一种柔性基板SOT传感环结构

Abstract

本实用新型公开了一种柔性基板SOT传感环结构，包括柔性基板，所述柔性基板沿圆周方向弯折形成环形或弧形，且柔性基板上设置单层、双层或多层的布线结构；SOT传感单元阵列，包括若干SOT磁传感器并且SOT磁传感器沿所述柔性基板的周向间隔布置，布置方式为等角间隔布置或非等角优化布置；导电 / 信号传输线路以及信号引出部，所述导电 / 信号传输线路设置于所述柔性基板的布线结构并且用于连接各个SOT磁传感器至所述信号引出部。本实用新型公开的一种柔性基板SOT传感环结构，克服现有磁编码器技术中灵敏度不足、结构刚性导致贴合性差、阵列布置受限、体积较大及环境适应性差等缺陷。

Claims

1. A flexible substrate SOT sensor ring structure, characterized by, include: A flexible substrate, wherein the flexible substrate is bent in a circumferential direction to form a ring or arc, and a single-layer, double-layer or multi-layer wiring structure is provided on the flexible substrate. The SOT sensing unit array includes a plurality of SOT magnetic sensors and the SOT magnetic sensors are arranged at circumferential intervals along the flexible substrate, and the arrangement is either equiangular intervals or non-equiangular optimized arrangement. The conductive / signal transmission line is disposed in the wiring structure of the flexible substrate and is used to connect each SOT magnetic sensor to the signal output section; the signal output section is used to transmit signals to external circuits and includes a flexible ribbon cable interface, a pad array and a standard connector interface. A support and fixing structure is used to fix the flexible substrate in a preset position. The support and fixing structure includes an inner bonding structure, an outer bonding structure, and an embedded structure.

2. The flexible substrate SOT sensor ring structure of claim 1, wherein, For the inner bonding structure, the flexible substrate is fixed to the inner wall of the magnetic ring through the inner bonding structure, which is a pressure-sensitive adhesive or an annular groove.

3. The flexible substrate SOT sensor ring structure of claim 1, wherein, For the external bonding structure, the flexible substrate is fixed to the outer wall of the magnetic ring through the external bonding structure, which is a retaining ring or a support cover.

4. The flexible substrate SOT sensor ring structure of claim 1, wherein, The flexible substrate is fixed in a pre-reserved groove in the motor housing or shaft by an embedded structure.

5. The flexible substrate SOT sensor ring structure of claim 1, wherein, It also includes a compensation and calibration module, which is mounted on the flexible substrate. The compensation and calibration module includes a temperature sensor, a reference SOT unit, a differential bridge circuit, and a built-in magnetic bias calibration unit.

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