Organism surface electrical signal detecting electrode array

Abstract

An organism surface electrical signal detecting electrode array comprises an electrode carrier of a flexible printed circuit board, wherein the electrode carrier adopts double-sided printed circuit wiring; electrode points in array arrangement are arranged on the electrode carrier; the electrode point array of the electrode carrier is averagely partitioned into two zones left and right, and the two zones use 2-3 mm printed circuit PCB wires as ground wires respectively to form full closure; miniature heating resistors are also arranged on the electrode points; each miniature heating resistor is provided with two pins; one pin is connected to a common interface end through PCB wiring on the side opposite to a welding pad; the other pin is connected to a 5V power supply through the PCB wiring on the side opposite to the welding pad; the miniature heating resistor is connected with the welding pad and welding tin in an insulated way; the miniature heating resistor body is embedded into the welding tin. The organism surface electrical signal detecting electrode array can keep the temperature of each electrode point controllable, so that the temperature error is reduced.

Description

technical field [0001] The invention relates to a design method of a detection electrode array suitable for weak electrical signals on the surface of a living body. Background technique [0002] The detection of electrical signals on the surface of living organisms has always been one of the difficult problems in the field of biomedicine. The detection of electrical signals on the surface of living organisms has the following problems: [0003] 1. The signal amplitude is very weak, such as nerve potential, electromyographic signal, etc., which cannot be directly obtained by conventional detection methods and equipment. If the amplifier is introduced, it will bring great interference and make the original signal characteristics be submerged by noise signals. [0004] 2. Most of the acquisition of existing bioelectrical signals uses microelectrodes, and in order to obtain weak signals such as neural electrical signals and biological trigger signals, in order to avoid noise, i...

AI Technical Summary

Problems solved by technology

[0003] 1. The signal amplitude is very weak, such as nerve potential, electromyographic signal, etc., which cannot be directly obtained by conventional detection methods and equipment. If an amplifier is introduced, it will bring great interference and make the original signal characteristics be submerged by noise signals

[0004] 2. Most of the acquisition of existing bioelectrical signals uses microelectrodes, and in order to obtain weak signals such as neural electrical signals and biological trigger signals, in order to avoid noise, invasive detection methods (such as needle electrodes, etc.) are used, not only for the measured Mobs deal extra damage and introduce new noise

[0005] 3. The biological signal is a non-stationary signal with strong randomness. According to different test conditions and requirements, the state of the electrode and the detection method need to be changed in time

[0006] 4. Due to the characteristics of organisms and biological signals, the existing detection electrodes cannot guarantee the consistency of test conditions

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