Methods, Devices And Systems Which Determine A Parameter Value Of An Object Or An Environment From A Voltage Reading Associated With A Common Mode Signal Of A Balanced Circuit

A system, comprising:

• a device having a balanced circuit;
• an electronic signal monitoring unit configured for electrical communication with the device to measure electrical parameters of the balanced circuit;
• circuitry for coupling to the balanced circuit, wherein the circuitry, when coupled to the balanced circuit, is configured to:
• generate a common mode voltage which correlates to a common mode signal of the balanced circuit;
• and
• generate a differential voltage of the balanced circuit, wherein the electronic signal monitoring unit comprises means for measuring the differential voltage and the common mode voltage;
• and
• a storage medium comprising program instructions which are executable by a processor for respectively determining, from the common mode voltage and the differential voltage, different parameters of an environment in which the device is arranged.

A device, comprising:

• a Wheatstone bridge circuit having two fixed resistors and two variable resistors;
• compensation circuitry coupled to the Wheatstone bridge circuit which is configured to compensate for variations of a resistive coefficient of a conductive material comprising the Wheatstone bridge circuit due to ambient temperature changes of the conductive material;
• and
• common mode signal circuitry coupled to the Wheatstone bridge circuit which generates a voltage correlating to a common mode signal of the Wheatstone bridge circuit.