Novel side acceleration perturbation motion resistant resonant vibration barrel pressure sensor
A technology of lateral acceleration and pressure sensors, which is applied in fluid pressure measurement using piezoelectric devices, measuring fluid pressure, instruments, etc., can solve problems such as reducing the measurement accuracy of resonant cylinder pressure sensors, and achieve improved anti-interference ability, measurement Effect of Accuracy Improvement
Inactive Publication Date: 2010-06-02
BEIHANG UNIV
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Problems solved by technology
Reduced measurement accuracy of resonant barrel pressure sensors
Method used
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[0016] Such as figure 1 , 2 As shown, the present invention includes a thin-walled cylinder 1 of an elastic resonance sensitive element, an upper end cover 4 of the thin-walled cylinder, a base 3, three vertical support arms 6, an inner clamp 7, an upper end cover 8 of a support member, a protective shell 2, and an upper end cover of the protective shell is fixed Groove 5, the thin-walled cylinder 1 and the protective shell 2 are fixedly connected on the base 3, the busbars are parallel to each other and perpendicular to the base 3; the inner clamp 7 is connected with the upper end cover 4 of the thin-walled cylinder by interference fit; the upper end cover 8 of the support member is connected to the The fixing groove 5 of the upper end cover of the protective shell on the inner side of the upper cover of the protective shell 2 is fixedly connected by interference fit, so that the entire support is firmly connected with the protective shell; the inner clamp 7 and the upper end...
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A kind of new harmonic tin pressure sensor of anti side direction acceleration turbulence which includes the elastic harmonic sensing unit thin cylinder, the upper end cover of thin cylinder, the base, three horizon supporting arms, inner card kiln, outer card kiln, elastic opening of outer card kiln, and protection shell. The thin cylinder connects with the protection shell fixed on the base andthe bus bars parallel interact and normal with the base; the inner card kiln matches and connects with the upper end cover of thin cylinder; the upper end cover of supporting arm and the upper end cover of protection shell fixed slot of inside of the upper end cover of the protection shell firm joint adopting the interference conjunction and make the whole supporting component connected with the protection shell firmly; between the inner card kiln and the upper end cover of the supporting component is 120degree periodic symmetry with connecting three vertical supporting arms and the three vertical supporting arms layouts in the vertical direction and the separation angle is 120degree and the width is tangency with the inner card kiln and it is greater than the thickness of the three vertical supporting arms. The invention cancels out the tin cap oscillating phenomenon creating by the side direction acceleration turbulence so it enhances the anti-interference ability of the harmonic tinpressure sensor for the side direction acceleration turbulence.
Description
technical field [0001] The invention relates to a resonant cylinder pressure sensor, in particular to a novel resonant cylinder pressure sensor resistant to lateral acceleration disturbance, which belongs to the field of resonant body structure design. Background technique [0002] The resonant cylinder pressure sensor loads the measured fluid pressure onto the inner wall of the thin-walled cylinder to change the resonance equivalent stiffness of the resonant cylinder, thereby changing the resonant frequency of the thin-walled cylinder. By detecting the resonant frequency of the thin-walled cylinder, it can indirectly detect the load on the inner wall of the thin-walled cylinder. fluid pressure. [0003] However, due to the special structure of the thin-walled cylinder, its top end cover must have a certain thickness in order to ensure the condition of the top of the cylinder wall. Therefore, the inertial force of the top end cover cannot be ignored when bearing the lateral...
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IPC IPC(8): G01L19/02G01L9/08H03H9/02
Inventor 樊尚春庄海涵赵勇刘广玉
Owner BEIHANG UNIV