Switching board for bio-impedance measurement and electrode switching device

Abstract

The invention belongs to the field of bio-impedance measurement equipment, and particularly discloses a switching board for bio-impedance measurement and an electrode switching device. The switching board comprises a switching board body, a first switching bonding pad and an electric connector, wherein the first switching bonding pad is arranged on the switching board body, the switching board body comprises contact parts and a hollow notch, the contact parts are formed by outwards extending from the two sides of the bottom of the switching board body, the hollow notch is positioned between the contact parts, and the first switching bonding pad is electrically connected with the electric connector through a first microstrip line. The invention also discloses a switching device, which comprises the switching board and an electrode board, wherein the switching board and the electrode board are in hard connection. The measuring electrode consistency can be ensured, the uncertainty in each time of processing when soft connection is adopted in the prior art is avoided, the calibration parameter is universal, the single calibration in each time is not needed, the processing precision requirement of the used electrode board is also reduced, and the processing cost is also reduced.

Description

technical field [0001] The invention belongs to the field of biological impedance measurement equipment, and in particular relates to an adapter plate and an electrode adapter device for biological impedance measurement. Background technique [0002] In bio-impedance measurement, when conventional PCB board thickness is usually used, the distribution of measurement electrodes is limited to a "one"-shaped arrangement, that is, a straight line, to ensure the hard connection between the measurement electrodes on the probe and the front end of the excitation acquisition circuit; Sometimes, in order to realize the hard connection between the measurement electrodes and the front end of the excitation acquisition circuit in a rectangular arrangement or in other ways, the PCB board is generally thickened, but the size of the measurement electrode surface and the distance between the measurement electrodes are greatly limited. [0003] To avoid cross-contamination of test subjects, t...

AI Technical Summary

Problems solved by technology

Through actual application, it is found that the replaceable electrodes made by flexible wire connection have a large randomness in the coupling value between the lines each time they are made, and the stray capacitance value cannot be determined, which leads to the inconsistency of the calibration parameters, and it is difficult to ensure the consistency of the test results. Accuracy; and the hard crimping method is through the crimping between the measuring electrode and the front-end contact of the excitation acquisition circuit. This method has a good initial effect, but with the increase in the number of uses, the wear of the lock may cause the pressure of a certain electrode point. Inaccurate connections cause test errors, and the contact positioning of the measuring electrodes is required to be extremely accurate, otherwise it may not be able to be connected accurately due to positional deviations

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