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A high-speed tiny pulse signal acquisition circuit

A pulse signal, acquisition circuit technology, applied in electrical program control, program control in sequence/logic controllers, etc., can solve problems such as high power consumption, difficulty in implementation, and inconvenience in mass use.

Active Publication Date: 2016-07-06
NO 513 INST THE FIFTH INST OF CHINA AEROSPACE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Taking the 2ns signal as an example, in order to sample accurately, the AD sampling rate must be greater than 1GHz. This type of AD circuit design is complex and consumes a lot of power, and only a few companies in the United States can produce AD ​​devices of this rate in the world. , this type of device is strictly controlled for export to China, and it is basically impossible to purchase such devices in China. Therefore, it is difficult to implement high-speed AD acquisition, and the cost is extremely high, which is not convenient for mass use.

Method used

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  • A high-speed tiny pulse signal acquisition circuit
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  • A high-speed tiny pulse signal acquisition circuit

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Embodiment Construction

[0016] In order to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] The invention proposes a high-speed tiny pulse signal acquisition circuit composed of simple components such as a high-speed operational amplifier, a comparator and a D flip-flop. The circuit design is simple, the sampling sensitivity is high, and the circuit area is very small (10cm 2 ), can be integrated in large quantities to realize simultaneous sampling of multiple signals. The following specifically discusses:

[0018] The circuit includes a clamping amplifier module, a threshold comparison module, a shaping trigger module and an FPGA control module; the connection relationship of each module is as follows: figure 1 shown.

[0019] The clamping amplifier module receives the pulse signal A, clamps and amplifies the pulse signal A to generate ...

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Abstract

The invention discloses a high-speed miniature pulse signal collecting circuit which comprises a clamping amplification module, a threshold value comparing module, a shaping trigger module and an FPGA control module. The circuit is simple in design, high in sampling flexibility and small in area (10cm<2>), mass integration can be achieved, and synchronous sampling of multi-channel signals is achieved.

Description

technical field [0001] The invention relates to a high-speed tiny pulse signal acquisition circuit, which belongs to the technical field of signal detection. Background technique [0002] In recent years, the detection of photonic electronic signals, nuclear test detection and other technical fields have developed rapidly. The electrical signals generated by the detectors of such events generally have the common characteristics of weak amplitude and high frequency. Taking a ray detector as an example, the output signal of the ray detector probe is a negative pulse signal of 20-50mV, the width of the signal is less than 2ns, the falling edge of the signal is less than 1ns, and the rising edge is less than 2ns. To complete the identification of photon time, the falling edge of the negative pulse output by each photon event probe must be strictly recorded. [0003] Currently, the most commonly used methods for detecting such signals are: photoelectric detection based on hybrid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/04
Inventor 康旭辉纪春恒孙书坤申景诗胡慧君
Owner NO 513 INST THE FIFTH INST OF CHINA AEROSPACE SCI & TECH
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