof. Background technique: [0002] In the prior art, digital signal sampling technologies widely used in electric power automation equipment mainly include two methods: single CPU (CPU) synchronous sampling and multi-processor asynchronous sampling. Single-CPU synchronous sampling technology usually uses a single CPU to cooperate with analog / digital conversion devices to complete the acquisition and processing of analog quantities, which can realize synchronous sampling of multiple channels of data. In order to improve the processing capability, DSP is usually used to process digital signals with CPU. However, due to the limited processing power of a single CPU, this technology has always been unable to solve th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/42
Inventor 孙国城徐晨亮
Owner SHANGHAI NANRI INDAL
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