Two-core wire embedding structure for storage package of calibration parameters of vibrating wire sensors

Abstract

The invention provides a two-core wire embedding structure for a storage package of calibration parameters of vibrating wire sensors. The two-core wire embedding structure is formed by comprising a storage unit for storing vibrating wire sensor calibration parameters of a measuring port and a communication port, and the storage unit is formed by comprising a storage circuit, a power circuit and atwo-way switching circuit; the measuring port is an access port for being connected with the vibrating wire sensor and obtaining a frequency transmitting signal, and is jointly composed of the accessend and the common end; and the communication port is the port connecting the storage unit and an external measurement and control device, an external lead of the I / O end of the storage circuit is theexternal end of the communication port, and the communication port is jointly composed of the external end and the common end. According to the technical scheme, each vibration wire sensor is bound and associated with corresponding calibration characteristic parameters, the simplest two-core wiring structure is realized, and meanwhile, the original technical advantage of long-distance stable signal transmission of the sensors is maintained.

Description

technical field [0001] This patent application relates to the connection structure for obtaining the sensing and transmitting signals of sensors, in particular to the connection structure for obtaining the sensing and transmitting signals of vibrating wire sensors. Background technique [0002] The vibrating wire sensor has simple structure, quasi-digital output signal, strong anti-interference ability, little temperature influence, long service life, and especially has two-core stable long-distance signal transmission characteristics unmatched by other sensors. It is widely used in various civil engineering fields. Among them, construction and quality monitoring such as bridges, tunnels, dams, pile foundations, railways, etc. are widely used to obtain frequency signals, and then convert them into pressure (KN), stress (MPa), strain (με), displacement ( mm) and other physical quantities. Due to various reasons such as product types, structures, and manufacturing processes, ...

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Problems solved by technology

[0003] Although this technical desire is good and has become a consensus in the field, it is extremely difficult to implement this seemingly simple solution

The reasons are as follows: 1. The addition of the storage circuit leads to an increase in external leads. In addition to the original sensor signal lines, the added external lines include public ground wires, power lines, communication lines, and temperature measurement signal lines of the synchronous temperature measurement device. The increase in the number of wiring makes the wiring operation extremely cumbersome, and the reliability of the product will also be greatly reduced; 2. The communication distance is greatly shortened, which is difficult to compare with the original two-core signal cable structure of hundreds of meters or even kilometers, only a few meters, The longest is no more than twenty meters

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