CN108445045A - A kind of deflation formula folding electrode frame for electricity tomography - Google Patents

Abstract

A compact folding electrode frame for electrical tomography of the present invention includes a protective belt, a telescopic frame and a plurality of electrode sheet parts, wherein the protective tape has elasticity and covers the outer periphery of the telescopic frame; the telescopic frame includes a plurality of Elastic support rods bent into arcs, the ends of adjacent elastic support rods are fixed on the back of the same electrode sheet, and the largest curved part of the elastic support rods is supported on the inner wall of the protective belt.

Description

A compact folding electrode holder for electrical tomography

technical field

The invention belongs to the field of electrical tomography data acquisition and measurement and the field of structure.

Background technique

In recent years, the method of electrical tomography has been applied in various aspects, but due to the unevenness of the surface of many measured objects, some electrode sheets cannot be completely contacted, and the mutual spacing of the distributed electrodes is also difficult to achieve. Therefore, the difference in each placement position will also lead to serious distortion of imaging. The placement of electrodes when measuring data is the key to tomography data acquisition technology.

Contents of the invention

The purpose of the present invention is to provide an electrode frame which can realize full contact between the electrode and the surface. The technical scheme is as follows:

A compact folding electrode frame for electrical tomography, including a protective belt, a telescopic frame and a plurality of electrode sheet parts, wherein the protective tape has elasticity and covers the outer periphery of the telescopic frame; the telescopic frame includes a plurality of bent For arc-shaped elastic support rods, the ends of adjacent elastic support rods are fixed on the back of the same electrode sheet, and the largest curved part of the elastic support rods is supported on the inner wall of the protective belt.

When measuring objects of various sizes, the telescopic frame can expand and contract to different degrees according to different sizes to adapt to the edges of various measured objects. Full contact with the surface is achieved, and the distance between each electrode sheet can be adjusted conveniently, thereby greatly reducing the acquisition error at the data source. The invention can adapt to various measurement environments, can improve the accuracy to the greatest extent on the hardware structure, and reduce the calibration complexity of the acquisition circuit and the program algorithm. If used as an electrode holder for a wearable measurement device, this design is small in size, light in weight and easy to wear compared to large wearable measurement devices and mechanical measurement devices.

Description of drawings

Fig. 1 is a schematic diagram of an electrode frame of an electrical tomography measurement system in an ideal state. In Figure 1:

1 protective belt; 2 telescopic frame; 3 electrode sheet; 4 edge of the object to be measured; 5 elastic support rod.

The internal measured object can be changed according to the actual measured object, and the elastic shrink frame 2 can adapt to various objects of different shapes.

Detailed ways

The present invention is based on an electrical tomography measurement system, uses a telescopic structure to evenly distribute the measuring electrodes and clings to the surface of the measured object, and the elastic structure can adjust the position of each electrode at will according to actual needs to meet the measurement needs. As shown in Figure 1, this design mainly includes three parts:

Protective belt 1: The protective belt has no structural function. Since the telescopic frame 2 is elastic, the external sharp part has a certain sharpness. The outer structure is wrapped with the elastic protective belt 1 to play a protective role.

Telescopic frame 2: The telescopic structure is the core of the design, and each electrode is fixed with two connected telescopic frames 2, which are made of specific elastic materials, which generate pressure on the electrodes 3 on both sides after each stretch.

Electrode sheet 3: The electrode is part of the data collected by the imaging system. The purpose of this design is to fix the electrode 3 on the bracket so that its position can be controlled and it is close to the edge 4 of the measured object.

Electrical tomography has a wide range of applications. It can not only image human organs such as the chest cavity, but also can be applied to devices such as pumping pipes. Therefore, there are different design schemes in different application environments. The details are as follows:

This structure has high requirements on the material, and the material must be elastic to meet the purpose of expansion and compression; and the corresponding shelf size should be determined according to the size range of the edge 4 of the measured object.

Since the tomography is applicable in various environments, this structure should also select suitable manufacturing materials and fixed structures according to different actual operating environments. If it is applied in a large-scale pipeline imaging system, a rigid material with high strength is required, and the interface between the electrode piece 3 and the telescopic frame 2 can be screwed or welded under the premise of good insulation. When imaging a large-diameter pipeline, the telescopic frame 2 can be made of a thinner steel plate, which can ensure the elasticity, structural stability and durability of the telescopic frame. An insulating spacer should be fixed between the electrode and the steel plate or an insulating layer should be coated on the back of the electrode. When imaging the human thorax, the elastic insulator material of the telescopic frame 2 can adopt lightweight materials such as ABS plastics, which can ensure the elasticity of the material, and its lighter weight is also conducive to operation. The connection between the electrode sheet 3 and the telescopic frame 2 Hot melt etc. can be used.

Because the outside of the structure is relatively sharp, in order to protect the operator and the tested personnel, a protective belt 1 is added to the outside of the structure. This protective belt also has elasticity, and soft materials such as elastic cloth belts can be used.

3D printing technology or casting technology can be used to build according to actual needs. The telescopic frame 2 can be fully expanded, and when in use, surrounds the object under test for a week and generates an inward pressing force. When measuring, put the whole set of device directly on the outside of the object to be measured. Since the telescopic frame 2 has elastic expansion and contraction properties, it can be tightly attached to the edge 4 of the object to be measured. Its elastic properties can also adjust the positions between the electrode sheets 3. It meets the position requirements for the electrode spacing during measurement.

Claims (1)

1. a kind of deflation formula folding electrode frame for electricity tomography, including protection band, expansion bracket and multiple electrodes piece portion Point, wherein protection band has elasticated, is covered in the periphery of expansion bracket；Expansion bracket includes the resilient support of multiple embowments Bar, the end of adjacent spring supporting rod are fixed on the back side of the same electrode slice, and the maximum deflection part support of elastic supporting bar exists On the inner wall of protection band.