Wearable device capable of correcting bio-information and bio-information measurement system

Abstract

The present invention discloses a wearable device capable of correcting biometric information, comprising: a substrate; a first motion sensing area comprising a first electrode located on the substrate; a second motion sensing area comprising a second electrode, wherein a shielding layer is provided on the second electrode and the second electrode is located between the shielding layer and the substrate, and when a user wears the wearable device, the user causes a greater capacitance change to the first electrode and a smaller capacitance change to the second electrode; a capacitance calculation circuit coupled to the first electrode for calculating the capacitance change generated by the first electrode or the second electrode; and an action judgment circuit for judging the action of the wearable device based on the capacitance change of the first electrode or the capacitance change of the second electrode. The present invention also provides a biometric information measurement system, which can more accurately measure biometric information and accurately judge movement through different motion sensing areas.

Description

Technical Field

[0001] The present invention relates to a wearable device and a bio-information measurement system, and more particularly to a wearable device and a bio-information measurement system capable of sensing motion or correcting bio-information in response to motion. Background Art

[0002] In recent years, smart wearable devices, such as smart watches and smart bracelets, have become increasingly popular. These devices often measure biometric information (e.g., blood pressure or heart rate). While wearing these devices, user movements, such as jogging or walking, can interfere with the biometric measurements. However, existing smart wearable devices lack appropriate biometric calibration methods.

[0003] Furthermore, existing smart wearable devices have difficulty in accurately judging the user's movements. Summary of the Invention

[0004] Therefore, an object of the present invention is to disclose a wearable device that can sense motion or correspond to motion to correct biometric information.

[0005] Another object of the present invention is to disclose a bio-information measurement system capable of sensing motion or corresponding to motion to calibrate bio-information.

[0006] One embodiment of the present invention discloses a wearable device, comprising: a substrate; a first motion sensing area, comprising a first electrode located on the substrate; a second motion sensing area, comprising a second electrode, wherein a shielding layer is provided on the second electrode and the second electrode is located between the shielding layer and the substrate. When a user wears the wearable device, the user causes a larger capacitance change to the first electrode and a smaller capacitance change to the second electrode; a capacitance calculation circuit, coupled to the first electrode, for calculating the capacitance change generated by the first electrode or the second electrode; and an action determination circuit, for determining an action of the wearable device based on the capacitance change of the first electrode or the capacitance change of the second electrode.

[0007] Another embodiment of the present invention discloses a bio-information measurement system, comprising: a bio-information measurement device for measuring bio-information; a substrate; a first motion sensing area comprising a first electrode located on the substrate; a second motion sensing area comprising a second electrode, wherein a shielding layer is provided on the second electrode and the second electrode is located between the shielding layer and the substrate, and when a user wears the bio-information measurement system, the user causes a greater capacitance change to the first electrode and a smaller capacitance change to the second electrode; a capacitance calculation circuit coupled to the first electrode and the second electrode for calculating the capacitance change generated by the first electrode or the second electrode; and an action determination circuit for determining an action of the bio-information measurement system based on the capacitance change of the first electrode or the capacitance change of the second electrode; wherein the bio-information measurement system corrects the bio-information in response to the action.

[0008] According to the aforementioned embodiment, biometric information can be corrected according to motion, thereby enabling more accurate measurement of biometric information. In addition, motion can be accurately determined using different motion sensing areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 as well as Figure 2 FIG. 4 is a schematic diagram of a smart watch according to an embodiment of the present invention.

[0010] Figure 3 for Figure 2 A cross-sectional view of the smartwatch shown in .

[0011] Figure 4 FIG. 4 shows a block diagram of a smart watch according to an embodiment of the present invention.

[0012] Figure 5 FIG. 4 is a schematic diagram of a smart watch according to another embodiment of the present invention.

[0013] Figure 6 as well as Figure 7 FIG. 4 is a schematic diagram of a biological information measurement system according to an embodiment of the present invention.

[0014] The description of the accompanying drawings is as follows:

[0015] 100, 600 smart watches

[0016] 101 front surface

[0017] 103 Sensing Surface

[0018] 300 matrix

[0019] 401_a, 401_b electrodes

[0020] 403 Capacitance Calculation Circuit

[0021] 405 action judgment circuit

[0022] 407 Processor

[0023] 409 Bio-information Measurement Device

[0024] 601 Optical Sensor

[0025] L1, L2 light sources

[0026] MR_1 First motion sensing area

[0027] MR_2 Second motion sensing area

[0028] EL_11, EL_12, EL_13 first electrodes

[0029] EL_21, EL_22, EL_23 Second electrodes

[0030] Sh_1 First shielding layer

[0031] Sh_2 Second shielding layer DETAILED DESCRIPTION

[0032] The present invention will be described below using multiple embodiments. It should be noted that the components in each embodiment may be implemented via hardware (e.g., a device or circuit) or firmware (e.g., at least one program written into a microprocessor). Furthermore, the components in each embodiment may be integrated into fewer components or divided into more components.

[0033] In addition, in the following embodiments, a smart watch is used as an example to illustrate the concept of the present invention. However, the wearable device that can be applied to the content of the present invention is not limited to a smart watch, and can be other types of wearable devices, such as a smart bracelet.

[0034] Figure 1 as well as Figure 2 FIG. 1 is a schematic diagram of a smart watch according to an embodiment of the present invention. Figure 1 As shown, the smart watch 100 includes a front surface 101, which can display required information, such as time, messages or images, such as a display. Figure 2 In the embodiment, the smart watch 100 includes a sensing surface 103. In this embodiment, the sensing surface 103 is the back of the smart watch 100. When the user wears the sensing surface 103, the sensing surface 103 can cause the electrodes included in the smart watch 100 to generate a capacitance change. However, if the concepts of the present invention are applied to another type of electronic device, the sensing surface 103 can be any other surface of the electronic device.

[0035] like Figure 2As shown, the smartwatch 100 includes a first motion sensing area MR_1 and a second motion sensing area MR_2. The first motion sensing area MR_1 includes at least one first electrode (only two first electrodes EL_11 and EL_12 are shown). Furthermore, the second motion sensing area MR_2 includes at least one second electrode (only two second electrodes EL_21 and EL_22 are shown). When a user wears the smartwatch 100, the user causes a larger capacitance change on the first electrodes EL_11 and EL_12 and a smaller capacitance change on the second electrodes EL_21 and EL_22. In other words, the capacitance change caused by the user wearing the smartwatch 100 on the second electrodes EL_21 and EL_22 is smaller than the capacitance change caused by the user wearing the smartwatch 100 on the first electrodes EL_11 and EL_12. In one embodiment, a shielding layer is provided on the second electrodes EL_21 and EL_22, so that the capacitance change caused by the user wearing the smartwatch 100 is smaller. In one embodiment, the shielding layer can completely isolate the second electrodes EL_21 and EL_22 from the user's skin, so that when the user wears the smart watch 100, no capacitance change is caused to the second electrodes EL_21 and EL_22.

[0036] Figure 3 for Figure 2 Specifically, Figure 3 yes Figure 2 The cross-sectional view of the smart watch 100 is shown along the dotted line X. Figure 3 As shown, the smartwatch 100 includes a substrate 300. The substrate 300 may be a housing that includes the circuitry of the smartwatch 100. Alternatively, the substrate 300 may be a substrate provided additionally to the housing that includes the circuitry of the smartwatch 100. First electrodes EL_11 and EL_12 are disposed within the substrate 300, with portions of the first electrodes EL_11 and EL_12 exposed to the exterior of the substrate 300. Furthermore, a first shielding layer Sh_1 is disposed between the substrate 300 and the first electrodes EL_11 and EL_12.

[0037] Furthermore, second electrodes EL_21 and EL_22 are also disposed within substrate 300, with portions of second electrodes EL_21 and EL_22 exposed outside substrate 300. However, unlike first electrodes EL_11 and EL_12, second electrodes EL_21 and EL_22 are located between second shielding layer Sh_2 and substrate 300. In one embodiment, both first shielding layer Sh_1 and second shielding layer Sh_2 are coupled to a ground voltage within smartwatch 100. In another embodiment, first shielding layer Sh_1 and second shielding layer Sh_2 are metal layers.

[0038] The first electrodes EL_11, EL_12, and the second electrodes EL_21, EL_22 can be mutual capacitance electrodes or self capacitance electrodes. If an electrode is a mutual capacitance electrode, it can function only as a transmitter (TX) or a receiver (RX). If an electrode is a self capacitance electrode, it can function as both a transmitter (TX) and a receiver (RX). In one embodiment, the first electrode EL_11 and the second electrode EL_21 are mutual capacitance electrodes that function as transmitters, and the first electrode EL_12 and the second electrode EL_22 are mutual capacitance electrodes that function as receivers. In this case, the first electrode EL_11 and the second electrode EL_21 can be coupled to the same signal source that generates a signal for detecting touch, but this is not limited to this.

[0039] Figure 4 A block diagram of a smartwatch 100 according to an embodiment of the present invention is shown. Specifically, Figure 4 It illustrates how to calculate the capacitance changes of the first electrodes EL_11 and EL_12 and the second electrodes EL_21 and EL_22 and how to determine the action.

[0040] like Figure 4 As shown, the smartwatch 100 includes at least one electrode (401_a or 401_b), a capacitance calculation circuit 403, and an action determination circuit 405. The electrode can be any one or more of the first electrodes EL_11, EL_12, and the second electrodes EL_21, EL_22. The capacitance calculation circuit 403 is used to calculate the capacitance change generated by the at least one electrode (401_a or 401_b). The action determination circuit 405 is used to determine an action based on the capacitance change. The action can be any user action, such as lying down, sitting, walking, running, or jogging.

[0041] Figure 4 The electrodes in can be mutual capacitance electrodes 401_a or self-capacitance electrodes 401_b. Mutual capacitance electrodes 401_a represent a single electrode that only acts as one of a transmitter (TX) and a receiver (RX). Self-capacitance electrodes 401_b represent a single electrode that acts as both a transmitter (TX) and a receiver (RX). Therefore, if the electrode is a mutual capacitance electrode 401_a, the capacitance calculation circuit 403 calculates the capacitance change between different electrodes. If the electrode is a self-capacitance electrode 401_b, the capacitance calculation circuit 403 calculates the capacitance change of a single electrode. The details of the mutual capacitance electrodes 401_a and the self-capacitance electrodes 401_b are well known to those skilled in the art and will not be repeated here.

[0042] In one embodiment, the smartwatch 100 further includes a processor 407 and a biometrics measuring device 409. The biometrics measuring device 409 can measure biometrics, such as, but not limited to, heart rate, blood pressure, and blood oxygen concentration. In this case, after the action determination circuit 405 determines an action, the processor 407 corrects the biometrics measured by the biometrics measuring device 409 based on the action. It should be understood that the processor 407 can be integrated into any other component of the smartwatch 100.

[0043] Many algorithms can be used to correct biometric information. For example, different actions may correspond to different frequency-domain noise waves or noise values, so biometric information can be corrected based on these noise waves or noise values. Another example is that certain actions may induce more noise in certain frequency bands. In this case, the biometric waves in the noisier frequency bands can be removed to correct the biometric information based on the action.

[0044] In one embodiment, different motion sensing areas are respectively more sensitive to different motions. In this case, the motion judgment circuit 405 judges different motions based on the capacitance changes of different motion sensing areas. For example, the motion judgment circuit 405 judges whether a first motion exists based on the capacitance changes of the first electrodes EL_11 and EL_12, and judges whether a second motion exists based on the capacitance changes of the second electrodes EL_21 and EL_22. In one embodiment, the first motion includes walking, and the second motion includes running or jogging, but is not limited thereto. Therefore, compared with traditional smart watches, Figure 2 The smart watch 100 shown has the advantage that “different motion sensing areas are highly sensitive to different motions”.

[0045] In this case, when the motion determination circuit 405 determines that the first motion exists, the processor 407 will correct the biometric information according to the first motion; when the motion determination circuit 405 determines that the second motion exists, the processor 407 will correct the biometric information according to the second motion.

[0046] The arrangement and / or number of the motion sensing area and the electrodes in the motion sensing area are not limited to Figure 2 Example shown. Figure 5 FIG. 1 is a schematic diagram of a smartwatch according to another embodiment of the present invention. Figure 5 As shown, the positions of the first motion sensing region MR_1 and the second motion sensing region MR_2 are Figure 2 Different. In addition, Figure 5 The first action sensing region MR_1 in the embodiment includes three first electrodes EL_11, EL_12 and EL_13, instead of Figure 2 The two first electrodes EL_11 and EL_12 are shown in FIG. Figure 5The second action sensing region MR_2 includes three second electrodes EL_21, EL_22 and EL_23, instead of Figure 2 In addition, the two second electrodes EL_21 and EL_22 are shown in FIG. Figure 5 The first electrodes EL_11, EL_12 and EL_13 and the second electrodes EL_21, EL_22 and EL_23 are circular, rather than Figure 2 Therefore, the arrangement and / or number of the motion sensing area and the electrodes in the motion sensing area can be changed according to different requirements. Such changes should also fall within the scope of the present invention.

[0047] As described above, the biometric measurement device 409 can measure biometric information such as heart rate, blood pressure, and blood oxygen concentration. The biometric measurement device 409 can have various structures. In one embodiment, the biometric measurement device 409 measures biometric information based on, for example, images or any other optical data having optical characteristics.

[0048] Figure 6 as well as Figure 7 FIG. 1 is a schematic diagram of a biological information measurement system according to an embodiment of the present invention. Figure 6 As shown, the biometrics measuring device in smartwatch 600 includes an optical sensor 601 and light sources L1 and L2. Light sources L1 and L2 are used to generate light. Optical sensor 601 is used to sense optical data generated by the light. The optical data is used to calculate biometrics. Figure 6 The smartwatch 600 shown also includes Figure 3 The first electrode EL_12 and the second electrode EL_22 are shown. That is, the smart watch 600 can be connected to Figure 2 and Figure 3 However, the smart watch 600 may include motion sensing areas with electrodes of different shapes.

[0049] Figure 7 yes Figure 6 Schematic diagram of the structure in the Y direction. Figure 7 As shown, the light sources L1 and L2 are arranged on the sensing surface 103 and surrounded by the first electrodes EL_11 and EL_12 and the second electrodes EL_21 and EL_22. However, the configuration and / or number of the optical sensors and light sources of the bio-information measuring device are not limited to Figure 6 and Figure 7 The embodiment shown.

[0050] Please also note that the smartwatch disclosed in the present invention is not limited to including a biometric information measuring device. If a smartwatch includes a biometric information measuring device, the smartwatch can be regarded as a biometric information measuring system.

[0051] According to the aforementioned embodiment, biometric information can be corrected according to motion, thereby enabling more accurate measurement of biometric information. In addition, motion can be accurately determined using different motion sensing areas.

[0052] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A wearable device capable of correcting biological information, characterized in that: include: matrix; A first motion sensing area includes a first electrode located on the substrate, wherein a first shielding layer is disposed between the substrate and the first electrode; A second motion sensing area includes a second electrode, wherein a second shielding layer is disposed on the second electrode, and the second electrode is located between the second shielding layer and the substrate; a capacitance calculation circuit coupled to the first electrode and configured to calculate a capacitance change generated by the first electrode or the second electrode; as well as an action determination circuit for determining an action of the wearable device based on the capacitance change of the first electrode or the capacitance change of the second electrode; The first motion sensing area and the second motion sensing area have higher sensitivities to different motions respectively; and no shielding layer is provided between the second electrode and the substrate.

2. The wearable device according to claim 1, wherein The wearable device further comprises: A biometric information measuring device for measuring the user's biometric information; The wearable device corrects the biological information according to the action.

3. The wearable device according to claim 2, wherein: The biological information measuring device comprises: a light source for generating light; and an optical sensor for sensing optical data generated according to the light; The optical data is used to calculate the biological information.

4. The wearable device according to claim 1, wherein: The action determination circuit determines whether a first action occurs according to the capacitance change of the first electrode, and determines whether a second action occurs according to the capacitance change of the second electrode.

5. The wearable device according to claim 4, wherein: The wearable device further comprises: A biometric information measuring device for measuring the user's biometric information; When the wearable device determines that the first action exists, the wearable device corrects the biometric information according to the first action; When the wearable device determines that the second action exists, the wearable device corrects the biological information according to the second action.

6. The wearable device according to claim 5, wherein: The biological information measuring device comprises: a light source for generating light; and an optical sensor for sensing optical data generated according to the light; The optical data is used to calculate the biological information.

7. The wearable device according to claim 1, wherein: The second shielding layer is coupled to a ground voltage level of the wearable device.

8. The wearable device according to claim 1, wherein: The second shielding layer is a metal layer.

9. The wearable device according to claim 1, wherein: The wearable device further includes a sensing surface. When the user wears the wearable device, the user can cause the capacitance change on the first electrode or the second electrode.

10. The wearable device according to claim 9, wherein: The wearable device includes a front surface and a rear surface, wherein the front surface displays required information and the rear surface serves as the sensing surface.

11. A biological information measurement system, characterized in that: include: Biometric information measuring device for measuring biometric information; matrix; A first motion sensing area includes a first electrode located on the substrate, wherein a first shielding layer is disposed between the substrate and the first electrode; A second motion sensing area includes a second electrode, wherein a second shielding layer is disposed on the second electrode, and the second electrode is located between the second shielding layer and the substrate; a capacitance calculation circuit coupled to the first electrode and the second electrode, for calculating a capacitance change generated by the first electrode or the second electrode; as well as an action determination circuit for determining an action of the bio-information measurement system according to the capacitance change of the first electrode or the capacitance change of the second electrode; wherein the biometric information measurement system corrects the biometric information in response to the action; The first motion sensing area and the second motion sensing area are respectively highly sensitive to different motions; and no shielding layer is provided between the second electrode and the substrate.

12. The biological information measurement system according to claim 11, wherein The biological information measuring device comprises: a light source for generating light; and an optical sensor for sensing optical data generated according to the light; The optical data is used to calculate the biological information.

13. The biological information measurement system according to claim 11, wherein The action determination circuit determines whether a first action occurs according to the capacitance change of the first electrode, and determines whether a second action occurs according to the capacitance change of the second electrode.

14. The biological information measurement system according to claim 13, wherein: When the biometric information measurement system determines that the first action exists, the biometric information measurement system corrects the biometric information according to the first action; When the biometric information measurement system determines that the second action exists, the biometric information measurement system corrects the biometric information according to the second action.

15. The biological information measurement system according to claim 11, wherein The second shielding layer is coupled to the ground voltage level of the biological information measurement system.

16. The biological information measurement system according to claim 11, wherein The second shielding layer is a metal layer.

Images