Strain measuring system resisting strong electromagnetic interference
A strong electromagnetic interference and strain measurement technology, applied in the field of strain measurement systems, can solve problems such as damage to measurement equipment and strain measurement interference, and achieve the effects of ensuring equipment safety, reducing impact, and accurate and reliable strain measurement results.
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[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings:
[0020] See figure 1 , The strain measurement system for anti-strong electromagnetic interference of the present invention includes a front-end magnetic field compensation strain probe 1-1, a Wheatstone bridge box 1-3, and a strain signal conditioning circuit 1- which are sequentially connected through a double-layer double-core shielded cable 1-2. 4. A / D converter 1-5 and terminal recording equipment 1-6; the two cores of the double-layer double-core shielded cable 1-2 are connected to the two upper adjacent arms of the Wheatstone bridge box 1-3; The bridge box 1-3 is connected to a 5V DC power supply; the strain signal conditioning circuit 1-4 is composed of a fifth-order Butterworth filter amplifier and a voltage follower. The shell of Wheatstone bridge box 1-3 is a metal shell and is grounded. The terminal recording equipment is a computer or an oscilloscope...
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