Self electricity generation wireless pulling force sensor

Abstract

The invention relates to a self electricity generation wireless pulling force sensor. The self electricity generation wireless pulling force sensor comprises a force measuring circuit, a single chip processing circuit and a wireless communication circuit which are connected in series. The self electricity generation wireless pulling force sensor also comprises a pipe tube, magnetic steel and a resonance spring are arranged inside the pipe body, the resonance spring is connected at the bottom of the pipe body, the magnetic steel is arranged on the resonance spring, a coil is wound outside the pipe body, a rectifying circuit is connected with the coil and is connected with a capacitor energy storage voltage stabilizing circuit, and the capacitor energy storage voltage stabilizing circuit is respectively connected with the force measuring circuit, the single chip processing circuit and the wireless communication circuit for supplying the electricity. The invention uses the characteristic that the pulling force sensor moves up and down along a steel rope, the magnetic steel in the pipe body vibrates under the effect of the resonance spring, the coil cuts magnetic induction lines to generate electrodynamic potential, the work voltage is obtained after processing, and the self electricity generation is realized. At the same time, pulling force data is transmitted to a data receiving device nearby in a wireless transmission mode. The invention effectively solves the problem of easy abrasion of connecting wires of the existing pulling force sensor and the power supply problem of a wireless data transmission circuit.

Description

technical field [0001] The invention relates to a tension sensor, in particular to a tension sensor used for oil pumping units of petroleum mechanical equipment. Background technique [0002] Pumping unit is a traditional oil pumping equipment widely used in oil fields, commonly known as "kowtow machine". figure 1 is a schematic diagram of the pumping unit system. Such as figure 1 As shown, the pumping unit 101 is an eccentric link mechanism, which is usually directly driven by an ordinary asynchronous AC motor. The pumping unit 101 converts the rotational motion of the motor into the up and down movement of the head of the pumping unit 101, and pulls the sucker rod through the wire rope 102. 103. The sucker rod 103 drives the oil well pump 104 to perform vertical reciprocating motion with a fixed period. When going down, the oil pipe 105 elastically stretches and moves downward, relying on the pressure of the oil reservoir to seep oil into the oil well pump 104. When goin...

AI Technical Summary

Problems solved by technology

[0005] In view of the wear and tear of the connecting wire of the existing tension sensor, and the shortcomings of the wireless data transmission method that cannot solve the power supply problem well, the applicant has carried out improved research and provided a self-generating wireless tension sensor that can generate electricity by itself using the characteristics of motion , and transmit tension data wirelessly

Images