Measurement system for sea water temperature
A temperature measurement, seawater technology, applied in the field of marine engineering, can solve the problems of low precision, lack of stability, small resistance, etc., and achieve the effect of overcoming time-varying errors, long service life and high sensitivity
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[0021] Such as figure 1 , 2 , 3, 4, and 5, a seawater temperature measurement system includes an unbalanced bridge circuit unit 1, a constant current source generating circuit unit 2, a voltage follower circuit unit 3 and a filter amplifier circuit unit 4; the unbalanced The input terminal of the bridge circuit unit 1 is connected to the positive pole of the DC voltage through the voltage dividing resistor R8; the output terminal of the unbalanced bridge circuit unit 1 is connected to the voltage follower circuit unit 3; the output terminal of the unbalanced bridge circuit unit 1 terminal is connected to the constant current source generating circuit unit 2; the voltage following circuit unit 3 is connected to the filter amplifier circuit unit 4 through resistors R9 and R10; one end of the constant current source generating circuit unit 2 is connected to a +5V power supply.
[0022] The unbalanced bridge circuit unit 1 is composed of the left bridge arm 1-1 of the unbalanced ...
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