Instrument and method for measuring static resistance and dynamic change resistance of material
A technology of static resistance and dynamic change, applied in the direction of measuring electrical variables, measuring resistance/reactance/impedance, instruments, etc., can solve problems such as trouble, measurement error, time delay, etc.
Inactive Publication Date: 2012-08-22
NINGBO UNIV
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Problems solved by technology
Static measurement can use two kinds of resistance measuring instruments, ordinary digital multimeter and megger. However, it is troublesome to switch between the two measuring instruments for measurement. Time delays lead to measurement errors
Method used
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Embodiment Construction
[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0035] An instrument for measuring the static resistance and dynamic resistance of materials, including a variable voltage source BT1 and a power supply voltage signal display circuit 2, the variable voltage source BT1 is connected to the power supply voltage signal display circuit 2, and it also includes a first standard resistance Device 3, adjustable resistor 4, second standard resistor 5, balanced bridge display circuit 6 and dynamic voltage display circuit 7, power supply voltage signal display circuit 2 is connected with the first standard resistor 3 and adjustable resistor 4 respectively , the first standard resistor 3 is connected to the adjustable resistor 4, the adjustable resistor 4 is connected to the second standard resistor 5, and the resistance RX to be measured is set between the first standard resistor 3 and the second standard...
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The invention discloses an instrument for measuring static resistance and dynamic change resistance of a material. In the instrument, a power supply voltage signal display circuit is connected with a first standard resistor and an adjustable resistor respectively; the first standard resistor is connected with the adjustable resistor; the adjustable resistor is connected with a second standard resistor; a resistor to be tested is arranged between the first standard resistor and the second standard resistor; a balanced bridge display circuit is arranged between a connecting point between the first standard resistor and the adjustable resistor and a connecting point between the resistor to be tested and the second standard resistor; and a dynamic voltage display circuit is arranged between aconnecting point between the first standard resistor and the adjustable resistor and a connecting point between the resistor to be tested and the second standard resistor. The instrument has the advantages that: when the external environment (such as load, temperature and the like) changes acutely, the dynamic change resistance of the material can be measured; and when the external environment (such as load, temperature and the like) changes acutely, the static resistance of the material can be measured.
Description
technical field [0001] The invention relates to an instrument for measuring material resistance, in particular to an instrument and a measuring method for measuring material static resistance and dynamic resistance. Background technique [0002] According to volume resistivity There are two different ways to measure resistance: one is when When using a general digital multimeter, you can use a general digital multimeter; the other is that with the rapid development of the aerospace industry, the research on new materials with lightweight materials and shielding functions continues to deepen. On polymers such as aniline, they are polymer materials. After adding conductive particles, their electrical properties are of great significance to the study of the inner mechanism of the electrical conductivity of the material under load. The volume resistivity of the above polymer materials , which requires a high resistance meter to test. [0003] In a short period of time, whe...
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IPC IPC(8): G01R27/02
Inventor 陈建康雷金涛张明华
Owner NINGBO UNIV