Self-adaptive magnetic suspension electronic balance and weighing method thereof
A technology of electronic balance and magnetic levitation float is applied in the direction of weighing equipment and measuring device using electromagnetic balance, which can solve the problems of wear and tear of the weighing device and affect the service life of the device, so as to avoid wear and tear, improve the service life, and eliminate nonlinearity. effect of influence
Pending Publication Date: 2022-03-18
JIANGSU UNIV
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On the other hand, due to the contact between the load-bearing mechanism and the force transmission system, the weighing device will be worn for a long time, which will affect the service life of the device
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[0026] The present invention will be further described below in conjunction with accompanying drawing.
[0027] refer to Figure 1-Figure 4 , an adaptive magnetic levitation electronic balance, comprising a permanent magnet ring 3, a circuit board 11 is pasted on the top of the permanent magnet ring 3, four electromagnetic coils 5 are installed on the top of the circuit board 11, and the four electromagnetic coils 5 are respectively placed on the permanent magnet The inner horizontal and vertical centers of the ring 3 are symmetrically positioned, one side of the electromagnetic coil 5 is equipped with an eddy current displacement sensor 4, and the structure of the circuit board 11 includes a drive circuit connected to the electromagnetic coil 5, which converts the input voltage of 12V into a single-chip microcomputer. The 5V voltage power supply voltage stabilization circuit, and the amplification circuit connected with the Hall sensor 6, the Hall sensor 6 is installed in the...
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The invention discloses a self-adaptive magnetic suspension electronic balance and a weighing method thereof, and belongs to the technical field of detection equipment manufacturing, the self-adaptive magnetic suspension electronic balance comprises a permanent magnet ring, a bottom plate is adhered below the permanent magnet ring, a circuit board is mounted above the permanent magnet ring, and four coils are fixed above the circuit board and at the central position of the permanent magnet ring. An eddy current sensor is arranged above the circuit board and close to the coils, a magnetic suspension floater is arranged in the center above the four coils, and a weighing plate is arranged above the floater. And the weighing disc is adhered to the floater. According to the invention, the floater can be balanced by using electromagnetic force provided by the four electromagnetic coils and the permanent magnet ring; the floater of the electronic balance structure is not contacted with the permanent magnet ring, so that the influence caused by friction force is eliminated; according to the electronic balance structure, the eddy current sensor is used for measuring distance, so that after a heavy object is added to the plate, the floater can still keep balance at the same position when the stress is changed, and the nonlinear influence on the floater caused by the change of the magnetic field of the permanent magnet ring is eliminated.
Description
technical field [0001] The invention belongs to the technical field of weighing equipment, and in particular relates to an adaptive magnetic levitation electronic balance and a weighing method thereof. Background technique [0002] The traditional electronic balance is mainly composed of four parts: pressure sensor, weighing system, signal processing circuit and power supply. The pressure sensor is a conversion element that converts weight into electricity. It mainly converts the weight of the measured object into a physical output that is convenient for measurement according to the corresponding functional relationship, usually voltage, current, etc. However, most of the corresponding functional relationships are difficult to guarantee a linear relationship, which affects the accuracy of weighing. [0003] The main body of electronic balance weighing is the load-bearing mechanism and force transmission system. The load-bearing mechanism is mainly used to place the measure...
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IPC IPC(8): G01G7/02
CPCG01G7/02
Inventor 鲍丙豪王徽
Owner JIANGSU UNIV