Bioelectrical impedance tomography system based on frequency division multiplexing data compression technology
A technology of bioelectrical impedance and electrical impedance tomography, which is applied in the fields of biomedical imaging and electronic technology, can solve problems such as cost increase, power consumption loss, and increased system area consumption, so as to reduce power consumption, low power consumption, and realize on-chip data The effect of compression
Active Publication Date: 2020-05-12
SHANGHAI JIAOTONG UNIV +1
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Problems solved by technology
The circuit structure based on time-division multiplexing reduces the area, but is limited by the switching stabilization time between channels, and when the number of inputs of the time-division multiplexer (Multiplexer, MUX) is increased, additional power consumption will be lost
The active electrode system eliminates cable transmission distortion, but its redundant design will increase the area consumption of the system and increase the cost
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[0039] In order to make the object, advantage, technical solution and implementation of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples and accompanying drawings. The exemplary embodiments and descriptions of the present invention are only used to explain the present invention, and are not intended to limit the present invention. Based on the embodiments of the present invention, other embodiments obtained by persons of ordinary skill in the art without creative efforts all fall within the protection scope of the present invention.
[0040] see first figure 1 , figure 1 It is a schematic diagram of the hardware connection mode of the lung monitoring electrical impedance tomography system based on the frequency division multiplexing technology of the present invention, figure 2 It is a schematic circuit structure diagram of an embodiment of the electrical impedance tomography chip (4) of the pres...
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The invention discloses a bioelectrical impedance tomography system based on a frequency division multiplexing data compression technology. The system comprises an electrode, a connecting wire, an electrical impedance tomography chip, a universal serial bus and a computer. The electrical impedance tomography system is realized through the ingenious application of the frequency division multiplexing technology, and has the advantages of low power consumption, low hardware overhead and the like. According to the 13-channel electrical impedance tomography chip architecture based on the frequencydivision multiplexing technology, the tape-out verification of the CMOS 0.13 micron process is achieved, the power consumption of each channel of a chip is 118 microwatts, and the area of each channelis 0.87 square millimeters. The bioelectrical impedance tomography system can be migrated to other applications of the electrical impedance tomography.
Description
technical field [0001] The invention belongs to the fields of electronic technology, biomedical imaging and the like, in particular to a bioelectrical impedance tomography system based on Frequency Division Multiplexing technology. Background technique [0002] Traditional medical imaging technologies include computerized tomography (CT), ultrasound, and nuclear magnetic resonance, which generally have problems such as large equipment, high cost of use, and long-term use are harmful to the human body. [0003] Bioelectrical impedance tomography (Electrical Impedance Tomography, EIT) is a new type of medical functional imaging technology. Its principle is to apply a safe small current on the surface electrodes of the human body and measure the voltage values on other electrodes. According to the voltage and The relationship between the currents reconstructs the electrical impedance value or the change value of the electrical impedance inside the human body. Compared with t...
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IPC IPC(8): A61B5/053A61B5/085H04N19/42
CPCA61B5/0536A61B5/085H04N19/42A61B5/7225
Inventor 连勇刘博晓王骏发曾磊
Owner SHANGHAI JIAOTONG UNIV