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Analog-digital conversion method and device based on neuron working principle

A technology of analog-to-digital conversion and working principle, applied in the direction of analog-to-digital conversion, code conversion, electrical components, etc., can solve problems such as inability to describe information and slow conversion speed

Inactive Publication Date: 2013-01-02
SOUTHERN MEDICAL UNIVERSITY
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Problems solved by technology

This strategy of the existing analog / digital conversion technology is obviously not suitable for the biological nervous system, because the conversion speed of biological neurons to information is much slower than that of electronic components, and the number and interconnection of neurons in a short time Basically unchanged, that is to say, the nervous system cannot achieve a finer description of information by increasing the speed of information conversion and the number of conversion bits

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  • Analog-digital conversion method and device based on neuron working principle
  • Analog-digital conversion method and device based on neuron working principle
  • Analog-digital conversion method and device based on neuron working principle

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Embodiment Construction

[0029] The method of the present invention is mainly realized by two links of current-voltage conversion and encoding the converted voltage with a threshold value (or base value).

[0030] 1. Current-voltage conversion: It is mainly completed by the working mechanism equivalent to membrane capacitance. Changes in the membrane current lead to charging and discharging of the membrane capacitance, thereby changing the equivalent transmembrane voltage change, manifested as depolarization or hyperpolarization equivalent to the membrane potential. In this link, the input current (or the electrical change equivalent to the current) I(t) is converted into the voltage change at both ends of the capacitor through the integration circuit (or integration method) mainly based on the capacitor.

[0031] 2. The voltage converted by threshold-time conversion encoding: In neurons, when the membrane potential is depolarized to the threshold potential (UT), the neuron generates an action potenti...

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Abstract

The invention discloses an analog-digital (time-pulse signal) conversion method and a device based on the neuron working principle. The device comprises a signal input circuit, a membrane potential integrating circuit and an action potential generating circuit. The signal input circuit is used for simulating and generating nerve impulse of neurons, the membrane potential integrating circuit is used for carrying out integration on the input signals of the signal input circuit, and the action potential generating circuit is used for comparing the integration result of the membrane potential integrating circuit with a predetermined threshold value to generate an action potential. In the invention, the analog-digital conversion device based on the neuron working principle is designed by simulating the coding mechanism of biological neurons on input information, and the information processing mode is realized by using a circuit method.

Description

technical field [0001] The present invention relates to an analog-to-digital conversion device based on the working principle of central neurons. Specifically, the analog-to-digital conversion device converts an analog electrical signal that changes with time into an analog quantity that takes time as an analog quantity, and is equivalent to an action potential (single Phase or bi-phase) pulse is a multi-pulse sequence coded signal with time characteristics of digital quantity (no 0 or 1), and the coded signal is a modulus or time-pulse signal with both analog and digital quantities, which is different from a single The digital signal is also different from a single analog signal. Background technique [0002] Neurons are the basic structural and functional units of the central nervous system to perform complex information processing. The most basic characteristic of neurons is to accept input information, and then convert the input information into "all" or "none", relativ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M1/50H03K5/04
Inventor 肖中举梁妃学邓亲恺周凌宏郭劲松
Owner SOUTHERN MEDICAL UNIVERSITY
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