High-accuracy smart dual-core well depth measuring device

Abstract

The invention provides a high-accuracy smart dual-core well depth measuring device, comprising a steel wire rope, a pulley, a support, an incremental photoelectric rotary encoder, an electric steel wire rope winch and a depth measurement control center, wherein one end of the steel wire rope is connected to a well measuring probe, while the other end thereof is connected with the electric steel wire rope winch after bypassing partial wheel surface of the pulley from above; the pulley is arranged on the support through a sliding bearing; the incremental photoelectric rotary encoder is in transmission connection with the pulley; at every circle the pulley rotates, the bearing of the incremental photoelectric rotary encoder rotates to output a phase-A pulse signal and a phase-B pulse signal having a phase difference of 90 degrees; and the depth measurement control center comprises a real-time quick measurement processing core for receiving the two pulse signals in real time and performing related processing thereon, a multi-thread processing core and a peripheral input / output and drive unit. The high-accuracy smart dual-core well depth measuring device is used for measuring well depth, hole depth and the like, and is good in instantaneity, high in accuracy, high in efficiency, smart and the like.

Description

Technical field [0001] The invention relates to the technical field of exploration and logging, in particular to a high-precision intelligent dual-core well depth measuring device, which is used for measuring downhole probe depth and measuring depth or length and distance in other places. Background technique [0002] At present, when measuring the depth of downhole probes etc. in the process of exploration and logging, the following methods are used: [0003] 1. Use a measuring rope marked with a length mark to measure, manually record or visually measure the depth of the rope lowered, this method is inefficient, and the depth measurement error is large; [0004] 2. In another type, the wire rope passes through the pulley, and the sensing circuit constructed by the Hall sensor is used on the pulley. The output signal is counted by the C51 single-chip microcomputer. The C51 single-chip microcomputer also needs to communicate with the computer and drive the LED display. Because the s...

AI Technical Summary

Problems solved by technology

In practical applications, if the wire rope is retracted and retracted too fast, the depth measurement error will be larger than the first measurement method, and it is very difficult to control

[0005] Therefore, the existing well depth measurement schemes have problems such as low efficiency, large measurement errors, low measurement resolution, and inflexible use.

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