Sensing module and wearable device
A sensing module includes a first coil, a control component coupled to the first coil, and a shielding component positioned at least on a first side of the first coil. The control component is configured to drive the first coil to transmit a first emitting electromagnetic signal, and to receive an induction signal generated from the first coil induced due to a first feedback electromagnetic signal. The shielding component shields at least a portion of the first emitting electromagnetic signal transmitting toward a first direction.
1 . A sensing module for a wearable device, including:
a first coil having a first side toward to the wearable device, and a second side opposite to the first side;
a control circuitry coupled to the first coil, wherein the control circuitry is configured to drive the first coil to transmit a first emitting electromagnetic signal to a wearing portion of the wearable device, and to receive a first induction signal generated from the first coil in response to a first feedback electromagnetic signal; and
a shielding component forming an accommodating space for the first coil, the shielding component including:
a shielding surface positioned at the first side,
a shielding wall surrounding the first coil, and
a contraction structure extending from the shielding wall toward an axis of the first coil to define a restricted opening at the second side of the first coil.
2 . The sensing module of claim 1 , wherein the contraction structure at least partially overlaps the second side of the first coil to concentrate the first emitting electromagnetic signal through the restricted opening.
3 . The sensing module of claim 1 , further including a second coil disposed adjacent to the first coil.
4 . The sensing module of claim 3 , wherein the shielding component includes an isolation wall positioned between the first coil and the second coil.
5 . The sensing module of claim 1 , further including a matching component positioned at a second side of the first coil.
6 . The sensing module of claim 1 , wherein the control circuit includes an emitting unit and a receiving unit, wherein the emitting unit is configured to drive the first coil to transmit the first emitting electromagnetic signal, and the receiving unit is configured to receive the first induction signal generated from the first coil due to the first feedback electromagnetic signal.
7 . The sensing module of claim 6 , wherein the control circuit further includes a frequency adjustment unit coupled between the first coil and the emitting unit, wherein the frequency adjustment unit is configured to adjust a frequency of the first emitting electromagnetic signal.
8 . The sensing module of claim 7 , wherein the frequency adjustment unit includes at least a capacitor array configured to adjust an impedance value of the first coil.
9 . The sensing module of claim 6 , wherein the control circuit further includes a computing unit connected at least to the receiving unit, wherein the computing unit is configured to calculate physiological information based on the first induction signal.
10 . A wearable device, including:
a wearing structure;
a body combined with the wearable structure; and
a sensing module, including:
a first coil having a first side toward to the wearable device, and a second side opposite to the first side;
a control circuitry coupled to the first coil, wherein the control circuitry is configured to drive the first coil to transmit a first emitting electromagnetic signal to a wearing portion of the wearable device, and to receive a first induction signal generated from the first coil in response to a first feedback electromagnetic signal; and
a shielding component forming an accommodating space for the first coil, the shielding component including:
a shielding surface positioned at the first side,
a shielding wall surrounding the first coil, and
a contraction structure extending from the shielding wall toward an axis of the first coil to define a restricted opening at the second side of the first coil;
wherein the body is positioned on the first side of the sensing module, and the shielding component of the sensing module is positioned at least between the body and the first coil of the sensing module.
11 . The wearable device of claim 10 , wherein the contraction structure at least partially overlaps the second side of the first coil to concentrate the first emitting electromagnetic signal through the restricted opening.
12 . The wearable device of claim 10 , wherein the sensing module further includes a second coil disposed adjacent to the first coil.
13 . The wearable device of claim 12 , wherein the shielding component includes an isolation wall positioned between the first coil and the second coil.
14 . The wearable device of claim 10 , wherein the sensing module further includes a matching component positioned at a second side of the first coil.
15 . The wearable device of claim 10 , wherein the control circuit includes an emitting unit and a receiving unit, wherein the emitting unit is configured to drive the first coil to transmit the first emitting electromagnetic signal, and the receiving unit is configured to receive the first induction signal generated from the first coil due to the first feedback electromagnetic signal.
16 . The wearable device of claim 15 , wherein the control circuit further includes a frequency adjustment unit coupled between the first coil and the emitting unit, wherein the frequency adjustment unit is configured to adjust a frequency of the first emitting electromagnetic signal.
17 . The wearable device of claim 16 , wherein the frequency adjustment unit includes at least a capacitor array configured to adjust an impedance value of the first coil.
18 . The wearable device of claim 15 , wherein the control circuit further includes a computing unit connected at least to the receiving unit, wherein the computing unit is configured to calculate physiological information based on the first induction signal.