Soil resistivity field dynamic change test system based on circuit rotation switching mode
A dynamic change and test system technology, applied in the direction of measuring electrical variables, measuring resistance/reactance/impedance, measuring devices, etc., can solve problems such as cost increase, mechanical relay noise, waste of electric energy, etc., to achieve fast switching and overcome switching Insufficient rate, avoiding the effect of cross interference
Pending Publication Date: 2022-03-01
JIANGSU UNIV OF SCI & TECH
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
When the period of the property change of the measured object is less than 1 second, the electrode scanning only scans back and forth once, and the data obtained by the test cannot reflect the change of the property of the measured object
Therefore, when the nature of the measured object changes dynamically, the use of relay control circuits cannot meet the needs of the dynamic change test of the object.
[0004] In addition, because the switching action control of multiple sets of relays needs to arrange more control lines, it wastes electric energy and increases the cost, and the switching of mechanical relays has more noise, which affects the equipment quality of the system
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0025] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0026] like figure 1The shown soil resistivity field dynamic change test system based on the circuit rotation switching method includes: a rotation switching electrode scanning device and a data acquisition and instrument control part;
[0027] like figure 2 and 3 As shown, the rotary switching electrode scanning device includes: a servo motor 1, a rotating core 2, a reversing slip ring 3, one or more fixed electrode groups 4, a moving brush 5 corresponding to the fixed electrode groups, an auxiliary circuit and Power supply 15; the rotor of the rotating core 2 is fixedly connected with the servo motor 1, the stator end of the reversing slip ring 3 is fixed on the support, the rotor end is fixedly connected with the rotating core 2, and the fixed electrode group 4 is composed of multiple It is composed of fixed electrodes ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a soil resistivity field dynamic change test system based on a circuit rotation switching mode. The soil resistivity field dynamic change test system comprises a rotation switching type electrode scanning device and a data acquisition and instrument control part, the rotary switching type electrode scanning device comprises a servo motor, a rotary core, a reversing slip ring, a fixed electrode group, a movable electric brush corresponding to the fixed electrode group, an auxiliary circuit and a power supply; test electrodes are embedded at different heights of a tested object, a lead-out wire of the fixed electrode group is connected with the test electrodes in sequence, a lead-out wire of the moving brush is connected with a rotor end of the reversing slip ring and is led out from a stator end to be connected with an auxiliary circuit, and a contact of the moving brush and a contact of the fixed electrode group are contacted and separated in sequence along with rotation of the rotating core. A switching switch for closing and opening is formed; according to the invention, rapid one-by-one opening and closing switching between the test electrode and the signal test circuit can be realized, and the opening and closing switching speed and speed can be controlled through the rotating speed of the servo motor.
Description
technical field [0001] The invention relates to the testing field of electrical conductivity field or resistivity field in civil engineering and geotechnical engineering testing, in particular to a dynamic change testing system of soil resistivity field based on circuit rotation switching mode. Background technique [0002] Resistivity or conductivity is an important parameter to study the electrical properties of materials, and it is widely used in geotechnical engineering, especially in the study of special soils, such as expansive soils (Cui Kerui, Cha Fusheng, Liu Songyu, etc. Expansion based on resistivity method Quantitative study on the structure change of soil in the process of water absorption and swelling[J].Journal of Geotechnical Engineering.2008,30(12):1832-1839; Miao Linchang, Yan Mingliang, Cui Ying.Resistivity characteristic test research of remodeled expansive soil[J] .Journal of Geotechnical Engineering.2007,29(9):1413-1417.), polluted soil (Han Pengju, Don...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G01R1/04G01R27/02
CPCG01R1/04G01R27/02
Inventor 王炳辉王春成张雷王丽艳张琦李晓文
Owner JIANGSU UNIV OF SCI & TECH