Interlayer electric resistance measuring system and interlayer resistance measuring instrument used thereof
A technology of interlayer resistance and measuring instrument, applied in the direction of measuring electrical variables, measuring resistance/reactance/impedance, measuring devices, etc., can solve the problems of easily damaged coatings, data usage restrictions, manual copying of measurement results, etc., and achieve printing format Flexible, easy to reuse, and improve the effect of accuracy
Inactive Publication Date: 2007-03-21
北京赛迪机电新技术开发公司 +1
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Problems solved by technology
[0003] The electrode head in the interlayer resistance measuring instrument is an important part of this type of measuring instrument. It is not only the implementing mechanism of the pressure, but also a part of the current loop, which is equivalent to the role of the current sensor, because the coating of the electrical steel sheet is very thin, The electrode tip in the prior art is easy to damage the coating when pressure is applied to it, so it cannot fully and correctly reflect the insulation of the coating, and the motor in the prior art cannot timely control the movement speed of the electrode tip during measurement
Due to the above defects, the repeatability of the interlayer resistance measurement of the electrical steel sheet is poor, and it cannot provide accurate data for the insulation of the electrical steel sheet coating
In addition, the existing technology is manual operation, and the measurement results are manually copied, which limits the use of data
Method used
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[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0022] As shown in Figure 2, the electrode at one end of the present invention and the electrode fixing device include a fixed frame 5, and a motor 6 is fixed on the top surface of the fixed frame 5. The motor 6 is a programmable motor, and a motor shaft 7 and a motor rotor 25 are used Threaded connection, the lower end of the motor shaft 7 is connected to the sensor 8, the lower end of the sensor 8 is connected to the force plate 9, and 10 electrodes 10 are fixed on the force plate 9, and the two ends of the force plate are connected to the guide plate 12 and the electrodes 10 by bolts. Through the guide hole on the guide plate 12 contacting the coating 3 on the steel plate substrate 2, the steel plate to be tested with the coating on the surface is placed on the bottom plate 11 on the lower end surface of the fixing frame 5.
[0023...
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The invention discloses an interface resistance measuring apparatus which includes the power supply, the aiguille connected to one end of the power supply and the electrode connected with the other end of the power supply. The electrode is connected with the steel board of the interface resistance which includes the electrode head which contacts the coating layer of the steel board base to detect the resistance of the surface coating. The electrode is fixed by the fixing device. Because the electrode head can be adjusted around the center automatically and the electric machine can control the move of the electrode head according to the predefined procedure, so it can give the force on the coating layer quickly to detect the resistance accurately. The invention also discloses an interface resistance measuring system including the computer, the A / D or D / A transition card, the serial communication interface, the direct current regulated power supply and the above interface resistance device. The process can be controlled automatically and the result can be stored in the databank and outputted to use secondly.
Description
technical field [0001] The invention relates to a resistance measuring instrument, in particular to a measuring instrument for measuring the coating resistance of a metal surface, and also relates to an interlayer resistance measuring system comprising the above-mentioned interlayer resistance measuring instrument. Background technique [0002] The method of measuring interlayer resistance of electrical steel generally adopts the schematic diagram shown in Figure 1. The measuring device consists of a power supply, electrodes at both ends and measuring instruments. One end of the power supply is connected to the drill bit 1, and the drill bit 1 is connected to the steel plate substrate 2. The steel plate The upper and lower surfaces of the substrate 2 are respectively coated with a coating 3, and the other end of the power supply is connected to an electrode, and the electrode includes an electrode tip 4, and the electrode can be in contact with the coating to measure the resi...
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IPC IPC(8): G01R27/02G01R27/04G01R27/08G01R27/14
Inventor 方岱宁饶国光
Owner 北京赛迪机电新技术开发公司