External disturbance compensation method of u-shaped pcb coil clamp head
A compensation method and technology for external interference, applied in measuring devices, instruments, measuring electrical variables, etc., can solve problems such as poor anti-interference ability and errors, and achieve the effect of measurement error compensation
Active Publication Date: 2015-09-09
UNI TREND TECH (CHINA) CO LTD
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Problems solved by technology
[0005] U-shaped PCB coil clamp head, because of its large opening, its anti-interference ability is poor, and there are often errors in the measurement process, so it is necessary to compensate for its induced voltage
Method used
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Embodiment
[0033] Example: see Figure 1 to Figure 4 , the external interference compensation method of the U-shaped PCB coil clamp head provided by the present embodiment, which includes the following steps:
[0034] (1) A U-shaped PCB coil clamp head 1 is set;
[0035](2) Two compensation coils 2 are provided, and the winding directions of the coils are the same;
[0036] (3) The compensating coil 2 described in step (2) is fixed on the two end faces of the U-shaped PCB coil pliers 1 described in step (1);
[0037] (4) When measuring the induced voltage, the closed-loop coil formed by the U-shaped PCB coil clamp head 1 is divided into two parts, the left and right coils, which are connected in series in the same winding direction, and the induced voltages generated are U 1 and U 2 , and the two compensation coils are coils connected in series, and the induced voltage generated is U 3 , then the measured voltage is U 1 , U 2 and U 3 Sum;
[0038] (5) When there is an external in...
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The invention discloses an external interference compensation method for a U-shaped printed circuit board (PCB) coil tong head. The external interference compensation method is characterized by comprising a first step of arranging the U-shaped PCB coil tong head; a second step of arranging two compensation coils, and enabling the coil winding directions of the two compensation coils to be identical; a third step of enabling the compensation coils in the second step to be fixed on two end faces of the U-shaped PCB coil tong head in the first step; a fourth step of when measuring induced voltage, enabling a closed-loop coil formed by the U-shaped PCB coil tong head to be divided into a left coil part and a right coil part to be in series connection in the same winding direction; and a fifth step of when an interference source exists externally, by adjusting the cross section area of the compensation coils or coil turns, enabling induced voltage U3' generated by the compensation coils and induced voltage U1' or U2' generated on a random side of the closed-loop coil formed by the U-shaped PCB coil tong head to be equal to induced voltage U2' or U1' on the other side, and achieving compensation.
Description
technical field [0001] The invention relates to the field of electromagnetic induction voltage measurement, in particular to an external disturbance compensation method for U-shaped PCB coil pliers used for measuring induced voltage. Background technique [0002] Traditional transformer coils are generally composed of enameled wires wound on rigid iron cores, non-magnetic skeletons or flexible hoses. In order to increase the mutual inductance coefficient and increase the induced voltage, generally when winding the coil, multiple layers of enameled wire are wound back and forth on the skeleton to increase the number of turns of the coil. Such an approach would cause the following problems: [0003] The cross-sectional area and wire length of each coil are not uniform. The innermost coil is wound directly on the bobbin, so the cross-sectional area of the innermost coil is the cross-sectional area of the bobbin. The outer coil is wound on the basis of the inner coil, so ...
Claims
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IPC IPC(8): G01R15/00
Inventor 赵辉罗友文侯孝刚
Owner UNI TREND TECH (CHINA) CO LTD