METHOD FOR TRANSMITTING ANALOG SIGNALS THROUGH A CONTACT CONNECTOR AND A DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2021 - IPC G01V1/22 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measuring technology and can be used to transmit a measuring signal of a low-level seismic receiver to the input of a recording device through a detachable contact connector. To do this, the method uses summation of the transmitted signal of a low-level sensor with a high-level reference signal exceeding the maximum signal level of the sensor, followed by subtraction of the reference signal on the output side of the connector. For this purpose, the device contains a distributed seismic receiver (two-pole) on the transmitting side of the connector, each output of which is connected to the high-resistance input of each of the two repeaters, the output of which is loaded with a resistor, through the output resistor it is connected to the inverting input of each of the two operational amplifiers on the transmitting side covered by negative feedback, each output of which is connected through a contact connector and an input resistor on the receiving side to the inverting input of each of the two operational amplifiers covered by negative feedback, the outputs of which are connected to the differential input of the end user, the non-inverting input of which is connected through an additional output of the contact connector to the reference signal source on the transmitting side, the output of which is simultaneously connected to the non-inverting input of operational amplifiers on the transmitting side.

EFFECT: provision of undistorted transmission of analog signals of a low-level sensor through a contact connector.

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