A method for performing on-demand detection and lead-off device for carrying out a bioelectrical interaction with an individual

摘要

The apparatus for carrying out a bioelectrical interaction with an individual by the electrode 29,29a, the present invention relates to a device to be realized on demand for verification the integrity of the electrical contact of the electrode. The apparatus 20 includes a control unit 22 configured to determine the occurrence of a predetermined event with respect to the quality of the measurement signal. If the predetermined event is detected, the control unit 22 activates the test device 24. The test means is configured to generate I1, I2 test signal, so as to impart to the electrode via a coupling circuit 23,23a these signals. If the cumulative information is obtained about the integrity of contact is desired, it is sufficient to impart the test signals, one for each electrode. If it is determined which of the electrodes whether that lost its contact is required, the sequence of the test signal is generated by the sequencer 24b. Preferably, the response signals from the electrode 29,29a is transferred to the input filter 26 is also used for signal analysis of normal. Signal from the input filter 26 is directed to the input amplifier 28 via the input impedance 25,25a. Response signal, which is amplified, is transferred to the signal processing unit 30, comprises the signal processing means is to analyze the response signals. Preferably, the amplitude analysis is performed. The signal from the signal processing means 30, is provided an analog / digital converter (ADC) 32, then, digital processing of the response signal are performed by the processing unit 34 of the other. If the decision processing unit 34 of the other, the integrity of the contact is less than an acceptable level, lead off indicator 36 is activated.